summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/i915/gvt/vgpu.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/vgpu.c')
-rw-r--r--drivers/gpu/drm/i915/gvt/vgpu.c128
1 files changed, 117 insertions, 11 deletions
diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c
index 41cfa5ccae84..6e3cbd8caec2 100644
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -64,18 +64,28 @@ void populate_pvinfo_page(struct intel_vgpu *vgpu)
WARN_ON(sizeof(struct vgt_if) != VGT_PVINFO_SIZE);
}
+#define VGPU_MAX_WEIGHT 16
+#define VGPU_WEIGHT(vgpu_num) \
+ (VGPU_MAX_WEIGHT / (vgpu_num))
+
static struct {
unsigned int low_mm;
unsigned int high_mm;
unsigned int fence;
+
+ /* A vGPU with a weight of 8 will get twice as much GPU as a vGPU
+ * with a weight of 4 on a contended host, different vGPU type has
+ * different weight set. Legal weights range from 1 to 16.
+ */
+ unsigned int weight;
enum intel_vgpu_edid edid;
char *name;
} vgpu_types[] = {
/* Fixed vGPU type table */
- { MB_TO_BYTES(64), MB_TO_BYTES(512), 4, GVT_EDID_1024_768, "8" },
- { MB_TO_BYTES(128), MB_TO_BYTES(512), 4, GVT_EDID_1920_1200, "4" },
- { MB_TO_BYTES(256), MB_TO_BYTES(1024), 4, GVT_EDID_1920_1200, "2" },
- { MB_TO_BYTES(512), MB_TO_BYTES(2048), 4, GVT_EDID_1920_1200, "1" },
+ { MB_TO_BYTES(64), MB_TO_BYTES(384), 4, VGPU_WEIGHT(8), GVT_EDID_1024_768, "8" },
+ { MB_TO_BYTES(128), MB_TO_BYTES(512), 4, VGPU_WEIGHT(4), GVT_EDID_1920_1200, "4" },
+ { MB_TO_BYTES(256), MB_TO_BYTES(1024), 4, VGPU_WEIGHT(2), GVT_EDID_1920_1200, "2" },
+ { MB_TO_BYTES(512), MB_TO_BYTES(2048), 4, VGPU_WEIGHT(1), GVT_EDID_1920_1200, "1" },
};
/**
@@ -120,6 +130,12 @@ int intel_gvt_init_vgpu_types(struct intel_gvt *gvt)
gvt->types[i].low_gm_size = vgpu_types[i].low_mm;
gvt->types[i].high_gm_size = vgpu_types[i].high_mm;
gvt->types[i].fence = vgpu_types[i].fence;
+
+ if (vgpu_types[i].weight < 1 ||
+ vgpu_types[i].weight > VGPU_MAX_WEIGHT)
+ return -EINVAL;
+
+ gvt->types[i].weight = vgpu_types[i].weight;
gvt->types[i].resolution = vgpu_types[i].edid;
gvt->types[i].avail_instance = min(low_avail / vgpu_types[i].low_mm,
high_avail / vgpu_types[i].high_mm);
@@ -131,11 +147,12 @@ int intel_gvt_init_vgpu_types(struct intel_gvt *gvt)
sprintf(gvt->types[i].name, "GVTg_V5_%s",
vgpu_types[i].name);
- gvt_dbg_core("type[%d]: %s avail %u low %u high %u fence %u res %s\n",
+ gvt_dbg_core("type[%d]: %s avail %u low %u high %u fence %u weight %u res %s\n",
i, gvt->types[i].name,
gvt->types[i].avail_instance,
gvt->types[i].low_gm_size,
gvt->types[i].high_gm_size, gvt->types[i].fence,
+ gvt->types[i].weight,
vgpu_edid_str(gvt->types[i].resolution));
}
@@ -179,20 +196,34 @@ static void intel_gvt_update_vgpu_types(struct intel_gvt *gvt)
}
/**
- * intel_gvt_destroy_vgpu - destroy a virtual GPU
+ * intel_gvt_active_vgpu - activate a virtual GPU
* @vgpu: virtual GPU
*
- * This function is called when user wants to destroy a virtual GPU.
+ * This function is called when user wants to activate a virtual GPU.
*
*/
-void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu)
+void intel_gvt_activate_vgpu(struct intel_vgpu *vgpu)
+{
+ mutex_lock(&vgpu->gvt->lock);
+ vgpu->active = true;
+ mutex_unlock(&vgpu->gvt->lock);
+}
+
+/**
+ * intel_gvt_deactive_vgpu - deactivate a virtual GPU
+ * @vgpu: virtual GPU
+ *
+ * This function is called when user wants to deactivate a virtual GPU.
+ * All virtual GPU runtime information will be destroyed.
