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third_party_mesa3d/src/gallium/auxiliary/target-helpers/drm_helper.h
Rob Clark 2ea4a59ab7 loader: Add better support for virtgpu nctx driver loading 
In the case of virtio_gpu, if the drm native context capset is
supported, we should try loading the native driver before falling back
to virgl.

Previously this was done with hacks in pipe_virtio_gpu_create_screen(),
but this also requires virgl's driconf to be the superset of virgl and
all the nctx drivers.

Instead add an optional loader callback to probe for nctx support.  This
is called with the drm capset, if the host supports the drm context
type, to allow driver specific code to determine if the specific GPU is
supported, so we can cleanly fall back to virgl if it does not (for ex,
an old VM guest with a newer host, where mesa in the guest does not
support the new GPU, but mesa in the host does).

TODO: How to handle the dynamic loader case?

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28777>
2024-05-23 20:02:03 +00:00

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#ifndef DRM_HELPER_H
#define DRM_HELPER_H
#include <stdio.h>
#include "target-helpers/inline_debug_helper.h"
#include "target-helpers/drm_helper_public.h"
#include "frontend/drm_driver.h"
#include "util/driconf.h"
/**
* Instantiate a drm_driver_descriptor struct.
*/
#define DEFINE_DRM_DRIVER_DESCRIPTOR(descriptor_name, driver, _driconf, _driconf_count, func, ...) \
const struct drm_driver_descriptor descriptor_name = { \
.driver_name = #driver, \
.driconf = _driconf, \
.driconf_count = _driconf_count, \
.create_screen = func, \
##__VA_ARGS__ \
};
/* The static pipe loader refers to the *_driver_descriptor structs for all
* drivers, regardless of whether they are configured in this Mesa build, or
* whether they're included in the specific gallium target. The target (dri,
* vdpau, etc.) will include this header with the #defines for the specific
* drivers it's including, and the disabled drivers will have a descriptor
* with a stub create function logging the failure.
*
* The dynamic pipe loader instead has target/pipeloader/pipe_*.c including
* this header in a pipe_*.so for each driver which will have one driver's
* GALLIUM_* defined. We make a single driver_descriptor entrypoint that is
* dlsym()ed by the dynamic pipe loader.
*/
#ifdef PIPE_LOADER_DYNAMIC
#define DRM_DRIVER_DESCRIPTOR(driver, driconf, driconf_count, ...) \
PUBLIC DEFINE_DRM_DRIVER_DESCRIPTOR(driver_descriptor, driver, driconf, driconf_count, pipe_##driver##_create_screen, __VA_ARGS__)
#define DRM_DRIVER_DESCRIPTOR_STUB(driver)
#define DRM_DRIVER_DESCRIPTOR_ALIAS(driver, alias, driconf, driconf_count)
#else
#define DRM_DRIVER_DESCRIPTOR(driver, driconf, driconf_count, ...) \
DEFINE_DRM_DRIVER_DESCRIPTOR(driver##_driver_descriptor, driver, driconf, driconf_count, pipe_##driver##_create_screen, __VA_ARGS__)
#define DRM_DRIVER_DESCRIPTOR_STUB(driver) \
static struct pipe_screen * \
pipe_##driver##_create_screen(int fd, const struct pipe_screen_config *config) \
{ \
fprintf(stderr, #driver ": driver missing\n"); \
return NULL; \
} \
DRM_DRIVER_DESCRIPTOR(driver, NULL, 0)
#define DRM_DRIVER_DESCRIPTOR_ALIAS(driver, alias, driconf, driconf_count) \
DEFINE_DRM_DRIVER_DESCRIPTOR(alias##_driver_descriptor, alias, driconf, \
driconf_count, pipe_##driver##_create_screen, NULL)
#endif
#ifdef GALLIUM_KMSRO_ONLY
#undef GALLIUM_V3D
#undef GALLIUM_VC4
#undef GALLIUM_FREEDRENO
#undef GALLIUM_ETNAVIV
#undef GALLIUM_PANFROST
#undef GALLIUM_LIMA
#undef GALLIUM_ASAHI
#endif
#ifdef GALLIUM_I915
#include "i915/drm/i915_drm_public.h"
#include "i915/i915_public.h"
static struct pipe_screen *
pipe_i915_create_screen(int fd, const struct pipe_screen_config *config)
{
struct i915_winsys *iws;
struct pipe_screen *screen;
iws = i915_drm_winsys_create(fd);
if (!iws)
return NULL;
screen = i915_screen_create(iws);
return screen ? debug_screen_wrap(screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(i915, NULL, 0)
#else
DRM_DRIVER_DESCRIPTOR_STUB(i915)
#endif
#ifdef GALLIUM_IRIS
#include "iris/drm/iris_drm_public.h"
static struct pipe_screen *
pipe_iris_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = iris_drm_screen_create(fd, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
