root/drivers/scsi/csiostor/csio_init.h

INCLUDED FROM

DEFINITIONS

1. csio_ln_to_shost
2. csio_get_scsi_ioreq_lock
3. csio_put_scsi_ioreq_lock
4. csio_put_scsi_ioreq_list_lock
5. csio_put_scsi_ddp_list_lock

   1 /*
   2  * This file is part of the Chelsio FCoE driver for Linux.
   3  *
   4  * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  */
  34 
  35 #ifndef __CSIO_INIT_H__
  36 #define __CSIO_INIT_H__
  37 
  38 #include <linux/pci.h>
  39 #include <linux/if_ether.h>
  40 #include <scsi/scsi.h>
  41 #include <scsi/scsi_device.h>
  42 #include <scsi/scsi_host.h>
  43 #include <scsi/scsi_transport_fc.h>
  44 
  45 #include "csio_scsi.h"
  46 #include "csio_lnode.h"
  47 #include "csio_rnode.h"
  48 #include "csio_hw.h"
  49 
  50 #define CSIO_DRV_AUTHOR                 "Chelsio Communications"
  51 #define CSIO_DRV_DESC                   "Chelsio FCoE driver"
  52 #define CSIO_DRV_VERSION                "1.0.0-ko"
  53 
  54 extern struct fc_function_template csio_fc_transport_funcs;
  55 extern struct fc_function_template csio_fc_transport_vport_funcs;
  56 
  57 void csio_fchost_attr_init(struct csio_lnode *);
  58 
  59 /* INTx handlers */
  60 void csio_scsi_intx_handler(struct csio_hw *, void *, uint32_t,
  61                                struct csio_fl_dma_buf *, void *);
  62 
  63 void csio_fwevt_intx_handler(struct csio_hw *, void *, uint32_t,
  64                                 struct csio_fl_dma_buf *, void *);
  65 
  66 /* Common os lnode APIs */
  67 void csio_lnodes_block_request(struct csio_hw *);
  68 void csio_lnodes_unblock_request(struct csio_hw *);
  69 void csio_lnodes_block_by_port(struct csio_hw *, uint8_t);
  70 void csio_lnodes_unblock_by_port(struct csio_hw *, uint8_t);
  71 
  72 struct csio_lnode *csio_shost_init(struct csio_hw *, struct device *, bool,
  73                                         struct csio_lnode *);
  74 void csio_shost_exit(struct csio_lnode *);
  75 void csio_lnodes_exit(struct csio_hw *, bool);
  76 
  77 /* DebugFS helper routines */
  78 void csio_add_debugfs_mem(struct csio_hw *, const char *,
  79                 unsigned int, unsigned int);
  80 
  81 static inline struct Scsi_Host *
  82 csio_ln_to_shost(struct csio_lnode *ln)
  83 {
  84         return container_of((void *)ln, struct Scsi_Host, hostdata[0]);
  85 }
  86 
  87 /* SCSI -- locking version of get/put ioreqs  */
  88 static inline struct csio_ioreq *
  89 csio_get_scsi_ioreq_lock(struct csio_hw *hw, struct csio_scsim *scsim)
  90 {
  91         struct csio_ioreq *ioreq;
  92         unsigned long flags;
  93 
  94         spin_lock_irqsave(&scsim->freelist_lock, flags);
  95         ioreq = csio_get_scsi_ioreq(scsim);
  96         spin_unlock_irqrestore(&scsim->freelist_lock, flags);
  97 
  98         return ioreq;
  99 }
 100 
 101 static inline void
 102 csio_put_scsi_ioreq_lock(struct csio_hw *hw, struct csio_scsim *scsim,
 103                          struct csio_ioreq *ioreq)
 104 {
 105         unsigned long flags;
 106 
 107         spin_lock_irqsave(&scsim->freelist_lock, flags);
 108         csio_put_scsi_ioreq(scsim, ioreq);
 109         spin_unlock_irqrestore(&scsim->freelist_lock, flags);
 110 }
 111 
 112 /* Called in interrupt context */
 113 static inline void
 114 csio_put_scsi_ioreq_list_lock(struct csio_hw *hw, struct csio_scsim *scsim,
 115                               struct list_head *reqlist, int n)
 116 {
 117         unsigned long flags;
 118 
 119         spin_lock_irqsave(&scsim->freelist_lock, flags);
 120         csio_put_scsi_ioreq_list(scsim, reqlist, n);
 121         spin_unlock_irqrestore(&scsim->freelist_lock, flags);
 122 }
 123 
 124 /* Called in interrupt context */
 125 static inline void
 126 csio_put_scsi_ddp_list_lock(struct csio_hw *hw, struct csio_scsim *scsim,
 127                               struct list_head *reqlist, int n)
 128 {
 129         unsigned long flags;
 130 
 131         spin_lock_irqsave(&hw->lock, flags);
 132         csio_put_scsi_ddp_list(scsim, reqlist, n);
 133         spin_unlock_irqrestore(&hw->lock, flags);
 134 }
 135 
 136 #endif /* ifndef __CSIO_INIT_H__ */