[src/trunk]: src/sys/arch/mips/mips Add 'mach cpuinfo' support

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a7769a45dfc0
branches:  trunk
changeset: 359641:a7769a45dfc0
user:      skrll <skrll%NetBSD.org@localhost>
date:      Sat Jan 15 10:32:32 2022 +0000

description:
Add 'mach cpuinfo' support

diffstat:

 sys/arch/mips/mips/db_interface.c |  70 +++++++++++++++++++++++++++++++++++++-
 1 files changed, 68 insertions(+), 2 deletions(-)

diffs (107 lines):

diff -r dd8186bd5388 -r a7769a45dfc0 sys/arch/mips/mips/db_interface.c
--- a/sys/arch/mips/mips/db_interface.c Sat Jan 15 10:09:15 2022 +0000
+++ b/sys/arch/mips/mips/db_interface.c Sat Jan 15 10:32:32 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: db_interface.c,v 1.95 2022/01/15 08:56:41 skrll Exp $  */
+/*     $NetBSD: db_interface.c,v 1.96 2022/01/15 10:32:32 skrll Exp $  */
 
 /*
  * Mach Operating System
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: db_interface.c,v 1.95 2022/01/15 08:56:41 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: db_interface.c,v 1.96 2022/01/15 10:32:32 skrll Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_multiprocessor.h"
@@ -88,8 +88,10 @@
 #endif
 
 void db_cp0dump_cmd(db_expr_t, bool, db_expr_t, const char *);
+void db_cpuinfo_cmd(db_expr_t, bool, db_expr_t, const char *);
 void db_kvtophys_cmd(db_expr_t, bool, db_expr_t, const char *);
 void db_tlbdump_cmd(db_expr_t, bool, db_expr_t, const char *);
+
 #ifdef MIPS64_XLS
 void db_mfcr_cmd(db_expr_t, bool, db_expr_t, const char *);
 void db_mtcr_cmd(db_expr_t, bool, db_expr_t, const char *);
@@ -570,6 +572,66 @@
        }
 }
 
+
+static void
+show_cpuinfo(struct cpu_info *kci)
+{
+       struct cpu_info cpuinfobuf;
+       cpuid_t cpuid;
+       int i;
+
+       db_read_bytes((db_addr_t)kci, sizeof(cpuinfobuf), (char *)&cpuinfobuf);
+
+       struct cpu_info *ci = &cpuinfobuf;
+       cpuid = ci->ci_cpuid;
+       db_printf("cpu_info=%p, cpu_name=%s\n", kci, ci->ci_cpuname);
+       db_printf("%p cpu[%lu].ci_cpuid         = %lu\n",
+           &ci->ci_cpuid, cpuid, ci->ci_cpuid);
+       db_printf("%p cpu[%lu].ci_curlwp        = %p\n",
+           &ci->ci_curlwp, cpuid, ci->ci_curlwp);
+       for (i = 0; i < SOFTINT_COUNT; i++) {
+               db_printf("%p cpu[%lu].ci_softlwps[%d]   = %p\n",
+                   &ci->ci_softlwps[i], cpuid, i, ci->ci_softlwps[i]);
+       }
+       db_printf("%p cpu[%lu].ci_want_resched  = %d\n",
+           &ci->ci_want_resched, cpuid, ci->ci_want_resched);
+       db_printf("%p cpu[%lu].ci_cpl           = %d\n",
+           &ci->ci_cpl, cpuid, ci->ci_cpl);
+       db_printf("%p cpu[%lu].ci_softints      = 0x%08x\n",
+           &ci->ci_softints, cpuid, ci->ci_softints);
+       db_printf("%p cpu[%lu].ci_idepth        = %u\n",
+           &ci->ci_idepth, cpuid, ci->ci_idepth);
+}
+
+void
+db_cpuinfo_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
+    const char *modif)
+{
+#ifdef MULTIPROCESSOR
+       CPU_INFO_ITERATOR cii;
+       struct cpu_info *ci;
+       bool showall = false;
+
+       if (modif != NULL) {
+               for (; *modif != '\0'; modif++) {
+                       switch (*modif) {
+                       case 'a':
+                               showall = true;
+                               break;
+                       }
+               }
+       }
+
+       if (showall) {
+               for (CPU_INFO_FOREACH(cii, ci)) {
+                       show_cpuinfo(ci);
+               }
+       } else
+#endif /* MULTIPROCESSOR */
+               show_cpuinfo(curcpu());
+}
+
+
 #if (MIPS32 + MIPS32R2 + MIPS64 + MIPS64R2) > 0
 static void
 db_watch_cmd(db_expr_t address, bool have_addr, db_expr_t count,
@@ -827,6 +889,10 @@
        { DDB_ADD_CMD("cp0",    db_cp0dump_cmd, 0,
                "Dump CP0 registers.",
                NULL, NULL) },
+       { DDB_ADD_CMD("cpuinfo", db_cpuinfo_cmd,        0,
+                       "Displays the cpuinfo",
+                   NULL, NULL)
+       },
        { DDB_ADD_CMD("kvtop",  db_kvtophys_cmd,        0,
                "Print the physical address for a given kernel virtual address",
                "address",