This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-ia64 / maddr.h

diff --git a/include/asm-ia64/maddr.h b/include/asm-ia64/maddr.h
new file mode 100644 (file)
index 0000000..55c6f94
--- /dev/null
+++ b/include/asm-ia64/maddr.h
@@ -0,0 +1,92 @@
+#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 */