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Miller" , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org From: Radu Alexe Order preservation is a feature that will be supported in dpni, dpseci and dpci devices. This is a preliminary patch for the changes to be introduced in the corresponding drivers. Signed-off-by: Radu Alexe Signed-off-by: Horia Geantă --- drivers/staging/fsl-mc/include/dpopr.h | 110 +++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 drivers/staging/fsl-mc/include/dpopr.h diff --git a/drivers/staging/fsl-mc/include/dpopr.h b/drivers/staging/fsl-mc/include/dpopr.h new file mode 100644 index 000000000000..e1110af2fe54 --- /dev/null +++ b/drivers/staging/fsl-mc/include/dpopr.h @@ -0,0 +1,110 @@ +/* + * Copyright 2017 NXP + * + * 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 the above-listed copyright holders nor the + * names of any contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * 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 HOLDERS 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 __FSL_DPOPR_H_ +#define __FSL_DPOPR_H_ + +/* Data Path Order Restoration API + * Contains initialization APIs and runtime APIs for the Order Restoration + */ + +/** Order Restoration properties */ + +/** + * Create a new Order Point Record option + */ +#define OPR_OPT_CREATE 0x1 +/** + * Retire an existing Order Point Record option + */ +#define OPR_OPT_RETIRE 0x2 + +/** + * struct opr_cfg - Structure representing OPR configuration + * @oprrws: Order point record (OPR) restoration window size (0 to 5) + * 0 - Window size is 32 frames. + * 1 - Window size is 64 frames. + * 2 - Window size is 128 frames. + * 3 - Window size is 256 frames. + * 4 - Window size is 512 frames. + * 5 - Window size is 1024 frames. + * @oa: OPR auto advance NESN window size (0 disabled, 1 enabled) + * @olws: OPR acceptable late arrival window size (0 to 3) + * 0 - Disabled. Late arrivals are always rejected. + * 1 - Window size is 32 frames. + * 2 - Window size is the same as the OPR restoration + * window size configured in the OPRRWS field. + * 3 - Window size is 8192 frames. Late arrivals are + * always accepted. + * @oeane: Order restoration list (ORL) resource exhaustion + * advance NESN enable (0 disabled, 1 enabled) + * @oloe: OPR loose ordering enable (0 disabled, 1 enabled) + */ +struct opr_cfg { + u8 oprrws; + u8 oa; + u8 olws; + u8 oeane; + u8 oloe; +}; + +/** + * struct opr_qry - Structure representing OPR configuration + * @enable: Enabled state + * @rip: Retirement In Progress + * @ndsn: Next dispensed sequence number + * @nesn: Next expected sequence number + * @ea_hseq: Early arrival head sequence number + * @hseq_nlis: HSEQ not last in sequence + * @ea_tseq: Early arrival tail sequence number + * @tseq_nlis: TSEQ not last in sequence + * @ea_tptr: Early arrival tail pointer + * @ea_hptr: Early arrival head pointer + * @opr_id: Order Point Record ID + * @opr_vid: Order Point Record Virtual ID + */ +struct opr_qry { + char enable; + char rip; + u16 ndsn; + u16 nesn; + u16 ea_hseq; + char hseq_nlis; + u16 ea_tseq; + char tseq_nlis; + u16 ea_tptr; + u16 ea_hptr; + u16 opr_id; + u16 opr_vid; +}; + +#endif /* __FSL_DPOPR_H_ */