1 /* $NetBSD: xenfunc.c,v 1.11 2010/07/24 00:45:56 jym 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 1.11 2010/07/24 00:45:56 jym 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 splx(s); 59 } 60 61 void 62 lldt(u_short sel) 63 { 64 #ifndef __x86_64__ 65 struct cpu_info *ci; 66 67 ci = curcpu(); 68 69 if (ci->ci_curldt == sel) 70 return; 71 /* __PRINTK(("ldt %x\n", IDXSELN(sel))); */ 72 if (sel == GSEL(GLDT_SEL, SEL_KPL)) 73 xen_set_ldt((vaddr_t)ldt, NLDT); 74 else 75 xen_set_ldt(ci->ci_gdt[IDXSELN(sel)].ld.ld_base, 76 ci->ci_gdt[IDXSELN(sel)].ld.ld_entries); 77 ci->ci_curldt = sel; 78 #endif 79 } 80 81 void 82 ltr(u_short sel) 83 { 84 __PRINTK(("XXX ltr not supported\n")); 85 } 86 87 void 88 lcr0(u_long val) 89 { 90 __PRINTK(("XXX lcr0 not supported\n")); 91 } 92 93 u_long 94 rcr0(void) 95 { 96 __PRINTK(("XXX rcr0 not supported\n")); 97 return 0; 98 } 99 100 #ifndef __x86_64__ 101 void 102 lcr3(vaddr_t val) 103 { 104 int s = splvm(); 105 xpq_queue_pt_switch(xpmap_ptom_masked(val)); 106 splx(s); 107 } 108 #endif 109 110 void 111 tlbflush(void) 112 { 113 int s = splvm(); 114 xpq_queue_tlb_flush(); 115 splx(s); 116 } 117 118 void 119 tlbflushg(void) 120 { 121 tlbflush(); 122 } 123 124 vaddr_t 125 rdr6(void) 126 { 127 u_int val; 128 129 val = HYPERVISOR_get_debugreg(6); 130 return val; 131 } 132 133 void 134 ldr6(vaddr_t val) 135 { 136 137 HYPERVISOR_set_debugreg(6, val); 138 } 139 140 void 141 wbinvd(void) 142 { 143 144 xpq_flush_cache(); 145 } 146 147 vaddr_t 148 rcr2(void) 149 { 150 return curcpu()->ci_vcpu->arch.cr2; 151 } 152