diff options
author | msmith <msmith@FreeBSD.org> | 2000-12-08 22:11:23 +0000 |
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committer | msmith <msmith@FreeBSD.org> | 2000-12-08 22:11:23 +0000 |
commit | c27f2d3c492a3d78680bb4c52f0be2c345735e1d (patch) | |
tree | ab8e18698d3c3ee4b4443c78e8ba86065bed1ff3 /sys/dev/pci/fixup_pci.c | |
parent | 3e12cdd63653239c3c71bf1e7042f1149134e630 (diff) | |
download | FreeBSD-src-c27f2d3c492a3d78680bb4c52f0be2c345735e1d.zip FreeBSD-src-c27f2d3c492a3d78680bb4c52f0be2c345735e1d.tar.gz |
Next phase in the PCI subsystem cleanup.
- Move PCI core code to dev/pci.
- Split bridge code out into separate modules.
- Remove the descriptive strings from the bridge drivers. If you
want to know what a device is, use pciconf. Add support for
broadly identifying devices based on class/subclass, and for
parsing a preloaded device identification database so that if
you want to waste the memory, you can identify *anything* we know
about.
- Remove machine-dependant code from the core PCI code. APIC interrupt
mapping is performed by shadowing the intline register in machine-
dependant code.
- Bring interrupt routing support to the Alpha
(although many platforms don't yet support routing or mapping
interrupts entirely correctly). This resulted in spamming
<sys/bus.h> into more places than it really should have gone.
- Put sys/dev on the kernel/modules include path. This avoids
having to change *all* the pci*.h includes.
Diffstat (limited to 'sys/dev/pci/fixup_pci.c')
-rw-r--r-- | sys/dev/pci/fixup_pci.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/sys/dev/pci/fixup_pci.c b/sys/dev/pci/fixup_pci.c new file mode 100644 index 0000000..c2b57eb --- /dev/null +++ b/sys/dev/pci/fixup_pci.c @@ -0,0 +1,116 @@ +/*- + * Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier + * Copyright (c) 2000 Michael Smith <msmith@freebsd.org> + * Copyright (c) 2000 BSDi + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/kernel.h> +#include <sys/bus.h> + +#include <pci/pcivar.h> +#include <pci/pcireg.h> + +/* + * Chipset fixups. + * + * These routines are invoked during the probe phase for devices which + * typically don't have specific device drivers, but which require + * some cleaning up. + */ + +static int fixup_pci_probe(device_t dev); +static void fixbushigh_i1225(device_t dev); +static void fixwsc_natoma(device_t dev); + +static device_method_t fixup_pci_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, fixup_pci_probe), + DEVMETHOD(device_attach, bus_generic_attach), + { 0, 0 } +}; + +static driver_t fixup_pci_driver = { + "fixup_pci", + fixup_pci_methods, + 0, +}; + +static devclass_t fixup_pci_devclass; + +DRIVER_MODULE(fixup_pci, pci, fixup_pci_driver, fixup_pci_devclass, 0, 0); + +static int +fixup_pci_probe(device_t dev) +{ + switch (pci_get_devid(dev)) { + case 0x12258086: /* Intel 82454KX/GX (Orion) */ + fixbushigh_i1225(dev); + break; + case 0x12378086: /* Intel 82440FX (Natoma) */ + fixwsc_natoma(dev); + break; + } + return(ENXIO); +} + +static void +fixbushigh_i1225(device_t dev) +{ + int supbus; + + supbus = pci_read_config(dev, 0x41, 1); + if (supbus != 0xff) { + pci_set_secondarybus(dev, supbus + 1); + pci_set_subordinatebus(dev, supbus + 1); + } +} + +static void +fixwsc_natoma(device_t dev) +{ + int pmccfg; + + pmccfg = pci_read_config(dev, 0x50, 2); +#if defined(SMP) + if (pmccfg & 0x8000) { + printf("Correcting Natoma config for SMP\n"); + pmccfg &= ~0x8000; + pci_write_config(dev, 0x50, 2, pmccfg); + } +#else + if ((pmccfg & 0x8000) == 0) { + printf("Correcting Natoma config for non-SMP\n"); + pmccfg |= 0x8000; + pci_write_config(dev, 0x50, 2, pmccfg); + } +#endif +} |