* Jaehoon Chung <jh80.chung@samsung.com>
* Rajeshawari Shinde <rajeshwari.s@samsung.com>
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * SPDX-License-Identifier: GPL-2.0+
*/
+#include <bouncebuf.h>
#include <common.h>
#include <malloc.h>
#include <mmc.h>
#include <dwmmc.h>
-#include <asm/arch/clk.h>
#include <asm-generic/errno.h>
#define PAGE_SIZE 4096
}
static void dwmci_prepare_data(struct dwmci_host *host,
- struct mmc_data *data)
+ 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;
- ALLOC_CACHE_ALIGN_BUFFER(struct dwmci_idmac, cur_idmac, data->blocks);
+ 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)
+ if (blk_cnt <= 8)
break;
blk_cnt -= 8;
cur_idmac++;
struct mmc_data *data)
{
struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
+ ALLOC_CACHE_ALIGN_BUFFER(struct dwmci_idmac, cur_idmac,
+ data ? DIV_ROUND_UP(data->blocks, 8) : 0);
int flags = 0, i;
unsigned int timeout = 100000;
u32 retry = 10000;
u32 mask, ctrl;
+ ulong start = get_timer(0);
+ struct bounce_buffer bbstate;
while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) {
- if (timeout == 0) {
+ if (get_timer(start) > timeout) {
printf("Timeout on data busy\n");
return TIMEOUT;
}
- timeout--;
}
dwmci_writel(host, DWMCI_RINTSTS, DWMCI_INTMSK_ALL);
- if (data)
- dwmci_prepare_data(host, data);
-
+ 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);
ctrl = dwmci_readl(host, DWMCI_CTRL);
ctrl &= ~(DWMCI_DMA_EN);
dwmci_writel(host, DWMCI_CTRL, ctrl);
+
+ bounce_buffer_stop(&bbstate);
}
udelay(100);
int timeout = 10000;
unsigned long sclk;
- if (freq == host->clock)
+ if ((freq == host->clock) || (freq == 0))
return 0;
-
/*
- * If host->mmc_clk didn't define,
+ * If host->get_mmc_clk didn't define,
* then assume that host->bus_hz is source clock value.
* host->bus_hz should be set from user.
*/
- if (host->mmc_clk)
- sclk = host->mmc_clk(host->dev_index);
+ if (host->get_mmc_clk)
+ sclk = host->get_mmc_clk(host);
else if (host->bus_hz)
sclk = host->bus_hz;
else {
static int dwmci_init(struct mmc *mmc)
{
struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
- u32 fifo_size, fifoth_val;
+
+ if (host->board_init)
+ host->board_init(host);
dwmci_writel(host, DWMCI_PWREN, 1);
return -1;
}
+ /* Enumerate at 400KHz */
+ dwmci_setup_bus(host, mmc->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);
- fifo_size = dwmci_readl(host, DWMCI_FIFOTH);
- if (host->fifoth_val)
- fifoth_val = host->fifoth_val;
- else
- fifoth_val = MSIZE(0x2) | RX_WMARK(fifo_size/2 -1) |
- TX_WMARK(fifo_size/2);
- dwmci_writel(host, DWMCI_FIFOTH, fifoth_val);
+ if (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;
- mmc = malloc(sizeof(struct mmc));
+ mmc = calloc(sizeof(struct mmc), 1);
if (!mmc) {
- printf("mmc malloc fail!\n");
+ printf("mmc calloc fail!\n");
return -1;
}
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->ops = &dwmci_ops;
mmc->f_min = min_clk;
mmc->f_max = max_clk;
projects / people / ms / u-boot.git / blobdiff