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From: Vignesh Viswanathan <quic_viswanat@quicinc.com>
To: <agross@kernel.org>, <andersson@kernel.org>, <konrad.dybcio@linaro.org>,
        <lee@kernel.org>, <mathieu.poirier@linaro.org>,
        <linux-arm-msm@vger.kernel.org>, <linux-remoteproc@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>
CC: <quic_anusha@quicinc.com>, <quic_sjaganat@quicinc.com>,
        <quic_srichara@quicinc.com>, <quic_varada@quicinc.com>,
        Vignesh Viswanathan
	<quic_viswanat@quicinc.com>
Subject: [PATCH V3] remoteproc: qcom: q6v5: Get crash reason from specific SMEM partition
Date: Mon, 18 Dec 2023 11:40:42 +0530
Message-ID: <20231218061042.3015013-1-quic_viswanat@quicinc.com>
Precedence: bulk
MIME-Version: 1.0
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Content-Type: text/plain

q6v5 fatal and watchdog IRQ handlers always retrieves the crash reason
information from SMEM global partition (QCOM_SMEM_HOST_ANY).

For some targets like IPQ9574 and IPQ5332, crash reason information is
present in target specific partition due to which the crash reason is
not printed in the current implementation.

Add support to pass crash_reason_partition along with crash_reason_item
number in qcom_q6v5_init call and use the same to get the crash
information from SMEM in fatal and watchdog IRQ handlers.

Signed-off-by: Vignesh Viswanathan <quic_viswanat@quicinc.com>
---
Changes in V3: Updated commit message.
Changes in V2: Addressed comments in V1.

This patch depends on [1] which adds support for IPQ9574 and IPQ5332
remoteproc q5v5_mpd driver.

[1]: https://lore.kernel.org/all/20231110091939.3025413-1-quic_mmanikan@quicinc.com/

 drivers/remoteproc/qcom_q6v5.c      | 10 ++++++----
 drivers/remoteproc/qcom_q6v5.h      |  6 ++++--
 drivers/remoteproc/qcom_q6v5_adsp.c |  5 +++--
 drivers/remoteproc/qcom_q6v5_mpd.c  | 14 ++++++++------
 drivers/remoteproc/qcom_q6v5_mss.c  |  5 +++--
 drivers/remoteproc/qcom_q6v5_pas.c  |  3 ++-
 drivers/remoteproc/qcom_q6v5_wcss.c |  4 +++-
 7 files changed, 29 insertions(+), 18 deletions(-)

diff --git a/drivers/remoteproc/qcom_q6v5.c b/drivers/remoteproc/qcom_q6v5.c
index 0e32f13c196d..e4a28bf25130 100644
--- a/drivers/remoteproc/qcom_q6v5.c
+++ b/drivers/remoteproc/qcom_q6v5.c
@@ -100,7 +100,7 @@ static irqreturn_t q6v5_wdog_interrupt(int irq, void *data)
 		return IRQ_HANDLED;
 	}
 
-	msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, q6v5->crash_reason, &len);
+	msg = qcom_smem_get(q6v5->crash_reason_partition, q6v5->crash_reason_item, &len);
 	if (!IS_ERR(msg) && len > 0 && msg[0])
 		dev_err(q6v5->dev, "watchdog received: %s\n", msg);
 	else
@@ -121,7 +121,7 @@ irqreturn_t q6v5_fatal_interrupt(int irq, void *data)
 	if (!q6v5->running)
 		return IRQ_HANDLED;
 
-	msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, q6v5->crash_reason, &len);
+	msg = qcom_smem_get(q6v5->crash_reason_partition, q6v5->crash_reason_item, &len);
 	if (!IS_ERR(msg) && len > 0 && msg[0])
 		dev_err(q6v5->dev, "fatal error received: %s\n", msg);
 	else
@@ -279,14 +279,16 @@ EXPORT_SYMBOL_GPL(qcom_q6v5_panic);
  * 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,
+		   struct rproc *rproc, int crash_reason_partition,
+		   int crash_reason_item, 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->crash_reason_partition = crash_reason_partition;
+	q6v5->crash_reason_item = crash_reason_item;
 	q6v5->handover = handover;
 
 	init_completion(&q6v5->start_done);
diff --git a/drivers/remoteproc/qcom_q6v5.h b/drivers/remoteproc/qcom_q6v5.h
index 4e1bb1a68284..cd02372e9856 100644
--- a/drivers/remoteproc/qcom_q6v5.h
+++ b/drivers/remoteproc/qcom_q6v5.h
@@ -40,7 +40,8 @@ struct qcom_q6v5 {
 	struct completion stop_done;
 	struct completion spawn_done;
 
-	int crash_reason;
+	int crash_reason_partition;
+	int crash_reason_item;
 
 	bool running;
 
@@ -49,7 +50,8 @@ struct qcom_q6v5 {
 };
 
 int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device *pdev,
-		   struct rproc *rproc, int crash_reason, const char *load_state,
+		   struct rproc *rproc, int crash_reason_partition,
+		   int crash_reason_item, const char *load_state,
 		   void (*handover)(struct qcom_q6v5 *q6v5));
 void qcom_q6v5_deinit(struct qcom_q6v5 *q6v5);
 
diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c b/drivers/remoteproc/qcom_q6v5_adsp.c
index 6c67514cc493..8feb2eb45737 100644
--- a/drivers/remoteproc/qcom_q6v5_adsp.c
+++ b/drivers/remoteproc/qcom_q6v5_adsp.c
@@ -731,8 +731,9 @@ static int adsp_probe(struct platform_device *pdev)
 	if (ret)
 		goto disable_pm;
 
