diff options
Diffstat (limited to 'drivers')
108 files changed, 9987 insertions, 359 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 69b4ddb7de3..3e4bc699bc0 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -357,6 +357,7 @@ static void dpm_power_up(pm_message_t state) { struct device *dev; + mutex_lock(&dpm_list_mtx); list_for_each_entry(dev, &dpm_list, power.entry) if (dev->power.status > DPM_OFF) { int error; @@ -366,6 +367,7 @@ static void dpm_power_up(pm_message_t state) if (error) pm_dev_err(dev, state, " early", error); } + mutex_unlock(&dpm_list_mtx); } /** @@ -614,6 +616,7 @@ int device_power_down(pm_message_t state) int error = 0; suspend_device_irqs(); + mutex_lock(&dpm_list_mtx); list_for_each_entry_reverse(dev, &dpm_list, power.entry) { error = suspend_device_noirq(dev, state); if (error) { @@ -622,6 +625,7 @@ int device_power_down(pm_message_t state) } dev->power.status = DPM_OFF_IRQ; } + mutex_unlock(&dpm_list_mtx); if (error) device_power_up(resume_event(state)); return error; diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 8f905089b72..a6cbf7b808e 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -934,8 +934,6 @@ static void blkfront_closing(struct xenbus_device *dev) spin_lock_irqsave(&blkif_io_lock, flags); - del_gendisk(info->gd); - /* No more blkif_request(). */ blk_stop_queue(info->rq); @@ -949,6 +947,8 @@ static void blkfront_closing(struct xenbus_device *dev) blk_cleanup_queue(info->rq); info->rq = NULL; + del_gendisk(info->gd); + out: xenbus_frontend_closed(dev); } @@ -977,8 +977,10 @@ static void backend_changed(struct xenbus_device *dev, break; case XenbusStateClosing: - if (info->gd == NULL) - xenbus_dev_fatal(dev, -ENODEV, "gd is NULL"); + if (info->gd == NULL) { + xenbus_frontend_closed(dev); + break; + } bd = bdget_disk(info->gd, 0); if (bd == NULL) xenbus_dev_fatal(dev, -ENODEV, "bdget failed"); diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c index 13929356135..9b1624e0dde 100644 --- a/drivers/cdrom/viocd.c +++ b/drivers/cdrom/viocd.c @@ -587,7 +587,7 @@ static int viocd_probe(struct vio_dev *vdev, const struct vio_device_id *id) struct device_node *node = vdev->dev.archdata.of_node; deviceno = vdev->unit_address; - if (deviceno > VIOCD_MAX_CD) + if (deviceno >= VIOCD_MAX_CD) return -ENODEV; if (!node) return -ENODEV; diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index aa83a0865ec..09050797c76 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -2856,6 +2856,7 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, /* Assume a single IPMB channel at zero. */ intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; intf->channels[0].protocol = IPMI_CHANNEL_PROTOCOL_IPMB; + intf->curr_channel = IPMI_MAX_CHANNELS; } if (rv == 0) @@ -3648,13 +3649,13 @@ static int handle_new_recv_msg(ipmi_smi_t intf, } /* - ** We need to make sure the channels have been initialized. - ** The channel_handler routine will set the "curr_channel" - ** equal to or greater than IPMI_MAX_CHANNELS when all the - ** channels for this interface have been initialized. - */ + * We need to make sure the channels have been initialized. + * The channel_handler routine will set the "curr_channel" + * equal to or greater than IPMI_MAX_CHANNELS when all the + * channels for this interface have been initialized. + */ if (intf->curr_channel < IPMI_MAX_CHANNELS) { - requeue = 1; /* Just put the message back for now */ + requeue = 0; /* Throw the message away */ goto out; } diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c index ed306eb1057..0c2f55a38b9 100644 --- a/drivers/char/tpm/tpm_bios.c +++ b/drivers/char/tpm/tpm_bios.c @@ -212,7 +212,8 @@ static int get_event_name(char *dest, struct tcpa_event *event, unsigned char * event_entry) { const char *name = ""; - char data[40] = ""; + /* 41 so there is room for 40 data and 1 nul */ + char data[41] = ""; int i, n_len = 0, d_len = 0; struct tcpa_pc_event *pc_event; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index d270e8eb3e6..47d2ad0ae07 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1070,11 +1070,11 @@ static int __cpufreq_remove_dev(struct sys_device *sys_dev) spin_unlock_irqrestore(&cpufreq_driver_lock, flags); #endif + unlock_policy_rwsem_write(cpu); + if (cpufreq_driver->target) __cpufreq_governor(data, CPUFREQ_GOV_STOP); - unlock_policy_rwsem_write(cpu); - kobject_put(&data->kobj); /* we need to make sure that the underlying kobj is actually diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index 2ecd95e4ab1..7a74d175287 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -91,6 +91,9 @@ static unsigned int dbs_enable; /* number of CPUs using this policy */ * (like __cpufreq_driver_target()) is being called with dbs_mutex taken, then * cpu_hotplug lock should be taken before that. Note that cpu_hotplug lock * is recursive for the same process. -Venki + * DEADLOCK ALERT! (2) : do_dbs_timer() must not take the dbs_mutex, because it + * would deadlock with cancel_delayed_work_sync(), which is needed for proper + * raceless workqueue teardown. */ static DEFINE_MUTEX(dbs_mutex); @@ -542,7 +545,7 @@ static inline void dbs_timer_init(struct cpu_dbs_info_s *dbs_info) static inline void dbs_timer_exit(struct cpu_dbs_info_s *dbs_info) { dbs_info->enable = 0; - cancel_delayed_work(&dbs_info->work); + cancel_delayed_work_sync(&dbs_info->work); } static int cpufreq_governor_dbs(struct cpufreq_policy *policy, diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 338f428a15b..e741c339df7 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -98,6 +98,9 @@ static unsigned int dbs_enable; /* number of CPUs using this policy */ * (like __cpufreq_driver_target()) is being called with dbs_mutex taken, then * cpu_hotplug lock should be taken before that. Note that cpu_hotplug lock * is recursive for the same process. -Venki + * DEADLOCK ALERT! (2) : do_dbs_timer() must not take the dbs_mutex, because it + * would deadlock with cancel_delayed_work_sync(), which is needed for proper + * raceless workqueue teardown. */ static DEFINE_MUTEX(dbs_mutex); @@ -562,7 +565,7 @@ static inline void dbs_timer_init(struct cpu_dbs_info_s *dbs_info) static inline void dbs_timer_exit(struct cpu_dbs_info_s *dbs_info) { dbs_info->enable = 0; - cancel_delayed_work(&dbs_info->work); + cancel_delayed_work_sync(&dbs_info->work); } static int cpufreq_governor_dbs(struct cpufreq_policy *policy, diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c index 6d80d17f1e9..0411d912d82 100644 --- a/drivers/gpu/drm/drm_bufs.c +++ b/drivers/gpu/drm/drm_bufs.c @@ -170,6 +170,14 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, } DRM_DEBUG("offset = 0x%08llx, size = 0x%08lx, type = %d\n", (unsigned long long)map->offset, map->size, map->type); + + /* page-align _DRM_SHM maps. They are allocated here so there is no security + * hole created by that and it works around various broken drivers that use + * a non-aligned quantity to map the SAREA. --BenH + */ + if (map->type == _DRM_SHM) + map->size = PAGE_ALIGN(map->size); + if ((map->offset & (~(resource_size_t)PAGE_MASK)) || (map->size & (~PAGE_MASK))) { drm_free(map, sizeof(*map), DRM_MEM_MAPS); return -EINVAL; diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index f01def16a66..019b7c57823 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -481,7 +481,7 @@ int drm_ioctl(struct inode *inode, struct file *filp, } retcode = func(dev, kdata, file_priv); - if ((retcode == 0) && (cmd & IOC_OUT)) { + if (cmd & IOC_OUT) { if (copy_to_user((void __user *)arg, kdata, _IOC_SIZE(cmd)) != 0) retcode = -EFAULT; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 9b149fe824c..c431fa54bbb 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -180,7 +180,8 @@ typedef struct drm_i915_private { int backlight_duty_cycle; /* restore backlight to this value */ bool panel_wants_dither; struct drm_display_mode *panel_fixed_mode; - struct drm_display_mode *vbt_mode; /* if any */ + struct drm_display_mode *lfp_lvds_vbt_mode; /* if any */ + struct drm_display_mode *sdvo_lvds_vbt_mode; /* if any */ /* Feature bits from the VBIOS */ unsigned int int_tv_support:1; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index b189b49c760..717b6a854bc 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -349,7 +349,7 @@ i915_gem_shmem_pread_slow(struct drm_device *dev, struct drm_gem_object *obj, last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; num_pages = last_data_page - first_data_page + 1; - user_pages = kcalloc(num_pages, sizeof(struct page *), GFP_KERNEL); + user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); if (user_pages == NULL) return -ENOMEM; @@ -429,7 +429,7 @@ fail_put_user_pages: SetPageDirty(user_pages[i]); page_cache_release(user_pages[i]); } - kfree(user_pages); + drm_free_large(user_pages); return ret; } @@ -649,7 +649,7 @@ i915_gem_gtt_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; num_pages = last_data_page - first_data_page + 1; - user_pages = kcalloc(num_pages, sizeof(struct page *), GFP_KERNEL); + user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); if (user_pages == NULL) return -ENOMEM; @@ -719,7 +719,7 @@ out_unlock: out_unpin_pages: for (i = 0; i < pinned_pages; i++) page_cache_release(user_pages[i]); - kfree(user_pages); + drm_free_large(user_pages); return ret; } @@ -824,7 +824,7 @@ i915_gem_shmem_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; num_pages = last_data_page - first_data_page + 1; - user_pages = kcalloc(num_pages, sizeof(struct page *), GFP_KERNEL); + user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); if (user_pages == NULL) return -ENOMEM; @@ -902,7 +902,7 @@ fail_unlock: fail_put_user_pages: for (i = 0; i < pinned_pages; i++) page_cache_release(user_pages[i]); - kfree(user_pages); + drm_free_large(user_pages); return ret; } @@ -1145,7 +1145,7 @@ int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) mutex_unlock(&dev->struct_mutex); return VM_FAULT_SIGBUS; } - list_add(&obj_priv->list, &dev_priv->mm.inactive_list); + list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); } /* Need a new fence register? */ @@ -1375,7 +1375,7 @@ i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, mutex_unlock(&dev->struct_mutex); return ret; } - list_add(&obj_priv->list, &dev_priv->mm.inactive_list); + list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); } drm_gem_object_unreference(obj); @@ -1408,9 +1408,7 @@ i915_gem_object_put_pages(struct drm_gem_object *obj) } obj_priv->dirty = 0; - drm_free(obj_priv->pages, - page_count * sizeof(struct page *), - DRM_MEM_DRIVER); + drm_free_large(obj_priv->pages); obj_priv->pages = NULL; } @@ -2024,8 +2022,7 @@ i915_gem_object_get_pages(struct drm_gem_object *obj) */ page_count = obj->size / PAGE_SIZE; BUG_ON(obj_priv->pages != NULL); - obj_priv->pages = drm_calloc(page_count, sizeof(struct page *), - DRM_MEM_DRIVER); + obj_priv->pages = drm_calloc_large(page_count, sizeof(struct page *)); if (obj_priv->pages == NULL) { DRM_ERROR("Faled to allocate page list\n"); obj_priv->pages_refcount--; @@ -3111,7 +3108,7 @@ i915_gem_get_relocs_from_user(struct drm_i915_gem_exec_object *exec_list, reloc_count += exec_list[i].relocation_count; } - *relocs = drm_calloc(reloc_count, sizeof(**relocs), DRM_MEM_DRIVER); + *relocs = drm_calloc_large(reloc_count, sizeof(**relocs)); if (*relocs == NULL) return -ENOMEM; @@ -3125,8 +3122,7 @@ i915_gem_get_relocs_from_user(struct drm_i915_gem_exec_object *exec_list, exec_list[i].relocation_count * sizeof(**relocs)); if (ret != 0) { - drm_free(*relocs, reloc_count * sizeof(**relocs), - DRM_MEM_DRIVER); + drm_free_large(*relocs); *relocs = NULL; return -EFAULT; } @@ -3165,7 +3161,7 @@ i915_gem_put_relocs_to_user(struct drm_i915_gem_exec_object *exec_list, } err: - drm_free(relocs, reloc_count * sizeof(*relocs), DRM_MEM_DRIVER); + drm_free_large(relocs); return ret; } @@ -3198,10 +3194,8 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, return -EINVAL; } /* Copy in the exec list from userland */ - exec_list = drm_calloc(sizeof(*exec_list), args->buffer_count, - DRM_MEM_DRIVER); - object_list = drm_calloc(sizeof(*object_list), args->buffer_count, - DRM_MEM_DRIVER); + exec_list = drm_calloc_large(sizeof(*exec_list), args->buffer_count); + object_list = drm_calloc_large(sizeof(*object_list), args->buffer_count); if (exec_list == NULL || object_list == NULL) { DRM_ERROR("Failed to allocate exec or object list " "for %d buffers\n", @@ -3462,10 +3456,8 @@ err: } pre_mutex_err: - drm_free(object_list, sizeof(*object_list) * args->buffer_count, - DRM_MEM_DRIVER); - drm_free(exec_list, sizeof(*exec_list) * args->buffer_count, - DRM_MEM_DRIVER); + drm_free_large(object_list); + drm_free_large(exec_list); drm_free(cliprects, sizeof(*cliprects) * args->num_cliprects, DRM_MEM_DRIVER); diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 15da44cf21b..9668cc0d7f4 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1410,9 +1410,25 @@ /* Cursor A & B regs */ #define CURACNTR 0x70080 +/* Old style CUR*CNTR flags (desktop 8xx) */ +#define CURSOR_ENABLE 0x80000000 +#define CURSOR_GAMMA_ENABLE 0x40000000 +#define CURSOR_STRIDE_MASK 0x30000000 +#define CURSOR_FORMAT_SHIFT 24 +#define CURSOR_FORMAT_MASK (0x07 << CURSOR_FORMAT_SHIFT) +#define CURSOR_FORMAT_2C (0x00 << CURSOR_FORMAT_SHIFT) +#define CURSOR_FORMAT_3C (0x01 << CURSOR_FORMAT_SHIFT) +#define CURSOR_FORMAT_4C (0x02 << CURSOR_FORMAT_SHIFT) +#define CURSOR_FORMAT_ARGB (0x04 << CURSOR_FORMAT_SHIFT) +#define CURSOR_FORMAT_XRGB (0x05 << CURSOR_FORMAT_SHIFT) +/* New style CUR*CNTR flags */ +#define CURSOR_MODE 0x27 #define CURSOR_MODE_DISABLE 0x00 #define CURSOR_MODE_64_32B_AX 0x07 #define CURSOR_MODE_64_ARGB_AX ((1 << 5) | CURSOR_MODE_64_32B_AX) +#define MCURSOR_PIPE_SELECT (1 << 28) +#define MCURSOR_PIPE_A 0x00 +#define MCURSOR_PIPE_B (1 << 28) #define MCURSOR_GAMMA_ENABLE (1 << 26) #define CURABASE 0x70084 #define CURAPOS 0x70088 @@ -1420,6 +1436,7 @@ #define CURSOR_POS_SIGN 0x8000 #define CURSOR_X_SHIFT 0 #define CURSOR_Y_SHIFT 16 +#define CURSIZE 0x700a0 #define CURBCNTR 0x700c0 #define CURBBASE 0x700c4 #define CURBPOS 0x700c8 diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index fc28e2bbd54..9d78cff33b2 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -57,9 +57,43 @@ find_section(struct bdb_header *bdb, int section_id) return NULL; } -/* Try to find panel data */ static void -parse_panel_data(struct drm_i915_private *dev_priv, struct bdb_header *bdb) +fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, + struct lvds_dvo_timing *dvo_timing) +{ + panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | + dvo_timing->hactive_lo; + panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay + + ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo); + panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start + + dvo_timing->hsync_pulse_width; + panel_fixed_mode->htotal = panel_fixed_mode->hdisplay + + ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo); + + panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) | + dvo_timing->vactive_lo; + panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay + + dvo_timing->vsync_off; + panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start + + dvo_timing->vsync_pulse_width; + panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay + + ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo); + panel_fixed_mode->clock = dvo_timing->clock * 10; + panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; + + /* Some VBTs have bogus h/vtotal values */ + if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) + panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; + if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) + panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; + + drm_mode_set_name(panel_fixed_mode); +} + +/* Try to find integrated panel data */ +static void +parse_lfp_panel_data(struct drm_i915_private *dev_priv, + struct bdb_header *bdb) { struct bdb_lvds_options *lvds_options; struct bdb_lvds_lfp_data *lvds_lfp_data; @@ -91,38 +125,45 @@ parse_panel_data(struct drm_i915_private *dev_priv, struct bdb_header *bdb) panel_fixed_mode = drm_calloc(1, sizeof(*panel_fixed_mode), DRM_MEM_DRIVER); - panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | - dvo_timing->hactive_lo; - panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay + - ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo); - panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start + - dvo_timing->hsync_pulse_width; - panel_fixed_mode->htotal = panel_fixed_mode->hdisplay + - ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo); + fill_detail_timing_data(panel_fixed_mode, dvo_timing); - panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) | - dvo_timing->vactive_lo; - panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay + - dvo_timing->vsync_off; - panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start + - dvo_timing->vsync_pulse_width; - panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay + - ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo); - panel_fixed_mode->clock = dvo_timing->clock * 10; - panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; + dev_priv->lfp_lvds_vbt_mode = panel_fixed_mode; - /* Some VBTs have bogus h/vtotal values */ - if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) - panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; - if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) - panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; + DRM_DEBUG("Found panel mode in BIOS VBT tables:\n"); + drm_mode_debug_printmodeline(panel_fixed_mode); - drm_mode_set_name(panel_fixed_mode); + return; +} + +/* Try to find sdvo panel data */ +static void +parse_sdvo_panel_data(struct drm_i915_private *dev_priv, + struct bdb_header *bdb) +{ + struct bdb_sdvo_lvds_options *sdvo_lvds_options; + struct lvds_dvo_timing *dvo_timing; + struct drm_display_mode *panel_fixed_mode; - dev_priv->vbt_mode = panel_fixed_mode; + dev_priv->sdvo_lvds_vbt_mode = NULL; - DRM_DEBUG("Found panel mode in BIOS VBT tables:\n"); - drm_mode_debug_printmodeline(panel_fixed_mode); + sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS); + if (!sdvo_lvds_options) + return; + + dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS); + if (!dvo_timing) + return; + + panel_fixed_mode = drm_calloc(1, sizeof(*panel_fixed_mode), + DRM_MEM_DRIVER); + + if (!panel_fixed_mode) + return; + + fill_detail_timing_data(panel_fixed_mode, + dvo_timing + sdvo_lvds_options->panel_type); + + dev_priv->sdvo_lvds_vbt_mode = panel_fixed_mode; return; } @@ -199,7 +240,8 @@ intel_init_bios(struct drm_device *dev) /* Grab useful general definitions */ parse_general_features(dev_priv, bdb); - parse_panel_data(dev_priv, bdb); + parse_lfp_panel_data(dev_priv, bdb); + parse_sdvo_panel_data(dev_priv, bdb); pci_unmap_rom(pdev, bios); diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h index de621aad85b..8ca2cde1580 100644 --- a/drivers/gpu/drm/i915/intel_bios.h +++ b/drivers/gpu/drm/i915/intel_bios.h @@ -279,6 +279,23 @@ struct vch_bdb_22 { struct vch_panel_data panels[16]; } __attribute__((packed)); +struct bdb_sdvo_lvds_options { + u8 panel_backlight; + u8 h40_set_panel_type; + u8 panel_type; + u8 ssc_clk_freq; + u16 als_low_trip; + u16 als_high_trip; + u8 sclalarcoeff_tab_row_num; + u8 sclalarcoeff_tab_row_size; + u8 coefficient[8]; + u8 panel_misc_bits_1; + u8 panel_misc_bits_2; + u8 panel_misc_bits_3; + u8 panel_misc_bits_4; +} __attribute__((packed)); + + bool intel_init_bios(struct drm_device *dev); /* diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c index 19148c3df63..640f5158eff 100644 --- a/drivers/gpu/drm/i915/intel_crt.c +++ b/drivers/gpu/drm/i915/intel_crt.c @@ -198,9 +198,142 @@ static bool intel_crt_detect_ddc(struct drm_connector *connector) return intel_ddc_probe(intel_output); } +static enum drm_connector_status +intel_crt_load_detect(struct drm_crtc *crtc, struct intel_output *intel_output) +{ + struct drm_encoder *encoder = &intel_output->enc; + struct drm_device *dev = encoder->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + uint32_t pipe = intel_crtc->pipe; + uint32_t save_bclrpat; + uint32_t save_vtotal; + uint32_t vtotal, vactive; + uint32_t vsample; + uint32_t vblank, vblank_start, vblank_end; + uint32_t dsl; + uint32_t bclrpat_reg; + uint32_t vtotal_reg; + uint32_t vblank_reg; + uint32_t vsync_reg; + uint32_t pipeconf_reg; + uint32_t pipe_dsl_reg; + uint8_t st00; + enum drm_connector_status status; + + if (pipe == 0) { + bclrpat_reg = BCLRPAT_A; + vtotal_reg = VTOTAL_A; + vblank_reg = VBLANK_A; + vsync_reg = VSYNC_A; + pipeconf_reg = PIPEACONF; + pipe_dsl_reg = PIPEADSL; + } else { + bclrpat_reg = BCLRPAT_B; + vtotal_reg = VTOTAL_B; + vblank_reg = VBLANK_B; + vsync_reg = VSYNC_B; + pipeconf_reg = PIPEBCONF; + pipe_dsl_reg = PIPEBDSL; + } + + save_bclrpat = I915_READ(bclrpat_reg); + save_vtotal = I915_READ(vtotal_reg); + vblank = I915_READ(vblank_reg); + + vtotal = ((save_vtotal >> 16) & 0xfff) + 1; + vactive = (save_vtotal & 0x7ff) + 1; + + vblank_start = (vblank & 0xfff) + 1; + vblank_end = ((vblank >> 16) & 0xfff) + 1; + + /* Set the border color to purple. */ + I915_WRITE(bclrpat_reg, 0x500050); + + if (IS_I9XX(dev)) { + uint32_t pipeconf = I915_READ(pipeconf_reg); + I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER); + /* Wait for next Vblank to substitue + * border color for Color info */ + intel_wait_for_vblank(dev); + st00 = I915_READ8(VGA_MSR_WRITE); + status = ((st00 & (1 << 4)) != 0) ? + connector_status_connected : + connector_status_disconnected; + + I915_WRITE(pipeconf_reg, pipeconf); + } else { + bool restore_vblank = false; + int count, detect; + + /* + * If there isn't any border, add some. + * Yes, this will flicker + */ + if (vblank_start <= vactive && vblank_end >= vtotal) { + uint32_t vsync = I915_READ(vsync_reg); + uint32_t vsync_start = (vsync & 0xffff) + 1; + + vblank_start = vsync_start; + I915_WRITE(vblank_reg, + (vblank_start - 1) | + ((vblank_end - 1) << 16)); + restore_vblank = true; + } + /* sample in the vertical border, selecting the larger one */ + if (vblank_start - vactive >= vtotal - vblank_end) + vsample = (vblank_start + vactive) >> 1; + else + vsample = (vtotal + vblank_end) >> 1; + + /* + * Wait for the border to be displayed + */ + while (I915_READ(pipe_dsl_reg) >= vactive) + ; + while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample) + ; + /* + * Watch ST00 for an entire scanline + */ + detect = 0; + count = 0; + do { + count++; + /* Read the ST00 VGA status register */ + st00 = I915_READ8(VGA_MSR_WRITE); + if (st00 & (1 << 4)) + detect++; + } while ((I915_READ(pipe_dsl_reg) == dsl)); + + /* restore vblank if necessary */ + if (restore_vblank) + I915_WRITE(vblank_reg, vblank); + /* + * If more than 3/4 of the scanline detected a monitor, + * then it is assumed to be present. This works even on i830, + * where there isn't any way to force the border color across + * the screen + */ + status = detect * 4 > count * 3 ? + connector_status_connected : + connector_status_disconnected; + } + + /* Restore previous settings */ + I915_WRITE(bclrpat_reg, save_bclrpat); + + return status; +} + static enum drm_connector_status intel_crt_detect(struct drm_connector *connector) { struct drm_device *dev = connector->dev; + struct intel_output *intel_output = to_intel_output(connector); + struct drm_encoder *encoder = &intel_output->enc; + struct drm_crtc *crtc; + int dpms_mode; + enum drm_connector_status status; if (IS_I9XX(dev) && !IS_I915G(dev) && !IS_I915GM(dev)) { if (intel_crt_detect_hotplug(connector)) @@ -212,8 +345,20 @@ static enum drm_connector_status intel_crt_detect(struct drm_connector *connecto if (intel_crt_detect_ddc(connector)) return connector_status_connected; - /* TODO use load detect */ - return connector_status_unknown; + /* for pre-945g platforms use load detect */ + if (encoder->crtc && encoder->crtc->enabled) { + status = intel_crt_load_detect(encoder->crtc, intel_output); + } else { + crtc = intel_get_load_detect_pipe(intel_output, + NULL, &dpms_mode); + if (crtc) { + status = intel_crt_load_detect(crtc, intel_output); + intel_release_load_detect_pipe(intel_output, dpms_mode); + } else + status = connector_status_unknown; + } + + return status; } static void intel_crt_destroy(struct drm_connector *connector) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 3387cf32f38..c9d6f10ba92 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1357,7 +1357,7 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc, int pipe = intel_crtc->pipe; uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR; uint32_t base = (pipe == 0) ? CURABASE : CURBBASE; - uint32_t temp; + uint32_t temp = I915_READ(control); size_t addr; int ret; @@ -1366,7 +1366,12 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc, /* if we want to turn off the cursor ignore width and height */ if (!handle) { DRM_DEBUG("cursor off\n"); - temp = CURSOR_MODE_DISABLE; + if (IS_MOBILE(dev) || IS_I9XX(dev)) { + temp &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE); + temp |= CURSOR_MODE_DISABLE; + } else { + temp &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE); + } addr = 0; bo = NULL; mutex_lock(&dev->struct_mutex); @@ -1409,10 +1414,19 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc, addr = obj_priv->phys_obj->handle->busaddr; } - temp = 0; - /* set the pipe for the cursor */ - temp |= (pipe << 28); - temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE; + if (!IS_I9XX(dev)) + I915_WRITE(CURSIZE, (height << 12) | width); + + /* Hooray for CUR*CNTR differences */ + if (IS_MOBILE(dev) || IS_I9XX(dev)) { + temp &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT); + temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE; + temp |= (pipe << 28); /* Connect to correct pipe */ + } else { + temp &= ~(CURSOR_FORMAT_MASK); + temp |= CURSOR_ENABLE; + temp |= CURSOR_FORMAT_ARGB | CURSOR_GAMMA_ENABLE; + } finish: I915_WRITE(control, temp); diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 439a8651499..53731f0ffcb 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -511,10 +511,10 @@ void intel_lvds_init(struct drm_device *dev) } /* Failed to get EDID, what about VBT? */ - if (dev_priv->vbt_mode) { + if (dev_priv->lfp_lvds_vbt_mode) { mutex_lock(&dev->mode_config.mutex); dev_priv->panel_fixed_mode = - drm_mode_duplicate(dev, dev_priv->vbt_mode); + drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); mutex_unlock(&dev->mode_config.mutex); if (dev_priv->panel_fixed_mode) { dev_priv->panel_fixed_mode->type |= diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 9913651c1e1..f3ef6bfd8ff 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -69,6 +69,10 @@ struct intel_sdvo_priv { * This is set if we treat the device as HDMI, instead of DVI. */ bool is_hdmi; + /** + * This is set if we detect output of sdvo device as LVDS. + */ + bool is_lvds; /** * Returned SDTV resolutions allowed for the current format, if the @@ -1398,10 +1402,8 @@ static enum drm_connector_status intel_sdvo_detect(struct drm_connector *connect static void intel_sdvo_get_ddc_modes(struct drm_connector *connector) { struct intel_output *intel_output = to_intel_output(connector); - struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv; /* set the bus switch and get the modes */ - intel_sdvo_set_control_bus_switch(intel_output, sdvo_priv->ddc_bus); intel_ddc_get_modes(intel_output); #if 0 @@ -1543,6 +1545,37 @@ static void intel_sdvo_get_tv_modes(struct drm_connector *connector) } } +static void intel_sdvo_get_lvds_modes(struct drm_connector *connector) +{ + struct intel_output *intel_output = to_intel_output(connector); + struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv; + struct drm_i915_private *dev_priv = connector->dev->dev_private; + + /* + * Attempt to get the mode list from DDC. + * Assume that the preferred modes are + * arranged in priority order. + */ + /* set the bus switch and get the modes */ + intel_sdvo_set_control_bus_switch(intel_output, sdvo_priv->ddc_bus); + intel_ddc_get_modes(intel_output); + if (list_empty(&connector->probed_modes) == false) + return; + + /* Fetch modes from VBT */ + if (dev_priv->sdvo_lvds_vbt_mode != NULL) { + struct drm_display_mode *newmode; + newmode = drm_mode_duplicate(connector->dev, + dev_priv->sdvo_lvds_vbt_mode); + if (newmode != NULL) { + /* Guarantee the mode is preferred */ + newmode->type = (DRM_MODE_TYPE_PREFERRED | + DRM_MODE_TYPE_DRIVER); + drm_mode_probed_add(connector, newmode); + } + } +} + static int intel_sdvo_get_modes(struct drm_connector *connector) { struct intel_output *output = to_intel_output(connector); @@ -1550,6 +1583,8 @@ static int intel_sdvo_get_modes(struct drm_connector *connector) if (sdvo_priv->is_tv) intel_sdvo_get_tv_modes(connector); + else if (sdvo_priv->is_lvds == true) + intel_sdvo_get_lvds_modes(connector); else intel_sdvo_get_ddc_modes(connector); @@ -1564,6 +1599,9 @@ static void intel_sdvo_destroy(struct drm_connector *connector) if (intel_output->i2c_bus) intel_i2c_destroy(intel_output->i2c_bus); + if (intel_output->ddc_bus) + intel_i2c_destroy(intel_output->ddc_bus); + drm_sysfs_connector_remove(connector); drm_connector_cleanup(connector); kfree(intel_output); @@ -1660,12 +1698,56 @@ intel_sdvo_get_digital_encoding_mode(struct intel_output *output) return true; } +static struct intel_output * +intel_sdvo_chan_to_intel_output(struct intel_i2c_chan *chan) +{ + struct drm_device *dev = chan->drm_dev; + struct drm_connector *connector; + struct intel_output *intel_output = NULL; + + list_for_each_entry(connector, + &dev->mode_config.connector_list, head) { + if (to_intel_output(connector)->ddc_bus == chan) { + intel_output = to_intel_output(connector); + break; + } + } + return intel_output; +} + +static int intel_sdvo_master_xfer(struct i2c_adapter *i2c_adap, + struct i2c_msg msgs[], int num) +{ + struct intel_output *intel_output; + struct intel_sdvo_priv *sdvo_priv; + struct i2c_algo_bit_data *algo_data; + struct i2c_algorithm *algo; + + algo_data = (struct i2c_algo_bit_data *)i2c_adap->algo_data; + intel_output = + intel_sdvo_chan_to_intel_output( + (struct intel_i2c_chan *)(algo_data->data)); + if (intel_output == NULL) + return -EINVAL; + + sdvo_priv = intel_output->dev_priv; + algo = (struct i2c_algorithm *)intel_output->i2c_bus->adapter.algo; + + intel_sdvo_set_control_bus_switch(intel_output, sdvo_priv->ddc_bus); + return algo->master_xfer(i2c_adap, msgs, num); +} + +static struct i2c_algorithm intel_sdvo_i2c_bit_algo = { + .master_xfer = intel_sdvo_master_xfer, +}; + bool intel_sdvo_init(struct drm_device *dev, int output_device) { struct drm_connector *connector; struct intel_output *intel_output; struct intel_sdvo_priv *sdvo_priv; struct intel_i2c_chan *i2cbus = NULL; + struct intel_i2c_chan *ddcbus = NULL; int connector_type; u8 ch[0x40]; int i; @@ -1676,17 +1758,9 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) return false; } - connector = &intel_output->base; - - drm_connector_init(dev, connector, &intel_sdvo_connector_funcs, - DRM_MODE_CONNECTOR_Unknown); - drm_connector_helper_add(connector, &intel_sdvo_connector_helper_funcs); sdvo_priv = (struct intel_sdvo_priv *)(intel_output + 1); intel_output->type = INTEL_OUTPUT_SDVO; - connector->interlace_allowed = 0; - connector->doublescan_allowed = 0; - /* setup the DDC bus. */ if (output_device == SDVOB) i2cbus = intel_i2c_create(dev, GPIOE, "SDVOCTRL_E for SDVOB"); @@ -1694,7 +1768,7 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) i2cbus = intel_i2c_create(dev, GPIOE, "SDVOCTRL_E for SDVOC"); if (!i2cbus) - goto err_connector; + goto err_inteloutput; sdvo_priv->i2c_bus = i2cbus; @@ -1710,7 +1784,6 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) intel_output->i2c_bus = i2cbus; intel_output->dev_priv = sdvo_priv; - /* Read the regs to test if we can talk to the device */ for (i = 0; i < 0x40; i++) { if (!intel_sdvo_read_byte(intel_output, i, &ch[i])) { @@ -1720,6 +1793,22 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) } } + /* setup the DDC bus. */ + if (output_device == SDVOB) + ddcbus = intel_i2c_create(dev, GPIOE, "SDVOB DDC BUS"); + else + ddcbus = intel_i2c_create(dev, GPIOE, "SDVOC DDC BUS"); + + if (ddcbus == NULL) + goto err_i2c; + + intel_sdvo_i2c_bit_algo.functionality = + intel_output->i2c_bus->adapter.algo->functionality; + ddcbus->adapter.algo = &intel_sdvo_i2c_bit_algo; + intel_output->ddc_bus = ddcbus; + + /* In defaut case sdvo lvds is false */ + sdvo_priv->is_lvds = false; intel_sdvo_get_capabilities(intel_output, &sdvo_priv->caps); if (sdvo_priv->caps.output_flags & @@ -1729,7 +1818,6 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) else sdvo_priv->controlled_output = SDVO_OUTPUT_TMDS1; - connector->display_info.subpixel_order = SubPixelHorizontalRGB; encoder_type = DRM_MODE_ENCODER_TMDS; connector_type = DRM_MODE_CONNECTOR_DVID; @@ -1747,7 +1835,6 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_SVID0) { sdvo_priv->controlled_output = SDVO_OUTPUT_SVID0; - connector->display_info.subpixel_order = SubPixelHorizontalRGB; encoder_type = DRM_MODE_ENCODER_TVDAC; connector_type = DRM_MODE_CONNECTOR_SVIDEO; sdvo_priv->is_tv = true; @@ -1756,30 +1843,28 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_RGB0) { sdvo_priv->controlled_output = SDVO_OUTPUT_RGB0; - connector->display_info.subpixel_order = SubPixelHorizontalRGB; encoder_type = DRM_MODE_ENCODER_DAC; connector_type = DRM_MODE_CONNECTOR_VGA; } else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_RGB1) { sdvo_priv->controlled_output = SDVO_OUTPUT_RGB1; - connector->display_info.subpixel_order = SubPixelHorizontalRGB; encoder_type = DRM_MODE_ENCODER_DAC; connector_type = DRM_MODE_CONNECTOR_VGA; } else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_LVDS0) { sdvo_priv->controlled_output = SDVO_OUTPUT_LVDS0; - connector->display_info.subpixel_order = SubPixelHorizontalRGB; encoder_type = DRM_MODE_ENCODER_LVDS; connector_type = DRM_MODE_CONNECTOR_LVDS; + sdvo_priv->is_lvds = true; } else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_LVDS1) { sdvo_priv->controlled_output = SDVO_OUTPUT_LVDS1; - connector->display_info.subpixel_order = SubPixelHorizontalRGB; encoder_type = DRM_MODE_ENCODER_LVDS; connector_type = DRM_MODE_CONNECTOR_LVDS; + sdvo_priv->is_lvds = true; } else { @@ -1795,9 +1880,16 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) goto err_i2c; } + connector = &intel_output->base; + drm_connector_init(dev, connector, &intel_sdvo_connector_funcs, + connector_type); + drm_connector_helper_add(connector, &intel_sdvo_connector_helper_funcs); + connector->interlace_allowed = 0; + connector->doublescan_allowed = 0; + connector->display_info.subpixel_order = SubPixelHorizontalRGB; + drm_encoder_init(dev, &intel_output->enc, &intel_sdvo_enc_funcs, encoder_type); drm_encoder_helper_add(&intel_output->enc, &intel_sdvo_helper_funcs); - connector->connector_type = connector_type; drm_mode_connector_attach_encoder(&intel_output->base, &intel_output->enc); drm_sysfs_connector_add(connector); @@ -1829,14 +1921,13 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) sdvo_priv->caps.output_flags & (SDVO_OUTPUT_TMDS1 | SDVO_OUTPUT_RGB1) ? 