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1/*
2 * This file is part of the Chelsio FCoE driver for Linux.
3 *
4 * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#ifndef __CSIO_LNODE_H__
36#define __CSIO_LNODE_H__
37
38#include <linux/kref.h>
39#include <linux/timer.h>
40#include <linux/workqueue.h>
41#include <scsi/fc/fc_els.h>
42
43
44#include "csio_defs.h"
45#include "csio_hw.h"
46
47#define CSIO_FCOE_MAX_NPIV 128
48#define CSIO_FCOE_MAX_RNODES 2048
49
50/* FDMI port attribute unknown speed */
51#define CSIO_HBA_PORTSPEED_UNKNOWN 0x8000
52
53extern int csio_fcoe_rnodes;
54extern int csio_fdmi_enable;
55
56struct csio_fcf_info {
57 struct list_head list;
58 uint8_t priority;
59 uint8_t mac[6];
60 uint8_t name_id[8];
61 uint8_t fabric[8];
62 uint16_t vf_id;
63 uint8_t vlan_id;
64 uint16_t max_fcoe_size;
65 uint8_t fc_map[3];
66 uint32_t fka_adv;
67 uint32_t fcfi;
68 uint8_t get_next:1;
69 uint8_t link_aff:1;
70 uint8_t fpma:1;
71 uint8_t spma:1;
72 uint8_t login:1;
73 uint8_t portid;
74 uint8_t spma_mac[6];
75 struct kref kref;
76};
77
78/* Defines for flags */
79#define CSIO_LNF_FIPSUPP 0x00000001 /* Fip Supported */
80#define CSIO_LNF_NPIVSUPP 0x00000002 /* NPIV supported */
81#define CSIO_LNF_LINK_ENABLE 0x00000004 /* Link enabled */
82#define CSIO_LNF_FDMI_ENABLE 0x00000008 /* FDMI support */
83
84/* Transport events */
85enum csio_ln_fc_evt {
86 CSIO_LN_FC_LINKUP = 1,
87 CSIO_LN_FC_LINKDOWN,
88 CSIO_LN_FC_RSCN,
89 CSIO_LN_FC_ATTRIB_UPDATE,
90};
91
92/* Lnode stats */
93struct csio_lnode_stats {
94 uint32_t n_link_up; /* Link down */
95 uint32_t n_link_down; /* Link up */
96 uint32_t n_err; /* error */
97 uint32_t n_err_nomem; /* memory not available */
98 uint32_t n_inval_parm; /* Invalid parameters */
99 uint32_t n_evt_unexp; /* unexpected event */
100 uint32_t n_evt_drop; /* dropped event */
101 uint32_t n_rnode_match; /* matched rnode */
102 uint32_t n_dev_loss_tmo; /* Device loss timeout */
103 uint32_t n_fdmi_err; /* fdmi err */
104 uint32_t n_evt_fw[PROTO_ERR_IMPL_LOGO + 1]; /* fw events */
105 enum csio_ln_ev n_evt_sm[CSIO_LNE_MAX_EVENT]; /* State m/c events */
106 uint32_t n_rnode_alloc; /* rnode allocated */
107 uint32_t n_rnode_free; /* rnode freed */
108 uint32_t n_rnode_nomem; /* rnode alloc failure */
109 uint32_t n_input_requests; /* Input Requests */
110 uint32_t n_output_requests; /* Output Requests */
111 uint32_t n_control_requests; /* Control Requests */
112 uint32_t n_input_bytes; /* Input Bytes */
113 uint32_t n_output_bytes; /* Output Bytes */
114 uint32_t rsvd1;
115};
116
117/* Common Lnode params */
118struct csio_lnode_params {
119 uint32_t ra_tov;
120 uint32_t fcfi;
121 uint32_t log_level; /* Module level for debugging */
122};
123
124struct csio_service_parms {
125 struct fc_els_csp csp; /* Common service parms */
126 uint8_t wwpn[8]; /* WWPN */
127 uint8_t wwnn[8]; /* WWNN */
128 struct fc_els_cssp clsp[4]; /* Class service params */
129 uint8_t vvl[16]; /* Vendor version level */
130};
131
132/* Lnode */
133struct csio_lnode {
134 struct csio_sm sm; /* State machine + sibling
135 * lnode list.
136 */
137 struct csio_hw *hwp; /* Pointer to the HW module */
138 uint8_t portid; /* Port ID */
139 uint8_t rsvd1;
140 uint16_t rsvd2;
141 uint32_t dev_num; /* Device number */
142 uint32_t flags; /* Flags */
143 struct list_head fcf_lsthead; /* FCF entries */
144 struct csio_fcf_info *fcfinfo; /* FCF in use */
145 struct csio_ioreq *mgmt_req; /* MGMT request */
146
147 /* FCoE identifiers */
148 uint8_t mac[6];
149 uint32_t nport_id;
150 struct csio_service_parms ln_sparm; /* Service parms */
151
152 /* Firmware identifiers */
153 uint32_t fcf_flowid; /*fcf flowid */
154 uint32_t vnp_flowid;
155 uint16_t ssn_cnt; /* Registered Session */
156 uint8_t cur_evt; /* Current event */
157 uint8_t prev_evt; /* Previous event */
158
159 /* Children */
160 struct list_head cln_head; /* Head of the children lnode
161 * list.
