[PATCH v5 0/5] remoteproc: qcom: PIL info support

[PATCH v5 0/5] remoteproc: qcom: PIL info support

[Bjorn Andersson]

Introduce support for filling out the relocation information in IMEM, to aid
post mortem debug tools to locate the various remoteprocs.

Bjorn Andersson (5):
  dt-bindings: remoteproc: Add Qualcomm PIL info binding
  remoteproc: qcom: Introduce helper to store pil info in IMEM
  remoteproc: qcom: Update PIL relocation info on load
  arm64: dts: qcom: qcs404: Add IMEM and PIL info region
  arm64: dts: qcom: sdm845: Add IMEM and PIL info region

 .../bindings/remoteproc/qcom,pil-info.yaml    |  44 +++++++
 arch/arm64/boot/dts/qcom/qcs404.dtsi          |  15 +++
 arch/arm64/boot/dts/qcom/sdm845.dtsi          |  15 +++
 drivers/remoteproc/Kconfig                    |   6 +
 drivers/remoteproc/Makefile                   |   1 +
 drivers/remoteproc/qcom_pil_info.c            | 124 ++++++++++++++++++
 drivers/remoteproc/qcom_pil_info.h            |   7 +
 drivers/remoteproc/qcom_q6v5_adsp.c           |  16 ++-
 drivers/remoteproc/qcom_q6v5_mss.c            |   3 +
 drivers/remoteproc/qcom_q6v5_pas.c            |  15 ++-
 drivers/remoteproc/qcom_q6v5_wcss.c           |  14 +-
 drivers/remoteproc/qcom_wcnss.c               |  14 +-
 12 files changed, 262 insertions(+), 12 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml
 create mode 100644 drivers/remoteproc/qcom_pil_info.c
 create mode 100644 drivers/remoteproc/qcom_pil_info.h

-- 
2.26.2

[PATCH v5 1/5] dt-bindings: remoteproc: Add Qualcomm PIL info binding

[Bjorn Andersson]

Add a devicetree binding for the Qualcomm peripheral image loader
relocation information region found in the IMEM.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

Changes since v4:
- Fixed reg in example to make it compile

 .../bindings/remoteproc/qcom,pil-info.yaml    | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml
new file mode 100644
index 000000000000..87c52316ddbd
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/qcom,pil-info.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm peripheral image loader relocation info binding
+
+maintainers:
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description:
+  The Qualcomm peripheral image loader relocation memory region, in IMEM, is
+  used for communicating remoteproc relocation information to post mortem
+  debugging tools.
+
+properties:
+  compatible:
+    const: qcom,pil-reloc-info
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    imem@146bf000 {
+      compatible = "syscon", "simple-mfd";
+      reg = <0x146bf000 0x1000>;
+
+      #address-cells = <1>;
+      #size-cells = <1>;
+
+      ranges = <0 0x146bf000 0x1000>;
+
+      pil-reloc@94c {
+        compatible = "qcom,pil-reloc-info";
+        reg = <0x94c 0xc8>;
+      };
+    };
+...
-- 
2.26.2

[PATCH v5 2/5] remoteproc: qcom: Introduce helper to store pil info in IMEM

[Bjorn Andersson]

A region in IMEM is used to communicate load addresses of remoteproc to
post mortem debug tools. Implement a helper function that can be used to
store this information in order to enable these tools to process
collected ramdumps.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

Changes since v4:
- Replaced platform_driver by just a single helper function
- Lazy initialization of mapping
- Cleaned up search loop
- Replaced regmap access of IMEM with ioremap and normal accessors

 drivers/remoteproc/Kconfig         |   3 +
 drivers/remoteproc/Makefile        |   1 +
 drivers/remoteproc/qcom_pil_info.c | 124 +++++++++++++++++++++++++++++
 drivers/remoteproc/qcom_pil_info.h |   7 ++
 4 files changed, 135 insertions(+)
 create mode 100644 drivers/remoteproc/qcom_pil_info.c
 create mode 100644 drivers/remoteproc/qcom_pil_info.h

diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index fbaed079b299..8088ca4dd6dc 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -107,6 +107,9 @@ config KEYSTONE_REMOTEPROC
 	  It's safe to say N here if you're not interested in the Keystone
 	  DSPs or just want to use a bare minimum kernel.
 
