eb83f2e1ea
This fixes bhnd(4) nvram handling on devices that map SPROM CSRs via PCI configuration space. The probe method previously required that a bhnd(4) device be attached to the parent bridge; now that the bhnd_nvram device is always attached first, this unnecessary sanity check always failed. Approved by: adrian (mentor, implicit)
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/*-
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* Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
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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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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* BHNDB PCI SPROM driver.
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*
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* Provides support for early PCI bridge cores that vend SPROM CSRs
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* via PCI configuration space.
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/limits.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 <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/bhnd/bhnd.h>
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#include <dev/bhnd/cores/pci/bhnd_pci_hostbvar.h>
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#include <dev/bhnd/nvram/bhnd_spromvar.h>
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#include "bhnd_nvram_if.h"
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#include "bhndb_pcireg.h"
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#include "bhndb_pcivar.h"
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static int
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bhndb_pci_sprom_probe(device_t dev)
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{
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device_t bridge;
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int error;
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/* Our parent must be a PCI-BHND bridge */
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bridge = device_get_parent(dev);
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if (device_get_driver(bridge) != &bhndb_pci_driver)
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return (ENXIO);
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/* Defer to default driver implementation */
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if ((error = bhnd_sprom_probe(dev)) > 0)
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return (error);
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return (BUS_PROBE_NOWILDCARD);
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}
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static device_method_t bhndb_pci_sprom_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, bhndb_pci_sprom_probe),
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(bhnd_nvram, bhndb_pci_sprom_driver, bhndb_pci_sprom_methods, sizeof(struct bhnd_sprom_softc), bhnd_sprom_driver);
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DRIVER_MODULE(bhndb_pci_sprom, bhndb, bhndb_pci_sprom_driver, bhnd_nvram_devclass, NULL, NULL);
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MODULE_DEPEND(bhndb_pci_sprom, bhnd, 1, 1, 1);
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MODULE_DEPEND(bhndb_pci_sprom, bhnd_sprom, 1, 1, 1);
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MODULE_VERSION(bhndb_pci_sprom, 1);
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