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drm/virtio: implement context init: track valid capabilities in a mask

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The valid capability IDs are between 1 to 63, and defined in the
virtio gpu spec.  This is used for error checking the subsequent
patches.  We're currently only using 2 capability IDs, so this
should be plenty for the immediate future.

Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Acked-by: Lingfeng Yang <lfy@google.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210921232024.817-4-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gurchetan Singh
2021-09-21 16:20:15 -07:00
committed by Gerd Hoffmann
parent b10790434c
commit 1925d6a7e0
2 changed files with 20 additions and 1 deletions
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3
drivers/gpu/drm/virtio/virtgpu_drv.h
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@@ -55,6 +55,8 @@
#define STATE_OK 1
#define STATE_ERR 2
#define MAX_CAPSET_ID 63
struct virtio_gpu_object_params {
unsigned long size;
bool dumb;
@@ -245,6 +247,7 @@ struct virtio_gpu_device {
struct virtio_gpu_drv_capset *capsets;
uint32_t num_capsets;
uint64_t capset_id_mask;
struct list_head cap_cache;
/* protects uuid state when exporting */