patch-2.4.7 linux/drivers/ieee1394/sbp2.h

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Lines: 585
Date: Thu Jul 19 17:48:16 2001
Orig file: v2.4.6/linux/drivers/ieee1394/sbp2.h
Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.6/linux/drivers/ieee1394/sbp2.h linux/drivers/ieee1394/sbp2.h
@@ -0,0 +1,584 @@
+/*
+ * sbp2.h - Defines and prototypes for sbp2.c
+ *
+ * Copyright (C) 2000 James Goodwin, Filanet Corporation (www.filanet.com)
+ * jamesg@filanet.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef SBP2_H
+#define SBP2_H
+
+#define SBP2_DEVICE_NAME		"sbp2"
+#define SBP2_DEVICE_NAME_SIZE		4
+
+/*
+ * SBP2 specific structures and defines
+ */
+
+#define ORB_FMT_CMD			0x0
+#define ORB_FMT_DUMMY			0x3
+
+#define ORB_DIRECTION_WRITE_TO_MEDIA    0x0
+#define ORB_DIRECTION_READ_FROM_MEDIA   0x1
+#define ORB_DIRECTION_NO_DATA_TRANSFER  0x2
+
+#define SPEED_S100			0x0
+#define SPEED_S200			0x1
+#define SPEED_S400			0x2
+#define SPEED_S800			0x3
+#define SPEED_S1600			0x4
+#define SPEED_S3200			0x5
+
+/* 2^(MAX_PAYLOAD+2) = Maximum data transfer length */
+#define MAX_PAYLOAD_S100		0x7
+#define MAX_PAYLOAD_S200		0x8
+#define MAX_PAYLOAD_S400		0x9
+
+#define ORB_SET_NOTIFY(value)                   ((value & 0x1) << 31)
+#define ORB_SET_RQ_FMT(value)                   ((value & 0x3) << 29)
+#define ORB_SET_NODE_ID(value)			((value & 0xffff) << 16)
+
+struct sbp2_dummy_orb {
+	volatile u32 next_ORB_hi;
+	volatile u32 next_ORB_lo;
+	u32 reserved1;
+        u32 reserved2;
+	u32 notify_rq_fmt;
+	u8 command_block[12];
+};
+
+#define ORB_SET_DATA_SIZE(value)                (value & 0xffff)
+#define ORB_SET_PAGE_SIZE(value)                ((value & 0x7) << 16)
+#define ORB_SET_PAGE_TABLE_PRESENT(value)       ((value & 0x1) << 19)
+#define ORB_SET_MAX_PAYLOAD(value)              ((value & 0xf) << 20)
+#define ORB_SET_SPEED(value)                    ((value & 0x7) << 24)
+#define ORB_SET_DIRECTION(value)                ((value & 0x1) << 27)
+
+struct sbp2_command_orb {
+	volatile u32 next_ORB_hi;
+	volatile u32 next_ORB_lo;
+	u32 data_descriptor_hi;
+	u32 data_descriptor_lo;
+	u32 misc;
+	u8 cdb[12];
+};
+
+#define LOGIN_REQUEST			0x0
+#define QUERY_LOGINS_REQUEST		0x1
+#define RECONNECT_REQUEST		0x3
+#define SET_PASSWORD_REQUEST		0x4
+#define LOGOUT_REQUEST			0x7
+#define ABORT_TASK_REQUEST		0xb
+#define ABORT_TASK_SET			0xc
+#define LOGICAL_UNIT_RESET		0xe
+#define TARGET_RESET_REQUEST		0xf
+
+#define ORB_SET_LUN(value)                      (value & 0xffff)
+#define ORB_SET_FUNCTION(value)                 ((value & 0xf) << 16)
+#define ORB_SET_RECONNECT(value)                ((value & 0xf) << 20)
+#define ORB_SET_EXCLUSIVE(value)                ((value & 0x1) << 28)
+#define ORB_SET_LOGIN_RESP_LENGTH(value)        (value & 0xffff)
+#define ORB_SET_PASSWD_LENGTH(value)            ((value & 0xffff) << 16)
+
+struct sbp2_login_orb {
+	u32 password_hi;
+	u32 password_lo;
+	u32 login_response_hi;
+	u32 login_response_lo;
+	u32 lun_misc;
+	u32 passwd_resp_lengths;
+	u32 status_FIFO_hi;
+	u32 status_FIFO_lo;
+};
+
+#define RESPONSE_GET_LOGIN_ID(value)            (value & 0xffff)
+#define RESPONSE_GET_LENGTH(value)              ((value >> 16) & 0xffff)
