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linux/drivers/scsi/bfa/bfa_fcpim.c
Arnd Bergmann aa22a52e18 scsi: bfa: document overflow of io_profile_start_time 
io_profile_start_time() gets read using do_gettimeofday() and passed
down as a 32-bit value through multiple functions. This will overflow in
y2038 or y2106, depending on whether it gets interpreted as unsigned in
the end.

This changes do_gettimeofday() to ktime_get_real_seconds() and pushes
the point at which it overflows to where we actually assign it to the
bfa_fcpim_del_itn_stats_s structure, with an appropriate comment.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Anil Gurumurthy <Anil.Gurumurthy@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-12-04 20:32:52 -05:00

3912 lines
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/*
* 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.
*
* 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 "bfad_drv.h"
#include "bfa_modules.h"
BFA_TRC_FILE(HAL, FCPIM);
/*
* 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 { \
WARN_ON(!bfa_q_is_on_q(&(__itnim)->fcpim->itnim_q, __itnim)); \
bfa_itnim_update_del_itn_stats(__itnim); \
list_del(&(__itnim)->qe); \
WARN_ON(!list_empty(&(__itnim)->io_q)); \
WARN_ON(!list_empty(&(__itnim)->io_cleanup_q)); \
WARN_ON(!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)
enum bfa_ioim_lm_ua_status {
BFA_IOIM_LM_UA_RESET = 0,
BFA_IOIM_LM_UA_SET = 1,
};
/*
* itnim state machine event
*/
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)
/*
* 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 */
BFA_TSKIM_SM_UTAG = 10, /* TM completion unknown tag */
};
/*
* 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_sgpg_alloc(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,
struct scsi_lun 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);
/*
* 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)
{
bfa_itnim_meminfo(cfg, km_len);
/*
* IO memory
*/
*km_len += cfg->fwcfg.num_ioim_reqs *
(sizeof(struct bfa_ioim_s) + sizeof(struct bfa_ioim_sp_s));
/*
* 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_fcp_mod_s *fcp, void *bfad,
struct bfa_iocfc_cfg_s *cfg, struct bfa_pcidev_s *pcidev)
{
struct bfa_fcpim_s *fcpim = &fcp->fcpim;
struct bfa_s *bfa = fcp->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->fcp = fcp;
fcpim->bfa = bfa;
fcpim->num_itnims = cfg->fwcfg.num_rports;
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);
bfa_tskim_attach(fcpim);
bfa_ioim_attach(fcpim);
}
void
bfa_fcpim_iocdisable(struct bfa_fcp_mod_s *fcp)
{
struct bfa_fcpim_s *fcpim = &fcp->fcpim;
struct bfa_itnim_s *itnim;
struct list_head *qe, *qen;
/* Enqueue unused ioim resources to free_q */
list_splice_tail_init(&fcpim->tskim_unused_q, &fcpim->tskim_free_q);
list_for_each_safe(qe, qen, &fcpim->itnim_q) {
itnim = (struct bfa_itnim_s *) qe;
bfa_itnim_iocdisable(itnim);
}
}
void
bfa_fcpim_path_tov_set(struct bfa_s *bfa, u16 path_tov)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(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_s *fcpim = BFA_FCPIM(bfa);
return fcpim->path_tov / 1000;
}
#define bfa_fcpim_add_iostats(__l, __r, __stats) \
(__l->__stats += __r->__stats)
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);
}
bfa_status_t
bfa_fcpim_port_iostats(struct bfa_s *bfa,
struct bfa_itnim_iostats_s *stats, u8 lp_tag)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(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;
}
void
bfa_ioim_profile_comp(struct bfa_ioim_s *ioim)
{
struct bfa_itnim_latency_s *io_lat =
&(ioim->itnim->ioprofile.io_latency);
u32 val, idx;
val = (u32)(jiffies - ioim->start_time);
idx = bfa_ioim_get_index(scsi_bufflen((struct scsi_cmnd *)ioim->dio));
bfa_itnim_ioprofile_update(ioim->itnim, idx);
io_lat->count[idx]++;
io_lat->min[idx] = (io_lat->min[idx] < val) ? io_lat->min[idx] : val;
io_lat->max[idx] = (io_lat->max[idx] > val) ? io_lat->max[idx] : val;
io_lat->avg[idx] += val;
}
void
bfa_ioim_profile_start(struct bfa_ioim_s *ioim)
{
ioim->start_time = jiffies;
}
bfa_status_t
bfa_fcpim_profile_on(struct bfa_s *bfa, time64_t time)
{
struct bfa_itnim_s *itnim;
