Skip to content

Commit

Permalink
sata_svw: Add support for HT1100 SATA controller
Browse files Browse the repository at this point in the history 
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>
  • Loading branch information
Anantha Subramanyam authored and Jeff Garzik committed Feb 29, 2008
1 parent 7704a8b commit 931506d
Showing 1 changed file with 63 additions and 14 deletions.
77 changes: 63 additions & 14 deletions drivers/ata/sata_svw.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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
Expand All @@ -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,
Expand Down Expand Up @@ -88,19 +91,36 @@ 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);


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;

default:
return -1;
}

return 0;
}
}

static int k2_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
Expand Down Expand Up @@ -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,
Expand All @@ -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 |
Expand All @@ -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)
Expand Down Expand Up @@ -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");
Expand All @@ -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
Expand All @@ -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
Expand Down Expand Up @@ -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 },

{ }
};
Expand Down

0 comments on commit 931506d

Please sign in to comment.