drivers/scsi/bfa/bfad_im.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
   4  * Copyright (c) 2014- QLogic Corporation.
   5  * All rights reserved
   6  * www.qlogic.com
   7  *
   8  * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
   9  */
  10
  11 #ifndef __BFAD_IM_H__
  12 #define __BFAD_IM_H__
  13
  14 #include "bfa_fcs.h"
  15
  16 #define FCPI_NAME " fcpim"
  17
  18 #ifndef KOBJ_NAME_LEN
  19 #define KOBJ_NAME_LEN           20
  20 #endif
  21
  22 bfa_status_t bfad_im_module_init(void);
  23 void bfad_im_module_exit(void);
  24 bfa_status_t bfad_im_probe(struct bfad_s *bfad);
  25 void bfad_im_probe_undo(struct bfad_s *bfad);
  26 bfa_status_t bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port);
  27 void bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port);
  28 void bfad_im_port_clean(struct bfad_im_port_s *im_port);
  29 int  bfad_im_scsi_host_alloc(struct bfad_s *bfad,
  30                 struct bfad_im_port_s *im_port, struct device *dev);
  31 void bfad_im_scsi_host_free(struct bfad_s *bfad,
  32                                 struct bfad_im_port_s *im_port);
  33 u32 bfad_im_supported_speeds(struct bfa_s *bfa);
  34
  35 #define MAX_FCP_TARGET 1024
  36 #define MAX_FCP_LUN 16384
  37 #define BFAD_TARGET_RESET_TMO 60
  38 #define BFAD_LUN_RESET_TMO 60
  39 #define BFA_QUEUE_FULL_RAMP_UP_TIME 120
  40
  41 /*
  42  * itnim flags
  43  */
  44 #define IO_DONE_BIT                     0
  45
  46 struct bfad_itnim_data_s {
  47         struct bfad_itnim_s *itnim;
  48 };
  49
  50 struct bfad_im_port_s {
  51         struct bfad_s         *bfad;
  52         struct bfad_port_s    *port;
  53         struct work_struct port_delete_work;
  54         int             idr_id;
  55         u16        cur_scsi_id;
  56         u16     flags;
  57         struct list_head binding_list;
  58         struct Scsi_Host *shost;
  59         struct list_head itnim_mapped_list;
  60         struct fc_vport *fc_vport;
  61 };
  62
  63 struct bfad_im_port_pointer {
  64         struct bfad_im_port_s *p;
  65 };
  66
  67 static inline struct bfad_im_port_s *bfad_get_im_port(struct Scsi_Host *host)
  68 {
  69         struct bfad_im_port_pointer *im_portp = shost_priv(host);
  70         return im_portp->p;
  71 }
  72
  73 enum bfad_itnim_state {
  74         ITNIM_STATE_NONE,
  75         ITNIM_STATE_ONLINE,
  76         ITNIM_STATE_OFFLINE_PENDING,
  77         ITNIM_STATE_OFFLINE,
  78         ITNIM_STATE_TIMEOUT,
  79         ITNIM_STATE_FREE,
  80 };
  81
  82 /*
  83  * Per itnim data structure
  84  */
  85 struct bfad_itnim_s {
  86         struct list_head list_entry;
  87         struct bfa_fcs_itnim_s fcs_itnim;
  88         struct work_struct itnim_work;
  89         u32        flags;
  90         enum bfad_itnim_state state;
  91         struct bfad_im_s *im;
  92         struct bfad_im_port_s *im_port;
  93         struct bfad_rport_s *drv_rport;
  94         struct fc_rport *fc_rport;
  95         struct bfa_itnim_s *bfa_itnim;
  96         u16        scsi_tgt_id;
  97         u16        channel;
  98         u16        queue_work;
  99         unsigned long   last_ramp_up_time;
 100         unsigned long   last_queue_full_time;
 101 };
 102
 103 enum bfad_binding_type {
 104         FCP_PWWN_BINDING = 0x1,
 105         FCP_NWWN_BINDING = 0x2,
 106         FCP_FCID_BINDING = 0x3,
 107 };
 108
 109 struct bfad_fcp_binding {
 110         struct list_head list_entry;
 111         enum bfad_binding_type binding_type;
 112         u16        scsi_target_id;
 113         u32        fc_id;
 114         wwn_t           nwwn;
 115         wwn_t           pwwn;
 116 };
 117
 118 struct bfad_im_s {
 119         struct bfad_s         *bfad;
 120         struct workqueue_struct *drv_workq;
 121         char            drv_workq_name[KOBJ_NAME_LEN];
 122         struct work_struct      aen_im_notify_work;
 123 };
 124
 125 #define bfad_get_aen_entry(_drv, _entry) do {                           \
 126         unsigned long   _flags;                                         \
 127         spin_lock_irqsave(&(_drv)->bfad_aen_spinlock, _flags);          \
 128         bfa_q_deq(&(_drv)->free_aen_q, &(_entry));                      \
 129         if (_entry)                                                     \
 130                 list_add_tail(&(_entry)->qe, &(_drv)->active_aen_q);    \
 131         spin_unlock_irqrestore(&(_drv)->bfad_aen_spinlock, _flags);     \
 132 } while (0)
 133
 134 /* post fc_host vendor event */
 135 static inline void bfad_im_post_vendor_event(struct bfa_aen_entry_s *entry,
 136                                              struct bfad_s *drv, int cnt,
 137                                              enum bfa_aen_category cat,
 138                                              int evt)
 139 {
 140         struct timespec64 ts;
 141
 142         ktime_get_real_ts64(&ts);
 143         /*
 144          * 'unsigned long aen_tv_sec' overflows in y2106 on 32-bit
 145          * architectures, or in 2038 if user space interprets it
 146          * as 'signed'.
