hw/usb/hcd-ehci-pci.c

   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 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 General Public License
  15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "hw/usb/hcd-ehci.h"
  19 #include "qemu/range.h"
  20
  21 typedef struct EHCIPCIInfo {
  22     const char *name;
  23     uint16_t vendor_id;
  24     uint16_t device_id;
  25     uint8_t  revision;
  26     bool companion;
  27 } EHCIPCIInfo;
  28
  29 static void usb_ehci_pci_realize(PCIDevice *dev, Error **errp)
  30 {
  31     EHCIPCIState *i = PCI_EHCI(dev);
  32     EHCIState *s = &i->ehci;
  33     uint8_t *pci_conf = dev->config;
  34
  35     pci_set_byte(&pci_conf[PCI_CLASS_PROG], 0x20);
  36
  37     /* capabilities pointer */
  38     pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x00);
  39     /* pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x50); */
  40
  41     pci_set_byte(&pci_conf[PCI_INTERRUPT_PIN], 4); /* interrupt pin D */
  42     pci_set_byte(&pci_conf[PCI_MIN_GNT], 0);
  43     pci_set_byte(&pci_conf[PCI_MAX_LAT], 0);
  44
  45     /* pci_conf[0x50] = 0x01; *//* power management caps */
  46
  47     pci_set_byte(&pci_conf[USB_SBRN], USB_RELEASE_2); /* release # (2.1.4) */
  48     pci_set_byte(&pci_conf[0x61], 0x20);  /* frame length adjustment (2.1.5) */
  49     pci_set_word(&pci_conf[0x62], 0x00);  /* port wake up capability (2.1.6) */
  50
  51     pci_conf[0x64] = 0x00;
  52     pci_conf[0x65] = 0x00;
  53     pci_conf[0x66] = 0x00;
  54     pci_conf[0x67] = 0x00;
  55     pci_conf[0x68] = 0x01;
  56     pci_conf[0x69] = 0x00;
  57     pci_conf[0x6a] = 0x00;
  58     pci_conf[0x6b] = 0x00;  /* USBLEGSUP */
  59     pci_conf[0x6c] = 0x00;
  60     pci_conf[0x6d] = 0x00;
  61     pci_conf[0x6e] = 0x00;
  62     pci_conf[0x6f] = 0xc0;  /* USBLEFCTLSTS */
  63
  64     s->irq = pci_allocate_irq(dev);
  65     s->as = pci_get_address_space(dev);
  66
  67     usb_ehci_realize(s, DEVICE(dev), NULL);
  68     pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mem);
  69 }
  70
  71 static void usb_ehci_pci_init(Object *obj)
  72 {
  73     DeviceClass *dc = OBJECT_GET_CLASS(DeviceClass, obj, TYPE_DEVICE);
  74     EHCIPCIState *i = PCI_EHCI(obj);
  75     EHCIState *s = &i->ehci;
  76
  77     s->caps[0x09] = 0x68;        /* EECP */
  78
  79     s->capsbase = 0x00;
  80     s->opregbase = 0x20;
  81     s->portscbase = 0x44;
  82     s->portnr = NB_PORTS;
  83
  84     if (!dc->hotpluggable) {
  85         s->companion_enable = true;
  86     }
  87
  88     usb_ehci_init(s, DEVICE(obj));
  89 }
  90
  91 static void usb_ehci_pci_exit(PCIDevice *dev)
  92 {
  93     EHCIPCIState *i = PCI_EHCI(dev);
  94     EHCIState *s = &i->ehci;
  95
  96     usb_ehci_unrealize(s, DEVICE(dev), NULL);
  97
  98     if (s->irq) {
  99         g_free(s->irq);
 100         s->irq = NULL;
 101     }
 102 }
 103
 104 static void usb_ehci_pci_write_config(PCIDevice *dev, uint32_t addr,
 105                                       uint32_t val, int l)
 106 {
 107     EHCIPCIState *i = PCI_EHCI(dev);
 108     bool busmaster;
 109
 110     pci_default_write_config(dev, addr, val, l);
 111
 112     if (!range_covers_byte(addr, l, PCI_COMMAND)) {
 113         return;
 114     }
 115     busmaster = pci_get_word(dev->config + PCI_COMMAND) & PCI_COMMAND_MASTER;
 116     i->ehci.as = busmaster ? pci_get_address_space(dev) : &address_space_memory;
 117 }
 118
 119 static Property ehci_pci_properties[] = {
 120     DEFINE_PROP_UINT32("maxframes", EHCIPCIState, ehci.maxframes, 128),
 121     DEFINE_PROP_END_OF_LIST(),
 122 };
 123
 124 static const VMStateDescription vmstate_ehci_pci = {
 125     .name        = "ehci",
 126     .version_id  = 2,
 127     .minimum_version_id  = 1,
 128     .fields = (VMStateField[]) {
 129         VMSTATE_PCI_DEVICE(pcidev, EHCIPCIState),
 130         VMSTATE_STRUCT(ehci, EHCIPCIState, 2, vmstate_ehci, EHCIState),
 131         VMSTATE_END_OF_LIST()
 132     }
 133 };
 134
 135 static void ehci_class_init(ObjectClass *klass, void *data)
 136 {
 137     DeviceClass *dc = DEVICE_CLASS(klass);
