[PATCH 0/2] remoteproc: qcom: Minidump improvements

[PATCH 0/2] remoteproc: qcom: Minidump improvements

[Siddharth Gupta]

This patchset adds a fallback mechanism to the minidump flow for
remoteprocs which do not support minidump in its firmware.

Patch 1: Export the base coredump APIs to allow for fallback mechanism.
Patch 2: Fallback to full coredumps when SMEM is not initialized at all.

Siddharth Gupta (2):
  remoteproc: core: Export the rproc coredump APIs
  remoteproc: qcom: Add full coredump fallback mechanism

 drivers/remoteproc/qcom_common.c         | 9 +++++++--
 drivers/remoteproc/qcom_q6v5_pas.c       | 1 +
 drivers/remoteproc/remoteproc_coredump.c | 2 ++
 drivers/remoteproc/remoteproc_internal.h | 4 ----
 include/linux/remoteproc.h               | 4 ++++
 5 files changed, 14 insertions(+), 6 deletions(-)

-- 
Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH 1/2] remoteproc: core: Export the rproc coredump APIs

[Siddharth Gupta]

The remoteproc coredump APIs are currently only part of the internal
remoteproc header. This prevents the remoteproc platform drivers from
using these APIs when needed. This change moves the rproc_coredump()
and rproc_coredump_cleanup() APIs to the linux header and marks them
as exported symbols.

Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
---
 drivers/remoteproc/remoteproc_coredump.c | 2 ++
 drivers/remoteproc/remoteproc_internal.h | 4 ----
 include/linux/remoteproc.h               | 4 ++++
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/remoteproc/remoteproc_coredump.c b/drivers/remoteproc/remoteproc_coredump.c
index aee657c..aa45b68 100644
--- a/drivers/remoteproc/remoteproc_coredump.c
+++ b/drivers/remoteproc/remoteproc_coredump.c
@@ -32,6 +32,7 @@ void rproc_coredump_cleanup(struct rproc *rproc)
 		kfree(entry);
 	}
 }
+EXPORT_SYMBOL(rproc_coredump_cleanup);
 
 /**
  * rproc_coredump_add_segment() - add segment of device memory to coredump
@@ -327,6 +328,7 @@ void rproc_coredump(struct rproc *rproc)
 	 */
 	wait_for_completion(&dump_state.dump_done);
 }
+EXPORT_SYMBOL(rproc_coredump);
 
 /**
  * rproc_coredump_using_sections() - perform coredump using section headers
diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h
index a328e63..a492a41 100644
--- a/drivers/remoteproc/remoteproc_internal.h
+++ b/drivers/remoteproc/remoteproc_internal.h
@@ -49,10 +49,6 @@ extern struct class rproc_class;
 int rproc_init_sysfs(void);
 void rproc_exit_sysfs(void);
 
-/* from remoteproc_coredump.c */
-void rproc_coredump_cleanup(struct rproc *rproc);
-void rproc_coredump(struct rproc *rproc);
-
 #ifdef CONFIG_REMOTEPROC_CDEV
 void rproc_init_cdev(void);
 void rproc_exit_cdev(void);
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index a5b37bc..10a60e8 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -674,6 +674,10 @@ void rproc_shutdown(struct rproc *rproc);
 int rproc_detach(struct rproc *rproc);
 int rproc_set_firmware(struct rproc *rproc, const char *fw_name);
 void rproc_report_crash(struct rproc *rproc, enum rproc_crash_type type);
+
+/* from remoteproc_coredump.c */
+void rproc_coredump_cleanup(struct rproc *rproc);
+void rproc_coredump(struct rproc *rproc);
 void rproc_coredump_using_sections(struct rproc *rproc);
 int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size);
 int rproc_coredump_add_custom_segment(struct rproc *rproc,
-- 
Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH 2/2] remoteproc: qcom: Add full coredump fallback mechanism

[Siddharth Gupta]

If a remoteproc's firmware does not support minidump but the driver
adds an ID, the minidump driver does not collect any coredumps when
the remoteproc crashes. This hinders the purpose of coredump
collection. This change adds a fallback mechanism in the event of a
crash.

Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
---
 drivers/remoteproc/qcom_common.c   | 9 +++++++--
 drivers/remoteproc/qcom_q6v5_pas.c | 1 +
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c
index 4b91e3c..1e754dd 100644
--- a/drivers/remoteproc/qcom_common.c
+++ b/drivers/remoteproc/qcom_common.c
@@ -163,12 +163,17 @@ void qcom_minidump(struct rproc *rproc, unsigned int minidump_id)
 	 */
 	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) {
+	    le32_to_cpu(subsystem->enabled) != MD_SS_ENABLED) {
+		return rproc_coredump(rproc);
+	}
+
+	if (le32_to_cpu(subsystem->encryption_status) != MD_SS_ENCR_DONE) {
 		dev_err(&rproc->dev, "Minidump not ready, skipping\n");
 		return;
 	}
 
+	rproc_coredump_cleanup(rproc);
+
 	ret = qcom_add_minidump_segments(rproc, subsystem);
 	if (ret) {
 		dev_err(&rproc->dev, "Failed with error: %d while adding minidump entries\n", ret);
diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
index b921fc2..9f29619 100644
--- a/drivers/remoteproc/qcom_q6v5_pas.c
+++ b/drivers/remoteproc/qcom_q6v5_pas.c
@@ -274,6 +274,7 @@ static const struct rproc_ops adsp_minidump_ops = {
 	.start = adsp_start,
 	.stop = adsp_stop,
 	.da_to_va = adsp_da_to_va,
+	.parse_fw = qcom_register_dump_segments,
 	.load = adsp_load,
 	.panic = adsp_panic,
 	.coredump = adsp_minidump,
-- 
Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project