patch-2.4.21 linux-2.4.21/drivers/ieee1394/sbp2.h

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Lines: 365
Date: 2003-06-13 07:51:34.000000000 -0700
Orig file: linux-2.4.20/drivers/ieee1394/sbp2.h
Orig date: 2002-11-28 15:53:13.000000000 -0800

diff -urN linux-2.4.20/drivers/ieee1394/sbp2.h linux-2.4.21/drivers/ieee1394/sbp2.h
@@ -23,42 +23,23 @@
 #define SBP2_H
 
 /* Some compatibility code */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 #define SCSI_REGISTER_HOST(tmpl)	scsi_register_module(MODULE_SCSI_HA, tmpl)
 #define SCSI_UNREGISTER_HOST(tmpl)	scsi_unregister_module(MODULE_SCSI_HA, tmpl)
-#else
-#define SCSI_REGISTER_HOST(tmpl)	scsi_register_host(tmpl)
-#define SCSI_UNREGISTER_HOST(tmpl)	scsi_unregister_host(tmpl)
-#endif
 
 #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 ORB_SET_NULL_PTR(value)			((value & 0x1) << 31)
 #define ORB_SET_NOTIFY(value)                   ((value & 0x1) << 31)
-#define ORB_SET_RQ_FMT(value)                   ((value & 0x3) << 29)
+#define ORB_SET_RQ_FMT(value)                   ((value & 0x3) << 29) /* unused ? */
 #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)
@@ -116,6 +97,29 @@
 
 #define ORB_SET_LOGIN_ID(value)                 (value & 0xffff)
 
+#define ORB_SET_QUERY_LOGINS_RESP_LENGTH(value) (value & 0xffff)
+
+struct sbp2_query_logins_orb {
+	u32 reserved1;
+	u32 reserved2;
+	u32 query_response_hi;
+	u32 query_response_lo;
+	u32 lun_misc;
+	u32 reserved_resp_length;
+	u32 status_FIFO_hi;
+	u32 status_FIFO_lo;
+};
+
+#define RESPONSE_GET_MAX_LOGINS(value)          (value & 0xffff)
+#define RESPONSE_GET_ACTIVE_LOGINS(value)       ((RESPONSE_GET_LENGTH(value) - 4) / 12)
+
+struct sbp2_query_logins_response {
+	u32 length_max_logins;
+	u32 misc_IDs;
+	u32 initiator_misc_hi;
+	u32 initiator_misc_lo;
+};
+
 struct sbp2_reconnect_orb {
 	u32 reserved1;
 	u32 reserved2;
@@ -253,25 +257,15 @@
  * Other misc defines
  */
 #define SBP2_128KB_BROKEN_FIRMWARE				0xa0b800
-#define SBP2_BROKEN_FIRMWARE_MAX_TRANSFER			0x20000
 
 #define SBP2_DEVICE_TYPE_LUN_UNINITIALIZED			0xffffffff
 
 /*
- * 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		16	/* Max sbp2 device instances supported */
-#define SBP2SCSI_MAX_OUTSTANDING_CMDS	8	/* Max total outstanding sbp2 commands allowed at a time! */
-#define SBP2SCSI_MAX_CMDS_PER_LUN	1 	/* Max outstanding sbp2 commands per device - tune as needed */
+#define SBP2SCSI_MAX_SCSI_IDS		32	/* Max sbp2 device instances supported */
 #define SBP2_MAX_SECTORS		255	/* Max sectors supported */
 
 #ifndef TYPE_SDAD
@@ -314,26 +308,18 @@
 	DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
 };
 
-#define SBP2_MAX_REQUEST_PACKETS	(sbp2_max_outstanding_cmds * 2)
-#define SBP2_MAX_COMMAND_ORBS		(sbp2_max_cmds_per_lun * 2)
-
-/*
- * 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;
-
-};
-
+/* This should be safe. If there's more than one LUN per node, we could
+ * saturate the tlabel's though.  */
+#define SBP2_MAX_CMDS_PER_LUN   8
+#define SBP2_MAX_SCSI_QUEUE	(SBP2_MAX_CMDS_PER_LUN * SBP2SCSI_MAX_SCSI_IDS)
+#define SBP2_MAX_COMMAND_ORBS	SBP2_MAX_SCSI_QUEUE
 
