Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (84 commits)
  [SCSI] be2iscsi: SGE Len == 64K
  [SCSI] be2iscsi: Remove premature free of cid
  [SCSI] be2iscsi: More time for FW
  [SCSI] libsas: fix bug for vacant phy
  [SCSI] sd: Fix overflow with big physical blocks
  [SCSI] st: add MTWEOFI to write filemarks without flushing drive buffer
  [SCSI] libsas: Don't issue commands to devices that have been hot-removed
  [SCSI] megaraid_sas: Add Online Controller Reset to MegaRAID SAS drive
  [SCSI] lpfc 8.3.17: Update lpfc driver version to 8.3.17
  [SCSI] lpfc 8.3.17: Replace function reset methodology
  [SCSI] lpfc 8.3.17: SCSI fixes
  [SCSI] lpfc 8.3.17: BSG fixes
  [SCSI] lpfc 8.3.17: SLI Additions and Fixes
  [SCSI] lpfc 8.3.17: Code Cleanup and Locking fixes
  [SCSI] zfcp: Remove scsi_cmnd->serial_number from debug traces
  [SCSI] ipr: fix array error logging
  [SCSI] aha152x: enable PCMCIA on 64bit
  [SCSI] scsi_dh_alua: Handle all states correctly
  [SCSI] cxgb4i: connection and ddp setting update
  [SCSI] cxgb3i: fixed connection over vlan
  ...

1 files changed, 401 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_fcpim.h b/drivers/scsi/bfa/bfa_fcpim.h
new file mode 100644
index 00000000000..3bf343160aa
--- /dev/null
+++ b/drivers/scsi/bfa/bfa_fcpim.h
@@ -0,0 +1,401 @@
+/*
+ * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ *
+ * Linux driver for Brocade Fibre Channel Host Bus Adapter.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License (GPL) Version 2 as
+ * published by the Free Software Foundation
+ *
+ * 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.
+ */
+
+#ifndef __BFA_FCPIM_H__
+#define __BFA_FCPIM_H__
+
+#include "bfa.h"
+#include "bfa_svc.h"
+#include "bfi_ms.h"
+#include "bfa_defs_svc.h"
+#include "bfa_cs.h"
+
+
+#define BFA_ITNIM_MIN   32
+#define BFA_ITNIM_MAX   1024
+
+#define BFA_IOIM_MIN	8
+#define BFA_IOIM_MAX	2000
+
+#define BFA_TSKIM_MIN   4
+#define BFA_TSKIM_MAX   512
+#define BFA_FCPIM_PATHTOV_DEF	(30 * 1000)	/* in millisecs */
+#define BFA_FCPIM_PATHTOV_MAX	(90 * 1000)	/* in millisecs */
+
+
+#define bfa_itnim_ioprofile_update(__itnim, __index)			\
+	(__itnim->ioprofile.iocomps[__index]++)
+
+#define BFA_IOIM_RETRY_TAG_OFFSET 11
+#define BFA_IOIM_RETRY_TAG_MASK 0x07ff /* 2K IOs */
+#define BFA_IOIM_RETRY_MAX 7
+
+/* Buckets are are 512 bytes to 2MB */
+static inline u32
+bfa_ioim_get_index(u32 n) {
+	int pos = 0;
+	if (n >= (1UL)<<22)
+		return BFA_IOBUCKET_MAX - 1;
+	n >>= 8;
+	if (n >= (1UL)<<16)
+		n >>= 16; pos += 16;
+	if (n >= 1 << 8)
+		n >>= 8; pos += 8;
+	if (n >= 1 << 4)
+		n >>= 4; pos += 4;
+	if (n >= 1 << 2)
+		n >>= 2; pos += 2;
+	if (n >= 1 << 1)
+		pos += 1;
+
+	return (n == 0) ? (0) : pos;
+}
+
+/*
+ * forward declarations
+ */
+struct bfa_ioim_s;
+struct bfa_tskim_s;
+struct bfad_ioim_s;
+struct bfad_tskim_s;
+
+typedef void    (*bfa_fcpim_profile_t) (struct bfa_ioim_s *ioim);
+
+struct bfa_fcpim_mod_s {
+	struct bfa_s		*bfa;
+	struct bfa_itnim_s	*itnim_arr;
+	struct bfa_ioim_s	*ioim_arr;
+	struct bfa_ioim_sp_s	*ioim_sp_arr;
+	struct bfa_tskim_s	*tskim_arr;
+	struct bfa_dma_s	snsbase;
+	int			num_itnims;
+	int			num_ioim_reqs;
+	int			num_tskim_reqs;
+	u32			path_tov;
+	u16			q_depth;
+	u8			reqq;		/*  Request queue to be used */
+	u8			rsvd;
+	struct list_head	itnim_q;	/*  queue of active itnim */
+	struct list_head	ioim_free_q;	/*  free IO resources	*/
+	struct list_head	ioim_resfree_q; /*  IOs waiting for f/w */
+	struct list_head	ioim_comp_q;	/*  IO global comp Q	*/
+	struct list_head	tskim_free_q;
+	u32		ios_active;	/*  current active IOs	*/
+	u32		delay_comp;
+	struct bfa_fcpim_del_itn_stats_s del_itn_stats;
+	bfa_boolean_t		ioredirect;
+	bfa_boolean_t		io_profile;
+	u32		io_profile_start_time;
+	bfa_fcpim_profile_t     profile_comp;
+	bfa_fcpim_profile_t     profile_start;
+};
+
+/**
+ * BFA IO (initiator mode)
+ */
+struct bfa_ioim_s {
+	struct list_head	qe;		/*  queue elememt	*/
+	bfa_sm_t		sm;		/*  BFA ioim state machine */
+	struct bfa_s		*bfa;		/*  BFA module	*/
+	struct bfa_fcpim_mod_s	*fcpim;		/*  parent fcpim module */
+	struct bfa_itnim_s	*itnim;		/*  i-t-n nexus for this IO  */
+	struct bfad_ioim_s	*dio;		/*  driver IO handle	*/
+	u16		iotag;		/*  FWI IO tag	*/
+	u16		abort_tag;	/*  unqiue abort request tag */
+	u16		nsges;		/*  number of SG elements */
+	u16		nsgpgs;		/*  number of SG pages	*/
+	struct bfa_sgpg_s	*sgpg;		/*  first SG page	*/
+	struct list_head	sgpg_q;		/*  allocated SG pages	*/
+	struct bfa_cb_qe_s	hcb_qe;		/*  bfa callback qelem	*/
+	bfa_cb_cbfn_t		io_cbfn;	/*  IO completion handler */
+	struct bfa_ioim_sp_s *iosp;		/*  slow-path IO handling */
+	u8		reqq;		/*  Request queue for I/O */
+	u64 start_time;			/*  IO's Profile start val */
+};
+
+
+struct bfa_ioim_sp_s {
+	struct bfi_msg_s	comp_rspmsg;	/*  IO comp f/w response */
+	u8			*snsinfo;	/*  sense info for this IO   */
+	struct bfa_sgpg_wqe_s sgpg_wqe;	/*  waitq elem for sgpg	*/
+	struct bfa_reqq_wait_s reqq_wait;	/*  to wait for room in reqq */
+	bfa_boolean_t		abort_explicit;	/*  aborted by OS	*/
+	struct bfa_tskim_s	*tskim;		/*  Relevant TM cmd	*/
+};
+
+/**
+ * BFA Task management command (initiator mode)
+ */
+struct bfa_tskim_s {
+	struct list_head	qe;
+	bfa_sm_t		sm;
+	struct bfa_s	*bfa;	/*  BFA module  */
+	struct bfa_fcpim_mod_s  *fcpim;	/*  parent fcpim module	*/
+	struct bfa_itnim_s	*itnim;	/*  i-t-n nexus for this IO  */
+	struct bfad_tskim_s	*dtsk;   /*  driver task mgmt cmnd	*/
+	bfa_boolean_t	notify;	/*  notify itnim on TM comp  */
+	lun_t	lun;	/*  lun if applicable	*/
+	enum fcp_tm_cmnd	tm_cmnd;	/*  task management command  */
+	u16	tsk_tag;	/*  FWI IO tag	*/
+	u8	tsecs;	/*  timeout in seconds	*/
+	struct bfa_reqq_wait_s  reqq_wait;   /*  to wait for room in reqq */
+	struct list_head	io_q;	/*  queue of affected IOs	*/
+	struct bfa_wc_s	wc;	/*  waiting counter	*/
+	struct bfa_cb_qe_s	hcb_qe;	/*  bfa callback qelem	*/
