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kernel_optimize_test/drivers/scsi/bfa/bfa_fcpim.h
Thomas Gleixner 52fa7bf9ea treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 292 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 66 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141901.606369721@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:36:38 +02:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
* Copyright (c) 2014- QLogic Corporation.
* All rights reserved
* www.qlogic.com
*
* Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
*/
#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"
/* FCP module related definitions */
#define BFA_IO_MAX BFI_IO_MAX
#define BFA_FWTIO_MAX 2000
struct bfa_fcp_mod_s;
struct bfa_iotag_s {
struct list_head qe; /* queue element */
u16 tag; /* FW IO tag */
};
struct bfa_itn_s {
bfa_isr_func_t isr;
};
void bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport,
void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m));
void bfa_itn_isr(struct bfa_s *bfa, struct bfi_msg_s *m);
void bfa_iotag_attach(struct bfa_fcp_mod_s *fcp);
void bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw, u16 max_ioim_fw);
#define BFA_FCP_MOD(_hal) (&(_hal)->modules.fcp_mod)
#define BFA_MEM_FCP_KVA(__bfa) (&(BFA_FCP_MOD(__bfa)->kva_seg))
#define BFA_IOTAG_FROM_TAG(_fcp, _tag) \
(&(_fcp)->iotag_arr[(_tag & BFA_IOIM_IOTAG_MASK)])
#define BFA_ITN_FROM_TAG(_fcp, _tag) \
((_fcp)->itn_arr + ((_tag) & ((_fcp)->num_itns - 1)))
#define BFA_SNSINFO_FROM_TAG(_fcp, _tag) \
bfa_mem_get_dmabuf_kva(_fcp, (_tag & BFA_IOIM_IOTAG_MASK), \
BFI_IOIM_SNSLEN)
#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_IOTAG_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_s {
struct bfa_s *bfa;
struct bfa_fcp_mod_s *fcp;
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;
int num_itnims;
int num_tskim_reqs;
u32 path_tov;
u16 q_depth;
u8 reqq; /* Request queue to be used */
struct list_head itnim_q; /* queue of active itnim */
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;
struct list_head tskim_unused_q; /* Unused tskim 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;
time64_t io_profile_start_time;
bfa_fcpim_profile_t profile_comp;
bfa_fcpim_profile_t profile_start;
};
/* Max FCP dma segs required */
#define BFA_FCP_DMA_SEGS BFI_IOIM_SNSBUF_SEGS
struct bfa_fcp_mod_s {
struct bfa_s *bfa;
struct list_head iotag_ioim_free_q; /* free IO resources */
struct list_head iotag_tio_free_q; /* free IO resources */
struct list_head iotag_unused_q; /* unused IO resources*/
struct bfa_iotag_s *iotag_arr;
struct bfa_itn_s *itn_arr;
int max_ioim_reqs;
int num_ioim_reqs;
int num_fwtio_reqs;
int num_itns;
struct bfa_dma_s snsbase[BFA_FCP_DMA_SEGS];
struct bfa_fcpim_s fcpim;
struct bfa_mem_dma_s dma_seg[BFA_FCP_DMA_SEGS];
struct bfa_mem_kva_s kva_seg;
int throttle_update_required;
};
/*
* 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_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 */
u8 mode; /* IO is passthrough or not */
u64 start_time; /* IO's Profile start val */
};
struct bfa_ioim_sp_s {
struct bfi_msg_s comp_rspmsg; /* IO comp f/w response */
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_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 */
struct scsi_lun 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_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(_hal) (&(_hal)->modules.fcp_mod.fcpim)
#define BFA_IOIM_TAG_2_ID(_iotag) ((_iotag) & BFA_IOIM_IOTAG_MASK)
#define BFA_IOIM_FROM_TAG(_fcpim, _iotag) \
(&fcpim->ioim_arr[(_iotag & BFA_IOIM_IOTAG_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.fcp_mod.fcpim.io_profile_start_time)
#define bfa_fcpim_get_io_profile(_bfa) \
((_bfa)->modules.fcp_mod.fcpim.io_profile)
#define bfa_ioim_update_iotag(__ioim) do { \
uint16_t k = (__ioim)->iotag >> BFA_IOIM_RETRY_TAG_OFFSET; \
k++; (__ioim)->iotag &= BFA_IOIM_IOTAG_MASK; \
(__ioim)->iotag |= k << BFA_IOIM_RETRY_TAG_OFFSET; \
} while (0)
static inline bfa_boolean_t
bfa_ioim_maxretry_reached(struct bfa_ioim_s *ioim)
{
uint16_t k = ioim->iotag >> BFA_IOIM_RETRY_TAG_OFFSET;
if (k < BFA_IOIM_RETRY_MAX)
return BFA_FALSE;
return BFA_TRUE;
}
/*
* function prototypes
*/
void bfa_ioim_attach(struct bfa_fcpim_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_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_tskim_res_recfg(struct bfa_s *bfa, u16 num_tskim_fw);
void bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len);
void bfa_itnim_attach(struct bfa_fcpim_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);
/*
* 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);
u16 bfa_fcpim_qdepth_get(struct bfa_s *bfa);
bfa_status_t bfa_fcpim_port_iostats(struct bfa_s *bfa,
struct bfa_itnim_iostats_s *stats, 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_profile_on(struct bfa_s *bfa, time64_t time);
bfa_status_t bfa_fcpim_profile_off(struct bfa_s *bfa);
#define bfa_fcpim_ioredirect_enabled(__bfa) \
(((struct bfa_fcpim_s *)(BFA_FCPIM(__bfa)))->ioredirect)
#define bfa_fcpim_get_next_reqq(__bfa, __qid) \
{ \
struct bfa_fcpim_s *__fcpim = BFA_FCPIM(__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_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().
*/
void bfa_cb_itnim_online(void *itnim);
/*
* BFA completion callback for bfa_itnim_offline().
*/
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.
*/
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.
*/
void bfa_cb_ioim_good_comp(void *bfad, struct bfad_ioim_s *dio);
/*
* I/O abort completion notification
*/
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, struct scsi_lun 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);
void bfa_fcpim_lunmask_rp_update(struct bfa_s *bfa, wwn_t lp_wwn,
wwn_t rp_wwn, u16 rp_tag, u8 lp_tag);
bfa_status_t bfa_fcpim_lunmask_update(struct bfa_s *bfa, u32 on_off);
bfa_status_t bfa_fcpim_lunmask_query(struct bfa_s *bfa, void *buf);
bfa_status_t bfa_fcpim_lunmask_delete(struct bfa_s *bfa, u16 vf_id,
wwn_t *pwwn, wwn_t rpwwn, struct scsi_lun lun);
bfa_status_t bfa_fcpim_lunmask_add(struct bfa_s *bfa, u16 vf_id,
wwn_t *pwwn, wwn_t rpwwn, struct scsi_lun lun);
bfa_status_t bfa_fcpim_lunmask_clear(struct bfa_s *bfa);
u16 bfa_fcpim_read_throttle(struct bfa_s *bfa);
bfa_status_t bfa_fcpim_write_throttle(struct bfa_s *bfa, u16 value);
bfa_status_t bfa_fcpim_throttle_set(struct bfa_s *bfa, u16 value);
bfa_status_t bfa_fcpim_throttle_get(struct bfa_s *bfa, void *buf);
u16 bfa_fcpim_get_throttle_cfg(struct bfa_s *bfa, u16 drv_cfg_param);
#endif /* __BFA_FCPIM_H__ */
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