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Merge branch 'devices-affinity' into 'main'

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Draft: xf86drm: add drmDevicesQueryAffinity

See merge request mesa/libdrm!327
This commit is contained in:
Simon Ser 2025-11-09 19:03:55 +00:00
commit 513a445540
3 changed files with 91 additions and 0 deletions
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1
core-symbols.txt
View file

@ -38,6 +38,7 @@ drmDelContextTag
drmDestroyContext
drmDestroyDrawable
drmDevicesEqual
drmDevicesQueryAffinity
drmDMA
drmDropMaster
drmError

89
xf86drm.c
View file

@ -3807,6 +3807,95 @@ drm_public int drmDevicesEqual(drmDevicePtr a, drmDevicePtr b)
return 0;
}
static bool drmIsDisplayOnly(const char *driver)
{
return strcmp(driver, "armada-drm") == 0
|| strcmp(driver, "exynos") == 0
|| strcmp(driver, "hdlcd") == 0
|| strcmp(driver, "hx8357d") == 0
|| strcmp(driver, "ili9225") == 0
|| strcmp(driver, "ili9341") == 0
|| strcmp(driver, "imx-drm") == 0
|| strcmp(driver, "imx-dcss") == 0
|| strcmp(driver, "imx-lcdif") == 0
|| strcmp(driver, "ingenic-dr") == 0
|| strcmp(driver, "kirin") == 0
|| strcmp(driver, "komeda") == 0
|| strcmp(driver, "mali-dp") == 0
|| strcmp(driver, "mcde") == 0
|| strcmp(driver, "mediatek") == 0
|| strcmp(driver, "meson") == 0
|| strcmp(driver, "mi0283qt") == 0
|| strcmp(driver, "mxsfb-drm") == 0
|| strcmp(driver, "pl111") == 0
|| strcmp(driver, "rcar-du") == 0
|| strcmp(driver, "repaper") == 0
|| strcmp(driver, "rockchip") == 0
|| strcmp(driver, "st7586") == 0
|| strcmp(driver, "st7735r") == 0
|| strcmp(driver, "stm") == 0
|| strcmp(driver, "sun4i-drm") == 0;
}
static bool drmIsRenderOnly(const char *driver)
{
return strcmp(driver, "etnaviv") == 0
|| strcmp(driver, "lima") == 0
|| strcmp(driver, "v3d") == 0
|| strcmp(driver, "vc4") == 0
|| strcmp(driver, "freedreno") == 0
|| strcmp(driver, "panfrost") == 0
|| strcmp(driver, "asahi") == 0;
}
static drmVersion *drmGetVersionFromPath(const char *path)
{
int fd;
drmVersion *version;
fd = open(path, O_RDWR | O_CLOEXEC);
if (fd < 0)
return NULL;
version = drmGetVersion(fd);
close(fd);
return version;
}
drm_public int drmDevicesQueryAffinity(drmDevice *a, drmDevice *b)
{
drmDevice *render_device, *display_device;
drmVersion *render_version, *display_version;
bool is_render_only, is_display_only;
if (drmDevicesEqual(a, b))
return 1;
if (a->bustype != b->bustype)
return 0;
if (a->bustype != DRM_BUS_PLATFORM)
return 0;
if (a->available_nodes & (1 << DRM_NODE_RENDER)) {
render_device = a;
display_device = b;
} else if (b->available_nodes & (1 << DRM_NODE_RENDER)) {
render_device = b;
display_device = a;
} else {
return 0;
}
render_version = drmGetVersionFromPath(render_device->nodes[DRM_NODE_RENDER]);
display_version = drmGetVersionFromPath(display_device->nodes[DRM_NODE_PRIMARY]);
is_render_only = drmIsRenderOnly(render_version->name);
is_display_only = drmIsDisplayOnly(display_version->name);
drmFreeVersion(render_version);
drmFreeVersion(display_version);
return is_render_only && is_display_only;
}
static int drmGetNodeType(const char *name)
{
if (strncmp(name, DRM_RENDER_MINOR_NAME,

1
xf86drm.h
View file

@ -940,6 +940,7 @@ extern int drmGetNodeTypeFromDevId(dev_t devid);
* Returns 1 if the devices are equal, 0 otherwise.
*/
extern int drmDevicesEqual(drmDevicePtr a, drmDevicePtr b);
extern int drmDevicesQueryAffinity(drmDevice *a, drmDevice *b);
extern int drmSyncobjCreate(int fd, uint32_t flags, uint32_t *handle);
extern int drmSyncobjDestroy(int fd, uint32_t handle);