'Y' : 'N'); - intel_output->ddc_bus = i2cbus; - return true; err_i2c: + if (ddcbus != NULL) + intel_i2c_destroy(intel_output->ddc_bus); intel_i2c_destroy(intel_output->i2c_bus); -err_connector: - drm_connector_cleanup(connector); +err_inteloutput: kfree(intel_output); return false; diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 35dc38d3b2c..6415a2e2ba8 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -696,7 +696,7 @@ void ide_timer_expiry (unsigned long data) } spin_lock_irq(&hwif->lock); enable_irq(hwif->irq); - if (startstop == ide_stopped) { + if (startstop == ide_stopped && hwif->polling == 0) { ide_unlock_port(hwif); plug_device = 1; } @@ -868,7 +868,7 @@ irqreturn_t ide_intr (int irq, void *dev_id) * same irq as is currently being serviced here, and Linux * won't allow another of the same (on any CPU) until we return. */ - if (startstop == ide_stopped) { + if (startstop == ide_stopped && hwif->polling == 0) { BUG_ON(hwif->handler); ide_unlock_port(hwif); plug_device = 1; diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index c19a221b1e1..06fe002116e 100644 --- a/drivers/ide/ide-iops.c +++ b/drivers/ide/ide-iops.c @@ -206,8 +206,6 @@ EXPORT_SYMBOL_GPL(ide_in_drive_list); /* * Early UDMA66 devices don't set bit14 to 1, only bit13 is valid. - * We list them here and depend on the device side cable detection for them. - * * Some optical devices with the buggy firmwares have the same problem. */ static const struct drive_list_entry ivb_list[] = { @@ -251,10 +249,25 @@ u8 eighty_ninty_three(ide_drive_t *drive) * - force bit13 (80c cable present) check also for !ivb devices * (unless the slave device is pre-ATA3) */ - if ((id[ATA_ID_HW_CONFIG] & 0x4000) || - (ivb && (id[ATA_ID_HW_CONFIG] & 0x2000))) + if (id[ATA_ID_HW_CONFIG] & 0x4000) return 1; + if (ivb) { + const char *model = (char *)&id[ATA_ID_PROD]; + + if (strstr(model, "TSSTcorp CDDVDW SH-S202")) { + /* + * These ATAPI devices always report 80c cable + * so we have to depend on the host in this case. + */ + if (hwif->cbl == ATA_CBL_PATA80) + return 1; + } else { + /* Depend on the device side cable detection. */ + if (id[ATA_ID_HW_CONFIG] & 0x2000) + return 1; + } + } no_80w: if (drive->dev_flags & IDE_DFLAG_UDMA33_WARNED) return 0; diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c index 56ff8c46c7d..2148df836ce 100644 --- a/drivers/ide/ide-lib.c +++ b/drivers/ide/ide-lib.c @@ -31,24 +31,6 @@ void ide_toggle_bounce(ide_drive_t *drive, int on) blk_queue_bounce_limit(drive->queue, addr); } -static void ide_dump_opcode(ide_drive_t *drive) -{ - struct request *rq = drive->hwif->rq; - struct ide_cmd *cmd = NULL; - - if (!rq) - return; - - if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) - cmd = rq->special; - - printk(KERN_ERR "ide: failed opcode was: "); - if (cmd == NULL) - printk(KERN_CONT "unknown\n"); - else - printk(KERN_CONT "0x%02x\n", cmd->tf.command); -} - u64 ide_get_lba_addr(struct ide_cmd *cmd, int lba48) { struct ide_taskfile *tf = &cmd->tf; @@ -91,7 +73,7 @@ static void ide_dump_sector(ide_drive_t *drive) static void ide_dump_ata_error(ide_drive_t *drive, u8 err) { - printk(KERN_ERR "{ "); + printk(KERN_CONT "{ "); if (err & ATA_ABORTED) printk(KERN_CONT "DriveStatusError "); if (err & ATA_ICRC) @@ -121,7 +103,7 @@ static void ide_dump_ata_error(ide_drive_t *drive, u8 err) static void ide_dump_atapi_error(ide_drive_t *drive, u8 err) { - printk(KERN_ERR "{ "); + printk(KERN_CONT "{ "); if (err & ATAPI_ILI) printk(KERN_CONT "IllegalLengthIndication "); if (err & ATAPI_EOM) @@ -179,7 +161,10 @@ u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat) else ide_dump_atapi_error(drive, err); } - ide_dump_opcode(drive); + + printk(KERN_ERR "%s: possibly failed opcode: 0x%02x\n", + drive->name, drive->hwif->cmd.tf.command); + return err; } EXPORT_SYMBOL(ide_dump_status); diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 7f264ed1141..c895ed52b2e 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -295,7 +295,7 @@ int ide_dev_read_id(ide_drive_t *drive, u8 cmd, u16 *id) timeout = ((cmd == ATA_CMD_ID_ATA) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2; - if (ide_busy_sleep(hwif, timeout, use_altstatus)) + if (ide_busy_sleep(drive, timeout, use_altstatus)) return 1; /* wait for IRQ and ATA_DRQ */ @@ -316,8 +316,9 @@ int ide_dev_read_id(ide_drive_t *drive, u8 cmd, u16 *id) return rc; } -int ide_busy_sleep(ide_hwif_t *hwif, unsigned long timeout, int altstatus) +int ide_busy_sleep(ide_drive_t *drive, unsigned long timeout, int altstatus) { + ide_hwif_t *hwif = drive->hwif; u8 stat; timeout += jiffies; @@ -330,6 +331,8 @@ int ide_busy_sleep(ide_hwif_t *hwif, unsigned long timeout, int altstatus) return 0; } while (time_before(jiffies, timeout)); + printk(KERN_ERR "%s: timeout in %s\n", drive->name, __func__); + return 1; /* drive timed-out */ } @@ -420,7 +423,7 @@ static int do_probe (ide_drive_t *drive, u8 cmd) tp_ops->dev_select(drive); msleep(50); tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET); - (void)ide_busy_sleep(hwif, WAIT_WORSTCASE, 0); + (void)ide_busy_sleep(drive, WAIT_WORSTCASE, 0); rc = ide_dev_read_id(drive, cmd, id); } diff --git a/drivers/ide/via82cxxx.c b/drivers/ide/via82cxxx.c index 3ff7231e485..028de26a25f 100644 --- a/drivers/ide/via82cxxx.c +++ b/drivers/ide/via82cxxx.c @@ -67,6 +67,7 @@ static struct via_isa_bridge { u8 udma_mask; u8 flags; } via_isa_bridges[] = { + { "vx855", PCI_DEVICE_ID_VIA_VX855, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, { "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, @@ -474,6 +475,7 @@ static const struct pci_device_id via_pci_tbl[] = { { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C576_1), 0 }, { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C586_1), 0 }, { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_CX700_IDE), 0 }, + { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_VX855_IDE), 0 }, { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_6410), 1 }, { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_SATA_EIDE), 1 }, { 0, }, diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c index e29cdc13a19..a28c06d686e 100644 --- a/drivers/input/serio/ambakmi.c +++ b/drivers/input/serio/ambakmi.c @@ -107,7 +107,7 @@ static void amba_kmi_close(struct serio *io) clk_disable(kmi->clk); } -static int amba_kmi_probe(struct amba_device *dev, void *id) +static int amba_kmi_probe(struct amba_device *dev, struct amba_id *id) { struct amba_kmi_port *kmi; struct serio *io; diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c index b171e75cb52..29808c4fb1c 100644 --- a/drivers/isdn/gigaset/isocdata.c +++ b/drivers/isdn/gigaset/isocdata.c @@ -175,7 +175,7 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size) return -EINVAL; } src = iwb->read; - if (unlikely(limit > BAS_OUTBUFSIZE + BAS_OUTBUFPAD || + if (unlikely(limit >= BAS_OUTBUFSIZE + BAS_OUTBUFPAD || (read < src && limit >= src))) { pr_err("isoc write buffer frame reservation violated\n"); return -EFAULT; diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c index 1a83910f674..eaf722fe309 100644 --- a/drivers/lguest/x86/core.c +++ b/drivers/lguest/x86/core.c @@ -358,6 +358,16 @@ void lguest_arch_handle_trap(struct lg_cpu *cpu) if (emulate_insn(cpu)) return; } + /* If KVM is active, the vmcall instruction triggers a + * General Protection Fault. Normally it triggers an + * invalid opcode fault (6): */ + case 6: + /* We need to check if ring == GUEST_PL and + * faulting instruction == vmcall. */ + if (is_hypercall(cpu)) { + rewrite_hypercall(cpu); + return; + } break; case 14: /* We've intercepted a Page Fault. */ /* The Guest accessed a virtual address that wasn't mapped. @@ -403,15 +413,6 @@ void lguest_arch_handle_trap(struct lg_cpu *cpu) * up the pointer now to indicate a hypercall is pending. */ cpu->hcall = (struct hcall_args *)cpu->regs; return; - case 6: - /* kvm hypercalls trigger an invalid opcode fault (6). - * We need to check if ring == GUEST_PL and - * faulting instruction == vmcall. */ - if (is_hypercall(cpu)) { - rewrite_hypercall(cpu); - return; - } - break; } /* We didn't handle the trap, so it needs to go to the Guest. */ diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index 47c68bc75a1..56df1cee8fb 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -1097,14 +1097,12 @@ void bitmap_daemon_work(struct bitmap *bitmap) } bitmap->allclean = 1; + spin_lock_irqsave(&bitmap->lock, flags); for (j = 0; j < bitmap->chunks; j++) { bitmap_counter_t *bmc; - spin_lock_irqsave(&bitmap->lock, flags); - if (!bitmap->filemap) { + if (!bitmap->filemap) /* error or shutdown */ - spin_unlock_irqrestore(&bitmap->lock, flags); break; - } page = filemap_get_page(bitmap, j); @@ -1121,6 +1119,8 @@ void bitmap_daemon_work(struct bitmap *bitmap) write_page(bitmap, page, 0); bitmap->allclean = 0; } + spin_lock_irqsave(&bitmap->lock, flags); + j |= (PAGE_BITS - 1); continue; } @@ -1181,9 +1181,10 @@ void bitmap_daemon_work(struct bitmap *bitmap) ext2_clear_bit(file_page_offset(j), paddr); kunmap_atomic(paddr, KM_USER0); } - } - spin_unlock_irqrestore(&bitmap->lock, flags); + } else + j |= PAGE_COUNTER_MASK; } + spin_unlock_irqrestore(&bitmap->lock, flags); /* now sync the final page */ if (lastpage != NULL) { diff --git a/drivers/md/md.c b/drivers/md/md.c index fccc8343a25..641b211fe3f 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1375,6 +1375,9 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev) sb->raid_disks = cpu_to_le32(mddev->raid_disks); sb->size = cpu_to_le64(mddev->dev_sectors); + sb->chunksize = cpu_to_le32(mddev->chunk_size >> 9); + sb->level = cpu_to_le32(mddev->level); + sb->layout = cpu_to_le32(mddev->layout); if (mddev->bitmap && mddev->bitmap_file == NULL) { sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_offset); @@ -3303,7 +3306,9 @@ static ssize_t action_show(mddev_t *mddev, char *page) { char *type = "idle"; - if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) || + if (test_bit(MD_RECOVERY_FROZEN, &mddev->recovery)) + type = "frozen"; + else if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) || (!mddev->ro && test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))) { if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) type = "reshape"; @@ -3326,7 +3331,12 @@ action_store(mddev_t *mddev, const char *page, size_t len) if (!mddev->pers || !mddev->pers->sync_request) return -EINVAL; - if (cmd_match(page, "idle")) { + if (cmd_match(page, "frozen")) + set_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + else + clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + + if (cmd_match(page, "idle") || cmd_match(page, "frozen")) { if (mddev->sync_thread) { set_bit(MD_RECOVERY_INTR, &mddev->recovery); md_unregister_thread(mddev->sync_thread); @@ -3680,7 +3690,7 @@ array_size_store(mddev_t *mddev, const char *buf, size_t len) if (strict_blocks_to_sectors(buf, §ors) < 0) return -EINVAL; if (mddev->pers && mddev->pers->size(mddev, 0, 0) < sectors) - return -EINVAL; + return -E2BIG; mddev->external_size = 1; } @@ -5557,7 +5567,7 @@ static struct block_device_operations md_fops = .owner = THIS_MODULE, .open = md_open, .release = md_release, - .locked_ioctl = md_ioctl, + .ioctl = md_ioctl, .getgeo = md_getgeo, .media_changed = md_media_changed, .revalidate_disk= md_revalidate, @@ -6352,12 +6362,13 @@ void md_do_sync(mddev_t *mddev) skipped = 0; - if ((mddev->curr_resync > mddev->curr_resync_completed && - (mddev->curr_resync - mddev->curr_resync_completed) - > (max_sectors >> 4)) || - (j - mddev->curr_resync_completed)*2 - >= mddev->resync_max - mddev->curr_resync_completed - ) { + if (!test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) && + ((mddev->curr_resync > mddev->curr_resync_completed && + (mddev->curr_resync - mddev->curr_resync_completed) + > (max_sectors >> 4)) || + (j - mddev->curr_resync_completed)*2 + >= mddev->resync_max - mddev->curr_resync_completed + )) { /* time to update curr_resync_completed */ blk_unplug(mddev->queue); wait_event(mddev->recovery_wait, diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 4616bc3a6e7..3c3626d2a1f 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3811,13 +3811,13 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped safepos = conf->reshape_safe; sector_div(safepos, data_disks); if (mddev->delta_disks < 0) { - writepos -= reshape_sectors; + writepos -= min(reshape_sectors, writepos); readpos += reshape_sectors; safepos += reshape_sectors; } else { writepos += reshape_sectors; - readpos -= reshape_sectors; - safepos -= reshape_sectors; + readpos -= min(reshape_sectors, readpos); + safepos -= min(reshape_sectors, safepos); } /* 'writepos' is the most advanced device address we might write. diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c index 7793932a513..11a6248cc1c 100644 --- a/drivers/mfd/pcf50633-core.c +++ b/drivers/mfd/pcf50633-core.c @@ -443,7 +443,7 @@ static irqreturn_t pcf50633_irq(int irq, void *data) dev_dbg(pcf->dev, "pcf50633_irq\n"); get_device(pcf->dev); - disable_irq(pcf->irq); + disable_irq_nosync(pcf->irq); schedule_work(&pcf->irq_work); return IRQ_HANDLED; diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c index c2be3088e2e..fe24079387c 100644 --- a/drivers/mfd/wm8350-core.c +++ b/drivers/mfd/wm8350-core.c @@ -79,10 +79,6 @@ static int wm8350_phys_read(struct wm8350 *wm8350, u8 reg, int num_regs, /* Cache is CPU endian */ dest[i - reg] = be16_to_cpu(dest[i - reg]); - /* Satisfy non-volatile bits from cache */ - dest[i - reg] &= wm8350_reg_io_map[i].vol; - dest[i - reg] |= wm8350->reg_cache[i]; - /* Mask out non-readable bits */ dest[i - reg] &= wm8350_reg_io_map[i].readable; } @@ -182,9 +178,6 @@ static int wm8350_write(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *src) (wm8350->reg_cache[i] & ~wm8350_reg_io_map[i].writable) | src[i - reg]; - /* Don't store volatile bits */ - wm8350->reg_cache[i] &= ~wm8350_reg_io_map[i].vol; - src[i - reg] = cpu_to_be16(src[i - reg]); } @@ -1261,7 +1254,6 @@ static int wm8350_create_cache(struct wm8350 *wm8350, int type, int mode) (i < WM8350_CLOCK_CONTROL_1 || i > WM8350_AIF_TEST)) { value = be16_to_cpu(wm8350->reg_cache[i]); value &= wm8350_reg_io_map[i].readable; - value &= ~wm8350_reg_io_map[i].vol; wm8350->reg_cache[i] = value; } else wm8350->reg_cache[i] = reg_map[i]; diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c index 3cf61ece71d..348443bdb23 100644 --- a/drivers/misc/enclosure.c +++ b/drivers/misc/enclosure.c @@ -119,7 +119,7 @@ enclosure_register(struct device *dev, const char *name, int components, edev->edev.class = &enclosure_class; edev->edev.parent = get_device(dev); edev->cb = cb; - dev_set_name(&edev->edev, name); + dev_set_name(&edev->edev, "%s", name); err = device_register(&edev->edev); if (err) goto err; @@ -255,8 +255,8 @@ enclosure_component_register(struct enclosure_device *edev, ecomp->number = number; cdev = &ecomp->cdev; cdev->parent = get_device(&edev->edev); - if (name) - dev_set_name(cdev, name); + if (name && name[0]) + dev_set_name(cdev, "%s", name); else dev_set_name(cdev, "%u", number); diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 36875dcfa49..7d4febdab28 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -490,7 +490,7 @@ static void mmci_check_status(unsigned long data) mod_timer(&host->timer, jiffies + HZ); } -static int __devinit mmci_probe(struct amba_device *dev, void *id) +static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id) { struct mmc_platform_data *plat = dev->dev.platform_data; struct mmci_host *host; diff --git a/drivers/net/Makefile b/drivers/net/Makefile index 1fc4602a6ff..a1c25cb4669 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -102,7 +102,7 @@ obj-$(CONFIG_HAMACHI) += hamachi.o obj-$(CONFIG_NET) += Space.o loopback.o obj-$(CONFIG_SEEQ8005) += seeq8005.o obj-$(CONFIG_NET_SB1000) += sb1000.o -obj-$(CONFIG_MAC8390) += mac8390.o 8390.o +obj-$(CONFIG_MAC8390) += mac8390.o obj-$(CONFIG_APNE) += apne.o 8390.o obj-$(CONFIG_PCMCIA_PCNET) += 8390.o obj-$(CONFIG_HP100) += hp100.o diff --git a/drivers/net/benet/be.h b/drivers/net/benet/be.h index c49ddd08b2a..b4bb06fdf30 100644 --- a/drivers/net/benet/be.h +++ b/drivers/net/benet/be.h @@ -35,8 +35,22 @@ #define DRV_VER "2.0.348" #define DRV_NAME "be2net" #define BE_NAME "ServerEngines BladeEngine2 10Gbps NIC" +#define OC_NAME "Emulex OneConnect 10Gbps NIC" #define DRV_DESC BE_NAME "Driver" +#define BE_VENDOR_ID 0x19a2 +#define BE_DEVICE_ID1 0x211 +#define OC_DEVICE_ID1 0x700 +#define OC_DEVICE_ID2 0x701 + +static inline char *nic_name(struct pci_dev *pdev) +{ + if (pdev->device == OC_DEVICE_ID1 || pdev->device == OC_DEVICE_ID2) + return OC_NAME; + else + return BE_NAME; +} + /* Number of bytes of an RX frame that are copied to skb->data */ #define BE_HDR_LEN 64 #define BE_MAX_JUMBO_FRAME_SIZE 9018 diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index 30d0c81c989..5c378b5e8e4 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -28,10 +28,10 @@ static unsigned int rx_frag_size = 2048; module_param(rx_frag_size, uint, S_IRUGO); MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data."); -#define BE_VENDOR_ID 0x19a2 -#define BE2_DEVICE_ID_1 0x0211 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = { - { PCI_DEVICE(BE_VENDOR_ID, BE2_DEVICE_ID_1) }, + { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) }, + { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) }, + { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) }, { 0 } }; MODULE_DEVICE_TABLE(pci, be_dev_ids); @@ -1859,7 +1859,7 @@ static int __devinit be_probe(struct pci_dev *pdev, if (status != 0) goto stats_clean; - dev_info(&pdev->dev, BE_NAME " port %d\n", adapter->port_num); + dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num); return 0; stats_clean: @@ -1873,7 +1873,7 @@ rel_reg: disable_dev: pci_disable_device(pdev); do_none: - dev_warn(&pdev->dev, BE_NAME " initialization failed\n"); + dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev)); return status; } diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c index 8c2e5ab51f0..faf094abef7 100644 --- a/drivers/net/bonding/bond_3ad.c +++ b/drivers/net/bonding/bond_3ad.c @@ -1465,6 +1465,12 @@ static struct aggregator *ad_agg_selection_test(struct aggregator *best, return best; } +static int agg_device_up(const struct aggregator *agg) +{ + return (netif_running(agg->slave->dev) && + netif_carrier_ok(agg->slave->dev)); +} + /** * ad_agg_selection_logic - select an aggregation group for a team * @aggregator: the aggregator we're looking at @@ -1496,14 +1502,13 @@ static void ad_agg_selection_logic(struct aggregator *agg) struct port *port; origin = agg; - active = __get_active_agg(agg); - best = active; + best = (active && agg_device_up(active)) ? active : NULL; do { agg->is_active = 0; - if (agg->num_of_ports) + if (agg->num_of_ports && agg_device_up(agg)) best = ad_agg_selection_test(best, agg); } while ((agg = __get_next_agg(agg))); diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index b2c49679bba..a0519184e54 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -1885,8 +1885,17 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit) if (unlikely(!newskb)) newskb = skb; - else if (skb) + else if (skb) { + /* + * We need to reset ->data to what it + * was before gfar_new_skb() re-aligned + * it to an RXBUF_ALIGNMENT boundary + * before we put the skb back on the + * recycle list. + */ + skb->data = skb->head + NET_SKB_PAD; __skb_queue_head(&priv->rx_recycle, skb); + } } else { /* Increment the number of packets */ dev->stats.rx_packets++; diff --git a/drivers/net/mac8390.c b/drivers/net/mac8390.c index 8e884869a05..f26667d5eaa 100644 --- a/drivers/net/mac8390.c +++ b/drivers/net/mac8390.c @@ -304,7 +304,7 @@ struct net_device * __init mac8390_probe(int unit) if (!MACH_IS_MAC) return ERR_PTR(-ENODEV); - dev = alloc_ei_netdev(); + dev = ____alloc_ei_netdev(0); if (!dev) return ERR_PTR(-ENOMEM); @@ -481,10 +481,10 @@ void cleanup_module(void) static const struct net_device_ops mac8390_netdev_ops = { .ndo_open = mac8390_open, .ndo_stop = mac8390_close, - .ndo_start_xmit = ei_start_xmit, - .ndo_tx_timeout = ei_tx_timeout, - .ndo_get_stats = ei_get_stats, - .ndo_set_multicast_list = ei_set_multicast_list, + .ndo_start_xmit = __ei_start_xmit, + .ndo_tx_timeout = __ei_tx_timeout, + .ndo_get_stats = __ei_get_stats, + .ndo_set_multicast_list = __ei_set_multicast_list, .ndo_validate_addr = eth_validate_addr, .ndo_set_mac_address = eth_mac_addr, .ndo_change_mtu = eth_change_mtu, diff --git a/drivers/net/meth.c b/drivers/net/meth.c index aa08987f6e8..dbd3436912b 100644 --- a/drivers/net/meth.c +++ b/drivers/net/meth.c @@ -127,11 +127,11 @@ static unsigned long mdio_read(struct meth_private *priv, unsigned long phyreg) static int mdio_probe(struct meth_private *priv) { int i; - unsigned long p2, p3; + unsigned long p2, p3, flags; /* check if phy is detected already */ if(priv->phy_addr>=0&&priv->phy_addr<32) return 0; - spin_lock(&priv->meth_lock); + spin_lock_irqsave(&priv->meth_lock, flags); for (i=0;i<32;++i){ priv->phy_addr=i; p2=mdio_read(priv,2); @@ -157,7 +157,7 @@ static int mdio_probe(struct meth_private *priv) break; } } - spin_unlock(&priv->meth_lock); + spin_unlock_irqrestore(&priv->meth_lock, flags); if(priv->phy_addr<32) { return 0; } @@ -373,14 +373,14 @@ static int meth_release(struct net_device *dev) static void meth_rx(struct net_device* dev, unsigned long int_status) { struct sk_buff *skb; - unsigned long status; + unsigned long status, flags; struct meth_private *priv = netdev_priv(dev); unsigned long fifo_rptr = (int_status & METH_INT_RX_RPTR_MASK) >> 8; - spin_lock(&priv->meth_lock); + spin_lock_irqsave(&priv->meth_lock, flags); priv->dma_ctrl &= ~METH_DMA_RX_INT_EN; mace->eth.dma_ctrl = priv->dma_ctrl; - spin_unlock(&priv->meth_lock); + spin_unlock_irqrestore(&priv->meth_lock, flags); if (int_status & METH_INT_RX_UNDERFLOW) { fifo_rptr = (fifo_rptr - 1) & 0x0f; @@ -452,12 +452,12 @@ static void meth_rx(struct net_device* dev, unsigned long int_status) mace->eth.rx_fifo = priv->rx_ring_dmas[priv->rx_write]; ADVANCE_RX_PTR(priv->rx_write); } - spin_lock(&priv->meth_lock); + spin_lock_irqsave(&priv->meth_lock, flags); /* In case there was underflow, and Rx DMA was disabled */ priv->dma_ctrl |= METH_DMA_RX_INT_EN | METH_DMA_RX_EN; mace->eth.dma_ctrl = priv->dma_ctrl; mace->eth.int_stat = METH_INT_RX_THRESHOLD; - spin_unlock(&priv->meth_lock); + spin_unlock_irqrestore(&priv->meth_lock, flags); } static int meth_tx_full(struct net_device *dev) @@ -470,11 +470,11 @@ static int meth_tx_full(struct net_device *dev) static void meth_tx_cleanup(struct net_device* dev, unsigned long int_status) { struct meth_private *priv = netdev_priv(dev); - unsigned long status; + unsigned long status, flags; struct sk_buff *skb; unsigned long rptr = (int_status&TX_INFO_RPTR) >> 16; - spin_lock(&priv->meth_lock); + spin_lock_irqsave(&priv->meth_lock, flags); /* Stop DMA notification */ priv->dma_ctrl &= ~(METH_DMA_TX_INT_EN); @@ -527,12 +527,13 @@ static void meth_tx_cleanup(struct net_device* dev, unsigned long int_status) } mace->eth.int_stat = METH_INT_TX_EMPTY | METH_INT_TX_PKT; - spin_unlock(&priv->meth_lock); + spin_unlock_irqrestore(&priv->meth_lock, flags); } static void meth_error(struct net_device* dev, unsigned status) { struct meth_private *priv = netdev_priv(dev); + unsigned long flags; printk(KERN_WARNING "meth: error status: 0x%08x\n",status); /* check for errors too... */ @@ -547,7 +548,7 @@ static void meth_error(struct net_device* dev, unsigned status) printk(KERN_WARNING "meth: Rx overflow\n"); if (status & (METH_INT_RX_UNDERFLOW)) { printk(KERN_WARNING "meth: Rx underflow\n"); - spin_lock(&priv->meth_lock); + spin_lock_irqsave(&priv->meth_lock, flags); mace->eth.int_stat = METH_INT_RX_UNDERFLOW; /* more underflow interrupts will be delivered, * effectively throwing us into an infinite loop. @@ -555,7 +556,7 @@ static void meth_error(struct net_device* dev, unsigned status) priv->dma_ctrl &= ~METH_DMA_RX_EN; mace->eth.dma_ctrl = priv->dma_ctrl; DPRINTK("Disabled meth Rx DMA temporarily\n"); - spin_unlock(&priv->meth_lock); + spin_unlock_irqrestore(&priv->meth_lock, flags); } mace->eth.int_stat = METH_INT_ERROR; } diff --git a/drivers/net/mlx4/en_cq.c b/drivers/net/mlx4/en_cq.c index 91f50de84be..a276125b709 100644 --- a/drivers/net/mlx4/en_cq.c +++ b/drivers/net/mlx4/en_cq.c @@ -125,8 +125,10 @@ void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) if (cq->is_tx) del_timer(&cq->timer); - else + else { napi_disable(&cq->napi); + netif_napi_del(&cq->napi); + } mlx4_cq_free(mdev->dev, &cq->mcq); } diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c index a400d7115f7..6bb5af35eda 100644 --- a/drivers/net/mv643xx_eth.c +++ b/drivers/net/mv643xx_eth.c @@ -569,7 +569,7 @@ static int rxq_process(struct rx_queue *rxq, int budget) if (rxq->rx_curr_desc == rxq->rx_ring_size) rxq->rx_curr_desc = 0; - dma_unmap_single(NULL, rx_desc->buf_ptr, + dma_unmap_single(mp->dev->dev.parent, rx_desc->buf_ptr, rx_desc->buf_size, DMA_FROM_DEVICE); rxq->rx_desc_count--; rx++; @@ -678,8 +678,9 @@ static int rxq_refill(struct rx_queue *rxq, int budget) rx_desc = rxq->rx_desc_area + rx; - rx_desc->buf_ptr = dma_map_single(NULL, skb->data, - mp->skb_size, DMA_FROM_DEVICE); + rx_desc->buf_ptr = dma_map_single(mp->dev->dev.parent, + skb->data, mp->skb_size, + DMA_FROM_DEVICE); rx_desc->buf_size = mp->skb_size; rxq->rx_skb[rx] = skb; wmb(); @@ -718,6 +719,7 @@ static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb) { + struct mv643xx_eth_private *mp = txq_to_mp(txq); int nr_frags = skb_shinfo(skb)->nr_frags; int frag; @@ -746,10 +748,10 @@ static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb) desc->l4i_chk = 0; desc->byte_cnt = this_frag->size; - desc->buf_ptr = dma_map_page(NULL, this_frag->page, - this_frag->page_offset, - this_frag->size, - DMA_TO_DEVICE); + desc->buf_ptr = dma_map_page(mp->dev->dev.parent, + this_frag->page, + this_frag->page_offset, + this_frag->size, DMA_TO_DEVICE); } } @@ -826,7 +828,8 @@ no_csum: desc->l4i_chk = l4i_chk; desc->byte_cnt = length; - desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE); + desc->buf_ptr = dma_map_single(mp->dev->dev.parent, skb->data, + length, DMA_TO_DEVICE); __skb_queue_tail(&txq->tx_skb, skb); @@ -956,10 +959,10 @@ static int txq_reclaim(struct tx_queue *txq, int budget, int force) } if (cmd_sts & TX_FIRST_DESC) { - dma_unmap_single(NULL, desc->buf_ptr, + dma_unmap_single(mp->dev->dev.parent, desc->buf_ptr, desc->byte_cnt, DMA_TO_DEVICE); } else { - dma_unmap_page(NULL, desc->buf_ptr, + dma_unmap_page(mp->dev->dev.parent, desc->buf_ptr, desc->byte_cnt, DMA_TO_DEVICE); } @@ -1894,9 +1897,9 @@ static int rxq_init(struct mv643xx_eth_private *mp, int index) mp->rx_desc_sram_size); rxq->rx_desc_dma = mp->rx_desc_sram_addr; } else { - rxq->rx_desc_area = dma_alloc_coherent(NULL, size, - &rxq->rx_desc_dma, - GFP_KERNEL); + rxq->rx_desc_area = dma_alloc_coherent(mp->dev->dev.parent, + size, &rxq->rx_desc_dma, + GFP_KERNEL); } if (rxq->rx_desc_area == NULL) { @@ -1947,7 +1950,7 @@ out_free: if (index == 0 && size <= mp->rx_desc_sram_size) iounmap(rxq->rx_desc_area); else - dma_free_coherent(NULL, size, + dma_free_coherent(mp->dev->dev.parent, size, rxq->rx_desc_area, rxq->rx_desc_dma); @@ -1979,7 +1982,7 @@ static void rxq_deinit(struct rx_queue *rxq) rxq->rx_desc_area_size <= mp->rx_desc_sram_size) iounmap(rxq->rx_desc_area); else - dma_free_coherent(NULL, rxq->rx_desc_area_size, + dma_free_coherent(mp->dev->dev.parent, rxq->rx_desc_area_size, rxq->rx_desc_area, rxq->rx_desc_dma); kfree(rxq->rx_skb); @@ -2007,9 +2010,9 @@ static int txq_init(struct mv643xx_eth_private *mp, int index) mp->tx_desc_sram_size); txq->tx_desc_dma = mp->tx_desc_sram_addr; } else { - txq->tx_desc_area = dma_alloc_coherent(NULL, size, - &txq->tx_desc_dma, - GFP_KERNEL); + txq->tx_desc_area = dma_alloc_coherent(mp->dev->dev.parent, + size, &txq->tx_desc_dma, + GFP_KERNEL); } if (txq->tx_desc_area == NULL) { @@ -2053,7 +2056,7 @@ static void txq_deinit(struct tx_queue *txq) txq->tx_desc_area_size <= mp->tx_desc_sram_size) iounmap(txq->tx_desc_area); else - dma_free_coherent(NULL, txq->tx_desc_area_size, + dma_free_coherent(mp->dev->dev.parent, txq->tx_desc_area_size, txq->tx_desc_area, txq->tx_desc_dma); } diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c index 0b6e8c89683..8247a945a1d 100644 --- a/drivers/net/r8169.c +++ b/drivers/net/r8169.c @@ -3554,54 +3554,64 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance) int handled = 0; int status; + /* loop handling interrupts until we have no new ones or + * we hit a invalid/hotplug case. + */ status = RTL_R16(IntrStatus); + while (status && status != 0xffff) { + handled = 1; - /* hotplug/major error/no more work/shared irq */ - if ((status == 0xffff) || !status) - goto out; - - handled = 1; + /* Handle all of the error cases first. These will reset + * the chip, so just exit the loop. + */ + if (unlikely(!netif_running(dev))) { + rtl8169_asic_down(ioaddr); + break; + } - if (unlikely(!netif_running(dev))) { - rtl8169_asic_down(ioaddr); - goto out; - } + /* Work around for rx fifo overflow */ + if (unlikely(status & RxFIFOOver) && + (tp->mac_version == RTL_GIGA_MAC_VER_11)) { + netif_stop_queue(dev); + rtl8169_tx_timeout(dev); + break; + } - status &= tp->intr_mask; - RTL_W16(IntrStatus, - (status & RxFIFOOver) ? (status | RxOverflow) : status); + if (unlikely(status & SYSErr)) { + rtl8169_pcierr_interrupt(dev); + break; + } - if (!(status & tp->intr_event)) - goto out; + if (status & LinkChg) + rtl8169_check_link_status(dev, tp, ioaddr); - /* Work around for rx fifo overflow */ - if (unlikely(status & RxFIFOOver) && - (tp->mac_version == RTL_GIGA_MAC_VER_11)) { - netif_stop_queue(dev); - rtl8169_tx_timeout(dev); - goto out; - } + /* We need to see the lastest version of tp->intr_mask to + * avoid ignoring an MSI interrupt and having to wait for + * another event which may never come. + */ + smp_rmb(); + if (status & tp->intr_mask & tp->napi_event) { + RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event); + tp->intr_mask = ~tp->napi_event; + + if (likely(napi_schedule_prep(&tp->napi))) + __napi_schedule(&tp->napi); + else if (netif_msg_intr(tp)) { + printk(KERN_INFO "%s: interrupt %04x in poll\n", + dev->name, status); + } + } - if (unlikely(status & SYSErr)) { - rtl8169_pcierr_interrupt(dev); - goto out; + /* We only get a new MSI interrupt when all active irq + * sources on the chip have been acknowledged. So, ack + * everything we've seen and check if new sources have become + * active to avoid blocking all interrupts from the chip. + */ + RTL_W16(IntrStatus, + (status & RxFIFOOver) ? (status | RxOverflow) : status); + status = RTL_R16(IntrStatus); } - if (status & LinkChg) - rtl8169_check_link_status(dev, tp, ioaddr); - - if (status & tp->napi_event) { - RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event); - tp->intr_mask = ~tp->napi_event; - - if (likely(napi_schedule_prep(&tp->napi))) - __napi_schedule(&tp->napi); - else if (netif_msg_intr(tp)) { - printk(KERN_INFO "%s: interrupt %04x in poll\n", - dev->name, status); - } - } -out: return IRQ_RETVAL(handled); } @@ -3617,13 +3627,15 @@ static int rtl8169_poll(struct napi_struct *napi, int budget) if (work_done < budget) { napi_complete(napi); - tp->intr_mask = 0xffff; - /* - * 20040426: the barrier is not strictly required but the - * behavior of the irq handler could be less predictable - * without it. Btw, the lack of flush for the posted pci - * write is safe - FR + + /* We need for force the visibility of tp->intr_mask + * for other CPUs, as we can loose an MSI interrupt + * and potentially wait for a retransmit timeout if we don't. + * The posted write to IntrMask is safe, as it will + * eventually make it to the chip and we won't loose anything + * until it does. */ + tp->intr_mask = 0xffff; smp_wmb(); RTL_W16(IntrMask, tp->intr_event); } diff --git a/drivers/net/vxge/vxge-traffic.c b/drivers/net/vxge/vxge-traffic.c index 7be0ae10d69..c2eeac4125f 100644 --- a/drivers/net/vxge/vxge-traffic.c +++ b/drivers/net/vxge/vxge-traffic.c @@ -115,7 +115,7 @@ enum vxge_hw_status vxge_hw_vpath_intr_enable(struct __vxge_hw_vpath_handle *vp) VXGE_HW_KDFCCTL_ERRORS_REG_KDFCCTL_FIFO1_POISON| VXGE_HW_KDFCCTL_ERRORS_REG_KDFCCTL_FIFO2_POISON| VXGE_HW_KDFCCTL_ERRORS_REG_KDFCCTL_FIFO1_DMA_ERR| - VXGE_HW_KDFCCTL_ERRORS_REG_KDFCCTL_FIFO1_DMA_ERR), 0, 32), + VXGE_HW_KDFCCTL_ERRORS_REG_KDFCCTL_FIFO2_DMA_ERR), 0, 32), &vp_reg->kdfcctl_errors_mask); __vxge_hw_pio_mem_write32_upper(0, &vp_reg->vpath_ppif_int_mask); diff --git a/drivers/net/wimax/i2400m/rx.c b/drivers/net/wimax/i2400m/rx.c index 02419bfd64b..f9fc3890232 100644 --- a/drivers/net/wimax/i2400m/rx.c +++ b/drivers/net/wimax/i2400m/rx.c @@ -819,10 +819,9 @@ void i2400m_roq_queue_update_ws(struct i2400m *i2400m, struct i2400m_roq *roq, roq_data = (struct i2400m_roq_data *) &skb->cb; i2400m_net_erx(i2400m, skb, roq_data->cs); } - else { + else __i2400m_roq_queue(i2400m, roq, skb, sn, nsn); - __i2400m_roq_update_ws(i2400m, roq, sn + 1); - } + __i2400m_roq_update_ws(i2400m, roq, sn + 1); i2400m_roq_log_add(i2400m, roq, I2400M_RO_TYPE_PACKET_WS, old_ws, len, sn, nsn, roq->ws); } diff --git a/drivers/net/wimax/i2400m/usb.c b/drivers/net/wimax/i2400m/usb.c index ca4151a9e22..17851321b7f 100644 --- a/drivers/net/wimax/i2400m/usb.c +++ b/drivers/net/wimax/i2400m/usb.c @@ -505,27 +505,52 @@ int i2400mu_suspend(struct usb_interface *iface, pm_message_t pm_msg) #ifdef CONFIG_PM struct usb_device *usb_dev = i2400mu->usb_dev; #endif + unsigned is_autosuspend = 0; struct i2400m *i2400m = &i2400mu->i2400m; +#ifdef CONFIG_PM + if (usb_dev->auto_pm > 0) + is_autosuspend = 1; +#endif + d_fnstart(3, dev, "(iface %p pm_msg %u)\n", iface, pm_msg.event); if (i2400m->updown == 0) goto no_firmware; - d_printf(1, dev, "fw up, requesting standby\n"); + if (i2400m->state == I2400M_SS_DATA_PATH_CONNECTED && is_autosuspend) { + /* ugh -- the device is connected and this suspend + * request is an autosuspend one (not a system standby + * / hibernate). + * + * The only way the device can go to standby is if the + * link with the base station is in IDLE mode; that + * were the case, we'd be in status + * I2400M_SS_CONNECTED_IDLE. But we are not. + * + * If we *tell* him to go power save now, it'll reset + * as a precautionary measure, so if this is an + * autosuspend thing, say no and it'll come back + * later, when the link is IDLE + */ + result = -EBADF; + d_printf(1, dev, "fw up, link up, not-idle, autosuspend: " + "not entering powersave\n"); + goto error_not_now; + } + d_printf(1, dev, "fw up: entering powersave\n"); atomic_dec(&i2400mu->do_autopm); result = i2400m_cmd_enter_powersave(i2400m); atomic_inc(&i2400mu->do_autopm); -#ifdef CONFIG_PM - if (result < 0 && usb_dev->auto_pm == 0) { + if (result < 0 && !is_autosuspend) { /* System suspend, can't fail */ dev_err(dev, "failed to suspend, will reset on resume\n"); result = 0; } -#endif if (result < 0) goto error_enter_powersave; i2400mu_notification_release(i2400mu); - d_printf(1, dev, "fw up, got standby\n"); + d_printf(1, dev, "powersave requested\n"); error_enter_powersave: +error_not_now: no_firmware: d_fnend(3, dev, "(iface %p pm_msg %u) = %d\n", iface, pm_msg.event, result); diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c index d7347573912..9eabf4d1f2e 100644 --- a/drivers/net/wireless/airo.c +++ b/drivers/net/wireless/airo.c @@ -6467,6 +6467,7 @@ static int airo_get_encode(struct net_device *dev, { struct airo_info *local = dev->ml_priv; int index = (dwrq->flags & IW_ENCODE_INDEX) - 1; + int wep_key_len; u8 buf[16]; if (!local->wep_capable) @@ -6500,11 +6501,13 @@ static int airo_get_encode(struct net_device *dev, dwrq->flags |= index + 1; /* Copy the key to the user buffer */ - dwrq->length = get_wep_key(local, index, &buf[0], sizeof(buf)); - if (dwrq->length != -1) - memcpy(extra, buf, dwrq->length); - else + wep_key_len = get_wep_key(local, index, &buf[0], sizeof(buf)); + if (wep_key_len < 0) { dwrq->length = 0; + } else { + dwrq->length = wep_key_len; + memcpy(extra, buf, dwrq->length); + } return 0; } @@ -6617,7 +6620,7 @@ static int airo_get_encodeext(struct net_device *dev, struct airo_info *local = dev->ml_priv; struct iw_point *encoding = &wrqu->encoding; struct iw_encode_ext *ext = (struct iw_encode_ext *)extra; - int idx, max_key_len; + int idx, max_key_len, wep_key_len; u8 buf[16]; if (!local->wep_capable) @@ -6661,11 +6664,13 @@ static int airo_get_encodeext(struct net_device *dev, memset(extra, 0, 16); /* Copy the key to the user buffer */ - ext->key_len = get_wep_key(local, idx, &buf[0], sizeof(buf)); - if (ext->key_len != -1) - memcpy(extra, buf, ext->key_len); - else + wep_key_len = get_wep_key(local, idx, &buf[0], sizeof(buf)); + if (wep_key_len < 0) { ext->key_len = 0; + } else { + ext->key_len = wep_key_len; + memcpy(extra, buf, ext->key_len); + } return 0; } diff --git a/drivers/net/wireless/ath5k/phy.c b/drivers/net/wireless/ath5k/phy.c index 9e2faae5ae9..b48b29dca3d 100644 --- a/drivers/net/wireless/ath5k/phy.c +++ b/drivers/net/wireless/ath5k/phy.c @@ -1487,28 +1487,35 @@ ath5k_get_linear_pcdac_min(const u8 *stepL, const u8 *stepR, { s8 tmp; s16 min_pwrL, min_pwrR; - s16 pwr_i = pwrL[0]; - - do { - pwr_i--; - tmp = (s8) ath5k_get_interpolated_value(pwr_i, - pwrL[0], pwrL[1], - stepL[0], stepL[1]); - - } while (tmp > 1); - - min_pwrL = pwr_i; - - pwr_i = pwrR[0]; - do { - pwr_i--; - tmp = (s8) ath5k_get_interpolated_value(pwr_i, - pwrR[0], pwrR[1], - stepR[0], stepR[1]); - - } while (tmp > 1); + s16 pwr_i; + + if (pwrL[0] == pwrL[1]) + min_pwrL = pwrL[0]; + else { + pwr_i = pwrL[0]; + do { + pwr_i--; + tmp = (s8) ath5k_get_interpolated_value(pwr_i, + pwrL[0], pwrL[1], + stepL[0], stepL[1]); + } while (tmp > 1); + + min_pwrL = pwr_i; + } - min_pwrR = pwr_i; + if (pwrR[0] == pwrR[1]) + min_pwrR = pwrR[0]; + else { + pwr_i = pwrR[0]; + do { + pwr_i--; + tmp = (s8) ath5k_get_interpolated_value(pwr_i, + pwrR[0], pwrR[1], + stepR[0], stepR[1]); + } while (tmp > 1); + + min_pwrR = pwr_i; + } /* Keep the right boundary so that it works for both curves */ return max(min_pwrL, min_pwrR); diff --git a/drivers/net/wireless/ath5k/reset.c b/drivers/net/wireless/ath5k/reset.c index 7a17d31b2fd..5f72c111c2e 100644 --- a/drivers/net/wireless/ath5k/reset.c +++ b/drivers/net/wireless/ath5k/reset.c @@ -26,7 +26,7 @@ \*****************************/ #include <linux/pci.h> /* To determine if a card is pci-e */ -#include <linux/bitops.h> /* For get_bitmask_order */ +#include <linux/log2.h> #include "ath5k.h" #include "reg.h" #include "base.h" @@ -69,10 +69,10 @@ static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah, /* Get exponent * ALGO: coef_exp = 14 - highest set bit position */ - coef_exp = get_bitmask_order(coef_scaled); + coef_exp = ilog2(coef_scaled); /* Doesn't make sense if it's zero*/ - if (!coef_exp) + if (!coef_scaled || !coef_exp) return -EINVAL; /* Note: we've shifted coef_scaled by 24 */ @@ -359,7 +359,7 @@ int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial) mode |= AR5K_PHY_MODE_FREQ_5GHZ; if (ah->ah_radio == AR5K_RF5413) - clock |= AR5K_PHY_PLL_40MHZ_5413; + clock = AR5K_PHY_PLL_40MHZ_5413; else clock |= AR5K_PHY_PLL_40MHZ; diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c index e5ca2511a81..9452461ce86 100644 --- a/drivers/net/wireless/iwlwifi/iwl-5000.c +++ b/drivers/net/wireless/iwlwifi/iwl-5000.c @@ -46,7 +46,7 @@ #include "iwl-6000-hw.h" /* Highest firmware API version supported */ -#define IWL5000_UCODE_API_MAX 1 +#define IWL5000_UCODE_API_MAX 2 #define IWL5150_UCODE_API_MAX 2 /* Lowest firmware API version supported */ diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 3bb28db4a40..f46ba247577 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -669,13 +669,6 @@ static int iwl_set_mode(struct iwl_priv *priv, int mode) if (!iwl_is_ready_rf(priv)) return -EAGAIN; - cancel_delayed_work(&priv->scan_check); - if (iwl_scan_cancel_timeout(priv, 100)) { - IWL_WARN(priv, "Aborted scan still in progress after 100ms\n"); - IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n"); - return -EAGAIN; - } - iwl_commit_rxon(priv); return 0; diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c index e7c65c4f741..6330b91e37c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-scan.c +++ b/drivers/net/wireless/iwlwifi/iwl-scan.c @@ -227,9 +227,6 @@ static void iwl_rx_scan_complete_notif(struct iwl_priv *priv, /* The HW is no longer scanning */ clear_bit(STATUS_SCAN_HW, &priv->status); - /* The scan completion notification came in, so kill that timer... */ - cancel_delayed_work(&priv->scan_check); - IWL_DEBUG_INFO(priv, "Scan pass on %sGHz took %dms\n", (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ? "2.4" : "5.2", @@ -712,6 +709,8 @@ static void iwl_bg_request_scan(struct work_struct *data) mutex_lock(&priv->mutex); + cancel_delayed_work(&priv->scan_check); + if (!iwl_is_ready(priv)) { IWL_WARN(priv, "request scan called when driver not ready.\n"); goto done; @@ -925,6 +924,8 @@ void iwl_bg_scan_completed(struct work_struct *work) IWL_DEBUG_SCAN(priv, "SCAN complete scan\n"); + cancel_delayed_work(&priv->scan_check); + ieee80211_scan_completed(priv->hw, false); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index 4cce6613350..ff4d0e41d7c 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -782,13 +782,6 @@ static int iwl3945_set_mode(struct iwl_priv *priv, int mode) if (!iwl_is_ready_rf(priv)) return -EAGAIN; - cancel_delayed_work(&priv->scan_check); - if (iwl_scan_cancel_timeout(priv, 100)) { - IWL_WARN(priv, "Aborted scan still in progress after 100ms\n"); - IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n"); - return -EAGAIN; - } - iwl3945_commit_rxon(priv); return 0; @@ -3298,6 +3291,8 @@ static void iwl3945_bg_request_scan(struct work_struct *data) mutex_lock(&priv->mutex); + cancel_delayed_work(&priv->scan_check); + if (!iwl_is_ready(priv)) { IWL_WARN(priv, "request scan called when driver not ready.