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-rw-r--r--drivers/gpu/drm/i915/gt/intel_engine_cs.c97
-rw-r--r--drivers/gpu/drm/i915/gt/intel_engine_types.h14
-rw-r--r--drivers/gpu/drm/i915/gt/intel_gt.c138
3 files changed, 133 insertions, 116 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index d4e29da74612..f3a91e7f85f7 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -9,6 +9,7 @@
#include "gem/i915_gem_context.h"
#include "gem/i915_gem_internal.h"
+#include "gt/intel_gt_print.h"
#include "gt/intel_gt_regs.h"
#include "i915_cmd_parser.h"
@@ -1143,12 +1144,108 @@ err_put:
return ret;
}
+static int intel_engine_init_tlb_invalidation(struct intel_engine_cs *engine)
+{
+ static const union intel_engine_tlb_inv_reg gen8_regs[] = {
+ [RENDER_CLASS].reg = GEN8_RTCR,
+ [VIDEO_DECODE_CLASS].reg = GEN8_M1TCR, /* , GEN8_M2TCR */
+ [VIDEO_ENHANCEMENT_CLASS].reg = GEN8_VTCR,
+ [COPY_ENGINE_CLASS].reg = GEN8_BTCR,
+ };
+ static const union intel_engine_tlb_inv_reg gen12_regs[] = {
+ [RENDER_CLASS].reg = GEN12_GFX_TLB_INV_CR,
+ [VIDEO_DECODE_CLASS].reg = GEN12_VD_TLB_INV_CR,
+ [VIDEO_ENHANCEMENT_CLASS].reg = GEN12_VE_TLB_INV_CR,
+ [COPY_ENGINE_CLASS].reg = GEN12_BLT_TLB_INV_CR,
+ [COMPUTE_CLASS].reg = GEN12_COMPCTX_TLB_INV_CR,
+ };
+ static const union intel_engine_tlb_inv_reg xehp_regs[] = {
+ [RENDER_CLASS].mcr_reg = XEHP_GFX_TLB_INV_CR,
+ [VIDEO_DECODE_CLASS].mcr_reg = XEHP_VD_TLB_INV_CR,
+ [VIDEO_ENHANCEMENT_CLASS].mcr_reg = XEHP_VE_TLB_INV_CR,
+ [COPY_ENGINE_CLASS].mcr_reg = XEHP_BLT_TLB_INV_CR,
+ [COMPUTE_CLASS].mcr_reg = XEHP_COMPCTX_TLB_INV_CR,
+ };
+ struct drm_i915_private *i915 = engine->i915;
+ const unsigned int instance = engine->instance;
+ const unsigned int class = engine->class;
+ const union intel_engine_tlb_inv_reg *regs;
+ union intel_engine_tlb_inv_reg reg;
+ unsigned int num = 0;
+ u32 val;
+
+ /*
+ * New platforms should not be added with catch-all-newer (>=)
+ * condition so that any later platform added triggers the below warning
+ * and in turn mandates a human cross-check of whether the invalidation
+ * flows have compatible semantics.
+ *
+ * For instance with the 11.00 -> 12.00 transition three out of five
+ * respective engine registers were moved to masked type. Then after the
+ * 12.00 -> 12.50 transition multi cast handling is required too.
+ */
+
+ if (GRAPHICS_VER_FULL(i915) == IP_VER(12, 50) ||
+ GRAPHICS_VER_FULL(i915) == IP_VER(12, 55)) {
+ regs = xehp_regs;
+ num = ARRAY_SIZE(xehp_regs);
+ } else if (GRAPHICS_VER_FULL(i915) == IP_VER(12, 0) ||
+ GRAPHICS_VER_FULL(i915) == IP_VER(12, 10)) {
+ regs = gen12_regs;
+ num = ARRAY_SIZE(gen12_regs);
+ } else if (GRAPHICS_VER(i915) >= 8 && GRAPHICS_VER(i915) <= 11) {
+ regs = gen8_regs;
+ num = ARRAY_SIZE(gen8_regs);
+ } else if (GRAPHICS_VER(i915) < 8) {
+ return 0;
+ }
+
+ if (gt_WARN_ONCE(engine->gt, !num,
+ "Platform does not implement TLB invalidation!"))
