hw/ipmi/isa_ipmi_bt.c

   1 /*
   2  * QEMU ISA IPMI BT emulation
   3  *
   4  * Copyright (c) 2015 Corey Minyard, MontaVista Software, LLC
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "qemu/osdep.h"
  25 #include "qapi/error.h"
  26 #include "hw/hw.h"
  27 #include "hw/ipmi/ipmi.h"
  28 #include "hw/isa/isa.h"
  29 #include "hw/i386/pc.h"
  30
  31 /* Control register */
  32 #define IPMI_BT_CLR_WR_BIT         0
  33 #define IPMI_BT_CLR_RD_BIT         1
  34 #define IPMI_BT_H2B_ATN_BIT        2
  35 #define IPMI_BT_B2H_ATN_BIT        3
  36 #define IPMI_BT_SMS_ATN_BIT        4
  37 #define IPMI_BT_HBUSY_BIT          6
  38 #define IPMI_BT_BBUSY_BIT          7
  39
  40 #define IPMI_BT_CLR_WR_MASK        (1 << IPMI_BT_CLR_WR_BIT)
  41 #define IPMI_BT_GET_CLR_WR(d)      (((d) >> IPMI_BT_CLR_WR_BIT) & 0x1)
  42 #define IPMI_BT_SET_CLR_WR(d, v)   (d) = (((d) & ~IPMI_BT_CLR_WR_MASK) | \
  43                                        (((v & 1) << IPMI_BT_CLR_WR_BIT)))
  44
  45 #define IPMI_BT_CLR_RD_MASK        (1 << IPMI_BT_CLR_RD_BIT)
  46 #define IPMI_BT_GET_CLR_RD(d)      (((d) >> IPMI_BT_CLR_RD_BIT) & 0x1)
  47 #define IPMI_BT_SET_CLR_RD(d, v)   (d) = (((d) & ~IPMI_BT_CLR_RD_MASK) | \
  48                                        (((v & 1) << IPMI_BT_CLR_RD_BIT)))
  49
  50 #define IPMI_BT_H2B_ATN_MASK       (1 << IPMI_BT_H2B_ATN_BIT)
  51 #define IPMI_BT_GET_H2B_ATN(d)     (((d) >> IPMI_BT_H2B_ATN_BIT) & 0x1)
  52 #define IPMI_BT_SET_H2B_ATN(d, v)  (d) = (((d) & ~IPMI_BT_H2B_ATN_MASK) | \
  53                                         (((v & 1) << IPMI_BT_H2B_ATN_BIT)))
  54
  55 #define IPMI_BT_B2H_ATN_MASK       (1 << IPMI_BT_B2H_ATN_BIT)
  56 #define IPMI_BT_GET_B2H_ATN(d)     (((d) >> IPMI_BT_B2H_ATN_BIT) & 0x1)
  57 #define IPMI_BT_SET_B2H_ATN(d, v)  (d) = (((d) & ~IPMI_BT_B2H_ATN_MASK) | \
  58                                         (((v & 1) << IPMI_BT_B2H_ATN_BIT)))
  59
  60 #define IPMI_BT_SMS_ATN_MASK       (1 << IPMI_BT_SMS_ATN_BIT)
  61 #define IPMI_BT_GET_SMS_ATN(d)     (((d) >> IPMI_BT_SMS_ATN_BIT) & 0x1)
  62 #define IPMI_BT_SET_SMS_ATN(d, v)  (d) = (((d) & ~IPMI_BT_SMS_ATN_MASK) | \
  63                                         (((v & 1) << IPMI_BT_SMS_ATN_BIT)))
  64
  65 #define IPMI_BT_HBUSY_MASK         (1 << IPMI_BT_HBUSY_BIT)
  66 #define IPMI_BT_GET_HBUSY(d)       (((d) >> IPMI_BT_HBUSY_BIT) & 0x1)
  67 #define IPMI_BT_SET_HBUSY(d, v)    (d) = (((d) & ~IPMI_BT_HBUSY_MASK) | \
  68                                        (((v & 1) << IPMI_BT_HBUSY_BIT)))
  69
  70 #define IPMI_BT_BBUSY_MASK         (1 << IPMI_BT_BBUSY_BIT)
  71 #define IPMI_BT_GET_BBUSY(d)       (((d) >> IPMI_BT_BBUSY_BIT) & 0x1)
  72 #define IPMI_BT_SET_BBUSY(d, v)    (d) = (((d) & ~IPMI_BT_BBUSY_MASK) | \
  73                                        (((v & 1) << IPMI_BT_BBUSY_BIT)))
  74
  75
  76 /* Mask register */
  77 #define IPMI_BT_B2H_IRQ_EN_BIT     0
  78 #define IPMI_BT_B2H_IRQ_BIT        1
  79
  80 #define IPMI_BT_B2H_IRQ_EN_MASK      (1 << IPMI_BT_B2H_IRQ_EN_BIT)
  81 #define IPMI_BT_GET_B2H_IRQ_EN(d)    (((d) >> IPMI_BT_B2H_IRQ_EN_BIT) & 0x1)
  82 #define IPMI_BT_SET_B2H_IRQ_EN(d, v) (d) = (((d) & ~IPMI_BT_B2H_IRQ_EN_MASK) | \
