| Message ID | 20240924-concurrent-wb-v2-15-7849f900e863@quicinc.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | drm/msm/dpu: Add Concurrent Writeback Support for DPU 10.x+ | expand |
On Tue, Sep 24, 2024 at 03:59:31PM GMT, Jessica Zhang wrote: > Add support for RM to reserve dedicated CWB pingpongs and CWB muxes > > For concurrent writeback, even-indexed CWB muxes must be assigned to > even-indexed LMs and odd-indexed CWB muxes for odd-indexed LMs. The same > even/odd rule applies for dedicated CWB pingpongs. > > Track the CWB muxes in the global state and add a CWB-specific helper to > reserve the correct CWB muxes and dedicated pingpongs following the > even/odd rule. > > Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 34 ++++++++++-- > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h | 2 + > drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 1 + > drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 84 +++++++++++++++++++++++++++++ > 4 files changed, 117 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > index 36b677cf9c7a..b2f0bf412451 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > @@ -2,7 +2,7 @@ > /* > * Copyright (C) 2013 Red Hat > * Copyright (c) 2014-2018, 2020-2021 The Linux Foundation. All rights reserved. > - * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved. > + * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved. > * > * Author: Rob Clark <robdclark@gmail.com> > */ > @@ -28,6 +28,7 @@ > #include "dpu_hw_dsc.h" > #include "dpu_hw_merge3d.h" > #include "dpu_hw_cdm.h" > +#include "dpu_hw_cwb.h" > #include "dpu_formats.h" > #include "dpu_encoder_phys.h" > #include "dpu_crtc.h" > @@ -133,6 +134,9 @@ enum dpu_enc_rc_states { > * @cur_slave: As above but for the slave encoder. > * @hw_pp: Handle to the pingpong blocks used for the display. No. > * pingpong blocks can be different than num_phys_encs. > + * @hw_cwb: Handle to the CWB muxes used for concurrent writeback > + * display. Number of CWB muxes can be different than > + * num_phys_encs. > * @hw_dsc: Handle to the DSC blocks used for the display. > * @dsc_mask: Bitmask of used DSC blocks. > * @intfs_swapped: Whether or not the phys_enc interfaces have been swapped > @@ -177,6 +181,7 @@ struct dpu_encoder_virt { > struct dpu_encoder_phys *cur_master; > struct dpu_encoder_phys *cur_slave; > struct dpu_hw_pingpong *hw_pp[MAX_CHANNELS_PER_ENC]; > + struct dpu_hw_cwb *hw_cwb[MAX_CHANNELS_PER_ENC]; > struct dpu_hw_dsc *hw_dsc[MAX_CHANNELS_PER_ENC]; > > unsigned int dsc_mask; > @@ -1053,7 +1058,10 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc, > struct dpu_hw_blk *hw_pp[MAX_CHANNELS_PER_ENC]; > struct dpu_hw_blk *hw_ctl[MAX_CHANNELS_PER_ENC]; > struct dpu_hw_blk *hw_dsc[MAX_CHANNELS_PER_ENC]; > + struct dpu_hw_blk *hw_cwb[MAX_CHANNELS_PER_ENC]; > int num_pp, num_dsc; > + int num_cwb = 0; > + bool is_cwb_encoder; > unsigned int dsc_mask = 0; > int i; > > @@ -1067,6 +1075,8 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc, > > priv = drm_enc->dev->dev_private; > dpu_kms = to_dpu_kms(priv->kms); > + is_cwb_encoder = drm_crtc_in_clone_mode(crtc_state) && > + dpu_enc->disp_info.intf_type == INTF_WB; > > global_state = dpu_kms_get_existing_global_state(dpu_kms); > if (IS_ERR_OR_NULL(global_state)) { > @@ -1077,9 +1087,25 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc, > trace_dpu_enc_mode_set(DRMID(drm_enc)); > > /* Query resource that have been reserved in atomic check step. */ > - num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, > - drm_enc->crtc, DPU_HW_BLK_PINGPONG, hw_pp, > - ARRAY_SIZE(hw_pp)); > + if (is_cwb_encoder) { > + num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, > + drm_enc->crtc, > + DPU_HW_BLK_DCWB_PINGPONG, > + hw_pp, ARRAY_SIZE(hw_pp)); > + num_cwb = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, > + drm_enc->crtc, > + DPU_HW_BLK_CWB, > + hw_cwb, ARRAY_SIZE(hw_cwb)); > + } else { > + num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, > + drm_enc->crtc, > + DPU_HW_BLK_PINGPONG, hw_pp, > + ARRAY_SIZE(hw_pp)); > + } > + > + for (i = 0; i < num_cwb; i++) > + dpu_enc->hw_cwb[i] = to_dpu_hw_cwb(hw_cwb[i]); > + > dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, > drm_enc->crtc, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl)); > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h > index c43cb55fe1d2..34195bf4e270 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h > @@ -77,12 +77,14 @@ enum dpu_hw_blk_type { > DPU_HW_BLK_LM, > DPU_HW_BLK_CTL, > DPU_HW_BLK_PINGPONG, > + DPU_HW_BLK_DCWB_PINGPONG, > DPU_HW_BLK_INTF, > DPU_HW_BLK_WB, > DPU_HW_BLK_DSPP, > DPU_HW_BLK_MERGE_3D, > DPU_HW_BLK_DSC, > DPU_HW_BLK_CDM, > + DPU_HW_BLK_CWB, > DPU_HW_BLK_MAX, > }; > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h > index 4fdc5f933261..a078b5334dc1 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h > @@ -128,6 +128,7 @@ struct dpu_global_state { > uint32_t dspp_to_crtc_id[DSPP_MAX - DSPP_0]; > uint32_t dsc_to_crtc_id[DSC_MAX - DSC_0]; > uint32_t cdm_to_crtc_id; > + uint32_t cwb_to_crtc_id[CWB_MAX - CWB_0]; > }; > > struct dpu_global_state > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c > index 04df3056d75a..429e432e2163 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c > @@ -223,6 +223,54 @@ static int _dpu_rm_get_lm_peer(struct dpu_rm *rm, int primary_idx) > return -EINVAL; > } > > +static int _dpu_rm_reserve_cwb_mux_and_pingpongs(struct dpu_rm *rm, > + struct dpu_global_state *global_state, > + uint32_t crtc_id, > + struct msm_display_topology *topology) > +{ > + int num_cwb_pp = topology->num_lm, cwb_pp_count = 0; > + int cwb_pp_start_idx = PINGPONG_CWB_0 - PINGPONG_0; > + int cwb_pp_idx[MAX_BLOCKS]; > + int cwb_mux_idx[MAX_BLOCKS]; > + > + /* > + * Reserve additional dedicated CWB pingpong blocks and muxes for each s/pingpong/PINGPONG/ globally > + * mixer > + * > + * TODO: add support for reserving non-dedicated CWB pingpong blocks ... on platforms with no dedicated PINGPONG_CWB > + */ > + for (int i = 0; i < ARRAY_SIZE(rm->mixer_blks) && > + cwb_pp_count < num_cwb_pp; i++) { > + for (int j = cwb_pp_start_idx; > + j < ARRAY_SIZE(rm->pingpong_blks); j++) { > + /* > + * Odd LMs must be assigned to odd pingpongs and even > + * LMs with even pingpongs > + */ > + if (reserved_by_other(global_state->pingpong_to_crtc_id, > + j, crtc_id) || i % 2 != j % 2) Carriage return after ||, please. Maybe use single line for reserved_by_other call, it's easier to read this way. > + continue; > + > + cwb_pp_idx[cwb_pp_count] = j; > + cwb_mux_idx[cwb_pp_count] = j - cwb_pp_start_idx; > + cwb_pp_count++; > + break; > + } > + } > + > + if (cwb_pp_count != num_cwb_pp) { > + DPU_ERROR("Unable to reserve all cwb pingpongs\n"); > + return -ENAVAIL; > + } > + > + for (int i = 0; i < cwb_pp_count; i++) { > + global_state->pingpong_to_crtc_id[cwb_pp_idx[i]] = crtc_id; > + global_state->cwb_to_crtc_id[cwb_mux_idx[i]] = crtc_id; > + } > + > + return 0; > +} > + > /** > * _dpu_rm_check_lm_and_get_connected_blks - check if proposed layer mixer meets > * proposed use case requirements, incl. hardwired dependent blocks like > @@ -603,6 +651,14 @@ static int _dpu_rm_make_reservation( > return ret; > } > > + if (topology->cwb_enabled) { > + ret = _dpu_rm_reserve_cwb_mux_and_pingpongs(rm, global_state, > + crtc_id, topology); > + if (ret) { > + DPU_ERROR("unable to find appropriate dcwb pingpongs\n"); Can we have a single error please? There was already one in the reserve-cwb-and-pp function. > + return ret; > + } > + } > > ret = _dpu_rm_reserve_ctls(rm, global_state, crtc_id, > topology); > @@ -653,6 +709,8 @@ void dpu_rm_release(struct dpu_global_state *global_state, > _dpu_rm_clear_mapping(global_state->dspp_to_crtc_id, > ARRAY_SIZE(global_state->dspp_to_crtc_id), crtc_id); > _dpu_rm_clear_mapping(&global_state->cdm_to_crtc_id, 1, crtc_id); > + _dpu_rm_clear_mapping(global_state->cwb_to_crtc_id, > + ARRAY_SIZE(global_state->cwb_to_crtc_id), crtc_id); > } > > int dpu_rm_reserve( > @@ -692,6 +750,7 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm, > > switch (type) { > case DPU_HW_BLK_PINGPONG: > + case DPU_HW_BLK_DCWB_PINGPONG: > hw_blks = rm->pingpong_blks; > hw_to_crtc_id = global_state->pingpong_to_crtc_id; > max_blks = ARRAY_SIZE(rm->pingpong_blks); > @@ -721,6 +780,11 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm, > hw_to_crtc_id = &global_state->cdm_to_crtc_id; > max_blks = 1; > break; > + case DPU_HW_BLK_CWB: > + hw_blks = rm->cwb_blks; > + hw_to_crtc_id = global_state->cwb_to_crtc_id; > + max_blks = ARRAY_SIZE(rm->cwb_blks); > + break; > default: > DPU_ERROR("blk type %d not managed by rm\n", type); > return 0; > @@ -731,6 +795,20 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm, > if (hw_to_crtc_id[i] != crtc_id) > continue; > > + if (type == DPU_HW_BLK_PINGPONG) { > + struct dpu_hw_pingpong *pp = to_dpu_hw_pingpong(hw_blks[i]); > + > + if (pp->idx >= PINGPONG_CWB_0) > + continue; > + } > + > + if (type == DPU_HW_BLK_DCWB_PINGPONG) { > + struct dpu_hw_pingpong *pp = to_dpu_hw_pingpong(hw_blks[i]); > + > + if (pp->idx < PINGPONG_CWB_0) > + continue; > + } > + > if (num_blks == blks_size) { > DPU_ERROR("More than %d resources assigned to crtc %d\n", > blks_size, crtc_id); > @@ -801,4 +879,10 @@ void dpu_rm_print_state(struct drm_printer *p, > dpu_rm_print_state_helper(p, rm->cdm_blk, > global_state->cdm_to_crtc_id); > drm_puts(p, "\n"); > + > + drm_puts(p, "\tcwb="); > + for (i = 0; i < ARRAY_SIZE(global_state->cwb_to_crtc_id); i++) > + dpu_rm_print_state_helper(p, rm->cwb_blks[i], > + global_state->cwb_to_crtc_id[i]); > + drm_puts(p, "\n"); > } > > -- > 2.34.1 >
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 36b677cf9c7a..b2f0bf412451 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -2,7 +2,7 @@ /* * Copyright (C) 2013 Red Hat * Copyright (c) 2014-2018, 2020-2021 The Linux Foundation. All rights reserved. - * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved. * * Author: Rob Clark <robdclark@gmail.com> */ @@ -28,6 +28,7 @@ #include "dpu_hw_dsc.h" #include "dpu_hw_merge3d.h" #include "dpu_hw_cdm.h" +#include "dpu_hw_cwb.h" #include "dpu_formats.h" #include "dpu_encoder_phys.h" #include "dpu_crtc.h" @@ -133,6 +134,9 @@ enum dpu_enc_rc_states { * @cur_slave: As above but for the slave encoder. * @hw_pp: Handle to the pingpong blocks used for the display. No. * pingpong blocks can be different than num_phys_encs. + * @hw_cwb: Handle to the CWB muxes used for concurrent writeback + * display. Number of CWB muxes can be different than + * num_phys_encs. * @hw_dsc: Handle to the DSC blocks used for the display. * @dsc_mask: Bitmask of used DSC blocks. * @intfs_swapped: Whether or not the phys_enc interfaces have been swapped @@ -177,6 +181,7 @@ struct dpu_encoder_virt { struct dpu_encoder_phys *cur_master; struct dpu_encoder_phys *cur_slave; struct dpu_hw_pingpong *hw_pp[MAX_CHANNELS_PER_ENC]; + struct