patch-1.3.71 linux/include/asm-sparc/smp.h

• Lines: 92
• Date: Mon Mar 4 08:50:03 1996
• Orig file: v1.3.70/linux/include/asm-sparc/smp.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.70/linux/include/asm-sparc/smp.h linux/include/asm-sparc/smp.h
@@ -0,0 +1,91 @@
+/* smp.h: Sparc specific SMP stuff.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _SPARC_SMP_H
+#define _SPARC_SMP_H
+
+#include <asm/bitops.h>
+#include <asm/ptrace.h>
+
+/* Per processor Sparc parameters. */
+
+struct cpuinfo_sparc {
+	unsigned char impl;
+	unsigned char vers;
+	unsigned long udelay_val;
+};
+
+extern struct cpuinfo_sparc cpu_data[NR_CPUS];
+
+typedef klock_t volatile unsigned char;
+extern klock_t kernel_lock;
+
+#define KLOCK_HELD       0xff
+#define KLOCK_CLEAR      0x00
+
+struct sparc_ipi_invalidate {
+	struct mm_struct *mm;
+	unsigned long addr;   /* page for inv_pg, start for inv_rnge */
+	unsigned long end;    /* Used for inv_rnge only. */
+};
+
+struct sparc_ipimsg {
+	union {
+		/* Add more here as we need them. */
+		struct sparc_ipi_invalidate invmsg;
+	};
+};
+
+extern void smp_scan_prom_for_cpus(unsigned long, unsigned long);
+extern unsigned long smp_alloc_memory(unsigned long mem_base);
+extern unsigned long *kernel_stacks[NR_CPUS];
+extern unsigned char boot_cpu_id;
+extern unsigned long cpu_present_map;
+extern volatile unsigned long smp_invalidate_needed;
+extern unsigned long kernel_counter;
+extern volatile unsigned char active_kernel_processor;
+extern void smp_message_irq(int cpl, struct pt_regs *regs);
+extern void smp_reschedule_irq(int cpl, struct pt_regs *regs);
+extern void smp_invalidate_rcv(void);
+extern volatils unsigned long syscall_count;
+
+extern void (*smp_invalidate_all)(void);
+extern void (*smp_invalidate_mm)(struct mm_struct *);
+extern void (*smp_invalidate_range)(struct mm_struct *, unsigned long, unsigned long);
+extern void (*smp_invalidate_page)(struct vm_area_struct *, unsigned long);
+
+extern void smp_callin(void);
+extern void smp_boot_cpus(void);
+extern void smp_store_cpu_info(int id);
+
+extern _inline_ int smp_processor_id(void)
+{
+	int cpuid;
+
+	__asm__ __volatile__("rd %%tbr, %0\n\t"
+			     "srl %0, 24, %0\n\t"
+			     "and %0, 3, %0\n\t" :
+			     "=&r" (cpuid) :
+			     "0" (cpuid));
+	return cpuid;
+}
+
+/* Imperical PROM processor mailbox constants.  If the per-cpu mailbox
+ * contains something other than one of these then the ipi is from
+ * Linux's active_kernel_processor.  This facility exists so that
+ * the boot monitor can capture all the other cpus when one catches
+ * a watchdog reset or the user enters the monitor using L1-A keys.
+ */
+#define MBOX_STOPCPU          0xFB
+#define MBOX_IDLECPU          0xFC
+#define MBOX_IDLECPU2         0xFD
+#define MBOX_STOPCPU2         0xFE
+
+
+#define NO_PROC_ID            0xFF
+
+#define PROC_CHANGE_PENALTY   0x23
+
+#endif /* !(_SPARC_SMP_H) */