+++ /dev/null
-/*
- * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
- * All rights reserved
- * www.brocade.com
- *
- * Linux driver for Brocade Fibre Channel Host Bus Adapter.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License (GPL) Version 2 as
- * published by the Free Software Foundation
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-
-#include <bfa.h>
-#include <cs/bfa_debug.h>
-#include <bfa_cb_ioim_macros.h>
-
-BFA_TRC_FILE(HAL, IOIM);
-
-/*
- * forward declarations.
- */
-static bfa_boolean_t bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim);
-static bfa_boolean_t bfa_ioim_sge_setup(struct bfa_ioim_s *ioim);
-static void bfa_ioim_sgpg_setup(struct bfa_ioim_s *ioim);
-static bfa_boolean_t bfa_ioim_send_abort(struct bfa_ioim_s *ioim);
-static void bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim);
-static void __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete);
-static void __bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete);
-static void __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete);
-static void __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete);
-static void __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete);
-
-/**
- * bfa_ioim_sm
- */
-
-/**
- * IO state machine events
- */
-enum bfa_ioim_event {
- BFA_IOIM_SM_START = 1, /* io start request from host */
- BFA_IOIM_SM_COMP_GOOD = 2, /* io good comp, resource free */
- BFA_IOIM_SM_COMP = 3, /* io comp, resource is free */
- BFA_IOIM_SM_COMP_UTAG = 4, /* io comp, resource is free */
- BFA_IOIM_SM_DONE = 5, /* io comp, resource not free */
- BFA_IOIM_SM_FREE = 6, /* io resource is freed */
- BFA_IOIM_SM_ABORT = 7, /* abort request from scsi stack */
- BFA_IOIM_SM_ABORT_COMP = 8, /* abort from f/w */
- BFA_IOIM_SM_ABORT_DONE = 9, /* abort completion from f/w */
- BFA_IOIM_SM_QRESUME = 10, /* CQ space available to queue IO */
- BFA_IOIM_SM_SGALLOCED = 11, /* SG page allocation successful */
- BFA_IOIM_SM_SQRETRY = 12, /* sequence recovery retry */
- BFA_IOIM_SM_HCB = 13, /* bfa callback complete */
- BFA_IOIM_SM_CLEANUP = 14, /* IO cleanup from itnim */
- BFA_IOIM_SM_TMSTART = 15, /* IO cleanup from tskim */
- BFA_IOIM_SM_TMDONE = 16, /* IO cleanup from tskim */
- BFA_IOIM_SM_HWFAIL = 17, /* IOC h/w failure event */
- BFA_IOIM_SM_IOTOV = 18, /* ITN offline TOV */
-};
-
-/*
- * forward declaration of 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);
-
-/**
- * IO is not started (unallocated).
- */
-static void
-bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
-{
- bfa_trc_fp(ioim->bfa, ioim->iotag);
- bfa_trc_fp(ioim->bfa, event);
-
- switch (event) {
- case BFA_IOIM_SM_START:
- if (!bfa_itnim_is_online(ioim->itnim)) {
- if (!bfa_itnim_hold_io(ioim->itnim)) {
- bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
- list_del(&ioim->qe);
- list_add_tail(&ioim->qe,
- &ioim->fcpim->ioim_comp_q);
- bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
- __bfa_cb_ioim_pathtov, ioim);
- } else {
- list_del(&ioim->qe);
- list_add_tail(&ioim->qe,
- &ioim->itnim->pending_q);
- }
- break;
- }
-
- if (ioim->nsges > BFI_SGE_INLINE) {
- if (!bfa_ioim_sge_setup(ioim)) {
- bfa_sm_set_state(ioim, bfa_ioim_sm_sgalloc);
- return;
- }
- }
-
- if (!bfa_ioim_send_ioreq(ioim)) {
- bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
- break;
- }
-
- bfa_sm_set_state(ioim, bfa_ioim_sm_active);
- break;
-
- case BFA_IOIM_SM_IOTOV:
- bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
- 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);
- break;
-
- case BFA_IOIM_SM_ABORT:
- /**
- * IO in pending queue can get abort requests. Complete abort
- * requests immediately.
- */
- bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
- bfa_assert(bfa_q_is_on_q(&ioim->itnim->pending_q, ioim));
- bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
- ioim);
- break;
-
- default:
- bfa_sm_fault(ioim->bfa, event);
- }
-}
-
-/**
- * IO is waiting for SG pages.
