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 30 bfa_status_t bfad_im_module_init(void); 31 void bfad_im_module_exit(void); 32 bfa_status_t bfad_im_probe(struct bfad_s *bfad); 33 void bfad_im_probe_undo(struct bfad_s *bfad); 34 bfa_status_t bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port); 35 void bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port); 36 void bfad_im_port_clean(struct bfad_im_port_s *im_port); 37 int bfad_im_scsi_host_alloc(struct bfad_s *bfad, 38 struct bfad_im_port_s *im_port, struct device *dev); 39 void bfad_im_scsi_host_free(struct bfad_s *bfad, 40 struct bfad_im_port_s *im_port); 41 u32 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 BFA_QUEUE_FULL_RAMP_UP_TIME 120 48 49 /* 50 * itnim flags 51 */ 52 #define IO_DONE_BIT 0 53 54 struct bfad_itnim_data_s { 55 struct bfad_itnim_s *itnim; 56 }; 57 58 struct bfad_im_port_s { 59 struct bfad_s *bfad; 60 struct bfad_port_s *port; 61 struct work_struct port_delete_work; 62 int idr_id; 63 u16 cur_scsi_id; 64 u16 flags; 65 struct list_head binding_list; 66 struct Scsi_Host *shost; 67 struct list_head itnim_mapped_list; 68 struct fc_vport *fc_vport; 69 }; 70 71 struct bfad_im_port_pointer { 72 struct bfad_im_port_s *p; 73 }; 74 75 static inline struct bfad_im_port_s *bfad_get_im_port(struct Scsi_Host *host) 76 { 77 struct bfad_im_port_pointer *im_portp = shost_priv(host); 78 return im_portp->p; 79 } 80 81 enum bfad_itnim_state { 82 ITNIM_STATE_NONE, 83 ITNIM_STATE_ONLINE, 84 ITNIM_STATE_OFFLINE_PENDING, 85 ITNIM_STATE_OFFLINE, 86 ITNIM_STATE_TIMEOUT, 87 ITNIM_STATE_FREE, 88 }; 89 90 /* 91 * Per itnim data structure 92 */ 93 struct bfad_itnim_s { 94 struct list_head list_entry; 95 struct bfa_fcs_itnim_s fcs_itnim; 96 struct work_struct itnim_work; 97 u32 flags; 98 enum bfad_itnim_state state; 99 struct bfad_im_s *im; 100 struct bfad_im_port_s *im_port; 101 struct bfad_rport_s *drv_rport; 102 struct fc_rport *fc_rport; 103 struct bfa_itnim_s *bfa_itnim; 104 u16 scsi_tgt_id; 105 u16 channel; 106 u16 queue_work; 107 unsigned long last_ramp_up_time; 108 unsigned long last_queue_full_time; 109 }; 110 111 enum bfad_binding_type { 112 FCP_PWWN_BINDING = 0x1, 113 FCP_NWWN_BINDING = 0x2, 114 FCP_FCID_BINDING = 0x3, 115 }; 116 117 struct bfad_fcp_binding { 118 struct list_head list_entry; 119 enum bfad_binding_type binding_type; 120 u16 scsi_target_id; 121 u32 fc_id; 122 wwn_t nwwn; 123 wwn_t pwwn; 124 }; 125 126 struct bfad_im_s { 127 struct bfad_s *bfad; 128 struct workqueue_struct *drv_workq; 129 char drv_workq_name[KOBJ_NAME_LEN]; 130 struct work_struct aen_im_notify_work; 131 }; 132 133 #define bfad_get_aen_entry(_drv, _entry) do { \ 134 unsigned long _flags; \ 135 spin_lock_irqsave(&(_drv)->bfad_aen_spinlock, _flags); \ 136 bfa_q_deq(&(_drv)->free_aen_q, &(_entry)); \ 137 if (_entry) \ 138 list_add_tail(&(_entry)->qe, &(_drv)->active_aen_q); \ 139 spin_unlock_irqrestore(&(_drv)->bfad_aen_spinlock, _flags); \ 140 } while (0) 141 142 /* post fc_host vendor event */ 143 static inline void bfad_im_post_vendor_event(struct bfa_aen_entry_s *entry, 144 struct bfad_s *drv, int cnt, 145 enum bfa_aen_category cat, 146 int evt) 147 { 148 struct timespec64 ts; 149 150 ktime_get_real_ts64(&ts); 151 /* 152 * 'unsigned long aen_tv_sec' overflows in y2106 on 32-bit 153 * architectures, or in 2038 if user space interprets it 154 * as 'signed'. 155 */ 156 entry->aen_tv_sec = ts.tv_sec; 157 entry->aen_tv_usec = ts.tv_nsec / NSEC_PER_USEC; 158 entry->bfad_num = drv->inst_no; 159 entry->seq_num = cnt; 160 entry->aen_category = cat; 161 entry->aen_type = evt; 162 if (drv->bfad_flags & BFAD_FC4_PROBE_DONE) 163 queue_work(drv->im->drv_workq, &drv->im->aen_im_notify_work); 164 } 165 166 struct Scsi_Host *bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, 167 struct bfad_s *); 168 bfa_status_t bfad_thread_workq(struct bfad_s *bfad); 169 void bfad_destroy_workq(struct bfad_im_s *im); 170 void bfad_fc_host_init(struct bfad_im_port_s *im_port); 171 void bfad_scsi_host_free(struct bfad_s *bfad, 172 struct bfad_im_port_s *im_port); 173 void bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, 174 struct scsi_device *sdev); 175 void bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev); 176 struct bfad_itnim_s *bfad_get_itnim(struct bfad_im_port_s *im_port, int id); 177 178 extern struct scsi_host_template bfad_im_scsi_host_template; 179 extern struct scsi_host_template bfad_im_vport_template; 180 extern struct fc_function_template bfad_im_fc_function_template; 181 extern struct fc_function_template bfad_im_vport_fc_function_template; 182 extern struct scsi_transport_template *bfad_im_scsi_transport_template; 183 extern struct scsi_transport_template *bfad_im_scsi_vport_transport_template; 184 185 extern struct device_attribute *bfad_im_host_attrs[]; 186 extern struct device_attribute *bfad_im_vport_attrs[]; 187 188 irqreturn_t bfad_intx(int irq, void *dev_id); 189 190 int bfad_im_bsg_request(struct bsg_job *job); 191 int bfad_im_bsg_timeout(struct bsg_job *job); 192 193 /* 194 * Macro to set the SCSI device sdev_bflags - sdev_bflags are used by the 195 * SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan 196 * 197 * Internally iterate's over all the ITNIM's part of the im_port & set's the 198 * sdev_bflags for the scsi_device associated with LUN #0. 199 */ 200 #define bfad_reset_sdev_bflags(__im_port, __lunmask_cfg) do { \ 201 struct scsi_device *__sdev = NULL; \ 202 struct bfad_itnim_s *__itnim = NULL; \ 203 u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN; \ 204 list_for_each_entry(__itnim, &((__im_port)->itnim_mapped_list), \ 205 list_entry) { \ 206 __sdev = scsi_device_lookup((__im_port)->shost, \ 207 __itnim->channel, \ 208 __itnim->scsi_tgt_id, 0); \ 209 if (__sdev) { \ 210 if ((__lunmask_cfg) == BFA_TRUE) \ 211 __sdev->sdev_bflags |= scan_flags; \ 212 else \ 213 __sdev->sdev_bflags &= ~scan_flags; \ 214 scsi_device_put(__sdev); \ 215 } \ 216 } \ 217 } while (0) 218 219 #endif 220