diff options
| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2010-08-26 13:57:59 -0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2010-08-26 15:13:29 -0700 |
| commit | efa631c26d3bb1162b8f95008801db602217f52b (patch) | |
| tree | bc2b88fa3a08be9c96b663f37ed425a7b3be15f5 /arch/x86/include/asm/swiotlb.h | |
| parent | 5bef80a4b826b9cee1c6aec7ecc371ec395260cc (diff) | |
x86, swiotlb: Simplify SWIOTLB pci_swiotlb_detect routine.
In 'pci_swiotlb_detect' we used to do two different things:
a). If user provided 'iommu=soft' or 'swiotlb=force' we
would set swiotlb=1 and return 1 (and forcing pci-dma.c
to call pci_swiotlb_init() immediately).
b). If 4GB or more would be detected and if user did not specify
iommu=off, we would set 'swiotlb=1' and return whatever 'a)'
figured out.
We simplify this by splitting a) and b) in two different routines.
CC: Fujita Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
LKML-Reference: <1282845485-8991-5-git-send-email-konrad.wilk@oracle.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm/swiotlb.h')
| -rw-r--r-- | arch/x86/include/asm/swiotlb.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/x86/include/asm/swiotlb.h b/arch/x86/include/asm/swiotlb.h index 8085277e1b8b..977f1761a25d 100644 --- a/arch/x86/include/asm/swiotlb.h +++ b/arch/x86/include/asm/swiotlb.h @@ -5,17 +5,26 @@ #ifdef CONFIG_SWIOTLB extern int swiotlb; -extern int __init pci_swiotlb_detect(void); +extern int __init pci_swiotlb_detect_override(void); +extern int __init pci_swiotlb_detect_4gb(void); extern void __init pci_swiotlb_init(void); +extern void __init pci_swiotlb_late_init(void); #else #define swiotlb 0 -static inline int pci_swiotlb_detect(void) +static inline int pci_swiotlb_detect_override(void) +{ + return 0; +} +static inline int pci_swiotlb_detect_4gb(void) { return 0; } static inline void pci_swiotlb_init(void) { } +static inline void pci_swiotlb_late_init(void) +{ +} #endif static inline void dma_mark_clean(void *addr, size_t size) {} |