- */
-static void
-bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
-{
- bfa_trc(ioim->bfa, ioim->iotag);
- bfa_trc(ioim->bfa, event);
-
- switch (event) {
- case BFA_IOIM_SM_SGALLOCED:
- if (!bfa_ioim_send_ioreq(ioim)) {
- bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
- break;
- }
- bfa_sm_set_state(ioim, bfa_ioim_sm_active);
- break;
-
- case BFA_IOIM_SM_CLEANUP:
- bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
- bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
- bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
- ioim);
- bfa_ioim_notify_cleanup(ioim);
- break;
-
- case BFA_IOIM_SM_ABORT:
- bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
- bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
- 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_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);
- 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_failed,
- ioim);
- break;
-
- default:
- bfa_sm_fault(ioim->bfa, event);
- }
-}
-
-/**
- * IO is active.
- */
-static void
-bfa_ioim_sm_active(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
-{
- bfa_trc_fp(ioim->bfa, ioim->iotag);
- bfa_trc_fp(ioim->bfa, event);
-
- switch (event) {
- case BFA_IOIM_SM_COMP_GOOD:
- bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
- 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_good_comp, ioim);
- break;
-
- case BFA_IOIM_SM_COMP:
- 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_comp,
- ioim);
- break;
-
- case BFA_IOIM_SM_DONE:
- bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
- 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_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_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_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);
- 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_failed,
- 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);
- 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_abort,
- ioim);
- break;
-
- case BFA_IOIM_SM_COMP_UTAG:
- 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_abort,
- ioim);
- break;
-
- case BFA_IOIM_SM_CLEANUP:
- bfa_assert(ioim->iosp->abort_explicit == BFA_TRUE);
- ioim->iosp->abort_explicit = BFA_FALSE;
-
- if (bfa_ioim_send_abort(ioim))
- bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
- else {
- bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
- bfa_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);
- 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_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);
- 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_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);
- 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_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);
- 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_failed,
- ioim);
- break;
-
- default:
- bfa_sm_fault(ioim->bfa, event);
- }
-}
-
-/**
- * Active IO is being aborted, waiting for room in request CQ.
- */
-static void
-bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
-{
- bfa_trc(ioim->bfa, ioim->iotag);
- bfa_trc(ioim->bfa, event);
-
- switch (event) {
- case BFA_IOIM_SM_QRESUME:
- bfa_sm_set_state(ioim, bfa_ioim_sm_abort);
- bfa_ioim_send_abort(ioim);
- break;
-
- case BFA_IOIM_SM_CLEANUP:
- bfa_assert(ioim->iosp->abort_explicit == BFA_TRUE);
- ioim->iosp->abort_explicit = BFA_FALSE;
- bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
- break;
-
- case BFA_IOIM_SM_COMP_GOOD:
- case BFA_IOIM_SM_COMP:
- bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
- bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
- 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_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);
- 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_abort,
- ioim);
- break;
-
- case BFA_IOIM_SM_HWFAIL:
- bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
- bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
- 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_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);
- 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_failed,
- ioim);
- break;
-
- default:
- bfa_sm_fault(ioim->bfa, event);
- }
-}
-
-/**
- * IO bfa callback is pending.
