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/hw.h"
  27 #include "hw/ipmi/ipmi.h"
  28 #include "sysemu/sysemu.h"
  29 #include "qmp-commands.h"
  30 #include "qom/object_interfaces.h"
  31 #include "qapi/visitor.h"
  32
  33 static int ipmi_do_hw_op(IPMIInterface *s, enum ipmi_op op, int checkonly)
  34 {
  35     switch (op) {
  36     case IPMI_RESET_CHASSIS:
  37         if (checkonly) {
  38             return 0;
  39         }
  40         qemu_system_reset_request();
  41         return 0;
  42
  43     case IPMI_POWEROFF_CHASSIS:
  44         if (checkonly) {
  45             return 0;
  46         }
  47         qemu_system_powerdown_request();
  48         return 0;
  49
  50     case IPMI_SEND_NMI:
  51         if (checkonly) {
  52             return 0;
  53         }
  54         qemu_mutex_lock_iothread();
  55         qmp_inject_nmi(NULL);
  56         qemu_mutex_unlock_iothread();
  57         return 0;
  58
  59     case IPMI_POWERCYCLE_CHASSIS:
  60     case IPMI_PULSE_DIAG_IRQ:
  61     case IPMI_SHUTDOWN_VIA_ACPI_OVERTEMP:
  62     case IPMI_POWERON_CHASSIS:
  63     default:
  64         return IPMI_CC_COMMAND_NOT_SUPPORTED;
  65     }
  66 }
  67
  68 static void ipmi_interface_class_init(ObjectClass *class, void *data)
  69 {
  70     IPMIInterfaceClass *ik = IPMI_INTERFACE_CLASS(class);
  71
  72     ik->do_hw_op = ipmi_do_hw_op;
  73 }
  74
  75 static TypeInfo ipmi_interface_type_info = {
  76     .name = TYPE_IPMI_INTERFACE,
  77     .parent = TYPE_INTERFACE,
  78     .class_size = sizeof(IPMIInterfaceClass),
  79     .class_init = ipmi_interface_class_init,
  80 };
  81
  82 static void isa_ipmi_bmc_check(Object *obj, const char *name,
  83                                Object *val, Error **errp)
  84 {
  85     IPMIBmc *bmc = IPMI_BMC(val);
  86
  87     if (bmc->intf)
  88         error_setg(errp, "BMC object is already in use");
  89 }
  90
  91 void ipmi_bmc_find_and_link(Object *obj, Object **bmc)
  92 {
  93     object_property_add_link(obj, "bmc", TYPE_IPMI_BMC, bmc,
  94                              isa_ipmi_bmc_check,
  95                              OBJ_PROP_LINK_UNREF_ON_RELEASE,
  96                              &error_abort);
  97 }
  98
  99 static Property ipmi_bmc_properties[] = {
 100     DEFINE_PROP_UINT8("slave_addr",  IPMIBmc, slave_addr, 0x20),
 101     DEFINE_PROP_END_OF_LIST(),
 102 };
 103
 104 static void bmc_class_init(ObjectClass *oc, void *data)
 105 {
 106     DeviceClass *dc = DEVICE_CLASS(oc);
 107
 108     dc->props = ipmi_bmc_properties;
 109 }
 110
 111 static TypeInfo ipmi_bmc_type_info = {
 112     .name = TYPE_IPMI_BMC,
 113     .parent = TYPE_DEVICE,
 114     .instance_size = sizeof(IPMIBmc),
 115     .abstract = true,
 116     .class_size = sizeof(IPMIBmcClass),
 117     .class_init = bmc_class_init,
 118 };
 119
 120 static void ipmi_register_types(void)
 121 {
 122     type_register_static(&ipmi_interface_type_info);
 123     type_register_static(&ipmi_bmc_type_info);
 124 }
 125
 126 type_init(ipmi_register_types)
 127
 128 static IPMIFwInfo *ipmi_fw_info;
 129 static unsigned int ipmi_fw_info_len;
 130
 131 static uint32_t current_uuid = 1;
 132
 133 void ipmi_add_fwinfo(IPMIFwInfo *info, Error **errp)
 134 {
 135     info->uuid = current_uuid++;
 136     ipmi_fw_info = g_realloc(ipmi_fw_info,
 137                              sizeof(*ipmi_fw_info) * (ipmi_fw_info_len + 1));
 138     ipmi_fw_info[ipmi_fw_info_len] = *info;
 139 }
 140
 141 IPMIFwInfo *ipmi_first_fwinfo(void)
 142 {
 143     return ipmi_fw_info;
 144 }
 145
 146 IPMIFwInfo *ipmi_next_fwinfo(IPMIFwInfo *current)
 147 {
 148     current++;
 149     if (current >= &ipmi_fw_info[ipmi_fw_info_len]) {
 150         return NULL;
 151     }
 152     return current;
 153 }