1 /* $NetBSD: xenfunc.c,v 1.5 2008/04/21 15:15:34 cegger 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/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: xenfunc.c,v 1.5 2008/04/21 15:15:34 cegger Exp $"); 36 37 #include <sys/param.h> 38 39 #include <uvm/uvm_extern.h> 40 41 #include <machine/intr.h> 42 #include <machine/vmparam.h> 43 #include <machine/pmap.h> 44 #include <xen/xen.h> 45 #include <xen/hypervisor.h> 46 //#include <xen/evtchn.h> 47 #include <xen/xenpmap.h> 48 #include <machine/pte.h> 49 50 #ifdef XENDEBUG_LOW 51 #define __PRINTK(x) printk x 52 #else 53 #define __PRINTK(x) 54 #endif 55 56 void xen_set_ldt(vaddr_t, uint32_t); 57 58 void 59 invlpg(vaddr_t addr) 60 { 61 int s = splvm(); 62 xpq_queue_invlpg(addr); 63 xpq_flush_queue(); 64 splx(s); 65 } 66 67 #ifndef __x86_64__ 68 void 69 lldt(u_short sel) 70 { 71 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(cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_base, 77 cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_entries); 78 } 79 #endif 80 81 void 82 ltr(u_short sel) 83 { 84 __PRINTK(("XXX ltr not supported\n")); 85 } 86 87 void 88 lcr0(u_int val) 89 { 90 __PRINTK(("XXX lcr0 not supported\n")); 91 } 92 93 u_int 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 xpq_flush_queue(); 107 splx(s); 108 } 109 #endif 110 111 void 112 tlbflush(void) 113 { 114 int s = splvm(); 115 xpq_queue_tlb_flush(); 116 xpq_flush_queue(); 117 splx(s); 118 } 119 120 void 121 tlbflushg(void) 122 { 123 tlbflush(); 124 } 125 126 vaddr_t 127 rdr6(void) 128 { 129 u_int val; 130 131 val = HYPERVISOR_get_debugreg(6); 132 return val; 133 } 134 135 void 136 ldr6(vaddr_t val) 137 { 138 139 HYPERVISOR_set_debugreg(6, val); 140 } 141 142 void 143 wbinvd(void) 144 { 145 146 xpq_flush_cache(); 147 } 148 149 vaddr_t 150 rcr2(void) 151 { 152 #ifdef XEN3 153 return curcpu()->ci_vcpu->arch.cr2; 154 #else 155 return 0; 156 #endif 157 } 158