 /* This is the two dma types we use for cmd_dma below */
-#define CMD_DMA_NONE   0x0
-#define CMD_DMA_PAGE   0x1
-#define CMD_DMA_SINGLE 0x2
+enum cmd_dma_types {
+	CMD_DMA_NONE,
+	CMD_DMA_PAGE,
+	CMD_DMA_SINGLE
+};
 
 /* 
  * Encapsulates all the info necessary for an outstanding command. 
@@ -347,11 +333,11 @@
 	void (*Current_done)(Scsi_Cmnd *);
 
 	/* Also need s/g structure for each sbp2 command */
-	struct sbp2_unrestricted_page_table scatter_gather_element[SBP2_MAX_SG_ELEMENTS] ____cacheline_aligned;
+	struct sbp2_unrestricted_page_table scatter_gather_element[SG_ALL] ____cacheline_aligned;
 	dma_addr_t sge_dma ____cacheline_aligned;
 	void *sge_buffer;
 	dma_addr_t cmd_dma;
-	int dma_type;
+	enum cmd_dma_types dma_type;
 	unsigned long dma_size;
 	int dma_dir;
 
@@ -361,6 +347,10 @@
 #define SBP2_BREAKAGE_128K_MAX_TRANSFER		0x1
 #define SBP2_BREAKAGE_INQUIRY_HACK		0x2
 
+
+struct sbp2scsi_host_info;
+
+
 /*
  * Information needed on a per scsi id basis (one for each sbp2 device)
  */
@@ -377,6 +367,10 @@
 	dma_addr_t login_orb_dma;
 	struct sbp2_login_response *login_response;
 	dma_addr_t login_response_dma;
+	struct sbp2_query_logins_orb *query_logins_orb;
+	dma_addr_t query_logins_orb_dma;
+	struct sbp2_query_logins_response *query_logins_response;
+	dma_addr_t query_logins_response_dma;
 	struct sbp2_reconnect_orb *reconnect_orb;
 	dma_addr_t reconnect_orb_dma;
 	struct sbp2_logout_orb *logout_orb;
@@ -402,7 +396,7 @@
 	u32 sbp2_firmware_revision;
 
 	/* 
-	 * Variable used for logins, reconnects, logouts 
+	 * Variable used for logins, reconnects, logouts, query logins
 	 */
 	atomic_t sbp2_login_complete;
 
@@ -412,11 +406,13 @@
 	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;
 
 	/* Node entry, as retrieved from NodeMgr entries */
 	struct node_entry *ne;
 
+	/* A backlink to our host_info */
+	struct sbp2scsi_host_info *hi;
+
 	/* Device specific workarounds/brokeness */
 	u32 workarounds;
 };
@@ -425,46 +421,24 @@
  * 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
-	 */
+	/* Spin locks for command processing */
 	spinlock_t sbp2_command_lock;
-	spinlock_t sbp2_request_packet_lock;
 
-	/*
-	 * This is the scsi host we register with the scsi mid level.
-	 * We keep a reference to it here, so we can unregister it
-	 * when the hpsb_host is removed.
-	 */
+	/* This is the scsi host we register with the scsi mid level. */
 	struct Scsi_Host *scsi_host;
 
-	/*
-	 * 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;
+	/* Our allocated scsi_host_template */
+	Scsi_Host_Template sht;
 
-	/*
-	 * 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;
+	/* The proc_name used with the above sht */
+	char proc_name[32];
 
-	/*
-	 * SCSI ID instance data (one for each sbp2 device instance possible)
-	 */
-	struct scsi_id_instance_data *scsi_id[SBP2SCSI_MAX_SCSI_IDS];
+	struct hpsb_highlevel *hl;
 
