[virglrenderer-devel] [PATCH] virgl: handle getting new capsets.
Stéphane Marchesin
marcheu at chromium.org
Fri Feb 16 00:47:14 UTC 2018
On Thu, Feb 15, 2018 at 4:42 PM, Dave Airlie <airlied at gmail.com> wrote:
> From: Dave Airlie <airlied at redhat.com>
>
> This checks the kernel api is new enough and asks for the
> larger caps size since the kernel won't mess it up now.
>
> Signed-off-by: Dave Airlie <airlied at redhat.com>
> ---
> src/gallium/winsys/virgl/drm/virgl_drm_winsys.c | 77
> +++++++++++++++----------
> src/gallium/winsys/virgl/drm/virgl_drm_winsys.h | 1 +
> src/gallium/winsys/virgl/drm/virtgpu_drm.h | 2 +-
> 3 files changed, 50 insertions(+), 30 deletions(-)
>
> diff --git a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
> b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
> index fd6ae98a515..94098fc5e98 100644
> --- a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
> +++ b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
> @@ -699,52 +699,59 @@ static int virgl_drm_winsys_submit_cmd(struct
> virgl_winsys *qws,
> return ret;
> }
>
> +/* this defaults all newer caps,
> + * the kernel will overwrite these if newer version is available.
>
FWIW, here is the set of caps I see which are smaller than the existing
ones:
> + */
> +static void fill_new_caps_defaults(struct virgl_drm_caps *caps)
> +{
> + caps->caps.v2.min_aliased_point_size = 0.f;
>
1.
> + caps->caps.v2.max_aliased_point_size = 255.f;
>
> + caps->caps.v2.min_smooth_point_size = 0.f;
>
1.
> + caps->caps.v2.max_smooth_point_size = 255.f;
>
190.
> + caps->caps.v2.min_aliased_line_width = 0.f;
>
1.
+ caps->caps.v2.max_aliased_line_width = 255.f;
>
10.
> + caps->caps.v2.min_smooth_line_width = 0.f;
>
1.
> + caps->caps.v2.max_smooth_line_width = 255.f;
>
10.
> + caps->caps.v2.max_texture_lod_bias = 16.0f;
>
15.
> + caps->caps.v2.max_geom_output_vertices = 256;
> + caps->caps.v2.max_geom_total_output_components = 16384;
>
1024
> + caps->caps.v2.max_vertex_outputs = 32;
> + caps->caps.v2.max_vertex_attribs = 16;
> + caps->caps.v2.max_shader_patch_varyings = 0;
> + caps->caps.v2.min_texel_offset = -8;
> + caps->caps.v2.max_texel_offset = 7;
> + caps->caps.v2.min_texture_gather_offset = -8;
> + caps->caps.v2.max_texture_gather_offset = 7;
> +}
> +
> static int virgl_drm_get_caps(struct virgl_winsys *vws,
> struct virgl_drm_caps *caps)
> {
> struct virgl_drm_winsys *vdws = virgl_drm_winsys(vws);
> struct drm_virtgpu_get_caps args;
> int ret;
> - bool fill_v2 = false;
>
> - memset(&args, 0, sizeof(args));
> + fill_new_caps_defaults(caps);
>
> - args.cap_set_id = 1;
> + memset(&args, 0, sizeof(args));
> + if (vdws->has_capset_query_fix) {
> + /* if we have the query fix - try and get cap set id 2 first */
> + args.cap_set_id = 2;
> + args.size = sizeof(union virgl_caps);
> + } else {
> + args.cap_set_id = 1;
> + args.size = sizeof(struct virgl_caps_v1);
> + }
> args.addr = (unsigned long)&caps->caps;
> - args.size = sizeof(union virgl_caps);
>
> ret = drmIoctl(vdws->fd, DRM_IOCTL_VIRTGPU_GET_CAPS, &args);
> -
> if (ret == -1 && errno == EINVAL) {
> /* Fallback to v1 */
> + args.cap_set_id = 1;
