mini/sdmmc.c
2009-05-16 18:14:15 +02:00

605 lines
16 KiB
C

/*
mini - a Free Software replacement for the Nintendo/BroadOn IOS.
SD/MMC interface
Copyright (C) 2008, 2009 Sven Peter <svenpeter@gmail.com>
# This code is licensed to you under the terms of the GNU GPL, version 2;
# see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
*/
#include "bsdtypes.h"
#include "sdhcreg.h"
#include "sdhcvar.h"
#include "sdmmcchip.h"
#include "sdmmcreg.h"
#include "sdmmcvar.h"
#include "sdmmc.h"
#include "gecko.h"
#include "string.h"
#include "utils.h"
#include "memory.h"
//#define SDMMC_DEBUG
#ifdef SDMMC_DEBUG
static int sdmmcdebug = 0;
#define DPRINTF(n,s) do { if ((n) <= sdmmcdebug) gecko_printf s; } while (0)
#else
#define DPRINTF(n,s) do {} while(0)
#endif
struct sdmmc_card {
struct sdmmc_chip_functions *functions;
sdmmc_chipset_handle_t handle;
char name[30];
int no;
int inserted;
int sdhc_blockmode;
int selected;
int new_card; // set to 1 everytime a new card is inserted
u32 timeout;
u32 num_sectors;
u32 cid;
u16 rca;
};
#ifdef LOADER
static struct sdmmc_card cards[SDHC_MAX_HOSTS];
#else
static struct sdmmc_card cards[SDHC_MAX_HOSTS] MEM2_BSS;
#endif
static int n_cards = 0;
static inline int sdmmc_host_reset(struct sdmmc_card *card)
{
return sdmmc_chip_host_reset(card->functions, card->handle);
}
static inline int sdmmc_host_card_detect(struct sdmmc_card *card)
{
return sdmmc_chip_card_detect(card->functions, card->handle);
#if 0
#define sdmmc_chip_host_maxblklen(tag, handle) \
((tag)->host_maxblklen((handle)))
#endif
}
static inline int sdmmc_host_ocr(struct sdmmc_card *card)
{
return sdmmc_chip_host_ocr(card->functions, card->handle);
}
static inline int sdmmc_host_power(struct sdmmc_card *card, int ocr)
{
return sdmmc_chip_bus_power(card->functions, card->handle, ocr);
}
static inline int sdmmc_host_clock(struct sdmmc_card *card, int freq)
{
return sdmmc_chip_bus_clock(card->functions, card->handle, freq);
}
static inline void sdmmc_host_exec_command(struct sdmmc_card *card, struct
sdmmc_command *cmd)
{
sdmmc_chip_exec_command(card->functions, card->handle, cmd);
}
static inline void sdmmc_host_set_bus_width(struct sdmmc_card *card, int
enable)
{
sdmmc_chip_set_bus_width(card->functions, card->handle, enable);
}
struct device *sdmmc_attach(struct sdmmc_chip_functions *functions,
sdmmc_chipset_handle_t handle, const char *name, int no)
{
struct sdmmc_card *c;
if (n_cards >= SDHC_MAX_HOSTS) {
gecko_printf("n_cards(%d) >= %d!\n", n_cards, SDHC_MAX_HOSTS);
gecko_printf("starlet is soo going to crash very soon...\n");
// HACK
return (struct device *)-1;
}
c = &cards[n_cards++];
memset(c, 0, sizeof(*c));
c->functions = functions;
c->handle = handle;
c->no = no;
strlcpy(c->name, name, sizeof(c->name));
DPRINTF(0, ("sdmmc: attached new SD/MMC card %d for host [%s:%d]\n",
n_cards-1, c->name, c->no));
sdmmc_host_reset(c);
if (sdmmc_host_card_detect(c)) {
DPRINTF(1, ("card is inserted. starting init sequence.\n"));
sdmmc_needs_discover((struct device *)(n_cards-1));
}
// HACK
