Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Björn Andersson | 811 | 42.04% | 15 | 50.00% |
Siddharth Gupta | 477 | 24.73% | 1 | 3.33% |
Rishabh Bhatnagar | 422 | 21.88% | 2 | 6.67% |
Sarangdhar Joshi | 144 | 7.47% | 1 | 3.33% |
Yogesh Lal | 43 | 2.23% | 1 | 3.33% |
Mukesh Ojha | 9 | 0.47% | 2 | 6.67% |
Alex Elder | 8 | 0.41% | 1 | 3.33% |
Rohit kumar | 5 | 0.26% | 1 | 3.33% |
Kefeng Wang | 3 | 0.16% | 1 | 3.33% |
Krzysztof Kozlowski | 2 | 0.10% | 1 | 3.33% |
Thomas Gleixner | 2 | 0.10% | 1 | 3.33% |
Himanshu Jha | 1 | 0.05% | 1 | 3.33% |
Vasyl Gomonovych | 1 | 0.05% | 1 | 3.33% |
Wei Yongjun | 1 | 0.05% | 1 | 3.33% |
Total | 1929 | 30 |
// SPDX-License-Identifier: GPL-2.0-only /* * Qualcomm Peripheral Image Loader helpers * * Copyright (C) 2016 Linaro Ltd * Copyright (C) 2015 Sony Mobile Communications Inc * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. */ #include <linux/firmware.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/notifier.h> #include <linux/remoteproc.h> #include <linux/remoteproc/qcom_rproc.h> #include <linux/rpmsg/qcom_glink.h> #include <linux/rpmsg/qcom_smd.h> #include <linux/slab.h> #include <linux/soc/qcom/mdt_loader.h> #include <linux/soc/qcom/smem.h> #include "remoteproc_internal.h" #include "qcom_common.h" #define to_glink_subdev(d) container_of(d, struct qcom_rproc_glink, subdev) #define to_smd_subdev(d) container_of(d, struct qcom_rproc_subdev, subdev) #define to_ssr_subdev(d) container_of(d, struct qcom_rproc_ssr, subdev) #define MAX_NUM_OF_SS 10 #define MAX_REGION_NAME_LENGTH 16 #define SBL_MINIDUMP_SMEM_ID 602 #define MD_REGION_VALID ('V' << 24 | 'A' << 16 | 'L' << 8 | 'I' << 0) #define MD_SS_ENCR_DONE ('D' << 24 | 'O' << 16 | 'N' << 8 | 'E' << 0) #define MD_SS_ENABLED ('E' << 24 | 'N' << 16 | 'B' << 8 | 'L' << 0) /** * struct minidump_region - Minidump region * @name : Name of the region to be dumped * @seq_num: : Use to differentiate regions with same name. * @valid : This entry to be dumped (if set to 1) * @address : Physical address of region to be dumped * @size : Size of the region */ struct minidump_region { char name[MAX_REGION_NAME_LENGTH]; __le32 seq_num; __le32 valid; __le64 address; __le64 size; }; /** * struct minidump_subsystem - Subsystem's SMEM Table of content * @status : Subsystem toc init status * @enabled : if set to 1, this region would be copied during coredump * @encryption_status: Encryption status for this subsystem * @encryption_required : Decides to encrypt the subsystem regions or not * @region_count : Number of regions added in this subsystem toc * @regions_baseptr : regions base pointer of the subsystem */ struct minidump_subsystem { __le32 status; __le32 enabled; __le32 encryption_status; __le32 encryption_required; __le32 region_count; __le64 regions_baseptr; }; /** * struct minidump_global_toc - Global Table of Content * @status : Global Minidump init status * @md_revision : Minidump revision * @enabled : Minidump enable status * @subsystems : Array of subsystems toc */ struct minidump_global_toc { __le32 status; __le32 md_revision; __le32 enabled; struct minidump_subsystem subsystems[MAX_NUM_OF_SS]; }; struct qcom_ssr_subsystem { const char *name; struct srcu_notifier_head notifier_list; struct list_head list; }; static LIST_HEAD(qcom_ssr_subsystem_list); static DEFINE_MUTEX(qcom_ssr_subsys_lock); static void qcom_minidump_cleanup(struct rproc *rproc) { struct rproc_dump_segment *entry, *tmp; list_for_each_entry_safe(entry, tmp, &rproc->dump_segments, node) { list_del(&entry->node); kfree(entry->priv); kfree(entry); } } static int