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Message-ID: <a58abb00-f941-48e0-b2a0-3c401e5220a7@linaro.org>
Date: Tue, 1 Oct 2024 09:37:29 +0200
From: neil.armstrong@...aro.org
To: Jessica Zhang <quic_jesszhan@...cinc.com>, Rob Clark
<robdclark@...il.com>, Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
quic_abhinavk@...cinc.com, Sean Paul <sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>
Cc: quic_ebharadw@...cinc.com, linux-arm-msm@...r.kernel.org,
dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, Rob Clark <robdclark@...omium.org>,
Ville Syrjälä <ville.syrjala@...ux.intel.com>
Subject: Re: [PATCH v2 16/22] drm/msm/dpu: Configure CWB in writeback encoder
Hi,
On 30/09/2024 21:19, Jessica Zhang wrote:
>
>
> On 9/30/2024 7:17 AM, neil.armstrong@...aro.org wrote:
>> On 25/09/2024 00:59, Jessica Zhang wrote:
>>> Cache the CWB block mask in the DPU virtual encoder and configure CWB
>>> according to the CWB block mask within the writeback phys encoder
>>>
>>> Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
>>> ---
>>> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 83 ++++++++++++ +++++++++-
>>> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h | 16 ++++-
>>> .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 4 +-
>>> 3 files changed, 100 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/ gpu/drm/msm/disp/dpu1/dpu_encoder.c
>>> index b2f0bf412451..2628f2d55cb3 100644
>>> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
>>> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
>>> @@ -24,6 +24,7 @@
>>> #include "dpu_hw_catalog.h"
>>> #include "dpu_hw_intf.h"
>>> #include "dpu_hw_ctl.h"
>>> +#include "dpu_hw_cwb.h"
>>> #include "dpu_hw_dspp.h"
>>> #include "dpu_hw_dsc.h"
>>> #include "dpu_hw_merge3d.h"
>>> @@ -139,6 +140,7 @@ enum dpu_enc_rc_states {
>>> * num_phys_encs.
>>> * @hw_dsc: Handle to the DSC blocks used for the display.
>>> * @dsc_mask: Bitmask of used DSC blocks.
>>> + * @cwb_mask Bitmask of used CWB muxes
>>> * @intfs_swapped: Whether or not the phys_enc interfaces have been swapped
>>> * for partial update right-only cases, such as pingpong
>>> * split where virtual pingpong does not generate IRQs
>>> @@ -185,6 +187,7 @@ struct dpu_encoder_virt {
>>> struct dpu_hw_dsc *hw_dsc[MAX_CHANNELS_PER_ENC];
>>> unsigned int dsc_mask;
>>> + unsigned int cwb_mask;
>>> bool intfs_swapped;
>>> @@ -1063,6 +1066,7 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
>>> int num_cwb = 0;
>>> bool is_cwb_encoder;
>>> unsigned int dsc_mask = 0;
>>> + unsigned int cwb_mask = 0;
>>> int i;
>>> if (!drm_enc) {
>>> @@ -1103,8 +1107,12 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
>>> ARRAY_SIZE(hw_pp));
>>> }
>>> - for (i = 0; i < num_cwb; i++)
>>> + for (i = 0; i < num_cwb; i++) {
>>> dpu_enc->hw_cwb[i] = to_dpu_hw_cwb(hw_cwb[i]);
>>> + cwb_mask |= BIT(dpu_enc->hw_cwb[i]->idx - CWB_0);
>>> + }
>>> +
>>> + dpu_enc->cwb_mask = cwb_mask;
>>> dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
>>> drm_enc->crtc, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl));
>>> @@ -2071,6 +2079,9 @@ void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc)
>>> }
>>> }
>>> + if (dpu_enc->cwb_mask)
>>> + dpu_encoder_helper_phys_setup_cwb(phys_enc, false);