+config QCOM_PIL_INFO
+	tristate
+
 config QCOM_RPROC_COMMON
 	tristate
 
diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile
index 0effd3825035..cc0f631adb3b 100644
--- a/drivers/remoteproc/Makefile
+++ b/drivers/remoteproc/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_OMAP_REMOTEPROC)		+= omap_remoteproc.o
 obj-$(CONFIG_WKUP_M3_RPROC)		+= wkup_m3_rproc.o
 obj-$(CONFIG_DA8XX_REMOTEPROC)		+= da8xx_remoteproc.o
 obj-$(CONFIG_KEYSTONE_REMOTEPROC)	+= keystone_remoteproc.o
+obj-$(CONFIG_QCOM_PIL_INFO)		+= qcom_pil_info.o
 obj-$(CONFIG_QCOM_RPROC_COMMON)		+= qcom_common.o
 obj-$(CONFIG_QCOM_Q6V5_COMMON)		+= qcom_q6v5.o
 obj-$(CONFIG_QCOM_Q6V5_ADSP)		+= qcom_q6v5_adsp.o
diff --git a/drivers/remoteproc/qcom_pil_info.c b/drivers/remoteproc/qcom_pil_info.c
new file mode 100644
index 000000000000..0785c7cde2d3
--- /dev/null
+++ b/drivers/remoteproc/qcom_pil_info.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2019-2020 Linaro Ltd.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of_address.h>
+
+#define PIL_RELOC_NAME_LEN	8
+
+struct pil_reloc_entry {
+	char name[PIL_RELOC_NAME_LEN];
+	__le64 base;
+	__le32 size;
+} __packed;
+
+struct pil_reloc {
+	struct device *dev;
+	void __iomem *base;
+	size_t num_entries;
+};
+
+static struct pil_reloc _reloc __read_mostly;
+static DEFINE_MUTEX(reloc_mutex);
+
+static int qcom_pil_info_init(void)
+{
+	struct device_node *np;
+	struct resource imem;
+	void __iomem *base;
+	int ret;
+
+	/* Already initialized? */
+	if (_reloc.base)
+		return 0;
+
+	np = of_find_compatible_node(NULL, NULL, "qcom,pil-reloc-info");
+	if (!np)
+		return -ENOENT;
+
+	ret = of_address_to_resource(np, 0, &imem);
+	of_node_put(np);
+	if (ret < 0)
+		return ret;
+
+	base = ioremap(imem.start, resource_size(&imem));
+	if (!base) {
+		pr_err("failed to map PIL relocation info region\n");
+		return -ENOMEM;
+	}
+
+	memset_io(base, 0, resource_size(&imem));
+
+	_reloc.base = base;
+	_reloc.num_entries = resource_size(&imem) / sizeof(struct pil_reloc_entry);
+
+	return 0;
+}
+
+/**
+ * qcom_pil_info_store() - store PIL information of image in IMEM
+ * @image:	name of the image
+ * @base:	base address of the loaded image
+ * @size:	size of the loaded image
+ *
+ * Return: 0 on success, negative errno on failure
+ */
+int qcom_pil_info_store(const char *image, phys_addr_t base, size_t size)
+{
+	char buf[PIL_RELOC_NAME_LEN];
+	void __iomem *entry;
+	int ret;
+	int i;
+
+	mutex_lock(&reloc_mutex);
+	ret = qcom_pil_info_init();
+	if (ret < 0) {
+		mutex_unlock(&reloc_mutex);
+		return ret;
+	}
+
+	for (i = 0; i < _reloc.num_entries; i++) {
+		entry = _reloc.base + i * sizeof(struct pil_reloc_entry);
+
+		memcpy_fromio(buf, entry, PIL_RELOC_NAME_LEN);
+
+		/*
+		 * An empty record means we didn't find it, given that the
+		 * records are packed.
+		 */
+		if (!buf[0])
+			goto found_unused;
+
+		if (!strncmp(buf, image, PIL_RELOC_NAME_LEN))
+			goto found_existing;
+	}
+
+	pr_warn("insufficient PIL info slots\n");
+	mutex_unlock(&reloc_mutex);
+	return -ENOMEM;
+
+found_unused:
+	memcpy_toio(entry, image, PIL_RELOC_NAME_LEN);
+found_existing:
+	writel(base, entry + offsetof(struct pil_reloc_entry, base));
+	writel(size, entry + offsetof(struct pil_reloc_entry, size));
+	mutex_unlock(&reloc_mutex);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(qcom_pil_info_store);
+
+static void __exit pil_reloc_exit(void)
+{
+	mutex_lock(&reloc_mutex);
+	iounmap(_reloc.base);
+	_reloc.base = NULL;
+	mutex_unlock(&reloc_mutex);
+}
+module_exit(pil_reloc_exit);
+
+MODULE_DESCRIPTION("Qualcomm PIL relocation info");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/remoteproc/qcom_pil_info.h b/drivers/remoteproc/qcom_pil_info.h
new file mode 100644
index 000000000000..1b89a63ba82f
--- /dev/null
+++ b/drivers/remoteproc/qcom_pil_info.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __QCOM_PIL_INFO_H__
+#define __QCOM_PIL_INFO_H__
+
+int qcom_pil_info_store(const char *image, phys_addr_t base, size_t size);
+
+#endif
-- 
2.26.2

[PATCH v5 3/5] remoteproc: qcom: Update PIL relocation info on load

[Bjorn Andersson]

Update the PIL relocation information in IMEM with information about
where the firmware for various remoteprocs are loaded.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

Changes since v4:
- Dropped unnecessary comment about ignoring return value.

 drivers/remoteproc/Kconfig          |  3 +++
 drivers/remoteproc/qcom_q6v5_adsp.c | 16 +++++++++++++---
 drivers/remoteproc/qcom_q6v5_mss.c  |  3 +++
 drivers/remoteproc/qcom_q6v5_pas.c  | 15 ++++++++++++---
 drivers/remoteproc/qcom_q6v5_wcss.c | 14 +++++++++++---
 drivers/remoteproc/qcom_wcnss.c     | 14 +++++++++++---
 6 files changed, 53 insertions(+), 12 deletions(-)

diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index 8088ca4dd6dc..6bd42a411ca8 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -126,6 +126,7 @@ config QCOM_Q6V5_ADSP
 	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
 	depends on QCOM_SYSMON || QCOM_SYSMON=n
 	select MFD_SYSCON
+	select QCOM_PIL_INFO
 	select QCOM_MDT_LOADER
 	select QCOM_Q6V5_COMMON
 	select QCOM_RPROC_COMMON
@@ -158,6 +159,7 @@ config QCOM_Q6V5_PAS
 	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
 	depends on QCOM_SYSMON || QCOM_SYSMON=n
 	select MFD_SYSCON
+	select QCOM_PIL_INFO
 	select QCOM_MDT_LOADER
 	select QCOM_Q6V5_COMMON
 	select QCOM_RPROC_COMMON
@@ -209,6 +211,7 @@ config QCOM_WCNSS_PIL
 	depends on QCOM_SMEM
 	depends on QCOM_SYSMON || QCOM_SYSMON=n
 	select QCOM_MDT_LOADER
+	select QCOM_PIL_INFO
 	select QCOM_RPROC_COMMON
 	select QCOM_SCM
 	help
diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c b/drivers/remoteproc/qcom_q6v5_adsp.c
index d2a2574dcf35..c539e89664cb 100644
--- a/drivers/remoteproc/qcom_q6v5_adsp.c
+++ b/drivers/remoteproc/qcom_q6v5_adsp.c
@@ -26,6 +26,7 @@
 #include <linux/soc/qcom/smem_state.h>
 
 #include "qcom_common.h"
+#include "qcom_pil_info.h"
 #include "qcom_q6v5.h"
 #include "remoteproc_internal.h"
 
@@ -82,6 +83,7 @@ struct qcom_adsp {
 	unsigned int halt_lpass;
 
 	int crash_reason_smem;
+	const char *info_name;
 
 	struct completion start_done;
 	struct completion stop_done;
@@ -164,10 +166,17 @@ static int qcom_adsp_shutdown(struct qcom_adsp *adsp)
 static int adsp_load(struct rproc *rproc, const struct firmware *fw)
 {
 	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
+	int ret;
+
+	ret = qcom_mdt_load_no_init(adsp->dev, fw, rproc->firmware, 0,
+				    adsp->mem_region, adsp->mem_phys,
+				    adsp->mem_size, &adsp->mem_reloc);
+	if (ret)
+		return ret;
+
+	qcom_pil_info_store(adsp->info_name, adsp->mem_reloc, adsp->mem_size);
 
