From: Nicholas Kazlauskas <nicholas.kazlauskas(a)amd.com>
[Why]
Idle optimizations are blocked if there's more than one eDP connector
on the board - blocking S0i3 and IPS2 for static screen.
[How]
Fix the checks to correctly detect number of active eDP.
Also restrict the eDP support to panels that have correct feature
support.
Cc: Mario Limonciello <mario.limonciello(a)amd.com>
Cc: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)vger.kernel.org
Reviewed-by: Charlene Liu <charlene.liu(a)amd.com>
Acked-by: Tom Chung <chiahsuan.chung(a)amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas(a)amd.com>
---
.../amd/display/dc/hwss/dcn35/dcn35_hwseq.c | 33 +++++++++++++++----
1 file changed, 27 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
index 1c71a5d4ac5d..bddcd23a2727 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
@@ -660,22 +660,43 @@ void dcn35_power_down_on_boot(struct dc *dc)
bool dcn35_apply_idle_power_optimizations(struct dc *dc, bool enable)
{
- struct dc_link *edp_links[MAX_NUM_EDP];
- int i, edp_num;
if (dc->debug.dmcub_emulation)
return true;
if (enable) {
- dc_get_edp_links(dc, edp_links, &edp_num);
- if (edp_num == 0 || edp_num > 1)
- return false;
+ uint32_t num_active_edp = 0;
+ int i;
for (i = 0; i < dc->current_state->stream_count; ++i) {
struct dc_stream_state *stream = dc->current_state->streams[i];
+ struct dc_link *link = stream->link;
+ bool is_psr = link && !link->panel_config.psr.disable_psr &&
+ (link->psr_settings.psr_version == DC_PSR_VERSION_1 ||
+ link->psr_settings.psr_version == DC_PSR_VERSION_SU_1);
+ bool is_replay = link && link->replay_settings.replay_feature_enabled;
+
+ /* Ignore streams that disabled. */
+ if (stream->dpms_off)
+ continue;
+
+ /* Active external displays block idle optimizations. */
+ if (!dc_is_embedded_signal(stream->signal))
+ return false;
+
+ /* If not PWRSEQ0 can't enter idle optimizations */
+ if (link && link->link_index != 0)
+ return false;
- if (!stream->dpms_off && !dc_is_embedded_signal(stream->signal))
+ /* Check for panel power features required for idle optimizations. */
+ if (!is_psr && !is_replay)
return false;
+
+ num_active_edp += 1;
}
+
+ /* If more than one active eDP then disallow. */
+ if (num_active_edp > 1)
+ return false;
}
// TODO: review other cases when idle optimization is allowed
--
2.34.1
From: Vitaly Lifshits <vitaly.lifshits(a)intel.com>
This is a partial revert of commit 6dbdd4de0362 ("e1000e: Workaround
for sporadic MDI error on Meteor Lake systems"). The referenced commit
used usleep_range inside the PHY access routines, which are sometimes
called from an atomic context. This can lead to a kernel panic in some
scenarios, such as cable disconnection and reconnection on vPro systems.
Solve this by changing the usleep_range calls back to udelay.
Fixes: 6dbdd4de0362 ("e1000e: Workaround for sporadic MDI error on Meteor Lake systems")
Cc: stable(a)vger.kernel.org
Reported-by: Jérôme Carretero <cJ(a)zougloub.eu>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218740
Closes: https://lore.kernel.org/lkml/a7eb665c74b5efb5140e6979759ed243072cb24a.camel…
Co-developed-by: Sasha Neftin <sasha.neftin(a)intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin(a)intel.com>
Signed-off-by: Vitaly Lifshits <vitaly.lifshits(a)intel.com>
Tested-by: Dima Ruinskiy <dima.ruinskiy(a)intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen(a)intel.com>
---
drivers/net/ethernet/intel/e1000e/phy.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/intel/e1000e/phy.c b/drivers/net/ethernet/intel/e1000e/phy.c
index 93544f1cc2a5..f7ae0e0aa4a4 100644
--- a/drivers/net/ethernet/intel/e1000e/phy.c
+++ b/drivers/net/ethernet/intel/e1000e/phy.c
@@ -157,7 +157,7 @@ s32 e1000e_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data)
* the lower time out
*/
for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
- usleep_range(50, 60);
+ udelay(50);
mdic = er32(MDIC);
if (mdic & E1000_MDIC_READY)
break;
@@ -181,7 +181,7 @@ s32 e1000e_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data)
* reading duplicate data in the next MDIC transaction.
*/
if (hw->mac.type == e1000_pch2lan)
- usleep_range(100, 150);
+ udelay(100);
if (success) {
*data = (u16)mdic;
@@ -237,7 +237,7 @@ s32 e1000e_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data)
* the lower time out
*/
for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
- usleep_range(50, 60);
+ udelay(50);
mdic = er32(MDIC);
if (mdic & E1000_MDIC_READY)
break;
@@ -261,7 +261,7 @@ s32 e1000e_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data)
* reading duplicate data in the next MDIC transaction.
*/
if (hw->mac.type == e1000_pch2lan)
- usleep_range(100, 150);
+ udelay(100);
if (success)
return 0;
--
2.41.0
To be secure, when a userptr is invalidated the pages should be dma
unmapped ensuring the device can no longer touch the invalidated pages.
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Fixes: 12f4b58a37f4 ("drm/xe: Use hmm_range_fault to populate user pages")
Cc: Thomas Hellström <thomas.hellstrom(a)linux.intel.com>
Cc: stable(a)vger.kernel.org # 6.8
Signed-off-by: Matthew Brost <matthew.brost(a)intel.com>
---
drivers/gpu/drm/xe/xe_vm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index dfd31b346021..964a5b4d47d8 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -637,6 +637,9 @@ static bool vma_userptr_invalidate(struct mmu_interval_notifier *mni,
XE_WARN_ON(err);
}
+ if (userptr->sg)
+ xe_hmm_userptr_free_sg(uvma);
+
trace_xe_vma_userptr_invalidate_complete(vma);
return true;
--
2.34.1