intel_lrc.o \
intel_mocs.o \
intel_ringbuffer.o \
+ intel_sseu.o \
intel_uncore.o \
intel_wopcm.o
intel_psr.h \
intel_sdvo.h \
intel_sprite.h \
+ intel_sseu.h \
intel_tv.h \
intel_workarounds_types.h
return (struct intel_device_info *)INTEL_INFO(dev_priv);
}
-static inline struct intel_sseu
-intel_device_default_sseu(struct drm_i915_private *i915)
-{
- const struct sseu_dev_info *sseu = &RUNTIME_INFO(i915)->sseu;
- struct intel_sseu value = {
- .slice_mask = sseu->slice_mask,
- .subslice_mask = sseu->subslice_mask[0],
- .min_eus_per_subslice = sseu->max_eus_per_subslice,
- .max_eus_per_subslice = sseu->max_eus_per_subslice,
- };
-
- return value;
-}
-
/* modesetting */
extern void intel_modeset_init_hw(struct drm_device *dev);
extern int intel_modeset_init(struct drm_device *dev);
*cs++ = MI_STORE_DWORD_IMM_GEN4 | MI_USE_GGTT;
*cs++ = lower_32_bits(offset);
*cs++ = upper_32_bits(offset);
- *cs++ = gen8_make_rpcs(rq->i915, &sseu);
+ *cs++ = intel_sseu_make_rpcs(rq->i915, &sseu);
intel_ring_advance(rq, cs);
CTX_REG(reg_state,
CTX_R_PWR_CLK_STATE, GEN8_R_PWR_CLK_STATE,
- gen8_make_rpcs(i915, &ce->sseu));
+ intel_sseu_make_rpcs(i915, &ce->sseu));
}
/*
ce->gem_context = ctx;
ce->engine = engine;
ce->ops = engine->cops;
+ ce->sseu = engine->sseu;
INIT_LIST_HEAD(&ce->signal_link);
INIT_LIST_HEAD(&ce->signals);
mutex_init(&ce->pin_mutex);
- /* Use the whole device by default */
- ce->sseu = intel_device_default_sseu(ctx->i915);
-
i915_active_request_init(&ce->active_tracker,
NULL, intel_context_retire);
}
#include <linux/types.h>
#include "i915_active_types.h"
+#include "intel_sseu.h"
struct i915_gem_context;
struct i915_vma;
void (*destroy)(struct kref *kref);
};
-/*
- * Powergating configuration for a particular (context,engine).
- */
-struct intel_sseu {
- u8 slice_mask;
- u8 subslice_mask;
- u8 min_eus_per_subslice;
- u8 max_eus_per_subslice;
-};
-
struct intel_context {
struct kref ref;
#include "intel_engine_types.h"
#include "intel_display.h"
+#include "intel_sseu.h"
struct drm_printer;
struct drm_i915_private;
func(overlay_needs_physical); \
func(supports_tv);
-#define GEN_MAX_SLICES (6) /* CNL upper bound */
-#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
-
-struct sseu_dev_info {
- u8 slice_mask;
- u8 subslice_mask[GEN_MAX_SLICES];
- u16 eu_total;
- u8 eu_per_subslice;
- u8 min_eu_in_pool;
- /* For each slice, which subslice(s) has(have) 7 EUs (bitfield)? */
- u8 subslice_7eu[3];
- u8 has_slice_pg:1;
- u8 has_subslice_pg:1;
- u8 has_eu_pg:1;
-
- /* Topology fields */
- u8 max_slices;
- u8 max_subslices;
- u8 max_eus_per_subslice;
-
- /* We don't have more than 8 eus per subslice at the moment and as we
- * store eus enabled using bits, no need to multiply by eus per
- * subslice.
