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#include "dolphin/dvd/dvdqueue.h"
#include "dolphin/os/OS.h"
static struct {
/* 0x00 */ struct DVDCommandBlock * next;
/* 0x04 */ struct DVDCommandBlock * prev;
} WaitingQueue[4];
static struct DVDCommandBlock * PopWaitingQueuePrio(long prio);
void __DVDClearWaitingQueue(void) {
unsigned long i;
struct DVDCommandBlock * q;
for(i = 0; i < 4; i++) {
q = (struct DVDCommandBlock *)&WaitingQueue[i].next;
q->next = q;
q->prev = q;
}
}
int __DVDPushWaitingQueue(long prio, struct DVDCommandBlock * block) {
int enabled = OSDisableInterrupts();
struct DVDCommandBlock * q = (struct DVDCommandBlock *)&WaitingQueue[prio];
q->prev->next = block;
block->prev = q->prev;
block->next = q;
q->prev = block;
OSRestoreInterrupts(enabled);
return 1;
}
static struct DVDCommandBlock * PopWaitingQueuePrio(long prio) {
struct DVDCommandBlock * tmp;
int enabled;
struct DVDCommandBlock * q;
enabled = OSDisableInterrupts();
q = (struct DVDCommandBlock *)&WaitingQueue[prio];
ASSERTLINE(0x57, q->next != q);
tmp = q->next;
q->next = tmp->next;
tmp->next->prev = q;
OSRestoreInterrupts(enabled);
tmp->next = 0;
tmp->prev = 0;
return tmp;
}
struct DVDCommandBlock * __DVDPopWaitingQueue(void) {
unsigned long i;
int enabled;
struct DVDCommandBlock * q;
enabled = OSDisableInterrupts();
for(i = 0; i < 4; i++) {
q = (struct DVDCommandBlock *)&WaitingQueue[i];
if (q->next != q) {
OSRestoreInterrupts(enabled);
return PopWaitingQueuePrio(i);
}
}
OSRestoreInterrupts(enabled);
return NULL;
}
int __DVDCheckWaitingQueue(void) {
unsigned long i;
int enabled;
struct DVDCommandBlock * q;
enabled = OSDisableInterrupts();
for(i = 0; i < 4; i++) {
q = (struct DVDCommandBlock *)&WaitingQueue[i];
if (q->next != q) {
OSRestoreInterrupts(enabled);
return 1;
}
}
OSRestoreInterrupts(enabled);
return 0;
}
int __DVDDequeueWaitingQueue(struct DVDCommandBlock * block) {
int enabled;
struct DVDCommandBlock * prev;
struct DVDCommandBlock * next;
enabled = OSDisableInterrupts();
prev = block->prev;
next = block->next;
if (prev == NULL || next == NULL) {
OSRestoreInterrupts(enabled);
return 0;
}
prev->next = next;
next->prev = prev;
OSRestoreInterrupts(enabled);
return 1;
}
int __DVDIsBlockInWaitingQueue(struct DVDCommandBlock * block) {
unsigned long i;
struct DVDCommandBlock * start;
struct DVDCommandBlock * q;
for(i = 0; i < 4; i++) {
start = (struct DVDCommandBlock *)&WaitingQueue[i];
if (start->next == start) {
continue;
}
for(q = start->next; q != start; q = q->next) {
if (q == block) {
return 1;
}
}
}
return 0;
}
static char * CommandNames[16] = {
"",
"READ",
"SEEK",
"CHANGE_DISK",
"BSREAD",
"READID",
"INITSTREAM",
"CANCELSTREAM",
"STOP_STREAM_AT_END",
"REQUEST_AUDIO_ERROR",
"REQUEST_PLAY_ADDR",
"REQUEST_START_ADDR",
"REQUEST_LENGTH",
"AUDIO_BUFFER_CONFIG",
"INQUIRY",
"BS_CHANGE_DISK",
};
void DVDDumpWaitingQueue(void) {
unsigned long i;
struct DVDCommandBlock * start;
struct DVDCommandBlock * q;
OSReport("==== DVD Waiting Queue Status ====\n");
for(i = 0; i < 4; i++) {
OSReport("< Queue #%d > ", i);
start = (struct DVDCommandBlock *)&WaitingQueue[i];
if (start->next == start) {
OSReport("None\n");
} else {
OSReport("\n");
for(q = start->next; q != start; q = q->next) {
OSReport("0x%08x: Command: %s ", q, CommandNames[q->command]);
if (q->command == 1) {
OSReport("Disk offset: %d, Length: %d, Addr: 0x%08x\n", q->offset, q->length, q->buffer);
} else {
OSReport("\n");
}
}
}
}
}
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