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Diffstat (limited to 'include/asm-x86/xen/hypercall.h')
| -rw-r--r-- | include/asm-x86/xen/hypercall.h | 527 |
1 files changed, 0 insertions, 527 deletions
diff --git a/include/asm-x86/xen/hypercall.h b/include/asm-x86/xen/hypercall.h deleted file mode 100644 index 44f4259bee3f..000000000000 --- a/include/asm-x86/xen/hypercall.h +++ /dev/null @@ -1,527 +0,0 @@ -/****************************************************************************** - * hypercall.h - * - * Linux-specific hypervisor handling. - * - * Copyright (c) 2002-2004, K A Fraser - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation; or, when distributed - * separately from the Linux kernel or incorporated into other - * software packages, subject to the following license: - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this source file (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, modify, - * merge, publish, distribute, sublicense, and/or sell copies of the Software, - * and to permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - */ - -#ifndef ASM_X86__XEN__HYPERCALL_H -#define ASM_X86__XEN__HYPERCALL_H - -#include <linux/errno.h> -#include <linux/string.h> - -#include <xen/interface/xen.h> -#include <xen/interface/sched.h> -#include <xen/interface/physdev.h> - -/* - * The hypercall asms have to meet several constraints: - * - Work on 32- and 64-bit. - * The two architectures put their arguments in different sets of - * registers. - * - * - Work around asm syntax quirks - * It isn't possible to specify one of the rNN registers in a - * constraint, so we use explicit register variables to get the - * args into the right place. - * - * - Mark all registers as potentially clobbered - * Even unused parameters can be clobbered by the hypervisor, so we - * need to make sure gcc knows it. - * - * - Avoid compiler bugs. - * This is the tricky part. Because x86_32 has such a constrained - * register set, gcc versions below 4.3 have trouble generating - * code when all the arg registers and memory are trashed by the - * asm. There are syntactically simpler ways of achieving the - * semantics below, but they cause the compiler to crash. - * - * The only combination I found which works is: - * - assign the __argX variables first - * - list all actually used parameters as "+r" (__argX) - * - clobber the rest - * - * The result certainly isn't pretty, and it really shows up cpp's - * weakness as as macro language. Sorry. (But let's just give thanks - * there aren't more than 5 arguments...) - */ - -extern struct { char _entry[32]; } hypercall_page[]; - -#define __HYPERCALL "call hypercall_page+%c[offset]" -#define __HYPERCALL_ENTRY(x) \ - [offset] "i" (__HYPERVISOR_##x * sizeof(hypercall_page[0])) - -#ifdef CONFIG_X86_32 -#define __HYPERCALL_RETREG "eax" -#define __HYPERCALL_ARG1REG "ebx" -#define __HYPERCALL_ARG2REG "ecx" -#define __HYPERCALL_ARG3REG "edx" -#define __HYPERCALL_ARG4REG "esi" -#define __HYPERCALL_ARG5REG "edi" -#else -#define __HYPERCALL_RETREG "rax" -#define __HYPERCALL_ARG1REG "rdi" -#define __HYPERCALL_ARG2REG "rsi" -#define __HYPERCALL_ARG3REG "rdx" -#define __HYPERCALL_ARG4REG "r10" -#define __HYPERCALL_ARG5REG "r8" -#endif - -#define __HYPERCALL_DECLS \ - register unsigned long __res asm(__HYPERCALL_RETREG); \ - register unsigned long __arg1 asm(__HYPERCALL_ARG1REG) = __arg1; \ - register unsigned long __arg2 asm(__HYPERCALL_ARG2REG) = __arg2; \ - register unsigned long __arg3 asm(__HYPERCALL_ARG3REG) = __arg3; \ - register unsigned long __arg4 asm(__HYPERCALL_ARG4REG) = __arg4; \ - register unsigned long __arg5 