[Qemu-devel] [RFC 2 PATCH 02/16] hw/i386: Rename X86CPUTopoInfo structure to X86CPUTopoIDs

["Moger, Babu" <Babu.Moger@amd.com>]

Rename few data structures related to X86 topology.
X86CPUTopoIDs will have individual arch ids. Next
patch introduces X86CPUTopoInfo which will have all
topology information(like cores, threads etc..).

Adds node_id and ccx_id. This will be required to support
new epyc mode mode. There is no functional change.

Signed-off-by: Babu Moger <babu.moger@amd.com>
---
 hw/i386/pc.c               |   60 ++++++++++++++++++++++----------------------
 include/hw/i386/topology.h |   42 ++++++++++++++++---------------
 2 files changed, 52 insertions(+), 50 deletions(-)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 549c437050..ada445f8f3 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -2379,7 +2379,7 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
     int idx;
     CPUState *cs;
     CPUArchId *cpu_slot;
-    X86CPUTopoInfo topo;
+    X86CPUTopoIDs topo_ids;
     X86CPU *cpu = X86_CPU(dev);
     CPUX86State *env = &cpu->env;
     MachineState *ms = MACHINE(hotplug_dev);
@@ -2432,12 +2432,12 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
             return;
         }
 
-        topo.pkg_id = cpu->socket_id;
-        topo.die_id = cpu->die_id;
-        topo.core_id = cpu->core_id;
-        topo.smt_id = cpu->thread_id;
+        topo_ids.pkg_id = cpu->socket_id;
+        topo_ids.die_id = cpu->die_id;
+        topo_ids.core_id = cpu->core_id;
+        topo_ids.smt_id = cpu->thread_id;
         cpu->apic_id = apicid_from_topo_ids(pcms->smp_dies, smp_cores,
-                                            smp_threads, &topo);
+                                            smp_threads, &topo_ids);
     }
 
     cpu_slot = pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, &idx);
@@ -2445,11 +2445,11 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
         MachineState *ms = MACHINE(pcms);
 
         x86_topo_ids_from_apicid(cpu->apic_id, pcms->smp_dies,
-                                 smp_cores, smp_threads, &topo);
+                                 smp_cores, smp_threads, &topo_ids);
         error_setg(errp,
             "Invalid CPU [socket: %u, die: %u, core: %u, thread: %u] with"
             " APIC ID %" PRIu32 ", valid index range 0:%d",
-            topo.pkg_id, topo.die_id, topo.core_id, topo.smt_id,
+            topo_ids.pkg_id, topo_ids.die_id, topo_ids.core_id, topo_ids.smt_id,
             cpu->apic_id, ms->possible_cpus->len - 1);
         return;
     }
@@ -2467,34 +2467,34 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
      * once -smp refactoring is complete and there will be CPU private
      * CPUState::nr_cores and CPUState::nr_threads fields instead of globals */
     x86_topo_ids_from_apicid(cpu->apic_id, pcms->smp_dies,
-                             smp_cores, smp_threads, &topo);
-    if (cpu->socket_id != -1 && cpu->socket_id != topo.pkg_id) {
+                             smp_cores, smp_threads, &topo_ids);
+    if (cpu->socket_id != -1 && cpu->socket_id != topo_ids.pkg_id) {
         error_setg(errp, "property socket-id: %u doesn't match set apic-id:"
-            " 0x%x (socket-id: %u)", cpu->socket_id, cpu->apic_id, topo.pkg_id);
+            " 0x%x (socket-id: %u)", cpu->socket_id, cpu->apic_id, topo_ids.pkg_id);
         return;
     }
-    cpu->socket_id = topo.pkg_id;
+    cpu->socket_id = topo_ids.pkg_id;
 
-    if (cpu->die_id != -1 && cpu->die_id != topo.die_id) {
+    if (cpu->die_id != -1 && cpu->die_id != topo_ids.die_id) {
         error_setg(errp, "property die-id: %u doesn't match set apic-id:"
-            " 0x%x (die-id: %u)", cpu->die_id, cpu->apic_id, topo.die_id);
+            " 0x%x (die-id: %u)", cpu->die_id, cpu->apic_id, topo_ids.die_id);
         return;
     }
-    cpu->die_id = topo.die_id;
+    cpu->die_id = topo_ids.die_id;
 
