linux-kernel - Re: [PATCH v7 1/3] drivers/bus: Added Freescale Management Complex APIs

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Date:	Thu, 26 Feb 2015 13:55:39 +0100
From:	Alexander Graf <agraf@...e.de>
To:	"J. German Rivera" <German.Rivera@...escale.com>,
	gregkh@...uxfoundation.org, arnd@...db.de,
	linux-kernel@...r.kernel.org
CC:	stuart.yoder@...escale.com, Kim.Phillips@...escale.com,
	scottwood@...escale.com, bhamciu1@...escale.com,
	R89243@...escale.com, Geoff.Thorpe@...escale.com,
	bhupesh.sharma@...escale.com, nir.erez@...escale.com,
	richard.schmitt@...escale.com
Subject: Re: [PATCH v7 1/3] drivers/bus: Added Freescale Management Complex
 APIs



On 24.02.15 23:21, J. German Rivera wrote:
> APIs to access the Management Complex (MC) hardware
> module of Freescale LS2 SoCs. This patch includes
> APIs to check the MC firmware version and to manipulate
> DPRC objects in the MC.
> 
> Signed-off-by: J. German Rivera <German.Rivera@...escale.com>
> Signed-off-by: Stuart Yoder <stuart.yoder@...escale.com>

Only 2 minor nits.

[...]

> +int mc_get_version(struct fsl_mc_io *mc_io, struct mc_version *mc_ver_info)
> +{
> +	struct mc_command cmd = { 0 };
> +	int err;
> +
> +	/* prepare command */
> +	cmd.header = mc_encode_cmd_header(DPMNG_CMDID_GET_VERSION,
> +					  MC_CMD_PRI_LOW, 0);
> +
> +	/* send command to mc*/

Either my mail client is broken or this is a copy&paste error throughout
the file :).

> +	err = mc_send_command(mc_io, &cmd);
> +	if (err)
> +		return err;
> +
> +	/* retrieve response parameters */
> +	mc_ver_info->revision = mc_dec(cmd.params[0], 0, 32);
> +	mc_ver_info->major = mc_dec(cmd.params[0], 32, 32);
> +	mc_ver_info->minor = mc_dec(cmd.params[1], 0, 32);
> +
> +	return 0;
> +}

[...]

> +
> +struct mc_command {
> +	uint64_t header;
> +	uint64_t params[MC_CMD_NUM_OF_PARAMS];
> +};
> +
> +enum mc_cmd_status {
> +	MC_CMD_STATUS_OK = 0x0, /*!< Completed successfully */

What is /*!< supposed to be? Can't this just be /*?

> +	MC_CMD_STATUS_READY = 0x1, /*!< Ready to be processed */
> +	MC_CMD_STATUS_AUTH_ERR = 0x3, /*!< Authentication error */
> +	MC_CMD_STATUS_NO_PRIVILEGE = 0x4, /*!< No privilege */
> +	MC_CMD_STATUS_DMA_ERR = 0x5, /*!< DMA or I/O error */
> +	MC_CMD_STATUS_CONFIG_ERR = 0x6, /*!< Configuration error */
> +	MC_CMD_STATUS_TIMEOUT = 0x7, /*!< Operation timed out */
> +	MC_CMD_STATUS_NO_RESOURCE = 0x8, /*!< No resources */
> +	MC_CMD_STATUS_NO_MEMORY = 0x9, /*!< No memory available */
> +	MC_CMD_STATUS_BUSY = 0xA, /*!< Device is busy */
> +	MC_CMD_STATUS_UNSUPPORTED_OP = 0xB, /*!< Unsupported operation */
> +	MC_CMD_STATUS_INVALID_STATE = 0xC /*!< Invalid state */
> +};


Alex
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