\n"); goto done; diff --git a/drivers/net/wireless/rt2x00/rt2x00debug.c b/drivers/net/wireless/rt2x00/rt2x00debug.c index 07d378ef0b4..7b3ee8c2eae 100644 --- a/drivers/net/wireless/rt2x00/rt2x00debug.c +++ b/drivers/net/wireless/rt2x00/rt2x00debug.c @@ -138,7 +138,7 @@ void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev, if (cipher == CIPHER_TKIP_NO_MIC) cipher = CIPHER_TKIP; - if (cipher == CIPHER_NONE || cipher > CIPHER_MAX) + if (cipher == CIPHER_NONE || cipher >= CIPHER_MAX) return; /* Remove CIPHER_NONE index */ diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c index f0e99d4c066..242257b1944 100644 --- a/drivers/oprofile/cpu_buffer.c +++ b/drivers/oprofile/cpu_buffer.c @@ -78,16 +78,20 @@ void free_cpu_buffers(void) op_ring_buffer_write = NULL; } +#define RB_EVENT_HDR_SIZE 4 + int alloc_cpu_buffers(void) { int i; unsigned long buffer_size = oprofile_cpu_buffer_size; + unsigned long byte_size = buffer_size * (sizeof(struct op_sample) + + RB_EVENT_HDR_SIZE); - op_ring_buffer_read = ring_buffer_alloc(buffer_size, OP_BUFFER_FLAGS); + op_ring_buffer_read = ring_buffer_alloc(byte_size, OP_BUFFER_FLAGS); if (!op_ring_buffer_read) goto fail; - op_ring_buffer_write = ring_buffer_alloc(buffer_size, OP_BUFFER_FLAGS); + op_ring_buffer_write = ring_buffer_alloc(byte_size, OP_BUFFER_FLAGS); if (!op_ring_buffer_write) goto fail; diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 34bf0fdf504..1a91bf9687a 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -557,7 +557,8 @@ static int pci_platform_power_transition(struct pci_dev *dev, pci_power_t state) } else { error = -ENODEV; /* Fall back to PCI_D0 if native PM is not supported */ - pci_update_current_state(dev, PCI_D0); + if (!dev->pm_cap) + dev->current_state = PCI_D0; } return error; diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c index 82615355215..aaf1f75fa29 100644 --- a/drivers/rtc/rtc-pl030.c +++ b/drivers/rtc/rtc-pl030.c @@ -102,7 +102,7 @@ static const struct rtc_class_ops pl030_ops = { .set_alarm = pl030_set_alarm, }; -static int pl030_probe(struct amba_device *dev, void *id) +static int pl030_probe(struct amba_device *dev, struct amba_id *id) { struct pl030_rtc *rtc; int ret; diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index 333eec689d2..451fc13784d 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -127,7 +127,7 @@ static int pl031_remove(struct amba_device *adev) return 0; } -static int pl031_probe(struct amba_device *adev, void *id) +static int pl031_probe(struct amba_device *adev, struct amba_id *id) { int ret; struct pl031_local *ldata; diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c index 8b7983aba8f..36c21b19e5d 100644 --- a/drivers/scsi/3w-9xxx.c +++ b/drivers/scsi/3w-9xxx.c @@ -1978,7 +1978,8 @@ static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id) { struct scsi_cmnd *cmd = tw_dev->srb[request_id]; - scsi_dma_unmap(cmd); + if (cmd->SCp.phase == TW_PHASE_SGLIST) + scsi_dma_unmap(cmd); } /* End twa_unmap_scsi_data() */ /* scsi_host_template initializer */ diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c index c03f1d2c9e2..faa0fcfed71 100644 --- a/drivers/scsi/3w-xxxx.c +++ b/drivers/scsi/3w-xxxx.c @@ -6,7 +6,7 @@ Arnaldo Carvalho de Melo <acme@conectiva.com.br> Brad Strand <linux@3ware.com> - Copyright (C) 1999-2007 3ware Inc. + Copyright (C) 1999-2009 3ware Inc. Kernel compatiblity By: Andre Hedrick <andre@suse.com> Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com> @@ -1294,7 +1294,8 @@ static void tw_unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) { dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n"); - scsi_dma_unmap(cmd); + if (cmd->SCp.phase == TW_PHASE_SGLIST) + scsi_dma_unmap(cmd); } /* End tw_unmap_scsi_data() */ /* This function will reset a device extension */ diff --git a/drivers/scsi/3w-xxxx.h b/drivers/scsi/3w-xxxx.h index 8e71e5e122b..a5a2ba2561d 100644 --- a/drivers/scsi/3w-xxxx.h +++ b/drivers/scsi/3w-xxxx.h @@ -6,7 +6,7 @@ Arnaldo Carvalho de Melo <acme@conectiva.com.br> Brad Strand <linux@3ware.com> - Copyright (C) 1999-2007 3ware Inc. + Copyright (C) 1999-2009 3ware Inc. Kernel compatiblity By: Andre Hedrick <andre@suse.com> Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com> diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 8ed2990c826..fb2740789b6 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -628,6 +628,17 @@ config FCOE ---help--- Fibre Channel over Ethernet module +config FCOE_FNIC + tristate "Cisco FNIC Driver" + depends on PCI && X86 + select LIBFC + help + This is support for the Cisco PCI-Express FCoE HBA. + + To compile this driver as a module, choose M here and read + <file:Documentation/scsi/scsi.txt>. + The module will be called fnic. + config SCSI_DMX3191D tristate "DMX3191D SCSI support" depends on PCI && SCSI diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index e7c861ac417..a5049cfb40e 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile @@ -39,6 +39,7 @@ obj-$(CONFIG_SCSI_DH) += device_handler/ obj-$(CONFIG_LIBFC) += libfc/ obj-$(CONFIG_LIBFCOE) += fcoe/ obj-$(CONFIG_FCOE) += fcoe/ +obj-$(CONFIG_FCOE_FNIC) += fnic/ obj-$(CONFIG_ISCSI_TCP) += libiscsi.o libiscsi_tcp.o iscsi_tcp.o obj-$(CONFIG_INFINIBAND_ISER) += libiscsi.o obj-$(CONFIG_SCSI_A4000T) += 53c700.o a4000t.o diff --git a/drivers/scsi/fnic/Makefile b/drivers/scsi/fnic/Makefile new file mode 100644 index 00000000000..37c3440bc17 --- /dev/null +++ b/drivers/scsi/fnic/Makefile @@ -0,0 +1,15 @@ +obj-$(CONFIG_FCOE_FNIC) += fnic.o + +fnic-y := \ + fnic_attrs.o \ + fnic_isr.o \ + fnic_main.o \ + fnic_res.o \ + fnic_fcs.o \ + fnic_scsi.o \ + vnic_cq.o \ + vnic_dev.o \ + vnic_intr.o \ + vnic_rq.o \ + vnic_wq_copy.o \ + vnic_wq.o diff --git a/drivers/scsi/fnic/cq_desc.h b/drivers/scsi/fnic/cq_desc.h new file mode 100644 index 00000000000..d1225cf6320 --- /dev/null +++ b/drivers/scsi/fnic/cq_desc.h @@ -0,0 +1,78 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _CQ_DESC_H_ +#define _CQ_DESC_H_ + +/* + * Completion queue descriptor types + */ +enum cq_desc_types { + CQ_DESC_TYPE_WQ_ENET = 0, + CQ_DESC_TYPE_DESC_COPY = 1, + CQ_DESC_TYPE_WQ_EXCH = 2, + CQ_DESC_TYPE_RQ_ENET = 3, + CQ_DESC_TYPE_RQ_FCP = 4, +}; + +/* Completion queue descriptor: 16B + * + * All completion queues have this basic layout. The + * type_specfic area is unique for each completion + * queue type. + */ +struct cq_desc { + __le16 completed_index; + __le16 q_number; + u8 type_specfic[11]; + u8 type_color; +}; + +#define CQ_DESC_TYPE_BITS 4 +#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1) +#define CQ_DESC_COLOR_MASK 1 +#define CQ_DESC_COLOR_SHIFT 7 +#define CQ_DESC_Q_NUM_BITS 10 +#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1) +#define CQ_DESC_COMP_NDX_BITS 12 +#define CQ_DESC_COMP_NDX_MASK ((1 << CQ_DESC_COMP_NDX_BITS) - 1) + +static inline void cq_desc_dec(const struct cq_desc *desc_arg, + u8 *type, u8 *color, u16 *q_number, u16 *completed_index) +{ + const struct cq_desc *desc = desc_arg; + const u8 type_color = desc->type_color; + + *color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK; + + /* + * Make sure color bit is read from desc *before* other fields + * are read from desc. Hardware guarantees color bit is last + * bit (byte) written. Adding the rmb() prevents the compiler + * and/or CPU from reordering the reads which would potentially + * result in reading stale values. + */ + + rmb(); + + *type = type_color & CQ_DESC_TYPE_MASK; + *q_number = le16_to_cpu(desc->q_number) & CQ_DESC_Q_NUM_MASK; + *completed_index = le16_to_cpu(desc->completed_index) & + CQ_DESC_COMP_NDX_MASK; +} + +#endif /* _CQ_DESC_H_ */ diff --git a/drivers/scsi/fnic/cq_enet_desc.h b/drivers/scsi/fnic/cq_enet_desc.h new file mode 100644 index 00000000000..a9fa26f82dd --- /dev/null +++ b/drivers/scsi/fnic/cq_enet_desc.h @@ -0,0 +1,167 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _CQ_ENET_DESC_H_ +#define _CQ_ENET_DESC_H_ + +#include "cq_desc.h" + +/* Ethernet completion queue descriptor: 16B */ +struct cq_enet_wq_desc { + __le16 completed_index; + __le16 q_number; + u8 reserved[11]; + u8 type_color; +}; + +static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc, + u8 *type, u8 *color, u16 *q_number, u16 *completed_index) +{ + cq_desc_dec((struct cq_desc *)desc, type, + color, q_number, completed_index); +} + +/* Completion queue descriptor: Ethernet receive queue, 16B */ +struct cq_enet_rq_desc { + __le16 completed_index_flags; + __le16 q_number_rss_type_flags; + __le32 rss_hash; + __le16 bytes_written_flags; + __le16 vlan; + __le16 checksum_fcoe; + u8 flags; + u8 type_color; +}; + +#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT (0x1 << 12) +#define CQ_ENET_RQ_DESC_FLAGS_FCOE (0x1 << 13) +#define CQ_ENET_RQ_DESC_FLAGS_EOP (0x1 << 14) +#define CQ_ENET_RQ_DESC_FLAGS_SOP (0x1 << 15) + +#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS 4 +#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \ + ((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1) +#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE 0 +#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4 1 +#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4 2 +#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6 3 +#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6 4 +#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX 5 +#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX 6 + +#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC (0x1 << 14) + +#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS 14 +#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \ + ((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1) +#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED (0x1 << 14) +#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED (0x1 << 15) + +#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS 4 +#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \ + ((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1) +#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8 +#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \ + ((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1) +#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8 + +#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0) +#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0) +#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1) +#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1) +#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2) +#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3) +#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4) +#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5) +#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6) +#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7) + +static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc, + u8 *type, u8 *color, u16 *q_number, u16 *completed_index, + u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type, + u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error, + u8 *vlan_stripped, u16 *vlan, u16 *checksum, u8 *fcoe_sof, + u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof, + u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok, + u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok) +{ + u16 completed_index_flags = le16_to_cpu(desc->completed_index_flags); + u16 q_number_rss_type_flags = + le16_to_cpu(desc->q_number_rss_type_flags); + u16 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags); + + cq_desc_dec((struct cq_desc *)desc, type, + color, q_number, completed_index); + + *ingress_port = (completed_index_flags & + CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0; + *fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ? + 1 : 0; + *eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ? + 1 : 0; + *sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ? + 1 : 0; + + *rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) & + CQ_ENET_RQ_DESC_RSS_TYPE_MASK); + *csum_not_calc = (q_number_rss_type_flags & + CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0; + + *rss_hash = le32_to_cpu(desc->rss_hash); + + *bytes_written = bytes_written_flags & + CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK; + *packet_error = (bytes_written_flags & + CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0; + *vlan_stripped = (bytes_written_flags & + CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0; + + *vlan = le16_to_cpu(desc->vlan); + + if (*fcoe) { + *fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) & + CQ_ENET_RQ_DESC_FCOE_SOF_MASK); + *fcoe_fc_crc_ok = (desc->flags & + CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0; + *fcoe_enc_error = (desc->flags & + CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0; + *fcoe_eof = (u8)((desc->checksum_fcoe >> + CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) & + CQ_ENET_RQ_DESC_FCOE_EOF_MASK); + *checksum = 0; + } else { + *fcoe_sof = 0; + *fcoe_fc_crc_ok = 0; + *fcoe_enc_error = 0; + *fcoe_eof = 0; + *checksum = le16_to_cpu(desc->checksum_fcoe); + } + + *tcp_udp_csum_ok = + (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0; + *udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0; + *tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0; + *ipv4_csum_ok = + (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0; + *ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0; + *ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0; + *ipv4_fragment = + (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0; + *fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0; +} + +#endif /* _CQ_ENET_DESC_H_ */ diff --git a/drivers/scsi/fnic/cq_exch_desc.h b/drivers/scsi/fnic/cq_exch_desc.h new file mode 100644 index 00000000000..501660cfe22 --- /dev/null +++ b/drivers/scsi/fnic/cq_exch_desc.h @@ -0,0 +1,182 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _CQ_EXCH_DESC_H_ +#define _CQ_EXCH_DESC_H_ + +#include "cq_desc.h" + +/* Exchange completion queue descriptor: 16B */ +struct cq_exch_wq_desc { + u16 completed_index; + u16 q_number; + u16 exchange_id; + u8 tmpl; + u8 reserved0; + u32 reserved1; + u8 exch_status; + u8 reserved2[2]; + u8 type_color; +}; + +#define CQ_EXCH_WQ_STATUS_BITS 2 +#define CQ_EXCH_WQ_STATUS_MASK ((1 << CQ_EXCH_WQ_STATUS_BITS) - 1) + +enum cq_exch_status_types { + CQ_EXCH_WQ_STATUS_TYPE_COMPLETE = 0, + CQ_EXCH_WQ_STATUS_TYPE_ABORT = 1, + CQ_EXCH_WQ_STATUS_TYPE_SGL_EOF = 2, + CQ_EXCH_WQ_STATUS_TYPE_TMPL_ERR = 3, +}; + +static inline void cq_exch_wq_desc_dec(struct cq_exch_wq_desc *desc_ptr, + u8 *type, + u8 *color, + u16 *q_number, + u16 *completed_index, + u8 *exch_status) +{ + cq_desc_dec((struct cq_desc *)desc_ptr, type, + color, q_number, completed_index); + *exch_status = desc_ptr->exch_status & CQ_EXCH_WQ_STATUS_MASK; +} + +struct cq_fcp_rq_desc { + u16 completed_index_eop_sop_prt; + u16 q_number; + u16 exchange_id; + u16 tmpl; + u16 bytes_written; + u16 vlan; + u8 sof; + u8 eof; + u8 fcs_fer_fck; + u8 type_color; +}; + +#define CQ_FCP_RQ_DESC_FLAGS_SOP (1 << 15) +#define CQ_FCP_RQ_DESC_FLAGS_EOP (1 << 14) +#define CQ_FCP_RQ_DESC_FLAGS_PRT (1 << 12) +#define CQ_FCP_RQ_DESC_TMPL_MASK 0x1f +#define CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK 0x3fff +#define CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT 14 +#define CQ_FCP_RQ_DESC_PACKET_ERR_MASK (1 << CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT) +#define CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT 15 +#define CQ_FCP_RQ_DESC_VS_STRIPPED_MASK (1 << CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT) +#define CQ_FCP_RQ_DESC_FC_CRC_OK_MASK 0x1 +#define CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT 1 +#define CQ_FCP_RQ_DESC_FCOE_ERR_MASK (1 << CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT) +#define CQ_FCP_RQ_DESC_FCS_OK_SHIFT 7 +#define CQ_FCP_RQ_DESC_FCS_OK_MASK (1 << CQ_FCP_RQ_DESC_FCS_OK_SHIFT) + +static inline void cq_fcp_rq_desc_dec(struct cq_fcp_rq_desc *desc_ptr, + u8 *type, + u8 *color, + u16 *q_number, + u16 *completed_index, + u8 *eop, + u8 *sop, + u8 *fck, + u16 *exchange_id, + u16 *tmpl, + u32 *bytes_written, + u8 *sof, + u8 *eof, + u8 *ingress_port, + u8 *packet_err, + u8 *fcoe_err, + u8 *fcs_ok, + u8 *vlan_stripped, + u16 *vlan) +{ + cq_desc_dec((struct cq_desc *)desc_ptr, type, + color, q_number, completed_index); + *eop = (desc_ptr->completed_index_eop_sop_prt & + CQ_FCP_RQ_DESC_FLAGS_EOP) ? 1 : 0; + *sop = (desc_ptr->completed_index_eop_sop_prt & + CQ_FCP_RQ_DESC_FLAGS_SOP) ? 1 : 0; + *ingress_port = + (desc_ptr->completed_index_eop_sop_prt & + CQ_FCP_RQ_DESC_FLAGS_PRT) ? 1 : 0; + *exchange_id = desc_ptr->exchange_id; + *tmpl = desc_ptr->tmpl & CQ_FCP_RQ_DESC_TMPL_MASK; + *bytes_written = + desc_ptr->bytes_written & CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK; + *packet_err = + (desc_ptr->bytes_written & CQ_FCP_RQ_DESC_PACKET_ERR_MASK) >> + CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT; + *vlan_stripped = + (desc_ptr->bytes_written & CQ_FCP_RQ_DESC_VS_STRIPPED_MASK) >> + CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT; + *vlan = desc_ptr->vlan; + *sof = desc_ptr->sof; + *fck = desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FC_CRC_OK_MASK; + *fcoe_err = (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCOE_ERR_MASK) >> + CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT; + *eof = desc_ptr->eof; + *fcs_ok = + (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCS_OK_MASK) >> + CQ_FCP_RQ_DESC_FCS_OK_SHIFT; +} + +struct cq_sgl_desc { + u16 exchange_id; + u16 q_number; + u32 active_burst_offset; + u32 tot_data_bytes; + u16 tmpl; + u8 sgl_err; + u8 type_color; +}; + +enum cq_sgl_err_types { + CQ_SGL_ERR_NO_ERROR = 0, + CQ_SGL_ERR_OVERFLOW, /* data ran beyond end of SGL */ + CQ_SGL_ERR_SGL_LCL_ADDR_ERR, /* sgl access to local vnic addr illegal*/ + CQ_SGL_ERR_ADDR_RSP_ERR, /* sgl address error */ + CQ_SGL_ERR_DATA_RSP_ERR, /* sgl data rsp error */ + CQ_SGL_ERR_CNT_ZERO_ERR, /* SGL count is 0 */ + CQ_SGL_ERR_CNT_MAX_ERR, /* SGL count is larger than supported */ + CQ_SGL_ERR_ORDER_ERR, /* frames recv on both ports, order err */ + CQ_SGL_ERR_DATA_LCL_ADDR_ERR,/* sgl data buf to local vnic addr ill */ + CQ_SGL_ERR_HOST_CQ_ERR, /* host cq entry to local vnic addr ill */ +}; + +#define CQ_SGL_SGL_ERR_MASK 0x1f +#define CQ_SGL_TMPL_MASK 0x1f + +static inline void cq_sgl_desc_dec(struct cq_sgl_desc *desc_ptr, + u8 *type, + u8 *color, + u16 *q_number, + u16 *exchange_id, + u32 *active_burst_offset, + u32 *tot_data_bytes, + u16 *tmpl, + u8 *sgl_err) +{ + /* Cheat a little by assuming exchange_id is the same as completed + index */ + cq_desc_dec((struct cq_desc *)desc_ptr, type, color, q_number, + exchange_id); + *active_burst_offset = desc_ptr->active_burst_offset; + *tot_data_bytes = desc_ptr->tot_data_bytes; + *tmpl = desc_ptr->tmpl & CQ_SGL_TMPL_MASK; + *sgl_err = desc_ptr->sgl_err & CQ_SGL_SGL_ERR_MASK; +} + +#endif /* _CQ_EXCH_DESC_H_ */ diff --git a/drivers/scsi/fnic/fcpio.h b/drivers/scsi/fnic/fcpio.h new file mode 100644 index 00000000000..12d770d885c --- /dev/null +++ b/drivers/scsi/fnic/fcpio.h @@ -0,0 +1,780 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _FCPIO_H_ +#define _FCPIO_H_ + +#include <linux/if_ether.h> + +/* + * This header file includes all of the data structures used for + * communication by the host driver to the fcp firmware. + */ + +/* + * Exchange and sequence id space allocated to the host driver + */ +#define FCPIO_HOST_EXCH_RANGE_START 0x1000 +#define FCPIO_HOST_EXCH_RANGE_END 0x1fff +#define FCPIO_HOST_SEQ_ID_RANGE_START 0x80 +#define FCPIO_HOST_SEQ_ID_RANGE_END 0xff + +/* + * Command entry type + */ +enum fcpio_type { + /* + * Initiator request types + */ + FCPIO_ICMND_16 = 0x1, + FCPIO_ICMND_32, + FCPIO_ICMND_CMPL, + FCPIO_ITMF, + FCPIO_ITMF_CMPL, + + /* + * Target request types + */ + FCPIO_TCMND_16 = 0x11, + FCPIO_TCMND_32, + FCPIO_TDATA, + FCPIO_TXRDY, + FCPIO_TRSP, + FCPIO_TDRSP_CMPL, + FCPIO_TTMF, + FCPIO_TTMF_ACK, + FCPIO_TABORT, + FCPIO_TABORT_CMPL, + + /* + * Misc request types + */ + FCPIO_ACK = 0x20, + FCPIO_RESET, + FCPIO_RESET_CMPL, + FCPIO_FLOGI_REG, + FCPIO_FLOGI_REG_CMPL, + FCPIO_ECHO, + FCPIO_ECHO_CMPL, + FCPIO_LUNMAP_CHNG, + FCPIO_LUNMAP_REQ, + FCPIO_LUNMAP_REQ_CMPL, + FCPIO_FLOGI_FIP_REG, + FCPIO_FLOGI_FIP_REG_CMPL, +}; + +/* + * Header status codes from the firmware + */ +enum fcpio_status { + FCPIO_SUCCESS = 0, /* request was successful */ + + /* + * If a request to the firmware is rejected, the original request + * header will be returned with the status set to one of the following: + */ + FCPIO_INVALID_HEADER, /* header contains invalid data */ + FCPIO_OUT_OF_RESOURCE, /* out of resources to complete request */ + FCPIO_INVALID_PARAM, /* some parameter in request is invalid */ + FCPIO_REQ_NOT_SUPPORTED, /* request type is not supported */ + FCPIO_IO_NOT_FOUND, /* requested I/O was not found */ + + /* + * Once a request is processed, the firmware will usually return + * a cmpl message type. In cases where errors occurred, + * the header status field would be filled in with one of the following: + */ + FCPIO_ABORTED = 0x41, /* request was aborted */ + FCPIO_TIMEOUT, /* request was timed out */ + FCPIO_SGL_INVALID, /* request was aborted due to sgl error */ + FCPIO_MSS_INVALID, /* request was aborted due to mss error */ + FCPIO_DATA_CNT_MISMATCH, /* recv/sent more/less data than exp. */ + FCPIO_FW_ERR, /* request was terminated due to fw error */ + FCPIO_ITMF_REJECTED, /* itmf req was rejected by remote node */ + FCPIO_ITMF_FAILED, /* itmf req was failed by remote node */ + FCPIO_ITMF_INCORRECT_LUN, /* itmf req targeted incorrect LUN */ + FCPIO_CMND_REJECTED, /* request was invalid and rejected */ + FCPIO_NO_PATH_AVAIL, /* no paths to the lun was available */ + FCPIO_PATH_FAILED, /* i/o sent to current path failed */ + FCPIO_LUNMAP_CHNG_PEND, /* i/o rejected due to lunmap change */ +}; + +/* + * The header command tag. All host requests will use the "tag" field + * to mark commands with a unique tag. When the firmware responds to + * a host request, it will copy the tag field into the response. + * + * The only firmware requests that will use the rx_id/ox_id fields instead + * of the tag field will be the target command and target task management + * requests. These two requests do not have corresponding host requests + * since they come directly from the FC initiator on the network. + */ +struct fcpio_tag { + union { + u32 req_id; + struct { + u16 rx_id; + u16 ox_id; + } ex_id; + } u; +}; + +static inline void +fcpio_tag_id_enc(struct fcpio_tag *tag, u32 id) +{ + tag->u.req_id = id; +} + +static inline void +fcpio_tag_id_dec(struct fcpio_tag *tag, u32 *id) +{ + *id = tag->u.req_id; +} + +static inline void +fcpio_tag_exid_enc(struct fcpio_tag *tag, u16 ox_id, u16 rx_id) +{ + tag->u.ex_id.rx_id = rx_id; + tag->u.ex_id.ox_id = ox_id; +} + +static inline void +fcpio_tag_exid_dec(struct fcpio_tag *tag, u16 *ox_id, u16 *rx_id) +{ + *rx_id = tag->u.ex_id.rx_id; + *ox_id = tag->u.ex_id.ox_id; +} + +/* + * The header for an fcpio request, whether from the firmware or from the + * host driver + */ +struct fcpio_header { + u8 type; /* enum fcpio_type */ + u8 status; /* header status entry */ + u16 _resvd; /* reserved */ + struct fcpio_tag tag; /* header tag */ +}; + +static inline void +fcpio_header_enc(struct fcpio_header *hdr, + u8 type, u8 status, + struct fcpio_tag tag) +{ + hdr->type = type; + hdr->status = status; + hdr->_resvd = 0; + hdr->tag = tag; +} + +static inline void +fcpio_header_dec(struct fcpio_header *hdr, + u8 *type, u8 *status, + struct fcpio_tag *tag) +{ + *type = hdr->type; + *status = hdr->status; + *tag = hdr->tag; +} + +#define CDB_16 16 +#define CDB_32 32 +#define LUN_ADDRESS 8 + +/* + * fcpio_icmnd_16: host -> firmware request + * + * used for sending out an initiator SCSI 16-byte command + */ +struct fcpio_icmnd_16 { + u32 lunmap_id; /* index into lunmap table */ + u8 special_req_flags; /* special exchange request flags */ + u8 _resvd0[3]; /* reserved */ + u32 sgl_cnt; /* scatter-gather list count */ + u32 sense_len; /* sense buffer length */ + u64 sgl_addr; /* scatter-gather list addr */ + u64 sense_addr; /* sense buffer address */ + u8 crn; /* SCSI Command Reference No. */ + u8 pri_ta; /* SCSI Priority and Task attribute */ + u8 _resvd1; /* reserved: should be 0 */ + u8 flags; /* command flags */ + u8 scsi_cdb[CDB_16]; /* SCSI Cmnd Descriptor Block */ + u32 data_len; /* length of data expected */ + u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */ + u8 _resvd2; /* reserved */ + u8 d_id[3]; /* FC vNIC only: Target D_ID */ + u16 mss; /* FC vNIC only: max burst */ + u16 _resvd3; /* reserved */ + u32 r_a_tov; /* FC vNIC only: Res. Alloc Timeout */ + u32 e_d_tov; /* FC vNIC only: Err Detect Timeout */ +}; + +/* + * Special request flags + */ +#define FCPIO_ICMND_SRFLAG_RETRY 0x01 /* Enable Retry handling on exchange */ + +/* + * Priority/Task Attribute settings + */ +#define FCPIO_ICMND_PTA_SIMPLE 0 /* simple task attribute */ +#define FCPIO_ICMND_PTA_HEADQ 1 /* head of queue task attribute */ +#define FCPIO_ICMND_PTA_ORDERED 2 /* ordered task attribute */ +#define FCPIO_ICMND_PTA_ACA 4 /* auto contingent allegiance */ +#define FCPIO_ICMND_PRI_SHIFT 3 /* priority field starts in bit 3 */ + +/* + * Command flags + */ +#define FCPIO_ICMND_RDDATA 0x02 /* read data */ +#define FCPIO_ICMND_WRDATA 0x01 /* write data */ + +/* + * fcpio_icmnd_32: host -> firmware request + * + * used for sending out an initiator SCSI 32-byte command + */ +struct fcpio_icmnd_32 { + u32 lunmap_id; /* index into lunmap table */ + u8 special_req_flags; /* special exchange request flags */ + u8 _resvd0[3]; /* reserved */ + u32 sgl_cnt; /* scatter-gather list count */ + u32 sense_len; /* sense buffer length */ + u64 sgl_addr; /* scatter-gather list addr */ + u64 sense_addr; /* sense buffer address */ + u8 crn; /* SCSI Command Reference No. */ + u8 pri_ta; /* SCSI Priority and Task attribute */ + u8 _resvd1; /* reserved: should be 0 */ + u8 flags; /* command flags */ + u8 scsi_cdb[CDB_32]; /* SCSI Cmnd Descriptor Block */ + u32 data_len; /* length of data expected */ + u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */ + u8 _resvd2; /* reserved */ + u8 d_id[3]; /* FC vNIC only: Target D_ID */ + u16 mss; /* FC vNIC only: max burst */ + u16 _resvd3; /* reserved */ + u32 r_a_tov; /* FC vNIC only: Res. Alloc Timeout */ + u32 e_d_tov; /* FC vNIC only: Error Detect Timeout */ +}; + +/* + * fcpio_itmf: host -> firmware request + * + * used for requesting the firmware to abort a request and/or send out + * a task management function + * + * The t_tag field is only needed when the request type is ABT_TASK. + */ +struct fcpio_itmf { + u32 lunmap_id; /* index into lunmap table */ + u32 tm_req; /* SCSI Task Management request */ + u32 t_tag; /* header tag of fcpio to be aborted */ + u32 _resvd; /* _reserved */ + u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */ + u8 _resvd1; /* reserved */ + u8 d_id[3]; /* FC vNIC only: Target D_ID */ + u32 r_a_tov; /* FC vNIC only: R_A_TOV in msec */ + u32 e_d_tov; /* FC vNIC only: E_D_TOV in msec */ +}; + +/* + * Task Management request + */ +enum fcpio_itmf_tm_req_type { + FCPIO_ITMF_ABT_TASK_TERM = 0x01, /* abort task and terminate */ + FCPIO_ITMF_ABT_TASK, /* abort task and issue abts */ + FCPIO_ITMF_ABT_TASK_SET, /* abort task set */ + FCPIO_ITMF_CLR_TASK_SET, /* clear task set */ + FCPIO_ITMF_LUN_RESET, /* logical unit reset task mgmt */ + FCPIO_ITMF_CLR_ACA, /* Clear ACA condition */ +}; + +/* + * fcpio_tdata: host -> firmware request + * + * used for requesting the firmware to send out a read data transfer for a + * target command + */ +struct fcpio_tdata { + u16 rx_id; /* FC rx_id of target command */ + u16 flags; /* command flags */ + u32 rel_offset; /* data sequence relative offset */ + u32 sgl_cnt; /* scatter-gather list count */ + u32 data_len; /* length of data expected to send */ + u64 sgl_addr; /* scatter-gather list address */ +}; + +/* + * Command flags + */ +#define FCPIO_TDATA_SCSI_RSP 0x01 /* send a scsi resp. after last frame */ + +/* + * fcpio_txrdy: host -> firmware request + * + * used for requesting the firmware to send out a write data transfer for a + * target command + */ +struct fcpio_txrdy { + u16 rx_id; /* FC rx_id of target command */ + u16 _resvd0; /* reserved */ + u32 rel_offset; /* data sequence relative offset */ + u32 sgl_cnt; /* scatter-gather list count */ + u32 data_len; /* length of data expected to send */ + u64 sgl_addr; /* scatter-gather list address */ +}; + +/* + * fcpio_trsp: host -> firmware request + * + * used for requesting the firmware to send out a response for a target + * command + */ +struct fcpio_trsp { + u16 rx_id; /* FC rx_id of target command */ + u16 _resvd0; /* reserved */ + u32 sense_len; /* sense data buffer length */ + u64 sense_addr; /* sense data buffer address */ + u16 _resvd1; /* reserved */ + u8 flags; /* response request flags */ + u8 scsi_status; /* SCSI status */ + u32 residual; /* SCSI data residual value of I/O */ +}; + +/* + * resposnse request flags + */ +#define FCPIO_TRSP_RESID_UNDER 0x08 /* residual is valid and is underflow */ +#define FCPIO_TRSP_RESID_OVER 0x04 /* residual is valid and is overflow */ + +/* + * fcpio_ttmf_ack: host -> firmware response + * + * used by the host to indicate to the firmware it has received and processed + * the target tmf request + */ +struct fcpio_ttmf_ack { + u16 rx_id; /* FC rx_id of target command */ + u16 _resvd0; /* reserved */ + u32 tmf_status; /* SCSI task management status */ +}; + +/* + * fcpio_tabort: host -> firmware request + * + * used by the host to request the firmware to abort a target request that was + * received by the firmware + */ +struct fcpio_tabort { + u16 rx_id; /* rx_id of the target request */ +}; + +/* + * fcpio_reset: host -> firmware request + * + * used by the host to signal a reset of the driver to the firmware + * and to request firmware to clean up all outstanding I/O + */ +struct fcpio_reset { + u32 _resvd; +}; + +enum fcpio_flogi_reg_format_type { + FCPIO_FLOGI_REG_DEF_DEST = 0, /* Use the oui | s_id mac format */ + FCPIO_FLOGI_REG_GW_DEST, /* Use the fixed gateway mac */ +}; + +/* + * fcpio_flogi_reg: host -> firmware request + * + * fc vnic only + * used by the host to notify the firmware of the lif's s_id + * and destination mac address format + */ +struct fcpio_flogi_reg { + u8 format; + u8 s_id[3]; /* FC vNIC only: Source S_ID */ + u8 gateway_mac[ETH_ALEN]; /* Destination gateway mac */ + u16 _resvd; + u32 r_a_tov; /* R_A_TOV in msec */ + u32 e_d_tov; /* E_D_TOV in msec */ +}; + +/* + * fcpio_echo: host -> firmware request + * + * sends a heartbeat echo request to the firmware + */ +struct fcpio_echo { + u32 _resvd; +}; + +/* + * fcpio_lunmap_req: host -> firmware request + * + * scsi vnic only + * sends a request to retrieve the lunmap table for scsi vnics + */ +struct fcpio_lunmap_req { + u64 addr; /* address of the buffer */ + u32 len; /* len of the buffer */ +}; + +/* + * fcpio_flogi_fip_reg: host -> firmware request + * + * fc vnic only + * used by the host to notify the firmware of the lif's s_id + * and destination mac address format + */ +struct fcpio_flogi_fip_reg { + u8 _resvd0; + u8 s_id[3]; /* FC vNIC only: Source S_ID */ + u8 fcf_mac[ETH_ALEN]; /* FCF Target destination mac */ + u16 _resvd1; + u32 r_a_tov; /* R_A_TOV in msec */ + u32 e_d_tov; /* E_D_TOV in msec */ + u8 ha_mac[ETH_ALEN]; /* Host adapter source mac */ + u16 _resvd2; +}; + +/* + * Basic structure for all fcpio structures that are sent from the host to the + * firmware. They are 128 bytes per structure. + */ +#define FCPIO_HOST_REQ_LEN 128 /* expected length of host requests */ + +struct fcpio_host_req { + struct fcpio_header hdr; + + union { + /* + * Defines space needed for request + */ + u8 buf[FCPIO_HOST_REQ_LEN - sizeof(struct fcpio_header)]; + + /* + * Initiator host requests + */ + struct fcpio_icmnd_16 icmnd_16; + struct fcpio_icmnd_32 icmnd_32; + struct fcpio_itmf itmf; + + /* + * Target host requests + */ + struct fcpio_tdata tdata; + struct fcpio_txrdy txrdy; + struct fcpio_trsp trsp; + struct fcpio_ttmf_ack ttmf_ack; + struct fcpio_tabort tabort; + + /* + * Misc requests + */ + struct fcpio_reset reset; + struct fcpio_flogi_reg flogi_reg; + struct fcpio_echo echo; + struct fcpio_lunmap_req lunmap_req; + struct fcpio_flogi_fip_reg flogi_fip_reg; + } u; +}; + +/* + * fcpio_icmnd_cmpl: firmware -> host response + * + * used for sending the host a response to an initiator command + */ +struct fcpio_icmnd_cmpl { + u8 _resvd0[6]; /* reserved */ + u8 flags; /* response flags */ + u8 scsi_status; /* SCSI status */ + u32 residual; /* SCSI data residual length */ + u32 sense_len; /* SCSI sense length */ +}; + +/* + * response flags + */ +#define FCPIO_ICMND_CMPL_RESID_UNDER 0x08 /* resid under and valid */ +#define FCPIO_ICMND_CMPL_RESID_OVER 0x04 /* resid over and valid */ + +/* + * fcpio_itmf_cmpl: firmware -> host response + * + * used for sending the host a response for a itmf request + */ +struct fcpio_itmf_cmpl { + u32 _resvd; /* reserved */ +}; + +/* + * fcpio_tcmnd_16: firmware -> host request + * + * used by the firmware to notify the host of an incoming target SCSI 16-Byte + * request + */ +struct fcpio_tcmnd_16 { + u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */ + u8 crn; /* SCSI Command Reference No. */ + u8 pri_ta; /* SCSI Priority and Task attribute */ + u8 _resvd2; /* reserved: should be 0 */ + u8 flags; /* command flags */ + u8 scsi_cdb[CDB_16]; /* SCSI Cmnd Descriptor Block */ + u32 data_len; /* length of data expected */ + u8 _resvd1; /* reserved */ + u8 s_id[3]; /* FC vNIC only: Source S_ID */ +}; + +/* + * Priority/Task Attribute settings + */ +#define FCPIO_TCMND_PTA_SIMPLE 0 /* simple task attribute */ +#define FCPIO_TCMND_PTA_HEADQ 1 /* head of queue task attribute */ +#define FCPIO_TCMND_PTA_ORDERED 2 /* ordered task attribute */ +#define FCPIO_TCMND_PTA_ACA 4 /* auto contingent allegiance */ +#define FCPIO_TCMND_PRI_SHIFT 3 /* priority field starts in bit 3 */ + +/* + * Command flags + */ +#define FCPIO_TCMND_RDDATA 0x02 /* read data */ +#define FCPIO_TCMND_WRDATA 0x01 /* write data */ + +/* + * fcpio_tcmnd_32: firmware -> host request + * + * used by the firmware to notify the host of an incoming target SCSI 32-Byte + * request + */ +struct fcpio_tcmnd_32 { + u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */ + u8 crn; /* SCSI Command Reference No. */ + u8 pri_ta; /* SCSI Priority and Task attribute */ + u8 _resvd2; /* reserved: should be 0 */ + u8 flags; /* command flags */ + u8 scsi_cdb[CDB_32]; /* SCSI Cmnd Descriptor Block */ + u32 data_len; /* length of data expected */ + u8 _resvd0; /* reserved */ + u8 s_id[3]; /* FC vNIC only: Source S_ID */ +}; + +/* + * fcpio_tdrsp_cmpl: firmware -> host response + * + * used by the firmware to notify the host of a response to a host target + * command + */ +struct fcpio_tdrsp_cmpl { + u16 rx_id; /* rx_id of the target request */ + u16 _resvd0; /* reserved */ +}; + +/* + * fcpio_ttmf: firmware -> host request + * + * used by the firmware to notify the host of an incoming task management + * function request + */ +struct fcpio_ttmf { + u8 _resvd0; /* reserved */ + u8 s_id[3]; /* FC vNIC only: Source S_ID */ + u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */ + u8 crn; /* SCSI Command Reference No. */ + u8 _resvd2[3]; /* reserved */ + u32 tmf_type; /* task management request type */ +}; + +/* + * Task Management request + */ +#define FCPIO_TTMF_CLR_ACA 0x40 /* Clear ACA condition */ +#define FCPIO_TTMF_LUN_RESET 0x10 /* logical unit reset task mgmt */ +#define FCPIO_TTMF_CLR_TASK_SET 0x04 /* clear task set */ +#define FCPIO_TTMF_ABT_TASK_SET 0x02 /* abort task set */ +#define FCPIO_TTMF_ABT_TASK 0x01 /* abort task */ + +/* + * fcpio_tabort_cmpl: firmware -> host response + * + * used by the firmware to respond to a host's tabort request + */ +struct fcpio_tabort_cmpl { + u16 rx_id; /* rx_id of the target request */ + u16 _resvd0; /* reserved */ +}; + +/* + * fcpio_ack: firmware -> host response + * + * used by firmware to notify the host of the last work request received + */ +struct fcpio_ack { + u16 request_out; /* last host entry received */ + u16 _resvd; +}; + +/* + * fcpio_reset_cmpl: firmware -> host response + * + * use by firmware to respond to the host's reset request + */ +struct fcpio_reset_cmpl { + u16 vnic_id; +}; + +/* + * fcpio_flogi_reg_cmpl: firmware -> host response + * + * fc vnic only + * response to the fcpio_flogi_reg request + */ +struct fcpio_flogi_reg_cmpl { + u32 _resvd; +}; + +/* + * fcpio_echo_cmpl: firmware -> host response + * + * response to the fcpio_echo request + */ +struct fcpio_echo_cmpl { + u32 _resvd; +}; + +/* + * fcpio_lunmap_chng: firmware -> host notification + * + * scsi vnic only + * notifies the host that the lunmap tables have changed + */ +struct fcpio_lunmap_chng { + u32 _resvd; +}; + +/* + * fcpio_lunmap_req_cmpl: firmware -> host response + * + * scsi vnic only + * response for lunmap table request from the host + */ +struct fcpio_lunmap_req_cmpl { + u32 _resvd; +}; + +/* + * Basic structure for all fcpio structures that are sent from the firmware to + * the host. They are 64 bytes per structure. + */ +#define FCPIO_FW_REQ_LEN 64 /* expected length of fw requests */ +struct fcpio_fw_req { + struct fcpio_header hdr; + + union { + /* + * Defines space needed for request + */ + u8 buf[FCPIO_FW_REQ_LEN - sizeof(struct fcpio_header)]; + + /* + * Initiator firmware responses + */ + struct fcpio_icmnd_cmpl icmnd_cmpl; + struct fcpio_itmf_cmpl itmf_cmpl; + + /* + * Target firmware new requests + */ + struct fcpio_tcmnd_16 tcmnd_16; + struct fcpio_tcmnd_32 tcmnd_32; + + /* + * Target firmware responses + */ + struct fcpio_tdrsp_cmpl tdrsp_cmpl; + struct fcpio_ttmf ttmf; + struct fcpio_tabort_cmpl tabort_cmpl; + + /* + * Firmware response to work received + */ + struct fcpio_ack ack; + + /* + * Misc requests + */ + struct fcpio_reset_cmpl reset_cmpl; + struct fcpio_flogi_reg_cmpl flogi_reg_cmpl; + struct fcpio_echo_cmpl echo_cmpl; + struct fcpio_lunmap_chng lunmap_chng; + struct fcpio_lunmap_req_cmpl lunmap_req_cmpl; + } u; +}; + +/* + * Access routines to encode and decode the color bit, which is the most + * significant bit of the MSB of the structure + */ +static inline void fcpio_color_enc(struct fcpio_fw_req *fw_req, u8 color) +{ + u8 *c = ((u8 *) fw_req) + sizeof(struct fcpio_fw_req) - 1; + + if (color) + *c |= 0x80; + else + *c &= ~0x80; +} + +static inline void fcpio_color_dec(struct fcpio_fw_req *fw_req, u8 *color) +{ + u8 *c = ((u8 *) fw_req) + sizeof(struct fcpio_fw_req) - 1; + + *color = *c >> 7; + + /* + * Make sure color bit is read from desc *before* other fields + * are read from desc. Hardware guarantees color bit is last + * bit (byte) written. Adding the rmb() prevents the compiler + * and/or CPU from reordering the reads which would potentially + * result in reading stale values. + */ + + rmb(); + +} + +/* + * Lunmap table entry for scsi vnics + */ +#define FCPIO_LUNMAP_TABLE_SIZE 256 +#define FCPIO_FLAGS_LUNMAP_VALID 0x80 +#define FCPIO_FLAGS_BOOT 0x01 +struct fcpio_lunmap_entry { + u8 bus; + u8 target; + u8 lun; + u8 path_cnt; + u16 flags; + u16 update_cnt; +}; + +struct fcpio_lunmap_tbl { + u32 update_cnt; + struct fcpio_lunmap_entry lunmaps[FCPIO_LUNMAP_TABLE_SIZE]; +}; + +#endif /* _FCPIO_H_ */ diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h new file mode 100644 index 00000000000..e4c0a3d7d87 --- /dev/null +++ b/drivers/scsi/fnic/fnic.h @@ -0,0 +1,265 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _FNIC_H_ +#define _FNIC_H_ + +#include <linux/interrupt.h> +#include <linux/netdevice.h> +#include <linux/workqueue.h> +#include <scsi/libfc.h> +#include "fnic_io.h" +#include "fnic_res.h" +#include "vnic_dev.h" +#include "vnic_wq.h" +#include "vnic_rq.h" +#include "vnic_cq.h" +#include "vnic_wq_copy.h" +#include "vnic_intr.h" +#include "vnic_stats.h" +#include "vnic_scsi.h" + +#define DRV_NAME "fnic" +#define DRV_DESCRIPTION "Cisco FCoE HBA Driver" +#define DRV_VERSION "1.0.0.1121" +#define PFX DRV_NAME ": " +#define DFX DRV_NAME "%d: " + +#define DESC_CLEAN_LOW_WATERMARK 8 +#define FNIC_MAX_IO_REQ 2048 /* scsi_cmnd tag map entries */ +#define FNIC_IO_LOCKS 64 /* IO locks: power of 2 */ +#define FNIC_DFLT_QUEUE_DEPTH 32 +#define FNIC_STATS_RATE_LIMIT 4 /* limit rate at which stats are pulled up */ + +/* + * Tag bits used for special requests. + */ +#define BIT(nr) (1UL << (nr)) +#define FNIC_TAG_ABORT BIT(30) /* tag bit indicating abort */ +#define FNIC_TAG_DEV_RST BIT(29) /* indicates device reset */ +#define FNIC_TAG_MASK (BIT(24) - 1) /* mask for lookup */ +#define FNIC_NO_TAG -1 + +/* + * Usage of the scsi_cmnd scratchpad. + * These fields are locked by the hashed io_req_lock. + */ +#define CMD_SP(Cmnd) ((Cmnd)->SCp.ptr) +#define CMD_STATE(Cmnd) ((Cmnd)->SCp.phase) +#define CMD_ABTS_STATUS(Cmnd) ((Cmnd)->SCp.Message) +#define CMD_LR_STATUS(Cmnd) ((Cmnd)->SCp.have_data_in) +#define CMD_TAG(Cmnd) ((Cmnd)->SCp.sent_command) + +#define FCPIO_INVALID_CODE 0x100 /* hdr_status value unused by firmware */ + +#define FNIC_LUN_RESET_TIMEOUT 10000 /* mSec */ +#define FNIC_HOST_RESET_TIMEOUT 10000 /* mSec */ +#define FNIC_RMDEVICE_TIMEOUT 1000 /* mSec */ +#define FNIC_HOST_RESET_SETTLE_TIME 30 /* Sec */ + +#define FNIC_MAX_FCP_TARGET 256 + +extern unsigned int fnic_log_level; + +#define FNIC_MAIN_LOGGING 0x01 +#define FNIC_FCS_LOGGING 0x02 +#define FNIC_SCSI_LOGGING 0x04 +#define FNIC_ISR_LOGGING 0x08 + +#define FNIC_CHECK_LOGGING(LEVEL, CMD) \ +do { \ + if (unlikely(fnic_log_level & LEVEL)) \ + do { \ + CMD; \ + } while (0); \ +} while (0) + +#define FNIC_MAIN_DBG(kern_level, host, fmt, args...) \ + FNIC_CHECK_LOGGING(FNIC_MAIN_LOGGING, \ + shost_printk(kern_level, host, fmt, ##args);) + +#define FNIC_FCS_DBG(kern_level, host, fmt, args...) \ + FNIC_CHECK_LOGGING(FNIC_FCS_LOGGING, \ + shost_printk(kern_level, host, fmt, ##args);) + +#define FNIC_SCSI_DBG(kern_level, host, fmt, args...) \ + FNIC_CHECK_LOGGING(FNIC_SCSI_LOGGING, \ + shost_printk(kern_level, host, fmt, ##args);) + +#define FNIC_ISR_DBG(kern_level, host, fmt, args...) \ + FNIC_CHECK_LOGGING(FNIC_ISR_LOGGING, \ + shost_printk(kern_level, host, fmt, ##args);) + +extern const char *fnic_state_str[]; + +enum fnic_intx_intr_index { + FNIC_INTX_WQ_RQ_COPYWQ, + FNIC_INTX_ERR, + FNIC_INTX_NOTIFY, + FNIC_INTX_INTR_MAX, +}; + +enum fnic_msix_intr_index { + FNIC_MSIX_RQ, + FNIC_MSIX_WQ, + FNIC_MSIX_WQ_COPY, + FNIC_MSIX_ERR_NOTIFY, + FNIC_MSIX_INTR_MAX, +}; + +struct fnic_msix_entry { + int requested; + char devname[IFNAMSIZ]; + irqreturn_t (*isr)(int, void *); + void *devid; +}; + +enum fnic_state { + FNIC_IN_FC_MODE = 0, + FNIC_IN_FC_TRANS_ETH_MODE, + FNIC_IN_ETH_MODE, + FNIC_IN_ETH_TRANS_FC_MODE, +}; + +#define FNIC_WQ_COPY_MAX 1 +#define FNIC_WQ_MAX 1 +#define FNIC_RQ_MAX 1 +#define FNIC_CQ_MAX (FNIC_WQ_COPY_MAX + FNIC_WQ_MAX + FNIC_RQ_MAX) + +struct mempool; + +/* Per-instance private data structure */ +struct fnic { + struct fc_lport *lport; + struct vnic_dev_bar bar0; + + struct msix_entry msix_entry[FNIC_MSIX_INTR_MAX]; + struct fnic_msix_entry msix[FNIC_MSIX_INTR_MAX]; + + struct vnic_stats *stats; + unsigned long stats_time; /* time of stats update */ + struct vnic_nic_cfg *nic_cfg; + char name[IFNAMSIZ]; + struct timer_list notify_timer; /* used for MSI interrupts */ + + unsigned int err_intr_offset; + unsigned int link_intr_offset; + + unsigned int wq_count; + unsigned int cq_count; + + u32 fcoui_mode:1; /* use fcoui address*/ + u32 vlan_hw_insert:1; /* let hw insert the tag */ + u32 in_remove:1; /* fnic device in removal */ + u32 stop_rx_link_events:1; /* stop proc. rx frames, link events */ + + struct completion *remove_wait; /* device remove thread blocks */ + + struct fc_frame *flogi; + struct fc_frame *flogi_resp; + u16 flogi_oxid; + unsigned long s_id; + enum fnic_state state; + spinlock_t fnic_lock; + + u16 vlan_id; /* VLAN tag including priority */ + u8 mac_addr[ETH_ALEN]; + u8 dest_addr[ETH_ALEN]; + u8 data_src_addr[ETH_ALEN]; + u64 fcp_input_bytes; /* internal statistic */ + u64 fcp_output_bytes; /* internal statistic */ + u32 link_down_cnt; + int link_status; + + struct list_head list; + struct pci_dev *pdev; + struct vnic_fc_config config; + struct vnic_dev *vdev; + unsigned int raw_wq_count; + unsigned int wq_copy_count; + unsigned int rq_count; + int fw_ack_index[FNIC_WQ_COPY_MAX]; + unsigned short fw_ack_recd[FNIC_WQ_COPY_MAX]; + unsigned short wq_copy_desc_low[FNIC_WQ_COPY_MAX]; + unsigned int intr_count; + u32 __iomem *legacy_pba; + struct fnic_host_tag *tags; + mempool_t *io_req_pool; + mempool_t *io_sgl_pool[FNIC_SGL_NUM_CACHES]; + spinlock_t io_req_lock[FNIC_IO_LOCKS]; /* locks for scsi cmnds */ + + struct work_struct link_work; + struct work_struct frame_work; + struct sk_buff_head frame_queue; + + /* copy work queue cache line section */ + ____cacheline_aligned struct vnic_wq_copy wq_copy[FNIC_WQ_COPY_MAX]; + /* completion queue cache line section */ + ____cacheline_aligned struct vnic_cq cq[FNIC_CQ_MAX]; + + spinlock_t wq_copy_lock[FNIC_WQ_COPY_MAX]; + + /* work queue