rapidio/tsi721: add filtered debug output

into the corresponding message queue. Messaging callbacks are implemented to be

fully compatible with RIONET driver (Ethernet over RapidIO messaging services).

1. Module parameters:

- 'dbg_level' - This parameter allows to control amount of debug information

        generated by this device driver. This parameter is formed by set of

        This parameter can be changed bit masks that correspond to the specific

        functional block.

        For mask definitions see 'drivers/rapidio/devices/tsi721.h'

        This parameter can be changed dynamically.

        Use CONFIG_RAPIDIO_DEBUG=y to enable debug output at the top level.

II. Known problems

  None.

#ifndef __TSI721_H

#define __TSI721_H

/* Debug output filtering masks */

enum {

	DBG_NONE	= 0,

	DBG_INIT	= BIT(0), /* driver init */

	DBG_EXIT	= BIT(1), /* driver exit */

	DBG_MPORT	= BIT(2), /* mport add/remove */

	DBG_MAINT	= BIT(3), /* maintenance ops messages */

	DBG_DMA		= BIT(4), /* DMA transfer messages */

	DBG_DMAV	= BIT(5), /* verbose DMA transfer messages */

	DBG_IBW		= BIT(6), /* inbound window */

	DBG_EVENT	= BIT(7), /* event handling messages */

	DBG_OBW		= BIT(8), /* outbound window messages */

	DBG_DBELL	= BIT(9), /* doorbell messages */

	DBG_OMSG	= BIT(10), /* doorbell messages */

	DBG_IMSG	= BIT(11), /* doorbell messages */

	DBG_ALL		= ~0,

};

#ifdef DEBUG

extern u32 dbg_level;

#define tsi_debug(level, dev, fmt, arg...)				\

	do {								\

		if (DBG_##level & dbg_level)				\

			dev_dbg(dev, "%s: " fmt "\n", __func__, ##arg);	\

	} while (0)

#else

#define tsi_debug(level, dev, fmt, arg...) \

		no_printk(KERN_DEBUG "%s: " fmt "\n", __func__, ##arg)

#endif

#define tsi_info(dev, fmt, arg...) \

	dev_info(dev, "%s: " fmt "\n", __func__, ##arg)

#define tsi_warn(dev, fmt, arg...) \

	dev_warn(dev, "%s: WARNING " fmt "\n", __func__, ##arg)

#define tsi_err(dev, fmt, arg...) \

	dev_err(dev, "%s: ERROR " fmt "\n", __func__, ##arg)

#define DRV_NAME	"tsi721"

#define DEFAULT_HOPCOUNT	0xff