+	enum bfi_tskim_status   tsk_status;  /*  TM status	*/
+};
+
+
+/**
+ * BFA i-t-n (initiator mode)
+ */
+struct bfa_itnim_s {
+	struct list_head	qe;		/*  queue element	*/
+	bfa_sm_t	  sm;		/*  i-t-n im BFA state machine  */
+	struct bfa_s	*bfa;		/*  bfa instance	*/
+	struct bfa_rport_s *rport;	/*  bfa rport	*/
+	void	*ditn;		/*  driver i-t-n structure	*/
+	struct bfi_mhdr_s	mhdr;	/*  pre-built mhdr	*/
+	u8	msg_no;		/*  itnim/rport firmware handle */
+	u8	reqq;		/*  CQ for requests	*/
+	struct bfa_cb_qe_s	hcb_qe;	/*  bfa callback qelem	*/
+	struct list_head pending_q;	/*  queue of pending IO requests */
+	struct list_head io_q;		/*  queue of active IO requests */
+	struct list_head io_cleanup_q;	/*  IO being cleaned up	*/
+	struct list_head tsk_q;		/*  queue of active TM commands */
+	struct list_head  delay_comp_q; /*  queue of failed inflight cmds */
+	bfa_boolean_t   seq_rec;	/*  SQER supported	*/
+	bfa_boolean_t   is_online;	/*  itnim is ONLINE for IO	*/
+	bfa_boolean_t   iotov_active;	/*  IO TOV timer is active	 */
+	struct bfa_wc_s	wc;	/*  waiting counter	*/
+	struct bfa_timer_s timer;	/*  pending IO TOV		 */
+	struct bfa_reqq_wait_s reqq_wait; /*  to wait for room in reqq */
+	struct bfa_fcpim_mod_s *fcpim;	/*  fcpim module	*/
+	struct bfa_itnim_iostats_s	stats;
+	struct bfa_itnim_ioprofile_s  ioprofile;
+};
+
+
+#define bfa_itnim_is_online(_itnim) ((_itnim)->is_online)
+#define BFA_FCPIM_MOD(_hal) (&(_hal)->modules.fcpim_mod)
+#define BFA_IOIM_FROM_TAG(_fcpim, _iotag)	\
+	(&fcpim->ioim_arr[(_iotag & BFA_IOIM_RETRY_TAG_MASK)])
+#define BFA_TSKIM_FROM_TAG(_fcpim, _tmtag)	\
+	(&fcpim->tskim_arr[_tmtag & (fcpim->num_tskim_reqs - 1)])
+
+#define bfa_io_profile_start_time(_bfa)	\
+	(_bfa->modules.fcpim_mod.io_profile_start_time)
+#define bfa_fcpim_get_io_profile(_bfa)	\
+	(_bfa->modules.fcpim_mod.io_profile)
+
+static inline bfa_boolean_t
+bfa_ioim_get_iotag(struct bfa_ioim_s *ioim)
+{
+	u16 k = ioim->iotag;
+
+	k >>= BFA_IOIM_RETRY_TAG_OFFSET; k++;
+
+	if (k > BFA_IOIM_RETRY_MAX)
+		return BFA_FALSE;
+	ioim->iotag &= BFA_IOIM_RETRY_TAG_MASK;
+	ioim->iotag |= k<<BFA_IOIM_RETRY_TAG_OFFSET;
+	return BFA_TRUE;
+}
+/*
+ * function prototypes
+ */
+void	bfa_ioim_attach(struct bfa_fcpim_mod_s *fcpim,
+					struct bfa_meminfo_s *minfo);
+void	bfa_ioim_detach(struct bfa_fcpim_mod_s *fcpim);
+void	bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
+void	bfa_ioim_good_comp_isr(struct bfa_s *bfa,
+					struct bfi_msg_s *msg);
+void	bfa_ioim_cleanup(struct bfa_ioim_s *ioim);
+void	bfa_ioim_cleanup_tm(struct bfa_ioim_s *ioim,
+					struct bfa_tskim_s *tskim);
+void	bfa_ioim_iocdisable(struct bfa_ioim_s *ioim);
+void	bfa_ioim_tov(struct bfa_ioim_s *ioim);
+
+void	bfa_tskim_attach(struct bfa_fcpim_mod_s *fcpim,
+					struct bfa_meminfo_s *minfo);
+void	bfa_tskim_detach(struct bfa_fcpim_mod_s *fcpim);
+void	bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
+void	bfa_tskim_iodone(struct bfa_tskim_s *tskim);
+void	bfa_tskim_iocdisable(struct bfa_tskim_s *tskim);
