[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_sli.h

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2004-2015 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.com                                                  *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
 *******************************************************************/

/* forward declaration for LPFC_IOCB_t's use */
struct lpfc_hba;
struct lpfc_vport;

/* Define the context types that SLI handles for abort and sums. */
typedef enum _lpfc_ctx_cmd {
	LPFC_CTX_LUN,
	LPFC_CTX_TGT,
	LPFC_CTX_HOST
} lpfc_ctx_cmd;

struct lpfc_cq_event {
	struct list_head list;
	union {
		struct lpfc_mcqe		mcqe_cmpl;
		struct lpfc_acqe_link		acqe_link;
		struct lpfc_acqe_fip		acqe_fip;
		struct lpfc_acqe_dcbx		acqe_dcbx;
		struct lpfc_acqe_grp5		acqe_grp5;
		struct lpfc_acqe_fc_la		acqe_fc;
		struct lpfc_acqe_sli		acqe_sli;
		struct lpfc_rcqe		rcqe_cmpl;
		struct sli4_wcqe_xri_aborted	wcqe_axri;
		struct lpfc_wcqe_complete	wcqe_cmpl;
	} cqe;
};

/* This structure is used to handle IOCB requests / responses */
struct lpfc_iocbq {
	/* lpfc_iocbqs are used in double linked lists */
	struct list_head list;
	struct list_head clist;
	struct list_head dlist;
	uint16_t iotag;         /* pre-assigned IO tag */
	uint16_t sli4_lxritag;  /* logical pre-assigned XRI. */
	uint16_t sli4_xritag;   /* pre-assigned XRI, (OXID) tag. */
	struct lpfc_cq_event cq_event;

	IOCB_t iocb;		/* IOCB cmd */
	uint8_t retry;		/* retry counter for IOCB cmd - if needed */
	uint32_t iocb_flag;
#define LPFC_IO_LIBDFC		1	/* libdfc iocb */
#define LPFC_IO_WAKE		2	/* Synchronous I/O completed */
#define LPFC_IO_WAKE_TMO	LPFC_IO_WAKE /* Synchronous I/O timed out */
#define LPFC_IO_FCP		4	/* FCP command -- iocbq in scsi_buf */
#define LPFC_DRIVER_ABORTED	8	/* driver aborted this request */
#define LPFC_IO_FABRIC		0x10	/* Iocb send using fabric scheduler */
#define LPFC_DELAY_MEM_FREE	0x20    /* Defer free'ing of FC data */
#define LPFC_EXCHANGE_BUSY	0x40    /* SLI4 hba reported XB in response */
#define LPFC_USE_FCPWQIDX	0x80    /* Submit to specified FCPWQ index */
#define DSS_SECURITY_OP		0x100	/* security IO */
#define LPFC_IO_ON_TXCMPLQ	0x200	/* The IO is still on the TXCMPLQ */
#define LPFC_IO_DIF_PASS	0x400	/* T10 DIF IO pass-thru prot */
#define LPFC_IO_DIF_STRIP	0x800	/* T10 DIF IO strip prot */
#define LPFC_IO_DIF_INSERT	0x1000	/* T10 DIF IO insert prot */
#define LPFC_IO_CMD_OUTSTANDING	0x2000 /* timeout handler abort window */

#define LPFC_FIP_ELS_ID_MASK	0xc000	/* ELS_ID range 0-3, non-shifted mask */
#define LPFC_FIP_ELS_ID_SHIFT	14

