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remoteproc: stm32: Parse memory regions when attaching to M4

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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

Acked-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200714200445.1427257-9-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Mathieu Poirier 2020-07-14 14:04:42 -06:00 committed by Bjorn Andersson
parent d9473cbfb0
commit dadbdb9c30
1 changed files with 20 additions and 3 deletions
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23
drivers/remoteproc/stm32_rproc.c
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@ -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 @@ free_mb:
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);