pcsx2/fps2bios/kernel/iopload/sifman/sifman.c

468 lines
12 KiB
C
Raw Normal View History

#include "kloadcore.h"
#include "kintrman.h"
#include "kdmacman.h"
#include "ksifman.h"
#define min(a, b) ((a)<(b)?(a):(b))
#define max(a, b) ((a)>(b)?(a):(b))
#define CONFIG_1450 (*(volatile int*)0xBF801450)
#define BD0 (*(volatile int*)0xBD000000) //mscom
#define BD1 (*(volatile int*)0xBD000010) //smcom
#define BD2 (*(volatile int*)0xBD000020) //msflag
#define BD3 (*(volatile int*)0xBD000030) //smflag
#define BD4 (*(volatile int*)0xBD000040)
#define BD5 (*(volatile int*)0xBD000050)
#define BD6 (*(volatile int*)0xBD000060)
#define BD7 (*(volatile int*)0xBD000070)
int debug=1;
#define _dprintf(fmt, args...) \
if (debug > 0) __printf("sifman: " fmt, ## args)
struct sifData{
int data,
words,
count,
addr;
};
int sifSIF2Init =0,
sifInit =0;
struct sm_internal{
short id, //+000 some id...?!?
res1; //+002 not used
int index; //+004 current position in dma buffer
struct sifData *crtbuf; //+008 address of current used buffer
struct sifData buf1[32]; //+00C first buffer
struct sifData buf2[32]; //+20C second buffer
int (*function)(int);//+40C a function ?!?
int param; //+410 a parameter for function
int res2; //+414 not used
} vars;
struct sifData one;
int res3, res4;
int _start(int argc, char* argv);
void RegisterSif0Handler();
///////////////////////////////////////////////////////////////////////
int getBD2_loopchanging(){
register int a, b;
a=BD2;
b=BD2;
while (a!=b) {
a=b;
b=BD2;
}
return a;
}
///////////////////////////////////////////////////////////////////////
int getBD3_loopchanging(){
register int a, b;
a=BD3;
b=BD3;
while (a!=b) {
a=b;
b=BD3;
}
return a;
}
///////////////////////////////////////////////////////////////////////[04]
void SifSIF2Init(){
if (sifSIF2Init!=0) return;
DMAch_SIF2_CHCR = 0; //reset ch. 2
DMAch_DPCR|= 0x800; //enable dma ch. 2
DMAch_DPCR;
sifSIF2Init =1;
}
///////////////////////////////////////////////////////////////////////[05]
void SifInit(){
u32 x, y;
u32 msflag;
_dprintf("%s: sifInit=%d\n", __FUNCTION__, sifInit);
if (sifInit!=0) return;
DMAch_DPCR2 |=0x8800; //enable dma ch. 9 and 10
DMAch_SIF9_CHCR = 0;
DMAch_SIFA_CHCR = 0;
SifSIF2Init();
if (CONFIG_1450 & 0x10)
CONFIG_1450 |= 0x10;
CONFIG_1450 |= 0x1;
RegisterSif0Handler();
CpuSuspendIntr(&x); //intrman
CpuEnableIntr(); //intrman
_dprintf("%s: waiting EE...\n", __FUNCTION__);
do { //EE kernel sif ready
CpuSuspendIntr(&y); //intrman
msflag = getBD2_loopchanging();
CpuResumeIntr(y); //intrman
} while(!(msflag & 0x10000));
_dprintf("%s: EE ready\n", __FUNCTION__);
CpuResumeIntr(x); //intrman
SifSetDChain();
SifSetIOPrcvaddr(0); //sif1 receive buffer
BD3 = 0x10000; //IOPEE_sifman_init
BD3;
sifInit =1;
_dprintf("%s ok\n", __FUNCTION__);
}
///////////////////////////////////////////////////////////////////////[02]
void SifDeinit(){
int x;
DisableIntr(INT_DMA9, &x);
ReleaseIntrHandler(INT_DMA9);
DMAch_SIF9_CHCR=0;
DMAch_SIFA_CHCR=0;
