via.c (7745B)
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 "sysemu/dma.h" 32 #include "hw/isa/vt82c686.h" 33 #include "hw/ide/pci.h" 34 #include "trace.h" 35 36 static uint64_t bmdma_read(void *opaque, hwaddr addr, 37 unsigned size) 38 { 39 BMDMAState *bm = opaque; 40 uint32_t val; 41 42 if (size != 1) { 43 return ((uint64_t)1 << (size * 8)) - 1; 44 } 45 46 switch (addr & 3) { 47 case 0: 48 val = bm->cmd; 49 break; 50 case 2: 51 val = bm->status; 52 break; 53 default: 54 val = 0xff; 55 break; 56 } 57 58 trace_bmdma_read_via(addr, val); 59 return val; 60 } 61 62 static void bmdma_write(void *opaque, hwaddr addr, 63 uint64_t val, unsigned size) 64 { 65 BMDMAState *bm = opaque; 66 67 if (size != 1) { 68 return; 69 } 70 71 trace_bmdma_write_via(addr, val); 72 switch (addr & 3) { 73 case 0: 74 bmdma_cmd_writeb(bm, val); 75 break; 76 case 2: 77 bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06); 78 break; 79 default:; 80 } 81 } 82 83 static const MemoryRegionOps via_bmdma_ops = { 84 .read = bmdma_read, 85 .write = bmdma_write, 86 }; 87 88 static void bmdma_setup_bar(PCIIDEState *d) 89 { 90 int i; 91 92 memory_region_init(&d->bmdma_bar, OBJECT(d), "via-bmdma-container", 16); 93 for(i = 0;i < 2; i++) { 94 BMDMAState *bm = &d->bmdma[i]; 95 96 memory_region_init_io(&bm->extra_io, OBJECT(d), &via_bmdma_ops, bm, 97 "via-bmdma", 4); 98 memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io); 99 memory_region_init_io(&bm->addr_ioport, OBJECT(d), 100 &bmdma_addr_ioport_ops, bm, "bmdma", 4); 101 memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport); 102 } 103 } 104 105 static void via_ide_set_irq(void *opaque, int n, int level) 106 { 107 PCIDevice *d = PCI_DEVICE(opaque); 108 109 if (level) { 110 d->config[0x70 + n * 8] |= 0x80; 111 } else { 112 d->config[0x70 + n * 8] &= ~0x80; 113 } 114 115 via_isa_set_irq(pci_get_function_0(d), 14 + n, level); 116 } 117 118 static void via_ide_reset(DeviceState *dev) 119 { 120 PCIIDEState *d = PCI_IDE(dev); 121 PCIDevice *pd = PCI_DEVICE(dev); 122 uint8_t *pci_conf = pd->config; 123 int i; 124 125 for (i = 0; i < 2; i++) { 126 ide_bus_reset(&d->bus[i]); 127 } 128 129 pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_WAIT); 130 pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK | 131 PCI_STATUS_DEVSEL_MEDIUM); 132 133 pci_set_long(pci_conf + PCI_BASE_ADDRESS_0, 0x000001f0); 134 pci_set_long(pci_conf + PCI_BASE_ADDRESS_1, 0x000003f4); 135 pci_set_long(pci_conf + PCI_BASE_ADDRESS_2, 0x00000170); 136 pci_set_long(pci_conf + PCI_BASE_ADDRESS_3, 0x00000374); 137 pci_set_long(pci_conf + PCI_BASE_ADDRESS_4, 0x0000cc01); /* BMIBA: 20-23h */ 138 pci_set_long(pci_conf + PCI_INTERRUPT_LINE, 0x0000010e); 139 140 /* IDE chip enable, IDE configuration 1/2, IDE FIFO Configuration*/ 141 pci_set_long(pci_conf + 0x40, 0x0a090600); 142 /* IDE misc configuration 1/2/3 */ 143 pci_set_long(pci_conf + 0x44, 0x00c00068); 144 /* IDE Timing control */ 145 pci_set_long(pci_conf + 0x48, 0xa8a8a8a8); 146 /* IDE Address Setup Time */ 147 pci_set_long(pci_conf + 0x4c, 0x000000ff); 148 /* UltraDMA Extended Timing Control*/ 149 pci_set_long(pci_conf + 0x50, 0x07070707); 150 /* UltraDMA FIFO Control */ 151 pci_set_long(pci_conf + 0x54, 0x00000004); 152 /* IDE primary sector size */ 153 pci_set_long(pci_conf + 0x60, 0x00000200); 154 /* IDE secondary sector size */ 155 pci_set_long(pci_conf + 0x68, 0x00000200); 156 /* PCI PM Block */ 157 pci_set_long(pci_conf + 0xc0, 0x00020001); 158 } 159 160 static void via_ide_realize(PCIDevice *dev, Error **errp) 161 { 162 PCIIDEState *d = PCI_IDE(dev); 163 DeviceState *ds = DEVICE(dev); 164 uint8_t *pci_conf = dev->config; 165 int i; 166 167 pci_config_set_prog_interface(pci_conf, 0x8a); /* legacy mode */ 168 pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0); 169 dev->wmask[PCI_INTERRUPT_LINE] = 0; 170 dev->wmask[PCI_CLASS_PROG] = 5; 171 172 memory_region_init_io(&d->data_bar[0], OBJECT(d), &pci_ide_data_le_ops, 173 &d->bus[0], "via-ide0-data", 8); 174 pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &d->data_bar[0]); 175 176 memory_region_init_io(&d->cmd_bar[0], OBJECT(d), &pci_ide_cmd_le_ops, 177 &d->bus[0], "via-ide0-cmd", 4); 178 pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd_bar[0]); 179 180 memory_region_init_io(&d->data_bar[1], OBJECT(d), &pci_ide_data_le_ops, 181 &d->bus[1], "via-ide1-data", 8); 182 pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_IO, &d->data_bar[1]); 183 184 memory_region_init_io(&d->cmd_bar[1], OBJECT(d), &pci_ide_cmd_le_ops, 185 &d->bus[1], "via-ide1-cmd", 4); 186 pci_register_bar(dev, 3, PCI_BASE_ADDRESS_SPACE_IO, &d->cmd_bar[1]); 187 188 bmdma_setup_bar(d); 189 pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar); 190 191 qdev_init_gpio_in(ds, via_ide_set_irq, 2); 192 for (i = 0; i < 2; i++) { 193 ide_bus_init(&d->bus[i], sizeof(d->bus[i]), ds, i, 2); 194 ide_init2(&d->bus[i], qdev_get_gpio_in(ds, i)); 195 196 bmdma_init(&d->bus[i], &d->bmdma[i], d); 197 d->bmdma[i].bus = &d->bus[i]; 198 ide_register_restart_cb(&d->bus[i]); 199 } 200 } 201 202 static void via_ide_exitfn(PCIDevice *dev) 203 { 204 PCIIDEState *d = PCI_IDE(dev); 205 unsigned i; 206 207 for (i = 0; i < 2; ++i) { 208 memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io); 209 memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport); 210 } 211 } 212 213 static void via_ide_class_init(ObjectClass *klass, void *data) 214 { 215 DeviceClass *dc = DEVICE_CLASS(klass); 216 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 217 218 dc->reset = via_ide_reset; 219 dc->vmsd = &vmstate_ide_pci; 220 /* Reason: only works as function of VIA southbridge */ 221 dc->user_creatable = false; 222 223 k->realize = via_ide_realize; 224 k->exit = via_ide_exitfn; 225 k->vendor_id = PCI_VENDOR_ID_VIA; 226 k->device_id = PCI_DEVICE_ID_VIA_IDE; 227 k->revision = 0x06; 228 k->class_id = PCI_CLASS_STORAGE_IDE; 229 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 230 } 231 232 static const TypeInfo via_ide_info = { 233 .name = TYPE_VIA_IDE, 234 .parent = TYPE_PCI_IDE, 235 .class_init = via_ide_class_init, 236 }; 237 238 static void via_ide_register_types(void) 239 { 240 type_register_static(&via_ide_info); 241 } 242 243 type_init(via_ide_register_types)