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Diffstat (limited to 'hw/xfree86/os-support/bsd/alpha_video.c')
-rw-r--r--hw/xfree86/os-support/bsd/alpha_video.c709
1 files changed, 709 insertions, 0 deletions
diff --git a/hw/xfree86/os-support/bsd/alpha_video.c b/hw/xfree86/os-support/bsd/alpha_video.c
new file mode 100644
index 000000000..d3aa25961
--- /dev/null
+++ b/hw/xfree86/os-support/bsd/alpha_video.c
@@ -0,0 +1,709 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bsd/alpha_video.c,v 1.2.2.1 2003/05/09 02:30:43 dawes Exp $ */
+/*
+ * Copyright 1992 by Rich Murphey <Rich@Rice.edu>
+ * 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 Rich Murphey and David Wexelblat
+ * not be used in advertising or publicity pertaining to distribution of
+ * the software without specific, written prior permission. Rich Murphey and
+ * David Wexelblat make no representations about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RICH MURPHEY 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.
+ *
+ */
+
+/* $XConsortium: bsd_video.c /main/10 1996/10/25 11:37:57 kaleb $ */
+
+#include "X.h"
+#include "xf86.h"
+#include "xf86Priv.h"
+
+#include <sys/param.h>
+#ifndef __NetBSD__
+# include <sys/sysctl.h>
+# ifdef __FreeBSD__
+# include <machine/sysarch.h>
+# endif
+# else
+# include <machine/sysarch.h>
+#endif
+
+#include "xf86Axp.h"
+
+#include "xf86_OSlib.h"
+#include "xf86OSpriv.h"
+
+#if defined(__NetBSD__) && !defined(MAP_FILE)
+#define MAP_FLAGS MAP_SHARED
+#else
+#define MAP_FLAGS (MAP_FILE | MAP_SHARED)
+#endif
+
+#ifndef MAP_FAILED
+#define MAP_FAILED ((caddr_t)-1)
+#endif
+
+axpDevice bsdGetAXP(void);
+
+#ifndef __NetBSD__
+extern unsigned long dense_base(void);
+
+static int axpSystem = -1;
+static unsigned long hae_thresh;
+static unsigned long hae_mask;
+static unsigned long bus_base;
+static unsigned long sparse_size;
+
+static unsigned long
+memory_base(void)
+{
+ static unsigned long base = 0;
+
+ if (base == 0) {
+ size_t len = sizeof(base);
+ int error;
+#ifdef __OpenBSD__
+ int mib[3];
+
+ mib[0] = CTL_MACHDEP;
+ mib[1] = CPU_CHIPSET;
+ mib[2] = CPU_CHIPSET_MEM;
+
+ if ((error = sysctl(mib, 3, &base, &len, NULL, 0)) < 0)
+#else
+ if ((error = sysctlbyname("hw.chipset.memory", &base, &len,
+ 0, 0)) < 0)
+#endif
+ FatalError("xf86MapVidMem: can't find memory\n");
+ }
+
+ return base;
+}
+
+static int
+has_bwx(void)
+{
+ static int bwx = 0;
+ size_t len = sizeof(bwx);
+ int error;
+#ifdef __OpenBSD__
+ int mib[3];
+
+ mib[0] = CTL_MACHDEP;
+ mib[1] = CPU_CHIPSET;
+ mib[2] = CPU_CHIPSET_BWX;
+
+ if ((error = sysctl(mib, 3, &bwx, &len, NULL, 0)) < 0)
+ return FALSE;
+ else
+ return bwx;
+#else
+ if ((error = sysctlbyname("hw.chipset.bwx", &bwx, &len, 0, 0)) < 0)
+ return FALSE;
+ else
+ return bwx;
+#endif
+}
+#else /* __NetBSD__ */
