--- /dev/null
+/*-
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * BSD LICENSE
+ *
+ * Copyright 2008-2016 Freescale Semiconductor Inc.
+ * Copyright (c) 2016 NXP.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of the above-listed copyright holders nor the
+ * names of any contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDERS 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.
+ */
+
+#ifndef __DESC_ALGO_H__
+#define __DESC_ALGO_H__
+
+#include "hw/rta.h"
+#include "common.h"
+
+/**
+ * DOC: Algorithms - Shared Descriptor Constructors
+ *
+ * Shared descriptors for algorithms (i.e. not for protocols).
+ */
+
+/**
+ * cnstr_shdsc_snow_f8 - SNOW/f8 (UEA2) as a shared descriptor
+ * @descbuf: pointer to descriptor-under-construction buffer
+ * @ps: if 36/40bit addressing is desired, this parameter must be true
+ * @swap: must be true when core endianness doesn't match SEC endianness
+ * @cipherdata: pointer to block cipher transform definitions
+ * @dir: Cipher direction (DIR_ENC/DIR_DEC)
+ * @count: UEA2 count value (32 bits)
+ * @bearer: UEA2 bearer ID (5 bits)
+ * @direction: UEA2 direction (1 bit)
+ *
+ * Return: size of descriptor written in words or negative number on error
+ */
+static inline int
+cnstr_shdsc_snow_f8(uint32_t *descbuf, bool ps, bool swap,
+ struct alginfo *cipherdata, uint8_t dir,
+ uint32_t count, uint8_t bearer, uint8_t direction)
+{
+ struct program prg;
+ struct program *p = &prg;
+ uint32_t ct = count;
+ uint8_t br = bearer;
+ uint8_t dr = direction;
+ uint32_t context[2] = {ct, (br << 27) | (dr << 26)};
+
+ PROGRAM_CNTXT_INIT(p, descbuf, 0);
+ if (swap) {
+ PROGRAM_SET_BSWAP(p);
+
+ context[0] = swab32(context[0]);
+ context[1] = swab32(context[1]);
+ }
+
+ if (ps)
+ PROGRAM_SET_36BIT_ADDR(p);
+ SHR_HDR(p, SHR_ALWAYS, 1, 0);
+
+ KEY(p, KEY1, cipherdata->key_enc_flags, cipherdata->key,
+ cipherdata->keylen, INLINE_KEY(cipherdata));
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQINSZ, 4, 0);
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQOUTSZ, 4, 0);
+ ALG_OPERATION(p, OP_ALG_ALGSEL_SNOW_F8, OP_ALG_AAI_F8,
+ OP_ALG_AS_INITFINAL, 0, dir);
+ LOAD(p, (uintptr_t)context, CONTEXT1, 0, 8, IMMED | COPY);
+ SEQFIFOLOAD(p, MSG1, 0, VLF | LAST1);
+ SEQFIFOSTORE(p, MSG, 0, 0, VLF);
+
+ return PROGRAM_FINALIZE(p);
+}
+
+/**
+ * cnstr_shdsc_snow_f9 - SNOW/f9 (UIA2) as a shared descriptor
+ * @descbuf: pointer to descriptor-under-construction buffer
+ * @ps: if 36/40bit addressing is desired, this parameter must be true
+ * @swap: must be true when core endianness doesn't match SEC endianness
+ * @authdata: pointer to authentication transform definitions
+ * @dir: cipher direction (DIR_ENC/DIR_DEC)
+ * @count: UEA2 count value (32 bits)
