On 09-04-19, 15:22, Peng Ma wrote:
Subject missed PATCH tag!
> The MC exports the DPDMAI object as an interface to operate the DPAA2 QDMA
whats MC, DPDMAI, DPAA2
> Engine. The DPDMAI enables sending frame-based requests to QDMA and receiving
> back confirmation response on transaction completion, utilizing the DPAA2
> QBMan
> infrastructure. DPDMAI object provides up to two priorities for processing
> QDMA
> requests.
> +int dpdmai_open(struct fsl_mc_io *mc_io,
> + u32 cmd_flags,
> + int dpdmai_id,
> + u16 *token)
could be written as:
int dpdmai_open(struct fsl_mc_io *mc_io, u32 cmd_flags,
int dpdmai_id, u16 *token)
Looks neater, right? It would be to reread coding guidelines and run
checkpatch with --strict on this
> +{
> + struct fsl_mc_command cmd = { 0 };
where is this defined?
> + struct dpdmai_cmd_open *cmd_params;
> + int err;
> +
> + /* prepare command */
> + cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_OPEN,
> + cmd_flags,
> + 0);
> +
> + cmd_params = (struct dpdmai_cmd_open *)cmd.params;
I dont like casts, can you explain
> + cmd_params->dpdmai_id = cpu_to_le32(dpdmai_id);
> +
> + /* send command to mc*/
> + err = mc_send_command(mc_io, &cmd);
> + if (err)
> + return err;
> +
> + /* retrieve response parameters */
> + *token = mc_cmd_hdr_read_token(&cmd);
> + return 0;
> +}
who will call this API?
> +int dpdmai_create(struct fsl_mc_io *mc_io,
> + u32 cmd_flags,
> + const struct dpdmai_cfg *cfg,
> + u16 *token)
> +{
> + struct fsl_mc_command cmd = { 0 };
> + int err;
> +
> + /* prepare command */
> + cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_CREATE,
> + cmd_flags,
> + 0);
why waste a line, last arg can be in previous line!
> +int dpdmai_get_tx_queue(struct fsl_mc_io *mc_io,
> + u32 cmd_flags,
> + u16 token,
> + u8 priority,
> + struct dpdmai_tx_queue_attr *attr)
> +{
> + struct fsl_mc_command cmd = { 0 };
> + struct dpdmai_cmd_queue *cmd_params;
> + struct dpdmai_rsp_get_tx_queue *rsp_params;
> + int err;
> +
> + /* prepare command */
> + cmd.header = mc_encode_cmd_header(DPDMAI_CMDID_GET_TX_QUEUE,
> + cmd_flags,
> + token);
> +
> + cmd_params = (struct dpdmai_cmd_queue *)cmd.params;
> + cmd_params->queue = priority;
> +
> + /* send command to mc*/
> + err = mc_send_command(mc_io, &cmd);
> + if (err)
> + return err;
> +
> + /* retrieve response parameters */
> +
> + rsp_params = (struct dpdmai_rsp_get_tx_queue *)cmd.params;
> + attr->fqid = le32_to_cpu(rsp_params->fqid);
> +
> + return 0;
> +}
Okay this file does not use any of dmaengine apis, is this a dmaengine
driver?
> diff --git a/drivers/dma/fsl-dpaa2-qdma/dpdmai.h
> b/drivers/dma/fsl-dpaa2-qdma/dpdmai.h
> new file mode 100644
> index 0000000..c8a7b7f
> --- /dev/null
> +++ b/drivers/dma/fsl-dpaa2-qdma/dpdmai.h
> @@ -0,0 +1,524 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Copyright 2014-2018 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.
> + */
we have SiPDX tag, why do you need ths here!
--
~Vinod
