diff options
| -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); |