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#ifndef _ASM_IA64_MADDR_H
#define _ASM_IA64_MADDR_H
#include <linux/kernel.h>
#include <asm/hypervisor.h>
#include <xen/features.h>
#include <xen/interface/xen.h>
#ifdef CONFIG_XEN
#define INVALID_P2M_ENTRY (~0UL)
/* XXX xen page size != page size */
static inline unsigned long
pfn_to_mfn_for_dma(unsigned long pfn)
{
unsigned long mfn;
mfn = HYPERVISOR_phystomach(pfn);
BUG_ON(mfn == 0); // XXX
BUG_ON(mfn == INVALID_P2M_ENTRY); // XXX
BUG_ON(mfn == INVALID_MFN);
return mfn;
}
static inline unsigned long
phys_to_machine_for_dma(unsigned long phys)
{
unsigned long machine =
pfn_to_mfn_for_dma(phys >> PAGE_SHIFT) << PAGE_SHIFT;
machine |= (phys & ~PAGE_MASK);
return machine;
}
static inline unsigned long
mfn_to_pfn_for_dma(unsigned long mfn)
{
unsigned long pfn;
pfn = HYPERVISOR_machtophys(mfn);
BUG_ON(pfn == 0);
//BUG_ON(pfn == INVALID_M2P_ENTRY);
return pfn;
}
static inline unsigned long
machine_to_phys_for_dma(unsigned long machine)
{
unsigned long phys =
mfn_to_pfn_for_dma(machine >> PAGE_SHIFT) << PAGE_SHIFT;
phys |= (machine & ~PAGE_MASK);
return phys;
}
static inline unsigned long
mfn_to_local_pfn(unsigned long mfn)
{
extern unsigned long max_mapnr;
unsigned long pfn = mfn_to_pfn_for_dma(mfn);
if (!pfn_valid(pfn))
return INVALID_P2M_ENTRY;
return pfn;
}
#else /* !CONFIG_XEN */
#define pfn_to_mfn_for_dma(pfn) (pfn)
#define mfn_to_pfn_for_dma(mfn) (mfn)
#define phys_to_machine_for_dma(phys) (phys)
#define machine_to_phys_for_dma(machine) (machine)
#define mfn_to_local_pfn(mfn) (mfn)
#endif /* !CONFIG_XEN */
/* XXX to compile set_phys_to_machine(vaddr, FOREIGN_FRAME(m)) */
#define FOREIGN_FRAME(m) (INVALID_P2M_ENTRY)
#define mfn_to_pfn(mfn) (mfn)
#define pfn_to_mfn(pfn) (pfn)
#define mfn_to_virt(mfn) (__va((mfn) << PAGE_SHIFT))
#define virt_to_mfn(virt) (__pa(virt) >> PAGE_SHIFT)
#define virt_to_machine(virt) __pa(virt) // for tpmfront.c
#define set_phys_to_machine(pfn, mfn) do { } while (0)
#ifdef CONFIG_VMX_GUEST
extern void xen_machphys_update(unsigned long mfn, unsigned long pfn);
#else /* CONFIG_VMX_GUEST */
#define xen_machphys_update(mfn, pfn) do { } while (0)
#endif /* CONFIG_VMX_GUEST */
typedef unsigned long maddr_t; // to compile netback, netfront
#endif /* _ASM_IA64_MADDR_H */
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