diff options
Diffstat (limited to 'drivers/scsi/gvp11.c')
-rw-r--r-- | drivers/scsi/gvp11.c | 541 |
1 files changed, 286 insertions, 255 deletions
diff --git a/drivers/scsi/gvp11.c b/drivers/scsi/gvp11.c index 18b7102bb80..2ce26eb7a1e 100644 --- a/drivers/scsi/gvp11.c +++ b/drivers/scsi/gvp11.c @@ -1,36 +1,35 @@ #include <linux/types.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/blkdev.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/zorro.h> -#include <asm/setup.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/amigaints.h> #include <asm/amigahw.h> -#include <linux/zorro.h> -#include <asm/irq.h> -#include <linux/spinlock.h> #include "scsi.h" -#include <scsi/scsi_host.h> #include "wd33c93.h" #include "gvp11.h" -#include <linux/stat.h> +#define CHECK_WD33C93 -#define DMA(ptr) ((gvp11_scsiregs *)((ptr)->base)) +struct gvp11_hostdata { + struct WD33C93_hostdata wh; + struct gvp11_scsiregs *regs; +}; -static irqreturn_t gvp11_intr(int irq, void *_instance) +static irqreturn_t gvp11_intr(int irq, void *data) { + struct Scsi_Host *instance = data; + struct gvp11_hostdata *hdata = shost_priv(instance); + unsigned int status = hdata->regs->CNTR; unsigned long flags; - unsigned int status; - struct Scsi_Host *instance = (struct Scsi_Host *)_instance; - status = DMA(instance)->CNTR; if (!(status & GVP11_DMAC_INT_PENDING)) return IRQ_NONE; @@ -50,64 +49,66 @@ void gvp11_setup(char *str, int *ints) static int dma_setup(struct scsi_cmnd *cmd, int dir_in) { struct Scsi_Host *instance = cmd->device->host; - struct WD33C93_hostdata *hdata = shost_priv(instance); + struct gvp11_hostdata *hdata = shost_priv(instance); + struct WD33C93_hostdata *wh = &hdata->wh; + struct gvp11_scsiregs *regs = hdata->regs; unsigned short cntr = GVP11_DMAC_INT_ENABLE; unsigned long addr = virt_to_bus(cmd->SCp.ptr); int bank_mask; static int scsi_alloc_out_of_range = 0; /* use bounce buffer if the physical address is bad */ - if (addr & hdata->dma_xfer_mask) { - hdata->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff; + if (addr & wh->dma_xfer_mask) { + wh->dma_bounce_len = (cmd->SCp.this_residual + 511) & ~0x1ff; if (!scsi_alloc_out_of_range) { - hdata->dma_bounce_buffer = - kmalloc(hdata->dma_bounce_len, GFP_KERNEL); - hdata->dma_buffer_pool = BUF_SCSI_ALLOCED; + wh->dma_bounce_buffer = + kmalloc(wh->dma_bounce_len, GFP_KERNEL); + wh->dma_buffer_pool = BUF_SCSI_ALLOCED; } if (scsi_alloc_out_of_range || - !hdata->dma_bounce_buffer) { - hdata->dma_bounce_buffer = - amiga_chip_alloc(hdata->dma_bounce_len, + !wh->dma_bounce_buffer) { + wh->dma_bounce_buffer = + amiga_chip_alloc(wh->dma_bounce_len, "GVP II SCSI Bounce Buffer"); - if (!hdata->dma_bounce_buffer) { - hdata->dma_bounce_len = 0; + if (!wh->dma_bounce_buffer) { + wh->dma_bounce_len = 0; return 1; } - hdata->dma_buffer_pool = BUF_CHIP_ALLOCED; + wh->dma_buffer_pool = BUF_CHIP_ALLOCED; } /* check if the address of the bounce buffer is OK */ - addr = virt_to_bus(hdata->dma_bounce_buffer); + addr = virt_to_bus(wh->dma_bounce_buffer); - if (addr & hdata->dma_xfer_mask) { + if (addr & wh->dma_xfer_mask) { /* fall back to Chip RAM if address out of range */ - if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED) { - kfree(hdata->dma_bounce_buffer); + if (wh->dma_buffer_pool == BUF_SCSI_ALLOCED) { + kfree(wh->dma_bounce_buffer); scsi_alloc_out_of_range = 1; } else { - amiga_chip_free(hdata->dma_bounce_buffer); + amiga_chip_free(wh->dma_bounce_buffer); } - hdata->dma_bounce_buffer = - amiga_chip_alloc(hdata->dma_bounce_len, + wh->dma_bounce_buffer = + amiga_chip_alloc(wh->dma_bounce_len, "GVP II SCSI Bounce Buffer"); - if (!hdata->dma_bounce_buffer) { - hdata->dma_bounce_len = 0; + if (!wh->dma_bounce_buffer) { + wh->dma_bounce_len = 0; return 1; } - addr = virt_to_bus(hdata->dma_bounce_buffer); - hdata->dma_buffer_pool = BUF_CHIP_ALLOCED; + addr = virt_to_bus(wh->dma_bounce_buffer); + wh->dma_buffer_pool = BUF_CHIP_ALLOCED; } if (!dir_in) { /* copy to bounce buffer for a write */ - memcpy(hdata->dma_bounce_buffer, cmd->SCp.ptr, + memcpy(wh->dma_bounce_buffer, cmd->SCp.ptr, cmd->SCp.this_residual); } } @@ -116,11 +117,11 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in) if (!dir_in) cntr |= GVP11_DMAC_DIR_WRITE; - hdata->dma_dir = dir_in; - DMA(cmd->device->host)->CNTR = cntr; + wh->dma_dir = dir_in; + regs->CNTR = cntr; /* setup DMA *physical* address */ - DMA(cmd->device->host)->ACR = addr; + regs->ACR = addr; if (dir_in) { /* invalidate any cache */ @@ -130,12 +131,12 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in) cache_push(addr, cmd->SCp.this_residual); } - bank_mask = (~hdata->dma_xfer_mask >> 18) & 0x01c0; + bank_mask = (~wh->dma_xfer_mask >> 18) & 0x01c0; if (bank_mask) - DMA(cmd->device->host)->BANK = bank_mask & (addr >> 18); + regs->BANK = bank_mask & (addr >> 18); /* start DMA */ - DMA(cmd->device->host)->ST_DMA = 1; + regs->ST_DMA = 1; /* return success */ return 0; @@ -144,236 +145,53 @@ static int dma_setup(struct scsi_cmnd *cmd, int dir_in) static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, int status) { - struct WD33C93_hostdata *hdata = shost_priv(instance); + struct gvp11_hostdata *hdata = shost_priv(instance); + struct WD33C93_hostdata *wh = &hdata->wh; + struct gvp11_scsiregs *regs = hdata->regs; /* stop DMA */ - DMA(instance)->SP_DMA = 1; + regs->SP_DMA = 1; /* remove write bit from CONTROL bits */ - DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE; + regs->CNTR = GVP11_DMAC_INT_ENABLE; /* copy from a bounce buffer, if necessary */ - if (status && hdata->dma_bounce_buffer) { - if (hdata->dma_dir && SCpnt) - memcpy(SCpnt->SCp.ptr, hdata->dma_bounce_buffer, + if (status && wh->dma_bounce_buffer) { + if (wh->dma_dir && SCpnt) + memcpy(SCpnt->SCp.ptr, wh->dma_bounce_buffer, SCpnt->SCp.this_residual); - if (hdata->dma_buffer_pool == BUF_SCSI_ALLOCED) - kfree(hdata->dma_bounce_buffer); - else - amiga_chip_free(hdata->dma_bounce_buffer); - - hdata->dma_bounce_buffer = NULL; - hdata->dma_bounce_len = 0; - } -} - -#define CHECK_WD33C93 - -int __init gvp11_detect(struct scsi_host_template *tpnt) -{ - static unsigned char called = 0; - struct Scsi_Host *instance; - unsigned long address; - unsigned int epc; - struct zorro_dev *z = NULL; - unsigned int default_dma_xfer_mask; - struct WD33C93_hostdata *hdata; - wd33c93_regs regs; - int num_gvp11 = 0; -#ifdef CHECK_WD33C93 - volatile unsigned char *sasr_3393, *scmd_3393; - unsigned char save_sasr; - unsigned char q, qq; -#endif - - if (!MACH_IS_AMIGA || called) - return 0; - called = 1; - - tpnt->proc_name = "GVP11"; - tpnt->proc_info = &wd33c93_proc_info; - - while ((z = zorro_find_device(ZORRO_WILDCARD, z))) { - /* - * This should (hopefully) be the correct way to identify - * all the different GVP SCSI controllers (except for the - * SERIES I though). - */ - - if (z->id == ZORRO_PROD_GVP_COMBO_030_R3_SCSI || - z->id == ZORRO_PROD_GVP_SERIES_II) - default_dma_xfer_mask = ~0x00ffffff; - else if (z->id == ZORRO_PROD_GVP_GFORCE_030_SCSI || - z->id == ZORRO_PROD_GVP_A530_SCSI || - z->id == ZORRO_PROD_GVP_COMBO_030_R4_SCSI) - default_dma_xfer_mask = ~0x01ffffff; - else if (z->id == ZORRO_PROD_GVP_A1291 || - z->id == ZORRO_PROD_GVP_GFORCE_040_SCSI_1) - default_dma_xfer_mask = ~0x07ffffff; + if (wh->dma_buffer_pool == BUF_SCSI_ALLOCED) + kfree(wh->dma_bounce_buffer); else - continue; - - /* - * Rumors state that some GVP ram boards use the same product - * code as the SCSI controllers. Therefore if the board-size - * is not 64KB we asume it is a ram board and bail out. - */ - if (z->resource.end - z->resource.start != 0xffff) - continue; + amiga_chip_free(wh->dma_bounce_buffer); - address = z->resource.start; - if (!request_mem_region(address, 256, "wd33c93")) - continue; - -#ifdef CHECK_WD33C93 - - /* - * These darn GVP boards are a problem - it can be tough to tell - * whether or not they include a SCSI controller. This is the - * ultimate Yet-Another-GVP-Detection-Hack in that it actually - * probes for a WD33c93 chip: If we find one, it's extremely - * likely that this card supports SCSI, regardless of Product_ - * Code, Board_Size, etc. - */ - - /* Get pointers to the presumed register locations and save contents */ - - sasr_3393 = &(((gvp11_scsiregs *)(ZTWO_VADDR(address)))->SASR); - scmd_3393 = &(((gvp11_scsiregs *)(ZTWO_VADDR(address)))->SCMD); - save_sasr = *sasr_3393; - - /* First test the AuxStatus Reg */ - - q = *sasr_3393; /* read it */ - if (q & 0x08) /* bit 3 should always be clear */ - goto release; - *sasr_3393 = WD_AUXILIARY_STATUS; /* setup indirect address */ - if (*sasr_3393 == WD_AUXILIARY_STATUS) { /* shouldn't retain the write */ - *sasr_3393 = save_sasr; /* Oops - restore this byte */ - goto release; - } - if (*sasr_3393 != q) { /* should still read the same */ - *sasr_3393 = save_sasr; /* Oops - restore this byte */ - goto release; - } - if (*scmd_3393 != q) /* and so should the image at 0x1f */ - goto release; - - /* - * Ok, we probably have a wd33c93, but let's check a few other places - * for good measure. Make sure that this works for both 'A and 'B - * chip versions. - */ - - *sasr_3393 = WD_SCSI_STATUS; - q = *scmd_3393; - *sasr_3393 = WD_SCSI_STATUS; - *scmd_3393 = ~q; - *sasr_3393 = WD_SCSI_STATUS; - qq = *scmd_3393; - *sasr_3393 = WD_SCSI_STATUS; - *scmd_3393 = q; - if (qq != q) /* should be read only */ - goto release; - *sasr_3393 = 0x1e; /* this register is unimplemented */ - q = *scmd_3393; - *sasr_3393 = 0x1e; - *scmd_3393 = ~q; - *sasr_3393 = 0x1e; - qq = *scmd_3393; - *sasr_3393 = 0x1e; - *scmd_3393 = q; - if (qq != q || qq != 0xff) /* should be read only, all 1's */ - goto release; - *sasr_3393 = WD_TIMEOUT_PERIOD; - q = *scmd_3393; - *sasr_3393 = WD_TIMEOUT_PERIOD; - *scmd_3393 = ~q; - *sasr_3393 = WD_TIMEOUT_PERIOD; - qq = *scmd_3393; - *sasr_3393 = WD_TIMEOUT_PERIOD; - *scmd_3393 = q; - if (qq != (~q & 0xff)) /* should be read/write */ - goto release; -#endif - - instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata)); - if (instance == NULL) - goto release; - instance->base = ZTWO_VADDR(address); - instance->irq = IRQ_AMIGA_PORTS; - instance->unique_id = z->slotaddr; - - hdata = shost_priv(instance); - if (gvp11_xfer_mask) - hdata->dma_xfer_mask = gvp11_xfer_mask; - else - hdata->dma_xfer_mask = default_dma_xfer_mask; - - DMA(instance)->secret2 = 1; - DMA(instance)->secret1 = 0; - DMA(instance)->secret3 = 15; - while (DMA(instance)->CNTR & GVP11_DMAC_BUSY) - ; - DMA(instance)->CNTR = 0; - - DMA(instance)->BANK = 0; - - epc = *(unsigned short *)(ZTWO_VADDR(address) + 0x8000); - - /* - * Check for 14MHz SCSI clock - */ - regs.SASR = &(DMA(instance)->SASR); - regs.SCMD = &(DMA(instance)->SCMD); - hdata->no_sync = 0xff; - hdata->fast = 0; - hdata->dma_mode = CTRL_DMA; - wd33c93_init(instance, regs, dma_setup, dma_stop, - (epc & GVP_SCSICLKMASK) ? WD33C93_FS_8_10 - : WD33C93_FS_12_15); - - if (request_irq(IRQ_AMIGA_PORTS, gvp11_intr, IRQF_SHARED, - "GVP11 SCSI", instance)) - goto unregister; - DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE; - num_gvp11++; - continue; - -unregister: - scsi_unregister(instance); -release: - release_mem_region(address, 256); + wh->dma_bounce_buffer = NULL; + wh->dma_bounce_len = 0; } - - return num_gvp11; } static int gvp11_bus_reset(struct scsi_cmnd *cmd) { + struct Scsi_Host *instance = cmd->device->host; + /* FIXME perform bus-specific reset */ /* FIXME 2: shouldn't we no-op this function (return FAILED), and fall back to host reset function, wd33c93_host_reset ? */ - spin_lock_irq(cmd->device->host->host_lock); + spin_lock_irq(instance->host_lock); wd33c93_host_reset(cmd); - spin_unlock_irq(cmd->device->host->host_lock); + spin_unlock_irq(instance->host_lock); return SUCCESS; } - -#define HOSTS_C - -#include "gvp11.h" - -static struct scsi_host_template driver_template = { - .proc_name = "GVP11", +static struct scsi_host_template gvp11_scsi_template = { + .module = THIS_MODULE, .name = "GVP Series II SCSI", - .detect = gvp11_detect, - .release = gvp11_release, + .proc_info = wd33c93_proc_info, + .proc_name = "GVP11", .queuecommand = wd33c93_queuecommand, .eh_abort_handler = wd33c93_abort, .eh_bus_reset_handler = gvp11_bus_reset, @@ -385,17 +203,230 @@ static struct scsi_host_template driver_template = { .use_clustering = DISABLE_CLUSTERING }; +static