1 files changed, 27 insertions, 9 deletions

diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index 49ed557a4b66..9d24d6c328b4 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -24,6 +24,11 @@
  *  If you do not delete the provisions above, a recipient may use your
  *  version of this file under either the OSL or the GPL.
  *
+ *  Documentation for SiI 3112:
+ *  http://gkernel.sourceforge.net/specs/sii/3112A_SiI-DS-0095-B2.pdf.bz2
+ *
+ *  Other errata and documentation available under NDA.
+ *
  */
 
 #include <linux/kernel.h>
@@ -41,8 +46,11 @@
 #define DRV_VERSION     "0.9"
 
 enum {
+        SIL_FLAG_MOD15WRITE     = (1 << 30),
+
         sil_3112                = 0,
-        sil_3114                = 1,
+        sil_3112_m15w           = 1,
+        sil_3114                = 2,
 
         SIL_FIFO_R0             = 0x40,
         SIL_FIFO_W0             = 0x41,
@@ -76,13 +84,13 @@ static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
 static void sil_post_set_mode (struct ata_port *ap);
 
 static struct pci_device_id sil_pci_tbl[] = {
-        { 0x1095, 0x3112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
-        { 0x1095, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
+        { 0x1095, 0x3112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
+        { 0x1095, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
         { 0x1095, 0x3512, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
         { 0x1095, 0x3114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3114 },
-        { 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
-        { 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
-        { 0x1002, 0x437a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
+        { 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
+        { 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
+        { 0x1002, 0x437a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
         { }     /* terminate list */
 };
 
@@ -174,6 +182,16 @@ static struct ata_port_info sil_port_info[] = {
                 .mwdma_mask     = 0x07,                 /* mwdma0-2 */
                 .udma_mask      = 0x3f,                 /* udma0-5 */
                 .port_ops       = &sil_ops,
+        }, /* sil_3112_15w - keep it sync'd w/ sil_3112 */
+        {
+                .sht            = &sil_sht,
+                .host_flags     = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
+                                  ATA_FLAG_SRST | ATA_FLAG_MMIO |
+                                  SIL_FLAG_MOD15WRITE,
+                .pio_mask       = 0x1f,                 /* pio0-4 */
+                .mwdma_mask     = 0x07,                 /* mwdma0-2 */
+                .udma_mask      = 0x3f,                 /* udma0-5 */
+                .port_ops       = &sil_ops,
         }, /* sil_3114 */
         {
                 .sht            = &sil_sht,
@@ -323,15 +341,15 @@ static void sil_dev_config(struct ata_port *ap, struct ata_device *dev)
         while ((len > 0) && (s[len - 1] == ' '))
                 len--;
 
-        for (n = 0; sil_blacklist[n].product; n++) 
+        for (n = 0; sil_blacklist[n].product; n++)
                 if (!memcmp(sil_blacklist[n].product, s,
                             strlen(sil_blacklist[n].product))) {
                         quirks = sil_blacklist[n].quirk;
                         break;
                 }
-        
+
         /* limit requests to 15 sectors */
-        if (quirks & SIL_QUIRK_MOD15WRITE) {
+        if ((ap->flags & SIL_FLAG_MOD15WRITE) && (quirks & SIL_QUIRK_MOD15WRITE)) {
                 printk(KERN_INFO "ata%u(%u): applying Seagate errata fix\n",
                        ap->id, dev->devno);
                 ap->host->max_sectors = 15;