>>> +
>>> /* reset the merge 3D HW block */
>>> if (phys_enc->hw_pp && phys_enc->hw_pp->merge_3d) {
>>> phys_enc->hw_pp->merge_3d->ops.setup_3d_mode(phys_enc- >hw_pp->merge_3d,
>>> @@ -2114,6 +2125,68 @@ void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc)
>>> ctl->ops.clear_pending_flush(ctl);
>>> }
>>> +void dpu_encoder_helper_phys_setup_cwb(struct dpu_encoder_phys *phys_enc,
>>> + bool enable)
>>> +{
>>> + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(phys_enc- >parent);
>>> + struct dpu_hw_cwb *hw_cwb;
>>> + struct dpu_hw_cwb_setup_cfg cwb_cfg;
>>> +
>>> + struct dpu_kms *dpu_kms;
>>> + struct dpu_global_state *global_state;
>>> + struct dpu_hw_blk *rt_pp_list[MAX_CHANNELS_PER_ENC];
>>> + int num_pp, rt_pp_idx[MAX_CHANNELS_PER_ENC];
>>> +
>>> + if (!phys_enc || !phys_enc->hw_wb || !dpu_enc->cwb_mask)
>>> + return;
>>> +
>>> + dpu_kms = phys_enc->dpu_kms;
>>> + global_state = dpu_kms_get_existing_global_state(dpu_kms);
>>> + num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
>>> + phys_enc->parent->crtc,
>>> + DPU_HW_BLK_PINGPONG, rt_pp_list,
>>> + ARRAY_SIZE(rt_pp_list));
>>> +
>>> + if (num_pp == 0 || num_pp > MAX_CHANNELS_PER_ENC) {
>>> + DPU_DEBUG_ENC(dpu_enc, "invalid num_pp %d\n", num_pp);
>>> + return;
>>> + }
>>> +
>>> + for (int i = 0; i < num_pp; i++) {
>>> + struct dpu_hw_pingpong *hw_pp = to_dpu_hw_pingpong(rt_pp_list[i]);
>>> +
>>> + for (int j = 0; j < ARRAY_SIZE(dpu_enc->hw_cwb); j++) {
>>> + hw_cwb = dpu_enc->hw_cwb[i];
>>> +
>>> + /*
>>> + * Even CWB muxes must take input from even real-time
>>> + * pingpongs and odd CWB muxes must take input from odd
>>> + * pingpongs
>>> + */
>>> + if (hw_pp->idx % 2 == hw_cwb->idx % 2) {
>>
>> When running igt-test on QRD8650, I get:
>> # IGT_FRAME_DUMP_PATH=$PWD FRAME_PNG_FILE_NAME=pwet /usr/libexec/igt- gpu-tools/kms_writeback -d
>
> Hi Neil,
>
> Thanks for reporting this. Unfortunately, I'm not able to recreate this on the MTP8650.
>
> How many/which non-WB outputs are you testing with?
Here's the modetest output:
==================><====================================================
Encoders:
id crtc type possible crtcs possible clones
32 103 DSI 0x00000007 0x00000005
34 0 TMDS 0x00000007 0x00000006
37 0 Virtual 0x00000007 0x00000007
Connectors:
id encoder status name size (mm) modes encoders
33 32 connected DSI-1 71x157 1 32
modes:
index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot
#0 1080x2400 144.00 1080 1100 1102 1122 2400 2420 2422 2440 394225 flags: ; type: preferred, driver
props:
1 EDID:
flags: immutable blob
blobs:
value:
2 DPMS:
flags: enum
enums: On=0 Standby=1 Suspend=2 Off=3
value: 0
5 link-status:
flags: enum
enums: Good=0 Bad=1
value: 0
6 non-desktop:
flags: immutable range
values: 0 1
value: 0
4 TILE:
flags: immutable blob
blobs:
value:
35 0 disconnected DP-1 0x0 0 34
props:
1 EDID:
flags: immutable blob
blobs:
value:
2 DPMS:
flags: enum
enums: On=0 Standby=1 Suspend=2 Off=3
value: 0
5 link-status:
flags: enum
enums: Good=0 Bad=1
value: 0
6 non-desktop:
flags: immutable range
values: 0 1
value: 0
4 TILE:
flags: immutable blob
blobs:
value:
36 subconnector:
flags: immutable enum
enums: Unknown=0 VGA=1 DVI-D=3 HDMI=11 DP=10 Wireless=18 Native=15
value: 0