- */
-static void
-bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
-{
- bfa_trc_fp(ioim->bfa, ioim->iotag);
- bfa_trc_fp(ioim->bfa, event);
-
- switch (event) {
- case BFA_IOIM_SM_HCB:
- bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
- bfa_ioim_free(ioim);
- bfa_cb_ioim_resfree(ioim->bfa->bfad);
- 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);
- bfa_cb_ioim_resfree(ioim->bfa->bfad);
- 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);
- }
-}
-
-
-
-/**
- * bfa_ioim_private
- */
-
-static void
-__bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete)
-{
- struct bfa_ioim_s *ioim = cbarg;
-
- if (!complete) {
- bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
- return;
- }
-
- bfa_cb_ioim_good_comp(ioim->bfa->bfad, ioim->dio);
-}
-
-static void
-__bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete)
-{
- struct bfa_ioim_s *ioim = cbarg;
- struct bfi_ioim_rsp_s *m;
- u8 *snsinfo = NULL;
- u8 sns_len = 0;
- s32 residue = 0;
-
- if (!complete) {
- bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
- return;
- }
-
- m = (struct bfi_ioim_rsp_s *) &ioim->iosp->comp_rspmsg;
- if (m->io_status == BFI_IOIM_STS_OK) {
- /**
- * setup sense information, if present
- */
- if (m->scsi_status == SCSI_STATUS_CHECK_CONDITION
- && m->sns_len) {
- sns_len = m->sns_len;
- snsinfo = ioim->iosp->snsinfo;
- }
-
- /**
- * setup residue value correctly for normal completions
- */
- if (m->resid_flags == FCP_RESID_UNDER)
- residue = bfa_os_ntohl(m->residue);
- if (m->resid_flags == FCP_RESID_OVER) {
- residue = bfa_os_ntohl(m->residue);
- residue = -residue;
- }
- }
-
- bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, m->io_status,
- m->scsi_status, sns_len, snsinfo, residue);
-}
-
-static void
-__bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete)
-{
- struct bfa_ioim_s *ioim = cbarg;
-
- if (!complete) {
- bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
- return;
- }
-
- bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_ABORTED,
- 0, 0, NULL, 0);
-}
-
-static void
-__bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete)
-{
- struct bfa_ioim_s *ioim = cbarg;
-
- if (!complete) {
- bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
- return;
- }
-
- bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_PATHTOV,
- 0, 0, NULL, 0);
-}
-
-static void
-__bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete)
-{
- struct bfa_ioim_s *ioim = cbarg;
-
- if (!complete) {
- bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
- return;
- }
-
- bfa_cb_ioim_abort(ioim->bfa->bfad, ioim->dio);
-}
-
-static void
-bfa_ioim_sgpg_alloced(void *cbarg)
-{
- struct bfa_ioim_s *ioim = cbarg;
-
- ioim->nsgpgs = BFA_SGPG_NPAGE(ioim->nsges);
- list_splice_tail_init(&ioim->iosp->sgpg_wqe.sgpg_q, &ioim->sgpg_q);
- bfa_ioim_sgpg_setup(ioim);
- bfa_sm_send_event(ioim, BFA_IOIM_SM_SGALLOCED);
-}
-
-/**
- * Send I/O request to firmware.
- */
-static bfa_boolean_t
-bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim)
-{
- struct bfa_itnim_s *itnim = ioim->itnim;
- struct bfi_ioim_req_s *m;
- static struct fcp_cmnd_s cmnd_z0 = { 0 };
- struct bfi_sge_s *sge;
- u32 pgdlen = 0;
- u64 addr;
- struct scatterlist *sg;
- struct scsi_cmnd *cmnd = (struct scsi_cmnd *) ioim->dio;
-
- /**
- * check for room in queue to send request now
- */
- m = bfa_reqq_next(ioim->bfa, ioim->reqq);
- if (!m) {
- bfa_reqq_wait(ioim->bfa, ioim->reqq,
- &ioim->iosp->reqq_wait);
- return BFA_FALSE;
- }
-
- /**
- * build i/o request message next
- */
- m->io_tag = bfa_os_htons(ioim->iotag);
- m->rport_hdl = ioim->itnim->rport->fw_handle;
- m->io_timeout = bfa_cb_ioim_get_timeout(ioim->dio);
-
- /**
- * build inline IO SG element here
- */
- sge = &m->sges[0];
- if (ioim->nsges) {
- sg = (struct scatterlist *)scsi_sglist(cmnd);
- addr = bfa_os_sgaddr(sg_dma_address(sg));
- sge->sga = *(union bfi_addr_u *) &addr;
- pgdlen = sg_dma_len(sg);
- sge->sg_len = pgdlen;
- sge->flags = (ioim->nsges > BFI_SGE_INLINE) ?
