//---------------------------------------------------------------------------------
void sdmmcValueHandler(u32 value, void* user_data) {
//---------------------------------------------------------------------------------
int result;
switch(value) {
case SDMMC_HAVE_SD:
result = sdmmc_read16(REG_SDSTATUS0);
fifoSendValue32(FIFO_SDMMC, result);
break;
case SDMMC_SD_START:
if (sdmmc_read16(REG_SDSTATUS0) == 0) {
result = 1;
} else {
sdmmc_controller_init();
result = sdmmc_sdcard_init();
}
fifoSendValue32(FIFO_SDMMC, result);
break;
case SDMMC_SD_IS_INSERTED:
result = sdmmc_cardinserted();
fifoSendValue32(FIFO_SDMMC, result);
break;
case SDMMC_SD_STOP:
break;
}
}
//---------------------------------------------------------------------------------
void sdmmc_send_acmd41(u32 arg, u32 *resp) {
//---------------------------------------------------------------------------------
sdmmc_send_command(55, 0x0000, 0x000);
*resp = sdmmc_read16(REG_SDRESP0) | (sdmmc_read16(REG_SDRESP1)<<16);
sdmmc_send_command(41, (u16)arg, (arg>>16));
*resp = sdmmc_read16(REG_SDRESP0) | (sdmmc_read16(REG_SDRESP1)<<16);
}
//---------------------------------------------------------------------------------
int sdmmc_send_command(u16 cmd, u16 arg0, u16 arg1) {
//---------------------------------------------------------------------------------
u16 is_stat0, was_stat0;
u16 is_stat1, was_stat1;
sdmmc_write16(REG_SDCMDARG0, arg0);
sdmmc_write16(REG_SDCMDARG1, arg1);
was_stat1 = sdmmc_read16(REG_SDSTATUS1);
while(sdmmc_read16(REG_SDSTATUS1) & 0x4000);
is_stat1 = sdmmc_read16(REG_SDSTATUS1);
sdmmc_mask16(REG_SDSTATUS1, 0x807F, 0);
sdmmc_mask16(REG_SDSTATUS0, 0x0001, 0);
sdmmc_mask16(REG_SDSTATUS0, 0x0004, 0);
sdmmc_mask16(REG_SDSTATUS1, 0x100, 0);
sdmmc_mask16(REG_SDSTATUS1, 0x200, 0);
sdmmc_mask16(REG_SDSTOP, 1, 0);
sdmmc_mask16(0x22, 0x807F, 0);
sdmmc_mask16(0x20, 0x4, 0);
sdmmc_timeout = 0;
if(cmd==17 || cmd==18) {
if((sdmmc_read16(0x100) & 2)==0)sdmmc_mask16(0x22, 0x100, 0);
}
if(cmd==24 || cmd==25) {
if((sdmmc_read16(0x100) & 2)==0)sdmmc_mask16(0x22, 0x200, 0);
}
sdmmc_write16(REG_SDCMD, cmd);
if (cmd != 0) {
was_stat0 = sdmmc_read16(REG_SDSTATUS0);
if (cmd != 0x5016) {
while((sdmmc_read16(REG_SDSTATUS0) & 5) == 0) {
if(sdmmc_read16(REG_SDSTATUS1) & 0x40) {
sdmmc_mask16(REG_SDSTATUS1, 0x40, 0);
sdmmc_timeout = 1;
break;
}
}
}
is_stat0 = sdmmc_read16(REG_SDSTATUS0);
sdmmc_mask16(REG_SDSTATUS0, 5, 0);
}
if(cmd!=17 && cmd!=18 && cmd!=24 && cmd!=25)sdmmc_mask16(0x22, 0, 0x807F);
return 0;
}
static void __attribute__((noinline)) sdmmc_send_command(struct mmcdevice *ctx, u32 cmd, u32 args)
{
bool getSDRESP = (cmd << 15) >> 31;
u16 flags = (cmd << 15) >> 31;
const bool readdata = cmd & 0x20000;
const bool writedata = cmd & 0x40000;
if (readdata || writedata)
flags |= TMIO_STAT0_DATAEND;
ctx->error = 0;
while (sdmmc_read16(REG_SDSTATUS1) & TMIO_STAT1_CMD_BUSY); //mmc working?
