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https://github.com/yellows8/dsi.git
synced 2025-06-18 19:25:42 -04:00
315 lines
10 KiB
C
315 lines
10 KiB
C
#include <nds.h>
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#include "sdmmc.h"
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static struct mmcdevice deviceSD;
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/*mmcdevice *getMMCDevice(int drive) {
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if(drive==0) return &deviceNAND;
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return &deviceSD;
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}
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*/
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//---------------------------------------------------------------------------------
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int __attribute__((noinline)) geterror(struct mmcdevice *ctx) {
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//---------------------------------------------------------------------------------
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//if(ctx->error == 0x4) return -1;
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//else return 0;
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return (ctx->error << 29) >> 31;
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}
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//---------------------------------------------------------------------------------
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void __attribute__((noinline)) setTarget(struct mmcdevice *ctx) {
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//---------------------------------------------------------------------------------
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sdmmc_mask16(REG_SDPORTSEL,0x3,(u16)ctx->devicenumber);
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setckl(ctx->clk);
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if (ctx->SDOPT == 0) {
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sdmmc_mask16(REG_SDOPT, 0, 0x8000);
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} else {
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sdmmc_mask16(REG_SDOPT, 0x8000, 0);
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}
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}
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//---------------------------------------------------------------------------------
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void __attribute__((noinline)) sdmmc_send_command(struct mmcdevice *ctx, u32 cmd, u32 args) {
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//---------------------------------------------------------------------------------
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int i;
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bool getSDRESP = (cmd << 15) >> 31;
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u16 flags = (cmd << 15) >> 31;
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const bool readdata = cmd & 0x20000;
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const bool writedata = cmd & 0x40000;
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if (readdata || writedata)
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flags |= TMIO_STAT0_DATAEND;
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ctx->error = 0;
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while (sdmmc_read16(REG_SDSTATUS1) & TMIO_STAT1_CMD_BUSY); //mmc working?
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sdmmc_write16(REG_SDIRMASK0,0);
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sdmmc_write16(REG_SDIRMASK1,0);
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sdmmc_write16(REG_SDSTATUS0,0);
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sdmmc_write16(REG_SDSTATUS1,0);
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#ifdef DATA32_SUPPORT
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if (readdata)
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sdmmc_mask16(REG_SDDATACTL32, 0x1000, 0x800);
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if (writedata)
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sdmmc_mask16(REG_SDDATACTL32, 0x800, 0x1000);
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#else
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sdmmc_mask16(REG_SDDATACTL32,0x1800,0);
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#endif
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sdmmc_write16(REG_SDCMDARG0,args &0xFFFF);
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sdmmc_write16(REG_SDCMDARG1,args >> 16);
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sdmmc_write16(REG_SDCMD,cmd &0xFFFF);
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u32 size = ctx->size;
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u16 *dataPtr = (u16*)ctx->data;
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#ifdef DATA32_SUPPORT
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u32 *dataPtr32 = (u32*)ctx->data;
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#endif
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bool useBuf = ( 0 != dataPtr );
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#ifdef DATA32_SUPPORT
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bool useBuf32 = (useBuf && (0 == (3 & ((u32)dataPtr))));
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#endif
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u16 status0 = 0;
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while(true) {
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u16 status1 = sdmmc_read16(REG_SDSTATUS1);
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if (status1 & TMIO_STAT1_RXRDY) {
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if (readdata && useBuf) {
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sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_RXRDY, 0);
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//sdmmc_write16(REG_SDSTATUS1,~TMIO_STAT1_RXRDY);
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if (size > 0x1FF) {
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#ifdef DATA32_SUPPORT
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if (useBuf32) {
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for(i = 0; i<0x200; i+=4)
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*dataPtr32++ = sdmmc_read32(REG_SDFIFO32);
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} else {
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#endif
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for(i = 0; i<0x200; i+=2)
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*dataPtr++ = sdmmc_read16(REG_SDFIFO);
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#ifdef DATA32_SUPPORT
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}
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#endif
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size -= 0x200;
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}
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}
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}
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if (status1 & TMIO_STAT1_TXRQ) {
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if (writedata && useBuf) {
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sdmmc_mask16(REG_SDSTATUS1, TMIO_STAT1_TXRQ, 0);
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//sdmmc_write16(REG_SDSTATUS1,~TMIO_STAT1_TXRQ);
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if (size > 0x1FF) {
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#ifdef DATA32_SUPPORT
