From patchwork Thu Jan 7 00:50:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: James Smart X-Patchwork-Id: 358621 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DB69C4332E for ; Thu, 7 Jan 2021 00:52:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0550923118 for ; Thu, 7 Jan 2021 00:52:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726504AbhAGAv7 (ORCPT ); Wed, 6 Jan 2021 19:51:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726477AbhAGAv6 (ORCPT ); Wed, 6 Jan 2021 19:51:58 -0500 Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 91ADBC0612EF for ; Wed, 6 Jan 2021 16:50:44 -0800 (PST) Received: by mail-pj1-x1029.google.com with SMTP id l23so2593547pjg.1 for ; Wed, 06 Jan 2021 16:50:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=8JEG6+n+BeLLwnBA6bPY15DVa+Dgy5qktator0P/4IE=; b=hcFLOWpjdMKhs55Fb3lkY8QIeL3lregE3ERnV49BTJ3QLl2V0/AyZLCoLunC7ZE+/j hWlMTk9bBFwG97ftX+30fPfnwsXNoFrXQS/xneMD7IIQJTDlV2jkC0fNMXAngCfz2wC4 vntCoaEdu6p+YLH4MHU9YWWvvDb6kHxKE3pzZlREyoQnELBPSaCxFaz1nGYS2TUP/suu RY0pD0fxYuAWDhMeFlxFz7adrsGaY0aXLfdVMIj3gbiTINOrRVk8Ei5vbwe48/xpXOcw 4h2HbL6wBiyk9RROUw6XC0/YkFuXM/YjzQ25zpY8re59nFqa1EhcwIjZ7O+KiVLJGnRy oLEw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=8JEG6+n+BeLLwnBA6bPY15DVa+Dgy5qktator0P/4IE=; b=fHDKdcns/uK48nrgyHkGgsPs/1pVmelSgGYbkih/VEVNh9Ebv7tNSPb8U+aHAILx7y uxGjX8+0iW+DPnfUfRHuvsZGBs0OeVAJci8of9eHyUlki/smcxsg9fAJLb34r/NZskqC qUZYN4vhEsi3nlHSK8/K3hsAroRRNnC7SWBX+8oWDG7E9YnrQGO1GLRJXLAmQPE865kG vGMatfhwRKxHephyoB6SzyFqov+LIZm4URJ5oIY8U3oKfywppDRYBJ8Dauzey+c158JD h4lSbWmzmdHspzv9dX8sChTo5cK+VdeMZP8sCxyMvQ9ym3QtO52g3hnmFJxtCBByk49b MN3Q== X-Gm-Message-State: AOAM531IAnxfd9WE5zMfce/ULtc93TzSoR2kNSDrRrWUGwGUa4hS0qS/ Y8lh7TW7PFCotDXabmVAcJPGXIhXOB0e4w== X-Google-Smtp-Source: ABdhPJzUSJjiWDXRYB1972D7Pk+Z8Nv6NgrwQBHjgvoNBL5lIzutHc6+s0/gCIXyFPLOPH1jlLeduA== X-Received: by 2002:a17:90b:1087:: with SMTP id gj7mr6637081pjb.41.1609980643005; Wed, 06 Jan 2021 16:50:43 -0800 (PST) Received: from localhost.localdomain ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id w27sm3600634pfq.104.2021.01.06.16.50.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Jan 2021 16:50:42 -0800 (PST) From: James Smart To: linux-scsi@vger.kernel.org Cc: James Smart , Ram Vegesna , Daniel Wagner Subject: [PATCH v6 09/31] elx: libefc: Emulex FC discovery library APIs and definitions Date: Wed, 6 Jan 2021 16:50:08 -0800 Message-Id: <20210107005030.2929-10-jsmart2021@gmail.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210107005030.2929-1-jsmart2021@gmail.com> References: <20210107005030.2929-1-jsmart2021@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org This patch continues the libefc library population. This patch adds library interface definitions for: - SLI/Local FC port objects - efc_domain_s: FC domain (aka fabric) objects - efc_node_s: FC node (aka remote ports) objects Co-developed-by: Ram Vegesna Signed-off-by: Ram Vegesna Signed-off-by: James Smart Reviewed-by: Daniel Wagner --- v6: Slight update to node_sm_trace macro convert prototype for efc_nport_cb() from int to void moved libefc/efc_lib.c to libefc/efclib.c v5: Added Mempool for ELS ios. Remove EFC_HW_NODE_XXX and EFC_HW_NPORT_XXX events. Use EFC_EVT_XXX events directly for port and node callbacks. --- drivers/scsi/elx/libefc/efc.h | 69 ++++ drivers/scsi/elx/libefc/efclib.c | 81 +++++ drivers/scsi/elx/libefc/efclib.h | 601 +++++++++++++++++++++++++++++++ 3 files changed, 751 insertions(+) create mode 100644 drivers/scsi/elx/libefc/efc.h create mode 100644 drivers/scsi/elx/libefc/efclib.c create mode 100644 drivers/scsi/elx/libefc/efclib.h diff --git a/drivers/scsi/elx/libefc/efc.h b/drivers/scsi/elx/libefc/efc.h new file mode 100644 index 000000000000..19b98c2153f6 --- /dev/null +++ b/drivers/scsi/elx/libefc/efc.