sdmmc_write16(REG_SDIRMASK0,0);
sdmmc_write16(REG_SDIRMASK1,0);
sdmmc_write16(REG_SDSTATUS0,0);
sdmmc_write16(REG_SDSTATUS1,0);
sdmmc_mask16(REG_SDDATACTL32,0x1800,0);
sdmmc_write16(REG_SDCMDARG0,args &0xFFFF);
sdmmc_write16(REG_SDCMDARG1,args >> 16);
sdmmc_write16(REG_SDCMD,cmd &0xFFFF);
u32 size = ctx->size;
vu8 *dataPtr = ctx->data;
bool useBuf = ( NULL != dataPtr );
u16 status0 = 0;
while(true) {
u16 status1 = sdmmc_read16(REG_SDSTATUS1);
if (status1 & TMIO_STAT1_RXRDY) {
if (readdata && useBuf) {
sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_RXRDY, 0);
//sdmmc_write16(REG_SDSTATUS1,~TMIO_STAT1_RXRDY);
if (size > 0x1FF) {
for(int i = 0; i<0x200; i+=2) {
u16 data = sdmmc_read16(REG_SDFIFO);
*dataPtr++ = data & 0xFF;
*dataPtr++ = data >> 8;
}
size -= 0x200;
}
}
}
if (status1 & TMIO_STAT1_TXRQ) {
if (writedata && useBuf) {
sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_TXRQ, 0);
//sdmmc_write16(REG_SDSTATUS1,~TMIO_STAT1_TXRQ);
if (size > 0x1FF) {
for (int i = 0; i<0x200; i+=2) {
u16 data = *dataPtr++;
data |= *dataPtr++ << 8;
sdmmc_write16(REG_SDFIFO, data);
}
size -= 0x200;
}
}
}
if (status1 & TMIO_MASK_GW) {
ctx->error |= 4;
break;
}
if (!(status1 & TMIO_STAT1_CMD_BUSY)) {
status0 = sdmmc_read16(REG_SDSTATUS0);
if (sdmmc_read16(REG_SDSTATUS0) & TMIO_STAT0_CMDRESPEND)
ctx->error |= 0x1;
if (status0 & TMIO_STAT0_DATAEND)
ctx->error |= 0x2;
if ((status0 & flags) == flags)
break;
}
}
static inline void sdmmc_mask16(u16 reg, const u16 clear, const u16 set) {
u16 val = sdmmc_read16(reg);
val &= ~clear;
val |= set;
sdmmc_write16(reg, val);
}
ctx->error |= 4;
break;
}
if (!(status1 & TMIO_STAT1_CMD_BUSY)) {
status0 = sdmmc_read16(REG_SDSTATUS0);
if (sdmmc_read16(REG_SDSTATUS0) & TMIO_STAT0_CMDRESPEND)
ctx->error |= 0x1;
if (status0 & TMIO_STAT0_DATAEND)
ctx->error |= 0x2;
if ((status0 & flags) == flags)
break;
}
}
ctx->stat0 = sdmmc_read16(REG_SDSTATUS0);
ctx->stat1 = sdmmc_read16(REG_SDSTATUS1);
sdmmc_write16(REG_SDSTATUS0,0);
sdmmc_write16(REG_SDSTATUS1,0);
if (getSDRESP != 0) {
ctx->ret[0] = (u32)sdmmc_read16(REG_SDRESP0) | (u32)(sdmmc_read16(REG_SDRESP1) << 16);
ctx->ret[1] = (u32)sdmmc_read16(REG_SDRESP2) | (u32)(sdmmc_read16(REG_SDRESP3) << 16);
ctx->ret[2] = (u32)sdmmc_read16(REG_SDRESP4) | (u32)(sdmmc_read16(REG_SDRESP5) << 16);
ctx->ret[3] = (u32)sdmmc_read16(REG_SDRESP6) | (u32)(sdmmc_read16(REG_SDRESP7) << 16);
}
}
u32 __attribute__((noinline)) sdmmc_sdcard_readsectors(u32 sector_no, u32 numsectors, vu8 *out)
{
if (handleSD.isSDHC == 0)
void NO_INLINE sdmmc_send_command(struct mmcdevice *ctx, uint32_t cmd, uint32_t args)
{
bool getSDRESP = (cmd << 15) >> 31;
uint16_t flags = (cmd << 15) >> 31;
const bool readdata = cmd & 0x20000;
const bool writedata = cmd & 0x40000;
if(readdata || writedata)
{
flags |= TMIO_STAT0_DATAEND;
}
ctx->error = 0;
while(sdmmc_read16(REG_SDSTATUS1) & TMIO_STAT1_CMD_BUSY); //mmc working?
