diff options
| -rw-r--r-- | hw/acpi/hmat.c | 104 |
1 files changed, 103 insertions, 1 deletions
diff --git a/hw/acpi/hmat.c b/hw/acpi/hmat.c index 9ff79308a4..4635d45dee 100644 --- a/hw/acpi/hmat.c +++ b/hw/acpi/hmat.c @@ -25,6 +25,7 @@ */ #include "qemu/osdep.h" +#include "qemu/units.h" #include "sysemu/numa.h" #include "hw/acpi/hmat.h" @@ -67,11 +68,89 @@ static void build_hmat_mpda(GArray *table_data, uint16_t flags, 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_malloc0(num_initiator * num_target * sizeof(uint16_t)); + 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); +} + /* Build HMAT sub table structures */ static void hmat_build_table_structs(GArray *table_data, NumaState *numa_state) { uint16_t flags; - int i; + uint32_t num_initiator = 0; + uint32_t initiator_list[MAX_NODES]; + int i, hierarchy, type; + HMAT_LB_Info *hmat_lb; for (i = 0; i < numa_state->num_nodes; i++) { flags = 0; @@ -82,6 +161,29 @@ static void hmat_build_table_structs(GArray *table_data, NumaState *numa_state) 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); + } + } + } } void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState *numa_state) |