diff mbox series

[v3,01/13] remoteproc: configure IOMMU only if device address requested

Message ID 1519921440-21356-2-git-send-email-loic.pallardy@st.com
State Superseded
Headers show
Series remoteproc: add fixed memory region support | expand

Commit Message

Loic Pallardy March 1, 2018, 4:23 p.m. UTC 
If there is no IOMMU associate to remote processor device,
remoteproc_core won't be able to satisfy device address requested
in firmware resource table.
Return an error as configuration won't be coherent.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>

---
 drivers/remoteproc/remoteproc_core.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

-- 
1.9.1
diff mbox series

Patch

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 4170dfb..56b33e4 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -654,7 +654,15 @@  static int rproc_handle_carveout(struct rproc *rproc,
 	 * to use the iommu-based DMA API: we expect 'dma' to contain the
 	 * physical address in this case.
 	 */
-	if (rproc->domain) {
+
+	if (rsc->da != FW_RSC_ADDR_ANY && !rproc->domain) {
+		dev_err(dev->parent,
+			"Bad carveout rsc configuration\n");
+		ret = -ENOMEM;
+		goto dma_free;
+	}
+
+	if (rsc->da != FW_RSC_ADDR_ANY && rproc->domain) {
 		mapping = kzalloc(sizeof(*mapping), GFP_KERNEL);
 		if (!mapping) {
 			ret = -ENOMEM;