struct bfa_fcpim_s *fcpim = BFA_FCPIM(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_s *fcpim = BFA_FCPIM(bfa);
fcpim->io_profile = BFA_FALSE;
fcpim->io_profile_start_time = 0;
fcpim->profile_comp = NULL;
fcpim->profile_start = NULL;
return BFA_STATUS_OK;
}
u16
bfa_fcpim_qdepth_get(struct bfa_s *bfa)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
return fcpim->q_depth;
}
/*
* 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);
}
}
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)
{
/*
* ITN memory
*/
*km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itnim_s);
}
void
bfa_itnim_attach(struct bfa_fcpim_s *fcpim)
{
struct bfa_s *bfa = fcpim->bfa;
struct bfa_fcp_mod_s *fcp = fcpim->fcp;
struct bfa_itnim_s *itnim;
int i, j;
INIT_LIST_HEAD(&fcpim->itnim_q);
itnim = (struct bfa_itnim_s *) bfa_mem_kva_curp(fcp);
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_mem_kva_curp(fcp) = (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_itn_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_ITN, BFI_ITN_H2I_CREATE_REQ,
bfa_fn_lpu(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, m->mh);
return BFA_TRUE;
}
static bfa_boolean_t
bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim)
{
struct bfi_itn_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_ITN, BFI_ITN_H2I_DELETE_REQ,
bfa_fn_lpu(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, m->mh);
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;
WARN_ON(!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_s *fcpim = BFA_FCPIM(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_s *fcpim = BFA_FCPIM(bfa);
union bfi_itn_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_ITN_I2H_CREATE_RSP:
itnim = BFA_ITNIM_FROM_TAG(fcpim,
msg.create_rsp->bfa_handle);
WARN_ON(msg.create_rsp->status != BFA_STATUS_OK);
bfa_stats(itnim, create_comps);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
break;
case BFI_ITN_I2H_DELETE_RSP:
itnim = BFA_ITNIM_FROM_TAG(fcpim,
msg.delete_rsp->bfa_handle);
WARN_ON(msg.delete_rsp->status != BFA_STATUS_OK);
bfa_stats(itnim, delete_comps);
bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
break;
case BFI_ITN_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);
WARN_ON(1);
}
}
/*
* bfa_itnim_api
*/
struct bfa_itnim_s *
bfa_itnim_create(struct bfa_s *bfa, struct bfa_rport_s *rport, void *ditn)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
struct bfa_itnim_s *itnim;
bfa_itn_create(bfa, rport, bfa_itnim_isr);
itnim = BFA_ITNIM_FROM_TAG(fcpim, rport->rport_tag);
WARN_ON(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));
}
#define bfa_io_lat_clock_res_div HZ
#define bfa_io_lat_clock_res_mul 1000
bfa_status_t
bfa_itnim_get_ioprofile(struct bfa_itnim_s *itnim,
struct bfa_itnim_ioprofile_s *ioprofile)
{
struct bfa_fcpim_s *fcpim;
if (!itnim)
return BFA_STATUS_NO_FCPIM_NEXUS;
fcpim = BFA_FCPIM(itnim->bfa);
if (!fcpim->io_profile)
return BFA_STATUS_IOPROFILE_OFF;
itnim->ioprofile.index = BFA_IOBUCKET_MAX;
/* unsigned 32-bit time_t overflow here in y2106 */
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_clear_stats(struct bfa_itnim_s *itnim)
{
int j;
if (!itnim)
return;
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)
{
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_sgpg_alloc(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);
WARN_ON(!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)
{
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_maxretry_reached(ioim)) {
/* max retry reached, 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)
{
switch (event) {
case BFA_IOIM_SM_FREE:
/* abts and rrq done. Now retry the IO with new tag */
bfa_ioim_update_iotag(ioim);
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:
WARN_ON(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:
WARN_ON(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 already 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)
{
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);
}
}
/*
* This is called from bfa_fcpim_start after the bfa_init() with flash read
* is complete by driver. now invalidate the stale content of lun mask
* like unit attention, rp tag and lp tag.
