diff options
Diffstat (limited to 'drivers/scsi/aic7xxx/aic79xx_osm.c')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic79xx_osm.c | 4570 |
1 files changed, 1171 insertions, 3399 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c index 329cb233133..6b6d4e28779 100644 --- a/drivers/scsi/aic7xxx/aic79xx_osm.c +++ b/drivers/scsi/aic7xxx/aic79xx_osm.c @@ -46,32 +46,14 @@ #include "aic79xx_inline.h" #include <scsi/scsicam.h> -/* - * Include aiclib.c as part of our - * "module dependencies are hard" work around. - */ -#include "aiclib.c" +static struct scsi_transport_template *ahd_linux_transport_template = NULL; #include <linux/init.h> /* __setup */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) -#include "sd.h" /* For geometry detection */ -#endif - #include <linux/mm.h> /* For fetching system memory size */ +#include <linux/blkdev.h> /* For block_size() */ #include <linux/delay.h> /* For ssleep/msleep */ /* - * Lock protecting manipulation of the ahd softc list. - */ -spinlock_t ahd_list_spinlock; - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) -/* For dynamic sglist size calculation. */ -u_int ahd_linux_nseg; -#endif - -/* * Bucket size for counting good commands in between bad ones. */ #define AHD_LINUX_ERR_THRESH 1000 @@ -188,71 +170,6 @@ static adapter_tag_info_t aic79xx_tag_info[] = }; /* - * By default, read streaming is disabled. In theory, - * read streaming should enhance performance, but early - * U320 drive firmware actually performs slower with - * read streaming enabled. - */ -#ifdef CONFIG_AIC79XX_ENABLE_RD_STRM -#define AIC79XX_CONFIGED_RD_STRM 0xFFFF -#else -#define AIC79XX_CONFIGED_RD_STRM 0 -#endif - -static uint16_t aic79xx_rd_strm_info[] = -{ - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM, - AIC79XX_CONFIGED_RD_STRM -}; - -/* - * DV option: - * - * positive value = DV Enabled - * zero = DV Disabled - * negative value = DV Default for adapter type/seeprom - */ -#ifdef CONFIG_AIC79XX_DV_SETTING -#define AIC79XX_CONFIGED_DV CONFIG_AIC79XX_DV_SETTING -#else -#define AIC79XX_CONFIGED_DV -1 -#endif - -static int8_t aic79xx_dv_settings[] = -{ - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV, - AIC79XX_CONFIGED_DV -}; - -/* * The I/O cell on the chip is very configurable in respect to its analog * characteristics. Set the defaults here; they can be overriden with * the proper insmod parameters. @@ -375,13 +292,6 @@ static uint32_t aic79xx_pci_parity = ~0; uint32_t aic79xx_allow_memio = ~0; /* - * aic79xx_detect() has been run, so register all device arrivals - * immediately with the system rather than deferring to the sorted - * attachment performed by aic79xx_detect(). - */ -int aic79xx_detect_complete; - -/* * So that we can set how long each device is given as a selection timeout. * The table of values goes like this: * 0 - 256ms @@ -412,7 +322,7 @@ MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>"); MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION(AIC79XX_DRIVER_VERSION); -module_param(aic79xx, charp, 0); +module_param(aic79xx, charp, 0444); MODULE_PARM_DESC(aic79xx, "period delimited, options string.\n" " verbose Enable verbose/diagnostic logging\n" @@ -427,8 +337,6 @@ MODULE_PARM_DESC(aic79xx, " reverse_scan Sort PCI devices highest Bus/Slot to lowest\n" " tag_info:<tag_str> Set per-target tag depth\n" " global_tag_depth:<int> Global tag depth for all targets on all buses\n" -" rd_strm:<rd_strm_masks> Set per-target read streaming setting.\n" -" dv:<dv_settings> Set per-controller Domain Validation Setting.\n" " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n" " precomp:<pcomp_list> Set the signal precompensation (0-7).\n" " amplitude:<int> Set the signal amplitude (0-7).\n" @@ -441,249 +349,35 @@ MODULE_PARM_DESC(aic79xx, " Shorten the selection timeout to 128ms\n" "\n" " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n" -"\n" -" Sample /etc/modprobe.conf line:\n" -" Change Read Streaming for Controller's 2 and 3\n" -"\n" -" options aic79xx 'aic79xx=rd_strm:{..0xFFF0.0xC0F0}'"); +"\n"); static void ahd_linux_handle_scsi_status(struct ahd_softc *, - struct ahd_linux_device *, + struct scsi_device *, struct scb *); static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, - Scsi_Cmnd *cmd); -static void ahd_linux_filter_inquiry(struct ahd_softc *ahd, - struct ahd_devinfo *devinfo); -static void ahd_linux_dev_timed_unfreeze(u_long arg); + struct scsi_cmnd *cmd); static void ahd_linux_sem_timeout(u_long arg); +static int ahd_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag); static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd); -static void ahd_linux_size_nseg(void); -static void ahd_linux_thread_run_complete_queue(struct ahd_softc *ahd); -static void ahd_linux_start_dv(struct ahd_softc *ahd); -static void ahd_linux_dv_timeout(struct scsi_cmnd *cmd); -static int ahd_linux_dv_thread(void *data); -static void ahd_linux_kill_dv_thread(struct ahd_softc *ahd); -static void ahd_linux_dv_target(struct ahd_softc *ahd, u_int target); -static void ahd_linux_dv_transition(struct ahd_softc *ahd, - struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, - struct ahd_linux_target *targ); -static void ahd_linux_dv_fill_cmd(struct ahd_softc *ahd, - struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo); -static void ahd_linux_dv_inq(struct ahd_softc *ahd, - struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, - struct ahd_linux_target *targ, - u_int request_length); -static void ahd_linux_dv_tur(struct ahd_softc *ahd, - struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo); -static void ahd_linux_dv_rebd(struct ahd_softc *ahd, - struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, - struct ahd_linux_target *targ); -static void ahd_linux_dv_web(struct ahd_softc *ahd, - struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, - struct ahd_linux_target *targ); -static void ahd_linux_dv_reb(struct ahd_softc *ahd, - struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, - struct ahd_linux_target *targ); -static void ahd_linux_dv_su(struct ahd_softc *ahd, - struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, - struct ahd_linux_target *targ); -static int ahd_linux_fallback(struct ahd_softc *ahd, - struct ahd_devinfo *devinfo); -static __inline int ahd_linux_dv_fallback(struct ahd_softc *ahd, - struct ahd_devinfo *devinfo); -static void ahd_linux_dv_complete(Scsi_Cmnd *cmd); -static void ahd_linux_generate_dv_pattern(struct ahd_linux_target *targ); static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo); -static u_int ahd_linux_user_dv_setting(struct ahd_softc *ahd); -static void ahd_linux_setup_user_rd_strm_settings(struct ahd_softc *ahd); -static void ahd_linux_device_queue_depth(struct ahd_softc *ahd, - struct ahd_linux_device *dev); -static struct ahd_linux_target* ahd_linux_alloc_target(struct ahd_softc*, - u_int, u_int); -static void ahd_linux_free_target(struct ahd_softc*, - struct ahd_linux_target*); -static struct ahd_linux_device* ahd_linux_alloc_device(struct ahd_softc*, - struct ahd_linux_target*, - u_int); -static void ahd_linux_free_device(struct ahd_softc*, - struct ahd_linux_device*); -static void ahd_linux_run_device_queue(struct ahd_softc*, - struct ahd_linux_device*); +static void ahd_linux_device_queue_depth(struct scsi_device *); +static int ahd_linux_run_command(struct ahd_softc*, + struct ahd_linux_device *, + struct scsi_cmnd *); static void ahd_linux_setup_tag_info_global(char *p); -static aic_option_callback_t ahd_linux_setup_tag_info; -static aic_option_callback_t ahd_linux_setup_rd_strm_info; -static aic_option_callback_t ahd_linux_setup_dv; -static aic_option_callback_t ahd_linux_setup_iocell_info; -static int ahd_linux_next_unit(void); -static void ahd_runq_tasklet(unsigned long data); -static int aic79xx_setup(char *c); - -/****************************** Inlines ***************************************/ -static __inline void ahd_schedule_completeq(struct ahd_softc *ahd); -static __inline void ahd_schedule_runq(struct ahd_softc *ahd); -static __inline void ahd_setup_runq_tasklet(struct ahd_softc *ahd); -static __inline void ahd_teardown_runq_tasklet(struct ahd_softc *ahd); -static __inline struct ahd_linux_device* - ahd_linux_get_device(struct ahd_softc *ahd, u_int channel, - u_int target, u_int lun, int alloc); -static struct ahd_cmd *ahd_linux_run_complete_queue(struct ahd_softc *ahd); -static __inline void ahd_linux_check_device_queue(struct ahd_softc *ahd, - struct ahd_linux_device *dev); -static __inline struct ahd_linux_device * - ahd_linux_next_device_to_run(struct ahd_softc *ahd); -static __inline void ahd_linux_run_device_queues(struct ahd_softc *ahd); -static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*); - -static __inline void -ahd_schedule_completeq(struct ahd_softc *ahd) -{ - if ((ahd->platform_data->flags & AHD_RUN_CMPLT_Q_TIMER) == 0) { - ahd->platform_data->flags |= AHD_RUN_CMPLT_Q_TIMER; - ahd->platform_data->completeq_timer.expires = jiffies; - add_timer(&ahd->platform_data->completeq_timer); - } -} - -/* - * Must be called with our lock held. - */ -static __inline void -ahd_schedule_runq(struct ahd_softc *ahd) -{ - tasklet_schedule(&ahd->platform_data->runq_tasklet); -} - -static __inline -void ahd_setup_runq_tasklet(struct ahd_softc *ahd) -{ - tasklet_init(&ahd->platform_data->runq_tasklet, ahd_runq_tasklet, - (unsigned long)ahd); -} +static int aic79xx_setup(char *c); -static __inline void -ahd_teardown_runq_tasklet(struct ahd_softc *ahd) -{ - tasklet_kill(&ahd->platform_data->runq_tasklet); -} +static int ahd_linux_unit; -static __inline struct ahd_linux_device* -ahd_linux_get_device(struct ahd_softc *ahd, u_int channel, u_int target, - u_int lun, int alloc) -{ - struct ahd_linux_target *targ; - struct ahd_linux_device *dev; - u_int target_offset; - target_offset = target; - if (channel != 0) - target_offset += 8; - targ = ahd->platform_data->targets[target_offset]; - if (targ == NULL) { - if (alloc != 0) { - targ = ahd_linux_alloc_target(ahd, channel, target); - if (targ == NULL) - return (NULL); - } else - return (NULL); - } - dev = targ->devices[lun]; - if (dev == NULL && alloc != 0) - dev = ahd_linux_alloc_device(ahd, targ, lun); - return (dev); -} - -#define AHD_LINUX_MAX_RETURNED_ERRORS 4 -static struct ahd_cmd * -ahd_linux_run_complete_queue(struct ahd_softc *ahd) -{ - struct ahd_cmd *acmd; - u_long done_flags; - int with_errors; - - with_errors = 0; - ahd_done_lock(ahd, &done_flags); - while ((acmd = TAILQ_FIRST(&ahd->platform_data->completeq)) != NULL) { - Scsi_Cmnd *cmd; - - if (with_errors > AHD_LINUX_MAX_RETURNED_ERRORS) { - /* - * Linux uses stack recursion to requeue - * commands that need to be retried. Avoid - * blowing out the stack by "spoon feeding" - * commands that completed with error back - * the operating system in case they are going - * to be retried. "ick" - */ - ahd_schedule_completeq(ahd); - break; - } - TAILQ_REMOVE(&ahd->platform_data->completeq, - acmd, acmd_links.tqe); - cmd = &acmd_scsi_cmd(acmd); - cmd->host_scribble = NULL; - if (ahd_cmd_get_transaction_status(cmd) != DID_OK - || (cmd->result & 0xFF) != SCSI_STATUS_OK) - with_errors++; - - cmd->scsi_done(cmd); - } - ahd_done_unlock(ahd, &done_flags); - return (acmd); -} - -static __inline void -ahd_linux_check_device_queue(struct ahd_softc *ahd, - struct ahd_linux_device *dev) -{ - if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) != 0 - && dev->active == 0) { - dev->flags &= ~AHD_DEV_FREEZE_TIL_EMPTY; - dev->qfrozen--; - } - - if (TAILQ_FIRST(&dev->busyq) == NULL - || dev->openings == 0 || dev->qfrozen != 0) - return; - - ahd_linux_run_device_queue(ahd, dev); -} - -static __inline struct ahd_linux_device * -ahd_linux_next_device_to_run(struct ahd_softc *ahd) -{ - - if ((ahd->flags & AHD_RESOURCE_SHORTAGE) != 0 - || (ahd->platform_data->qfrozen != 0 - && AHD_DV_SIMQ_FROZEN(ahd) == 0)) - return (NULL); - return (TAILQ_FIRST(&ahd->platform_data->device_runq)); -} - -static __inline void -ahd_linux_run_device_queues(struct ahd_softc *ahd) -{ - struct ahd_linux_device *dev; - - while ((dev = ahd_linux_next_device_to_run(ahd)) != NULL) { - TAILQ_REMOVE(&ahd->platform_data->device_runq, dev, links); - dev->flags &= ~AHD_DEV_ON_RUN_LIST; - ahd_linux_check_device_queue(ahd, dev); - } -} +/****************************** Inlines ***************************************/ +static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*); static __inline void ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb) { - Scsi_Cmnd *cmd; + struct scsi_cmnd *cmd; int direction; cmd = scb->io_ctx; @@ -705,197 +399,6 @@ ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb) #define BUILD_SCSIID(ahd, cmd) \ ((((cmd)->device->id << TID_SHIFT) & TID) | (ahd)->our_id) -/************************ Host template entry points *************************/ -static int ahd_linux_detect(Scsi_Host_Template *); -static const char *ahd_linux_info(struct Scsi_Host *); -static int ahd_linux_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *)); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) -static int ahd_linux_slave_alloc(Scsi_Device *); -static int ahd_linux_slave_configure(Scsi_Device *); -static void ahd_linux_slave_destroy(Scsi_Device *); -#if defined(__i386__) -static int ahd_linux_biosparam(struct scsi_device*, - struct block_device*, sector_t, int[]); -#endif -#else -static int ahd_linux_release(struct Scsi_Host *); -static void ahd_linux_select_queue_depth(struct Scsi_Host *host, - Scsi_Device *scsi_devs); -#if defined(__i386__) -static int ahd_linux_biosparam(Disk *, kdev_t, int[]); -#endif -#endif -static int ahd_linux_bus_reset(Scsi_Cmnd *); -static int ahd_linux_dev_reset(Scsi_Cmnd *); -static int ahd_linux_abort(Scsi_Cmnd *); - -/* - * Calculate a safe value for AHD_NSEG (as expressed through ahd_linux_nseg). - * - * In pre-2.5.X... - * The midlayer allocates an S/G array dynamically when a command is issued - * using SCSI malloc. This array, which is in an OS dependent format that - * must later be copied to our private S/G list, is sized to house just the - * number of segments needed for the current transfer. Since the code that - * sizes the SCSI malloc pool does not take into consideration fragmentation - * of the pool, executing transactions numbering just a fraction of our - * concurrent transaction limit with SG list lengths aproaching AHC_NSEG will - * quickly depleat the SCSI malloc pool of usable space. Unfortunately, the - * mid-layer does not properly handle this scsi malloc failures for the S/G - * array and the result can be a lockup of the I/O subsystem. We try to size - * our S/G list so that it satisfies our drivers allocation requirements in - * addition to avoiding fragmentation of the SCSI malloc pool. - */ -static void -ahd_linux_size_nseg(void) -{ -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - u_int cur_size; - u_int best_size; - - /* - * The SCSI allocator rounds to the nearest 512 bytes - * an cannot allocate across a page boundary. Our algorithm - * is to start at 1K of scsi malloc space per-command and - * loop through all factors of the PAGE_SIZE and pick the best. - */ - best_size = 0; - for (cur_size = 1024; cur_size <= PAGE_SIZE; cur_size *= 2) { - u_int nseg; - - nseg = cur_size / sizeof(struct scatterlist); - if (nseg < AHD_LINUX_MIN_NSEG) - continue; - - if (best_size == 0) { - best_size = cur_size; - ahd_linux_nseg = nseg; - } else { - u_int best_rem; - u_int cur_rem; - - /* - * Compare the traits of the current "best_size" - * with the current size to determine if the - * current size is a better size. - */ - best_rem = best_size % sizeof(struct scatterlist); - cur_rem = cur_size % sizeof(struct scatterlist); - if (cur_rem < best_rem) { - best_size = cur_size; - ahd_linux_nseg = nseg; - } - } - } -#endif -} - -/* - * Try to detect an Adaptec 79XX controller. - */ -static int -ahd_linux_detect(Scsi_Host_Template *template) -{ - struct ahd_softc *ahd; - int found; - int error = 0; - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - /* - * It is a bug that the upper layer takes - * this lock just prior to calling us. - */ - spin_unlock_irq(&io_request_lock); -#endif - - /* - * Sanity checking of Linux SCSI data structures so - * that some of our hacks^H^H^H^H^Hassumptions aren't - * violated. - */ - if (offsetof(struct ahd_cmd_internal, end) - > offsetof(struct scsi_cmnd, host_scribble)) { - printf("ahd_linux_detect: SCSI data structures changed.