[RAPIDIO] Add RapidIO multi mport support

The original RapidIO driver suppose there is only one mpc85xx RIO controller
in system.  So, some data structures are defined as mpc85xx_rio global, such
as 'regs_win', 'dbell_ring', 'msg_tx_ring'.  Now, I changed them to mport's
private members.  And you can define multi RIO OF-nodes in dts file for multi
RapidIO controller in one processor, such as PCI/PCI-Ex host controllers in
Freescale's silicon.  And the mport operation function declaration should be
changed to know which RapidIO controller is target.
Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

drivers/rapidio/rio-access.c

@@ -48,7 +48,7 @@ int __rio_local_read_config_##size \
 	u32 data = 0;							\
 	if (RIO_##size##_BAD) return RIO_BAD_SIZE;			\
 	spin_lock_irqsave(&rio_config_lock, flags);			\
-	res = mport->ops->lcread(mport->id, offset, len, &data);	\
+	res = mport->ops->lcread(mport, mport->id, offset, len, &data);	\
 	*value = (type)data;						\
 	spin_unlock_irqrestore(&rio_config_lock, flags);		\
 	return res;							\
@@ -71,7 +71,7 @@ int __rio_local_write_config_##size \
 	unsigned long flags;						\
 	if (RIO_##size##_BAD) return RIO_BAD_SIZE;			\
 	spin_lock_irqsave(&rio_config_lock, flags);			\
-	res = mport->ops->lcwrite(mport->id, offset, len, value);	\
+	res = mport->ops->lcwrite(mport, mport->id, offset, len, value);\
 	spin_unlock_irqrestore(&rio_config_lock, flags);		\
 	return res;							\
 }
@@ -108,7 +108,7 @@ int rio_mport_read_config_##size \
 	u32 data = 0;							\
 	if (RIO_##size##_BAD) return RIO_BAD_SIZE;			\
 	spin_lock_irqsave(&rio_config_lock, flags);			\
-	res = mport->ops->cread(mport->id, destid, hopcount, offset, len, &data); \
+	res = mport->ops->cread(mport, mport->id, destid, hopcount, offset, len, &data); \
 	*value = (type)data;						\
 	spin_unlock_irqrestore(&rio_config_lock, flags);		\
 	return res;							\
@@ -131,7 +131,7 @@ int rio_mport_write_config_##size \
 	unsigned long flags;						\
 	if (RIO_##size##_BAD) return RIO_BAD_SIZE;			\
 	spin_lock_irqsave(&rio_config_lock, flags);			\
-	res = mport->ops->cwrite(mport->id, destid, hopcount, offset, len, value); \
+	res = mport->ops->cwrite(mport, mport->id, destid, hopcount, offset, len, value); \
 	spin_unlock_irqrestore(&rio_config_lock, flags);		\
 	return res;							\
 }
@@ -166,7 +166,7 @@ int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, u16 data)
 	unsigned long flags;
 
 	spin_lock_irqsave(&rio_doorbell_lock, flags);
-	res = mport->ops->dsend(mport->id, destid, data);
+	res = mport->ops->dsend(mport, mport->id, destid, data);
 	spin_unlock_irqrestore(&rio_doorbell_lock, flags);
 
 	return res;

include/linux/rio.h

@@ -163,6 +163,7 @@ struct rio_dbell {
  * @id: Port ID, unique among all ports
  * @index: Port index, unique among all port interfaces of the same type
  * @name: Port name string
+ * @priv: Master port private data
  */
 struct rio_mport {
 	struct list_head dbells;	/* list of doorbell events */
@@ -178,6 +179,7 @@ struct rio_mport {
 	unsigned char index;	/* port index, unique among all port
 				   interfaces of the same type */
 	unsigned char name[40];
+	void *priv;		/* Master port private data */
 };
 
 /**
@@ -229,13 +231,15 @@ struct rio_switch {
  * @dsend: Callback to send a doorbell message.
  */
 struct rio_ops {
-	int (*lcread) (int index, u32 offset, int len, u32 * data);
-	int (*lcwrite) (int index, u32 offset, int len, u32 data);
-	int (*cread) (int index, u16 destid, u8 hopcount, u32 offset, int len,
-		      u32 * data);
-	int (*cwrite) (int index, u16 destid, u8 hopcount, u32 offset, int len,
+	int (*lcread) (struct rio_mport *mport, int index, u32 offset, int len,
+			u32 *data);
+	int (*lcwrite) (struct rio_mport *mport, int index, u32 offset, int len,
 			u32 data);
-	int (*dsend) (int index, u16 destid, u16 data);
+	int (*cread) (struct rio_mport *mport, int index, u16 destid,
+			u8 hopcount, u32 offset, int len, u32 *data);
+	int (*cwrite) (struct rio_mport *mport, int index, u16 destid,
+			u8 hopcount, u32 offset, int len, u32 data);
+	int (*dsend) (struct rio_mport *mport, int index, u16 destid, u16 data);
 };
 
 #define RIO_RESOURCE_MEM	0x00000100