-    if (cpu->core_id != -1 && cpu->core_id != topo.core_id) {
+    if (cpu->core_id != -1 && cpu->core_id != topo_ids.core_id) {
         error_setg(errp, "property core-id: %u doesn't match set apic-id:"
-            " 0x%x (core-id: %u)", cpu->core_id, cpu->apic_id, topo.core_id);
+            " 0x%x (core-id: %u)", cpu->core_id, cpu->apic_id, topo_ids.core_id);
         return;
     }
-    cpu->core_id = topo.core_id;
+    cpu->core_id = topo_ids.core_id;
 
-    if (cpu->thread_id != -1 && cpu->thread_id != topo.smt_id) {
+    if (cpu->thread_id != -1 && cpu->thread_id != topo_ids.smt_id) {
         error_setg(errp, "property thread-id: %u doesn't match set apic-id:"
-            " 0x%x (thread-id: %u)", cpu->thread_id, cpu->apic_id, topo.smt_id);
+            " 0x%x (thread-id: %u)", cpu->thread_id, cpu->apic_id, topo_ids.smt_id);
         return;
     }
-    cpu->thread_id = topo.smt_id;
+    cpu->thread_id = topo_ids.smt_id;
 
     if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX) &&
         !kvm_hv_vpindex_settable()) {
@@ -2840,14 +2840,14 @@ pc_cpu_index_to_props(MachineState *ms, unsigned cpu_index)
 
 static int64_t pc_get_default_cpu_node_id(const MachineState *ms, int idx)
 {
-   X86CPUTopoInfo topo;
+   X86CPUTopoIDs topo_ids;
    PCMachineState *pcms = PC_MACHINE(ms);
 
    assert(idx < ms->possible_cpus->len);
    x86_topo_ids_from_apicid(ms->possible_cpus->cpus[idx].arch_id,
                             pcms->smp_dies, ms->smp.cores,
-                            ms->smp.threads, &topo);
-   return topo.pkg_id % nb_numa_nodes;
+                            ms->smp.threads, &topo_ids);
+   return topo_ids.pkg_id % nb_numa_nodes;
 }
 
 static const CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *ms)
@@ -2869,22 +2869,22 @@ static const CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *ms)
                                   sizeof(CPUArchId) * max_cpus);
     ms->possible_cpus->len = max_cpus;
     for (i = 0; i < ms->possible_cpus->len; i++) {
-        X86CPUTopoInfo topo;
+        X86CPUTopoIDs topo_ids;
 
         ms->possible_cpus->cpus[i].type = ms->cpu_type;
         ms->possible_cpus->cpus[i].vcpus_count = 1;
         ms->possible_cpus->cpus[i].arch_id = x86_cpu_apic_id_from_index(pcms, i);
         x86_topo_ids_from_apicid(ms->possible_cpus->cpus[i].arch_id,
                                  pcms->smp_dies, ms->smp.cores,
-                                 ms->smp.threads, &topo);
+                                 ms->smp.threads, &topo_ids);
         ms->possible_cpus->cpus[i].props.has_socket_id = true;
-        ms->possible_cpus->cpus[i].props.socket_id = topo.pkg_id;
+        ms->possible_cpus->cpus[i].props.socket_id = topo_ids.pkg_id;
         ms->possible_cpus->cpus[i].props.has_die_id = true;
-        ms->possible_cpus->cpus[i].props.die_id = topo.die_id;
+        ms->possible_cpus->cpus[i].props.die_id = topo_ids.die_id;
         ms->possible_cpus->cpus[i].props.has_core_id = true;
-        ms->possible_cpus->cpus[i].props.core_id = topo.core_id;
+        ms->possible_cpus->cpus[i].props.core_id = topo_ids.core_id;
         ms->possible_cpus->cpus[i].props.has_thread_id = true;
-        ms->possible_cpus->cpus[i].props.thread_id = topo.smt_id;
+        ms->possible_cpus->cpus[i].props.thread_id = topo_ids.smt_id;
     }
     return ms->possible_cpus;
 }
diff --git a/include/hw/i386/topology.h b/include/hw/i386/topology.h
index 4ff5b2da6c..0637743cdf 100644
--- a/include/hw/i386/topology.h
+++ b/include/hw/i386/topology.h
@@ -45,12 +45,14 @@
  */
 typedef uint32_t apic_id_t;
 
-typedef struct X86CPUTopoInfo {
+typedef struct X86CPUTopoIDs {
     unsigned pkg_id;
     unsigned die_id;
     unsigned core_id;
     unsigned smt_id;
-} X86CPUTopoInfo;
+    unsigned node_id;
+    unsigned ccx_id;
+} X86CPUTopoIDs;
 