==================><====================================================
and dri state:
==================><====================================================
# cat /sys/kernel/debug/dri/0/state
plane[43]: plane-0
crtc=crtc-0
fb=106
allocated by = [fbcon]
refcount=2
format=XR24 little-endian (0x34325258)
modifier=0x0
size=1080x2400
layers:
size[0]=1080x2400
pitch[0]=4352
offset[0]=0
obj[0]:
name=0
refcount=1
start=0010102d
size=10444800
imported=no
crtc-pos=1080x2400+0+0
src-pos=1080.000000x2400.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=1
sspp[0]=sspp_0
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=1080x2400+0+0
dst[0]=1080x2400+0+0
plane[49]: plane-1
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=0
sspp[0]=sspp_1
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[55]: plane-2
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=0
sspp[0]=sspp_2
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[61]: plane-3
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=0
sspp[0]=sspp_3
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[67]: plane-4
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=0
sspp[0]=sspp_8
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[73]: plane-5
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=0
sspp[0]=sspp_9
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[79]: plane-6
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=0
sspp[0]=sspp_10
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[85]: plane-7
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=0
sspp[0]=sspp_11
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[91]: plane-8
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=0
sspp[0]=sspp_12
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[97]: plane-9
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
color_mgmt_changed=0
stage=0
sspp[0]=sspp_13
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
crtc[103]: crtc-0
enable=1
active=1
self_refresh_active=0
planes_changed=1
mode_changed=0
active_changed=0
connectors_changed=0
color_mgmt_changed=0
plane_mask=1
connector_mask=1
encoder_mask=1
mode: "1080x2400": 144 394225 1080 1100 1102 1122 2400 2420 2422 2440 0x48 0x0
lm[0]=0
ctl[0]=2
crtc[104]: crtc-1
enable=0
active=0
self_refresh_active=0
planes_changed=0
mode_changed=0
active_changed=0
connectors_changed=0
color_mgmt_changed=0
plane_mask=0
connector_mask=0
encoder_mask=0
mode: "": 0 0 0 0 0 0 0 0 0 0 0x0 0x0
crtc[105]: crtc-2
enable=0
active=0
self_refresh_active=0
planes_changed=0
mode_changed=0
active_changed=0
connectors_changed=0
color_mgmt_changed=0
plane_mask=0
connector_mask=0
encoder_mask=0
mode: "": 0 0 0 0 0 0 0 0 0 0 0x0 0x0
connector[33]: DSI-1
crtc=crtc-0
self_refresh_aware=0
max_requested_bpc=0
colorspace=Default
connector[35]: DP-1
crtc=(null)
self_refresh_aware=0
max_requested_bpc=0
colorspace=Default
connector[42]: Writeback-1
crtc=(null)
self_refresh_aware=0
max_requested_bpc=0
colorspace=Default
resource mapping:
pingpong=103 # # # # # # # # # -
mixer=103 # # # # # -
ctl=# # 103 # # #
dspp=# # # #
dsc=# # # # # #
cdm=-
cwb=# # # #
==================><====================================================
I pasted all the kms_writeback log, I have nothing more.