- BFI_SGE_DATA_CPL : BFI_SGE_DATA_LAST;
- bfa_sge_to_be(sge);
- sge++;
- }
-
- if (ioim->nsges > BFI_SGE_INLINE) {
- sge->sga = ioim->sgpg->sgpg_pa;
- } else {
- sge->sga.a32.addr_lo = 0;
- sge->sga.a32.addr_hi = 0;
- }
- sge->sg_len = pgdlen;
- sge->flags = BFI_SGE_PGDLEN;
- bfa_sge_to_be(sge);
-
- /**
- * set up I/O command parameters
- */
- bfa_os_assign(m->cmnd, cmnd_z0);
- m->cmnd.lun = bfa_cb_ioim_get_lun(ioim->dio);
- m->cmnd.iodir = bfa_cb_ioim_get_iodir(ioim->dio);
- bfa_os_assign(m->cmnd.cdb,
- *(struct scsi_cdb_s *)bfa_cb_ioim_get_cdb(ioim->dio));
- m->cmnd.fcp_dl = bfa_os_htonl(bfa_cb_ioim_get_size(ioim->dio));
-
- /**
- * set up I/O message header
- */
- switch (m->cmnd.iodir) {
- case FCP_IODIR_READ:
- bfi_h2i_set(m->mh, BFI_MC_IOIM_READ, 0, bfa_lpuid(ioim->bfa));
- bfa_stats(itnim, input_reqs);
- break;
- case FCP_IODIR_WRITE:
- bfi_h2i_set(m->mh, BFI_MC_IOIM_WRITE, 0, bfa_lpuid(ioim->bfa));
- bfa_stats(itnim, output_reqs);
- break;
- case FCP_IODIR_RW:
- bfa_stats(itnim, input_reqs);
- bfa_stats(itnim, output_reqs);
- default:
- bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_lpuid(ioim->bfa));
- }
- if (itnim->seq_rec ||
- (bfa_cb_ioim_get_size(ioim->dio) & (sizeof(u32) - 1)))
- bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_lpuid(ioim->bfa));
-
-#ifdef IOIM_ADVANCED
- m->cmnd.crn = bfa_cb_ioim_get_crn(ioim->dio);
- m->cmnd.priority = bfa_cb_ioim_get_priority(ioim->dio);
- m->cmnd.taskattr = bfa_cb_ioim_get_taskattr(ioim->dio);
-
- /**
- * Handle large CDB (>16 bytes).
- */
- m->cmnd.addl_cdb_len = (bfa_cb_ioim_get_cdblen(ioim->dio) -
- FCP_CMND_CDB_LEN) / sizeof(u32);
- if (m->cmnd.addl_cdb_len) {
- bfa_os_memcpy(&m->cmnd.cdb + 1, (struct scsi_cdb_s *)
- bfa_cb_ioim_get_cdb(ioim->dio) + 1,
- m->cmnd.addl_cdb_len * sizeof(u32));
- fcp_cmnd_fcpdl(&m->cmnd) =
- bfa_os_htonl(bfa_cb_ioim_get_size(ioim->dio));
- }
-#endif
-
- /**
- * queue I/O message to firmware
- */
- bfa_reqq_produce(ioim->bfa, ioim->reqq);
- return BFA_TRUE;
-}
-
-/**
- * Setup any additional SG pages needed.Inline SG element is setup
- * at queuing time.
- */
-static bfa_boolean_t
-bfa_ioim_sge_setup(struct bfa_ioim_s *ioim)
-{
- u16 nsgpgs;
-
- bfa_assert(ioim->nsges > BFI_SGE_INLINE);
-
- /**
- * allocate SG pages needed
- */
- nsgpgs = BFA_SGPG_NPAGE(ioim->nsges);
- if (!nsgpgs)
- return BFA_TRUE;
-
- if (bfa_sgpg_malloc(ioim->bfa, &ioim->sgpg_q, nsgpgs)
- != BFA_STATUS_OK) {
- bfa_sgpg_wait(ioim->bfa, &ioim->iosp->sgpg_wqe, nsgpgs);
- return BFA_FALSE;
- }
-
- ioim->nsgpgs = nsgpgs;
- bfa_ioim_sgpg_setup(ioim);
-
- return BFA_TRUE;
-}
-
-static void
-bfa_ioim_sgpg_setup(struct bfa_ioim_s *ioim)
-{
- int sgeid, nsges, i;
- struct bfi_sge_s *sge;
- struct bfa_sgpg_s *sgpg;
- u32 pgcumsz;
- u64 addr;
- struct scatterlist *sg;
- struct scsi_cmnd *cmnd = (struct scsi_cmnd *) ioim->dio;
-
- sgeid = BFI_SGE_INLINE;
- ioim->sgpg = sgpg = bfa_q_first(&ioim->sgpg_q);
-
- sg = scsi_sglist(cmnd);
- sg = sg_next(sg);
-
- do {
- sge = sgpg->sgpg->sges;
- nsges = ioim->nsges - sgeid;
