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Diffstat (limited to 'target/linux/generic/files/crypto/ocf/safe/safevar.h')
| -rw-r--r-- | target/linux/generic/files/crypto/ocf/safe/safevar.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/target/linux/generic/files/crypto/ocf/safe/safevar.h b/target/linux/generic/files/crypto/ocf/safe/safevar.h new file mode 100644 index 000000000..11d8304aa --- /dev/null +++ b/target/linux/generic/files/crypto/ocf/safe/safevar.h @@ -0,0 +1,229 @@ +/*- + * 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 */ +}; + +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_ */ |