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     ReadWriteHandler data_handler;
  45 } UNINState;
  46
  47 static int pci_unin_map_irq(PCIDevice *pci_dev, int irq_num)
  48 {
  49     int retval;
  50     int devfn = pci_dev->devfn & 0x00FFFFFF;
  51
  52     retval = (((devfn >> 11) & 0x1F) + irq_num) & 3;
  53
  54     return retval;
  55 }
  56
  57 static void pci_unin_set_irq(void *opaque, int irq_num, int level)
  58 {
  59     qemu_irq *pic = opaque;
  60
  61     UNIN_DPRINTF("%s: setting INT %d = %d\n", __func__,
  62                  unin_irq_line[irq_num], level);
  63     qemu_set_irq(pic[unin_irq_line[irq_num]], level);
  64 }
  65
  66 static void pci_unin_save(QEMUFile* f, void *opaque)
  67 {
  68     PCIDevice *d = opaque;
  69
  70     pci_device_save(d, f);
  71 }
  72
  73 static int pci_unin_load(QEMUFile* f, void *opaque, int version_id)
  74 {
  75     PCIDevice *d = opaque;
  76
  77     if (version_id != 1)
  78         return -EINVAL;
  79
  80     return pci_device_load(d, f);
  81 }
  82
  83 static void pci_unin_reset(void *opaque)
  84 {
  85 }
  86
  87 static uint32_t unin_get_config_reg(uint32_t reg, uint32_t addr)
  88 {
  89     uint32_t retval;
  90
  91     if (reg & (1u << 31)) {
  92         /* XXX OpenBIOS compatibility hack */
  93         retval = reg | (addr & 3);
  94     } else if (reg & 1) {
  95         /* CFA1 style */
  96         retval = (reg & ~7u) | (addr & 7);
  97     } else {
  98         uint32_t slot, func;
  99
 100         /* Grab CFA0 style values */
 101         slot = ffs(reg & 0xfffff800) - 1;
 102         func = (reg >> 8) & 7;
 103
 104         /* ... and then convert them to x86 format */
 105         /* config pointer */
 106         retval = (reg & (0xff - 7)) | (addr & 7);
 107         /* slot */
 108         retval |= slot << 11;
 109         /* fn */
 110         retval |= func << 8;
 111     }
 112
 113
 114     UNIN_DPRINTF("Converted config space accessor %08x/%08x -> %08x\n",
 115                  reg, addr, retval);
 116
 117     return retval;
 118 }
 119
 120 static void unin_data_write(ReadWriteHandler *handler,
 121                             pcibus_t addr, uint32_t val, int len)
 122 {
 123     UNINState *s = container_of(handler, UNINState, data_handler);
 124 #ifdef TARGET_WORDS_BIGENDIAN
 125     val = qemu_bswap_len(val, len);
 126 #endif
 127     UNIN_DPRINTF("write addr %" FMT_PCIBUS " len %d val %x\n", addr, len, val);
 128     pci_data_write(s->host_state.bus,
 129                    unin_get_config_reg(s->host_state.config_reg, addr),
 130                    val, len);
 131 }
 132
 133 static uint32_t unin_data_read(ReadWriteHandler *handler,
 134                                pcibus_t addr, int len)
 135 {
 136     UNINState *s = container_of(handler, UNINState, data_handler);
 137     uint32_t val;
 138
 139     val = pci_data_read(s->host_state.bus,
 140                         unin_get_config_reg(s->host_state.config_reg, addr),
 141                         len);
 142     UNIN_DPRINTF("read addr %" FMT_PCIBUS " len %d val %x\n", addr, len, val);
 143 #ifdef TARGET_WORDS_BIGENDIAN
 144     val = qemu_bswap_len(val, len);
 145 #endif
 146     return val;
 147 }
 148
 149 static int pci_unin_main_init_device(SysBusDevice *dev)
 150 {
 151     UNINState *s;
 152     int pci_mem_config, pci_mem_data;
 153
 154     /* Use values found on a real PowerMac */
 155     /* Uninorth main bus */
 156     s = FROM_SYSBUS(UNINState, dev);
 157
 158     pci_mem_config = pci_host_conf_register_mmio(&s->host_state);
 159     s->data_handler.read = unin_data_read;
 160     s->data_handler.write = unin_data_write;
 161     pci_mem_data = cpu_register_io_memory_simple(&s->data_handler);
 162     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
 163     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
 164
 165     register_savevm("uninorth", 0, 1, pci_unin_save, pci_unin_load, &s->host_state);
 166     qemu_register_reset(pci_unin_reset, &s->host_state);
 167     return 0;
 168 }
 169
