X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..15129b1c8dbb3650c63b70adb1cad9af601c6c17:/osfmk/vm/device_vm.c diff --git a/osfmk/vm/device_vm.c b/osfmk/vm/device_vm.c index a6636ce12..f3df12b70 100644 --- a/osfmk/vm/device_vm.c +++ b/osfmk/vm/device_vm.c @@ -1,16 +1,19 @@ /* - * Copyright (c) 2000-2001 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. + * @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. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. + * 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 @@ -20,24 +23,32 @@ * Please see the License for the specific language governing rights and * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include -#include + #include -#include -#include -#include #include +#include #include #include #include +#include +#include +#include +#include +#include #include #include -#include #include +#include #include +#include +#include +#include +#include + /* Device VM COMPONENT INTERFACES */ @@ -52,13 +63,30 @@ /* until component support available */ -int device_pager_workaround; - -typedef int device_port_t; +const struct memory_object_pager_ops device_pager_ops = { + device_pager_reference, + device_pager_deallocate, + device_pager_init, + device_pager_terminate, + device_pager_data_request, + device_pager_data_return, + device_pager_data_initialize, + device_pager_data_unlock, + device_pager_synchronize, + device_pager_map, + device_pager_last_unmap, + NULL, /* data_reclaim */ + "device pager" +}; + +typedef uintptr_t device_port_t; +/* + * The start of "struct device_pager" MUST match a "struct memory_object". + */ typedef struct device_pager { - int *pager; /* pager workaround pointer */ - unsigned int pager_ikot; /* fake ip_kotype() */ + struct ipc_object_header pager_header; /* fake ip_kotype() */ + memory_object_pager_ops_t pager_ops; /* == &device_pager_ops */ unsigned int ref_count; /* reference count */ memory_object_control_t control_handle; /* mem object's cntrl handle */ device_port_t device_handle; /* device_handle */ @@ -66,84 +94,15 @@ typedef struct device_pager { int flags; } *device_pager_t; +#define pager_ikot pager_header.io_bits -void -device_pager_bootstrap( - void); - - -memory_object_t -device_pager_setup( - memory_object_t, - int, - vm_size_t, - int); - device_pager_t -device_pager_lookup( - memory_object_t); - -kern_return_t -device_pager_init( - memory_object_t, - memory_object_control_t, - vm_size_t); - - -kern_return_t -device_pager_data_request( - memory_object_t, - memory_object_offset_t, - vm_size_t, - vm_prot_t); - -kern_return_t -device_pager_data_return( - memory_object_t, - memory_object_offset_t, - vm_size_t, - boolean_t, - boolean_t); - -void -device_pager_reference( - memory_object_t); - -void -device_pager_deallocate( - memory_object_t); - -kern_return_t -device_pager_data_initialize( - memory_object_t, - memory_object_offset_t, - vm_size_t); - -kern_return_t -device_pager_data_unlock( - memory_object_t, - memory_object_offset_t, - vm_size_t, - vm_prot_t); - -kern_return_t -device_pager_terminate( - memory_object_t); - -kern_return_t -device_pager_synchronize( - memory_object_t, - memory_object_offset_t, - vm_offset_t, - vm_sync_t); - -kern_return_t -device_pager_unmap( +device_pager_lookup( /* forward */ memory_object_t); device_pager_t -device_object_create(void); +device_object_create(void); /* forward */ zone_t device_pager_zone; @@ -168,7 +127,7 @@ device_pager_bootstrap(void) size = (vm_size_t) sizeof(struct device_pager); device_pager_zone = zinit(size, (vm_size_t) MAX_DNODE*size, PAGE_SIZE, "device node pager structures"); - + zone_change(device_pager_zone, Z_CALLERACCT, FALSE); return; } @@ -177,8 +136,8 @@ device_pager_bootstrap(void) */ memory_object_t device_pager_setup( - memory_object_t device, - int device_handle, + __unused memory_object_t device, + uintptr_t device_handle, vm_size_t size, int flags) { @@ -202,14 +161,13 @@ kern_return_t device_pager_populate_object( memory_object_t device, memory_object_offset_t offset, - vm_offset_t phys_addr, + ppnum_t page_num, vm_size_t size) { device_pager_t device_object; vm_object_t vm_object; kern_return_t kr; upl_t upl; - ipc_port_t previous; device_object = device_pager_lookup(device); if(device_object == DEVICE_PAGER_NULL) @@ -221,20 +179,22 @@ device_pager_populate_object( return KERN_FAILURE; kr = vm_object_populate_with_private( - vm_object, offset, phys_addr, size); + vm_object, offset, page_num, size); if(kr != KERN_SUCCESS) return kr; if(!vm_object->phys_contiguous) { - int null_size = 0; + unsigned int null_size = 0; + assert((upl_size_t) size == size); kr = vm_object_upl_request(vm_object, - (vm_object_offset_t)offset, size, &upl, NULL, - &null_size, (UPL_NO_SYNC | UPL_CLEAN_IN_PLACE)); - + (vm_object_offset_t)offset, + (upl_size_t) size, &upl, NULL, + &null_size, + (UPL_NO_SYNC | UPL_CLEAN_IN_PLACE)); if(kr != KERN_SUCCESS) panic("device_pager_populate_object: list_req failed"); - upl_commit(upl, NULL); + upl_commit(upl, NULL, 0); upl_deallocate(upl); } @@ -252,7 +212,7 @@ device_pager_lookup( device_pager_t