--- /dev/null
+/*
+ * Qualcomm ADSP Peripheral Image Loader for MSM8974 and MSM8996
+ *
+ * Copyright (C) 2016 Linaro Ltd
+ * Copyright (C) 2014 Sony Mobile Communications AB
+ * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/firmware.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/qcom_scm.h>
+#include <linux/regulator/consumer.h>
+#include <linux/remoteproc.h>
+#include <linux/soc/qcom/smem.h>
+#include <linux/soc/qcom/smem_state.h>
+
+#include "qcom_mdt_loader.h"
+#include "remoteproc_internal.h"
+
+#define ADSP_CRASH_REASON_SMEM 423
+#define ADSP_FIRMWARE_NAME "adsp.mdt"
+#define ADSP_PAS_ID 1
+
+struct qcom_adsp {
+ struct device *dev;
+ struct rproc *rproc;
+
+ int wdog_irq;
+ int fatal_irq;
+ int ready_irq;
+ int handover_irq;
+ int stop_ack_irq;
+
+ struct qcom_smem_state *state;
+ unsigned stop_bit;
+
+ struct regulator *cx_supply;
+
+ struct completion start_done;
+ struct completion stop_done;
+
+ phys_addr_t mem_phys;
+ phys_addr_t mem_reloc;
+ void *mem_region;
+ size_t mem_size;
+};
+
+static int adsp_load(struct rproc *rproc, const struct firmware *fw)
+{
+ struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
+ phys_addr_t fw_addr;
+ size_t fw_size;
+ bool relocate;
+ int ret;
+
+ ret = qcom_scm_pas_init_image(ADSP_PAS_ID, fw->data, fw->size);
+ if (ret) {
+ dev_err(&rproc->dev, "invalid firmware metadata\n");
+ return ret;
+ }
+
+ ret = qcom_mdt_parse(fw, &fw_addr, &fw_size, &relocate);
+ if (ret) {
+ dev_err(&rproc->dev, "failed to parse mdt header\n");
+ return ret;
+ }
+
+ if (relocate) {
+ adsp->mem_reloc = fw_addr;
+
+ ret = qcom_scm_pas_mem_setup(ADSP_PAS_ID, adsp->mem_phys, fw_size);
+ if (ret) {
+ dev_err(&rproc->dev, "unable to setup memory for image\n");
+ return ret;
+ }
+ }
+
+ return qcom_mdt_load(rproc, fw, rproc->firmware);
+}
+
+static const struct rproc_fw_ops adsp_fw_ops = {
+ .find_rsc_table = qcom_mdt_find_rsc_table,
+ .load = adsp_load,
+};
+
+static int adsp_start(struct rproc *rproc)
+{
+ struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
+ int ret;
+
+ ret = regulator_enable(adsp->cx_supply);
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_pas_auth_and_reset(ADSP_PAS_ID);
+ if (ret) {
+ dev_err(adsp->dev,
+ "failed to authenticate image and release reset\n");
+ goto disable_regulators;
+ }
+
+ ret = wait_for_completion_timeout(&adsp->start_done,
+ msecs_to_jiffies(5000));
+ if (!ret) {
+ dev_err(adsp->dev, "start timed out\n");
+ qcom_scm_pas_shutdown(ADSP_PAS_ID);
+ ret = -ETIMEDOUT;
+ goto disable_regulators;
+ }
+
+ ret = 0;
+
+disable_regulators:
+ regulator_disable(adsp->cx_supply);
+
+ return ret;
+}
+
+static int adsp_stop(struct rproc *rproc)
+{
+ struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
+ int ret;
+
+ qcom_smem_state_update_bits(adsp->state,
+ BIT(adsp->stop_bit),
+ BIT(adsp->stop_bit));
+
+ ret = wait_for_completion_timeout(&adsp->stop_done,
+ msecs_to_jiffies(5000));
+ if (ret == 0)
+ dev_err(adsp->dev, "timed out on wait\n");
+
+ qcom_smem_state_update_bits(adsp->state,
+ BIT(adsp->stop_bit),
+ 0);
+
+ ret = qcom_scm_pas_shutdown(ADSP_PAS_ID);
+ if (ret)
+ dev_err(adsp->dev, "failed to shutdown: %d\n", ret);
+
+ return ret;
+}
+
+static void *adsp_da_to_va(struct rproc *rproc, u64 da, int len)
+{
+ struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
+ int offset;
+
+ offset = da - adsp->mem_reloc;
+ if (offset < 0 || offset + len > adsp->mem_size)
+ return NULL;
+
+ return adsp->mem_region + offset;
+}
+
+static const struct rproc_ops adsp_ops = {
+ .start = adsp_start,
+ .stop = adsp_stop,
+ .da_to_va = adsp_da_to_va,
+};
+
+static irqreturn_t adsp_wdog_interrupt(int irq, void *dev)
+{
+ struct qcom_adsp *adsp = dev;
+
+ rproc_report_crash(adsp->rproc, RPROC_WATCHDOG);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t adsp_fatal_interrupt(int irq, void *dev)
+{
+ struct qcom_adsp *adsp = dev;
+ size_t len;
+ char *msg;
+
+ msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, ADSP_CRASH_REASON_SMEM, &len);
+ if (!IS_ERR(msg) && len > 0 && msg[0])
+ dev_err(adsp->dev, "fatal error received: %s\n", msg);
+
+ rproc_report_crash(adsp->rproc, RPROC_FATAL_ERROR);
+
+ if (!IS_ERR(msg))
+ msg[0] = '\0';
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t adsp_ready_interrupt(int irq, void *dev)
+{
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t adsp_handover_interrupt(int irq, void *dev)