*/
void
bfa_ioim_lm_init(struct bfa_s *bfa)
{
struct bfa_lun_mask_s *lunm_list;
int i;
if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
return;
lunm_list = bfa_get_lun_mask_list(bfa);
for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
lunm_list[i].ua = BFA_IOIM_LM_UA_RESET;
lunm_list[i].lp_tag = BFA_LP_TAG_INVALID;
lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID;
}
}
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 = BFA_SNSINFO_FROM_TAG(ioim->fcpim->fcp,
ioim->iotag);
}
/*
* 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);
}
void
bfa_fcpim_lunmask_rp_update(struct bfa_s *bfa, wwn_t lp_wwn, wwn_t rp_wwn,
u16 rp_tag, u8 lp_tag)
{
struct bfa_lun_mask_s *lun_list;
u8 i;
if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
return;
lun_list = bfa_get_lun_mask_list(bfa);
for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) {
if ((lun_list[i].lp_wwn == lp_wwn) &&
(lun_list[i].rp_wwn == rp_wwn)) {
lun_list[i].rp_tag = rp_tag;
lun_list[i].lp_tag = lp_tag;
}
}
}
}
/*
* set UA for all active luns in LM DB
*/
static void
bfa_ioim_lm_set_ua(struct bfa_s *bfa)
{
struct bfa_lun_mask_s *lunm_list;
int i;
lunm_list = bfa_get_lun_mask_list(bfa);
for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
continue;
lunm_list[i].ua = BFA_IOIM_LM_UA_SET;
}
}
bfa_status_t
bfa_fcpim_lunmask_update(struct bfa_s *bfa, u32 update)
{
struct bfa_lunmask_cfg_s *lun_mask;
bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
return BFA_STATUS_FAILED;
if (bfa_get_lun_mask_status(bfa) == update)
return BFA_STATUS_NO_CHANGE;
lun_mask = bfa_get_lun_mask(bfa);
lun_mask->status = update;
if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED)
bfa_ioim_lm_set_ua(bfa);
return bfa_dconf_update(bfa);
}
bfa_status_t
bfa_fcpim_lunmask_clear(struct bfa_s *bfa)
{
int i;
struct bfa_lun_mask_s *lunm_list;
bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
return BFA_STATUS_FAILED;
lunm_list = bfa_get_lun_mask_list(bfa);
for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
if (lunm_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) {
if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID)
bfa_rport_unset_lunmask(bfa,
BFA_RPORT_FROM_TAG(bfa, lunm_list[i].rp_tag));
}
}
memset(lunm_list, 0, sizeof(struct bfa_lun_mask_s) * MAX_LUN_MASK_CFG);
return bfa_dconf_update(bfa);
}
bfa_status_t
bfa_fcpim_lunmask_query(struct bfa_s *bfa, void *buf)
{
struct bfa_lunmask_cfg_s *lun_mask;
bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
return BFA_STATUS_FAILED;
lun_mask = bfa_get_lun_mask(bfa);
memcpy(buf, lun_mask, sizeof(struct bfa_lunmask_cfg_s));
return BFA_STATUS_OK;
}
bfa_status_t
bfa_fcpim_lunmask_add(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn,
wwn_t rpwwn, struct scsi_lun lun)
{
struct bfa_lun_mask_s *lunm_list;
struct bfa_rport_s *rp = NULL;
int i, free_index = MAX_LUN_MASK_CFG + 1;
struct bfa_fcs_lport_s *port = NULL;
struct bfa_fcs_rport_s *rp_fcs;
bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
return BFA_STATUS_FAILED;
port = bfa_fcs_lookup_port(&((struct bfad_s *)bfa->bfad)->bfa_fcs,
vf_id, *pwwn);
if (port) {
*pwwn = port->port_cfg.pwwn;
rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
if (rp_fcs)
rp = rp_fcs->bfa_rport;
}
lunm_list = bfa_get_lun_mask_list(bfa);
/* if entry exists */
for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
free_index = i;
if ((lunm_list[i].lp_wwn == *pwwn) &&
(lunm_list[i].rp_wwn == rpwwn) &&
(scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) ==
scsilun_to_int((struct scsi_lun *)&lun)))
return BFA_STATUS_ENTRY_EXISTS;
}
if (free_index > MAX_LUN_MASK_CFG)
return BFA_STATUS_MAX_ENTRY_REACHED;
if (rp) {
lunm_list[free_index].lp_tag = bfa_lps_get_tag_from_pid(bfa,
rp->rport_info.local_pid);
lunm_list[free_index].rp_tag = rp->rport_tag;
} else {
