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     g_free(s->irq);
  99     s->irq = NULL;
 100 }
 101
 102 static void usb_ehci_pci_reset(DeviceState *dev)
 103 {
 104     PCIDevice *pci_dev = PCI_DEVICE(dev);
 105     EHCIPCIState *i = PCI_EHCI(pci_dev);
 106     EHCIState *s = &i->ehci;
 107
 108     ehci_reset(s);
 109 }
 110
 111 static void usb_ehci_pci_write_config(PCIDevice *dev, uint32_t addr,
 112                                       uint32_t val, int l)
 113 {
 114     EHCIPCIState *i = PCI_EHCI(dev);
 115     bool busmaster;
 116
 117     pci_default_write_config(dev, addr, val, l);
 118
 119     if (!range_covers_byte(addr, l, PCI_COMMAND)) {
 120         return;
 121     }
 122     busmaster = pci_get_word(dev->config + PCI_COMMAND) & PCI_COMMAND_MASTER;
 123     i->ehci.as = busmaster ? pci_get_address_space(dev) : &address_space_memory;
 124 }
 125
 126 static Property ehci_pci_properties[] = {
 127     DEFINE_PROP_UINT32("maxframes", EHCIPCIState, ehci.maxframes, 128),
 128     DEFINE_PROP_END_OF_LIST(),
 129 };
 130
 131 static const VMStateDescription vmstate_ehci_pci = {
 132     .name        = "ehci",
 133     .version_id  = 2,
 134     .minimum_version_id  = 1,
 135     .fields = (VMStateField[]) {
 136         VMSTATE_PCI_DEVICE(pcidev, EHCIPCIState),
 137         VMSTATE_STRUCT(ehci, EHCIPCIState, 2, vmstate_ehci, EHCIState),
 138         VMSTATE_END_OF_LIST()
 139     }
 140 };
 141
 142 static void ehci_class_init(ObjectClass *klass, void *data)
 143 {
 144     DeviceClass *dc = DEVICE_CLASS(klass);
 145     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 146
 147     k->realize = usb_ehci_pci_realize;
 148     k->exit = usb_ehci_pci_exit;
 149     k->class_id = PCI_CLASS_SERIAL_USB;
 150     k->config_write = usb_ehci_pci_write_config;
 151     dc->vmsd = &vmstate_ehci_pci;
 152     dc->props = ehci_pci_properties;
 153     dc->reset = usb_ehci_pci_reset;
 154 }
 155
 156 static const TypeInfo ehci_pci_type_info = {
 157     .name = TYPE_PCI_EHCI,
 158     .parent = TYPE_PCI_DEVICE,
 159     .instance_size = sizeof(EHCIPCIState),
 160     .instance_init = usb_ehci_pci_init,
 161     .abstract = true,
 162     .class_init = ehci_class_init,
 163 };
 164
 165 static void ehci_data_class_init(ObjectClass *klass, void *data)
 166 {
 167     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 168     DeviceClass *dc = DEVICE_CLASS(klass);
 169     EHCIPCIInfo *i = data;
 170
 171     k->vendor_id = i->vendor_id;
 172     k->device_id = i->device_id;
 173     k->revision = i->revision;
 174     set_bit(DEVICE_CATEGORY_USB, dc->categories);
 175     if (i->companion) {
 176         dc->hotpluggable = false;
 177     }
 178 }
 179
 180 static struct EHCIPCIInfo ehci_pci_info[] = {
 181     {
 182         .name      = "usb-ehci",
 183         .vendor_id = PCI_VENDOR_ID_INTEL,
 184         .device_id = PCI_DEVICE_ID_INTEL_82801D, /* ich4 */
 185         .revision  = 0x10,
 186     },{
 187         .name      = "ich9-usb-ehci1", /* 00:1d.7 */
 188         .vendor_id = PCI_VENDOR_ID_INTEL,
 189         .device_id = PCI_DEVICE_ID_INTEL_82801I_EHCI1,
 190         .revision  = 0x03,
 191         .companion = true,
 192     },{
 193         .name      = "ich9-usb-ehci2", /* 00:1a.7 */
 194         .vendor_id = PCI_VENDOR_ID_INTEL,
 195         .device_id = PCI_DEVICE_ID_INTEL_82801I_EHCI2,
 196         .revision  = 0x03,
 197         .companion = true,
 198     }
 199 };
 200
 201 static void ehci_pci_register_types(void)
 202 {
 203     TypeInfo ehci_type_info = {
 204         .parent        = TYPE_PCI_EHCI,
 205         .class_init    = ehci_data_class_init,
 206     };
 207     int i;
 208
 209     type_register_static(&ehci_pci_type_info);
 210
 211     for (i = 0; i < ARRAY_SIZE(ehci_pci_info); i++) {
 212         ehci_type_info.name = ehci_pci_info[i].name;
 213         ehci_type_info.class_data = ehci_pci_info + i;
 214         type_register(&ehci_type_info);
 215     }
 216 }
 217
 218 type_init(ehci_pci_register_types)
 219
 220 struct ehci_companions {
 221     const char *name;
 222     int func;
 223     int port;
 224 };
 225
 226 static const struct ehci_companions ich9_1d[] = {
 227     { .name = "ich9-usb-uhci1", .func = 0, .port = 0 },
 228     { .name = "ich9-usb-uhci2", .func = 1, .port = 2 },
 229     { .name = "ich9-usb-uhci3", .func = 2, .port = 4 },
 230 };
 231
 232 static const struct ehci_companions ich9_1a[] = {
 233     { .name = "ich9-usb-uhci4", .func = 0, .port = 0 },
 234     { .name = "ich9-usb-uhci5", .func = 1, .port = 2 },
 235     { .name = "ich9-usb-uhci6", .func = 2, .port = 4 },
 236 };
 237
 238 int ehci_create_ich9_with_companions(PCIBus *bus, int slot)
 239 {
 240     const struct ehci_companions *comp;
 241     PCIDevice *ehci, *uhci;
 242     BusState *usbbus;
 243     const char *name;
 244     int i;
 245
 246     switch (slot) {
 247     case 0x1d:
 248         name = "ich9-usb-ehci1";
 249         comp = ich9_1d;
 250         break;
 251     case 0x1a:
 252         name = "ich9-usb-ehci2";
 253         comp = ich9_1a;
 254         break;
 255     default:
 256         return -1;
 257     }
 258
 259     ehci = pci_create_multifunction(bus, PCI_DEVFN(slot, 7), true, name);
 260     qdev_init_nofail(&ehci->qdev);
 261     usbbus = QLIST_FIRST(&ehci->qdev.child_bus);
 262
 263     for (i = 0; i < 3; i++) {
 264         uhci = pci_create_multifunction(bus, PCI_DEVFN(slot, comp[i].func),
 265                                         true, comp[i].name);
 266         qdev_prop_set_string(&uhci->qdev, "masterbus", usbbus->name);
 267         qdev_prop_set_uint32(&uhci->qdev, "firstport", comp[i].port);
 268         qdev_init_nofail(&uhci->qdev);
 269     }
 270     return 0;
 271 }