This patch introduces keystone_rproc_parse_fw() to declare a
carveout region based on reserved memory for vdev buffer
allocation, if a memory region has been declared on rproc DT node.
Signed-off-by: Loic Pallardy <loic.pallardy@xxxxxx>
---
drivers/remoteproc/keystone_remoteproc.c | 53 +++++++++++++++++++++++++++++---
1 file changed, 49 insertions(+), 4 deletions(-)
diff --git a/drivers/remoteproc/keystone_remoteproc.c b/drivers/remoteproc/keystone_remoteproc.c
index aaac311..ef542f2 100644
--- a/drivers/remoteproc/keystone_remoteproc.c
+++ b/drivers/remoteproc/keystone_remoteproc.c
@@ -293,11 +293,56 @@ static void *keystone_rproc_da_to_va(struct rproc *rproc, u64 da, int len)
return (__force void *)va;
}
+/*
+ * Custom function to register platform specific memory region(s)
+ * before loading firmware resource table thanks to generic
+ * rproc_elf_load_rsc_table() function.
+ */
+static int keystone_rproc_parse_fw(struct rproc *rproc,
+ const struct firmware *fw)
+{
+ struct device *dev = rproc->dev.parent;
+ struct rproc_mem_entry *mem;
+ struct device_node *node;
+ struct resource res;
+ int err;
+
+ node = of_parse_phandle(dev->of_node, "memory-region", 0);
+ if (!node) {
+ dev_warn(dev, "No memory-region specified\n");
+ goto out;
+ }
+
+ err = of_address_to_resource(node, 0, &res);
+ if (err) {
+ dev_err(dev, "Bad memory-region definition\n");
+ return err;
+ }
+
+ /* Register memory region for vdev buffer allocation */
+ mem = rproc_of_resm_mem_entry_init(dev, 0, resource_size(&res),
+ res.start, "vdev0buffer");
+
+ if (!mem)
+ return -ENOMEM;
+
+ rproc_add_carveout(rproc, mem);
+
+out:
+ return rproc_elf_load_rsc_table(rproc, fw);
+}
+
static const struct rproc_ops keystone_rproc_ops = {
- .start = keystone_rproc_start,
- .stop = keystone_rproc_stop,
- .kick = keystone_rproc_kick,
- .da_to_va = keystone_rproc_da_to_va,
+ .start = keystone_rproc_start,
+ .stop = keystone_rproc_stop,
+ .kick = keystone_rproc_kick,
+ .da_to_va = keystone_rproc_da_to_va,
+ .parse_fw = keystone_rproc_parse_fw,
+ .load = rproc_elf_load_segments,
+ .find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
+ .sanity_check = rproc_elf_sanity_check,
+ .get_boot_addr = rproc_elf_get_boot_addr,
+
};
static int keystone_rproc_of_get_memories(struct platform_device *pdev,
--
1.9.1
--
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