/* $NetBSD: hifn7751var.h,v 1.18 2021/12/03 13:27:38 andvar Exp $ */ /* $OpenBSD: hifn7751var.h,v 1.54 2020/01/11 21:34:04 cheloha 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 __DEV_PCI_HIFN7751VAR_H__ #define __DEV_PCI_HIFN7751VAR_H__ #ifdef _KERNEL #include <sys/rndsource.h> /* * Some configurable values for the driver */ #define HIFN_D_CMD_RSIZE 24 /* command descriptors */ #define HIFN_D_SRC_RSIZE 80 /* source descriptors */ #define HIFN_D_DST_RSIZE 80 /* destination descriptors */ #define HIFN_D_RES_RSIZE 24 /* result 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 accommodate 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 descriptor * rings. */ int cmdi, srci, dsti, resi; volatile int cmdu, srcu, dstu, resu; int cmdk, srck, dstk, resk; }; #define HIFN_RING_SYNC(sc, r, i, f) \ bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, \ offsetof(struct hifn_dma, r[i]), sizeof(struct hifn_desc), (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) \ bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, \ offsetof(struct hifn_dma, command_bufs[(i)][0]), \ HIFN_MAX_COMMAND, (f)) #define HIFN_RES_SYNC(sc, i, f) \ bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap, \ offsetof(struct hifn_dma, result_bufs[(i)][0]), \ HIFN_MAX_RESULT, (f)) /* * Holds data specific to a single HIFN board. */ struct hifn_softc { device_t sc_dv; /* generic device */ void * sc_ih; /* interrupt handler cookie */ u_int32_t sc_dmaier; u_int32_t sc_drammodel; /* 1=dram, 0=sram */ bus_space_handle_t sc_sh0, sc_sh1; bus_space_tag_t sc_st0, sc_st1; bus_size_t sc_iosz0, sc_iosz1; bus_dma_tag_t sc_dmat; struct pool_cache *sc_cmd_cache; struct hifn_dma *sc_dma; bus_dmamap_t sc_dmamap; bus_dma_segment_t sc_dmasegs[1]; int sc_dmansegs; int32_t sc_cid; int sc_maxses; int sc_nsessions; int sc_ramsize; int sc_flags; #define HIFN_HAS_RNG 0x01 /* includes random number generator */ #define HIFN_HAS_PUBLIC 0x02 /* includes public key support */ #define HIFN_IS_7811 0x04 /* Hifn 7811 part */ #define HIFN_NO_BURSTWRITE 0x08 /* can't handle PCI burst writes */ #define HIFN_HAS_LEDS 0x10 /* Has LEDs to blink */ #define HIFN_HAS_AES 0x20 /* includes AES support */ #define HIFN_IS_7956 0x40 /* Hifn 7955/7956 part */ struct timeval sc_rngboottime; /* time we flipped RNG on */ struct callout sc_rngto; /* rng timeout */ struct callout sc_tickto; /* led-clear timeout */ krndsource_t sc_rnd_source; unsigned sc_rng_needbits; /* how many bits wanted */ 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 waiting on resources */ uint8_t sc_sessions[2048/NBBY]; pci_chipset_tag_t sc_pci_pc; pcitag_t sc_pci_tag; bus_size_t sc_waw_lastreg; int sc_waw_lastgroup; kmutex_t sc_mtx; }; #define HIFN_RNG_BITSPER 17 /* From Hifn 6500 paper: 0.06 bits of entropy per RNG register bit worst-case */ #define WRITE_REG_0(sc,reg,val) hifn_write_4((sc), 0, (reg), (val)) #define WRITE_REG_1(sc,reg,val) hifn_write_4((sc), 1, (reg), (val)) #define READ_REG_0(sc,reg) hifn_read_4((sc), 0, (reg)) #define READ_REG_1(sc,reg) hifn_read_4((sc), 1, (reg)) #define SET_LED(sc,v) \ if (sc->sc_flags & HIFN_HAS_LEDS) \ WRITE_REG_1(sc, HIFN_1_7811_MIPSRST, \ READ_REG_1(sc, HIFN_1_7811_MIPSRST) | (v)) #define CLR_LED(sc,v) \ if (sc->sc_flags & HIFN_HAS_LEDS) \ WRITE_REG_1(sc, HIFN_1_7811_MIPSRST, \ READ_REG_1(sc, HIFN_1_7811_MIPSRST) & ~(v)) /* * struct hifn_command * * 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, 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_command { u_int16_t session_num; u_int16_t base_masks, cry_masks, mac_masks, comp_masks; u_int8_t iv[HIFN_MAX_IV_LENGTH], *ck, mac[HIFN_MAC_KEY_LENGTH]; int cklen; int sloplen, slopidx; union { struct mbuf *src_m; struct uio *src_io; } srcu; bus_dmamap_t src_map; union { struct mbuf *dst_m; struct uio *dst_io; } dstu; bus_dmamap_t dst_map; bus_dmamap_t dst_map_alloc; struct hifn_softc *softc; struct cryptop *crp; struct cryptodesc *enccrd, *maccrd, *compcrd; void (*cmd_callback)(struct hifn_softc *, struct hifn_command *, uint8_t *); }; /* * 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; u_int32_t hst_abort; }; #endif /* __DEV_PCI_HIFN7751VAR_H__ */