+ * @fresh: UEA2 fresh value ID (32 bits)
+ * @direction: UEA2 direction (1 bit)
+ * @datalen: size of data
+ *
+ * Return: size of descriptor written in words or negative number on error
+ */
+static inline int
+cnstr_shdsc_snow_f9(uint32_t *descbuf, bool ps, bool swap,
+ struct alginfo *authdata, uint8_t dir, uint32_t count,
+ uint32_t fresh, uint8_t direction, uint32_t datalen)
+{
+ struct program prg;
+ struct program *p = &prg;
+ uint64_t ct = count;
+ uint64_t fr = fresh;
+ uint64_t dr = direction;
+ uint64_t context[2];
+
+ context[0] = (ct << 32) | (dr << 26);
+ context[1] = fr << 32;
+
+ PROGRAM_CNTXT_INIT(p, descbuf, 0);
+ if (swap) {
+ PROGRAM_SET_BSWAP(p);
+
+ context[0] = swab64(context[0]);
+ context[1] = swab64(context[1]);
+ }
+ if (ps)
+ PROGRAM_SET_36BIT_ADDR(p);
+ SHR_HDR(p, SHR_ALWAYS, 1, 0);
+
+ KEY(p, KEY2, authdata->key_enc_flags, authdata->key, authdata->keylen,
+ INLINE_KEY(authdata));
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQINSZ, 4, 0);
+ ALG_OPERATION(p, OP_ALG_ALGSEL_SNOW_F9, OP_ALG_AAI_F9,
+ OP_ALG_AS_INITFINAL, 0, dir);
+ LOAD(p, (uintptr_t)context, CONTEXT2, 0, 16, IMMED | COPY);
+ SEQFIFOLOAD(p, BIT_DATA, datalen, CLASS2 | LAST2);
+ /* Save lower half of MAC out into a 32-bit sequence */
+ SEQSTORE(p, CONTEXT2, 0, 4, 0);
+
+ return PROGRAM_FINALIZE(p);
+}
+
+/**
+ * cnstr_shdsc_blkcipher - block cipher transformation
+ * @descbuf: pointer to descriptor-under-construction buffer
+ * @ps: if 36/40bit addressing is desired, this parameter must be true
+ * @swap: must be true when core endianness doesn't match SEC endianness
+ * @cipherdata: pointer to block cipher transform definitions
+ * @iv: IV data; if NULL, "ivlen" bytes from the input frame will be read as IV
+ * @ivlen: IV length
+ * @dir: DIR_ENC/DIR_DEC
+ *
+ * Return: size of descriptor written in words or negative number on error
+ */
+static inline int
+cnstr_shdsc_blkcipher(uint32_t *descbuf, bool ps, bool swap,
+ struct alginfo *cipherdata, uint8_t *iv,
+ uint32_t ivlen, uint8_t dir)
+{
+ struct program prg;
+ struct program *p = &prg;
+ const bool is_aes_dec = (dir == DIR_DEC) &&
+ (cipherdata->algtype == OP_ALG_ALGSEL_AES);
+ LABEL(keyjmp);
+ LABEL(skipdk);
+ REFERENCE(pkeyjmp);
+ REFERENCE(pskipdk);
+
+ PROGRAM_CNTXT_INIT(p, descbuf, 0);
+ if (swap)
+ PROGRAM_SET_BSWAP(p);
+ if (ps)
+ PROGRAM_SET_36BIT_ADDR(p);
+ SHR_HDR(p, SHR_SERIAL, 1, SC);
+
+ pkeyjmp = JUMP(p, keyjmp, LOCAL_JUMP, ALL_TRUE, SHRD);
+ /* Insert Key */
+ KEY(p, KEY1, cipherdata->key_enc_flags, cipherdata->key,
+ cipherdata->keylen, INLINE_KEY(cipherdata));
+
+ if (is_aes_dec) {
+ ALG_OPERATION(p, cipherdata->algtype, cipherdata->algmode,
+ OP_ALG_AS_INITFINAL, ICV_CHECK_DISABLE, dir);
+
+ pskipdk = JUMP(p, skipdk, LOCAL_JUMP, ALL_TRUE, 0);
