Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@xxxxxxxxxxxxxx>
---
drivers/remoteproc/Kconfig | 12 +
drivers/remoteproc/Makefile | 1 +
drivers/remoteproc/qcom_slpi_pil.c | 445
+++++++++++++++++++++++++++++++++++++
3 files changed, 458 insertions(+)
create mode 100644 drivers/remoteproc/qcom_slpi_pil.c
diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index 8f9cf0b..9622fb9 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -95,6 +95,18 @@ config QCOM_Q6V5_PIL
Say y here to support the Qualcomm Peripherial Image Loader
for the
Hexagon V5 based remote processors.
+config QCOM_SLPI_PIL
+ tristate "Qualcomm SLPI Peripheral Image Loader"
+ depends on OF && ARCH_QCOM
+ depends on QCOM_SMEM
+ depends on REMOTEPROC
+ select MFD_SYSCON
+ select QCOM_MDT_LOADER
+ select QCOM_SCM
+ help
+ Say y here to support the TrustZone based Peripherial Image
Loader
+ for the Qualcomm Sensor remote processors.
+
config QCOM_WCNSS_PIL
tristate "Qualcomm WCNSS Peripheral Image Loader"
depends on OF && ARCH_QCOM
diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile
index 0938ea3..16e742a 100644
--- a/drivers/remoteproc/Makefile
+++ b/drivers/remoteproc/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_DA8XX_REMOTEPROC) +=
da8xx_remoteproc.o
obj-$(CONFIG_QCOM_ADSP_PIL) += qcom_adsp_pil.o
obj-$(CONFIG_QCOM_MDT_LOADER) += qcom_mdt_loader.o
obj-$(CONFIG_QCOM_Q6V5_PIL) += qcom_q6v5_pil.o
+obj-$(CONFIG_QCOM_SLPI_PIL) += qcom_slpi_pil.o
obj-$(CONFIG_QCOM_WCNSS_PIL) += qcom_wcnss_pil.o
qcom_wcnss_pil-y += qcom_wcnss.o
qcom_wcnss_pil-y += qcom_wcnss_iris.o
diff --git a/drivers/remoteproc/qcom_slpi_pil.c
b/drivers/remoteproc/qcom_slpi_pil.c
new file mode 100644
index 0000000..106c617
--- /dev/null
+++ b/drivers/remoteproc/qcom_slpi_pil.c
@@ -0,0 +1,445 @@
+/*
+ * Qualcomm slpi Peripheral Image Loader for MSM8974 and MSM8996
+ *
+ * Copyright (C) 2016-2017, Linaro Ltd
+ * Copyright (C) 2014-2017, 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/clk.h>
+#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 SLPI_CRASH_REASON_SMEM 424
+#define SLPI_FIRMWARE_NAME "slpi.mdt"
+#define SLPI_PAS_ID 12
+
+struct qcom_slpi {
+ 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 int stop_bit;
+
+ struct clk *xo;
+ struct clk *aggre2_noc;
+ struct regulator *cx;
+ struct regulator *px;
+
+ 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 slpi_load(struct rproc *rproc, const struct firmware *fw)
+{
+ struct qcom_slpi *slpi = (struct qcom_slpi *)rproc->priv;
+ phys_addr_t fw_addr;
+ size_t fw_size;
+ bool relocate;
+ int ret;
+
+ ret = qcom_scm_pas_init_image(SLPI_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) {
+ slpi->mem_reloc = fw_addr;
+
+ ret = qcom_scm_pas_mem_setup(SLPI_PAS_ID,
+ slpi->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 slpi_fw_ops = {
+ .find_rsc_table = qcom_mdt_find_rsc_table,
+ .load = slpi_load,
+};
+
+static int slpi_start(struct rproc *rproc)
+{
+ struct qcom_slpi *slpi = (struct qcom_slpi *)rproc->priv;
+ int ret;
+
+ ret = clk_prepare_enable(slpi->xo);
+ if (ret)
+ return ret;
+ ret = clk_prepare_enable(slpi->aggre2_noc);
+ if (ret)
+ goto disable_xo;
+ ret = regulator_enable(slpi->cx);
+ if (ret)
+ goto disable_aggr2;
+ ret = regulator_enable(slpi->px);
+ if (ret)
+ goto disable_cx;
+ ret = qcom_scm_pas_auth_and_reset(SLPI_PAS_ID);
+ if (ret) {
+ dev_err(slpi->dev,
+ "failed to authenticate image and release reset\n");
+ goto disable_px;
+ }
