2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
15 * redistribution must be conditioned upon including a substantially
16 * similar Disclaimer requirement for further binary redistribution.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
27 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29 * THE POSSIBILITY OF SUCH DAMAGES.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
36 * ChipCommon SPROM driver.
39 #include <sys/param.h>
40 #include <sys/kernel.h>
42 #include <sys/limits.h>
43 #include <sys/malloc.h>
44 #include <sys/module.h>
45 #include <sys/systm.h>
47 #include <dev/bhnd/bhnd.h>
48 #include <dev/bhnd/nvram/bhnd_nvram.h>
49 #include <dev/bhnd/nvram/bhnd_spromvar.h>
51 #include <dev/bhnd/cores/chipc/chipc.h>
53 #include "bhnd_nvram_if.h"
55 #define CHIPC_VALID_SPROM_SRC(_src) \
56 ((_src) == BHND_NVRAM_SRC_SPROM || (_src) == BHND_NVRAM_SRC_OTP)
59 chipc_sprom_probe(device_t dev)
61 struct chipc_caps *caps;
65 chipc = device_get_parent(dev);
66 caps = BHND_CHIPC_GET_CAPS(chipc);
68 /* Only match on SPROM/OTP devices */
69 if (!CHIPC_VALID_SPROM_SRC(caps->nvram_src))
72 /* Defer to default driver implementation */
73 if ((error = bhnd_sprom_probe(dev)) > 0)
76 return (BUS_PROBE_NOWILDCARD);
80 chipc_sprom_attach(device_t dev)
82 struct chipc_caps *caps;
86 chipc = device_get_parent(dev);
87 caps = BHND_CHIPC_GET_CAPS(chipc);
89 /* Request that ChipCommon enable access to SPROM hardware before
90 * delegating attachment (and SPROM parsing) to the common driver */
91 if ((error = BHND_CHIPC_ENABLE_SPROM(chipc)))
94 error = bhnd_sprom_attach(dev, caps->sprom_offset);
95 BHND_CHIPC_DISABLE_SPROM(chipc);
99 static device_method_t chipc_sprom_methods[] = {
100 /* Device interface */
101 DEVMETHOD(device_probe, chipc_sprom_probe),
102 DEVMETHOD(device_attach, chipc_sprom_attach),
106 DEFINE_CLASS_1(bhnd_nvram, chipc_sprom_driver, chipc_sprom_methods, sizeof(struct bhnd_sprom_softc), bhnd_sprom_driver);
107 DRIVER_MODULE(bhnd_chipc_sprom, bhnd_chipc, chipc_sprom_driver, bhnd_nvram_devclass, NULL, NULL);
109 MODULE_DEPEND(bhnd_chipc_sprom, bhnd, 1, 1, 1);
110 MODULE_DEPEND(bhnd_chipc_sprom, bhnd_chipc, 1, 1, 1);
111 MODULE_DEPEND(bhnd_chipc_sprom, bhnd_sprom, 1, 1, 1);
112 MODULE_VERSION(bhnd_chipc_sprom, 1);