-	return qcom_mdt_load_no_init(adsp->dev, fw, rproc->firmware, 0,
-			     adsp->mem_region, adsp->mem_phys, adsp->mem_size,
-			     &adsp->mem_reloc);
+	return 0;
 }
 
 static int adsp_start(struct rproc *rproc)
@@ -436,6 +445,7 @@ static int adsp_probe(struct platform_device *pdev)
 	adsp = (struct qcom_adsp *)rproc->priv;
 	adsp->dev = &pdev->dev;
 	adsp->rproc = rproc;
+	adsp->info_name = desc->sysmon_name;
 	platform_set_drvdata(pdev, adsp);
 
 	ret = adsp_alloc_memory_region(adsp);
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index c4936f4d1e80..fdbcae11ae64 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -29,6 +29,7 @@
 
 #include "remoteproc_internal.h"
 #include "qcom_common.h"
+#include "qcom_pil_info.h"
 #include "qcom_q6v5.h"
 
 #include <linux/qcom_scm.h>
@@ -1221,6 +1222,8 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
 	else if (ret < 0)
 		dev_err(qproc->dev, "MPSS authentication failed: %d\n", ret);
 
+	qcom_pil_info_store("modem", mpss_reloc, qproc->mpss_size);
+
 release_firmware:
 	release_firmware(fw);
 out:
diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
index 3bb69f58e086..84cb19231c35 100644
--- a/drivers/remoteproc/qcom_q6v5_pas.c
+++ b/drivers/remoteproc/qcom_q6v5_pas.c
@@ -25,6 +25,7 @@
 #include <linux/soc/qcom/smem_state.h>
 
 #include "qcom_common.h"
+#include "qcom_pil_info.h"
 #include "qcom_q6v5.h"
 #include "remoteproc_internal.h"
 
@@ -64,6 +65,7 @@ struct qcom_adsp {
 	int pas_id;
 	int crash_reason_smem;
 	bool has_aggre2_clk;
+	const char *info_name;
 
 	struct completion start_done;
 	struct completion stop_done;
@@ -117,11 +119,17 @@ static void adsp_pds_disable(struct qcom_adsp *adsp, struct device **pds,
 static int adsp_load(struct rproc *rproc, const struct firmware *fw)
 {
 	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
+	int ret;
 
-	return qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id,
-			     adsp->mem_region, adsp->mem_phys, adsp->mem_size,
-			     &adsp->mem_reloc);
+	ret = qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id,
+			    adsp->mem_region, adsp->mem_phys, adsp->mem_size,
+			    &adsp->mem_reloc);
+	if (ret)
+		return ret;
 
+	qcom_pil_info_store(adsp->info_name, adsp->mem_reloc, adsp->mem_size);
+
+	return 0;
 }
 
 static int adsp_start(struct rproc *rproc)
@@ -405,6 +413,7 @@ static int adsp_probe(struct platform_device *pdev)
 	adsp->rproc = rproc;
 	adsp->pas_id = desc->pas_id;
 	adsp->has_aggre2_clk = desc->has_aggre2_clk;
+	adsp->info_name = desc->sysmon_name;
 	platform_set_drvdata(pdev, adsp);
 
 	ret = adsp_alloc_memory_region(adsp);
diff --git a/drivers/remoteproc/qcom_q6v5_wcss.c b/drivers/remoteproc/qcom_q6v5_wcss.c
index f1924b740a10..962e37a86b8b 100644
--- a/drivers/remoteproc/qcom_q6v5_wcss.c
+++ b/drivers/remoteproc/qcom_q6v5_wcss.c
@@ -421,10 +421,18 @@ static void *q6v5_wcss_da_to_va(struct rproc *rproc, u64 da, size_t len)
 static int q6v5_wcss_load(struct rproc *rproc, const struct firmware *fw)
 {
 	struct q6v5_wcss *wcss = rproc->priv;
+	int ret;
+
+	ret = qcom_mdt_load_no_init(wcss->dev, fw, rproc->firmware,
+				    0, wcss->mem_region, wcss->mem_phys,
+				    wcss->mem_size, &wcss->mem_reloc);
+	if (ret)
+		return ret;
+
+	/* Failures only affect post mortem debugging, so ignore return value */
+	qcom_pil_info_store("wcnss", wcss->mem_reloc, wcss->mem_size);
 
-	return qcom_mdt_load_no_init(wcss->dev, fw, rproc->firmware,
-				     0, wcss->mem_region, wcss->mem_phys,
-				     wcss->mem_size, &wcss->mem_reloc);
+	return ret;
 }
 
 static const struct rproc_ops q6v5_wcss_ops = {
diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c
index 5d65e1a9329a..229482b3231f 100644
--- a/drivers/remoteproc/qcom_wcnss.c
+++ b/drivers/remoteproc/qcom_wcnss.c
@@ -27,6 +27,7 @@
 
 #include "qcom_common.h"
 #include "remoteproc_internal.h"
+#include "qcom_pil_info.h"
 #include "qcom_wcnss.h"
 
 #define WCNSS_CRASH_REASON_SMEM		422
@@ -145,10 +146,17 @@ void qcom_wcnss_assign_iris(struct qcom_wcnss *wcnss,
 static int wcnss_load(struct rproc *rproc, const struct firmware *fw)
 {
 	struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
+	int ret;
+
+	ret = qcom_mdt_load(wcnss->dev, fw, rproc->firmware, WCNSS_PAS_ID,
+			    wcnss->mem_region, wcnss->mem_phys,
+			    wcnss->mem_size, &wcnss->mem_reloc);
+	if (ret)
+		return ret;
+
+	qcom_pil_info_store("wcnss", wcnss->mem_reloc, wcnss->mem_size);
 
-	return qcom_mdt_load(wcnss->dev, fw, rproc->firmware, WCNSS_PAS_ID,
-			     wcnss->mem_region, wcnss->mem_phys,
-			     wcnss->mem_size, &wcnss->mem_reloc);
+	return 0;
 }
 
 static void wcnss_indicate_nv_download(struct qcom_wcnss *wcnss)
-- 
2.26.2

[PATCH v5 4/5] arm64: dts: qcom: qcs404: Add IMEM and PIL info region

[Bjorn Andersson]

Add a simple-mfd representing IMEM on QCS404 and define the PIL
relocation info region, so that post mortem tools will be able to locate
the loaded remoteprocs.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