if (CONFIG_1450 & 0x10)
CONFIG_1450 |= 0x10;
}
///////////////////////////////////////////////////////////////////////[29]
int SifCheckInit(){
return sifInit;
}
///////////////////////////////////////////////////////////////////////[06]
void SifSetDChain(){
if ((BD4 & 0x40) == 0) BD4=0x40;
DMAch_SIFA_CHCR =0;
DMAch_SIFA_BCR_size =32;
DMAch_SIFA_CHCR =DMAf_08|DMAf_CO|DMAf_TR|DMAf_30;//EE->IOP (to memory)
}
///////////////////////////////////////////////////////////////////////[30]
void SifSet0CB(int (*_function)(int), int _param){
vars.function=_function;
vars.param=_param;
}
///////////////////////////////////////////////////////////////////////[31]
void SifReset0CB(){
vars.function=NULL;
vars.param=0;
}
///////////////////////////////////////////////////////////////////////
int Sif0Handler(void *common) {
struct sm_internal *vars = (struct sm_internal *)common;
int var_10;
if (vars->function)
vars->function(vars->param);
if ((DMAch_SIF9_CHCR & DMAf_TR == 0) && (vars->index>0)) {
DMAch_SIF9_CHCR =0;
DMAch_SIF9_TADR =(int)vars->crtbuf;
DMAch_SIF9_BCR =32;
if (BD4 & 0x20 == 0) BD4 = 0x20;
vars->id++;
if (vars->crtbuf == vars->buf1){
vars->index=0;
vars->crtbuf=vars->buf2;
}else
vars->crtbuf=vars->buf1;
DMAch_SIF9_CHCR = DMAf_DR|DMAf_08|DMAf_CO|DMAf_LI|DMAf_TR;//IOP->EE (from memory)
var_10=DMAch_SIF9_CHCR;
}
return 1;
}
///////////////////////////////////////////////////////////////////////
void RegisterSif0Handler(){
u32 x;
vars.index=0;
vars.crtbuf=vars.buf1;
vars.function=NULL;
vars.param=0;
CpuSuspendIntr(&x); //intrman
RegisterIntrHandler(INT_DMA9, 1, Sif0Handler, &vars); //intrman
EnableIntr(INT_DMA9); //intrman
CpuResumeIntr(x); //intrman
}
///////////////////////////////////////////////////////////////////////
void enqueue(struct sifman_DMA *psd){
vars.crtbuf[vars.index].data=(u32)psd->data & 0xFFFFFF; //16MB addressability
if (psd->attr & SIF_DMA_INT_I)
vars.crtbuf[vars.index].data |= 0x40000000;
vars.crtbuf[vars.index].words=(psd->size + 3)/4 & 0xFFFFFF;
vars.crtbuf[vars.index].count = ((psd->size + 3)/16 + (((psd->size + 3)/4) & 3))
| 0x10000000;
if (psd->attr & SIF_DMA_INT_O)
vars.crtbuf[vars.index].count |=0x80000000;
vars.crtbuf[vars.index].addr = (u32)psd->addr & 0x1FFFFFFF; //512MB addresability
vars.index++;
}
///////////////////////////////////////////////////////////////////////[07]
u32 SifSetDma(struct sifman_DMA *psd, int len){
int var_20;
register unsigned int ret;
int i;
if (32-vars.index < len) return 0; //no place
ret = vars.id;
ret = (ret << 16) | ((vars.index & 0xFF) << 8) | (len & 0xFF);
if (vars.index)
vars.crtbuf[vars.index-1].data &= 0x7FFFFFFF;
for (i=0; i<len; i++)
enqueue(&psd[i]);
vars.crtbuf[vars.index-1].data |= 0x80000000;
if ((DMAch_SIF9_CHCR & DMAf_TR) == 0) {
DMAch_SIF9_CHCR=0;
DMAch_SIF9_TADR=(int)vars.crtbuf;
if ((BD4 & 0x20) == 0) BD4=0x20;
DMAch_SIF9_BCR_size=32;
vars.index=0;
vars.id++;
if (vars.crtbuf==vars.buf1)vars.crtbuf=vars.buf2;
//stupid :D (why the if?)
