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/*
* HMAT ACPI Implementation
*
* Copyright(C) 2019 Intel Corporation.
*
* Author:
* Liu jingqi <jingqi.liu@linux.intel.com>
* Tao Xu <tao3.xu@intel.com>
*
* HMAT is defined in ACPI 6.3: 5.2.27 Heterogeneous Memory Attribute Table
* (HMAT)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>
*/
#include "qemu/osdep.h"
#include "sysemu/numa.h"
#include "hw/acpi/hmat.h"
/*
* ACPI 6.3:
* 5.2.27.3 Memory Proximity Domain Attributes Structure: Table 5-145
*/
static void build_hmat_mpda(GArray *table_data, uint16_t flags,
uint32_t initiator, uint32_t mem_node)
{
/* Memory Proximity Domain Attributes Structure */
/* Type */
build_append_int_noprefix(table_data, 0, 2);
/* Reserved */
build_append_int_noprefix(table_data, 0, 2);
/* Length */
build_append_int_noprefix(table_data, 40, 4);
/* Flags */
build_append_int_noprefix(table_data, flags, 2);
/* Reserved */
build_append_int_noprefix(table_data, 0, 2);
/* Proximity Domain for the Attached Initiator */
build_append_int_noprefix(table_data, initiator, 4);
/* Proximity Domain for the Memory */
build_append_int_noprefix(table_data, mem_node, 4);
/* Reserved */
build_append_int_noprefix(table_data, 0, 4);
/*
* Reserved:
* Previously defined as the Start Address of the System Physical
* Address Range. Deprecated since ACPI Spec 6.3.
*/
build_append_int_noprefix(table_data, 0, 8);
/*
* Reserved:
* Previously defined as the Range Length of the region in bytes.
* Deprecated since ACPI Spec 6.3.
*/
build_append_int_noprefix(table_data, 0, 8);
}
/* Build HMAT sub table structures */
static void hmat_build_table_structs(GArray *table_data, NumaState *numa_state)
{
uint16_t flags;
int i;
for (i = 0; i < numa_state->num_nodes; i++) {
flags = 0;
if (numa_state->nodes[i].initiator < MAX_NODES) {
flags |= HMAT_PROXIMITY_INITIATOR_VALID;
}
build_hmat_mpda(table_data, flags, numa_state->nodes[i].initiator, i);
}
}
void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState *numa_state)
{
int hmat_start = table_data->len;
/* reserve space for HMAT header */
acpi_data_push(table_data, 40);
hmat_build_table_structs(table_data, numa_state);
build_header(linker, table_data,
(void *)(table_data->data + hmat_start),
"HMAT", table_data->len - hmat_start, 2, NULL, NULL);
}
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