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-rw-r--r--drivers/scsi/sata_sil.c33
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index 510c2e0bd90e..9face3c6aa21 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -49,6 +49,7 @@
#define DRV_VERSION "0.9"
enum {
+ SIL_FLAG_RERR_ON_DMA_ACT = (1 << 29),
SIL_FLAG_MOD15WRITE = (1 << 30),
sil_3112 = 0,
@@ -202,7 +203,8 @@ static const struct ata_port_info sil_port_info[] = {
{
.sht = &sil_sht,
.host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
- ATA_FLAG_SRST | ATA_FLAG_MMIO,
+ ATA_FLAG_SRST | ATA_FLAG_MMIO |
+ SIL_FLAG_RERR_ON_DMA_ACT,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x3f, /* udma0-5 */
@@ -212,7 +214,8 @@ static const struct ata_port_info sil_port_info[] = {
{
.sht = &sil_sht,
.host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
- ATA_FLAG_SRST | ATA_FLAG_MMIO,
+ ATA_FLAG_SRST | ATA_FLAG_MMIO |
+ SIL_FLAG_RERR_ON_DMA_ACT,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x3f, /* udma0-5 */
@@ -229,12 +232,13 @@ static const struct {
unsigned long scr; /* SATA control register block */
unsigned long sien; /* SATA Interrupt Enable register */
unsigned long xfer_mode;/* data transfer mode register */
+ unsigned long sfis_cfg; /* SATA FIS reception config register */
} sil_port[] = {
/* port 0 ... */
- { 0x80, 0x8A, 0x00, 0x100, 0x148, 0xb4 },
- { 0xC0, 0xCA, 0x08, 0x180, 0x1c8, 0xf4 },
- { 0x280, 0x28A, 0x200, 0x300, 0x348, 0x2b4 },
- { 0x2C0, 0x2CA, 0x208, 0x380, 0x3c8, 0x2f4 },
+ { 0x80, 0x8A, 0x00, 0x100, 0x148, 0xb4, 0x14c },
+ { 0xC0, 0xCA, 0x08, 0x180, 0x1c8, 0xf4, 0x1cc },
+ { 0x280, 0x28A, 0x200, 0x300, 0x348, 0x2b4, 0x34c },
+ { 0x2C0, 0x2CA, 0x208, 0x380, 0x3c8, 0x2f4, 0x3cc },
/* ... port 3 */
};
@@ -484,6 +488,23 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
dev_printk(KERN_WARNING, &pdev->dev,
"cache line size not set. Driver may not function\n");
+ /* Apply R_ERR on DMA activate FIS errata workaround */
+ if (probe_ent->host_flags & SIL_FLAG_RERR_ON_DMA_ACT) {
+ int cnt;
+
+ for (i = 0, cnt = 0; i < probe_ent->n_ports; i++) {
+ tmp = readl(mmio_base + sil_port[i].sfis_cfg);
+ if ((tmp & 0x3) != 0x01)
+ continue;
+ if (!cnt)
+ dev_printk(KERN_INFO, &pdev->dev,
+ "Applying R_ERR on DMA activate "
+ "FIS errata fix\n");
+ writel(tmp & ~0x3, mmio_base + sil_port[i].sfis_cfg);
+ cnt++;
+ }
+ }
+
if (ent->driver_data == sil_3114) {
irq_mask = SIL_MASK_4PORT;