From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 1174 ++++++++++++++++++----------------------------------------
1 files changed, 370 insertions(+), 804 deletions(-)
diff --git a/kernel/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/kernel/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
index 13c0a36..9483005 100644
--- a/kernel/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
+++ b/kernel/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
@@ -1,358 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
*/
#define pr_fmt(fmt) "[drm:%s] " fmt, __func__
#include "dpu_kms.h"
#include "dpu_hw_lm.h"
#include "dpu_hw_ctl.h"
-#include "dpu_hw_cdm.h"
#include "dpu_hw_pingpong.h"
#include "dpu_hw_intf.h"
+#include "dpu_hw_dspp.h"
#include "dpu_encoder.h"
#include "dpu_trace.h"
-#define RESERVED_BY_OTHER(h, r) \
- ((h)->rsvp && ((h)->rsvp->enc_id != (r)->enc_id))
-#define RM_RQ_LOCK(r) ((r)->top_ctrl & BIT(DPU_RM_TOPCTL_RESERVE_LOCK))
-#define RM_RQ_CLEAR(r) ((r)->top_ctrl & BIT(DPU_RM_TOPCTL_RESERVE_CLEAR))
-#define RM_RQ_DS(r) ((r)->top_ctrl & BIT(DPU_RM_TOPCTL_DS))
-#define RM_IS_TOPOLOGY_MATCH(t, r) ((t).num_lm == (r).num_lm && \
- (t).num_comp_enc == (r).num_enc && \
- (t).num_intf == (r).num_intf)
-
-struct dpu_rm_topology_def {
- enum dpu_rm_topology_name top_name;
- int num_lm;
- int num_comp_enc;
- int num_intf;
- int num_ctl;
- int needs_split_display;
-};
-
-static const struct dpu_rm_topology_def g_top_table[] = {
- { DPU_RM_TOPOLOGY_NONE, 0, 0, 0, 0, false },
- { DPU_RM_TOPOLOGY_SINGLEPIPE, 1, 0, 1, 1, false },
- { DPU_RM_TOPOLOGY_DUALPIPE, 2, 0, 2, 2, true },
- { DPU_RM_TOPOLOGY_DUALPIPE_3DMERGE, 2, 0, 1, 1, false },
-};
+static inline bool reserved_by_other(uint32_t *res_map, int idx,
+ uint32_t enc_id)
+{
+ return res_map[idx] && res_map[idx] != enc_id;
+}
/**
* struct dpu_rm_requirements - Reservation requirements parameter bundle
- * @top_ctrl: topology control preference from kernel client
- * @top: selected topology for the display
+ * @topology: selected topology for the display
* @hw_res: Hardware resources required as reported by the encoders
*/
struct dpu_rm_requirements {
- uint64_t top_ctrl;
- const struct dpu_rm_topology_def *topology;
+ struct msm_display_topology topology;
struct dpu_encoder_hw_resources hw_res;
};
-/**
- * struct dpu_rm_rsvp - Use Case Reservation tagging structure
- * Used to tag HW blocks as reserved by a CRTC->Encoder->Connector chain
- * By using as a tag, rather than lists of pointers to HW blocks used
- * we can avoid some list management since we don't know how many blocks
- * of each type a given use case may require.
- * @list: List head for list of all reservations
- * @seq: Global RSVP sequence number for debugging, especially for
- * differentiating differenct allocations for same encoder.
- * @enc_id: Reservations are tracked by Encoder DRM object ID.
- * CRTCs may be connected to multiple Encoders.
- * An encoder or connector id identifies the display path.
- * @topology DRM<->HW topology use case
- */
-struct dpu_rm_rsvp {
- struct list_head list;
- uint32_t seq;
- uint32_t enc_id;
- enum dpu_rm_topology_name topology;
-};
-
-/**
- * struct dpu_rm_hw_blk - hardware block tracking list member
- * @list: List head for list of all hardware blocks tracking items
- * @rsvp: Pointer to use case reservation if reserved by a client
- * @rsvp_nxt: Temporary pointer used during reservation to the incoming
- * request. Will be swapped into rsvp if proposal is accepted
- * @type: Type of hardware block this structure tracks
- * @id: Hardware ID number, within it's own space, ie. LM_X
- * @catalog: Pointer to the hardware catalog entry for this block
- * @hw: Pointer to the hardware register access object for this block
- */
-struct dpu_rm_hw_blk {
- struct list_head list;
- struct dpu_rm_rsvp *rsvp;
- struct dpu_rm_rsvp *rsvp_nxt;
- enum dpu_hw_blk_type type;
- uint32_t id;
- struct dpu_hw_blk *hw;
-};
-
-/**
- * dpu_rm_dbg_rsvp_stage - enum of steps in making reservation for event logging
- */
-enum dpu_rm_dbg_rsvp_stage {
- DPU_RM_STAGE_BEGIN,
- DPU_RM_STAGE_AFTER_CLEAR,
- DPU_RM_STAGE_AFTER_RSVPNEXT,
- DPU_RM_STAGE_FINAL
-};
-
-static void _dpu_rm_print_rsvps(
- struct dpu_rm *rm,
- enum dpu_rm_dbg_rsvp_stage stage)
-{
- struct dpu_rm_rsvp *rsvp;
- struct dpu_rm_hw_blk *blk;
- enum dpu_hw_blk_type type;
-
- DPU_DEBUG("%d\n", stage);
-
- list_for_each_entry(rsvp, &rm->rsvps, list) {
- DRM_DEBUG_KMS("%d rsvp[s%ue%u] topology %d\n", stage, rsvp->seq,
- rsvp->enc_id, rsvp->topology);
- }
-
- for (type = 0; type < DPU_HW_BLK_MAX; type++) {
- list_for_each_entry(blk, &rm->hw_blks[type], list) {
- if (!blk->rsvp && !blk->rsvp_nxt)
- continue;
-
- DRM_DEBUG_KMS("%d rsvp[s%ue%u->s%ue%u] %d %d\n", stage,
- (blk->rsvp) ? blk->rsvp->seq : 0,
- (blk->rsvp) ? blk->rsvp->enc_id : 0,
- (blk->rsvp_nxt) ? blk->rsvp_nxt->seq : 0,
