diff mbox series

[v6,08/11] remoteproc: stm32: Parse memory regions when attaching to M4

Message ID 20200714200445.1427257-9-mathieu.poirier@linaro.org
State Mainlined
Commit dadbdb9c304c51038465e0735585538a78e8578b
Headers show
Series remoteproc: stm32: Add support for attaching to M4 | expand

Commit Message

Mathieu Poirier July 14, 2020, 8:04 p.m. UTC
Split function stm32_rproc_parse_fw() in two parts, the first one
to parse the memory regions and the second one to load the
resource table.  That way parsing of the memory regions can be
done without having do deal with the resource table when attaching
to a remote processor.

Mainly based on the work published by Arnaud Pouliquen [1].

[1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=239877

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 drivers/remoteproc/stm32_rproc.c | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index f393f2503106..2a1cccd8d311 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -213,7 +213,7 @@  static int stm32_rproc_elf_load_rsc_table(struct rproc *rproc,
 	return 0;
 }
 
-static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
+static int stm32_rproc_parse_memory_regions(struct rproc *rproc)
 {
 	struct device *dev = rproc->dev.parent;
 	struct device_node *np = dev->of_node;
@@ -266,6 +266,16 @@  static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
 		index++;
 	}
 
+	return 0;
+}
+
+static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
+{
+	int ret = stm32_rproc_parse_memory_regions(rproc);
+
+	if (ret)
+		return ret;
+
 	return stm32_rproc_elf_load_rsc_table(rproc, fw);
 }
 
@@ -692,15 +702,20 @@  static int stm32_rproc_probe(struct platform_device *pdev)
 	if (ret)
 		goto free_rproc;
 
-	if (state == M4_STATE_CRUN)
+	if (state == M4_STATE_CRUN) {
 		rproc->state = RPROC_DETACHED;
 
+		ret = stm32_rproc_parse_memory_regions(rproc);
+		if (ret)
+			goto free_resources;
+	}
+
 	rproc->has_iommu = false;
 	ddata->workqueue = create_workqueue(dev_name(dev));
 	if (!ddata->workqueue) {
 		dev_err(dev, "cannot create workqueue\n");
 		ret = -ENOMEM;
-		goto free_rproc;
+		goto free_resources;
 	}
 
 	platform_set_drvdata(pdev, rproc);
@@ -719,6 +734,8 @@  static int stm32_rproc_probe(struct platform_device *pdev)
 	stm32_rproc_free_mbox(rproc);
 free_wkq:
 	destroy_workqueue(ddata->workqueue);
+free_resources:
+	rproc_resource_cleanup(rproc);
 free_rproc:
 	if (device_may_wakeup(dev)) {
 		dev_pm_clear_wake_irq(dev);