> args.size = sizeof(struct virgl_caps_v1);
> ret = drmIoctl(vdws->fd, DRM_IOCTL_VIRTGPU_GET_CAPS, &args);
> if (ret == -1)
> return ret;
> - fill_v2 = true;
> - }
> - if (caps->caps.max_version == 1)
> - fill_v2 = true;
> -
> - if (fill_v2) {
> - caps->caps.v2.min_aliased_point_size = 0.f;
> - caps->caps.v2.max_aliased_point_size = 255.f;
> - caps->caps.v2.min_smooth_point_size = 0.f;
> - caps->caps.v2.max_smooth_point_size = 255.f;
> - caps->caps.v2.min_aliased_line_width = 0.f;
> - caps->caps.v2.max_aliased_line_width = 255.f;
> - caps->caps.v2.min_smooth_line_width = 0.f;
> - caps->caps.v2.max_smooth_line_width = 255.f;
> - caps->caps.v2.max_texture_lod_bias = 16.0f;
> - caps->caps.v2.max_geom_output_vertices = 256;
> - caps->caps.v2.max_geom_total_output_components = 16384;
> - caps->caps.v2.max_vertex_outputs = 32;
> - caps->caps.v2.max_vertex_attribs = 16;
> - caps->caps.v2.max_shader_patch_varyings = 0;
> - caps->caps.v2.min_texel_offset = -8;
> - caps->caps.v2.max_texel_offset = 7;
> - caps->caps.v2.min_texture_gather_offset = -8;
> - caps->caps.v2.max_texture_gather_offset = 7;
> }
> return ret;
> }
> @@ -813,6 +820,8 @@ static struct virgl_winsys *
> virgl_drm_winsys_create(int drmFD)
> {
> struct virgl_drm_winsys *qdws;
> + int ret;
> + struct drm_virtgpu_getparam getparam = {0};
>
> qdws = CALLOC_STRUCT(virgl_drm_winsys);
> if (!qdws)
> @@ -847,6 +856,16 @@ virgl_drm_winsys_create(int drmFD)
> qdws->base.fence_reference = virgl_fence_reference;
>
> qdws->base.get_caps = virgl_drm_get_caps;
> +
> + uint32_t value;
> + getparam.param = VIRTGPU_PARAM_CAPSET_QUERY_FIX;
> + getparam.value = (uint64_t)(uintptr_t)&value;
> + ret = drmIoctl(qdws->fd, DRM_IOCTL_VIRTGPU_GETPARAM, &getparam);
> + if (ret == 0) {
> + if (value == 1)
> + qdws->has_capset_query_fix = true;
> + }
> +
> return &qdws->base;
>
> }
> diff --git a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.h
> b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.h
> index f6772153a42..b28e7127ca0 100644
> --- a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.h
> +++ b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.h
> @@ -64,6 +64,7 @@ struct virgl_drm_winsys
> struct util_hash_table *bo_handles;
> struct util_hash_table *bo_names;
> mtx_t bo_handles_mutex;
> + bool has_capset_query_fix;
> };
>
> struct virgl_drm_cmd_buf {
> diff --git a/src/gallium/winsys/virgl/drm/virtgpu_drm.h
> b/src/gallium/winsys/virgl/drm/virtgpu_drm.h
> index 30bc3afdd81..f4b885a300c 100644
> --- a/src/gallium/winsys/virgl/drm/virtgpu_drm.h
> +++ b/src/gallium/winsys/virgl/drm/virtgpu_drm.h
> @@ -60,7 +60,7 @@ struct drm_virtgpu_execbuffer {
> };
>
> #define VIRTGPU_PARAM_3D_FEATURES 1 /* do we have 3D features in the hw */
> -
> +#define VIRTGPU_PARAM_CAPSET_QUERY_FIX 2
> struct drm_virtgpu_getparam {
> uint64_t param;
> uint64_t value;
> --
> 2.14.3
>
> _______________________________________________
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> virglrenderer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/virglrenderer-devel
>
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