// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright ( c ) 2016 - 2018 , The Linux Foundation . All rights reserved .
* Copyright ( c ) 2023 - 2024 Qualcomm Innovation Center , Inc . All rights reserved .
*/
#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_cwb.h"
#include "dpu_hw_pingpong.h"
#include "dpu_hw_sspp.h"
#include "dpu_hw_intf.h"
#include "dpu_hw_wb.h"
#include "dpu_hw_dspp.h"
#include "dpu_hw_merge3d.h"
#include "dpu_hw_dsc.h"
#include "dpu_encoder.h"
#include "dpu_trace.h"
static inline bool reserved_by_other(uint32_t *res_map, int idx,
uint32_t crtc_id)
{
return res_map[idx] && res_map[idx] != crtc_id;
}
/**
* dpu_rm_init - Read hardware catalog and create reservation tracking objects
* for all HW blocks .
* @ dev : Corresponding device for devres management
* @ rm : DPU Resource Manager handle
* @ cat : Pointer to hardware catalog
* @ mdss_data : Pointer to MDSS / UBWC configuration
* @ mmio : mapped register io address of MDP
* @ return : 0 on Success otherwise - ERROR
*/
int dpu_rm_init(struct drm_device *dev,
struct dpu_rm *rm,
const struct dpu_mdss_cfg *cat,
const struct qcom_ubwc_cfg_data *mdss_data,
void __iomem *mmio)
{
int rc, i;
if (!rm || !cat || !mmio) {
DPU_ERROR("invalid kms\n" );
return -EINVAL;
}
/* Clear, setup lists */
memset(rm, 0 , sizeof (*rm));
rm->has_legacy_ctls = (cat->mdss_ver->core_major_ver < 5 );
/* 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];
hw = dpu_hw_lm_init(dev, lm, mmio, cat->mdss_ver);
if (IS_ERR(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;
}
for (i = 0 ; i < cat->merge_3d_count; i++) {
struct dpu_hw_merge_3d *hw;
const struct dpu_merge_3d_cfg *merge_3d = &cat->merge_3d[i];
hw = dpu_hw_merge_3d_init(dev, merge_3d, mmio);
if (IS_ERR(hw)) {
rc = PTR_ERR(hw);
DPU_ERROR("failed merge_3d object creation: err %d\n" ,
rc);
goto fail;
}
rm->merge_3d_blks[merge_3d->id - MERGE_3D_0] = &hw->base;
}
for (i = 0 ; i < cat->pingpong_count; i++) {
struct dpu_hw_pingpong *hw;
const struct dpu_pingpong_cfg *pp = &cat->pingpong[i];
hw = dpu_hw_pingpong_init(dev, pp, mmio, cat->mdss_ver);
if (IS_ERR(hw)) {
rc = PTR_ERR(hw);
DPU_ERROR("failed pingpong object creation: err %d\n" ,
rc);
goto fail;
}
if (pp->merge_3d && pp->merge_3d < MERGE_3D_MAX)
hw->merge_3d = to_dpu_hw_merge_3d(rm->merge_3d_blks[pp->merge_3d - MERGE_3D_0]);
rm->pingpong_blks[pp->id - PINGPONG_0] = &hw->base;
}
for (i = 0 ; i < cat->intf_count; i++) {
struct dpu_hw_intf *hw;
const struct dpu_intf_cfg *intf = &cat->intf[i];
hw = dpu_hw_intf_init(dev, intf, mmio, cat->mdss_ver);
if (IS_ERR(hw)) {
rc = PTR_ERR(hw);
DPU_ERROR("failed intf object creation: err %d\n" , rc);
goto fail;
}
rm->hw_intf[intf->id - INTF_0] = hw;
}
for (i = 0 ; i < cat->wb_count; i++) {
struct dpu_hw_wb *hw;
const struct dpu_wb_cfg *wb = &cat->wb[i];
hw = dpu_hw_wb_init(dev, wb, mmio, cat->mdss_ver);
if (IS_ERR(hw)) {
rc = PTR_ERR(hw);
DPU_ERROR("failed wb object creation: err %d\n" , rc);
goto fail;
}
rm->hw_wb[wb->id - WB_0] = hw;
}
for (i = 0 ; i < cat->cwb_count; i++) {
struct dpu_hw_cwb *hw;
const struct dpu_cwb_cfg *cwb = &cat->cwb[i];
hw = dpu_hw_cwb_init(dev, cwb, mmio);
if (IS_ERR(hw)) {
rc = PTR_ERR(hw);
DPU_ERROR("failed cwb object creation: err %d\n" , rc);
goto fail;
}
rm->cwb_blks[cwb->id - CWB_0] = &hw->base;
}
