1114 lines
30 KiB
C
1114 lines
30 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/lnx_video.c,v 3.67 2003/06/25 18:27:07 eich Exp $ */
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/*
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* Copyright 1992 by Orest Zborowski <obz@Kodak.com>
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* Copyright 1993 by David Wexelblat <dwex@goblin.org>
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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 names of Orest Zborowski and David Wexelblat
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* not be used in advertising or publicity pertaining to distribution of
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* the software without specific, written prior permission. Orest Zborowski
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* and David Wexelblat make no representations about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*
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* OREST ZBOROWSKI AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD
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* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL OREST ZBOROWSKI OR DAVID WEXELBLAT BE LIABLE
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* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* 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
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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/* $XConsortium: lnx_video.c /main/9 1996/10/19 18:06:34 kaleb $ */
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#include "X.h"
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#include "input.h"
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#include "scrnintstr.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#include "xf86OSpriv.h"
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#include "lnx.h"
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#ifdef __alpha__
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#include "xf86Axp.h"
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#endif
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#ifdef HAS_MTRR_SUPPORT
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#include <asm/mtrr.h>
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#endif
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#ifndef MAP_FAILED
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#define MAP_FAILED ((void *)-1)
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#endif
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static Bool ExtendedEnabled = FALSE;
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#ifdef __ia64__
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#include "compiler.h"
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#include <sys/io.h>
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#elif !defined(__powerpc__) && \
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!defined(__mc68000__) && \
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!defined(__sparc__) && \
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!defined(__mips__)
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/*
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* Due to conflicts with "compiler.h", don't rely on <sys/io.h> to declare
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* these.
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*/
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extern int ioperm(unsigned long __from, unsigned long __num, int __turn_on);
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extern int iopl(int __level);
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#endif
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#ifdef __alpha__
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# ifdef LIBC_IS_FIXED
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extern void sethae(unsigned long hae);
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# else
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# include <unistd.h>
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# define sethae(x) syscall(301,x);
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# endif
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/* define to test the Sparse addressing on a non-Jensen */
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# ifdef TEST_JENSEN_CODE
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# define isJensen (1)
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# else
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# define isJensen (axpSystem == JENSEN)
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# endif
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# define BUS_BASE bus_base
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#else
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#define BUS_BASE (0)
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#endif /* __alpha__ */
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/***************************************************************************/
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/* Video Memory Mapping section */
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/***************************************************************************/
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static pointer mapVidMem(int, unsigned long, unsigned long, int);
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static void unmapVidMem(int, pointer, unsigned long);
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#if defined (__alpha__)
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static pointer mapVidMemSparse(int, unsigned long, unsigned long, int);
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extern axpDevice lnxGetAXP(void);
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static void unmapVidMemSparse(int, pointer, unsigned long);
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# if defined(JENSEN_SUPPORT)
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static pointer mapVidMemJensen(int, unsigned long, unsigned long, int);
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static void unmapVidMemJensen(int, pointer, unsigned long);
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# endif
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static axpDevice axpSystem = -1;
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static Bool needSparse;
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static unsigned long hae_thresh;
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static unsigned long hae_mask;
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static unsigned long bus_base;
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static unsigned long sparse_size;
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#endif
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#ifdef HAS_MTRR_SUPPORT
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#define SPLIT_WC_REGIONS 1
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static pointer setWC(int, unsigned long, unsigned long, Bool, MessageType);
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static void undoWC(int, pointer);
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/* The file desc for /proc/mtrr. Once opened, left opened, and the mtrr
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driver will clean up when we exit. */
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#define MTRR_FD_UNOPENED (-1) /* We have yet to open /proc/mtrr */
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#define MTRR_FD_PROBLEM (-2) /* We tried to open /proc/mtrr, but had
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a problem. */
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static int mtrr_fd = MTRR_FD_UNOPENED;
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/* Open /proc/mtrr. FALSE on failure. Will always fail on Linux 2.0,
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and will fail on Linux 2.2 with MTRR support configured out,
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so verbosity should be chosen appropriately. */
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static Bool
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mtrr_open(int verbosity)
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{
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/* Only report absence of /proc/mtrr once. */
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static Bool warned = FALSE;
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char **fn;
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static char *mtrr_files[] = {
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"/dev/cpu/mtrr", /* Possible future name */
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"/proc/mtrr", /* Current name */
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NULL
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};
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if (mtrr_fd == MTRR_FD_UNOPENED) {
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/* So open it. */
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for (fn = mtrr_files; mtrr_fd < 0 && *fn; fn++)
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mtrr_fd = open(*fn, O_WRONLY);
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if (mtrr_fd < 0)
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mtrr_fd = MTRR_FD_PROBLEM;
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}
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if (mtrr_fd == MTRR_FD_PROBLEM) {
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/* To make sure we only ever warn once, need to check
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verbosity outside xf86MsgVerb */
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if (!warned && verbosity <= xf86GetVerbosity()) {
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xf86MsgVerb(X_WARNING, verbosity,
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"System lacks support for changing MTRRs\n");
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warned = TRUE;
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}
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return FALSE;
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}
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else
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return TRUE;
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}
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/*
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* We maintain a list of WC regions for each physical mapping so they can
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* be undone when unmapping.