- (blk->rsvp_nxt) ? blk->rsvp_nxt->enc_id : 0,
- blk->type, blk->id);
- }
- }
-}
-
-struct dpu_hw_mdp *dpu_rm_get_mdp(struct dpu_rm *rm)
-{
- return rm->hw_mdp;
-}
-
-enum dpu_rm_topology_name
-dpu_rm_get_topology_name(struct msm_display_topology topology)
+int dpu_rm_destroy(struct dpu_rm *rm)
{
int i;
- for (i = 0; i < DPU_RM_TOPOLOGY_MAX; i++)
- if (RM_IS_TOPOLOGY_MATCH(g_top_table[i], topology))
- return g_top_table[i].top_name;
+ for (i = 0; i < ARRAY_SIZE(rm->dspp_blks); i++) {
+ struct dpu_hw_dspp *hw;
- return DPU_RM_TOPOLOGY_NONE;
-}
-
-void dpu_rm_init_hw_iter(
- struct dpu_rm_hw_iter *iter,
- uint32_t enc_id,
- enum dpu_hw_blk_type type)
-{
- memset(iter, 0, sizeof(*iter));
- iter->enc_id = enc_id;
- iter->type = type;
-}
-
-static bool _dpu_rm_get_hw_locked(struct dpu_rm *rm, struct dpu_rm_hw_iter *i)
-{
- struct list_head *blk_list;
-
- if (!rm || !i || i->type >= DPU_HW_BLK_MAX) {
- DPU_ERROR("invalid rm\n");
- return false;
- }
-
- i->hw = NULL;
- blk_list = &rm->hw_blks[i->type];
-
- if (i->blk && (&i->blk->list == blk_list)) {
- DPU_DEBUG("attempt resume iteration past last\n");
- return false;
- }
-
- i->blk = list_prepare_entry(i->blk, blk_list, list);
-
- list_for_each_entry_continue(i->blk, blk_list, list) {
- struct dpu_rm_rsvp *rsvp = i->blk->rsvp;
-
- if (i->blk->type != i->type) {
- DPU_ERROR("found incorrect block type %d on %d list\n",
- i->blk->type, i->type);
- return false;
- }
-
- if ((i->enc_id == 0) || (rsvp && rsvp->enc_id == i->enc_id)) {
- i->hw = i->blk->hw;
- DPU_DEBUG("found type %d id %d for enc %d\n",
- i->type, i->blk->id, i->enc_id);
- return true;
+ if (rm->dspp_blks[i]) {
+ hw = to_dpu_hw_dspp(rm->dspp_blks[i]);
+ dpu_hw_dspp_destroy(hw);
}
}
+ for (i = 0; i < ARRAY_SIZE(rm->pingpong_blks); i++) {
+ struct dpu_hw_pingpong *hw;
- DPU_DEBUG("no match, type %d for enc %d\n", i->type, i->enc_id);
-
- return false;
-}
-
-bool dpu_rm_get_hw(struct dpu_rm *rm, struct dpu_rm_hw_iter *i)
-{
- bool ret;
-
- mutex_lock(&rm->rm_lock);
- ret = _dpu_rm_get_hw_locked(rm, i);
- mutex_unlock(&rm->rm_lock);
-
- return ret;
-}
-
-static void _dpu_rm_hw_destroy(enum dpu_hw_blk_type type, void *hw)
-{
- switch (type) {
- case DPU_HW_BLK_LM:
- dpu_hw_lm_destroy(hw);
- break;
- case DPU_HW_BLK_CTL:
- dpu_hw_ctl_destroy(hw);
- break;
- case DPU_HW_BLK_CDM:
- dpu_hw_cdm_destroy(hw);
- break;
- case DPU_HW_BLK_PINGPONG:
- dpu_hw_pingpong_destroy(hw);
- break;
- case DPU_HW_BLK_INTF:
- dpu_hw_intf_destroy(hw);
- break;
- case DPU_HW_BLK_SSPP:
- /* SSPPs are not managed by the resource manager */
- case DPU_HW_BLK_TOP:
- /* Top is a singleton, not managed in hw_blks list */
- case DPU_HW_BLK_MAX:
- default:
- DPU_ERROR("unsupported block type %d\n", type);
- break;
- }
-}
-
-int dpu_rm_destroy(struct dpu_rm *rm)
-{
-
- struct dpu_rm_rsvp *rsvp_cur, *rsvp_nxt;
- struct dpu_rm_hw_blk *hw_cur, *hw_nxt;
- enum dpu_hw_blk_type type;
-
- if (!rm) {
- DPU_ERROR("invalid rm\n");
- return -EINVAL;
- }
-
- list_for_each_entry_safe(rsvp_cur, rsvp_nxt, &rm->rsvps, list) {
- list_del(&rsvp_cur->list);
- kfree(rsvp_cur);
- }
-
-
- for (type = 0; type < DPU_HW_BLK_MAX; type++) {
- list_for_each_entry_safe(hw_cur, hw_nxt, &rm->hw_blks[type],
- list) {
- list_del(&hw_cur->list);
- _dpu_rm_hw_destroy(hw_cur->type, hw_cur->hw);
- kfree(hw_cur);
+ if (rm->pingpong_blks[i]) {
+ hw = to_dpu_hw_pingpong(rm->pingpong_blks[i]);
+ dpu_hw_pingpong_destroy(hw);
}
}
+ for (i = 0; i < ARRAY_SIZE(rm->mixer_blks); i++) {
+ struct dpu_hw_mixer *hw;
- dpu_hw_mdp_destroy(rm->hw_mdp);
- rm->hw_mdp = NULL;
-
- mutex_destroy(&rm->rm_lock);
-
- return 0;
-}
-
-static int _dpu_rm_hw_blk_create(
- struct dpu_rm *rm,
- struct dpu_mdss_cfg *cat,
- void __iomem *mmio,
- enum dpu_hw_blk_type type,
- uint32_t id,
- void *hw_catalog_info)
-{
- struct dpu_rm_hw_blk *blk;
- struct dpu_hw_mdp *hw_mdp;
- void *hw;
-
- hw_mdp = rm->hw_mdp;
-
- switch (type) {
- case DPU_HW_BLK_LM:
- hw = dpu_hw_lm_init(id, mmio, cat);
- break;
- case DPU_HW_BLK_CTL:
- hw = dpu_hw_ctl_init(id, mmio, cat);
- break;
- case DPU_HW_BLK_CDM:
- hw = dpu_hw_cdm_init(id, mmio, cat, hw_mdp);
- break;
- case DPU_HW_BLK_PINGPONG:
- hw = dpu_hw_pingpong_init(id, mmio, cat);
- break;
- case DPU_HW_BLK_INTF:
- hw = dpu_hw_intf_init(id, mmio, cat);
- break;
- case DPU_HW_BLK_SSPP:
- /* SSPPs are not managed by the resource manager */
- case DPU_HW_BLK_TOP:
- /* Top is a singleton, not managed in hw_blks list */
- case DPU_HW_BLK_MAX:
- default:
- DPU_ERROR("unsupported block type %d\n", type);
- return -EINVAL;
+ if (rm->mixer_blks[i]) {
+ hw = to_dpu_hw_mixer(rm->mixer_blks[i]);
+ dpu_hw_lm_destroy(hw);
+ }
}
+ for (i = 0; i < ARRAY_SIZE(rm->ctl_blks); i++) {
+ struct dpu_hw_ctl *hw;
- if (IS_ERR_OR_NULL(hw)) {
- DPU_ERROR("failed hw object creation: type %d, err %ld\n",
- type, PTR_ERR(hw));
- return -EFAULT;