lunm_list[free_index].lp_tag = BFA_LP_TAG_INVALID;
lunm_list[free_index].rp_tag = BFA_RPORT_TAG_INVALID;
}
lunm_list[free_index].lp_wwn = *pwwn;
lunm_list[free_index].rp_wwn = rpwwn;
lunm_list[free_index].lun = lun;
lunm_list[free_index].state = BFA_IOIM_LUN_MASK_ACTIVE;
/* set for all luns in this rp */
for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
if ((lunm_list[i].lp_wwn == *pwwn) &&
(lunm_list[i].rp_wwn == rpwwn))
lunm_list[i].ua = BFA_IOIM_LM_UA_SET;
}
return bfa_dconf_update(bfa);
}
bfa_status_t
bfa_fcpim_lunmask_delete(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn,
wwn_t rpwwn, struct scsi_lun lun)
{
struct bfa_lun_mask_s *lunm_list;
struct bfa_rport_s *rp = NULL;
struct bfa_fcs_lport_s *port = NULL;
struct bfa_fcs_rport_s *rp_fcs;
int i;
/* in min cfg lunm_list could be NULL but no commands should run. */
if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
return BFA_STATUS_FAILED;
bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
bfa_trc(bfa, *pwwn);
bfa_trc(bfa, rpwwn);
bfa_trc(bfa, scsilun_to_int((struct scsi_lun *)&lun));
if (*pwwn == 0) {
port = bfa_fcs_lookup_port(
&((struct bfad_s *)bfa->bfad)->bfa_fcs,
vf_id, *pwwn);
if (port) {
*pwwn = port->port_cfg.pwwn;
rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
if (rp_fcs)
rp = rp_fcs->bfa_rport;
}
}
lunm_list = bfa_get_lun_mask_list(bfa);
for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
if ((lunm_list[i].lp_wwn == *pwwn) &&
(lunm_list[i].rp_wwn == rpwwn) &&
(scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) ==
scsilun_to_int((struct scsi_lun *)&lun))) {
lunm_list[i].lp_wwn = 0;
lunm_list[i].rp_wwn = 0;
int_to_scsilun(0, &lunm_list[i].lun);
lunm_list[i].state = BFA_IOIM_LUN_MASK_INACTIVE;
if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID) {
lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID;
lunm_list[i].lp_tag = BFA_LP_TAG_INVALID;
}
return bfa_dconf_update(bfa);
}
}
/* set for all luns in this rp */
for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
if ((lunm_list[i].lp_wwn == *pwwn) &&
(lunm_list[i].rp_wwn == rpwwn))
lunm_list[i].ua = BFA_IOIM_LM_UA_SET;
}
return BFA_STATUS_ENTRY_NOT_EXISTS;
}
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);
ioim->sgpg = bfa_q_first(&ioim->sgpg_q);
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, *sgpge;
u32 pgdlen = 0;
u32 fcp_dl;
u64 addr;
struct scatterlist *sg;
struct bfa_sgpg_s *sgpg;
struct scsi_cmnd *cmnd = (struct scsi_cmnd *) ioim->dio;
u32 i, sge_id, pgcumsz;
enum dma_data_direction dmadir;
/*
* 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 = 0;
sge = &m->sges[0];
sgpg = ioim->sgpg;
sge_id = 0;
sgpge = NULL;
pgcumsz = 0;
scsi_for_each_sg(cmnd, sg, ioim->nsges, i) {
if (i == 0) {
/* build inline IO SG element */
addr = bfa_sgaddr_le(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++;
} else {
if (sge_id == 0)
sgpge = sgpg->sgpg->sges;
addr = bfa_sgaddr_le(sg_dma_address(sg));
sgpge->sga = *(union bfi_addr_u *) &addr;
sgpge->sg_len = sg_dma_len(sg);
pgcumsz += sgpge->sg_len;
/* set flags */
if (i < (ioim->nsges - 1) &&
sge_id < (BFI_SGPG_DATA_SGES - 1))
sgpge->flags = BFI_SGE_DATA;
else if (i < (ioim->nsges - 1))
sgpge->flags = BFI_SGE_DATA_CPL;
else
sgpge->flags = BFI_SGE_DATA_LAST;
bfa_sge_to_le(sgpge);
sgpge++;
if (i == (ioim->nsges - 1)) {
sgpge->flags = BFI_SGE_PGDLEN;
sgpge->sga.a32.addr_lo = 0;
sgpge->sga.a32.addr_hi = 0;
sgpge->sg_len = pgcumsz;
bfa_sge_to_le(sgpge);
} else if (++sge_id == BFI_SGPG_DATA_SGES) {
sgpg = (struct bfa_sgpg_s *) bfa_q_next(sgpg);
sgpge->flags = BFI_SGE_LINK;
sgpge->sga = sgpg->sgpg_pa;
sgpge->sg_len = pgcumsz;
bfa_sge_to_le(sgpge);
sge_id = 0;
pgcumsz = 0;
}
}
}
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;
int_to_scsilun(cmnd->device->lun, &m->cmnd.lun);
dmadir = cmnd->sc_data_direction;
if (dmadir == DMA_TO_DEVICE)
