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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, 2000, 2001 by Ralf Baechle
 
-  * Copyright (C) 2000 Silicon Graphics, Inc.
 
-  * Modified for further R[236]000 support by Paul M. Antoine, 1996.
 
-  * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
 
-  * Copyright (C) 2000, 07 MIPS Technologies, Inc.
 
-  * Copyright (C) 2003, 2004  Maciej W. Rozycki
 
-  */
 
- #ifndef _ASM_MIPSREGS_H
 
- #define _ASM_MIPSREGS_H
 
- #include <linux/linkage.h>
 
- #include <asm/hazards.h>
 
- #include <asm/war.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
 
- /*
 
-  *  Configure language
 
-  */
 
- #ifdef __ASSEMBLY__
 
- #define _ULCAST_
 
- #else
 
- #define _ULCAST_ (unsigned long)
 
- #endif
 
- /*
 
-  * Coprocessor 0 register names
 
-  */
 
- #define CP0_INDEX $0
 
- #define CP0_RANDOM $1
 
- #define CP0_ENTRYLO0 $2
 
- #define CP0_ENTRYLO1 $3
 
- #define CP0_CONF $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_DEBUG $23
 
- #define CP0_DEPC $24
 
- #define CP0_PERFORMANCE $25
 
- #define CP0_ECC $26
 
- #define CP0_CACHEERR $27
 
- #define CP0_TAGLO $28
 
- #define CP0_TAGHI $29
 
- #define CP0_ERROREPC $30
 
- #define CP0_DESAVE $31
 
- /*
 
-  * R4640/R4650 cp0 register names.  These registers are listed
 
-  * here only for completeness; without MMU these CPUs are not useable
 
-  * by Linux.  A future ELKS port might take make Linux run on them
 
-  * though ...
 
-  */
 
- #define CP0_IBASE $0
 
- #define CP0_IBOUND $1
 
- #define CP0_DBASE $2
 
- #define CP0_DBOUND $3
 
- #define CP0_CALG $17
 
- #define CP0_IWATCH $18
 
- #define CP0_DWATCH $19
 
- /*
 
-  * Coprocessor 0 Set 1 register names
 
-  */
 
- #define CP0_S1_DERRADDR0  $26
 
- #define CP0_S1_DERRADDR1  $27
 
- #define CP0_S1_INTCONTROL $20
 
- /*
 
-  * Coprocessor 0 Set 2 register names
 
-  */
 
- #define CP0_S2_SRSCTL	  $12	/* MIPSR2 */
 
- /*
 
-  * Coprocessor 0 Set 3 register names
 
-  */
 
- #define CP0_S3_SRSMAP	  $12	/* MIPSR2 */
 
- /*
 
-  *  TX39 Series
 
-  */
 
- #define CP0_TX39_CACHE	$7
 
- /*
 
-  * Coprocessor 1 (FPU) register names
 
-  */
 
- #define CP1_REVISION   $0
 
- #define CP1_STATUS     $31
 
- /*
 
-  * FPU Status Register Values
 
-  */
 
- /*
 
-  * Status Register Values
 
-  */
 
- #define FPU_CSR_FLUSH   0x01000000      /* flush denormalised results to 0 */
 
- #define FPU_CSR_COND    0x00800000      /* $fcc0 */
 
- #define FPU_CSR_COND0   0x00800000      /* $fcc0 */
 
- #define FPU_CSR_COND1   0x02000000      /* $fcc1 */
 
- #define FPU_CSR_COND2   0x04000000      /* $fcc2 */
 
- #define FPU_CSR_COND3   0x08000000      /* $fcc3 */
 
- #define FPU_CSR_COND4   0x10000000      /* $fcc4 */
 
- #define FPU_CSR_COND5   0x20000000      /* $fcc5 */
 
- #define FPU_CSR_COND6   0x40000000      /* $fcc6 */
 
- #define FPU_CSR_COND7   0x80000000      /* $fcc7 */
 
- /*
 
-  * Bits 18 - 20 of the FPU Status Register will be read as 0,
 
-  * and should be written as zero.
 
