On Tue, Aug 28, 2018 at 05:39:59PM -0700, Jeykumar Sankaran wrote:
> Prep changes for state based resource management.
>
> Moves all the hw block tracking for the crtc to the state
> object.
Changes in v4...
>
> Signed-off-by: Jeykumar Sankaran <jsa...@codeaurora.org>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 60
> ++++++++++++++++++--------------
> drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h | 22 ++++++------
> 2 files changed, 44 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> index e061847..7ab320d 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> @@ -163,9 +163,9 @@ static void _dpu_crtc_program_lm_output_roi(struct
> drm_crtc *crtc)
> crtc_state = to_dpu_crtc_state(crtc->state);
>
> lm_horiz_position = 0;
> - for (lm_idx = 0; lm_idx < dpu_crtc->num_mixers; lm_idx++) {
> + for (lm_idx = 0; lm_idx < crtc_state->num_mixers; lm_idx++) {
> const struct drm_rect *lm_roi = &crtc_state->lm_bounds[lm_idx];
> - struct dpu_hw_mixer *hw_lm = dpu_crtc->mixers[lm_idx].hw_lm;
> + struct dpu_hw_mixer *hw_lm = crtc_state->mixers[lm_idx].hw_lm;
> struct dpu_hw_mixer_cfg cfg;
>
> if (!lm_roi || !drm_rect_visible(lm_roi))
> @@ -246,7 +246,7 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc
> *crtc,
> fb ? fb->modifier : 0);
>
> /* blend config update */
> - for (lm_idx = 0; lm_idx < dpu_crtc->num_mixers; lm_idx++) {
> + for (lm_idx = 0; lm_idx < cstate->num_mixers; lm_idx++) {
> _dpu_crtc_setup_blend_cfg(mixer + lm_idx,
> pstate, format);
>
> @@ -270,7 +270,7 @@ static void _dpu_crtc_blend_setup_mixer(struct drm_crtc
> *crtc,
> static void _dpu_crtc_blend_setup(struct drm_crtc *crtc)
> {
> struct dpu_crtc *dpu_crtc;
> - struct dpu_crtc_state *dpu_crtc_state;
> + struct dpu_crtc_state *cstate;
> struct dpu_crtc_mixer *mixer;
> struct dpu_hw_ctl *ctl;
> struct dpu_hw_mixer *lm;
> @@ -281,17 +281,17 @@ static void _dpu_crtc_blend_setup(struct drm_crtc *crtc)
> return;
>
> dpu_crtc = to_dpu_crtc(crtc);
> - dpu_crtc_state = to_dpu_crtc_state(crtc->state);
> - mixer = dpu_crtc->mixers;
> + cstate = to_dpu_crtc_state(crtc->state);
> + mixer = cstate->mixers;
>
> DPU_DEBUG("%s\n", dpu_crtc->name);
>
> - if (dpu_crtc->num_mixers > CRTC_DUAL_MIXERS) {
> - DPU_ERROR("invalid number mixers: %d\n", dpu_crtc->num_mixers);
> + if (cstate->num_mixers > CRTC_DUAL_MIXERS) {
This is not possible.
> + DPU_ERROR("invalid number mixers: %d\n", cstate->num_mixers);
> return;
> }
>
> - for (i = 0; i < dpu_crtc->num_mixers; i++) {
> + for (i = 0; i < cstate->num_mixers; i++) {
> if (!mixer[i].hw_lm || !mixer[i].hw_ctl) {
> DPU_ERROR("invalid lm or ctl assigned to mixer\n");
> return;
> @@ -308,7 +308,7 @@ static void _dpu_crtc_blend_setup(struct drm_crtc *crtc)
>
> _dpu_crtc_blend_setup_mixer(crtc, dpu_crtc, mixer);
>
> - for (i = 0; i < dpu_crtc->num_mixers; i++) {
> + for (i = 0; i < cstate->num_mixers; i++) {
> ctl = mixer[i].hw_ctl;
> lm = mixer[i].hw_lm;
>
> @@ -530,7 +530,7 @@ static void _dpu_crtc_setup_mixer_for_encoder(
> struct drm_crtc *crtc,
> struct drm_encoder *enc)
> {
> - struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
> + struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc->state);
> struct dpu_kms *dpu_kms = _dpu_crtc_get_kms(crtc);