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for (i = 0; i<0x200; i+=4)
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sdmmc_write32(REG_SDFIFO32,*dataPtr32++);
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#else
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for (i = 0; i<0x200; i+=2)
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sdmmc_write16(REG_SDFIFO,*dataPtr++);
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#endif
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size -= 0x200;
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}
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}
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}
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if (status1 & TMIO_MASK_GW) {
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ctx->error |= 4;
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break;
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}
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if (!(status1 & TMIO_STAT1_CMD_BUSY)) {
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status0 = sdmmc_read16(REG_SDSTATUS0);
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if (sdmmc_read16(REG_SDSTATUS0) & TMIO_STAT0_CMDRESPEND)
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ctx->error |= 0x1;
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if (status0 & TMIO_STAT0_DATAEND)
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ctx->error |= 0x2;
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if ((status0 & flags) == flags)
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break;
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}
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}
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ctx->stat0 = sdmmc_read16(REG_SDSTATUS0);
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ctx->stat1 = sdmmc_read16(REG_SDSTATUS1);
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sdmmc_write16(REG_SDSTATUS0,0);
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sdmmc_write16(REG_SDSTATUS1,0);
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if (getSDRESP != 0) {
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ctx->ret[0] = sdmmc_read16(REG_SDRESP0) | (sdmmc_read16(REG_SDRESP1) << 16);
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ctx->ret[1] = sdmmc_read16(REG_SDRESP2) | (sdmmc_read16(REG_SDRESP3) << 16);
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ctx->ret[2] = sdmmc_read16(REG_SDRESP4) | (sdmmc_read16(REG_SDRESP5) << 16);
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ctx->ret[3] = sdmmc_read16(REG_SDRESP6) | (sdmmc_read16(REG_SDRESP7) << 16);
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}
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}
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//---------------------------------------------------------------------------------
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int sdmmc_cardinserted() {
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//---------------------------------------------------------------------------------
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return 1; //sdmmc_cardready;
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}
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//---------------------------------------------------------------------------------
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void sdmmc_controller_init() {
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//---------------------------------------------------------------------------------
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deviceSD.isSDHC = 0;
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deviceSD.SDOPT = 0;
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deviceSD.res = 0;
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deviceSD.initarg = 0;
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deviceSD.clk = 0x80;
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deviceSD.devicenumber = 0;
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*(vu16*)(SDMMC_BASE + REG_SDDATACTL32) &= 0xF7FFu;
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*(vu16*)(SDMMC_BASE + REG_SDDATACTL32) &= 0xEFFFu;
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*(vu16*)(SDMMC_BASE + REG_SDDATACTL32) |= 0x402u;
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*(vu16*)(SDMMC_BASE + REG_SDDATACTL) = (*(vu16*)(SDMMC_BASE + 0xd8) & 0xFFDD) | 2;
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#ifdef DATA32_SUPPORT
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*(vu16*)(SDMMC_BASE + REG_SDDATACTL32) &= 0xFFFFu;
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*(vu16*)(SDMMC_BASE + REG_SDDATACTL) &= 0xFFDFu;
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*(vu16*)(SDMMC_BASE + REG_SDBLKLEN32) = 512;
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#else
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*(vu16*)(SDMMC_BASE + REG_SDDATACTL32) &= 0xFFFDu;
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*(vu16*)(SDMMC_BASE + REG_SDDATACTL) &= 0xFFDDu;
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*(vu16*)(SDMMC_BASE + REG_SDBLKLEN32) = 0;
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#endif
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*(vu16*)(SDMMC_BASE + REG_SDBLKCOUNT32) = 1; //SDBLKCOUNT32
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*(vu16*)(SDMMC_BASE + REG_SDRESET) &= 0xFFFEu; //SDRESET
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*(vu16*)(SDMMC_BASE + REG_SDRESET) |= 1u; //SDRESET
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*(vu16*)(SDMMC_BASE + REG_SDIRMASK0) |= TMIO_MASK_ALL;
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*(vu16*)(SDMMC_BASE + REG_SDIRMASK1) |= TMIO_MASK_ALL>>16;
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*(vu16*)(SDMMC_BASE + 0x0fc) |= 0xDBu; //SDCTL_RESERVED7
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*(vu16*)(SDMMC_BASE + 0x0fe) |= 0xDBu; //SDCTL_RESERVED8
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*(vu16*)(SDMMC_BASE + REG_SDPORTSEL) &= 0xFFFCu; //SDPORTSEL
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#ifdef DATA32_SUPPORT
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*(vu16*)(SDMMC_BASE + REG_SDCLKCTL) = 0x20;
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*(vu16*)(SDMMC_BASE + REG_SDOPT) = 0x40EE;
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#else
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*(vu16*)(SDMMC_BASE + REG_SDCLKCTL) = 0x40; //Nintendo sets this to 0x20
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*(vu16*)(SDMMC_BASE + REG_SDOPT) = 0x40EB; //Nintendo sets this to 0x40EE
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#endif
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*(vu16*)(SDMMC_BASE + REG_SDPORTSEL) &= 0xFFFCu; ////SDPORTSEL
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*(vu16*)(SDMMC_BASE + REG_SDBLKLEN) = 512; //SDBLKLEN
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*(vu16*)(SDMMC_BASE + REG_SDSTOP) = 0; //SDSTOP
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setTarget(&deviceSD);
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}
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//---------------------------------------------------------------------------------
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static u32 calcSDSize(u8* csd, int type) {
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//---------------------------------------------------------------------------------
