1 /* 2 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc. 3 * All rights reserved 4 * www.brocade.com 5 * 6 * Linux driver for Brocade Fibre Channel Host Bus Adapter. 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License (GPL) Version 2 as 10 * published by the Free Software Foundation 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 */ 17 18 #ifndef __BFAD_IM_H__ 19 #define __BFAD_IM_H__ 20 21 #include "bfa_fcs.h" 22 23 #define FCPI_NAME " fcpim" 24 25 #ifndef KOBJ_NAME_LEN 26 #define KOBJ_NAME_LEN 20 27 #endif 28 29 bfa_status_t bfad_im_module_init(void); 30 void bfad_im_module_exit(void); 31 bfa_status_t bfad_im_probe(struct bfad_s *bfad); 32 void bfad_im_probe_undo(struct bfad_s *bfad); 33 bfa_status_t bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port); 34 void bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port); 35 void bfad_im_port_clean(struct bfad_im_port_s *im_port); 36 int bfad_im_scsi_host_alloc(struct bfad_s *bfad, 37 struct bfad_im_port_s *im_port, struct device *dev); 38 void bfad_im_scsi_host_free(struct bfad_s *bfad, 39 struct bfad_im_port_s *im_port); 40 41 #define MAX_FCP_TARGET 1024 42 #define MAX_FCP_LUN 16384 43 #define BFAD_TARGET_RESET_TMO 60 44 #define BFAD_LUN_RESET_TMO 60 45 #define ScsiResult(host_code, scsi_code) (((host_code) << 16) | scsi_code) 46 #define BFA_QUEUE_FULL_RAMP_UP_TIME 120 47 48 /* 49 * itnim flags 50 */ 51 #define IO_DONE_BIT 0 52 53 struct bfad_itnim_data_s { 54 struct bfad_itnim_s *itnim; 55 }; 56 57 struct bfad_im_port_s { 58 struct bfad_s *bfad; 59 struct bfad_port_s *port; 60 struct work_struct port_delete_work; 61 int idr_id; 62 u16 cur_scsi_id; 63 u16 flags; 64 struct list_head binding_list; 65 struct Scsi_Host *shost; 66 struct list_head itnim_mapped_list; 67 struct fc_vport *fc_vport; 68 }; 69 70 enum bfad_itnim_state { 71 ITNIM_STATE_NONE, 72 ITNIM_STATE_ONLINE, 73 ITNIM_STATE_OFFLINE_PENDING, 74 ITNIM_STATE_OFFLINE, 75 ITNIM_STATE_TIMEOUT, 76 ITNIM_STATE_FREE, 77 }; 78 79 /* 80 * Per itnim data structure 81 */ 82 struct bfad_itnim_s { 83 struct list_head list_entry; 84 struct bfa_fcs_itnim_s fcs_itnim; 85 struct work_struct itnim_work; 86 u32 flags; 87 enum bfad_itnim_state state; 88 struct bfad_im_s *im; 89 struct bfad_im_port_s *im_port; 90 struct bfad_rport_s *drv_rport; 91 struct fc_rport *fc_rport; 92 struct bfa_itnim_s *bfa_itnim; 93 u16 scsi_tgt_id; 94 u16 channel; 95 u16 queue_work; 96 unsigned long last_ramp_up_time; 97 unsigned long last_queue_full_time; 98 }; 99 100 enum bfad_binding_type { 101 FCP_PWWN_BINDING = 0x1, 102 FCP_NWWN_BINDING = 0x2, 103 FCP_FCID_BINDING = 0x3, 104 }; 105 106 struct bfad_fcp_binding { 107 struct list_head list_entry; 108 enum bfad_binding_type binding_type; 109 u16 scsi_target_id; 110 u32 fc_id; 111 wwn_t nwwn; 112 wwn_t pwwn; 113 }; 114 115 struct bfad_im_s { 116 struct bfad_s *bfad; 117 struct workqueue_struct *drv_workq; 118 char drv_workq_name[KOBJ_NAME_LEN]; 119 struct work_struct aen_im_notify_work; 120 }; 121 122 #define bfad_get_aen_entry(_drv, _entry) do { \ 123 unsigned long _flags; \ 124 spin_lock_irqsave(&(_drv)->bfad_aen_spinlock, _flags); \ 125 bfa_q_deq(&(_drv)->free_aen_q, &(_entry)); \ 126 if (_entry) \ 127 list_add_tail(&(_entry)->qe, &(_drv)->active_aen_q); \ 128 spin_unlock_irqrestore(&(_drv)->bfad_aen_spinlock, _flags); \ 129 } while (0) 130 131 /* post fc_host vendor event */ 132 #define bfad_im_post_vendor_event(_entry, _drv, _cnt, _cat, _evt) do { \ 133 do_gettimeofday(&(_entry)->aen_tv); \ 134 (_entry)->bfad_num = (_drv)->inst_no; \ 135 (_entry)->seq_num = (_cnt); \ 136 (_entry)->aen_category = (_cat); \ 137 (_entry)->aen_type = (_evt); \ 138 if ((_drv)->bfad_flags & BFAD_FC4_PROBE_DONE) \ 139 queue_work((_drv)->im->drv_workq, \ 140 &(_drv)->im->aen_im_notify_work); \ 141 } while (0) 142 143 struct Scsi_Host *bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, 144 struct bfad_s *); 145 bfa_status_t bfad_thread_workq(struct bfad_s *bfad); 146 void bfad_destroy_workq(struct bfad_im_s *im); 147 void bfad_fc_host_init(struct bfad_im_port_s *im_port); 148 void bfad_scsi_host_free(struct bfad_s *bfad, 149 struct bfad_im_port_s *im_port); 150 void bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, 151 struct scsi_device *sdev); 152 void bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev); 153 struct bfad_itnim_s *bfad_get_itnim(struct bfad_im_port_s *im_port, int id); 154 155 extern struct scsi_host_template bfad_im_scsi_host_template; 156 extern struct scsi_host_template bfad_im_vport_template; 157 extern struct fc_function_template bfad_im_fc_function_template; 158 extern struct fc_function_template bfad_im_vport_fc_function_template; 159 extern struct scsi_transport_template *bfad_im_scsi_transport_template; 160 extern struct scsi_transport_template *bfad_im_scsi_vport_transport_template; 161 162 extern struct device_attribute *bfad_im_host_attrs[]; 163 extern struct device_attribute *bfad_im_vport_attrs[]; 164 165 irqreturn_t bfad_intx(int irq, void *dev_id); 166 167 int bfad_im_bsg_request(struct fc_bsg_job *job); 168 int bfad_im_bsg_timeout(struct fc_bsg_job *job); 169 170 /* 171 * Macro to set the SCSI device sdev_bflags - sdev_bflags are used by the 172 * SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan 173 * 174 * Internally iterate's over all the ITNIM's part of the im_port & set's the 175 * sdev_bflags for the scsi_device associated with LUN #0. 176 */ 177 #define bfad_reset_sdev_bflags(__im_port, __lunmask_cfg) do { \ 178 struct scsi_device *__sdev = NULL; \ 179 struct bfad_itnim_s *__itnim = NULL; \ 180 u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN; \ 181 list_for_each_entry(__itnim, &((__im_port)->itnim_mapped_list), \ 182 list_entry) { \ 183 __sdev = scsi_device_lookup((__im_port)->shost, \ 184 __itnim->channel, \ 185 __itnim->scsi_tgt_id, 0); \ 186 if (__sdev) { \ 187 if ((__lunmask_cfg) == BFA_TRUE) \ 188 __sdev->sdev_bflags |= scan_flags; \ 189 else \ 190 __sdev->sdev_bflags &= ~scan_flags; \ 191 scsi_device_put(__sdev); \ 192 } \ 193 } \ 194 } while (0) 195 196 #endif 197