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Diffstat (limited to 'libpsn00b/psxcd/psxcd.c')
-rw-r--r--libpsn00b/psxcd/psxcd.c371
1 files changed, 0 insertions, 371 deletions
diff --git a/libpsn00b/psxcd/psxcd.c b/libpsn00b/psxcd/psxcd.c
deleted file mode 100644
index 9392d30..0000000
--- a/libpsn00b/psxcd/psxcd.c
+++ /dev/null
@@ -1,371 +0,0 @@
-#include <stdint.h>
-#include <assert.h>
-#include <psxgpu.h>
-#include <psxapi.h>
-#include <psxcd.h>
-
-#define READ_TIMEOUT 600 // 10 seconds for NTSC
-
-extern volatile char _cd_ack_wait;
-extern volatile uint8_t _cd_last_int;
-extern volatile uint8_t _cd_last_mode;
-extern volatile uint8_t _cd_status;
-extern volatile CdlCB _cd_callback_int1_data;
-
-volatile uint8_t *_cd_result_ptr;
-
-// For read retry
-volatile CdlLOC _cd_last_setloc;
-volatile uint32_t *_cd_last_read_addr;
-volatile int _cd_last_sector_count;
-
-int _cd_media_changed;
-
-void _cd_init(void);
-void _cd_control(unsigned char com, const void *param, int plen);
-void _cd_wait_ack(void);
-void _cd_wait(void);
-
-int CdInit(void) {
- // Sets up CD-ROM hardware and low-level subsystem
- _cd_init();
-
- // So CD ISO file system component will update the ISO descriptor
- _cd_media_changed = 1;
-
- // Issue commands to initialize the CD-ROM hardware
- CdControl(CdlNop, 0, 0);
- CdControl(CdlInit, 0, 0);
-
- if(CdSync(0, 0) != CdlDiskError) {
- CdControl(CdlDemute, 0, 0);
- _sdk_log("setup done\n");
- } else {
- _sdk_log("setup error, bad disc/drive or no disc inserted\n");
- }
-
- return 1;
-}
-
-int CdControl(unsigned char com, const void *param, unsigned char *result)
-{
- // Don't issue command if ack is not received yet
- if( _cd_ack_wait )
- {
- return 0;
- }
-
- _cd_result_ptr = result;
-
- CdControlF(com, param);
- _cd_wait_ack();
-
- // Set media changed flag if lid had been opened
- if( (CdStatus()&0x10) )
- {
- _cd_media_changed = 1;
- }
-
- return 1;
-}
-
-int CdControlB(unsigned char com, const void *param, unsigned char *result)
-{
- if( !CdControl(com, param, result) )
- {
- return 0;
- }
-
- CdSync(0, 0);
- return 1;
-}
-
-int CdControlF(unsigned char com, const void *param)
-{
- int param_len=0;
-
- // Command specific parameters
- switch(com)
- {
- case CdlSetloc:
- param_len = 3;
- _cd_last_setloc = *((CdlLOC*)param);
- break;
- case CdlPlay:
- if( param )
- {
- param_len = 1;
- }
- break;
- case CdlSetfilter:
- param_len = 2;
- break;
- case CdlSetmode:
- case CdlSetsession:
- case CdlTest:
- case CdlGetTD:
- param_len = 1;
- break;
- case CdlReadN:
- case CdlReadS:
- case CdlSeekL:
- case CdlSeekP:
- if( param )
- {
- _cd_control(CdlSetloc, param, 3);
- _cd_last_setloc = *((CdlLOC*)param);
- }
- break;
- }
-
- // Issue CD command
- _cd_control(com, param, param_len);
-
- return 1;
-}
-
-int CdSync(int mode, unsigned char *result)
-{
- int cdirq;
-
- if( mode )
- {
- if( result )
- {
- *result = _cd_status;
- }
-
- cdirq = _cd_last_int;
- if( cdirq == CdlAcknowledge )
- {
- cdirq = CdlComplete;
- }
- return cdirq;
- }
-
- _cd_wait();
-
- if( result )
- {
- *result = _cd_status;
- }
-
- cdirq = _cd_last_int;
- if( cdirq == CdlAcknowledge )
- {
- cdirq = CdlComplete;
- }
-
- return cdirq;
-}
-
-int CdGetToc(CdlLOC *toc)
-{
- uint8_t track_info[8];
- int i,tracks;
-
- // Get number of tracks
- if( !CdControl(CdlGetTN, 0, track_info) )
- {
- return 0;
- }
-
- if( CdSync(1, 0) != CdlComplete )
- {
- return 0;
- }
-
- tracks = 1+(btoi(track_info[2])-btoi(track_info[1]));
-
- // Get track positions
- for(i=0; i<tracks; i++)
- {
- int t = itob(1+i);