#define LPFC_IO_OAS		0x10000 /* OAS FCP IO */
#define LPFC_IO_FOF		0x20000 /* FOF FCP IO */
#define LPFC_IO_LOOPBACK	0x40000 /* Loopback IO */

	uint32_t drvrTimeout;	/* driver timeout in seconds */
	uint32_t fcp_wqidx;	/* index to FCP work queue */
	struct lpfc_vport *vport;/* virtual port pointer */
	void *context1;		/* caller context information */
	void *context2;		/* caller context information */
	void *context3;		/* caller context information */
	union {
		wait_queue_head_t    *wait_queue;
		struct lpfc_iocbq    *rsp_iocb;
		struct lpfcMboxq     *mbox;
		struct lpfc_nodelist *ndlp;
		struct lpfc_node_rrq *rrq;
	} context_un;

	void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
			   struct lpfc_iocbq *);
	void (*wait_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
			   struct lpfc_iocbq *);
	void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
			   struct lpfc_iocbq *);
};

#define SLI_IOCB_RET_IOCB      1	/* Return IOCB if cmd ring full */

#define IOCB_SUCCESS        0
#define IOCB_BUSY           1
#define IOCB_ERROR          2
#define IOCB_TIMEDOUT       3

#define LPFC_MBX_WAKE		1
#define LPFC_MBX_IMED_UNREG	2

typedef struct lpfcMboxq {
	/* MBOXQs are used in single linked lists */
	struct list_head list;	/* ptr to next mailbox command */
	union {
		MAILBOX_t mb;		/* Mailbox cmd */
		struct lpfc_mqe mqe;
	} u;
	struct lpfc_vport *vport;/* virtual port pointer */
	void *context1;		/* caller context information */
	void *context2;		/* caller context information */

	void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
	uint8_t mbox_flag;
	uint16_t in_ext_byte_len;
	uint16_t out_ext_byte_len;
	uint8_t  mbox_offset_word;
	struct lpfc_mcqe mcqe;
	struct lpfc_mbx_nembed_sge_virt *sge_array;
} LPFC_MBOXQ_t;

#define MBX_POLL        1	/* poll mailbox till command done, then
				   return */
#define MBX_NOWAIT      2	/* issue command then return immediately */

#define LPFC_MAX_RING_MASK  5	/* max num of rctl/type masks allowed per
				   ring */
#define LPFC_SLI3_MAX_RING  4	/* Max num of SLI3 rings used by driver.
				   For SLI4, an additional ring for each
				   FCP WQ will be allocated.  */

struct lpfc_sli_ring;

struct lpfc_sli_ring_mask {
	uint8_t profile;	/* profile associated with ring */
	uint8_t rctl;	/* rctl / type pair configured for ring */
	uint8_t type;	/* rctl / type pair configured for ring */
	uint8_t rsvd;
	/* rcv'd unsol event */
	void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
					 struct lpfc_sli_ring *,
					 struct lpfc_iocbq *);
};


/* Structure used to hold SLI statistical counters and info */
struct lpfc_sli_ring_stat {
	uint64_t iocb_event;	 /* IOCB event counters */
	uint64_t iocb_cmd;	 /* IOCB cmd issued */
	uint64_t iocb_rsp;	 /* IOCB rsp received */
	uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
	uint64_t iocb_cmd_full;	 /* IOCB cmd ring full */
	uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
	uint64_t iocb_rsp_full;	 /* IOCB rsp ring full */
};

struct lpfc_sli3_ring {
	uint32_t local_getidx;  /* last available cmd index (from cmdGetInx) */
	uint32_t next_cmdidx;   /* next_cmd index */
	uint32_t rspidx;	/* current index in response ring */
	uint32_t cmdidx;	/* current index in command ring */
	uint16_t numCiocb;	/* number of command iocb's per ring */
	uint16_t numRiocb;	/* number of rsp iocb's per ring */
	uint16_t sizeCiocb;	/* Size of command iocb's in this ring */
	uint16_t sizeRiocb;	/* Size of response iocb's in this ring */
	uint32_t *cmdringaddr;	/* virtual address for cmd rings */
	uint32_t *rspringaddr;	/* virtual address for rsp rings */
};

struct lpfc_sli4_ring {
	struct lpfc_queue *wqp;	/* Pointer to associated WQ */
};


