hw/unin_pci.c

   1 /*
   2  * QEMU Uninorth PCI host (for all Mac99 and newer machines)
   3  *
   4  * Copyright (c) 2006 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "hw.h"
  25 #include "ppc_mac.h"
  26 #include "pci.h"
  27 #include "pci_host.h"
  28
  29 /* debug UniNorth */
  30 //#define DEBUG_UNIN
  31
  32 #ifdef DEBUG_UNIN
  33 #define UNIN_DPRINTF(fmt, ...)                                  \
  34     do { printf("UNIN: " fmt , ## __VA_ARGS__); } while (0)
  35 #else
  36 #define UNIN_DPRINTF(fmt, ...)
  37 #endif
  38
  39 static const int unin_irq_line[] = { 0x1b, 0x1c, 0x1d, 0x1e };
  40
  41 typedef struct UNINState {
  42     SysBusDevice busdev;
  43     PCIHostState host_state;
  44     MemoryRegion pci_mmio;
  45     MemoryRegion pci_hole;
  46 } UNINState;
  47
  48 static int pci_unin_map_irq(PCIDevice *pci_dev, int irq_num)
  49 {
  50     int retval;
  51     int devfn = pci_dev->devfn & 0x00FFFFFF;
  52
  53     retval = (((devfn >> 11) & 0x1F) + irq_num) & 3;
  54
  55     return retval;
  56 }
  57
  58 static void pci_unin_set_irq(void *opaque, int irq_num, int level)
  59 {
  60     qemu_irq *pic = opaque;
  61
  62     UNIN_DPRINTF("%s: setting INT %d = %d\n", __func__,
  63                  unin_irq_line[irq_num], level);
  64     qemu_set_irq(pic[unin_irq_line[irq_num]], level);
  65 }
  66
  67 static void pci_unin_reset(void *opaque)
  68 {
  69 }
  70
  71 static uint32_t unin_get_config_reg(uint32_t reg, uint32_t addr)
  72 {
  73     uint32_t retval;
  74
  75     if (reg & (1u << 31)) {
  76         /* XXX OpenBIOS compatibility hack */
  77         retval = reg | (addr & 3);
  78     } else if (reg & 1) {
  79         /* CFA1 style */
  80         retval = (reg & ~7u) | (addr & 7);
  81     } else {
  82         uint32_t slot, func;
  83
  84         /* Grab CFA0 style values */
  85         slot = ffs(reg & 0xfffff800) - 1;
  86         func = (reg >> 8) & 7;
  87
  88         /* ... and then convert them to x86 format */
  89         /* config pointer */
  90         retval = (reg & (0xff - 7)) | (addr & 7);
  91         /* slot */
  92         retval |= slot << 11;
  93         /* fn */
  94         retval |= func << 8;
  95     }
  96
  97
  98     UNIN_DPRINTF("Converted config space accessor %08x/%08x -> %08x\n",
  99                  reg, addr, retval);
 100
 101     return retval;
 102 }
 103
 104 static void unin_data_write(void *opaque, target_phys_addr_t addr,
 105                             uint64_t val, unsigned len)
 106 {
 107     UNINState *s = opaque;
 108     UNIN_DPRINTF("write addr %" TARGET_FMT_plx " len %d val %"PRIx64"\n",
 109                  addr, len, val);
 110     pci_data_write(s->host_state.bus,
 111                    unin_get_config_reg(s->host_state.config_reg, addr),
 112                    val, len);
 113 }
 114
 115 static uint64_t unin_data_read(void *opaque, target_phys_addr_t addr,
 116                                unsigned len)
 117 {
 118     UNINState *s = opaque;
 119     uint32_t val;
 120
 121     val = pci_data_read(s->host_state.bus,
 122                         unin_get_config_reg(s->host_state.config_reg, addr),
 123                         len);
 124     UNIN_DPRINTF("read addr %" TARGET_FMT_plx " len %d val %x\n",
 125                  addr, len, val);
 126     return val;
 127 }
 128
 129 static const MemoryRegionOps unin_data_ops = {
 130     .read = unin_data_read,
 131     .write = unin_data_write,
 132     .endianness = DEVICE_LITTLE_ENDIAN,
 133 };
 134
 135 static int pci_unin_main_init_device(SysBusDevice *dev)
 136 {
 137     UNINState *s;
 138
 139     /* Use values found on a real PowerMac */
 140     /* Uninorth main bus */
 141     s = FROM_SYSBUS(UNINState, dev);
 142
 143     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
 144                           &s->host_state, "pci-conf-idx", 0x1000);
 145     memory_region_init_io(&s->host_state.data_mem, &unin_data_ops, s,
 146                           "pci-conf-data", 0x1000);
 147     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
 148     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
 149
 150     qemu_register_reset(pci_unin_reset, &s->host_state);
 151     return 0;
 152 }
 153
 154
 155 static int pci_u3_agp_init_device(SysBusDevice *dev)
 156 {
 157     UNINState *s;
 158
 159     /* Uninorth U3 AGP bus */