If I specify `--run-subtest dump-valid-clones` I get:
==================><====================================================
IGT_FRAME_DUMP_PATH=$PWD FRAME_PNG_FILE_NAME=out.png /usr/libexec/igt-gpu-tools/kms_writeback -d --run-subtest dump-valid-clones
[ 33.250236] Console: switching to colour dummy device 80x25
IGT-Version: 1.29-1.28 (aarch64) (Linux: 6.12.0-rc1-00022-ge581f752bf79 aarch64)
Using IGT_SRANDOM=1709054789 for randomisation[ 33.256171] [IGT] kms_writeback: executing
Opened device: /dev/dri/card0
[ 33.360023] [IGT] kms_writeback: starting subtest dump-valid-clones
Starting subtest: dump-valid-clones
[ 34.063316] [drm:dpu_encoder_virt_atomic_disable:1314] [dpu error]enc32 timeout pending
[ 34.244272] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
[ 34.253385] Mem abort info:
[ 34.256328] ESR = 0x0000000096000006
[ 34.260272] EC = 0x25: DABT (current EL), IL = 32 bits
[ 34.265816] SET = 0, FnV = 0
[ 34.269043] EA = 0, S1PTW = 0
[ 34.272332] FSC = 0x06: level 2 translation fault
[ 34.277430] Data abort info:
[ 34.280460] ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000
[ 34.286170] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 34.291438] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 34.296975] user pgtable: 4k pages, 48-bit VAs, pgdp=00000008824fc000
[ 34.303673] [0000000000000010] pgd=08000008dc4e0003, p4d=08000008dc4e0003, pud=08000008dd4af003, pmd=0000000000000000
[ 34.314647] Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
[ 34.321144] Modules linked in: snd_soc_wsa884x q6prm_clocks q6apm_dai q6apm_lpass_dais snd_q6dsp_common q6prm 8021q garp mrp stp llc usb_f_fs libcomposite qrtr_mhi snd_q6apm rpmsg_ctrl fastrpc apr qrtr_smd rpmsg_char snd_soc_hdmi_codec ath12k mac80211 libarc4 mhi panel_visionox_vtdr6130 qcom_pd_mapper goodix_berlin_spi ucsi_glink pmic_glink_altmode pci_pwrctl_pwrseq pci_pwrctl_core typec_ucsi aux_hpd_bridge qcom_battmgr nb7vpq904m wcd939x_usbss goodix_berlin_core crct10dif_ce phy_qcom_eusb2_repeater msm sm3_ce sm3 qcom_q6v5_pas sha3_ce hci_uart sha512_ce sha512_arm64 leds_qcom_lpg ocmem qcom_pil_info qcom_q6v5 qcom_pbs btqca ipa btbcm drm_exec qcom_sysmon pwrseq_qcom_wcn snd_soc_sc8280xp led_class_multicolor snd_soc_qcom_sdw qrtr qcom_common gpu_sched snd_soc_wcd939x drm_dp_aux_bus qcom_spmi_temp_alarm snd_soc_qcom_common qcom_glink_smem snd_soc_wcd939x_sdw rtc_pm8xxx drm_display_helper pinctrl_sm8650_lpass_lpi regmap_sdw cfg80211 bluetooth qcom_pon pmic_glink ecdh_generic pdr_interface phy_qcom_qmp_combo ecc rfkill
[ 34.321268] nvmem_qcom_spmi_sdam qcom_stats spi_geni_qcom pwrseq_core i2c_qcom_geni aux_bridge phy_qcom_snps_eusb2 dispcc_sm8550 drm_kms_helper gpi soundwire_qcom snd_soc_lpass_va_macro pinctrl_lpass_lpi snd_soc_wcd_mbhc snd_soc_lpass_tx_macro snd_soc_lpass_rx_macro snd_soc_lpass_wsa_macro llcc_qcom snd_soc_lpass_macro_common slimbus snd_soc_wcd_classh mdt_loader qcom_pdr_msg qcrypto gpucc_sm8650 icc_bwmon qmi_helpers authenc phy_qcom_qmp_ufs libdes soundwire_bus ufs_qcom nvmem_reboot_mode phy_qcom_qmp_pcie typec qcom_rng rmtfs_mem socinfo fuse drm backlight ipv6
