diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/dma/dmaengine.c | 6 | ||||
| -rw-r--r-- | drivers/dma/ioat/dma_v3.c | 10 |
3 files changed, 18 insertions, 0 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 5903a88351b..b401dadad4a 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -26,6 +26,8 @@ config INTEL_IOATDMA select DMA_ENGINE select DCA select ASYNC_TX_DISABLE_CHANNEL_SWITCH + select ASYNC_TX_DISABLE_PQ_VAL_DMA + select ASYNC_TX_DISABLE_XOR_VAL_DMA help Enable support for the Intel(R) I/OAT DMA engine present in recent Intel Xeon chipsets. diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index b6442f09d0f..8f99354082c 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -632,16 +632,22 @@ static bool device_has_all_tx_types(struct dma_device *device) #if defined(CONFIG_ASYNC_XOR) || defined(CONFIG_ASYNC_XOR_MODULE) if (!dma_has_cap(DMA_XOR, device->cap_mask)) return false; + + #ifndef CONFIG_ASYNC_TX_DISABLE_XOR_VAL_DMA if (!dma_has_cap(DMA_XOR_VAL, device->cap_mask)) return false; #endif + #endif #if defined(CONFIG_ASYNC_PQ) || defined(CONFIG_ASYNC_PQ_MODULE) if (!dma_has_cap(DMA_PQ, device->cap_mask)) return false; + + #ifndef CONFIG_ASYNC_TX_DISABLE_PQ_VAL_DMA if (!dma_has_cap(DMA_PQ_VAL, device->cap_mask)) return false; #endif + #endif return true; } diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c index 252cf2d3f1d..189788f6351 100644 --- a/drivers/dma/ioat/dma_v3.c +++ b/drivers/dma/ioat/dma_v3.c @@ -1206,6 +1206,16 @@ int __devinit ioat3_dma_probe(struct ioatdma_device *device, int dca) device->timer_fn = ioat2_timer_event; } + #ifdef CONFIG_ASYNC_TX_DISABLE_PQ_VAL_DMA + dma_cap_clear(DMA_PQ_VAL, dma->cap_mask); + dma->device_prep_dma_pq_val = NULL; + #endif + + #ifdef CONFIG_ASYNC_TX_DISABLE_XOR_VAL_DMA + dma_cap_clear(DMA_XOR_VAL, dma->cap_mask); + dma->device_prep_dma_xor_val = NULL; + #endif + /* -= IOAT ver.3 workarounds =- */ /* Write CHANERRMSK_INT with 3E07h to mask out the errors * that can cause stability issues for IOAT ver.3 |