FreeBSD/Linux Kernel Cross Reference
sys/dev/isci/scil/scic_sds_library.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
      *
      * This file is provided under a dual BSD/GPLv2 license.  When using or
      * redistributing this file, you may do so under either license.
      *
      * GPL LICENSE SUMMARY
      *
      * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
     *
     * This program is free software; you can redistribute it and/or modify
     * it under the terms of version 2 of the GNU General Public License as
     * published by the Free Software Foundation.
     *
     * This program is distributed in the hope that it will be useful, but
     * WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
     * The full GNU General Public License is included in this distribution
     * in the file called LICENSE.GPL.
     *
     * BSD LICENSE
     *
     * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     *
     *   * Redistributions of source code must retain the above copyright
     *     notice, this list of conditions and the following disclaimer.
     *   * Redistributions in binary form must reproduce the above copyright
     *     notice, this list of conditions and the following disclaimer in
     *     the documentation and/or other materials provided with the
     *     distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    /**
     * @file
     *
     * @brief This file contains the implementation of the public methods for a
     *        SCIC_SDS_LIBRARY object.
     */
    
    #include <dev/isci/scil/scic_library.h>
    #include <dev/isci/scil/scic_sds_library.h>
    #include <dev/isci/scil/scic_sds_controller.h>
    #include <dev/isci/scil/scic_sds_request.h>
    #include <dev/isci/scil/scic_sds_remote_device.h>
    #include <dev/isci/scil/intel_pci.h>
    #include <dev/isci/scil/scic_sds_pci.h>
    #include <dev/isci/scil/scu_constants.h>
    
    struct SCIC_SDS_CONTROLLER;
    
    #define SCIC_LIBRARY_CONTROLLER_MEMORY_START(library) \
       ((char *)(library) + sizeof(SCIC_SDS_LIBRARY_T))
    
    // ---------------------------------------------------------------------------
    
    U32 scic_library_get_object_size(
       U8 max_controller_count
    )
    {
       return   sizeof(SCIC_SDS_LIBRARY_T)
              + scic_sds_controller_get_object_size() * max_controller_count;
    }
    
    // ---------------------------------------------------------------------------
    
    SCI_LIBRARY_HANDLE_T scic_library_construct(
       void                    * library_memory,
       U8                        max_controller_count
    )
    {
       SCI_STATUS status;
       SCIC_SDS_LIBRARY_T *this_library;
    
       this_library = (SCIC_SDS_LIBRARY_T *)library_memory;
   
      this_library->max_controller_count = max_controller_count;
   
      this_library->controllers =
         (SCIC_SDS_CONTROLLER_T *)((char *)library_memory + sizeof(SCIC_SDS_LIBRARY_T));
   
      SCI_BASE_LIBRARY_CONSTRUCT(this_library,
                                 &this_library->parent,
                                 max_controller_count,
                                 struct SCIC_SDS_CONTROLLER,
                                 status);
      return this_library;
   }
   
   // ---------------------------------------------------------------------------
   
   void scic_library_set_pci_info(
      SCI_LIBRARY_HANDLE_T      library,
      SCI_PCI_COMMON_HEADER_T * pci_header
   )
   {
      SCIC_SDS_LIBRARY_T *this_library;
      this_library = (SCIC_SDS_LIBRARY_T *)library;
   
      this_library->pci_device   = pci_header->device_id;
   
   #if defined(PBG_HBA_A0_BUILD)
      this_library->pci_revision = SCIC_SDS_PCI_REVISION_A0;
   #elif defined(PBG_HBA_A2_BUILD)
      this_library->pci_revision = SCIC_SDS_PCI_REVISION_A2;
   #elif defined(PBG_HBA_BETA_BUILD)
      this_library->pci_revision = SCIC_SDS_PCI_REVISION_B0;
   #elif defined(PBG_BUILD)
      // The SCU PCI function revision ID for A0/A2 is not populated
      // properly.  As a result, we force the revision ID to A2 for
      // this situation.  Therefore, the standard PBG build will not
      // work for A0.
      if (pci_header->revision == SCIC_SDS_PCI_REVISION_A0)
         this_library->pci_revision = SCIC_SDS_PCI_REVISION_A2;
      else
         this_library->pci_revision = pci_header->revision;
   #endif
   }
   
