The Renesas RCar Gen3 contains the same controller, originally
Matsushita. This patch adds support for handling of the 64bit
FIFO on this controller.
Signed-off-by: Marek Vasut <marek.vasut+rene...@gmail.com>
Cc: Masahiro Yamada <yamada.masah...@socionext.com>
Cc: Jaehoon Chung <jh80.ch...@samsung.com>
---
drivers/mmc/uniphier-sd.c | 84 +++++++++++++++++++++++++++++++++++++++++------
1 file changed, 74 insertions(+), 10 deletions(-)
diff --git a/drivers/mmc/uniphier-sd.c b/drivers/mmc/uniphier-sd.c
index 93a2c6becd..07436f6ef6 100644
--- a/drivers/mmc/uniphier-sd.c
+++ b/drivers/mmc/uniphier-sd.c
@@ -135,6 +135,23 @@ struct uniphier_sd_priv {
#define UNIPHIER_SD_CAP_64BIT BIT(3) /* Controller is 64bit */
};
+static u64 uniphier_sd_readq(struct uniphier_sd_priv *priv, const u32 reg)
+{
+ if (priv->caps & UNIPHIER_SD_CAP_64BIT)
+ return readq(priv->regbase + (reg << 1));
+ else
+ return readq(priv->regbase + reg);
+}
+
+static void uniphier_sd_writeq(struct uniphier_sd_priv *priv,
+ const u64 val, const u32 reg)
+{
+ if (priv->caps & UNIPHIER_SD_CAP_64BIT)
+ writeq(val, priv->regbase + (reg << 1));
+ else
+ writeq(val, priv->regbase + reg);
+}
+
static u32 uniphier_sd_readl(struct uniphier_sd_priv *priv, const u32 reg)
{
if (priv->caps & UNIPHIER_SD_CAP_64BIT)
@@ -248,12 +265,37 @@ static int uniphier_sd_pio_read_one_block(struct udevice
*dev, u32 **pbuf,
uniphier_sd_writel(priv, 0, UNIPHIER_SD_INFO2);
if (likely(IS_ALIGNED((unsigned long)*pbuf, 4))) {
- for (i = 0; i < blocksize / 4; i++)
- *(*pbuf)++ = uniphier_sd_readl(priv, UNIPHIER_SD_BUF);
+ if (priv->caps & UNIPHIER_SD_CAP_64BIT) {
+ for (i = 0; i < blocksize / 8; i++) {
+ u64 data;
+ data = uniphier_sd_readq(priv,
+ UNIPHIER_SD_BUF);
+ *(*pbuf)++ = data;
+ *(*pbuf)++ = data >> 32;
+ }
+ } else {
+ for (i = 0; i < blocksize / 4; i++) {
+ u32 data;
+ data = uniphier_sd_readl(priv, UNIPHIER_SD_BUF);
+ *(*pbuf)++ = data;
+ }
+ }
} else {
- for (i = 0; i < blocksize / 4; i++)
- put_unaligned(uniphier_sd_readl(priv, UNIPHIER_SD_BUF),
- (*pbuf)++);
+ if (priv->caps & UNIPHIER_SD_CAP_64BIT) {
+ for (i = 0; i < blocksize / 8; i++) {
+ u64 data;
+ data = uniphier_sd_readq(priv,
+ UNIPHIER_SD_BUF);
+ put_unaligned(data, (*pbuf)++);
+ put_unaligned(data >> 32, (*pbuf)++);
+ }
+ } else {
+ for (i = 0; i < blocksize / 4; i++) {
+ u32 data;
+ data = uniphier_sd_readl(priv, UNIPHIER_SD_BUF);
+ put_unaligned(data, (*pbuf)++);
+ }
+ }
}
return 0;
@@ -274,12 +316,34 @@ static int uniphier_sd_pio_write_one_block(struct udevice
*dev,
uniphier_sd_writel(priv, 0, UNIPHIER_SD_INFO2);
if (likely(IS_ALIGNED((unsigned long)*pbuf, 4))) {
- for (i = 0; i < blocksize / 4; i++)
- uniphier_sd_writel(priv, *(*pbuf)++, UNIPHIER_SD_BUF);
+ if (priv->caps & UNIPHIER_SD_CAP_64BIT) {
+ for (i = 0; i < blocksize / 8; i++) {
+ u64 data = *(*pbuf)++;
+ data |= (u64)*(*pbuf)++ << 32;
+ uniphier_sd_writeq(priv, data,
+ UNIPHIER_SD_BUF);
+ }
+ } else {
+ for (i = 0; i < blocksize / 4; i++) {
+ uniphier_sd_writel(priv, *(*pbuf)++,
+ UNIPHIER_SD_BUF);
+ }
+ }
} else {
- for (i = 0; i < blocksize / 4; i++)
- uniphier_sd_writel(priv, get_unaligned((*pbuf)++),
- UNIPHIER_SD_BUF);
+ if (priv->caps & UNIPHIER_SD_CAP_64BIT) {
+ for (i = 0; i < blocksize / 8; i++) {
+ u64 data = get_unaligned((*pbuf)++);
+ data |= (u64)get_unaligned((*pbuf)++) << 32;
+ uniphier_sd_writeq(priv, data,
+ UNIPHIER_SD_BUF);
+ }
+ } else {
+ for (i = 0; i < blocksize / 4; i++) {
+ u32 data = get_unaligned((*pbuf)++);
+ uniphier_sd_writel(priv, data,
+ UNIPHIER_SD_BUF);
+ }
+ }
}
return 0;
--
2.11.0
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
