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authorJeff Garzik <jgarzik@pobox.com>2006-02-20 16:56:08 -0500
committerJeff Garzik <jgarzik@pobox.com>2006-02-20 16:56:08 -0500
commit11fff8287fdaeb700df79aa8253650b60c7b21e2 (patch)
treea0b695f44810b4cf8c4b3f81dd25811a10871003 /drivers
parenta5fd79ccd60b7c9cc0221dfaaa950933eff6af99 (diff)
parentf131883e73a8662dc92c3ea371ae9ded0c8f2c37 (diff)
Merge branch 'upstream'
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/ata_piix.c78
-rw-r--r--drivers/scsi/libata-core.c18
-rw-r--r--drivers/scsi/sata_qstor.c2
3 files changed, 53 insertions, 45 deletions
diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 4cc1108f721..c662bf53151 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -131,8 +131,8 @@ enum {
static int piix_init_one (struct pci_dev *pdev,
const struct pci_device_id *ent);
-static void piix_pata_phy_reset(struct ata_port *ap);
-static void piix_sata_phy_reset(struct ata_port *ap);
+static int piix_pata_probe_reset(struct ata_port *ap, unsigned int *classes);
+static int piix_sata_probe_reset(struct ata_port *ap, unsigned int *classes);
static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev);
static void piix_set_dmamode (struct ata_port *ap, struct ata_device *adev);
@@ -207,7 +207,7 @@ static const struct ata_port_operations piix_pata_ops = {
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
- .phy_reset = piix_pata_phy_reset,
+ .probe_reset = piix_pata_probe_reset,
.bmdma_setup = ata_bmdma_setup,
.bmdma_start = ata_bmdma_start,
@@ -235,7 +235,7 @@ static const struct ata_port_operations piix_sata_ops = {
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
- .phy_reset = piix_sata_phy_reset,
+ .probe_reset = piix_sata_probe_reset,
.bmdma_setup = ata_bmdma_setup,
.bmdma_start = ata_bmdma_start,
@@ -258,8 +258,7 @@ static struct ata_port_info piix_port_info[] = {
/* ich5_pata */
{
.sht = &piix_sht,
- .host_flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST |
- PIIX_FLAG_CHECKINTR,
+ .host_flags = ATA_FLAG_SLAVE_POSS | PIIX_FLAG_CHECKINTR,
.pio_mask = 0x1f, /* pio0-4 */
#if 0
.mwdma_mask = 0x06, /* mwdma1-2 */
@@ -273,8 +272,8 @@ static struct ata_port_info piix_port_info[] = {
/* ich5_sata */
{
.sht = &piix_sht,
- .host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST |
- PIIX_FLAG_COMBINED | PIIX_FLAG_CHECKINTR,
+ .host_flags = ATA_FLAG_SATA | PIIX_FLAG_COMBINED |
+ PIIX_FLAG_CHECKINTR,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 */
@@ -284,7 +283,7 @@ static struct ata_port_info piix_port_info[] = {
/* piix4_pata */
{
.sht = &piix_sht,
- .host_flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
+ .host_flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f, /* pio0-4 */
#if 0
.mwdma_mask = 0x06, /* mwdma1-2 */
@@ -298,8 +297,7 @@ static struct ata_port_info piix_port_info[] = {
/* ich6_sata */
{
.sht = &piix_sht,
- .host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST |
- PIIX_FLAG_COMBINED_ICH6 |
+ .host_flags = ATA_FLAG_SATA | PIIX_FLAG_COMBINED_ICH6 |
PIIX_FLAG_CHECKINTR | ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
@@ -310,8 +308,7 @@ static struct ata_port_info piix_port_info[] = {
/* ich6_sata_ahci */
{
.sht = &piix_sht,
- .host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST |
- PIIX_FLAG_COMBINED_ICH6 |
+ .host_flags = ATA_FLAG_SATA | PIIX_FLAG_COMBINED_ICH6 |
PIIX_FLAG_CHECKINTR | ATA_FLAG_SLAVE_POSS |
PIIX_FLAG_AHCI,
.pio_mask = 0x1f, /* pio0-4 */
@@ -366,30 +363,42 @@ cbl40:
}
/**
- * piix_pata_phy_reset - Probe specified port on PATA host controller
- * @ap: Port to probe
+ * piix_pata_probeinit - probeinit for PATA host controller
+ * @ap: Target port
*
- * Probe PATA phy.
+ * Probeinit including cable detection.
*
* LOCKING:
* None (inherited from caller).
*/
+static void piix_pata_probeinit(struct ata_port *ap)
+{
+ piix_pata_cbl_detect(ap);
+ ata_std_probeinit(ap);
+}
-static void piix_pata_phy_reset(struct ata_port *ap)
+/**
+ * piix_pata_probe_reset - Perform reset on PATA port and classify
+ * @ap: Port to reset
+ * @classes: Resulting classes of attached devices
+ *
+ * Reset PATA phy and classify attached devices.
+ *
+ * LOCKING:
+ * None (inherited from caller).
