The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From 3b84525544be4ca0481110263a6d73eb00741cf3 Mon Sep 17 00:00:00 2001
From: Wayne Lin <Wayne.Lin(a)amd.com>
Date: Tue, 2 Jan 2024 14:20:37 +0800
Subject: [PATCH] drm/amd/display: Align the returned error code with legacy DP
[Why]
For usb4 connector, AUX transaction is handled by dmub utilizing a differnt
code path comparing to legacy DP connector. If the usb4 DP connector is
disconnected, AUX access will report EBUSY and cause igt@kms_dp_aux_dev
fail.
[How]
Align the error code with the one reported by legacy DP as EIO.
Cc: Mario Limonciello <mario.limonciello(a)amd.com>
Cc: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)vger.kernel.org
Acked-by: Alex Hung <alex.hung(a)amd.com>
Signed-off-by: Wayne Lin <Wayne.Lin(a)amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
index eaf8d9f482446..85b7f58a7f35a 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -979,6 +979,11 @@ int dm_helper_dmub_aux_transfer_sync(
struct aux_payload *payload,
enum aux_return_code_type *operation_result)
{
+ if (!link->hpd_status) {
+ *operation_result = AUX_RET_ERROR_HPD_DISCON;
+ return -1;
+ }
+
return amdgpu_dm_process_dmub_aux_transfer_sync(ctx, link->link_index, payload,
operation_result);
}
--
2.43.0
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From 3d066f9547dd58329b526db44f42c487a7974703 Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas(a)amd.com>
Date: Wed, 21 Feb 2024 12:27:31 -0500
Subject: [PATCH] drm/amd/display: Fix idle check for shared firmware state
[WHY]
We still had an instance of get_idle_state checking the PMFW scratch
register instead of the actual idle allow signal.
[HOW]
Replace it with the SW state check for whether we had allowed idle
through notify_idle.
Cc: Mario Limonciello <mario.limonciello(a)amd.com>
Cc: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)vger.kernel.org
Reviewed-by: Duncan Ma <duncan.ma(a)amd.com>
Acked-by: Alex Hung <alex.hung(a)amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas(a)amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 613d09c42f3b9..958552a8605ff 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -4847,22 +4847,16 @@ void dc_exit_ips_for_hw_access(struct dc *dc)
bool dc_dmub_is_ips_idle_state(struct dc *dc)
{
- uint32_t idle_state = 0;
-
if (dc->debug.disable_idle_power_optimizations)
return false;
if (!dc->caps.ips_support || (dc->config.disable_ips == DMUB_IPS_DISABLE_ALL))
return false;
- if (dc->hwss.get_idle_state)
- idle_state = dc->hwss.get_idle_state(dc);
-
- if (!(idle_state & DMUB_IPS1_ALLOW_MASK) ||
- !(idle_state & DMUB_IPS2_ALLOW_MASK))
- return true;
+ if (!dc->ctx->dmub_srv)
+ return false;
- return false;
+ return dc->ctx->dmub_srv->idle_allowed;
}
/* set min and max memory clock to lowest and highest DPM level, respectively */
--
2.43.0
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From 7af03e688792293ba33149fb8df619a8dff90e80 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula(a)intel.com>
Date: Fri, 8 Mar 2024 18:03:39 +0200
Subject: [PATCH] drm/probe-helper: warn about negative .get_modes()
The .get_modes() callback is supposed to return the number of modes,
never a negative error code. If a negative value is returned, it'll just
be interpreted as a negative count, and added to previous calculations.
Document the rules, but handle the negative values gracefully with an
error message.
Cc: stable(a)vger.kernel.org
Acked-by: Thomas Zimmermann <tzimmermann(a)suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/50208c866facc33226a3c77b82bb9…
Signed-off-by: Jani Nikula <jani.nikula(a)intel.com>
---
drivers/gpu/drm/drm_probe_helper.c | 7 +++++++
include/drm/drm_modeset_helper_vtables.h | 3 ++-
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index 19ecb749704be..75f84753f6ee3 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -422,6 +422,13 @@ static int drm_helper_probe_get_modes(struct drm_connector *connector)
count = connector_funcs->get_modes(connector);
+ /* The .get_modes() callback should not return negative values. */
+ if (count < 0) {
+ drm_err(connector->dev, ".get_modes() returned %pe\n",
+ ERR_PTR(count));
+ count = 0;
+ }
+
/*
* Fallback for when DDC probe failed in drm_get_edid() and thus skipped
* override/firmware EDID.
diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index 881b03e4dc288..9ed42469540eb 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -898,7 +898,8 @@ struct drm_connector_helper_funcs {
*
* RETURNS:
*
- * The number of modes added by calling drm_mode_probed_add().
+ * The number of modes added by calling drm_mode_probed_add(). Return 0
+ * on failures (no modes) instead of negative error codes.
*/
int (*get_modes)(struct drm_connector *connector);
--
2.43.0
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From 7fb19d9510937121a1f285894cffd30bc96572e3 Mon Sep 17 00:00:00 2001
From: Josip Pavic <josip.pavic(a)amd.com>
Date: Fri, 9 Feb 2024 16:05:18 -0500
Subject: [PATCH] drm/amd/display: Allow dirty rects to be sent to dmub when
abm is active
[WHY]
It's beneficial for ABM to know when new frame data are available.
[HOW]
Add new condition to allow dirty rects to be sent to DMUB when ABM is
active. ABM will use this as a signal that a new frame has arrived.
