Added device driver's IPC.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2098 bbd45198-f89e-11dd-88c7-29a3b14d5316

1 files changed, 38 insertions, 0 deletions

diff --git a/components/drivers/include/rtdevice.h b/components/drivers/include/rtdevice.h
index 583c9afe07..32329578e3 100644
--- a/components/drivers/include/rtdevice.h
+++ b/components/drivers/include/rtdevice.h
@@ -5,6 +5,44 @@
 
 #define RT_DEVICE(device)	((rt_device_t)device)
 
+/* completion flag */
+struct rt_completion
+{
+	rt_uint32_t flag;
+
+	/* suspended list */
+	rt_list_t suspended_list;
+};
+
+/* ring buffer */
+struct rt_ringbuffer
+{
+	rt_uint16_t read_index, write_index;
+	rt_uint8_t *buffer_ptr;
+	rt_uint16_t buffer_size;
+};
+
+/**
+ * Completion
+ */
+void rt_completion_init(struct rt_completion* completion);
+rt_err_t rt_completion_wait(struct rt_completion* completion, rt_int32_t timeout);
+void rt_completion_done(struct rt_completion* completion);
+
+/**
+ * DataLink for DeviceDriver
+ */
+
+/**
+ * RingBuffer for DeviceDriver
+ */
+void rt_ringbuffer_init(struct rt_ringbuffer* rb, rt_uint8_t *pool, rt_uint16_t size);
+rt_size_t rt_ringbuffer_put(struct rt_ringbuffer* rb, const rt_uint8_t *ptr, rt_uint16_t length);
+rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer* rb, const rt_uint8_t ch);
+rt_size_t rt_ringbuffer_get(struct rt_ringbuffer* rb, rt_uint8_t *ptr, rt_uint16_t length);
+rt_size_t rt_ringbuffer_available_size(struct rt_ringbuffer* rb);
+rt_size_t rt_ringbuffer_emptry_size(struct rt_ringbuffer* rb);
+
 #ifdef RT_USING_SPI
 #include "drivers/spi.h"
 #endif