mirror of
https://github.com/fail0verflow/mini.git
synced 2024-11-27 21:54:18 +01:00
450 lines
11 KiB
C
450 lines
11 KiB
C
/*
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mini - a Free Software replacement for the Nintendo/BroadOn IOS.
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SD/MMC interface
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Copyright (C) 2008, 2009 Sven Peter <svenpeter@gmail.com>
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# This code is licensed to you under the terms of the GNU GPL, version 2;
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# see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
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*/
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#include "bsdtypes.h"
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#include "sdhc.h"
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#include "gecko.h"
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#include "string.h"
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#include "utils.h"
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#include "memory.h"
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//#define SDMMC_DEBUG
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#ifdef SDMMC_DEBUG
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static int sdmmcdebug = 0;
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#define DPRINTF(n,s) do { if ((n) <= sdmmcdebug) gecko_printf s; } while (0)
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#else
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#define DPRINTF(n,s) do {} while(0)
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#endif
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struct sdmmc_card {
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sdmmc_chipset_handle_t handle;
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int inserted;
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int sdhc_blockmode;
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int selected;
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int new_card; // set to 1 everytime a new card is inserted
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u32 timeout;
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u32 num_sectors;
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u32 cid;
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u16 rca;
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};
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#ifdef LOADER
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static struct sdmmc_card card;
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#else
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static struct sdmmc_card card MEM2_BSS;
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#endif
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void sdmmc_attach(sdmmc_chipset_handle_t handle)
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{
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memset(&card, 0, sizeof(card));
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card.handle = handle;
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DPRINTF(0, ("sdmmc: attached new SD/MMC card\n"));
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sdhc_host_reset(card.handle);
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if (sdhc_card_detect(card.handle)) {
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DPRINTF(1, ("card is inserted. starting init sequence.\n"));
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sdmmc_needs_discover();
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}
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}
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void sdmmc_abort(void) {
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struct sdmmc_command cmd;
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gecko_printf("abortion kthx\n");
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = MMC_STOP_TRANSMISSION;
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cmd.c_arg = 0;
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cmd.c_flags = SCF_RSP_R1B;
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sdhc_exec_command(card.handle, &cmd);
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}
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void sdmmc_needs_discover(void)
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{
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struct sdmmc_command cmd;
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u32 ocr;
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DPRINTF(0, ("sdmmc: card needs discovery.\n"));
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sdhc_host_reset(card.handle);
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card.new_card = 1;
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if (!sdhc_card_detect(card.handle)) {
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DPRINTF(1, ("sdmmc: card (no longer?) inserted.\n"));
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card.inserted = 0;
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return;
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}
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DPRINTF(1, ("sdmmc: enabling power\n"));
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if (sdhc_bus_power(card.handle, 1) != 0) {
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gecko_printf("sdmmc: powerup failed for card\n");
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goto out;
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}
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DPRINTF(1, ("sdmmc: enabling clock\n"));
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if (sdhc_bus_clock(card.handle, SDMMC_DEFAULT_CLOCK) != 0) {
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gecko_printf("sdmmc: could not enable clock for card\n");
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goto out_power;
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}
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DPRINTF(1, ("sdmmc: sending GO_IDLE_STATE\n"));
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = MMC_GO_IDLE_STATE;
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cmd.c_flags = SCF_RSP_R0;
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sdhc_exec_command(card.handle, &cmd);
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if (cmd.c_error) {
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gecko_printf("sdmmc: GO_IDLE_STATE failed with %d\n", cmd.c_error);
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goto out_clock;
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}
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DPRINTF(2, ("sdmmc: GO_IDLE_STATE response: %x\n", MMC_R1(cmd.c_resp)));
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DPRINTF(1, ("sdmmc: sending SEND_IF_COND\n"));
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = SD_SEND_IF_COND;
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cmd.c_arg = 0x1aa;
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cmd.c_flags = SCF_RSP_R7;
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cmd.c_timeout = 100;
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sdhc_exec_command(card.handle, &cmd);