> struct dpu_rm *rm = &dpu_kms->rm;
> struct dpu_crtc_mixer *mixer;
> @@ -542,8 +542,8 @@ static void _dpu_crtc_setup_mixer_for_encoder(
> dpu_rm_init_hw_iter(&ctl_iter, enc->base.id, DPU_HW_BLK_CTL);
>
> /* Set up all the mixers and ctls reserved by this encoder */
> - for (i = dpu_crtc->num_mixers; i < ARRAY_SIZE(dpu_crtc->mixers); i++) {
> - mixer = &dpu_crtc->mixers[i];
> + for (i = cstate->num_mixers; i < ARRAY_SIZE(cstate->mixers); i++) {
> + mixer = &cstate->mixers[i];
>
> if (!dpu_rm_get_hw(rm, &lm_iter))
> break;
> @@ -568,7 +568,7 @@ static void _dpu_crtc_setup_mixer_for_encoder(
>
> mixer->encoder = enc;
>
> - dpu_crtc->num_mixers++;
> + cstate->num_mixers++;
> DPU_DEBUG("setup mixer %d: lm %d\n",
> i, mixer->hw_lm->idx - LM_0);
> DPU_DEBUG("setup mixer %d: ctl %d\n",
> @@ -579,11 +579,11 @@ static void _dpu_crtc_setup_mixer_for_encoder(
> static void _dpu_crtc_setup_mixers(struct drm_crtc *crtc)
> {
> struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
> + struct dpu_crtc_state *cstate = to_dpu_crtc_state(crtc->state);
> struct drm_encoder *enc;
>
> - dpu_crtc->num_mixers = 0;
> - dpu_crtc->mixers_swapped = false;
> - memset(dpu_crtc->mixers, 0, sizeof(dpu_crtc->mixers));
> + cstate->num_mixers = 0;
> + memset(cstate->mixers, 0, sizeof(cstate->mixers));
Why is this necessary?
>
> mutex_lock(&dpu_crtc->crtc_lock);
> /* Check for mixers on all encoders attached to this crtc */
> @@ -618,7 +618,7 @@ static void _dpu_crtc_setup_lm_bounds(struct drm_crtc
> *crtc,
> crtc_split_width = _dpu_crtc_get_mixer_width(dpu_crtc, cstate,
> adj_mode);
>
> - for (i = 0; i < dpu_crtc->num_mixers; i++) {
> + for (i = 0; i < cstate->num_mixers; i++) {
> struct drm_rect *r = &cstate->lm_bounds[i];
> r->x1 = crtc_split_width * i;
> r->y1 = 0;
> @@ -635,6 +635,7 @@ static void dpu_crtc_atomic_begin(struct drm_crtc *crtc,
> struct drm_crtc_state *old_state)
> {
> struct dpu_crtc *dpu_crtc;
> + struct dpu_crtc_state *cstate;
> struct drm_encoder *encoder;
> struct drm_device *dev;
> unsigned long flags;
> @@ -654,10 +655,11 @@ static void dpu_crtc_atomic_begin(struct drm_crtc *crtc,
> DPU_DEBUG("crtc%d\n", crtc->base.id);
>
> dpu_crtc = to_dpu_crtc(crtc);
> + cstate = to_dpu_crtc_state(crtc->state);
> dev = crtc->dev;
> smmu_state = &dpu_crtc->smmu_state;
>
> - if (!dpu_crtc->num_mixers) {
> + if (!cstate->num_mixers) {
> _dpu_crtc_setup_mixers(crtc);
> _dpu_crtc_setup_lm_bounds(crtc, crtc->state);
> }
> @@ -684,7 +686,7 @@ static void dpu_crtc_atomic_begin(struct drm_crtc *crtc,
> * it means we are trying to flush a CRTC whose state is disabled:
> * nothing else needs to be done.
> */
> - if (unlikely(!dpu_crtc->num_mixers))
> + if (unlikely(!cstate->num_mixers))
> return;
>
> _dpu_crtc_blend_setup(crtc);
> @@ -748,7 +750,7 @@ static void dpu_crtc_atomic_flush(struct drm_crtc *crtc,
> * it means we are trying to flush a CRTC whose state is disabled:
> * nothing else needs to be done.
> */
> - if (unlikely(!dpu_crtc->num_mixers))
> + if (unlikely(!cstate->num_mixers))
> return;
>
> /*
> @@ -863,7 +865,7 @@ void dpu_crtc_commit_kickoff(struct drm_crtc *crtc)
> * it means we are trying to start a CRTC whose state is disabled:
> * nothing else needs to be done.