Changes since v4:
- imem is no longer compatible with "syscon"

 arch/arm64/boot/dts/qcom/qcs404.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs404.dtsi b/arch/arm64/boot/dts/qcom/qcs404.dtsi
index c685a1664810..b654b802e95c 100644
--- a/arch/arm64/boot/dts/qcom/qcs404.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcs404.dtsi
@@ -1097,6 +1097,21 @@ blsp2_spi0: spi@7af5000 {
 			status = "disabled";
 		};
 
+		imem@8600000 {
+			compatible = "simple-mfd";
+			reg = <0x08600000 0x1000>;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			ranges = <0 0x08600000 0x1000>;
+
+			pil-reloc@94c {
+				compatible = "qcom,pil-reloc-info";
+				reg = <0x94c 0xc8>;
+			};
+		};
+
 		intc: interrupt-controller@b000000 {
 			compatible = "qcom,msm-qgic2";
 			interrupt-controller;
-- 
2.26.2

[PATCH v5 5/5] arm64: dts: qcom: sdm845: Add IMEM and PIL info region

[Bjorn Andersson]

Add a simple-mfd representing IMEM on SDM845 and define the PIL
relocation info region, so that post mortem tools will be able to locate
the loaded remoteprocs.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

Changes since v4:
- imem is no longer compatible with "syscon"

 arch/arm64/boot/dts/qcom/sdm845.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index 7cce6f1b7c9e..1abbbe7a43a0 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -3716,6 +3716,21 @@ spmi_bus: spmi@c440000 {
 			cell-index = <0>;
 		};
 
+		imem@146bf000 {
+			compatible = "simple-mfd";
+			reg = <0 0x146bf000 0 0x1000>;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			ranges = <0 0 0x146bf000 0x1000>;
+
+			pil-reloc@94c {
+				compatible = "qcom,pil-reloc-info";
+				reg = <0x94c 0xc8>;
+			};
+		};
+
 		apps_smmu: iommu@15000000 {
 			compatible = "qcom,sdm845-smmu-500", "arm,mmu-500";
 			reg = <0 0x15000000 0 0x80000>;
-- 
2.26.2

Re: [PATCH v5 0/5] remoteproc: qcom: PIL info support

[Vinod Koul]

On 12-05-20, 22:56, Bjorn Andersson wrote:
> Introduce support for filling out the relocation information in IMEM, to aid
> post mortem debug tools to locate the various remoteprocs.

Reviewed-by: Vinod Koul <vkoul@kernel.org>

-- 
~Vinod

Re: [PATCH v5 3/5] remoteproc: qcom: Update PIL relocation info on load

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 2336 bytes --]

Hi Bjorn,

I love your patch! Yet something to improve:

[auto build test ERROR on robh/for-next]
[also build test ERROR on linus/master v5.7-rc5 next-20200514]
[cannot apply to agross-msm/qcom/for-next remoteproc/for-next rpmsg/for-next hwspinlock/for-next]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Bjorn-Andersson/remoteproc-qcom-PIL-info-support/20200514-161851
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

drivers/remoteproc/qcom_q6v5_wcss.c: In function 'q6v5_wcss_load':
>> drivers/remoteproc/qcom_q6v5_wcss.c:433:2: error: implicit declaration of function 'qcom_pil_info_store' [-Werror=implicit-function-declaration]
433 |  qcom_pil_info_store("wcnss", wcss->mem_reloc, wcss->mem_size);
|  ^~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +/qcom_pil_info_store +433 drivers/remoteproc/qcom_q6v5_wcss.c

   420	
   421	static int q6v5_wcss_load(struct rproc *rproc, const struct firmware *fw)
   422	{
   423		struct q6v5_wcss *wcss = rproc->priv;
   424		int ret;
   425	
   426		ret = qcom_mdt_load_no_init(wcss->dev, fw, rproc->firmware,
   427					    0, wcss->mem_region, wcss->mem_phys,
   428					    wcss->mem_size, &wcss->mem_reloc);
   429		if (ret)
   430			return ret;
   431	
   432		/* Failures only affect post mortem debugging, so ignore return value */
 > 433		qcom_pil_info_store("wcnss", wcss->mem_reloc, wcss->mem_size);
   434	
   435		return ret;
   436	}
   437	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 71781 bytes --]

Re: [PATCH v5 3/5] remoteproc: qcom: Update PIL relocation info on load

[rishabhb]