+ if (rm->ctl_blks[i]) {
+ hw = to_dpu_hw_ctl(rm->ctl_blks[i]);
+ dpu_hw_ctl_destroy(hw);
+ }
}
+ for (i = 0; i < ARRAY_SIZE(rm->intf_blks); i++) {
+ struct dpu_hw_intf *hw;
- blk = kzalloc(sizeof(*blk), GFP_KERNEL);
- if (!blk) {
- _dpu_rm_hw_destroy(type, hw);
- return -ENOMEM;
+ if (rm->intf_blks[i]) {
+ hw = to_dpu_hw_intf(rm->intf_blks[i]);
+ dpu_hw_intf_destroy(hw);
+ }
}
-
- blk->type = type;
- blk->id = id;
- blk->hw = hw;
- list_add_tail(&blk->list, &rm->hw_blks[type]);
return 0;
}
int dpu_rm_init(struct dpu_rm *rm,
struct dpu_mdss_cfg *cat,
- void __iomem *mmio,
- struct drm_device *dev)
+ void __iomem *mmio)
{
int rc, i;
- enum dpu_hw_blk_type type;
- if (!rm || !cat || !mmio || !dev) {
+ if (!rm || !cat || !mmio) {
DPU_ERROR("invalid kms\n");
return -EINVAL;
}
@@ -360,38 +92,27 @@
/* Clear, setup lists */
memset(rm, 0, sizeof(*rm));
- mutex_init(&rm->rm_lock);
-
- INIT_LIST_HEAD(&rm->rsvps);
- for (type = 0; type < DPU_HW_BLK_MAX; type++)
- INIT_LIST_HEAD(&rm->hw_blks[type]);
-
- rm->dev = dev;
-
- /* Some of the sub-blocks require an mdptop to be created */
- rm->hw_mdp = dpu_hw_mdptop_init(MDP_TOP, mmio, cat);
- if (IS_ERR_OR_NULL(rm->hw_mdp)) {
- rc = PTR_ERR(rm->hw_mdp);
- rm->hw_mdp = NULL;
- DPU_ERROR("failed: mdp hw not available\n");
- goto fail;
- }
-
/* Interrogate HW catalog and create tracking items for hw blocks */
for (i = 0; i < cat->mixer_count; i++) {
- struct dpu_lm_cfg *lm = &cat->mixer[i];
+ struct dpu_hw_mixer *hw;
+ const struct dpu_lm_cfg *lm = &cat->mixer[i];
if (lm->pingpong == PINGPONG_MAX) {
DPU_DEBUG("skip mixer %d without pingpong\n", lm->id);
continue;
}
- rc = _dpu_rm_hw_blk_create(rm, cat, mmio, DPU_HW_BLK_LM,
- cat->mixer[i].id, &cat->mixer[i]);
- if (rc) {
- DPU_ERROR("failed: lm hw not available\n");
+ if (lm->id < LM_0 || lm->id >= LM_MAX) {
+ DPU_ERROR("skip mixer %d with invalid id\n", lm->id);
+ continue;
+ }
+ hw = dpu_hw_lm_init(lm->id, mmio, cat);
+ if (IS_ERR_OR_NULL(hw)) {
+ rc = PTR_ERR(hw);
+ DPU_ERROR("failed lm object creation: err %d\n", rc);
goto fail;
}
+ rm->mixer_blks[lm->id - LM_0] = &hw->base;
if (!rm->lm_max_width) {
rm->lm_max_width = lm->sblk->maxwidth;
@@ -407,44 +128,76 @@
}
for (i = 0; i < cat->pingpong_count; i++) {
- rc = _dpu_rm_hw_blk_create(rm, cat, mmio, DPU_HW_BLK_PINGPONG,
- cat->pingpong[i].id, &cat->pingpong[i]);
- if (rc) {
- DPU_ERROR("failed: pp hw not available\n");
+ struct dpu_hw_pingpong *hw;
+ const struct dpu_pingpong_cfg *pp = &cat->pingpong[i];
+
+ if (pp->id < PINGPONG_0 || pp->id >= PINGPONG_MAX) {
+ DPU_ERROR("skip pingpong %d with invalid id\n", pp->id);
+ continue;
+ }
+ hw = dpu_hw_pingpong_init(pp->id, mmio, cat);
+ if (IS_ERR_OR_NULL(hw)) {
+ rc = PTR_ERR(hw);
+ DPU_ERROR("failed pingpong object creation: err %d\n",
+ rc);
goto fail;
}
+ rm->pingpong_blks[pp->id - PINGPONG_0] = &hw->base;
}
for (i = 0; i < cat->intf_count; i++) {
- if (cat->intf[i].type == INTF_NONE) {
+ struct dpu_hw_intf *hw;
+ const struct dpu_intf_cfg *intf = &cat->intf[i];
+
+ if (intf->type == INTF_NONE) {
DPU_DEBUG("skip intf %d with type none\n", i);
continue;
}
-
- rc = _dpu_rm_hw_blk_create(rm, cat, mmio, DPU_HW_BLK_INTF,
- cat->intf[i].id, &cat->intf[i]);
- if (rc) {
- DPU_ERROR("failed: intf hw not available\n");
+ if (intf->id < INTF_0 || intf->id >= INTF_MAX) {
+ DPU_ERROR("skip intf %d with invalid id\n", intf->id);
+ continue;
+ }
+ hw = dpu_hw_intf_init(intf->id, mmio, cat);
+ if (IS_ERR_OR_NULL(hw)) {
+ rc = PTR_ERR(hw);
+ DPU_ERROR("failed intf object creation: err %d\n", rc);
goto fail;
}
+ rm->intf_blks[intf->id - INTF_0] = &hw->base;
}
for (i = 0; i < cat->ctl_count; i++) {
- rc = _dpu_rm_hw_blk_create(rm, cat, mmio, DPU_HW_BLK_CTL,
- cat->ctl[i].id, &cat->ctl[i]);
- if (rc) {
- DPU_ERROR("failed: ctl hw not available\n");
+ struct dpu_hw_ctl *hw;
+ const struct dpu_ctl_cfg *ctl = &cat->ctl[i];
+
+ if (ctl->id < CTL_0 || ctl->id >= CTL_MAX) {
+ DPU_ERROR("skip ctl %d with invalid id\n", ctl->id);
+ continue;
+ }
+ hw = dpu_hw_ctl_init(ctl->id, mmio, cat);
+ if (IS_ERR_OR_NULL(hw)) {
+ rc = PTR_ERR(hw);
+ DPU_ERROR("failed ctl object creation: err %d\n", rc);
goto fail;
}
+ rm->ctl_blks[ctl->id - CTL_0] = &hw->base;
}
- for (i = 0; i < cat->cdm_count; i++) {
- rc = _dpu_rm_hw_blk_create(rm, cat, mmio, DPU_HW_BLK_CDM,
- cat->cdm[i].id, &cat->cdm[i]);
- if (rc) {
- DPU_ERROR("failed: cdm hw not available\n");
+ for (i = 0; i < cat->dspp_count; i++) {
+ struct dpu_hw_dspp *hw;
+ const struct dpu_dspp_cfg *dspp = &cat->dspp[i];
+
+ if (dspp->id < DSPP_0 || dspp->id >= DSPP_MAX) {
+ DPU_ERROR("skip dspp %d with invalid id\n", dspp->id);
+ continue;
+ }
+ hw = dpu_hw_dspp_init(dspp->id, mmio, cat);
+ if (IS_ERR_OR_NULL(hw)) {
+ rc = PTR_ERR(hw);
+ DPU_ERROR("failed dspp object creation: err %d\n", rc);
goto fail;
}
+ rm->dspp_blks[dspp->id - DSPP_0] = &hw->base;
}
return 0;
@@ -452,7 +205,37 @@
