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bfa_aen_entry_s is passed to user space in a netlink message, but is defined using a 'struct timeval' and an 'enum' that are not only different between architectures, but also between 32-bit user space and 64-bit kernels they may run on, as well as depending on the particular C library that defines timeval. This changes the in-kernel definition to no longer use the timeval type directly but instead use two open-coded 'unsigned long' members. This keeps the existing ABI, but making the variable unsigned also helps make it work after y2038, until it overflows in 2106. Since the macro becomes overly complex at this point, I'm changing it to an inline function for readability. I'm not changing the 32-bit user-space ABI at this point, to keep the changes separate, I deally this would be defined using the same binary layout for all architectures. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Anil Gurumurthy <Anil.Gurumurthy@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
211 lines
6.3 KiB
C
211 lines
6.3 KiB
C
/*
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* Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
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* Copyright (c) 2014- QLogic Corporation.
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* All rights reserved
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* www.qlogic.com
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*
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* Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (GPL) Version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#ifndef __BFAD_IM_H__
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#define __BFAD_IM_H__
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#include "bfa_fcs.h"
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#define FCPI_NAME " fcpim"
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#ifndef KOBJ_NAME_LEN
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#define KOBJ_NAME_LEN 20
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#endif
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bfa_status_t bfad_im_module_init(void);
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void bfad_im_module_exit(void);
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bfa_status_t bfad_im_probe(struct bfad_s *bfad);
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void bfad_im_probe_undo(struct bfad_s *bfad);
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bfa_status_t bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port);
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void bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port);
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void bfad_im_port_clean(struct bfad_im_port_s *im_port);
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int bfad_im_scsi_host_alloc(struct bfad_s *bfad,
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struct bfad_im_port_s *im_port, struct device *dev);
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void bfad_im_scsi_host_free(struct bfad_s *bfad,
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struct bfad_im_port_s *im_port);
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u32 bfad_im_supported_speeds(struct bfa_s *bfa);
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#define MAX_FCP_TARGET 1024
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#define MAX_FCP_LUN 16384
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#define BFAD_TARGET_RESET_TMO 60
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#define BFAD_LUN_RESET_TMO 60
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#define ScsiResult(host_code, scsi_code) (((host_code) << 16) | scsi_code)
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#define BFA_QUEUE_FULL_RAMP_UP_TIME 120
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/*
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* itnim flags
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*/
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#define IO_DONE_BIT 0
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struct bfad_itnim_data_s {
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struct bfad_itnim_s *itnim;
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};
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struct bfad_im_port_s {
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struct bfad_s *bfad;
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struct bfad_port_s *port;
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struct work_struct port_delete_work;
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int idr_id;
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u16 cur_scsi_id;
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u16 flags;
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struct list_head binding_list;
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struct Scsi_Host *shost;
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struct list_head itnim_mapped_list;
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struct fc_vport *fc_vport;
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};
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enum bfad_itnim_state {
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ITNIM_STATE_NONE,
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ITNIM_STATE_ONLINE,
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ITNIM_STATE_OFFLINE_PENDING,
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ITNIM_STATE_OFFLINE,
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ITNIM_STATE_TIMEOUT,
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ITNIM_STATE_FREE,
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};
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/*
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* Per itnim data structure
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*/
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struct bfad_itnim_s {
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struct list_head list_entry;
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struct bfa_fcs_itnim_s fcs_itnim;
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struct work_struct itnim_work;
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u32 flags;
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enum bfad_itnim_state state;
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struct bfad_im_s *im;
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struct bfad_im_port_s *im_port;
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struct bfad_rport_s *drv_rport;
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struct fc_rport *fc_rport;
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struct bfa_itnim_s *bfa_itnim;
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u16 scsi_tgt_id;
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u16 channel;
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u16 queue_work;
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unsigned long last_ramp_up_time;
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unsigned long last_queue_full_time;
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};
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enum bfad_binding_type {
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FCP_PWWN_BINDING = 0x1,
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FCP_NWWN_BINDING = 0x2,
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FCP_FCID_BINDING = 0x3,
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};
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struct bfad_fcp_binding {
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struct list_head list_entry;
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enum bfad_binding_type binding_type;
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u16 scsi_target_id;
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u32 fc_id;
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wwn_t nwwn;
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wwn_t pwwn;
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};
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struct bfad_im_s {
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struct bfad_s *bfad;
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struct workqueue_struct *drv_workq;
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char drv_workq_name[KOBJ_NAME_LEN];
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struct work_struct aen_im_notify_work;
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};
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#define bfad_get_aen_entry(_drv, _entry) do { \
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unsigned long _flags; \
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spin_lock_irqsave(&(_drv)->bfad_aen_spinlock, _flags); \
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bfa_q_deq(&(_drv)->free_aen_q, &(_entry)); \
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if (_entry) \
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list_add_tail(&(_entry)->qe, &(_drv)->active_aen_q); \
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spin_unlock_irqrestore(&(_drv)->bfad_aen_spinlock, _flags); \
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} while (0)
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/* post fc_host vendor event */
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static inline void bfad_im_post_vendor_event(struct bfa_aen_entry_s *entry,
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struct bfad_s *drv, int cnt,
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enum bfa_aen_category cat,
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enum bfa_ioc_aen_event evt)
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{
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struct timespec64 ts;
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ktime_get_real_ts64(&ts);
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/*
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* 'unsigned long aen_tv_sec' overflows in y2106 on 32-bit
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* architectures, or in 2038 if user space interprets it
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* as 'signed'.