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ocr = card.handle->ocr;
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if (cmd.c_error || (cmd.c_resp[0] & 0xff) != 0xaa)
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ocr &= ~SD_OCR_SDHC_CAP;
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else
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ocr |= SD_OCR_SDHC_CAP;
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DPRINTF(2, ("sdmmc: SEND_IF_COND ocr: %x\n", ocr));
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int tries;
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for (tries = 100; tries > 0; tries--) {
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udelay(100000);
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = MMC_APP_CMD;
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cmd.c_arg = 0;
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cmd.c_flags = SCF_RSP_R1;
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sdhc_exec_command(card.handle, &cmd);
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if (cmd.c_error)
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continue;
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = SD_APP_OP_COND;
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cmd.c_arg = ocr;
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cmd.c_flags = SCF_RSP_R3;
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sdhc_exec_command(card.handle, &cmd);
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if (cmd.c_error)
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continue;
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DPRINTF(3, ("sdmmc: response for SEND_IF_COND: %08x\n",
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MMC_R1(cmd.c_resp)));
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if (ISSET(MMC_R1(cmd.c_resp), MMC_OCR_MEM_READY))
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break;
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}
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if (!ISSET(cmd.c_resp[0], MMC_OCR_MEM_READY)) {
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gecko_printf("sdmmc: card failed to powerup.\n");
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goto out_power;
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}
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if (ISSET(MMC_R1(cmd.c_resp), SD_OCR_SDHC_CAP))
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card.sdhc_blockmode = 1;
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else
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card.sdhc_blockmode = 0;
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DPRINTF(2, ("sdmmc: SDHC: %d\n", card.sdhc_blockmode));
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u8 *resp;
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DPRINTF(2, ("sdmmc: MMC_ALL_SEND_CID\n"));
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = MMC_ALL_SEND_CID;
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cmd.c_arg = 0;
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cmd.c_flags = SCF_RSP_R2;
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sdhc_exec_command(card.handle, &cmd);
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if (cmd.c_error) {
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gecko_printf("sdmmc: MMC_ALL_SEND_CID failed with %d\n", cmd.c_error);
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goto out_clock;
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}
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card.cid = MMC_R1(cmd.c_resp);
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resp = (u8 *)cmd.c_resp;
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gecko_printf("CID: mid=%02x name='%c%c%c%c%c%c%c' prv=%d.%d psn=%02x%02x%02x%02x mdt=%d/%d\n", resp[14],
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resp[13],resp[12],resp[11],resp[10],resp[9],resp[8],resp[7], resp[6], resp[5] >> 4, resp[5] & 0xf,
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resp[4], resp[3], resp[2], resp[0] & 0xf, 2000 + (resp[0] >> 4));
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DPRINTF(2, ("sdmmc: SD_SEND_RELATIVE_ADDRESS\n"));
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = SD_SEND_RELATIVE_ADDR;
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cmd.c_arg = 0;
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cmd.c_flags = SCF_RSP_R6;
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sdhc_exec_command(card.handle, &cmd);
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if (cmd.c_error) {
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gecko_printf("sdmmc: SD_SEND_RCA failed with %d\n", cmd.c_error);
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goto out_clock;
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}
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card.rca = MMC_R1(cmd.c_resp)>>16;
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DPRINTF(2, ("sdmmc: rca: %08x\n", card.rca));
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card.selected = 0;
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card.inserted = 1;
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = MMC_SEND_CSD;
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cmd.c_arg = ((u32)card.rca)<<16;
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cmd.c_flags = SCF_RSP_R2;
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sdhc_exec_command(card.handle, &cmd);
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if (cmd.c_error) {
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gecko_printf("sdmmc: MMC_SEND_CSD failed with %d\n", cmd.c_error);
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goto out_power;
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}
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resp = (u8 *)cmd.c_resp;
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int i;
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gecko_printf("csd: ");
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for(i=15; i>=0; i--) gecko_printf("%02x ", (u32) resp[i]);
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gecko_printf("\n");
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if (resp[13] == 0xe) { // sdhc
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unsigned int c_size = resp[7] << 16 | resp[6] << 8 | resp[5];
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gecko_printf("sdmmc: sdhc mode, c_size=%u, card size = %uk\n", c_size, (c_size + 1)* 512);
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card.timeout = 250 * 1000000; // spec says read timeout is 100ms and write/erase timeout is 250ms
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card.num_sectors = (c_size + 1) * 1024; // number of 512-byte sectors
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}
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else {
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unsigned int taac, nsac, read_bl_len, c_size, c_size_mult;
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taac = resp[13];
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nsac = resp[12];
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read_bl_len = resp[9] & 0xF;
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c_size = (resp[8] & 3) << 10;
