hw/acpi/hmat.c - third_party/qemu - Git at Google

 /*
  * 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);
 }
	/*
	* 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);
	}