[Intel-gfx] [PATCH v4 1/2] drm/i915: Make for_each_engine_masked work on intel_gt
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Thu Oct 17 16:18:52 UTC 2019
From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Medium term goal is to eliminate the i915->engine[] array and to get there
we have recently introduced equivalent array in intel_gt. Now we need to
migrate the code further towards this state.
This next step is to eliminate usage of i915->engines[] from the
for_each_engine_masked iterator.
For this to work we also need to use engine->id as index when populating
the gt->engine[] array and adjust the default engine set indexing to use
engine->legacy_idx instead of assuming gt->engines[] indexing.
v2:
* Populate gt->engine[] earlier.
* Check that we don't duplicate engine->legacy_idx
v3:
* Work around the initialization order issue between default_engines()
and intel_engines_driver_register() which sets engine->legacy_idx for
now. It will be fixed properly later.
v4:
* Merge with forgotten v2.5.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 13 ++++++++++---
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 5 +++++
drivers/gpu/drm/i915/gt/intel_engine_types.h | 1 +
drivers/gpu/drm/i915/gt/intel_engine_user.c | 18 +++++-------------
drivers/gpu/drm/i915/gt/intel_gt.c | 2 +-
drivers/gpu/drm/i915/gt/intel_hangcheck.c | 2 +-
drivers/gpu/drm/i915/gt/intel_reset.c | 12 ++++++------
drivers/gpu/drm/i915/gvt/execlist.c | 4 ++--
drivers/gpu/drm/i915/gvt/scheduler.c | 2 +-
drivers/gpu/drm/i915/i915_active.c | 4 ++--
drivers/gpu/drm/i915/i915_drv.h | 6 +++---
11 files changed, 37 insertions(+), 32 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 5d8221c7ba83..7b01f4605f21 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -203,15 +203,22 @@ static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx)
for_each_engine(engine, gt, id) {
struct intel_context *ce;
+ if (engine->legacy_idx == INVALID_ENGINE)
+ continue;
+
+ GEM_BUG_ON(engine->legacy_idx >= I915_NUM_ENGINES);
+ GEM_BUG_ON(e->engines[engine->legacy_idx]);
+
ce = intel_context_create(ctx, engine);
if (IS_ERR(ce)) {
- __free_engines(e, id);
+ __free_engines(e, e->num_engines + 1);
return ERR_CAST(ce);
}
- e->engines[id] = ce;
- e->num_engines = id + 1;
+ e->engines[engine->legacy_idx] = ce;
+ e->num_engines = max(e->num_engines, engine->legacy_idx);
}
+ e->num_engines++;
return e;
}
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index 5051a1fd2565..e514c68b0713 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -277,6 +277,9 @@ static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id)
BUILD_BUG_ON(MAX_ENGINE_CLASS >= BIT(GEN11_ENGINE_CLASS_WIDTH));
BUILD_BUG_ON(MAX_ENGINE_INSTANCE >= BIT(GEN11_ENGINE_INSTANCE_WIDTH));
+ if (GEM_DEBUG_WARN_ON(id >= ARRAY_SIZE(gt->engine)))
+ return -EINVAL;
+
if (GEM_DEBUG_WARN_ON(info->class > MAX_ENGINE_CLASS))
return -EINVAL;
@@ -293,6 +296,7 @@ static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id)
BUILD_BUG_ON(BITS_PER_TYPE(engine->mask) < I915_NUM_ENGINES);
engine->id = id;
+ engine->legacy_idx = INVALID_ENGINE;
engine->mask = BIT(id);
engine->i915 = gt->i915;
engine->gt = gt;
@@ -328,6 +332,7 @@ static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id)
intel_engine_sanitize_mmio(engine);
gt->engine_class[info->class][info->instance] = engine;
+ gt->engine[id] = engine;
intel_engine_add_user(engine);
gt->i915->engine[id] = engine;
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index 6199064f332b..3451be034caf 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -148,6 +148,7 @@ enum intel_engine_id {
VECS1,
#define _VECS(n) (VECS0 + (n))
I915_NUM_ENGINES
+#define INVALID_ENGINE ((enum intel_engine_id)-1)
};
struct st_preempt_hang {
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_user.c b/drivers/gpu/drm/i915/gt/intel_engine_user.c