Cc: Mario Limonciello <mario.limonciello(a)amd.com>
Cc: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)vger.kernel.org
Reviewed-by: Anthony Koo <anthony.koo(a)amd.com>
Acked-by: Alex Hung <alex.hung(a)amd.com>
Signed-off-by: Josip Pavic <josip.pavic(a)amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 5211c1c0f3c0c..613d09c42f3b9 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -3270,6 +3270,9 @@ static bool dc_dmub_should_send_dirty_rect_cmd(struct dc *dc, struct dc_stream_s
if (stream->link->replay_settings.config.replay_supported)
return true;
+ if (stream->ctx->dce_version >= DCN_VERSION_3_5 && stream->abm_level)
+ return true;
+
return false;
}
--
2.43.0
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From 9c68ece8b2a5c5ff9b2fcaea923dd73efeb174cd Mon Sep 17 00:00:00 2001
From: Huacai Chen <chenhuacai(a)loongson.cn>
Date: Tue, 19 Mar 2024 15:50:34 +0800
Subject: [PATCH] LoongArch: Define the __io_aw() hook as mmiowb()
Commit fb24ea52f78e0d595852e ("drivers: Remove explicit invocations of
mmiowb()") remove all mmiowb() in drivers, but it says:
"NOTE: mmiowb() has only ever guaranteed ordering in conjunction with
spin_unlock(). However, pairing each mmiowb() removal in this patch with
the corresponding call to spin_unlock() is not at all trivial, so there
is a small chance that this change may regress any drivers incorrectly
relying on mmiowb() to order MMIO writes between CPUs using lock-free
synchronisation."
The mmio in radeon_ring_commit() is protected by a mutex rather than a
spinlock, but in the mutex fastpath it behaves similar to spinlock. We
can add mmiowb() calls in the radeon driver but the maintainer says he
doesn't like such a workaround, and radeon is not the only example of
mutex protected mmio.
So we should extend the mmiowb tracking system from spinlock to mutex,
and maybe other locking primitives. This is not easy and error prone, so
we solve it in the architectural code, by simply defining the __io_aw()
hook as mmiowb(). And we no longer need to override queued_spin_unlock()
so use the generic definition.
Without this, we get such an error when run 'glxgears' on weak ordering
architectures such as LoongArch:
radeon 0000:04:00.0: ring 0 stalled for more than 10324msec
radeon 0000:04:00.0: ring 3 stalled for more than 10240msec
radeon 0000:04:00.0: GPU lockup (current fence id 0x000000000001f412 last fence id 0x000000000001f414 on ring 3)
radeon 0000:04:00.0: GPU lockup (current fence id 0x000000000000f940 last fence id 0x000000000000f941 on ring 0)
radeon 0000:04:00.0: scheduling IB failed (-35).
[drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA (-35)
radeon 0000:04:00.0: scheduling IB failed (-35).
[drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA (-35)
radeon 0000:04:00.0: scheduling IB failed (-35).
[drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA (-35)
radeon 0000:04:00.0: scheduling IB failed (-35).
[drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA (-35)
radeon 0000:04:00.0: scheduling IB failed (-35).
[drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA (-35)
radeon 0000:04:00.0: scheduling IB failed (-35).
[drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA (-35)
radeon 0000:04:00.0: scheduling IB failed (-35).
[drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA (-35)
Link: https://lore.kernel.org/dri-devel/29df7e26-d7a8-4f67-b988-44353c4270ac@amd.…
Link: https://lore.kernel.org/linux-arch/20240301130532.3953167-1-chenhuacai@loon…
Cc: stable(a)vger.kernel.org
Signed-off-by: Huacai Chen <chenhuacai(a)loongson.cn>
---
arch/loongarch/include/asm/Kbuild | 1 +
arch/loongarch/include/asm/io.h | 2 ++
arch/loongarch/include/asm/qspinlock.h | 18 ------------------
3 files changed, 3 insertions(+), 18 deletions(-)
delete mode 100644 arch/loongarch/include/asm/qspinlock.h
diff --git a/arch/loongarch/include/asm/Kbuild b/arch/loongarch/include/asm/Kbuild
index a97c0edbb866a..2dbec7853ae86 100644
--- a/arch/loongarch/include/asm/Kbuild
+++ b/arch/loongarch/include/asm/Kbuild
@@ -6,6 +6,7 @@ generic-y += mcs_spinlock.h
generic-y += parport.h
generic-y += early_ioremap.h
generic-y += qrwlock.h
+generic-y += qspinlock.h
generic-y += rwsem.h
generic-y += segment.h
generic-y += user.h
diff --git a/arch/loongarch/include/asm/io.h b/arch/loongarch/include/asm/io.h
index c486c2341b662..4a8adcca329b8 100644
--- a/arch/loongarch/include/asm/io.h
+++ b/arch/loongarch/include/asm/io.h
@@ -71,6 +71,8 @@ extern void __memcpy_fromio(void *to, const volatile void __iomem *from, size_t
#define memcpy_fromio(a, c, l) __memcpy_fromio((a), (c), (l))
#define memcpy_toio(c, a, l) __memcpy_toio((c), (a), (l))
+#define __io_aw() mmiowb()
+
#include <asm-generic/io.h>
#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
diff --git a/arch/loongarch/include/asm/qspinlock.h b/arch/loongarch/include/asm/qspinlock.h
deleted file mode 100644
index 34f43f8ad5912..0000000000000
--- a/arch/loongarch/include/asm/qspinlock.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_QSPINLOCK_H
-#define _ASM_QSPINLOCK_H
-
-#include <asm-generic/qspinlock_types.h>
-
-#define queued_spin_unlock queued_spin_unlock
-
-static inline void queued_spin_unlock(struct qspinlock *lock)
-{
- compiletime_assert_atomic_type(lock->locked);
- c_sync();
- WRITE_ONCE(lock->locked, 0);
-}
-
-#include <asm-generic/qspinlock.h>
-
-#endif /* _ASM_QSPINLOCK_H */
--
2.43.0