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ba816ea8e2
kernel_optimize_test/drivers/scsi/bfa/bfa_fcpim.c
Jing Huang ba816ea8e2 [SCSI] bfa: replace endian swap macros with the ones provided by linux 
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-10-25 16:17:14 -05:00

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/*
* 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.
*/
#include "bfa_modules.h"
#include "bfa_cb_ioim.h"
BFA_TRC_FILE(HAL, FCPIM);
BFA_MODULE(fcpim);
#define bfa_fcpim_add_iostats(__l, __r, __stats) \
(__l->__stats += __r->__stats)
/**
* BFA ITNIM Related definitions
*/
static void bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim);
#define BFA_ITNIM_FROM_TAG(_fcpim, _tag) \
(((_fcpim)->itnim_arr + ((_tag) & ((_fcpim)->num_itnims - 1))))
#define bfa_fcpim_additn(__itnim) \
list_add_tail(&(__itnim)->qe, &(__itnim)->fcpim->itnim_q)
#define bfa_fcpim_delitn(__itnim) do { \
bfa_assert(bfa_q_is_on_q(&(__itnim)->fcpim->itnim_q, __itnim)); \
bfa_itnim_update_del_itn_stats(__itnim); \
list_del(&(__itnim)->qe); \
bfa_assert(list_empty(&(__itnim)->io_q)); \
bfa_assert(list_empty(&(__itnim)->io_cleanup_q)); \
bfa_assert(list_empty(&(__itnim)->pending_q)); \
} while (0)
#define bfa_itnim_online_cb(__itnim) do { \
if ((__itnim)->bfa->fcs) \
bfa_cb_itnim_online((__itnim)->ditn); \
else { \
bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \
__bfa_cb_itnim_online, (__itnim)); \
} \
} while (0)
#define bfa_itnim_offline_cb(__itnim) do { \
if ((__itnim)->bfa->fcs) \
bfa_cb_itnim_offline((__itnim)->ditn); \
else { \
bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \
__bfa_cb_itnim_offline, (__itnim)); \
} \
} while (0)
#define bfa_itnim_sler_cb(__itnim) do { \
if ((__itnim)->bfa->fcs) \
bfa_cb_itnim_sler((__itnim)->ditn); \
else { \
bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \
__bfa_cb_itnim_sler, (__itnim)); \
} \
} while (0)
/**
* bfa_itnim_sm BFA itnim state machine
*/
enum bfa_itnim_event {
BFA_ITNIM_SM_CREATE = 1, /* itnim is created */
BFA_ITNIM_SM_ONLINE = 2, /* itnim is online */
BFA_ITNIM_SM_OFFLINE = 3, /* itnim is offline */
BFA_ITNIM_SM_FWRSP = 4, /* firmware response */
BFA_ITNIM_SM_DELETE = 5, /* deleting an existing itnim */
BFA_ITNIM_SM_CLEANUP = 6, /* IO cleanup completion */
BFA_ITNIM_SM_SLER = 7, /* second level error recovery */
BFA_ITNIM_SM_HWFAIL = 8, /* IOC h/w failure event */
BFA_ITNIM_SM_QRESUME = 9, /* queue space available */
};
/**
* BFA IOIM related definitions
*/
#define bfa_ioim_move_to_comp_q(__ioim) do { \
list_del(&(__ioim)->qe); \
list_add_tail(&(__ioim)->qe, &(__ioim)->fcpim->ioim_comp_q); \
} while (0)
#define bfa_ioim_cb_profile_comp(__fcpim, __ioim) do { \
if ((__fcpim)->profile_comp) \
(__fcpim)->profile_comp(__ioim); \
} while (0)
#define bfa_ioim_cb_profile_start(__fcpim, __ioim) do { \
if ((__fcpim)->profile_start) \
(__fcpim)->profile_start(__ioim); \
} while (0)
/**
* hal_ioim_sm
*/
/**
* IO state machine events
*/
enum bfa_ioim_event {
BFA_IOIM_SM_START = 1, /* io start request from host */
BFA_IOIM_SM_COMP_GOOD = 2, /* io good comp, resource free */
BFA_IOIM_SM_COMP = 3, /* io comp, resource is free */
BFA_IOIM_SM_COMP_UTAG = 4, /* io comp, resource is free */
BFA_IOIM_SM_DONE = 5, /* io comp, resource not free */
BFA_IOIM_SM_FREE = 6, /* io resource is freed */
BFA_IOIM_SM_ABORT = 7, /* abort request from scsi stack */
BFA_IOIM_SM_ABORT_COMP = 8, /* abort from f/w */
BFA_IOIM_SM_ABORT_DONE = 9, /* abort completion from f/w */
BFA_IOIM_SM_QRESUME = 10, /* CQ space available to queue IO */
BFA_IOIM_SM_SGALLOCED = 11, /* SG page allocation successful */
BFA_IOIM_SM_SQRETRY = 12, /* sequence recovery retry */
BFA_IOIM_SM_HCB = 13, /* bfa callback complete */
BFA_IOIM_SM_CLEANUP = 14, /* IO cleanup from itnim */
BFA_IOIM_SM_TMSTART = 15, /* IO cleanup from tskim */
BFA_IOIM_SM_TMDONE = 16, /* IO cleanup from tskim */
BFA_IOIM_SM_HWFAIL = 17, /* IOC h/w failure event */
BFA_IOIM_SM_IOTOV = 18, /* ITN offline TOV */
};
/**
* BFA TSKIM related definitions
*/
/**
* task management completion handling
*/
#define bfa_tskim_qcomp(__tskim, __cbfn) do { \
bfa_cb_queue((__tskim)->bfa, &(__tskim)->hcb_qe, __cbfn, (__tskim));\
bfa_tskim_notify_comp(__tskim); \
} while (0)
#define bfa_tskim_notify_comp(__tskim) do { \
if ((__tskim)->notify) \
bfa_itnim_tskdone((__tskim)->itnim); \
} while (0)
enum bfa_tskim_event {
BFA_TSKIM_SM_START = 1, /* TM command start */
BFA_TSKIM_SM_DONE = 2, /* TM completion */
BFA_TSKIM_SM_QRESUME = 3, /* resume after qfull */
BFA_TSKIM_SM_HWFAIL = 5, /* IOC h/w failure event */
BFA_TSKIM_SM_HCB = 6, /* BFA callback completion */
BFA_TSKIM_SM_IOS_DONE = 7, /* IO and sub TM completions */
BFA_TSKIM_SM_CLEANUP = 8, /* TM cleanup on ITN offline */
BFA_TSKIM_SM_CLEANUP_DONE = 9, /* TM abort completion */
};
/**
* forward declaration for BFA ITNIM functions
*/
static void bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim);
static bfa_boolean_t bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim);
static bfa_boolean_t bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim);
static void bfa_itnim_cleanp_comp(void *itnim_cbarg);
static void bfa_itnim_cleanup(struct bfa_itnim_s *itnim);
static void __bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete);
static void __bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete);
static void __bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete);
static void bfa_itnim_iotov_online(struct bfa_itnim_s *itnim);
static void bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim);
static void bfa_itnim_iotov(void *itnim_arg);
static void bfa_itnim_iotov_start(struct bfa_itnim_s *itnim);
static void bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim);
static void bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim);
/**
* forward declaration of ITNIM state machine
*/
static void bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_created(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_online(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_sler(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_offline(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
static void bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event);
/**
* forward declaration for BFA IOIM functions
*/
static bfa_boolean_t bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim);
static bfa_boolean_t bfa_ioim_sge_setup(struct bfa_ioim_s *ioim);
static void bfa_ioim_sgpg_setup(struct bfa_ioim_s *ioim);
static bfa_boolean_t bfa_ioim_send_abort(struct bfa_ioim_s *ioim);
static void bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim);
static void __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete);
static void __bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete);
static void __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete);
static void __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete);
static void __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete);
static bfa_boolean_t bfa_ioim_is_abortable(struct bfa_ioim_s *ioim);
/**
* forward declaration of BFA IO state machine
*/
static void bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_active(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_abort(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_cleanup(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_qfull(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_hcb_free(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_resfree(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
static void bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim,
enum bfa_ioim_event event);
/**
* forward declaration for BFA TSKIM functions
*/
static void __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete);
static void __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete);
static bfa_boolean_t bfa_tskim_match_scope(struct bfa_tskim_s *tskim,
lun_t lun);
static void bfa_tskim_gather_ios(struct bfa_tskim_s *tskim);
static void bfa_tskim_cleanp_comp(void *tskim_cbarg);
static void bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim);
static bfa_boolean_t bfa_tskim_send(struct bfa_tskim_s *tskim);
static bfa_boolean_t bfa_tskim_send_abort(struct bfa_tskim_s *tskim);
static void bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim);
/**
* forward declaration of BFA TSKIM state machine
*/
static void bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim,
enum bfa_tskim_event event);
static void bfa_tskim_sm_active(struct bfa_tskim_s *tskim,
enum bfa_tskim_event event);
static void bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim,
enum bfa_tskim_event event);
static void bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim,
enum bfa_tskim_event event);
static void bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim,
enum bfa_tskim_event event);
static void bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
enum bfa_tskim_event event);
static void bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim,
enum bfa_tskim_event event);
/**
* hal_fcpim_mod BFA FCP Initiator Mode module
*/
/**
* Compute and return memory needed by FCP(im) module.
