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      1 /*	$NetBSD: via_padlock.h,v 1.10 2020/06/29 23:38:02 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2003 Jason Wright
      5  * Copyright (c) 2003, 2004 Theo de Raadt
      6  * All rights reserved.
      7  *
      8  * Permission to use, copy, modify, and distribute this software for any
      9  * purpose with or without fee is hereby granted, provided that the above
     10  * copyright notice and this permission notice appear in all copies.
     11  *
     12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     19  */
     20 
     21 #ifndef _X86_VIA_PADLOCK_H_
     22 #define _X86_VIA_PADLOCK_H_
     23 
     24 #if defined(_KERNEL)
     25 
     26 #include <sys/rndsource.h>
     27 #include <sys/callout.h>
     28 
     29 #include <crypto/aes/aes.h>
     30 
     31 /* VIA C3 xcrypt-* instruction context control options */
     32 #define C3_CRYPT_CWLO_ROUND_M		0x0000000f
     33 #define C3_CRYPT_CWLO_ALG_M		0x00000070
     34 #define C3_CRYPT_CWLO_ALG_AES		0x00000000
     35 #define C3_CRYPT_CWLO_KEYGEN_M		0x00000080
     36 #define C3_CRYPT_CWLO_KEYGEN_HW		0x00000000
     37 #define C3_CRYPT_CWLO_KEYGEN_SW		0x00000080
     38 #define C3_CRYPT_CWLO_NORMAL		0x00000000
     39 #define C3_CRYPT_CWLO_INTERMEDIATE	0x00000100
     40 #define C3_CRYPT_CWLO_ENCRYPT		0x00000000
     41 #define C3_CRYPT_CWLO_DECRYPT		0x00000200
     42 #define C3_CRYPT_CWLO_KEY128		0x0000000a      /* 128bit, 10 rds */
     43 #define C3_CRYPT_CWLO_KEY192		0x0000040c      /* 192bit, 12 rds */
     44 #define C3_CRYPT_CWLO_KEY256		0x0000080e      /* 256bit, 15 rds */
     45 
     46 struct via_padlock_session {
     47         uint32_t	ses_ekey[4*(AES_256_NROUNDS + 1)];
     48         uint32_t	ses_dkey[4*(AES_256_NROUNDS + 1)];
     49         uint32_t	ses_cw0;
     50         struct swcr_data	*swd;
     51         int	ses_klen;
     52         int	ses_used;
     53 };
     54 
     55 struct via_padlock_softc {
     56 	device_t	sc_dev;
     57 
     58 	uint32_t	op_cw[4];	/* 128 bit aligned */
     59 	uint8_t	op_iv[16];	/* 128 bit aligned */
     60 	void		*op_buf;
     61 
     62 	/* normal softc stuff */
     63 	int32_t		sc_cid;
     64 	bool		sc_cid_attached;
     65 	int		sc_nsessions;
     66 	struct via_padlock_session *sc_sessions;
     67 };
     68 
     69 #define VIAC3_SESSION(sid)	((sid) & 0x0fffffff)
     70 #define VIAC3_SID(crd,ses)	(((crd) << 28) | ((ses) & 0x0fffffff))
     71 
     72 #endif /* _KERNEL */
     73 
     74 #if defined(_KERNEL) || defined(_KMEMUSER)
     75 struct cpu_info;
     76 
     77 struct via_padlock {
     78 	struct cpu_info		*vp_ci;
     79 	int			vp_freq;
     80 };
     81 
     82 #endif /* _KERNEL || _KMEMUSER */
     83 #endif /* _X86_VIA_PADLOCK_H_ */
     84