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Diffstat (limited to 'drivers/dma/ioat/dma.h')
-rw-r--r--drivers/dma/ioat/dma.h10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index b8e8e0b9693c..5216c6b7c99e 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -81,6 +81,11 @@ struct ioatdma_device {
u32 msixpba;
};
+#define IOAT_MAX_ORDER 16
+#define IOAT_MAX_DESCS (1 << IOAT_MAX_ORDER)
+#define IOAT_CHUNK_SIZE (SZ_2M)
+#define IOAT_DESCS_PER_CHUNK (IOAT_CHUNK_SIZE / IOAT_DESC_SZ)
+
struct ioat_descs {
void *virt;
dma_addr_t hw;
@@ -128,7 +133,7 @@ struct ioatdma_chan {
u16 produce;
struct ioat_ring_ent **ring;
spinlock_t prep_lock;
- struct ioat_descs descs[2];
+ struct ioat_descs descs[IOAT_MAX_DESCS / IOAT_DESCS_PER_CHUNK];
int desc_chunks;
int intr_coalesce;
int prev_intr_coalesce;
@@ -301,9 +306,6 @@ static inline bool is_ioat_bug(unsigned long err)
return !!err;
}
-#define IOAT_MAX_ORDER 16
-#define IOAT_MAX_DESCS 65536
-#define IOAT_DESCS_PER_2M 32768
static inline u32 ioat_ring_size(struct ioatdma_chan *ioat_chan)
{