xref: /openbmc/qemu/hw/ipmi/ipmi.c (revision 9d49b1c9edf829e571093088ddff0b73db3110c6)
1  /*
2   * QEMU IPMI 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  
25  #include "qemu/osdep.h"
26  #include "hw/ipmi/ipmi.h"
27  #include "hw/qdev-properties.h"
28  #include "qom/object_interfaces.h"
29  #include "sysemu/runstate.h"
30  #include "qapi/error.h"
31  #include "qemu/module.h"
32  #include "hw/nmi.h"
33  
34  static uint32_t ipmi_current_uuid = 1;
35  
36  uint32_t ipmi_next_uuid(void)
37  {
38      return ipmi_current_uuid++;
39  }
40  
41  static int ipmi_do_hw_op(IPMIInterface *s, enum ipmi_op op, int checkonly)
42  {
43      switch (op) {
44      case IPMI_RESET_CHASSIS:
45          if (checkonly) {
46              return 0;
47          }
48          qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
49          return 0;
50  
51      case IPMI_POWEROFF_CHASSIS:
52          if (checkonly) {
53              return 0;
54          }
55          qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
56          return 0;
57  
58      case IPMI_SEND_NMI:
59          if (checkonly) {
60              return 0;
61          }
62          /* We don't care what CPU we use. */
63          nmi_monitor_handle(0, NULL);
64          return 0;
65  
66      case IPMI_SHUTDOWN_VIA_ACPI_OVERTEMP:
67          if (checkonly) {
68              return 0;
69          }
70          qemu_system_powerdown_request();
71          return 0;
72  
73      case IPMI_POWERCYCLE_CHASSIS:
74      case IPMI_PULSE_DIAG_IRQ:
75      case IPMI_POWERON_CHASSIS:
76      default:
77          return IPMI_CC_COMMAND_NOT_SUPPORTED;
78      }
79  }
80  
81  static void ipmi_interface_class_init(ObjectClass *class, void *data)
82  {
83      IPMIInterfaceClass *ik = IPMI_INTERFACE_CLASS(class);
84  
85      ik->do_hw_op = ipmi_do_hw_op;
86  }
87  
88  static const TypeInfo ipmi_interface_type_info = {
89      .name = TYPE_IPMI_INTERFACE,
90      .parent = TYPE_INTERFACE,
91      .class_size = sizeof(IPMIInterfaceClass),
92      .class_init = ipmi_interface_class_init,
93  };
94  
95  static void isa_ipmi_bmc_check(const Object *obj, const char *name,
96                                 Object *val, Error **errp)
97  {
98      IPMIBmc *bmc = IPMI_BMC(val);
99  
100      if (bmc->intf)
101          error_setg(errp, "BMC object is already in use");
102  }
103  
104  void ipmi_bmc_find_and_link(Object *obj, Object **bmc)
105  {
106      object_property_add_link(obj, "bmc", TYPE_IPMI_BMC, bmc,
107                               isa_ipmi_bmc_check,
108                               OBJ_PROP_LINK_STRONG);
109  }
110  
111  static Property ipmi_bmc_properties[] = {
112      DEFINE_PROP_UINT8("slave_addr",  IPMIBmc, slave_addr, 0x20),
113      DEFINE_PROP_END_OF_LIST(),
114  };
115  
116  static void bmc_class_init(ObjectClass *oc, void *data)
117  {
118      DeviceClass *dc = DEVICE_CLASS(oc);
119  
120      device_class_set_props(dc, ipmi_bmc_properties);
121  }
122  
123  static const TypeInfo ipmi_bmc_type_info = {
124      .name = TYPE_IPMI_BMC,
125      .parent = TYPE_DEVICE,
126      .instance_size = sizeof(IPMIBmc),
127      .abstract = true,
128      .class_size = sizeof(IPMIBmcClass),
129      .class_init = bmc_class_init,
130  };
131  
132  static void ipmi_register_types(void)
133  {
134      type_register_static(&ipmi_interface_type_info);
135      type_register_static(&ipmi_bmc_type_info);
136  }
137  
138  type_init(ipmi_register_types)
139