[Freedreno] [PATCH 3/4] drm/msm/dpu: Refactor resource manager
Drew Davenport
ddavenport at chromium.org
Wed Feb 19 17:42:26 UTC 2020
Track hardware resource objects in arrays rather than
a list and remove the resource manager's iterator idiom. Separate
the mapping of hardware resources to an encoder ID into a different
array.
Use an implicit mapping between the hardware blocks' ids, which
are 1-based, and array indices in these arrays to replace iteration
with index lookups in several places.
Signed-off-by: Drew Davenport <ddavenport at chromium.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 553 +++++++++++--------------
drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h | 22 +-
2 files changed, 255 insertions(+), 320 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
index 779df26dc81ae..f1483b00b7423 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
@@ -12,8 +12,12 @@
#include "dpu_encoder.h"
#include "dpu_trace.h"
-#define RESERVED_BY_OTHER(h, r) \
- ((h)->enc_id && (h)->enc_id != r)
+
+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
@@ -25,126 +29,40 @@ struct dpu_rm_requirements {
struct dpu_encoder_hw_resources hw_res;
};
-
-/**
- * struct dpu_rm_hw_blk - hardware block tracking list member
- * @list: List head for list of all hardware blocks tracking items
- * @id: Hardware ID number, within it's own space, ie. LM_X
- * @enc_id: Encoder id to which this blk is binded
- * @hw: Pointer to the hardware register access object for this block
- */
-struct dpu_rm_hw_blk {
- struct list_head list;
- uint32_t id;
- uint32_t enc_id;
- struct dpu_hw_blk *hw;
-};
-
-/**
- * struct dpu_rm_hw_iter - iterator for use with dpu_rm
- * @hw: dpu_hw object requested, or NULL on failure
- * @blk: dpu_rm internal block representation. Clients ignore. Used as iterator.
- * @enc_id: DRM ID of Encoder client wishes to search for, or 0 for Any Encoder
- * @type: Hardware Block Type client wishes to search for.
- */
-struct dpu_rm_hw_iter {
- void *hw;
- struct dpu_rm_hw_blk *blk;
- uint32_t enc_id;
- enum dpu_hw_blk_type type;
-};
-
-static 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)
+int dpu_rm_destroy(struct dpu_rm *rm)
{
- struct list_head *blk_list;
+ int i;
- if (!rm || !i || i->type >= DPU_HW_BLK_MAX) {
- DPU_ERROR("invalid rm\n");
- return false;
- }
+ for (i = 0; i < ARRAY_SIZE(rm->pingpong_blks); i++) {
+ struct dpu_hw_pingpong *hw;
- 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;
+ 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;
- i->blk = list_prepare_entry(i->blk, blk_list, list);
-
- list_for_each_entry_continue(i->blk, blk_list, list) {
- if (i->enc_id == i->blk->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->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;
- DPU_DEBUG("no match, type %d for enc %d\n", i->type, i->enc_id);
-
- return false;
-}
-
-static 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_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;
+ 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;
-int dpu_rm_destroy(struct dpu_rm *rm)
-{
- struct dpu_rm_hw_blk *hw_cur, *hw_nxt;
- enum dpu_hw_blk_type type;
-
- 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(type, hw_cur->hw);
- kfree(hw_cur);
+ if (rm->intf_blks[i]) {
+ hw = to_dpu_hw_intf(rm->intf_blks[i]);
+ dpu_hw_intf_destroy(hw);
}
}
@@ -153,65 +71,11 @@ int dpu_rm_destroy(struct dpu_rm *rm)
return 0;
}
-static int _dpu_rm_hw_blk_create(
- struct dpu_rm *rm,
- const struct dpu_mdss_cfg *cat,
- void __iomem *mmio,
- enum dpu_hw_blk_type type,
- uint32_t id)
-{
- struct dpu_rm_hw_blk *blk;
- void *hw;
-