const driOptionDescription iris_driconf[] = {
#include "iris/driinfo_iris.h"
};
DRM_DRIVER_DESCRIPTOR(iris, iris_driconf, ARRAY_SIZE(iris_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(iris)
#endif
#ifdef GALLIUM_CROCUS
#include "crocus/drm/crocus_drm_public.h"
static struct pipe_screen *
pipe_crocus_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = crocus_drm_screen_create(fd, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
const driOptionDescription crocus_driconf[] = {
#include "crocus/driinfo_crocus.h"
};
DRM_DRIVER_DESCRIPTOR(crocus, crocus_driconf, ARRAY_SIZE(crocus_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(crocus)
#endif
#ifdef GALLIUM_NOUVEAU
#include "nouveau/drm/nouveau_drm_public.h"
static struct pipe_screen *
pipe_nouveau_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = nouveau_drm_screen_create(fd);
return screen ? debug_screen_wrap(screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(nouveau, NULL, 0)
#else
DRM_DRIVER_DESCRIPTOR_STUB(nouveau)
#endif
#if defined(GALLIUM_VC4) || defined(GALLIUM_V3D)
const driOptionDescription v3d_driconf[] = {
#include "v3d/driinfo_v3d.h"
};
#endif
#ifdef GALLIUM_R300
#include "winsys/radeon_winsys.h"
#include "r300/r300_public.h"
static struct pipe_screen *
pipe_r300_create_screen(int fd, const struct pipe_screen_config *config)
{
struct radeon_winsys *rw;
rw = radeon_drm_winsys_create(fd, config, r300_screen_create);
return rw ? debug_screen_wrap(rw->screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(r300, NULL, 0)
#else
DRM_DRIVER_DESCRIPTOR_STUB(r300)
#endif
#ifdef GALLIUM_R600
#include "winsys/radeon_winsys.h"
#include "r600/r600_public.h"
static struct pipe_screen *
pipe_r600_create_screen(int fd, const struct pipe_screen_config *config)
{
struct radeon_winsys *rw;
rw = radeon_drm_winsys_create(fd, config, r600_screen_create);
return rw ? debug_screen_wrap(rw->screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(r600, NULL, 0)
#else
DRM_DRIVER_DESCRIPTOR_STUB(r600)
#endif
#ifdef GALLIUM_RADEONSI
#include "radeonsi/si_public.h"
static struct pipe_screen *
pipe_radeonsi_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen = radeonsi_screen_create(fd, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
const driOptionDescription radeonsi_driconf[] = {
#include "radeonsi/driinfo_radeonsi.h"
};
DRM_DRIVER_DESCRIPTOR(radeonsi, radeonsi_driconf, ARRAY_SIZE(radeonsi_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(radeonsi)
#endif
#ifdef GALLIUM_VMWGFX
#include "svga/drm/svga_drm_public.h"
#include "svga/svga_public.h"
static struct pipe_screen *
pipe_vmwgfx_create_screen(int fd, const struct pipe_screen_config *config)
{
struct svga_winsys_screen *sws;
struct pipe_screen *screen;
sws = svga_drm_winsys_screen_create(fd);
if (!sws)
return NULL;
screen = svga_screen_create(sws);
return screen ? debug_screen_wrap(screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(vmwgfx, NULL, 0)
#else
DRM_DRIVER_DESCRIPTOR_STUB(vmwgfx)
#endif
#ifdef GALLIUM_FREEDRENO
#include "freedreno/drm/freedreno_drm_public.h"
static struct pipe_screen *
pipe_msm_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = fd_drm_screen_create_renderonly(fd, NULL, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
const driOptionDescription msm_driconf[] = {
#ifdef GALLIUM_FREEDRENO
#include "freedreno/driinfo_freedreno.h"
#endif
};
DRM_DRIVER_DESCRIPTOR(msm, msm_driconf, ARRAY_SIZE(msm_driconf))
DRM_DRIVER_DESCRIPTOR_ALIAS(msm, kgsl, msm_driconf, ARRAY_SIZE(msm_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(msm)
DRM_DRIVER_DESCRIPTOR_STUB(kgsl)
#endif
#if defined(GALLIUM_VIRGL) || (defined(GALLIUM_FREEDRENO) && !defined(PIPE_LOADER_DYNAMIC))
#include "virgl/drm/virgl_drm_public.h"
#include "virgl/virgl_public.h"
static struct pipe_screen *
pipe_virtio_gpu_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen = NULL;
/* Try native guest driver(s) first, and then fallback to virgl: */
#ifdef GALLIUM_FREEDRENO
if (!screen)
screen = fd_drm_screen_create_renderonly(fd, NULL, config);
#endif
#ifdef GALLIUM_VIRGL
if (!screen)
screen = virgl_drm_screen_create(fd, config);
#endif
return screen ? debug_screen_wrap(screen) : NULL;
