You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
openwrt/target/linux/layerscape/patches-5.4/804-crypto-0028-crypto-caam...

1049 lines
34 KiB
Diff

From 47824cc9417946b49b80e88c74ab5ee69eacc2a7 Mon Sep 17 00:00:00 2001
From: Radu Alexe <radu.alexe@nxp.com>
Date: Thu, 25 May 2017 15:51:50 +0300
Subject: [PATCH] crypto: caam/qi - add support for TLS 1.0 record
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
TLS 1.0 descriptors run on SEC 4.x or higher.
For now, only tls10(hmac(sha1),cbc(aes)) algorithm
is registered by the driver.
Known limitations:
- when src == dst - there should be no element in the src scatterlist array
that contains both associated data and message data.
- when src != dst - associated data is not copied from source into
destination.
- for decryption when src != dst the size of the destination should be
large enough so that the buffer may contain the decrypted authenc and
padded data.
Signed-off-by: Tudor Ambarus <tudor-dan.ambarus@nxp.com>
Signed-off-by: Cristian Stoica <cristian.stoica@nxp.com>
Signed-off-by: Alex Porosanu <alexandru.porosanu@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Radu Alexe <radu.alexe@nxp.com>
---
drivers/crypto/caam/caamalg_desc.c | 414 ++++++++++++++++++++++++++++++++
drivers/crypto/caam/caamalg_desc.h | 13 +
drivers/crypto/caam/caamalg_qi.c | 478 +++++++++++++++++++++++++++++++++++++
drivers/crypto/caam/desc.h | 27 +++
4 files changed, 932 insertions(+)
--- a/drivers/crypto/caam/caamalg_desc.c
+++ b/drivers/crypto/caam/caamalg_desc.c
@@ -622,6 +622,420 @@ copy_iv:
EXPORT_SYMBOL(cnstr_shdsc_aead_givencap);
/**
+ * cnstr_shdsc_tls_encap - tls encapsulation shared descriptor
+ * @desc: pointer to buffer used for descriptor construction
+ * @cdata: pointer to block cipher transform definitions
+ * Valid algorithm values - one of OP_ALG_ALGSEL_AES ANDed
+ * with OP_ALG_AAI_CBC
+ * @adata: pointer to authentication transform definitions.
+ * A split key is required for SEC Era < 6; the size of the split key
+ * is specified in this case. Valid algorithm values OP_ALG_ALGSEL_SHA1
+ * ANDed with OP_ALG_AAI_HMAC_PRECOMP.
+ * @assoclen: associated data length
+ * @ivsize: initialization vector size
+ * @authsize: authentication data size
+ * @blocksize: block cipher size
+ * @era: SEC Era
+ */
+void cnstr_shdsc_tls_encap(u32 * const desc, struct alginfo *cdata,
+ struct alginfo *adata, unsigned int assoclen,
+ unsigned int ivsize, unsigned int authsize,
+ unsigned int blocksize, int era)
+{
+ u32 *key_jump_cmd, *zero_payload_jump_cmd;
+ u32 genpad, idx_ld_datasz, idx_ld_pad, stidx;
+
+ /*
+ * Compute the index (in bytes) for the LOAD with destination of
+ * Class 1 Data Size Register and for the LOAD that generates padding
+ */
+ if (adata->key_inline) {
+ idx_ld_datasz = DESC_TLS10_ENC_LEN + adata->keylen_pad +
+ cdata->keylen - 4 * CAAM_CMD_SZ;
+ idx_ld_pad = DESC_TLS10_ENC_LEN + adata->keylen_pad +
+ cdata->keylen - 2 * CAAM_CMD_SZ;
+ } else {
+ idx_ld_datasz = DESC_TLS10_ENC_LEN + 2 * CAAM_PTR_SZ -
+ 4 * CAAM_CMD_SZ;
+ idx_ld_pad = DESC_TLS10_ENC_LEN + 2 * CAAM_PTR_SZ -
+ 2 * CAAM_CMD_SZ;
+ }
+
+ stidx = 1 << HDR_START_IDX_SHIFT;
+ init_sh_desc(desc, HDR_SHARE_SERIAL | stidx);
+
+ /* skip key loading if they are loaded due to sharing */
+ key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
+ JUMP_COND_SHRD);
+
+ if (era < 6) {
+ if (adata->key_inline)
+ append_key_as_imm(desc, adata->key_virt,
+ adata->keylen_pad, adata->keylen,
+ CLASS_2 | KEY_DEST_MDHA_SPLIT |
+ KEY_ENC);
+ else
+ append_key(desc, adata->key_dma, adata->keylen,
+ CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC);
+ } else {
+ append_proto_dkp(desc, adata);
+ }
+
+ if (cdata->key_inline)
+ append_key_as_imm(desc, cdata->key_virt, cdata->keylen,
+ cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG);
+ else
+ append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 |
+ KEY_DEST_CLASS_REG);
+
+ set_jump_tgt_here(desc, key_jump_cmd);
+
+ /* class 2 operation */
+ append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
+ OP_ALG_ENCRYPT);
+ /* class 1 operation */
+ append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
+ OP_ALG_ENCRYPT);
+
+ /* payloadlen = input data length - (assoclen + ivlen) */
+ append_math_sub_imm_u32(desc, REG0, SEQINLEN, IMM, assoclen + ivsize);
+
+ /* math1 = payloadlen + icvlen */
+ append_math_add_imm_u32(desc, REG1, REG0, IMM, authsize);
+
+ /* padlen = block_size - math1 % block_size */
+ append_math_and_imm_u32(desc, REG3, REG1, IMM, blocksize - 1);
+ append_math_sub_imm_u32(desc, REG2, IMM, REG3, blocksize);
+
+ /* cryptlen = payloadlen + icvlen + padlen */
+ append_math_add(desc, VARSEQOUTLEN, REG1, REG2, 4);
+
+ /*
+ * update immediate data with the padding length value
+ * for the LOAD in the class 1 data size register.
