diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/scsi/mvme147.c | 166 | ||||
-rw-r--r-- | drivers/scsi/mvme147.h | 4 |
2 files changed, 87 insertions, 83 deletions
diff --git a/drivers/scsi/mvme147.c b/drivers/scsi/mvme147.c index a423fcc7c11a..b236d72850d1 100644 --- a/drivers/scsi/mvme147.c +++ b/drivers/scsi/mvme147.c @@ -13,111 +13,115 @@ #include "wd33c93.h" #include "mvme147.h" -#include<linux/stat.h> +#include <linux/stat.h> -#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata)) + +#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata)) static struct Scsi_Host *mvme147_host = NULL; -static irqreturn_t mvme147_intr (int irq, void *dummy) +static irqreturn_t mvme147_intr(int irq, void *dummy) { - if (irq == MVME147_IRQ_SCSI_PORT) - wd33c93_intr (mvme147_host); - else - m147_pcc->dma_intr = 0x89; /* Ack and enable ints */ - return IRQ_HANDLED; + if (irq == MVME147_IRQ_SCSI_PORT) + wd33c93_intr(mvme147_host); + else + m147_pcc->dma_intr = 0x89; /* Ack and enable ints */ + return IRQ_HANDLED; } static int dma_setup(struct scsi_cmnd *cmd, int dir_in) { - unsigned char flags = 0x01; - unsigned long addr = virt_to_bus(cmd->SCp.ptr); - - /* setup dma direction */ - if (!dir_in) - flags |= 0x04; - - /* remember direction */ - HDATA(mvme147_host)->dma_dir = dir_in; - - if (dir_in) - /* invalidate any cache */ - cache_clear (addr, cmd->SCp.this_residual); - else - /* push any dirty cache */ - cache_push (addr, cmd->SCp.this_residual); - - /* start DMA */ - m147_pcc->dma_bcr = cmd->SCp.this_residual | (1<<24); - m147_pcc->dma_dadr = addr; - m147_pcc->dma_cntrl = flags; - - /* return success */ - return 0; + unsigned char flags = 0x01; + unsigned long addr = virt_to_bus(cmd->SCp.ptr); + + /* setup dma direction */ + if (!dir_in) + flags |= 0x04; + + /* remember direction */ + HDATA(mvme147_host)->dma_dir = dir_in; + + if (dir_in) { + /* invalidate any cache */ + cache_clear(addr, cmd->SCp.this_residual); + } else { + /* push any dirty cache */ + cache_push(addr, cmd->SCp.this_residual); + } + + /* start DMA */ + m147_pcc->dma_bcr = cmd->SCp.this_residual | (1 << 24); + m147_pcc->dma_dadr = addr; + m147_pcc->dma_cntrl = flags; + + /* return success */ + return 0; } static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, - int status) + int status) { - m147_pcc->dma_cntrl = 0; + m147_pcc->dma_cntrl = 0; } int mvme147_detect(struct scsi_host_template *tpnt) { - static unsigned char called = 0; - wd33c93_regs regs; - - if (!MACH_IS_MVME147 || called) - return 0; - called++; - - tpnt->proc_name = "MVME147"; - tpnt->proc_info = &wd33c93_proc_info; - - mvme147_host = scsi_register (tpnt, sizeof(struct WD33C93_hostdata)); - if (!mvme147_host) - goto err_out; - - mvme147_host->base = 0xfffe4000; - mvme147_host->irq = MVME147_IRQ_SCSI_PORT; - regs.SASR = (volatile unsigned char *)0xfffe4000; - regs.SCMD = (volatile unsigned char *)0xfffe4001; - HDATA(mvme147_host)->no_sync = 0xff; - HDATA(mvme147_host)->fast = 0; - HDATA(mvme147_host)->dma_mode = CTRL_DMA; - wd33c93_init(mvme147_host, regs, dma_setup, dma_stop, WD33C93_FS_8_10); - - if (request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0, "MVME147 SCSI PORT", mvme147_intr)) - goto err_unregister; - if (request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0, "MVME147 SCSI DMA", mvme147_intr)) - goto err_free_irq; + static