1 /* 2 * QEMU IDE Emulation: PCI PIIX3/4 support. 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * Copyright (c) 2006 Openedhand Ltd. 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 26 #include <hw/hw.h> 27 #include <hw/i386/pc.h> 28 #include <hw/pci/pci.h> 29 #include <hw/isa/isa.h> 30 #include "sysemu/blockdev.h" 31 #include "sysemu/sysemu.h" 32 #include "sysemu/dma.h" 33 34 #include <hw/ide/pci.h> 35 36 static uint64_t bmdma_read(void *opaque, hwaddr addr, unsigned size) 37 { 38 BMDMAState *bm = opaque; 39 uint32_t val; 40 41 if (size != 1) { 42 return ((uint64_t)1 << (size * 8)) - 1; 43 } 44 45 switch(addr & 3) { 46 case 0: 47 val = bm->cmd; 48 break; 49 case 2: 50 val = bm->status; 51 break; 52 default: 53 val = 0xff; 54 break; 55 } 56 #ifdef DEBUG_IDE 57 printf("bmdma: readb 0x%02x : 0x%02x\n", (uint8_t)addr, val); 58 #endif 59 return val; 60 } 61 62 static void bmdma_write(void *opaque, hwaddr addr, 63 uint64_t val, unsigned size) 64 { 65 BMDMAState *bm = opaque; 66 67 if (size != 1) { 68 return; 69 } 70 71 #ifdef DEBUG_IDE 72 printf("bmdma: writeb 0x%02x : 0x%02x\n", (uint8_t)addr, (uint8_t)val); 73 #endif 74 switch(addr & 3) { 75 case 0: 76 bmdma_cmd_writeb(bm, val); 77 break; 78 case 2: 79 bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06); 80 break; 81 } 82 } 83 84 static const MemoryRegionOps piix_bmdma_ops = { 85 .read = bmdma_read, 86 .write = bmdma_write, 87 }; 88 89 static void bmdma_setup_bar(PCIIDEState *d) 90 { 91 int i; 92 93 memory_region_init(&d->bmdma_bar, OBJECT(d), "piix-bmdma-container", 16); 94 for(i = 0;i < 2; i++) { 95 BMDMAState *bm = &d->bmdma[i]; 96 97 memory_region_init_io(&bm->extra_io, OBJECT(d), &piix_bmdma_ops, bm, 98 "piix-bmdma", 4); 99 memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io); 100 memory_region_init_io(&bm->addr_ioport, OBJECT(d), 101 &bmdma_addr_ioport_ops, bm, "bmdma", 4); 102 memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport); 103 } 104 } 105 106 static void piix3_reset(void *opaque) 107 { 108 PCIIDEState *d = opaque; 109 PCIDevice *pd = PCI_DEVICE(d); 110 uint8_t *pci_conf = pd->config; 111 int i; 112 113 for (i = 0; i < 2; i++) { 114 ide_bus_reset(&d->bus[i]); 115 } 116 117 /* TODO: this is the default. do not override. */ 118 pci_conf[PCI_COMMAND] = 0x00; 119 /* TODO: this is the default. do not override. */ 120 pci_conf[PCI_COMMAND + 1] = 0x00; 121 /* TODO: use pci_set_word */ 122 pci_conf[PCI_STATUS] = PCI_STATUS_FAST_BACK; 123 pci_conf[PCI_STATUS + 1] = PCI_STATUS_DEVSEL_MEDIUM >> 8; 124 pci_conf[0x20] = 0x01; /* BMIBA: 20-23h */ 125 } 126 127 static void pci_piix_init_ports(PCIIDEState *d) { 128 static const struct { 129 int iobase; 130 int iobase2; 131 int isairq; 132 } port_info[] = { 133 {0x1f0, 0x3f6, 14}, 134 {0x170, 0x376, 15}, 135 }; 136 int i; 137 138 for (i = 0; i < 2; i++) { 139 ide_bus_new(&d->bus[i], sizeof(d->bus[i]), DEVICE(d), i, 2); 140 ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase, 141 port_info[i].iobase2); 142 ide_init2(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq)); 143 144 bmdma_init(&d->bus[i], &d->bmdma[i], d); 145 d->bmdma[i].bus = &d->bus[i]; 146 qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb, 147 &d->bmdma[i].dma); 148 } 149 } 150 151 static int pci_piix_ide_initfn(PCIDevice *dev) 152 { 153 PCIIDEState *d = PCI_IDE(dev); 154 uint8_t *pci_conf = dev->config; 155 156 pci_conf[PCI_CLASS_PROG] = 0x80; // legacy ATA mode 157 158 qemu_register_reset(piix3_reset, d); 159 160 bmdma_setup_bar(d); 161 pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar); 162 163 vmstate_register(DEVICE(dev), 0, &vmstate_ide_pci, d); 164 165 pci_piix_init_ports(d); 166 167 return 0; 168 } 169 170 int pci_piix3_xen_ide_unplug(DeviceState *dev) 171 { 172 