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2021 Broadcom. All Rights Reserved. The term + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. + */ + +#ifndef __EFC_H__ +#define __EFC_H__ + +#include "../include/efc_common.h" +#include "efclib.h" +#include "efc_sm.h" +#include "efc_cmds.h" +#include "efc_domain.h" +#include "efc_nport.h" +#include "efc_node.h" +#include "efc_fabric.h" +#include "efc_device.h" +#include "efc_els.h" + +#define EFC_MAX_REMOTE_NODES 2048 +#define NODE_SPARAMS_SIZE 256 + +enum efc_hw_rtn { + EFC_HW_RTN_SUCCESS = 0, + EFC_HW_RTN_SUCCESS_SYNC = 1, + EFC_HW_RTN_ERROR = -1, + EFC_HW_RTN_NO_RESOURCES = -2, + EFC_HW_RTN_NO_MEMORY = -3, + EFC_HW_RTN_IO_NOT_ACTIVE = -4, + EFC_HW_RTN_IO_ABORT_IN_PROGRESS = -5, + EFC_HW_RTN_IO_PORT_OWNED_ALREADY_ABORTED = -6, + EFC_HW_RTN_INVALID_ARG = -7, +}; + +#define EFC_HW_RTN_IS_ERROR(e) ((e) < 0) + +enum efc_scsi_del_initiator_reason { + EFC_SCSI_INITIATOR_DELETED, + EFC_SCSI_INITIATOR_MISSING, +}; + +enum efc_scsi_del_target_reason { + EFC_SCSI_TARGET_DELETED, + EFC_SCSI_TARGET_MISSING, +}; + +#define EFC_SCSI_CALL_COMPLETE 0 +#define EFC_SCSI_CALL_ASYNC 1 + +#define EFC_FC_ELS_DEFAULT_RETRIES 3 + +#define domain_sm_trace(domain) \ + efc_log_debug(domain->efc, "[domain:%s] %-20s %-20s\n", \ + domain->display_name, __func__, efc_sm_event_name(evt)) \ + +#define domain_trace(domain, fmt, ...) \ + efc_log_debug(domain->efc, \ + "[%s]" fmt, domain->display_name, ##__VA_ARGS__) \ + +#define node_sm_trace() \ + efc_log_debug(node->efc, "[%s] %-20s %-20s\n", \ + node->display_name, __func__, efc_sm_event_name(evt)) \ + +#define nport_sm_trace(nport) \ + efc_log_debug(nport->efc, \ + "[%s] %-20s\n", nport->display_name, efc_sm_event_name(evt)) \ + +#endif /* __EFC_H__ */ diff --git a/drivers/scsi/elx/libefc/efclib.c b/drivers/scsi/elx/libefc/efclib.c new file mode 100644 index 000000000000..786266a5aeaf --- /dev/null +++ b/drivers/scsi/elx/libefc/efclib.c @@ -0,0 +1,81 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2021 Broadcom. All Rights Reserved. The term + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. + */ + +/* + * LIBEFC LOCKING + * + * The critical sections protected by the efc's spinlock are quite broad and + * may be improved upon in the future. The libefc code and its locking doesn't + * influence the I/O path, so excessive locking doesn't impact I/O performance. + * + * The strategy is to lock whenever processing a request from user driver. This + * means that the entry points into the libefc library are protected by efc + * lock. So all the state machine transitions are protected. + */ + +#include +#include +#include "efc.h" + +int efcport_init(struct efc *efc) +{ + u32 rc = EFC_SUCCESS; + + spin_lock_init(&efc->lock); + INIT_LIST_HEAD(&efc->vport_list); + efc->hold_frames = false; + spin_lock_init(&efc->pend_frames_lock); + INIT_LIST_HEAD(&efc->pend_frames); + + /* Create Node pool */ + efc->node_pool = mempool_create_kmalloc_pool(EFC_MAX_REMOTE_NODES, + sizeof(struct efc_node)); + if (!efc->node_pool) { + efc_log_err(efc, "Can't