microblaze: Preliminary support for dma drivers

I found several problems for ll_temac driver and on system with WB.
This early fix should fix it. I will clean this patch before I will add
it to mainline

Signed-off-by: Michal Simek <monstr@monstr.eu>

2 files changed, 5 insertions, 10 deletions

diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h
index 06d804b15a51..32d621a56aee 100644
--- a/arch/microblaze/include/asm/io.h
+++ b/arch/microblaze/include/asm/io.h
@@ -140,9 +140,6 @@ static inline void writel(unsigned int v, volatile void __iomem *addr)
 #define virt_to_phys(addr)      ((unsigned long)__virt_to_phys(addr))
 #define virt_to_bus(addr)       ((unsigned long)__virt_to_phys(addr))
 
-#define __page_address(page) \
-                (PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT))
-#define page_to_phys(page)      virt_to_phys((void *)__page_address(page))
 #define page_to_bus(page)       (page_to_phys(page))
 #define bus_to_virt(addr)       (phys_to_virt(addr))
 
diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
index 9b66c0fa9a32..2dd1d04129e0 100644
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -62,12 +62,6 @@ extern unsigned int __page_offset;
 #define PAGE_OFFSET     CONFIG_KERNEL_START
 
 /*
- * MAP_NR -- given an address, calculate the index of the page struct which
- * points to the address's page.
- */
-#define MAP_NR(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> PAGE_SHIFT)
-
-/*
  * The basic type of a PTE - 32 bit physical addressing.
  */
 typedef unsigned long pte_basic_t;
@@ -154,7 +148,11 @@ extern int page_is_ram(unsigned long pfn);
 # define pfn_to_virt(pfn)       __va(pfn_to_phys((pfn)))
 
 #  ifdef CONFIG_MMU
-#  define virt_to_page(kaddr)   (mem_map +  MAP_NR(kaddr))
+
+#  define virt_to_page(kaddr)   (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT))
+#  define page_to_virt(page)   __va(page_to_pfn(page) << PAGE_SHIFT)
+#  define page_to_phys(page)     (page_to_pfn(page) << PAGE_SHIFT)
+
 #  else /* CONFIG_MMU */
 #  define virt_to_page(vaddr)   (pfn_to_page(virt_to_pfn(vaddr)))
 #  define page_to_virt(page)    (pfn_to_virt(page_to_pfn(page)))