On 21/07/2021 00:20, Lucas De Marchi wrote:
We kept adding new engines and for that increasing hw_id unnecessarily:
it's not used since GRAPHICS_VER == 8. Prepend "gen6" to the field and
try to pack it in the structs to give a hint this field is actually not
used in recent platforms.
Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 12 ++++++------
drivers/gpu/drm/i915/gt/intel_engine_types.h | 2 +-
drivers/gpu/drm/i915/i915_reg.h | 2 +-
3 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index a11f69f2e46e..508221de411c 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -42,7 +42,7 @@
#define MAX_MMIO_BASES 3
struct engine_info {
- unsigned int hw_id;
+ u8 gen6_hw_id;
u8 class;
u8 instance;
/* mmio bases table *must* be sorted in reverse graphics_ver order */
@@ -54,7 +54,7 @@ struct engine_info {
static const struct engine_info intel_engines[] = {
[RCS0] = {
- .hw_id = RCS0_HW,
+ .gen6_hw_id = RCS0_HW,
.class = RENDER_CLASS,
.instance = 0,
.mmio_bases = {
@@ -62,7 +62,7 @@ static const struct engine_info intel_engines[] = {
},
},
[BCS0] = {
- .hw_id = BCS0_HW,
+ .gen6_hw_id = BCS0_HW,
.class = COPY_ENGINE_CLASS,
.instance = 0,
.mmio_bases = {
@@ -70,7 +70,7 @@ static const struct engine_info intel_engines[] = {
},
},
[VCS0] = {
- .hw_id = VCS0_HW,
+ .gen6_hw_id = VCS0_HW,
.class = VIDEO_DECODE_CLASS,
.instance = 0,
.mmio_bases = {
@@ -102,7 +102,7 @@ static const struct engine_info intel_engines[] = {
},
},
[VECS0] = {
- .hw_id = VECS0_HW,
+ .gen6_hw_id = VECS0_HW,
.class = VIDEO_ENHANCEMENT_CLASS,
.instance = 0,
.mmio_bases = {
@@ -290,7 +290,7 @@ static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id)
engine->i915 = i915;
engine->gt = gt;
engine->uncore = gt->uncore;
- engine->hw_id = info->hw_id;
+ engine->gen6_hw_id = info->gen6_hw_id;
guc_class = engine_class_to_guc_class(info->class);
engine->guc_id = MAKE_GUC_ID(guc_class, info->instance);
engine->mmio_base = __engine_mmio_base(i915, info->mmio_bases);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index a107eb58ffa2..266422d8d1b1 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -264,11 +264,11 @@ struct intel_engine_cs {
enum intel_engine_id id;
enum intel_engine_id legacy_idx;
- unsigned int hw_id;
unsigned int guc_id;
intel_engine_mask_t mask;
+ u8 gen6_hw_id;
u8 class;
u8 instance;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 943fe485c662..8750ffce9d61 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2572,7 +2572,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define ARB_MODE_BWGTLB_DISABLE (1 << 9)
#define ARB_MODE_SWIZZLE_BDW (1 << 1)
#define RENDER_HWS_PGA_GEN7 _MMIO(0x04080)
-#define RING_FAULT_REG(engine) _MMIO(0x4094 + 0x100 * (engine)->hw_id)
+#define RING_FAULT_REG(engine) _MMIO(0x4094 + 0x100 * (engine)->gen6_hw_id)
#define GEN8_RING_FAULT_REG _MMIO(0x4094)
#define GEN12_RING_FAULT_REG _MMIO(0xcec4)
#define GEN8_RING_FAULT_ENGINE_ID(x) (((x) >> 12) & 0x7)
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Regards,
Tvrtko
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