+#define RESPONSE_GET_RECONNECT_HOLD(value)      (value & 0xffff)
+
+struct sbp2_login_response {
+	u32 length_login_ID;
+	u32 command_block_agent_hi;
+	u32 command_block_agent_lo;
+	u32 reconnect_hold;
+};
+
+#define ORB_SET_LOGIN_ID(value)                 (value & 0xffff)
+
+struct sbp2_reconnect_orb {
+	u32 reserved1;
+	u32 reserved2;
+        u32 reserved3;
+        u32 reserved4;
+	u32 login_ID_misc;
+	u32 reserved5;
+	u32 status_FIFO_hi;
+	u32 status_FIFO_lo;
+};
+
+struct sbp2_logout_orb {
+	u32 reserved1;
+	u32 reserved2;
+        u32 reserved3;
+        u32 reserved4;
+	u32 login_ID_misc;
+	u32 reserved5;
+	u32 status_FIFO_hi;
+	u32 status_FIFO_lo;
+};
+
+#define PAGE_TABLE_SET_SEGMENT_BASE_HI(value)   (value & 0xffff)
+#define PAGE_TABLE_SET_SEGMENT_LENGTH(value)    ((value & 0xffff) << 16)
+
+struct sbp2_unrestricted_page_table {
+	u32 length_segment_base_hi;
+	u32 segment_base_lo;
+};
+
+#define RESP_STATUS_REQUEST_COMPLETE		0x0
+#define RESP_STATUS_TRANSPORT_FAILURE		0x1
+#define RESP_STATUS_ILLEGAL_REQUEST		0x2
+#define RESP_STATUS_VENDOR_DEPENDENT		0x3
+
+#define SBP2_STATUS_NO_ADDITIONAL_INFO		0x0
+#define SBP2_STATUS_REQ_TYPE_NOT_SUPPORTED	0x1
+#define SBP2_STATUS_SPEED_NOT_SUPPORTED		0x2
+#define SBP2_STATUS_PAGE_SIZE_NOT_SUPPORTED	0x3
+#define SBP2_STATUS_ACCESS_DENIED		0x4
+#define SBP2_STATUS_LU_NOT_SUPPORTED		0x5
+#define SBP2_STATUS_MAX_PAYLOAD_TOO_SMALL	0x6
+#define SBP2_STATUS_RESOURCES_UNAVAILABLE	0x8
+#define SBP2_STATUS_FUNCTION_REJECTED		0x9
+#define SBP2_STATUS_LOGIN_ID_NOT_RECOGNIZED	0xa
+#define SBP2_STATUS_DUMMY_ORB_COMPLETED		0xb
+#define SBP2_STATUS_REQUEST_ABORTED		0xc
+#define SBP2_STATUS_UNSPECIFIED_ERROR		0xff
+
+#define SFMT_CURRENT_ERROR			0x0
+#define SFMT_DEFERRED_ERROR			0x1
+#define SFMT_VENDOR_DEPENDENT_STATUS		0x3
+
+#define SBP2_SCSI_STATUS_GOOD			0x0
+#define SBP2_SCSI_STATUS_CHECK_CONDITION	0x2
+#define SBP2_SCSI_STATUS_CONDITION_MET		0x4
+#define SBP2_SCSI_STATUS_BUSY			0x8
+#define SBP2_SCSI_STATUS_RESERVATION_CONFLICT	0x18
+#define SBP2_SCSI_STATUS_COMMAND_TERMINATED	0x22
+
+#define SBP2_SCSI_STATUS_SELECTION_TIMEOUT	0xff
+
+#define STATUS_GET_ORB_OFFSET_HI(value)         (value & 0xffff)
+#define STATUS_GET_SBP_STATUS(value)            ((value >> 16) & 0xff)
+#define STATUS_GET_LENGTH(value)                ((value >> 24) & 0x7)
+#define STATUS_GET_DEAD_BIT(value)              ((value >> 27) & 0x1)
+#define STATUS_GET_RESP(value)                  ((value >> 28) & 0x3)
+#define STATUS_GET_SRC(value)                   ((value >> 30) & 0x3)
+
+struct sbp2_status_block {
+	u32 ORB_offset_hi_misc;
+	u32 ORB_offset_lo;
+        u8 command_set_dependent[24];
+};
+
+/*
+ * Miscellaneous SBP2 related config rom defines
+ */
+
+#define SBP2_STATUS_FIFO_ADDRESS				0xfffe00000000ULL     /* for write posting! */
+#define SBP2_STATUS_FIFO_ADDRESS_HI                             0xfffe
+#define SBP2_STATUS_FIFO_ADDRESS_LO                             0x0
+
+#define SBP2_UNIT_DIRECTORY_OFFSET_KEY				0xd1
+#define SBP2_CSR_OFFSET_KEY					0x54
+#define SBP2_UNIT_SPEC_ID_KEY					0x12
+#define SBP2_UNIT_SW_VERSION_KEY				0x13
+#define SBP2_COMMAND_SET_SPEC_ID_KEY				0x38
