[Intel-gfx] [PATCH 4/6] drm/i915: Parameterize MI_PREDICATE registers
Matt Roper
matthew.d.roper at intel.com
Thu Jan 20 06:38:07 UTC 2022
The various MI_PREDICATE registers have per-engine instances. Today we
only utilize the RCS0 instance of each, but that will likely change in
the future; switch to parameterized register definitions to make these
easier to work with going forward.
Of special note is MI_PREDICATE_RESULT_2; we only use it in one place in
the driver today in HSW-specific code. It turns out that the bspec
(page 94) lists two different offsets for this register on HSW; one is
in the standard location shared by all other platforms (base + 0x3bc)
and the other is an unusual location (0x2214). We're using the second,
non-standard offset in i915 today; that offset doesn't exist on any
other platforms (and it's not even 100% clear that it's correct for HSW)
so I've renamed the current non-standard definition to
HSW_MI_PREDICATE_RESULT_2; the new cross-platform parameterized macro
(which is still unused at the moment) uses the standard offset.
Cc: Jani Nikula <jani.nikula at intel.com>
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
drivers/gpu/drm/i915/gt/intel_engine_regs.h | 11 +++++++++++
drivers/gpu/drm/i915/gt/intel_gt.c | 2 +-
drivers/gpu/drm/i915/i915_cmd_parser.c | 4 ++--
drivers/gpu/drm/i915/i915_perf.c | 8 ++++----
drivers/gpu/drm/i915/i915_reg.h | 11 +----------
5 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_regs.h b/drivers/gpu/drm/i915/gt/intel_engine_regs.h
index daf4a241cf77..e9fec6214073 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_regs.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_regs.h
@@ -142,6 +142,17 @@
(REG_FIELD_PREP(CMD_CCTL_WRITE_OVERRIDE_MASK, (write) << 1) | \
REG_FIELD_PREP(CMD_CCTL_READ_OVERRIDE_MASK, (read) << 1))
+#define MI_PREDICATE_RESULT_2(base) _MMIO((base) + 0x3bc)
+#define LOWER_SLICE_ENABLED (1 << 0)
+#define LOWER_SLICE_DISABLED (0 << 0)
+#define MI_PREDICATE_SRC0(base) _MMIO((base) + 0x400)
+#define MI_PREDICATE_SRC0_UDW(base) _MMIO((base) + 0x400 + 4)
+#define MI_PREDICATE_SRC1(base) _MMIO((base) + 0x408)
+#define MI_PREDICATE_SRC1_UDW(base) _MMIO((base) + 0x408 + 4)
+#define MI_PREDICATE_DATA(base) _MMIO((base) + 0x410)
+#define MI_PREDICATE_RESULT(base) _MMIO((base) + 0x418)
+#define MI_PREDICATE_RESULT_1(base) _MMIO((base) + 0x41c)
+
#define RING_PP_DIR_DCLV(base) _MMIO((base) + 0x220)
#define PP_DIR_DCLV_2G 0xffffffff
#define RING_PP_DIR_BASE(base) _MMIO((base) + 0x228)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index 622cdfed8a8b..3889efb3ffa4 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -209,7 +209,7 @@ int intel_gt_init_hw(struct intel_gt *gt)
if (IS_HASWELL(i915))
intel_uncore_write(uncore,
- MI_PREDICATE_RESULT_2,
+ HSW_MI_PREDICATE_RESULT_2,
IS_HSW_GT3(i915) ?
