diff options
Diffstat (limited to 'arch/sparc64/kernel/ioport.c')
| -rw-r--r-- | arch/sparc64/kernel/ioport.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/sparc64/kernel/ioport.c b/arch/sparc64/kernel/ioport.c index 7d1580b39..7ae12df11 100644 --- a/arch/sparc64/kernel/ioport.c +++ b/arch/sparc64/kernel/ioport.c @@ -1,4 +1,4 @@ -/* $Id: ioport.c,v 1.11 1997/07/22 06:14:04 davem Exp $ +/* $Id: ioport.c,v 1.13 1997/08/18 01:20:22 davem Exp $ * ioport.c: Simple io mapping allocator. * * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu) @@ -45,7 +45,7 @@ void *sparc_alloc_io (u32 address, void *virtual, int len, char *name, u32 bus_type, int rdonly) { unsigned long vaddr, base_address; - unsigned long addr = ((unsigned long) address) + (((unsigned long) bus_type) << 32); + unsigned long addr = ((unsigned long)address) + (((unsigned long)bus_type)<<32); unsigned long offset = (addr & (~PAGE_MASK)); if (virtual) { @@ -64,7 +64,12 @@ void *sparc_alloc_io (u32 address, void *virtual, int len, char *name, /* Tell Linux resource manager about the mapping */ request_region ((vaddr | offset), len, name); } else { - return __va(addr); + unsigned long vaddr = (unsigned long) __va(addr); + + if(!check_region(vaddr, len)) + request_region(vaddr, len, name); + + return (void *) vaddr; } base_address = vaddr; @@ -83,11 +88,11 @@ void sparc_free_io (void *virtual, int len) unsigned long vaddr = (unsigned long) virtual & PAGE_MASK; unsigned long plen = (((unsigned long)virtual & ~PAGE_MASK) + len + PAGE_SIZE-1) & PAGE_MASK; + release_region(vaddr, plen); + if (((unsigned long)virtual) >= PAGE_OFFSET + 0x10000000000UL) return; - release_region(vaddr, plen); - for (; plen != 0;) { plen -= PAGE_SIZE; unmapioaddr(vaddr + plen); |