From: Gerd Hoffmann
A virtio-gpu vram object is based on range-based allocation.
No guest shmemfs backing, so we call drm_gem_private_object_init.
This is for host memory without any guest backing (atleast initially).
Signed-off-by: Gerd Hoffmann
Co-developed-by: Gurchetan Singh
Signed-off-by: Gurchetan Singh
Acked-by: Tomeu Vizoso
---
drivers/gpu/drm/virtio/Makefile | 2 +-
drivers/gpu/drm/virtio/virtgpu_debugfs.c | 18 +++
drivers/gpu/drm/virtio/virtgpu_drv.h | 23
drivers/gpu/drm/virtio/virtgpu_kms.c | 8 ++
drivers/gpu/drm/virtio/virtgpu_object.c | 12 ++
drivers/gpu/drm/virtio/virtgpu_vq.c | 66 +
drivers/gpu/drm/virtio/virtgpu_vram.c| 162 +++
7 files changed, 290 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/virtio/virtgpu_vram.c
diff --git a/drivers/gpu/drm/virtio/Makefile b/drivers/gpu/drm/virtio/Makefile
index 92aa2b3d349d..b99fa4a73b68 100644
--- a/drivers/gpu/drm/virtio/Makefile
+++ b/drivers/gpu/drm/virtio/Makefile
@@ -3,7 +3,7 @@
# Makefile for the drm device driver. This driver provides support for the
# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
-virtio-gpu-y := virtgpu_drv.o virtgpu_kms.o virtgpu_gem.o \
+virtio-gpu-y := virtgpu_drv.o virtgpu_kms.o virtgpu_gem.o virtgpu_vram.o \
virtgpu_display.o virtgpu_vq.o \
virtgpu_fence.o virtgpu_object.o virtgpu_debugfs.o virtgpu_plane.o \
virtgpu_ioctl.o virtgpu_prime.o virtgpu_trace_points.o
diff --git a/drivers/gpu/drm/virtio/virtgpu_debugfs.c
b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
index ea27cae28ab4..f81cfbff8c0b 100644
--- a/drivers/gpu/drm/virtio/virtgpu_debugfs.c
+++ b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
@@ -71,9 +71,27 @@ virtio_gpu_debugfs_irq_info(struct seq_file *m, void *data)
return 0;
}
+static int
+virtio_gpu_debugfs_host_visible_mm(struct seq_file *m, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *) m->private;
+ struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
+ struct drm_printer p;
+
+ if (!vgdev->has_host_visible) {
+ seq_printf(m, "Host allocations not visible to guest\n");
+ return 0;
+ }
+
+ p = drm_seq_file_printer(m);
+ drm_mm_print(>host_visible_mm, );
+ return 0;
+}
+
static struct drm_info_list virtio_gpu_debugfs_list[] = {
{ "virtio-gpu-features", virtio_gpu_features },
{ "virtio-gpu-irq-fence", virtio_gpu_debugfs_irq_info, 0, NULL },
+ { "virtio-gpu-host-visible-mm", virtio_gpu_debugfs_host_visible_mm },
};
#define VIRTIO_GPU_DEBUGFS_ENTRIES ARRAY_SIZE(virtio_gpu_debugfs_list)
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h
b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 34636cb5a93c..61f57b04525b 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -99,9 +99,19 @@ struct virtio_gpu_object_shmem {
uint32_t mapped;
};
+struct virtio_gpu_object_vram {
+ struct virtio_gpu_object base;
+ uint32_t map_state;
+ uint32_t map_info;
+ struct drm_mm_node vram_node;
+};
+
#define to_virtio_gpu_shmem(virtio_gpu_object) \
container_of((virtio_gpu_object), struct virtio_gpu_object_shmem, base)
+#define to_virtio_gpu_vram(virtio_gpu_object) \
+ container_of((virtio_gpu_object), struct virtio_gpu_object_vram, base)
+
struct virtio_gpu_object_array {
struct ww_acquire_ctx ticket;
struct list_head next;
@@ -222,6 +232,7 @@ struct virtio_gpu_device {
bool has_resource_blob;
bool has_host_visible;
struct virtio_shm_region host_visible_region;
+ struct drm_mm host_visible_mm;
struct work_struct config_changed_work;
@@ -234,6 +245,7 @@ struct virtio_gpu_device {
struct list_head cap_cache;
spinlock_t resource_export_lock;
+ spinlock_t host_visible_lock;
};
struct virtio_gpu_fpriv {
@@ -364,6 +376,12 @@ int
virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev,
struct virtio_gpu_object_array *objs);
+int virtio_gpu_cmd_map(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_object_array *objs, uint64_t offset);
+
+void virtio_gpu_cmd_unmap(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_object *bo);
+
/* virtgpu_display.c */
void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
@@ -410,4 +428,9 @@ struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
/* virtgpu_debugfs.c */
void virtio_gpu_debugfs_init(struct drm_minor *minor);
+/* virtgpu_vram.c */
+bool virtio_gpu_is_vram(struct virtio_gpu_object *bo);
+int virtio_gpu_vram_create(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_object_params *params,
+ struct