fail:
dpu_rm_destroy(rm);
- return rc;
+ return rc ? rc : -EFAULT;
+}
+
+static bool _dpu_rm_needs_split_display(const struct msm_display_topology *top)
+{
+ return top->num_intf > 1;
+}
+
+/**
+ * _dpu_rm_check_lm_peer - check if a mixer is a peer of the primary
+ * @rm: dpu resource manager handle
+ * @primary_idx: index of primary mixer in rm->mixer_blks[]
+ * @peer_idx: index of other mixer in rm->mixer_blks[]
+ * @Return: true if rm->mixer_blks[peer_idx] is a peer of
+ * rm->mixer_blks[primary_idx]
+ */
+static bool _dpu_rm_check_lm_peer(struct dpu_rm *rm, int primary_idx,
+ int peer_idx)
+{
+ const struct dpu_lm_cfg *prim_lm_cfg;
+ const struct dpu_lm_cfg *peer_cfg;
+
+ prim_lm_cfg = to_dpu_hw_mixer(rm->mixer_blks[primary_idx])->cap;
+ peer_cfg = to_dpu_hw_mixer(rm->mixer_blks[peer_idx])->cap;
+
+ if (!test_bit(peer_cfg->id, &prim_lm_cfg->lm_pair_mask)) {
+ DPU_DEBUG("lm %d not peer of lm %d\n", peer_cfg->id,
+ peer_cfg->id);
+ return false;
+ }
+ return true;
}
/**
@@ -460,227 +243,188 @@
* proposed use case requirements, incl. hardwired dependent blocks like
* pingpong
* @rm: dpu resource manager handle
- * @rsvp: reservation currently being created
- * @reqs: proposed use case requirements
- * @lm: proposed layer mixer, function checks if lm, and all other hardwired
- * blocks connected to the lm (pp) is available and appropriate
- * @pp: output parameter, pingpong block attached to the layer mixer.
- * NULL if pp was not available, or not matching requirements.
- * @primary_lm: if non-null, this function check if lm is compatible primary_lm
- * as well as satisfying all other requirements
+ * @enc_id: encoder id requesting for allocation
+ * @lm_idx: index of proposed layer mixer in rm->mixer_blks[], function checks
+ * if lm, and all other hardwired blocks connected to the lm (pp) is
+ * available and appropriate
+ * @pp_idx: output parameter, index of pingpong block attached to the layer
+ * mixer in rm->pingpong_blks[].
+ * @dspp_idx: output parameter, index of dspp block attached to the layer
+ * mixer in rm->dspp_blks[].
+ * @reqs: input parameter, rm requirements for HW blocks needed in the
+ * datapath.
* @Return: true if lm matches all requirements, false otherwise
*/
-static bool _dpu_rm_check_lm_and_get_connected_blks(
- struct dpu_rm *rm,
- struct dpu_rm_rsvp *rsvp,
- struct dpu_rm_requirements *reqs,
- struct dpu_rm_hw_blk *lm,
- struct dpu_rm_hw_blk **pp,
- struct dpu_rm_hw_blk *primary_lm)
+static bool _dpu_rm_check_lm_and_get_connected_blks(struct dpu_rm *rm,
+ struct dpu_global_state *global_state,
+ uint32_t enc_id, int lm_idx, int *pp_idx, int *dspp_idx,
+ struct dpu_rm_requirements *reqs)
{
- const struct dpu_lm_cfg *lm_cfg = to_dpu_hw_mixer(lm->hw)->cap;
- struct dpu_rm_hw_iter iter;
-
- *pp = NULL;
-
- DPU_DEBUG("check lm %d pp %d\n",
- lm_cfg->id, lm_cfg->pingpong);
-
- /* Check if this layer mixer is a peer of the proposed primary LM */
- if (primary_lm) {
- const struct dpu_lm_cfg *prim_lm_cfg =
- to_dpu_hw_mixer(primary_lm->hw)->cap;
-
- if (!test_bit(lm_cfg->id, &prim_lm_cfg->lm_pair_mask)) {
- DPU_DEBUG("lm %d not peer of lm %d\n", lm_cfg->id,
- prim_lm_cfg->id);
- return false;
- }
- }
+ const struct dpu_lm_cfg *lm_cfg;
+ int idx;
/* Already reserved? */
- if (RESERVED_BY_OTHER(lm, rsvp)) {
- DPU_DEBUG("lm %d already reserved\n", lm_cfg->id);
+ if (reserved_by_other(global_state->mixer_to_enc_id, lm_idx, enc_id)) {
+ DPU_DEBUG("lm %d already reserved\n", lm_idx + LM_0);
return false;
}
- dpu_rm_init_hw_iter(&iter, 0, DPU_HW_BLK_PINGPONG);
- while (_dpu_rm_get_hw_locked(rm, &iter)) {
- if (iter.blk->id == lm_cfg->pingpong) {
- *pp = iter.blk;
- break;
- }
- }
-
- if (!*pp) {
+ lm_cfg = to_dpu_hw_mixer(rm->mixer_blks[lm_idx])->cap;
+ idx = lm_cfg->pingpong - PINGPONG_0;
+ if (idx < 0 || idx >= ARRAY_SIZE(rm->pingpong_blks)) {
DPU_ERROR("failed to get pp on lm %d\n", lm_cfg->pingpong);
return false;
}
- if (RESERVED_BY_OTHER(*pp, rsvp)) {
- DPU_DEBUG("lm %d pp %d already reserved\n", lm->id,
- (*pp)->id);
+ if (reserved_by_other(global_state->pingpong_to_enc_id, idx, enc_id)) {
+ DPU_DEBUG("lm %d pp %d already reserved\n", lm_cfg->id,
+ lm_cfg->pingpong);
return false;
}
+ *pp_idx = idx;
+
+ if (!reqs->topology.num_dspp)
+ return true;
+
+ idx = lm_cfg->dspp - DSPP_0;
+ if (idx < 0 || idx >= ARRAY_SIZE(rm->dspp_blks)) {
+ DPU_ERROR("failed to get dspp on lm %d\n", lm_cfg->dspp);
+ return false;
+ }
+
+ if (reserved_by_other(global_state->dspp_to_enc_id, idx, enc_id)) {
+ DPU_DEBUG("lm %d dspp %d already reserved\n", lm_cfg->id,
+ lm_cfg->dspp);
+ return false;
+ }
+ *dspp_idx = idx;
return true;
}
-static int _dpu_rm_reserve_lms(
- struct dpu_rm *rm,
- struct dpu_rm_rsvp *rsvp,
- struct dpu_rm_requirements *reqs)
+static int _dpu_rm_reserve_lms(struct dpu_rm *rm,
+ struct dpu_global_state *global_state,
+ uint32_t enc_id,
