1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2003 Sam Leffler, Errno Consulting 5 * Copyright (c) 2003 Global Technology Associates, Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 #ifndef _SAFE_SAFEVAR_H_ 32 #define _SAFE_SAFEVAR_H_ 33 34 /* Maximum queue length */ 35 #ifndef SAFE_MAX_NQUEUE 36 #define SAFE_MAX_NQUEUE 60 37 #endif 38 39 #define SAFE_MAX_PART 64 /* Maximum scatter/gather depth */ 40 #define SAFE_DMA_BOUNDARY 0 /* No boundary for source DMA ops */ 41 #define SAFE_MAX_DSIZE MCLBYTES /* Fixed scatter particle size */ 42 #define SAFE_MAX_SSIZE 0x0ffff /* Maximum gather particle size */ 43 #define SAFE_MAX_DMA 0xfffff /* Maximum PE operand size (20 bits) */ 44 /* total src+dst particle descriptors */ 45 #define SAFE_TOTAL_DPART (SAFE_MAX_NQUEUE * SAFE_MAX_PART) 46 #define SAFE_TOTAL_SPART (SAFE_MAX_NQUEUE * SAFE_MAX_PART) 47 48 #define SAFE_RNG_MAXBUFSIZ 128 /* 32-bit words */ 49 50 #define SAFE_DEF_RTY 0xff /* PCI Retry Timeout */ 51 #define SAFE_DEF_TOUT 0xff /* PCI TRDY Timeout */ 52 #define SAFE_DEF_CACHELINE 0x01 /* Cache Line setting */ 53 54 #ifdef _KERNEL 55 /* 56 * State associated with the allocation of each chunk 57 * of memory setup for DMA. 58 */ 59 struct safe_dma_alloc { 60 u_int32_t dma_paddr; /* physical address */ 61 caddr_t dma_vaddr; /* virtual address */ 62 bus_dma_tag_t dma_tag; /* bus dma tag used */ 63 bus_dmamap_t dma_map; /* associated map */ 64 bus_dma_segment_t dma_seg; 65 bus_size_t dma_size; /* mapped memory size (bytes) */ 66 int dma_nseg; /* number of segments */ 67 }; 68 69 /* 70 * Cryptographic operand state. One of these exists for each 71 * source and destination operand passed in from the crypto 72 * subsystem. When possible source and destination operands 73 * refer to the same memory. More often they are distinct. 74 * We track the virtual address of each operand as well as 75 * where each is mapped for DMA. 76 */ 77 struct safe_operand { 78 bus_dmamap_t map; 79 bus_size_t mapsize; 80 int nsegs; 81 bus_dma_segment_t segs[SAFE_MAX_PART]; 82 }; 83 84 /* 85 * Packet engine ring entry and cryptographic operation state. 86 * The packet engine requires a ring of descriptors that contain 87 * pointers to various cryptographic state. However the ring 88 * configuration register allows you to specify an arbitrary size 89 * for ring entries. We use this feature to collect most of the 90 * state for each cryptographic request into one spot. Other than 91 * ring entries only the ``particle descriptors'' (scatter/gather 92 * lists) and the actual operand data are kept separate. The 93 * particle descriptors must also be organized in rings. The 94 * operand data can be located aribtrarily (modulo alignment constraints). 95 * 96 * Note that the descriptor ring is mapped onto the PCI bus so 97 * the hardware can DMA data. This means the entire ring must be 98 * contiguous. 99 */ 100 struct safe_ringentry { 101 struct safe_desc re_desc; /* command descriptor */ 102 struct safe_sarec re_sa; /* SA record */ 103 struct safe_sastate re_sastate; /* SA state record */ 104 struct cryptop *re_crp; /* crypto operation */ 105 106 struct safe_operand re_src; /* source operand */ 107 struct safe_operand re_dst; /* destination operand */ 108 struct mbuf *re_dst_m; 109 110 int unused; 111 int re_flags; 112 #define SAFE_QFLAGS_COPYOUTICV 0x2 /* copy back on completion */ 113 }; 114 115 #define re_src_map re_src.map 116 #define re_src_nsegs re_src.nsegs 117 #define re_src_segs re_src.segs 118 #define re_src_mapsize re_src.mapsize 119 120 #define re_dst_map re_dst.map 121 #define re_dst_nsegs re_dst.nsegs 122 #define re_dst_segs re_dst.segs 123 #define re_dst_mapsize re_dst.mapsize 124 125 struct rndstate_test; 126 127 