1 /* 2 * WHPX platform APIC support 3 * 4 * Copyright (c) 2011 Siemens AG 5 * 6 * Authors: 7 * Jan Kiszka <jan.kiszka@siemens.com> 8 * John Starks <jostarks@microsoft.com> 9 * 10 * This work is licensed under the terms of the GNU GPL version 2. 11 * See the COPYING file in the top-level directory. 12 */ 13 #include "qemu/osdep.h" 14 #include "qemu/error-report.h" 15 #include "cpu.h" 16 #include "hw/i386/apic_internal.h" 17 #include "hw/i386/apic-msidef.h" 18 #include "hw/pci/msi.h" 19 #include "sysemu/hw_accel.h" 20 #include "sysemu/whpx.h" 21 #include "whpx-internal.h" 22 23 struct whpx_lapic_state { 24 struct { 25 uint32_t data; 26 uint32_t padding[3]; 27 } fields[256]; 28 }; 29 30 static void whpx_put_apic_state(APICCommonState *s, 31 struct whpx_lapic_state *kapic) 32 { 33 int i; 34 35 memset(kapic, 0, sizeof(*kapic)); 36 kapic->fields[0x2].data = s->id << 24; 37 kapic->fields[0x3].data = s->version | ((APIC_LVT_NB - 1) << 16); 38 kapic->fields[0x8].data = s->tpr; 39 kapic->fields[0xd].data = s->log_dest << 24; 40 kapic->fields[0xe].data = s->dest_mode << 28 | 0x0fffffff; 41 kapic->fields[0xf].data = s->spurious_vec; 42 for (i = 0; i < 8; i++) { 43 kapic->fields[0x10 + i].data = s->isr[i]; 44 kapic->fields[0x18 + i].data = s->tmr[i]; 45 kapic->fields[0x20 + i].data = s->irr[i]; 46 } 47 48 kapic->fields[0x28].data = s->esr; 49 kapic->fields[0x30].data = s->icr[0]; 50 kapic->fields[0x31].data = s->icr[1]; 51 for (i = 0; i < APIC_LVT_NB; i++) { 52 kapic->fields[0x32 + i].data = s->lvt[i]; 53 } 54 55 kapic->fields[0x38].data = s->initial_count; 56 kapic->fields[0x3e].data = s->divide_conf; 57 } 58 59 static void whpx_get_apic_state(APICCommonState *s, 60 struct whpx_lapic_state *kapic) 61 { 62 int i, v; 63 64 s->id = kapic->fields[0x2].data >> 24; 65 s->tpr = kapic->fields[0x8].data; 66 s->arb_id = kapic->fields[0x9].data; 67 s->log_dest = kapic->fields[0xd].data >> 24; 68 s->dest_mode = kapic->fields[0xe].data >> 28; 69 s->spurious_vec = kapic->fields[0xf].data; 70 for (i = 0; i < 8; i++) { 71 s->isr[i] = kapic->fields[0x10 + i].data; 72 s->tmr[i] = kapic->fields[0x18 + i].data; 73 s->irr[i] = kapic->fields[0x20 + i].data; 74 } 75 76 s->esr = kapic->fields[0x28].data; 77 s->icr[0] = kapic->fields[0x30].data; 78 s->icr[1] = kapic->fields[0x31].data; 79 for (i = 0; i < APIC_LVT_NB; i++) { 80 s->lvt[i] = kapic->fields[0x32 + i].data; 81 } 82 83 s->initial_count = kapic->fields[0x38].data; 84 s->divide_conf = kapic->fields[0x3e].data; 85 86 v = (s->divide_conf & 3) | ((s->divide_conf >> 1) & 4); 87 s->count_shift = (v + 1) & 7; 88 89 s->initial_count_load_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 90 apic_next_timer(s, s->initial_count_load_time); 91 } 92 93 static void whpx_apic_set_base(APICCommonState *s, uint64_t val) 94 { 95 s->apicbase = val; 96 } 97 98 static void whpx_put_apic_base(CPUState *cpu, uint64_t val) 99 { 100 HRESULT hr; 101 WHV_REGISTER_VALUE reg_value = {.Reg64 = val}; 102 WHV_REGISTER_NAME reg_name = WHvX64RegisterApicBase; 103 104 hr = whp_dispatch.WHvSetVirtualProcessorRegisters( 105 whpx_global.partition, 106 cpu->cpu_index, 107 ®_name, 1, 108 ®_value); 109 110 if (FAILED(hr)) { 111 error_report("WHPX: Failed to set MSR APIC base, hr=%08lx", hr); 112 } 113 } 114 115 static void whpx_apic_set_tpr(APICCommonState *s, uint8_t val) 116 { 117 s->tpr = val; 118 } 119 120 static uint8_t whpx_apic_get_tpr(APICCommonState *s) 121 { 122 return s->tpr; 123 } 124 125 static void whpx_apic_vapic_base_update(APICCommonState *s) 126 { 127 /* not implemented yet */ 128 } 129 130 static void whpx_apic_put(CPUState *cs, run_on_cpu_data data) 131 { 132 APICCommonState *s = data.host_ptr; 133 struct whpx_lapic_state kapic; 134 HRESULT hr; 135 136 whpx_put_apic_base(CPU(s->cpu), s->apicbase); 137 whpx_put_apic_state(s, &kapic); 138 139 hr = whp_dispatch.WHvSetVirtualProcessorInterruptControllerState2( 140 whpx_global.partition, 141 cs->cpu_index, 142 &kapic, 143 sizeof(kapic)); 