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/*-
* The linux port of this code done by David McCullough
* Copyright (C) 2004-2010 David McCullough <david_mccullough@mcafee.com>
* The license and original author are listed below.
*
* Copyright (c) 2003 Sam Leffler, Errno Consulting
* Copyright (c) 2003 Global Technology Associates, Inc.
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD: src/sys/dev/safe/safevar.h,v 1.2 2006/05/17 18:34:26 pjd Exp $
*/
#ifndef _SAFE_SAFEVAR_H_
#define _SAFE_SAFEVAR_H_
/* Maximum queue length */
#ifndef SAFE_MAX_NQUEUE
#define SAFE_MAX_NQUEUE 60
#endif
#define SAFE_MAX_PART 64 /* Maximum scatter/gather depth */
#define SAFE_DMA_BOUNDARY 0 /* No boundary for source DMA ops */
#define SAFE_MAX_DSIZE 2048 /* MCLBYTES Fixed scatter particle size */
#define SAFE_MAX_SSIZE 0x0ffff /* Maximum gather particle size */
#define SAFE_MAX_DMA 0xfffff /* Maximum PE operand size (20 bits) */
/* total src+dst particle descriptors */
#define SAFE_TOTAL_DPART (SAFE_MAX_NQUEUE * SAFE_MAX_PART)
#define SAFE_TOTAL_SPART (SAFE_MAX_NQUEUE * SAFE_MAX_PART)
#define SAFE_RNG_MAXBUFSIZ 128 /* 32-bit words */
#define SAFE_CARD(sid) (((sid) & 0xf0000000) >> 28)
#define SAFE_SESSION(sid) ( (sid) & 0x0fffffff)
#define SAFE_SID(crd, sesn) (((crd) << 28) | ((sesn) & 0x0fffffff))
#define SAFE_DEF_RTY 0xff /* PCI Retry Timeout */
#define SAFE_DEF_TOUT 0xff /* PCI TRDY Timeout */
#define SAFE_DEF_CACHELINE 0x01 /* Cache Line setting */
#ifdef __KERNEL__
/*
* State associated with the allocation of each chunk
* of memory setup for DMA.
*/
struct safe_dma_alloc {
dma_addr_t dma_paddr;
void *dma_vaddr;
};
/*
* Cryptographic operand state. One of these exists for each
* source and destination operand passed in from the crypto
* subsystem. When possible source and destination operands
* refer to the same memory. More often they are distinct.
* We track the virtual address of each operand as well as
* where each is mapped for DMA.
*/
struct safe_operand {
union {
struct sk_buff *skb;
struct uio *io;
} u;
void *map;
int mapsize; /* total number of bytes in segs */
struct {
dma_addr_t ds_addr;
int ds_len;
int ds_tlen;
} segs[SAFE_MAX_PART];
int nsegs;
};
/*
* Packet engine ring entry and cryptographic operation state.
* The packet engine requires a ring of descriptors that contain
* pointers to various cryptographic state. However the ring
* configuration register allows you to specify an arbitrary size
* for ring entries. We use this feature to collect most of the
* state for each cryptographic request into one spot. Other than
* ring entries only the ``particle descriptors'' (scatter/gather
* lists) and the actual operand data are kept separate. The
* particle descriptors must also be organized in rings. The
* operand data can be located aribtrarily (modulo alignment constraints).
*
* Note that the descriptor ring is mapped onto the PCI bus so
* the hardware can DMA data. This means the entire ring must be
* contiguous.