[ 34.464862] CPU: 5 UID: 0 PID: 513 Comm: kms_writeback Tainted: G S 6.12.0-rc1-00022-ge581f752bf79 #2
[ 34.475812] Tainted: [S]=CPU_OUT_OF_SPEC
[ 34.479905] Hardware name: Qualcomm Technologies, Inc. SM8650 QRD (DT)
[ 34.486667] pstate: 81400005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[ 34.493880] pc : dpu_encoder_helper_phys_setup_cwb+0xb8/0x1ec [msm]
[ 34.500441] lr : dpu_encoder_helper_phys_setup_cwb+0x88/0x1ec [msm]
[ 34.506969] sp : ffff800085fc37e0
[ 34.510437] x29: ffff800085fc3810 x28: ffffb8c93c953068 x27: ffff5af315c90880
[ 34.517826] x26: ffff5af359c55780 x25: ffff800085fc3878 x24: ffff5af35a956e80
[ 34.525217] x23: 0000000000000000 x22: ffff5af355dc2080 x21: ffff5af35a956e80
[ 34.532607] x20: ffff5af315c90880 x19: ffff5af315c90c80 x18: 0000000000000001
[ 34.539997] x17: 0000000000000018 x16: ffffb8c95c9c8c64 x15: 0000000000000038
[ 34.547385] x14: 0000001971602a24 x13: 00000000000000e1 x12: 000000000000000b
[ 34.554774] x11: 0000000000000000 x10: e7125de8a27ae014 x9 : 5aef79bd13b1e2a7
[ 34.562162] x8 : ffff5af355dc2718 x7 : 0000000000000004 x6 : ffff5af356374d98
[ 34.569550] x5 : 0000000000000002 x4 : ffff800085fc37f8 x3 : ffff5af315c90950
[ 34.576938] x2 : 0000000000000002 x1 : 0000000000000000 x0 : 0000000000000001
[ 34.584328] Call trace:
[ 34.586905] dpu_encoder_helper_phys_setup_cwb+0xb8/0x1ec [msm]
[ 34.593075] dpu_encoder_helper_phys_cleanup+0x328/0x3c4 [msm]
[ 34.599165] dpu_encoder_phys_wb_disable+0x80/0xac [msm]
[ 34.604713] dpu_encoder_virt_atomic_disable+0xb4/0x160 [msm]
[ 34.610711] disable_outputs+0x108/0x32c [drm_kms_helper]
[ 34.616351] drm_atomic_helper_commit_modeset_disables+0x1c/0x4c [drm_kms_helper]
[ 34.624110] msm_atomic_commit_tail+0x188/0x514 [msm]
[ 34.629396] commit_tail+0xa4/0x18c [drm_kms_helper]
[ 34.634570] drm_atomic_helper_commit+0x17c/0x194 [drm_kms_helper]
[ 34.640990] drm_atomic_commit+0xb8/0xf4 [drm]
[ 34.645690] drm_mode_atomic_ioctl+0xad4/0xd88 [drm]
[ 34.650889] drm_ioctl_kernel+0xc0/0x128 [drm]
[ 34.655564] drm_ioctl+0x218/0x49c [drm]
[ 34.659697] __arm64_sys_ioctl+0xac/0xf0
[ 34.663804] invoke_syscall+0x48/0x10c
[ 34.667755] el0_svc_common.constprop.0+0xc0/0xe0
[ 34.672648] do_el0_svc+0x1c/0x28
[ 34.676117] el0_svc+0x34/0xd8
[ 34.679330] el0t_64_sync_handler+0x120/0x12c
[ 34.683864] el0t_64_sync+0x190/0x194
[ 34.687699] Code: 910063e1 f8607822 f8607861 b9401042 (b9401021)
[ 34.694014] ---[ end trace 0000000000000000 ]---
==================><====================================================
Neil
>
> Also, can you share the IGT debug logs?
>
> FWIW, I haven't had the chance to test with DP yet so that might be why you're hitting this issue and I'm not.
