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![Saurav Kashyap](/assets/img/avatar_default.png)
Separate out abort and cleanup flag and completion, to have better understaning of what is getting processed. Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
897 lines
24 KiB
C
897 lines
24 KiB
C
/* bnx2fc_tgt.c: QLogic Linux FCoE offload driver.
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* Handles operations such as session offload/upload etc, and manages
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* session resources such as connection id and qp resources.
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*
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* Copyright (c) 2008-2013 Broadcom Corporation
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* Copyright (c) 2014-2016 QLogic Corporation
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* Copyright (c) 2016-2017 Cavium Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation.
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*
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* Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
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*/
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#include "bnx2fc.h"
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static void bnx2fc_upld_timer(struct timer_list *t);
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static void bnx2fc_ofld_timer(struct timer_list *t);
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static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
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struct fcoe_port *port,
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struct fc_rport_priv *rdata);
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static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
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struct bnx2fc_rport *tgt);
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static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
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struct bnx2fc_rport *tgt);
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static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
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struct bnx2fc_rport *tgt);
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static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id);
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static void bnx2fc_upld_timer(struct timer_list *t)
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{
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struct bnx2fc_rport *tgt = from_timer(tgt, t, upld_timer);
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BNX2FC_TGT_DBG(tgt, "upld_timer - Upload compl not received!!\n");
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/* fake upload completion */
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clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
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clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
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set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
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wake_up_interruptible(&tgt->upld_wait);
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}
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static void bnx2fc_ofld_timer(struct timer_list *t)
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{
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struct bnx2fc_rport *tgt = from_timer(tgt, t, ofld_timer);
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BNX2FC_TGT_DBG(tgt, "entered bnx2fc_ofld_timer\n");
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/* NOTE: This function should never be called, as
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* offload should never timeout
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*/
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/*
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* If the timer has expired, this session is dead
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* Clear offloaded flag and logout of this device.
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* Since OFFLOADED flag is cleared, this case
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* will be considered as offload error and the
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* port will be logged off, and conn_id, session
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* resources are freed up in bnx2fc_offload_session
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*/
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clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
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clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags);
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set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
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wake_up_interruptible(&tgt->ofld_wait);
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}
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static void bnx2fc_ofld_wait(struct bnx2fc_rport *tgt)
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{
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timer_setup(&tgt->ofld_timer, bnx2fc_ofld_timer, 0);
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mod_timer(&tgt->ofld_timer, jiffies + BNX2FC_FW_TIMEOUT);
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wait_event_interruptible(tgt->ofld_wait,
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(test_bit(
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BNX2FC_FLAG_OFLD_REQ_CMPL,
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&tgt->flags)));
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if (signal_pending(current))
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flush_signals(current);
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del_timer_sync(&tgt->ofld_timer);
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}
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static void bnx2fc_offload_session(struct fcoe_port *port,
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struct bnx2fc_rport *tgt,
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struct fc_rport_priv *rdata)
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{
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struct fc_rport *rport = rdata->rport;
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struct bnx2fc_interface *interface = port->priv;
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struct bnx2fc_hba *hba = interface->hba;
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int rval;
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int i = 0;
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/* Initialize bnx2fc_rport */
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/* NOTE: tgt is already bzero'd */
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rval = bnx2fc_init_tgt(tgt, port, rdata);
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if (rval) {
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printk(KERN_ERR PFX "Failed to allocate conn id for "
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"port_id (%6x)\n", rport->port_id);
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goto tgt_init_err;
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}
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/* Allocate session resources */
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rval = bnx2fc_alloc_session_resc(hba, tgt);
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if (rval) {
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printk(KERN_ERR PFX "Failed to allocate resources\n");
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goto ofld_err;
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}
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/*
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* Initialize FCoE session offload process.
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* Upon completion of offload process add
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* rport to list of rports
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*/
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retry_ofld:
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clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
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rval = bnx2fc_send_session_ofld_req(port, tgt);
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if (rval) {
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printk(KERN_ERR PFX "ofld_req failed\n");
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goto ofld_err;
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}
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/*
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* wait for the session is offloaded and enabled. 3 Secs
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* should be ample time for this process to complete.
