To get a hardware queue priority for a context, we are currently
mapping AMDGPU_CTX_PRIORITY_* to DRM_SCHED_PRIORITY_* and then
to hardware queue priority, which is not the right way to do that
as DRM_SCHED_PRIORITY_* is software scheduler's priority and it is
independent from a hardware queue priority.
Use userspace provided context priority, AMDGPU_CTX_PRIORITY_* to
map a context to proper hardware queue priority.
Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 127 ++++++++++++++++------
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h | 8 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c | 44 ++------
3 files changed, 105 insertions(+), 74 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index e7a010b7ca1f..c88c5c6c54a2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -43,14 +43,61 @@ const unsigned int
amdgpu_ctx_num_entities[AMDGPU_HW_IP_NUM] = {
[AMDGPU_HW_IP_VCN_JPEG] = 1,
};
+bool amdgpu_ctx_priority_is_valid(int32_t ctx_prio)
+{
+ switch (ctx_prio) {
+ case AMDGPU_CTX_PRIORITY_UNSET:
+ case AMDGPU_CTX_PRIORITY_VERY_LOW:
+ case AMDGPU_CTX_PRIORITY_LOW:
+ case AMDGPU_CTX_PRIORITY_NORMAL:
+ case AMDGPU_CTX_PRIORITY_HIGH:
+ case AMDGPU_CTX_PRIORITY_VERY_HIGH:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static enum drm_sched_priority
+amdgpu_ctx_to_drm_sched_prio(int32_t ctx_prio)
+{
+ switch (ctx_prio) {
+ case AMDGPU_CTX_PRIORITY_UNSET:
+ return DRM_SCHED_PRIORITY_UNSET;
+
+ case AMDGPU_CTX_PRIORITY_VERY_LOW:
+ return DRM_SCHED_PRIORITY_MIN;
+
+ case AMDGPU_CTX_PRIORITY_LOW:
+ return DRM_SCHED_PRIORITY_MIN;
+
+ case AMDGPU_CTX_PRIORITY_NORMAL:
+ return DRM_SCHED_PRIORITY_NORMAL;
+
+ case AMDGPU_CTX_PRIORITY_HIGH:
+ return DRM_SCHED_PRIORITY_HIGH;
+
+ case AMDGPU_CTX_PRIORITY_VERY_HIGH:
+ return DRM_SCHED_PRIORITY_HIGH;
+
+ /* This should not happen as we sanitized userspace provided
priority
+ * already, WARN if this happens.
+ */
+ default:
+ WARN(1, "Invalid context priority %d\n", ctx_prio);
+ return DRM_SCHED_PRIORITY_NORMAL;
+ }
+
+}
+
static int amdgpu_ctx_priority_permit(struct drm_file *filp,
- enum drm_sched_priority priority)
+ int32_t priority)
{
- if (priority < 0 || priority >= DRM_SCHED_PRIORITY_COUNT)
+ if (!amdgpu_ctx_priority_is_valid(priority))
return -EINVAL;
/* NORMAL and below are accessible by everyone */
- if (priority <= DRM_SCHED_PRIORITY_NORMAL)
+ if (priority <= AMDGPU_CTX_PRIORITY_NORMAL)
return 0;
if (capable(CAP_SYS_NICE))
@@ -62,26 +109,35 @@ static int amdgpu_ctx_priority_permit(struct
drm_file *filp,
return -EACCES;
}
-static enum gfx_pipe_priority
amdgpu_ctx_sched_prio_to_compute_prio(enum drm_sched_priority prio)
+static enum gfx_pipe_priority
amdgpu_ctx_prio_to_compute_prio(int32_t prio)
{
switch (prio) {
- case DRM_SCHED_PRIORITY_HIGH:
- case DRM_SCHED_PRIORITY_KERNEL:
+ case AMDGPU_CTX_PRIORITY_HIGH:
+ case AMDGPU_CTX_PRIORITY_VERY_HIGH:
return AMDGPU_GFX_PIPE_PRIO_HIGH;
default:
return AMDGPU_GFX_PIPE_PRIO_NORMAL;
}
}
-static unsigned int amdgpu_ctx_prio_sched_to_hw(struct
amdgpu_device *adev,
- enum drm_sched_priority prio,
- u32 hw_ip)
+static unsigned int amdgpu_ctx_get_hw_prio(struct amdgpu_ctx *ctx,
u32 hw_ip)
{
+ struct amdgpu_device *adev = ctx->adev;
+ int32_t ctx_prio;
unsigned int hw_prio;
- hw_prio = (hw_ip == AMDGPU_HW_IP_COMPUTE) ?
- amdgpu_ctx_sched_prio_to_compute_prio(prio) :
- AMDGPU_RING_PRIO_DEFAULT;
+ ctx_prio = (ctx->override_priority == AMDGPU_CTX_PRIORITY_UNSET) ?