+ return -ENODEV;
+
+ if (gt_WARN_ON_ONCE(engine->gt,
+ class >= num ||
+ (!regs[class].reg.reg &&
+ !regs[class].mcr_reg.reg)))
+ return -ERANGE;
+
+ reg = regs[class];
+
+ if (regs == gen8_regs && class == VIDEO_DECODE_CLASS && instance == 1) {
+ reg.reg = GEN8_M2TCR;
+ val = 0;
+ } else {
+ val = instance;
+ }
+
+ val = BIT(val);
+
+ engine->tlb_inv.mcr = regs == xehp_regs;
+ engine->tlb_inv.reg = reg;
+ engine->tlb_inv.done = val;
+
+ if (GRAPHICS_VER(i915) >= 12 &&
+ (engine->class == VIDEO_DECODE_CLASS ||
+ engine->class == VIDEO_ENHANCEMENT_CLASS ||
+ engine->class == COMPUTE_CLASS))
+ engine->tlb_inv.request = _MASKED_BIT_ENABLE(val);
+ else
+ engine->tlb_inv.request = val;
+
+ return 0;
+}
+
static int engine_setup_common(struct intel_engine_cs *engine)
{
int err;
init_llist_head(&engine->barrier_tasks);
+ err = intel_engine_init_tlb_invalidation(engine);
+ if (err)
+ return err;
+
err = init_status_page(engine);
if (err)
return err;
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index 4fd54fb8810f..0a071e5da1a8 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -341,6 +341,18 @@ struct intel_engine_guc_stats {
u64 start_gt_clk;
};
+union intel_engine_tlb_inv_reg {
+ i915_reg_t reg;
+ i915_mcr_reg_t mcr_reg;
+};
+
+struct intel_engine_tlb_inv {
+ bool mcr;
+ union intel_engine_tlb_inv_reg reg;
+ u32 request;
+ u32 done;
+};
+
struct intel_engine_cs {
struct drm_i915_private *i915;
struct intel_gt *gt;
@@ -372,6 +384,8 @@ struct intel_engine_cs {
u32 context_size;
u32 mmio_base;
+ struct intel_engine_tlb_inv tlb_inv;
+
/*
* Some w/a require forcewake to be held (which prevents RC6) while
* a particular engine is active. If so, we set fw_domain to which
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index 001a7ec5b861..f7f271708fc7 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -982,35 +982,6 @@ void intel_gt_info_print(const struct intel_gt_info *info,
intel_sseu_dump(&info->sseu, p);
}
-struct reg_and_bit {
- union {
- i915_reg_t reg;
- i915_mcr_reg_t mcr_reg;
- };
- u32 bit;
-};
-
-static struct reg_and_bit
-get_reg_and_bit(const struct intel_engine_cs *engine, const bool gen8,
- const i915_reg_t *regs, const unsigned int num)
-{
- const unsigned int class = engine->class;
- struct reg_and_bit rb = { };
-
- if (gt_WARN_ON_ONCE(engine->gt, class >= num || !regs[class].reg))
- return rb;
-
- rb.reg = regs[class];
- if (gen8 && class == VIDEO_DECODE_CLASS)
- rb.reg.reg += 4 * engine->instance; /* GEN8_M2TCR */
- else
- rb.bit = engine->instance;
-
- rb.bit = BIT(rb.bit);
-
- return rb;
-}
-
/*
* HW architecture suggest typical invalidation time at 40us,
* with pessimistic cases up to 100us and a recommendation to
@@ -1024,14 +995,20 @@ get_reg_and_bit(const struct intel_engine_cs *engine, const bool gen8,
* but are now considered MCR registers. Since they exist within a GAM range,
* the primary instance of the register rolls up the status from each unit.
*/
-static int wait_for_invalidate(struct intel_gt *gt, struct reg_and_bit rb)
+static int wait_for_invalidate(struct intel_engine_cs *engine)
{
- if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 50))
- return intel_gt_mcr_wait_for_reg(gt, rb.mcr_reg, rb.bit, 0,
+ if (engine->tlb_inv.mcr)
+ return intel_gt_mcr_wait_for_reg(engine->gt,
+ engine->tlb_inv.reg.mcr_reg,
+ engine->tlb_inv.done,
+ 0,
TLB_INVAL_TIMEOUT_US,
TLB_INVAL_TIMEOUT_MS);
else
- return __intel_wait_for_register_fw(gt->uncore, rb.reg, rb.bit, 0,
+ return __intel_wait_for_register_fw(engine->gt->uncore,
+ engine->tlb_inv.reg.reg,
+ engine->tlb_inv.done,
+ 0,
TLB_INVAL_TIMEOUT_US,
TLB_INVAL_TIMEOUT_MS,
NULL);
@@ -1039,62 +1016,14 @@ static int wait_for_invalidate(struct intel_gt *gt, struct reg_and_bit rb)
static void mmio_invalidate_full(struct intel_gt *gt)
{
- static const i915_reg_t gen8_regs[] = {
- [RENDER_CLASS] = GEN8_RTCR,
- [VIDEO_DECODE_CLASS] = GEN8_M1TCR, /* , GEN8_M2TCR */
- [VIDEO_ENHANCEMENT_CLASS] = GEN8_VTCR,
- [COPY_ENGINE_CLASS] = GEN8_BTCR,
- };
- static const i915_reg_t gen12_regs[] = {
- [RENDER_CLASS] = GEN12_GFX_TLB_INV_CR,
- [VIDEO_DECODE_CLASS] = GEN12_VD_TLB_INV_CR,
- [VIDEO_ENHANCEMENT_CLASS] = GEN12_VE_TLB_INV_CR,
- [COPY_ENGINE_CLASS] = GEN12_BLT_TLB_INV_CR,
- [COMPUTE_CLASS] = GEN12_COMPCTX_TLB_INV_CR,
- };
- static const i915_mcr_reg_t xehp_regs[] = {
- [RENDER_CLASS] = XEHP_GFX_TLB_INV_CR,
- [VIDEO_DECODE_CLASS] = XEHP_VD_TLB_INV_CR,
- [VIDEO_ENHANCEMENT_CLASS] = XEHP_VE_TLB_INV_CR,
- [COPY_ENGINE_CLASS] = XEHP_BLT_TLB_INV_CR,
- [COMPUTE_CLASS] = XEHP_COMPCTX_TLB_INV_CR,
- };
struct drm_i915_private *i915 = gt->i915;
struct intel_uncore *uncore = gt->uncore;
struct intel_engine_cs *engine;
intel_engine_mask_t awake, tmp;
enum intel_engine_id id;
- const i915_reg_t *regs;
- unsigned int num = 0;
unsigned long flags;
- /*
- * New platforms should not be added with catch-all-newer (>=)
- * condition so that any later platform added triggers the below warning
- * and in turn mandates a human cross-check of whether the invalidation
- * flows have compatible semantics.
