@@ -135,14 +135,63 @@ static void build_hmat_lb(GArray *table_data, HMAT_LB_Info *hmat_lb,
}
}
+/* ACPI 6.3: 5.2.27.5 Memory Side Cache Information Structure: Table 5-147 */
+static void build_hmat_cache(GArray *table_data, HMAT_Cache_Info *hmat_cache)
+{
+ /*
+ * Cache Attributes: Bits [3:0] – Total Cache Levels
+ * for this Memory Proximity Domain
+ */
+ uint32_t cache_attr = hmat_cache->total_levels & 0xF;
+
+ /* Bits [7:4] : Cache Level described in this structure */
+ cache_attr |= (hmat_cache->level & 0xF) << 4;
+
+ /* Bits [11:8] - Cache Associativity */
+ cache_attr |= (hmat_cache->associativity & 0x7) << 8;
+
+ /* Bits [15:12] - Write Policy */
+ cache_attr |= (hmat_cache->write_policy & 0x7) << 12;
+
+ /* Bits [31:16] - Cache Line size in bytes */
+ cache_attr |= (hmat_cache->line_size & 0xFFFF) << 16;
+
+ cache_attr = cpu_to_le32(cache_attr);
+
+ /* 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->proximity, 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;
+ int i, hierarchy, type, cache_level, total_levels;
HMAT_LB_Info *hmat_lb;
+ HMAT_Cache_Info *hmat_cache;
for (i = 0; i < numa_state->num_nodes; i++) {
flags = 0;
@@ -176,6 +225,27 @@ static void hmat_build_table_structs(GArray *table_data, NumaState *numa_state)
}
}
}
+
+ /*
+ * 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 <= MAX_HMAT_CACHE_LEVEL;
+ 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) {
+ hmat_cache->total_levels = total_levels;
+ build_hmat_cache(table_data, hmat_cache);
+ }
+ }
+ }
}
void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState *numa_state)