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From: Sibi Sankar <sibis@codeaurora.org>
To: bjorn.andersson@linaro.org, mathieu.poirier@linaro.org,
	jeffrey.l.hugo@gmail.com, luca@z3ntu.xyz
Cc: agross@kernel.org, ohad@wizery.com,
	linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org,
	linux-kernel@vger.kernel.org, Sibi Sankar <sibis@codeaurora.org>,
	stable@vger.kernel.org
Subject: [PATCH v4 3/3] remoteproc: qcom_q6v5_mss: Reload the mba region on coredump
Date: Thu,  5 Mar 2020 01:17:29 +0530
Message-ID: <20200304194729.27979-4-sibis@codeaurora.org> (raw)
In-Reply-To: <20200304194729.27979-1-sibis@codeaurora.org>

On secure devices after a wdog/fatal interrupt, the mba region has to be
refreshed in order to prevent the following errors during mba load.

Err Logs:
remoteproc remoteproc2: stopped remote processor 4080000.remoteproc
qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284031232
qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284031232
....
qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284031232
qcom-q6v5-mss 4080000.remoteproc: MBA booted, loading mpss

Fixes: 7dd8ade24dc2a ("remoteproc: qcom: q6v5-mss: Add custom dump function for modem")
Cc: stable@vger.kernel.org
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
 drivers/remoteproc/qcom_q6v5_mss.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index b8a922181de8a..d7667418a62f4 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -1042,6 +1042,23 @@ static void q6v5_mba_reclaim(struct q6v5 *qproc)
 	}
 }
 
+static int q6v5_reload_mba(struct rproc *rproc)
+{
+	struct q6v5 *qproc = rproc->priv;
+	const struct firmware *fw;
+	int ret;
+
+	ret = request_firmware(&fw, rproc->firmware, qproc->dev);
+	if (ret < 0)
+		return ret;
+
+	q6v5_load(rproc, fw);
+	ret = q6v5_mba_load(qproc);
+	release_firmware(fw);
+
+	return ret;
+}
+
 static int q6v5_mpss_load(struct q6v5 *qproc)
 {
 	const struct elf32_phdr *phdrs;
@@ -1221,7 +1238,7 @@ static void qcom_q6v5_dump_segment(struct rproc *rproc,
 
 	/* Unlock mba before copying segments */
 	if (!qproc->dump_mba_loaded) {
-		ret = q6v5_mba_load(qproc);
+		ret = q6v5_reload_mba(rproc);
 		if (!ret) {
 			/* Reset ownership back to Linux to copy segments */
 			ret = q6v5_xfer_mem_ownership(qproc, &qproc->mpss_perm,
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

      parent reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-04 19:47 [PATCH v4 0/3] remoteproc: mss: Improve mem_assign and firmware load Sibi Sankar
2020-03-04 19:47 ` [PATCH v4 1/3] remoteproc: qcom_q6v5_mss: Don't reassign mpss region on shutdown Sibi Sankar
2020-03-04 19:47 ` [PATCH v4 2/3] remoteproc: qcom_q6v5_mss: Validate each segment during loading Sibi Sankar
2020-03-04 19:47 ` Sibi Sankar [this message]

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