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path: root/drivers/dma/ioat/dma.h
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Diffstat (limited to 'drivers/dma/ioat/dma.h')
-rw-r--r--drivers/dma/ioat/dma.h49
1 files changed, 32 insertions, 17 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index 9f0c853b6a77..5b31db73ad8e 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 */
/**