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1.1 ! root 1: /* ! 2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. ! 3: * ! 4: * @APPLE_LICENSE_HEADER_START@ ! 5: * ! 6: * The contents of this file constitute Original Code as defined in and ! 7: * are subject to the Apple Public Source License Version 1.1 (the ! 8: * "License"). You may not use this file except in compliance with the ! 9: * License. Please obtain a copy of the License at ! 10: * http://www.apple.com/publicsource and read it before using this file. ! 11: * ! 12: * This Original Code and all software distributed under the License are ! 13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER ! 14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, ! 15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, ! 16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the ! 17: * License for the specific language governing rights and limitations ! 18: * under the License. ! 19: * ! 20: * @APPLE_LICENSE_HEADER_END@ ! 21: */ ! 22: /* ! 23: * Header files for the hardware virtual memory mapping stuff ! 24: */ ! 25: #ifndef _PPC_MAPPINGS_H_ ! 26: #define _PPC_MAPPINGS_H_ ! 27: ! 28: typedef struct PCA { /* PTEG Control Area */ ! 29: unsigned int PCAlock; /* PCA lock */ ! 30: union flgs { ! 31: unsigned int PCAallo; /* Allocation controls */ ! 32: struct PCAalflgs { /* Keep these in order!!! */ ! 33: unsigned char PCAfree; /* Indicates the slot is free */ ! 34: unsigned char PCAauto; /* Indicates that the PTE was autogenned */ ! 35: unsigned char PCAslck; /* Indicates that the slot is locked */ ! 36: unsigned char PCAsteal; /* Steal scan start position */ ! 37: } PCAalflgs; ! 38: } flgs; ! 39: unsigned int PCAgas[6]; /* Filler to 32 byte boundary */ ! 40: unsigned int PCAhash[8]; /* PTEG hash chains */ ! 41: } PCA; ! 42: ! 43: typedef struct mapping { ! 44: struct mapping *next; /* MUST BE FIRST - chain off physent */ ! 45: struct mapping *hashnext; /* Next mapping in same hash group */ ! 46: unsigned int *PTEhash; /* Pointer to the head of the mapping hash list */ ! 47: unsigned int *PTEent; /* Pointer to PTE if exists */ ! 48: struct phys_entry *physent; /* Quick pointer back to the physical entry */ ! 49: unsigned int PTEv; /* Virtual half of HW PTE */ ! 50: unsigned int PTEr; /* Real half of HW PTE. This is used ONLY if ! 51: there is no physical entry associated ! 52: with this mapping, ie.e, physent==0 */ ! 53: struct pmap *pmap; /* Quick pointer back to the containing pmap */ ! 54: } mapping; ! 55: ! 56: #define MAPPING_NULL ((struct mapping *) 0) ! 57: ! 58: typedef struct mappingctl { ! 59: unsigned int mapclock; /* Mapping allocation lock */ ! 60: unsigned int mapcrecurse; /* Mapping allocation recursion control */ ! 61: struct mappingblok *mapcnext; /* First mapping block with free entries */ ! 62: struct mappingblok *mapclast; /* Last mapping block with free entries */ ! 63: struct mappingblok *mapcrel; /* List of deferred block releases */ ! 64: unsigned int mapcfree; /* Total free entries on list */ ! 65: unsigned int mapcinuse; /* Total entries in use */ ! 66: unsigned int mapcreln; /* Total blocks on pending release list */ ! 67: int mapcholdoff; /* Hold off clearing release list */ ! 68: unsigned int mapcfreec; /* Total calls to mapping free */ ! 69: unsigned int mapcallocc; /* Total calls to mapping alloc */ ! 70: unsigned int mapcmin; /* Minimum free mappings to keep */ ! 71: unsigned int mapcgas[4]; /* Pad to 64 bytes */ ! 72: } mappingctl; ! 73: ! 74: #define MAPPERBLOK 127 ! 75: #define MAPALTHRSH (4*MAPPERBLOK) ! 76: #define MAPFRTHRSH (2 * ((MAPALTHRSH + MAPPERBLOK - 1) / MAPPERBLOK)) ! 77: typedef struct mappingblok { ! 78: unsigned int mapblokfree[4]; /* Bit map of free mapping entrys */ ! 79: unsigned int mapblokvrswap; /* Virtual address XORed with physical address */ ! 80: unsigned int mapblokflags; /* Various flags */ ! 81: #define mbPerm 0x80000000 /* Block is permanent */ ! 82: struct mappingblok *nextblok; /* Pointer to the next mapping block */ ! 83: } mappingblok; ! 84: ! 85: typedef struct autogenblok { ! 86: unsigned int AGNstart; /* Start of range */ ! 87: unsigned int AGNsize; /* Length of range */ ! 88: struct autogenblok *AGNnext; /* Next autogen block */ ! 89: unsigned int AGNpteX; /* Real part of translation */ ! 90: } autogenblok; ! 91: ! 92: extern mappingctl mapCtl; /* Mapping allocation control */ ! 93: ! 94: extern void mapping_phys_init(struct phys_entry *pp, unsigned int pa, unsigned int wimg); /* Initializes hw specific storage attributes */ ! 95: extern boolean_t mapping_remove(space_t space, vm_offset_t va); /* Remove a single mapping for this VADDR */ ! 96: extern void mapping_free_init(vm_offset_t mbl, int perm, boolean_t locked); /* Sets start and end of a block of mappings */ ! 