sdmmc_write16(REG_SDIRMASK0,0);
sdmmc_write16(REG_SDIRMASK1,0);
sdmmc_write16(REG_SDSTATUS0,0);
sdmmc_write16(REG_SDSTATUS1,0);
#ifdef DATA32_SUPPORT
if(readdata)sdmmc_mask16(REG_DATACTL32, 0x1000, 0x800);
if(writedata)sdmmc_mask16(REG_DATACTL32, 0x800, 0x1000);
#else
sdmmc_mask16(REG_DATACTL32,0x1800,0);
#endif
sdmmc_write16(REG_SDCMDARG0,args &0xFFFF);
sdmmc_write16(REG_SDCMDARG1,args >> 16);
sdmmc_write16(REG_SDCMD,cmd &0xFFFF);
uint32_t size = ctx->size;
uint16_t *dataPtr = (uint16_t*)ctx->data;
#ifdef DATA32_SUPPORT
uint32_t *dataPtr32 = (uint32_t*)ctx->data;
#endif
bool useBuf = ( NULL != dataPtr );
#ifdef DATA32_SUPPORT
bool useBuf32 = (useBuf && (0 == (3 & ((uint32_t)dataPtr))));
#endif
uint16_t status0 = 0;
while(1)
{
uint16_t status1 = sdmmc_read16(REG_SDSTATUS1);
if(status1 & TMIO_STAT1_RXRDY)
{
if(readdata)
{
if(useBuf)
{
sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_RXRDY, 0);
//sdmmc_write16(REG_SDSTATUS1,~TMIO_STAT1_RXRDY);
if(size > 0x1FF)
{
#ifdef DATA32_SUPPORT
if(useBuf32)
{
for(int i = 0; i<0x200; i+=4)
{
*dataPtr32++ = sdmmc_read32(REG_SDFIFO32);
}
}
else
{
#endif
for(int i = 0; i<0x200; i+=2)
{
*dataPtr++ = sdmmc_read16(REG_SDFIFO);
}
#ifdef DATA32_SUPPORT
}
#endif
size -= 0x200;
}
}
}
}
if(status1 & TMIO_STAT1_TXRQ)
{
if(writedata)
{
if(useBuf)
{
sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_TXRQ, 0);
//sdmmc_write16(REG_SDSTATUS1,~TMIO_STAT1_TXRQ);
if(size > 0x1FF)
{
#ifdef DATA32_SUPPORT
for(int i = 0; i<0x200; i+=4)
{
sdmmc_write32(REG_SDFIFO32,*dataPtr32++);
}
#else
for(int i = 0; i<0x200; i+=2)
{
sdmmc_write16(REG_SDFIFO,*dataPtr++);
}
#endif
size -= 0x200;
}
}
}
}
if(status1 & TMIO_MASK_GW)
{
ctx->error |= 4;
break;
}
if(!(status1 & TMIO_STAT1_CMD_BUSY))
{
status0 = sdmmc_read16(REG_SDSTATUS0);
if(sdmmc_read16(REG_SDSTATUS0) & TMIO_STAT0_CMDRESPEND)
{
ctx->error |= 0x1;
}
if(status0 & TMIO_STAT0_DATAEND)
{
ctx->error |= 0x2;
}
if((status0 & flags) == flags)
break;
}
}
ctx->stat0 = sdmmc_read16(REG_SDSTATUS0);
ctx->stat1 = sdmmc_read16(REG_SDSTATUS1);
sdmmc_write16(REG_SDSTATUS0,0);
sdmmc_write16(REG_SDSTATUS1,0);
if(getSDRESP != 0)
{
ctx->ret[0] = sdmmc_read16(REG_SDRESP0) | (sdmmc_read16(REG_SDRESP1) << 16);
ctx->ret[1] = sdmmc_read16(REG_SDRESP2) | (sdmmc_read16(REG_SDRESP3) << 16);
