Add Waldemar's patches for Linux 3.2

[yaffs2.git] / yaffs_mtdif1_multi.c

diff --git a/yaffs_mtdif1_multi.c b/yaffs_mtdif1_multi.c
index cbaa326afad17e0e8c3d9341609dd9694af75397..14d5c6f0d3579b5c6e82c12878253fe0b762da16 100644 (file)
--- a/yaffs_mtdif1_multi.c
+++ b/yaffs_mtdif1_multi.c
@@ -36,18 +36,18 @@
 #include "linux/types.h"
 #include "linux/mtd/mtd.h"
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0))
+#define MTD_OPS_AUTO_OOB MTD_OOB_AUTO
+#endif
+
+
 /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
 #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
 
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
-# define YTAG1_SIZE 8
-#else
-# define YTAG1_SIZE 9
-#endif
 
 #if 0
 /* Use the following nand_ecclayout with MTD when using
- * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout.
+ * 9 byte tags and the older on-NAND tags layout.
  * If you have existing Yaffs images and the byte order differs from this,
  * adjust 'oobfree' to match your existing Yaffs data.
  *
@@ -113,25 +113,25 @@ int nandmtd1_write_chunk_tags(struct yaffs_dev *dev,
         * that only zeroed-bits stick and set tag bytes to all-ones and
         * zero just the (not) deleted bit.
         */
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
-       if (etags->is_deleted) {
-               memset(&pt1, 0xff, 8);
-               /* clear delete status bit to indicate deleted */
-               pt1.deleted = 0;
-       }
-#else
-       ((u8 *) &pt1)[8] = 0xff;
-       if (etags->is_deleted) {
-               memset(&pt1, 0xff, 8);
-               /* zero page_status byte to indicate deleted */
-               ((u8 *) &pt1)[8] = 0;
+       if(dev->param.tags_9bytes) {
+               ((u8 *) &pt1)[8] = 0xff;
+               if (etags->is_deleted) {
+                       memset(&pt1, 0xff, 8);
+                       /* zero page_status byte to indicate deleted */
+                       ((u8 *) &pt1)[8] = 0;
+                }
+        } else {
+               if (etags->is_deleted) {
+                       memset(&pt1, 0xff, 8);
+                       /* clear delete status bit to indicate deleted */
+                       pt1.deleted = 0;
+                }
        }
-#endif
 
        memset(&ops, 0, sizeof(ops));
-       ops.mode = MTD_OOB_AUTO;
+       ops.mode = MTD_OPS_AUTO_OOB;
        ops.len = (data) ? chunk_bytes : 0;
-       ops.ooblen = YTAG1_SIZE;
+       ops.ooblen = dev->param.tags_9bytes ? 9 : 8;
        ops.datbuf = (u8 *) data;
        ops.oobbuf = (u8 *) &pt1;
 
@@ -182,9 +182,9 @@ int nandmtd1_read_chunk_tags(struct yaffs_dev *dev,
        int deleted;
 
        memset(&ops, 0, sizeof(ops));
-       ops.mode = MTD_OOB_AUTO;
+       ops.mode = MTD_OPS_AUTO_OOB;
        ops.len = (data) ? chunk_bytes : 0;
-       ops.ooblen = YTAG1_SIZE;
+       ops.ooblen = dev->param.tags_9bytes ? 9 : 8;
        ops.datbuf = data;
        ops.oobbuf = (u8 *) &pt1;
 
@@ -230,16 +230,17 @@ int nandmtd1_read_chunk_tags(struct yaffs_dev *dev,
                /* when blank, upper layers want ecc_result to be <= NO_ERROR */
                return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
        }
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
-       /* Read deleted status (bit) then return it to it's non-deleted
-        * state before performing tags mini-ECC check. pt1.deleted is
-        * inverted.
-        */
-       deleted = !pt1.deleted;
-       pt1.deleted = 1;
-#else
-       deleted = (hweight8(((u8 *) &pt1)[8]) < 7);
-#endif
+
+       if(dev->param.tags_9bytes) {
+               deleted = (hweight8(((u8 *) &pt1)[8]) < 7);
+        } else {
+               /* Read deleted status (bit) then return it to it's non-deleted
+                * state before performing tags mini-ECC check. pt1.deleted is
+                * inverted.
+                */
+               deleted = !pt1.deleted;
+               pt1.deleted = 1;
+        }
 
        /* Check the packed tags mini-ECC and correct if necessary/possible.
         */
@@ -295,16 +296,16 @@ int nandmtd1_mark_block_bad(struct yaffs_dev *dev, int block_no)
  *
  * Returns YAFFS_OK or YAFFS_FAIL.
  */
-static int nandmtd1_test_prerequists(struct mtd_info *mtd)
+static int nandmtd1_test_prerequists(struct yaffs_dev *dev, struct mtd_info *mtd)
 {
        /* 2.6.18 has mtd->ecclayout->oobavail */
        /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
        int oobavail = mtd->ecclayout->oobavail;
 
-       if (oobavail < YTAG1_SIZE) {
+       if (oobavail < (dev->param.tags_9bytes ? 9 : 8)) {
                yaffs_trace(YAFFS_TRACE_ERROR,
                        "mtd device has only %d bytes for tags, need %d",
-                       oobavail, YTAG1_SIZE);
+                       oobavail, dev->param.tags_9bytes ? 9 : 8);
                return YAFFS_FAIL;
        }
        return YAFFS_OK;
@@ -333,7 +334,7 @@ int nandmtd1_query_block(struct yaffs_dev *dev, int block_no,
        /* We don't yet have a good place to test for MTD config prerequists.
         * Do it here as we are called during the initial scan.
         */
-       if (nandmtd1_test_prerequists(mtd) != YAFFS_OK)
+       if (nandmtd1_test_prerequists(dev, mtd) != YAFFS_OK)
                return YAFFS_FAIL;
 
        retval = nandmtd1_read_chunk_tags(dev, chunk_num, NULL, &etags);