1264 lines
32 KiB
C
1264 lines
32 KiB
C
/*
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* Copyright (c) 1997, Stefan Esser <se@freebsd.org>
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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 unmodified, this list of conditions, and the following
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#include "opt_bus.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/linker.h>
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#include <sys/fcntl.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <vm/vm_extern.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <sys/pciio.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#include "pcib_if.h"
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#include "pci_if.h"
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static u_int32_t pci_mapbase(unsigned mapreg);
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static int pci_maptype(unsigned mapreg);
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static int pci_mapsize(unsigned testval);
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static int pci_maprange(unsigned mapreg);
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static void pci_fixancient(pcicfgregs *cfg);
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static void pci_hdrtypedata(device_t pcib, int b, int s, int f,
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pcicfgregs *cfg);
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static struct pci_devinfo *pci_read_device(device_t pcib, int b, int s, int f);
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static void pci_read_extcap(device_t pcib, pcicfgregs *cfg);
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static void pci_print_verbose(struct pci_devinfo *dinfo);
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static int pci_porten(device_t pcib, int b, int s, int f);
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static int pci_memen(device_t pcib, int b, int s, int f);
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static int pci_add_map(device_t pcib, int b, int s, int f, int reg,
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struct resource_list *rl);
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static void pci_add_resources(device_t pcib, int b, int s, int f,
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device_t dev);
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static void pci_add_children(device_t dev, int busno);
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static int pci_probe(device_t dev);
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static int pci_print_resources(struct resource_list *rl,
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const char *name, int type,
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const char *format);
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static int pci_print_child(device_t dev, device_t child);
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static void pci_probe_nomatch(device_t dev, device_t child);
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static int pci_describe_parse_line(char **ptr, int *vendor,
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int *device, char **desc);
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static char *pci_describe_device(device_t dev);
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static int pci_read_ivar(device_t dev, device_t child, int which,
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uintptr_t *result);
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static int pci_write_ivar(device_t dev, device_t child, int which,
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uintptr_t value);
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static struct resource *pci_alloc_resource(device_t dev, device_t child,
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int type, int *rid, u_long start,
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u_long end, u_long count, u_int flags);
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static void pci_delete_resource(device_t dev, device_t child,
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int type, int rid);
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static struct resource_list *pci_get_resource_list (device_t dev, device_t child);
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static u_int32_t pci_read_config_method(device_t dev, device_t child,
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int reg, int width);
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static void pci_write_config_method(device_t dev, device_t child,
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int reg, u_int32_t val, int width);
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static int pci_modevent(module_t mod, int what, void *arg);
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static device_method_t pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, pci_probe),
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DEVMETHOD(device_attach, bus_generic_attach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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/* Bus interface */
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DEVMETHOD(bus_print_child, pci_print_child),
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DEVMETHOD(bus_probe_nomatch, pci_probe_nomatch),
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DEVMETHOD(bus_read_ivar, pci_read_ivar),
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DEVMETHOD(bus_write_ivar, pci_write_ivar),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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DEVMETHOD(bus_get_resource_list,pci_get_resource_list),
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DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
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DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
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DEVMETHOD(bus_delete_resource, pci_delete_resource),
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DEVMETHOD(bus_alloc_resource, pci_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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/* PCI interface */
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DEVMETHOD(pci_read_config, pci_read_config_method),
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DEVMETHOD(pci_write_config, pci_write_config_method),
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{ 0, 0 }
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};
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static driver_t pci_driver = {
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"pci",
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pci_methods,
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0, /* no softc */
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};
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static devclass_t pci_devclass;
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DRIVER_MODULE(pci, pcib, pci_driver, pci_devclass, pci_modevent, 0);
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DRIVER_MODULE(pci, acpi_pcib, pci_driver, pci_devclass, pci_modevent, 0);
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static char *pci_vendordata;
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static size_t pci_vendordata_size;
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struct pci_quirk {
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u_int32_t devid; /* Vendor/device of the card */
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int type;
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#define PCI_QUIRK_MAP_REG 1 /* PCI map register in wierd place */
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int arg1;
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int arg2;
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};
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struct pci_quirk pci_quirks[] = {
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/*
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* The Intel 82371AB has a map register at offset 0x90.
