hw/ide/via.c

   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 #include <hw/hw.h>
  27 #include <hw/pc.h>
  28 #include <hw/pci.h>
  29 #include <hw/isa.h>
  30 #include "block.h"
  31 #include "sysemu.h"
  32 #include "dma.h"
  33
  34 #include <hw/ide/pci.h>
  35
  36 static uint64_t bmdma_read(void *opaque, target_phys_addr_t 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 #ifdef DEBUG_IDE
  58     printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val);
  59 #endif
  60     return val;
  61 }
  62
  63 static void bmdma_write(void *opaque, target_phys_addr_t addr,
  64                         uint64_t val, unsigned size)
  65 {
  66     BMDMAState *bm = opaque;
  67
  68     if (size != 1) {
  69         return;
  70     }
  71
  72 #ifdef DEBUG_IDE
  73     printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val);
  74 #endif
  75     switch (addr & 3) {
  76     case 0:
  77         return bmdma_cmd_writeb(bm, val);
  78     case 2:
  79         bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
  80         break;
  81     default:;
  82     }
  83 }
  84
  85 static MemoryRegionOps via_bmdma_ops = {
  86     .read = bmdma_read,
  87     .write = bmdma_write,
  88 };
  89
  90 static void bmdma_setup_bar(PCIIDEState *d)
  91 {
  92     int i;
  93
  94     memory_region_init(&d->bmdma_bar, "via-bmdma-container", 16);
  95     for(i = 0;i < 2; i++) {
  96         BMDMAState *bm = &d->bmdma[i];
  97
  98         memory_region_init_io(&bm->extra_io, &via_bmdma_ops, bm,
  99                               "via-bmdma", 4);
 100         memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io);
 101         memory_region_init_io(&bm->addr_ioport, &bmdma_addr_ioport_ops, bm,
 102                               "bmdma", 4);
 103         memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport);
 104     }
 105 }
 106
 107 static void via_reset(void *opaque)
 108 {
 109     PCIIDEState *d = opaque;
 110     uint8_t *pci_conf = d->dev.config;
 111     int i;
 112
 113     for (i = 0; i < 2; i++) {
 114         ide_bus_reset(&d->bus[i]);
 115     }
 116
 117     pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_WAIT);
 118     pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
 119                  PCI_STATUS_DEVSEL_MEDIUM);
 120
 121     pci_set_long(pci_conf + PCI_BASE_ADDRESS_0, 0x000001f0);
 122     pci_set_long(pci_conf + PCI_BASE_ADDRESS_1, 0x000003f4);
 123     pci_set_long(pci_conf + PCI_BASE_ADDRESS_2, 0x00000170);
 124     pci_set_long(pci_conf + PCI_BASE_ADDRESS_3, 0x00000374);
 125     pci_set_long(pci_conf + PCI_BASE_ADDRESS_4, 0x0000cc01); /* BMIBA: 20-23h */
 126     pci_set_long(pci_conf + PCI_INTERRUPT_LINE, 0x0000010e);
 127
 128     /* IDE chip enable, IDE configuration 1/2, IDE FIFO Configuration*/
 129     pci_set_long(pci_conf + 0x40, 0x0a090600);
 130     /* IDE misc configuration 1/2/3 */
 131     pci_set_long(pci_conf + 0x44, 0x00c00068);
 132     /* IDE Timing control */
 133     pci_set_long(pci_conf + 0x48, 0xa8a8a8a8);
 134     /* IDE Address Setup Time */
 135     pci_set_long(pci_conf + 0x4c, 0x000000ff);
 136     /* UltraDMA Extended Timing Control*/
 137     pci_set_long(pci_conf + 0x50, 0x07070707);
 138     /* UltraDMA FIFO Control */
 139     pci_set_long(pci_conf + 0x54, 0x00000004);
 140     /* IDE primary sector size */
 141     pci_set_long(pci_conf + 0x60, 0x00000200);
 142     /* IDE secondary sector size */
 143     pci_set_long(pci_conf + 0x68, 0x00000200);
 144     /* PCI PM Block */
 145     pci_set_long(pci_conf + 0xc0, 0x00020001);
 146 }
 147
 148 static void vt82c686b_init_ports(PCIIDEState *d) {
 149     int i;
 150     struct {
 151         int iobase;
 152         int iobase2;
 153         int isairq;
 154     } port_info[] = {
 155         {0x1f0, 0x3f6, 14},
 156         {0x170, 0x376, 15},
 157     };
 158
 159     for (i = 0; i < 2; i++) {
 160         ide_bus_new(&d->bus[i], &d->dev.qdev, i);
 161         ide_init_ioport(&d->bus[i], port_info[i].iobase, port_info[i].iobase2);
 162         ide_init2(&d->bus[i], isa_get_irq(port_info[i].isairq));
 163
 164         bmdma_init(&d->bus[i], &d->bmdma[i], d);
 165         d->bmdma[i].bus = &d->bus[i];
 166         qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb,
 167                                          &d->bmdma[i].dma);
 168     }
 169 }
 170
 171 /* via ide func */
 172 static int vt82c686b_ide_initfn(PCIDevice *dev)
 173 {
 174     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);;
 175     uint8_t *pci_conf = d->dev.config;
 176
 177     pci_config_set_prog_interface(pci_conf, 0x8a); /* legacy ATA mode */
 178     pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
 179
 180     qemu_register_reset(via_reset, d);
 181     bmdma_setup_bar(d);
 182     pci_register_bar(&d->dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
 183
 184     vmstate_register(&dev->qdev, 0, &vmstate_ide_pci, d);
 185
 186     vt82c686b_init_ports(d);
 187
 188     return 0;
 189 }
 190
 191 static int vt82c686b_ide_exitfn(PCIDevice *dev)
 192 {
 193     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
 194     unsigned i;
 195
 196     for (i = 0; i < 2; ++i) {
 197         memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io);
 198         memory_region_destroy(&d->bmdma[i].extra_io);
 199         memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport);
 200         memory_region_destroy(&d->bmdma[i].addr_ioport);
 201     }
 202     memory_region_destroy(&d->bmdma_bar);
 203
 204     return 0;
 205 }
 206
 207 void vt82c686b_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
 208 {
 209     PCIDevice *dev;
 210
 211     dev = pci_create_simple(bus, devfn, "via-ide");
 212     pci_ide_create_devs(dev, hd_table);
 213 }
 214
 215 static PCIDeviceInfo via_ide_info = {
 216     .qdev.name    = "via-ide",
 217     .qdev.size    = sizeof(PCIIDEState),
 218     .qdev.no_user = 1,
 219     .init         = vt82c686b_ide_initfn,
 220     .exit         = vt82c686b_ide_exitfn,
 221     .vendor_id    = PCI_VENDOR_ID_VIA,
 222     .device_id    = PCI_DEVICE_ID_VIA_IDE,
 223     .revision     = 0x06,
 224     .class_id     = PCI_CLASS_STORAGE_IDE,
 225 };
 226
 227 static void via_ide_register(void)
 228 {
 229     pci_qdev_register(&via_ide_info);
 230 }
 231 device_init(via_ide_register);