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*/
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struct mtrr_wc_region {
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struct mtrr_sentry sentry;
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Bool added; /* added WC or removed it */
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struct mtrr_wc_region * next;
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};
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static struct mtrr_wc_region *
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mtrr_cull_wc_region(int screenNum, unsigned long base, unsigned long size,
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MessageType from)
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{
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/* Some BIOS writers thought that setting wc over the mmio
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region of a graphics devices was a good idea. Try to fix
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it. */
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struct mtrr_gentry gent;
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char buf[20];
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struct mtrr_wc_region *wcreturn = NULL, *wcr;
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/* Linux 2.0 users should not get a warning without -verbose */
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if (!mtrr_open(2))
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return NULL;
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for (gent.regnum = 0;
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ioctl(mtrr_fd, MTRRIOC_GET_ENTRY, &gent) >= 0;
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gent.regnum++) {
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if (gent.type != MTRR_TYPE_WRCOMB
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|| gent.base + gent.size <= base
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|| base + size <= gent.base)
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continue;
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/* Found an overlapping region. Delete it. */
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wcr = xalloc(sizeof(*wcr));
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if (!wcr)
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return NULL;
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wcr->sentry.base = gent.base;
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wcr->sentry.size = gent.size;
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wcr->sentry.type = MTRR_TYPE_WRCOMB;
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wcr->added = FALSE;
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/* There is now a nicer ioctl-based way to do this,
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but it isn't in current kernels. */
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snprintf(buf, sizeof(buf), "disable=%u\n", gent.regnum);
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if (write(mtrr_fd, buf, strlen(buf)) >= 0) {
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xf86DrvMsg(screenNum, from,
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"Removed MMIO write-combining range "
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"(0x%lx,0x%lx)\n",
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gent.base, gent.size);
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wcr->next = wcreturn;
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wcreturn = wcr;
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} else {
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xfree(wcr);
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xf86DrvMsgVerb(screenNum, X_WARNING, 0,
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"Failed to remove MMIO "
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"write-combining range (0x%lx,0x%lx)\n",
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gent.base, gent.size);
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}
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}
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return wcreturn;
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}
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static struct mtrr_wc_region *
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mtrr_add_wc_region(int screenNum, unsigned long base, unsigned long size,
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MessageType from)
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{
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struct mtrr_wc_region *wcr;
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/* Linux 2.0 should not warn, unless the user explicitly asks for
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WC. */
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if (!mtrr_open(from == X_CONFIG ? 0 : 2))
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return NULL;
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wcr = xalloc(sizeof(*wcr));
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if (!wcr)
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return NULL;
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wcr->sentry.base = base;
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wcr->sentry.size = size;
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wcr->sentry.type = MTRR_TYPE_WRCOMB;
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wcr->added = TRUE;
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wcr->next = NULL;
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#if SPLIT_WC_REGIONS
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/*
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* Splits up the write-combining region if it is not aligned on a
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* size boundary.
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*/
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{
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unsigned long lbase, d_size = 1;
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unsigned long n_size = size;
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unsigned long n_base = base;
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for (lbase = n_base, d_size = 1; !(lbase & 1);
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lbase = lbase >> 1, d_size <<= 1);
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while (d_size > n_size)
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d_size = d_size >> 1;
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#ifdef DEBUG
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ErrorF("WC_BASE: 0x%lx WC_END: 0x%lx\n",base,base+d_size-1);
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#endif
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n_base += d_size;
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n_size -= d_size;
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if (n_size) {
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xf86DrvMsgVerb(screenNum,X_INFO,3,"Splitting WC range: "
