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| Current File : //sys/dev/hifn/hifn7751var.h |
/* $FreeBSD: release/9.1.0/sys/dev/hifn/hifn7751var.h 213091 2010-09-24 04:46:46Z gonzo $ */
/* $OpenBSD: hifn7751var.h,v 1.42 2002/04/08 17:49:42 jason Exp $ */
/*-
* Invertex AEON / Hifn 7751 driver
* Copyright (c) 1999 Invertex Inc. All rights reserved.
* Copyright (c) 1999 Theo de Raadt
* Copyright (c) 2000-2001 Network Security Technologies, Inc.
* http://www.netsec.net
*
* Please send any comments, feedback, bug-fixes, or feature requests to
* software@invertex.com.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Effort sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
*
*/
#ifndef __HIFN7751VAR_H__
#define __HIFN7751VAR_H__
#ifdef _KERNEL
/*
* Some configurable values for the driver. By default command+result
* descriptor rings are the same size. The src+dst descriptor rings
* are sized at 3.5x the number of potential commands. Slower parts
* (e.g. 7951) tend to run out of src descriptors; faster parts (7811)
* src+cmd/result descriptors. It's not clear that increasing the size
* of the descriptor rings helps performance significantly as other
* factors tend to come into play (e.g. copying misaligned packets).
*/
#define HIFN_D_CMD_RSIZE 24 /* command descriptors */
#define HIFN_D_SRC_RSIZE ((HIFN_D_CMD_RSIZE * 7) / 2) /* source descriptors */
#define HIFN_D_RES_RSIZE HIFN_D_CMD_RSIZE /* result descriptors */
#define HIFN_D_DST_RSIZE HIFN_D_SRC_RSIZE /* destination descriptors */
/*
* Length values for cryptography
*/
#define HIFN_DES_KEY_LENGTH 8
#define HIFN_3DES_KEY_LENGTH 24
#define HIFN_MAX_CRYPT_KEY_LENGTH HIFN_3DES_KEY_LENGTH
#define HIFN_IV_LENGTH 8
#define HIFN_AES_IV_LENGTH 16
#define HIFN_MAX_IV_LENGTH HIFN_AES_IV_LENGTH
/*
* Length values for authentication
*/
#define HIFN_MAC_KEY_LENGTH 64
#define HIFN_MD5_LENGTH 16
#define HIFN_SHA1_LENGTH 20
#define HIFN_MAC_TRUNC_LENGTH 12
#define MAX_SCATTER 64
/*
* Data structure to hold all 4 rings and any other ring related data
* that should reside in DMA.
*/
struct hifn_dma {
/*
* Descriptor rings. We add +1 to the size to accomidate the
* jump descriptor.
*/
struct hifn_desc cmdr[HIFN_D_CMD_RSIZE+1];
struct hifn_desc srcr[HIFN_D_SRC_RSIZE+1];
struct hifn_desc dstr[HIFN_D_DST_RSIZE+1];
struct hifn_desc resr[HIFN_D_RES_RSIZE+1];
u_char command_bufs[HIFN_D_CMD_RSIZE][HIFN_MAX_COMMAND];
u_char result_bufs[HIFN_D_CMD_RSIZE][HIFN_MAX_RESULT];
u_int32_t slop[HIFN_D_CMD_RSIZE];
u_int64_t test_src, test_dst;
} ;
struct hifn_session {
int hs_used;
int hs_mlen;
u_int8_t hs_iv[HIFN_MAX_IV_LENGTH];
};
#define HIFN_RING_SYNC(sc, r, i, f) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, (f))
#define HIFN_CMDR_SYNC(sc, i, f) HIFN_RING_SYNC((sc), cmdr, (i), (f))
#define HIFN_RESR_SYNC(sc, i, f) HIFN_RING_SYNC((sc), resr, (i), (f))
#define HIFN_SRCR_SYNC(sc, i, f) HIFN_RING_SYNC((sc), srcr, (i), (f))
#define HIFN_DSTR_SYNC(sc, i, f) HIFN_RING_SYNC((sc), dstr, (i), (f))
#define HIFN_CMD_SYNC(sc, i, f) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, (f))
#define HIFN_RES_SYNC(sc, i, f) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, (f))
/*
* Holds data specific to a single HIFN board.