*/
struct safe_ringentry {
struct safe_desc re_desc; /* command descriptor */
struct safe_sarec re_sa; /* SA record */
struct safe_sastate re_sastate; /* SA state record */
struct cryptop *re_crp; /* crypto operation */
struct safe_operand re_src; /* source operand */
struct safe_operand re_dst; /* destination operand */
int re_sesn; /* crypto session ID */
int re_flags;
#define SAFE_QFLAGS_COPYOUTIV 0x1 /* copy back on completion */
#define SAFE_QFLAGS_COPYOUTICV 0x2 /* copy back on completion */
};
#define re_src_skb re_src.u.skb
#define re_src_io re_src.u.io
#define re_src_map re_src.map
#define re_src_nsegs re_src.nsegs
#define re_src_segs re_src.segs
#define re_src_mapsize re_src.mapsize
#define re_dst_skb re_dst.u.skb
#define re_dst_io re_dst.u.io
#define re_dst_map re_dst.map
#define re_dst_nsegs re_dst.nsegs
#define re_dst_segs re_dst.segs
#define re_dst_mapsize re_dst.mapsize
struct rndstate_test;
struct safe_session {
u_int32_t ses_used;
u_int32_t ses_klen; /* key length in bits */
u_int32_t ses_key[8]; /* DES/3DES/AES key */
u_int32_t ses_mlen; /* hmac length in bytes */
u_int32_t ses_hminner[5]; /* hmac inner state */
u_int32_t ses_hmouter[5]; /* hmac outer state */
u_int32_t ses_iv[4]; /* DES/3DES/AES iv */
};
struct safe_pkq {
struct list_head pkq_list;
struct cryptkop *pkq_krp;
};
struct safe_softc {
softc_device_decl sc_dev;
u32 sc_irq;
struct pci_dev *sc_pcidev;
ocf_iomem_t sc_base_addr;
u_int sc_chiprev; /* major/minor chip revision */
int sc_flags; /* device specific flags */
#define SAFE_FLAGS_KEY 0x01 /* has key accelerator */
#define SAFE_FLAGS_RNG 0x02 /* hardware rng */
int sc_suspended;
int sc_needwakeup; /* notify crypto layer */
int32_t sc_cid; /* crypto tag */
struct safe_dma_alloc sc_ringalloc; /* PE ring allocation state */
struct safe_ringentry *sc_ring; /* PE ring */
struct safe_ringentry *sc_ringtop; /* PE ring top */
struct safe_ringentry *sc_front; /* next free entry */
struct safe_ringentry *sc_back; /* next pending entry */
int sc_nqchip; /* # passed to chip */
spinlock_t sc_ringmtx; /* PE ring lock */
struct safe_pdesc *sc_spring; /* src particle ring */
struct safe_pdesc *sc_springtop; /* src particle ring top */
struct safe_pdesc *sc_spfree; /* next free src particle */
struct safe_dma_alloc sc_spalloc; /* src particle ring state */
struct safe_pdesc *sc_dpring; /* dest particle ring */
struct safe_pdesc *sc_dpringtop; /* dest particle ring top */
struct safe_pdesc *sc_dpfree; /* next free dest particle */
struct safe_dma_alloc sc_dpalloc; /* dst particle ring state */
int sc_nsessions; /* # of sessions */
struct safe_session *sc_sessions; /* sessions */
struct timer_list sc_pkto; /* PK polling */
spinlock_t sc_pkmtx; /* PK lock */
struct list_head sc_pkq; /* queue of PK requests */
struct safe_pkq *sc_pkq_cur; /* current processing request */
u_int32_t sc_pk_reslen, sc_pk_resoff;
int sc_max_dsize; /* maximum safe DMA size */
};
#endif /* __KERNEL__ */
struct safe_stats {
u_int64_t st_ibytes;
u_int64_t st_obytes;
u_int32_t st_ipackets;
u_int32_t st_opackets;
u_int32_t st_invalid; /* invalid argument */
u_int32_t st_badsession; /* invalid session id */
u_int32_t st_badflags; /* flags indicate !(mbuf | uio) */
u_int32_t st_nodesc; /* op submitted w/o descriptors */
u_int32_t st_badalg; /* unsupported algorithm */
u_int32_t st_ringfull; /* PE descriptor ring full */
u_int32_t st_peoperr; /* PE marked error */
u_int32_t st_dmaerr; /* PE DMA error */
u_int32_t st_bypasstoobig; /* bypass > 96 bytes */
u_int32_t st_skipmismatch; /* enc part begins before auth part */
u_int32_t st_lenmismatch; /* enc length different auth length */
u_int32_t st_coffmisaligned; /* crypto offset not 32-bit aligned */
u_int32_t st_cofftoobig; /* crypto offset > 255 words */
u_int32_t st_iovmisaligned; /* iov op not aligned */
u_int32_t st_iovnotuniform; /* iov op not suitable */
u_int32_t st_unaligned; /* unaligned src caused copy */
u_int32_t st_notuniform; /* non-uniform src caused copy */
u_int32_t st_nomap; /* bus_dmamap_create failed */
u_int32_t st_noload; /* bus_dmamap_load_* failed */
u_int32_t st_nombuf; /* MGET* failed */
u_int32_t st_nomcl; /* MCLGET* failed */
u_int32_t st_maxqchip; /* max mcr1 ops out for processing */
u_int32_t st_rng; /* RNG requests */
u_int32_t st_rngalarm; /* RNG alarm requests */
u_int32_t st_noicvcopy; /* ICV data copies suppressed */
};
#endif /* _SAFE_SAFEVAR_H_ */
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