This new function translates CPU virtual address in
CPU physical one according to virtual address location.
Signed-off-by: Loic Pallardy <loic.pallardy@xxxxxx>
Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
drivers/remoteproc/remoteproc_core.c | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 437fabf..8e5fe1e 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -140,6 +140,22 @@ static void rproc_disable_iommu(struct rproc *rproc)
iommu_domain_free(domain);
}
+static phys_addr_t rproc_va_to_pa(void *cpu_addr)
+{
+ /*
+ * Return physical address according to virtual address location
+ * - in vmalloc: if region ioremapped or defined as dma_alloc_coherent
+ * - in kernel: if region allocated in generic dma memory pool
+ */
+ 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
@@ -711,7 +727,7 @@ 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
--
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