for (i = 0 ; i < cat->ctl_count; i++) {
struct dpu_hw_ctl *hw;
const struct dpu_ctl_cfg *ctl = &cat->ctl[i];
hw = dpu_hw_ctl_init(dev, ctl, mmio, cat->mdss_ver, cat->mixer_count, cat->mixer);
if (IS_ERR(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->dspp_count; i++) {
struct dpu_hw_dspp *hw;
const struct dpu_dspp_cfg *dspp = &cat->dspp[i];
hw = dpu_hw_dspp_init(dev, dspp, mmio);
if (IS_ERR(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;
}
for (i = 0 ; i < cat->dsc_count; i++) {
struct dpu_hw_dsc *hw;
const struct dpu_dsc_cfg *dsc = &cat->dsc[i];
if (cat->mdss_ver->core_major_ver >= 7 )
hw = dpu_hw_dsc_init_1_2(dev, dsc, mmio);
else
hw = dpu_hw_dsc_init(dev, dsc, mmio, cat->mdss_ver);
if (IS_ERR(hw)) {
rc = PTR_ERR(hw);
DPU_ERROR("failed dsc object creation: err %d\n" , rc);
goto fail;
}
rm->dsc_blks[dsc->id - DSC_0] = &hw->base;
}
for (i = 0 ; i < cat->sspp_count; i++) {
struct dpu_hw_sspp *hw;
const struct dpu_sspp_cfg *sspp = &cat->sspp[i];
hw = dpu_hw_sspp_init(dev, sspp, mmio, mdss_data, cat->mdss_ver);
if (IS_ERR(hw)) {
rc = PTR_ERR(hw);
DPU_ERROR("failed sspp object creation: err %d\n" , rc);
goto fail;
}
rm->hw_sspp[sspp->id - SSPP_NONE] = hw;
}
if (cat->cdm) {
struct dpu_hw_cdm *hw;
hw = dpu_hw_cdm_init(dev, cat->cdm, mmio, cat->mdss_ver);
if (IS_ERR(hw)) {
rc = PTR_ERR(hw);
DPU_ERROR("failed cdm object creation: err %d\n" , rc);
goto fail;
}
rm->cdm_blk = &hw->base;
}
return 0 ;
fail:
return rc ? rc : -EFAULT;
}
static bool _dpu_rm_needs_split_display(const struct msm_display_topology *top)
{
return top->num_intf > 1 ;
}
/**
* _ dpu_rm_get_lm_peer - get the id of a mixer which is a peer of the primary
* @ rm : dpu resource manager handle
* @ primary_idx : index of primary mixer in rm - > mixer_blks [ ]
*
* Returns : lm peer mixed id on success or % - EINVAL on error
*/
static int _dpu_rm_get_lm_peer(struct dpu_rm *rm, int primary_idx)
{
const struct dpu_lm_cfg *prim_lm_cfg;
prim_lm_cfg = to_dpu_hw_mixer(rm->mixer_blks[primary_idx])->cap;
if (prim_lm_cfg->lm_pair >= LM_0 && prim_lm_cfg->lm_pair < LM_MAX)
return prim_lm_cfg->lm_pair - LM_0;
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_mux = topology->num_lm, cwb_mux_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 reserving resources for platforms with no
* PINGPONG_CWB
*/
for (int i = 0 ; i < ARRAY_SIZE(rm->mixer_blks) &&
cwb_mux_count < num_cwb_mux; i++) {
for (int j = 0 ; j < ARRAY_SIZE(rm->cwb_blks); j++) {
/*
* Odd LMs must be assigned to odd CWB muxes and even
* LMs with even CWB muxes .
*
* Since the RM HW block array index is based on the HW
* block ids , we can also use the array index to enforce
* the odd / even rule . See dpu_rm_init ( ) for more
* information
*/
if (reserved_by_other(global_state->cwb_to_crtc_id, j, crtc_id) ||
i % 2 != j % 2 )
continue ;
cwb_mux_idx[cwb_mux_count] = j;
cwb_pp_idx[cwb_mux_count] = j + cwb_pp_start_idx;
cwb_mux_count++;
break ;
}
}
if (cwb_mux_count != num_cwb_mux) {
DPU_ERROR("Unable to reserve all CWB PINGPONGs\n" );
return -ENAVAIL;
}
for (int i = 0 ; i < cwb_mux_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
* pingpong
* @ rm : dpu resource manager handle
* @ global_state : resources shared across multiple kms objects
* @ crtc_id : crtc 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 [ ] .
