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