On Sat, 30 Mar 2024 at 18:49, Marijn Suijten
<marijn.suijten@xxxxxxxxxxxxxx> wrote:
>
> On 2024-03-30 05:52:29, Dmitry Baryshkov wrote:
> > In case of CMD DSI panels, the vblank IRQ can be used outside of
> > irq_enable/irq_disable pair. This results in the following kind of
>
> Can you clarify when exactly that is? Is it via ops.control_vblank_irq in
> dpu_encoder_toggle_vblank_for_crtc()?
Call trace:
dpu_encoder_phys_cmd_control_vblank_irq+0x218/0x294
dpu_encoder_toggle_vblank_for_crtc+0x160/0x194
dpu_crtc_vblank+0xbc/0x228
dpu_kms_enable_vblank+0x18/0x24
vblank_ctrl_worker+0x34/0x6c
process_one_work+0x218/0x620
worker_thread+0x1ac/0x37c
kthread+0x114/0x118
ret_from_fork+0x10/0x20
The vblank_ctrl_work happens when the framework attempts to trigger
the vblank on the CRTC.
>
> > messages. Move assignment of IRQ indices to atomic_enable /
> > atomic_disable callbacks.
> >
> > [dpu error]invalid IRQ=[134217727, 31]
> > [drm:dpu_encoder_phys_cmd_control_vblank_irq] *ERROR* vblank irq err id:31 pp:0 ret:-22, enable true/0
> > [drm:dpu_encoder_phys_cmd_control_vblank_irq] *ERROR* vblank irq err id:31 pp:0 ret:-22, enable false/0
>
> You are right that such messages are common, both at random but also seemingly
> around toggling the `ACTIVE` property on the CRTC:
>
> [ 45.878300] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_disable
> [ 45.909941] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_unprepare
> [ 46.093234] [drm:dpu_encoder_helper_wait_for_irq] *ERROR* encoder is disabled id=31, callback=dpu_encoder_phys_cmd_ctl_start_irq, IRQ=[134217727, 31]
> [ 46.130421] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_prepare
> [ 46.340457] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_enable
> [ 65.520323] [dpu error]invalid IRQ=[134217727, 31] irq_cb:dpu_encoder_phys_cmd_te_rd_ptr_irq
> [ 65.520463] [drm:dpu_encoder_phys_cmd_control_vblank_irq] *ERROR* vblank irq err id:31 pp:0 ret:-22, enable true/0
> [ 65.630199] [drm:dpu_encoder_phys_cmd_control_vblank_irq] *ERROR* vblank irq err id:31 pp:0 ret:-22, enable false/0
> [ 166.576465] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_disable
> [ 166.609674] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_unprepare
> [ 166.781967] [drm:dpu_encoder_helper_wait_for_irq] *ERROR* encoder is disabled id=31, callback=dpu_encoder_phys_cmd_ctl_start_irq, IRQ=[134217727, 31]
> [ 166.829805] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_prepare
> [ 167.040476] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_enable
> [ 337.449827] [dpu error]invalid IRQ=[134217727, 31] irq_cb:dpu_encoder_phys_cmd_te_rd_ptr_irq
> [ 337.450434] [drm:dpu_encoder_phys_cmd_control_vblank_irq] *ERROR* vblank irq err id:31 pp:0 ret:-22, enable true/0
> [ 337.569526] [drm:dpu_encoder_phys_cmd_control_vblank_irq] *ERROR* vblank irq err id:31 pp:0 ret:-22, enable false/0
> [ 354.980357] [dpu error]invalid IRQ=[134217727, 31] irq_cb:dpu_encoder_phys_cmd_te_rd_ptr_irq
> [ 354.980495] [drm:dpu_encoder_phys_cmd_control_vblank_irq] *ERROR* vblank irq err id:31 pp:0 ret:-22, enable true/0
> [ 355.090460] [drm:dpu_encoder_phys_cmd_control_vblank_irq] *ERROR* vblank irq err id:31 pp:0 ret:-22, enable false/0
>
> Unfortunately with this patch, turning the CRTC off via ./modetest -M msm -a
> -w 81:ACTIVE:0 immediately triggers a bunch of WARNs (note that the CRTC turns
> on immediately again when the command returns, that's probably the framebuffer
> console taking over again). Running it a few times in succession this may or
> may not happen, or reboot the phone (Xperia Griffin) entirely:
I could not reproduce it here, on Pixel-3. I'd like to review vblank
IRQs later. For now I think it is easier to revert d13f638c9b88
("drm/msm/dpu: drop dpu_encoder_phys_ops.atomic_mode_set"). I'll send
a patch.
