drm/msm: Add a name field for gem objects

For debugging purposes it is useful to assign descriptions
to buffers so that we know what they are used for. Add
a field to the buffer object and use that to name the various
kernel side allocations which ends up looking like like this
in /d/dri/X/gem:

   flags       id ref  offset   kaddr            size     madv      name
   00040000: I  0 ( 1) 00000000 0000000070b79eca 00004096           memptrs
      vmas: [gpu: 01000000,mapped,inuse=1]
   00020000: I  0 ( 1) 00000000 0000000031ed4074 00032768           ring0
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/adreno/a5xx_gpu.c

@@ -510,6 +510,7 @@ static int a5xx_ucode_init(struct msm_gpu *gpu)
 		a5xx_gpu->pm4_bo = adreno_fw_create_bo(gpu,
 			adreno_gpu->fw[ADRENO_FW_PM4], &a5xx_gpu->pm4_iova);
 
+
 		if (IS_ERR(a5xx_gpu->pm4_bo)) {
 			ret = PTR_ERR(a5xx_gpu->pm4_bo);
 			a5xx_gpu->pm4_bo = NULL;
@@ -517,6 +518,8 @@ static int a5xx_ucode_init(struct msm_gpu *gpu)
 				ret);
 			return ret;
 		}
+
+		msm_gem_object_set_name(a5xx_gpu->pm4_bo, "pm4fw");
 	}
 
 	if (!a5xx_gpu->pfp_bo) {
@@ -530,6 +533,8 @@ static int a5xx_ucode_init(struct msm_gpu *gpu)
 				ret);
 			return ret;
 		}
+
+		msm_gem_object_set_name(a5xx_gpu->pfp_bo, "pfpfw");
 	}
 
 	gpu_write64(gpu, REG_A5XX_CP_ME_INSTR_BASE_LO,
@@ -1214,6 +1219,9 @@ static int a5xx_crashdumper_init(struct msm_gpu *gpu,
 		SZ_1M, MSM_BO_UNCACHED, gpu->aspace,
 		&dumper->bo, &dumper->iova);
 
+	if (!IS_ERR(dumper->ptr))
+		msm_gem_object_set_name(dumper->bo, "crashdump");
+
 	return PTR_ERR_OR_ZERO(dumper->ptr);
 }
 

drivers/gpu/drm/msm/adreno/a5xx_power.c

@@ -300,6 +300,8 @@ void a5xx_gpmu_ucode_init(struct msm_gpu *gpu)
 	if (IS_ERR(ptr))
 		return;
 
+	msm_gem_object_set_name(a5xx_gpu->gpmu_bo, "gpmufw");
+
 	while (cmds_size > 0) {
 		int i;
 		uint32_t _size = cmds_size > TYPE4_MAX_PAYLOAD ?

drivers/gpu/drm/msm/adreno/a5xx_preempt.c

@@ -245,6 +245,8 @@ static int preempt_init_ring(struct a5xx_gpu *a5xx_gpu,
 	if (IS_ERR(ptr))
 		return PTR_ERR(ptr);
 
+	msm_gem_object_set_name(bo, "preempt");
+
 	a5xx_gpu->preempt_bo[ring->id] = bo;
 	a5xx_gpu->preempt_iova[ring->id] = iova;
 	a5xx_gpu->preempt[ring->id] = ptr;

drivers/gpu/drm/msm/adreno/a6xx_gpu.c

@@ -333,6 +333,8 @@ static int a6xx_ucode_init(struct msm_gpu *gpu)
 
 			return ret;
 		}
+
+		msm_gem_object_set_name(a6xx_gpu->sqe_bo, "sqefw");
 	}
 
 	gpu_write64(gpu, REG_A6XX_CP_SQE_INSTR_BASE_LO,

drivers/gpu/drm/msm/dsi/dsi_host.c

@@ -1083,6 +1083,8 @@ int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size)
 		return PTR_ERR(data);
 	}
 
+	msm_gem_object_set_name(msm_host->tx_gem_obj, "tx_gem");
+
 	msm_host->tx_size = msm_host->tx_gem_obj->size;
 
 	return 0;

drivers/gpu/drm/msm/msm_drv.c

@@ -810,7 +810,7 @@ static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
 	}
 
 	return msm_gem_new_handle(dev, file, args->size,
-			args->flags, &args->handle);
+			args->flags, &args->handle, NULL);
 }
 
 static inline ktime_t to_ktime(struct drm_msm_timespec timeout)

drivers/gpu/drm/msm/msm_drv.h

@@ -309,7 +309,7 @@ int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout);
 int msm_gem_cpu_fini(struct drm_gem_object *obj);
 void msm_gem_free_object(struct drm_gem_object *obj);
 int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file,
-		uint32_t size, uint32_t flags, uint32_t *handle);
+		uint32_t size, uint32_t flags, uint32_t *handle, char *name);
 struct drm_gem_object *msm_gem_new(struct drm_device *dev,
 		uint32_t size, uint32_t flags);
 struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev,
@@ -325,6 +325,8 @@ void msm_gem_kernel_put(struct drm_gem_object *bo,
 struct drm_gem_object *msm_gem_import(struct drm_device *dev,
 		struct dma_buf *dmabuf, struct sg_table *sgt);
 
