![Jing Huang](/assets/img/avatar_default.png)
Add new bfa functionality to support dynamic queue selection (IO redirection). IO redirection can only be enabled when QoS is disabled. Signed-off-by: Jing Huang <huangj@brocade.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
195 lines
4.5 KiB
C
195 lines
4.5 KiB
C
/*
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* Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
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* All rights reserved
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* www.brocade.com
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*
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* Linux driver for Brocade Fibre Channel Host Bus Adapter.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (GPL) Version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#include <bfa.h>
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#include <log/bfa_log_hal.h>
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BFA_TRC_FILE(HAL, FCPIM);
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BFA_MODULE(fcpim);
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/**
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* hal_fcpim_mod BFA FCP Initiator Mode module
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*/
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/**
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* Compute and return memory needed by FCP(im) module.
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*/
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static void
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bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
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u32 *dm_len)
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{
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bfa_itnim_meminfo(cfg, km_len, dm_len);
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/**
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* IO memory
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*/
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if (cfg->fwcfg.num_ioim_reqs < BFA_IOIM_MIN)
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cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MIN;
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else if (cfg->fwcfg.num_ioim_reqs > BFA_IOIM_MAX)
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cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX;
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*km_len += cfg->fwcfg.num_ioim_reqs *
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(sizeof(struct bfa_ioim_s) + sizeof(struct bfa_ioim_sp_s));
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*dm_len += cfg->fwcfg.num_ioim_reqs * BFI_IOIM_SNSLEN;
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/**
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* task management command memory
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*/
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if (cfg->fwcfg.num_tskim_reqs < BFA_TSKIM_MIN)
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cfg->fwcfg.num_tskim_reqs = BFA_TSKIM_MIN;
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*km_len += cfg->fwcfg.num_tskim_reqs * sizeof(struct bfa_tskim_s);
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}
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static void
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bfa_fcpim_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
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struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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bfa_trc(bfa, cfg->drvcfg.path_tov);
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bfa_trc(bfa, cfg->fwcfg.num_rports);
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bfa_trc(bfa, cfg->fwcfg.num_ioim_reqs);
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bfa_trc(bfa, cfg->fwcfg.num_tskim_reqs);
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fcpim->bfa = bfa;
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fcpim->num_itnims = cfg->fwcfg.num_rports;
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fcpim->num_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
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fcpim->num_tskim_reqs = cfg->fwcfg.num_tskim_reqs;
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fcpim->path_tov = cfg->drvcfg.path_tov;
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fcpim->delay_comp = cfg->drvcfg.delay_comp;
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bfa_itnim_attach(fcpim, meminfo);
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bfa_tskim_attach(fcpim, meminfo);
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bfa_ioim_attach(fcpim, meminfo);
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}
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static void
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bfa_fcpim_detach(struct bfa_s *bfa)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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bfa_ioim_detach(fcpim);
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bfa_tskim_detach(fcpim);
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}
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static void
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bfa_fcpim_start(struct bfa_s *bfa)
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{
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}
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static void
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bfa_fcpim_stop(struct bfa_s *bfa)
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{
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}
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static void
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bfa_fcpim_iocdisable(struct bfa_s *bfa)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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struct bfa_itnim_s *itnim;
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struct list_head *qe, *qen;
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list_for_each_safe(qe, qen, &fcpim->itnim_q) {
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itnim = (struct bfa_itnim_s *) qe;
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bfa_itnim_iocdisable(itnim);
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}
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}
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void
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bfa_fcpim_path_tov_set(struct bfa_s *bfa, u16 path_tov)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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fcpim->path_tov = path_tov * 1000;
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if (fcpim->path_tov > BFA_FCPIM_PATHTOV_MAX)
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fcpim->path_tov = BFA_FCPIM_PATHTOV_MAX;
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}
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u16
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bfa_fcpim_path_tov_get(struct bfa_s *bfa)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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return fcpim->path_tov / 1000;
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}
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bfa_status_t
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bfa_fcpim_get_modstats(struct bfa_s *bfa, struct bfa_fcpim_stats_s *modstats)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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*modstats = fcpim->stats;
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return BFA_STATUS_OK;
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}
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bfa_status_t
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bfa_fcpim_clr_modstats(struct bfa_s *bfa)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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memset(&fcpim->stats, 0, sizeof(struct bfa_fcpim_stats_s));
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return BFA_STATUS_OK;
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}
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void
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bfa_fcpim_qdepth_set(struct bfa_s *bfa, u16 q_depth)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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bfa_assert(q_depth <= BFA_IOCFC_QDEPTH_MAX);
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fcpim->q_depth = q_depth;
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}
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u16
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bfa_fcpim_qdepth_get(struct bfa_s *bfa)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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return fcpim->q_depth;
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}
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void
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bfa_fcpim_update_ioredirect(struct bfa_s *bfa)
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{
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bfa_boolean_t ioredirect;
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/*
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* IO redirection is turned off when QoS is enabled and vice versa
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*/
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ioredirect = bfa_fcport_is_qos_enabled(bfa) ? BFA_FALSE : BFA_TRUE;
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/*
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* Notify the bfad module of a possible state change in
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* IO redirection capability, due to a QoS state change. bfad will
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* check on the support for io redirection and update the
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* fcpim's ioredirect state accordingly.
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*/
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bfa_cb_ioredirect_state_change((void *)(bfa->bfad), ioredirect);
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}
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void
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bfa_fcpim_set_ioredirect(struct bfa_s *bfa, bfa_boolean_t state)
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{
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struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
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fcpim->ioredirect = state;
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}
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