From: Matthew Brost <matthew.brost@intel.com>
To: <intel-gfx@lists.freedesktop.org>, <dri-devel@lists.freedesktop.org>
Cc: <daniel.vetter@ffwll.ch>, <tony.ye@intel.com>, <zhengguo.xu@intel.com>
Subject: [PATCH 20/27] drm/i915/guc: Connect UAPI to GuC multi-lrc interface
Date: Fri, 20 Aug 2021 15:44:39 -0700 [thread overview]
Message-ID: <20210820224446.30620-21-matthew.brost@intel.com> (raw)
In-Reply-To: <20210820224446.30620-1-matthew.brost@intel.com>
Introduce 'set parallel submit' extension to connect UAPI to GuC
multi-lrc interface. Kernel doc in new uAPI should explain it all.
IGT: https://patchwork.freedesktop.org/patch/447008/?series=93071&rev=1
media UMD: link to come
v2:
(Daniel Vetter)
- Add IGT link and placeholder for media UMD link
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 220 +++++++++++++++++-
.../gpu/drm/i915/gem/i915_gem_context_types.h | 6 +
drivers/gpu/drm/i915/gt/intel_context_types.h | 9 +-
drivers/gpu/drm/i915/gt/intel_engine.h | 12 +-
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 6 +-
.../drm/i915/gt/intel_execlists_submission.c | 6 +-
drivers/gpu/drm/i915/gt/selftest_execlists.c | 12 +-
.../gpu/drm/i915/gt/uc/intel_guc_submission.c | 114 ++++++++-
include/uapi/drm/i915_drm.h | 128 ++++++++++
9 files changed, 485 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index bcaaf514876b..de0fd145fb47 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -522,9 +522,149 @@ set_proto_ctx_engines_bond(struct i915_user_extension __user *base, void *data)
return 0;
}
+static int
+set_proto_ctx_engines_parallel_submit(struct i915_user_extension __user *base,
+ void *data)
+{
+ struct i915_context_engines_parallel_submit __user *ext =
+ container_of_user(base, typeof(*ext), base);
+ const struct set_proto_ctx_engines *set = data;
+ struct drm_i915_private *i915 = set->i915;
+ u64 flags;
+ int err = 0, n, i, j;
+ u16 slot, width, num_siblings;
+ struct intel_engine_cs **siblings = NULL;
+ intel_engine_mask_t prev_mask;
+
+ /* Disabling for now */
+ return -ENODEV;
+
+ if (!(intel_uc_uses_guc_submission(&i915->gt.uc)))
+ return -ENODEV;
+
+ if (get_user(slot, &ext->engine_index))
+ return -EFAULT;
+
+ if (get_user(width, &ext->width))
+ return -EFAULT;
+
+ if (get_user(num_siblings, &ext->num_siblings))
+ return -EFAULT;
+
+ if (slot >= set->num_engines) {
+ drm_dbg(&i915->drm, "Invalid placement value, %d >= %d\n",
+ slot, set->num_engines);
+ return -EINVAL;
+ }
+
+ if (set->engines[slot].type != I915_GEM_ENGINE_TYPE_INVALID) {
+ drm_dbg(&i915->drm,
+ "Invalid placement[%d], already occupied\n", slot);
+ return -EINVAL;
+ }
+
+ if (get_user(flags, &ext->flags))
+ return -EFAULT;
+
+ if (flags) {
+ drm_dbg(&i915->drm, "Unknown flags 0x%02llx", flags);
+ return -EINVAL;
+ }
+
+ for (n = 0; n < ARRAY_SIZE(ext->mbz64); n++) {
+ err = check_user_mbz(&ext->mbz64[n]);
+ if (err)
+ return err;
+ }
+
+ if (width < 2) {
+ drm_dbg(&i915->drm, "Width (%d) < 2\n", width);
+ return -EINVAL;
+ }
+
+ if (num_siblings < 1) {
+ drm_dbg(&i915->drm, "Number siblings (%d) < 1\n",
+ num_siblings);
+ return -EINVAL;
+ }
+
+ siblings = kmalloc_array(num_siblings * width,
+ sizeof(*siblings),
+ GFP_KERNEL);
+ if (!siblings)
+ return -ENOMEM;
+
+ /* Create contexts / engines */
+ for (i = 0; i < width; ++i) {
+ intel_engine_mask_t current_mask = 0;
+ struct i915_engine_class_instance prev_engine;
+
+ for (j = 0; j < num_siblings; ++j) {
+ struct i915_engine_class_instance ci;
+
+ n = i * num_siblings + j;
+ if (copy_from_user(&ci, &ext->engines[n], sizeof(ci))) {
+ err = -EFAULT;
+ goto out_err;
+ }
+
+ siblings[n] =
+ intel_engine_lookup_user(i915, ci.engine_class,
+ ci.engine_instance);
+ if (!siblings[n]) {
+ drm_dbg(&i915->drm,
+ "Invalid sibling[%d]: { class:%d, inst:%d }\n",
+ n, ci.engine_class, ci.engine_instance);
+ err = -EINVAL;
+ goto out_err;
+ }
+
+ if (n) {
+ if (prev_engine.engine_class !=
+ ci.engine_class) {
+ drm_dbg(&i915->drm,
+ "Mismatched class %d, %d\n",
