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sata_via: PATA support 

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan 2007-01-08 17:11:13 +00:00 committed by Jeff Garzik
parent 7dcbc1f2c8
commit d73f30e1c9
1 changed files with 102 additions and 6 deletions
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108
drivers/ata/sata_via.c
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@ -59,11 +59,14 @@ enum {
SATA_INT_GATE = 0x41, /* SATA interrupt gating */
SATA_NATIVE_MODE = 0x42, /* Native mode enable */
SATA_PATA_SHARING = 0x49, /* PATA/SATA sharing func ctrl */
PATA_UDMA_TIMING = 0xB3, /* PATA timing for DMA/ cable detect */
PATA_PIO_TIMING = 0xAB, /* PATA timing register */
PORT0 = (1 << 1),
PORT1 = (1 << 0),
ALL_PORTS = PORT0 | PORT1,
N_PORTS = 2,
PATA_PORT = 2, /* PATA is port 2 */
N_PORTS = 3,
NATIVE_MODE_ALL = (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
@ -76,6 +79,11 @@ static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
static void svia_noop_freeze(struct ata_port *ap);
static void vt6420_error_handler(struct ata_port *ap);
static void vt6421_sata_error_handler(struct ata_port *ap);
static void vt6421_pata_error_handler(struct ata_port *ap);
static void vt6421_set_pio_mode(struct ata_port *ap, struct ata_device *adev);
static void vt6421_set_dma_mode(struct ata_port *ap, struct ata_device *adev);
static int vt6421_port_start(struct ata_port *ap);
static const struct pci_device_id svia_pci_tbl[] = {
{ PCI_VDEVICE(VIA, 0x5337), vt6420 },
@ -142,8 +150,11 @@ static const struct ata_port_operations vt6420_sata_ops = {
.host_stop = ata_host_stop,
};
static const struct ata_port_operations vt6421_sata_ops = {
static const struct ata_port_operations vt6421_pata_ops = {
.port_disable = ata_port_disable,
.set_piomode = vt6421_set_pio_mode,
.set_dmamode = vt6421_set_dma_mode,
.tf_load = ata_tf_load,
.tf_read = ata_tf_read,
@ -162,7 +173,38 @@ static const struct ata_port_operations vt6421_sata_ops = {
.freeze = ata_bmdma_freeze,
.thaw = ata_bmdma_thaw,
.error_handler = ata_bmdma_error_handler,
.error_handler = vt6421_pata_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.port_start = vt6421_port_start,
.port_stop = ata_port_stop,
.host_stop = ata_host_stop,
};
static const struct ata_port_operations vt6421_sata_ops = {
.port_disable = ata_port_disable,
.tf_load = ata_tf_load,
.tf_read = ata_tf_read,
.check_status = ata_check_status,
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
.bmdma_setup = ata_bmdma_setup,
.bmdma_start = ata_bmdma_start,
.bmdma_stop = ata_bmdma_stop,
.bmdma_status = ata_bmdma_status,
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
.data_xfer = ata_pio_data_xfer,
.freeze = ata_bmdma_freeze,
.thaw = ata_bmdma_thaw,
.error_handler = vt6421_sata_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.irq_handler = ata_interrupt,
@ -171,7 +213,7 @@ static const struct ata_port_operations vt6421_sata_ops = {
.scr_read = svia_scr_read,
.scr_write = svia_scr_write,
.port_start = ata_port_start,
.port_start = vt6421_port_start,
.port_stop = ata_port_stop,
.host_stop = ata_host_stop,
};
@ -289,6 +331,61 @@ static void vt6420_error_handler(struct ata_port *ap)
NULL, ata_std_postreset);
}
static int vt6421_pata_prereset(struct ata_port *ap)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 tmp;
pci_read_config_byte(pdev, PATA_UDMA_TIMING, &tmp);
if (tmp & 0x10)
ap->cbl = ATA_CBL_PATA40;
else
ap->cbl = ATA_CBL_PATA80;
return 0;
}
static void vt6421_pata_error_handler(struct ata_port *ap)
{
return ata_bmdma_drive_eh(ap, vt6421_pata_prereset, ata_std_softreset,
NULL, ata_std_postreset);
}
static int vt6421_sata_prereset(struct ata_port *ap)
{
ap->cbl = ATA_CBL_SATA;
return 0;
}
static void vt6421_sata_error_handler(struct ata_port *ap)
{
return ata_bmdma_drive_eh(ap, vt6421_sata_prereset, ata_std_softreset,
NULL, ata_std_postreset);
}
static void vt6421_set_pio_mode(struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
static const u8 pio_bits[] = { 0xA8, 0x65, 0x65, 0x31, 0x20 };
pci_write_config_byte(pdev, PATA_PIO_TIMING, pio_bits[adev->pio_mode - XFER_PIO_0]);
}
static void vt6421_set_dma_mode(struct ata_port *ap, struct ata_device *adev)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
static const u8 udma_bits[] = { 0xEE, 0xE8, 0xE6, 0xE4, 0xE2, 0xE1, 0xE0, 0xE0 };
pci_write_config_byte(pdev, PATA_UDMA_TIMING, udma_bits[adev->pio_mode - XFER_UDMA_0]);
}
static int vt6421_port_start(struct ata_port *ap)
{
if (ap->port_no == PATA_PORT) {
ap->ops = &vt6421_pata_ops;
ap->mwdma_mask = 0;
ap->flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST;
}
return ata_port_start(ap);
}
static const unsigned int svia_bar_sizes[] = {
8, 4, 8, 4, 16, 256
};
@ -511,4 +608,3 @@ static void __exit svia_exit(void)
module_init(svia_init);
module_exit(svia_exit);