>
> Thanks,
>
> Jessica Zhang
>
>> [ 2566.668998] Console: switching to colour dummy device 80x25
>> IGT-Version: 1.29-1.28 (aarch64) (Linux: 6.12.0-rc1-00022-ge581f752bf79 aarch64)
>> [ 2566.674859] [IGT] kms_writeback: executing
>> Using IGT_SRANDOM=1709057323 for randomisation
>> Opened device: /dev/dri/card0
>> [ 2566.741375] [IGT] kms_writeback: starting subtest dump-writeback
>> Starting subtest: dump-writeback
>> Subtest dump-writeback: SUCCESS (0.305s)[ 2567.053189] [IGT] kms_writeback: finished subtest dump-writeback, SUCCESS
>>
>> [ 2567.064505] [IGT] kms_writeback: starting subtest dump-valid-clones
>> Starting subtest: dump-valid-clones
>> [ 2567.762793] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
>> [ 2567.771919] Mem abort info:
>> [ 2567.774888] ESR = 0x0000000096000006
>> [ 2567.778831] EC = 0x25: DABT (current EL), IL = 32 bits
>> [ 2567.784371] SET = 0, FnV = 0
>> [ 2567.787601] EA = 0, S1PTW = 0
>> [ 2567.790942] FSC = 0x06: level 2 translation fault
>> [ 2567.796044] Data abort info:
>> [ 2567.799083] ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000
>> [ 2567.804793] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
>> [ 2567.810057] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
>> [ 2567.815600] user pgtable: 4k pages, 48-bit VAs, pgdp=00000008d60cf000
>> [ 2567.822290] [0000000000000010] pgd=08000008d6049003, p4d=08000008d6049003, pud=080000089397e003, pmd=0000000000000000
>> [ 2567.833254] Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
>> [ 2567.839747] Modules linked in: snd_soc_wsa884x q6prm_clocks q6apm_lpass_dais snd_q6dsp_common q6apm_dai q6prm 8021q garp mrp stp llc usb_f_fs libcomposite qrtr_mhi snd_soc_hdmi_codec ath12k mac80211 libarc4 mhi panel_visionox_vtdr6130 snd_q6apm pci_pwrctl_pwrseq pci_pwrctl_core rpmsg_ctrl apr fastrpc qrtr_smd rpmsg_char wcd939x_usbss nb7vpq904m qcom_pd_mapper goodix_berlin_spi goodix_berlin_core ucsi_glink typec_ucsi pmic_glink_altmode aux_hpd_bridge qcom_battmgr leds_qcom_lpg msm ocmem drm_exec hci_uart qcom_pbs gpu_sched led_class_multicolor btqca phy_qcom_eusb2_repeater btbcm qcom_spmi_temp_alarm drm_dp_aux_bus phy_qcom_qmp_combo crct10dif_ce bluetooth drm_display_helper sm3_ce ecdh_generic aux_bridge sm3 snd_soc_sc8280xp pwrseq_qcom_wcn sha3_ce snd_soc_qcom_sdw rtc_pm8xxx qcom_pon ecc nvmem_qcom_spmi_sdam sha512_ce qcom_stats spi_geni_qcom snd_soc_qcom_common sha512_arm64 pwrseq_core i2c_qcom_geni cfg80211 drm_kms_helper dispcc_sm8550 gpi ipa snd_soc_lpass_va_macro
>> snd_soc_lpass_tx_macro soundwire_qcom
>> [ 2567.839860] pinctrl_sm8650_lpass_lpi snd_soc_lpass_wsa_macro snd_soc_lpass_rx_macro rfkill slimbus phy_qcom_snps_eusb2 pinctrl_lpass_lpi gpucc_sm8650 snd_soc_lpass_macro_common qcom_q6v5_pas qcom_pil_info qcom_q6v5 qcrypto authenc icc_bwmon qcom_sysmon qcom_common qrtr qcom_glink_smem phy_qcom_qmp_pcie mdt_loader libdes llcc_qcom ufs_qcom phy_qcom_qmp_ufs pmic_glink snd_soc_wcd939x rmtfs_mem pdr_interface snd_soc_wcd939x_sdw regmap_sdw qcom_pdr_msg snd_soc_wcd_mbhc qmi_helpers snd_soc_wcd_classh soundwire_bus typec nvmem_reboot_mode qcom_rng socinfo fuse drm backlight ipv6
