219 lines
8.6 KiB
C
219 lines
8.6 KiB
C
/*-
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* Copyright (c) 2003 Sam Leffler, Errno Consulting
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* Copyright (c) 2003 Global Technology Associates, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SAFE_SAFEVAR_H_
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#define _SAFE_SAFEVAR_H_
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/* Maximum queue length */
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#ifndef SAFE_MAX_NQUEUE
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#define SAFE_MAX_NQUEUE 60
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#endif
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#define SAFE_MAX_PART 64 /* Maximum scatter/gather depth */
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#define SAFE_DMA_BOUNDARY 0 /* No boundary for source DMA ops */
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#define SAFE_MAX_DSIZE MCLBYTES /* Fixed scatter particle size */
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#define SAFE_MAX_SSIZE 0x0ffff /* Maximum gather particle size */
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#define SAFE_MAX_DMA 0xfffff /* Maximum PE operand size (20 bits) */
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/* total src+dst particle descriptors */
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#define SAFE_TOTAL_DPART (SAFE_MAX_NQUEUE * SAFE_MAX_PART)
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#define SAFE_TOTAL_SPART (SAFE_MAX_NQUEUE * SAFE_MAX_PART)
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#define SAFE_RNG_MAXBUFSIZ 128 /* 32-bit words */
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#define SAFE_CARD(sid) (((sid) & 0xf0000000) >> 28)
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#define SAFE_SESSION(sid) ( (sid) & 0x0fffffff)
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#define SAFE_SID(crd, sesn) (((crd) << 28) | ((sesn) & 0x0fffffff))
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#define SAFE_DEF_RTY 0xff /* PCI Retry Timeout */
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#define SAFE_DEF_TOUT 0xff /* PCI TRDY Timeout */
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#define SAFE_DEF_CACHELINE 0x01 /* Cache Line setting */
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#ifdef _KERNEL
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/*
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* State associated with the allocation of each chunk
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* of memory setup for DMA.
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*/
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struct safe_dma_alloc {
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u_int32_t dma_paddr; /* physical address */
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caddr_t dma_vaddr; /* virtual address */
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bus_dma_tag_t dma_tag; /* bus dma tag used */
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bus_dmamap_t dma_map; /* associated map */
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bus_dma_segment_t dma_seg;
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bus_size_t dma_size; /* mapped memory size (bytes) */
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int dma_nseg; /* number of segments */
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};
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/*
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* Cryptographic operand state. One of these exists for each
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* source and destination operand passed in from the crypto
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* subsystem. When possible source and destination operands
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* refer to the same memory. More often they are distinct.
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* We track the virtual address of each operand as well as
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* where each is mapped for DMA.
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*/
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struct safe_operand {
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union {
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struct mbuf *m;
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struct uio *io;
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} u;
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bus_dmamap_t map;
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bus_size_t mapsize;
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int nsegs;
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bus_dma_segment_t segs[SAFE_MAX_PART];
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};
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/*
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* Packet engine ring entry and cryptographic operation state.
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* The packet engine requires a ring of descriptors that contain
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* pointers to various cryptographic state. However the ring
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* configuration register allows you to specify an arbitrary size
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* for ring entries. We use this feature to collect most of the
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* state for each cryptographic request into one spot. Other than
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* ring entries only the ``particle descriptors'' (scatter/gather
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* lists) and the actual operand data are kept separate. The
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* particle descriptors must also be organized in rings. The
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* operand data can be located aribtrarily (modulo alignment constraints).
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*
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* Note that the descriptor ring is mapped onto the PCI bus so
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* the hardware can DMA data. This means the entire ring must be
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* contiguous.
