Re: [PATCH v2 16/22] drm/msm/dpu: Configure CWB in writeback encoder
From: Jessica Zhang
Date: Tue Oct 08 2024 - 08:26:52 EST
On 10/8/2024 1:00 AM, Neil Armstrong wrote:
Hi,
On 01/10/2024 09:37, neil.armstrong@xxxxxxxxxx wrote:
Hi,
On 30/09/2024 21:19, Jessica Zhang wrote:
On 9/30/2024 7:17 AM, neil.armstrong@xxxxxxxxxx wrote:
On 25/09/2024 00:59, Jessica Zhang wrote:
<snip>
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 ]---
==================><====================================================
Anything I can try to get past the crash ?
Hey Neil,
Sorry for the late reply -- I was able to recreate this error using a
clean IGT build. Looks like the NULL dereference is coming from looping
through rt_pp_list.
I'm already planning to drop this in the v3, but for now can you try
applying this change and seeing if it fixes the NULL dereference for you:
@@ -2166,7 +2172,7 @@ void dpu_encoder_helper_phys_setup_cwb(struct
dpu_encoder_phys *phys_enc,
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];
+ int num_pp;
if (!phys_enc || !phys_enc->hw_wb || !dpu_enc->cwb_mask)
return;
@@ -2191,24 +2197,6 @@ void dpu_encoder_helper_phys_setup_cwb(struct
dpu_encoder_phys *phys_enc,
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) {
- 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
@@ -2220,7 +2208,13 @@ void dpu_encoder_helper_phys_setup_cwb(struct
dpu_encoder_phys *phys_enc,
if (!hw_cwb)
continue;
- cwb_cfg.pp_idx = rt_pp_idx[i];
+ if (enable) {
+ struct dpu_hw_pingpong *hw_pp =
+ to_dpu_hw_pingpong(rt_pp_list[i]);
+ cwb_cfg.pp_idx = hw_pp->idx;
+ } else {
+ cwb_cfg.pp_idx = PINGPONG_NONE;
+ }
Thanks,
Jessica Zhang
Thanks,
Neil
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);
}