2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 1994 Waldorf GMBH
7 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003 Ralf Baechle
8 * Copyright (C) 1996 Paul M. Antoine
9 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
11 #ifndef __ASM_CPU_INFO_H
12 #define __ASM_CPU_INFO_H
14 #include <linux/config.h>
15 #include <asm/cache.h>
17 #ifdef CONFIG_SGI_IP27
18 #include <asm/sn/types.h>
22 * Descriptor for a cache
25 unsigned short linesz; /* Size of line in bytes */
26 unsigned short ways; /* Number of ways */
27 unsigned short sets; /* Number of lines per set */
28 unsigned int waysize; /* Bytes per way */
29 unsigned int waybit; /* Bits to select in a cache set */
30 unsigned int flags; /* Flags describing cache properties */
36 #define MIPS_CACHE_NOT_PRESENT 0x00000001
37 #define MIPS_CACHE_VTAG 0x00000002 /* Virtually tagged cache */
38 #define MIPS_CACHE_ALIASES 0x00000004 /* Cache could have aliases */
39 #define MIPS_CACHE_IC_F_DC 0x00000008 /* Ic can refill from D-cache */
42 unsigned long udelay_val;
43 unsigned long asid_cache;
44 #if defined(CONFIG_SGI_IP27)
45 // cpuid_t p_cpuid; /* PROM assigned cpuid */
46 cnodeid_t p_nodeid; /* my node ID in compact-id-space */
47 nasid_t p_nasid; /* my node ID in numa-as-id-space */
48 unsigned char p_slice; /* Physical position on node board */
51 unsigned long loops_per_sec;
52 unsigned long ipi_count;
53 unsigned long irq_attempt[NR_IRQS];
54 unsigned long smp_local_irq_count;
55 unsigned long prof_multiplier;
56 unsigned long prof_counter;
60 * Capability and feature descriptor structure for MIPS CPU
62 unsigned long options;
63 unsigned int processor_id;
68 struct cache_desc icache; /* Primary I-cache */
69 struct cache_desc dcache; /* Primary D or combined I/D cache */
70 struct cache_desc scache; /* Secondary cache */
71 struct cache_desc tcache; /* Tertiary/split secondary cache */
72 void *data; /* Additional data */
73 } __attribute__((aligned(SMP_CACHE_BYTES)));
75 extern struct cpuinfo_mips cpu_data[];
76 #define current_cpu_data cpu_data[smp_processor_id()]
78 extern void cpu_probe(void);
79 extern void cpu_report(void);
81 #endif /* __ASM_CPU_INFO_H */