+#define SBP2_COMMAND_SET_KEY					0x39
+#define SBP2_UNIT_CHARACTERISTICS_KEY				0x3a
+#define SBP2_DEVICE_TYPE_AND_LUN_KEY				0x14
+#define SBP2_FIRMWARE_REVISION_KEY				0x3c
+
+#define SBP2_AGENT_STATE_OFFSET					0x00ULL
+#define SBP2_AGENT_RESET_OFFSET					0x04ULL
+#define SBP2_ORB_POINTER_OFFSET					0x08ULL
+#define SBP2_DOORBELL_OFFSET					0x10ULL
+#define SBP2_UNSOLICITED_STATUS_ENABLE_OFFSET			0x14ULL
+#define SBP2_UNSOLICITED_STATUS_VALUE				0xf
+
+#define SBP2_BUSY_TIMEOUT_ADDRESS				0xfffff0000210ULL
+#define SBP2_BUSY_TIMEOUT_VALUE					0xf
+
+#define SBP2_AGENT_RESET_DATA					0xf
+
+/*
+ * Unit spec id and sw version entry for SBP-2 devices
+ */
+
+#define SBP2_UNIT_SPEC_ID_ENTRY					0x1200609e
+#define SBP2_SW_VERSION_ENTRY					0x13010483
+
+/*
+ * Miscellaneous general config rom related defines
+ */
+
+#define CONFIG_ROM_INITIAL_MEMORY_SPACE 			0xfffff0000000ULL
+
+#define CONFIG_ROM_BASE_ADDRESS					0xfffff0000400ULL
+#define CONFIG_ROM_ROOT_DIR_BASE				0xfffff0000414ULL
+#define CONFIG_ROM_NODE_UNIQUE_ID_HI_ADDRESS			0xfffff000040cULL
+#define CONFIG_ROM_NODE_UNIQUE_ID_LO_ADDRESS			0xfffff0000410ULL
+#define CONFIG_ROM_SIGNATURE_ADDRESS				0xfffff0000404ULL
+#define CONFIG_ROM_NODE_OPTIONS					0xfffff0000408ULL
+#define CONFIG_ROM_UNIT_DIRECTORY_OFFSET			0xfffff0000424ULL
+
+#define IEEE1394_CONFIG_ROM_SIGNATURE				0x31333934
+
+#define SBP2_128KB_BROKEN_FIRMWARE				0xa0b800
+#define SBP2_BROKEN_FIRMWARE_MAX_TRANSFER			0x20000
+
+/*
+ * Flags for SBP-2 functions
+ */
+#define SBP2_SEND_NO_WAIT					0x00000001
+
+/*
+ * SCSI specific stuff
+ */
+
+#define SBP2_MAX_SG_ELEMENTS		SG_ALL
+#define SBP2_CLUSTERING			ENABLE_CLUSTERING
+#define SBP2_MAX_SG_ELEMENT_LENGTH	0xf000
+#define SBP2SCSI_MAX_SCSI_IDS		8
+#define SBP2SCSI_MAX_OUTSTANDING_CMDS	8	/* Max total outstanding sbp2 commands allowed at a time! */
+#define SBP2SCSI_MAX_CMDS_PER_LUN	4 	/* Max outstanding sbp2 commands per device - tune as needed */
+
+#ifndef TYPE_SDAD
+#define TYPE_SDAD			0x0e	/* simplified direct access device */
+#endif
+
+/*
+ * SCSI direction table... since the scsi stack doesn't specify direction...   =(
+ *
+ * DIN = IN data direction
+ * DOU = OUT data direction
+ * DNO = No data transfer
+ * DUN = Unknown data direction
+ */
+#define DIN				ORB_DIRECTION_READ_FROM_MEDIA
+#define DOU				ORB_DIRECTION_WRITE_TO_MEDIA
+#define DNO				ORB_DIRECTION_NO_DATA_TRANSFER
+#define DUN				DIN 
+
+static unchar sbp2scsi_direction_table[0x100] = {
+	DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
+	DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
+	DIN,DUN,DIN,DIN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
+	DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
+	DOU,DOU,DIN,DIN,DIN,DNO,DIN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DNO,DUN,
+	DUN,DIN,DIN,DNO,DOU,DOU,DUN,DUN,DNO,DIN,DIN,DNO,DIN,DOU,DUN,DUN,
+	DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
+	DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
+	DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
+	DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
+	DUN,DNO,DOU,DOU,DIN,DNO,DNO,DNO,DIN,DNO,DOU,DUN,DNO,DIN,DOU,DOU,