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*/
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struct safe_ringentry {
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struct safe_desc re_desc; /* command descriptor */
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struct safe_sarec re_sa; /* SA record */
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struct safe_sastate re_sastate; /* SA state record */
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struct cryptop *re_crp; /* crypto operation */
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struct safe_operand re_src; /* source operand */
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struct safe_operand re_dst; /* destination operand */
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int re_sesn; /* crypto session ID */
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int re_flags;
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#define SAFE_QFLAGS_COPYOUTIV 0x1 /* copy back on completion */
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#define SAFE_QFLAGS_COPYOUTICV 0x2 /* copy back on completion */
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};
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#define re_src_m re_src.u.m
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#define re_src_io re_src.u.io
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#define re_src_map re_src.map
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#define re_src_nsegs re_src.nsegs
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#define re_src_segs re_src.segs
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#define re_src_mapsize re_src.mapsize
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#define re_dst_m re_dst.u.m
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#define re_dst_io re_dst.u.io
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#define re_dst_map re_dst.map
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#define re_dst_nsegs re_dst.nsegs
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#define re_dst_segs re_dst.segs
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#define re_dst_mapsize re_dst.mapsize
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struct rndstate_test;
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struct safe_session {
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u_int32_t ses_used;
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u_int32_t ses_klen; /* key length in bits */
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u_int32_t ses_key[8]; /* DES/3DES/AES key */
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u_int32_t ses_hminner[5]; /* hmac inner state */
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u_int32_t ses_hmouter[5]; /* hmac outer state */
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u_int32_t ses_iv[4]; /* DES/3DES/AES iv */
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};
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struct safe_softc {
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device_t sc_dev; /* device backpointer */
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struct resource *sc_irq;
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void *sc_ih; /* interrupt handler cookie */
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bus_space_handle_t sc_sh; /* memory handle */
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bus_space_tag_t sc_st; /* memory tag */
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struct resource *sc_sr; /* memory resource */
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bus_dma_tag_t sc_srcdmat; /* source dma tag */
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bus_dma_tag_t sc_dstdmat; /* destination dma tag */
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u_int sc_chiprev; /* major/minor chip revision */
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int sc_flags; /* device specific flags */
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#define SAFE_FLAGS_KEY 0x01 /* has key accelerator */
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#define SAFE_FLAGS_RNG 0x02 /* hardware rng */
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int sc_suspended;
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int sc_needwakeup; /* notify crypto layer */
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int32_t sc_cid; /* crypto tag */
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struct safe_dma_alloc sc_ringalloc; /* PE ring allocation state */
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struct safe_ringentry *sc_ring; /* PE ring */
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struct safe_ringentry *sc_ringtop; /* PE ring top */
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struct safe_ringentry *sc_front; /* next free entry */
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struct safe_ringentry *sc_back; /* next pending entry */
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int sc_nqchip; /* # passed to chip */
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struct mtx sc_ringmtx; /* PE ring lock */
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struct safe_pdesc *sc_spring; /* src particle ring */
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struct safe_pdesc *sc_springtop; /* src particle ring top */
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struct safe_pdesc *sc_spfree; /* next free src particle */
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struct safe_dma_alloc sc_spalloc; /* src particle ring state */
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struct safe_pdesc *sc_dpring; /* dest particle ring */
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struct safe_pdesc *sc_dpringtop; /* dest particle ring top */
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struct safe_pdesc *sc_dpfree; /* next free dest particle */
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struct safe_dma_alloc sc_dpalloc; /* dst particle ring state */
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int sc_nsessions; /* # of sessions */
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struct safe_session *sc_sessions; /* sessions */
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struct callout sc_rngto; /* rng timeout */
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struct rndtest_state *sc_rndtest; /* RNG test state */
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void (*sc_harvest)(struct rndtest_state *,
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void *, u_int);
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};
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#endif /* _KERNEL */
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struct safe_stats {
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u_int64_t st_ibytes;
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u_int64_t st_obytes;
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u_int32_t st_ipackets;
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u_int32_t st_opackets;
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u_int32_t st_invalid; /* invalid argument */
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u_int32_t st_badsession; /* invalid session id */
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u_int32_t st_badflags; /* flags indicate !(mbuf | uio) */
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u_int32_t st_nodesc; /* op submitted w/o descriptors */
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u_int32_t st_badalg; /* unsupported algorithm */
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u_int32_t st_ringfull; /* PE descriptor ring full */
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u_int32_t st_peoperr; /* PE marked error */
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u_int32_t st_dmaerr; /* PE DMA error */
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u_int32_t st_bypasstoobig; /* bypass > 96 bytes */
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u_int32_t st_skipmismatch; /* enc part begins before auth part */
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u_int32_t st_lenmismatch; /* enc length different auth length */
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u_int32_t st_coffmisaligned; /* crypto offset not 32-bit aligned */
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u_int32_t st_cofftoobig; /* crypto offset > 255 words */
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u_int32_t st_iovmisaligned; /* iov op not aligned */
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u_int32_t st_iovnotuniform; /* iov op not suitable */
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u_int32_t st_unaligned; /* unaligned src caused copy */
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u_int32_t st_notuniform; /* non-uniform src caused copy */
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u_int32_t st_nomap; /* bus_dmamap_create failed */
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u_int32_t st_noload; /* bus_dmamap_load_* failed */
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u_int32_t st_nombuf; /* MGET* failed */
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u_int32_t st_nomcl; /* MCLGET* failed */
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u_int32_t st_maxqchip; /* max mcr1 ops out for processing */
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u_int32_t st_rng; /* RNG requests */
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u_int32_t st_rngalarm; /* RNG alarm requests */
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u_int32_t st_noicvcopy; /* ICV data copies suppressed */
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};
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#endif /* _SAFE_SAFEVAR_H_ */
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