cache line section */ + ____cacheline_aligned struct vnic_wq wq[FNIC_WQ_MAX]; + spinlock_t wq_lock[FNIC_WQ_MAX]; + + /* receive queue cache line section */ + ____cacheline_aligned struct vnic_rq rq[FNIC_RQ_MAX]; + + /* interrupt resource cache line section */ + ____cacheline_aligned struct vnic_intr intr[FNIC_MSIX_INTR_MAX]; +}; + +extern struct workqueue_struct *fnic_event_queue; +extern struct device_attribute *fnic_attrs[]; + +void fnic_clear_intr_mode(struct fnic *fnic); +int fnic_set_intr_mode(struct fnic *fnic); +void fnic_free_intr(struct fnic *fnic); +int fnic_request_intr(struct fnic *fnic); + +int fnic_send(struct fc_lport *, struct fc_frame *); +void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf); +void fnic_handle_frame(struct work_struct *work); +void fnic_handle_link(struct work_struct *work); +int fnic_rq_cmpl_handler(struct fnic *fnic, int); +int fnic_alloc_rq_frame(struct vnic_rq *rq); +void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf); +int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp); + +int fnic_queuecommand(struct scsi_cmnd *, void (*done)(struct scsi_cmnd *)); +int fnic_abort_cmd(struct scsi_cmnd *); +int fnic_device_reset(struct scsi_cmnd *); +int fnic_host_reset(struct scsi_cmnd *); +int fnic_reset(struct Scsi_Host *); +void fnic_scsi_cleanup(struct fc_lport *); +void fnic_scsi_abort_io(struct fc_lport *); +void fnic_empty_scsi_cleanup(struct fc_lport *); +void fnic_exch_mgr_reset(struct fc_lport *, u32, u32); +int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int); +int fnic_wq_cmpl_handler(struct fnic *fnic, int); +int fnic_flogi_reg_handler(struct fnic *fnic); +void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, + struct fcpio_host_req *desc); +int fnic_fw_reset_handler(struct fnic *fnic); +void fnic_terminate_rport_io(struct fc_rport *); +const char *fnic_state_to_str(unsigned int state); + +void fnic_log_q_error(struct fnic *fnic); +void fnic_handle_link_event(struct fnic *fnic); + +#endif /* _FNIC_H_ */ diff --git a/drivers/scsi/fnic/fnic_attrs.c b/drivers/scsi/fnic/fnic_attrs.c new file mode 100644 index 00000000000..aea0c3becfd --- /dev/null +++ b/drivers/scsi/fnic/fnic_attrs.c @@ -0,0 +1,56 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include <linux/string.h> +#include <linux/device.h> +#include <scsi/scsi_host.h> +#include "fnic.h" + +static ssize_t fnic_show_state(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fc_lport *lp = shost_priv(class_to_shost(dev)); + struct fnic *fnic = lport_priv(lp); + + return snprintf(buf, PAGE_SIZE, "%s\n", fnic_state_str[fnic->state]); +} + +static ssize_t fnic_show_drv_version(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%s\n", DRV_VERSION); +} + +static ssize_t fnic_show_link_state(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fc_lport *lp = shost_priv(class_to_shost(dev)); + + return snprintf(buf, PAGE_SIZE, "%s\n", (lp->link_up) + ? "Link Up" : "Link Down"); +} + +static DEVICE_ATTR(fnic_state, S_IRUGO, fnic_show_state, NULL); +static DEVICE_ATTR(drv_version, S_IRUGO, fnic_show_drv_version, NULL); +static DEVICE_ATTR(link_state, S_IRUGO, fnic_show_link_state, NULL); + +struct device_attribute *fnic_attrs[] = { + &dev_attr_fnic_state, + &dev_attr_drv_version, + &dev_attr_link_state, + NULL, +}; diff --git a/drivers/scsi/fnic/fnic_fcs.c b/drivers/scsi/fnic/fnic_fcs.c new file mode 100644 index 00000000000..07e6eedb83c --- /dev/null +++ b/drivers/scsi/fnic/fnic_fcs.c @@ -0,0 +1,742 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include <linux/errno.h> +#include <linux/pci.h> +#include <linux/skbuff.h> +#include <linux/interrupt.h> +#include <linux/spinlock.h> +#include <linux/if_ether.h> +#include <linux/if_vlan.h> +#include <linux/workqueue.h> +#include <scsi/fc/fc_els.h> +#include <scsi/fc/fc_fcoe.h> +#include <scsi/fc_frame.h> +#include <scsi/libfc.h> +#include "fnic_io.h" +#include "fnic.h" +#include "cq_enet_desc.h" +#include "cq_exch_desc.h" + +struct workqueue_struct *fnic_event_queue; + +void fnic_handle_link(struct work_struct *work) +{ + struct fnic *fnic = container_of(work, struct fnic, link_work); + unsigned long flags; + int old_link_status; + u32 old_link_down_cnt; + + spin_lock_irqsave(&fnic->fnic_lock, flags); + + if (fnic->stop_rx_link_events) { + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + return; + } + + old_link_down_cnt = fnic->link_down_cnt; + old_link_status = fnic->link_status; + fnic->link_status = vnic_dev_link_status(fnic->vdev); + fnic->link_down_cnt = vnic_dev_link_down_cnt(fnic->vdev); + + if (old_link_status == fnic->link_status) { + if (!fnic->link_status) + /* DOWN -> DOWN */ + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + else { + if (old_link_down_cnt != fnic->link_down_cnt) { + /* UP -> DOWN -> UP */ + fnic->lport->host_stats.link_failure_count++; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, + "link down\n"); + fc_linkdown(fnic->lport); + FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, + "link up\n"); + fc_linkup(fnic->lport); + } else + /* UP -> UP */ + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + } + } else if (fnic->link_status) { + /* DOWN -> UP */ + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link up\n"); + fc_linkup(fnic->lport); + } else { + /* UP -> DOWN */ + fnic->lport->host_stats.link_failure_count++; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link down\n"); + fc_linkdown(fnic->lport); + } + +} + +/* + * This function passes incoming fabric frames to libFC + */ +void fnic_handle_frame(struct work_struct *work) +{ + struct fnic *fnic = container_of(work, struct fnic, frame_work); + struct fc_lport *lp = fnic->lport; + unsigned long flags; + struct sk_buff *skb; + struct fc_frame *fp; + + while ((skb = skb_dequeue(&fnic->frame_queue))) { + + spin_lock_irqsave(&fnic->fnic_lock, flags); + if (fnic->stop_rx_link_events) { + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + dev_kfree_skb(skb); + return; + } + fp = (struct fc_frame *)skb; + /* if Flogi resp frame, register the address */ + if (fr_flags(fp)) { + vnic_dev_add_addr(fnic->vdev, + fnic->data_src_addr); + fr_flags(fp) = 0; + } + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + fc_exch_recv(lp, lp->emp, fp); + } + +} + +static inline void fnic_import_rq_fc_frame(struct sk_buff *skb, + u32 len, u8 sof, u8 eof) +{ + struct fc_frame *fp = (struct fc_frame *)skb; + + skb_trim(skb, len); + fr_eof(fp) = eof; + fr_sof(fp) = sof; +} + + +static inline int fnic_import_rq_eth_pkt(struct sk_buff *skb, u32 len) +{ + struct fc_frame *fp; + struct ethhdr *eh; + struct vlan_ethhdr *vh; + struct fcoe_hdr *fcoe_hdr; + struct fcoe_crc_eof *ft; + u32 transport_len = 0; + + eh = (struct ethhdr *)skb->data; + vh = (struct vlan_ethhdr *)skb->data; + if (vh->h_vlan_proto == htons(ETH_P_8021Q) && + vh->h_vlan_encapsulated_proto == htons(ETH_P_FCOE)) { + skb_pull(skb, sizeof(struct vlan_ethhdr)); + transport_len += sizeof(struct vlan_ethhdr); + } else if (eh->h_proto == htons(ETH_P_FCOE)) { + transport_len += sizeof(struct ethhdr); + skb_pull(skb, sizeof(struct ethhdr)); + } else + return -1; + + fcoe_hdr = (struct fcoe_hdr *)skb->data; + if (FC_FCOE_DECAPS_VER(fcoe_hdr) != FC_FCOE_VER) + return -1; + + fp = (struct fc_frame *)skb; + fc_frame_init(fp); + fr_sof(fp) = fcoe_hdr->fcoe_sof; + skb_pull(skb, sizeof(struct fcoe_hdr)); + transport_len += sizeof(struct fcoe_hdr); + + ft = (struct fcoe_crc_eof *)(skb->data + len - + transport_len - sizeof(*ft)); + fr_eof(fp) = ft->fcoe_eof; + skb_trim(skb, len - transport_len - sizeof(*ft)); + return 0; +} + +static inline int fnic_handle_flogi_resp(struct fnic *fnic, + struct fc_frame *fp) +{ + u8 mac[ETH_ALEN] = FC_FCOE_FLOGI_MAC; + struct ethhdr *eth_hdr; + struct fc_frame_header *fh; + int ret = 0; + unsigned long flags; + struct fc_frame *old_flogi_resp = NULL; + + fh = (struct fc_frame_header *)fr_hdr(fp); + + spin_lock_irqsave(&fnic->fnic_lock, flags); + + if (fnic->state == FNIC_IN_ETH_MODE) { + + /* + * Check if oxid matches on taking the lock. A new Flogi + * issued by libFC might have changed the fnic cached oxid + */ + if (fnic->flogi_oxid != ntohs(fh->fh_ox_id)) { + FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, + "Flogi response oxid not" + " matching cached oxid, dropping frame" + "\n"); + ret = -1; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + dev_kfree_skb_irq(fp_skb(fp)); + goto handle_flogi_resp_end; + } + + /* Drop older cached flogi response frame, cache this frame */ + old_flogi_resp = fnic->flogi_resp; + fnic->flogi_resp = fp; + fnic->flogi_oxid = FC_XID_UNKNOWN; + + /* + * this frame is part of flogi get the src mac addr from this + * frame if the src mac is fcoui based then we mark the + * address mode flag to use fcoui base for dst mac addr + * otherwise we have to store the fcoe gateway addr + */ + eth_hdr = (struct ethhdr *)skb_mac_header(fp_skb(fp)); + memcpy(mac, eth_hdr->h_source, ETH_ALEN); + + if (ntoh24(mac) == FC_FCOE_OUI) + fnic->fcoui_mode = 1; + else { + fnic->fcoui_mode = 0; + memcpy(fnic->dest_addr, mac, ETH_ALEN); + } + + /* + * Except for Flogi frame, all outbound frames from us have the + * Eth Src address as FC_FCOE_OUI"our_sid". Flogi frame uses + * the vnic MAC address as the Eth Src address + */ + fc_fcoe_set_mac(fnic->data_src_addr, fh->fh_d_id); + + /* We get our s_id from the d_id of the flogi resp frame */ + fnic->s_id = ntoh24(fh->fh_d_id); + + /* Change state to reflect transition from Eth to FC mode */ + fnic->state = FNIC_IN_ETH_TRANS_FC_MODE; + + } else { + FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, + "Unexpected fnic state %s while" + " processing flogi resp\n", + fnic_state_to_str(fnic->state)); + ret = -1; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + dev_kfree_skb_irq(fp_skb(fp)); + goto handle_flogi_resp_end; + } + + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + /* Drop older cached frame */ + if (old_flogi_resp) + dev_kfree_skb_irq(fp_skb(old_flogi_resp)); + + /* + * send flogi reg request to firmware, this will put the fnic in + * in FC mode + */ + ret = fnic_flogi_reg_handler(fnic); + + if (ret < 0) { + int free_fp = 1; + spin_lock_irqsave(&fnic->fnic_lock, flags); + /* + * free the frame is some other thread is not + * pointing to it + */ + if (fnic->flogi_resp != fp) + free_fp = 0; + else + fnic->flogi_resp = NULL; + + if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE) + fnic->state = FNIC_IN_ETH_MODE; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + if (free_fp) + dev_kfree_skb_irq(fp_skb(fp)); + } + + handle_flogi_resp_end: + return ret; +} + +/* Returns 1 for a response that matches cached flogi oxid */ +static inline int is_matching_flogi_resp_frame(struct fnic *fnic, + struct fc_frame *fp) +{ + struct fc_frame_header *fh; + int ret = 0; + u32 f_ctl; + + fh = fc_frame_header_get(fp); + f_ctl = ntoh24(fh->fh_f_ctl); + + if (fnic->flogi_oxid == ntohs(fh->fh_ox_id) && + fh->fh_r_ctl == FC_RCTL_ELS_REP && + (f_ctl & (FC_FC_EX_CTX | FC_FC_SEQ_CTX)) == FC_FC_EX_CTX && + fh->fh_type == FC_TYPE_ELS) + ret = 1; + + return ret; +} + +static void fnic_rq_cmpl_frame_recv(struct vnic_rq *rq, struct cq_desc + *cq_desc, struct vnic_rq_buf *buf, + int skipped __attribute__((unused)), + void *opaque) +{ + struct fnic *fnic = vnic_dev_priv(rq->vdev); + struct sk_buff *skb; + struct fc_frame *fp; + unsigned int eth_hdrs_stripped; + u8 type, color, eop, sop, ingress_port, vlan_stripped; + u8 fcoe = 0, fcoe_sof, fcoe_eof; + u8 fcoe_fc_crc_ok = 1, fcoe_enc_error = 0; + u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; + u8 ipv6, ipv4, ipv4_fragment, rss_type, csum_not_calc; + u8 fcs_ok = 1, packet_error = 0; + u16 q_number, completed_index, bytes_written = 0, vlan, checksum; + u32 rss_hash; + u16 exchange_id, tmpl; + u8 sof = 0; + u8 eof = 0; + u32 fcp_bytes_written = 0; + unsigned long flags; + + pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len, + PCI_DMA_FROMDEVICE); + skb = buf->os_buf; + buf->os_buf = NULL; + + cq_desc_dec(cq_desc, &type, &color, &q_number, &completed_index); + if (type == CQ_DESC_TYPE_RQ_FCP) { + cq_fcp_rq_desc_dec((struct cq_fcp_rq_desc *)cq_desc, + &type, &color, &q_number, &completed_index, + &eop, &sop, &fcoe_fc_crc_ok, &exchange_id, + &tmpl, &fcp_bytes_written, &sof, &eof, + &ingress_port, &packet_error, + &fcoe_enc_error, &fcs_ok, &vlan_stripped, + &vlan); + eth_hdrs_stripped = 1; + + } else if (type == CQ_DESC_TYPE_RQ_ENET) { + cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, + &type, &color, &q_number, &completed_index, + &ingress_port, &fcoe, &eop, &sop, + &rss_type, &csum_not_calc, &rss_hash, + &bytes_written, &packet_error, + &vlan_stripped, &vlan, &checksum, + &fcoe_sof, &fcoe_fc_crc_ok, + &fcoe_enc_error, &fcoe_eof, + &tcp_udp_csum_ok, &udp, &tcp, + &ipv4_csum_ok, &ipv6, &ipv4, + &ipv4_fragment, &fcs_ok); + eth_hdrs_stripped = 0; + + } else { + /* wrong CQ type*/ + shost_printk(KERN_ERR, fnic->lport->host, + "fnic rq_cmpl wrong cq type x%x\n", type); + goto drop; + } + + if (!fcs_ok || packet_error || !fcoe_fc_crc_ok || fcoe_enc_error) { + FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, + "fnic rq_cmpl fcoe x%x fcsok x%x" + " pkterr x%x fcoe_fc_crc_ok x%x, fcoe_enc_err" + " x%x\n", + fcoe, fcs_ok, packet_error, + fcoe_fc_crc_ok, fcoe_enc_error); + goto drop; + } + + if (eth_hdrs_stripped) + fnic_import_rq_fc_frame(skb, fcp_bytes_written, sof, eof); + else if (fnic_import_rq_eth_pkt(skb, bytes_written)) + goto drop; + + fp = (struct fc_frame *)skb; + + /* + * If frame is an ELS response that matches the cached FLOGI OX_ID, + * and is accept, issue flogi_reg_request copy wq request to firmware + * to register the S_ID and determine whether FC_OUI mode or GW mode. + */ + if (is_matching_flogi_resp_frame(fnic, fp)) { + if (!eth_hdrs_stripped) { + if (fc_frame_payload_op(fp) == ELS_LS_ACC) { + fnic_handle_flogi_resp(fnic, fp); + return; + } + /* + * Recd. Flogi reject. No point registering + * with fw, but forward to libFC + */ + goto forward; + } + goto drop; + } + if (!eth_hdrs_stripped) + goto drop; + +forward: + spin_lock_irqsave(&fnic->fnic_lock, flags); + if (fnic->stop_rx_link_events) { + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + goto drop; + } + /* Use fr_flags to indicate whether succ. flogi resp or not */ + fr_flags(fp) = 0; + fr_dev(fp) = fnic->lport; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + skb_queue_tail(&fnic->frame_queue, skb); + queue_work(fnic_event_queue, &fnic->frame_work); + + return; +drop: + dev_kfree_skb_irq(skb); +} + +static int fnic_rq_cmpl_handler_cont(struct vnic_dev *vdev, + struct cq_desc *cq_desc, u8 type, + u16 q_number, u16 completed_index, + void *opaque) +{ + struct fnic *fnic = vnic_dev_priv(vdev); + + vnic_rq_service(&fnic->rq[q_number], cq_desc, completed_index, + VNIC_RQ_RETURN_DESC, fnic_rq_cmpl_frame_recv, + NULL); + return 0; +} + +int fnic_rq_cmpl_handler(struct fnic *fnic, int rq_work_to_do) +{ + unsigned int tot_rq_work_done = 0, cur_work_done; + unsigned int i; + int err; + + for (i = 0; i < fnic->rq_count; i++) { + cur_work_done = vnic_cq_service(&fnic->cq[i], rq_work_to_do, + fnic_rq_cmpl_handler_cont, + NULL); + if (cur_work_done) { + err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); + if (err) + shost_printk(KERN_ERR, fnic->lport->host, + "fnic_alloc_rq_frame cant alloc" + " frame\n"); + } + tot_rq_work_done += cur_work_done; + } + + return tot_rq_work_done; +} + +/* + * This function is called once at init time to allocate and fill RQ + * buffers. Subsequently, it is called in the interrupt context after RQ + * buffer processing to replenish the buffers in the RQ + */ +int fnic_alloc_rq_frame(struct vnic_rq *rq) +{ + struct fnic *fnic = vnic_dev_priv(rq->vdev); + struct sk_buff *skb; + u16 len; + dma_addr_t pa; + + len = FC_FRAME_HEADROOM + FC_MAX_FRAME + FC_FRAME_TAILROOM; + skb = dev_alloc_skb(len); + if (!skb) { + FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, + "Unable to allocate RQ sk_buff\n"); + return -ENOMEM; + } + skb_reset_mac_header(skb); + skb_reset_transport_header(skb); + skb_reset_network_header(skb); + skb_put(skb, len); + pa = pci_map_single(fnic->pdev, skb->data, len, PCI_DMA_FROMDEVICE); + fnic_queue_rq_desc(rq, skb, pa, len); + return 0; +} + +void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) +{ + struct fc_frame *fp = buf->os_buf; + struct fnic *fnic = vnic_dev_priv(rq->vdev); + + pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len, + PCI_DMA_FROMDEVICE); + + dev_kfree_skb(fp_skb(fp)); + buf->os_buf = NULL; +} + +static inline int is_flogi_frame(struct fc_frame_header *fh) +{ + return fh->fh_r_ctl == FC_RCTL_ELS_REQ && *(u8 *)(fh + 1) == ELS_FLOGI; +} + +int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp) +{ + struct vnic_wq *wq = &fnic->wq[0]; + struct sk_buff *skb; + dma_addr_t pa; + struct ethhdr *eth_hdr; + struct vlan_ethhdr *vlan_hdr; + struct fcoe_hdr *fcoe_hdr; + struct fc_frame_header *fh; + u32 tot_len, eth_hdr_len; + int ret = 0; + unsigned long flags; + + fh = fc_frame_header_get(fp); + skb = fp_skb(fp); + + if (!fnic->vlan_hw_insert) { + eth_hdr_len = sizeof(*vlan_hdr) + sizeof(*fcoe_hdr); + vlan_hdr = (struct vlan_ethhdr *)skb_push(skb, eth_hdr_len); + eth_hdr = (struct ethhdr *)vlan_hdr; + vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q); + vlan_hdr->h_vlan_encapsulated_proto = htons(ETH_P_FCOE); + vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id); + fcoe_hdr = (struct fcoe_hdr *)(vlan_hdr + 1); + } else { + eth_hdr_len = sizeof(*eth_hdr) + sizeof(*fcoe_hdr); + eth_hdr = (struct ethhdr *)skb_push(skb, eth_hdr_len); + eth_hdr->h_proto = htons(ETH_P_FCOE); + fcoe_hdr = (struct fcoe_hdr *)(eth_hdr + 1); + } + + if (is_flogi_frame(fh)) { + fc_fcoe_set_mac(eth_hdr->h_dest, fh->fh_d_id); + memcpy(eth_hdr->h_source, fnic->mac_addr, ETH_ALEN); + } else { + if (fnic->fcoui_mode) + fc_fcoe_set_mac(eth_hdr->h_dest, fh->fh_d_id); + else + memcpy(eth_hdr->h_dest, fnic->dest_addr, ETH_ALEN); + memcpy(eth_hdr->h_source, fnic->data_src_addr, ETH_ALEN); + } + + tot_len = skb->len; + BUG_ON(tot_len % 4); + + memset(fcoe_hdr, 0, sizeof(*fcoe_hdr)); + fcoe_hdr->fcoe_sof = fr_sof(fp); + if (FC_FCOE_VER) + FC_FCOE_ENCAPS_VER(fcoe_hdr, FC_FCOE_VER); + + pa = pci_map_single(fnic->pdev, eth_hdr, tot_len, PCI_DMA_TODEVICE); + + spin_lock_irqsave(&fnic->wq_lock[0], flags); + + if (!vnic_wq_desc_avail(wq)) { + pci_unmap_single(fnic->pdev, pa, + tot_len, PCI_DMA_TODEVICE); + ret = -1; + goto fnic_send_frame_end; + } + + fnic_queue_wq_desc(wq, skb, pa, tot_len, fr_eof(fp), + fnic->vlan_hw_insert, fnic->vlan_id, 1, 1, 1); +fnic_send_frame_end: + spin_unlock_irqrestore(&fnic->wq_lock[0], flags); + + if (ret) + dev_kfree_skb_any(fp_skb(fp)); + + return ret; +} + +/* + * fnic_send + * Routine to send a raw frame + */ +int fnic_send(struct fc_lport *lp, struct fc_frame *fp) +{ + struct fnic *fnic = lport_priv(lp); + struct fc_frame_header *fh; + int ret = 0; + enum fnic_state old_state; + unsigned long flags; + struct fc_frame *old_flogi = NULL; + struct fc_frame *old_flogi_resp = NULL; + + if (fnic->in_remove) { + dev_kfree_skb(fp_skb(fp)); + ret = -1; + goto fnic_send_end; + } + + fh = fc_frame_header_get(fp); + /* if not an Flogi frame, send it out, this is the common case */ + if (!is_flogi_frame(fh)) + return fnic_send_frame(fnic, fp); + + /* Flogi frame, now enter the state machine */ + + spin_lock_irqsave(&fnic->fnic_lock, flags); +again: + /* Get any old cached frames, free them after dropping lock */ + old_flogi = fnic->flogi; + fnic->flogi = NULL; + old_flogi_resp = fnic->flogi_resp; + fnic->flogi_resp = NULL; + + fnic->flogi_oxid = FC_XID_UNKNOWN; + + old_state = fnic->state; + switch (old_state) { + case FNIC_IN_FC_MODE: + case FNIC_IN_ETH_TRANS_FC_MODE: + default: + fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; + vnic_dev_del_addr(fnic->vdev, fnic->data_src_addr); + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + if (old_flogi) { + dev_kfree_skb(fp_skb(old_flogi)); + old_flogi = NULL; + } + if (old_flogi_resp) { + dev_kfree_skb(fp_skb(old_flogi_resp)); + old_flogi_resp = NULL; + } + + ret = fnic_fw_reset_handler(fnic); + + spin_lock_irqsave(&fnic->fnic_lock, flags); + if (fnic->state != FNIC_IN_FC_TRANS_ETH_MODE) + goto again; + if (ret) { + fnic->state = old_state; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + dev_kfree_skb(fp_skb(fp)); + goto fnic_send_end; + } + old_flogi = fnic->flogi; + fnic->flogi = fp; + fnic->flogi_oxid = ntohs(fh->fh_ox_id); + old_flogi_resp = fnic->flogi_resp; + fnic->flogi_resp = NULL; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + break; + + case FNIC_IN_FC_TRANS_ETH_MODE: + /* + * A reset is pending with the firmware. Store the flogi + * and its oxid. The transition out of this state happens + * only when Firmware completes the reset, either with + * success or failed. If success, transition to + * FNIC_IN_ETH_MODE, if fail, then transition to + * FNIC_IN_FC_MODE + */ + fnic->flogi = fp; + fnic->flogi_oxid = ntohs(fh->fh_ox_id); + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + break; + + case FNIC_IN_ETH_MODE: + /* + * The fw/hw is already in eth mode. Store the oxid, + * and send the flogi frame out. The transition out of this + * state happens only we receive flogi response from the + * network, and the oxid matches the cached oxid when the + * flogi frame was sent out. If they match, then we issue + * a flogi_reg request and transition to state + * FNIC_IN_ETH_TRANS_FC_MODE + */ + fnic->flogi_oxid = ntohs(fh->fh_ox_id); + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + ret = fnic_send_frame(fnic, fp); + break; + } + +fnic_send_end: + if (old_flogi) + dev_kfree_skb(fp_skb(old_flogi)); + if (old_flogi_resp) + dev_kfree_skb(fp_skb(old_flogi_resp)); + return ret; +} + +static void fnic_wq_complete_frame_send(struct vnic_wq *wq, + struct cq_desc *cq_desc, + struct vnic_wq_buf *buf, void *opaque) +{ + struct sk_buff *skb = buf->os_buf; + struct fc_frame *fp = (struct fc_frame *)skb; + struct fnic *fnic = vnic_dev_priv(wq->vdev); + + pci_unmap_single(fnic->pdev, buf->dma_addr, + buf->len, PCI_DMA_TODEVICE); + dev_kfree_skb_irq(fp_skb(fp)); + buf->os_buf = NULL; +} + +static int fnic_wq_cmpl_handler_cont(struct vnic_dev *vdev, + struct cq_desc *cq_desc, u8 type, + u16 q_number, u16 completed_index, + void *opaque) +{ + struct fnic *fnic = vnic_dev_priv(vdev); + unsigned long flags; + + spin_lock_irqsave(&fnic->wq_lock[q_number], flags); + vnic_wq_service(&fnic->wq[q_number], cq_desc, completed_index, + fnic_wq_complete_frame_send, NULL); + spin_unlock_irqrestore(&fnic->wq_lock[q_number], flags); + + return 0; +} + +int fnic_wq_cmpl_handler(struct fnic *fnic, int work_to_do) +{ + unsigned int wq_work_done = 0; + unsigned int i; + + for (i = 0; i < fnic->raw_wq_count; i++) { + wq_work_done += vnic_cq_service(&fnic->cq[fnic->rq_count+i], + work_to_do, + fnic_wq_cmpl_handler_cont, + NULL); + } + + return wq_work_done; +} + + +void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) +{ + struct fc_frame *fp = buf->os_buf; + struct fnic *fnic = vnic_dev_priv(wq->vdev); + + pci_unmap_single(fnic->pdev, buf->dma_addr, + buf->len, PCI_DMA_TODEVICE); + + dev_kfree_skb(fp_skb(fp)); + buf->os_buf = NULL; +} diff --git a/drivers/scsi/fnic/fnic_io.h b/drivers/scsi/fnic/fnic_io.h new file mode 100644 index 00000000000..f0b896988cd --- /dev/null +++ b/drivers/scsi/fnic/fnic_io.h @@ -0,0 +1,67 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _FNIC_IO_H_ +#define _FNIC_IO_H_ + +#include <scsi/fc/fc_fcp.h> + +#define FNIC_DFLT_SG_DESC_CNT 32 +#define FNIC_MAX_SG_DESC_CNT 1024 /* Maximum descriptors per sgl */ +#define FNIC_SG_DESC_ALIGN 16 /* Descriptor address alignment */ + +struct host_sg_desc { + __le64 addr; + __le32 len; + u32 _resvd; +}; + +struct fnic_dflt_sgl_list { + struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT]; +}; + +struct fnic_sgl_list { + struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT]; +}; + +enum fnic_sgl_list_type { + FNIC_SGL_CACHE_DFLT = 0, /* cache with default size sgl */ + FNIC_SGL_CACHE_MAX, /* cache with max size sgl */ + FNIC_SGL_NUM_CACHES /* number of sgl caches */ +}; + +enum fnic_ioreq_state { + FNIC_IOREQ_CMD_PENDING = 0, + FNIC_IOREQ_ABTS_PENDING, + FNIC_IOREQ_ABTS_COMPLETE, + FNIC_IOREQ_CMD_COMPLETE, +}; + +struct fnic_io_req { + struct host_sg_desc *sgl_list; /* sgl list */ + void *sgl_list_alloc; /* sgl list address used for free */ + dma_addr_t sense_buf_pa; /* dma address for sense buffer*/ + dma_addr_t sgl_list_pa; /* dma address for sgl list */ + u16 sgl_cnt; + u8 sgl_type; /* device DMA descriptor list type */ + u8 io_completed:1; /* set to 1 when fw completes IO */ + u32 port_id; /* remote port DID */ + struct completion *abts_done; /* completion for abts */ + struct completion *dr_done; /* completion for device reset */ +}; + +#endif /* _FNIC_IO_H_ */ diff --git a/drivers/scsi/fnic/fnic_isr.c b/drivers/scsi/fnic/fnic_isr.c new file mode 100644 index 00000000000..2b3064828ae --- /dev/null +++ b/drivers/scsi/fnic/fnic_isr.c @@ -0,0 +1,332 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <scsi/libfc.h> +#include <scsi/fc_frame.h> +#include "vnic_dev.h" +#include "vnic_intr.h" +#include "vnic_stats.h" +#include "fnic_io.h" +#include "fnic.h" + +static irqreturn_t fnic_isr_legacy(int irq, void *data) +{ + struct fnic *fnic = data; + u32 pba; + unsigned long work_done = 0; + + pba = vnic_intr_legacy_pba(fnic->legacy_pba); + if (!pba) + return IRQ_NONE; + + if (pba & (1 << FNIC_INTX_NOTIFY)) { + vnic_intr_return_all_credits(&fnic->intr[FNIC_INTX_NOTIFY]); + fnic_handle_link_event(fnic); + } + + if (pba & (1 << FNIC_INTX_ERR)) { + vnic_intr_return_all_credits(&fnic->intr[FNIC_INTX_ERR]); + fnic_log_q_error(fnic); + } + + if (pba & (1 << FNIC_INTX_WQ_RQ_COPYWQ)) { + work_done += fnic_wq_copy_cmpl_handler(fnic, 8); + work_done += fnic_wq_cmpl_handler(fnic, 4); + work_done += fnic_rq_cmpl_handler(fnic, 4); + + vnic_intr_return_credits(&fnic->intr[FNIC_INTX_WQ_RQ_COPYWQ], + work_done, + 1 /* unmask intr */, + 1 /* reset intr timer */); + } + + return IRQ_HANDLED; +} + +static irqreturn_t fnic_isr_msi(int irq, void *data) +{ + struct fnic *fnic = data; + unsigned long work_done = 0; + + work_done += fnic_wq_copy_cmpl_handler(fnic, 8); + work_done += fnic_wq_cmpl_handler(fnic, 4); + work_done += fnic_rq_cmpl_handler(fnic, 4); + + vnic_intr_return_credits(&fnic->intr[0], + work_done, + 1 /* unmask intr */, + 1 /* reset intr timer */); + + return IRQ_HANDLED; +} + +static irqreturn_t fnic_isr_msix_rq(int irq, void *data) +{ + struct fnic *fnic = data; + unsigned long rq_work_done = 0; + + rq_work_done = fnic_rq_cmpl_handler(fnic, 4); + vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_RQ], + rq_work_done, + 1 /* unmask intr */, + 1 /* reset intr timer */); + + return IRQ_HANDLED; +} + +static irqreturn_t fnic_isr_msix_wq(int irq, void *data) +{ + struct fnic *fnic = data; + unsigned long wq_work_done = 0; + + wq_work_done = fnic_wq_cmpl_handler(fnic, 4); + vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_WQ], + wq_work_done, + 1 /* unmask intr */, + 1 /* reset intr timer */); + return IRQ_HANDLED; +} + +static irqreturn_t fnic_isr_msix_wq_copy(int irq, void *data) +{ + struct fnic *fnic = data; + unsigned long wq_copy_work_done = 0; + + wq_copy_work_done = fnic_wq_copy_cmpl_handler(fnic, 8); + vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_WQ_COPY], + wq_copy_work_done, + 1 /* unmask intr */, + 1 /* reset intr timer */); + return IRQ_HANDLED; +} + +static irqreturn_t fnic_isr_msix_err_notify(int irq, void *data) +{ + struct fnic *fnic = data; + + vnic_intr_return_all_credits(&fnic->intr[FNIC_MSIX_ERR_NOTIFY]); + fnic_log_q_error(fnic); + fnic_handle_link_event(fnic); + + return IRQ_HANDLED; +} + +void fnic_free_intr(struct fnic *fnic) +{ + int i; + + switch (vnic_dev_get_intr_mode(fnic->vdev)) { + case VNIC_DEV_INTR_MODE_INTX: + case VNIC_DEV_INTR_MODE_MSI: + free_irq(fnic->pdev->irq, fnic); + break; + + case VNIC_DEV_INTR_MODE_MSIX: + for (i = 0; i < ARRAY_SIZE(fnic->msix); i++) + if (fnic->msix[i].requested) + free_irq(fnic->msix_entry[i].vector, + fnic->msix[i].devid); + break; + + default: + break; + } +} + +int fnic_request_intr(struct fnic *fnic) +{ + int err = 0; + int i; + + switch (vnic_dev_get_intr_mode(fnic->vdev)) { + + case VNIC_DEV_INTR_MODE_INTX: + err = request_irq(fnic->pdev->irq, &fnic_isr_legacy, + IRQF_SHARED, DRV_NAME, fnic); + break; + + case VNIC_DEV_INTR_MODE_MSI: + err = request_irq(fnic->pdev->irq, &fnic_isr_msi, + 0, fnic->name, fnic); + break; + + case VNIC_DEV_INTR_MODE_MSIX: + + sprintf(fnic->msix[FNIC_MSIX_RQ].devname, + "%.11s-fcs-rq", fnic->name); + fnic->msix[FNIC_MSIX_RQ].isr = fnic_isr_msix_rq; + fnic->msix[FNIC_MSIX_RQ].devid = fnic; + + sprintf(fnic->msix[FNIC_MSIX_WQ].devname, + "%.11s-fcs-wq", fnic->name); + fnic->msix[FNIC_MSIX_WQ].isr = fnic_isr_msix_wq; + fnic->msix[FNIC_MSIX_WQ].devid = fnic; + + sprintf(fnic->msix[FNIC_MSIX_WQ_COPY].devname, + "%.11s-scsi-wq", fnic->name); + fnic->msix[FNIC_MSIX_WQ_COPY].isr = fnic_isr_msix_wq_copy; + fnic->msix[FNIC_MSIX_WQ_COPY].devid = fnic; + + sprintf(fnic->msix[FNIC_MSIX_ERR_NOTIFY].devname, + "%.11s-err-notify", fnic->name); + fnic->msix[FNIC_MSIX_ERR_NOTIFY].isr = + fnic_isr_msix_err_notify; + fnic->msix[FNIC_MSIX_ERR_NOTIFY].devid = fnic; + + for (i = 0; i < ARRAY_SIZE(fnic->msix); i++) { + err = request_irq(fnic->msix_entry[i].vector, + fnic->msix[i].isr, 0, + fnic->msix[i].devname, + fnic->msix[i].devid); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "MSIX: request_irq" + " failed %d\n", err); + fnic_free_intr(fnic); + break; + } + fnic->msix[i].requested = 1; + } + break; + + default: + break; + } + + return err; +} + +int fnic_set_intr_mode(struct fnic *fnic) +{ + unsigned int n = ARRAY_SIZE(fnic->rq); + unsigned int m = ARRAY_SIZE(fnic->wq); + unsigned int o = ARRAY_SIZE(fnic->wq_copy); + unsigned int i; + + /* + * Set interrupt mode (INTx, MSI, MSI-X) depending + * system capabilities. + * + * Try MSI-X first + * + * We need n RQs, m WQs, o Copy WQs, n+m+o CQs, and n+m+o+1 INTRs + * (last INTR is used for WQ/RQ errors and notification area) + */ + + BUG_ON(ARRAY_SIZE(fnic->msix_entry) < n + m + o + 1); + for (i = 0; i < n + m + o + 1; i++) + fnic->msix_entry[i].entry = i; + + if (fnic->rq_count >= n && + fnic->raw_wq_count >= m && + fnic->wq_copy_count >= o && + fnic->cq_count >= n + m + o) { + if (!pci_enable_msix(fnic->pdev, fnic->msix_entry, + n + m + o + 1)) { + fnic->rq_count = n; + fnic->raw_wq_count = m; + fnic->wq_copy_count = o; + fnic->wq_count = m + o; + fnic->cq_count = n + m + o; + fnic->intr_count = n + m + o + 1; + fnic->err_intr_offset = FNIC_MSIX_ERR_NOTIFY; + + FNIC_ISR_DBG(KERN_DEBUG, fnic->lport->host, + "Using MSI-X Interrupts\n"); + vnic_dev_set_intr_mode(fnic->vdev, + VNIC_DEV_INTR_MODE_MSIX); + return 0; + } + } + + /* + * Next try MSI + * We need 1 RQ, 1 WQ, 1 WQ_COPY, 3 CQs, and 1 INTR + */ + if (fnic->rq_count >= 1 && + fnic->raw_wq_count >= 1 && + fnic->wq_copy_count >= 1 && + fnic->cq_count >= 3 && + fnic->intr_count >= 1 && + !pci_enable_msi(fnic->pdev)) { + + fnic->rq_count = 1; + fnic->raw_wq_count = 1; + fnic->wq_copy_count = 1; + fnic->wq_count = 2; + fnic->cq_count = 3; + fnic->intr_count = 1; + fnic->err_intr_offset = 0; + + FNIC_ISR_DBG(KERN_DEBUG, fnic->lport->host, + "Using MSI Interrupts\n"); + vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_MSI); + + return 0; + } + + /* + * Next try INTx + * We need 1 RQ, 1 WQ, 1 WQ_COPY, 3 CQs, and 3 INTRs + * 1 INTR is used for all 3 queues, 1 INTR for queue errors + * 1 INTR for notification area + */ + + if (fnic->rq_count >= 1 && + fnic->raw_wq_count >= 1 && + fnic->wq_copy_count >= 1 && + fnic->cq_count >= 3 && + fnic->intr_count >= 3) { + + fnic->rq_count = 1; + fnic->raw_wq_count = 1; + fnic->wq_copy_count = 1; + fnic->cq_count = 3; + fnic->intr_count = 3; + + FNIC_ISR_DBG(KERN_DEBUG, fnic->lport->host, + "Using Legacy Interrupts\n"); + vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_INTX); + + return 0; + } + + vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); + + return -EINVAL; +} + +void fnic_clear_intr_mode(struct fnic *fnic) +{ + switch (vnic_dev_get_intr_mode(fnic->vdev)) { + case VNIC_DEV_INTR_MODE_MSIX: + pci_disable_msix(fnic->pdev); + break; + case VNIC_DEV_INTR_MODE_MSI: + pci_disable_msi(fnic->pdev); + break; + default: + break; + } + + vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_INTX); +} + diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c new file mode 100644 index 00000000000..32ef6b87d89 --- /dev/null +++ b/drivers/scsi/fnic/fnic_main.c @@ -0,0 +1,942 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include <linux/module.h> +#include <linux/mempool.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/skbuff.h> +#include <linux/interrupt.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_transport.h> +#include <scsi/scsi_transport_fc.h> +#include <scsi/scsi_tcq.h> +#include <scsi/libfc.h> +#include <scsi/fc_frame.h> + +#include "vnic_dev.h" +#include "vnic_intr.h" +#include "vnic_stats.h" +#include "fnic_io.h" +#include "fnic.h" + +#define PCI_DEVICE_ID_CISCO_FNIC 0x0045 + +/* Timer to poll notification area for events. Used for MSI interrupts */ +#define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ) + +static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES]; +static struct kmem_cache *fnic_io_req_cache; +LIST_HEAD(fnic_list); +DEFINE_SPINLOCK(fnic_list_lock); + +/* Supported devices by fnic module */ +static struct pci_device_id fnic_id_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) }, + { 0, } +}; + +MODULE_DESCRIPTION(DRV_DESCRIPTION); +MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, " + "Joseph R. Eykholt <jeykholt@cisco.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_VERSION(DRV_VERSION); +MODULE_DEVICE_TABLE(pci, fnic_id_table); + +unsigned int fnic_log_level; +module_param(fnic_log_level, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels"); + + +static struct libfc_function_template fnic_transport_template = { + .frame_send = fnic_send, + .fcp_abort_io = fnic_empty_scsi_cleanup, + .fcp_cleanup = fnic_empty_scsi_cleanup, + .exch_mgr_reset = fnic_exch_mgr_reset +}; + +static int fnic_slave_alloc(struct scsi_device *sdev) +{ + struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); + struct fc_lport *lp = shost_priv(sdev->host); + struct fnic *fnic = lport_priv(lp); + + sdev->tagged_supported = 1; + + if (!rport || fc_remote_port_chkready(rport)) + return -ENXIO; + + scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH); + rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000; + + return 0; +} + +static struct scsi_host_template fnic_host_template = { + .module = THIS_MODULE, + .name = DRV_NAME, + .queuecommand = fnic_queuecommand, + .eh_abort_handler = fnic_abort_cmd, + .eh_device_reset_handler = fnic_device_reset, + .eh_host_reset_handler = fnic_host_reset, + .slave_alloc = fnic_slave_alloc, + .change_queue_depth = fc_change_queue_depth, + .change_queue_type = fc_change_queue_type, + .this_id = -1, + .cmd_per_lun = 3, + .can_queue = FNIC_MAX_IO_REQ, + .use_clustering = ENABLE_CLUSTERING, + .sg_tablesize = FNIC_MAX_SG_DESC_CNT, + .max_sectors = 0xffff, + .shost_attrs = fnic_attrs, +}; + +static void fnic_get_host_speed(struct Scsi_Host *shost); +static struct scsi_transport_template *fnic_fc_transport; +static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *); + +static struct fc_function_template fnic_fc_functions = { + + .show_host_node_name = 1, + .show_host_port_name = 1, + .show_host_supported_classes = 1, + .show_host_supported_fc4s = 1, + .show_host_active_fc4s = 1, + .show_host_maxframe_size = 1, + .show_host_port_id = 1, + .show_host_supported_speeds = 1, + .get_host_speed = fnic_get_host_speed, + .show_host_speed = 1, + .show_host_port_type = 1, + .get_host_port_state = fc_get_host_port_state, + .show_host_port_state = 1, + .show_host_symbolic_name = 1, + .show_rport_maxframe_size = 1, + .show_rport_supported_classes = 1, + .show_host_fabric_name = 1, + .show_starget_node_name = 1, + .show_starget_port_name = 1, + .show_starget_port_id = 1, + .show_rport_dev_loss_tmo = 1, + .issue_fc_host_lip = fnic_reset, + .get_fc_host_stats = fnic_get_stats, + .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), + .terminate_rport_io = fnic_terminate_rport_io, +}; + +static void fnic_get_host_speed(struct Scsi_Host *shost) +{ + struct fc_lport *lp = shost_priv(shost); + struct fnic *fnic = lport_priv(lp); + u32 port_speed = vnic_dev_port_speed(fnic->vdev); + + /* Add in other values as they get defined in fw */ + switch (port_speed) { + case 10000: + fc_host_speed(shost) = FC_PORTSPEED_10GBIT; + break; + default: + fc_host_speed(shost) = FC_PORTSPEED_10GBIT; + break; + } +} + +static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host) +{ + int ret; + struct fc_lport *lp = shost_priv(host); + struct fnic *fnic = lport_priv(lp); + struct fc_host_statistics *stats = &lp->host_stats; + struct vnic_stats *vs; + unsigned long flags; + + if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT)) + return stats; + fnic->stats_time = jiffies; + + spin_lock_irqsave(&fnic->fnic_lock, flags); + ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + if (ret) { + FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, + "fnic: Get vnic stats failed" + " 0x%x", ret); + return stats; + } + vs = fnic->stats; + stats->tx_frames = vs->tx.tx_unicast_frames_ok; + stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4; + stats->rx_frames = vs->rx.rx_unicast_frames_ok; + stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4; + stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors; + stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop; + stats->invalid_crc_count = vs->rx.rx_crc_errors; + stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ; + stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000); + stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000); + + return stats; +} + +void fnic_log_q_error(struct fnic *fnic) +{ + unsigned int i; + u32 error_status; + + for (i = 0; i < fnic->raw_wq_count; i++) { + error_status = ioread32(&fnic->wq[i].ctrl->error_status); + if (error_status) + shost_printk(KERN_ERR, fnic->lport->host, + "WQ[%d] error_status" + " %d\n", i, error_status); + } + + for (i = 0; i < fnic->rq_count; i++) { + error_status = ioread32(&fnic->rq[i].ctrl->error_status); + if (error_status) + shost_printk(KERN_ERR, fnic->lport->host, + "RQ[%d] error_status" + " %d\n", i, error_status); + } + + for (i = 0; i < fnic->wq_copy_count; i++) { + error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status); + if (error_status) + shost_printk(KERN_ERR, fnic->lport->host, + "CWQ[%d] error_status" + " %d\n", i, error_status); + } +} + +void fnic_handle_link_event(struct fnic *fnic) +{ + unsigned long flags; + + spin_lock_irqsave(&fnic->fnic_lock, flags); + if (fnic->stop_rx_link_events) { + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + return; + } + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + queue_work(fnic_event_queue, &fnic->link_work); + +} + +static int fnic_notify_set(struct fnic *fnic) +{ + int err; + + switch (vnic_dev_get_intr_mode(fnic->vdev)) { + case VNIC_DEV_INTR_MODE_INTX: + err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY); + break; + case VNIC_DEV_INTR_MODE_MSI: + err = vnic_dev_notify_set(fnic->vdev, -1); + break; + case VNIC_DEV_INTR_MODE_MSIX: + err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY); + break; + default: + shost_printk(KERN_ERR, fnic->lport->host, + "Interrupt mode should be set up" + " before devcmd notify set %d\n", + vnic_dev_get_intr_mode(fnic->vdev)); + err = -1; + break; + } + + return err; +} + +static void fnic_notify_timer(unsigned long data) +{ + struct fnic *fnic = (struct fnic *)data; + + fnic_handle_link_event(fnic); + mod_timer(&fnic->notify_timer, + round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD)); +} + +static void fnic_notify_timer_start(struct fnic *fnic) +{ + switch (vnic_dev_get_intr_mode(fnic->vdev)) { + case VNIC_DEV_INTR_MODE_MSI: + /* + * Schedule first timeout immediately. The driver is + * initiatialized and ready to look for link up notification + */ + mod_timer(&fnic->notify_timer, jiffies); + break; + default: + /* Using intr for notification for INTx/MSI-X */ + break; + }; +} + +static int fnic_dev_wait(struct vnic_dev *vdev, + int (*start)(struct vnic_dev *, int), + int (*finished)(struct vnic_dev *, int *), + int arg) +{ + unsigned long time; + int done; + int err; + + err = start(vdev, arg); + if (err) + return err; + + /* Wait for func to complete...2 seconds max */ + time = jiffies + (HZ * 2); + do { + err = finished(vdev, &done); + if (err) + return err; + if (done) + return 0; + schedule_timeout_uninterruptible(HZ / 10); + } while (time_after(time, jiffies)); + + return -ETIMEDOUT; +} + +static int fnic_cleanup(struct fnic *fnic) +{ + unsigned int i; + int err; + unsigned long flags; + struct fc_frame *flogi = NULL; + struct fc_frame *flogi_resp = NULL; + + vnic_dev_disable(fnic->vdev); + for (i = 0; i < fnic->intr_count; i++) + vnic_intr_mask(&fnic->intr[i]); + + for (i = 0; i < fnic->rq_count; i++) { + err = vnic_rq_disable(&fnic->rq[i]); + if (err) + return err; + } + for (i = 0; i < fnic->raw_wq_count; i++) { + err = vnic_wq_disable(&fnic->wq[i]); + if (err) + return err; + } + for (i = 0; i < fnic->wq_copy_count; i++) { + err = vnic_wq_copy_disable(&fnic->wq_copy[i]); + if (err) + return err; + } + + /* Clean up completed IOs and FCS frames */ + fnic_wq_copy_cmpl_handler(fnic, -1); + fnic_wq_cmpl_handler(fnic, -1); + fnic_rq_cmpl_handler(fnic, -1); + + /* Clean up the IOs and FCS frames that have not completed */ + for (i = 0; i < fnic->raw_wq_count; i++) + vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf); + for (i = 0; i < fnic->rq_count; i++) + vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); + for (i = 0; i < fnic->wq_copy_count; i++) + vnic_wq_copy_clean(&fnic->wq_copy[i], + fnic_wq_copy_cleanup_handler); + + for (i = 0; i < fnic->cq_count; i++) + vnic_cq_clean(&fnic->cq[i]); + for (i = 0; i < fnic->intr_count; i++) + vnic_intr_clean(&fnic->intr[i]); + + /* + * Remove cached flogi and flogi resp frames if any + * These frames are not in any queue, and therefore queue + * cleanup does not clean them. So clean them explicitly + */ + spin_lock_irqsave(&fnic->fnic_lock, flags); + flogi = fnic->flogi; + fnic->flogi = NULL; + flogi_resp = fnic->flogi_resp; + fnic->flogi_resp = NULL; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + if (flogi) + dev_kfree_skb(fp_skb(flogi)); + + if (flogi_resp) + dev_kfree_skb(fp_skb(flogi_resp)); + + mempool_destroy(fnic->io_req_pool); + for (i = 0; i < FNIC_SGL_NUM_CACHES; i++) + mempool_destroy(fnic->io_sgl_pool[i]); + + return 0; +} + +static void fnic_iounmap(struct fnic *fnic) +{ + if (fnic->bar0.vaddr) + iounmap(fnic->bar0.vaddr); +} + +/* + * Allocate element for mempools requiring GFP_DMA flag. + * Otherwise, checks in kmem_flagcheck() hit BUG_ON(). + */ +static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data) +{ + struct kmem_cache *mem = pool_data; + + return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA); +} + +static int __devinit fnic_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct Scsi_Host *host; + struct fc_lport *lp; + struct fnic *fnic; + mempool_t *pool; + int err; + int i; + unsigned long flags; + + /* + * Allocate SCSI Host and set up association between host, + * local port, and fnic + */ + host = scsi_host_alloc(&fnic_host_template, + sizeof(struct fc_lport) + sizeof(struct fnic)); + if (!host) { + printk(KERN_ERR PFX "Unable to alloc SCSI host\n"); + err = -ENOMEM; + goto err_out; + } + lp = shost_priv(host); + lp->host = host; + fnic = lport_priv(lp); + fnic->lport = lp; + + snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, + host->host_no); + + host->transportt = fnic_fc_transport; + + err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Unable to alloc shared tag map\n"); + goto err_out_free_hba; + } + + /* Setup PCI resources */ + pci_set_drvdata(pdev, fnic); + + fnic->pdev = pdev; + + err = pci_enable_device(pdev); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Cannot enable PCI device, aborting.