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Diffstat (limited to 'drivers/scsi/bfa/bfa_tskim.c')
-rw-r--r--drivers/scsi/bfa/bfa_tskim.c690
1 files changed, 0 insertions, 690 deletions
diff --git a/drivers/scsi/bfa/bfa_tskim.c b/drivers/scsi/bfa/bfa_tskim.c
deleted file mode 100644
index ad9aaaedd3f1..000000000000
--- a/drivers/scsi/bfa/bfa_tskim.c
+++ /dev/null
@@ -1,690 +0,0 @@
-/*
- * 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 <bfa_cb_ioim_macros.h>
-
-BFA_TRC_FILE(HAL, TSKIM);
-
-/**
- * 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)
-
-/*
- * forward declarations
- */
-static void __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete);
-static void __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete);
-static bfa_boolean_t bfa_tskim_match_scope(struct bfa_tskim_s *tskim,
- lun_t lun);
-static void bfa_tskim_gather_ios(struct bfa_tskim_s *tskim);
-static void bfa_tskim_cleanp_comp(void *tskim_cbarg);
-static void bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim);
-static bfa_boolean_t bfa_tskim_send(struct bfa_tskim_s *tskim);
-static bfa_boolean_t bfa_tskim_send_abort(struct bfa_tskim_s *tskim);
-static void bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim);
-
-/**
- * bfa_tskim_sm
- */
-
-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 */
-};
-
-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);
-
-/**
- * Task management command beginning state.
- */
-static void
-bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
-{
- bfa_trc(tskim->bfa, event);
-
- switch (event) {
- case BFA_TSKIM_SM_START:
- bfa_sm_set_state(tskim, bfa_tskim_sm_active);
- bfa_tskim_gather_ios(tskim);
-
- /**
- * If device is offline, do not send TM on wire. Just cleanup
- * any pending IO requests and complete TM request.
- */
- if (!bfa_itnim_is_online(tskim->itnim)) {
- bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
- tskim->tsk_status = BFI_TSKIM_STS_OK;
- bfa_tskim_cleanup_ios(tskim);
- return;
- }
-
- if (!bfa_tskim_send(tskim)) {
- bfa_sm_set_state(tskim, bfa_tskim_sm_qfull);
- bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
- &tskim->reqq_wait);
- }
- break;
-
- default:
- bfa_sm_fault(tskim->bfa, event);
- }
-}
-
-/**
- * brief
- * TM command is active, awaiting completion from firmware to
- * cleanup IO requests in TM scope.
- */
-static void
-bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
-{
- bfa_trc(tskim->bfa, event);
-
- switch (event) {
- case BFA_TSKIM_SM_DONE:
- bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
- bfa_tskim_cleanup_ios(tskim);
- break;
-
- case BFA_TSKIM_SM_CLEANUP:
- bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
- if (!bfa_tskim_send_abort(tskim)) {
- bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup_qfull);
- bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
- &tskim->reqq_wait);
- }
- break;
-
- case BFA_TSKIM_SM_HWFAIL:
- bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
- bfa_tskim_iocdisable_ios(tskim);
- bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
- break;
-
- default:
- bfa_sm_fault(tskim->bfa, event);
- }
-}
-
-/**
- * An active TM is being cleaned up since ITN is offline. Awaiting cleanup
- * completion event from firmware.
- */
-static void
-bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
-{
- bfa_trc(tskim->bfa, event);
-
- switch (event) {
- case BFA_TSKIM_SM_DONE:
- /**
- * Ignore and wait for ABORT completion from firmware.
- */
- break;
-
- case BFA_TSKIM_SM_CLEANUP_DONE:
- bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
- bfa_tskim_cleanup_ios(tskim);
- break;
-
- case BFA_TSKIM_SM_HWFAIL:
- bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
- bfa_tskim_iocdisable_ios(tskim);
- bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
- break;
-
- default:
- bfa_sm_fault(tskim->bfa, event);
- }
-}
-
-static void
-bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
-{
- bfa_trc(tskim->bfa, event);
-
- switch (event) {
- case BFA_TSKIM_SM_IOS_DONE:
- bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
- bfa_tskim_qcomp(tskim, __bfa_cb_tskim_done);
- break;
-
- case BFA_TSKIM_SM_CLEANUP:
- /**
- * Ignore, TM command completed on wire.
- * Notify TM conmpletion on IO cleanup completion.
