1 /*- 2 * Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 */ 29 30 #include <sys/cdefs.h> 31 /* 32 * BHNDB PCI SPROM driver. 33 * 34 * Provides support for early PCI bridge cores that vend SPROM CSRs 35 * via PCI configuration space. 36 */ 37 38 #include <sys/param.h> 39 #include <sys/kernel.h> 40 #include <sys/bus.h> 41 #include <sys/limits.h> 42 #include <sys/malloc.h> 43 #include <sys/module.h> 44 #include <sys/systm.h> 45 46 #include <dev/pci/pcireg.h> 47 #include <dev/pci/pcivar.h> 48 49 #include <dev/bhnd/bhnd.h> 50 #include <dev/bhnd/cores/pci/bhnd_pci_hostbvar.h> 51 #include <dev/bhnd/nvram/bhnd_spromvar.h> 52 53 #include "bhnd_nvram_if.h" 54 55 #include "bhndb_pcireg.h" 56 #include "bhndb_pcivar.h" 57 58 static int 59 bhndb_pci_sprom_probe(device_t dev) 60 { 61 device_t bridge; 62 int error; 63 64 /* Our parent must be a PCI-BHND bridge */ 65 bridge = device_get_parent(dev); 66 if (device_get_driver(bridge) != &bhndb_pci_driver) 67 return (ENXIO); 68 69 /* Defer to default driver implementation */ 70 if ((error = bhnd_sprom_probe(dev)) > 0) 71 return (error); 72 73 return (BUS_PROBE_NOWILDCARD); 74 } 75 76 static device_method_t bhndb_pci_sprom_methods[] = { 77 /* Device interface */ 78 DEVMETHOD(device_probe, bhndb_pci_sprom_probe), 79 DEVMETHOD_END 80 }; 81 82 DEFINE_CLASS_1(bhnd_nvram, bhndb_pci_sprom_driver, bhndb_pci_sprom_methods, sizeof(struct bhnd_sprom_softc), bhnd_sprom_driver); 83 84 DRIVER_MODULE(bhndb_pci_sprom, bhndb, bhndb_pci_sprom_driver, NULL, NULL); 85 MODULE_DEPEND(bhndb_pci_sprom, bhnd, 1, 1, 1); 86 MODULE_DEPEND(bhndb_pci_sprom, bhnd_sprom, 1, 1, 1); 87 MODULE_VERSION(bhndb_pci_sprom, 1); 88