Commit Graph

33509 Commits

Author SHA1 Message Date
Lijo Lazar
3580440308 drm/amd/pm: Fix comment style
Fix code comment style

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202504271422.D6cqMlZ0-lkp@intel.com/
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:15:03 -04:00
Lijo Lazar
cf1fcdeec4 drm/amdgpu: Print bootloader status for long waits
If it needs a long wait for completion of bootloader execution, report
the status in between. That helps to know if there is some issue during
bootloader execution.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:14:58 -04:00
Yifan Zha
161949dd71 drm/amdgpu: refine MES register print for devices of hive
[Why]
Register access print missed device info.

[How]
Using dev_xxx instead of DRM_xxx to indicate which device
of a hive is the message for.

Signed-off-by: Yifan Zha <Yifan.Zha@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:14:47 -04:00
Lijo Lazar
3805e6959c drm/amdgpu: Fix query order of XGMI v6.4.1 status
Keep the register offsets as per link order for querying XGMI v6.4.1
link status.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Mangesh Gadre <Mangesh.Gadre@amd.com>
Fixes: 6dee64e765 ("drm/amdgpu: Fix xgmi v6.4.1 link status reporting")
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:13:44 -04:00
Asad Kamal
96ac487c12 drm/amd/pm: Add board voltage node to hwmon
Add and expose board voltage node as vddboard to hwmon for smu_v13_0_6

v2: Replace ip check with supported sensor attribute(Lijo)

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:13:40 -04:00
Jesse.Zhang
ad7c088e31 drm/amdgpu: Fix API status offset for MES queue reset
The mes_v11_0_reset_hw_queue and mes_v12_0_reset_hw_queue functions were
using the wrong union type (MESAPI__REMOVE_QUEUE) when getting the offset
for api_status. Since these functions handle queue reset operations, they
should use MESAPI__RESET union instead.

This fixes the polling of API status during hardware queue reset operations
in the MES for both v11 and v12 versions.

Signed-off-by: Jesse Zhang <jesse.zhang@amd.com>
Reviewed-By: Shaoyun.liu <Shaoyun.liu@amd.com>
Reviewed-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:10:06 -04:00
Asad Kamal
3a2191efe4 drm/amd/pm: Add voltage caps for smu_v13_0_6
Add & enable board voltage caps for smu_v13_0_6

v3: Update version check for board voltage support

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:10:02 -04:00
Asad Kamal
ad3d93230d drm/amd/pm: Fill static metrics data
Fill static metrics data for smu_v13_0_6

v2: Proceed with driver load just with warning even if board
voltage reads invalid value

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:09:54 -04:00
Asad Kamal
0ee5847849 drm/amd/pm: Use common function to fetch static metrics table
Use common function to fetch static metrics table for smu_v13_0_12

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:09:50 -04:00
Asad Kamal
9eddfcbef4 drm/amd/pn: Fetch static metrics table
Fetch static metrics table for smu_v13_0_6

v2: Add static metrics caps check to fetch static metrics table

v3: Update version having all fixes for static metrics support

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:09:45 -04:00
Asad Kamal
a2344a9827 drm/amd/pm: Update pmfw headers for smu_v_13_0_6
Update pmfw headers for smu_v_13_0_6 to include static metrics table

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:09:42 -04:00
Alex Deucher
482d485332 drm/amdgpu/userq: take the userq_mgr lock in enforce isolation
Add the missing locking.

Fixes: 94976e7e5e ("drm/amdgpu/userq: add helpers to start/stop scheduling")
Reviewed-by: Arvind Yadav <Arvind.Yadav@amd.com>
Reviewed-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:09:26 -04:00
Alex Deucher
c5e02d6588 drm/amdgpu/userq: take the userq_mgr lock in suspend/resume
Add the missing locking.

Fixes: 73e12e98ec ("drm/amdgpu/userq: add suspend and resume helpers")
Reviewed-by: Arvind Yadav <Arvind.Yadav@amd.com>
Reviewed-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:08:24 -04:00
Sonny Jiang
3e5f86c14c drm/amdgpu: Add DPG pause for VCN v5.0.1
For vcn5.0.1 only, enable DPG PAUSE to avoid DPG resets.