+ }
+ SET_LABEL(p, keyjmp);
+
+ if (is_aes_dec) {
+ ALG_OPERATION(p, OP_ALG_ALGSEL_AES, cipherdata->algmode |
+ OP_ALG_AAI_DK, OP_ALG_AS_INITFINAL,
+ ICV_CHECK_DISABLE, dir);
+ SET_LABEL(p, skipdk);
+ } else {
+ ALG_OPERATION(p, cipherdata->algtype, cipherdata->algmode,
+ OP_ALG_AS_INITFINAL, ICV_CHECK_DISABLE, dir);
+ }
+
+ if (iv)
+ /* IV load, convert size */
+ LOAD(p, (uintptr_t)iv, CONTEXT1, 0, ivlen, IMMED | COPY);
+ else
+ /* IV is present first before the actual message */
+ SEQLOAD(p, CONTEXT1, 0, ivlen, 0);
+
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQINSZ, 4, 0);
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQOUTSZ, 4, 0);
+
+ /* Insert sequence load/store with VLF */
+ SEQFIFOLOAD(p, MSG1, 0, VLF | LAST1);
+ SEQFIFOSTORE(p, MSG, 0, 0, VLF);
+
+ PATCH_JUMP(p, pkeyjmp, keyjmp);
+ if (is_aes_dec)
+ PATCH_JUMP(p, pskipdk, skipdk);
+
+ return PROGRAM_FINALIZE(p);
+}
+
+/**
+ * cnstr_shdsc_hmac - HMAC shared
+ * @descbuf: pointer to descriptor-under-construction buffer
+ * @ps: if 36/40bit addressing is desired, this parameter must be true
+ * @swap: must be true when core endianness doesn't match SEC endianness
+ * @authdata: pointer to authentication transform definitions;
+ * message digest algorithm: OP_ALG_ALGSEL_MD5/ SHA1-512.
+ * @do_icv: 0 if ICV checking is not desired, any other value if ICV checking
+ * is needed for all the packets processed by this shared descriptor
+ * @trunc_len: Length of the truncated ICV to be written in the output buffer, 0
+ * if no truncation is needed
+ *
+ * Note: There's no support for keys longer than the block size of the
+ * underlying hash function, according to the selected algorithm.
+ *
+ * Return: size of descriptor written in words or negative number on error
+ */
+static inline int
+cnstr_shdsc_hmac(uint32_t *descbuf, bool ps, bool swap,
+ struct alginfo *authdata, uint8_t do_icv,
+ uint8_t trunc_len)
+{
+ struct program prg;
+ struct program *p = &prg;
+ uint8_t storelen, opicv, dir;
+ LABEL(keyjmp);
+ LABEL(jmpprecomp);
+ REFERENCE(pkeyjmp);
+ REFERENCE(pjmpprecomp);
+
+ /* Compute fixed-size store based on alg selection */
+ switch (authdata->algtype) {
+ case OP_ALG_ALGSEL_MD5:
+ storelen = 16;
+ break;
+ case OP_ALG_ALGSEL_SHA1:
+ storelen = 20;
+ break;
+ case OP_ALG_ALGSEL_SHA224:
+ storelen = 28;
+ break;
+ case OP_ALG_ALGSEL_SHA256:
+ storelen = 32;
+ break;
+ case OP_ALG_ALGSEL_SHA384:
+ storelen = 48;
+ break;
+ case OP_ALG_ALGSEL_SHA512:
+ storelen = 64;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ trunc_len = trunc_len && (trunc_len < storelen) ? trunc_len : storelen;
+
+ opicv = do_icv ? ICV_CHECK_ENABLE : ICV_CHECK_DISABLE;
+ dir = do_icv ? DIR_DEC : DIR_ENC;
+
+ PROGRAM_CNTXT_INIT(p, descbuf, 0);