>> [ 2567.983445] CPU: 5 UID: 0 PID: 554 Comm: kms_writeback Tainted: G S 6.12.0-rc1-00022-ge581f752bf79 #2
>> [ 2567.994390] Tainted: [S]=CPU_OUT_OF_SPEC
>> [ 2567.998483] Hardware name: Qualcomm Technologies, Inc. SM8650 QRD (DT)
>> [ 2568.005244] pstate: 81400005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
>> [ 2568.012455] pc : dpu_encoder_helper_phys_setup_cwb+0xb8/0x1ec [msm]
>> [ 2568.019009] lr : dpu_encoder_helper_phys_setup_cwb+0x88/0x1ec [msm]
>> [ 2568.025532] sp : ffff80008939b7e0
>> [ 2568.028999] x29: ffff80008939b810 x28: ffffcbcb66f26068 x27: ffff37ad962cb080
>> [ 2568.036388] x26: ffff37ad9887ed80 x25: ffff80008939b878 x24: ffff37ad43642a80
>> [ 2568.043775] x23: 0000000000000000 x22: ffff37ad42812080 x21: ffff37ad43642a80
>> [ 2568.051163] x20: ffff37ad962cb080 x19: ffff37ad962c8080 x18: 0000000000000001
>> [ 2568.058552] x17: 000000040044ffff x16: ffffcbcbb0fc8c64 x15: 00003d08ffff9c00
>> [ 2568.065939] x14: 00000013519b2832 x13: ffff37ad9d392200 x12: 000000000000000b
>> [ 2568.073325] x11: ffff37ad40dc56c0 x10: ffff37ad9d392200 x9 : ffff37afbe7bba80
>> [ 2568.080712] x8 : ffff37ad42812718 x7 : 0000000000000004 x6 : ffff37ad989ac798
>> [ 2568.088098] x5 : 0000000000000002 x4 : ffff80008939b7f8 x3 : ffff37ad962cb150
>> [ 2568.095480] x2 : 0000000000000002 x1 : 0000000000000000 x0 : 0000000000000001
>> [ 2568.102868] Call trace:
>> [ 2568.105446] dpu_encoder_helper_phys_setup_cwb+0xb8/0x1ec [msm]
>> [ 2568.111608] dpu_encoder_helper_phys_cleanup+0x328/0x3c4 [msm]
>> [ 2568.117692] dpu_encoder_phys_wb_disable+0x80/0xac [msm]
>> [ 2568.123233] dpu_encoder_virt_atomic_disable+0xb4/0x160 [msm]
>> [ 2568.129224] disable_outputs+0x108/0x32c [drm_kms_helper]
>> [ 2568.134858] drm_atomic_helper_commit_modeset_disables+0x1c/0x4c [drm_kms_helper]
>> [ 2568.142614] msm_atomic_commit_tail+0x188/0x514 [msm]
>> [ 2568.147894] commit_tail+0xa4/0x18c [drm_kms_helper]
>> [ 2568.153065] drm_atomic_helper_commit+0x17c/0x194 [drm_kms_helper]
>> [ 2568.159482] drm_atomic_commit+0xb8/0xf4 [drm]
>> [ 2568.164176] drm_mode_atomic_ioctl+0xad4/0xd88 [drm]
>> [ 2568.169369] drm_ioctl_kernel+0xc0/0x128 [drm]
>> [ 2568.174039] drm_ioctl+0x218/0x49c [drm]
>> [ 2568.178165] __arm64_sys_ioctl+0xac/0xf0
>> [ 2568.182271] invoke_syscall+0x48/0x10c
>> [ 2568.186217] el0_svc_common.constprop.0+0xc0/0xe0
>> [ 2568.191109] do_el0_svc+0x1c/0x28
>> [ 2568.194576] el0_svc+0x34/0xd8
>> [ 2568.197788] el0t_64_sync_handler+0x120/0x12c
>> [ 2568.202321] el0t_64_sync+0x190/0x194
>> [ 2568.206157] Code: 910063e1 f8607822 f8607861 b9401042 (b9401021)
>> [ 2568.212484] ---[ end trace 0000000000000000 ]---
>>
>> Neil
>>
>>> + rt_pp_idx[i] = enable ? hw_pp->idx : PINGPONG_NONE;
>>> + break;
>>> + }
>>> + }
>>> + }
>>> +
>>> + /*
>>> + * The CWB mux supports using LM or DSPP as tap points. For now,
>>> + * always use LM tap point
>>> + */
>>> + cwb_cfg.input = INPUT_MODE_LM_OUT;
>>> +
>>> + for (int i = 0; i < MAX_CHANNELS_PER_ENC; i++) {
>>> + hw_cwb = dpu_enc->hw_cwb[i];
>>> + if (!hw_cwb)
>>> + continue;
>>> +
>>> + cwb_cfg.pp_idx = rt_pp_idx[i];
>>> +
>>> + hw_cwb->ops.config_cwb(hw_cwb, &cwb_cfg);
>>> + }
>>> +}
>>> +
