7a3e97b0dc
This patch adds support for Universal Flash Storage(UFS) host controllers. The UFS host controller driver includes host controller initialization method. The Initialization process involves following steps: - Initiate UFS Host Controller initialization process by writing to Host controller enable register - Configure UFS Host controller registers with host memory space datastructure offsets. - Unipro link startup procedure - Check for connected device - Configure UFS host controller to process requests - Enable required interrupts - Configure interrupt aggregation [jejb: fix warnings in 32 bit compile] Signed-off-by: Santosh Yaraganavi <santoshsy@gmail.com> Signed-off-by: Vinayak Holikatti <vinholikatti@gmail.com> Reviewed-by: Arnd Bergmann <arnd@linaro.org> Reviewed-by: Vishak G <vishak.g@samsung.com> Reviewed-by: Girish K S <girish.shivananjappa@linaro.org> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
207 lines
6 KiB
C
207 lines
6 KiB
C
/*
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* Universal Flash Storage Host controller driver
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*
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* This code is based on drivers/scsi/ufs/ufs.h
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* Copyright (C) 2011-2012 Samsung India Software Operations
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*
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* Santosh Yaraganavi <santosh.sy@samsung.com>
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* Vinayak Holikatti <h.vinayak@samsung.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* NO WARRANTY
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* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
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* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
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* solely responsible for determining the appropriateness of using and
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* distributing the Program and assumes all risks associated with its
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* exercise of rights under this Agreement, including but not limited to
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* the risks and costs of program errors, damage to or loss of data,
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* programs or equipment, and unavailability or interruption of operations.
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* DISCLAIMER OF LIABILITY
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* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
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* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#ifndef _UFS_H
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#define _UFS_H
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#define MAX_CDB_SIZE 16
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#define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
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((byte3 << 24) | (byte2 << 16) |\
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(byte1 << 8) | (byte0))
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/*
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* UFS Protocol Information Unit related definitions
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*/
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/* Task management functions */
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enum {
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UFS_ABORT_TASK = 0x01,
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UFS_ABORT_TASK_SET = 0x02,
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UFS_CLEAR_TASK_SET = 0x04,
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UFS_LOGICAL_RESET = 0x08,
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UFS_QUERY_TASK = 0x80,
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UFS_QUERY_TASK_SET = 0x81,
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};
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/* UTP UPIU Transaction Codes Initiator to Target */
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enum {
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UPIU_TRANSACTION_NOP_OUT = 0x00,
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UPIU_TRANSACTION_COMMAND = 0x01,
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UPIU_TRANSACTION_DATA_OUT = 0x02,
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UPIU_TRANSACTION_TASK_REQ = 0x04,
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UPIU_TRANSACTION_QUERY_REQ = 0x26,
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};
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/* UTP UPIU Transaction Codes Target to Initiator */
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enum {
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UPIU_TRANSACTION_NOP_IN = 0x20,
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UPIU_TRANSACTION_RESPONSE = 0x21,
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UPIU_TRANSACTION_DATA_IN = 0x22,
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UPIU_TRANSACTION_TASK_RSP = 0x24,
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UPIU_TRANSACTION_READY_XFER = 0x31,
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UPIU_TRANSACTION_QUERY_RSP = 0x36,
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};
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/* UPIU Read/Write flags */
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enum {
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UPIU_CMD_FLAGS_NONE = 0x00,
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UPIU_CMD_FLAGS_WRITE = 0x20,
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UPIU_CMD_FLAGS_READ = 0x40,
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};
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/* UPIU Task Attributes */
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enum {
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UPIU_TASK_ATTR_SIMPLE = 0x00,
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UPIU_TASK_ATTR_ORDERED = 0x01,
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UPIU_TASK_ATTR_HEADQ = 0x02,
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UPIU_TASK_ATTR_ACA = 0x03,
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};
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/* UTP QUERY Transaction Specific Fields OpCode */
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enum {
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UPIU_QUERY_OPCODE_NOP = 0x0,
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UPIU_QUERY_OPCODE_READ_DESC = 0x1,
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UPIU_QUERY_OPCODE_WRITE_DESC = 0x2,
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UPIU_QUERY_OPCODE_READ_ATTR = 0x3,
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UPIU_QUERY_OPCODE_WRITE_ATTR = 0x4,
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UPIU_QUERY_OPCODE_READ_FLAG = 0x5,
