drm/radeon/kms: Add initial support for async DMA on evergreen
Pretty similar to 6xx/7xx except the count field increased in the
packet header and the max IB size increased.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/evergreend.h b/drivers/gpu/drm/radeon/evergreend.h
index cae7ab4..92d1f45 100644
--- a/drivers/gpu/drm/radeon/evergreend.h
+++ b/drivers/gpu/drm/radeon/evergreend.h
@@ -905,6 +905,35 @@
# define DC_HPDx_RX_INT_TIMER(x) ((x) << 16)
# define DC_HPDx_EN (1 << 28)
+/* ASYNC DMA */
+#define DMA_RB_RPTR 0xd008
+#define DMA_RB_WPTR 0xd00c
+
+#define DMA_CNTL 0xd02c
+# define TRAP_ENABLE (1 << 0)
+# define SEM_INCOMPLETE_INT_ENABLE (1 << 1)
+# define SEM_WAIT_INT_ENABLE (1 << 2)
+# define DATA_SWAP_ENABLE (1 << 3)
+# define FENCE_SWAP_ENABLE (1 << 4)
+# define CTXEMPTY_INT_ENABLE (1 << 28)
+#define DMA_TILING_CONFIG 0xD0B8
+
+/* async DMA packets */
+#define DMA_PACKET(cmd, t, s, n) ((((cmd) & 0xF) << 28) | \
+ (((t) & 0x1) << 23) | \
+ (((s) & 0x1) << 22) | \
+ (((n) & 0xFFFFF) << 0))
+/* async DMA Packet types */
+#define DMA_PACKET_WRITE 0x2
+#define DMA_PACKET_COPY 0x3
+#define DMA_PACKET_INDIRECT_BUFFER 0x4
+#define DMA_PACKET_SEMAPHORE 0x5
+#define DMA_PACKET_FENCE 0x6
+#define DMA_PACKET_TRAP 0x7
+#define DMA_PACKET_SRBM_WRITE 0x9
+#define DMA_PACKET_CONSTANT_FILL 0xd
+#define DMA_PACKET_NOP 0xf
+
/* PCIE link stuff */
#define PCIE_LC_TRAINING_CNTL 0xa1 /* PCIE_P */
#define PCIE_LC_LINK_WIDTH_CNTL 0xa2 /* PCIE_P */