ioatdma: Adding support for BDX-DE ioatdma.

Adding PCI device IDs and hooks in workarounds for Broadwell DE ioatdma.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

3 files changed, 15 insertions, 0 deletions

diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index be307182231e..61510abfabb7 100644
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -214,6 +214,11 @@ static bool is_bwd_ioat(struct pci_dev *pdev)
         case PCI_DEVICE_ID_INTEL_IOAT_BWD1:
         case PCI_DEVICE_ID_INTEL_IOAT_BWD2:
         case PCI_DEVICE_ID_INTEL_IOAT_BWD3:
+        /* even though not Atom, BDX-DE has same DMA silicon */
+        case PCI_DEVICE_ID_INTEL_IOAT_BDXDE0:
+        case PCI_DEVICE_ID_INTEL_IOAT_BDXDE1:
+        case PCI_DEVICE_ID_INTEL_IOAT_BDXDE2:
+        case PCI_DEVICE_ID_INTEL_IOAT_BDXDE3:
                 return true;
         default:
                 return false;
diff --git a/drivers/dma/ioat/hw.h b/drivers/dma/ioat/hw.h
index 62f83e983d8d..02177ecf09f8 100644
--- a/drivers/dma/ioat/hw.h
+++ b/drivers/dma/ioat/hw.h
@@ -57,6 +57,11 @@
 #define PCI_DEVICE_ID_INTEL_IOAT_BWD2   0x0C52
 #define PCI_DEVICE_ID_INTEL_IOAT_BWD3   0x0C53
 
+#define PCI_DEVICE_ID_INTEL_IOAT_BDXDE0 0x6f50
+#define PCI_DEVICE_ID_INTEL_IOAT_BDXDE1 0x6f51
+#define PCI_DEVICE_ID_INTEL_IOAT_BDXDE2 0x6f52
+#define PCI_DEVICE_ID_INTEL_IOAT_BDXDE3 0x6f53
+
 #define IOAT_VER_1_2            0x12    /* Version 1.2 */
 #define IOAT_VER_2_0            0x20    /* Version 2.0 */
 #define IOAT_VER_3_0            0x30    /* Version 3.0 */
diff --git a/drivers/dma/ioat/pci.c b/drivers/dma/ioat/pci.c
index 1d051cd045db..5501eb072d69 100644
--- a/drivers/dma/ioat/pci.c
+++ b/drivers/dma/ioat/pci.c
@@ -111,6 +111,11 @@ static struct pci_device_id ioat_pci_tbl[] = {
         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BWD2) },
         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BWD3) },
 
+        { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BDXDE0) },
+        { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BDXDE1) },
+        { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BDXDE2) },
+        { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_IOAT_BDXDE3) },
+
         { 0, }
 };
 MODULE_DEVICE_TABLE(pci, ioat_pci_tbl);