diff options
Diffstat (limited to 'xorg-server/hw/xfree86/os-support/sysv/sysv_video.c')
| -rw-r--r-- | xorg-server/hw/xfree86/os-support/sysv/sysv_video.c | 630 |
1 files changed, 315 insertions, 315 deletions
diff --git a/xorg-server/hw/xfree86/os-support/sysv/sysv_video.c b/xorg-server/hw/xfree86/os-support/sysv/sysv_video.c index 43c30621c..6d5948796 100644 --- a/xorg-server/hw/xfree86/os-support/sysv/sysv_video.c +++ b/xorg-server/hw/xfree86/os-support/sysv/sysv_video.c @@ -1,315 +1,315 @@ -/* - * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany - * Copyright 1993 by David Wexelblat <dwex@goblin.org> - * - * 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 names of Thomas Roell and David Wexelblat - * not be used in advertising or publicity pertaining to distribution of - * the software without specific, written prior permission. Thomas Roell and - * David Wexelblat makes no representations about the suitability of this - * software for any purpose. It is provided "as is" without express or - * implied warranty. - * - * THOMAS ROELL AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO - * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID WEXELBLAT 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. - * - */ - -#ifdef HAVE_XORG_CONFIG_H -#include <xorg-config.h> -#endif - -#include <X11/X.h> - -#define _NEED_SYSI86 -#include "xf86.h" -#include "xf86Priv.h" -#include "xf86_OSlib.h" -#include "xf86OSpriv.h" - -#ifndef MAP_FAILED -#define MAP_FAILED ((void *)-1) -#endif - -#ifndef SI86IOPL -#define SET_IOPL() sysi86(SI86V86,V86SC_IOPL,PS_IOPL) -#define RESET_IOPL() sysi86(SI86V86,V86SC_IOPL,0) -#else -#define SET_IOPL() sysi86(SI86IOPL,3) -#define RESET_IOPL() sysi86(SI86IOPL,0) -#endif - -/***************************************************************************/ -/* Video Memory Mapping section */ -/***************************************************************************/ - -/* - * XXX Support for SVR3 will need to be reworked if needed. In particular - * the Region parameter is no longer passed, and will need to be dealt - * with internally if required. - * OK, i'll rework that thing ... (clean it up a lot) - * SVR3 Support only with SVR3_MMAPDRV (mr) - * - */ - -#ifdef HAS_SVR3_MMAPDRV -#ifndef MMAP_DEBUG -#define MMAP_DEBUG 3 -#endif - -struct kd_memloc MapDSC; -int mmapFd = -2; - -static int -mmapStat(pointer Base, unsigned long Size) { - - int nmmreg,i=0,region=-1; - mmapinfo_t *ibuf; - - nmmreg = ioctl(mmapFd, GETNMMREG); - - if(nmmreg <= 0) - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "\nNo physical memory mapped currently.\n\n"); - else { - if((ibuf = (mmapinfo_t *)malloc(nmmreg*sizeof(mmapinfo_t))) == NULL) - xf86Msg(X_WARNING, - "Couldn't allocate memory 4 mmapinfo_t\n"); - else { - if(ioctl(mmapFd, GETMMREG, ibuf) != -1) - { - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "# mmapStat: [Size=%x,Base=%x]\n", Size, Base); - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "# Physical Address Size Reference Count\n"); - for(i = 0; i < nmmreg; i++) { - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "%-4d 0x%08X %5dk %5d ", - i, ibuf[i].physaddr, ibuf[i].length/1024, ibuf[i].refcnt); - if (ibuf[i].physaddr == Base || ibuf[i].length == Size ) { - xf86MsgVerb(X_INFO, MMAP_DEBUG,"MATCH !!!"); - if (region==-1) region=i; - } - xf86ErrorFVerb(MMAP_DEBUG, "\n"); - } - xf86ErrorFVerb(MMAP_DEBUG, "\n"); - } - free(ibuf); - } - } - if (region == -1 && nmmreg > 0) region=region * i; - return(region); -} -#endif - - -static Bool -linearVidMem() -{ -#ifdef SVR4 - return TRUE; -#elif defined(HAS_SVR3_MMAPDRV) - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "# xf86LinearVidMem: MMAP 2.2.2 called\n"); - - if(mmapFd >= 0) return TRUE; - - if ((mmapFd = open("/dev/mmap", O_RDWR)) != -1) - { - if(ioctl(mmapFd, GETVERSION) < 0x0222) { - xf86Msg(X_WARNING, - "xf86LinearVidMem: MMAP 2.2.2 or above required\n"); - xf86ErrorF("\tlinear memory access disabled\n"); - return FALSE; - } - return TRUE; - } - xf86Msg(X_WARNING, "xf86LinearVidMem: failed to open /dev/mmap (%s)\n", - strerror(errno)); - xf86ErrorF("\tlinear memory access disabled\n"); - return FALSE; -#endif -} - -static pointer -mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags) -{ - pointer base; - int fd; - -#if defined(SVR4) - fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR); - if (fd < 0) - { - FatalError("xf86MapVidMem: failed to open %s (%s)\n", - DEV_MEM, strerror(errno)); - } - base = mmap((caddr_t)0, Size, - (flags & VIDMEM_READONLY) ? - PROT_READ : (PROT_READ | PROT_WRITE), - MAP_SHARED, fd, (off_t)Base); - close(fd); - if (base == MAP_FAILED) - { - FatalError("%s: Could not mmap framebuffer [s=%x,a=%x] (%s)\n", - "xf86MapVidMem", Size, Base, strerror(errno)); - } -#else /* SVR4 */ -#ifdef HAS_SVR3_MMAPDRV - - xf86MsgVerb(X_INFO, MMAP_DEBUG, "# xf86MapVidMem: MMAP 2.2.2 called\n"); - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "MMAP_VERSION: 0x%x\n",ioctl(mmapFd, GETVERSION)); - if (ioctl(mmapFd, GETVERSION) == -1) - { - xf86LinearVidMem(); - } - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "MMAP_VERSION: 0x%x\n",ioctl(mmapFd, GETVERSION)); - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "xf86MapVidMem: Screen: %d\n", ScreenNum); - mmapStat(Base,Size); - /* To force the MMAP driver to provide the address */ - base = (pointer)0; - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "xf86MapVidMem: [s=%x,a=%x]\n", Size, Base); - MapDSC.vaddr = (char *)base; - MapDSC.physaddr = (char *)Base; - MapDSC.length = Size; - MapDSC.ioflg = 1; - if(mmapFd >= 0) - { - if((base = (pointer)ioctl(mmapFd, MAP, &MapDSC)) == (pointer)-1) - { - FatalError("%s: Could not mmap framebuffer [s=%x,a=%x] (%s)\n", - "xf86MapVidMem", Size, Base, strerror(errno)); - /* NOTREACHED */ - } - - /* Next time we want the same address! */ - MapDSC.vaddr = (char *)base; - } - - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "MapDSC.vaddr : 0x%x\n", MapDSC.vaddr); - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "MapDSC.physaddr: 0x%x\n", MapDSC.physaddr); - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "MapDSC.length : %d\n", MapDSC.length); - mmapStat(Base,Size); - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "xf86MapVidMem: [s=%x,a=%x,b=%x]\n", Size, Base, base); - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "xf86MapVidMem: SUCCEED Mapping FrameBuffer \n"); -#endif /* HAS_SVR3_MMAPDRV */ -#endif /* SVR4 */ - return(base); -} - -/* ARGSUSED */ -static void -unmapVidMem(int ScreenNum, pointer Base, unsigned long Size) -{ -#if defined (SVR4) - munmap(Base, Size); -#else /* SVR4 */ -#ifdef HAS_SVR3_MMAPDRV - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "# xf86UnMapVidMem: UNMapping FrameBuffer\n"); - mmapStat(Base,Size); - ioctl(mmapFd, UNMAPRM , Base); - mmapStat(Base,Size); - xf86MsgVerb(X_INFO, MMAP_DEBUG, - "# xf86UnMapVidMem: Screen: %d [v=%x]\n", ScreenNum, Base); -#endif /* HAS_SVR3_MMAPDRV */ -#endif /* SVR4 */ - return; -} - -#if defined(SVR4) && defined(__i386__) && !defined(sun) -/* - * For some SVR4 versions, a 32-bit read is done for the first location - * in each page when the page is first mapped. If this is done while - * memory access is enabled for regions that have read side-effects, - * this can cause unexpected results, including lockups on some hardware. - * This function is called to make sure each page is mapped while it is - * safe to do so. - */ - -/* - * XXX Should get this the correct way (see os/xalloc.c), but since this is - * for one platform I'll be lazy. - */ -#define X_PAGE_SIZE 4096 - -static void -readSideEffects(int ScreenNum, pointer Base, unsigned long Size) -{ - unsigned long base, end, addr; - CARD32 val; - - base = (unsigned long)Base; - end = base + Size; - - for (addr = base; addr < end; addr += X_PAGE_SIZE) - val = *(volatile CARD32 *)addr; -} -#endif - -void -xf86OSInitVidMem(VidMemInfoPtr pVidMem) -{ - pVidMem->linearSupported = linearVidMem(); - pVidMem->mapMem = mapVidMem; - pVidMem->unmapMem = unmapVidMem; -#if defined(SVR4) && defined(__i386__) && !defined(sun) - pVidMem->readSideEffects = readSideEffects; -#endif - pVidMem->initialised = TRUE; -} - -/***************************************************************************/ -/* I/O Permissions section */ -/***************************************************************************/ - -static Bool ExtendedEnabled = FALSE; -static Bool InitDone = FALSE; - -Bool -xf86EnableIO() -{ - int i; - - if (ExtendedEnabled) - return TRUE; - - if (SET_IOPL() < 0) - { - xf86Msg(X_WARNING, - "xf86EnableIO: Failed to set IOPL for extended I/O\n"); - return FALSE; - } - ExtendedEnabled = TRUE; - - return TRUE; -} - -void -xf86DisableIO() -{ - if (!ExtendedEnabled) - return; - - RESET_IOPL(); - ExtendedEnabled = FALSE; - - return; -} +/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
+ * Copyright 1993 by David Wexelblat <dwex@goblin.org>
+ *
+ * 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 names of Thomas Roell and David Wexelblat
+ * not be used in advertising or publicity pertaining to distribution of
+ * the software without specific, written prior permission. Thomas Roell and
+ * David Wexelblat makes no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * THOMAS ROELL AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THOMAS ROELL OR DAVID WEXELBLAT 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.
+ *
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <X11/X.h>
+
+#define _NEED_SYSI86
+#include "xf86.h"
+#include "xf86Priv.h"
+#include "xf86_OSlib.h"
+#include "xf86OSpriv.h"
+
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *)-1)
+#endif
+
+#ifndef SI86IOPL
+#define SET_IOPL() sysi86(SI86V86,V86SC_IOPL,PS_IOPL)
+#define RESET_IOPL() sysi86(SI86V86,V86SC_IOPL,0)
+#else
+#define SET_IOPL() sysi86(SI86IOPL,3)
+#define RESET_IOPL() sysi86(SI86IOPL,0)
+#endif
+
+/***************************************************************************/
+/* Video Memory Mapping section */
+/***************************************************************************/
+
+/*
+ * XXX Support for SVR3 will need to be reworked if needed. In particular
+ * the Region parameter is no longer passed, and will need to be dealt
+ * with internally if required.