+ */
+ append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH2 |
+ (idx_ld_datasz << MOVE_OFFSET_SHIFT) | 7);
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH2 | MOVE_DEST_DESCBUF |
+ (idx_ld_datasz << MOVE_OFFSET_SHIFT) | 8);
+
+ /* overwrite PL field for the padding iNFO FIFO entry */
+ append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH2 |
+ (idx_ld_pad << MOVE_OFFSET_SHIFT) | 7);
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH2 | MOVE_DEST_DESCBUF |
+ (idx_ld_pad << MOVE_OFFSET_SHIFT) | 8);
+
+ /* store encrypted payload, icv and padding */
+ append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | LDST_VLF);
+
+ /* if payload length is zero, jump to zero-payload commands */
+ append_math_add(desc, VARSEQINLEN, ZERO, REG0, 4);
+ zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL |
+ JUMP_COND_MATH_Z);
+
+ /* load iv in context1 */
+ append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_WORD_CLASS_CTX |
+ LDST_CLASS_1_CCB | ivsize);
+
+ /* read assoc for authentication */
+ append_seq_fifo_load(desc, assoclen, FIFOLD_CLASS_CLASS2 |
+ FIFOLD_TYPE_MSG);
+ /* insnoop payload */
+ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | FIFOLD_TYPE_MSG |
+ FIFOLD_TYPE_LAST2 | FIFOLDST_VLF);
+
+ /* jump the zero-payload commands */
+ append_jump(desc, JUMP_TEST_ALL | 3);
+
+ /* zero-payload commands */
+ set_jump_tgt_here(desc, zero_payload_jump_cmd);
+
+ /* load iv in context1 */
+ append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_WORD_CLASS_CTX |
+ LDST_CLASS_1_CCB | ivsize);
+
+ /* assoc data is the only data for authentication */
+ append_seq_fifo_load(desc, assoclen, FIFOLD_CLASS_CLASS2 |
+ FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST2);
+
+ /* send icv to encryption */
+ append_move(desc, MOVE_SRC_CLASS2CTX | MOVE_DEST_CLASS1INFIFO |
+ authsize);
+
+ /* update class 1 data size register with padding length */
+ append_load_imm_u32(desc, 0, LDST_CLASS_1_CCB |
+ LDST_SRCDST_WORD_DATASZ_REG | LDST_IMM);
+
+ /* generate padding and send it to encryption */
+ genpad = NFIFOENTRY_DEST_CLASS1 | NFIFOENTRY_LC1 | NFIFOENTRY_FC1 |
+ NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_PTYPE_N;
+ append_load_imm_u32(desc, genpad, LDST_CLASS_IND_CCB |
+ LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM);
+
+#ifdef DEBUG
+ print_hex_dump(KERN_ERR, "tls enc shdesc@" __stringify(__LINE__) ": ",
+ DUMP_PREFIX_ADDRESS, 16, 4, desc,
+ desc_bytes(desc), 1);
+#endif
+}
+EXPORT_SYMBOL(cnstr_shdsc_tls_encap);
+
+/**
+ * cnstr_shdsc_tls_decap - tls decapsulation shared descriptor
+ * @desc: pointer to buffer used for descriptor construction
+ * @cdata: pointer to block cipher transform definitions
+ * Valid algorithm values - one of OP_ALG_ALGSEL_AES ANDed
+ * with OP_ALG_AAI_CBC
+ * @adata: pointer to authentication transform definitions.