97: extern void mapping_adjust(void); /* Adjust free mapping count */ ! 98: extern void mapping_free_prime(void); /* Primes the mapping block release list */ ! 99: extern void mapping_prealloc(unsigned int); /* Preallocate mappings for large use */ ! 100: extern void mapping_relpre(void); /* Releases preallocate request */ ! 101: extern void mapping_init(void); /* Do initial stuff */ ! 102: extern mapping *mapping_alloc(void); /* Obtain a mapping */ ! 103: extern void mapping_free(struct mapping *mp); /* Release a mapping */ ! 104: extern boolean_t mapping_tst_ref(struct phys_entry *pp); /* Tests the reference bit of a physical page */ ! 105: extern boolean_t mapping_tst_mod(struct phys_entry *pp); /* Tests the change bit of a physical page */ ! 106: extern void mapping_set_ref(struct phys_entry *pp); /* Sets the reference bit of a physical page */ ! 107: extern void mapping_clr_ref(struct phys_entry *pp); /* Clears the reference bit of a physical page */ ! 108: extern void mapping_set_mod(struct phys_entry *pp); /* Sets the change bit of a physical page */ ! 109: extern void mapping_clr_mod(struct phys_entry *pp); /* Clears the change bit of a physical page */ ! 110: extern void mapping_invall(struct phys_entry *pp); /* Clear all PTEs pointing to a physical page */ ! 111: extern void mapping_protect(struct phys_entry *pp, vm_prot_t prot, boolean_t locked); /* Change protection of all mappings to page */ ! 112: extern mapping *mapping_make(struct pmap *pmap, space_t space, struct phys_entry *pp, vm_offset_t va, vm_offset_t pa, vm_prot_t prot, int attr); /* Make an address mapping */ ! 113: extern int mapping_remap(space_t space, vm_offset_t from, vm_offset_t to); /* Remap an address mapping */ ! 114: extern void mapping_purge(struct phys_entry *pp); /* Remove all mappings for this physent */ ! 115: extern boolean_t mapping_remove(space_t space, vm_offset_t va); /* Remove a single mapping for this VADDR */ ! 116: extern space_t mapping_space(void); /* Generate a unique space ID */ ! 117: extern vm_offset_t mapping_p2v(space_t space, struct phys_entry *pp); /* Finds first virtual mapping of a physical page in a space */ ! 118: extern void mapping_phys_attr(struct phys_entry *pp, vm_prot_t prot, unsigned int wimg); /* Sets the default physical page attributes */ ! 119: extern int mapalc(struct mappingblok *mb); /* Finds and allcates a mapping entry */ ! 120: extern void ignore_zero_fault(boolean_t type); /* Sets up to ignore or honor any fault on page 0 access for the current thread */ ! 121: ! 122: ! 123: extern boolean_t autogen_map(space_t space, vm_offset_t va, vm_offset_t spa, vm_offset_t epa, vm_prot_t prot, int attr); /* Build an autogen area */ ! 124: ! 125: extern mapping *hw_lock_phys_vir(space_t space, vm_offset_t va); /* Finds and locks a physical entry by vaddr */ ! 126: extern mapping *hw_cpv(struct mapping *mapping); /* Converts a physical mapping control block address to virtual */ ! 127: extern mapping *hw_cvp(struct mapping *mapping); /* Converts a virtual mapping control block address to physical */ ! 128: extern void hw_rem_map(struct mapping *mapping); /* Remove a mapping from the system */ ! 129: extern void hw_add_map(struct mapping *mp, space_t space, vm_offset_t va); /* Add a mapping to the PTEG hash list */ ! 130: extern void hw_prot(struct phys_entry *pp, vm_prot_t prot); /* Change the protection of a physical page */ ! 131: extern void hw_phys_attr(struct phys_entry *pp, vm_prot_t prot, unsigned int wimg); /* Sets the default physical page attributes */ ! 132: ! 133: extern boolean_t hw_tst_mod(struct phys_entry *pp); /* Tests change bit */ ! 134: extern void hw_set_mod(struct phys_entry *pp); /* Set change bit */ ! 135: extern void hw_clr_mod(struct phys_entry *pp); /* Clear change bit */ ! 136: ! 137: extern boolean_t hw_tst_ref(struct phys_entry *pp); /* Tests reference bit */ ! 138: extern void hw_set_ref(struct phys_entry *pp); /* Set reference bit */ ! 139: extern void hw_clr_ref(struct phys_entry *pp); /* Clear reference bit */ ! 140: ! 141: extern void hw_inv_all(struct phys_entry *pp); /* Invalidate all PTEs associated with page */ ! 142: extern void hw_set_user_space(space_t space); /* Indicate we need a space switch */ ! 143: extern void *LRA(space_t space, void *vaddr); /* Translate virtual to real using only HW tables */ ! 144: extern void dumpaddr(space_t space, vm_offset_t va); ! 145: extern void dumpmapping(struct mapping *mp); /* Print contents of a mapping */ ! 146: extern void dumppca(struct mapping *mp); /* Print contents of a PCA */ ! 147: extern void dumpphys(struct phys_entry *pp); /* Prints stuff starting at phys */ ! 148: extern unsigned int mappingdeb0; /* (TEST/DEBUG) */ ! 149: ! 150: #endif /* _PPC_MAPPINGS_H_ */ ! 151:
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