*/
static void
bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
u32 *dm_len)
{
bfa_itnim_meminfo(cfg, km_len, dm_len);
/**
* IO memory
*/
if (cfg->fwcfg.num_ioim_reqs < BFA_IOIM_MIN)
cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MIN;
else if (cfg->fwcfg.num_ioim_reqs > BFA_IOIM_MAX)
cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX;
*km_len += cfg->fwcfg.num_ioim_reqs *
(sizeof(struct bfa_ioim_s) + sizeof(struct bfa_ioim_sp_s));
*dm_len += cfg->fwcfg.num_ioim_reqs * BFI_IOIM_SNSLEN;
/**
* task management command memory
*/
if (cfg->fwcfg.num_tskim_reqs < BFA_TSKIM_MIN)
cfg->fwcfg.num_tskim_reqs = BFA_TSKIM_MIN;
*km_len += cfg->fwcfg.num_tskim_reqs * sizeof(struct bfa_tskim_s);
}
static void
bfa_fcpim_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
bfa_trc(bfa, cfg->drvcfg.path_tov);
bfa_trc(bfa, cfg->fwcfg.num_rports);
bfa_trc(bfa, cfg->fwcfg.num_ioim_reqs);
bfa_trc(bfa, cfg->fwcfg.num_tskim_reqs);
fcpim->bfa = bfa;
fcpim->num_itnims = cfg->fwcfg.num_rports;
fcpim->num_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
fcpim->num_tskim_reqs = cfg->fwcfg.num_tskim_reqs;
fcpim->path_tov = cfg->drvcfg.path_tov;
fcpim->delay_comp = cfg->drvcfg.delay_comp;
fcpim->profile_comp = NULL;
fcpim->profile_start = NULL;
bfa_itnim_attach(fcpim, meminfo);
bfa_tskim_attach(fcpim, meminfo);
bfa_ioim_attach(fcpim, meminfo);
}
static void
bfa_fcpim_detach(struct bfa_s *bfa)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
bfa_ioim_detach(fcpim);
bfa_tskim_detach(fcpim);
}
static void
bfa_fcpim_start(struct bfa_s *bfa)
{
}
static void
bfa_fcpim_stop(struct bfa_s *bfa)
{
}
static void
bfa_fcpim_iocdisable(struct bfa_s *bfa)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct bfa_itnim_s *itnim;
struct list_head *qe, *qen;
list_for_each_safe(qe, qen, &fcpim->itnim_q) {
itnim = (struct bfa_itnim_s *) qe;
bfa_itnim_iocdisable(itnim);
}
}
void
bfa_fcpim_add_stats(struct bfa_itnim_iostats_s *lstats,
struct bfa_itnim_iostats_s *rstats)
{
bfa_fcpim_add_iostats(lstats, rstats, total_ios);
bfa_fcpim_add_iostats(lstats, rstats, qresumes);
bfa_fcpim_add_iostats(lstats, rstats, no_iotags);
bfa_fcpim_add_iostats(lstats, rstats, io_aborts);
bfa_fcpim_add_iostats(lstats, rstats, no_tskims);
bfa_fcpim_add_iostats(lstats, rstats, iocomp_ok);
bfa_fcpim_add_iostats(lstats, rstats, iocomp_underrun);
bfa_fcpim_add_iostats(lstats, rstats, iocomp_overrun);
bfa_fcpim_add_iostats(lstats, rstats, iocomp_aborted);
bfa_fcpim_add_iostats(lstats, rstats, iocomp_timedout);
bfa_fcpim_add_iostats(lstats, rstats, iocom_nexus_abort);
bfa_fcpim_add_iostats(lstats, rstats, iocom_proto_err);
bfa_fcpim_add_iostats(lstats, rstats, iocom_dif_err);
bfa_fcpim_add_iostats(lstats, rstats, iocom_sqer_needed);
bfa_fcpim_add_iostats(lstats, rstats, iocom_res_free);
bfa_fcpim_add_iostats(lstats, rstats, iocom_hostabrts);
bfa_fcpim_add_iostats(lstats, rstats, iocom_utags);
bfa_fcpim_add_iostats(lstats, rstats, io_cleanups);
bfa_fcpim_add_iostats(lstats, rstats, io_tmaborts);
bfa_fcpim_add_iostats(lstats, rstats, onlines);
bfa_fcpim_add_iostats(lstats, rstats, offlines);
bfa_fcpim_add_iostats(lstats, rstats, creates);
bfa_fcpim_add_iostats(lstats, rstats, deletes);
bfa_fcpim_add_iostats(lstats, rstats, create_comps);
bfa_fcpim_add_iostats(lstats, rstats, delete_comps);
bfa_fcpim_add_iostats(lstats, rstats, sler_events);
bfa_fcpim_add_iostats(lstats, rstats, fw_create);
bfa_fcpim_add_iostats(lstats, rstats, fw_delete);
bfa_fcpim_add_iostats(lstats, rstats, ioc_disabled);
bfa_fcpim_add_iostats(lstats, rstats, cleanup_comps);
bfa_fcpim_add_iostats(lstats, rstats, tm_cmnds);
bfa_fcpim_add_iostats(lstats, rstats, tm_fw_rsps);
bfa_fcpim_add_iostats(lstats, rstats, tm_success);
bfa_fcpim_add_iostats(lstats, rstats, tm_failures);
bfa_fcpim_add_iostats(lstats, rstats, tm_io_comps);
bfa_fcpim_add_iostats(lstats, rstats, tm_qresumes);
bfa_fcpim_add_iostats(lstats, rstats, tm_iocdowns);
bfa_fcpim_add_iostats(lstats, rstats, tm_cleanups);
bfa_fcpim_add_iostats(lstats, rstats, tm_cleanup_comps);
bfa_fcpim_add_iostats(lstats, rstats, io_comps);
bfa_fcpim_add_iostats(lstats, rstats, input_reqs);
bfa_fcpim_add_iostats(lstats, rstats, output_reqs);
bfa_fcpim_add_iostats(lstats, rstats, rd_throughput);
bfa_fcpim_add_iostats(lstats, rstats, wr_throughput);
}
void
bfa_fcpim_path_tov_set(struct bfa_s *bfa, u16 path_tov)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
fcpim->path_tov = path_tov * 1000;
if (fcpim->path_tov > BFA_FCPIM_PATHTOV_MAX)
fcpim->path_tov = BFA_FCPIM_PATHTOV_MAX;
}
u16
bfa_fcpim_path_tov_get(struct bfa_s *bfa)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
return fcpim->path_tov / 1000;
}
bfa_status_t
bfa_fcpim_port_iostats(struct bfa_s *bfa, struct bfa_itnim_iostats_s *stats,
u8 lp_tag)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct list_head *qe, *qen;
struct bfa_itnim_s *itnim;
/* accumulate IO stats from itnim */
memset(stats, 0, sizeof(struct bfa_itnim_iostats_s));
list_for_each_safe(qe, qen, &fcpim->itnim_q) {
itnim = (struct bfa_itnim_s *) qe;
if (itnim->rport->rport_info.lp_tag != lp_tag)
continue;
bfa_fcpim_add_stats(stats, &(itnim->stats));
}
return BFA_STATUS_OK;
}
bfa_status_t
bfa_fcpim_get_modstats(struct bfa_s *bfa, struct bfa_itnim_iostats_s *modstats)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct list_head *qe, *qen;
struct bfa_itnim_s *itnim;
/* accumulate IO stats from itnim */
memset(modstats, 0, sizeof(struct bfa_itnim_iostats_s));
list_for_each_safe(qe, qen, &fcpim->itnim_q) {
itnim = (struct bfa_itnim_s *) qe;
bfa_fcpim_add_stats(modstats, &(itnim->stats));
}
return BFA_STATUS_OK;
}
bfa_status_t
bfa_fcpim_get_del_itn_stats(struct bfa_s *bfa,
struct bfa_fcpim_del_itn_stats_s *modstats)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
*modstats = fcpim->del_itn_stats;
return BFA_STATUS_OK;
}
bfa_status_t
bfa_fcpim_profile_on(struct bfa_s *bfa, u32 time)
{
struct bfa_itnim_s *itnim;
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct list_head *qe, *qen;
/* accumulate IO stats from itnim */
list_for_each_safe(qe, qen, &fcpim->itnim_q) {
itnim = (struct bfa_itnim_s *) qe;
bfa_itnim_clear_stats(itnim);
}
fcpim->io_profile = BFA_TRUE;
fcpim->io_profile_start_time = time;
fcpim->profile_comp = bfa_ioim_profile_comp;
fcpim->profile_start = bfa_ioim_profile_start;
return BFA_STATUS_OK;
}
bfa_status_t
bfa_fcpim_profile_off(struct bfa_s *bfa)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
fcpim->io_profile = BFA_FALSE;
fcpim->io_profile_start_time = 0;
fcpim->profile_comp = NULL;
fcpim->profile_start = NULL;
return BFA_STATUS_OK;
}
bfa_status_t
bfa_fcpim_port_clear_iostats(struct bfa_s *bfa, u8 lp_tag)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct list_head *qe, *qen;
struct bfa_itnim_s *itnim;
/* clear IO stats from all active itnims */
list_for_each_safe(qe, qen, &fcpim->itnim_q) {
itnim = (struct bfa_itnim_s *) qe;
if (itnim->rport->rport_info.lp_tag != lp_tag)
continue;
bfa_itnim_clear_stats(itnim);
}
return BFA_STATUS_OK;
}
bfa_status_t
bfa_fcpim_clr_modstats(struct bfa_s *bfa)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct list_head *qe, *qen;
struct bfa_itnim_s *itnim;
/* clear IO stats from all active itnims */
list_for_each_safe(qe, qen, &fcpim->itnim_q) {
itnim = (struct bfa_itnim_s *) qe;
bfa_itnim_clear_stats(itnim);
}
memset(&fcpim->del_itn_stats, 0,
sizeof(struct bfa_fcpim_del_itn_stats_s));
return BFA_STATUS_OK;
}
void
bfa_fcpim_qdepth_set(struct bfa_s *bfa, u16 q_depth)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
bfa_assert(q_depth <= BFA_IOCFC_QDEPTH_MAX);
fcpim->q_depth = q_depth;
}
u16
bfa_fcpim_qdepth_get(struct bfa_s *bfa)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
return fcpim->q_depth;
}
void
bfa_fcpim_update_ioredirect(struct bfa_s *bfa)
{
bfa_boolean_t ioredirect;
/*
* IO redirection is turned off when QoS is enabled and vice versa
*/
ioredirect = bfa_fcport_is_qos_enabled(bfa) ? BFA_FALSE : BFA_TRUE;
}
void
bfa_fcpim_set_ioredirect(struct bfa_s *bfa, bfa_boolean_t state)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
fcpim->ioredirect = state;
}
/**
* BFA ITNIM module state machine functions
*/
/**
* Beginning/unallocated state - no events expected.
*/
static void
bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_CREATE:
bfa_sm_set_state(itnim, bfa_itnim_sm_created);
itnim->is_online = BFA_FALSE;
bfa_fcpim_additn(itnim);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Beginning state, only online event expected.
*/
static void
bfa_itnim_sm_created(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_ONLINE:
if (bfa_itnim_send_fwcreate(itnim))
bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
else
bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull);
break;
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
bfa_fcpim_delitn(itnim);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Waiting for itnim create response from firmware.
*/
static void
bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_FWRSP:
bfa_sm_set_state(itnim, bfa_itnim_sm_online);
itnim->is_online = BFA_TRUE;
bfa_itnim_iotov_online(itnim);
bfa_itnim_online_cb(itnim);
break;
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_delete_pending);
break;
case BFA_ITNIM_SM_OFFLINE:
if (bfa_itnim_send_fwdelete(itnim))
bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete);
else
bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
static void
bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_QRESUME:
bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
bfa_itnim_send_fwcreate(itnim);
break;
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
bfa_reqq_wcancel(&itnim->reqq_wait);
bfa_fcpim_delitn(itnim);
break;
case BFA_ITNIM_SM_OFFLINE:
bfa_sm_set_state(itnim, bfa_itnim_sm_offline);
bfa_reqq_wcancel(&itnim->reqq_wait);
bfa_itnim_offline_cb(itnim);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
bfa_reqq_wcancel(&itnim->reqq_wait);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Waiting for itnim create response from firmware, a delete is pending.
*/
static void
bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_FWRSP:
if (bfa_itnim_send_fwdelete(itnim))
bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
else
bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
bfa_fcpim_delitn(itnim);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Online state - normal parking state.