+ if (swap)
+ PROGRAM_SET_BSWAP(p);
+ if (ps)
+ PROGRAM_SET_36BIT_ADDR(p);
+ SHR_HDR(p, SHR_SERIAL, 1, SC);
+
+ pkeyjmp = JUMP(p, keyjmp, LOCAL_JUMP, ALL_TRUE, SHRD);
+ KEY(p, KEY2, authdata->key_enc_flags, authdata->key, authdata->keylen,
+ INLINE_KEY(authdata));
+
+ /* Do operation */
+ ALG_OPERATION(p, authdata->algtype, OP_ALG_AAI_HMAC,
+ OP_ALG_AS_INITFINAL, opicv, dir);
+
+ pjmpprecomp = JUMP(p, jmpprecomp, LOCAL_JUMP, ALL_TRUE, 0);
+ SET_LABEL(p, keyjmp);
+
+ ALG_OPERATION(p, authdata->algtype, OP_ALG_AAI_HMAC_PRECOMP,
+ OP_ALG_AS_INITFINAL, opicv, dir);
+
+ SET_LABEL(p, jmpprecomp);
+
+ /* compute sequences */
+ if (opicv == ICV_CHECK_ENABLE)
+ MATHB(p, SEQINSZ, SUB, trunc_len, VSEQINSZ, 4, IMMED2);
+ else
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQINSZ, 4, 0);
+
+ /* Do load (variable length) */
+ SEQFIFOLOAD(p, MSG2, 0, VLF | LAST2);
+
+ if (opicv == ICV_CHECK_ENABLE)
+ SEQFIFOLOAD(p, ICV2, trunc_len, LAST2);
+ else
+ SEQSTORE(p, CONTEXT2, 0, trunc_len, 0);
+
+ PATCH_JUMP(p, pkeyjmp, keyjmp);
+ PATCH_JUMP(p, pjmpprecomp, jmpprecomp);
+
+ return PROGRAM_FINALIZE(p);
+}
+
+/**
+ * cnstr_shdsc_kasumi_f8 - KASUMI F8 (Confidentiality) as a shared descriptor
+ * (ETSI "Document 1: f8 and f9 specification")
+ * @descbuf: pointer to descriptor-under-construction buffer
+ * @ps: if 36/40bit addressing is desired, this parameter must be true
+ * @swap: must be true when core endianness doesn't match SEC endianness
+ * @cipherdata: pointer to block cipher transform definitions
+ * @dir: cipher direction (DIR_ENC/DIR_DEC)
+ * @count: count value (32 bits)
+ * @bearer: bearer ID (5 bits)
+ * @direction: direction (1 bit)
+ *
+ * Return: size of descriptor written in words or negative number on error
+ */
+static inline int
+cnstr_shdsc_kasumi_f8(uint32_t *descbuf, bool ps, bool swap,
+ struct alginfo *cipherdata, uint8_t dir,
+ uint32_t count, uint8_t bearer, uint8_t direction)
+{
+ struct program prg;
+ struct program *p = &prg;
+ uint64_t ct = count;
+ uint64_t br = bearer;
+ uint64_t dr = direction;
+ uint32_t context[2] = { ct, (br << 27) | (dr << 26) };
+
+ PROGRAM_CNTXT_INIT(p, descbuf, 0);
+ if (swap) {
+ PROGRAM_SET_BSWAP(p);
+
+ context[0] = swab32(context[0]);
+ context[1] = swab32(context[1]);
+ }
+ if (ps)
+ PROGRAM_SET_36BIT_ADDR(p);
+ SHR_HDR(p, SHR_ALWAYS, 1, 0);
+
+ KEY(p, KEY1, cipherdata->key_enc_flags, cipherdata->key,
+ cipherdata->keylen, INLINE_KEY(cipherdata));
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQINSZ, 4, 0);
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQOUTSZ, 4, 0);
+ ALG_OPERATION(p, OP_ALG_ALGSEL_KASUMI, OP_ALG_AAI_F8,
+ OP_ALG_AS_INITFINAL, 0, dir);
+ LOAD(p, (uintptr_t)context, CONTEXT1, 0, 8, IMMED | COPY);
