diff options
Diffstat (limited to 'sys/dev/pci/eisa_pci.c')
| -rw-r--r-- | sys/dev/pci/eisa_pci.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/sys/dev/pci/eisa_pci.c b/sys/dev/pci/eisa_pci.c new file mode 100644 index 0000000..1f2186d --- /dev/null +++ b/sys/dev/pci/eisa_pci.c @@ -0,0 +1,128 @@ +/*- + * 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. + * + * $FreeBSD$ + */ + +/* + * PCI:EISA bridge support + */ + +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/bus.h> + +#include <pci/pcivar.h> +#include <pci/pcireg.h> + +static int eisab_probe(device_t dev); +static int eisab_attach(device_t dev); + +static device_method_t eisab_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, eisab_probe), + DEVMETHOD(device_attach, eisab_attach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + DEVMETHOD(device_suspend, bus_generic_suspend), + DEVMETHOD(device_resume, bus_generic_resume), + + /* Bus interface */ + DEVMETHOD(bus_print_child, bus_generic_print_child), + DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), + DEVMETHOD(bus_release_resource, bus_generic_release_resource), + DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), + DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), + DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), + DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), + + { 0, 0 } +}; + +static driver_t eisab_driver = { + "eisab", + eisab_methods, + 0, +}; + +static devclass_t eisab_devclass; + +DRIVER_MODULE(eisab, pci, eisab_driver, eisab_devclass, 0, 0); + +static int +eisab_probe(device_t dev) +{ + int matched = 0; + + /* + * Generic match by class/subclass. + */ + if ((pci_get_class(dev) == PCIC_BRIDGE) && + (pci_get_subclass(dev) == PCIS_BRIDGE_EISA)) + matched = 1; + + /* + * Some bridges don't correctly report their class. + */ + switch (pci_get_devid(dev)) { + case 0x04828086: /* reports PCI-HOST class (!) */ + matched = 1; + break; + default: + break; + } + + if (matched) { + device_set_desc(dev, "PCI-EISA bridge"); + return(-10000); + } + return(ENXIO); +} + +static int +eisab_attach(device_t dev) +{ + device_t child; + + /* + * Attach an EISA bus. Note that we can only have one EISA bus. + */ + child = device_add_child(dev, "eisa", 0); + if (child != NULL) + return(bus_generic_attach(dev)); + + /* + * Attach an ISA bus as well (should this be a child of EISA?) + */ + child = device_add_child(dev, "isa", 0); + if (child != NULL) + bus_generic_attach(dev); + + return(0); +} + |
