lkml.org 
[lkml]   [2021]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v5 09/19] remoteproc: stm32: Move memory parsing to rproc_ops
Date
From: Arnaud POULIQUEN <arnaud.pouliquen@foss.st.com>

Some actions such as memory resources reallocation are needed when
trying to reattach a co-processor. Use the prepare() operation for
these actions.

Co-developed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Arnaud POULIQUEN <arnaud.pouliquen@foss.st.com>
---
drivers/remoteproc/remoteproc_core.c | 14 ++++++++++++--
drivers/remoteproc/stm32_rproc.c | 27 ++++++---------------------
2 files changed, 18 insertions(+), 23 deletions(-)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 741bc20de437..5c52c612a7f0 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1585,10 +1585,17 @@ static int rproc_attach(struct rproc *rproc)
return ret;
}

+ /* Do anything that is needed to boot the remote processor */
+ ret = rproc_prepare_device(rproc);
+ if (ret) {
+ dev_err(dev, "can't prepare rproc %s: %d\n", rproc->name, ret);
+ goto disable_iommu;
+ }
+
ret = rproc_set_loaded_rsc_table(rproc);
if (ret) {
dev_err(dev, "can't load resource table: %d\n", ret);
- goto disable_iommu;
+ goto unprepare_device;
}

/* reset max_notifyid */
@@ -1605,7 +1612,7 @@ static int rproc_attach(struct rproc *rproc)
ret = rproc_handle_resources(rproc, rproc_loading_handlers);
if (ret) {
dev_err(dev, "Failed to process resources: %d\n", ret);
- goto disable_iommu;
+ goto unprepare_device;
}

/* Allocate carveout resources associated to rproc */
@@ -1624,6 +1631,9 @@ static int rproc_attach(struct rproc *rproc)

clean_up_resources:
rproc_resource_cleanup(rproc);
+unprepare_device:
+ /* release HW resources if needed */
+ rproc_unprepare_device(rproc);
disable_iommu:
rproc_disable_iommu(rproc);
return ret;
diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index 826cb7a045df..6f0bb54dec15 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -207,16 +207,7 @@ static int stm32_rproc_mbox_idx(struct rproc *rproc, const unsigned char *name)
return -EINVAL;
}

-static int stm32_rproc_elf_load_rsc_table(struct rproc *rproc,
- const struct firmware *fw)
-{
- if (rproc_elf_load_rsc_table(rproc, fw))
- dev_warn(&rproc->dev, "no resource table found for this firmware\n");
-
- return 0;
-}
-
-static int stm32_rproc_parse_memory_regions(struct rproc *rproc)
+static int stm32_rproc_prepare(struct rproc *rproc)
{
struct device *dev = rproc->dev.parent;
struct device_node *np = dev->of_node;
@@ -274,12 +265,10 @@ static int stm32_rproc_parse_memory_regions(struct rproc *rproc)

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;
+ if (rproc_elf_load_rsc_table(rproc, fw))
+ dev_warn(&rproc->dev, "no resource table found for this firmware\n");

- return stm32_rproc_elf_load_rsc_table(rproc, fw);
+ return 0;
}

static irqreturn_t stm32_rproc_wdg(int irq, void *data)
@@ -609,6 +598,7 @@ stm32_rproc_get_loaded_rsc_table(struct rproc *rproc, size_t *table_sz)
}

static const struct rproc_ops st_rproc_ops = {
+ .prepare = stm32_rproc_prepare,
.start = stm32_rproc_start,
.stop = stm32_rproc_stop,
.attach = stm32_rproc_attach,
@@ -793,14 +783,9 @@ 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) {
--
2.25.1
\
 
 \ /
  Last update: 2021-02-12 00:53    [W:2.254 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site