+{
+ struct qcom_adsp *adsp = dev;
+
+ complete(&adsp->start_done);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t adsp_stop_ack_interrupt(int irq, void *dev)
+{
+ struct qcom_adsp *adsp = dev;
+
+ complete(&adsp->stop_done);
+
+ return IRQ_HANDLED;
+}
+
+static int adsp_init_regulator(struct qcom_adsp *adsp)
+{
+ adsp->cx_supply = devm_regulator_get(adsp->dev, "cx");
+ if (IS_ERR(adsp->cx_supply))
+ return PTR_ERR(adsp->cx_supply);
+
+ regulator_set_load(adsp->cx_supply, 100000);
+
+ return 0;
+}
+
+static int adsp_request_irq(struct qcom_adsp *adsp,
+ struct platform_device *pdev,
+ const char *name,
+ irq_handler_t thread_fn)
+{
+ int ret;
+
+ ret = platform_get_irq_byname(pdev, name);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "no %s IRQ defined\n", name);
+ return ret;
+ }
+
+ ret = devm_request_threaded_irq(&pdev->dev, ret,
+ NULL, thread_fn,
+ IRQF_ONESHOT,
+ "adsp", adsp);
+ if (ret)
+ dev_err(&pdev->dev, "request %s IRQ failed\n", name);
+
+ return ret;
+}
+
+static int adsp_alloc_memory_region(struct qcom_adsp *adsp)
+{
+ struct device_node *node;
+ struct resource r;
+ int ret;
+
+ node = of_parse_phandle(adsp->dev->of_node, "memory-region", 0);
+ if (!node) {
+ dev_err(adsp->dev, "no memory-region specified\n");
+ return -EINVAL;
+ }
+
+ ret = of_address_to_resource(node, 0, &r);
+ if (ret)
+ return ret;
+
+ adsp->mem_phys = adsp->mem_reloc = r.start;
+ adsp->mem_size = resource_size(&r);
+ adsp->mem_region = devm_ioremap_wc(adsp->dev, adsp->mem_phys, adsp->mem_size);
+ if (!adsp->mem_region) {
+ dev_err(adsp->dev, "unable to map memory region: %pa+%zx\n",
+ &r.start, adsp->mem_size);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int adsp_probe(struct platform_device *pdev)
+{
+ struct qcom_adsp *adsp;
+ struct rproc *rproc;
+ int ret;
+
+ if (!qcom_scm_is_available())
+ return -EPROBE_DEFER;
+
+ if (!qcom_scm_pas_supported(ADSP_PAS_ID)) {
+ dev_err(&pdev->dev, "PAS is not available for ADSP\n");
+ return -ENXIO;
+ }
+
+ rproc = rproc_alloc(&pdev->dev, pdev->name, &adsp_ops,
+ ADSP_FIRMWARE_NAME, sizeof(*adsp));
+ if (!rproc) {
+ dev_err(&pdev->dev, "unable to allocate remoteproc\n");
+ return -ENOMEM;
+ }
+
+ rproc->fw_ops = &adsp_fw_ops;
+
+ adsp = (struct qcom_adsp *)rproc->priv;
+ adsp->dev = &pdev->dev;
+ adsp->rproc = rproc;
+ platform_set_drvdata(pdev, adsp);
+
+ init_completion(&adsp->start_done);
+ init_completion(&adsp->stop_done);
+
+ ret = adsp_alloc_memory_region(adsp);
+ if (ret)
+ goto free_rproc;
+
+ ret = adsp_init_regulator(adsp);
+ if (ret)
+ goto free_rproc;
+
+ ret = adsp_request_irq(adsp, pdev, "wdog", adsp_wdog_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ adsp->wdog_irq = ret;
+
+ ret = adsp_request_irq(adsp, pdev, "fatal", adsp_fatal_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ adsp->fatal_irq = ret;
+
+ ret = adsp_request_irq(adsp, pdev, "ready", adsp_ready_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ adsp->ready_irq = ret;
+
+ ret = adsp_request_irq(adsp, pdev, "handover", adsp_handover_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ adsp->handover_irq = ret;
+
+ ret = adsp_request_irq(adsp, pdev, "stop-ack", adsp_stop_ack_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ adsp->stop_ack_irq = ret;
+
+ adsp->state = qcom_smem_state_get(&pdev->dev, "stop",
+ &adsp->stop_bit);
+ if (IS_ERR(adsp->state)) {
+ ret = PTR_ERR(adsp->state);
+ goto free_rproc;
+ }
+
+ ret = rproc_add(rproc);
+ if (ret)
+ goto free_rproc;
+
+ return 0;
+
+free_rproc:
+ rproc_put(rproc);
+
+ return ret;
+}
+
+static int adsp_remove(struct platform_device *pdev)
+{
+ struct qcom_adsp *adsp = platform_get_drvdata(pdev);
+
+ qcom_smem_state_put(adsp->state);
+ rproc_del(adsp->rproc);
+ rproc_put(adsp->rproc);
+
+ return 0;
+}
+
+static const struct of_device_id adsp_of_match[] = {
+ { .compatible = "qcom,msm8974-adsp-pil" },
+ { .compatible = "qcom,msm8996-adsp-pil" },
+ { },
+};
+
+static struct platform_driver adsp_driver = {
+ .probe = adsp_probe,
+ .remove = adsp_remove,
+ .driver = {
+ .name = "qcom_adsp_pil",
+ .of_match_table = adsp_of_match,
+ },
+};
+
+module_platform_driver(adsp_driver);
+MODULE_DESCRIPTION("Qualcomm MSM8974/MSM8996 ADSP Peripherial Image Loader");
+MODULE_LICENSE("GPL v2");
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff