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Tue, 17 Dec 2024 00:43:28 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA04.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4BH0hRtn018366 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Dec 2024 00:43:27 GMT Received: from jesszhan-linux.qualcomm.com (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Mon, 16 Dec 2024 16:43:27 -0800 From: Jessica Zhang Date: Mon, 16 Dec 2024 16:43:18 -0800 Subject: [PATCH v4 07/25] drm/msm/dpu: move resource allocation to CRTC MIME-Version: 1.0 Message-ID: <20241216-concurrent-wb-v4-7-fe220297a7f0@quicinc.com> References: <20241216-concurrent-wb-v4-0-fe220297a7f0@quicinc.com> In-Reply-To: <20241216-concurrent-wb-v4-0-fe220297a7f0@quicinc.com> To: Rob Clark , Dmitry Baryshkov , , Sean Paul , Marijn Suijten , "David Airlie" , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Simona Vetter , Simona Vetter CC: , , , , , Rob Clark , =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , "Jessica Zhang" X-Mailer: b4 0.15-dev-355e8 X-Developer-Signature: v=1; a=ed25519-sha256; t=1734396205; l=16508; i=quic_jesszhan@quicinc.com; s=20230329; h=from:subject:message-id; bh=Ncl7BAoO0j/MjFaiTtwjrNXrCvcuvjtWHzJCktRZzX8=; b=iqja/UnNOZ9CIj7Z+KTanQ/NhK9wD1VF5JN3BrlfZeKaGATtnCwAcHImUMwjrJalSSRUDsLd/ kYDxRjXWq8HC2iYHVsRZWegWFKB6FLWAaKGF0QH2bidE7+b+phUNHYZ X-Developer-Key: i=quic_jesszhan@quicinc.com; a=ed25519; pk=gAUCgHZ6wTJOzQa3U0GfeCDH7iZLlqIEPo4rrjfDpWE= X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: bNtr3UcWfzQ9WhGvTjPSp_vqNWuq-6E_ X-Proofpoint-GUID: bNtr3UcWfzQ9WhGvTjPSp_vqNWuq-6E_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 mlxscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 phishscore=0 adultscore=0 clxscore=1015 mlxlogscore=999 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412170004 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Dmitry Baryshkov All resource allocation is centered around the LMs. Then other blocks (except DSCs) are allocated basing on the LMs that was selected, and LM powers up the CRTC rather than the encoder. Moreover if at some point the driver supports encoder cloning, allocating resources from the encoder will be incorrect, as all clones will have different encoder IDs, while LMs are to be shared by these encoders. Signed-off-by: Dmitry Baryshkov [quic_abhinavk@quicinc.com: Refactored resource allocation for CDM] Signed-off-by: Abhinav Kumar [quic_jesszhan@quicinc.com: Changed to grabbing exising global state] Signed-off-by: Jessica Zhang Reviewed-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 86 ++++++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 256 ++++++++++------------------ drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 8 + 3 files changed, 181 insertions(+), 169 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index 9f6ffd344693ecfb633095772a31ada5613345dc..186ed84f59f16997716fe216e635b8dce07a63a1 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -1182,6 +1182,78 @@ static bool dpu_crtc_needs_dirtyfb(struct drm_crtc_state *cstate) return false; } +#define MAX_HDISPLAY_SPLIT 1080 + +static struct msm_display_topology dpu_crtc_get_topology( + struct drm_crtc *crtc, + struct dpu_kms *dpu_kms, + struct drm_crtc_state *crtc_state) +{ + struct drm_display_mode *mode = &crtc_state->adjusted_mode; + struct msm_display_topology topology = {0}; + struct drm_encoder *drm_enc; + + drm_for_each_encoder_mask(drm_enc, crtc->dev, crtc_state->encoder_mask) + dpu_encoder_update_topology(drm_enc, &topology, crtc_state->state, + &crtc_state->adjusted_mode); + + /* + * Datapath topology selection + * + * Dual display + * 2 LM, 2 INTF ( Split display using 2 interfaces) + * + * Single display + * 1 LM, 1 INTF + * 2 LM, 1 INTF (stream merge to support high resolution interfaces) + * + * Add dspps to the reservation requirements if ctm is requested + */ + + if (topology.num_intf == 2) + topology.num_lm = 2; + else if (topology.num_dsc == 2) + topology.num_lm = 2; + else if (dpu_kms->catalog->caps->has_3d_merge) + topology.num_lm = (mode->hdisplay > MAX_HDISPLAY_SPLIT) ? 2 : 1; + else + topology.num_lm = 1; + + if (crtc_state->ctm) + topology.num_dspp = topology.num_lm; + + return topology; +} + +static int dpu_crtc_assign_resources(struct drm_crtc *crtc, struct drm_crtc_state *crtc_state) +{ + struct dpu_kms *dpu_kms = _dpu_crtc_get_kms(crtc); + struct dpu_global_state *global_state; + struct msm_display_topology topology; + int ret; + + /* + * Release and Allocate resources on every modeset + * Dont allocate when enable is false. + */ + global_state = dpu_kms_get_existing_global_state(dpu_kms); + if (IS_ERR(global_state)) + return PTR_ERR(global_state); + + dpu_rm_release(global_state, crtc); + + if (!crtc_state->enable) + return 0; + + topology = dpu_crtc_get_topology(crtc, dpu_kms, crtc_state); + ret = dpu_rm_reserve(&dpu_kms->rm, global_state, + crtc, &topology); + if (ret) + return ret; + + return 0; +} + static int dpu_crtc_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state) { @@ -1193,10 +1265,24 @@ static int dpu_crtc_atomic_check(struct drm_crtc *crtc, const struct drm_plane_state *pstate; struct drm_plane *plane; + struct drm_encoder *drm_enc; + int rc = 0; bool needs_dirtyfb = dpu_crtc_needs_dirtyfb(crtc_state); + /* there might be cases where encoder needs a modeset too */ + drm_for_each_encoder_mask(drm_enc, crtc->dev, crtc_state->encoder_mask) { + if (dpu_encoder_needs_modeset(drm_enc, crtc_state->state)) + crtc_state->mode_changed = true; + } + + if (drm_atomic_crtc_needs_modeset(crtc_state)) { + rc = dpu_crtc_assign_resources(crtc, crtc_state); + if (rc < 0) + return rc; + } + if (!crtc_state->enable || !drm_atomic_crtc_effectively_active(crtc_state)) { DRM_DEBUG_ATOMIC("crtc%d -> enable %d, active %d, skip atomic_check\n", crtc->base.id, crtc_state->enable, diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index e6f930dd34566d01223823de82c922668e6be300..2b999a0558b2a016644ed5d25bf54ab45c38d1d9 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -58,8 +58,6 @@ #define IDLE_SHORT_TIMEOUT 1 -#define MAX_HDISPLAY_SPLIT 1080 - /* timeout in frames waiting for frame done */ #define DPU_ENCODER_FRAME_DONE_TIMEOUT_FRAMES 5 @@ -609,206 +607,127 @@ void dpu_encoder_helper_split_config( } } -/** - * dpu_encoder_use_dsc_merge - returns true if the encoder uses DSC merge topology. - * @drm_enc: Pointer to previously created drm encoder structure - */ -bool dpu_encoder_use_dsc_merge(struct drm_encoder *drm_enc) +void dpu_encoder_update_topology(struct drm_encoder *drm_enc, + struct msm_display_topology *topology, + struct drm_atomic_state *state, + const struct drm_display_mode *adj_mode) { struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); - int i, intf_count = 0, num_dsc = 0; + struct drm_connector *connector; + struct drm_connector_state *conn_state; + struct msm_display_info *disp_info; + struct drm_framebuffer *fb; + struct msm_drm_private *priv; + int i; for (i = 0; i < MAX_PHYS_ENCODERS_PER_VIRTUAL; i++) if (dpu_enc->phys_encs[i]) - intf_count++; + topology->num_intf++; - /* See dpu_encoder_get_topology, we only support 2:2:1 topology */ + /* We only support 2 DSC mode (with 2 LM and 1 INTF) */ if (dpu_enc->dsc) - num_dsc = 2; - - return (num_dsc > 0) && (num_dsc > intf_count); -} - -/** - * dpu_encoder_get_dsc_config - get DSC config for the DPU encoder - * This helper function is used by physical encoder to get DSC config - * used for this encoder. - * @drm_enc: Pointer to encoder structure - */ -struct drm_dsc_config *dpu_encoder_get_dsc_config(struct drm_encoder *drm_enc) -{ - struct msm_drm_private *priv = drm_enc->dev->dev_private; - struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); - int index = dpu_enc->disp_info.h_tile_instance[0]; + topology->num_dsc += 2; - if (dpu_enc->disp_info.intf_type == INTF_DSI) - return msm_dsi_get_dsc_config(priv->dsi[index]); + connector = drm_atomic_get_new_connector_for_encoder(state, drm_enc); + if (!connector) + return; + conn_state = drm_atomic_get_new_connector_state(state, connector); + if (!conn_state) + return; - return NULL; -} + disp_info = &dpu_enc->disp_info; -static struct msm_display_topology dpu_encoder_get_topology( - struct dpu_encoder_virt *dpu_enc, - struct dpu_kms *dpu_kms, - struct drm_display_mode *mode, - struct drm_crtc_state *crtc_state, - struct drm_dsc_config *dsc) -{ - struct msm_display_topology topology = {0}; - int i, intf_count = 0; + priv = drm_enc->dev->dev_private; - for (i = 0; i < MAX_PHYS_ENCODERS_PER_VIRTUAL; i++) - if (dpu_enc->phys_encs[i]) - intf_count++; - - /* Datapath topology selection - * - * Dual display - * 2 LM, 2 INTF ( Split display using 2 interfaces) - * - * Single display - * 1 LM, 1 INTF - * 2 LM, 1 INTF (stream merge to support high resolution interfaces) - * - * Add dspps to the reservation requirements if ctm is requested + /* + * Use CDM only for writeback or DP at the moment as other interfaces cannot handle it. + * If writeback itself cannot handle cdm for some reason it will fail in its atomic_check() + * earlier. */ - if (intf_count == 2) - topology.num_lm = 2; - else if (!dpu_kms->catalog->caps->has_3d_merge) - topology.num_lm = 1; - else - topology.num_lm = (mode->hdisplay > MAX_HDISPLAY_SPLIT) ? 2 : 1; - - if (crtc_state->ctm) - topology.num_dspp = topology.num_lm; - - topology.num_intf = intf_count; + if (disp_info->intf_type == INTF_WB && conn_state->writeback_job) { + fb = conn_state->writeback_job->fb; - if (dsc) { - /* - * In case of Display Stream Compression (DSC), we would use - * 2 DSC encoders, 2 layer mixers and 1 interface - * this is power optimal and can drive up to (including) 4k - * screens - */ - topology.num_dsc = 2; - topology.num_lm = 2; - topology.num_intf = 1; + if (fb && MSM_FORMAT_IS_YUV(msm_framebuffer_format(fb))) + topology->needs_cdm = true; + } else if (disp_info->intf_type == INTF_DP) { + if (msm_dp_is_yuv_420_enabled(priv->dp[disp_info->h_tile_instance[0]], adj_mode)) + topology->needs_cdm = true; } - - return topology; } -static void dpu_encoder_assign_crtc_resources(struct dpu_kms *dpu_kms, - struct drm_encoder *drm_enc, - struct dpu_global_state *global_state, - struct drm_crtc_state *crtc_state) +static