diff options
Diffstat (limited to 'drivers/dma/ioat/dma.h')
| -rw-r--r-- | drivers/dma/ioat/dma.h | 49 |
1 files changed, 32 insertions, 17 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h index 9f0c853b6a7..5b31db73ad8 100644 --- a/drivers/dma/ioat/dma.h +++ b/drivers/dma/ioat/dma.h @@ -35,7 +35,6 @@ #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, txd) @@ -74,37 +73,24 @@ struct ioatdma_device { u8 version; struct delayed_work work; struct msix_entry msix_entries[4]; - struct ioat_dma_chan *idx[4]; + struct ioat_chan_common *idx[4]; struct dca_provider *dca; void (*intr_quirk)(struct ioatdma_device *device); }; -/** - * struct ioat_dma_chan - internal representation of a DMA channel - */ -struct ioat_dma_chan { - +struct ioat_chan_common { void __iomem *reg_base; - dma_cookie_t completed_cookie; unsigned long last_completion; unsigned long last_completion_time; - size_t xfercap; /* XFERCAP register value expanded out */ - spinlock_t cleanup_lock; - spinlock_t desc_lock; - struct list_head free_desc; - struct list_head used_desc; + dma_cookie_t completed_cookie; unsigned long watchdog_completion; int watchdog_tcp_cookie; u32 watchdog_last_tcp_cookie; struct delayed_work work; - int pending; - u16 dmacount; - u16 desccount; - struct ioatdma_device *device; struct dma_chan common; @@ -120,6 +106,35 @@ struct ioat_dma_chan { struct tasklet_struct cleanup_task; }; +/** + * struct ioat_dma_chan - internal representation of a DMA channel + */ +struct ioat_dma_chan { + struct ioat_chan_common base; + + size_t xfercap; /* XFERCAP register value expanded out */ + + spinlock_t desc_lock; + struct list_head free_desc; + struct list_head used_desc; + + int pending; + u16 dmacount; + u16 desccount; +}; + +static inline struct ioat_chan_common *to_chan_common(struct dma_chan *c) +{ + return container_of(c, struct ioat_chan_common, common); +} + +static inline struct ioat_dma_chan *to_ioat_chan(struct dma_chan *c) +{ + struct ioat_chan_common *chan = to_chan_common(c); + + return container_of(chan, struct ioat_dma_chan, base); +} + /* wrapper around hardware descriptor format + additional software fields */ /** |