* @ topology : selected topology for the display
* 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_global_state *global_state,
uint32_t crtc_id, int lm_idx, int *pp_idx, int *dspp_idx,
struct msm_display_topology *topology)
{
const struct dpu_lm_cfg *lm_cfg;
int idx;
/* Already reserved? */
if (reserved_by_other(global_state->mixer_to_crtc_id, lm_idx, crtc_id)) {
DPU_DEBUG("lm %d already reserved\n" , lm_idx + LM_0);
return false ;
}
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(global_state->pingpong_to_crtc_id, idx, crtc_id)) {
DPU_DEBUG("lm %d pp %d already reserved\n" , lm_cfg->id,
lm_cfg->pingpong);
return false ;
}
*pp_idx = idx;
if (!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_crtc_id, idx, crtc_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_global_state *global_state,
uint32_t crtc_id,
struct msm_display_topology *topology)
{
int lm_idx[MAX_BLOCKS];
int pp_idx[MAX_BLOCKS];
int dspp_idx[MAX_BLOCKS] = {0 };
int i, lm_count = 0 ;
if (!topology->num_lm) {
DPU_ERROR("invalid number of lm: %d\n" , topology->num_lm);
return -EINVAL;
}
/* Find a primary mixer */
for (i = 0 ; i < ARRAY_SIZE(rm->mixer_blks) &&
lm_count < topology->num_lm; i++) {
if (!rm->mixer_blks[i])
continue ;
lm_count = 0 ;
lm_idx[lm_count] = i;
if (!_dpu_rm_check_lm_and_get_connected_blks(rm, global_state,
crtc_id, i, &pp_idx[lm_count],
&dspp_idx[lm_count], topology)) {
continue ;
}
++lm_count;
/* Valid primary mixer found, find matching peers */
if (lm_count < topology->num_lm) {
int j = _dpu_rm_get_lm_peer(rm, i);
/* ignore the peer if there is an error or if the peer was already processed */
if (j < 0 || j < i)
continue ;
if (!rm->mixer_blks[j])
continue ;
if (!_dpu_rm_check_lm_and_get_connected_blks(rm,
global_state, crtc_id, j,
&pp_idx[lm_count], &dspp_idx[lm_count],
topology)) {
continue ;
}
lm_idx[lm_count] = j;
++lm_count;
}
}
if (lm_count != topology->num_lm) {
DPU_DEBUG("unable to find appropriate mixers\n" );
return -ENAVAIL;
}
for (i = 0 ; i < lm_count; i++) {
global_state->mixer_to_crtc_id[lm_idx[i]] = crtc_id;
global_state->pingpong_to_crtc_id[pp_idx[i]] = crtc_id;
global_state->dspp_to_crtc_id[dspp_idx[i]] =
topology->num_dspp ? crtc_id : 0 ;
trace_dpu_rm_reserve_lms(lm_idx[i] + LM_0, crtc_id,
pp_idx[i] + PINGPONG_0);
}
return 0 ;
}
static int _dpu_rm_reserve_ctls(
struct dpu_rm *rm,
struct dpu_global_state *global_state,
uint32_t crtc_id,
const struct msm_display_topology *top)
{
int ctl_idx[MAX_BLOCKS];
int i = 0 , j, num_ctls;
bool needs_split_display;
if (rm->has_legacy_ctls) {
/*
* TODO : check if there is a need for special handling if
* DPU < 5 . 0 get CWB support .
