diff options
| -rw-r--r-- | drivers/scsi/Kconfig | 17 | ||||
| -rw-r--r-- | drivers/scsi/NCR5380.c | 17 | ||||
| -rw-r--r-- | drivers/scsi/NCR5380.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/atari_NCR5380.c | 22 | ||||
| -rw-r--r-- | drivers/scsi/atari_scsi.c | 60 | ||||
| -rw-r--r-- | drivers/scsi/mac_scsi.c | 65 | ||||
| -rw-r--r-- | drivers/scsi/sun3_scsi.c | 47 |
7 files changed, 51 insertions, 178 deletions
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 37dce2380a52..abdd4360e219 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -1617,23 +1617,6 @@ config ATARI_SCSI ST-DMA, replacing ACSI). It does NOT support other schemes, like in the Hades (without DMA). -config ATARI_SCSI_TOSHIBA_DELAY - bool "Long delays for Toshiba CD-ROMs" - depends on ATARI_SCSI - help - This option increases the delay after a SCSI arbitration to - accommodate some flaky Toshiba CD-ROM drives. Say Y if you intend to - use a Toshiba CD-ROM drive; otherwise, the option is not needed and - would impact performance a bit, so say N. - -config ATARI_SCSI_RESET_BOOT - bool "Reset SCSI-devices at boottime" - depends on ATARI_SCSI - help - Reset the devices on your Atari whenever it boots. This makes the - boot process fractionally longer but may assist recovery from errors - that leave the devices with SCSI operations partway completed. - config MAC_SCSI tristate "Macintosh NCR5380 SCSI" depends on MAC && SCSI=y diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index 391ee8db5de1..7ccf2e37b6ad 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -618,7 +618,7 @@ static void prepare_info(struct Scsi_Host *instance) "base 0x%lx, irq %d, " "can_queue %d, cmd_per_lun %d, " "sg_tablesize %d, this_id %d, " - "flags { %s%s%s}, " + "flags { %s%s%s%s}, " #if defined(USLEEP_POLL) && defined(USLEEP_WAITLONG) "USLEEP_POLL %lu, USLEEP_WAITLONG %lu, " #endif @@ -630,6 +630,7 @@ static void prepare_info(struct Scsi_Host *instance) hostdata->flags & FLAG_NCR53C400 ? "NCR53C400 " : "", hostdata->flags & FLAG_DTC3181E ? "DTC3181E " : "", hostdata->flags & FLAG_NO_PSEUDO_DMA ? "NO_PSEUDO_DMA " : "", + hostdata->flags & FLAG_TOSHIBA_DELAY ? "TOSHIBA_DELAY " : "", #if defined(USLEEP_POLL) && defined(USLEEP_WAITLONG) USLEEP_POLL, USLEEP_WAITLONG, #endif @@ -831,6 +832,7 @@ static int NCR5380_init(struct Scsi_Host *instance, int flags) static int NCR5380_maybe_reset_bus(struct Scsi_Host *instance) { + struct NCR5380_hostdata *hostdata = shost_priv(instance); int pass; for (pass = 1; (NCR5380_read(STATUS_REG) & SR_BSY) && pass <= 6; ++pass) { @@ -849,6 +851,14 @@ static int NCR5380_maybe_reset_bus(struct Scsi_Host *instance) case 4: shost_printk(KERN_ERR, instance, "bus busy, attempting reset\n"); do_reset(instance); + /* Wait after a reset; the SCSI standard calls for + * 250ms, we wait 500ms to be on the safe side. + * But some Toshiba CD-ROMs need ten times that. + */ + if (hostdata->flags & FLAG_TOSHIBA_DELAY) + msleep(2500); + else + msleep(500); break; case 6: shost_printk(KERN_ERR, instance, "bus locked solid\n"); @@ -1253,7 +1263,10 @@ static int NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd) * a minimum so we'll udelay ceil(1.2) */ - udelay(2); + if (hostdata->flags & FLAG_TOSHIBA_DELAY) + udelay(15); + else + udelay(2); dprintk(NDEBUG_ARBITRATION, "scsi%d : won arbitration\n", instance->host_no); diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h index 2057eaa66c20..f2f737a5f75a 100644 --- a/drivers/scsi/NCR5380.h +++ b/drivers/scsi/NCR5380.h @@ -243,6 +243,7 @@ #define FLAG_DTC3181E 16 /* DTC3181E */ #define FLAG_LATE_DMA_SETUP 32 /* Setup NCR before DMA H/W */ #define FLAG_TAGGED_QUEUING 64 /* as X3T9.2 spelled it */ +#define FLAG_TOSHIBA_DELAY 128 /* Allow for borken CD-ROMs */ #ifdef SUPPORT_TAGS struct tag_alloc { diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c index a15b655aa2b0..de53cda4b153 100644 --- a/drivers/scsi/atari_NCR5380.c +++ b/drivers/scsi/atari_NCR5380.c @@ -674,13 +674,14 @@ static void prepare_info(struct Scsi_Host *instance) "base 0x%lx, irq %d, " "can_queue %d, cmd_per_lun %d, " "sg_tablesize %d, this_id %d, " - "flags { %s}, " + "flags { %s%s}, " "options { %s} ", instance->hostt->name, instance->io_port, instance->n_io_port, instance->base, instance->irq, instance->can_queue, instance->cmd_per_lun, instance->sg_tablesize, instance->this_id, hostdata->flags & FLAG_TAGGED_QUEUING ? "TAGGED_QUEUING " : "", + hostdata->flags & FLAG_TOSHIBA_DELAY ? "TOSHIBA_DELAY " : "", #ifdef DIFFERENTIAL "DIFFERENTIAL " #endif @@ -860,6 +861,7 @@ static int __init NCR5380_init(struct Scsi_Host *instance, int flags) static int NCR5380_maybe_reset_bus(struct Scsi_Host *instance) { + struct NCR5380_hostdata *hostdata = shost_priv(instance); int pass; for (pass = 1; (NCR5380_read(STATUS_REG) & SR_BSY) && pass <= 6; ++pass) { @@ -878,6 +880,14 @@ static int NCR5380_maybe_reset_bus(struct Scsi_Host *instance) case 4: shost_printk(KERN_ERR, instance, "bus busy, attempting reset\n"); do_reset(instance); + /* Wait after a reset; the SCSI standard calls for + * 250ms, we wait 500ms to be on the safe side. + * But some Toshiba CD-ROMs need ten times that. + */ + if (hostdata->flags & FLAG_TOSHIBA_DELAY) + msleep(2500); + else + msleep(500); break; case 6: shost_printk(KERN_ERR, instance, "bus locked solid\n"); @@ -1493,12 +1503,10 @@ static int NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd) * a minimum so we'll udelay ceil(1.2) */ -#ifdef CONFIG_ATARI_SCSI_TOSHIBA_DELAY - /* ++roman: But some targets (see above :-) seem to need a bit more... */ - udelay(15); -#else - udelay(2); -#endif + if (hostdata->flags & FLAG_TOSHIBA_DELAY) + udelay(15); + else + udelay(2); if (hostdata->connected) { NCR5380_write(MODE_REG, MR_BASE); diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c index 1852ed6e8a48..5b233ccae962 100644 --- a/drivers/scsi/atari_scsi.c +++ b/drivers/scsi/atari_scsi.c @@ -164,15 +164,6 @@ static inline unsigned long SCSI_DMA_GETADR(void) #define HOSTDATA_DMALEN (((struct NCR5380_hostdata *) \ (atari_scsi_host->hostdata))->dma_len) -/* Time (in jiffies) to wait after a reset; the SCSI standard calls for 250ms, - * we usually do 0.5s to be on the safe side. But Toshiba CD-ROMs once more - * need ten times the standard value... */ -#ifndef CONFIG_ATARI_SCSI_TOSHIBA_DELAY -#define AFTER_RESET_DELAY (HZ/2) -#else -#define AFTER_RESET_DELAY (5*HZ/2) -#endif - #ifdef REAL_DMA static void atari_scsi_fetch_restbytes(void); #endif @@ -208,12 +199,12 @@ static int setup_cmd_per_lun = -1; module_param(setup_cmd_per_lun, int, 0); static int setup_sg_tablesize = -1; module_param(setup_sg_tablesize, int, 0); -#ifdef SUPPORT_TAGS static int setup_use_tagged_queuing = -1; module_param(setup_use_tagged_queuing, int, 0); -#endif static int setup_hostid = -1; module_param(setup_hostid, int, 0); +static int setup_toshiba_delay = -1; +module_param(setup_toshiba_delay, int, 0); #if defined(REAL_DMA) @@ -488,7 +479,7 @@ static int __init atari_scsi_setup(char *str) * Defaults depend on TT or Falcon, determined at run time. * Negative values mean don't change. */ - int ints[6]; + int ints[8]; get_options(str, ARRAY_SIZE(ints), ints); @@ -504,10 +495,11 @@ static int __init atari_scsi_setup(char *str) setup_sg_tablesize = ints[3]; if (ints[0] >= 4) setup_hostid = ints[4]; -#ifdef SUPPORT_TAGS if (ints[0] >= 5) setup_use_tagged_queuing = ints[5]; -#endif + /* ints[6] (use_pdma) is ignored */ + if (ints[0] >= 7) + setup_toshiba_delay = ints[7]; return 1; } @@ -516,38 +508,6 @@ __setup("atascsi=", atari_scsi_setup); #endif /* !MODULE */ -#ifdef CONFIG_ATARI_SCSI_RESET_BOOT -static void __init atari_scsi_reset_boot(void) -{ - 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("Atari SCSI: resetting the SCSI bus..."); - - /* 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); - - end = jiffies + AFTER_RESET_DELAY; - while (time_before(jiffies, end)) - barrier(); - - printk(" done\n"); -} -#endif - #if defined(REAL_DMA) static unsigned long atari_scsi_dma_setup(struct Scsi_Host *instance, @@ -917,17 +877,13 @@ static int __init atari_scsi_probe(struct platform_device *pdev) } atari_scsi_host = instance; -#ifdef CONFIG_ATARI_SCSI_RESET_BOOT - atari_scsi_reset_boot(); -#endif - instance->irq = irq->start; host_flags |= IS_A_TT() ? 