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 "qemu/osdep.h"
  19 #include "hw/usb/hcd-ehci.h"
  20 #include "qemu/range.h"
  21
  22 typedef struct EHCIPCIInfo {
  23     const char *name;
  24     uint16_t vendor_id;
  25     uint16_t device_id;
  26     uint8_t  revision;
  27     bool companion;
  28 } EHCIPCIInfo;
  29
  30 static void usb_ehci_pci_realize(PCIDevice *dev, Error **errp)
  31 {
  32     EHCIPCIState *i = PCI_EHCI(dev);
  33     EHCIState *s = &i->ehci;
  34     uint8_t *pci_conf = dev->config;
  35
  36     pci_set_byte(&pci_conf[PCI_CLASS_PROG], 0x20);
  37
  38     /* capabilities pointer */
  39     pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x00);
  40     /* pci_set_byte(&pci_conf[PCI_CAPABILITY_LIST], 0x50); */
  41
  42     pci_set_byte(&pci_conf[PCI_INTERRUPT_PIN], 4); /* interrupt pin D */
  43     pci_set_byte(&pci_conf[PCI_MIN_GNT], 0);
  44     pci_set_byte(&pci_conf[PCI_MAX_LAT], 0);
  45
  46     /* pci_conf[0x50] = 0x01; *//* power management caps */
  47
  48     pci_set_byte(&pci_conf[USB_SBRN], USB_RELEASE_2); /* release # (2.1.4) */
  49     pci_set_byte(&pci_conf[0x61], 0x20);  /* frame length adjustment (2.1.5) */
  50     pci_set_word(&pci_conf[0x62], 0x00);  /* port wake up capability (2.1.6) */
  51
  52     pci_conf[0x64] = 0x00;
  53     pci_conf[0x65] = 0x00;
  54     pci_conf[0x66] = 0x00;
  55     pci_conf[0x67] = 0x00;
  56     pci_conf[0x68] = 0x01;
  57     pci_conf[0x69] = 0x00;
  58     pci_conf[0x6a] = 0x00;
  59     pci_conf[0x6b] = 0x00;  /* USBLEGSUP */
  60     pci_conf[0x6c] = 0x00;
  61     pci_conf[0x6d] = 0x00;
  62     pci_conf[0x6e] = 0x00;
  63     pci_conf[0x6f] = 0xc0;  /* USBLEFCTLSTS */
  64
  65     s->irq = pci_allocate_irq(dev);
  66     s->as = pci_get_address_space(dev);
  67
  68     usb_ehci_realize(s, DEVICE(dev), NULL);
  69     pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mem);
  70 }
  71
  72 static void usb_ehci_pci_init(Object *obj)
  73 {
  74     DeviceClass *dc = OBJECT_GET_CLASS(DeviceClass, obj, TYPE_DEVICE);
  75     EHCIPCIState *i = PCI_EHCI(obj);
  76     EHCIState *s = &i->ehci;
  77
  78     s->caps[0x09] = 0x68;        /* EECP */
  79
  80     s->capsbase = 0x00;
  81     s->opregbase = 0x20;
  82     s->portscbase = 0x44;
  83     s->portnr = NB_PORTS;
  84
  85     if (!dc->hotpluggable) {
  86         s->companion_enable = true;
  87     }
  88
  89     usb_ehci_init(s, DEVICE(obj));
  90 }
  91
  92 static void usb_ehci_pci_exit(PCIDevice *dev)
  93 {
  94     EHCIPCIState *i = PCI_EHCI(dev);
  95     EHCIState *s = &i->ehci;
  96
  97     usb_ehci_unrealize(s, DEVICE(dev), NULL);
  98
  99     g_free(s->irq);
 100     s->irq = NULL;
 101 }
 102
 103 static void usb_ehci_pci_reset(DeviceState *dev)
 104 {
 105     PCIDevice *pci_dev = PCI_DEVICE(dev);
 106     EHCIPCIState *i = PCI_EHCI(pci_dev);
 107     EHCIState *s = &i->ehci;
 108
 109     ehci_reset(s);
 110 }
 111
 112 static void usb_ehci_pci_write_config(PCIDevice *dev, uint32_t addr,
 113                                       uint32_t val, int l)
 114 {
 115     EHCIPCIState *i = PCI_EHCI(dev);
 116     bool busmaster;
 117
 118     pci_default_write_config(dev, addr, val, l);
 119
 120     if (!range_covers_byte(addr, l, PCI_COMMAND)) {
 121         return;
 122     }
 123     busmaster = pci_get_word(dev->config + PCI_COMMAND) & PCI_COMMAND_MASTER;
 124     i->ehci.as = busmaster ? pci_get_address_space(dev) : &address_space_memory;
 125 }
 126
 127 static Property ehci_pci_properties[] = {
 128     DEFINE_PROP_UINT32("maxframes", EHCIPCIState, ehci.maxframes, 128),
 129     DEFINE_PROP_END_OF_LIST(),
 130 };
 131
 132 static const VMStateDescription vmstate_ehci_pci = {
 133     .name        = "ehci",
 134     .version_id  = 2,
 135     .minimum_version_id  = 1,
 136     .fields = (VMStateField[]) {
 137         VMSTATE_PCI_DEVICE(pcidev, EHCIPCIState),
 138         VMSTATE_STRUCT(ehci, EHCIPCIState, 2, vmstate_ehci, EHCIState),
 139         VMSTATE_END_OF_LIST()
 140     }
 141 };
 142
 143 static void ehci_class_init(ObjectClass *klass, void *data)
 144 {
 145     DeviceClass *dc = DEVICE_CLASS(klass);
