Re: [PATCH v15] sndif: add ABI for para-virtual sound

[Oleksandr Andrushchenko <andr2000@gmail.com>]

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As agreed on PV call PFA pahole results


On 12/05/2016 03:05 PM, Oleksandr Andrushchenko wrote:
> From: Oleksandr Andrushchenko <Oleksandr_Andrushchenko@epam.com>
>
> Hi, all!
>
> Please find the next version of the ABI for the PV sound
> after addressing review comments.
>
> Thank you,
> Oleksandr Andrushchenko
> Oleksandr Grytsov
>
> Oleksandr Andrushchenko (1):
>    This is the ABI for the two halves of a para-virtualized     sound
>      driver to communicate with each to other.
>
>   xen/include/public/io/sndif.h | 671 ++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 671 insertions(+)
>   create mode 100644 xen/include/public/io/sndif.h
>


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[-- Attachment #3: sndif-x32.txt --]
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struct xensnd_open_req {
	uint32_t                   pcm_rate;             /*     0     4 */
	uint8_t                    pcm_format;           /*     4     1 */
	uint8_t                    pcm_channels;         /*     5     1 */
	uint16_t                   reserved;             /*     6     2 */
	uint32_t                   buffer_sz;            /*     8     4 */
	grant_ref_t                gref_directory_start; /*    12     4 */

	/* size: 16, cachelines: 1, members: 6 */
	/* last cacheline: 16 bytes */
};
struct xensnd_page_directory {
	grant_ref_t                gref_dir_next_page;   /*     0     4 */
	grant_ref_t                gref[1];              /*     4     4 */

	/* size: 8, cachelines: 1, members: 2 */
	/* last cacheline: 8 bytes */
};
struct xensnd_rw_req {
	uint32_t                   offset;               /*     0     4 */
	uint32_t                   len;                  /*     4     4 */

	/* size: 8, cachelines: 1, members: 2 */
	/* last cacheline: 8 bytes */
};
struct xensnd_req {
	uint16_t                   id;                   /*     0     2 */
	uint8_t                    operation;            /*     2     1 */
	uint8_t                    stream_idx;           /*     3     1 */
	uint32_t                   reserved;             /*     4     4 */
	union {
		struct xensnd_open_req open;             /*          16 */
		struct xensnd_rw_req rw;                 /*           8 */
		uint8_t            reserved[24];         /*          24 */
	} op;                                            /*     8    24 */

	/* size: 32, cachelines: 1, members: 5 */
	/* last cacheline: 32 bytes */
};
struct xensnd_resp {
	uint16_t                   id;                   /*     0     2 */
	uint8_t                    operation;            /*     2     1 */
	uint8_t                    stream_idx;           /*     3     1 */
	int8_t                     status;               /*     4     1 */
	uint8_t                    reserved[27];         /*     5    27 */

	/* size: 32, cachelines: 1, members: 5 */
	/* last cacheline: 32 bytes */
};

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struct xensnd_open_req {
	uint32_t                   pcm_rate;             /*     0     4 */
	uint8_t                    pcm_format;           /*     4     1 */
	uint8_t                    pcm_channels;         /*     5     1 */
	uint16_t                   reserved;             /*     6     2 */
	uint32_t                   buffer_sz;            /*     8     4 */
	grant_ref_t                gref_directory_start; /*    12     4 */

	/* size: 16, cachelines: 1, members: 6 */
	/* last cacheline: 16 bytes */
};
struct xensnd_page_directory {
	grant_ref_t                gref_dir_next_page;   /*     0     4 */
	grant_ref_t                gref[1];              /*     4     4 */

	/* size: 8, cachelines: 1, members: 2 */
	/* last cacheline: 8 bytes */
};
struct xensnd_rw_req {
	uint32_t                   offset;               /*     0     4 */
	uint32_t                   len;                  /*     4     4 */

	/* size: 8, cachelines: 1, members: 2 */
	/* last cacheline: 8 bytes */
};
struct xensnd_req {
	uint16_t                   id;                   /*     0     2 */
	uint8_t                    operation;            /*     2     1 */
	uint8_t                    stream_idx;           /*     3     1 */
	uint32_t                   reserved;             /*     4     4 */
	union {
		struct xensnd_open_req open;             /*          16 */
		struct xensnd_rw_req rw;                 /*           8 */
		uint8_t            reserved[24];         /*          24 */
	} op;                                            /*     8    24 */

	/* size: 32, cachelines: 1, members: 5 */
	/* last cacheline: 32 bytes */
};
struct xensnd_resp {
	uint16_t                   id;                   /*     0     2 */
	uint8_t                    operation;            /*     2     1 */
	uint8_t                    stream_idx;           /*     3     1 */
	int8_t                     status;               /*     4     1 */
	uint8_t                    reserved[27];         /*     5    27 */

	/* size: 32, cachelines: 1, members: 5 */
	/* last cacheline: 32 bytes */
};

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