+static struct alpha_bus_window *abw;
+static int abw_count = -1;
+
+static void
+init_abw()
+{
+ if (abw_count < 0) {
+ abw_count = alpha_bus_getwindows(ALPHA_BUS_TYPE_PCI_MEM, &abw);
+ if (abw_count <= 0)
+ FatalError("init_abw: alpha_bus_getwindows failed\n");
+ }
+}
+
+static int
+has_bwx(void)
+{
+ if (abw_count < 0)
+ init_abw();
+
+ xf86Msg(X_INFO, "has_bwx = %d\n",
+ abw[0].abw_abst.abst_flags & ABST_BWX ? 1 : 0); /* XXXX */
+ return abw[0].abw_abst.abst_flags & ABST_BWX;
+}
+
+static unsigned long
+dense_base()
+{
+ if (abw_count < 0)
+ init_abw();
+
+ /* XXX check abst_flags for ABST_DENSE just to be safe? */
+ xf86Msg(X_INFO, "dense base = %#lx\n",
+ abw[0].abw_abst.abst_sys_start); /* XXXX */
+ return abw[0].abw_abst.abst_sys_start;
+}
+
+static unsigned long
+memory_base()
+{
+ if (abw_count < 0)
+ init_abw();
+
+ if (abw_count > 0) {
+ xf86Msg(X_INFO, "memory base = %#lx\n",
+ abw[1].abw_abst.abst_sys_start); /* XXXX */
+ return abw[1].abw_abst.abst_sys_start;
+ } else {
+ xf86Msg(X_INFO, "no memory base\n"); /* XXXX */
+ return 0;
+ }
+}
+#endif /* __NetBSD__ */
+
+#define BUS_BASE dense_base()
+#define BUS_BASE_BWX memory_base()
+
+/***************************************************************************/
+/* Video Memory Mapping section */
+/***************************************************************************/
+
+#ifdef __OpenBSD__
+#define SYSCTL_MSG "\tCheck that you have set 'machdep.allowaperture=1'\n"\
+ "\tin /etc/sysctl.conf and reboot your machine\n" \
+ "\trefer to xf86(4) for details"
+#endif
+
+static Bool useDevMem = FALSE;
+static int devMemFd = -1;
+
+#ifdef HAS_APERTURE_DRV
+#define DEV_APERTURE "/dev/xf86"
+#endif
+#define DEV_MEM "/dev/mem"
+
+static pointer mapVidMem(int, unsigned long, unsigned long, int);
+static void unmapVidMem(int, pointer, unsigned long);
+static pointer mapVidMemSparse(int, unsigned long, unsigned long, int);
+static void unmapVidMemSparse(int, pointer, unsigned long);
+
+/*
+ * Check if /dev/mem can be mmap'd. If it can't print a warning when
+ * "warn" is TRUE.
+ */
+static void
+checkDevMem(Bool warn)
+{
+ static Bool devMemChecked = FALSE;
+ int fd;
+ pointer base;
+
+ if (devMemChecked)
+ return;
+ devMemChecked = TRUE;
+
+#ifdef HAS_APERTURE_DRV
+ /* Try the aperture driver first */
+ if ((fd = open(DEV_APERTURE, O_RDWR)) >= 0) {
+ /* Try to map a page at the VGA address */
+ base = mmap((caddr_t)0, 4096, PROT_READ|PROT_WRITE,
+ MAP_FLAGS, fd, (off_t)0xA0000 + BUS_BASE);
+
+ if (base != MAP_FAILED) {
+ munmap((caddr_t)base, 4096);
+ devMemFd = fd;
+ useDevMem = TRUE;
+ xf86Msg(X_INFO, "checkDevMem: using aperture driver %s\n",
+ DEV_APERTURE);
+ return;
+ } else {
+ if (warn) {
+ xf86Msg(X_WARNING, "checkDevMem: failed to mmap %s (%s)\n",
+ DEV_APERTURE, strerror(errno));
+ }
+ }
+ }
+#endif
