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