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*/
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bnx2fc_ofld_wait(tgt);
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if (!(test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags))) {
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if (test_and_clear_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE,
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&tgt->flags)) {
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BNX2FC_TGT_DBG(tgt, "ctx_alloc_failure, "
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"retry ofld..%d\n", i++);
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msleep_interruptible(1000);
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if (i > 3) {
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i = 0;
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goto ofld_err;
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}
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goto retry_ofld;
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}
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goto ofld_err;
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}
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if (bnx2fc_map_doorbell(tgt)) {
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printk(KERN_ERR PFX "map doorbell failed - no mem\n");
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goto ofld_err;
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}
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clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
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rval = bnx2fc_send_session_enable_req(port, tgt);
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if (rval) {
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pr_err(PFX "enable session failed\n");
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goto ofld_err;
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}
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bnx2fc_ofld_wait(tgt);
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if (!(test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags)))
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goto ofld_err;
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return;
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ofld_err:
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/* couldn't offload the session. log off from this rport */
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BNX2FC_TGT_DBG(tgt, "bnx2fc_offload_session - offload error\n");
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clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
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/* Free session resources */
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bnx2fc_free_session_resc(hba, tgt);
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tgt_init_err:
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if (tgt->fcoe_conn_id != -1)
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bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
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fc_rport_logoff(rdata);
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}
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void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt)
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{
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struct bnx2fc_cmd *io_req;
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struct bnx2fc_cmd *tmp;
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int rc;
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int i = 0;
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BNX2FC_TGT_DBG(tgt, "Entered flush_active_ios - %d\n",
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tgt->num_active_ios.counter);
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spin_lock_bh(&tgt->tgt_lock);
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tgt->flush_in_prog = 1;
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list_for_each_entry_safe(io_req, tmp, &tgt->active_cmd_queue, link) {
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i++;
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list_del_init(&io_req->link);
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io_req->on_active_queue = 0;
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BNX2FC_IO_DBG(io_req, "cmd_queue cleanup\n");
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if (cancel_delayed_work(&io_req->timeout_work)) {
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if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
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&io_req->req_flags)) {
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/* Handle eh_abort timeout */
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BNX2FC_IO_DBG(io_req, "eh_abort for IO "
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"cleaned up\n");
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complete(&io_req->abts_done);
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}
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kref_put(&io_req->refcount,
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bnx2fc_cmd_release); /* drop timer hold */
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}
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set_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags);
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set_bit(BNX2FC_FLAG_IO_CLEANUP, &io_req->req_flags);
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/* Do not issue cleanup when disable request failed */
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if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags))
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bnx2fc_process_cleanup_compl(io_req, io_req->task, 0);
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else {
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rc = bnx2fc_initiate_cleanup(io_req);
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BUG_ON(rc);
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}
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}
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list_for_each_entry_safe(io_req, tmp, &tgt->active_tm_queue, link) {
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i++;
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list_del_init(&io_req->link);
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io_req->on_tmf_queue = 0;
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BNX2FC_IO_DBG(io_req, "tm_queue cleanup\n");
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if (io_req->wait_for_abts_comp)
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complete(&io_req->abts_done);
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}
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list_for_each_entry_safe(io_req, tmp, &tgt->els_queue, link) {
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i++;
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list_del_init(&io_req->link);
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io_req->on_active_queue = 0;
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BNX2FC_IO_DBG(io_req, "els_queue cleanup\n");
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if (cancel_delayed_work(&io_req->timeout_work))
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kref_put(&io_req->refcount,
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bnx2fc_cmd_release); /* drop timer hold */
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if ((io_req->cb_func) && (io_req->cb_arg)) {
