From 6d0d6456084e21ece83b5265a3b26e8bb9077e31 Mon Sep 17 00:00:00 2001 From: Bhawanpreet Lakha Date: Thu, 20 Feb 2020 11:16:14 -0500 Subject: drm/amd/display: Clear link settings on MST disable connector [Why] If we have a single MST display and we disconnect it, we dont disable that link. This causes the old link settings to still exist Now on a replug for MST we think its a link loss and will try to reallocate mst payload which will fail, throwing warning below. [ 129.374192] [drm] Failed to updateMST allocation table forpipe idx:0 [ 129.374206] ------------[ cut here ]------------ [ 129.374284] WARNING: CPU: 14 PID: 1710 at drivers/gpu/drm/amd/amdgpu/../dal-dev/dc/core/dc_link.c:3153 dc_link_allocate_mst_payload+0x1f7/0x220 [amdgpu] [ 129.374285] Modules linked in: amdgpu(OE) amd_iommu_v2 gpu_sched ttm drm_kms_helper drm fb_sys_fops syscopyarea sysfillrect sysimgblt binfmt_misc nls_iso8859_1 edac_mce_amd snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio kvm snd_hda_codec_hdmi snd_hda_intel snd_intel_nhlt snd_hda_codec irqbypass snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi crct10dif_pclmul snd_seq crc32_pclmul ghash_clmulni_intel snd_seq_device snd_timer snd aesni_intel eeepc_wmi crypto_simd asus_wmi joydev cryptd sparse_keymap input_leds soundcore video glue_helper wmi_bmof mxm_wmi k10temp ccp mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid igb i2c_algo_bit ahci dca i2c_piix4 libahci gpio_amdpt wmi gpio_generic [ 129.374318] CPU: 14 PID: 1710 Comm: kworker/14:2 Tainted: G W OE 5.4.0-rc7bhawan+ #480 [ 129.374318] Hardware name: System manufacturer System Product Name/PRIME X370-PRO, BIOS 0515 03/30/2017 [ 129.374397] Workqueue: events dm_irq_work_func [amdgpu] [ 129.374468] RIP: 0010:dc_link_allocate_mst_payload+0x1f7/0x220 [amdgpu] [ 129.374470] Code: 52 20 e8 1c 63 ad f4 48 8b 5d d0 65 48 33 1c 25 28 00 00 00 b8 01 00 00 00 75 16 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b e9 fa fe ff ff e8 ed 5b d6 f3 41 0f b6 b6 c4 02 00 00 48 c7 [ 129.374471] RSP: 0018:ffff9f9141e7fcc0 EFLAGS: 00010246 [ 129.374472] RAX: 0000000000000000 RBX: ffff91ef0762f800 RCX: 0000000000000000 [ 129.374473] RDX: 0000000000000005 RSI: ffffffffc0c4a988 RDI: 0000000000000004 [ 129.374474] RBP: ffff9f9141e7fd10 R08: 0000000000000005 R09: 0000000000000000 [ 129.374475] R10: 0000000000000002 R11: 0000000000000001 R12: ffff91eebd510c00 [ 129.374475] R13: ffff91eebd510e58 R14: ffff91ef052c01b8 R15: 0000000000000006 [ 129.374476] FS: 0000000000000000(0000) GS:ffff91ef0ef80000(0000) knlGS:0000000000000000 [ 129.374477] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 129.374478] CR2: 000055623ea01d50 CR3: 0000000408a8c000 CR4: 00000000003406e0 [ 129.374479] Call Trace: [ 129.374550] dc_link_reallocate_mst_payload+0x12e/0x150 [amdgpu] [ 129.374617] dc_link_handle_hpd_rx_irq+0x6d4/0x6e0 [amdgpu] [ 129.374693] handle_hpd_rx_irq+0x77/0x310 [amdgpu] [ 129.374768] dm_irq_work_func+0x53/0x70 [amdgpu] [ 129.374774] process_one_work+0x1fd/0x3f0 [ 129.374776] worker_thread+0x255/0x410 [ 129.374778] kthread+0x121/0x140 [ 129.374780] ? process_one_work+0x3f0/0x3f0 [ 129.374781] ? kthread_park+0x90/0x90 [ 129.374785] ret_from_fork+0x22/0x40 [How] when we disable MST we should clear the cur link settings (lane_count=0 is good enough). This will cause us to not reallocate payloads earlier than expected and not throw the warning Signed-off-by: Bhawanpreet Lakha Reviewed-by: Hersen Wu Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 0ef0eeb16778..4837640530ad 