1 /* 2 * IPMI ACPI 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/acpi/aml-build.h" 13 #include "hw/acpi/acpi.h" 14 #include "hw/acpi/ipmi.h" 15 16 static Aml *aml_ipmi_crs(IPMIFwInfo *info) 17 { 18 Aml *crs = aml_resource_template(); 19 20 /* 21 * The base address is fixed and cannot change. That may be different 22 * if someone does PCI, but we aren't there yet. 23 */ 24 switch (info->memspace) { 25 case IPMI_MEMSPACE_IO: 26 aml_append(crs, aml_io(AML_DECODE16, info->base_address, 27 info->base_address + info->register_length - 1, 28 info->register_spacing, info->register_length)); 29 break; 30 case IPMI_MEMSPACE_MEM32: 31 aml_append(crs, 32 aml_dword_memory(AML_POS_DECODE, 33 AML_MIN_FIXED, AML_MAX_FIXED, 34 AML_NON_CACHEABLE, AML_READ_WRITE, 35 0xffffffff, 36 info->base_address, 37 info->base_address + info->register_length - 1, 38 info->register_spacing, info->register_length)); 39 break; 40 case IPMI_MEMSPACE_MEM64: 41 aml_append(crs, 42 aml_qword_memory(AML_POS_DECODE, 43 AML_MIN_FIXED, AML_MAX_FIXED, 44 AML_NON_CACHEABLE, AML_READ_WRITE, 45 0xffffffffffffffffULL, 46 info->base_address, 47 info->base_address + info->register_length - 1, 48 info->register_spacing, info->register_length)); 49 break; 50 case IPMI_MEMSPACE_SMBUS: 51 aml_append(crs, aml_i2c_serial_bus_device(info->base_address, 52 "^")); 53 break; 54 default: 55 abort(); 56 } 57 58 if (info->interrupt_number) { 59 aml_append(crs, aml_irq_no_flags(info->interrupt_number)); 60 } 61 62 return crs; 63 } 64 65 void build_ipmi_dev_aml(AcpiDevAmlIf *adev, Aml *scope) 66 { 67 Aml *dev; 68 IPMIFwInfo info = {}; 69 IPMIInterface *ii = IPMI_INTERFACE(adev); 70 IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 71 uint16_t version; 72 73 iic->get_fwinfo(ii, &info); 74 assert(info.ipmi_spec_minor_revision <= 15); 75 version = ((info.ipmi_spec_major_revision << 8) 76 | (info.ipmi_spec_minor_revision << 4)); 77 78 dev = aml_device("MI%d", info.uuid); 79 aml_append(dev, aml_name_decl("_HID", aml_eisaid("IPI0001"))); 80 aml_append(dev, aml_name_decl("_STR", aml_string("ipmi_%s", 81 info.interface_name))); 82 aml_append(dev, aml_name_decl("_UID", aml_int(info.uuid))); 83 aml_append(dev, aml_name_decl("_CRS", aml_ipmi_crs(&info))); 84 aml_append(dev, aml_name_decl("_IFT", aml_int(info.interface_type))); 85 aml_append(dev, aml_name_decl("_SRV", aml_int(version))); 86 87 aml_append(scope, dev); 88 } 89