+void	bfa_tskim_cleanup(struct bfa_tskim_s *tskim);
+
+void	bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
+					u32 *dm_len);
+void	bfa_itnim_attach(struct bfa_fcpim_mod_s *fcpim,
+					struct bfa_meminfo_s *minfo);
+void	bfa_itnim_detach(struct bfa_fcpim_mod_s *fcpim);
+void	bfa_itnim_iocdisable(struct bfa_itnim_s *itnim);
+void	bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
+void	bfa_itnim_iodone(struct bfa_itnim_s *itnim);
+void	bfa_itnim_tskdone(struct bfa_itnim_s *itnim);
+bfa_boolean_t   bfa_itnim_hold_io(struct bfa_itnim_s *itnim);
+void bfa_ioim_profile_comp(struct bfa_ioim_s *ioim);
+void bfa_ioim_profile_start(struct bfa_ioim_s *ioim);
+
+
+/*
+ * bfa fcpim module API functions
+ */
+void		bfa_fcpim_path_tov_set(struct bfa_s *bfa, u16 path_tov);
+u16	bfa_fcpim_path_tov_get(struct bfa_s *bfa);
+void		bfa_fcpim_qdepth_set(struct bfa_s *bfa, u16 q_depth);
+u16	bfa_fcpim_qdepth_get(struct bfa_s *bfa);
+bfa_status_t bfa_fcpim_get_modstats(struct bfa_s *bfa,
+	 struct bfa_itnim_iostats_s *modstats);
+bfa_status_t bfa_fcpim_port_iostats(struct bfa_s *bfa,
+		struct bfa_itnim_iostats_s *stats, u8 lp_tag);
+bfa_status_t bfa_fcpim_get_del_itn_stats(struct bfa_s *bfa,
+	 struct bfa_fcpim_del_itn_stats_s *modstats);
+bfa_status_t bfa_fcpim_port_clear_iostats(struct bfa_s *bfa, u8 lp_tag);
+void bfa_fcpim_add_stats(struct bfa_itnim_iostats_s *fcpim_stats,
+		struct bfa_itnim_iostats_s *itnim_stats);
+bfa_status_t bfa_fcpim_clr_modstats(struct bfa_s *bfa);
+void		bfa_fcpim_set_ioredirect(struct bfa_s *bfa,
+				bfa_boolean_t state);
+void		bfa_fcpim_update_ioredirect(struct bfa_s *bfa);
+bfa_status_t bfa_fcpim_profile_on(struct bfa_s *bfa, u32 time);
+bfa_status_t bfa_fcpim_profile_off(struct bfa_s *bfa);
+#define bfa_fcpim_ioredirect_enabled(__bfa)				\
+	(((struct bfa_fcpim_mod_s *)(BFA_FCPIM_MOD(__bfa)))->ioredirect)
+
+#define bfa_fcpim_get_next_reqq(__bfa, __qid)				\
+{									\
+	struct bfa_fcpim_mod_s *__fcpim = BFA_FCPIM_MOD(__bfa);      \
+	__fcpim->reqq++;						\
+	__fcpim->reqq &= (BFI_IOC_MAX_CQS - 1);      \
+	*(__qid) = __fcpim->reqq;					\
+}
+
+#define bfa_iocfc_map_msg_to_qid(__msg, __qid)				\
+	*(__qid) = (u8)((__msg) & (BFI_IOC_MAX_CQS - 1));
+/*
+ * bfa itnim API functions
+ */
+struct bfa_itnim_s *bfa_itnim_create(struct bfa_s *bfa,
+					struct bfa_rport_s *rport, void *itnim);
+void		bfa_itnim_delete(struct bfa_itnim_s *itnim);
+void		bfa_itnim_online(struct bfa_itnim_s *itnim,
+				 bfa_boolean_t seq_rec);
+void		bfa_itnim_offline(struct bfa_itnim_s *itnim);
+void		bfa_itnim_get_stats(struct bfa_itnim_s *itnim,
+			struct bfa_itnim_iostats_s *stats);
+void		bfa_itnim_clear_stats(struct bfa_itnim_s *itnim);
+bfa_status_t	bfa_itnim_get_ioprofile(struct bfa_itnim_s *itnim,
+		struct bfa_itnim_ioprofile_s *ioprofile);
+#define bfa_itnim_get_reqq(__ioim) (((struct bfa_ioim_s *)__ioim)->itnim->reqq)
+
+/**
+ *	BFA completion callback for bfa_itnim_online().
