path: root/drivers/ieee1394/ieee1394.h

/*
 * Generic IEEE 1394 definitions
 */

#ifndef _IEEE1394_IEEE1394_H
#define _IEEE1394_IEEE1394_H

#define TCODE_WRITEQ		0x0
#define TCODE_WRITEB		0x1
#define TCODE_WRITE_RESPONSE	0x2
#define TCODE_READQ		0x4
#define TCODE_READB		0x5
#define TCODE_READQ_RESPONSE	0x6
#define TCODE_READB_RESPONSE	0x7
#define TCODE_CYCLE_START	0x8
#define TCODE_LOCK_REQUEST	0x9
#define TCODE_ISO_DATA		0xa
#define TCODE_STREAM_DATA	0xa
#define TCODE_LOCK_RESPONSE	0xb

#define RCODE_COMPLETE		0x0
#define RCODE_CONFLICT_ERROR	0x4
#define RCODE_DATA_ERROR	0x5
#define RCODE_TYPE_ERROR	0x6
#define RCODE_ADDRESS_ERROR	0x7

#define EXTCODE_MASK_SWAP	0x1
#define EXTCODE_COMPARE_SWAP	0x2
#define EXTCODE_FETCH_ADD	0x3
#define EXTCODE_LITTLE_ADD	0x4
#define EXTCODE_BOUNDED_ADD	0x5
#define EXTCODE_WRAP_ADD	0x6

#define ACK_COMPLETE		0x1
#define ACK_PENDING		0x2
#define ACK_BUSY_X		0x4
#define ACK_BUSY_A		0x5
#define ACK_BUSY_B		0x6
#define ACK_TARDY		0xb
#define ACK_CONFLICT_ERROR	0xc
#define ACK_DATA_ERROR		0xd
#define ACK_TYPE_ERROR		0xe
#define ACK_ADDRESS_ERROR	0xf

/* Non-standard "ACK codes" for internal use */
#define ACKX_NONE		(-1)
#define ACKX_SEND_ERROR		(-2)
#define ACKX_ABORTED		(-3)
#define ACKX_TIMEOUT		(-4)

#define IEEE1394_SPEED_100	0x00
#define IEEE1394_SPEED_200	0x01
#define IEEE1394_SPEED_400	0x02
#define IEEE1394_SPEED_800	0x03
#define IEEE1394_SPEED_1600	0x04
#define IEEE1394_SPEED_3200	0x05

/* The current highest tested speed supported by the subsystem */
#define IEEE1394_SPEED_MAX	IEEE1394_SPEED_800

/* Maps speed values above to a string representation */
extern const char *hpsb_speedto_str[];

/* 1394a cable PHY packets */
#define SELFID_PWRCL_NO_POWER		0x0
#define SELFID_PWRCL_PROVIDE_15W	0x1
#define SELFID_PWRCL_PROVIDE_30W	0x2
#define SELFID_PWRCL_PROVIDE_45W	0x3
#define SELFID_PWRCL_USE_1W		0x4
#define SELFID_PWRCL_USE_3W		0x5
#define SELFID_PWRCL_USE_6W		0x6
#define SELFID_PWRCL_USE_10W		0x7

#define SELFID_PORT_CHILD		0x3
#define SELFID_PORT_PARENT		0x2
#define SELFID_PORT_NCONN		0x1
#define SELFID_PORT_NONE		0x0

#define SELFID_SPEED_UNKNOWN		0x3	/* 1394b PHY */

#define PHYPACKET_LINKON			0x40000000
#define PHYPACKET_PHYCONFIG_R			0x00800000
#define PHYPACKET_PHYCONFIG_T			0x00400000
#define EXTPHYPACKET_TYPE_PING			0x00000000
#define EXTPHYPACKET_TYPE_REMOTEACCESS_BASE	0x00040000
#define EXTPHYPACKET_TYPE_REMOTEACCESS_PAGED	0x00140000
#define EXTPHYPACKET_TYPE_REMOTEREPLY_BASE	0x000C0000
#define EXTPHYPACKET_TYPE_REMOTEREPLY_PAGED	0x001C0000
#define EXTPHYPACKET_TYPE_REMOTECOMMAND		0x00200000
#define EXTPHYPACKET_TYPE_REMOTECONFIRMATION	0x00280000
#define EXTPHYPACKET_TYPE_RESUME		0x003C0000