/* Structure used to hold SLI ring information */
struct lpfc_sli_ring {
	uint16_t flag;		/* ring flags */
#define LPFC_DEFERRED_RING_EVENT 0x001	/* Deferred processing a ring event */
#define LPFC_CALL_RING_AVAILABLE 0x002	/* indicates cmd was full */
#define LPFC_STOP_IOCB_EVENT     0x020	/* Stop processing IOCB cmds event */
	uint16_t abtsiotag;	/* tracks next iotag to use for ABTS */

	uint8_t rsvd;
	uint8_t ringno;		/* ring number */

	spinlock_t ring_lock;	/* lock for issuing commands */

	uint32_t fast_iotag;	/* max fastlookup based iotag           */
	uint32_t iotag_ctr;	/* keeps track of the next iotag to use */
	uint32_t iotag_max;	/* max iotag value to use               */
	struct list_head txq;
	uint16_t txq_cnt;	/* current length of queue */
	uint16_t txq_max;	/* max length */
	struct list_head txcmplq;
	uint16_t txcmplq_cnt;	/* current length of queue */
	uint16_t txcmplq_max;	/* max length */
	uint32_t missbufcnt;	/* keep track of buffers to post */
	struct list_head postbufq;
	uint16_t postbufq_cnt;	/* current length of queue */
	uint16_t postbufq_max;	/* max length */
	struct list_head iocb_continueq;
	uint16_t iocb_continueq_cnt;	/* current length of queue */
	uint16_t iocb_continueq_max;	/* max length */
	struct list_head iocb_continue_saveq;

	struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
	uint32_t num_mask;	/* number of mask entries in prt array */
	void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *,
		struct lpfc_sli_ring *, struct lpfc_iocbq *);

	struct lpfc_sli_ring_stat stats;	/* SLI statistical info */

	/* cmd ring available */
	void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
					struct lpfc_sli_ring *);
	union {
		struct lpfc_sli3_ring sli3;
		struct lpfc_sli4_ring sli4;
	} sli;
};

/* Structure used for configuring rings to a specific profile or rctl / type */
struct lpfc_hbq_init {
	uint32_t rn;		/* Receive buffer notification */
	uint32_t entry_count;	/* max # of entries in HBQ */
	uint32_t headerLen;	/* 0 if not profile 4 or 5 */
	uint32_t logEntry;	/* Set to 1 if this HBQ used for LogEntry */
	uint32_t profile;	/* Selection profile 0=all, 7=logentry */
	uint32_t ring_mask;	/* Binds HBQ to a ring e.g. Ring0=b0001,
				 * ring2=b0100 */
	uint32_t hbq_index;	/* index of this hbq in ring .HBQs[] */

	uint32_t seqlenoff;
	uint32_t maxlen;
	uint32_t seqlenbcnt;
	uint32_t cmdcodeoff;
	uint32_t cmdmatch[8];
	uint32_t mask_count;	/* number of mask entries in prt array */
	struct hbq_mask hbqMasks[6];

	/* Non-config rings fields to keep track of buffer allocations */
	uint32_t buffer_count;	/* number of buffers allocated */
	uint32_t init_count;	/* number to allocate when initialized */
	uint32_t add_count;	/* number to allocate when starved */
} ;

/* Structure used to hold SLI statistical counters and info */
struct lpfc_sli_stat {
	uint64_t mbox_stat_err;  /* Mbox cmds completed status error */
	uint64_t mbox_cmd;       /* Mailbox commands issued */
	uint64_t sli_intr;       /* Count of Host Attention interrupts */
	uint64_t sli_prev_intr;  /* Previous cnt of Host Attention interrupts */
	uint64_t sli_ips;        /* Host Attention interrupts per sec */
	uint32_t err_attn_event; /* Error Attn event counters */
	uint32_t link_event;     /* Link event counters */
	uint32_t mbox_event;     /* Mailbox event counters */
	uint32_t mbox_busy;	 /* Mailbox cmd busy */
};