 146     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 147
 148     k->realize = usb_ehci_pci_realize;
 149     k->exit = usb_ehci_pci_exit;
 150     k->class_id = PCI_CLASS_SERIAL_USB;
 151     k->config_write = usb_ehci_pci_write_config;
 152     dc->vmsd = &vmstate_ehci_pci;
 153     dc->props = ehci_pci_properties;
 154     dc->reset = usb_ehci_pci_reset;
 155 }
 156
 157 static const TypeInfo ehci_pci_type_info = {
 158     .name = TYPE_PCI_EHCI,
 159     .parent = TYPE_PCI_DEVICE,
 160     .instance_size = sizeof(EHCIPCIState),
 161     .instance_init = usb_ehci_pci_init,
 162     .abstract = true,
 163     .class_init = ehci_class_init,
 164 };
 165
 166 static void ehci_data_class_init(ObjectClass *klass, void *data)
 167 {
 168     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 169     DeviceClass *dc = DEVICE_CLASS(klass);
 170     EHCIPCIInfo *i = data;
 171
 172     k->vendor_id = i->vendor_id;
 173     k->device_id = i->device_id;
 174     k->revision = i->revision;
 175     set_bit(DEVICE_CATEGORY_USB, dc->categories);
 176     if (i->companion) {
 177         dc->hotpluggable = false;
 178     }
 179 }
 180
 181 static struct EHCIPCIInfo ehci_pci_info[] = {
 182     {
 183         .name      = "usb-ehci",
 184         .vendor_id = PCI_VENDOR_ID_INTEL,
 185         .device_id = PCI_DEVICE_ID_INTEL_82801D, /* ich4 */
 186         .revision  = 0x10,
 187     },{
 188         .name      = "ich9-usb-ehci1", /* 00:1d.7 */
 189         .vendor_id = PCI_VENDOR_ID_INTEL,
 190         .device_id = PCI_DEVICE_ID_INTEL_82801I_EHCI1,
 191         .revision  = 0x03,
 192         .companion = true,
 193     },{
 194         .name      = "ich9-usb-ehci2", /* 00:1a.7 */
 195         .vendor_id = PCI_VENDOR_ID_INTEL,
 196         .device_id = PCI_DEVICE_ID_INTEL_82801I_EHCI2,
 197         .revision  = 0x03,
 198         .companion = true,
 199     }
 200 };
 201
 202 static void ehci_pci_register_types(void)
 203 {
 204     TypeInfo ehci_type_info = {
 205         .parent        = TYPE_PCI_EHCI,
 206         .class_init    = ehci_data_class_init,
 207     };
 208     int i;
 209
 210     type_register_static(&ehci_pci_type_info);
 211
 212     for (i = 0; i < ARRAY_SIZE(ehci_pci_info); i++) {
 213         ehci_type_info.name = ehci_pci_info[i].name;
 214         ehci_type_info.class_data = ehci_pci_info + i;
 215         type_register(&ehci_type_info);
 216     }
 217 }
 218
 219 type_init(ehci_pci_register_types)
 220
 221 struct ehci_companions {
 222     const char *name;
 223     int func;
 224     int port;
 225 };
 226
 227 static const struct ehci_companions ich9_1d[] = {
 228     { .name = "ich9-usb-uhci1", .func = 0, .port = 0 },
 229     { .name = "ich9-usb-uhci2", .func = 1, .port = 2 },
 230     { .name = "ich9-usb-uhci3", .func = 2, .port = 4 },
 231 };
 232
 233 static const struct ehci_companions ich9_1a[] = {
 234     { .name = "ich9-usb-uhci4", .func = 0, .port = 0 },
 235     { .name = "ich9-usb-uhci5", .func = 1, .port = 2 },
 236     { .name = "ich9-usb-uhci6", .func = 2, .port = 4 },
 237 };
 238
 239 int ehci_create_ich9_with_companions(PCIBus *bus, int slot)
 240 {
 241     const struct ehci_companions *comp;
 242     PCIDevice *ehci, *uhci;
 243     BusState *usbbus;
 244     const char *name;
 245     int i;
 246
 247     switch (slot) {
 248     case 0x1d:
 249         name = "ich9-usb-ehci1";
 250         comp = ich9_1d;
 251         break;
 252     case 0x1a:
 253         name = "ich9-usb-ehci2";
 254         comp = ich9_1a;
 255         break;
 256     default:
 257         return -1;
 258     }
 259
 260     ehci = pci_create_multifunction(bus, PCI_DEVFN(slot, 7), true, name);
 261     qdev_init_nofail(&ehci->qdev);
 262     usbbus = QLIST_FIRST(&ehci->qdev.child_bus);
 263
 264     for (i = 0; i < 3; i++) {
 265         uhci = pci_create_multifunction(bus, PCI_DEVFN(slot, comp[i].func),
 266                                         true, comp[i].name);
 267         qdev_prop_set_string(&uhci->qdev, "masterbus", usbbus->name);
 268         qdev_prop_set_uint32(&uhci->qdev, "firstport", comp[i].port);
 269         qdev_init_nofail(&uhci->qdev);
 270     }
 271     return 0;
 272 }