m->cmnd.iodir = FCP_IODIR_WRITE;
else if (dmadir == DMA_FROM_DEVICE)
m->cmnd.iodir = FCP_IODIR_READ;
else
m->cmnd.iodir = FCP_IODIR_NONE;
m->cmnd.cdb = *(struct scsi_cdb_s *) cmnd->cmnd;
fcp_dl = scsi_bufflen(cmnd);
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_fn_lpu(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_fn_lpu(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_fn_lpu(ioim->bfa));
}
if (itnim->seq_rec ||
(scsi_bufflen(cmnd) & (sizeof(u32) - 1)))
bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa));
/*
* queue I/O message to firmware
*/
bfa_reqq_produce(ioim->bfa, ioim->reqq, m->mh);
return BFA_TRUE;
}
/*
* Setup any additional SG pages needed.Inline SG element is setup
* at queuing time.
*/
static bfa_boolean_t
bfa_ioim_sgpg_alloc(struct bfa_ioim_s *ioim)
{
u16 nsgpgs;
WARN_ON(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;
ioim->sgpg = bfa_q_first(&ioim->sgpg_q);
return BFA_TRUE;
}
/*
* 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_fn_lpu(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, m->mh);
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_wc_down(&ioim->iosp->tskim->wc);
}
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;
}
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);
}
/*
* Memory allocation and initialization.
*/
void
bfa_ioim_attach(struct bfa_fcpim_s *fcpim)
{
struct bfa_ioim_s *ioim;
struct bfa_fcp_mod_s *fcp = fcpim->fcp;
struct bfa_ioim_sp_s *iosp;
u16 i;
/*
* claim memory first
*/
ioim = (struct bfa_ioim_s *) bfa_mem_kva_curp(fcp);
fcpim->ioim_arr = ioim;
bfa_mem_kva_curp(fcp) = (u8 *) (ioim + fcpim->fcp->num_ioim_reqs);
iosp = (struct bfa_ioim_sp_s *) bfa_mem_kva_curp(fcp);
fcpim->ioim_sp_arr = iosp;
bfa_mem_kva_curp(fcp) = (u8 *) (iosp + fcpim->fcp->num_ioim_reqs);
/*
* Initialize ioim free queues
*/
INIT_LIST_HEAD(&fcpim->ioim_resfree_q);
INIT_LIST_HEAD(&fcpim->ioim_comp_q);
for (i = 0; i < fcpim->fcp->num_ioim_reqs;
i++, ioim++, iosp++) {
/*
* initialize IOIM
*/
memset(ioim, 0, sizeof(struct bfa_ioim_s));
ioim->iotag = i;
ioim->bfa = fcpim->bfa;
ioim->fcpim = fcpim;
ioim->iosp = iosp;
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);
}
}
void
bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(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);
WARN_ON(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);
WARN_ON(!rsp->reuse_io_tag);
evt = BFA_IOIM_SM_COMP;
break;
case BFI_IOIM_STS_SQER_NEEDED:
bfa_stats(ioim->itnim, iocom_sqer_needed);
WARN_ON(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:
WARN_ON(1);
}
bfa_sm_send_event(ioim, evt);
}
void
bfa_ioim_good_comp_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(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);
WARN_ON(ioim->iotag != iotag);
bfa_ioim_cb_profile_comp(fcpim, ioim);
bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
}
/*
* 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);
}
/*
* 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_s *fcpim = BFA_FCPIM(bfa);
struct bfa_ioim_s *ioim;
struct bfa_iotag_s *iotag = NULL;
/*
* alocate IOIM resource
*/
bfa_q_deq(&fcpim->fcp->iotag_ioim_free_q, &iotag);
if (!iotag) {
bfa_stats(itnim, no_iotags);
return NULL;
}
ioim = BFA_IOIM_FROM_TAG(fcpim, iotag->tag);
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);
return ioim;
}
void
bfa_ioim_free(struct bfa_ioim_s *ioim)
{
struct bfa_fcpim_s *fcpim = ioim->fcpim;
struct bfa_iotag_s *iotag;
if (ioim->nsgpgs > 0)
bfa_sgpg_mfree(ioim->bfa, &ioim->sgpg_q, ioim->nsgpgs);
bfa_stats(ioim->itnim, io_comps);
fcpim->ios_active--;
ioim->iotag &= BFA_IOIM_IOTAG_MASK;
WARN_ON(!(ioim->iotag <
(fcpim->fcp->num_ioim_reqs + fcpim->fcp->num_fwtio_reqs)));
iotag = BFA_IOTAG_FROM_TAG(fcpim->fcp, ioim->iotag);
if (ioim->iotag < fcpim->fcp->num_ioim_reqs)
list_add_tail(&iotag->qe, &fcpim->fcp->iotag_ioim_free_q);