dpu_hw_cwb *hw_cwb[MAX_CHANNELS_PER_ENC]; struct dpu_hw_dsc *hw_dsc[MAX_CHANNELS_PER_ENC]; unsigned int dsc_mask; @@ -1053,7 +1058,10 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc, struct dpu_hw_blk *hw_pp[MAX_CHANNELS_PER_ENC]; struct dpu_hw_blk *hw_ctl[MAX_CHANNELS_PER_ENC]; struct dpu_hw_blk *hw_dsc[MAX_CHANNELS_PER_ENC]; + struct dpu_hw_blk *hw_cwb[MAX_CHANNELS_PER_ENC]; int num_pp, num_dsc; + int num_cwb = 0; + bool is_cwb_encoder; unsigned int dsc_mask = 0; int i; @@ -1067,6 +1075,8 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc, priv = drm_enc->dev->dev_private; dpu_kms = to_dpu_kms(priv->kms); + is_cwb_encoder = drm_crtc_in_clone_mode(crtc_state) && + dpu_enc->disp_info.intf_type == INTF_WB; global_state = dpu_kms_get_existing_global_state(dpu_kms); if (IS_ERR_OR_NULL(global_state)) { @@ -1077,9 +1087,25 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc, trace_dpu_enc_mode_set(DRMID(drm_enc)); /* Query resource that have been reserved in atomic check step. */ - num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, - drm_enc->crtc, DPU_HW_BLK_PINGPONG, hw_pp, - ARRAY_SIZE(hw_pp)); + if (is_cwb_encoder) { + num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, + drm_enc->crtc, + DPU_HW_BLK_DCWB_PINGPONG, + hw_pp, ARRAY_SIZE(hw_pp)); + num_cwb = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, + drm_enc->crtc, + DPU_HW_BLK_CWB, + hw_cwb, ARRAY_SIZE(hw_cwb)); + } else { + num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, + drm_enc->crtc, + DPU_HW_BLK_PINGPONG, hw_pp, + ARRAY_SIZE(hw_pp)); + } + + for (i = 0; i < num_cwb; i++) + dpu_enc->hw_cwb[i] = to_dpu_hw_cwb(hw_cwb[i]); + dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, drm_enc->crtc, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl)); diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h index c43cb55fe1d2..34195bf4e270 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h @@ -77,12 +77,14 @@ enum dpu_hw_blk_type { DPU_HW_BLK_LM, DPU_HW_BLK_CTL, DPU_HW_BLK_PINGPONG, + DPU_HW_BLK_DCWB_PINGPONG, DPU_HW_BLK_INTF, DPU_HW_BLK_WB, DPU_HW_BLK_DSPP, DPU_HW_BLK_MERGE_3D, DPU_HW_BLK_DSC, DPU_HW_BLK_CDM, + DPU_HW_BLK_CWB, DPU_HW_BLK_MAX, }; diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h index 4fdc5f933261..a078b5334dc1 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h @@ -128,6 +128,7 @@ struct dpu_global_state { uint32_t dspp_to_crtc_id[DSPP_MAX - DSPP_0]; uint32_t dsc_to_crtc_id[DSC_MAX - DSC_0]; uint32_t cdm_to_crtc_id; + uint32_t cwb_to_crtc_id[CWB_MAX - CWB_0]; }; struct dpu_global_state diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c index 04df3056d75a..429e432e2163 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c @@ -223,6 +223,54 @@ static int _dpu_rm_get_lm_peer(struct dpu_rm *rm, int primary_idx) return -EINVAL; } +static int _dpu_rm_reserve_cwb_mux_and_pingpongs(struct dpu_rm *rm, + struct dpu_global_state *global_state, + uint32_t crtc_id, + struct msm_display_topology *topology) +{ + int num_cwb_pp = topology->num_lm, cwb_pp_count = 0; + int cwb_pp_start_idx = PINGPONG_CWB_0 - PINGPONG_0; + int cwb_pp_idx[MAX_BLOCKS]; + int cwb_mux_idx[MAX_BLOCKS]; + + /* + * Reserve additional dedicated CWB pingpong blocks and muxes for each + * mixer + * + * TODO: add support for reserving non-dedicated CWB pingpong blocks + */ + for (int i = 0; i < ARRAY_SIZE(rm->mixer_blks) && + cwb_pp_count < num_cwb_pp; i++) { + for (int j = cwb_pp_start_idx; + j < ARRAY_SIZE(rm->pingpong_blks); j++) { + /* + * Odd LMs must be assigned to odd pingpongs and even + * LMs with even pingpongs + */ + if (reserved_by_other(global_state->pingpong_to_crtc_id, + j, crtc_id) || i % 2 != j % 2) + continue; + + cwb_pp_idx[cwb_pp_count] = j; + cwb_mux_idx[cwb_pp_count] = j - cwb_pp_start_idx; + cwb_pp_count++; + break; + } + } + + if (cwb_pp_count != num_cwb_pp) { + DPU_ERROR("Unable to reserve all cwb pingpongs\n"); + return -ENAVAIL; + } + + for (int i = 0; i < cwb_pp_count; i++) { + global_state->pingpong_to_crtc_id[cwb_pp_idx[i]] = crtc_id; + global_state->cwb_to_crtc_id[cwb_mux_idx[i]] = crtc_id; + } + + return 0; +} + /** * _dpu_rm_check_lm_and_get_connected_blks - check if proposed layer mixer meets * proposed use case requirements, incl. hardwired dependent blocks like @@ -603,6 +651,14 @@ static int _dpu_rm_make_reservation( return ret; } + if (topology->cwb_enabled) { + ret = _dpu_rm_reserve_cwb_mux_and_pingpongs(rm, global_state, + crtc_id, topology); + if (ret) { + DPU_ERROR("unable to find appropriate dcwb pingpongs\n"); + return ret; + } + } ret = _dpu_rm_reserve_ctls(rm, global_state, crtc_id, topology); @@ -653,6 +709,8 @@ void dpu_rm_release(struct dpu_global_state *global_state, _dpu_rm_clear_mapping(global_state->dspp_to_crtc_id, ARRAY_SIZE(global_state->dspp_to_crtc_id), crtc_id); _dpu_rm_clear_mapping(&global_state->cdm_to_crtc_id, 1, crtc_id); + _dpu_rm_clear_mapping(global_state->cwb_to_crtc_id, + ARRAY_SIZE(global_state->cwb_to_crtc_id), crtc_id); } int dpu_rm_reserve( @@ -692,6 +750,7 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm, switch (type) { case DPU_HW_BLK_PINGPONG: + case DPU_HW_BLK_DCWB_PINGPONG: hw_blks = rm->pingpong_blks; hw_to_crtc_id = global_state->pingpong_to_crtc_id; max_blks = ARRAY_SIZE(rm->pingpong_blks); @@ -721,6 +780,11 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm, hw_to_crtc_id = &global_state->cdm_to_crtc_id; max_blks = 1; break; + case DPU_HW_BLK_CWB: + hw_blks = rm->cwb_blks; + hw_to_crtc_id = global_state->cwb_to_crtc_id; + max_blks = ARRAY_SIZE(rm->cwb_blks); + break; default: DPU_ERROR("blk type %d not managed by rm\n", type); return 0; @@ -731,6 +795,20 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm, if (hw_to_crtc_id[i] != crtc_id) continue; + if (type == DPU_HW_BLK_PINGPONG) { + struct dpu_hw_pingpong *pp = to_dpu_hw_pingpong(hw_blks[i]); + + if (pp->idx >= PINGPONG_CWB_0) + continue; + } + + if (type == DPU_HW_BLK_DCWB_PINGPONG) { + struct dpu_hw_pingpong *pp = to_dpu_hw_pingpong(hw_blks[i]); + + if (pp->idx < PINGPONG_CWB_0) + continue; + } + if (num_blks == blks_size) { DPU_ERROR("More than %d resources assigned to crtc %d\n", blks_size, crtc_id); @@ -801,4 +879,10 @@ void dpu_rm_print_state(struct drm_printer *p, dpu_rm_print_state_helper(p, rm->cdm_blk, global_state->cdm_to_crtc_id); drm_puts(p, "\n"); + + drm_puts(p, "\tcwb="); + for (i = 0; i < ARRAY_SIZE(global_state->cwb_to_crtc_id); i++) + dpu_rm_print_state_helper(p, rm->cwb_blks[i], + global_state->cwb_to_crtc_id[i]); + drm_puts(p, "\n"); }
Add support for RM to reserve dedicated CWB pingpongs and CWB muxes For concurrent writeback, even-indexed CWB muxes must be assigned to even-indexed LMs and odd-indexed CWB muxes for odd-indexed LMs. The same even/odd rule applies for dedicated CWB pingpongs. Track the CWB muxes in the global state and add a CWB-specific helper to reserve the correct CWB muxes and dedicated pingpongs following the even/odd rule. Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 34 ++++++++++-- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h | 2 + drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 1 + drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 84 +++++++++++++++++++++++++++++ 4 files changed, 117 insertions(+), 4 deletions(-)