Differential D6367 Diff 16372 head/sys/dev/sfxge/common/ef10_nvram.c

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head/sys/dev/sfxge/common/ef10_nvram.c

Show First 20 Lines • Show All 895 Lines • ▼ Show 20 Lines	__in_bcount(buffer_size)
caddr_t bufferp,		caddr_t bufferp,
__in size_t buffer_size,		__in size_t buffer_size,
__in uint32_t offset,		__in uint32_t offset,
__out uint32_t *endp)		__out uint32_t *endp)
{		{
// Read to end of partition		// Read to end of partition
tlv_cursor_t cursor;		tlv_cursor_t cursor;
efx_rc_t rc;		efx_rc_t rc;
		uint32_t *segment_used;

if ((rc = tlv_init_cursor_from_size(&cursor, (uint8_t *)bufferp,		if ((rc = tlv_init_cursor_from_size(&cursor, (uint8_t *)bufferp,
buffer_size)) != 0) {		buffer_size)) != 0) {
rc = EFAULT;		rc = EFAULT;
goto fail1;		goto fail1;
}		}

if ((rc = tlv_require_end(&cursor)) != 0)		segment_used = cursor.block;

		/*
		* Go through each segment and check that it has an end tag. If there
		* is no end tag then the previous segment was the last valid one,
		* so return the used space including that end tag.
		*/
		while (tlv_tag(&cursor) == TLV_TAG_PARTITION_HEADER) {
		if (tlv_require_end(&cursor) != 0) {
		if (segment_used == cursor.block) {
		/*
		* First segment is corrupt, so there is
		* no valid data in partition.
		*/
		rc = EINVAL;
goto fail2;		goto fail2;
		}
		break;
		}
		segment_used = cursor.end + 1;

*endp = byte_offset(tlv_last_segment_end(&cursor)+1, cursor.block);		cursor.current = segment_used;
		}
		/* Return space used (including the END tag) */
		endp = (segment_used - cursor.block) sizeof (uint32_t);

return (0);		return (0);

fail2:		fail2:
EFSYS_PROBE(fail2);		EFSYS_PROBE(fail2);
fail1:		fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);		EFSYS_PROBE1(fail1, efx_rc_t, rc);

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