2 * Copyright (c) 2014 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com> and was subsequently ported
6 * to FreeBSD by Michael Gmelin <freebsd@grem.de>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * 3. Neither the name of The DragonFly Project nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific, prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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38 #ifndef _ICHIIC_IG4_VAR_H_
39 #define _ICHIIC_IG4_VAR_H_
42 #include "device_if.h"
44 #include "iicbus_if.h"
55 /* Controller has additional registers */
56 #define IG4_HAS_ADDREGS(vers) ((vers) >= IG4_SKYLAKE)
59 uint32_t ic_clock_rate; /* MHz */
60 uint32_t sda_fall_time; /* nsec */
61 uint32_t scl_fall_time; /* nsec */
62 uint32_t sda_hold_time; /* nsec */
83 struct resource *regs_res;
85 struct resource *intr_res;
89 enum ig4_vers version;
93 int platform_attached : 1;
101 * Functions implementing the icbus interface that interact
102 * with the controller acquire an exclusive lock on call_lock
103 * to prevent interleaving of calls to the interface.
105 * io_lock is used as condition variable to synchronize active process
106 * with the interrupt handler. It should not be used for tasks other
107 * than waiting for interrupt and passing parameters to and from
114 typedef struct ig4iic_softc ig4iic_softc_t;
116 extern devclass_t ig4iic_devclass;
118 /* Attach/Detach called from ig4iic_pci_*() */
119 int ig4iic_attach(ig4iic_softc_t *sc);
120 int ig4iic_detach(ig4iic_softc_t *sc);
121 int ig4iic_suspend(ig4iic_softc_t *sc);
122 int ig4iic_resume(ig4iic_softc_t *sc);
125 extern iicbus_transfer_t ig4iic_transfer;
126 extern iicbus_reset_t ig4iic_reset;
127 extern iicbus_callback_t ig4iic_callback;
129 #endif /* _ICHIIC_IG4_VAR_H_ */