+ prev_engine.engine_class,
+ ci.engine_class);
+ err = -EINVAL;
+ goto out_err;
+ }
+ }
+
+ prev_engine = ci;
+ current_mask |= siblings[n]->logical_mask;
+ }
+
+ if (i > 0) {
+ if (current_mask != prev_mask << 1) {
+ drm_dbg(&i915->drm,
+ "Non contiguous logical mask 0x%x, 0x%x\n",
+ prev_mask, current_mask);
+ err = -EINVAL;
+ goto out_err;
+ }
+ }
+ prev_mask = current_mask;
+ }
+
+ set->engines[slot].type = I915_GEM_ENGINE_TYPE_PARALLEL;
+ set->engines[slot].num_siblings = num_siblings;
+ set->engines[slot].width = width;
+ set->engines[slot].siblings = siblings;
+
+ return 0;
+
+out_err:
+ kfree(siblings);
+
+ return err;
+}
+
static const i915_user_extension_fn set_proto_ctx_engines_extensions[] = {
[I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE] = set_proto_ctx_engines_balance,
[I915_CONTEXT_ENGINES_EXT_BOND] = set_proto_ctx_engines_bond,
+ [I915_CONTEXT_ENGINES_EXT_PARALLEL_SUBMIT] =
+ set_proto_ctx_engines_parallel_submit,
};
static int set_proto_ctx_engines(struct drm_i915_file_private *fpriv,
@@ -821,6 +961,25 @@ static int intel_context_set_gem(struct intel_context *ce,
return ret;
}
+static void __unpin_engines(struct i915_gem_engines *e, unsigned int count)
+{
+ while (count--) {
+ struct intel_context *ce = e->engines[count], *child;
+
+ if (!ce || !test_bit(CONTEXT_PERMA_PIN, &ce->flags))
+ continue;
+
+ for_each_child(ce, child)
+ intel_context_unpin(child);
+ intel_context_unpin(ce);
+ }
+}
+
+static void unpin_engines(struct i915_gem_engines *e)
+{
+ __unpin_engines(e, e->num_engines);
+}
+
static void __free_engines(struct i915_gem_engines *e, unsigned int count)
{
while (count--) {
@@ -936,6 +1095,40 @@ static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx,
return err;
}
+static int perma_pin_contexts(struct intel_context *ce)
+{
+ struct intel_context *child;
+ int i = 0, j = 0, ret;
+
+ GEM_BUG_ON(!intel_context_is_parent(ce));
+
+ ret = intel_context_pin(ce);
+ if (unlikely(ret))
+ return ret;
+
+ for_each_child(ce, child) {
+ ret = intel_context_pin(child);
+ if (unlikely(ret))
+ goto unwind;
+ ++i;
+ }
+
+ set_bit(CONTEXT_PERMA_PIN, &ce->flags);
+
+ return 0;
+
+unwind:
+ intel_context_unpin(ce);
+ for_each_child(ce, child) {
+ if (j++ < i)
+ intel_context_unpin(child);
+ else
+ break;
+ }
+
+ return ret;
+}
+
static struct i915_gem_engines *user_engines(struct i915_gem_context *ctx,
unsigned int num_engines,
struct i915_gem_proto_engine *pe)
@@ -946,7 +1139,7 @@ static struct i915_gem_engines *user_engines(struct i915_gem_context *ctx,
e = alloc_engines(num_engines);
e->num_engines = num_engines;
for (n = 0; n < num_engines; n++) {
- struct intel_context *ce;
+ struct intel_context *ce, *child;
int ret;
switch (pe[n].type) {
@@ -956,7 +1149,13 @@ static struct i915_gem_engines *user_engines(struct i915_gem_context *ctx,
case I915_GEM_ENGINE_TYPE_BALANCED:
ce = intel_engine_create_virtual(pe[n].siblings,
- pe[n].num_siblings);
+ pe[n].num_siblings, 0);
+ break;
+
+ case I915_GEM_ENGINE_TYPE_PARALLEL:
+ ce = intel_engine_create_parallel(pe[n].siblings,
+ pe[n].num_siblings,
+ pe[n].width);
break;
case I915_GEM_ENGINE_TYPE_INVALID:
@@ -977,6 +1176,22 @@ static struct i915_gem_engines *user_engines(struct i915_gem_context *ctx,
err = ERR_PTR(ret);
goto free_engines;
}
+ for_each_child(ce, child) {
+ ret = intel_context_set_gem(child, ctx, pe->sseu);
+ if (ret) {
+ err = ERR_PTR(ret);
+ goto free_engines;
+ }
+ }
+
+ /* XXX: Must be done after setting gem context */
+ if (pe[n].type == I915_GEM_ENGINE_TYPE_PARALLEL) {
+ ret = perma_pin_contexts(ce);
+ if (ret) {
+ err = ERR_PTR(ret);
+ goto free_engines;
+ }
+ }
}
return e;
@@ -1200,6 +1415,7 @@ static void context_close(struct i915_gem_context *ctx)
/* Flush any concurrent set_engines() */
mutex_lock(&ctx->engines_mutex);
+ unpin_engines(ctx->engines);
engines_idle_release(ctx, rcu_replace_pointer(ctx->engines, NULL, 1));
i915_gem_context_set_closed(ctx);
mutex_unlock(&ctx->engines_mutex);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
