1 /* $NetBSD: xenfunc.c,v 1.3 2008/01/11 20:00:53 bouyer 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 #include <sys/param.h> 35 36 #include <uvm/uvm_extern.h> 37 38 #include <machine/intr.h> 39 #include <machine/vmparam.h> 40 #include <machine/pmap.h> 41 #include <xen/xen.h> 42 #include <xen/hypervisor.h> 43 //#include <xen/evtchn.h> 44 #include <xen/xenpmap.h> 45 #include <machine/pte.h> 46 47 #ifdef XENDEBUG_LOW 48 #define __PRINTK(x) printk x 49 #else 50 #define __PRINTK(x) 51 #endif 52 53 void xen_set_ldt(vaddr_t, uint32_t); 54 55 void 56 invlpg(vaddr_t addr) 57 { 58 int s = splvm(); 59 xpq_queue_invlpg(addr); 60 xpq_flush_queue(); 61 splx(s); 62 } 63 64 #ifndef __x86_64__ 65 void 66 lldt(u_short sel) 67 { 68 69 /* __PRINTK(("ldt %x\n", IDXSELN(sel))); */ 70 if (sel == GSEL(GLDT_SEL, SEL_KPL)) 71 xen_set_ldt((vaddr_t)ldt, NLDT); 72 else 73 xen_set_ldt(cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_base, 74 cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_entries); 75 } 76 #endif 77 78 void 79 ltr(u_short sel) 80 { 81 __PRINTK(("XXX ltr not supported\n")); 82 } 83 84 void 85 lcr0(u_int val) 86 { 87 __PRINTK(("XXX lcr0 not supported\n")); 88 } 89 90 u_int 91 rcr0(void) 92 { 93 __PRINTK(("XXX rcr0 not supported\n")); 94 return 0; 95 } 96 97 #ifndef __x86_64__ 98 void 99 lcr3(vaddr_t val) 100 { 101 int s = splvm(); 102 xpq_queue_pt_switch(xpmap_ptom_masked(val)); 103 xpq_flush_queue(); 104 splx(s); 105 } 106 #endif 107 108 void 109 tlbflush(void) 110 { 111 int s = splvm(); 112 xpq_queue_tlb_flush(); 113 xpq_flush_queue(); 114 splx(s); 115 } 116 117 void 118 tlbflushg(void) 119 { 120 tlbflush(); 121 } 122 123 vaddr_t 124 rdr6(void) 125 { 126 u_int val; 127 128 val = HYPERVISOR_get_debugreg(6); 129 return val; 130 } 131 132 void 133 ldr6(vaddr_t val) 134 { 135 136 HYPERVISOR_set_debugreg(6, val); 137 } 138 139 void 140 wbinvd(void) 141 { 142 143 xpq_flush_cache(); 144 } 145 146 vaddr_t 147 rcr2(void) 148 { 149 #ifdef XEN3 150 return HYPERVISOR_shared_info->vcpu_info[0].arch.cr2; /* XXX curcpu */ 151 #else 152 return 0; 153 #endif 154 } 155