+ * OK, i'll rework that thing ... (clean it up a lot)
+ * SVR3 Support only with SVR3_MMAPDRV (mr)
+ *
+ */
+
+#ifdef HAS_SVR3_MMAPDRV
+#ifndef MMAP_DEBUG
+#define MMAP_DEBUG 3
+#endif
+
+struct kd_memloc MapDSC;
+int mmapFd = -2;
+
+static int
+mmapStat(pointer Base, unsigned long Size) {
+
+ int nmmreg,i=0,region=-1;
+ mmapinfo_t *ibuf;
+
+ nmmreg = ioctl(mmapFd, GETNMMREG);
+
+ if(nmmreg <= 0)
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "\nNo physical memory mapped currently.\n\n");
+ else {
+ if((ibuf = (mmapinfo_t *)malloc(nmmreg*sizeof(mmapinfo_t))) == NULL)
+ xf86Msg(X_WARNING,
+ "Couldn't allocate memory 4 mmapinfo_t\n");
+ else {
+ if(ioctl(mmapFd, GETMMREG, ibuf) != -1)
+ {
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "# mmapStat: [Size=%x,Base=%x]\n", Size, Base);
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "# Physical Address Size Reference Count\n");
+ for(i = 0; i < nmmreg; i++) {
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "%-4d 0x%08X %5dk %5d ",
+ i, ibuf[i].physaddr, ibuf[i].length/1024, ibuf[i].refcnt);
+ if (ibuf[i].physaddr == Base || ibuf[i].length == Size ) {
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,"MATCH !!!");
+ if (region==-1) region=i;
+ }
+ xf86ErrorFVerb(MMAP_DEBUG, "\n");
+ }
+ xf86ErrorFVerb(MMAP_DEBUG, "\n");
+ }
+ free(ibuf);
+ }
+ }
+ if (region == -1 && nmmreg > 0) region=region * i;
+ return region;
+}
+#endif
+
+
+static Bool
+linearVidMem()
+{
+#ifdef SVR4
+ return TRUE;
+#elif defined(HAS_SVR3_MMAPDRV)
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "# xf86LinearVidMem: MMAP 2.2.2 called\n");
+
+ if(mmapFd >= 0) return TRUE;
+
+ if ((mmapFd = open("/dev/mmap", O_RDWR)) != -1)
+ {
+ if(ioctl(mmapFd, GETVERSION) < 0x0222) {
+ xf86Msg(X_WARNING,
+ "xf86LinearVidMem: MMAP 2.2.2 or above required\n");
+ xf86ErrorF("\tlinear memory access disabled\n");
+ return FALSE;
+ }
+ return TRUE;
+ }
+ xf86Msg(X_WARNING, "xf86LinearVidMem: failed to open /dev/mmap (%s)\n",
+ strerror(errno));
+ xf86ErrorF("\tlinear memory access disabled\n");
+ return FALSE;
+#endif
+}
+
+static pointer
+mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
+{
+ pointer base;
+ int fd;
+
+#if defined(SVR4)
+ fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);
+ if (fd < 0)
+ {
+ FatalError("xf86MapVidMem: failed to open %s (%s)\n",
+ DEV_MEM, strerror(errno));
+ }
+ base = mmap((caddr_t)0, Size,
+ (flags & VIDMEM_READONLY) ?
+ PROT_READ : (PROT_READ | PROT_WRITE),
+ MAP_SHARED, fd, (off_t)Base);
+ close(fd);
+ if (base == MAP_FAILED)
+ {
+ FatalError("%s: Could not mmap framebuffer [s=%x,a=%x] (%s)\n",
+ "xf86MapVidMem", Size, Base, strerror(errno));
+ }
+#else /* SVR4 */
+#ifdef HAS_SVR3_MMAPDRV
+
+ xf86MsgVerb(X_INFO, MMAP_DEBUG, "# xf86MapVidMem: MMAP 2.2.2 called\n");
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "MMAP_VERSION: 0x%x\n",ioctl(mmapFd, GETVERSION));
+ if (ioctl(mmapFd, GETVERSION) == -1)
+ {
+ xf86LinearVidMem();
+ }
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "MMAP_VERSION: 0x%x\n",ioctl(mmapFd, GETVERSION));
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "xf86MapVidMem: Screen: %d\n", ScreenNum);
+ mmapStat(Base,Size);
+ /* To force the MMAP driver to provide the address */
+ base = (pointer)0;
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "xf86MapVidMem: [s=%x,a=%x]\n", Size, Base);
+ MapDSC.vaddr = (char *)base;
