X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8ad349bb6ed4a0be06e34c92be0d98b92e078db4..39236c6e673c41db228275375ab7fdb0f837b292:/osfmk/vm/pmap.h?ds=inline diff --git a/osfmk/vm/pmap.h b/osfmk/vm/pmap.h index 0a193919b..2e228d6d2 100644 --- a/osfmk/vm/pmap.h +++ b/osfmk/vm/pmap.h @@ -1,31 +1,29 @@ /* - * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2012 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. The rights granted to you under the - * License may not be used to create, or enable the creation or - * redistribution of, unlawful or unlicensed copies of an Apple operating - * system, or to circumvent, violate, or enable the circumvention or - * violation of, any terms of an Apple operating system software license - * agreement. - * - * Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and * limitations under the License. - * - * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ @@ -143,7 +141,8 @@ extern void pmap_startup( * use remaining physical pages * to allocate page frames. */ -extern void pmap_init(void); /* Initialization, +extern void pmap_init(void); + /* Initialization, * after kernel runs * in virtual memory. */ @@ -170,6 +169,7 @@ extern void mapping_free_prime(void); /* Primes the mapping block release list */ extern boolean_t pmap_next_page(ppnum_t *pnum); +extern boolean_t pmap_next_page_hi(ppnum_t *pnum); /* During VM initialization, * return the next unused * physical page. @@ -186,7 +186,10 @@ extern void pmap_virtual_space( /* * Routines to manage the physical map data structure. */ -extern pmap_t pmap_create(vm_map_size_t size); /* Create a pmap_t. */ +extern pmap_t pmap_create( /* Create a pmap_t. */ + ledger_t ledger, + vm_map_size_t size, + __unused boolean_t is_64bit); extern pmap_t (pmap_kernel)(void); /* Return the kernel's pmap */ extern void pmap_reference(pmap_t pmap); /* Gain a reference. */ extern void pmap_destroy(pmap_t pmap); /* Release a reference. */ @@ -198,9 +201,21 @@ extern void pmap_enter( /* Enter a mapping */ vm_map_offset_t v, ppnum_t pn, vm_prot_t prot, + vm_prot_t fault_type, unsigned int flags, boolean_t wired); +extern kern_return_t pmap_enter_options( + pmap_t pmap, + vm_map_offset_t v, + ppnum_t pn, + vm_prot_t prot, + vm_prot_t fault_type, + unsigned int flags, + boolean_t wired, + unsigned int options, + void *arg); + extern void pmap_remove_some_phys( pmap_t pmap, ppnum_t pn); @@ -214,6 +229,12 @@ extern void pmap_page_protect( /* Restrict access to page. */ ppnum_t phys, vm_prot_t prot); +extern void pmap_page_protect_options( /* Restrict access to page. */ + ppnum_t phys, + vm_prot_t prot, + unsigned int options, + void *arg); + extern void (pmap_zero_page)( ppnum_t pn); @@ -248,6 +269,11 @@ extern void (pmap_copy_part_rpage)( extern unsigned int (pmap_disconnect)( /* disconnect mappings and return reference and change */ ppnum_t phys); +extern unsigned int (pmap_disconnect_options)( /* disconnect mappings and return reference and change */ + ppnum_t phys, + unsigned int options, + void *arg); + extern kern_return_t (pmap_attribute_cache_sync)( /* Flush appropriate * cache based on * page number sent */ @@ -256,6 +282,18 @@ extern kern_return_t (pmap_attribute_cache_sync)( /* Flush appropriate vm_machine_attribute_t attribute, vm_machine_attribute_val_t* value); +extern unsigned int (pmap_cache_attributes)( + ppnum_t pn); + +/* + * Set (override) cache attributes for the specified physical page + */ +extern void pmap_set_cache_attributes( + ppnum_t, + unsigned int); +extern void pmap_sync_page_data_phys(ppnum_t pa); +extern void pmap_sync_page_attributes_phys(ppnum_t pa); + /* * debug/assertions. pmap_verify_free