 160     s = FROM_SYSBUS(UNINState, dev);
 161
 162     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
 163                           &s->host_state, "pci-conf-idx", 0x1000);
 164     memory_region_init_io(&s->host_state.data_mem, &unin_data_ops, s,
 165                           "pci-conf-data", 0x1000);
 166     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
 167     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
 168
 169     qemu_register_reset(pci_unin_reset, &s->host_state);
 170
 171     return 0;
 172 }
 173
 174 static int pci_unin_agp_init_device(SysBusDevice *dev)
 175 {
 176     UNINState *s;
 177
 178     /* Uninorth AGP bus */
 179     s = FROM_SYSBUS(UNINState, dev);
 180
 181     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
 182                           &s->host_state, "pci-conf-idx", 0x1000);
 183     memory_region_init_io(&s->host_state.data_mem, &pci_host_data_le_ops,
 184                           &s->host_state, "pci-conf-data", 0x1000);
 185     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
 186     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
 187     return 0;
 188 }
 189
 190 static int pci_unin_internal_init_device(SysBusDevice *dev)
 191 {
 192     UNINState *s;
 193
 194     /* Uninorth internal bus */
 195     s = FROM_SYSBUS(UNINState, dev);
 196
 197     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
 198                           &s->host_state, "pci-conf-idx", 0x1000);
 199     memory_region_init_io(&s->host_state.data_mem, &pci_host_data_le_ops,
 200                           &s->host_state, "pci-conf-data", 0x1000);
 201     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
 202     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
 203     return 0;
 204 }
 205
 206 PCIBus *pci_pmac_init(qemu_irq *pic,
 207                       MemoryRegion *address_space_mem,
 208                       MemoryRegion *address_space_io)
 209 {
 210     DeviceState *dev;
 211     SysBusDevice *s;
 212     UNINState *d;
 213
 214     /* Use values found on a real PowerMac */
 215     /* Uninorth main bus */
 216     dev = qdev_create(NULL, "uni-north");
 217     qdev_init_nofail(dev);
 218     s = sysbus_from_qdev(dev);
 219     d = FROM_SYSBUS(UNINState, s);
 220     memory_region_init(&d->pci_mmio, "pci-mmio", 0x100000000ULL);
 221     memory_region_init_alias(&d->pci_hole, "pci-hole", &d->pci_mmio,
 222                              0x80000000ULL, 0x70000000ULL);
 223     memory_region_add_subregion(address_space_mem, 0x80000000ULL,
 224                                 &d->pci_hole);
 225
 226     d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
 227                                          pci_unin_set_irq, pci_unin_map_irq,
 228                                          pic,
 229                                          &d->pci_mmio,
 230                                          address_space_io,
 231                                          PCI_DEVFN(11, 0), 4);
 232
 233 #if 0
 234     pci_create_simple(d->host_state.bus, PCI_DEVFN(11, 0), "uni-north");
 235 #endif
 236
 237     sysbus_mmio_map(s, 0, 0xf2800000);
 238     sysbus_mmio_map(s, 1, 0xf2c00000);
 239
 240     /* DEC 21154 bridge */
 241 #if 0
 242     /* XXX: not activated as PPC BIOS doesn't handle multiple buses properly */
 243     pci_create_simple(d->host_state.bus, PCI_DEVFN(12, 0), "dec-21154");
 244 #endif
 245
 246     /* Uninorth AGP bus */
 247     pci_create_simple(d->host_state.bus, PCI_DEVFN(11, 0), "uni-north-agp");
 248     dev = qdev_create(NULL, "uni-north-agp");
 249     qdev_init_nofail(dev);
 250     s = sysbus_from_qdev(dev);
 251     sysbus_mmio_map(s, 0, 0xf0800000);
 252     sysbus_mmio_map(s, 1, 0xf0c00000);
 253
 254     /* Uninorth internal bus */
 255 #if 0
 256     /* XXX: not needed for now */
 257     pci_create_simple(d->host_state.bus, PCI_DEVFN(14, 0), "uni-north-pci");
 258     dev = qdev_create(NULL, "uni-north-pci");
 259     qdev_init_nofail(dev);
 260     s = sysbus_from_qdev(dev);
 261     sysbus_mmio_map(s, 0, 0xf4800000);
 262     sysbus_mmio_map(s, 1, 0xf4c00000);
 263 #endif
 264
 265     return d->host_state.bus;
 266 }
 267
 268 PCIBus *pci_pmac_u3_init(qemu_irq *pic,
 269                          MemoryRegion *address_space_mem,
 270                          MemoryRegion *address_space_io)
 271 {
 272     DeviceState *dev;