Signed-off-by: Sonny Jiang <sonny.jiang@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:08:21 -04:00
Asad Kamal
b02a284cc8 drm/amd/pm: Add ip version check for smu_v13_0_12 functions
Add ip version check to use smu_v13_0_12 specific functions

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:08:16 -04:00
Aurabindo Pillai
d85212e1ce drm/amd/display: downgrade HDMI infoframe error to one time warning
In certain config, a modeprobe test triggers too many instances of the
error related to infoframe. Make it print only once, and also make it a
warning.

Fixes: 6027cbee19 ("drm/amd/display: Add error check for avi and vendor infoframe setup function")
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Chengjun Yao <Chengjun.Yao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:06:19 -04:00
Eric Huang
7295e00df0 drm/amdkfd: add pasid debugfs entries
the entries will be appearing at
/sys/kernel/debug/kfd/proc/<pid>/pasid_<gpuid>.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:06:14 -04:00
Arvind Yadav
56801cb83c drm/amdgpu: remove DRM_AMDGPU_NAVI3X_USERQ config for UQ
DRM_AMDGPU_NAVI3X_USERQ config support is not required for
usermode queue.

v2: rebase.

Cc: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Reviewed-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Arvind Yadav <Arvind.Yadav@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:06:00 -04:00
Srinivasan Shanmugam
716ad3c28f drm/amd/display: Fix NULL pointer dereference for program_lut_mode in dcn401_populate_mcm_luts
This commit introduces a NULL pointer check for
mpc->funcs->program_lut_mode in the dcn401_populate_mcm_luts function.
The previous implementation directly called program_lut_mode without
validating its existence, which could lead to a NULL pointer
dereference.

With this change, the function is now only invoked if
mpc->funcs->program_lut_mode is not NULL

Fixes the below:

drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn401/dcn401_hwseq.c:720 dcn401_populate_mcm_luts()
error: we previously assumed 'mpc->funcs->program_lut_mode' could be null (see line 701)

drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn401/dcn401_hwseq.c
    642 void dcn401_populate_mcm_luts(struct dc *dc,
    643                 struct pipe_ctx *pipe_ctx,
    644                 struct dc_cm2_func_luts mcm_luts,
    645                 bool lut_bank_a)
    646 {
	...
    716                 }
    717                 if (m_lut_params.pwl) {
    718                         if (mpc->funcs->mcm.populate_lut)
    719                                 mpc->funcs->mcm.populate_lut(mpc, m_lut_params, lut_bank_a, mpcc_id);
--> 720                         mpc->funcs->program_lut_mode(mpc, MCM_LUT_SHAPER, MCM_LUT_ENABLE, lut_bank_a, mpcc_id);

Cc: Yihan Zhu <yihanzhu@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Cc: Tom Chung <chiahsuan.chung@amd.com>
Cc: Roman Li <roman.li@amd.com>
Cc: Alex Hung <alex.hung@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Yihan Zhu <yihanzhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:52 -04:00
Amber Lin
ab9fcc6362 drm/amdkfd: Set SDMA_RLCx_IB_CNTL/SWITCH_INSIDE_IB
When submitting MQD to CP, set SDMA_RLCx_IB_CNTL/SWITCH_INSIDE_IB bit so
it'll allow SDMA preemption if there is a massive command buffer of
long-running SDMA commands.

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:46 -04:00
Rodrigo Siqueira
ffc7e11c10 drm/amdgpu: Add documentation associated with CSB
Add a description for the get_csb_buffer callback, update the glossary,
and add some extra information about RB, which is associated with CSB
configuration.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:41 -04:00
Rodrigo Siqueira
e7164c7ade drm/amdgpu/gfx: Use CSB helpers in gfx_v6_0_get_csb_buffer
Remove duplications from gfx_v6_0_get_csb_buffer by using CSB helpers.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:38 -04:00
Rodrigo Siqueira
aff78a6172 drm/amdgpu/gfx: Fix gfx_v7_0_get_csb_buffer to use rb_config
Instead of having the hardcoded values for the CSB buffer in
gfx_v7_0_get_csb_buffer, use the values calculated in previous steps by
accessing raster_config and raster_config_1.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:34 -04:00
Prike Liang
e125a6e8ce drm/amdgpu: set the evf name to identify the userq case
The evf fence name can clearly identify the userq usage.

Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Arvind Yadav <Arvind.Yadav@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:27 -04:00
Lijo Lazar
d8116a32cd drm/amdgpu: Fix offset for HDP remap in nbio v7.11
APUs in passthrough mode use HDP flush. 0x7F000 offset used for
remapping HDP flush is mapped to VPE space which could get power gated.
Use another unused offset in BIF space.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:14 -04:00
Lijo Lazar
923406e74e drm/amd/pm: Reset SMU v13.0.x custom settings
On SMU v13.0.2 and SMU v13.0.6 variants user may choose custom min/max
clocks in manual perf mode. Those custom min/max values need to be
reset once user switches to auto or restores default settings.
Otherwise, they may get used inadvertently during the next operation.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:11 -04:00
Prike Liang
9d40b05d6d drm/amdgpu: add the evf attached gem obj resv dump
This debug dump will help on debugging the evf attached gem obj fence
related issue.

Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Arvind Yadav <Arvind.Yadav@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:07 -04:00
Felix Kuehling
dbe4c63689 drm/amdgpu: Fail DMABUF map of XGMI-accessible memory
If peer memory is XGMI-accessible, we should never access it through PCIe
P2P DMA mappings. PCIe P2P is slower, has different coherence behaviour,
limited or no support for atomics, or may not work at all. Fail with a
warning if DMABUF mappings of such memory are attempted.

Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:05:02 -04:00
Rodrigo Siqueira
9bd5a47ee2 drm/amdgpu/gfx: Use CSB helpers in gfx_v7_0_get_csb_buffer
Use CSB helpers to remove code duplication from gfx_v7_0_get_csb_buffer.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:04:48 -04:00
Rodrigo Siqueira
b990cb5234 drm/amdgpu/gfx: Use CSB helpers in gfx_v8_0_get_csb_buffer
Remove code duplication from gfx_v8_0_get_csb_buffer by using CSB
helpers.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:04:45 -04:00
Rodrigo Siqueira
9fec2e92fa drm/amdgpu/gfx: Use CSB helpers in gfx_v9_0_get_csb_buffer
Eliminate code duplication in gfx_v9_0_get_csb_buffer by using CSB
helpers.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:04:42 -04:00
Rodrigo Siqueira
0eef0e36ba drm/amdgpu/gfx: Use CSB helpers in gfx_v10_0_get_csb_buffer
Remove duplicate code by using CSB helpers.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:04:38 -04:00
Rodrigo Siqueira
106172df6e drm/amdgpu/gfx: Use CSB helpers in gfx_v11_0_get_csb_buffer
Part of the code in gfx_v11_0_get_csb_buffer can be removed in favor of
some GFX CSB helpers. This commit removes the duplicated part for the
GFX 11 CSB function.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:04:34 -04:00
Rodrigo Siqueira
9718f7457d drm/amdgpu/gfx: Introduce helpers handling CSB manipulation
From GFX6 to GFX11, there is a function for getting the CSB buffer to be
put into the hardware. Three common parts are duplicated in all of these
GFX functions:

1. Prepare the CSB preamble.
2. Parser the CS data.
3. End the CSB preamble.

This commit creates helpers to be used from GFX6 to GFX11.

Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:04:29 -04:00
Colin Ian King
5a2658fda4 drm/amdgpu: Fix spelling mistake "rounter" -> "router"
There is a spelling mistake with the array utcl2_rounter_str, it
appears it should be utcl2_router_str. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:04:23 -04:00
Kees Cook
e5f7e4e0a4 drm/amdgpu/atom: Work around vbios NULL offset false positive
GCC really does not want to consider NULL (or near-NULL) addresses as
valid, so calculations based off of NULL end up getting range-tracked into
being an offset wthin a 0 byte array. It gets especially mad about this:

                if (vbios_str == NULL)
                        vbios_str += sizeof(BIOS_ATOM_PREFIX) - 1;
	...
        if (vbios_str != NULL && *vbios_str == 0)
                vbios_str++;