\n"); - printf("ahd_linux_detect: Unable to attach\n"); - return (0); - } - /* - * Determine an appropriate size for our Scatter Gatther lists. - */ - ahd_linux_size_nseg(); -#ifdef MODULE - /* - * If we've been passed any parameters, process them now. - */ - if (aic79xx) - aic79xx_setup(aic79xx); -#endif - - template->proc_name = "aic79xx"; - - /* - * Initialize our softc list lock prior to - * probing for any adapters. - */ - ahd_list_lockinit(); - -#ifdef CONFIG_PCI - error = ahd_linux_pci_init(); - if (error) - return error; -#endif - - /* - * Register with the SCSI layer all - * controllers we've found. - */ - found = 0; - TAILQ_FOREACH(ahd, &ahd_tailq, links) { - - if (ahd_linux_register_host(ahd, template) == 0) - found++; - } -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - spin_lock_irq(&io_request_lock); -#endif - aic79xx_detect_complete++; - return 0; -} - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) -/* - * Free the passed in Scsi_Host memory structures prior to unloading the - * module. - */ -static int -ahd_linux_release(struct Scsi_Host * host) -{ - struct ahd_softc *ahd; - u_long l; - - ahd_list_lock(&l); - if (host != NULL) { - - /* - * We should be able to just perform - * the free directly, but check our - * list for extra sanity. - */ - ahd = ahd_find_softc(*(struct ahd_softc **)host->hostdata); - if (ahd != NULL) { - u_long s; - - ahd_lock(ahd, &s); - ahd_intr_enable(ahd, FALSE); - ahd_unlock(ahd, &s); - ahd_free(ahd); - } - } - ahd_list_unlock(&l); - return (0); -} -#endif - /* * Return a string describing the driver. */ @@ -928,220 +431,177 @@ ahd_linux_info(struct Scsi_Host *host) * Queue an SCB to the controller. */ static int -ahd_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *)) +ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *)) { struct ahd_softc *ahd; - struct ahd_linux_device *dev; - u_long flags; + struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device); ahd = *(struct ahd_softc **)cmd->device->host->hostdata; /* - * Save the callback on completion function. - */ - cmd->scsi_done = scsi_done; - - ahd_midlayer_entrypoint_lock(ahd, &flags); - - /* * Close the race of a command that was in the process of * being queued to us just as our simq was frozen. Let * DV commands through so long as we are only frozen to * perform DV. */ - if (ahd->platform_data->qfrozen != 0 - && AHD_DV_CMD(cmd) == 0) { - - ahd_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ); - ahd_linux_queue_cmd_complete(ahd, cmd); - ahd_schedule_completeq(ahd); - ahd_midlayer_entrypoint_unlock(ahd, &flags); - return (0); - } - dev = ahd_linux_get_device(ahd, cmd->device->channel, - cmd->device->id, cmd->device->lun, - /*alloc*/TRUE); - if (dev == NULL) { - ahd_cmd_set_transaction_status(cmd, CAM_RESRC_UNAVAIL); - ahd_linux_queue_cmd_complete(ahd, cmd); - ahd_schedule_completeq(ahd); - ahd_midlayer_entrypoint_unlock(ahd, &flags); - printf("%s: aic79xx_linux_queue - Unable to allocate device!\n", - ahd_name(ahd)); - return (0); + if (ahd->platform_data->qfrozen != 0) { + printf("%s: queue frozen\n", ahd_name(ahd)); + + return SCSI_MLQUEUE_HOST_BUSY; } - if (cmd->cmd_len > MAX_CDB_LEN) - return (-EINVAL); + + /* + * Save the callback on completion function. + */ + cmd->scsi_done = scsi_done; + cmd->result = CAM_REQ_INPROG << 16; - TAILQ_INSERT_TAIL(&dev->busyq, (struct ahd_cmd *)cmd, acmd_links.tqe); - if ((dev->flags & AHD_DEV_ON_RUN_LIST) == 0) { - TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq, dev, links); - dev->flags |= AHD_DEV_ON_RUN_LIST; - ahd_linux_run_device_queues(ahd); - } - ahd_midlayer_entrypoint_unlock(ahd, &flags); - return (0); + + return ahd_linux_run_command(ahd, dev, cmd); +} + +static inline struct scsi_target ** +ahd_linux_target_in_softc(struct scsi_target *starget) +{ + struct ahd_softc *ahd = + *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); + unsigned int target_offset; + + target_offset = starget->id; + if (starget->channel != 0) + target_offset += 8; + + return &ahd->platform_data->starget[target_offset]; } -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) static int -ahd_linux_slave_alloc(Scsi_Device *device) +ahd_linux_target_alloc(struct scsi_target *starget) { - struct ahd_softc *ahd; + struct ahd_softc *ahd = + *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); + unsigned long flags; + struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); + struct ahd_linux_target *targ = scsi_transport_target_data(starget); + struct ahd_devinfo devinfo; + struct ahd_initiator_tinfo *tinfo; + struct ahd_tmode_tstate *tstate; + char channel = starget->channel + 'A'; - ahd = *((struct ahd_softc **)device->host->hostdata); - if (bootverbose) - printf("%s: Slave Alloc %d\n", ahd_name(ahd), device->id); - return (0); + ahd_lock(ahd, &flags); + + BUG_ON(*ahd_targp != NULL); + + *ahd_targp = starget; + memset(targ, 0, sizeof(*targ)); + + tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, + starget->id, &tstate); + ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id, + CAM_LUN_WILDCARD, channel, + ROLE_INITIATOR); + spi_min_period(starget) = AHD_SYNCRATE_MAX; /* We can do U320 */ + if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0) + spi_max_offset(starget) = MAX_OFFSET_PACED_BUG; + else + spi_max_offset(starget) = MAX_OFFSET_PACED; + spi_max_width(starget) = ahd->features & AHD_WIDE; + + ahd_set_syncrate(ahd, &devinfo, 0, 0, 0, + AHD_TRANS_GOAL, /*paused*/FALSE); + ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, + AHD_TRANS_GOAL, /*paused*/FALSE); + ahd_unlock(ahd, &flags); + + return 0; +} + +static void +ahd_linux_target_destroy(struct scsi_target *starget) +{ + struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); + + *ahd_targp = NULL; } static int -ahd_linux_slave_configure(Scsi_Device *device) +ahd_linux_slave_alloc(struct scsi_device *sdev) { - struct ahd_softc *ahd; - struct ahd_linux_device *dev; - u_long flags; + struct ahd_softc *ahd = + *((struct ahd_softc **)sdev->host->hostdata); + struct scsi_target *starget = sdev->sdev_target; + struct ahd_linux_target *targ = scsi_transport_target_data(starget); + struct ahd_linux_device *dev; - ahd = *((struct ahd_softc **)device->host->hostdata); if (bootverbose) - printf("%s: Slave Configure %d\n", ahd_name(ahd), device->id); - ahd_midlayer_entrypoint_lock(ahd, &flags); + printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id); + + BUG_ON(targ->sdev[sdev->lun] != NULL); + + dev = scsi_transport_device_data(sdev); + memset(dev, 0, sizeof(*dev)); + /* - * Since Linux has attached to the device, configure - * it so we don't free and allocate the device - * structure on every command. + * We start out life using untagged + * transactions of which we allow one. */ - dev = ahd_linux_get_device(ahd, device->channel, - device->id, device->lun, - /*alloc*/TRUE); - if (dev != NULL) { - dev->flags &= ~AHD_DEV_UNCONFIGURED; - dev->flags |= AHD_DEV_SLAVE_CONFIGURED; - dev->scsi_device = device; - ahd_linux_device_queue_depth(ahd, dev); - } - ahd_midlayer_entrypoint_unlock(ahd, &flags); + dev->openings = 1; + + /* + * Set maxtags to 0. This will be changed if we + * later determine that we are dealing with + * a tagged queuing capable device. + */ + dev->maxtags = 0; + + targ->sdev[sdev->lun] = sdev; + return (0); } -static void -ahd_linux_slave_destroy(Scsi_Device *device) +static int +ahd_linux_slave_configure(struct scsi_device *sdev) { struct ahd_softc *ahd; - struct ahd_linux_device *dev; - u_long flags; - ahd = *((struct ahd_softc **)device->host->hostdata); + ahd = *((struct ahd_softc **)sdev->host->hostdata); if (bootverbose) - printf("%s: Slave Destroy %d\n", ahd_name(ahd), device->id); - ahd_midlayer_entrypoint_lock(ahd, &flags); - dev = ahd_linux_get_device(ahd, device->channel, - device->id, device->lun, - /*alloc*/FALSE); + printf("%s: Slave Configure %d\n", ahd_name(ahd), sdev->id); - /* - * Filter out "silly" deletions of real devices by only - * deleting devices that have had slave_configure() - * called on them. All other devices that have not - * been configured will automatically be deleted by - * the refcounting process. - */ - if (dev != NULL - && (dev->flags & AHD_DEV_SLAVE_CONFIGURED) != 0) { - dev->flags |= AHD_DEV_UNCONFIGURED; - if (TAILQ_EMPTY(&dev->busyq) - && dev->active == 0 - && (dev->flags & AHD_DEV_TIMER_ACTIVE) == 0) - ahd_linux_free_device(ahd, dev); - } - ahd_midlayer_entrypoint_unlock(ahd, &flags); + ahd_linux_device_queue_depth(sdev); + + /* Initial Domain Validation */ + if (!spi_initial_dv(sdev->sdev_target)) + spi_dv_device(sdev); + + return 0; } -#else -/* - * Sets the queue depth for each SCSI device hanging - * off the input host adapter. - */ + static void -ahd_linux_select_queue_depth(struct Scsi_Host * host, - Scsi_Device * scsi_devs) +ahd_linux_slave_destroy(struct scsi_device *sdev) { - Scsi_Device *device; - Scsi_Device *ldev; struct ahd_softc *ahd; - u_long flags; + struct ahd_linux_device *dev = scsi_transport_device_data(sdev); + struct ahd_linux_target *targ = scsi_transport_target_data(sdev->sdev_target); - ahd = *((struct ahd_softc **)host->hostdata); - ahd_lock(ahd, &flags); - for (device = scsi_devs; device != NULL; device = device->next) { + ahd = *((struct ahd_softc **)sdev->host->hostdata); + if (bootverbose) + printf("%s: Slave Destroy %d\n", ahd_name(ahd), sdev->id); - /* - * Watch out for duplicate devices. This works around - * some quirks in how the SCSI scanning code does its - * device management. - */ - for (ldev = scsi_devs; ldev != device; ldev = ldev->next) { - if (ldev->host == device->host - && ldev->channel == device->channel - && ldev->id == device->id - && ldev->lun == device->lun) - break; - } - /* Skip duplicate. */ - if (ldev != device) - continue; + BUG_ON(dev->active); - if (device->host == host) { - struct ahd_linux_device *dev; + targ->sdev[sdev->lun] = NULL; - /* - * Since Linux has attached to the device, configure - * it so we don't free and allocate the device - * structure on every command. - */ - dev = ahd_linux_get_device(ahd, device->channel, - device->id, device->lun, - /*alloc*/TRUE); - if (dev != NULL) { - dev->flags &= ~AHD_DEV_UNCONFIGURED; - dev->scsi_device = device; - ahd_linux_device_queue_depth(ahd, dev); - device->queue_depth = dev->openings - + dev->active; - if ((dev->flags & (AHD_DEV_Q_BASIC - | AHD_DEV_Q_TAGGED)) == 0) { - /* - * We allow the OS to queue 2 untagged - * transactions to us at any time even - * though we can only execute them - * serially on the controller/device. - * This should remove some latency. - */ - device->queue_depth = 2; - } - } - } - } - ahd_unlock(ahd, &flags); } -#endif #if defined(__i386__) /* * Return the disk geometry for the given SCSI device. */ static int -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) { uint8_t *bh; -#else -ahd_linux_biosparam(Disk *disk, kdev_t dev, int geom[]) -{ - struct scsi_device *sdev = disk->device; - u_long capacity = disk->capacity; - struct buffer_head *bh; -#endif int heads; int sectors; int cylinders; @@ -1151,22 +611,11 @@ ahd_linux_biosparam(Disk *disk, kdev_t dev, int geom[]) ahd = *((struct ahd_softc **)sdev->host->hostdata); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) bh = scsi_bios_ptable(bdev); -#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,17) - bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, block_size(dev)); -#else - bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, 1024); -#endif - if (bh) { ret = scsi_partsize(bh, capacity, &geom[2], &geom[0], &geom[1]); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) kfree(bh); -#else - brelse(bh); -#endif if (ret != -1) return (ret); } @@ -1194,392 +643,35 @@ ahd_linux_biosparam(Disk *disk, kdev_t dev, int geom[]) * Abort the current SCSI command(s). */ static int -ahd_linux_abort(Scsi_Cmnd *cmd) +ahd_linux_abort(struct scsi_cmnd *cmd) { - struct ahd_softc *ahd; - struct ahd_cmd *acmd; - struct ahd_cmd *list_acmd; - struct ahd_linux_device *dev; - struct scb *pending_scb; - u_long s; - u_int saved_scbptr; - u_int active_scbptr; - u_int last_phase; - u_int cdb_byte; - int retval; - int was_paused; - int paused; - int wait; - int disconnected; - ahd_mode_state saved_modes; - - pending_scb = NULL; - paused = FALSE; - wait = FALSE; - ahd = *(struct ahd_softc **)cmd->device->host->hostdata; - acmd = (struct ahd_cmd *)cmd; - - printf("%s:%d:%d:%d: Attempting to abort cmd %p:", - ahd_name(ahd), cmd->device->channel, cmd->device->id, - cmd->device->lun, cmd); - for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) - printf(" 0x%x", cmd->cmnd[cdb_byte]); - printf("\n"); - - /* - * In all versions of Linux, we have to work around - * a major flaw in how the mid-layer is locked down - * if we are to sleep successfully in our error handler - * while allowing our interrupt handler to run. Since - * the midlayer acquires either the io_request_lock or - * our lock prior to calling us, we must use the - * spin_unlock_irq() method for unlocking our lock. - * This will force interrupts to be enabled on the - * current CPU. Since the EH thread should not have - * been running with CPU interrupts disabled other than - * by acquiring either the io_request_lock or our own - * lock, this *should* be safe. - */ - ahd_midlayer_entrypoint_lock(ahd, &s); - - /* - * First determine if we currently own this command. - * Start by searching the device queue. If not found - * there, check the pending_scb list. If not found - * at all, and the system wanted us to just abort the - * command, return success. - */ - dev = ahd_linux_get_device(ahd, cmd->device->channel, - cmd->device->id, cmd->device->lun, - /*alloc*/FALSE); - - if (dev == NULL) { - /* - * No target device for this command exists, - * so we must not still own the command. - */ - printf("%s:%d:%d:%d: Is not an active device\n", - ahd_name(ahd), cmd->device->channel, cmd->device->id, - cmd->device->lun); - retval = SUCCESS; - goto no_cmd; - } - - TAILQ_FOREACH(list_acmd, &dev->busyq, acmd_links.tqe) { - if (list_acmd == acmd) - break; - } - - if (list_acmd != NULL) { - printf("%s:%d:%d:%d: Command found on device queue\n", - ahd_name(ahd), cmd->device->channel, cmd->device->id, - cmd->device->lun); - TAILQ_REMOVE(&dev->busyq, list_acmd, acmd_links.tqe); - cmd->result = DID_ABORT << 16; - ahd_linux_queue_cmd_complete(ahd, cmd); - retval = SUCCESS; - goto done; - } + int error; - /* - * See if we can find a matching cmd in the pending list. - */ - LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { - if (pending_scb->io_ctx == cmd) - break; - } - - if (pending_scb == NULL) { - printf("%s:%d:%d:%d: Command not found\n", - ahd_name(ahd), cmd->device->channel, cmd->device->id, - cmd->device->lun); - goto no_cmd; - } - - if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { - /* - * We can't queue two recovery actions using the same SCB - */ - retval = FAILED; - goto done; - } - - /* - * Ensure that the card doesn't do anything - * behind our back. Also make sure that we - * didn't "just" miss an interrupt that would - * affect this cmd. - */ - was_paused = ahd_is_paused(ahd); - ahd_pause_and_flushwork(ahd); - paused = TRUE; - - if ((pending_scb->flags & SCB_ACTIVE) == 0) { - printf("%s:%d:%d:%d: Command already completed\n", - ahd_name(ahd), cmd->device->channel, cmd->device->id, - cmd->device->lun); - goto no_cmd; - } - - printf("%s: At time of recovery, card was %spaused\n", - ahd_name(ahd), was_paused ? "" : "not "); - ahd_dump_card_state(ahd); - - disconnected = TRUE; - if (ahd_search_qinfifo(ahd, cmd->device->id, cmd->device->channel + 'A', - cmd->device->lun, SCB_GET_TAG(pending_scb), - ROLE_INITIATOR, CAM_REQ_ABORTED, - SEARCH_COMPLETE) > 0) { - printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", - ahd_name(ahd), cmd->device->channel, cmd->device->id, - cmd->device->lun); - retval = SUCCESS; - goto done; - } - - saved_modes = ahd_save_modes(ahd); - ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); - last_phase = ahd_inb(ahd, LASTPHASE); - saved_scbptr = ahd_get_scbptr(ahd); - active_scbptr = saved_scbptr; - if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { - struct scb *bus_scb; - - bus_scb = ahd_lookup_scb(ahd, active_scbptr); - if (bus_scb == pending_scb) - disconnected = FALSE; - } - - /* - * At this point, pending_scb is the scb associated with the - * passed in command. That command is currently active on the - * bus or is in the disconnected state. - */ - if (last_phase != P_BUSFREE - && SCB_GET_TAG(pending_scb) == active_scbptr) { - - /* - * We're active on the bus, so assert ATN - * and hope that the target responds. - */ - pending_scb = ahd_lookup_scb(ahd, active_scbptr); - pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; - ahd_outb(ahd, MSG_OUT, HOST_MSG); - ahd_outb(ahd, SCSISIGO, last_phase|ATNO); - printf("%s:%d:%d:%d: Device is active, asserting ATN\n", - ahd_name(ahd), cmd->device->channel, - cmd->device->id, cmd->device->lun); - wait = TRUE; - } else if (disconnected) { - - /* - * Actually re-queue this SCB in an attempt - * to select the device before it reconnects. - */ - pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; - ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); - pending_scb->hscb->cdb_len = 0; - pending_scb->hscb->task_attribute = 0; - pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; - - if ((pending_scb->flags & SCB_PACKETIZED) != 0) { - /* - * Mark the SCB has having an outstanding - * task management function. Should the command - * complete normally before the task management - * function can be sent, the host will be notified - * to abort our requeued SCB. - */ - ahd_outb(ahd, SCB_TASK_MANAGEMENT, - pending_scb->hscb->task_management); - } else { - /* - * If non-packetized, set the MK_MESSAGE control - * bit indicating that we desire to send a message. - * We also set the disconnected flag since there is - * no guarantee that our SCB control byte matches - * the version on the card. We don't want the - * sequencer to abort the command thinking an - * unsolicited reselection occurred. - */ - pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; - - /* - * The