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 */ 18 struct 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 29 static 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 81 static 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 } 108 109 void 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