>
> [ 23.423930] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_disable
> [ 23.461013] [dpu error]invalid IRQ=[134217727, 31]
> [ 23.461144] [dpu error]invalid IRQ=[134217727, 31]
> [ 23.461208] [drm:dpu_encoder_phys_cmd_control_vblank_irq] *ERROR* vblank irq err id:31 pp:0 ret:-22, enable false/1
> [ 23.461340] [dpu error]invalid IRQ=[134217727, 31]
> [ 23.461406] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_unprepare
> [ 23.641721] [drm:dpu_encoder_helper_wait_for_irq] *ERROR* encoder is disabled id=31, callback=dpu_encoder_phys_cmd_ctl_start_irq, IRQ=[134217727, 31]
> [ 23.679938] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_prepare
> [ 23.900465] ------------[ cut here ]------------
> [ 23.900813] WARNING: CPU: 1 PID: 747 at drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c:545 dpu_core_irq_register_callback+0x1b4/0x244
> [ 23.901450] Modules linked in:
> [ 23.901814] CPU: 1 PID: 747 Comm: modetest Tainted: G U 6.9.0-rc1-next-20240328-SoMainline-02555-g27abbea53b6b #19
> [ 23.902402] Hardware name: Sony Xperia 1 (DT)
> [ 23.902674] pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [ 23.903133] pc : dpu_core_irq_register_callback+0x1b4/0x244
> [ 23.903455] lr : dpu_encoder_phys_cmd_irq_enable+0x30/0x8c
> [ 23.903880] sp : ffff800086833930
> [ 23.904123] x29: ffff800086833930 x28: 0000000000000001 x27: ffff0273834522d0
> [ 23.904604] x26: ffffd46ebdb5edc8 x25: ffffd46ebe0f1228 x24: ffff02738106b280
> [ 23.904973] x23: ffff027383452000 x22: ffffd46ebd086290 x21: 0000000000000000
> [ 23.905452] x20: ffff027382712080 x19: 0000000000000008 x18: ffff8000840550d0
> [ 23.905820] x17: 000000040044ffff x16: 005000f2b5503510 x15: 00000000000006ce
> [ 23.906300] x14: 0000000000000f00 x13: 0000000000000f00 x12: 0000000000000f00
> [ 23.906778] x11: 0000000000000040 x10: ffffd46ebe853258 x9 : ffffd46ebe853250
> [ 23.907146] x8 : ffffd46ebec30000 x7 : 0000000000000000 x6 : 0000000000000000
> [ 23.907621] x5 : 0000000000000000 x4 : ffff027384eac080 x3 : ffff027381a1a080
> [ 23.908099] x2 : 0000000000000001 x1 : ffff027384eac140 x0 : ffffd46ebd086290
> [ 23.908467] Call trace:
> [ 23.908688] dpu_core_irq_register_callback+0x1b4/0x244
> [ 23.909113] dpu_encoder_phys_cmd_irq_enable+0x30/0x8c
> [ 23.909417] _dpu_encoder_irq_enable+0x58/0xa4
> [ 23.909814] dpu_encoder_resource_control+0x1e8/0x498
> [ 23.910116] dpu_encoder_virt_atomic_enable+0x9c/0x15c
> [ 23.910531] drm_atomic_helper_commit_modeset_enables+0x180/0x26c
> [ 23.910871] msm_atomic_commit_tail+0x1a4/0x510
> [ 23.911277] commit_tail+0xa8/0x19c
> [ 23.911544] drm_atomic_helper_commit+0x188/0x1a0
> [ 23.911842] drm_atomic_commit+0xb4/0xf0
> [ 23.912226] drm_client_modeset_commit_atomic+0x1fc/0x268
> [ 23.912540] drm_client_modeset_commit_locked+0x60/0x178
> [ 23.912963] drm_client_modeset_commit+0x30/0x5c
> [ 23.913256] drm_fb_helper_lastclose+0x64/0xb0
> [ 23.913542] msm_fbdev_client_restore+0x18/0x2c
> [ 23.913948] drm_client_dev_restore+0x8c/0xec
> [ 23.914233] drm_lastclose+0x68/0xac
> [ 23.914499] drm_release+0x128/0x15c
> [ 23.914765] __fput+0x7c/0x2cc
> [ 23.915017] __fput_sync+0x54/0x64
> [ 23.915272] __arm64_sys_close+0x3c/0x84
> [ 23.915661] invoke_syscall+0x4c/0x11c
