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authorOhad Ben-Cohen <ohad@wizery.com>2012-07-01 11:30:57 +0300
committerOhad Ben-Cohen <ohad@wizery.com>2012-07-06 00:53:26 +0300
commit0e49b72c8c91f9ea65ae62ca3061f885aa06a6f6 (patch)
tree39ca2c7f4bfcac50cae1831d7f158e3349e3d27f /drivers
parentc6b5a27628faf6657b741d828a1462d832d0dbc5 (diff)
downloadlinux-0e49b72c8c91f9ea65ae62ca3061f885aa06a6f6.tar.bz2
remoteproc: support non-iommu carveout assignment
Publish carveout addresses on non-iommu setups too. Reported-and-acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/remoteproc/remoteproc_core.c34
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 4a77dc1df3d8..c85db123ba0a 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -713,23 +713,27 @@ static int rproc_handle_carveout(struct rproc *rproc,
list_add_tail(&mapping->node, &rproc->mappings);
dev_dbg(dev, "carveout mapped 0x%x to 0x%x\n", rsc->da, dma);
-
- /*
- * Some remote processors might need to know the pa
- * even though they are behind an IOMMU. E.g., OMAP4's
- * remote M3 processor needs this so it can control
- * on-chip hardware accelerators that are not behind
- * the IOMMU, and therefor must know the pa.
- *
- * Generally we don't want to expose physical addresses
- * if we don't have to (remote processors are generally
- * _not_ trusted), so we might want to do this only for
- * remote processor that _must_ have this (e.g. OMAP4's
- * dual M3 subsystem).
- */
- rsc->pa = dma;
}
+ /*
+ * Some remote processors might need to know the pa
+ * even though they are behind an IOMMU. E.g., OMAP4's
+ * remote M3 processor needs this so it can control
+ * on-chip hardware accelerators that are not behind
+ * the IOMMU, and therefor must know the pa.
+ *
+ * Generally we don't want to expose physical addresses
+ * if we don't have to (remote processors are generally
+ * _not_ trusted), so we might want to do this only for
+ * remote processor that _must_ have this (e.g. OMAP4's
+ * dual M3 subsystem).
+ *
+ * Non-IOMMU processors might also want to have this info.
+ * In this case, the device address and the physical address
+ * are the same.
+ */
+ rsc->pa = dma;
+
carveout->va = va;
carveout->len = rsc->len;
carveout->dma = dma;