Thread (3 messages) 3 messages, 3 authors, 2003-09-08

virt_to_phys() on 440

flat view

From: Brian Kuschak <hidden>
Date: 2003-09-08 21:36:38

I think the virt_to_phys() function is incorrect for
PPC440.  It should call iopa for all 4xx, not only the
405.  By chance, it happens to work currently if the
address is in SDRAM, but is always incorrect for
ioremapped addresses.  virt_to_bus() does the right
thing.

Also, to be correct, shouldn't this function return a
phys_addr_t rather than an unsigned long, as the
physical address is >32 bits on 44x?

Regards,
Brian
--- include/asm/io.h.new   Thu Aug 28 14:30:33 2003
+++ include/asm/io.h    Mon Sep  8 14:21:08 2003
@@ -309,7 +309,7 @@
  */
 extern inline unsigned long virt_to_phys(volatile
void * address)
 {
-#if defined(CONFIG_APUS) || defined(CONFIG_8xx) ||
defined(CONFIG_40x)
+#if defined(CONFIG_APUS) || defined(CONFIG_8xx) ||
defined(CONFIG_4xx)
        return iopa ((unsigned long) address);
 #else
        return (unsigned long) address - KERNELBASE;


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help