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
  28 typedef target_phys_addr_t pci_addr_t;
  29 #include "pci_host.h"
  30
  31 typedef PCIHostState UNINState;
  32
  33 static void pci_unin_main_config_writel (void *opaque, target_phys_addr_t addr,
  34                                          uint32_t val)
  35 {
  36     UNINState *s = opaque;
  37     int i;
  38
  39 #ifdef TARGET_WORDS_BIGENDIAN
  40     val = bswap32(val);
  41 #endif
  42
  43     for (i = 11; i < 32; i++) {
  44         if ((val & (1 << i)) != 0)
  45             break;
  46     }
  47 #if 0
  48     s->config_reg = 0x80000000 | (1 << 16) | (val & 0x7FC) | (i << 11);
  49 #else
  50     s->config_reg = 0x80000000 | (0 << 16) | (val & 0x7FC) | (i << 11);
  51 #endif
  52 }
  53
  54 static uint32_t pci_unin_main_config_readl (void *opaque,
  55                                             target_phys_addr_t addr)
  56 {
  57     UNINState *s = opaque;
  58     uint32_t val;
  59     int devfn;
  60
  61     devfn = (s->config_reg >> 8) & 0xFF;
  62     val = (1 << (devfn >> 3)) | ((devfn & 0x07) << 8) | (s->config_reg & 0xFC);
  63 #ifdef TARGET_WORDS_BIGENDIAN
  64     val = bswap32(val);
  65 #endif
  66
  67     return val;
  68 }
  69
  70 static CPUWriteMemoryFunc *pci_unin_main_config_write[] = {
  71     &pci_unin_main_config_writel,
  72     &pci_unin_main_config_writel,
  73     &pci_unin_main_config_writel,
  74 };
  75
  76 static CPUReadMemoryFunc *pci_unin_main_config_read[] = {
  77     &pci_unin_main_config_readl,
  78     &pci_unin_main_config_readl,
  79     &pci_unin_main_config_readl,
  80 };
  81
  82 static CPUWriteMemoryFunc *pci_unin_main_write[] = {
  83     &pci_host_data_writeb,
  84     &pci_host_data_writew,
  85     &pci_host_data_writel,
  86 };
  87
  88 static CPUReadMemoryFunc *pci_unin_main_read[] = {
  89     &pci_host_data_readb,
  90     &pci_host_data_readw,
  91     &pci_host_data_readl,
  92 };
  93
  94 #if 0
  95
  96 static void pci_unin_config_writel (void *opaque, target_phys_addr_t addr,
  97                                     uint32_t val)
  98 {
  99     UNINState *s = opaque;
 100
 101 #ifdef TARGET_WORDS_BIGENDIAN
 102     val = bswap32(val);
 103 #endif
 104     s->config_reg = 0x80000000 | (val & ~0x00000001);
 105 }
 106
 107 static uint32_t pci_unin_config_readl (void *opaque,
 108                                        target_phys_addr_t addr)
 109 {
 110     UNINState *s = opaque;
 111     uint32_t val;
 112
 113     val = (s->config_reg | 0x00000001) & ~0x80000000;
 114 #ifdef TARGET_WORDS_BIGENDIAN
 115     val = bswap32(val);
 116 #endif
 117
 118     return val;
 119 }
 120
 121 static CPUWriteMemoryFunc *pci_unin_config_write[] = {
 122     &pci_unin_config_writel,
 123     &pci_unin_config_writel,
 124     &pci_unin_config_writel,
 125 };
 126
 127 static CPUReadMemoryFunc *pci_unin_config_read[] = {
 128     &pci_unin_config_readl,
 129     &pci_unin_config_readl,
 130     &pci_unin_config_readl,
 131 };
 132
 133 static CPUWriteMemoryFunc *pci_unin_write[] = {
 134     &pci_host_pci_writeb,
 135     &pci_host_pci_writew,
 136     &pci_host_pci_writel,
 137 };
 138
 139 static CPUReadMemoryFunc *pci_unin_read[] = {
 140     &pci_host_pci_readb,
 141     &pci_host_pci_readw,
 142     &pci_host_pci_readl,
 143 };
 144 #endif
 145
 146 /* Don't know if this matches real hardware, but it agrees with OHW.  */
 147 static int pci_unin_map_irq(PCIDevice *pci_dev, int irq_num)
 148 {
 149     return (irq_num + (pci_dev->devfn >> 3)) & 3;
 150 }
 151
 152 static void pci_unin_set_irq(qemu_irq *pic, int irq_num, int level)
 153 {
 154     qemu_set_irq(pic[irq_num + 8], level);
 155 }
 156
 157 PCIBus *pci_pmac_init(qemu_irq *pic)
 158 {
 159     UNINState *s;
 160     PCIDevice *d;
 161     int pci_mem_config, pci_mem_data;
 162
 163     /* Use values found on a real PowerMac */
 164     /* Uninorth main bus */
 165     s = qemu_mallocz(sizeof(UNINState));
 166     s->bus = pci_register_bus(pci_unin_set_irq, pci_unin_map_irq,
 167                               pic, 11 << 3, 4);
 168
 169     pci_mem_config = cpu_register_io_memory(0, pci_unin_main_config_read,
 170                                             pci_unin_main_config_write, s);
 171     pci_mem_data = cpu_register_io_memory(0, pci_unin_main_read,
 172                                           pci_unin_main_write, s);