>>> void dpu_encoder_helper_phys_setup_cdm(struct dpu_encoder_phys *phys_enc,
>>> const struct msm_format *dpu_fmt,
>>> u32 output_type)
>>> @@ -2557,6 +2630,14 @@ enum dpu_intf_mode dpu_encoder_get_intf_mode(struct drm_encoder *encoder)
>>> return INTF_MODE_NONE;
>>> }
>>> +unsigned int dpu_encoder_helper_get_cwb(struct dpu_encoder_phys *phys_enc)
>>> +{
>>> + struct drm_encoder *encoder = phys_enc->parent;
>>> + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(encoder);
>>> +
>>> + return dpu_enc->cwb_mask;
>>> +}
>>> +
>>> unsigned int dpu_encoder_helper_get_dsc(struct dpu_encoder_phys *phys_enc)
>>> {
>>> struct drm_encoder *encoder = phys_enc->parent;
>>> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h b/ drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
>>> index e77ebe3a68da..d7a02d1f8053 100644
>>> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
>>> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
>>> @@ -1,6 +1,6 @@
>>> /* SPDX-License-Identifier: GPL-2.0-only */
>>> /*
>>> - * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
>>> + * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
>>> * Copyright (c) 2015-2018 The Linux Foundation. All rights reserved.
>>> */
>>> @@ -331,6 +331,12 @@ static inline enum dpu_3d_blend_mode dpu_encoder_helper_get_3d_blend_mode(
>>> return BLEND_3D_NONE;
>>> }
>>> +/**
>>> + * dpu_encoder_helper_get_cwb - get CWB blocks mask for the DPU encoder
>>> + * @phys_enc: Pointer to physical encoder structure
>>> + */
>>> +unsigned int dpu_encoder_helper_get_cwb(struct dpu_encoder_phys *phys_enc);
>>> +
>>> /**
>>> * dpu_encoder_helper_get_dsc - get DSC blocks mask for the DPU encoder
>>> * This helper function is used by physical encoder to get DSC blocks mask
>>> @@ -400,6 +406,14 @@ int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
>>> */
>>> void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc);
>>> +/**
>>> + * dpu_encoder_helper_phys_setup_cwb - helper to configure CWB muxes
>>> + * @phys_enc: Pointer to physical encoder structure
>>> + * @enable: Enable CWB mux
>>> + */
>>> +void dpu_encoder_helper_phys_setup_cwb(struct dpu_encoder_phys *phys_enc,
>>> + bool enable);
>>> +
>>> /**
>>> * dpu_encoder_helper_phys_setup_cdm - setup chroma down sampling block
>>> * @phys_enc: Pointer to physical encoder
>>> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/ drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
>>> index 882c717859ce..e88c4d91041f 100644
>>> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
>>> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
>>> @@ -1,6 +1,6 @@
>>> // SPDX-License-Identifier: GPL-2.0-only
>>> /*
>>> - * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
>>> + * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
>>> */
>>> #define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
>>> @@ -342,6 +342,8 @@ static void dpu_encoder_phys_wb_setup(
>>> dpu_encoder_helper_phys_setup_cdm(phys_enc, dpu_fmt, CDM_CDWN_OUTPUT_WB);
>>> + dpu_encoder_helper_phys_setup_cwb(phys_enc, true);
>>> +
>>> dpu_encoder_phys_wb_setup_ctl(phys_enc);
>>> }
>>>
>>
>
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