1 // SPDX-License-Identifier: GPL-2.0-only
7  * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
37  * struct minidump_region - Minidump region
97 	list_for_each_entry_safe(entry, tmp, &rproc->dump_segments, node) {  in qcom_minidump_cleanup()
98 		list_del(&entry->node);  in qcom_minidump_cleanup()
99 		kfree(entry->priv);  in qcom_minidump_cleanup()
113 	if (WARN_ON(!list_empty(&rproc->dump_segments))) {  in qcom_add_minidump_segments()
114 		dev_err(&rproc->dev, "dump segment list already populated\n");  in qcom_add_minidump_segments()
115 		return -EUCLEAN;  in qcom_add_minidump_segments()
118 	seg_cnt = le32_to_cpu(subsystem->region_count);  in qcom_add_minidump_segments()
119 	ptr = ioremap((unsigned long)le64_to_cpu(subsystem->regions_baseptr),  in qcom_add_minidump_segments()
122 		return -EFAULT;  in qcom_add_minidump_segments()
130 				return -ENOMEM;  in qcom_add_minidump_segments()
152 	if (IS_ERR(toc) || !toc->status) {  in qcom_minidump()
153 		dev_err(&rproc->dev, "Minidump TOC not found in SMEM\n");  in qcom_minidump()
158 	subsystem = &toc->subsystems[minidump_id];  in qcom_minidump()
164 	if (subsystem->regions_baseptr == 0 ||  in qcom_minidump()
165 	    le32_to_cpu(subsystem->status) != 1 ||  in qcom_minidump()
166 	    le32_to_cpu(subsystem->enabled) != MD_SS_ENABLED ||  in qcom_minidump()
167 	    le32_to_cpu(subsystem->encryption_status) != MD_SS_ENCR_DONE) {  in qcom_minidump()
168 		dev_err(&rproc->dev, "Minidump not ready, skipping\n");  in qcom_minidump()
174 		dev_err(&rproc->dev, "Failed with error: %d while adding minidump entries\n", ret);  in qcom_minidump()
187 	glink->edge = qcom_glink_smem_register(glink->dev, glink->node);  in glink_subdev_start()
189 	return PTR_ERR_OR_ZERO(glink->edge);  in glink_subdev_start()
196 	qcom_glink_smem_unregister(glink->edge);  in glink_subdev_stop()
197 	glink->edge = NULL;  in glink_subdev_stop()
204 	qcom_glink_ssr_notify(glink->ssr_name);  in glink_subdev_unprepare()
208  * qcom_add_glink_subdev() - try to add a GLINK subdevice to rproc
216 	struct device *dev = &rproc->dev;  in qcom_add_glink_subdev()
218 	glink->node = of_get_child_by_name(dev->parent->of_node, "glink-edge");  in qcom_add_glink_subdev()
219 	if (!glink->node)  in qcom_add_glink_subdev()
222 	glink->ssr_name = kstrdup_const(ssr_name, GFP_KERNEL);  in qcom_add_glink_subdev()
223 	if (!glink->ssr_name)  in qcom_add_glink_subdev()
226 	glink->dev = dev;  in qcom_add_glink_subdev()
227 	glink->subdev.start = glink_subdev_start;  in qcom_add_glink_subdev()
228 	glink->subdev.stop = glink_subdev_stop;  in qcom_add_glink_subdev()
229 	glink->subdev.unprepare = glink_subdev_unprepare;  in qcom_add_glink_subdev()
231 	rproc_add_subdev(rproc, &glink->subdev);  in qcom_add_glink_subdev()
236  * qcom_remove_glink_subdev() - remove a GLINK subdevice from rproc
242 	if (!glink->node)  in qcom_remove_glink_subdev()
245 	rproc_remove_subdev(rproc, &glink->subdev);  in qcom_remove_glink_subdev()
246 	kfree_const(glink->ssr_name);  in qcom_remove_glink_subdev()
247 	of_node_put(glink->node);  in qcom_remove_glink_subdev()
252  * qcom_register_dump_segments() - register segments for coredump
269 	ehdr = (struct elf32_hdr *)fw->data;  in qcom_register_dump_segments()
272 	for (i = 0; i < ehdr->e_phnum; i++) {  in qcom_register_dump_segments()
275 		if (phdr->p_type != PT_LOAD)  in qcom_register_dump_segments()
278 		if ((phdr->p_flags & QCOM_MDT_TYPE_MASK) == QCOM_MDT_TYPE_HASH)  in qcom_register_dump_segments()
281 		if (!phdr->p_memsz)  in qcom_register_dump_segments()
284 		ret = rproc_coredump_add_segment(rproc, phdr->p_paddr,  in qcom_register_dump_segments()