sequencer will never re-reference the - * in-core SCB. To make sure we are notified - * during reslection, set the MK_MESSAGE flag in - * the card's copy of the SCB. - */ - ahd_outb(ahd, SCB_CONTROL, - ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); - } - - /* - * Clear out any entries in the QINFIFO first - * so we are the next SCB for this target - * to run. - */ - ahd_search_qinfifo(ahd, cmd->device->id, - cmd->device->channel + 'A', cmd->device->lun, - SCB_LIST_NULL, ROLE_INITIATOR, - CAM_REQUEUE_REQ, SEARCH_COMPLETE); - ahd_qinfifo_requeue_tail(ahd, pending_scb); - ahd_set_scbptr(ahd, saved_scbptr); - ahd_print_path(ahd, pending_scb); - printf("Device is disconnected, re-queuing SCB\n"); - wait = TRUE; - } else { - printf("%s:%d:%d:%d: Unable to deliver message\n", - ahd_name(ahd), cmd->device->channel, - cmd->device->id, cmd->device->lun); - retval = FAILED; - goto done; - } - -no_cmd: - /* - * Our assumption is that if we don't have the command, no - * recovery action was required, so we return success. Again, - * the semantics of the mid-layer recovery engine are not - * well defined, so this may change in time. - */ - retval = SUCCESS; -done: - if (paused) - ahd_unpause(ahd); - if (wait) { - struct timer_list timer; - int ret; - - pending_scb->platform_data->flags |= AHD_SCB_UP_EH_SEM; - spin_unlock_irq(&ahd->platform_data->spin_lock); - init_timer(&timer); - timer.data = (u_long)pending_scb; - timer.expires = jiffies + (5 * HZ); - timer.function = ahd_linux_sem_timeout; - add_timer(&timer); - printf("Recovery code sleeping\n"); - down(&ahd->platform_data->eh_sem); - printf("Recovery code awake\n"); - ret = del_timer_sync(&timer); - if (ret == 0) { - printf("Timer Expired\n"); - retval = FAILED; - } - spin_lock_irq(&ahd->platform_data->spin_lock); - } - ahd_schedule_runq(ahd); - ahd_linux_run_complete_queue(ahd); - ahd_midlayer_entrypoint_unlock(ahd, &s); - return (retval); -} - - -static void -ahd_linux_dev_reset_complete(Scsi_Cmnd *cmd) -{ - free(cmd, M_DEVBUF); + error = ahd_linux_queue_recovery_cmd(cmd, SCB_ABORT); + if (error != 0) + printf("aic79xx_abort returns 0x%x\n", error); + return error; } /* * Attempt to send a target reset message to the device that timed out. */ static int -ahd_linux_dev_reset(Scsi_Cmnd *cmd) +ahd_linux_dev_reset(struct scsi_cmnd *cmd) { - struct ahd_softc *ahd; - struct scsi_cmnd *recovery_cmd; - struct ahd_linux_device *dev; - struct ahd_initiator_tinfo *tinfo; - struct ahd_tmode_tstate *tstate; - struct scb *scb; - struct hardware_scb *hscb; - u_long s; - struct timer_list timer; - int retval; - - ahd = *(struct ahd_softc **)cmd->device->host->hostdata; - recovery_cmd = malloc(sizeof(struct scsi_cmnd), M_DEVBUF, M_WAITOK); - if (!recovery_cmd) - return (FAILED); - memset(recovery_cmd, 0, sizeof(struct scsi_cmnd)); - recovery_cmd->device = cmd->device; - recovery_cmd->scsi_done = ahd_linux_dev_reset_complete; -#ifdef AHD_DEBUG - if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) - printf("%s:%d:%d:%d: Device reset called for cmd %p\n", - ahd_name(ahd), cmd->device->channel, cmd->device->id, - cmd->device->lun, cmd); -#endif - ahd_lock(ahd, &s); - - dev = ahd_linux_get_device(ahd, cmd->device->channel, cmd->device->id, - cmd->device->lun, /*alloc*/FALSE); - if (dev == NULL) { - ahd_unlock(ahd, &s); - kfree(recovery_cmd); - return (FAILED); - } - if ((scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX)) == NULL) { - ahd_unlock(ahd, &s); - kfree(recovery_cmd); - return (FAILED); - } - tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, - cmd->device->id, &tstate); - recovery_cmd->result = CAM_REQ_INPROG << 16; - recovery_cmd->host_scribble = (char *)scb; - scb->io_ctx = recovery_cmd; - scb->platform_data->dev = dev; - scb->sg_count = 0; - ahd_set_residual(scb, 0); - ahd_set_sense_residual(scb, 0); - hscb = scb->hscb; - hscb->control = 0; - hscb->scsiid = BUILD_SCSIID(ahd, cmd); - hscb->lun = cmd->device->lun; - hscb->cdb_len = 0; - hscb->task_management = SIU_TASKMGMT_LUN_RESET; - scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE; - if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { - scb->flags |= SCB_PACKETIZED; - } else { - hscb->control |= MK_MESSAGE; - } - dev->openings--; - dev->active++; - dev->commands_issued++; - LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); - ahd_queue_scb(ahd, scb); + int error; - scb->platform_data->flags |= AHD_SCB_UP_EH_SEM; - ahd_unlock(ahd, &s); - init_timer(&timer); - timer.data = (u_long)scb; - timer.expires = jiffies + (5 * HZ); - timer.function = ahd_linux_sem_timeout; - add_timer(&timer); - printf("Recovery code sleeping\n"); - down(&ahd->platform_data->eh_sem); - printf("Recovery code awake\n"); - retval = SUCCESS; - if (del_timer_sync(&timer) == 0) { - printf("Timer Expired\n"); - retval = FAILED; - } - ahd_lock(ahd, &s); - ahd_schedule_runq(ahd); - ahd_linux_run_complete_queue(ahd); - ahd_unlock(ahd, &s); - printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval); - return (retval); + error = ahd_linux_queue_recovery_cmd(cmd, SCB_DEVICE_RESET); + if (error != 0) + printf("aic79xx_dev_reset returns 0x%x\n", error); + return error; } /* * Reset the SCSI bus. */ static int -ahd_linux_bus_reset(Scsi_Cmnd *cmd) +ahd_linux_bus_reset(struct scsi_cmnd *cmd) { struct ahd_softc *ahd; u_long s; @@ -1594,7 +686,6 @@ ahd_linux_bus_reset(Scsi_Cmnd *cmd) ahd_lock(ahd, &s); found = ahd_reset_channel(ahd, cmd->device->channel + 'A', /*initiate reset*/TRUE); - ahd_linux_run_complete_queue(ahd); ahd_unlock(ahd, &s); if (bootverbose) @@ -1604,9 +695,10 @@ ahd_linux_bus_reset(Scsi_Cmnd *cmd) return (SUCCESS); } -Scsi_Host_Template aic79xx_driver_template = { +struct scsi_host_template aic79xx_driver_template = { .module = THIS_MODULE, .name = "aic79xx", + .proc_name = "aic79xx", .proc_info = ahd_linux_proc_info, .info = ahd_linux_info, .queuecommand = ahd_linux_queue, @@ -1623,37 +715,10 @@ Scsi_Host_Template aic79xx_driver_template = { .slave_alloc = ahd_linux_slave_alloc, .slave_configure = ahd_linux_slave_configure, .slave_destroy = ahd_linux_slave_destroy, + .target_alloc = ahd_linux_target_alloc, + .target_destroy = ahd_linux_target_destroy, }; -/**************************** Tasklet Handler *********************************/ - -/* - * In 2.4.X and above, this routine is called from a tasklet, - * so we must re-acquire our lock prior to executing this code. - * In all prior kernels, ahd_schedule_runq() calls this routine - * directly and ahd_schedule_runq() is called with our lock held. - */ -static void -ahd_runq_tasklet(unsigned long data) -{ - struct ahd_softc* ahd; - struct ahd_linux_device *dev; - u_long flags; - - ahd = (struct ahd_softc *)data; - ahd_lock(ahd, &flags); - while ((dev = ahd_linux_next_device_to_run(ahd)) != NULL) { - - TAILQ_REMOVE(&ahd->platform_data->device_runq, dev, links); - dev->flags &= ~AHD_DEV_ON_RUN_LIST; - ahd_linux_check_device_queue(ahd, dev); - /* Yeild to our interrupt handler */ - ahd_unlock(ahd, &flags); - ahd_lock(ahd, &flags); - } - ahd_unlock(ahd, &flags); -} - /******************************** Bus DMA *************************************/ int ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent, @@ -1693,36 +758,10 @@ int ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr, int flags, bus_dmamap_t *mapp) { - bus_dmamap_t map; - - map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT); - if (map == NULL) - return (ENOMEM); - /* - * Although we can dma data above 4GB, our - * "consistent" memory is below 4GB for - * space efficiency reasons (only need a 4byte - * address). For this reason, we have to reset - * our dma mask when doing allocations. - */ - if (ahd->dev_softc != NULL) - if (pci_set_dma_mask(ahd->dev_softc, 0xFFFFFFFF)) { - printk(KERN_WARNING "aic79xx: No suitable DMA available.\n"); - kfree(map); - return (ENODEV); - } *vaddr = pci_alloc_consistent(ahd->dev_softc, - dmat->maxsize, &map->bus_addr); - if (ahd->dev_softc != NULL) - if (pci_set_dma_mask(ahd->dev_softc, - ahd->platform_data->hw_dma_mask)) { - printk(KERN_WARNING "aic79xx: No suitable DMA available.\n"); - kfree(map); - return (ENODEV); - } + dmat->maxsize, mapp); if (*vaddr == NULL) return (ENOMEM); - *mapp = map; return(0); } @@ -1731,7 +770,7 @@ ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat, void* vaddr, bus_dmamap_t map) { pci_free_consistent(ahd->dev_softc, dmat->maxsize, - vaddr, map->bus_addr); + vaddr, map); } int @@ -1745,7 +784,7 @@ ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map, */ bus_dma_segment_t stack_sg; - stack_sg.ds_addr = map->bus_addr; + stack_sg.ds_addr = map; stack_sg.ds_len = dmat->maxsize; cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); return (0); @@ -1754,11 +793,6 @@ ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map, void ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) { - /* - * The map may is NULL in our < 2.3.X implementation. - */ - if (map != NULL) - free(map, M_DEVBUF); } int @@ -1823,41 +857,6 @@ ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd) } static void -ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) -{ - - if ((instance >= 0) && (targ >= 0) - && (instance < NUM_ELEMENTS(aic79xx_tag_info)) - && (targ < AHD_NUM_TARGETS)) { - aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; - if (bootverbose) - printf("tag_info[%d:%d] = %d\n", instance, targ, value); - } -} - -static void -ahd_linux_setup_rd_strm_info(u_long arg, int instance, int targ, int32_t value) -{ - if ((instance >= 0) - && (instance < NUM_ELEMENTS(aic79xx_rd_strm_info))) { - aic79xx_rd_strm_info[instance] = value & 0xFFFF; - if (bootverbose) - printf("rd_strm[%d] = 0x%x\n", instance, value); - } -} - -static void -ahd_linux_setup_dv(u_long arg, int instance, int targ, int32_t value) -{ - if ((instance >= 0) - && (instance < NUM_ELEMENTS(aic79xx_dv_settings))) { - aic79xx_dv_settings[instance] = value; - if (bootverbose) - printf("dv[%d] = %d\n", instance, value); - } -} - -static void ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value) { @@ -1887,6 +886,99 @@ ahd_linux_setup_tag_info_global(char *p) } } +static void +ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) +{ + + if ((instance >= 0) && (targ >= 0) + && (instance < NUM_ELEMENTS(aic79xx_tag_info)) + && (targ < AHD_NUM_TARGETS)) { + aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; + if (bootverbose) + printf("tag_info[%d:%d] = %d\n", instance, targ, value); + } +} + +static char * +ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth, + void (*callback)(u_long, int, int, int32_t), + u_long callback_arg) +{ + char *tok_end; + char *tok_end2; + int i; + int instance; + int targ; + int done; + char tok_list[] = {'.', ',', '{', '}', '\0'}; + + /* All options use a ':' name/arg separator */ + if (*opt_arg != ':') + return (opt_arg); + opt_arg++; + instance = -1; + targ = -1; + done = FALSE; + /* + * Restore separator that may be in + * the middle of our option argument. + */ + tok_end = strchr(opt_arg, '\0'); + if (tok_end < end) + *tok_end = ','; + while (!done) { + switch (*opt_arg) { + case '{': + if (instance == -1) { + instance = 0; + } else { + if (depth > 1) { + if (targ == -1) + targ = 0; + } else { + printf("Malformed Option %s\n", + opt_name); + done = TRUE; + } + } + opt_arg++; + break; + case '}': + if (targ != -1) + targ = -1; + else if (instance != -1) + instance = -1; + opt_arg++; + break; + case ',': + case '.': + if (instance == -1) + done = TRUE; + else if (targ >= 0) + targ++; + else if (instance >= 0) + instance++; + opt_arg++; + break; + case '\0': + done = TRUE; + break; + default: + tok_end = end; + for (i = 0; tok_list[i]; i++) { + tok_end2 = strchr(opt_arg, tok_list[i]); + if ((tok_end2) && (tok_end2 < tok_end)) + tok_end = tok_end2; + } + callback(callback_arg, instance, targ, + simple_strtol(opt_arg, NULL, 0)); + opt_arg = tok_end; + break; + } + } + return (opt_arg); +} + /* * Handle Linux boot parameters. This routine allows for assigning a value * to a parameter with a ':' between the parameter and the value. @@ -1916,8 +1008,6 @@ aic79xx_setup(char *s) { "seltime", &aic79xx_seltime }, { "tag_info", NULL }, { "global_tag_depth", NULL}, - { "rd_strm", NULL }, - { "dv", NULL }, { "slewrate", NULL }, { "precomp", NULL }, { "amplitude", NULL }, @@ -1946,24 +1036,18 @@ aic79xx_setup(char *s) if (strncmp(p, "global_tag_depth", n) == 0) { ahd_linux_setup_tag_info_global(p + n); } else if (strncmp(p, "tag_info", n) == 0) { - s = aic_parse_brace_option("tag_info", p + n, end, + s = ahd_parse_brace_option("tag_info", p + n, end, 2, ahd_linux_setup_tag_info, 0); - } else if (strncmp(p, "rd_strm", n) == 0) { - s = aic_parse_brace_option("rd_strm", p + n, end, - 1, ahd_linux_setup_rd_strm_info, 0); - } else if (strncmp(p, "dv", n) == 0) { - s = aic_parse_brace_option("dv", p + n, end, 1, - ahd_linux_setup_dv, 0); } else if (strncmp(p, "slewrate", n) == 0) { - s = aic_parse_brace_option("slewrate", + s = ahd_parse_brace_option("slewrate", p + n, end, 1, ahd_linux_setup_iocell_info, AIC79XX_SLEWRATE_INDEX); } else if (strncmp(p, "precomp", n) == 0) { - s = aic_parse_brace_option("precomp", + s = ahd_parse_brace_option("precomp", p + n, end, 1, ahd_linux_setup_iocell_info, AIC79XX_PRECOMP_INDEX); } else if (strncmp(p, "amplitude", n) == 0) { - s = aic_parse_brace_option("amplitude", + s = ahd_parse_brace_option("amplitude", p + n, end, 1, ahd_linux_setup_iocell_info, AIC79XX_AMPLITUDE_INDEX); } else if (p[n] == ':') { @@ -1982,13 +1066,12 @@ __setup("aic79xx=", aic79xx_setup); uint32_t aic79xx_verbose; int -ahd_linux_register_host(struct ahd_softc *ahd, Scsi_Host_Template *template) +ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template) { char buf[80]; struct Scsi_Host *host; char *new_name; u_long s; - u_long target; template->name = ahd->description; host = scsi_host_alloc(template, sizeof(struct ahd_softc *)); @@ -1997,11 +1080,7 @@ ahd_linux_register_host(struct ahd_softc *ahd, Scsi_Host_Template *template) *((struct ahd_softc **)host->hostdata) = ahd; ahd_lock(ahd, &s); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) scsi_assign_lock(host, &ahd->platform_data->spin_lock); -#elif AHD_SCSI_HAS_HOST_LOCK != 0 - host->lock = &ahd->platform_data->spin_lock; -#endif ahd->platform_data->host = host; host->can_queue = AHD_MAX_QUEUE; host->cmd_per_lun = 2; @@ -2012,7 +1091,7 @@ ahd_linux_register_host(struct ahd_softc *ahd, Scsi_Host_Template *template) host->max_lun = AHD_NUM_LUNS; host->max_channel = 0; host->sg_tablesize = AHD_NSEG; - ahd_set_unit(ahd, ahd_linux_next_unit()); + ahd_set_unit(ahd, ahd_linux_unit++); sprintf(buf, "scsi%d", host->host_no); new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); if (new_name != NULL) { @@ -2020,54 +1099,14 @@ ahd_linux_register_host(struct ahd_softc *ahd, Scsi_Host_Template *template) ahd_set_name(ahd, new_name); } host->unique_id = ahd->unit; -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - scsi_set_pci_device(host, ahd->dev_softc); -#endif - ahd_linux_setup_user_rd_strm_settings(ahd); ahd_linux_initialize_scsi_bus(ahd); - ahd_unlock(ahd, &s); - ahd->platform_data->dv_pid = kernel_thread(ahd_linux_dv_thread, ahd, 0); - ahd_lock(ahd, &s); - if (ahd->platform_data->dv_pid < 0) { - printf("%s: Failed to create DV thread, error= %d\n", - ahd_name(ahd), ahd->platform_data->dv_pid); - return (-ahd->platform_data->dv_pid); - } - /* - * Initially allocate *all* of our linux target objects - * so that the DV thread will scan them all in parallel - * just after driver initialization. Any device that - * does not exist will have its target object destroyed - * by the selection timeout handler. In the case of a - * device that appears after the initial DV scan, async - * negotiation will occur for the first command, and DV - * will comence should that first command be successful. - */ - for (target = 0; target < host->max_id; target++) { - - /* - * Skip our own ID. Some Compaq/HP storage devices - * have enclosure management devices that respond to - * single bit selection (i.e. selecting ourselves). - * It is expected that either an external application - * or a modified kernel will be used to probe this - * ID if it is appropriate. To accommodate these - * installations, ahc_linux_alloc_target() will allocate - * for our ID if asked to do so. - */ - if (target == ahd->our_id) - continue; - - ahd_linux_alloc_target(ahd, 0, target); - } ahd_intr_enable(ahd, TRUE); - ahd_linux_start_dv(ahd); ahd_unlock(ahd, &s); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) + host->transportt = ahd_linux_transport_template; + scsi_add_host(host, &ahd->dev_softc->dev); /* XXX handle failure */ scsi_scan_host(host); -#endif return (0); } @@ -2081,29 +1120,6 @@ ahd_linux_get_memsize(void) } /* - * Find the smallest available unit number to use - * for a new device. We don't just use a static - * count to handle the "repeated hot-(un)plug" - * scenario. - */ -static int -ahd_linux_next_unit(void) -{ - struct ahd_softc *ahd; - int unit; - - unit = 0; -retry: - TAILQ_FOREACH(ahd, &ahd_tailq, links) { - if (ahd->unit == unit) { - unit++; - goto retry; - } - } - return (unit); -} - -/* * Place the SCSI bus into a known state by either resetting it, * or forcing transfer negotiations on the next command to any * target. @@ -2162,20 +1178,9 @@ ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) if (ahd->platform_data == NULL) return (ENOMEM); memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); - TAILQ_INIT(&ahd->platform_data->completeq); - TAILQ_INIT(&ahd->platform_data->device_runq); ahd->platform_data->irq = AHD_LINUX_NOIRQ; - ahd->platform_data->hw_dma_mask = 0xFFFFFFFF; ahd_lockinit(ahd); - ahd_done_lockinit(ahd); - init_timer(&ahd->platform_data->completeq_timer); - ahd->platform_data->completeq_timer.data = (u_long)ahd; - ahd->platform_data->completeq_timer.function = - (ahd_linux_callback_t *)ahd_linux_thread_run_complete_queue; init_MUTEX_LOCKED(&ahd->platform_data->eh_sem); - init_MUTEX_LOCKED(&ahd->platform_data->dv_sem); - init_MUTEX_LOCKED(&ahd->platform_data->dv_cmd_sem); - ahd_setup_runq_tasklet(ahd); ahd->seltime = (aic79xx_seltime & 0x3) << 4; return (0); } @@ -2183,39 +1188,27 @@ ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) void ahd_platform_free(struct ahd_softc *ahd) { - struct ahd_linux_target *targ; - struct ahd_linux_device *dev; + struct scsi_target *starget; int i, j; if (ahd->platform_data != NULL) { - del_timer_sync(&ahd->platform_data->completeq_timer); - ahd_linux_kill_dv_thread(ahd); - ahd_teardown_runq_tasklet(ahd); if (ahd->platform_data->host != NULL) { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) scsi_remove_host(ahd->platform_data->host); -#endif scsi_host_put(ahd->platform_data->host); } /* destroy all of the device and target objects */ for (i = 0; i < AHD_NUM_TARGETS; i++) { - targ = ahd->platform_data->targets[i]; - if (targ != NULL) { - /* Keep target around through the loop. */ - targ->refcount++; + starget = ahd->platform_data->starget[i]; + if (starget != NULL) { for (j = 0; j < AHD_NUM_LUNS; j++) { - - if (targ->devices[j] == NULL) + struct ahd_linux_target *targ = + scsi_transport_target_data(starget); + if (targ->sdev[j] == NULL) continue; - dev = targ->devices[j]; - ahd_linux_free_device(ahd, dev); + targ->sdev[j] = NULL; } - /* - * Forcibly free the target now that - * all devices are gone. - */ - ahd_linux_free_target(ahd, targ); + ahd->platform_data->starget[i] = NULL; } } @@ -2233,16 +1226,6 @@ ahd_platform_free(struct ahd_softc *ahd) release_mem_region(ahd->platform_data->mem_busaddr, 0x1000); } -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - /* - * In 2.4 we detach from the scsi midlayer before the PCI - * layer invokes our remove callback. No per-instance - * detach is provided, so we must reach inside the PCI - * subsystem's internals and detach our driver manually. - */ - if (ahd->dev_softc != NULL) - ahd->dev_softc->driver = NULL; -#endif free(ahd->platform_data, M_DEVBUF); } } @@ -2280,13 +1263,22 @@ void ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, ahd_queue_alg alg) { + struct scsi_target *starget; + struct ahd_linux_target *targ; struct ahd_linux_device *dev; + struct scsi_device *sdev; int was_queuing; int now_queuing; - dev = ahd_linux_get_device(ahd, devinfo->channel - 'A', - devinfo->target, - devinfo->lun, /*alloc*/FALSE); + starget = ahd->platform_data->starget[devinfo->target]; + targ = scsi_transport_target_data(starget); + BUG_ON(targ == NULL); + sdev = targ->sdev[devinfo->lun]; + if (sdev == NULL) + return; + + dev = scsi_transport_device_data(sdev); + if (dev == NULL) return; was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); @@ -2339,1434 +1331,37 @@ ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, dev->maxtags = 0; dev->openings = 1 - dev->active; } -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) - if (dev->scsi_device != NULL) { - switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { - case AHD_DEV_Q_BASIC: - scsi_adjust_queue_depth(dev->scsi_device, - MSG_SIMPLE_TASK, - dev->openings + dev->active); - break; - case AHD_DEV_Q_TAGGED: - scsi_adjust_queue_depth(dev->scsi_device, - MSG_ORDERED_TASK, - dev->openings + dev->active); - break; - default: - /* - * We allow the OS to queue 2 untagged transactions to - * us at any time even though we can only execute them - * serially on the controller/device. This should - * remove some latency. - */ - scsi_adjust_queue_depth(dev->scsi_device, - /*NON-TAGGED*/0, - /*queue depth*/2); - break; - } - } -#endif -} - -int -ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, - int lun, u_int tag, role_t role, uint32_t status) -{ - int targ; - int maxtarg; - int maxlun; - int clun; - int count; - - if (tag != SCB_LIST_NULL) - return (0); - - targ = 0; - if (target != CAM_TARGET_WILDCARD) { - targ = target; - maxtarg = targ + 1; - } else { - maxtarg = (ahd->features & AHD_WIDE) ? 16 : 8; - } - clun = 0; - if (lun != CAM_LUN_WILDCARD) { - clun = lun; - maxlun = clun + 1; - } else { - maxlun = AHD_NUM_LUNS; - } - - count = 0; - for (; targ < maxtarg; targ++) { - - for (; clun < maxlun; clun++) { - struct ahd_linux_device *dev; - struct ahd_busyq *busyq; - struct ahd_cmd *acmd; - - dev = ahd_linux_get_device(ahd, /*chan*/0, targ, - clun, /*alloc*/FALSE); - if (dev == NULL) - continue; - - busyq = &dev->busyq; - while ((acmd = TAILQ_FIRST(busyq)) != NULL) { - Scsi_Cmnd *cmd; - - cmd = &acmd_scsi_cmd(acmd); - TAILQ_REMOVE(busyq, acmd, - acmd_links.tqe); - count++; - cmd->result = status << 16; - ahd_linux_queue_cmd_complete(ahd, cmd); - } - } - } - - return (count); -} - -static void -ahd_linux_thread_run_complete_queue(struct ahd_softc *ahd) -{ - u_long flags; - - ahd_lock(ahd, &flags); - del_timer(&ahd->platform_data->completeq_timer); - ahd->platform_data->flags &= ~AHD_RUN_CMPLT_Q_TIMER; - ahd_linux_run_complete_queue(ahd); - ahd_unlock(ahd, &flags); -} - -static void -ahd_linux_start_dv(struct ahd_softc *ahd) -{ - - /* - * Freeze the simq and signal ahd_linux_queue to not let any - * more commands through - */ - if ((ahd->platform_data->flags & AHD_DV_ACTIVE) == 0) { -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) - printf("%s: Starting DV\n", ahd_name(ahd)); -#endif - - ahd->platform_data->flags |= AHD_DV_ACTIVE; - ahd_freeze_simq(ahd); - - /* Wake up the DV kthread */ - up(&ahd->platform_data->dv_sem); - } -} - -static int -ahd_linux_dv_thread(void *data) -{ - struct ahd_softc *ahd; - int target; - u_long s; - - ahd = (struct ahd_softc *)data; - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) - printf("In DV Thread\n"); -#endif - - /* - * Complete thread creation. - */ - lock_kernel(); -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,60) - /* - * Don't care about any signals. - */ - siginitsetinv(¤t->blocked, 0); - - daemonize(); - sprintf(current->comm, "ahd_dv_%d", ahd->unit); -#else - daemonize("ahd_dv_%d", ahd->unit); - current->flags |= PF_NOFREEZE; -#endif - unlock_kernel(); - - while (1) { - /* - * Use down_interruptible() rather than down() to - * avoid inclusion in the load average. - */ - down_interruptible(&ahd->platform_data->dv_sem); - - /* Check to see if we've been signaled to exit */ - ahd_lock(ahd, &s); - if ((ahd->platform_data->flags & AHD_DV_SHUTDOWN) != 0) { - ahd_unlock(ahd, &s); - break; - } - ahd_unlock(ahd, &s); - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) - printf("%s: Beginning Domain Validation\n", - ahd_name(ahd)); -#endif - - /* - * Wait for any pending commands to drain before proceeding. - */ - ahd_lock(ahd, &s); - while (LIST_FIRST(&ahd->pending_scbs) != NULL) { - ahd->platform_data->flags |= AHD_DV_WAIT_SIMQ_EMPTY; - ahd_unlock(ahd, &s); - down_interruptible(&ahd->platform_data->dv_sem); - ahd_lock(ahd, &s); - } - - /* - * Wait for the SIMQ to be released so that DV is the - * only reason the queue is frozen. - */ - while (AHD_DV_SIMQ_FROZEN(ahd) == 0) { - ahd->platform_data->flags |= AHD_DV_WAIT_SIMQ_RELEASE; - ahd_unlock(ahd, &s); - down_interruptible(&ahd->platform_data->dv_sem); - ahd_lock(ahd, &s); - } - ahd_unlock(ahd, &s); - - for (target = 0; target < AHD_NUM_TARGETS; target++) - ahd_linux_dv_target(ahd, target); - - ahd_lock(ahd, &s); - ahd->platform_data->flags &= ~AHD_DV_ACTIVE; - ahd_unlock(ahd, &s); - - /* - * Release the SIMQ so that normal commands are - * allowed to continue on the bus. - */ - ahd_release_simq(ahd); - } - up(&ahd->platform_data->eh_sem); - return (0); -} - -static void -ahd_linux_kill_dv_thread(struct ahd_softc *ahd) -{ - u_long s; - - ahd_lock(ahd, &s); - if (ahd->platform_data->dv_pid != 0) { - ahd->platform_data->flags |= AHD_DV_SHUTDOWN; - ahd_unlock(ahd, &s); - up(&ahd->platform_data->dv_sem); - - /* - * Use the eh_sem as an indicator that the - * dv thread is exiting. Note that the dv - * thread must still return after performing - * the up on our semaphore before it has - * completely exited this module. Unfortunately, - * there seems to be no easy way to wait for the - * exit of a thread for which you are not the - * parent (dv threads are parented by init). - * Cross your fingers... - */ - down(&ahd->platform_data->eh_sem); - - /* - * Mark the dv thread as already dead. This - * avoids attempting to kill it a second time. - * This is necessary because we must kill the - * DV thread before calling ahd_free() in the - * module shutdown case to avoid bogus locking - * in the SCSI mid-layer, but we ahd_free() is - * called without killing the DV thread in the - * instance detach case, so ahd_platform_free() - * calls us again to verify that the DV thread - * is dead. - */ - ahd->platform_data->dv_pid = 0; - } else { - ahd_unlock(ahd, &s); - } -} - -#define AHD_LINUX_DV_INQ_SHORT_LEN 36 -#define AHD_LINUX_DV_INQ_LEN 256 -#define AHD_LINUX_DV_TIMEOUT (HZ / 4) - -#define AHD_SET_DV_STATE(ahd, targ, newstate) \ - ahd_set_dv_state(ahd, targ, newstate, __LINE__) - -static __inline void -ahd_set_dv_state(struct ahd_softc *ahd, struct ahd_linux_target *targ, - ahd_dv_state newstate, u_int line) -{ - ahd_dv_state oldstate; - - oldstate = targ->dv_state; -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) - printf("%s:%d: Going from state %d to state %d\n", - ahd_name(ahd), line, oldstate, newstate); -#endif - - if (oldstate == newstate) - targ->dv_state_retry++; - else - targ->dv_state_retry = 0; - targ->dv_state = newstate; -} - -static void -ahd_linux_dv_target(struct ahd_softc *ahd, u_int target_offset) -{ - struct ahd_devinfo devinfo; - struct ahd_linux_target *targ; - struct scsi_cmnd *cmd; - struct scsi_device *scsi_dev; - struct scsi_sense_data *sense; - uint8_t *buffer; - u_long s; - u_int timeout; - int echo_size; - - sense = NULL; - buffer = NULL; - echo_size = 0; - ahd_lock(ahd, &s); - targ = ahd->platform_data->targets[target_offset]; - if (targ == NULL || (targ->flags & AHD_DV_REQUIRED) == 0) { - ahd_unlock(ahd, &s); - return; - } - ahd_compile_devinfo(&devinfo, ahd->our_id, targ->target, /*lun*/0, - targ->channel + 'A', ROLE_INITIATOR); -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, &devinfo); - printf("Performing DV\n"); - } -#endif - - ahd_unlock(ahd, &s); - - cmd = malloc(sizeof(struct scsi_cmnd), M_DEVBUF, M_WAITOK); - scsi_dev = malloc(sizeof(struct scsi_device), M_DEVBUF, M_WAITOK); - scsi_dev->host = ahd->platform_data->host; - scsi_dev->id = devinfo.target; - scsi_dev->lun = devinfo.lun; - scsi_dev->channel = devinfo.channel - 'A'; - ahd->platform_data->dv_scsi_dev = scsi_dev; - - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_INQ_SHORT_ASYNC); - - while (targ->dv_state != AHD_DV_STATE_EXIT) { - timeout = AHD_LINUX_DV_TIMEOUT; - switch (targ->dv_state) { - case AHD_DV_STATE_INQ_SHORT_ASYNC: - case AHD_DV_STATE_INQ_ASYNC: - case AHD_DV_STATE_INQ_ASYNC_VERIFY: - /* - * Set things to async narrow to reduce the - * chance that the INQ will fail. - */ - ahd_lock(ahd, &s); - ahd_set_syncrate(ahd, &devinfo, 0, 0, 0, - AHD_TRANS_GOAL, /*paused*/FALSE); - ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, - AHD_TRANS_GOAL, /*paused*/FALSE); - ahd_unlock(ahd, &s); - timeout = 10 * HZ; - targ->flags &= ~AHD_INQ_VALID; - /* FALLTHROUGH */ - case AHD_DV_STATE_INQ_VERIFY: - { - u_int inq_len; - - if (targ->dv_state == AHD_DV_STATE_INQ_SHORT_ASYNC) - inq_len = AHD_LINUX_DV_INQ_SHORT_LEN; - else - inq_len = targ->inq_data->additional_length + 5; - ahd_linux_dv_inq(ahd, cmd, &devinfo, targ, inq_len); - break; - } - case AHD_DV_STATE_TUR: - case AHD_DV_STATE_BUSY: - timeout = 5 * HZ; - ahd_linux_dv_tur(ahd, cmd, &devinfo); - break; - case AHD_DV_STATE_REBD: - ahd_linux_dv_rebd(ahd, cmd, &devinfo, targ); - break; - case AHD_DV_STATE_WEB: - ahd_linux_dv_web(ahd, cmd, &devinfo, targ); - break; - - case AHD_DV_STATE_REB: - ahd_linux_dv_reb(ahd, cmd, &devinfo, targ); - break; - - case AHD_DV_STATE_SU: - ahd_linux_dv_su(ahd, cmd, &devinfo, targ); - timeout = 50 * HZ; - break; - - default: - ahd_print_devinfo(ahd, &devinfo); - printf("Unknown DV state %d\n", targ->dv_state); - goto out; - } - - /* Queue the command and wait for it to complete */ - /* Abuse eh_timeout in the scsi_cmnd struct for our purposes */ - init_timer(&cmd->eh_timeout); -#ifdef AHD_DEBUG - if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) - /* - * All of the printfs during negotiation - * really slow down the negotiation. - * Add a bit of time just to be safe. - */ - timeout += HZ; -#endif - scsi_add_timer(cmd, timeout, ahd_linux_dv_timeout); - /* - * In 2.5.X, it is assumed that all calls from the - * "midlayer" (which we are emulating) will have the - * ahd host lock held. For other kernels, the - * io_request_lock must be held. - */ -#if AHD_SCSI_HAS_HOST_LOCK != 0 - ahd_lock(ahd, &s); -#else - spin_lock_irqsave(&io_request_lock, s); -#endif - ahd_linux_queue(cmd, ahd_linux_dv_complete); -#if AHD_SCSI_HAS_HOST_LOCK != 0 - ahd_unlock(ahd, &s); -#else - spin_unlock_irqrestore(&io_request_lock, s); -#endif - down_interruptible(&ahd->platform_data->dv_cmd_sem); - /* - * Wait for the SIMQ to be released so that DV is the - * only reason the queue is frozen. - */ - ahd_lock(ahd, &s); - while (AHD_DV_SIMQ_FROZEN(ahd) == 0) { - ahd->platform_data->flags |= AHD_DV_WAIT_SIMQ_RELEASE; - ahd_unlock(ahd, &s); - down_interruptible(&ahd->platform_data->dv_sem); - ahd_lock(ahd, &s); - } - ahd_unlock(ahd, &s); - - ahd_linux_dv_transition(ahd, cmd, &devinfo, targ); - } - -out: - if ((targ->flags & AHD_INQ_VALID) != 0 - && ahd_linux_get_device(ahd, devinfo.channel - 'A', - devinfo.target, devinfo.lun, - /*alloc*/FALSE) == NULL) { - /* - * The DV state machine failed to configure this device. - * This is normal if DV is disabled. Since we have inquiry - * data, filter it and use the "optimistic" negotiation - * parameters found in the inquiry string. - */ - ahd_linux_filter_inquiry(ahd, &devinfo); - if ((targ->flags & (AHD_BASIC_DV|AHD_ENHANCED_DV)) != 0) { - ahd_print_devinfo(ahd, &devinfo); - printf("DV failed to configure device. " - "Please file a bug report against " - "this driver.