DMAch_SIF9_CHCR=DMAf_DR|DMAf_08|DMAf_CO|DMAf_LI|DMAf_TR;//IOP->EE
var_20=DMAch_SIF9_CHCR; //?!?
}
return ret;
}
///////////////////////////////////////////////////////////////////////[08]
int SifDmaStat(u32 id){
if (DMAch_SIF9_CHCR & DMAf_TR){
if (id>>16 == vars.id) return 1; //waiting in queue
if (id>>16+1 == vars.id) return 0; //running
}
return -1; //terminated
}
///////////////////////////////////////////////////////////////////////[09]
void SifSend(struct sifman_DMA sd){
sd.size = sd.size /4 + ((sd.size & 3) > 0);
one.data = ((u32)sd.data & 0xFFFFFF) | 0x80000000;
one.words= sd.size & 0xFFFFFF;
if (sd.attr & SIF_DMA_INT_I) one.data |= 0x40000000;
one.count = (sd.size/4 + ((sd.size & 3)>0)) | 0x10000000;
if (sd.attr & SIF_DMA_INT_O) one.count|= 0x80000000;
one.addr = (u32)sd.addr & 0xFFFFFFF;
if (BD4 & 0x20 == 0) BD4=0x20;
DMAch_SIF9_CHCR=0;
DMAch_SIF9_TADR=(u32)&one;
DMAch_SIF9_BCR_size=32;
DMAch_SIF9_CHCR=DMAf_DR|DMAf_08|DMAf_CO|DMAf_LI|DMAf_TR; //IOP->EE
DMAch_SIF9_CHCR;
}
///////////////////////////////////////////////////////////////////////[10]
void SifSendSync(){
while (DMAch_SIF9_CHCR & DMAf_TR);
}
///////////////////////////////////////////////////////////////////////[11]
int SifIsSending(){
return (DMAch_SIF9_CHCR & DMAf_TR);
}
///////////////////////////////////////////////////////////////////////[12]
void SifSetSIF0DMA(void *data, int size, int attr){
size=size/4 + ((size & 3)>0);
if (BD4 & 0x20 == 0) BD4=0x20;
DMAch_SIF9_CHCR=0;
DMAch_SIF9_MADR=(u32)data & 0xFFFFFF;
DMAch_SIF9_BCR_size=32;
DMAch_SIF9_BCR_count=size/32 + ((size & 0x1F)>0);
DMAch_SIF9_CHCR=DMAf_DR|DMAf_CO|DMAf_TR;
DMAch_SIF9_CHCR;
}
///////////////////////////////////////////////////////////////////////[13]
void SifSendSync0(){
while (DMAch_SIF9_CHCR & DMAf_TR);
}
///////////////////////////////////////////////////////////////////////[14]
int SifIsSending0(){
return (DMAch_SIF9_CHCR & DMAf_TR);
}
///////////////////////////////////////////////////////////////////////[15]
void SifSetSIF1DMA(void *data, int size, int attr){
size=size/4 + ((size & 3)>0);
if (BD4 & 0x40 == 0) BD4=0x40;
DMAch_SIFA_CHCR=0;
DMAch_SIFA_MADR=(u32)data & 0xFFFFFF;
DMAch_SIFA_BCR_size=32;
DMAch_SIFA_BCR_count=size/32 + ((size & 0x1F)>0);
DMAch_SIFA_CHCR=DMAf_CO|DMAf_TR|
(attr & SIF_DMA_BSN?DMAf_30:0);
DMAch_SIFA_CHCR;
}
///////////////////////////////////////////////////////////////////////[16]
void SifSendSync1(){
while (DMAch_SIFA_CHCR & DMAf_TR);
}
///////////////////////////////////////////////////////////////////////[17]
int SifIsSending1(){
return (DMAch_SIFA_CHCR & DMAf_TR);
}
///////////////////////////////////////////////////////////////////////[18]
void SifSetSIF2DMA(void *data, int size, int attr){
size=size/4 + ((size & 3)>0);