It sees this as being "sizeof(BIOS_ATOM_PREFIX) - 1" byte offset from
NULL, when building with -Warray-bounds (and the coming
-fdiagnostic-details flag):

In function 'atom_get_vbios_pn',
    inlined from 'amdgpu_atom_parse' at drivers/gpu/drm/amd/amdgpu/atom.c:1553:2:
drivers/gpu/drm/amd/amdgpu/atom.c:1447:34: error: array subscript 0 is outside array bounds of 'unsigned char[0]' [-Werror=array-bounds=]
 1447 |         if (vbios_str != NULL && *vbios_str == 0)
      |                                  ^~~~~~~~~~
  'amdgpu_atom_parse': events 1-2
 1444 |                 if (vbios_str == NULL)
      |                    ^
      |                    |
      |                    (1) when the condition is evaluated to true
......
 1447 |         if (vbios_str != NULL && *vbios_str == 0)
      |                                  ~~~~~~~~~~
      |                                  |
      |                                  (2) out of array bounds here
In function 'amdgpu_atom_parse':
cc1: note: source object is likely at address zero

As there isn't a sane way to convince it otherwise, hide vbios_str from
GCC's optimizer to avoid the warning so we can get closer to enabling
-Warray-bounds globally.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Kees Cook <kees@kernel.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:04:12 -04:00
Chris Bainbridge
d4673f3c3b drm/amd/display: Fix slab-use-after-free in hdcp
The HDCP code in amdgpu_dm_hdcp.c copies pointers to amdgpu_dm_connector
objects without incrementing the kref reference counts. When using a
USB-C dock, and the dock is unplugged, the corresponding
amdgpu_dm_connector objects are freed, creating dangling pointers in the
HDCP code. When the dock is plugged back, the dangling pointers are
dereferenced, resulting in a slab-use-after-free:

[   66.775837] BUG: KASAN: slab-use-after-free in event_property_validate+0x42f/0x6c0 [amdgpu]
[   66.776171] Read of size 4 at addr ffff888127804120 by task kworker/0:1/10

[   66.776179] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.14.0-rc7-00180-g54505f727a38-dirty #233
[   66.776183] Hardware name: HP HP Pavilion Aero Laptop 13-be0xxx/8916, BIOS F.17 12/18/2024
[   66.776186] Workqueue: events event_property_validate [amdgpu]
[   66.776494] Call Trace:
[   66.776496]  <TASK>
[   66.776497]  dump_stack_lvl+0x70/0xa0
[   66.776504]  print_report+0x175/0x555
[   66.776507]  ? __virt_addr_valid+0x243/0x450
[   66.776510]  ? kasan_complete_mode_report_info+0x66/0x1c0
[   66.776515]  kasan_report+0xeb/0x1c0
[   66.776518]  ? event_property_validate+0x42f/0x6c0 [amdgpu]
[   66.776819]  ? event_property_validate+0x42f/0x6c0 [amdgpu]
[   66.777121]  __asan_report_load4_noabort+0x14/0x20
[   66.777124]  event_property_validate+0x42f/0x6c0 [amdgpu]
[   66.777342]  ? __lock_acquire+0x6b40/0x6b40
[   66.777347]  ? enable_assr+0x250/0x250 [amdgpu]
[   66.777571]  process_one_work+0x86b/0x1510
[   66.777575]  ? pwq_dec_nr_in_flight+0xcf0/0xcf0
[   66.777578]  ? assign_work+0x16b/0x280
[   66.777580]  ? lock_is_held_type+0xa3/0x130
[   66.777583]  worker_thread+0x5c0/0xfa0
[   66.777587]  ? process_one_work+0x1510/0x1510
[   66.777588]  kthread+0x3a2/0x840
[   66.777591]  ? kthread_is_per_cpu+0xd0/0xd0
[   66.777594]  ? trace_hardirqs_on+0x4f/0x60
[   66.777597]  ? _raw_spin_unlock_irq+0x27/0x60
[   66.777599]  ? calculate_sigpending+0x77/0xa0
[   66.777602]  ? kthread_is_per_cpu+0xd0/0xd0
[   66.777605]  ret_from_fork+0x40/0x90
[   66.777607]  ? kthread_is_per_cpu+0xd0/0xd0
[   66.777609]  ret_from_fork_asm+0x11/0x20
[   66.777614]  </TASK>