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io_req->cb_func(io_req->cb_arg);
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io_req->cb_arg = NULL;
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}
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/* Do not issue cleanup when disable request failed */
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if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags))
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bnx2fc_process_cleanup_compl(io_req, io_req->task, 0);
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else {
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rc = bnx2fc_initiate_cleanup(io_req);
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BUG_ON(rc);
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}
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}
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list_for_each_entry_safe(io_req, tmp, &tgt->io_retire_queue, link) {
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i++;
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list_del_init(&io_req->link);
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BNX2FC_IO_DBG(io_req, "retire_queue flush\n");
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if (cancel_delayed_work(&io_req->timeout_work)) {
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if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
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&io_req->req_flags)) {
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/* Handle eh_abort timeout */
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BNX2FC_IO_DBG(io_req, "eh_abort for IO "
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"in retire_q\n");
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if (io_req->wait_for_abts_comp)
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complete(&io_req->abts_done);
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}
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kref_put(&io_req->refcount, bnx2fc_cmd_release);
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}
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clear_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags);
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}
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BNX2FC_TGT_DBG(tgt, "IOs flushed = %d\n", i);
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i = 0;
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spin_unlock_bh(&tgt->tgt_lock);
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/* wait for active_ios to go to 0 */
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while ((tgt->num_active_ios.counter != 0) && (i++ < BNX2FC_WAIT_CNT))
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msleep(25);
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if (tgt->num_active_ios.counter != 0)
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printk(KERN_ERR PFX "CLEANUP on port 0x%x:"
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" active_ios = %d\n",
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tgt->rdata->ids.port_id, tgt->num_active_ios.counter);
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spin_lock_bh(&tgt->tgt_lock);
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tgt->flush_in_prog = 0;
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spin_unlock_bh(&tgt->tgt_lock);
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}
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static void bnx2fc_upld_wait(struct bnx2fc_rport *tgt)
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{
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timer_setup(&tgt->upld_timer, bnx2fc_upld_timer, 0);
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mod_timer(&tgt->upld_timer, jiffies + BNX2FC_FW_TIMEOUT);
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wait_event_interruptible(tgt->upld_wait,
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(test_bit(
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BNX2FC_FLAG_UPLD_REQ_COMPL,
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&tgt->flags)));
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if (signal_pending(current))
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flush_signals(current);
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del_timer_sync(&tgt->upld_timer);
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}
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static void bnx2fc_upload_session(struct fcoe_port *port,
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struct bnx2fc_rport *tgt)
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{
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struct bnx2fc_interface *interface = port->priv;
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struct bnx2fc_hba *hba = interface->hba;
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BNX2FC_TGT_DBG(tgt, "upload_session: active_ios = %d\n",
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tgt->num_active_ios.counter);
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/*
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* Called with hba->hba_mutex held.
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* This is a blocking call
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*/
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clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
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bnx2fc_send_session_disable_req(port, tgt);
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/*
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* wait for upload to complete. 3 Secs
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* should be sufficient time for this process to complete.
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*/
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BNX2FC_TGT_DBG(tgt, "waiting for disable compl\n");
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bnx2fc_upld_wait(tgt);
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/*
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* traverse thru the active_q and tmf_q and cleanup
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* IOs in these lists
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*/
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BNX2FC_TGT_DBG(tgt, "flush/upload - disable wait flags = 0x%lx\n",
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tgt->flags);
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bnx2fc_flush_active_ios(tgt);
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/* Issue destroy KWQE */
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if (test_bit(BNX2FC_FLAG_DISABLED, &tgt->flags)) {
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BNX2FC_TGT_DBG(tgt, "send destroy req\n");
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clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
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bnx2fc_send_session_destroy_req(hba, tgt);
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/* wait for destroy to complete */
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bnx2fc_upld_wait(tgt);
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if (!(test_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags)))
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printk(KERN_ERR PFX "ERROR!! destroy timed out\n");
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BNX2FC_TGT_DBG(tgt, "destroy wait complete flags = 0x%lx\n",
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tgt->flags);
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} else if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) {
