1 /* 2 * QEMU IDE Emulation: PCI VIA82C686B support. 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * Copyright (c) 2006 Openedhand Ltd. 6 * Copyright (c) 2010 Huacai Chen <zltjiangshi@gmail.com> 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 */ 26 27 #include "qemu/osdep.h" 28 #include "hw/pci/pci.h" 29 #include "migration/vmstate.h" 30 #include "qemu/module.h" 31 #include "qemu/range.h" 32 #include "sysemu/dma.h" 33 #include "hw/isa/vt82c686.h" 34 #include "hw/ide/pci.h" 35 #include "hw/irq.h" 36 #include "ide-internal.h" 37 #include "trace.h" 38 39 static uint64_t bmdma_read(void *opaque, hwaddr addr, 40 unsigned size) 41 { 42 BMDMAState *bm = opaque; 43 uint32_t val; 44 45 if (size != 1) { 46 return ((uint64_t)1 << (size * 8)) - 1; 47 } 48 49 switch (addr & 3) { 50 case 0: 51 val = bm->cmd; 52 break; 53 case 2: 54 val = bm->status; 55 break; 56 default: 57 val = 0xff; 58 break; 59 } 60 61 trace_bmdma_read_via(addr, val); 62 return val; 63 } 64 65 static void bmdma_write(void *opaque, hwaddr addr, 66 uint64_t val, unsigned size) 67 { 68 BMDMAState *bm = opaque; 69 70 if (size != 1) { 71 return; 72 } 73 74 trace_bmdma_write_via(addr, val); 75 switch (addr & 3) { 76 case 0: 77 bmdma_cmd_writeb(bm, val); 78 break; 79 case 2: 80 bmdma_status_writeb(bm, val); 81 break; 82 default:; 83 } 84 } 85 86 static const MemoryRegionOps via_bmdma_ops = { 87 .read = bmdma_read, 88 .write = bmdma_write, 89 }; 90 91 static void bmdma_setup_bar(PCIIDEState *d) 92 { 93 int i; 94 95 memory_region_init(&d->bmdma_bar, OBJECT(d), "via-bmdma-container", 16); 96 for (i = 0; i < ARRAY_SIZE(d->bmdma); i++) { 97 BMDMAState *bm = &d->bmdma[i]; 98 99 memory_region_init_io(&bm->extra_io, OBJECT(d), &via_bmdma_ops, bm, 100 "via-bmdma", 4); 101 memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io); 102 memory_region_init_io(&bm->addr_ioport, OBJECT(d), 103 &bmdma_addr_ioport_ops, bm, "bmdma", 4); 104 memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport); 105 } 106 } 107 108 static void via_ide_set_irq(void *opaque, int n, int level) 109 { 110 PCIIDEState *s = opaque; 111 PCIDevice *d = PCI_DEVICE(s); 112 113 if (level) { 114 d->config[0x70 + n * 8] |= 0x80; 115 } else { 116 d->config[0x70 + n * 8] &= ~0x80; 117 } 118 119 qemu_set_irq(s->isa_irq[n], level); 120 } 121 122 static void via_ide_reset(DeviceState *dev) 123 { 124 PCIIDEState *d = PCI_IDE(dev); 125 PCIDevice *pd = PCI_DEVICE(dev); 126 uint8_t *pci_conf = pd->config; 127 int i; 128 129 for (i = 0; i < ARRAY_SIZE(d->bus); i++) { 130 ide_bus_reset(&d->bus[i]); 131 } 132 133 pci_config_set_prog_interface(pci_conf, 0x8a); /* legacy mode */ 134 pci_ide_update_mode(d); 135 136 pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_WAIT); 137 pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK | 138 PCI_STATUS_DEVSEL_MEDIUM); 139 140 pci_set_byte(pci_conf + PCI_INTERRUPT_LINE, 0xe); 141 142 /* IDE chip enable, IDE configuration 1/2, IDE FIFO Configuration*/ 143 pci_set_long(pci_conf + 0x40, 0x0a090600); 144 /* IDE misc configuration 1/2/3 */ 145 pci_set_long(pci_conf + 0x44, 0x00c00068); 146 /* IDE Timing control */ 147 pci_set_long(pci_conf + 0x48, 0xa8a8a8a8); 148 /* IDE Address Setup Time */ 149 pci_set_long(pci_conf + 0x4c, 0x000000ff); 150 /* UltraDMA Extended Timing Control*/ 151 pci_set_long(pci_conf + 0x50, 0x07070707); 152 /* UltraDMA FIFO Control */ 153 pci_set_long(pci_conf + 0x54, 0x00000004); 154 /* IDE primary sector size */ 155 pci_set_long(pci_conf + 0x60, 0x00000200); 156 /* IDE secondary sector size */ 157 pci_set_long(pci_conf + 0x68, 0x00000200); 158 /* PCI PM Block */ 159 pci_set_long(pci_conf + 0xc0, 0x00020001); 160 } 161 162 static uint32_t via_ide_cfg_read(PCIDevice *pd, uint32_t addr, int len) 163 { 164 uint32_t val = pci_default_read_config(pd, addr, len); 165 uint8_t mode = pd->config[PCI_CLASS_PROG]; 166 167 if ((mode & 0xf) == 0xa) { 168 if (ranges_overlap(addr, len, PCI_BASE_ADDRESS_0, 16)) { 169 /* BARs 0-3 always read back zero in legacy mode */ 170 for (int i = addr; i < addr + len; i++) { 171 if (i >= PCI_BASE_ADDRESS_0 && i < PCI_BASE_ADDRESS_0 + 16) { 172 val &= ~(0xffULL << ((i - addr) << 3)); 173 } 174 } 175 } 176 if (addr == PCI_BASE_ADDRESS_4 && val == PCI_BASE_ADDRESS_SPACE_IO) { 177 /* BAR4 default value if unset */ 178 val = 0xcc00 | PCI_BASE_ADDRESS_SPACE_IO; 179 } 180 } 181 182 return val; 183 } 184 185 static void via_ide_cfg_write(PCIDevice *pd, uint32_t addr, 186 uint32_t val, int len) 187 { 188 PCIIDEState *d = PCI_IDE(pd); 189 190 pci_default_write_config(pd, addr, val, len); 191 192 if (range_covers_byte(addr, len, PCI_CLASS_PROG)) { 193 pci_ide_update_mode(d); 194 } 195 } 196 197 static void via_ide_realize(PCIDevice *dev, Error **errp) 198 { 199 PCIIDEState *d = PCI_IDE(dev); 200 DeviceState *ds = DEVICE(dev); 201 uint8_t *pci_conf = dev->config; 202 int i; 203 204 pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0); 205 dev->wmask[PCI_INTERRUPT_LINE] = 0; 206 dev->wmask[PCI_CLASS_PROG] = 5; 207 208 memory_region_init_io(&d->data_bar[0], OBJECT(d), &pci_ide_data_le_ops, 209 &d->bus[0], "via-ide0-data", 8); 210 pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->data_bar[0]); 211 212 memory_region_init_io(&d->cmd_bar[0], OBJECT(d), &pci_ide_cmd_le_ops, 213 &d->bus[0], "via-ide0-cmd", 4); 214 pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd_bar[0]); 215 216 memory_region_init_io(&d->data_bar[1], OBJECT(d), &pci_ide_data_le_ops, 217 &d->bus[1], "via-ide1-data", 8); 218 pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_IO, &d->data_bar[1]); 219 220 memory_region_init_io(&d->cmd_bar[1], OBJECT(d), &pci_ide_cmd_le_ops, 221 &d->bus[1], "via-ide1-cmd", 4); 222 pci_register_bar(dev, 3, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd_bar[1]); 223 224 bmdma_setup_bar(d); 225 pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar); 226 227 qdev_init_gpio_in(ds, via_ide_set_irq, ARRAY_SIZE(d->bus)); 228 for (i = 0; i < ARRAY_SIZE(d->bus); i++) { 229 ide_bus_init(&d->bus[i], sizeof(d->bus[i]), ds, i, MAX_IDE_DEVS); 230 ide_bus_init_output_irq(&d->bus[i], qdev_get_gpio_in(ds, i)); 231 232 bmdma_init(&d->bus[i], &d->bmdma[i], d); 233 ide_bus_register_restart_cb(&d->bus[i]); 234 } 235 } 236 237 static void via_ide_exitfn(PCIDevice *dev) 238 { 239 PCIIDEState *d = PCI_IDE(dev); 240 unsigned i; 241 242 for (i = 0; i < ARRAY_SIZE(d->bmdma); ++i) { 243 memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io); 244 memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport); 245 } 246 } 247 248 static void via_ide_class_init(ObjectClass *klass, void *data) 249 { 250 DeviceClass *dc = DEVICE_CLASS(klass); 251 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 252 253 device_class_set_legacy_reset(dc, via_ide_reset); 254 dc->vmsd = &vmstate_ide_pci; 255 /* Reason: only works as function of VIA southbridge */ 256 dc->user_creatable = false; 257 258 k->config_read = via_ide_cfg_read; 259 k->config_write = via_ide_cfg_write; 260 k->realize = via_ide_realize; 261 k->exit = via_ide_exitfn; 262 k->vendor_id = PCI_VENDOR_ID_VIA; 263 k->device_id = PCI_DEVICE_ID_VIA_IDE; 264 k->revision = 0x06; 265 k->class_id = PCI_CLASS_STORAGE_IDE; 266 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 267 } 268 269 static const TypeInfo via_ide_info = { 270 .name = TYPE_VIA_IDE, 271 .parent = TYPE_PCI_IDE, 272 .class_init = via_ide_class_init, 273 }; 274 275 static void via_ide_register_types(void) 276 { 277 type_register_static(&via_ide_info); 278 } 279 280 type_init(via_ide_register_types) 281