[   66.777643] Allocated by task 10:
[   66.777646]  kasan_save_stack+0x39/0x60
[   66.777649]  kasan_save_track+0x14/0x40
[   66.777652]  kasan_save_alloc_info+0x37/0x50
[   66.777655]  __kasan_kmalloc+0xbb/0xc0
[   66.777658]  __kmalloc_cache_noprof+0x1c8/0x4b0
[   66.777661]  dm_dp_add_mst_connector+0xdd/0x5c0 [amdgpu]
[   66.777880]  drm_dp_mst_port_add_connector+0x47e/0x770 [drm_display_helper]
[   66.777892]  drm_dp_send_link_address+0x1554/0x2bf0 [drm_display_helper]
[   66.777901]  drm_dp_check_and_send_link_address+0x187/0x1f0 [drm_display_helper]
[   66.777909]  drm_dp_mst_link_probe_work+0x2b8/0x410 [drm_display_helper]
[   66.777917]  process_one_work+0x86b/0x1510
[   66.777919]  worker_thread+0x5c0/0xfa0
[   66.777922]  kthread+0x3a2/0x840
[   66.777925]  ret_from_fork+0x40/0x90
[   66.777927]  ret_from_fork_asm+0x11/0x20

[   66.777932] Freed by task 1713:
[   66.777935]  kasan_save_stack+0x39/0x60
[   66.777938]  kasan_save_track+0x14/0x40
[   66.777940]  kasan_save_free_info+0x3b/0x60
[   66.777944]  __kasan_slab_free+0x52/0x70
[   66.777946]  kfree+0x13f/0x4b0
[   66.777949]  dm_dp_mst_connector_destroy+0xfa/0x150 [amdgpu]
[   66.778179]  drm_connector_free+0x7d/0xb0
[   66.778184]  drm_mode_object_put.part.0+0xee/0x160
[   66.778188]  drm_mode_object_put+0x37/0x50
[   66.778191]  drm_atomic_state_default_clear+0x220/0xd60
[   66.778194]  __drm_atomic_state_free+0x16e/0x2a0
[   66.778197]  drm_mode_atomic_ioctl+0x15ed/0x2ba0
[   66.778200]  drm_ioctl_kernel+0x17a/0x310
[   66.778203]  drm_ioctl+0x584/0xd10
[   66.778206]  amdgpu_drm_ioctl+0xd2/0x1c0 [amdgpu]
[   66.778375]  __x64_sys_ioctl+0x139/0x1a0
[   66.778378]  x64_sys_call+0xee7/0xfb0
[   66.778381]  do_syscall_64+0x87/0x140
[   66.778385]  entry_SYSCALL_64_after_hwframe+0x4b/0x53

Fix this by properly incrementing and decrementing the reference counts
when making and deleting copies of the amdgpu_dm_connector pointers.

(Mario: rebase on current code and update fixes tag)

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4006
Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com>
Fixes: da3fd7ac0b ("drm/amd/display: Update CP property based on HW query")
Reviewed-by: Alex Hung <alex.hung@amd.com>
Link: https://lore.kernel.org/r/20250417215005.37964-1-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:03:08 -04:00
Lijo Lazar
75f138db48 drm/amdgpu: Disallow partition query during reset
Reject queries to get current partition modes during reset. Also, don't
accept sysfs interface requests to switch compute partition mode while
in reset.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:03:02 -04:00
Srinivasan Shanmugam
af0819755c drm/amd/display: Fix NULL pointer dereferences in dm_update_crtc_state() v2
Added checks for NULL values after retrieving drm_new_conn_state
to prevent dereferencing NULL pointers.

