1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/sipc/sbuf.h b/drivers/sipc/sbuf.h
new file mode 100644
index 00000000..cb14a783
--- /dev/null
+++ b/drivers/sipc/sbuf.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2012 Spreadtrum Communications Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that 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.
+ */
+
+#ifndef __SBUF_H
+#define __SBUF_H
+
+/* flag for CMD/DONE msg type */
+#define SMSG_CMD_SBUF_INIT	0x0001
+#define SMSG_DONE_SBUF_INIT	0x0002
+
+/* flag for EVENT msg type */
+#define SMSG_EVENT_SBUF_WRPTR	0x0001
+#define SMSG_EVENT_SBUF_RDPTR	0x0002
+
+/* ring buf header */
+struct sbuf_ring_header {
+	/* send-buffer info */
+	uint32_t		txbuf_addr;
+	uint32_t		txbuf_size;
+	uint32_t		txbuf_rdptr;
+	uint32_t		txbuf_wrptr;
+
+	/* recv-buffer info */
+	uint32_t		rxbuf_addr;
+	uint32_t		rxbuf_size;
+	uint32_t		rxbuf_rdptr;
+	uint32_t		rxbuf_wrptr;
+};
+
+/* sbuf_mem is the structure of smem for rings */
+struct sbuf_smem_header {
+	uint32_t		ringnr;
+
+	struct sbuf_ring_header	headers[0];
+};
+
+struct sbuf_ring {
+	/* tx/rx buffer info */
+	volatile struct sbuf_ring_header	*header;
+
+	void			*txbuf_virt;
+	void			*rxbuf_virt;
+
+	/* send/recv wait queue */
+	wait_queue_head_t	txwait;
+	wait_queue_head_t	rxwait;
+
+	/* send/recv mutex */
+	struct mutex		txlock;
+	struct mutex		rxlock;
+
+	void			(*handler)(int event, void *data);
+	void			*data;
+};
+
+#define SBUF_STATE_IDLE		0
+#define SBUF_STATE_READY	1
+
+struct sbuf_mgr {
+	uint8_t			dst;
+	uint8_t			channel;
+	uint32_t		state;
+
+	void			*smem_virt;
+	uint32_t		smem_addr;
+	uint32_t		smem_size;
+	uint32_t		ringnr;
+	struct sbuf_ring	*rings;
+	struct task_struct	*thread;
+};
+
+#endif