diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r-- | drivers/ata/libata-core.c | 100 |
1 files changed, 55 insertions, 45 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 4166407eb47..a6de57e0204 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -59,7 +59,7 @@ #include "libata.h" -#define DRV_VERSION "2.20" /* must be exactly four chars */ +#define DRV_VERSION "2.21" /* must be exactly four chars */ /* debounce timing parameters in msecs { interval, duration, timeout } */ @@ -101,12 +101,6 @@ int libata_noacpi = 1; module_param_named(noacpi, libata_noacpi, int, 0444); MODULE_PARM_DESC(noacpi, "Disables the use of ACPI in suspend/resume when set"); -int ata_spindown_compat = 1; -module_param_named(spindown_compat, ata_spindown_compat, int, 0644); -MODULE_PARM_DESC(spindown_compat, "Enable backward compatible spindown " - "behavior. Will be removed. More info can be found in " - "Documentation/feature-removal-schedule.txt\n"); - MODULE_AUTHOR("Jeff Garzik"); MODULE_DESCRIPTION("Library module for ATA devices"); MODULE_LICENSE("GPL"); @@ -983,7 +977,7 @@ static u64 ata_hpa_resize(struct ata_device *dev) { u64 sectors = dev->n_sectors; u64 hpa_sectors; - + if (ata_id_has_lba48(dev->id)) hpa_sectors = ata_read_native_max_address_ext(dev); else @@ -1594,7 +1588,7 @@ unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd) * Check if the current speed of the device requires IORDY. Used * by various controllers for chip configuration. */ - + unsigned int ata_pio_need_iordy(const struct ata_device *adev) { /* Controller doesn't support IORDY. Probably a pointless check @@ -1617,7 +1611,7 @@ unsigned int ata_pio_need_iordy(const struct ata_device *adev) * Compute the highest mode possible if we are not using iordy. Return * -1 if no iordy mode is available. */ - + static u32 ata_pio_mask_no_iordy(const struct ata_device *adev) { /* If we have no drive specific rule, then PIO 2 is non IORDY */ @@ -1919,7 +1913,6 @@ int ata_dev_configure(struct ata_device *dev) snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id)); dev->n_sectors = ata_id_n_sectors(id); - dev->n_sectors_boot = dev->n_sectors; /* SCSI only uses 4-char revisions, dump full 8 chars from ATA */ ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV, @@ -2670,7 +2663,7 @@ int ata_timing_compute(struct ata_device *adev, unsigned short speed, t->active += (t->cycle - (t->active + t->recover)) / 2; t->recover = t->cycle - t->active; } - + /* In a few cases quantisation may produce enough errors to leave t->cycle too low for the sum of active and recovery if so we must correct this */ @@ -2900,9 +2893,6 @@ int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev) if (used_dma && (ap->host->flags & ATA_HOST_SIMPLEX)) ap->host->simplex_claimed = ap; - /* step5: chip specific finalisation */ - if (ap->ops->post_set_mode) - ap->ops->post_set_mode(ap); out: if (rc) *r_failed_dev = dev; @@ -3632,7 +3622,6 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, const u16 *old_id = dev->id; unsigned char model[2][ATA_ID_PROD_LEN + 1]; unsigned char serial[2][ATA_ID_SERNO_LEN + 1]; - u64 new_n_sectors; if (dev->class != new_class) { ata_dev_printk(dev, KERN_INFO, "class mismatch %d != %d\n", @@ -3644,7 +3633,6 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1])); ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0])); ata_id_c_string(new_id, serial[1], ATA_ID_SERNO, sizeof(serial[1])); - new_n_sectors = ata_id_n_sectors(new_id); if (strcmp(model[0], model[1])) { ata_dev_printk(dev, KERN_INFO, "model number mismatch " @@ -3658,25 +3646,12 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, return 0; } - if (dev->class == ATA_DEV_ATA && dev->n_sectors != new_n_sectors) { - ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch " - "%llu != %llu\n", - (unsigned long long)dev->n_sectors, - (unsigned long long)new_n_sectors); - /* Are we the boot time size - if so we appear to be the - same disk at this point and our HPA got reapplied */ - if (ata_ignore_hpa && dev->n_sectors_boot == new_n_sectors - && ata_id_hpa_enabled(new_id)) - return 1; - return 0; - } - return 1; } /** - * ata_dev_revalidate - Revalidate ATA device - * @dev: device to revalidate + * ata_dev_reread_id - Re-read IDENTIFY data + * @adev: target ATA device * @readid_flags: read ID flags * * Re-read IDENTIFY page and make sure @dev is still attached to @@ -3688,34 +3663,68 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, * RETURNS: * 0 on success, negative errno otherwise */ -int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags) +int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags) { unsigned int class = dev->class; u16 *id = (void *)dev->ap->sector_buf; int rc; - if (!ata_dev_enabled(dev)) { - rc = -ENODEV; - goto fail; - } - /* read ID data */ rc = ata_dev_read_id(dev, &class, readid_flags, id); if (rc) - goto fail; + return rc; /* is the device still there? */ - if (!ata_dev_same_device(dev, class, id)) { - rc = -ENODEV; - goto fail; - } + if (!ata_dev_same_device(dev, class, id)) + return -ENODEV; memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS); + return 0; +} + +/** + * ata_dev_revalidate - Revalidate ATA device + * @dev: device to revalidate + * @readid_flags: read ID flags + * + * Re-read IDENTIFY page, make sure @dev is still attached to the + * port and reconfigure it according to the new IDENTIFY page. + * + * LOCKING: + * Kernel thread context (may sleep) + * + * RETURNS: + * 0 on success, negative errno otherwise + */ +int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags) +{ + u64 n_sectors = dev->n_sectors; + int rc; + + if (!ata_dev_enabled(dev)) + return -ENODEV; + + /* re-read ID */ + rc = ata_dev_reread_id(dev, readid_flags); + if (rc) + goto fail; /* configure device according to the new ID */ rc = ata_dev_configure(dev); - if (rc == 0) - return 0; + if (rc) + goto fail; + + /* verify n_sectors hasn't changed */ + if (dev->class == ATA_DEV_ATA && dev->n_sectors != n_sectors) { + ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch " + "%llu != %llu\n", + (unsigned long long)n_sectors, + (unsigned long long)dev->n_sectors); + rc = -ENODEV; + goto fail; + } + + return 0; fail: ata_dev_printk(dev, KERN_ERR, "revalidation failed (errno=%d)\n", rc); @@ -3759,6 +3768,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { { "ATAPI CD-ROM DRIVE 40X MAXIMUM",NULL,ATA_HORKAGE_NODMA }, { "_NEC DV5800A", NULL, ATA_HORKAGE_NODMA }, { "SAMSUNG CD-ROM SN-124","N001", ATA_HORKAGE_NODMA }, + { "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA }, /* Weird ATAPI devices */ { "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 | |