  83                                         (((v & 1) << IPMI_BT_B2H_IRQ_EN_BIT)))
  84
  85 #define IPMI_BT_B2H_IRQ_MASK         (1 << IPMI_BT_B2H_IRQ_BIT)
  86 #define IPMI_BT_GET_B2H_IRQ(d)       (((d) >> IPMI_BT_B2H_IRQ_BIT) & 0x1)
  87 #define IPMI_BT_SET_B2H_IRQ(d, v)    (d) = (((d) & ~IPMI_BT_B2H_IRQ_MASK) | \
  88                                         (((v & 1) << IPMI_BT_B2H_IRQ_BIT)))
  89
  90 typedef struct IPMIBT {
  91     IPMIBmc *bmc;
  92
  93     bool do_wake;
  94
  95     qemu_irq irq;
  96
  97     uint32_t io_base;
  98     unsigned long io_length;
  99     MemoryRegion io;
 100
 101     bool obf_irq_set;
 102     bool atn_irq_set;
 103     bool use_irq;
 104     bool irqs_enabled;
 105
 106     uint8_t outmsg[MAX_IPMI_MSG_SIZE];
 107     uint32_t outpos;
 108     uint32_t outlen;
 109
 110     uint8_t inmsg[MAX_IPMI_MSG_SIZE];
 111     uint32_t inlen;
 112
 113     uint8_t control_reg;
 114     uint8_t mask_reg;
 115
 116     /*
 117      * This is a response number that we send with the command to make
 118      * sure that the response matches the command.
 119      */
 120     uint8_t waiting_rsp;
 121     uint8_t waiting_seq;
 122 } IPMIBT;
 123
 124 #define IPMI_CMD_GET_BT_INTF_CAP        0x36
 125
 126 static void ipmi_bt_handle_event(IPMIInterface *ii)
 127 {
 128     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 129     IPMIBT *ib = iic->get_backend_data(ii);
 130
 131     if (ib->inlen < 4) {
 132         goto out;
 133     }
 134     /* Note that overruns are handled by handle_command */
 135     if (ib->inmsg[0] != (ib->inlen - 1)) {
 136         /* Length mismatch, just ignore. */
 137         IPMI_BT_SET_BBUSY(ib->control_reg, 1);
 138         ib->inlen = 0;
 139         goto out;
 140     }
 141     if ((ib->inmsg[1] == (IPMI_NETFN_APP << 2)) &&
 142                         (ib->inmsg[3] == IPMI_CMD_GET_BT_INTF_CAP)) {
 143         /* We handle this one ourselves. */
 144         ib->outmsg[0] = 9;
 145         ib->outmsg[1] = ib->inmsg[1] | 0x04;
 146         ib->outmsg[2] = ib->inmsg[2];
 147         ib->outmsg[3] = ib->inmsg[3];
 148         ib->outmsg[4] = 0;
 149         ib->outmsg[5] = 1; /* Only support 1 outstanding request. */
 150         if (sizeof(ib->inmsg) > 0xff) { /* Input buffer size */
 151             ib->outmsg[6] = 0xff;
 152         } else {
 153             ib->outmsg[6] = (unsigned char) sizeof(ib->inmsg);
 154         }
 155         if (sizeof(ib->outmsg) > 0xff) { /* Output buffer size */
 156             ib->outmsg[7] = 0xff;
 157         } else {
 158             ib->outmsg[7] = (unsigned char) sizeof(ib->outmsg);
 159         }
 160         ib->outmsg[8] = 10; /* Max request to response time */
 161         ib->outmsg[9] = 0; /* Don't recommend retries */
 162         ib->outlen = 10;
 163         IPMI_BT_SET_BBUSY(ib->control_reg, 0);
 164         IPMI_BT_SET_B2H_ATN(ib->control_reg, 1);
 165         if (ib->use_irq && ib->irqs_enabled &&
 166                 !IPMI_BT_GET_B2H_IRQ(ib->mask_reg) &&
 167                 IPMI_BT_GET_B2H_IRQ_EN(ib->mask_reg)) {
 168             IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 1);