#define EXTPHYPACKET_TYPEMASK			0xC0FC0000

#define PHYPACKET_PORT_SHIFT		24
#define PHYPACKET_GAPCOUNT_SHIFT	16

/* 1394a PHY register map bitmasks */
#define PHY_00_PHYSICAL_ID	0xFC
#define PHY_00_R		0x02 /* Root */
#define PHY_00_PS		0x01 /* Power Status*/
#define PHY_01_RHB		0x80 /* Root Hold-Off */
#define PHY_01_IBR		0x80 /* Initiate Bus Reset */
#define PHY_01_GAP_COUNT	0x3F
#define PHY_02_EXTENDED		0xE0 /* 0x7 for 1394a-compliant PHY */
#define PHY_02_TOTAL_PORTS	0x1F
#define PHY_03_MAX_SPEED	0xE0
#define PHY_03_DELAY		0x0F
#define PHY_04_LCTRL		0x80 /* Link Active Report Control */
#define PHY_04_CONTENDER	0x40
#define PHY_04_JITTER		0x38
#define PHY_04_PWR_CLASS	0x07 /* Power Class */
#define PHY_05_WATCHDOG		0x80
#define PHY_05_ISBR		0x40 /* Initiate Short Bus Reset */
#define PHY_05_LOOP		0x20 /* Loop Detect */
#define PHY_05_PWR_FAIL		0x10 /* Cable Power Failure Detect */
#define PHY_05_TIMEOUT		0x08 /* Arbitration State Machine Timeout */
#define PHY_05_PORT_EVENT	0x04 /* Port Event Detect */
#define PHY_05_ENAB_ACCEL	0x02 /* Enable Arbitration Acceleration */
#define PHY_05_ENAB_MULTI	0x01 /* Ena. Multispeed Packet Concatenation */

#include <asm/byteorder.h>

/* '1' '3' '9' '4' in ASCII */
#define IEEE1394_BUSID_MAGIC	cpu_to_be32(0x31333934)

#ifdef __BIG_ENDIAN_BITFIELD

struct selfid {
	u32 packet_identifier:2; /* always binary 10 */
	u32 phy_id:6;
	/* byte */
	u32 extended:1; /* if true is struct ext_selfid */
	u32 link_active:1;
	u32 gap_count:6;
	/* byte */
	u32 speed:2;
	u32 phy_delay:2;
	u32 contender:1;
	u32 power_class:3;
	/* byte */
	u32 port0:2;
	u32 port1:2;
	u32 port2:2;
	u32 initiated_reset:1;
	u32 more_packets:1;
} __attribute__((packed));

struct ext_selfid {
	u32 packet_identifier:2; /* always binary 10 */
	u32 phy_id:6;
	/* byte */
	u32 extended:1; /* if false is struct selfid */
	u32 seq_nr:3;
	u32 reserved:2;
	u32 porta:2;
	/* byte */
	u32 portb:2;
	u32 portc:2;
	u32 portd:2;
	u32 porte:2;
	/* byte */
	u32 portf:2;
	u32 portg:2;
	u32 porth:2;
	u32 reserved2:1;
	u32 more_packets:1;
} __attribute__((packed));

#elif defined __LITTLE_ENDIAN_BITFIELD /* __BIG_ENDIAN_BITFIELD */

/*
 * Note: these mean to be bit fields of a big endian SelfID as seen on a little
 * endian machine.  Without swapping.
 */

struct selfid {
	u32 phy_id:6;
	u32 packet_identifier:2; /* always binary 10 */
	/* byte */
	u32 gap_count:6;
	u32 link_active:1;
	u32 extended:1; /* if true is struct ext_selfid */
	/* byte */
	u32 power_class:3;
	u32 contender:1;
	u32 phy_delay:2;
	u32 speed:2;
	/* byte */
	u32 more_packets:1;
	u32 initiated_reset:1;
	u32 port2:2;
	u32 port1:2;
	u32 port0:2;
} __attribute__((packed));

struct ext_selfid {
	u32 phy_id:6;
	u32 packet_identifier:2; /* always binary 10 */
	/* byte */
	u32 porta:2;
	u32 reserved:2;
	u32 seq_nr:3;
	u32 extended:1; /* if false is struct selfid */
	/* byte */
	u32 porte:2;
	u32 portd:2;
	u32 portc:2;
	u32 portb:2;
	/* byte */
	u32 more_packets:1;
	u32 reserved2:1;
	u32 porth:2;
	u32 portg:2;
	u32 portf:2;
} __attribute__((packed));

#else
#error What? PDP endian?
#endif /* __BIG_ENDIAN_BITFIELD */

#endif /* _IEEE1394_IEEE1394_H */