diff options
Diffstat (limited to 'sys/dev/ow/owll.h')
| -rw-r--r-- | sys/dev/ow/owll.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/sys/dev/ow/owll.h b/sys/dev/ow/owll.h new file mode 100644 index 000000000000..ba2572a0b66e --- /dev/null +++ b/sys/dev/ow/owll.h @@ -0,0 +1,54 @@ +/*- + * Copyright (c) 2015 M. Warner Losh <imp@freebsd.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + * + * $FreeBSD$ + */ + +#ifndef DEV_OW_OWLL_H +#define DEV_OW_OWLL_H 1 + +/* + * Generalized parameters for the mode of operation in the bus. All units + * are in nanoseconds, and assume that all timings are < 4s. + * See owll_if.m for timings, and refer to AN937 for details. + */ +struct ow_timing +{ + uint32_t t_slot; /* Slot time */ + uint32_t t_low0; /* Time low for a 0 bit. */ + uint32_t t_low1; /* Time low for a 1 bit. */ + uint32_t t_lowr; /* Time slave holds line down per bit */ + uint32_t t_release; /* Time after t_rdv to float high */ + uint32_t t_rec; /* After sample before M low */ + uint32_t t_rdv; /* Time to poll the bit after M low */ + uint32_t t_rstl; /* Time M low on reset */ + uint32_t t_rsth; /* Time M high on reset */ + uint32_t t_pdl; /* Time S low on reset */ + uint32_t t_pdh; /* Time R high after M low on reset */ +}; + +#include "owll_if.h" + +#endif /* DEV_OW_OWLL_H */ |