提交 b552da87 编写于 作者: P Pavel Machek 提交者: Ingo Molnar

x86 iommu: add more documentation

Fix coding style in pci-dma_64.c and add stubs for documentation. I
hope someone fills the rest, I understand maybe off and soft...
Signed-off-by: NPavel Machek <pavel@suse.cz>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
上级 037cab07
......@@ -812,6 +812,19 @@ and is between 256 and 4096 characters. It is defined in the file
inttest= [IA64]
iommu= [x86]
off
force
noforce
biomerge
panic
nopanic
merge
nomerge
forcesac
soft
intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option
off
Disable intel iommu driver.
......
......@@ -232,32 +232,32 @@ static __init int iommu_setup(char *p)
return -EINVAL;
while (*p) {
if (!strncmp(p,"off",3))
if (!strncmp(p, "off", 3))
no_iommu = 1;
/* gart_parse_options has more force support */
if (!strncmp(p,"force",5))
if (!strncmp(p, "force", 5))
force_iommu = 1;
if (!strncmp(p,"noforce",7)) {
if (!strncmp(p, "noforce", 7)) {
iommu_merge = 0;
force_iommu = 0;
}
if (!strncmp(p, "biomerge",8)) {
if (!strncmp(p, "biomerge", 8)) {
iommu_bio_merge = 4096;
iommu_merge = 1;
force_iommu = 1;
}
if (!strncmp(p, "panic",5))
if (!strncmp(p, "panic", 5))
panic_on_overflow = 1;
if (!strncmp(p, "nopanic",7))
if (!strncmp(p, "nopanic", 7))
panic_on_overflow = 0;
if (!strncmp(p, "merge",5)) {
if (!strncmp(p, "merge", 5)) {
iommu_merge = 1;
force_iommu = 1;
}
if (!strncmp(p, "nomerge",7))
if (!strncmp(p, "nomerge", 7))
iommu_merge = 0;
if (!strncmp(p, "forcesac",8))
if (!strncmp(p, "forcesac", 8))
iommu_sac_force = 1;
if (!strncmp(p, "allowdac", 8))
forbid_dac = 0;
......@@ -265,7 +265,7 @@ static __init int iommu_setup(char *p)
forbid_dac = -1;
#ifdef CONFIG_SWIOTLB
if (!strncmp(p, "soft",4))
if (!strncmp(p, "soft", 4))
swiotlb = 1;
#endif
......
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