diff options
Diffstat (limited to 'hw/xfree86/os-support/bus/freebsdPci.c')
| -rw-r--r-- | hw/xfree86/os-support/bus/freebsdPci.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/hw/xfree86/os-support/bus/freebsdPci.c b/hw/xfree86/os-support/bus/freebsdPci.c new file mode 100644 index 000000000..c3e621daf --- /dev/null +++ b/hw/xfree86/os-support/bus/freebsdPci.c @@ -0,0 +1,167 @@ +/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bus/freebsdPci.c,v 1.5 2002/08/27 22:07:07 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. + */ + +#include <stdio.h> +#include "compiler.h" +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" +#include "Pci.h" + +#include <sys/pciio.h> + +/* + * freebsd platform specific PCI access functions -- using /dev/pci + * needs kernel version 2.2.x + */ +static CARD32 freebsdPciCfgRead(PCITAG tag, int off); +static void freebsdPciCfgWrite(PCITAG, int off, CARD32 val); +static void freebsdPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits); + +static pciBusFuncs_t freebsdFuncs0 = { +/* pciReadLong */ freebsdPciCfgRead, +/* pciWriteLong */ freebsdPciCfgWrite, +/* pciSetBitsLong */ freebsdPciCfgSetBits, +/* pciAddrHostToBus */ pciAddrNOOP, +/* pciAddrBusToHost */ pciAddrNOOP +}; + +static pciBusInfo_t freebsdPci0 = { +/* configMech */ PCI_CFG_MECH_OTHER, +/* numDevices */ 32, +/* secondary */ FALSE, +/* primary_bus */ 0, +#ifdef PowerMAX_OS +/* ppc_io_base */ 0, +/* ppc_io_size */ 0, +#endif +/* funcs */ &freebsdFuncs0, +/* pciBusPriv */ NULL, +/* bridge */ NULL +}; + +#if !defined(__OpenBSD__) +#if X_BYTE_ORDER == X_BIG_ENDIAN +#ifdef __sparc__ +#ifndef ASI_PL +#define ASI_PL 0x88 +#endif +#define PCI_CPU(val) ({ \ +int __ret; \ +__asm__ __volatile__("lduwa [%1] %2, %0" : "=r" (__ret) : "r" (&val), "i" (ASI_PL)); \ +__ret; \ +}) +#else +#define PCI_CPU(val) (((val >> 24) & 0x000000ff) | \ + ((val >> 8) & 0x0000ff00) | \ + ((val << 8) & 0x00ff0000) | \ + ((val << 24) & 0xff000000)) +#endif +#else +#define PCI_CPU(val) (val) +#endif +#else /* ! OpenBSD */ +/* OpenBSD has already the bytes in the right order + for all architectures */ +#define PCI_CPU(val) (val) +#endif + + +#define BUS(tag) (((tag)>>16)&0xff) +#define DFN(tag) (((tag)>>8)&0xff) + +static int pciFd = -1; + +void +freebsdPciInit() +{ + pciFd = open("/dev/pci", O_RDWR); + if (pciFd < 0) + return; + + pciNumBuses = 1; + pciBusInfo[0] = &freebsdPci0; + pciFindFirstFP = pciGenFindFirst; + pciFindNextFP = pciGenFindNext; +} + +static CARD32 +freebsdPciCfgRead(PCITAG tag, int off) +{ + struct pci_io io; + int error; + io.pi_sel.pc_bus = BUS(tag); + io.pi_sel.pc_dev = DFN(tag) >> 3; + io.pi_sel.pc_func = DFN(tag) & 7; + io.pi_reg = off; + io.pi_width = 4; + error = ioctl(pciFd, PCIOCREAD, &io); + if (error) + return ~0; + return PCI_CPU(io.pi_data); +} + +static void +freebsdPciCfgWrite(PCITAG tag, int off, CARD32 val) +{ + struct pci_io io; + io.pi_sel.pc_bus = BUS(tag); + io.pi_sel.pc_dev = DFN(tag) >> 3; + io.pi_sel.pc_func = DFN(tag) & 7; + io.pi_reg = off; + io.pi_width = 4; + io.pi_data = PCI_CPU(val); + ioctl(pciFd, PCIOCWRITE, &io); +} + +static void +freebsdPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits) +{ + CARD32 val = freebsdPciCfgRead(tag, off); + val = (val & ~mask) | (bits & mask); + freebsdPciCfgWrite(tag, off, val); +} |