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u32 result = 0;
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if (type == -1) type = csd[14] >> 6;
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switch (type) {
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case 0:
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{
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u32 block_len = csd[9] & 0xf;
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block_len = 1 << block_len;
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u32 mult = (csd[4] >> 7) | ((csd[5] & 3) << 1);
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mult = 1 << (mult + 2);
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result = csd[8] & 3;
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result = (result << 8) | csd[7];
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result = (result << 2) | (csd[6] >> 6);
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result = (result + 1) * mult * block_len / 512;
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}
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break;
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case 1:
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result = csd[7] & 0x3f;
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result = (result << 8) | csd[6];
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result = (result << 8) | csd[5];
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result = (result + 1) * 1024;
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break;
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}
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return result;
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}
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//---------------------------------------------------------------------------------
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int sdmmc_sdcard_init() {
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//---------------------------------------------------------------------------------
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setTarget(&deviceSD);
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swiDelay(0xF000);
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sdmmc_send_command(&deviceSD,0,0);
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sdmmc_send_command(&deviceSD,0x10408,0x1AA);
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//u32 temp = (deviceSD.ret[0] == 0x1AA) << 0x1E;
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u32 temp = (deviceSD.error & 0x1) << 0x1E;
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//int count = 0;
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u32 temp2 = 0;
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do {
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do {
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sdmmc_send_command(&deviceSD,0x10437,deviceSD.initarg << 0x10);
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sdmmc_send_command(&deviceSD,0x10769,0x00FF8000 | temp);
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temp2 = 1;
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} while ( !(deviceSD.error & 1) );
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} while((deviceSD.ret[0] & 0x80000000) == 0);
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//do
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//{
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// sdmmc_send_command(&deviceSD,0x10437,deviceSD.initarg << 0x10);
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// sdmmc_send_command(&deviceSD,0x10769,0x00FF8000 | temp);
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//
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//}
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//while(!(deviceSD.ret[0] & 0x80000000));
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if(!((deviceSD.ret[0] >> 30) & 1) || !temp)
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temp2 = 0;
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deviceSD.isSDHC = temp2;
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//deviceSD.isSDHC = (deviceSD.ret[0] & 0x40000000);
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sdmmc_send_command(&deviceSD,0x10602,0);
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if (deviceSD.error & 0x4) return -1;
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sdmmc_send_command(&deviceSD,0x10403,0);
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if (deviceSD.error & 0x4) return -1;
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deviceSD.initarg = deviceSD.ret[0] >> 0x10;
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sdmmc_send_command(&deviceSD,0x10609,deviceSD.initarg << 0x10);
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if (deviceSD.error & 0x4) return -1;
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deviceSD.total_size = calcSDSize((u8*)&deviceSD.ret[0],-1);
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deviceSD.clk = 1;
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setckl(1);
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sdmmc_send_command(&deviceSD,0x10507,deviceSD.initarg << 0x10);
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if (deviceSD.error & 0x4) return -1;
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sdmmc_send_command(&deviceSD,0x10437,deviceSD.initarg << 0x10);
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if (deviceSD.error & 0x4) return -1;
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deviceSD.SDOPT = 1;
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sdmmc_send_command(&deviceSD,0x10446,0x2);
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if (deviceSD.error & 0x4) return -1;
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sdmmc_send_command(&deviceSD,0x1040D,deviceSD.initarg << 0x10);
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if (deviceSD.error & 0x4) return -1;
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sdmmc_send_command(&deviceSD,0x10410,0x200);
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if (deviceSD.error & 0x4) return -1;
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deviceSD.clk |= 0x200;
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return 0;
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}
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int __attribute__((noinline)) sdmmc_sdcard_readsectors(u32 sector_no, u32 numsectors, void *out) {
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if (deviceSD.isSDHC == 0)
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sector_no <<= 9;
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setTarget(&deviceSD);
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sdmmc_write16(REG_SDSTOP,0x100);
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#ifdef DATA32_SUPPORT
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sdmmc_write16(REG_SDBLKCOUNT32,numsectors);
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sdmmc_write16(REG_SDBLKLEN32,0x200);
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#endif
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sdmmc_write16(REG_SDBLKCOUNT,numsectors);
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deviceSD.data = out;
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deviceSD.size = numsectors << 9;
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sdmmc_send_command(&deviceSD,0x33C12,sector_no);
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return geterror(&deviceSD);
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} |