API: Improve glue mid-layer of the API demo application.
- Extend ub_dev_read() and ub_dev_recv() so they return the length actually
read, which allows for better control and error handling (this introduces
additional error code API_ESYSC returned by the glue mid-layer).
- Clean up definitions naming and usage.
- Other minor cosmetics.
Note these changes do not touch the API proper, so the interface between
U-Boot and standalone applications remains unchanged.
Signed-off-by: Rafal Jaworowski <raj@semihalf.com>
diff --git a/api_examples/glue.h b/api_examples/glue.h
index 0adb8b3..6bf47d0 100644
--- a/api_examples/glue.h
+++ b/api_examples/glue.h
@@ -32,6 +32,9 @@
#define API_SEARCH_LEN (3 * 1024 * 1024) /* 3MB search range */
+#define UB_MAX_MR 5 /* max mem regions number */
+#define UB_MAX_DEV 6 /* max devices number */
+
extern void *syscall_ptr;
extern uint32_t search_hint;
@@ -39,9 +42,10 @@
int api_search_sig(struct api_signature **sig);
/*
- * ub_ library calls are part of the application, not U-Boot code! They are
- * front-end wrappers that are used by the consumer application: they prepare
- * arguments for particular syscall and jump to the low level syscall()
+ * The ub_ library calls are part of the application, not U-Boot code! They
+ * are front-end wrappers that are used by the consumer application: they
+ * prepare arguments for particular syscall and jump to the low level
+ * syscall()
*/
/* console */
@@ -67,10 +71,10 @@
int ub_dev_enum(void);
int ub_dev_open(int handle);
int ub_dev_close(int handle);
-int ub_dev_read(int handle, void *buf,
- lbasize_t len, lbastart_t start);
+int ub_dev_read(int handle, void *buf, lbasize_t len,
+ lbastart_t start, lbasize_t *rlen);
int ub_dev_send(int handle, void *buf, int len);
-int ub_dev_recv(int handle, void *buf, int len);
+int ub_dev_recv(int handle, void *buf, int len, int *rlen);
struct device_info * ub_dev_get(int);
#endif /* _API_GLUE_H_ */