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sys/arm64/include/devmap.h
- This file was added.
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /*- | |||||
| * Copyright (c) 2013 Ian Lepore <ian@freebsd.org> | |||||
| * All rights reserved. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. 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. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #ifndef _MACHINE_DEVMAP_H_ | |||||
| #define _MACHINE_DEVMAP_H_ | |||||
| /* | |||||
| * This structure is used by MD code to describe static mappings of devices | |||||
| * which are established as part of bringing up the MMU early in the boot. | |||||
| */ | |||||
| struct arm_devmap_entry { | |||||
| vm_offset_t pd_va; /* virtual address */ | |||||
| vm_paddr_t pd_pa; /* physical address */ | |||||
| vm_size_t pd_size; /* size of region */ | |||||
| vm_prot_t pd_prot; /* protection code */ | |||||
| int pd_cache; /* cache attributes */ | |||||
| }; | |||||
| /* | |||||
| * Return the lowest KVA address used in any entry in the registered devmap | |||||
| * table. This works with whatever table is registered, including the internal | |||||
| * table used by arm_devmap_add_entry() if that routine was used. Platforms can | |||||
| * implement initarm_lastaddr() by calling this if static device mappings are | |||||
| * their only use of high KVA space. | |||||
| */ | |||||
| vm_offset_t arm_devmap_lastaddr(void); | |||||
| /* | |||||
| * Automatically allocate KVA (from the top of the address space downwards) and | |||||
| * make static device mapping entries in an internal table. The internal table | |||||
| * is automatically registered on the first call to this. | |||||
| */ | |||||
| void arm_devmap_add_entry(vm_paddr_t pa, vm_size_t sz); | |||||
| /* | |||||
| * Register a platform-local table to be bootstrapped by the generic | |||||
| * initarm() in arm/machdep.c. This is used by newer code that allocates and | |||||
| * fills in its own local table but does not have its own initarm() routine. | |||||
| */ | |||||
| void arm_devmap_register_table(const struct arm_devmap_entry * _table); | |||||
| /* | |||||
| * Establish mappings for all the entries in the table. This is called | |||||
| * automatically from the common initarm() in arm/machdep.c, and also from the | |||||
| * custom initarm() routines in older code. If the table pointer is NULL, this | |||||
| * will use the table installed previously by arm_devmap_register_table(). | |||||
| */ | |||||
| void arm_devmap_bootstrap(vm_offset_t _l1pt, | |||||
| const struct arm_devmap_entry *_table); | |||||
| /* | |||||
| * Translate between virtual and physical addresses within a region that is | |||||
| * static-mapped by the devmap code. If the given address range isn't | |||||
| * static-mapped, then ptov returns NULL and vtop returns DEVMAP_PADDR_NOTFOUND. | |||||
| * The latter implies that you can't vtop just the last byte of physical address | |||||
| * space. This is not as limiting as it might sound, because even if a device | |||||
| * occupies the end of the physical address space, you're only prevented from | |||||
| * doing vtop for that single byte. If you vtop a size bigger than 1 it works. | |||||
| */ | |||||
| #define DEVMAP_PADDR_NOTFOUND ((vm_paddr_t)(-1)) | |||||
| void * arm_devmap_ptov(vm_paddr_t _pa, vm_size_t _sz); | |||||
| vm_paddr_t arm_devmap_vtop(void * _va, vm_size_t _sz); | |||||
| /* Print the static mapping table; used for bootverbose output. */ | |||||
| void arm_devmap_print_table(void); | |||||
| #endif | |||||