+ SEQFIFOLOAD(p, MSG1, 0, VLF | LAST1);
+ SEQFIFOSTORE(p, MSG, 0, 0, VLF);
+
+ return PROGRAM_FINALIZE(p);
+}
+
+/**
+ * cnstr_shdsc_kasumi_f9 - KASUMI F9 (Integrity) as a shared descriptor
+ * (ETSI "Document 1: f8 and f9 specification")
+ * @descbuf: pointer to descriptor-under-construction buffer
+ * @ps: if 36/40bit addressing is desired, this parameter must be true
+ * @swap: must be true when core endianness doesn't match SEC endianness
+ * @authdata: pointer to authentication transform definitions
+ * @dir: cipher direction (DIR_ENC/DIR_DEC)
+ * @count: count value (32 bits)
+ * @fresh: fresh value ID (32 bits)
+ * @direction: direction (1 bit)
+ * @datalen: size of data
+ *
+ * Return: size of descriptor written in words or negative number on error
+ */
+static inline int
+cnstr_shdsc_kasumi_f9(uint32_t *descbuf, bool ps, bool swap,
+ struct alginfo *authdata, uint8_t dir,
+ uint32_t count, uint32_t fresh, uint8_t direction,
+ uint32_t datalen)
+{
+ struct program prg;
+ struct program *p = &prg;
+ uint16_t ctx_offset = 16;
+ uint32_t context[6] = {count, direction << 26, fresh, 0, 0, 0};
+
+ PROGRAM_CNTXT_INIT(p, descbuf, 0);
+ if (swap) {
+ PROGRAM_SET_BSWAP(p);
+
+ context[0] = swab32(context[0]);
+ context[1] = swab32(context[1]);
+ context[2] = swab32(context[2]);
+ }
+ if (ps)
+ PROGRAM_SET_36BIT_ADDR(p);
+ SHR_HDR(p, SHR_ALWAYS, 1, 0);
+
+ KEY(p, KEY1, authdata->key_enc_flags, authdata->key, authdata->keylen,
+ INLINE_KEY(authdata));
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQINSZ, 4, 0);
+ ALG_OPERATION(p, OP_ALG_ALGSEL_KASUMI, OP_ALG_AAI_F9,
+ OP_ALG_AS_INITFINAL, 0, dir);
+ LOAD(p, (uintptr_t)context, CONTEXT1, 0, 24, IMMED | COPY);
+ SEQFIFOLOAD(p, BIT_DATA, datalen, CLASS1 | LAST1);
+ /* Save output MAC of DWORD 2 into a 32-bit sequence */
+ SEQSTORE(p, CONTEXT1, ctx_offset, 4, 0);
+
+ return PROGRAM_FINALIZE(p);
+}
+
+/**
+ * cnstr_shdsc_crc - CRC32 Accelerator (IEEE 802 CRC32 protocol mode)
+ * @descbuf: pointer to descriptor-under-construction buffer
+ * @swap: must be true when core endianness doesn't match SEC endianness
+ *
+ * Return: size of descriptor written in words or negative number on error
+ */
+static inline int
+cnstr_shdsc_crc(uint32_t *descbuf, bool swap)
+{
+ struct program prg;
+ struct program *p = &prg;
+
+ PROGRAM_CNTXT_INIT(p, descbuf, 0);
+ if (swap)
+ PROGRAM_SET_BSWAP(p);
+
+ SHR_HDR(p, SHR_ALWAYS, 1, 0);
+
+ MATHB(p, SEQINSZ, SUB, MATH2, VSEQINSZ, 4, 0);
+ ALG_OPERATION(p, OP_ALG_ALGSEL_CRC,
+ OP_ALG_AAI_802 | OP_ALG_AAI_DOC,
+ OP_ALG_AS_FINALIZE, 0, DIR_ENC);
+ SEQFIFOLOAD(p, MSG2, 0, VLF | LAST2);
+ SEQSTORE(p, CONTEXT2, 0, 4, 0);
+
+ return PROGRAM_FINALIZE(p);
+}
+
+#endif /* __DESC_ALGO_H__ */
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