1 /* 2 * QEMU IDE Emulation: PCI cmd646 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 #include <hw/hw.h> 26 #include <hw/i386/pc.h> 27 #include <hw/pci/pci.h> 28 #include <hw/isa/isa.h> 29 #include "block/block.h" 30 #include "sysemu/sysemu.h" 31 #include "sysemu/dma.h" 32 33 #include <hw/ide/pci.h> 34 35 /* CMD646 specific */ 36 #define MRDMODE 0x71 37 #define MRDMODE_INTR_CH0 0x04 38 #define MRDMODE_INTR_CH1 0x08 39 #define MRDMODE_BLK_CH0 0x10 40 #define MRDMODE_BLK_CH1 0x20 41 #define UDIDETCR0 0x73 42 #define UDIDETCR1 0x7B 43 44 static void cmd646_update_irq(PCIIDEState *d); 45 46 static uint64_t cmd646_cmd_read(void *opaque, hwaddr addr, 47 unsigned size) 48 { 49 CMD646BAR *cmd646bar = opaque; 50 51 if (addr != 2 || size != 1) { 52 return ((uint64_t)1 << (size * 8)) - 1; 53 } 54 return ide_status_read(cmd646bar->bus, addr + 2); 55 } 56 57 static void cmd646_cmd_write(void *opaque, hwaddr addr, 58 uint64_t data, unsigned size) 59 { 60 CMD646BAR *cmd646bar = opaque; 61 62 if (addr != 2 || size != 1) { 63 return; 64 } 65 ide_cmd_write(cmd646bar->bus, addr + 2, data); 66 } 67 68 static const MemoryRegionOps cmd646_cmd_ops = { 69 .read = cmd646_cmd_read, 70 .write = cmd646_cmd_write, 71 .endianness = DEVICE_LITTLE_ENDIAN, 72 }; 73 74 static uint64_t cmd646_data_read(void *opaque, hwaddr addr, 75 unsigned size) 76 { 77 CMD646BAR *cmd646bar = opaque; 78 79 if (size == 1) { 80 return ide_ioport_read(cmd646bar->bus, addr); 81 } else if (addr == 0) { 82 if (size == 2) { 83 return ide_data_readw(cmd646bar->bus, addr); 84 } else { 85 return ide_data_readl(cmd646bar->bus, addr); 86 } 87 } 88 return ((uint64_t)1 << (size * 8)) - 1; 89 } 90 91 static void cmd646_data_write(void *opaque, hwaddr addr, 92 uint64_t data, unsigned size) 93 { 94 CMD646BAR *cmd646bar = opaque; 95 96 if (size == 1) { 97 ide_ioport_write(cmd646bar->bus, addr, data); 98 } else if (addr == 0) { 99 if (size == 2) { 100 ide_data_writew(cmd646bar->bus, addr, data); 101 } else { 102 ide_data_writel(cmd646bar->bus, addr, data); 103 } 104 } 105 } 106 107 static const MemoryRegionOps cmd646_data_ops = { 108 .read = cmd646_data_read, 109 .write = cmd646_data_write, 110 .endianness = DEVICE_LITTLE_ENDIAN, 111 }; 112 113 static void setup_cmd646_bar(PCIIDEState *d, int bus_num) 114 { 115 IDEBus *bus = &d->bus[bus_num]; 116 CMD646BAR *bar = &d->cmd646_bar[bus_num]; 117 118 bar->bus = bus; 119 bar->pci_dev = d; 120 memory_region_init_io(&bar->cmd, OBJECT(d), &cmd646_cmd_ops, bar, 121 "cmd646-cmd", 4); 122 memory_region_init_io(&bar->data, OBJECT(d), &cmd646_data_ops, bar, 123 "cmd646-data", 8); 124 } 125 126 static uint64_t bmdma_read(void *opaque, hwaddr addr, 127 unsigned size) 128 { 129 BMDMAState *bm = opaque; 130 PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev); 131 uint32_t val; 132 133 if (size != 1) { 134 return ((uint64_t)1 << (size * 8)) - 1; 135 } 136 137 switch(addr & 3) { 138 case 0: 139 val = bm->cmd; 140 break; 141 case 1: 142 val = pci_dev->config[MRDMODE]; 143 break; 144 case 2: 145 val = bm->status; 146 break; 147 case 3: 148 if (bm == &bm->pci_dev->bmdma[0]) { 149 val = pci_dev->config[UDIDETCR0]; 150 } else { 151 val = pci_dev->config[UDIDETCR1]; 152 } 153 break; 154 default: 155 val = 0xff; 156 break; 157 } 158 #ifdef DEBUG_IDE 159 printf("bmdma: readb " TARGET_FMT_plx " : 0x%02x\n", addr, val); 160 #endif 161 return val; 162 } 163 164 static void bmdma_write(void *opaque, hwaddr addr, 165 uint64_t val, unsigned size) 166 { 167 BMDMAState *bm = opaque; 168 PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev); 169 170 if (size != 1) { 171 return; 172 } 173 174 #ifdef DEBUG_IDE 175 printf("bmdma: writeb " TARGET_FMT_plx " : 0x%" PRIx64 "\n", addr, val); 176 #endif 177 switch(addr & 3) { 178 case 0: 179 bmdma_cmd_writeb(bm, val); 180 break; 181 case 1: 182 pci_dev->config[MRDMODE] = 183 (pci_dev->config[MRDMODE] & ~0x30) | (val & 0x30); 184 cmd646_update_irq(bm->pci_dev); 185 break; 186 case 2: 187 bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06); 188 break; 189 case 3: 190 if (bm == &bm->pci_dev->bmdma[0]) { 191 pci_dev->config[UDIDETCR0] = val; 192 } else { 193 pci_dev->config[UDIDETCR1] = val; 194 } 195 break; 196 } 197 } 198 199 static const MemoryRegionOps cmd646_bmdma_ops = { 200 .read = bmdma_read, 201 .write = bmdma_write, 202 }; 203 204 static void bmdma_setup_bar(PCIIDEState *d) 205 { 206 BMDMAState *bm; 207 int i; 208 209 memory_region_init(&d->bmdma_bar, OBJECT(d), "cmd646-bmdma", 16); 210 for(i = 0;i < 2; i++) { 211 bm = &d->bmdma[i]; 212 memory_region_init_io(&bm->extra_io, OBJECT(d), &cmd646_bmdma_ops, bm, 213 "cmd646-bmdma-bus", 4); 214 memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io); 215 memory_region_init_io(&bm->addr_ioport, OBJECT(d), 216 &bmdma_addr_ioport_ops, bm, 217 "cmd646-bmdma-ioport", 4); 218 memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport); 219 } 220 } 221 222 /* XXX: call it also when the MRDMODE is changed from the PCI config 223 registers */ 224 static void cmd646_update_irq(PCIIDEState *d) 225 { 226 PCIDevice *pd = PCI_DEVICE(d); 227 int pci_level; 228 229 pci_level = ((pd->config[MRDMODE] & MRDMODE_INTR_CH0) && 230 !(pd->config[MRDMODE] & MRDMODE_BLK_CH0)) || 231 ((pd->config[MRDMODE] & MRDMODE_INTR_CH1) && 232 !(pd->config[MRDMODE] & MRDMODE_BLK_CH1)); 233 qemu_set_irq(pd->irq[0], pci_level); 234 } 235 236 /* the PCI irq level is the logical OR of the two channels */ 237 static void cmd646_set_irq(void *opaque, int channel, int level) 238 { 239 PCIIDEState *d = opaque; 240 PCIDevice *pd = PCI_DEVICE(d); 241 int irq_mask; 242 243 irq_mask = MRDMODE_INTR_CH0 << channel; 244 if (level) { 245 pd->config[MRDMODE] |= irq_mask; 246 } else { 247 pd->config[MRDMODE] &= ~irq_mask; 248 } 249 cmd646_update_irq(d); 250 } 251 252 static void cmd646_reset(void *opaque) 253 { 254 PCIIDEState *d = opaque; 255 unsigned int i; 256 257 for (i = 0; i < 2; i++) { 258 ide_bus_reset(&d->bus[i]); 259 } 260 } 261 262 /* CMD646 PCI IDE controller */ 263 static int pci_cmd646_ide_initfn(PCIDevice *dev) 264 { 265 PCIIDEState *d = PCI_IDE(dev); 266 uint8_t *pci_conf = dev->config; 267 qemu_irq *irq; 