Changeset 9991c47 in mainline for uspace/lib/drv/generic/remote_hw_res.c

Timestamp:

2011-11-13T22:18:58Z (12 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

8a5962f

Parents:

e6def65

Message:

libc, libdrv: Add support for DMA channel handling.

File:

• uspace/lib/drv/generic/remote_hw_res.c (modified) (2 diffs)

uspace/lib/drv/generic/remote_hw_res.c

@@ -43 +43 @@
 static void remote_hw_res_enable_interrupt(ddf_fun_t *, void *, ipc_callid_t,
     ipc_call_t *);
+static void remote_hw_res_dma_channel_setup(ddf_fun_t *, void *, ipc_callid_t,
+    ipc_call_t *);
 
 static remote_iface_func_ptr_t remote_hw_res_iface_ops [] = {
-        &remote_hw_res_get_resource_list,
-        &remote_hw_res_enable_interrupt
+        [HW_RES_GET_RESOURCE_LIST] = &remote_hw_res_get_resource_list,
+        [HW_RES_ENABLE_INTERRUPT] = &remote_hw_res_enable_interrupt,
+        [HW_RES_DMA_CHANNEL_SETUP] = &remote_hw_res_dma_channel_setup,
 };
 
@@ -94 +97 @@
 }
 
+static void remote_hw_res_dma_channel_setup(ddf_fun_t *fun, void *ops,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+        hw_res_ops_t *hw_res_ops = ops;
+
+        if (hw_res_ops->dma_channel_setup == NULL) {
+                async_answer_0(callid, ENOTSUP);
+                return;
+        }
+        const unsigned channel = DEV_IPC_GET_ARG1(*call);
+        const uint32_t address = DEV_IPC_GET_ARG2(*call);
+        const uint16_t size = DEV_IPC_GET_ARG3(*call) & 0xffff;
+        const uint8_t mode = DEV_IPC_GET_ARG3(*call) >> 16;
+
+        const int ret = hw_res_ops->dma_channel_setup(
+            channel, address, size, mode);
+        async_answer_0(callid, ret);
+}
+
 /**
  * @}