ENGR00308060-1 mcc: implementation mcc common on imx6sx

- inherited mcc ver 001.002 from vibryd mqx release.
- let lwevent related codes mqx specified.
- use the offset address to do the MQX_TO_VIRT and VIRT_TO_MQX
exchanges.
- add some modification in mcc common codes, since all the shm
access should be protected by sema4.
- double check the list head, and make the recv more robust.

Acked-by: Shawn Guo
Signed-off-by: Richard Zhu <r65037@freescale.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/include/linux/mcc_api.h b/include/linux/mcc_api.h
new file mode 100644
index 000000000000..dda45ff1d266
--- /dev/null
+++ b/include/linux/mcc_api.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2014 Freescale Semiconductor, Inc.
+ * Freescale IMX Linux-specific MCC implementation.
+ * Prototypes for MCC library API functions.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __MCC_API__
+#define __MCC_API__
+
+/*
+ * MCC return values
+ */
+#define MCC_SUCCESS         (0) /* function returned successfully */
+#define MCC_ERR_TIMEOUT     (1) /* blocking function timed out before completing */
+#define MCC_ERR_INVAL       (2) /* invalid input parameter */
+#define MCC_ERR_NOMEM       (3) /* out of shared memory for message transmission */
+#define MCC_ERR_ENDPOINT    (4) /* invalid endpoint / endpoint doesn't exist */
+#define MCC_ERR_SEMAPHORE   (5) /* semaphore handling error */
+#define MCC_ERR_DEV         (6) /* Device Open Error */
+#define MCC_ERR_INT         (7) /* Interrupt Error */
+#define MCC_ERR_SQ_FULL     (8) /* Signal queue is full */
+#define MCC_ERR_SQ_EMPTY    (9) /* Signal queue is empty */
+
+int mcc_initialize(MCC_NODE);
+int mcc_destroy(MCC_NODE);
+int mcc_create_endpoint(MCC_ENDPOINT*, MCC_PORT);
+int mcc_destroy_endpoint(MCC_ENDPOINT*);
+int mcc_send(MCC_ENDPOINT*, void*, MCC_MEM_SIZE, unsigned int);
+int mcc_recv_copy(MCC_ENDPOINT*, void*, MCC_MEM_SIZE, MCC_MEM_SIZE*, unsigned int);
+int mcc_recv_nocopy(MCC_ENDPOINT*, void**, MCC_MEM_SIZE*, unsigned int);
+int mcc_msgs_available(MCC_ENDPOINT*, unsigned int*);
+int mcc_free_buffer(void*);
+int mcc_get_info(MCC_NODE, MCC_INFO_STRUCT*);
+
+#endif /* __MCC_API__ */