returns true iff * the given physical page is mapped into no pmap. @@ -266,13 +304,15 @@ extern boolean_t pmap_verify_free(ppnum_t pn); * Statistics routines */ extern int (pmap_resident_count)(pmap_t pmap); +extern int (pmap_resident_max)(pmap_t pmap); /* * Sundry required (internal) routines */ +#ifdef CURRENTLY_UNUSED_AND_UNTESTED extern void pmap_collect(pmap_t pmap);/* Perform garbage * collection, if any */ - +#endif /* * Optional routines */ @@ -345,28 +385,108 @@ extern kern_return_t (pmap_attribute)( /* Get/Set special memory /* * Macro to be used in place of pmap_enter() */ -#define PMAP_ENTER(pmap, virtual_address, page, protection, flags, wired) \ +#define PMAP_ENTER(pmap, virtual_address, page, protection, fault_type, flags, wired) \ MACRO_BEGIN \ pmap_t __pmap = (pmap); \ vm_page_t __page = (page); \ + int __options = 0; \ \ - if (__pmap != kernel_pmap) { \ - ASSERT_PAGE_DECRYPTED(__page); \ + PMAP_ENTER_CHECK(__pmap, __page) \ + if (__page->object->internal) { \ + __options |= PMAP_OPTIONS_INTERNAL; \ } \ - pmap_enter(__pmap, \ - (virtual_address), \ - __page->phys_page, \ - (protection) & ~__page->page_lock, \ - (flags), \ - (wired)); \ + if (__page->reusable || __page->object->all_reusable) { \ + __options |= PMAP_OPTIONS_REUSABLE; \ + } \ + (void) pmap_enter_options(__pmap, \ + (virtual_address), \ + __page->phys_page, \ + (protection), \ + (fault_type), \ + (flags), \ + (wired), \ + __options, \ + NULL); \ MACRO_END #endif /* !PMAP_ENTER */ +#ifndef PMAP_ENTER_OPTIONS +#define PMAP_ENTER_OPTIONS(pmap, virtual_address, page, protection, \ + fault_type, flags, wired, options, result) \ + MACRO_BEGIN \ + pmap_t __pmap = (pmap); \ + vm_page_t __page = (page); \ + int __extra_options = 0; \ + \ + PMAP_ENTER_CHECK(__pmap, __page) \ + if (__page->object->internal) { \ + __extra_options |= PMAP_OPTIONS_INTERNAL; \ + } \ + if (__page->reusable || __page->object->all_reusable) { \ + __extra_options |= PMAP_OPTIONS_REUSABLE; \ + } \ + result = pmap_enter_options(__pmap, \ + (virtual_address), \ + __page->phys_page, \ + (protection), \ + (fault_type), \ + (flags), \ + (wired), \ + (options) | __extra_options, \ + NULL); \ + MACRO_END +#endif /* !PMAP_ENTER_OPTIONS */ + +#ifndef PMAP_SET_CACHE_ATTR +#define PMAP_SET_CACHE_ATTR(mem, object, cache_attr, batch_pmap_op) \ + MACRO_BEGIN \ + if (!batch_pmap_op) { \ + pmap_set_cache_attributes(mem->phys_page, cache_attr); \ + object->set_cache_attr = TRUE; \ + } \ + MACRO_END +#endif /* PMAP_SET_CACHE_ATTR */ + +#ifndef PMAP_BATCH_SET_CACHE_ATTR +#define PMAP_BATCH_SET_CACHE_ATTR(object, user_page_list, \ + cache_attr, num_pages, batch_pmap_op) \ + MACRO_BEGIN \ + if ((batch_pmap_op)) { \ + unsigned int __page_idx=0; \ + while (__page_idx < (num_pages)) { \ + pmap_set_cache_attributes( \ + user_page_list[__page_idx].phys_addr, \ + (cache_attr)); \ + __page_idx++; \ + } \ + (object)->set_cache_attr = TRUE; \ + } \ + MACRO_END +#endif /* PMAP_BATCH_SET_CACHE_ATTR */ + +#define PMAP_ENTER_CHECK(pmap, page) \ +{ \ + if ((pmap) != kernel_pmap) { \ + ASSERT_PAGE_DECRYPTED(page); \ + } \ + if ((page)->error) { \ + panic("VM page %p should not have an error\n", \ + (page)); \ + } \ +} + /* * Routines to manage reference/modify bits based on * physical addresses, simulating them if not provided * by the hardware. */ +struct pfc { + long pfc_cpus; + long pfc_invalid_global; +}; + +typedef struct pfc pmap_flush_context; + /* Clear reference bit */ extern void pmap_clear_reference(ppnum_t pn); /* Return reference bit */ @@ -383,6 +503,11 @@ extern unsigned int pmap_get_refmod(ppnum_t pn); extern void pmap_clear_refmod(ppnum_t