/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/pmax/pmax_map.c,v 1.8 2000/11/19 16:38:06 tsi Exp $ */ /* * Copyright 1998 by Concurrent Computer Corporation * * 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 Concurrent Computer * Corporation not be used in advertising or publicity pertaining to * distribution of the software without specific, written prior * permission. Concurrent Computer Corporation makes no representations * about the suitability of this software for any purpose. It is * provided "as is" without express or implied warranty. * * CONCURRENT COMPUTER CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS, IN NO EVENT SHALL CONCURRENT COMPUTER CORPORATION 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. * * Copyright 1998 by Metro Link Incorporated * * 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 Metro Link * Incorporated not be used in advertising or publicity pertaining to * distribution of the software without specific, written prior * permission. Metro Link Incorporated makes no representations * about the suitability of this software for any purpose. It is * provided "as is" without express or implied warranty. * * METRO LINK INCORPORATED DISCLAIMS ALL WARRANTIES WITH REGARD * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS, IN NO EVENT SHALL METRO LINK INCORPORATED 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. * * This file was derived in part from the original XFree86 sysv OS * support which contains the following copyright notice: * * 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. * */ #include "X.h" #include "xf86.h" #include "xf86Priv.h" #include "xf86_OSlib.h" #include "Pci.h" /***************************************************************************/ /* Video Memory Mapping section */ /***************************************************************************/ /* * Map an I/O region given its address (host POV) */ void * pmax_iomap(unsigned long base, unsigned long len) { int fd; void *rv; if ((fd = open("/dev/iomem", O_RDWR)) < 0) { ErrorF("pmax_iomap: failed to open /dev/iomem (%s)\n", strerror(errno)); return(MAP_FAILED); } rv = (void *)mmap((caddr_t)0, len, PROT_READ|PROT_WRITE, MAP_SHARED, fd, (off_t)base); close(fd); return(rv); } Bool xf86LinearVidMem() { return TRUE; } extern void * pmax_iomap(unsigned long, unsigned long); pointer xf86MapVidMem(int ScreenNum, int Region, pointer Base, unsigned long Size) { ErrorF("%s: Not supported on this OS. Drivers should use xf86MapPciMem() instead\n", "xf86MapVidMem"); FatalError("%s: Cannot map [s=%x,a=%x]\n", "xf86MapVidMem", Size, Base); } pointer xf86MapPciMem(int ScreenNum, int Flags, PCITAG Tag, pointer Base, unsigned long Size) { pointer hostbase = pciBusAddrToHostAddr(Tag, Base); pointer base; base = (pointer) pmax_iomap((unsigned long)hostbase, Size); if (base == MAP_FAILED) { xf86Msg(X_WARNING, "xf86MapPciMem: Could not mmap PCI memory " "[base=0x%x,hostbase=0x%x,size=%x] (%s)\n", Base, hostbase, Size, strerror(errno)); } return((pointer)base); } /* ARGSUSED */ void xf86UnMapVidMem(int ScreenNum, pointer Base, unsigned long Size) { munmap(Base, Size); } /* * Read BIOS via mmap()ing /dev/iomem. */ /*ARGSUSED*/ int xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, int Len) { ErrorF("%s: Not supported on this OS. Drivers should use xf86ReadPciBIOS() instead\n", "xf86ReadBIOS"); FatalError("%s: Cannot read BIOS [base=0x%x,offset=0x%x,size=%d]\n", "xf86ReadBIOS", Base, Offset, Len); } int xf86ReadPciBIOS(unsigned long Base, unsigned long Offset, PCITAG Tag, unsigned char *Buf, int Len) { pointer hostbase = pciBusAddrToHostAddr(Tag, (void *)Base); char *base; int psize; int mlen; psize = xf86getpagesize(); Offset += Base & (psize - 1); Base &= ~(psize - 1); mlen = (Offset + Len + psize - 1) & ~(psize - 1); base = pmax_iomap((unsigned long)hostbase, mlen); if (base == MAP_FAILED) { xf86Msg(X_WARNING, "xf86ReadPciBIOS: Could not mmap PCI memory" " [base=0x%x,hostbase=0x%x,size=%x] (%s)\n", Base, hostbase, mlen, strerror(errno)); return(0); } (void)memcpy(Buf, base + Offset, Len); (void)munmap(base, mlen); return(Len); } /***************************************************************************/ /* Interrupt Handling section */ /***************************************************************************/ #include <sys/ipl.h> #ifndef PL_HI #define PL_HI PL8 #endif #ifndef PL_0 #define PL_0 PL0 #endif static void *spl_map_addr = NULL; void pmax_init_splmap(void) { spl_map_addr = spl_map(0); if (!spl_map_addr) { xf86Msg(X_WARNING, "pmax_init_splmap: spl_map() failed. " "Cannot bind to IPL register\n"); xf86ErrorF("\tInterrupts cannot be disabled/enabled !!!\n"); } } Bool xf86DisableInterrupts() { if (spl_map_addr) { (void)spl_request(PL_HI,spl_map_addr); return(TRUE); } return(FALSE); } void xf86EnableInterrupts() { if (spl_map_addr) { (void)spl_request(PL_0, spl_map_addr); } }