return (struct device *)(n_cards-1);
}
void sdmmc_abort(void) {
struct sdmmc_command cmd;
gecko_printf("abortion kthx\n");
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_STOP_TRANSMISSION;
cmd.c_arg = 0;
cmd.c_flags = SCF_RSP_R1B;
sdmmc_host_exec_command(&cards[0], &cmd);
}
void sdmmc_needs_discover(struct device *dev)
{
int no = (int)dev;
struct sdmmc_card *c = &cards[no];
struct sdmmc_command cmd;
u32 ocr;
DPRINTF(0, ("sdmmc: card %d needs discovery.\n", no));
sdmmc_host_reset(c);
c->new_card = 1;
if (!sdmmc_host_card_detect(c)) {
DPRINTF(1, ("sdmmc: card %d (no longer?) inserted.\n", no));
c->inserted = 0;
return;
}
DPRINTF(1, ("sdmmc: enabling power for %d\n", no));
if (sdmmc_host_power(c, MMC_OCR_3_2V_3_3V|MMC_OCR_3_3V_3_4V) != 0) {
gecko_printf("sdmmc: powerup failed for card %d\n", no);
goto out;
}
DPRINTF(1, ("sdmmc: enabling clock for %d\n", no));
if (sdmmc_host_clock(c, SDMMC_DEFAULT_CLOCK) != 0) {
gecko_printf("sdmmc: could not enable clock for card %d\n", no);
goto out_power;
}
DPRINTF(1, ("sdmmc: sending GO_IDLE_STATE for %d\n", no));
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_GO_IDLE_STATE;
cmd.c_flags = SCF_RSP_R0;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: GO_IDLE_STATE failed with %d for card %d\n",
cmd.c_error, no);
goto out_clock;
}
DPRINTF(2, ("sdmmc: GO_IDLE_STATE response for %d: %x\n", no,
MMC_R1(cmd.c_resp)));
DPRINTF(1, ("sdmmc: sending SEND_IF_COND for %d\n", no));
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = SD_SEND_IF_COND;
cmd.c_arg = 0x1aa;
cmd.c_flags = SCF_RSP_R7;
sdmmc_host_exec_command(c, &cmd);
ocr = sdmmc_host_ocr(c);
if (cmd.c_error || (cmd.c_resp[0] & 0xff) != 0xaa)
ocr &= ~SD_OCR_SDHC_CAP;
else
ocr |= SD_OCR_SDHC_CAP;
DPRINTF(2, ("sdmmc: SEND_IF_COND ocr: %x\n", ocr));
int tries;
for (tries = 100; tries > 0; tries--) {
udelay(100000);
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_APP_CMD;
cmd.c_arg = 0;
cmd.c_flags = SCF_RSP_R1;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error)
continue;
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = SD_APP_OP_COND;
cmd.c_arg = ocr;
cmd.c_flags = SCF_RSP_R3;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error)
continue;
DPRINTF(3, ("sdmmc: response for SEND_IF_COND: %08x\n",
MMC_R1(cmd.c_resp)));
if (ISSET(MMC_R1(cmd.c_resp), MMC_OCR_MEM_READY))
break;
}
if (!ISSET(cmd.c_resp[0], MMC_OCR_MEM_READY)) {
gecko_printf("sdmmc: card %d failed to powerup.\n", no);
goto out_power;
}
if (ISSET(MMC_R1(cmd.c_resp), SD_OCR_SDHC_CAP))
c->sdhc_blockmode = 1;
else
c->sdhc_blockmode = 0;
DPRINTF(2, ("sdmmc: SDHC: %d\n", c->sdhc_blockmode));
u8 *resp;
DPRINTF(2, ("sdmmc: MMC_ALL_SEND_CID\n"));
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_ALL_SEND_CID;
cmd.c_arg = 0;
cmd.c_flags = SCF_RSP_R2;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: MMC_ALL_SEND_CID failed with %d for card %d\n",
cmd.c_error, no);
goto out_clock;
}
c->cid = MMC_R1(cmd.c_resp);
resp = (u8 *)cmd.c_resp;
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],
