[mirror_ubuntu-jammy-kernel.git] / drivers / scsi / bnx2fc / bnx2fc.h

#ifndef _BNX2FC_H_
#define _BNX2FC_H_
/* bnx2fc.h: Broadcom NetXtreme II Linux FCoE offload driver.
 *
 * Copyright (c) 2008 - 2010 Broadcom Corporation
 *
 * 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.
 *
 * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/kthread.h>
#include <linux/crc32.h>
#include <linux/cpu.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/bitops.h>
#include <linux/log2.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/io.h>

#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_tcq.h>
#include <scsi/libfc.h>
#include <scsi/libfcoe.h>
#include <scsi/fc_encode.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc/fc_fip.h>
#include <scsi/fc/fc_fc2.h>
#include <scsi/fc_frame.h>
#include <scsi/fc/fc_fcoe.h>
#include <scsi/fc/fc_fcp.h>

#include "57xx_hsi_bnx2fc.h"
#include "bnx2fc_debug.h"
#include "../../net/cnic_if.h"
#include "bnx2fc_constants.h"

#define BNX2FC_NAME		"bnx2fc"
#define BNX2FC_VERSION		"1.0.1"

#define PFX			"bnx2fc: "

#define BNX2X_DOORBELL_PCI_BAR		2

#define BNX2FC_MAX_BD_LEN		0xffff
#define BNX2FC_BD_SPLIT_SZ		0x8000
#define BNX2FC_MAX_BDS_PER_CMD		256

#define BNX2FC_SQ_WQES_MAX	256

#define BNX2FC_SCSI_MAX_SQES	((3 * BNX2FC_SQ_WQES_MAX) / 8)
#define BNX2FC_TM_MAX_SQES	((BNX2FC_SQ_WQES_MAX) / 2)
#define BNX2FC_ELS_MAX_SQES	(BNX2FC_TM_MAX_SQES - 1)

#define BNX2FC_RQ_WQES_MAX	16
#define BNX2FC_CQ_WQES_MAX	(BNX2FC_SQ_WQES_MAX + BNX2FC_RQ_WQES_MAX)

#define BNX2FC_NUM_MAX_SESS	128
#define BNX2FC_NUM_MAX_SESS_LOG	(ilog2(BNX2FC_NUM_MAX_SESS))

#define BNX2FC_MAX_OUTSTANDING_CMNDS	2048
#define BNX2FC_CAN_QUEUE		BNX2FC_MAX_OUTSTANDING_CMNDS
#define BNX2FC_ELSTM_XIDS		BNX2FC_CAN_QUEUE
#define BNX2FC_MIN_PAYLOAD		256
#define BNX2FC_MAX_PAYLOAD		2048
#define BNX2FC_MFS			\
			(BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header))
#define BNX2FC_MINI_JUMBO_MTU		2500


#define BNX2FC_RQ_BUF_SZ		256
#define BNX2FC_RQ_BUF_LOG_SZ		(ilog2(BNX2FC_RQ_BUF_SZ))

#define BNX2FC_SQ_WQE_SIZE		(sizeof(struct fcoe_sqe))
#define BNX2FC_CQ_WQE_SIZE		(sizeof(struct fcoe_cqe))
#define BNX2FC_RQ_WQE_SIZE		(BNX2FC_RQ_BUF_SZ)
#define BNX2FC_XFERQ_WQE_SIZE		(sizeof(struct fcoe_xfrqe))
#define BNX2FC_CONFQ_WQE_SIZE		(sizeof(struct fcoe_confqe))
#define BNX2FC_5771X_DB_PAGE_SIZE	128

#define BNX2FC_MAX_TASKS		\
			     (BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS)
#define BNX2FC_TASK_SIZE		128
#define	BNX2FC_TASKS_PER_PAGE		(PAGE_SIZE/BNX2FC_TASK_SIZE)
#define BNX2FC_TASK_CTX_ARR_SZ		(BNX2FC_MAX_TASKS/BNX2FC_TASKS_PER_PAGE)

#define BNX2FC_MAX_ROWS_IN_HASH_TBL	8
#define BNX2FC_HASH_TBL_CHUNK_SIZE	(16 * 1024)

#define BNX2FC_MAX_SEQS			255

#define BNX2FC_READ			(1 << 1)
#define BNX2FC_WRITE			(1 << 0)

#define BNX2FC_MIN_XID			0
#define BNX2FC_MAX_XID			\
			(BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS - 1)
#define FCOE_MIN_XID			(BNX2FC_MAX_XID + 1)
#define FCOE_MAX_XID			(FCOE_MIN_XID + 4095)
#define BNX2FC_MAX_LUN			0xFFFF
#define BNX2FC_MAX_FCP_TGT		256
#define BNX2FC_MAX_CMD_LEN		16

