* SPDX-License-Identifier: GPL-2.0+
*/
+#include <bouncebuf.h>
#include <common.h>
#include <malloc.h>
#include <mmc.h>
#include <dwmmc.h>
#include <asm-generic/errno.h>
-#include <asm/arch/dwmmc.h>
#define PAGE_SIZE 4096
}
static void dwmci_prepare_data(struct dwmci_host *host,
- struct mmc_data *data, struct dwmci_idmac *cur_idmac)
+ struct mmc_data *data,
+ struct dwmci_idmac *cur_idmac,
+ void *bounce_buffer)
{
unsigned long ctrl;
unsigned int i = 0, flags, cnt, blk_cnt;
- ulong data_start, data_end, start_addr;
+ ulong data_start, data_end;
blk_cnt = data->blocks;
data_start = (ulong)cur_idmac;
dwmci_writel(host, DWMCI_DBADDR, (unsigned int)cur_idmac);
- if (data->flags == MMC_DATA_READ)
- start_addr = (unsigned int)data->dest;
- else
- start_addr = (unsigned int)data->src;
-
do {
flags = DWMCI_IDMAC_OWN | DWMCI_IDMAC_CH ;
flags |= (i == 0) ? DWMCI_IDMAC_FS : 0;
cnt = data->blocksize * 8;
dwmci_set_idma_desc(cur_idmac, flags, cnt,
- start_addr + (i * PAGE_SIZE));
+ (u32)bounce_buffer + (i * PAGE_SIZE));
if (blk_cnt <= 8)
break;
static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data)
{
- struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
+ struct dwmci_host *host = mmc->priv;
ALLOC_CACHE_ALIGN_BUFFER(struct dwmci_idmac, cur_idmac,
data ? DIV_ROUND_UP(data->blocks, 8) : 0);
int flags = 0, i;
u32 retry = 10000;
u32 mask, ctrl;
ulong start = get_timer(0);
+ struct bounce_buffer bbstate;
while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) {
if (get_timer(start) > timeout) {
- printf("Timeout on data busy\n");
+ printf("%s: Timeout on data busy\n", __func__);
return TIMEOUT;
}
}
dwmci_writel(host, DWMCI_RINTSTS, DWMCI_INTMSK_ALL);
- if (data)
- dwmci_prepare_data(host, data, cur_idmac);
+ if (data) {
+ if (data->flags == MMC_DATA_READ) {
+ bounce_buffer_start(&bbstate, (void*)data->dest,
+ data->blocksize *
+ data->blocks, GEN_BB_WRITE);
+ } else {
+ bounce_buffer_start(&bbstate, (void*)data->src,
+ data->blocksize *
+ data->blocks, GEN_BB_READ);
+ }
+ dwmci_prepare_data(host, data, cur_idmac,
+ bbstate.bounce_buffer);
+ }
dwmci_writel(host, DWMCI_CMDARG, cmd->cmdarg);
}
}
- if (i == retry)
+ if (i == retry) {
+ printf("%s: Timeout.\n", __func__);
return TIMEOUT;
+ }
if (mask & DWMCI_INTMSK_RTO) {
- debug("Response Timeout..\n");
+ /*
+ * Timeout here is not necessarily fatal. (e)MMC cards
+ * will splat here when they receive CMD55 as they do
+ * not support this command and that is exactly the way
+ * to tell them apart from SD cards. Thus, this output
+ * below shall be debug(). eMMC cards also do not favor
+ * CMD8, please keep that in mind.
+ */
+ debug("%s: Response Timeout.\n", __func__);
return TIMEOUT;
} else if (mask & DWMCI_INTMSK_RE) {
- debug("Response Error..\n");
+ printf("%s: Response Error.\n", __func__);
return -1;
}
do {
mask = dwmci_readl(host, DWMCI_RINTSTS);
if (mask & (DWMCI_DATA_ERR | DWMCI_DATA_TOUT)) {
- debug("DATA ERROR!\n");
+ printf("%s: DATA ERROR!\n", __func__);
return -1;
}
} while (!(mask & DWMCI_INTMSK_DTO));
ctrl = dwmci_readl(host, DWMCI_CTRL);
ctrl &= ~(DWMCI_DMA_EN);
dwmci_writel(host, DWMCI_CTRL, ctrl);
+
+ bounce_buffer_stop(&bbstate);
}
udelay(100);
if ((freq == host->clock) || (freq == 0))
return 0;
/*
- * If host->get_mmc_clk didn't define,
+ * If host->get_mmc_clk isn't defined,
* then assume that host->bus_hz is source clock value.
- * host->bus_hz should be set from user.
+ * host->bus_hz should be set by user.
