diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 56 |
1 files changed, 45 insertions, 11 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index c5ba15af87d3..d1a05f9bb91f 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1043,8 +1043,8 @@ const char *sata_spd_string(unsigned int spd) * None. * * RETURNS: - * Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP or - * %ATA_DEV_UNKNOWN the event of failure. + * Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP, + * %ATA_DEV_ZAC, or %ATA_DEV_UNKNOWN the event of failure. */ unsigned int ata_dev_classify(const struct ata_taskfile *tf) { @@ -1089,6 +1089,11 @@ unsigned int ata_dev_classify(const struct ata_taskfile *tf) return ATA_DEV_SEMB; } + if ((tf->lbam == 0xcd) && (tf->lbah == 0xab)) { + DPRINTK("found ZAC device by sig\n"); + return ATA_DEV_ZAC; + } + DPRINTK("unknown device\n"); return ATA_DEV_UNKNOWN; } @@ -1329,7 +1334,7 @@ static int ata_hpa_resize(struct ata_device *dev) int rc; /* do we need to do it? */ - if (dev->class != ATA_DEV_ATA || + if ((dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC) || !ata_id_has_lba(dev->id) || !ata_id_hpa_enabled(dev->id) || (dev->horkage & ATA_HORKAGE_BROKEN_HPA)) return 0; @@ -1889,6 +1894,7 @@ retry: case ATA_DEV_SEMB: class = ATA_DEV_ATA; /* some hard drives report SEMB sig */ case ATA_DEV_ATA: + case ATA_DEV_ZAC: tf.command = ATA_CMD_ID_ATA; break; case ATA_DEV_ATAPI: @@ -1980,7 +1986,7 @@ retry: rc = -EINVAL; reason = "device reports invalid type"; - if (class == ATA_DEV_ATA) { + if (class == ATA_DEV_ATA || class == ATA_DEV_ZAC) { if (!ata_id_is_ata(id) && !ata_id_is_cfa(id)) goto err_out; if (ap->host->flags & ATA_HOST_IGNORE_ATA && @@ -2015,7 +2021,8 @@ retry: goto retry; } - if ((flags & ATA_READID_POSTRESET) && class == ATA_DEV_ATA) { + if ((flags & ATA_READID_POSTRESET) && + (class == ATA_DEV_ATA || class == ATA_DEV_ZAC)) { /* * The exact sequence expected by certain pre-ATA4 drives is: * SRST RESET @@ -2280,7 +2287,7 @@ int ata_dev_configure(struct ata_device *dev) sizeof(modelbuf)); /* ATA-specific feature tests */ - if (dev->class == ATA_DEV_ATA) { + if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { if (ata_id_is_cfa(id)) { /* CPRM may make this media unusable */ if (id[ATA_ID_CFA_KEY_MGMT] & 1) @@ -4033,6 +4040,7 @@ int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, if (ata_class_enabled(new_class) && new_class != ATA_DEV_ATA && new_class != ATA_DEV_ATAPI && + new_class != ATA_DEV_ZAC && new_class != ATA_DEV_SEMB) { ata_dev_info(dev, "class mismatch %u != %u\n", dev->class, new_class); @@ -4225,10 +4233,33 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { { "PIONEER DVD-RW DVR-216D", NULL, ATA_HORKAGE_NOSETXFER }, /* devices that don't properly handle queued TRIM commands */ - { "Micron_M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, }, - { "Crucial_CT???M500SSD*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, }, - { "Micron_M550*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, }, - { "Crucial_CT*M550SSD*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, }, + { "Micron_M[56]*", NULL, ATA_HORKAGE_NO_NCQ_TRIM | + ATA_HORKAGE_ZERO_AFTER_TRIM, }, + { "Crucial_CT*SSD*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, }, + + /* + * As defined, the DRAT (Deterministic Read After Trim) and RZAT + * (Return Zero After Trim) flags in the ATA Command Set are + * unreliable in the sense that they only define what happens if + * the device successfully executed the DSM TRIM command. TRIM + * is only advisory, however, and the device is free to silently + * ignore all or parts of the request. + * + * Whitelist drives that are known to reliably return zeroes + * after TRIM. + */ + + /* + * The intel 510 drive has buggy DRAT/RZAT. Explicitly exclude + * that model before whitelisting all other intel SSDs. + */ + { "INTEL*SSDSC2MH*", NULL, 0, }, + + { "INTEL*SSD*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM, }, + { "SSD*INTEL*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM, }, + { "Samsung*SSD*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM, }, + { "SAMSUNG*SSD*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM, }, + { "ST[1248][0248]0[FH]*", NULL, ATA_HORKAGE_ZERO_AFTER_TRIM, }, /* * Some WD SATA-I drives spin up and down erratically when the link @@ -4740,7 +4771,10 @@ static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap) return NULL; for (i = 0, tag = ap->last_tag + 1; i < max_queue; i++, tag++) { - tag = tag < max_queue ? tag : 0; + if (ap->flags & ATA_FLAG_LOWTAG) + tag = i; + else + tag = tag < max_queue ? tag : 0; /* the last tag is reserved for internal command. */ if (tag == ATA_TAG_INTERNAL) |