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printk(KERN_ERR PFX "ERROR!! DISABLE req failed, destroy"
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" not sent to FW\n");
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} else {
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printk(KERN_ERR PFX "ERROR!! DISABLE req timed out, destroy"
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" not sent to FW\n");
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}
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/* Free session resources */
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bnx2fc_free_session_resc(hba, tgt);
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bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
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}
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static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
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struct fcoe_port *port,
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struct fc_rport_priv *rdata)
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{
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struct fc_rport *rport = rdata->rport;
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struct bnx2fc_interface *interface = port->priv;
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struct bnx2fc_hba *hba = interface->hba;
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struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db;
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struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db;
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tgt->rport = rport;
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tgt->rdata = rdata;
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tgt->port = port;
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if (hba->num_ofld_sess >= BNX2FC_NUM_MAX_SESS) {
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BNX2FC_TGT_DBG(tgt, "exceeded max sessions. logoff this tgt\n");
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tgt->fcoe_conn_id = -1;
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return -1;
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}
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tgt->fcoe_conn_id = bnx2fc_alloc_conn_id(hba, tgt);
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if (tgt->fcoe_conn_id == -1)
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return -1;
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BNX2FC_TGT_DBG(tgt, "init_tgt - conn_id = 0x%x\n", tgt->fcoe_conn_id);
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tgt->max_sqes = BNX2FC_SQ_WQES_MAX;
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tgt->max_rqes = BNX2FC_RQ_WQES_MAX;
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tgt->max_cqes = BNX2FC_CQ_WQES_MAX;
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atomic_set(&tgt->free_sqes, BNX2FC_SQ_WQES_MAX);
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/* Initialize the toggle bit */
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tgt->sq_curr_toggle_bit = 1;
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tgt->cq_curr_toggle_bit = 1;
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tgt->sq_prod_idx = 0;
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tgt->cq_cons_idx = 0;
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tgt->rq_prod_idx = 0x8000;
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tgt->rq_cons_idx = 0;
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atomic_set(&tgt->num_active_ios, 0);
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tgt->retry_delay_timestamp = 0;
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if (rdata->flags & FC_RP_FLAGS_RETRY &&
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rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
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!(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
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tgt->dev_type = TYPE_TAPE;
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tgt->io_timeout = 0; /* use default ULP timeout */
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} else {
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tgt->dev_type = TYPE_DISK;
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tgt->io_timeout = BNX2FC_IO_TIMEOUT;
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}
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/* initialize sq doorbell */
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sq_db->header.header = B577XX_DOORBELL_HDR_DB_TYPE;
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sq_db->header.header |= B577XX_FCOE_CONNECTION_TYPE <<
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B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT;
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/* initialize rx doorbell */
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rx_db->hdr.header = ((0x1 << B577XX_DOORBELL_HDR_RX_SHIFT) |
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(0x1 << B577XX_DOORBELL_HDR_DB_TYPE_SHIFT) |
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(B577XX_FCOE_CONNECTION_TYPE <<
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B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT));
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rx_db->params = (0x2 << B577XX_FCOE_RX_DOORBELL_NEGATIVE_ARM_SHIFT) |
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(0x3 << B577XX_FCOE_RX_DOORBELL_OPCODE_SHIFT);
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spin_lock_init(&tgt->tgt_lock);
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spin_lock_init(&tgt->cq_lock);
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/* Initialize active_cmd_queue list */
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INIT_LIST_HEAD(&tgt->active_cmd_queue);
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/* Initialize IO retire queue */
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INIT_LIST_HEAD(&tgt->io_retire_queue);
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INIT_LIST_HEAD(&tgt->els_queue);
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/* Initialize active_tm_queue list */
|
|
INIT_LIST_HEAD(&tgt->active_tm_queue);
|
|
|
|
init_waitqueue_head(&tgt->ofld_wait);
|
|
init_waitqueue_head(&tgt->upld_wait);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* This event_callback is called after successful completion of libfc
|
|
* initiated target login. bnx2fc can proceed with initiating the session
|
|
* establishment.
|
|
*/
|
|
void bnx2fc_rport_event_handler(struct fc_lport *lport,
|
|
struct fc_rport_priv *rdata,
|
|
enum fc_rport_event event)
|
|
{
|
|
struct fcoe_port *port = lport_priv(lport);
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
struct bnx2fc_hba *hba = interface->hba;
|
|
struct fc_rport *rport = rdata->rport;
|
|
struct fc_rport_libfc_priv *rp;
|
|
struct bnx2fc_rport *tgt;
|
|
u32 port_id;
|
|
|
|
BNX2FC_HBA_DBG(lport, "rport_event_hdlr: event = %d, port_id = 0x%x\n",
|
|
event, rdata->ids.port_id);
|
|
switch (event) {
|
|
case RPORT_EV_READY:
|
|
if (!rport) {
|
|
printk(KERN_ERR PFX "rport is NULL: ERROR!\n");
|
|
break;
|
|
}
|
|
|
|
rp = rport->dd_data;
|
|
if (rport->port_id == FC_FID_DIR_SERV) {
|
|
/*
|
|
* bnx2fc_rport structure doesn't exist for
|
|
* directory server.
|
|
* We should not come here, as lport will
|
|
* take care of fabric login
|
|
*/
|
|
printk(KERN_ERR PFX "%x - rport_event_handler ERROR\n",
|
|
rdata->ids.port_id);
|
|
break;
|
|
}
|
|
|
|
if (rdata->spp_type != FC_TYPE_FCP) {
|
|
BNX2FC_HBA_DBG(lport, "not FCP type target."