Fixes the below:
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:10751 dm_update_crtc_state()
	warn: 'drm_new_conn_state' can also be NULL

drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c
    10672 static int dm_update_crtc_state(struct amdgpu_display_manager *dm,
    10673                          struct drm_atomic_state *state,
    10674                          struct drm_crtc *crtc,
    10675                          struct drm_crtc_state *old_crtc_state,
    10676                          struct drm_crtc_state *new_crtc_state,
    10677                          bool enable,
    10678                          bool *lock_and_validation_needed)
    10679 {
    10680         struct dm_atomic_state *dm_state = NULL;
    10681         struct dm_crtc_state *dm_old_crtc_state, *dm_new_crtc_state;
    10682         struct dc_stream_state *new_stream;
    10683         int ret = 0;
    10684
    ...
    10703
    10704         /* TODO This hack should go away */
    10705         if (connector && enable) {
    10706                 /* Make sure fake sink is created in plug-in scenario */
    10707                 drm_new_conn_state = drm_atomic_get_new_connector_state(state,
    10708                                                                         connector);

drm_atomic_get_new_connector_state() can't return error pointers, only NULL.

    10709                 drm_old_conn_state = drm_atomic_get_old_connector_state(state,
    10710                                                                         connector);
    10711
    10712                 if (IS_ERR(drm_new_conn_state)) {
                                     ^^^^^^^^^^^^^^^^^^

    10713                         ret = PTR_ERR_OR_ZERO(drm_new_conn_state);

Calling PTR_ERR_OR_ZERO() doesn't make sense.  It can't be success.

    10714                         goto fail;
    10715                 }
    10716
    ...
    10748
    10749                 dm_new_crtc_state->abm_level = dm_new_conn_state->abm_level;
    10750
--> 10751                 ret = fill_hdr_info_packet(drm_new_conn_state,
                                                     ^^^^^^^^^^^^^^^^^^ Unchecked dereference

    10752                                            &new_stream->hdr_static_metadata);
    10753                 if (ret)
    10754                         goto fail;
    10755

v2: Modified the NULL pointer check for drm_new_conn_state in the
    dm_update_crtc_state function to  include a warning via WARN_ON and
    return -EINVAL to indicate an invalid state when the pointer is NULL.

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Cc: Tom Chung <chiahsuan.chung@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Roman Li <roman.li@amd.com>
Cc: Alex Hung <alex.hung@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-30 18:02:52 -04:00
Gergo Koteles
b316727a27 drm/amd/display: do not copy invalid CRTC timing info
Since b255ce4388, it is possible that the CRTC timing
information for the preferred mode has not yet been
calculated while amdgpu_dm_connector_mode_valid() is running.

In this case use the CRTC timing information of the actual mode.

Fixes: b255ce4388 ("drm/amdgpu: don't change mode in amdgpu_dm_connector_mode_valid()")
Closes: https://lore.kernel.org/all/ed09edb167e74167a694f4854102a3de6d2f1433.camel@irl.hu/
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4085
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Reviewed-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 20232192a5)
Cc: stable@vger.kernel.org
2025-04-22 16:51:17 -04:00
Leo Li
6ed0dc3fd3 drm/amd/display: Default IPS to RCG_IN_ACTIVE_IPS2_IN_OFF
[Why]

Recent findings show negligible power savings between IPS2 and RCG
during static desktop. In fact, DCN related clocks are higher
when IPS2 is enabled vs RCG.

RCG_IN_ACTIVE is also the default policy for another OS supported by
DC, and it has faster entry/exit.

[How]

Remove previous logic that checked for IPS2 support, and just default
to `DMUB_IPS_RCG_IN_ACTIVE_IPS2_IN_OFF`.

Fixes: 199888aa25 ("drm/amd/display: Update IPS default mode for DCN35/DCN351")
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 8f772d79ef)
Cc: stable@vger.kernel.org
2025-04-22 16:50:45 -04:00
George Shen
d59bddce49 drm/amd/display: Use 16ms AUX read interval for LTTPR with old sinks
[Why/How]
LTTPR are required to program DPCD 0000Eh to 0x4 (16ms) upon AUX read
reply to this register. Since old Sinks witih DPCD rev 1.1 and earlier
may not support this register, assume the mandatory value is programmed
by the LTTPR to avoid AUX timeout issues.

Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 1594b60d74)
2025-04-22 16:49:15 -04:00
Mario Limonciello
870bea21fd drm/amd/display: Fix ACPI edid parsing on some Lenovo systems
[Why]
The ACPI EDID in the BIOS of a Lenovo laptop includes 3 blocks, but
dm_helpers_probe_acpi_edid() has a start that is 'char'.  The 3rd
block index starts after 255, so it can't be indexed properly.
This leads to problems with the display when the EDID is parsed.