resp[13],resp[12],resp[11],resp[10],resp[9],resp[8],resp[7], resp[6], resp[5] >> 4, resp[5] & 0xf,
resp[4], resp[3], resp[2], resp[0] & 0xf, 2000 + (resp[0] >> 4));
DPRINTF(2, ("sdmmc: SD_SEND_RELATIVE_ADDRESS\n"));
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = SD_SEND_RELATIVE_ADDR;
cmd.c_arg = 0;
cmd.c_flags = SCF_RSP_R6;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: SD_SEND_RCA failed with %d for card %d\n",
cmd.c_error, no);
goto out_clock;
}
c->rca = MMC_R1(cmd.c_resp)>>16;
DPRINTF(2, ("sdmmc: rca: %08x\n", c->rca));
c->selected = 0;
c->inserted = 1;
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_SEND_CSD;
cmd.c_arg = ((u32)c->rca)<<16;
cmd.c_flags = SCF_RSP_R2;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: MMC_SEND_CSD failed for "
"card %d with %d\n", no, cmd.c_error);
goto out_power;
}
resp = (u8 *)cmd.c_resp;
int i;
gecko_printf("csd: ");
for(i=15; i>=0; i--) gecko_printf("%02x ", (u32) resp[i]);
gecko_printf("\n");
if (resp[13] == 0xe) { // sdhc
unsigned int c_size = resp[7] << 16 | resp[6] << 8 | resp[5];
gecko_printf("sdmmc: sdhc mode, c_size=%u, card size = %uk\n", c_size, (c_size + 1)* 512);
c->timeout = 250 * 1000000; // spec says read timeout is 100ms and write/erase timeout is 250ms
c->num_sectors = (c_size + 1) * 1024; // number of 512-byte sectors
}
else {
unsigned int taac, nsac, read_bl_len, c_size, c_size_mult;
taac = resp[13];
nsac = resp[12];
read_bl_len = resp[9] & 0xF;
c_size = (resp[8] & 3) << 10;
c_size |= (resp[7] << 2);
c_size |= (resp[6] >> 6);
c_size_mult = (resp[5] & 3) << 1;
c_size_mult |= resp[4] >> 7;
gecko_printf("taac=%u nsac=%u read_bl_len=%u c_size=%u c_size_mult=%u card size=%u bytes\n",
taac, nsac, read_bl_len, c_size, c_size_mult, (c_size + 1) * (4 << c_size_mult) * (1 << read_bl_len));
static const unsigned int time_unit[] = {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000};
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
c->timeout = time_unit[taac & 7] * time_value[(taac >> 3) & 0xf] / 10;
gecko_printf("calculated timeout = %uns\n", c->timeout);
c->num_sectors = (c_size + 1) * (4 << c_size_mult) * (1 << read_bl_len) / 512;
}
sdmmc_select(dev);
DPRINTF(2, ("sdmmc: MMC_SET_BLOCKLEN\n"));
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_SET_BLOCKLEN;
cmd.c_arg = SDMMC_DEFAULT_BLOCKLEN;
cmd.c_flags = SCF_RSP_R1;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: MMC_SET_BLOCKLEN failed with %d for card %d\n",
cmd.c_error, no);
c->inserted = c->selected = 0;
goto out_clock;
}
/* we can assume that every card supports a 4bit bus
* (see Simplified Physical Layer Spec, 5.6 SCR register (page 90),
* SD_BUS_WIDTHS)
*/
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_APP_CMD;
cmd.c_arg = ((u32)c->rca)<<16;
cmd.c_flags = SCF_RSP_R1;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: MMC_APP_CMD failed for "
"card %d with %d\n", no, cmd.c_error);
goto out_power;
}
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = SD_APP_SET_BUS_WIDTH;
cmd.c_arg = SD_ARG_BUS_WIDTH_4;