   // ---------------------------------------------------------------------------
   
   SCI_STATUS scic_library_allocate_controller(
      SCI_LIBRARY_HANDLE_T    library,
      SCI_CONTROLLER_HANDLE_T *new_controller
   )
   {
      SCI_STATUS status;
      SCIC_SDS_LIBRARY_T *this_library;
   
      this_library = (SCIC_SDS_LIBRARY_T *)library;
   
      if (
            (  (this_library->pci_device >= 0x1D60)
            && (this_library->pci_device <= 0x1D62)
            )
         || (  (this_library->pci_device >= 0x1D64)
            && (this_library->pci_device <= 0x1D65)
            )
         || (  (this_library->pci_device >= 0x1D68)
            && (this_library->pci_device <= 0x1D6F)
            )
         )
      {
         SCI_BASE_LIBRARY_ALLOCATE_CONTROLLER(
            this_library, new_controller, &status);
      }
      else
         status = SCI_FAILURE_UNSUPPORTED_PCI_DEVICE_ID;
   
      return status;
   }
   
   // ---------------------------------------------------------------------------
   
   SCI_STATUS scic_library_free_controller(
      SCI_LIBRARY_HANDLE_T library,
      SCI_CONTROLLER_HANDLE_T controller
   )
   {
      SCI_STATUS status;
      SCIC_SDS_LIBRARY_T *this_library;
      this_library = (SCIC_SDS_LIBRARY_T *)library;
   
      SCI_BASE_LIBRARY_FREE_CONTROLLER(
         this_library, controller, struct SCIC_SDS_CONTROLLER, &status);
   
      return status;
   }
   
   // ---------------------------------------------------------------------------
   
   U8 scic_library_get_pci_device_controller_count(
      SCI_LIBRARY_HANDLE_T library
   )
   {
      SCIC_SDS_LIBRARY_T *this_library;
      U16 device_id;
   
      this_library = (SCIC_SDS_LIBRARY_T *)library;
      device_id = this_library->pci_device;
   
      //Check if we are on a b0 or c0 which has 2 controllers
      if (
            // Warning: If 0x1d66 is ever defined to be a single controller
            //          this logic will fail.
            //          If 0x1d63 or 0x1d67 is ever defined to be dual
            //          controller this logic will fail.
            ((device_id & 0xFFF1) == 0x1D60)
         && (
               (this_library->pci_revision == SCU_PBG_HBA_REV_B0)
            || (this_library->pci_revision == SCU_PBG_HBA_REV_C0)
            || (this_library->pci_revision == SCU_PBG_HBA_REV_C1)
            )
         )
         return 2;
      else
         return 1;
   }
   
   // ---------------------------------------------------------------------------
   
   U32 scic_library_get_max_sge_size(
      SCI_LIBRARY_HANDLE_T library
   )
   {
      return SCU_IO_REQUEST_MAX_SGE_SIZE;
   }
   
   // ---------------------------------------------------------------------------
   
   U32 scic_library_get_max_sge_count(
      SCI_LIBRARY_HANDLE_T library
   )
   {
      return SCU_IO_REQUEST_SGE_COUNT;
   }
   
   // ---------------------------------------------------------------------------
   
   U32 scic_library_get_max_io_length(
      SCI_LIBRARY_HANDLE_T library
   )
   {
      return SCU_IO_REQUEST_MAX_TRANSFER_LENGTH;
   }
   
   // ---------------------------------------------------------------------------
   
   U16 scic_library_get_min_timer_count(void)
   {
      return (U16) (scic_sds_controller_get_min_timer_count()
                  + scic_sds_remote_device_get_min_timer_count()
                  + scic_sds_request_get_min_timer_count());
   }
   
   // ---------------------------------------------------------------------------
   
   U16 scic_library_get_max_timer_count(void)
   {
      return (U16) (scic_sds_controller_get_max_timer_count()
                  + scic_sds_remote_device_get_max_timer_count()
                  + scic_sds_request_get_max_timer_count());
   }
   
   /**
    *
    */
   U8 scic_sds_library_get_controller_index(
      SCIC_SDS_LIBRARY_T    * library,
      SCIC_SDS_CONTROLLER_T * controller
   )
   {
      U8 index;
   
      for (index = 0; index < library->max_controller_count; index++)
      {
         if (controller == &library->controllers[index])
         {
            return index;
         }
      }
   
      return 0xff;
   }
   

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