else
list_add_tail(&iotag->qe, &fcpim->fcp->iotag_tio_free_q);
list_del(&ioim->qe);
}
void
bfa_ioim_start(struct bfa_ioim_s *ioim)
{
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_FALSE : 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, tskim->tsk_tag << 16 | 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);
}
}
/*
* 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, tskim->tsk_tag << 16 | 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, tskim->tsk_tag << 16 | event);
switch (event) {
case BFA_TSKIM_SM_DONE:
/*
* Ignore and wait for ABORT completion from firmware.
*/
break;
case BFA_TSKIM_SM_UTAG:
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, tskim->tsk_tag << 16 | 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, tskim->tsk_tag << 16 | 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, tskim->tsk_tag << 16 | 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, tskim->tsk_tag << 16 | 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);
}
}
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, struct scsi_lun 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 !memcmp(&tskim->lun, &lun, sizeof(lun));
default:
WARN_ON(1);
}
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;
struct scsi_cmnd *cmnd;
struct scsi_lun scsilun;
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;
cmnd = (struct scsi_cmnd *) ioim->dio;
int_to_scsilun(cmnd->device->lun, &scsilun);
if (bfa_tskim_match_scope(tskim, scsilun)) {
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;
cmnd = (struct scsi_cmnd *) ioim->dio;
int_to_scsilun(cmnd->device->lun, &scsilun);
if (bfa_tskim_match_scope(tskim, scsilun)) {
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_fn_lpu(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, m->mh);
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_fn_lpu(tskim->bfa));
m->tsk_tag = cpu_to_be16(tskim->tsk_tag);
/*
* queue I/O message to firmware
*/
bfa_reqq_produce(tskim->bfa, itnim->reqq, m->mh);
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);
}
}
/*
* 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_s *fcpim)
{
struct bfa_tskim_s *tskim;
struct bfa_fcp_mod_s *fcp = fcpim->fcp;
u16 i;
INIT_LIST_HEAD(&fcpim->tskim_free_q);
INIT_LIST_HEAD(&fcpim->tskim_unused_q);
tskim = (struct bfa_tskim_s *) bfa_mem_kva_curp(fcp);
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_mem_kva_curp(fcp) = (u8 *) tskim;
}
void
bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(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);
WARN_ON(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 if (rsp->tsk_status == BFI_TSKIM_STS_UTAG) {
bfa_sm_send_event(tskim, BFA_TSKIM_SM_UTAG);
} else {
bfa_stats(tskim->itnim, tm_fw_rsps);
bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE);
}
}
struct bfa_tskim_s *
bfa_tskim_alloc(struct bfa_s *bfa, struct bfad_tskim_s *dtsk)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(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)
{
WARN_ON(!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,
struct scsi_lun 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);
}
void
bfa_tskim_res_recfg(struct bfa_s *bfa, u16 num_tskim_fw)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
struct list_head *qe;
int i;
for (i = 0; i < (fcpim->num_tskim_reqs - num_tskim_fw); i++) {
bfa_q_deq_tail(&fcpim->tskim_free_q, &qe);
list_add_tail(qe, &fcpim->tskim_unused_q);
}
}
void
bfa_fcp_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
struct bfa_s *bfa)
{
struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
struct bfa_mem_kva_s *fcp_kva = BFA_MEM_FCP_KVA(bfa);
struct bfa_mem_dma_s *seg_ptr;
u16 nsegs, idx, per_seg_ios, num_io_req;
u32 km_len = 0;
/*
* ZERO for num_ioim_reqs and num_fwtio_reqs is allowed config value.
