Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Björn Andersson | 1168 | 76.44% | 5 | 35.71% |
Sibi Sankar | 252 | 16.49% | 2 | 14.29% |
Arnd Bergmann | 42 | 2.75% | 1 | 7.14% |
Brian Norris | 37 | 2.42% | 1 | 7.14% |
R Sricharan | 13 | 0.85% | 1 | 7.14% |
Siddharth Gupta | 10 | 0.65% | 1 | 7.14% |
Randy Dunlap | 3 | 0.20% | 1 | 7.14% |
Govind Singh | 2 | 0.13% | 1 | 7.14% |
Stephan Gerhold | 1 | 0.07% | 1 | 7.14% |
Total | 1528 | 14 |
// SPDX-License-Identifier: GPL-2.0 /* * Qualcomm Peripheral Image Loader for Q6V5 * * Copyright (C) 2016-2018 Linaro Ltd. * Copyright (C) 2014 Sony Mobile Communications AB * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. */ #include <linux/kernel.h> #include <linux/platform_device.h> #include <linux/interconnect.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/soc/qcom/qcom_aoss.h> #include <linux/soc/qcom/smem.h> #include <linux/soc/qcom/smem_state.h> #include <linux/remoteproc.h> #include "qcom_common.h" #include "qcom_q6v5.h" #define Q6V5_LOAD_STATE_MSG_LEN 64 #define Q6V5_PANIC_DELAY_MS 200 static int q6v5_load_state_toggle(struct qcom_q6v5 *q6v5, bool enable) { char buf[Q6V5_LOAD_STATE_MSG_LEN]; int ret; if (!q6v5->qmp) return 0; ret = snprintf(buf, sizeof(buf), "{class: image, res: load_state, name: %s, val: %s}", q6v5->load_state, enable ? "on" : "off"); WARN_ON(ret >= Q6V5_LOAD_STATE_MSG_LEN); ret = qmp_send(q6v5->qmp, buf, sizeof(buf)); if (ret) dev_err(q6v5->dev, "failed to toggle load state\n"); return ret; } /** * qcom_q6v5_prepare() - reinitialize the qcom_q6v5 context before start * @q6v5: reference to qcom_q6v5 context to be reinitialized * * Return: 0 on success, negative errno on failure */ int qcom_q6v5_prepare(struct qcom_q6v5 *q6v5) { int ret; ret = icc_set_bw(q6v5->path, 0, UINT_MAX); if (ret < 0) { dev_err(q6v5->dev, "failed to set bandwidth request\n"); return ret; } ret = q6v5_load_state_toggle(q6v5, true); if (ret) { icc_set_bw(q6v5->path, 0, 0); return ret; } reinit_completion(&q6v5->start_done); reinit_completion(&q6v5->stop_done); q6v5->running = true; q6v5->handover_issued = false; enable_irq(q6v5->handover_irq); return 0; } EXPORT_SYMBOL_GPL(qcom_q6v5_prepare); /** * qcom_q6v5_unprepare() - unprepare the qcom_q6v5 context after stop * @q6v5: reference to qcom_q6v5 context to be unprepared * * Return: 0 on success, 1 if handover hasn't yet been called */ int qcom_q6v5_unprepare(struct qcom_q6v5 *q6v5) { disable_irq(q6v5->handover_irq); q6v5_load_state_toggle(q6v5, false); /* Disable interconnect vote, in case handover never happened */ icc_set_bw(q6v5->path, 0, 0); return !q6v5->handover_issued; } EXPORT_SYMBOL_GPL(qcom_q6v5_unprepare); static irqreturn_t q6v5_wdog_interrupt(int irq, void *data) { struct qcom_q6v5 *q6v5 = data; size_t len; char *msg; /* Sometimes the stop triggers a watchdog rather than a stop-ack */ if (!q6v5->running) { complete(&q6v5->stop_done); return IRQ_HANDLED; } msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, q6v5->crash_reason, &len); if (!IS_ERR(msg) && len > 0 && msg[0]) dev_err(q6v5->dev, "watchdog received: %s\n", msg); else dev_err(q6v5->dev, "watchdog without message\n"); q6v5->running = false; rproc_report_crash(q6v5->rproc, RPROC_WATCHDOG); return IRQ_HANDLED; } static