#define BNX2FC_TM_TIMEOUT		60	/* secs */
#define BNX2FC_IO_TIMEOUT		20000UL	/* msecs */

#define BNX2FC_WAIT_CNT			120
#define BNX2FC_FW_TIMEOUT		(3 * HZ)
#define PORT_MAX			2

#define CMD_SCSI_STATUS(Cmnd)		((Cmnd)->SCp.Status)

/* FC FCP Status */
#define	FC_GOOD				0

#define BNX2FC_RNID_HBA			0x7

/* bnx2fc driver uses only one instance of fcoe_percpu_s */
extern struct fcoe_percpu_s bnx2fc_global;

extern struct workqueue_struct *bnx2fc_wq;

struct bnx2fc_percpu_s {
	struct task_struct *iothread;
	struct list_head work_list;
	spinlock_t fp_work_lock;
};


struct bnx2fc_hba {
	struct list_head link;
	struct cnic_dev *cnic;
	struct pci_dev *pcidev;
	struct net_device *netdev;
	struct net_device *phys_dev;
	unsigned long reg_with_cnic;
		#define BNX2FC_CNIC_REGISTERED           1
	struct packet_type fcoe_packet_type;
	struct packet_type fip_packet_type;
	struct bnx2fc_cmd_mgr *cmd_mgr;
	struct workqueue_struct *timer_work_queue;
	struct kref kref;
	spinlock_t hba_lock;
	struct mutex hba_mutex;
	unsigned long adapter_state;
		#define ADAPTER_STATE_UP		0
		#define ADAPTER_STATE_GOING_DOWN	1
		#define ADAPTER_STATE_LINK_DOWN		2
		#define ADAPTER_STATE_READY		3
	u32 flags;
	unsigned long init_done;
		#define BNX2FC_FW_INIT_DONE		0
		#define BNX2FC_CTLR_INIT_DONE		1
		#define BNX2FC_CREATE_DONE		2
	struct fcoe_ctlr ctlr;
	u8 vlan_enabled;
	int vlan_id;
	u32 next_conn_id;
	struct fcoe_task_ctx_entry **task_ctx;
	dma_addr_t *task_ctx_dma;
	struct regpair *task_ctx_bd_tbl;
	dma_addr_t task_ctx_bd_dma;

	int hash_tbl_segment_count;
	void **hash_tbl_segments;
	void *hash_tbl_pbl;
	dma_addr_t hash_tbl_pbl_dma;
	struct fcoe_t2_hash_table_entry *t2_hash_tbl;
	dma_addr_t t2_hash_tbl_dma;
	char *t2_hash_tbl_ptr;
	dma_addr_t t2_hash_tbl_ptr_dma;

	char *dummy_buffer;
	dma_addr_t dummy_buf_dma;

	struct fcoe_statistics_params *stats_buffer;
	dma_addr_t stats_buf_dma;

	/*
	 * PCI related info.
	 */
	u16 pci_did;
	u16 pci_vid;
	u16 pci_sdid;
	u16 pci_svid;
	u16 pci_func;
	u16 pci_devno;

	struct task_struct *l2_thread;

	/* linkdown handling */
	wait_queue_head_t shutdown_wait;
	int wait_for_link_down;

	/*destroy handling */
	struct timer_list destroy_timer;
	wait_queue_head_t destroy_wait;

	/* Active list of offloaded sessions */
	struct bnx2fc_rport *tgt_ofld_list[BNX2FC_NUM_MAX_SESS];
	int num_ofld_sess;

	/* statistics */
	struct completion stat_req_done;
};

#define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_hba, ctlr)

struct bnx2fc_cmd_mgr {
	struct bnx2fc_hba *hba;
	u16 next_idx;
	struct list_head *free_list;
	spinlock_t *free_list_lock;
	struct io_bdt **io_bdt_pool;
	struct bnx2fc_cmd **cmds;
};

struct bnx2fc_rport {
	struct fcoe_port *port;
	struct fc_rport *rport;
	struct fc_rport_priv *rdata;
	void __iomem *ctx_base;
#define DPM_TRIGER_TYPE		0x40
	u32 fcoe_conn_id;
	u32 context_id;
	u32 sid;

	unsigned long flags;
#define BNX2FC_FLAG_SESSION_READY	0x1
#define BNX2FC_FLAG_OFFLOADED		0x2
#define BNX2FC_FLAG_DISABLED		0x3
#define BNX2FC_FLAG_DESTROYED		0x4
#define BNX2FC_FLAG_OFLD_REQ_CMPL	0x5
#define BNX2FC_FLAG_DESTROY_CMPL	0x6
#define BNX2FC_FLAG_CTX_ALLOC_FAILURE	0x7
#define BNX2FC_FLAG_UPLD_REQ_COMPL	0x8
#define BNX2FC_FLAG_EXPL_LOGO		0x9

