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| 3743 | rimsky | 1 | /* |
| 2 | * Copyright (c) 2008 Pavel Rimsky |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup sparc64 |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** |
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| 33 | * @file |
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| 34 | * @brief Macros, constants and functions needed to perform a call to the |
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| 35 | * hypervisor API. For details and terminology see this document: |
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| 36 | * UltraSPARC Virtual Machine Specification (The Hypervisor API |
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| 37 | * specification for Logical Domains). |
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| 38 | * |
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| 39 | */ |
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| 40 | |||
| 41 | #ifndef KERN_sparc64_sun4v_HYPERCALL_H_ |
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| 42 | #define KERN_sparc64_sun4v_HYPERCALL_H_ |
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| 43 | |||
| 44 | /* SW trap numbers for hyperfast traps */ |
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| 45 | #define FAST_TRAP 0x80 |
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| 46 | #define MMU_MAP_ADDR 0x83 |
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| 47 | #define MMU_UNMAP_ADDR 0x84 |
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| 48 | |||
| 49 | /* function codes for fast traps */ |
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| 50 | #define MACH_DESC 0x01 |
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| 51 | #define CPU_START 0x10 |
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| 52 | #define CPU_STOP 0x11 |
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| 53 | #define CPU_YIELD 0x12 |
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| 54 | #define CPU_MYID 0x16 |
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| 55 | #define CPU_STATE 0x17 |
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| 56 | #define CPU_SET_RTBA 0x18 |
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| 57 | #define CPU_GET_RTBA 0x19 |
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| 58 | #define MMU_TSB_CTX0 0x20 |
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| 59 | #define MMU_TSB_CTXNON0 0x21 |
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| 60 | #define MMU_DEMAP_PAGE 0x22 |
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| 61 | #define MMU_DEMAP_CTX 0x23 |
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| 62 | #define MMU_DEMAP_ALL 0x24 |
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| 63 | #define MMU_MAP_PERM_ADDR 0x25 |
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| 64 | #define MMU_FAULT_AREA_CONF 0x26 |
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| 65 | #define MMU_ENABLE 0x27 |
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| 66 | #define MMU_UNMAP_PERM_ADDR 0x28 |
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| 67 | #define MMU_TSB_CTX0_INFO 0x29 |
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| 68 | #define MMU_TSB_CTXNON0_INFO 0x2a |
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| 69 | #define MMU_FAULT_AREA_INFO 0x2b |
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| 70 | #define CPU_MONDO_SEND 0x42 |
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| 71 | #define CONS_GETCHAR 0x60 |
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| 72 | #define CONS_PUTCHAR 0x61 |
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| 73 | |||
| 3770 | rimsky | 74 | |
| 75 | /* return codes */ |
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| 76 | #define EOK 0 /**< Successful return */ |
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| 77 | #define ENOCPU 1 /**< Invalid CPU id */ |
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| 78 | #define ENORADDR 2 /**< Invalid real address */ |
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| 79 | #define ENOINTR 3 /**< Invalid interrupt id */ |
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| 80 | #define EBADPGSZ 4 /**< Invalid pagesize encoding */ |
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| 81 | #define EBADTSB 5 /**< Invalid TSB description */ |
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| 82 | #define EINVAL 6 /**< Invalid argument */ |
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| 83 | #define EBADTRAP 7 /**< Invalid function number */ |
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| 84 | #define EBADALIGN 8 /**< Invalid address alignment */ |
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| 85 | #define EWOULDBLOCK 9 /**< Cannot complete operation without blocking */ |
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| 86 | #define ENOACCESS 10 /**< No access to specified resource */ |
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| 87 | #define EIO 11 /**< I/O Error */ |
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| 88 | #define ECPUERROR 12 /**< CPU is in error state */ |
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| 89 | #define ENOTSUPPORTED 13 /**< Function not supported */ |
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| 90 | #define ENOMAP 14 /**< No mapping found */ |
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| 91 | #define ETOOMANY 15 /**< Too many items specified / limit reached */ |
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| 92 | #define ECHANNEL 16 /**< Invalid LDC channel */ |
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| 93 | #define EBUSY 17 /**< Operation failed as resource is otherwise busy */ |
