[PATCH] powerpc: Unify udbg (#2)

This patch unifies udbg for both ppc32 and ppc64 when building the
merged achitecture. xmon now has a single "back end". The powermac udbg
stuff gets enriched with some ADB capabilities and btext output. In
addition, the early_init callback is now called on ppc32 as well,
approx. in the same order as ppc64 regarding device-tree manipulations.
The init sequences of ppc32 and ppc64 are getting closer, I'll unify
them in a later patch.

For now, you can force udbg to the scc using "sccdbg" or to btext using
"btextdbg" on powermacs. I'll implement a cleaner way of forcing udbg
output to something else than the autodetected OF output device in a
later patch.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 24 insertions, 24 deletions

diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c
index d843a6c9c6df..18ff770ea668 100644
--- a/drivers/macintosh/via-cuda.c
+++ b/drivers/macintosh/via-cuda.c
@@ -127,39 +127,34 @@ struct adb_driver via_cuda_driver = {
 #endif /* CONFIG_ADB */
 
 #ifdef CONFIG_PPC
-int __init
-find_via_cuda(void)
+int __init find_via_cuda(void)
 {
-    int err;
     struct adb_request req;
+    phys_addr_t taddr;
+    u32 *reg;
+    int err;
 
     if (vias != 0)
         return 1;
-    vias = find_devices("via-cuda");
+    vias = of_find_node_by_name(NULL, "via-cuda");
     if (vias == 0)
         return 0;
-    if (vias->next != 0)
-        printk(KERN_WARNING "Warning: only using 1st via-cuda\n");
-
-#if 0
-    { int i;
-
-    printk("find_via_cuda: node = %p, addrs =", vias->node);
-    for (i = 0; i < vias->n_addrs; ++i)
-        printk(" %x(%x)", vias->addrs[i].address, vias->addrs[i].size);
-    printk(", intrs =");
-    for (i = 0; i < vias->n_intrs; ++i)
-        printk(" %x", vias->intrs[i].line);
-    printk("\n"); }
-#endif
 
-    if (vias->n_addrs != 1 || vias->n_intrs != 1) {
-        printk(KERN_ERR "via-cuda: expecting 1 address (%d) and 1 interrupt (%d)\n",
-               vias->n_addrs, vias->n_intrs);
-        if (vias->n_addrs < 1 || vias->n_intrs < 1)
-            return 0;
+    reg = (u32 *)get_property(vias, "reg", NULL);
+    if (reg == NULL) {
+            printk(KERN_ERR "via-cuda: No \"reg\" property !\n");
+            goto fail;
+    }
+    taddr = of_translate_address(vias, reg);
+    if (taddr == 0) {
+            printk(KERN_ERR "via-cuda: Can't translate address !\n");
+            goto fail;
+    }
+    via = ioremap(taddr, 0x2000);
+    if (via == NULL) {
+            printk(KERN_ERR "via-cuda: Can't map address !\n");
+            goto fail;
     }
-    via = ioremap(vias->addrs->address, 0x2000);
 
     cuda_state = idle;
     sys_ctrler = SYS_CTRLER_CUDA;
@@ -185,6 +180,11 @@ find_via_cuda(void)
         cuda_poll();
 
     return 1;
+
+ fail:
+    of_node_put(vias);
+    vias = NULL;
+    return 0;
 }
 #endif /* CONFIG_PPC */