	u32 max_sqes;
	u32 max_rqes;
	u32 max_cqes;

	struct fcoe_sqe *sq;
	dma_addr_t sq_dma;
	u16 sq_prod_idx;
	u8 sq_curr_toggle_bit;
	u32 sq_mem_size;

	struct fcoe_cqe *cq;
	dma_addr_t cq_dma;
	u32 cq_cons_idx;
	u8 cq_curr_toggle_bit;
	u32 cq_mem_size;

	void *rq;
	dma_addr_t rq_dma;
	u32 rq_prod_idx;
	u32 rq_cons_idx;
	u32 rq_mem_size;

	void *rq_pbl;
	dma_addr_t rq_pbl_dma;
	u32 rq_pbl_size;

	struct fcoe_xfrqe *xferq;
	dma_addr_t xferq_dma;
	u32 xferq_mem_size;

	struct fcoe_confqe *confq;
	dma_addr_t confq_dma;
	u32 confq_mem_size;

	void *confq_pbl;
	dma_addr_t confq_pbl_dma;
	u32 confq_pbl_size;

	struct fcoe_conn_db *conn_db;
	dma_addr_t conn_db_dma;
	u32 conn_db_mem_size;

	struct fcoe_sqe *lcq;
	dma_addr_t lcq_dma;
	u32 lcq_mem_size;

	void *ofld_req[4];
	dma_addr_t ofld_req_dma[4];
	void *enbl_req;
	dma_addr_t enbl_req_dma;

	spinlock_t tgt_lock;
	spinlock_t cq_lock;
	atomic_t num_active_ios;
	u32 flush_in_prog;
	unsigned long work_time_slice;
	unsigned long timestamp;
	struct list_head free_task_list;
	struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1];
	atomic_t pi;
	atomic_t ci;
	struct list_head active_cmd_queue;
	struct list_head els_queue;
	struct list_head io_retire_queue;
	struct list_head active_tm_queue;

	struct timer_list ofld_timer;
	wait_queue_head_t ofld_wait;

	struct timer_list upld_timer;
	wait_queue_head_t upld_wait;
};

struct bnx2fc_mp_req {
	u8 tm_flags;

	u32 req_len;
	void *req_buf;
	dma_addr_t req_buf_dma;
	struct fcoe_bd_ctx *mp_req_bd;
	dma_addr_t mp_req_bd_dma;
	struct fc_frame_header req_fc_hdr;

	u32 resp_len;
	void *resp_buf;
	dma_addr_t resp_buf_dma;
	struct fcoe_bd_ctx *mp_resp_bd;
	dma_addr_t mp_resp_bd_dma;
	struct fc_frame_header resp_fc_hdr;
};

struct bnx2fc_els_cb_arg {
	struct bnx2fc_cmd *aborted_io_req;
	struct bnx2fc_cmd *io_req;
	u16 l2_oxid;
};

/* bnx2fc command structure */
struct bnx2fc_cmd {
	struct list_head link;
	u8 on_active_queue;
	u8 on_tmf_queue;
	u8 cmd_type;
#define BNX2FC_SCSI_CMD		1
#define BNX2FC_TASK_MGMT_CMD		2
#define BNX2FC_ABTS			3
#define BNX2FC_ELS			4
#define BNX2FC_CLEANUP			5
	u8 io_req_flags;
	struct kref refcount;
	struct fcoe_port *port;
	struct bnx2fc_rport *tgt;
	struct scsi_cmnd *sc_cmd;
	struct bnx2fc_cmd_mgr *cmd_mgr;
	struct bnx2fc_mp_req mp_req;
	void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg);
	struct bnx2fc_els_cb_arg *cb_arg;
	struct delayed_work timeout_work; /* timer for ULP timeouts */
	struct completion tm_done;
	int wait_for_comp;
	u16 xid;
	struct fcoe_task_ctx_entry *task;
	struct io_bdt *bd_tbl;
	struct fcp_rsp *rsp;
	size_t data_xfer_len;
	unsigned long req_flags;
#define BNX2FC_FLAG_ISSUE_RRQ		0x1
#define BNX2FC_FLAG_ISSUE_ABTS		0x2
#define BNX2FC_FLAG_ABTS_DONE		0x3
#define BNX2FC_FLAG_TM_COMPL		0x4
#define BNX2FC_FLAG_TM_TIMEOUT		0x5
#define BNX2FC_FLAG_IO_CLEANUP		0x6
#define BNX2FC_FLAG_RETIRE_OXID		0x7
#define	BNX2FC_FLAG_EH_ABORT		0x8
#define BNX2FC_FLAG_IO_COMPL		0x9
#define BNX2FC_FLAG_ELS_DONE		0xa
#define BNX2FC_FLAG_ELS_TIMEOUT		0xb
	u32 fcp_resid;
	u32 fcp_rsp_len;
	u32 fcp_sns_len;
	u8 cdb_status; /* SCSI IO status */
	u8 fcp_status; /* FCP IO status */
	u8 fcp_rsp_code;
	u8 scsi_comp_flags;
};

