diff options
Diffstat (limited to 'drivers/scsi/sun3_scsi.c')
| -rw-r--r-- | drivers/scsi/sun3_scsi.c | 141 |
1 files changed, 31 insertions, 110 deletions
diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c index 22a42836d..b9de487bb 100644 --- a/drivers/scsi/sun3_scsi.c +++ b/drivers/scsi/sun3_scsi.c @@ -53,13 +53,12 @@ #define NCR5380_queue_command sun3scsi_queue_command #define NCR5380_bus_reset sun3scsi_bus_reset #define NCR5380_abort sun3scsi_abort -#define NCR5380_show_info sun3scsi_show_info #define NCR5380_info sun3scsi_info #define NCR5380_dma_read_setup(instance, data, count) \ - sun3scsi_dma_setup(data, count, 0) + sun3scsi_dma_setup(instance, data, count, 0) #define NCR5380_dma_write_setup(instance, data, count) \ - sun3scsi_dma_setup(data, count, 1) + sun3scsi_dma_setup(instance, data, count, 1) #define NCR5380_dma_residual(instance) \ sun3scsi_dma_residual(instance) #define NCR5380_dma_xfer_len(instance, cmd, phase) \ @@ -86,10 +85,6 @@ module_param(setup_use_tagged_queuing, int, 0); static int setup_hostid = -1; module_param(setup_hostid, int, 0); -/* #define RESET_BOOT */ - -#define AFTER_RESET_DELAY (HZ/2) - /* ms to wait after hitting dma regs */ #define SUN3_DMA_DELAY 10 @@ -100,11 +95,10 @@ static struct scsi_cmnd *sun3_dma_setup_done; static unsigned char *sun3_scsi_regp; static volatile struct sun3_dma_regs *dregs; static struct sun3_udc_regs *udc_regs; -static unsigned char *sun3_dma_orig_addr = NULL; -static unsigned long sun3_dma_orig_count = 0; -static int sun3_dma_active = 0; -static unsigned long last_residual = 0; -static struct Scsi_Host *default_instance; +static unsigned char *sun3_dma_orig_addr; +static unsigned long sun3_dma_orig_count; +static int sun3_dma_active; +static unsigned long last_residual; /* * NCR 5380 register access functions @@ -144,50 +138,12 @@ static inline void sun3_udc_write(unsigned short val, unsigned char reg) } #endif -#ifdef RESET_BOOT -static void sun3_scsi_reset_boot(struct Scsi_Host *instance) -{ - unsigned long end; - - /* - * Do a SCSI reset to clean up the bus during initialization. No - * messing with the queues, interrupts, or locks necessary here. - */ - - printk( "Sun3 SCSI: resetting the SCSI bus..." ); - - /* switch off SCSI IRQ - catch an interrupt without IRQ bit set else */ -// sun3_disable_irq( IRQ_SUN3_SCSI ); - - /* get in phase */ - NCR5380_write( TARGET_COMMAND_REG, - PHASE_SR_TO_TCR( NCR5380_read(STATUS_REG) )); - - /* assert RST */ - NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_RST ); - - /* The min. reset hold time is 25us, so 40us should be enough */ - udelay( 50 ); - - /* reset RST and interrupt */ - NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE ); - NCR5380_read( RESET_PARITY_INTERRUPT_REG ); - - for( end = jiffies + AFTER_RESET_DELAY; time_before(jiffies, end); ) - barrier(); - - /* switch on SCSI IRQ again */ -// sun3_enable_irq( IRQ_SUN3_SCSI ); - - printk( " done\n" ); -} -#endif - // safe bits for the CSR #define CSR_GOOD 0x060f -static irqreturn_t scsi_sun3_intr(int irq, void *dummy) +static irqreturn_t scsi_sun3_intr(int irq, void *dev) { + struct Scsi_Host *instance = dev; unsigned short csr = dregs->csr; int handled = 0; @@ -196,46 +152,24 @@ static irqreturn_t scsi_sun3_intr(int irq, void *dummy) #endif if(csr & ~CSR_GOOD) { - if(csr & CSR_DMA_BUSERR) { - printk("scsi%d: bus error in dma\n", default_instance->host_no); - } - - if(csr & CSR_DMA_CONFLICT) { - printk("scsi%d: dma conflict\n", default_instance->host_no); - } + if (csr & CSR_DMA_BUSERR) + shost_printk(KERN_ERR, instance, "bus error in DMA\n"); + if (csr & CSR_DMA_CONFLICT) + shost_printk(KERN_ERR, instance, "DMA conflict\n"); handled = 1; } if(csr & (CSR_SDB_INT | CSR_DMA_INT)) { - NCR5380_intr(irq, dummy); + NCR5380_intr(irq, dev); handled = 1; } return IRQ_RETVAL(handled); } -/* - * Debug stuff - to be called on NMI, or sysrq key. Use at your own risk; - * reentering NCR5380_print_status seems to have ugly side effects - */ - -/* this doesn't seem to get used at all -- sam */ -#if 0 -void sun3_sun3_debug (void) -{ - unsigned long flags; - - if (default_instance) { - local_irq_save(flags); - NCR5380_print_status(default_instance); - local_irq_restore(flags); - } -} -#endif - - /* sun3scsi_dma_setup() -- initialize the dma controller for a read/write */ -static unsigned long sun3scsi_dma_setup(void *data, unsigned long count, int write_flag) +static unsigned long sun3scsi_dma_setup(struct Scsi_Host *instance, + void *data, unsigned long count, int write_flag) { void *addr; @@ -287,10 +221,9 @@ static unsigned long sun3scsi_dma_setup(void *data, unsigned long count, int wri dregs->csr |= CSR_FIFO; if(dregs->fifo_count != count) { - printk("scsi%d: fifo_mismatch %04x not %04x\n", - default_instance->host_no, dregs->fifo_count, - (unsigned int) count); - NCR5380_dprint(NDEBUG_DMA, default_instance); + shost_printk(KERN_ERR, instance, "FIFO mismatch %04x not %04x\n", + dregs->fifo_count, (unsigned int) count); + NCR5380_dprint(NDEBUG_DMA, instance); } /* setup udc */ @@ -325,21 +258,6 @@ static unsigned long sun3scsi_dma_setup(void *data, unsigned long count, int wri } -#ifndef SUN3_SCSI_VME -static inline unsigned long sun3scsi_dma_count(struct Scsi_Host *instance) -{ - unsigned short resid; - - dregs->udc_addr = 0x32; - udelay(SUN3_DMA_DELAY); - resid = dregs->udc_data; - udelay(SUN3_DMA_DELAY); - resid *= 2; - - return (unsigned long) resid; -} -#endif - static inline unsigned long sun3scsi_dma_residual(struct Scsi_Host *instance) { return last_residual; @@ -437,7 +355,10 @@ static int sun3scsi_dma_finish(int write_flag) } } - count = sun3scsi_dma_count(default_instance); + dregs->udc_addr = 0x32; + udelay(SUN3_DMA_DELAY); + count = 2 * dregs->udc_data; + udelay(SUN3_DMA_DELAY); fifo = dregs->fifo_count; last_residual = fifo; @@ -502,17 +423,17 @@ static int sun3scsi_dma_finish(int write_flag) static struct scsi_host_template sun3_scsi_template = { .module = THIS_MODULE, .proc_name = DRV_MODULE_NAME, - .show_info = sun3scsi_show_info, .name = SUN3_SCSI_NAME, .info = sun3scsi_info, .queuecommand = sun3scsi_queue_command, - .eh_abort_handler = sun3scsi_abort, - .eh_bus_reset_handler = sun3scsi_bus_reset, + .eh_abort_handler = sun3scsi_abort, + .eh_bus_reset_handler = sun3scsi_bus_reset, .can_queue = 16, .this_id = 7, .sg_tablesize = SG_NONE, .cmd_per_lun = 2, - .use_clustering = DISABLE_CLUSTERING + .use_clustering = DISABLE_CLUSTERING, + .cmd_size = NCR5380_CMD_SIZE, }; static int __init sun3_scsi_probe(struct platform_device *pdev) @@ -591,7 +512,6 @@ static int __init sun3_scsi_probe(struct platform_device *pdev) error = -ENOMEM; goto fail_alloc; } - default_instance = instance; instance->io_port = (unsigned long)ioaddr; instance->irq = irq->start; @@ -600,7 +520,9 @@ static int __init sun3_scsi_probe(struct platform_device *pdev) host_flags |= setup_use_tagged_queuing > 0 ? FLAG_TAGGED_QUEUING : 0; #endif - NCR5380_init(instance, host_flags); + error = NCR5380_init(instance, host_flags); + if (error) + goto fail_init; error = request_irq(instance->irq, scsi_sun3_intr, 0, "NCR5380", instance); @@ -631,9 +553,7 @@ static int __init sun3_scsi_probe(struct platform_device *pdev) dregs->ivect = VME_DATA24 | (instance->irq & 0xff); #endif -#ifdef RESET_BOOT - sun3_scsi_reset_boot(instance); -#endif + NCR5380_maybe_reset_bus(instance); error = scsi_add_host(instance, NULL); if (error) @@ -649,6 +569,7 @@ fail_host: free_irq(instance->irq, instance); fail_irq: NCR5380_exit(instance); +fail_init: scsi_host_put(instance); fail_alloc: if (udc_regs) |