ctx->ret[2] = sdmmc_read16(REG_SDRESP4) | (sdmmc_read16(REG_SDRESP5) << 16);
ctx->ret[3] = sdmmc_read16(REG_SDRESP6) | (sdmmc_read16(REG_SDRESP7) << 16);
}
}
//---------------------------------------------------------------------------------
int sdmmc_sdcard_init() {
//---------------------------------------------------------------------------------
u16 sdaddr;
u32 resp0;
u32 resp1;
u32 resp2;
u32 resp3;
u32 resp4;
u32 resp5;
u32 resp6;
u32 resp7;
u32 ocr, ccs, hcs, response;
sdmmc_cardready = 0;
int oldIME = enterCriticalSection();
sdmmc_write16(REG_SDCLKCTL, 0x20);
sdmmc_write16(REG_SDOPT, 0x40EA); // XXX: document me!
sdmmc_write16(0x02, 0x400);
sdmmc_mask16(REG_SDCLKCTL, 0, 0x100);
sdmmc_write16(REG_SDCLKCTL, sdmmc_read16(REG_SDCLKCTL));
sdmmc_mask16(REG_SDCLKCTL, 0x100, 0);
sdmmc_mask16(REG_SDCLKCTL, 0, 0x200);
sdmmc_mask16(REG_SDCLKCTL, 0, 0x100);
// CMD0
sdmmc_send_command(0x0000, 0x0000, 0x0000);
sdmmc_send_command(0x0408, 0x01aa, 0x0000);
sdmmc_gotcmd8reply = 1;
if(sdmmc_timeout)
sdmmc_gotcmd8reply = 0;
if(sdmmc_gotcmd8reply)
hcs = (1<<30);
else
hcs = 0;
ocr = 0x00ff8000;
while (1) {
sdmmc_send_acmd41(ocr | hcs, &response);
if (response & 0x80000000)
break;
}
ccs = response & (1<<30);
if(ccs && hcs)
sdmmc_sdhc = 1;
else
sdmmc_sdhc = 0;
// CMD2 - get CID
sdmmc_send_command(2, 0, 0);
resp0 = sdmmc_read16(REG_SDRESP0);
resp1 = sdmmc_read16(REG_SDRESP1);
resp2 = sdmmc_read16(REG_SDRESP2);
resp3 = sdmmc_read16(REG_SDRESP3);
resp4 = sdmmc_read16(REG_SDRESP4);
resp5 = sdmmc_read16(REG_SDRESP5);
resp6 = sdmmc_read16(REG_SDRESP6);
resp7 = sdmmc_read16(REG_SDRESP7);
sdmmc_cid[0] = resp0 | (u32)(resp1<<16);
sdmmc_cid[1] = resp2 | (u32)(resp3<<16);
sdmmc_cid[2] = resp4 | (u32)(resp5<<16);
sdmmc_cid[3] = resp6 | (u32)(resp7<<16);
// CMD3
sdmmc_send_command(3, 0, 0);
resp0 = sdmmc_read16(REG_SDRESP0);
resp1 = sdmmc_read16(REG_SDRESP1);
sdaddr = resp1;
// CMD9 - get CSD
sdmmc_send_command(9, 0, sdaddr);
resp0 = sdmmc_read16(REG_SDRESP0);
resp1 = sdmmc_read16(REG_SDRESP1);
resp2 = sdmmc_read16(REG_SDRESP2);
resp3 = sdmmc_read16(REG_SDRESP3);
resp4 = sdmmc_read16(REG_SDRESP4);
resp5 = sdmmc_read16(REG_SDRESP5);
resp6 = sdmmc_read16(REG_SDRESP6);
resp7 = sdmmc_read16(REG_SDRESP7);
sdmmc_write16(REG_SDCLKCTL, 0x100);
// CMD7
sdmmc_send_command(7, 0, sdaddr);
resp0 = sdmmc_read16(REG_SDRESP0);