+ ret = wait_for_completion_timeout(&slpi->start_done,
+ msecs_to_jiffies(10000));
+ if (!ret) {
+ dev_err(slpi->dev, "start timed out\n");
+ qcom_scm_pas_shutdown(SLPI_PAS_ID);
+ ret = -ETIMEDOUT;
+ goto disable_px;
+ }
+ ret = 0;
+ return ret;
+disable_px:
+ regulator_disable(slpi->px);
+disable_cx:
+ regulator_disable(slpi->cx);
+disable_aggr2:
+ clk_disable_unprepare(slpi->xo);
+disable_xo:
+ clk_disable_unprepare(slpi->aggre2_noc);
+
+ return ret;
+}
+
+static int slpi_stop(struct rproc *rproc)
+{
+ struct qcom_slpi *slpi = (struct qcom_slpi *)rproc->priv;
+ int ret;
+
+ qcom_smem_state_update_bits(slpi->state,
+ BIT(slpi->stop_bit),
+ BIT(slpi->stop_bit));
+
+ ret = wait_for_completion_timeout(&slpi->stop_done,
+ msecs_to_jiffies(5000));
+ if (ret == 0)
+ dev_err(slpi->dev, "timed out on wait\n");
+
+ qcom_smem_state_update_bits(slpi->state,
+ BIT(slpi->stop_bit),
+ 0);
+
+ ret = qcom_scm_pas_shutdown(SLPI_PAS_ID);
+ if (ret)
+ dev_err(slpi->dev, "failed to shutdown: %d\n", ret);
+ return ret;
+}
+
+static void *slpi_da_to_va(struct rproc *rproc, u64 da, int len)
+{
+ struct qcom_slpi *slpi = (struct qcom_slpi *)rproc->priv;
+ int offset;
+
+ offset = da - slpi->mem_reloc;
+ if (offset < 0 || offset + len > slpi->mem_size)
+ return NULL;
+
+ return slpi->mem_region + offset;
+}
+
+static const struct rproc_ops slpi_ops = {
+ .start = slpi_start,
+ .stop = slpi_stop,
+ .da_to_va = slpi_da_to_va,
+};
+
+static irqreturn_t slpi_wdog_interrupt(int irq, void *dev)
+{
+ struct qcom_slpi *slpi = dev;
+
+ rproc_report_crash(slpi->rproc, RPROC_WATCHDOG);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t slpi_fatal_interrupt(int irq, void *dev)
+{
+ struct qcom_slpi *slpi = dev;
+ size_t len;
+ char *msg;
+
+ msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, SLPI_CRASH_REASON_SMEM,
&len);
+ if (!IS_ERR(msg) && len > 0 && msg[0])
+ dev_err(slpi->dev, "fatal error received: %s\n", msg);
+
+ rproc_report_crash(slpi->rproc, RPROC_FATAL_ERROR);
+ if (!IS_ERR(msg))
+ msg[0] = '\0';
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t slpi_ready_interrupt(int irq, void *dev)
+{
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t slpi_handover_interrupt(int irq, void *dev)
+{
+ struct qcom_slpi *slpi = dev;
+
+ complete(&slpi->start_done);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t slpi_stop_ack_interrupt(int irq, void *dev)
+{
+ struct qcom_slpi *slpi = dev;
+
+ complete(&slpi->stop_done);
+ return IRQ_HANDLED;
+}
+
+static int slpi_init_clock(struct qcom_slpi *slpi)
+{
+ int ret;
+
+ slpi->xo = devm_clk_get(slpi->dev, "xo");
+ if (IS_ERR(slpi->xo)) {
+ ret = PTR_ERR(slpi->xo);
+ if (ret != -EPROBE_DEFER)
+ dev_err(slpi->dev, "failed to get xo clock");
+ return ret;
+ }
+
+ slpi->aggre2_noc = devm_clk_get(slpi->dev, "aggre2");
+ if (IS_ERR(slpi->aggre2_noc)) {
+ ret = PTR_ERR(slpi->aggre2_noc);
+ if (ret != -EPROBE_DEFER)
+ dev_err(slpi->dev, "failed to get aggre2 clock");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int slpi_init_regulator(struct qcom_slpi *slpi)
+{
+ int ret;
+
+ slpi->cx = devm_regulator_get(slpi->dev, "vdd_cx");
+ if (IS_ERR(slpi->cx))
+ return PTR_ERR(slpi->cx);
+ ret = regulator_set_voltage(slpi->cx, 5, INT_MAX);
+ if (ret) {
+ dev_err(slpi->dev,
+ "Failed to request voltage(ret:%d)\n", ret);
+ return ret;
+ }
+
+ slpi->px = devm_regulator_get(slpi->dev, "vdd_px");
+ if (IS_ERR(slpi->px))
+ return PTR_ERR(slpi->px);
+
+ return 0;
+}
+
