diff options
Diffstat (limited to 'sys/dev/ioat/ioat.h')
| -rw-r--r-- | sys/dev/ioat/ioat.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/dev/ioat/ioat.h b/sys/dev/ioat/ioat.h index 5c64af1..e8f47ae 100644 --- a/sys/dev/ioat/ioat.h +++ b/sys/dev/ioat/ioat.h @@ -48,6 +48,14 @@ __FBSDID("$FreeBSD$"); #define DMA_NO_WAIT 0x2 #define DMA_ALL_FLAGS (DMA_INT_EN | DMA_NO_WAIT) +/* + * Hardware revision number. Different hardware revisions support different + * features. For example, 3.2 cannot read from MMIO space, while 3.3 can. + */ +#define IOAT_VER_3_0 0x30 +#define IOAT_VER_3_2 0x32 +#define IOAT_VER_3_3 0x33 + typedef void *bus_dmaengine_t; struct bus_dmadesc; typedef void (*bus_dmaengine_callback_t)(void *arg, int error); @@ -60,6 +68,9 @@ bus_dmaengine_t ioat_get_dmaengine(uint32_t channel_index); /* Release the DMA channel */ void ioat_put_dmaengine(bus_dmaengine_t dmaengine); +/* Check the DMA engine's HW version */ +int ioat_get_hwversion(bus_dmaengine_t dmaengine); + /* * Set interrupt coalescing on a DMA channel. * |