cmd.c_flags = SCF_RSP_R1;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: SD_APP_SET_BUS_WIDTH failed for "
"card %d with %d\n", no, cmd.c_error);
goto out_power;
}
sdmmc_host_set_bus_width(c, 1);
return;
out_clock:
out_power:
c->inserted = c->selected = 0;
sdmmc_host_power(c, 0);
sdmmc_host_reset(c);
out:
return;
#if 0
// struct sdmmc_task c_task; /* task queue entry */
u_int16_t c_opcode; /* SD or MMC command index */
u_int32_t c_arg; /* SD/MMC command argument */
sdmmc_response c_resp; /* response buffer */
void *c_data; /* buffer to send or read into */
int c_datalen; /* length of data buffer */
int c_blklen; /* block length */
int c_flags; /* see below */
#define SCF_ITSDONE 0x0001 /* command is complete */
#define SCF_CMD(flags) ((flags) & 0x00f0)
#define SCF_CMD_AC 0x0000
#define SCF_CMD_ADTC 0x0010
#define SCF_CMD_BC 0x0020
#define SCF_CMD_BCR 0x0030
#define SCF_CMD_READ 0x0040 /* read command (data expected) */
#define SCF_RSP_BSY 0x0100
#define SCF_RSP_136 0x0200
#define SCF_RSP_CRC 0x0400
#define SCF_RSP_IDX 0x0800
#define SCF_RSP_PRESENT 0x1000
/* response types */
#define SCF_RSP_R0 0 /* none */
#define SCF_RSP_R1 (SCF_RSP_PRESENT|SCF_RSP_CRC|SCF_RSP_IDX)
#define SCF_RSP_R1B (SCF_RSP_PRESENT|SCF_RSP_CRC|SCF_RSP_IDX|SCF_RSP_BSY)
#define SCF_RSP_R2 (SCF_RSP_PRESENT|SCF_RSP_CRC|SCF_RSP_136)
#define SCF_RSP_R3 (SCF_RSP_PRESENT)
#define SCF_RSP_R4 (SCF_RSP_PRESENT)
#define SCF_RSP_R5 (SCF_RSP_PRESENT|SCF_RSP_CRC|SCF_RSP_IDX)
#define SCF_RSP_R5B (SCF_RSP_PRESENT|SCF_RSP_CRC|SCF_RSP_IDX|SCF_RSP_BSY)
#define SCF_RSP_R6 (SCF_RSP_PRESENT|SCF_RSP_CRC|SCF_RSP_IDX)
#define SCF_RSP_R7 (SCF_RSP_PRESENT|SCF_RSP_CRC|SCF_RSP_IDX)
int c_error; /* errno value on completion */
/* Host controller owned fields for data xfer in progress */
int c_resid; /* remaining I/O */
u_char *c_buf; /* remaining data */
#endif
}
int sdmmc_select(struct device *dev)
{
int no = (int)dev;
struct sdmmc_card *c = &cards[no];
struct sdmmc_command cmd;
DPRINTF(2, ("sdmmc: MMC_SELECT_CARD\n"));
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_SELECT_CARD;
cmd.c_arg = ((u32)c->rca)<<16;;
cmd.c_flags = SCF_RSP_R1;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: MMC_SELECT card failed with %d for %d.\n",
cmd.c_error, no);
return -1;
}
c->selected = 1;
return 0;
}
int sdmmc_check_card(struct device *dev)
{
int no = (int)dev;
struct sdmmc_card *c = &cards[no];
if (c->inserted == 0)
return SDMMC_NO_CARD;
if (c->new_card == 1)
return SDMMC_NEW_CARD;
return SDMMC_INSERTED;
}
int sdmmc_ack_card(struct device *dev)
{
int no = (int)dev;
struct sdmmc_card *c = &cards[no];
if (c->new_card == 1) {
c->new_card = 0;
return 0;
}
return -1;
}
int sdmmc_read(struct device *dev, u32 blk_start, u32 blk_count, void *data)
{
int no = (int)dev;
struct sdmmc_card *c = &cards[no];
struct sdmmc_command cmd;
if (c->inserted == 0) {
gecko_printf("sdmmc: READ: no card inserted.\n");
return -1;
}
if (c->selected == 0) {
if (sdmmc_select(dev) < 0) {
gecko_printf("sdmmc: READ: cannot select card.\n");
return -1;
}
}
if (c->new_card == 1) {
