Re: [PATCH v2 16/22] drm/msm/dpu: Configure CWB in writeback encoder
From: neil . armstrong
Date: Wed Oct 09 2024 - 03:46:37 EST
On 08/10/2024 14:25, Jessica Zhang wrote:
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.
<snip>
Thanks for the fix, Indeed it fixes the crash, but the igt test tries to use the Disconnected and fails:
Starting subtest: dump-valid-clones
(kms_writeback:521) igt_kms-CRITICAL: Test assertion failure function kmstest_dumb_create, file /usr/src/debug/igt-gpu-tools/1.28/lib/igt_kms.c:1301:
(kms_writeback:521) igt_kms-CRITICAL: Failed assertion: igt_ioctl((fd), ((((2U|1U) << (((0+8)+8)+14)) | ((('d')) << (0+8)) | (((0xB2)) << 0) | ((((sizeof(struct drm_mode_create_dumb)))) << ((0+8)+8)))), (&create)) == 0
(kms_writeback:521) igt_kms-CRITICAL: Last errno: 22, Invalid argument
(kms_writeback:521) igt_kms-CRITICAL: error: -1 != 0
Stack trace:
#0 [igt_nsec_elapsed+0x500]
Subtest dump-valid-clones failed.
**** DEBUG ****
(kms_writeback:521) DEBUG: Test requirement passed: !(!data.dump_check || data.list_modes)
(kms_writeback:521) DEBUG: Test requirement passed: !(!(data.supported_colors & XRGB8888))
(kms_writeback:521) DEBUG: Test requirement passed: fb_id > 0
(kms_writeback:521) igt_kms-DEBUG: display: DSI-1: set_pipe(A)
(kms_writeback:521) igt_kms-DEBUG: display: DSI-1: Selecting pipe A
(kms_writeback:521) igt_fb-DEBUG: igt_create_fb_with_bo_size(width=1080, height=2400, format=XR24(0x34325258), modifier=0x0, size=0)
(kms_writeback:521) igt_fb-DEBUG: igt_create_fb_with_bo_size(handle=3, pitch=4352)
(kms_writeback:521) ioctl_wrappers-DEBUG: Test requirement passed: igt_has_fb_modifiers(fd)
(kms_writeback:521) igt_fb-DEBUG: igt_create_fb_with_bo_size(width=1080, height=2400, format=XR24(0x34325258), modifier=0x0, size=0)
(kms_writeback:521) igt_fb-DEBUG: igt_create_fb_with_bo_size(handle=4, pitch=4352)
(kms_writeback:521) ioctl_wrappers-DEBUG: Test requirement passed: igt_has_fb_modifiers(fd)
(kms_writeback:521) DEBUG: Test requirement passed: fb_id > 0
(kms_writeback:521) igt_kms-DEBUG: display: A.0: plane_set_fb(110)
(kms_writeback:521) igt_kms-DEBUG: display: A.0: plane_set_size (1080x2400)
(kms_writeback:521) igt_kms-DEBUG: display: A.0: fb_set_position(0,0)
(kms_writeback:521) igt_kms-DEBUG: display: A.0: fb_set_size(1080x2400)
(kms_writeback:521) igt_kms-DEBUG: display: Writeback-1: output_set_writeback_fb(112)
(kms_writeback:521) igt_kms-DEBUG: display: commit {
(kms_writeback:521) igt_kms-DEBUG: Pipe A: Setting property "MODE_ID" to 0x6d/109
(kms_writeback:521) igt_kms-DEBUG: Pipe A: Setting property "ACTIVE" to 0x1/1
(kms_writeback:521) igt_kms-DEBUG: display: populating plane data: A.0, fb 110
(kms_writeback:521) igt_kms-DEBUG: plane A.0: Setting property "SRC_X" to 0x0/0
(kms_writeback:521) igt_kms-DEBUG: plane A.0: Setting property "SRC_Y" to 0x0/0
(kms_writeback:521) igt_kms-DEBUG: plane A.0: Setting property "SRC_W" to 0x4380000/70778880
(kms_writeback:521) igt_kms-DEBUG: plane A.0: Setting property "SRC_H" to 0x9600000/157286400
(kms_writeback:521) igt_kms-DEBUG: plane A.0: Setting property "CRTC_W" to 0x438/1080
(kms_writeback:521) igt_kms-DEBUG: plane A.0: Setting property "CRTC_H" to 0x960/2400
(kms_writeback:521) igt_kms-DEBUG: plane A.0: Setting property "FB_ID" to 0x6e/110
(kms_writeback:521) igt_kms-DEBUG: plane A.0: Setting property "CRTC_ID" to 0x67/103
(kms_writeback:521) igt_kms-DEBUG: display: DSI-1: preparing atomic, pipe: A
(kms_writeback:521) igt_kms-DEBUG: DSI-1: Setting property "CRTC_ID" to 0x67/103
(kms_writeback:521) igt_kms-DEBUG: display: Writeback-1: preparing atomic, pipe: A
(kms_writeback:521) igt_kms-DEBUG: Writeback-1: Setting property "WRITEBACK_FB_ID" to 0x70/112
(kms_writeback:521) igt_kms-DEBUG: Writeback-1: Setting property "WRITEBACK_OUT_FENCE_PTR" to 0x3a4958f8/977885432
(kms_writeback:521) igt_kms-DEBUG: display: }
(kms_writeback:521) igt_fb-DEBUG: Test requirement passed: cairo_surface_status(fb->cairo_surface) == CAIRO_STATUS_SUCCESS
(kms_writeback:521) igt_kms-DEBUG: display: DSI-1: set_pipe(None)
(kms_writeback:521) igt_kms-DEBUG: display: DSI-1: Selecting pipe None
(kms_writeback:521) igt_kms-DEBUG: display: commit {
(kms_writeback:521) igt_kms-DEBUG: Pipe A: Setting property "MODE_ID" to 0x6b/107
(kms_writeback:521) igt_kms-DEBUG: display: DSI-1: preparing atomic, pipe: None
(kms_writeback:521) igt_kms-DEBUG: DSI-1: Setting property "CRTC_ID" to 0x0/0
(kms_writeback:521) igt_kms-DEBUG: display: }
(kms_writeback:521) igt_kms-DEBUG: display: DP-1: set_pipe(A)
(kms_writeback:521) igt_kms-DEBUG: display: DP-1: Selecting pipe A
(kms_writeback:521) igt_fb-DEBUG: igt_create_fb_with_bo_size(width=0, height=0, format=XR24(0x34325258), modifier=0x0, size=0)
(kms_writeback:521) igt_kms-CRITICAL: Test assertion failure function kmstest_dumb_create, file /usr/src/debug/igt-gpu-tools/1.28/lib/igt_kms.c:1301:
(kms_writeback:521) igt_kms-CRITICAL: Failed assertion: igt_ioctl((fd), ((((2U|1U) << (((0+8)+8)+14)) | ((('d')) << (0+8)) | (((0xB2)) << 0) | ((((sizeof(struct drm_mode_create_dumb)))) << ((0+8)+8)))), (&create)) == 0
(kms_writeback:521) igt_kms-CRITICAL: Last errno: 22, Invalid argument
(kms_writeback:521) igt_kms-CRITICAL: error: -1 != 0
(kms_writeback:521) igt_core-INFO: Stack trace:
(kms_writeback:521) igt_core-INFO: #0 [igt_nsec_elapsed+0x500]
**** END ****
I'll try with an enabled DP connector.
Neil
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);
}