608 lines
16 KiB
C
608 lines
16 KiB
C
#include "xhci-mtk-scheduler.h"
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#include <linux/kernel.h> /* printk() */
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static struct sch_ep **ss_out_eps[MAX_EP_NUM];
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static struct sch_ep **ss_in_eps[MAX_EP_NUM];
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static struct sch_ep **hs_eps[MAX_EP_NUM]; //including tt isoc
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static struct sch_ep **tt_intr_eps[MAX_EP_NUM];
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int mtk_xhci_scheduler_init(void){
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int i;
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for(i=0; i<MAX_EP_NUM; i++){
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ss_out_eps[i] = NULL;
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}
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for(i=0; i<MAX_EP_NUM; i++){
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ss_in_eps[i] = NULL;
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}
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for(i=0; i<MAX_EP_NUM; i++){
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hs_eps[i] = NULL;
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}
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for(i=0; i<MAX_EP_NUM; i++){
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tt_intr_eps[i] = NULL;
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}
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return 0;
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}
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int add_sch_ep(int dev_speed, int is_in, int isTT, int ep_type, int maxp, int interval, int burst
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, int mult, int offset, int repeat, int pkts, int cs_count, int burst_mode
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, int bw_cost, mtk_u32 *ep, struct sch_ep *tmp_ep){
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struct sch_ep **ep_array;
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int i;
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if(is_in && dev_speed == USB_SPEED_SUPER ){
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ep_array = (struct sch_ep **)ss_in_eps;
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}
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else if(dev_speed == USB_SPEED_SUPER){
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ep_array = (struct sch_ep **)ss_out_eps;
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}
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else if(dev_speed == USB_SPEED_HIGH || (isTT && ep_type == USB_EP_ISOC)){
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ep_array = (struct sch_ep **)hs_eps;
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}
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else{
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ep_array = (struct sch_ep **)tt_intr_eps;
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}
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for(i=0; i<MAX_EP_NUM; i++){
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if(ep_array[i] == NULL){
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tmp_ep->dev_speed = dev_speed;
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tmp_ep->isTT = isTT;
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tmp_ep->is_in = is_in;
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tmp_ep->ep_type = ep_type;
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tmp_ep->maxp = maxp;
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tmp_ep->interval = interval;
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tmp_ep->burst = burst;
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tmp_ep->mult = mult;
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tmp_ep->offset = offset;
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tmp_ep->repeat = repeat;
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tmp_ep->pkts = pkts;
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tmp_ep->cs_count = cs_count;
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tmp_ep->burst_mode = burst_mode;
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tmp_ep->bw_cost = bw_cost;
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tmp_ep->ep = ep;
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ep_array[i] = tmp_ep;
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return SCH_SUCCESS;
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}
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}
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return SCH_FAIL;
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}
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int count_ss_bw(int is_in, int ep_type, int maxp, int interval, int burst, int mult, int offset, int repeat
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, int td_size){
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int i, j, k;
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int bw_required[3];
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int final_bw_required;
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int bw_required_per_repeat;
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int tmp_bw_required;
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struct sch_ep *cur_sch_ep;
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struct sch_ep **ep_array;
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int cur_offset;
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int cur_ep_offset;
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int tmp_offset;
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int tmp_interval;
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int ep_offset;
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int ep_interval;
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int ep_repeat;
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int ep_mult;
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if(is_in){
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ep_array = (struct sch_ep **)ss_in_eps;
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}
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else{
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ep_array = (struct sch_ep **)ss_out_eps;
