qemu/hw/usb/hcd-ehci-pci.c
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   1/*
   2 * QEMU USB EHCI Emulation
   3 *
   4 * This library is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU Lesser General Public
   6 * License as published by the Free Software Foundation; either
   7 * version 2.1 of the License, or (at your option) any later version.
   8 *
   9 * This library is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 * Lesser General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU Lesser General Public License
  15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18#include "qemu/osdep.h"
  19#include "hw/usb/hcd-ehci.h"
  20#include "qemu/module.h"
  21#include "qemu/range.h"
  22
  23typedef struct EHCIPCIInfo {
  24    const char *name;
  25    uint16_t vendor_id;
  26    uint16_t device_id;
  27    uint8_t  revision;
  28    bool companion;
  29} EHCIPCIInfo;
  30
  31static void usb_ehci_pci_realize(PCIDevice *dev, Error **errp)
  32{
  33    EHCIPCIState *i = PCI_EHCI(dev);
  34    EHCIState *s = &i->ehci;
  35    uint8_t *pci_conf = dev->config;
  36
  37    pci_set_byte(&pci_conf[PCI_CLASS_PROG], 0x20);
  38
  39    /* capabilities pointer */
  40    pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x00);
  41    /* pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x50); */
  42
  43    pci_set_byte(&pci_conf[PCI_INTERRUPT_PIN], 4); /* interrupt pin D */
  44    pci_set_byte(&pci_conf[PCI_MIN_GNT], 0);
  45    pci_set_byte(&pci_conf[PCI_MAX_LAT], 0);
  46
  47    /* pci_conf[0x50] = 0x01; *//* power management caps */
  48
  49    pci_set_byte(&pci_conf[USB_SBRN], USB_RELEASE_2); /* release # (2.1.4) */
  50    pci_set_byte(&pci_conf[0x61], 0x20);  /* frame length adjustment (2.1.5) */
  51    pci_set_word(&pci_conf[0x62], 0x00);  /* port wake up capability (2.1.6) */
  52
  53    pci_conf[0x64] = 0x00;
  54    pci_conf[0x65] = 0x00;
  55    pci_conf[0x66] = 0x00;
  56    pci_conf[0x67] = 0x00;
  57    pci_conf[0x68] = 0x01;
  58    pci_conf[0x69] = 0x00;
  59    pci_conf[0x6a] = 0x00;
  60    pci_conf[0x6b] = 0x00;  /* USBLEGSUP */
  61    pci_conf[0x6c] = 0x00;
  62    pci_conf[0x6d] = 0x00;
  63    pci_conf[0x6e] = 0x00;
  64    pci_conf[0x6f] = 0xc0;  /* USBLEFCTLSTS */
  65
  66    s->irq = pci_allocate_irq(dev);
  67    s->as = pci_get_address_space(dev);
  68
  69    usb_ehci_realize(s, DEVICE(dev), NULL);
  70    pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mem);
  71}
  72
  73static void usb_ehci_pci_init(Object *obj)
  74{
  75    DeviceClass *dc = OBJECT_GET_CLASS(DeviceClass, obj, TYPE_DEVICE);
  76    EHCIPCIState *i = PCI_EHCI(obj);
  77    EHCIState *s = &i->ehci;
  78
  79    s->caps[0x09] = 0x68;        /* EECP */
  80
  81    s->capsbase = 0x00;
  82    s->opregbase = 0x20;
  83    s->portscbase = 0x44;
  84    s->portnr = NB_PORTS;
  85
  86    if (!dc->hotpluggable) {
  87        s->companion_enable = true;
  88    }
  89
  90    usb_ehci_init(s, DEVICE(obj));
  91}
  92
  93static void usb_ehci_pci_finalize(Object *obj)
  94{
  95    EHCIPCIState *i = PCI_EHCI(obj);
  96    EHCIState *s = &i->ehci;
  97
  98    usb_ehci_finalize(s);
  99}
 100
 101static void usb_ehci_pci_exit(PCIDevice *dev)
 102{
 103    EHCIPCIState *i = PCI_EHCI(dev);
 104    EHCIState *s = &i->ehci;
 105
 106    usb_ehci_unrealize(s, DEVICE(dev), NULL);
 107
 108    g_free(s->irq);
 109    s->irq = NULL;
 110}
 111
 112static void usb_ehci_pci_reset(DeviceState *dev)
 113{
 114    PCIDevice *pci_dev = PCI_DEVICE(dev);
 115    EHCIPCIState *i = PCI_EHCI(pci_dev);
 116    EHCIState *s = &i->ehci;
 117
 118    ehci_reset(s);
 119}
 120
 121static void usb_ehci_pci_write_config(PCIDevice *dev, uint32_t addr,