index 94c03a97cb77..7b096d83bca1 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
@@ -78,6 +78,9 @@ enum i915_gem_engine_type {
/** @I915_GEM_ENGINE_TYPE_BALANCED: A load-balanced engine set */
I915_GEM_ENGINE_TYPE_BALANCED,
+
+ /** @I915_GEM_ENGINE_TYPE_PARALLEL: A parallel engine set */
+ I915_GEM_ENGINE_TYPE_PARALLEL,
};
/**
@@ -108,6 +111,9 @@ struct i915_gem_proto_engine {
/** @num_siblings: Number of balanced siblings */
unsigned int num_siblings;
+ /** @width: Width of each sibling */
+ unsigned int width;
+
/** @siblings: Balanced siblings */
struct intel_engine_cs **siblings;
diff --git a/drivers/gpu/drm/i915/gt/intel_context_types.h b/drivers/gpu/drm/i915/gt/intel_context_types.h
index a63329520c35..713d85b0b364 100644
--- a/drivers/gpu/drm/i915/gt/intel_context_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_context_types.h
@@ -55,9 +55,13 @@ struct intel_context_ops {
void (*reset)(struct intel_context *ce);
void (*destroy)(struct kref *kref);
- /* virtual engine/context interface */
+ /* virtual/parallel engine/context interface */
struct intel_context *(*create_virtual)(struct intel_engine_cs **engine,
- unsigned int count);
+ unsigned int count,
+ unsigned long flags);
+ struct intel_context *(*create_parallel)(struct intel_engine_cs **engines,
+ unsigned int num_siblings,
+ unsigned int width);
struct intel_engine_cs *(*get_sibling)(struct intel_engine_cs *engine,
unsigned int sibling);
};
@@ -113,6 +117,7 @@ struct intel_context {
#define CONTEXT_NOPREEMPT 8
#define CONTEXT_LRCA_DIRTY 9
#define CONTEXT_GUC_INIT 10
+#define CONTEXT_PERMA_PIN 11
struct {
u64 timeout_us;
diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h b/drivers/gpu/drm/i915/gt/intel_engine.h
index 87579affb952..43f16a8347ee 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine.h
@@ -279,9 +279,19 @@ intel_engine_has_preempt_reset(const struct intel_engine_cs *engine)
return intel_engine_has_preemption(engine);
}
+#define FORCE_VIRTUAL BIT(0)
struct intel_context *
intel_engine_create_virtual(struct intel_engine_cs **siblings,
- unsigned int count);
+ unsigned int count, unsigned long flags);
+
+static inline struct intel_context *
+intel_engine_create_parallel(struct intel_engine_cs **engines,
+ unsigned int num_engines,
+ unsigned int width)
+{
+ GEM_BUG_ON(!engines[0]->cops->create_parallel);
+ return engines[0]->cops->create_parallel(engines, num_engines, width);
+}
static inline bool
intel_virtual_engine_has_heartbeat(const struct intel_engine_cs *engine)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index 4d790f9a65dd..f66c75c77584 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -1923,16 +1923,16 @@ ktime_t intel_engine_get_busy_time(struct intel_engine_cs *engine, ktime_t *now)
struct intel_context *
intel_engine_create_virtual(struct intel_engine_cs **siblings,
- unsigned int count)
+ unsigned int count, unsigned long flags)
{
if (count == 0)
return ERR_PTR(-EINVAL);
- if (count == 1)
+ if (count == 1 && !(flags & FORCE_VIRTUAL))
return intel_context_create(siblings[0]);
GEM_BUG_ON(!siblings[0]->cops->create_virtual);
- return siblings[0]->cops->create_virtual(siblings, count);
+ return siblings[0]->cops->create_virtual(siblings, count, flags);
}
struct i915_request *
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index 813a6de01382..d1e2d6f8ff81 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -201,7 +201,8 @@ static struct virtual_engine *to_virtual_engine(struct intel_engine_cs *engine)
}
static struct intel_context *
-execlists_create_virtual(struct intel_engine_cs **siblings, unsigned int count);
+execlists_create_virtual(struct intel_engine_cs **siblings, unsigned int count,
+ unsigned long flags);
static struct i915_request *
__active_request(const struct intel_timeline * const tl,
@@ -3782,7 +3783,8 @@ static void virtual_submit_request(struct i915_request *rq)
}
static struct intel_context *
-execlists_create_virtual(struct intel_engine_cs **siblings, unsigned int count)
