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