0 : FLAG_LATE_DMA_SETUP; - #ifdef SUPPORT_TAGS host_flags |= setup_use_tagged_queuing > 0 ? FLAG_TAGGED_QUEUING : 0; #endif + host_flags |= setup_toshiba_delay > 0 ? FLAG_TOSHIBA_DELAY : 0; NCR5380_init(instance, host_flags); @@ -975,6 +931,8 @@ static int __init atari_scsi_probe(struct platform_device *pdev) #endif } + NCR5380_maybe_reset_bus(instance); + error = scsi_add_host(instance, NULL); if (error) goto fail_host; diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c index e49a9b1d7c3d..4d26ef93e656 100644 --- a/drivers/scsi/mac_scsi.c +++ b/drivers/scsi/mac_scsi.c @@ -49,8 +49,6 @@ #include "NCR5380.h" -#define RESET_BOOT - static int setup_can_queue = -1; module_param(setup_can_queue, int, 0); static int setup_cmd_per_lun = -1; @@ -63,17 +61,8 @@ static int setup_use_tagged_queuing = -1; module_param(setup_use_tagged_queuing, int, 0); static int setup_hostid = -1; module_param(setup_hostid, int, 0); - -/* Time (in jiffies) to wait after a reset; the SCSI standard calls for 250ms, - * we usually do 0.5s to be on the safe side. But Toshiba CD-ROMs once more - * need ten times the standard value... */ -#define TOSHIBA_DELAY - -#ifdef TOSHIBA_DELAY -#define AFTER_RESET_DELAY (5*HZ/2) -#else -#define AFTER_RESET_DELAY (HZ/2) -#endif +static int setup_toshiba_delay = -1; +module_param(setup_toshiba_delay, int, 0); /* * NCR 5380 register access functions @@ -92,12 +81,12 @@ static inline void macscsi_write(struct Scsi_Host *instance, int reg, int value) #ifndef MODULE static int __init mac_scsi_setup(char *str) { - int ints[7]; + int ints[8]; (void)get_options(str, ARRAY_SIZE(ints), ints); - if (ints[0] < 1 || ints[0] > 6) { - pr_err("Usage: mac5380=<can_queue>[,<cmd_per_lun>[,<sg_tablesize>[,<hostid>[,<use_tags>[,<use_pdma>]]]]]\n"); + if (ints[0] < 1) { + pr_err("Usage: mac5380=<can_queue>[,<cmd_per_lun>[,<sg_tablesize>[,<hostid>[,<use_tags>[,<use_pdma>[,<toshiba_delay>]]]]]]\n"); return 0; } if (ints[0] >= 1) @@ -112,47 +101,14 @@ static int __init mac_scsi_setup(char *str) setup_use_tagged_queuing = ints[5]; if (ints[0] >= 6) setup_use_pdma = ints[6]; + if (ints[0] >= 7) + setup_toshiba_delay = ints[7]; return 1; } __setup("mac5380=", mac_scsi_setup); #endif /* !MODULE */ -#ifdef RESET_BOOT -/* - * Our 'bus reset on boot' function - */ - -static void mac_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(KERN_INFO "Macintosh SCSI: resetting the SCSI bus..." ); - - /* 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(); - - printk(KERN_INFO " done\n" ); -} -#endif - #ifdef PSEUDO_DMA /* Pseudo-DMA: (Ove Edlund) @@ -421,13 +377,10 @@ static int __init mac_scsi_probe(struct platform_device *pdev) } else host_flags |= FLAG_NO_PSEUDO_DMA; -#ifdef RESET_BOOT - mac_scsi_reset_boot(instance); -#endif - #ifdef SUPPORT_TAGS host_flags |= setup_use_tagged_queuing > 0 ? FLAG_TAGGED_QUEUING : 0; #endif + host_flags |= setup_toshiba_delay > 0 ? FLAG_TOSHIBA_DELAY : 0; NCR5380_init(instance, host_flags); @@ -438,6 +391,8 @@ static int __init mac_scsi_probe(struct platform_device *pdev) goto fail_irq; } + NCR5380_maybe_reset_bus(instance); + error = scsi_add_host(instance, NULL); if (error) goto fail_host; diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c index 836f5ca6d209..9376b3d8bfdc 100644 --- a/drivers/scsi/sun3_scsi.c +++ b/drivers/scsi/sun3_scsi.c @@ -86,10 +86,6 @@ 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 @@ -144,45 +140,6 @@ 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 @@ -631,9 +588,7 @@ 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) |