 138     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 139
 140     k->realize = usb_ehci_pci_realize;
 141     k->exit = usb_ehci_pci_exit;
 142     k->class_id = PCI_CLASS_SERIAL_USB;
 143     k->config_write = usb_ehci_pci_write_config;
 144     dc->vmsd = &vmstate_ehci_pci;
 145     dc->props = ehci_pci_properties;
 146 }
 147
 148 static const TypeInfo ehci_pci_type_info = {
 149     .name = TYPE_PCI_EHCI,
 150     .parent = TYPE_PCI_DEVICE,
 151     .instance_size = sizeof(EHCIPCIState),
 152     .instance_init = usb_ehci_pci_init,
 153     .abstract = true,
 154     .class_init = ehci_class_init,
 155 };
 156
 157 static void ehci_data_class_init(ObjectClass *klass, void *data)
 158 {
 159     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 160     DeviceClass *dc = DEVICE_CLASS(klass);
 161     EHCIPCIInfo *i = data;
 162
 163     k->vendor_id = i->vendor_id;
 164     k->device_id = i->device_id;
 165     k->revision = i->revision;
 166     set_bit(DEVICE_CATEGORY_USB, dc->categories);
 167     if (i->companion) {
 168         dc->hotpluggable = false;
 169     }
 170 }
 171
 172 static struct EHCIPCIInfo ehci_pci_info[] = {
 173     {
 174         .name      = "usb-ehci",
 175         .vendor_id = PCI_VENDOR_ID_INTEL,
 176         .device_id = PCI_DEVICE_ID_INTEL_82801D, /* ich4 */
 177         .revision  = 0x10,
 178     },{
 179         .name      = "ich9-usb-ehci1", /* 00:1d.7 */
 180         .vendor_id = PCI_VENDOR_ID_INTEL,
 181         .device_id = PCI_DEVICE_ID_INTEL_82801I_EHCI1,
 182         .revision  = 0x03,
 183         .companion = true,
 184     },{
 185         .name      = "ich9-usb-ehci2", /* 00:1a.7 */
 186         .vendor_id = PCI_VENDOR_ID_INTEL,
 187         .device_id = PCI_DEVICE_ID_INTEL_82801I_EHCI2,
 188         .revision  = 0x03,
 189         .companion = true,
 190     }
 191 };
 192
 193 static void ehci_pci_register_types(void)
 194 {
 195     TypeInfo ehci_type_info = {
 196         .parent        = TYPE_PCI_EHCI,
 197         .class_init    = ehci_data_class_init,
 198     };
 199     int i;
 200
 201     type_register_static(&ehci_pci_type_info);
 202
 203     for (i = 0; i < ARRAY_SIZE(ehci_pci_info); i++) {
 204         ehci_type_info.name = ehci_pci_info[i].name;
 205         ehci_type_info.class_data = ehci_pci_info + i;
 206         type_register(&ehci_type_info);
 207     }
 208 }
 209
 210 type_init(ehci_pci_register_types)
 211
 212 struct ehci_companions {
 213     const char *name;
 214     int func;
 215     int port;
 216 };
 217
 218 static const struct ehci_companions ich9_1d[] = {
 219     { .name = "ich9-usb-uhci1", .func = 0, .port = 0 },
 220     { .name = "ich9-usb-uhci2", .func = 1, .port = 2 },
 221     { .name = "ich9-usb-uhci3", .func = 2, .port = 4 },
 222 };
 223
 224 static const struct ehci_companions ich9_1a[] = {
 225     { .name = "ich9-usb-uhci4", .func = 0, .port = 0 },
 226     { .name = "ich9-usb-uhci5", .func = 1, .port = 2 },
 227     { .name = "ich9-usb-uhci6", .func = 2, .port = 4 },
 228 };
 229
 230 int ehci_create_ich9_with_companions(PCIBus *bus, int slot)
 231 {
 232     const struct ehci_companions *comp;
 233     PCIDevice *ehci, *uhci;
 234     BusState *usbbus;
 235     const char *name;
 236     int i;
 237
 238     switch (slot) {
 239     case 0x1d:
 240         name = "ich9-usb-ehci1";
 241         comp = ich9_1d;
 242         break;
 243     case 0x1a:
 244         name = "ich9-usb-ehci2";
 245         comp = ich9_1a;
 246         break;
 247     default:
 248         return -1;
 249     }
 250
 251     ehci = pci_create_multifunction(bus, PCI_DEVFN(slot, 7), true, name);
 252     qdev_init_nofail(&ehci->qdev);
 253     usbbus = QLIST_FIRST(&ehci->qdev.child_bus);
 254
 255     for (i = 0; i < 3; i++) {
 256         uhci = pci_create_multifunction(bus, PCI_DEVFN(slot, comp[i].func),
 257                                         true, comp[i].name);
 258         qdev_prop_set_string(&uhci->qdev, "masterbus", usbbus->name);
 259         qdev_prop_set_uint32(&uhci->qdev, "firstport", comp[i].port);
 260         qdev_init_nofail(&uhci->qdev);
 261     }
 262     return 0;
 263 }