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*/
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{ 0x71138086, PCI_QUIRK_MAP_REG, 0x90, 0 },
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{ 0 }
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};
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/* map register information */
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#define PCI_MAPMEM 0x01 /* memory map */
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#define PCI_MAPMEMP 0x02 /* prefetchable memory map */
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#define PCI_MAPPORT 0x04 /* port map */
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u_int32_t pci_numdevs = 0;
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/* return base address of memory or port map */
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static u_int32_t
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pci_mapbase(unsigned mapreg)
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{
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int mask = 0x03;
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if ((mapreg & 0x01) == 0)
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mask = 0x0f;
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return (mapreg & ~mask);
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}
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/* return map type of memory or port map */
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static int
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pci_maptype(unsigned mapreg)
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{
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static u_int8_t maptype[0x10] = {
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PCI_MAPMEM, PCI_MAPPORT,
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PCI_MAPMEM, 0,
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PCI_MAPMEM, PCI_MAPPORT,
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0, 0,
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PCI_MAPMEM|PCI_MAPMEMP, PCI_MAPPORT,
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PCI_MAPMEM|PCI_MAPMEMP, 0,
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PCI_MAPMEM|PCI_MAPMEMP, PCI_MAPPORT,
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0, 0,
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};
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return maptype[mapreg & 0x0f];
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}
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/* return log2 of map size decoded for memory or port map */
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static int
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pci_mapsize(unsigned testval)
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{
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int ln2size;
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testval = pci_mapbase(testval);
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ln2size = 0;
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if (testval != 0) {
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while ((testval & 1) == 0)
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{
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ln2size++;
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testval >>= 1;
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}
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}
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return (ln2size);
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}
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/* return log2 of address range supported by map register */
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static int
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pci_maprange(unsigned mapreg)
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{
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int ln2range = 0;
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switch (mapreg & 0x07) {
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case 0x00:
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case 0x01:
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case 0x05:
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ln2range = 32;
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break;
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case 0x02:
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ln2range = 20;
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break;
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case 0x04:
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ln2range = 64;
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break;
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}
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return (ln2range);
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}
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/* adjust some values from PCI 1.0 devices to match 2.0 standards ... */
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static void
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pci_fixancient(pcicfgregs *cfg)
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{
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if (cfg->hdrtype != 0)
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return;
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/* PCI to PCI bridges use header type 1 */
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if (cfg->baseclass == PCIC_BRIDGE && cfg->subclass == PCIS_BRIDGE_PCI)
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cfg->hdrtype = 1;
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}
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/* extract header type specific config data */
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static void
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pci_hdrtypedata(device_t pcib, int b, int s, int f, pcicfgregs *cfg)
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{
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#define REG(n, w) PCIB_READ_CONFIG(pcib, b, s, f, n, w)
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switch (cfg->hdrtype) {
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case 0:
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cfg->subvendor = REG(PCIR_SUBVEND_0, 2);
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cfg->subdevice = REG(PCIR_SUBDEV_0, 2);
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cfg->nummaps = PCI_MAXMAPS_0;
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break;
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case 1:
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cfg->subvendor = REG(PCIR_SUBVEND_1, 2);
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cfg->subdevice = REG(PCIR_SUBDEV_1, 2);
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cfg->nummaps = PCI_MAXMAPS_1;
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break;
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case 2:
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cfg->subvendor = REG(PCIR_SUBVEND_2, 2);
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cfg->subdevice = REG(PCIR_SUBDEV_2, 2);
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cfg->nummaps = PCI_MAXMAPS_2;
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break;
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}
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#undef REG
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}
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/* read configuration header into pcicfgregs structure */
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static struct pci_devinfo *
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pci_read_device(device_t pcib, int b, int s, int f)
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{
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#define REG(n, w) PCIB_READ_CONFIG(pcib, b, s, f, n, w)
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pcicfgregs *cfg = NULL;
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struct pci_devinfo *devlist_entry;
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struct devlist *devlist_head;
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devlist_head = &pci_devq;
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devlist_entry = NULL;
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if (PCIB_READ_CONFIG(pcib, b, s, f, PCIR_DEVVENDOR, 4) != -1) {
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devlist_entry = malloc(sizeof(struct pci_devinfo),
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M_DEVBUF, M_WAITOK | M_ZERO);
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if (devlist_entry == NULL)
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return (NULL);
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cfg = &devlist_entry->cfg;
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cfg->bus = b;
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cfg->slot = s;
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cfg->func = f;
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cfg->vendor = REG(PCIR_VENDOR, 2);
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cfg->device = REG(PCIR_DEVICE, 2);
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cfg->cmdreg = REG(PCIR_COMMAND, 2);
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cfg->statreg = REG(PCIR_STATUS, 2);
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cfg->baseclass = REG(PCIR_CLASS, 1);
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cfg->subclass = REG(PCIR_SUBCLASS, 1);
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cfg->progif = REG(PCIR_PROGIF, 1);
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cfg->revid = REG(PCIR_REVID, 1);
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cfg->hdrtype = REG(PCIR_HEADERTYPE, 1);
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cfg->cachelnsz = REG(PCIR_CACHELNSZ, 1);
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cfg->lattimer = REG(PCIR_LATTIMER, 1);
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cfg->intpin = REG(PCIR_INTPIN, 1);
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cfg->intline = REG(PCIR_INTLINE, 1);
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cfg->mingnt = REG(PCIR_MINGNT, 1);
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cfg->maxlat = REG(PCIR_MAXLAT, 1);
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cfg->mfdev = (cfg->hdrtype & PCIM_MFDEV) != 0;
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cfg->hdrtype &= ~PCIM_MFDEV;
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pci_fixancient(cfg);
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pci_hdrtypedata(pcib, b, s, f, cfg);
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if (REG(PCIR_STATUS, 2) & PCIM_STATUS_CAPPRESENT)
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pci_read_extcap(pcib, cfg);
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STAILQ_INSERT_TAIL(devlist_head, devlist_entry, pci_links);
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devlist_entry->conf.pc_sel.pc_bus = cfg->bus;
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devlist_entry->conf.pc_sel.pc_dev = cfg->slot;
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devlist_entry->conf.pc_sel.pc_func = cfg->func;
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devlist_entry->conf.pc_hdr = cfg->hdrtype;
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devlist_entry->conf.pc_subvendor = cfg->subvendor;
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devlist_entry->conf.pc_subdevice = cfg->subdevice;
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devlist_entry->conf.pc_vendor = cfg->vendor;
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devlist_entry->conf.pc_device = cfg->device;
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devlist_entry->conf.pc_class = cfg->baseclass;
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devlist_entry->conf.pc_subclass = cfg->subclass;
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devlist_entry->conf.pc_progif = cfg->progif;
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devlist_entry->conf.pc_revid = cfg->revid;
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pci_numdevs++;
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pci_generation++;
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}
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return (devlist_entry);
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#undef REG
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}
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static void
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pci_read_extcap(device_t pcib, pcicfgregs *cfg)
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{
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#define REG(n, w) PCIB_READ_CONFIG(pcib, cfg->bus, cfg->slot, cfg->func, n, w)
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int ptr, nextptr, ptrptr;
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switch (cfg->hdrtype) {
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case 0:
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ptrptr = 0x34;
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break;
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case 2:
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ptrptr = 0x14;
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break;
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default:
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return; /* no extended capabilities support */
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}
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nextptr = REG(ptrptr, 1); /* sanity check? */
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/*
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* Read capability entries.
