xserver: Branch 'master' - 2 commits
GitLab Mirror
gitlab-mirror at kemper.freedesktop.org
Fri Sep 25 14:33:45 UTC 2020
hw/xfree86/drivers/modesetting/driver.c | 25 +++++++++-
hw/xfree86/drivers/modesetting/drmmode_display.c | 53 +++++++++++++++--------
hw/xfree86/drivers/modesetting/drmmode_display.h | 4 +
3 files changed, 60 insertions(+), 22 deletions(-)
New commits:
commit efb3abddd49fb75bd6d0e31046fed43d258c93da
Author: Kishore Kadiyala <kishore.kadiyala at intel.com>
Date: Sat Sep 19 01:28:14 2020 +0530
modesetting: keep going if a modeset fails on EnterVT
There was a time when setting a mode on a CRTC would not depend on the
associated connector's state. If a mode had been set successfully once,
it would mean it would work later on.
This changed with the introduction of new connectors type that now
require a link training sequence (DP, HDMI 2.0), and that means that
some events may have happened while the X server was not master that
would then prevent the mode from successfully be restored to its
previous state.
This patch relaxes the requirement that all modes should be restored on
EnterVT, or the entire X-Server would go down by allowing modesets to
fail (with some warnings). If a modeset fails, the CRTC will be
disabled, and a RandR event will be sent for the desktop environment to
fix the situation as well as possible.
Additional patches might be needed to make sure that the user would
never be left with all screens black in some scenarios.
v2 (Martin Peres):
- whitespace fixes
- remove the uevent handling (it is done in a previous patch)
- improve the commit message
- reduce the size of the patch by not changing lines needlessly
- return FALSE if one modeset fails in ignore mode
- add comments/todos to explain why we do things
- disable the CRTCs that failed the modeset
Signed-off-by: Kishore Kadiyala <kishore.kadiyala at intel.com>
Signed-off-by: Martin Peres <martin.peres at linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Tested-by: Kishore Kadiyala <kishore.kadiyala at intel.com>
Closes: #1010
diff --git a/hw/xfree86/drivers/modesetting/driver.c b/hw/xfree86/drivers/modesetting/driver.c
index cf9d3ca12..6549ef8e1 100644
--- a/hw/xfree86/drivers/modesetting/driver.c
+++ b/hw/xfree86/drivers/modesetting/driver.c
@@ -712,7 +712,7 @@ msBlockHandler_oneshot(ScreenPtr pScreen, void *pTimeout)
msBlockHandler(pScreen, pTimeout);
- drmmode_set_desired_modes(pScrn, &ms->drmmode, TRUE);
+ drmmode_set_desired_modes(pScrn, &ms->drmmode, TRUE, FALSE);
}
Bool
@@ -1530,7 +1530,7 @@ CreateScreenResources(ScreenPtr pScreen)
ret = pScreen->CreateScreenResources(pScreen);
pScreen->CreateScreenResources = CreateScreenResources;
- if (!drmmode_set_desired_modes(pScrn, &ms->drmmode, pScrn->is_gpu))
+ if (!drmmode_set_desired_modes(pScrn, &ms->drmmode, pScrn->is_gpu, FALSE))
return FALSE;
if (!drmmode_glamor_handle_new_screen_pixmap(&ms->drmmode))
@@ -2016,8 +2016,23 @@ EnterVT(ScrnInfoPtr pScrn)
drmmode_update_kms_state(&ms->drmmode);
- if (!drmmode_set_desired_modes(pScrn, &ms->drmmode, TRUE))
- return FALSE;
+ /* allow not all modes to be set successfully since some events might have
+ * happened while not being master that could prevent the previous
+ * configuration from being re-applied.
+ */
+ if (!drmmode_set_desired_modes(pScrn, &ms->drmmode, TRUE, TRUE)) {
+ xf86DisableUnusedFunctions(pScrn);
+
+ /* TODO: check that at least one screen is on, to allow the user to fix
+ * their setup if all modeset failed...