allocate node pool\n"); + return EFC_FAIL; + } + + efc->node_dma_pool = dma_pool_create("node_dma_pool", &efc->pci->dev, + NODE_SPARAMS_SIZE, 0, 0); + if (!efc->node_dma_pool) { + efc_log_err(efc, "Can't allocate node dma pool\n"); + mempool_destroy(efc->node_pool); + return EFC_FAIL; + } + + efc->els_io_pool = mempool_create_kmalloc_pool(EFC_ELS_IO_POOL_SZ, + sizeof(struct efc_els_io_req)); + if (!efc->els_io_pool) { + efc_log_err(efc, "Can't allocate els io pool\n"); + return EFC_FAIL; + } + + return rc; +} + +static void +efc_purge_pending(struct efc *efc) +{ + struct efc_hw_sequence *frame, *next; + unsigned long flags = 0; + + spin_lock_irqsave(&efc->pend_frames_lock, flags); + + list_for_each_entry_safe(frame, next, &efc->pend_frames, list_entry) { + list_del(&frame->list_entry); + efc->tt.hw_seq_free(efc, frame); + } + + spin_unlock_irqrestore(&efc->pend_frames_lock, flags); +} + +void efcport_destroy(struct efc *efc) +{ + efc_purge_pending(efc); + mempool_destroy(efc->els_io_pool); + mempool_destroy(efc->node_pool); + dma_pool_destroy(efc->node_dma_pool); +} diff --git a/drivers/scsi/elx/libefc/efclib.h b/drivers/scsi/elx/libefc/efclib.h new file mode 100644 index 000000000000..5c40a91457d5 --- /dev/null +++ b/drivers/scsi/elx/libefc/efclib.h @@ -0,0 +1,601 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2021 Broadcom. All Rights Reserved. The term + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. + */ + +#ifndef __EFCLIB_H__ +#define __EFCLIB_H__ + +#include "scsi/fc/fc_els.h" +#include "scsi/fc/fc_fs.h" +#include "scsi/fc/fc_ns.h" +#include "scsi/fc/fc_gs.h" +#include "scsi/fc_frame.h" +#include "../include/efc_common.h" +#include "../libefc_sli/sli4.h" + +#define EFC_SERVICE_PARMS_LENGTH 120 +#define EFC_NAME_LENGTH 32 +#define EFC_SM_NAME_LENGTH 64 +#define EFC_DISPLAY_BUS_INFO_LENGTH 16 + +#define EFC_WWN_LENGTH 32 + +#define EFC_FC_ELS_DEFAULT_RETRIES 3 + +/* Timeouts */ +#define EFC_FC_ELS_SEND_DEFAULT_TIMEOUT 0 +#define EFC_FC_FLOGI_TIMEOUT_SEC 5 +#define EFC_SHUTDOWN_TIMEOUT_USEC 30000000 + +/* Local port topology */ +enum efc_nport_topology { + EFC_NPORT_TOPO_UNKNOWN = 0, + EFC_NPORT_TOPO_FABRIC, + EFC_NPORT_TOPO_P2P, + EFC_NPORT_TOPO_FC_AL, +}; + +#define enable_target_rscn(efc) 1 + +enum efc_node_shutd_rsn { + EFC_NODE_SHUTDOWN_DEFAULT = 0, + EFC_NODE_SHUTDOWN_EXPLICIT_LOGO, + EFC_NODE_SHUTDOWN_IMPLICIT_LOGO, +}; + +enum efc_node_send_ls_acc { + EFC_NODE_SEND_LS_ACC_NONE = 0, + EFC_NODE_SEND_LS_ACC_PLOGI, + EFC_NODE_SEND_LS_ACC_PRLI, +}; + +#define EFC_LINK_STATUS_UP 0 +#define EFC_LINK_STATUS_DOWN 1 + +/* State machine context header */ +struct efc_sm_ctx { + void (*current_state)(struct efc_sm_ctx *ctx, + u32 evt, void *arg); + + const char *description; + void *app; +}; + +/* Description of discovered Fabric Domain */ +struct efc_domain_record { + u32 index; + u32 priority; + u8 address[6]; + u8 wwn[8]; + union { + u8 vlan[512]; + u8 loop[128]; + } map; + u32 speed; + u32 fc_id; + bool is_loop; + bool is_nport; +}; + +/* Domain events */ +enum efc_hw_domain_event { + EFC_HW_DOMAIN_ALLOC_OK, + EFC_HW_DOMAIN_ALLOC_FAIL, + EFC_HW_DOMAIN_ATTACH_OK, + EFC_HW_DOMAIN_ATTACH_FAIL, + EFC_HW_DOMAIN_FREE_OK, + EFC_HW_DOMAIN_FREE_FAIL, + EFC_HW_DOMAIN_LOST, + EFC_HW_DOMAIN_FOUND, + EFC_HW_DOMAIN_CHANGED, +}; + +struct efc_nport { + struct list_head list_entry; + struct kref ref; + void (*release)(struct kref *arg); + struct efc *efc; + u32 tgt_id; + u32 index; + u32 instance_index; + char display_name[EFC_NAME_LENGTH]; + bool is_vport; + bool free_req_pending; + bool attached; + bool p2p_winner; + struct efc_domain *domain; + u64 wwpn; + u64 wwnn; + void *ini_nport; + void *tgt_nport; + void *tgt_data; + void *ini_data; + + /* Members private to HW/SLI */ + void *hw; + u32 indicator; + u32 fc_id; + struct efc_dma dma; + + u8 wwnn_str[EFC_WWN_LENGTH]; + __be64 sli_wwpn; + __be64 sli_wwnn; + + struct efc_sm_ctx sm; + struct xarray lookup; + bool enable_ini; + bool enable_tgt; + bool enable_rscn; + bool shutting_down; + u32 p2p_port_id; + enum efc_nport_topology topology; + u8 service_params[EFC_SERVICE_PARMS_LENGTH]; + u32 p2p_remote_port_id; +}; + +/** + * Fibre Channel domain object + * + * This object is a container for the various SLI components needed + * to connect to the domain of a FC or FCoE switch + * @efc: pointer back to efc + * @instance_index: unique instance index value + * @display_name: Node display name + * @nport_list: linked list of nports associated with this domain + * @ref: Reference count, each nport takes a reference + * @release: Function to free domain object + * @ini_domain: initiator backend private domain data + * @tgt_domain: target backend private domain data + * @hw: pointer to HW + * @sm: state machine context + * @fcf: FC Forwarder table index + * @fcf_indicator: FCFI + * @indicator: VFI + * @nport_count: Number of nports allocated + * @dma: memory for Service Parameters + * @fcf_wwn: WWN for FCF/switch + * @drvsm: driver domain sm context + * @attached: set true after attach completes + * @is_fc: is FC + * @is_loop: is loop topology + * @is_nlport: is public loop + * @domain_found_pending:A domain found is pending, drec is updated + * @req_domain_free: True if domain object should be free'd + * @req_accept_frames: set in domain state machine to enable frames + * @domain_notify_pend: Set in domain SM to avoid duplicate node event post + * @pending_drec: Pending drec if a domain found is pending + * @service_params: any nports service parameters + * @flogi_service_params:Fabric/P2p service parameters from FLOGI + * @lookup: d_id to node lookup object + * @nport: Pointer to first (physical) SLI port + */ +struct efc_domain { + struct efc *efc; + char display_name[EFC_NAME_LENGTH]; + struct list_head nport_list; + struct kref ref; + void (*release)(struct kref *arg); + void *ini_domain; + void *tgt_domain; + + /* Declarations private to HW/SLI */ + void *hw; + u32 fcf; + u32 fcf_indicator; + u32 indicator; + u32 nport_count; + struct efc_dma dma; + + /* Declarations private to FC trannport */ + u64 fcf_wwn; + struct efc_sm_ctx drvsm; + bool attached; + bool is_fc; + bool is_loop; + bool is_nlport; + bool domain_found_pending; + bool req_domain_free; + bool req_accept_frames; + bool domain_notify_pend; + + struct efc_domain_record pending_drec; + u8 service_params[EFC_SERVICE_PARMS_LENGTH]; + u8 flogi_service_params[EFC_SERVICE_PARMS_LENGTH]; + + struct xarray lookup; + + struct efc_nport *nport; +}; + +/** + * Remote Node object + * + * This object represents a connection between the SLI port and another + * Nx_Port on the fabric. Note this can be either a well known port such + * as a F_Port (i.e. ff:ff:fe) or another N_Port. + * @indicator: RPI + * @fc_id: FC address + * @attached: true if attached + * @nport: associated SLI port + * @node: associated node + */ +struct efc_remote_node { + u32 indicator; + u32 index; + u32 fc_id; + + bool attached; + + struct efc_nport *nport; + void *node; +}; + +/** + * FC Node object + * @efc: pointer back to efc structure + * @display_name: Node display name + * @nort: Assosiated nport pointer. + * @hold_frames: hold incoming frames if true + * @els_io_enabled: Enable allocating els ios for this node + * @els_ios_lock: lock to protect the els ios list + * @els_ios_list: ELS I/O's for this node + * @ini_node: backend initiator private node data + * @tgt_node: backend target private node data + * @rnode: Remote node + * @sm: state machine context + * @evtdepth: current event posting nesting depth + * @req_free: this node is to be free'd + * @attached: node is attached (REGLOGIN complete) + * @fcp_enabled: node is enabled to handle FCP + * @rscn_pending: for name server node RSCN is pending + * @send_plogi: send PLOGI accept, upon completion of node attach + * @send_plogi_acc: TRUE if io_alloc() is enabled. + * @send_ls_acc: type of LS acc to send + * @ls_acc_io: SCSI IO for LS acc + * @ls_acc_oxid: OX_ID for pending accept + * @ls_acc_did: D_ID for pending accept + * @shutdown_reason: reason for node shutdown + * @sparm_dma_buf: service parameters buffer + * @service_params: plogi/acc frame from remote device + * @pend_frames_lock: lock for inbound pending frames list + * @pend_frames: inbound pending frames list + * @pend_frames_processed:count of frames processed in hold frames interval + * @ox_id_in_use: used to verify one at a time us of ox_id + * @els_retries_remaining:for ELS, number of retries remaining + * @els_req_cnt: number of outstanding ELS requests + * @els_cmpl_cnt: number of outstanding ELS completions + * @abort_cnt: Abort counter for debugging purpos + * @current_state_name: current node state + * @prev_state_name: previous node state + * @current_evt: current event + * @prev_evt: previous event + * @targ: node is target capable + * @init: node is init capable + * @refound: Handle node refound case when node is being deleted + * @els_io_pend_list: list of pending (not yet processed) ELS IOs + * @els_io_active_list: list of active (processed) ELS IOs + * @nodedb_state: Node debugging, saved state + * @gidpt_delay_timer: GIDPT delay timer + * @time_last_gidpt_msec:Start time of last target RSCN GIDPT + * @wwnn: remote port WWNN + * @wwpn: remote port WWPN + */ +struct efc_node { + struct efc *efc; + char display_name[EFC_NAME_LENGTH]; + struct efc_nport *nport; + struct kref ref; + void (*release)(struct kref *arg); + bool hold_frames; + bool els_io_enabled; + bool send_plogi_acc; + bool send_plogi; + bool rscn_pending; + bool fcp_enabled; + bool attached; + bool req_free; + + spinlock_t els_ios_lock; + struct list_head els_ios_list; + void *ini_node; + void *tgt_node; + + struct efc_remote_node rnode; + /* Declarations private to FC trannport */ + struct efc_sm_ctx sm; + u32 evtdepth; + + enum efc_node_send_ls_acc send_ls_acc; + void *ls_acc_io; + u32 ls_acc_oxid; + u32 ls_acc_did; + enum efc_node_shutd_rsn shutdown_reason; + bool targ; + bool init; + bool refound; + struct efc_dma sparm_dma_buf; + u8 service_params[EFC_SERVICE_PARMS_LENGTH]; + spinlock_t pend_frames_lock; + struct list_head pend_frames; + u32 pend_frames_processed; + u32 ox_id_in_use; + u32 els_retries_remaining; + u32 els_req_cnt; + u32 els_cmpl_cnt; + u32 abort_cnt; + + char