- if( !CdControl(CdlGetTD, (uint8_t*)&t, (uint8_t*)&toc[i]) )
- {
- return 0;
- }
- if( CdSync(1, 0) != CdlComplete )
- {
- return 0;
- }
- toc[i].sector = 0;
- toc[i].track = 1+i;
- }
-
- return tracks;
-}
-
-CdlLOC *CdIntToPos(int i, CdlLOC *p) {
-
- i += 150;
-
- p->minute = itob((i/75)/60);
- p->second = itob((i/75)%60);
- p->sector = itob(i%75);
-
- return p;
-
-}
-
-int CdPosToInt(const CdlLOC *p)
-{
- return ((75*(btoi(p->minute)*60))+(75*btoi(p->second))+btoi(p->sector))-150;
-}
-
-int CdStatus(void)
-{
- return _cd_status;
-}
-
-int CdMode(void)
-{
- return _cd_last_mode;
-}
-
-
-// CD data read routines
-volatile int _cd_sector_count = 0;
-volatile uint32_t *_cd_read_addr;
-volatile uint8_t _cd_read_result[8];
-volatile uint32_t _cd_read_oldcb;
-volatile uint32_t _cd_read_sector_sz;
-volatile uint32_t _cd_read_counter;
-
-
-
-volatile CdlCB _cd_read_cb;
-
-// Sector callback
-static void _CdReadReadyCallback(int status, unsigned char *result)
-{
- _cd_read_counter = VSync(-1);
-
- if( status == CdlDataReady )
- {
- // Fetch sector from CD controller
- CdGetSector((void*)_cd_read_addr, _cd_read_sector_sz);
-
- // Increment destination address
- _cd_read_addr += _cd_read_sector_sz;
-
- // Subtract sector count
- _cd_sector_count--;
- }
-
- // End reading with pause command when sector count reaches zero
- // or when an error occurs
- if( ( _cd_sector_count <= 0 ) || ( status == CdlDiskError ) )
- {
- // Stop reading
- _cd_control(CdlPause, 0, 0);
-
- // Revert previous ready callback
- _cd_callback_int1_data = (CdlCB)_cd_read_oldcb;
-
- // Execute read completion callback
- if( _cd_read_cb )
- {
- _cd_read_cb(status, result);
- }
- }
-}
-
-int CdRead(int sectors, uint32_t *buf, int mode)
-{
- // Set sectors to read count
- _cd_sector_count = sectors;
- _cd_last_sector_count = sectors;
- _cd_last_read_addr = buf;
- _cd_read_addr = buf;
-
- // Determine sector based on mode flags
- if( mode & CdlModeSize )
- _cd_read_sector_sz = 2340 / 4;
- else
- _cd_read_sector_sz = 2048 / 4;
-
- _cd_read_counter = VSync(-1);
-
- // Set read callback
- EnterCriticalSection();
- _cd_read_oldcb = CdReadyCallback(_CdReadReadyCallback);
- ExitCriticalSection();
-
- // Set specified mode
- CdControl(CdlSetmode, (uint8_t*)&mode, 0);
-
- // Begin reading sectors
- CdControl(CdlReadN, 0, (uint8_t*)_cd_read_result);
-
- return 0;
-}
-
-static void CdDoRetry()
-{
- int cb;
-
- _sdk_log("retrying read...\n");
-
- // Stop reading
- CdControl(CdlPause, 0, 0);
- CdSync(0, 0);
-
- // Reset parameters for retrying read operation
- _cd_sector_count = _cd_last_sector_count;
- _cd_read_addr = _cd_last_read_addr;
-
- // Reset timeout
- _cd_read_counter = VSync(-1);
-
- EnterCriticalSection();
- CdReadyCallback(_CdReadReadyCallback);
- ExitCriticalSection();
-
- // Retry read
- CdControl(CdlSetloc, (void*)&_cd_last_setloc, 0);
- CdControl(CdlReadN, 0, (uint8_t*)_cd_read_result);
-}
-
-int CdReadSync(int mode, uint8_t *result)
-{
- if( (VSync(-1)-_cd_read_counter) > READ_TIMEOUT )
- {
- CdDoRetry();
- }
-
- if( mode )
- {
- if( CdSync(1, 0) == CdlDiskError )
- {
- return -1;
- }
- return _cd_sector_count;
- }
-
- while(_cd_sector_count > 0)
- {
- if( (VSync(-1)-_cd_read_counter) > READ_TIMEOUT )
- {
- CdDoRetry();
- }
- }
-
- if( CdSync(0, result) != CdlComplete )
- {
- return -1;
- }
-
- return 0;
-}
-
-uint32_t CdReadCallback(CdlCB func)
-{
- unsigned int old_func;
-
- old_func = (unsigned int)_cd_read_cb;
-
- _cd_read_cb = func;
-
- return old_func;
-}
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