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sata_promise: TX2plus PATA support

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This patch implements a simple way of setting up per-port
flags on the SATA+PATA Promise TX2plus chips, which is a
prerequisite for supporting the PATA port on those chips.

It is based on the observation that ap->flags isn't really
used until after ->port_start() has been invoked. So it
places the "exceptional" per-port flags array in the driver's
private host structure, and uses it in ->port_start() to
finalise the port's flags.

This patch obsoletes the #promise-sata-pata branch included
in the #all branch.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Mikael Pettersson 2007-01-09 10:50:27 +01:00 committed by Jeff Garzik
parent 7a44e910f4
commit 870ae337d5
1 changed files with 22 additions and 5 deletions
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27
drivers/ata/sata_promise.c
View file

@ -92,6 +92,7 @@ struct pdc_port_priv {
struct pdc_host_priv {
unsigned long flags;
unsigned long port_flags[ATA_MAX_PORTS];
};
static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg);
@ -183,7 +184,7 @@ static const struct ata_port_info pdc_port_info[] = {
/* board_2037x */
{
.sht = &pdc_ata_sht,
.flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
.flags = PDC_COMMON_FLAGS,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 ; FIXME */
@ -213,7 +214,7 @@ static const struct ata_port_info pdc_port_info[] = {
/* board_2057x */
{
.sht = &pdc_ata_sht,
.flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
.flags = PDC_COMMON_FLAGS,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 ; FIXME */
@ -271,6 +272,11 @@ static int pdc_port_start(struct ata_port *ap)
struct pdc_port_priv *pp;
int rc;
/* fix up port flags and cable type for SATA+PATA chips */
ap->flags |= hp->port_flags[ap->port_no];
if (ap->flags & ATA_FLAG_SATA)
ap->cbl = ATA_CBL_SATA;
rc = ata_port_start(ap);
if (rc)
return rc;
@ -377,7 +383,7 @@ static void pdc_pata_phy_reset(struct ata_port *ap)
static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
{
if (sc_reg > SCR_CONTROL)
if (sc_reg > SCR_CONTROL || ap->cbl != ATA_CBL_SATA)
return 0xffffffffU;
return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
}
@ -386,7 +392,7 @@ static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg,
u32 val)
{
if (sc_reg > SCR_CONTROL)
if (sc_reg > SCR_CONTROL || ap->cbl != ATA_CBL_SATA)
return;
writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
}
@ -740,6 +746,7 @@ static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
unsigned int board_idx = (unsigned int) ent->driver_data;
int pci_dev_busy = 0;
int rc;
u8 tmp;
if (!printed_version++)
dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
@ -820,7 +827,17 @@ static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
hp->flags |= PDC_FLAG_GEN_II;
/* Fall through */
case board_2037x:
probe_ent->n_ports = 2;
/* TX2plus boards also have a PATA port */
tmp = readb(mmio_base + PDC_FLASH_CTL+1);
if (!(tmp & 0x80)) {
probe_ent->n_ports = 3;
pdc_ata_setup_port(&probe_ent->port[2], base + 0x300);
hp->port_flags[2] = ATA_FLAG_SLAVE_POSS;
printk(KERN_INFO DRV_NAME " PATA port found\n");
} else
probe_ent->n_ports = 2;
hp->port_flags[0] = ATA_FLAG_SATA;
hp->port_flags[1] = ATA_FLAG_SATA;
break;
case board_20619:
probe_ent->n_ports = 4;