diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2013-04-10 16:44:32 -0700 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-04-15 22:46:15 +0530 |
| commit | d302398da99956a329c467f195b50d5aaf38fb75 (patch) | |
| tree | 325c58f7731b580dead0ef3dc1f862be9b363a58 /drivers/dma/ioat | |
| parent | 7727eaa4490b7244934fe31f05e7329f30715267 (diff) | |
| download | linux-stable-d302398da99956a329c467f195b50d5aaf38fb75.tar.gz linux-stable-d302398da99956a329c467f195b50d5aaf38fb75.tar.bz2 linux-stable-d302398da99956a329c467f195b50d5aaf38fb75.zip | |
ioatdma: S1200 platforms ioatdma channel 2 and 3 falsely advertise RAID cap
This workaround checks for channel 2&3 and remove RAID cap.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ioat')
| -rw-r--r-- | drivers/dma/ioat/dma_v3.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c index 71e113dfc8cc..b00b000f238b 100644 --- a/drivers/dma/ioat/dma_v3.c +++ b/drivers/dma/ioat/dma_v3.c @@ -238,6 +238,18 @@ static bool is_bwd_ioat(struct pci_dev *pdev) } } +static bool is_bwd_noraid(struct pci_dev *pdev) +{ + switch (pdev->device) { + case PCI_DEVICE_ID_INTEL_IOAT_BWD2: + case PCI_DEVICE_ID_INTEL_IOAT_BWD3: + return true; + default: + return false; + } + +} + static void pq16_set_src(struct ioat_raw_descriptor *desc[3], dma_addr_t addr, u32 offset, u8 coef, int idx) { @@ -1808,6 +1820,9 @@ int ioat3_dma_probe(struct ioatdma_device *device, int dca) cap = readl(device->reg_base + IOAT_DMA_CAP_OFFSET); + if (is_bwd_noraid(pdev)) + cap &= ~(IOAT_CAP_XOR | IOAT_CAP_PQ | IOAT_CAP_RAID16SS); + /* dca is incompatible with raid operations */ if (dca_en && (cap & (IOAT_CAP_XOR|IOAT_CAP_PQ))) cap &= ~(IOAT_CAP_XOR|IOAT_CAP_PQ); |