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}
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bw_required[0] = 0;
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bw_required[1] = 0;
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bw_required[2] = 0;
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if(repeat == 0){
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final_bw_required = 0;
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for(i=0; i<MAX_EP_NUM; i++){
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cur_sch_ep = ep_array[i];
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if(cur_sch_ep == NULL){
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continue;
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}
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ep_interval = cur_sch_ep->interval;
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ep_offset = cur_sch_ep->offset;
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if(cur_sch_ep->repeat == 0){
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if(ep_interval >= interval){
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tmp_offset = ep_offset + ep_interval - offset;
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tmp_interval = interval;
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}
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else{
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tmp_offset = offset + interval - ep_offset;
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tmp_interval = ep_interval;
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}
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if(tmp_offset % tmp_interval == 0){
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final_bw_required += cur_sch_ep->bw_cost;
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}
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}
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else{
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ep_repeat = cur_sch_ep->repeat;
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ep_mult = cur_sch_ep->mult;
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for(k=0; k<=ep_mult; k++){
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cur_ep_offset = ep_offset+(k*ep_mult);
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if(ep_interval >= interval){
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tmp_offset = cur_ep_offset + ep_interval - offset;
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tmp_interval = interval;
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}
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else{
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tmp_offset = offset + interval - cur_ep_offset;
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tmp_interval = ep_interval;
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}
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if(tmp_offset % tmp_interval == 0){
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final_bw_required += cur_sch_ep->bw_cost;
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break;
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}
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}
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}
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}
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final_bw_required += td_size;
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}
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else{
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bw_required_per_repeat = maxp * (burst+1);
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for(j=0; j<=mult; j++){
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tmp_bw_required = 0;
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cur_offset = offset+(j*repeat);
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for(i=0; i<MAX_EP_NUM; i++){
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cur_sch_ep = ep_array[i];
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if(cur_sch_ep == NULL){
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continue;
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}
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ep_interval = cur_sch_ep->interval;
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ep_offset = cur_sch_ep->offset;
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if(cur_sch_ep->repeat == 0){
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if(ep_interval >= interval){
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tmp_offset = ep_offset + ep_interval - cur_offset;
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tmp_interval = interval;
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}
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else{
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tmp_offset = cur_offset + interval - ep_offset;
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tmp_interval = ep_interval;
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}
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if(tmp_offset % tmp_interval == 0){
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tmp_bw_required += cur_sch_ep->bw_cost;
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}
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}
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else{
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ep_repeat = cur_sch_ep->repeat;
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ep_mult = cur_sch_ep->mult;
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for(k=0; k<=ep_mult; k++){
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cur_ep_offset = ep_offset+(k*ep_repeat);
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if(ep_interval >= interval){
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tmp_offset = cur_ep_offset + ep_interval - cur_offset;
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tmp_interval = interval;
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}
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else{
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tmp_offset = cur_offset + interval - cur_ep_offset;
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tmp_interval = ep_interval;
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}