\n"); - } - } - - if (cmd != NULL) - free(cmd, M_DEVBUF); - - if (ahd->platform_data->dv_scsi_dev != NULL) { - free(ahd->platform_data->dv_scsi_dev, M_DEVBUF); - ahd->platform_data->dv_scsi_dev = NULL; - } - - ahd_lock(ahd, &s); - if (targ->dv_buffer != NULL) { - free(targ->dv_buffer, M_DEVBUF); - targ->dv_buffer = NULL; - } - if (targ->dv_buffer1 != NULL) { - free(targ->dv_buffer1, M_DEVBUF); - targ->dv_buffer1 = NULL; - } - targ->flags &= ~AHD_DV_REQUIRED; - if (targ->refcount == 0) - ahd_linux_free_target(ahd, targ); - ahd_unlock(ahd, &s); -} - -static __inline int -ahd_linux_dv_fallback(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) -{ - u_long s; - int retval; - - ahd_lock(ahd, &s); - retval = ahd_linux_fallback(ahd, devinfo); - ahd_unlock(ahd, &s); - - return (retval); -} - -static void -ahd_linux_dv_transition(struct ahd_softc *ahd, struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, - struct ahd_linux_target *targ) -{ - u_int32_t status; - - status = aic_error_action(cmd, targ->inq_data, - ahd_cmd_get_transaction_status(cmd), - ahd_cmd_get_scsi_status(cmd)); - - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Entering ahd_linux_dv_transition, state= %d, " - "status= 0x%x, cmd->result= 0x%x\n", targ->dv_state, - status, cmd->result); - } -#endif - switch (targ->dv_state) { - case AHD_DV_STATE_INQ_SHORT_ASYNC: - case AHD_DV_STATE_INQ_ASYNC: - switch (status & SS_MASK) { - case SS_NOP: - { - AHD_SET_DV_STATE(ahd, targ, targ->dv_state+1); - break; - } - case SS_INQ_REFRESH: - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_TUR: - case SS_RETRY: - AHD_SET_DV_STATE(ahd, targ, targ->dv_state); - if (ahd_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) - targ->dv_state_retry--; - if ((status & SS_ERRMASK) == EBUSY) - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY); - if (targ->dv_state_retry < 10) - break; - /* FALLTHROUGH */ - default: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Failed DV inquiry, skipping\n"); - } -#endif - break; - } + switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { + case AHD_DEV_Q_BASIC: + scsi_adjust_queue_depth(sdev, + MSG_SIMPLE_TASK, + dev->openings + dev->active); break; - case AHD_DV_STATE_INQ_ASYNC_VERIFY: - switch (status & SS_MASK) { - case SS_NOP: - { - u_int xportflags; - u_int spi3data; - - if (memcmp(targ->inq_data, targ->dv_buffer, - AHD_LINUX_DV_INQ_LEN) != 0) { - /* - * Inquiry data must have changed. - * Try from the top again. - */ - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - } - - AHD_SET_DV_STATE(ahd, targ, targ->dv_state+1); - targ->flags |= AHD_INQ_VALID; - if (ahd_linux_user_dv_setting(ahd) == 0) - break; - - xportflags = targ->inq_data->flags; - if ((xportflags & (SID_Sync|SID_WBus16)) == 0) - break; - - spi3data = targ->inq_data->spi3data; - switch (spi3data & SID_SPI_CLOCK_DT_ST) { - default: - case SID_SPI_CLOCK_ST: - /* Assume only basic DV is supported. */ - targ->flags |= AHD_BASIC_DV; - break; - case SID_SPI_CLOCK_DT: - case SID_SPI_CLOCK_DT_ST: - targ->flags |= AHD_ENHANCED_DV; - break; - } - break; - } - case SS_INQ_REFRESH: - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_TUR: - case SS_RETRY: - AHD_SET_DV_STATE(ahd, targ, targ->dv_state); - if (ahd_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) - targ->dv_state_retry--; - - if ((status & SS_ERRMASK) == EBUSY) - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY); - if (targ->dv_state_retry < 10) - break; - /* FALLTHROUGH */ - default: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Failed DV inquiry, skipping\n"); - } -#endif - break; - } + case AHD_DEV_Q_TAGGED: + scsi_adjust_queue_depth(sdev, + MSG_ORDERED_TASK, + dev->openings + dev->active); break; - case AHD_DV_STATE_INQ_VERIFY: - switch (status & SS_MASK) { - case SS_NOP: - { - - if (memcmp(targ->inq_data, targ->dv_buffer, - AHD_LINUX_DV_INQ_LEN) == 0) { - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - int i; - - ahd_print_devinfo(ahd, devinfo); - printf("Inquiry buffer mismatch:"); - for (i = 0; i < AHD_LINUX_DV_INQ_LEN; i++) { - if ((i & 0xF) == 0) - printf("\n "); - printf("0x%x:0x0%x ", - ((uint8_t *)targ->inq_data)[i], - targ->dv_buffer[i]); - } - printf("\n"); - } -#endif - - if (ahd_linux_dv_fallback(ahd, devinfo) != 0) { - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } - /* - * Do not count "falling back" - * against our retries. - */ - targ->dv_state_retry = 0; - AHD_SET_DV_STATE(ahd, targ, targ->dv_state); - break; - } - case SS_INQ_REFRESH: - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_TUR: - case SS_RETRY: - AHD_SET_DV_STATE(ahd, targ, targ->dv_state); - if (ahd_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) { - targ->dv_state_retry--; - } else if ((status & SSQ_FALLBACK) != 0) { - if (ahd_linux_dv_fallback(ahd, devinfo) != 0) { - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_EXIT); - break; - } - /* - * Do not count "falling back" - * against our retries. - */ - targ->dv_state_retry = 0; - } else if ((status & SS_ERRMASK) == EBUSY) - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY); - if (targ->dv_state_retry < 10) - break; - /* FALLTHROUGH */ - default: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Failed DV inquiry, skipping\n"); - } -#endif - break; - } - break; - - case AHD_DV_STATE_TUR: - switch (status & SS_MASK) { - case SS_NOP: - if ((targ->flags & AHD_BASIC_DV) != 0) { - ahd_linux_filter_inquiry(ahd, devinfo); - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_VERIFY); - } else if ((targ->flags & AHD_ENHANCED_DV) != 0) { - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_REBD); - } else { - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - } - break; - case SS_RETRY: - case SS_TUR: - if ((status & SS_ERRMASK) == EBUSY) { - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY); - break; - } - AHD_SET_DV_STATE(ahd, targ, targ->dv_state); - if (ahd_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) { - targ->dv_state_retry--; - } else if ((status & SSQ_FALLBACK) != 0) { - if (ahd_linux_dv_fallback(ahd, devinfo) != 0) { - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_EXIT); - break; - } - /* - * Do not count "falling back" - * against our retries. - */ - targ->dv_state_retry = 0; - } - if (targ->dv_state_retry >= 10) { -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("DV TUR reties exhausted\n"); - } -#endif - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } - if (status & SSQ_DELAY) - ssleep(1); - - break; - case SS_START: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_SU); - break; - case SS_INQ_REFRESH: - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - default: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } - break; - - case AHD_DV_STATE_REBD: - switch (status & SS_MASK) { - case SS_NOP: - { - uint32_t echo_size; - - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_WEB); - echo_size = scsi_3btoul(&targ->dv_buffer[1]); - echo_size &= 0x1FFF; -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Echo buffer size= %d\n", echo_size); - } -#endif - if (echo_size == 0) { - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } - - /* Generate the buffer pattern */ - targ->dv_echo_size = echo_size; - ahd_linux_generate_dv_pattern(targ); - /* - * Setup initial negotiation values. - */ - ahd_linux_filter_inquiry(ahd, devinfo); - break; - } - case SS_INQ_REFRESH: - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_RETRY: - AHD_SET_DV_STATE(ahd, targ, targ->dv_state); - if (ahd_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) - targ->dv_state_retry--; - if (targ->dv_state_retry <= 10) - break; -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("DV REBD reties exhausted\n"); - } -#endif - /* FALLTHROUGH */ - case SS_FATAL: - default: - /* - * Setup initial negotiation values - * and try level 1 DV. - */ - ahd_linux_filter_inquiry(ahd, devinfo); - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_INQ_VERIFY); - targ->dv_echo_size = 0; - break; - } - break; - - case AHD_DV_STATE_WEB: - switch (status & SS_MASK) { - case SS_NOP: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_REB); - break; - case SS_INQ_REFRESH: - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_RETRY: - AHD_SET_DV_STATE(ahd, targ, targ->dv_state); - if (ahd_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) { - targ->dv_state_retry--; - } else if ((status & SSQ_FALLBACK) != 0) { - if (ahd_linux_dv_fallback(ahd, devinfo) != 0) { - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_EXIT); - break; - } - /* - * Do not count "falling back" - * against our retries. - */ - targ->dv_state_retry = 0; - } - if (targ->dv_state_retry <= 10) - break; - /* FALLTHROUGH */ -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("DV WEB reties exhausted\n"); - } -#endif - default: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } - break; - - case AHD_DV_STATE_REB: - switch (status & SS_MASK) { - case SS_NOP: - if (memcmp(targ->dv_buffer, targ->dv_buffer1, - targ->dv_echo_size) != 0) { - if (ahd_linux_dv_fallback(ahd, devinfo) != 0) - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_EXIT); - else - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_WEB); - break; - } - - if (targ->dv_buffer != NULL) { - free(targ->dv_buffer, M_DEVBUF); - targ->dv_buffer = NULL; - } - if (targ->dv_buffer1 != NULL) { - free(targ->dv_buffer1, M_DEVBUF); - targ->dv_buffer1 = NULL; - } - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - case SS_INQ_REFRESH: - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_RETRY: - AHD_SET_DV_STATE(ahd, targ, targ->dv_state); - if (ahd_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) { - targ->dv_state_retry--; - } else if ((status & SSQ_FALLBACK) != 0) { - if (ahd_linux_dv_fallback(ahd, devinfo) != 0) { - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_EXIT); - break; - } - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_WEB); - } - if (targ->dv_state_retry <= 10) { - if ((status & (SSQ_DELAY_RANDOM|SSQ_DELAY))!= 0) - msleep(ahd->our_id*1000/10); - break; - } -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("DV REB reties exhausted\n"); - } -#endif - /* FALLTHROUGH */ - default: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } - break; - - case AHD_DV_STATE_SU: - switch (status & SS_MASK) { - case SS_NOP: - case SS_INQ_REFRESH: - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - default: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } - break; - - case AHD_DV_STATE_BUSY: - switch (status & SS_MASK) { - case SS_NOP: - case SS_INQ_REFRESH: - AHD_SET_DV_STATE(ahd, targ, - AHD_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_TUR: - case SS_RETRY: - AHD_SET_DV_STATE(ahd, targ, targ->dv_state); - if (ahd_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) { - targ->dv_state_retry--; - } else if (targ->dv_state_retry < 60) { - if ((status & SSQ_DELAY) != 0) - ssleep(1); - } else { -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("DV BUSY reties exhausted\n"); - } -#endif - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - } - break; - default: - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } - break; - default: - printf("%s: Invalid DV completion state %d\n", ahd_name(ahd), - targ->dv_state); - AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT); - break; - } -} - -static void -ahd_linux_dv_fill_cmd(struct ahd_softc *ahd, struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo) -{ - memset(cmd, 0, sizeof(struct scsi_cmnd)); - cmd->device = ahd->platform_data->dv_scsi_dev; - cmd->scsi_done = ahd_linux_dv_complete; -} - -/* - * Synthesize an inquiry command. On the return trip, it'll be - * sniffed and the device transfer settings set for us. - */ -static void -ahd_linux_dv_inq(struct ahd_softc *ahd, struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, struct ahd_linux_target *targ, - u_int request_length) -{ - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Sending INQ\n"); - } -#endif - if (targ->inq_data == NULL) - targ->inq_data = malloc(AHD_LINUX_DV_INQ_LEN, - M_DEVBUF, M_WAITOK); - if (targ->dv_state > AHD_DV_STATE_INQ_ASYNC) { - if (targ->dv_buffer != NULL) - free(targ->dv_buffer, M_DEVBUF); - targ->dv_buffer = malloc(AHD_LINUX_DV_INQ_LEN, - M_DEVBUF, M_WAITOK); - } - - ahd_linux_dv_fill_cmd(ahd, cmd, devinfo); - cmd->sc_data_direction = DMA_FROM_DEVICE; - cmd->cmd_len = 6; - cmd->cmnd[0] = INQUIRY; - cmd->cmnd[4] = request_length; - cmd->request_bufflen = request_length; - if (targ->dv_state > AHD_DV_STATE_INQ_ASYNC) - cmd->request_buffer = targ->dv_buffer; - else - cmd->request_buffer = targ->inq_data; - memset(cmd->request_buffer, 0, AHD_LINUX_DV_INQ_LEN); -} - -static void -ahd_linux_dv_tur(struct ahd_softc *ahd, struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo) -{ - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Sending TUR\n"); - } -#endif - /* Do a TUR to clear out any non-fatal transitional state */ - ahd_linux_dv_fill_cmd(ahd, cmd, devinfo); - cmd->sc_data_direction = DMA_NONE; - cmd->cmd_len = 6; - cmd->cmnd[0] = TEST_UNIT_READY; -} - -#define AHD_REBD_LEN 4 - -static void -ahd_linux_dv_rebd(struct ahd_softc *ahd, struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, struct ahd_linux_target *targ) -{ - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Sending REBD\n"); - } -#endif - if (targ->dv_buffer != NULL) - free(targ->dv_buffer, M_DEVBUF); - targ->dv_buffer = malloc(AHD_REBD_LEN, M_DEVBUF, M_WAITOK); - ahd_linux_dv_fill_cmd(ahd, cmd, devinfo); - cmd->sc_data_direction = DMA_FROM_DEVICE; - cmd->cmd_len = 10; - cmd->cmnd[0] = READ_BUFFER; - cmd->cmnd[1] = 0x0b; - scsi_ulto3b(AHD_REBD_LEN, &cmd->cmnd[6]); - cmd->request_bufflen = AHD_REBD_LEN; - cmd->underflow = cmd->request_bufflen; - cmd->request_buffer = targ->dv_buffer; -} - -static void -ahd_linux_dv_web(struct ahd_softc *ahd, struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, struct ahd_linux_target *targ) -{ - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Sending WEB\n"); - } -#endif - ahd_linux_dv_fill_cmd(ahd, cmd, devinfo); - cmd->sc_data_direction = DMA_TO_DEVICE; - cmd->cmd_len = 10; - cmd->cmnd[0] = WRITE_BUFFER; - cmd->cmnd[1] = 0x0a; - scsi_ulto3b(targ->dv_echo_size, &cmd->cmnd[6]); - cmd->request_bufflen = targ->dv_echo_size; - cmd->underflow = cmd->request_bufflen; - cmd->request_buffer = targ->dv_buffer; -} - -static void -ahd_linux_dv_reb(struct ahd_softc *ahd, struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, struct ahd_linux_target *targ) -{ - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Sending REB\n"); - } -#endif - ahd_linux_dv_fill_cmd(ahd, cmd, devinfo); - cmd->sc_data_direction = DMA_FROM_DEVICE; - cmd->cmd_len = 10; - cmd->cmnd[0] = READ_BUFFER; - cmd->cmnd[1] = 0x0a; - scsi_ulto3b(targ->dv_echo_size, &cmd->cmnd[6]); - cmd->request_bufflen = targ->dv_echo_size; - cmd->underflow = cmd->request_bufflen; - cmd->request_buffer = targ->dv_buffer1; -} - -static void -ahd_linux_dv_su(struct ahd_softc *ahd, struct scsi_cmnd *cmd, - struct ahd_devinfo *devinfo, - struct ahd_linux_target *targ) -{ - u_int le; - - le = SID_IS_REMOVABLE(targ->inq_data) ? SSS_LOEJ : 0; - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Sending SU\n"); - } -#endif - ahd_linux_dv_fill_cmd(ahd, cmd, devinfo); - cmd->sc_data_direction = DMA_NONE; - cmd->cmd_len = 6; - cmd->cmnd[0] = START_STOP_UNIT; - cmd->cmnd[4] = le | SSS_START; -} - -static int -ahd_linux_fallback(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) -{ - struct ahd_linux_target *targ; - struct ahd_initiator_tinfo *tinfo; - struct ahd_transinfo *goal; - struct ahd_tmode_tstate *tstate; - u_int width; - u_int period; - u_int offset; - u_int ppr_options; - u_int cur_speed; - u_int wide_speed; - u_int narrow_speed; - u_int fallback_speed; - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - ahd_print_devinfo(ahd, devinfo); - printf("Trying to fallback\n"); - } -#endif - targ = ahd->platform_data->targets[devinfo->target_offset]; - tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, - devinfo->our_scsiid, - devinfo->target, &tstate); - goal = &tinfo->goal; - width = goal->width; - period = goal->period; - offset = goal->offset; - ppr_options = goal->ppr_options; - if (offset == 0) - period = AHD_ASYNC_XFER_PERIOD; - if (targ->dv_next_narrow_period == 0) - targ->dv_next_narrow_period = MAX(period, AHD_SYNCRATE_ULTRA2); - if (targ->dv_next_wide_period == 0) - targ->dv_next_wide_period = period; - if (targ->dv_max_width == 0) - targ->dv_max_width = width; - if (targ->dv_max_ppr_options == 0) - targ->dv_max_ppr_options = ppr_options; - if (targ->dv_last_ppr_options == 0) - targ->dv_last_ppr_options = ppr_options; - - cur_speed = aic_calc_speed(width, period, offset, AHD_SYNCRATE_MIN); - wide_speed = aic_calc_speed(MSG_EXT_WDTR_BUS_16_BIT, - targ->dv_next_wide_period, - MAX_OFFSET, AHD_SYNCRATE_MIN); - narrow_speed = aic_calc_speed(MSG_EXT_WDTR_BUS_8_BIT, - targ->dv_next_narrow_period, - MAX_OFFSET, AHD_SYNCRATE_MIN); - fallback_speed = aic_calc_speed(width, period+1, offset, - AHD_SYNCRATE_MIN); -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - printf("cur_speed= %d, wide_speed= %d, narrow_speed= %d, " - "fallback_speed= %d\n", cur_speed, wide_speed, - narrow_speed, fallback_speed); - } -#endif - - if (cur_speed > 160000) { - /* - * Paced/DT/IU_REQ only transfer speeds. All we - * can do is fallback in terms of syncrate. - */ - period++; - } else if (cur_speed > 80000) { - if ((ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { - /* - * Try without IU_REQ as it may be confusing - * an expander. - */ - ppr_options &= ~MSG_EXT_PPR_IU_REQ; - } else { - /* - * Paced/DT only transfer speeds. All we - * can do is fallback in terms of syncrate. - */ - period++; - ppr_options = targ->dv_max_ppr_options; - } - } else if (cur_speed > 3300) { - /* - * In this range we the following - * options ordered from highest to - * lowest desireability: - * - * o Wide/DT - * o Wide/non-DT - * o Narrow at a potentally higher sync rate. - * - * All modes are tested with and without IU_REQ - * set since using IUs may confuse an expander. + * We allow the OS to queue 2 untagged transactions to + * us at any time even though we can only execute them + * serially on the controller/device. This should + * remove some latency. */ - if ((ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { - - ppr_options &= ~MSG_EXT_PPR_IU_REQ; - } else if ((ppr_options & MSG_EXT_PPR_DT_REQ) != 0) { - /* - * Try going non-DT. - */ - ppr_options = targ->dv_max_ppr_options; - ppr_options &= ~MSG_EXT_PPR_DT_REQ; - } else if (targ->dv_last_ppr_options != 0) { - /* - * Try without QAS or any other PPR options. - * We may need a non-PPR message to work with - * an expander. We look at the "last PPR options" - * so we will perform this fallback even if the - * target responded to our PPR negotiation with - * no option bits set. - */ - ppr_options = 0; - } else if (width == MSG_EXT_WDTR_BUS_16_BIT) { - /* - * If the next narrow speed is greater than - * the next wide speed, fallback to narrow. - * Otherwise fallback to the next DT/Wide setting. - * The narrow async speed will always be smaller - * than the wide async speed, so handle this case - * specifically. - */ - ppr_options = targ->dv_max_ppr_options; - if (narrow_speed > fallback_speed - || period >= AHD_ASYNC_XFER_PERIOD) { - targ->dv_next_wide_period = period+1; - width = MSG_EXT_WDTR_BUS_8_BIT; - period = targ->dv_next_narrow_period; - } else { - period++; - } - } else if ((ahd->features & AHD_WIDE) != 0 - && targ->dv_max_width != 0 - && wide_speed >= fallback_speed - && (targ->dv_next_wide_period <= AHD_ASYNC_XFER_PERIOD - || period >= AHD_ASYNC_XFER_PERIOD)) { - - /* - * We are narrow. Try falling back - * to the next wide speed with - * all supported ppr options set. - */ - targ->dv_next_narrow_period = period+1; - width = MSG_EXT_WDTR_BUS_16_BIT; - period = targ->dv_next_wide_period; - ppr_options = targ->dv_max_ppr_options; - } else { - /* Only narrow fallback is allowed. */ - period++; - ppr_options = targ->dv_max_ppr_options; - } - } else { - return (-1); - } - offset = MAX_OFFSET; - ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_PACED); - ahd_set_width(ahd, devinfo, width, AHD_TRANS_GOAL, FALSE); - if (period == 0) { - period = 0; - offset = 0; - ppr_options = 0; - if (width == MSG_EXT_WDTR_BUS_8_BIT) - targ->dv_next_narrow_period = AHD_ASYNC_XFER_PERIOD; - else - targ->dv_next_wide_period = AHD_ASYNC_XFER_PERIOD; - } - ahd_set_syncrate(ahd, devinfo, period, offset, - ppr_options, AHD_TRANS_GOAL, FALSE); - targ->dv_last_ppr_options = ppr_options; - return (0); -} - -static void -ahd_linux_dv_timeout(struct scsi_cmnd *cmd) -{ - struct ahd_softc *ahd; - struct scb *scb; - u_long flags; - - ahd = *((struct ahd_softc **)cmd->device->host->hostdata); - ahd_lock(ahd, &flags); - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) { - printf("%s: Timeout while doing DV command %x.