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| 94 | |||
| 95 | |||
| 3743 | rimsky | 96 | /** |
| 97 | * Performs a hyperfast hypervisor API call from the assembly language code. |
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| 98 | * Expects the registers %o1-%o4 are properly filled with the arguments of the |
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| 99 | * call. |
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| 100 | * |
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| 101 | * @param function_number hyperfast call function number |
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| 102 | */ |
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| 103 | #define __HYPERCALL_FAST(function_number) \ |
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| 104 | set function_number, %o5; \ |
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| 105 | ta FAST_TRAP; |
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| 106 | |||
| 107 | /** |
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| 108 | * Performs a fast hypervisor API call from the assembly language code. |
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| 109 | * Expects the registers %o1-%o4 are properly filled with the arguments of the |
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| 110 | * call. |
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| 111 | * |
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| 112 | * @param sw_trap_number software trap number |
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| 113 | */ |
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| 114 | #define __HYPERCALL_HYPERFAST(sw_trap_number) \ |
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| 115 | ta (sw_trap_number); |
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| 116 | |||
| 117 | |||
| 118 | #ifndef __ASM__ |
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| 119 | |||
| 3783 | rimsky | 120 | #include <typedefs.h> |
| 121 | #include <arch/types.h> |
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| 122 | |||
| 3743 | rimsky | 123 | /* |
| 124 | * Macros to be used from the C-language code; __hypercall_fastN performs |
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| 125 | * a fast hypervisor API call taking exactly N arguments. |
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| 126 | */ |
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| 127 | |||
| 128 | #define __hypercall_fast0(function_number) \ |
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| 129 | __hypercall_fast(0, 0, 0, 0, 0, function_number) |
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| 130 | #define __hypercall_fast1(function_number, p1) \ |
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| 131 | __hypercall_fast(p1, 0, 0, 0, 0, function_number) |
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| 132 | #define __hypercall_fast2(function_number, p1, p2) \ |
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| 133 | __hypercall_fast(p1, p2, 0, 0, 0, function_number) |
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| 134 | #define __hypercall_fast3(function_number, p1, p2, p3) \ |
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| 135 | __hypercall_fast(p1, p2, p3, 0, 0, function_number) |
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| 136 | #define __hypercall_fast4(function_number, p1, p2, p3, p4) \ |
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| 137 | __hypercall_fast(p1, p2, p3, p4, 0, function_number) |
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| 138 | #define __hypercall_fast5(function_number, p1, p2, p3, p4, p5) \ |
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| 139 | __hypercall_fast(p1, p2, p3, p4, p5, function_number) |
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| 140 | |||
| 141 | /** |
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| 3817 | rimsky | 142 | * Performs a fast hypervisor API call which returns no value except for the |
| 143 | * error status. |
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| 3743 | rimsky | 144 | * |
| 145 | * @param p1 the 1st argument of the hypervisor API call |
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| 146 | * @param p2 the 2nd argument of the hypervisor API call |
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| 147 | * @param p3 the 3rd argument of the hypervisor API call |
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| 148 | * @param p4 the 4th argument of the hypervisor API call |
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| 149 | * @param p5 the 5th argument of the hypervisor API call |
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| 150 | * @param function_number function number of the call |
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| 3770 | rimsky | 151 | * @return error status |
| 3743 | rimsky | 152 | */ |
| 153 | static inline uint64_t |
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| 3817 | rimsky | 154 | __hypercall_fast(const uint64_t p1, const uint64_t p2, const uint64_t p3, |
| 155 | const uint64_t p4, const uint64_t p5, const uint64_t function_number) |
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| 3743 | rimsky | 156 | { |
| 157 | register uint64_t a6 asm("o5") = function_number; |
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| 158 | register uint64_t a1 asm("o0") = p1; |
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| 159 | register uint64_t a2 asm("o1") = p2; |
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| 160 | register uint64_t a3 asm("o2") = p3; |
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| 161 | register uint64_t a4 asm("o3") = p4; |
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| 162 | register uint64_t a5 asm("o4") = p5; |