 169             qemu_irq_raise(ib->irq);
 170         }
 171         goto out;
 172     }
 173     ib->waiting_seq = ib->inmsg[2];
 174     ib->inmsg[2] = ib->inmsg[1];
 175     {
 176         IPMIBmcClass *bk = IPMI_BMC_GET_CLASS(ib->bmc);
 177         bk->handle_command(ib->bmc, ib->inmsg + 2, ib->inlen - 2,
 178                            sizeof(ib->inmsg), ib->waiting_rsp);
 179     }
 180  out:
 181     return;
 182 }
 183
 184 static void ipmi_bt_handle_rsp(IPMIInterface *ii, uint8_t msg_id,
 185                                 unsigned char *rsp, unsigned int rsp_len)
 186 {
 187     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 188     IPMIBT *ib = iic->get_backend_data(ii);
 189
 190     if (ib->waiting_rsp == msg_id) {
 191         ib->waiting_rsp++;
 192         if (rsp_len > (sizeof(ib->outmsg) - 2)) {
 193             ib->outmsg[0] = 4;
 194             ib->outmsg[1] = rsp[0];
 195             ib->outmsg[2] = ib->waiting_seq;
 196             ib->outmsg[3] = rsp[1];
 197             ib->outmsg[4] = IPMI_CC_CANNOT_RETURN_REQ_NUM_BYTES;
 198             ib->outlen = 5;
 199         } else {
 200             ib->outmsg[0] = rsp_len + 1;
 201             ib->outmsg[1] = rsp[0];
 202             ib->outmsg[2] = ib->waiting_seq;
 203             memcpy(ib->outmsg + 3, rsp + 1, rsp_len - 1);
 204             ib->outlen = rsp_len + 2;
 205         }
 206         IPMI_BT_SET_BBUSY(ib->control_reg, 0);
 207         IPMI_BT_SET_B2H_ATN(ib->control_reg, 1);
 208         if (ib->use_irq && ib->irqs_enabled &&
 209                 !IPMI_BT_GET_B2H_IRQ(ib->mask_reg) &&
 210                 IPMI_BT_GET_B2H_IRQ_EN(ib->mask_reg)) {
 211             IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 1);
 212             qemu_irq_raise(ib->irq);
 213         }
 214     }
 215 }
 216
 217
 218 static uint64_t ipmi_bt_ioport_read(void *opaque, hwaddr addr, unsigned size)
 219 {
 220     IPMIInterface *ii = opaque;
 221     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 222     IPMIBT *ib = iic->get_backend_data(ii);
 223     uint32_t ret = 0xff;
 224
 225     switch (addr & 3) {
 226     case 0:
 227         ret = ib->control_reg;
 228         break;
 229     case 1:
 230         if (ib->outpos < ib->outlen) {
 231             ret = ib->outmsg[ib->outpos];
 232             ib->outpos++;
 233             if (ib->outpos == ib->outlen) {
 234                 ib->outpos = 0;
 235                 ib->outlen = 0;
 236             }
 237         } else {
 238             ret = 0xff;
 239         }
 240         break;
 241     case 2:
 242         ret = ib->mask_reg;
 243         break;
 244     }
 245     return ret;
 246 }
 247
 248 static void ipmi_bt_signal(IPMIBT *ib, IPMIInterface *ii)
 249 {
 250     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 251
 252     ib->do_wake = 1;
 253     while (ib->do_wake) {
 254         ib->do_wake = 0;
 255         iic->handle_if_event(ii);
 256     }
 257 }
 258
 259 static void ipmi_bt_ioport_write(void *opaque, hwaddr addr, uint64_t val,
 260                                  unsigned size)
 261 {
 262     IPMIInterface *ii = opaque;