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"base: 0x%lx, size: 0x%lx\n",base,size);
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wcr->next = mtrr_add_wc_region(screenNum, n_base, n_size,from);
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}
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wcr->sentry.size = d_size;
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}
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/*****************************************************************/
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#endif /* SPLIT_WC_REGIONS */
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if (ioctl(mtrr_fd, MTRRIOC_ADD_ENTRY, &wcr->sentry) >= 0) {
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/* Avoid printing on every VT switch */
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if (xf86ServerIsInitialising()) {
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xf86DrvMsg(screenNum, from,
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"Write-combining range (0x%lx,0x%lx)\n",
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base, size);
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}
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return wcr;
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}
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else {
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xfree(wcr);
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/* Don't complain about the VGA region: MTRR fixed
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regions aren't currently supported, but might be in
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the future. */
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if ((unsigned long)base >= 0x100000) {
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xf86DrvMsgVerb(screenNum, X_WARNING, 0,
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"Failed to set up write-combining range "
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"(0x%lx,0x%lx)\n", base, size);
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}
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return NULL;
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}
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}
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static void
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mtrr_undo_wc_region(int screenNum, struct mtrr_wc_region *wcr)
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{
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struct mtrr_wc_region *p, *prev;
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if (mtrr_fd > 0) {
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p = wcr;
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while (p) {
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if (p->added)
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ioctl(mtrr_fd, MTRRIOC_DEL_ENTRY, &p->sentry);
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prev = p;
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p = p->next;
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xfree(prev);
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}
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}
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}
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static pointer
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setWC(int screenNum, unsigned long base, unsigned long size, Bool enable,
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MessageType from)
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{
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if (enable)
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return mtrr_add_wc_region(screenNum, base, size, from);
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else
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return mtrr_cull_wc_region(screenNum, base, size, from);
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}
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static void
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undoWC(int screenNum, pointer regioninfo)
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{
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mtrr_undo_wc_region(screenNum, regioninfo);
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}
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#endif /* HAS_MTRR_SUPPORT */
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void
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xf86OSInitVidMem(VidMemInfoPtr pVidMem)
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{
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pVidMem->linearSupported = TRUE;
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#ifdef __alpha__
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if (axpSystem == -1) {
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axpSystem = lnxGetAXP();
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if ((needSparse = (_bus_base_sparse() > 0))) {
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hae_thresh = xf86AXPParams[axpSystem].hae_thresh;
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hae_mask = xf86AXPParams[axpSystem].hae_mask;
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sparse_size = xf86AXPParams[axpSystem].size;
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}
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bus_base = _bus_base();
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}
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if (isJensen) {
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# ifndef JENSEN_SUPPORT
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FatalError("Jensen is not supported any more\n"
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"If you are intereseted in fixing Jensen support\n"
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"please contact xfree86@xfree86.org\n");
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# else
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xf86Msg(X_INFO,"Machine type is Jensen\n");
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pVidMem->mapMem = mapVidMemJensen;
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pVidMem->unmapMem = unmapVidMemJensen;
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# endif /* JENSEN_SUPPORT */
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} else if (needSparse) {
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xf86Msg(X_INFO,"Machine needs sparse mapping\n");
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pVidMem->mapMem = mapVidMemSparse;
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pVidMem->unmapMem = unmapVidMemSparse;
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} else {
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xf86Msg(X_INFO,"Machine type has 8/16 bit access\n");
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pVidMem->mapMem = mapVidMem;
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pVidMem->unmapMem = unmapVidMem;