*/
static void
bfa_itnim_sm_online(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_OFFLINE:
bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline);
itnim->is_online = BFA_FALSE;
bfa_itnim_iotov_start(itnim);
bfa_itnim_cleanup(itnim);
break;
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete);
itnim->is_online = BFA_FALSE;
bfa_itnim_cleanup(itnim);
break;
case BFA_ITNIM_SM_SLER:
bfa_sm_set_state(itnim, bfa_itnim_sm_sler);
itnim->is_online = BFA_FALSE;
bfa_itnim_iotov_start(itnim);
bfa_itnim_sler_cb(itnim);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
itnim->is_online = BFA_FALSE;
bfa_itnim_iotov_start(itnim);
bfa_itnim_iocdisable_cleanup(itnim);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Second level error recovery need.
*/
static void
bfa_itnim_sm_sler(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_OFFLINE:
bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline);
bfa_itnim_cleanup(itnim);
break;
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete);
bfa_itnim_cleanup(itnim);
bfa_itnim_iotov_delete(itnim);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
bfa_itnim_iocdisable_cleanup(itnim);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Going offline. Waiting for active IO cleanup.
*/
static void
bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_CLEANUP:
if (bfa_itnim_send_fwdelete(itnim))
bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete);
else
bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull);
break;
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete);
bfa_itnim_iotov_delete(itnim);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
bfa_itnim_iocdisable_cleanup(itnim);
bfa_itnim_offline_cb(itnim);
break;
case BFA_ITNIM_SM_SLER:
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Deleting itnim. Waiting for active IO cleanup.
*/
static void
bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_CLEANUP:
if (bfa_itnim_send_fwdelete(itnim))
bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
else
bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
bfa_itnim_iocdisable_cleanup(itnim);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Rport offline. Fimrware itnim is being deleted - awaiting f/w response.
*/
static void
bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_FWRSP:
bfa_sm_set_state(itnim, bfa_itnim_sm_offline);
bfa_itnim_offline_cb(itnim);
break;
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
bfa_itnim_offline_cb(itnim);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
static void
bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_QRESUME:
bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete);
bfa_itnim_send_fwdelete(itnim);
break;
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
bfa_reqq_wcancel(&itnim->reqq_wait);
bfa_itnim_offline_cb(itnim);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Offline state.
*/
static void
bfa_itnim_sm_offline(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
bfa_itnim_iotov_delete(itnim);
bfa_fcpim_delitn(itnim);
break;
case BFA_ITNIM_SM_ONLINE:
if (bfa_itnim_send_fwcreate(itnim))
bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
else
bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* IOC h/w failed state.
*/
static void
bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_DELETE:
bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
bfa_itnim_iotov_delete(itnim);
bfa_fcpim_delitn(itnim);
break;
case BFA_ITNIM_SM_OFFLINE:
bfa_itnim_offline_cb(itnim);
break;
case BFA_ITNIM_SM_ONLINE:
if (bfa_itnim_send_fwcreate(itnim))
bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
else
bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull);
break;
case BFA_ITNIM_SM_HWFAIL:
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Itnim is deleted, waiting for firmware response to delete.
*/
static void
bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_FWRSP:
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
bfa_fcpim_delitn(itnim);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
static void
bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim,
enum bfa_itnim_event event)
{
bfa_trc(itnim->bfa, itnim->rport->rport_tag);
bfa_trc(itnim->bfa, event);
switch (event) {
case BFA_ITNIM_SM_QRESUME:
bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
bfa_itnim_send_fwdelete(itnim);
break;
case BFA_ITNIM_SM_HWFAIL:
bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
bfa_reqq_wcancel(&itnim->reqq_wait);
bfa_fcpim_delitn(itnim);
break;
default:
bfa_sm_fault(itnim->bfa, event);
}
}
/**
* Initiate cleanup of all IOs on an IOC failure.
*/
static void
bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim)
{
struct bfa_tskim_s *tskim;
struct bfa_ioim_s *ioim;
struct list_head *qe, *qen;
list_for_each_safe(qe, qen, &itnim->tsk_q) {
tskim = (struct bfa_tskim_s *) qe;
bfa_tskim_iocdisable(tskim);
}
list_for_each_safe(qe, qen, &itnim->io_q) {
ioim = (struct bfa_ioim_s *) qe;
bfa_ioim_iocdisable(ioim);
}
/**
* For IO request in pending queue, we pretend an early timeout.
*/
list_for_each_safe(qe, qen, &itnim->pending_q) {
ioim = (struct bfa_ioim_s *) qe;
bfa_ioim_tov(ioim);
}
list_for_each_safe(qe, qen, &itnim->io_cleanup_q) {
ioim = (struct bfa_ioim_s *) qe;
bfa_ioim_iocdisable(ioim);
}
}
/**
* IO cleanup completion
*/
static void
bfa_itnim_cleanp_comp(void *itnim_cbarg)
{
struct bfa_itnim_s *itnim = itnim_cbarg;
bfa_stats(itnim, cleanup_comps);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_CLEANUP);
}
/**
* Initiate cleanup of all IOs.
*/
static void
bfa_itnim_cleanup(struct bfa_itnim_s *itnim)
{
struct bfa_ioim_s *ioim;
struct bfa_tskim_s *tskim;
struct list_head *qe, *qen;
bfa_wc_init(&itnim->wc, bfa_itnim_cleanp_comp, itnim);
list_for_each_safe(qe, qen, &itnim->io_q) {
ioim = (struct bfa_ioim_s *) qe;
/**
* Move IO to a cleanup queue from active queue so that a later
* TM will not pickup this IO.
*/
list_del(&ioim->qe);
list_add_tail(&ioim->qe, &itnim->io_cleanup_q);
bfa_wc_up(&itnim->wc);
bfa_ioim_cleanup(ioim);
}
list_for_each_safe(qe, qen, &itnim->tsk_q) {
tskim = (struct bfa_tskim_s *) qe;
bfa_wc_up(&itnim->wc);
bfa_tskim_cleanup(tskim);
}
bfa_wc_wait(&itnim->wc);
}
static void
__bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete)
{
struct bfa_itnim_s *itnim = cbarg;
if (complete)
bfa_cb_itnim_online(itnim->ditn);
}
static void
__bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete)
{
struct bfa_itnim_s *itnim = cbarg;
if (complete)
bfa_cb_itnim_offline(itnim->ditn);
}
static void
__bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete)
{
struct bfa_itnim_s *itnim = cbarg;
if (complete)
bfa_cb_itnim_sler(itnim->ditn);
}
/**
* Call to resume any I/O requests waiting for room in request queue.
*/
static void
bfa_itnim_qresume(void *cbarg)
{
struct bfa_itnim_s *itnim = cbarg;
bfa_sm_send_event(itnim, BFA_ITNIM_SM_QRESUME);
}
/**
* bfa_itnim_public
*/
void
bfa_itnim_iodone(struct bfa_itnim_s *itnim)
{
bfa_wc_down(&itnim->wc);
}
void
bfa_itnim_tskdone(struct bfa_itnim_s *itnim)
{
bfa_wc_down(&itnim->wc);
}
void
bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
u32 *dm_len)
{
/**
* ITN memory
*/
*km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itnim_s);
}
void
bfa_itnim_attach(struct bfa_fcpim_mod_s *fcpim, struct bfa_meminfo_s *minfo)
{
struct bfa_s *bfa = fcpim->bfa;
struct bfa_itnim_s *itnim;
int i, j;
INIT_LIST_HEAD(&fcpim->itnim_q);
itnim = (struct bfa_itnim_s *) bfa_meminfo_kva(minfo);
fcpim->itnim_arr = itnim;
for (i = 0; i < fcpim->num_itnims; i++, itnim++) {
memset(itnim, 0, sizeof(struct bfa_itnim_s));
itnim->bfa = bfa;
itnim->fcpim = fcpim;
itnim->reqq = BFA_REQQ_QOS_LO;
itnim->rport = BFA_RPORT_FROM_TAG(bfa, i);
itnim->iotov_active = BFA_FALSE;
bfa_reqq_winit(&itnim->reqq_wait, bfa_itnim_qresume, itnim);
INIT_LIST_HEAD(&itnim->io_q);
INIT_LIST_HEAD(&itnim->io_cleanup_q);
INIT_LIST_HEAD(&itnim->pending_q);
INIT_LIST_HEAD(&itnim->tsk_q);
INIT_LIST_HEAD(&itnim->delay_comp_q);
for (j = 0; j < BFA_IOBUCKET_MAX; j++)
itnim->ioprofile.io_latency.min[j] = ~0;
bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
}
bfa_meminfo_kva(minfo) = (u8 *) itnim;
}
void
bfa_itnim_iocdisable(struct bfa_itnim_s *itnim)
{
bfa_stats(itnim, ioc_disabled);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_HWFAIL);
}
static bfa_boolean_t
bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim)
{
struct bfi_itnim_create_req_s *m;
itnim->msg_no++;
/**
* check for room in queue to send request now
*/
m = bfa_reqq_next(itnim->bfa, itnim->reqq);
if (!m) {
bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait);
return BFA_FALSE;
}
bfi_h2i_set(m->mh, BFI_MC_ITNIM, BFI_ITNIM_H2I_CREATE_REQ,
bfa_lpuid(itnim->bfa));
m->fw_handle = itnim->rport->fw_handle;
m->class = FC_CLASS_3;
m->seq_rec = itnim->seq_rec;
m->msg_no = itnim->msg_no;
bfa_stats(itnim, fw_create);
/**
* queue I/O message to firmware
*/
bfa_reqq_produce(itnim->bfa, itnim->reqq);
return BFA_TRUE;
}
static bfa_boolean_t
bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim)
{
struct bfi_itnim_delete_req_s *m;
/**
* check for room in queue to send request now
*/
m = bfa_reqq_next(itnim->bfa, itnim->reqq);
if (!m) {
bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait);
return BFA_FALSE;
}
bfi_h2i_set(m->mh, BFI_MC_ITNIM, BFI_ITNIM_H2I_DELETE_REQ,
bfa_lpuid(itnim->bfa));
m->fw_handle = itnim->rport->fw_handle;
bfa_stats(itnim, fw_delete);
/**
* queue I/O message to firmware
*/
bfa_reqq_produce(itnim->bfa, itnim->reqq);
return BFA_TRUE;
}
/**
* Cleanup all pending failed inflight requests.
*/
static void
bfa_itnim_delayed_comp(struct bfa_itnim_s *itnim, bfa_boolean_t iotov)
{
struct bfa_ioim_s *ioim;
struct list_head *qe, *qen;
list_for_each_safe(qe, qen, &itnim->delay_comp_q) {
ioim = (struct bfa_ioim_s *)qe;
bfa_ioim_delayed_comp(ioim, iotov);
}
}
/**
* Start all pending IO requests.
*/
static void
bfa_itnim_iotov_online(struct bfa_itnim_s *itnim)
{
struct bfa_ioim_s *ioim;
bfa_itnim_iotov_stop(itnim);
/**
* Abort all inflight IO requests in the queue
*/
bfa_itnim_delayed_comp(itnim, BFA_FALSE);
/**
* Start all pending IO requests.
