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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 | |||
| 120 | /* |
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| 121 | * Macros to be used from the C-language code; __hypercall_fastN performs |
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| 122 | * a fast hypervisor API call taking exactly N arguments. |
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| 123 | */ |
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| 124 | |||
| 125 | #define __hypercall_fast0(function_number) \ |
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| 126 | __hypercall_fast(0, 0, 0, 0, 0, function_number) |
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| 127 | #define __hypercall_fast1(function_number, p1) \ |
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| 128 | __hypercall_fast(p1, 0, 0, 0, 0, function_number) |
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| 129 | #define __hypercall_fast2(function_number, p1, p2) \ |
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| 130 | __hypercall_fast(p1, p2, 0, 0, 0, function_number) |
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| 131 | #define __hypercall_fast3(function_number, p1, p2, p3) \ |
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| 132 | __hypercall_fast(p1, p2, p3, 0, 0, function_number) |
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| 133 | #define __hypercall_fast4(function_number, p1, p2, p3, p4) \ |
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| 134 | __hypercall_fast(p1, p2, p3, p4, 0, function_number) |
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| 135 | #define __hypercall_fast5(function_number, p1, p2, p3, p4, p5) \ |
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| 136 | __hypercall_fast(p1, p2, p3, p4, p5, function_number) |
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| 137 | |||
| 138 | /** |
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| 3770 | rimsky | 139 | * Performs a fast hypervisor API call which can returns a value. |
| 3743 | rimsky | 140 | * |
| 141 | * @param p1 the 1st argument of the hypervisor API call |
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| 142 | * @param p2 the 2nd argument of the hypervisor API call |
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| 143 | * @param p3 the 3rd argument of the hypervisor API call |
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| 144 | * @param p4 the 4th argument of the hypervisor API call |
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| 145 | * @param p5 the 5th argument of the hypervisor API call |
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| 146 | * @param function_number function number of the call |
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| 3770 | rimsky | 147 | * @param ret1 pointer to an address where the return value |
| 148 | * of the hypercall should be saved, or NULL |
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| 149 | * @return error status |
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| 3743 | rimsky | 150 | */ |
| 151 | static inline uint64_t |
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| 3770 | rimsky | 152 | __hypercall_fast_ret1(const uint64_t p1, const uint64_t p2, const uint64_t p3, |
| 153 | const uint64_t p4, const uint64_t p5, const uint64_t function_number, |
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| 154 | uint64_t * const ret1) |
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| 3743 | rimsky | 155 | { |
| 156 | register uint64_t a6 asm("o5") = function_number; |
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| 157 | register uint64_t a1 asm("o0") = p1; |
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| 158 | register uint64_t a2 asm("o1") = p2; |
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| 159 | register uint64_t a3 asm("o2") = p3; |
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| 160 | register uint64_t a4 asm("o3") = p4; |
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| 161 | register uint64_t a5 asm("o4") = p5; |
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| 162 | |||
| 163 | asm volatile ( |
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| 164 | "ta %7\n" |
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| 165 | : "=r" (a1) |
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| 166 | : "r" (a1), "r" (a2), "r" (a3), "r" (a4), "r" (a5), "r" (a6), |
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| 167 | "i" (FAST_TRAP) |
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| 168 | : "memory" |
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| 169 | ); |
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| 170 | |||
| 3770 | rimsky | 171 | if (ret1 != NULL) |
| 172 | *ret1 = a2; |
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| 3743 | rimsky | 173 | return a1; |
| 174 | } |
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| 175 | |||
| 176 | /** |
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| 3770 | rimsky | 177 | * Performs a fast hypervisor API call which return no value except for the |
| 178 | * error status. |
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| 179 | * |
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| 180 | * @param p1 the 1st argument of the hypervisor API call |
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| 181 | * @param p2 the 2nd argument of the hypervisor API call |
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| 182 | * @param p3 the 3rd argument of the hypervisor API call |
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| 183 | * @param p4 the 4th argument of the hypervisor API call |
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| 184 | * @param p5 the 5th argument of the hypervisor API call |
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| 185 | * @param function_number function number of the call |
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| 186 | * @return error status |
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| 187 | */ |
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| 188 | static inline uint64_t |
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| 189 | __hypercall_fast(const uint64_t p1, const uint64_t p2, const uint64_t p3, |
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| 190 | const uint64_t p4, const uint64_t p5, const uint64_t function_number) |
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| 191 | { |
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| 192 | return __hypercall_fast_ret1(p1, p2, p3, p4, p5, function_number, |
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| 193 | NULL); |
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| 194 | } |
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| 195 | |||
| 196 | /** |
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| 3743 | rimsky | 197 | * Performs a hyperfast hypervisor API call. |
| 198 | * |
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| 199 | * @param p1 the 1st argument of the hypervisor API call |
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| 200 | * @param p2 the 2nd argument of the hypervisor API call |
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| 201 | * @param p3 the 3rd argument of the hypervisor API call |
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| 202 | * @param p4 the 4th argument of the hypervisor API call |
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| 203 | * @param p5 the 5th argument of the hypervisor API call |
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| 204 | * @param sw_trap_number software trap number |
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| 205 | */ |
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| 206 | static inline uint64_t |
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| 207 | __hypercall_hyperfast(const uint64_t p1, const uint64_t p2, const uint64_t p3, |
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| 208 | const uint64_t p4, const uint64_t p5, const uint64_t sw_trap_number) |
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| 209 | { |
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| 210 | register uint64_t a1 asm("o0") = p1; |
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| 211 | register uint64_t a2 asm("o1") = p2; |
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| 212 | register uint64_t a3 asm("o2") = p3; |
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| 213 | register uint64_t a4 asm("o3") = p4; |
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| 214 | register uint64_t a5 asm("o4") = p5; |
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| 215 | |||
| 216 | asm volatile ( |
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| 217 | "ta %6\n" |
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| 218 | : "=r" (a1) |
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| 219 | : "r" (a1), "r" (a2), "r" (a3), "r" (a4), "r" (a5), |
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| 220 | "i" (sw_trap_number) |
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| 221 | : "memory" |
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| 222 | ); |
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| 223 | |||
| 224 | return a1; |
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| 225 | } |
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| 226 | |||
| 227 | #endif /* ASM */ |
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| 228 | |||
| 229 | #endif |
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| 230 | |||
| 231 | /** @} |
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| 232 | */ |