patch-2.4.6 linux/include/asm-mips/cpu.h

• Lines: 162
• Date: Mon Jul 2 13:56:40 2001
• Orig file: v2.4.5/linux/include/asm-mips/cpu.h
• Orig date: Sat May 13 08:31:25 2000

diff -u --recursive --new-file v2.4.5/linux/include/asm-mips/cpu.h linux/include/asm-mips/cpu.h
@@ -1,40 +1,132 @@
-/* $Id: cpu.h,v 1.1 1996/06/23 09:38:33 dm Exp $
+/*
  * cpu.h: Values of the PRId register used to match up
  *        various MIPS cpu types.
  *
  * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
  */
-#ifndef _MIPS_CPU_H
-#define _MIPS_CPU_H
+#ifndef _ASM_CPU_H
+#define _ASM_CPU_H
+
+#include <asm/cache.h>
+/* Assigned Company values for bits 23:16 of the PRId Register  
+   (CP0 register 15, select 0).  As of the MIPS32 and MIPS64 specs from 
+   MTI, the PRId register is defined in this (backwards compatible)
+   way:
+
+  +----------------+----------------+----------------+----------------+
+  | Company Options| Company ID     | Processor ID   | Revision       |
+  +----------------+----------------+----------------+----------------+
+   31            24 23            16 15             8 7
+
+   I don't have docs for all the previous processors, but my impression is
+   that bits 16-23 have been 0 for all MIPS processors before the MIPS32/64
+   spec.  
+*/
+
+#define PRID_COMP_LEGACY       0x000000
+#define PRID_COMP_MIPS         0x010000
+#define PRID_COMP_ALCHEMY      0x030000
+/* 
+ * Don't know who should be here...QED and Sandcraft, maybe?
+ */
+#define PRID_COMP_SIBYTE       0x040000
 
 /*
  * Assigned values for the product ID register.  In order to detect a
  * certain CPU type exactly eventually additional registers may need to
- * be examined.
+ * be examined.  These are valid when 23:16 == PRID_COMP_LEGACY
+ */
+#define PRID_IMP_R2000		0x0100
+#define PRID_IMP_AU1000	0x0100
+#define PRID_IMP_R3000		0x0200		/* Same as R2000A  */
+#define PRID_IMP_R6000		0x0300		/* Same as R3000A  */
+#define PRID_IMP_R4000		0x0400
+#define PRID_IMP_R6000A		0x0600
+#define PRID_IMP_R10000		0x0900
+#define PRID_IMP_R4300		0x0b00
+#define PRID_IMP_R12000		0x0e00
+#define PRID_IMP_R8000		0x1000
+#define PRID_IMP_R4600		0x2000
+#define PRID_IMP_R4700		0x2100
+#define PRID_IMP_TX39		0x2200
+#define PRID_IMP_R4640		0x2200
+#define PRID_IMP_R4650		0x2200		/* Same as R4640 */
+#define PRID_IMP_R5000		0x2300
+#define PRID_IMP_R5432		0x5400
+#define PRID_IMP_SONIC		0x2400
+#define PRID_IMP_MAGIC		0x2500
+#define PRID_IMP_RM7000		0x2700
+#define PRID_IMP_NEVADA		0x2800		/* RM5260 ??? */
+#define PRID_IMP_4KC		0x8000
+#define PRID_IMP_5KC		0x8100
+#define PRID_IMP_4KEC		0x8400
+#define PRID_IMP_4KSC		0x8600
+
+
+#define PRID_IMP_UNKNOWN	0xff00
+
+/*
+ * These are the PRID's for when 23:16 == PRID_COMP_SIBYTE
+ */
+
+#define PRID_IMP_SB1            0x0100
+
+/*
+ * Definitions for 7:0 on legacy processors
+ */
+
+
+#define PRID_REV_R4400		0x0040
+#define PRID_REV_R3000A		0x0030
+#define PRID_REV_R3000		0x0020
+#define PRID_REV_R2000A		0x0010
+#define PRID_REV_TX3912 	0x0010
+#define PRID_REV_TX3922 	0x0030
+#define PRID_REV_TX3927 	0x0040
+
+#ifndef  _LANGUAGE_ASSEMBLY
+/*
+ * Capability and feature descriptor structure for MIPS CPU
+ */
+struct mips_cpu {
+	unsigned int processor_id;
+	unsigned int cputype;		/* Old "mips_cputype" code */
+	int isa_level;
+	int options;
+	int tlbsize;
+	struct cache_desc icache;	/* Primary I-cache */
+	struct cache_desc dcache;	/* Primary D or combined I/D cache */
+	struct cache_desc scache;	/* Secondary cache */
+	struct cache_desc tcache;	/* Tertiary/split secondary cache */
+};
+
+#endif
+
+/*
+ * ISA Level encodings
+ */
+#define MIPS_CPU_ISA_I		0x00000001
+#define MIPS_CPU_ISA_II		0x00000002
+#define MIPS_CPU_ISA_III	0x00000003
+#define MIPS_CPU_ISA_IV		0x00000004
+#define MIPS_CPU_ISA_V		0x00000005
+#define MIPS_CPU_ISA_M32	0x00000020
+#define MIPS_CPU_ISA_M64	0x00000040
+
+/*
+ * CPU Option encodings
  */
-#define PRID_IMP_R2000    0x0100
-#define PRID_IMP_R3000    0x0200
-#define PRID_IMP_R6000    0x0300
-#define PRID_IMP_R4000    0x0400
-#define PRID_IMP_R6000A   0x0600
-#define PRID_IMP_R10000   0x0900
-#define PRID_IMP_R4300    0x0b00
-#define PRID_IMP_R8000    0x1000
-#define PRID_IMP_R4600    0x2000
-#define PRID_IMP_R4700    0x2100
-#define PRID_IMP_R4640    0x2200
-#define PRID_IMP_R4650    0x2200		/* Same as R4640 */
-#define PRID_IMP_R5000    0x2300
-#define PRID_IMP_SONIC    0x2400
-#define PRID_IMP_MAGIC    0x2500
-#define PRID_IMP_RM7000   0x2700
-#define PRID_IMP_NEVADA   0x2800		/* RM5260 ??? */
-
-#define PRID_IMP_UNKNOWN  0xff00
-
-#define PRID_REV_R4400    0x0040
-#define PRID_REV_R3000A   0x0030
-#define PRID_REV_R3000    0x0020
-#define PRID_REV_R2000A   0x0010
+#define MIPS_CPU_TLB		0x00000001  /* CPU has TLB */
+/* Leave a spare bit for variant MMU types... */
+#define MIPS_CPU_4KEX		0x00000004  /* "R4K" exception model */
+#define MIPS_CPU_4KTLB		0x00000008  /* "R4K" TLB handler */
+#define MIPS_CPU_FPU		0x00000010  /* CPU has FPU */
+#define MIPS_CPU_32FPR		0x00000020  /* 32 dbl. prec. FP registers */
+#define MIPS_CPU_COUNTER	0x00000040 /* Cycle count/compare */
+#define MIPS_CPU_WATCH		0x00000080  /* watchpoint registers */
+#define MIPS_CPU_MIPS16		0x00000100  /* code compression */
+#define MIPS_CPU_DIVEC		0x00000200  /* dedicated interrupt vector */
+#define MIPS_CPU_VCE		0x00000400  /* virt. coherence conflict possible */
+#define MIPS_CPU_CACHE_CDEX	0x00000800 /* Create_Dirty_Exclusive CACHE op */
 
-#endif /* !(_MIPS_CPU_H) */
+#endif /* _ASM_CPU_H */