| /* bnx2fc_tgt.c: QLogic Linux FCoE offload driver. |
| * Handles operations such as session offload/upload etc, and manages |
| * session resources such as connection id and qp resources. |
| * |
| * Copyright (c) 2008-2013 Broadcom Corporation |
| * Copyright (c) 2014-2016 QLogic Corporation |
| * Copyright (c) 2016-2017 Cavium Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation. |
| * |
| * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com) |
| */ |
| |
| #include "bnx2fc.h" |
| static void bnx2fc_upld_timer(struct timer_list *t); |
| static void bnx2fc_ofld_timer(struct timer_list *t); |
| static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt, |
| struct fcoe_port *port, |
| struct fc_rport_priv *rdata); |
| static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba, |
| struct bnx2fc_rport *tgt); |
| static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba, |
| struct bnx2fc_rport *tgt); |
| static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba, |
| struct bnx2fc_rport *tgt); |
| static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id); |
| |
| static void bnx2fc_upld_timer(struct timer_list *t) |
| { |
| |
| struct bnx2fc_rport *tgt = from_timer(tgt, t, upld_timer); |
| |
| BNX2FC_TGT_DBG(tgt, "upld_timer - Upload compl not received!!\n"); |
| /* fake upload completion */ |
| clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags); |
| clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags); |
| set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags); |
| wake_up_interruptible(&tgt->upld_wait); |
| } |
| |
| static void bnx2fc_ofld_timer(struct timer_list *t) |
| { |
| |
| struct bnx2fc_rport *tgt = from_timer(tgt, t, ofld_timer); |
| |
| BNX2FC_TGT_DBG(tgt, "entered bnx2fc_ofld_timer\n"); |
| /* NOTE: This function should never be called, as |
| * offload should never timeout |
| */ |
| /* |
| * If the timer has expired, this session is dead |
| * Clear offloaded flag and logout of this device. |
| * Since OFFLOADED flag is cleared, this case |
| * will be considered as offload error and the |
| * port will be logged off, and conn_id, session |
| * resources are freed up in bnx2fc_offload_session |
| */ |
| clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags); |
| clear_bit(BNX2FC_FLAG_ENABLED, &tgt->flags); |
| set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags); |
| wake_up_interruptible(&tgt->ofld_wait); |
| } |
| |
| static void bnx2fc_ofld_wait(struct bnx2fc_rport *tgt) |
| { |
| timer_setup(&tgt->ofld_timer, bnx2fc_ofld_timer, 0); |
| mod_timer(&tgt->ofld_timer, jiffies + BNX2FC_FW_TIMEOUT); |
| |
| wait_event_interruptible(tgt->ofld_wait, |
| (test_bit( |
| BNX2FC_FLAG_OFLD_REQ_CMPL, |
| &tgt->flags))); |
| if (signal_pending(current)) |
| flush_signals(current); |
| del_timer_sync(&tgt->ofld_timer); |
| } |
| |
| static void bnx2fc_offload_session(struct fcoe_port *port, |
| struct bnx2fc_rport *tgt, |
| struct fc_rport_priv *rdata) |
| { |
| struct fc_rport *rport = rdata->rport; |
| struct bnx2fc_interface *interface = port->priv; |
| struct bnx2fc_hba *hba = interface->hba; |
| int rval; |
| int i = 0; |
| |
| /* Initialize bnx2fc_rport */ |
| /* NOTE: tgt is already bzero'd */ |
| rval = bnx2fc_init_tgt(tgt, port, rdata); |
| if (rval) { |
| printk(KERN_ERR PFX "Failed to allocate conn id for " |
| "port_id (%6x)\n", rport->port_id); |
| goto tgt_init_err; |
| } |
| |
| /* Allocate session resources */ |
| rval = bnx2fc_alloc_session_resc(hba, tgt); |
| if (rval) { |
| printk(KERN_ERR PFX "Failed to allocate resources\n"); |