irqreturn_t q6v5_fatal_interrupt(int irq, void *data) { struct qcom_q6v5 *q6v5 = data; size_t len; char *msg; if (!q6v5->running) return IRQ_HANDLED; msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, q6v5->crash_reason, &len); if (!IS_ERR(msg) && len > 0 && msg[0]) dev_err(q6v5->dev, "fatal error received: %s\n", msg); else dev_err(q6v5->dev, "fatal error without message\n"); q6v5->running = false; rproc_report_crash(q6v5->rproc, RPROC_FATAL_ERROR); return IRQ_HANDLED; } static irqreturn_t q6v5_ready_interrupt(int irq, void *data) { struct qcom_q6v5 *q6v5 = data; complete(&q6v5->start_done); return IRQ_HANDLED; } /** * qcom_q6v5_wait_for_start() - wait for remote processor start signal * @q6v5: reference to qcom_q6v5 context * @timeout: timeout to wait for the event, in jiffies * * qcom_q6v5_unprepare() should not be called when this function fails. * * Return: 0 on success, -ETIMEDOUT on timeout */ int qcom_q6v5_wait_for_start(struct qcom_q6v5 *q6v5, int timeout) { int ret; ret = wait_for_completion_timeout(&q6v5->start_done, timeout); if (!ret) disable_irq(q6v5->handover_irq); return !ret ? -ETIMEDOUT : 0; } EXPORT_SYMBOL_GPL(qcom_q6v5_wait_for_start); static irqreturn_t q6v5_handover_interrupt(int irq, void *data) { struct qcom_q6v5 *q6v5 = data; if (q6v5->handover) q6v5->handover(q6v5); icc_set_bw(q6v5->path, 0, 0); q6v5->handover_issued = true; return IRQ_HANDLED; } static irqreturn_t q6v5_stop_interrupt(int irq, void *data) { struct qcom_q6v5 *q6v5 = data; complete(&q6v5->stop_done); return IRQ_HANDLED; } /** * qcom_q6v5_request_stop() - request the remote processor to stop * @q6v5: reference to qcom_q6v5 context * @sysmon: reference to the remote's sysmon instance, or NULL * * Return: 0 on success, negative errno on failure */ int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5, struct qcom_sysmon *sysmon) { int ret; q6v5->running = false; /* Don't perform SMP2P dance if sysmon already shut down the remote */ if (qcom_sysmon_shutdown_acked(sysmon)) return 0; qcom_smem_state_update_bits(q6v5->state, BIT(q6v5->stop_bit), BIT(q6v5->stop_bit)); ret = wait_for_completion_timeout(&q6v5->stop_done, 5 * HZ); qcom_smem_state_update_bits(q6v5->state, BIT(q6v5->stop_bit), 0); return ret == 0 ? -ETIMEDOUT : 0; } EXPORT_SYMBOL_GPL(qcom_q6v5_request_stop); /** * qcom_q6v5_panic() - panic handler to invoke a stop on the remote * @q6v5: reference to qcom_q6v5 context * * Set the stop bit and sleep in order to allow the remote processor to flush * its caches etc for post mortem debugging. * * Return: 200ms */ unsigned long qcom_q6v5_panic(struct qcom_q6v5 *q6v5) { qcom_smem_state_update_bits(q6v5->state, BIT(q6v5->stop_bit), BIT(q6v5->stop_bit)); return Q6V5_PANIC_DELAY_MS; } EXPORT_SYMBOL_GPL(qcom_q6v5_panic); /** * qcom_q6v5_init() - initializer of the q6v5 common struct * @q6v5: handle to be initialized * @pdev: platform_device reference for acquiring resources * @rproc: associated remoteproc instance * @crash_reason: SMEM id for crash reason string, or 0 if none * @load_state: load state resource string * @handover: function to be called when proxy resources should be released * * Return: 0 on success, negative errno on failure */ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device *pdev, struct rproc *rproc, int crash_reason, const char *load_state, void (*handover)(struct qcom_q6v5 *q6v5)) { int ret; q6v5->rproc = rproc; q6v5->dev = &pdev->dev; q6v5->crash_reason = crash_reason; q6v5->handover = handover; init_completion(&q6v5->start_done); init_completion(&q6v5->stop_done); q6v5->wdog_irq = platform_get_irq_byname(pdev, "wdog"); if (q6v5->wdog_irq < 0) return q6v5->wdog_irq; ret = devm_request_threaded_irq(&pdev->dev, q6v5->wdog_irq, NULL, q6v5_wdog_interrupt, IRQF_TRIGGER_RISING | IRQF_ONESHOT, "q6v5 wdog", q6v5); if (ret) { dev_err(&pdev->dev, "failed to acquire wdog IRQ\n"); return ret; } q6v5->fatal_irq = platform_get_irq_byname(pdev, "fatal"); if (q6v5->fatal_irq < 0) return q6v5->fatal_irq; ret = devm_request_threaded_irq(&pdev->dev, q6v5->fatal_irq, NULL, q6v5_fatal_interrupt, IRQF_TRIGGER_RISING | IRQF_ONESHOT, "q6v5 fatal", q6v5); if (ret) { dev_err(&pdev->dev, "failed to acquire fatal IRQ\n"); return ret; } q6v5->ready_irq = platform_get_irq_byname(pdev, "ready"); if (q6v5->ready_irq < 0) return q6v5->ready_irq; ret = devm_request_threaded_irq(&pdev->dev, q6v5->ready_irq, NULL, q6v5_ready_interrupt, IRQF_TRIGGER_RISING | IRQF_ONESHOT, "q6v5 ready", q6v5); if (ret) { dev_err(&pdev->dev, "failed to acquire ready IRQ\n"); return ret; } q6v5->handover_irq = platform_get_irq_byname(pdev, "handover"); if (q6v5->handover_irq < 0) return q6v5->handover_irq; ret = devm_request_threaded_irq(&pdev->dev, q6v5->handover_irq, NULL, q6v5_handover_interrupt, IRQF_TRIGGER_RISING | IRQF_ONESHOT, "q6v5 handover", q6v5); if (ret) { dev_err(&pdev->dev, "failed to acquire handover IRQ\n"); return ret; } disable_irq(q6v5->handover_irq); q6v5->stop_irq = platform_get_irq_byname(pdev, "stop-ack"); if (q6v5->stop_irq < 0) return q6v5->stop_irq; ret = devm_request_threaded_irq(&pdev->dev, q6v5->stop_irq, NULL, q6v5_stop_interrupt, IRQF_TRIGGER_RISING | IRQF_ONESHOT, "q6v5 stop", q6v5); if (ret) { dev_err(&pdev->dev, "failed to acquire stop-ack IRQ\n"); return ret; } q6v5->state = devm_qcom_smem_state_get(&pdev->dev, "stop", &q6v5->stop_bit); if (IS_ERR(q6v5->state)) { dev_err(&pdev->dev, "failed to acquire stop state\n"); return PTR_ERR(q6v5->state); } q6v5->load_state = devm_kstrdup_const(&pdev->dev, load_state, GFP_KERNEL); q6v5->qmp = qmp_get(&pdev->dev); if (IS_ERR(q6v5->qmp)) { if (PTR_ERR(q6v5->qmp) != -ENODEV) return dev_err_probe(&pdev->dev, PTR_ERR(q6v5->qmp), "failed to acquire load state\n"); q6v5->qmp = NULL; } else if (!q6v5->load_state) { if (!load_state) dev_err(&pdev->dev, "load state resource string empty\n"); qmp_put(q6v5->qmp); return load_state ? -ENOMEM : -EINVAL; } q6v5->path = devm_of_icc_get(&pdev->dev, NULL); if (IS_ERR(q6v5->path)) return dev_err_probe(&pdev->dev, PTR_ERR(q6v5->path), "failed to acquire interconnect path\n"); return 0; } EXPORT_SYMBOL_GPL(qcom_q6v5_init); /** * qcom_q6v5_deinit() - deinitialize the q6v5 common struct * @q6v5: reference to qcom_q6v5 context to be deinitialized */ void qcom_q6v5_deinit(struct qcom_q6v5 *q6v5) { qmp_put(q6v5->qmp); } EXPORT_SYMBOL_GPL(qcom_q6v5_deinit); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("Qualcomm Peripheral Image Loader for Q6V5");
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