[Intel-gfx] [PATCH 2/9] drm/i915/cmdparser: Add the TIMESTAMP register for the other engines

[Chris Wilson]

Since I have been using the BCS_TIMESTAMP to measure latency of
execution upon the blitter ring, allow regular userspace to also read
from that register. They are already allowed RCS_TIMESTAMP!

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_cmd_parser.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c
index 1882dc28c750..5fbd049f8095 100644
--- a/drivers/gpu/drm/i915/i915_cmd_parser.c
+++ b/drivers/gpu/drm/i915/i915_cmd_parser.c
@@ -458,6 +458,7 @@ static const struct drm_i915_reg_descriptor gen7_render_regs[] = {
 	REG32(GEN7_GPGPU_DISPATCHDIMX),
 	REG32(GEN7_GPGPU_DISPATCHDIMY),
 	REG32(GEN7_GPGPU_DISPATCHDIMZ),
+	REG64_IDX(RING_TIMESTAMP, BSD_RING_BASE),
 	REG64_IDX(GEN7_SO_NUM_PRIMS_WRITTEN, 0),
 	REG64_IDX(GEN7_SO_NUM_PRIMS_WRITTEN, 1),
 	REG64_IDX(GEN7_SO_NUM_PRIMS_WRITTEN, 2),
@@ -473,6 +474,7 @@ static const struct drm_i915_reg_descriptor gen7_render_regs[] = {
 	REG32(GEN7_L3SQCREG1),
 	REG32(GEN7_L3CNTLREG2),
 	REG32(GEN7_L3CNTLREG3),
+	REG64_IDX(RING_TIMESTAMP, BLT_RING_BASE),
 };
 
 static const struct drm_i915_reg_descriptor hsw_render_regs[] = {
@@ -502,7 +504,10 @@ static const struct drm_i915_reg_descriptor hsw_render_regs[] = {
 };
 
 static const struct drm_i915_reg_descriptor gen7_blt_regs[] = {
+	REG64_IDX(RING_TIMESTAMP, RENDER_RING_BASE),
+	REG64_IDX(RING_TIMESTAMP, BSD_RING_BASE),
 	REG32(BCS_SWCTRL),
+	REG64_IDX(RING_TIMESTAMP, BLT_RING_BASE),
 };
 
 static const struct drm_i915_reg_descriptor ivb_master_regs[] = {
-- 
2.8.1