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Diffstat (limited to 'drivers/firmware/qcom/qcom_scm.c')
-rw-r--r--drivers/firmware/qcom/qcom_scm.c37
1 files changed, 6 insertions, 31 deletions
diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
index 520de9b563..90283f160a 100644
--- a/drivers/firmware/qcom/qcom_scm.c
+++ b/drivers/firmware/qcom/qcom_scm.c
@@ -1576,9 +1576,9 @@ EXPORT_SYMBOL_GPL(qcom_scm_qseecom_app_get_id);
/**
* qcom_scm_qseecom_app_send() - Send to and receive data from a given QSEE app.
* @app_id: The ID of the target app.
- * @req: Request buffer sent to the app (must be DMA-mappable).
+ * @req: DMA address of the request buffer sent to the app.
* @req_size: Size of the request buffer.
- * @rsp: Response buffer, written to by the app (must be DMA-mappable).
+ * @rsp: DMA address of the response buffer, written to by the app.
* @rsp_size: Size of the response buffer.
*
* Sends a request to the QSEE app associated with the given ID and read back
@@ -1589,33 +1589,13 @@ EXPORT_SYMBOL_GPL(qcom_scm_qseecom_app_get_id);
*
* Return: Zero on success, nonzero on failure.
*/
-int qcom_scm_qseecom_app_send(u32 app_id, void *req, size_t req_size, void *rsp,
- size_t rsp_size)
+int qcom_scm_qseecom_app_send(u32 app_id, dma_addr_t req, size_t req_size,
+ dma_addr_t rsp, size_t rsp_size)
{
struct qcom_scm_qseecom_resp res = {};
struct qcom_scm_desc desc = {};
- dma_addr_t req_phys;
- dma_addr_t rsp_phys;
int status;
- /* Map request buffer */
- req_phys = dma_map_single(__scm->dev, req, req_size, DMA_TO_DEVICE);
- status = dma_mapping_error(__scm->dev, req_phys);
- if (status) {
- dev_err(__scm->dev, "qseecom: failed to map request buffer\n");
- return status;
- }
-
- /* Map response buffer */
- rsp_phys = dma_map_single(__scm->dev, rsp, rsp_size, DMA_FROM_DEVICE);
- status = dma_mapping_error(__scm->dev, rsp_phys);
- if (status) {
- dma_unmap_single(__scm->dev, req_phys, req_size, DMA_TO_DEVICE);
- dev_err(__scm->dev, "qseecom: failed to map response buffer\n");
- return status;
- }
-
- /* Set up SCM call data */
desc.owner = QSEECOM_TZ_OWNER_TZ_APPS;
desc.svc = QSEECOM_TZ_SVC_APP_ID_PLACEHOLDER;
desc.cmd = QSEECOM_TZ_CMD_APP_SEND;
@@ -1623,18 +1603,13 @@ int qcom_scm_qseecom_app_send(u32 app_id, void *req, size_t req_size, void *rsp,
QCOM_SCM_RW, QCOM_SCM_VAL,
QCOM_SCM_RW, QCOM_SCM_VAL);
desc.args[0] = app_id;
- desc.args[1] = req_phys;
+ desc.args[1] = req;
desc.args[2] = req_size;
- desc.args[3] = rsp_phys;
+ desc.args[3] = rsp;
desc.args[4] = rsp_size;
- /* Perform call */
status = qcom_scm_qseecom_call(&desc, &res);
- /* Unmap buffers */
- dma_unmap_single(__scm->dev, rsp_phys, rsp_size, DMA_FROM_DEVICE);
- dma_unmap_single(__scm->dev, req_phys, req_size, DMA_TO_DEVICE);
-
if (status)
return status;