X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fide%2Fide-lib.c;h=e386a32dc9ba888c110b42971d57a1bab2662f49;hb=9f93ff5be54108066372d1c4100c515d9d9acc1b;hp=1ff676cc6473f56dd9a5cc00b7f31d57c4899e4d;hpb=64a57fe4393bae920d03c253173f59d8a7ec8e25;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c index 1ff676c..e386a32 100644 --- a/drivers/ide/ide-lib.c +++ b/drivers/ide/ide-lib.c @@ -1,347 +1,10 @@ -#include #include #include #include -#include -#include #include -#include -#include -#include -#include -#include -#include -#include -#include #include #include -#include -#include -#include -#include - -/* - * IDE library routines. These are plug in code that most - * drivers can use but occasionally may be weird enough - * to want to do their own thing with - * - * Add common non I/O op stuff here. Make sure it has proper - * kernel-doc function headers or your patch will be rejected - */ - -static const char *udma_str[] = - { "UDMA/16", "UDMA/25", "UDMA/33", "UDMA/44", - "UDMA/66", "UDMA/100", "UDMA/133", "UDMA7" }; -static const char *mwdma_str[] = - { "MWDMA0", "MWDMA1", "MWDMA2" }; -static const char *swdma_str[] = - { "SWDMA0", "SWDMA1", "SWDMA2" }; -static const char *pio_str[] = - { "PIO0", "PIO1", "PIO2", "PIO3", "PIO4", "PIO5" }; - -/** - * ide_xfer_verbose - return IDE mode names - * @mode: transfer mode - * - * Returns a constant string giving the name of the mode - * requested. - */ - -const char *ide_xfer_verbose(u8 mode) -{ - const char *s; - u8 i = mode & 0xf; - - if (mode >= XFER_UDMA_0 && mode <= XFER_UDMA_7) - s = udma_str[i]; - else if (mode >= XFER_MW_DMA_0 && mode <= XFER_MW_DMA_2) - s = mwdma_str[i]; - else if (mode >= XFER_SW_DMA_0 && mode <= XFER_SW_DMA_2) - s = swdma_str[i]; - else if (mode >= XFER_PIO_0 && mode <= XFER_PIO_5) - s = pio_str[i & 0x7]; - else if (mode == XFER_PIO_SLOW) - s = "PIO SLOW"; - else - s = "XFER ERROR"; - - return s; -} - -EXPORT_SYMBOL(ide_xfer_verbose); - -/** - * ide_rate_filter - filter transfer mode - * @drive: IDE device - * @speed: desired speed - * - * Given the available transfer modes this function returns - * the best available speed at or below the speed requested. - * - * TODO: check device PIO capabilities - */ - -static u8 ide_rate_filter(ide_drive_t *drive, u8 speed) -{ - ide_hwif_t *hwif = drive->hwif; - u8 mode = ide_find_dma_mode(drive, speed); - - if (mode == 0) { - if (hwif->pio_mask) - mode = fls(hwif->pio_mask) - 1 + XFER_PIO_0; - else - mode = XFER_PIO_4; - } - -// printk("%s: mode 0x%02x, speed 0x%02x\n", __FUNCTION__, mode, speed); - - return min(speed, mode); -} - -/* - * Standard (generic) timings for PIO modes, from ATA2 specification. - * These timings are for access to the IDE data port register *only*. - * Some drives may specify a mode, while also specifying a different - * value for cycle_time (from drive identification data). - */ -const ide_pio_timings_t ide_pio_timings[6] = { - { 70, 165, 600 }, /* PIO Mode 0 */ - { 50, 125, 383 }, /* PIO Mode 1 */ - { 30, 100, 240 }, /* PIO Mode 2 */ - { 30, 80, 180 }, /* PIO Mode 3 with IORDY */ - { 25, 70, 120 }, /* PIO Mode 4 with IORDY */ - { 20, 50, 100 } /* PIO Mode 5 with IORDY (nonstandard) */ -}; - -EXPORT_SYMBOL_GPL(ide_pio_timings); - -/* - * Shared data/functions for determining best PIO mode for an IDE drive. - * Most of this stuff originally lived in cmd640.c, and changes to the - * ide_pio_blacklist[] table should be made with EXTREME CAUTION to avoid - * breaking the fragile cmd640.c support. - */ - -/* - * Black list. Some drives incorrectly report their maximal PIO mode, - * at