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c_size |= (resp[7] << 2);
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c_size |= (resp[6] >> 6);
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c_size_mult = (resp[5] & 3) << 1;
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c_size_mult |= resp[4] >> 7;
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gecko_printf("taac=%u nsac=%u read_bl_len=%u c_size=%u c_size_mult=%u card size=%u bytes\n",
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taac, nsac, read_bl_len, c_size, c_size_mult, (c_size + 1) * (4 << c_size_mult) * (1 << read_bl_len));
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static const unsigned int time_unit[] = {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000};
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static const unsigned int time_value[] = {1, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80}; // must div by 10
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card.timeout = time_unit[taac & 7] * time_value[(taac >> 3) & 0xf] / 10;
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gecko_printf("calculated timeout = %uns\n", card.timeout);
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card.num_sectors = (c_size + 1) * (4 << c_size_mult) * (1 << read_bl_len) / 512;
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}
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sdmmc_select();
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DPRINTF(2, ("sdmmc: MMC_SET_BLOCKLEN\n"));
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = MMC_SET_BLOCKLEN;
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cmd.c_arg = SDMMC_DEFAULT_BLOCKLEN;
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cmd.c_flags = SCF_RSP_R1;
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sdhc_exec_command(card.handle, &cmd);
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if (cmd.c_error) {
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gecko_printf("sdmmc: MMC_SET_BLOCKLEN failed with %d\n", cmd.c_error);
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card.inserted = card.selected = 0;
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goto out_clock;
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}
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return;
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out_clock:
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sdhc_bus_clock(card.handle, SDMMC_SDCLK_OFF);
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out_power:
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sdhc_bus_power(card.handle, 0);
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out:
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return;
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}
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int sdmmc_select(void)
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{
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struct sdmmc_command cmd;
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DPRINTF(2, ("sdmmc: MMC_SELECT_CARD\n"));
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = MMC_SELECT_CARD;
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cmd.c_arg = ((u32)card.rca)<<16;
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cmd.c_flags = SCF_RSP_R1B;
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sdhc_exec_command(card.handle, &cmd);
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gecko_printf("%s: resp=%x\n", __FUNCTION__, MMC_R1(cmd.c_resp));
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// sdhc_dump_regs(card.handle);
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// gecko_printf("present state = %x\n", HREAD4(hp, SDHC_PRESENT_STATE));
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if (cmd.c_error) {
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gecko_printf("sdmmc: MMC_SELECT card failed with %d.\n", cmd.c_error);
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return -1;
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}
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card.selected = 1;
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return 0;
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}
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int sdmmc_check_card(void)
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{
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if (card.inserted == 0)
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return SDMMC_NO_CARD;
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if (card.new_card == 1)
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return SDMMC_NEW_CARD;
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return SDMMC_INSERTED;
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}
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int sdmmc_ack_card(void)
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{
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if (card.new_card == 1) {
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card.new_card = 0;
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return 0;
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}
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return -1;
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}
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int sdmmc_read(u32 blk_start, u32 blk_count, void *data)
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{
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struct sdmmc_command cmd;
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// gecko_printf("%s(%u, %u, %p)\n", __FUNCTION__, blk_start, blk_count, data);
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if (card.inserted == 0) {
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gecko_printf("sdmmc: READ: no card inserted.\n");
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return -1;
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}
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if (card.selected == 0) {
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if (sdmmc_select() < 0) {
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gecko_printf("sdmmc: READ: cannot select card.\n");
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return -1;
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}
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}
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if (card.new_card == 1) {
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gecko_printf("sdmmc: new card inserted but not acknowledged yet.\n");
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return -1;
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}
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DPRINTF(2, ("sdmmc: MMC_READ_BLOCK_MULTIPLE\n"));
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = MMC_READ_BLOCK_MULTIPLE;
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if (card.sdhc_blockmode)
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cmd.c_arg = blk_start;
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else
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cmd.c_arg = blk_start * SDMMC_DEFAULT_BLOCKLEN;
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cmd.c_data = data;
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cmd.c_datalen = blk_count * SDMMC_DEFAULT_BLOCKLEN;