*/
num_ctls = top->num_intf;
needs_split_display = _dpu_rm_needs_split_display(top);
} else {
/* use single CTL */
num_ctls = 1 ;
needs_split_display = false ;
}
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_crtc_id, j, crtc_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" , j + CTL_0, features);
if (needs_split_display != has_split_display)
continue ;
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(ctl_idx) && i < num_ctls; i++) {
global_state->ctl_to_crtc_id[ctl_idx[i]] = crtc_id;
trace_dpu_rm_reserve_ctls(i + CTL_0, crtc_id);
}
return 0 ;
}
static int _dpu_rm_pingpong_next_index(struct dpu_global_state *global_state,
int start,
uint32_t crtc_id)
{
int i;
for (i = start; i < (PINGPONG_MAX - PINGPONG_0); i++) {
if (global_state->pingpong_to_crtc_id[i] == crtc_id)
return i;
}
return -ENAVAIL;
}
static int _dpu_rm_pingpong_dsc_check(int dsc_idx, int pp_idx)
{
/*
* DSC with even index must be used with the PINGPONG with even index
* DSC with odd index must be used with the PINGPONG with odd index
*/
if ((dsc_idx & 0 x01) != (pp_idx & 0 x01))
return -ENAVAIL;
return 0 ;
}
static int _dpu_rm_dsc_alloc(struct dpu_rm *rm,
struct dpu_global_state *global_state,
uint32_t crtc_id,
const struct msm_display_topology *top)
{
int num_dsc = 0 ;
int pp_idx = 0 ;
int dsc_idx;
int ret;
for (dsc_idx = 0 ; dsc_idx < ARRAY_SIZE(rm->dsc_blks) &&
num_dsc < top->num_dsc; dsc_idx++) {
if (!rm->dsc_blks[dsc_idx])
continue ;
if (reserved_by_other(global_state->dsc_to_crtc_id, dsc_idx, crtc_id))
continue ;
pp_idx = _dpu_rm_pingpong_next_index(global_state, pp_idx, crtc_id);
if (pp_idx < 0 )
return -ENAVAIL;
ret = _dpu_rm_pingpong_dsc_check(dsc_idx, pp_idx);
if (ret)
return -ENAVAIL;
global_state->dsc_to_crtc_id[dsc_idx] = crtc_id;
num_dsc++;
pp_idx++;
}
if (num_dsc < top->num_dsc) {
DPU_ERROR("DSC allocation failed num_dsc=%d required=%d\n" ,
num_dsc, top->num_dsc);
return -ENAVAIL;
}
return 0 ;
}
static int _dpu_rm_dsc_alloc_pair(struct dpu_rm *rm,
struct dpu_global_state *global_state,
uint32_t crtc_id,
const struct msm_display_topology *top)
{
int num_dsc = 0 ;
int dsc_idx, pp_idx = 0 ;
int ret;
/* only start from even dsc index */
for (dsc_idx = 0 ; dsc_idx < ARRAY_SIZE(rm->dsc_blks) &&
num_dsc < top->num_dsc; dsc_idx += 2 ) {
if (!rm->dsc_blks[dsc_idx] ||
!rm->dsc_blks[dsc_idx + 1 ])
continue ;
/* consective dsc index to be paired */
if (reserved_by_other(global_state->dsc_to_crtc_id, dsc_idx, crtc_id) ||
reserved_by_other(global_state->dsc_to_crtc_id, dsc_idx + 1 , crtc_id))
continue ;
pp_idx = _dpu_rm_pingpong_next_index(global_state, pp_idx, crtc_id);
if (pp_idx < 0 )
return -ENAVAIL;
ret = _dpu_rm_pingpong_dsc_check(dsc_idx, pp_idx);
if (ret) {
pp_idx = 0 ;
continue ;
}
pp_idx = _dpu_rm_pingpong_next_index(global_state, pp_idx + 1 , crtc_id);
if (pp_idx < 0 )
return -ENAVAIL;
ret = _dpu_rm_pingpong_dsc_check(dsc_idx + 1 , pp_idx);
if (ret) {
pp_idx = 0 ;
continue ;
}
global_state->dsc_to_crtc_id[dsc_idx] = crtc_id;
global_state->dsc_to_crtc_id[dsc_idx + 1 ] = crtc_id;
num_dsc += 2 ;
pp_idx++; /* start for next pair */
}
if (num_dsc < top->num_dsc) {
DPU_ERROR("DSC allocation failed num_dsc=%d required=%d\n" ,
num_dsc, top->num_dsc);
return -ENAVAIL;
}
return 0 ;
}
static int _dpu_rm_reserve_dsc(struct dpu_rm *rm,
struct dpu_global_state *global_state,
uint32_t crtc_id,
const struct msm_display_topology *top)