- */
- break;
-
- case BFA_TSKIM_SM_HWFAIL:
- bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
- bfa_tskim_iocdisable_ios(tskim);
- bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
- break;
-
- default:
- bfa_sm_fault(tskim->bfa, event);
- }
-}
-
-/**
- * Task management command is waiting for room in request CQ
- */
-static void
-bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
-{
- bfa_trc(tskim->bfa, event);
-
- switch (event) {
- case BFA_TSKIM_SM_QRESUME:
- bfa_sm_set_state(tskim, bfa_tskim_sm_active);
- bfa_tskim_send(tskim);
- break;
-
- case BFA_TSKIM_SM_CLEANUP:
- /**
- * No need to send TM on wire since ITN is offline.
- */
- bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
- bfa_reqq_wcancel(&tskim->reqq_wait);
- bfa_tskim_cleanup_ios(tskim);
- break;
-
- case BFA_TSKIM_SM_HWFAIL:
- bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
- bfa_reqq_wcancel(&tskim->reqq_wait);
- bfa_tskim_iocdisable_ios(tskim);
- bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
- break;
-
- default:
- bfa_sm_fault(tskim->bfa, event);
- }
-}
-
-/**
- * Task management command is active, awaiting for room in request CQ
- * to send clean up request.
- */
-static void
-bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
- enum bfa_tskim_event event)
-{
- bfa_trc(tskim->bfa, event);
-
- switch (event) {
- case BFA_TSKIM_SM_DONE:
- bfa_reqq_wcancel(&tskim->reqq_wait);
- /**
- *
- * Fall through !!!
- */
-
- case BFA_TSKIM_SM_QRESUME:
- bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
- bfa_tskim_send_abort(tskim);
- break;
-
- case BFA_TSKIM_SM_HWFAIL:
- bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
- bfa_reqq_wcancel(&tskim->reqq_wait);
- bfa_tskim_iocdisable_ios(tskim);
- bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
- break;
-
- default:
- bfa_sm_fault(tskim->bfa, event);
- }
-}
-
-/**
- * BFA callback is pending
- */
-static void
-bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
-{
- bfa_trc(tskim->bfa, event);
-
- switch (event) {
- case BFA_TSKIM_SM_HCB:
- bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
- bfa_tskim_free(tskim);
- break;
-
- case BFA_TSKIM_SM_CLEANUP:
- bfa_tskim_notify_comp(tskim);
- break;
-
- case BFA_TSKIM_SM_HWFAIL:
- break;
-
- default:
- bfa_sm_fault(tskim->bfa, event);
- }
-}
-
-
-
-/**
- * bfa_tskim_private
- */
-
-static void
-__bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete)
-{
- struct bfa_tskim_s *tskim = cbarg;
-
- if (!complete) {
- bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
- return;
- }
-
- bfa_stats(tskim->itnim, tm_success);
- bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, tskim->tsk_status);
-}
-
-static void
-__bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete)
-{
- struct bfa_tskim_s *tskim = cbarg;
-
- if (!complete) {
- bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
- return;
- }
-
- bfa_stats(tskim->itnim, tm_failures);
- bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk,
- BFI_TSKIM_STS_FAILED);
-}
-
-static bfa_boolean_t
-bfa_tskim_match_scope(struct bfa_tskim_s *tskim, lun_t lun)
-{
- switch (tskim->tm_cmnd) {
- case FCP_TM_TARGET_RESET:
- return BFA_TRUE;
-
- case FCP_TM_ABORT_TASK_SET:
- case FCP_TM_CLEAR_TASK_SET:
- case FCP_TM_LUN_RESET:
- case FCP_TM_CLEAR_ACA:
- return (tskim->lun == lun);
-
- default:
- bfa_assert(0);
- }
-
- return BFA_FALSE;
-}
-
-/**
- * Gather affected IO requests and task management commands.
- */
-static void
-bfa_tskim_gather_ios(struct bfa_tskim_s *tskim)
-{
- struct bfa_itnim_s *itnim = tskim->itnim;
- struct bfa_ioim_s *ioim;
- struct list_head *qe, *qen;
-
- INIT_LIST_HEAD(&tskim->io_q);
-
- /**
- * Gather any active IO requests first.
- */
- list_for_each_safe(qe, qen, &itnim->io_q) {
- ioim = (struct bfa_ioim_s *) qe;
- if (bfa_tskim_match_scope
- (tskim, bfa_cb_ioim_get_lun(ioim->dio))) {
- list_del(&ioim->qe);
- list_add_tail(&ioim->qe, &tskim->io_q);
- }
- }
-
- /**
- * Failback any pending IO requests immediately.