 147          */
 148         entry->aen_tv_sec = ts.tv_sec;
 149         entry->aen_tv_usec = ts.tv_nsec / NSEC_PER_USEC;
 150         entry->bfad_num = drv->inst_no;
 151         entry->seq_num = cnt;
 152         entry->aen_category = cat;
 153         entry->aen_type = evt;
 154         if (drv->bfad_flags & BFAD_FC4_PROBE_DONE)
 155                 queue_work(drv->im->drv_workq, &drv->im->aen_im_notify_work);
 156 }
 157
 158 struct Scsi_Host *bfad_scsi_host_alloc(struct bfad_im_port_s *im_port,
 159                                 struct bfad_s *);
 160 bfa_status_t bfad_thread_workq(struct bfad_s *bfad);
 161 void bfad_destroy_workq(struct bfad_im_s *im);
 162 void bfad_fc_host_init(struct bfad_im_port_s *im_port);
 163 void bfad_scsi_host_free(struct bfad_s *bfad,
 164                                  struct bfad_im_port_s *im_port);
 165 void bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim,
 166                                  struct scsi_device *sdev);
 167 void bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev);
 168 struct bfad_itnim_s *bfad_get_itnim(struct bfad_im_port_s *im_port, int id);
 169
 170 extern struct scsi_host_template bfad_im_scsi_host_template;
 171 extern struct scsi_host_template bfad_im_vport_template;
 172 extern struct fc_function_template bfad_im_fc_function_template;
 173 extern struct fc_function_template bfad_im_vport_fc_function_template;
 174 extern struct scsi_transport_template *bfad_im_scsi_transport_template;
 175 extern struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
 176
 177 extern struct device_attribute *bfad_im_host_attrs[];
 178 extern struct device_attribute *bfad_im_vport_attrs[];
 179
 180 irqreturn_t bfad_intx(int irq, void *dev_id);
 181
 182 int bfad_im_bsg_request(struct bsg_job *job);
 183 int bfad_im_bsg_timeout(struct bsg_job *job);
 184
 185 /*
 186  * Macro to set the SCSI device sdev_bflags - sdev_bflags are used by the
 187  * SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan
 188  *
 189  * Internally iterate's over all the ITNIM's part of the im_port & set's the
 190  * sdev_bflags for the scsi_device associated with LUN #0.
 191  */
 192 #define bfad_reset_sdev_bflags(__im_port, __lunmask_cfg) do {           \
 193         struct scsi_device *__sdev = NULL;                              \
 194         struct bfad_itnim_s *__itnim = NULL;                            \
 195         u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN;           \
 196         list_for_each_entry(__itnim, &((__im_port)->itnim_mapped_list), \
 197                             list_entry) {                               \
 198                 __sdev = scsi_device_lookup((__im_port)->shost,         \
 199                                             __itnim->channel,           \
 200                                             __itnim->scsi_tgt_id, 0);   \
 201                 if (__sdev) {                                           \
 202                         if ((__lunmask_cfg) == BFA_TRUE)                \
 203                                 __sdev->sdev_bflags |= scan_flags;      \
 204                         else                                            \
 205                                 __sdev->sdev_bflags &= ~scan_flags;     \
 206                         scsi_device_put(__sdev);                        \
 207                 }                                                       \
 208         }                                                               \
 209 } while (0)
 210
 211 #endif