struct io_bdt {
	struct bnx2fc_cmd *io_req;
	struct fcoe_bd_ctx *bd_tbl;
	dma_addr_t bd_tbl_dma;
	u16 bd_valid;
};

struct bnx2fc_work {
	struct list_head list;
	struct bnx2fc_rport *tgt;
	u16 wqe;
};
struct bnx2fc_unsol_els {
	struct fc_lport *lport;
	struct fc_frame *fp;
	struct work_struct unsol_els_work;
};


struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type);
void bnx2fc_cmd_release(struct kref *ref);
int bnx2fc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd);
int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba);
int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba);
int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
					struct bnx2fc_rport *tgt);
int bnx2fc_send_session_disable_req(struct fcoe_port *port,
				    struct bnx2fc_rport *tgt);
int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
					struct bnx2fc_rport *tgt);
int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt);
void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
					u32 num_cqe);
int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba);
void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba);
int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba);
void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba);
struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba,
						u16 min_xid, u16 max_xid);
void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr);
void bnx2fc_get_link_state(struct bnx2fc_hba *hba);
char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items);
void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items);
int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen);
int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req);
int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp);
int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp);
int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp);
int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req);
int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req);
void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
			  unsigned int timer_msec);
int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req);
void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
			      struct fcoe_task_ctx_entry *task,
			      u16 orig_xid);
void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
			 struct fcoe_task_ctx_entry *task);
void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
			     struct fcoe_task_ctx_entry *task);
void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid);
void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt);
int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd);
int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd);
int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
void bnx2fc_rport_event_handler(struct fc_lport *lport,
				struct fc_rport_priv *rport,
				enum fc_rport_event event);
void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
				   struct fcoe_task_ctx_entry *task,
				   u8 num_rq);
void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
			       struct fcoe_task_ctx_entry *task,
			       u8 num_rq);
void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
			       struct fcoe_task_ctx_entry *task,
			       u8 num_rq);
void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
			     struct fcoe_task_ctx_entry *task,
			     u8 num_rq);
void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
			      struct fcoe_task_ctx_entry *task,
			      u8 num_rq);
void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
			   struct fcp_cmnd *fcp_cmnd);


void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt);
struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did,
				      struct fc_frame *fp, unsigned int op,
				      void (*resp)(struct fc_seq *,
						   struct fc_frame *,
						   void *),
				      void *arg, u32 timeout);
int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt);
void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe);
struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
					     u32 port_id);
void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
				   unsigned char *buf,
				   u32 frame_len, u16 l2_oxid);
int bnx2fc_send_stat_req(struct bnx2fc_hba *hba);