+ ctx->init_priority : ctx->override_priority;
+
+ switch (hw_ip) {
+ case AMDGPU_HW_IP_COMPUTE:
+ hw_prio = amdgpu_ctx_prio_to_compute_prio(ctx_prio);
+ break;
+ default:
+ hw_prio = AMDGPU_RING_PRIO_DEFAULT;
+ break;
+ }
+
hw_ip = array_index_nospec(hw_ip, AMDGPU_HW_IP_NUM);
if (adev->gpu_sched[hw_ip][hw_prio].num_scheds == 0)
hw_prio = AMDGPU_RING_PRIO_DEFAULT;
@@ -89,15 +145,17 @@ static unsigned int
amdgpu_ctx_prio_sched_to_hw(struct amdgpu_device *adev,
return hw_prio;
}
+
static int amdgpu_ctx_init_entity(struct amdgpu_ctx *ctx, u32 hw_ip,
- const u32 ring)
+ const u32 ring)
{
struct amdgpu_device *adev = ctx->adev;
struct amdgpu_ctx_entity *entity;
struct drm_gpu_scheduler **scheds = NULL, *sched = NULL;
unsigned num_scheds = 0;
+ int32_t ctx_prio;
unsigned int hw_prio;
- enum drm_sched_priority priority;
+ enum drm_sched_priority drm_prio;
int r;
entity = kzalloc(struct_size(entity, fences, amdgpu_sched_jobs),
@@ -105,10 +163,11 @@ static int amdgpu_ctx_init_entity(struct
amdgpu_ctx *ctx, u32 hw_ip,
if (!entity)
return -ENOMEM;
+ ctx_prio = (ctx->override_priority ==
AMDGPU_CTX_PRIORITY_UNSET) ?
+ ctx->init_priority : ctx->override_priority;
entity->sequence = 1;
- priority = (ctx->override_priority == DRM_SCHED_PRIORITY_UNSET) ?
- ctx->init_priority : ctx->override_priority;
- hw_prio = amdgpu_ctx_prio_sched_to_hw(adev, priority, hw_ip);
+ hw_prio = amdgpu_ctx_get_hw_prio(ctx, hw_ip);
+ drm_prio = amdgpu_ctx_to_drm_sched_prio(ctx_prio);
hw_ip = array_index_nospec(hw_ip, AMDGPU_HW_IP_NUM);
scheds = adev->gpu_sched[hw_ip][hw_prio].sched;
@@ -124,7 +183,7 @@ static int amdgpu_ctx_init_entity(struct
amdgpu_ctx *ctx, u32 hw_ip,
num_scheds = 1;
}
- r = drm_sched_entity_init(&entity->entity, priority, scheds,
num_scheds,
+ r = drm_sched_entity_init(&entity->entity, drm_prio, scheds,
num_scheds,
&ctx->guilty);
if (r)
goto error_free_entity;
@@ -139,7 +198,7 @@ static int amdgpu_ctx_init_entity(struct
amdgpu_ctx *ctx, u32 hw_ip,
}
static int amdgpu_ctx_init(struct amdgpu_device *adev,
- enum drm_sched_priority priority,
+ int32_t priority,
struct drm_file *filp,
struct amdgpu_ctx *ctx)
{
@@ -161,7 +220,7 @@ static int amdgpu_ctx_init(struct amdgpu_device
*adev,
ctx->reset_counter_query = ctx->reset_counter;
ctx->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
ctx->init_priority = priority;
- ctx->override_priority = DRM_SCHED_PRIORITY_UNSET;
+ ctx->override_priority = AMDGPU_CTX_PRIORITY_UNSET;
return 0;
}
@@ -234,7 +293,7 @@ int amdgpu_ctx_get_entity(struct amdgpu_ctx *ctx,
u32 hw_ip, u32 instance,
static int amdgpu_ctx_alloc(struct amdgpu_device *adev,
struct amdgpu_fpriv *fpriv,
struct drm_file *filp,
- enum drm_sched_priority priority,
+ int32_t priority,
uint32_t *id)
{
struct amdgpu_ctx_mgr *mgr = &fpriv->ctx_mgr;
@@ -397,19 +456,19 @@ int amdgpu_ctx_ioctl(struct drm_device *dev,
void *data,
{
int r;
uint32_t id;
- enum drm_sched_priority priority;
+ int32_t priority;
union drm_amdgpu_ctx *args = data;
struct amdgpu_device *adev = drm_to_adev(dev);
struct amdgpu_fpriv *fpriv = filp->driver_priv;
id = args->in.ctx_id;
- r = amdgpu_to_sched_priority(args->in.priority, &priority);
+ priority = args->in.priority;
/* For backwards compatibility reasons, we need to accept
* ioctls with garbage in the priority field */
- if (r == -EINVAL)
- priority = DRM_SCHED_PRIORITY_NORMAL;
+ if (!amdgpu_ctx_priority_is_valid(priority))
+ priority = AMDGPU_CTX_PRIORITY_NORMAL;
switch (args->in.op) {
case AMDGPU_CTX_OP_ALLOC_CTX:
@@ -515,9 +574,9 @@ struct dma_fence *amdgpu_ctx_get_fence(struct
amdgpu_ctx *ctx,
}
static void amdgpu_ctx_set_entity_priority(struct amdgpu_ctx *ctx,
- struct amdgpu_ctx_entity *aentity,
- int hw_ip,
- enum drm_sched_priority priority)
+ struct amdgpu_ctx_entity *aentity,
+ int hw_ip,
+ int32_t priority)
{
struct amdgpu_device *adev = ctx->adev;
unsigned int hw_prio;
@@ -525,12 +584,12 @@ static void
amdgpu_ctx_set_entity_priority(struct amdgpu_ctx *ctx,
unsigned num_scheds;
/* set sw priority */
- drm_sched_entity_set_priority(&aentity->entity, priority);
+ drm_sched_entity_set_priority(&aentity->entity,
+ amdgpu_ctx_to_drm_sched_prio(priority));
/* set hw priority */
if (hw_ip == AMDGPU_HW_IP_COMPUTE) {
- hw_prio = amdgpu_ctx_prio_sched_to_hw(adev, priority,
- AMDGPU_HW_IP_COMPUTE);
+ hw_prio = amdgpu_ctx_get_hw_prio(ctx, hw_ip);
hw_prio = array_index_nospec(hw_prio, AMDGPU_RING_PRIO_MAX);
