| 1 | /*
|
|---|
| 2 | * Copyright (C) 2005 Martin Decky
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup ppc32mm
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #include <genarch/mm/page_pt.h>
|
|---|
| 36 | #include <mm/frame.h>
|
|---|
| 37 | #include <mm/as.h>
|
|---|
| 38 | #include <align.h>
|
|---|
| 39 | #include <config.h>
|
|---|
| 40 |
|
|---|
| 41 | void page_arch_init(void)
|
|---|
| 42 | {
|
|---|
| 43 | if (config.cpu_active == 1)
|
|---|
| 44 | page_mapping_operations = &pt_mapping_operations;
|
|---|
| 45 | }
|
|---|
| 46 |
|
|---|
| 47 |
|
|---|
| 48 | uintptr_t hw_map(uintptr_t physaddr, size_t size)
|
|---|
| 49 | {
|
|---|
| 50 | if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
|
|---|
| 51 | panic("Unable to map physical memory %p (%d bytes)", physaddr, size)
|
|---|
| 52 |
|
|---|
| 53 | uintptr_t virtaddr = PA2KA(last_frame);
|
|---|
| 54 | pfn_t i;
|
|---|
| 55 | for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)
|
|---|
| 56 | page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE);
|
|---|
| 57 |
|
|---|
| 58 | last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);
|
|---|
| 59 |
|
|---|
| 60 | return virtaddr;
|
|---|
| 61 | }
|
|---|
| 62 |
|
|---|
| 63 | /** @}
|
|---|
| 64 | */
|
|---|