+static int slpi_request_irq(struct qcom_slpi *slpi,
+ 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,
+ "slpi", slpi);
+ if (ret)
+ dev_err(&pdev->dev, "request %s IRQ failed\n", name);
+
+ return ret;
+}
+
+static int slpi_alloc_memory_region(struct qcom_slpi *slpi)
+{
+ struct device_node *node;
+ struct resource r;
+ int ret;
+
+ node = of_parse_phandle(slpi->dev->of_node, "memory-region", 0);
+ if (!node) {
+ dev_err(slpi->dev, "no memory-region specified\n");
+ return -EINVAL;
+ }
+
+ ret = of_address_to_resource(node, 0, &r);
+ if (ret)
+ return ret;
+
+ slpi->mem_phys = slpi->mem_reloc = r.start;
+ slpi->mem_size = resource_size(&r);
+ slpi->mem_region = devm_ioremap_wc(slpi->dev,
+ slpi->mem_phys, slpi->mem_size);
+ if (!slpi->mem_region) {
+ dev_err(slpi->dev, "unable to map memory region: %pa+%zx\n",
+ &r.start, slpi->mem_size);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int slpi_probe(struct platform_device *pdev)
+{
+ struct qcom_slpi *slpi;
+ struct rproc *rproc;
+ int ret;
+
+ if (!qcom_scm_is_available())
+ return -EPROBE_DEFER;
+
+ if (!qcom_scm_pas_supported(SLPI_PAS_ID)) {
+ dev_err(&pdev->dev, "PAS is not available for slpi\n");
+ return -ENXIO;
+ }
+ rproc = rproc_alloc(&pdev->dev, pdev->name, &slpi_ops,
+ SLPI_FIRMWARE_NAME, sizeof(*slpi));
+ if (!rproc) {
+ dev_err(&pdev->dev, "unable to allocate remoteproc\n");
+ return -ENOMEM;
+ }
+
+ rproc->fw_ops = &slpi_fw_ops;
+
+ slpi = (struct qcom_slpi *)rproc->priv;
+ slpi->dev = &pdev->dev;
+ slpi->rproc = rproc;
+ platform_set_drvdata(pdev, slpi);
+
+ init_completion(&slpi->start_done);
+ init_completion(&slpi->stop_done);
+
+ ret = slpi_alloc_memory_region(slpi);
+ if (ret)
+ goto free_rproc;
+
+ ret = slpi_init_clock(slpi);
+ if (ret)
+ goto free_rproc;
+
+ ret = slpi_init_regulator(slpi);
+ if (ret)
+ goto free_rproc;
+
+ ret = slpi_request_irq(slpi, pdev, "wdog", slpi_wdog_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ slpi->wdog_irq = ret;
+
+ ret = slpi_request_irq(slpi, pdev, "fatal", slpi_fatal_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ slpi->fatal_irq = ret;
+
+ ret = slpi_request_irq(slpi, pdev, "ready", slpi_ready_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ slpi->ready_irq = ret;
+
+ ret = slpi_request_irq(slpi, pdev, "handover",
slpi_handover_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ slpi->handover_irq = ret;
+
+ ret = slpi_request_irq(slpi, pdev, "stop-ack",
slpi_stop_ack_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+ slpi->stop_ack_irq = ret;
+
+ slpi->state = qcom_smem_state_get(&pdev->dev, "stop",
+ &slpi->stop_bit);
+ if (IS_ERR(slpi->state)) {
+ ret = PTR_ERR(slpi->state);
+ goto free_rproc;
+ }
+
+ ret = rproc_add(rproc);
+ if (ret)
+ goto free_rproc;
+
+ return 0;
+
+free_rproc:
+ rproc_put(rproc);
+
+ return ret;
+}
+
+static int slpi_remove(struct platform_device *pdev)
+{
+ struct qcom_slpi *slpi = platform_get_drvdata(pdev);
+
+ qcom_smem_state_put(slpi->state);
+ rproc_del(slpi->rproc);
+ rproc_put(slpi->rproc);
+
+ return 0;
+}
+
+static const struct of_device_id slpi_of_match[] = {
+ { .compatible = "qcom,msm8996-slpi-pil" },
+ { },
+};
+
+static struct platform_driver slpi_driver = {
+ .probe = slpi_probe,
+ .remove = slpi_remove,
+ .driver = {
+ .name = "qcom_slpi_pil",
+ .of_match_table = slpi_of_match,
+ },
+};
+
+module_platform_driver(slpi_driver);
+MODULE_DESCRIPTION("Qualcomm MSM8996 slpi Peripherial Image Loader");
+MODULE_LICENSE("GPL v2");
+
