hw/ide/piix.c

   1 /*
   2  * QEMU IDE Emulation: PCI PIIX3/4 support.
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  * Copyright (c) 2006 Openedhand Ltd.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25 #include <hw/hw.h>
  26 #include <hw/pc.h>
  27 #include <hw/pci.h>
  28 #include <hw/isa.h>
  29 #include "block.h"
  30 #include "block_int.h"
  31 #include "sysemu.h"
  32 #include "dma.h"
  33
  34 #include <hw/ide/pci.h>
  35
  36 static uint32_t bmdma_readb(void *opaque, uint32_t addr)
  37 {
  38     BMDMAState *bm = opaque;
  39     uint32_t val;
  40
  41     switch(addr & 3) {
  42     case 0:
  43         val = bm->cmd;
  44         break;
  45     case 2:
  46         val = bm->status;
  47         break;
  48     default:
  49         val = 0xff;
  50         break;
  51     }
  52 #ifdef DEBUG_IDE
  53     printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val);
  54 #endif
  55     return val;
  56 }
  57
  58 static void bmdma_writeb(void *opaque, uint32_t addr, uint32_t val)
  59 {
  60     BMDMAState *bm = opaque;
  61 #ifdef DEBUG_IDE
  62     printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val);
  63 #endif
  64     switch(addr & 3) {
  65     case 2:
  66         bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
  67         break;
  68     }
  69 }
  70
  71 static void bmdma_map(PCIDevice *pci_dev, int region_num,
  72                     pcibus_t addr, pcibus_t size, int type)
  73 {
  74     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
  75     int i;
  76
  77     for(i = 0;i < 2; i++) {
  78         BMDMAState *bm = &d->bmdma[i];
  79
  80         register_ioport_write(addr, 1, 1, bmdma_cmd_writeb, bm);
  81
  82         register_ioport_write(addr + 1, 3, 1, bmdma_writeb, bm);
  83         register_ioport_read(addr, 4, 1, bmdma_readb, bm);
  84
  85         iorange_init(&bm->addr_ioport, &bmdma_addr_ioport_ops, addr + 4, 4);
  86         ioport_register(&bm->addr_ioport);
  87         addr += 8;
  88     }
  89 }
  90
  91 static void piix3_reset(void *opaque)
  92 {
  93     PCIIDEState *d = opaque;
  94     uint8_t *pci_conf = d->dev.config;
  95     int i;
  96
  97     for (i = 0; i < 2; i++) {
  98         ide_bus_reset(&d->bus[i]);
  99     }
 100
 101     /* TODO: this is the default. do not override. */
 102     pci_conf[PCI_COMMAND] = 0x00;
 103     /* TODO: this is the default. do not override. */
 104     pci_conf[PCI_COMMAND + 1] = 0x00;
 105     /* TODO: use pci_set_word */
 106     pci_conf[PCI_STATUS] = PCI_STATUS_FAST_BACK;
 107     pci_conf[PCI_STATUS + 1] = PCI_STATUS_DEVSEL_MEDIUM >> 8;
 108     pci_conf[0x20] = 0x01; /* BMIBA: 20-23h */
 109 }
 110
 111 static void pci_piix_init_ports(PCIIDEState *d) {
 112     int i;
 113     struct {
 114         int iobase;
 115         int iobase2;
 116         int isairq;
 117     } port_info[] = {
 118         {0x1f0, 0x3f6, 14},
 119         {0x170, 0x376, 15},
 120     };
 121
 122     for (i = 0; i < 2; i++) {
 123         ide_bus_new(&d->bus[i], &d->dev.qdev, i);
 124         ide_init_ioport(&d->bus[i], port_info[i].iobase, port_info[i].iobase2);
 125         ide_init2(&d->bus[i], isa_get_irq(port_info[i].isairq));
 126
 127         bmdma_init(&d->bus[i], &d->bmdma[i]);
 128         d->bmdma[i].bus = &d->bus[i];
 129         qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb,
 130                                          &d->bmdma[i].dma);
 131     }
 132 }
 133
 134 static int pci_piix_ide_initfn(PCIIDEState *d)
 135 {
 136     uint8_t *pci_conf = d->dev.config;
 137
 138     pci_conf[PCI_CLASS_PROG] = 0x80; // legacy ATA mode
 139     pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_IDE);
 140
 141     qemu_register_reset(piix3_reset, d);
 142
 143     pci_register_bar(&d->dev, 4, 0x10, PCI_BASE_ADDRESS_SPACE_IO, bmdma_map);
 144
 145     vmstate_register(&d->dev.qdev, 0, &vmstate_ide_pci, d);
 146
 147     pci_piix_init_ports(d);
 148
 149     return 0;
 150 }
 151
 152 static int pci_piix3_ide_initfn(PCIDevice *dev)
 153 {
 154     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
 155
 156     pci_config_set_vendor_id(d->dev.config, PCI_VENDOR_ID_INTEL);
 157     pci_config_set_device_id(d->dev.config, PCI_DEVICE_ID_INTEL_82371SB_1);
 158     return pci_piix_ide_initfn(d);
 159 }
 160
 161 static int pci_piix4_ide_initfn(PCIDevice *dev)
 162 {
 163     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
 164
 165     pci_config_set_vendor_id(d->dev.config, PCI_VENDOR_ID_INTEL);
 166     pci_config_set_device_id(d->dev.config, PCI_DEVICE_ID_INTEL_82371AB);
 167     return pci_piix_ide_initfn(d);
 168 }
 169
 170 /* hd_table must contain 4 block drivers */
 171 /* NOTE: for the PIIX3, the IRQs and IOports are hardcoded */
 172 PCIDevice *pci_piix3_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
 173 {
 174     PCIDevice *dev;
 175
 176     dev = pci_create_simple(bus, devfn, "piix3-ide");
 177     pci_ide_create_devs(dev, hd_table);
 178     return dev;
 179 }
 180
 181 /* hd_table must contain 4 block drivers */
 182 /* NOTE: for the PIIX4, the IRQs and IOports are hardcoded */
 183 PCIDevice *pci_piix4_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
 184 {
 185     PCIDevice *dev;
 186
 187     dev = pci_create_simple(bus, devfn, "piix4-ide");
 188     pci_ide_create_devs(dev, hd_table);
 189     return dev;
 190 }
 191
 192 static PCIDeviceInfo piix_ide_info[] = {
 193     {
 194         .qdev.name    = "piix3-ide",
 195         .qdev.size    = sizeof(PCIIDEState),
 196         .qdev.no_user = 1,
 197         .no_hotplug   = 1,
 198         .init         = pci_piix3_ide_initfn,
 199     },{
 200         .qdev.name    = "piix4-ide",
 201         .qdev.size    = sizeof(PCIIDEState),
 202         .qdev.no_user = 1,
 203         .no_hotplug   = 1,
 204         .init         = pci_piix4_ide_initfn,
 205     },{
 206         /* end of list */
 207     }
 208 };
 209
 210 static void piix_ide_register(void)
 211 {
 212     pci_qdev_register_many(piix_ide_info);
 213 }
 214 device_init(piix_ide_register);