pn, unsigned int mask); #define VM_MEM_MODIFIED 0x01 /* Modified bit */ #define VM_MEM_REFERENCED 0x02 /* Referenced bit */ +extern void pmap_clear_refmod_options(ppnum_t pn, unsigned int mask, unsigned int options, void *); + + +extern void pmap_flush_context_init(pmap_flush_context *); +extern void pmap_flush(pmap_flush_context *); /* * Routines that operate on ranges of virtual addresses. @@ -393,14 +518,39 @@ extern void pmap_protect( /* Change protections. */ vm_map_offset_t e, vm_prot_t prot); +extern void pmap_protect_options( /* Change protections. */ + pmap_t map, + vm_map_offset_t s, + vm_map_offset_t e, + vm_prot_t prot, + unsigned int options, + void *arg); + extern void (pmap_pageable)( pmap_t pmap, vm_map_offset_t start, vm_map_offset_t end, boolean_t pageable); + +extern uint64_t pmap_nesting_size_min; +extern uint64_t pmap_nesting_size_max; + +extern kern_return_t pmap_nest(pmap_t, + pmap_t, + addr64_t, + addr64_t, + uint64_t); +extern kern_return_t pmap_unnest(pmap_t, + addr64_t, + uint64_t); +extern boolean_t pmap_adjust_unnest_parameters(pmap_t, vm_map_offset_t *, vm_map_offset_t *); #endif /* MACH_KERNEL_PRIVATE */ +extern boolean_t pmap_is_noencrypt(ppnum_t); +extern void pmap_set_noencrypt(ppnum_t pn); +extern void pmap_clear_noencrypt(ppnum_t pn); + /* * JMM - This portion is exported to other kernel components right now, * but will be pulled back in the future when the needed functionality @@ -417,17 +567,30 @@ extern pmap_t kernel_pmap; /* The kernel's map */ #define VM_MEM_NOT_CACHEABLE 0x4 /* (I) Cache Inhibit */ #define VM_MEM_WRITE_THROUGH 0x8 /* (W) Write-Through */ +#define VM_WIMG_USE_DEFAULT 0x80 #define VM_WIMG_MASK 0xFF -#define VM_WIMG_USE_DEFAULT 0x80000000 -extern void pmap_modify_pages( /* Set modify bit for pages */ - pmap_t map, - vm_map_offset_t s, - vm_map_offset_t e); +#define VM_MEM_SUPERPAGE 0x100 /* map a superpage instead of a base page */ +#define VM_MEM_STACK 0x200 +#define PMAP_OPTIONS_NOWAIT 0x1 /* don't block, return + * KERN_RESOURCE_SHORTAGE + * instead */ +#define PMAP_OPTIONS_NOENTER 0x2 /* expand pmap if needed + * but don't enter mapping + */ +#define PMAP_OPTIONS_COMPRESSOR 0x4 /* credit the compressor for + * this operation */ +#define PMAP_OPTIONS_INTERNAL 0x8 /* page from internal object */ +#define PMAP_OPTIONS_REUSABLE 0x10 /* page is "reusable" */ +#define PMAP_OPTIONS_NOFLUSH 0x20 /* delay flushing of pmap */ +#define PMAP_OPTIONS_NOREFMOD 0x40 /* don't need ref/mod on disconnect */ +#define PMAP_OPTIONS_REMOVE 0x100 /* removing a mapping */ + +#if !defined(__LP64__) extern vm_offset_t pmap_extract(pmap_t pmap, vm_map_offset_t va); - +#endif extern void pmap_change_wiring( /* Specify pageability */ pmap_t pmap, vm_map_offset_t va, @@ -436,9 +599,33 @@ extern void pmap_change_wiring( /* Specify pageability */ /* LP64todo - switch to vm_map_offset_t when it grows */ extern void pmap_remove( /* Remove mappings. */ pmap_t map, - addr64_t s, - addr64_t e); + vm_map_offset_t s, + vm_map_offset_t e); + +extern void pmap_remove_options( /* Remove mappings. */ + pmap_t map, + vm_map_offset_t s, + vm_map_offset_t e, + int options); + +extern void pmap_reusable( + pmap_t map, + vm_map_offset_t s, + vm_map_offset_t e, + boolean_t reusable); + +extern void fillPage(ppnum_t pa, unsigned int fill); + +extern void pmap_map_sharedpage(task_t task, pmap_t pmap); +extern void pmap_unmap_sharedpage(pmap_t pmap); + +#if defined(__LP64__) +void pmap_pre_expand(pmap_t pmap, vm_map_offset_t vaddr); +#endif +unsigned int pmap_query_resident(pmap_t pmap, + vm_map_offset_t s, + vm_map_offset_t e); #endif /* KERNEL_PRIVATE */