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}
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#else
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pVidMem->mapMem = mapVidMem;
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pVidMem->unmapMem = unmapVidMem;
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#endif /* __alpha__ */
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#ifdef HAS_MTRR_SUPPORT
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pVidMem->setWC = setWC;
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pVidMem->undoWC = undoWC;
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#endif
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pVidMem->initialised = TRUE;
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}
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#ifdef __sparc__
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/* Basically, you simply cannot do this on Sparc. You have to do something portable
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* like use /dev/fb* or mmap() on /proc/bus/pci/X/Y nodes. -DaveM
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*/
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static pointer mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
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{
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return NULL;
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}
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#else
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static pointer
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mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
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{
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pointer base;
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int fd;
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int mapflags = MAP_SHARED;
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int prot;
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memType realBase, alignOff;
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realBase = Base & ~(getpagesize() - 1);
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alignOff = Base - realBase;
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#ifdef DEBUG
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ErrorF("base: %lx, realBase: %lx, alignOff: %lx \n",
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Base,realBase,alignOff);
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#endif
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#if defined(__ia64__)
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#ifndef MAP_WRITECOMBINED
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#define MAP_WRITECOMBINED 0x00010000
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#endif
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#ifndef MAP_NONCACHED
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#define MAP_NONCACHED 0x00020000
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#endif
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if(flags & VIDMEM_FRAMEBUFFER)
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mapflags |= MAP_WRITECOMBINED;
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else
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mapflags |= MAP_NONCACHED;
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#endif
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#if 0
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/* this will disappear when people upgrade their kernels */
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fd = open(DEV_MEM,
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((flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR) | O_SYNC);
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#else
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fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);
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#endif
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if (fd < 0)
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{
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FatalError("xf86MapVidMem: failed to open " DEV_MEM " (%s)\n",
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strerror(errno));
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}
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if (flags & VIDMEM_READONLY)
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prot = PROT_READ;
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else
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prot = PROT_READ | PROT_WRITE;
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/* This requires linux-0.99.pl10 or above */
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base = mmap((caddr_t)0, Size + alignOff, prot, mapflags, fd,
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(off_t)(off_t)realBase + BUS_BASE);
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close(fd);
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if (base == MAP_FAILED) {
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FatalError("xf86MapVidMem: Could not mmap framebuffer"
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|
" (0x%08x,0x%x) (%s)\n", Base, Size,
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strerror(errno));
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}
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|
#ifdef DEBUG
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|
ErrorF("base: %lx aligned base: %lx\n",base, base + alignOff);
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|
#endif
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|
return (char *)base + alignOff;
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|
}
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|
#endif /* !(__sparc__) */
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|
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static void
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unmapVidMem(int ScreenNum, pointer Base, unsigned long Size)
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|
{
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|
memType alignOff = (memType)Base
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|
- ((memType)Base & ~(getpagesize() - 1));
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|
|
#ifdef DEBUG
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|
ErrorF("alignment offset: %lx\n",alignOff);
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|
#endif
|
|
munmap((caddr_t)((memType)Base - alignOff), (Size + alignOff));
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}
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|
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|
|
/***************************************************************************/
|
|
/* I/O Permissions section */
|
|
/***************************************************************************/
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|
|
#if defined(__powerpc__)
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|