if (BD4 & 0x80 == 0) BD4=0x80;
DMAch_SIF2_CHCR=0;
DMAch_SIF2_MADR=(u32)data & 0xFFFFFF;
DMAch_SIF2_BCR_size=min(size, 32);
DMAch_SIF2_BCR_count=size/32 + ((size & 0x1F)>0);
DMAch_SIF2_CHCR=DMAf_CO |DMAf_TR|
((attr & SIF_TO_EE ?DMAf_DR:
(attr & SIF_DMA_BSN?DMAf_30:0)));
DMAch_SIF2_CHCR;
}
///////////////////////////////////////////////////////////////////////[19]
void SifSendSync2(){
while (DMAch_SIF2_CHCR & DMAf_TR);
}
///////////////////////////////////////////////////////////////////////[20]
int SifIsSending2(){
return (DMAch_SIF2_CHCR & DMAf_TR);
}
///////////////////////////////////////////////////////////////////////[21]
int SifGetEEIOPflags(){
return getBD2_loopchanging();
}
///////////////////////////////////////////////////////////////////////[22]
int SifSetEEIOPflags(int val){
BD2=val;
return getBD2_loopchanging();
}
///////////////////////////////////////////////////////////////////////[23]
int SifGetIOPEEflags(){
return getBD3_loopchanging();
}
///////////////////////////////////////////////////////////////////////[24]
int SifSetIOPEEflags(int val){
BD3=val;
return getBD3_loopchanging();
}
///////////////////////////////////////////////////////////////////////[25]
int SifGetEErcvaddr(){
return BD0;
}
///////////////////////////////////////////////////////////////////////[26]
int SifGetIOPrcvaddr(){
return BD1;
}
///////////////////////////////////////////////////////////////////////[27]
int SifSetIOPrcvaddr(int val){
BD1=val;
return BD1;
}
///////////////////////////////////////////////////////////////////////[28]
void SifSet1450_2(){
CONFIG_1450 |= 2;
CONFIG_1450 &= ~2;
CONFIG_1450;
}
///////////////////////////////////////////////////////////////////////[01,03,32,33,34,35]
void _retonly(){}
//////////////////////////////entrypoint///////////////////////////////
struct export sifman_stub={
0x41C00000,
0,
VER(1, 1), // 1.1 => 0x101
0,
"sifman",
(func)_start, // entrypoint
(func)_retonly,
(func)SifDeinit,
(func)_retonly,
(func)SifSIF2Init,
(func)SifInit,
(func)SifSetDChain,
(func)SifSetDma,
(func)SifDmaStat,
(func)SifSend,
(func)SifSendSync,
(func)SifIsSending,
(func)SifSetSIF0DMA,
(func)SifSendSync0,
(func)SifIsSending0,
(func)SifSetSIF1DMA,
(func)SifSendSync1,
(func)SifIsSending1,
(func)SifSetSIF2DMA,
(func)SifSendSync2,
(func)SifIsSending2,
(func)SifGetEEIOPflags,
(func)SifSetEEIOPflags,
(func)SifGetIOPEEflags,
(func)SifSetIOPEEflags,
(func)SifGetEErcvaddr,
(func)SifGetIOPrcvaddr,
(func)SifSetIOPrcvaddr,
(func)SifSet1450_2,
(func)SifCheckInit,
(func)SifSet0CB,
(func)SifReset0CB,
(func)_retonly,
(func)_retonly,
(func)_retonly,
(func)_retonly,
0
};
//////////////////////////////entrypoint///////////////////////////////[00]
int _start(int argc, char* argv){
return RegisterLibraryEntries(&sifman_stub) > 0;
}