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modesetting: Disable reverse prime offload mode for displays running on evdi,udl 

This mode for displays running on evdi/udl as side effect of failed glamor_egl_init
reverse_prime_offload_mode was initialized to FALSE

After Mesa upgrade to 21.0.0 GL_RENDERER is not llvmpipe that results in successful glamor_egl_init
and reverse_prime_offload_mode enabled.

This commit is explicitly disabling reverse_prime_offload_mode for evdi and udl drivers

Signed-off-by: Łukasz Spintzyk <lukasz.spintzyk@synaptics.com>
(cherry picked from commit 7e7c147105)
This commit is contained in:
Łukasz Spintzyk 2021-06-08 18:53:07 +02:00 committed by Matt Turner
parent 6272529339
commit 4e11bd390a
1 changed files with 14 additions and 2 deletions
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16
hw/xfree86/drivers/modesetting/driver.c
View File

@ -1752,18 +1752,30 @@ ScreenInit(ScreenPtr pScreen, int argc, char **argv)
"Failed to initialize the Present extension.\n"); "Failed to initialize the Present extension.\n");
} }
/* enable reverse prime if we are a GPU screen, and accelerated, and not /* enable reverse prime if we are a GPU screen, and accelerated, and not
* i915. i915 is happy scanning out from sysmem. */ * i915, evdi or udl. i915 is happy scanning out from sysmem.
* evdi and udl are virtual drivers scanning out from sysmem
* backed dumb buffers.
*/
if (pScreen->isGPU) { if (pScreen->isGPU) {
drmVersionPtr version; drmVersionPtr version;
/* enable if we are an accelerated GPU screen */ /* enable if we are an accelerated GPU screen */
ms->drmmode.reverse_prime_offload_mode = TRUE; ms->drmmode.reverse_prime_offload_mode = TRUE;
/* disable if we detect i915 */
if ((version = drmGetVersion(ms->drmmode.fd))) { if ((version = drmGetVersion(ms->drmmode.fd))) {
if (!strncmp("i915", version->name, version->name_len)) { if (!strncmp("i915", version->name, version->name_len)) {
ms->drmmode.reverse_prime_offload_mode = FALSE; ms->drmmode.reverse_prime_offload_mode = FALSE;
} }
if (!strncmp("evdi", version->name, version->name_len)) {
ms->drmmode.reverse_prime_offload_mode = FALSE;
}
if (!strncmp("udl", version->name, version->name_len)) {
ms->drmmode.reverse_prime_offload_mode = FALSE;
}
if (!ms->drmmode.reverse_prime_offload_mode) {
xf86DrvMsg(pScrn->scrnIndex, X_INFO,
"Disable reverse prime offload mode for %s.\n", version->name);
}
drmFreeVersion(version); drmFreeVersion(version);
} }
} }