+execlists_create_virtual(struct intel_engine_cs **siblings, unsigned int count,
+ unsigned long flags)
{
struct virtual_engine *ve;
unsigned int n;
diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c
index f12ffe797639..e876a9d88a5c 100644
--- a/drivers/gpu/drm/i915/gt/selftest_execlists.c
+++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c
@@ -3733,7 +3733,7 @@ static int nop_virtual_engine(struct intel_gt *gt,
GEM_BUG_ON(!nctx || nctx > ARRAY_SIZE(ve));
for (n = 0; n < nctx; n++) {
- ve[n] = intel_engine_create_virtual(siblings, nsibling);
+ ve[n] = intel_engine_create_virtual(siblings, nsibling, 0);
if (IS_ERR(ve[n])) {
err = PTR_ERR(ve[n]);
nctx = n;
@@ -3929,7 +3929,7 @@ static int mask_virtual_engine(struct intel_gt *gt,
* restrict it to our desired engine within the virtual engine.
*/
- ve = intel_engine_create_virtual(siblings, nsibling);
+ ve = intel_engine_create_virtual(siblings, nsibling, 0);
if (IS_ERR(ve)) {
err = PTR_ERR(ve);
goto out_close;
@@ -4060,7 +4060,7 @@ static int slicein_virtual_engine(struct intel_gt *gt,
i915_request_add(rq);
}
- ce = intel_engine_create_virtual(siblings, nsibling);
+ ce = intel_engine_create_virtual(siblings, nsibling, 0);
if (IS_ERR(ce)) {
err = PTR_ERR(ce);
goto out;
@@ -4112,7 +4112,7 @@ static int sliceout_virtual_engine(struct intel_gt *gt,
/* XXX We do not handle oversubscription and fairness with normal rq */
for (n = 0; n < nsibling; n++) {
- ce = intel_engine_create_virtual(siblings, nsibling);
+ ce = intel_engine_create_virtual(siblings, nsibling, 0);
if (IS_ERR(ce)) {
err = PTR_ERR(ce);
goto out;
@@ -4214,7 +4214,7 @@ static int preserved_virtual_engine(struct intel_gt *gt,
if (err)
goto out_scratch;
- ve = intel_engine_create_virtual(siblings, nsibling);
+ ve = intel_engine_create_virtual(siblings, nsibling, 0);
if (IS_ERR(ve)) {
err = PTR_ERR(ve);
goto out_scratch;
@@ -4354,7 +4354,7 @@ static int reset_virtual_engine(struct intel_gt *gt,
if (igt_spinner_init(&spin, gt))
return -ENOMEM;
- ve = intel_engine_create_virtual(siblings, nsibling);
+ ve = intel_engine_create_virtual(siblings, nsibling, 0);
if (IS_ERR(ve)) {
err = PTR_ERR(ve);
goto out_spin;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 07eee9a399c8..2554d0eb4afd 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -121,7 +121,13 @@ struct guc_virtual_engine {
};
static struct intel_context *
-guc_create_virtual(struct intel_engine_cs **siblings, unsigned int count);
+guc_create_virtual(struct intel_engine_cs **siblings, unsigned int count,
+ unsigned long flags);
+
+static struct intel_context *
+guc_create_parallel(struct intel_engine_cs **engines,
+ unsigned int num_siblings,
+ unsigned int width);
#define GUC_REQUEST_SIZE 64 /* bytes */
@@ -2581,6 +2587,7 @@ static const struct intel_context_ops guc_context_ops = {
.destroy = guc_context_destroy,
.create_virtual = guc_create_virtual,
+ .create_parallel = guc_create_parallel,
};
static void submit_work_cb(struct irq_work *wrk)
@@ -2827,8 +2834,6 @@ static const struct intel_context_ops virtual_guc_context_ops = {
.get_sibling = guc_virtual_get_sibling,
};
-/* Future patches will use this function */
-__maybe_unused
static int guc_parent_context_pin(struct intel_context *ce, void *vaddr)
{
struct intel_engine_cs *engine = guc_virtual_get_sibling(ce->engine, 0);
@@ -2845,8 +2850,6 @@ static int guc_parent_context_pin(struct intel_context *ce, void *vaddr)
return __guc_context_pin(ce, engine, vaddr);
}
-/* Future patches will use this function */
-__maybe_unused
static int guc_child_context_pin(struct intel_context *ce, void *vaddr)
{
struct intel_engine_cs *engine = guc_virtual_get_sibling(ce->engine, 0);
@@ -2858,8 +2861,6 @@ static int guc_child_context_pin(struct intel_context *ce, void *vaddr)
return __guc_context_pin(ce, engine, vaddr);
}
-/* Future patches will use this function */
-__maybe_unused
static void guc_parent_context_unpin(struct intel_context *ce)
{
