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disp: msm: sde: fix release fence signaling in error cases

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Handle release fence/frame-done error signalling for
error case like esd failure, pp_done timeout, interrupt
disable on cpu, etc. It fixes the race condition for
pending_frame count update and also triggers correct
wait function for wr_ptr wait failure.

Change-Id: Iad08f20592c97221a1626bb40e607c398a9812b6
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
This commit is contained in:
Veera Sundaram Sankaran
2019-07-30 12:43:37 -07:00
committed by Dhaval Patel
parent 9081908beb
commit 5a2dfc1e83
3 changed files with 35 additions and 30 deletions
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4
msm/sde/sde_encoder.c
View File

@@ -3362,6 +3362,7 @@ static void sde_encoder_virt_disable(struct drm_encoder *drm_enc)
sde_enc->phys_encs[i]->cont_splash_enabled = false;
sde_enc->phys_encs[i]->connector = NULL;
}
atomic_set(&sde_enc->frame_done_cnt[i], 0);
}
sde_enc->cur_master = NULL;
@@ -3647,8 +3648,7 @@ static void sde_encoder_frame_done_callback(
/* One of the physical encoders has become idle */
for (i = 0; i < sde_enc->num_phys_encs; i++) {
if ((sde_enc->phys_encs[i] == ready_phys) ||
(event & SDE_ENCODER_FRAME_EVENT_ERROR)) {
if (sde_enc->phys_encs[i] == ready_phys) {
SDE_EVT32_VERBOSE(DRMID(drm_enc), i,
atomic_read(&sde_enc->frame_done_cnt[i]));
if (!atomic_add_unless(

3
msm/sde/sde_encoder_phys.h
View File

@@ -365,12 +365,12 @@ struct sde_encoder_phys_cmd_autorefresh {
* struct sde_encoder_phys_cmd - sub-class of sde_encoder_phys to handle command
* mode specific operations
* @base: Baseclass physical encoder structure
* @intf_idx: Intf Block index used by this phys encoder
* @stream_sel: Stream selection for multi-stream interfaces
* @pp_timeout_report_cnt: number of pingpong done irq timeout errors
* @autorefresh: autorefresh feature state
* @pending_vblank_cnt: Atomic counter tracking pending wait for VBLANK
* @pending_vblank_wq: Wait queue for blocking until VBLANK received
* @wr_ptr_wait_success: log wr_ptr_wait success for release fence trigger
*/
struct sde_encoder_phys_cmd {
struct sde_encoder_phys base;
@@ -379,6 +379,7 @@ struct sde_encoder_phys_cmd {
struct sde_encoder_phys_cmd_autorefresh autorefresh;
atomic_t pending_vblank_cnt;
wait_queue_head_t pending_vblank_wq;
bool wr_ptr_wait_success;
};
/**