+ struct dpu_rm_requirements *reqs)
{
- struct dpu_rm_hw_blk *lm[MAX_BLOCKS];
- struct dpu_rm_hw_blk *pp[MAX_BLOCKS];
- struct dpu_rm_hw_iter iter_i, iter_j;
- int lm_count = 0;
- int i, rc = 0;
+ int lm_idx[MAX_BLOCKS];
+ int pp_idx[MAX_BLOCKS];
+ int dspp_idx[MAX_BLOCKS] = {0};
+ int i, j, lm_count = 0;
- if (!reqs->topology->num_lm) {
- DPU_ERROR("invalid number of lm: %d\n", reqs->topology->num_lm);
+ if (!reqs->topology.num_lm) {
+ DPU_ERROR("invalid number of lm: %d\n", reqs->topology.num_lm);
return -EINVAL;
}
/* Find a primary mixer */
- dpu_rm_init_hw_iter(&iter_i, 0, DPU_HW_BLK_LM);
- while (lm_count != reqs->topology->num_lm &&
- _dpu_rm_get_hw_locked(rm, &iter_i)) {
- memset(&lm, 0, sizeof(lm));
- memset(&pp, 0, sizeof(pp));
+ for (i = 0; i < ARRAY_SIZE(rm->mixer_blks) &&
+ lm_count < reqs->topology.num_lm; i++) {
+ if (!rm->mixer_blks[i])
+ continue;
lm_count = 0;
- lm[lm_count] = iter_i.blk;
+ lm_idx[lm_count] = i;
- if (!_dpu_rm_check_lm_and_get_connected_blks(
- rm, rsvp, reqs, lm[lm_count],
- &pp[lm_count], NULL))
+ if (!_dpu_rm_check_lm_and_get_connected_blks(rm, global_state,
+ enc_id, i, &pp_idx[lm_count],
+ &dspp_idx[lm_count], reqs)) {
continue;
+ }
++lm_count;
/* Valid primary mixer found, find matching peers */
- dpu_rm_init_hw_iter(&iter_j, 0, DPU_HW_BLK_LM);
-
- while (lm_count != reqs->topology->num_lm &&
- _dpu_rm_get_hw_locked(rm, &iter_j)) {
- if (iter_i.blk == iter_j.blk)
+ for (j = i + 1; j < ARRAY_SIZE(rm->mixer_blks) &&
+ lm_count < reqs->topology.num_lm; j++) {
+ if (!rm->mixer_blks[j])
continue;
- if (!_dpu_rm_check_lm_and_get_connected_blks(
- rm, rsvp, reqs, iter_j.blk,
- &pp[lm_count], iter_i.blk))
+ if (!_dpu_rm_check_lm_peer(rm, i, j)) {
+ DPU_DEBUG("lm %d not peer of lm %d\n", LM_0 + j,
+ LM_0 + i);
continue;
+ }
- lm[lm_count] = iter_j.blk;
+ if (!_dpu_rm_check_lm_and_get_connected_blks(rm,
+ global_state, enc_id, j,
+ &pp_idx[lm_count], &dspp_idx[lm_count],
+ reqs)) {
+ continue;
+ }
+
+ lm_idx[lm_count] = j;
++lm_count;
}
}
- if (lm_count != reqs->topology->num_lm) {
+ if (lm_count != reqs->topology.num_lm) {
DPU_DEBUG("unable to find appropriate mixers\n");
return -ENAVAIL;
}
- for (i = 0; i < ARRAY_SIZE(lm); i++) {
- if (!lm[i])
- break;
+ for (i = 0; i < lm_count; i++) {
+ global_state->mixer_to_enc_id[lm_idx[i]] = enc_id;
+ global_state->pingpong_to_enc_id[pp_idx[i]] = enc_id;
+ global_state->dspp_to_enc_id[dspp_idx[i]] =
+ reqs->topology.num_dspp ? enc_id : 0;
- lm[i]->rsvp_nxt = rsvp;
- pp[i]->rsvp_nxt = rsvp;
-
- trace_dpu_rm_reserve_lms(lm[i]->id, lm[i]->type, rsvp->enc_id,
- pp[i]->id);
- }
-
- return rc;
-}
-
-static int _dpu_rm_reserve_ctls(
- struct dpu_rm *rm,
- struct dpu_rm_rsvp *rsvp,
- const struct dpu_rm_topology_def *top)
-{
- struct dpu_rm_hw_blk *ctls[MAX_BLOCKS];
- struct dpu_rm_hw_iter iter;
- int i = 0;
-
- memset(&ctls, 0, sizeof(ctls));
-
- dpu_rm_init_hw_iter(&iter, 0, DPU_HW_BLK_CTL);
- while (_dpu_rm_get_hw_locked(rm, &iter)) {
- const struct dpu_hw_ctl *ctl = to_dpu_hw_ctl(iter.blk->hw);
- unsigned long features = ctl->caps->features;
- bool has_split_display;
-
- if (RESERVED_BY_OTHER(iter.blk, rsvp))
- continue;
-
- has_split_display = BIT(DPU_CTL_SPLIT_DISPLAY) & features;
-
- DPU_DEBUG("ctl %d caps 0x%lX\n", iter.blk->id, features);
-
- if (top->needs_split_display != has_split_display)
- continue;
-
- ctls[i] = iter.blk;
- DPU_DEBUG("ctl %d match\n", iter.blk->id);
-
- if (++i == top->num_ctl)
- break;
- }
-
- if (i != top->num_ctl)
- return -ENAVAIL;
-
- for (i = 0; i < ARRAY_SIZE(ctls) && i < top->num_ctl; i++) {
- ctls[i]->rsvp_nxt = rsvp;
- trace_dpu_rm_reserve_ctls(ctls[i]->id, ctls[i]->type,
- rsvp->enc_id);
+ trace_dpu_rm_reserve_lms(lm_idx[i] + LM_0, enc_id,
+ pp_idx[i] + PINGPONG_0);
}
return 0;
}
-static int _dpu_rm_reserve_cdm(
+static int _dpu_rm_reserve_ctls(
struct dpu_rm *rm,
- struct dpu_rm_rsvp *rsvp,
- uint32_t id,
- enum dpu_hw_blk_type type)
+ struct dpu_global_state *global_state,
+ uint32_t enc_id,
+ const struct msm_display_topology *top)
{
- struct dpu_rm_hw_iter iter;
+ int ctl_idx[MAX_BLOCKS];
+ int i = 0, j, num_ctls;
+ bool needs_split_display;
- DRM_DEBUG_KMS("type %d id %d\n", type, id);
+ /* each hw_intf needs its own hw_ctrl to program its control path */
+ num_ctls = top->num_intf;
- dpu_rm_init_hw_iter(&iter, 0, DPU_HW_BLK_CDM);
- while (_dpu_rm_get_hw_locked(rm, &iter)) {
- const struct dpu_hw_cdm *cdm = to_dpu_hw_cdm(iter.blk->hw);
- const struct dpu_cdm_cfg *caps = cdm->caps;
- bool match = false;
+ needs_split_display = _dpu_rm_needs_split_display(top);
- if (RESERVED_BY_OTHER(iter.blk, rsvp))
+ for (j = 0; j < ARRAY_SIZE(rm->ctl_blks); j++) {
+ const struct dpu_hw_ctl *ctl;
+ unsigned long features;
+ bool has_split_display;
+
+ if (!rm->ctl_blks[j])
+ continue;
+ if (reserved_by_other(global_state->ctl_to_enc_id, j, enc_id))
continue;
- if (type == DPU_HW_BLK_INTF && id != INTF_MAX)
