From: Sibi Sankar <sibis@codeaurora.org>
To: bjorn.andersson@linaro.org, ohad@wizery.com
Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org, tsoni@codeaurora.org,
sricharan@codeaurora.org, akdwived@codeaurora.org,
kyan@codeaurora.org, Sibi Sankar <sibis@codeaurora.org>
Subject: [PATCH v4 4/5] remoteproc: qcom: q6v5-mss: Add custom dump function for modem
Date: Tue, 9 Oct 2018 21:53:38 +0530 [thread overview]
Message-ID: <20181009162339.30522-5-sibis@codeaurora.org> (raw)
In-Reply-To: <20181009162339.30522-1-sibis@codeaurora.org>
The per segment dump function is responsible for loading the mba
before device memory segments associated with coredump can be populated
and for cleaning up the resources post coredump.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
drivers/remoteproc/qcom_q6v5_mss.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index c475af65ba1d..85db95bfd355 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -182,6 +182,7 @@ struct q6v5 {
struct qcom_sysmon *sysmon;
bool need_mem_protection;
bool has_alt_reset;
+ unsigned long dump_segment_cnt;
int mpss_perm;
int mba_perm;
int version;
@@ -932,6 +933,30 @@ static int q6v5_mpss_load(struct q6v5 *qproc)
return ret < 0 ? ret : 0;
}
+static void qcom_q6v5_dump_segment(struct rproc *rproc,
+ struct rproc_dump_segment *segment,
+ void *dest)
+{
+ int ret = 0;
+ struct q6v5 *qproc = rproc->priv;
+ unsigned long dump_cnt = (unsigned long)segment->priv;
+ void *ptr = rproc_da_to_va(rproc, segment->da, segment->size);
+
+ /* Unlock mba before copying segments */
+ if (!dump_cnt)
+ ret = q6v5_mba_load(qproc);
+
+ if (!ptr || ret)
+ memset(dest, 0xff, segment->size);
+ else
+ memcpy(dest, ptr, segment->size);
+
+ dump_cnt++;
+ /* Reclaim mba after copying segments */
+ if (dump_cnt == qproc->dump_segment_cnt)
+ q6v5_mba_reclaim(qproc);
+}
+
static int q6v5_start(struct rproc *rproc)
{
struct q6v5 *qproc = (struct q6v5 *)rproc->priv;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2018-10-09 16:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-09 16:23 [PATCH v4 0/5] Add coredump support for Q6v5 Modem remoteproc Sibi Sankar
2018-10-09 16:23 ` [PATCH v4 1/5] remoteproc: Introduce custom dump function for each remoteproc segment Sibi Sankar
2018-10-09 16:23 ` [PATCH v4 2/5] remoteproc: Add mechanism for custom dump function assignment Sibi Sankar
2018-10-09 16:23 ` [PATCH v4 3/5] remoteproc: qcom: q6v5-mss: Refactor mba load/unload sequence Sibi Sankar
2018-10-09 16:23 ` Sibi Sankar [this message]
2018-10-09 16:23 ` [PATCH v4 5/5] remoteproc: qcom: q6v5-mss: Register segments/dumpfn for coredump Sibi Sankar
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