| 1 | /* $NetBSD: xenfunc.c,v 1.13 2011/11/06 11:40:47 cherry 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 1.13 2011/11/06 11:40:47 cherry 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 | panic("XXX ltr not supported\n" ); |
| 85 | } |
| 86 | |
| 87 | void |
| 88 | lcr0(u_long val) |
| 89 | { |
| 90 | panic("XXX lcr0 not supported\n" ); |
| 91 | } |
| 92 | |
| 93 | u_long |
| 94 | rcr0(void) |
| 95 | { |
| 96 | /* XXX: handle X86_CR0_TS ? */ |
| 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 | |