 170 static int pci_u3_agp_init_device(SysBusDevice *dev)
 171 {
 172     UNINState *s;
 173     int pci_mem_config, pci_mem_data;
 174
 175     /* Uninorth U3 AGP bus */
 176     s = FROM_SYSBUS(UNINState, dev);
 177
 178     pci_mem_config = pci_host_conf_register_mmio(&s->host_state);
 179     s->data_handler.read = unin_data_read;
 180     s->data_handler.write = unin_data_write;
 181     pci_mem_data = cpu_register_io_memory_simple(&s->data_handler);
 182     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
 183     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
 184
 185     register_savevm("uninorth", 0, 1, pci_unin_save, pci_unin_load, &s->host_state);
 186     qemu_register_reset(pci_unin_reset, &s->host_state);
 187
 188     return 0;
 189 }
 190
 191 static int pci_unin_agp_init_device(SysBusDevice *dev)
 192 {
 193     UNINState *s;
 194     int pci_mem_config, pci_mem_data;
 195
 196     /* Uninorth AGP bus */
 197     s = FROM_SYSBUS(UNINState, dev);
 198
 199     pci_mem_config = pci_host_conf_register_mmio_noswap(&s->host_state);
 200     pci_mem_data = pci_host_data_register_mmio(&s->host_state);
 201     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
 202     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
 203     return 0;
 204 }
 205
 206 static int pci_unin_internal_init_device(SysBusDevice *dev)
 207 {
 208     UNINState *s;
 209     int pci_mem_config, pci_mem_data;
 210
 211     /* Uninorth internal bus */
 212     s = FROM_SYSBUS(UNINState, dev);
 213
 214     pci_mem_config = pci_host_conf_register_mmio_noswap(&s->host_state);
 215     pci_mem_data = pci_host_data_register_mmio(&s->host_state);
 216     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
 217     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
 218     return 0;
 219 }
 220
 221 PCIBus *pci_pmac_init(qemu_irq *pic)
 222 {
 223     DeviceState *dev;
 224     SysBusDevice *s;
 225     UNINState *d;
 226
 227     /* Use values found on a real PowerMac */
 228     /* Uninorth main bus */
 229     dev = qdev_create(NULL, "uni-north");
 230     qdev_init_nofail(dev);
 231     s = sysbus_from_qdev(dev);
 232     d = FROM_SYSBUS(UNINState, s);
 233     d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
 234                                          pci_unin_set_irq, pci_unin_map_irq,
 235                                          pic, 11 << 3, 4);
 236
 237 #if 0
 238     pci_create_simple(d->host_state.bus, 11 << 3, "uni-north");
 239 #endif
 240
 241     sysbus_mmio_map(s, 0, 0xf2800000);
 242     sysbus_mmio_map(s, 1, 0xf2c00000);
 243
 244     /* DEC 21154 bridge */
 245 #if 0
 246     /* XXX: not activated as PPC BIOS doesn't handle multiple buses properly */
 247     pci_create_simple(d->host_state.bus, 12 << 3, "dec-21154");
 248 #endif
 249
 250     /* Uninorth AGP bus */
 251     pci_create_simple(d->host_state.bus, 11 << 3, "uni-north-agp");
 252     dev = qdev_create(NULL, "uni-north-agp");
 253     qdev_init_nofail(dev);
 254     s = sysbus_from_qdev(dev);
 255     sysbus_mmio_map(s, 0, 0xf0800000);
 256     sysbus_mmio_map(s, 1, 0xf0c00000);
 257
 258     /* Uninorth internal bus */
 259 #if 0
 260     /* XXX: not needed for now */
 261     pci_create_simple(d->host_state.bus, 14 << 3, "uni-north-pci");
 262     dev = qdev_create(NULL, "uni-north-pci");
 263     qdev_init_nofail(dev);
 264     s = sysbus_from_qdev(dev);
 265     sysbus_mmio_map(s, 0, 0xf4800000);
 266     sysbus_mmio_map(s, 1, 0xf4c00000);
 267 #endif
 268
 269     return d->host_state.bus;
 270 }
 271
 272 PCIBus *pci_pmac_u3_init(qemu_irq *pic)
 273 {
 274     DeviceState *dev;
 275     SysBusDevice *s;
 276     UNINState *d;
 277
 278     /* Uninorth AGP bus */
 279
 280     dev = qdev_create(NULL, "u3-agp");
 281     qdev_init_nofail(dev);
 282     s = sysbus_from_qdev(dev);
 283     d = FROM_SYSBUS(UNINState, s);
 284
 285     d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
 286                                          pci_unin_set_irq, pci_unin_map_irq,
 287                                          pic, 11 << 3, 4);