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if(tmp_offset % tmp_interval == 0){
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tmp_bw_required += cur_sch_ep->bw_cost;
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break;
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}
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}
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}
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}
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bw_required[j] = tmp_bw_required;
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}
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final_bw_required = SS_BW_BOUND;
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for(j=0; j<=mult; j++){
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if(bw_required[j] < final_bw_required){
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final_bw_required = bw_required[j];
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}
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}
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final_bw_required += bw_required_per_repeat;
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}
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return final_bw_required;
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}
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int count_hs_bw(int ep_type, int maxp, int interval, int offset, int td_size){
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int i;
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int bw_required;
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struct sch_ep *cur_sch_ep;
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int tmp_offset;
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int tmp_interval;
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int ep_offset;
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int ep_interval;
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int cur_tt_isoc_interval; //for isoc tt check
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bw_required = 0;
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for(i=0; i<MAX_EP_NUM; i++){
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cur_sch_ep = (struct sch_ep *)hs_eps[i];
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if(cur_sch_ep == NULL){
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continue;
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}
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ep_offset = cur_sch_ep->offset;
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ep_interval = cur_sch_ep->interval;
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if(cur_sch_ep->isTT && cur_sch_ep->ep_type == USB_EP_ISOC){
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cur_tt_isoc_interval = ep_interval<<3;
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if(ep_interval >= interval){
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tmp_offset = ep_offset + cur_tt_isoc_interval - offset;
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tmp_interval = interval;
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}
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else{
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tmp_offset = offset + interval - ep_offset;
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tmp_interval = cur_tt_isoc_interval;
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}
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if(cur_sch_ep->is_in){
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if((tmp_offset%tmp_interval >=2) && (tmp_offset%tmp_interval <= cur_sch_ep->cs_count)){
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bw_required += 188;
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}
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}
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else{
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if(tmp_offset%tmp_interval <= cur_sch_ep->cs_count){
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bw_required += 188;
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}
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}
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}
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else{
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if(ep_interval >= interval){
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tmp_offset = ep_offset + ep_interval - offset;
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tmp_interval = interval;
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}
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else{
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tmp_offset = offset + interval - ep_offset;
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tmp_interval = ep_interval;
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}
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if(tmp_offset%tmp_interval == 0){
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bw_required += cur_sch_ep->bw_cost;
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}
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}
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}
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bw_required += td_size;
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return bw_required;
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}
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int count_tt_isoc_bw(int is_in, int maxp, int interval, int offset, int td_size){
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char is_cs;
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int mframe_idx, frame_idx, s_frame, s_mframe, cur_mframe;
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int bw_required, max_bw;
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int ss_cs_count;
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int cs_mframe;
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int max_frame;
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int i,j;
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struct sch_ep *cur_sch_ep;
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int ep_offset;
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int ep_interval;
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int ep_cs_count;
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int tt_isoc_interval; //for isoc tt check