| goto ofld_err; |
| } |
| |
| /* |
| * Initialize FCoE session offload process. |
| * Upon completion of offload process add |
| * rport to list of rports |
| */ |
| retry_ofld: |
| clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags); |
| rval = bnx2fc_send_session_ofld_req(port, tgt); |
| if (rval) { |
| printk(KERN_ERR PFX "ofld_req failed\n"); |
| goto ofld_err; |
| } |
| |
| /* |
| * wait for the session is offloaded and enabled. 3 Secs |
| * should be ample time for this process to complete. |
| */ |
| bnx2fc_ofld_wait(tgt); |
| |
| if (!(test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags))) { |
| if (test_and_clear_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, |
| &tgt->flags)) { |
| BNX2FC_TGT_DBG(tgt, "ctx_alloc_failure, " |
| "retry ofld..%d\n", i++); |
| msleep_interruptible(1000); |
| if (i > 3) { |
| i = 0; |
| goto ofld_err; |
| } |
| goto retry_ofld; |
| } |
| goto ofld_err; |
| } |
| if (bnx2fc_map_doorbell(tgt)) { |
| printk(KERN_ERR PFX "map doorbell failed - no mem\n"); |
| goto ofld_err; |
| } |
| clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags); |
| rval = bnx2fc_send_session_enable_req(port, tgt); |
| if (rval) { |
| pr_err(PFX "enable session failed\n"); |
| goto ofld_err; |
| } |
| bnx2fc_ofld_wait(tgt); |
| if (!(test_bit(BNX2FC_FLAG_ENABLED, &tgt->flags))) |
| goto ofld_err; |
| return; |
| |
| ofld_err: |
| /* couldn't offload the session. log off from this rport */ |
| BNX2FC_TGT_DBG(tgt, "bnx2fc_offload_session - offload error\n"); |
| clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags); |
| /* Free session resources */ |
| bnx2fc_free_session_resc(hba, tgt); |
| tgt_init_err: |
| if (tgt->fcoe_conn_id != -1) |
| bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id); |
| fc_rport_logoff(rdata); |
| } |
| |
| void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt) |
| { |
| struct bnx2fc_cmd *io_req; |
| struct bnx2fc_cmd *tmp; |
| int rc; |
| int i = 0; |
| BNX2FC_TGT_DBG(tgt, "Entered flush_active_ios - %d\n", |
| tgt->num_active_ios.counter); |
| |
| spin_lock_bh(&tgt->tgt_lock); |
| tgt->flush_in_prog = 1; |
| |
| list_for_each_entry_safe(io_req, tmp, &tgt->active_cmd_queue, link) { |
| i++; |
| list_del_init(&io_req->link); |
| io_req->on_active_queue = 0; |
| BNX2FC_IO_DBG(io_req, "cmd_queue cleanup\n"); |
| |
| if (cancel_delayed_work(&io_req->timeout_work)) { |
| if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT, |
| &io_req->req_flags)) { |
| /* Handle eh_abort timeout */ |
| BNX2FC_IO_DBG(io_req, "eh_abort for IO " |
| "cleaned up\n"); |
| complete(&io_req->tm_done); |
| } |
| kref_put(&io_req->refcount, |
| bnx2fc_cmd_release); /* drop timer hold */ |
| } |
| |
| set_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags); |
| set_bit(BNX2FC_FLAG_IO_CLEANUP, &io_req->req_flags); |
| |
| /* Do not issue cleanup when disable request failed */ |
| if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) |
| bnx2fc_process_cleanup_compl(io_req, io_req->task, 0); |
| else { |
| rc = bnx2fc_initiate_cleanup(io_req); |
| BUG_ON(rc); |
| } |
| } |
| |
| list_for_each_entry_safe(io_req, tmp, &tgt->active_tm_queue, link) { |
| i++; |
| list_del_init(&io_req->link); |
| io_req->on_tmf_queue = 0; |
| BNX2FC_IO_DBG(io_req, "tm_queue cleanup\n"); |
| if (io_req->wait_for_comp) |
| complete(&io_req->tm_done); |
| } |
| |
| list_for_each_entry_safe(io_req, tmp, &tgt->els_queue, link) { |
| i++; |
| list_del_init(&io_req->link); |
| io_req->on_active_queue = 0; |
| |
