Messages in this thread Patch in this message | | | From | FUJITA Tomonori <> | Subject | [PATCH 04/10] amd_iommu: convert amd_iommu_detect to use iommu_init hook | Date | Wed, 28 Oct 2009 15:47:38 +0900 |
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This changes amd_iommu_detect() to set amd_iommu_init to iommu_init hook if amd_iommu_detect() finds the AMD IOMMU.
We can kill the code to check if we found the IOMMU in amd_iommu_init() since amd_iommu_detect() sets amd_iommu_init() only when it found the IOMMU.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> --- arch/x86/include/asm/amd_iommu.h | 2 -- arch/x86/kernel/amd_iommu_init.c | 17 +++-------------- arch/x86/kernel/pci-dma.c | 2 -- 3 files changed, 3 insertions(+), 18 deletions(-)
diff --git a/arch/x86/include/asm/amd_iommu.h b/arch/x86/include/asm/amd_iommu.h index ac95995..240617e 100644 --- a/arch/x86/include/asm/amd_iommu.h +++ b/arch/x86/include/asm/amd_iommu.h @@ -23,7 +23,6 @@ #include <linux/irqreturn.h> #ifdef CONFIG_AMD_IOMMU -extern int amd_iommu_init(void); extern int amd_iommu_init_dma_ops(void); extern int amd_iommu_init_passthrough(void); extern void amd_iommu_detect(void); @@ -32,7 +31,6 @@ extern void amd_iommu_flush_all_domains(void); extern void amd_iommu_flush_all_devices(void); extern void amd_iommu_shutdown(void); #else -static inline int amd_iommu_init(void) { return -ENODEV; } static inline void amd_iommu_detect(void) { } static inline void amd_iommu_shutdown(void) { } #endif diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index b4b61d4..52bf59f 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -29,6 +29,7 @@ #include <asm/amd_iommu.h> #include <asm/iommu.h> #include <asm/gart.h> +#include <asm/x86_init.h> /* * definitions for the ACPI scanning code @@ -1154,19 +1155,10 @@ static struct sys_device device_amd_iommu = { * functions. Finally it prints some information about AMD IOMMUs and * the driver state and enables the hardware. */ -int __init amd_iommu_init(void) +static int __init amd_iommu_init(void) { int i, ret = 0; - - if (no_iommu) { - printk(KERN_INFO "AMD-Vi disabled by kernel command line\n"); - return 0; - } - - if (!amd_iommu_detected) - return -ENODEV; - /* * First parse ACPI tables to find the largest Bus/Dev/Func * we need to handle. Upon this information the shared data @@ -1326,10 +1318,7 @@ void __init amd_iommu_detect(void) if (acpi_table_parse("IVRS", early_amd_iommu_detect) == 0) { iommu_detected = 1; amd_iommu_detected = 1; -#ifdef CONFIG_GART_IOMMU - gart_iommu_aperture_disabled = 1; - gart_iommu_aperture = 0; -#endif + x86_init.iommu.iommu_init = amd_iommu_init; } } diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 9830f12..6abb8c2 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -296,8 +296,6 @@ static int __init pci_iommu_init(void) intel_iommu_init(); - amd_iommu_init(); - no_iommu_init(); return 0; } -- 1.5.6.5
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