- */
- u8 eu_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICES];
-};
-
struct intel_device_info {
u16 gen_mask;
intel_engine_init_batch_pool(engine);
intel_engine_init_cmd_parser(engine);
+ /* Use the whole device by default */
+ engine->sseu =
+ intel_sseu_from_device_info(&RUNTIME_INFO(engine->i915)->sseu);
+
return 0;
err_hwsp:
#include "i915_priolist_types.h"
#include "i915_selftest.h"
#include "i915_timeline_types.h"
+#include "intel_sseu.h"
#include "intel_workarounds_types.h"
#include "i915_gem_batch_pool.h"
u32 context_size;
u32 mmio_base;
+ struct intel_sseu sseu;
+
struct intel_ring *buffer;
struct i915_timeline timeline;
/* RPCS */
if (engine->class == RENDER_CLASS)
regs[CTX_R_PWR_CLK_STATE + 1] =
- gen8_make_rpcs(engine->i915, &ce->sseu);
+ intel_sseu_make_rpcs(engine->i915, &ce->sseu);
}
static int
return logical_ring_init(engine);
}
-u32 gen8_make_rpcs(struct drm_i915_private *i915, struct intel_sseu *req_sseu)
-{
- const struct sseu_dev_info *sseu = &RUNTIME_INFO(i915)->sseu;
- bool subslice_pg = sseu->has_subslice_pg;
- struct intel_sseu ctx_sseu;
- u8 slices, subslices;
- u32 rpcs = 0;
-
- /*
- * No explicit RPCS request is needed to ensure full
- * slice/subslice/EU enablement prior to Gen9.
- */
- if (INTEL_GEN(i915) < 9)
- return 0;
-
- /*
- * If i915/perf is active, we want a stable powergating configuration
- * on the system.
- *
- * We could choose full enablement, but on ICL we know there are use
- * cases which disable slices for functional, apart for performance
- * reasons. So in this case we select a known stable subset.
- */
- if (!i915->perf.oa.exclusive_stream) {
- ctx_sseu = *req_sseu;
- } else {
- ctx_sseu = intel_device_default_sseu(i915);
-
- if (IS_GEN(i915, 11)) {
- /*
- * We only need subslice count so it doesn't matter
- * which ones we select - just turn off low bits in the
- * amount of half of all available subslices per slice.
- */
- ctx_sseu.subslice_mask =
- ~(~0 << (hweight8(ctx_sseu.subslice_mask) / 2));
- ctx_sseu.slice_mask = 0x1;
- }
- }
-
- slices = hweight8(ctx_sseu.slice_mask);
- subslices = hweight8(ctx_sseu.subslice_mask);
-
- /*
- * Since the SScount bitfield in GEN8_R_PWR_CLK_STATE is only three bits
- * wide and Icelake has up to eight subslices, specfial programming is
- * needed in order to correctly enable all subslices.
- *
- * According to documentation software must consider the configuration
- * as 2x4x8 and hardware will translate this to 1x8x8.
- *
- * Furthemore, even though SScount is three bits, maximum documented
- * value for it is four. From this some rules/restrictions follow:
- *
- * 1.
- * If enabled subslice count is greater than four, two whole slices must
- * be enabled instead.
- *
- * 2.
- * When more than one slice is enabled, hardware ignores the subslice
- * count altogether.
- *
- * From these restrictions it follows that it is not possible to enable
- * a count of subslices between the SScount maximum of four restriction,
- * and the maximum available number on a particular SKU. Either all
- * subslices are enabled, or a count between one and four on the first
- * slice.
- */
- if (IS_GEN(i915, 11) &&
- slices == 1 &&
- subslices > min_t(u8, 4, hweight8(sseu->subslice_mask[0]) / 2)) {
- GEM_BUG_ON(subslices & 1);
-
- subslice_pg = false;
- slices *= 2;
- }
-
- /*
- * Starting in Gen9, render power gating can leave
- * slice/subslice/EU in a partially enabled state. We
- * must make an explicit request through RPCS for full
- * enablement.
