Spin up secondary CPUs and add IPI infrastructure. Heavily based on diffs

from dran@.

ok patrick@

2 files changed, 34 insertions, 5 deletions

diff --git a/sys/arch/arm64/include/cpu.h b/sys/arch/arm64/include/cpu.h
index 8329fc5097b..8c274035376 100644
--- a/sys/arch/arm64/include/cpu.h
+++ b/sys/arch/arm64/include/cpu.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: cpu.h,v 1.5 2018/01/17 10:22:25 kettenis Exp $ */
+/* $OpenBSD: cpu.h,v 1.6 2018/01/28 13:17:45 kettenis Exp $ */
 /*
  * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com>
  *
@@ -81,10 +81,14 @@ struct cpu_info {
 	struct cpu_info		*ci_next;
 	struct schedstate_percpu ci_schedstate; /* scheduler state */
 
+	u_int32_t		ci_cpuid;
+	uint64_t		ci_mpidr;
+	int			ci_node;
+	struct cpu_info		*ci_self;
+
 	struct proc		*ci_curproc;
 	struct pmap		*ci_curpm;
 	struct proc		*ci_fpuproc;
-	u_int32_t		 ci_cpuid;
 	u_int32_t		ci_randseed;
 
 	struct pcb		*ci_curpcb;
@@ -104,6 +108,9 @@ struct cpu_info {
 
 #ifdef MULTIPROCESSOR
 	struct srp_hazard	ci_srp_hazards[SRP_HAZARD_NUM];
+	volatile int		ci_flags;
+	uint64_t		ci_ttbr1;
+	vaddr_t			ci_el1_stkend;
 #endif
 
 #ifdef GPROF
@@ -111,6 +118,14 @@ struct cpu_info {
 #endif
 };
 
+#define CPUF_PRIMARY 		(1<<0)
+#define CPUF_AP	 		(1<<1)
+#define CPUF_IDENTIFY		(1<<2)
+#define CPUF_IDENTIFIED		(1<<3)
+#define CPUF_PRESENT		(1<<4)
+#define CPUF_GO			(1<<5)
+#define CPUF_RUNNING		(1<<6)
+
 static inline struct cpu_info *
 curcpu(void)
 {
@@ -137,10 +152,8 @@ extern struct cpu_info *cpu_info_list;
 #define CPU_INFO_ITERATOR		int
 #define CPU_INFO_FOREACH(cii, ci)	for (cii = 0, ci = cpu_info_list; \
 					    ci != NULL; ci = ci->ci_next)
-
 #define CPU_INFO_UNIT(ci)	((ci)->ci_dev ? (ci)->ci_dev->dv_unit : 0)
 #define MAXCPUS	8
-#define cpu_unidle(ci)
 
 extern struct cpu_info *cpu_info[MAXCPUS];
 
@@ -162,7 +175,15 @@ void cpu_boot_secondary_processors(void);
  * process as soon as possible.
  */
 
+#ifdef MULTIPROCESSOR
+void cpu_unidle(struct cpu_info *ci);
+#define signotify(p)            (aston(p), cpu_unidle((p)->p_cpu))
+void cpu_kick(struct cpu_info *);
+#else
+#define cpu_kick(ci)
+#define cpu_unidle(ci)
 #define signotify(p)            setsoftast()
+#endif
 
 /*
  * Preempt the current process if in interrupt from user mode,
@@ -264,6 +285,8 @@ intr_restore(u_long daif)
 	restore_daif(daif);
 }
 
+void	cpu_startclock(void);
+
 void	delay (unsigned);
 #define	DELAY(x)	delay(x)
 
diff --git a/sys/arch/arm64/include/intr.h b/sys/arch/arm64/include/intr.h
index 2bab7cda56d..b8c7dee870d 100644
--- a/sys/arch/arm64/include/intr.h
+++ b/sys/arch/arm64/include/intr.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: intr.h,v 1.7 2018/01/13 15:18:11 mpi Exp $ */
+/*	$OpenBSD: intr.h,v 1.8 2018/01/28 13:17:45 kettenis Exp $ */
 
 /*
  * Copyright (c) 2001-2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -164,6 +164,12 @@ void	*arm_intr_parent_establish_fdt(void *, int *, int,
 	    int (*)(void *), void *, char *);
 void	 arm_intr_parent_disestablish_fdt(void *);
 
+void	 arm_send_ipi(struct cpu_info *, int);
+extern void (*intr_send_ipi_func)(struct cpu_info *, int);
+
+#define ARM_IPI_NOP	0
+#define ARM_IPI_DDB	1
+
 #ifdef DIAGNOSTIC
 /*
  * Although this function is implemented in MI code, it must be in this MD