Isaku Yamahata | ed50bd6 | 2008-10-17 11:17:52 +0900 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * hypercall.h |
| 3 | * |
| 4 | * Linux-specific hypervisor handling. |
| 5 | * |
| 6 | * Copyright (c) 2002-2004, K A Fraser |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License version 2 |
| 10 | * as published by the Free Software Foundation; or, when distributed |
| 11 | * separately from the Linux kernel or incorporated into other |
| 12 | * software packages, subject to the following license: |
| 13 | * |
| 14 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 15 | * of this source file (the "Software"), to deal in the Software without |
| 16 | * restriction, including without limitation the rights to use, copy, modify, |
| 17 | * merge, publish, distribute, sublicense, and/or sell copies of the Software, |
| 18 | * and to permit persons to whom the Software is furnished to do so, subject to |
| 19 | * the following conditions: |
| 20 | * |
| 21 | * The above copyright notice and this permission notice shall be included in |
| 22 | * all copies or substantial portions of the Software. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 27 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 29 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 30 | * IN THE SOFTWARE. |
| 31 | */ |
| 32 | |
| 33 | #ifndef _ASM_IA64_XEN_HYPERCALL_H |
| 34 | #define _ASM_IA64_XEN_HYPERCALL_H |
| 35 | |
| 36 | #include <xen/interface/xen.h> |
| 37 | #include <xen/interface/physdev.h> |
| 38 | #include <xen/interface/sched.h> |
| 39 | #include <asm/xen/xcom_hcall.h> |
| 40 | struct xencomm_handle; |
| 41 | extern unsigned long __hypercall(unsigned long a1, unsigned long a2, |
| 42 | unsigned long a3, unsigned long a4, |
| 43 | unsigned long a5, unsigned long cmd); |
| 44 | |
| 45 | /* |
| 46 | * Assembler stubs for hyper-calls. |
| 47 | */ |
| 48 | |
| 49 | #define _hypercall0(type, name) \ |
| 50 | ({ \ |
| 51 | long __res; \ |
| 52 | __res = __hypercall(0, 0, 0, 0, 0, __HYPERVISOR_##name);\ |
| 53 | (type)__res; \ |
| 54 | }) |
| 55 | |
| 56 | #define _hypercall1(type, name, a1) \ |
| 57 | ({ \ |
| 58 | long __res; \ |
| 59 | __res = __hypercall((unsigned long)a1, \ |
| 60 | 0, 0, 0, 0, __HYPERVISOR_##name); \ |
| 61 | (type)__res; \ |
| 62 | }) |
| 63 | |
| 64 | #define _hypercall2(type, name, a1, a2) \ |
| 65 | ({ \ |
| 66 | long __res; \ |
| 67 | __res = __hypercall((unsigned long)a1, \ |
| 68 | (unsigned long)a2, \ |
| 69 | 0, 0, 0, __HYPERVISOR_##name); \ |
| 70 | (type)__res; \ |
| 71 | }) |
| 72 | |
| 73 | #define _hypercall3(type, name, a1, a2, a3) \ |
| 74 | ({ \ |
| 75 | long __res; \ |
| 76 | __res = __hypercall((unsigned long)a1, \ |
| 77 | (unsigned long)a2, \ |
| 78 | (unsigned long)a3, \ |
| 79 | 0, 0, __HYPERVISOR_##name); \ |
| 80 | (type)__res; \ |
| 81 | }) |
| 82 | |
| 83 | #define _hypercall4(type, name, a1, a2, a3, a4) \ |
| 84 | ({ \ |
| 85 | long __res; \ |
| 86 | __res = __hypercall((unsigned long)a1, \ |
| 87 | (unsigned long)a2, \ |
| 88 | (unsigned long)a3, \ |
| 89 | (unsigned long)a4, \ |
| 90 | 0, __HYPERVISOR_##name); \ |
