diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2015-08-26 23:17:24 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-09-21 18:40:05 +0300 |
| commit | ad4a7b5065c1b4f5176e7d031c3cc2b36f776884 (patch) | |
| tree | febe068710e3019801c09c014d6cee2843cb24c3 /drivers/dma/ioat/dma.h | |
| parent | 6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357f (diff) | |
| download | linux-ad4a7b5065c1b4f5176e7d031c3cc2b36f776884.tar.xz | |
dmaengine: ioatdma: adding shutdown support
The ioatdma needs to be queisced and block all additional op submission
during reboots. When NET_DMA was used, this caused issue as ops were still
being sent to ioatdma during reboots even though PCI BME has been turned
off. Even though NET_DMA has been deprecated, we need to prevent similar
situations. The shutdown handler should address that.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ioat/dma.h')
| -rw-r--r-- | drivers/dma/ioat/dma.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h index 1bc084986646..8f4e607d5817 100644 --- a/drivers/dma/ioat/dma.h +++ b/drivers/dma/ioat/dma.h @@ -82,8 +82,9 @@ struct ioatdma_device { struct dma_pool *sed_hw_pool[MAX_SED_POOLS]; struct dma_device dma_dev; u8 version; - struct msix_entry msix_entries[4]; - struct ioatdma_chan *idx[4]; +#define IOAT_MAX_CHANS 4 + struct msix_entry msix_entries[IOAT_MAX_CHANS]; + struct ioatdma_chan *idx[IOAT_MAX_CHANS]; struct dca_provider *dca; enum ioat_irq_mode irq_mode; u32 cap; @@ -95,6 +96,7 @@ struct ioatdma_chan { dma_addr_t last_completion; spinlock_t cleanup_lock; unsigned long state; + #define IOAT_CHAN_DOWN 0 #define IOAT_COMPLETION_ACK 1 #define IOAT_RESET_PENDING 2 #define IOAT_KOBJ_INIT_FAIL 3 |