+ if ((fd = open(DEV_MEM, O_RDWR)) >= 0) {
+ /* Try to map a page at the VGA address */
+ base = mmap((caddr_t)0, 4096, PROT_READ|PROT_WRITE,
+ MAP_FLAGS, fd, (off_t)0xA0000 + BUS_BASE);
+
+ if (base != MAP_FAILED) {
+ munmap((caddr_t)base, 4096);
+ devMemFd = fd;
+ useDevMem = TRUE;
+ return;
+ } else {
+ if (warn) {
+ xf86Msg(X_WARNING, "checkDevMem: failed to mmap %s (%s)\n",
+ DEV_MEM, strerror(errno));
+ }
+ }
+ }
+ if (warn) {
+#ifndef HAS_APERTURE_DRV
+ xf86Msg(X_WARNING, "checkDevMem: failed to open/mmap %s (%s)\n",
+ DEV_MEM, strerror(errno));
+#else
+#ifndef __OpenBSD__
+ xf86Msg(X_WARNING, "checkDevMem: failed to open %s and %s\n"
+ "\t(%s)\n", DEV_APERTURE, DEV_MEM, strerror(errno));
+#else /* __OpenBSD__ */
+ xf86Msg(X_WARNING, "checkDevMem: failed to open %s and %s\n"
+ "\t(%s)\n%s", DEV_APERTURE, DEV_MEM, strerror(errno),
+ SYSCTL_MSG);
+#endif /* __OpenBSD__ */
+#endif
+ xf86ErrorF("\tlinear framebuffer access unavailable\n");
+ }
+ useDevMem = FALSE;
+ return;
+}
+
+void
+xf86OSInitVidMem(VidMemInfoPtr pVidMem)
+{
+ checkDevMem(TRUE);
+ pVidMem->linearSupported = useDevMem;
+
+ if (has_bwx()) {
+ xf86Msg(X_PROBED,"Machine type has 8/16 bit access\n");
+ pVidMem->mapMem = mapVidMem;
+ pVidMem->unmapMem = unmapVidMem;
+ } else {
+ xf86Msg(X_PROBED,"Machine needs sparse mapping\n");
+ pVidMem->mapMem = mapVidMemSparse;
+ pVidMem->unmapMem = unmapVidMemSparse;
+ if (axpSystem == -1)
+ axpSystem = bsdGetAXP();
+ hae_thresh = xf86AXPParams[axpSystem].hae_thresh;
+ hae_mask = xf86AXPParams[axpSystem].hae_mask;
+ sparse_size = xf86AXPParams[axpSystem].size;
+ }
+ pVidMem->initialised = TRUE;
+}
+
+static pointer
+mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
+{
+ pointer base;
+
+ checkDevMem(FALSE);
+ Base = Base & ((1L<<32) - 1);
+
+ if (useDevMem)
+ {
+ if (devMemFd < 0)
+ {
+ FatalError("xf86MapVidMem: failed to open %s (%s)\n",
+ DEV_MEM, strerror(errno));
+ }
+ base = mmap((caddr_t)0, Size, PROT_READ|PROT_WRITE,
+ MAP_FLAGS, devMemFd, (off_t)Base + BUS_BASE_BWX);
+ if (base == MAP_FAILED)
+ {
+ FatalError("%s: could not mmap %s [s=%x,a=%x] (%s)\n",
+ "xf86MapVidMem", DEV_MEM, Size, Base,
+ strerror(errno));
+ }
+ return(base);
+ }
+
+ /* else, mmap /dev/vga */
+ if ((unsigned long)Base < 0xA0000 || (unsigned long)Base >= 0xC0000)
+ {
+ FatalError("%s: Address 0x%x outside allowable range\n",
+ "xf86MapVidMem", Base);
+ }
+ base = mmap(0, Size, PROT_READ|PROT_WRITE, MAP_FLAGS,
+ xf86Info.screenFd,
+ (unsigned long)Base + BUS_BASE);
+ if (base == MAP_FAILED)
+ {
+ FatalError("xf86MapVidMem: Could not mmap /dev/vga (%s)\n",
+ strerror(errno));
+ }
+ return(base);
+}
+
+static void
+unmapVidMem(int ScreenNum, pointer Base, unsigned long Size)
+{
+ munmap((caddr_t)Base, Size);
+}
+
+/*
+ * Read BIOS via mmap()ing DEV_MEM
+ */
+
+int
+xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
+ int Len)
+{
+ unsigned char *ptr;
+ int psize;
+ int mlen;
+
+ checkDevMem(TRUE);
+ if (devMemFd == -1) {
+ return(-1);
+ }
+
+ psize = xf86getpagesize();
+ Offset += Base & (psize - 1);
+ Base &= ~(psize - 1);
+ mlen = (Offset + Len + psize - 1) & ~(psize - 1);
+ ptr = (unsigned char *)mmap((caddr_t)0, mlen, PROT_READ,
+ MAP_SHARED, devMemFd, (off_t)Base+BUS_BASE);
+ if ((long)ptr == -1)
+ {
+ xf86Msg(X_WARNING,
+ "xf86ReadBIOS: %s mmap[s=%x,a=%x,o=%x] failed (%s)\n",
+ DEV_MEM, Len, Base, Offset, strerror(errno));
+ return(-1);
+ }
+#ifdef DEBUG
+ xf86MsgVerb(X_INFO, 3, "xf86ReadBIOS: BIOS at 0x%08x has signature 0x%04x\n",
+ Base, ptr[0] | (ptr[1] << 8));
+#endif
+ (void)memcpy(Buf, (void *)(ptr + Offset), Len);
+ (void)munmap((caddr_t)ptr, mlen);
+#ifdef DEBUG
+ xf86MsgVerb(X_INFO, 3, "xf86ReadBIOS(%x, %x, Buf, %x)"
+ "-> %02x %02x %02x %02x...\n",
+ Base, Offset, Len, Buf[0], Buf[1], Buf[2], Buf[3]);
+#endif
+ return(Len);
+}
+
+
+#if defined(__FreeBSD__) || defined(__OpenBSD__)
+
+extern int ioperm(unsigned long from, unsigned long num, int on);
+
+void
+xf86EnableIO()
+{
+ ioperm(0, 65536, TRUE);
+ return;
+}
+
+void
+xf86DisableIO()
+{
+ return;
+}
+
+#endif /* __FreeBSD__ || __OpenBSD__ */
+
+#ifdef USE_ALPHA_PIO
+
+void
+xf86EnableIO()
+{
+ alpha_pci_io_enable(1);
+}
+
+void
+xf86DisableIO()
+{
+ alpha_pci_io_enable(0);
+}
+
+#endif /* USE_ALPHA_PIO */
+
+/***************************************************************************/
+/* Interrupt Handling section */
+/***************************************************************************/
+
+Bool
+xf86DisableInterrupts()
+{
+
+ return(TRUE);
+}
+
+void
+xf86EnableInterrupts()
+{
+ return;
+}
+
+
+#define vuip volatile unsigned int *
+
+static unsigned long msb_set = 0;
+static pointer memSBase = 0;
+static pointer memBase = 0;
+
+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);
+
+#ifdef __FreeBSD__
+extern int sysarch(int, char *);
+#endif
+
+struct parms {
+ u_int64_t hae;
+};
+
+static int
+sethae(u_int64_t hae)
+{
+#ifdef __FreeBSD__
+#ifndef ALPHA_SETHAE
+#define ALPHA_SETHAE 0
+#endif
+ struct parms p;
+ p.hae = hae;
+ return (sysarch(ALPHA_SETHAE, (char *)&p));
+#endif
+#ifdef __OpenBSD__
+ return -1;
+#endif
+}
+
+static pointer
+mapVidMemSparse(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
+{
+ static Bool was_here = FALSE;
+
+ if (!was_here) {
+ was_here = TRUE;
+
+ checkDevMem(FALSE);
+
+ xf86WriteMmio8 = writeSparse8;
+ xf86WriteMmio16 = writeSparse16;
+ xf86WriteMmio32 = writeSparse32;
+ xf86WriteMmioNB8 = writeSparseNB8;
+ xf86WriteMmioNB16 = writeSparseNB16;
+ xf86WriteMmioNB32 = writeSparseNB32;
+ xf86ReadMmio8 = readSparse8;
+ xf86ReadMmio16 = readSparse16;
+ xf86ReadMmio32 = readSparse32;
+
+ memBase = mmap((caddr_t)0, 0x100000000,
