1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer,
12  *    without modification.
13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
15  *    redistribution must be conditioned upon including a substantially
16  *    similar Disclaimer requirement for further binary redistribution.
17  *
18  * NO WARRANTY
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
22  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
24  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
27  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29  * THE POSSIBILITY OF SUCH DAMAGES.
30  *
31  * $FreeBSD$
32  */
33 
34 #ifndef _BHND_CORES_PCIE2_BHND_PCI_HOSTBVAR_H_
35 #define _BHND_CORES_PCIE2_BHND_PCI_HOSTBVAR_H_
36 
37 /*
38  * PCIe-Gen2 Host Bridge definitions.
39  */
40 
41 #include <sys/param.h>
42 #include <sys/bus.h>
43 
44 #include "bhnd_pcie2_var.h"
45 
46 DECLARE_CLASS(bhnd_pcie2_hostb_driver);
47 
48 /*
49  * PCIe-Gen2 endpoint-mode device quirks
50  */
51 enum {
52 	/**
53 	 * The PCIe SerDes output should be configured with an amplitude of
54 	 * 1214mVpp and a differential output de-emphasis of -8.46dB.
55 	 *
56 	 * The exact issue this workaround resolves is unknown.
57 	 */
58 	BHND_PCIE2_QUIRK_SERDES_TXDRV_DEEMPH	= (1<<0),
59 };
60 
61 /**
62  * bhnd_pci_hostb driver instance state.
63  */
64 struct bhnd_pcie2hb_softc {
65 	struct bhnd_pcie2_softc	common;		/**< common bhnd_pcie2 state */
66 	device_t		dev;
67 	device_t		pci_dev;	/**< host PCI device */
68 	uint32_t		quirks;		/**< hostb device quirks */
69 };
70 
71 #endif /* _BHND_CORES_PCIE2_BHND_PCI_HOSTBVAR_H_ */
72