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| 163 | |||
| 164 | asm volatile ( |
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| 165 | "ta %7\n" |
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| 166 | : "=r" (a1) |
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| 167 | : "r" (a1), "r" (a2), "r" (a3), "r" (a4), "r" (a5), "r" (a6), |
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| 168 | "i" (FAST_TRAP) |
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| 169 | : "memory" |
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| 170 | ); |
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| 3817 | rimsky | 171 | |
| 3743 | rimsky | 172 | return a1; |
| 173 | } |
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| 174 | |||
| 175 | /** |
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| 3817 | rimsky | 176 | * Performs a fast hypervisor API call which can return a value. |
| 3770 | rimsky | 177 | * |
| 178 | * @param p1 the 1st argument of the hypervisor API call |
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| 179 | * @param p2 the 2nd argument of the hypervisor API call |
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| 180 | * @param p3 the 3rd argument of the hypervisor API call |
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| 181 | * @param p4 the 4th argument of the hypervisor API call |
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| 182 | * @param p5 the 5th argument of the hypervisor API call |
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| 183 | * @param function_number function number of the call |
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| 3817 | rimsky | 184 | * @param ret1 pointer to an address where the return value |
| 185 | * of the hypercall should be saved, or NULL |
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| 3770 | rimsky | 186 | * @return error status |
| 187 | */ |
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| 188 | static inline uint64_t |
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| 3817 | rimsky | 189 | __hypercall_fast_ret1(const uint64_t p1, const uint64_t p2, const uint64_t p3, |
| 190 | const uint64_t p4, const uint64_t p5, const uint64_t function_number, |
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| 191 | uint64_t * const ret1) |
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| 3770 | rimsky | 192 | { |
| 3817 | rimsky | 193 | uint64_t errno = __hypercall_fast(p1, p2, p3, p4, p5, function_number); |
| 194 | if (ret1 != NULL) { |
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| 195 | asm volatile ("mov %%o1, %0\n" : "=r" (*ret1)); |
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| 196 | } |
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| 197 | return errno; |
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| 3770 | rimsky | 198 | } |
| 199 | |||
| 200 | /** |
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| 3743 | rimsky | 201 | * Performs a hyperfast hypervisor API call. |
| 202 | * |
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| 203 | * @param p1 the 1st argument of the hypervisor API call |
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| 204 | * @param p2 the 2nd argument of the hypervisor API call |
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| 205 | * @param p3 the 3rd argument of the hypervisor API call |
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| 206 | * @param p4 the 4th argument of the hypervisor API call |
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| 207 | * @param p5 the 5th argument of the hypervisor API call |
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| 208 | * @param sw_trap_number software trap number |
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| 209 | */ |
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| 210 | static inline uint64_t |
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| 211 | __hypercall_hyperfast(const uint64_t p1, const uint64_t p2, const uint64_t p3, |
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| 212 | const uint64_t p4, const uint64_t p5, const uint64_t sw_trap_number) |
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| 213 | { |
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| 214 | register uint64_t a1 asm("o0") = p1; |
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| 215 | register uint64_t a2 asm("o1") = p2; |
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| 216 | register uint64_t a3 asm("o2") = p3; |
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| 217 | register uint64_t a4 asm("o3") = p4; |
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| 218 | register uint64_t a5 asm("o4") = p5; |
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| 219 | |||
| 220 | asm volatile ( |
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| 221 | "ta %6\n" |
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| 222 | : "=r" (a1) |
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| 223 | : "r" (a1), "r" (a2), "r" (a3), "r" (a4), "r" (a5), |
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| 224 | "i" (sw_trap_number) |
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| 225 | : "memory" |
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| 226 | ); |
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| 227 | |||
| 228 | return a1; |
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| 229 | } |
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| 230 | |||
| 231 | #endif /* ASM */ |
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| 232 | |||
| 233 | #endif |
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| 234 | |||
| 235 | /** @} |
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| 236 | */ |