- match = test_bit(id, &caps->intf_connect);
+ ctl = to_dpu_hw_ctl(rm->ctl_blks[j]);
+ features = ctl->caps->features;
+ has_split_display = BIT(DPU_CTL_SPLIT_DISPLAY) & features;
- DRM_DEBUG_KMS("iter: type:%d id:%d enc:%d cdm:%lu match:%d\n",
- iter.blk->type, iter.blk->id, rsvp->enc_id,
- caps->intf_connect, match);
+ DPU_DEBUG("ctl %d caps 0x%lX\n", rm->ctl_blks[j]->id, features);
- if (!match)
+ if (needs_split_display != has_split_display)
continue;
- trace_dpu_rm_reserve_cdm(iter.blk->id, iter.blk->type,
- rsvp->enc_id);
- iter.blk->rsvp_nxt = rsvp;
- break;
+ ctl_idx[i] = j;
+ DPU_DEBUG("ctl %d match\n", j + CTL_0);
+
+ if (++i == num_ctls)
+ break;
+
}
- if (!iter.hw) {
- DPU_ERROR("couldn't reserve cdm for type %d id %d\n", type, id);
+ if (i != num_ctls)
return -ENAVAIL;
+
+ for (i = 0; i < ARRAY_SIZE(ctl_idx) && i < num_ctls; i++) {
+ global_state->ctl_to_enc_id[ctl_idx[i]] = enc_id;
+ trace_dpu_rm_reserve_ctls(i + CTL_0, enc_id);
}
return 0;
@@ -688,46 +432,35 @@
static int _dpu_rm_reserve_intf(
struct dpu_rm *rm,
- struct dpu_rm_rsvp *rsvp,
- uint32_t id,
- enum dpu_hw_blk_type type,
- bool needs_cdm)
+ struct dpu_global_state *global_state,
+ uint32_t enc_id,
+ uint32_t id)
{
- struct dpu_rm_hw_iter iter;
- int ret = 0;
+ int idx = id - INTF_0;
- /* Find the block entry in the rm, and note the reservation */
- dpu_rm_init_hw_iter(&iter, 0, type);
- while (_dpu_rm_get_hw_locked(rm, &iter)) {
- if (iter.blk->id != id)
- continue;
-
- if (RESERVED_BY_OTHER(iter.blk, rsvp)) {
- DPU_ERROR("type %d id %d already reserved\n", type, id);
- return -ENAVAIL;
- }
-
- iter.blk->rsvp_nxt = rsvp;
- trace_dpu_rm_reserve_intf(iter.blk->id, iter.blk->type,
- rsvp->enc_id);
- break;
- }
-
- /* Shouldn't happen since intfs are fixed at probe */
- if (!iter.hw) {
- DPU_ERROR("couldn't find type %d id %d\n", type, id);
+ if (idx < 0 || idx >= ARRAY_SIZE(rm->intf_blks)) {
+ DPU_ERROR("invalid intf id: %d", id);
return -EINVAL;
}
- if (needs_cdm)
- ret = _dpu_rm_reserve_cdm(rm, rsvp, id, type);
+ if (!rm->intf_blks[idx]) {
+ DPU_ERROR("couldn't find intf id %d\n", id);
+ return -EINVAL;
+ }
- return ret;
+ if (reserved_by_other(global_state->intf_to_enc_id, idx, enc_id)) {
+ DPU_ERROR("intf id %d already reserved\n", id);
+ return -ENAVAIL;
+ }
+
+ global_state->intf_to_enc_id[idx] = enc_id;
+ return 0;
}
static int _dpu_rm_reserve_intf_related_hw(
struct dpu_rm *rm,
- struct dpu_rm_rsvp *rsvp,
+ struct dpu_global_state *global_state,
+ uint32_t enc_id,
struct dpu_encoder_hw_resources *hw_res)
{
int i, ret = 0;
@@ -737,8 +470,7 @@
if (hw_res->intfs[i] == INTF_MODE_NONE)
continue;
id = i + INTF_0;
- ret = _dpu_rm_reserve_intf(rm, rsvp, id,
- DPU_HW_BLK_INTF, hw_res->needs_cdm);
+ ret = _dpu_rm_reserve_intf(rm, global_state, enc_id, id);
if (ret)
return ret;
}
@@ -746,47 +478,29 @@
return ret;
}
-static int _dpu_rm_make_next_rsvp(
+static int _dpu_rm_make_reservation(
struct dpu_rm *rm,
+ struct dpu_global_state *global_state,
struct drm_encoder *enc,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state,
- struct dpu_rm_rsvp *rsvp,
struct dpu_rm_requirements *reqs)
{
int ret;
- struct dpu_rm_topology_def topology;
- /* Create reservation info, tag reserved blocks with it as we go */
- rsvp->seq = ++rm->rsvp_next_seq;
- rsvp->enc_id = enc->base.id;
- rsvp->topology = reqs->topology->top_name;
- list_add_tail(&rsvp->list, &rm->rsvps);
-
- ret = _dpu_rm_reserve_lms(rm, rsvp, reqs);
+ ret = _dpu_rm_reserve_lms(rm, global_state, enc->base.id, reqs);
if (ret) {
DPU_ERROR("unable to find appropriate mixers\n");
return ret;
}
- /*
- * Do assignment preferring to give away low-resource CTLs first:
- * - Check mixers without Split Display
- * - Only then allow to grab from CTLs with split display capability
- */
- _dpu_rm_reserve_ctls(rm, rsvp, reqs->topology);
- if (ret && !reqs->topology->needs_split_display) {
- memcpy(&topology, reqs->topology, sizeof(topology));
- topology.needs_split_display = true;
- _dpu_rm_reserve_ctls(rm, rsvp, &topology);
- }
+ ret = _dpu_rm_reserve_ctls(rm, global_state, enc->base.id,
+ &reqs->topology);
if (ret) {
DPU_ERROR("unable to find appropriate CTL\n");
return ret;
}
- /* Assign INTFs and blks whose usage is tied to them: CTL & CDM */
- ret = _dpu_rm_reserve_intf_related_hw(rm, rsvp, &reqs->hw_res);
+ ret = _dpu_rm_reserve_intf_related_hw(rm, global_state, enc->base.id,
+ &reqs->hw_res);
if (ret)
return ret;
@@ -794,286 +508,138 @@
}
static int _dpu_rm_populate_requirements(
- struct dpu_rm *rm,
struct drm_encoder *enc,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state,
struct dpu_rm_requirements *reqs,
struct msm_display_topology req_topology)
{
- int i;
+ dpu_encoder_get_hw_resources(enc, &reqs->hw_res);
- memset(reqs, 0, sizeof(*reqs));
+ reqs->topology = req_topology;
- dpu_encoder_get_hw_resources(enc, &reqs->hw_res, conn_state);