#endif
Commit	Line	Data
853e2bd2 BG	1	#ifndef _BNX2FC_H_
	2	#define _BNX2FC_H_
	3	/* bnx2fc.h: Broadcom NetXtreme II Linux FCoE offload driver.
	4	*
	5	* Copyright (c) 2008 - 2010 Broadcom Corporation
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation.
	10	*
	11	* Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/moduleparam.h>
	16	#include <linux/kernel.h>
	17	#include <linux/skbuff.h>
	18	#include <linux/netdevice.h>
	19	#include <linux/etherdevice.h>
	20	#include <linux/if_ether.h>
	21	#include <linux/if_vlan.h>
	22	#include <linux/kthread.h>
	23	#include <linux/crc32.h>
	24	#include <linux/cpu.h>
	25	#include <linux/types.h>
	26	#include <linux/list.h>
	27	#include <linux/delay.h>
	28	#include <linux/timer.h>
	29	#include <linux/errno.h>
	30	#include <linux/pci.h>
	31	#include <linux/init.h>
	32	#include <linux/dma-mapping.h>
	33	#include <linux/workqueue.h>
	34	#include <linux/mutex.h>
	35	#include <linux/spinlock.h>
	36	#include <linux/bitops.h>
	37	#include <linux/log2.h>
	38	#include <linux/interrupt.h>
	39	#include <linux/sched.h>
	40	#include <linux/io.h>
	41
	42	#include <scsi/scsi.h>
	43	#include <scsi/scsi_host.h>
	44	#include <scsi/scsi_device.h>
	45	#include <scsi/scsi_cmnd.h>
	46	#include <scsi/scsi_eh.h>
	47	#include <scsi/scsi_tcq.h>
	48	#include <scsi/libfc.h>
	49	#include <scsi/libfcoe.h>
	50	#include <scsi/fc_encode.h>
	51	#include <scsi/scsi_transport.h>
	52	#include <scsi/scsi_transport_fc.h>
	53	#include <scsi/fc/fc_fip.h>
	54	#include <scsi/fc/fc_fc2.h>
	55	#include <scsi/fc_frame.h>
	56	#include <scsi/fc/fc_fcoe.h>
	57	#include <scsi/fc/fc_fcp.h>
	58
	59	#include "57xx_hsi_bnx2fc.h"
	60	#include "bnx2fc_debug.h"
	61	#include "../../net/cnic_if.h"
	62	#include "bnx2fc_constants.h"
	63
	64	#define BNX2FC_NAME "bnx2fc"
d9f7f37b	65	#define BNX2FC_VERSION "1.0.1"
853e2bd2 BG	66
	67	#define PFX "bnx2fc: "
	68
	69	#define BNX2X_DOORBELL_PCI_BAR 2
	70
	71	#define BNX2FC_MAX_BD_LEN 0xffff
	72	#define BNX2FC_BD_SPLIT_SZ 0x8000
	73	#define BNX2FC_MAX_BDS_PER_CMD 256
	74
	75	#define BNX2FC_SQ_WQES_MAX 256
	76
	77	#define BNX2FC_SCSI_MAX_SQES ((3 * BNX2FC_SQ_WQES_MAX) / 8)
	78	#define BNX2FC_TM_MAX_SQES ((BNX2FC_SQ_WQES_MAX) / 2)
	79	#define BNX2FC_ELS_MAX_SQES (BNX2FC_TM_MAX_SQES - 1)
	80
	81	#define BNX2FC_RQ_WQES_MAX 16
	82	#define BNX2FC_CQ_WQES_MAX (BNX2FC_SQ_WQES_MAX + BNX2FC_RQ_WQES_MAX)
	83
	84	#define BNX2FC_NUM_MAX_SESS 128
	85	#define BNX2FC_NUM_MAX_SESS_LOG (ilog2(BNX2FC_NUM_MAX_SESS))
	86
0ea5c275 BG	87	#define BNX2FC_MAX_OUTSTANDING_CMNDS 2048
	88	#define BNX2FC_CAN_QUEUE BNX2FC_MAX_OUTSTANDING_CMNDS
	89	#define BNX2FC_ELSTM_XIDS BNX2FC_CAN_QUEUE
853e2bd2 BG	90	#define BNX2FC_MIN_PAYLOAD 256
853e2bd2 BG	91	#define BNX2FC_MAX_PAYLOAD 2048
1294bfe6 BG	92	#define BNX2FC_MFS \
	93	(BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header))
	94	#define BNX2FC_MINI_JUMBO_MTU 2500
	95
853e2bd2 BG	96
	97	#define BNX2FC_RQ_BUF_SZ 256
	98	#define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ))
	99
	100	#define BNX2FC_SQ_WQE_SIZE (sizeof(struct fcoe_sqe))
	101	#define BNX2FC_CQ_WQE_SIZE (sizeof(struct fcoe_cqe))
	102	#define BNX2FC_RQ_WQE_SIZE (BNX2FC_RQ_BUF_SZ)
	103	#define BNX2FC_XFERQ_WQE_SIZE (sizeof(struct fcoe_xfrqe))
	104	#define BNX2FC_CONFQ_WQE_SIZE (sizeof(struct fcoe_confqe))
	105	#define BNX2FC_5771X_DB_PAGE_SIZE 128
	106
0ea5c275 BG	107	#define BNX2FC_MAX_TASKS \
0ea5c275 BG	108	(BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS)
853e2bd2 BG	109	#define BNX2FC_TASK_SIZE 128
	110	#define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE)
	111	#define BNX2FC_TASK_CTX_ARR_SZ (BNX2FC_MAX_TASKS/BNX2FC_TASKS_PER_PAGE)
	112
	113	#define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
	114	#define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)
	115
	116	#define BNX2FC_MAX_SEQS 255
	117
	118	#define BNX2FC_READ (1 << 1)
	119	#define BNX2FC_WRITE (1 << 0)
	120
	121	#define BNX2FC_MIN_XID 0
0ea5c275 BG	122	#define BNX2FC_MAX_XID \
	123	(BNX2FC_MAX_OUTSTANDING_CMNDS + BNX2FC_ELSTM_XIDS - 1)
