diff options
Diffstat (limited to 'drivers/dma/ioat/dma.h')
| -rw-r--r-- | drivers/dma/ioat/dma.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h index e80e787fe64f..ccb400f5e279 100644 --- a/drivers/dma/ioat/dma.h +++ b/drivers/dma/ioat/dma.h @@ -43,6 +43,22 @@ enum ioat_interrupt { #define IOAT_DMA_DCA_ANY_CPU ~0 #define IOAT_WATCHDOG_PERIOD (2 * HZ) +#define to_ioat_chan(chan) container_of(chan, struct ioat_dma_chan, common) +#define to_ioatdma_device(dev) container_of(dev, struct ioatdma_device, common) +#define to_ioat_desc(lh) container_of(lh, struct ioat_desc_sw, node) +#define tx_to_ioat_desc(tx) container_of(tx, struct ioat_desc_sw, async_tx) + +#define chan_num(ch) ((int)((ch)->reg_base - (ch)->device->reg_base) / 0x80) + +#define RESET_DELAY msecs_to_jiffies(100) +#define WATCHDOG_DELAY round_jiffies(msecs_to_jiffies(2000)) + +/* + * workaround for IOAT ver.3.0 null descriptor issue + * (channel returns error when size is 0) + */ +#define NULL_DESC_BUFFER_SIZE 1 + /** * struct ioatdma_device - internal representation of a IOAT device |