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 __FBSDID("$FreeBSD$"); 32 33 /* 34 * ChipCommon SPROM driver. 35 */ 36 37 #include <sys/param.h> 38 #include <sys/kernel.h> 39 #include <sys/bus.h> 40 #include <sys/limits.h> 41 #include <sys/malloc.h> 42 #include <sys/module.h> 43 #include <sys/systm.h> 44 45 #include <dev/bhnd/bhnd.h> 46 #include <dev/bhnd/nvram/bhnd_nvram.h> 47 #include <dev/bhnd/nvram/bhnd_spromvar.h> 48 49 #include <dev/bhnd/cores/chipc/chipc.h> 50 51 #include "bhnd_nvram_if.h" 52 53 #define CHIPC_VALID_SPROM_SRC(_src) \ 54 ((_src) == BHND_NVRAM_SRC_SPROM || (_src) == BHND_NVRAM_SRC_OTP) 55 56 static int 57 chipc_sprom_probe(device_t dev) 58 { 59 struct chipc_caps *caps; 60 device_t chipc; 61 int error; 62 63 chipc = device_get_parent(dev); 64 caps = BHND_CHIPC_GET_CAPS(chipc); 65 66 /* Only match on SPROM/OTP devices */ 67 if (!CHIPC_VALID_SPROM_SRC(caps->nvram_src)) 68 return (ENXIO); 69 70 /* Defer to default driver implementation */ 71 if ((error = bhnd_sprom_probe(dev)) > 0) 72 return (error); 73 74 return (BUS_PROBE_NOWILDCARD); 75 } 76 77 static int 78 chipc_sprom_attach(device_t dev) 79 { 80 struct chipc_caps *caps; 81 device_t chipc; 82 int error; 83 84 chipc = device_get_parent(dev); 85 caps = BHND_CHIPC_GET_CAPS(chipc); 86 87 /* Request that ChipCommon enable access to SPROM hardware before 88 * delegating attachment (and SPROM parsing) to the common driver */ 89 if ((error = BHND_CHIPC_ENABLE_SPROM(chipc))) 90 return (error); 91 92 error = bhnd_sprom_attach(dev, caps->sprom_offset); 93 BHND_CHIPC_DISABLE_SPROM(chipc); 94 return (error); 95 } 96 97 static device_method_t chipc_sprom_methods[] = { 98 /* Device interface */ 99 DEVMETHOD(device_probe, chipc_sprom_probe), 100 DEVMETHOD(device_attach, chipc_sprom_attach), 101 DEVMETHOD_END 102 }; 103 104 DEFINE_CLASS_1(bhnd_nvram, chipc_sprom_driver, chipc_sprom_methods, sizeof(struct bhnd_sprom_softc), bhnd_sprom_driver); 105 DRIVER_MODULE(bhnd_chipc_sprom, bhnd_chipc, chipc_sprom_driver, bhnd_nvram_devclass, NULL, NULL); 106 107 MODULE_DEPEND(bhnd_chipc_sprom, bhnd, 1, 1, 1); 108 MODULE_DEPEND(bhnd_chipc_sprom, bhnd_chipc, 1, 1, 1); 109 MODULE_DEPEND(bhnd_chipc_sprom, bhnd_sprom, 1, 1, 1); 110 MODULE_VERSION(bhnd_chipc_sprom, 1); 111