[How]
Change the variable type to 'short' so that larger values can be indexed.

Cc: Renjith Pananchikkal <renjith.pananchikkal@amd.com>
Reported-by: Mark Pearson <mpearson@lenovo.com>
Suggested-by: David Ober <dober@lenovo.com>
Fixes: c6a837088b ("drm/amd/display: Fetch the EDID from _DDC if available for eDP")
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a918bb4a90)
Cc: stable@vger.kernel.org
2025-04-22 16:48:44 -04:00
Felix Kuehling
a92741e72f drm/amdgpu: Allow P2P access through XGMI
If peer memory is accessible through XGMI, allow leaving it in VRAM
rather than forcing its migration to GTT on DMABuf attachment.

Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Tested-by: Hao (Claire) Zhou <hao.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 372c8d72c3)
2025-04-22 16:47:12 -04:00
Nicholas Susanto
756c85e4d0 drm/amd/display: Enable urgent latency adjustment on DCN35
[Why]

Urgent latency adjustment was disabled on DCN35 due to issues with P0
enablement on some platforms. Without urgent latency, underflows occur
when doing certain high timing configurations. After testing, we found
that reenabling urgent latency didn't reintroduce p0 support on multiple
platforms.

[How]

renable urgent latency on DCN35 and setting it to 3000 Mhz.

This reverts commit 3412860cc4.

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Nicholas Susanto <nsusanto@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit cd74ce1f0c)
2025-04-22 16:46:34 -04:00
Roman Li
67fe574651 drm/amd/display: Force full update in gpu reset
[Why]
While system undergoing gpu reset always do full update
to sync the dc state before and after reset.

[How]
Return true in should_reset_plane() if gpu reset detected

Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 2ba8619b9a)
Cc: stable@vger.kernel.org
2025-04-22 16:45:50 -04:00
Roman Li
7eb287beeb drm/amd/display: Fix gpu reset in multidisplay config
[Why]
The indexing of stream_status in dm_gpureset_commit_state() is incorrect.
That leads to asserts in multi-display configuration after gpu reset.

[How]
Adjust the indexing logic to align stream_status with surface_updates.

Fixes: cdaae8371a ("drm/amd/display: Handle GPU reset for DC block")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3808
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit d91bc90139)
Cc: stable@vger.kernel.org
2025-04-22 16:45:10 -04:00
Felix Kuehling
5e56935b51 drm/amdgpu: Don't pin VRAM without DMABUF_MOVE_NOTIFY
Pinning of VRAM is for peer devices that don't support dynamic attachment
and move notifiers. But it requires that all such peer devices are able to
access VRAM via PCIe P2P. Any device without P2P access requires migration
to GTT, which fails if the memory is already pinned for another peer
device.

Sharing between GPUs should not require pinning in VRAM. However, if
DMABUF_MOVE_NOTIFY is disabled in the kernel build, even DMABufs shared
between GPUs must be pinned, which can lead to failures and functional
regressions on systems where some peer GPUs are not P2P accessible.

Disable VRAM pinning if move notifiers are disabled in the kernel build
to fix regressions when sharing BOs between GPUs.

Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Tested-by: Hao (Claire) Zhou <hao.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 05185812ae)
2025-04-22 16:44:28 -04:00
Felix Kuehling
5cf3c602df drm/amdgpu: Use allowed_domains for pinning dmabufs
When determining the domains for pinning DMABufs, filter allowed_domains
and fail with a warning if VRAM is forbidden and GTT is not an allowed
domain.

Fixes: f5e7fabd1f ("drm/amdgpu: allow pinning DMA-bufs into VRAM if all importers can do P2P")
Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3940796a6e)
2025-04-22 16:44:02 -04:00
Sunil Khatri
127e612bf1 drm/amdgpu: update fence ptr with context:seqno
log context:seqno of the fence during timeout rather
than logging fence pointer.

Reviewed-by: Arvind Yadav <Arvind.Yadav@amd.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-04-22 08:51:46 -04:00