1 /* $NetBSD: xenfunc.h,v 1.2 2004/05/07 14:01:33 cl 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/xenpmap.h> 41 #include <machine/pte.h> 42 43 #ifdef XENDEBUG_LOW 44 #define __PRINTK(x) printk x 45 #else 46 #define __PRINTK(x) 47 #endif 48 49 void xen_set_ldt(vaddr_t, uint32_t); 50 void xen_update_descriptor(union descriptor *, union descriptor *); 51 52 static __inline void 53 invlpg(u_int addr) 54 { 55 xpq_queue_invlpg(addr); 56 xpq_flush_queue(); 57 } 58 59 static __inline void 60 lldt(u_short sel) 61 { 62 63 /* __PRINTK(("ldt %x\n", IDXSELN(sel))); */ 64 if (sel == GSEL(GLDT_SEL, SEL_KPL)) 65 xen_set_ldt((vaddr_t)ldt, NLDT); 66 else 67 xen_set_ldt(cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_base, 68 cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_entries); 69 } 70 71 static __inline void 72 ltr(u_short sel) 73 { 74 __PRINTK(("XXX ltr not supported\n")); 75 } 76 77 static __inline void 78 lcr0(u_int val) 79 { 80 __PRINTK(("XXX lcr0 not supported\n")); 81 } 82 83 static __inline u_int 84 rcr0(void) 85 { 86 __PRINTK(("XXX rcr0 not supported\n")); 87 return 0; 88 } 89 90 #define lcr3(_v) _lcr3((_v), __FILE__, __LINE__) 91 static __inline void 92 _lcr3(u_int val, char *file, int line) 93 { 94 /* __PRINTK(("lcr3 %08x at %s:%d\n", val, file, line)); */ 95 xpq_queue_pt_switch(xpmap_ptom(val) & PG_FRAME); 96 xpq_flush_queue(); 97 } 98 99 static __inline void 100 tlbflush(void) 101 { 102 xpq_queue_tlb_flush(); 103 xpq_flush_queue(); 104 } 105 106 static __inline u_int 107 rdr6(void) 108 { 109 u_int val; 110 111 val = HYPERVISOR_get_debugreg(6); 112 return val; 113 } 114 115 static __inline void 116 ldr6(u_int val) 117 { 118 119 HYPERVISOR_set_debugreg(6, val); 120 } 121 122 static __inline void 123 disable_intr(void) 124 { 125 __cli(); 126 } 127 128 static __inline void 129 enable_intr(void) 130 { 131 __sti(); 132 } 133 134 #endif /* _XEN_XENFUNC_H_ */ 135