*/
while (!list_empty(&itnim->pending_q)) {
bfa_q_deq(&itnim->pending_q, &ioim);
list_add_tail(&ioim->qe, &itnim->io_q);
bfa_ioim_start(ioim);
}
}
/**
* Fail all pending IO requests
*/
static void
bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim)
{
struct bfa_ioim_s *ioim;
/**
* Fail all inflight IO requests in the queue
*/
bfa_itnim_delayed_comp(itnim, BFA_TRUE);
/**
* Fail any pending IO requests.
*/
while (!list_empty(&itnim->pending_q)) {
bfa_q_deq(&itnim->pending_q, &ioim);
list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
bfa_ioim_tov(ioim);
}
}
/**
* IO TOV timer callback. Fail any pending IO requests.
*/
static void
bfa_itnim_iotov(void *itnim_arg)
{
struct bfa_itnim_s *itnim = itnim_arg;
itnim->iotov_active = BFA_FALSE;
bfa_cb_itnim_tov_begin(itnim->ditn);
bfa_itnim_iotov_cleanup(itnim);
bfa_cb_itnim_tov(itnim->ditn);
}
/**
* Start IO TOV timer for failing back pending IO requests in offline state.
*/
static void
bfa_itnim_iotov_start(struct bfa_itnim_s *itnim)
{
if (itnim->fcpim->path_tov > 0) {
itnim->iotov_active = BFA_TRUE;
bfa_assert(bfa_itnim_hold_io(itnim));
bfa_timer_start(itnim->bfa, &itnim->timer,
bfa_itnim_iotov, itnim, itnim->fcpim->path_tov);
}
}
/**
* Stop IO TOV timer.
*/
static void
bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim)
{
if (itnim->iotov_active) {
itnim->iotov_active = BFA_FALSE;
bfa_timer_stop(&itnim->timer);
}
}
/**
* Stop IO TOV timer.
*/
static void
bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim)
{
bfa_boolean_t pathtov_active = BFA_FALSE;
if (itnim->iotov_active)
pathtov_active = BFA_TRUE;
bfa_itnim_iotov_stop(itnim);
if (pathtov_active)
bfa_cb_itnim_tov_begin(itnim->ditn);
bfa_itnim_iotov_cleanup(itnim);
if (pathtov_active)
bfa_cb_itnim_tov(itnim->ditn);
}
static void
bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(itnim->bfa);
fcpim->del_itn_stats.del_itn_iocomp_aborted +=
itnim->stats.iocomp_aborted;
fcpim->del_itn_stats.del_itn_iocomp_timedout +=
itnim->stats.iocomp_timedout;
fcpim->del_itn_stats.del_itn_iocom_sqer_needed +=
itnim->stats.iocom_sqer_needed;
fcpim->del_itn_stats.del_itn_iocom_res_free +=
itnim->stats.iocom_res_free;
fcpim->del_itn_stats.del_itn_iocom_hostabrts +=
itnim->stats.iocom_hostabrts;
fcpim->del_itn_stats.del_itn_total_ios += itnim->stats.total_ios;
fcpim->del_itn_stats.del_io_iocdowns += itnim->stats.io_iocdowns;
fcpim->del_itn_stats.del_tm_iocdowns += itnim->stats.tm_iocdowns;
}
/**
* bfa_itnim_public
*/
/**
* Itnim interrupt processing.
*/
void
bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
union bfi_itnim_i2h_msg_u msg;
struct bfa_itnim_s *itnim;
bfa_trc(bfa, m->mhdr.msg_id);
msg.msg = m;
switch (m->mhdr.msg_id) {
case BFI_ITNIM_I2H_CREATE_RSP:
itnim = BFA_ITNIM_FROM_TAG(fcpim,
msg.create_rsp->bfa_handle);
bfa_assert(msg.create_rsp->status == BFA_STATUS_OK);
bfa_stats(itnim, create_comps);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
break;
case BFI_ITNIM_I2H_DELETE_RSP:
itnim = BFA_ITNIM_FROM_TAG(fcpim,
msg.delete_rsp->bfa_handle);
bfa_assert(msg.delete_rsp->status == BFA_STATUS_OK);
bfa_stats(itnim, delete_comps);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
break;
case BFI_ITNIM_I2H_SLER_EVENT:
itnim = BFA_ITNIM_FROM_TAG(fcpim,
msg.sler_event->bfa_handle);
bfa_stats(itnim, sler_events);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_SLER);
break;
default:
bfa_trc(bfa, m->mhdr.msg_id);
bfa_assert(0);
}
}
/**
* bfa_itnim_api
*/
struct bfa_itnim_s *
bfa_itnim_create(struct bfa_s *bfa, struct bfa_rport_s *rport, void *ditn)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct bfa_itnim_s *itnim;
itnim = BFA_ITNIM_FROM_TAG(fcpim, rport->rport_tag);
bfa_assert(itnim->rport == rport);
itnim->ditn = ditn;
bfa_stats(itnim, creates);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_CREATE);
return itnim;
}
void
bfa_itnim_delete(struct bfa_itnim_s *itnim)
{
bfa_stats(itnim, deletes);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_DELETE);
}
void
bfa_itnim_online(struct bfa_itnim_s *itnim, bfa_boolean_t seq_rec)
{
itnim->seq_rec = seq_rec;
bfa_stats(itnim, onlines);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_ONLINE);
}
void
bfa_itnim_offline(struct bfa_itnim_s *itnim)
{
bfa_stats(itnim, offlines);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_OFFLINE);
}
/**
* Return true if itnim is considered offline for holding off IO request.
* IO is not held if itnim is being deleted.
*/
bfa_boolean_t
bfa_itnim_hold_io(struct bfa_itnim_s *itnim)
{
return itnim->fcpim->path_tov && itnim->iotov_active &&
(bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwcreate) ||
bfa_sm_cmp_state(itnim, bfa_itnim_sm_sler) ||
bfa_sm_cmp_state(itnim, bfa_itnim_sm_cleanup_offline) ||
bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwdelete) ||
bfa_sm_cmp_state(itnim, bfa_itnim_sm_offline) ||
bfa_sm_cmp_state(itnim, bfa_itnim_sm_iocdisable));
}
bfa_status_t
bfa_itnim_get_ioprofile(struct bfa_itnim_s *itnim,
struct bfa_itnim_ioprofile_s *ioprofile)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(itnim->bfa);
if (!fcpim->io_profile)
return BFA_STATUS_IOPROFILE_OFF;
itnim->ioprofile.index = BFA_IOBUCKET_MAX;
itnim->ioprofile.io_profile_start_time =
bfa_io_profile_start_time(itnim->bfa);
itnim->ioprofile.clock_res_mul = bfa_io_lat_clock_res_mul;
itnim->ioprofile.clock_res_div = bfa_io_lat_clock_res_div;
*ioprofile = itnim->ioprofile;
return BFA_STATUS_OK;
}
void
bfa_itnim_get_stats(struct bfa_itnim_s *itnim,
struct bfa_itnim_iostats_s *stats)
{
*stats = itnim->stats;
}
void
bfa_itnim_clear_stats(struct bfa_itnim_s *itnim)
{
int j;
memset(&itnim->stats, 0, sizeof(itnim->stats));
memset(&itnim->ioprofile, 0, sizeof(itnim->ioprofile));
for (j = 0; j < BFA_IOBUCKET_MAX; j++)
itnim->ioprofile.io_latency.min[j] = ~0;
}
/**
* BFA IO module state machine functions
*/
/**
* IO is not started (unallocated).
*/
static void
bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc_fp(ioim->bfa, ioim->iotag);
bfa_trc_fp(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_START:
if (!bfa_itnim_is_online(ioim->itnim)) {
if (!bfa_itnim_hold_io(ioim->itnim)) {
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
list_del(&ioim->qe);
list_add_tail(&ioim->qe,
&ioim->fcpim->ioim_comp_q);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
__bfa_cb_ioim_pathtov, ioim);
} else {
list_del(&ioim->qe);
list_add_tail(&ioim->qe,
&ioim->itnim->pending_q);
}
break;
}
if (ioim->nsges > BFI_SGE_INLINE) {
if (!bfa_ioim_sge_setup(ioim)) {
bfa_sm_set_state(ioim, bfa_ioim_sm_sgalloc);
return;
}
}
if (!bfa_ioim_send_ioreq(ioim)) {
bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
break;
}
bfa_sm_set_state(ioim, bfa_ioim_sm_active);
break;
case BFA_IOIM_SM_IOTOV:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
__bfa_cb_ioim_pathtov, ioim);
break;
case BFA_IOIM_SM_ABORT:
/**
* IO in pending queue can get abort requests. Complete abort
* requests immediately.
*/
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_assert(bfa_q_is_on_q(&ioim->itnim->pending_q, ioim));
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
__bfa_cb_ioim_abort, ioim);
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* IO is waiting for SG pages.
*/
static void
bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_trc(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_SGALLOCED:
if (!bfa_ioim_send_ioreq(ioim)) {
bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
break;
}
bfa_sm_set_state(ioim, bfa_ioim_sm_active);
break;
case BFA_IOIM_SM_CLEANUP:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
ioim);
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_ABORT:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
ioim);
break;
case BFA_IOIM_SM_HWFAIL:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
ioim);
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* IO is active.
*/
static void
bfa_ioim_sm_active(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc_fp(ioim->bfa, ioim->iotag);
bfa_trc_fp(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_COMP_GOOD:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
__bfa_cb_ioim_good_comp, ioim);
break;
case BFA_IOIM_SM_COMP:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp,
ioim);
break;
case BFA_IOIM_SM_DONE:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp,
ioim);
break;
case BFA_IOIM_SM_ABORT:
ioim->iosp->abort_explicit = BFA_TRUE;
ioim->io_cbfn = __bfa_cb_ioim_abort;
if (bfa_ioim_send_abort(ioim))
bfa_sm_set_state(ioim, bfa_ioim_sm_abort);
else {
bfa_sm_set_state(ioim, bfa_ioim_sm_abort_qfull);
bfa_stats(ioim->itnim, qwait);
bfa_reqq_wait(ioim->bfa, ioim->reqq,
&ioim->iosp->reqq_wait);
}
break;
case BFA_IOIM_SM_CLEANUP:
ioim->iosp->abort_explicit = BFA_FALSE;
ioim->io_cbfn = __bfa_cb_ioim_failed;
if (bfa_ioim_send_abort(ioim))
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
else {
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
bfa_stats(ioim->itnim, qwait);
bfa_reqq_wait(ioim->bfa, ioim->reqq,
&ioim->iosp->reqq_wait);
}
break;
case BFA_IOIM_SM_HWFAIL:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
ioim);
break;
case BFA_IOIM_SM_SQRETRY:
if (bfa_ioim_get_iotag(ioim) != BFA_TRUE) {
/* max retry completed free IO */
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
__bfa_cb_ioim_failed, ioim);
break;
}
/* waiting for IO tag resource free */
bfa_sm_set_state(ioim, bfa_ioim_sm_cmnd_retry);
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* IO is retried with new tag.
