mipsregs.h
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上传日期:2013-02-24
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- /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1994, 1995, 1996, 1997, 1999 by Ralf Baechle
- * Modified for further R[236]000 support by Paul M. Antoine, 1996.
- * Copyright (C) 1999 Silicon Graphics, Inc.
- */
- #ifndef _ASM_MIPSREGS_H
- #define _ASM_MIPSREGS_H
- #include <linux/linkage.h>
- /*
- * The following macros are especially useful for __asm__
- * inline assembler.
- */
- #ifndef __STR
- #define __STR(x) #x
- #endif
- #ifndef STR
- #define STR(x) __STR(x)
- #endif
- /*
- * Coprocessor 0 register names
- */
- #define CP0_INDEX $0
- #define CP0_RANDOM $1
- #define CP0_ENTRYLO0 $2
- #define CP0_ENTRYLO1 $3
- #define CP0_CONTEXT $4
- #define CP0_PAGEMASK $5
- #define CP0_WIRED $6
- #define CP0_INFO $7
- #define CP0_BADVADDR $8
- #define CP0_COUNT $9
- #define CP0_ENTRYHI $10
- #define CP0_COMPARE $11
- #define CP0_STATUS $12
- #define CP0_CAUSE $13
- #define CP0_EPC $14
- #define CP0_PRID $15
- #define CP0_CONFIG $16
- #define CP0_LLADDR $17
- #define CP0_WATCHLO $18
- #define CP0_WATCHHI $19
- #define CP0_XCONTEXT $20
- #define CP0_FRAMEMASK $21
- #define CP0_DIAGNOSTIC $22
- #define CP0_PERFORMANCE $25
- #define CP0_ECC $26
- #define CP0_CACHEERR $27
- #define CP0_TAGLO $28
- #define CP0_TAGHI $29
- #define CP0_ERROREPC $30
- /*
- * Coprocessor 1 (FPU) register names
- */
- #define CP1_REVISION $0
- #define CP1_STATUS $31
- /*
- * Values for PageMask register
- */
- #define PM_4K 0x00000000
- #define PM_16K 0x00006000
- #define PM_64K 0x0001e000
- #define PM_256K 0x0007e000
- #define PM_1M 0x001fe000
- #define PM_4M 0x007fe000
- #define PM_16M 0x01ffe000
- /*
- * Values used for computation of new tlb entries
- */
- #define PL_4K 12
- #define PL_16K 14
- #define PL_64K 16
- #define PL_256K 18
- #define PL_1M 20
- #define PL_4M 22
- #define PL_16M 24
- /*
- * Macros to access the system control coprocessor
- */
- #define read_32bit_cp0_register(source)
- ({ int __res;
- __asm__ __volatile__(
- "mfc0t%0,"STR(source)
- : "=r" (__res));
- __res;})
- #define read_64bit_cp0_register(source)
- ({ int __res;
- __asm__ __volatile__(
- ".settmips3nt"
- "dmfc0t%0,"STR(source)"nt"
- ".settmips0"
- : "=r" (__res));
- __res;})
- #define write_32bit_cp0_register(register,value)
- __asm__ __volatile__(
- "mtc0t%0,"STR(register)
- : : "r" (value));
- #define write_64bit_cp0_register(register,value)
- __asm__ __volatile__(
- ".settmips3nt"
- "dmtc0t%0,"STR(register)"nt"
- ".settmips0"
- : : "r" (value))
- /*
- * R4x00 interrupt enable / cause bits
- */
- #define IE_SW0 (1<< 8)
- #define IE_SW1 (1<< 9)
- #define IE_IRQ0 (1<<10)
- #define IE_IRQ1 (1<<11)
- #define IE_IRQ2 (1<<12)
- #define IE_IRQ3 (1<<13)
- #define IE_IRQ4 (1<<14)
- #define IE_IRQ5 (1<<15)
- /*
- * R4x00 interrupt cause bits
- */
- #define C_SW0 (1<< 8)
- #define C_SW1 (1<< 9)
- #define C_IRQ0 (1<<10)
- #define C_IRQ1 (1<<11)
- #define C_IRQ2 (1<<12)
- #define C_IRQ3 (1<<13)
- #define C_IRQ4 (1<<14)
- #define C_IRQ5 (1<<15)
- #ifndef _LANGUAGE_ASSEMBLY
- /*
- * Manipulate the status register.