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cmd.c_blklen = SDMMC_DEFAULT_BLOCKLEN;
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cmd.c_flags = SCF_RSP_R1 | SCF_CMD_READ;
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sdhc_exec_command(card.handle, &cmd);
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if (cmd.c_error) {
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gecko_printf("sdmmc: MMC_READ_BLOCK_MULTIPLE failed with %d\n", cmd.c_error);
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return -1;
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}
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DPRINTF(2, ("sdmmc: MMC_READ_BLOCK_MULTIPLE done\n"));
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return 0;
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}
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#ifndef LOADER
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int sdmmc_write(u32 blk_start, u32 blk_count, void *data)
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{
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struct sdmmc_command cmd;
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if (card.inserted == 0) {
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gecko_printf("sdmmc: READ: no card inserted.\n");
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return -1;
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}
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if (card.selected == 0) {
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if (sdmmc_select() < 0) {
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gecko_printf("sdmmc: READ: cannot select card.\n");
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return -1;
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}
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}
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if (card.new_card == 1) {
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gecko_printf("sdmmc: new card inserted but not acknowledged yet.\n");
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return -1;
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}
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DPRINTF(2, ("sdmmc: MMC_WRITE_BLOCK_MULTIPLE\n"));
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memset(&cmd, 0, sizeof(cmd));
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cmd.c_opcode = MMC_WRITE_BLOCK_MULTIPLE;
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if (card.sdhc_blockmode)
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cmd.c_arg = blk_start;
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else
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cmd.c_arg = blk_start * SDMMC_DEFAULT_BLOCKLEN;
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cmd.c_data = data;
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cmd.c_datalen = blk_count * SDMMC_DEFAULT_BLOCKLEN;
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cmd.c_blklen = SDMMC_DEFAULT_BLOCKLEN;
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cmd.c_flags = SCF_RSP_R1;
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sdhc_exec_command(card.handle, &cmd);
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if (cmd.c_error) {
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gecko_printf("sdmmc: MMC_READ_BLOCK_MULTIPLE failed with %d\n", cmd.c_error);
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return -1;
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}
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DPRINTF(2, ("sdmmc: MMC_WRITE_BLOCK_MULTIPLE done\n"));
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return 0;
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}
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int sdmmc_get_sectors(void)
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{
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if (card.inserted == 0) {
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gecko_printf("sdmmc: READ: no card inserted.\n");
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return -1;
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}
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if (card.new_card == 1) {
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gecko_printf("sdmmc: new card inserted but not acknowledged yet.\n");
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return -1;
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}
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// sdhc_error(sdhci->reg_base, "num sectors = %u", sdhci->num_sectors);
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return card.num_sectors;
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}
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#endif
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#ifdef CAN_HAZ_IPC
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void sdmmc_ipc(volatile ipc_request *req)
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{
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int ret;
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switch (req->req) {
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case IPC_SDMMC_ACK:
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ret = sdmmc_ack_card();
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ipc_post(req->code, req->tag, 1, ret);
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break;
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case IPC_SDMMC_READ:
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ret = sdmmc_read(req->args[0], req->args[1], (void *)req->args[2]);
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dc_flushrange((void *)req->args[2],
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req->args[1]*SDMMC_DEFAULT_BLOCKLEN);
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ipc_post(req->code, req->tag, 1, ret);
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break;
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case IPC_SDMMC_WRITE:
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dc_invalidaterange((void *)req->args[2],
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req->args[1]*SDMMC_DEFAULT_BLOCKLEN);
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ret = sdmmc_write(req->args[0], req->args[1], (void *)req->args[2]);
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ipc_post(req->code, req->tag, 1, ret);
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break;
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case IPC_SDMMC_STATE:
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ipc_post(req->code, req->tag, 1,
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sdmmc_check_card());
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break;
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case IPC_SDMMC_SIZE:
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ipc_post(req->code, req->tag, 1,
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sdmmc_get_sectors());
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break;
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}
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}
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#endif
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