+ PROT_READ | PROT_WRITE,
+ MAP_SHARED, devMemFd,
+ (off_t) BUS_BASE);
+ memSBase = mmap((caddr_t)0, 0x100000000,
+ PROT_READ | PROT_WRITE,
+ MAP_SHARED, devMemFd,
+ (off_t) BUS_BASE_BWX);
+
+ if (memSBase == MAP_FAILED || memBase == MAP_FAILED) {
+ FatalError("xf86MapVidMem: Could not mmap framebuffer (%s)\n",
+ strerror(errno));
+ }
+ }
+ return (pointer)((unsigned long)memBase + Base);
+}
+
+static void
+unmapVidMemSparse(int ScreenNum, pointer Base, unsigned long Size)
+{
+}
+
+static int
+readSparse8(pointer Base, register unsigned long Offset)
+{
+ register unsigned long result, shift;
+ register unsigned long msb;
+
+ mem_barrier();
+ Offset += (unsigned long)Base - (unsigned long)memBase;
+ shift = (Offset & 0x3) << 3;
+ if (Offset >= (hae_thresh)) {
+ msb = Offset & hae_mask;
+ Offset -= msb;
+ if (msb_set != msb) {
+ sethae(msb);
+ msb_set = msb;
+ }
+ }
+
+ result = *(vuip) ((unsigned long)memSBase + (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 - (unsigned long)memBase;
+ shift = (Offset & 0x2) << 3;
+ if (Offset >= (hae_thresh)) {
+ msb = Offset & hae_mask;
+ Offset -= msb;
+ if (msb_set != msb) {
+ sethae(msb);
+ msb_set = msb;
+ }
+ }
+ result = *(vuip)((unsigned long)memSBase+(Offset<<5)+(1<<(5-2)));
+ result >>= shift;
+ return 0xffffUL & result;
+}
+
+static int
+readSparse32(pointer Base, register unsigned long Offset)
+{
+ 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 - (unsigned long)memBase;
+ if (Offset >= (hae_thresh)) {
+ msb = Offset & hae_mask;
+ Offset -= msb;
+ if (msb_set != msb) {
+ sethae(msb);
+ msb_set = msb;
+ }
+ }
+ *(vuip) ((unsigned long)memSBase + (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 - (unsigned long)memBase;
+ if (Offset >= (hae_thresh)) {
+ msb = Offset & hae_mask;
+ Offset -= msb;
+ if (msb_set != msb) {
+ sethae(msb);
+ msb_set = msb;
+ }
+ }
+ *(vuip)((unsigned long)memSBase+(Offset<<5)+(1<<(5-2))) =
+ w * 0x00010001;
+
+}
+
+static void
+writeSparse32(int Value, pointer Base, register unsigned long Offset)
+{
+ 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 - (unsigned long)memBase;
+ if (Offset >= (hae_thresh)) {
+ msb = Offset & hae_mask;
+ Offset -= msb;
+ if (msb_set != msb) {
+ sethae(msb);
+ msb_set = msb;
+ }
+ }
+ *(vuip) ((unsigned long)memSBase + (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 - (unsigned long)memBase;
+ if (Offset >= (hae_thresh)) {
+ msb = Offset & hae_mask ;
+ Offset -= msb;
+ if (msb_set != msb) {
+ sethae(msb);
+ msb_set = msb;
+ }
+ }
+ *(vuip)((unsigned long)memSBase+(Offset<<5)+(1<<(5-2))) =
+ w * 0x00010001;
+}
+
+static void
+writeSparseNB32(int Value, pointer Base, register unsigned long Offset)
+{
+ *(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;
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 02:37:58 +0000