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*/
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while (nextptr != 0) {
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/* Sanity check */
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if (nextptr > 255) {
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printf("illegal PCI extended capability offset %d\n",
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nextptr);
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return;
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}
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/* Find the next entry */
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ptr = nextptr;
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nextptr = REG(ptr + 1, 1);
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/* Process this entry */
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switch (REG(ptr, 1)) {
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case 0x01: /* PCI power management */
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if (cfg->pp_cap == 0) {
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cfg->pp_cap = REG(ptr + PCIR_POWER_CAP, 2);
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cfg->pp_status = ptr + PCIR_POWER_STATUS;
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cfg->pp_pmcsr = ptr + PCIR_POWER_PMCSR;
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if ((nextptr - ptr) > PCIR_POWER_DATA)
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cfg->pp_data = ptr + PCIR_POWER_DATA;
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}
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break;
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default:
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break;
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}
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}
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#undef REG
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}
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#if 0
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/* free pcicfgregs structure and all depending data structures */
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static int
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pci_freecfg(struct pci_devinfo *dinfo)
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{
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struct devlist *devlist_head;
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devlist_head = &pci_devq;
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if (dinfo->cfg.map != NULL)
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free(dinfo->cfg.map, M_DEVBUF);
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/* XXX this hasn't been tested */
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STAILQ_REMOVE(devlist_head, dinfo, pci_devinfo, pci_links);
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free(dinfo, M_DEVBUF);
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/* increment the generation count */
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pci_generation++;
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/* we're losing one device */
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pci_numdevs--;
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return (0);
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}
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#endif
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/*
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* PCI power manangement
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*/
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int
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pci_set_powerstate(device_t dev, int state)
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{
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struct pci_devinfo *dinfo = device_get_ivars(dev);
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pcicfgregs *cfg = &dinfo->cfg;
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u_int16_t status;
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int result;
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if (cfg->pp_cap != 0) {
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status = pci_read_config(dev, cfg->pp_status, 2) & ~PCIM_PSTAT_DMASK;
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result = 0;
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switch (state) {
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case PCI_POWERSTATE_D0:
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status |= PCIM_PSTAT_D0;
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break;
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case PCI_POWERSTATE_D1:
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if (cfg->pp_cap & PCIM_PCAP_D1SUPP) {
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status |= PCIM_PSTAT_D1;
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} else {
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result = EOPNOTSUPP;
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}
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break;
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case PCI_POWERSTATE_D2:
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if (cfg->pp_cap & PCIM_PCAP_D2SUPP) {
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status |= PCIM_PSTAT_D2;
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} else {
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result = EOPNOTSUPP;
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}
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break;
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case PCI_POWERSTATE_D3:
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status |= PCIM_PSTAT_D3;
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break;
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default:
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result = EINVAL;
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}
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if (result == 0)
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pci_write_config(dev, cfg->pp_status, status, 2);
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} else {
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result = ENXIO;
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}
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return(result);
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}
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int
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pci_get_powerstate(device_t dev)
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{
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struct pci_devinfo *dinfo = device_get_ivars(dev);
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pcicfgregs *cfg = &dinfo->cfg;
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u_int16_t status;
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int result;
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if (cfg->pp_cap != 0) {
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status = pci_read_config(dev, cfg->pp_status, 2);
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switch (status & PCIM_PSTAT_DMASK) {
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case PCIM_PSTAT_D0:
|
|
result = PCI_POWERSTATE_D0;
|
|
break;
|
|
case PCIM_PSTAT_D1:
|
|
result = PCI_POWERSTATE_D1;
|
|
break;
|
|
case PCIM_PSTAT_D2:
|
|
result = PCI_POWERSTATE_D2;
|
|
break;
|
|
case PCIM_PSTAT_D3:
|
|
result = PCI_POWERSTATE_D3;
|
|
break;
|
|
default:
|
|
result = PCI_POWERSTATE_UNKNOWN;
|
|
break;
|
|
}
|
|
} else {
|
|
/* No support, device is always at D0 */
|
|
result = PCI_POWERSTATE_D0;
|
|
}
|
|
return(result);
|
|
}
|
|
|
|
/*
|
|
* Some convenience functions for PCI device drivers.
