Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator, accelerator interfaces |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * Copyright (c) 2014 Red Hat Inc. |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 8 | * of this software and associated documentation files (the "Software"), to deal |
| 9 | * in the Software without restriction, including without limitation the rights |
| 10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 11 | * copies of the Software, and to permit persons to whom the Software is |
| 12 | * furnished to do so, subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice shall be included in |
| 15 | * all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 23 | * THE SOFTWARE. |
| 24 | */ |
| 25 | |
Peter Maydell | d38ea87 | 2016-01-29 17:50:05 +0000 | [diff] [blame] | 26 | #include "qemu/osdep.h" |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 27 | #include "sysemu/accel.h" |
Eduardo Habkost | f6a1ef6 | 2014-09-26 17:45:30 -0300 | [diff] [blame] | 28 | #include "hw/boards.h" |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 29 | #include "qemu-common.h" |
| 30 | #include "sysemu/arch_init.h" |
| 31 | #include "sysemu/sysemu.h" |
| 32 | #include "sysemu/kvm.h" |
| 33 | #include "sysemu/qtest.h" |
| 34 | #include "hw/xen/xen.h" |
Eduardo Habkost | b14a0b7 | 2014-09-26 17:45:21 -0300 | [diff] [blame] | 35 | #include "qom/object.h" |
Eduardo Habkost | ac2da55 | 2014-09-26 17:45:31 -0300 | [diff] [blame] | 36 | #include "hw/boards.h" |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 37 | |
| 38 | int tcg_tb_size; |
| 39 | static bool tcg_allowed = true; |
| 40 | |
Eduardo Habkost | f6a1ef6 | 2014-09-26 17:45:30 -0300 | [diff] [blame] | 41 | static int tcg_init(MachineState *ms) |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 42 | { |
| 43 | tcg_exec_init(tcg_tb_size * 1024 * 1024); |
| 44 | return 0; |
| 45 | } |
| 46 | |
Eduardo Habkost | b14a0b7 | 2014-09-26 17:45:21 -0300 | [diff] [blame] | 47 | static const TypeInfo accel_type = { |
| 48 | .name = TYPE_ACCEL, |
| 49 | .parent = TYPE_OBJECT, |
| 50 | .class_size = sizeof(AccelClass), |
| 51 | .instance_size = sizeof(AccelState), |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 52 | }; |
| 53 | |
Eduardo Habkost | b14a0b7 | 2014-09-26 17:45:21 -0300 | [diff] [blame] | 54 | /* Lookup AccelClass from opt_name. Returns NULL if not found */ |
| 55 | static AccelClass *accel_find(const char *opt_name) |
Eduardo Habkost | a224655 | 2014-09-26 17:45:20 -0300 | [diff] [blame] | 56 | { |
Eduardo Habkost | b14a0b7 | 2014-09-26 17:45:21 -0300 | [diff] [blame] | 57 | char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name); |
| 58 | AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name)); |
| 59 | g_free(class_name); |
| 60 | return ac; |
Eduardo Habkost | a224655 | 2014-09-26 17:45:20 -0300 | [diff] [blame] | 61 | } |
| 62 | |
Eduardo Habkost | f6a1ef6 | 2014-09-26 17:45:30 -0300 | [diff] [blame] | 63 | static int accel_init_machine(AccelClass *acc, MachineState *ms) |
Eduardo Habkost | d95c852 | 2014-09-26 17:45:28 -0300 | [diff] [blame] | 64 | { |
Eduardo Habkost | ac2da55 | 2014-09-26 17:45:31 -0300 | [diff] [blame] | 65 | ObjectClass *oc = OBJECT_CLASS(acc); |
| 66 | const char *cname = object_class_get_name(oc); |
| 67 | AccelState *accel = ACCEL(object_new(cname)); |
Eduardo Habkost | d95c852 | 2014-09-26 17:45:28 -0300 | [diff] [blame] | 68 | int ret; |
Eduardo Habkost | ac2da55 | 2014-09-26 17:45:31 -0300 | [diff] [blame] | 69 | ms->accelerator = accel; |
Eduardo Habkost | d95c852 | 2014-09-26 17:45:28 -0300 | [diff] [blame] | 70 | *(acc->allowed) = true; |
Eduardo Habkost | f6a1ef6 | 2014-09-26 17:45:30 -0300 | [diff] [blame] | 71 | ret = acc->init_machine(ms); |
Eduardo Habkost | d95c852 | 2014-09-26 17:45:28 -0300 | [diff] [blame] | 72 | if (ret < 0) { |
Eduardo Habkost | ac2da55 | 2014-09-26 17:45:31 -0300 | [diff] [blame] | 73 | ms->accelerator = NULL; |
Eduardo Habkost | d95c852 | 2014-09-26 17:45:28 -0300 | [diff] [blame] | 74 | *(acc->allowed) = false; |
