own.h

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    1 /*-
    2  * Copyright (c) 2015 M. Warner Losh <imp@FreeBSD.org>
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice unmodified, this list of conditions, and the following
    9  *    disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   24  *
   25  * $FreeBSD$
   26  */
   27 
   28 #ifndef DEV_OW_OWN_H
   29 #define DEV_OW_OWN_H 1
   30 
   31 #include "own_if.h"
   32 
   33 #define READ_ROM        0x33
   34 #define MATCH_ROM       0x55
   35 #define SKIP_ROM        0xcc
   36 #define ALARM_SEARCH    0xec
   37 #define SEARCH_ROM      0xf0
   38 
   39 static inline int
   40 own_send_command(device_t pdev, struct ow_cmd *cmd)
   41 {
   42         device_t ndev = device_get_parent(pdev);
   43 
   44         return OWN_SEND_COMMAND(ndev, pdev, cmd);
   45 }
   46 
   47 /*
   48  * How args for own_acquire_bus
   49  */
   50 #define OWN_WAIT        1
   51 #define OWN_DONTWAIT    2
   52 
   53 static inline int
   54 own_acquire_bus(device_t pdev, int how)
   55 {
   56         device_t ndev = device_get_parent(pdev);
   57 
   58         return OWN_ACQUIRE_BUS(ndev, pdev, how);
   59 }
   60 
   61 static inline void
   62 own_release_bus(device_t pdev)
   63 {
   64         device_t ndev = device_get_parent(pdev);
   65 
   66         OWN_RELEASE_BUS(ndev, pdev);
   67 }
   68 
   69 static inline uint8_t
   70 own_crc(device_t pdev, uint8_t *buffer, size_t len)
   71 {
   72         device_t ndev = device_get_parent(pdev);
   73 
   74         return OWN_CRC(ndev, pdev, buffer, len);
   75 }
   76 
   77 static inline void
   78 own_self_command(device_t pdev, struct ow_cmd *cmd, uint8_t xpt_cmd)
   79 {
   80         uint8_t *mep;
   81 
   82         memset(cmd, 0, sizeof(*cmd));
   83         mep = ow_get_romid(pdev);
   84         cmd->rom_cmd[0] = MATCH_ROM;
   85         memcpy(&cmd->rom_cmd[1], mep, sizeof(romid_t));
   86         cmd->rom_len = 1 + sizeof(romid_t);
   87         cmd->xpt_cmd[0] = xpt_cmd;
   88         cmd->xpt_len = 1;
   89 }
   90 
   91 static inline int
   92 own_command_wait(device_t pdev, struct ow_cmd *cmd)
   93 {
   94         int rv;
   95 
   96         rv = own_acquire_bus(pdev, OWN_WAIT);
   97         if (rv != 0)
   98                 return rv;
   99         rv = own_send_command(pdev, cmd);
  100         own_release_bus(pdev);
  101         return rv;
  102 }
  103 
  104 #endif /* DEV_OW_OWLL_H */

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FreeBSD/Linux Kernel Cross Reference sys/dev/ow/own.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/ow/own.h