struct intel_guc *guc = ce_to_guc(ce);
@@ -2875,8 +2876,6 @@ static void guc_parent_context_unpin(struct intel_context *ce)
lrc_unpin(ce);
}
-/* Future patches will use this function */
-__maybe_unused
static void guc_child_context_unpin(struct intel_context *ce)
{
GEM_BUG_ON(context_enabled(ce));
@@ -2887,8 +2886,6 @@ static void guc_child_context_unpin(struct intel_context *ce)
lrc_unpin(ce);
}
-/* Future patches will use this function */
-__maybe_unused
static void guc_child_context_post_unpin(struct intel_context *ce)
{
GEM_BUG_ON(!intel_context_is_child(ce));
@@ -2899,6 +2896,98 @@ static void guc_child_context_post_unpin(struct intel_context *ce)
intel_context_unpin(ce->parent);
}
+static void guc_child_context_destroy(struct kref *kref)
+{
+ struct intel_context *ce = container_of(kref, typeof(*ce), ref);
+
+ __guc_context_destroy(ce);
+}
+
+static const struct intel_context_ops virtual_parent_context_ops = {
+ .alloc = guc_virtual_context_alloc,
+
+ .pre_pin = guc_context_pre_pin,
+ .pin = guc_parent_context_pin,
+ .unpin = guc_parent_context_unpin,
+ .post_unpin = guc_context_post_unpin,
+
+ .ban = guc_context_ban,
+
+ .cancel_request = guc_context_cancel_request,
+
+ .enter = guc_virtual_context_enter,
+ .exit = guc_virtual_context_exit,
+
+ .sched_disable = guc_context_sched_disable,
+
+ .destroy = guc_context_destroy,
+
+ .get_sibling = guc_virtual_get_sibling,
+};
+
+static const struct intel_context_ops virtual_child_context_ops = {
+ .alloc = guc_virtual_context_alloc,
+
+ .pre_pin = guc_context_pre_pin,
+ .pin = guc_child_context_pin,
+ .unpin = guc_child_context_unpin,
+ .post_unpin = guc_child_context_post_unpin,
+
+ .cancel_request = guc_context_cancel_request,
+
+ .enter = guc_virtual_context_enter,
+ .exit = guc_virtual_context_exit,
+
+ .destroy = guc_child_context_destroy,
+
+ .get_sibling = guc_virtual_get_sibling,
+};
+
+static struct intel_context *
+guc_create_parallel(struct intel_engine_cs **engines,
+ unsigned int num_siblings,
+ unsigned int width)
+{
+ struct intel_engine_cs **siblings = NULL;
+ struct intel_context *parent = NULL, *ce, *err;
+ int i, j;
+
+ siblings = kmalloc_array(num_siblings,
+ sizeof(*siblings),
+ GFP_KERNEL);
+ if (!siblings)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < width; ++i) {
+ for (j = 0; j < num_siblings; ++j)
+ siblings[j] = engines[i * num_siblings + j];
+
+ ce = intel_engine_create_virtual(siblings, num_siblings,
+ FORCE_VIRTUAL);
+ if (!ce) {
+ err = ERR_PTR(-ENOMEM);
+ goto unwind;
+ }
+
+ if (i == 0) {
+ parent = ce;
+ parent->ops = &virtual_parent_context_ops;
+ } else {
+ ce->ops = &virtual_child_context_ops;
+ intel_context_bind_parent_child(parent, ce);
+ }
+ }
+
+ kfree(siblings);
+ return parent;
+
+unwind:
+ if (parent)
+ intel_context_put(parent);
+ kfree(siblings);
+ return err;
+}
+
static bool
guc_irq_enable_breadcrumbs(struct intel_breadcrumbs *b)
{
@@ -3726,7 +3815,8 @@ void intel_guc_submission_print_context_info(struct intel_guc *guc,
}
static struct intel_context *
-guc_create_virtual(struct intel_engine_cs **siblings, unsigned int count)
+guc_create_virtual(struct intel_engine_cs **siblings, unsigned int count,
+ unsigned long flags)
{
struct guc_virtual_engine *ve;
struct intel_guc *guc;
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index b1248a67b4f8..b153f8215403 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -1824,6 +1824,7 @@ struct drm_i915_gem_context_param {
* Extensions:
* i915_context_engines_load_balance (I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE)
* i915_context_engines_bond (I915_CONTEXT_ENGINES_EXT_BOND)
+ * i915_context_engines_parallel_submit (I915_CONTEXT_ENGINES_EXT_PARALLEL_SUBMIT)
*/
#define I915_CONTEXT_PARAM_ENGINES 0xa
@@ -2049,6 +2050,132 @@ struct i915_context_engines_bond {
struct i915_engine_class_instance engines[N__]; \
} __attribute__((packed)) name__
+/**
+ * struct i915_context_engines_parallel_submit - Configure engine for
+ * parallel submission.
