0,0 → 1,166 |
/* |
* Copyright (c) 2003-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup mips32mm |
* @{ |
*/ |
/** @file |
*/ |
|
#ifndef KERN_mips32_TLB_H_ |
#define KERN_mips32_TLB_H_ |
|
#include <arch/exception.h> |
|
#ifdef TLBCNT |
# define TLB_ENTRY_COUNT TLBCNT |
#else |
# define TLB_ENTRY_COUNT 48 |
#endif |
|
#define TLB_WIRED 1 |
#define TLB_KSTACK_WIRED_INDEX 0 |
|
#define TLB_PAGE_MASK_16K (0x3<<13) |
|
#define PAGE_UNCACHED 2 |
#define PAGE_CACHEABLE_EXC_WRITE 5 |
|
typedef union { |
struct { |
#ifdef BIG_ENDIAN |
unsigned : 2; /* zero */ |
unsigned pfn : 24; /* frame number */ |
unsigned c : 3; /* cache coherency attribute */ |
unsigned d : 1; /* dirty/write-protect bit */ |
unsigned v : 1; /* valid bit */ |
unsigned g : 1; /* global bit */ |
#else |
unsigned g : 1; /* global bit */ |
unsigned v : 1; /* valid bit */ |
unsigned d : 1; /* dirty/write-protect bit */ |
unsigned c : 3; /* cache coherency attribute */ |
unsigned pfn : 24; /* frame number */ |
unsigned : 2; /* zero */ |
#endif |
} __attribute__ ((packed)); |
uint32_t value; |
} entry_lo_t; |
|
typedef union { |
struct { |
#ifdef BIG_ENDIAN |
unsigned vpn2 : 19; |
unsigned : 5; |
unsigned asid : 8; |
#else |
unsigned asid : 8; |
unsigned : 5; |
unsigned vpn2 : 19; |
#endif |
} __attribute__ ((packed)); |
uint32_t value; |
} entry_hi_t; |
|
typedef union { |
struct { |
#ifdef BIG_ENDIAN |
unsigned : 7; |
unsigned mask : 12; |
unsigned : 13; |
#else |
unsigned : 13; |
unsigned mask : 12; |
unsigned : 7; |
#endif |
} __attribute__ ((packed)); |
uint32_t value; |
} page_mask_t; |
|
typedef union { |
struct { |
#ifdef BIG_ENDIAN |
unsigned p : 1; |
unsigned : 27; |
unsigned index : 4; |
#else |
unsigned index : 4; |
unsigned : 27; |
unsigned p : 1; |
#endif |
} __attribute__ ((packed)); |
uint32_t value; |
} tlb_index_t; |
|
/** Probe TLB for Matching Entry |
* |
* Probe TLB for Matching Entry. |
*/ |
static inline void tlbp(void) |
{ |
asm volatile ("tlbp\n\t"); |
} |
|
|
/** Read Indexed TLB Entry |
* |
* Read Indexed TLB Entry. |
*/ |
static inline void tlbr(void) |
{ |
asm volatile ("tlbr\n\t"); |
} |
|
/** Write Indexed TLB Entry |
* |
* Write Indexed TLB Entry. |
*/ |
static inline void tlbwi(void) |
{ |
asm volatile ("tlbwi\n\t"); |
} |
|
/** Write Random TLB Entry |
* |
* Write Random TLB Entry. |
*/ |
static inline void tlbwr(void) |
{ |
asm volatile ("tlbwr\n\t"); |
} |
|
#define tlb_invalidate(asid) tlb_invalidate_asid(asid) |
|
extern void tlb_invalid(istate_t *istate); |
extern void tlb_refill(istate_t *istate); |
extern void tlb_modified(istate_t *istate); |
|
#endif |
|
/** @} |
*/ |