qcom_add_minidump_segments(struct rproc *rproc, struct minidump_subsystem *subsystem, void (*rproc_dumpfn_t)(struct rproc *rproc, struct rproc_dump_segment *segment, void *dest, size_t offset, size_t size)) { struct minidump_region __iomem *ptr; struct minidump_region region; int seg_cnt, i; dma_addr_t da; size_t size; char *name; if (WARN_ON(!list_empty(&rproc->dump_segments))) { dev_err(&rproc->dev, "dump segment list already populated\n"); return -EUCLEAN; } seg_cnt = le32_to_cpu(subsystem->region_count); ptr = ioremap((unsigned long)le64_to_cpu(subsystem->regions_baseptr), seg_cnt * sizeof(struct minidump_region)); if (!ptr) return -EFAULT; for (i = 0; i < seg_cnt; i++) { memcpy_fromio(®ion, ptr + i, sizeof(region)); if (le32_to_cpu(region.valid) == MD_REGION_VALID) { name = kstrndup(region.name, MAX_REGION_NAME_LENGTH - 1, GFP_KERNEL); if (!name) { iounmap(ptr); return -ENOMEM; } da = le64_to_cpu(region.address); size = le64_to_cpu(region.size); rproc_coredump_add_custom_segment(rproc, da, size, rproc_dumpfn_t, name); } } iounmap(ptr); return 0; } void qcom_minidump(struct rproc *rproc, unsigned int minidump_id, void (*rproc_dumpfn_t)(struct rproc *rproc, struct rproc_dump_segment *segment, void *dest, size_t offset, size_t size)) { int ret; struct minidump_subsystem *subsystem; struct minidump_global_toc *toc; /* Get Global minidump ToC*/ toc = qcom_smem_get(QCOM_SMEM_HOST_ANY, SBL_MINIDUMP_SMEM_ID, NULL); /* check if global table pointer exists and init is set */ if (IS_ERR(toc) || !toc->status) { dev_err(&rproc->dev, "Minidump TOC not found in SMEM\n"); return; } /* Get subsystem table of contents using the minidump id */ subsystem = &toc->subsystems[minidump_id]; /** * Collect minidump if SS ToC is valid and segment table * is initialized in memory and encryption status is set. */ if (subsystem->regions_baseptr == 0 || le32_to_cpu(subsystem->status) != 1 || le32_to_cpu(subsystem->enabled) != MD_SS_ENABLED || le32_to_cpu(subsystem->encryption_status) != MD_SS_ENCR_DONE) { dev_err(&rproc->dev, "Minidump not ready, skipping\n"); return; } ret = qcom_add_minidump_segments(rproc, subsystem, rproc_dumpfn_t); if (ret) { dev_err(&rproc->dev, "Failed with error: %d while adding minidump entries\n", ret); goto clean_minidump; } rproc_coredump_using_sections(rproc); clean_minidump: qcom_minidump_cleanup(rproc); } EXPORT_SYMBOL_GPL(qcom_minidump); static int glink_subdev_start(struct rproc_subdev *subdev) { struct qcom_rproc_glink *glink = to_glink_subdev(subdev); glink->edge = qcom_glink_smem_register(glink->dev, glink->node); return PTR_ERR_OR_ZERO(glink->edge); } static void glink_subdev_stop(struct rproc_subdev *subdev, bool crashed) { struct qcom_rproc_glink *glink = to_glink_subdev(subdev); qcom_glink_smem_unregister(glink->edge); glink->edge = NULL; } static void glink_subdev_unprepare(struct rproc_subdev *subdev) { struct qcom_rproc_glink *glink = to_glink_subdev(subdev); qcom_glink_ssr_notify(glink->ssr_name); } /** * qcom_add_glink_subdev() - try to add a GLINK subdevice to rproc * @rproc: rproc handle to parent the subdevice * @glink: reference to a GLINK subdev context * @ssr_name: identifier of the associated remoteproc for ssr notifications */ void qcom_add_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink, const char *ssr_name) { struct device *dev = &rproc->dev; glink->node = of_get_child_by_name(dev->parent->of_node, "glink-edge"); if (!glink->node) return; glink->ssr_name = kstrdup_const(ssr_name, GFP_KERNEL); if (!glink->ssr_name) return; glink->dev = dev; glink->subdev.start = glink_subdev_start; glink->subdev.stop = glink_subdev_stop; glink->subdev.unprepare = glink_subdev_unprepare; rproc_add_subdev(rproc, &glink->subdev); } EXPORT_SYMBOL_GPL(qcom_add_glink_subdev); /** * qcom_remove_glink_subdev() - remove a GLINK subdevice from rproc * @rproc: rproc handle * @glink: reference to a GLINK subdev context */ void qcom_remove_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink) { if (!glink->node) return; rproc_remove_subdev(rproc, &glink->subdev); kfree_const(glink->ssr_name); of_node_put(glink->node); } EXPORT_SYMBOL_GPL(qcom_remove_glink_subdev); /** * qcom_register_dump_segments() - register segments for coredump * @rproc: remoteproc handle * @fw: firmware header * * Register all segments of the ELF in the remoteproc coredump segment list * * Return: 0 on success, negative errno on failure. */ int qcom_register_dump_segments(struct rproc *rproc, const struct firmware *fw) { const struct elf32_phdr *phdrs; const struct elf32_phdr *phdr; const struct elf32_hdr *ehdr; int ret; int i; ehdr = (struct elf32_hdr *)fw->data; phdrs = (struct elf32_phdr *)(ehdr + 1); for (i = 0; i < ehdr->e_phnum; i++) { phdr = &phdrs[i]; if (phdr->p_type != PT_LOAD) continue; if ((phdr->p_flags & QCOM_MDT_TYPE_MASK) == QCOM_MDT_TYPE_HASH) continue; if (!phdr->p_memsz) continue; ret = rproc_coredump_add_segment(rproc, phdr->p_paddr, phdr->p_memsz); if (ret) return ret; } return 0; } EXPORT_SYMBOL_GPL(qcom_register_dump_segments); static int smd_subdev_start(struct rproc_subdev *subdev) { struct qcom_rproc_subdev *smd = to_smd_subdev(subdev); smd->edge = qcom_smd_register_edge(smd->dev, smd->node); return PTR_ERR_OR_ZERO(smd->edge); } static void smd_subdev_stop(struct rproc_subdev *subdev, bool crashed) { struct qcom_rproc_subdev *smd = to_smd_subdev(subdev); qcom_smd_unregister_edge(smd->edge); smd->edge = NULL; } /** * qcom_add_smd_subdev() - try to add a SMD subdevice to rproc * @rproc: rproc handle to parent the subdevice * @smd: reference to a Qualcomm subdev context */ void qcom_add_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd) { struct device *dev = &rproc->dev; smd->node = of_get_child_by_name(dev->parent->of_node, "smd-edge"); if (!smd->node) return; smd->dev = dev; smd->subdev.start = smd_subdev_start; smd->subdev.stop = smd_subdev_stop; rproc_add_subdev(rproc, &smd->subdev); } EXPORT_SYMBOL_GPL(qcom_add_smd_subdev); /** * qcom_remove_smd_subdev() - remove the smd subdevice from rproc * @rproc: rproc handle * @smd: the SMD subdevice to remove */ void qcom_remove_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd) { if (!smd->node) return; rproc_remove_subdev(rproc, &smd->subdev); of_node_put(smd->node); } EXPORT_SYMBOL_GPL(qcom_remove_smd_subdev); static struct qcom_ssr_subsystem *qcom_ssr_get_subsys(const char *name) { struct qcom_ssr_subsystem *info; mutex_lock(&qcom_ssr_subsys_lock); /* Match in the global qcom_ssr_subsystem_list with name */ list_for_each_entry(info, &qcom_ssr_subsystem_list, list) if (!strcmp(info->name, name)) goto out; info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info) { info = ERR_PTR(-ENOMEM); goto out; } info->name = kstrdup_const(name, GFP_KERNEL); srcu_init_notifier_head(&info->notifier_list); /* Add to global notification list */ list_add_tail(&info->list, &qcom_ssr_subsystem_list); out: mutex_unlock(&qcom_ssr_subsys_lock); return info; } /** * qcom_register_ssr_notifier() - register SSR notification handler * @name: Subsystem's SSR name * @nb: notifier_block to be invoked upon subsystem's state change * * This registers the @nb notifier block as part the notifier chain for a * remoteproc associated