*/
if (host->get_mmc_clk)
- sclk = host->get_mmc_clk(host->dev_index);
+ sclk = host->get_mmc_clk(host);
else if (host->bus_hz)
sclk = host->bus_hz;
else {
- printf("Didn't get source clock value..\n");
+ printf("%s: Didn't get source clock value.\n", __func__);
return -EINVAL;
}
- div = DIV_ROUND_UP(sclk, 2 * freq);
+ if (sclk == freq)
+ div = 0; /* bypass mode */
+ else
+ div = DIV_ROUND_UP(sclk, 2 * freq);
dwmci_writel(host, DWMCI_CLKENA, 0);
dwmci_writel(host, DWMCI_CLKSRC, 0);
do {
status = dwmci_readl(host, DWMCI_CMD);
if (timeout-- < 0) {
- printf("TIMEOUT error!!\n");
+ printf("%s: Timeout!\n", __func__);
return -ETIMEDOUT;
}
} while (status & DWMCI_CMD_START);
do {
status = dwmci_readl(host, DWMCI_CMD);
if (timeout-- < 0) {
- printf("TIMEOUT error!!\n");
+ printf("%s: Timeout!\n", __func__);
return -ETIMEDOUT;
}
} while (status & DWMCI_CMD_START);
static void dwmci_set_ios(struct mmc *mmc)
{
struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
- u32 ctype;
+ u32 ctype, regs;
- debug("Buswidth = %d, clock: %d\n",mmc->bus_width, mmc->clock);
+ debug("Buswidth = %d, clock: %d\n", mmc->bus_width, mmc->clock);
dwmci_setup_bus(host, mmc->clock);
switch (mmc->bus_width) {
dwmci_writel(host, DWMCI_CTYPE, ctype);
+ regs = dwmci_readl(host, DWMCI_UHS_REG);
+ if (mmc->ddr_mode)
+ regs |= DWMCI_DDR_MODE;
+ else
+ regs &= DWMCI_DDR_MODE;
+
+ dwmci_writel(host, DWMCI_UHS_REG, regs);
+
if (host->clksel)
host->clksel(host);
}
static int dwmci_init(struct mmc *mmc)
{
- struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
- u32 fifo_size;
-
- if (host->quirks & DWMCI_QUIRK_DISABLE_SMU) {
- dwmci_writel(host, EMMCP_MPSBEGIN0, 0);
- dwmci_writel(host, EMMCP_SEND0, 0);
- dwmci_writel(host, EMMCP_CTRL0,
- MPSCTRL_SECURE_READ_BIT |
- MPSCTRL_SECURE_WRITE_BIT |
- MPSCTRL_NON_SECURE_READ_BIT |
- MPSCTRL_NON_SECURE_WRITE_BIT | MPSCTRL_VALID);
- }
+ struct dwmci_host *host = mmc->priv;
+
+ if (host->board_init)
+ host->board_init(host);
dwmci_writel(host, DWMCI_PWREN, 1);
if (!dwmci_wait_reset(host, DWMCI_RESET_ALL)) {
- debug("%s[%d] Fail-reset!!\n",__func__,__LINE__);
+ printf("%s[%d] Fail-reset!!\n", __func__, __LINE__);
return -1;
}
/* Enumerate at 400KHz */
- dwmci_setup_bus(host, mmc->f_min);
+ dwmci_setup_bus(host, mmc->cfg->f_min);
dwmci_writel(host, DWMCI_RINTSTS, 0xFFFFFFFF);
dwmci_writel(host, DWMCI_INTMASK, 0);
dwmci_writel(host, DWMCI_IDINTEN, 0);
dwmci_writel(host, DWMCI_BMOD, 1);
- if (!host->fifoth_val) {
- fifo_size = dwmci_readl(host, DWMCI_FIFOTH);
- fifo_size = ((fifo_size & RX_WMARK_MASK) >> RX_WMARK_SHIFT) + 1;
- host->fifoth_val = MSIZE(0x2) | RX_WMARK(fifo_size / 2 - 1) |
- TX_WMARK(fifo_size / 2);
+ if (host->fifoth_val) {
+ dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
}
- dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
dwmci_writel(host, DWMCI_CLKENA, 0);
dwmci_writel(host, DWMCI_CLKSRC, 0);
return 0;
}
+static const struct mmc_ops dwmci_ops = {
+ .send_cmd = dwmci_send_cmd,
+ .set_ios = dwmci_set_ios,
+ .init = dwmci_init,
+};
+
int add_dwmci(struct dwmci_host *host, u32 max_clk, u32 min_clk)
{
- struct mmc *mmc;
- int err = 0;
+ host->cfg.name = host->name;
+ host->cfg.ops = &dwmci_ops;
+ host->cfg.f_min = min_clk;
+ host->cfg.f_max = max_clk;
- mmc = malloc(sizeof(struct mmc));
- if (!mmc) {
- printf("mmc malloc fail!\n");
- return -1;
- }
+ host->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
- mmc->priv = host;
- host->mmc = mmc;
-
- sprintf(mmc->name, "%s", host->name);
- mmc->send_cmd = dwmci_send_cmd;
- mmc->set_ios = dwmci_set_ios;
- mmc->init = dwmci_init;
- mmc->f_min = min_clk;
- mmc->f_max = max_clk;
-
- mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
-
- mmc->host_caps = host->caps;
+ host->cfg.host_caps = host->caps;
if (host->buswidth == 8) {
- mmc->host_caps |= MMC_MODE_8BIT;
- mmc->host_caps &= ~MMC_MODE_4BIT;
+ host->cfg.host_caps |= MMC_MODE_8BIT;
+ host->cfg.host_caps &= ~MMC_MODE_4BIT;
} else {
- mmc->host_caps |= MMC_MODE_4BIT;
- mmc->host_caps &= ~MMC_MODE_8BIT;
+ host->cfg.host_caps |= MMC_MODE_4BIT;
+ host->cfg.host_caps &= ~MMC_MODE_8BIT;
}
- mmc->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_HC;
+ host->cfg.host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_HC;
- err = mmc_register(mmc);
+ host->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
- return err;
+ host->mmc = mmc_create(&host->cfg, host);
+ if (host->mmc == NULL)
+ return -1;
+
+ return 0;
}
projects / karo-tx-uboot.git / blobdiff