{
if (!top->num_dsc || !top->num_intf)
return 0 ;
/*
* Facts :
* 1 ) no pingpong split ( two layer mixers shared one pingpong )
* 2 ) DSC pair starts from even index , such as index ( 0 , 1 ) , ( 2 , 3 ) , etc
* 3 ) even PINGPONG connects to even DSC
* 4 ) odd PINGPONG connects to odd DSC
* 5 ) pair : encoder + - - > pp_idx_0 - - > dsc_idx_0
* + - - > pp_idx_1 - - > dsc_idx_1
*/
/* num_dsc should be either 1, 2 or 4 */
if (top->num_dsc > top->num_intf) /* merge mode */
return _dpu_rm_dsc_alloc_pair(rm, global_state, crtc_id, top);
else
return _dpu_rm_dsc_alloc(rm, global_state, crtc_id, top);
return 0 ;
}
static int _dpu_rm_reserve_cdm(struct dpu_rm *rm,
struct dpu_global_state *global_state,
uint32_t crtc_id,
int num_cdm)
{
/* try allocating only one CDM block */
if (!rm->cdm_blk) {
DPU_ERROR("CDM block does not exist\n" );
return -EIO;
}
if (num_cdm > 1 ) {
DPU_ERROR("More than 1 INTF requesting CDM\n" );
return -EINVAL;
}
if (global_state->cdm_to_crtc_id) {
DPU_ERROR("CDM_0 is already allocated\n" );
return -EIO;
}
global_state->cdm_to_crtc_id = crtc_id;
return 0 ;
}
static int _dpu_rm_make_reservation(
struct dpu_rm *rm,
struct dpu_global_state *global_state,
uint32_t crtc_id,
struct msm_display_topology *topology)
{
int ret;
ret = _dpu_rm_reserve_lms(rm, global_state, crtc_id, topology);
if (ret) {
DPU_ERROR("unable to find appropriate mixers\n" );
return ret;
}
if (topology->cwb_enabled) {
ret = _dpu_rm_reserve_cwb_mux_and_pingpongs(rm, global_state,
crtc_id, topology);
if (ret)
return ret;
}
ret = _dpu_rm_reserve_ctls(rm, global_state, crtc_id,
topology);
if (ret) {
DPU_ERROR("unable to find appropriate CTL\n" );
return ret;
}
ret = _dpu_rm_reserve_dsc(rm, global_state, crtc_id, topology);
if (ret)
return ret;
if (topology->num_cdm > 0 ) {
ret = _dpu_rm_reserve_cdm(rm, global_state, crtc_id, topology->num_cdm);
if (ret) {
DPU_ERROR("unable to find CDM blk\n" );
return ret;
}
}
return ret;
}
static void _dpu_rm_clear_mapping(uint32_t *res_mapping, int cnt,
uint32_t crtc_id)
{
int i;
for (i = 0 ; i < cnt; i++) {
if (res_mapping[i] == crtc_id)
res_mapping[i] = 0 ;
}
}
/**
* dpu_rm_release - Given the encoder for the display chain , release any
* HW blocks previously reserved for that use case .
* @ global_state : resources shared across multiple kms objects
* @ crtc : DRM CRTC handle
* @ return : 0 on Success otherwise - ERROR
*/
void dpu_rm_release(struct dpu_global_state *global_state,
struct drm_crtc *crtc)
{
uint32_t crtc_id = crtc->base.id;
_dpu_rm_clear_mapping(global_state->pingpong_to_crtc_id,
ARRAY_SIZE(global_state->pingpong_to_crtc_id), crtc_id);
_dpu_rm_clear_mapping(global_state->mixer_to_crtc_id,
ARRAY_SIZE(global_state->mixer_to_crtc_id), crtc_id);
_dpu_rm_clear_mapping(global_state->ctl_to_crtc_id,
ARRAY_SIZE(global_state->ctl_to_crtc_id), crtc_id);
_dpu_rm_clear_mapping(global_state->dsc_to_crtc_id,
ARRAY_SIZE(global_state->dsc_to_crtc_id), crtc_id);
_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);
}
/**
* dpu_rm_reserve - Given a CRTC - > Encoder - > Connector display chain , analyze
* the use connections and user requirements , specified through related
* topology control properties , and reserve hardware blocks to that
* display chain .
* HW blocks can then be accessed through dpu_rm_get_ * functions .
* HW Reservations should be released via dpu_rm_release_hw .