+ * A split key is required for SEC Era < 6; the size of the split key
+ * is specified in this case. Valid algorithm values OP_ALG_ALGSEL_SHA1
+ * ANDed with OP_ALG_AAI_HMAC_PRECOMP.
+ * @assoclen: associated data length
+ * @ivsize: initialization vector size
+ * @authsize: authentication data size
+ * @blocksize: block cipher size
+ * @era: SEC Era
+ */
+void cnstr_shdsc_tls_decap(u32 * const desc, struct alginfo *cdata,
+ struct alginfo *adata, unsigned int assoclen,
+ unsigned int ivsize, unsigned int authsize,
+ unsigned int blocksize, int era)
+{
+ u32 stidx, jumpback;
+ u32 *key_jump_cmd, *zero_payload_jump_cmd, *skip_zero_jump_cmd;
+ /*
+ * Pointer Size bool determines the size of address pointers.
+ * false - Pointers fit in one 32-bit word.
+ * true - Pointers fit in two 32-bit words.
+ */
+ bool ps = (CAAM_PTR_SZ != CAAM_CMD_SZ);
+
+ stidx = 1 << HDR_START_IDX_SHIFT;
+ init_sh_desc(desc, HDR_SHARE_SERIAL | stidx);
+
+ /* skip key loading if they are loaded due to sharing */
+ key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL |
+ JUMP_COND_SHRD);
+
+ if (era < 6)
+ append_key(desc, adata->key_dma, adata->keylen, CLASS_2 |
+ KEY_DEST_MDHA_SPLIT | KEY_ENC);
+ else
+ append_proto_dkp(desc, adata);
+
+ append_key(desc, cdata->key_dma, cdata->keylen, CLASS_1 |
+ KEY_DEST_CLASS_REG);
+
+ set_jump_tgt_here(desc, key_jump_cmd);
+
+ /* class 2 operation */
+ append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL |
+ OP_ALG_DECRYPT | OP_ALG_ICV_ON);
+ /* class 1 operation */
+ append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL |
+ OP_ALG_DECRYPT);
+
+ /* VSIL = input data length - 2 * block_size */
+ append_math_sub_imm_u32(desc, VARSEQINLEN, SEQINLEN, IMM, 2 *
+ blocksize);
+
+ /*
+ * payloadlen + icvlen + padlen = input data length - (assoclen +
+ * ivsize)
+ */
+ append_math_sub_imm_u32(desc, REG3, SEQINLEN, IMM, assoclen + ivsize);
+
+ /* skip data to the last but one cipher block */
+ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_SKIP | LDST_VLF);
+
+ /* load iv for the last cipher block */
+ append_cmd(desc, CMD_SEQ_LOAD | LDST_SRCDST_WORD_CLASS_CTX |
+ LDST_CLASS_1_CCB | ivsize);
+
+ /* read last cipher block */
+ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG |
+ FIFOLD_TYPE_LAST1 | blocksize);
+
+ /* move decrypted block into math0 and math1 */
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO | MOVE_DEST_MATH0 |
+ blocksize);
+
+ /* reset AES CHA */
+ append_load_imm_u32(desc, CCTRL_RESET_CHA_AESA, LDST_CLASS_IND_CCB |
+ LDST_SRCDST_WORD_CHACTRL | LDST_IMM);
+
+ /* rewind input sequence */
+ append_seq_in_ptr_intlen(desc, 0, 65535, SQIN_RTO);
+
+ /* key1 is in decryption form */
+ append_operation(desc, cdata->algtype | OP_ALG_AAI_DK |
+ OP_ALG_AS_INITFINAL | OP_ALG_DECRYPT);
+
+ /* load iv in context1 */
+ append_cmd(desc, CMD_SEQ_LOAD | LDST_CLASS_1_CCB |
+ LDST_SRCDST_WORD_CLASS_CTX | ivsize);
+
+ /* read sequence number */
+ append_seq_fifo_load(desc, 8, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG);
+ /* load Type, Version and Len fields in math0 */
+ append_cmd(desc, CMD_SEQ_LOAD | LDST_CLASS_DECO |
+ LDST_SRCDST_WORD_DECO_MATH0 | (3 << LDST_OFFSET_SHIFT) | 5);
+
+ /* compute (padlen - 1) */
+ append_math_and_imm_u64(desc, REG1, REG1, IMM, 255);
+
+ /* math2 = icvlen + (padlen - 1) + 1 */
+ append_math_add_imm_u32(desc, REG2, REG1, IMM, authsize + 1);
+
+ append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 1);
+
+ /* VSOL = payloadlen + icvlen + padlen */
+ append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, 4);
+
+ if (caam_little_end)
+ append_moveb(desc, MOVE_WAITCOMP |
+ MOVE_SRC_MATH0 | MOVE_DEST_MATH0 | 8);