|
|
*/
|
|
|
|
static __inline void
|
|
pci_set_command_bit(device_t dev, u_int16_t bit)
|
|
{
|
|
u_int16_t command;
|
|
|
|
command = pci_read_config(dev, PCIR_COMMAND, 2);
|
|
command |= bit;
|
|
pci_write_config(dev, PCIR_COMMAND, command, 2);
|
|
}
|
|
|
|
static __inline void
|
|
pci_clear_command_bit(device_t dev, u_int16_t bit)
|
|
{
|
|
u_int16_t command;
|
|
|
|
command = pci_read_config(dev, PCIR_COMMAND, 2);
|
|
command &= ~bit;
|
|
pci_write_config(dev, PCIR_COMMAND, command, 2);
|
|
}
|
|
|
|
void
|
|
pci_enable_busmaster(device_t dev)
|
|
{
|
|
pci_set_command_bit(dev, PCIM_CMD_BUSMASTEREN);
|
|
}
|
|
|
|
void
|
|
pci_disable_busmaster(device_t dev)
|
|
{
|
|
pci_clear_command_bit(dev, PCIM_CMD_BUSMASTEREN);
|
|
}
|
|
|
|
void
|
|
pci_enable_io(device_t dev, int space)
|
|
{
|
|
switch(space) {
|
|
case SYS_RES_IOPORT:
|
|
pci_set_command_bit(dev, PCIM_CMD_PORTEN);
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
pci_set_command_bit(dev, PCIM_CMD_MEMEN);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
pci_disable_io(device_t dev, int space)
|
|
{
|
|
switch(space) {
|
|
case SYS_RES_IOPORT:
|
|
pci_clear_command_bit(dev, PCIM_CMD_PORTEN);
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
pci_clear_command_bit(dev, PCIM_CMD_MEMEN);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* New style pci driver. Parent device is either a pci-host-bridge or a
|
|
* pci-pci-bridge. Both kinds are represented by instances of pcib.
|
|
*/
|
|
|
|
static void
|
|
pci_print_verbose(struct pci_devinfo *dinfo)
|
|
{
|
|
if (bootverbose) {
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
|
|
printf("found->\tvendor=0x%04x, dev=0x%04x, revid=0x%02x\n",
|
|
cfg->vendor, cfg->device, cfg->revid);
|
|
printf("\tbus=%d, slot=%d, func=%d\n",
|
|
cfg->bus, cfg->slot, cfg->func);
|
|
printf("\tclass=%02x-%02x-%02x, hdrtype=0x%02x, mfdev=%d\n",
|
|
cfg->baseclass, cfg->subclass, cfg->progif,
|
|
cfg->hdrtype, cfg->mfdev);
|
|
#ifdef PCI_DEBUG
|
|
printf("\tcmdreg=0x%04x, statreg=0x%04x, cachelnsz=%d (dwords)\n",
|
|
cfg->cmdreg, cfg->statreg, cfg->cachelnsz);
|
|
printf("\tlattimer=0x%02x (%d ns), mingnt=0x%02x (%d ns), maxlat=0x%02x (%d ns)\n",
|
|
cfg->lattimer, cfg->lattimer * 30,
|
|
cfg->mingnt, cfg->mingnt * 250, cfg->maxlat, cfg->maxlat * 250);
|
|
#endif /* PCI_DEBUG */
|
|
if (cfg->intpin > 0)
|
|
printf("\tintpin=%c, irq=%d\n", cfg->intpin +'a' -1, cfg->intline);
|
|
if (cfg->pp_cap) {
|
|
u_int16_t status;
|
|
|
|
status = pci_read_config(cfg->dev, cfg->pp_status, 2);
|
|
printf("\tpowerspec %d supports D0%s%s D3 current D%d\n",
|
|
cfg->pp_cap & PCIM_PCAP_SPEC,
|
|
cfg->pp_cap & PCIM_PCAP_D1SUPP ? " D1" : "",
|
|
cfg->pp_cap & PCIM_PCAP_D2SUPP ? " D2" : "",
|
|
status & PCIM_PSTAT_DMASK);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
pci_porten(device_t pcib, int b, int s, int f)
|
|
{
|
|
return (PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2)
|
|
& PCIM_CMD_PORTEN) != 0;
|
|
}
|
|
|
|
static int
|
|
pci_memen(device_t pcib, int b, int s, int f)
|
|
{
|
|
return (PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2)
|
|
& PCIM_CMD_MEMEN) != 0;
|
|
}
|
|
|
|
/*
|
|
* Add a resource based on a pci map register. Return 1 if the map
|
|
* register is a 32bit map register or 2 if it is a 64bit register.