* So if the values are non zero, adjust them appropriately.
*/
if (cfg->fwcfg.num_ioim_reqs &&
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;
if (cfg->fwcfg.num_fwtio_reqs > BFA_FWTIO_MAX)
cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX;
num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
if (num_io_req > BFA_IO_MAX) {
if (cfg->fwcfg.num_ioim_reqs && cfg->fwcfg.num_fwtio_reqs) {
cfg->fwcfg.num_ioim_reqs = BFA_IO_MAX/2;
cfg->fwcfg.num_fwtio_reqs = BFA_IO_MAX/2;
} else if (cfg->fwcfg.num_fwtio_reqs)
cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX;
else
cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX;
}
bfa_fcpim_meminfo(cfg, &km_len);
num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
km_len += num_io_req * sizeof(struct bfa_iotag_s);
km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itn_s);
/* dma memory */
nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN);
per_seg_ios = BFI_MEM_NREQS_SEG(BFI_IOIM_SNSLEN);
bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) {
if (num_io_req >= per_seg_ios) {
num_io_req -= per_seg_ios;
bfa_mem_dma_setup(minfo, seg_ptr,
per_seg_ios * BFI_IOIM_SNSLEN);
} else
bfa_mem_dma_setup(minfo, seg_ptr,
num_io_req * BFI_IOIM_SNSLEN);
}
/* kva memory */
bfa_mem_kva_setup(minfo, fcp_kva, km_len);
}
void
bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
struct bfa_pcidev_s *pcidev)
{
struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
struct bfa_mem_dma_s *seg_ptr;
u16 idx, nsegs, num_io_req;
fcp->max_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
fcp->num_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
fcp->num_fwtio_reqs = cfg->fwcfg.num_fwtio_reqs;
fcp->num_itns = cfg->fwcfg.num_rports;
fcp->bfa = bfa;
/*
* Setup the pool of snsbase addr's, that is passed to fw as
* part of bfi_iocfc_cfg_s.
*/
num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN);
bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) {
if (!bfa_mem_dma_virt(seg_ptr))
break;
fcp->snsbase[idx].pa = bfa_mem_dma_phys(seg_ptr);
fcp->snsbase[idx].kva = bfa_mem_dma_virt(seg_ptr);
bfa_iocfc_set_snsbase(bfa, idx, fcp->snsbase[idx].pa);
}
fcp->throttle_update_required = 1;
bfa_fcpim_attach(fcp, bfad, cfg, pcidev);
bfa_iotag_attach(fcp);
fcp->itn_arr = (struct bfa_itn_s *) bfa_mem_kva_curp(fcp);
bfa_mem_kva_curp(fcp) = (u8 *)fcp->itn_arr +
(fcp->num_itns * sizeof(struct bfa_itn_s));
memset(fcp->itn_arr, 0,
(fcp->num_itns * sizeof(struct bfa_itn_s)));
}
void
bfa_fcp_iocdisable(struct bfa_s *bfa)
{
struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
bfa_fcpim_iocdisable(fcp);
}
void
bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw, u16 max_ioim_fw)
{
struct bfa_fcp_mod_s *mod = BFA_FCP_MOD(bfa);
struct list_head *qe;
int i;
/* Update io throttle value only once during driver load time */
if (!mod->throttle_update_required)
return;
for (i = 0; i < (mod->num_ioim_reqs - num_ioim_fw); i++) {
bfa_q_deq_tail(&mod->iotag_ioim_free_q, &qe);
list_add_tail(qe, &mod->iotag_unused_q);
}
if (mod->num_ioim_reqs != num_ioim_fw) {
bfa_trc(bfa, mod->num_ioim_reqs);
bfa_trc(bfa, num_ioim_fw);
}
mod->max_ioim_reqs = max_ioim_fw;
mod->num_ioim_reqs = num_ioim_fw;
mod->throttle_update_required = 0;
}
void
bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport,
void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m))
{
struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
struct bfa_itn_s *itn;
itn = BFA_ITN_FROM_TAG(fcp, rport->rport_tag);
itn->isr = isr;
}
/*
* Itn interrupt processing.