gecko_printf("sdmmc: new card inserted but not acknowledged yet.\n");
return -1;
}
DPRINTF(2, ("sdmmc: MMC_READ_BLOCK_MULTIPLE\n"));
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_READ_BLOCK_MULTIPLE;
if (c->sdhc_blockmode)
cmd.c_arg = blk_start;
else
cmd.c_arg = blk_start * SDMMC_DEFAULT_BLOCKLEN;
cmd.c_data = data;
cmd.c_datalen = blk_count * SDMMC_DEFAULT_BLOCKLEN;
cmd.c_blklen = SDMMC_DEFAULT_BLOCKLEN;
cmd.c_flags = SCF_RSP_R1 | SCF_CMD_READ;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: MMC_READ_BLOCK_MULTIPLE failed for "
"card %d with %d\n", no, cmd.c_error);
return -1;
}
DPRINTF(2, ("sdmmc: MMC_READ_BLOCK_MULTIPLE done\n"));
return 0;
}
#ifndef LOADER
int sdmmc_write(struct device *dev, u32 blk_start, u32 blk_count, void *data)
{
int no = (int)dev;
struct sdmmc_card *c = &cards[no];
struct sdmmc_command cmd;
if (c->inserted == 0) {
gecko_printf("sdmmc: READ: no card inserted.\n");
return -1;
}
if (c->selected == 0) {
if (sdmmc_select(dev) < 0) {
gecko_printf("sdmmc: READ: cannot select card.\n");
return -1;
}
}
if (c->new_card == 1) {
gecko_printf("sdmmc: new card inserted but not acknowledged yet.\n");
return -1;
}
DPRINTF(2, ("sdmmc: MMC_WRITE_BLOCK_MULTIPLE\n"));
memset(&cmd, 0, sizeof(cmd));
cmd.c_opcode = MMC_WRITE_BLOCK_MULTIPLE;
if (c->sdhc_blockmode)
cmd.c_arg = blk_start;
else
cmd.c_arg = blk_start * SDMMC_DEFAULT_BLOCKLEN;
cmd.c_data = data;
cmd.c_datalen = blk_count * SDMMC_DEFAULT_BLOCKLEN;
cmd.c_blklen = SDMMC_DEFAULT_BLOCKLEN;
cmd.c_flags = SCF_RSP_R1;
sdmmc_host_exec_command(c, &cmd);
if (cmd.c_error) {
gecko_printf("sdmmc: MMC_READ_BLOCK_MULTIPLE failed for "
"card %d with %d\n", no, cmd.c_error);
return -1;
}
DPRINTF(2, ("sdmmc: MMC_WRITE_BLOCK_MULTIPLE done\n"));
return 0;
}
int sdmmc_get_sectors(struct device *dev)
{
int no = (int)dev;
struct sdmmc_card *c = &cards[no];
if (c->inserted == 0) {
gecko_printf("sdmmc: READ: no card inserted.\n");
return -1;
}
if (c->new_card == 1) {
gecko_printf("sdmmc: new card inserted but not acknowledged yet.\n");
return -1;
}
// sdhc_error(sdhci->reg_base, "num sectors = %u", sdhci->num_sectors);
return c->num_sectors;
}
#endif
#ifdef CAN_HAZ_IPC
void sdmmc_ipc(volatile ipc_request *req)
{
int ret;
switch (req->req) {
case IPC_SDMMC_ACK:
ret = sdmmc_ack_card(SDMMC_DEFAULT_DEVICE);
ipc_post(req->code, req->tag, 1, ret);
break;
case IPC_SDMMC_READ:
ret = sdmmc_read(SDMMC_DEFAULT_DEVICE, req->args[0],
req->args[1], (void *)req->args[2]);
dc_flushrange((void *)req->args[2],
req->args[1]*SDMMC_DEFAULT_BLOCKLEN);
ipc_post(req->code, req->tag, 1, ret);
break;
case IPC_SDMMC_WRITE:
dc_invalidaterange((void *)req->args[2],
req->args[1]*SDMMC_DEFAULT_BLOCKLEN);
ret = sdmmc_write(SDMMC_DEFAULT_DEVICE, req->args[0],
req->args[1], (void *)req->args[2]);
ipc_post(req->code, req->tag, 1, ret);
break;
case IPC_SDMMC_STATE:
ipc_post(req->code, req->tag, 1,
sdmmc_check_card(SDMMC_DEFAULT_DEVICE));
break;
case IPC_SDMMC_SIZE:
ipc_post(req->code, req->tag, 1,
sdmmc_get_sectors(SDMMC_DEFAULT_DEVICE));
break;
}
}
#endif