| 91 | (type)__res; \ |
| 92 | }) |
| 93 | |
| 94 | #define _hypercall5(type, name, a1, a2, a3, a4, a5) \ |
| 95 | ({ \ |
| 96 | long __res; \ |
| 97 | __res = __hypercall((unsigned long)a1, \ |
| 98 | (unsigned long)a2, \ |
| 99 | (unsigned long)a3, \ |
| 100 | (unsigned long)a4, \ |
| 101 | (unsigned long)a5, \ |
| 102 | __HYPERVISOR_##name); \ |
| 103 | (type)__res; \ |
| 104 | }) |
| 105 | |
| 106 | |
| 107 | static inline int |
| 108 | xencomm_arch_hypercall_sched_op(int cmd, struct xencomm_handle *arg) |
| 109 | { |
Ian Campbell | 44e6976 | 2011-03-01 20:05:49 +0000 | [diff] [blame] | 110 | return _hypercall2(int, sched_op, cmd, arg); |
Isaku Yamahata | ed50bd6 | 2008-10-17 11:17:52 +0900 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | static inline long |
| 114 | HYPERVISOR_set_timer_op(u64 timeout) |
| 115 | { |
| 116 | unsigned long timeout_hi = (unsigned long)(timeout >> 32); |
| 117 | unsigned long timeout_lo = (unsigned long)timeout; |
| 118 | return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi); |
| 119 | } |
| 120 | |
| 121 | static inline int |
| 122 | xencomm_arch_hypercall_multicall(struct xencomm_handle *call_list, |
| 123 | int nr_calls) |
| 124 | { |
| 125 | return _hypercall2(int, multicall, call_list, nr_calls); |
| 126 | } |
| 127 | |
| 128 | static inline int |
| 129 | xencomm_arch_hypercall_memory_op(unsigned int cmd, struct xencomm_handle *arg) |
| 130 | { |
| 131 | return _hypercall2(int, memory_op, cmd, arg); |
| 132 | } |
| 133 | |
| 134 | static inline int |
| 135 | xencomm_arch_hypercall_event_channel_op(int cmd, struct xencomm_handle *arg) |
| 136 | { |
| 137 | return _hypercall2(int, event_channel_op, cmd, arg); |
| 138 | } |
| 139 | |
| 140 | static inline int |
| 141 | xencomm_arch_hypercall_xen_version(int cmd, struct xencomm_handle *arg) |
| 142 | { |
| 143 | return _hypercall2(int, xen_version, cmd, arg); |
| 144 | } |
| 145 | |
| 146 | static inline int |
| 147 | xencomm_arch_hypercall_console_io(int cmd, int count, |
| 148 | struct xencomm_handle *str) |
| 149 | { |
| 150 | return _hypercall3(int, console_io, cmd, count, str); |
| 151 | } |
| 152 | |
| 153 | static inline int |
| 154 | xencomm_arch_hypercall_physdev_op(int cmd, struct xencomm_handle *arg) |
| 155 | { |
| 156 | return _hypercall2(int, physdev_op, cmd, arg); |
| 157 | } |
| 158 | |
| 159 | static inline int |
| 160 | xencomm_arch_hypercall_grant_table_op(unsigned int cmd, |
| 161 | struct xencomm_handle *uop, |
| 162 | unsigned int count) |
| 163 | { |
| 164 | return _hypercall3(int, grant_table_op, cmd, uop, count); |
| 165 | } |
| 166 | |
| 167 | int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count); |
| 168 | |
| 169 | extern int xencomm_arch_hypercall_suspend(struct xencomm_handle *arg); |
| 170 | |
| 171 | static inline int |
| 172 | xencomm_arch_hypercall_callback_op(int cmd, struct xencomm_handle *arg) |
| 173 | { |
| 174 | return _hypercall2(int, callback_op, cmd, arg); |
| 175 | } |
| 176 | |
| 177 | static inline long |
| 178 | xencomm_arch_hypercall_vcpu_op(int cmd, int cpu, void *arg) |
| 179 | { |
| 180 | return _hypercall3(long, vcpu_op, cmd, cpu, arg); |