+ MapDSC.physaddr = (char *)Base;
+ MapDSC.length = Size;
+ MapDSC.ioflg = 1;
+ if(mmapFd >= 0)
+ {
+ if((base = (pointer)ioctl(mmapFd, MAP, &MapDSC)) == (pointer)-1)
+ {
+ FatalError("%s: Could not mmap framebuffer [s=%x,a=%x] (%s)\n",
+ "xf86MapVidMem", Size, Base, strerror(errno));
+ /* NOTREACHED */
+ }
+
+ /* Next time we want the same address! */
+ MapDSC.vaddr = (char *)base;
+ }
+
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "MapDSC.vaddr : 0x%x\n", MapDSC.vaddr);
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "MapDSC.physaddr: 0x%x\n", MapDSC.physaddr);
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "MapDSC.length : %d\n", MapDSC.length);
+ mmapStat(Base,Size);
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "xf86MapVidMem: [s=%x,a=%x,b=%x]\n", Size, Base, base);
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "xf86MapVidMem: SUCCEED Mapping FrameBuffer \n");
+#endif /* HAS_SVR3_MMAPDRV */
+#endif /* SVR4 */
+ return base;
+}
+
+/* ARGSUSED */
+static void
+unmapVidMem(int ScreenNum, pointer Base, unsigned long Size)
+{
+#if defined (SVR4)
+ munmap(Base, Size);
+#else /* SVR4 */
+#ifdef HAS_SVR3_MMAPDRV
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "# xf86UnMapVidMem: UNMapping FrameBuffer\n");
+ mmapStat(Base,Size);
+ ioctl(mmapFd, UNMAPRM , Base);
+ mmapStat(Base,Size);
+ xf86MsgVerb(X_INFO, MMAP_DEBUG,
+ "# xf86UnMapVidMem: Screen: %d [v=%x]\n", ScreenNum, Base);
+#endif /* HAS_SVR3_MMAPDRV */
+#endif /* SVR4 */
+ return;
+}
+
+#if defined(SVR4) && defined(__i386__) && !defined(sun)
+/*
+ * For some SVR4 versions, a 32-bit read is done for the first location
+ * in each page when the page is first mapped. If this is done while
+ * memory access is enabled for regions that have read side-effects,
+ * this can cause unexpected results, including lockups on some hardware.
+ * This function is called to make sure each page is mapped while it is
+ * safe to do so.
+ */
+
+/*
+ * XXX Should get this the correct way (see os/xalloc.c), but since this is
+ * for one platform I'll be lazy.
+ */
+#define X_PAGE_SIZE 4096
+
+static void
+readSideEffects(int ScreenNum, pointer Base, unsigned long Size)
+{
+ unsigned long base, end, addr;
+ CARD32 val;
+
+ base = (unsigned long)Base;
+ end = base + Size;
+
+ for (addr = base; addr < end; addr += X_PAGE_SIZE)
+ val = *(volatile CARD32 *)addr;
+}
+#endif
+
+void
+xf86OSInitVidMem(VidMemInfoPtr pVidMem)
+{
+ pVidMem->linearSupported = linearVidMem();
+ pVidMem->mapMem = mapVidMem;
+ pVidMem->unmapMem = unmapVidMem;
+#if defined(SVR4) && defined(__i386__) && !defined(sun)
+ pVidMem->readSideEffects = readSideEffects;
+#endif
+ pVidMem->initialised = TRUE;
+}
+
+/***************************************************************************/
+/* I/O Permissions section */
+/***************************************************************************/
+
+static Bool ExtendedEnabled = FALSE;
+static Bool InitDone = FALSE;
+
+Bool
+xf86EnableIO()
+{
+ int i;
+
+ if (ExtendedEnabled)
+ return TRUE;
+
+ if (SET_IOPL() < 0)
+ {
+ xf86Msg(X_WARNING,
+ "xf86EnableIO: Failed to set IOPL for extended I/O\n");
+ return FALSE;
+ }
+ ExtendedEnabled = TRUE;
+
+ return TRUE;
+}
+
+void
+xf86DisableIO()
+{
+ if (!ExtendedEnabled)
+ return;
+
+ RESET_IOPL();
+ ExtendedEnabled = FALSE;
+
+ return;
+}
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