index 77cd5de83930..7f7150a733f4 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_user.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_user.c
@@ -160,10 +160,10 @@ static int legacy_ring_idx(const struct legacy_ring *ring)
};
if (GEM_DEBUG_WARN_ON(ring->class >= ARRAY_SIZE(map)))
- return -1;
+ return INVALID_ENGINE;
if (GEM_DEBUG_WARN_ON(ring->instance >= map[ring->class].max))
- return -1;
+ return INVALID_ENGINE;
return map[ring->class].base + ring->instance;
}
@@ -171,23 +171,15 @@ static int legacy_ring_idx(const struct legacy_ring *ring)
static void add_legacy_ring(struct legacy_ring *ring,
struct intel_engine_cs *engine)
{
- int idx;
-
if (engine->gt != ring->gt || engine->class != ring->class) {
ring->gt = engine->gt;
ring->class = engine->class;
ring->instance = 0;
}
- idx = legacy_ring_idx(ring);
- if (unlikely(idx == -1))
- return;
-
- GEM_BUG_ON(idx >= ARRAY_SIZE(ring->gt->engine));
- ring->gt->engine[idx] = engine;
- ring->instance++;
-
- engine->legacy_idx = idx;
+ engine->legacy_idx = legacy_ring_idx(ring);
+ if (engine->legacy_idx != INVALID_ENGINE)
+ ring->instance++;
}
void intel_engines_driver_register(struct drm_i915_private *i915)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index b3619a2a5d0e..c99b6b2f38c2 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -186,7 +186,7 @@ intel_gt_clear_error_registers(struct intel_gt *gt,
struct intel_engine_cs *engine;
enum intel_engine_id id;
- for_each_engine_masked(engine, i915, engine_mask, id)
+ for_each_engine_masked(engine, gt, engine_mask, id)
gen8_clear_engine_error_register(engine);
}
}
diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
index c14dbeb3ccc3..b2af73984f93 100644
--- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
@@ -237,7 +237,7 @@ static void hangcheck_declare_hang(struct intel_gt *gt,
hung &= ~stuck;
len = scnprintf(msg, sizeof(msg),
"%s on ", stuck == hung ? "no progress" : "hang");
- for_each_engine_masked(engine, gt->i915, hung, tmp)
+ for_each_engine_masked(engine, gt, hung, tmp)
len += scnprintf(msg + len, sizeof(msg) - len,
"%s, ", engine->name);
msg[len-2] = '\0';
diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c
index 477bfafdb103..b191b0745703 100644
--- a/drivers/gpu/drm/i915/gt/intel_reset.c
+++ b/drivers/gpu/drm/i915/gt/intel_reset.c
@@ -298,7 +298,7 @@ static int gen6_reset_engines(struct intel_gt *gt,
intel_engine_mask_t tmp;
hw_mask = 0;
- for_each_engine_masked(engine, gt->i915, engine_mask, tmp) {
+ for_each_engine_masked(engine, gt, engine_mask, tmp) {
GEM_BUG_ON(engine->id >= ARRAY_SIZE(hw_engine_mask));
hw_mask |= hw_engine_mask[engine->id];
}
@@ -432,7 +432,7 @@ static int gen11_reset_engines(struct intel_gt *gt,
hw_mask = GEN11_GRDOM_FULL;
} else {
hw_mask = 0;
- for_each_engine_masked(engine, gt->i915, engine_mask, tmp) {
+ for_each_engine_masked(engine, gt, engine_mask, tmp) {
GEM_BUG_ON(engine->id >= ARRAY_SIZE(hw_engine_mask));
hw_mask |= hw_engine_mask[engine->id];
ret = gen11_lock_sfc(engine, &hw_mask);
@@ -451,7 +451,7 @@ static int gen11_reset_engines(struct intel_gt *gt,
* expiration).
*/
if (engine_mask != ALL_ENGINES)
- for_each_engine_masked(engine, gt->i915, engine_mask, tmp)
+ for_each_engine_masked(engine, gt, engine_mask, tmp)
gen11_unlock_sfc(engine);
return ret;
@@ -510,7 +510,7 @@ static int gen8_reset_engines(struct intel_gt *gt,
intel_engine_mask_t tmp;
int ret;
- for_each_engine_masked(engine, gt->i915, engine_mask, tmp) {
+ for_each_engine_masked(engine, gt, engine_mask, tmp) {
ret = gen8_engine_reset_prepare(engine);
if (ret && !reset_non_ready)
goto skip_reset;
@@ -536,7 +536,7 @@ static int gen8_reset_engines(struct intel_gt *gt,
ret = gen6_reset_engines(gt, engine_mask, retry);
skip_reset:
- for_each_engine_masked(engine, gt->i915, engine_mask, tmp)
+ for_each_engine_masked(engine, gt, engine_mask, tmp)
gen8_engine_reset_cancel(engine);
return ret;
@@ -1206,7 +1206,7 @@ void intel_gt_handle_error(struct intel_gt *gt,
* single reset fails.
*/
if (intel_has_reset_engine(gt) && !intel_gt_is_wedged(gt)) {
- for_each_engine_masked(engine, gt->i915, engine_mask, tmp) {
+ for_each_engine_masked(engine, gt, engine_mask, tmp) {
BUILD_BUG_ON(I915_RESET_MODESET >= I915_RESET_ENGINE);
if (test_and_set_bit(I915_RESET_ENGINE + engine->id,
>->reset.flags))
diff --git a/drivers/gpu/drm/i915/gvt/execlist.c b/drivers/gpu/drm/i915/gvt/execlist.c
index f21b8fb5b37e..d6e7a1189bad 100644
--- a/drivers/gpu/drm/i915/gvt/execlist.c
+++ b/drivers/gpu/drm/i915/gvt/execlist.c
@@ -534,7 +534,7 @@ static void clean_execlist(struct intel_vgpu *vgpu,
struct intel_vgpu_submission *s = &vgpu->submission;
intel_engine_mask_t tmp;
- for_each_engine_masked(engine, dev_priv, engine_mask, tmp) {
+ for_each_engine_masked(engine, &dev_priv->gt, engine_mask, tmp) {
kfree(s->ring_scan_buffer[engine->id]);
s->ring_scan_buffer[engine->id] = NULL;
s->ring_scan_buffer_size[engine->id] = 0;
@@ -548,7 +548,7 @@ static void reset_execlist(struct intel_vgpu *vgpu,
struct intel_engine_cs *engine;
intel_engine_mask_t tmp;
- for_each_engine_masked(engine, dev_priv, engine_mask, tmp)
+ for_each_engine_masked(engine, &dev_priv->gt, engine_mask, tmp)
init_vgpu_execlist(vgpu, engine->id);
}
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 6850f1f40241..9ebb2534558b 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -887,7 +887,7 @@ void intel_vgpu_clean_workloads(struct intel_vgpu *vgpu,
intel_engine_mask_t tmp;
/* free the unsubmited workloads in the queues. */
- for_each_engine_masked(engine, dev_priv, engine_mask, tmp) {
+ for_each_engine_masked(engine, &dev_priv->gt, engine_mask, tmp) {
list_for_each_entry_safe(pos, n,
&s->workload_q_head[engine->id], list) {
list_del_init(&pos->list);
diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c
index aa37c07004b9..7927b1a0c7a6 100644
--- a/drivers/gpu/drm/i915/i915_active.c
+++ b/drivers/gpu/drm/i915/i915_active.c
@@ -590,8 +590,8 @@ static struct active_node *reuse_idle_barrier(struct i915_active *ref, u64 idx)
int i915_active_acquire_preallocate_barrier(struct i915_active *ref,
struct intel_engine_cs *engine)
{
- struct drm_i915_private *i915 = engine->i915;
intel_engine_mask_t tmp, mask = engine->mask;
+ struct intel_gt *gt = engine->gt;
struct llist_node *pos, *next;
int err;
@@ -603,7 +603,7 @@ int i915_active_acquire_preallocate_barrier(struct i915_active *ref,
* We can then use the preallocated nodes in
* i915_active_acquire_barrier()
*/
- for_each_engine_masked(engine, i915, mask, tmp) {
+ for_each_engine_masked(engine, gt, mask, tmp) {
u64 idx = engine->kernel_context->timeline->fence_context;
struct active_node *node;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 88956f37d96c..40e923b0c2c8 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1415,10 +1415,10 @@ static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
for_each_if ((engine__) = (dev_priv__)->engine[(id__)])
/* Iterator over subset of engines selected by mask */
-#define for_each_engine_masked(engine__, dev_priv__, mask__, tmp__) \
- for ((tmp__) = (mask__) & INTEL_INFO(dev_priv__)->engine_mask; \
+#define for_each_engine_masked(engine__, gt__, mask__, tmp__) \
+ for ((tmp__) = (mask__) & INTEL_INFO((gt__)->i915)->engine_mask; \
(tmp__) ? \
- ((engine__) = (dev_priv__)->engine[__mask_next_bit(tmp__)]), 1 : \
+ ((engine__) = (gt__)->engine[__mask_next_bit(tmp__)]), 1 : \
0;)
#define rb_to_uabi_engine(rb) \
--
2.20.1
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