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

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.