mirror of https://github.com/hak5/openwrt.git
370 lines
12 KiB
C
370 lines
12 KiB
C
/* $FreeBSD: src/sys/dev/hifn/hifn7751var.h,v 1.9 2007/03/21 03:42:49 sam Exp $ */
|
|
/* $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.
|
|
*/
|
|
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];
|
|
|
|
struct hifn_command *hifn_commands[HIFN_D_RES_RSIZE];
|
|
|
|
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;
|
|
|
|
/*
|
|
* Our current positions for insertion and removal from the desriptor
|
|
* rings.
|
|
*/
|
|
int cmdi, srci, dsti, resi;
|
|
volatile int cmdu, srcu, dstu, resu;
|
|
int cmdk, srck, dstk, resk;
|
|
};
|
|
|
|
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) \
|
|
/* DAVIDM 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) \
|
|
/* DAVIDM bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, (f)) */
|
|
|
|
#define HIFN_RES_SYNC(sc, i, f) \
|
|
/* DAVIDM bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, (f)) */
|
|
|
|
typedef int bus_size_t;
|
|
|
|
/*
|
|
* Holds data specific to a single HIFN board.
|
|
*/
|
|
struct hifn_softc {
|
|
softc_device_decl sc_dev;
|
|
|
|
struct pci_dev *sc_pcidev; /* PCI device pointer */
|
|
spinlock_t sc_mtx; /* per-instance lock */
|
|
|
|
int sc_num; /* for multiple devs */
|
|
|
|
ocf_iomem_t sc_bar0;
|
|
bus_size_t sc_bar0_lastreg;/* bar0 last reg written */
|
|
ocf_iomem_t sc_bar1;
|
|
bus_size_t sc_bar1_lastreg;/* bar1 last reg written */
|
|
|
|
int sc_irq;
|
|
|
|
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;
|
|
dma_addr_t sc_dma_physaddr;/* physical address of sc_dma */
|
|
|
|
int sc_dmansegs;
|
|
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 timer_list sc_tickto; /* for managing DMA */
|
|
|
|
int sc_rngfirst;
|
|
int sc_rnghz; /* RNG polling frequency */
|
|
|
|
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) spin_lock_irqsave(&(_sc)->sc_mtx, l_flags)
|
|
#define HIFN_UNLOCK(_sc) spin_unlock_irqrestore(&(_sc)->sc_mtx, l_flags)
|
|
|
|
/*
|
|
* 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 sk_buff *skb;
|
|
struct uio *io;
|
|
unsigned char *buf;
|
|
} u;
|
|
void *map;
|
|
bus_size_t mapsize;
|
|
int nsegs;
|
|
struct {
|
|
dma_addr_t ds_addr;
|
|
int ds_len;
|
|
} 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_skb src.u.skb
|
|
#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 src_buf src.u.buf
|
|
|
|
#define dst_skb dst.u.skb
|
|
#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
|
|
#define dst_buf dst.u.buf
|
|
|
|
/*
|
|
* 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__ */
|