drivers/scsi/isci/sci_environment.h

   1 /*
   2  * This file is provided under a dual BSD/GPLv2 license.  When using or
   3  * redistributing this file, you may do so under either license.
   4  *
   5  * GPL LICENSE SUMMARY
   6  *
   7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of version 2 of the GNU General Public License as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called LICENSE.GPL.
  23  *
  24  * BSD LICENSE
  25  *
  26  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
  27  * All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  *
  33  *   * Redistributions of source code must retain the above copyright
  34  *     notice, this list of conditions and the following disclaimer.
  35  *   * Redistributions in binary form must reproduce the above copyright
  36  *     notice, this list of conditions and the following disclaimer in
  37  *     the documentation and/or other materials provided with the
  38  *     distribution.
  39  *   * Neither the name of Intel Corporation nor the names of its
  40  *     contributors may be used to endorse or promote products derived
  41  *     from this software without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  44  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  45  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  46  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  47  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  48  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  49  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  50  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  51  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  52  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  53  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  54  */
  55
  56 #ifndef _SCI_ENVIRONMENT_H_
  57 #define _SCI_ENVIRONMENT_H_
  58
  59 #include "isci.h"
  60 #include "core/scic_sds_controller.h"
  61
  62 struct scic_sds_controller;
  63 struct scic_sds_phy;
  64 struct scic_sds_port;
  65 struct scic_sds_remote_device;
  66
  67 static inline struct device *scic_to_dev(struct scic_sds_controller *scic)
  68 {
  69         struct isci_host *isci_host = scic->ihost;
  70
  71         return &isci_host->pdev->dev;
  72 }
  73
  74 static inline struct device *sciphy_to_dev(struct scic_sds_phy *sci_phy)
  75 {
  76         struct isci_phy *iphy = sci_phy->iphy;
  77
  78         if (!iphy || !iphy->isci_port || !iphy->isci_port->isci_host)
  79                 return NULL;
  80
  81         return &iphy->isci_port->isci_host->pdev->dev;
  82 }
  83
  84 static inline struct device *sciport_to_dev(struct scic_sds_port *sci_port)
  85 {
  86         struct isci_port *iport = sci_object_get_association(sci_port);
  87
  88         if (!iport || !iport->isci_host)
  89                 return NULL;
  90
  91         return &iport->isci_host->pdev->dev;
  92 }
  93
  94 static inline struct device *scirdev_to_dev(struct scic_sds_remote_device *sci_dev)
  95 {
  96         struct isci_remote_device *idev = sci_object_get_association(sci_dev);
  97
  98         if (!idev || !idev->isci_port || !idev->isci_port->isci_host)
  99                 return NULL;
 100
 101         return &idev->isci_port->isci_host->pdev->dev;
 102 }
 103
 104 enum {
 105         ISCI_SI_REVA0,
 106         ISCI_SI_REVA2,
 107         ISCI_SI_REVB0,
 108 };
 109
 110 extern int isci_si_rev;
 111
 112 static inline bool is_a0(void)
 113 {
 114         return isci_si_rev == ISCI_SI_REVA0;
 115 }
 116
 117 static inline bool is_a2(void)
 118 {
 119         return isci_si_rev == ISCI_SI_REVA2;
 120 }
 121
 122 static inline bool is_b0(void)
 123 {
 124         return isci_si_rev > ISCI_SI_REVA2;
 125 }
 126
 127 #endif