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