1 files changed, 88 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/include/mach/mbox-db5500.h b/arch/arm/mach-ux500/include/mach/mbox-db5500.h
new file mode 100644
index 000000000000..7f9da4d2fbda
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/mbox-db5500.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ * Author: Stefan Nilsson <stefan.xk.nilsson@stericsson.com> for ST-Ericsson.
+ * Author: Martin Persson <martin.persson@stericsson.com> for ST-Ericsson.
+ * License terms: GNU General Public License (GPL), version 2.
+ */
+#ifndef __INC_STE_MBOX_H
+#define __INC_STE_MBOX_H
+#define MBOX_BUF_SIZE 16
+#define MBOX_NAME_SIZE 8
+/**
+  * mbox_recv_cb_t - Definition of the mailbox callback.
+  * @mbox_msg:  The mailbox message.
+  * @priv:      The clients private data as specified in the call to mbox_setup.
+  *
+  * This function will be called upon reception of new mailbox messages.
+  */
+typedef void mbox_recv_cb_t (u32 mbox_msg, void *priv);
+/**
+  * struct mbox - Mailbox instance struct
+  * @list:              Linked list head.
+  * @pdev:              Pointer to device struct.
+  * @cb:                Callback function. Will be called
+  *                     when new data is received.
+  * @client_data:       Clients private data. Will be sent back
+  *                     in the callback function.
+  * @virtbase_peer:     Virtual address for outgoing mailbox.
+  * @virtbase_local:    Virtual address for incoming mailbox.
+  * @buffer:            Then internal queue for outgoing messages.
+  * @name:              Name of this mailbox.
+  * @buffer_available:  Completion variable to achieve "blocking send".
+  *                     This variable will be signaled when there is
+  *                     internal buffer space available.
+  * @client_blocked:    To keep track if any client is currently
+  *                     blocked.
+  * @lock:              Spinlock to protect this mailbox instance.
+  * @write_index:       Index in internal buffer to write to.
+  * @read_index:        Index in internal buffer to read from.
+  * @allocated:         Indicates whether this particular mailbox
+  *                     id has been allocated by someone.
+  */
+struct mbox {
+        struct list_head list;
+        struct platform_device *pdev;
+        mbox_recv_cb_t *cb;
+        void *client_data;
+        void __iomem *virtbase_peer;
+        void __iomem *virtbase_local;
+        u32 buffer[MBOX_BUF_SIZE];
+        char name[MBOX_NAME_SIZE];
+        struct completion buffer_available;
+        u8 client_blocked;
+        spinlock_t lock;
+        u8 write_index;
+        u8 read_index;
+        bool allocated;
+};
+/**
+  * mbox_setup - Set up a mailbox and return its instance.
+  * @mbox_id:   The ID number of the mailbox. 0 or 1 for modem CPU,
+  *             2 for modem DSP.
+  * @mbox_cb:   Pointer to the callback function to be called when a new message
+  *             is received.
+  * @priv:      Client user data which will be returned in the callback.
+  *
+  * Returns a mailbox instance to be specified in subsequent calls to mbox_send.
+  */
+struct mbox *mbox_setup(u8 mbox_id, mbox_recv_cb_t *mbox_cb, void *priv);
+/**
+  * mbox_send - Send a mailbox message.
+  * @mbox:      Mailbox instance (returned by mbox_setup)
+  * @mbox_msg:  The mailbox message to send.
+  * @block:     Specifies whether this call will block until send is possible,
+  *             or return an error if the mailbox buffer is full.
+  *
+  * Returns 0 on success or a negative error code on error. -ENOMEM indicates
+  * that the internal buffer is full and you have to try again later (or
+  * specify "block" in order to block until send is possible).