- */
- if (sseu->has_slice_pg) {
- u32 mask, val = slices;
-
- if (INTEL_GEN(i915) >= 11) {
- mask = GEN11_RPCS_S_CNT_MASK;
- val <<= GEN11_RPCS_S_CNT_SHIFT;
- } else {
- mask = GEN8_RPCS_S_CNT_MASK;
- val <<= GEN8_RPCS_S_CNT_SHIFT;
- }
-
- GEM_BUG_ON(val & ~mask);
- val &= mask;
-
- rpcs |= GEN8_RPCS_ENABLE | GEN8_RPCS_S_CNT_ENABLE | val;
- }
-
- if (subslice_pg) {
- u32 val = subslices;
-
- val <<= GEN8_RPCS_SS_CNT_SHIFT;
-
- GEM_BUG_ON(val & ~GEN8_RPCS_SS_CNT_MASK);
- val &= GEN8_RPCS_SS_CNT_MASK;
-
- rpcs |= GEN8_RPCS_ENABLE | GEN8_RPCS_SS_CNT_ENABLE | val;
- }
-
- if (sseu->has_eu_pg) {
- u32 val;
-
- val = ctx_sseu.min_eus_per_subslice << GEN8_RPCS_EU_MIN_SHIFT;
- GEM_BUG_ON(val & ~GEN8_RPCS_EU_MIN_MASK);
- val &= GEN8_RPCS_EU_MIN_MASK;
-
- rpcs |= val;
-
- val = ctx_sseu.max_eus_per_subslice << GEN8_RPCS_EU_MAX_SHIFT;
- GEM_BUG_ON(val & ~GEN8_RPCS_EU_MAX_MASK);
- val &= GEN8_RPCS_EU_MAX_MASK;
-
- rpcs |= val;
-
- rpcs |= GEN8_RPCS_ENABLE;
- }
-
- return rpcs;
-}
-
static u32 intel_lr_indirect_ctx_offset(struct intel_engine_cs *engine)
{
u32 indirect_ctx_offset;
const char *prefix),
unsigned int max);
-u32 gen8_make_rpcs(struct drm_i915_private *i915, struct intel_sseu *ctx_sseu);
-
#endif /* _INTEL_LRC_H_ */
--- /dev/null
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "intel_lrc_reg.h"
+#include "intel_sseu.h"
+
+u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
+ const struct intel_sseu *req_sseu)
+{
+ const struct sseu_dev_info *sseu = &RUNTIME_INFO(i915)->sseu;
+ bool subslice_pg = sseu->has_subslice_pg;
+ struct intel_sseu ctx_sseu;
+ u8 slices, subslices;
+ u32 rpcs = 0;
+
+ /*
+ * No explicit RPCS request is needed to ensure full
+ * slice/subslice/EU enablement prior to Gen9.
+ */
+ if (INTEL_GEN(i915) < 9)
+ return 0;
+
+ /*
+ * If i915/perf is active, we want a stable powergating configuration
+ * on the system.
+ *
+ * We could choose full enablement, but on ICL we know there are use
+ * cases which disable slices for functional, apart for performance
+ * reasons. So in this case we select a known stable subset.
+ */
+ if (!i915->perf.oa.exclusive_stream) {
+ ctx_sseu = *req_sseu;
+ } else {
+ ctx_sseu = intel_sseu_from_device_info(sseu);
+
+ if (IS_GEN(i915, 11)) {
+ /*
+ * We only need subslice count so it doesn't matter
+ * which ones we select - just turn off low bits in the
+ * amount of half of all available subslices per slice.
+ */
+ ctx_sseu.subslice_mask =
+ ~(~0 << (hweight8(ctx_sseu.subslice_mask) / 2));
+ ctx_sseu.slice_mask = 0x1;
+ }
+ }
+
+ slices = hweight8(ctx_sseu.slice_mask);
+ subslices = hweight8(ctx_sseu.subslice_mask);
+
+ /*
+ * Since the SScount bitfield in GEN8_R_PWR_CLK_STATE is only three bits
+ * wide and Icelake has up to eight subslices, specfial programming is
+ * needed in order to correctly enable all subslices.
+ *
+ * According to documentation software must consider the configuration
+ * as 2x4x8 and hardware will translate this to 1x8x8.
+ *
+ * Furthemore, even though SScount is three bits, maximum documented
+ * value for it is four. From this some rules/restrictions follow:
+ *
+ * 1.
+ * If enabled subslice count is greater than four, two whole slices must
+ * be enabled instead.
+ *
+ * 2.
+ * When more than one slice is enabled, hardware ignores the subslice
+ * count altogether.
+ *
+ * From these restrictions it follows that it is not possible to enable
+ * a count of subslices between the SScount maximum of four restriction,
+ * and the maximum available number on a particular SKU. Either all
+ * subslices are enabled, or a count between one and four on the first
+ * slice.
+ */
+ if (IS_GEN(i915, 11) &&
+ slices == 1 &&
+ subslices > min_t(u8, 4, hweight8(sseu->subslice_mask[0]) / 2)) {
+ GEM_BUG_ON(subslices & 1);
+
+ subslice_pg = false;
+ slices *= 2;
+ }
+
+ /*
+ * Starting in Gen9, render power gating can leave
+ * slice/subslice/EU in a partially enabled state. We
+ * must make an explicit request through RPCS for full
+ * enablement.