-  */
 
- #define FPU_CSR_RSVD	0x001c0000
 
- /*
 
-  * X the exception cause indicator
 
-  * E the exception enable
 
-  * S the sticky/flag bit
 
- */
 
- #define FPU_CSR_ALL_X   0x0003f000
 
- #define FPU_CSR_UNI_X   0x00020000
 
- #define FPU_CSR_INV_X   0x00010000
 
- #define FPU_CSR_DIV_X   0x00008000
 
- #define FPU_CSR_OVF_X   0x00004000
 
- #define FPU_CSR_UDF_X   0x00002000
 
- #define FPU_CSR_INE_X   0x00001000
 
- #define FPU_CSR_ALL_E   0x00000f80
 
- #define FPU_CSR_INV_E   0x00000800
 
- #define FPU_CSR_DIV_E   0x00000400
 
- #define FPU_CSR_OVF_E   0x00000200
 
- #define FPU_CSR_UDF_E   0x00000100
 
- #define FPU_CSR_INE_E   0x00000080
 
- #define FPU_CSR_ALL_S   0x0000007c
 
- #define FPU_CSR_INV_S   0x00000040
 
- #define FPU_CSR_DIV_S   0x00000020
 
- #define FPU_CSR_OVF_S   0x00000010
 
- #define FPU_CSR_UDF_S   0x00000008
 
- #define FPU_CSR_INE_S   0x00000004
 
- /* Bits 0 and 1 of FPU Status Register specify the rounding mode */
 
- #define FPU_CSR_RM	0x00000003
 
- #define FPU_CSR_RN      0x0     /* nearest */
 
- #define FPU_CSR_RZ      0x1     /* towards zero */
 
- #define FPU_CSR_RU      0x2     /* towards +Infinity */
 
- #define FPU_CSR_RD      0x3     /* towards -Infinity */
 
- /*
 
-  * Values for PageMask register
 
-  */
 
- #ifdef CONFIG_CPU_VR41XX
 
- /* Why doesn't stupidity hurt ... */
 
- #define PM_1K		0x00000000
 
- #define PM_4K		0x00001800
 
- #define PM_16K		0x00007800
 
- #define PM_64K		0x0001f800
 
- #define PM_256K		0x0007f800
 
- #else
 
- #define PM_4K		0x00000000
 
- #define PM_8K		0x00002000
 
- #define PM_16K		0x00006000
 
- #define PM_32K		0x0000e000
 
- #define PM_64K		0x0001e000
 
- #define PM_128K		0x0003e000
 
- #define PM_256K		0x0007e000
 
- #define PM_512K		0x000fe000
 
- #define PM_1M		0x001fe000
 
- #define PM_2M		0x003fe000
 
- #define PM_4M		0x007fe000
 
- #define PM_8M		0x00ffe000
 
- #define PM_16M		0x01ffe000
 
- #define PM_32M		0x03ffe000
 
- #define PM_64M		0x07ffe000
 
- #define PM_256M		0x1fffe000
 
- #define PM_1G		0x7fffe000
 
- #endif
 
- /*
 
-  * Default page size for a given kernel configuration
 
-  */
 
- #ifdef CONFIG_PAGE_SIZE_4KB
 
- #define PM_DEFAULT_MASK	PM_4K
 
- #elif defined(CONFIG_PAGE_SIZE_8KB)
 
- #define PM_DEFAULT_MASK	PM_8K
 
- #elif defined(CONFIG_PAGE_SIZE_16KB)
 
- #define PM_DEFAULT_MASK	PM_16K
 
- #elif defined(CONFIG_PAGE_SIZE_32KB)
 
- #define PM_DEFAULT_MASK	PM_32K
 
- #elif defined(CONFIG_PAGE_SIZE_64KB)
 
- #define PM_DEFAULT_MASK	PM_64K
 
- #else
 
- #error Bad page size configuration!
 
- #endif
 
- /*
 
-  * Default huge tlb size for a given kernel configuration
 
-  */
 
- #ifdef CONFIG_PAGE_SIZE_4KB
 
- #define PM_HUGE_MASK	PM_1M
 
- #elif defined(CONFIG_PAGE_SIZE_8KB)
 
- #define PM_HUGE_MASK	PM_4M
 
- #elif defined(CONFIG_PAGE_SIZE_16KB)
 
- #define PM_HUGE_MASK	PM_16M
 
- #elif defined(CONFIG_PAGE_SIZE_32KB)
 
- #define PM_HUGE_MASK	PM_64M
 
- #elif defined(CONFIG_PAGE_SIZE_64KB)
 
- #define PM_HUGE_MASK	PM_256M
 
- #elif defined(CONFIG_MIPS_HUGE_TLB_SUPPORT)
 
- #error Bad page size configuration for hugetlbfs!
 
- #endif
 
- /*
 
-  * 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
 
- #define PL_64M		26
 
- #define PL_256M		28
 
- /*
 
-  * PageGrain bits
 
-  */
 
- #define PG_RIE		(_ULCAST_(1) <<  31)
 
- #define PG_XIE		(_ULCAST_(1) <<  30)
 
- #define PG_ELPA		(_ULCAST_(1) <<  29)
 
- #define PG_ESP		(_ULCAST_(1) <<  28)
 
- /*
 
-  * R4x00 interrupt enable / cause bits
 
-  */
 
- #define IE_SW0          (_ULCAST_(1) <<  8)
 
- #define IE_SW1          (_ULCAST_(1) <<  9)
 
- #define IE_IRQ0         (_ULCAST_(1) << 10)
 
- #define IE_IRQ1         (_ULCAST_(1) << 11)
 
- #define IE_IRQ2         (_ULCAST_(1) << 12)
 
- #define IE_IRQ3         (_ULCAST_(1) << 13)
 
- #define IE_IRQ4         (_ULCAST_(1) << 14)
 
- #define IE_IRQ5         (_ULCAST_(1) << 15)
 
- /*
 
-  * R4x00 interrupt cause bits
 
-  */
 
- #define C_SW0           (_ULCAST_(1) <<  8)
 
- #define C_SW1           (_ULCAST_(1) <<  9)
 
- #define C_IRQ0          (_ULCAST_(1) << 10)
 
- #define C_IRQ1          (_ULCAST_(1) << 11)
 
- #define C_IRQ2          (_ULCAST_(1) << 12)
 
- #define C_IRQ3          (_ULCAST_(1) << 13)
 
- #define C_IRQ4          (_ULCAST_(1) << 14)
 
- #define C_IRQ5          (_ULCAST_(1) << 15)
 
- /*
 
-  * 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
 
 
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