xref: /openbmc/qemu/hw/ipmi/isa_ipmi_bt.c (revision 0c0c1fd9)
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 
394 #define TYPE_ISA_IPMI_BT "isa-ipmi-bt"
395 #define ISA_IPMI_BT(obj) OBJECT_CHECK(ISAIPMIBTDevice, (obj), \
396                                        TYPE_ISA_IPMI_BT)
397 
398 typedef struct ISAIPMIBTDevice {
399     ISADevice dev;
400     int32_t isairq;
401     IPMIBT bt;
402     uint32_t uuid;
403 } ISAIPMIBTDevice;
404 
405 static void ipmi_bt_get_fwinfo(struct IPMIInterface *ii, IPMIFwInfo *info)
406 {
407     ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii);
408 
409     info->interface_name = "bt";
410     info->interface_type = IPMI_SMBIOS_BT;
411     info->ipmi_spec_major_revision = 2;
412     info->ipmi_spec_minor_revision = 0;
413     info->base_address = iib->bt.io_base;
414     info->register_length = iib->bt.io_length;
415     info->register_spacing = 1;
416     info->memspace = IPMI_MEMSPACE_IO;
417     info->irq_type = IPMI_LEVEL_IRQ;
418     info->interrupt_number = iib->isairq;
419     info->i2c_slave_address = iib->bt.bmc->slave_addr;
420     info->uuid = iib->uuid;
421 }
422 
423 static void ipmi_bt_class_init(IPMIInterfaceClass *iic)
424 {
425     iic->init = ipmi_bt_init;
426     iic->set_atn = ipmi_bt_set_atn;
427     iic->handle_rsp = ipmi_bt_handle_rsp;
428     iic->handle_if_event = ipmi_bt_handle_event;
429     iic->set_irq_enable = ipmi_bt_set_irq_enable;
430     iic->reset = ipmi_bt_handle_reset;
431     iic->get_fwinfo = ipmi_bt_get_fwinfo;
432 }
433 
434 static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp)
435 {
436     ISADevice *isadev = ISA_DEVICE(dev);
437     ISAIPMIBTDevice *iib = ISA_IPMI_BT(dev);
438     IPMIInterface *ii = IPMI_INTERFACE(dev);
439     IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
440 
441     if (!iib->bt.bmc) {
442         error_setg(errp, "IPMI device requires a bmc attribute to be set");
443         return;
444     }
445 
446     iib->uuid = ipmi_next_uuid();
447 
448     iib->bt.bmc->intf = ii;
449 
450     iic->init(ii, errp);
451     if (*errp)
452         return;
453 
454     if (iib->isairq > 0) {
455         isa_init_irq(isadev, &iib->bt.irq, iib->isairq);
456         iib->bt.use_irq = 1;
457     }
458 
459     qdev_set_legacy_instance_id(dev, iib->bt.io_base, iib->bt.io_length);
460 
461     isa_register_ioport(isadev, &iib->bt.io, iib->bt.io_base);
462 }
463 
464 static const VMStateDescription vmstate_ISAIPMIBTDevice = {
465     .name = TYPE_IPMI_INTERFACE,
466     .version_id = 1,
467     .minimum_version_id = 1,
468     .fields      = (VMStateField[]) {
469         VMSTATE_BOOL(bt.obf_irq_set, ISAIPMIBTDevice),
470         VMSTATE_BOOL(bt.atn_irq_set, ISAIPMIBTDevice),
471         VMSTATE_BOOL(bt.use_irq, ISAIPMIBTDevice),
472         VMSTATE_BOOL(bt.irqs_enabled, ISAIPMIBTDevice),
473         VMSTATE_UINT32(bt.outpos, ISAIPMIBTDevice),
474         VMSTATE_VBUFFER_UINT32(bt.outmsg, ISAIPMIBTDevice, 1, NULL, 0,
475                                bt.outlen),
476         VMSTATE_VBUFFER_UINT32(bt.inmsg, ISAIPMIBTDevice, 1, NULL, 0,
477                                bt.inlen),
478         VMSTATE_UINT8(bt.control_reg, ISAIPMIBTDevice),
479         VMSTATE_UINT8(bt.mask_reg, ISAIPMIBTDevice),
480         VMSTATE_UINT8(bt.waiting_rsp, ISAIPMIBTDevice),
481         VMSTATE_UINT8(bt.waiting_seq, ISAIPMIBTDevice),
482         VMSTATE_END_OF_LIST()
483     }
484 };
485 
486 static void isa_ipmi_bt_init(Object *obj)
487 {
488     ISAIPMIBTDevice *iib = ISA_IPMI_BT(obj);
489 
490     ipmi_bmc_find_and_link(obj, (Object **) &iib->bt.bmc);
491 
492     vmstate_register(NULL, 0, &vmstate_ISAIPMIBTDevice, iib);
493 }
494 
495 static void *isa_ipmi_bt_get_backend_data(IPMIInterface *ii)
496 {
497     ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii);
498 
499     return &iib->bt;
500 }
501 
502 static Property ipmi_isa_properties[] = {
503     DEFINE_PROP_UINT32("ioport", ISAIPMIBTDevice, bt.io_base,  0xe4),
504     DEFINE_PROP_INT32("irq",   ISAIPMIBTDevice, isairq,  5),
505     DEFINE_PROP_END_OF_LIST(),
506 };
507 
508 static void isa_ipmi_bt_class_init(ObjectClass *oc, void *data)
509 {
510     DeviceClass *dc = DEVICE_CLASS(oc);
511     IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc);
512 
513     dc->realize = isa_ipmi_bt_realize;
514     dc->props = ipmi_isa_properties;
515 
516     iic->get_backend_data = isa_ipmi_bt_get_backend_data;
517     ipmi_bt_class_init(iic);
518 }
519 
520 static const TypeInfo isa_ipmi_bt_info = {
521     .name          = TYPE_ISA_IPMI_BT,
522     .parent        = TYPE_ISA_DEVICE,
523     .instance_size = sizeof(ISAIPMIBTDevice),
524     .instance_init = isa_ipmi_bt_init,
525     .class_init    = isa_ipmi_bt_class_init,
526     .interfaces = (InterfaceInfo[]) {
527         { TYPE_IPMI_INTERFACE },
528         { }
529     }
530 };
531 
532 static void ipmi_register_types(void)
533 {
534     type_register_static(&isa_ipmi_bt_info);
535 }
536 
537 type_init(ipmi_register_types)
538