> */
> - if (unlikely(!dpu_crtc->num_mixers))
> + if (unlikely(!cstate->num_mixers))
> return;
>
> DPU_ATRACE_BEGIN("crtc_commit");
> @@ -1097,12 +1099,14 @@ static void dpu_crtc_handle_power_event(u32
> event_type, void *arg)
> struct drm_crtc *crtc = arg;
> struct dpu_crtc *dpu_crtc;
> struct drm_encoder *encoder;
> + struct dpu_crtc_state *cstate;
>
> if (!crtc) {
> DPU_ERROR("invalid crtc\n");
> return;
> }
> dpu_crtc = to_dpu_crtc(crtc);
> + cstate = to_dpu_crtc_state(dpu_crtc->base.state);
>
> mutex_lock(&dpu_crtc->crtc_lock);
>
> @@ -1197,9 +1201,8 @@ static void dpu_crtc_disable(struct drm_crtc *crtc)
> dpu_power_handle_unregister_event(dpu_crtc->phandle,
> dpu_crtc->power_event);
>
> - memset(dpu_crtc->mixers, 0, sizeof(dpu_crtc->mixers));
> - dpu_crtc->num_mixers = 0;
> - dpu_crtc->mixers_swapped = false;
> + memset(cstate->mixers, 0, sizeof(cstate->mixers));
Same question here, why is this necessary?
> + cstate->num_mixers = 0;
>
> /* disable clk & bw control until clk & bw properties are set */
> cstate->bw_control = false;
> @@ -1547,6 +1550,8 @@ static int _dpu_debugfs_status_show(struct seq_file *s,
> void *data)
>
> dpu_crtc = s->private;
> crtc = &dpu_crtc->base;
> +
> + drm_modeset_lock(&crtc->mutex, NULL);
When I suggested this, I was hoping you'd put it in a separate patch.
Additionally, you'll probably want modeset_lock_all instead.
> cstate = to_dpu_crtc_state(crtc->state);
>
> mutex_lock(&dpu_crtc->crtc_lock);
> @@ -1558,8 +1563,8 @@ static int _dpu_debugfs_status_show(struct seq_file *s,
> void *data)
>
> seq_puts(s, "\n");
>
> - for (i = 0; i < dpu_crtc->num_mixers; ++i) {
> - m = &dpu_crtc->mixers[i];
> + for (i = 0; i < cstate->num_mixers; ++i) {
> + m = &cstate->mixers[i];
> if (!m->hw_lm)
> seq_printf(s, "\tmixer[%d] has no lm\n", i);
> else if (!m->hw_ctl)
> @@ -1639,6 +1644,7 @@ static int _dpu_debugfs_status_show(struct seq_file *s,
> void *data)
> seq_printf(s, "vblank_enable:%d\n", dpu_crtc->vblank_requested);
>
> mutex_unlock(&dpu_crtc->crtc_lock);
> + drm_modeset_unlock(&crtc->mutex);
>
> return 0;
> }
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
> b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
> index 5e4dc5c..7aa772f 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
> @@ -121,11 +121,6 @@ struct dpu_crtc_frame_event {
> * struct dpu_crtc - virtualized CRTC data structure
> * @base : Base drm crtc structure
> * @name : ASCII description of this crtc
> - * @num_ctls : Number of ctl paths in use
> - * @num_mixers : Number of mixers in use
> - * @mixers_swapped: Whether the mixers have been swapped for left/right
> update
> - * especially in the case of DSC Merge.
> - * @mixers : List of active mixers
> * @event : Pointer to last received drm vblank event. If there is a
> * pending vblank event, this will be non-null.
> * @vsync_count : Running count of received vsync events
> @@ -164,12 +159,6 @@ struct dpu_crtc {
> struct drm_crtc base;
> char name[DPU_CRTC_NAME_SIZE];
>
> - /* HW Resources reserved for the crtc */
> - u32 num_ctls;
> - u32 num_mixers;
> - bool mixers_swapped;
> - struct dpu_crtc_mixer mixers[CRTC_DUAL_MIXERS];
> -
> struct drm_pending_vblank_event *event;
> u32 vsync_count;
>
> @@ -221,6 +210,10 @@ struct dpu_crtc {
> * @property_values: Current crtc property values
> * @input_fence_timeout_ns : Cached input fence timeout, in ns
> * @new_perf: new performance state being requested
> + * @num_mixers : Number of mixers in use
> + * @mixers : List of active mixers
> + * @num_ctls : Number of ctl paths in use
> + * @hw_ctls : List of active ctl paths
> */
> struct dpu_crtc_state {
> struct drm_crtc_state base;
> @@ -232,6 +225,13 @@ struct dpu_crtc_state {
> uint64_t input_fence_timeout_ns;
>
> struct dpu_core_perf_params new_perf;
> +
> + /* HW Resources reserved for the crtc */
> + u32 num_mixers;
> + struct dpu_crtc_mixer mixers[CRTC_DUAL_MIXERS];
> +
> + u32 num_ctls;
> + struct dpu_hw_ctl *hw_ctls[CRTC_DUAL_MIXERS];
> };
>
> #define to_dpu_crtc_state(x) \
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
--
Sean Paul, Software Engineer, Google / Chromium OS
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