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 } UNINState;
  45
  46 static int pci_unin_map_irq(PCIDevice *pci_dev, int irq_num)
  47 {
  48     int retval;
  49     int devfn = pci_dev->devfn & 0x00FFFFFF;
  50
  51     retval = (((devfn >> 11) & 0x1F) + irq_num) & 3;
  52
  53     return retval;
  54 }
  55
  56 static void pci_unin_set_irq(void *opaque, int irq_num, int level)
  57 {
  58     qemu_irq *pic = opaque;
  59
  60     UNIN_DPRINTF("%s: setting INT %d = %d\n", __func__,
  61                  unin_irq_line[irq_num], level);
  62     qemu_set_irq(pic[unin_irq_line[irq_num]], level);
  63 }
  64
  65 static void pci_unin_reset(void *opaque)
  66 {
  67 }
  68
  69 static uint32_t unin_get_config_reg(uint32_t reg, uint32_t addr)
  70 {
  71     uint32_t retval;
  72
  73     if (reg & (1u << 31)) {
  74         /* XXX OpenBIOS compatibility hack */
  75         retval = reg | (addr & 3);
  76     } else if (reg & 1) {
  77         /* CFA1 style */
  78         retval = (reg & ~7u) | (addr & 7);
  79     } else {
  80         uint32_t slot, func;
  81
  82         /* Grab CFA0 style values */
  83         slot = ffs(reg & 0xfffff800) - 1;
  84         func = (reg >> 8) & 7;
  85
  86         /* ... and then convert them to x86 format */
  87         /* config pointer */
  88         retval = (reg & (0xff - 7)) | (addr & 7);
  89         /* slot */
  90         retval |= slot << 11;
  91         /* fn */
  92         retval |= func << 8;
  93     }
  94
  95
  96     UNIN_DPRINTF("Converted config space accessor %08x/%08x -> %08x\n",
  97                  reg, addr, retval);
  98
  99     return retval;
 100 }
 101
 102 static void unin_data_write(void *opaque, target_phys_addr_t addr,
 103                             uint64_t val, unsigned len)
 104 {
 105     UNINState *s = opaque;
 106     UNIN_DPRINTF("write addr %" TARGET_FMT_plx " len %d val %"PRIx64"\n",
 107                  addr, len, val);
 108     pci_data_write(s->host_state.bus,
 109                    unin_get_config_reg(s->host_state.config_reg, addr),
 110                    val, len);
 111 }
 112
 113 static uint64_t unin_data_read(void *opaque, target_phys_addr_t addr,
 114                                unsigned len)
 115 {
 116     UNINState *s = opaque;
 117     uint32_t val;
 118
 119     val = pci_data_read(s->host_state.bus,
 120                         unin_get_config_reg(s->host_state.config_reg, addr),
 121                         len);
 122     UNIN_DPRINTF("read addr %" TARGET_FMT_plx " len %d val %x\n",
 123                  addr, len, val);
 124     return val;
 125 }
 126
 127 static const MemoryRegionOps unin_data_ops = {
 128     .read = unin_data_read,
 129     .write = unin_data_write,
 130     .endianness = DEVICE_LITTLE_ENDIAN,
 131 };
 132
 133 static int pci_unin_main_init_device(SysBusDevice *dev)
 134 {
 135     UNINState *s;
 136
 137     /* Use values found on a real PowerMac */
 138     /* Uninorth main bus */
 139     s = FROM_SYSBUS(UNINState, dev);
 140
 141     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
 142                           &s->host_state, "pci-conf-idx", 0x1000);
 143     memory_region_init_io(&s->host_state.data_mem, &unin_data_ops, s,
 144                           "pci-conf-data", 0x1000);
 145     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
 146     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
 147
 148     qemu_register_reset(pci_unin_reset, &s->host_state);
 149     return 0;
 150 }
 151
 152
 153 static int pci_u3_agp_init_device(SysBusDevice *dev)
 154 {
 155     UNINState *s;
 156
 157     /* Uninorth U3 AGP bus */
 158     s = FROM_SYSBUS(UNINState, dev);
 159
 160     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
 161                           &s->host_state, "pci-conf-idx", 0x1000);
 162     memory_region_init_io(&s->host_state.data_mem, &unin_data_ops, s,