On 2020-05-12 22:56, Bjorn Andersson wrote:
> Update the PIL relocation information in IMEM with information about
> where the firmware for various remoteprocs are loaded.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
> 
> Changes since v4:
> - Dropped unnecessary comment about ignoring return value.
> 
>  drivers/remoteproc/Kconfig          |  3 +++
>  drivers/remoteproc/qcom_q6v5_adsp.c | 16 +++++++++++++---
>  drivers/remoteproc/qcom_q6v5_mss.c  |  3 +++
>  drivers/remoteproc/qcom_q6v5_pas.c  | 15 ++++++++++++---
>  drivers/remoteproc/qcom_q6v5_wcss.c | 14 +++++++++++---
>  drivers/remoteproc/qcom_wcnss.c     | 14 +++++++++++---
>  6 files changed, 53 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
> index 8088ca4dd6dc..6bd42a411ca8 100644
> --- a/drivers/remoteproc/Kconfig
> +++ b/drivers/remoteproc/Kconfig
> @@ -126,6 +126,7 @@ config QCOM_Q6V5_ADSP
>  	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
>  	depends on QCOM_SYSMON || QCOM_SYSMON=n
>  	select MFD_SYSCON
> +	select QCOM_PIL_INFO
>  	select QCOM_MDT_LOADER
>  	select QCOM_Q6V5_COMMON
>  	select QCOM_RPROC_COMMON
> @@ -158,6 +159,7 @@ config QCOM_Q6V5_PAS
>  	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
>  	depends on QCOM_SYSMON || QCOM_SYSMON=n
>  	select MFD_SYSCON
> +	select QCOM_PIL_INFO
>  	select QCOM_MDT_LOADER
>  	select QCOM_Q6V5_COMMON
>  	select QCOM_RPROC_COMMON
> @@ -209,6 +211,7 @@ config QCOM_WCNSS_PIL
>  	depends on QCOM_SMEM
>  	depends on QCOM_SYSMON || QCOM_SYSMON=n
>  	select QCOM_MDT_LOADER
> +	select QCOM_PIL_INFO
>  	select QCOM_RPROC_COMMON
>  	select QCOM_SCM
>  	help
> diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c
> b/drivers/remoteproc/qcom_q6v5_adsp.c
> index d2a2574dcf35..c539e89664cb 100644
> --- a/drivers/remoteproc/qcom_q6v5_adsp.c
> +++ b/drivers/remoteproc/qcom_q6v5_adsp.c
> @@ -26,6 +26,7 @@
>  #include <linux/soc/qcom/smem_state.h>
> 
>  #include "qcom_common.h"
> +#include "qcom_pil_info.h"
>  #include "qcom_q6v5.h"
>  #include "remoteproc_internal.h"
> 
> @@ -82,6 +83,7 @@ struct qcom_adsp {
>  	unsigned int halt_lpass;
> 
>  	int crash_reason_smem;
> +	const char *info_name;
> 
>  	struct completion start_done;
>  	struct completion stop_done;
> @@ -164,10 +166,17 @@ static int qcom_adsp_shutdown(struct qcom_adsp 
> *adsp)
>  static int adsp_load(struct rproc *rproc, const struct firmware *fw)
>  {
>  	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
> +	int ret;
> +
> +	ret = qcom_mdt_load_no_init(adsp->dev, fw, rproc->firmware, 0,
> +				    adsp->mem_region, adsp->mem_phys,
> +				    adsp->mem_size, &adsp->mem_reloc);
> +	if (ret)
> +		return ret;
> +
> +	qcom_pil_info_store(adsp->info_name, adsp->mem_reloc, 
> adsp->mem_size);
> 
> -	return qcom_mdt_load_no_init(adsp->dev, fw, rproc->firmware, 0,
> -			     adsp->mem_region, adsp->mem_phys, adsp->mem_size,
> -			     &adsp->mem_reloc);
> +	return 0;
>  }
> 
>  static int adsp_start(struct rproc *rproc)
> @@ -436,6 +445,7 @@ static int adsp_probe(struct platform_device *pdev)
>  	adsp = (struct qcom_adsp *)rproc->priv;
>  	adsp->dev = &pdev->dev;
>  	adsp->rproc = rproc;
> +	adsp->info_name = desc->sysmon_name;
>  	platform_set_drvdata(pdev, adsp);
> 
>  	ret = adsp_alloc_memory_region(adsp);
> diff --git a/drivers/remoteproc/qcom_q6v5_mss.c
> b/drivers/remoteproc/qcom_q6v5_mss.c
> index c4936f4d1e80..fdbcae11ae64 100644
> --- a/drivers/remoteproc/qcom_q6v5_mss.c
> +++ b/drivers/remoteproc/qcom_q6v5_mss.c
> @@ -29,6 +29,7 @@
> 
>  #include "remoteproc_internal.h"
>  #include "qcom_common.h"
> +#include "qcom_pil_info.h"
>  #include "qcom_q6v5.h"
> 
>  #include <linux/qcom_scm.h>
> @@ -1221,6 +1222,8 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
>  	else if (ret < 0)
>  		dev_err(qproc->dev, "MPSS authentication failed: %d\n", ret);
> 
> +	qcom_pil_info_store("modem", mpss_reloc, qproc->mpss_size);
> +
>  release_firmware:
>  	release_firmware(fw);
>  out:
> diff --git a/drivers/remoteproc/qcom_q6v5_pas.c
> b/drivers/remoteproc/qcom_q6v5_pas.c
> index 3bb69f58e086..84cb19231c35 100644
> --- a/drivers/remoteproc/qcom_q6v5_pas.c
> +++ b/drivers/remoteproc/qcom_q6v5_pas.c
> @@ -25,6 +25,7 @@
>  #include <linux/soc/qcom/smem_state.h>
> 
>  #include "qcom_common.h"
> +#include "qcom_pil_info.h"
>  #include "qcom_q6v5.h"
>  #include "remoteproc_internal.h"
> 
> @@ -64,6 +65,7 @@ struct qcom_adsp {
>  	int pas_id;
>  	int crash_reason_smem;
>  	bool has_aggre2_clk;
> +	const char *info_name;
> 
>  	struct completion start_done;
>  	struct completion stop_done;
> @@ -117,11 +119,17 @@ static void adsp_pds_disable(struct qcom_adsp
> *adsp, struct device **pds,
>  static int adsp_load(struct rproc *rproc, const struct firmware *fw)
>  {
>  	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
> +	int ret;
> 
> -	return qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id,
> -			     adsp->mem_region, adsp->mem_phys, adsp->mem_size,
> -			     &adsp->mem_reloc);
> +	ret = qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id,
> +			    adsp->mem_region, adsp->mem_phys, adsp->mem_size,
> +			    &adsp->mem_reloc);
> +	if (ret)
> +		return ret;
> 
> +	qcom_pil_info_store(adsp->info_name, adsp->mem_reloc, 
> adsp->mem_size);
mem_reloc is used to calculate  offset and then we again add that offset 
to the
ioremapped region base. So we should pass adsp->mem_phys as start here?
> +
> +	return 0;
>  }
> 
>  static int adsp_start(struct rproc *rproc)
> @@ -405,6 +413,7 @@ static int adsp_probe(struct platform_device *pdev)
>  	adsp->rproc = rproc;
>  	adsp->pas_id = desc->pas_id;
>  	adsp->has_aggre2_clk = desc->has_aggre2_clk;
> +	adsp->info_name = desc->sysmon_name;
>  	platform_set_drvdata(pdev, adsp);
> 
>  	ret = adsp_alloc_memory_region(adsp);
> diff --git a/drivers/remoteproc/qcom_q6v5_wcss.c
> b/drivers/remoteproc/qcom_q6v5_wcss.c
> index f1924b740a10..962e37a86b8b 100644
> --- a/drivers/remoteproc/qcom_q6v5_wcss.c
> +++ b/drivers/remoteproc/qcom_q6v5_wcss.c
> @@ -421,10 +421,18 @@ static void *q6v5_wcss_da_to_va(struct rproc
> *rproc, u64 da, size_t len)
>  static int q6v5_wcss_load(struct rproc *rproc, const struct firmware 
> *fw)
>  {
>  	struct q6v5_wcss *wcss = rproc->priv;
> +	int ret;
> +
> +	ret = qcom_mdt_load_no_init(wcss->dev, fw, rproc->firmware,
> +				    0, wcss->mem_region, wcss->mem_phys,
> +				    wcss->mem_size, &wcss->mem_reloc);
> +	if (ret)
> +		return ret;
> +
> +	/* Failures only affect post mortem debugging, so ignore return value 
> */
> +	qcom_pil_info_store("wcnss", wcss->mem_reloc, wcss->mem_size);
> 
> -	return qcom_mdt_load_no_init(wcss->dev, fw, rproc->firmware,
> -				     0, wcss->mem_region, wcss->mem_phys,
> -				     wcss->mem_size, &wcss->mem_reloc);
> +	return ret;
>  }
> 
>  static const struct rproc_ops q6v5_wcss_ops = {
> diff --git a/drivers/remoteproc/qcom_wcnss.c 
> b/drivers/remoteproc/qcom_wcnss.c
> index 5d65e1a9329a..229482b3231f 100644
> --- a/drivers/remoteproc/qcom_wcnss.c
> +++ b/drivers/remoteproc/qcom_wcnss.c
> @@ -27,6 +27,7 @@
> 
>  #include "qcom_common.h"
>  #include "remoteproc_internal.h"
> +#include "qcom_pil_info.h"
>  #include "qcom_wcnss.h"
> 
>  #define WCNSS_CRASH_REASON_SMEM		422
> @@ -145,10 +146,17 @@ void qcom_wcnss_assign_iris(struct qcom_wcnss 
> *wcnss,
>  static int wcnss_load(struct rproc *rproc, const struct firmware *fw)
>  {
>  	struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
> +	int ret;
> +
> +	ret = qcom_mdt_load(wcnss->dev, fw, rproc->firmware, WCNSS_PAS_ID,
> +			    wcnss->mem_region, wcnss->mem_phys,
> +			    wcnss->mem_size, &wcnss->mem_reloc);
> +	if (ret)
> +		return ret;
> +
> +	qcom_pil_info_store("wcnss", wcnss->mem_reloc, wcnss->mem_size);
> 
> -	return qcom_mdt_load(wcnss->dev, fw, rproc->firmware, WCNSS_PAS_ID,
> -			     wcnss->mem_region, wcnss->mem_phys,
> -			     wcnss->mem_size, &wcnss->mem_reloc);
> +	return 0;
>  }
> 
>  static void wcnss_indicate_nv_download(struct qcom_wcnss *wcnss)

