From 1c055e55a242a33e574e48be530e06770a210dcd Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 19 Feb 2024 03:26:26 +0000
Subject: [PATCH] add r8169 read mac form eeprom
---
kernel/drivers/gpu/drm/virtio/virtgpu_prime.c | 126 ++++++++++++++++++++++++++++++------------
1 files changed, 90 insertions(+), 36 deletions(-)
diff --git a/kernel/drivers/gpu/drm/virtio/virtgpu_prime.c b/kernel/drivers/gpu/drm/virtio/virtgpu_prime.c
index 4bbdaed..acd14ef 100644
--- a/kernel/drivers/gpu/drm/virtio/virtgpu_prime.c
+++ b/kernel/drivers/gpu/drm/virtio/virtgpu_prime.c
@@ -22,53 +22,107 @@
* Authors: Andreas Pokorny
*/
+#include <drm/drm_prime.h>
+#include <linux/virtio_dma_buf.h>
+
#include "virtgpu_drv.h"
-/* Empty Implementations as there should not be any other driver for a virtual
- * device that might share buffers with virtgpu
- */
-
-struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj)
+static int virtgpu_virtio_get_uuid(struct dma_buf *buf,
+ uuid_t *uuid)
{
+ struct drm_gem_object *obj = buf->priv;
struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
+ struct virtio_gpu_device *vgdev = obj->dev->dev_private;
- if (!bo->tbo.ttm->pages || !bo->tbo.ttm->num_pages)
- /* should not happen */
- return ERR_PTR(-EINVAL);
+ wait_event(vgdev->resp_wq, bo->uuid_state != UUID_INITIALIZING);
+ if (bo->uuid_state != UUID_INITIALIZED)
+ return -ENODEV;
- return drm_prime_pages_to_sg(bo->tbo.ttm->pages,
- bo->tbo.ttm->num_pages);
+ uuid_copy(uuid, &bo->uuid);
+
+ return 0;
+}
+
+const struct virtio_dma_buf_ops virtgpu_dmabuf_ops = {
+ .ops = {
+ .cache_sgt_mapping = true,
+ .attach = virtio_dma_buf_attach,
+ .detach = drm_gem_map_detach,
+ .map_dma_buf = drm_gem_map_dma_buf,
+ .unmap_dma_buf = drm_gem_unmap_dma_buf,
+ .release = drm_gem_dmabuf_release,
+ .mmap = drm_gem_dmabuf_mmap,
+ .vmap = drm_gem_dmabuf_vmap,
+ .vunmap = drm_gem_dmabuf_vunmap,
+ },
+ .device_attach = drm_gem_map_attach,
+ .get_uuid = virtgpu_virtio_get_uuid,
+};
+
+struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,
+ int flags)
+{
+ struct dma_buf *buf;
+ struct drm_device *dev = obj->dev;
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
+ struct virtio_gpu_object_array *objs;
+ int ret = 0;
+ DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
+
+ if (vgdev->has_resource_assign_uuid) {
+ objs = virtio_gpu_array_alloc(1);
+ if (!objs)
+ return ERR_PTR(-ENOMEM);
+ virtio_gpu_array_add_obj(objs, &bo->base.base);
+
+ ret = virtio_gpu_cmd_resource_assign_uuid(vgdev, objs);
+ if (ret)
+ return ERR_PTR(ret);
+ virtio_gpu_notify(vgdev);
+ } else {
+ bo->uuid_state = UUID_INITIALIZATION_FAILED;
+ }
+
+ exp_info.ops = &virtgpu_dmabuf_ops.ops;
+ exp_info.size = obj->size;
+ exp_info.flags = flags;
+ exp_info.priv = obj;
+ exp_info.resv = obj->resv;
+
+ buf = virtio_dma_buf_export(&exp_info);
+ if (IS_ERR(buf))
+ return buf;
+
+ drm_dev_get(dev);
+ drm_gem_object_get(obj);
+
+ return buf;
+}
+
+struct drm_gem_object *virtgpu_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *buf)
+{
+ struct drm_gem_object *obj;
+
+ if (buf->ops == &virtgpu_dmabuf_ops.ops) {
+ obj = buf->priv;
+ if (obj->dev == dev) {
+ /*
+ * Importing dmabuf exported from our own gem increases
+ * refcount on gem itself instead of f_count of dmabuf.
+ */
+ drm_gem_object_get(obj);
+ return obj;
+ }
+ }
+
+ return drm_gem_prime_import(dev, buf);
}
struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
struct drm_device *dev, struct dma_buf_attachment *attach,
struct sg_table *table)
{
- WARN_ONCE(1, "not implemented");
return ERR_PTR(-ENODEV);
-}
-
-void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj)
-{
- struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
- int ret;
-
- ret = virtio_gpu_object_kmap(bo);
- if (ret)
- return NULL;
- return bo->vmap;
-}
-
-void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
-{
- virtio_gpu_object_kunmap(gem_to_virtio_gpu_obj(obj));
-}
-
-int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
- struct vm_area_struct *vma)
-{
- struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
-
- bo->gem_base.vma_node.vm_node.start = bo->tbo.vma_node.vm_node.start;
- return drm_gem_prime_mmap(obj, vma);
}
--
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