struct safe_session { 128 u_int32_t ses_klen; /* key length in bits */ 129 u_int32_t ses_key[8]; /* DES/3DES/AES key */ 130 u_int32_t ses_mlen; /* hmac length in bytes */ 131 u_int32_t ses_hminner[5]; /* hmac inner state */ 132 u_int32_t ses_hmouter[5]; /* hmac outer state */ 133 }; 134 135 struct safe_softc { 136 device_t sc_dev; /* device backpointer */ 137 struct resource *sc_irq; 138 void *sc_ih; /* interrupt handler cookie */ 139 bus_space_handle_t sc_sh; /* memory handle */ 140 bus_space_tag_t sc_st; /* memory tag */ 141 struct resource *sc_sr; /* memory resource */ 142 bus_dma_tag_t sc_srcdmat; /* source dma tag */ 143 bus_dma_tag_t sc_dstdmat; /* destination dma tag */ 144 u_int sc_chiprev; /* major/minor chip revision */ 145 int sc_flags; /* device specific flags */ 146 #define SAFE_FLAGS_KEY 0x01 /* has key accelerator */ 147 #define SAFE_FLAGS_RNG 0x02 /* hardware rng */ 148 int sc_suspended; 149 int sc_needwakeup; /* notify crypto layer */ 150 int32_t sc_cid; /* crypto tag */ 151 uint32_t sc_devinfo; 152 struct safe_dma_alloc sc_ringalloc; /* PE ring allocation state */ 153 struct safe_ringentry *sc_ring; /* PE ring */ 154 struct safe_ringentry *sc_ringtop; /* PE ring top */ 155 struct safe_ringentry *sc_front; /* next free entry */ 156 struct safe_ringentry *sc_back; /* next pending entry */ 157 int sc_nqchip; /* # passed to chip */ 158 struct mtx sc_ringmtx; /* PE ring lock */ 159 struct safe_pdesc *sc_spring; /* src particle ring */ 160 struct safe_pdesc *sc_springtop; /* src particle ring top */ 161 struct safe_pdesc *sc_spfree; /* next free src particle */ 162 struct safe_dma_alloc sc_spalloc; /* src particle ring state */ 163 struct safe_pdesc *sc_dpring; /* dest particle ring */ 164 struct safe_pdesc *sc_dpringtop; /* dest particle ring top */ 165 struct safe_pdesc *sc_dpfree; /* next free dest particle */ 166 struct safe_dma_alloc sc_dpalloc; /* dst particle ring state */ 167 168 struct callout sc_rngto; /* rng timeout */ 169 struct rndtest_state *sc_rndtest; /* RNG test state */ 170 void (*sc_harvest)(struct rndtest_state *, 171 void *, u_int); 172 }; 173 #endif /* _KERNEL */ 174 175 struct safe_stats { 176 u_int64_t st_ibytes; 177 u_int64_t st_obytes; 178 u_int32_t st_ipackets; 179 u_int32_t st_opackets; 180 u_int32_t st_invalid; /* invalid argument */ 181 u_int32_t st_badsession; /* invalid session id */ 182 u_int32_t st_badflags; /* flags indicate !(mbuf | uio) */ 183 u_int32_t st_nodesc; /* op submitted w/o descriptors */ 184 u_int32_t st_badalg; /* unsupported algorithm */ 185 u_int32_t st_ringfull; /* PE descriptor ring full */ 186 u_int32_t st_peoperr; /* PE marked error */ 187 u_int32_t st_dmaerr; /* PE DMA error */ 188 u_int32_t st_bypasstoobig; /* bypass > 96 bytes */ 189 u_int32_t st_skipmismatch; /* enc part begins before auth part */ 190 u_int32_t st_lenmismatch; /* enc length different auth length */ 191 u_int32_t st_coffmisaligned; /* crypto offset not 32-bit aligned */ 192 u_int32_t st_cofftoobig; /* crypto offset > 255 words */ 193 u_int32_t st_iovmisaligned; /* iov op not aligned */ 194 u_int32_t st_iovnotuniform; /* iov op not suitable */ 195 u_int32_t st_unaligned; /* unaligned src caused copy */ 196 u_int32_t st_notuniform; /* non-uniform src caused copy */ 197 u_int32_t st_nomap; /* bus_dmamap_create failed */ 198 u_int32_t st_noload; /* bus_dmamap_load_* failed */ 199 u_int32_t st_nombuf; /* MGET* failed */ 200 u_int32_t st_nomcl; /* MCLGET* failed */ 201 u_int32_t st_maxqchip; /* max mcr1 ops out for processing */ 202 u_int32_t st_rng; /* RNG requests */ 203 u_int32_t st_rngalarm; /* RNG alarm requests */ 204 u_int32_t st_noicvcopy; /* ICV data copies suppressed */ 205 }; 206 #endif /* _SAFE_SAFEVAR_H_ */ 207