+ *
+ * Setup a slot in the context engine map to allow multiple BBs to be submitted
+ * in a single execbuf IOCTL. Those BBs will then be scheduled to run on the GPU
+ * in parallel. Multiple hardware contexts are created internally in the i915
+ * run these BBs. Once a slot is configured for N BBs only N BBs can be
+ * submitted in each execbuf IOCTL and this is implicit behavior e.g. The user
+ * doesn't tell the execbuf IOCTL there are N BBs, the execbuf IOCTL knows how
+ * many BBs there are based on the slot's configuration. The N BBs are the last
+ * N buffer objects or first N if I915_EXEC_BATCH_FIRST is set.
+ *
+ * The default placement behavior is to create implicit bonds between each
+ * context if each context maps to more than 1 physical engine (e.g. context is
+ * a virtual engine). Also we only allow contexts of same engine class and these
+ * contexts must be in logically contiguous order. Examples of the placement
+ * behavior described below. Lastly, the default is to not allow BBs to
+ * preempted mid BB rather insert coordinated preemption on all hardware
+ * contexts between each set of BBs. Flags may be added in the future to change
+ * both of these default behaviors.
+ *
+ * Returns -EINVAL if hardware context placement configuration is invalid or if
+ * the placement configuration isn't supported on the platform / submission
+ * interface.
+ * Returns -ENODEV if extension isn't supported on the platform / submission
+ * interface.
+ *
+ * .. code-block:: none
+ *
+ * Example 1 pseudo code:
+ * CS[X] = generic engine of same class, logical instance X
+ * INVALID = I915_ENGINE_CLASS_INVALID, I915_ENGINE_CLASS_INVALID_NONE
+ * set_engines(INVALID)
+ * set_parallel(engine_index=0, width=2, num_siblings=1,
+ * engines=CS[0],CS[1])
+ *
+ * Results in the following valid placement:
+ * CS[0], CS[1]
+ *
+ * Example 2 pseudo code:
+ * CS[X] = generic engine of same class, logical instance X
+ * INVALID = I915_ENGINE_CLASS_INVALID, I915_ENGINE_CLASS_INVALID_NONE
+ * set_engines(INVALID)
+ * set_parallel(engine_index=0, width=2, num_siblings=2,
+ * engines=CS[0],CS[2],CS[1],CS[3])
+ *
+ * Results in the following valid placements:
+ * CS[0], CS[1]
+ * CS[2], CS[3]
+ *
+ * This can also be thought of as 2 virtual engines described by 2-D array
+ * in the engines the field with bonds placed between each index of the
+ * virtual engines. e.g. CS[0] is bonded to CS[1], CS[2] is bonded to
+ * CS[3].
+ * VE[0] = CS[0], CS[2]
+ * VE[1] = CS[1], CS[3]
+ *
+ * Example 3 pseudo code:
+ * CS[X] = generic engine of same class, logical instance X
+ * INVALID = I915_ENGINE_CLASS_INVALID, I915_ENGINE_CLASS_INVALID_NONE
+ * set_engines(INVALID)
+ * set_parallel(engine_index=0, width=2, num_siblings=2,
+ * engines=CS[0],CS[1],CS[1],CS[3])
+ *
+ * Results in the following valid and invalid placements:
+ * CS[0], CS[1]
+ * CS[1], CS[3] - Not logical contiguous, return -EINVAL
+ */
+struct i915_context_engines_parallel_submit {
+ /**
+ * @base: base user extension.