+	DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DIN,DNO,DNO,DNO,DIN,DIN,DUN,
+	DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
+	DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
+	DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
+	DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
+};
+
+
+/*
+ * Scsi_Host structure
+ */
+#define SBP2SCSI { \
+	name:		"IEEE1394 SBP-2",		\
+	detect:		sbp2scsi_detect,		\
+	release:	sbp2scsi_release,		\
+	info:		sbp2scsi_info,			\
+	queuecommand:	sbp2scsi_queuecommand,		\
+	abort:		sbp2scsi_abort,			\
+	reset:		sbp2scsi_reset,			\
+	bios_param:	sbp2scsi_biosparam,		\
+	can_queue:	SBP2SCSI_MAX_OUTSTANDING_CMDS,	\
+	this_id:	-1,				\
+	sg_tablesize:	SBP2_MAX_SG_ELEMENTS,		\
+	cmd_per_lun:	SBP2SCSI_MAX_CMDS_PER_LUN,	\
+	use_clustering:	SBP2_CLUSTERING,		\
+	emulated:	1				\
+}
+
+/*
+ * Number of request packets available for actual sbp2 I/O requests (these are used
+ * for sending command and agent reset packets).
+ */
+#define SBP2_MAX_REQUEST_PACKETS	SBP2SCSI_MAX_OUTSTANDING_CMDS	/* Per host adapter instance */
+#define SBP2_MAX_COMMAND_ORBS		SBP2SCSI_MAX_CMDS_PER_LUN * 2	/* Per sbp2 device instance */
+
+/*
+ * Request packets structure (used for sending command and agent reset packets)
+ */
+struct sbp2_request_packet {
+
+	struct list_head list;
+	struct hpsb_packet *packet;
+	struct tq_struct tq;
+	void *hi_context;
+
+};
+
+/* 
+ * Encapsulates all the info necessary for an outstanding command. 
+ */
+struct sbp2_command_info {
+
+	struct list_head list;
+	struct sbp2_command_orb command_orb;
+	dma_addr_t command_orb_dma;
+	Scsi_Cmnd *Current_SCpnt;
+	void (*Current_done)(Scsi_Cmnd *);
+	unsigned int linked;
+
+	/* Also need s/g structure for each sbp2 command */
+	struct sbp2_unrestricted_page_table scatter_gather_element[SBP2_MAX_SG_ELEMENTS];
+	dma_addr_t sge_dma;
+	void *sge_buffer;
+	dma_addr_t cmd_dma;
+	int dma_type;
+	unsigned long dma_size;
+	int dma_dir;
+
+};
+
+/*
+ * Information needed on a per scsi id basis (one for each sbp2 device)
+ */
+struct scsi_id_instance_data {
+
+	/*
+	 * Various sbp2 specific structures
+	 */
+	struct sbp2_command_orb *last_orb;
+	struct sbp2_login_orb *login_orb;
+	dma_addr_t login_orb_dma;
+	struct sbp2_login_response *login_response;
+	dma_addr_t login_response_dma;
+	struct sbp2_reconnect_orb *reconnect_orb;
+	dma_addr_t reconnect_orb_dma;
+	struct sbp2_logout_orb *logout_orb;
+	dma_addr_t logout_orb_dma;
+	struct sbp2_status_block status_block;
+
+	/*
+	 * Stuff we need to know about the sbp2 device itself
+	 */
+	u64 node_unique_id;
+	u64 sbp2_management_agent_addr;
+	u64 sbp2_command_block_agent_addr;
+	u32 node_id;
+	u32 speed_code;
+	u32 max_payload_size;
+
+	/*
+	 * Values pulled from the device's unit directory
+	 */
+	u32 sbp2_unit_spec_id;
+	u32 sbp2_unit_sw_version;
+	u32 sbp2_command_set_spec_id;
+	u32 sbp2_command_set;
+	u32 sbp2_unit_characteristics;
+	u32 sbp2_device_type_and_lun;
+	u32 sbp2_firmware_revision;
+
+	/* 
+	 * Wait queue used for logins, reconnects, logouts 
+	 */
+	wait_queue_head_t sbp2_login_wait;
+
+	/*
+	 * Flag noting whether the sbp2 device is currently validated (for use during
+	 * bus resets).
