diff options
| author |   Dave Jiang <dave.jiang@intel.com> | 2019-02-22 09:59:59 -0700 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2019-02-25 12:18:38 +0530 |
| commit | 11e31e281bd8f482a9277268f7b0d9c213584271 (patch) | |
| tree | da78d45b537b56b9ea95f236040dcad92d610cd6 /drivers/dma | |
| parent | dmaengine: ioatdma: Add Snow Ridge ioatdma device id (diff) | |
| download | wireguard-linux-11e31e281bd8f482a9277268f7b0d9c213584271.tar.xz wireguard-linux-11e31e281bd8f482a9277268f7b0d9c213584271.zip | |
dmaengine: ioatdma: disable DCA enabling on IOATDMA v3.4
IOATDMA v3.4 does not support DCA. Disable
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ioat/hw.h | 1 | ||||
| -rw-r--r-- | drivers/dma/ioat/init.c | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/drivers/dma/ioat/hw.h b/drivers/dma/ioat/hw.h index 3e38877cae6b..781c94de8e81 100644 --- a/drivers/dma/ioat/hw.h +++ b/drivers/dma/ioat/hw.h @@ -73,6 +73,7 @@ #define IOAT_VER_3_0 0x30 /* Version 3.0 */ #define IOAT_VER_3_2 0x32 /* Version 3.2 */ #define IOAT_VER_3_3 0x33 /* Version 3.3 */ +#define IOAT_VER_3_4 0x34 /* Version 3.4 */ int system_has_dca_enabled(struct pci_dev *pdev); diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c index 3161dfbca505..58dd1bfd3edd 100644 --- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -1353,6 +1353,8 @@ static int ioat_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) pci_set_drvdata(pdev, device); device->version = readb(device->reg_base + IOAT_VER_OFFSET); + if (device->version >= IOAT_VER_3_4) + ioat_dca_enabled = 0; if (device->version >= IOAT_VER_3_0) { if (is_skx_ioat(pdev)) device->version = IOAT_VER_3_2; |