 173     cpu_register_physical_memory(0xf2800000, 0x1000, pci_mem_config);
 174     cpu_register_physical_memory(0xf2c00000, 0x1000, pci_mem_data);
 175     d = pci_register_device(s->bus, "Uni-north main", sizeof(PCIDevice),
 176                             11 << 3, NULL, NULL);
 177     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_APPLE);
 178     pci_config_set_device_id(d->config, PCI_DEVICE_ID_APPLE_UNI_N_PCI);
 179     d->config[0x08] = 0x00; // revision
 180     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
 181     d->config[0x0C] = 0x08; // cache_line_size
 182     d->config[0x0D] = 0x10; // latency_timer
 183     d->config[0x0E] = 0x00; // header_type
 184     d->config[0x34] = 0x00; // capabilities_pointer
 185
 186 #if 0 // XXX: not activated as PPC BIOS doesn't handle multiple buses properly
 187     /* pci-to-pci bridge */
 188     d = pci_register_device("Uni-north bridge", sizeof(PCIDevice), 0, 13 << 3,
 189                             NULL, NULL);
 190     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_DEC);
 191     pci_config_set_device_id(d->config, PCI_DEVICE_ID_DEC_21154);
 192     d->config[0x08] = 0x05; // revision
 193     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_PCI);
 194     d->config[0x0C] = 0x08; // cache_line_size
 195     d->config[0x0D] = 0x20; // latency_timer
 196     d->config[0x0E] = 0x01; // header_type
 197
 198     d->config[0x18] = 0x01; // primary_bus
 199     d->config[0x19] = 0x02; // secondary_bus
 200     d->config[0x1A] = 0x02; // subordinate_bus
 201     d->config[0x1B] = 0x20; // secondary_latency_timer
 202     d->config[0x1C] = 0x11; // io_base
 203     d->config[0x1D] = 0x01; // io_limit
 204     d->config[0x20] = 0x00; // memory_base
 205     d->config[0x21] = 0x80;
 206     d->config[0x22] = 0x00; // memory_limit
 207     d->config[0x23] = 0x80;
 208     d->config[0x24] = 0x01; // prefetchable_memory_base
 209     d->config[0x25] = 0x80;
 210     d->config[0x26] = 0xF1; // prefectchable_memory_limit
 211     d->config[0x27] = 0x7F;
 212     // d->config[0x34] = 0xdc // capabilities_pointer
 213 #endif
 214 #if 0 // XXX: not needed for now
 215     /* Uninorth AGP bus */
 216     s = &pci_bridge[1];
 217     pci_mem_config = cpu_register_io_memory(0, pci_unin_config_read,
 218                                             pci_unin_config_write, s);
 219     pci_mem_data = cpu_register_io_memory(0, pci_unin_read,
 220                                           pci_unin_write, s);
 221     cpu_register_physical_memory(0xf0800000, 0x1000, pci_mem_config);
 222     cpu_register_physical_memory(0xf0c00000, 0x1000, pci_mem_data);
 223
 224     d = pci_register_device("Uni-north AGP", sizeof(PCIDevice), 0, 11 << 3,
 225                             NULL, NULL);
 226     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_APPLE);
 227     pci_config_set_device_id(d->config, PCI_DEVICE_ID_APPLE_UNI_N_AGP);
 228     d->config[0x08] = 0x00; // revision
 229     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
 230     d->config[0x0C] = 0x08; // cache_line_size
 231     d->config[0x0D] = 0x10; // latency_timer
 232     d->config[0x0E] = 0x00; // header_type
 233     //    d->config[0x34] = 0x80; // capabilities_pointer
 234 #endif
 235
 236 #if 0 // XXX: not needed for now
 237     /* Uninorth internal bus */
 238     s = &pci_bridge[2];
 239     pci_mem_config = cpu_register_io_memory(0, pci_unin_config_read,
 240                                             pci_unin_config_write, s);
 241     pci_mem_data = cpu_register_io_memory(0, pci_unin_read,
 242                                           pci_unin_write, s);
 243     cpu_register_physical_memory(0xf4800000, 0x1000, pci_mem_config);
 244     cpu_register_physical_memory(0xf4c00000, 0x1000, pci_mem_data);
 245
 246     d = pci_register_device("Uni-north internal", sizeof(PCIDevice),
 247                             3, 11 << 3, NULL, NULL);
 248     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_APPLE);
 249     pci_config_set_device_id(d->config, PCI_DEVICE_ID_APPLE_UNI_N_I_PCI);
 250     d->config[0x08] = 0x00; // revision
 251     pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
 252     d->config[0x0C] = 0x08; // cache_line_size
 253     d->config[0x0D] = 0x10; // latency_timer
 254     d->config[0x0E] = 0x00; // header_type
 255     d->config[0x34] = 0x00; // capabilities_pointer
 256 #endif
 257     return s->bus;
 258 }