1537078d8f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
144 lines
4.2 KiB
C
144 lines
4.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier
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* Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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/*
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* Chipset fixups.
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*
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* These routines are invoked during the probe phase for devices which
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* typically don't have specific device drivers, but which require
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* some cleaning up.
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*/
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static int fixup_pci_probe(device_t dev);
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static void fixwsc_natoma(device_t dev);
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static void fixc1_nforce2(device_t dev);
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static device_method_t fixup_pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, fixup_pci_probe),
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DEVMETHOD(device_attach, bus_generic_attach),
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{ 0, 0 }
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};
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static driver_t fixup_pci_driver = {
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"fixup_pci",
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fixup_pci_methods,
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0,
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};
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static devclass_t fixup_pci_devclass;
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DRIVER_MODULE(fixup_pci, pci, fixup_pci_driver, fixup_pci_devclass, 0, 0);
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static int
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fixup_pci_probe(device_t dev)
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{
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switch (pci_get_devid(dev)) {
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case 0x12378086: /* Intel 82440FX (Natoma) */
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fixwsc_natoma(dev);
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break;
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case 0x01e010de: /* nVidia nForce2 */
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fixc1_nforce2(dev);
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break;
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}
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return(ENXIO);
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}
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static void
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fixwsc_natoma(device_t dev)
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{
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int pmccfg;
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pmccfg = pci_read_config(dev, 0x50, 2);
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#if defined(SMP)
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if (pmccfg & 0x8000) {
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device_printf(dev, "correcting Natoma config for SMP\n");
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pmccfg &= ~0x8000;
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pci_write_config(dev, 0x50, pmccfg, 2);
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}
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#else
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if ((pmccfg & 0x8000) == 0) {
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device_printf(dev, "correcting Natoma config for non-SMP\n");
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pmccfg |= 0x8000;
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pci_write_config(dev, 0x50, pmccfg, 2);
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}
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#endif
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}
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/*
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* Set the SYSTEM_IDLE_TIMEOUT to 80 ns on nForce2 systems to work
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* around a hang that is triggered when the CPU generates a very fast
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* CONNECT/HALT cycle sequence. Specifically, the hang can result in
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* the lapic timer being stopped.
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*
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* This requires changing the value for config register at offset 0x6c
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* for the Host-PCI bridge at bus/dev/function 0/0/0:
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*
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* Chip Current Value New Value
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* ---- ---------- ----------
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* C17 0x1F0FFF01 0x1F01FF01
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* C18D 0x9F0FFF01 0x9F01FF01
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*
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* We do this by always clearing the bits in 0x000e0000.
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*
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* See also: http://lkml.org/lkml/2004/5/3/157
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*/
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static void
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fixc1_nforce2(device_t dev)
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{
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uint32_t val;
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if (pci_get_bus(dev) == 0 && pci_get_slot(dev) == 0 &&
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pci_get_function(dev) == 0) {
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val = pci_read_config(dev, 0x6c, 4);
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if (val & 0x000e0000) {
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device_printf(dev,
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"correcting nForce2 C1 CPU disconnect hangs\n");
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val &= ~0x000e0000;
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pci_write_config(dev, 0x6c, val, 4);
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}
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}
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}
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