unsigned char called = 0; + wd33c93_regs regs; + + if (!MACH_IS_MVME147 || called) + return 0; + called++; + + tpnt->proc_name = "MVME147"; + tpnt->proc_info = &wd33c93_proc_info; + + mvme147_host = scsi_register(tpnt, sizeof(struct WD33C93_hostdata)); + if (!mvme147_host) + goto err_out; + + mvme147_host->base = 0xfffe4000; + mvme147_host->irq = MVME147_IRQ_SCSI_PORT; + regs.SASR = (volatile unsigned char *)0xfffe4000; + regs.SCMD = (volatile unsigned char *)0xfffe4001; + HDATA(mvme147_host)->no_sync = 0xff; + HDATA(mvme147_host)->fast = 0; + HDATA(mvme147_host)->dma_mode = CTRL_DMA; + wd33c93_init(mvme147_host, regs, dma_setup, dma_stop, WD33C93_FS_8_10); + + if (request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0, + "MVME147 SCSI PORT", mvme147_intr)) + goto err_unregister; + if (request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0, + "MVME147 SCSI DMA", mvme147_intr)) + goto err_free_irq; #if 0 /* Disabled; causes problems booting */ - m147_pcc->scsi_interrupt = 0x10; /* Assert SCSI bus reset */ - udelay(100); - m147_pcc->scsi_interrupt = 0x00; /* Negate SCSI bus reset */ - udelay(2000); - m147_pcc->scsi_interrupt = 0x40; /* Clear bus reset interrupt */ + m147_pcc->scsi_interrupt = 0x10; /* Assert SCSI bus reset */ + udelay(100); + m147_pcc->scsi_interrupt = 0x00; /* Negate SCSI bus reset */ + udelay(2000); + m147_pcc->scsi_interrupt = 0x40; /* Clear bus reset interrupt */ #endif - m147_pcc->scsi_interrupt = 0x09; /* Enable interrupt */ + m147_pcc->scsi_interrupt = 0x09; /* Enable interrupt */ - m147_pcc->dma_cntrl = 0x00; /* ensure DMA is stopped */ - m147_pcc->dma_intr = 0x89; /* Ack and enable ints */ + m147_pcc->dma_cntrl = 0x00; /* ensure DMA is stopped */ + m147_pcc->dma_intr = 0x89; /* Ack and enable ints */ - return 1; + return 1; - err_free_irq: - free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr); - err_unregister: - scsi_unregister(mvme147_host); - err_out: - return 0; +err_free_irq: + free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr); +err_unregister: + scsi_unregister(mvme147_host); +err_out: + return 0; } static int mvme147_bus_reset(struct scsi_cmnd *cmd) { /* FIXME perform bus-specific reset */ - /* FIXME 2: kill this function, and let midlayer fallback to + /* FIXME 2: kill this function, and let midlayer fallback to the same result, calling wd33c93_host_reset() */ spin_lock_irq(cmd->device->host->host_lock); @@ -153,9 +157,9 @@ static struct scsi_host_template driver_template = { int mvme147_release(struct Scsi_Host *instance) { #ifdef MODULE - /* XXX Make sure DMA is stopped! */ - free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr); - free_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr); + /* XXX Make sure DMA is stopped! */ + free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr); + free_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr); #endif - return 1; + return 1; } diff --git a/drivers/scsi/mvme147.h b/drivers/scsi/mvme147.h index 32aee85434d8..bfd4566ef050 100644 --- a/drivers/scsi/mvme147.h +++ b/drivers/scsi/mvme147.h @@ -14,11 +14,11 @@ int mvme147_detect(struct scsi_host_template *); int mvme147_release(struct Scsi_Host *); #ifndef CMD_PER_LUN -#define CMD_PER_LUN 2 +#define CMD_PER_LUN 2 #endif #ifndef CAN_QUEUE -#define CAN_QUEUE 16 +#define CAN_QUEUE 16 #endif #endif /* MVME147_H */ |