Commit 5c6af69a authored by Ivan Kokshaysky's avatar Ivan Kokshaysky Committed by Linus Torvalds
Browse files

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: default avatarIvan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent ebaf4fc1

include/asm-alpha/io.h

+10 −3
Original line number Diff line number Diff line
@@ -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.

CRA Git | Maintained and supported by SUSTech CRA and CCSE