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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22133 a95241bf-73f2-0310-859d-f6bbb57e9c96
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/* Realtek RTL8169 Family Driver
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* Copyright (C) 2004 Marcus Overhagen <marcus@overhagen.de>. All rights reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation for any purpose and without fee is hereby granted, provided
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* that the above copyright notice appear in all copies, and that both the
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* copyright notice and this permission notice appear in supporting documentation.
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*
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* Marcus Overhagen makes no representations about the suitability of this software
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* for any purpose. It is provided "as is" without express or implied warranty.
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*
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* MARCUS OVERHAGEN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL MARCUS
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* OVERHAGEN BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
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* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <Errors.h>
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#include <OS.h>
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#include <string.h>
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//#define DEBUG
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#include "debug.h"
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#include "util.h"
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static inline uint32
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round_to_pagesize(uint32 size)
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{
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return (size + B_PAGE_SIZE - 1) & ~(B_PAGE_SIZE - 1);
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}
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area_id
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alloc_mem(void **virt, void **phy, size_t size, uint32 protection, const char *name)
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{
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physical_entry pe;
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void * virtadr;
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area_id areaid;
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status_t rv;
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TRACE("allocating %ld bytes for %s\n", size, name);
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size = round_to_pagesize(size);
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areaid = create_area(name, &virtadr, B_ANY_KERNEL_ADDRESS, size, B_FULL_LOCK | B_CONTIGUOUS, protection);
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if (areaid < B_OK) {
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ERROR("couldn't allocate area %s\n", name);
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return B_ERROR;
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}
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rv = get_memory_map(virtadr, size, &pe, 1);
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if (rv < B_OK) {
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delete_area(areaid);
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ERROR("couldn't get mapping for %s\n", name);
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return B_ERROR;
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}
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memset(virtadr, 0, size);
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if (virt)
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*virt = virtadr;
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if (phy)
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*phy = pe.address;
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TRACE("area = %ld, size = %ld, virt = %p, phy = %p\n", areaid, size, virtadr, pe.address);
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return areaid;
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}
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area_id
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map_mem(void **virt, void *phy, size_t size, uint32 protection, const char *name)
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{
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uint32 offset;
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void *phyadr;
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void *mapadr;
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area_id area;
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TRACE("mapping physical address %p with %ld bytes for %s\n", phy, size, name);
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offset = (uint32)phy & (B_PAGE_SIZE - 1);
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phyadr = (char *)phy - offset;
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size = round_to_pagesize(size + offset);
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area = map_physical_memory(name, phyadr, size, B_ANY_KERNEL_BLOCK_ADDRESS, protection, &mapadr);
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if (area < B_OK) {
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ERROR("mapping '%s' failed, error 0x%lx (%s)\n", name, area, strerror(area));
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return area;
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}
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*virt = (char *)mapadr + offset;
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TRACE("physical = %p, virtual = %p, offset = %ld, phyadr = %p, mapadr = %p, size = %ld, area = 0x%08lx\n",
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phy, *virt, offset, phyadr, mapadr, size, area);
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return area;
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}
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@ -0,0 +1,27 @@
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/* Realtek RTL8169 Family Driver
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* Copyright (C) 2004 Marcus Overhagen <marcus@overhagen.de>. All rights reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation for any purpose and without fee is hereby granted, provided
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* that the above copyright notice appear in all copies, and that both the
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* copyright notice and this permission notice appear in supporting documentation.
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*
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* Marcus Overhagen makes no representations about the suitability of this software
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* for any purpose. It is provided "as is" without express or implied warranty.
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*
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* MARCUS OVERHAGEN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL MARCUS
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* OVERHAGEN BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
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* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef __UTIL_H
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#define __UTIL_H
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#include <OS.h>
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area_id alloc_mem(void **virt, void **phy, size_t size, uint32 protection, const char *name);
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area_id map_mem(void **virt, void *phy, size_t size, uint32 protection, const char *name);
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#endif
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