/* Structure to store link status values when port stats are reset */
struct lpfc_lnk_stat {
	uint32_t link_failure_count;
	uint32_t loss_of_sync_count;
	uint32_t loss_of_signal_count;
	uint32_t prim_seq_protocol_err_count;
	uint32_t invalid_tx_word_count;
	uint32_t invalid_crc_count;
	uint32_t error_frames;
	uint32_t link_events;
};

/* Structure used to hold SLI information */
struct lpfc_sli {
	uint32_t num_rings;
	uint32_t sli_flag;

	/* Additional sli_flags */
#define LPFC_SLI_MBOX_ACTIVE      0x100	/* HBA mailbox is currently active */
#define LPFC_SLI_ACTIVE           0x200	/* SLI in firmware is active */
#define LPFC_PROCESS_LA           0x400	/* Able to process link attention */
#define LPFC_BLOCK_MGMT_IO        0x800	/* Don't allow mgmt mbx or iocb cmds */
#define LPFC_MENLO_MAINT          0x1000 /* need for menl fw download */
#define LPFC_SLI_ASYNC_MBX_BLK    0x2000 /* Async mailbox is blocked */

	struct lpfc_sli_ring *ring;
	int fcp_ring;		/* ring used for FCP initiator commands */
	int next_ring;

	int extra_ring;		/* extra ring used for other protocols */

	struct lpfc_sli_stat slistat;	/* SLI statistical info */
	struct list_head mboxq;
	uint16_t mboxq_cnt;	/* current length of queue */
	uint16_t mboxq_max;	/* max length */
	LPFC_MBOXQ_t *mbox_active;	/* active mboxq information */
	struct list_head mboxq_cmpl;

	struct timer_list mbox_tmo;	/* Hold clk to timeout active mbox
					   cmd */

#define LPFC_IOCBQ_LOOKUP_INCREMENT  1024
	struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
	size_t iocbq_lookup_len;           /* current lengs of the array */
	uint16_t  last_iotag;              /* last allocated IOTAG */
	unsigned long  stats_start;        /* in seconds */
	struct lpfc_lnk_stat lnk_stat_offsets;
};