* @ rm : DPU Resource Manager handle
* @ global_state : resources shared across multiple kms objects
* @ crtc : DRM CRTC handle
* @ topology : Pointer to topology info for the display
* @ return : 0 on Success otherwise - ERROR
*/
int dpu_rm_reserve(
struct dpu_rm *rm,
struct dpu_global_state *global_state,
struct drm_crtc *crtc,
struct msm_display_topology *topology)
{
int ret;
if (IS_ERR(global_state)) {
DPU_ERROR("failed to global state\n" );
return PTR_ERR(global_state);
}
DRM_DEBUG_KMS("reserving hw for crtc %d\n" , crtc->base.id);
DRM_DEBUG_KMS("num_lm: %d num_dsc: %d num_intf: %d\n" ,
topology->num_lm, topology->num_dsc,
topology->num_intf);
ret = _dpu_rm_make_reservation(rm, global_state, crtc->base.id, topology);
if (ret)
DPU_ERROR("failed to reserve hw resources: %d\n" , ret);
return ret;
}
static struct dpu_hw_sspp *dpu_rm_try_sspp(struct dpu_rm *rm,
struct dpu_global_state *global_state,
struct drm_crtc *crtc,
struct dpu_rm_sspp_requirements *reqs,
unsigned int type)
{
uint32_t crtc_id = crtc->base.id;
struct dpu_hw_sspp *hw_sspp;
int i;
for (i = 0 ; i < ARRAY_SIZE(rm->hw_sspp); i++) {
if (!rm->hw_sspp[i])
continue ;
if (global_state->sspp_to_crtc_id[i])
continue ;
hw_sspp = rm->hw_sspp[i];
if (hw_sspp->cap->type != type)
continue ;
if (reqs->scale && !hw_sspp->cap->sblk->scaler_blk.len)
continue ;
// TODO: QSEED2 and RGB scalers are not yet supported
if (reqs->scale && !hw_sspp->ops.setup_scaler)
continue ;
if (reqs->yuv && !hw_sspp->cap->sblk->csc_blk.len)
continue ;
if (reqs->rot90 && !(hw_sspp->cap->features & DPU_SSPP_INLINE_ROTATION))
continue ;
global_state->sspp_to_crtc_id[i] = crtc_id;
return rm->hw_sspp[i];
}
return NULL;
}
/**
* dpu_rm_reserve_sspp - Reserve the required SSPP for the provided CRTC
* @ rm : DPU Resource Manager handle
* @ global_state : private global state
* @ crtc : DRM CRTC handle
* @ reqs : SSPP required features
*/
struct dpu_hw_sspp *dpu_rm_reserve_sspp(struct dpu_rm *rm,
struct dpu_global_state *global_state,
struct drm_crtc *crtc,
struct dpu_rm_sspp_requirements *reqs)
{
struct dpu_hw_sspp *hw_sspp = NULL;
if (!reqs->scale && !reqs->yuv)
hw_sspp = dpu_rm_try_sspp(rm, global_state, crtc, reqs, SSPP_TYPE_DMA);
if (!hw_sspp && reqs->scale)
hw_sspp = dpu_rm_try_sspp(rm, global_state, crtc, reqs, SSPP_TYPE_RGB);
if (!hw_sspp)
hw_sspp = dpu_rm_try_sspp(rm, global_state, crtc, reqs, SSPP_TYPE_VIG);
return hw_sspp;
}
/**
* dpu_rm_release_all_sspp - Given the CRTC , release all SSPP
* blocks previously reserved for that use case .
