267 lines
9 KiB
C
267 lines
9 KiB
C
/*
|
||
* 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 2.1 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 "qemu/units.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);
|
||
}
|
||
|
||
/*
|
||
* ACPI 6.3: 5.2.27.4 System Locality Latency and Bandwidth Information
|
||
* Structure: Table 5-146
|
||
*/
|
||
static void build_hmat_lb(GArray *table_data, HMAT_LB_Info *hmat_lb,
|
||
uint32_t num_initiator, uint32_t num_target,
|
||
uint32_t *initiator_list)
|
||
{
|
||
int i, index;
|
||
HMAT_LB_Data *lb_data;
|
||
uint16_t *entry_list;
|
||
uint32_t base;
|
||
/* Length in bytes for entire structure */
|
||
uint32_t lb_length
|
||
= 32 /* Table length upto and including Entry Base Unit */
|
||
+ 4 * num_initiator /* Initiator Proximity Domain List */
|
||
+ 4 * num_target /* Target Proximity Domain List */
|
||
+ 2 * num_initiator * num_target; /* Latency or Bandwidth Entries */
|
||
|
||
/* Type */
|
||
build_append_int_noprefix(table_data, 1, 2);
|
||
/* Reserved */
|
||
build_append_int_noprefix(table_data, 0, 2);
|
||
/* Length */
|
||
build_append_int_noprefix(table_data, lb_length, 4);
|
||
/* Flags: Bits [3:0] Memory Hierarchy, Bits[7:4] Reserved */
|
||
assert(!(hmat_lb->hierarchy >> 4));
|
||
build_append_int_noprefix(table_data, hmat_lb->hierarchy, 1);
|
||
/* Data Type */
|
||
build_append_int_noprefix(table_data, hmat_lb->data_type, 1);
|
||
/* Reserved */
|
||
build_append_int_noprefix(table_data, 0, 2);
|
||
/* Number of Initiator Proximity Domains (s) */
|
||
build_append_int_noprefix(table_data, num_initiator, 4);
|
||
/* Number of Target Proximity Domains (t) */
|
||
build_append_int_noprefix(table_data, num_target, 4);
|
||
/* Reserved */
|
||
build_append_int_noprefix(table_data, 0, 4);
|
||
|
||
/* Entry Base Unit */
|
||
if (hmat_lb->data_type <= HMAT_LB_DATA_WRITE_LATENCY) {
|
||
/* Convert latency base from nanoseconds to picosecond */
|
||
base = hmat_lb->base * 1000;
|
||
} else {
|
||
/* Convert bandwidth base from Byte to Megabyte */
|
||
base = hmat_lb->base / MiB;
|
||
}
|
||
build_append_int_noprefix(table_data, base, 8);
|
||
|
||
/* Initiator Proximity Domain List */
|
||
for (i = 0; i < num_initiator; i++) {
|
||
build_append_int_noprefix(table_data, initiator_list[i], 4);
|
||
}
|
||
|
||
/* Target Proximity Domain List */
|
||
for (i = 0; i < num_target; i++) {
|
||
build_append_int_noprefix(table_data, i, 4);
|
||
}
|
||
|
||
/* Latency or Bandwidth Entries */
|
||
entry_list = g_new0(uint16_t, num_initiator * num_target);
|
||
for (i = 0; i < hmat_lb->list->len; i++) {
|
||
lb_data = &g_array_index(hmat_lb->list, HMAT_LB_Data, i);
|
||
index = lb_data->initiator * num_target + lb_data->target;
|
||
|
||
entry_list[index] = (uint16_t)(lb_data->data / hmat_lb->base);
|
||
}
|
||
|
||
for (i = 0; i < num_initiator * num_target; i++) {
|
||
build_append_int_noprefix(table_data, entry_list[i], 2);
|
||
}
|
||
|
||
g_free(entry_list);
|
||
}
|
||
|
||
/* ACPI 6.3: 5.2.27.5 Memory Side Cache Information Structure: Table 5-147 */
|
||
static void build_hmat_cache(GArray *table_data, uint8_t total_levels,
|
||
NumaHmatCacheOptions *hmat_cache)
|
||
{
|
||
/*
|
||
* Cache Attributes: Bits [3:0] – Total Cache Levels
|
||
* for this Memory Proximity Domain
|
||
*/
|
||
uint32_t cache_attr = total_levels;
|
||
|
||
/* Bits [7:4] : Cache Level described in this structure */
|
||