+ */
+ struct i915_user_extension base;
+
+ /**
+ * @engine_index: slot for parallel engine
+ */
+ __u16 engine_index;
+
+ /**
+ * @width: number of contexts per parallel engine
+ */
+ __u16 width;
+
+ /**
+ * @num_siblings: number of siblings per context
+ */
+ __u16 num_siblings;
+
+ /**
+ * @mbz16: reserved for future use; must be zero
+ */
+ __u16 mbz16;
+
+ /**
+ * @flags: all undefined flags must be zero, currently not defined flags
+ */
+ __u64 flags;
+
+ /**
+ * @mbz64: reserved for future use; must be zero
+ */
+ __u64 mbz64[3];
+
+ /**
+ * @engines: 2-d array of engine instances to configure parallel engine
+ *
+ * length = width (i) * num_siblings (j)
+ * index = j + i * num_siblings
+ */
+ struct i915_engine_class_instance engines[0];
+
+} __packed;
+
+#define I915_DEFINE_CONTEXT_ENGINES_PARALLEL_SUBMIT(name__, N__) struct { \
+ struct i915_user_extension base; \
+ __u16 engine_index; \
+ __u16 width; \
+ __u16 num_siblings; \
+ __u16 mbz16; \
+ __u64 flags; \
+ __u64 mbz64[3]; \
+ struct i915_engine_class_instance engines[N__]; \
+} __attribute__((packed)) name__
+
/**
* DOC: Context Engine Map uAPI
*
@@ -2108,6 +2235,7 @@ struct i915_context_param_engines {
__u64 extensions; /* linked chain of extension blocks, 0 terminates */
#define I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE 0 /* see i915_context_engines_load_balance */
#define I915_CONTEXT_ENGINES_EXT_BOND 1 /* see i915_context_engines_bond */
+#define I915_CONTEXT_ENGINES_EXT_PARALLEL_SUBMIT 2 /* see i915_context_engines_parallel_submit */
struct i915_engine_class_instance engines[0];
} __attribute__((packed));
--
2.32.0
next prev parent reply other threads:[~2021-08-20 22:51 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-20 22:44 [PATCH 00/27] Parallel submission aka multi-bb execbuf Matthew Brost
2021-08-20 22:44 ` [PATCH 01/27] drm/i915/guc: Squash Clean up GuC CI failures, simplify locking, and kernel DOC Matthew Brost
2021-08-20 22:44 ` [PATCH 02/27] drm/i915/guc: Allow flexible number of context ids Matthew Brost
2021-09-09 22:13 ` [Intel-gfx] " John Harrison
2021-09-10 0:14 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 03/27] drm/i915/guc: Connect the number of guc_ids to debugfs Matthew Brost
2021-09-09 22:16 ` [Intel-gfx] " John Harrison
2021-09-10 0:16 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 04/27] drm/i915/guc: Take GT PM ref when deregistering context Matthew Brost
2021-09-09 22:28 ` [Intel-gfx] " John Harrison
2021-09-10 0:21 ` Matthew Brost
2021-09-13 9:55 ` Tvrtko Ursulin
2021-09-13 17:12 ` Matthew Brost
2021-09-14 8:41 ` Tvrtko Ursulin
2021-08-20 22:44 ` [PATCH 05/27] drm/i915: Add GT PM unpark worker Matthew Brost
2021-09-09 22:36 ` [Intel-gfx] " John Harrison
2021-09-10 0:34 ` Matthew Brost
2021-09-10 8:36 ` Tvrtko Ursulin
2021-09-10 20:09 ` Matthew Brost
2021-09-13 10:33 ` Tvrtko Ursulin
2021-09-13 17:20 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 06/27] drm/i915/guc: Take engine PM when a context is pinned with GuC submission Matthew Brost
2021-09-09 22:46 ` [Intel-gfx] " John Harrison
2021-09-10 0:41 ` Matthew Brost
2021-09-13 22:26 ` John Harrison
2021-09-14 1:12 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 07/27] drm/i915/guc: Don't call switch_to_kernel_context " Matthew Brost
2021-09-09 22:51 ` [Intel-gfx] " John Harrison
2021-09-13 16:54 ` Matthew Brost
2021-09-13 22:38 ` John Harrison
2021-09-14 5:02 ` Matthew Brost
2021-09-13 16:55 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 08/27] drm/i915: Add logical engine mapping Matthew Brost
2021-09-10 11:12 ` [Intel-gfx] " Tvrtko Ursulin
2021-09-10 19:49 ` Matthew Brost
2021-09-13 9:24 ` Tvrtko Ursulin
2021-09-13 16:50 ` Matthew Brost
2021-09-14 8:34 ` Tvrtko Ursulin
2021-09-14 18:04 ` Matthew Brost
2021-09-15 8:24 ` Tvrtko Ursulin
2021-09-15 16:58 ` Matthew Brost
2021-09-16 8:31 ` Tvrtko Ursulin
