Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

[linux-2.6] / arch / powerpc / boot / devtree.c

diff --git a/arch/powerpc/boot/devtree.c b/arch/powerpc/boot/devtree.c
index ac4b5ee92d585091f970b30b723685718df61e4b..c9951550ed2c48ce26c1ef9e8028196be2cb4eb3 100644 (file)
--- a/arch/powerpc/boot/devtree.c
+++ b/arch/powerpc/boot/devtree.c
@@ -207,12 +207,13 @@ static int find_range(u32 *reg, u32 *ranges, int nregaddr,
  * In particular, PCI is not supported.  Also, only the beginning of the
  * reg block is tracked; size is ignored except in ranges.
  */
-int dt_xlate_reg(void *node, int res, unsigned long *addr,
-                 unsigned long *size)
+static u32 dt_xlate_buf[MAX_ADDR_CELLS * MAX_RANGES * 3];
+
+static int dt_xlate(void *node, int res, int reglen, unsigned long *addr,
+               unsigned long *size)
 {
        u32 last_addr[MAX_ADDR_CELLS];
        u32 this_addr[MAX_ADDR_CELLS];
-       u32 buf[MAX_ADDR_CELLS * MAX_RANGES * 3];
        void *parent;
        u64 ret_addr, ret_size;
        u32 naddr, nsize, prev_naddr;
@@ -227,19 +228,18 @@ int dt_xlate_reg(void *node, int res, unsigned long *addr,
        if (nsize > 2)
                return 0;
 
-       buflen = getprop(node, "reg", buf, sizeof(buf)) / 4;
        offset = (naddr + nsize) * res;
 
-       if (buflen < offset + naddr + nsize ||
-           sizeof(buf) < offset + naddr + nsize)
+       if (reglen < offset + naddr + nsize ||
+           sizeof(dt_xlate_buf) < offset + naddr + nsize)
                return 0;
 
-       copy_val(last_addr, buf + offset, naddr);
+       copy_val(last_addr, dt_xlate_buf + offset, naddr);
 
-       ret_size = buf[offset + naddr];
+       ret_size = dt_xlate_buf[offset + naddr];
        if (nsize == 2) {
                ret_size <<= 32;
-               ret_size |= buf[offset + naddr + 1];
+               ret_size |= dt_xlate_buf[offset + naddr + 1];
        }
 
        while ((node = get_parent(node))) {
@@ -247,24 +247,25 @@ int dt_xlate_reg(void *node, int res, unsigned long *addr,
 
                get_reg_format(node, &naddr, &nsize);
 
-               buflen = getprop(node, "ranges", buf, sizeof(buf));
+               buflen = getprop(node, "ranges", dt_xlate_buf,
+                               sizeof(dt_xlate_buf));
                if (buflen < 0)
                        continue;
-               if (buflen > sizeof(buf))
+               if (buflen > sizeof(dt_xlate_buf))
                        return 0;
 
-               offset = find_range(last_addr, buf, prev_naddr,
+               offset = find_range(last_addr, dt_xlate_buf, prev_naddr,
                                    naddr, nsize, buflen / 4);
 
                if (offset < 0)
                        return 0;
 
-               copy_val(this_addr, buf + offset, prev_naddr);
+               copy_val(this_addr, dt_xlate_buf + offset, prev_naddr);
 
                if (!sub_reg(last_addr, this_addr))
                        return 0;
 
-               copy_val(this_addr, buf + offset + prev_naddr, naddr);
+               copy_val(this_addr, dt_xlate_buf + offset + prev_naddr, naddr);
 
                if (!add_reg(last_addr, this_addr, naddr))
                        return 0;
@@ -286,3 +287,21 @@ int dt_xlate_reg(void *node, int res, unsigned long *addr,
 
        return 1;
 }
+
+int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size)
+{
+       int reglen;
+
+       reglen = getprop(node, "reg", dt_xlate_buf, sizeof(dt_xlate_buf)) / 4;
+       return dt_xlate(node, res, reglen, addr, size);
+}
+
+int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr)
+{
+
+       if (buflen > sizeof(dt_xlate_buf))
+               return 0;
+
+       memcpy(dt_xlate_buf, buf, buflen);
+       return dt_xlate(node, 0, buflen / 4, xlated_addr, NULL);
+}