asm(__HYPERCALL_ARG5REG) = __arg5; - -#define __HYPERCALL_0PARAM "=r" (__res) -#define __HYPERCALL_1PARAM __HYPERCALL_0PARAM, "+r" (__arg1) -#define __HYPERCALL_2PARAM __HYPERCALL_1PARAM, "+r" (__arg2) -#define __HYPERCALL_3PARAM __HYPERCALL_2PARAM, "+r" (__arg3) -#define __HYPERCALL_4PARAM __HYPERCALL_3PARAM, "+r" (__arg4) -#define __HYPERCALL_5PARAM __HYPERCALL_4PARAM, "+r" (__arg5) - -#define __HYPERCALL_0ARG() -#define __HYPERCALL_1ARG(a1) \ - __HYPERCALL_0ARG() __arg1 = (unsigned long)(a1); -#define __HYPERCALL_2ARG(a1,a2) \ - __HYPERCALL_1ARG(a1) __arg2 = (unsigned long)(a2); -#define __HYPERCALL_3ARG(a1,a2,a3) \ - __HYPERCALL_2ARG(a1,a2) __arg3 = (unsigned long)(a3); -#define __HYPERCALL_4ARG(a1,a2,a3,a4) \ - __HYPERCALL_3ARG(a1,a2,a3) __arg4 = (unsigned long)(a4); -#define __HYPERCALL_5ARG(a1,a2,a3,a4,a5) \ - __HYPERCALL_4ARG(a1,a2,a3,a4) __arg5 = (unsigned long)(a5); - -#define __HYPERCALL_CLOBBER5 "memory" -#define __HYPERCALL_CLOBBER4 __HYPERCALL_CLOBBER5, __HYPERCALL_ARG5REG -#define __HYPERCALL_CLOBBER3 __HYPERCALL_CLOBBER4, __HYPERCALL_ARG4REG -#define __HYPERCALL_CLOBBER2 __HYPERCALL_CLOBBER3, __HYPERCALL_ARG3REG -#define __HYPERCALL_CLOBBER1 __HYPERCALL_CLOBBER2, __HYPERCALL_ARG2REG -#define __HYPERCALL_CLOBBER0 __HYPERCALL_CLOBBER1, __HYPERCALL_ARG1REG - -#define _hypercall0(type, name) \ -({ \ - __HYPERCALL_DECLS; \ - __HYPERCALL_0ARG(); \ - asm volatile (__HYPERCALL \ - : __HYPERCALL_0PARAM \ - : __HYPERCALL_ENTRY(name) \ - : __HYPERCALL_CLOBBER0); \ - (type)__res; \ -}) - -#define _hypercall1(type, name, a1) \ -({ \ - __HYPERCALL_DECLS; \ - __HYPERCALL_1ARG(a1); \ - asm volatile (__HYPERCALL \ - : __HYPERCALL_1PARAM \ - : __HYPERCALL_ENTRY(name) \ - : __HYPERCALL_CLOBBER1); \ - (type)__res; \ -}) - -#define _hypercall2(type, name, a1, a2) \ -({ \ - __HYPERCALL_DECLS; \ - __HYPERCALL_2ARG(a1, a2); \ - asm volatile (__HYPERCALL \ - : __HYPERCALL_2PARAM \ - : __HYPERCALL_ENTRY(name) \ - : __HYPERCALL_CLOBBER2); \ - (type)__res; \ -}) - -#define _hypercall3(type, name, a1, a2, a3) \ -({ \ - __HYPERCALL_DECLS; \ - __HYPERCALL_3ARG(a1, a2, a3); \ - asm volatile (__HYPERCALL \ - : __HYPERCALL_3PARAM \ - : __HYPERCALL_ENTRY(name) \ - : __HYPERCALL_CLOBBER3); \ - (type)__res; \ -}) - -#define _hypercall4(type, name, a1, a2, a3, a4) \ -({ \ - __HYPERCALL_DECLS; \ - __HYPERCALL_4ARG(a1, a2, a3, a4); \ - asm volatile (__HYPERCALL \ - : __HYPERCALL_4PARAM \ - : __HYPERCALL_ENTRY(name) \ - : __HYPERCALL_CLOBBER4); \ - (type)__res; \ -}) - -#define _hypercall5(type, name, a1, a2, a3, a4, a5) \ -({ \ - __HYPERCALL_DECLS; \ - __HYPERCALL_5ARG(a1, a2, a3, a4, a5); \ - asm volatile (__HYPERCALL \ - : __HYPERCALL_5PARAM \ - : __HYPERCALL_ENTRY(name) \ - : __HYPERCALL_CLOBBER5); \ - (type)__res; \ -}) - -static inline int -HYPERVISOR_set_trap_table(struct trap_info *table) -{ - return _hypercall1(int, set_trap_table, table); -} - -static inline int -HYPERVISOR_mmu_update(struct mmu_update *req, int count, - int *success_count, domid_t domid) -{ - return _hypercall4(int, mmu_update, req, count, success_count, domid); -} - -static inline int -HYPERVISOR_mmuext_op(struct mmuext_op *op, int count, - int *success_count, domid_t domid) -{ - return _hypercall4(int, mmuext_op, op, count, success_count, domid); -} - -static inline int -HYPERVISOR_set_gdt(unsigned long *frame_list, int entries) -{ - return _hypercall2(int, set_gdt, frame_list, entries); -} - -static inline int -HYPERVISOR_stack_switch(unsigned long ss, unsigned long esp) -{ - return _hypercall2(int, stack_switch, ss, esp); -} - -#ifdef CONFIG_X86_32 -static inline int -HYPERVISOR_set_callbacks(unsigned long