0,0 → 1,78 |
/* |
* Copyright (C) 2005 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. |
*/ |
|
#include <arch/mm/page.h> |
#include <arch/mm/tlb.h> |
#include <genarch/mm/page_ht.h> |
#include <mm/frame.h> |
#include <bitops.h> |
#include <debug.h> |
|
void page_arch_init(void) |
{ |
page_mapping_operations = &ht_mapping_operations; |
} |
|
__address hw_map(__address physaddr, size_t size) |
{ |
unsigned int order; |
int i; |
|
struct { |
int pagesize; |
size_t increment; |
count_t count; |
} sizemap[] = { |
{ PAGESIZE_8K, 0, 1 }, /* 8K */ |
{ PAGESIZE_8K, PAGE_SIZE, 2 }, /* 16K */ |
{ PAGESIZE_8K, PAGE_SIZE, 4 }, /* 32K */ |
{ PAGESIZE_64K, 0, 1}, /* 64K */ |
{ PAGESIZE_64K, 8*PAGE_SIZE, 2 }, /* 128K */ |
{ PAGESIZE_64K, 8*PAGE_SIZE, 4 }, /* 256K */ |
{ PAGESIZE_512K, 0, 1 }, /* 512K */ |
{ PAGESIZE_512K, 64*PAGE_SIZE, 2 }, /* 1M */ |
{ PAGESIZE_512K, 64*PAGE_SIZE, 4 }, /* 2M */ |
{ PAGESIZE_4M, 0, 1 } /* 4M */ |
}; |
|
ASSERT(size <= 4*1024*1024); |
|
if (size <= FRAME_SIZE) |
order = 0; |
else |
order = (fnzb32(size - 1) + 1) - FRAME_WIDTH; |
|
__address virtaddr = PA2KA(PFN2ADDR(frame_alloc(order, FRAME_KA))); |
|
for (i = 0; i < sizemap[order].count; i++) |
dtlb_insert_mapping(virtaddr + i*sizemap[order].increment, |
physaddr + i*sizemap[order].increment, |
sizemap[order].pagesize, true, false); |
|
return virtaddr; |
} |