	124	#define FCOE_MIN_XID (BNX2FC_MAX_XID + 1)
	125	#define FCOE_MAX_XID (FCOE_MIN_XID + 4095)
853e2bd2 BG	126	#define BNX2FC_MAX_LUN 0xFFFF
	127	#define BNX2FC_MAX_FCP_TGT 256
	128	#define BNX2FC_MAX_CMD_LEN 16
	129
	130	#define BNX2FC_TM_TIMEOUT 60 /* secs */
	131	#define BNX2FC_IO_TIMEOUT 20000UL /* msecs */
	132
	133	#define BNX2FC_WAIT_CNT 120
	134	#define BNX2FC_FW_TIMEOUT (3 * HZ)
853e2bd2 BG	135	#define PORT_MAX 2
	136
	137	#define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
	138
	139	/* FC FCP Status */
	140	#define FC_GOOD 0
	141
	142	#define BNX2FC_RNID_HBA 0x7
	143
	144	/* bnx2fc driver uses only one instance of fcoe_percpu_s */
	145	extern struct fcoe_percpu_s bnx2fc_global;
	146
	147	extern struct workqueue_struct *bnx2fc_wq;
	148
	149	struct bnx2fc_percpu_s {
	150	struct task_struct *iothread;
	151	struct list_head work_list;
	152	spinlock_t fp_work_lock;
	153	};
	154
	155
	156	struct bnx2fc_hba {
	157	struct list_head link;
	158	struct cnic_dev *cnic;
	159	struct pci_dev *pcidev;
	160	struct net_device *netdev;
	161	struct net_device *phys_dev;
	162	unsigned long reg_with_cnic;
	163	#define BNX2FC_CNIC_REGISTERED 1
	164	struct packet_type fcoe_packet_type;
	165	struct packet_type fip_packet_type;
	166	struct bnx2fc_cmd_mgr *cmd_mgr;
	167	struct workqueue_struct *timer_work_queue;
	168	struct kref kref;
	169	spinlock_t hba_lock;
	170	struct mutex hba_mutex;
	171	unsigned long adapter_state;
	172	#define ADAPTER_STATE_UP 0
	173	#define ADAPTER_STATE_GOING_DOWN 1
	174	#define ADAPTER_STATE_LINK_DOWN 2
	175	#define ADAPTER_STATE_READY 3
	176	u32 flags;
	177	unsigned long init_done;
	178	#define BNX2FC_FW_INIT_DONE 0
	179	#define BNX2FC_CTLR_INIT_DONE 1
	180	#define BNX2FC_CREATE_DONE 2
	181	struct fcoe_ctlr ctlr;
	182	u8 vlan_enabled;
	183	int vlan_id;
	184	u32 next_conn_id;
	185	struct fcoe_task_ctx_entry **task_ctx;
	186	dma_addr_t *task_ctx_dma;
	187	struct regpair *task_ctx_bd_tbl;
	188	dma_addr_t task_ctx_bd_dma;
	189
	190	int hash_tbl_segment_count;
	191	void **hash_tbl_segments;
	192	void *hash_tbl_pbl;
	193	dma_addr_t hash_tbl_pbl_dma;
	194	struct fcoe_t2_hash_table_entry *t2_hash_tbl;
	195	dma_addr_t t2_hash_tbl_dma;
	196	char *t2_hash_tbl_ptr;
	197	dma_addr_t t2_hash_tbl_ptr_dma;
	198
199	char *dummy_buffer;
200	dma_addr_t dummy_buf_dma;
201
202	struct fcoe_statistics_params *stats_buffer;
203	dma_addr_t stats_buf_dma;
204
205	/*
206	* PCI related info.
207	*/
208	u16 pci_did;
209	u16 pci_vid;
210	u16 pci_sdid;
211	u16 pci_svid;
212	u16 pci_func;
213	u16 pci_devno;
214
215	struct task_struct *l2_thread;
216
217	/* linkdown handling */
218	wait_queue_head_t shutdown_wait;
219	int wait_for_link_down;
220
221	/destroy handling /
222	struct timer_list destroy_timer;
223	wait_queue_head_t destroy_wait;
224
225	/* Active list of offloaded sessions */
226	struct bnx2fc_rport *tgt_ofld_list[BNX2FC_NUM_MAX_SESS];
227	int num_ofld_sess;
228
229	/* statistics */
230	struct completion stat_req_done;
231	};
232
233	#define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_hba, ctlr)
234
235	struct bnx2fc_cmd_mgr {
236	struct bnx2fc_hba *hba;
237	u16 next_idx;
238	struct list_head *free_list;
239	spinlock_t *free_list_lock;
240	struct io_bdt **io_bdt_pool;
241	struct bnx2fc_cmd **cmds;
242	};
243
244	struct bnx2fc_rport {
245	struct fcoe_port *port;
246	struct fc_rport *rport;
247	struct fc_rport_priv *rdata;
248	void __iomem *ctx_base;
249	#define DPM_TRIGER_TYPE 0x40
250	u32 fcoe_conn_id;
251	u32 context_id;
252	u32 sid;
253
254	unsigned long flags;
255	#define BNX2FC_FLAG_SESSION_READY 0x1
256	#define BNX2FC_FLAG_OFFLOADED 0x2
257	#define BNX2FC_FLAG_DISABLED 0x3
258	#define BNX2FC_FLAG_DESTROYED 0x4
259	#define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5
260	#define BNX2FC_FLAG_DESTROY_CMPL 0x6
261	#define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x7
262	#define BNX2FC_FLAG_UPLD_REQ_COMPL 0x8
263	#define BNX2FC_FLAG_EXPL_LOGO 0x9
264
265	u32 max_sqes;
266	u32 max_rqes;
267	u32 max_cqes;
268
269	struct fcoe_sqe *sq;
270	dma_addr_t sq_dma;
271	u16 sq_prod_idx;