+ */
+ if (sseu->has_slice_pg) {
+ u32 mask, val = slices;
+
+ if (INTEL_GEN(i915) >= 11) {
+ mask = GEN11_RPCS_S_CNT_MASK;
+ val <<= GEN11_RPCS_S_CNT_SHIFT;
+ } else {
+ mask = GEN8_RPCS_S_CNT_MASK;
+ val <<= GEN8_RPCS_S_CNT_SHIFT;
+ }
+
+ GEM_BUG_ON(val & ~mask);
+ val &= mask;
+
+ rpcs |= GEN8_RPCS_ENABLE | GEN8_RPCS_S_CNT_ENABLE | val;
+ }
+
+ if (subslice_pg) {
+ u32 val = subslices;
+
+ val <<= GEN8_RPCS_SS_CNT_SHIFT;
+
+ GEM_BUG_ON(val & ~GEN8_RPCS_SS_CNT_MASK);
+ val &= GEN8_RPCS_SS_CNT_MASK;
+
+ rpcs |= GEN8_RPCS_ENABLE | GEN8_RPCS_SS_CNT_ENABLE | val;
+ }
+
+ if (sseu->has_eu_pg) {
+ u32 val;
+
+ val = ctx_sseu.min_eus_per_subslice << GEN8_RPCS_EU_MIN_SHIFT;
+ GEM_BUG_ON(val & ~GEN8_RPCS_EU_MIN_MASK);
+ val &= GEN8_RPCS_EU_MIN_MASK;
+
+ rpcs |= val;
+
+ val = ctx_sseu.max_eus_per_subslice << GEN8_RPCS_EU_MAX_SHIFT;
+ GEM_BUG_ON(val & ~GEN8_RPCS_EU_MAX_MASK);
+ val &= GEN8_RPCS_EU_MAX_MASK;
+
+ rpcs |= val;
+
+ rpcs |= GEN8_RPCS_ENABLE;
+ }
+
+ return rpcs;
+}
--- /dev/null
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_SSEU_H__
+#define __INTEL_SSEU_H__
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+
+#define GEN_MAX_SLICES (6) /* CNL upper bound */
+#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
+
+struct sseu_dev_info {
+ u8 slice_mask;
+ u8 subslice_mask[GEN_MAX_SLICES];
+ u16 eu_total;
+ u8 eu_per_subslice;
+ u8 min_eu_in_pool;
+ /* For each slice, which subslice(s) has(have) 7 EUs (bitfield)? */
+ u8 subslice_7eu[3];
+ u8 has_slice_pg:1;
+ u8 has_subslice_pg:1;
+ u8 has_eu_pg:1;
+
+ /* Topology fields */
+ u8 max_slices;
+ u8 max_subslices;
+ u8 max_eus_per_subslice;
+
+ /* We don't have more than 8 eus per subslice at the moment and as we
+ * store eus enabled using bits, no need to multiply by eus per
+ * subslice.
+ */
+ u8 eu_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICES];
+};
+
+/*
+ * Powergating configuration for a particular (context,engine).
+ */
+struct intel_sseu {
+ u8 slice_mask;
+ u8 subslice_mask;
+ u8 min_eus_per_subslice;
+ u8 max_eus_per_subslice;
+};
+
+static inline struct intel_sseu
+intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
+{
+ struct intel_sseu value = {
+ .slice_mask = sseu->slice_mask,
+ .subslice_mask = sseu->subslice_mask[0],
+ .min_eus_per_subslice = sseu->max_eus_per_subslice,
+ .max_eus_per_subslice = sseu->max_eus_per_subslice,
+ };
+
+ return value;
+}
+
+u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
+ const struct intel_sseu *req_sseu);
+
+#endif /* __INTEL_SSEU_H__ */
unsigned int expected,
struct igt_spinner *spin)
{
- unsigned int slices =
- hweight32(intel_device_default_sseu(i915).slice_mask);
+ unsigned int slices = hweight32(engine->sseu.slice_mask);
u32 rpcs = 0;
int ret = 0;
const char *name,
unsigned int flags)
{
- struct intel_sseu default_sseu = intel_device_default_sseu(i915);
struct intel_engine_cs *engine = i915->engine[RCS0];
+ struct intel_sseu default_sseu = engine->sseu;
struct drm_i915_gem_object *obj;
struct i915_gem_context *ctx;
struct intel_sseu pg_sseu;
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