- * Mostly used to access the interrupt bits.
- */
- #define __BUILD_SET_CP0(name,register)
- extern __inline__ unsigned int
- set_cp0_##name(unsigned int change, unsigned int new)
- {
- unsigned int res;
-
- res = read_32bit_cp0_register(register);
- res &= ~change;
- res |= (new & change);
- write_32bit_cp0_register(register, res);
-
- return res;
- }
- __BUILD_SET_CP0(status,CP0_STATUS)
- __BUILD_SET_CP0(cause,CP0_CAUSE)
- __BUILD_SET_CP0(config,CP0_CONFIG)
- #endif /* defined (_LANGUAGE_ASSEMBLY) */
- /*
- * Bitfields in the R4xx0 cp0 status register
- */
- #define ST0_IE 0x00000001
- #define ST0_EXL 0x00000002
- #define ST0_ERL 0x00000004
- #define ST0_KSU 0x00000018
- # define KSU_USER 0x00000010
- # define KSU_SUPERVISOR 0x00000008
- # define KSU_KERNEL 0x00000000
- #define ST0_UX 0x00000020
- #define ST0_SX 0x00000040
- #define ST0_KX 0x00000080
- #define ST0_DE 0x00010000
- #define ST0_CE 0x00020000
- /*
- * Status register bits available in all MIPS CPUs.
- */
- #define ST0_IM 0x0000ff00
- #define STATUSB_IP0 8
- #define STATUSF_IP0 (1 << 8)
- #define STATUSB_IP1 9
- #define STATUSF_IP1 (1 << 9)
- #define STATUSB_IP2 10
- #define STATUSF_IP2 (1 << 10)
- #define STATUSB_IP3 11
- #define STATUSF_IP3 (1 << 11)
- #define STATUSB_IP4 12
- #define STATUSF_IP4 (1 << 12)
- #define STATUSB_IP5 13
- #define STATUSF_IP5 (1 << 13)
- #define STATUSB_IP6 14
- #define STATUSF_IP6 (1 << 14)
- #define STATUSB_IP7 15
- #define STATUSF_IP7 (1 << 15)
- #define ST0_CH 0x00040000
- #define ST0_SR 0x00100000
- #define ST0_TS 0x00200000
- #define ST0_BEV 0x00400000
- #define ST0_RE 0x02000000
- #define ST0_FR 0x04000000
- #define ST0_CU 0xf0000000
- #define ST0_CU0 0x10000000
- #define ST0_CU1 0x20000000
- #define ST0_CU2 0x40000000
- #define ST0_CU3 0x80000000
- #define ST0_XX 0x80000000 /* MIPS IV naming */
- /*
- * Bitfields and bit numbers in the coprocessor 0 cause register.
- *
- * Refer to your MIPS R4xx0 manual, chapter 5 for explanation.
- */
- #define CAUSEB_EXCCODE 2
- #define CAUSEF_EXCCODE (31 << 2)
- #define CAUSEB_IP 8
- #define CAUSEF_IP (255 << 8)
- #define CAUSEB_IP0 8
- #define CAUSEF_IP0 (1 << 8)
- #define CAUSEB_IP1 9
- #define CAUSEF_IP1 (1 << 9)
- #define CAUSEB_IP2 10
- #define CAUSEF_IP2 (1 << 10)
- #define CAUSEB_IP3 11
- #define CAUSEF_IP3 (1 << 11)
- #define CAUSEB_IP4 12
- #define CAUSEF_IP4 (1 << 12)
- #define CAUSEB_IP5 13
- #define CAUSEF_IP5 (1 << 13)
- #define CAUSEB_IP6 14
- #define CAUSEF_IP6 (1 << 14)
- #define CAUSEB_IP7 15
- #define CAUSEF_IP7 (1 << 15)
- #define CAUSEB_IV 23
- #define CAUSEF_IV (1 << 23)
- #define CAUSEB_CE 28
- #define CAUSEF_CE (3 << 28)
- #define CAUSEB_BD 31
- #define CAUSEF_BD (1 << 31)
- /*
- * Bits in the coprocessor 0 config register.