272	u8 sq_curr_toggle_bit;
273	u32 sq_mem_size;
274
275	struct fcoe_cqe *cq;
276	dma_addr_t cq_dma;
277	u32 cq_cons_idx;
278	u8 cq_curr_toggle_bit;
279	u32 cq_mem_size;
280
281	void *rq;
282	dma_addr_t rq_dma;
283	u32 rq_prod_idx;
284	u32 rq_cons_idx;
285	u32 rq_mem_size;
286
287	void *rq_pbl;
288	dma_addr_t rq_pbl_dma;
289	u32 rq_pbl_size;
290
291	struct fcoe_xfrqe *xferq;
292	dma_addr_t xferq_dma;
293	u32 xferq_mem_size;
294
295	struct fcoe_confqe *confq;
296	dma_addr_t confq_dma;
297	u32 confq_mem_size;
298
299	void *confq_pbl;
300	dma_addr_t confq_pbl_dma;
301	u32 confq_pbl_size;
302
303	struct fcoe_conn_db *conn_db;
304	dma_addr_t conn_db_dma;
305	u32 conn_db_mem_size;
306
307	struct fcoe_sqe *lcq;
308	dma_addr_t lcq_dma;
309	u32 lcq_mem_size;
310
311	void *ofld_req[4];
312	dma_addr_t ofld_req_dma[4];
313	void *enbl_req;
314	dma_addr_t enbl_req_dma;
315
316	spinlock_t tgt_lock;
317	spinlock_t cq_lock;
318	atomic_t num_active_ios;
319	u32 flush_in_prog;
320	unsigned long work_time_slice;
321	unsigned long timestamp;
322	struct list_head free_task_list;
323	struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1];
324	atomic_t pi;
325	atomic_t ci;
326	struct list_head active_cmd_queue;
327	struct list_head els_queue;
328	struct list_head io_retire_queue;
329	struct list_head active_tm_queue;
330
331	struct timer_list ofld_timer;
332	wait_queue_head_t ofld_wait;
333
334	struct timer_list upld_timer;
335	wait_queue_head_t upld_wait;
336	};
337
338	struct bnx2fc_mp_req {
339	u8 tm_flags;
340
341	u32 req_len;
342	void *req_buf;
343	dma_addr_t req_buf_dma;
344	struct fcoe_bd_ctx *mp_req_bd;
345	dma_addr_t mp_req_bd_dma;
346	struct fc_frame_header req_fc_hdr;
347
348	u32 resp_len;
349	void *resp_buf;
350	dma_addr_t resp_buf_dma;
351	struct fcoe_bd_ctx *mp_resp_bd;
352	dma_addr_t mp_resp_bd_dma;
353	struct fc_frame_header resp_fc_hdr;
354	};
355
356	struct bnx2fc_els_cb_arg {
357	struct bnx2fc_cmd *aborted_io_req;
358	struct bnx2fc_cmd *io_req;
359	u16 l2_oxid;
360	};
361
362	/* bnx2fc command structure */
363	struct bnx2fc_cmd {
364	struct list_head link;
365	u8 on_active_queue;
366	u8 on_tmf_queue;
367	u8 cmd_type;
368	#define BNX2FC_SCSI_CMD 1
369	#define BNX2FC_TASK_MGMT_CMD 2
370	#define BNX2FC_ABTS 3
371	#define BNX2FC_ELS 4
372	#define BNX2FC_CLEANUP 5
373	u8 io_req_flags;
374	struct kref refcount;
375	struct fcoe_port *port;
376	struct bnx2fc_rport *tgt;
377	struct scsi_cmnd *sc_cmd;
378	struct bnx2fc_cmd_mgr *cmd_mgr;
379	struct bnx2fc_mp_req mp_req;
380	void (cb_func)(struct bnx2fc_els_cb_arg cb_arg);
381	struct bnx2fc_els_cb_arg *cb_arg;
382	struct delayed_work timeout_work; /* timer for ULP timeouts */
383	struct completion tm_done;
384	int wait_for_comp;
385	u16 xid;
386	struct fcoe_task_ctx_entry *task;
387	struct io_bdt *bd_tbl;
388	struct fcp_rsp *rsp;
389	size_t data_xfer_len;
390	unsigned long req_flags;
391	#define BNX2FC_FLAG_ISSUE_RRQ 0x1
392	#define BNX2FC_FLAG_ISSUE_ABTS 0x2
393	#define BNX2FC_FLAG_ABTS_DONE 0x3
394	#define BNX2FC_FLAG_TM_COMPL 0x4
395	#define BNX2FC_FLAG_TM_TIMEOUT 0x5
396	#define BNX2FC_FLAG_IO_CLEANUP 0x6
397	#define BNX2FC_FLAG_RETIRE_OXID 0x7
398	#define BNX2FC_FLAG_EH_ABORT 0x8
399	#define BNX2FC_FLAG_IO_COMPL 0x9
400	#define BNX2FC_FLAG_ELS_DONE 0xa
401	#define BNX2FC_FLAG_ELS_TIMEOUT 0xb
402	u32 fcp_resid;
403	u32 fcp_rsp_len;
404	u32 fcp_sns_len;
405	u8 cdb_status; /* SCSI IO status */
406	u8 fcp_status; /* FCP IO status */
407	u8 fcp_rsp_code;
408	u8 scsi_comp_flags;
409	};
410
411	struct io_bdt {
412	struct bnx2fc_cmd *io_req;
413	struct fcoe_bd_ctx *bd_tbl;
414	dma_addr_t bd_tbl_dma;
415	u16 bd_valid;
416	};
417
418	struct bnx2fc_work {
419	struct list_head list;
420	struct bnx2fc_rport *tgt;
421	u16 wqe;
422	};
423	struct bnx2fc_unsol_els {
424	struct fc_lport *lport;
425	struct fc_frame *fp;
426	struct work_struct unsol_els_work;
427	};
428
429
430
431	struct bnx2fc_cmd bnx2fc_elstm_alloc(struct bnx2fc_rport tgt, int type);
432	void bnx2fc_cmd_release(struct kref *ref);
433	int bnx2fc_queuecommand(struct Scsi_Host host, struct scsi_cmnd sc_cmd);
