Return to xen.h CVS log

Up to [GnuMach] / Gnu-Mach / include / mach

Annotation of Gnu-Mach/include/mach/xen.h, revision 1.1

1.1     ! root        1: 
        !             2: /*
        !             3:  *  Copyright (C) 2006-2009, 2011 Free Software Foundation
        !             4:  *
        !             5:  * This program is free software ; you can redistribute it and/or modify
        !             6:  * it under the terms of the GNU General Public License as published by
        !             7:  * the Free Software Foundation ; either version 2 of the License, or
        !             8:  * (at your option) any later version.
        !             9:  *
        !            10:  * This program is distributed in the hope that it will be useful,
        !            11:  * but WITHOUT ANY WARRANTY ; without even the implied warranty of
        !            12:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
        !            13:  * GNU General Public License for more details.
        !            14:  *
        !            15:  * You should have received a copy of the GNU General Public License
        !            16:  * along with the program ; if not, write to the Free Software
        !            17:  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
        !            18:  */
        !            19: 
        !            20: #ifndef _MACH_XEN_H
        !            21: #define _MACH_XEN_H
        !            22: #ifdef MACH_XEN
        !            23: #include <sys/types.h>
        !            24: #include <xen/public/xen.h>
        !            25: #include <i386/vm_param.h>
        !            26: 
        !            27: extern struct start_info boot_info;
        !            28: 
        !            29: extern volatile struct shared_info hyp_shared_info;
        !            30: 
        !            31: #ifdef MACH_PV_PAGETABLES
        !            32: /* Memory translations */
        !            33: 
        !            34: /* pa are physical addresses, from 0 to size of memory */
        !            35: /* ma are machine addresses, i.e. _real_ hardware adresses */
        !            36: /* la are linear addresses, i.e. without segmentation */
        !            37: 
        !            38: /* This might also be useful out of Xen */
        !            39: #if VM_MIN_KERNEL_ADDRESS != LINEAR_MIN_KERNEL_ADDRESS
        !            40: extern unsigned long la_shift;
        !            41: #else
        !            42: #define la_shift LINEAR_MIN_KERNEL_ADDRESS
        !            43: #endif
        !            44: #define la_to_pa(a)            ((vm_offset_t)(((vm_offset_t)(a)) - la_shift))
        !            45: #define pa_to_la(a)            ((vm_offset_t)(((vm_offset_t)(a)) + la_shift))
        !            46: 
        !            47: #define kv_to_la(a)            pa_to_la(_kvtophys(a))
        !            48: #define la_to_kv(a)            phystokv(la_to_pa(a))
        !            49: 
        !            50: #ifdef MACH_PSEUDO_PHYS
        !            51: #if PAE
        !            52: #define PFN_LIST MACH2PHYS_VIRT_START_PAE
        !            53: #else
        !            54: #define PFN_LIST MACH2PHYS_VIRT_START_NONPAE
        !            55: #endif
        !            56: #if VM_MIN_KERNEL_ADDRESS != LINEAR_MIN_KERNEL_ADDRESS
        !            57: extern unsigned long *pfn_list;
        !            58: #else
        !            59: #define pfn_list ((unsigned long *) PFN_LIST)
        !            60: #endif
        !            61: #define mfn_to_pfn(n)          (pfn_list[n])
        !            62: 
        !            63: extern unsigned long *mfn_list;
        !            64: #define pfn_to_mfn(n)          (mfn_list[n])
        !            65: #else
        !            66: #define mfn_to_pfn(n)          (n)
        !            67: #define pfn_to_mfn(n)          (n)
        !            68: #endif /* MACH_PSEUDO_PHYS */
        !            69: 
        !            70: #define pa_to_mfn(a)           (pfn_to_mfn(atop(a)))
        !            71: #ifdef PAE
        !            72: #define pa_to_ma(a)            ({ vm_offset_t __a = (vm_offset_t) (a); (((pt_entry_t) pa_to_mfn(__a)) << PAGE_SHIFT) | (__a & PAGE_MASK); })
        !            73: #define ma_to_pa(a)            ({ pt_entry_t __a = (pt_entry_t) (a); (mfn_to_pfn(__a >> PAGE_SHIFT) << PAGE_SHIFT) | (__a & PAGE_MASK); })
        !            74: #else
        !            75: #define pa_to_ma(a)            ({ vm_offset_t __a = (vm_offset_t) (a); ptoa(pa_to_mfn(__a)) | (__a & PAGE_MASK); })
        !            76: #define ma_to_pa(a)            ({ vm_offset_t __a = (vm_offset_t) (a); (mfn_to_pfn(atop((__a))) << PAGE_SHIFT) | (__a & PAGE_MASK); })
        !            77: #endif
        !            78: 
        !            79: #define kv_to_mfn(a)           pa_to_mfn(_kvtophys(a))
        !            80: #define kv_to_ma(a)            pa_to_ma(_kvtophys(a))
        !            81: #else  /* MACH_PV_PAGETABLES */
        !            82: #define mfn_to_pfn(n)          (n)
        !            83: #define pfn_to_mfn(n)          (n)
        !            84: #endif /* MACH_PV_PAGETABLES */
        !            85: 
        !            86: #define mfn_to_kv(mfn)         phystokv(ptoa(mfn_to_pfn(mfn)))
        !            87: 
        !            88: #include <machine/xen.h>
        !            89: 
        !            90: #endif /* MACH_XEN */
        !            91: #endif /* _MACH_XEN_H */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.