current_state_name[EFC_SM_NAME_LENGTH]; + char prev_state_name[EFC_SM_NAME_LENGTH]; + int current_evt; + int prev_evt; + + void (*nodedb_state)(struct efc_sm_ctx *ctx, + u32 evt, void *arg); + struct timer_list gidpt_delay_timer; + u64 time_last_gidpt_msec; + + char wwnn[EFC_WWN_LENGTH]; + char wwpn[EFC_WWN_LENGTH]; +}; + +/** + * NPIV port + * + * Collection of the information required to restore a virtual port across + * link events + * @wwnn: node name + * @wwpn: port name + * @fc_id: port id + * @tgt_data: target backend pointer + * @ini_data: initiator backend pointe + * @nport: Used to match record after attaching for update + * + */ + +struct efc_vport_spec { + struct list_head list_entry; + u64 wwnn; + u64 wwpn; + u32 fc_id; + bool enable_tgt; + bool enable_ini; + void *tgt_data; + void *ini_data; + struct efc_nport *nport; +}; + +#define node_printf(node, fmt, args...) \ + efc_log_info(node->efc, "[%s] " fmt, node->display_name, ##args) + +/* Node SM IO Context Callback structure */ +struct efc_node_cb { + int status; + int ext_status; + struct efc_hw_rq_buffer *header; + struct efc_hw_rq_buffer *payload; + struct efc_dma els_rsp; + + /* Actual length of data received */ + int rsp_len; +}; + +/* HW unsolicited callback status */ +enum efc_hw_unsol_status { + EFC_HW_UNSOL_SUCCESS, + EFC_HW_UNSOL_ERROR, + EFC_HW_UNSOL_ABTS_RCVD, + EFC_HW_UNSOL_MAX, /**< must be last */ +}; + +enum efc_hw_rq_buffer_type { + EFC_HW_RQ_BUFFER_TYPE_HDR, + EFC_HW_RQ_BUFFER_TYPE_PAYLOAD, + EFC_HW_RQ_BUFFER_TYPE_MAX, +}; + +struct efc_hw_rq_buffer { + u16 rqindex; + struct efc_dma dma; +}; + +/* + * Defines a general FC sequence object, + * consisting of a header, payload buffers + * and a HW IO in the case of port owned XRI + */ +struct efc_hw_sequence { + struct list_head list_entry; + void *hw; + u8 fcfi; + u8 auto_xrdy; + u8 out_of_xris; + enum efc_hw_unsol_status status; + + struct efc_hw_rq_buffer *header; + struct efc_hw_rq_buffer *payload; + + void *hw_priv; +}; + +enum efc_disc_io_type { + EFC_DISC_IO_ELS_REQ, + EFC_DISC_IO_ELS_RESP, + EFC_DISC_IO_CT_REQ, + EFC_DISC_IO_CT_RESP +}; + +struct efc_io_els_params { + u32 s_id; + u16 ox_id; + u8 timeout; +}; + +struct efc_io_ct_params { + u8 r_ctl; + u8 type; + u8 df_ctl; + u8 timeout; + u16 ox_id; +}; + +union efc_disc_io_param { + struct efc_io_els_params els; + struct efc_io_ct_params ct; +}; + +struct efc_disc_io { + struct efc_dma req; /* send buffer */ + struct efc_dma rsp; /* receive buffer */ + enum efc_disc_io_type io_type; /* EFC_DISC_IO_TYPE enum*/ + u16 xmit_len; /* Length of els request*/ + u16 rsp_len; /* Max length of rsps to be rcvd */ + u32 rpi; /* Registered RPI */ + u32 vpi; /* VPI for this nport */ + u32 s_id; + u32 d_id; + bool rpi_registered; /* if false, use tmp RPI */ + union efc_disc_io_param iparam; +}; + +/* Return value indiacating the sequence can not be freed */ +#define EFC_HW_SEQ_HOLD 0 +/* Return value indiacating the sequence can be freed */ +#define EFC_HW_SEQ_FREE 1 + +struct libefc_function_template { + /*Sport*/ + int (*new_nport)(struct efc *efc, struct efc_nport *sp); + void (*del_nport)(struct efc *efc, struct efc_nport *sp); + + /*Scsi Node*/ + int (*scsi_new_node)(struct efc *efc, struct efc_node *n); + int (*scsi_del_node)(struct efc *efc, struct efc_node *n, int reason); + + int (*issue_mbox_rqst)(void *efct, void *buf, void *cb, void *arg); + /*Send ELS IO*/ + int (*send_els)(struct efc *efc, struct