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*/
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entry->aen_tv_sec = ts.tv_sec;
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entry->aen_tv_usec = ts.tv_nsec / NSEC_PER_USEC;
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entry->bfad_num = drv->inst_no;
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entry->seq_num = cnt;
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entry->aen_category = cat;
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entry->aen_type = evt;
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if (drv->bfad_flags & BFAD_FC4_PROBE_DONE)
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queue_work(drv->im->drv_workq, &drv->im->aen_im_notify_work);
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}
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struct Scsi_Host *bfad_scsi_host_alloc(struct bfad_im_port_s *im_port,
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struct bfad_s *);
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bfa_status_t bfad_thread_workq(struct bfad_s *bfad);
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void bfad_destroy_workq(struct bfad_im_s *im);
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void bfad_fc_host_init(struct bfad_im_port_s *im_port);
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void bfad_scsi_host_free(struct bfad_s *bfad,
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struct bfad_im_port_s *im_port);
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void bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim,
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struct scsi_device *sdev);
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void bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev);
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struct bfad_itnim_s *bfad_get_itnim(struct bfad_im_port_s *im_port, int id);
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extern struct scsi_host_template bfad_im_scsi_host_template;
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extern struct scsi_host_template bfad_im_vport_template;
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extern struct fc_function_template bfad_im_fc_function_template;
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extern struct fc_function_template bfad_im_vport_fc_function_template;
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extern struct scsi_transport_template *bfad_im_scsi_transport_template;
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extern struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
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extern struct device_attribute *bfad_im_host_attrs[];
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extern struct device_attribute *bfad_im_vport_attrs[];
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irqreturn_t bfad_intx(int irq, void *dev_id);
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int bfad_im_bsg_request(struct bsg_job *job);
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int bfad_im_bsg_timeout(struct bsg_job *job);
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/*
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* Macro to set the SCSI device sdev_bflags - sdev_bflags are used by the
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* SCSI mid-layer to choose LUN Scanning mode REPORT_LUNS vs. Sequential Scan
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*
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* Internally iterate's over all the ITNIM's part of the im_port & set's the
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* sdev_bflags for the scsi_device associated with LUN #0.
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*/
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#define bfad_reset_sdev_bflags(__im_port, __lunmask_cfg) do { \
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struct scsi_device *__sdev = NULL; \
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struct bfad_itnim_s *__itnim = NULL; \
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u32 scan_flags = BLIST_NOREPORTLUN | BLIST_SPARSELUN; \
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list_for_each_entry(__itnim, &((__im_port)->itnim_mapped_list), \
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list_entry) { \
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__sdev = scsi_device_lookup((__im_port)->shost, \
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__itnim->channel, \
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__itnim->scsi_tgt_id, 0); \
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if (__sdev) { \
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if ((__lunmask_cfg) == BFA_TRUE) \
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__sdev->sdev_bflags |= scan_flags; \
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else \
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__sdev->sdev_bflags &= ~scan_flags; \
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scsi_device_put(__sdev); \
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} \
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} \
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} while (0)
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#endif
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