| 181 | } |
| 182 | |
| 183 | static inline int |
| 184 | HYPERVISOR_physdev_op(int cmd, void *arg) |
| 185 | { |
| 186 | switch (cmd) { |
| 187 | case PHYSDEVOP_eoi: |
| 188 | return _hypercall1(int, ia64_fast_eoi, |
| 189 | ((struct physdev_eoi *)arg)->irq); |
| 190 | default: |
| 191 | return xencomm_hypercall_physdev_op(cmd, arg); |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | static inline long |
| 196 | xencomm_arch_hypercall_opt_feature(struct xencomm_handle *arg) |
| 197 | { |
| 198 | return _hypercall1(long, opt_feature, arg); |
| 199 | } |
| 200 | |
| 201 | /* for balloon driver */ |
| 202 | #define HYPERVISOR_update_va_mapping(va, new_val, flags) (0) |
| 203 | |
| 204 | /* Use xencomm to do hypercalls. */ |
| 205 | #define HYPERVISOR_sched_op xencomm_hypercall_sched_op |
| 206 | #define HYPERVISOR_event_channel_op xencomm_hypercall_event_channel_op |
| 207 | #define HYPERVISOR_callback_op xencomm_hypercall_callback_op |
| 208 | #define HYPERVISOR_multicall xencomm_hypercall_multicall |
| 209 | #define HYPERVISOR_xen_version xencomm_hypercall_xen_version |
| 210 | #define HYPERVISOR_console_io xencomm_hypercall_console_io |
| 211 | #define HYPERVISOR_memory_op xencomm_hypercall_memory_op |
| 212 | #define HYPERVISOR_suspend xencomm_hypercall_suspend |
| 213 | #define HYPERVISOR_vcpu_op xencomm_hypercall_vcpu_op |
| 214 | #define HYPERVISOR_opt_feature xencomm_hypercall_opt_feature |
| 215 | |
| 216 | /* to compile gnttab_copy_grant_page() in drivers/xen/core/gnttab.c */ |
| 217 | #define HYPERVISOR_mmu_update(req, count, success_count, domid) ({ BUG(); 0; }) |
| 218 | |
| 219 | static inline int |
| 220 | HYPERVISOR_shutdown( |
| 221 | unsigned int reason) |
| 222 | { |
| 223 | struct sched_shutdown sched_shutdown = { |
| 224 | .reason = reason |
| 225 | }; |
| 226 | |
| 227 | int rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown); |
| 228 | |
| 229 | return rc; |
| 230 | } |
| 231 | |
| 232 | /* for netfront.c, netback.c */ |
| 233 | #define MULTI_UVMFLAGS_INDEX 0 /* XXX any value */ |
| 234 | |
| 235 | static inline void |
| 236 | MULTI_update_va_mapping( |
| 237 | struct multicall_entry *mcl, unsigned long va, |
| 238 | pte_t new_val, unsigned long flags) |
| 239 | { |
| 240 | mcl->op = __HYPERVISOR_update_va_mapping; |
| 241 | mcl->result = 0; |
| 242 | } |
| 243 | |
| 244 | static inline void |
| 245 | MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd, |
| 246 | void *uop, unsigned int count) |
| 247 | { |
| 248 | mcl->op = __HYPERVISOR_grant_table_op; |
| 249 | mcl->args[0] = cmd; |
| 250 | mcl->args[1] = (unsigned long)uop; |
| 251 | mcl->args[2] = count; |
| 252 | } |
| 253 | |
| 254 | static inline void |
| 255 | MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req, |
| 256 | int count, int *success_count, domid_t domid) |
| 257 | { |
| 258 | mcl->op = __HYPERVISOR_mmu_update; |
| 259 | mcl->args[0] = (unsigned long)req; |
| 260 | mcl->args[1] = count; |
| 261 | mcl->args[2] = (unsigned long)success_count; |
| 262 | mcl->args[3] = domid; |
| 263 | } |
| 264 | |
| 265 | #endif /* _ASM_IA64_XEN_HYPERCALL_H */ |