diff --git a/sys/dev/ahci/ahci.c b/sys/dev/ahci/ahci.c
index df4f66abf516..d26cdbb53d90 100644
--- a/sys/dev/ahci/ahci.c
+++ b/sys/dev/ahci/ahci.c
@@ -171,6 +171,7 @@ static struct {
 	{0x1d028086, 0x00, "Intel Patsburg",	0},
 	{0x1d048086, 0x00, "Intel Patsburg",	0},
 	{0x1d068086, 0x00, "Intel Patsburg",	0},
+	{0x28268086, 0x00, "Intel Patsburg (RAID)",	0},
 	{0x1e028086, 0x00, "Intel Panther Point",	0},
 	{0x1e038086, 0x00, "Intel Panther Point",	0},
 	{0x1e048086, 0x00, "Intel Panther Point",	0},
diff --git a/sys/dev/ata/ata-pci.h b/sys/dev/ata/ata-pci.h
index f18812fc56cf..90563f08840a 100644
--- a/sys/dev/ata/ata-pci.h
+++ b/sys/dev/ata/ata-pci.h
@@ -236,6 +236,7 @@ struct ata_pci_controller {
 #define ATA_PBG_AH1		0x1d028086
 #define ATA_PBG_R1		0x1d048086
 #define ATA_PBG_R2		0x1d068086
+#define ATA_PBG_R3		0x28268086
 #define ATA_PBG_S2		0x1d088086
 
 #define ATA_PPT_S1		0x1e008086
diff --git a/sys/dev/ata/chipsets/ata-intel.c b/sys/dev/ata/chipsets/ata-intel.c
index ebcfd79117af..edabe952560e 100644
--- a/sys/dev/ata/chipsets/ata-intel.c
+++ b/sys/dev/ata/chipsets/ata-intel.c
@@ -197,6 +197,7 @@ ata_intel_probe(device_t dev)
      { ATA_PBG_AH1,      0, INTEL_AHCI, 0, ATA_SA300, "Patsburg" },
      { ATA_PBG_R1,       0, INTEL_AHCI, 0, ATA_SA300, "Patsburg" },
      { ATA_PBG_R2,       0, INTEL_AHCI, 0, ATA_SA300, "Patsburg" },
+     { ATA_PBG_R3,       0, INTEL_AHCI, 0, ATA_SA300, "Patsburg" },
      { ATA_PBG_S2,       0, INTEL_6CH2, 0, ATA_SA300, "Patsburg" },
      { ATA_PPT_S1,       0, INTEL_6CH,  0, ATA_SA300, "Panther Point" },
      { ATA_PPT_S2,       0, INTEL_6CH,  0, ATA_SA300, "Panther Point" },