From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: bjorn.andersson@linaro.org, ohad@wizery.com
Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
loic.pallardy@st.com, arnaud.pouliquen@st.com, s-anna@ti.com
Subject: [PATCH v4 5/9] remoteproc: Introducing function rproc_validate()
Date: Mon, 1 Jun 2020 11:51:35 -0600 [thread overview]
Message-ID: <20200601175139.22097-6-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <20200601175139.22097-1-mathieu.poirier@linaro.org>
Add a new function to assert the general health of the remote
processor before handing it to the remoteproc core.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
drivers/remoteproc/remoteproc_core.c | 45 ++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index c70fa0372d07..0be8343dd851 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -2060,6 +2060,47 @@ struct rproc *rproc_get_by_phandle(phandle phandle)
#endif
EXPORT_SYMBOL(rproc_get_by_phandle);
+static int rproc_validate(struct rproc *rproc)
+{
+ /*
+ * When adding a remote processor, the state of the device
+ * can be offline or detached, nothing else.
+ */
+ if (rproc->state != RPROC_OFFLINE &&
+ rproc->state != RPROC_DETACHED)
+ goto inval;
+
+ if (rproc->state == RPROC_OFFLINE) {
+ /*
+ * An offline processor without a start()
+ * function makes no sense.
+ */
+ if (!rproc->ops->start)
+ goto inval;
+ }
+
+ if (rproc->state == RPROC_DETACHED) {
+ /*
+ * A remote processor in a detached state without an
+ * attach() function makes not sense.
+ */
+ if (!rproc->ops->attach)
+ goto inval;
+ /*
+ * When attaching to a remote processor the device memory
+ * is already available and as such there is no need to have a
+ * cached table.
+ */
+ if (rproc->cached_table)
+ goto inval;
+ }
+
+ return 0;
+
+inval:
+ return -EINVAL;
+}
+
/**
* rproc_add() - register a remote processor
* @rproc: the remote processor handle to register
@@ -2089,6 +2130,10 @@ int rproc_add(struct rproc *rproc)
if (ret < 0)
return ret;
+ ret = rproc_validate(rproc);
+ if (ret < 0)
+ return ret;
+
dev_info(dev, "%s is available\n", rproc->name);
/* create debugfs entries */
--
2.20.1
next prev parent reply other threads:[~2020-06-01 17:52 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-01 17:51 [PATCH v4 0/9] remoteproc: Add support for attaching with rproc Mathieu Poirier
2020-06-01 17:51 ` [PATCH v4 1/9] remoteproc: Add new RPROC_DETACHED state Mathieu Poirier
2020-06-22 6:25 ` Bjorn Andersson
2020-06-01 17:51 ` [PATCH v4 2/9] remoteproc: Add new attach() remoteproc operation Mathieu Poirier
2020-06-22 6:36 ` Bjorn Andersson
2020-06-01 17:51 ` [PATCH v4 3/9] remoteproc: Introducing function rproc_attach() Mathieu Poirier
2020-06-22 7:07 ` Bjorn Andersson
2020-06-22 7:18 ` Bjorn Andersson
2020-06-23 19:37 ` Mathieu Poirier
2020-06-01 17:51 ` [PATCH v4 4/9] remoteproc: Introducing function rproc_actuate() Mathieu Poirier
2020-06-22 7:18 ` Bjorn Andersson
2020-06-01 17:51 ` Mathieu Poirier [this message]
2020-06-22 7:25 ` [PATCH v4 5/9] remoteproc: Introducing function rproc_validate() Bjorn Andersson
2020-06-23 19:38 ` Mathieu Poirier
2020-06-01 17:51 ` [PATCH v4 6/9] remoteproc: Refactor function rproc_boot() Mathieu Poirier
2020-06-22 7:25 ` Bjorn Andersson
2020-06-01 17:51 ` [PATCH v4 7/9] remoteproc: Refactor function rproc_trigger_auto_boot() Mathieu Poirier
2020-06-22 7:25 ` Bjorn Andersson
2020-06-01 17:51 ` [PATCH v4 8/9] remoteproc: Refactor function rproc_free_vring() Mathieu Poirier
2020-06-22 7:27 ` Bjorn Andersson
2020-06-01 17:51 ` [PATCH v4 9/9] remoteproc: Properly handle firmware name when attaching Mathieu Poirier
2020-06-04 14:16 ` Arnaud POULIQUEN
2020-06-04 20:14 ` Mathieu Poirier
2020-06-22 7:33 ` Bjorn Andersson
2020-06-23 19:48 ` Mathieu Poirier
2020-06-23 20:09 ` Bjorn Andersson
2020-06-04 14:24 ` [PATCH v4 0/9] remoteproc: Add support for attaching with rproc Arnaud POULIQUEN
2020-06-04 20:27 ` Mathieu Poirier
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