\n", - ahd_name(ahd), cmd->cmnd[0]); - ahd_dump_card_state(ahd); - } -#endif - - /* - * Guard against "done race". No action is - * required if we just completed. - */ - if ((scb = (struct scb *)cmd->host_scribble) == NULL) { - ahd_unlock(ahd, &flags); - return; + scsi_adjust_queue_depth(sdev, + /*NON-TAGGED*/0, + /*queue depth*/2); + break; } - - /* - * Command has not completed. Mark this - * SCB as having failing status prior to - * resetting the bus, so we get the correct - * error code. - */ - if ((scb->flags & SCB_SENSE) != 0) - ahd_set_transaction_status(scb, CAM_AUTOSENSE_FAIL); - else - ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); - ahd_reset_channel(ahd, cmd->device->channel + 'A', /*initiate*/TRUE); - - /* - * Add a minimal bus settle delay for devices that are slow to - * respond after bus resets. - */ - ahd_freeze_simq(ahd); - init_timer(&ahd->platform_data->reset_timer); - ahd->platform_data->reset_timer.data = (u_long)ahd; - ahd->platform_data->reset_timer.expires = jiffies + HZ / 2; - ahd->platform_data->reset_timer.function = - (ahd_linux_callback_t *)ahd_release_simq; - add_timer(&ahd->platform_data->reset_timer); - if (ahd_linux_next_device_to_run(ahd) != NULL) - ahd_schedule_runq(ahd); - ahd_linux_run_complete_queue(ahd); - ahd_unlock(ahd, &flags); -} - -static void -ahd_linux_dv_complete(struct scsi_cmnd *cmd) -{ - struct ahd_softc *ahd; - - ahd = *((struct ahd_softc **)cmd->device->host->hostdata); - - /* Delete the DV timer before it goes off! */ - scsi_delete_timer(cmd); - -#ifdef AHD_DEBUG - if (ahd_debug & AHD_SHOW_DV) - printf("%s:%c:%d: Command completed, status= 0x%x\n", - ahd_name(ahd), cmd->device->channel, cmd->device->id, - cmd->result); -#endif - - /* Wake up the state machine */ - up(&ahd->platform_data->dv_cmd_sem); } -static void -ahd_linux_generate_dv_pattern(struct ahd_linux_target *targ) +int +ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, + int lun, u_int tag, role_t role, uint32_t status) { - uint16_t b; - u_int i; - u_int j; - - if (targ->dv_buffer != NULL) - free(targ->dv_buffer, M_DEVBUF); - targ->dv_buffer = malloc(targ->dv_echo_size, M_DEVBUF, M_WAITOK); - if (targ->dv_buffer1 != NULL) - free(targ->dv_buffer1, M_DEVBUF); - targ->dv_buffer1 = malloc(targ->dv_echo_size, M_DEVBUF, M_WAITOK); - - i = 0; - - b = 0x0001; - for (j = 0 ; i < targ->dv_echo_size; j++) { - if (j < 32) { - /* - * 32bytes of sequential numbers. - */ - targ->dv_buffer[i++] = j & 0xff; - } else if (j < 48) { - /* - * 32bytes of repeating 0x0000, 0xffff. - */ - targ->dv_buffer[i++] = (j & 0x02) ? 0xff : 0x00; - } else if (j < 64) { - /* - * 32bytes of repeating 0x5555, 0xaaaa. - */ - targ->dv_buffer[i++] = (j & 0x02) ? 0xaa : 0x55; - } else { - /* - * Remaining buffer is filled with a repeating - * patter of: - * - * 0xffff - * ~0x0001 << shifted once in each loop. - */ - if (j & 0x02) { - if (j & 0x01) { - targ->dv_buffer[i++] = ~(b >> 8) & 0xff; - b <<= 1; - if (b == 0x0000) - b = 0x0001; - } else { - targ->dv_buffer[i++] = (~b & 0xff); - } - } else { - targ->dv_buffer[i++] = 0xff; - } - } - } + return 0; } static u_int @@ -3800,100 +1395,23 @@ ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) return (tags); } -static u_int -ahd_linux_user_dv_setting(struct ahd_softc *ahd) -{ - static int warned_user; - int dv; - - if (ahd->unit >= NUM_ELEMENTS(aic79xx_dv_settings)) { - - if (warned_user == 0) { - printf(KERN_WARNING -"aic79xx: WARNING: Insufficient dv settings instances\n" -"aic79xx: for installed controllers. Using defaults\n" -"aic79xx: Please update the aic79xx_dv_settings array in" -"aic79xx: the aic79xx_osm.c source file.\n"); - warned_user++; - } - dv = -1; - } else { - - dv = aic79xx_dv_settings[ahd->unit]; - } - - if (dv < 0) { - /* - * Apply the default. - */ - dv = 1; - if (ahd->seep_config != 0) - dv = (ahd->seep_config->bios_control & CFENABLEDV); - } - return (dv); -} - -static void -ahd_linux_setup_user_rd_strm_settings(struct ahd_softc *ahd) -{ - static int warned_user; - u_int rd_strm_mask; - u_int target_id; - - /* - * If we have specific read streaming info for this controller, - * apply it. Otherwise use the defaults. - */ - if (ahd->unit >= NUM_ELEMENTS(aic79xx_rd_strm_info)) { - - if (warned_user == 0) { - - printf(KERN_WARNING -"aic79xx: WARNING: Insufficient rd_strm instances\n" -"aic79xx: for installed controllers. Using defaults\n" -"aic79xx: Please update the aic79xx_rd_strm_info array\n" -"aic79xx: in the aic79xx_osm.c source file.\n"); - warned_user++; - } - rd_strm_mask = AIC79XX_CONFIGED_RD_STRM; - } else { - - rd_strm_mask = aic79xx_rd_strm_info[ahd->unit]; - } - for (target_id = 0; target_id < 16; target_id++) { - struct ahd_devinfo devinfo; - struct ahd_initiator_tinfo *tinfo; - struct ahd_tmode_tstate *tstate; - - tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, - target_id, &tstate); - ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, - CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); - tinfo->user.ppr_options &= ~MSG_EXT_PPR_RD_STRM; - if ((rd_strm_mask & devinfo.target_mask) != 0) - tinfo->user.ppr_options |= MSG_EXT_PPR_RD_STRM; - } -} - /* * Determines the queue depth for a given device. */ static void -ahd_linux_device_queue_depth(struct ahd_softc *ahd, - struct ahd_linux_device *dev) +ahd_linux_device_queue_depth(struct scsi_device *sdev) { struct ahd_devinfo devinfo; u_int tags; + struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); ahd_compile_devinfo(&devinfo, ahd->our_id, - dev->target->target, dev->lun, - dev->target->channel == 0 ? 'A' : 'B', + sdev->sdev_target->id, sdev->lun, + sdev->sdev_target->channel == 0 ? 'A' : 'B', ROLE_INITIATOR); tags = ahd_linux_user_tagdepth(ahd, &devinfo); - if (tags != 0 - && dev->scsi_device != NULL - && dev->scsi_device->tagged_supported != 0) { + if (tags != 0 && sdev->tagged_supported != 0) { ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED); ahd_print_devinfo(ahd, &devinfo); @@ -3903,11 +1421,10 @@ ahd_linux_device_queue_depth(struct ahd_softc *ahd, } } -static void -ahd_linux_run_device_queue(struct ahd_softc *ahd, struct ahd_linux_device *dev) +static int +ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, + struct scsi_cmnd *cmd) { - struct ahd_cmd *acmd; - struct scsi_cmnd *cmd; struct scb *scb; struct hardware_scb *hscb; struct ahd_initiator_tinfo *tinfo; @@ -3915,157 +1432,122 @@ ahd_linux_run_device_queue(struct ahd_softc *ahd, struct ahd_linux_device *dev) u_int col_idx; uint16_t mask; - if ((dev->flags & AHD_DEV_ON_RUN_LIST) != 0) - panic("running device on run list"); - - while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL - && dev->openings > 0 && dev->qfrozen == 0) { - - /* - * Schedule us to run later. The only reason we are not - * running is because the whole controller Q is frozen. - */ - if (ahd->platform_data->qfrozen != 0 - && AHD_DV_SIMQ_FROZEN(ahd) == 0) { - - TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq, - dev, links); - dev->flags |= AHD_DEV_ON_RUN_LIST; - return; - } - - cmd = &acmd_scsi_cmd(acmd); + /* + * Get an scb to use. + */ + tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, + cmd->device->id, &tstate); + if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 + || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { + col_idx = AHD_NEVER_COL_IDX; + } else { + col_idx = AHD_BUILD_COL_IDX(cmd->device->id, + cmd->device->lun); + } + if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { + ahd->flags |= AHD_RESOURCE_SHORTAGE; + return SCSI_MLQUEUE_HOST_BUSY; + } - /* - * Get an scb to use. - */ - tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, - cmd->device->id, &tstate); - if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 - || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { - col_idx = AHD_NEVER_COL_IDX; - } else { - col_idx = AHD_BUILD_COL_IDX(cmd->device->id, - cmd->device->lun); - } - if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { - TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq, - dev, links); - dev->flags |= AHD_DEV_ON_RUN_LIST; - ahd->flags |= AHD_RESOURCE_SHORTAGE; - return; - } - TAILQ_REMOVE(&dev->busyq, acmd, acmd_links.tqe); - scb->io_ctx = cmd; - scb->platform_data->dev = dev; - hscb = scb->hscb; - cmd->host_scribble = (char *)scb; + scb->io_ctx = cmd; + scb->platform_data->dev = dev; + hscb = scb->hscb; + cmd->host_scribble = (char *)scb; - /* - * Fill out basics of the HSCB. - */ - hscb->control = 0; - hscb->scsiid = BUILD_SCSIID(ahd, cmd); - hscb->lun = cmd->device->lun; - scb->hscb->task_management = 0; - mask = SCB_GET_TARGET_MASK(ahd, scb); + /* + * Fill out basics of the HSCB. + */ + hscb->control = 0; + hscb->scsiid = BUILD_SCSIID(ahd, cmd); + hscb->lun = cmd->device->lun; + scb->hscb->task_management = 0; + mask = SCB_GET_TARGET_MASK(ahd, scb); - if ((ahd->user_discenable & mask) != 0) - hscb->control |= DISCENB; + if ((ahd->user_discenable & mask) != 0) + hscb->control |= DISCENB; - if (AHD_DV_CMD(cmd) != 0) - scb->flags |= SCB_SILENT; + if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) + scb->flags |= SCB_PACKETIZED; - if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) - scb->flags |= SCB_PACKETIZED; + if ((tstate->auto_negotiate & mask) != 0) { + scb->flags |= SCB_AUTO_NEGOTIATE; + scb->hscb->control |= MK_MESSAGE; + } - if ((tstate->auto_negotiate & mask) != 0) { - scb->flags |= SCB_AUTO_NEGOTIATE; - scb->hscb->control |= MK_MESSAGE; - } + if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { + int msg_bytes; + uint8_t tag_msgs[2]; - if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) - int msg_bytes; - uint8_t tag_msgs[2]; - - msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); - if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { - hscb->control |= tag_msgs[0]; - if (tag_msgs[0] == MSG_ORDERED_TASK) - dev->commands_since_idle_or_otag = 0; - } else -#endif - if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH - && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { - hscb->control |= MSG_ORDERED_TASK; + msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); + if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { + hscb->control |= tag_msgs[0]; + if (tag_msgs[0] == MSG_ORDERED_TASK) dev->commands_since_idle_or_otag = 0; - } else { - hscb->control |= MSG_SIMPLE_TASK; - } + } else + if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH + && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { + hscb->control |= MSG_ORDERED_TASK; + dev->commands_since_idle_or_otag = 0; + } else { + hscb->control |= MSG_SIMPLE_TASK; } + } - hscb->cdb_len = cmd->cmd_len; - memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); - - scb->sg_count = 0; - ahd_set_residual(scb, 0); - ahd_set_sense_residual(scb, 0); - if (cmd->use_sg != 0) { - void *sg; - struct scatterlist *cur_seg; - u_int nseg; - int dir; - - cur_seg = (struct scatterlist *)cmd->request_buffer; - dir = cmd->sc_data_direction; - nseg = pci_map_sg(ahd->dev_softc, cur_seg, - cmd->use_sg, dir); - scb->platform_data->xfer_len = 0; - for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) { - dma_addr_t addr; - bus_size_t len; - - addr = sg_dma_address(cur_seg); - len = sg_dma_len(cur_seg); - scb->platform_data->xfer_len += len; - sg = ahd_sg_setup(ahd, scb, sg, addr, len, - /*last*/nseg == 1); - } - } else if (cmd->request_bufflen != 0) { - void *sg; + hscb->cdb_len = cmd->cmd_len; + memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); + + scb->platform_data->xfer_len = 0; + ahd_set_residual(scb, 0); + ahd_set_sense_residual(scb, 0); + scb->sg_count = 0; + if (cmd->use_sg != 0) { + void *sg; + struct scatterlist *cur_seg; + u_int nseg; + int dir; + + cur_seg = (struct scatterlist *)cmd->request_buffer; + dir = cmd->sc_data_direction; + nseg = pci_map_sg(ahd->dev_softc, cur_seg, + cmd->use_sg, dir); + scb->platform_data->xfer_len = 0; + for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) { dma_addr_t addr; - int dir; - - sg = scb->sg_list; - dir = cmd->sc_data_direction; - addr = pci_map_single(ahd->dev_softc, - cmd->request_buffer, - cmd->request_bufflen, dir); - scb->platform_data->xfer_len = cmd->request_bufflen; - scb->platform_data->buf_busaddr = addr; - sg = ahd_sg_setup(ahd, scb, sg, addr, - cmd->request_bufflen, /*last*/TRUE); - } + bus_size_t len; - LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); - dev->openings--; - dev->active++; - dev->commands_issued++; - - /* Update the error counting bucket and dump if needed */ - if (dev->target->cmds_since_error) { - dev->target->cmds_since_error++; - if (dev->target->cmds_since_error > - AHD_LINUX_ERR_THRESH) - dev->target->cmds_since_error = 0; + addr = sg_dma_address(cur_seg); + len = sg_dma_len(cur_seg); + scb->platform_data->xfer_len += len; + sg = ahd_sg_setup(ahd, scb, sg, addr, len, + /*last*/nseg == 1); } + } else if (cmd->request_bufflen != 0) { + void *sg; + dma_addr_t addr; + int dir; - if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) - dev->commands_since_idle_or_otag++; - scb->flags |= SCB_ACTIVE; - ahd_queue_scb(ahd, scb); + sg = scb->sg_list; + dir = cmd->sc_data_direction; + addr = pci_map_single(ahd->dev_softc, + cmd->request_buffer, + cmd->request_bufflen, dir); + scb->platform_data->xfer_len = cmd->request_bufflen; + scb->platform_data->buf_busaddr = addr; + sg = ahd_sg_setup(ahd, scb, sg, addr, + cmd->request_bufflen, /*last*/TRUE); } + + LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); + dev->openings--; + dev->active++; + dev->commands_issued++; + + if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) + dev->commands_since_idle_or_otag++; + scb->flags |= SCB_ACTIVE; + ahd_queue_scb(ahd, scb); + + return 0; } /* @@ -4081,9 +1563,6 @@ ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs) ahd = (struct ahd_softc *) dev_id; ahd_lock(ahd, &flags); ours = ahd_intr(ahd); - if (ahd_linux_next_device_to_run(ahd) != NULL) - ahd_schedule_runq(ahd); - ahd_linux_run_complete_queue(ahd); ahd_unlock(ahd, &flags); return IRQ_RETVAL(ours); } @@ -4092,111 +1571,6 @@ void ahd_platform_flushwork(struct ahd_softc *ahd) { - while (ahd_linux_run_complete_queue(ahd) != NULL) - ; -} - -static struct ahd_linux_target* -ahd_linux_alloc_target(struct ahd_softc *ahd, u_int channel, u_int target) -{ - struct ahd_linux_target *targ; - - targ = malloc(sizeof(*targ), M_DEVBUF, M_NOWAIT); - if (targ == NULL) - return (NULL); - memset(targ, 0, sizeof(*targ)); - targ->channel = channel; - targ->target = target; - targ->ahd = ahd; - targ->flags = AHD_DV_REQUIRED; - ahd->platform_data->targets[target] = targ; - return (targ); -} - -static void -ahd_linux_free_target(struct ahd_softc *ahd, struct ahd_linux_target *targ) -{ - struct ahd_devinfo devinfo; - struct ahd_initiator_tinfo *tinfo; - struct ahd_tmode_tstate *tstate; - u_int our_id; - u_int target_offset; - char channel; - - /* - * Force a negotiation to async/narrow on any - * future command to this device unless a bus - * reset occurs between now and that command. - */ - channel = 'A' + targ->channel; - our_id = ahd->our_id; - target_offset = targ->target; - tinfo = ahd_fetch_transinfo(ahd, channel, our_id, - targ->target, &tstate); - ahd_compile_devinfo(&devinfo, our_id, targ->target, CAM_LUN_WILDCARD, - channel, ROLE_INITIATOR); - ahd_set_syncrate(ahd, &devinfo, 0, 0, 0, - AHD_TRANS_GOAL, /*paused*/FALSE); - ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, - AHD_TRANS_GOAL, /*paused*/FALSE); - ahd_update_neg_request(ahd, &devinfo, tstate, tinfo, AHD_NEG_ALWAYS); - ahd->platform_data->targets[target_offset] = NULL; - if (targ->inq_data != NULL) - free(targ->inq_data, M_DEVBUF); - if (targ->dv_buffer != NULL) - free(targ->dv_buffer, M_DEVBUF); - if (targ->dv_buffer1 != NULL) - free(targ->dv_buffer1, M_DEVBUF); - free(targ, M_DEVBUF); -} - -static struct ahd_linux_device* -ahd_linux_alloc_device(struct ahd_softc *ahd, - struct ahd_linux_target *targ, u_int lun) -{ - struct ahd_linux_device *dev; - - dev = malloc(sizeof(*dev), M_DEVBUG, M_NOWAIT); - if (dev == NULL) - return (NULL); - memset(dev, 0, sizeof(*dev)); - init_timer(&dev->timer); - TAILQ_INIT(&dev->busyq); - dev->flags = AHD_DEV_UNCONFIGURED; - dev->lun = lun; - dev->target = targ; - - /* - * We start out life using untagged - * transactions