- 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_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 (IS_ERR_OR_NULL(hw)) {
- DPU_ERROR("failed hw object creation: type %d, err %ld\n",
- type, PTR_ERR(hw));
- return -EFAULT;
- }
-
- blk = kzalloc(sizeof(*blk), GFP_KERNEL);
- if (!blk) {
- _dpu_rm_hw_destroy(type, hw);
- return -ENOMEM;
- }
-
- blk->id = id;
- blk->hw = hw;
- blk->enc_id = 0;
- 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)
{
int rc, i;
- enum dpu_hw_blk_type type;
if (!rm || !cat || !mmio) {
DPU_ERROR("invalid kms\n");
@@ -223,11 +87,9 @@ int dpu_rm_init(struct dpu_rm *rm,
mutex_init(&rm->rm_lock);
- for (type = 0; type < DPU_HW_BLK_MAX; type++)
- INIT_LIST_HEAD(&rm->hw_blks[type]);
-
/* Interrogate HW catalog and create tracking items for hw blocks */
for (i = 0; i < cat->mixer_count; i++) {
+ struct dpu_hw_mixer *hw;
const struct dpu_lm_cfg *lm = &cat->mixer[i];
if (lm->pingpong == PINGPONG_MAX) {
@@ -235,12 +97,17 @@ int dpu_rm_init(struct dpu_rm *rm,
continue;
}
- rc = _dpu_rm_hw_blk_create(rm, cat, mmio, DPU_HW_BLK_LM,
- cat->mixer[i].id);
- 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 %ld\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;
@@ -256,35 +123,59 @@ int dpu_rm_init(struct dpu_rm *rm,
}
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);
- 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 %ld\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);
- 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 %ld\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);
- 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 %ld\n", rc);
goto fail;
}
+ rm->ctl_blks[ctl->id - CTL_0] = &hw->base;
}
return 0;
@@ -292,7 +183,7 @@ int dpu_rm_init(struct dpu_rm *rm,
fail:
dpu_rm_destroy(rm);
- return rc;
+ return rc ? rc : -EFAULT;
}
static bool _dpu_rm_needs_split_display(const struct msm_display_topology *top)
@@ -300,72 +191,69 @@ 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;
+}
+
/**
* _dpu_rm_check_lm_and_get_connected_blks - check if proposed layer mixer meets
* proposed use case requirements, incl. hardwired dependent blocks like
* pingpong
* @rm: dpu resource manager handle
* @enc_id: encoder id requesting for allocation
- * @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
+ * @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->pongpong_blks[].
* @Return: true if lm matches all requirements, false otherwise
*/
-static bool _dpu_rm_check_lm_and_get_connected_blks(
- struct dpu_rm *rm,
- uint32_t enc_id,
- 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,
+ uint32_t enc_id, int lm_idx, int *pp_idx)
{
- 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, enc_id)) {
- DPU_DEBUG("lm %d already reserved\n", lm_cfg->id);
+ if (reserved_by_other(rm->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, enc_id)) {
- DPU_DEBUG("lm %d pp %d already reserved\n", lm->id,
- (*pp)->id);
+ if (reserved_by_other(rm->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;
return true;
}
@@ -373,11 +261,9 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm, 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 i, j, lm_count = 0;
if (!reqs->topology.num_lm) {
DPU_ERROR("invalid number of lm: %d\n", reqs->topology.num_lm);
@@ -385,36 +271,39 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm, uint32_t enc_id,
}
/* 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, enc_id, lm[lm_count],
- &pp[lm_count], NULL))
+ rm, enc_id, i, &pp_idx[lm_count])) {
continue;
+ }
++lm_count;
/* Valid primary mixer found, find matching peers */
- dpu_rm_init_hw_iter(&iter_j, 0, DPU_HW_BLK_LM);
+ for (j = i + 1; j < ARRAY_SIZE(rm->mixer_blks) &&