144 if (FAILED(hr)) { 145 fprintf(stderr, 146 "WHvSetVirtualProcessorInterruptControllerState failed: %08lx\n", 147 hr); 148 149 abort(); 150 } 151 } 152 153 void whpx_apic_get(DeviceState *dev) 154 { 155 APICCommonState *s = APIC_COMMON(dev); 156 CPUState *cpu = CPU(s->cpu); 157 struct whpx_lapic_state kapic; 158 159 HRESULT hr = whp_dispatch.WHvGetVirtualProcessorInterruptControllerState2( 160 whpx_global.partition, 161 cpu->cpu_index, 162 &kapic, 163 sizeof(kapic), 164 NULL); 165 if (FAILED(hr)) { 166 fprintf(stderr, 167 "WHvSetVirtualProcessorInterruptControllerState failed: %08lx\n", 168 hr); 169 170 abort(); 171 } 172 173 whpx_get_apic_state(s, &kapic); 174 } 175 176 static void whpx_apic_post_load(APICCommonState *s) 177 { 178 run_on_cpu(CPU(s->cpu), whpx_apic_put, RUN_ON_CPU_HOST_PTR(s)); 179 } 180 181 static void whpx_apic_external_nmi(APICCommonState *s) 182 { 183 } 184 185 static void whpx_send_msi(MSIMessage *msg) 186 { 187 uint64_t addr = msg->address; 188 uint32_t data = msg->data; 189 uint8_t dest = (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT; 190 uint8_t vector = (data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT; 191 uint8_t dest_mode = (addr >> MSI_ADDR_DEST_MODE_SHIFT) & 0x1; 192 uint8_t trigger_mode = (data >> MSI_DATA_TRIGGER_SHIFT) & 0x1; 193 uint8_t delivery = (data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7; 194 195 WHV_INTERRUPT_CONTROL interrupt = { 196 /* Values correspond to delivery modes */ 197 .Type = delivery, 198 .DestinationMode = dest_mode ? 199 WHvX64InterruptDestinationModeLogical : 200 WHvX64InterruptDestinationModePhysical, 201 202 .TriggerMode = trigger_mode ? 203 WHvX64InterruptTriggerModeLevel : WHvX64InterruptTriggerModeEdge, 204 .Reserved = 0, 205 .Vector = vector, 206 .Destination = dest, 207 }; 208 HRESULT hr = whp_dispatch.WHvRequestInterrupt(whpx_global.partition, 209 &interrupt, sizeof(interrupt)); 210 if (FAILED(hr)) { 211 fprintf(stderr, "whpx: injection failed, MSI (%llx, %x) delivery: %d, " 212 "dest_mode: %d, trigger mode: %d, vector: %d, lost (%08lx)\n", 213 addr, data, delivery, dest_mode, trigger_mode, vector, hr); 214 } 215 } 216 217 static uint64_t whpx_apic_mem_read(void *opaque, hwaddr addr, 218 unsigned size) 219 { 220 return ~(uint64_t)0; 221 } 222 223 static void whpx_apic_mem_write(void *opaque, hwaddr addr, 224 uint64_t data, unsigned size) 225 { 226 MSIMessage msg = { .address = addr, .data = data }; 227 whpx_send_msi(&msg); 228 } 229 230 static const MemoryRegionOps whpx_apic_io_ops = { 231 .read = whpx_apic_mem_read, 232 .write = whpx_apic_mem_write, 233 .endianness = DEVICE_NATIVE_ENDIAN, 234 }; 235 236 static void whpx_apic_reset(APICCommonState *s) 237 { 238 /* Not used by WHPX. */ 239 s->wait_for_sipi = 0; 240 241 run_on_cpu(CPU(s->cpu), whpx_apic_put, RUN_ON_CPU_HOST_PTR(s)); 242 } 243 244 static void whpx_apic_realize(DeviceState *dev, Error **errp) 245 { 246 APICCommonState *s = APIC_COMMON(dev); 247 248 memory_region_init_io(&s->io_memory, OBJECT(s), &whpx_apic_io_ops, s, 249 "whpx-apic-msi", APIC_SPACE_SIZE); 250 251 msi_nonbroken = true; 252 } 253 254 static void whpx_apic_class_init(ObjectClass *klass, void *data) 255 { 256 APICCommonClass *k = APIC_COMMON_CLASS(klass); 257 258 k->realize = whpx_apic_realize; 259 k->reset = whpx_apic_reset; 260 k->set_base = whpx_apic_set_base; 261 k->set_tpr = whpx_apic_set_tpr; 262 k->get_tpr = whpx_apic_get_tpr; 263 k->post_load = whpx_apic_post_load; 264 k->vapic_base_update = whpx_apic_vapic_base_update; 265 k->external_nmi = whpx_apic_external_nmi; 266 k->send_msi = whpx_send_msi; 267 } 268 269 static const TypeInfo whpx_apic_info = { 270 .name = "whpx-apic", 271 .parent = TYPE_APIC_COMMON, 272 .instance_size = sizeof(APICCommonState), 273 .class_init = whpx_apic_class_init, 274 }; 275 276 static void whpx_apic_register_types(void) 277 { 278 type_register_static(&whpx_apic_info); 279 } 280 281 type_init(whpx_apic_register_types) 282