From: Simon Glass <sjg@chromium.org>
Date: Wed, 21 Dec 2011 10:01:27 +0000 (+0000)
Subject: ext2: Cache line align indirection buffers
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=26784f1ecb5002aa309f2aefcb1157a9282a2007;p=project%2Fbcm63xx%2Fu-boot.git

ext2: Cache line align indirection buffers

Make ext2 use cache line aligned buffers for reading from the filesystem.
This is needed when caches are enabled because unaligned cache invalidates
are not safe.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

diff --git a/fs/ext2/ext2fs.c b/fs/ext2/ext2fs.c
index e119e1388f..f621741e40 100644
--- a/fs/ext2/ext2fs.c
+++ b/fs/ext2/ext2fs.c
@@ -265,7 +265,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
 	/* Indirect.  */
 	else if (fileblock < (INDIRECT_BLOCKS + (blksz / 4))) {
 		if (indir1_block == NULL) {
-			indir1_block = (uint32_t *) malloc (blksz);
+			indir1_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
+							     blksz);
 			if (indir1_block == NULL) {
 				printf ("** ext2fs read block (indir 1) malloc failed. **\n");
 				return (-1);
@@ -278,7 +279,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
 			indir1_block = NULL;
 			indir1_size = 0;
 			indir1_blkno = -1;
-			indir1_block = (uint32_t *) malloc (blksz);
+			indir1_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
+							     blksz);
 			if (indir1_block == NULL) {
 				printf ("** ext2fs read block (indir 1) malloc failed. **\n");
 				return (-1);
@@ -309,7 +311,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
 						   + blksz / 4);
 
 		if (indir1_block == NULL) {
-			indir1_block = (uint32_t *) malloc (blksz);
+			indir1_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
+							     blksz);
 			if (indir1_block == NULL) {
 				printf ("** ext2fs read block (indir 2 1) malloc failed. **\n");
 				return (-1);
@@ -322,7 +325,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
 			indir1_block = NULL;
 			indir1_size = 0;
 			indir1_blkno = -1;
-			indir1_block = (uint32_t *) malloc (blksz);
+			indir1_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
+							     blksz);
 			if (indir1_block == NULL) {
 				printf ("** ext2fs read block (indir 2 1) malloc failed. **\n");
 				return (-1);
@@ -343,7 +347,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
 		}
 
 		if (indir2_block == NULL) {
-			indir2_block = (uint32_t *) malloc (blksz);
+			indir2_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
+							     blksz);
 			if (indir2_block == NULL) {
 				printf ("** ext2fs read block (indir 2 2) malloc failed. **\n");
 				return (-1);
@@ -356,7 +361,8 @@ static int ext2fs_read_block (ext2fs_node_t node, int fileblock) {
 			indir2_block = NULL;
 			indir2_size = 0;
 			indir2_blkno = -1;
-			indir2_block = (uint32_t *) malloc (blksz);
+			indir2_block = (uint32_t *) memalign(ARCH_DMA_MINALIGN,
+							     blksz);
 			if (indir2_block == NULL) {
 				printf ("** ext2fs read block (indir 2 2) malloc failed. **\n");
 				return (-1);