doc/img: figures by alessandro

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Federico Vaga <federico.vaga@gmail.com>

doc/img/zio-block.ps

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doc/img/zio-control.ps

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+() line
+(/* byte 0 */) line
+(uint8_t major_version;) line
+(uint8_t minor_version;) line
+(uint8_t more_ctrl;      /* number of further ctrl, for interleaved    */) line
+(uint8_t alarms;         /* set by channel, persistent, write 1 to clr */) line
+() line
+(/* byte 4*/) line
+(uint32_t seq_num;       /* block sequence number                      */) line
+(uint32_t flags;         /* endianness etc, see below                  */) line
+(uint32_t nsamples;      /* number of samples in this data block       */) line
+() line
+(/* byte 16 */) line
+(uint16_t ssize;         /* sample-size for each of them, in bytes     */) line
+(uint16_t sbits;         /* sample-bits: number of valid bits          */) line
+(uint16_t cset_i;        /* index of channel-set within device         */) line
+(uint16_t chan_i;        /* index of channel within cset               */) line
+() line
+(/* byte 24 */) line
+(uint8_t hostid[8];      /* Macaddress or whatever unique              */) line
+() line
+(/* byte 32 */) line
+(struct zio_timestamp tstamp;) line
+() line
+(/* byte 56 */) line
+(uint32_t mem_offset;    /* position in mmap buffer of this block      */) line
+(uint32_t reserved;      /* possibly another offset, or space for 64b  */) line
+() line
+(/* byte 64 */) line
+(/* The control block includes what device the data belongs to         */) line
+(char devname[ZIO_OBJ_NAME_LEN];) line
+() line
+(/* byte 76 */) line
+(/* Each data block is associated with a trigger and its features      */) line
+(char triggername[ZIO_OBJ_NAME_LEN];) line
+() line
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+(struct zio_ctrl_attr attr_channel;) line
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+() line
+(/* byte 488 */) line
+(uint8_t __fill_end[ZIO_CONTROL_SIZE - 488];) line
+
+showpage