This patch adds new IOCTL flags in amdgpu_context_IOCTL to get
and set GPU workload profile. These calls will allow a user to
switch to a GPU power profile which might be better suitable to
its workload type. The currently supported workload types are:
"None": Default workload profile
"3D": Workload profile for 3D rendering work
"Video": Workload profile for Media/Encode/Decode work
"VR": Workload profile for VR rendering work
"Compute": Workload profile for Compute work
The workload hint flag is saved in GPU context, and then its
applied when we actually run the job.
Cc: Alex Deucher <alexandar.deuc...@amd.com>
Signed-off-by: Shashank Sharma <shashank.sha...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 56 ++++++++++++++++++++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h | 1 +
2 files changed, 55 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index 8ee4e8491f39..5a116e5bb6a9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -27,6 +27,7 @@
#include "amdgpu.h"
#include "amdgpu_sched.h"
#include "amdgpu_ras.h"
+#include "amdgpu_ctx_workload.h"
#include <linux/nospec.h>
#define to_amdgpu_ctx_entity(e) \
@@ -328,7 +329,7 @@ static int amdgpu_ctx_init(struct amdgpu_ctx_mgr *mgr,
int32_t priority,
return r;
ctx->stable_pstate = current_stable_pstate;
-
+ ctx->workload_mode = AMDGPU_CTX_WORKLOAD_HINT_NONE;
return 0;
}
@@ -633,11 +634,41 @@ static int amdgpu_ctx_stable_pstate(struct amdgpu_device
*adev,
return r;
}
+static int amdgpu_ctx_workload_profile(struct amdgpu_device *adev,
+ struct amdgpu_fpriv *fpriv, uint32_t id,
+ bool set, u32 *profile)
+{
+ struct amdgpu_ctx *ctx;
+ struct amdgpu_ctx_mgr *mgr;
+ u32 workload_hint;
+
+ if (!fpriv)
+ return -EINVAL;
+
+ mgr = &fpriv->ctx_mgr;
+ mutex_lock(&mgr->lock);
+ ctx = idr_find(&mgr->ctx_handles, id);
+ if (!ctx) {
+ mutex_unlock(&mgr->lock);
+ return -EINVAL;
+ }
+
+ if (set) {
+ workload_hint = *profile;
+ ctx->workload_mode = workload_hint;
+ } else {
+ *profile = adev->pm.workload_mode;
+ }
+
+ mutex_unlock(&mgr->lock);
+ return 0;
+}
+
int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
int r;
- uint32_t id, stable_pstate;
+ uint32_t id, stable_pstate, wl_hint;
int32_t priority;
union drm_amdgpu_ctx *args = data;
@@ -681,6 +712,27 @@ int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
return -EINVAL;
r = amdgpu_ctx_stable_pstate(adev, fpriv, id, true,
&stable_pstate);
break;
+ case AMDGPU_CTX_OP_GET_WORKLOAD_PROFILE:
+ if (args->in.flags & ~AMDGPU_CTX_WORKLOAD_HINT_MASK)
+ return -EINVAL;
+ r = amdgpu_ctx_workload_profile(adev, fpriv, id, false,
&wl_hint);
+ if (!r)
+ args->out.workload.flags = wl_hint;
+ break;
+ case AMDGPU_CTX_OP_SET_WORKLOAD_PROFILE:
+ if (args->in.flags & ~AMDGPU_CTX_WORKLOAD_HINT_MASK)
+ return -EINVAL;
+ wl_hint = args->in.flags & AMDGPU_CTX_WORKLOAD_HINT_MASK;
+ if (wl_hint > AMDGPU_CTX_WORKLOAD_HINT_MAX)
+ return -EINVAL;
+ r = amdgpu_ctx_workload_profile(adev, fpriv, id, true,
&wl_hint);
+ if (r)
+ DRM_ERROR("Failed to set workload profile to %s\n",
+ amdgpu_workload_profile_name(wl_hint));
+ else
+ DRM_DEBUG_DRIVER("Workload profile set to %s\n",
+ amdgpu_workload_profile_name(wl_hint));
+ break;
default:
return -EINVAL;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h
index cc7c8afff414..6c8032c3291a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h
@@ -58,6 +58,7 @@ struct amdgpu_ctx {
unsigned long ras_counter_ce;
unsigned long ras_counter_ue;
uint32_t stable_pstate;
+ uint32_t workload_mode;
};
struct amdgpu_ctx_mgr {
--
2.34.1