volatile unsigned char *ioBase = NULL;
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|
|
#ifndef __NR_pciconfig_iobase
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|
#define __NR_pciconfig_iobase 200
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|
#endif
|
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|
|
#endif
|
|
|
|
void
|
|
xf86EnableIO(void)
|
|
{
|
|
#if defined(__powerpc__)
|
|
int fd;
|
|
unsigned int ioBase_phys;
|
|
#endif
|
|
|
|
if (ExtendedEnabled)
|
|
return;
|
|
|
|
#if defined(__powerpc__)
|
|
ioBase_phys = syscall(__NR_pciconfig_iobase, 2, 0, 0);
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|
|
|
fd = open("/dev/mem", O_RDWR);
|
|
if (ioBase == NULL) {
|
|
ioBase = (volatile unsigned char *)mmap(0, 0x20000,
|
|
PROT_READ | PROT_WRITE, MAP_SHARED, fd,
|
|
ioBase_phys);
|
|
/* Should this be fatal or just a warning? */
|
|
#if 0
|
|
if (ioBase == MAP_FAILED) {
|
|
FatalError(
|
|
"xf86EnableIOPorts: Failed to map iobase (%s)\n",
|
|
strerror(errno));
|
|
}
|
|
#endif
|
|
}
|
|
close(fd);
|
|
#elif !defined(__mc68000__) && !defined(__sparc__) && !defined(__mips__) && !defined(__sh__) && !defined(__hppa__)
|
|
if (ioperm(0, 1024, 1) || iopl(3))
|
|
FatalError("xf86EnableIOPorts: Failed to set IOPL for I/O\n");
|
|
# if !defined(__alpha__)
|
|
ioperm(0x40,4,0); /* trap access to the timer chip */
|
|
ioperm(0x60,4,0); /* trap access to the keyboard controller */
|
|
# endif
|
|
#endif
|
|
ExtendedEnabled = TRUE;
|
|
|
|
return;
|
|
}
|
|
|
|
void
|
|
xf86DisableIO(void)
|
|
{
|
|
if (!ExtendedEnabled)
|
|
return;
|
|
#if defined(__powerpc__)
|
|
munmap(ioBase, 0x20000);
|
|
ioBase = NULL;
|
|
#elif !defined(__mc68000__) && !defined(__sparc__) && !defined(__mips__) && !defined(__sh__) && !defined(__hppa__)
|
|
iopl(0);
|
|
ioperm(0, 1024, 0);
|
|
#endif
|
|
ExtendedEnabled = FALSE;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/***************************************************************************/
|
|
/* Interrupt Handling section */
|
|
/***************************************************************************/
|
|
|
|
/* XXX The #ifdefs should be made simpler. */
|
|
|
|
Bool
|
|
xf86DisableInterrupts()
|
|
{
|
|
#if !defined(__mc68000__) && !defined(__powerpc__) && !defined(__sparc__) && !defined(__mips__) && !defined(__ia64__) && !defined(__sh__) && !defined(__hppa__)
|
|
if (!ExtendedEnabled)
|
|
if (iopl(3) || ioperm(0, 1024, 1))
|
|
return (FALSE);
|
|
#endif
|
|
#if defined(__alpha__) || defined(__mc68000__) || defined(__powerpc__) || defined(__sparc__) || defined(__mips__) || defined(__arm__) || defined(__sh__) || defined(__ia64__) || defined(__hppa__)
|
|
#else
|
|
# ifdef __GNUC__
|
|
# if defined(__ia64__)
|
|
# if 0
|
|
__asm__ __volatile__ (";; rsm psr.i;; srlz.d" ::: "memory");
|
|
# endif
|
|
# else
|
|
__asm__ __volatile__("cli");
|
|
# endif
|
|
# else
|
|
asm("cli");
|
|
# endif
|
|
#endif
|
|
#if !defined(__mc68000__) && !defined(__powerpc__) && !defined(__sparc__) && !defined(__mips__) && !defined(__sh__) && !defined(__ia64__) && !defined(__hppa__)
|
|
if (!ExtendedEnabled) {
|
|
iopl(0);
|
|
ioperm(0, 1024, 0);
|
|
}
|
|
|
|
#endif
|
|
return (TRUE);
|
|
}
|
|
|
|
void
|
|
xf86EnableInterrupts()
|
|
{
|
|
#if !defined(__mc68000__) && !defined(__powerpc__) && !defined(__sparc__) && !defined(__mips__) && !defined(__ia64__) && !defined(__sh__) && !defined(__hppa__)
|
|
if (!ExtendedEnabled)
|
|
if (iopl(3) || ioperm(0, 1024, 1))
|
|
return;
|
|
#endif
|
|
#if defined(__alpha__) || defined(__mc68000__) || defined(__powerpc__) || defined(__sparc__) || defined(__mips__) || defined(__arm__) || defined(__sh__) || defined(__ia64__) || defined(__hppa__)
|
|
#else
|
|
# ifdef __GNUC__
|
|
# if defined(__ia64__)
|
|
# if 0
|
|
__asm__ __volatile__ (";; ssm psr.i;; srlz.d" ::: "memory");
|
|
# endif
|
|
# else
|
|
__asm__ __volatile__("sti");
|
|
# endif
|
|
# else
|
|
asm("sti");
|
|
# endif
|
|
#endif
|
|
#if !defined(__mc68000__) && !defined(__powerpc__) && !defined(__sparc__) && !defined(__mips__) && !defined(__sh__) && !defined(__ia64__) && !defined(__hppa__)
|
|
if (!ExtendedEnabled) {
|
|
iopl(0);
|
|
ioperm(0, 1024, 0);
|
|
}
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
#if defined (__alpha__)
|
|
|
|
#define vuip volatile unsigned int *
|
|
|
|
extern int readDense8(pointer Base, register unsigned long Offset);
|
|
extern int readDense16(pointer Base, register unsigned long Offset);
|
|
extern int readDense32(pointer Base, register unsigned long Offset);
|
|
extern void
|
|
writeDenseNB8(int Value, pointer Base, register unsigned long Offset);
|
|
extern void
|
|
writeDenseNB16(int Value, pointer Base, register unsigned long Offset);
|
|
extern void
|
|
writeDenseNB32(int Value, pointer Base, register unsigned long Offset);
|
|
extern void
|
|
writeDense8(int Value, pointer Base, register unsigned long Offset);
|
|
extern void
|
|
writeDense16(int Value, pointer Base, register unsigned long Offset);
|
|
extern void
|
|
writeDense32(int Value, pointer Base, register unsigned long Offset);
|
|
|
|
static int readSparse8(pointer Base, register unsigned long Offset);
|
|
static int readSparse16(pointer Base, register unsigned long Offset);
|
|
static int readSparse32(pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparseNB8(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparseNB16(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparseNB32(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparse8(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparse16(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparse32(int Value, pointer Base, register unsigned long Offset);
|
|
|
|
#define DENSE_BASE 0x2ff00000000UL
|
|
#define SPARSE_BASE 0x30000000000UL
|
|
|
|
static unsigned long msb_set = 0;
|
|
|
|
static pointer
|
|
mapVidMemSparse(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
|
|
{
|
|
int fd, prot;
|
|
unsigned long ret, rets = 0;
|
|
|
|
static Bool was_here = FALSE;
|
|
|
|
if (!was_here) {
|
|
was_here = TRUE;
|
|
|
|
xf86WriteMmio8 = writeSparse8;
|
|
xf86WriteMmio16 = writeSparse16;
|
|
xf86WriteMmio32 = writeSparse32;
|
|
xf86WriteMmioNB8 = writeSparseNB8;
|
|
xf86WriteMmioNB16 = writeSparseNB16;
|
|
xf86WriteMmioNB32 = writeSparseNB32;
|
|
xf86ReadMmio8 = readSparse8;
|
|
xf86ReadMmio16 = readSparse16;
|
|
xf86ReadMmio32 = readSparse32;
|
|
}
|
|
|
|
fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);
|
|
if (fd < 0) {
|
|
FatalError("xf86MapVidMem: failed to open " DEV_MEM " (%s)\n",
|
|
strerror(errno));
|
|
}
|
|
|
|
#if 0
|
|
xf86Msg(X_INFO,"mapVidMemSparse: try Base 0x%lx size 0x%lx flags 0x%x\n",
|
|
Base, Size, flags);
|
|
#endif
|
|
|
|
if (flags & VIDMEM_READONLY)
|
|
prot = PROT_READ;
|
|
else
|
|
prot = PROT_READ | PROT_WRITE;
|
|
|
|
/* This requirers linux-0.99.pl10 or above */
|
|
|
|
/*
|
|
* Always do DENSE mmap, since read32/write32 currently require it.
|
|
*/
|
|
ret = (unsigned long)mmap((caddr_t)(DENSE_BASE + Base), Size,
|
|
prot, MAP_SHARED, fd,
|
|
(off_t) (bus_base + Base));
|
|
|
|
/*
|
|
* Do SPARSE mmap only when MMIO and not MMIO_32BIT, or FRAMEBUFFER
|
|
* and SPARSE (which should require the use of read/write macros).