434	int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba);
435	int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba);
436	int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
437	struct bnx2fc_rport *tgt);
438	int bnx2fc_send_session_disable_req(struct fcoe_port *port,
439	struct bnx2fc_rport *tgt);
440	int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
441	struct bnx2fc_rport *tgt);
442	int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt);
443	void bnx2fc_indicate_kcqe(void context, struct kcqe kcq[],
444	u32 num_cqe);
445	int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba);
446	void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba);
447	int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba);
448	void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba);
449	struct bnx2fc_cmd_mgr bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba hba,
450	u16 min_xid, u16 max_xid);
451	void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr);
452	void bnx2fc_get_link_state(struct bnx2fc_hba *hba);
453	char bnx2fc_get_next_rqe(struct bnx2fc_rport tgt, u8 num_items);
454	void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items);
455	int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen);
456	int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req);
457	int bnx2fc_send_adisc(struct bnx2fc_rport tgt, struct fc_frame fp);
458	int bnx2fc_send_logo(struct bnx2fc_rport tgt, struct fc_frame fp);
459	int bnx2fc_send_rls(struct bnx2fc_rport tgt, struct fc_frame fp);
460	int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req);
461	int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req);
462	void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
463	unsigned int timer_msec);
464	int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req);
465	void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
466	struct fcoe_task_ctx_entry *task,
467	u16 orig_xid);
468	void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
469	struct fcoe_task_ctx_entry *task);
470	void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
471	struct fcoe_task_ctx_entry *task);
472	void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid);
473	void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt);
474	int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd);
475	int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
476	int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd);
477	int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
478	void bnx2fc_rport_event_handler(struct fc_lport *lport,
479	struct fc_rport_priv *rport,
480	enum fc_rport_event event);
481	void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
482	struct fcoe_task_ctx_entry *task,
483	u8 num_rq);
484	void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
485	struct fcoe_task_ctx_entry *task,
486	u8 num_rq);
487	void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
488	struct fcoe_task_ctx_entry *task,
489	u8 num_rq);
490	void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
491	struct fcoe_task_ctx_entry *task,
492	u8 num_rq);
493	void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
494	struct fcoe_task_ctx_entry *task,
495	u8 num_rq);
496	void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
497	struct fcp_cmnd *fcp_cmnd);
498
499
500
501	void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt);
502	struct fc_seq bnx2fc_elsct_send(struct fc_lport lport, u32 did,
503	struct fc_frame *fp, unsigned int op,
504	void (resp)(struct fc_seq ,
505	struct fc_frame *,
506	void *),
507	void *arg, u32 timeout);
508	int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt);
509	void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe);
510	struct bnx2fc_rport bnx2fc_tgt_lookup(struct fcoe_port port,
511	u32 port_id);
512	void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
513	unsigned char *buf,
514	u32 frame_len, u16 l2_oxid);
515	int bnx2fc_send_stat_req(struct bnx2fc_hba *hba);
516
517	#endif