fixup_pci.c revision 119285
1141296Sdas/*- 2141296Sdas * Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier 32116Sjkh * Copyright (c) 2000 Michael Smith <msmith@freebsd.org> 42116Sjkh * Copyright (c) 2000 BSDi 52116Sjkh * All rights reserved. 62116Sjkh * 7141296Sdas * Redistribution and use in source and binary forms, with or without 82116Sjkh * modification, are permitted provided that the following conditions 9141296Sdas * are met: 102116Sjkh * 1. Redistributions of source code must retain the above copyright 112116Sjkh * notice, this list of conditions and the following disclaimer. 12141296Sdas * 2. Redistributions in binary form must reproduce the above copyright 132116Sjkh * notice, this list of conditions and the following disclaimer in the 142116Sjkh * documentation and/or other materials provided with the distribution. 15176451Sdas * 3. The name of the author may not be used to endorse or promote products 16176451Sdas * derived from this software without specific prior written permission. 172116Sjkh * 182116Sjkh * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 192116Sjkh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 202116Sjkh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 212116Sjkh * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 222116Sjkh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 232116Sjkh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24271651Skargl * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25271651Skargl * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 262116Sjkh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 272116Sjkh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 282116Sjkh * SUCH DAMAGE. 292116Sjkh * 302116Sjkh * $FreeBSD: head/sys/dev/pci/fixup_pci.c 119285 2003-08-22 06:42:59Z imp $ 3197413Salfred */ 3297413Salfred 332116Sjkh#include <sys/param.h> 342116Sjkh#include <sys/systm.h> 352116Sjkh#include <sys/malloc.h> 36271651Skargl#include <sys/kernel.h> 37271651Skargl#include <sys/bus.h> 38271651Skargl 39271651Skargl#include <dev/pci/pcivar.h> 40#include <dev/pci/pcireg.h> 41 42/* 43 * Chipset fixups. 44 * 45 * These routines are invoked during the probe phase for devices which 46 * typically don't have specific device drivers, but which require 47 * some cleaning up. 48 */ 49 50static int fixup_pci_probe(device_t dev); 51static void fixwsc_natoma(device_t dev); 52 53static device_method_t fixup_pci_methods[] = { 54 /* Device interface */ 55 DEVMETHOD(device_probe, fixup_pci_probe), 56 DEVMETHOD(device_attach, bus_generic_attach), 57 { 0, 0 } 58}; 59 60static driver_t fixup_pci_driver = { 61 "fixup_pci", 62 fixup_pci_methods, 63 0, 64}; 65 66static devclass_t fixup_pci_devclass; 67 68DRIVER_MODULE(fixup_pci, pci, fixup_pci_driver, fixup_pci_devclass, 0, 0); 69 70static int 71fixup_pci_probe(device_t dev) 72{ 73 switch (pci_get_devid(dev)) { 74 case 0x12378086: /* Intel 82440FX (Natoma) */ 75 fixwsc_natoma(dev); 76 break; 77 } 78 return(ENXIO); 79} 80 81static void 82fixwsc_natoma(device_t dev) 83{ 84 int pmccfg; 85 86 pmccfg = pci_read_config(dev, 0x50, 2); 87#if defined(SMP) 88 if (pmccfg & 0x8000) { 89 printf("Correcting Natoma config for SMP\n"); 90 pmccfg &= ~0x8000; 91 pci_write_config(dev, 0x50, pmccfg, 2); 92 } 93#else 94 if ((pmccfg & 0x8000) == 0) { 95 printf("Correcting Natoma config for non-SMP\n"); 96 pmccfg |= 0x8000; 97 pci_write_config(dev, 0x50, pmccfg, 2); 98 } 99#endif 100} 101