sh, landisk: switch to clockintr(9)

[Scott Cheloha]

This patch switches landisk to clockintr(9).

We have no direct control over the interrupt clock on these machines
so the patch is relatively simple.

miod@ has been testing it.  He reports it has survived a release build
and an upgrade from the resulting bsd.rd.

It could use additional testing, though I don't know how many landisk
machines there are out there.

Index: sys/arch/sh/include/cpu.h
===================================================================
RCS file: /cvs/src/sys/arch/sh/include/cpu.h,v
retrieving revision 1.33
diff -u -p -r1.33 cpu.h
--- sys/arch/sh/include/cpu.h   21 Feb 2022 10:44:58 -0000      1.33
+++ sys/arch/sh/include/cpu.h   6 Nov 2022 11:38:06 -0000
@@ -55,6 +55,7 @@
  */
 
 #include <machine/intr.h>
+#include <sys/clockintr.h>
 #include <sys/sched.h>
 
 struct cpu_info {
@@ -70,6 +71,8 @@ struct cpu_info {
 #endif
 
        int     ci_want_resched;
+
+       struct clockintr_queue ci_queue;
 
        char    ci_panicbuf[512];
 };
Index: sys/arch/sh/include/_types.h
===================================================================
RCS file: /cvs/src/sys/arch/sh/include/_types.h,v
retrieving revision 1.20
diff -u -p -r1.20 _types.h
--- sys/arch/sh/include/_types.h        5 Mar 2018 01:15:25 -0000       1.20
+++ sys/arch/sh/include/_types.h        6 Nov 2022 11:38:06 -0000
@@ -35,6 +35,8 @@
 #ifndef _SH__TYPES_H_
 #define _SH__TYPES_H_
 
+#define        __HAVE_CLOCKINTR
+
 #if defined(_KERNEL)
 typedef struct label_t {
        long val[9];
Index: sys/arch/sh/sh/clock.c
===================================================================
RCS file: /cvs/src/sys/arch/sh/sh/clock.c,v
retrieving revision 1.11
diff -u -p -r1.11 clock.c
--- sys/arch/sh/sh/clock.c      20 Oct 2020 15:59:17 -0000      1.11
+++ sys/arch/sh/sh/clock.c      6 Nov 2022 11:38:06 -0000
@@ -33,6 +33,7 @@
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
+#include <sys/clockintr.h>
 #include <sys/device.h>
 #include <sys/timetc.h>
 
@@ -205,7 +206,7 @@ sh_clock_get_pclock(void)
 void
 setstatclockrate(int newhz)
 {
-       /* XXX not yet */
+       clockintr_setstatclockrate(newhz);
 }
 
 u_int
@@ -261,6 +262,12 @@ cpu_initclocks(void)
        tick = 1000000 / hz;
        tick_nsec = 1000000000 / hz;
 
+       stathz = hz;
+       profhz = stathz;
+       clockintr_init(0);
+
+       clockintr_cpu_init(NULL);
+
        /*
         * Use TMU channel 0 as hard clock
         */
@@ -332,7 +339,7 @@ sh3_clock_intr(void *arg) /* trap frame 
        /* clear underflow status */
        _reg_bclr_2(SH3_TCR0, TCR_UNF);
 
-       hardclock(arg);
+       clockintr_dispatch(arg);
 
        return (1);
 }
@@ -353,7 +360,7 @@ sh4_clock_intr(void *arg) /* trap frame 
        /* clear underflow status */
        _reg_bclr_2(SH4_TCR0, TCR_UNF);
 
-       hardclock(arg);
+       clockintr_dispatch(arg);
 
        return (1);
 }