*/
static void
bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc_fp(ioim->bfa, ioim->iotag);
bfa_trc_fp(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_FREE:
/* abts and rrq done. Now retry the IO with new tag */
if (!bfa_ioim_send_ioreq(ioim)) {
bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
break;
}
bfa_sm_set_state(ioim, bfa_ioim_sm_active);
break;
case BFA_IOIM_SM_CLEANUP:
ioim->iosp->abort_explicit = BFA_FALSE;
ioim->io_cbfn = __bfa_cb_ioim_failed;
if (bfa_ioim_send_abort(ioim))
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
else {
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
bfa_stats(ioim->itnim, qwait);
bfa_reqq_wait(ioim->bfa, ioim->reqq,
&ioim->iosp->reqq_wait);
}
break;
case BFA_IOIM_SM_HWFAIL:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
__bfa_cb_ioim_failed, ioim);
break;
case BFA_IOIM_SM_ABORT:
/** in this state IO abort is done.
* Waiting for IO tag resource free.
*/
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
ioim);
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* IO is being aborted, waiting for completion from firmware.
*/
static void
bfa_ioim_sm_abort(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_trc(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_COMP_GOOD:
case BFA_IOIM_SM_COMP:
case BFA_IOIM_SM_DONE:
case BFA_IOIM_SM_FREE:
break;
case BFA_IOIM_SM_ABORT_DONE:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
ioim);
break;
case BFA_IOIM_SM_ABORT_COMP:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
ioim);
break;
case BFA_IOIM_SM_COMP_UTAG:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
ioim);
break;
case BFA_IOIM_SM_CLEANUP:
bfa_assert(ioim->iosp->abort_explicit == BFA_TRUE);
ioim->iosp->abort_explicit = BFA_FALSE;
if (bfa_ioim_send_abort(ioim))
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
else {
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
bfa_stats(ioim->itnim, qwait);
bfa_reqq_wait(ioim->bfa, ioim->reqq,
&ioim->iosp->reqq_wait);
}
break;
case BFA_IOIM_SM_HWFAIL:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
ioim);
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* IO is being cleaned up (implicit abort), waiting for completion from
* firmware.
*/
static void
bfa_ioim_sm_cleanup(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_trc(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_COMP_GOOD:
case BFA_IOIM_SM_COMP:
case BFA_IOIM_SM_DONE:
case BFA_IOIM_SM_FREE:
break;
case BFA_IOIM_SM_ABORT:
/**
* IO is already being aborted implicitly
*/
ioim->io_cbfn = __bfa_cb_ioim_abort;
break;
case BFA_IOIM_SM_ABORT_DONE:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_ABORT_COMP:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_COMP_UTAG:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_HWFAIL:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
ioim);
break;
case BFA_IOIM_SM_CLEANUP:
/**
* IO can be in cleanup state already due to TM command.
* 2nd cleanup request comes from ITN offline event.
*/
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* IO is waiting for room in request CQ
*/
static void
bfa_ioim_sm_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_trc(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_QRESUME:
bfa_sm_set_state(ioim, bfa_ioim_sm_active);
bfa_ioim_send_ioreq(ioim);
break;
case BFA_IOIM_SM_ABORT:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
ioim);
break;
case BFA_IOIM_SM_CLEANUP:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
ioim);
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_HWFAIL:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
ioim);
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* Active IO is being aborted, waiting for room in request CQ.
*/
static void
bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_trc(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_QRESUME:
bfa_sm_set_state(ioim, bfa_ioim_sm_abort);
bfa_ioim_send_abort(ioim);
break;
case BFA_IOIM_SM_CLEANUP:
bfa_assert(ioim->iosp->abort_explicit == BFA_TRUE);
ioim->iosp->abort_explicit = BFA_FALSE;
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
break;
case BFA_IOIM_SM_COMP_GOOD:
case BFA_IOIM_SM_COMP:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
ioim);
break;
case BFA_IOIM_SM_DONE:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
ioim);
break;
case BFA_IOIM_SM_HWFAIL:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
ioim);
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* Active IO is being cleaned up, waiting for room in request CQ.
*/
static void
bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_trc(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_QRESUME:
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
bfa_ioim_send_abort(ioim);
break;
case BFA_IOIM_SM_ABORT:
/**
* IO is alraedy being cleaned up implicitly
*/
ioim->io_cbfn = __bfa_cb_ioim_abort;
break;
case BFA_IOIM_SM_COMP_GOOD:
case BFA_IOIM_SM_COMP:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_DONE:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_HWFAIL:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
bfa_ioim_move_to_comp_q(ioim);
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
ioim);
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* IO bfa callback is pending.
*/
static void
bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc_fp(ioim->bfa, ioim->iotag);
bfa_trc_fp(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_HCB:
bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
bfa_ioim_free(ioim);
break;
case BFA_IOIM_SM_CLEANUP:
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_HWFAIL:
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* IO bfa callback is pending. IO resource cannot be freed.
*/
static void
bfa_ioim_sm_hcb_free(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_trc(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_HCB:
bfa_sm_set_state(ioim, bfa_ioim_sm_resfree);
list_del(&ioim->qe);
list_add_tail(&ioim->qe, &ioim->fcpim->ioim_resfree_q);
break;
case BFA_IOIM_SM_FREE:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
break;
case BFA_IOIM_SM_CLEANUP:
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_HWFAIL:
bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* IO is completed, waiting resource free from firmware.
*/
static void
bfa_ioim_sm_resfree(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_trc(ioim->bfa, event);
switch (event) {
case BFA_IOIM_SM_FREE:
bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
bfa_ioim_free(ioim);
break;
case BFA_IOIM_SM_CLEANUP:
bfa_ioim_notify_cleanup(ioim);
break;
case BFA_IOIM_SM_HWFAIL:
break;
default:
bfa_sm_fault(ioim->bfa, event);
}
}
/**
* hal_ioim_private
*/
static void
__bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete)
{
struct bfa_ioim_s *ioim = cbarg;
if (!complete) {
bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
return;
}
bfa_cb_ioim_good_comp(ioim->bfa->bfad, ioim->dio);
}
static void
__bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete)
{
struct bfa_ioim_s *ioim = cbarg;
struct bfi_ioim_rsp_s *m;
u8 *snsinfo = NULL;
u8 sns_len = 0;
s32 residue = 0;
if (!complete) {
bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
return;
}
m = (struct bfi_ioim_rsp_s *) &ioim->iosp->comp_rspmsg;
if (m->io_status == BFI_IOIM_STS_OK) {
/**
* setup sense information, if present
*/
if ((m->scsi_status == SCSI_STATUS_CHECK_CONDITION) &&
m->sns_len) {
sns_len = m->sns_len;
snsinfo = ioim->iosp->snsinfo;
}
/**
* setup residue value correctly for normal completions
*/
if (m->resid_flags == FCP_RESID_UNDER) {
residue = be32_to_cpu(m->residue);
bfa_stats(ioim->itnim, iocomp_underrun);
}
if (m->resid_flags == FCP_RESID_OVER) {
residue = be32_to_cpu(m->residue);
residue = -residue;
bfa_stats(ioim->itnim, iocomp_overrun);
}
}
bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, m->io_status,
m->scsi_status, sns_len, snsinfo, residue);
}
static void
__bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete)
{
struct bfa_ioim_s *ioim = cbarg;
if (!complete) {
bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
return;
}
bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_ABORTED,
0, 0, NULL, 0);
}
static void
__bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete)
{
struct bfa_ioim_s *ioim = cbarg;
bfa_stats(ioim->itnim, path_tov_expired);
if (!complete) {
bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
return;
}
bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_PATHTOV,
0, 0, NULL, 0);
}
static void
__bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete)
{
struct bfa_ioim_s *ioim = cbarg;
if (!complete) {
bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
return;
}
bfa_cb_ioim_abort(ioim->bfa->bfad, ioim->dio);
}
static void
bfa_ioim_sgpg_alloced(void *cbarg)
{
struct bfa_ioim_s *ioim = cbarg;
ioim->nsgpgs = BFA_SGPG_NPAGE(ioim->nsges);
list_splice_tail_init(&ioim->iosp->sgpg_wqe.sgpg_q, &ioim->sgpg_q);
bfa_ioim_sgpg_setup(ioim);
bfa_sm_send_event(ioim, BFA_IOIM_SM_SGALLOCED);
}
/**
* Send I/O request to firmware.
*/
static bfa_boolean_t
bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim)
{
struct bfa_itnim_s *itnim = ioim->itnim;
struct bfi_ioim_req_s *m;
static struct fcp_cmnd_s cmnd_z0 = { 0 };
struct bfi_sge_s *sge;
u32 pgdlen = 0;
u32 fcp_dl;
u64 addr;
struct scatterlist *sg;
struct scsi_cmnd *cmnd = (struct scsi_cmnd *) ioim->dio;
/**
* check for room in queue to send request now
*/
m = bfa_reqq_next(ioim->bfa, ioim->reqq);
if (!m) {
bfa_stats(ioim->itnim, qwait);
bfa_reqq_wait(ioim->bfa, ioim->reqq,
&ioim->iosp->reqq_wait);
return BFA_FALSE;
}
/**
* build i/o request message next
*/
m->io_tag = cpu_to_be16(ioim->iotag);
m->rport_hdl = ioim->itnim->rport->fw_handle;
m->io_timeout = bfa_cb_ioim_get_timeout(ioim->dio);
/**
* build inline IO SG element here
*/
sge = &m->sges[0];
if (ioim->nsges) {
sg = (struct scatterlist *)scsi_sglist(cmnd);
addr = bfa_os_sgaddr(sg_dma_address(sg));
sge->sga = *(union bfi_addr_u *) &addr;
pgdlen = sg_dma_len(sg);
sge->sg_len = pgdlen;
sge->flags = (ioim->nsges > BFI_SGE_INLINE) ?
BFI_SGE_DATA_CPL : BFI_SGE_DATA_LAST;
bfa_sge_to_be(sge);
sge++;
}
if (ioim->nsges > BFI_SGE_INLINE) {
sge->sga = ioim->sgpg->sgpg_pa;
} else {
sge->sga.a32.addr_lo = 0;
sge->sga.a32.addr_hi = 0;
}
sge->sg_len = pgdlen;
sge->flags = BFI_SGE_PGDLEN;
bfa_sge_to_be(sge);
/**
* set up I/O command parameters
*/
m->cmnd = cmnd_z0;
m->cmnd.lun = bfa_cb_ioim_get_lun(ioim->dio);
m->cmnd.iodir = bfa_cb_ioim_get_iodir(ioim->dio);
m->cmnd.cdb = *(scsi_cdb_t *)bfa_cb_ioim_get_cdb(ioim->dio);
fcp_dl = bfa_cb_ioim_get_size(ioim->dio);
m->cmnd.fcp_dl = cpu_to_be32(fcp_dl);
/**
* set up I/O message header
*/
switch (m->cmnd.iodir) {
case FCP_IODIR_READ:
bfi_h2i_set(m->mh, BFI_MC_IOIM_READ, 0, bfa_lpuid(ioim->bfa));
bfa_stats(itnim, input_reqs);
ioim->itnim->stats.rd_throughput += fcp_dl;
break;
case FCP_IODIR_WRITE:
bfi_h2i_set(m->mh, BFI_MC_IOIM_WRITE, 0, bfa_lpuid(ioim->bfa));
bfa_stats(itnim, output_reqs);
ioim->itnim->stats.wr_throughput += fcp_dl;
break;
case FCP_IODIR_RW:
bfa_stats(itnim, input_reqs);
bfa_stats(itnim, output_reqs);
default:
bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_lpuid(ioim->bfa));
}
if (itnim->seq_rec ||
(bfa_cb_ioim_get_size(ioim->dio) & (sizeof(u32) - 1)))
bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_lpuid(ioim->bfa));
#ifdef IOIM_ADVANCED
m->cmnd.crn = bfa_cb_ioim_get_crn(ioim->dio);
m->cmnd.priority = bfa_cb_ioim_get_priority(ioim->dio);
m->cmnd.taskattr = bfa_cb_ioim_get_taskattr(ioim->dio);
/**
* Handle large CDB (>16 bytes).