Re: [PATCH v5 3/5] remoteproc: qcom: Update PIL relocation info on load

[Bjorn Andersson]

On Tue 19 May 11:14 PDT 2020, rishabhb@codeaurora.org wrote:

> On 2020-05-12 22:56, Bjorn Andersson wrote:
> > Update the PIL relocation information in IMEM with information about
> > where the firmware for various remoteprocs are loaded.
> > 
> > Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> > ---
> > 
> > Changes since v4:
> > - Dropped unnecessary comment about ignoring return value.
> > 
> >  drivers/remoteproc/Kconfig          |  3 +++
> >  drivers/remoteproc/qcom_q6v5_adsp.c | 16 +++++++++++++---
> >  drivers/remoteproc/qcom_q6v5_mss.c  |  3 +++
> >  drivers/remoteproc/qcom_q6v5_pas.c  | 15 ++++++++++++---
> >  drivers/remoteproc/qcom_q6v5_wcss.c | 14 +++++++++++---
> >  drivers/remoteproc/qcom_wcnss.c     | 14 +++++++++++---
> >  6 files changed, 53 insertions(+), 12 deletions(-)
> > 
> > diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
> > index 8088ca4dd6dc..6bd42a411ca8 100644
> > --- a/drivers/remoteproc/Kconfig
> > +++ b/drivers/remoteproc/Kconfig
> > @@ -126,6 +126,7 @@ config QCOM_Q6V5_ADSP
> >  	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
> >  	depends on QCOM_SYSMON || QCOM_SYSMON=n
> >  	select MFD_SYSCON
> > +	select QCOM_PIL_INFO
> >  	select QCOM_MDT_LOADER
> >  	select QCOM_Q6V5_COMMON
> >  	select QCOM_RPROC_COMMON
> > @@ -158,6 +159,7 @@ config QCOM_Q6V5_PAS
> >  	depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n
> >  	depends on QCOM_SYSMON || QCOM_SYSMON=n
> >  	select MFD_SYSCON
> > +	select QCOM_PIL_INFO
> >  	select QCOM_MDT_LOADER
> >  	select QCOM_Q6V5_COMMON
> >  	select QCOM_RPROC_COMMON
> > @@ -209,6 +211,7 @@ config QCOM_WCNSS_PIL
> >  	depends on QCOM_SMEM
> >  	depends on QCOM_SYSMON || QCOM_SYSMON=n
> >  	select QCOM_MDT_LOADER
> > +	select QCOM_PIL_INFO
> >  	select QCOM_RPROC_COMMON
> >  	select QCOM_SCM
> >  	help
> > diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c
> > b/drivers/remoteproc/qcom_q6v5_adsp.c
> > index d2a2574dcf35..c539e89664cb 100644
> > --- a/drivers/remoteproc/qcom_q6v5_adsp.c
> > +++ b/drivers/remoteproc/qcom_q6v5_adsp.c
> > @@ -26,6 +26,7 @@
> >  #include <linux/soc/qcom/smem_state.h>
> > 
> >  #include "qcom_common.h"
> > +#include "qcom_pil_info.h"
> >  #include "qcom_q6v5.h"
> >  #include "remoteproc_internal.h"
> > 
> > @@ -82,6 +83,7 @@ struct qcom_adsp {
> >  	unsigned int halt_lpass;
> > 
> >  	int crash_reason_smem;
> > +	const char *info_name;
> > 
> >  	struct completion start_done;
> >  	struct completion stop_done;
> > @@ -164,10 +166,17 @@ static int qcom_adsp_shutdown(struct qcom_adsp
> > *adsp)
> >  static int adsp_load(struct rproc *rproc, const struct firmware *fw)
> >  {
> >  	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
> > +	int ret;
> > +
> > +	ret = qcom_mdt_load_no_init(adsp->dev, fw, rproc->firmware, 0,
> > +				    adsp->mem_region, adsp->mem_phys,
> > +				    adsp->mem_size, &adsp->mem_reloc);
> > +	if (ret)
> > +		return ret;
> > +
> > +	qcom_pil_info_store(adsp->info_name, adsp->mem_reloc, adsp->mem_size);
> > 
> > -	return qcom_mdt_load_no_init(adsp->dev, fw, rproc->firmware, 0,
> > -			     adsp->mem_region, adsp->mem_phys, adsp->mem_size,
> > -			     &adsp->mem_reloc);
> > +	return 0;
> >  }
> > 
> >  static int adsp_start(struct rproc *rproc)
> > @@ -436,6 +445,7 @@ static int adsp_probe(struct platform_device *pdev)
> >  	adsp = (struct qcom_adsp *)rproc->priv;
> >  	adsp->dev = &pdev->dev;
> >  	adsp->rproc = rproc;
> > +	adsp->info_name = desc->sysmon_name;
> >  	platform_set_drvdata(pdev, adsp);
> > 
> >  	ret = adsp_alloc_memory_region(adsp);
> > diff --git a/drivers/remoteproc/qcom_q6v5_mss.c
> > b/drivers/remoteproc/qcom_q6v5_mss.c
> > index c4936f4d1e80..fdbcae11ae64 100644
> > --- a/drivers/remoteproc/qcom_q6v5_mss.c
> > +++ b/drivers/remoteproc/qcom_q6v5_mss.c
> > @@ -29,6 +29,7 @@
> > 
> >  #include "remoteproc_internal.h"
> >  #include "qcom_common.h"
> > +#include "qcom_pil_info.h"
> >  #include "qcom_q6v5.h"
> > 
> >  #include <linux/qcom_scm.h>
> > @@ -1221,6 +1222,8 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
> >  	else if (ret < 0)
> >  		dev_err(qproc->dev, "MPSS authentication failed: %d\n", ret);
> > 
> > +	qcom_pil_info_store("modem", mpss_reloc, qproc->mpss_size);
> > +
> >  release_firmware:
> >  	release_firmware(fw);
> >  out:
> > diff --git a/drivers/remoteproc/qcom_q6v5_pas.c
> > b/drivers/remoteproc/qcom_q6v5_pas.c
> > index 3bb69f58e086..84cb19231c35 100644
> > --- a/drivers/remoteproc/qcom_q6v5_pas.c
> > +++ b/drivers/remoteproc/qcom_q6v5_pas.c
> > @@ -25,6 +25,7 @@
> >  #include <linux/soc/qcom/smem_state.h>
> > 
> >  #include "qcom_common.h"
> > +#include "qcom_pil_info.h"
> >  #include "qcom_q6v5.h"
> >  #include "remoteproc_internal.h"
> > 
> > @@ -64,6 +65,7 @@ struct qcom_adsp {
> >  	int pas_id;
> >  	int crash_reason_smem;
> >  	bool has_aggre2_clk;
> > +	const char *info_name;
> > 
> >  	struct completion start_done;
> >  	struct completion stop_done;
> > @@ -117,11 +119,17 @@ static void adsp_pds_disable(struct qcom_adsp
> > *adsp, struct device **pds,
> >  static int adsp_load(struct rproc *rproc, const struct firmware *fw)
> >  {
> >  	struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
> > +	int ret;
> > 
> > -	return qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id,
> > -			     adsp->mem_region, adsp->mem_phys, adsp->mem_size,
> > -			     &adsp->mem_reloc);
> > +	ret = qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id,
> > +			    adsp->mem_region, adsp->mem_phys, adsp->mem_size,
> > +			    &adsp->mem_reloc);
> > +	if (ret)
> > +		return ret;
> > 
> > +	qcom_pil_info_store(adsp->info_name, adsp->mem_reloc, adsp->mem_size);
> mem_reloc is used to calculate  offset and then we again add that offset to
> the
> ioremapped region base. So we should pass adsp->mem_phys as start here?