/* Timeout for normal outstanding mbox command (Seconds) */
#define LPFC_MBOX_TMO				30
/* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */
#define LPFC_MBOX_SLI4_CONFIG_TMO		60
/* Timeout for flash-based outstanding sli_config mbox command (Seconds) */
#define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO	300
/* Timeout for other flash-based outstanding mbox command (Seconds) */
#define LPFC_MBOX_TMO_FLASH_CMD			300
Commit	Line	Data
dea3101e	1	/*******************************************************************
dea3101e	2	* This file is part of the Emulex Linux Device Driver for *
c44ce173	3	* Fibre Channel Host Bus Adapters. *
f25e8e79	4	* Copyright (C) 2004-2015 Emulex. All rights reserved. *
c44ce173	5	* EMULEX and SLI are trademarks of Emulex. *
dea3101e	6	* www.emulex.com *
	7	* *
	8	* This program is free software; you can redistribute it and/or *
c44ce173 JSEC	9	* modify it under the terms of version 2 of the GNU General *
	10	* Public License as published by the Free Software Foundation. *
	11	* This program is distributed in the hope that it will be useful. *
	12	* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
	13	* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
	14	* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
	15	* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
	16	* TO BE LEGALLY INVALID. See the GNU General Public License for *
	17	* more details, a copy of which can be found in the file COPYING *
	18	* included with this package. *
dea3101e	19	*******************************************************************/
dea3101e	20
dea3101e	21	/* forward declaration for LPFC_IOCB_t's use */
dea3101e	22	struct lpfc_hba;
2e0fef85	23	struct lpfc_vport;
dea3101e	24
	25	/* Define the context types that SLI handles for abort and sums. */
	26	typedef enum _lpfc_ctx_cmd {
	27	LPFC_CTX_LUN,
	28	LPFC_CTX_TGT,
dea3101e	29	LPFC_CTX_HOST
	30	} lpfc_ctx_cmd;
	31
4d9ab994 JS	32	struct lpfc_cq_event {
	33	struct list_head list;
	34	union {
	35	struct lpfc_mcqe mcqe_cmpl;
	36	struct lpfc_acqe_link acqe_link;
70f3c073	37	struct lpfc_acqe_fip acqe_fip;
4d9ab994	38	struct lpfc_acqe_dcbx acqe_dcbx;
b19a061a	39	struct lpfc_acqe_grp5 acqe_grp5;
70f3c073 JS	40	struct lpfc_acqe_fc_la acqe_fc;
70f3c073 JS	41	struct lpfc_acqe_sli acqe_sli;
4d9ab994 JS	42	struct lpfc_rcqe rcqe_cmpl;
	43	struct sli4_wcqe_xri_aborted wcqe_axri;
	44	struct lpfc_wcqe_complete wcqe_cmpl;
	45	} cqe;
da0436e9 JS	46	};
da0436e9 JS	47
dea3101e	48	/* This structure is used to handle IOCB requests / responses */
	49	struct lpfc_iocbq {
	50	/* lpfc_iocbqs are used in double linked lists */
	51	struct list_head list;
9c2face6	52	struct list_head clist;
2a9bf3d0	53	struct list_head dlist;
604a3e30	54	uint16_t iotag; /* pre-assigned IO tag */
6d368e53	55	uint16_t sli4_lxritag; /* logical pre-assigned XRI. */
da0436e9	56	uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */
45ed1190	57	struct lpfc_cq_event cq_event;
604a3e30	58
dea3101e	59	IOCB_t iocb; /* IOCB cmd */
dea3101e	60	uint8_t retry; /* retry counter for IOCB cmd - if needed */
1b8d11ab	61	uint32_t iocb_flag;
07951076	62	#define LPFC_IO_LIBDFC 1 /* libdfc iocb */
5a0916b4 JS	63	#define LPFC_IO_WAKE 2 /* Synchronous I/O completed */
5a0916b4 JS	64	#define LPFC_IO_WAKE_TMO LPFC_IO_WAKE /* Synchronous I/O timed out */
07951076 JS	65	#define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */
07951076 JS	66	#define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */
92d7f7b0	67	#define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */
0ff10d46	68	#define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */
341af102 JS	69	#define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */
341af102 JS	70	#define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */
0f65ff68	71	#define DSS_SECURITY_OP 0x100 /* security IO */
4f2e66c6	72	#define LPFC_IO_ON_TXCMPLQ 0x200 /* The IO is still on the TXCMPLQ */
8012cc38 JS	73	#define LPFC_IO_DIF_PASS 0x400 /* T10 DIF IO pass-thru prot */
	74	#define LPFC_IO_DIF_STRIP 0x800 /* T10 DIF IO strip prot */
	75	#define LPFC_IO_DIF_INSERT 0x1000 /* T10 DIF IO insert prot */
1b8d11ab	76	#define LPFC_IO_CMD_OUTSTANDING 0x2000 /* timeout handler abort window */
341af102 JS	77
	78	#define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */
	79	#define LPFC_FIP_ELS_ID_SHIFT 14
dea3101e	80
1ba981fd	81	#define LPFC_IO_OAS 0x10000 /* OAS FCP IO */
9bd2bff5	82	#define LPFC_IO_FOF 0x20000 /* FOF FCP IO */
6c7cf486	83	#define LPFC_IO_LOOPBACK 0x40000 /* Loopback IO */
1ba981fd	84
dea3101e	85	uint32_t drvrTimeout; /* driver timeout in seconds */
5ffc266e	86	uint32_t fcp_wqidx; /* index to FCP work queue */
2e0fef85	87	struct lpfc_vport vport;/ virtual port pointer */
dea3101e	88	void context1; / caller context information */
	89	void context2; / caller context information */
	90	void context3; / caller context information */
	91	union {
51ef4c26 JS	92	wait_queue_head_t *wait_queue;
	93	struct lpfc_iocbq *rsp_iocb;
	94	struct lpfcMboxq *mbox;
	95	struct lpfc_nodelist *ndlp;
19ca7609	96	struct lpfc_node_rrq *rrq;
dea3101e	97	} context_un;
dea3101e	98
92d7f7b0 JS	99	void (fabric_iocb_cmpl) (struct lpfc_hba , struct lpfc_iocbq *,
92d7f7b0 JS	100	struct lpfc_iocbq *);
5a0916b4 JS	101	void (wait_iocb_cmpl) (struct lpfc_hba , struct lpfc_iocbq *,
5a0916b4 JS	102	struct lpfc_iocbq *);
dea3101e	103	void (iocb_cmpl) (struct lpfc_hba , struct lpfc_iocbq *,
dea3101e	104	struct lpfc_iocbq *);
dea3101e	105	};
	106
	107	#define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
dea3101e	108
	109	#define IOCB_SUCCESS 0
	110	#define IOCB_BUSY 1
	111	#define IOCB_ERROR 2
	112	#define IOCB_TIMEDOUT 3
	113
858c9f6c JS	114	#define LPFC_MBX_WAKE 1
858c9f6c JS	115	#define LPFC_MBX_IMED_UNREG 2
7054a606	116
dea3101e	117	typedef struct lpfcMboxq {
	118	/* MBOXQs are used in single linked lists */
	119	struct list_head list; /* ptr to next mailbox command */
da0436e9 JS	120	union {
	121	MAILBOX_t mb; /* Mailbox cmd */
	122	struct lpfc_mqe mqe;
	123	} u;
	124	struct lpfc_vport vport;/ virtual port pointer */
dea3101e	125	void context1; / caller context information */
	126	void context2; / caller context information */
	127
	128	void (mbox_cmpl) (struct lpfc_hba , struct lpfcMboxq *);
7054a606	129	uint8_t mbox_flag;
7a470277 JS	130	uint16_t in_ext_byte_len;
	131	uint16_t out_ext_byte_len;
	132	uint8_t mbox_offset_word;
da0436e9 JS	133	struct lpfc_mcqe mcqe;
da0436e9 JS	134	struct lpfc_mbx_nembed_sge_virt *sge_array;
dea3101e	135	} LPFC_MBOXQ_t;
	136
	137	#define MBX_POLL 1 /* poll mailbox till command done, then
	138	return */
	139	#define MBX_NOWAIT 2 /* issue command then return immediately */
dea3101e	140
6669f9bb	141	#define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per
dea3101e	142	ring */
2a76a283 JS	143	#define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver.
	144	For SLI4, an additional ring for each
	145	FCP WQ will be allocated. */
dea3101e	146
	147	struct lpfc_sli_ring;
	148
	149	struct lpfc_sli_ring_mask {
	150	uint8_t profile; /* profile associated with ring */
	151	uint8_t rctl; /* rctl / type pair configured for ring */
	152	uint8_t type; /* rctl / type pair configured for ring */
	153	uint8_t rsvd;
	154	/* rcv'd unsol event */
	155	void (lpfc_sli_rcv_unsol_event) (struct lpfc_hba ,
	156	struct lpfc_sli_ring *,
	157	struct lpfc_iocbq *);
	158	};
	159
	160
	161	/* Structure used to hold SLI statistical counters and info */
	162	struct lpfc_sli_ring_stat {