*/
m->cmnd.addl_cdb_len = (bfa_cb_ioim_get_cdblen(ioim->dio) -
FCP_CMND_CDB_LEN) / sizeof(u32);
if (m->cmnd.addl_cdb_len) {
memcpy(&m->cmnd.cdb + 1, (scsi_cdb_t *)
bfa_cb_ioim_get_cdb(ioim->dio) + 1,
m->cmnd.addl_cdb_len * sizeof(u32));
fcp_cmnd_fcpdl(&m->cmnd) =
cpu_to_be32(bfa_cb_ioim_get_size(ioim->dio));
}
#endif
/**
* queue I/O message to firmware
*/
bfa_reqq_produce(ioim->bfa, ioim->reqq);
return BFA_TRUE;
}
/**
* Setup any additional SG pages needed.Inline SG element is setup
* at queuing time.
*/
static bfa_boolean_t
bfa_ioim_sge_setup(struct bfa_ioim_s *ioim)
{
u16 nsgpgs;
bfa_assert(ioim->nsges > BFI_SGE_INLINE);
/**
* allocate SG pages needed
*/
nsgpgs = BFA_SGPG_NPAGE(ioim->nsges);
if (!nsgpgs)
return BFA_TRUE;
if (bfa_sgpg_malloc(ioim->bfa, &ioim->sgpg_q, nsgpgs)
!= BFA_STATUS_OK) {
bfa_sgpg_wait(ioim->bfa, &ioim->iosp->sgpg_wqe, nsgpgs);
return BFA_FALSE;
}
ioim->nsgpgs = nsgpgs;
bfa_ioim_sgpg_setup(ioim);
return BFA_TRUE;
}
static void
bfa_ioim_sgpg_setup(struct bfa_ioim_s *ioim)
{
int sgeid, nsges, i;
struct bfi_sge_s *sge;
struct bfa_sgpg_s *sgpg;
u32 pgcumsz;
u64 addr;
struct scatterlist *sg;
struct scsi_cmnd *cmnd = (struct scsi_cmnd *) ioim->dio;
sgeid = BFI_SGE_INLINE;
ioim->sgpg = sgpg = bfa_q_first(&ioim->sgpg_q);
sg = scsi_sglist(cmnd);
sg = sg_next(sg);
do {
sge = sgpg->sgpg->sges;
nsges = ioim->nsges - sgeid;
if (nsges > BFI_SGPG_DATA_SGES)
nsges = BFI_SGPG_DATA_SGES;
pgcumsz = 0;
for (i = 0; i < nsges; i++, sge++, sgeid++, sg = sg_next(sg)) {
addr = bfa_os_sgaddr(sg_dma_address(sg));
sge->sga = *(union bfi_addr_u *) &addr;
sge->sg_len = sg_dma_len(sg);
pgcumsz += sge->sg_len;
/**
* set flags
*/
if (i < (nsges - 1))
sge->flags = BFI_SGE_DATA;
else if (sgeid < (ioim->nsges - 1))
sge->flags = BFI_SGE_DATA_CPL;
else
sge->flags = BFI_SGE_DATA_LAST;
bfa_sge_to_le(sge);
}
sgpg = (struct bfa_sgpg_s *) bfa_q_next(sgpg);
/**
* set the link element of each page
*/
if (sgeid == ioim->nsges) {
sge->flags = BFI_SGE_PGDLEN;
sge->sga.a32.addr_lo = 0;
sge->sga.a32.addr_hi = 0;
} else {
sge->flags = BFI_SGE_LINK;
sge->sga = sgpg->sgpg_pa;
}
sge->sg_len = pgcumsz;
bfa_sge_to_le(sge);
} while (sgeid < ioim->nsges);
}
/**
* Send I/O abort request to firmware.
*/
static bfa_boolean_t
bfa_ioim_send_abort(struct bfa_ioim_s *ioim)
{
struct bfi_ioim_abort_req_s *m;
enum bfi_ioim_h2i msgop;
/**
* check for room in queue to send request now
*/
m = bfa_reqq_next(ioim->bfa, ioim->reqq);
if (!m)
return BFA_FALSE;
/**
* build i/o request message next
*/
if (ioim->iosp->abort_explicit)
msgop = BFI_IOIM_H2I_IOABORT_REQ;
else
msgop = BFI_IOIM_H2I_IOCLEANUP_REQ;
bfi_h2i_set(m->mh, BFI_MC_IOIM, msgop, bfa_lpuid(ioim->bfa));
m->io_tag = cpu_to_be16(ioim->iotag);
m->abort_tag = ++ioim->abort_tag;
/**
* queue I/O message to firmware
*/
bfa_reqq_produce(ioim->bfa, ioim->reqq);
return BFA_TRUE;
}
/**
* Call to resume any I/O requests waiting for room in request queue.
*/
static void
bfa_ioim_qresume(void *cbarg)
{
struct bfa_ioim_s *ioim = cbarg;
bfa_stats(ioim->itnim, qresumes);
bfa_sm_send_event(ioim, BFA_IOIM_SM_QRESUME);
}
static void
bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim)
{
/**
* Move IO from itnim queue to fcpim global queue since itnim will be
* freed.
*/
list_del(&ioim->qe);
list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
if (!ioim->iosp->tskim) {
if (ioim->fcpim->delay_comp && ioim->itnim->iotov_active) {
bfa_cb_dequeue(&ioim->hcb_qe);
list_del(&ioim->qe);
list_add_tail(&ioim->qe, &ioim->itnim->delay_comp_q);
}
bfa_itnim_iodone(ioim->itnim);
} else
bfa_tskim_iodone(ioim->iosp->tskim);
}
static bfa_boolean_t
bfa_ioim_is_abortable(struct bfa_ioim_s *ioim)
{
if ((bfa_sm_cmp_state(ioim, bfa_ioim_sm_uninit) &&
(!bfa_q_is_on_q(&ioim->itnim->pending_q, ioim))) ||
(bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort)) ||
(bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort_qfull)) ||
(bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb)) ||
(bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb_free)) ||
(bfa_sm_cmp_state(ioim, bfa_ioim_sm_resfree)))
return BFA_FALSE;
return BFA_TRUE;
}
/**
* or after the link comes back.
*/
void
bfa_ioim_delayed_comp(struct bfa_ioim_s *ioim, bfa_boolean_t iotov)
{
/**
* If path tov timer expired, failback with PATHTOV status - these
* IO requests are not normally retried by IO stack.
*
* Otherwise device cameback online and fail it with normal failed
* status so that IO stack retries these failed IO requests.
*/
if (iotov)
ioim->io_cbfn = __bfa_cb_ioim_pathtov;
else {
ioim->io_cbfn = __bfa_cb_ioim_failed;
bfa_stats(ioim->itnim, iocom_nexus_abort);
}
bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
/**
* Move IO to fcpim global queue since itnim will be
* freed.
*/
list_del(&ioim->qe);
list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
}
/**
* hal_ioim_friend
*/
/**
* Memory allocation and initialization.
*/
void
bfa_ioim_attach(struct bfa_fcpim_mod_s *fcpim, struct bfa_meminfo_s *minfo)
{
struct bfa_ioim_s *ioim;
struct bfa_ioim_sp_s *iosp;
u16 i;
u8 *snsinfo;
u32 snsbufsz;
/**
* claim memory first
*/
ioim = (struct bfa_ioim_s *) bfa_meminfo_kva(minfo);
fcpim->ioim_arr = ioim;
bfa_meminfo_kva(minfo) = (u8 *) (ioim + fcpim->num_ioim_reqs);
iosp = (struct bfa_ioim_sp_s *) bfa_meminfo_kva(minfo);
fcpim->ioim_sp_arr = iosp;
bfa_meminfo_kva(minfo) = (u8 *) (iosp + fcpim->num_ioim_reqs);
/**
* Claim DMA memory for per IO sense data.
*/
snsbufsz = fcpim->num_ioim_reqs * BFI_IOIM_SNSLEN;
fcpim->snsbase.pa = bfa_meminfo_dma_phys(minfo);
bfa_meminfo_dma_phys(minfo) += snsbufsz;
fcpim->snsbase.kva = bfa_meminfo_dma_virt(minfo);
bfa_meminfo_dma_virt(minfo) += snsbufsz;
snsinfo = fcpim->snsbase.kva;
bfa_iocfc_set_snsbase(fcpim->bfa, fcpim->snsbase.pa);
/**
* Initialize ioim free queues
*/
INIT_LIST_HEAD(&fcpim->ioim_free_q);
INIT_LIST_HEAD(&fcpim->ioim_resfree_q);
INIT_LIST_HEAD(&fcpim->ioim_comp_q);
for (i = 0; i < fcpim->num_ioim_reqs;
i++, ioim++, iosp++, snsinfo += BFI_IOIM_SNSLEN) {
/*
* initialize IOIM
*/
memset(ioim, 0, sizeof(struct bfa_ioim_s));
ioim->iotag = i;
ioim->bfa = fcpim->bfa;
ioim->fcpim = fcpim;
ioim->iosp = iosp;
iosp->snsinfo = snsinfo;
INIT_LIST_HEAD(&ioim->sgpg_q);
bfa_reqq_winit(&ioim->iosp->reqq_wait,
bfa_ioim_qresume, ioim);
bfa_sgpg_winit(&ioim->iosp->sgpg_wqe,
bfa_ioim_sgpg_alloced, ioim);
bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
list_add_tail(&ioim->qe, &fcpim->ioim_free_q);
}
}
/**
* Driver detach time call.