268 int i; 269 270 pci_conf[PCI_CLASS_PROG] = 0x8f; 271 272 pci_conf[0x51] = 0x04; // enable IDE0 273 if (d->secondary) { 274 /* XXX: if not enabled, really disable the seconday IDE controller */ 275 pci_conf[0x51] |= 0x08; /* enable IDE1 */ 276 } 277 278 setup_cmd646_bar(d, 0); 279 setup_cmd646_bar(d, 1); 280 pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[0].data); 281 pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[0].cmd); 282 pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[1].data); 283 pci_register_bar(dev, 3, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd646_bar[1].cmd); 284 bmdma_setup_bar(d); 285 pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar); 286 287 /* TODO: RST# value should be 0 */ 288 pci_conf[PCI_INTERRUPT_PIN] = 0x01; // interrupt on pin 1 289 290 irq = qemu_allocate_irqs(cmd646_set_irq, d, 2); 291 for (i = 0; i < 2; i++) { 292 ide_bus_new(&d->bus[i], sizeof(d->bus[i]), DEVICE(dev), i, 2); 293 ide_init2(&d->bus[i], irq[i]); 294 295 bmdma_init(&d->bus[i], &d->bmdma[i], d); 296 d->bmdma[i].bus = &d->bus[i]; 297 qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb, 298 &d->bmdma[i].dma); 299 } 300 301 vmstate_register(DEVICE(dev), 0, &vmstate_ide_pci, d); 302 qemu_register_reset(cmd646_reset, d); 303 return 0; 304 } 305 306 static void pci_cmd646_ide_exitfn(PCIDevice *dev) 307 { 308 PCIIDEState *d = PCI_IDE(dev); 309 unsigned i; 310 311 for (i = 0; i < 2; ++i) { 312 memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io); 313 memory_region_destroy(&d->bmdma[i].extra_io); 314 memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport); 315 memory_region_destroy(&d->bmdma[i].addr_ioport); 316 memory_region_destroy(&d->cmd646_bar[i].cmd); 317 memory_region_destroy(&d->cmd646_bar[i].data); 318 } 319 memory_region_destroy(&d->bmdma_bar); 320 } 321 322 void pci_cmd646_ide_init(PCIBus *bus, DriveInfo **hd_table, 323 int secondary_ide_enabled) 324 { 325 PCIDevice *dev; 326 327 dev = pci_create(bus, -1, "cmd646-ide"); 328 qdev_prop_set_uint32(&dev->qdev, "secondary", secondary_ide_enabled); 329 qdev_init_nofail(&dev->qdev); 330 331 pci_ide_create_devs(dev, hd_table); 332 } 333 334 static Property cmd646_ide_properties[] = { 335 DEFINE_PROP_UINT32("secondary", PCIIDEState, secondary, 0), 336 DEFINE_PROP_END_OF_LIST(), 337 }; 338 339 static void cmd646_ide_class_init(ObjectClass *klass, void *data) 340 { 341 DeviceClass *dc = DEVICE_CLASS(klass); 342 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 343 344 k->init = pci_cmd646_ide_initfn; 345 k->exit = pci_cmd646_ide_exitfn; 346 k->vendor_id = PCI_VENDOR_ID_CMD; 347 k->device_id = PCI_DEVICE_ID_CMD_646; 348 k->revision = 0x07; 349 k->class_id = PCI_CLASS_STORAGE_IDE; 350 dc->props = cmd646_ide_properties; 351 } 352 353 static const TypeInfo cmd646_ide_info = { 354 .name = "cmd646-ide", 355 .parent = TYPE_PCI_IDE, 356 .class_init = cmd646_ide_class_init, 357 }; 358 359 static void cmd646_ide_register_types(void) 360 { 361 type_register_static(&cmd646_ide_info); 362 } 363 364 type_init(cmd646_ide_register_types) 365