*/
struct hifn_softc {
device_t sc_dev; /* device backpointer */
struct mtx sc_mtx; /* per-instance lock */
bus_dma_tag_t sc_dmat; /* parent DMA tag decriptor */
struct resource *sc_bar0res;
bus_space_handle_t sc_sh0; /* bar0 bus space handle */
bus_space_tag_t sc_st0; /* bar0 bus space tag */
bus_size_t sc_bar0_lastreg;/* bar0 last reg written */
struct resource *sc_bar1res;
bus_space_handle_t sc_sh1; /* bar1 bus space handle */
bus_space_tag_t sc_st1; /* bar1 bus space tag */
bus_size_t sc_bar1_lastreg;/* bar1 last reg written */
struct resource *sc_irq;
void *sc_intrhand; /* interrupt handle */
u_int32_t sc_dmaier;
u_int32_t sc_drammodel; /* 1=dram, 0=sram */
u_int32_t sc_pllconfig; /* 7954/7955/7956 PLL config */
struct hifn_dma *sc_dma;
bus_dmamap_t sc_dmamap;
bus_dma_segment_t sc_dmasegs[1];
bus_addr_t sc_dma_physaddr;/* physical address of sc_dma */
int sc_dmansegs;
struct hifn_command *sc_hifn_commands[HIFN_D_RES_RSIZE];
/*
* Our current positions for insertion and removal from the desriptor
* rings.
*/
int sc_cmdi, sc_srci, sc_dsti, sc_resi;
volatile int sc_cmdu, sc_srcu, sc_dstu, sc_resu;
int sc_cmdk, sc_srck, sc_dstk, sc_resk;
int32_t sc_cid;
int sc_maxses;
int sc_nsessions;
struct hifn_session *sc_sessions;
int sc_ramsize;
int sc_flags;
#define HIFN_HAS_RNG 0x1 /* includes random number generator */
#define HIFN_HAS_PUBLIC 0x2 /* includes public key support */
#define HIFN_HAS_AES 0x4 /* includes AES support */
#define HIFN_IS_7811 0x8 /* Hifn 7811 part */
#define HIFN_IS_7956 0x10 /* Hifn 7956/7955 don't have SDRAM */
struct callout sc_rngto; /* for polling RNG */
struct callout sc_tickto; /* for managing DMA */
int sc_rngfirst;
int sc_rnghz; /* RNG polling frequency */
struct rndtest_state *sc_rndtest; /* RNG test state */
void (*sc_harvest)(struct rndtest_state *,
void *, u_int);
int sc_c_busy; /* command ring busy */
int sc_s_busy; /* source data ring busy */
int sc_d_busy; /* destination data ring busy */
int sc_r_busy; /* result ring busy */
int sc_active; /* for initial countdown */
int sc_needwakeup; /* ops q'd wating on resources */
int sc_curbatch; /* # ops submitted w/o int */
int sc_suspended;
#ifdef HIFN_VULCANDEV
struct cdev *sc_pkdev;
#endif
};
#define HIFN_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
#define HIFN_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
/*
* hifn_command_t
*
* This is the control structure used to pass commands to hifn_encrypt().
*
* flags
* -----
* Flags is the bitwise "or" values for command configuration. A single
* encrypt direction needs to be set:
*
* HIFN_ENCODE or HIFN_DECODE
*
* To use cryptography, a single crypto algorithm must be included:
*
* HIFN_CRYPT_3DES or HIFN_CRYPT_DES
*
* To use authentication is used, a single MAC algorithm must be included:
*
* HIFN_MAC_MD5 or HIFN_MAC_SHA1
*
* By default MD5 uses a 16 byte hash and SHA-1 uses a 20 byte hash.
* If the value below is set, hash values are truncated or assumed
* truncated to 12 bytes:
*
* HIFN_MAC_TRUNC
*
* Keys for encryption and authentication can be sent as part of a command,
* or the last key value used with a particular session can be retrieved
* and used again if either of these flags are not specified.
*
* HIFN_CRYPT_NEW_KEY, HIFN_MAC_NEW_KEY
*
* session_num
* -----------
* A number between 0 and 2048 (for DRAM models) or a number between
* 0 and 768 (for SRAM models). Those who don't want to use session
* numbers should leave value at zero and send a new crypt key and/or
* new MAC key on every command. If you use session numbers and
* don't send a key with a command, the last key sent for that same
* session number will be used.
*
* Warning: Using session numbers and multiboard at the same time
* is currently broken.