event_selector, - unsigned long event_address, - unsigned long failsafe_selector, - unsigned long failsafe_address) -{ - return _hypercall4(int, set_callbacks, - event_selector, event_address, - failsafe_selector, failsafe_address); -} -#else /* CONFIG_X86_64 */ -static inline int -HYPERVISOR_set_callbacks(unsigned long event_address, - unsigned long failsafe_address, - unsigned long syscall_address) -{ - return _hypercall3(int, set_callbacks, - event_address, failsafe_address, - syscall_address); -} -#endif /* CONFIG_X86_{32,64} */ - -static inline int -HYPERVISOR_callback_op(int cmd, void *arg) -{ - return _hypercall2(int, callback_op, cmd, arg); -} - -static inline int -HYPERVISOR_fpu_taskswitch(int set) -{ - return _hypercall1(int, fpu_taskswitch, set); -} - -static inline int -HYPERVISOR_sched_op(int cmd, void *arg) -{ - return _hypercall2(int, sched_op_new, cmd, arg); -} - -static inline long -HYPERVISOR_set_timer_op(u64 timeout) -{ - unsigned long timeout_hi = (unsigned long)(timeout>>32); - unsigned long timeout_lo = (unsigned long)timeout; - return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi); -} - -static inline int -HYPERVISOR_set_debugreg(int reg, unsigned long value) -{ - return _hypercall2(int, set_debugreg, reg, value); -} - -static inline unsigned long -HYPERVISOR_get_debugreg(int reg) -{ - return _hypercall1(unsigned long, get_debugreg, reg); -} - -static inline int -HYPERVISOR_update_descriptor(u64 ma, u64 desc) -{ - return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32); -} - -static inline int -HYPERVISOR_memory_op(unsigned int cmd, void *arg) -{ - return _hypercall2(int, memory_op, cmd, arg); -} - -static inline int -HYPERVISOR_multicall(void *call_list, int nr_calls) -{ - return _hypercall2(int, multicall, call_list, nr_calls); -} - -static inline int -HYPERVISOR_update_va_mapping(unsigned long va, pte_t new_val, - unsigned long flags) -{ - if (sizeof(new_val) == sizeof(long)) - return _hypercall3(int, update_va_mapping, va, - new_val.pte, flags); - else - return _hypercall4(int, update_va_mapping, va, - new_val.pte, new_val.pte >> 32, flags); -} - -static inline int -HYPERVISOR_event_channel_op(int cmd, void *arg) -{ - int rc = _hypercall2(int, event_channel_op, cmd, arg); - if (unlikely(rc == -ENOSYS)) { - struct evtchn_op op; - op.cmd = cmd; - memcpy(&op.u, arg, sizeof(op.u)); - rc = _hypercall1(int, event_channel_op_compat, &op); - memcpy(arg, &op.u, sizeof(op.u)); - } - return rc; -} - -static inline int -HYPERVISOR_xen_version(int cmd, void *arg) -{ - return _hypercall2(int, xen_version, cmd, arg); -} - -static inline int -HYPERVISOR_console_io(int cmd, int count, char *str) -{ - return _hypercall3(int, console_io, cmd, count, str); -} - -static inline int -HYPERVISOR_physdev_op(int cmd, void *arg) -{ - int rc = _hypercall2(int, physdev_op, cmd, arg); - if (unlikely(rc == -ENOSYS)) { - struct physdev_op op; - op.cmd = cmd; - memcpy(&op.u, arg, sizeof(op.u)); - rc = _hypercall1(int, physdev_op_compat, &op); - memcpy(arg, &op.u, sizeof(op.u)); - } - return rc; -} - -static inline int -HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count) -{ - return _hypercall3(int, grant_table_op, cmd, uop, count); -} - -static inline int -HYPERVISOR_update_va_mapping_otherdomain(unsigned long va, pte_t new_val, - unsigned long flags, domid_t domid) -{ - if (sizeof(new_val) == sizeof(long)) - return _hypercall4(int, update_va_mapping_otherdomain, va, - new_val.pte, flags, domid); - else - return _hypercall5(int, update_va_mapping_otherdomain, va, - new_val.pte, new_val.pte >> 32, - flags, domid); -} - -static inline int -HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type) -{ - return _hypercall2(int, vm_assist, cmd, type); -} - -static inline int -HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args) -{ - return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args); -} - -#ifdef CONFIG_X86_64 -static inline int -HYPERVISOR_set_segment_base(int reg, unsigned long value) -{ - return _hypercall2(int, set_segment_base, reg, value); -} -#endif - -static inline int -HYPERVISOR_suspend(unsigned long srec) -{ - return _hypercall3(int, sched_op, SCHEDOP_shutdown, - SHUTDOWN_suspend, srec); -} - -static inline int -HYPERVISOR_nmi_op(unsigned long op, unsigned long arg) -{ - return _hypercall2(int, nmi_op, op, arg); -} - -static inline void -MULTI_fpu_taskswitch(struct multicall_entry *mcl, int set) -{ - mcl->op = __HYPERVISOR_fpu_taskswitch; - mcl->args[0] = set; -} - -static inline void -MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va, - pte_t new_val, unsigned long flags) -{ - mcl->op = __HYPERVISOR_update_va_mapping; - mcl->args[0] = va; - if (sizeof(new_val) == sizeof(long)) { - mcl->args[1] = new_val.pte; - mcl->args[2] = flags; - } else { - mcl->args[1] = new_val.pte; - mcl->args[2] = new_val.pte >> 32; - mcl->args[3] = flags; - } -} - -static inline void -MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd, - void *uop, unsigned int count) -{ - mcl->op = __HYPERVISOR_grant_table_op; - mcl->args[0] = cmd; - mcl->args[1] = (unsigned long)uop; - mcl->args[2] = count; -} - -static inline void -MULTI_update_va_mapping_otherdomain(struct multicall_entry *mcl, unsigned long va, - pte_t new_val, unsigned long flags, - domid_t domid) -{ - mcl->op = __HYPERVISOR_update_va_mapping_otherdomain; - mcl->args[0] = va; - if (sizeof(new_val) == sizeof(long)) { - mcl->args[1] = new_val.pte; - mcl->args[2] = flags; - mcl->args[3] = domid; - } else { - mcl->args[1] = new_val.pte; - mcl->args[2] = new_val.pte >> 32; - mcl->args[3] = flags; - mcl->args[4] = domid; - } -} - -static inline void -MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr, - struct desc_struct desc) -{ - mcl->op = __HYPERVISOR_update_descriptor; - if (sizeof(maddr) == sizeof(long)) { - mcl->args[0] = maddr; - mcl->args[1] = *(unsigned long *)&desc; - } else { - mcl->args[0] = maddr; - mcl->args[1] = maddr >> 32; - mcl->args[2] = desc.a; - mcl->args[3] = desc.b; - } -} - -static inline void -MULTI_memory_op(struct multicall_entry *mcl, unsigned int cmd, void *arg) -{ - mcl->op = __HYPERVISOR_memory_op; - mcl->args[0] = cmd; - mcl->args[1] = (unsigned long)arg; -} - -static inline void -MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req, - int count, int *success_count, domid_t domid) -{ - mcl->op = __HYPERVISOR_mmu_update; - mcl->args[0] = (unsigned long)req; - mcl->args[1] = count; - mcl->args[2] = (unsigned long)success_count; - mcl->args[3] = domid; -} - -static inline void -MULTI_mmuext_op(struct multicall_entry *mcl, struct mmuext_op *op, int count, - int *success_count, domid_t domid) -{ - mcl->op = __HYPERVISOR_mmuext_op; - mcl->args[0] = (unsigned long)op; - mcl->args[1] = count; - mcl->args[2] = (unsigned long)success_count; - mcl->args[3] = domid; -} - -static inline void -MULTI_set_gdt(struct multicall_entry *mcl, unsigned long *frames, int entries) -{ - mcl->op = __HYPERVISOR_set_gdt; - mcl->args[0] = (unsigned long)frames; - mcl->args[1] = entries; -} - -static inline void -MULTI_stack_switch(struct multicall_entry *mcl, - unsigned long ss, unsigned long esp) -{ - mcl->op = __HYPERVISOR_stack_switch; - mcl->args[0] = ss; - mcl->args[1] = esp; -} - -#endif /* ASM_X86__XEN__HYPERCALL_H */ |