+ */
+
+ /* Tell the desktop environment that something changed, so that they
+ * can hopefully correct the situation
+ */
+ RRSetChanged(xf86ScrnToScreen(pScrn));
+ RRTellChanged(xf86ScrnToScreen(pScrn));
+ }
return TRUE;
}
diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.c b/hw/xfree86/drivers/modesetting/drmmode_display.c
index f4a174e76..d74f62ab6 100644
--- a/hw/xfree86/drivers/modesetting/drmmode_display.c
+++ b/hw/xfree86/drivers/modesetting/drmmode_display.c
@@ -3571,9 +3571,11 @@ drmmode_adjust_frame(ScrnInfoPtr pScrn, drmmode_ptr drmmode, int x, int y)
}
Bool
-drmmode_set_desired_modes(ScrnInfoPtr pScrn, drmmode_ptr drmmode, Bool set_hw)
+drmmode_set_desired_modes(ScrnInfoPtr pScrn, drmmode_ptr drmmode, Bool set_hw,
+ Bool ign_err)
{
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
+ Bool success = TRUE;
int c;
for (c = 0; c < config->num_crtc; c++) {
@@ -3621,8 +3623,17 @@ drmmode_set_desired_modes(ScrnInfoPtr pScrn, drmmode_ptr drmmode, Bool set_hw)
if (set_hw) {
if (!crtc->funcs->
set_mode_major(crtc, &crtc->desiredMode, crtc->desiredRotation,
- crtc->desiredX, crtc->desiredY))
- return FALSE;
+ crtc->desiredX, crtc->desiredY)) {
+ if (!ign_err)
+ return FALSE;
+ else {
+ success = FALSE;
+ crtc->enabled = FALSE;
+ xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
+ "Failed to set the desired mode on connector %s\n",
+ output->name);
+ }
+ }
} else {
crtc->mode = crtc->desiredMode;
crtc->rotation = crtc->desiredRotation;
@@ -3636,7 +3647,7 @@ drmmode_set_desired_modes(ScrnInfoPtr pScrn, drmmode_ptr drmmode, Bool set_hw)
/* Validate leases on VT re-entry */
drmmode_validate_leases(pScrn);
- return TRUE;
+ return success;
}
static void
diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.h b/hw/xfree86/drivers/modesetting/drmmode_display.h
index 205d1011f..ce85546bf 100644
--- a/hw/xfree86/drivers/modesetting/drmmode_display.h
+++ b/hw/xfree86/drivers/modesetting/drmmode_display.h
@@ -280,7 +280,8 @@ void drmmode_DisableSharedPixmapFlipping(xf86CrtcPtr crtc, drmmode_ptr drmmode);
extern Bool drmmode_pre_init(ScrnInfoPtr pScrn, drmmode_ptr drmmode, int cpp);
extern Bool drmmode_init(ScrnInfoPtr pScrn, drmmode_ptr drmmode);
void drmmode_adjust_frame(ScrnInfoPtr pScrn, drmmode_ptr drmmode, int x, int y);
-extern Bool drmmode_set_desired_modes(ScrnInfoPtr pScrn, drmmode_ptr drmmode, Bool set_hw);
+extern Bool drmmode_set_desired_modes(ScrnInfoPtr pScrn, drmmode_ptr drmmode,
+ Bool set_hw, Bool ign_err);
extern Bool drmmode_setup_colormap(ScreenPtr pScreen, ScrnInfoPtr pScrn);
extern void drmmode_update_kms_state(drmmode_ptr drmmode);
commit 293cf660c95d7ba36510bcc4114d7fd5c5f3801c
Author: Martin Peres <martin.peres at linux.intel.com>
Date: Fri Apr 24 18:06:16 2020 +0300
modesetting: check the kms state on EnterVT
Normally, we would receive a uevent coming from Linux's DRM subsystem,
which would trigger the check for disappearing/appearing resources.
However, this event is not received when X is not master (another VT
is selected), and so the userspace / desktop environment would not be
notified about the changes that happened while X wasn't master.