You're correct, I will respin this.

Thanks,
Bjorn

Re: [PATCH v5 1/5] dt-bindings: remoteproc: Add Qualcomm PIL info binding

[Mathieu Poirier]

On Tue, May 12, 2020 at 10:56:37PM -0700, Bjorn Andersson wrote:
> Add a devicetree binding for the Qualcomm peripheral image loader
> relocation information region found in the IMEM.
> 
> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
> 
> Changes since v4:
> - Fixed reg in example to make it compile
> 
>  .../bindings/remoteproc/qcom,pil-info.yaml    | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

> 
> diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml
> new file mode 100644
> index 000000000000..87c52316ddbd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml
> @@ -0,0 +1,44 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/remoteproc/qcom,pil-info.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm peripheral image loader relocation info binding
> +
> +maintainers:
> +  - Bjorn Andersson <bjorn.andersson@linaro.org>
> +
> +description:
> +  The Qualcomm peripheral image loader relocation memory region, in IMEM, is
> +  used for communicating remoteproc relocation information to post mortem
> +  debugging tools.
> +
> +properties:
> +  compatible:
> +    const: qcom,pil-reloc-info
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +examples:
> +  - |
> +    imem@146bf000 {
> +      compatible = "syscon", "simple-mfd";
> +      reg = <0x146bf000 0x1000>;
> +
> +      #address-cells = <1>;
> +      #size-cells = <1>;
> +
> +      ranges = <0 0x146bf000 0x1000>;
> +
> +      pil-reloc@94c {
> +        compatible = "qcom,pil-reloc-info";
> +        reg = <0x94c 0xc8>;
> +      };
> +    };
> +...
> -- 
> 2.26.2
> 

Re: [PATCH v5 2/5] remoteproc: qcom: Introduce helper to store pil info in IMEM

[Mathieu Poirier]