int __devinit check_wd33c93(struct gvp11_scsiregs *regs) +{ +#ifdef CHECK_WD33C93 + volatile unsigned char *sasr_3393, *scmd_3393; + unsigned char save_sasr; + unsigned char q, qq; -#include "scsi_module.c" + /* + * These darn GVP boards are a problem - it can be tough to tell + * whether or not they include a SCSI controller. This is the + * ultimate Yet-Another-GVP-Detection-Hack in that it actually + * probes for a WD33c93 chip: If we find one, it's extremely + * likely that this card supports SCSI, regardless of Product_ + * Code, Board_Size, etc. + */ + + /* Get pointers to the presumed register locations and save contents */ + + sasr_3393 = ®s->SASR; + scmd_3393 = ®s->SCMD; + save_sasr = *sasr_3393; + + /* First test the AuxStatus Reg */ + + q = *sasr_3393; /* read it */ + if (q & 0x08) /* bit 3 should always be clear */ + return -ENODEV; + *sasr_3393 = WD_AUXILIARY_STATUS; /* setup indirect address */ + if (*sasr_3393 == WD_AUXILIARY_STATUS) { /* shouldn't retain the write */ + *sasr_3393 = save_sasr; /* Oops - restore this byte */ + return -ENODEV; + } + if (*sasr_3393 != q) { /* should still read the same */ + *sasr_3393 = save_sasr; /* Oops - restore this byte */ + return -ENODEV; + } + if (*scmd_3393 != q) /* and so should the image at 0x1f */ + return -ENODEV; + + /* + * Ok, we probably have a wd33c93, but let's check a few other places + * for good measure. Make sure that this works for both 'A and 'B + * chip versions. + */ + + *sasr_3393 = WD_SCSI_STATUS; + q = *scmd_3393; + *sasr_3393 = WD_SCSI_STATUS; + *scmd_3393 = ~q; + *sasr_3393 = WD_SCSI_STATUS; + qq = *scmd_3393; + *sasr_3393 = WD_SCSI_STATUS; + *scmd_3393 = q; + if (qq != q) /* should be read only */ + return -ENODEV; + *sasr_3393 = 0x1e; /* this register is unimplemented */ + q = *scmd_3393; + *sasr_3393 = 0x1e; + *scmd_3393 = ~q; + *sasr_3393 = 0x1e; + qq = *scmd_3393; + *sasr_3393 = 0x1e; + *scmd_3393 = q; + if (qq != q || qq != 0xff) /* should be read only, all 1's */ + return -ENODEV; + *sasr_3393 = WD_TIMEOUT_PERIOD; + q = *scmd_3393; + *sasr_3393 = WD_TIMEOUT_PERIOD; + *scmd_3393 = ~q; + *sasr_3393 = WD_TIMEOUT_PERIOD; + qq = *scmd_3393; + *sasr_3393 = WD_TIMEOUT_PERIOD; + *scmd_3393 = q; + if (qq != (~q & 0xff)) /* should be read/write */ + return -ENODEV; +#endif /* CHECK_WD33C93 */ -int gvp11_release(struct Scsi_Host *instance) + return 0; +} + +static int __devinit gvp11_probe(struct zorro_dev *z, + const struct zorro_device_id *ent) { -#ifdef MODULE - DMA(instance)->CNTR = 0; - release_mem_region(ZTWO_PADDR(instance->base), 256); + struct Scsi_Host *instance; + unsigned long address; + int error; + unsigned int epc; + unsigned int default_dma_xfer_mask; + struct gvp11_hostdata *hdata; + struct gvp11_scsiregs *regs; + wd33c93_regs wdregs; + + default_dma_xfer_mask = ent->driver_data; + + /* + * Rumors state that some GVP ram boards use the same product + * code as the SCSI controllers. Therefore if the board-size + * is not 64KB we asume it is a ram board and bail out. + */ + if (zorro_resource_len(z) != 0x10000) + return -ENODEV; + + address = z->resource.start; + if (!request_mem_region(address, 256, "wd33c93")) + return -EBUSY; + + regs = (struct gvp11_scsiregs *)(ZTWO_VADDR(address)); + + error = check_wd33c93(regs); + if (error) + goto fail_check_or_alloc; + + instance = scsi_host_alloc(&gvp11_scsi_template, + sizeof(struct gvp11_hostdata)); + if (!instance) { + error = -ENOMEM; + goto fail_check_or_alloc; + } + + instance->irq = IRQ_AMIGA_PORTS; + instance->unique_id = z->slotaddr; + + regs->secret2 = 1; + regs->secret1 = 0; + regs->secret3 = 15; + while (regs->CNTR & GVP11_DMAC_BUSY) + ; + regs->CNTR = 0; + regs->BANK = 0; + + wdregs.SASR = ®s->SASR; + wdregs.SCMD = ®s->SCMD; + + hdata = shost_priv(instance); + if (gvp11_xfer_mask) + hdata->wh.dma_xfer_mask = gvp11_xfer_mask; + else + hdata->wh.dma_xfer_mask = default_dma_xfer_mask; + + hdata->wh.no_sync = 0xff; + hdata->wh.fast = 0; + hdata->wh.dma_mode = CTRL_DMA; + hdata->regs = regs; + + /* + * Check for 14MHz SCSI clock + */ + epc = *(unsigned short *)(ZTWO_VADDR(address) + 0x8000); + wd33c93_init(instance, wdregs, dma_setup, dma_stop, + (epc & GVP_SCSICLKMASK) ? WD33C93_FS_8_10 + : WD33C93_FS_12_15); + + error = request_irq(IRQ_AMIGA_PORTS, gvp11_intr, IRQF_SHARED, + "GVP11 SCSI", instance); + if (error) + goto fail_irq; + + regs->CNTR = GVP11_DMAC_INT_ENABLE; + + error = scsi_add_host(instance, NULL); + if (error) + goto fail_host; + + zorro_set_drvdata(z, instance); + scsi_scan_host(instance); + return 0; + +fail_host: free_irq(IRQ_AMIGA_PORTS, instance); -#endif - return 1; +fail_irq: + scsi_host_put(instance); +fail_check_or_alloc: + release_mem_region(address, 256); + return error; +} + +static void __devexit gvp11_remove(struct zorro_dev *z) +{ + struct Scsi_Host *instance = zorro_get_drvdata(z); + struct gvp11_hostdata *hdata = shost_priv(instance); + + hdata->regs->CNTR = 0; + scsi_remove_host(instance); + free_irq(IRQ_AMIGA_PORTS, instance); + scsi_host_put(instance); + release_mem_region(z->resource.start, 256); +} + + /* + * This should (hopefully) be the correct way to identify + * all the different GVP SCSI controllers (except for the + * SERIES I though). + */ + +static struct zorro_device_id gvp11_zorro_tbl[] __devinitdata = { + { ZORRO_PROD_GVP_COMBO_030_R3_SCSI, ~0x00ffffff }, + { ZORRO_PROD_GVP_SERIES_II, ~0x00ffffff }, + { ZORRO_PROD_GVP_GFORCE_030_SCSI, ~0x01ffffff }, + { ZORRO_PROD_GVP_A530_SCSI, ~0x01ffffff }, + { ZORRO_PROD_GVP_COMBO_030_R4_SCSI, ~0x01ffffff }, + { ZORRO_PROD_GVP_A1291, ~0x07ffffff }, + { ZORRO_PROD_GVP_GFORCE_040_SCSI_1, ~0x07ffffff }, + { 0 } +}; +MODULE_DEVICE_TABLE(zorro, gvp11_zorro_tbl); + +static struct zorro_driver gvp11_driver = { + .name = "gvp11", + .id_table = gvp11_zorro_tbl, + .probe = gvp11_probe, + .remove = __devexit_p(gvp11_remove), +}; + +static int __init gvp11_init(void) +{ + return zorro_register_driver(&gvp11_driver); +} +module_init(gvp11_init); + +static void __exit gvp11_exit(void) +{ + zorro_unregister_driver(&gvp11_driver); } +module_exit(gvp11_exit); +MODULE_DESCRIPTION("GVP Series II SCSI"); MODULE_LICENSE("GPL"); |