of which we allow one. - */ - dev->openings = 1; - - /* - * Set maxtags to 0. This will be changed if we - * later determine that we are dealing with - * a tagged queuing capable device. - */ - dev->maxtags = 0; - - targ->refcount++; - targ->devices[lun] = dev; - return (dev); -} - -static void -ahd_linux_free_device(struct ahd_softc *ahd, struct ahd_linux_device *dev) -{ - struct ahd_linux_target *targ; - - del_timer(&dev->timer); - targ = dev->target; - targ->devices[dev->lun] = NULL; - free(dev, M_DEVBUF); - targ->refcount--; - if (targ->refcount == 0 - && (targ->flags & AHD_DV_REQUIRED) == 0) - ahd_linux_free_target(ahd, targ); } void @@ -4207,10 +1581,14 @@ ahd_send_async(struct ahd_softc *ahd, char channel, case AC_TRANSFER_NEG: { char buf[80]; + struct scsi_target *starget; struct ahd_linux_target *targ; struct info_str info; struct ahd_initiator_tinfo *tinfo; struct ahd_tmode_tstate *tstate; + unsigned int target_ppr_options; + + BUG_ON(target == CAM_TARGET_WILDCARD); info.buffer = buf; info.length = sizeof(buf); @@ -4234,58 +1612,47 @@ ahd_send_async(struct ahd_softc *ahd, char channel, * Don't bother reporting results that * are identical to those last reported. */ - targ = ahd->platform_data->targets[target]; - if (targ == NULL) + starget = ahd->platform_data->starget[target]; + if (starget == NULL) break; - if (tinfo->curr.period == targ->last_tinfo.period - && tinfo->curr.width == targ->last_tinfo.width - && tinfo->curr.offset == targ->last_tinfo.offset - && tinfo->curr.ppr_options == targ->last_tinfo.ppr_options) + targ = scsi_transport_target_data(starget); + + target_ppr_options = + (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) + + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) + + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) + + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) + + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) + + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) + + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) + + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); + + if (tinfo->curr.period == spi_period(starget) + && tinfo->curr.width == spi_width(starget) + && tinfo->curr.offset == spi_offset(starget) + && tinfo->curr.ppr_options == target_ppr_options) if (bootverbose == 0) break; - targ->last_tinfo.period = tinfo->curr.period; - targ->last_tinfo.width = tinfo->curr.width; - targ->last_tinfo.offset = tinfo->curr.offset; - targ->last_tinfo.ppr_options = tinfo->curr.ppr_options; - - printf("(%s:%c:", ahd_name(ahd), channel); - if (target == CAM_TARGET_WILDCARD) - printf("*): "); - else - printf("%d): ", target); - ahd_format_transinfo(&info, &tinfo->curr); - if (info.pos < info.length) - *info.buffer = '\0'; - else - buf[info.length - 1] = '\0'; - printf("%s", buf); + spi_period(starget) = tinfo->curr.period; + spi_width(starget) = tinfo->curr.width; + spi_offset(starget) = tinfo->curr.offset; + spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; + spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; + spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; + spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; + spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; + spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; + spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; + spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; + spi_display_xfer_agreement(starget); break; } case AC_SENT_BDR: { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) WARN_ON(lun != CAM_LUN_WILDCARD); scsi_report_device_reset(ahd->platform_data->host, channel - 'A', target); -#else - Scsi_Device *scsi_dev; - - /* - * Find the SCSI device associated with this - * request and indicate that a UA is expected. - */ - for (scsi_dev = ahd->platform_data->host->host_queue; - scsi_dev != NULL; scsi_dev = scsi_dev->next) { - if (channel - 'A' == scsi_dev->channel - && target == scsi_dev->id - && (lun == CAM_LUN_WILDCARD - || lun == scsi_dev->lun)) { - scsi_dev->was_reset = 1; - scsi_dev->expecting_cc_ua = 1; - } - } -#endif break; } case AC_BUS_RESET: @@ -4305,7 +1672,7 @@ ahd_send_async(struct ahd_softc *ahd, char channel, void ahd_done(struct ahd_softc *ahd, struct scb *scb) { - Scsi_Cmnd *cmd; + struct scsi_cmnd *cmd; struct ahd_linux_device *dev; if ((scb->flags & SCB_ACTIVE) == 0) { @@ -4373,19 +1740,8 @@ ahd_done(struct ahd_softc *ahd, struct scb *scb) ahd_set_transaction_status(scb, CAM_REQ_CMP); } } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { - ahd_linux_handle_scsi_status(ahd, dev, scb); - } else if (ahd_get_transaction_status(scb) == CAM_SEL_TIMEOUT) { - dev->flags |= AHD_DEV_UNCONFIGURED; - if (AHD_DV_CMD(cmd) == FALSE) - dev->target->flags &= ~AHD_DV_REQUIRED; + ahd_linux_handle_scsi_status(ahd, cmd->device, scb); } - /* - * Start DV for devices that require it assuming the first command - * sent does not result in a selection timeout. - */ - if (ahd_get_transaction_status(scb) != CAM_SEL_TIMEOUT - && (dev->target->flags & AHD_DV_REQUIRED) != 0) - ahd_linux_start_dv(ahd); if (dev->openings == 1 && ahd_get_transaction_status(scb) == CAM_REQ_CMP @@ -4406,47 +1762,32 @@ ahd_done(struct ahd_softc *ahd, struct scb *scb) if (dev->active == 0) dev->commands_since_idle_or_otag = 0; - if (TAILQ_EMPTY(&dev->busyq)) { - if ((dev->flags & AHD_DEV_UNCONFIGURED) != 0 - && dev->active == 0 - && (dev->flags & AHD_DEV_TIMER_ACTIVE) == 0) - ahd_linux_free_device(ahd, dev); - } else if ((dev->flags & AHD_DEV_ON_RUN_LIST) == 0) { - TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq, dev, links); - dev->flags |= AHD_DEV_ON_RUN_LIST; - } - if ((scb->flags & SCB_RECOVERY_SCB) != 0) { printf("Recovery SCB completes\n"); if (ahd_get_transaction_status(scb) == CAM_BDR_SENT || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); - if ((scb->platform_data->flags & AHD_SCB_UP_EH_SEM) != 0) { - scb->platform_data->flags &= ~AHD_SCB_UP_EH_SEM; + if ((ahd->platform_data->flags & AHD_SCB_UP_EH_SEM) != 0) { + ahd->platform_data->flags &= ~AHD_SCB_UP_EH_SEM; up(&ahd->platform_data->eh_sem); } } ahd_free_scb(ahd, scb); ahd_linux_queue_cmd_complete(ahd, cmd); - - if ((ahd->platform_data->flags & AHD_DV_WAIT_SIMQ_EMPTY) != 0 - && LIST_FIRST(&ahd->pending_scbs) == NULL) { - ahd->platform_data->flags &= ~AHD_DV_WAIT_SIMQ_EMPTY; - up(&ahd->platform_data->dv_sem); - } } static void ahd_linux_handle_scsi_status(struct ahd_softc *ahd, - struct ahd_linux_device *dev, struct scb *scb) + struct scsi_device *sdev, struct scb *scb) { struct ahd_devinfo devinfo; + struct ahd_linux_device *dev = scsi_transport_device_data(sdev); ahd_compile_devinfo(&devinfo, ahd->our_id, - dev->target->target, dev->lun, - dev->target->channel == 0 ? 'A' : 'B', + sdev->sdev_target->id, sdev->lun, + sdev->sdev_target->channel == 0 ? 'A' : 'B', ROLE_INITIATOR); /* @@ -4465,7 +1806,7 @@ ahd_linux_handle_scsi_status(struct ahd_softc *ahd, case SCSI_STATUS_CHECK_COND: case SCSI_STATUS_CMD_TERMINATED: { - Scsi_Cmnd *cmd; + struct scsi_cmnd *cmd; /* * Copy sense information to the OS's cmd @@ -4518,7 +1859,6 @@ ahd_linux_handle_scsi_status(struct ahd_softc *ahd, break; } case SCSI_STATUS_QUEUE_FULL: - { /* * By the time the core driver has returned this * command, all other commands that were queued @@ -4579,98 +1919,23 @@ ahd_linux_handle_scsi_status(struct ahd_softc *ahd, (dev->flags & AHD_DEV_Q_BASIC) ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); - /* FALLTHROUGH */ - } - case SCSI_STATUS_BUSY: - /* - * Set a short timer to defer sending commands for - * a bit since Linux will not delay in this case. - */ - if ((dev->flags & AHD_DEV_TIMER_ACTIVE) != 0) { - printf("%s:%c:%d: Device Timer still active during " - "busy processing\n", ahd_name(ahd), - dev->target->channel, dev->target->target); - break; - } - dev->flags |= AHD_DEV_TIMER_ACTIVE; - dev->qfrozen++; - init_timer(&dev->timer); - dev->timer.data = (u_long)dev; - dev->timer.expires = jiffies + (HZ/2); - dev->timer.function = ahd_linux_dev_timed_unfreeze; - add_timer(&dev->timer); - break; } } static void -ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, Scsi_Cmnd *cmd) +ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) { /* - * Typically, the complete queue has very few entries - * queued to it before the queue is emptied by - * ahd_linux_run_complete_queue, so sorting the entries - * by generation number should be inexpensive. - * We perform the sort so that commands that complete - * with an error are retuned in the order origionally - * queued to the controller so that any subsequent retries - * are performed in order. The underlying ahd routines do - * not guarantee the order that aborted commands will be - * returned to us. - */ - struct ahd_completeq *completeq; - struct ahd_cmd *list_cmd; - struct ahd_cmd *acmd; - - /* * Map CAM error codes into Linux Error codes. We * avoid the conversion so that the DV code has the * full error information available when making * state change decisions. */ - if (AHD_DV_CMD(cmd) == FALSE) { + { uint32_t status; u_int new_status; status = ahd_cmd_get_transaction_status(cmd); - if (status != CAM_REQ_CMP) { - struct ahd_linux_device *dev; - struct ahd_devinfo devinfo; - cam_status cam_status; - uint32_t action; - u_int scsi_status; - - dev = ahd_linux_get_device(ahd, cmd->device->channel, - cmd->device->id, - cmd->device->lun, - /*alloc*/FALSE); - - if (dev == NULL) - goto no_fallback; - - ahd_compile_devinfo(&devinfo, - ahd->our_id, - dev->target->target, dev->lun, - dev->target->channel == 0 ? 'A':'B', - ROLE_INITIATOR); - - scsi_status = ahd_cmd_get_scsi_status(cmd); - cam_status = ahd_cmd_get_transaction_status(cmd); - action = aic_error_action(cmd, dev->target->inq_data, - cam_status, scsi_status); - if ((action & SSQ_FALLBACK) != 0) { - - /* Update stats */ - dev->target->errors_detected++; - if (dev->target->cmds_since_error == 0) - dev->target->cmds_since_error++; - else { - dev->target->cmds_since_error = 0; - ahd_linux_fallback(ahd, &devinfo); - } - } - } -no_fallback: switch (status) { case CAM_REQ_INPROG: case CAM_REQ_CMP: @@ -4715,26 +1980,7 @@ no_fallback: new_status = DID_ERROR; break; case CAM_REQUEUE_REQ: - /* - * If we want the request requeued, make sure there - * are sufficent retries. In the old scsi error code, - * we used to be able to specify a result code that - * bypassed the retry count. Now we must use this - * hack. We also "fake" a check condition with - * a sense code of ABORTED COMMAND. This seems to - * evoke a retry even if this command is being sent - * via the eh thread. Ick! Ick! Ick! - */ - if (cmd->retries > 0) - cmd->retries--; - new_status = DID_OK; - ahd_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND); - cmd->result |= (DRIVER_SENSE << 24); - memset(cmd->sense_buffer, 0, - sizeof(cmd->sense_buffer)); - cmd->sense_buffer[0] = SSD_ERRCODE_VALID - | SSD_CURRENT_ERROR; - cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND; + new_status = DID_REQUEUE; break; default: /* We should never get here */ @@ -4745,116 +1991,23 @@ no_fallback: ahd_cmd_set_transaction_status(cmd, new_status); } - completeq = &ahd->platform_data->completeq; - list_cmd = TAILQ_FIRST(completeq); - acmd = (struct ahd_cmd *)cmd; - while (list_cmd != NULL - && acmd_scsi_cmd(list_cmd).serial_number - < acmd_scsi_cmd(acmd).serial_number) - list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe); - if (list_cmd != NULL) - TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe); - else - TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe); + cmd->scsi_done(cmd); } static void -ahd_linux_filter_inquiry(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) +ahd_linux_sem_timeout(u_long arg) { - struct scsi_inquiry_data *sid; - struct ahd_initiator_tinfo *tinfo; - struct ahd_transinfo *user; - struct ahd_transinfo *goal; - struct ahd_transinfo *curr; - struct ahd_tmode_tstate *tstate; - struct ahd_linux_device *dev; - u_int width; - u_int period; - u_int offset; - u_int ppr_options; - u_int trans_version; - u_int prot_version; - - /* - * Determine if this lun actually exists. If so, - * hold on to its corresponding device structure. - * If not, make sure we release the device and - * don't bother processing the rest of this inquiry - * command. - */ - dev = ahd_linux_get_device(ahd, devinfo->channel - 'A', - devinfo->target, devinfo->lun, - /*alloc*/TRUE); - - sid = (struct scsi_inquiry_data *)dev->target->inq_data; - if (SID_QUAL(sid) == SID_QUAL_LU_CONNECTED) { - - dev->flags &= ~AHD_DEV_UNCONFIGURED; - } else { - dev->flags |= AHD_DEV_UNCONFIGURED; - return; - } + struct ahd_softc *ahd; + u_long s; - /* - * Update our notion of this device's transfer - * negotiation capabilities. - */ - tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, - devinfo->our_scsiid, - devinfo->target, &tstate); - user = &tinfo->user; - goal = &tinfo->goal; - curr = &tinfo->curr; - width = user->width; - period = user->period; - offset = user->offset; - ppr_options = user->ppr_options; - trans_version = user->transport_version; - prot_version = MIN(user->protocol_version, SID_ANSI_REV(sid)); + ahd = (struct ahd_softc *)arg; - /* - * Only attempt SPI3/4 once we've verified that - * the device claims to support SPI3/4 features. - */ - if (prot_version < SCSI_REV_2) - trans_version = SID_ANSI_REV(sid); - else - trans_version = SCSI_REV_2; - - if ((sid->flags & SID_WBus16) == 0) - width = MSG_EXT_WDTR_BUS_8_BIT; - if ((sid->flags & SID_Sync) == 0) { - period = 0; - offset = 0; - ppr_options = 0; - } - if ((sid->spi3data & SID_SPI_QAS) == 0) - ppr_options &= ~MSG_EXT_PPR_QAS_REQ; - if ((sid->spi3data & SID_SPI_CLOCK_DT) == 0) - ppr_options &= MSG_EXT_PPR_QAS_REQ; - if ((sid->spi3data & SID_SPI_IUS) == 0) - ppr_options &= (MSG_EXT_PPR_DT_REQ - | MSG_EXT_PPR_QAS_REQ); - - if (prot_version > SCSI_REV_2 - && ppr_options != 0) - trans_version = user->transport_version; - - ahd_validate_width(ahd, /*tinfo limit*/NULL, &width, ROLE_UNKNOWN); - ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX); - ahd_validate_offset(ahd, /*tinfo limit*/NULL, period, - &offset, width, ROLE_UNKNOWN); - if (offset == 0 || period == 0) { - period = 0; - offset = 0; - ppr_options = 0; + ahd_lock(ahd, &s); + if ((ahd->platform_data->flags & AHD_SCB_UP_EH_SEM) != 0) { + ahd->platform_data->flags &= ~AHD_SCB_UP_EH_SEM; + up(&ahd->platform_data->eh_sem); } - /* Apply our filtered user settings. */ - curr->transport_version = trans_version; - curr->protocol_version = prot_version; - ahd_set_width(ahd, devinfo, width, AHD_TRANS_GOAL, /*paused*/FALSE); - ahd_set_syncrate(ahd, devinfo, period, offset, ppr_options, - AHD_TRANS_GOAL, /*paused*/FALSE); + ahd_unlock(ahd, &s); } void @@ -4882,12 +2035,6 @@ ahd_release_simq(struct ahd_softc *ahd) if (ahd->platform_data->qfrozen == 0) { unblock_reqs = 1; } - if (AHD_DV_SIMQ_FROZEN(ahd) - && ((ahd->platform_data->flags & AHD_DV_WAIT_SIMQ_RELEASE) != 0)) { - ahd->platform_data->flags &= ~AHD_DV_WAIT_SIMQ_RELEASE; - up(&ahd->platform_data->dv_sem); - } - ahd_schedule_runq(ahd); ahd_unlock(ahd, &s); /* * There is still a race here. The mid-layer @@ -4899,118 +2046,743 @@ ahd_release_simq(struct ahd_softc *ahd) scsi_unblock_requests(ahd->platform_data->host); } -static void -ahd_linux_sem_timeout(u_long arg) +static int +ahd_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag) { - struct scb *scb; - struct ahd_softc *ahd; - u_long s; + struct ahd_softc *ahd; + struct ahd_linux_device *dev; + struct scb *pending_scb; + u_int saved_scbptr; + u_int active_scbptr; + u_int last_phase; + u_int saved_scsiid; + u_int cdb_byte; + int retval; + int was_paused; + int paused; + int wait; + int disconnected; + ahd_mode_state saved_modes; - scb = (struct scb *)arg; - ahd = scb->ahd_softc; - ahd_lock(ahd, &s); - if ((scb->platform_data->flags & AHD_SCB_UP_EH_SEM) != 0) { - scb->platform_data->flags &= ~AHD_SCB_UP_EH_SEM; - up(&ahd->platform_data->eh_sem); + pending_scb = NULL; + paused = FALSE; + wait = FALSE; + ahd = *(struct ahd_softc **)cmd->device->host->hostdata; + + printf("%s:%d:%d:%d: Attempting to queue a%s message:", + ahd_name(ahd), cmd->device->channel, + cmd->device->id, cmd->device->lun, + flag == SCB_ABORT ? "n ABORT" : " TARGET RESET"); + + printf("CDB:"); + for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) + printf(" 0x%x", cmd->cmnd[cdb_byte]); + printf("\n"); + + spin_lock_irq(&ahd->platform_data->spin_lock); + + /* + * First determine if we currently own this command. + * Start by searching the device queue. If not found + * there, check the pending_scb list. If not found + * at all, and the system wanted us to just abort the + * command, return success. + */ + dev = scsi_transport_device_data(cmd->device); + + if (dev == NULL) { + /* + * No target device for this command exists, + * so we must not still own the command. + */ + printf("%s:%d:%d:%d: Is not an active device\n", + ahd_name(ahd), cmd->device->channel, cmd->device->id, + cmd->device->lun); + retval = SUCCESS; + goto no_cmd; } - ahd_unlock(ahd, &s); + + /* + * See if we can find a matching cmd in the pending list. + */ + LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { + if (pending_scb->io_ctx == cmd) + break; + } + + if (pending_scb == NULL && flag == SCB_DEVICE_RESET) { + + /* Any SCB for this device will