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UPIU_QUERY_OPCODE_SET_FLAG = 0x6,
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UPIU_QUERY_OPCODE_CLEAR_FLAG = 0x7,
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UPIU_QUERY_OPCODE_TOGGLE_FLAG = 0x8,
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};
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/* UTP Transfer Request Command Type (CT) */
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enum {
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UPIU_COMMAND_SET_TYPE_SCSI = 0x0,
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UPIU_COMMAND_SET_TYPE_UFS = 0x1,
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UPIU_COMMAND_SET_TYPE_QUERY = 0x2,
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};
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enum {
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MASK_SCSI_STATUS = 0xFF,
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MASK_TASK_RESPONSE = 0xFF00,
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MASK_RSP_UPIU_RESULT = 0xFFFF,
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};
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/* Task management service response */
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enum {
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UPIU_TASK_MANAGEMENT_FUNC_COMPL = 0x00,
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UPIU_TASK_MANAGEMENT_FUNC_NOT_SUPPORTED = 0x04,
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UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED = 0x08,
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UPIU_TASK_MANAGEMENT_FUNC_FAILED = 0x05,
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UPIU_INCORRECT_LOGICAL_UNIT_NO = 0x09,
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};
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/**
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* struct utp_upiu_header - UPIU header structure
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* @dword_0: UPIU header DW-0
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* @dword_1: UPIU header DW-1
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* @dword_2: UPIU header DW-2
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*/
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struct utp_upiu_header {
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u32 dword_0;
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u32 dword_1;
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u32 dword_2;
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};
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/**
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* struct utp_upiu_cmd - Command UPIU structure
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* @header: UPIU header structure DW-0 to DW-2
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* @data_transfer_len: Data Transfer Length DW-3
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* @cdb: Command Descriptor Block CDB DW-4 to DW-7
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*/
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struct utp_upiu_cmd {
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struct utp_upiu_header header;
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u32 exp_data_transfer_len;
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u8 cdb[MAX_CDB_SIZE];
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};
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/**
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* struct utp_upiu_rsp - Response UPIU structure
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* @header: UPIU header DW-0 to DW-2
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* @residual_transfer_count: Residual transfer count DW-3
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* @reserved: Reserved double words DW-4 to DW-7
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* @sense_data_len: Sense data length DW-8 U16
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* @sense_data: Sense data field DW-8 to DW-12
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*/
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struct utp_upiu_rsp {
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struct utp_upiu_header header;
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u32 residual_transfer_count;
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u32 reserved[4];
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u16 sense_data_len;
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u8 sense_data[18];
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};
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/**
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* struct utp_upiu_task_req - Task request UPIU structure
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* @header - UPIU header structure DW0 to DW-2
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* @input_param1: Input parameter 1 DW-3
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* @input_param2: Input parameter 2 DW-4
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* @input_param3: Input parameter 3 DW-5
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* @reserved: Reserved double words DW-6 to DW-7
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*/
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struct utp_upiu_task_req {
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struct utp_upiu_header header;
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u32 input_param1;
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u32 input_param2;
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u32 input_param3;
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u32 reserved[2];
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};
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/**
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* struct utp_upiu_task_rsp - Task Management Response UPIU structure
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* @header: UPIU header structure DW0-DW-2
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* @output_param1: Ouput parameter 1 DW3
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* @output_param2: Output parameter 2 DW4
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* @reserved: Reserved double words DW-5 to DW-7
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*/
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struct utp_upiu_task_rsp {
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struct utp_upiu_header header;
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u32 output_param1;
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u32 output_param2;
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u32 reserved[3];
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};
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#endif /* End of Header */
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