*
* mbuf
* ----
* Either fill in the mbuf pointer and npa=0 or
* fill packp[] and packl[] and set npa to > 0
*
* mac_header_skip
* ---------------
* The number of bytes of the source_buf that are skipped over before
* authentication begins. This must be a number between 0 and 2^16-1
* and can be used by IPsec implementers to skip over IP headers.
* *** Value ignored if authentication not used ***
*
* crypt_header_skip
* -----------------
* The number of bytes of the source_buf that are skipped over before
* the cryptographic operation begins. This must be a number between 0
* and 2^16-1. For IPsec, this number will always be 8 bytes larger
* than the auth_header_skip (to skip over the ESP header).
* *** Value ignored if cryptography not used ***
*
*/
struct hifn_operand {
union {
struct mbuf *m;
struct uio *io;
} u;
bus_dmamap_t map;
bus_size_t mapsize;
int nsegs;
bus_dma_segment_t segs[MAX_SCATTER];
};
struct hifn_command {
u_int16_t session_num;
u_int16_t base_masks, cry_masks, mac_masks;
u_int8_t iv[HIFN_MAX_IV_LENGTH], *ck, mac[HIFN_MAC_KEY_LENGTH];
int cklen;
int sloplen, slopidx;
struct hifn_operand src;
struct hifn_operand dst;
struct hifn_softc *softc;
struct cryptop *crp;
struct cryptodesc *enccrd, *maccrd;
};
#define src_m src.u.m
#define src_io src.u.io
#define src_map src.map
#define src_mapsize src.mapsize
#define src_segs src.segs
#define src_nsegs src.nsegs
#define dst_m dst.u.m
#define dst_io dst.u.io
#define dst_map dst.map
#define dst_mapsize dst.mapsize
#define dst_segs dst.segs
#define dst_nsegs dst.nsegs
/*
* Return values for hifn_crypto()
*/
#define HIFN_CRYPTO_SUCCESS 0
#define HIFN_CRYPTO_BAD_INPUT (-1)
#define HIFN_CRYPTO_RINGS_FULL (-2)
/**************************************************************************
*
* Function: hifn_crypto
*
* Purpose: Called by external drivers to begin an encryption on the
* HIFN board.
*
* Blocking/Non-blocking Issues
* ============================
* The driver cannot block in hifn_crypto (no calls to tsleep) currently.
* hifn_crypto() returns HIFN_CRYPTO_RINGS_FULL if there is not enough
* room in any of the rings for the request to proceed.
*
* Return Values
* =============
* 0 for success, negative values on error
*
* Defines for negative error codes are:
*
* HIFN_CRYPTO_BAD_INPUT : The passed in command had invalid settings.
* HIFN_CRYPTO_RINGS_FULL : All DMA rings were full and non-blocking
* behaviour was requested.
*
*************************************************************************/
/*
* Convert back and forth from 'sid' to 'card' and 'session'
*/
#define HIFN_CARD(sid) (((sid) & 0xf0000000) >> 28)
#define HIFN_SESSION(sid) ((sid) & 0x000007ff)
#define HIFN_SID(crd,ses) (((crd) << 28) | ((ses) & 0x7ff))
#endif /* _KERNEL */
struct hifn_stats {
u_int64_t hst_ibytes;
u_int64_t hst_obytes;
u_int32_t hst_ipackets;
u_int32_t hst_opackets;
u_int32_t hst_invalid;
u_int32_t hst_nomem; /* malloc or one of hst_nomem_* */
u_int32_t hst_abort;
u_int32_t hst_noirq; /* IRQ for no reason */
u_int32_t hst_totbatch; /* ops submitted w/o interrupt */
u_int32_t hst_maxbatch; /* max ops submitted together */
u_int32_t hst_unaligned; /* unaligned src caused copy */
/*
* The following divides hst_nomem into more specific buckets.
*/
u_int32_t hst_nomem_map; /* bus_dmamap_create failed */
u_int32_t hst_nomem_load; /* bus_dmamap_load_* failed */
u_int32_t hst_nomem_mbuf; /* MGET* failed */
u_int32_t hst_nomem_mcl; /* MCLGET* failed */
u_int32_t hst_nomem_cr; /* out of command/result descriptor */
u_int32_t hst_nomem_sd; /* out of src/dst descriptors */
};
#endif /* __HIFN7751VAR_H__ */