/* * Copyright 1992 by Rich Murphey * Copyright 1993 by David Wexelblat * * 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. * */ #ifdef HAVE_XORG_CONFIG_H #include #endif #include #include "xf86.h" #include "xf86Priv.h" #include #ifndef __NetBSD__ # include # if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) # include # endif # else # include #endif #include "shared/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 unsigned long hae_thresh = (1UL << 24); static unsigned long hae_mask = 0xf8000000UL; /* XXX - should use xf86AXP.c */ static struct alpha_bus_window *abw; static int abw_count = -1; static void init_abw(void) { 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(void) { 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(void) { 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; #ifndef __NetBSD__ if (axpSystem == -1) axpSystem = bsdGetAXP(); hae_thresh = xf86AXPParams[axpSystem].hae_thresh; hae_mask = xf86AXPParams[axpSystem].hae_mask; sparse_size = xf86AXPParams[axpSystem].size; #endif /* __NetBSD__ */ } 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, (flags & VIDMEM_READONLY) ? PROT_READ : (PROT_READ | PROT_WRITE), MAP_FLAGS, devMemFd, (off_t)Base + BUS_BASE_BWX); if (base == MAP_FAILED) { FatalError("%s: could not mmap %s [s=%lx,a=%lx] (%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%lx outside allowable range\n", "xf86MapVidMem", Base); } base = mmap(0, Size, (flags & VIDMEM_READONLY) ? PROT_READ : (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 */ _X_EXPORT 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 = getpagesize(); 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=%lx,o=%lx] 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(__FreeBSD_kernel__) || defined(__OpenBSD__) extern int ioperm(unsigned long from, unsigned long num, int on); _X_EXPORT Bool xf86EnableIO() { if (!ioperm(0, 65536, TRUE)) return TRUE; return FALSE; } _X_EXPORT void xf86DisableIO() { return; } #endif /* __FreeBSD_kernel__ || __OpenBSD__ */ #ifdef USE_ALPHA_PIO Bool xf86EnableIO() { alpha_pci_io_enable(1); return TRUE; } void xf86DisableIO() { alpha_pci_io_enable(0); } #endif /* USE_ALPHA_PIO */ #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); #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) extern int sysarch(int, void *); #endif struct parms { u_int64_t hae; }; #ifndef __NetBSD__ static int sethae(u_int64_t hae) { #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) #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 } #endif /* __NetBSD__ */ 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) { #ifndef __NetBSD__ sethae(msb); #endif 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) { #ifndef __NetBSD__ sethae(msb); #endif 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) { #ifndef __NetBSD__ sethae(msb); #endif 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) { #ifndef __NetBSD__ sethae(msb); #endif 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) { #ifndef __NetBSD__ sethae(msb); #endif 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) { #ifndef __NetBSD__ sethae(msb); #endif 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; } _X_EXPORT void (*xf86WriteMmio8)(int Value, pointer Base, unsigned long Offset) = writeDense8; _X_EXPORT void (*xf86WriteMmio16)(int Value, pointer Base, unsigned long Offset) = writeDense16; _X_EXPORT void (*xf86WriteMmio32)(int Value, pointer Base, unsigned long Offset) = writeDense32; _X_EXPORT void (*xf86WriteMmioNB8)(int Value, pointer Base, unsigned long Offset) = writeDenseNB8; _X_EXPORT void (*xf86WriteMmioNB16)(int Value, pointer Base, unsigned long Offset) = writeDenseNB16; _X_EXPORT void (*xf86WriteMmioNB32)(int Value, pointer Base, unsigned long Offset) = writeDenseNB32; _X_EXPORT int (*xf86ReadMmio8)(pointer Base, unsigned long Offset) = readDense8; _X_EXPORT int (*xf86ReadMmio16)(pointer Base, unsigned long Offset) = readDense16; _X_EXPORT int (*xf86ReadMmio32)(pointer Base, unsigned long Offset) = readDense32; /* * Do all things that need root privileges early * and revoke those priviledges */ _X_EXPORT void xf86PrivilegedInit(void) { xf86EnableIO(); checkDevMem(TRUE); pci_system_init(); xf86OpenConsole(); }