-	ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, desc->crash_reason_smem,
-			     desc->load_state, qcom_adsp_pil_handover);
+	ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, QCOM_SMEM_HOST_ANY,
+			     desc->crash_reason_smem, desc->load_state,
+			     qcom_adsp_pil_handover);
 	if (ret)
 		goto disable_pm;
 
diff --git a/drivers/remoteproc/qcom_q6v5_mpd.c b/drivers/remoteproc/qcom_q6v5_mpd.c
index b133285888c7..c893deac30e1 100644
--- a/drivers/remoteproc/qcom_q6v5_mpd.c
+++ b/drivers/remoteproc/qcom_q6v5_mpd.c
@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/of_address.h>
 #include <linux/of_device.h>
+#include <linux/of_platform.h>
 #include <linux/of_reserved_mem.h>
 #include <linux/platform_device.h>
 #include <linux/reset.h>
@@ -555,9 +556,9 @@ static int q6_get_outbound_irq(struct qcom_q6v5 *q6,
 	return 0;
 }
 
-static int init_irq(struct qcom_q6v5 *q6,
-		    struct platform_device *pdev, struct rproc *rproc,
-		    int crash_reason, const char *load_state,
+static int init_irq(struct qcom_q6v5 *q6, struct platform_device *pdev,
+		    struct rproc *rproc, int crash_reason_partition,
+		    int crash_reason_item, const char *load_state,
 		    void (*handover)(struct qcom_q6v5 *q6))
 {
 	int ret;
@@ -565,7 +566,8 @@ static int init_irq(struct qcom_q6v5 *q6,
 
 	q6->rproc = rproc;
 	q6->dev = &pdev->dev;
-	q6->crash_reason = crash_reason;
+	q6->crash_reason_partition = crash_reason_partition;
+	q6->crash_reason_item = crash_reason_item;
 	q6->handover = handover;
 
 	init_completion(&q6->start_done);
@@ -666,7 +668,7 @@ static int q6_register_userpd(struct platform_device *pdev,
 	if (ret)
 		goto free_rproc;
 
-	ret = init_irq(&wcss->q6, userpd_pdev, rproc,
+	ret = init_irq(&wcss->q6, userpd_pdev, rproc, WCSS_SMEM_HOST,
 		       WCSS_CRASH_REASON, NULL, NULL);
 	if (ret)
 		goto free_rproc;
@@ -725,7 +727,7 @@ static int q6_wcss_probe(struct platform_device *pdev)
 	if (ret)
 		goto free_rproc;
 
-	ret = qcom_q6v5_init(&wcss->q6, pdev, rproc,
+	ret = qcom_q6v5_init(&wcss->q6, pdev, rproc, WCSS_SMEM_HOST,
 			     WCSS_CRASH_REASON, NULL, NULL);
 	if (ret)
 		goto free_rproc;
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index 394b2c1cb5e2..48f115f9337b 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -26,6 +26,7 @@
 #include <linux/remoteproc.h>
 #include <linux/reset.h>
 #include <linux/soc/qcom/mdt_loader.h>
+#include <linux/soc/qcom/smem.h>
 #include <linux/iopoll.h>
 #include <linux/slab.h>
 
@@ -2093,8 +2094,8 @@ static int q6v5_probe(struct platform_device *pdev)
 	qproc->need_mem_protection = desc->need_mem_protection;
 	qproc->has_mba_logs = desc->has_mba_logs;
 
-	ret = qcom_q6v5_init(&qproc->q6v5, pdev, rproc, MPSS_CRASH_REASON_SMEM, "modem",
-			     qcom_msa_handover);
+	ret = qcom_q6v5_init(&qproc->q6v5, pdev, rproc, QCOM_SMEM_HOST_ANY,
+			     MPSS_CRASH_REASON_SMEM, "modem", qcom_msa_handover);
 	if (ret)
 		goto detach_proxy_pds;
 
diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c
index 913a5d2068e8..bfadc7bd4b51 100644
--- a/drivers/remoteproc/qcom_q6v5_pas.c
+++ b/drivers/remoteproc/qcom_q6v5_pas.c
@@ -728,7 +728,8 @@ static int adsp_probe(struct platform_device *pdev)
 		goto free_rproc;
 	adsp->proxy_pd_count = ret;
 
-	ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, desc->crash_reason_smem, desc->load_state,
+	ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, QCOM_SMEM_HOST_ANY,
+			     desc->crash_reason_smem, desc->load_state,
 			     qcom_pas_handover);
 	if (ret)
 		goto detach_proxy_pds;
diff --git a/drivers/remoteproc/qcom_q6v5_wcss.c b/drivers/remoteproc/qcom_q6v5_wcss.c
index cff1fa07d1de..29510bbefa2e 100644
--- a/drivers/remoteproc/qcom_q6v5_wcss.c
+++ b/drivers/remoteproc/qcom_q6v5_wcss.c
@@ -18,6 +18,7 @@
 #include <linux/regulator/consumer.h>
 #include <linux/reset.h>
 #include <linux/soc/qcom/mdt_loader.h>
+#include <linux/soc/qcom/smem.h>
 #include "qcom_common.h"
 #include "qcom_pil_info.h"
 #include "qcom_q6v5.h"
@@ -1047,7 +1048,8 @@ static int q6v5_wcss_probe(struct platform_device *pdev)
 	if (ret)
 		goto free_rproc;
 
-	ret = qcom_q6v5_init(&wcss->q6v5, pdev, rproc, desc->crash_reason_smem, NULL, NULL);
+	ret = qcom_q6v5_init(&wcss->q6v5, pdev, rproc, QCOM_SMEM_HOST_ANY,
+			     desc->crash_reason_smem, NULL, NULL);
 	if (ret)
 		goto free_rproc;
 
-- 
2.41.0