+ *
+ */
+void intel_gvt_deactivate_vgpu(struct intel_vgpu *vgpu)
{
struct intel_gvt *gvt = vgpu->gvt;
mutex_lock(&gvt->lock);
vgpu->active = false;
- idr_remove(&gvt->vgpu_idr, vgpu->id);
if (atomic_read(&vgpu->running_workload_num)) {
mutex_unlock(&gvt->lock);
@@ -201,6 +232,26 @@ void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu)
}
intel_vgpu_stop_schedule(vgpu);
+
+ mutex_unlock(&gvt->lock);
+}
+
+/**
+ * intel_gvt_destroy_vgpu - destroy a virtual GPU
+ * @vgpu: virtual GPU
+ *
+ * This function is called when user wants to destroy a virtual GPU.
+ *
+ */
+void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu)
+{
+ struct intel_gvt *gvt = vgpu->gvt;
+
+ mutex_lock(&gvt->lock);
+
+ WARN(vgpu->active, "vGPU is still active!\n");
+
+ idr_remove(&gvt->vgpu_idr, vgpu->id);
intel_vgpu_clean_sched_policy(vgpu);
intel_vgpu_clean_gvt_context(vgpu);
intel_vgpu_clean_execlist(vgpu);
@@ -216,6 +267,59 @@ void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu)
mutex_unlock(&gvt->lock);
}
+#define IDLE_VGPU_IDR 0
+
+/**
+ * intel_gvt_create_idle_vgpu - create an idle virtual GPU
+ * @gvt: GVT device
+ *
+ * This function is called when user wants to create an idle virtual GPU.
+ *
+ * Returns:
+ * pointer to intel_vgpu, error pointer if failed.
+ */
+struct intel_vgpu *intel_gvt_create_idle_vgpu(struct intel_gvt *gvt)
+{
+ struct intel_vgpu *vgpu;
+ enum intel_engine_id i;
+ int ret;
+
+ vgpu = vzalloc(sizeof(*vgpu));
+ if (!vgpu)
+ return ERR_PTR(-ENOMEM);
+
+ vgpu->id = IDLE_VGPU_IDR;
+ vgpu->gvt = gvt;
+
+ for (i = 0; i < I915_NUM_ENGINES; i++)
+ INIT_LIST_HEAD(&vgpu->workload_q_head[i]);
+
+ ret = intel_vgpu_init_sched_policy(vgpu);
+ if (ret)
+ goto out_free_vgpu;
+
+ vgpu->active = false;
+
+ return vgpu;
+
+out_free_vgpu:
+ vfree(vgpu);
+ return ERR_PTR(ret);
+}
+
+/**
+ * intel_gvt_destroy_vgpu - destroy an idle virtual GPU
+ * @vgpu: virtual GPU
+ *
+ * This function is called when user wants to destroy an idle virtual GPU.
+ *
+ */
+void intel_gvt_destroy_idle_vgpu(struct intel_vgpu *vgpu)
+{
+ intel_vgpu_clean_sched_policy(vgpu);
+ vfree(vgpu);
+}
+
static struct intel_vgpu *__intel_gvt_create_vgpu(struct intel_gvt *gvt,
struct intel_vgpu_creation_params *param)
{
@@ -232,13 +336,15 @@ static struct intel_vgpu *__intel_gvt_create_vgpu(struct intel_gvt *gvt,
mutex_lock(&gvt->lock);
- ret = idr_alloc(&gvt->vgpu_idr, vgpu, 1, GVT_MAX_VGPU, GFP_KERNEL);
+ ret = idr_alloc(&gvt->vgpu_idr, vgpu, IDLE_VGPU_IDR + 1, GVT_MAX_VGPU,
+ GFP_KERNEL);
if (ret < 0)
goto out_free_vgpu;
vgpu->id = ret;
vgpu->handle = param->handle;
vgpu->gvt = gvt;
+ vgpu->sched_ctl.weight = param->weight;
bitmap_zero(vgpu->tlb_handle_pending, I915_NUM_ENGINES);
intel_vgpu_init_cfg_space(vgpu, param->primary);
@@ -277,7 +383,6 @@ static struct intel_vgpu *__intel_gvt_create_vgpu(struct intel_gvt *gvt,
if (ret)
goto out_clean_shadow_ctx;
- vgpu->active = true;
mutex_unlock(&gvt->lock);
return vgpu;
@@ -325,6 +430,7 @@ struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt,
param.low_gm_sz = type->low_gm_size;
param.high_gm_sz = type->high_gm_size;
param.fence_sz = type->fence;
+ param.weight = type->weight;
param.resolution = type->resolution;
/* XXX current param based on MB */
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-24 10:45:31 +0300