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[IA64] Add Variable Page Size and IA64 Support in Intel IOMMU

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The patch contains Intel IOMMU IA64 specific code. It defines new
machvec dig_vtd, hooks for IOMMU, DMAR table detection, cache line flush
function, etc.

For a generic kernel with CONFIG_DMAR=y, if Intel IOMMU is detected,
dig_vtd is used for machinve vector. Otherwise, kernel falls back to
dig machine vector. Kernel parameter "machvec=dig" or "intel_iommu=off"
can be used to force kernel to boot dig machine vector.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Fenghua Yu
2008-10-17 12:14:13 -07:00
committed by Tony Luck
parent 6bb7a93548
commit 62fdd7678a
23 changed files with 620 additions and 13 deletions
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16
arch/ia64/include/asm/iommu.h Normal file
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#ifndef _ASM_IA64_IOMMU_H
#define _ASM_IA64_IOMMU_H 1
#define cpu_has_x2apic 0
/* 10 seconds */
#define DMAR_OPERATION_TIMEOUT (((cycles_t) local_cpu_data->itc_freq)*10)
extern void pci_iommu_shutdown(void);
extern void no_iommu_init(void);
extern int force_iommu, no_iommu;
extern int iommu_detected;
extern void iommu_dma_init(void);
extern void machvec_init(const char *name);
extern int forbid_dac;
#endif