- if (nsges > BFI_SGPG_DATA_SGES)
- nsges = BFI_SGPG_DATA_SGES;
-
- pgcumsz = 0;
- for (i = 0; i < nsges; i++, sge++, sgeid++, sg = sg_next(sg)) {
- addr = bfa_os_sgaddr(sg_dma_address(sg));
- sge->sga = *(union bfi_addr_u *) &addr;
- sge->sg_len = sg_dma_len(sg);
- pgcumsz += sge->sg_len;
-
- /**
- * set flags
- */
- if (i < (nsges - 1))
- sge->flags = BFI_SGE_DATA;
- else if (sgeid < (ioim->nsges - 1))
- sge->flags = BFI_SGE_DATA_CPL;
- else
- sge->flags = BFI_SGE_DATA_LAST;
- }
-
- sgpg = (struct bfa_sgpg_s *) bfa_q_next(sgpg);
-
- /**
- * set the link element of each page
- */
- if (sgeid == ioim->nsges) {
- sge->flags = BFI_SGE_PGDLEN;
- sge->sga.a32.addr_lo = 0;
- sge->sga.a32.addr_hi = 0;
- } else {
- sge->flags = BFI_SGE_LINK;
- sge->sga = sgpg->sgpg_pa;
- }
- sge->sg_len = pgcumsz;
- } while (sgeid < ioim->nsges);
-}
-
-/**
- * Send I/O abort request to firmware.
- */
-static bfa_boolean_t
-bfa_ioim_send_abort(struct bfa_ioim_s *ioim)
-{
- struct bfi_ioim_abort_req_s *m;
- enum bfi_ioim_h2i msgop;
-
- /**
- * check for room in queue to send request now
- */
- m = bfa_reqq_next(ioim->bfa, ioim->reqq);
- if (!m)
- return BFA_FALSE;
-
- /**
- * build i/o request message next
- */
- if (ioim->iosp->abort_explicit)
- msgop = BFI_IOIM_H2I_IOABORT_REQ;
- else
- msgop = BFI_IOIM_H2I_IOCLEANUP_REQ;
-
- bfi_h2i_set(m->mh, BFI_MC_IOIM, msgop, bfa_lpuid(ioim->bfa));
- m->io_tag = bfa_os_htons(ioim->iotag);
- m->abort_tag = ++ioim->abort_tag;
-
- /**
- * queue I/O message to firmware
- */
- bfa_reqq_produce(ioim->bfa, ioim->reqq);
- return BFA_TRUE;
-}
-
-/**
- * Call to resume any I/O requests waiting for room in request queue.
- */
-static void
-bfa_ioim_qresume(void *cbarg)
-{
- struct bfa_ioim_s *ioim = cbarg;
-
- bfa_fcpim_stats(ioim->fcpim, qresumes);
- bfa_sm_send_event(ioim, BFA_IOIM_SM_QRESUME);
-}
-
-
-static void
-bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim)
-{
- /**
- * Move IO from itnim queue to fcpim global queue since itnim will be
- * freed.
- */
- list_del(&ioim->qe);
- list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
-
- if (!ioim->iosp->tskim) {
- if (ioim->fcpim->delay_comp && ioim->itnim->iotov_active) {
- bfa_cb_dequeue(&ioim->hcb_qe);
- list_del(&ioim->qe);
- list_add_tail(&ioim->qe, &ioim->itnim->delay_comp_q);
- }
- bfa_itnim_iodone(ioim->itnim);
- } else
- bfa_tskim_iodone(ioim->iosp->tskim);
-}
-
-/**
- * or after the link comes back.
- */
-void
-bfa_ioim_delayed_comp(struct bfa_ioim_s *ioim, bfa_boolean_t iotov)
-{
- /**
- * If path tov timer expired, failback with PATHTOV status - these
- * IO requests are not normally retried by IO stack.
- *
- * Otherwise device cameback online and fail it with normal failed
- * status so that IO stack retries these failed IO requests.
- */
- if (iotov)
- ioim->io_cbfn = __bfa_cb_ioim_pathtov;
- else
- ioim->io_cbfn = __bfa_cb_ioim_failed;
-
- bfa_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);
-}
-
-
-
-/**
- * bfa_ioim_friend
- */
-
-/**
- * Memory allocation and initialization.