|
|
" not offloading\n");
|
|
break;
|
|
}
|
|
if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
|
|
BNX2FC_HBA_DBG(lport, "not FCP_TARGET"
|
|
" not offloading\n");
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Offlaod process is protected with hba mutex.
|
|
* Use the same mutex_lock for upload process too
|
|
*/
|
|
mutex_lock(&hba->hba_mutex);
|
|
tgt = (struct bnx2fc_rport *)&rp[1];
|
|
|
|
/* This can happen when ADISC finds the same target */
|
|
if (test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags)) {
|
|
BNX2FC_TGT_DBG(tgt, "already offloaded\n");
|
|
mutex_unlock(&hba->hba_mutex);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Offload the session. This is a blocking call, and will
|
|
* wait until the session is offloaded.
|
|
*/
|
|
bnx2fc_offload_session(port, tgt, rdata);
|
|
|
|
BNX2FC_TGT_DBG(tgt, "OFFLOAD num_ofld_sess = %d\n",
|
|
hba->num_ofld_sess);
|
|
|
|
if (test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags)) {
|
|
/* Session is offloaded and enabled. */
|
|
BNX2FC_TGT_DBG(tgt, "sess offloaded\n");
|
|
/* This counter is protected with hba mutex */
|
|
hba->num_ofld_sess++;
|
|
|
|
set_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags);
|
|
} else {
|
|
/*
|
|
* Offload or enable would have failed.
|
|
* In offload/enable completion path, the
|
|
* rport would have already been removed
|
|
*/
|
|
BNX2FC_TGT_DBG(tgt, "Port is being logged off as "
|
|
"offloaded flag not set\n");
|
|
}
|
|
mutex_unlock(&hba->hba_mutex);
|
|
break;
|
|
case RPORT_EV_LOGO:
|
|
case RPORT_EV_FAILED:
|
|
case RPORT_EV_STOP:
|
|
port_id = rdata->ids.port_id;
|
|
if (port_id == FC_FID_DIR_SERV)
|
|
break;
|
|
|
|
if (!rport) {
|
|
printk(KERN_INFO PFX "%x - rport not created Yet!!\n",
|
|
port_id);
|
|
break;
|
|
}
|
|
rp = rport->dd_data;
|
|
mutex_lock(&hba->hba_mutex);
|
|
/*
|
|
* Perform session upload. Note that rdata->peers is already
|
|
* removed from disc->rports list before we get this event.
|
|
*/
|
|
tgt = (struct bnx2fc_rport *)&rp[1];
|
|
|
|
if (!(test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags))) {
|
|
mutex_unlock(&hba->hba_mutex);
|
|
break;
|
|
}
|
|
clear_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags);
|
|
|
|
bnx2fc_upload_session(port, tgt);
|
|
hba->num_ofld_sess--;
|
|
BNX2FC_TGT_DBG(tgt, "UPLOAD num_ofld_sess = %d\n",
|
|
hba->num_ofld_sess);
|
|
/*
|
|
* Try to wake up the linkdown wait thread. If num_ofld_sess
|
|
* is 0, the waiting therad wakes up
|
|
*/
|
|
if ((hba->wait_for_link_down) &&
|
|
(hba->num_ofld_sess == 0)) {
|
|
wake_up_interruptible(&hba->shutdown_wait);
|
|
}
|
|
mutex_unlock(&hba->hba_mutex);
|
|
|
|
break;
|
|
|
|
case RPORT_EV_NONE:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* bnx2fc_tgt_lookup() - Lookup a bnx2fc_rport by port_id
|
|
*
|
|
* @port: fcoe_port struct to lookup the target port on
|
|
* @port_id: The remote port ID to look up
|
|
*/
|
|
struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
|
|
u32 port_id)
|
|
{
|
|
struct bnx2fc_interface *interface = port->priv;
|
|
struct bnx2fc_hba *hba = interface->hba;
|
|
struct bnx2fc_rport *tgt;
|
|
struct fc_rport_priv *rdata;
|
|
int i;
|
|
|
|
for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
|
|
tgt = hba->tgt_ofld_list[i];
|
|
if ((tgt) && (tgt->port == port)) {
|
|
rdata = tgt->rdata;
|
|
if (rdata->ids.port_id == port_id) {
|
|
if (rdata->rp_state != RPORT_ST_DELETE) {
|
|
BNX2FC_TGT_DBG(tgt, "rport "
|
|
"obtained\n");
|
|
return tgt;
|
|
} else {
|
|
BNX2FC_TGT_DBG(tgt, "rport 0x%x "
|
|
"is in DELETED state\n",
|
|
rdata->ids.port_id);
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2fc_alloc_conn_id - allocates FCOE Connection id
|
|
*
|
|
* @hba: pointer to adapter structure
|
|
* @tgt: pointer to bnx2fc_rport structure
|
|
*/
|
|
static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
|
|
struct bnx2fc_rport *tgt)
|
|
{
|
|
u32 conn_id, next;
|
|
|
|
/* called with hba mutex held */
|
|
|
|
/*
|
|
* tgt_ofld_list access is synchronized using
|
|
* both hba mutex and hba lock. Atleast hba mutex or
|
|
* hba lock needs to be held for read access.
