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authorLoic Pallardy <loic.pallardy@st.com>2018-07-27 15:14:38 +0200
committerBjorn Andersson <bjorn.andersson@linaro.org>2018-10-09 22:39:04 -0700
commitf2e74abfaad446765ce0350aed1d9c5eed5b1b36 (patch)
treead2758e4a3380d2fc62aa16cf9524fd039e168f7 /drivers/remoteproc
parenteb30596eae947ce9072507a3ca112a9dd4601d85 (diff)
downloadlinux-f2e74abfaad446765ce0350aed1d9c5eed5b1b36.tar.bz2
remoteproc: add release ops in rproc_mem_entry struct
Memory entry could be allocated in different ways (ioremap, dma_alloc_coherent, internal RAM allocator...). This patch introduces a release ops in rproc_mem_entry structure to associate dedicated release mechanism to each memory entry descriptor in order to keep remoteproc core generic. Signed-off-by: Loic Pallardy <loic.pallardy@st.com> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc')
-rw-r--r--drivers/remoteproc/remoteproc_core.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index ebadaad070a5..674f88d237b8 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -600,6 +600,24 @@ out:
}
/**
+ * rproc_release_carveout() - release acquired carveout
+ * @rproc: rproc handle
+ * @mem: the memory entry to release
+ *
+ * This function releases specified memory entry @mem allocated via
+ * dma_alloc_coherent() function by @rproc.
+ */
+static int rproc_release_carveout(struct rproc *rproc,
+ struct rproc_mem_entry *mem)
+{
+ struct device *dev = &rproc->dev;
+
+ /* clean up carveout allocations */
+ dma_free_coherent(dev->parent, mem->len, mem->va, mem->dma);
+ return 0;
+}
+
+/**
* rproc_handle_carveout() - handle phys contig memory allocation requests
* @rproc: rproc handle
* @rsc: the resource entry
@@ -733,6 +751,7 @@ static int rproc_handle_carveout(struct rproc *rproc,
carveout->len = rsc->len;
carveout->dma = dma;
carveout->da = rsc->da;
+ carveout->release = rproc_release_carveout;
list_add_tail(&carveout->node, &rproc->carveouts);
@@ -920,8 +939,8 @@ static void rproc_resource_cleanup(struct rproc *rproc)
/* clean up carveout allocations */
list_for_each_entry_safe(entry, tmp, &rproc->carveouts, node) {
- dma_free_coherent(dev->parent, entry->len, entry->va,
- entry->dma);
+ if (entry->release)
+ entry->release(rproc, entry);
list_del(&entry->node);
kfree(entry);
}