do for a target reset */ + LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { + if (ahd_match_scb(ahd, pending_scb, cmd->device->id, + cmd->device->channel + 'A', + CAM_LUN_WILDCARD, + SCB_LIST_NULL, ROLE_INITIATOR) == 0) + break; + } + } + + if (pending_scb == NULL) { + printf("%s:%d:%d:%d: Command not found\n", + ahd_name(ahd), cmd->device->channel, cmd->device->id, + cmd->device->lun); + goto no_cmd; + } + + if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { + /* + * We can't queue two recovery actions using the same SCB + */ + retval = FAILED; + goto done; + } + + /* + * Ensure that the card doesn't do anything + * behind our back. Also make sure that we + * didn't "just" miss an interrupt that would + * affect this cmd. + */ + was_paused = ahd_is_paused(ahd); + ahd_pause_and_flushwork(ahd); + paused = TRUE; + + if ((pending_scb->flags & SCB_ACTIVE) == 0) { + printf("%s:%d:%d:%d: Command already completed\n", + ahd_name(ahd), cmd->device->channel, cmd->device->id, + cmd->device->lun); + goto no_cmd; + } + + printf("%s: At time of recovery, card was %spaused\n", + ahd_name(ahd), was_paused ? "" : "not "); + ahd_dump_card_state(ahd); + + disconnected = TRUE; + if (flag == SCB_ABORT) { + if (ahd_search_qinfifo(ahd, cmd->device->id, + cmd->device->channel + 'A', + cmd->device->lun, + pending_scb->hscb->tag, + ROLE_INITIATOR, CAM_REQ_ABORTED, + SEARCH_COMPLETE) > 0) { + printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", + ahd_name(ahd), cmd->device->channel, + cmd->device->id, cmd->device->lun); + retval = SUCCESS; + goto done; + } + } else if (ahd_search_qinfifo(ahd, cmd->device->id, + cmd->device->channel + 'A', + cmd->device->lun, pending_scb->hscb->tag, + ROLE_INITIATOR, /*status*/0, + SEARCH_COUNT) > 0) { + disconnected = FALSE; + } + + saved_modes = ahd_save_modes(ahd); + ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); + last_phase = ahd_inb(ahd, LASTPHASE); + saved_scbptr = ahd_get_scbptr(ahd); + active_scbptr = saved_scbptr; + if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { + struct scb *bus_scb; + + bus_scb = ahd_lookup_scb(ahd, active_scbptr); + if (bus_scb == pending_scb) + disconnected = FALSE; + else if (flag != SCB_ABORT + && ahd_inb(ahd, SAVED_SCSIID) == pending_scb->hscb->scsiid + && ahd_inb(ahd, SAVED_LUN) == SCB_GET_LUN(pending_scb)) + disconnected = FALSE; + } + + /* + * At this point, pending_scb is the scb associated with the + * passed in command. That command is currently active on the + * bus or is in the disconnected state. + */ + saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); + if (last_phase != P_BUSFREE + && (SCB_GET_TAG(pending_scb) == active_scbptr + || (flag == SCB_DEVICE_RESET + && SCSIID_TARGET(ahd, saved_scsiid) == cmd->device->id))) { + + /* + * We're active on the bus, so assert ATN + * and hope that the target responds. + */ + pending_scb = ahd_lookup_scb(ahd, active_scbptr); + pending_scb->flags |= SCB_RECOVERY_SCB|flag; + ahd_outb(ahd, MSG_OUT, HOST_MSG); + ahd_outb(ahd, SCSISIGO, last_phase|ATNO); + printf("%s:%d:%d:%d: Device is active, asserting ATN\n", + ahd_name(ahd), cmd->device->channel, + cmd->device->id, cmd->device->lun); + wait = TRUE; + } else if (disconnected) { + + /* + * Actually re-queue this SCB in an attempt + * to select the device before it reconnects. + */ + pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; + ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); + pending_scb->hscb->cdb_len = 0; + pending_scb->hscb->task_attribute = 0; + pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; + + if ((pending_scb->flags & SCB_PACKETIZED) != 0) { + /* + * Mark the SCB has having an outstanding + * task management function. Should the command + * complete normally before the task management + * function can be sent, the host will be notified + * to abort our requeued SCB. + */ + ahd_outb(ahd, SCB_TASK_MANAGEMENT, + pending_scb->hscb->task_management); + } else { + /* + * If non-packetized, set the MK_MESSAGE control + * bit indicating that we desire to send a message. + * We also set the disconnected flag since there is + * no guarantee that our SCB control byte matches + * the version on the card. We don't want the + * sequencer to abort the command thinking an + * unsolicited reselection occurred. + */ + pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; + + /* + * The sequencer will never re-reference the + * in-core SCB. To make sure we are notified + * during reslection, set the MK_MESSAGE flag in + * the card's copy of the SCB. + */ + ahd_outb(ahd, SCB_CONTROL, + ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); + } + + /* + * Clear out any entries in the QINFIFO first + * so we are the next SCB for this target + * to run. + */ + ahd_search_qinfifo(ahd, cmd->device->id, + cmd->device->channel + 'A', cmd->device->lun, + SCB_LIST_NULL, ROLE_INITIATOR, + CAM_REQUEUE_REQ, SEARCH_COMPLETE); + ahd_qinfifo_requeue_tail(ahd, pending_scb); + ahd_set_scbptr(ahd, saved_scbptr); + ahd_print_path(ahd, pending_scb); + printf("Device is disconnected, re-queuing SCB\n"); + wait = TRUE; + } else { + printf("%s:%d:%d:%d: Unable to deliver message\n", + ahd_name(ahd), cmd->device->channel, + cmd->device->id, cmd->device->lun); + retval = FAILED; + goto done; + } + +no_cmd: + /* + * Our assumption is that if we don't have the command, no + * recovery action was required, so we return success. Again, + * the semantics of the mid-layer recovery engine are not + * well defined, so this may change in time. + */ + retval = SUCCESS; +done: + if (paused) + ahd_unpause(ahd); + if (wait) { + struct timer_list timer; + int ret; + + ahd->platform_data->flags |= AHD_SCB_UP_EH_SEM; + spin_unlock_irq(&ahd->platform_data->spin_lock); + init_timer(&timer); + timer.data = (u_long)ahd; + timer.expires = jiffies + (5 * HZ); + timer.function = ahd_linux_sem_timeout; + add_timer(&timer); + printf("Recovery code sleeping\n"); + down(&ahd->platform_data->eh_sem); + printf("Recovery code awake\n"); + ret = del_timer_sync(&timer); + if (ret == 0) { + printf("Timer Expired\n"); + retval = FAILED; + } + spin_lock_irq(&ahd->platform_data->spin_lock); + } + spin_unlock_irq(&ahd->platform_data->spin_lock); + return (retval); } -static void -ahd_linux_dev_timed_unfreeze(u_long arg) +static void ahd_linux_set_width(struct scsi_target *starget, int width) { - struct ahd_linux_device *dev; - struct ahd_softc *ahd; - u_long s; + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_devinfo devinfo; + unsigned long flags; - dev = (struct ahd_linux_device *)arg; - ahd = dev->target->ahd; - ahd_lock(ahd, &s); - dev->flags &= ~AHD_DEV_TIMER_ACTIVE; - if (dev->qfrozen > 0) - dev->qfrozen--; - if (dev->qfrozen == 0 - && (dev->flags & AHD_DEV_ON_RUN_LIST) == 0) - ahd_linux_run_device_queue(ahd, dev); - if ((dev->flags & AHD_DEV_UNCONFIGURED) != 0 - && dev->active == 0) - ahd_linux_free_device(ahd, dev); - ahd_unlock(ahd, &s); + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahd_lock(ahd, &flags); + ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); } -void -ahd_platform_dump_card_state(struct ahd_softc *ahd) +static void ahd_linux_set_period(struct scsi_target *starget, int period) { - struct ahd_linux_device *dev; - int target; - int maxtarget; - int lun; - int i; - - maxtarget = (ahd->features & AHD_WIDE) ? 15 : 7; - for (target = 0; target <=maxtarget; target++) { - - for (lun = 0; lun < AHD_NUM_LUNS; lun++) { - struct ahd_cmd *acmd; - - dev = ahd_linux_get_device(ahd, 0, target, - lun, /*alloc*/FALSE); - if (dev == NULL) - continue; - - printf("DevQ(%d:%d:%d): ", 0, target, lun); - i = 0; - TAILQ_FOREACH(acmd, &dev->busyq, acmd_links.tqe) { - if (i++ > AHD_SCB_MAX) - break; - } - printf("%d waiting\n", i); - } + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options; + unsigned int dt; + unsigned long flags; + unsigned long offset = tinfo->goal.offset; + +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: set period to %d\n", ahd_name(ahd), period); +#endif + if (offset == 0) + offset = MAX_OFFSET; + + if (period < 8) + period = 8; + if (period < 10) { + ppr_options |= MSG_EXT_PPR_DT_REQ; + if (period == 8) + ppr_options |= MSG_EXT_PPR_IU_REQ; } + + dt = ppr_options & MSG_EXT_PPR_DT_REQ; + + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + + /* all PPR requests apart from QAS require wide transfers */ + if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { + if (spi_width(starget) == 0) + ppr_options &= MSG_EXT_PPR_QAS_REQ; + } + + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); + + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, offset, + ppr_options, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); } -static int __init -ahd_linux_init(void) +static void ahd_linux_set_offset(struct scsi_target *starget, int offset) { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) - return ahd_linux_detect(&aic79xx_driver_template); -#else - scsi_register_module(MODULE_SCSI_HA, &aic79xx_driver_template); - if (aic79xx_driver_template.present == 0) { - scsi_unregister_module(MODULE_SCSI_HA, - &aic79xx_driver_template); - return (-ENODEV); + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = 0; + unsigned int period = 0; + unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; + unsigned long flags; + +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: set offset to %d\n", ahd_name(ahd), offset); +#endif + + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + if (offset != 0) { + period = tinfo->goal.period; + ppr_options = tinfo->goal.ppr_options; + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); } - return (0); + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, + AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); +} + +static void ahd_linux_set_dt(struct scsi_target *starget, int dt) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_DT_REQ; + unsigned int period = tinfo->goal.period; + unsigned int width = tinfo->goal.width; + unsigned long flags; + +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: %s DT\n", ahd_name(ahd), + dt ? "enabling" : "disabling"); +#endif + if (dt) { + ppr_options |= MSG_EXT_PPR_DT_REQ; + if (!width) + ahd_linux_set_width(starget, 1); + } else { + if (period <= 9) + period = 10; /* If resetting DT, period must be >= 25ns */ + /* IU is invalid without DT set */ + ppr_options &= ~MSG_EXT_PPR_IU_REQ; + } + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); + + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, + ppr_options, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); +} + +static void ahd_linux_set_qas(struct scsi_target *starget, int qas) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_QAS_REQ; + unsigned int period = tinfo->goal.period; + unsigned int dt; + unsigned long flags; + +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: %s QAS\n", ahd_name(ahd), + qas ? "enabling" : "disabling"); +#endif + + if (qas) { + ppr_options |= MSG_EXT_PPR_QAS_REQ; + } + + dt = ppr_options & MSG_EXT_PPR_DT_REQ; + + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); + + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, + ppr_options, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); +} + +static void ahd_linux_set_iu(struct scsi_target *starget, int iu) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_IU_REQ; + unsigned int period = tinfo->goal.period; + unsigned int dt; + unsigned long flags; + +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: %s IU\n", ahd_name(ahd), + iu ? "enabling" : "disabling"); #endif + + if (iu) { + ppr_options |= MSG_EXT_PPR_IU_REQ; + ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ + } + + dt = ppr_options & MSG_EXT_PPR_DT_REQ; + + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); + + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, + ppr_options, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); } -static void __exit -ahd_linux_exit(void) +static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) { - struct ahd_softc *ahd; + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_RD_STRM; + unsigned int period = tinfo->goal.period; + unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; + unsigned long flags; - /* - * Shutdown DV threads before going into the SCSI mid-layer. - * This avoids situations where the mid-layer locks the entire - * kernel so that waiting for our DV threads to exit leads - * to deadlock. - */ - TAILQ_FOREACH(ahd, &ahd_tailq, links) { +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: %s Read Streaming\n", ahd_name(ahd), + rdstrm ? "enabling" : "disabling"); +#endif + + if (rdstrm) + ppr_options |= MSG_EXT_PPR_RD_STRM; + + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); - ahd_linux_kill_dv_thread(ahd); + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, + ppr_options, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); +} + +static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_WR_FLOW; + unsigned int period = tinfo->goal.period; + unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; + unsigned long flags; + +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: %s Write Flow Control\n", ahd_name(ahd), + wrflow ? "enabling" : "disabling"); +#endif + + if (wrflow) + ppr_options |= MSG_EXT_PPR_WR_FLOW; + + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); + + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, + ppr_options, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); +} + +static void ahd_linux_set_rti(struct scsi_target *starget, int rti) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_RTI; + unsigned int period = tinfo->goal.period; + unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; + unsigned long flags; + + if ((ahd->features & AHD_RTI) == 0) { +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: RTI not available\n", ahd_name(ahd)); +#endif + return; } -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: %s RTI\n", ahd_name(ahd), + rti ? "enabling" : "disabling"); +#endif + + if (rti) + ppr_options |= MSG_EXT_PPR_RTI; + + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); + + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, + ppr_options, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); +} + +static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_PCOMP_EN; + unsigned int period = tinfo->goal.period; + unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; + unsigned long flags; + +#ifdef AHD_DEBUG + if ((ahd_debug & AHD_SHOW_DV) != 0) + printf("%s: %s Precompensation\n", ahd_name(ahd), + pcomp ? "Enable" : "Disable"); +#endif + + if (pcomp) + ppr_options |= MSG_EXT_PPR_PCOMP_EN; + + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); + + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, + ppr_options, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); +} + +static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); + struct ahd_tmode_tstate *tstate; + struct ahd_initiator_tinfo *tinfo + = ahd_fetch_transinfo(ahd, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahd_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_HOLD_MCS; + unsigned int period = tinfo->goal.period; + unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; + unsigned long flags; + + if (hold) + ppr_options |= MSG_EXT_PPR_HOLD_MCS; + + ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahd_find_syncrate(ahd, &period, &ppr_options, + dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); + + ahd_lock(ahd, &flags); + ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, + ppr_options, AHD_TRANS_GOAL, FALSE); + ahd_unlock(ahd, &flags); +} + + + +static struct spi_function_template ahd_linux_transport_functions = { + .set_offset = ahd_linux_set_offset, + .show_offset = 1, + .set_period = ahd_linux_set_period, + .show_period = 1, + .set_width = ahd_linux_set_width, + .show_width = 1, + .set_dt = ahd_linux_set_dt, + .show_dt = 1, + .set_iu = ahd_linux_set_iu, + .show_iu = 1, + .set_qas = ahd_linux_set_qas, + .show_qas = 1, + .set_rd_strm = ahd_linux_set_rd_strm, + .show_rd_strm = 1, + .set_wr_flow = ahd_linux_set_wr_flow, + .show_wr_flow = 1, + .set_rti = ahd_linux_set_rti, + .show_rti = 1, + .set_pcomp_en = ahd_linux_set_pcomp_en, + .show_pcomp_en = 1, + .set_hold_mcs = ahd_linux_set_hold_mcs, + .show_hold_mcs = 1, +}; + +static int __init +ahd_linux_init(void) +{ + int error = 0; + /* - * In 2.4 we have to unregister from the PCI core _after_ - * unregistering from the scsi midlayer to avoid dangling - * references. + * If we've been passed any parameters, process them now. */ - scsi_unregister_module(MODULE_SCSI_HA, &aic79xx_driver_template); -#endif + if (aic79xx) + aic79xx_setup(aic79xx); + + ahd_linux_transport_template = + spi_attach_transport(&ahd_linux_transport_functions); + if (!ahd_linux_transport_template) + return -ENODEV; + + scsi_transport_reserve_target(ahd_linux_transport_template, + sizeof(struct ahd_linux_target)); + scsi_transport_reserve_device(ahd_linux_transport_template, + sizeof(struct ahd_linux_device)); + + error = ahd_linux_pci_init(); + if (error) + spi_release_transport(ahd_linux_transport_template); + return error; +} + +static void __exit +ahd_linux_exit(void) +{ ahd_linux_pci_exit(); + spi_release_transport(ahd_linux_transport_template); } module_init(ahd_linux_init); |