| BNX2FC_IO_DBG(io_req, "els_queue cleanup\n"); |
| |
| if (cancel_delayed_work(&io_req->timeout_work)) |
| kref_put(&io_req->refcount, |
| bnx2fc_cmd_release); /* drop timer hold */ |
| |
| if ((io_req->cb_func) && (io_req->cb_arg)) { |
| io_req->cb_func(io_req->cb_arg); |
| io_req->cb_arg = NULL; |
| } |
| |
| /* Do not issue cleanup when disable request failed */ |
| if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) |
| bnx2fc_process_cleanup_compl(io_req, io_req->task, 0); |
| else { |
| rc = bnx2fc_initiate_cleanup(io_req); |
| BUG_ON(rc); |
| } |
| } |
| |
| list_for_each_entry_safe(io_req, tmp, &tgt->io_retire_queue, link) { |
| i++; |
| list_del_init(&io_req->link); |
| |
| BNX2FC_IO_DBG(io_req, "retire_queue flush\n"); |
| |
| if (cancel_delayed_work(&io_req->timeout_work)) { |
| if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT, |
| &io_req->req_flags)) { |
| /* Handle eh_abort timeout */ |
| BNX2FC_IO_DBG(io_req, "eh_abort for IO " |
| "in retire_q\n"); |
| if (io_req->wait_for_comp) |
| complete(&io_req->tm_done); |
| } |
| kref_put(&io_req->refcount, bnx2fc_cmd_release); |
| } |
| |
| clear_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags); |
| } |
| |
| BNX2FC_TGT_DBG(tgt, "IOs flushed = %d\n", i); |
| i = 0; |
| spin_unlock_bh(&tgt->tgt_lock); |
| /* wait for active_ios to go to 0 */ |
| while ((tgt->num_active_ios.counter != 0) && (i++ < BNX2FC_WAIT_CNT)) |
| msleep(25); |
| if (tgt->num_active_ios.counter != 0) |
| printk(KERN_ERR PFX "CLEANUP on port 0x%x:" |
| " active_ios = %d\n", |
| tgt->rdata->ids.port_id, tgt->num_active_ios.counter); |
| spin_lock_bh(&tgt->tgt_lock); |
| tgt->flush_in_prog = 0; |
| spin_unlock_bh(&tgt->tgt_lock); |
| } |
| |
| static void bnx2fc_upld_wait(struct bnx2fc_rport *tgt) |
| { |
| timer_setup(&tgt->upld_timer, bnx2fc_upld_timer, 0); |
| mod_timer(&tgt->upld_timer, jiffies + BNX2FC_FW_TIMEOUT); |
| wait_event_interruptible(tgt->upld_wait, |
| (test_bit( |
| BNX2FC_FLAG_UPLD_REQ_COMPL, |
| &tgt->flags))); |
| if (signal_pending(current)) |
| flush_signals(current); |
| del_timer_sync(&tgt->upld_timer); |
| } |
| |
| static void bnx2fc_upload_session(struct fcoe_port *port, |
| struct bnx2fc_rport *tgt) |
| { |
| struct bnx2fc_interface *interface = port->priv; |
| struct bnx2fc_hba *hba = interface->hba; |
| |
| BNX2FC_TGT_DBG(tgt, "upload_session: active_ios = %d\n", |
| tgt->num_active_ios.counter); |
| |
| /* |
| * Called with hba->hba_mutex held. |
| * This is a blocking call |
| */ |
| clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags); |
| bnx2fc_send_session_disable_req(port, tgt); |
| |
| /* |
| * wait for upload to complete. 3 Secs |
| * should be sufficient time for this process to complete. |
| */ |
| BNX2FC_TGT_DBG(tgt, "waiting for disable compl\n"); |
| bnx2fc_upld_wait(tgt); |
| |
| /* |
| * traverse thru the active_q and tmf_q and cleanup |
| * IOs in these lists |
| */ |
| BNX2FC_TGT_DBG(tgt, "flush/upload - disable wait flags = 0x%lx\n", |
| tgt->flags); |
| bnx2fc_flush_active_ios(tgt); |
| |
| /* Issue destroy KWQE */ |
| if (test_bit(BNX2FC_FLAG_DISABLED, &tgt->flags)) { |
| BNX2FC_TGT_DBG(tgt, "send destroy req\n"); |
| clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags); |
| bnx2fc_send_session_destroy_req(hba, tgt); |
| |
| /* wait for destroy to complete */ |
| bnx2fc_upld_wait(tgt); |
| |
| if (!(test_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags))) |
| printk(KERN_ERR PFX "ERROR!! destroy timed out\n"); |
| |
| BNX2FC_TGT_DBG(tgt, "destroy wait complete flags = 0x%lx\n", |
| tgt->flags); |
