patch-2.1.30 linux/arch/sparc64/kernel/cpu.c

• Lines: 87
• Date: Thu Mar 20 16:43:31 1997
• Orig file: v2.1.29/linux/arch/sparc64/kernel/cpu.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.29/linux/arch/sparc64/kernel/cpu.c linux/arch/sparc64/kernel/cpu.c
@@ -0,0 +1,86 @@
+/* cpu.c: Dinky routines to look for the kind of Sparc cpu
+ *        we are on.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/system.h>
+
+struct cpu_iu_info {
+  short manuf;
+  short impl;
+  char* cpu_name;   /* should be enough I hope... */
+};
+
+struct cpu_fp_info {
+  short manuf;
+  short impl;
+  char fpu_vers;
+  char* fp_name;
+};
+
+/* In order to get the fpu type correct, you need to take the IDPROM's
+ * machine type value into consideration too.  I will fix this.
+ */
+struct cpu_fp_info linux_sparc_fpu[] = {
+  { 0x17, 0x10, 0, "FIXME: UltraSparc I FPU"},
+};
+
+#define NSPARCFPU  (sizeof(linux_sparc_fpu)/sizeof(struct cpu_fp_info))
+
+struct cpu_iu_info linux_sparc_chips[] = {
+  { 0x17, 0x10, "FIXME: UltraSparc I"},
+};
+
+#define NSPARCCHIPS  (sizeof(linux_sparc_chips)/sizeof(struct cpu_iu_info))
+
+char *sparc_cpu_type[NCPUS] = { "cpu-oops", "cpu-oops1", "cpu-oops2", "cpu-oops3" };
+char *sparc_fpu_type[NCPUS] = { "fpu-oops", "fpu-oops1", "fpu-oops2", "fpu-oops3" };
+
+unsigned int fsr_storage;
+
+__initfunc(void cpu_probe(void))
+{
+	int manuf, impl;
+	unsigned i, cpuid;
+	long ver, fpu_vers;
+
+	cpuid = get_cpuid();
+	
+	__asm__ __volatile__ ("rdpr %%ver, %0; stx %%fsr, [%1]" : "=r" (ver) : "r" (&fpu_vers));
+
+	manuf = ((ver >> 48)&0xffff);
+	impl = ((ver >> 32)&0xffff);
+
+	fpu_vers = ((fpu_vers>>17)&0x7);
+
+	for(i = 0; i<NSPARCCHIPS; i++) {
+		if(linux_sparc_chips[i].manuf == manuf)
+			if(linux_sparc_chips[i].impl == impl) {
+				sparc_cpu_type[cpuid] = linux_sparc_chips[i].cpu_name;
+				break;
+			}
+	}
+
+	if(i==NSPARCCHIPS) {
+		printk("DEBUG: manuf = 0x%x   impl = 0x%x\n", manuf, 
+			    impl);
+		sparc_cpu_type[cpuid] = "Unknow CPU";
+	}
+
+	for(i = 0; i<NSPARCFPU; i++) {
+		if(linux_sparc_fpu[i].manuf == manuf && linux_sparc_fpu[i].impl == impl)
+			if(linux_sparc_fpu[i].fpu_vers == fpu_vers) {
+				sparc_fpu_type[cpuid] = linux_sparc_fpu[i].fp_name;
+				break;
+			}
+	}
+
+	if(i == NSPARCFPU) {
+		printk("DEBUG: manuf = 0x%x  impl = 0x%x fsr.vers = 0x%x\n", manuf, impl,
+			    (unsigned)fpu_vers);
+		sparc_fpu_type[cpuid] = "Unknown FPU";
+	}
+}