	163	uint64_t iocb_event; /* IOCB event counters */
	164	uint64_t iocb_cmd; /* IOCB cmd issued */
	165	uint64_t iocb_rsp; /* IOCB rsp received */
	166	uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
	167	uint64_t iocb_cmd_full; /* IOCB cmd ring full */
	168	uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
	169	uint64_t iocb_rsp_full; /* IOCB rsp ring full */
	170	};
	171
7e56aa25 JS	172	struct lpfc_sli3_ring {
	173	uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */
	174	uint32_t next_cmdidx; /* next_cmd index */
	175	uint32_t rspidx; /* current index in response ring */
	176	uint32_t cmdidx; /* current index in command ring */
	177	uint16_t numCiocb; /* number of command iocb's per ring */
	178	uint16_t numRiocb; /* number of rsp iocb's per ring */
	179	uint16_t sizeCiocb; /* Size of command iocb's in this ring */
	180	uint16_t sizeRiocb; /* Size of response iocb's in this ring */
	181	uint32_t cmdringaddr; / virtual address for cmd rings */
	182	uint32_t rspringaddr; / virtual address for rsp rings */
	183	};
	184
	185	struct lpfc_sli4_ring {
2a76a283	186	struct lpfc_queue wqp; / Pointer to associated WQ */
7e56aa25 JS	187	};
	188
	189
dea3101e	190	/* Structure used to hold SLI ring information */
	191	struct lpfc_sli_ring {
	192	uint16_t flag; /* ring flags */
	193	#define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
	194	#define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
dea3101e	195	#define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
dea3101e	196	uint16_t abtsiotag; /* tracks next iotag to use for ABTS */
dea3101e	197
dea3101e	198	uint8_t rsvd;
dea3101e	199	uint8_t ringno; /* ring number */
7e56aa25 JS	200
7e56aa25 JS	201	spinlock_t ring_lock; /* lock for issuing commands */
dea3101e	202
	203	uint32_t fast_iotag; /* max fastlookup based iotag */
	204	uint32_t iotag_ctr; /* keeps track of the next iotag to use */
	205	uint32_t iotag_max; /* max iotag value to use */
dea3101e	206	struct list_head txq;
	207	uint16_t txq_cnt; /* current length of queue */
	208	uint16_t txq_max; /* max length */
	209	struct list_head txcmplq;
	210	uint16_t txcmplq_cnt; /* current length of queue */
	211	uint16_t txcmplq_max; /* max length */
dea3101e	212	uint32_t missbufcnt; /* keep track of buffers to post */
	213	struct list_head postbufq;
	214	uint16_t postbufq_cnt; /* current length of queue */
	215	uint16_t postbufq_max; /* max length */
	216	struct list_head iocb_continueq;
	217	uint16_t iocb_continueq_cnt; /* current length of queue */
	218	uint16_t iocb_continueq_max; /* max length */
9c2face6	219	struct list_head iocb_continue_saveq;
dea3101e	220
	221	struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
	222	uint32_t num_mask; /* number of mask entries in prt array */
57127f15 JS	223	void (lpfc_sli_rcv_async_status) (struct lpfc_hba ,
57127f15 JS	224	struct lpfc_sli_ring , struct lpfc_iocbq );
dea3101e	225
	226	struct lpfc_sli_ring_stat stats; /* SLI statistical info */
	227
	228	/* cmd ring available */
	229	void (lpfc_sli_cmd_available) (struct lpfc_hba ,
	230	struct lpfc_sli_ring *);
7e56aa25 JS	231	union {
	232	struct lpfc_sli3_ring sli3;
	233	struct lpfc_sli4_ring sli4;
	234	} sli;
dea3101e	235	};
dea3101e	236
ed957684 JS	237	/* Structure used for configuring rings to a specific profile or rctl / type */
	238	struct lpfc_hbq_init {
	239	uint32_t rn; /* Receive buffer notification */
92d7f7b0	240	uint32_t entry_count; /* max # of entries in HBQ */
ed957684 JS	241	uint32_t headerLen; /* 0 if not profile 4 or 5 */
	242	uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */
	243	uint32_t profile; /* Selection profile 0=all, 7=logentry */
	244	uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001,
	245	* ring2=b0100 */