*/
void
bfa_ioim_detach(struct bfa_fcpim_mod_s *fcpim)
{
}
void
bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m;
struct bfa_ioim_s *ioim;
u16 iotag;
enum bfa_ioim_event evt = BFA_IOIM_SM_COMP;
iotag = be16_to_cpu(rsp->io_tag);
ioim = BFA_IOIM_FROM_TAG(fcpim, iotag);
bfa_assert(ioim->iotag == iotag);
bfa_trc(ioim->bfa, ioim->iotag);
bfa_trc(ioim->bfa, rsp->io_status);
bfa_trc(ioim->bfa, rsp->reuse_io_tag);
if (bfa_sm_cmp_state(ioim, bfa_ioim_sm_active))
ioim->iosp->comp_rspmsg = *m;
switch (rsp->io_status) {
case BFI_IOIM_STS_OK:
bfa_stats(ioim->itnim, iocomp_ok);
if (rsp->reuse_io_tag == 0)
evt = BFA_IOIM_SM_DONE;
else
evt = BFA_IOIM_SM_COMP;
break;
case BFI_IOIM_STS_TIMEDOUT:
bfa_stats(ioim->itnim, iocomp_timedout);
case BFI_IOIM_STS_ABORTED:
rsp->io_status = BFI_IOIM_STS_ABORTED;
bfa_stats(ioim->itnim, iocomp_aborted);
if (rsp->reuse_io_tag == 0)
evt = BFA_IOIM_SM_DONE;
else
evt = BFA_IOIM_SM_COMP;
break;
case BFI_IOIM_STS_PROTO_ERR:
bfa_stats(ioim->itnim, iocom_proto_err);
bfa_assert(rsp->reuse_io_tag);
evt = BFA_IOIM_SM_COMP;
break;
case BFI_IOIM_STS_SQER_NEEDED:
bfa_stats(ioim->itnim, iocom_sqer_needed);
bfa_assert(rsp->reuse_io_tag == 0);
evt = BFA_IOIM_SM_SQRETRY;
break;
case BFI_IOIM_STS_RES_FREE:
bfa_stats(ioim->itnim, iocom_res_free);
evt = BFA_IOIM_SM_FREE;
break;
case BFI_IOIM_STS_HOST_ABORTED:
bfa_stats(ioim->itnim, iocom_hostabrts);
if (rsp->abort_tag != ioim->abort_tag) {
bfa_trc(ioim->bfa, rsp->abort_tag);
bfa_trc(ioim->bfa, ioim->abort_tag);
return;
}
if (rsp->reuse_io_tag)
evt = BFA_IOIM_SM_ABORT_COMP;
else
evt = BFA_IOIM_SM_ABORT_DONE;
break;
case BFI_IOIM_STS_UTAG:
bfa_stats(ioim->itnim, iocom_utags);
evt = BFA_IOIM_SM_COMP_UTAG;
break;
default:
bfa_assert(0);
}
bfa_sm_send_event(ioim, evt);
}
void
bfa_ioim_good_comp_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m;
struct bfa_ioim_s *ioim;
u16 iotag;
iotag = be16_to_cpu(rsp->io_tag);
ioim = BFA_IOIM_FROM_TAG(fcpim, iotag);
bfa_assert(ioim->iotag == iotag);
bfa_trc_fp(ioim->bfa, ioim->iotag);
bfa_ioim_cb_profile_comp(fcpim, ioim);
bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
}
void
bfa_ioim_profile_start(struct bfa_ioim_s *ioim)
{
ioim->start_time = jiffies;
}
void
bfa_ioim_profile_comp(struct bfa_ioim_s *ioim)
{
u32 fcp_dl = bfa_cb_ioim_get_size(ioim->dio);
u32 index = bfa_ioim_get_index(fcp_dl);
u64 end_time = jiffies;
struct bfa_itnim_latency_s *io_lat =
&(ioim->itnim->ioprofile.io_latency);
u32 val = (u32)(end_time - ioim->start_time);
bfa_itnim_ioprofile_update(ioim->itnim, index);
io_lat->count[index]++;
io_lat->min[index] = (io_lat->min[index] < val) ?
io_lat->min[index] : val;
io_lat->max[index] = (io_lat->max[index] > val) ?
io_lat->max[index] : val;
io_lat->avg[index] += val;
}
/**
* Called by itnim to clean up IO while going offline.
*/
void
bfa_ioim_cleanup(struct bfa_ioim_s *ioim)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_stats(ioim->itnim, io_cleanups);
ioim->iosp->tskim = NULL;
bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP);
}
void
bfa_ioim_cleanup_tm(struct bfa_ioim_s *ioim, struct bfa_tskim_s *tskim)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_stats(ioim->itnim, io_tmaborts);
ioim->iosp->tskim = tskim;
bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP);
}
/**
* IOC failure handling.
*/
void
bfa_ioim_iocdisable(struct bfa_ioim_s *ioim)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_stats(ioim->itnim, io_iocdowns);
bfa_sm_send_event(ioim, BFA_IOIM_SM_HWFAIL);
}
/**
* IO offline TOV popped. Fail the pending IO.
*/
void
bfa_ioim_tov(struct bfa_ioim_s *ioim)
{
bfa_trc(ioim->bfa, ioim->iotag);
bfa_sm_send_event(ioim, BFA_IOIM_SM_IOTOV);
}
/**
* hal_ioim_api
*/
/**
* Allocate IOIM resource for initiator mode I/O request.
*/
struct bfa_ioim_s *
bfa_ioim_alloc(struct bfa_s *bfa, struct bfad_ioim_s *dio,
struct bfa_itnim_s *itnim, u16 nsges)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct bfa_ioim_s *ioim;
/**
* alocate IOIM resource
*/
bfa_q_deq(&fcpim->ioim_free_q, &ioim);
if (!ioim) {
bfa_stats(itnim, no_iotags);
return NULL;
}
ioim->dio = dio;
ioim->itnim = itnim;
ioim->nsges = nsges;
ioim->nsgpgs = 0;
bfa_stats(itnim, total_ios);
fcpim->ios_active++;
list_add_tail(&ioim->qe, &itnim->io_q);
bfa_trc_fp(ioim->bfa, ioim->iotag);
return ioim;
}
void
bfa_ioim_free(struct bfa_ioim_s *ioim)
{
struct bfa_fcpim_mod_s *fcpim = ioim->fcpim;
bfa_trc_fp(ioim->bfa, ioim->iotag);
bfa_assert_fp(bfa_sm_cmp_state(ioim, bfa_ioim_sm_uninit));
bfa_assert_fp(list_empty(&ioim->sgpg_q) ||
(ioim->nsges > BFI_SGE_INLINE));
if (ioim->nsgpgs > 0)
bfa_sgpg_mfree(ioim->bfa, &ioim->sgpg_q, ioim->nsgpgs);
bfa_stats(ioim->itnim, io_comps);
fcpim->ios_active--;
list_del(&ioim->qe);
list_add_tail(&ioim->qe, &fcpim->ioim_free_q);
}
void
bfa_ioim_start(struct bfa_ioim_s *ioim)
{
bfa_trc_fp(ioim->bfa, ioim->iotag);
bfa_ioim_cb_profile_start(ioim->fcpim, ioim);
/**
* Obtain the queue over which this request has to be issued
*/
ioim->reqq = bfa_fcpim_ioredirect_enabled(ioim->bfa) ?
bfa_cb_ioim_get_reqq(ioim->dio) :
bfa_itnim_get_reqq(ioim);
bfa_sm_send_event(ioim, BFA_IOIM_SM_START);
}
/**
* Driver I/O abort request.
*/
bfa_status_t
bfa_ioim_abort(struct bfa_ioim_s *ioim)
{
bfa_trc(ioim->bfa, ioim->iotag);
if (!bfa_ioim_is_abortable(ioim))
return BFA_STATUS_FAILED;
bfa_stats(ioim->itnim, io_aborts);
bfa_sm_send_event(ioim, BFA_IOIM_SM_ABORT);
return BFA_STATUS_OK;
}
/**
* BFA TSKIM state machine functions
*/
/**
* Task management command beginning state.
*/
static void
bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
{
bfa_trc(tskim->bfa, event);
switch (event) {
case BFA_TSKIM_SM_START:
bfa_sm_set_state(tskim, bfa_tskim_sm_active);
bfa_tskim_gather_ios(tskim);
/**
* If device is offline, do not send TM on wire. Just cleanup
* any pending IO requests and complete TM request.
*/
if (!bfa_itnim_is_online(tskim->itnim)) {
bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
tskim->tsk_status = BFI_TSKIM_STS_OK;
bfa_tskim_cleanup_ios(tskim);
return;
}
if (!bfa_tskim_send(tskim)) {
bfa_sm_set_state(tskim, bfa_tskim_sm_qfull);
bfa_stats(tskim->itnim, tm_qwait);
bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
&tskim->reqq_wait);
}
break;
default:
bfa_sm_fault(tskim->bfa, event);
}
}
/**
* brief
* TM command is active, awaiting completion from firmware to
* cleanup IO requests in TM scope.
*/
static void
bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
{
bfa_trc(tskim->bfa, event);
switch (event) {
case BFA_TSKIM_SM_DONE:
bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
bfa_tskim_cleanup_ios(tskim);
break;
case BFA_TSKIM_SM_CLEANUP:
bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
if (!bfa_tskim_send_abort(tskim)) {
bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup_qfull);
bfa_stats(tskim->itnim, tm_qwait);
bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
&tskim->reqq_wait);
}
break;
case BFA_TSKIM_SM_HWFAIL:
bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
bfa_tskim_iocdisable_ios(tskim);
bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
break;
default:
bfa_sm_fault(tskim->bfa, event);
}
}
/**
* An active TM is being cleaned up since ITN is offline. Awaiting cleanup
* completion event from firmware.
*/
static void
bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
{
bfa_trc(tskim->bfa, event);
switch (event) {
case BFA_TSKIM_SM_DONE:
/**
* Ignore and wait for ABORT completion from firmware.
*/
break;
case BFA_TSKIM_SM_CLEANUP_DONE:
bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
bfa_tskim_cleanup_ios(tskim);
break;
case BFA_TSKIM_SM_HWFAIL:
bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
bfa_tskim_iocdisable_ios(tskim);
bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
break;
default:
bfa_sm_fault(tskim->bfa, event);
}
}
static void
bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
{
bfa_trc(tskim->bfa, event);
switch (event) {
case BFA_TSKIM_SM_IOS_DONE:
bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
bfa_tskim_qcomp(tskim, __bfa_cb_tskim_done);
break;
case BFA_TSKIM_SM_CLEANUP:
/**
* Ignore, TM command completed on wire.
* Notify TM conmpletion on IO cleanup completion.
*/
break;
case BFA_TSKIM_SM_HWFAIL:
bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
bfa_tskim_iocdisable_ios(tskim);
bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
break;
default:
bfa_sm_fault(tskim->bfa, event);
}
}
/**
* Task management command is waiting for room in request CQ
*/
static void
bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
{
bfa_trc(tskim->bfa, event);
switch (event) {
case BFA_TSKIM_SM_QRESUME:
bfa_sm_set_state(tskim, bfa_tskim_sm_active);
bfa_tskim_send(tskim);
break;
case BFA_TSKIM_SM_CLEANUP:
/**
* No need to send TM on wire since ITN is offline.
*/
bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
bfa_reqq_wcancel(&tskim->reqq_wait);
bfa_tskim_cleanup_ios(tskim);
break;
case BFA_TSKIM_SM_HWFAIL:
bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
bfa_reqq_wcancel(&tskim->reqq_wait);
bfa_tskim_iocdisable_ios(tskim);
bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
break;
default:
bfa_sm_fault(tskim->bfa, event);
}
}
/**
* Task management command is active, awaiting for room in request CQ
* to send clean up request.