bool dpu_encoder_needs_dsc_merge(struct drm_encoder *drm_enc) { - struct dpu_crtc_state *cstate; - struct dpu_hw_blk *hw_ctl[MAX_CHANNELS_PER_ENC]; - struct dpu_hw_blk *hw_lm[MAX_CHANNELS_PER_ENC]; - struct dpu_hw_blk *hw_dspp[MAX_CHANNELS_PER_ENC]; - int num_lm, num_ctl, num_dspp, i; - - cstate = to_dpu_crtc_state(crtc_state); - - memset(cstate->mixers, 0, sizeof(cstate->mixers)); - - num_ctl = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, - drm_enc->crtc, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl)); - num_lm = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, - drm_enc->crtc, DPU_HW_BLK_LM, hw_lm, ARRAY_SIZE(hw_lm)); - num_dspp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, - drm_enc->crtc, DPU_HW_BLK_DSPP, hw_dspp, - ARRAY_SIZE(hw_dspp)); + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); + u32 num_intf = 0; + u32 num_dsc = 0; + int i; - for (i = 0; i < num_lm; i++) { - int ctl_idx = (i < num_ctl) ? i : (num_ctl-1); + for (i = 0; i < MAX_PHYS_ENCODERS_PER_VIRTUAL; i++) + if (dpu_enc->phys_encs[i]) + num_intf++; - cstate->mixers[i].hw_lm = to_dpu_hw_mixer(hw_lm[i]); - cstate->mixers[i].lm_ctl = to_dpu_hw_ctl(hw_ctl[ctl_idx]); - cstate->mixers[i].hw_dspp = i < num_dspp ? to_dpu_hw_dspp(hw_dspp[i]) : NULL; - } + /* We only support 2 DSC mode (with 2 LM and 1 INTF) */ + if (dpu_enc->dsc) + num_dsc += 2; - cstate->num_mixers = num_lm; + return (num_dsc > 0) && (num_dsc > num_intf); } -static int dpu_encoder_virt_atomic_check( - struct drm_encoder *drm_enc, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state) +bool dpu_encoder_needs_modeset(struct drm_encoder *drm_enc, struct drm_atomic_state *state) { - struct dpu_encoder_virt *dpu_enc; - struct msm_drm_private *priv; - struct dpu_kms *dpu_kms; - struct drm_display_mode *adj_mode; - struct msm_display_topology topology; - struct msm_display_info *disp_info; - struct dpu_global_state *global_state; + struct drm_connector *connector; + struct drm_connector_state *conn_state; struct drm_framebuffer *fb; - struct drm_dsc_config *dsc; - int ret = 0; - - if (!drm_enc || !crtc_state || !conn_state) { - DPU_ERROR("invalid arg(s), drm_enc %d, crtc/conn state %d/%d\n", - drm_enc != NULL, crtc_state != NULL, conn_state != NULL); - return -EINVAL; - } - - dpu_enc = to_dpu_encoder_virt(drm_enc); - DPU_DEBUG_ENC(dpu_enc, "\n"); - - priv = drm_enc->dev->dev_private; - disp_info = &dpu_enc->disp_info; - dpu_kms = to_dpu_kms(priv->kms); - adj_mode = &crtc_state->adjusted_mode; - global_state = dpu_kms_get_global_state(crtc_state->state); - if (IS_ERR(global_state)) - return PTR_ERR(global_state); + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); - trace_dpu_enc_atomic_check(DRMID(drm_enc)); + if (!drm_enc || !state) + return false; - dsc = dpu_encoder_get_dsc_config(drm_enc); + connector = drm_atomic_get_new_connector_for_encoder(state, drm_enc); + if (!connector) + return false; - topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode, crtc_state, dsc); + conn_state = drm_atomic_get_new_connector_state(state, connector); - /* - * Use CDM only for writeback or DP at the moment as other interfaces cannot handle it. - * If writeback itself cannot handle cdm for some reason it will fail in its atomic_check() - * earlier. - */ - if (disp_info->intf_type == INTF_WB && conn_state->writeback_job) { + if (dpu_enc->disp_info.intf_type == INTF_WB && conn_state->writeback_job) { fb = conn_state->writeback_job->fb; - - if (fb && MSM_FORMAT_IS_YUV(msm_framebuffer_format(fb))) - topology.needs_cdm = true; - } else if (disp_info->intf_type == INTF_DP) { - if (msm_dp_is_yuv_420_enabled(priv->dp[disp_info->h_tile_instance[0]], adj_mode)) - topology.needs_cdm = true; + if (fb && MSM_FORMAT_IS_YUV(msm_framebuffer_format(fb))) { + if (!dpu_enc->cur_master->hw_cdm) + return true; + } else { + if (dpu_enc->cur_master->hw_cdm) + return true; + } } - if (topology.needs_cdm && !dpu_enc->cur_master->hw_cdm) - crtc_state->mode_changed = true; - else if (!topology.needs_cdm && dpu_enc->cur_master->hw_cdm) - crtc_state->mode_changed = true; - /* - * Release and Allocate resources on every modeset - * Dont allocate when active is false. - */ - if (drm_atomic_crtc_needs_modeset(crtc_state)) { - dpu_rm_release(global_state, crtc_state->crtc); + return false; +} - if (!crtc_state->active_changed || crtc_state->enable) - ret = dpu_rm_reserve(&dpu_kms->rm, global_state, - crtc_state->crtc, &topology); - if (!ret) - dpu_encoder_assign_crtc_resources(dpu_kms, drm_enc, - global_state, crtc_state); - } +/** + * dpu_encoder_get_dsc_config - get DSC config for the DPU encoder + * This helper function is used by physical encoder to get DSC config + * used for this encoder. + * @drm_enc: Pointer to encoder structure + */ +struct drm_dsc_config *dpu_encoder_get_dsc_config(struct drm_encoder *drm_enc) +{ + struct msm_drm_private *priv = drm_enc->dev->dev_private; + struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); + int index = dpu_enc->disp_info.h_tile_instance[0]; - trace_dpu_enc_atomic_check_flags(DRMID(drm_enc), adj_mode->flags); + if (dpu_enc->disp_info.intf_type == INTF_DSI) + return msm_dsi_get_dsc_config(priv->dsi[index]); - return ret; + return NULL; +} + +/** + * dpu_encoder_use_dsc_merge - returns true if the encoder uses DSC merge topology. + * @drm_enc: Pointer to previously created drm encoder structure + */ +bool dpu_encoder_use_dsc_merge(struct drm_encoder *drm_enc) +{ + return dpu_encoder_needs_dsc_merge(drm_enc); } static void _dpu_encoder_update_vsync_source(struct dpu_encoder_virt *dpu_enc, @@ -2627,7 +2546,6 @@ static const struct drm_encoder_helper_funcs dpu_encoder_helper_funcs = { .atomic_mode_set = dpu_encoder_virt_atomic_mode_set, .atomic_disable = dpu_encoder_virt_atomic_disable, .atomic_enable = dpu_encoder_virt_atomic_enable, - .atomic_check = dpu_encoder_virt_atomic_check, }; static const struct drm_encoder_funcs dpu_encoder_funcs = { diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h index 92b5ee390788d16e85e195a664417896a2bf1cae..3db3ea076c377ad5411ec85006bcf4cd9757eb1d 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h @@ -11,6 +11,7 @@ #include #include "dpu_hw_mdss.h" +#include "dpu_kms.h" #define DPU_ENCODER_FRAME_EVENT_DONE BIT(0) #define DPU_ENCODER_FRAME_EVENT_ERROR BIT(1) @@ -80,6 +81,13 @@ int dpu_encoder_get_crc(const struct drm_encoder *drm_enc, u32 *crcs, int pos); bool dpu_encoder_use_dsc_merge(struct drm_encoder *drm_enc); +void dpu_encoder_update_topology(struct drm_encoder *drm_enc, + struct msm_display_topology *topology, + struct drm_atomic_state *state, + const struct drm_display_mode *adj_mode); + +bool dpu_encoder_needs_modeset(struct drm_encoder *drm_enc, struct drm_atomic_state *state); + void dpu_encoder_prepare_wb_job(struct drm_encoder *drm_enc, struct drm_writeback_job *job);