LXR qemu/hw/smbios/smbios_type

   1/*
   2 * IPMI SMBIOS firmware handling
   3 *
   4 * Copyright (c) 2015,2016 Corey Minyard, MontaVista Software, LLC
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7 * See the COPYING file in the top-level directory.
   8 */
   9
  10#include "qemu/osdep.h"
  11#include "hw/ipmi/ipmi.h"
  12#include "hw/smbios/ipmi.h"
  13#include "hw/smbios/smbios.h"
  14#include "qemu/error-report.h"
  15#include "smbios_build.h"
  16
  17/* SMBIOS type 38 - IPMI */
  18struct smbios_type_38 {
  19    struct smbios_structure_header header;
  20    uint8_t interface_type;
  21    uint8_t ipmi_spec_revision;
  22    uint8_t i2c_slave_address;
  23    uint8_t nv_storage_device_address;
  24    uint64_t base_address;
  25    uint8_t base_address_modifier;
  26    uint8_t interrupt_number;
  27} QEMU_PACKED;
  28
  29static void smbios_build_one_type_38(IPMIFwInfo *info)
  30{
  31    uint64_t baseaddr = info->base_address;
  32    SMBIOS_BUILD_TABLE_PRE(38, 0x3000, true);
  33
  34    t->interface_type = info->interface_type;
  35    t->ipmi_spec_revision = ((info->ipmi_spec_major_revision << 4)
  36                             | info->ipmi_spec_minor_revision);
  37    t->i2c_slave_address = info->i2c_slave_address;
  38    t->nv_storage_device_address = 0;
  39
  40    assert(info->ipmi_spec_minor_revision <= 15);
  41    assert(info->ipmi_spec_major_revision <= 15);
  42
  43    /* or 1 to set it to I/O space */
  44    switch (info->memspace) {
  45    case IPMI_MEMSPACE_IO:
  46        baseaddr |= 1;
  47        break;
  48    case IPMI_MEMSPACE_MEM32:
  49    case IPMI_MEMSPACE_MEM64:
  50        break;
  51    case IPMI_MEMSPACE_SMBUS:
  52        baseaddr <<= 1;
  53        break;
  54    }
  55
  56    t->base_address = cpu_to_le64(baseaddr);
  57
  58    t->base_address_modifier = 0;
  59    if (info->irq_type == IPMI_LEVEL_IRQ) {
  60        t->base_address_modifier |= 1;
  61    }
  62    switch (info->register_spacing) {
  63    case 1:
  64        break;
  65    case 4:
  66        t->base_address_modifier |= 1 << 6;
  67        break;
  68    case 16:
  69        t->base_address_modifier |= 2 << 6;
  70        break;
  71    default:
  72        error_report("IPMI register spacing %d is not compatible with"
  73                     " SMBIOS, ignoring this entry.", info->register_spacing);
  74        return;
  75    }
  76    t->interrupt_number = info->interrupt_number;
  77
  78    SMBIOS_BUILD_TABLE_POST;
  79}
  80
  81static void smbios_add_ipmi_devices(BusState *bus)
  82{
  83    BusChild *kid;
  84
  85    QTAILQ_FOREACH(kid, &bus->children,  sibling) {
  86        DeviceState *dev = kid->child;
  87        Object *obj = object_dynamic_cast(OBJECT(dev), TYPE_IPMI_INTERFACE);
  88        BusState *childbus;
  89
  90        if (obj) {
  91            IPMIInterface *ii;
  92            IPMIInterfaceClass *iic;
  93            IPMIFwInfo info;
  94
  95            ii = IPMI_INTERFACE(obj);
  96            iic = IPMI_INTERFACE_GET_CLASS(obj);
  97            memset(&info, 0, sizeof(info));
  98            iic->get_fwinfo(ii, &info);
  99            smbios_build_one_type_38(&info);
 100            continue;
 101        }
 102
 103        QLIST_FOREACH(childbus, &dev->child_bus, sibling) {
 104            smbios_add_ipmi_devices(childbus);
 105        }
 106    }
 107}
 108
 109void smbios_build_type_38_table(void)
 110{
 111    BusState *bus;
 112
 113    bus = sysbus_get_default();
 114    if (bus) {
 115        smbios_add_ipmi_devices(bus);
 116    }
 117}
 118