|
|
*/
|
|
|
|
spin_lock_bh(&hba->hba_lock);
|
|
next = hba->next_conn_id;
|
|
conn_id = hba->next_conn_id++;
|
|
if (hba->next_conn_id == BNX2FC_NUM_MAX_SESS)
|
|
hba->next_conn_id = 0;
|
|
|
|
while (hba->tgt_ofld_list[conn_id] != NULL) {
|
|
conn_id++;
|
|
if (conn_id == BNX2FC_NUM_MAX_SESS)
|
|
conn_id = 0;
|
|
|
|
if (conn_id == next) {
|
|
/* No free conn_ids are available */
|
|
spin_unlock_bh(&hba->hba_lock);
|
|
return -1;
|
|
}
|
|
}
|
|
hba->tgt_ofld_list[conn_id] = tgt;
|
|
tgt->fcoe_conn_id = conn_id;
|
|
spin_unlock_bh(&hba->hba_lock);
|
|
return conn_id;
|
|
}
|
|
|
|
static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id)
|
|
{
|
|
/* called with hba mutex held */
|
|
spin_lock_bh(&hba->hba_lock);
|
|
hba->tgt_ofld_list[conn_id] = NULL;
|
|
spin_unlock_bh(&hba->hba_lock);
|
|
}
|
|
|
|
/**
|
|
*bnx2fc_alloc_session_resc - Allocate qp resources for the session
|
|
*
|
|
*/
|
|
static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
|
|
struct bnx2fc_rport *tgt)
|
|
{
|
|
dma_addr_t page;
|
|
int num_pages;
|
|
u32 *pbl;
|
|
|
|
/* Allocate and map SQ */
|
|
tgt->sq_mem_size = tgt->max_sqes * BNX2FC_SQ_WQE_SIZE;
|
|
tgt->sq_mem_size = (tgt->sq_mem_size + (CNIC_PAGE_SIZE - 1)) &
|
|
CNIC_PAGE_MASK;
|
|
|
|
tgt->sq = dma_alloc_coherent(&hba->pcidev->dev, tgt->sq_mem_size,
|
|
&tgt->sq_dma, GFP_KERNEL);
|
|
if (!tgt->sq) {
|
|
printk(KERN_ERR PFX "unable to allocate SQ memory %d\n",
|
|
tgt->sq_mem_size);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
/* Allocate and map CQ */
|
|
tgt->cq_mem_size = tgt->max_cqes * BNX2FC_CQ_WQE_SIZE;
|
|
tgt->cq_mem_size = (tgt->cq_mem_size + (CNIC_PAGE_SIZE - 1)) &
|
|
CNIC_PAGE_MASK;
|
|
|
|
tgt->cq = dma_alloc_coherent(&hba->pcidev->dev, tgt->cq_mem_size,
|
|
&tgt->cq_dma, GFP_KERNEL);
|
|
if (!tgt->cq) {
|
|
printk(KERN_ERR PFX "unable to allocate CQ memory %d\n",
|
|
tgt->cq_mem_size);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
/* Allocate and map RQ and RQ PBL */
|
|
tgt->rq_mem_size = tgt->max_rqes * BNX2FC_RQ_WQE_SIZE;
|
|
tgt->rq_mem_size = (tgt->rq_mem_size + (CNIC_PAGE_SIZE - 1)) &
|
|
CNIC_PAGE_MASK;
|
|
|
|
tgt->rq = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_mem_size,
|
|
&tgt->rq_dma, GFP_KERNEL);
|
|
if (!tgt->rq) {
|
|
printk(KERN_ERR PFX "unable to allocate RQ memory %d\n",
|
|
tgt->rq_mem_size);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
tgt->rq_pbl_size = (tgt->rq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *);
|
|
tgt->rq_pbl_size = (tgt->rq_pbl_size + (CNIC_PAGE_SIZE - 1)) &
|
|
CNIC_PAGE_MASK;
|
|
|
|