 122                                      uint32_t val, int l)
 123{
 124    EHCIPCIState *i = PCI_EHCI(dev);
 125    bool busmaster;
 126
 127    pci_default_write_config(dev, addr, val, l);
 128
 129    if (!range_covers_byte(addr, l, PCI_COMMAND)) {
 130        return;
 131    }
 132    busmaster = pci_get_word(dev->config + PCI_COMMAND) & PCI_COMMAND_MASTER;
 133    i->ehci.as = busmaster ? pci_get_address_space(dev) : &address_space_memory;
 134}
 135
 136static Property ehci_pci_properties[] = {
 137    DEFINE_PROP_UINT32("maxframes", EHCIPCIState, ehci.maxframes, 128),
 138    DEFINE_PROP_END_OF_LIST(),
 139};
 140
 141static const VMStateDescription vmstate_ehci_pci = {
 142    .name        = "ehci",
 143    .version_id  = 2,
 144    .minimum_version_id  = 1,
 145    .fields = (VMStateField[]) {
 146        VMSTATE_PCI_DEVICE(pcidev, EHCIPCIState),
 147        VMSTATE_STRUCT(ehci, EHCIPCIState, 2, vmstate_ehci, EHCIState),
 148        VMSTATE_END_OF_LIST()
 149    }
 150};
 151
 152static void ehci_class_init(ObjectClass *klass, void *data)
 153{
 154    DeviceClass *dc = DEVICE_CLASS(klass);
 155    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 156
 157    k->realize = usb_ehci_pci_realize;
 158    k->exit = usb_ehci_pci_exit;
 159    k->class_id = PCI_CLASS_SERIAL_USB;
 160    k->config_write = usb_ehci_pci_write_config;
 161    dc->vmsd = &vmstate_ehci_pci;
 162    dc->props = ehci_pci_properties;
 163    dc->reset = usb_ehci_pci_reset;
 164}
 165
 166static const TypeInfo ehci_pci_type_info = {
 167    .name = TYPE_PCI_EHCI,
 168    .parent = TYPE_PCI_DEVICE,
 169    .instance_size = sizeof(EHCIPCIState),
 170    .instance_init = usb_ehci_pci_init,
 171    .instance_finalize = usb_ehci_pci_finalize,
 172    .abstract = true,
 173    .class_init = ehci_class_init,
 174    .interfaces = (InterfaceInfo[]) {
 175        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 176        { },
 177    },
 178};
 179
 180static void ehci_data_class_init(ObjectClass *klass, void *data)
 181{
 182    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 183    DeviceClass *dc = DEVICE_CLASS(klass);
 184    EHCIPCIInfo *i = data;
 185
 186    k->vendor_id = i->vendor_id;
 187    k->device_id = i->device_id;
 188    k->revision = i->revision;
 189    set_bit(DEVICE_CATEGORY_USB, dc->categories);
 190    if (i->companion) {
 191        dc->hotpluggable = false;
 192    }
 193}
 194
 195static struct EHCIPCIInfo ehci_pci_info[] = {
 196    {
 197        .name      = "usb-ehci",
 198        .vendor_id = PCI_VENDOR_ID_INTEL,
 199        .device_id = PCI_DEVICE_ID_INTEL_82801D, /* ich4 */
 200        .revision  = 0x10,
 201    },{
 202        .name      = "ich9-usb-ehci1", /* 00:1d.7 */
 203        .vendor_id = PCI_VENDOR_ID_INTEL,
 204        .device_id = PCI_DEVICE_ID_INTEL_82801I_EHCI1,
 205        .revision  = 0x03,
 206        .companion = true,
 207    },{
 208        .name      = "ich9-usb-ehci2", /* 00:1a.7 */
 209        .vendor_id = PCI_VENDOR_ID_INTEL,
 210        .device_id = PCI_DEVICE_ID_INTEL_82801I_EHCI2,
 211        .revision  = 0x03,
 212        .companion = true,
 213    }
 214};
 215
 216static void ehci_pci_register_types(void)
 217{
 218    TypeInfo ehci_type_info = {
 219        .parent        = TYPE_PCI_EHCI,
 220        .class_init    = ehci_data_class_init,
 221    };
 222    int i;
 223
 224    type_register_static(&ehci_pci_type_info);
 225
 226    for (i = 0; i < ARRAY_SIZE(ehci_pci_info); i++) {
 227        ehci_type_info.name = ehci_pci_info[i].name;
 228        ehci_type_info.class_data = ehci_pci_info + i;
 229        type_register(&ehci_type_info);
 230    }
 231}
 232
 233type_init(ehci_pci_register_types)
 234