250e158ddf
This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h" in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces header pollution substantially. EVENTHANDLER_DECLARE and EVENTHANDLER_LIST_DECLAREs were moved out of .c files into appropriate headers (e.g., sys/proc.h, powernv/opal.h). As a side effect of reduced header pollution, many .c files and headers no longer contain needed definitions. The remainder of the patch addresses adding appropriate includes to fix those files. LOCK_DEBUG and LOCK_FILE_LINE_ARG are moved to sys/_lock.h, as required by sys/mutex.h since r326106 (but silently protected by header pollution prior to this change). No functional change (intended). Of course, any out of tree modules that relied on header pollution for sys/eventhandler.h, sys/lock.h, or sys/mutex.h inclusion need to be fixed. __FreeBSD_version has been bumped.
218 lines
5.5 KiB
C
218 lines
5.5 KiB
C
/*-
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* Copyright (c) 2018 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
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* ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <machine/bus.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <arm64/coresight/coresight.h>
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MALLOC_DEFINE(M_CORESIGHT, "coresight", "ARM Coresight");
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static struct mtx cs_mtx;
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struct coresight_device_list cs_devs;
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static int
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coresight_get_ports(phandle_t dev_node,
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struct coresight_platform_data *pdata)
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{
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phandle_t node, child;
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pcell_t port_reg;
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phandle_t xref;
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char *name;
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int ret;
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phandle_t endpoint_child;
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struct endpoint *endp;
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child = ofw_bus_find_child(dev_node, "ports");
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if (child)
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node = child;
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else
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node = dev_node;
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for (child = OF_child(node); child != 0; child = OF_peer(child)) {
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ret = OF_getprop_alloc(child, "name", (void **)&name);
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if (ret == -1)
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continue;
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if (strcasecmp(name, "port") ||
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strncasecmp(name, "port@", 6)) {
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port_reg = -1;
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OF_getencprop(child, "reg", (void *)&port_reg, sizeof(port_reg));
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endpoint_child = ofw_bus_find_child(child, "endpoint");
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if (endpoint_child) {
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if (OF_getencprop(endpoint_child, "remote-endpoint", &xref,
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sizeof(xref)) == -1) {
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printf("failed\n");
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continue;
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}
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endp = malloc(sizeof(struct endpoint), M_CORESIGHT,
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M_WAITOK | M_ZERO);
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endp->my_node = endpoint_child;
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endp->their_node = OF_node_from_xref(xref);
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endp->dev_node = dev_node;
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endp->reg = port_reg;
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if (OF_getproplen(endpoint_child, "slave-mode") >= 0) {
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pdata->in_ports++;
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endp->slave = 1;
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} else {
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pdata->out_ports++;
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}
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mtx_lock(&pdata->mtx_lock);
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TAILQ_INSERT_TAIL(&pdata->endpoints, endp, link);
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mtx_unlock(&pdata->mtx_lock);
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}
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}
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}
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return (0);
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}
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int
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coresight_register(struct coresight_desc *desc)
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{
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struct coresight_device *cs_dev;
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cs_dev = malloc(sizeof(struct coresight_device),
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M_CORESIGHT, M_WAITOK | M_ZERO);
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cs_dev->dev = desc->dev;
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cs_dev->node = ofw_bus_get_node(desc->dev);
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cs_dev->pdata = desc->pdata;
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cs_dev->dev_type = desc->dev_type;
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mtx_lock(&cs_mtx);
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TAILQ_INSERT_TAIL(&cs_devs, cs_dev, link);
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mtx_unlock(&cs_mtx);
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return (0);
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}
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struct endpoint *
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coresight_get_output_endpoint(struct coresight_platform_data *pdata)
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{
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struct endpoint *endp;
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if (pdata->out_ports != 1)
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return (NULL);
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TAILQ_FOREACH(endp, &pdata->endpoints, link) {
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if (endp->slave == 0)
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return (endp);
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}
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return (NULL);
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}
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struct coresight_device *
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coresight_get_output_device(struct endpoint *endp, struct endpoint **out_endp)
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{
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struct coresight_device *cs_dev;
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struct endpoint *endp2;
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TAILQ_FOREACH(cs_dev, &cs_devs, link) {
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TAILQ_FOREACH(endp2, &cs_dev->pdata->endpoints, link) {
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if (endp->their_node == endp2->my_node) {
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*out_endp = endp2;
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return (cs_dev);
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}
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}
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}
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return (NULL);
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}
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static int
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coresight_get_cpu(phandle_t node,
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struct coresight_platform_data *pdata)
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{
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phandle_t cpu_node;
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pcell_t xref;
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pcell_t cpu_reg;
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if (OF_getencprop(node, "cpu", &xref, sizeof(xref)) != -1) {
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cpu_node = OF_node_from_xref(xref);
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if (OF_getencprop(cpu_node, "reg", (void *)&cpu_reg,
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sizeof(cpu_reg)) > 0) {
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pdata->cpu = cpu_reg;
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return (0);
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}
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}
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return (-1);
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}
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struct coresight_platform_data *
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coresight_get_platform_data(device_t dev)
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{
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struct coresight_platform_data *pdata;
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phandle_t node;
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node = ofw_bus_get_node(dev);
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pdata = malloc(sizeof(struct coresight_platform_data),
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M_CORESIGHT, M_WAITOK | M_ZERO);
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mtx_init(&pdata->mtx_lock, "Coresight Platform Data", NULL, MTX_DEF);
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TAILQ_INIT(&pdata->endpoints);
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coresight_get_cpu(node, pdata);
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coresight_get_ports(node, pdata);
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if (bootverbose)
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printf("Total ports: in %d out %d\n",
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pdata->in_ports, pdata->out_ports);
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return (pdata);
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}
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static void
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coresight_init(void)
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{
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mtx_init(&cs_mtx, "ARM Coresight", NULL, MTX_DEF);
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TAILQ_INIT(&cs_devs);
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}
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SYSINIT(coresight, SI_SUB_DRIVERS, SI_ORDER_FIRST, coresight_init, NULL);
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