+ lm_count < reqs->topology.num_lm; j++) {
+ if (!rm->mixer_blks[j])
+ continue;
- while (lm_count != reqs->topology.num_lm &&
- _dpu_rm_get_hw_locked(rm, &iter_j)) {
- if (iter_i.blk == iter_j.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;
+ }
if (!_dpu_rm_check_lm_and_get_connected_blks(
- rm, enc_id, iter_j.blk,
- &pp[lm_count], iter_i.blk))
+ rm, enc_id, j, &pp_idx[lm_count])) {
continue;
+ }
- lm[lm_count] = iter_j.blk;
+ lm_idx[lm_count] = j;
++lm_count;
}
}
@@ -424,17 +313,15 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm, uint32_t enc_id,
return -ENAVAIL;
}
- for (i = 0; i < ARRAY_SIZE(lm); i++) {
- if (!lm[i])
- break;
-
- lm[i]->enc_id = enc_id;
- pp[i]->enc_id = enc_id;
+ for (i = 0; i < lm_count; i++) {
+ rm->mixer_to_enc_id[lm_idx[i]] = enc_id;
+ rm->pingpong_to_enc_id[pp_idx[i]] = enc_id;
- trace_dpu_rm_reserve_lms(lm[i]->id, enc_id, pp[i]->id);
+ trace_dpu_rm_reserve_lms(lm_idx[i] + LM_0, enc_id,
+ pp_idx[i] + PINGPONG_0);
}
- return rc;
+ return 0;
}
static int _dpu_rm_reserve_ctls(
@@ -442,47 +329,48 @@ static int _dpu_rm_reserve_ctls(
uint32_t enc_id,
const struct msm_display_topology *top)
{
- struct dpu_rm_hw_blk *ctls[MAX_BLOCKS];
- struct dpu_rm_hw_iter iter;
- int i = 0, num_ctls = 0;
- bool needs_split_display = false;
-
- memset(&ctls, 0, sizeof(ctls));
+ int ctl_idx[MAX_BLOCKS];
+ int i = 0, j, num_ctls;
+ bool needs_split_display;
/* each hw_intf needs its own hw_ctrl to program its control path */
num_ctls = top->num_intf;
needs_split_display = _dpu_rm_needs_split_display(top);
- 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;
+ for (j = 0; j < ARRAY_SIZE(rm->ctl_blks); j++) {
+ const struct dpu_hw_ctl *ctl;
+ unsigned long features;
bool has_split_display;
- if (RESERVED_BY_OTHER(iter.blk, enc_id))
+ if (!rm->ctl_blks[j])
+ continue;
+ if (reserved_by_other(rm->ctl_to_enc_id, j, enc_id))
continue;
+ ctl = to_dpu_hw_ctl(rm->ctl_blks[j]);
+ features = ctl->caps->features;
has_split_display = BIT(DPU_CTL_SPLIT_DISPLAY) & features;
- DPU_DEBUG("ctl %d caps 0x%lX\n", iter.blk->id, features);
+ DPU_DEBUG("ctl %d caps 0x%lX\n", rm->ctl_blks[j]->id, features);
if (needs_split_display != has_split_display)
continue;
- ctls[i] = iter.blk;
- DPU_DEBUG("ctl %d match\n", iter.blk->id);
+ ctl_idx[i] = j;
+ DPU_DEBUG("ctl %d match\n", j + CTL_0);
if (++i == num_ctls)
break;
+
}
if (i != num_ctls)
return -ENAVAIL;
- for (i = 0; i < ARRAY_SIZE(ctls) && i < num_ctls; i++) {
- ctls[i]->enc_id = enc_id;
- trace_dpu_rm_reserve_ctls(ctls[i]->id, enc_id);
+ for (i = 0; i < ARRAY_SIZE(ctl_idx) && i < num_ctls; i++) {
+ rm->ctl_to_enc_id[ctl_idx[i]] = enc_id;
+ trace_dpu_rm_reserve_ctls(i + CTL_0, enc_id);
}
return 0;
@@ -493,32 +381,20 @@ static int _dpu_rm_reserve_intf(
uint32_t enc_id,
uint32_t id)
{
- struct dpu_rm_hw_iter iter;
- int ret = 0;
-
- /* Find the block entry in the rm, and note the reservation */
- dpu_rm_init_hw_iter(&iter, 0, DPU_HW_BLK_INTF);
- while (_dpu_rm_get_hw_locked(rm, &iter)) {
- if (iter.blk->id != id)
- continue;
-
- if (RESERVED_BY_OTHER(iter.blk, enc_id)) {
- DPU_ERROR("intf id %d already reserved\n", id);
- return -ENAVAIL;
- }
+ int idx = id - INTF_0;
- iter.blk->enc_id = enc_id;
- trace_dpu_rm_reserve_intf(iter.blk->id, enc_id);
- break;
- }
-
- /* Shouldn't happen since intfs are fixed at probe */
- if (!iter.hw) {
+ if (!rm->intf_blks[idx]) {
DPU_ERROR("couldn't find intf id %d\n", id);
return -EINVAL;
}
- return ret;
+ if (reserved_by_other(rm->intf_to_enc_id, idx, enc_id)) {
+ DPU_ERROR("intf id %d already reserved\n", id);
+ return -ENAVAIL;
+ }
+
+ rm->intf_to_enc_id[idx] = enc_id;
+ return 0;
}
