In current version rproc_handle_carveout() function registers carveout
for allocation.
This patch extends rproc_handle_carveout() function to support
pre-registered region. Match is done on region name, then requested
device address and length are checked.
If match found, pre-registered region is associated with resource
table request.
If no name match found, new carveout is registered for allocation.
Signed-off-by: Loic Pallardy <loic.pallardy@xxxxxx>
---
drivers/remoteproc/remoteproc_core.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 5dd5edf..c543d04 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -840,6 +840,29 @@ static int rproc_handle_carveout(struct rproc *rproc,
dev_dbg(dev, "carveout rsc: name: %s, da 0x%x, pa 0x%x, len 0x%x, flags 0x%x\n",
rsc->name, rsc->da, rsc->pa, rsc->len, rsc->flags);
+ /*
+ * Check carveout rsc already part of a registered carveout,
+ * Search by name, then check the da and length
+ */
+ carveout = rproc_find_carveout_by_name(rproc, rsc->name);
+
+ if (carveout) {
+ if (carveout->rsc_offset != FW_RSC_ADDR_ANY) {
+ dev_err(dev,
+ "Carveout already associated to resource table\n");
+ return -ENOMEM;
+ }
+
+ if (rproc_check_carveout_da(rproc, carveout, rsc->da, rsc->len))
+ return -ENOMEM;
+
+ /* Update memory carveout with resource table info */
+ carveout->rsc_offset = offset;
+ carveout->flags = rsc->flags;
+
+ return 0;
+ }
+
/* Register carveout in in list */
carveout = rproc_mem_entry_init(dev, 0, 0, rsc->len, rsc->da,
rproc_alloc_carveout,
@@ -1120,8 +1143,15 @@ static int rproc_alloc_registered_carveouts(struct rproc *rproc)
* In this case, the device address and the physical address
* are the same.
*/
+
+ /* Use va if defined else dma to generate pa */
if (entry->va)
rsc->pa = (u32)rproc_va_to_pa(entry->va);
+ else
+ rsc->pa = (u32)entry->dma;
+
+ rsc->da = entry->da;
+ rsc->len = entry->len;
}
}
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-remoteproc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