-
- for (i = 0; i < DPU_RM_TOPOLOGY_MAX; i++) {
- if (RM_IS_TOPOLOGY_MATCH(g_top_table[i],
- req_topology)) {
- reqs->topology = &g_top_table[i];
- break;
- }
- }
-
- if (!reqs->topology) {
- DPU_ERROR("invalid topology for the display\n");
- return -EINVAL;
- }
-
- /**
- * Set the requirement based on caps if not set from user space
- * This will ensure to select LM tied with DS blocks
- * Currently, DS blocks are tied with LM 0 and LM 1 (primary display)
- */
- if (!RM_RQ_DS(reqs) && rm->hw_mdp->caps->has_dest_scaler &&
- conn_state->connector->connector_type == DRM_MODE_CONNECTOR_DSI)
- reqs->top_ctrl |= BIT(DPU_RM_TOPCTL_DS);
-
- DRM_DEBUG_KMS("top_ctrl: 0x%llX num_h_tiles: %d\n", reqs->top_ctrl,
- reqs->hw_res.display_num_of_h_tiles);
- DRM_DEBUG_KMS("num_lm: %d num_ctl: %d topology: %d split_display: %d\n",
- reqs->topology->num_lm, reqs->topology->num_ctl,
- reqs->topology->top_name,
- reqs->topology->needs_split_display);
+ DRM_DEBUG_KMS("num_lm: %d num_enc: %d num_intf: %d\n",
+ reqs->topology.num_lm, reqs->topology.num_enc,
+ reqs->topology.num_intf);
return 0;
}
-static struct dpu_rm_rsvp *_dpu_rm_get_rsvp(
- struct dpu_rm *rm,
- struct drm_encoder *enc)
+static void _dpu_rm_clear_mapping(uint32_t *res_mapping, int cnt,
+ uint32_t enc_id)
{
- struct dpu_rm_rsvp *i;
+ int i;
- if (!rm || !enc) {
- DPU_ERROR("invalid params\n");
- return NULL;
+ for (i = 0; i < cnt; i++) {
+ if (res_mapping[i] == enc_id)
+ res_mapping[i] = 0;
}
-
- if (list_empty(&rm->rsvps))
- return NULL;
-
- list_for_each_entry(i, &rm->rsvps, list)
- if (i->enc_id == enc->base.id)
- return i;
-
- return NULL;
}
-static struct drm_connector *_dpu_rm_get_connector(
- struct drm_encoder *enc)
+void dpu_rm_release(struct dpu_global_state *global_state,
+ struct drm_encoder *enc)
{
- struct drm_connector *conn = NULL;
- struct list_head *connector_list =
- &enc->dev->mode_config.connector_list;
-
- list_for_each_entry(conn, connector_list, head)
- if (conn->encoder == enc)
- return conn;
-
- return NULL;
-}
-
-/**
- * _dpu_rm_release_rsvp - release resources and release a reservation
- * @rm: KMS handle
- * @rsvp: RSVP pointer to release and release resources for
- */
-static void _dpu_rm_release_rsvp(
- struct dpu_rm *rm,
- struct dpu_rm_rsvp *rsvp,
- struct drm_connector *conn)
-{
- struct dpu_rm_rsvp *rsvp_c, *rsvp_n;
- struct dpu_rm_hw_blk *blk;
- enum dpu_hw_blk_type type;
-
- if (!rsvp)
- return;
-
- DPU_DEBUG("rel rsvp %d enc %d\n", rsvp->seq, rsvp->enc_id);
-
- list_for_each_entry_safe(rsvp_c, rsvp_n, &rm->rsvps, list) {
- if (rsvp == rsvp_c) {
- list_del(&rsvp_c->list);
- break;
- }
- }
-
- for (type = 0; type < DPU_HW_BLK_MAX; type++) {
- list_for_each_entry(blk, &rm->hw_blks[type], list) {
- if (blk->rsvp == rsvp) {
- blk->rsvp = NULL;
- DPU_DEBUG("rel rsvp %d enc %d %d %d\n",
- rsvp->seq, rsvp->enc_id,
- blk->type, blk->id);
- }
- if (blk->rsvp_nxt == rsvp) {
- blk->rsvp_nxt = NULL;
- DPU_DEBUG("rel rsvp_nxt %d enc %d %d %d\n",
- rsvp->seq, rsvp->enc_id,
- blk->type, blk->id);
- }
- }
- }
-
- kfree(rsvp);
-}
-
-void dpu_rm_release(struct dpu_rm *rm, struct drm_encoder *enc)
-{
- struct dpu_rm_rsvp *rsvp;
- struct drm_connector *conn;
-
- if (!rm || !enc) {
- DPU_ERROR("invalid params\n");
- return;
- }
-
- mutex_lock(&rm->rm_lock);
-
- rsvp = _dpu_rm_get_rsvp(rm, enc);
- if (!rsvp) {
- DPU_ERROR("failed to find rsvp for enc %d\n", enc->base.id);
- goto end;
- }
-
- conn = _dpu_rm_get_connector(enc);
- if (!conn) {
- DPU_ERROR("failed to get connector for enc %d\n", enc->base.id);
- goto end;
- }
-
- _dpu_rm_release_rsvp(rm, rsvp, conn);
-end:
- mutex_unlock(&rm->rm_lock);
-}
-
-static int _dpu_rm_commit_rsvp(
- struct dpu_rm *rm,
- struct dpu_rm_rsvp *rsvp,
- struct drm_connector_state *conn_state)
-{
- struct dpu_rm_hw_blk *blk;
- enum dpu_hw_blk_type type;
- int ret = 0;
-
- /* Swap next rsvp to be the active */
- for (type = 0; type < DPU_HW_BLK_MAX; type++) {
- list_for_each_entry(blk, &rm->hw_blks[type], list) {
- if (blk->rsvp_nxt) {
- blk->rsvp = blk->rsvp_nxt;
- blk->rsvp_nxt = NULL;
- }
- }
- }
-
- if (!ret)
- DRM_DEBUG_KMS("rsrv enc %d topology %d\n", rsvp->enc_id,
- rsvp->topology);
-
- return ret;
+ _dpu_rm_clear_mapping(global_state->pingpong_to_enc_id,
+ ARRAY_SIZE(global_state->pingpong_to_enc_id), enc->base.id);
+ _dpu_rm_clear_mapping(global_state->mixer_to_enc_id,
+ ARRAY_SIZE(global_state->mixer_to_enc_id), enc->base.id);
+ _dpu_rm_clear_mapping(global_state->ctl_to_enc_id,
+ ARRAY_SIZE(global_state->ctl_to_enc_id), enc->base.id);
+ _dpu_rm_clear_mapping(global_state->intf_to_enc_id,
+ ARRAY_SIZE(global_state->intf_to_enc_id), enc->base.id);
}
int dpu_rm_reserve(
struct dpu_rm *rm,
+ struct dpu_global_state *global_state,
struct drm_encoder *enc,
struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state,
- struct msm_display_topology topology,