PCIIDEState *pci_ide; 173 DriveInfo *di; 174 int i = 0; 175 176 pci_ide = PCI_IDE(dev); 177 178 for (; i < 3; i++) { 179 di = drive_get_by_index(IF_IDE, i); 180 if (di != NULL && !di->media_cd) { 181 DeviceState *ds = bdrv_get_attached_dev(di->bdrv); 182 if (ds) { 183 bdrv_detach_dev(di->bdrv, ds); 184 } 185 bdrv_close(di->bdrv); 186 pci_ide->bus[di->bus].ifs[di->unit].bs = NULL; 187 drive_del(di); 188 } 189 } 190 qdev_reset_all(DEVICE(dev)); 191 return 0; 192 } 193 194 PCIDevice *pci_piix3_xen_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn) 195 { 196 PCIDevice *dev; 197 198 dev = pci_create_simple(bus, devfn, "piix3-ide-xen"); 199 pci_ide_create_devs(dev, hd_table); 200 return dev; 201 } 202 203 static void pci_piix_ide_exitfn(PCIDevice *dev) 204 { 205 PCIIDEState *d = PCI_IDE(dev); 206 unsigned i; 207 208 for (i = 0; i < 2; ++i) { 209 memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io); 210 memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport); 211 } 212 } 213 214 /* hd_table must contain 4 block drivers */ 215 /* NOTE: for the PIIX3, the IRQs and IOports are hardcoded */ 216 PCIDevice *pci_piix3_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn) 217 { 218 PCIDevice *dev; 219 220 dev = pci_create_simple(bus, devfn, "piix3-ide"); 221 pci_ide_create_devs(dev, hd_table); 222 return dev; 223 } 224 225 /* hd_table must contain 4 block drivers */ 226 /* NOTE: for the PIIX4, the IRQs and IOports are hardcoded */ 227 PCIDevice *pci_piix4_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn) 228 { 229 PCIDevice *dev; 230 231 dev = pci_create_simple(bus, devfn, "piix4-ide"); 232 pci_ide_create_devs(dev, hd_table); 233 return dev; 234 } 235 236 static void piix3_ide_class_init(ObjectClass *klass, void *data) 237 { 238 DeviceClass *dc = DEVICE_CLASS(klass); 239 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 240 241 k->init = pci_piix_ide_initfn; 242 k->exit = pci_piix_ide_exitfn; 243 k->vendor_id = PCI_VENDOR_ID_INTEL; 244 k->device_id = PCI_DEVICE_ID_INTEL_82371SB_1; 245 k->class_id = PCI_CLASS_STORAGE_IDE; 246 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 247 dc->hotpluggable = false; 248 } 249 250 static const TypeInfo piix3_ide_info = { 251 .name = "piix3-ide", 252 .parent = TYPE_PCI_IDE, 253 .class_init = piix3_ide_class_init, 254 }; 255 256 static void piix3_ide_xen_class_init(ObjectClass *klass, void *data) 257 { 258 DeviceClass *dc = DEVICE_CLASS(klass); 259 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 260 261 k->init = pci_piix_ide_initfn; 262 k->vendor_id = PCI_VENDOR_ID_INTEL; 263 k->device_id = PCI_DEVICE_ID_INTEL_82371SB_1; 264 k->class_id = PCI_CLASS_STORAGE_IDE; 265 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 266 } 267 268 static const TypeInfo piix3_ide_xen_info = { 269 .name = "piix3-ide-xen", 270 .parent = TYPE_PCI_IDE, 271 .class_init = piix3_ide_xen_class_init, 272 }; 273 274 static void piix4_ide_class_init(ObjectClass *klass, void *data) 275 { 276 DeviceClass *dc = DEVICE_CLASS(klass); 277 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 278 279 k->init = pci_piix_ide_initfn; 280 k->exit = pci_piix_ide_exitfn; 281 k->vendor_id = PCI_VENDOR_ID_INTEL; 282 k->device_id = PCI_DEVICE_ID_INTEL_82371AB; 283 k->class_id = PCI_CLASS_STORAGE_IDE; 284 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 285 dc->hotpluggable = false; 286 } 287 288 static const TypeInfo piix4_ide_info = { 289 .name = "piix4-ide", 290 .parent = TYPE_PCI_IDE, 291 .class_init = piix4_ide_class_init, 292 }; 293 294 static void piix_ide_register_types(void) 295 { 296 type_register_static(&piix3_ide_info); 297 type_register_static(&piix3_ide_xen_info); 298 type_register_static(&piix4_ide_info); 299 } 300 301 type_init(piix_ide_register_types) 302