* @ global_state : resources shared across multiple kms objects
* @ crtc : DRM CRTC handle
*/
void dpu_rm_release_all_sspp(struct dpu_global_state *global_state,
struct drm_crtc *crtc)
{
uint32_t crtc_id = crtc->base.id;
_dpu_rm_clear_mapping(global_state->sspp_to_crtc_id,
ARRAY_SIZE(global_state->sspp_to_crtc_id), crtc_id);
}
/**
* dpu_rm_get_assigned_resources - Get hw resources of the given type that are
* assigned to this encoder
* @ rm : DPU Resource Manager handle
* @ global_state : resources shared across multiple kms objects
* @ crtc : DRM CRTC handle
* @ type : resource type to return data for
* @ blks : pointer to the array to be filled by HW resources
* @ blks_size : size of the @ blks array
*/
int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
struct dpu_global_state *global_state, struct drm_crtc *crtc,
enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size)
{
uint32_t crtc_id = crtc->base.id;
struct dpu_hw_blk **hw_blks;
uint32_t *hw_to_crtc_id;
int i, num_blks, max_blks;
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);
break ;
case DPU_HW_BLK_LM:
hw_blks = rm->mixer_blks;
hw_to_crtc_id = global_state->mixer_to_crtc_id;
max_blks = ARRAY_SIZE(rm->mixer_blks);
break ;
case DPU_HW_BLK_CTL:
hw_blks = rm->ctl_blks;
hw_to_crtc_id = global_state->ctl_to_crtc_id;
max_blks = ARRAY_SIZE(rm->ctl_blks);
break ;
case DPU_HW_BLK_DSPP:
hw_blks = rm->dspp_blks;
hw_to_crtc_id = global_state->dspp_to_crtc_id;
max_blks = ARRAY_SIZE(rm->dspp_blks);
break ;
case DPU_HW_BLK_DSC:
hw_blks = rm->dsc_blks;
hw_to_crtc_id = global_state->dsc_to_crtc_id;
max_blks = ARRAY_SIZE(rm->dsc_blks);
break ;
case DPU_HW_BLK_CDM:
hw_blks = &rm->cdm_blk;
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 ;
}
num_blks = 0 ;
for (i = 0 ; i < max_blks; i++) {
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);
break ;
}
if (!hw_blks[i]) {
DPU_ERROR("Allocated resource %d unavailable to assign to crtc %d\n" ,
type, crtc_id);
break ;
}
blks[num_blks++] = hw_blks[i];
}
return num_blks;
}
static void dpu_rm_print_state_helper(struct drm_printer *p,
struct dpu_hw_blk *blk,
uint32_t mapping)
{
if (!blk)
drm_puts(p, "- " );
else if (!mapping)
drm_puts(p, "# " );
else
drm_printf(p, "%d " , mapping);
}
/**
* dpu_rm_print_state - output the RM private state
* @ p : DRM printer
* @ global_state : global state
*/
void dpu_rm_print_state(struct drm_printer *p,
const struct dpu_global_state *global_state)
{
const struct dpu_rm *rm = global_state->rm;
int i;
drm_puts(p, "resource mapping:\n" );
drm_puts(p, "\tpingpong=" );
for (i = 0 ; i < ARRAY_SIZE(global_state->pingpong_to_crtc_id); i++)
dpu_rm_print_state_helper(p, rm->pingpong_blks[i],
global_state->pingpong_to_crtc_id[i]);
drm_puts(p, "\n" );
drm_puts(p, "\tmixer=" );
for (i = 0 ; i < ARRAY_SIZE(global_state->mixer_to_crtc_id); i++)
dpu_rm_print_state_helper(p, rm->mixer_blks[i],
global_state->mixer_to_crtc_id[i]);
drm_puts(p, "\n" );
drm_puts(p, "\tctl=" );
for (i = 0 ; i < ARRAY_SIZE(global_state->ctl_to_crtc_id); i++)
dpu_rm_print_state_helper(p, rm->ctl_blks[i],
global_state->ctl_to_crtc_id[i]);
drm_puts(p, "\n" );
drm_puts(p, "\tdspp=" );
for (i = 0 ; i < ARRAY_SIZE(global_state->dspp_to_crtc_id); i++)
dpu_rm_print_state_helper(p, rm->dspp_blks[i],
global_state->dspp_to_crtc_id[i]);
drm_puts(p, "\n" );
drm_puts(p, "\tdsc=" );
for (i = 0 ; i < ARRAY_SIZE(global_state->dsc_to_crtc_id); i++)
dpu_rm_print_state_helper(p, rm->dsc_blks[i],
global_state->dsc_to_crtc_id[i]);
drm_puts(p, "\n" );
drm_puts(p, "\tcdm=" );
dpu_rm_print_state_helper(p, rm->cdm_blk,
global_state->cdm_to_crtc_id);
drm_puts(p, "\n" );
drm_puts(p, "\tsspp=" );
/* skip SSPP_NONE and start from the next index */
for (i = SSPP_NONE + 1 ; i < ARRAY_SIZE(global_state->sspp_to_crtc_id); i++)
dpu_rm_print_state_helper(p, rm->hw_sspp[i] ? &rm->hw_sspp[i]->base : NULL,
global_state->sspp_to_crtc_id[i]);
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" );
}
Messung V0.5 in Prozent C=98 H=82 G=90
¤ Dauer der Verarbeitung: 0.16 Sekunden
(vorverarbeitet am 2026-10-05)
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