LXR linux/drivers/scsi/csiostor/csio

   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_LICENSE                "Dual BSD/GPL"
  52#define CSIO_DRV_DESC                   "Chelsio FCoE driver"
  53#define CSIO_DRV_VERSION                "1.0.0"
  54
  55extern struct fc_function_template csio_fc_transport_funcs;
  56extern struct fc_function_template csio_fc_transport_vport_funcs;
  57
  58void csio_fchost_attr_init(struct csio_lnode *);
  59
  60/* INTx handlers */
  61void csio_scsi_intx_handler(struct csio_hw *, void *, uint32_t,
  62                               struct csio_fl_dma_buf *, void *);
  63
  64void csio_fwevt_intx_handler(struct csio_hw *, void *, uint32_t,
  65                                struct csio_fl_dma_buf *, void *);
  66
  67/* Common os lnode APIs */
  68void csio_lnodes_block_request(struct csio_hw *);
  69void csio_lnodes_unblock_request(struct csio_hw *);
  70void csio_lnodes_block_by_port(struct csio_hw *, uint8_t);
  71void csio_lnodes_unblock_by_port(struct csio_hw *, uint8_t);
  72
  73struct csio_lnode *csio_shost_init(struct csio_hw *, struct device *, bool,
  74                                        struct csio_lnode *);
  75void csio_shost_exit(struct csio_lnode *);
  76void csio_lnodes_exit(struct csio_hw *, bool);
  77
  78/* DebugFS helper routines */
  79void csio_add_debugfs_mem(struct csio_hw *, const char *,
  80                unsigned int, unsigned int);
  81
  82static inline struct Scsi_Host *
  83csio_ln_to_shost(struct csio_lnode *ln)
  84{
  85        return container_of((void *)ln, struct Scsi_Host, hostdata[0]);
  86}
  87
  88/* SCSI -- locking version of get/put ioreqs  */
  89static inline struct csio_ioreq *
  90csio_get_scsi_ioreq_lock(struct csio_hw *hw, struct csio_scsim *scsim)
  91{
  92        struct csio_ioreq *ioreq;
  93        unsigned long flags;
  94
  95        spin_lock_irqsave(&scsim->freelist_lock, flags);
  96        ioreq = csio_get_scsi_ioreq(scsim);
  97        spin_unlock_irqrestore(&scsim->freelist_lock, flags);
  98
  99        return ioreq;
 100}
 101
 102static inline void
 103csio_put_scsi_ioreq_lock(struct csio_hw *hw, struct csio_scsim *scsim,
 104                         struct csio_ioreq *ioreq)
 105{
 106        unsigned long flags;
 107
 108        spin_lock_irqsave(&scsim->freelist_lock, flags);
 109        csio_put_scsi_ioreq(scsim, ioreq);
 110        spin_unlock_irqrestore(&scsim->freelist_lock, flags);
 111}
 112
 113/* Called in interrupt context */
 114static inline void
 115csio_put_scsi_ioreq_list_lock(struct csio_hw *hw, struct csio_scsim *scsim,
 116                              struct list_head *reqlist, int n)
 117{
 118        unsigned long flags;
 119
 120        spin_lock_irqsave(&scsim->freelist_lock, flags);
 121        csio_put_scsi_ioreq_list(scsim, reqlist, n);
 122        spin_unlock_irqrestore(&scsim->freelist_lock, flags);
 123}
 124
 125/* Called in interrupt context */
 126static inline void
 127csio_put_scsi_ddp_list_lock(struct csio_hw *hw, struct csio_scsim *scsim,
 128                              struct list_head *reqlist, int n)
 129{
 130        unsigned long flags;
 131
 132        spin_lock_irqsave(&hw->lock, flags);
 133        csio_put_scsi_ddp_list(scsim, reqlist, n);
 134        spin_unlock_irqrestore(&hw->lock, flags);
 135}
 136
 137#endif /* ifndef __CSIO_INIT_H__ */
 138