Eduardo Habkost | ac2da55 | 2014-09-26 17:45:31 -0300 | [diff] [blame] | 75 | object_unref(OBJECT(accel)); |
Eduardo Habkost | d95c852 | 2014-09-26 17:45:28 -0300 | [diff] [blame] | 76 | } |
| 77 | return ret; |
| 78 | } |
| 79 | |
Eduardo Habkost | f6a1ef6 | 2014-09-26 17:45:30 -0300 | [diff] [blame] | 80 | int configure_accelerator(MachineState *ms) |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 81 | { |
| 82 | const char *p; |
| 83 | char buf[10]; |
Eduardo Habkost | a224655 | 2014-09-26 17:45:20 -0300 | [diff] [blame] | 84 | int ret; |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 85 | bool accel_initialised = false; |
| 86 | bool init_failed = false; |
Eduardo Habkost | b14a0b7 | 2014-09-26 17:45:21 -0300 | [diff] [blame] | 87 | AccelClass *acc = NULL; |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 88 | |
| 89 | p = qemu_opt_get(qemu_get_machine_opts(), "accel"); |
| 90 | if (p == NULL) { |
| 91 | /* Use the default "accelerator", tcg */ |
| 92 | p = "tcg"; |
| 93 | } |
| 94 | |
| 95 | while (!accel_initialised && *p != '\0') { |
| 96 | if (*p == ':') { |
| 97 | p++; |
| 98 | } |
| 99 | p = get_opt_name(buf, sizeof(buf), p, ':'); |
Eduardo Habkost | a224655 | 2014-09-26 17:45:20 -0300 | [diff] [blame] | 100 | acc = accel_find(buf); |
| 101 | if (!acc) { |
Eduardo Habkost | b31f9ac | 2014-09-26 17:45:23 -0300 | [diff] [blame] | 102 | fprintf(stderr, "\"%s\" accelerator not found.\n", buf); |
Eduardo Habkost | a224655 | 2014-09-26 17:45:20 -0300 | [diff] [blame] | 103 | continue; |
| 104 | } |
Eduardo Habkost | f6dfb83 | 2014-09-26 17:45:22 -0300 | [diff] [blame] | 105 | if (acc->available && !acc->available()) { |
Eduardo Habkost | a224655 | 2014-09-26 17:45:20 -0300 | [diff] [blame] | 106 | printf("%s not supported for this target\n", |
| 107 | acc->name); |
| 108 | continue; |
| 109 | } |
Eduardo Habkost | f6a1ef6 | 2014-09-26 17:45:30 -0300 | [diff] [blame] | 110 | ret = accel_init_machine(acc, ms); |
Eduardo Habkost | a224655 | 2014-09-26 17:45:20 -0300 | [diff] [blame] | 111 | if (ret < 0) { |
| 112 | init_failed = true; |
| 113 | fprintf(stderr, "failed to initialize %s: %s\n", |
| 114 | acc->name, |
| 115 | strerror(-ret)); |
Eduardo Habkost | a224655 | 2014-09-26 17:45:20 -0300 | [diff] [blame] | 116 | } else { |
| 117 | accel_initialised = true; |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 118 | } |
| 119 | } |
| 120 | |
| 121 | if (!accel_initialised) { |
| 122 | if (!init_failed) { |
| 123 | fprintf(stderr, "No accelerator found!\n"); |
| 124 | } |
| 125 | exit(1); |
| 126 | } |
| 127 | |
| 128 | if (init_failed) { |
Eduardo Habkost | e8b466e | 2014-09-26 17:45:19 -0300 | [diff] [blame] | 129 | fprintf(stderr, "Back to %s accelerator.\n", acc->name); |
Eduardo Habkost | a1a9cb0 | 2014-09-26 17:45:17 -0300 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | return !accel_initialised; |
| 133 | } |
Eduardo Habkost | b14a0b7 | 2014-09-26 17:45:21 -0300 | [diff] [blame] | 134 | |
| 135 | |
| 136 | static void tcg_accel_class_init(ObjectClass *oc, void *data) |
| 137 | { |
| 138 | AccelClass *ac = ACCEL_CLASS(oc); |
| 139 | ac->name = "tcg"; |
Eduardo Habkost | 0d15da8 | 2014-09-26 17:45:29 -0300 | [diff] [blame] | 140 | ac->init_machine = tcg_init; |
Eduardo Habkost | b14a0b7 | 2014-09-26 17:45:21 -0300 | [diff] [blame] | 141 | ac->allowed = &tcg_allowed; |
| 142 | } |
| 143 | |
| 144 | #define TYPE_TCG_ACCEL ACCEL_CLASS_NAME("tcg") |
| 145 | |
| 146 | static const TypeInfo tcg_accel_type = { |
| 147 | .name = TYPE_TCG_ACCEL, |
| 148 | .parent = TYPE_ACCEL, |
| 149 | .class_init = tcg_accel_class_init, |
| 150 | }; |
| 151 | |
Eduardo Habkost | b14a0b7 | 2014-09-26 17:45:21 -0300 | [diff] [blame] | 152 | static void register_accel_types(void) |
| 153 | { |
| 154 | type_register_static(&accel_type); |
| 155 | type_register_static(&tcg_accel_type); |
Eduardo Habkost | b14a0b7 | 2014-09-26 17:45:21 -0300 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | type_init(register_accel_types); |