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Subject[PATCH v2 01/16] remoteproc: add rproc_va_to_pa function
Date
This new function translates CPU virtual address in
CPU physical one according to virtual address location.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
---
drivers/remoteproc/remoteproc_core.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index eab14b4..faa18a7 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -139,6 +139,17 @@ static void rproc_disable_iommu(struct rproc *rproc)
iommu_domain_free(domain);
}

+static phys_addr_t rproc_va_to_pa(void *cpu_addr)
+{
+ if (is_vmalloc_addr(cpu_addr)) {
+ return page_to_phys(vmalloc_to_page(cpu_addr)) +
+ offset_in_page(cpu_addr);
+ }
+
+ WARN_ON(!virt_addr_valid(cpu_addr));
+ return virt_to_phys(cpu_addr);
+}
+
/**
* rproc_da_to_va() - lookup the kernel virtual address for a remoteproc address
* @rproc: handle of a remote processor
@@ -700,7 +711,7 @@ static int rproc_handle_carveout(struct rproc *rproc,
* In this case, the device address and the physical address
* are the same.
*/
- rsc->pa = dma;
+ rsc->pa = (u32)rproc_va_to_pa(va);

carveout->va = va;
carveout->len = rsc->len;
--
1.9.1
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