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Diffstat (limited to 'drivers/scsi/isci/core/sci_controller.h')
-rw-r--r-- | drivers/scsi/isci/core/sci_controller.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/scsi/isci/core/sci_controller.h b/drivers/scsi/isci/core/sci_controller.h new file mode 100644 index 0000000..26c3548 --- /dev/null +++ b/drivers/scsi/isci/core/sci_controller.h @@ -0,0 +1,100 @@ +/* + * 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. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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. + */ + +#ifndef _SCI_CONTROLLER_H_ +#define _SCI_CONTROLLER_H_ + +/** + * This file contains all of the interface methods that can be called by an SCI + * user on all SCI controller objects. + * + * + */ + + +#include "sci_types.h" + +struct sci_base_memory_descriptor_list; +struct scic_sds_controller; + +#define SCI_CONTROLLER_INVALID_IO_TAG 0xFFFF + +/** + * sci_controller_get_memory_descriptor_list_handle() - This method simply + * returns a handle for the memory descriptor list associated with the + * supplied controller. The descriptor list provides DMA safe/capable + * memory requirements for this controller. + * @controller: This parameter specifies the controller for which to retrieve + * the DMA safe memory descriptor list. + * + * The user must adhere to the alignment requirements specified in memory + * descriptor. In situations where the operating environment does not offer + * memory allocation utilities supporting alignment, then it is the + * responsibility of the user to manually align the memory buffer for SCI. + * Thus, the user may have to allocate a larger buffer to meet the alignment. + * Additionally, the user will need to remember the actual memory allocation + * addresses in order to ensure the memory can be properly freed when necessary + * to do so. This method will return a valid handle, but the MDL may not be + * accurate until after the user has invoked the associated + * sci_controller_initialize() routine. A pointer to a physical memory + * descriptor array. + */ +struct sci_base_memory_descriptor_list * + sci_controller_get_memory_descriptor_list_handle( + struct scic_sds_controller *controller); + + +#endif /* _SCI_CONTROLLER_H_ */ + |