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 u32 bfad_im_supported_speeds(struct bfa_s *bfa); 41 42 #define MAX_FCP_TARGET 1024 43 #define MAX_FCP_LUN 16384 44 #define BFAD_TARGET_RESET_TMO 60 45 #define BFAD_LUN_RESET_TMO 60 46 #define ScsiResult(host_code, scsi_code) (((host_code) << 16) | scsi_code) 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 enum bfad_itnim_state { 72 ITNIM_STATE_NONE, 73 ITNIM_STATE_ONLINE, 74 ITNIM_STATE_OFFLINE_PENDING, 75 ITNIM_STATE_OFFLINE, 76 ITNIM_STATE_TIMEOUT, 77 ITNIM_STATE_FREE, 78 }; 79 80 /* 81 * Per itnim data structure 82 */ 83 struct bfad_itnim_s { 84 struct list_head list_entry; 85 struct bfa_fcs_itnim_s fcs_itnim; 86 struct work_struct itnim_work; 87 u32 flags; 88 enum bfad_itnim_state state; 89 struct bfad_im_s *im; 90 struct bfad_im_port_s *im_port; 91 struct bfad_rport_s *drv_rport; 92 struct fc_rport *fc_rport; 93 struct bfa_itnim_s *bfa_itnim; 94 u16 scsi_tgt_id; 95 u16 channel; 96 u16 queue_work; 97 unsigned long last_ramp_up_time; 98 unsigned long last_queue_full_time; 99 }; 100 101 enum bfad_binding_type { 102 FCP_PWWN_BINDING = 0x1, 103 FCP_NWWN_BINDING = 0x2, 104 FCP_FCID_BINDING = 0x3, 105 }; 106 107 struct bfad_fcp_binding { 108 struct list_head list_entry; 109 enum bfad_binding_type binding_type; 110 u16 scsi_target_id; 111 u32 fc_id; 112 wwn_t nwwn; 113 wwn_t pwwn; 114 }; 115 116 struct bfad_im_s { 117 struct bfad_s *bfad; 118 struct workqueue_struct *drv_workq; 119 char drv_workq_name[KOBJ_NAME_LEN]; 120 struct work_struct aen_im_notify_work; 121 }; 122 123 #define bfad_get_aen_entry(_drv, _entry) do { \ 124 unsigned long _flags; \ 125 spin_lock_irqsave(&(_drv)->bfad_aen_spinlock, _flags); \ 126 bfa_q_deq(&(_drv)->free_aen_q, &(_entry)); \ 127 if (_entry) \ 128 list_add_tail(&(_entry)->qe, &(_drv)->active_aen_q); \ 129 spin_unlock_irqrestore(&(_drv)->bfad_aen_spinlock, _flags); \ 130 } while (0) 131 132 /* post fc_host vendor event */ 133 #define bfad_im_post_vendor_event(_entry, _drv, _cnt, _cat, _evt) do { \ 134 do_gettimeofday(&(_entry)->aen_tv); \ 135 (_entry)->bfad_num = (_drv)->inst_no; \ 136 (_entry)->seq_num = (_cnt); \ 137 (_entry)->aen_category = (_cat); \ 138 (_entry)->aen_type = (_evt); \ 139 if ((_drv)->bfad_flags & BFAD_FC4_PROBE_DONE) \ 140 queue_work((_drv)->im->drv_workq, \ 141 &(_drv)->im->aen_im_notify_work); \ 142 } while (0) 143 144 struct Scsi_Host *bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, 145 struct bfad_s *); 146 bfa_status_t bfad_thread_workq(struct bfad_s *bfad); 147 void bfad_destroy_workq(struct bfad_im_s *im); 148 void bfad_fc_host_init(struct bfad_im_port_s *im_port); 149 void bfad_scsi_host_free(struct bfad_s *bfad, 150 struct bfad_im_port_s *im_port); 151 void bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, 152 struct scsi_device *sdev); 153 void bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev); 154 struct bfad_itnim_s *bfad_get_itnim(struct bfad_im_port_s *im_port, int id); 155 156 extern struct scsi_host_template bfad_im_scsi_host_template; 157 extern struct scsi_host_template bfad_im_vport_template; 158 extern struct fc_function_template bfad_im_fc_function_template; 159 extern struct fc_function_template bfad_im_vport_fc_function_template; 160 extern struct scsi_transport_template *bfad_im_scsi_transport_template; 161 extern struct scsi_transport_template *bfad_im_scsi_vport_transport_template; 162 163 extern struct device_attribute *bfad_im_host_attrs[]; 164 extern struct device_attribute *bfad_im_vport_attrs[]; 165 166 irqreturn_t bfad_intx(int irq, void *dev_id); 167 168 int bfad_im_bsg_request(struct fc_bsg_job *job); 169 int bfad_im_bsg_timeout(struct fc_bsg_job *job); 170 171 /* 172 * Macro to set the SCSI device sdev_bflags - sdev_bflags are used by the 173 * SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan 174 * 175 * Internally iterate's over all the ITNIM's part of the im_port & set's the 176 * sdev_bflags for the scsi_device associated with LUN #0. 177 */ 178 #define bfad_reset_sdev_bflags(__im_port, __lunmask_cfg) do { \ 179 struct scsi_device *__sdev = NULL; \ 180 struct bfad_itnim_s *__itnim = NULL; \ 181 u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN; \ 182 list_for_each_entry(__itnim, &((__im_port)->itnim_mapped_list), \ 183 list_entry) { \ 184 __sdev = scsi_device_lookup((__im_port)->shost, \ 185 __itnim->channel, \ 186 __itnim->scsi_tgt_id, 0); \ 187 if (__sdev) { \ 188 if ((__lunmask_cfg) == BFA_TRUE) \ 189 __sdev->sdev_bflags |= scan_flags; \ 190 else \ 191 __sdev->sdev_bflags &= ~scan_flags; \ 192 scsi_device_put(__sdev); \ 193 } \ 194 } \ 195 } while (0) 196 197 #endif 198