58
msm/sde/sde_encoder_phys_cmd.c
View File

@@ -461,20 +461,18 @@ static int _sde_encoder_phys_cmd_handle_ppdone_timeout(
conn = phys_enc->connector;
if (atomic_read(&phys_enc->pending_kickoff_cnt) == 0)
/* decrement the kickoff_cnt before checking for ESD status */
if (!atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0))
return 0;
cmd_enc->pp_timeout_report_cnt++;
pending_kickoff_cnt = atomic_read(&phys_enc->pending_kickoff_cnt);
pending_kickoff_cnt = atomic_read(&phys_enc->pending_kickoff_cnt) + 1;
SDE_EVT32(DRMID(phys_enc->parent), phys_enc->hw_pp->idx - PINGPONG_0,
cmd_enc->pp_timeout_report_cnt,
pending_kickoff_cnt,
frame_event);
/* decrement the kickoff_cnt before checking for ESD status */
atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0);
/* check if panel is still sending TE signal or not */
if (sde_connector_esd_status(phys_enc->connector))
goto exit;
@@ -651,13 +649,29 @@ static int _sde_encoder_phys_cmd_wait_for_idle(
to_sde_encoder_phys_cmd(phys_enc);
struct sde_encoder_wait_info wait_info;
bool recovery_events;
int ret, i, pending_cnt;
int ret;
struct sde_hw_ctl *ctl;
if (!phys_enc) {
SDE_ERROR("invalid encoder\n");
return -EINVAL;
}
ctl = phys_enc->hw_ctl;
if (cmd_enc->wr_ptr_wait_success &&
(phys_enc->frame_trigger_mode == FRAME_DONE_WAIT_POSTED_START) &&
ctl->ops.get_scheduler_status &&
(ctl->ops.get_scheduler_status(ctl) & BIT(0)) &&
atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0) &&
phys_enc->parent_ops.handle_frame_done) {
phys_enc->parent_ops.handle_frame_done(
phys_enc->parent, phys_enc,
SDE_ENCODER_FRAME_EVENT_DONE |
SDE_ENCODER_FRAME_EVENT_SIGNAL_RELEASE_FENCE);
return 0;
}
wait_info.wq = &phys_enc->pending_kickoff_wq;
wait_info.atomic_cnt = &phys_enc->pending_kickoff_cnt;
wait_info.timeout_ms = KICKOFF_TIMEOUT_MS;
@@ -671,9 +685,7 @@ static int _sde_encoder_phys_cmd_wait_for_idle(
ret = sde_encoder_helper_wait_for_irq(phys_enc, INTR_IDX_PINGPONG,
&wait_info);
if (ret == -ETIMEDOUT) {
pending_cnt = atomic_read(&phys_enc->pending_kickoff_cnt);
for (i = 0; i < pending_cnt; i++)
_sde_encoder_phys_cmd_handle_ppdone_timeout(phys_enc,
_sde_encoder_phys_cmd_handle_ppdone_timeout(phys_enc,
recovery_events);
} else if (!ret) {
if (cmd_enc->pp_timeout_report_cnt && recovery_events) {
@@ -1368,19 +1380,9 @@ static int _sde_encoder_phys_cmd_wait_for_wr_ptr(
phys_enc->parent_ops.handle_frame_done(
phys_enc->parent, phys_enc,
SDE_ENCODER_FRAME_EVENT_SIGNAL_RETIRE_FENCE);
} else if ((ret == 0) &&
(phys_enc->frame_trigger_mode == FRAME_DONE_WAIT_POSTED_START)
&& ctl->ops.get_scheduler_status
&& (ctl->ops.get_scheduler_status(ctl) & BIT(0))
&& atomic_add_unless(&phys_enc->pending_kickoff_cnt, -1, 0)
&& phys_enc->parent_ops.handle_frame_done) {
phys_enc->parent_ops.handle_frame_done(
phys_enc->parent, phys_enc,
SDE_ENCODER_FRAME_EVENT_DONE |
SDE_ENCODER_FRAME_EVENT_SIGNAL_RELEASE_FENCE);
}
cmd_enc->wr_ptr_wait_success = (ret == 0) ? true : false;
return ret;
}
@@ -1408,7 +1410,7 @@ static int sde_encoder_phys_cmd_wait_for_tx_complete(
static int sde_encoder_phys_cmd_wait_for_commit_done(
struct sde_encoder_phys *phys_enc)
{
int rc = 0;
int rc = 0, i, pending_cnt;
struct sde_encoder_phys_cmd *cmd_enc;
if (!phys_enc)
@@ -1421,11 +1423,11 @@ static int sde_encoder_phys_cmd_wait_for_commit_done(
rc = _sde_encoder_phys_cmd_wait_for_wr_ptr(phys_enc);
if (rc == -ETIMEDOUT)
goto wait_for_idle;
}
if (!rc && sde_encoder_phys_cmd_is_master(phys_enc) &&
cmd_enc->autorefresh.cfg.enable)
rc = _sde_encoder_phys_cmd_wait_for_autorefresh_done(phys_enc);
if (cmd_enc->autorefresh.cfg.enable)
rc = _sde_encoder_phys_cmd_wait_for_autorefresh_done(
phys_enc);
}
/* wait for posted start or serialize trigger */
if ((atomic_read(&phys_enc->pending_kickoff_cnt) > 1) ||
@@ -1435,14 +1437,16 @@ static int sde_encoder_phys_cmd_wait_for_commit_done(
return rc;
wait_for_idle:
rc = _sde_encoder_phys_cmd_wait_for_idle(phys_enc);
pending_cnt = atomic_read(&phys_enc->pending_kickoff_cnt);
for (i = 0; i < pending_cnt; i++)
rc |= sde_encoder_wait_for_event(phys_enc->parent,
MSM_ENC_TX_COMPLETE);
if (rc) {
SDE_EVT32(DRMID(phys_enc->parent),
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->frame_trigger_mode,
atomic_read(&phys_enc->pending_kickoff_cnt),
phys_enc->enable_state, rc);
atomic_set(&phys_enc->pending_kickoff_cnt, 0);
SDE_ERROR("pp:%d failed wait_for_idle: %d\n",
phys_enc->hw_pp->idx - PINGPONG_0, rc);
if (phys_enc->enable_state == SDE_ENC_ERR_NEEDS_HW_RESET)