- */
-void
-bfa_ioim_attach(struct bfa_fcpim_mod_s *fcpim, struct bfa_meminfo_s *minfo)
-{
- struct bfa_ioim_s *ioim;
- struct bfa_ioim_sp_s *iosp;
- u16 i;
- u8 *snsinfo;
- u32 snsbufsz;
-
- /**
- * claim memory first
- */
- ioim = (struct bfa_ioim_s *) bfa_meminfo_kva(minfo);
- fcpim->ioim_arr = ioim;
- bfa_meminfo_kva(minfo) = (u8 *) (ioim + fcpim->num_ioim_reqs);
-
- iosp = (struct bfa_ioim_sp_s *) bfa_meminfo_kva(minfo);
- fcpim->ioim_sp_arr = iosp;
- bfa_meminfo_kva(minfo) = (u8 *) (iosp + fcpim->num_ioim_reqs);
-
- /**
- * Claim DMA memory for per IO sense data.
- */
- snsbufsz = fcpim->num_ioim_reqs * BFI_IOIM_SNSLEN;
- fcpim->snsbase.pa = bfa_meminfo_dma_phys(minfo);
- bfa_meminfo_dma_phys(minfo) += snsbufsz;
-
- fcpim->snsbase.kva = bfa_meminfo_dma_virt(minfo);
- bfa_meminfo_dma_virt(minfo) += snsbufsz;
- snsinfo = fcpim->snsbase.kva;
- bfa_iocfc_set_snsbase(fcpim->bfa, fcpim->snsbase.pa);
-
- /**
- * Initialize ioim free queues
- */
- INIT_LIST_HEAD(&fcpim->ioim_free_q);
- INIT_LIST_HEAD(&fcpim->ioim_resfree_q);
- INIT_LIST_HEAD(&fcpim->ioim_comp_q);
-
- for (i = 0; i < fcpim->num_ioim_reqs;
- i++, ioim++, iosp++, snsinfo += BFI_IOIM_SNSLEN) {
- /*
- * initialize IOIM
- */
- bfa_os_memset(ioim, 0, sizeof(struct bfa_ioim_s));
- ioim->iotag = i;
- ioim->bfa = fcpim->bfa;
- ioim->fcpim = fcpim;
- ioim->iosp = iosp;
- iosp->snsinfo = snsinfo;
- INIT_LIST_HEAD(&ioim->sgpg_q);
- bfa_reqq_winit(&ioim->iosp->reqq_wait,
- bfa_ioim_qresume, ioim);
- bfa_sgpg_winit(&ioim->iosp->sgpg_wqe,
- bfa_ioim_sgpg_alloced, ioim);
- bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
-
- list_add_tail(&ioim->qe, &fcpim->ioim_free_q);
- }
-}
-
-/**
- * Driver detach time call.
- */
-void
-bfa_ioim_detach(struct bfa_fcpim_mod_s *fcpim)
-{
-}
-
-void
-bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
-{
- struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
- struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m;
- struct bfa_ioim_s *ioim;
- u16 iotag;
- enum bfa_ioim_event evt = BFA_IOIM_SM_COMP;
-
- iotag = bfa_os_ntohs(rsp->io_tag);
-
- ioim = BFA_IOIM_FROM_TAG(fcpim, iotag);
- bfa_assert(ioim->iotag == iotag);
-
- bfa_trc(ioim->bfa, ioim->iotag);
- bfa_trc(ioim->bfa, rsp->io_status);
- bfa_trc(ioim->bfa, rsp->reuse_io_tag);
-
- if (bfa_sm_cmp_state(ioim, bfa_ioim_sm_active))
- bfa_os_assign(ioim->iosp->comp_rspmsg, *m);
-
- switch (rsp->io_status) {
- case BFI_IOIM_STS_OK:
- bfa_fcpim_stats(fcpim, 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:
- case BFI_IOIM_STS_ABORTED:
- rsp->io_status = BFI_IOIM_STS_ABORTED;
- bfa_fcpim_stats(fcpim, 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_fcpim_stats(fcpim, iocom_proto_err);
- bfa_assert(rsp->reuse_io_tag);
- evt = BFA_IOIM_SM_COMP;
- break;
-
- case BFI_IOIM_STS_SQER_NEEDED:
- bfa_fcpim_stats(fcpim, iocom_sqer_needed);
- bfa_assert(rsp->reuse_io_tag == 0);
- evt = BFA_IOIM_SM_SQRETRY;
- break;
-