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int cur_tt_isoc_interval; //for isoc tt check
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int tmp_offset;
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int tmp_interval;
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is_cs = 0;
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tt_isoc_interval = interval<<3; //frame to mframe
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if(is_in){
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is_cs = 1;
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}
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s_frame = offset/8;
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s_mframe = offset%8;
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ss_cs_count = (maxp + (188 - 1))/188;
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if(is_cs){
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cs_mframe = offset%8 + 2 + ss_cs_count;
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if (cs_mframe <= 6)
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ss_cs_count += 2;
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else if (cs_mframe == 7)
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ss_cs_count++;
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else if (cs_mframe > 8)
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return -1;
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}
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max_bw = 0;
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if(is_in){
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i=2;
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}
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for(cur_mframe = offset+i; i<ss_cs_count; cur_mframe++, i++){
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bw_required = 0;
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for(j=0; j<MAX_EP_NUM; j++){
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cur_sch_ep = (struct sch_ep *)hs_eps[j];
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if(cur_sch_ep == NULL){
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continue;
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}
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ep_offset = cur_sch_ep->offset;
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ep_interval = cur_sch_ep->interval;
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if(cur_sch_ep->isTT && cur_sch_ep->ep_type == USB_EP_ISOC){
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//isoc tt
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//check if mframe offset overlap
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//if overlap, add 188 to the bw
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cur_tt_isoc_interval = ep_interval<<3;
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if(cur_tt_isoc_interval >= tt_isoc_interval){
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tmp_offset = (ep_offset+cur_tt_isoc_interval) - cur_mframe;
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tmp_interval = tt_isoc_interval;
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}
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else{
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tmp_offset = (cur_mframe+tt_isoc_interval) - ep_offset;
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tmp_interval = cur_tt_isoc_interval;
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}
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if(cur_sch_ep->is_in){
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if((tmp_offset%tmp_interval >=2) && (tmp_offset%tmp_interval <= cur_sch_ep->cs_count)){
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bw_required += 188;
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}
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}
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else{
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if(tmp_offset%tmp_interval <= cur_sch_ep->cs_count){
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bw_required += 188;
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}
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}
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}
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else if(cur_sch_ep->ep_type == USB_EP_INT || cur_sch_ep->ep_type == USB_EP_ISOC){
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//check if mframe
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if(ep_interval >= tt_isoc_interval){
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tmp_offset = (ep_offset+ep_interval) - cur_mframe;
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tmp_interval = tt_isoc_interval;
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}
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else{
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tmp_offset = (cur_mframe+tt_isoc_interval) - ep_offset;
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tmp_interval = ep_interval;
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}
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if(tmp_offset%tmp_interval == 0){
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bw_required += cur_sch_ep->bw_cost;
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}
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}
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}
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bw_required += 188;
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if(bw_required > max_bw){
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max_bw = bw_required;
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}
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}
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return max_bw;
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}
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int count_tt_intr_bw(int interval, int frame_offset){
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//check all eps in tt_intr_eps
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int ret;
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int i,j;
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int ep_offset;
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int ep_interval;
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int tmp_offset;
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int tmp_interval;