- *
- * For instance with the 11.00 -> 12.00 transition three out of five
- * respective engine registers were moved to masked type. Then after the
- * 12.00 -> 12.50 transition multi cast handling is required too.
- */
-
- if (GRAPHICS_VER_FULL(i915) == IP_VER(12, 50) ||
- GRAPHICS_VER_FULL(i915) == IP_VER(12, 55)) {
- regs = NULL;
- num = ARRAY_SIZE(xehp_regs);
- } else if (GRAPHICS_VER_FULL(i915) == IP_VER(12, 0) ||
- GRAPHICS_VER_FULL(i915) == IP_VER(12, 10)) {
- regs = gen12_regs;
- num = ARRAY_SIZE(gen12_regs);
- } else if (GRAPHICS_VER(i915) >= 8 && GRAPHICS_VER(i915) <= 11) {
- regs = gen8_regs;
- num = ARRAY_SIZE(gen8_regs);
- } else if (GRAPHICS_VER(i915) < 8) {
- return;
- }
-
- if (gt_WARN_ONCE(gt, !num, "Platform does not implement TLB invalidation!"))
+ if (GRAPHICS_VER(i915) < 8)
return;
intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
@@ -1104,33 +1033,18 @@ static void mmio_invalidate_full(struct intel_gt *gt)
awake = 0;
for_each_engine(engine, gt, id) {
- struct reg_and_bit rb;
-
if (!intel_engine_pm_is_awake(engine))
continue;
- if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) {
- u32 val = BIT(engine->instance);
-
- if (engine->class == VIDEO_DECODE_CLASS ||
- engine->class == VIDEO_ENHANCEMENT_CLASS ||
- engine->class == COMPUTE_CLASS)
- val = _MASKED_BIT_ENABLE(val);
+ if (engine->tlb_inv.mcr)
intel_gt_mcr_multicast_write_fw(gt,
- xehp_regs[engine->class],
- val);
- } else {
- rb = get_reg_and_bit(engine, regs == gen8_regs, regs, num);
- if (!i915_mmio_reg_offset(rb.reg))
- continue;
-
- if (GRAPHICS_VER(i915) == 12 && (engine->class == VIDEO_DECODE_CLASS ||
- engine->class == VIDEO_ENHANCEMENT_CLASS ||
- engine->class == COMPUTE_CLASS))
- rb.bit = _MASKED_BIT_ENABLE(rb.bit);
-
- intel_uncore_write_fw(uncore, rb.reg, rb.bit);
- }
+ engine->tlb_inv.reg.mcr_reg,
+ engine->tlb_inv.request);
+ else
+ intel_uncore_write_fw(uncore,
+ engine->tlb_inv.reg.reg,
+ engine->tlb_inv.request);
+
awake |= engine->mask;
}
@@ -1149,17 +1063,9 @@ static void mmio_invalidate_full(struct intel_gt *gt)
intel_gt_mcr_unlock(gt, flags);
for_each_engine_masked(engine, gt, awake, tmp) {
- struct reg_and_bit rb;
-
- if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) {
- rb.mcr_reg = xehp_regs[engine->class];
- rb.bit = BIT(engine->instance);
- } else {
- rb = get_reg_and_bit(engine, regs == gen8_regs, regs, num);
- }
-
- if (wait_for_invalidate(gt, rb))
- gt_err_ratelimited(gt, "%s TLB invalidation did not complete in %ums!\n",
+ if (wait_for_invalidate(engine))
+ gt_err_ratelimited(gt,
+ "%s TLB invalidation did not complete in %ums!\n",
engine->name, TLB_INVAL_TIMEOUT_MS);
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-05 17:41:27 +0300