- case BFI_IOIM_STS_RES_FREE:
- bfa_fcpim_stats(fcpim, iocom_res_free);
- evt = BFA_IOIM_SM_FREE;
- break;
-
- case BFI_IOIM_STS_HOST_ABORTED:
- bfa_fcpim_stats(fcpim, 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_fcpim_stats(fcpim, iocom_utags);
- evt = BFA_IOIM_SM_COMP_UTAG;
- break;
-
- default:
- bfa_assert(0);
- }
-
- bfa_sm_send_event(ioim, evt);
-}
-
-void
-bfa_ioim_good_comp_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
-{
- struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
- struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m;
- struct bfa_ioim_s *ioim;
- u16 iotag;
-
- iotag = bfa_os_ntohs(rsp->io_tag);
-
- ioim = BFA_IOIM_FROM_TAG(fcpim, iotag);
- bfa_assert(ioim->iotag == iotag);
-
- bfa_trc_fp(ioim->bfa, ioim->iotag);
- 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_fcpim_stats(ioim->fcpim, 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_fcpim_stats(ioim->fcpim, 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_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_sm_send_event(ioim, BFA_IOIM_SM_IOTOV);
-}
-
-
-
-/**
- * bfa_ioim_api
- */
-
-/**
- * Allocate IOIM resource for initiator mode I/O request.
- */
-struct bfa_ioim_s *
-bfa_ioim_alloc(struct bfa_s *bfa, struct bfad_ioim_s *dio,
- struct bfa_itnim_s *itnim, u16 nsges)
-{
- struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
- struct bfa_ioim_s *ioim;
-
- /**
- * alocate IOIM resource
- */
- bfa_q_deq(&fcpim->ioim_free_q, &ioim);
- if (!ioim) {
- bfa_fcpim_stats(fcpim, no_iotags);
- return NULL;
- }
-
- ioim->dio = dio;
- ioim->itnim = itnim;
- ioim->nsges = nsges;
- ioim->nsgpgs = 0;
-
- bfa_stats(fcpim, total_ios);
- bfa_stats(itnim, ios);
- fcpim->ios_active++;
-
- list_add_tail(&ioim->qe, &itnim->io_q);
- bfa_trc_fp(ioim->bfa, ioim->iotag);
-
- return ioim;
-}
-
-void
-bfa_ioim_free(struct bfa_ioim_s *ioim)
-{
- struct bfa_fcpim_mod_s *fcpim = ioim->fcpim;
-
- bfa_trc_fp(ioim->bfa, ioim->iotag);
- bfa_assert_fp(bfa_sm_cmp_state(ioim, bfa_ioim_sm_uninit));
-
- bfa_assert_fp(list_empty(&ioim->sgpg_q)
- || (ioim->nsges > BFI_SGE_INLINE));
-
- if (ioim->nsgpgs > 0)
- bfa_sgpg_mfree(ioim->bfa, &ioim->sgpg_q, ioim->nsgpgs);
-
- bfa_stats(ioim->itnim, io_comps);
- fcpim->ios_active--;
-
- list_del(&ioim->qe);
- list_add_tail(&ioim->qe, &fcpim->ioim_free_q);
-}
-
-void
-bfa_ioim_start(struct bfa_ioim_s *ioim)
-{
- bfa_trc_fp(ioim->bfa, ioim->iotag);
-
- /**
- * Obtain the queue over which this request has to be issued
- */
- ioim->reqq = bfa_fcpim_ioredirect_enabled(ioim->bfa) ?
- bfa_cb_ioim_get_reqq(ioim->dio) :
- bfa_itnim_get_reqq(ioim);
-
- bfa_sm_send_event(ioim, BFA_IOIM_SM_START);
-}
-
-/**
- * Driver I/O abort request.
- */
-void
-bfa_ioim_abort(struct bfa_ioim_s *ioim)
-{
- bfa_trc(ioim->bfa, ioim->iotag);
- bfa_fcpim_stats(ioim->fcpim, io_aborts);
- bfa_sm_send_event(ioim, BFA_IOIM_SM_ABORT);
-}
-
-
projects / mv-sheeva.git / blobdiff