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_DESC                   "Chelsio FCoE driver"
  52#define CSIO_DRV_VERSION                "1.0.0-ko"
  53
  54extern struct fc_function_template csio_fc_transport_funcs;
  55extern struct fc_function_template csio_fc_transport_vport_funcs;
  56
  57void csio_fchost_attr_init(struct csio_lnode *);
  58
  59/* INTx handlers */
  60void csio_scsi_intx_handler(struct csio_hw *, void *, uint32_t,
  61                               struct csio_fl_dma_buf *, void *);
  62
  63void csio_fwevt_intx_handler(struct csio_hw *, void *, uint32_t,
  64                                struct csio_fl_dma_buf *, void *);
  65
  66/* Common os lnode APIs */
  67void csio_lnodes_block_request(struct csio_hw *);
  68void csio_lnodes_unblock_request(struct csio_hw *);
  69void csio_lnodes_block_by_port(struct csio_hw *, uint8_t);
  70void csio_lnodes_unblock_by_port(struct csio_hw *, uint8_t);
  71
  72struct csio_lnode *csio_shost_init(struct csio_hw *, struct device *, bool,
  73                                        struct csio_lnode *);
  74void csio_shost_exit(struct csio_lnode *);
  75void csio_lnodes_exit(struct csio_hw *, bool);
  76
  77/* DebugFS helper routines */
  78void csio_add_debugfs_mem(struct csio_hw *, const char *,
  79                unsigned int, unsigned int);
  80
  81static inline struct Scsi_Host *
  82csio_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  */
  88static inline struct csio_ioreq *
  89csio_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
 101static inline void
 102csio_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 */
 113static inline void
 114csio_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 */
 125static inline void
 126csio_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__ */
 137