|
|
*/
|
|
static int
|
|
pci_add_map(device_t pcib, int b, int s, int f, int reg,
|
|
struct resource_list *rl)
|
|
{
|
|
u_int32_t map;
|
|
u_int64_t base;
|
|
u_int8_t ln2size;
|
|
u_int8_t ln2range;
|
|
u_int32_t testval;
|
|
#ifdef PCI_ENABLE_IO_MODES
|
|
u_int16_t cmd;
|
|
#endif
|
|
int type;
|
|
|
|
map = PCIB_READ_CONFIG(pcib, b, s, f, reg, 4);
|
|
|
|
if (map == 0 || map == 0xffffffff)
|
|
return 1; /* skip invalid entry */
|
|
|
|
PCIB_WRITE_CONFIG(pcib, b, s, f, reg, 0xffffffff, 4);
|
|
testval = PCIB_READ_CONFIG(pcib, b, s, f, reg, 4);
|
|
PCIB_WRITE_CONFIG(pcib, b, s, f, reg, map, 4);
|
|
|
|
base = pci_mapbase(map);
|
|
if (pci_maptype(map) & PCI_MAPMEM)
|
|
type = SYS_RES_MEMORY;
|
|
else
|
|
type = SYS_RES_IOPORT;
|
|
ln2size = pci_mapsize(testval);
|
|
ln2range = pci_maprange(testval);
|
|
if (ln2range == 64) {
|
|
/* Read the other half of a 64bit map register */
|
|
base |= (u_int64_t) PCIB_READ_CONFIG(pcib, b, s, f, reg + 4, 4) << 32;
|
|
}
|
|
|
|
if (bootverbose) {
|
|
printf("\tmap[%02x]: type %x, range %2d, base %08x, size %2d",
|
|
reg, pci_maptype(map), ln2range,
|
|
(unsigned int) base, ln2size);
|
|
if (type == SYS_RES_IOPORT && !pci_porten(pcib, b, s, f))
|
|
printf(", port disabled\n");
|
|
else if (type == SYS_RES_MEMORY && !pci_memen(pcib, b, s, f))
|
|
printf(", memory disabled\n");
|
|
else
|
|
printf(", enabled\n");
|
|
}
|
|
|
|
/*
|
|
* This code theoretically does the right thing, but has
|
|
* undesirable side effects in some cases where
|
|
* peripherals respond oddly to having these bits
|
|
* enabled. Leave them alone by default.
|
|
*/
|
|
#ifdef PCI_ENABLE_IO_MODES
|
|
/* Turn on resources that have been left off by a lazy BIOS */
|
|
if (type == SYS_RES_IOPORT && !pci_porten(pcib, b, s, f)) {
|
|
cmd = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2);
|
|
cmd |= PCIM_CMD_PORTEN;
|
|
PCIB_WRITE_CONFIG(pcib, b, s, f, PCIR_COMMAND, cmd, 2);
|
|
}
|
|
if (type == SYS_RES_MEMORY && !pci_memen(pcib, b, s, f)) {
|
|
cmd = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2);
|
|
cmd |= PCIM_CMD_MEMEN;
|
|
PCIB_WRITE_CONFIG(pcib, b, s, f, PCIR_COMMAND, cmd, 2);
|
|
}
|
|
#else
|
|
if (type == SYS_RES_IOPORT && !pci_porten(pcib, b, s, f))
|
|
return 1;
|
|
if (type == SYS_RES_MEMORY && !pci_memen(pcib, b, s, f))
|
|
return 1;
|
|
#endif
|
|
|
|
resource_list_add(rl, type, reg,
|
|
base, base + (1 << ln2size) - 1,
|
|
(1 << ln2size));
|
|
|
|
return (ln2range == 64) ? 2 : 1;
|
|
}
|
|
|
|
static void
|
|
pci_add_resources(device_t pcib, int b, int s, int f, device_t dev)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(dev);
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
struct resource_list *rl = &dinfo->resources;
|
|
struct pci_quirk *q;
|
|
int i;
|
|
|
|
for (i = 0; i < cfg->nummaps;) {
|
|
i += pci_add_map(pcib, b, s, f, PCIR_MAPS + i*4, rl);
|
|
}
|
|
|
|
for (q = &pci_quirks[0]; q->devid; q++) {
|
|
if (q->devid == ((cfg->device << 16) | cfg->vendor)
|
|
&& q->type == PCI_QUIRK_MAP_REG)
|
|
pci_add_map(pcib, b, s, f, q->arg1, rl);
|
|
}
|
|
|
|
if (cfg->intpin > 0 && cfg->intline != 255)
|
|
resource_list_add(rl, SYS_RES_IRQ, 0,
|
|
cfg->intline, cfg->intline, 1);
|
|
}
|
|
|
|
static void
|
|
pci_add_children(device_t dev, int busno)
|
|
{
|
|
device_t pcib = device_get_parent(dev);
|
|
int maxslots;
|
|
int s, f;
|
|
|
|
maxslots = PCIB_MAXSLOTS(pcib);
|
|
|
|
for (s = 0; s <= maxslots; s++) {
|
|
int pcifunchigh = 0;
|
|
for (f = 0; f <= pcifunchigh; f++) {
|
|
struct pci_devinfo *dinfo =
|
|
pci_read_device(pcib, busno, s, f);
|
|
if (dinfo != NULL) {
|
|
if (dinfo->cfg.mfdev)
|
|
pcifunchigh = PCI_FUNCMAX;
|
|
|
|
dinfo->cfg.dev = device_add_child(dev, NULL, -1);
|
|
device_set_ivars(dinfo->cfg.dev, dinfo);
|
|
pci_add_resources(pcib, busno, s, f,
|
|
dinfo->cfg.dev);
|
|
pci_print_verbose(dinfo);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
pci_probe(device_t dev)
|
|
{
|
|
static int once, busno;
|
|
caddr_t vendordata, info;
|
|
|
|
device_set_desc(dev, "PCI bus");
|
|
|
|
if (bootverbose)
|
|
device_printf(dev, "physical bus=%d\n", pcib_get_bus(dev));
|
|
|
|
/*
|
|
* Since there can be multiple independantly numbered PCI
|
|
* busses on some large alpha systems, we can't use the unit
|
|
* number to decide what bus we are probing. We ask the parent
|
|
* pcib what our bus number is.