On Tue, May 12, 2020 at 10:56:38PM -0700, Bjorn Andersson wrote:
> A region in IMEM is used to communicate load addresses of remoteproc to
> post mortem debug tools. Implement a helper function that can be used to
> store this information in order to enable these tools to process
> collected ramdumps.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
> 
> Changes since v4:
> - Replaced platform_driver by just a single helper function
> - Lazy initialization of mapping
> - Cleaned up search loop
> - Replaced regmap access of IMEM with ioremap and normal accessors
> 
>  drivers/remoteproc/Kconfig         |   3 +
>  drivers/remoteproc/Makefile        |   1 +
>  drivers/remoteproc/qcom_pil_info.c | 124 +++++++++++++++++++++++++++++
>  drivers/remoteproc/qcom_pil_info.h |   7 ++
>  4 files changed, 135 insertions(+)
>  create mode 100644 drivers/remoteproc/qcom_pil_info.c
>  create mode 100644 drivers/remoteproc/qcom_pil_info.h
> 
> diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
> index fbaed079b299..8088ca4dd6dc 100644
> --- a/drivers/remoteproc/Kconfig
> +++ b/drivers/remoteproc/Kconfig
> @@ -107,6 +107,9 @@ config KEYSTONE_REMOTEPROC
>  	  It's safe to say N here if you're not interested in the Keystone
>  	  DSPs or just want to use a bare minimum kernel.
>  
> +config QCOM_PIL_INFO
> +	tristate
> +
>  config QCOM_RPROC_COMMON
>  	tristate
>  
> diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile
> index 0effd3825035..cc0f631adb3b 100644
> --- a/drivers/remoteproc/Makefile
> +++ b/drivers/remoteproc/Makefile
> @@ -15,6 +15,7 @@ obj-$(CONFIG_OMAP_REMOTEPROC)		+= omap_remoteproc.o
>  obj-$(CONFIG_WKUP_M3_RPROC)		+= wkup_m3_rproc.o
>  obj-$(CONFIG_DA8XX_REMOTEPROC)		+= da8xx_remoteproc.o
>  obj-$(CONFIG_KEYSTONE_REMOTEPROC)	+= keystone_remoteproc.o
> +obj-$(CONFIG_QCOM_PIL_INFO)		+= qcom_pil_info.o
>  obj-$(CONFIG_QCOM_RPROC_COMMON)		+= qcom_common.o
>  obj-$(CONFIG_QCOM_Q6V5_COMMON)		+= qcom_q6v5.o
>  obj-$(CONFIG_QCOM_Q6V5_ADSP)		+= qcom_q6v5_adsp.o
> diff --git a/drivers/remoteproc/qcom_pil_info.c b/drivers/remoteproc/qcom_pil_info.c
> new file mode 100644
> index 000000000000..0785c7cde2d3
> --- /dev/null
> +++ b/drivers/remoteproc/qcom_pil_info.c
> @@ -0,0 +1,124 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2019-2020 Linaro Ltd.
> + */
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/mutex.h>
> +#include <linux/of_address.h>
> +
> +#define PIL_RELOC_NAME_LEN	8
> +
> +struct pil_reloc_entry {
> +	char name[PIL_RELOC_NAME_LEN];
> +	__le64 base;
> +	__le32 size;
> +} __packed;
> +
> +struct pil_reloc {
> +	struct device *dev;
> +	void __iomem *base;
> +	size_t num_entries;
> +};
> +
> +static struct pil_reloc _reloc __read_mostly;
> +static DEFINE_MUTEX(reloc_mutex);
> +
> +static int qcom_pil_info_init(void)
> +{
> +	struct device_node *np;
> +	struct resource imem;
> +	void __iomem *base;
> +	int ret;
> +
> +	/* Already initialized? */
> +	if (_reloc.base)
> +		return 0;
> +
> +	np = of_find_compatible_node(NULL, NULL, "qcom,pil-reloc-info");
> +	if (!np)
> +		return -ENOENT;
> +
> +	ret = of_address_to_resource(np, 0, &imem);
> +	of_node_put(np);
> +	if (ret < 0)
> +		return ret;
> +
> +	base = ioremap(imem.start, resource_size(&imem));
> +	if (!base) {
> +		pr_err("failed to map PIL relocation info region\n");
> +		return -ENOMEM;
> +	}
> +
> +	memset_io(base, 0, resource_size(&imem));
> +
> +	_reloc.base = base;
> +	_reloc.num_entries = resource_size(&imem) / sizeof(struct pil_reloc_entry);
> +
> +	return 0;
> +}
> +
> +/**
> + * qcom_pil_info_store() - store PIL information of image in IMEM
> + * @image:	name of the image
> + * @base:	base address of the loaded image
> + * @size:	size of the loaded image
> + *
> + * Return: 0 on success, negative errno on failure
> + */
> +int qcom_pil_info_store(const char *image, phys_addr_t base, size_t size)
> +{
> +	char buf[PIL_RELOC_NAME_LEN];
> +	void __iomem *entry;
> +	int ret;
> +	int i;
> +
> +	mutex_lock(&reloc_mutex);
> +	ret = qcom_pil_info_init();
> +	if (ret < 0) {
> +		mutex_unlock(&reloc_mutex);
> +		return ret;
> +	}
> +
> +	for (i = 0; i < _reloc.num_entries; i++) {
> +		entry = _reloc.base + i * sizeof(struct pil_reloc_entry);
> +
> +		memcpy_fromio(buf, entry, PIL_RELOC_NAME_LEN);
> +
> +		/*
> +		 * An empty record means we didn't find it, given that the
> +		 * records are packed.
> +		 */
> +		if (!buf[0])
> +			goto found_unused;
> +
> +		if (!strncmp(buf, image, PIL_RELOC_NAME_LEN))
> +			goto found_existing;
> +	}
> +
> +	pr_warn("insufficient PIL info slots\n");
> +	mutex_unlock(&reloc_mutex);
> +	return -ENOMEM;
> +
> +found_unused:
> +	memcpy_toio(entry, image, PIL_RELOC_NAME_LEN);
> +found_existing:
> +	writel(base, entry + offsetof(struct pil_reloc_entry, base));
> +	writel(size, entry + offsetof(struct pil_reloc_entry, size));
> +	mutex_unlock(&reloc_mutex);
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL_GPL(qcom_pil_info_store);
> +
> +static void __exit pil_reloc_exit(void)
> +{
> +	mutex_lock(&reloc_mutex);
> +	iounmap(_reloc.base);
> +	_reloc.base = NULL;
> +	mutex_unlock(&reloc_mutex);
> +}
> +module_exit(pil_reloc_exit);
> +
> +MODULE_DESCRIPTION("Qualcomm PIL relocation info");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/remoteproc/qcom_pil_info.h b/drivers/remoteproc/qcom_pil_info.h
> new file mode 100644
> index 000000000000..1b89a63ba82f
> --- /dev/null
> +++ b/drivers/remoteproc/qcom_pil_info.h
> @@ -0,0 +1,7 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +#ifndef __QCOM_PIL_INFO_H__
> +#define __QCOM_PIL_INFO_H__
> +
> +int qcom_pil_info_store(const char *image, phys_addr_t base, size_t size);
> +
> +#endif

Very clean an easy to understand.

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

> -- 
> 2.26.2
> 

Re: [PATCH v5 1/5] dt-bindings: remoteproc: Add Qualcomm PIL info binding

[Rob Herring]

On Tue, 12 May 2020 22:56:37 -0700, Bjorn Andersson wrote:
> Add a devicetree binding for the Qualcomm peripheral image loader
> relocation information region found in the IMEM.
> 
> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
> 
> Changes since v4:
> - Fixed reg in example to make it compile
> 
>  .../bindings/remoteproc/qcom,pil-info.yaml    | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,pil-info.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>