1 /* $NetBSD: xenfunc.h,v 1.7 2005/05/31 11:58:54 yamt Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 2004 Christian Limpach. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Christian Limpach. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 35 #ifndef _XEN_XENFUNC_H_ 36 #define _XEN_XENFUNC_H_ 37 38 #include <machine/xen.h> 39 #include <machine/hypervisor.h> 40 #include <machine/evtchn.h> 41 #include <machine/xenpmap.h> 42 #include <machine/pte.h> 43 44 #ifdef XENDEBUG_LOW 45 #define __PRINTK(x) printk x 46 #else 47 #define __PRINTK(x) 48 #endif 49 50 void xen_set_ldt(vaddr_t, uint32_t); 51 void xen_update_descriptor(union descriptor *, union descriptor *); 52 53 static __inline void 54 invlpg(u_int addr) 55 { 56 int s = splvm(); 57 xpq_queue_invlpg(addr); 58 xpq_flush_queue(); 59 splx(s); 60 } 61 62 static __inline void 63 lldt(u_short sel) 64 { 65 66 /* __PRINTK(("ldt %x\n", IDXSELN(sel))); */ 67 if (sel == GSEL(GLDT_SEL, SEL_KPL)) 68 xen_set_ldt((vaddr_t)ldt, NLDT); 69 else 70 xen_set_ldt(cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_base, 71 cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_entries); 72 } 73 74 static __inline void 75 ltr(u_short sel) 76 { 77 __PRINTK(("XXX ltr not supported\n")); 78 } 79 80 static __inline void 81 lcr0(u_int val) 82 { 83 __PRINTK(("XXX lcr0 not supported\n")); 84 } 85 86 static __inline u_int 87 rcr0(void) 88 { 89 __PRINTK(("XXX rcr0 not supported\n")); 90 return 0; 91 } 92 93 #define lcr3(_v) _lcr3((_v), __FILE__, __LINE__) 94 static __inline void 95 _lcr3(u_int val, const char *file, int line) 96 { 97 int s = splvm(); 98 /* __PRINTK(("lcr3 %08x at %s:%d\n", val, file, line)); */ 99 xpq_queue_pt_switch(xpmap_ptom(val) & PG_FRAME); 100 xpq_flush_queue(); 101 splx(s); 102 } 103 104 static __inline void 105 tlbflush(void) 106 { 107 int s = splvm(); 108 xpq_queue_tlb_flush(); 109 xpq_flush_queue(); 110 splx(s); 111 } 112 113 #define tlbflushg() tlbflush() /* we don't use PGE */ 114 115 static __inline u_int 116 rdr6(void) 117 { 118 u_int val; 119 120 val = HYPERVISOR_get_debugreg(6); 121 return val; 122 } 123 124 static __inline void 125 ldr6(u_int val) 126 { 127 128 HYPERVISOR_set_debugreg(6, val); 129 } 130 131 #endif /* _XEN_XENFUNC_H_ */ 132