+	 */
+	u32 validated;
+
+	/* 
+	 * Pool of command orbs, so we can have more than overlapped command per id
+	 */
+	spinlock_t sbp2_command_orb_lock;
+	struct list_head sbp2_command_orb_inuse;
+	struct list_head sbp2_command_orb_completed;
+	u32 sbp2_total_command_orbs;
+
+};
+
+/*
+ * Sbp2 host data structure (one per sbp2 host)
+ */
+struct sbp2scsi_host_info {
+
+	/*
+	 * For use in keeping track of hosts
+	 */
+	struct list_head list;
+	struct hpsb_host *host;
+
+	/*
+	 * Spin locks for command processing and packet pool management
+	 */
+	spinlock_t sbp2_command_lock;
+	spinlock_t sbp2_request_packet_lock;
+
+	/*
+	 * Flag indicating if a bus reset (or device detection) is in progress
+	 */
+	u32 bus_reset_in_progress;
+
+	/*
+	 * We currently use a kernel thread for dealing with bus resets and sbp2
+	 * device detection. We use this to wake up the thread when needed.
+	 */
+	wait_queue_head_t sbp2_detection_wait;
+
+	/* 
+	 * PID of sbp2 detection kernel thread 
+	 */
+	int sbp2_detection_pid;
+
+	/*
+	 * Lists keeping track of inuse/free sbp2_request_packets. These structures are
+	 * used for sending out sbp2 command and agent reset packets. We initially create
+	 * a pool of request packets so that we don't have to do any kmallocs while in critical
+	 * I/O paths.
+	 */
+	struct list_head sbp2_req_inuse;
+	struct list_head sbp2_req_free;
+
+	/*
+	 * Stuff to keep track of the initial scsi bus scan (so that we don't miss it)
+	 */
+	u32 initial_scsi_bus_scan_complete;
+	Scsi_Cmnd *bus_scan_SCpnt;
+	void (*bus_scan_done)(Scsi_Cmnd *);
+
+	/*
+	 * Here is the pool of request packets. All the hpsb packets (for 1394 bus transactions)
+	 * are allocated at init and simply re-initialized when needed.