least in respect to CMD640. Here we keep info on some known drives. - */ -static struct ide_pio_info { - const char *name; - int pio; -} ide_pio_blacklist [] = { -/* { "Conner Peripherals 1275MB - CFS1275A", 4 }, */ - { "Conner Peripherals 540MB - CFS540A", 3 }, - - { "WDC AC2700", 3 }, - { "WDC AC2540", 3 }, - { "WDC AC2420", 3 }, - { "WDC AC2340", 3 }, - { "WDC AC2250", 0 }, - { "WDC AC2200", 0 }, - { "WDC AC21200", 4 }, - { "WDC AC2120", 0 }, - { "WDC AC2850", 3 }, - { "WDC AC1270", 3 }, - { "WDC AC1170", 1 }, - { "WDC AC1210", 1 }, - { "WDC AC280", 0 }, -/* { "WDC AC21000", 4 }, */ - { "WDC AC31000", 3 }, - { "WDC AC31200", 3 }, -/* { "WDC AC31600", 4 }, */ - - { "Maxtor 7131 AT", 1 }, - { "Maxtor 7171 AT", 1 }, - { "Maxtor 7213 AT", 1 }, - { "Maxtor 7245 AT", 1 }, - { "Maxtor 7345 AT", 1 }, - { "Maxtor 7546 AT", 3 }, - { "Maxtor 7540 AV", 3 }, - - { "SAMSUNG SHD-3121A", 1 }, - { "SAMSUNG SHD-3122A", 1 }, - { "SAMSUNG SHD-3172A", 1 }, - -/* { "ST51080A", 4 }, - * { "ST51270A", 4 }, - * { "ST31220A", 4 }, - * { "ST31640A", 4 }, - * { "ST32140A", 4 }, - * { "ST3780A", 4 }, - */ - { "ST5660A", 3 }, - { "ST3660A", 3 }, - { "ST3630A", 3 }, - { "ST3655A", 3 }, - { "ST3391A", 3 }, - { "ST3390A", 1 }, - { "ST3600A", 1 }, - { "ST3290A", 0 }, - { "ST3144A", 0 }, - { "ST3491A", 1 }, /* reports 3, should be 1 or 2 (depending on */ - /* drive) according to Seagates FIND-ATA program */ - - { "QUANTUM ELS127A", 0 }, - { "QUANTUM ELS170A", 0 }, - { "QUANTUM LPS240A", 0 }, - { "QUANTUM LPS210A", 3 }, - { "QUANTUM LPS270A", 3 }, - { "QUANTUM LPS365A", 3 }, - { "QUANTUM LPS540A", 3 }, - { "QUANTUM LIGHTNING 540A", 3 }, - { "QUANTUM LIGHTNING 730A", 3 }, - - { "QUANTUM FIREBALL_540", 3 }, /* Older Quantum Fireballs don't work */ - { "QUANTUM FIREBALL_640", 3 }, - { "QUANTUM FIREBALL_1080", 3 }, - { "QUANTUM FIREBALL_1280", 3 }, - { NULL, 0 } -}; - -/** - * ide_scan_pio_blacklist - check for a blacklisted drive - * @model: Drive model string - * - * This routine searches the ide_pio_blacklist for an entry - * matching the start/whole of the supplied model name. - * - * Returns -1 if no match found. - * Otherwise returns the recommended PIO mode from ide_pio_blacklist[]. - */ - -static int ide_scan_pio_blacklist (char *model) -{ - struct ide_pio_info *p; - - for (p = ide_pio_blacklist; p->name != NULL; p++) { - if (strncmp(p->name, model, strlen(p->name)) == 0) - return p->pio; - } - return -1; -} - -unsigned int ide_pio_cycle_time(ide_drive_t *drive, u8 pio) -{ - struct hd_driveid *id = drive->id; - int cycle_time = 0; - - if (id->field_valid & 2) { - if (id->capability & 8) - cycle_time = id->eide_pio_iordy; - else - cycle_time = id->eide_pio; - } - - /* conservative "downgrade" for all pre-ATA2 drives */ - if (pio < 3) { - if (cycle_time && cycle_time < ide_pio_timings[pio].cycle_time) - cycle_time = 0; /* use standard timing */ - } - - return cycle_time ? cycle_time : ide_pio_timings[pio].cycle_time; -} - -EXPORT_SYMBOL_GPL(ide_pio_cycle_time); - -/** - * ide_get_best_pio_mode - get PIO mode from drive - * @drive: drive to consider - * @mode_wanted: preferred mode - * @max_mode: highest allowed mode - * - * This routine returns the recommended PIO settings for a given drive, - * based on the drive->id information and the ide_pio_blacklist[]. - * - * Drive PIO mode is auto-selected if 255 is passed as mode_wanted. - * This is used by most chipset support modules when "auto-tuning". - */ - -u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode) -{ - int pio_mode; - struct hd_driveid* id = drive->id; - int overridden = 0; - - if (mode_wanted != 255) - return min_t(u8, mode_wanted, max_mode); - - if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_BLACKLIST) == 0 && - (pio_mode = ide_scan_pio_blacklist(id->model)) != -1) { - printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name); - } else { - pio_mode = id->tPIO; - if (pio_mode > 2) { /* 2 is maximum allowed tPIO value */ - pio_mode = 2; - overridden = 1; - } - if (id->field_valid & 2) { /* drive implements ATA2? */ - if (id->capability & 8) { /* IORDY supported? */ - if (id->eide_pio_modes & 7) { - overridden = 0; - if (id->eide_pio_modes & 4) - pio_mode = 5; - else if (id->eide_pio_modes & 2) - pio_mode = 4; - else - pio_mode = 3; - } - } - } - - if (overridden) - printk(KERN_INFO "%s: tPIO > 2, assuming tPIO = 2\n", - drive->name); - - /* - * Conservative "downgrade" for all pre-ATA2 drives - */ - if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_DOWNGRADE) == 0 && - pio_mode && pio_mode < 4) { - pio_mode--; - printk(KERN_INFO "%s: applying conservative " - "PIO \"downgrade\"\n", drive->name); - } - } - - if (pio_mode > max_mode) - pio_mode = max_mode; - - return pio_mode; -} - -EXPORT_SYMBOL_GPL(ide_get_best_pio_mode); - -/* req_pio == "255" for auto-tune */ -void ide_set_pio(ide_drive_t *drive, u8 req_pio) -{ - ide_hwif_t *hwif = drive->hwif; - u8 host_pio, pio; - - if (hwif->set_pio_mode == NULL) - return; - - BUG_ON(hwif->pio_mask == 0x00); - - host_pio = fls(hwif->pio_mask) - 1; - - pio = ide_get_best_pio_mode(drive, req_pio, host_pio); - - /* - * TODO: - * - report device max PIO mode - * - check req_pio != 255 against device max PIO mode - */ - printk(KERN_DEBUG "%s: host max PIO%d wanted PIO%d%s selected PIO%d\n", - drive->name, host_pio, req_pio, - req_pio == 255 ? "(auto-tune)" : "", pio); - - (void)ide_set_pio_mode(drive, XFER_PIO_0 + pio); -} - -EXPORT_SYMBOL_GPL(ide_set_pio); - /** * ide_toggle_bounce - handle bounce buffering * @drive: drive to update @@ -350,7 +13,7 @@ EXPORT_SYMBOL_GPL(ide_set_pio); * Enable or disable bounce buffering for the device. Drives move * between PIO and DMA and that changes the rules we need. */ - + void ide_toggle_bounce(ide_drive_t *drive, int on) { u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */ @@ -368,124 +31,17 @@ void ide_toggle_bounce(ide_drive_t *drive, int on) blk_queue_bounce_limit(drive->queue, addr); } -int ide_set_pio_mode(ide_drive_t *drive, const u8 mode) -{ - ide_hwif_t *hwif = drive->hwif; - - if (hwif->set_pio_mode == NULL) - return -1; - - /* - * TODO: temporary hack for some legacy host drivers that didn't - * set transfer mode on the device in ->set_pio_mode method... - */ - if (hwif->set_dma_mode == NULL) { - hwif->set_pio_mode(drive, mode - XFER_PIO_0); - return 0; - } - - if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { - if (ide_config_drive_speed(drive, mode)) - return -1; - hwif->set_pio_mode(drive, mode - XFER_PIO_0); - return 0; - } else { - hwif->set_pio_mode(drive, mode - XFER_PIO_0); - return ide_config_drive_speed(drive, mode); - } -} - -int ide_set_dma_mode(ide_drive_t *drive, const u8 mode) -{ - ide_hwif_t *hwif = drive->hwif; - - if (hwif->set_dma_mode == NULL) - return -1; - - if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { - if (ide_config_drive_speed(drive, mode)) - return -1; - hwif->set_dma_mode(drive, mode); - return 0; - } else { - hwif->set_dma_mode(drive, mode); - return ide_config_drive_speed(drive, mode); - } -} - -EXPORT_SYMBOL_GPL(ide_set_dma_mode); - -/** - * ide_set_xfer_rate - set transfer rate - * @drive: drive to set - * @rate: speed to attempt to set - * - * General helper for setting the speed of an IDE device. This - * function knows about user enforced limits from the configuration - * which ->set_pio_mode/->set_dma_mode does not. - */ - -int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) -{ - ide_hwif_t *hwif = drive->hwif; - - if (hwif->set_dma_mode == NULL) - return -1; - - rate = ide_rate_filter(drive, rate); - - if (rate >= XFER_PIO_0 && rate <= XFER_PIO_5) - return ide_set_pio_mode(drive, rate); - - /* - * TODO: transfer modes 0x00-0x07 passed from the user-space are - * currently handled here which needs fixing (please note that such - * case could happen iff the transfer mode has already been set on - * the device by ide-proc.c::set_xfer_rate()). - */ - if (rate < XFER_PIO_0) { - if (hwif->host_flags & IDE_HFLAG_ABUSE_SET_DMA_MODE) - return ide_set_dma_mode(drive, rate); - else - return ide_config_drive_speed(drive, rate); - } - - return ide_set_dma_mode(drive, rate); -} - -static void ide_dump_opcode(ide_drive_t *drive) -{ - struct request *rq; - ide_task_t *task = NULL; - - spin_lock(&ide_lock); - rq = NULL; - if (HWGROUP(drive)) - rq = HWGROUP(drive)->rq; - spin_unlock(&ide_lock); - if (!rq) - return; - - if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) - task = rq->special; - - printk("ide: failed opcode was: "); - if (task == NULL) - printk(KERN_CONT "unknown\n"); - else - printk(KERN_CONT "0x%02x\n", task->tf.command); -} - -u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48) +u64 ide_get_lba_addr(struct ide_cmd *cmd, int lba48) { + struct ide_taskfile *tf = &cmd->tf; u32 high, low; - if (lba48) - high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) | - tf->hob_lbal; - else - high = tf->device & 0xf; low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; + if (lba48) { + tf = &cmd->hob; + high = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; + } else + high = tf->device & 0xf; return ((u64)high << 24) | low; } @@ -493,58 +49,73 @@ EXPORT_SYMBOL_GPL(ide_get_lba_addr); static void ide_dump_sector(ide_drive_t *drive) { - ide_task_t task; - struct ide_taskfile *tf = &task.tf; - int lba48 = (drive->addressing == 1) ? 1 : 0; + struct ide_cmd cmd; + struct ide_taskfile *tf = &cmd.tf; + u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48); - memset(&task, 0, sizeof(task)); - if (lba48) - task.tf_flags = IDE_TFLAG_IN_LBA | IDE_TFLAG_IN_HOB_LBA | - IDE_TFLAG_LBA48; - else - task.tf_flags = IDE_TFLAG_IN_LBA | IDE_TFLAG_IN_DEVICE; + memset(&cmd, 0, sizeof(cmd)); + if (lba48) { + cmd.valid.in.tf = IDE_VALID_LBA; + cmd.valid.in.hob = IDE_VALID_LBA; + cmd.tf_flags = IDE_TFLAG_LBA48; + } else + cmd.valid.in.tf = IDE_VALID_LBA | IDE_VALID_DEVICE; - ide_tf_read(drive, &task); + ide_tf_readback(drive, &cmd); if (lba48 || (tf->device & ATA_LBA)) - printk(", LBAsect=%llu", - (unsigned long long)ide_get_lba_addr(tf, lba48)); + printk(KERN_CONT ", LBAsect=%llu", + (unsigned long long)ide_get_lba_addr(&cmd, lba48)); else - printk(", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam, - tf->device & 0xf, tf->lbal); + printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam, + tf->device & 0xf, tf->lbal); } static void ide_dump_ata_error(ide_drive_t *drive, u8 err) { - printk("{ "); - if (err & ABRT_ERR) printk("DriveStatusError "); - if (err & ICRC_ERR) - printk((err & ABRT_ERR) ? "BadCRC " : "BadSector "); - if (err & ECC_ERR) printk("UncorrectableError "); - if (err & ID_ERR) printk("SectorIdNotFound "); - if (err & TRK0_ERR) printk("TrackZeroNotFound "); - if (err & MARK_ERR) printk("AddrMarkNotFound "); - printk("}"); - if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR || - (err & (ECC_ERR|ID_ERR|MARK_ERR))) { + printk(KERN_CONT "{ "); + if (err & ATA_ABORTED) + printk(KERN_CONT "DriveStatusError "); + if (err & ATA_ICRC) + printk(KERN_CONT "%s", + (err & ATA_ABORTED) ? "BadCRC " : "BadSector "); + if (err & ATA_UNC) + printk(KERN_CONT "UncorrectableError "); + if (err & ATA_IDNF) + printk(KERN_CONT "SectorIdNotFound "); + if (err & ATA_TRK0NF) + printk(KERN_CONT "TrackZeroNotFound "); + if (err & ATA_AMNF) + printk(KERN_CONT "AddrMarkNotFound "); + printk(KERN_CONT "}"); + if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK || + (err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) { + struct request *rq = drive->hwif->rq; + ide_dump_sector(drive); - if (HWGROUP(drive) && HWGROUP(drive)->rq) - printk(", sector=%llu", - (unsigned long long)HWGROUP(drive)->rq->sector); + + if (rq) + printk(KERN_CONT ", sector=%llu", + (unsigned long long)blk_rq_pos(rq)); } - printk("\n"); + printk(KERN_CONT "\n"); } static void ide_dump_atapi_error(ide_drive_t *drive, u8 err) { - printk("{ "); - if (err & ILI_ERR) printk("IllegalLengthIndication "); - if (err & EOM_ERR) printk("EndOfMedia "); - if (err & ABRT_ERR) printk("AbortedCommand "); - if (err & MCR_ERR) printk("MediaChangeRequested "); - if (err & LFS_ERR) printk("LastFailedSense=0x%02x ", - (err & LFS_ERR) >> 4); - printk("}\n"); + printk(KERN_CONT "{ "); + if (err & ATAPI_ILI) + printk(KERN_CONT "IllegalLengthIndication "); + if (err & ATAPI_EOM) + printk(KERN_CONT "EndOfMedia "); + if (err & ATA_ABORTED) + printk(KERN_CONT "AbortedCommand "); + if (err & ATA_MCR) + printk(KERN_CONT "MediaChangeRequested "); + if (err & ATAPI_LFS) + printk(KERN_CONT "LastFailedSense=0x%02x ", + (err & ATAPI_LFS) >> 4); + printk(KERN_CONT "}\n"); } /** @@ -560,34 +131,40 @@ static void ide_dump_atapi_error(ide_drive_t *drive, u8 err) u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat) { - unsigned long flags; u8 err = 0; - local_irq_save(flags); - printk("%s: %s: status=0x%02x { ", drive->name, msg, stat); - if (stat & BUSY_STAT) - printk("Busy "); + printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat); + if (stat & ATA_BUSY) + printk(KERN_CONT "Busy "); else { - if (stat & READY_STAT) printk("DriveReady "); - if (stat & WRERR_STAT) printk("DeviceFault "); - if (stat & SEEK_STAT) printk("SeekComplete "); - if (stat & DRQ_STAT) printk("DataRequest "); - if (stat & ECC_STAT) printk("CorrectedError "); - if (stat & INDEX_STAT) printk("Index "); - if (stat & ERR_STAT) printk("Error "); + if (stat & ATA_DRDY) + printk(KERN_CONT "DriveReady "); + if (stat & ATA_DF) + printk(KERN_CONT "DeviceFault "); + if (stat & ATA_DSC) + printk(KERN_CONT "SeekComplete "); + if (stat & ATA_DRQ) + printk(KERN_CONT "DataRequest "); + if (stat & ATA_CORR) + printk(KERN_CONT "CorrectedError "); + if (stat & ATA_IDX) + printk(KERN_CONT "Index "); + if (stat & ATA_ERR) + printk(KERN_CONT "Error "); } - printk("}\n"); - if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) { + printk(KERN_CONT "}\n"); + if ((stat & (ATA_BUSY | ATA_ERR)) == ATA_ERR) { err = ide_read_error(drive); - printk("%s: %s: error=0x%02x ", drive->name, msg, err); + printk(KERN_ERR "%s: %s: error=0x%02x ", drive->name, msg, err); if (drive->media == ide_disk) ide_dump_ata_error(drive, err); else ide_dump_atapi_error(drive, err); } - ide_dump_opcode(drive); - local_irq_restore(flags); + + printk(KERN_ERR "%s: possibly failed opcode: 0x%02x\n", + drive->name, drive->hwif->cmd.tf.command); + return err; } - EXPORT_SYMBOL(ide_dump_status);