fixup_pci.c revision 69783
169783Smsmith/*- 269783Smsmith * Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier 369783Smsmith * Copyright (c) 2000 Michael Smith <msmith@freebsd.org> 469783Smsmith * Copyright (c) 2000 BSDi 569783Smsmith * All rights reserved. 669783Smsmith * 769783Smsmith * Redistribution and use in source and binary forms, with or without 869783Smsmith * modification, are permitted provided that the following conditions 969783Smsmith * are met: 1069783Smsmith * 1. Redistributions of source code must retain the above copyright 1169783Smsmith * notice, this list of conditions and the following disclaimer. 1269783Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1369783Smsmith * notice, this list of conditions and the following disclaimer in the 1469783Smsmith * documentation and/or other materials provided with the distribution. 1569783Smsmith * 3. The name of the author may not be used to endorse or promote products 1669783Smsmith * derived from this software without specific prior written permission. 1769783Smsmith * 1869783Smsmith * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1969783Smsmith * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2069783Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2169783Smsmith * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2269783Smsmith * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2369783Smsmith * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2469783Smsmith * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2569783Smsmith * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2669783Smsmith * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2769783Smsmith * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2869783Smsmith * SUCH DAMAGE. 2969783Smsmith * 3069783Smsmith * $FreeBSD: head/sys/dev/pci/fixup_pci.c 69783 2000-12-08 22:11:23Z msmith $ 3169783Smsmith */ 3269783Smsmith 3369783Smsmith#include <sys/param.h> 3469783Smsmith#include <sys/systm.h> 3569783Smsmith#include <sys/malloc.h> 3669783Smsmith#include <sys/kernel.h> 3769783Smsmith#include <sys/bus.h> 3869783Smsmith 3969783Smsmith#include <pci/pcivar.h> 4069783Smsmith#include <pci/pcireg.h> 4169783Smsmith 4269783Smsmith/* 4369783Smsmith * Chipset fixups. 4469783Smsmith * 4569783Smsmith * These routines are invoked during the probe phase for devices which 4669783Smsmith * typically don't have specific device drivers, but which require 4769783Smsmith * some cleaning up. 4869783Smsmith */ 4969783Smsmith 5069783Smsmithstatic int fixup_pci_probe(device_t dev); 5169783Smsmithstatic void fixbushigh_i1225(device_t dev); 5269783Smsmithstatic void fixwsc_natoma(device_t dev); 5369783Smsmith 5469783Smsmithstatic device_method_t fixup_pci_methods[] = { 5569783Smsmith /* Device interface */ 5669783Smsmith DEVMETHOD(device_probe, fixup_pci_probe), 5769783Smsmith DEVMETHOD(device_attach, bus_generic_attach), 5869783Smsmith { 0, 0 } 5969783Smsmith}; 6069783Smsmith 6169783Smsmithstatic driver_t fixup_pci_driver = { 6269783Smsmith "fixup_pci", 6369783Smsmith fixup_pci_methods, 6469783Smsmith 0, 6569783Smsmith}; 6669783Smsmith 6769783Smsmithstatic devclass_t fixup_pci_devclass; 6869783Smsmith 6969783SmsmithDRIVER_MODULE(fixup_pci, pci, fixup_pci_driver, fixup_pci_devclass, 0, 0); 7069783Smsmith 7169783Smsmithstatic int 7269783Smsmithfixup_pci_probe(device_t dev) 7369783Smsmith{ 7469783Smsmith switch (pci_get_devid(dev)) { 7569783Smsmith case 0x12258086: /* Intel 82454KX/GX (Orion) */ 7669783Smsmith fixbushigh_i1225(dev); 7769783Smsmith break; 7869783Smsmith case 0x12378086: /* Intel 82440FX (Natoma) */ 7969783Smsmith fixwsc_natoma(dev); 8069783Smsmith break; 8169783Smsmith } 8269783Smsmith return(ENXIO); 8369783Smsmith} 8469783Smsmith 8569783Smsmithstatic void 8669783Smsmithfixbushigh_i1225(device_t dev) 8769783Smsmith{ 8869783Smsmith int supbus; 8969783Smsmith 9069783Smsmith supbus = pci_read_config(dev, 0x41, 1); 9169783Smsmith if (supbus != 0xff) { 9269783Smsmith pci_set_secondarybus(dev, supbus + 1); 9369783Smsmith pci_set_subordinatebus(dev, supbus + 1); 9469783Smsmith } 9569783Smsmith} 9669783Smsmith 9769783Smsmithstatic void 9869783Smsmithfixwsc_natoma(device_t dev) 9969783Smsmith{ 10069783Smsmith int pmccfg; 10169783Smsmith 10269783Smsmith pmccfg = pci_read_config(dev, 0x50, 2); 10369783Smsmith#if defined(SMP) 10469783Smsmith if (pmccfg & 0x8000) { 10569783Smsmith printf("Correcting Natoma config for SMP\n"); 10669783Smsmith pmccfg &= ~0x8000; 10769783Smsmith pci_write_config(dev, 0x50, 2, pmccfg); 10869783Smsmith } 10969783Smsmith#else 11069783Smsmith if ((pmccfg & 0x8000) == 0) { 11169783Smsmith printf("Correcting Natoma config for non-SMP\n"); 11269783Smsmith pmccfg |= 0x8000; 11369783Smsmith pci_write_config(dev, 0x50, 2, pmccfg); 11469783Smsmith } 11569783Smsmith#endif 11669783Smsmith} 117