> [ 23.915932] el0_svc_common.constprop.0+0x44/0xec
> [ 23.916230] do_el0_svc+0x20/0x30
> [ 23.916600] el0_svc+0x38/0xe4
> [ 23.916854] el0t_64_sync_handler+0x128/0x134
> [ 23.917139] el0t_64_sync+0x198/0x19c
> [ 23.917515] ---[ end trace 0000000000000000 ]---
> [ 23.918007] ------------[ cut here ]------------
> [ 23.918324] WARNING: CPU: 1 PID: 747 at drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c:545 dpu_core_irq_register_callback+0x1b4/0x244
> [ 23.918720] Modules linked in:
> [ 23.918878] CPU: 1 PID: 747 Comm: modetest Tainted: G U W 6.9.0-rc1-next-20240328-SoMainline-02555-g27abbea53b6b #19
> [ 23.919248] Hardware name: Sony Xperia 1 (DT)
> [ 23.919424] pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [ 23.919725] pc : dpu_core_irq_register_callback+0x1b4/0x244
> [ 23.919934] lr : dpu_encoder_phys_cmd_irq_enable+0x78/0x8c
> [ 23.920214] sp : ffff800086833930
> [ 23.920373] x29: ffff800086833930 x28: 0000000000000001 x27: ffff0273834522d0
> [ 23.920686] x26: ffffd46ebdb5edc8 x25: ffffd46ebe0f1228 x24: ffff02738106b280
> [ 23.920922] x23: ffff027383452000 x22: ffffd46ebd086020 x21: 0000000000000000
> [ 23.921237] x20: ffff027382712080 x19: 0000000000000029 x18: ffff8000840550d0
> [ 23.921545] x17: 000000040044ffff x16: 005000f2b5503510 x15: 00000000000006ce
> [ 23.921780] x14: 0000000000000f00 x13: 0000000000000f00 x12: 0000000000000f00
> [ 23.922092] x11: 0000000000000040 x10: ffffd46ebe853258 x9 : ffffd46ebe853250
> [ 23.922405] x8 : ffffd46ebec30000 x7 : 0000000000000000 x6 : 0000000000000001
> [ 23.922640] x5 : ffffd46ebe0878d8 x4 : ffff027384eac080 x3 : ffff027381a1a080
> [ 23.922953] x2 : 0000000000000001 x1 : ffff027384eac458 x0 : ffffd46ebd086020
> [ 23.923266] Call trace:
> [ 23.923411] dpu_core_irq_register_callback+0x1b4/0x244
> [ 23.923616] dpu_encoder_phys_cmd_irq_enable+0x78/0x8c
> [ 23.923893] _dpu_encoder_irq_enable+0x58/0xa4
> [ 23.924078] dpu_encoder_resource_control+0x1e8/0x498
> [ 23.924273] dpu_encoder_virt_atomic_enable+0x9c/0x15c
> [ 23.924547] drm_atomic_helper_commit_modeset_enables+0x180/0x26c
> [ 23.924763] msm_atomic_commit_tail+0x1a4/0x510
> [ 23.925030] commit_tail+0xa8/0x19c
> [ 23.925205] drm_atomic_helper_commit+0x188/0x1a0
> [ 23.925477] drm_atomic_commit+0xb4/0xf0
> [ 23.925653] drm_client_modeset_commit_atomic+0x1fc/0x268
> [ 23.925856] drm_client_modeset_commit_locked+0x60/0x178
> [ 23.926136] drm_client_modeset_commit+0x30/0x5c
> [ 23.926325] drm_fb_helper_lastclose+0x64/0xb0
> [ 23.926585] msm_fbdev_client_restore+0x18/0x2c
> [ 23.926771] drm_client_dev_restore+0x8c/0xec
> [ 23.926956] drm_lastclose+0x68/0xac
> [ 23.927206] drm_release+0x128/0x15c
> [ 23.927379] __fput+0x7c/0x2cc
> [ 23.927541] __fput_sync+0x54/0x64
> [ 23.927785] __arm64_sys_close+0x3c/0x84
> [ 23.927965] invoke_syscall+0x4c/0x11c
> [ 23.928141] el0_svc_common.constprop.0+0x44/0xec
> [ 23.928411] do_el0_svc+0x20/0x30
> [ 23.928582] el0_svc+0x38/0xe4
> [ 23.928746] el0t_64_sync_handler+0x128/0x134
> [ 23.929008] el0t_64_sync+0x198/0x19c
> [ 23.929180] ---[ end trace 0000000000000000 ]---
> [ 23.929429] panel-samsung-souxp ae94000.dsi.0: samsung_souxp00_enable
>
> - Marijn
--
With best wishes
Dmitry