 273     SysBusDevice *s;
 274     UNINState *d;
 275
 276     /* Uninorth AGP bus */
 277
 278     dev = qdev_create(NULL, "u3-agp");
 279     qdev_init_nofail(dev);
 280     s = sysbus_from_qdev(dev);
 281     d = FROM_SYSBUS(UNINState, s);
 282
 283     memory_region_init(&d->pci_mmio, "pci-mmio", 0x100000000ULL);
 284     memory_region_init_alias(&d->pci_hole, "pci-hole", &d->pci_mmio,
 285                              0x80000000ULL, 0x70000000ULL);
 286     memory_region_add_subregion(address_space_mem, 0x80000000ULL,
 287                                 &d->pci_hole);
 288
 289     d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
 290                                          pci_unin_set_irq, pci_unin_map_irq,
 291                                          pic,
 292                                          &d->pci_mmio,
 293                                          address_space_io,
 294                                          PCI_DEVFN(11, 0), 4);
 295
 296     sysbus_mmio_map(s, 0, 0xf0800000);
 297     sysbus_mmio_map(s, 1, 0xf0c00000);
 298
 299     pci_create_simple(d->host_state.bus, 11 << 3, "u3-agp");
 300
 301     return d->host_state.bus;
 302 }
 303
 304 static int unin_main_pci_host_init(PCIDevice *d)
 305 {
 306     d->config[0x0C] = 0x08; // cache_line_size
 307     d->config[0x0D] = 0x10; // latency_timer
 308     d->config[0x34] = 0x00; // capabilities_pointer
 309     return 0;
 310 }
 311
 312 static int unin_agp_pci_host_init(PCIDevice *d)
 313 {
 314     d->config[0x0C] = 0x08; // cache_line_size
 315     d->config[0x0D] = 0x10; // latency_timer
 316     //    d->config[0x34] = 0x80; // capabilities_pointer
 317     return 0;
 318 }
 319
 320 static int u3_agp_pci_host_init(PCIDevice *d)
 321 {
 322     /* cache line size */
 323     d->config[0x0C] = 0x08;
 324     /* latency timer */
 325     d->config[0x0D] = 0x10;
 326     return 0;
 327 }
 328
 329 static int unin_internal_pci_host_init(PCIDevice *d)
 330 {
 331     d->config[0x0C] = 0x08; // cache_line_size
 332     d->config[0x0D] = 0x10; // latency_timer
 333     d->config[0x34] = 0x00; // capabilities_pointer
 334     return 0;
 335 }
 336
 337 static PCIDeviceInfo unin_main_pci_host_info = {
 338     .qdev.name = "uni-north",
 339     .qdev.size = sizeof(PCIDevice),
 340     .init      = unin_main_pci_host_init,
 341     .vendor_id = PCI_VENDOR_ID_APPLE,
 342     .device_id = PCI_DEVICE_ID_APPLE_UNI_N_PCI,
 343     .revision  = 0x00,
 344     .class_id  = PCI_CLASS_BRIDGE_HOST,
 345 };
 346
 347 static PCIDeviceInfo u3_agp_pci_host_info = {
 348     .qdev.name = "u3-agp",
 349     .qdev.size = sizeof(PCIDevice),
 350     .init      = u3_agp_pci_host_init,
 351     .vendor_id = PCI_VENDOR_ID_APPLE,
 352     .device_id = PCI_DEVICE_ID_APPLE_U3_AGP,
 353     .revision  = 0x00,
 354     .class_id  = PCI_CLASS_BRIDGE_HOST,
 355 };
 356
 357 static PCIDeviceInfo unin_agp_pci_host_info = {
 358     .qdev.name = "uni-north-agp",
 359     .qdev.size = sizeof(PCIDevice),
 360     .init      = unin_agp_pci_host_init,
 361     .vendor_id = PCI_VENDOR_ID_APPLE,
 362     .device_id = PCI_DEVICE_ID_APPLE_UNI_N_AGP,
 363     .revision  = 0x00,
 364     .class_id  = PCI_CLASS_BRIDGE_HOST,
 365 };
 366
 367 static PCIDeviceInfo unin_internal_pci_host_info = {
 368     .qdev.name = "uni-north-pci",
 369     .qdev.size = sizeof(PCIDevice),
 370     .init      = unin_internal_pci_host_init,
 371     .vendor_id = PCI_VENDOR_ID_APPLE,
 372     .device_id = PCI_DEVICE_ID_APPLE_UNI_N_I_PCI,
 373     .revision  = 0x00,
 374     .class_id  = PCI_CLASS_BRIDGE_HOST,
 375 };
 376
 377 static void unin_register_devices(void)
 378 {
 379     sysbus_register_dev("uni-north", sizeof(UNINState),
 380                         pci_unin_main_init_device);
 381     pci_qdev_register(&unin_main_pci_host_info);
 382     sysbus_register_dev("u3-agp", sizeof(UNINState),
 383                         pci_u3_agp_init_device);
 384     pci_qdev_register(&u3_agp_pci_host_info);
 385     sysbus_register_dev("uni-north-agp", sizeof(UNINState),
 386                         pci_unin_agp_init_device);
 387     pci_qdev_register(&unin_agp_pci_host_info);
 388     sysbus_register_dev("uni-north-pci", sizeof(UNINState),
 389                         pci_unin_internal_init_device);
 390     pci_qdev_register(&unin_internal_pci_host_info);
 391 }
 392
 393 device_init(unin_register_devices)