+  */
+int mbox_send(struct mbox *mbox, u32 mbox_msg, bool block);
+#endif /*INC_STE_MBOX_H*/

diff --git a/arch/arm/mach-ux500/include/mach/mbox-db5500.h b/arch/arm/mach-ux500/include/mach/mbox-db5500.h new file mode 100644 index 000000000000..7f9da4d2fbda --- /dev/null +++ b/arch/arm/mach-ux500/include/mach/mbox-db5500.h
@@ -0,0 +1,88 @@
	1	/*
	2	* Copyright (C) ST-Ericsson SA 2010
	3	* Author: Stefan Nilsson <stefan.xk.nilsson@stericsson.com> for ST-Ericsson.
	4	* Author: Martin Persson <martin.persson@stericsson.com> for ST-Ericsson.
	5	* License terms: GNU General Public License (GPL), version 2.
	6	*/
	7
	8	#ifndef __INC_STE_MBOX_H
	9	#define __INC_STE_MBOX_H
	10
	11	#define MBOX_BUF_SIZE 16
	12	#define MBOX_NAME_SIZE 8
	13
	14	/**
	15	* mbox_recv_cb_t - Definition of the mailbox callback.
	16	* @mbox_msg: The mailbox message.
	17	* @priv: The clients private data as specified in the call to mbox_setup.
	18	*
	19	* This function will be called upon reception of new mailbox messages.
	20	*/
	21	typedef void mbox_recv_cb_t (u32 mbox_msg, void *priv);
	22
	23	/**
	24	* struct mbox - Mailbox instance struct
	25	* @list: Linked list head.
	26	* @pdev: Pointer to device struct.
	27	* @cb: Callback function. Will be called
	28	* when new data is received.
	29	* @client_data: Clients private data. Will be sent back
	30	* in the callback function.
	31	* @virtbase_peer: Virtual address for outgoing mailbox.
	32	* @virtbase_local: Virtual address for incoming mailbox.
	33	* @buffer: Then internal queue for outgoing messages.
	34	* @name: Name of this mailbox.
	35	* @buffer_available: Completion variable to achieve "blocking send".
	36	* This variable will be signaled when there is
	37	* internal buffer space available.
	38	* @client_blocked: To keep track if any client is currently
	39	* blocked.
	40	* @lock: Spinlock to protect this mailbox instance.
	41	* @write_index: Index in internal buffer to write to.
	42	* @read_index: Index in internal buffer to read from.
	43	* @allocated: Indicates whether this particular mailbox
	44	* id has been allocated by someone.
	45	*/
	46	struct mbox {
	47	struct list_head list;
	48	struct platform_device *pdev;
	49	mbox_recv_cb_t *cb;
	50	void *client_data;
	51	void __iomem *virtbase_peer;
	52	void __iomem *virtbase_local;
	53	u32 buffer[MBOX_BUF_SIZE];
	54	char name[MBOX_NAME_SIZE];
	55	struct completion buffer_available;
	56	u8 client_blocked;
	57	spinlock_t lock;
	58	u8 write_index;
	59	u8 read_index;
	60	bool allocated;
	61	};
	62
	63	/**
	64	* mbox_setup - Set up a mailbox and return its instance.
	65	* @mbox_id: The ID number of the mailbox. 0 or 1 for modem CPU,
	66	* 2 for modem DSP.
	67	* @mbox_cb: Pointer to the callback function to be called when a new message
	68	* is received.
	69	* @priv: Client user data which will be returned in the callback.
	70	*
	71	* Returns a mailbox instance to be specified in subsequent calls to mbox_send.
	72	*/
	73	struct mbox mbox_setup(u8 mbox_id, mbox_recv_cb_t mbox_cb, void *priv);
	74
	75	/**
	76	* mbox_send - Send a mailbox message.
	77	* @mbox: Mailbox instance (returned by mbox_setup)
	78	* @mbox_msg: The mailbox message to send.
	79	* @block: Specifies whether this call will block until send is possible,
	80	* or return an error if the mailbox buffer is full.
	81	*
	82	* Returns 0 on success or a negative error code on error. -ENOMEM indicates
	83	* that the internal buffer is full and you have to try again later (or
	84	* specify "block" in order to block until send is possible).
	85	*/
	86	int mbox_send(struct mbox *mbox, u32 mbox_msg, bool block);
	87
	88	#endif /INC_STE_MBOX_H/