+void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...);
+
 int msm_framebuffer_prepare(struct drm_framebuffer *fb,
 		struct msm_gem_address_space *aspace);
 void msm_framebuffer_cleanup(struct drm_framebuffer *fb,

drivers/gpu/drm/msm/msm_fb.c

@@ -237,6 +237,8 @@ msm_alloc_stolen_fb(struct drm_device *dev, int w, int h, int p, uint32_t format
 		return ERR_CAST(bo);
 	}
 
+	msm_gem_object_set_name(bo, "stolenfb");
+
 	fb = msm_framebuffer_init(dev, &mode_cmd, &bo);
 	if (IS_ERR(fb)) {
 		DRM_DEV_ERROR(dev->dev, "failed to allocate fb\n");

drivers/gpu/drm/msm/msm_gem.c

@@ -491,7 +491,7 @@ int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
 	args->pitch = align_pitch(args->width, args->bpp);
 	args->size  = PAGE_ALIGN(args->pitch * args->height);
 	return msm_gem_new_handle(dev, file, args->size,
-			MSM_BO_SCANOUT | MSM_BO_WC, &args->handle);
+			MSM_BO_SCANOUT | MSM_BO_WC, &args->handle, "dumb");
 }
 
 int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
@@ -794,7 +794,7 @@ void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
 			obj->name, kref_read(&obj->refcount),
 			off, msm_obj->vaddr);
 
-	seq_printf(m, " %08zu%9s\n", obj->size, madv);
+	seq_printf(m, " %08zu %9s %-32s\n", obj->size, madv, msm_obj->name);
 
 	if (!list_empty(&msm_obj->vmas)) {
 
@@ -833,7 +833,7 @@ void msm_gem_describe_objects(struct list_head *list, struct seq_file *m)
 	int count = 0;
 	size_t size = 0;
 
-	seq_puts(m, "   flags       id ref  offset   kaddr            size     madv\n");
+	seq_puts(m, "   flags       id ref  offset   kaddr            size     madv      name\n");
 	list_for_each_entry(msm_obj, list, mm_list) {
 		struct drm_gem_object *obj = &msm_obj->base;
 		seq_puts(m, "   ");
@@ -890,7 +890,8 @@ void msm_gem_free_object(struct drm_gem_object *obj)
 
 /* convenience method to construct a GEM buffer object, and userspace handle */
 int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file,
-		uint32_t size, uint32_t flags, uint32_t *handle)
+		uint32_t size, uint32_t flags, uint32_t *handle,
+		char *name)
 {
 	struct drm_gem_object *obj;
 	int ret;
@@ -900,6 +901,9 @@ int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file,
 	if (IS_ERR(obj))
 		return PTR_ERR(obj);
 
+	if (name)
+		msm_gem_object_set_name(obj, "%s", name);
+
 	ret = drm_gem_handle_create(file, obj, handle);
 
 	/* drop reference from allocate - handle holds it now */
@@ -1153,3 +1157,16 @@ void msm_gem_kernel_put(struct drm_gem_object *bo,
 	else
 		drm_gem_object_put_unlocked(bo);
 }
+
+void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...)
+{
+	struct msm_gem_object *msm_obj = to_msm_bo(bo);
+	va_list ap;
+
+	if (!fmt)
+		return;
+
+	va_start(ap, fmt);
+	vsnprintf(msm_obj->name, sizeof(msm_obj->name), fmt, ap);
+	va_end(ap);
+}

drivers/gpu/drm/msm/msm_gem.h

@@ -93,6 +93,8 @@ struct msm_gem_object {
 	 */
 	struct drm_mm_node *vram_node;
 	struct mutex lock; /* Protects resources associated with bo */
+
+	char name[32]; /* Identifier to print for the debugfs files */
 };
 #define to_msm_bo(x) container_of(x, struct msm_gem_object, base)
 

drivers/gpu/drm/msm/msm_gpu.c

@@ -950,6 +950,8 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 		goto fail;
 	}
 
+	msm_gem_object_set_name(gpu->memptrs_bo, "memptrs");
+
 	if (nr_rings > ARRAY_SIZE(gpu->rb)) {
 		DRM_DEV_INFO_ONCE(drm->dev, "Only creating %zu ringbuffers\n",
 			ARRAY_SIZE(gpu->rb));

drivers/gpu/drm/msm/msm_ringbuffer.c

@@ -45,6 +45,9 @@ struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id,
 		ring->start = 0;
 		goto fail;
 	}
+
+	msm_gem_object_set_name(ring->bo, "ring%d", id);
+
 	ring->end   = ring->start + (MSM_GPU_RINGBUFFER_SZ >> 2);
 	ring->next  = ring->start;
 	ring->cur   = ring->start;