1/*
2 * Freescale SEC data structures for integration with ocf-linux
3 *
4 * Copyright (c) 2006 Freescale Semiconductor, Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/*
31 * paired descriptor and associated crypto operation
32 */
33struct desc_cryptop_pair {
34	struct talitos_desc	cf_desc;	/* descriptor ptr */
35	struct cryptop		*cf_crp;	/* cryptop ptr */
36};
37
38/*
39 * Holds data specific to a single talitos device.
40 */
41struct talitos_softc {
42	softc_device_decl	sc_cdev;
43	struct platform_device	*sc_dev;	/* device backpointer */
44	ocf_iomem_t		sc_base_addr;
45	int			sc_irq;
46	int			sc_num;		/* if we have multiple chips */
47	int32_t			sc_cid;		/* crypto tag */
48	u64			sc_chiprev;	/* major/minor chip revision */
49	int			sc_nsessions;
50	struct talitos_session	*sc_sessions;
51	int			sc_num_channels;/* number of crypto channels */
52	int			sc_chfifo_len;	/* channel fetch fifo len */
53	int			sc_exec_units;	/* execution units mask */
54	int			sc_desc_types;	/* descriptor types mask */
55	/*
56	 * mutual exclusion for intra-channel resources, e.g. fetch fifos
57	 * the last entry is a meta-channel lock used by the channel scheduler
58	 */
59	spinlock_t		*sc_chnfifolock;
60	/* sc_chnlastalgo contains last algorithm for that channel */
61	int			*sc_chnlastalg;
62	/* sc_chnfifo holds pending descriptor--crypto operation pairs */
63	struct desc_cryptop_pair	**sc_chnfifo;
64};
65
66struct talitos_session {
67	u_int32_t	ses_used;
68	u_int32_t	ses_klen;		/* key length in bits */
69	u_int32_t	ses_key[8];		/* DES/3DES/AES key */
70	u_int32_t	ses_hmac[5];		/* hmac inner state */
71	u_int32_t	ses_hmac_len;		/* hmac length */
72	u_int32_t	ses_mlen;		/* desired hash result len (12=ipsec or 16) */
73};
74
75#define	TALITOS_SESSION(sid)	((sid) & 0x0fffffff)
76#define	TALITOS_SID(crd, sesn)	(((crd) << 28) | ((sesn) & 0x0fffffff))
77