 288
 289     sysbus_mmio_map(s, 0, 0xf0800000);
 290     sysbus_mmio_map(s, 1, 0xf0c00000);
 291
 292     pci_create_simple(d->host_state.bus, 11 << 3, "u3-agp");
 293
 294     return d->host_state.bus;
 295 }
 296
 297 static int unin_main_pci_host_init(PCIDevice *d)
 298 {
 299     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_APPLE);
 300     pci_config_set_device_id(d->config, PCI_DEVICE_ID_APPLE_UNI_N_PCI);
 301     d->config[0x08] = 0x00; // revision
 302     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
 303     d->config[0x0C] = 0x08; // cache_line_size
 304     d->config[0x0D] = 0x10; // latency_timer
 305     d->config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
 306     d->config[0x34] = 0x00; // capabilities_pointer
 307     return 0;
 308 }
 309
 310 static int unin_agp_pci_host_init(PCIDevice *d)
 311 {
 312     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_APPLE);
 313     pci_config_set_device_id(d->config, PCI_DEVICE_ID_APPLE_UNI_N_AGP);
 314     d->config[0x08] = 0x00; // revision
 315     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
 316     d->config[0x0C] = 0x08; // cache_line_size
 317     d->config[0x0D] = 0x10; // latency_timer
 318     d->config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
 319     //    d->config[0x34] = 0x80; // capabilities_pointer
 320     return 0;
 321 }
 322
 323 static int u3_agp_pci_host_init(PCIDevice *d)
 324 {
 325     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_APPLE);
 326     pci_config_set_device_id(d->config, PCI_DEVICE_ID_APPLE_U3_AGP);
 327     /* revision */
 328     d->config[0x08] = 0x00;
 329     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
 330     /* cache line size */
 331     d->config[0x0C] = 0x08;
 332     /* latency timer */
 333     d->config[0x0D] = 0x10;
 334     d->config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL;
 335     return 0;
 336 }
 337
 338 static int unin_internal_pci_host_init(PCIDevice *d)
 339 {
 340     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_APPLE);
 341     pci_config_set_device_id(d->config, PCI_DEVICE_ID_APPLE_UNI_N_I_PCI);
 342     d->config[0x08] = 0x00; // revision
 343     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
 344     d->config[0x0C] = 0x08; // cache_line_size
 345     d->config[0x0D] = 0x10; // latency_timer
 346     d->config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
 347     d->config[0x34] = 0x00; // capabilities_pointer
 348     return 0;
 349 }
 350
 351 static PCIDeviceInfo unin_main_pci_host_info = {
 352     .qdev.name = "uni-north",
 353     .qdev.size = sizeof(PCIDevice),
 354     .init      = unin_main_pci_host_init,
 355 };
 356
 357 static PCIDeviceInfo u3_agp_pci_host_info = {
 358     .qdev.name = "u3-agp",
 359     .qdev.size = sizeof(PCIDevice),
 360     .init      = u3_agp_pci_host_init,
 361 };
 362
 363 static PCIDeviceInfo unin_agp_pci_host_info = {
 364     .qdev.name = "uni-north-agp",
 365     .qdev.size = sizeof(PCIDevice),
 366     .init      = unin_agp_pci_host_init,
 367 };
 368
 369 static PCIDeviceInfo unin_internal_pci_host_info = {
 370     .qdev.name = "uni-north-pci",
 371     .qdev.size = sizeof(PCIDevice),
 372     .init      = unin_internal_pci_host_init,
 373 };
 374
 375 static void unin_register_devices(void)
 376 {
 377     sysbus_register_dev("uni-north", sizeof(UNINState),
 378                         pci_unin_main_init_device);
 379     pci_qdev_register(&unin_main_pci_host_info);
 380     sysbus_register_dev("u3-agp", sizeof(UNINState),
 381                         pci_u3_agp_init_device);
 382     pci_qdev_register(&u3_agp_pci_host_info);
 383     sysbus_register_dev("uni-north-agp", sizeof(UNINState),
 384                         pci_unin_agp_init_device);
 385     pci_qdev_register(&unin_agp_pci_host_info);
 386     sysbus_register_dev("uni-north-pci", sizeof(UNINState),
 387                         pci_unin_internal_init_device);
 388     pci_qdev_register(&unin_internal_pci_host_info);
 389 }
 390
 391 device_init(unin_register_devices)