tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
3 * Copyright (c) 2014- QLogic Corporation.
4 * All rights reserved
5 * www.qlogic.com
6 *
7 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License (GPL) Version 2 as
11 * published by the Free Software Foundation
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 */
18
19#ifndef __BFAD_IM_H__
20#define __BFAD_IM_H__
21
22#include "bfa_fcs.h"
23
24#define FCPI_NAME " fcpim"
25
26#ifndef KOBJ_NAME_LEN
27#define KOBJ_NAME_LEN 20
28#endif
29
30bfa_status_t bfad_im_module_init(void);
31void bfad_im_module_exit(void);
32bfa_status_t bfad_im_probe(struct bfad_s *bfad);
33void bfad_im_probe_undo(struct bfad_s *bfad);
34bfa_status_t bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port);
35void bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port);
36void bfad_im_port_clean(struct bfad_im_port_s *im_port);
37int bfad_im_scsi_host_alloc(struct bfad_s *bfad,
38 struct bfad_im_port_s *im_port, struct device *dev);
39void bfad_im_scsi_host_free(struct bfad_s *bfad,
40 struct bfad_im_port_s *im_port);
41u32 bfad_im_supported_speeds(struct bfa_s *bfa);
42
43#define MAX_FCP_TARGET 1024
44#define MAX_FCP_LUN 16384
45#define BFAD_TARGET_RESET_TMO 60
46#define BFAD_LUN_RESET_TMO 60
47#define ScsiResult(host_code, scsi_code) (((host_code) << 16) | scsi_code)
48#define BFA_QUEUE_FULL_RAMP_UP_TIME 120
49
50/*
51 * itnim flags
52 */
53#define IO_DONE_BIT 0
54
55struct bfad_itnim_data_s {
56 struct bfad_itnim_s *itnim;
57};
58
59struct bfad_im_port_s {
60 struct bfad_s *bfad;
61 struct bfad_port_s *port;
62 struct work_struct port_delete_work;
63 int idr_id;
64 u16 cur_scsi_id;
65 u16 flags;
66 struct list_head binding_list;
67 struct Scsi_Host *shost;
68 struct list_head itnim_mapped_list;
69 struct fc_vport *fc_vport;
70};
71
72enum bfad_itnim_state {
73 ITNIM_STATE_NONE,
74 ITNIM_STATE_ONLINE,
75 ITNIM_STATE_OFFLINE_PENDING,
76 ITNIM_STATE_OFFLINE,
77 ITNIM_STATE_TIMEOUT,
78 ITNIM_STATE_FREE,
79};
80
81/*
82 * Per itnim data structure
83 */
84struct bfad_itnim_s {
85 struct list_head list_entry;
86 struct bfa_fcs_itnim_s fcs_itnim;
87 struct work_struct itnim_work;
88 u32 flags;
89 enum bfad_itnim_state state;
90 struct bfad_im_s *im;
91 struct bfad_im_port_s *im_port;
92 struct bfad_rport_s *drv_rport;
93 struct fc_rport *fc_rport;
94 struct bfa_itnim_s *bfa_itnim;
95 u16 scsi_tgt_id;
96 u16 channel;
97 u16 queue_work;
98 unsigned long last_ramp_up_time;
99 unsigned long last_queue_full_time;
100};
101
102enum bfad_binding_type {
103 FCP_PWWN_BINDING = 0x1,
104 FCP_NWWN_BINDING = 0x2,
105 FCP_FCID_BINDING = 0x3,
106};
107
108struct bfad_fcp_binding {
109 struct list_head list_entry;
110 enum bfad_binding_type binding_type;
111 u16 scsi_target_id;
112 u32 fc_id;
113 wwn_t nwwn;
114 wwn_t pwwn;
115};
116
117struct bfad_im_s {
118 struct bfad_s *bfad;
119 struct workqueue_struct *drv_workq;
120 char drv_workq_name[KOBJ_NAME_LEN];
121 struct work_struct aen_im_notify_work;
122};
123
124#define bfad_get_aen_entry(_drv, _entry) do { \
125 unsigned long _flags; \
126 spin_lock_irqsave(&(_drv)->bfad_aen_spinlock, _flags); \
127 bfa_q_deq(&(_drv)->free_aen_q, &(_entry)); \
128 if (_entry) \
129 list_add_tail(&(_entry)->qe, &(_drv)->active_aen_q); \
130 spin_unlock_irqrestore(&(_drv)->bfad_aen_spinlock, _flags); \
131} while (0)
132
133/* post fc_host vendor event */
134#define bfad_im_post_vendor_event(_entry, _drv, _cnt, _cat, _evt) do { \
135 do_gettimeofday(&(_entry)->aen_tv); \
136 (_entry)->bfad_num = (_drv)->inst_no; \
137 (_entry)->seq_num = (_cnt); \
138 (_entry)->aen_category = (_cat); \
139 (_entry)->aen_type = (_evt); \
140 if ((_drv)->bfad_flags & BFAD_FC4_PROBE_DONE) \
141 queue_work((_drv)->im->drv_workq, \
142 &(_drv)->im->aen_im_notify_work); \
143} while (0)
144
145struct Scsi_Host *bfad_scsi_host_alloc(struct bfad_im_port_s *im_port,
146 struct bfad_s *);
147bfa_status_t bfad_thread_workq(struct bfad_s *bfad);
148void bfad_destroy_workq(struct bfad_im_s *im);
149void bfad_fc_host_init(struct bfad_im_port_s *im_port);
150void bfad_scsi_host_free(struct bfad_s *bfad,
151 struct bfad_im_port_s *im_port);
152void bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim,
153 struct scsi_device *sdev);
154void bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev);
155struct bfad_itnim_s *bfad_get_itnim(struct bfad_im_port_s *im_port, int id);
156
157extern struct scsi_host_template bfad_im_scsi_host_template;
158extern struct scsi_host_template bfad_im_vport_template;
159extern struct fc_function_template bfad_im_fc_function_template;
160extern struct fc_function_template bfad_im_vport_fc_function_template;
161extern struct scsi_transport_template *bfad_im_scsi_transport_template;
162extern struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
163
164extern struct device_attribute *bfad_im_host_attrs[];
165extern struct device_attribute *bfad_im_vport_attrs[];
166
167irqreturn_t bfad_intx(int irq, void *dev_id);
168
169int bfad_im_bsg_request(struct fc_bsg_job *job);
170int bfad_im_bsg_timeout(struct fc_bsg_job *job);
171
172/*
173 * Macro to set the SCSI device sdev_bflags - sdev_bflags are used by the
174 * SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan
175 *
176 * Internally iterate's over all the ITNIM's part of the im_port & set's the
177 * sdev_bflags for the scsi_device associated with LUN #0.
178 */
179#define bfad_reset_sdev_bflags(__im_port, __lunmask_cfg) do { \
180 struct scsi_device *__sdev = NULL; \
181 struct bfad_itnim_s *__itnim = NULL; \
182 u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN; \
183 list_for_each_entry(__itnim, &((__im_port)->itnim_mapped_list), \
184 list_entry) { \
185 __sdev = scsi_device_lookup((__im_port)->shost, \
186 __itnim->channel, \
187 __itnim->scsi_tgt_id, 0); \
188 if (__sdev) { \
189 if ((__lunmask_cfg) == BFA_TRUE) \
190 __sdev->sdev_bflags |= scan_flags; \
191 else \
192 __sdev->sdev_bflags &= ~scan_flags; \
193 scsi_device_put(__sdev); \
194 } \
195 } \
196} while (0)
197
198#endif