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fix alpha ISA support 

isa_bus_to_virt() is still needed in a few places (lance.c, at least).  When
we switch the kernel to using -Werror-implicit-function-declaration, the lack
of isa_bus_to_virt() breaks alpha allmodconfig builds.

Add isa_bus_to_virt() and deprecate the ezisting ISA APIs, though it might be
better to define these functions as BUG(), since virt_to_bus/bus_to_virt just
do wrong things on a number of machines.

[akpm@linux-foundation.org: build fix]
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ivan Kokshaysky 2007-07-15 23:38:41 -07:00 committed by Linus Torvalds
parent ebaf4fc13e
commit 5c6af69abe
1 changed files with 10 additions and 3 deletions
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13
include/asm-alpha/io.h
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@ -4,6 +4,7 @@
#ifdef __KERNEL__
#include <linux/kernel.h>
#include <linux/mm.h>
#include <asm/compiler.h>
#include <asm/system.h>
#include <asm/pgtable.h>
@ -90,6 +91,11 @@ static inline void * phys_to_virt(unsigned long address)
#define page_to_phys(page) page_to_pa(page)
static inline dma_addr_t __deprecated isa_page_to_bus(struct page *page)
{
return page_to_phys(page);
}
/* This depends on working iommu. */
#define BIO_VMERGE_BOUNDARY (alpha_mv.mv_pci_tbi ? PAGE_SIZE : 0)
@ -102,12 +108,12 @@ static inline void * phys_to_virt(unsigned long address)
*
* Note that this only works for a limited range of kernel addresses,
* and very well may not span all memory. Consider this interface
* deprecated in favour of the mapping functions in <asm/pci.h>.
* deprecated in favour of the DMA-mapping API.
*/
extern unsigned long __direct_map_base;
extern unsigned long __direct_map_size;
static inline unsigned long virt_to_bus(void *address)
static inline unsigned long __deprecated virt_to_bus(void *address)
{
unsigned long phys = virt_to_phys(address);
unsigned long bus = phys + __direct_map_base;
@ -115,7 +121,7 @@ static inline unsigned long virt_to_bus(void *address)
}
#define isa_virt_to_bus virt_to_bus
static inline void *bus_to_virt(unsigned long address)
static inline void * __deprecated bus_to_virt(unsigned long address)
{
void *virt;
@ -126,6 +132,7 @@ static inline void *bus_to_virt(unsigned long address)
virt = phys_to_virt(address);
return (long)address <= 0 ? NULL : virt;
}
#define isa_bus_to_virt bus_to_virt
/*
* There are different chipsets to interface the Alpha CPUs to the world.