+	/* SCSI ID instance data (one for each sbp2 device instance possible) */
+	struct scsi_id_instance_data *scsi_id[SBP2SCSI_MAX_SCSI_IDS];
 };
 
 /*
@@ -474,21 +448,13 @@
 /*
  * Various utility prototypes
  */
-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,
-									  struct node_entry *ne, 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 int sbp2util_create_command_orb_pool(struct scsi_id_instance_data *scsi_id);
+static void sbp2util_remove_command_orb_pool(struct scsi_id_instance_data *scsi_id);
 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);
+							  void (*Current_done)(Scsi_Cmnd *));
 static void sbp2util_mark_command_completed(struct scsi_id_instance_data *scsi_id,
 		struct sbp2_command_info *command);
 
@@ -496,70 +462,48 @@
  * IEEE-1394 core driver related prototypes
  */
 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);
-int sbp2_init(void);
-void sbp2_cleanup(void);
 static int sbp2_probe(struct unit_directory *ud);
 static void sbp2_disconnect(struct unit_directory *ud);
 static void sbp2_update(struct unit_directory *ud);
+
 static int sbp2_start_device(struct sbp2scsi_host_info *hi, 
 			     struct unit_directory *ud);
-static void sbp2_remove_device(struct sbp2scsi_host_info *hi, 
-			       struct scsi_id_instance_data *scsi_id);
+static void sbp2_remove_device(struct scsi_id_instance_data *scsi_id);
 
 #ifdef CONFIG_IEEE1394_SBP2_PHYS_DMA
 static int sbp2_handle_physdma_write(struct hpsb_host *host, int nodeid, int destid, quadlet_t *data,
-                                     u64 addr, unsigned int length);
+                                     u64 addr, unsigned int length, u16 flags);
 static int sbp2_handle_physdma_read(struct hpsb_host *host, int nodeid, quadlet_t *data,
-                                    u64 addr, unsigned int length);
+                                    u64 addr, unsigned int length, u16 flags);
 #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_query_logins(struct scsi_id_instance_data *scsi_id);
+static int sbp2_login_device(struct scsi_id_instance_data *scsi_id);
+static int sbp2_reconnect_device(struct scsi_id_instance_data *scsi_id); 
+static int sbp2_logout_device(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,
+				    quadlet_t *data, u64 addr, unsigned int length, u16 flags);
+static int sbp2_agent_reset(struct scsi_id_instance_data *scsi_id, int wait);
+static int sbp2_create_command_orb(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, 
 				   unsigned char scsi_dir);
-static int sbp2_link_orb_command(struct sbp2scsi_host_info *hi, struct scsi_id_instance_data *scsi_id,
+static int sbp2_link_orb_command(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,
+static int sbp2_send_command(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(struct scsi_id_instance_data *scsi_id, unchar *cmd);
 static void sbp2_check_sbp2_response(struct scsi_id_instance_data *scsi_id, Scsi_Cmnd *SCpnt);
 static void sbp2_parse_unit_directory(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 int sbp2scsi_detect (Scsi_Host_Template *tpnt);
-static const char *sbp2scsi_info (struct Scsi_Host *host);
-void sbp2scsi_setup(char *str, int *ints);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,28)
-static int sbp2scsi_biosparam (Scsi_Disk *disk, kdev_t dev, int geom[]);
-#else
-static int sbp2scsi_biosparam (Scsi_Disk *disk, struct block_device *dev, int geom[]);
-#endif
-static int sbp2scsi_abort (Scsi_Cmnd *SCpnt); 
-static int sbp2scsi_reset (Scsi_Cmnd *SCpnt); 
-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 int sbp2_set_busy_timeout(struct scsi_id_instance_data *scsi_id);
+static int sbp2_max_speed_and_size(struct scsi_id_instance_data *scsi_id);
 
 #endif /* SBP2_H */
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