\n"); + goto err_out_free_hba; + } + + err = pci_request_regions(pdev, DRV_NAME); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Cannot enable PCI resources, aborting\n"); + goto err_out_disable_device; + } + + pci_set_master(pdev); + + /* Query PCI controller on system for DMA addressing + * limitation for the device. Try 40-bit first, and + * fail to 32-bit. + */ + err = pci_set_dma_mask(pdev, DMA_40BIT_MASK); + if (err) { + err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "No usable DMA configuration " + "aborting\n"); + goto err_out_release_regions; + } + err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Unable to obtain 32-bit DMA " + "for consistent allocations, aborting.\n"); + goto err_out_release_regions; + } + } else { + err = pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Unable to obtain 40-bit DMA " + "for consistent allocations, aborting.\n"); + goto err_out_release_regions; + } + } + + /* Map vNIC resources from BAR0 */ + if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { + shost_printk(KERN_ERR, fnic->lport->host, + "BAR0 not memory-map'able, aborting.\n"); + err = -ENODEV; + goto err_out_release_regions; + } + + fnic->bar0.vaddr = pci_iomap(pdev, 0, 0); + fnic->bar0.bus_addr = pci_resource_start(pdev, 0); + fnic->bar0.len = pci_resource_len(pdev, 0); + + if (!fnic->bar0.vaddr) { + shost_printk(KERN_ERR, fnic->lport->host, + "Cannot memory-map BAR0 res hdr, " + "aborting.\n"); + err = -ENODEV; + goto err_out_release_regions; + } + + fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0); + if (!fnic->vdev) { + shost_printk(KERN_ERR, fnic->lport->host, + "vNIC registration failed, " + "aborting.\n"); + err = -ENODEV; + goto err_out_iounmap; + } + + err = fnic_dev_wait(fnic->vdev, vnic_dev_open, + vnic_dev_open_done, 0); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "vNIC dev open failed, aborting.\n"); + goto err_out_vnic_unregister; + } + + err = vnic_dev_init(fnic->vdev, 0); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "vNIC dev init failed, aborting.\n"); + goto err_out_dev_close; + } + + err = vnic_dev_mac_addr(fnic->vdev, fnic->mac_addr); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "vNIC get MAC addr failed \n"); + goto err_out_dev_close; + } + + /* Get vNIC configuration */ + err = fnic_get_vnic_config(fnic); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Get vNIC configuration failed, " + "aborting.\n"); + goto err_out_dev_close; + } + host->max_lun = fnic->config.luns_per_tgt; + host->max_id = FNIC_MAX_FCP_TARGET; + + fnic_get_res_counts(fnic); + + err = fnic_set_intr_mode(fnic); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Failed to set intr mode, " + "aborting.\n"); + goto err_out_dev_close; + } + + err = fnic_request_intr(fnic); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Unable to request irq.\n"); + goto err_out_clear_intr; + } + + err = fnic_alloc_vnic_resources(fnic); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Failed to alloc vNIC resources, " + "aborting.\n"); + goto err_out_free_intr; + } + + + /* initialize all fnic locks */ + spin_lock_init(&fnic->fnic_lock); + + for (i = 0; i < FNIC_WQ_MAX; i++) + spin_lock_init(&fnic->wq_lock[i]); + + for (i = 0; i < FNIC_WQ_COPY_MAX; i++) { + spin_lock_init(&fnic->wq_copy_lock[i]); + fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK; + fnic->fw_ack_recd[i] = 0; + fnic->fw_ack_index[i] = -1; + } + + for (i = 0; i < FNIC_IO_LOCKS; i++) + spin_lock_init(&fnic->io_req_lock[i]); + + fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache); + if (!fnic->io_req_pool) + goto err_out_free_resources; + + pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab, + fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); + if (!pool) + goto err_out_free_ioreq_pool; + fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; + + pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab, + fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); + if (!pool) + goto err_out_free_dflt_pool; + fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool; + + /* setup vlan config, hw inserts vlan header */ + fnic->vlan_hw_insert = 1; + fnic->vlan_id = 0; + + fnic->flogi_oxid = FC_XID_UNKNOWN; + fnic->flogi = NULL; + fnic->flogi_resp = NULL; + fnic->state = FNIC_IN_FC_MODE; + + /* Enable hardware stripping of vlan header on ingress */ + fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1); + + /* Setup notification buffer area */ + err = fnic_notify_set(fnic); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "Failed to alloc notify buffer, aborting.\n"); + goto err_out_free_max_pool; + } + + /* Setup notify timer when using MSI interrupts */ + if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) + setup_timer(&fnic->notify_timer, + fnic_notify_timer, (unsigned long)fnic); + + /* allocate RQ buffers and post them to RQ*/ + for (i = 0; i < fnic->rq_count; i++) { + err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "fnic_alloc_rq_frame can't alloc " + "frame\n"); + goto err_out_free_rq_buf; + } + } + + /* + * Initialization done with PCI system, hardware, firmware. + * Add host to SCSI + */ + err = scsi_add_host(lp->host, &pdev->dev); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "fnic: scsi_add_host failed...exiting\n"); + goto err_out_free_rq_buf; + } + + /* Start local port initiatialization */ + + lp->link_up = 0; + lp->tt = fnic_transport_template; + + lp->emp = fc_exch_mgr_alloc(lp, FC_CLASS_3, + FCPIO_HOST_EXCH_RANGE_START, + FCPIO_HOST_EXCH_RANGE_END); + if (!lp->emp) { + err = -ENOMEM; + goto err_out_remove_scsi_host; + } + + lp->max_retry_count = fnic->config.flogi_retries; + lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | + FCP_SPPF_CONF_COMPL); + if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) + lp->service_params |= FCP_SPPF_RETRY; + + lp->boot_time = jiffies; + lp->e_d_tov = fnic->config.ed_tov; + lp->r_a_tov = fnic->config.ra_tov; + lp->link_supported_speeds = FC_PORTSPEED_10GBIT; + fc_set_wwnn(lp, fnic->config.node_wwn); + fc_set_wwpn(lp, fnic->config.port_wwn); + + fc_exch_init(lp); + fc_lport_init(lp); + fc_elsct_init(lp); + fc_rport_init(lp); + fc_disc_init(lp); + + fc_lport_config(lp); + + if (fc_set_mfs(lp, fnic->config.maxdatafieldsize + + sizeof(struct fc_frame_header))) { + err = -EINVAL; + goto err_out_free_exch_mgr; + } + fc_host_maxframe_size(lp->host) = lp->mfs; + + sprintf(fc_host_symbolic_name(lp->host), + DRV_NAME " v" DRV_VERSION " over %s", fnic->name); + + spin_lock_irqsave(&fnic_list_lock, flags); + list_add_tail(&fnic->list, &fnic_list); + spin_unlock_irqrestore(&fnic_list_lock, flags); + + INIT_WORK(&fnic->link_work, fnic_handle_link); + INIT_WORK(&fnic->frame_work, fnic_handle_frame); + skb_queue_head_init(&fnic->frame_queue); + + /* Enable all queues */ + for (i = 0; i < fnic->raw_wq_count; i++) + vnic_wq_enable(&fnic->wq[i]); + for (i = 0; i < fnic->rq_count; i++) + vnic_rq_enable(&fnic->rq[i]); + for (i = 0; i < fnic->wq_copy_count; i++) + vnic_wq_copy_enable(&fnic->wq_copy[i]); + + fc_fabric_login(lp); + + vnic_dev_enable(fnic->vdev); + for (i = 0; i < fnic->intr_count; i++) + vnic_intr_unmask(&fnic->intr[i]); + + fnic_notify_timer_start(fnic); + + return 0; + +err_out_free_exch_mgr: + fc_exch_mgr_free(lp->emp); +err_out_remove_scsi_host: + fc_remove_host(fnic->lport->host); + scsi_remove_host(fnic->lport->host); +err_out_free_rq_buf: + for (i = 0; i < fnic->rq_count; i++) + vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); + vnic_dev_notify_unset(fnic->vdev); +err_out_free_max_pool: + mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); +err_out_free_dflt_pool: + mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]); +err_out_free_ioreq_pool: + mempool_destroy(fnic->io_req_pool); +err_out_free_resources: + fnic_free_vnic_resources(fnic); +err_out_free_intr: + fnic_free_intr(fnic); +err_out_clear_intr: + fnic_clear_intr_mode(fnic); +err_out_dev_close: + vnic_dev_close(fnic->vdev); +err_out_vnic_unregister: + vnic_dev_unregister(fnic->vdev); +err_out_iounmap: + fnic_iounmap(fnic); +err_out_release_regions: + pci_release_regions(pdev); +err_out_disable_device: + pci_disable_device(pdev); +err_out_free_hba: + scsi_host_put(lp->host); +err_out: + return err; +} + +static void __devexit fnic_remove(struct pci_dev *pdev) +{ + struct fnic *fnic = pci_get_drvdata(pdev); + unsigned long flags; + + /* + * Mark state so that the workqueue thread stops forwarding + * received frames and link events to the local port. ISR and + * other threads that can queue work items will also stop + * creating work items on the fnic workqueue + */ + spin_lock_irqsave(&fnic->fnic_lock, flags); + fnic->stop_rx_link_events = 1; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) + del_timer_sync(&fnic->notify_timer); + + /* + * Flush the fnic event queue. After this call, there should + * be no event queued for this fnic device in the workqueue + */ + flush_workqueue(fnic_event_queue); + skb_queue_purge(&fnic->frame_queue); + + /* + * Log off the fabric. This stops all remote ports, dns port, + * logs off the fabric. This flushes all rport, disc, lport work + * before returning + */ + fc_fabric_logoff(fnic->lport); + + spin_lock_irqsave(&fnic->fnic_lock, flags); + fnic->in_remove = 1; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + fc_lport_destroy(fnic->lport); + + /* + * This stops the fnic device, masks all interrupts. Completed + * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are + * cleaned up + */ + fnic_cleanup(fnic); + + BUG_ON(!skb_queue_empty(&fnic->frame_queue)); + + spin_lock_irqsave(&fnic_list_lock, flags); + list_del(&fnic->list); + spin_unlock_irqrestore(&fnic_list_lock, flags); + + fc_remove_host(fnic->lport->host); + scsi_remove_host(fnic->lport->host); + fc_exch_mgr_free(fnic->lport->emp); + vnic_dev_notify_unset(fnic->vdev); + fnic_free_vnic_resources(fnic); + fnic_free_intr(fnic); + fnic_clear_intr_mode(fnic); + vnic_dev_close(fnic->vdev); + vnic_dev_unregister(fnic->vdev); + fnic_iounmap(fnic); + pci_release_regions(pdev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + scsi_host_put(fnic->lport->host); +} + +static struct pci_driver fnic_driver = { + .name = DRV_NAME, + .id_table = fnic_id_table, + .probe = fnic_probe, + .remove = __devexit_p(fnic_remove), +}; + +static int __init fnic_init_module(void) +{ + size_t len; + int err = 0; + + printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); + + /* Create a cache for allocation of default size sgls */ + len = sizeof(struct fnic_dflt_sgl_list); + fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create + ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, + SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA, + NULL); + if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) { + printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n"); + err = -ENOMEM; + goto err_create_fnic_sgl_slab_dflt; + } + + /* Create a cache for allocation of max size sgls*/ + len = sizeof(struct fnic_sgl_list); + fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create + ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, + SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA, + NULL); + if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) { + printk(KERN_ERR PFX "failed to create fnic max sgl slab\n"); + err = -ENOMEM; + goto err_create_fnic_sgl_slab_max; + } + + /* Create a cache of io_req structs for use via mempool */ + fnic_io_req_cache = kmem_cache_create("fnic_io_req", + sizeof(struct fnic_io_req), + 0, SLAB_HWCACHE_ALIGN, NULL); + if (!fnic_io_req_cache) { + printk(KERN_ERR PFX "failed to create fnic io_req slab\n"); + err = -ENOMEM; + goto err_create_fnic_ioreq_slab; + } + + fnic_event_queue = create_singlethread_workqueue("fnic_event_wq"); + if (!fnic_event_queue) { + printk(KERN_ERR PFX "fnic work queue create failed\n"); + err = -ENOMEM; + goto err_create_fnic_workq; + } + + spin_lock_init(&fnic_list_lock); + INIT_LIST_HEAD(&fnic_list); + + fnic_fc_transport = fc_attach_transport(&fnic_fc_functions); + if (!fnic_fc_transport) { + printk(KERN_ERR PFX "fc_attach_transport error\n"); + err = -ENOMEM; + goto err_fc_transport; + } + + /* register the driver with PCI system */ + err = pci_register_driver(&fnic_driver); + if (err < 0) { + printk(KERN_ERR PFX "pci register error\n"); + goto err_pci_register; + } + return err; + +err_pci_register: + fc_release_transport(fnic_fc_transport); +err_fc_transport: + destroy_workqueue(fnic_event_queue); +err_create_fnic_workq: + kmem_cache_destroy(fnic_io_req_cache); +err_create_fnic_ioreq_slab: + kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); +err_create_fnic_sgl_slab_max: + kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); +err_create_fnic_sgl_slab_dflt: + return err; +} + +static void __exit fnic_cleanup_module(void) +{ + pci_unregister_driver(&fnic_driver); + destroy_workqueue(fnic_event_queue); + kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); + kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); + kmem_cache_destroy(fnic_io_req_cache); + fc_release_transport(fnic_fc_transport); +} + +module_init(fnic_init_module); +module_exit(fnic_cleanup_module); + diff --git a/drivers/scsi/fnic/fnic_res.c b/drivers/scsi/fnic/fnic_res.c new file mode 100644 index 00000000000..7ba61ec715d --- /dev/null +++ b/drivers/scsi/fnic/fnic_res.c @@ -0,0 +1,444 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/pci.h> +#include "wq_enet_desc.h" +#include "rq_enet_desc.h" +#include "cq_enet_desc.h" +#include "vnic_resource.h" +#include "vnic_dev.h" +#include "vnic_wq.h" +#include "vnic_rq.h" +#include "vnic_cq.h" +#include "vnic_intr.h" +#include "vnic_stats.h" +#include "vnic_nic.h" +#include "fnic.h" + +int fnic_get_vnic_config(struct fnic *fnic) +{ + struct vnic_fc_config *c = &fnic->config; + int err; + +#define GET_CONFIG(m) \ + do { \ + err = vnic_dev_spec(fnic->vdev, \ + offsetof(struct vnic_fc_config, m), \ + sizeof(c->m), &c->m); \ + if (err) { \ + shost_printk(KERN_ERR, fnic->lport->host, \ + "Error getting %s, %d\n", #m, \ + err); \ + return err; \ + } \ + } while (0); + + GET_CONFIG(node_wwn); + GET_CONFIG(port_wwn); + GET_CONFIG(wq_enet_desc_count); + GET_CONFIG(wq_copy_desc_count); + GET_CONFIG(rq_desc_count); + GET_CONFIG(maxdatafieldsize); + GET_CONFIG(ed_tov); + GET_CONFIG(ra_tov); + GET_CONFIG(intr_timer); + GET_CONFIG(intr_timer_type); + GET_CONFIG(flags); + GET_CONFIG(flogi_retries); + GET_CONFIG(flogi_timeout); + GET_CONFIG(plogi_retries); + GET_CONFIG(plogi_timeout); + GET_CONFIG(io_throttle_count); + GET_CONFIG(link_down_timeout); + GET_CONFIG(port_down_timeout); + GET_CONFIG(port_down_io_retries); + GET_CONFIG(luns_per_tgt); + + c->wq_enet_desc_count = + min_t(u32, VNIC_FNIC_WQ_DESCS_MAX, + max_t(u32, VNIC_FNIC_WQ_DESCS_MIN, + c->wq_enet_desc_count)); + c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16); + + c->wq_copy_desc_count = + min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX, + max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN, + c->wq_copy_desc_count)); + c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16); + + c->rq_desc_count = + min_t(u32, VNIC_FNIC_RQ_DESCS_MAX, + max_t(u32, VNIC_FNIC_RQ_DESCS_MIN, + c->rq_desc_count)); + c->rq_desc_count = ALIGN(c->rq_desc_count, 16); + + c->maxdatafieldsize = + min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX, + max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN, + c->maxdatafieldsize)); + c->ed_tov = + min_t(u32, VNIC_FNIC_EDTOV_MAX, + max_t(u32, VNIC_FNIC_EDTOV_MIN, + c->ed_tov)); + + c->ra_tov = + min_t(u32, VNIC_FNIC_RATOV_MAX, + max_t(u32, VNIC_FNIC_RATOV_MIN, + c->ra_tov)); + + c->flogi_retries = + min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries); + + c->flogi_timeout = + min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX, + max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN, + c->flogi_timeout)); + + c->plogi_retries = + min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries); + + c->plogi_timeout = + min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX, + max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN, + c->plogi_timeout)); + + c->io_throttle_count = + min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX, + max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN, + c->io_throttle_count)); + + c->link_down_timeout = + min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX, + c->link_down_timeout); + + c->port_down_timeout = + min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX, + c->port_down_timeout); + + c->port_down_io_retries = + min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX, + c->port_down_io_retries); + + c->luns_per_tgt = + min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX, + max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN, + c->luns_per_tgt)); + + c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer); + c->intr_timer_type = c->intr_timer_type; + + shost_printk(KERN_INFO, fnic->lport->host, + "vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x " + "wq/wq_copy/rq %d/%d/%d\n", + fnic->mac_addr[0], fnic->mac_addr[1], fnic->mac_addr[2], + fnic->mac_addr[3], fnic->mac_addr[4], fnic->mac_addr[5], + c->wq_enet_desc_count, c->wq_copy_desc_count, + c->rq_desc_count); + shost_printk(KERN_INFO, fnic->lport->host, + "vNIC node wwn %llx port wwn %llx\n", + c->node_wwn, c->port_wwn); + shost_printk(KERN_INFO, fnic->lport->host, + "vNIC ed_tov %d ra_tov %d\n", + c->ed_tov, c->ra_tov); + shost_printk(KERN_INFO, fnic->lport->host, + "vNIC mtu %d intr timer %d\n", + c->maxdatafieldsize, c->intr_timer); + shost_printk(KERN_INFO, fnic->lport->host, + "vNIC flags 0x%x luns per tgt %d\n", + c->flags, c->luns_per_tgt); + shost_printk(KERN_INFO, fnic->lport->host, + "vNIC flogi_retries %d flogi timeout %d\n", + c->flogi_retries, c->flogi_timeout); + shost_printk(KERN_INFO, fnic->lport->host, + "vNIC plogi retries %d plogi timeout %d\n", + c->plogi_retries, c->plogi_timeout); + shost_printk(KERN_INFO, fnic->lport->host, + "vNIC io throttle count %d link dn timeout %d\n", + c->io_throttle_count, c->link_down_timeout); + shost_printk(KERN_INFO, fnic->lport->host, + "vNIC port dn io retries %d port dn timeout %d\n", + c->port_down_io_retries, c->port_down_timeout); + + return 0; +} + +int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu, + u8 rss_hash_type, + u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, + u8 tso_ipid_split_en, u8 ig_vlan_strip_en) +{ + u64 a0, a1; + u32 nic_cfg; + int wait = 1000; + + vnic_set_nic_cfg(&nic_cfg, rss_default_cpu, + rss_hash_type, rss_hash_bits, rss_base_cpu, + rss_enable, tso_ipid_split_en, ig_vlan_strip_en); + + a0 = nic_cfg; + a1 = 0; + + return vnic_dev_cmd(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait); +} + +void fnic_get_res_counts(struct fnic *fnic) +{ + fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ); + fnic->raw_wq_count = fnic->wq_count - 1; + fnic->wq_copy_count = fnic->wq_count - fnic->raw_wq_count; + fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ); + fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ); + fnic->intr_count = vnic_dev_get_res_count(fnic->vdev, + RES_TYPE_INTR_CTRL); +} + +void fnic_free_vnic_resources(struct fnic *fnic) +{ + unsigned int i; + + for (i = 0; i < fnic->raw_wq_count; i++) + vnic_wq_free(&fnic->wq[i]); + + for (i = 0; i < fnic->wq_copy_count; i++) + vnic_wq_copy_free(&fnic->wq_copy[i]); + + for (i = 0; i < fnic->rq_count; i++) + vnic_rq_free(&fnic->rq[i]); + + for (i = 0; i < fnic->cq_count; i++) + vnic_cq_free(&fnic->cq[i]); + + for (i = 0; i < fnic->intr_count; i++) + vnic_intr_free(&fnic->intr[i]); +} + +int fnic_alloc_vnic_resources(struct fnic *fnic) +{ + enum vnic_dev_intr_mode intr_mode; + unsigned int mask_on_assertion; + unsigned int interrupt_offset; + unsigned int error_interrupt_enable; + unsigned int error_interrupt_offset; + unsigned int i, cq_index; + unsigned int wq_copy_cq_desc_count; + int err; + + intr_mode = vnic_dev_get_intr_mode(fnic->vdev); + + shost_printk(KERN_INFO, fnic->lport->host, "vNIC interrupt mode: %s\n", + intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" : + intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" : + intr_mode == VNIC_DEV_INTR_MODE_MSIX ? + "MSI-X" : "unknown"); + + shost_printk(KERN_INFO, fnic->lport->host, "vNIC resources avail: " + "wq %d cp_wq %d raw_wq %d rq %d cq %d intr %d\n", + fnic->wq_count, fnic->wq_copy_count, fnic->raw_wq_count, + fnic->rq_count, fnic->cq_count, fnic->intr_count); + + /* Allocate Raw WQ used for FCS frames */ + for (i = 0; i < fnic->raw_wq_count; i++) { + err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i, + fnic->config.wq_enet_desc_count, + sizeof(struct wq_enet_desc)); + if (err) + goto err_out_cleanup; + } + + /* Allocate Copy WQs used for SCSI IOs */ + for (i = 0; i < fnic->wq_copy_count; i++) { + err = vnic_wq_copy_alloc(fnic->vdev, &fnic->wq_copy[i], + (fnic->raw_wq_count + i), + fnic->config.wq_copy_desc_count, + sizeof(struct fcpio_host_req)); + if (err) + goto err_out_cleanup; + } + + /* RQ for receiving FCS frames */ + for (i = 0; i < fnic->rq_count; i++) { + err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i, + fnic->config.rq_desc_count, + sizeof(struct rq_enet_desc)); + if (err) + goto err_out_cleanup; + } + + /* CQ for each RQ */ + for (i = 0; i < fnic->rq_count; i++) { + cq_index = i; + err = vnic_cq_alloc(fnic->vdev, + &fnic->cq[cq_index], cq_index, + fnic->config.rq_desc_count, + sizeof(struct cq_enet_rq_desc)); + if (err) + goto err_out_cleanup; + } + + /* CQ for each WQ */ + for (i = 0; i < fnic->raw_wq_count; i++) { + cq_index = fnic->rq_count + i; + err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index, + fnic->config.wq_enet_desc_count, + sizeof(struct cq_enet_wq_desc)); + if (err) + goto err_out_cleanup; + } + + /* CQ for each COPY WQ */ + wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3); + for (i = 0; i < fnic->wq_copy_count; i++) { + cq_index = fnic->raw_wq_count + fnic->rq_count + i; + err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], + cq_index, + wq_copy_cq_desc_count, + sizeof(struct fcpio_fw_req)); + if (err) + goto err_out_cleanup; + } + + for (i = 0; i < fnic->intr_count; i++) { + err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i); + if (err) + goto err_out_cleanup; + } + + fnic->legacy_pba = vnic_dev_get_res(fnic->vdev, + RES_TYPE_INTR_PBA_LEGACY, 0); + + if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) { + shost_printk(KERN_ERR, fnic->lport->host, + "Failed to hook legacy pba resource\n"); + err = -ENODEV; + goto err_out_cleanup; + } + + /* + * Init RQ/WQ resources. + * + * RQ[0 to n-1] point to CQ[0 to n-1] + * WQ[0 to m-1] point to CQ[n to n+m-1] + * WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1] + * + * Note for copy wq we always initialize with cq_index = 0 + * + * Error interrupt is not enabled for MSI. + */ + + switch (intr_mode) { + case VNIC_DEV_INTR_MODE_INTX: + case VNIC_DEV_INTR_MODE_MSIX: + error_interrupt_enable = 1; + error_interrupt_offset = fnic->err_intr_offset; + break; + default: + error_interrupt_enable = 0; + error_interrupt_offset = 0; + break; + } + + for (i = 0; i < fnic->rq_count; i++) { + cq_index = i; + vnic_rq_init(&fnic->rq[i], + cq_index, + error_interrupt_enable, + error_interrupt_offset); + } + + for (i = 0; i < fnic->raw_wq_count; i++) { + cq_index = i + fnic->rq_count; + vnic_wq_init(&fnic->wq[i], + cq_index, + error_interrupt_enable, + error_interrupt_offset); + } + + for (i = 0; i < fnic->wq_copy_count; i++) { + vnic_wq_copy_init(&fnic->wq_copy[i], + 0 /* cq_index 0 - always */, + error_interrupt_enable, + error_interrupt_offset); + } + + for (i = 0; i < fnic->cq_count; i++) { + + switch (intr_mode) { + case VNIC_DEV_INTR_MODE_MSIX: + interrupt_offset = i; + break; + default: + interrupt_offset = 0; + break; + } + + vnic_cq_init(&fnic->cq[i], + 0 /* flow_control_enable */, + 1 /* color_enable */, + 0 /* cq_head */, + 0 /* cq_tail */, + 1 /* cq_tail_color */, + 1 /* interrupt_enable */, + 1 /* cq_entry_enable */, + 0 /* cq_message_enable */, + interrupt_offset, + 0 /* cq_message_addr */); + } + + /* + * Init INTR resources + * + * mask_on_assertion is not used for INTx due to the level- + * triggered nature of INTx + */ + + switch (intr_mode) { + case VNIC_DEV_INTR_MODE_MSI: + case VNIC_DEV_INTR_MODE_MSIX: + mask_on_assertion = 1; + break; + default: + mask_on_assertion = 0; + break; + } + + for (i = 0; i < fnic->intr_count; i++) { + vnic_intr_init(&fnic->intr[i], + fnic->config.intr_timer, + fnic->config.intr_timer_type, + mask_on_assertion); + } + + /* init the stats memory by making the first call here */ + err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); + if (err) { + shost_printk(KERN_ERR, fnic->lport->host, + "vnic_dev_stats_dump failed - x%x\n", err); + goto err_out_cleanup; + } + + /* Clear LIF stats */ + vnic_dev_stats_clear(fnic->vdev); + + return 0; + +err_out_cleanup: + fnic_free_vnic_resources(fnic); + + return err; +} diff --git a/drivers/scsi/fnic/fnic_res.h b/drivers/scsi/fnic/fnic_res.h new file mode 100644 index 00000000000..b6f31026253 --- /dev/null +++ b/drivers/scsi/fnic/fnic_res.h @@ -0,0 +1,197 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _FNIC_RES_H_ +#define _FNIC_RES_H_ + +#include "wq_enet_desc.h" +#include "rq_enet_desc.h" +#include "vnic_wq.h" +#include "vnic_rq.h" +#include "fnic_io.h" +#include "fcpio.h" +#include "vnic_wq_copy.h" +#include "vnic_cq_copy.h" + +static inline void fnic_queue_wq_desc(struct vnic_wq *wq, + void *os_buf, dma_addr_t dma_addr, + unsigned int len, unsigned int fc_eof, + int vlan_tag_insert, + unsigned int vlan_tag, + int cq_entry, int sop, int eop) +{ + struct wq_enet_desc *desc = vnic_wq_next_desc(wq); + + wq_enet_desc_enc(desc, + (u64)dma_addr | VNIC_PADDR_TARGET, + (u16)len, + 0, /* mss_or_csum_offset */ + (u16)fc_eof, + 0, /* offload_mode */ + (u8)eop, (u8)cq_entry, + 1, /* fcoe_encap */ + (u8)vlan_tag_insert, + (u16)vlan_tag, + 0 /* loopback */); + + vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop); +} + +static inline void fnic_queue_wq_copy_desc_icmnd_16(struct vnic_wq_copy *wq, + u32 req_id, + u32 lunmap_id, u8 spl_flags, + u32 sgl_cnt, u32 sense_len, + u64 sgl_addr, u64 sns_addr, + u8 crn, u8 pri_ta, + u8 flags, u8 *scsi_cdb, + u32 data_len, u8 *lun, + u32 d_id, u16 mss, + u32 ratov, u32 edtov) +{ + struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq); + + desc->hdr.type = FCPIO_ICMND_16; /* enum fcpio_type */ + desc->hdr.status = 0; /* header status entry */ + desc->hdr._resvd = 0; /* reserved */ + desc->hdr.tag.u.req_id = req_id; /* id for this request */ + + desc->u.icmnd_16.lunmap_id = lunmap_id; /* index into lunmap table */ + desc->u.icmnd_16.special_req_flags = spl_flags; /* exch req flags */ + desc->u.icmnd_16._resvd0[0] = 0; /* reserved */ + desc->u.icmnd_16._resvd0[1] = 0; /* reserved */ + desc->u.icmnd_16._resvd0[2] = 0; /* reserved */ + desc->u.icmnd_16.sgl_cnt = sgl_cnt; /* scatter-gather list count */ + desc->u.icmnd_16.sense_len = sense_len; /* sense buffer length */ + desc->u.icmnd_16.sgl_addr = sgl_addr; /* scatter-gather list addr */ + desc->u.icmnd_16.sense_addr = sns_addr; /* sense buffer address */ + desc->u.icmnd_16.crn = crn; /* SCSI Command Reference No.*/ + desc->u.icmnd_16.pri_ta = pri_ta; /* SCSI Pri & Task attribute */ + desc->u.icmnd_16._resvd1 = 0; /* reserved: should be 0 */ + desc->u.icmnd_16.flags = flags; /* command flags */ + memcpy(desc->u.icmnd_16.scsi_cdb, scsi_cdb, CDB_16); /* SCSI CDB */ + desc->u.icmnd_16.data_len = data_len; /* length of data expected */ + memcpy(desc->u.icmnd_16.lun, lun, LUN_ADDRESS); /* LUN address */ + desc->u.icmnd_16._resvd2 = 0; /* reserved */ + hton24(desc->u.icmnd_16.d_id, d_id); /* FC vNIC only: Target D_ID */ + desc->u.icmnd_16.mss = mss; /* FC vNIC only: max burst */ + desc->u.icmnd_16.r_a_tov = ratov; /*FC vNIC only: Res. Alloc Timeout */ + desc->u.icmnd_16.e_d_tov = edtov; /*FC vNIC only: Err Detect Timeout */ + + vnic_wq_copy_post(wq); +} + +static inline void fnic_queue_wq_copy_desc_itmf(struct vnic_wq_copy *wq, + u32 req_id, u32 lunmap_id, + u32 tm_req, u32 tm_id, u8 *lun, + u32 d_id, u32 r_a_tov, + u32 e_d_tov) +{ + struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq); + + desc->hdr.type = FCPIO_ITMF; /* enum fcpio_type */ + desc->hdr.status = 0; /* header status entry */ + desc->hdr._resvd = 0; /* reserved */ + desc->hdr.tag.u.req_id = req_id; /* id for this request */ + + desc->u.itmf.lunmap_id = lunmap_id; /* index into lunmap table */ + desc->u.itmf.tm_req = tm_req; /* SCSI Task Management request */ + desc->u.itmf.t_tag = tm_id; /* tag of fcpio to be aborted */ + desc->u.itmf._resvd = 0; + memcpy(desc->u.itmf.lun, lun, LUN_ADDRESS); /* LUN address */ + desc->u.itmf._resvd1 = 0; + hton24(desc->u.itmf.d_id, d_id); /* FC vNIC only: Target D_ID */ + desc->u.itmf.r_a_tov = r_a_tov; /* FC vNIC only: R_A_TOV in msec */ + desc->u.itmf.e_d_tov = e_d_tov; /* FC vNIC only: E_D_TOV in msec */ + + vnic_wq_copy_post(wq); +} + +static inline void fnic_queue_wq_copy_desc_flogi_reg(struct vnic_wq_copy *wq, + u32 req_id, u8 format, + u32 s_id, u8 *gw_mac) +{ + struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq); + + desc->hdr.type = FCPIO_FLOGI_REG; /* enum fcpio_type */ + desc->hdr.status = 0; /* header status entry */ + desc->hdr._resvd = 0; /* reserved */ + desc->hdr.tag.u.req_id = req_id; /* id for this request */ + + desc->u.flogi_reg.format = format; + hton24(desc->u.flogi_reg.s_id, s_id); + memcpy(desc->u.flogi_reg.gateway_mac, gw_mac, ETH_ALEN); + + vnic_wq_copy_post(wq); +} + +static inline void fnic_queue_wq_copy_desc_fw_reset(struct vnic_wq_copy *wq, + u32 req_id) +{ + struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq); + + desc->hdr.type = FCPIO_RESET; /* enum fcpio_type */ + desc->hdr.status = 0; /* header status entry */ + desc->hdr._resvd = 0; /* reserved */ + desc->hdr.tag.u.req_id = req_id; /* id for this request */ + + vnic_wq_copy_post(wq); +} + +static inline void fnic_queue_wq_copy_desc_lunmap(struct vnic_wq_copy *wq, + u32 req_id, u64 lunmap_addr, + u32 lunmap_len) +{ + struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq); + + desc->hdr.type = FCPIO_LUNMAP_REQ; /* enum fcpio_type */ + desc->hdr.status = 0; /* header status entry */ + desc->hdr._resvd = 0; /* reserved */ + desc->hdr.tag.u.req_id = req_id; /* id for this request */ + + desc->u.lunmap_req.addr = lunmap_addr; /* address of the buffer */ + desc->u.lunmap_req.len = lunmap_len; /* len of the buffer */ + + vnic_wq_copy_post(wq); +} + +static inline void fnic_queue_rq_desc(struct vnic_rq *rq, + void *os_buf, dma_addr_t dma_addr, + u16 len) +{ + struct rq_enet_desc *desc = vnic_rq_next_desc(rq); + + rq_enet_desc_enc(desc, + (u64)dma_addr | VNIC_PADDR_TARGET, + RQ_ENET_TYPE_ONLY_SOP, + (u16)len); + + vnic_rq_post(rq, os_buf, 0, dma_addr, len); +} + + +struct fnic; + +int fnic_get_vnic_config(struct fnic *); +int fnic_alloc_vnic_resources(struct fnic *); +void fnic_free_vnic_resources(struct fnic *); +void fnic_get_res_counts(struct fnic *); +int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu, + u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, + u8 rss_enable, u8 tso_ipid_split_en, + u8 ig_vlan_strip_en); + +#endif /* _FNIC_RES_H_ */ diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c new file mode 100644 index 00000000000..eabf3650285 --- /dev/null +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -0,0 +1,1850 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include <linux/mempool.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/workqueue.h> +#include <linux/pci.h> +#include <linux/scatterlist.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/if_ether.h> +#include <linux/if_vlan.h> +#include <linux/delay.h> +#include <scsi/scsi.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_tcq.h> +#include <scsi/fc/fc_els.h> +#include <scsi/fc/fc_fcoe.h> +#include <scsi/libfc.h> +#include <scsi/fc_frame.h> +#include "fnic_io.h" +#include "fnic.h" + +const char *fnic_state_str[] = { + [FNIC_IN_FC_MODE] = "FNIC_IN_FC_MODE", + [FNIC_IN_FC_TRANS_ETH_MODE] = "FNIC_IN_FC_TRANS_ETH_MODE", + [FNIC_IN_ETH_MODE] = "FNIC_IN_ETH_MODE", + [FNIC_IN_ETH_TRANS_FC_MODE] = "FNIC_IN_ETH_TRANS_FC_MODE", +}; + +static const char *fnic_ioreq_state_str[] = { + [FNIC_IOREQ_CMD_PENDING] = "FNIC_IOREQ_CMD_PENDING", + [FNIC_IOREQ_ABTS_PENDING] = "FNIC_IOREQ_ABTS_PENDING", + [FNIC_IOREQ_ABTS_COMPLETE] = "FNIC_IOREQ_ABTS_COMPLETE", + [FNIC_IOREQ_CMD_COMPLETE] = "FNIC_IOREQ_CMD_COMPLETE", +}; + +static const char *fcpio_status_str[] = { + [FCPIO_SUCCESS] = "FCPIO_SUCCESS", /*0x0*/ + [FCPIO_INVALID_HEADER] = "FCPIO_INVALID_HEADER", + [FCPIO_OUT_OF_RESOURCE] = "FCPIO_OUT_OF_RESOURCE", + [FCPIO_INVALID_PARAM] = "FCPIO_INVALID_PARAM]", + [FCPIO_REQ_NOT_SUPPORTED] = "FCPIO_REQ_NOT_SUPPORTED", + [FCPIO_IO_NOT_FOUND] = "FCPIO_IO_NOT_FOUND", + [FCPIO_ABORTED] = "FCPIO_ABORTED", /*0x41*/ + [FCPIO_TIMEOUT] = "FCPIO_TIMEOUT", + [FCPIO_SGL_INVALID] = "FCPIO_SGL_INVALID", + [FCPIO_MSS_INVALID] = "FCPIO_MSS_INVALID", + [FCPIO_DATA_CNT_MISMATCH] = "FCPIO_DATA_CNT_MISMATCH", + [FCPIO_FW_ERR] = "FCPIO_FW_ERR", + [FCPIO_ITMF_REJECTED] = "FCPIO_ITMF_REJECTED", + [FCPIO_ITMF_FAILED] = "FCPIO_ITMF_FAILED", + [FCPIO_ITMF_INCORRECT_LUN] = "FCPIO_ITMF_INCORRECT_LUN", + [FCPIO_CMND_REJECTED] = "FCPIO_CMND_REJECTED", + [FCPIO_NO_PATH_AVAIL] = "FCPIO_NO_PATH_AVAIL", + [FCPIO_PATH_FAILED] = "FCPIO_PATH_FAILED", + [FCPIO_LUNMAP_CHNG_PEND] = "FCPIO_LUNHMAP_CHNG_PEND", +}; + +const char *fnic_state_to_str(unsigned int state) +{ + if (state >= ARRAY_SIZE(fnic_state_str) || !fnic_state_str[state]) + return "unknown"; + + return fnic_state_str[state]; +} + +static const char *fnic_ioreq_state_to_str(unsigned int state) +{ + if (state >= ARRAY_SIZE(fnic_ioreq_state_str) || + !fnic_ioreq_state_str[state]) + return "unknown"; + + return fnic_ioreq_state_str[state]; +} + +static const char *fnic_fcpio_status_to_str(unsigned int status) +{ + if (status >= ARRAY_SIZE(fcpio_status_str) || !fcpio_status_str[status]) + return "unknown"; + + return fcpio_status_str[status]; +} + +static void fnic_cleanup_io(struct fnic *fnic, int exclude_id); + +static inline spinlock_t *fnic_io_lock_hash(struct fnic *fnic, + struct scsi_cmnd *sc) +{ + u32 hash = sc->request->tag & (FNIC_IO_LOCKS - 1); + + return &fnic->io_req_lock[hash]; +} + +/* + * Unmap the data buffer and sense buffer for an io_req, + * also unmap and free the device-private scatter/gather list. + */ +static void fnic_release_ioreq_buf(struct fnic *fnic, + struct fnic_io_req *io_req, + struct scsi_cmnd *sc) +{ + if (io_req->sgl_list_pa) + pci_unmap_single(fnic->pdev, io_req->sgl_list_pa, + sizeof(io_req->sgl_list[0]) * io_req->sgl_cnt, + PCI_DMA_TODEVICE); + scsi_dma_unmap(sc); + + if (io_req->sgl_cnt) + mempool_free(io_req->sgl_list_alloc, + fnic->io_sgl_pool[io_req->sgl_type]); + if (io_req->sense_buf_pa) + pci_unmap_single(fnic->pdev, io_req->sense_buf_pa, + SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE); +} + +/* Free up Copy Wq descriptors. Called with copy_wq lock held */ +static int free_wq_copy_descs(struct fnic *fnic, struct vnic_wq_copy *wq) +{ + /* if no Ack received from firmware, then nothing to clean */ + if (!fnic->fw_ack_recd[0]) + return 1; + + /* + * Update desc_available count based on number of freed descriptors + * Account for wraparound + */ + if (wq->to_clean_index <= fnic->fw_ack_index[0]) + wq->ring.desc_avail += (fnic->fw_ack_index[0] + - wq->to_clean_index + 1); + else + wq->ring.desc_avail += (wq->ring.desc_count + - wq->to_clean_index + + fnic->fw_ack_index[0] + 1); + + /* + * just bump clean index to ack_index+1 accounting for wraparound + * this will essentially free up all descriptors between + * to_clean_index and fw_ack_index, both inclusive + */ + wq->to_clean_index = + (fnic->fw_ack_index[0] + 1) % wq->ring.desc_count; + + /* we have processed the acks received so far */ + fnic->fw_ack_recd[0] = 0; + return 0; +} + + +/* + * fnic_fw_reset_handler + * Routine to send reset msg to fw + */ +int fnic_fw_reset_handler(struct fnic *fnic) +{ + struct vnic_wq_copy *wq = &fnic->wq_copy[0]; + int ret = 0; + unsigned long flags; + + spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); + + if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) + free_wq_copy_descs(fnic, wq); + + if (!vnic_wq_copy_desc_avail(wq)) + ret = -EAGAIN; + else + fnic_queue_wq_copy_desc_fw_reset(wq, SCSI_NO_TAG); + + spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); + + if (!ret) + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Issued fw reset\n"); + else + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Failed to issue fw reset\n"); + return ret; +} + + +/* + * fnic_flogi_reg_handler + * Routine to send flogi register msg to fw + */ +int fnic_flogi_reg_handler(struct fnic *fnic) +{ + struct vnic_wq_copy *wq = &fnic->wq_copy[0]; + u8 gw_mac[ETH_ALEN]; + int ret = 0; + unsigned long flags; + + spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); + + if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) + free_wq_copy_descs(fnic, wq); + + if (!vnic_wq_copy_desc_avail(wq)) { + ret = -EAGAIN; + goto flogi_reg_ioreq_end; + } + + if (fnic->fcoui_mode) + memset(gw_mac, 0xff, ETH_ALEN); + else + memcpy(gw_mac, fnic->dest_addr, ETH_ALEN); + + fnic_queue_wq_copy_desc_flogi_reg(wq, SCSI_NO_TAG, + FCPIO_FLOGI_REG_GW_DEST, + fnic->s_id, + gw_mac); + +flogi_reg_ioreq_end: + spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); + + if (!ret) + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "flog reg issued\n"); + + return ret; +} + +/* + * fnic_queue_wq_copy_desc + * Routine to enqueue a wq copy desc + */ +static inline int fnic_queue_wq_copy_desc(struct fnic *fnic, + struct vnic_wq_copy *wq, + struct fnic_io_req *io_req, + struct scsi_cmnd *sc, + u32 sg_count) +{ + struct scatterlist *sg; + struct fc_rport *rport = starget_to_rport(scsi_target(sc->device)); + struct fc_rport_libfc_priv *rp = rport->dd_data; + struct host_sg_desc *desc; + u8 pri_tag = 0; + unsigned int i; + unsigned long intr_flags; + int flags; + u8 exch_flags; + struct scsi_lun fc_lun; + char msg[2]; + + if (sg_count) { + BUG_ON(sg_count < 0); + BUG_ON(sg_count > FNIC_MAX_SG_DESC_CNT); + + /* For each SGE, create a device desc entry */ + desc = io_req->sgl_list; + for_each_sg(scsi_sglist(sc), sg, sg_count, i) { + desc->addr = cpu_to_le64(sg_dma_address(sg)); + desc->len = cpu_to_le32(sg_dma_len(sg)); + desc->_resvd = 0; + desc++; + } + + io_req->sgl_list_pa = pci_map_single + (fnic->pdev, + io_req->sgl_list, + sizeof(io_req->sgl_list[0]) * sg_count, + PCI_DMA_TODEVICE); + } + + io_req->sense_buf_pa = pci_map_single(fnic->pdev, + sc->sense_buffer, + SCSI_SENSE_BUFFERSIZE, + PCI_DMA_FROMDEVICE); + + int_to_scsilun(sc->device->lun, &fc_lun); + + pri_tag = FCPIO_ICMND_PTA_SIMPLE; + msg[0] = MSG_SIMPLE_TAG; + scsi_populate_tag_msg(sc, msg); + if (msg[0] == MSG_ORDERED_TAG) + pri_tag = FCPIO_ICMND_PTA_ORDERED; + + /* Enqueue the descriptor in the Copy WQ */ + spin_lock_irqsave(&fnic->wq_copy_lock[0], intr_flags); + + if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) + free_wq_copy_descs(fnic, wq); + + if (unlikely(!vnic_wq_copy_desc_avail(wq))) { + spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); + return SCSI_MLQUEUE_HOST_BUSY; + } + + flags = 0; + if (sc->sc_data_direction == DMA_FROM_DEVICE) + flags = FCPIO_ICMND_RDDATA; + else if (sc->sc_data_direction == DMA_TO_DEVICE) + flags = FCPIO_ICMND_WRDATA; + + exch_flags = 0; + if ((fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) && + (rp->flags & FC_RP_FLAGS_RETRY)) + exch_flags |= FCPIO_ICMND_SRFLAG_RETRY; + + fnic_queue_wq_copy_desc_icmnd_16(wq, sc->request->tag, + 0, exch_flags, io_req->sgl_cnt, + SCSI_SENSE_BUFFERSIZE, + io_req->sgl_list_pa, + io_req->sense_buf_pa, + 0, /* scsi cmd ref, always 0 */ + pri_tag, /* scsi pri and tag */ + flags, /* command flags */ + sc->cmnd, scsi_bufflen(sc), + fc_lun.scsi_lun, io_req->port_id, + rport->maxframe_size, rp->r_a_tov, + rp->e_d_tov); + + spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); + return 0; +} + +/* + * fnic_queuecommand + * Routine to send a scsi cdb + * Called with host_lock held and interrupts disabled. + */ +int fnic_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) +{ + struct fc_lport *lp; + struct fc_rport *rport; + struct fnic_io_req *io_req; + struct fnic *fnic; + struct vnic_wq_copy *wq; + int ret; + u32 sg_count; + unsigned long flags; + unsigned long ptr; + + rport = starget_to_rport(scsi_target(sc->device)); + ret = fc_remote_port_chkready(rport); + if (ret) { + sc->result = ret; + done(sc); + return 0; + } + + lp = shost_priv(sc->device->host); + if (lp->state != LPORT_ST_READY || !