162 */
163 uint32_t num_vports; /* Total NPIV/children LNodes*/
164 struct csio_lnode *pln; /* Parent lnode of child
165 * lnodes.
166 */
167 struct list_head cmpl_q; /* Pending I/Os on this lnode */
168
169 /* Remote node information */
170 struct list_head rnhead; /* Head of rnode list */
171 uint32_t num_reg_rnodes; /* Number of rnodes registered
172 * with the host.
173 */
174 uint32_t n_scsi_tgts; /* Number of scsi targets
175 * found
176 */
177 uint32_t last_scan_ntgts;/* Number of scsi targets
178 * found per last scan.
179 */
180 uint32_t tgt_scan_tick; /* timer started after
181 * new tgt found
182 */
183 /* FC transport data */
184 struct fc_vport *fc_vport;
185 struct fc_host_statistics fch_stats;
186
187 struct csio_lnode_stats stats; /* Common lnode stats */
188 struct csio_lnode_params params; /* Common lnode params */
189};
190
191#define csio_lnode_to_hw(ln) ((ln)->hwp)
192#define csio_root_lnode(ln) (csio_lnode_to_hw((ln))->rln)
193#define csio_parent_lnode(ln) ((ln)->pln)
194#define csio_ln_flowid(ln) ((ln)->vnp_flowid)
195#define csio_ln_wwpn(ln) ((ln)->ln_sparm.wwpn)
196#define csio_ln_wwnn(ln) ((ln)->ln_sparm.wwnn)
197
198#define csio_is_root_ln(ln) (((ln) == csio_root_lnode((ln))) ? 1 : 0)
199#define csio_is_phys_ln(ln) (((ln)->pln == NULL) ? 1 : 0)
200#define csio_is_npiv_ln(ln) (((ln)->pln != NULL) ? 1 : 0)
201
202
203#define csio_ln_dbg(_ln, _fmt, ...) \
204 csio_dbg(_ln->hwp, "%x:%x "_fmt, CSIO_DEVID_HI(_ln), \
205 CSIO_DEVID_LO(_ln), ##__VA_ARGS__);
206
207#define csio_ln_err(_ln, _fmt, ...) \
208 csio_err(_ln->hwp, "%x:%x "_fmt, CSIO_DEVID_HI(_ln), \
209 CSIO_DEVID_LO(_ln), ##__VA_ARGS__);
210
211#define csio_ln_warn(_ln, _fmt, ...) \
212 csio_warn(_ln->hwp, "%x:%x "_fmt, CSIO_DEVID_HI(_ln), \
213 CSIO_DEVID_LO(_ln), ##__VA_ARGS__);
214
215/* HW->Lnode notifications */
216enum csio_ln_notify {
217 CSIO_LN_NOTIFY_HWREADY = 1,
218 CSIO_LN_NOTIFY_HWSTOP,
219 CSIO_LN_NOTIFY_HWREMOVE,
220 CSIO_LN_NOTIFY_HWRESET,
221};
222
223void csio_fcoe_fwevt_handler(struct csio_hw *, __u8 cpl_op, __be64 *);
224int csio_is_lnode_ready(struct csio_lnode *);
225void csio_lnode_state_to_str(struct csio_lnode *ln, int8_t *str);
226struct csio_lnode *csio_lnode_lookup_by_wwpn(struct csio_hw *, uint8_t *);
227int csio_get_phy_port_stats(struct csio_hw *, uint8_t ,
228 struct fw_fcoe_port_stats *);
229int csio_scan_done(struct csio_lnode *, unsigned long, unsigned long,
230 unsigned long, unsigned long);
231void csio_notify_lnodes(struct csio_hw *, enum csio_ln_notify);
232void csio_disable_lnodes(struct csio_hw *, uint8_t, bool);
233void csio_lnode_async_event(struct csio_lnode *, enum csio_ln_fc_evt);
234int csio_ln_fdmi_start(struct csio_lnode *, void *);
235int csio_lnode_start(struct csio_lnode *);
236void csio_lnode_stop(struct csio_lnode *);
237void csio_lnode_close(struct csio_lnode *);
238int csio_lnode_init(struct csio_lnode *, struct csio_hw *,
239 struct csio_lnode *);
240void csio_lnode_exit(struct csio_lnode *);
241
242#endif /* ifndef __CSIO_LNODE_H__ */