|
|
*/
|
|
busno = pcib_get_bus(dev);
|
|
if (busno < 0)
|
|
return ENXIO;
|
|
pci_add_children(dev, busno);
|
|
|
|
if (!once) {
|
|
make_dev(&pcicdev, 0, UID_ROOT, GID_WHEEL, 0644, "pci");
|
|
if ((vendordata = preload_search_by_type("pci_vendor_data")) != NULL) {
|
|
info = preload_search_info(vendordata, MODINFO_ADDR);
|
|
pci_vendordata = *(char **)info;
|
|
info = preload_search_info(vendordata, MODINFO_SIZE);
|
|
pci_vendordata_size = *(size_t *)info;
|
|
/* terminate the database */
|
|
pci_vendordata[pci_vendordata_size] = '\n';
|
|
}
|
|
once++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
pci_print_resources(struct resource_list *rl, const char *name, int type,
|
|
const char *format)
|
|
{
|
|
struct resource_list_entry *rle;
|
|
int printed, retval;
|
|
|
|
printed = 0;
|
|
retval = 0;
|
|
/* Yes, this is kinda cheating */
|
|
SLIST_FOREACH(rle, rl, link) {
|
|
if (rle->type == type) {
|
|
if (printed == 0)
|
|
retval += printf(" %s ", name);
|
|
else if (printed > 0)
|
|
retval += printf(",");
|
|
printed++;
|
|
retval += printf(format, rle->start);
|
|
if (rle->count > 1) {
|
|
retval += printf("-");
|
|
retval += printf(format, rle->start +
|
|
rle->count - 1);
|
|
}
|
|
}
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
static int
|
|
pci_print_child(device_t dev, device_t child)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
struct resource_list *rl;
|
|
pcicfgregs *cfg;
|
|
int retval = 0;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
cfg = &dinfo->cfg;
|
|
rl = &dinfo->resources;
|
|
|
|
retval += bus_print_child_header(dev, child);
|
|
|
|
retval += pci_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx");
|
|
retval += pci_print_resources(rl, "mem", SYS_RES_MEMORY, "%#lx");
|
|
retval += pci_print_resources(rl, "irq", SYS_RES_IRQ, "%ld");
|
|
if (device_get_flags(dev))
|
|
retval += printf(" flags %#x", device_get_flags(dev));
|
|
|
|
retval += printf(" at device %d.%d", pci_get_slot(child),
|
|
pci_get_function(child));
|
|
|
|
retval += bus_print_child_footer(dev, child);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
static struct
|
|
{
|
|
int class;
|
|
int subclass;
|
|
char *desc;
|
|
} pci_nomatch_tab[] = {
|
|
{PCIC_OLD, -1, "old"},
|
|
{PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"},
|
|
{PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"},
|
|
{PCIC_STORAGE, -1, "mass storage"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"},
|
|
{PCIC_NETWORK, -1, "network"},
|
|
{PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"},
|
|
{PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"},
|
|
{PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"},
|
|
{PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"},
|
|
{PCIC_DISPLAY, -1, "display"},
|
|
{PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"},
|
|
{PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"},
|
|
{PCIC_MULTIMEDIA, -1, "multimedia"},
|
|
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"},
|
|
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"},
|
|
{PCIC_MEMORY, -1, "memory"},
|
|
{PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"},
|
|
{PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"},
|
|
{PCIC_BRIDGE, -1, "bridge"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_OTHER, "PCI-unknown"},
|
|
{PCIC_SIMPLECOMM, -1, "simple comms"},
|
|
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */
|
|
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"},
|
|
{PCIC_BASEPERIPH, -1, "base peripheral"},
|
|
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"},
|
|
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"},
|
|
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"},
|
|
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"},
|
|
{PCIC_INPUTDEV, -1, "input device"},
|
|
{PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"},
|
|
{PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"},
|
|
{PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"},
|
|
{PCIC_DOCKING, -1, "docking station"},
|
|
{PCIC_PROCESSOR, -1, "processor"},
|
|
{PCIC_SERIALBUS, -1, "serial bus"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"},
|
|
{0, 0, NULL}
|
|
};
|
|
|
|
static void
|
|
pci_probe_nomatch(device_t dev, device_t child)
|
|
{
|
|
int i;
|
|
char *cp, *scp, *device;
|
|
|
|
/*
|
|
* Look for a listing for this device in a loaded device database.
|
|
*/
|
|
if ((device = pci_describe_device(child)) != NULL) {
|
|
device_printf(dev, "<%s>", device);
|
|
free(device, M_DEVBUF);
|
|
} else {
|
|
/*
|
|
* Scan the class/subclass descriptions for a general description.