- */
- list_for_each_safe(qe, qen, &itnim->pending_q) {
- ioim = (struct bfa_ioim_s *) qe;
- if (bfa_tskim_match_scope
- (tskim, bfa_cb_ioim_get_lun(ioim->dio))) {
- list_del(&ioim->qe);
- list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
- bfa_ioim_tov(ioim);
- }
- }
-}
-
-/**
- * IO cleanup completion
- */
-static void
-bfa_tskim_cleanp_comp(void *tskim_cbarg)
-{
- struct bfa_tskim_s *tskim = tskim_cbarg;
-
- bfa_stats(tskim->itnim, tm_io_comps);
- bfa_sm_send_event(tskim, BFA_TSKIM_SM_IOS_DONE);
-}
-
-/**
- * Gather affected IO requests and task management commands.
- */
-static void
-bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim)
-{
- struct bfa_ioim_s *ioim;
- struct list_head *qe, *qen;
-
- bfa_wc_init(&tskim->wc, bfa_tskim_cleanp_comp, tskim);
-
- list_for_each_safe(qe, qen, &tskim->io_q) {
- ioim = (struct bfa_ioim_s *) qe;
- bfa_wc_up(&tskim->wc);
- bfa_ioim_cleanup_tm(ioim, tskim);
- }
-
- bfa_wc_wait(&tskim->wc);
-}
-
-/**
- * Send task management request to firmware.
- */
-static bfa_boolean_t
-bfa_tskim_send(struct bfa_tskim_s *tskim)
-{
- struct bfa_itnim_s *itnim = tskim->itnim;
- struct bfi_tskim_req_s *m;
-
- /**
- * check for room in queue to send request now
- */
- m = bfa_reqq_next(tskim->bfa, itnim->reqq);
- if (!m)
- return BFA_FALSE;
-
- /**
- * build i/o request message next
- */
- bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_TM_REQ,
- bfa_lpuid(tskim->bfa));
-
- m->tsk_tag = bfa_os_htons(tskim->tsk_tag);
- m->itn_fhdl = tskim->itnim->rport->fw_handle;
- m->t_secs = tskim->tsecs;
- m->lun = tskim->lun;
- m->tm_flags = tskim->tm_cmnd;
-
- /**
- * queue I/O message to firmware
- */
- bfa_reqq_produce(tskim->bfa, itnim->reqq);
- return BFA_TRUE;
-}
-
-/**
- * Send abort request to cleanup an active TM to firmware.
- */
-static bfa_boolean_t
-bfa_tskim_send_abort(struct bfa_tskim_s *tskim)
-{
- struct bfa_itnim_s *itnim = tskim->itnim;
- struct bfi_tskim_abortreq_s *m;
-
- /**
- * check for room in queue to send request now
- */
- m = bfa_reqq_next(tskim->bfa, itnim->reqq);
- if (!m)
- return BFA_FALSE;
-
- /**
- * build i/o request message next
- */
- bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_ABORT_REQ,
- bfa_lpuid(tskim->bfa));
-
- m->tsk_tag = bfa_os_htons(tskim->tsk_tag);
-
- /**
- * queue I/O message to firmware
- */
- bfa_reqq_produce(tskim->bfa, itnim->reqq);
- return BFA_TRUE;
-}
-
-/**
- * Call to resume task management cmnd waiting for room in request queue.
- */
-static void
-bfa_tskim_qresume(void *cbarg)
-{
- struct bfa_tskim_s *tskim = cbarg;
-
- bfa_fcpim_stats(tskim->fcpim, qresumes);
- 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);
- }
-}
-
-
-
-/**
- * bfa_tskim_friend
- */
-
-/**
- * Notification on completions from related ioim.
- */
-void
-bfa_tskim_iodone(struct bfa_tskim_s *tskim)
-{
- bfa_wc_down(&tskim->wc);
-}
-
-/**
- * Handle IOC h/w failure notification from itnim.
- */
-void
-bfa_tskim_iocdisable(struct bfa_tskim_s *tskim)
-{
- tskim->notify = BFA_FALSE;
- bfa_stats(tskim->itnim, tm_iocdowns);
- bfa_sm_send_event(tskim, BFA_TSKIM_SM_HWFAIL);
-}
-
-/**
- * Cleanup TM command and associated IOs as part of ITNIM offline.