2021-08-20 22:44 ` [PATCH 09/27] drm/i915: Expose logical engine instance to user Matthew Brost
2021-09-13 23:06 ` [Intel-gfx] " John Harrison
2021-09-14 1:08 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 10/27] drm/i915/guc: Introduce context parent-child relationship Matthew Brost
2021-09-13 23:19 ` [Intel-gfx] " John Harrison
2021-09-14 1:18 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 11/27] drm/i915/guc: Implement parallel context pin / unpin functions Matthew Brost
2021-08-20 22:44 ` [PATCH 12/27] drm/i915/guc: Add multi-lrc context registration Matthew Brost
2021-09-15 19:21 ` [Intel-gfx] " John Harrison
2021-09-15 19:31 ` Matthew Brost
2021-09-15 20:23 ` John Harrison
2021-09-15 20:33 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 13/27] drm/i915/guc: Ensure GuC schedule operations do not operate on child contexts Matthew Brost
2021-09-15 19:24 ` [Intel-gfx] " John Harrison
2021-09-15 19:34 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 14/27] drm/i915/guc: Assign contexts in parent-child relationship consecutive guc_ids Matthew Brost
2021-09-15 20:04 ` [Intel-gfx] " John Harrison
2021-09-15 20:55 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 15/27] drm/i915/guc: Implement multi-lrc submission Matthew Brost
2021-08-21 14:04 ` kernel test robot
2021-08-22 2:18 ` kernel test robot
2021-09-20 21:48 ` [Intel-gfx] " John Harrison
2021-09-22 16:25 ` Matthew Brost
2021-09-22 20:15 ` John Harrison
2021-09-23 2:44 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 16/27] drm/i915/guc: Insert submit fences between requests in parent-child relationship Matthew Brost
2021-09-20 21:57 ` [Intel-gfx] " John Harrison
2021-08-20 22:44 ` [PATCH 17/27] drm/i915/guc: Implement multi-lrc reset Matthew Brost
2021-09-20 22:44 ` [Intel-gfx] " John Harrison
2021-09-22 16:16 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 18/27] drm/i915/guc: Update debugfs for GuC multi-lrc Matthew Brost
2021-09-20 22:48 ` [Intel-gfx] " John Harrison
2021-09-21 19:13 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 19/27] drm/i915: Fix bug in user proto-context creation that leaked contexts Matthew Brost
2021-09-20 22:57 ` [Intel-gfx] " John Harrison
2021-09-21 14:49 ` Tvrtko Ursulin
2021-09-21 19:28 ` Matthew Brost
2021-09-21 19:28 ` Matthew Brost
2021-08-20 22:44 ` Matthew Brost [this message]
2021-08-29 4:00 ` [Intel-gfx] [PATCH 20/27] drm/i915/guc: Connect UAPI to GuC multi-lrc interface kernel test robot
2021-08-29 19:59 ` kernel test robot
2021-09-21 0:09 ` John Harrison
2021-09-22 16:38 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 21/27] drm/i915/doc: Update parallel submit doc to point to i915_drm.h Matthew Brost
2021-09-21 0:12 ` [Intel-gfx] " John Harrison
2021-08-20 22:44 ` [PATCH 22/27] drm/i915/guc: Add basic GuC multi-lrc selftest Matthew Brost
2021-09-28 20:47 ` [Intel-gfx] " John Harrison
2021-08-20 22:44 ` [PATCH 23/27] drm/i915/guc: Implement no mid batch preemption for multi-lrc Matthew Brost
2021-09-10 11:25 ` [Intel-gfx] " Tvrtko Ursulin
2021-09-10 20:49 ` Matthew Brost
2021-09-13 10:52 ` Tvrtko Ursulin
2021-09-28 22:20 ` John Harrison
2021-09-28 22:33 ` Matthew Brost
2021-09-28 23:33 ` John Harrison
2021-09-29 0:22 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 24/27] drm/i915: Multi-BB execbuf Matthew Brost
2021-08-21 19:01 ` [Intel-gfx] " kernel test robot
2021-08-30 3:46 ` kernel test robot
2021-09-30 22:16 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 25/27] drm/i915/guc: Handle errors in multi-lrc requests Matthew Brost
2021-09-29 20:44 ` [Intel-gfx] " John Harrison
2021-09-29 20:58 ` Matthew Brost
2021-08-20 22:44 ` [PATCH 26/27] drm/i915: Enable multi-bb execbuf Matthew Brost
2021-08-20 22:44 ` [PATCH 27/27] drm/i915/execlists: Weak parallel submission support for execlists Matthew Brost
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