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ret = SCH_SUCCESS;
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struct sch_ep *cur_sch_ep;
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for(i=0; i<MAX_EP_NUM; i++){
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cur_sch_ep = (struct sch_ep *)tt_intr_eps[i];
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if(cur_sch_ep == NULL){
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continue;
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}
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ep_offset = cur_sch_ep->offset;
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ep_interval = cur_sch_ep->interval;
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if(ep_interval >= interval){
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tmp_offset = ep_offset + ep_interval - frame_offset;
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tmp_interval = interval;
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}
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else{
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tmp_offset = frame_offset + interval - ep_offset;
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tmp_interval = ep_interval;
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}
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if(tmp_offset%tmp_interval==0){
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return SCH_FAIL;
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}
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}
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return SCH_SUCCESS;
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}
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struct sch_ep * mtk_xhci_scheduler_remove_ep(int dev_speed, int is_in, int isTT, int ep_type, mtk_u32 *ep){
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int i;
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struct sch_ep **ep_array;
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struct sch_ep *cur_ep;
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if (is_in && dev_speed == USB_SPEED_SUPER) {
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ep_array = (struct sch_ep **)ss_in_eps;
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}
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else if (dev_speed == USB_SPEED_SUPER) {
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ep_array = (struct sch_ep **)ss_out_eps;
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}
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else if (dev_speed == USB_SPEED_HIGH || (isTT && ep_type == USB_EP_ISOC)) {
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ep_array = (struct sch_ep **)hs_eps;
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}
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else {
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ep_array = (struct sch_ep **)tt_intr_eps;
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}
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for (i = 0; i < MAX_EP_NUM; i++) {
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cur_ep = (struct sch_ep *)ep_array[i];
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if(cur_ep != NULL && cur_ep->ep == ep){
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ep_array[i] = NULL;
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return cur_ep;
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}
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}
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return NULL;
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}
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int mtk_xhci_scheduler_add_ep(int dev_speed, int is_in, int isTT, int ep_type, int maxp, int interval, int burst
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, int mult, mtk_u32 *ep, mtk_u32 *ep_ctx, struct sch_ep *sch_ep){
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mtk_u32 bPkts = 0;
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mtk_u32 bCsCount = 0;
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mtk_u32 bBm = 1;
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mtk_u32 bOffset = 0;
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mtk_u32 bRepeat = 0;
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int ret;
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struct mtk_xhci_ep_ctx *temp_ep_ctx;
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int td_size;
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int mframe_idx, frame_idx;
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int bw_cost;
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int cur_bw, best_bw, best_bw_idx,repeat, max_repeat, best_bw_repeat;
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int cur_offset, cs_mframe;
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int break_out;
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int frame_interval;
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printk(KERN_ERR "add_ep parameters, dev_speed %d, is_in %d, isTT %d, ep_type %d, maxp %d, interval %d, burst %d, mult %d, ep 0x%x, ep_ctx 0x%x, sch_ep 0x%x\n", dev_speed, is_in, isTT, ep_type, maxp
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, interval, burst, mult, ep, ep_ctx, sch_ep);
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if(isTT && ep_type == USB_EP_INT && ((dev_speed == USB_SPEED_LOW) || (dev_speed == USB_SPEED_FULL))){
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frame_interval = interval >> 3;
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for(frame_idx=0; frame_idx<frame_interval; frame_idx++){
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printk(KERN_ERR "check tt_intr_bw interval %d, frame_idx %d\n", frame_interval, frame_idx);
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if(count_tt_intr_bw(frame_interval, frame_idx) == SCH_SUCCESS){
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printk(KERN_ERR "check OK............\n");
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bOffset = frame_idx<<3;
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bPkts = 1;
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bCsCount = 3;
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bw_cost = maxp;
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bRepeat = 0;
