f6771dbb27
Shadow register support would not possibly have worked on multicore systems. The support code for it was also depending not on MIPS R2 but VSMP or SMTC kernels even though it makes perfect sense with UP kernels. SR sets are a scarce resource and the expected usage pattern is that users actually hardcode the register set numbers in their code. So fix the allocator by ditching it. Move the remaining CPU probe bits into the generic CPU probe. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1994 Waldorf GMBH
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* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003 Ralf Baechle
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* Copyright (C) 1996 Paul M. Antoine
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* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
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* Copyright (C) 2004 Maciej W. Rozycki
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*/
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#ifndef __ASM_CPU_INFO_H
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#define __ASM_CPU_INFO_H
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#include <asm/cache.h>
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/*
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* Descriptor for a cache
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*/
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struct cache_desc {
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unsigned int waysize; /* Bytes per way */
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unsigned short sets; /* Number of lines per set */
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unsigned char ways; /* Number of ways */
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unsigned char linesz; /* Size of line in bytes */
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unsigned char waybit; /* Bits to select in a cache set */
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unsigned char flags; /* Flags describing cache properties */
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};
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/*
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* Flag definitions
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*/
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#define MIPS_CACHE_NOT_PRESENT 0x00000001
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#define MIPS_CACHE_VTAG 0x00000002 /* Virtually tagged cache */
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#define MIPS_CACHE_ALIASES 0x00000004 /* Cache could have aliases */
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#define MIPS_CACHE_IC_F_DC 0x00000008 /* Ic can refill from D-cache */
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#define MIPS_IC_SNOOPS_REMOTE 0x00000010 /* Ic snoops remote stores */
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#define MIPS_CACHE_PINDEX 0x00000020 /* Physically indexed cache */
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struct cpuinfo_mips {
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unsigned long udelay_val;
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unsigned long asid_cache;
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/*
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* Capability and feature descriptor structure for MIPS CPU
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*/
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unsigned long options;
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unsigned long ases;
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unsigned int processor_id;
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unsigned int fpu_id;
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unsigned int cputype;
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int isa_level;
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int tlbsize;
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struct cache_desc icache; /* Primary I-cache */
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struct cache_desc dcache; /* Primary D or combined I/D cache */
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struct cache_desc scache; /* Secondary cache */
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struct cache_desc tcache; /* Tertiary/split secondary cache */
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int srsets; /* Shadow register sets */
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#if defined(CONFIG_MIPS_MT_SMTC)
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/*
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* In the MIPS MT "SMTC" model, each TC is considered
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* to be a "CPU" for the purposes of scheduling, but
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* exception resources, ASID spaces, etc, are common
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* to all TCs within the same VPE.
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*/
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int vpe_id; /* Virtual Processor number */
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int tc_id; /* Thread Context number */
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#endif /* CONFIG_MIPS_MT */
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void *data; /* Additional data */
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} __attribute__((aligned(SMP_CACHE_BYTES)));
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extern struct cpuinfo_mips cpu_data[];
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#define current_cpu_data cpu_data[smp_processor_id()]
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#define raw_current_cpu_data cpu_data[raw_smp_processor_id()]
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extern void cpu_probe(void);
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extern void cpu_report(void);
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extern const char *__cpu_name[];
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#define cpu_name_string() __cpu_name[smp_processor_id()]
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#endif /* __ASM_CPU_INFO_H */
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