tgt->rq_pbl = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_pbl_size,
|
|
&tgt->rq_pbl_dma, GFP_KERNEL);
|
|
if (!tgt->rq_pbl) {
|
|
printk(KERN_ERR PFX "unable to allocate RQ PBL %d\n",
|
|
tgt->rq_pbl_size);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
num_pages = tgt->rq_mem_size / CNIC_PAGE_SIZE;
|
|
page = tgt->rq_dma;
|
|
pbl = (u32 *)tgt->rq_pbl;
|
|
|
|
while (num_pages--) {
|
|
*pbl = (u32)page;
|
|
pbl++;
|
|
*pbl = (u32)((u64)page >> 32);
|
|
pbl++;
|
|
page += CNIC_PAGE_SIZE;
|
|
}
|
|
|
|
/* Allocate and map XFERQ */
|
|
tgt->xferq_mem_size = tgt->max_sqes * BNX2FC_XFERQ_WQE_SIZE;
|
|
tgt->xferq_mem_size = (tgt->xferq_mem_size + (CNIC_PAGE_SIZE - 1)) &
|
|
CNIC_PAGE_MASK;
|
|
|
|
tgt->xferq = dma_alloc_coherent(&hba->pcidev->dev,
|
|
tgt->xferq_mem_size, &tgt->xferq_dma,
|
|
GFP_KERNEL);
|
|
if (!tgt->xferq) {
|
|
printk(KERN_ERR PFX "unable to allocate XFERQ %d\n",
|
|
tgt->xferq_mem_size);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
/* Allocate and map CONFQ & CONFQ PBL */
|
|
tgt->confq_mem_size = tgt->max_sqes * BNX2FC_CONFQ_WQE_SIZE;
|
|
tgt->confq_mem_size = (tgt->confq_mem_size + (CNIC_PAGE_SIZE - 1)) &
|
|
CNIC_PAGE_MASK;
|
|
|
|
tgt->confq = dma_alloc_coherent(&hba->pcidev->dev,
|
|
tgt->confq_mem_size, &tgt->confq_dma,
|
|
GFP_KERNEL);
|
|
if (!tgt->confq) {
|
|
printk(KERN_ERR PFX "unable to allocate CONFQ %d\n",
|
|
tgt->confq_mem_size);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
tgt->confq_pbl_size =
|
|
(tgt->confq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *);
|
|
tgt->confq_pbl_size =
|
|
(tgt->confq_pbl_size + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK;
|
|
|
|
tgt->confq_pbl = dma_alloc_coherent(&hba->pcidev->dev,
|
|
tgt->confq_pbl_size,
|
|
&tgt->confq_pbl_dma, GFP_KERNEL);
|
|
if (!tgt->confq_pbl) {
|
|
printk(KERN_ERR PFX "unable to allocate CONFQ PBL %d\n",
|
|
tgt->confq_pbl_size);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
num_pages = tgt->confq_mem_size / CNIC_PAGE_SIZE;
|
|
page = tgt->confq_dma;
|
|
pbl = (u32 *)tgt->confq_pbl;
|
|
|
|
while (num_pages--) {
|
|
*pbl = (u32)page;
|
|
pbl++;
|
|
*pbl = (u32)((u64)page >> 32);
|
|
pbl++;
|
|
page += CNIC_PAGE_SIZE;
|
|
}
|
|
|
|
/* Allocate and map ConnDB */
|
|
tgt->conn_db_mem_size = sizeof(struct fcoe_conn_db);
|
|
|
|
tgt->conn_db = dma_alloc_coherent(&hba->pcidev->dev,
|
|
tgt->conn_db_mem_size,
|
|
&tgt->conn_db_dma, GFP_KERNEL);
|
|
if (!tgt->conn_db) {
|
|
printk(KERN_ERR PFX "unable to allocate conn_db %d\n",
|
|
tgt->conn_db_mem_size);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
|
|
/* Allocate and map LCQ */