with @name. The notifier block's callback * will be invoked when the remote processor's SSR events occur * (pre/post startup and pre/post shutdown). * * Return: a subsystem cookie on success, ERR_PTR on failure. */ void *qcom_register_ssr_notifier(const char *name, struct notifier_block *nb) { struct qcom_ssr_subsystem *info; info = qcom_ssr_get_subsys(name); if (IS_ERR(info)) return info; srcu_notifier_chain_register(&info->notifier_list, nb); return &info->notifier_list; } EXPORT_SYMBOL_GPL(qcom_register_ssr_notifier); /** * qcom_unregister_ssr_notifier() - unregister SSR notification handler * @notify: subsystem cookie returned from qcom_register_ssr_notifier * @nb: notifier_block to unregister * * This function will unregister the notifier from the particular notifier * chain. * * Return: 0 on success, %ENOENT otherwise. */ int qcom_unregister_ssr_notifier(void *notify, struct notifier_block *nb) { return srcu_notifier_chain_unregister(notify, nb); } EXPORT_SYMBOL_GPL(qcom_unregister_ssr_notifier); static int ssr_notify_prepare(struct rproc_subdev *subdev) { struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev); struct qcom_ssr_notify_data data = { .name = ssr->info->name, .crashed = false, }; srcu_notifier_call_chain(&ssr->info->notifier_list, QCOM_SSR_BEFORE_POWERUP, &data); return 0; } static int ssr_notify_start(struct rproc_subdev *subdev) { struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev); struct qcom_ssr_notify_data data = { .name = ssr->info->name, .crashed = false, }; srcu_notifier_call_chain(&ssr->info->notifier_list, QCOM_SSR_AFTER_POWERUP, &data); return 0; } static void ssr_notify_stop(struct rproc_subdev *subdev, bool crashed) { struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev); struct qcom_ssr_notify_data data = { .name = ssr->info->name, .crashed = crashed, }; srcu_notifier_call_chain(&ssr->info->notifier_list, QCOM_SSR_BEFORE_SHUTDOWN, &data); } static void ssr_notify_unprepare(struct rproc_subdev *subdev) { struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev); struct qcom_ssr_notify_data data = { .name = ssr->info->name, .crashed = false, }; srcu_notifier_call_chain(&ssr->info->notifier_list, QCOM_SSR_AFTER_SHUTDOWN, &data); } /** * qcom_add_ssr_subdev() - register subdevice as restart notification source * @rproc: rproc handle * @ssr: SSR subdevice handle * @ssr_name: identifier to use for notifications originating from @rproc * * As the @ssr is registered with the @rproc SSR events will be sent to all * registered listeners for the remoteproc when it's SSR events occur * (pre/post startup and pre/post shutdown). */ void qcom_add_ssr_subdev(struct rproc *rproc, struct qcom_rproc_ssr *ssr, const char *ssr_name) { struct qcom_ssr_subsystem *info; info = qcom_ssr_get_subsys(ssr_name); if (IS_ERR(info)) { dev_err(&rproc->dev, "Failed to add ssr subdevice\n"); return; } ssr->info = info; ssr->subdev.prepare = ssr_notify_prepare; ssr->subdev.start = ssr_notify_start; ssr->subdev.stop = ssr_notify_stop; ssr->subdev.unprepare = ssr_notify_unprepare; rproc_add_subdev(rproc, &ssr->subdev); } EXPORT_SYMBOL_GPL(qcom_add_ssr_subdev); /** * qcom_remove_ssr_subdev() - remove subdevice as restart notification source * @rproc: rproc handle * @ssr: SSR subdevice handle */ void qcom_remove_ssr_subdev(struct rproc *rproc, struct qcom_rproc_ssr *ssr) { rproc_remove_subdev(rproc, &ssr->subdev); ssr->info = NULL; } EXPORT_SYMBOL_GPL(qcom_remove_ssr_subdev); MODULE_DESCRIPTION("Qualcomm Remoteproc helper driver"); MODULE_LICENSE("GPL v2");
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