lpfc: add Emulex FC driver version 8.0.28

From: 	James.Smart@Emulex.Com

Modified for kernel import and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 216 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h
new file mode 100644
index 0000000..abd9a8c
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_sli.h
@@ -0,0 +1,216 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for         *
+ * Enterprise Fibre Channel Host Bus Adapters.                     *
+ * Refer to the README file included with this package for         *
+ * driver version and adapter support.                             *
+ * Copyright (C) 2004 Emulex Corporation.                          *
+ * www.emulex.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, a copy of which    *
+ * can be found in the file COPYING included with this package.    *
+ *******************************************************************/
+
+/*
+ * $Id: lpfc_sli.h 1.42 2005/03/21 02:01:28EST sf_support Exp  $
+ */
+
+/* forward declaration for LPFC_IOCB_t's use */
+struct lpfc_hba;
+
+/* Define the context types that SLI handles for abort and sums. */
+typedef enum _lpfc_ctx_cmd {
+	LPFC_CTX_LUN,
+	LPFC_CTX_TGT,
+	LPFC_CTX_CTX,
+	LPFC_CTX_HOST
+} lpfc_ctx_cmd;
+
+/* This structure is used to handle IOCB requests / responses */
+struct lpfc_iocbq {
+	/* lpfc_iocbqs are used in double linked lists */
+	struct list_head list;
+	IOCB_t iocb;		/* IOCB cmd */
+	uint8_t retry;		/* retry counter for IOCB cmd - if needed */
+	uint8_t iocb_flag;
+#define LPFC_IO_POLL	1	/* Polling mode iocb */
+#define LPFC_IO_LIBDFC	2	/* libdfc iocb */
+#define LPFC_IO_WAIT	4
+#define LPFC_IO_HIPRI	8	/* High Priority Queue signal flag */
+
+	uint8_t abort_count;
+	uint8_t rsvd2;
+	uint32_t drvrTimeout;	/* driver timeout in seconds */
+	void *context1;		/* caller context information */
+	void *context2;		/* caller context information */
+	void *context3;		/* caller context information */
+	union {
+		wait_queue_head_t *hipri_wait_queue; /* High Priority Queue wait
+							queue */
+		struct lpfc_iocbq  *rsp_iocb;
+		struct lpfcMboxq   *mbox;
+	} context_un;
+
+	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 SLI_IOCB_HIGH_PRIORITY 2	/* High priority command */
+
+#define IOCB_SUCCESS        0
+#define IOCB_BUSY           1
+#define IOCB_ERROR          2
+#define IOCB_TIMEDOUT       3
+
+typedef struct lpfcMboxq {
+	/* MBOXQs are used in single linked lists */
+	struct list_head list;	/* ptr to next mailbox command */
+	MAILBOX_t mb;		/* Mailbox cmd */
+	void *context1;		/* caller context information */
+	void *context2;		/* caller context information */
+
+	void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
+
+} LPFC_MBOXQ_t;
+
+#define MBX_POLL        1	/* poll mailbox till command done, then
+				   return */
+#define MBX_NOWAIT      2	/* issue command then return immediately */
+#define MBX_STOP_IOCB   4	/* Stop iocb processing till mbox cmds
+				   complete */
+
+#define LPFC_MAX_RING_MASK  4	/* max num of rctl/type masks allowed per
+				   ring */
+#define LPFC_MAX_RING       4	/* max num of SLI rings used by driver */
+
+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 */
+};
+
+/* 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_MBX       0x010	/* Stop processing IOCB cmds mbox */
+#define LPFC_STOP_IOCB_EVENT     0x020	/* Stop processing IOCB cmds event */
+#define LPFC_STOP_IOCB_MASK      0x030	/* Stop processing IOCB cmds mask */
+	uint16_t abtsiotag;	/* tracks next iotag to use for ABTS */
+
+	uint32_t local_getidx;   /* last available cmd index (from cmdGetInx) */
+	uint32_t next_cmdidx;    /* next_cmd index */
+	uint8_t rsvd;
+	uint8_t ringno;		/* ring number */
+	uint8_t rspidx;		/* current index in response ring */
+	uint8_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 */
+
+	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 lpfc_iocbq ** fast_lookup; /* array of IOCB ptrs indexed by
+					   iotag */
+	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 *cmdringaddr;	/* virtual address for cmd rings */
+	uint32_t *rspringaddr;	/* virtual address for rsp rings */
+	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 lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
+	uint32_t num_mask;	/* number of mask entries in prt array */
+
+	struct lpfc_sli_ring_stat stats;	/* SLI statistical info */
+
+	/* cmd ring available */
+	void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
+					struct lpfc_sli_ring *);
+};
+
+/* 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 */
+	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 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_SLI2_ACTIVE          0x200	/* SLI2 overlay in firmware is active */
+#define LPFC_PROCESS_LA           0x400	/* Able to process link attention */
+
+	struct lpfc_sli_ring ring[LPFC_MAX_RING];
+	int fcp_ring;		/* ring used for FCP initiator commands */
+	int next_ring;
+
+	int ip_ring;		/* ring used for IP network drv cmds */
+
+	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 timer_list mbox_tmo;	/* Hold clk to timeout active mbox
+					   cmd */
+
+	uint32_t *MBhostaddr;	/* virtual address for mbox cmds */
+};
+
+/* Given a pointer to the start of the ring, and the slot number of
+ * the desired iocb entry, calc a pointer to that entry.
+ * (assume iocb entry size is 32 bytes, or 8 words)
+ */
+#define IOCB_ENTRY(ring,slot) ((IOCB_t *)(((char *)(ring)) + ((slot) * 32)))
+
+#define LPFC_MBOX_TMO           30	/* Sec tmo for outstanding mbox
+					   command */