|
|
tgt->lcq_mem_size = (tgt->max_sqes + 8) * BNX2FC_SQ_WQE_SIZE;
|
|
tgt->lcq_mem_size = (tgt->lcq_mem_size + (CNIC_PAGE_SIZE - 1)) &
|
|
CNIC_PAGE_MASK;
|
|
|
|
tgt->lcq = dma_alloc_coherent(&hba->pcidev->dev, tgt->lcq_mem_size,
|
|
&tgt->lcq_dma, GFP_KERNEL);
|
|
|
|
if (!tgt->lcq) {
|
|
printk(KERN_ERR PFX "unable to allocate lcq %d\n",
|
|
tgt->lcq_mem_size);
|
|
goto mem_alloc_failure;
|
|
}
|
|
|
|
tgt->conn_db->rq_prod = 0x8000;
|
|
|
|
return 0;
|
|
|
|
mem_alloc_failure:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_free_session_resc - free qp resources for the session
|
|
*
|
|
* @hba: adapter structure pointer
|
|
* @tgt: bnx2fc_rport structure pointer
|
|
*
|
|
* Free QP resources - SQ/RQ/CQ/XFERQ memory and PBL
|
|
*/
|
|
static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
|
|
struct bnx2fc_rport *tgt)
|
|
{
|
|
void __iomem *ctx_base_ptr;
|
|
|
|
BNX2FC_TGT_DBG(tgt, "Freeing up session resources\n");
|
|
|
|
spin_lock_bh(&tgt->cq_lock);
|
|
ctx_base_ptr = tgt->ctx_base;
|
|
tgt->ctx_base = NULL;
|
|
|
|
/* Free LCQ */
|
|
if (tgt->lcq) {
|
|
dma_free_coherent(&hba->pcidev->dev, tgt->lcq_mem_size,
|
|
tgt->lcq, tgt->lcq_dma);
|
|
tgt->lcq = NULL;
|
|
}
|
|
/* Free connDB */
|
|
if (tgt->conn_db) {
|
|
dma_free_coherent(&hba->pcidev->dev, tgt->conn_db_mem_size,
|
|
tgt->conn_db, tgt->conn_db_dma);
|
|
tgt->conn_db = NULL;
|
|
}
|
|
/* Free confq and confq pbl */
|
|
if (tgt->confq_pbl) {
|
|
dma_free_coherent(&hba->pcidev->dev, tgt->confq_pbl_size,
|
|
tgt->confq_pbl, tgt->confq_pbl_dma);
|
|
tgt->confq_pbl = NULL;
|
|
}
|
|
if (tgt->confq) {
|
|
dma_free_coherent(&hba->pcidev->dev, tgt->confq_mem_size,
|
|
tgt->confq, tgt->confq_dma);
|
|
tgt->confq = NULL;
|
|
}
|
|
/* Free XFERQ */
|
|
if (tgt->xferq) {
|
|
dma_free_coherent(&hba->pcidev->dev, tgt->xferq_mem_size,
|
|
tgt->xferq, tgt->xferq_dma);
|
|
tgt->xferq = NULL;
|
|
}
|
|
/* Free RQ PBL and RQ */
|
|
if (tgt->rq_pbl) {
|
|
dma_free_coherent(&hba->pcidev->dev, tgt->rq_pbl_size,
|
|
tgt->rq_pbl, tgt->rq_pbl_dma);
|
|
tgt->rq_pbl = NULL;
|
|
}
|
|
if (tgt->rq) {
|
|
dma_free_coherent(&hba->pcidev->dev, tgt->rq_mem_size,
|
|
tgt->rq, tgt->rq_dma);
|
|
tgt->rq = NULL;
|
|
}
|
|
/* Free CQ */
|
|
if (tgt->cq) {
|
|
dma_free_coherent(&hba->pcidev->dev, tgt->cq_mem_size,
|
|
tgt->cq, tgt->cq_dma);
|
|
tgt->cq = NULL;
|
|
}
|
|
/* Free SQ */
|
|
if (tgt->sq) {
|
|
dma_free_coherent(&hba->pcidev->dev, tgt->sq_mem_size,
|
|
tgt->sq, tgt->sq_dma);
|
|
tgt->sq = NULL;
|
|
}
|
|
spin_unlock_bh(&tgt->cq_lock);
|
|
|
|
if (ctx_base_ptr)
|
|
iounmap(ctx_base_ptr);
|
|
}
|