285 						 phdr->p_memsz);  in qcom_register_dump_segments()
296 	struct qcom_rproc_subdev *smd = to_smd_subdev(subdev);  in smd_subdev_start()  local
298 	smd->edge = qcom_smd_register_edge(smd->dev, smd->node);  in smd_subdev_start()
300 	return PTR_ERR_OR_ZERO(smd->edge);  in smd_subdev_start()
305 	struct qcom_rproc_subdev *smd = to_smd_subdev(subdev);  in smd_subdev_stop()  local
307 	qcom_smd_unregister_edge(smd->edge);  in smd_subdev_stop()
308 	smd->edge = NULL;  in smd_subdev_stop()
312  * qcom_add_smd_subdev() - try to add a SMD subdevice to rproc
314  * @smd:	reference to a Qualcomm subdev context
316 void qcom_add_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd)  in qcom_add_smd_subdev()  argument
318 	struct device *dev = &rproc->dev;  in qcom_add_smd_subdev()
320 	smd->node = of_get_child_by_name(dev->parent->of_node, "smd-edge");  in qcom_add_smd_subdev()
321 	if (!smd->node)  in qcom_add_smd_subdev()
324 	smd->dev = dev;  in qcom_add_smd_subdev()
325 	smd->subdev.start = smd_subdev_start;  in qcom_add_smd_subdev()
326 	smd->subdev.stop = smd_subdev_stop;  in qcom_add_smd_subdev()
328 	rproc_add_subdev(rproc, &smd->subdev);  in qcom_add_smd_subdev()
333  * qcom_remove_smd_subdev() - remove the smd subdevice from rproc
335  * @smd:	the SMD subdevice to remove
337 void qcom_remove_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd)  in qcom_remove_smd_subdev()  argument
339 	if (!smd->node)  in qcom_remove_smd_subdev()
342 	rproc_remove_subdev(rproc, &smd->subdev);  in qcom_remove_smd_subdev()
343 	of_node_put(smd->node);  in qcom_remove_smd_subdev()
354 		if (!strcmp(info->name, name))  in qcom_ssr_get_subsys()
359 		info = ERR_PTR(-ENOMEM);  in qcom_ssr_get_subsys()
362 	info->name = kstrdup_const(name, GFP_KERNEL);  in qcom_ssr_get_subsys()
363 	srcu_init_notifier_head(&info->notifier_list);  in qcom_ssr_get_subsys()
366 	list_add_tail(&info->list, &qcom_ssr_subsystem_list);  in qcom_ssr_get_subsys()
374  * qcom_register_ssr_notifier() - register SSR notification handler
393 	srcu_notifier_chain_register(&info->notifier_list, nb);  in qcom_register_ssr_notifier()
395 	return &info->notifier_list;  in qcom_register_ssr_notifier()
400  * qcom_unregister_ssr_notifier() - unregister SSR notification handler
419 		.name = ssr->info->name,  in ssr_notify_prepare()
423 	srcu_notifier_call_chain(&ssr->info->notifier_list,  in ssr_notify_prepare()
432 		.name = ssr->info->name,  in ssr_notify_start()
436 	srcu_notifier_call_chain(&ssr->info->notifier_list,  in ssr_notify_start()
445 		.name = ssr->info->name,  in ssr_notify_stop()
449 	srcu_notifier_call_chain(&ssr->info->notifier_list,  in ssr_notify_stop()
457 		.name = ssr->info->name,  in ssr_notify_unprepare()
461 	srcu_notifier_call_chain(&ssr->info->notifier_list,  in ssr_notify_unprepare()
466  * qcom_add_ssr_subdev() - register subdevice as restart notification source
482 		dev_err(&rproc->dev, "Failed to add ssr subdevice\n");  in qcom_add_ssr_subdev()
486 	ssr->info = info;  in qcom_add_ssr_subdev()
487 	ssr->subdev.prepare = ssr_notify_prepare;  in qcom_add_ssr_subdev()
488 	ssr->subdev.start = ssr_notify_start;  in qcom_add_ssr_subdev()
489 	ssr->subdev.stop = ssr_notify_stop;  in qcom_add_ssr_subdev()
490 	ssr->subdev.unprepare = ssr_notify_unprepare;  in qcom_add_ssr_subdev()
492 	rproc_add_subdev(rproc, &ssr->subdev);  in qcom_add_ssr_subdev()
497  * qcom_remove_ssr_subdev() - remove subdevice as restart notification source
503 	rproc_remove_subdev(rproc, &ssr->subdev);  in qcom_remove_ssr_subdev()
504 	ssr->info = NULL;  in qcom_remove_ssr_subdev()