 /* Return the bit width needed for 'count' IDs
  */
@@ -122,12 +124,12 @@ static inline unsigned apicid_pkg_offset(unsigned nr_dies,
 static inline apic_id_t apicid_from_topo_ids(unsigned nr_dies,
                                              unsigned nr_cores,
                                              unsigned nr_threads,
-                                             const X86CPUTopoInfo *topo)
+                                             const X86CPUTopoIDs *topo_ids)
 {
-    return (topo->pkg_id  << apicid_pkg_offset(nr_dies, nr_cores, nr_threads)) |
-           (topo->die_id  << apicid_die_offset(nr_dies, nr_cores, nr_threads)) |
-          (topo->core_id << apicid_core_offset(nr_dies, nr_cores, nr_threads)) |
-           topo->smt_id;
+    return (topo_ids->pkg_id  << apicid_pkg_offset(nr_dies, nr_cores, nr_threads)) |
+           (topo_ids->die_id  << apicid_die_offset(nr_dies, nr_cores, nr_threads)) |
+           (topo_ids->core_id << apicid_core_offset(nr_dies, nr_cores, nr_threads)) |
+           topo_ids->smt_id;
 }
 
 /* Calculate thread/core/package IDs for a specific topology,
@@ -137,12 +139,12 @@ static inline void x86_topo_ids_from_idx(unsigned nr_dies,
                                          unsigned nr_cores,
                                          unsigned nr_threads,
                                          unsigned cpu_index,
-                                         X86CPUTopoInfo *topo)
+                                         X86CPUTopoIDs *topo_ids)
 {
-    topo->pkg_id = cpu_index / (nr_dies * nr_cores * nr_threads);
-    topo->die_id = cpu_index / (nr_cores * nr_threads) % nr_dies;
-    topo->core_id = cpu_index / nr_threads % nr_cores;
-    topo->smt_id = cpu_index % nr_threads;
+    topo_ids->pkg_id = cpu_index / (nr_dies * nr_cores * nr_threads);
+    topo_ids->die_id = cpu_index / (nr_cores * nr_threads) % nr_dies;
+    topo_ids->core_id = cpu_index / nr_threads % nr_cores;
+    topo_ids->smt_id = cpu_index % nr_threads;
 }
 
 /* Calculate thread/core/package IDs for a specific topology,
@@ -152,17 +154,17 @@ static inline void x86_topo_ids_from_apicid(apic_id_t apicid,
                                             unsigned nr_dies,
                                             unsigned nr_cores,
                                             unsigned nr_threads,
-                                            X86CPUTopoInfo *topo)
+                                            X86CPUTopoIDs *topo_ids)
 {
-    topo->smt_id = apicid &
+    topo_ids->smt_id = apicid &
             ~(0xFFFFFFFFUL << apicid_smt_width(nr_dies, nr_cores, nr_threads));
-    topo->core_id =
+    topo_ids->core_id =
             (apicid >> apicid_core_offset(nr_dies, nr_cores, nr_threads)) &
             ~(0xFFFFFFFFUL << apicid_core_width(nr_dies, nr_cores, nr_threads));
-    topo->die_id =
+    topo_ids->die_id =
             (apicid >> apicid_die_offset(nr_dies, nr_cores, nr_threads)) &
             ~(0xFFFFFFFFUL << apicid_die_width(nr_dies, nr_cores, nr_threads));
-    topo->pkg_id = apicid >> apicid_pkg_offset(nr_dies, nr_cores, nr_threads);
+    topo_ids->pkg_id = apicid >> apicid_pkg_offset(nr_dies, nr_cores, nr_threads);
 }
 
 /* Make APIC ID for the CPU 'cpu_index'
@@ -174,9 +176,9 @@ static inline apic_id_t x86_apicid_from_cpu_idx(unsigned nr_dies,
                                                 unsigned nr_threads,
                                                 unsigned cpu_index)
 {
-    X86CPUTopoInfo topo;
-    x86_topo_ids_from_idx(nr_dies, nr_cores, nr_threads, cpu_index, &topo);
-    return apicid_from_topo_ids(nr_dies, nr_cores, nr_threads, &topo);
+    X86CPUTopoIDs topo_ids;
+    x86_topo_ids_from_idx(nr_dies, nr_cores, nr_threads, cpu_index, &topo_ids);
+    return apicid_from_topo_ids(nr_dies, nr_cores, nr_threads, &topo_ids);
 }
 
 #endif /* HW_I386_TOPOLOGY_H */