resp1 = sdmmc_read16(REG_SDRESP1);
// CMD55
sdmmc_send_command(55, 0, sdaddr);
// ACMD6
sdmmc_send_command(6, 2, 0);
resp0 = sdmmc_read16(REG_SDRESP0);
resp1 = sdmmc_read16(REG_SDRESP1);
sdmmc_send_command(13, 0, sdaddr);
resp0 = sdmmc_read16(REG_SDRESP0);
resp1 = sdmmc_read16(REG_SDRESP1);
sdmmc_send_command(16, 0x200, 0x0);
resp0 = sdmmc_read16(REG_SDRESP0);
resp1 = sdmmc_read16(REG_SDRESP1);
sdmmc_write16(REG_SDCLKCTL, sdmmc_read16(REG_SDCLKCTL));
sdmmc_write16(REG_SDBLKLEN, 0x200);
sdmmc_mask16(REG_SDCLKCTL, 0x100, 0);
sdmmc_cardready = 1;
leaveCriticalSection(oldIME);
return 0;
}
//---------------------------------------------------------------------------------
static void sdmmc_irqhandler() {
//---------------------------------------------------------------------------------
int i;
//u32 irqs;
u32 status;
u32 errstat;
if(sdmmcirq_transfer==0)return;
//irqs = sdmmc_read16(0x100);
status = sdmmc_read16(REG_SDSTATUS0);
errstat = sdmmc_read16(REG_SDSTATUS1) & 0x807f;//STATUS errors mask
if(errstat) {
sdmmc_mask16(REG_SDSTATUS1, errstat, 0);
//sdmmc_mask16(0x22, 0x0, errstat);
sdmmcirq_transfer = 0;
sdmmcirq_bufpos = 0;
sdmmcirq_abort = 1;
sdmmc_mask16(REG_SDCLKCTL, 0x100, 0);
fifoSendValue32(FIFO_SDMMC, 1);
return;
}
if(sdmmcirq_blocks==0) {
if(status & 0x4) {
sdmmcirq_transfer = 0;
sdmmcirq_bufpos = 0;
sdmmc_mask16(REG_SDSTATUS0, 0x4, 0);
sdmmc_mask16(0x22, 0, 0x807F | 0x4000);
sdmmc_mask16(0x20, 0, 0x4);
if((sdmmc_read16(0x22) & 0x100)==0)sdmmc_mask16(0x22, 0, 0x100);
if((sdmmc_read16(0x22) & 0x200)==0)sdmmc_mask16(0x22, 0, 0x200);
}
sdmmc_mask16(REG_SDCLKCTL, 0x100, 0);
fifoSendValue32(FIFO_SDMMC, 0);
return;
}
if(sdmmcirq_transfer==1) {
sdmmc_mask16(REG_SDSTATUS1, 0x100, 0);
//if((sdmmc_read16(0x22) & 0x100))sdmmc_mask16(0x22, 0x100, 0x0);
}
if(sdmmcirq_transfer==2) {
sdmmc_mask16(REG_SDSTATUS1, 0x200, 0);
//if((sdmmc_read16(0x22) & 0x200))sdmmc_mask16(0x22, 0x200, 0x0);
if(sdmmcirq_blocks==1)
{
sdmmc_mask16(0x100, 0x1800, 0x0);
sdmmc_mask16(0x22, 0x0, 0x100);
sdmmc_mask16(0x22, 0x0, 0x200);
}
}
for(i=0; i<0x100; i++) {
if(sdmmcirq_transfer==1)sdmmcirq_buffer[sdmmcirq_bufpos] = sdmmc_read16(REG_SDFIFO);
if(sdmmcirq_transfer==2)sdmmc_write16(REG_SDFIFO, sdmmcirq_buffer[sdmmcirq_bufpos]);
sdmmcirq_bufpos++;
}
sdmmcirq_blocks--;
}