|
|
*
|
|
* By not SPARSE mmapping an 8MB framebuffer, we can save approx. 256K
|
|
* bytes worth of pagetable (32 pages).
|
|
*/
|
|
if (((flags & VIDMEM_MMIO) && !(flags & VIDMEM_MMIO_32BIT)) ||
|
|
((flags & VIDMEM_FRAMEBUFFER) && (flags & VIDMEM_SPARSE)))
|
|
{
|
|
rets = (unsigned long)mmap((caddr_t)(SPARSE_BASE + (Base << 5)),
|
|
Size << 5, prot, MAP_SHARED, fd,
|
|
(off_t) _bus_base_sparse() + (Base << 5));
|
|
}
|
|
|
|
close(fd);
|
|
|
|
if (ret == (unsigned long)MAP_FAILED) {
|
|
FatalError("xf86MapVidMemSparse: Could not (dense) mmap fb (%s)\n",
|
|
strerror(errno));
|
|
}
|
|
|
|
if (((flags & VIDMEM_MMIO) && !(flags & VIDMEM_MMIO_32BIT)) ||
|
|
((flags & VIDMEM_FRAMEBUFFER) && (flags & VIDMEM_SPARSE)))
|
|
{
|
|
if (rets == (unsigned long)MAP_FAILED ||
|
|
rets != (SPARSE_BASE + (Base << 5)))
|
|
{
|
|
FatalError("mapVidMemSparse: Could not (sparse) mmap fb (%s)\n",
|
|
strerror(errno));
|
|
}
|
|
}
|
|
|
|
#if 1
|
|
if (rets)
|
|
xf86Msg(X_INFO,"mapVidMemSparse: mapped Base 0x%lx size 0x%lx"
|
|
" to DENSE at 0x%lx and SPARSE at 0x%lx\n",
|
|
Base, Size, ret, rets);
|
|
else
|
|
xf86Msg(X_INFO,"mapVidMemSparse: mapped Base 0x%lx size 0x%lx"
|
|
" to DENSE only at 0x%lx\n",
|
|
Base, Size, ret);
|
|
|
|
#endif
|
|
return (pointer) ret;
|
|
}
|
|
|
|
static void
|
|
unmapVidMemSparse(int ScreenNum, pointer Base, unsigned long Size)
|
|
{
|
|
unsigned long Offset = (unsigned long)Base - DENSE_BASE;
|
|
#if 1
|
|
xf86Msg(X_INFO,"unmapVidMemSparse: unmapping Base 0x%lx Size 0x%lx\n",
|
|
Base, Size);
|
|
#endif
|
|
/* Unmap DENSE always. */
|
|
munmap((caddr_t)Base, Size);
|
|
|
|
/* Unmap SPARSE always, and ignore error in case we did not map it. */
|
|
munmap((caddr_t)(SPARSE_BASE + (Offset << 5)), Size << 5);
|
|
}
|
|
|
|
static int
|
|
readSparse8(pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned long result, shift;
|
|
register unsigned long msb;
|
|
|
|
mem_barrier();
|
|
Offset += (unsigned long)Base - DENSE_BASE;
|
|
shift = (Offset & 0x3) << 3;
|
|
if (Offset >= (hae_thresh)) {
|
|
msb = Offset & hae_mask;
|
|
Offset -= msb;
|
|
if (msb_set != msb) {
|
|
sethae(msb);
|
|
msb_set = msb;
|
|
}
|
|
}
|
|
|
|
mem_barrier();
|
|
result = *(vuip) (SPARSE_BASE + (Offset << 5));
|
|
result >>= shift;
|
|
return 0xffUL & result;
|
|
}
|
|
|
|
static int
|
|
readSparse16(pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned long result, shift;
|
|
register unsigned long msb;
|
|
|
|
mem_barrier();
|
|
Offset += (unsigned long)Base - DENSE_BASE;
|
|
shift = (Offset & 0x2) << 3;
|
|
if (Offset >= hae_thresh) {
|
|
msb = Offset & hae_mask;
|
|
Offset -= msb;
|
|
if (msb_set != msb) {
|
|
sethae(msb);
|
|
msb_set = msb;
|
|
}
|
|
}
|
|
|
|
mem_barrier();
|
|
result = *(vuip)(SPARSE_BASE + (Offset<<5) + (1<<(5-2)));
|
|
result >>= shift;
|
|
return 0xffffUL & result;
|
|
}
|
|
|
|
static int
|
|
readSparse32(pointer Base, register unsigned long Offset)
|
|
{
|
|
/* NOTE: this is really using DENSE. */
|
|
mem_barrier();
|
|
return *(vuip)((unsigned long)Base+(Offset));
|
|
}
|
|
|
|
static void
|
|
writeSparse8(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned long msb;
|
|
register unsigned int b = Value & 0xffU;
|
|
|
|
write_mem_barrier();
|
|
Offset += (unsigned long)Base - DENSE_BASE;
|
|
if (Offset >= hae_thresh) {
|
|
msb = Offset & hae_mask;
|
|
Offset -= msb;
|
|
if (msb_set != msb) {
|
|
sethae(msb);
|
|
msb_set = msb;
|
|
}
|
|
}
|
|
|
|
write_mem_barrier();
|
|