- bool test_only)
+ struct msm_display_topology topology)
{
- struct dpu_rm_rsvp *rsvp_cur, *rsvp_nxt;
struct dpu_rm_requirements reqs;
int ret;
-
- if (!rm || !enc || !crtc_state || !conn_state) {
- DPU_ERROR("invalid arguments\n");
- return -EINVAL;
- }
/* Check if this is just a page-flip */
if (!drm_atomic_crtc_needs_modeset(crtc_state))
return 0;
- DRM_DEBUG_KMS("reserving hw for conn %d enc %d crtc %d test_only %d\n",
- conn_state->connector->base.id, enc->base.id,
- crtc_state->crtc->base.id, test_only);
+ if (IS_ERR(global_state)) {
+ DPU_ERROR("failed to global state\n");
+ return PTR_ERR(global_state);
+ }
- mutex_lock(&rm->rm_lock);
+ DRM_DEBUG_KMS("reserving hw for enc %d crtc %d\n",
+ enc->base.id, crtc_state->crtc->base.id);
- _dpu_rm_print_rsvps(rm, DPU_RM_STAGE_BEGIN);
-
- ret = _dpu_rm_populate_requirements(rm, enc, crtc_state,
- conn_state, &reqs, topology);
+ ret = _dpu_rm_populate_requirements(enc, &reqs, topology);
if (ret) {
DPU_ERROR("failed to populate hw requirements\n");
- goto end;
+ return ret;
}
- /*
- * We only support one active reservation per-hw-block. But to implement
- * transactional semantics for test-only, and for allowing failure while
- * modifying your existing reservation, over the course of this
- * function we can have two reservations:
- * Current: Existing reservation
- * Next: Proposed reservation. The proposed reservation may fail, or may
- * be discarded if in test-only mode.
- * If reservation is successful, and we're not in test-only, then we
- * replace the current with the next.
- */
- rsvp_nxt = kzalloc(sizeof(*rsvp_nxt), GFP_KERNEL);
- if (!rsvp_nxt) {
- ret = -ENOMEM;
- goto end;
- }
-
- rsvp_cur = _dpu_rm_get_rsvp(rm, enc);
-
- /*
- * User can request that we clear out any reservation during the
- * atomic_check phase by using this CLEAR bit
- */
- if (rsvp_cur && test_only && RM_RQ_CLEAR(&reqs)) {
- DPU_DEBUG("test_only & CLEAR: clear rsvp[s%de%d]\n",
- rsvp_cur->seq, rsvp_cur->enc_id);
- _dpu_rm_release_rsvp(rm, rsvp_cur, conn_state->connector);
- rsvp_cur = NULL;
- _dpu_rm_print_rsvps(rm, DPU_RM_STAGE_AFTER_CLEAR);
- }
-
- /* Check the proposed reservation, store it in hw's "next" field */
- ret = _dpu_rm_make_next_rsvp(rm, enc, crtc_state, conn_state,
- rsvp_nxt, &reqs);
-
- _dpu_rm_print_rsvps(rm, DPU_RM_STAGE_AFTER_RSVPNEXT);
-
- if (ret) {
+ ret = _dpu_rm_make_reservation(rm, global_state, enc, &reqs);
+ if (ret)
DPU_ERROR("failed to reserve hw resources: %d\n", ret);
- _dpu_rm_release_rsvp(rm, rsvp_nxt, conn_state->connector);
- } else if (test_only && !RM_RQ_LOCK(&reqs)) {
- /*
- * Normally, if test_only, test the reservation and then undo
- * However, if the user requests LOCK, then keep the reservation
- * made during the atomic_check phase.
- */
- DPU_DEBUG("test_only: discard test rsvp[s%de%d]\n",
- rsvp_nxt->seq, rsvp_nxt->enc_id);
- _dpu_rm_release_rsvp(rm, rsvp_nxt, conn_state->connector);
- } else {
- if (test_only && RM_RQ_LOCK(&reqs))
- DPU_DEBUG("test_only & LOCK: lock rsvp[s%de%d]\n",
- rsvp_nxt->seq, rsvp_nxt->enc_id);
- _dpu_rm_release_rsvp(rm, rsvp_cur, conn_state->connector);
- ret = _dpu_rm_commit_rsvp(rm, rsvp_nxt, conn_state);
- }
-
- _dpu_rm_print_rsvps(rm, DPU_RM_STAGE_FINAL);
-
-end:
- mutex_unlock(&rm->rm_lock);
return ret;
}
+
+int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
+ struct dpu_global_state *global_state, uint32_t enc_id,
+ enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size)
+{
+ struct dpu_hw_blk **hw_blks;
+ uint32_t *hw_to_enc_id;
+ int i, num_blks, max_blks;
+
+ switch (type) {
+ case DPU_HW_BLK_PINGPONG:
+ hw_blks = rm->pingpong_blks;
+ hw_to_enc_id = global_state->pingpong_to_enc_id;
+ max_blks = ARRAY_SIZE(rm->pingpong_blks);
+ break;
+ case DPU_HW_BLK_LM:
+ hw_blks = rm->mixer_blks;
+ hw_to_enc_id = global_state->mixer_to_enc_id;
+ max_blks = ARRAY_SIZE(rm->mixer_blks);
+ break;
+ case DPU_HW_BLK_CTL:
+ hw_blks = rm->ctl_blks;
+ hw_to_enc_id = global_state->ctl_to_enc_id;
+ max_blks = ARRAY_SIZE(rm->ctl_blks);
+ break;
+ case DPU_HW_BLK_INTF:
+ hw_blks = rm->intf_blks;
+ hw_to_enc_id = global_state->intf_to_enc_id;
+ max_blks = ARRAY_SIZE(rm->intf_blks);
+ break;
+ case DPU_HW_BLK_DSPP:
+ hw_blks = rm->dspp_blks;
+ hw_to_enc_id = global_state->dspp_to_enc_id;
+ max_blks = ARRAY_SIZE(rm->dspp_blks);
+ break;
+ default:
+ DPU_ERROR("blk type %d not managed by rm\n", type);
+ return 0;
+ }
+
+ num_blks = 0;
+ for (i = 0; i < max_blks; i++) {
+ if (hw_to_enc_id[i] != enc_id)
+ continue;
+
+ if (num_blks == blks_size) {
+ DPU_ERROR("More than %d resources assigned to enc %d\n",
+ blks_size, enc_id);
+ break;
+ }
+ if (!hw_blks[i]) {
+ DPU_ERROR("Allocated resource %d unavailable to assign to enc %d\n",
+ type, enc_id);
+ break;
+ }
+ blks[num_blks++] = hw_blks[i];
+ }
+
+ return num_blks;
+}
--
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