ICH5_PCS = 0x92, /* port control and status */
PIIX_SCC = 0x0A, /* sub-class code register */
- PIIX_FLAG_IGN_PRESENT = (1 << 25), /* ignore PCS present bits */
+ PIIX_FLAG_IGNORE_PCS = (1 << 25), /* ignore PCS present bits */
PIIX_FLAG_SCR = (1 << 26), /* SCR available */
PIIX_FLAG_AHCI = (1 << 27), /* AHCI possible */
PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */
.name = DRV_NAME,
.ioctl = ata_scsi_ioctl,
.queuecommand = ata_scsi_queuecmd,
- .eh_timed_out = ata_scsi_timed_out,
- .eh_strategy_handler = ata_scsi_error,
.can_queue = ATA_DEF_QUEUE,
.this_id = ATA_SHT_THIS_ID,
.sg_tablesize = LIBATA_MAX_PRD,
.mask = 0x3,
.map = {
/* PM PS SM SS MAP */
- { P0, P1, P2, P3 }, /* 00b */
+ { P0, P2, P1, P3 }, /* 00b */
{ IDE, IDE, P1, P3 }, /* 01b */
{ P0, P2, IDE, IDE }, /* 10b */
{ RV, RV, RV, RV },
.mask = 0x3,
.map = {
/* PM PS SM SS MAP */
- { P0, P1, P2, P3 }, /* 00b */
+ { P0, P2, RV, RV }, /* 00b */
{ RV, RV, RV, RV },
{ P0, P2, IDE, IDE }, /* 10b */
{ RV, RV, RV, RV },
{
.sht = &piix_sht,
.host_flags = ATA_FLAG_SATA | PIIX_FLAG_COMBINED |
- PIIX_FLAG_CHECKINTR | PIIX_FLAG_IGN_PRESENT,
+ PIIX_FLAG_CHECKINTR | PIIX_FLAG_IGNORE_PCS,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 */
* piix_sata_probe - Probe PCI device for present SATA devices
* @ap: Port associated with the PCI device we wish to probe
*
- * Reads SATA PCI device's PCI config register Port Configuration
- * and Status (PCS) to determine port and device availability.
+ * Reads and configures SATA PCI device's PCI config register
+ * Port Configuration and Status (PCS) to determine port and
+ * device availability.
*
* LOCKING:
* None (inherited from caller).
*
* RETURNS:
- * Non-zero if port is enabled, it may or may not have a device
- * attached in that case (PRESENT bit would only be set if BIOS probe
- * was done). Zero is returned if port is disabled.
+ * Mask of avaliable devices on the port.
*/
-static int piix_sata_probe (struct ata_port *ap)
+static unsigned int piix_sata_probe (struct ata_port *ap)
{
struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
- int combined = (ap->flags & ATA_FLAG_SLAVE_POSS);
- int orig_mask, mask, i;
+ const unsigned int *map = ap->host_set->private_data;
+ int base = 2 * ap->hard_port_no;
+ unsigned int present_mask = 0;
+ int port, i;
u8 pcs;
pci_read_config_byte(pdev, ICH5_PCS, &pcs);
- orig_mask = (int) pcs & 0xff;
-
- /* TODO: this is vaguely wrong for ICH6 combined mode,
- * where only two of the four SATA ports are mapped
- * onto a single ATA channel. It is also vaguely inaccurate
- * for ICH5, which has only two ports. However, this is ok,
- * as further device presence detection code will handle
- * any false positives produced here.
- */
+ DPRINTK("ata%u: ENTER, pcs=0x%x base=%d\n", ap->id, pcs, base);
- for (i = 0; i < 4; i++) {
- mask = (PIIX_PORT_ENABLED << i);
+ /* enable all ports on this ap and wait for them to settle */
+ for (i = 0; i < 2; i++) {
+ port = map[base + i];
+ if (port >= 0)
+ pcs |= 1 << port;
+ }
+
+ pci_write_config_byte(pdev, ICH5_PCS, pcs);
+ msleep(100);
+
+ /* let's see which devices are present */
+ pci_read_config_byte(pdev, ICH5_PCS, &pcs);
- if ((orig_mask & mask) == mask)
- if (combined || (i == ap->hard_port_no))
- return 1;
+ for (i = 0; i < 2; i++) {
+ port = map[base + i];
+ if (port < 0)
+ continue;
+ if (ap->flags & PIIX_FLAG_IGNORE_PCS || pcs & 1 << (4 + port))
+ present_mask |= 1 << i;
+ else
+ pcs &= ~(1 << port);
}
- return 0;
+ /* disable offline ports on non-AHCI controllers */
+ if (!(ap->flags & PIIX_FLAG_AHCI))
+ pci_write_config_byte(pdev, ICH5_PCS, pcs);
+
+ DPRINTK("ata%u: LEAVE, pcs=0x%x present_mask=0x%x\n",
+ ap->id, pcs, present_mask);
+
+ return present_mask;
}
/**
/**
* piix_check_450nx_errata - Check for problem 450NX setup
* @ata_dev: the PCI device to check
- *
+ *
* Check for the present of 450NX errata #19 and errata #25. If
* they are found return an error code so we can turn off DMA
*/
u16 cfg;
u8 rev;
int no_piix_dma = 0;
-
+
while((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL)
{
/* Look for 450NX PXB. Check for problem configurations
if(no_piix_dma == 2)
dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n");
return no_piix_dma;
-}
+}
static void __devinit piix_init_sata_map(struct pci_dev *pdev,
struct ata_port_info *pinfo)
projects / linux-2.6 / blobdiff