| |
| } else if (test_bit(BNX2FC_FLAG_DISABLE_FAILED, &tgt->flags)) { |
| printk(KERN_ERR PFX "ERROR!! DISABLE req failed, destroy" |
| " not sent to FW\n"); |
| } else { |
| printk(KERN_ERR PFX "ERROR!! DISABLE req timed out, destroy" |
| " not sent to FW\n"); |
| } |
| |
| /* Free session resources */ |
| bnx2fc_free_session_resc(hba, tgt); |
| bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id); |
| } |
| |
| static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt, |
| struct fcoe_port *port, |
| struct fc_rport_priv *rdata) |
| { |
| |
| struct fc_rport *rport = rdata->rport; |
| struct bnx2fc_interface *interface = port->priv; |
| struct bnx2fc_hba *hba = interface->hba; |
| struct b577xx_doorbell_set_prod *sq_db = &tgt->sq_db; |
| struct b577xx_fcoe_rx_doorbell *rx_db = &tgt->rx_db; |
| |
| tgt->rport = rport; |
| tgt->rdata = rdata; |
| tgt->port = port; |
| |
| if (hba->num_ofld_sess >= BNX2FC_NUM_MAX_SESS) { |
| BNX2FC_TGT_DBG(tgt, "exceeded max sessions. logoff this tgt\n"); |
| tgt->fcoe_conn_id = -1; |
| return -1; |
| } |
| |
| tgt->fcoe_conn_id = bnx2fc_alloc_conn_id(hba, tgt); |
| if (tgt->fcoe_conn_id == -1) |
| return -1; |
| |
| BNX2FC_TGT_DBG(tgt, "init_tgt - conn_id = 0x%x\n", tgt->fcoe_conn_id); |
| |
| tgt->max_sqes = BNX2FC_SQ_WQES_MAX; |
| tgt->max_rqes = BNX2FC_RQ_WQES_MAX; |
| tgt->max_cqes = BNX2FC_CQ_WQES_MAX; |
| atomic_set(&tgt->free_sqes, BNX2FC_SQ_WQES_MAX); |
| |
| /* Initialize the toggle bit */ |
| tgt->sq_curr_toggle_bit = 1; |
| tgt->cq_curr_toggle_bit = 1; |
| tgt->sq_prod_idx = 0; |
| tgt->cq_cons_idx = 0; |
| tgt->rq_prod_idx = 0x8000; |
| tgt->rq_cons_idx = 0; |
| atomic_set(&tgt->num_active_ios, 0); |
| tgt->retry_delay_timestamp = 0; |
| |
| if (rdata->flags & FC_RP_FLAGS_RETRY && |
| rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && |
| !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { |
| tgt->dev_type = TYPE_TAPE; |
| tgt->io_timeout = 0; /* use default ULP timeout */ |
| } else { |
| tgt->dev_type = TYPE_DISK; |
| tgt->io_timeout = BNX2FC_IO_TIMEOUT; |
| } |
| |
| /* initialize sq doorbell */ |
| sq_db->header.header = B577XX_DOORBELL_HDR_DB_TYPE; |
| sq_db->header.header |= B577XX_FCOE_CONNECTION_TYPE << |
| B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT; |
| /* initialize rx doorbell */ |
| rx_db->hdr.header = ((0x1 << B577XX_DOORBELL_HDR_RX_SHIFT) | |
| (0x1 << B577XX_DOORBELL_HDR_DB_TYPE_SHIFT) | |
| (B577XX_FCOE_CONNECTION_TYPE << |
| B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT)); |
| rx_db->params = (0x2 << B577XX_FCOE_RX_DOORBELL_NEGATIVE_ARM_SHIFT) | |
| (0x3 << B577XX_FCOE_RX_DOORBELL_OPCODE_SHIFT); |
| |
| spin_lock_init(&tgt->tgt_lock); |
| spin_lock_init(&tgt->cq_lock); |
| |
| /* Initialize active_cmd_queue list */ |
| INIT_LIST_HEAD(&tgt->active_cmd_queue); |
| |
| /* Initialize IO retire queue */ |
| INIT_LIST_HEAD(&tgt->io_retire_queue); |
| |
| INIT_LIST_HEAD(&tgt->els_queue); |
| |
| /* 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_zalloc_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_zalloc_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_zalloc_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_zalloc_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_zalloc_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_zalloc_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_zalloc_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_zalloc_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_zalloc_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); |
| } |