- */
- #define CONF_CM_CACHABLE_NO_WA 0
- #define CONF_CM_CACHABLE_WA 1
- #define CONF_CM_UNCACHED 2
- #define CONF_CM_CACHABLE_NONCOHERENT 3
- #define CONF_CM_CACHABLE_CE 4
- #define CONF_CM_CACHABLE_COW 5
- #define CONF_CM_CACHABLE_CUW 6
- #define CONF_CM_CACHABLE_ACCELERATED 7
- #define CONF_CM_CMASK 7
- #define CONF_DB (1 << 4)
- #define CONF_IB (1 << 5)
- #define CONF_SC (1 << 17)
- /*
- * R10000 performance counter definitions.
- *
- * FIXME: The R10000 performance counter opens a nice way to implement CPU
- * time accounting with a precision of one cycle. I don't have
- * R10000 silicon but just a manual, so ...
- */
- /*
- * Events counted by counter #0
- */
- #define CE0_CYCLES 0
- #define CE0_INSN_ISSUED 1
- #define CE0_LPSC_ISSUED 2
- #define CE0_S_ISSUED 3
- #define CE0_SC_ISSUED 4
- #define CE0_SC_FAILED 5
- #define CE0_BRANCH_DECODED 6
- #define CE0_QW_WB_SECONDARY 7
- #define CE0_CORRECTED_ECC_ERRORS 8
- #define CE0_ICACHE_MISSES 9
- #define CE0_SCACHE_I_MISSES 10
- #define CE0_SCACHE_I_WAY_MISSPREDICTED 11
- #define CE0_EXT_INTERVENTIONS_REQ 12
- #define CE0_EXT_INVALIDATE_REQ 13
- #define CE0_VIRTUAL_COHERENCY_COND 14
- #define CE0_INSN_GRADUATED 15
- /*
- * Events counted by counter #1
- */
- #define CE1_CYCLES 0
- #define CE1_INSN_GRADUATED 1
- #define CE1_LPSC_GRADUATED 2
- #define CE1_S_GRADUATED 3
- #define CE1_SC_GRADUATED 4
- #define CE1_FP_INSN_GRADUATED 5
- #define CE1_QW_WB_PRIMARY 6
- #define CE1_TLB_REFILL 7
- #define CE1_BRANCH_MISSPREDICTED 8
- #define CE1_DCACHE_MISS 9
- #define CE1_SCACHE_D_MISSES 10
- #define CE1_SCACHE_D_WAY_MISSPREDICTED 11
- #define CE1_EXT_INTERVENTION_HITS 12
- #define CE1_EXT_INVALIDATE_REQ 13
- #define CE1_SP_HINT_TO_CEXCL_SC_BLOCKS 14
- #define CE1_SP_HINT_TO_SHARED_SC_BLOCKS 15
- /*
- * These flags define in which priviledge mode the counters count events
- */
- #define CEB_USER 8 /* Count events in user mode, EXL = ERL = 0 */
- #define CEB_SUPERVISOR 4 /* Count events in supvervisor mode EXL = ERL = 0 */
- #define CEB_KERNEL 2 /* Count events in kernel mode EXL = ERL = 0 */
- #define CEB_EXL 1 /* Count events with EXL = 1, ERL = 0 */
- #ifndef _LANGUAGE_ASSEMBLY
- /*
- * Functions to access the performance counter and control registers
- */
- extern asmlinkage unsigned int read_perf_cntr(unsigned int counter);
- extern asmlinkage void write_perf_cntr(unsigned int counter, unsigned int val);
- extern asmlinkage unsigned int read_perf_cntl(unsigned int counter);
- extern asmlinkage void write_perf_cntl(unsigned int counter, unsigned int val);
- #endif
- #endif /* _ASM_MIPSREGS_H */