hw/ipmi/ipmi.c

   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 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 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)