 263     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 264     IPMIBT *ib = iic->get_backend_data(ii);
 265
 266     switch (addr & 3) {
 267     case 0:
 268         if (IPMI_BT_GET_CLR_WR(val)) {
 269             ib->inlen = 0;
 270         }
 271         if (IPMI_BT_GET_CLR_RD(val)) {
 272             ib->outpos = 0;
 273         }
 274         if (IPMI_BT_GET_B2H_ATN(val)) {
 275             IPMI_BT_SET_B2H_ATN(ib->control_reg, 0);
 276         }
 277         if (IPMI_BT_GET_SMS_ATN(val)) {
 278             IPMI_BT_SET_SMS_ATN(ib->control_reg, 0);
 279         }
 280         if (IPMI_BT_GET_HBUSY(val)) {
 281             /* Toggle */
 282             IPMI_BT_SET_HBUSY(ib->control_reg,
 283                               !IPMI_BT_GET_HBUSY(ib->control_reg));
 284         }
 285         if (IPMI_BT_GET_H2B_ATN(val)) {
 286             IPMI_BT_SET_BBUSY(ib->control_reg, 1);
 287             ipmi_bt_signal(ib, ii);
 288         }
 289         break;
 290
 291     case 1:
 292         if (ib->inlen < sizeof(ib->inmsg)) {
 293             ib->inmsg[ib->inlen] = val;
 294         }
 295         ib->inlen++;
 296         break;
 297
 298     case 2:
 299         if (IPMI_BT_GET_B2H_IRQ_EN(val) !=
 300                         IPMI_BT_GET_B2H_IRQ_EN(ib->mask_reg)) {
 301             if (IPMI_BT_GET_B2H_IRQ_EN(val)) {
 302                 if (IPMI_BT_GET_B2H_ATN(ib->control_reg) ||
 303                         IPMI_BT_GET_SMS_ATN(ib->control_reg)) {
 304                     IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 1);
 305                     qemu_irq_raise(ib->irq);
 306                 }
 307                 IPMI_BT_SET_B2H_IRQ_EN(ib->mask_reg, 1);
 308             } else {
 309                 if (IPMI_BT_GET_B2H_IRQ(ib->mask_reg)) {
 310                     IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 0);
 311                     qemu_irq_lower(ib->irq);
 312                 }
 313                 IPMI_BT_SET_B2H_IRQ_EN(ib->mask_reg, 0);
 314             }
 315         }
 316         if (IPMI_BT_GET_B2H_IRQ(val) && IPMI_BT_GET_B2H_IRQ(ib->mask_reg)) {
 317             IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 0);
 318             qemu_irq_lower(ib->irq);
 319         }
 320         break;
 321     }
 322 }
 323
 324 static const MemoryRegionOps ipmi_bt_io_ops = {
 325     .read = ipmi_bt_ioport_read,
 326     .write = ipmi_bt_ioport_write,
 327     .impl = {
 328         .min_access_size = 1,
 329         .max_access_size = 1,
 330     },
 331     .endianness = DEVICE_LITTLE_ENDIAN,
 332 };
 333
 334 static void ipmi_bt_set_atn(IPMIInterface *ii, int val, int irq)
 335 {
 336     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 337     IPMIBT *ib = iic->get_backend_data(ii);
 338
 339     if (!!val == IPMI_BT_GET_SMS_ATN(ib->control_reg)) {
 340         return;
 341     }
 342
 343     IPMI_BT_SET_SMS_ATN(ib->control_reg, val);
 344     if (val) {
 345         if (irq && ib->use_irq && ib->irqs_enabled &&
 346                 !IPMI_BT_GET_B2H_ATN(ib->control_reg) &&
 347                 IPMI_BT_GET_B2H_IRQ_EN(ib->mask_reg)) {
 348             IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 1);