cache_attr |= (uint32_t) hmat_cache->level << 4;
|
||
|
||
/* Bits [11:8] - Cache Associativity */
|
||
cache_attr |= (uint32_t) hmat_cache->associativity << 8;
|
||
|
||
/* Bits [15:12] - Write Policy */
|
||
cache_attr |= (uint32_t) hmat_cache->policy << 12;
|
||
|
||
/* Bits [31:16] - Cache Line size in bytes */
|
||
cache_attr |= (uint32_t) hmat_cache->line << 16;
|
||
|
||
/* Type */
|
||
build_append_int_noprefix(table_data, 2, 2);
|
||
/* Reserved */
|
||
build_append_int_noprefix(table_data, 0, 2);
|
||
/* Length */
|
||
build_append_int_noprefix(table_data, 32, 4);
|
||
/* Proximity Domain for the Memory */
|
||
build_append_int_noprefix(table_data, hmat_cache->node_id, 4);
|
||
/* Reserved */
|
||
build_append_int_noprefix(table_data, 0, 4);
|
||
/* Memory Side Cache Size */
|
||
build_append_int_noprefix(table_data, hmat_cache->size, 8);
|
||
/* Cache Attributes */
|
||
build_append_int_noprefix(table_data, cache_attr, 4);
|
||
/* Reserved */
|
||
build_append_int_noprefix(table_data, 0, 2);
|
||
/*
|
||
* Number of SMBIOS handles (n)
|
||
* Linux kernel uses Memory Side Cache Information Structure
|
||
* without SMBIOS entries for now, so set Number of SMBIOS handles
|
||
* as 0.
|
||
*/
|
||
build_append_int_noprefix(table_data, 0, 2);
|
||
}
|
||
|
||
/* Build HMAT sub table structures */
|
||
static void hmat_build_table_structs(GArray *table_data, NumaState *numa_state)
|
||
{
|
||
uint16_t flags;
|
||
uint32_t num_initiator = 0;
|
||
uint32_t initiator_list[MAX_NODES];
|
||
int i, hierarchy, type, cache_level, total_levels;
|
||
HMAT_LB_Info *hmat_lb;
|
||
NumaHmatCacheOptions *hmat_cache;
|
||
|
||
build_append_int_noprefix(table_data, 0, 4); /* Reserved */
|
||
|
||
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);
|
||
}
|
||
|
||
for (i = 0; i < numa_state->num_nodes; i++) {
|
||
if (numa_state->nodes[i].has_cpu) {
|
||
initiator_list[num_initiator++] = i;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* ACPI 6.3: 5.2.27.4 System Locality Latency and Bandwidth Information
|
||
* Structure: Table 5-146
|
||
*/
|
||
for (hierarchy = HMAT_LB_MEM_MEMORY;
|
||
hierarchy <= HMAT_LB_MEM_CACHE_3RD_LEVEL; hierarchy++) {
|
||
for (type = HMAT_LB_DATA_ACCESS_LATENCY;
|
||
type <= HMAT_LB_DATA_WRITE_BANDWIDTH; type++) {
|
||
hmat_lb = numa_state->hmat_lb[hierarchy][type];
|
||
|
||
if (hmat_lb && hmat_lb->list->len) {
|
||
build_hmat_lb(table_data, hmat_lb, num_initiator,
|
||
numa_state->num_nodes, initiator_list);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* ACPI 6.3: 5.2.27.5 Memory Side Cache Information Structure:
|
||
* Table 5-147
|
||
*/
|
||
for (i = 0; i < numa_state->num_nodes; i++) {
|
||
total_levels = 0;
|
||
for (cache_level = 1; cache_level < HMAT_LB_LEVELS; cache_level++) {
|
||
if (numa_state->hmat_cache[i][cache_level]) {
|
||
total_levels++;
|
||
}
|
||
}
|
||
for (cache_level = 0; cache_level <= total_levels; cache_level++) {
|
||
hmat_cache = numa_state->hmat_cache[i][cache_level];
|
||
if (hmat_cache) {
|
||
build_hmat_cache(table_data, total_levels, hmat_cache);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState *numa_state,
|
||
const char *oem_id, const char *oem_table_id)
|
||
{
|
||
AcpiTable table = { .sig = "HMAT", .rev = 2,
|
||
.oem_id = oem_id, .oem_table_id = oem_table_id };
|
||
|
||
acpi_table_begin(&table, table_data);
|
||
hmat_build_table_structs(table_data, numa_state);
|
||
acpi_table_end(linker, &table);
|
||
}
|