+ *
+ * @param[in]		itnim		FCS or driver itnim instance
+ *
+ * return None
+ */
+void	bfa_cb_itnim_online(void *itnim);
+
+/**
+ *	BFA completion callback for bfa_itnim_offline().
+ *
+ * @param[in]		itnim		FCS or driver itnim instance
+ *
+ * return None
+ */
+void	bfa_cb_itnim_offline(void *itnim);
+void	bfa_cb_itnim_tov_begin(void *itnim);
+void	bfa_cb_itnim_tov(void *itnim);
+
+/**
+ *	BFA notification to FCS/driver for second level error recovery.
+ *
+ * Atleast one I/O request has timedout and target is unresponsive to
+ * repeated abort requests. Second level error recovery should be initiated
+ * by starting implicit logout and recovery procedures.
+ *
+ * @param[in]		itnim		FCS or driver itnim instance
+ *
+ * return None
+ */
+void	bfa_cb_itnim_sler(void *itnim);
+
+/*
+ * bfa ioim API functions
+ */
+struct bfa_ioim_s	*bfa_ioim_alloc(struct bfa_s *bfa,
+					struct bfad_ioim_s *dio,
+					struct bfa_itnim_s *itnim,
+					u16 nsgles);
+
+void		bfa_ioim_free(struct bfa_ioim_s *ioim);
+void		bfa_ioim_start(struct bfa_ioim_s *ioim);
+bfa_status_t	bfa_ioim_abort(struct bfa_ioim_s *ioim);
+void		bfa_ioim_delayed_comp(struct bfa_ioim_s *ioim,
+				      bfa_boolean_t iotov);
+
+
+/**
+ *	I/O completion notification.
+ *
+ * @param[in]		dio			driver IO structure
+ * @param[in]		io_status		IO completion status
+ * @param[in]		scsi_status		SCSI status returned by target
+ * @param[in]		sns_len			SCSI sense length, 0 if none
+ * @param[in]		sns_info		SCSI sense data, if any
+ * @param[in]		residue			Residual length
+ *
+ * @return None
+ */
+void	bfa_cb_ioim_done(void *bfad, struct bfad_ioim_s *dio,
+				  enum bfi_ioim_status io_status,
+				  u8 scsi_status, int sns_len,
+				  u8 *sns_info, s32 residue);
+
+/**
+ *	I/O good completion notification.
+ *
+ * @param[in]		dio			driver IO structure
+ *
+ * @return None
+ */
+void	bfa_cb_ioim_good_comp(void *bfad, struct bfad_ioim_s *dio);
+
+/**
+ *	I/O abort completion notification
+ *
+ * @param[in]		dio			driver IO that was aborted
+ *
+ * @return None
+ */
+void	bfa_cb_ioim_abort(void *bfad, struct bfad_ioim_s *dio);
+
+/*
+ * bfa tskim API functions
+ */
+struct bfa_tskim_s	*bfa_tskim_alloc(struct bfa_s *bfa,
+					struct bfad_tskim_s *dtsk);
+void		bfa_tskim_free(struct bfa_tskim_s *tskim);
+void		bfa_tskim_start(struct bfa_tskim_s *tskim,
+				struct bfa_itnim_s *itnim, lun_t lun,
+				enum fcp_tm_cmnd tm, u8 t_secs);
+void		bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
+				  enum bfi_tskim_status tsk_status);
+
+#endif /* __BFA_FCPIM_H__ */