}
const driOptionDescription virgl_driconf[] = {
#include "virgl/virgl_driinfo.h.in"
};
DRM_DRIVER_DESCRIPTOR(virtio_gpu, virgl_driconf, ARRAY_SIZE(virgl_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(virtio_gpu)
#endif
#ifdef GALLIUM_VC4
#include "vc4/drm/vc4_drm_public.h"
static struct pipe_screen *
pipe_vc4_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = vc4_drm_screen_create(fd, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(vc4, v3d_driconf, ARRAY_SIZE(v3d_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(vc4)
#endif
#ifdef GALLIUM_V3D
#include "v3d/drm/v3d_drm_public.h"
static struct pipe_screen *
pipe_v3d_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = v3d_drm_screen_create(fd, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(v3d, v3d_driconf, ARRAY_SIZE(v3d_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(v3d)
#endif
#ifdef GALLIUM_PANFROST
#include "panfrost/drm/panfrost_drm_public.h"
static struct pipe_screen *
pipe_panfrost_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = panfrost_drm_screen_create(fd, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
const driOptionDescription pan_driconf[] = {
#include "panfrost/driinfo_panfrost.h"
};
DRM_DRIVER_DESCRIPTOR(panfrost, pan_driconf, ARRAY_SIZE(pan_driconf))
DRM_DRIVER_DESCRIPTOR_ALIAS(panfrost, panthor, pan_driconf, ARRAY_SIZE(pan_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(panfrost)
DRM_DRIVER_DESCRIPTOR_STUB(panthor)
#endif
#ifdef GALLIUM_ASAHI
#include "asahi/drm/asahi_drm_public.h"
static struct pipe_screen *
pipe_asahi_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = asahi_drm_screen_create(fd, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
const driOptionDescription asahi_driconf[] = {
#include "asahi/driinfo_asahi.h"
};
DRM_DRIVER_DESCRIPTOR(asahi, asahi_driconf, ARRAY_SIZE(asahi_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(asahi)
#endif
#ifdef GALLIUM_ETNAVIV
#include "etnaviv/drm/etnaviv_drm_public.h"
static struct pipe_screen *
pipe_etnaviv_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = etna_drm_screen_create(fd);
return screen ? debug_screen_wrap(screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(etnaviv, NULL, 0)
#else
DRM_DRIVER_DESCRIPTOR_STUB(etnaviv)
#endif
#ifdef GALLIUM_TEGRA
#include "tegra/drm/tegra_drm_public.h"
static struct pipe_screen *
pipe_tegra_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = tegra_drm_screen_create(fd);
return screen ? debug_screen_wrap(screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(tegra, NULL, 0)
#else
DRM_DRIVER_DESCRIPTOR_STUB(tegra)
#endif
#ifdef GALLIUM_LIMA
#include "lima/drm/lima_drm_public.h"
static struct pipe_screen *
pipe_lima_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = lima_drm_screen_create(fd);
return screen ? debug_screen_wrap(screen) : NULL;
}
DRM_DRIVER_DESCRIPTOR(lima, NULL, 0)
#else
DRM_DRIVER_DESCRIPTOR_STUB(lima)
#endif
#ifdef GALLIUM_ZINK
#include "zink/zink_public.h"
static struct pipe_screen *
pipe_zink_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = zink_drm_create_screen(fd, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
const driOptionDescription zink_driconf[] = {
#include "zink/driinfo_zink.h"
};
DRM_DRIVER_DESCRIPTOR(zink, zink_driconf, ARRAY_SIZE(zink_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(zink)
#endif
#ifdef GALLIUM_KMSRO
#include "kmsro/drm/kmsro_drm_public.h"
static struct pipe_screen *
pipe_kmsro_create_screen(int fd, const struct pipe_screen_config *config)
{
struct pipe_screen *screen;
screen = kmsro_drm_screen_create(fd, config);
return screen ? debug_screen_wrap(screen) : NULL;
}
const driOptionDescription kmsro_driconf[] = {
#if defined(GALLIUM_VC4) || defined(GALLIUM_V3D)
#include "v3d/driinfo_v3d.h"
#endif
#ifdef GALLIUM_ASAHI
#include "asahi/driinfo_asahi.h"
#endif
#ifdef GALLIUM_FREEDRENO
#include "freedreno/driinfo_freedreno.h"
#endif
#ifdef GALLIUM_PANFROST
#include "panfrost/driinfo_panfrost.h"
#endif
};
DRM_DRIVER_DESCRIPTOR(kmsro, kmsro_driconf, ARRAY_SIZE(kmsro_driconf))
#else
DRM_DRIVER_DESCRIPTOR_STUB(kmsro)
#endif
/* kmsro should be the last entry in the file. */
#endif /* DRM_HELPER_H */
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