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224 lines
7.1 KiB
C
224 lines
7.1 KiB
C
/*
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* Copyright © 1999 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $XFree86: xc/programs/Xserver/hw/tinyx/txmap.c,v 1.3 2005/01/31 04:32:48 dawes Exp $ */
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/*
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* Copyright (c) 2004, 2005 by The XFree86 Project, Inc.
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject
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* to the following conditions:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution, and in the same place and form as other copyright,
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* license and disclaimer information.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment: "This product
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* includes software developed by The XFree86 Project, Inc
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* (http://www.xfree86.org/) and its contributors", in the same
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* place and form as other third-party acknowledgments. Alternately,
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* this acknowledgment may appear in the software itself, in the
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* same form and location as other such third-party acknowledgments.
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*
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* 4. Except as contained in this notice, the name of The XFree86
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* Project, Inc shall not be used in advertising or otherwise to
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* promote the sale, use or other dealings in this Software without
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* prior written authorization from The XFree86 Project, Inc.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE XFREE86 PROJECT, INC OR ITS CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tinyx.h"
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#include <errno.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#ifdef HAS_MTRR
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#include <asm/mtrr.h>
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#endif
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#include <sys/ioctl.h>
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void *
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KdMapDevice (CARD32 addr, CARD32 size)
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{
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#ifdef WINDOWS
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void *a;
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void *d;
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d = VirtualAlloc (NULL, size, MEM_RESERVE, PAGE_NOACCESS);
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if (!d)
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return NULL;
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DRAW_DEBUG ((DEBUG_S3INIT, "Virtual address of 0x%x is 0x%x", addr, d));
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a = VirtualCopyAddr (addr);
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DRAW_DEBUG ((DEBUG_S3INIT, "Translated address is 0x%x", a));
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if (!VirtualCopy (d, a, size,
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PAGE_READWRITE|PAGE_NOCACHE|PAGE_PHYSICAL))
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{
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DRAW_DEBUG ((DEBUG_FAILURE, "VirtualCopy failed %d",
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GetLastError ()));
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return NULL;
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}
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DRAW_DEBUG ((DEBUG_S3INIT, "Device mapped successfully"));
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return d;
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#endif
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#ifdef linux
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void *a;
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int fd;
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#ifdef __arm__
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fd = open ("/dev/mem", O_RDWR|O_SYNC);
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#else
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fd = open ("/dev/mem", O_RDWR);
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#endif
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if (fd < 0)
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FatalError ("KdMapDevice: failed to open /dev/mem (%s)\n",
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strerror (errno));
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a = mmap ((caddr_t) 0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, addr);
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close (fd);
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if ((long) a == -1)
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FatalError ("KdMapDevice: failed to map frame buffer (%s)\n",
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strerror (errno));
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return a;
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#endif
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#ifdef VXWORKS
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return (void *) addr;
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#endif
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}
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void
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KdUnmapDevice (void *addr, CARD32 size)
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{
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#ifdef WINDOWS
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VirtualFree (addr, size, MEM_DECOMMIT);
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VirtualFree (addr, 0, MEM_RELEASE);
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#endif
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#ifdef linux
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munmap (addr, size);
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#endif
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#ifdef VXWORKS
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;
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#endif
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}
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#if defined(HAS_MTRR) && \
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(defined(MTRRIOC_ADD_ENTRY) || defined(MTRRIOC_DEL_ENTRY))
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static int mtrr;
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#endif
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void
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KdSetMappedMode (CARD32 addr, CARD32 size, int mode)
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{
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#if defined(HAS_MTRR) && defined(MTRRIOC_ADD_ENTRY)
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struct mtrr_sentry sentry;
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unsigned long base, bound;
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unsigned int type;
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if (addr < 0x100000)
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return;
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if (!mtrr)
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mtrr = open ("/proc/mtrr", 2);
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if (mtrr > 0)
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{
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base = addr & ~((1<<22)-1);
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bound = ((addr + size) + ((1<<22) - 1)) & ~((1<<22) - 1);
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switch (mode) {
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case KD_MAPPED_MODE_REGISTERS:
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type = MTRR_TYPE_UNCACHABLE;
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break;
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case KD_MAPPED_MODE_FRAMEBUFFER:
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type = MTRR_TYPE_WRCOMB;
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break;
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default:
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type = MTRR_TYPE_UNCACHABLE;
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break;
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}
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sentry.base = base;
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sentry.size = bound - base;
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sentry.type = type;
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if (ioctl (mtrr, MTRRIOC_ADD_ENTRY, &sentry) < 0)
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ErrorF ("MTRRIOC_ADD_ENTRY failed 0x%lx 0x%lx %d (errno %d)\n",
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base, bound - base, type, errno);
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}
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#endif
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}
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void
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KdResetMappedMode (CARD32 addr, CARD32 size, int mode)
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{
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#if defined(HAS_MTRR) && defined(MTRRIOC_DEL_ENTRY)
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struct mtrr_sentry sentry;
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unsigned long base, bound;
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unsigned int type;
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if (addr < 0x100000)
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return;
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if (!mtrr)
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mtrr = open ("/proc/mtrr", 2);
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if (mtrr > 0)
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{
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base = addr & ~((1<<22)-1);
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bound = ((addr + size) + ((1<<22) - 1)) & ~((1<<22) - 1);
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switch (mode) {
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case KD_MAPPED_MODE_REGISTERS:
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type = MTRR_TYPE_UNCACHABLE;
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break;
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case KD_MAPPED_MODE_FRAMEBUFFER:
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type = MTRR_TYPE_WRCOMB;
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break;
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default:
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type = MTRR_TYPE_UNCACHABLE;
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break;
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}
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sentry.base = base;
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sentry.size = bound - base;
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sentry.type = type;
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if (ioctl (mtrr, MTRRIOC_DEL_ENTRY, &sentry) < 0)
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ErrorF ("MTRRIOC_DEL_ENTRY failed 0x%lx 0x%lx %d (errno %d)\n",
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base, bound - base, type, errno);
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}
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#endif
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}
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