static int _dpu_rm_reserve_intf_related_hw(
@@ -583,22 +459,29 @@ static int _dpu_rm_populate_requirements(
return 0;
}
-static void _dpu_rm_release_reservation(struct dpu_rm *rm, uint32_t enc_id)
+static void _dpu_rm_clear_mapping(uint32_t *res_mapping, int cnt,
+ uint32_t enc_id)
{
- struct dpu_rm_hw_blk *blk;
- enum dpu_hw_blk_type type;
-
- for (type = 0; type < DPU_HW_BLK_MAX; type++) {
- list_for_each_entry(blk, &rm->hw_blks[type], list) {
- if (blk->enc_id == enc_id) {
- blk->enc_id = 0;
- DPU_DEBUG("rel enc %d %d %d\n", enc_id,
- type, blk->id);
- }
- }
+ int i;
+
+ for (i = 0; i < cnt; i++) {
+ if (res_mapping[i] == enc_id)
+ res_mapping[i] = 0;
}
}
+static void _dpu_rm_release_reservation(struct dpu_rm *rm, uint32_t enc_id)
+{
+ _dpu_rm_clear_mapping(rm->pingpong_to_enc_id,
+ ARRAY_SIZE(rm->pingpong_to_enc_id), enc_id);
+ _dpu_rm_clear_mapping(rm->mixer_to_enc_id,
+ ARRAY_SIZE(rm->mixer_to_enc_id), enc_id);
+ _dpu_rm_clear_mapping(rm->ctl_to_enc_id,
+ ARRAY_SIZE(rm->ctl_to_enc_id), enc_id);
+ _dpu_rm_clear_mapping(rm->intf_to_enc_id,
+ ARRAY_SIZE(rm->intf_to_enc_id), enc_id);
+}
+
void dpu_rm_release(struct dpu_rm *rm, struct drm_encoder *enc)
{
mutex_lock(&rm->rm_lock);
@@ -653,12 +536,48 @@ int dpu_rm_reserve(
int dpu_rm_get_assigned_resources(struct dpu_rm *rm, uint32_t enc_id,
enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size)
{
- struct dpu_rm_hw_iter hw_iter;
- int num_blks = 0;
+ 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 = rm->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 = rm->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 = rm->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 = rm->intf_to_enc_id;
+ max_blks = ARRAY_SIZE(rm->intf_blks);
+ break;
+ default:
+ DPU_ERROR("blk type %d not managed by rm\n", type);
+ return 0;
+ }
- dpu_rm_init_hw_iter(&hw_iter, enc_id, type);
- while (num_blks < blks_size && dpu_rm_get_hw(rm, &hw_iter))
- blks[num_blks++] = hw_iter.blk->hw;
+ 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;
+ }
+ blks[num_blks++] = hw_blks[i];
+ }
return num_blks;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
index 982b91e272275..9c8a436ba6cc1 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
@@ -11,15 +11,31 @@
#include "msm_kms.h"
#include "dpu_hw_top.h"
+
/**
* struct dpu_rm - DPU dynamic hardware resource manager
- * @hw_blks: array of lists of hardware resources present in the system, one
- * list per type of hardware block
+ * @pingpong_blks: array of pingpong hardware resources
+ * @mixer_blks: array of layer mixer hardware resources
+ * @ctl_blks: array of ctl hardware resources
+ * @intf_blks: array of intf hardware resources
+ * @pingpong_to_enc_id: mapping of pingpong hardware resources to an encoder ID
+ * @mixer_to_enc_id: mapping of mixer hardware resources to an encoder ID
+ * @ctl_to_enc_id: mapping of ctl hardware resources to an encoder ID
+ * @intf_to_enc_id: mapping of intf hardware resources to an encoder ID
* @lm_max_width: cached layer mixer maximum width
* @rm_lock: resource manager mutex
*/
struct dpu_rm {
- struct list_head hw_blks[DPU_HW_BLK_MAX];
+ struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0];
+ struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0];
+ struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0];
+ struct dpu_hw_blk *intf_blks[INTF_MAX - INTF_0];
+
+ uint32_t pingpong_to_enc_id[PINGPONG_MAX - PINGPONG_0];
+ uint32_t mixer_to_enc_id[LM_MAX - LM_0];
+ uint32_t ctl_to_enc_id[CTL_MAX - CTL_0];
+ uint32_t intf_to_enc_id[INTF_MAX - INTF_0];
+
uint32_t lm_max_width;
struct mutex rm_lock;
};
--
2.24.1
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