From: Dave Airlie <airl...@redhat.com>
This adds support to the command parser for the set append counter
packet3, this is required to support atomic counters on
evergreen/cayman GPUs.
Signed-off-by: Dave Airlie <airlied at redhat.com>
---
drivers/gpu/drm/radeon/evergreen_cs.c | 38 +++++++++++++++++++++++++++++++++++
drivers/gpu/drm/radeon/evergreend.h | 20 ++++++++++++++++++
drivers/gpu/drm/radeon/radeon_drv.c | 3 ++-
3 files changed, 60 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c
b/drivers/gpu/drm/radeon/evergreen_cs.c
index 9e93205..1f618c5 100644
--- a/drivers/gpu/drm/radeon/evergreen_cs.c
+++ b/drivers/gpu/drm/radeon/evergreen_cs.c
@@ -2608,6 +2608,44 @@ static int evergreen_packet3_check(struct
radeon_cs_parser *p,
}
}
break;
+ case PACKET3_SET_APPEND_CNT:
+ {
+ uint32_t areg;
+ if (pkt->count != 2) {
+ DRM_ERROR("bad SET_APPEND_CNT (invalid count)\n");
+ return -EINVAL;
+ }
+
+ areg = idx_value >> 16;
+ if (areg < 0x1cb || areg > 0x1cb + 8) {
+ dev_warn(p->dev, "forbidden register for append cnt
0x%08x at %d\n",
+ areg, idx);
+ return -EINVAL;
+ }
+
+ if ((idx_value & 0x3) == 0x3) { /* Read from memory address */
+ uint64_t offset;
+ uint32_t swap;
+ r = radeon_cs_packet_next_reloc(p, &reloc, 0);
+ if (r) {
+ DRM_ERROR("bad SET_APPEND_CNT (missing
reloc)\n");
+ return -EINVAL;
+ }
+ offset = radeon_get_ib_value(p, idx+1);
+ swap = offset & 0x3;
+ offset &= ~0x3;
+
+ offset += ((u64)(radeon_get_ib_value(p, idx+2) & 0xff))
<< 32;
+
+ offset += reloc->gpu_offset;
+ ib[idx+1] = (offset & 0xfffffffc) | swap;
+ ib[idx+2] = upper_32_bits(offset) & 0xff;
+ } else {
+ DRM_ERROR("bad SET_APPEND_CNT (unsupported
operation)\n");
+ return -EINVAL;
+ }
+ break;
+ }
case PACKET3_NOP:
break;
default:
diff --git a/drivers/gpu/drm/radeon/evergreend.h
b/drivers/gpu/drm/radeon/evergreend.h
index 13b6029..2e2f740 100644
--- a/drivers/gpu/drm/radeon/evergreend.h
+++ b/drivers/gpu/drm/radeon/evergreend.h
@@ -1689,6 +1689,26 @@
#define PACKET3_SET_CONTEXT_REG_INDIRECT 0x73
#define PACKET3_SET_RESOURCE_INDIRECT 0x74
#define PACKET3_SET_APPEND_CNT 0x75
+/* SET_APPEND_CNT - documentation
+ * 1. header
+ * 2. COMMAND
+ * 1:0 - SOURCE SEL
+ * 15:2 - Reserved
+ * 31:16 - WR_REG_OFFSET - context register to write source data to.
+ * (one of R_02872C_GDS_APPEND_COUNT_0-8)
+ * 3. CONTROL
+ * (for source == mem)
+ * 31:2 SRC_ADDRESS_LO
+ * 0:1 SWAP
+ * (for source == GDS)
+ * 31:0 GDS offset
+ * (for source == DATA)
+ * 31:0 DATA
+ * (for source == REG)
+ * 31:0 REG
+ * 4. SRC_ADDRESS_HI[7:0]
+ * kernel driver 2.44 only supports SRC == MEM.
+ */
#define SQ_RESOURCE_CONSTANT_WORD7_0 0x3001c
#define S__SQ_CONSTANT_TYPE(x) (((x) & 3) <<
30)
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c
b/drivers/gpu/drm/radeon/radeon_drv.c
index a4b5dbd..1f96b04 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -93,9 +93,10 @@
* 2.41.0 - evergreen/cayman: Add SET_BASE/DRAW_INDIRECT command parsing
support
* 2.42.0 - Add VCE/VUI (Video Usability Information) support
* 2.43.0 - RADEON_INFO_GPU_RESET_COUNTER
+ * 2.44.0 - SET_APPEND_CNT packet3 support
*/
#define KMS_DRIVER_MAJOR 2
-#define KMS_DRIVER_MINOR 43
+#define KMS_DRIVER_MINOR 44
#define KMS_DRIVER_PATCHLEVEL 0
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags);
int radeon_driver_unload_kms(struct drm_device *dev);
--
2.5.5