(lp->link_up)) + return SCSI_MLQUEUE_HOST_BUSY; + + /* + * Release host lock, use driver resource specific locks from here. + * Don't re-enable interrupts in case they were disabled prior to the + * caller disabling them. + */ + spin_unlock(lp->host->host_lock); + + /* Get a new io_req for this SCSI IO */ + fnic = lport_priv(lp); + + io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); + if (!io_req) { + ret = SCSI_MLQUEUE_HOST_BUSY; + goto out; + } + memset(io_req, 0, sizeof(*io_req)); + + /* Map the data buffer */ + sg_count = scsi_dma_map(sc); + if (sg_count < 0) { + mempool_free(io_req, fnic->io_req_pool); + goto out; + } + + /* Determine the type of scatter/gather list we need */ + io_req->sgl_cnt = sg_count; + io_req->sgl_type = FNIC_SGL_CACHE_DFLT; + if (sg_count > FNIC_DFLT_SG_DESC_CNT) + io_req->sgl_type = FNIC_SGL_CACHE_MAX; + + if (sg_count) { + io_req->sgl_list = + mempool_alloc(fnic->io_sgl_pool[io_req->sgl_type], + GFP_ATOMIC | GFP_DMA); + if (!io_req->sgl_list) { + ret = SCSI_MLQUEUE_HOST_BUSY; + scsi_dma_unmap(sc); + mempool_free(io_req, fnic->io_req_pool); + goto out; + } + + /* Cache sgl list allocated address before alignment */ + io_req->sgl_list_alloc = io_req->sgl_list; + ptr = (unsigned long) io_req->sgl_list; + if (ptr % FNIC_SG_DESC_ALIGN) { + io_req->sgl_list = (struct host_sg_desc *) + (((unsigned long) ptr + + FNIC_SG_DESC_ALIGN - 1) + & ~(FNIC_SG_DESC_ALIGN - 1)); + } + } + + /* initialize rest of io_req */ + io_req->port_id = rport->port_id; + CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; + CMD_SP(sc) = (char *)io_req; + sc->scsi_done = done; + + /* create copy wq desc and enqueue it */ + wq = &fnic->wq_copy[0]; + ret = fnic_queue_wq_copy_desc(fnic, wq, io_req, sc, sg_count); + if (ret) { + /* + * In case another thread cancelled the request, + * refetch the pointer under the lock. + */ + spinlock_t *io_lock = fnic_io_lock_hash(fnic, sc); + + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + CMD_SP(sc) = NULL; + CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; + spin_unlock_irqrestore(io_lock, flags); + if (io_req) { + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); + } + } +out: + /* acquire host lock before returning to SCSI */ + spin_lock(lp->host->host_lock); + return ret; +} + +/* + * fnic_fcpio_fw_reset_cmpl_handler + * Routine to handle fw reset completion + */ +static int fnic_fcpio_fw_reset_cmpl_handler(struct fnic *fnic, + struct fcpio_fw_req *desc) +{ + u8 type; + u8 hdr_status; + struct fcpio_tag tag; + int ret = 0; + struct fc_frame *flogi; + unsigned long flags; + + fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); + + /* Clean up all outstanding io requests */ + fnic_cleanup_io(fnic, SCSI_NO_TAG); + + spin_lock_irqsave(&fnic->fnic_lock, flags); + + flogi = fnic->flogi; + fnic->flogi = NULL; + + /* fnic should be in FC_TRANS_ETH_MODE */ + if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) { + /* Check status of reset completion */ + if (!hdr_status) { + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "reset cmpl success\n"); + /* Ready to send flogi out */ + fnic->state = FNIC_IN_ETH_MODE; + } else { + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "fnic fw_reset : failed %s\n", + fnic_fcpio_status_to_str(hdr_status)); + + /* + * Unable to change to eth mode, cannot send out flogi + * Change state to fc mode, so that subsequent Flogi + * requests from libFC will cause more attempts to + * reset the firmware. Free the cached flogi + */ + fnic->state = FNIC_IN_FC_MODE; + ret = -1; + } + } else { + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "Unexpected state %s while processing" + " reset cmpl\n", fnic_state_to_str(fnic->state)); + ret = -1; + } + + /* Thread removing device blocks till firmware reset is complete */ + if (fnic->remove_wait) + complete(fnic->remove_wait); + + /* + * If fnic is being removed, or fw reset failed + * free the flogi frame. Else, send it out + */ + if (fnic->remove_wait || ret) { + fnic->flogi_oxid = FC_XID_UNKNOWN; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + if (flogi) + dev_kfree_skb_irq(fp_skb(flogi)); + goto reset_cmpl_handler_end; + } + + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + if (flogi) + ret = fnic_send_frame(fnic, flogi); + + reset_cmpl_handler_end: + return ret; +} + +/* + * fnic_fcpio_flogi_reg_cmpl_handler + * Routine to handle flogi register completion + */ +static int fnic_fcpio_flogi_reg_cmpl_handler(struct fnic *fnic, + struct fcpio_fw_req *desc) +{ + u8 type; + u8 hdr_status; + struct fcpio_tag tag; + int ret = 0; + struct fc_frame *flogi_resp = NULL; + unsigned long flags; + struct sk_buff *skb; + + fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); + + /* Update fnic state based on status of flogi reg completion */ + spin_lock_irqsave(&fnic->fnic_lock, flags); + + flogi_resp = fnic->flogi_resp; + fnic->flogi_resp = NULL; + + if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE) { + + /* Check flogi registration completion status */ + if (!hdr_status) { + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "flog reg succeeded\n"); + fnic->state = FNIC_IN_FC_MODE; + } else { + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "fnic flogi reg :failed %s\n", + fnic_fcpio_status_to_str(hdr_status)); + fnic->state = FNIC_IN_ETH_MODE; + ret = -1; + } + } else { + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Unexpected fnic state %s while" + " processing flogi reg completion\n", + fnic_state_to_str(fnic->state)); + ret = -1; + } + + /* Successful flogi reg cmpl, pass frame to LibFC */ + if (!ret && flogi_resp) { + if (fnic->stop_rx_link_events) { + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + goto reg_cmpl_handler_end; + } + skb = (struct sk_buff *)flogi_resp; + /* Use fr_flags to indicate whether flogi resp or not */ + fr_flags(flogi_resp) = 1; + fr_dev(flogi_resp) = fnic->lport; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + skb_queue_tail(&fnic->frame_queue, skb); + queue_work(fnic_event_queue, &fnic->frame_work); + + } else { + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + if (flogi_resp) + dev_kfree_skb_irq(fp_skb(flogi_resp)); + } + +reg_cmpl_handler_end: + return ret; +} + +static inline int is_ack_index_in_range(struct vnic_wq_copy *wq, + u16 request_out) +{ + if (wq->to_clean_index <= wq->to_use_index) { + /* out of range, stale request_out index */ + if (request_out < wq->to_clean_index || + request_out >= wq->to_use_index) + return 0; + } else { + /* out of range, stale request_out index */ + if (request_out < wq->to_clean_index && + request_out >= wq->to_use_index) + return 0; + } + /* request_out index is in range */ + return 1; +} + + +/* + * Mark that ack received and store the Ack index. If there are multiple + * acks received before Tx thread cleans it up, the latest value will be + * used which is correct behavior. This state should be in the copy Wq + * instead of in the fnic + */ +static inline void fnic_fcpio_ack_handler(struct fnic *fnic, + unsigned int cq_index, + struct fcpio_fw_req *desc) +{ + struct vnic_wq_copy *wq; + u16 request_out = desc->u.ack.request_out; + unsigned long flags; + + /* mark the ack state */ + wq = &fnic->wq_copy[cq_index - fnic->raw_wq_count - fnic->rq_count]; + spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); + + if (is_ack_index_in_range(wq, request_out)) { + fnic->fw_ack_index[0] = request_out; + fnic->fw_ack_recd[0] = 1; + } + spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); +} + +/* + * fnic_fcpio_icmnd_cmpl_handler + * Routine to handle icmnd completions + */ +static void fnic_fcpio_icmnd_cmpl_handler(struct fnic *fnic, + struct fcpio_fw_req *desc) +{ + u8 type; + u8 hdr_status; + struct fcpio_tag tag; + u32 id; + u64 xfer_len = 0; + struct fcpio_icmnd_cmpl *icmnd_cmpl; + struct fnic_io_req *io_req; + struct scsi_cmnd *sc; + unsigned long flags; + spinlock_t *io_lock; + + /* Decode the cmpl description to get the io_req id */ + fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); + fcpio_tag_id_dec(&tag, &id); + + if (id >= FNIC_MAX_IO_REQ) + return; + + sc = scsi_host_find_tag(fnic->lport->host, id); + WARN_ON_ONCE(!sc); + if (!sc) + return; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + WARN_ON_ONCE(!io_req); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + return; + } + + /* firmware completed the io */ + io_req->io_completed = 1; + + /* + * if SCSI-ML has already issued abort on this command, + * ignore completion of the IO. The abts path will clean it up + */ + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + return; + } + + /* Mark the IO as complete */ + CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; + + icmnd_cmpl = &desc->u.icmnd_cmpl; + + switch (hdr_status) { + case FCPIO_SUCCESS: + sc->result = (DID_OK << 16) | icmnd_cmpl->scsi_status; + xfer_len = scsi_bufflen(sc); + scsi_set_resid(sc, icmnd_cmpl->residual); + + if (icmnd_cmpl->flags & FCPIO_ICMND_CMPL_RESID_UNDER) + xfer_len -= icmnd_cmpl->residual; + + /* + * If queue_full, then try to reduce queue depth for all + * LUNS on the target. Todo: this should be accompanied + * by a periodic queue_depth rampup based on successful + * IO completion. + */ + if (icmnd_cmpl->scsi_status == QUEUE_FULL) { + struct scsi_device *t_sdev; + int qd = 0; + + shost_for_each_device(t_sdev, sc->device->host) { + if (t_sdev->id != sc->device->id) + continue; + + if (t_sdev->queue_depth > 1) { + qd = scsi_track_queue_full + (t_sdev, + t_sdev->queue_depth - 1); + if (qd == -1) + qd = t_sdev->host->cmd_per_lun; + shost_printk(KERN_INFO, + fnic->lport->host, + "scsi[%d:%d:%d:%d" + "] queue full detected," + "new depth = %d\n", + t_sdev->host->host_no, + t_sdev->channel, + t_sdev->id, t_sdev->lun, + t_sdev->queue_depth); + } + } + } + break; + + case FCPIO_TIMEOUT: /* request was timed out */ + sc->result = (DID_TIME_OUT << 16) | icmnd_cmpl->scsi_status; + break; + + case FCPIO_ABORTED: /* request was aborted */ + sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; + break; + + case FCPIO_DATA_CNT_MISMATCH: /* recv/sent more/less data than exp. */ + scsi_set_resid(sc, icmnd_cmpl->residual); + sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; + break; + + case FCPIO_OUT_OF_RESOURCE: /* out of resources to complete request */ + sc->result = (DID_REQUEUE << 16) | icmnd_cmpl->scsi_status; + break; + case FCPIO_INVALID_HEADER: /* header contains invalid data */ + case FCPIO_INVALID_PARAM: /* some parameter in request invalid */ + case FCPIO_REQ_NOT_SUPPORTED:/* request type is not supported */ + case FCPIO_IO_NOT_FOUND: /* requested I/O was not found */ + case FCPIO_SGL_INVALID: /* request was aborted due to sgl error */ + case FCPIO_MSS_INVALID: /* request was aborted due to mss error */ + case FCPIO_FW_ERR: /* request was terminated due fw error */ + default: + shost_printk(KERN_ERR, fnic->lport->host, "hdr status = %s\n", + fnic_fcpio_status_to_str(hdr_status)); + sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; + break; + } + + /* Break link with the SCSI command */ + CMD_SP(sc) = NULL; + + spin_unlock_irqrestore(io_lock, flags); + + fnic_release_ioreq_buf(fnic, io_req, sc); + + mempool_free(io_req, fnic->io_req_pool); + + if (sc->sc_data_direction == DMA_FROM_DEVICE) { + fnic->lport->host_stats.fcp_input_requests++; + fnic->fcp_input_bytes += xfer_len; + } else if (sc->sc_data_direction == DMA_TO_DEVICE) { + fnic->lport->host_stats.fcp_output_requests++; + fnic->fcp_output_bytes += xfer_len; + } else + fnic->lport->host_stats.fcp_control_requests++; + + /* Call SCSI completion function to complete the IO */ + if (sc->scsi_done) + sc->scsi_done(sc); + +} + +/* fnic_fcpio_itmf_cmpl_handler + * Routine to handle itmf completions + */ +static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, + struct fcpio_fw_req *desc) +{ + u8 type; + u8 hdr_status; + struct fcpio_tag tag; + u32 id; + struct scsi_cmnd *sc; + struct fnic_io_req *io_req; + unsigned long flags; + spinlock_t *io_lock; + + fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); + fcpio_tag_id_dec(&tag, &id); + + if ((id & FNIC_TAG_MASK) >= FNIC_MAX_IO_REQ) + return; + + sc = scsi_host_find_tag(fnic->lport->host, id & FNIC_TAG_MASK); + WARN_ON_ONCE(!sc); + if (!sc) + return; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + WARN_ON_ONCE(!io_req); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + return; + } + + if (id & FNIC_TAG_ABORT) { + /* Completion of abort cmd */ + if (CMD_STATE(sc) != FNIC_IOREQ_ABTS_PENDING) { + /* This is a late completion. Ignore it */ + spin_unlock_irqrestore(io_lock, flags); + return; + } + CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; + CMD_ABTS_STATUS(sc) = hdr_status; + + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "abts cmpl recd. id %d status %s\n", + (int)(id & FNIC_TAG_MASK), + fnic_fcpio_status_to_str(hdr_status)); + + /* + * If scsi_eh thread is blocked waiting for abts to complete, + * signal completion to it. IO will be cleaned in the thread + * else clean it in this context + */ + if (io_req->abts_done) { + complete(io_req->abts_done); + spin_unlock_irqrestore(io_lock, flags); + } else { + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "abts cmpl, completing IO\n"); + CMD_SP(sc) = NULL; + sc->result = (DID_ERROR << 16); + + spin_unlock_irqrestore(io_lock, flags); + + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); + if (sc->scsi_done) + sc->scsi_done(sc); + } + + } else if (id & FNIC_TAG_DEV_RST) { + /* Completion of device reset */ + CMD_LR_STATUS(sc) = hdr_status; + CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "dev reset cmpl recd. id %d status %s\n", + (int)(id & FNIC_TAG_MASK), + fnic_fcpio_status_to_str(hdr_status)); + if (io_req->dr_done) + complete(io_req->dr_done); + spin_unlock_irqrestore(io_lock, flags); + + } else { + shost_printk(KERN_ERR, fnic->lport->host, + "Unexpected itmf io state %s tag %x\n", + fnic_ioreq_state_to_str(CMD_STATE(sc)), id); + spin_unlock_irqrestore(io_lock, flags); + } + +} + +/* + * fnic_fcpio_cmpl_handler + * Routine to service the cq for wq_copy + */ +static int fnic_fcpio_cmpl_handler(struct vnic_dev *vdev, + unsigned int cq_index, + struct fcpio_fw_req *desc) +{ + struct fnic *fnic = vnic_dev_priv(vdev); + int ret = 0; + + switch (desc->hdr.type) { + case FCPIO_ACK: /* fw copied copy wq desc to its queue */ + fnic_fcpio_ack_handler(fnic, cq_index, desc); + break; + + case FCPIO_ICMND_CMPL: /* fw completed a command */ + fnic_fcpio_icmnd_cmpl_handler(fnic, desc); + break; + + case FCPIO_ITMF_CMPL: /* fw completed itmf (abort cmd, lun reset)*/ + fnic_fcpio_itmf_cmpl_handler(fnic, desc); + break; + + case FCPIO_FLOGI_REG_CMPL: /* fw completed flogi_reg */ + ret = fnic_fcpio_flogi_reg_cmpl_handler(fnic, desc); + break; + + case FCPIO_RESET_CMPL: /* fw completed reset */ + ret = fnic_fcpio_fw_reset_cmpl_handler(fnic, desc); + break; + + default: + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "firmware completion type %d\n", + desc->hdr.type); + break; + } + + return ret; +} + +/* + * fnic_wq_copy_cmpl_handler + * Routine to process wq copy + */ +int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int copy_work_to_do) +{ + unsigned int wq_work_done = 0; + unsigned int i, cq_index; + unsigned int cur_work_done; + + for (i = 0; i < fnic->wq_copy_count; i++) { + cq_index = i + fnic->raw_wq_count + fnic->rq_count; + cur_work_done = vnic_cq_copy_service(&fnic->cq[cq_index], + fnic_fcpio_cmpl_handler, + copy_work_to_do); + wq_work_done += cur_work_done; + } + return wq_work_done; +} + +static void fnic_cleanup_io(struct fnic *fnic, int exclude_id) +{ + unsigned int i; + struct fnic_io_req *io_req; + unsigned long flags = 0; + struct scsi_cmnd *sc; + spinlock_t *io_lock; + + for (i = 0; i < FNIC_MAX_IO_REQ; i++) { + if (i == exclude_id) + continue; + + sc = scsi_host_find_tag(fnic->lport->host, i); + if (!sc) + continue; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + goto cleanup_scsi_cmd; + } + + CMD_SP(sc) = NULL; + + spin_unlock_irqrestore(io_lock, flags); + + /* + * If there is a scsi_cmnd associated with this io_req, then + * free the corresponding state + */ + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); + +cleanup_scsi_cmd: + sc->result = DID_TRANSPORT_DISRUPTED << 16; + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "fnic_cleanup_io:" + " DID_TRANSPORT_DISRUPTED\n"); + + /* Complete the command to SCSI */ + if (sc->scsi_done) + sc->scsi_done(sc); + } +} + +void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, + struct fcpio_host_req *desc) +{ + u32 id; + struct fnic *fnic = vnic_dev_priv(wq->vdev); + struct fnic_io_req *io_req; + struct scsi_cmnd *sc; + unsigned long flags; + spinlock_t *io_lock; + + /* get the tag reference */ + fcpio_tag_id_dec(&desc->hdr.tag, &id); + id &= FNIC_TAG_MASK; + + if (id >= FNIC_MAX_IO_REQ) + return; + + sc = scsi_host_find_tag(fnic->lport->host, id); + if (!sc) + return; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + + /* Get the IO context which this desc refers to */ + io_req = (struct fnic_io_req *)CMD_SP(sc); + + /* fnic interrupts are turned off by now */ + + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + goto wq_copy_cleanup_scsi_cmd; + } + + CMD_SP(sc) = NULL; + + spin_unlock_irqrestore(io_lock, flags); + + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); + +wq_copy_cleanup_scsi_cmd: + sc->result = DID_NO_CONNECT << 16; + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "wq_copy_cleanup_handler:" + " DID_NO_CONNECT\n"); + + if (sc->scsi_done) + sc->scsi_done(sc); +} + +static inline int fnic_queue_abort_io_req(struct fnic *fnic, int tag, + u32 task_req, u8 *fc_lun, + struct fnic_io_req *io_req) +{ + struct vnic_wq_copy *wq = &fnic->wq_copy[0]; + unsigned long flags; + + spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); + + if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) + free_wq_copy_descs(fnic, wq); + + if (!vnic_wq_copy_desc_avail(wq)) { + spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); + return 1; + } + fnic_queue_wq_copy_desc_itmf(wq, tag | FNIC_TAG_ABORT, + 0, task_req, tag, fc_lun, io_req->port_id, + fnic->config.ra_tov, fnic->config.ed_tov); + + spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); + return 0; +} + +void fnic_rport_exch_reset(struct fnic *fnic, u32 port_id) +{ + int tag; + struct fnic_io_req *io_req; + spinlock_t *io_lock; + unsigned long flags; + struct scsi_cmnd *sc; + struct scsi_lun fc_lun; + enum fnic_ioreq_state old_ioreq_state; + + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "fnic_rport_reset_exch called portid 0x%06x\n", + port_id); + + if (fnic->in_remove) + return; + + for (tag = 0; tag < FNIC_MAX_IO_REQ; tag++) { + sc = scsi_host_find_tag(fnic->lport->host, tag); + if (!sc) + continue; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + + io_req = (struct fnic_io_req *)CMD_SP(sc); + + if (!io_req || io_req->port_id != port_id) { + spin_unlock_irqrestore(io_lock, flags); + continue; + } + + /* + * Found IO that is still pending with firmware and + * belongs to rport that went away + */ + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + continue; + } + old_ioreq_state = CMD_STATE(sc); + CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; + CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; + + BUG_ON(io_req->abts_done); + + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "fnic_rport_reset_exch: Issuing abts\n"); + + spin_unlock_irqrestore(io_lock, flags); + + /* Now queue the abort command to firmware */ + int_to_scsilun(sc->device->lun, &fc_lun); + + if (fnic_queue_abort_io_req(fnic, tag, + FCPIO_ITMF_ABT_TASK_TERM, + fc_lun.scsi_lun, io_req)) { + /* + * Revert the cmd state back to old state, if + * it hasnt changed in between. This cmd will get + * aborted later by scsi_eh, or cleaned up during + * lun reset + */ + io_lock = fnic_io_lock_hash(fnic, sc); + + spin_lock_irqsave(io_lock, flags); + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) + CMD_STATE(sc) = old_ioreq_state; + spin_unlock_irqrestore(io_lock, flags); + } + } + +} + +void fnic_terminate_rport_io(struct fc_rport *rport) +{ + int tag; + struct fnic_io_req *io_req; + spinlock_t *io_lock; + unsigned long flags; + struct scsi_cmnd *sc; + struct scsi_lun fc_lun; + struct fc_rport_libfc_priv *rdata = rport->dd_data; + struct fc_lport *lport = rdata->local_port; + struct fnic *fnic = lport_priv(lport); + struct fc_rport *cmd_rport; + enum fnic_ioreq_state old_ioreq_state; + + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, "fnic_terminate_rport_io called" + " wwpn 0x%llx, wwnn0x%llx, portid 0x%06x\n", + rport->port_name, rport->node_name, + rport->port_id); + + if (fnic->in_remove) + return; + + for (tag = 0; tag < FNIC_MAX_IO_REQ; tag++) { + sc = scsi_host_find_tag(fnic->lport->host, tag); + if (!sc) + continue; + + cmd_rport = starget_to_rport(scsi_target(sc->device)); + if (rport != cmd_rport) + continue; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + + io_req = (struct fnic_io_req *)CMD_SP(sc); + + if (!io_req || rport != cmd_rport) { + spin_unlock_irqrestore(io_lock, flags); + continue; + } + + /* + * Found IO that is still pending with firmware and + * belongs to rport that went away + */ + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + continue; + } + old_ioreq_state = CMD_STATE(sc); + CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; + CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; + + BUG_ON(io_req->abts_done); + + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "fnic_terminate_rport_io: Issuing abts\n"); + + spin_unlock_irqrestore(io_lock, flags); + + /* Now queue the abort command to firmware */ + int_to_scsilun(sc->device->lun, &fc_lun); + + if (fnic_queue_abort_io_req(fnic, tag, + FCPIO_ITMF_ABT_TASK_TERM, + fc_lun.scsi_lun, io_req)) { + /* + * Revert the cmd state back to old state, if + * it hasnt changed in between. This cmd will get + * aborted later by scsi_eh, or cleaned up during + * lun reset + */ + io_lock = fnic_io_lock_hash(fnic, sc); + + spin_lock_irqsave(io_lock, flags); + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) + CMD_STATE(sc) = old_ioreq_state; + spin_unlock_irqrestore(io_lock, flags); + } + } + +} + +static void fnic_block_error_handler(struct scsi_cmnd *sc) +{ + struct Scsi_Host *shost = sc->device->host; + struct fc_rport *rport = starget_to_rport(scsi_target(sc->device)); + unsigned long flags; + + spin_lock_irqsave(shost->host_lock, flags); + while (rport->port_state == FC_PORTSTATE_BLOCKED) { + spin_unlock_irqrestore(shost->host_lock, flags); + msleep(1000); + spin_lock_irqsave(shost->host_lock, flags); + } + spin_unlock_irqrestore(shost->host_lock, flags); + +} + +/* + * This function is exported to SCSI for sending abort cmnds. + * A SCSI IO is represented by a io_req in the driver. + * The ioreq is linked to the SCSI Cmd, thus a link with the ULP's IO. + */ +int fnic_abort_cmd(struct scsi_cmnd *sc) +{ + struct fc_lport *lp; + struct fnic *fnic; + struct fnic_io_req *io_req; + struct fc_rport *rport; + spinlock_t *io_lock; + unsigned long flags; + int ret = SUCCESS; + u32 task_req; + struct scsi_lun fc_lun; + DECLARE_COMPLETION_ONSTACK(tm_done); + + /* Wait for rport to unblock */ + fnic_block_error_handler(sc); + + /* Get local-port, check ready and link up */ + lp = shost_priv(sc->device->host); + + fnic = lport_priv(lp); + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "Abort Cmd called FCID 0x%x, LUN 0x%x TAG %d\n", + (starget_to_rport(scsi_target(sc->device)))->port_id, + sc->device->lun, sc->request->tag); + + if (lp->state != LPORT_ST_READY || !(lp->link_up)) { + ret = FAILED; + goto fnic_abort_cmd_end; + } + + /* + * Avoid a race between SCSI issuing the abort and the device + * completing the command. + * + * If the command is already completed by the fw cmpl code, + * we just return SUCCESS from here. This means that the abort + * succeeded. In the SCSI ML, since the timeout for command has + * happened, the completion wont actually complete the command + * and it will be considered as an aborted command + * + * The CMD_SP will not be cleared except while holding io_req_lock. + */ + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + goto fnic_abort_cmd_end; + } + + io_req->abts_done = &tm_done; + + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + goto wait_pending; + } + /* + * Command is still pending, need to abort it + * If the firmware completes the command after this point, + * the completion wont be done till mid-layer, since abort + * has already started. + */ + CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; + CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; + + spin_unlock_irqrestore(io_lock, flags); + + /* + * Check readiness of the remote port. If the path to remote + * port is up, then send abts to the remote port to terminate + * the IO. Else, just locally terminate the IO in the firmware + */ + rport = starget_to_rport(scsi_target(sc->device)); + if (fc_remote_port_chkready(rport) == 0) + task_req = FCPIO_ITMF_ABT_TASK; + else + task_req = FCPIO_ITMF_ABT_TASK_TERM; + + /* Now queue the abort command to firmware */ + int_to_scsilun(sc->device->lun, &fc_lun); + + if (fnic_queue_abort_io_req(fnic, sc->request->tag, task_req, + fc_lun.scsi_lun, io_req)) { + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (io_req) + io_req->abts_done = NULL; + spin_unlock_irqrestore(io_lock, flags); + ret = FAILED; + goto fnic_abort_cmd_end; + } + + /* + * We queued an abort IO, wait for its completion. + * Once the firmware completes the abort command, it will + * wake up this thread. + */ + wait_pending: + wait_for_completion_timeout(&tm_done, + msecs_to_jiffies + (2 * fnic->config.ra_tov + + fnic->config.ed_tov)); + + /* Check the abort status */ + spin_lock_irqsave(io_lock, flags); + + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + ret = FAILED; + goto fnic_abort_cmd_end; + } + io_req->abts_done = NULL; + + /* fw did not complete abort, timed out */ + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + ret = FAILED; + goto fnic_abort_cmd_end; + } + + /* + * firmware completed the abort, check the status, + * free the io_req irrespective of failure or success + */ + if (CMD_ABTS_STATUS(sc) != FCPIO_SUCCESS) + ret = FAILED; + + CMD_SP(sc) = NULL; + + spin_unlock_irqrestore(io_lock, flags); + + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); + +fnic_abort_cmd_end: + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Returning from abort cmd %s\n", + (ret == SUCCESS) ? + "SUCCESS" : "FAILED"); + return ret; +} + +static inline int fnic_queue_dr_io_req(struct fnic *fnic, + struct scsi_cmnd *sc, + struct fnic_io_req *io_req) +{ + struct vnic_wq_copy *wq = &fnic->wq_copy[0]; + struct scsi_lun fc_lun; + int ret = 0; + unsigned long intr_flags; + + spin_lock_irqsave(&fnic->wq_copy_lock[0], intr_flags); + + if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) + free_wq_copy_descs(fnic, wq); + + if (!vnic_wq_copy_desc_avail(wq)) { + ret = -EAGAIN; + goto lr_io_req_end; + } + + /* fill in the lun info */ + int_to_scsilun(sc->device->lun, &fc_lun); + + fnic_queue_wq_copy_desc_itmf(wq, sc->request->tag | FNIC_TAG_DEV_RST, + 0, FCPIO_ITMF_LUN_RESET, SCSI_NO_TAG, + fc_lun.scsi_lun, io_req->port_id, + fnic->config.ra_tov, fnic->config.ed_tov); + +lr_io_req_end: + spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); + + return ret; +} + +/* + * Clean up any pending aborts on the lun + * For each outstanding IO on this lun, whose abort is not completed by fw, + * issue a local abort. Wait for abort to complete. Return 0 if all commands + * successfully aborted, 1 otherwise + */ +static int fnic_clean_pending_aborts(struct fnic *fnic, + struct scsi_cmnd *lr_sc) +{ + int tag; + struct fnic_io_req *io_req; + spinlock_t *io_lock; + unsigned long flags; + int ret = 0; + struct scsi_cmnd *sc; + struct fc_rport *rport; + struct scsi_lun fc_lun; + struct scsi_device *lun_dev = lr_sc->device; + DECLARE_COMPLETION_ONSTACK(tm_done); + + for (tag = 0; tag < FNIC_MAX_IO_REQ; tag++) { + sc = scsi_host_find_tag(fnic->lport->host, tag); + /* + * ignore this lun reset cmd or cmds that do not belong to + * this lun + */ + if (!sc || sc == lr_sc || sc->device != lun_dev) + continue; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + + io_req = (struct fnic_io_req *)CMD_SP(sc); + + if (!io_req || sc->device != lun_dev) { + spin_unlock_irqrestore(io_lock, flags); + continue; + } + + /* + * Found IO that is still pending with firmware and + * belongs to the LUN that we are resetting + */ + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Found IO in %s on lun\n", + fnic_ioreq_state_to_str(CMD_STATE(sc))); + + BUG_ON(CMD_STATE(sc) != FNIC_IOREQ_ABTS_PENDING); + + CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; + io_req->abts_done = &tm_done; + spin_unlock_irqrestore(io_lock, flags); + + /* Now queue the abort command to firmware */ + int_to_scsilun(sc->device->lun, &fc_lun); + rport = starget_to_rport(scsi_target(sc->device)); + + if (fnic_queue_abort_io_req(fnic, tag, + FCPIO_ITMF_ABT_TASK_TERM, + fc_lun.scsi_lun, io_req)) { + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (io_req) + io_req->abts_done = NULL; + spin_unlock_irqrestore(io_lock, flags); + ret = 1; + goto clean_pending_aborts_end; + } + + wait_for_completion_timeout(&tm_done, + msecs_to_jiffies + (fnic->config.ed_tov)); + + /* Recheck cmd state to check if it is now aborted */ + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + ret = 1; + goto clean_pending_aborts_end; + } + + io_req->abts_done = NULL; + + /* if abort is still pending with fw, fail */ + if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { + spin_unlock_irqrestore(io_lock, flags); + ret = 1; + goto clean_pending_aborts_end; + } + CMD_SP(sc) = NULL; + spin_unlock_irqrestore(io_lock, flags); + + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); + } + +clean_pending_aborts_end: + return ret; +} + +/* + * SCSI Eh thread issues a Lun Reset when one or more commands on a LUN + * fail to get aborted. It calls driver's eh_device_reset with a SCSI command + * on the LUN. + */ +int fnic_device_reset(struct scsi_cmnd *sc) +{ + struct fc_lport *lp; + struct fnic *fnic; + struct fnic_io_req *io_req; + struct fc_rport *rport; + int status; + int ret = FAILED; + spinlock_t *io_lock; + unsigned long flags; + DECLARE_COMPLETION_ONSTACK(tm_done); + + /* Wait for rport to unblock */ + fnic_block_error_handler(sc); + + /* Get local-port, check ready and link up */ + lp = shost_priv(sc->device->host); + + fnic = lport_priv(lp); + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "Device reset called FCID 0x%x, LUN 0x%x\n", + (starget_to_rport(scsi_target(sc->device)))->port_id, + sc->device->lun); + + + if (lp->state != LPORT_ST_READY || !(lp->link_up)) + goto fnic_device_reset_end; + + /* Check if remote port up */ + rport = starget_to_rport(scsi_target(sc->device)); + if (fc_remote_port_chkready(rport)) + goto fnic_device_reset_end; + + io_lock = fnic_io_lock_hash(fnic, sc); + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + + /* + * If there is a io_req attached to this command, then use it, + * else allocate a new one. + */ + if (!io_req) { + io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + goto fnic_device_reset_end; + } + memset(io_req, 0, sizeof(*io_req)); + io_req->port_id = rport->port_id; + CMD_SP(sc) = (char *)io_req; + } + io_req->dr_done = &tm_done; + CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; + CMD_LR_STATUS(sc) = FCPIO_INVALID_CODE; + spin_unlock_irqrestore(io_lock, flags); + + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "TAG %d\n", + sc->request->tag); + + /* + * issue the device reset, if enqueue failed, clean up the ioreq + * and break assoc with scsi cmd + */ + if (fnic_queue_dr_io_req(fnic, sc, io_req)) { + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (io_req) + io_req->dr_done = NULL; + goto fnic_device_reset_clean; + } + + /* + * Wait on the local completion for LUN reset. The io_req may be + * freed while we wait since we hold no lock. + */ + wait_for_completion_timeout(&tm_done, + msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); + + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (!io_req) { + spin_unlock_irqrestore(io_lock, flags); + goto fnic_device_reset_end; + } + io_req->dr_done = NULL; + + status = CMD_LR_STATUS(sc); + spin_unlock_irqrestore(io_lock, flags); + + /* + * If lun reset not completed, bail out with failed. io_req + * gets cleaned up during higher levels of EH + */ + if (status == FCPIO_INVALID_CODE) { + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Device reset timed out\n"); + goto fnic_device_reset_end; + } + + /* Completed, but not successful, clean up the io_req, return fail */ + if (status != FCPIO_SUCCESS) { + spin_lock_irqsave(io_lock, flags); + FNIC_SCSI_DBG(KERN_DEBUG, + fnic->lport->host, + "Device reset completed - failed\n"); + io_req = (struct fnic_io_req *)CMD_SP(sc); + goto fnic_device_reset_clean; + } + + /* + * Clean up any aborts on this lun that have still not + * completed. If any of these fail, then LUN reset fails. + * clean_pending_aborts cleans all cmds on this lun except + * the lun reset cmd. If all cmds get cleaned, the lun reset + * succeeds + */ + if (fnic_clean_pending_aborts(fnic, sc)) { + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Device reset failed" + " since could not abort all IOs\n"); + goto fnic_device_reset_clean; + } + + /* Clean lun reset command */ + spin_lock_irqsave(io_lock, flags); + io_req = (struct fnic_io_req *)CMD_SP(sc); + if (io_req) + /* Completed, and successful */ + ret = SUCCESS; + +fnic_device_reset_clean: + if (io_req) + CMD_SP(sc) = NULL; + + spin_unlock_irqrestore(io_lock, flags); + + if (io_req) { + fnic_release_ioreq_buf(fnic, io_req, sc); + mempool_free(io_req, fnic->io_req_pool); + } + +fnic_device_reset_end: + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Returning from device reset %s\n", + (ret == SUCCESS) ? + "SUCCESS" : "FAILED"); + return ret; +} + +/* Clean up all IOs, clean up libFC local port */ +int fnic_reset(struct Scsi_Host *shost) +{ + struct fc_lport *lp; + struct fnic *fnic; + int ret = SUCCESS; + + lp = shost_priv(shost); + fnic = lport_priv(lp); + + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "fnic_reset called\n"); + + /* + * Reset local port, this will clean up libFC exchanges, + * reset remote port sessions, and if link is up, begin flogi + */ + if (lp->tt.lport_reset(lp)) + ret = FAILED; + + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "Returning from fnic reset %s\n", + (ret == SUCCESS) ? + "SUCCESS" : "FAILED"); + + return ret; +} + +/* + * SCSI Error handling calls driver's eh_host_reset if all prior + * error handling levels return FAILED. If host reset completes + * successfully, and if link is up, then Fabric login begins. + * + * Host Reset is the highest level of error recovery. If this fails, then + * host is offlined by SCSI. + * + */ +int fnic_host_reset(struct scsi_cmnd *sc) +{ + int ret; + unsigned long wait_host_tmo; + struct Scsi_Host *shost = sc->device->host; + struct fc_lport *lp = shost_priv(shost); + + /* + * If fnic_reset is successful, wait for fabric login to complete + * scsi-ml tries to send a TUR to every device if host reset is + * successful, so before returning to scsi, fabric should be up + */ + ret = fnic_reset(shost); + if (ret == SUCCESS) { + wait_host_tmo = jiffies + FNIC_HOST_RESET_SETTLE_TIME * HZ; + ret = FAILED; + while (time_before(jiffies, wait_host_tmo)) { + if ((lp->state == LPORT_ST_READY) && + (lp->link_up)) { + ret = SUCCESS; + break; + } + ssleep(1); + } + } + + return ret; +} + +/* + * This fxn is called from libFC when host is removed + */ +void fnic_scsi_abort_io(struct fc_lport *lp) +{ + int err = 0; + unsigned long flags; + enum fnic_state old_state; + struct fnic *fnic = lport_priv(lp); + DECLARE_COMPLETION_ONSTACK(remove_wait); + + /* Issue firmware reset for fnic, wait for reset to complete */ + spin_lock_irqsave(&fnic->fnic_lock, flags); + fnic->remove_wait = &remove_wait; + old_state = fnic->state; + fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; + vnic_dev_del_addr(fnic->vdev, fnic->data_src_addr); + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + err = fnic_fw_reset_handler(fnic); + if (err) { + spin_lock_irqsave(&fnic->fnic_lock, flags); + if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) + fnic->state = old_state; + fnic->remove_wait = NULL; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + return; + } + + /* Wait for firmware reset to complete */ + wait_for_completion_timeout(&remove_wait, + msecs_to_jiffies(FNIC_RMDEVICE_TIMEOUT)); + + spin_lock_irqsave(&fnic->fnic_lock, flags); + fnic->remove_wait = NULL; + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "fnic_scsi_abort_io %s\n", + (fnic->state == FNIC_IN_ETH_MODE) ? + "SUCCESS" : "FAILED"); + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + +} + +/* + * This fxn called from libFC to clean up driver IO state on link down + */ +void fnic_scsi_cleanup(struct fc_lport *lp) +{ + unsigned long flags; + enum fnic_state old_state; + struct fnic *fnic = lport_priv(lp); + + /* issue fw reset */ + spin_lock_irqsave(&fnic->fnic_lock, flags); + old_state = fnic->state; + fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; + vnic_dev_del_addr(fnic->vdev, fnic->data_src_addr); + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + + if (fnic_fw_reset_handler(fnic)) { + spin_lock_irqsave(&fnic->fnic_lock, flags); + if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) + fnic->state = old_state; + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + } + +} + +void fnic_empty_scsi_cleanup(struct fc_lport *lp) +{ +} + +void fnic_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did) +{ + struct fnic *fnic = lport_priv(lp); + + /* Non-zero sid, nothing to do */ + if (sid) + goto call_fc_exch_mgr_reset; + + if (did) { + fnic_rport_exch_reset(fnic, did); + goto call_fc_exch_mgr_reset; + } + + /* + * sid = 0, did = 0 + * link down or device being removed + */ + if (!fnic->in_remove) + fnic_scsi_cleanup(lp); + else + fnic_scsi_abort_io(lp); + + /* call libFC exch mgr reset to reset its exchanges */ +call_fc_exch_mgr_reset: + fc_exch_mgr_reset(lp, sid, did); + +} diff --git a/drivers/scsi/fnic/rq_enet_desc.h b/drivers/scsi/fnic/rq_enet_desc.h new file mode 100644 index 00000000000..92e80ae6b72 --- /dev/null +++ b/drivers/scsi/fnic/rq_enet_desc.h @@ -0,0 +1,58 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _RQ_ENET_DESC_H_ +#define _RQ_ENET_DESC_H_ + +/* Ethernet receive queue descriptor: 16B */ +struct rq_enet_desc { + __le64 address; + __le16 length_type; + u8 reserved[6]; +}; + +enum rq_enet_type_types { + RQ_ENET_TYPE_ONLY_SOP = 0, + RQ_ENET_TYPE_NOT_SOP = 1, + RQ_ENET_TYPE_RESV2 = 2, + RQ_ENET_TYPE_RESV3 = 3, +}; + +#define RQ_ENET_ADDR_BITS 64 +#define RQ_ENET_LEN_BITS 14 +#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1) +#define RQ_ENET_TYPE_BITS 2 +#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1) + +static inline void rq_enet_desc_enc(struct rq_enet_desc *desc, + u64 address, u8 type, u16 length) +{ + desc->address = cpu_to_le64(address); + desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) | + ((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS)); +} + +static inline void rq_enet_desc_dec(struct rq_enet_desc *desc, + u64 *address, u8 *type, u16 *length) +{ + *address = le64_to_cpu(desc->address); + *length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK; + *type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) & + RQ_ENET_TYPE_MASK); +} + +#endif /* _RQ_ENET_DESC_H_ */ diff --git a/drivers/scsi/fnic/vnic_cq.c b/drivers/scsi/fnic/vnic_cq.c new file mode 100644 index 00000000000..c5db32eda5e --- /dev/null +++ b/drivers/scsi/fnic/vnic_cq.c @@ -0,0 +1,85 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/pci.h> +#include "vnic_dev.h" +#include "vnic_cq.h" + +void vnic_cq_free(struct vnic_cq *cq) +{ + vnic_dev_free_desc_ring(cq->vdev, &cq->ring); + + cq->ctrl = NULL; +} + +int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index, + unsigned int desc_count, unsigned int desc_size) +{ + int err; + + cq->index = index; + cq->vdev = vdev; + + cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index); + if (!cq->ctrl) { + printk(KERN_ERR "Failed to hook CQ[%d] resource\n", index); + return -EINVAL; + } + + err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size); + if (err) + return err; + + return 0; +} + +void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, + unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, + unsigned int cq_tail_color, unsigned int interrupt_enable, + unsigned int cq_entry_enable, unsigned int cq_message_enable, + unsigned int interrupt_offset, u64 cq_message_addr) +{ + u64 paddr; + + paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET; + writeq(paddr, &cq->ctrl->ring_base); + iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size); + iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable); + iowrite32(color_enable, &cq->ctrl->color_enable); + iowrite32(cq_head, &cq->ctrl->cq_head); + iowrite32(cq_tail, &cq->ctrl->cq_tail); + iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color); + iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable); + iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable); + iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable); + iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset); + writeq(cq_message_addr, &cq->ctrl->cq_message_addr); +} + +void vnic_cq_clean(struct vnic_cq *cq) +{ + cq->to_clean = 0; + cq->last_color = 0; + + iowrite32(0, &cq->ctrl->cq_head); + iowrite32(0, &cq->ctrl->cq_tail); + iowrite32(1, &cq->ctrl->cq_tail_color); + + vnic_dev_clear_desc_ring(&cq->ring); +} diff --git a/drivers/scsi/fnic/vnic_cq.h b/drivers/scsi/fnic/vnic_cq.h new file mode 100644 index 00000000000..4ede6809fb1 --- /dev/null +++ b/drivers/scsi/fnic/vnic_cq.h @@ -0,0 +1,121 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_CQ_H_ +#define _VNIC_CQ_H_ + +#include "cq_desc.h" +#include "vnic_dev.h" + +/* + * These defines avoid symbol clash between fnic and enic (Cisco 10G Eth + * Driver) when both are built with CONFIG options =y + */ +#define vnic_cq_service fnic_cq_service +#define vnic_cq_free fnic_cq_free +#define vnic_cq_alloc fnic_cq_alloc +#define vnic_cq_init fnic_cq_init +#define vnic_cq_clean fnic_cq_clean + +/* Completion queue control */ +struct vnic_cq_ctrl { + u64 ring_base; /* 0x00 */ + u32 ring_size; /* 0x08 */ + u32 pad0; + u32 flow_control_enable; /* 0x10 */ + u32 pad1; + u32 color_enable; /* 0x18 */ + u32 pad2; + u32 cq_head; /* 0x20 */ + u32 pad3; + u32 cq_tail; /* 0x28 */ + u32 pad4; + u32 cq_tail_color; /* 0x30 */ + u32 pad5; + u32 interrupt_enable; /* 0x38 */ + u32 pad6; + u32 cq_entry_enable; /* 0x40 */ + u32 pad7; + u32 cq_message_enable; /* 0x48 */ + u32 pad8; + u32 interrupt_offset; /* 0x50 */ + u32 pad9; + u64 cq_message_addr; /* 0x58 */ + u32 pad10; +}; + +struct vnic_cq { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_cq_ctrl __iomem *ctrl; /* memory-mapped */ + struct vnic_dev_ring ring; + unsigned int to_clean; + unsigned int last_color; +}; + +static inline unsigned int vnic_cq_service(struct vnic_cq *cq, + unsigned int work_to_do, + int (*q_service)(struct vnic_dev *vdev, struct cq_desc *cq_desc, + u8 type, u16 q_number, u16 completed_index, void *opaque), + void *opaque) +{ + struct cq_desc *cq_desc; + unsigned int work_done = 0; + u16 q_number, completed_index; + u8 type, color; + + cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + cq_desc_dec(cq_desc, &type, &color, + &q_number, &completed_index); + + while (color != cq->last_color) { + + if ((*q_service)(cq->vdev, cq_desc, type, + q_number, completed_index, opaque)) + break; + + cq->to_clean++; + if (cq->to_clean == cq->ring.desc_count) { + cq->to_clean = 0; + cq->last_color = cq->last_color ? 0 : 1; + } + + cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + cq_desc_dec(cq_desc, &type, &color, + &q_number, &completed_index); + + work_done++; + if (work_done >= work_to_do) + break; + } + + return work_done; +} + +void vnic_cq_free(struct vnic_cq *cq); +int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index, + unsigned int desc_count, unsigned int desc_size); +void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable, + unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail, + unsigned int cq_tail_color, unsigned int interrupt_enable, + unsigned int cq_entry_enable, unsigned int message_enable, + unsigned int interrupt_offset, u64 message_addr); +void vnic_cq_clean(struct vnic_cq *cq); + +#endif /* _VNIC_CQ_H_ */ diff --git a/drivers/scsi/fnic/vnic_cq_copy.h b/drivers/scsi/fnic/vnic_cq_copy.h new file mode 100644 index 00000000000..7901ce255a8 --- /dev/null +++ b/drivers/scsi/fnic/vnic_cq_copy.h @@ -0,0 +1,62 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_CQ_COPY_H_ +#define _VNIC_CQ_COPY_H_ + +#include "fcpio.h" + +static inline unsigned int vnic_cq_copy_service( + struct vnic_cq *cq, + int (*q_service)(struct vnic_dev *vdev, + unsigned int index, + struct fcpio_fw_req *desc), + unsigned int work_to_do) + +{ + struct fcpio_fw_req *desc; + unsigned int work_done = 0; + u8 color; + + desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + fcpio_color_dec(desc, &color); + + while (color != cq->last_color) { + + if ((*q_service)(cq->vdev, cq->index, desc)) + break; + + cq->to_clean++; + if (cq->to_clean == cq->ring.desc_count) { + cq->to_clean = 0; + cq->last_color = cq->last_color ? 0 : 1; + } + + desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs + + cq->ring.desc_size * cq->to_clean); + fcpio_color_dec(desc, &color); + + work_done++; + if (work_done >= work_to_do) + break; + } + + return work_done; +} + +#endif /* _VNIC_CQ_COPY_H_ */ diff --git a/drivers/scsi/fnic/vnic_dev.c b/drivers/scsi/fnic/vnic_dev.c new file mode 100644 index 00000000000..56677064508 --- /dev/null +++ b/drivers/scsi/fnic/vnic_dev.c @@ -0,0 +1,690 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/if_ether.h> +#include "vnic_resource.h" +#include "vnic_devcmd.h" +#include "vnic_dev.h" +#include "vnic_stats.h" + +struct vnic_res { + void __iomem *vaddr; + unsigned int count; +}; + +struct vnic_dev { + void *priv; + struct pci_dev *pdev; + struct vnic_res res[RES_TYPE_MAX]; + enum vnic_dev_intr_mode intr_mode; + struct vnic_devcmd __iomem *devcmd; + struct vnic_devcmd_notify *notify; + struct vnic_devcmd_notify notify_copy; + dma_addr_t notify_pa; + u32 *linkstatus; + dma_addr_t linkstatus_pa; + struct vnic_stats *stats; + dma_addr_t stats_pa; + struct vnic_devcmd_fw_info *fw_info; + dma_addr_t fw_info_pa; +}; + +#define VNIC_MAX_RES_HDR_SIZE \ + (sizeof(struct vnic_resource_header) + \ + sizeof(struct vnic_resource) * RES_TYPE_MAX) +#define VNIC_RES_STRIDE 128 + +void *vnic_dev_priv(struct vnic_dev *vdev) +{ + return vdev->priv; +} + +static int vnic_dev_discover_res(struct vnic_dev *vdev, + struct vnic_dev_bar *bar) +{ + struct vnic_resource_header __iomem *rh; + struct vnic_resource __iomem *r; + u8 type; + + if (bar->len < VNIC_MAX_RES_HDR_SIZE) { + printk(KERN_ERR "vNIC BAR0 res hdr length error\n"); + return -EINVAL; + } + + rh = bar->vaddr; + if (!rh) { + printk(KERN_ERR "vNIC BAR0 res hdr not mem-mapped\n"); + return -EINVAL; + } + + if (ioread32(&rh->magic) != VNIC_RES_MAGIC || + ioread32(&rh->version) != VNIC_RES_VERSION) { + printk(KERN_ERR "vNIC BAR0 res magic/version error " + "exp (%lx/%lx) curr (%x/%x)\n", + VNIC_RES_MAGIC, VNIC_RES_VERSION, + ioread32(&rh->magic), ioread32(&rh->version)); + return -EINVAL; + } + + r = (struct vnic_resource __iomem *)(rh + 1); + + while ((type = ioread8(&r->type)) != RES_TYPE_EOL) { + + u8 bar_num = ioread8(&r->bar); + u32 bar_offset = ioread32(&r->bar_offset); + u32 count = ioread32(&r->count); + u32 len; + + r++; + + if (bar_num != 0) /* only mapping in BAR0 resources */ + continue; + + switch (type) { + case RES_TYPE_WQ: + case RES_TYPE_RQ: + case RES_TYPE_CQ: + case RES_TYPE_INTR_CTRL: + /* each count is stride bytes long */ + len = count * VNIC_RES_STRIDE; + if (len + bar_offset > bar->len) { + printk(KERN_ERR "vNIC BAR0 resource %d " + "out-of-bounds, offset 0x%x + " + "size 0x%x > bar len 0x%lx\n", + type, bar_offset, + len, + bar->len); + return -EINVAL; + } + break; + case RES_TYPE_INTR_PBA_LEGACY: + case RES_TYPE_DEVCMD: + len = count; + break; + default: + continue; + } + + vdev->res[type].count = count; + vdev->res[type].vaddr = (char __iomem *)bar->vaddr + bar_offset; + } + + return 0; +} + +unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, + enum vnic_res_type type) +{ + return vdev->res[type].count; +} + +void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, + unsigned int index) +{ + if (!vdev->res[type].vaddr) + return NULL; + + switch (type) { + case RES_TYPE_WQ: + case RES_TYPE_RQ: + case RES_TYPE_CQ: + case RES_TYPE_INTR_CTRL: + return (char __iomem *)vdev->res[type].vaddr + + index * VNIC_RES_STRIDE; + default: + return (char __iomem *)vdev->res[type].vaddr; + } +} + +unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, + unsigned int desc_count, + unsigned int desc_size) +{ + /* The base address of the desc rings must be 512 byte aligned. + * Descriptor count is aligned to groups of 32 descriptors. A + * count of 0 means the maximum 4096 descriptors. Descriptor + * size is aligned to 16 bytes. + */ + + unsigned int count_align = 32; + unsigned int desc_align = 16; + + ring->base_align = 512; + + if (desc_count == 0) + desc_count = 4096; + + ring->desc_count = ALIGN(desc_count, count_align); + + ring->desc_size = ALIGN(desc_size, desc_align); + + ring->size = ring->desc_count * ring->desc_size; + ring->size_unaligned = ring->size + ring->base_align; + + return ring->size_unaligned; +} + +void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) +{ + memset(ring->descs, 0, ring->size); +} + +int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, + unsigned int desc_count, unsigned int desc_size) +{ + vnic_dev_desc_ring_size(ring, desc_count, desc_size); + + ring->descs_unaligned = pci_alloc_consistent(vdev->pdev, + ring->size_unaligned, + &ring->base_addr_unaligned); + + if (!ring->descs_unaligned) { + printk(KERN_ERR + "Failed to allocate ring (size=%d), aborting\n", + (int)ring->size); + return -ENOMEM; + } + + ring->base_addr = ALIGN(ring->base_addr_unaligned, + ring->base_align); + ring->descs = (u8 *)ring->descs_unaligned + + (ring->base_addr - ring->base_addr_unaligned); + + vnic_dev_clear_desc_ring(ring); + + ring->desc_avail = ring->desc_count - 1; + + return 0; +} + +void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring) +{ + if (ring->descs) { + pci_free_consistent(vdev->pdev, + ring->size_unaligned, + ring->descs_unaligned, + ring->base_addr_unaligned); + ring->descs = NULL; + } +} + +int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, + u64 *a0, u64 *a1, int wait) +{ + struct vnic_devcmd __iomem *devcmd = vdev->devcmd; + int delay; + u32 status; + int dev_cmd_err[] = { + /* convert from fw's version of error.h to host's version */ + 0, /* ERR_SUCCESS */ + EINVAL, /* ERR_EINVAL */ + EFAULT, /* ERR_EFAULT */ + EPERM, /* ERR_EPERM */ + EBUSY, /* ERR_EBUSY */ + }; + int err; + + status = ioread32(&devcmd->status); + if (status & STAT_BUSY) { + printk(KERN_ERR "Busy devcmd %d\n", _CMD_N(cmd)); + return -EBUSY; + } + + if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { + writeq(*a0, &devcmd->args[0]); + writeq(*a1, &devcmd->args[1]); + wmb(); + } + + iowrite32(cmd, &devcmd->cmd); + + if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) + return 0; + + for (delay = 0; delay < wait; delay++) { + + udelay(100); + + status = ioread32(&devcmd->status); + if (!(status & STAT_BUSY)) { + + if (status & STAT_ERROR) { + err = dev_cmd_err[(int)readq(&devcmd->args[0])]; + printk(KERN_ERR "Error %d devcmd %d\n", + err, _CMD_N(cmd)); + return -err; + } + + if (_CMD_DIR(cmd) & _CMD_DIR_READ) { + rmb(); + *a0 = readq(&devcmd->args[0]); + *a1 = readq(&devcmd->args[1]); + } + + return 0; + } + } + + printk(KERN_ERR "Timedout devcmd %d\n", _CMD_N(cmd)); + return -ETIMEDOUT; +} + +int vnic_dev_fw_info(struct vnic_dev *vdev, + struct vnic_devcmd_fw_info **fw_info) +{ + u64 a0, a1 = 0; + int wait = 1000; + int err = 0; + + if (!vdev->fw_info) { + vdev->fw_info = pci_alloc_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_fw_info), + &vdev->fw_info_pa); + if (!vdev->fw_info) + return -ENOMEM; + + a0 = vdev->fw_info_pa; + + /* only get fw_info once and cache it */ + err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait); + } + + *fw_info = vdev->fw_info; + + return err; +} + +int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, + void *value) +{ + u64 a0, a1; + int wait = 1000; + int err; + + a0 = offset; + a1 = size; + + err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait); + + switch (size) { + case 1: + *(u8 *)value = (u8)a0; + break; + case 2: + *(u16 *)value = (u16)a0; + break; + case 4: + *(u32 *)value = (u32)a0; + break; + case 8: + *(u64 *)value = a0; + break; + default: + BUG(); + break; + } + + return err; +} + +int vnic_dev_stats_clear(struct vnic_dev *vdev) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait); +} + +int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) +{ + u64 a0, a1; + int wait = 1000; + + if (!vdev->stats) { + vdev->stats = pci_alloc_consistent(vdev->pdev, + sizeof(struct vnic_stats), &vdev->stats_pa); + if (!vdev->stats) + return -ENOMEM; + } + + *stats = vdev->stats; + a0 = vdev->stats_pa; + a1 = sizeof(struct vnic_stats); + + return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait); +} + +int vnic_dev_close(struct vnic_dev *vdev) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait); +} + +int vnic_dev_enable(struct vnic_dev *vdev) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); +} + +int vnic_dev_disable(struct vnic_dev *vdev) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait); +} + +int vnic_dev_open(struct vnic_dev *vdev, int arg) +{ + u64 a0 = (u32)arg, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait); +} + +int vnic_dev_open_done(struct vnic_dev *vdev, int *done) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + + *done = 0; + + err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait); + if (err) + return err; + + *done = (a0 == 0); + + return 0; +} + +int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg) +{ + u64 a0 = (u32)arg, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait); +} + +int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + + *done = 0; + + err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait); + if (err) + return err; + + *done = (a0 == 0); + + return 0; +} + +int vnic_dev_hang_notify(struct vnic_dev *vdev) +{ + u64 a0, a1; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait); +} + +int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr) +{ + u64 a0, a1; + int wait = 1000; + int err, i; + + for (i = 0; i < ETH_ALEN; i++) + mac_addr[i] = 0; + + err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); + if (err) + return err; + + for (i = 0; i < ETH_ALEN; i++) + mac_addr[i] = ((u8 *)&a0)[i]; + + return 0; +} + +void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, + int broadcast, int promisc, int allmulti) +{ + u64 a0, a1 = 0; + int wait = 1000; + int err; + + a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | + (multicast ? CMD_PFILTER_MULTICAST : 0) | + (broadcast ? CMD_PFILTER_BROADCAST : 0) | + (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | + (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); + + err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait); + if (err) + printk(KERN_ERR "Can't set packet filter\n"); +} + +void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + int i; + + for (i = 0; i < ETH_ALEN; i++) + ((u8 *)&a0)[i] = addr[i]; + + err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); + if (err) + printk(KERN_ERR + "Can't add addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n", + addr[0], addr[1], addr[2], addr[3], addr[4], addr[5], + err); +} + +void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr) +{ + u64 a0 = 0, a1 = 0; + int wait = 1000; + int err; + int i; + + for (i = 0; i < ETH_ALEN; i++) + ((u8 *)&a0)[i] = addr[i]; + + err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait); + if (err) + printk(KERN_ERR + "Can't del addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n", + addr[0], addr[1], addr[2], addr[3], addr[4], addr[5], + err); +} + +int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr) +{ + u64 a0, a1; + int wait = 1000; + + if (!vdev->notify) { + vdev->notify = pci_alloc_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_notify), + &vdev->notify_pa); + if (!vdev->notify) + return -ENOMEM; + } + + a0 = vdev->notify_pa; + a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL; + a1 += sizeof(struct vnic_devcmd_notify); + + return vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); +} + +void vnic_dev_notify_unset(struct vnic_dev *vdev) +{ + u64 a0, a1; + int wait = 1000; + + a0 = 0; /* paddr = 0 to unset notify buffer */ + a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */ + a1 += sizeof(struct vnic_devcmd_notify); + + vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); +} + +static int vnic_dev_notify_ready(struct vnic_dev *vdev) +{ + u32 *words; + unsigned int nwords = sizeof(struct vnic_devcmd_notify) / 4; + unsigned int i; + u32 csum; + + if (!vdev->notify) + return 0; + + do { + csum = 0; + memcpy(&vdev->notify_copy, vdev->notify, + sizeof(struct vnic_devcmd_notify)); + words = (u32 *)&vdev->notify_copy; + for (i = 1; i < nwords; i++) + csum += words[i]; + } while (csum != words[0]); + + return 1; +} + +int vnic_dev_init(struct vnic_dev *vdev, int arg) +{ + u64 a0 = (u32)arg, a1 = 0; + int wait = 1000; + return vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait); +} + +int vnic_dev_link_status(struct vnic_dev *vdev) +{ + if (vdev->linkstatus) + return *vdev->linkstatus; + + if (!vnic_dev_notify_ready(vdev)) + return 0; + + return vdev->notify_copy.link_state; +} + +u32 vnic_dev_port_speed(struct vnic_dev *vdev) +{ + if (!vnic_dev_notify_ready(vdev)) + return 0; + + return vdev->notify_copy.port_speed; +} + +u32 vnic_dev_msg_lvl(struct vnic_dev *vdev) +{ + if (!vnic_dev_notify_ready(vdev)) + return 0; + + return vdev->notify_copy.msglvl; +} + +u32 vnic_dev_mtu(struct vnic_dev *vdev) +{ + if (!vnic_dev_notify_ready(vdev)) + return 0; + + return vdev->notify_copy.mtu; +} + +u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev) +{ + if (!vnic_dev_notify_ready(vdev)) + return 0; + + return vdev->notify_copy.link_down_cnt; +} + +void vnic_dev_set_intr_mode(struct vnic_dev *vdev, + enum vnic_dev_intr_mode intr_mode) +{ + vdev->intr_mode = intr_mode; +} + +enum vnic_dev_intr_mode vnic_dev_get_intr_mode( + struct vnic_dev *vdev) +{ + return vdev->intr_mode; +} + +void vnic_dev_unregister(struct vnic_dev *vdev) +{ + if (vdev) { + if (vdev->notify) + pci_free_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_notify), + vdev->notify, + vdev->notify_pa); + if (vdev->linkstatus) + pci_free_consistent(vdev->pdev, + sizeof(u32), + vdev->linkstatus, + vdev->linkstatus_pa); + if (vdev->stats) + pci_free_consistent(vdev->pdev, + sizeof(struct vnic_dev), + vdev->stats, vdev->stats_pa); + if (vdev->fw_info) + pci_free_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_fw_info), + vdev->fw_info, vdev->fw_info_pa); + kfree(vdev); + } +} + +struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, + void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar) +{ + if (!vdev) { + vdev = kzalloc(sizeof(struct vnic_dev), GFP_KERNEL); + if (!vdev) + return NULL; + } + + vdev->priv = priv; + vdev->pdev = pdev; + + if (vnic_dev_discover_res(vdev, bar)) + goto err_out; + + vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0); + if (!vdev->devcmd) + goto err_out; + + return vdev; + +err_out: + vnic_dev_unregister(vdev); + return NULL; +} diff --git a/drivers/scsi/fnic/vnic_dev.h b/drivers/scsi/fnic/vnic_dev.h new file mode 100644 index 00000000000..f9935a8a5a0 --- /dev/null +++ b/drivers/scsi/fnic/vnic_dev.h @@ -0,0 +1,161 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_DEV_H_ +#define _VNIC_DEV_H_ + +#include "vnic_resource.h" +#include "vnic_devcmd.h" + +/* + * These defines avoid symbol clash between fnic and enic (Cisco 10G Eth + * Driver) when both are built with CONFIG options =y + */ +#define vnic_dev_priv fnic_dev_priv +#define vnic_dev_get_res_count fnic_dev_get_res_count +#define vnic_dev_get_res fnic_dev_get_res +#define vnic_dev_desc_ring_size fnic_dev_desc_ring_siz +#define vnic_dev_clear_desc_ring fnic_dev_clear_desc_ring +#define vnic_dev_alloc_desc_ring fnic_dev_alloc_desc_ring +#define vnic_dev_free_desc_ring fnic_dev_free_desc_ring +#define vnic_dev_cmd fnic_dev_cmd +#define vnic_dev_fw_info fnic_dev_fw_info +#define vnic_dev_spec fnic_dev_spec +#define vnic_dev_stats_clear fnic_dev_stats_clear +#define vnic_dev_stats_dump fnic_dev_stats_dump +#define vnic_dev_hang_notify fnic_dev_hang_notify +#define vnic_dev_packet_filter fnic_dev_packet_filter +#define vnic_dev_add_addr fnic_dev_add_addr +#define vnic_dev_del_addr fnic_dev_del_addr +#define vnic_dev_mac_addr fnic_dev_mac_addr +#define vnic_dev_notify_set fnic_dev_notify_set +#define vnic_dev_notify_unset fnic_dev_notify_unset +#define vnic_dev_link_status fnic_dev_link_status +#define vnic_dev_port_speed fnic_dev_port_speed +#define vnic_dev_msg_lvl fnic_dev_msg_lvl +#define vnic_dev_mtu fnic_dev_mtu +#define vnic_dev_link_down_cnt fnic_dev_link_down_cnt +#define vnic_dev_close fnic_dev_close +#define vnic_dev_enable fnic_dev_enable +#define vnic_dev_disable fnic_dev_disable +#define vnic_dev_open fnic_dev_open +#define vnic_dev_open_done fnic_dev_open_done +#define vnic_dev_init fnic_dev_init +#define vnic_dev_soft_reset fnic_dev_soft_reset +#define vnic_dev_soft_reset_done fnic_dev_soft_reset_done +#define vnic_dev_set_intr_mode fnic_dev_set_intr_mode +#define vnic_dev_get_intr_mode fnic_dev_get_intr_mode +#define vnic_dev_unregister fnic_dev_unregister +#define vnic_dev_register fnic_dev_register + +#ifndef VNIC_PADDR_TARGET +#define VNIC_PADDR_TARGET 0x0000000000000000ULL +#endif + +#ifndef readq +static inline u64 readq(void __iomem *reg) +{ + return ((u64)readl(reg + 0x4UL) << 32) | (u64)readl(reg); +} + +static inline void writeq(u64 val, void __iomem *reg) +{ + writel(val & 0xffffffff, reg); + writel(val >> 32, reg + 0x4UL); +} +#endif + +enum vnic_dev_intr_mode { + VNIC_DEV_INTR_MODE_UNKNOWN, + VNIC_DEV_INTR_MODE_INTX, + VNIC_DEV_INTR_MODE_MSI, + VNIC_DEV_INTR_MODE_MSIX, +}; + +struct vnic_dev_bar { + void __iomem *vaddr; + dma_addr_t bus_addr; + unsigned long len; +}; + +struct vnic_dev_ring { + void *descs; + size_t size; + dma_addr_t base_addr; + size_t base_align; + void *descs_unaligned; + size_t size_unaligned; + dma_addr_t base_addr_unaligned; + unsigned int desc_size; + unsigned int desc_count; + unsigned int desc_avail; +}; + +struct vnic_dev; +struct vnic_stats; + +void *vnic_dev_priv(struct vnic_dev *vdev); +unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, + enum vnic_res_type type); +void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, + unsigned int index); +unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, + unsigned int desc_count, + unsigned int desc_size); +void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring); +int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, + unsigned int desc_count, unsigned int desc_size); +void vnic_dev_free_desc_ring(struct vnic_dev *vdev, + struct vnic_dev_ring *ring); +int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, + u64 *a0, u64 *a1, int wait); +int vnic_dev_fw_info(struct vnic_dev *vdev, + struct vnic_devcmd_fw_info **fw_info); +int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, + unsigned int size, void *value); +int vnic_dev_stats_clear(struct vnic_dev *vdev); +int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats); +int vnic_dev_hang_notify(struct vnic_dev *vdev); +void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, + int broadcast, int promisc, int allmulti); +void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr); +void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr); +int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr); +int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr); +void vnic_dev_notify_unset(struct vnic_dev *vdev); +int vnic_dev_link_status(struct vnic_dev *vdev); +u32 vnic_dev_port_speed(struct vnic_dev *vdev); +u32 vnic_dev_msg_lvl(struct vnic_dev *vdev); +u32 vnic_dev_mtu(struct vnic_dev *vdev); +u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev); +int vnic_dev_close(struct vnic_dev *vdev); +int vnic_dev_enable(struct vnic_dev *vdev); +int vnic_dev_disable(struct vnic_dev *vdev); +int vnic_dev_open(struct vnic_dev *vdev, int arg); +int vnic_dev_open_done(struct vnic_dev *vdev, int *done); +int vnic_dev_init(struct vnic_dev *vdev, int arg); +int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg); +int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done); +void vnic_dev_set_intr_mode(struct vnic_dev *vdev, + enum vnic_dev_intr_mode intr_mode); +enum vnic_dev_intr_mode vnic_dev_get_intr_mode(struct vnic_dev *vdev); +void vnic_dev_unregister(struct vnic_dev *vdev); +struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, + void *priv, struct pci_dev *pdev, + struct vnic_dev_bar *bar); + +#endif /* _VNIC_DEV_H_ */ diff --git a/drivers/scsi/fnic/vnic_devcmd.h b/drivers/scsi/fnic/vnic_devcmd.h new file mode 100644 index 00000000000..d62b9061bf1 --- /dev/null +++ b/drivers/scsi/fnic/vnic_devcmd.h @@ -0,0 +1,281 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_DEVCMD_H_ +#define _VNIC_DEVCMD_H_ + +#define _CMD_NBITS 14 +#define _CMD_VTYPEBITS 10 +#define _CMD_FLAGSBITS 6 +#define _CMD_DIRBITS 2 + +#define _CMD_NMASK ((1 << _CMD_NBITS)-1) +#define _CMD_VTYPEMASK ((1 << _CMD_VTYPEBITS)-1) +#define _CMD_FLAGSMASK ((1 << _CMD_FLAGSBITS)-1) +#define _CMD_DIRMASK ((1 << _CMD_DIRBITS)-1) + +#define _CMD_NSHIFT 0 +#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS) +#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS) +#define _CMD_DIRSHIFT (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS) + +/* + * Direction bits (from host perspective). + */ +#define _CMD_DIR_NONE 0U +#define _CMD_DIR_WRITE 1U +#define _CMD_DIR_READ 2U +#define _CMD_DIR_RW (_CMD_DIR_WRITE | _CMD_DIR_READ) + +/* + * Flag bits. + */ +#define _CMD_FLAGS_NONE 0U +#define _CMD_FLAGS_NOWAIT 1U + +/* + * vNIC type bits. + */ +#define _CMD_VTYPE_NONE 0U +#define _CMD_VTYPE_ENET 1U +#define _CMD_VTYPE_FC 2U +#define _CMD_VTYPE_SCSI 4U +#define _CMD_VTYPE_ALL (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI) + +/* + * Used to create cmds.. +*/ +#define _CMDCF(dir, flags, vtype, nr) \ + (((dir) << _CMD_DIRSHIFT) | \ + ((flags) << _CMD_FLAGSSHIFT) | \ + ((vtype) << _CMD_VTYPESHIFT) | \ + ((nr) << _CMD_NSHIFT)) +#define _CMDC(dir, vtype, nr) _CMDCF(dir, 0, vtype, nr) +#define _CMDCNW(dir, vtype, nr) _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr) + +/* + * Used to decode cmds.. +*/ +#define _CMD_DIR(cmd) (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK) +#define _CMD_FLAGS(cmd) (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK) +#define _CMD_VTYPE(cmd) (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK) +#define _CMD_N(cmd) (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK) + +enum vnic_devcmd_cmd { + CMD_NONE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0), + + /* mcpu fw info in mem: (u64)a0=paddr to struct vnic_devcmd_fw_info */ + CMD_MCPU_FW_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1), + + /* dev-specific block member: + * in: (u16)a0=offset,(u8)a1=size + * out: a0=value */ + CMD_DEV_SPEC = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2), + + /* stats clear */ + CMD_STATS_CLEAR = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3), + + /* stats dump in mem: (u64)a0=paddr to stats area, + * (u16)a1=sizeof stats area */ + CMD_STATS_DUMP = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4), + + /* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */ + CMD_PACKET_FILTER = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 7), + + /* hang detection notification */ + CMD_HANG_NOTIFY = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 8), + + /* MAC address in (u48)a0 */ + CMD_MAC_ADDR = _CMDC(_CMD_DIR_READ, + _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 9), + + /* disable/enable promisc mode: (u8)a0=0/1 */ +/***** XXX DEPRECATED *****/ + CMD_PROMISC_MODE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 10), + + /* disable/enable all-multi mode: (u8)a0=0/1 */ +/***** XXX DEPRECATED *****/ + CMD_ALLMULTI_MODE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 11), + + /* add addr from (u48)a0 */ + CMD_ADDR_ADD = _CMDCNW(_CMD_DIR_WRITE, + _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 12), + + /* del addr from (u48)a0 */ + CMD_ADDR_DEL = _CMDCNW(_CMD_DIR_WRITE, + _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 13), + + /* add VLAN id in (u16)a0 */ + CMD_VLAN_ADD = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 14), + + /* del VLAN id in (u16)a0 */ + CMD_VLAN_DEL = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 15), + + /* nic_cfg in (u32)a0 */ + CMD_NIC_CFG = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16), + + /* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */ + CMD_RSS_KEY = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 17), + + /* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */ + CMD_RSS_CPU = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 18), + + /* initiate softreset */ + CMD_SOFT_RESET = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 19), + + /* softreset status: + * out: a0=0 reset complete, a0=1 reset in progress */ + CMD_SOFT_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 20), + + /* set struct vnic_devcmd_notify buffer in mem: + * in: + * (u64)a0=paddr to notify (set paddr=0 to unset) + * (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify) + * (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr) + * out: + * (u32)a1 = effective size + */ + CMD_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21), + + /* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct, + * (u8)a1=PXENV_UNDI_xxx */ + CMD_UNDI = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 22), + + /* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */ + CMD_OPEN = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23), + + /* open status: + * out: a0=0 open complete, a0=1 open in progress */ + CMD_OPEN_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24), + + /* close vnic */ + CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25), + + /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */ + CMD_INIT = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26), + + /* variant of CMD_INIT, with provisioning info + * (u64)a0=paddr of vnic_devcmd_provinfo + * (u32)a1=sizeof provision info */ + CMD_INIT_PROV_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 27), + + /* enable virtual link */ + CMD_ENABLE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28), + + /* disable virtual link */ + CMD_DISABLE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29), + + /* stats dump all vnics on uplink in mem: (u64)a0=paddr (u32)a1=uif */ + CMD_STATS_DUMP_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30), + + /* init status: + * out: a0=0 init complete, a0=1 init in progress + * if a0=0, a1=errno */ + CMD_INIT_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31), + + /* INT13 API: (u64)a0=paddr to vnic_int13_params struct + * (u8)a1=INT13_CMD_xxx */ + CMD_INT13 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_FC, 32), + + /* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */ + CMD_LOGICAL_UPLINK = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 33), + + /* undo initialize of virtual link */ + CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34), +}; + +/* flags for CMD_OPEN */ +#define CMD_OPENF_OPROM 0x1 /* open coming from option rom */ + +/* flags for CMD_INIT */ +#define CMD_INITF_DEFAULT_MAC 0x1 /* init with default mac addr */ + +/* flags for CMD_PACKET_FILTER */ +#define CMD_PFILTER_DIRECTED 0x01 +#define CMD_PFILTER_MULTICAST 0x02 +#define CMD_PFILTER_BROADCAST 0x04 +#define CMD_PFILTER_PROMISCUOUS 0x08 +#define CMD_PFILTER_ALL_MULTICAST 0x10 + +enum vnic_devcmd_status { + STAT_NONE = 0, + STAT_BUSY = 1 << 0, /* cmd in progress */ + STAT_ERROR = 1 << 1, /* last cmd caused error (code in a0) */ +}; + +enum vnic_devcmd_error { + ERR_SUCCESS = 0, + ERR_EINVAL = 1, + ERR_EFAULT = 2, + ERR_EPERM = 3, + ERR_EBUSY = 4, + ERR_ECMDUNKNOWN = 5, + ERR_EBADSTATE = 6, + ERR_ENOMEM = 7, + ERR_ETIMEDOUT = 8, + ERR_ELINKDOWN = 9, +}; + +struct vnic_devcmd_fw_info { + char fw_version[32]; + char fw_build[32]; + char hw_version[32]; + char hw_serial_number[32]; +}; + +struct vnic_devcmd_notify { + u32 csum; /* checksum over following words */ + + u32 link_state; /* link up == 1 */ + u32 port_speed; /* effective port speed (rate limit) */ + u32 mtu; /* MTU */ + u32 msglvl; /* requested driver msg lvl */ + u32 uif; /* uplink interface */ + u32 status; /* status bits (see VNIC_STF_*) */ + u32 error; /* error code (see ERR_*) for first ERR */ + u32 link_down_cnt; /* running count of link down transitions */ +}; +#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */ + +struct vnic_devcmd_provinfo { + u8 oui[3]; + u8 type; + u8 data[0]; +}; + +/* + * Writing cmd register causes STAT_BUSY to get set in status register. + * When cmd completes, STAT_BUSY will be cleared. + * + * If cmd completed successfully STAT_ERROR will be clear + * and args registers contain cmd-specific results. + * + * If cmd error, STAT_ERROR will be set and args[0] contains error code. + * + * status register is read-only. While STAT_BUSY is set, + * all other register contents are read-only. + */ + +/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */ +#define VNIC_DEVCMD_NARGS 15 +struct vnic_devcmd { + u32 status; /* RO */ + u32 cmd; /* RW */ + u64 args[VNIC_DEVCMD_NARGS]; /* RW cmd args (little-endian) */ +}; + +#endif /* _VNIC_DEVCMD_H_ */ diff --git a/drivers/scsi/fnic/vnic_intr.c b/drivers/scsi/fnic/vnic_intr.c new file mode 100644 index 00000000000..4f4dc8793d2 --- /dev/null +++ b/drivers/scsi/fnic/vnic_intr.c @@ -0,0 +1,60 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include "vnic_dev.h" +#include "vnic_intr.h" + +void vnic_intr_free(struct vnic_intr *intr) +{ + intr->ctrl = NULL; +} + +int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, + unsigned int index) +{ + intr->index = index; + intr->vdev = vdev; + + intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index); + if (!intr->ctrl) { + printk(KERN_ERR "Failed to hook INTR[%d].ctrl resource\n", + index); + return -EINVAL; + } + + return 0; +} + +void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer, + unsigned int coalescing_type, unsigned int mask_on_assertion) +{ + iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer); + iowrite32(coalescing_type, &intr->ctrl->coalescing_type); + iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion); + iowrite32(0, &intr->ctrl->int_credits); +} + +void vnic_intr_clean(struct vnic_intr *intr) +{ + iowrite32(0, &intr->ctrl->int_credits); +} diff --git a/drivers/scsi/fnic/vnic_intr.h b/drivers/scsi/fnic/vnic_intr.h new file mode 100644 index 00000000000..d5fb40e7c98 --- /dev/null +++ b/drivers/scsi/fnic/vnic_intr.h @@ -0,0 +1,118 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_INTR_H_ +#define _VNIC_INTR_H_ + +#include <linux/pci.h> +#include "vnic_dev.h" + +/* + * These defines avoid symbol clash between fnic and enic (Cisco 10G Eth + * Driver) when both are built with CONFIG options =y + */ +#define vnic_intr_unmask fnic_intr_unmask +#define vnic_intr_mask fnic_intr_mask +#define vnic_intr_return_credits fnic_intr_return_credits +#define vnic_intr_credits fnic_intr_credits +#define vnic_intr_return_all_credits fnic_intr_return_all_credits +#define vnic_intr_legacy_pba fnic_intr_legacy_pba +#define vnic_intr_free fnic_intr_free +#define vnic_intr_alloc fnic_intr_alloc +#define vnic_intr_init fnic_intr_init +#define vnic_intr_clean fnic_intr_clean + +#define VNIC_INTR_TIMER_MAX 0xffff + +#define VNIC_INTR_TIMER_TYPE_ABS 0 +#define VNIC_INTR_TIMER_TYPE_QUIET 1 + +/* Interrupt control */ +struct vnic_intr_ctrl { + u32 coalescing_timer; /* 0x00 */ + u32 pad0; + u32 coalescing_value; /* 0x08 */ + u32 pad1; + u32 coalescing_type; /* 0x10 */ + u32 pad2; + u32 mask_on_assertion; /* 0x18 */ + u32 pad3; + u32 mask; /* 0x20 */ + u32 pad4; + u32 int_credits; /* 0x28 */ + u32 pad5; + u32 int_credit_return; /* 0x30 */ + u32 pad6; +}; + +struct vnic_intr { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_intr_ctrl __iomem *ctrl; /* memory-mapped */ +}; + +static inline void vnic_intr_unmask(struct vnic_intr *intr) +{ + iowrite32(0, &intr->ctrl->mask); +} + +static inline void vnic_intr_mask(struct vnic_intr *intr) +{ + iowrite32(1, &intr->ctrl->mask); +} + +static inline void vnic_intr_return_credits(struct vnic_intr *intr, + unsigned int credits, int unmask, int reset_timer) +{ +#define VNIC_INTR_UNMASK_SHIFT 16 +#define VNIC_INTR_RESET_TIMER_SHIFT 17 + + u32 int_credit_return = (credits & 0xffff) | + (unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) | + (reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0); + + iowrite32(int_credit_return, &intr->ctrl->int_credit_return); +} + +static inline unsigned int vnic_intr_credits(struct vnic_intr *intr) +{ + return ioread32(&intr->ctrl->int_credits); +} + +static inline void vnic_intr_return_all_credits(struct vnic_intr *intr) +{ + unsigned int credits = vnic_intr_credits(intr); + int unmask = 1; + int reset_timer = 1; + + vnic_intr_return_credits(intr, credits, unmask, reset_timer); +} + +static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba) +{ + /* read PBA without clearing */ + return ioread32(legacy_pba); +} + +void vnic_intr_free(struct vnic_intr *intr); +int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, + unsigned int index); +void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer, + unsigned int coalescing_type, unsigned int mask_on_assertion); +void vnic_intr_clean(struct vnic_intr *intr); + +#endif /* _VNIC_INTR_H_ */ diff --git a/drivers/scsi/fnic/vnic_nic.h b/drivers/scsi/fnic/vnic_nic.h new file mode 100644 index 00000000000..f15b83eeace --- /dev/null +++ b/drivers/scsi/fnic/vnic_nic.h @@ -0,0 +1,69 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_NIC_H_ +#define _VNIC_NIC_H_ + +/* + * These defines avoid symbol clash between fnic and enic (Cisco 10G Eth + * Driver) when both are built with CONFIG options =y + */ +#define vnic_set_nic_cfg fnic_set_nic_cfg + +#define NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD 0xffUL +#define NIC_CFG_RSS_DEFAULT_CPU_SHIFT 0 +#define NIC_CFG_RSS_HASH_TYPE (0xffUL << 8) +#define NIC_CFG_RSS_HASH_TYPE_MASK_FIELD 0xffUL +#define NIC_CFG_RSS_HASH_TYPE_SHIFT 8 +#define NIC_CFG_RSS_HASH_BITS (7UL << 16) +#define NIC_CFG_RSS_HASH_BITS_MASK_FIELD 7UL +#define NIC_CFG_RSS_HASH_BITS_SHIFT 16 +#define NIC_CFG_RSS_BASE_CPU (7UL << 19) +#define NIC_CFG_RSS_BASE_CPU_MASK_FIELD 7UL +#define NIC_CFG_RSS_BASE_CPU_SHIFT 19 +#define NIC_CFG_RSS_ENABLE (1UL << 22) +#define NIC_CFG_RSS_ENABLE_MASK_FIELD 1UL +#define NIC_CFG_RSS_ENABLE_SHIFT 22 +#define NIC_CFG_TSO_IPID_SPLIT_EN (1UL << 23) +#define NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD 1UL +#define NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT 23 +#define NIC_CFG_IG_VLAN_STRIP_EN (1UL << 24) +#define NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD 1UL +#define NIC_CFG_IG_VLAN_STRIP_EN_SHIFT 24 + +static inline void vnic_set_nic_cfg(u32 *nic_cfg, + u8 rss_default_cpu, u8 rss_hash_type, + u8 rss_hash_bits, u8 rss_base_cpu, + u8 rss_enable, u8 tso_ipid_split_en, + u8 ig_vlan_strip_en) +{ + *nic_cfg = (rss_default_cpu & NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD) | + ((rss_hash_type & NIC_CFG_RSS_HASH_TYPE_MASK_FIELD) + << NIC_CFG_RSS_HASH_TYPE_SHIFT) | + ((rss_hash_bits & NIC_CFG_RSS_HASH_BITS_MASK_FIELD) + << NIC_CFG_RSS_HASH_BITS_SHIFT) | + ((rss_base_cpu & NIC_CFG_RSS_BASE_CPU_MASK_FIELD) + << NIC_CFG_RSS_BASE_CPU_SHIFT) | + ((rss_enable & NIC_CFG_RSS_ENABLE_MASK_FIELD) + << NIC_CFG_RSS_ENABLE_SHIFT) | + ((tso_ipid_split_en & NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD) + << NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT) | + ((ig_vlan_strip_en & NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD) + << NIC_CFG_IG_VLAN_STRIP_EN_SHIFT); +} + +#endif /* _VNIC_NIC_H_ */ diff --git a/drivers/scsi/fnic/vnic_resource.h b/drivers/scsi/fnic/vnic_resource.h new file mode 100644 index 00000000000..2d842f79d41 --- /dev/null +++ b/drivers/scsi/fnic/vnic_resource.h @@ -0,0 +1,61 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_RESOURCE_H_ +#define _VNIC_RESOURCE_H_ + +#define VNIC_RES_MAGIC 0x766E6963L /* 'vnic' */ +#define VNIC_RES_VERSION 0x00000000L + +/* vNIC resource types */ +enum vnic_res_type { + RES_TYPE_EOL, /* End-of-list */ + RES_TYPE_WQ, /* Work queues */ + RES_TYPE_RQ, /* Receive queues */ + RES_TYPE_CQ, /* Completion queues */ + RES_TYPE_RSVD1, + RES_TYPE_NIC_CFG, /* Enet NIC config registers */ + RES_TYPE_RSVD2, + RES_TYPE_RSVD3, + RES_TYPE_RSVD4, + RES_TYPE_RSVD5, + RES_TYPE_INTR_CTRL, /* Interrupt ctrl table */ + RES_TYPE_INTR_TABLE, /* MSI/MSI-X Interrupt table */ + RES_TYPE_INTR_PBA, /* MSI/MSI-X PBA table */ + RES_TYPE_INTR_PBA_LEGACY, /* Legacy intr status */ + RES_TYPE_RSVD6, + RES_TYPE_RSVD7, + RES_TYPE_DEVCMD, /* Device command region */ + RES_TYPE_PASS_THRU_PAGE, /* Pass-thru page */ + + RES_TYPE_MAX, /* Count of resource types */ +}; + +struct vnic_resource_header { + u32 magic; + u32 version; +}; + +struct vnic_resource { + u8 type; + u8 bar; + u8 pad[2]; + u32 bar_offset; + u32 count; +}; + +#endif /* _VNIC_RESOURCE_H_ */ diff --git a/drivers/scsi/fnic/vnic_rq.c b/drivers/scsi/fnic/vnic_rq.c new file mode 100644 index 00000000000..bedd0d28563 --- /dev/null +++ b/drivers/scsi/fnic/vnic_rq.c @@ -0,0 +1,196 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include "vnic_dev.h" +#include "vnic_rq.h" + +static int vnic_rq_alloc_bufs(struct vnic_rq *rq) +{ + struct vnic_rq_buf *buf; + struct vnic_dev *vdev; + unsigned int i, j, count = rq->ring.desc_count; + unsigned int blks = VNIC_RQ_BUF_BLKS_NEEDED(count); + + vdev = rq->vdev; + + for (i = 0; i < blks; i++) { + rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ, GFP_ATOMIC); + if (!rq->bufs[i]) { + printk(KERN_ERR "Failed to alloc rq_bufs\n"); + return -ENOMEM; + } + } + + for (i = 0; i < blks; i++) { + buf = rq->bufs[i]; + for (j = 0; j < VNIC_RQ_BUF_BLK_ENTRIES; j++) { + buf->index = i * VNIC_RQ_BUF_BLK_ENTRIES + j; + buf->desc = (u8 *)rq->ring.descs + + rq->ring.desc_size * buf->index; + if (buf->index + 1 == count) { + buf->next = rq->bufs[0]; + break; + } else if (j + 1 == VNIC_RQ_BUF_BLK_ENTRIES) { + buf->next = rq->bufs[i + 1]; + } else { + buf->next = buf + 1; + buf++; + } + } + } + + rq->to_use = rq->to_clean = rq->bufs[0]; + rq->buf_index = 0; + + return 0; +} + +void vnic_rq_free(struct vnic_rq *rq) +{ + struct vnic_dev *vdev; + unsigned int i; + + vdev = rq->vdev; + + vnic_dev_free_desc_ring(vdev, &rq->ring); + + for (i = 0; i < VNIC_RQ_BUF_BLKS_MAX; i++) { + kfree(rq->bufs[i]); + rq->bufs[i] = NULL; + } + + rq->ctrl = NULL; +} + +int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index, + unsigned int desc_count, unsigned int desc_size) +{ + int err; + + rq->index = index; + rq->vdev = vdev; + + rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index); + if (!rq->ctrl) { + printk(KERN_ERR "Failed to hook RQ[%d] resource\n", index); + return -EINVAL; + } + + vnic_rq_disable(rq); + + err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size); + if (err) + return err; + + err = vnic_rq_alloc_bufs(rq); + if (err) { + vnic_rq_free(rq); + return err; + } + + return 0; +} + +void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset) +{ + u64 paddr; + u32 fetch_index; + + paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET; + writeq(paddr, &rq->ctrl->ring_base); + iowrite32(rq->ring.desc_count, &rq->ctrl->ring_size); + iowrite32(cq_index, &rq->ctrl->cq_index); + iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable); + iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset); + iowrite32(0, &rq->ctrl->dropped_packet_count); + iowrite32(0, &rq->ctrl->error_status); + + /* Use current fetch_index as the ring starting point */ + fetch_index = ioread32(&rq->ctrl->fetch_index); + rq->to_use = rq->to_clean = + &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES] + [fetch_index % VNIC_RQ_BUF_BLK_ENTRIES]; + iowrite32(fetch_index, &rq->ctrl->posted_index); + + rq->buf_index = 0; +} + +unsigned int vnic_rq_error_status(struct vnic_rq *rq) +{ + return ioread32(&rq->ctrl->error_status); +} + +void vnic_rq_enable(struct vnic_rq *rq) +{ + iowrite32(1, &rq->ctrl->enable); +} + +int vnic_rq_disable(struct vnic_rq *rq) +{ + unsigned int wait; + + iowrite32(0, &rq->ctrl->enable); + + /* Wait for HW to ACK disable request */ + for (wait = 0; wait < 100; wait++) { + if (!(ioread32(&rq->ctrl->running))) + return 0; + udelay(1); + } + + printk(KERN_ERR "Failed to disable RQ[%d]\n", rq->index); + + return -ETIMEDOUT; +} + +void vnic_rq_clean(struct vnic_rq *rq, + void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf)) +{ + struct vnic_rq_buf *buf; + u32 fetch_index; + + BUG_ON(ioread32(&rq->ctrl->enable)); + + buf = rq->to_clean; + + while (vnic_rq_desc_used(rq) > 0) { + + (*buf_clean)(rq, buf); + + buf = rq->to_clean = buf->next; + rq->ring.desc_avail++; + } + + /* Use current fetch_index as the ring starting point */ + fetch_index = ioread32(&rq->ctrl->fetch_index); + rq->to_use = rq->to_clean = + &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES] + [fetch_index % VNIC_RQ_BUF_BLK_ENTRIES]; + iowrite32(fetch_index, &rq->ctrl->posted_index); + + rq->buf_index = 0; + + vnic_dev_clear_desc_ring(&rq->ring); +} + diff --git a/drivers/scsi/fnic/vnic_rq.h b/drivers/scsi/fnic/vnic_rq.h new file mode 100644 index 00000000000..aebdfbd6ad3 --- /dev/null +++ b/drivers/scsi/fnic/vnic_rq.h @@ -0,0 +1,235 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_RQ_H_ +#define _VNIC_RQ_H_ + +#include <linux/pci.h> +#include "vnic_dev.h" +#include "vnic_cq.h" + +/* + * These defines avoid symbol clash between fnic and enic (Cisco 10G Eth + * Driver) when both are built with CONFIG options =y + */ +#define vnic_rq_desc_avail fnic_rq_desc_avail +#define vnic_rq_desc_used fnic_rq_desc_used +#define vnic_rq_next_desc fnic_rq_next_desc +#define vnic_rq_next_index fnic_rq_next_index +#define vnic_rq_next_buf_index fnic_rq_next_buf_index +#define vnic_rq_post fnic_rq_post +#define vnic_rq_posting_soon fnic_rq_posting_soon +#define vnic_rq_return_descs fnic_rq_return_descs +#define vnic_rq_service fnic_rq_service +#define vnic_rq_fill fnic_rq_fill +#define vnic_rq_free fnic_rq_free +#define vnic_rq_alloc fnic_rq_alloc +#define vnic_rq_init fnic_rq_init +#define vnic_rq_error_status fnic_rq_error_status +#define vnic_rq_enable fnic_rq_enable +#define vnic_rq_disable fnic_rq_disable +#define vnic_rq_clean fnic_rq_clean + +/* Receive queue control */ +struct vnic_rq_ctrl { + u64 ring_base; /* 0x00 */ + u32 ring_size; /* 0x08 */ + u32 pad0; + u32 posted_index; /* 0x10 */ + u32 pad1; + u32 cq_index; /* 0x18 */ + u32 pad2; + u32 enable; /* 0x20 */ + u32 pad3; + u32 running; /* 0x28 */ + u32 pad4; + u32 fetch_index; /* 0x30 */ + u32 pad5; + u32 error_interrupt_enable; /* 0x38 */ + u32 pad6; + u32 error_interrupt_offset; /* 0x40 */ + u32 pad7; + u32 error_status; /* 0x48 */ + u32 pad8; + u32 dropped_packet_count; /* 0x50 */ + u32 pad9; + u32 dropped_packet_count_rc; /* 0x58 */ + u32 pad10; +}; + +/* Break the vnic_rq_buf allocations into blocks of 64 entries */ +#define VNIC_RQ_BUF_BLK_ENTRIES 64 +#define VNIC_RQ_BUF_BLK_SZ \ + (VNIC_RQ_BUF_BLK_ENTRIES * sizeof(struct vnic_rq_buf)) +#define VNIC_RQ_BUF_BLKS_NEEDED(entries) \ + DIV_ROUND_UP(entries, VNIC_RQ_BUF_BLK_ENTRIES) +#define VNIC_RQ_BUF_BLKS_MAX VNIC_RQ_BUF_BLKS_NEEDED(4096) + +struct vnic_rq_buf { + struct vnic_rq_buf *next; + dma_addr_t dma_addr; + void *os_buf; + unsigned int os_buf_index; + unsigned int len; + unsigned int index; + void *desc; +}; + +struct vnic_rq { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_rq_ctrl __iomem *ctrl; /* memory-mapped */ + struct vnic_dev_ring ring; + struct vnic_rq_buf *bufs[VNIC_RQ_BUF_BLKS_MAX]; + struct vnic_rq_buf *to_use; + struct vnic_rq_buf *to_clean; + void *os_buf_head; + unsigned int buf_index; + unsigned int pkts_outstanding; +}; + +static inline unsigned int vnic_rq_desc_avail(struct vnic_rq *rq) +{ + /* how many does SW own? */ + return rq->ring.desc_avail; +} + +static inline unsigned int vnic_rq_desc_used(struct vnic_rq *rq) +{ + /* how many does HW own? */ + return rq->ring.desc_count - rq->ring.desc_avail - 1; +} + +static inline void *vnic_rq_next_desc(struct vnic_rq *rq) +{ + return rq->to_use->desc; +} + +static inline unsigned int vnic_rq_next_index(struct vnic_rq *rq) +{ + return rq->to_use->index; +} + +static inline unsigned int vnic_rq_next_buf_index(struct vnic_rq *rq) +{ + return rq->buf_index++; +} + +static inline void vnic_rq_post(struct vnic_rq *rq, + void *os_buf, unsigned int os_buf_index, + dma_addr_t dma_addr, unsigned int len) +{ + struct vnic_rq_buf *buf = rq->to_use; + + buf->os_buf = os_buf; + buf->os_buf_index = os_buf_index; + buf->dma_addr = dma_addr; + buf->len = len; + + buf = buf->next; + rq->to_use = buf; + rq->ring.desc_avail--; + + /* Move the posted_index every nth descriptor + */ + +#ifndef VNIC_RQ_RETURN_RATE +#define VNIC_RQ_RETURN_RATE 0xf /* keep 2^n - 1 */ +#endif + + if ((buf->index & VNIC_RQ_RETURN_RATE) == 0) { + /* Adding write memory barrier prevents compiler and/or CPU + * reordering, thus avoiding descriptor posting before + * descriptor is initialized. Otherwise, hardware can read + * stale descriptor fields. + */ + wmb(); + iowrite32(buf->index, &rq->ctrl->posted_index); + } +} + +static inline int vnic_rq_posting_soon(struct vnic_rq *rq) +{ + return (rq->to_use->index & VNIC_RQ_RETURN_RATE) == 0; +} + +static inline void vnic_rq_return_descs(struct vnic_rq *rq, unsigned int count) +{ + rq->ring.desc_avail += count; +} + +enum desc_return_options { + VNIC_RQ_RETURN_DESC, + VNIC_RQ_DEFER_RETURN_DESC, +}; + +static inline void vnic_rq_service(struct vnic_rq *rq, + struct cq_desc *cq_desc, u16 completed_index, + int desc_return, void (*buf_service)(struct vnic_rq *rq, + struct cq_desc *cq_desc, struct vnic_rq_buf *buf, + int skipped, void *opaque), void *opaque) +{ + struct vnic_rq_buf *buf; + int skipped; + + buf = rq->to_clean; + while (1) { + + skipped = (buf->index != completed_index); + + (*buf_service)(rq, cq_desc, buf, skipped, opaque); + + if (desc_return == VNIC_RQ_RETURN_DESC) + rq->ring.desc_avail++; + + rq->to_clean = buf->next; + + if (!skipped) + break; + + buf = rq->to_clean; + } +} + +static inline int vnic_rq_fill(struct vnic_rq *rq, + int (*buf_fill)(struct vnic_rq *rq)) +{ + int err; + + while (vnic_rq_desc_avail(rq) > 1) { + + err = (*buf_fill)(rq); + if (err) + return err; + } + + return 0; +} + +void vnic_rq_free(struct vnic_rq *rq); +int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index, + unsigned int desc_count, unsigned int desc_size); +void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset); +unsigned int vnic_rq_error_status(struct vnic_rq *rq); +void vnic_rq_enable(struct vnic_rq *rq); +int vnic_rq_disable(struct vnic_rq *rq); +void vnic_rq_clean(struct vnic_rq *rq, + void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf)); + +#endif /* _VNIC_RQ_H_ */ diff --git a/drivers/scsi/fnic/vnic_scsi.h b/drivers/scsi/fnic/vnic_scsi.h new file mode 100644 index 00000000000..46baa525400 --- /dev/null +++ b/drivers/scsi/fnic/vnic_scsi.h @@ -0,0 +1,99 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_SCSI_H_ +#define _VNIC_SCSI_H_ + +#define VNIC_FNIC_WQ_COPY_COUNT_MIN 1 +#define VNIC_FNIC_WQ_COPY_COUNT_MAX 1 + +#define VNIC_FNIC_WQ_DESCS_MIN 64 +#define VNIC_FNIC_WQ_DESCS_MAX 128 + +#define VNIC_FNIC_WQ_COPY_DESCS_MIN 64 +#define VNIC_FNIC_WQ_COPY_DESCS_MAX 512 + +#define VNIC_FNIC_RQ_DESCS_MIN 64 +#define VNIC_FNIC_RQ_DESCS_MAX 128 + +#define VNIC_FNIC_EDTOV_MIN 1000 +#define VNIC_FNIC_EDTOV_MAX 255000 +#define VNIC_FNIC_EDTOV_DEF 2000 + +#define VNIC_FNIC_RATOV_MIN 1000 +#define VNIC_FNIC_RATOV_MAX 255000 + +#define VNIC_FNIC_MAXDATAFIELDSIZE_MIN 256 +#define VNIC_FNIC_MAXDATAFIELDSIZE_MAX 2112 + +#define VNIC_FNIC_FLOGI_RETRIES_MIN 0 +#define VNIC_FNIC_FLOGI_RETRIES_MAX 0xffffffff +#define VNIC_FNIC_FLOGI_RETRIES_DEF 0xffffffff + +#define VNIC_FNIC_FLOGI_TIMEOUT_MIN 1000 +#define VNIC_FNIC_FLOGI_TIMEOUT_MAX 255000 + +#define VNIC_FNIC_PLOGI_RETRIES_MIN 0 +#define VNIC_FNIC_PLOGI_RETRIES_MAX 255 +#define VNIC_FNIC_PLOGI_RETRIES_DEF 8 + +#define VNIC_FNIC_PLOGI_TIMEOUT_MIN 1000 +#define VNIC_FNIC_PLOGI_TIMEOUT_MAX 255000 + +#define VNIC_FNIC_IO_THROTTLE_COUNT_MIN 256 +#define VNIC_FNIC_IO_THROTTLE_COUNT_MAX 4096 + +#define VNIC_FNIC_LINK_DOWN_TIMEOUT_MIN 0 +#define VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX 240000 + +#define VNIC_FNIC_PORT_DOWN_TIMEOUT_MIN 0 +#define VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX 240000 + +#define VNIC_FNIC_PORT_DOWN_IO_RETRIES_MIN 0 +#define VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX 255 + +#define VNIC_FNIC_LUNS_PER_TARGET_MIN 1 +#define VNIC_FNIC_LUNS_PER_TARGET_MAX 1024 + +/* Device-specific region: scsi configuration */ +struct vnic_fc_config { + u64 node_wwn; + u64 port_wwn; + u32 flags; + u32 wq_enet_desc_count; + u32 wq_copy_desc_count; + u32 rq_desc_count; + u32 flogi_retries; + u32 flogi_timeout; + u32 plogi_retries; + u32 plogi_timeout; + u32 io_throttle_count; + u32 link_down_timeout; + u32 port_down_timeout; + u32 port_down_io_retries; + u32 luns_per_tgt; + u16 maxdatafieldsize; + u16 ed_tov; + u16 ra_tov; + u16 intr_timer; + u8 intr_timer_type; +}; + +#define VFCF_FCP_SEQ_LVL_ERR 0x1 /* Enable FCP-2 Error Recovery */ +#define VFCF_PERBI 0x2 /* persistent binding info available */ + +#endif /* _VNIC_SCSI_H_ */ diff --git a/drivers/scsi/fnic/vnic_stats.h b/drivers/scsi/fnic/vnic_stats.h new file mode 100644 index 00000000000..5372e23c1cb --- /dev/null +++ b/drivers/scsi/fnic/vnic_stats.h @@ -0,0 +1,68 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_STATS_H_ +#define _VNIC_STATS_H_ + +/* Tx statistics */ +struct vnic_tx_stats { + u64 tx_frames_ok; + u64 tx_unicast_frames_ok; + u64 tx_multicast_frames_ok; + u64 tx_broadcast_frames_ok; + u64 tx_bytes_ok; + u64 tx_unicast_bytes_ok; + u64 tx_multicast_bytes_ok; + u64 tx_broadcast_bytes_ok; + u64 tx_drops; + u64 tx_errors; + u64 tx_tso; + u64 rsvd[16]; +}; + +/* Rx statistics */ +struct vnic_rx_stats { + u64 rx_frames_ok; + u64 rx_frames_total; + u64 rx_unicast_frames_ok; + u64 rx_multicast_frames_ok; + u64 rx_broadcast_frames_ok; + u64 rx_bytes_ok; + u64 rx_unicast_bytes_ok; + u64 rx_multicast_bytes_ok; + u64 rx_broadcast_bytes_ok; + u64 rx_drop; + u64 rx_no_bufs; + u64 rx_errors; + u64 rx_rss; + u64 rx_crc_errors; + u64 rx_frames_64; + u64 rx_frames_127; + u64 rx_frames_255; + u64 rx_frames_511; + u64 rx_frames_1023; + u64 rx_frames_1518; + u64 rx_frames_to_max; + u64 rsvd[16]; +}; + +struct vnic_stats { + struct vnic_tx_stats tx; + struct vnic_rx_stats rx; +}; + +#endif /* _VNIC_STATS_H_ */ diff --git a/drivers/scsi/fnic/vnic_wq.c b/drivers/scsi/fnic/vnic_wq.c new file mode 100644 index 00000000000..1f9ea790d13 --- /dev/null +++ b/drivers/scsi/fnic/vnic_wq.c @@ -0,0 +1,182 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include "vnic_dev.h" +#include "vnic_wq.h" + +static int vnic_wq_alloc_bufs(struct vnic_wq *wq) +{ + struct vnic_wq_buf *buf; + struct vnic_dev *vdev; + unsigned int i, j, count = wq->ring.desc_count; + unsigned int blks = VNIC_WQ_BUF_BLKS_NEEDED(count); + + vdev = wq->vdev; + + for (i = 0; i < blks; i++) { + wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ, GFP_ATOMIC); + if (!wq->bufs[i]) { + printk(KERN_ERR "Failed to alloc wq_bufs\n"); + return -ENOMEM; + } + } + + for (i = 0; i < blks; i++) { + buf = wq->bufs[i]; + for (j = 0; j < VNIC_WQ_BUF_BLK_ENTRIES; j++) { + buf->index = i * VNIC_WQ_BUF_BLK_ENTRIES + j; + buf->desc = (u8 *)wq->ring.descs + + wq->ring.desc_size * buf->index; + if (buf->index + 1 == count) { + buf->next = wq->bufs[0]; + break; + } else if (j + 1 == VNIC_WQ_BUF_BLK_ENTRIES) { + buf->next = wq->bufs[i + 1]; + } else { + buf->next = buf + 1; + buf++; + } + } + } + + wq->to_use = wq->to_clean = wq->bufs[0]; + + return 0; +} + +void vnic_wq_free(struct vnic_wq *wq) +{ + struct vnic_dev *vdev; + unsigned int i; + + vdev = wq->vdev; + + vnic_dev_free_desc_ring(vdev, &wq->ring); + + for (i = 0; i < VNIC_WQ_BUF_BLKS_MAX; i++) { + kfree(wq->bufs[i]); + wq->bufs[i] = NULL; + } + + wq->ctrl = NULL; + +} + +int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index, + unsigned int desc_count, unsigned int desc_size) +{ + int err; + + wq->index = index; + wq->vdev = vdev; + + wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index); + if (!wq->ctrl) { + printk(KERN_ERR "Failed to hook WQ[%d] resource\n", index); + return -EINVAL; + } + + vnic_wq_disable(wq); + + err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size); + if (err) + return err; + + err = vnic_wq_alloc_bufs(wq); + if (err) { + vnic_wq_free(wq); + return err; + } + + return 0; +} + +void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset) +{ + u64 paddr; + + paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET; + writeq(paddr, &wq->ctrl->ring_base); + iowrite32(wq->ring.desc_count, &wq->ctrl->ring_size); + iowrite32(0, &wq->ctrl->fetch_index); + iowrite32(0, &wq->ctrl->posted_index); + iowrite32(cq_index, &wq->ctrl->cq_index); + iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable); + iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset); + iowrite32(0, &wq->ctrl->error_status); +} + +unsigned int vnic_wq_error_status(struct vnic_wq *wq) +{ + return ioread32(&wq->ctrl->error_status); +} + +void vnic_wq_enable(struct vnic_wq *wq) +{ + iowrite32(1, &wq->ctrl->enable); +} + +int vnic_wq_disable(struct vnic_wq *wq) +{ + unsigned int wait; + + iowrite32(0, &wq->ctrl->enable); + + /* Wait for HW to ACK disable request */ + for (wait = 0; wait < 100; wait++) { + if (!(ioread32(&wq->ctrl->running))) + return 0; + udelay(1); + } + + printk(KERN_ERR "Failed to disable WQ[%d]\n", wq->index); + + return -ETIMEDOUT; +} + +void vnic_wq_clean(struct vnic_wq *wq, + void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf)) +{ + struct vnic_wq_buf *buf; + + BUG_ON(ioread32(&wq->ctrl->enable)); + + buf = wq->to_clean; + + while (vnic_wq_desc_used(wq) > 0) { + + (*buf_clean)(wq, buf); + + buf = wq->to_clean = buf->next; + wq->ring.desc_avail++; + } + + wq->to_use = wq->to_clean = wq->bufs[0]; + + iowrite32(0, &wq->ctrl->fetch_index); + iowrite32(0, &wq->ctrl->posted_index); + iowrite32(0, &wq->ctrl->error_status); + + vnic_dev_clear_desc_ring(&wq->ring); +} diff --git a/drivers/scsi/fnic/vnic_wq.h b/drivers/scsi/fnic/vnic_wq.h new file mode 100644 index 00000000000..5cd094f7928 --- /dev/null +++ b/drivers/scsi/fnic/vnic_wq.h @@ -0,0 +1,175 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_WQ_H_ +#define _VNIC_WQ_H_ + +#include <linux/pci.h> +#include "vnic_dev.h" +#include "vnic_cq.h" + +/* + * These defines avoid symbol clash between fnic and enic (Cisco 10G Eth + * Driver) when both are built with CONFIG options =y + */ +#define vnic_wq_desc_avail fnic_wq_desc_avail +#define vnic_wq_desc_used fnic_wq_desc_used +#define vnic_wq_next_desc fni_cwq_next_desc +#define vnic_wq_post fnic_wq_post +#define vnic_wq_service fnic_wq_service +#define vnic_wq_free fnic_wq_free +#define vnic_wq_alloc fnic_wq_alloc +#define vnic_wq_init fnic_wq_init +#define vnic_wq_error_status fnic_wq_error_status +#define vnic_wq_enable fnic_wq_enable +#define vnic_wq_disable fnic_wq_disable +#define vnic_wq_clean fnic_wq_clean + +/* Work queue control */ +struct vnic_wq_ctrl { + u64 ring_base; /* 0x00 */ + u32 ring_size; /* 0x08 */ + u32 pad0; + u32 posted_index; /* 0x10 */ + u32 pad1; + u32 cq_index; /* 0x18 */ + u32 pad2; + u32 enable; /* 0x20 */ + u32 pad3; + u32 running; /* 0x28 */ + u32 pad4; + u32 fetch_index; /* 0x30 */ + u32 pad5; + u32 dca_value; /* 0x38 */ + u32 pad6; + u32 error_interrupt_enable; /* 0x40 */ + u32 pad7; + u32 error_interrupt_offset; /* 0x48 */ + u32 pad8; + u32 error_status; /* 0x50 */ + u32 pad9; +}; + +struct vnic_wq_buf { + struct vnic_wq_buf *next; + dma_addr_t dma_addr; + void *os_buf; + unsigned int len; + unsigned int index; + int sop; + void *desc; +}; + +/* Break the vnic_wq_buf allocations into blocks of 64 entries */ +#define VNIC_WQ_BUF_BLK_ENTRIES 64 +#define VNIC_WQ_BUF_BLK_SZ \ + (VNIC_WQ_BUF_BLK_ENTRIES * sizeof(struct vnic_wq_buf)) +#define VNIC_WQ_BUF_BLKS_NEEDED(entries) \ + DIV_ROUND_UP(entries, VNIC_WQ_BUF_BLK_ENTRIES) +#define VNIC_WQ_BUF_BLKS_MAX VNIC_WQ_BUF_BLKS_NEEDED(4096) + +struct vnic_wq { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_wq_ctrl __iomem *ctrl; /* memory-mapped */ + struct vnic_dev_ring ring; + struct vnic_wq_buf *bufs[VNIC_WQ_BUF_BLKS_MAX]; + struct vnic_wq_buf *to_use; + struct vnic_wq_buf *to_clean; + unsigned int pkts_outstanding; +}; + +static inline unsigned int vnic_wq_desc_avail(struct vnic_wq *wq) +{ + /* how many does SW own? */ + return wq->ring.desc_avail; +} + +static inline unsigned int vnic_wq_desc_used(struct vnic_wq *wq) +{ + /* how many does HW own? */ + return wq->ring.desc_count - wq->ring.desc_avail - 1; +} + +static inline void *vnic_wq_next_desc(struct vnic_wq *wq) +{ + return wq->to_use->desc; +} + +static inline void vnic_wq_post(struct vnic_wq *wq, + void *os_buf, dma_addr_t dma_addr, + unsigned int len, int sop, int eop) +{ + struct vnic_wq_buf *buf = wq->to_use; + + buf->sop = sop; + buf->os_buf = eop ? os_buf : NULL; + buf->dma_addr = dma_addr; + buf->len = len; + + buf = buf->next; + if (eop) { + /* Adding write memory barrier prevents compiler and/or CPU + * reordering, thus avoiding descriptor posting before + * descriptor is initialized. Otherwise, hardware can read + * stale descriptor fields. + */ + wmb(); + iowrite32(buf->index, &wq->ctrl->posted_index); + } + wq->to_use = buf; + + wq->ring.desc_avail--; +} + +static inline void vnic_wq_service(struct vnic_wq *wq, + struct cq_desc *cq_desc, u16 completed_index, + void (*buf_service)(struct vnic_wq *wq, + struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque), + void *opaque) +{ + struct vnic_wq_buf *buf; + + buf = wq->to_clean; + while (1) { + + (*buf_service)(wq, cq_desc, buf, opaque); + + wq->ring.desc_avail++; + + wq->to_clean = buf->next; + + if (buf->index == completed_index) + break; + + buf = wq->to_clean; + } +} + +void vnic_wq_free(struct vnic_wq *wq); +int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index, + unsigned int desc_count, unsigned int desc_size); +void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset); +unsigned int vnic_wq_error_status(struct vnic_wq *wq); +void vnic_wq_enable(struct vnic_wq *wq); +int vnic_wq_disable(struct vnic_wq *wq); +void vnic_wq_clean(struct vnic_wq *wq, + void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf)); + +#endif /* _VNIC_WQ_H_ */ diff --git a/drivers/scsi/fnic/vnic_wq_copy.c b/drivers/scsi/fnic/vnic_wq_copy.c new file mode 100644 index 00000000000..9eab7e7caf3 --- /dev/null +++ b/drivers/scsi/fnic/vnic_wq_copy.c @@ -0,0 +1,117 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include "vnic_wq_copy.h" + +void vnic_wq_copy_enable(struct vnic_wq_copy *wq) +{ + iowrite32(1, &wq->ctrl->enable); +} + +int vnic_wq_copy_disable(struct vnic_wq_copy *wq) +{ + unsigned int wait; + + iowrite32(0, &wq->ctrl->enable); + + /* Wait for HW to ACK disable request */ + for (wait = 0; wait < 100; wait++) { + if (!(ioread32(&wq->ctrl->running))) + return 0; + udelay(1); + } + + printk(KERN_ERR "Failed to disable Copy WQ[%d]," + " fetch index=%d, posted_index=%d\n", + wq->index, ioread32(&wq->ctrl->fetch_index), + ioread32(&wq->ctrl->posted_index)); + + return -ENODEV; +} + +void vnic_wq_copy_clean(struct vnic_wq_copy *wq, + void (*q_clean)(struct vnic_wq_copy *wq, + struct fcpio_host_req *wq_desc)) +{ + BUG_ON(ioread32(&wq->ctrl->enable)); + + if (vnic_wq_copy_desc_in_use(wq)) + vnic_wq_copy_service(wq, -1, q_clean); + + wq->to_use_index = wq->to_clean_index = 0; + + iowrite32(0, &wq->ctrl->fetch_index); + iowrite32(0, &wq->ctrl->posted_index); + iowrite32(0, &wq->ctrl->error_status); + + vnic_dev_clear_desc_ring(&wq->ring); +} + +void vnic_wq_copy_free(struct vnic_wq_copy *wq) +{ + struct vnic_dev *vdev; + + vdev = wq->vdev; + vnic_dev_free_desc_ring(vdev, &wq->ring); + wq->ctrl = NULL; +} + +int vnic_wq_copy_alloc(struct vnic_dev *vdev, struct vnic_wq_copy *wq, + unsigned int index, unsigned int desc_count, + unsigned int desc_size) +{ + int err; + + wq->index = index; + wq->vdev = vdev; + wq->to_use_index = wq->to_clean_index = 0; + wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index); + if (!wq->ctrl) { + printk(KERN_ERR "Failed to hook COPY WQ[%d] resource\n", index); + return -EINVAL; + } + + vnic_wq_copy_disable(wq); + + err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size); + if (err) + return err; + + return 0; +} + +void vnic_wq_copy_init(struct vnic_wq_copy *wq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset) +{ + u64 paddr; + + paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET; + writeq(paddr, &wq->ctrl->ring_base); + iowrite32(wq->ring.desc_count, &wq->ctrl->ring_size); + iowrite32(0, &wq->ctrl->fetch_index); + iowrite32(0, &wq->ctrl->posted_index); + iowrite32(cq_index, &wq->ctrl->cq_index); + iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable); + iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset); +} + diff --git a/drivers/scsi/fnic/vnic_wq_copy.h b/drivers/scsi/fnic/vnic_wq_copy.h new file mode 100644 index 00000000000..6aff9740c3d --- /dev/null +++ b/drivers/scsi/fnic/vnic_wq_copy.h @@ -0,0 +1,128 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _VNIC_WQ_COPY_H_ +#define _VNIC_WQ_COPY_H_ + +#include <linux/pci.h> +#include "vnic_wq.h" +#include "fcpio.h" + +#define VNIC_WQ_COPY_MAX 1 + +struct vnic_wq_copy { + unsigned int index; + struct vnic_dev *vdev; + struct vnic_wq_ctrl __iomem *ctrl; /* memory-mapped */ + struct vnic_dev_ring ring; + unsigned to_use_index; + unsigned to_clean_index; +}; + +static inline unsigned int vnic_wq_copy_desc_avail(struct vnic_wq_copy *wq) +{ + return wq->ring.desc_avail; +} + +static inline unsigned int vnic_wq_copy_desc_in_use(struct vnic_wq_copy *wq) +{ + return wq->ring.desc_count - 1 - wq->ring.desc_avail; +} + +static inline void *vnic_wq_copy_next_desc(struct vnic_wq_copy *wq) +{ + struct fcpio_host_req *desc = wq->ring.descs; + return &desc[wq->to_use_index]; +} + +static inline void vnic_wq_copy_post(struct vnic_wq_copy *wq) +{ + + ((wq->to_use_index + 1) == wq->ring.desc_count) ? + (wq->to_use_index = 0) : (wq->to_use_index++); + wq->ring.desc_avail--; + + /* Adding write memory barrier prevents compiler and/or CPU + * reordering, thus avoiding descriptor posting before + * descriptor is initialized. Otherwise, hardware can read + * stale descriptor fields. + */ + wmb(); + + iowrite32(wq->to_use_index, &wq->ctrl->posted_index); +} + +static inline void vnic_wq_copy_desc_process(struct vnic_wq_copy *wq, u16 index) +{ + unsigned int cnt; + + if (wq->to_clean_index <= index) + cnt = (index - wq->to_clean_index) + 1; + else + cnt = wq->ring.desc_count - wq->to_clean_index + index + 1; + + wq->to_clean_index = ((index + 1) % wq->ring.desc_count); + wq->ring.desc_avail += cnt; + +} + +static inline void vnic_wq_copy_service(struct vnic_wq_copy *wq, + u16 completed_index, + void (*q_service)(struct vnic_wq_copy *wq, + struct fcpio_host_req *wq_desc)) +{ + struct fcpio_host_req *wq_desc = wq->ring.descs; + unsigned int curr_index; + + while (1) { + + if (q_service) + (*q_service)(wq, &wq_desc[wq->to_clean_index]); + + wq->ring.desc_avail++; + + curr_index = wq->to_clean_index; + + /* increment the to-clean index so that we start + * with an unprocessed index next time we enter the loop + */ + ((wq->to_clean_index + 1) == wq->ring.desc_count) ? + (wq->to_clean_index = 0) : (wq->to_clean_index++); + + if (curr_index == completed_index) + break; + + /* we have cleaned all the entries */ + if ((completed_index == (u16)-1) && + (wq->to_clean_index == wq->to_use_index)) + break; + } +} + +void vnic_wq_copy_enable(struct vnic_wq_copy *wq); +int vnic_wq_copy_disable(struct vnic_wq_copy *wq); +void vnic_wq_copy_free(struct vnic_wq_copy *wq); +int vnic_wq_copy_alloc(struct vnic_dev *vdev, struct vnic_wq_copy *wq, + unsigned int index, unsigned int desc_count, unsigned int desc_size); +void vnic_wq_copy_init(struct vnic_wq_copy *wq, unsigned int cq_index, + unsigned int error_interrupt_enable, + unsigned int error_interrupt_offset); +void vnic_wq_copy_clean(struct vnic_wq_copy *wq, + void (*q_clean)(struct vnic_wq_copy *wq, + struct fcpio_host_req *wq_desc)); + +#endif /* _VNIC_WQ_COPY_H_ */ diff --git a/drivers/scsi/fnic/wq_enet_desc.h b/drivers/scsi/fnic/wq_enet_desc.h new file mode 100644 index 00000000000..b121cbad18b --- /dev/null +++ b/drivers/scsi/fnic/wq_enet_desc.h @@ -0,0 +1,96 @@ +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef _WQ_ENET_DESC_H_ +#define _WQ_ENET_DESC_H_ + +/* Ethernet work queue descriptor: 16B */ +struct wq_enet_desc { + __le64 address; + __le16 length; + __le16 mss_loopback; + __le16 header_length_flags; + __le16 vlan_tag; +}; + +#define WQ_ENET_ADDR_BITS 64 +#define WQ_ENET_LEN_BITS 14 +#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1) +#define WQ_ENET_MSS_BITS 14 +#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1) +#define WQ_ENET_MSS_SHIFT 2 +#define WQ_ENET_LOOPBACK_SHIFT 1 +#define WQ_ENET_HDRLEN_BITS 10 +#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1) +#define WQ_ENET_FLAGS_OM_BITS 2 +#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1) +#define WQ_ENET_FLAGS_EOP_SHIFT 12 +#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13 +#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14 +#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15 + +#define WQ_ENET_OFFLOAD_MODE_CSUM 0 +#define WQ_ENET_OFFLOAD_MODE_RESERVED 1 +#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2 +#define WQ_ENET_OFFLOAD_MODE_TSO 3 + +static inline void wq_enet_desc_enc(struct wq_enet_desc *desc, + u64 address, u16 length, u16 mss, u16 header_length, + u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap, + u8 vlan_tag_insert, u16 vlan_tag, u8 loopback) +{ + desc->address = cpu_to_le64(address); + desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK); + desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) << + WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT); + desc->header_length_flags = cpu_to_le16( + (header_length & WQ_ENET_HDRLEN_MASK) | + (offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS | + (eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT | + (cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT | + (fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT | + (vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT); + desc->vlan_tag = cpu_to_le16(vlan_tag); +} + +static inline void wq_enet_desc_dec(struct wq_enet_desc *desc, + u64 *address, u16 *length, u16 *mss, u16 *header_length, + u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap, + u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback) +{ + *address = le64_to_cpu(desc->address); + *length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK; + *mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) & + WQ_ENET_MSS_MASK; + *loopback = (u8)((le16_to_cpu(desc->mss_loopback) >> + WQ_ENET_LOOPBACK_SHIFT) & 1); + *header_length = le16_to_cpu(desc->header_length_flags) & + WQ_ENET_HDRLEN_MASK; + *offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK); + *eop = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_FLAGS_EOP_SHIFT) & 1); + *cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1); + *fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1); + *vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >> + WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1); + *vlan_tag = le16_to_cpu(desc->vlan_tag); +} + +#endif /* _WQ_ENET_DESC_H_ */ diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h index babd4cc0cb2..36b1d1052ba 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.h +++ b/drivers/scsi/mpt2sas/mpt2sas_base.h @@ -69,7 +69,7 @@ #define MPT2SAS_AUTHOR "LSI Corporation <DL-MPTFusionLinux@lsi.com>" #define MPT2SAS_DESCRIPTION "LSI MPT Fusion SAS 2.0 Device Driver" #define MPT2SAS_DRIVER_VERSION "01.100.02.00" -#define MPT2SAS_MAJOR_VERSION 00 +#define MPT2SAS_MAJOR_VERSION 01 #define MPT2SAS_MINOR_VERSION 100 #define MPT2SAS_BUILD_VERSION 02 #define MPT2SAS_RELEASE_VERSION 00 diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 6f51ca485f3..e2b50d8f57a 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -425,6 +425,7 @@ static struct scsi_target *scsi_alloc_target(struct device *parent, INIT_LIST_HEAD(&starget->devices); starget->state = STARGET_CREATED; starget->scsi_level = SCSI_2; + starget->max_target_blocked = SCSI_DEFAULT_TARGET_BLOCKED; retry: spin_lock_irqsave(shost->host_lock, flags); diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index 09479545529..0a2ce7b6325 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -357,7 +357,7 @@ int iscsi_session_chkready(struct iscsi_cls_session *session) err = 0; break; case ISCSI_SESSION_FAILED: - err = DID_TRANSPORT_DISRUPTED << 16; + err = DID_IMM_RETRY << 16; break; case ISCSI_SESSION_FREE: err = DID_TRANSPORT_FAILFAST << 16; diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c index e3a5ad5ef1d..cdc049d4350 100644 --- a/drivers/serial/amba-pl010.c +++ b/drivers/serial/amba-pl010.c @@ -665,7 +665,7 @@ static struct uart_driver amba_reg = { .cons = AMBA_CONSOLE, }; -static int pl010_probe(struct amba_device *dev, void *id) +static int pl010_probe(struct amba_device *dev, struct amba_id *id) { struct uart_amba_port *uap; void __iomem *base; diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c index 8b2b9700f3e..88fdac51b6c 100644 --- a/drivers/serial/amba-pl011.c +++ b/drivers/serial/amba-pl011.c @@ -729,7 +729,7 @@ static struct uart_driver amba_reg = { .cons = AMBA_CONSOLE, }; -static int pl011_probe(struct amba_device *dev, void *id) +static int pl011_probe(struct amba_device *dev, struct amba_id *id) { struct uart_amba_port *uap; void __iomem *base; diff --git a/drivers/serial/icom.c b/drivers/serial/icom.c index 6579e2be1dd..a461b3b2c72 100644 --- a/drivers/serial/icom.c +++ b/drivers/serial/icom.c @@ -1472,8 +1472,8 @@ static void icom_remove_adapter(struct icom_adapter *icom_adapter) free_irq(icom_adapter->pci_dev->irq, (void *) icom_adapter); iounmap(icom_adapter->base_addr); - icom_free_adapter(icom_adapter); pci_release_regions(icom_adapter->pci_dev); + icom_free_adapter(icom_adapter); } static void icom_kref_release(struct kref *kref) diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c index 61050ab1412..d1f80bac54f 100644 --- a/drivers/video/amba-clcd.c +++ b/drivers/video/amba-clcd.c @@ -437,7 +437,7 @@ static int clcdfb_register(struct clcd_fb *fb) return ret; } -static int clcdfb_probe(struct amba_device *dev, void *id) +static int clcdfb_probe(struct amba_device *dev, struct amba_id *id) { struct clcd_board *board = dev->dev.platform_data; struct clcd_fb *fb; diff --git a/drivers/video/omap/dispc.c b/drivers/video/omap/dispc.c index dfb72f5e4c9..148cbcc3960 100644 --- a/drivers/video/omap/dispc.c +++ b/drivers/video/omap/dispc.c @@ -880,20 +880,22 @@ static irqreturn_t omap_dispc_irq_handler(int irq, void *dev) static int get_dss_clocks(void) { - if (IS_ERR((dispc.dss_ick = clk_get(dispc.fbdev->dev, "dss_ick")))) { - dev_err(dispc.fbdev->dev, "can't get dss_ick\n"); + dispc.dss_ick = clk_get(dispc.fbdev->dev, "ick"); + if (IS_ERR(dispc.dss_ick)) { + dev_err(dispc.fbdev->dev, "can't get ick\n"); return PTR_ERR(dispc.dss_ick); } - if (IS_ERR((dispc.dss1_fck = clk_get(dispc.fbdev->dev, "dss1_fck")))) { + dispc.dss1_fck = clk_get(dispc.fbdev->dev, "dss1_fck"); + if (IS_ERR(dispc.dss1_fck)) { dev_err(dispc.fbdev->dev, "can't get dss1_fck\n"); clk_put(dispc.dss_ick); return PTR_ERR(dispc.dss1_fck); } - if (IS_ERR((dispc.dss_54m_fck = - clk_get(dispc.fbdev->dev, "dss_54m_fck")))) { - dev_err(dispc.fbdev->dev, "can't get dss_54m_fck\n"); + dispc.dss_54m_fck = clk_get(dispc.fbdev->dev, "tv_fck"); + if (IS_ERR(dispc.dss_54m_fck)) { + dev_err(dispc.fbdev->dev, "can't get tv_fck\n"); clk_put(dispc.dss_ick); clk_put(dispc.dss1_fck); return PTR_ERR(dispc.dss_54m_fck); diff --git a/drivers/video/omap/rfbi.c b/drivers/video/omap/rfbi.c index a13c8dcad2a..9332d6ca645 100644 --- a/drivers/video/omap/rfbi.c +++ b/drivers/video/omap/rfbi.c @@ -83,12 +83,14 @@ static inline u32 rfbi_read_reg(int idx) static int rfbi_get_clocks(void) { - if (IS_ERR((rfbi.dss_ick = clk_get(rfbi.fbdev->dev, "dss_ick")))) { - dev_err(rfbi.fbdev->dev, "can't get dss_ick\n"); + rfbi.dss_ick = clk_get(rfbi.fbdev->dev, "ick"); + if (IS_ERR(rfbi.dss_ick)) { + dev_err(rfbi.fbdev->dev, "can't get ick\n"); return PTR_ERR(rfbi.dss_ick); } - if (IS_ERR((rfbi.dss1_fck = clk_get(rfbi.fbdev->dev, "dss1_fck")))) { + rfbi.dss1_fck = clk_get(rfbi.fbdev->dev, "dss1_fck"); + if (IS_ERR(rfbi.dss1_fck)) { dev_err(rfbi.fbdev->dev, "can't get dss1_fck\n"); clk_put(rfbi.dss_ick); return PTR_ERR(rfbi.dss1_fck); diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c index 92ea0ab44ce..f10d2fbeda0 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -47,6 +47,7 @@ struct sh_mobile_lcdc_priv { #endif unsigned long lddckr; struct sh_mobile_lcdc_chan ch[2]; + int started; }; /* shared registers */ @@ -451,6 +452,7 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) /* start the lcdc */ sh_mobile_lcdc_start_stop(priv, 1); + priv->started = 1; /* tell the board code to enable the panel */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { @@ -493,7 +495,10 @@ static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) } /* stop the lcdc */ - sh_mobile_lcdc_start_stop(priv, 0); + if (priv->started) { + sh_mobile_lcdc_start_stop(priv, 0); + priv->started = 0; + } /* stop clocks */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) |