*/
static void
bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
enum bfa_tskim_event event)
{
bfa_trc(tskim->bfa, event);
switch (event) {
case BFA_TSKIM_SM_DONE:
bfa_reqq_wcancel(&tskim->reqq_wait);
/**
*
* Fall through !!!
*/
case BFA_TSKIM_SM_QRESUME:
bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
bfa_tskim_send_abort(tskim);
break;
case BFA_TSKIM_SM_HWFAIL:
bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
bfa_reqq_wcancel(&tskim->reqq_wait);
bfa_tskim_iocdisable_ios(tskim);
bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
break;
default:
bfa_sm_fault(tskim->bfa, event);
}
}
/**
* BFA callback is pending
*/
static void
bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
{
bfa_trc(tskim->bfa, event);
switch (event) {
case BFA_TSKIM_SM_HCB:
bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
bfa_tskim_free(tskim);
break;
case BFA_TSKIM_SM_CLEANUP:
bfa_tskim_notify_comp(tskim);
break;
case BFA_TSKIM_SM_HWFAIL:
break;
default:
bfa_sm_fault(tskim->bfa, event);
}
}
/**
* hal_tskim_private
*/
static void
__bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete)
{
struct bfa_tskim_s *tskim = cbarg;
if (!complete) {
bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
return;
}
bfa_stats(tskim->itnim, tm_success);
bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, tskim->tsk_status);
}
static void
__bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete)
{
struct bfa_tskim_s *tskim = cbarg;
if (!complete) {
bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
return;
}
bfa_stats(tskim->itnim, tm_failures);
bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk,
BFI_TSKIM_STS_FAILED);
}
static bfa_boolean_t
bfa_tskim_match_scope(struct bfa_tskim_s *tskim, lun_t lun)
{
switch (tskim->tm_cmnd) {
case FCP_TM_TARGET_RESET:
return BFA_TRUE;
case FCP_TM_ABORT_TASK_SET:
case FCP_TM_CLEAR_TASK_SET:
case FCP_TM_LUN_RESET:
case FCP_TM_CLEAR_ACA:
return (tskim->lun == lun);
default:
bfa_assert(0);
}
return BFA_FALSE;
}
/**
* Gather affected IO requests and task management commands.
*/
static void
bfa_tskim_gather_ios(struct bfa_tskim_s *tskim)
{
struct bfa_itnim_s *itnim = tskim->itnim;
struct bfa_ioim_s *ioim;
struct list_head *qe, *qen;
INIT_LIST_HEAD(&tskim->io_q);
/**
* Gather any active IO requests first.
*/
list_for_each_safe(qe, qen, &itnim->io_q) {
ioim = (struct bfa_ioim_s *) qe;
if (bfa_tskim_match_scope
(tskim, bfa_cb_ioim_get_lun(ioim->dio))) {
list_del(&ioim->qe);
list_add_tail(&ioim->qe, &tskim->io_q);
}
}
/**
* Failback any pending IO requests immediately.
*/
list_for_each_safe(qe, qen, &itnim->pending_q) {
ioim = (struct bfa_ioim_s *) qe;
if (bfa_tskim_match_scope
(tskim, bfa_cb_ioim_get_lun(ioim->dio))) {
list_del(&ioim->qe);
list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
bfa_ioim_tov(ioim);
}
}
}
/**
* IO cleanup completion
*/
static void
bfa_tskim_cleanp_comp(void *tskim_cbarg)
{
struct bfa_tskim_s *tskim = tskim_cbarg;
bfa_stats(tskim->itnim, tm_io_comps);
bfa_sm_send_event(tskim, BFA_TSKIM_SM_IOS_DONE);
}
/**
* Gather affected IO requests and task management commands.
*/
static void
bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim)
{
struct bfa_ioim_s *ioim;
struct list_head *qe, *qen;
bfa_wc_init(&tskim->wc, bfa_tskim_cleanp_comp, tskim);
list_for_each_safe(qe, qen, &tskim->io_q) {
ioim = (struct bfa_ioim_s *) qe;
bfa_wc_up(&tskim->wc);
bfa_ioim_cleanup_tm(ioim, tskim);
}
bfa_wc_wait(&tskim->wc);
}
/**
* Send task management request to firmware.
*/
static bfa_boolean_t
bfa_tskim_send(struct bfa_tskim_s *tskim)
{
struct bfa_itnim_s *itnim = tskim->itnim;
struct bfi_tskim_req_s *m;
/**
* check for room in queue to send request now
*/
m = bfa_reqq_next(tskim->bfa, itnim->reqq);
if (!m)
return BFA_FALSE;
/**
* build i/o request message next
*/
bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_TM_REQ,
bfa_lpuid(tskim->bfa));
m->tsk_tag = cpu_to_be16(tskim->tsk_tag);
m->itn_fhdl = tskim->itnim->rport->fw_handle;
m->t_secs = tskim->tsecs;
m->lun = tskim->lun;
m->tm_flags = tskim->tm_cmnd;
/**
* queue I/O message to firmware
*/
bfa_reqq_produce(tskim->bfa, itnim->reqq);
return BFA_TRUE;
}
/**
* Send abort request to cleanup an active TM to firmware.
*/
static bfa_boolean_t
bfa_tskim_send_abort(struct bfa_tskim_s *tskim)
{
struct bfa_itnim_s *itnim = tskim->itnim;
struct bfi_tskim_abortreq_s *m;
/**
* check for room in queue to send request now
*/
m = bfa_reqq_next(tskim->bfa, itnim->reqq);
if (!m)
return BFA_FALSE;
/**
* build i/o request message next
*/
bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_ABORT_REQ,
bfa_lpuid(tskim->bfa));
m->tsk_tag = cpu_to_be16(tskim->tsk_tag);
/**
* queue I/O message to firmware
*/
bfa_reqq_produce(tskim->bfa, itnim->reqq);
return BFA_TRUE;
}
/**
* Call to resume task management cmnd waiting for room in request queue.
*/
static void
bfa_tskim_qresume(void *cbarg)
{
struct bfa_tskim_s *tskim = cbarg;
bfa_stats(tskim->itnim, tm_qresumes);
bfa_sm_send_event(tskim, BFA_TSKIM_SM_QRESUME);
}
/**
* Cleanup IOs associated with a task mangement command on IOC failures.
*/
static void
bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim)
{
struct bfa_ioim_s *ioim;
struct list_head *qe, *qen;
list_for_each_safe(qe, qen, &tskim->io_q) {
ioim = (struct bfa_ioim_s *) qe;
bfa_ioim_iocdisable(ioim);
}
}
/**
* hal_tskim_friend
*/
/**
* Notification on completions from related ioim.
*/
void
bfa_tskim_iodone(struct bfa_tskim_s *tskim)
{
bfa_wc_down(&tskim->wc);
}
/**
* Handle IOC h/w failure notification from itnim.
*/
void
bfa_tskim_iocdisable(struct bfa_tskim_s *tskim)
{
tskim->notify = BFA_FALSE;
bfa_stats(tskim->itnim, tm_iocdowns);
bfa_sm_send_event(tskim, BFA_TSKIM_SM_HWFAIL);
}
/**
* Cleanup TM command and associated IOs as part of ITNIM offline.
*/
void
bfa_tskim_cleanup(struct bfa_tskim_s *tskim)
{
tskim->notify = BFA_TRUE;
bfa_stats(tskim->itnim, tm_cleanups);
bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP);
}
/**
* Memory allocation and initialization.
*/
void
bfa_tskim_attach(struct bfa_fcpim_mod_s *fcpim, struct bfa_meminfo_s *minfo)
{
struct bfa_tskim_s *tskim;
u16 i;
INIT_LIST_HEAD(&fcpim->tskim_free_q);
tskim = (struct bfa_tskim_s *) bfa_meminfo_kva(minfo);
fcpim->tskim_arr = tskim;
for (i = 0; i < fcpim->num_tskim_reqs; i++, tskim++) {
/*
* initialize TSKIM
*/
memset(tskim, 0, sizeof(struct bfa_tskim_s));
tskim->tsk_tag = i;
tskim->bfa = fcpim->bfa;
tskim->fcpim = fcpim;
tskim->notify = BFA_FALSE;
bfa_reqq_winit(&tskim->reqq_wait, bfa_tskim_qresume,
tskim);
bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
list_add_tail(&tskim->qe, &fcpim->tskim_free_q);
}
bfa_meminfo_kva(minfo) = (u8 *) tskim;
}
void
bfa_tskim_detach(struct bfa_fcpim_mod_s *fcpim)
{
/**
* @todo
*/
}
void
bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct bfi_tskim_rsp_s *rsp = (struct bfi_tskim_rsp_s *) m;
struct bfa_tskim_s *tskim;
u16 tsk_tag = be16_to_cpu(rsp->tsk_tag);
tskim = BFA_TSKIM_FROM_TAG(fcpim, tsk_tag);
bfa_assert(tskim->tsk_tag == tsk_tag);
tskim->tsk_status = rsp->tsk_status;
/**
* Firmware sends BFI_TSKIM_STS_ABORTED status for abort
* requests. All other statuses are for normal completions.
*/
if (rsp->tsk_status == BFI_TSKIM_STS_ABORTED) {
bfa_stats(tskim->itnim, tm_cleanup_comps);
bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP_DONE);
} else {
bfa_stats(tskim->itnim, tm_fw_rsps);
bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE);
}
}
/**
* hal_tskim_api
*/
struct bfa_tskim_s *
bfa_tskim_alloc(struct bfa_s *bfa, struct bfad_tskim_s *dtsk)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
struct bfa_tskim_s *tskim;
bfa_q_deq(&fcpim->tskim_free_q, &tskim);
if (tskim)
tskim->dtsk = dtsk;
return tskim;
}
void
bfa_tskim_free(struct bfa_tskim_s *tskim)
{
bfa_assert(bfa_q_is_on_q_func(&tskim->itnim->tsk_q, &tskim->qe));
list_del(&tskim->qe);
list_add_tail(&tskim->qe, &tskim->fcpim->tskim_free_q);
}
/**
* Start a task management command.
*
* @param[in] tskim BFA task management command instance
* @param[in] itnim i-t nexus for the task management command
* @param[in] lun lun, if applicable
* @param[in] tm_cmnd Task management command code.
* @param[in] t_secs Timeout in seconds
*
* @return None.
*/
void
bfa_tskim_start(struct bfa_tskim_s *tskim, struct bfa_itnim_s *itnim, lun_t lun,
enum fcp_tm_cmnd tm_cmnd, u8 tsecs)
{
tskim->itnim = itnim;
tskim->lun = lun;
tskim->tm_cmnd = tm_cmnd;
tskim->tsecs = tsecs;
tskim->notify = BFA_FALSE;
bfa_stats(itnim, tm_cmnds);
list_add_tail(&tskim->qe, &itnim->tsk_q);
bfa_sm_send_event(tskim, BFA_TSKIM_SM_START);
}
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