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -454,6 +454,7 @@ static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, aconnector->dc_sink); dc_sink_release(aconnector->dc_sink); aconnector->dc_sink = NULL; + aconnector->dc_link->cur_link_settings.lane_count = 0; } drm_connector_unregister(connector); -- cgit v1.2.3 From e6b11b43cd565cbf69dd67b85ff3dbed18b4d491 Mon Sep 17 00:00:00 2001 From: Wenjing Liu Date: Mon, 24 Feb 2020 17:19:02 -0500 Subject: drm/amd/display: separate FEC capability from fec debug flag [why] FEC capability query should not be affected by debugging decision on whether to disable FEC. We should not determine if display supports FEC by checking debug option. Signed-off-by: Wenjing Liu Reviewed-by: Ashley Thomas Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 4837640530ad..cc1b52b72c0b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -207,7 +207,7 @@ static bool validate_dsc_caps_on_connector(struct amdgpu_dm_connector *aconnecto if (!dc_dsc_parse_dsc_dpcd(aconnector->dc_link->ctx->dc, dsc_caps, NULL, - &dc_sink->sink_dsc_caps.dsc_dec_caps)) + &dc_sink->dsc_caps.dsc_dec_caps)) return false; return true; @@ -262,8 +262,8 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector) #if defined(CONFIG_DRM_AMD_DC_DCN) if (!validate_dsc_caps_on_connector(aconnector)) - memset(&aconnector->dc_sink->sink_dsc_caps, - 0, sizeof(aconnector->dc_sink->sink_dsc_caps)); + memset(&aconnector->dc_sink->dsc_caps, + 0, sizeof(aconnector->dc_sink->dsc_caps)); #endif } } @@ -550,7 +550,7 @@ static void set_dsc_configs_from_fairness_vars(struct dsc_mst_fairness_params *p memset(¶ms[i].timing->dsc_cfg, 0, sizeof(params[i].timing->dsc_cfg)); if (vars[i].dsc_enabled && dc_dsc_compute_config( params[i].sink->ctx->dc->res_pool->dscs[0], - ¶ms[i].sink->sink_dsc_caps.dsc_dec_caps, + ¶ms[i].sink->dsc_caps.dsc_dec_caps, params[i].sink->ctx->dc->debug.dsc_min_slice_height_override, 0, params[i].timing, @@ -571,7 +571,7 @@ static int bpp_x16_from_pbn(struct dsc_mst_fairness_params param, int pbn) kbps = div_u64((u64)pbn * 994 * 8 * 54, 64); dc_dsc_compute_config( param.sink->ctx->dc->res_pool->dscs[0], - ¶m.sink->sink_dsc_caps.dsc_dec_caps, + ¶m.sink->dsc_caps.dsc_dec_caps, param.sink->ctx->dc->debug.dsc_min_slice_height_override, (int) kbps, param.timing, &dsc_config); @@ -768,14 +768,14 @@ static bool compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, params[count].sink = stream->sink; aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context; params[count].port = aconnector->port; - params[count].compression_possible = stream->sink->sink_dsc_caps.dsc_dec_caps.is_dsc_supported; + params[count].compression_possible = stream->sink->dsc_caps.dsc_dec_caps.is_dsc_supported; dc_dsc_get_policy_for_timing(params[count].timing, &dsc_policy); if (!dc_dsc_compute_bandwidth_range( stream->sink->ctx->dc->res_pool->dscs[0], stream->sink->ctx->dc->debug.dsc_min_slice_height_override, dsc_policy.min_target_bpp, dsc_policy.max_target_bpp, - &stream->sink->sink_dsc_caps.dsc_dec_caps, + &stream->sink->dsc_caps.dsc_dec_caps, &stream->timing, ¶ms[count].bw_range)) params[count].bw_range.stream_kbps = dc_bandwidth_in_kbps_from_timing(&stream->timing); @@ -857,7 +857,7 @@ bool compute_mst_dsc_configs_for_state(struct drm_atomic_state *state, if (!aconnector || !aconnector->dc_sink) continue; - if (!aconnector->dc_sink->sink_dsc_caps.dsc_dec_caps.is_dsc_supported) + if (!aconnector->dc_sink->dsc_caps.dsc_dec_caps.is_dsc_supported) continue; if (computed_streams[i]) -- cgit v1.2.3