 163                           "pci-conf-data", 0x1000);
 164     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
 165     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
 166
 167     qemu_register_reset(pci_unin_reset, &s->host_state);
 168
 169     return 0;
 170 }
 171
 172 static int pci_unin_agp_init_device(SysBusDevice *dev)
 173 {
 174     UNINState *s;
 175
 176     /* Uninorth AGP bus */
 177     s = FROM_SYSBUS(UNINState, dev);
 178
 179     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
 180                           &s->host_state, "pci-conf-idx", 0x1000);
 181     memory_region_init_io(&s->host_state.data_mem, &pci_host_data_le_ops,
 182                           &s->host_state, "pci-conf-data", 0x1000);
 183     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
 184     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
 185     return 0;
 186 }
 187
 188 static int pci_unin_internal_init_device(SysBusDevice *dev)
 189 {
 190     UNINState *s;
 191
 192     /* Uninorth internal bus */
 193     s = FROM_SYSBUS(UNINState, dev);
 194
 195     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
 196                           &s->host_state, "pci-conf-idx", 0x1000);
 197     memory_region_init_io(&s->host_state.data_mem, &pci_host_data_le_ops,
 198                           &s->host_state, "pci-conf-data", 0x1000);
 199     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
 200     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
 201     return 0;
 202 }
 203
 204 PCIBus *pci_pmac_init(qemu_irq *pic,
 205                       MemoryRegion *address_space_mem,
 206                       MemoryRegion *address_space_io)
 207 {
 208     DeviceState *dev;
 209     SysBusDevice *s;
 210     UNINState *d;
 211
 212     /* Use values found on a real PowerMac */
 213     /* Uninorth main bus */
 214     dev = qdev_create(NULL, "uni-north");
 215     qdev_init_nofail(dev);
 216     s = sysbus_from_qdev(dev);
 217     d = FROM_SYSBUS(UNINState, s);
 218     d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
 219                                          pci_unin_set_irq, pci_unin_map_irq,
 220                                          pic,
 221                                          address_space_mem,
 222                                          address_space_io,
 223                                          PCI_DEVFN(11, 0), 4);
 224
 225 #if 0
 226     pci_create_simple(d->host_state.bus, PCI_DEVFN(11, 0), "uni-north");
 227 #endif
 228
 229     sysbus_mmio_map(s, 0, 0xf2800000);
 230     sysbus_mmio_map(s, 1, 0xf2c00000);
 231
 232     /* DEC 21154 bridge */
 233 #if 0
 234     /* XXX: not activated as PPC BIOS doesn't handle multiple buses properly */
 235     pci_create_simple(d->host_state.bus, PCI_DEVFN(12, 0), "dec-21154");
 236 #endif
 237
 238     /* Uninorth AGP bus */
 239     pci_create_simple(d->host_state.bus, PCI_DEVFN(11, 0), "uni-north-agp");
 240     dev = qdev_create(NULL, "uni-north-agp");
 241     qdev_init_nofail(dev);
 242     s = sysbus_from_qdev(dev);
 243     sysbus_mmio_map(s, 0, 0xf0800000);
 244     sysbus_mmio_map(s, 1, 0xf0c00000);
 245
 246     /* Uninorth internal bus */
 247 #if 0
 248     /* XXX: not needed for now */
 249     pci_create_simple(d->host_state.bus, PCI_DEVFN(14, 0), "uni-north-pci");
 250     dev = qdev_create(NULL, "uni-north-pci");
 251     qdev_init_nofail(dev);
 252     s = sysbus_from_qdev(dev);
 253     sysbus_mmio_map(s, 0, 0xf4800000);
 254     sysbus_mmio_map(s, 1, 0xf4c00000);
 255 #endif
 256
 257     return d->host_state.bus;
 258 }
 259
 260 PCIBus *pci_pmac_u3_init(qemu_irq *pic,
 261                          MemoryRegion *address_space_mem,
 262                          MemoryRegion *address_space_io)
 263 {
 264     DeviceState *dev;
 265     SysBusDevice *s;
 266     UNINState *d;
 267
 268     /* Uninorth AGP bus */
 269
 270     dev = qdev_create(NULL, "u3-agp");
