[src/trunk]: src/sys/arch/mips/include Document the PerfCntCrl registers (CP0...

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

details:   https://anonhg.NetBSD.org/src/rev/53cb6818015e
branches:  trunk
changeset: 936745:53cb6818015e
user:      simonb <simonb%NetBSD.org@localhost>
date:      Sun Aug 02 23:20:25 2020 +0000

description:
Document the PerfCntCrl registers (CP0 Register 25, Selects 0, 2, 4, 6).

diffstat:

 sys/arch/mips/include/mipsNN.h |  44 +++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 43 insertions(+), 1 deletions(-)

diffs (58 lines):

diff -r 82e626dfa52d -r 53cb6818015e sys/arch/mips/include/mipsNN.h
--- a/sys/arch/mips/include/mipsNN.h    Sun Aug 02 23:04:23 2020 +0000
+++ b/sys/arch/mips/include/mipsNN.h    Sun Aug 02 23:20:25 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mipsNN.h,v 1.11 2020/07/31 03:35:05 simonb Exp $       */
+/*     $NetBSD: mipsNN.h,v 1.12 2020/08/02 23:20:25 simonb Exp $       */
 
 /*
  * Copyright 2000, 2001
@@ -473,6 +473,48 @@
 
 
 /*
+ * Values in PerfCntCrl Register (CP0 Register 25, Selects 0, 2, 4, 6)
+ */
+
+/* "M" (R): next PerCntCtl register present. */
+#define        MIPSNN_PERFCTL_M                                __BIT(31)
+
+/* "W" (R): Width - is a 64-bit counter. */
+#define        MIPSNN_PERFCTL_W                                __BIT(30)
+
+/* "Impl" (RAZ): Impl - implementation dependent field. */
+#define        MIPSNN_PERFCTL_IMPL                             __BITS(29,25)
+
+/* "EC" (Z): Reserved for Virtualisation Mode. */
+#define        MIPSNN_PERFCTL_EC                               __BITS(24,23)
+
+/* "PCTD" (RW): Performance Counter Trace Disable. */
+#define        MIPSNN_PERFCTL_PCTD                             __BIT(15)
+
+/*
+ * "EVENT" (RW): Event number.  Note: The MIPS32/MIPS64 PRA specs define
+ * EventExt from 14:11 and Event from 10:5.  For ease of use, we define a
+ * single 10 bit Event field.
+ */
+#define        MIPSNN_PERFCTL_EVENT                            __BITS(14,5)
+
+/* "IE" (RW): Interrupt Enable. */
+#define        MIPSNN_PERFCTL_IE                               __BIT(4)
+
+/* "U" (RW): Enables event counting in user mode. */
+#define        MIPSNN_PERFCTL_U                                __BIT(3)
+
+/* "S" (RW): Enables event counting in supervisor mode. */
+#define        MIPSNN_PERFCTL_S                                __BIT(2)
+
+/* "K" (RW): Enables event counting in kernel mode. */
+#define        MIPSNN_PERFCTL_K                                __BIT(1)
+
+/* "EXL" (RW): Enables event counting when EXL bit in Status is one. */
+#define        MIPSNN_PERFCTL_EXL                              __BIT(0)
+
+
+/*
  * Values in Configuration Register 6 (CP0 Register 16, Select 6)
  * for RMI XLP processors
  */