 349             qemu_irq_raise(ib->irq);
 350         }
 351     } else {
 352         if (!IPMI_BT_GET_B2H_ATN(ib->control_reg) &&
 353                 IPMI_BT_GET_B2H_IRQ(ib->mask_reg)) {
 354             IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 0);
 355             qemu_irq_lower(ib->irq);
 356         }
 357     }
 358 }
 359
 360 static void ipmi_bt_handle_reset(IPMIInterface *ii, bool is_cold)
 361 {
 362     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 363     IPMIBT *ib = iic->get_backend_data(ii);
 364
 365     if (is_cold) {
 366         /* Disable the BT interrupt on reset */
 367         if (IPMI_BT_GET_B2H_IRQ(ib->mask_reg)) {
 368             IPMI_BT_SET_B2H_IRQ(ib->mask_reg, 0);
 369             qemu_irq_lower(ib->irq);
 370         }
 371         IPMI_BT_SET_B2H_IRQ_EN(ib->mask_reg, 0);
 372     }
 373 }
 374
 375 static void ipmi_bt_set_irq_enable(IPMIInterface *ii, int val)
 376 {
 377     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 378     IPMIBT *ib = iic->get_backend_data(ii);
 379
 380     ib->irqs_enabled = val;
 381 }
 382
 383 static void ipmi_bt_init(IPMIInterface *ii, Error **errp)
 384 {
 385     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 386     IPMIBT *ib = iic->get_backend_data(ii);
 387
 388     ib->io_length = 3;
 389
 390     memory_region_init_io(&ib->io, NULL, &ipmi_bt_io_ops, ii, "ipmi-bt", 3);
 391 }
 392
 393 static void ipmi_bt_class_init(IPMIInterfaceClass *iic)
 394 {
 395     iic->init = ipmi_bt_init;
 396     iic->set_atn = ipmi_bt_set_atn;
 397     iic->handle_rsp = ipmi_bt_handle_rsp;
 398     iic->handle_if_event = ipmi_bt_handle_event;
 399     iic->set_irq_enable = ipmi_bt_set_irq_enable;
 400     iic->reset = ipmi_bt_handle_reset;
 401 }
 402
 403
 404 #define TYPE_ISA_IPMI_BT "isa-ipmi-bt"
 405 #define ISA_IPMI_BT(obj) OBJECT_CHECK(ISAIPMIBTDevice, (obj), \
 406                                        TYPE_ISA_IPMI_BT)
 407
 408 typedef struct ISAIPMIBTDevice {
 409     ISADevice dev;
 410     int32_t isairq;
 411     IPMIBT bt;
 412     IPMIFwInfo fwinfo;
 413 } ISAIPMIBTDevice;
 414
 415 static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp)
 416 {
 417     ISADevice *isadev = ISA_DEVICE(dev);
 418     ISAIPMIBTDevice *iib = ISA_IPMI_BT(dev);
 419     IPMIInterface *ii = IPMI_INTERFACE(dev);
 420     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
 421
 422     if (!iib->bt.bmc) {
 423         error_setg(errp, "IPMI device requires a bmc attribute to be set");
 424         return;
 425     }
 426
 427     iib->bt.bmc->intf = ii;
 428
 429     iic->init(ii, errp);
 430     if (*errp)
 431         return;
 432
 433     if (iib->isairq > 0) {
 434         isa_init_irq(isadev, &iib->bt.irq, iib->isairq);
 435         iib->bt.use_irq = 1;
 436     }
 437
 438     qdev_set_legacy_instance_id(dev, iib->bt.io_base, iib->bt.io_length);
 439
 440     isa_register_ioport(isadev, &iib->bt.io, iib->bt.io_base);
 441
 442     iib->fwinfo.interface_name = "bt";
 443     iib->fwinfo.interface_type = IPMI_SMBIOS_BT;
 444     iib->fwinfo.ipmi_spec_major_revision = 2;
 445     iib->fwinfo.ipmi_spec_minor_revision = 0;
