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linux/drivers/gpu/drm/amd/display/amdgpu_dm
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Perry Yuan 2da34b7bb5 drm/amd/display: add connector type check for CRC source set 
[Why]
IGT bypass test will set crc source as DPRX,and display DM didn`t check
connection type, it run the test on the HDMI connector ,then the kernel
will be crashed because aux->transfer is set null for HDMI connection.
This patch will skip the invalid connection test and fix kernel crash issue.

[How]
Check the connector type while setting the pipe crc source as DPRX or
auto,if the type is not DP or eDP, the crtc crc source will not be set
and report error code to IGT test,IGT will show the this subtest as no
valid crtc/connector combinations found.

116.779714] [IGT] amd_bypass: starting subtest 8bpc-bypass-mode
[ 117.730996] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 117.731001] #PF: supervisor instruction fetch in kernel mode
[ 117.731003] #PF: error_code(0x0010) - not-present page
[ 117.731004] PGD 0 P4D 0
[ 117.731006] Oops: 0010 [#1] SMP NOPTI
[ 117.731009] CPU: 11 PID: 2428 Comm: amd_bypass Tainted: G OE 5.11.0-34-generic #36~20.04.1-Ubuntu
[ 117.731011] Hardware name: AMD CZN/, BIOS AB.FD 09/07/2021
[ 117.731012] RIP: 0010:0x0
[ 117.731015] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
[ 117.731016] RSP: 0018:ffffa8d64225bab8 EFLAGS: 00010246
[ 117.731017] RAX: 0000000000000000 RBX: 0000000000000020 RCX: ffffa8d64225bb5e
[ 117.731018] RDX: ffff93151d921880 RSI: ffffa8d64225bac8 RDI: ffff931511a1a9d8
[ 117.731022] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 117.731023] CR2: ffffffffffffffd6 CR3: 000000010d5a4000 CR4: 0000000000750ee0
[ 117.731023] PKRU: 55555554
[ 117.731024] Call Trace:
[ 117.731027] drm_dp_dpcd_access+0x72/0x110 [drm_kms_helper]
[ 117.731036] drm_dp_dpcd_read+0xb7/0xf0 [drm_kms_helper]
[ 117.731040] drm_dp_start_crc+0x38/0xb0 [drm_kms_helper]
[ 117.731047] amdgpu_dm_crtc_set_crc_source+0x1ae/0x3e0 [amdgpu]
[ 117.731149] crtc_crc_open+0x174/0x220 [drm]
[ 117.731162] full_proxy_open+0x168/0x1f0
[ 117.731165] ? open_proxy_open+0x100/0x100

BugLink: https://gitlab.freedesktop.org/drm/amd/-/issues/1546
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-12-01 17:08:47 -05:00
..
amdgpu_dm.c drm/amd/display: update bios scratch when setting backlight 2021-11-24 15:14:36 -05:00
amdgpu_dm.h drm/amd/display: Support for SET_CONFIG processing with DMUB 2021-10-06 15:52:30 -04:00
amdgpu_dm_color.c drm/amd/display: Verify Gamma & Degamma LUT sizes in amdgpu_dm_atomic_check 2021-06-11 16:16:07 -04:00
amdgpu_dm_crc.c drm/amd/display: add connector type check for CRC source set 2021-12-01 17:08:47 -05:00
amdgpu_dm_crc.h drm/amd/display: Refactor suspend/resume of Secure display 2021-05-19 22:39:16 -04:00
amdgpu_dm_debugfs.c drm/amd/display: Don't allow partial copy_from_user 2021-11-05 14:10:39 -04:00
amdgpu_dm_debugfs.h drm/amd/display: Support crc on specific region 2021-03-05 15:11:47 -05:00
amdgpu_dm_hdcp.c drm/amd/display: Fix for null pointer access for ddc pin and aux engine. 2021-09-14 15:57:09 -04:00
amdgpu_dm_hdcp.h drm/amdgpu/display: remove hdcp_srm sysfs on device removal 2021-02-18 16:43:08 -05:00
amdgpu_dm_helpers.c drm/amdgpu/display: fix build when CONFIG_DRM_AMD_DC_DCN is not set 2021-10-27 19:50:26 -04:00
amdgpu_dm_irq.c drm/amd/display: use GFP_ATOMIC in amdgpu_dm_irq_schedule_work 2021-08-09 15:44:09 -04:00
amdgpu_dm_irq.h drm/amd/display: Support for DMUB AUX 2021-05-10 18:06:44 -04:00
amdgpu_dm_irq_params.h drm/amd/display: Use vblank control events for PSR enable/disable 2021-08-16 15:35:56 -04:00
amdgpu_dm_mst_types.c drm/amd/display: Allow DSC on supported MST branch devices 2021-12-01 17:04:42 -05:00
amdgpu_dm_mst_types.h drm/amd/display: dsc mst 2 4K displays go dark with 2 lane HBR3 2021-09-14 15:57:10 -04:00
amdgpu_dm_pp_smu.c drm/amd/pm: make DAL communicate with SMU through unified interfaces 2021-04-09 16:42:37 -04:00
amdgpu_dm_psr.c drm/amd/display: dc_link_set_psr_allow_active refactoring 2021-10-28 14:26:14 -04:00
amdgpu_dm_psr.h drm/amd/display: Delay PSR entry 2021-06-21 17:45:14 -04:00
amdgpu_dm_services.c drm/amd/display: Decouple amdgpu_dm_trace from service 2020-10-26 13:33:59 -04:00
amdgpu_dm_trace.h drm/amd/display: Add control mechanism for FPU utilization 2021-08-05 21:17:59 -04:00
dc_fpu.c drm/amd/display: Re-arrange FPU code structure for dcn2x 2021-10-06 15:49:24 -04:00
dc_fpu.h drm/amd/display: Add DC_FP helper to check FPU state 2021-08-05 21:17:59 -04:00
Makefile drm/amd/display: Add control mechanism for FPU 2021-08-05 21:17:59 -04:00