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 "bhnd_nvram_if.h" 50 51#include "chipcvar.h" 52#include "chipc_private.h" 53 54#define CHIPC_VALID_SPROM_SRC(_src) \ 55 ((_src) == BHND_NVRAM_SRC_SPROM || (_src) == BHND_NVRAM_SRC_OTP) 56 57static int 58chipc_sprom_probe(device_t dev) 59{ 60 struct chipc_caps *caps; 61 device_t chipc; 62 int error; 63 64 chipc = device_get_parent(dev); 65 caps = BHND_CHIPC_GET_CAPS(chipc); 66 67 /* Only match on SPROM/OTP devices */ 68 if (!CHIPC_VALID_SPROM_SRC(caps->nvram_src)) 69 return (ENXIO); 70 71 /* Defer to default driver implementation */ 72 if ((error = bhnd_sprom_probe(dev)) > 0) 73 return (error); 74 75 return (BUS_PROBE_NOWILDCARD); 76} 77 78static int 79chipc_sprom_attach(device_t dev) 80{ 81 struct chipc_caps *caps; 82 device_t chipc; 83 int error; 84 85 chipc = device_get_parent(dev); 86 caps = BHND_CHIPC_GET_CAPS(chipc); 87 88 /* Request that ChipCommon enable access to SPROM hardware before 89 * delegating attachment (and SPROM parsing) to the common driver */ 90 if ((error = BHND_CHIPC_ENABLE_SPROM(chipc))) 91 return (error); 92 93 error = bhnd_sprom_attach(dev, caps->sprom_offset); 94 BHND_CHIPC_DISABLE_SPROM(chipc); 95 return (error); 96} 97 98static device_method_t chipc_sprom_methods[] = { 99 /* Device interface */ 100 DEVMETHOD(device_probe, chipc_sprom_probe), 101 DEVMETHOD(device_attach, chipc_sprom_attach), 102 DEVMETHOD_END 103}; 104 105DEFINE_CLASS_1(bhnd_nvram, chipc_sprom_driver, chipc_sprom_methods, sizeof(struct bhnd_sprom_softc), bhnd_sprom_driver); 106DRIVER_MODULE(bhnd_chipc_sprom, bhnd_chipc, chipc_sprom_driver, bhnd_nvram_devclass, NULL, NULL); 107 108MODULE_DEPEND(bhnd_chipc_sprom, bhnd, 1, 1, 1); 109MODULE_DEPEND(bhnd_chipc_sprom, bhnd_chipc, 1, 1, 1); 110MODULE_DEPEND(bhnd_chipc_sprom, bhnd_sprom, 1, 1, 1); 111MODULE_VERSION(bhnd_chipc_sprom, 1); 112