*(vuip) (SPARSE_BASE + (Offset << 5)) = b * 0x01010101;
|
|
}
|
|
|
|
static void
|
|
writeSparse16(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned long msb;
|
|
register unsigned int w = Value & 0xffffU;
|
|
|
|
write_mem_barrier();
|
|
Offset += (unsigned long)Base - DENSE_BASE;
|
|
if (Offset >= hae_thresh) {
|
|
msb = Offset & hae_mask;
|
|
Offset -= msb;
|
|
if (msb_set != msb) {
|
|
sethae(msb);
|
|
msb_set = msb;
|
|
}
|
|
}
|
|
|
|
write_mem_barrier();
|
|
*(vuip)(SPARSE_BASE + (Offset<<5) + (1<<(5-2))) = w * 0x00010001;
|
|
}
|
|
|
|
static void
|
|
writeSparse32(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
/* NOTE: this is really using DENSE. */
|
|
write_mem_barrier();
|
|
*(vuip)((unsigned long)Base + (Offset)) = Value;
|
|
return;
|
|
}
|
|
|
|
static void
|
|
writeSparseNB8(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned long msb;
|
|
register unsigned int b = Value & 0xffU;
|
|
|
|
Offset += (unsigned long)Base - DENSE_BASE;
|
|
if (Offset >= hae_thresh) {
|
|
msb = Offset & hae_mask;
|
|
Offset -= msb;
|
|
if (msb_set != msb) {
|
|
sethae(msb);
|
|
msb_set = msb;
|
|
}
|
|
}
|
|
*(vuip) (SPARSE_BASE + (Offset << 5)) = b * 0x01010101;
|
|
}
|
|
|
|
static void
|
|
writeSparseNB16(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned long msb;
|
|
register unsigned int w = Value & 0xffffU;
|
|
|
|
Offset += (unsigned long)Base - DENSE_BASE;
|
|
if (Offset >= hae_thresh) {
|
|
msb = Offset & hae_mask;
|
|
Offset -= msb;
|
|
if (msb_set != msb) {
|
|
sethae(msb);
|
|
msb_set = msb;
|
|
}
|
|
}
|
|
*(vuip)(SPARSE_BASE+(Offset<<5)+(1<<(5-2))) = w * 0x00010001;
|
|
}
|
|
|
|
static void
|
|
writeSparseNB32(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
/* NOTE: this is really using DENSE. */
|
|
*(vuip)((unsigned long)Base + (Offset)) = Value;
|
|
return;
|
|
}
|
|
|
|
void (*xf86WriteMmio8)(int Value, pointer Base, unsigned long Offset)
|
|
= writeDense8;
|
|
void (*xf86WriteMmio16)(int Value, pointer Base, unsigned long Offset)
|
|
= writeDense16;
|
|
void (*xf86WriteMmio32)(int Value, pointer Base, unsigned long Offset)
|
|
= writeDense32;
|
|
void (*xf86WriteMmioNB8)(int Value, pointer Base, unsigned long Offset)
|
|
= writeDenseNB8;
|
|
void (*xf86WriteMmioNB16)(int Value, pointer Base, unsigned long Offset)
|
|
= writeDenseNB16;
|
|
void (*xf86WriteMmioNB32)(int Value, pointer Base, unsigned long Offset)
|
|
= writeDenseNB32;
|
|
int (*xf86ReadMmio8)(pointer Base, unsigned long Offset)
|
|
= readDense8;
|
|
int (*xf86ReadMmio16)(pointer Base, unsigned long Offset)
|
|
= readDense16;
|
|
int (*xf86ReadMmio32)(pointer Base, unsigned long Offset)
|
|
= readDense32;
|
|
|
|
#ifdef JENSEN_SUPPORT
|
|
|
|
static int
|
|
readSparseJensen8(pointer Base, register unsigned long Offset);
|
|
static int
|
|
readSparseJensen16(pointer Base, register unsigned long Offset);
|
|
static int
|
|
readSparseJensen32(pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparseJensen8(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparseJensen16(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparseJensen32(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparseJensenNB8(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparseJensenNB16(int Value, pointer Base, register unsigned long Offset);
|
|
static void
|
|
writeSparseJensenNB32(int Value, pointer Base, register unsigned long Offset);
|
|
|
|
/*
|
|
* The Jensen lacks dense memory, thus we have to address the bus via
|
|
* the sparse addressing scheme.
