diff options
| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-27 08:49:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-27 08:49:07 -0700 |
| commit | b98adfccdf5f8dd34ae56a2d5adbe2c030bd4674 (patch) | |
| tree | 1807a029520f550dd4f90c95ad0063bceb00d645 /arch/sh/mm/ioremap.c | |
| parent | ba21fe71725f94792330ebc3034ef2b35a36276f (diff) | |
| parent | 33573c0e3243aaa38b6ad96942de85a1b713c2ff (diff) | |
Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (108 commits)
sh: Fix occasional flush_cache_4096() stack corruption.
sh: Calculate shm alignment at runtime.
sh: dma-mapping compile fixes.
sh: Initial vsyscall page support.
sh: Clean up PAGE_SIZE definition for assembly use.
sh: Selective flush_cache_mm() flushing.
sh: More intelligent entry_mask/way_size calculation.
sh: Support for L2 cache on newer SH-4A CPUs.
sh: Update kexec support for API changes.
sh: Optimized readsl()/writesl() support.
sh: Report movli.l/movco.l capabilities.
sh: CPU flags in AT_HWCAP in ELF auxvt.
sh: Add support for 4K stacks.
sh: Enable /proc/kcore support.
sh: stack debugging support.
sh: select CONFIG_EMBEDDED.
sh: machvec rework.
sh: Solution Engine SH7343 board support.
sh: SH7710VoIPGW board support.
sh: Enable verbose BUG() support.
...
Diffstat (limited to 'arch/sh/mm/ioremap.c')
| -rw-r--r-- | arch/sh/mm/ioremap.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/sh/mm/ioremap.c b/arch/sh/mm/ioremap.c index 96fa4a999e2..a9fe80cfc23 100644 --- a/arch/sh/mm/ioremap.c +++ b/arch/sh/mm/ioremap.c @@ -15,6 +15,7 @@ #include <linux/vmalloc.h> #include <linux/module.h> #include <linux/mm.h> +#include <linux/pci.h> #include <asm/io.h> #include <asm/page.h> #include <asm/pgalloc.h> @@ -135,6 +136,20 @@ void __iomem *__ioremap(unsigned long phys_addr, unsigned long size, return (void __iomem *)phys_to_virt(phys_addr); /* + * If we're on an SH7751 or SH7780 PCI controller, PCI memory is + * mapped at the end of the address space (typically 0xfd000000) + * in a non-translatable area, so mapping through page tables for + * this area is not only pointless, but also fundamentally + * broken. Just return the physical address instead. + * + * For boards that map a small PCI memory aperture somewhere in + * P1/P2 space, ioremap() will already do the right thing, + * and we'll never get this far. + */ + if (is_pci_memaddr(phys_addr) && is_pci_memaddr(last_addr)) + return (void __iomem *)phys_addr; + + /* * Don't allow anybody to remap normal RAM that we're using.. */ if (phys_addr < virt_to_phys(high_memory)) @@ -192,7 +207,7 @@ void __iounmap(void __iomem *addr) unsigned long vaddr = (unsigned long __force)addr; struct vm_struct *p; - if (PXSEG(vaddr) < P3SEG) + if (PXSEG(vaddr) < P3SEG || is_pci_memaddr(vaddr)) return; #ifdef CONFIG_32BIT |