 446     iib->fwinfo.base_address = iib->bt.io_base;
 447     iib->fwinfo.register_length = iib->bt.io_length;
 448     iib->fwinfo.register_spacing = 1;
 449     iib->fwinfo.memspace = IPMI_MEMSPACE_IO;
 450     iib->fwinfo.irq_type = IPMI_LEVEL_IRQ;
 451     iib->fwinfo.interrupt_number = iib->isairq;
 452     iib->fwinfo.acpi_parent = "\\_SB.PCI0.ISA";
 453     iib->fwinfo.i2c_slave_address = iib->bt.bmc->slave_addr;
 454     ipmi_add_fwinfo(&iib->fwinfo, errp);
 455 }
 456
 457 static const VMStateDescription vmstate_ISAIPMIBTDevice = {
 458     .name = TYPE_IPMI_INTERFACE,
 459     .version_id = 1,
 460     .minimum_version_id = 1,
 461     .fields      = (VMStateField[]) {
 462         VMSTATE_BOOL(bt.obf_irq_set, ISAIPMIBTDevice),
 463         VMSTATE_BOOL(bt.atn_irq_set, ISAIPMIBTDevice),
 464         VMSTATE_BOOL(bt.use_irq, ISAIPMIBTDevice),
 465         VMSTATE_BOOL(bt.irqs_enabled, ISAIPMIBTDevice),
 466         VMSTATE_UINT32(bt.outpos, ISAIPMIBTDevice),
 467         VMSTATE_VBUFFER_UINT32(bt.outmsg, ISAIPMIBTDevice, 1, NULL, 0,
 468                                bt.outlen),
 469         VMSTATE_VBUFFER_UINT32(bt.inmsg, ISAIPMIBTDevice, 1, NULL, 0,
 470                                bt.inlen),
 471         VMSTATE_UINT8(bt.control_reg, ISAIPMIBTDevice),
 472         VMSTATE_UINT8(bt.mask_reg, ISAIPMIBTDevice),
 473         VMSTATE_UINT8(bt.waiting_rsp, ISAIPMIBTDevice),
 474         VMSTATE_UINT8(bt.waiting_seq, ISAIPMIBTDevice),
 475         VMSTATE_END_OF_LIST()
 476     }
 477 };
 478
 479 static void isa_ipmi_bt_init(Object *obj)
 480 {
 481     ISAIPMIBTDevice *iib = ISA_IPMI_BT(obj);
 482
 483     ipmi_bmc_find_and_link(obj, (Object **) &iib->bt.bmc);
 484
 485     vmstate_register(NULL, 0, &vmstate_ISAIPMIBTDevice, iib);
 486 }
 487
 488 static void *isa_ipmi_bt_get_backend_data(IPMIInterface *ii)
 489 {
 490     ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii);
 491
 492     return &iib->bt;
 493 }
 494
 495 static Property ipmi_isa_properties[] = {
 496     DEFINE_PROP_UINT32("ioport", ISAIPMIBTDevice, bt.io_base,  0xe4),
 497     DEFINE_PROP_INT32("irq",   ISAIPMIBTDevice, isairq,  5),
 498     DEFINE_PROP_END_OF_LIST(),
 499 };
 500
 501 static void isa_ipmi_bt_class_init(ObjectClass *oc, void *data)
 502 {
 503     DeviceClass *dc = DEVICE_CLASS(oc);
 504     IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc);
 505
 506     dc->realize = isa_ipmi_bt_realize;
 507     dc->props = ipmi_isa_properties;
 508
 509     iic->get_backend_data = isa_ipmi_bt_get_backend_data;
 510     ipmi_bt_class_init(iic);
 511 }
 512
 513 static const TypeInfo isa_ipmi_bt_info = {
 514     .name          = TYPE_ISA_IPMI_BT,
 515     .parent        = TYPE_ISA_DEVICE,
 516     .instance_size = sizeof(ISAIPMIBTDevice),
 517     .instance_init = isa_ipmi_bt_init,
 518     .class_init    = isa_ipmi_bt_class_init,
 519     .interfaces = (InterfaceInfo[]) {
 520         { TYPE_IPMI_INTERFACE },
 521         { }
 522     }
 523 };
 524
 525 static void ipmi_register_types(void)
 526 {
 527     type_register_static(&isa_ipmi_bt_info);
 528 }
 529
 530 type_init(ipmi_register_types)