|
|
*
|
|
* Martin Ostermann (ost@comnets.rwth-aachen.de) - Apr.-Sep. 1996
|
|
*/
|
|
|
|
#ifdef TEST_JENSEN_CODE
|
|
#define SPARSE (5)
|
|
#else
|
|
#define SPARSE (7)
|
|
#endif
|
|
|
|
#define JENSEN_SHIFT(x) ((long)x<<SPARSE)
|
|
|
|
static pointer
|
|
mapVidMemJensen(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
|
|
{
|
|
pointer base;
|
|
int fd, prot;
|
|
|
|
xf86WriteMmio8 = writeSparseJensen8;
|
|
xf86WriteMmio16 = writeSparseJensen16;
|
|
xf86WriteMmio32 = writeSparseJensen32;
|
|
xf86WriteMmioNB8 = writeSparseJensenNB8;
|
|
xf86WriteMmioNB16 = writeSparseJensenNB16;
|
|
xf86WriteMmioNB32 = writeSparseJensenNB32;
|
|
xf86ReadMmio8 = readSparseJensen8;
|
|
xf86ReadMmio16 = readSparseJensen16;
|
|
xf86ReadMmio32 = readSparseJensen32;
|
|
|
|
fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);
|
|
if (fd < 0) {
|
|
FatalError("xf86MapVidMem: failed to open " DEV_MEM " (%s)\n",
|
|
strerror(errno));
|
|
}
|
|
|
|
if (flags & VIDMEM_READONLY)
|
|
prot = PROT_READ;
|
|
else
|
|
prot = PROT_READ | PROT_WRITE;
|
|
|
|
/* This requires linux-0.99.pl10 or above */
|
|
base = mmap((caddr_t)0, JENSEN_SHIFT(Size),
|
|
prot, MAP_SHARED, fd,
|
|
(off_t)(JENSEN_SHIFT((off_t)Base) + _bus_base_sparse()));
|
|
close(fd);
|
|
if (base == MAP_FAILED) {
|
|
FatalError("xf86MapVidMem: Could not mmap framebuffer"
|
|
" (0x%08x,0x%x) (%s)\n", Base, Size,
|
|
strerror(errno));
|
|
}
|
|
return base;
|
|
}
|
|
|
|
static void
|
|
unmapVidMemJensen(int ScreenNum, pointer Base, unsigned long Size)
|
|
{
|
|
munmap((caddr_t)Base, JENSEN_SHIFT(Size));
|
|
}
|
|
|
|
static int
|
|
readSparseJensen8(pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned long result, shift;
|
|
|
|
mem_barrier();
|
|
shift = (Offset & 0x3) << 3;
|
|
|
|
result = *(vuip) ((unsigned long)Base + (Offset << SPARSE));
|
|
|
|
result >>= shift;
|
|
return 0xffUL & result;
|
|
}
|
|
|
|
static int
|
|
readSparseJensen16(pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned long result, shift;
|
|
|
|
mem_barrier();
|
|
shift = (Offset & 0x2) << 3;
|
|
|
|
result = *(vuip)((unsigned long)Base+(Offset<<SPARSE)+(1<<(SPARSE-2)));
|
|
|
|
result >>= shift;
|
|
return 0xffffUL & result;
|
|
}
|
|
|
|
static int
|
|
readSparseJensen32(pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned long result;
|
|
|
|
mem_barrier();
|
|
result = *(vuip)((unsigned long)Base+(Offset<<SPARSE)+(3<<(SPARSE-2)));
|
|
|
|
return result;
|
|
}
|
|
|
|
static void
|
|
writeSparseJensen8(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned int b = Value & 0xffU;
|
|
|
|
write_mem_barrier();
|
|
*(vuip) ((unsigned long)Base + (Offset << SPARSE)) = b * 0x01010101;
|
|
}
|
|
|
|
static void
|
|
writeSparseJensen16(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned int w = Value & 0xffffU;
|
|
|
|
write_mem_barrier();
|
|
*(vuip)((unsigned long)Base+(Offset<<SPARSE)+(1<<(SPARSE-2))) =
|
|
w * 0x00010001;
|
|
}
|
|
|
|
static void
|
|
writeSparseJensen32(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
write_mem_barrier();
|
|
*(vuip)((unsigned long)Base+(Offset<<SPARSE)+(3<<(SPARSE-2))) = Value;
|
|
}
|
|
|
|
static void
|
|
writeSparseJensenNB8(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned int b = Value & 0xffU;
|
|
|
|
*(vuip) ((unsigned long)Base + (Offset << SPARSE)) = b * 0x01010101;
|
|
}
|
|
|
|
static void
|
|
writeSparseJensenNB16(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
register unsigned int w = Value & 0xffffU;
|
|
|
|
*(vuip)((unsigned long)Base+(Offset<<SPARSE)+(1<<(SPARSE-2))) =
|
|
w * 0x00010001;
|
|
}
|
|
|
|
static void
|
|
writeSparseJensenNB32(int Value, pointer Base, register unsigned long Offset)
|
|
{
|
|
*(vuip)((unsigned long)Base+(Offset<<SPARSE)+(3<<(SPARSE-2))) = Value;
|
|
}
|
|
#endif /* JENSEN_SUPPORT */
|
|
|
|
#endif /* __alpha__ */
|