00f73819c2
PCI infrastructure instantiates a non-existent resource. This has BARs suddenly show up with pciconf(8) under VMware as well. Now that we read the BAR ourselves, ask for the correct resource type.
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/*-
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* Copyright (c) 2014 Marcel Moolenaar
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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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*
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.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/sbuf.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/proto/proto.h>
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static int proto_pci_probe(device_t dev);
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static int proto_pci_attach(device_t dev);
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static device_method_t proto_pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, proto_pci_probe),
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DEVMETHOD(device_attach, proto_pci_attach),
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DEVMETHOD(device_detach, proto_detach),
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DEVMETHOD_END
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};
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static driver_t proto_pci_driver = {
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proto_driver_name,
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proto_pci_methods,
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sizeof(struct proto_softc),
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};
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static int
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proto_pci_probe(device_t dev)
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{
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struct sbuf *sb;
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/* For now we only attach to function 0 devices. */
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if (pci_get_function(dev) != 0)
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return (ENXIO);
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sb = sbuf_new_auto();
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sbuf_printf(sb, "pci%d:%d:%d:%d", pci_get_domain(dev),
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pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev));
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sbuf_finish(sb);
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device_set_desc_copy(dev, sbuf_data(sb));
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sbuf_delete(sb);
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return (BUS_PROBE_HOOVER);
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}
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static int
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proto_pci_attach(device_t dev)
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{
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struct proto_softc *sc;
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struct resource *res;
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uint32_t val;
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int bar, rid, type;
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sc = device_get_softc(dev);
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proto_add_resource(sc, PROTO_RES_PCICFG, 0, NULL);
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proto_add_resource(sc, PROTO_RES_BUSDMA, 0, NULL);
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for (bar = 0; bar < PCIR_MAX_BAR_0; bar++) {
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rid = PCIR_BAR(bar);
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val = pci_read_config(dev, rid, 4);
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type = (PCI_BAR_IO(val)) ? SYS_RES_IOPORT : SYS_RES_MEMORY;
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res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
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if (res == NULL)
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continue;
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proto_add_resource(sc, type, rid, res);
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if (type == SYS_RES_IOPORT)
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continue;
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/* Skip over adjacent BAR for 64-bit memory BARs. */
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if ((val & PCIM_BAR_MEM_TYPE) == PCIM_BAR_MEM_64)
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bar++;
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}
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rid = 0;
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type = SYS_RES_IRQ;
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res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE | RF_SHAREABLE);
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if (res != NULL)
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proto_add_resource(sc, type, rid, res);
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return (proto_attach(dev));
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}
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DRIVER_MODULE(proto, pci, proto_pci_driver, proto_devclass, NULL, NULL);
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