+ */
+static int piix_pata_probe_reset(struct ata_port *ap, unsigned int *classes)
{
struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->hard_port_no])) {
- ata_port_disable(ap);
printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id);
- return;
+ return 0;
}
- piix_pata_cbl_detect(ap);
-
- ata_port_probe(ap);
-
- ata_bus_reset(ap);
+ return ata_drive_probe_reset(ap, piix_pata_probeinit,
+ ata_std_softreset, NULL,
+ ata_std_postreset, classes);
}
/**
@@ -437,28 +446,25 @@ static int piix_sata_probe (struct ata_port *ap)
}
/**
- * piix_sata_phy_reset - Probe specified port on SATA host controller
- * @ap: Port to probe
+ * piix_sata_probe_reset - Perform reset on SATA port and classify
+ * @ap: Port to reset
+ * @classes: Resulting classes of attached devices
*
- * Probe SATA phy.
+ * Reset SATA phy and classify attached devices.
*
* LOCKING:
* None (inherited from caller).
*/
-
-static void piix_sata_phy_reset(struct ata_port *ap)
+static int piix_sata_probe_reset(struct ata_port *ap, unsigned int *classes)
{
if (!piix_sata_probe(ap)) {
- ata_port_disable(ap);
printk(KERN_INFO "ata%u: SATA port has no device.\n", ap->id);
- return;
+ return 0;
}
- ap->cbl = ATA_CBL_SATA;
-
- ata_port_probe(ap);
-
- ata_bus_reset(ap);
+ return ata_drive_probe_reset(ap, ata_std_probeinit,
+ ata_std_softreset, NULL,
+ ata_std_postreset, classes);
}
/**
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index ed852348ba2..8b83c4e4520 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -2113,7 +2113,6 @@ int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class)
* This function is invoked after a successful reset. Note that
* the device might have been reset more than once using
* different reset methods before postreset is invoked.
- * postreset is also reponsible for setting cable type.
*
* This function is to be used as standard callback for
* ata_drive_*_reset().
@@ -2125,7 +2124,7 @@ void ata_std_postreset(struct ata_port *ap, unsigned int *classes)
{
DPRINTK("ENTER\n");
- /* set cable type */
+ /* set cable type if it isn't already set */
if (ap->cbl == ATA_CBL_NONE && ap->flags & ATA_FLAG_SATA)
ap->cbl = ATA_CBL_SATA;
@@ -2592,7 +2591,7 @@ static void ata_sg_clean(struct ata_queued_cmd *qc)
WARN_ON(sg == NULL);
if (qc->flags & ATA_QCFLAG_SINGLE)
- WARN_ON(qc->n_elem != 1);
+ WARN_ON(qc->n_elem > 1);
VPRINTK("unmapping %u sg elements\n", qc->n_elem);
@@ -2615,7 +2614,7 @@ static void ata_sg_clean(struct ata_queued_cmd *qc)
kunmap_atomic(addr, KM_IRQ0);
}
} else {
- if (sg_dma_len(&sg[0]) > 0)
+ if (qc->n_elem)
dma_unmap_single(ap->host_set->dev,
sg_dma_address(&sg[0]), sg_dma_len(&sg[0]),
dir);
@@ -2648,7 +2647,7 @@ static void ata_fill_sg(struct ata_queued_cmd *qc)
unsigned int idx;
WARN_ON(qc->__sg == NULL);
- WARN_ON(qc->n_elem == 0);
+ WARN_ON(qc->n_elem == 0 && qc->pad_len == 0);
idx = 0;
ata_for_each_sg(sg, qc) {
@@ -2793,6 +2792,7 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc)
int dir = qc->dma_dir;
struct scatterlist *sg = qc->__sg;
dma_addr_t dma_address;
+ int trim_sg = 0;
/* we must lengthen transfers to end on a 32-bit boundary */
qc->pad_len = sg->length & 3;
@@ -2812,13 +2812,15 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc)
sg_dma_len(psg) = ATA_DMA_PAD_SZ;
/* trim sg */
sg->length -= qc->pad_len;
+ if (sg->length == 0)
+ trim_sg = 1;
DPRINTK("padding done, sg->length=%u pad_len=%u\n",
sg->length, qc->pad_len);
}
- if (!sg->length) {
- sg_dma_address(sg) = 0;
+ if (trim_sg) {
+ qc->n_elem--;
goto skip_map;
}
@@ -2831,9 +2833,9 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc)
}
sg_dma_address(sg) = dma_address;
-skip_map:
sg_dma_len(sg) = sg->length;
+skip_map:
DPRINTK("mapped buffer of %d bytes for %s\n", sg_dma_len(sg),
qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
diff --git a/drivers/scsi/sata_qstor.c b/drivers/scsi/sata_qstor.c
index bfc1dc8e777..bf7bb9ec18d 100644
--- a/drivers/scsi/sata_qstor.c
+++ b/drivers/scsi/sata_qstor.c
@@ -277,7 +277,7 @@ static unsigned int qs_fill_sg(struct ata_queued_cmd *qc)
u8 *prd = pp->pkt + QS_CPB_BYTES;
WARN_ON(qc->__sg == NULL);
- WARN_ON(qc->n_elem == 0);
+ WARN_ON(qc->n_elem == 0 && qc->pad_len == 0);
nelem = 0;
ata_for_each_sg(sg, qc) {