- */
-void
-bfa_tskim_cleanup(struct bfa_tskim_s *tskim)
-{
- tskim->notify = BFA_TRUE;
- bfa_stats(tskim->itnim, tm_cleanups);
- bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP);
-}
-
-/**
- * Memory allocation and initialization.
- */
-void
-bfa_tskim_attach(struct bfa_fcpim_mod_s *fcpim, struct bfa_meminfo_s *minfo)
-{
- struct bfa_tskim_s *tskim;
- u16 i;
-
- INIT_LIST_HEAD(&fcpim->tskim_free_q);
-
- tskim = (struct bfa_tskim_s *) bfa_meminfo_kva(minfo);
- fcpim->tskim_arr = tskim;
-
- for (i = 0; i < fcpim->num_tskim_reqs; i++, tskim++) {
- /*
- * initialize TSKIM
- */
- bfa_os_memset(tskim, 0, sizeof(struct bfa_tskim_s));
- tskim->tsk_tag = i;
- tskim->bfa = fcpim->bfa;
- tskim->fcpim = fcpim;
- tskim->notify = BFA_FALSE;
- bfa_reqq_winit(&tskim->reqq_wait, bfa_tskim_qresume,
- tskim);
- bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
-
- list_add_tail(&tskim->qe, &fcpim->tskim_free_q);
- }
-
- bfa_meminfo_kva(minfo) = (u8 *) tskim;
-}
-
-void
-bfa_tskim_detach(struct bfa_fcpim_mod_s *fcpim)
-{
- /**
- * @todo
- */
-}
-
-void
-bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
-{
- struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
- struct bfi_tskim_rsp_s *rsp = (struct bfi_tskim_rsp_s *) m;
- struct bfa_tskim_s *tskim;
- u16 tsk_tag = bfa_os_ntohs(rsp->tsk_tag);
-
- tskim = BFA_TSKIM_FROM_TAG(fcpim, tsk_tag);
- bfa_assert(tskim->tsk_tag == tsk_tag);
-
- tskim->tsk_status = rsp->tsk_status;
-
- /**
- * Firmware sends BFI_TSKIM_STS_ABORTED status for abort
- * requests. All other statuses are for normal completions.
- */
- if (rsp->tsk_status == BFI_TSKIM_STS_ABORTED) {
- bfa_stats(tskim->itnim, tm_cleanup_comps);
- bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP_DONE);
- } else {
- bfa_stats(tskim->itnim, tm_fw_rsps);
- bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE);
- }
-}
-
-
-
-/**
- * bfa_tskim_api
- */
-
-
-struct bfa_tskim_s *
-bfa_tskim_alloc(struct bfa_s *bfa, struct bfad_tskim_s *dtsk)
-{
- struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
- struct bfa_tskim_s *tskim;
-
- bfa_q_deq(&fcpim->tskim_free_q, &tskim);
-
- if (!tskim)
- bfa_fcpim_stats(fcpim, no_tskims);
- else
- tskim->dtsk = dtsk;
-
- return tskim;
-}
-
-void
-bfa_tskim_free(struct bfa_tskim_s *tskim)
-{
- bfa_assert(bfa_q_is_on_q_func(&tskim->itnim->tsk_q, &tskim->qe));
- list_del(&tskim->qe);
- list_add_tail(&tskim->qe, &tskim->fcpim->tskim_free_q);
-}
-
-/**
- * Start a task management command.
- *
- * @param[in] tskim BFA task management command instance
- * @param[in] itnim i-t nexus for the task management command
- * @param[in] lun lun, if applicable
- * @param[in] tm_cmnd Task management command code.
- * @param[in] t_secs Timeout in seconds
- *
- * @return None.
- */
-void
-bfa_tskim_start(struct bfa_tskim_s *tskim, struct bfa_itnim_s *itnim, lun_t lun,
- enum fcp_tm_cmnd tm_cmnd, u8 tsecs)
-{
- tskim->itnim = itnim;
- tskim->lun = lun;
- tskim->tm_cmnd = tm_cmnd;
- tskim->tsecs = tsecs;
- tskim->notify = BFA_FALSE;
- bfa_stats(itnim, tm_cmnds);
-
- list_add_tail(&tskim->qe, &itnim->tsk_q);
- bfa_sm_send_event(tskim, BFA_TSKIM_SM_START);
-}
-
-