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89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/*
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* IPMI ACPI firmware handling
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*
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* Copyright (c) 2015,2016 Corey Minyard, MontaVista Software, LLC
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "hw/ipmi/ipmi.h"
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#include "hw/acpi/aml-build.h"
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#include "hw/acpi/acpi.h"
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#include "hw/acpi/ipmi.h"
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static Aml *aml_ipmi_crs(IPMIFwInfo *info)
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{
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Aml *crs = aml_resource_template();
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/*
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* The base address is fixed and cannot change. That may be different
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* if someone does PCI, but we aren't there yet.
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*/
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switch (info->memspace) {
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case IPMI_MEMSPACE_IO:
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aml_append(crs, aml_io(AML_DECODE16, info->base_address,
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info->base_address + info->register_length - 1,
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info->register_spacing, info->register_length));
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break;
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case IPMI_MEMSPACE_MEM32:
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aml_append(crs,
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aml_dword_memory(AML_POS_DECODE,
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AML_MIN_FIXED, AML_MAX_FIXED,
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AML_NON_CACHEABLE, AML_READ_WRITE,
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0xffffffff,
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info->base_address,
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info->base_address + info->register_length - 1,
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info->register_spacing, info->register_length));
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break;
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case IPMI_MEMSPACE_MEM64:
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aml_append(crs,
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aml_qword_memory(AML_POS_DECODE,
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AML_MIN_FIXED, AML_MAX_FIXED,
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AML_NON_CACHEABLE, AML_READ_WRITE,
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0xffffffffffffffffULL,
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info->base_address,
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info->base_address + info->register_length - 1,
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info->register_spacing, info->register_length));
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break;
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case IPMI_MEMSPACE_SMBUS:
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aml_append(crs, aml_i2c_serial_bus_device(info->base_address,
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"^"));
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break;
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default:
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abort();
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}
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if (info->interrupt_number) {
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aml_append(crs, aml_irq_no_flags(info->interrupt_number));
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}
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return crs;
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}
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void build_ipmi_dev_aml(AcpiDevAmlIf *adev, Aml *scope)
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{
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Aml *dev;
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IPMIFwInfo info = {};
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IPMIInterface *ii = IPMI_INTERFACE(adev);
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IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
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uint16_t version;
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iic->get_fwinfo(ii, &info);
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assert(info.ipmi_spec_minor_revision <= 15);
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version = ((info.ipmi_spec_major_revision << 8)
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| (info.ipmi_spec_minor_revision << 4));
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dev = aml_device("MI%d", info.uuid);
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aml_append(dev, aml_name_decl("_HID", aml_eisaid("IPI0001")));
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aml_append(dev, aml_name_decl("_STR", aml_string("ipmi_%s",
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info.interface_name)));
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aml_append(dev, aml_name_decl("_UID", aml_int(info.uuid)));
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aml_append(dev, aml_name_decl("_CRS", aml_ipmi_crs(&info)));
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aml_append(dev, aml_name_decl("_IFT", aml_int(info.interface_type)));
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aml_append(dev, aml_name_decl("_SRV", aml_int(version)));
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aml_append(scope, dev);
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}
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