diff options
Diffstat (limited to 'hw/xfree86/os-support/lynxos/lynx_mmap.c')
-rw-r--r-- | hw/xfree86/os-support/lynxos/lynx_mmap.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/hw/xfree86/os-support/lynxos/lynx_mmap.c b/hw/xfree86/os-support/lynxos/lynx_mmap.c new file mode 100644 index 000000000..621f42c5d --- /dev/null +++ b/hw/xfree86/os-support/lynxos/lynx_mmap.c @@ -0,0 +1,66 @@ +/* + * Copyright 1993 by Thomas Mueller + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of Thomas Mueller not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Thomas Mueller makes no representations + * about the suitability of this software for any purpose. It is provided + * "as is" without express or implied warranty. + * + * THOMAS MUELLER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THOMAS MUELLER BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + * + */ + +/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/lynxos/lynx_mmap.c,v 3.2 1996/09/29 13:38:29 dawes Exp $ */ + +#include "X.h" +#include "input.h" +#include "scrnintstr.h" + +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" + +/* + * Read BIOS using smem_create facility + */ + +int xf86ReadBIOS(Base, Offset, Buf, Len) +unsigned long Base; +unsigned long Offset; +unsigned char *Buf; +int Len; +{ + char *p; + int mlen; + + mlen = (Offset + Len + 4095) & ~4096; + p = smem_create("BIOS-probe", (char *)Base, mlen, SM_READ); + if (p == NULL) + { + /* check if there is a stale segment around */ + if (smem_remove("BIOS-probe") == 0) { + ErrorF("xf86ReadBios: removed stale smem_ segment\n"); + p = smem_create("BIOS-probe", (char *)Base, mlen, SM_READ); + } + if (p == NULL) { + ErrorF("xf86ReadBios: Failed to smem_create Base %x len %x %s \n", + Base, mlen, strerror(errno)); + return(-1); + } + } + memcpy(Buf, p + Offset, Len); + smem_create(NULL, p, 0, SM_DETACH); + smem_remove("BIOS-probe"); + return(Len); +} |