device_object; device_object = (device_pager_t)name; - assert(device_object->pager == &device_pager_workaround); + assert(device_object->pager_ops == &device_pager_ops); return (device_object); } @@ -260,9 +220,10 @@ device_pager_lookup( * */ kern_return_t -device_pager_init(memory_object_t mem_obj, - memory_object_control_t control, - vm_size_t pg_size) +device_pager_init( + memory_object_t mem_obj, + memory_object_control_t control, + __unused memory_object_cluster_size_t pg_size) { device_pager_t device_object; kern_return_t kr; @@ -315,13 +276,17 @@ device_pager_init(memory_object_t mem_obj, /* * */ +/*ARGSUSED6*/ kern_return_t device_pager_data_return( - memory_object_t mem_obj, - memory_object_offset_t offset, - vm_size_t data_cnt, - boolean_t dirty, - boolean_t kernel_copy) + memory_object_t mem_obj, + memory_object_offset_t offset, + memory_object_cluster_size_t data_cnt, + __unused memory_object_offset_t *resid_offset, + __unused int *io_error, + __unused boolean_t dirty, + __unused boolean_t kernel_copy, + __unused int upl_flags) { device_pager_t device_object; @@ -329,8 +294,10 @@ device_pager_data_return( if (device_object == DEVICE_PAGER_NULL) panic("device_pager_data_return: lookup failed"); - return device_data_action(device_object->device_handle, device_object, - VM_PROT_READ | VM_PROT_WRITE, offset, data_cnt); + return device_data_action(device_object->device_handle, + (ipc_port_t) device_object, + VM_PROT_READ | VM_PROT_WRITE, + offset, data_cnt); } /* @@ -340,8 +307,9 @@ kern_return_t device_pager_data_request( memory_object_t mem_obj, memory_object_offset_t offset, - vm_size_t length, - vm_prot_t protection_required) + memory_object_cluster_size_t length, + __unused vm_prot_t protection_required, + __unused memory_object_fault_info_t fault_info) { device_pager_t device_object; @@ -350,8 +318,9 @@ device_pager_data_request( if (device_object == DEVICE_PAGER_NULL) panic("device_pager_data_request: lookup failed"); - device_data_action(device_object->device_handle, device_object, - VM_PROT_READ, offset, length); + device_data_action(device_object->device_handle, + (ipc_port_t) device_object, + VM_PROT_READ, offset, length); return KERN_SUCCESS; } @@ -377,40 +346,58 @@ void device_pager_deallocate( memory_object_t mem_obj) { - device_pager_t device_object; + device_pager_t device_object; + memory_object_control_t device_control; device_object = device_pager_lookup(mem_obj); if (hw_atomic_sub(&device_object->ref_count, 1) == 0) { if (device_object->device_handle != (device_port_t) NULL) { device_close(device_object->device_handle); + device_object->device_handle = (device_port_t) NULL; } - zfree(device_pager_zone, (vm_offset_t) device_object); + device_control = device_object->control_handle; + if (device_control != MEMORY_OBJECT_CONTROL_NULL) { + /* + * The VM object should already have been disconnected + * from the pager at this point. + * We still have to release the "memory object control" + * handle. + */ + assert(device_control->moc_object == VM_OBJECT_NULL); + memory_object_control_deallocate(device_control); + device_object->control_handle = + MEMORY_OBJECT_CONTROL_NULL; + } + + zfree(device_pager_zone, device_object); } return; } kern_return_t device_pager_data_initialize( - memory_object_t mem_obj, - memory_object_offset_t offset, - vm_size_t data_cnt) + __unused memory_object_t mem_obj, + __unused memory_object_offset_t offset, + __unused memory_object_cluster_size_t data_cnt) { + panic("device_pager_data_initialize"); return KERN_FAILURE; } kern_return_t device_pager_data_unlock( - memory_object_t mem_obj, - memory_object_offset_t offset, - vm_size_t size, - vm_prot_t desired_access) + __unused memory_object_t mem_obj, + __unused memory_object_offset_t offset, + __unused memory_object_size_t size, + __unused vm_prot_t desired_access) { return KERN_FAILURE; } +kern_return_t device_pager_terminate( - memory_object_t mem_obj) + __unused memory_object_t mem_obj) { return KERN_SUCCESS; } @@ -424,8 +411,8 @@ kern_return_t device_pager_synchronize( memory_object_t mem_obj, memory_object_offset_t offset, - vm_offset_t length, - vm_sync_t sync_flags) + memory_object_size_t length, + __unused vm_sync_t sync_flags) { device_pager_t device_object; @@ -441,8 +428,16 @@ device_pager_synchronize( * */ kern_return_t -device_pager_unmap( - memory_object_t mem_obj) +device_pager_map( + __unused memory_object_t mem_obj, + __unused vm_prot_t prot) +{ + return KERN_SUCCESS; +} + +kern_return_t +device_pager_last_unmap( + __unused memory_object_t mem_obj) { return KERN_SUCCESS; } @@ -453,14 +448,14 @@ device_pager_unmap( * */ device_pager_t -device_object_create() +device_object_create(void) { register device_pager_t device_object; device_object = (struct device_pager *) zalloc(device_pager_zone); if (device_object == DEVICE_PAGER_NULL) return(DEVICE_PAGER_NULL); - device_object->pager = &device_pager_workaround; + device_object->pager_ops = &device_pager_ops; device_object->pager_ikot = IKOT_MEMORY_OBJECT; device_object->ref_count = 1; device_object->control_handle = MEMORY_OBJECT_CONTROL_NULL;