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Commit eb30596e authored by Loic Pallardy's avatar Loic Pallardy Committed by Bjorn Andersson
Browse files

remoteproc: add rproc_va_to_pa function 



This new function translates CPU virtual address in
CPU physical one according to virtual address location.

Signed-off-by: default avatarLoic Pallardy <loic.pallardy@st.com>
Acked-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
parent 3bc8140b

drivers/remoteproc/remoteproc_core.c

+17 −1
Original line number Diff line number Diff line
@@ -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;