| 1 | /* |
| 2 | * Copyright 1992 by Rich Murphey <Rich@Rice.edu> |
| 3 | * Copyright 1993 by David Wexelblat <dwex@goblin.org> |
| 4 | * |
| 5 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 6 | * documentation for any purpose is hereby granted without fee, provided that |
| 7 | * the above copyright notice appear in all copies and that both that |
| 8 | * copyright notice and this permission notice appear in supporting |
| 9 | * documentation, and that the names of Rich Murphey and David Wexelblat |
| 10 | * not be used in advertising or publicity pertaining to distribution of |
| 11 | * the software without specific, written prior permission. Rich Murphey and |
| 12 | * David Wexelblat make no representations about the suitability of this |
| 13 | * software for any purpose. It is provided "as is" without express or |
| 14 | * implied warranty. |
| 15 | * |
| 16 | * RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO |
| 17 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 18 | * FITNESS, IN NO EVENT SHALL RICH MURPHEY OR DAVID WEXELBLAT BE LIABLE FOR |
| 19 | * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
| 20 | * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF |
| 21 | * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 22 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | #ifdef HAVE_XORG_CONFIG_H |
| 27 | #include <xorg-config.h> |
| 28 | #endif |
| 29 | |
| 30 | #include <X11/X.h> |
| 31 | #include "xf86.h" |
| 32 | #include "xf86Priv.h" |
| 33 | |
| 34 | #include "xf86_OSlib.h" |
| 35 | #include "xf86OSpriv.h" |
| 36 | |
| 37 | #include "bus/Pci.h" |
| 38 | |
| 39 | /***************************************************************************/ |
| 40 | /* Video Memory Mapping section */ |
| 41 | /***************************************************************************/ |
| 42 | |
| 43 | #ifdef __OpenBSD__ |
| 44 | #define DEV_MEM "/dev/xf86" |
| 45 | #endif |
| 46 | |
| 47 | static pointer ppcMapVidMem(int, unsigned long, unsigned long, int flags); |
| 48 | static void ppcUnmapVidMem(int, pointer, unsigned long); |
| 49 | |
| 50 | Bool xf86EnableIO(void); |
| 51 | void xf86DisableIO(void); |
| 52 | |
| 53 | void |
| 54 | xf86OSInitVidMem(VidMemInfoPtr pVidMem) |
| 55 | { |
| 56 | pVidMem->linearSupported = TRUE; |
| 57 | pVidMem->mapMem = ppcMapVidMem; |
| 58 | pVidMem->unmapMem = ppcUnmapVidMem; |
| 59 | pVidMem->initialised = TRUE; |
| 60 | xf86EnableIO(); |
| 61 | } |
| 62 | |
| 63 | volatile unsigned char *ioBase = MAP_FAILED; |
| 64 | |
| 65 | static pointer |
| 66 | ppcMapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags) |
| 67 | { |
| 68 | int fd = xf86Info.consoleFd; |
| 69 | pointer base; |
| 70 | |
| 71 | #ifdef DEBUG |
| 72 | xf86MsgVerb(X_INFO, 3, "mapVidMem %lx, %lx, fd = %d", Base, Size, fd); |
| 73 | #endif |
| 74 | |
| 75 | base = mmap(0, Size, |
| 76 | (flags & VIDMEM_READONLY) ? |
| 77 | PROT_READ : (PROT_READ | PROT_WRITE), MAP_SHARED, fd, Base); |
| 78 | if (base == MAP_FAILED) |
| 79 | FatalError("%s: could not mmap screen [s=%x,a=%x] (%s)", |
| 80 | "xf86MapVidMem", Size, Base, strerror(errno)); |
| 81 | |
| 82 | return base; |
| 83 | } |
| 84 | |
| 85 | static void |
| 86 | ppcUnmapVidMem(int ScreenNum, pointer Base, unsigned long Size) |
| 87 | { |
| 88 | munmap(Base, Size); |
| 89 | } |
| 90 | |
| 91 | int |
| 92 | xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, |
| 93 | int Len) |
| 94 | { |
| 95 | int rv; |
| 96 | static int kmem = -1; |
| 97 | |
| 98 | if (kmem == -1) { |
| 99 | kmem = open(DEV_MEM, 2); |
| 100 | if (kmem == -1) { |
| 101 | FatalError("xf86ReadBIOS: open %s", DEV_MEM); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | #ifdef DEBUG |
| 106 | xf86MsgVerb(X_INFO, 3, "xf86ReadBIOS() %lx %lx, %x\n", Base, Offset, Len); |
| 107 | #endif |
| 108 | |
| 109 | lseek(kmem, Base + Offset, 0); |
| 110 | rv = read(kmem, Buf, Len); |
| 111 | |
| 112 | return rv; |
| 113 | } |
| 114 | |
| 115 | Bool |
| 116 | xf86EnableIO() |
| 117 | { |
| 118 | int fd = xf86Info.consoleFd; |
| 119 | |
| 120 | xf86MsgVerb(X_WARNING, 3, "xf86EnableIO %d\n", fd); |
| 121 | if (ioBase == MAP_FAILED) { |
| 122 | ioBase = mmap(NULL, 0x10000, PROT_READ | PROT_WRITE, MAP_SHARED, fd, |
| 123 | 0xf2000000); |
| 124 | xf86MsgVerb(X_INFO, 3, "xf86EnableIO: %08x\n", ioBase); |
| 125 | if (ioBase == MAP_FAILED) { |
| 126 | xf86MsgVerb(X_WARNING, 3, "Can't map IO space!\n"); |
| 127 | return FALSE; |
| 128 | } |
| 129 | } |
| 130 | return TRUE; |
| 131 | } |
| 132 | |
| 133 | void |
| 134 | xf86DisableIO() |
| 135 | { |
| 136 | |
| 137 | if (ioBase != MAP_FAILED) { |
| 138 | munmap(__UNVOLATILE(ioBase), 0x10000); |
| 139 | ioBase = MAP_FAILED; |
| 140 | } |
| 141 | } |