Merge branch 'master' of git://www.denx.de/git/u-boot-imx

[karo-tx-uboot.git] / drivers / mmc / dw_mmc.c

diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
index 684a2a8df7808053f41b72dd72cf8ff1af13223b..4cec5aaa604b0fdba8bedbfed149e2405a6e7ded 100644 (file)
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -3,22 +3,10 @@
  * 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>
@@ -54,12 +42,13 @@ static void dwmci_set_idma_desc(struct dwmci_idmac *idmac,
 }
 
 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;
@@ -69,11 +58,6 @@ static void dwmci_prepare_data(struct dwmci_host *host,
        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;
@@ -84,9 +68,9 @@ static void dwmci_prepare_data(struct dwmci_host *host,
                        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++;
@@ -124,11 +108,14 @@ 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;
+       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 (get_timer(start) > timeout) {
@@ -139,8 +126,19 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 
        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);
 
@@ -216,6 +214,8 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
                ctrl = dwmci_readl(host, DWMCI_CTRL);
                ctrl &= ~(DWMCI_DMA_EN);
                dwmci_writel(host, DWMCI_CTRL, ctrl);
+
+               bounce_buffer_stop(&bbstate);
        }
 
        udelay(100);
@@ -232,12 +232,12 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)
        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->dev_index);
        else if (host->bus_hz)
                sclk = host->bus_hz;
        else {
@@ -311,7 +311,9 @@ static void dwmci_set_ios(struct mmc *mmc)
 static int dwmci_init(struct mmc *mmc)
 {
        struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
-       u32 fifo_size;
+
+       if (host->board_init)
+               host->board_init(host);
 
        dwmci_writel(host, DWMCI_PWREN, 1);
 
@@ -331,13 +333,9 @@ static int dwmci_init(struct mmc *mmc)
        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);
@@ -350,9 +348,9 @@ 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;
        }