	246	uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */
	247
	248	uint32_t seqlenoff;
	249	uint32_t maxlen;
	250	uint32_t seqlenbcnt;
	251	uint32_t cmdcodeoff;
	252	uint32_t cmdmatch[8];
	253	uint32_t mask_count; /* number of mask entries in prt array */
	254	struct hbq_mask hbqMasks[6];
92d7f7b0 JS	255
	256	/* Non-config rings fields to keep track of buffer allocations */
	257	uint32_t buffer_count; /* number of buffers allocated */
	258	uint32_t init_count; /* number to allocate when initialized */
	259	uint32_t add_count; /* number to allocate when starved */
ed957684 JS	260	} ;
ed957684 JS	261
dea3101e	262	/* Structure used to hold SLI statistical counters and info */
	263	struct lpfc_sli_stat {
	264	uint64_t mbox_stat_err; /* Mbox cmds completed status error */
	265	uint64_t mbox_cmd; /* Mailbox commands issued */
	266	uint64_t sli_intr; /* Count of Host Attention interrupts */
aa6fbb75 JS	267	uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */
aa6fbb75 JS	268	uint64_t sli_ips; /* Host Attention interrupts per sec */
dea3101e	269	uint32_t err_attn_event; /* Error Attn event counters */
	270	uint32_t link_event; /* Link event counters */
	271	uint32_t mbox_event; /* Mailbox event counters */
	272	uint32_t mbox_busy; /* Mailbox cmd busy */
	273	};
	274
64ba8818 JS	275	/* Structure to store link status values when port stats are reset */
	276	struct lpfc_lnk_stat {
	277	uint32_t link_failure_count;
	278	uint32_t loss_of_sync_count;
	279	uint32_t loss_of_signal_count;
	280	uint32_t prim_seq_protocol_err_count;
	281	uint32_t invalid_tx_word_count;
	282	uint32_t invalid_crc_count;
	283	uint32_t error_frames;
	284	uint32_t link_events;
	285	};
	286
dea3101e	287	/* Structure used to hold SLI information */
	288	struct lpfc_sli {
	289	uint32_t num_rings;
	290	uint32_t sli_flag;
	291
	292	/* Additional sli_flags */
	293	#define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
f4b4c68f	294	#define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */
dea3101e	295	#define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
2e0fef85	296	#define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */
84774a4d	297	#define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */
da0436e9	298	#define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */
dea3101e	299
2a76a283	300	struct lpfc_sli_ring *ring;
dea3101e	301	int fcp_ring; /* ring used for FCP initiator commands */
	302	int next_ring;
	303
a4bc3379	304	int extra_ring; /* extra ring used for other protocols */
dea3101e	305
	306	struct lpfc_sli_stat slistat; /* SLI statistical info */
	307	struct list_head mboxq;
	308	uint16_t mboxq_cnt; /* current length of queue */
	309	uint16_t mboxq_max; /* max length */
	310	LPFC_MBOXQ_t mbox_active; / active mboxq information */
92d7f7b0	311	struct list_head mboxq_cmpl;
dea3101e	312
	313	struct timer_list mbox_tmo; /* Hold clk to timeout active mbox
	314	cmd */
	315
604a3e30 JB	316	#define LPFC_IOCBQ_LOOKUP_INCREMENT 1024
	317	struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
	318	size_t iocbq_lookup_len; /* current lengs of the array */
	319	uint16_t last_iotag; /* last allocated IOTAG */
64ba8818 JS	320	unsigned long stats_start; /* in seconds */
64ba8818 JS	321	struct lpfc_lnk_stat lnk_stat_offsets;
dea3101e	322	};
dea3101e	323
a183a15f JS	324	/* Timeout for normal outstanding mbox command (Seconds) */
	325	#define LPFC_MBOX_TMO 30
	326	/* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */
	327	#define LPFC_MBOX_SLI4_CONFIG_TMO 60
	328	/* Timeout for flash-based outstanding sli_config mbox command (Seconds) */
	329	#define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300
	330	/* Timeout for other flash-based outstanding mbox command (Seconds) */
	331	#define LPFC_MBOX_TMO_FLASH_CMD 300