 271     qdev_init_nofail(dev);
 272     s = sysbus_from_qdev(dev);
 273     d = FROM_SYSBUS(UNINState, s);
 274
 275     d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
 276                                          pci_unin_set_irq, pci_unin_map_irq,
 277                                          pic,
 278                                          address_space_mem,
 279                                          address_space_io,
 280                                          PCI_DEVFN(11, 0), 4);
 281
 282     sysbus_mmio_map(s, 0, 0xf0800000);
 283     sysbus_mmio_map(s, 1, 0xf0c00000);
 284
 285     pci_create_simple(d->host_state.bus, 11 << 3, "u3-agp");
 286
 287     return d->host_state.bus;
 288 }
 289
 290 static int unin_main_pci_host_init(PCIDevice *d)
 291 {
 292     d->config[0x0C] = 0x08; // cache_line_size
 293     d->config[0x0D] = 0x10; // latency_timer
 294     d->config[0x34] = 0x00; // capabilities_pointer
 295     return 0;
 296 }
 297
 298 static int unin_agp_pci_host_init(PCIDevice *d)
 299 {
 300     d->config[0x0C] = 0x08; // cache_line_size
 301     d->config[0x0D] = 0x10; // latency_timer
 302     //    d->config[0x34] = 0x80; // capabilities_pointer
 303     return 0;
 304 }
 305
 306 static int u3_agp_pci_host_init(PCIDevice *d)
 307 {
 308     /* cache line size */
 309     d->config[0x0C] = 0x08;
 310     /* latency timer */
 311     d->config[0x0D] = 0x10;
 312     return 0;
 313 }
 314
 315 static int unin_internal_pci_host_init(PCIDevice *d)
 316 {
 317     d->config[0x0C] = 0x08; // cache_line_size
 318     d->config[0x0D] = 0x10; // latency_timer
 319     d->config[0x34] = 0x00; // capabilities_pointer
 320     return 0;
 321 }
 322
 323 static PCIDeviceInfo unin_main_pci_host_info = {
 324     .qdev.name = "uni-north",
 325     .qdev.size = sizeof(PCIDevice),
 326     .init      = unin_main_pci_host_init,
 327     .vendor_id = PCI_VENDOR_ID_APPLE,
 328     .device_id = PCI_DEVICE_ID_APPLE_UNI_N_PCI,
 329     .revision  = 0x00,
 330     .class_id  = PCI_CLASS_BRIDGE_HOST,
 331 };
 332
 333 static PCIDeviceInfo u3_agp_pci_host_info = {
 334     .qdev.name = "u3-agp",
 335     .qdev.size = sizeof(PCIDevice),
 336     .init      = u3_agp_pci_host_init,
 337     .vendor_id = PCI_VENDOR_ID_APPLE,
 338     .device_id = PCI_DEVICE_ID_APPLE_U3_AGP,
 339     .revision  = 0x00,
 340     .class_id  = PCI_CLASS_BRIDGE_HOST,
 341 };
 342
 343 static PCIDeviceInfo unin_agp_pci_host_info = {
 344     .qdev.name = "uni-north-agp",
 345     .qdev.size = sizeof(PCIDevice),
 346     .init      = unin_agp_pci_host_init,
 347     .vendor_id = PCI_VENDOR_ID_APPLE,
 348     .device_id = PCI_DEVICE_ID_APPLE_UNI_N_AGP,
 349     .revision  = 0x00,
 350     .class_id  = PCI_CLASS_BRIDGE_HOST,
 351 };
 352
 353 static PCIDeviceInfo unin_internal_pci_host_info = {
 354     .qdev.name = "uni-north-pci",
 355     .qdev.size = sizeof(PCIDevice),
 356     .init      = unin_internal_pci_host_init,
 357     .vendor_id = PCI_VENDOR_ID_APPLE,
 358     .device_id = PCI_DEVICE_ID_APPLE_UNI_N_I_PCI,
 359     .revision  = 0x00,
 360     .class_id  = PCI_CLASS_BRIDGE_HOST,
 361 };
 362
 363 static void unin_register_devices(void)
 364 {
 365     sysbus_register_dev("uni-north", sizeof(UNINState),
 366                         pci_unin_main_init_device);
 367     pci_qdev_register(&unin_main_pci_host_info);
 368     sysbus_register_dev("u3-agp", sizeof(UNINState),
 369                         pci_u3_agp_init_device);
 370     pci_qdev_register(&u3_agp_pci_host_info);
 371     sysbus_register_dev("uni-north-agp", sizeof(UNINState),
 372                         pci_unin_agp_init_device);
 373     pci_qdev_register(&unin_agp_pci_host_info);
 374     sysbus_register_dev("uni-north-pci", sizeof(UNINState),
 375                         pci_unin_internal_init_device);
 376     pci_qdev_register(&unin_internal_pci_host_info);
 377 }
 378
 379 device_init(unin_register_devices)