efc_disc_io *io); + /*Send BLS IO*/ + int (*send_bls)(struct efc *efc, u32 type, struct sli_bls_params *bls); + /*Free HW frame*/ + int (*hw_seq_free)(struct efc *efc, struct efc_hw_sequence *seq); +}; + +#define EFC_LOG_LIB 0x01 +#define EFC_LOG_NODE 0x02 +#define EFC_LOG_PORT 0x04 +#define EFC_LOG_DOMAIN 0x08 +#define EFC_LOG_ELS 0x10 +#define EFC_LOG_DOMAIN_SM 0x20 +#define EFC_LOG_SM 0x40 + +/* efc library port structure */ +struct efc { + void *base; + struct pci_dev *pci; + struct sli4 *sli; + u32 fcfi; + u64 req_wwpn; + u64 req_wwnn; + + u64 def_wwpn; + u64 def_wwnn; + u64 max_xfer_size; + mempool_t *node_pool; + struct dma_pool *node_dma_pool; + u32 nodes_count; + + u32 link_status; + + struct list_head vport_list; + /* lock to protect the vport list */ + spinlock_t vport_lock; + + struct libefc_function_template tt; + /* lock to protect the discovery library. + * Refer to efclib.c for more details. + */ + spinlock_t lock; + + bool enable_ini; + bool enable_tgt; + + u32 log_level; + + struct efc_domain *domain; + void (*domain_free_cb)(struct efc *efc, void *arg); + void *domain_free_cb_arg; + + u64 tgt_rscn_delay_msec; + u64 tgt_rscn_period_msec; + + bool external_loopback; + u32 nodedb_mask; + u32 logmask; + mempool_t *els_io_pool; + atomic_t els_io_alloc_failed_count; + + /* hold pending frames */ + bool hold_frames; + /* lock to protect pending frames list access */ + spinlock_t pend_frames_lock; + struct list_head pend_frames; + /* count of pending frames that were processed */ + u32 pend_frames_processed; + +}; + +/* + * EFC library registration + * **********************************/ +int efcport_init(struct efc *efc); +void efcport_destroy(struct efc *efc); +/* + * EFC Domain + * **********************************/ +int efc_domain_cb(void *arg, int event, void *data); +void +efc_register_domain_free_cb(struct efc *efc, + void (*callback)(struct efc *efc, void *arg), + void *arg); + +/* + * EFC nport + * **********************************/ +void efc_nport_cb(void *arg, int event, void *data); +struct efc_vport_spec *efc_vport_create_spec(struct efc *efc, u64 wwnn, + u64 wwpn, u32 fc_id, bool enable_ini, bool enable_tgt, + void *tgt_data, void *ini_data); +int efc_nport_vport_new(struct efc_domain *domain, u64 wwpn, + u64 wwnn, u32 fc_id, bool ini, bool tgt, + void *tgt_data, void *ini_data); +int efc_nport_vport_del(struct efc *efc, struct efc_domain *domain, + u64 wwpn, u64 wwnn); + +void efc_vport_del_all(struct efc *efc); + +/* + * EFC Node + * **********************************/ +int efc_remote_node_cb(void *arg, int event, void *data); +void efc_node_fcid_display(u32 fc_id, char *buffer, u32 buf_len); +void efc_node_post_shutdown(struct efc_node *node, u32 evt, void *arg); +u64 efc_node_get_wwpn(struct efc_node *node); + +/* + * EFC FCP/ELS/CT interface + * **********************************/ +void efc_dispatch_frame(struct efc *efc, struct efc_hw_sequence *seq); +void efc_disc_io_complete(struct efc_disc_io *io, u32 len, u32 status, + u32 ext_status); + +/* + * EFC SCSI INTERACTION LAYER + * **********************************/ +void efc_scsi_sess_reg_complete(struct efc_node *node, u32 status); +void efc_scsi_del_initiator_complete(struct efc *efc, struct efc_node *node); +void efc_scsi_del_target_complete(struct efc *efc, struct efc_node *node); +void efc_scsi_io_list_empty(struct efc *efc, struct efc_node *node); + +#endif /* __EFCLIB_H__ */