2 * Copyright (c) 2018-2020 Ruslan Bukin <br@bsdpad.com>
5 * This software was developed by SRI International and the University of
6 * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
7 * ("CTSRD"), as part of the DARPA CRASH research programme.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/systm.h>
38 #include <sys/kernel.h>
40 #include <sys/module.h>
41 #include <sys/mutex.h>
42 #include <machine/bus.h>
44 #include <arm64/coresight/coresight.h>
46 static struct mtx cs_mtx;
47 struct coresight_device_list cs_devs;
50 coresight_register(struct coresight_desc *desc)
52 struct coresight_device *cs_dev;
54 cs_dev = malloc(sizeof(struct coresight_device),
55 M_CORESIGHT, M_WAITOK | M_ZERO);
56 cs_dev->dev = desc->dev;
57 cs_dev->pdata = desc->pdata;
58 cs_dev->dev_type = desc->dev_type;
61 TAILQ_INSERT_TAIL(&cs_devs, cs_dev, link);
68 coresight_get_output_endpoint(struct coresight_platform_data *pdata)
70 struct endpoint *endp;
72 if (pdata->out_ports != 1)
75 TAILQ_FOREACH(endp, &pdata->endpoints, link) {
83 struct coresight_device *
84 coresight_get_output_device(struct endpoint *endp, struct endpoint **out_endp)
86 struct coresight_platform_data *pdata;
87 struct coresight_device *cs_dev;
88 struct endpoint *endp2;
90 TAILQ_FOREACH(cs_dev, &cs_devs, link) {
91 pdata = cs_dev->pdata;
92 TAILQ_FOREACH(endp2, &cs_dev->pdata->endpoints, link) {
93 switch (pdata->bus_type) {
94 case CORESIGHT_BUS_FDT:
96 if (endp->their_node == endp2->my_node) {
103 case CORESIGHT_BUS_ACPI:
105 if (endp->their_handle == endp2->my_handle) {
122 mtx_init(&cs_mtx, "ARM Coresight", NULL, MTX_DEF);
123 TAILQ_INIT(&cs_devs);
126 SYSINIT(coresight, SI_SUB_DRIVERS, SI_ORDER_FIRST, coresight_init, NULL);