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-rw-r--r--drivers/mmc/host/sdhci-esdhc-imx.c16
-rwxr-xr-xdrivers/mmc/host/sdhci.c47
2 files changed, 44 insertions, 19 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 2296eb8d1c18..3dcfcb043ef0 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -134,6 +134,16 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg)
val |= SDHCI_CARD_PRESENT;
}
+ if (reg == SDHCI_CAPABILITIES && cpu_is_mvf())
+ {
+ if (val & SDHCI_CAN_DO_ADMA1) {
+ u32 tmp = readl(host->ioaddr + SDHCI_SLOT_INT_STATUS);
+ tmp = (tmp & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
+ if (tmp >= 0x12)
+ val |= SDHCI_CAN_DO_ADMA2;
+ }
+ }
+
if (reg == SDHCI_INT_STATUS && cpu_is_mx6()
&& mx6q_revision() == IMX_CHIP_REVISION_1_0) {
/*
@@ -786,10 +796,16 @@ static void esdhc_pltfm_exit(struct sdhci_host *host)
}
struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
+#ifdef CONFIG_ARCH_MVF
+ .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_CARD_DETECTION
+ | SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_NO_CARD_NO_RESET
+ | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC,
+#else
.quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_ADMA
| SDHCI_QUIRK_BROKEN_CARD_DETECTION
| SDHCI_QUIRK_NO_HISPD_BIT,
/* ADMA has issues. Might be fixable */
+#endif
.ops = &sdhci_esdhc_ops,
.init = esdhc_pltfm_init,
.exit = esdhc_pltfm_exit,
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 82afe0522ecc..189dff37e84e 100755
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2,6 +2,7 @@
* linux/drivers/mmc/host/sdhci.c - Secure Digital Host Controller Interface driver
*
* Copyright (C) 2005-2011 Pierre Ossman, All Rights Reserved.
+ * Copyright 2012 Freescale Semiconductor, Inc.
*
* 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
@@ -42,6 +43,12 @@
#define MAX_TUNING_LOOP 40
+#ifdef CONFIG_ARCH_MVF
+#define ADDR_ALIGNED 0xF
+#else
+#define ADDR_ALIGNED 0x3
+#endif
+
static unsigned int debug_quirks = 0;
static void sdhci_finish_data(struct sdhci_host *);
@@ -497,10 +504,10 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
*/
host->align_addr = dma_map_single(mmc_dev(host->mmc),
- host->align_buffer, 128 * 4, direction);
+ host->align_buffer, 128 * (ADDR_ALIGNED + 1), direction);
if (dma_mapping_error(mmc_dev(host->mmc), host->align_addr))
goto fail;
- BUG_ON(host->align_addr & 0x3);
+ BUG_ON(host->align_addr & ADDR_ALIGNED);
host->sg_count = dma_map_sg(mmc_dev(host->mmc),
data->sg, data->sg_len, direction);
@@ -523,22 +530,22 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
* the (up to three) bytes that screw up the
* alignment.
*/
- offset = (4 - (addr & 0x3)) & 0x3;
+ offset = ((ADDR_ALIGNED + 1) - (addr & ADDR_ALIGNED)) & ADDR_ALIGNED;
if (offset) {
if (data->flags & MMC_DATA_WRITE) {
buffer = sdhci_kmap_atomic(sg, &flags);
- WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3));
+ WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - ADDR_ALIGNED));
memcpy(align, buffer, offset);
sdhci_kunmap_atomic(buffer, &flags);
}
/* tran, valid */
- sdhci_set_adma_desc(desc, align_addr, offset, 0x21);
+ sdhci_set_adma_desc(desc, align_addr, (len - offset) ? offset : len, 0x21);
BUG_ON(offset > 65536);
- align += 4;
- align_addr += 4;
+ align += (ADDR_ALIGNED + 1);
+ align_addr += (ADDR_ALIGNED + 1);
desc += 8;
@@ -549,8 +556,10 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
BUG_ON(len > 65536);
/* tran, valid */
- sdhci_set_adma_desc(desc, addr, len, 0x21);
- desc += 8;
+ if (len > 0) {
+ sdhci_set_adma_desc(desc, addr, len, 0x21);
+ desc += 8;
+ }
/*
* If this triggers then we have a calculation bug
@@ -581,14 +590,14 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
*/
if (data->flags & MMC_DATA_WRITE) {
dma_sync_single_for_device(mmc_dev(host->mmc),
- host->align_addr, 128 * 4, direction);
+ host->align_addr, 128 * (ADDR_ALIGNED + 1), direction);
}
host->adma_addr = dma_map_single(mmc_dev(host->mmc),
host->adma_desc, (128 * 2 + 1) * 4, DMA_TO_DEVICE);
if (dma_mapping_error(mmc_dev(host->mmc), host->adma_addr))
goto unmap_entries;
- BUG_ON(host->adma_addr & 0x3);
+ BUG_ON(host->adma_addr & ADDR_ALIGNED);
return 0;
@@ -597,7 +606,7 @@ unmap_entries:
data->sg_len, direction);
unmap_align:
dma_unmap_single(mmc_dev(host->mmc), host->align_addr,
- 128 * 4, direction);
+ 128 * (ADDR_ALIGNED + 1), direction);
fail:
return -EINVAL;
}
@@ -622,7 +631,7 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
(128 * 2 + 1) * 4, DMA_TO_DEVICE);
dma_unmap_single(mmc_dev(host->mmc), host->align_addr,
- 128 * 4, direction);
+ 128 * (ADDR_ALIGNED + 1), direction);
if (data->flags & MMC_DATA_READ) {
dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg,
@@ -631,15 +640,15 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
align = host->align_buffer;
for_each_sg(data->sg, sg, host->sg_count, i) {
- if (sg_dma_address(sg) & 0x3) {
- size = 4 - (sg_dma_address(sg) & 0x3);
+ if (sg_dma_address(sg) & ADDR_ALIGNED) {
+ size = (ADDR_ALIGNED + 1) - (sg_dma_address(sg) & ADDR_ALIGNED);
buffer = sdhci_kmap_atomic(sg, &flags);
- WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - 3));
- memcpy(buffer, align, size);
+ WARN_ON(((long)buffer & PAGE_MASK) > (PAGE_SIZE - ADDR_ALIGNED));
+ memcpy(buffer, align, (size - data->sg->length) ? data->sg->length : size);
sdhci_kunmap_atomic(buffer, &flags);
- align += 4;
+ align += (ADDR_ALIGNED + 1);
}
}
}
@@ -2559,7 +2568,7 @@ int sdhci_add_host(struct sdhci_host *host)
* each of those entries.
*/
host->adma_desc = kmalloc((128 * 2 + 1) * 4, GFP_KERNEL);
- host->align_buffer = kmalloc(128 * 4, GFP_KERNEL);
+ host->align_buffer = kmalloc(128 * (ADDR_ALIGNED + 1), GFP_KERNEL);
if (!host->adma_desc || !host->align_buffer) {
kfree(host->adma_desc);
kfree(host->align_buffer);
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-18 23:43:13 +0000