From dadbdb9c304c51038465e0735585538a78e8578b Mon Sep 17 00:00:00 2001 From: Mathieu Poirier Date: Tue, 14 Jul 2020 14:04:42 -0600 Subject: remoteproc: stm32: Parse memory regions when attaching to M4 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 Signed-off-by: Mathieu Poirier Link: https://lore.kernel.org/r/20200714200445.1427257-9-mathieu.poirier@linaro.org Signed-off-by: Bjorn Andersson --- drivers/remoteproc/stm32_rproc.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) 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 @@ 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); -- cgit v1.2.3