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if(add_sch_ep(dev_speed, is_in, isTT, ep_type, maxp, frame_interval, burst, mult
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, bOffset, bRepeat, bPkts, bCsCount, bBm, maxp, ep, sch_ep) == SCH_FAIL){
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return SCH_FAIL;
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}
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ret = SCH_SUCCESS;
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break;
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}
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}
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}
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else if(isTT && ep_type == USB_EP_ISOC){
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best_bw = HS_BW_BOUND;
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best_bw_idx = -1;
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cur_bw = 0;
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td_size = maxp;
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break_out = 0;
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frame_interval = interval>>3;
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for(frame_idx=0; frame_idx<frame_interval && !break_out; frame_idx++){
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for(mframe_idx=0; mframe_idx<8; mframe_idx++){
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cur_offset = (frame_idx*8) + mframe_idx;
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cur_bw = count_tt_isoc_bw(is_in, maxp, frame_interval, cur_offset, td_size);
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if(cur_bw > 0 && cur_bw < best_bw){
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best_bw_idx = cur_offset;
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best_bw = cur_bw;
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if(cur_bw == td_size || cur_bw < (HS_BW_BOUND>>1)){
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break_out = 1;
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break;
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}
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}
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}
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}
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if(best_bw_idx == -1){
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return SCH_FAIL;
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}
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else{
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bOffset = best_bw_idx;
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bPkts = 1;
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bCsCount = (maxp + (188 - 1)) / 188;
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if(is_in){
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cs_mframe = bOffset%8 + 2 + bCsCount;
|
|
if (cs_mframe <= 6)
|
|
bCsCount += 2;
|
|
else if (cs_mframe == 7)
|
|
bCsCount++;
|
|
}
|
|
bw_cost = 188;
|
|
bRepeat = 0;
|
|
if(add_sch_ep( dev_speed, is_in, isTT, ep_type, maxp, interval, burst, mult
|
|
, bOffset, bRepeat, bPkts, bCsCount, bBm, bw_cost, ep, sch_ep) == SCH_FAIL){
|
|
return SCH_FAIL;
|
|
}
|
|
ret = SCH_SUCCESS;
|
|
}
|
|
}
|
|
else if((dev_speed == USB_SPEED_FULL || dev_speed == USB_SPEED_LOW) && ep_type == USB_EP_INT){
|
|
bPkts = 1;
|
|
ret = SCH_SUCCESS;
|
|
}
|
|
else if(dev_speed == USB_SPEED_FULL && ep_type == USB_EP_ISOC){
|
|
bPkts = 1;
|
|
ret = SCH_SUCCESS;
|
|
}
|
|
else if(dev_speed == USB_SPEED_HIGH && (ep_type == USB_EP_INT || ep_type == USB_EP_ISOC)){
|
|
best_bw = HS_BW_BOUND;
|
|
best_bw_idx = -1;
|
|
cur_bw = 0;
|
|
td_size = maxp*(burst+1);
|
|
for(cur_offset = 0; cur_offset<interval; cur_offset++){
|
|
cur_bw = count_hs_bw(ep_type, maxp, interval, cur_offset, td_size);
|
|
if(cur_bw > 0 && cur_bw < best_bw){
|
|
best_bw_idx = cur_offset;
|
|
best_bw = cur_bw;
|
|
if(cur_bw == td_size || cur_bw < (HS_BW_BOUND>>1)){
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(best_bw_idx == -1){
|
|
return SCH_FAIL;
|
|
}
|
|
else{
|
|
bOffset = best_bw_idx;
|
|
bPkts = burst + 1;
|
|
bCsCount = 0;
|
|
bw_cost = td_size;
|
|
bRepeat = 0;
|
|
if(add_sch_ep(dev_speed, is_in, isTT, ep_type, maxp, interval, burst, mult
|
|
, bOffset, bRepeat, bPkts, bCsCount, bBm, bw_cost, ep, sch_ep) == SCH_FAIL){
|
|
return SCH_FAIL;
|
|
}
|
|
ret = SCH_SUCCESS;
|
|
}
|
|
}
|
|
else if(dev_speed == USB_SPEED_SUPER && (ep_type == USB_EP_INT || ep_type == USB_EP_ISOC)){
|
|
best_bw = SS_BW_BOUND;
|
|
best_bw_idx = -1;
|
|
cur_bw = 0;
|
|
td_size = maxp * (mult+1) * (burst+1);
|
|
if(mult == 0){
|
|
max_repeat = 0;
|
|
}
|
|
else{
|
|
max_repeat = (interval-1)/(mult+1);
|
|
}
|
|
break_out = 0;
|
|
for(frame_idx = 0; (frame_idx < interval) && !break_out; frame_idx++){
|
|
for(repeat = max_repeat; repeat >= 0; repeat--){
|
|
cur_bw = count_ss_bw(is_in, ep_type, maxp, interval, burst, mult, frame_idx
|
|
, repeat, td_size);
|
|
printk(KERN_ERR "count_ss_bw, frame_idx %d, repeat %d, td_size %d, result bw %d\n"
|
|
, frame_idx, repeat, td_size, cur_bw);
|
|
if(cur_bw > 0 && cur_bw < best_bw){
|
|
best_bw_idx = frame_idx;
|
|
best_bw_repeat = repeat;
|
|
best_bw = cur_bw;
|
|
if(cur_bw <= td_size || cur_bw < (HS_BW_BOUND>>1)){
|
|
break_out = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
printk(KERN_ERR "final best idx %d, best repeat %d\n", best_bw_idx, best_bw_repeat);
|
|
if(best_bw_idx == -1){
|
|
return SCH_FAIL;
|
|
}
|
|
else{
|
|
bOffset = best_bw_idx;
|
|
bCsCount = 0;
|
|
bRepeat = best_bw_repeat;
|
|
if(bRepeat == 0){
|
|
bw_cost = (burst+1)*(mult+1)*maxp;
|
|
bPkts = (burst+1)*(mult+1);
|
|
}
|
|
else{
|
|
bw_cost = (burst+1)*maxp;
|
|
bPkts = (burst+1);
|
|
}
|
|
if(add_sch_ep(dev_speed, is_in, isTT, ep_type, maxp, interval, burst, mult
|
|
, bOffset, bRepeat, bPkts, bCsCount, bBm, bw_cost, ep, sch_ep) == SCH_FAIL){
|
|
return SCH_FAIL;
|
|
}
|
|
ret = SCH_SUCCESS;
|
|
}
|
|
}
|
|
else{
|
|
bPkts = 1;
|
|
ret = SCH_SUCCESS;
|
|
}
|
|
if(ret == SCH_SUCCESS){
|
|
temp_ep_ctx = (struct mtk_xhci_ep_ctx *)ep_ctx;
|
|
temp_ep_ctx->reserved[0] |= (BPKTS(bPkts) | BCSCOUNT(bCsCount) | BBM(bBm));
|
|
temp_ep_ctx->reserved[1] |= (BOFFSET(bOffset) | BREPEAT(bRepeat));
|
|
|
|
printk(KERN_DEBUG "[DBG] BPKTS: %x, BCSCOUNT: %x, BBM: %x\n", bPkts, bCsCount, bBm);
|
|
printk(KERN_DEBUG "[DBG] BOFFSET: %x, BREPEAT: %x\n", bOffset, bRepeat);
|
|
return SCH_SUCCESS;
|
|
}
|
|
else{
|
|
return SCH_FAIL;
|
|
}
|
|
}
|