+	 */
+	struct sbp2_request_packet request_packet[SBP2_MAX_REQUEST_PACKETS];
+
+	/*
+	 * SCSI ID instance data (one for each sbp2 device instance possible)
+	 */
+	struct scsi_id_instance_data *scsi_id[SBP2SCSI_MAX_SCSI_IDS];
+
+};
+
+/*
+ * Function prototypes
+ */
+
+/*
+ * Various utility prototypes
+ */
+static int sbp2util_read_quadlet(struct sbp2scsi_host_info *hi, nodeid_t node, u64 addr,
+				 quadlet_t *buffer);
+static int sbp2util_unit_directory(struct sbp2scsi_host_info *hi, nodeid_t node, u64 *addr);
+static int sbp2util_create_request_packet_pool(struct sbp2scsi_host_info *hi);
+static void sbp2util_remove_request_packet_pool(struct sbp2scsi_host_info *hi);
+static struct sbp2_request_packet *sbp2util_allocate_write_request_packet(struct sbp2scsi_host_info *hi,
+									  nodeid_t node, u64 addr,
+									  size_t data_size,
+									  quadlet_t data);
+static void sbp2util_free_request_packet(struct sbp2_request_packet *request_packet);
+static int sbp2util_create_command_orb_pool(struct scsi_id_instance_data *scsi_id, struct sbp2scsi_host_info *hi);
+static void sbp2util_remove_command_orb_pool(struct scsi_id_instance_data *scsi_id, struct sbp2scsi_host_info *hi);
+static struct sbp2_command_info *sbp2util_find_command_for_orb(struct scsi_id_instance_data *scsi_id, dma_addr_t orb);
+static struct sbp2_command_info *sbp2util_find_command_for_SCpnt(struct scsi_id_instance_data *scsi_id, void *SCpnt);
+static struct sbp2_command_info *sbp2util_allocate_command_orb(struct scsi_id_instance_data *scsi_id, 
+							  Scsi_Cmnd *Current_SCpnt, 
+							  void (*Current_done)(Scsi_Cmnd *),
+							  struct sbp2scsi_host_info *hi);
+static void sbp2util_mark_command_completed(struct scsi_id_instance_data *scsi_id,
+		struct sbp2_command_info *command);
+
+/*
+ * IEEE-1394 core driver related prototypes
+ */
+static void sbp2_remove_unvalidated_devices(struct sbp2scsi_host_info *hi);
+static int sbp2_start_device(struct sbp2scsi_host_info *hi, int node_id);
+static int sbp2_check_device(struct sbp2scsi_host_info *hi, int node_id);
+static void sbp2_bus_reset_handler(void *context);
+static void sbp2_add_host(struct hpsb_host *host);
+static struct sbp2scsi_host_info *sbp2_find_host_info(struct hpsb_host *host);
+static void sbp2_remove_host(struct hpsb_host *host);
+static void sbp2_host_reset(struct hpsb_host *host);
+static int sbp2_detection_thread(void *__sbp2);
+int sbp2_init(void);
+void sbp2_cleanup(void);
+#if 0
+static int sbp2_handle_physdma_write(struct hpsb_host *host, int nodeid, quadlet_t *data,
+				     u64 addr, unsigned int length);
+static int sbp2_handle_physdma_read(struct hpsb_host *host, int nodeid, quadlet_t *data,
+				    u64 addr, unsigned int length);
+#endif
+/*
+ * SBP-2 protocol related prototypes
+ */
+static int sbp2_login_device(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id);
+static int sbp2_reconnect_device(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id); 
+static int sbp2_logout_device(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id); 
+static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, int destid,
+				    quadlet_t *data, u64 addr, unsigned int length);
+static int sbp2_agent_reset(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id, u32 flags);
+static int sbp2_create_command_orb(struct sbp2scsi_host_info *hi, 
+				   struct scsi_id_instance_data *scsi_id,
+				   struct sbp2_command_info *command,
+				   unchar *scsi_cmd,
+				   unsigned int scsi_use_sg,
+				   unsigned int scsi_request_bufflen,
+				   void *scsi_request_buffer, int dma_dir);
+static int sbp2_link_orb_command(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
+				 struct sbp2_command_info *command);
+static int sbp2_send_command(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
+			     Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *));
+static int sbp2_send_split_command(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
+				   Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *));
+static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status, unchar *sense_data);
+static void sbp2_check_sbp2_command(unchar *cmd);
+static void sbp2_check_sbp2_response(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id, 
+				     Scsi_Cmnd *SCpnt);
+static int sbp2_parse_unit_directory(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id);
+static int sbp2_set_busy_timeout(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id);
+static int sbp2_max_speed_and_size(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id);
+
+/*
+ * Scsi interface related prototypes
+ */
+static const char *sbp2scsi_info (struct Scsi_Host *host);
+static int sbp2scsi_detect (Scsi_Host_Template *tpnt);
+void sbp2scsi_setup(char *str, int *ints);
+static int sbp2scsi_biosparam (Scsi_Disk *disk, kdev_t dev, int geom[]);
+static int sbp2scsi_abort (Scsi_Cmnd *SCpnt); 
+static int sbp2scsi_reset (Scsi_Cmnd *SCpnt, unsigned int reset_flags); 
+static int sbp2scsi_queuecommand (Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *));
+static void sbp2scsi_complete_all_commands(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id, 
+					   u32 status);
+static void sbp2scsi_complete_command(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id, 
+				      u32 scsi_status, Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *));
+static void sbp2scsi_register_scsi_host(struct sbp2scsi_host_info *hi);
+
+#endif /* SBP2_H */
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