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sata_svw: Add support for HT1100 SATA controller 

This patch adds support (including ATAPI DMA) for HT1100 (aka BCM11000) SATA controller.

Signed-off-by: Anantha Subramanyam <ananth@broadcom.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Anantha Subramanyam 2008-02-28 15:58:35 -08:00 committed by Jeff Garzik
parent 7704a8b6fc
commit 931506d3b2
1 changed files with 63 additions and 14 deletions
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77
drivers/ata/sata_svw.c
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@ -45,6 +45,8 @@
#include <linux/interrupt.h>
#include <linux/device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi.h>
#include <linux/libata.h>
#ifdef CONFIG_PPC_OF
@ -59,6 +61,7 @@ enum {
/* ap->flags bits */
K2_FLAG_SATA_8_PORTS = (1 << 24),
K2_FLAG_NO_ATAPI_DMA = (1 << 25),
K2_FLAG_BAR_POS_3 = (1 << 26),
/* Taskfile registers offsets */
K2_SATA_TF_CMD_OFFSET = 0x00,
@ -88,8 +91,10 @@ enum {
/* Port stride */
K2_SATA_PORT_OFFSET = 0x100,
board_svw4 = 0,
board_svw8 = 1,
chip_svw4 = 0,
chip_svw8 = 1,
chip_svw42 = 2, /* bar 3 */
chip_svw43 = 3, /* bar 5 */
};
static u8 k2_stat_check_status(struct ata_port *ap);
@ -97,10 +102,25 @@ static u8 k2_stat_check_status(struct ata_port *ap);
static int k2_sata_check_atapi_dma(struct ata_queued_cmd *qc)
{
u8 cmnd = qc->scsicmd->cmnd[0];
if (qc->ap->flags & K2_FLAG_NO_ATAPI_DMA)
return -1; /* ATAPI DMA not supported */
else {
switch (cmnd) {
case READ_10:
case READ_12:
case READ_16:
case WRITE_10:
case WRITE_12:
case WRITE_16:
return 0;
return 0;
default:
return -1;
}
}
}
static int k2_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
@ -354,7 +374,7 @@ static const struct ata_port_operations k2_sata_ops = {
};
static const struct ata_port_info k2_port_info[] = {
/* board_svw4 */
/* chip_svw4 */
{
.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | K2_FLAG_NO_ATAPI_DMA,
@ -363,7 +383,7 @@ static const struct ata_port_info k2_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &k2_sata_ops,
},
/* board_svw8 */
/* chip_svw8 */
{
.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | K2_FLAG_NO_ATAPI_DMA |
@ -373,6 +393,24 @@ static const struct ata_port_info k2_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &k2_sata_ops,
},
/* chip_svw42 */
{
.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | K2_FLAG_BAR_POS_3,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA6,
.port_ops = &k2_sata_ops,
},
/* chip_svw43 */
{
.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = ATA_UDMA6,
.port_ops = &k2_sata_ops,
},
};
static void k2_sata_setup_port(struct ata_ioports *port, void __iomem *base)
@ -402,7 +440,7 @@ static int k2_sata_init_one(struct pci_dev *pdev, const struct pci_device_id *en
{ &k2_port_info[ent->driver_data], NULL };
struct ata_host *host;
void __iomem *mmio_base;
int n_ports, i, rc;
int n_ports, i, rc, bar_pos;
if (!printed_version++)
dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
@ -416,6 +454,9 @@ static int k2_sata_init_one(struct pci_dev *pdev, const struct pci_device_id *en
if (!host)
return -ENOMEM;
bar_pos = 5;
if (ppi[0]->flags & K2_FLAG_BAR_POS_3)
bar_pos = 3;
/*
* If this driver happens to only be useful on Apple's K2, then
* we should check that here as it has a normal Serverworks ID
@ -428,17 +469,23 @@ static int k2_sata_init_one(struct pci_dev *pdev, const struct pci_device_id *en
* Check if we have resources mapped at all (second function may
* have been disabled by firmware)
*/
if (pci_resource_len(pdev, 5) == 0)
if (pci_resource_len(pdev, bar_pos) == 0) {
/* In IDE mode we need to pin the device to ensure that
pcim_release does not clear the busmaster bit in config
space, clearing causes busmaster DMA to fail on
ports 3 & 4 */
pcim_pin_device(pdev);
return -ENODEV;
}
/* Request and iomap PCI regions */
rc = pcim_iomap_regions(pdev, 1 << 5, DRV_NAME);
rc = pcim_iomap_regions(pdev, 1 << bar_pos, DRV_NAME);
if (rc == -EBUSY)
pcim_pin_device(pdev);
if (rc)
return rc;
host->iomap = pcim_iomap_table(pdev);
mmio_base = host->iomap[5];
mmio_base = host->iomap[bar_pos];
/* different controllers have different number of ports - currently 4 or 8 */
/* All ports are on the same function. Multi-function device is no
@ -483,11 +530,13 @@ static int k2_sata_init_one(struct pci_dev *pdev, const struct pci_device_id *en
* controller
* */
static const struct pci_device_id k2_sata_pci_tbl[] = {
{ PCI_VDEVICE(SERVERWORKS, 0x0240), board_svw4 },
{ PCI_VDEVICE(SERVERWORKS, 0x0241), board_svw4 },
{ PCI_VDEVICE(SERVERWORKS, 0x0242), board_svw8 },
{ PCI_VDEVICE(SERVERWORKS, 0x024a), board_svw4 },
{ PCI_VDEVICE(SERVERWORKS, 0x024b), board_svw4 },
{ PCI_VDEVICE(SERVERWORKS, 0x0240), chip_svw4 },
{ PCI_VDEVICE(SERVERWORKS, 0x0241), chip_svw4 },
{ PCI_VDEVICE(SERVERWORKS, 0x0242), chip_svw8 },
{ PCI_VDEVICE(SERVERWORKS, 0x024a), chip_svw4 },
{ PCI_VDEVICE(SERVERWORKS, 0x024b), chip_svw4 },
{ PCI_VDEVICE(SERVERWORKS, 0x0410), chip_svw42 },
{ PCI_VDEVICE(SERVERWORKS, 0x0411), chip_svw43 },
{ }
};