--- /dev/null
+/*
+ * 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 _SCIC_SDS_UNSOLICITED_FRAME_CONTROL_H_
+#define _SCIC_SDS_UNSOLICITED_FRAME_CONTROL_H_
+
+#include "isci.h"
+
+#define SCU_UNSOLICITED_FRAME_HEADER_DATA_DWORDS 15
+
+/**
+ * struct scu_unsolicited_frame_header -
+ *
+ * This structure delineates the format of an unsolicited frame header. The
+ * first DWORD are UF attributes defined by the silicon architecture. The data
+ * depicts actual header information received on the link.
+ */
+struct scu_unsolicited_frame_header {
+ /**
+ * This field indicates if there is an Initiator Index Table entry with
+ * which this header is associated.
+ */
+ u32 iit_exists:1;
+
+ /**
+ * This field simply indicates the protocol type (i.e. SSP, STP, SMP).
+ */
+ u32 protocol_type:3;
+
+ /**
+ * This field indicates if the frame is an address frame (IAF or OAF)
+ * or if it is a information unit frame.
+ */
+ u32 is_address_frame:1;
+
+ /**
+ * This field simply indicates the connection rate at which the frame
+ * was received.
+ */
+ u32 connection_rate:4;
+
+ u32 reserved:23;
+
+ /**
+ * This field represents the actual header data received on the link.
+ */
+ u32 data[SCU_UNSOLICITED_FRAME_HEADER_DATA_DWORDS];
+
+};
+
+
+
+/**
+ * enum unsolicited_frame_state -
+ *
+ * This enumeration represents the current unsolicited frame state. The
+ * controller object can not updtate the hardware unsolicited frame put pointer
+ * unless it has already processed the priror unsolicited frames.
+ */
+enum unsolicited_frame_state {
+ /**
+ * This state is when the frame is empty and not in use. It is
+ * different from the released state in that the hardware could DMA
+ * data to this frame buffer.
+ */
+ UNSOLICITED_FRAME_EMPTY,
+
+ /**
+ * This state is set when the frame buffer is in use by by some
+ * object in the system.
+ */
+ UNSOLICITED_FRAME_IN_USE,
+
+ /**
+ * This state is set when the frame is returned to the free pool
+ * but one or more frames prior to this one are still in use.
+ * Once all of the frame before this one are freed it will go to
+ * the empty state.
+ */
+ UNSOLICITED_FRAME_RELEASED,
+
+ UNSOLICITED_FRAME_MAX_STATES
+};
+
+/**
+ * struct sci_unsolicited_frame -
+ *
+ * This is the unsolicited frame data structure it acts as the container for
+ * the current frame state, frame header and frame buffer.
+ */
+struct sci_unsolicited_frame {
+ /**
+ * This field contains the current frame state
+ */
+ enum unsolicited_frame_state state;
+
+ /**
+ * This field points to the frame header data.
+ */
+ struct scu_unsolicited_frame_header *header;
+
+ /**
+ * This field points to the frame buffer data.
+ */
+ void *buffer;
+
+};
+
+/**
+ * struct sci_uf_header_array -
+ *
+ * This structure contains all of the unsolicited frame header information.
+ */
+struct sci_uf_header_array {
+ /**
+ * This field is represents a virtual pointer to the start
+ * address of the UF address table. The table contains
+ * 64-bit pointers as required by the hardware.
+ */
+ struct scu_unsolicited_frame_header *array;
+
+ /**
+ * This field specifies the physical address location for the UF
+ * buffer array.
+ */
+ dma_addr_t physical_address;
+
+};
+
+/**
+ * struct sci_uf_buffer_array -
+ *
+ * This structure contains all of the unsolicited frame buffer (actual payload)
+ * information.
+ */
+struct sci_uf_buffer_array {
+ /**
+ * This field is the unsolicited frame data its used to manage
+ * the data for the unsolicited frame requests. It also represents
+ * the virtual address location that corresponds to the
+ * physical_address field.
+ */
+ struct sci_unsolicited_frame array[SCU_MAX_UNSOLICITED_FRAMES];
+
+ /**
+ * This field specifies the physical address location for the UF
+ * buffer array.
+ */
+ dma_addr_t physical_address;
+};
+
+/**
+ * struct sci_uf_address_table_array -
+ *
+ * This object maintains all of the unsolicited frame address table specific
+ * data. The address table is a collection of 64-bit pointers that point to
+ * 1KB buffers into which the silicon will DMA unsolicited frames.
+ */
+struct sci_uf_address_table_array {
+ /**
+ * This field represents a virtual pointer that refers to the
+ * starting address of the UF address table.
+ * 64-bit pointers are required by the hardware.
+ */
+ u64 *array;
+
+ /**
+ * This field specifies the physical address location for the UF
+ * address table.
+ */
+ dma_addr_t physical_address;
+
+};
+
+/**
+ * struct sci_unsolicited_frame_control -
+ *
+ * This object contains all of the data necessary to handle unsolicited frames.
+ */
+struct sci_unsolicited_frame_control {
+ /**
+ * This field is the software copy of the unsolicited frame queue
+ * get pointer. The controller object writes this value to the
+ * hardware to let the hardware put more unsolicited frame entries.
+ */
+ u32 get;
+
+ /**
+ * This field contains all of the unsolicited frame header
+ * specific fields.
+ */
+ struct sci_uf_header_array headers;
+
+ /**
+ * This field contains all of the unsolicited frame buffer
+ * specific fields.
+ */
+ struct sci_uf_buffer_array buffers;
+
+ /**
+ * This field contains all of the unsolicited frame address table
+ * specific fields.
+ */
+ struct sci_uf_address_table_array address_table;
+
+};
+
+#define SCI_UFI_BUF_SIZE (SCU_MAX_UNSOLICITED_FRAMES * SCU_UNSOLICITED_FRAME_BUFFER_SIZE)
+#define SCI_UFI_HDR_SIZE (SCU_MAX_UNSOLICITED_FRAMES * sizeof(struct scu_unsolicited_frame_header))
+#define SCI_UFI_TOTAL_SIZE (SCI_UFI_BUF_SIZE + SCI_UFI_HDR_SIZE + SCU_MAX_UNSOLICITED_FRAMES * sizeof(u64))
+
+struct isci_host;
+
+void sci_unsolicited_frame_control_construct(struct isci_host *ihost);
+
+enum sci_status sci_unsolicited_frame_control_get_header(
+ struct sci_unsolicited_frame_control *uf_control,
+ u32 frame_index,
+ void **frame_header);
+
+enum sci_status sci_unsolicited_frame_control_get_buffer(
+ struct sci_unsolicited_frame_control *uf_control,
+ u32 frame_index,
+ void **frame_buffer);
+
+bool sci_unsolicited_frame_control_release_frame(
+ struct sci_unsolicited_frame_control *uf_control,
+ u32 frame_index);
+
+#endif /* _SCIC_SDS_UNSOLICITED_FRAME_CONTROL_H_ */
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