|
|
*/
|
|
cp = "unknown";
|
|
scp = NULL;
|
|
for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) {
|
|
if (pci_nomatch_tab[i].class == pci_get_class(child)) {
|
|
if (pci_nomatch_tab[i].subclass == -1) {
|
|
cp = pci_nomatch_tab[i].desc;
|
|
} else if (pci_nomatch_tab[i].subclass == pci_get_subclass(child)) {
|
|
scp = pci_nomatch_tab[i].desc;
|
|
}
|
|
}
|
|
}
|
|
device_printf(dev, "<%s%s%s>",
|
|
cp ? : "",
|
|
((cp != NULL) && (scp != NULL)) ? ", " : "",
|
|
scp ? : "");
|
|
}
|
|
printf(" at %d.%d (no driver attached)\n",
|
|
pci_get_slot(child),
|
|
pci_get_function(child));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Parse the PCI device database, if loaded, and return a pointer to a
|
|
* description of the device.
|
|
*
|
|
* The database is flat text formatted as follows:
|
|
*
|
|
* Any line not in a valid format is ignored.
|
|
* Lines are terminated with newline '\n' characters.
|
|
*
|
|
* A VENDOR line consists of the 4 digit (hex) vendor code, a TAB, then
|
|
* the vendor name.
|
|
*
|
|
* A DEVICE line is entered immediately below the corresponding VENDOR ID.
|
|
* - devices cannot be listed without a corresponding VENDOR line.
|
|
* A DEVICE line consists of a TAB, the 4 digit (hex) device code,
|
|
* another TAB, then the device name.
|
|
*/
|
|
|
|
/*
|
|
* Assuming (ptr) points to the beginning of a line in the database,
|
|
* return the vendor or device and description of the next entry.
|
|
* The value of (vendor) or (device) inappropriate for the entry type
|
|
* is set to -1. Returns nonzero at the end of the database.
|
|
*
|
|
* Note that this is slightly unrobust in the face of corrupt data;
|
|
* we attempt to safeguard against this by spamming the end of the
|
|
* database with a newline when we initialise.
|
|
*/
|
|
static int
|
|
pci_describe_parse_line(char **ptr, int *vendor, int *device, char **desc)
|
|
{
|
|
char *cp = *ptr;
|
|
int left;
|
|
|
|
*device = -1;
|
|
*vendor = -1;
|
|
**desc = '\0';
|
|
for (;;) {
|
|
left = pci_vendordata_size - (cp - pci_vendordata);
|
|
if (left <= 0) {
|
|
*ptr = cp;
|
|
return(1);
|
|
}
|
|
|
|
/* vendor entry? */
|
|
if (*cp != '\t' && sscanf(cp, "%x\t%80[^\n]", vendor, *desc) == 2)
|
|
break;
|
|
/* device entry? */
|
|
if (*cp == '\t' && sscanf(cp, "%x\t%80[^\n]", device, *desc) == 2)
|
|
break;
|
|
|
|
/* skip to next line */
|
|
while (*cp != '\n' && left > 0) {
|
|
cp++;
|
|
left--;
|
|
}
|
|
if (*cp == '\n') {
|
|
cp++;
|
|
left--;
|
|
}
|
|
}
|
|
/* skip to next line */
|
|
while (*cp != '\n' && left > 0) {
|
|
cp++;
|
|
left--;
|
|
}
|
|
if (*cp == '\n' && left > 0)
|
|
cp++;
|
|
*ptr = cp;
|
|
return(0);
|
|
}
|
|
|
|
static char *
|
|
pci_describe_device(device_t dev)
|
|
{
|
|
int vendor, device;
|
|
char *desc, *vp, *dp, *line;
|
|
|
|
desc = vp = dp = NULL;
|
|
|
|
/*
|
|
* If we have no vendor data, we can't do anything.
|
|
*/
|
|
if (pci_vendordata == NULL)
|
|
goto out;
|
|
|
|
/*
|
|
* Scan the vendor data looking for this device
|
|
*/
|
|
line = pci_vendordata;
|
|
if ((vp = malloc(80, M_DEVBUF, M_NOWAIT)) == NULL)
|
|
goto out;
|
|
for (;;) {
|
|
if (pci_describe_parse_line(&line, &vendor, &device, &vp))
|
|
goto out;
|
|
if (vendor == pci_get_vendor(dev))
|
|
break;
|
|
}
|
|
if ((dp = malloc(80, M_DEVBUF, M_NOWAIT)) == NULL)
|
|
goto out;
|
|
for (;;) {
|
|
if (pci_describe_parse_line(&line, &vendor, &device, &dp)) {
|
|
*dp = 0;
|
|
break;
|
|
}
|
|
if (vendor != -1) {
|
|
*dp = 0;
|
|
break;
|
|
}
|
|
if (device == pci_get_device(dev))
|
|
break;
|
|
}
|
|
if (dp[0] == '\0')
|
|
snprintf(dp, 80, "0x%x", pci_get_device(dev));
|
|
if ((desc = malloc(strlen(vp) + strlen(dp) + 3, M_DEVBUF, M_NOWAIT)) != NULL)
|
|
sprintf(desc, "%s, %s", vp, dp);
|
|
out:
|
|
if (vp != NULL)
|
|
free(vp, M_DEVBUF);
|
|
if (dp != NULL)
|
|
free(dp, M_DEVBUF);
|
|
return(desc);
|
|
}
|
|
|
|
static int
|
|
pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
pcicfgregs *cfg;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
cfg = &dinfo->cfg;
|
|
|
|
switch (which) {
|
|
case PCI_IVAR_SUBVENDOR:
|
|
*result = cfg->subvendor;
|
|
break;
|
|
case PCI_IVAR_SUBDEVICE:
|
|
*result = cfg->subdevice;
|
|
break;
|
|
case PCI_IVAR_VENDOR:
|
|
*result = cfg->vendor;
|
|
break;
|
|
case PCI_IVAR_DEVICE:
|
|
*result = cfg->device;
|
|
break;
|
|
case PCI_IVAR_DEVID:
|
|
*result = (cfg->device << 16) | cfg->vendor;
|
|
break;
|
|
case PCI_IVAR_CLASS:
|
|
*result = cfg->baseclass;
|
|
break;
|
|
case PCI_IVAR_SUBCLASS:
|
|
*result = cfg->subclass;
|
|
break;
|
|
case PCI_IVAR_PROGIF:
|
|
*result = cfg->progif;
|
|
break;
|
|
case PCI_IVAR_REVID:
|
|
*result = cfg->revid;
|
|
break;
|
|
case PCI_IVAR_INTPIN:
|
|
*result = cfg->intpin;
|
|
break;
|
|
case PCI_IVAR_IRQ:
|
|
*result = cfg->intline;
|
|
break;
|
|
case PCI_IVAR_BUS:
|
|
*result = cfg->bus;
|
|
break;
|
|
case PCI_IVAR_SLOT:
|
|
*result = cfg->slot;
|
|
break;
|
|
case PCI_IVAR_FUNCTION:
|
|
*result = cfg->func;
|
|
break;
|
|
default:
|
|
return ENOENT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
pci_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
pcicfgregs *cfg;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
cfg = &dinfo->cfg;
|
|
|
|
switch (which) {
|
|
case PCI_IVAR_SUBVENDOR:
|
|
case PCI_IVAR_SUBDEVICE:
|
|
case PCI_IVAR_VENDOR:
|
|
case PCI_IVAR_DEVICE:
|
|
case PCI_IVAR_DEVID:
|
|
case PCI_IVAR_CLASS:
|
|
case PCI_IVAR_SUBCLASS:
|
|
case PCI_IVAR_PROGIF:
|
|
case PCI_IVAR_REVID:
|
|
case PCI_IVAR_INTPIN:
|
|
case PCI_IVAR_IRQ:
|
|
case PCI_IVAR_BUS:
|
|
case PCI_IVAR_SLOT:
|
|
case PCI_IVAR_FUNCTION:
|
|
return EINVAL; /* disallow for now */
|
|
|
|
default:
|
|
return ENOENT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct resource *
|
|
pci_alloc_resource(device_t dev, device_t child, int type, int *rid,
|
|
u_long start, u_long end, u_long count, u_int flags)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(child);
|
|
struct resource_list *rl = &dinfo->resources;
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
|
|
/*
|
|
* Perform lazy resource allocation
|
|
*
|
|
* XXX add support here for SYS_RES_IOPORT and SYS_RES_MEMORY
|
|
*/
|
|
if (device_get_parent(child) == dev) {
|
|
/*
|
|
* If device doesn't have an interrupt routed, and is deserving of
|
|
* an interrupt, try to assign it one.
|
|
*/
|
|
if ((type == SYS_RES_IRQ) && (cfg->intline == 255) && (cfg->intpin != 0)) {
|
|
cfg->intline = PCIB_ROUTE_INTERRUPT(device_get_parent(dev), child,
|
|
cfg->intpin);
|
|
if (cfg->intline != 255) {
|
|
pci_write_config(child, PCIR_INTLINE, cfg->intline, 1);
|
|
resource_list_add(rl, SYS_RES_IRQ, 0,
|
|
cfg->intline, cfg->intline, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
return resource_list_alloc(rl, dev, child, type, rid,
|
|
start, end, count, flags);
|
|
}
|
|
|
|
static void
|
|
pci_delete_resource(device_t dev, device_t child, int type, int rid)
|
|
{
|
|
printf("pci_delete_resource: PCI resources can not be deleted\n");
|
|
}
|
|
|
|
static struct resource_list *
|
|
pci_get_resource_list (device_t dev, device_t child)
|
|
{
|
|
struct pci_devinfo * dinfo = device_get_ivars(child);
|
|
struct resource_list * rl = &dinfo->resources;
|
|
|
|
if (!rl)
|
|
return (NULL);
|
|
|
|
return (rl);
|
|
}
|
|
|
|
static u_int32_t
|
|
pci_read_config_method(device_t dev, device_t child, int reg, int width)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(child);
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
|
|
return PCIB_READ_CONFIG(device_get_parent(dev),
|
|
cfg->bus, cfg->slot, cfg->func,
|
|
reg, width);
|
|
}
|
|
|
|
static void
|
|
pci_write_config_method(device_t dev, device_t child, int reg,
|
|
u_int32_t val, int width)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(child);
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
|
|
PCIB_WRITE_CONFIG(device_get_parent(dev),
|
|
cfg->bus, cfg->slot, cfg->func,
|
|
reg, val, width);
|
|
}
|
|
|
|
static int
|
|
pci_modevent(module_t mod, int what, void *arg)
|
|
{
|
|
switch (what) {
|
|
case MOD_LOAD:
|
|
STAILQ_INIT(&pci_devq);
|
|
pci_generation = 0;
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|