To fix the issue, this patch forces a refresh on EnterVT by splitting
the kms-checking code from the uevent handling into its own (exported)
function called drmmode_update_kms_state. This function is then called
from both the uevent-handling function, and on EnterVT right before
restoring the modes.
Signed-off-by: Martin Peres <martin.peres at linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Acked-by: Kishore Kadiyala <kishore.kadiyala at intel.com>
Tested-by: Kishore Kadiyala <kishore.kadiyala at intel.com>
diff --git a/hw/xfree86/drivers/modesetting/driver.c b/hw/xfree86/drivers/modesetting/driver.c
index 12e58e4f6..cf9d3ca12 100644
--- a/hw/xfree86/drivers/modesetting/driver.c
+++ b/hw/xfree86/drivers/modesetting/driver.c
@@ -2014,6 +2014,8 @@ EnterVT(ScrnInfoPtr pScrn)
SetMaster(pScrn);
+ drmmode_update_kms_state(&ms->drmmode);
+
if (!drmmode_set_desired_modes(pScrn, &ms->drmmode, TRUE))
return FALSE;
diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.c b/hw/xfree86/drivers/modesetting/drmmode_display.c
index 5dbfa4149..f4a174e76 100644
--- a/hw/xfree86/drivers/modesetting/drmmode_display.c
+++ b/hw/xfree86/drivers/modesetting/drmmode_display.c
@@ -3721,30 +3721,19 @@ drmmode_setup_colormap(ScreenPtr pScreen, ScrnInfoPtr pScrn)
return TRUE;
}
-#ifdef CONFIG_UDEV_KMS
-
#define DRM_MODE_LINK_STATUS_GOOD 0
#define DRM_MODE_LINK_STATUS_BAD 1
-static void
-drmmode_handle_uevents(int fd, void *closure)
+void
+drmmode_update_kms_state(drmmode_ptr drmmode)
{
- drmmode_ptr drmmode = closure;
ScrnInfoPtr scrn = drmmode->scrn;
- struct udev_device *dev;
drmModeResPtr mode_res;
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
int i, j;
Bool found = FALSE;
Bool changed = FALSE;
- while ((dev = udev_monitor_receive_device(drmmode->uevent_monitor))) {
- udev_device_unref(dev);
- found = TRUE;
- }
- if (!found)
- return;
-
/* Try to re-set the mode on all the connectors with a BAD link-state:
* This may happen if a link degrades and a new modeset is necessary, using
* different link-training parameters. If the kernel found that the current
@@ -3859,6 +3848,25 @@ out:
#undef DRM_MODE_LINK_STATUS_BAD
#undef DRM_MODE_LINK_STATUS_GOOD
+#ifdef CONFIG_UDEV_KMS
+
+static void
+drmmode_handle_uevents(int fd, void *closure)
+{
+ drmmode_ptr drmmode = closure;
+ struct udev_device *dev;
+ Bool found = FALSE;
+
+ while ((dev = udev_monitor_receive_device(drmmode->uevent_monitor))) {
+ udev_device_unref(dev);
+ found = TRUE;
+ }
+ if (!found)
+ return;
+
+ drmmode_update_kms_state(drmmode);
+}
+
#endif
void
diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.h b/hw/xfree86/drivers/modesetting/drmmode_display.h
index 6360dd048..205d1011f 100644
--- a/hw/xfree86/drivers/modesetting/drmmode_display.h
+++ b/hw/xfree86/drivers/modesetting/drmmode_display.h
@@ -283,6 +283,7 @@ void drmmode_adjust_frame(ScrnInfoPtr pScrn, drmmode_ptr drmmode, int x, int y);
extern Bool drmmode_set_desired_modes(ScrnInfoPtr pScrn, drmmode_ptr drmmode, Bool set_hw);
extern Bool drmmode_setup_colormap(ScreenPtr pScreen, ScrnInfoPtr pScrn);
+extern void drmmode_update_kms_state(drmmode_ptr drmmode);
extern void drmmode_uevent_init(ScrnInfoPtr scrn, drmmode_ptr drmmode);
extern void drmmode_uevent_fini(ScrnInfoPtr scrn, drmmode_ptr drmmode);
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