1 /*- 2 * Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier 3 * Copyright (c) 2000 Michael Smith <msmith@freebsd.org> 4 * Copyright (c) 2000 BSDi 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/module.h> 38 #include <sys/systm.h> 39 #include <sys/bus.h> 40 41 #include <dev/pci/pcivar.h> 42 #include <dev/pci/pcireg.h> 43 44 /* 45 * Chipset fixups. 46 * 47 * These routines are invoked during the probe phase for devices which 48 * typically don't have specific device drivers, but which require 49 * some cleaning up. 50 */ 51 52 static int fixup_pci_probe(device_t dev); 53 static void fixwsc_natoma(device_t dev); 54 55 static device_method_t fixup_pci_methods[] = { 56 /* Device interface */ 57 DEVMETHOD(device_probe, fixup_pci_probe), 58 DEVMETHOD(device_attach, bus_generic_attach), 59 { 0, 0 } 60 }; 61 62 static driver_t fixup_pci_driver = { 63 "fixup_pci", 64 fixup_pci_methods, 65 0, 66 }; 67 68 static devclass_t fixup_pci_devclass; 69 70 DRIVER_MODULE(fixup_pci, pci, fixup_pci_driver, fixup_pci_devclass, 0, 0); 71 72 static int 73 fixup_pci_probe(device_t dev) 74 { 75 switch (pci_get_devid(dev)) { 76 case 0x12378086: /* Intel 82440FX (Natoma) */ 77 fixwsc_natoma(dev); 78 break; 79 } 80 return(ENXIO); 81 } 82 83 static void 84 fixwsc_natoma(device_t dev) 85 { 86 int pmccfg; 87 88 pmccfg = pci_read_config(dev, 0x50, 2); 89 #if defined(SMP) 90 if (pmccfg & 0x8000) { 91 printf("Correcting Natoma config for SMP\n"); 92 pmccfg &= ~0x8000; 93 pci_write_config(dev, 0x50, pmccfg, 2); 94 } 95 #else 96 if ((pmccfg & 0x8000) == 0) { 97 printf("Correcting Natoma config for non-SMP\n"); 98 pmccfg |= 0x8000; 99 pci_write_config(dev, 0x50, pmccfg, 2); 100 } 101 #endif 102 } 103