*/
void
bfa_itn_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
union bfi_itn_i2h_msg_u msg;
struct bfa_itn_s *itn;
msg.msg = m;
itn = BFA_ITN_FROM_TAG(fcp, msg.create_rsp->bfa_handle);
if (itn->isr)
itn->isr(bfa, m);
else
WARN_ON(1);
}
void
bfa_iotag_attach(struct bfa_fcp_mod_s *fcp)
{
struct bfa_iotag_s *iotag;
u16 num_io_req, i;
iotag = (struct bfa_iotag_s *) bfa_mem_kva_curp(fcp);
fcp->iotag_arr = iotag;
INIT_LIST_HEAD(&fcp->iotag_ioim_free_q);
INIT_LIST_HEAD(&fcp->iotag_tio_free_q);
INIT_LIST_HEAD(&fcp->iotag_unused_q);
num_io_req = fcp->num_ioim_reqs + fcp->num_fwtio_reqs;
for (i = 0; i < num_io_req; i++, iotag++) {
memset(iotag, 0, sizeof(struct bfa_iotag_s));
iotag->tag = i;
if (i < fcp->num_ioim_reqs)
list_add_tail(&iotag->qe, &fcp->iotag_ioim_free_q);
else
list_add_tail(&iotag->qe, &fcp->iotag_tio_free_q);
}
bfa_mem_kva_curp(fcp) = (u8 *) iotag;
}
/**
* To send config req, first try to use throttle value from flash
* If 0, then use driver parameter
* We need to use min(flash_val, drv_val) because
* memory allocation was done based on this cfg'd value
*/
u16
bfa_fcpim_get_throttle_cfg(struct bfa_s *bfa, u16 drv_cfg_param)
{
u16 tmp;
struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
/*
* If throttle value from flash is already in effect after driver is
* loaded then until next load, always return current value instead
* of actual flash value
*/
if (!fcp->throttle_update_required)
return (u16)fcp->num_ioim_reqs;
tmp = bfa_dconf_read_data_valid(bfa) ? bfa_fcpim_read_throttle(bfa) : 0;
if (!tmp || (tmp > drv_cfg_param))
tmp = drv_cfg_param;
return tmp;
}
bfa_status_t
bfa_fcpim_write_throttle(struct bfa_s *bfa, u16 value)
{
if (!bfa_dconf_get_min_cfg(bfa)) {
BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.value = value;
BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.is_valid = 1;
return BFA_STATUS_OK;
}
return BFA_STATUS_FAILED;
}
u16
bfa_fcpim_read_throttle(struct bfa_s *bfa)
{
struct bfa_throttle_cfg_s *throttle_cfg =
&(BFA_DCONF_MOD(bfa)->dconf->throttle_cfg);
return ((!bfa_dconf_get_min_cfg(bfa)) ?
((throttle_cfg->is_valid == 1) ? (throttle_cfg->value) : 0) : 0);
}
bfa_status_t
bfa_fcpim_throttle_set(struct bfa_s *bfa, u16 value)
{
/* in min cfg no commands should run. */
if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) ||
(!bfa_dconf_read_data_valid(bfa)))
return BFA_STATUS_FAILED;
bfa_fcpim_write_throttle(bfa, value);
return bfa_dconf_update(bfa);
}
bfa_status_t
bfa_fcpim_throttle_get(struct bfa_s *bfa, void *buf)
{
struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
struct bfa_defs_fcpim_throttle_s throttle;
if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) ||
(!bfa_dconf_read_data_valid(bfa)))
return BFA_STATUS_FAILED;
memset(&throttle, 0, sizeof(struct bfa_defs_fcpim_throttle_s));
throttle.cur_value = (u16)(fcpim->fcp->num_ioim_reqs);
throttle.cfg_value = bfa_fcpim_read_throttle(bfa);
if (!throttle.cfg_value)
throttle.cfg_value = throttle.cur_value;
throttle.max_value = (u16)(fcpim->fcp->max_ioim_reqs);
memcpy(buf, &throttle, sizeof(struct bfa_defs_fcpim_throttle_s));
return BFA_STATUS_OK;
}
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