1 /* $NetBSD: xenfunc.c,v 1.9 2009/10/23 02:32:34 snj 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: xenfunc.c,v 1.9 2009/10/23 02:32:34 snj Exp $"); 31 32 #include <sys/param.h> 33 34 #include <uvm/uvm_extern.h> 35 36 #include <machine/intr.h> 37 #include <machine/vmparam.h> 38 #include <machine/pmap.h> 39 #include <xen/xen.h> 40 #include <xen/hypervisor.h> 41 //#include <xen/evtchn.h> 42 #include <xen/xenpmap.h> 43 #include <machine/pte.h> 44 45 #ifdef XENDEBUG_LOW 46 #define __PRINTK(x) printk x 47 #else 48 #define __PRINTK(x) 49 #endif 50 51 void xen_set_ldt(vaddr_t, uint32_t); 52 53 void 54 invlpg(vaddr_t addr) 55 { 56 int s = splvm(); 57 xpq_queue_invlpg(addr); 58 xpq_flush_queue(); 59 splx(s); 60 } 61 62 #ifndef __x86_64__ 63 void 64 lldt(u_short sel) 65 { 66 struct cpu_info *ci; 67 68 ci = curcpu(); 69 70 if (ci->ci_curldt == sel) 71 return; 72 /* __PRINTK(("ldt %x\n", IDXSELN(sel))); */ 73 if (sel == GSEL(GLDT_SEL, SEL_KPL)) 74 xen_set_ldt((vaddr_t)ldt, NLDT); 75 else 76 xen_set_ldt(ci->ci_gdt[IDXSELN(sel)].ld.ld_base, 77 ci->ci_gdt[IDXSELN(sel)].ld.ld_entries); 78 ci->ci_curldt = sel; 79 } 80 #endif 81 82 void 83 ltr(u_short sel) 84 { 85 __PRINTK(("XXX ltr not supported\n")); 86 } 87 88 void 89 lcr0(u_long val) 90 { 91 __PRINTK(("XXX lcr0 not supported\n")); 92 } 93 94 u_long 95 rcr0(void) 96 { 97 __PRINTK(("XXX rcr0 not supported\n")); 98 return 0; 99 } 100 101 #ifndef __x86_64__ 102 void 103 lcr3(vaddr_t val) 104 { 105 int s = splvm(); 106 xpq_queue_pt_switch(xpmap_ptom_masked(val)); 107 xpq_flush_queue(); 108 splx(s); 109 } 110 #endif 111 112 void 113 tlbflush(void) 114 { 115 int s = splvm(); 116 xpq_queue_tlb_flush(); 117 xpq_flush_queue(); 118 splx(s); 119 } 120 121 void 122 tlbflushg(void) 123 { 124 tlbflush(); 125 } 126 127 vaddr_t 128 rdr6(void) 129 { 130 u_int val; 131 132 val = HYPERVISOR_get_debugreg(6); 133 return val; 134 } 135 136 void 137 ldr6(vaddr_t val) 138 { 139 140 HYPERVISOR_set_debugreg(6, val); 141 } 142 143 void 144 wbinvd(void) 145 { 146 147 xpq_flush_cache(); 148 } 149 150 vaddr_t 151 rcr2(void) 152 { 153 return curcpu()->ci_vcpu->arch.cr2; 154 } 155