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
  63 static inline struct device *scic_to_dev(struct scic_sds_controller *scic)
  64 {
  65         struct isci_host *isci_host = scic->ihost;
  66
  67         return &isci_host->pdev->dev;
  68 }
  69
  70 static inline struct device *sciphy_to_dev(struct scic_sds_phy *sci_phy)
  71 {
  72         struct isci_phy *iphy = sci_phy->iphy;
  73
  74         if (!iphy || !iphy->isci_port || !iphy->isci_port->isci_host)
  75                 return NULL;
  76
  77         return &iphy->isci_port->isci_host->pdev->dev;
  78 }
  79
  80 static inline struct device *sciport_to_dev(struct scic_sds_port *sci_port)
  81 {
  82         struct isci_port *iport = sci_port->iport;
  83
  84         if (!iport || !iport->isci_host)
  85                 return NULL;
  86
  87         return &iport->isci_host->pdev->dev;
  88 }
  89
  90 static inline struct device *scirdev_to_dev(
  91                 struct scic_sds_remote_device *sci_dev)
  92 {
  93         struct isci_remote_device *idev =
  94                         container_of(sci_dev, typeof(*idev), sci);
  95
  96         if (!idev || !idev->isci_port || !idev->isci_port->isci_host)
  97                 return NULL;
  98
  99         return &idev->isci_port->isci_host->pdev->dev;
 100 }
 101
 102 enum {
 103         ISCI_SI_REVA0,
 104         ISCI_SI_REVA2,
 105         ISCI_SI_REVB0,
 106 };
 107
 108 extern int isci_si_rev;
 109
 110 static inline bool is_a0(void)
 111 {
 112         return isci_si_rev == ISCI_SI_REVA0;
 113 }
 114
 115 static inline bool is_a2(void)
 116 {
 117         return isci_si_rev == ISCI_SI_REVA2;
 118 }
 119
 120 static inline bool is_b0(void)
 121 {
 122         return isci_si_rev > ISCI_SI_REVA2;
 123 }
 124
 125 #endif