LOWER_SLICE_ENABLED : LOWER_SLICE_DISABLED);
diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c
index 96c398051084..332b8ffb58f8 100644
--- a/drivers/gpu/drm/i915/i915_cmd_parser.c
+++ b/drivers/gpu/drm/i915/i915_cmd_parser.c
@@ -611,8 +611,8 @@ static const struct drm_i915_reg_descriptor gen7_render_regs[] = {
REG64(PS_INVOCATION_COUNT),
REG64(PS_DEPTH_COUNT),
REG64_IDX(RING_TIMESTAMP, RENDER_RING_BASE),
- REG64(MI_PREDICATE_SRC0),
- REG64(MI_PREDICATE_SRC1),
+ REG64_IDX(MI_PREDICATE_SRC0, RENDER_RING_BASE),
+ REG64_IDX(MI_PREDICATE_SRC1, RENDER_RING_BASE),
REG32(GEN7_3DPRIM_END_OFFSET),
REG32(GEN7_3DPRIM_START_VERTEX),
REG32(GEN7_3DPRIM_VERTEX_COUNT),
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index f25906f19d56..aa7ee60715f8 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -1684,7 +1684,7 @@ static int alloc_noa_wait(struct i915_perf_stream *stream)
stream, cs, true /* save */, CS_GPR(i),
INTEL_GT_SCRATCH_FIELD_PERF_CS_GPR + 8 * i, 2);
cs = save_restore_register(
- stream, cs, true /* save */, MI_PREDICATE_RESULT_1,
+ stream, cs, true /* save */, MI_PREDICATE_RESULT_1(RENDER_RING_BASE),
INTEL_GT_SCRATCH_FIELD_PERF_PREDICATE_RESULT_1, 1);
/* First timestamp snapshot location. */
@@ -1738,7 +1738,7 @@ static int alloc_noa_wait(struct i915_perf_stream *stream)
*/
*cs++ = MI_LOAD_REGISTER_REG | (3 - 2);
*cs++ = i915_mmio_reg_offset(CS_GPR(JUMP_PREDICATE));
- *cs++ = i915_mmio_reg_offset(MI_PREDICATE_RESULT_1);
+ *cs++ = i915_mmio_reg_offset(MI_PREDICATE_RESULT_1(RENDER_RING_BASE));
/* Restart from the beginning if we had timestamps roll over. */
*cs++ = (GRAPHICS_VER(i915) < 8 ?
@@ -1775,7 +1775,7 @@ static int alloc_noa_wait(struct i915_perf_stream *stream)
*/
*cs++ = MI_LOAD_REGISTER_REG | (3 - 2);
*cs++ = i915_mmio_reg_offset(CS_GPR(JUMP_PREDICATE));
- *cs++ = i915_mmio_reg_offset(MI_PREDICATE_RESULT_1);
+ *cs++ = i915_mmio_reg_offset(MI_PREDICATE_RESULT_1(RENDER_RING_BASE));
/* Predicate the jump. */
*cs++ = (GRAPHICS_VER(i915) < 8 ?
@@ -1791,7 +1791,7 @@ static int alloc_noa_wait(struct i915_perf_stream *stream)
stream, cs, false /* restore */, CS_GPR(i),
INTEL_GT_SCRATCH_FIELD_PERF_CS_GPR + 8 * i, 2);
cs = save_restore_register(
- stream, cs, false /* restore */, MI_PREDICATE_RESULT_1,
+ stream, cs, false /* restore */, MI_PREDICATE_RESULT_1(RENDER_RING_BASE),
INTEL_GT_SCRATCH_FIELD_PERF_PREDICATE_RESULT_1, 1);
/* And return to the ring. */
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 0cd690f2418a..ce732166f41a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -394,16 +394,7 @@
#define VGA_CR_INDEX_CGA 0x3d4
#define VGA_CR_DATA_CGA 0x3d5
-#define MI_PREDICATE_SRC0 _MMIO(0x2400)
-#define MI_PREDICATE_SRC0_UDW _MMIO(0x2400 + 4)
-#define MI_PREDICATE_SRC1 _MMIO(0x2408)
-#define MI_PREDICATE_SRC1_UDW _MMIO(0x2408 + 4)
-#define MI_PREDICATE_DATA _MMIO(0x2410)
-#define MI_PREDICATE_RESULT _MMIO(0x2418)
-#define MI_PREDICATE_RESULT_1 _MMIO(0x241c)
-#define MI_PREDICATE_RESULT_2 _MMIO(0x2214)
-#define LOWER_SLICE_ENABLED (1 << 0)
-#define LOWER_SLICE_DISABLED (0 << 0)
+#define HSW_MI_PREDICATE_RESULT_2 _MMIO(0x2214)
/*
* Registers used only by the command parser
--
2.34.1
More information about the Intel-gfx
mailing list