--- sys/dev/ata/ata-pci.h.old	2009-02-21 22:57:26.000000000 +0000
+++ sys/dev/ata/ata-pci.h	2009-03-11 17:14:11.000000000 +0000
@@ -338,6 +338,7 @@
 #define ATA_SII3124		0x31241095
 #define ATA_SII3132		0x31321095
 #define ATA_SII3132_1		0x02421095
+#define ATA_SII3531		0x35311095
 #define ATA_SII0680             0x06801095
 #define ATA_CMD646              0x06461095
 #define ATA_CMD648              0x06481095
--- sys/dev/ata/chipsets/ata-siliconimage.c.old	2009-03-04 18:25:39.000000000 +0000
+++ sys/dev/ata/chipsets/ata-siliconimage.c	2009-03-11 17:14:16.000000000 +0000
@@ -99,6 +99,7 @@
      { ATA_SII3124,   0x00, SII_PRBIO, SII_4CH,    ATA_SA300, "3124" },
      { ATA_SII3132,   0x00, SII_PRBIO, 0,          ATA_SA300, "3132" },
      { ATA_SII3132_1, 0x00, SII_PRBIO, 0,          ATA_SA300, "3132" },
+     { ATA_SII3531,   0x00, SII_PRBIO, 0,          ATA_SA300, "3531" },
      { ATA_SII0680,   0x00, SII_MEMIO, SII_SETCLK, ATA_UDMA6, "680" },
      { ATA_CMD649,    0x00, 0,         SII_INTR,   ATA_UDMA5, "(CMD) 649" },
      { ATA_CMD648,    0x00, 0,         SII_INTR,   ATA_UDMA4, "(CMD) 648" },