+
+ /* update Len field */
+ append_math_sub(desc, REG0, REG0, REG2, 8);
+
+ /* store decrypted payload, icv and padding */
+ append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | LDST_VLF);
+
+ /* VSIL = (payloadlen + icvlen + padlen) - (icvlen + padlen)*/
+ append_math_sub(desc, VARSEQINLEN, REG3, REG2, 4);
+
+ zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL |
+ JUMP_COND_MATH_Z);
+
+ /* send Type, Version and Len(pre ICV) fields to authentication */
+ append_move(desc, MOVE_WAITCOMP |
+ MOVE_SRC_MATH0 | MOVE_DEST_CLASS2INFIFO |
+ (3 << MOVE_OFFSET_SHIFT) | 5);
+
+ /* outsnooping payload */
+ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH |
+ FIFOLD_TYPE_MSG1OUT2 | FIFOLD_TYPE_LAST2 |
+ FIFOLDST_VLF);
+ skip_zero_jump_cmd = append_jump(desc, JUMP_TEST_ALL | 2);
+
+ set_jump_tgt_here(desc, zero_payload_jump_cmd);
+ /* send Type, Version and Len(pre ICV) fields to authentication */
+ append_move(desc, MOVE_WAITCOMP | MOVE_AUX_LS |
+ MOVE_SRC_MATH0 | MOVE_DEST_CLASS2INFIFO |
+ (3 << MOVE_OFFSET_SHIFT) | 5);
+
+ set_jump_tgt_here(desc, skip_zero_jump_cmd);
+ append_math_add(desc, VARSEQINLEN, ZERO, REG2, 4);
+
+ /* load icvlen and padlen */
+ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG |
+ FIFOLD_TYPE_LAST1 | FIFOLDST_VLF);
+
+ /* VSIL = (payloadlen + icvlen + padlen) - icvlen + padlen */
+ append_math_sub(desc, VARSEQINLEN, REG3, REG2, 4);
+
+ /*
+ * Start a new input sequence using the SEQ OUT PTR command options,
+ * pointer and length used when the current output sequence was defined.
+ */
+ if (ps) {
+ /*
+ * Move the lower 32 bits of Shared Descriptor address, the
+ * SEQ OUT PTR command, Output Pointer (2 words) and
+ * Output Length into math registers.
+ */
+ if (caam_little_end)
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_DESCBUF |
+ MOVE_DEST_MATH0 |
+ (55 * 4 << MOVE_OFFSET_SHIFT) | 20);
+ else
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_DESCBUF |
+ MOVE_DEST_MATH0 |
+ (54 * 4 << MOVE_OFFSET_SHIFT) | 20);
+
+ /* Transform SEQ OUT PTR command in SEQ IN PTR command */
+ append_math_and_imm_u32(desc, REG0, REG0, IMM,
+ ~(CMD_SEQ_IN_PTR ^ CMD_SEQ_OUT_PTR));
+ /* Append a JUMP command after the copied fields */
+ jumpback = CMD_JUMP | (char)-9;
+ append_load_imm_u32(desc, jumpback, LDST_CLASS_DECO | LDST_IMM |
+ LDST_SRCDST_WORD_DECO_MATH2 |
+ (4 << LDST_OFFSET_SHIFT));
+ append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 1);
+ /* Move the updated fields back to the Job Descriptor */
+ if (caam_little_end)
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH0 |
+ MOVE_DEST_DESCBUF |
+ (55 * 4 << MOVE_OFFSET_SHIFT) | 24);
+ else
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH0 |
+ MOVE_DEST_DESCBUF |
+ (54 * 4 << MOVE_OFFSET_SHIFT) | 24);
+
+ /*
+ * Read the new SEQ IN PTR command, Input Pointer, Input Length
+ * and then jump back to the next command from the
+ * Shared Descriptor.
+ */
+ append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 6);
+ } else {
+ /*
+ * Move the SEQ OUT PTR command, Output Pointer (1 word) and
+ * Output Length into math registers.
+ */
+ if (caam_little_end)
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_DESCBUF |
+ MOVE_DEST_MATH0 |
+ (54 * 4 << MOVE_OFFSET_SHIFT) | 12);
+ else
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_DESCBUF |
+ MOVE_DEST_MATH0 |
+ (53 * 4 << MOVE_OFFSET_SHIFT) | 12);
+
+ /* Transform SEQ OUT PTR command in SEQ IN PTR command */
+ append_math_and_imm_u64(desc, REG0, REG0, IMM,
+ ~(((u64)(CMD_SEQ_IN_PTR ^
+ CMD_SEQ_OUT_PTR)) << 32));
+ /* Append a JUMP command after the copied fields */
+ jumpback = CMD_JUMP | (char)-7;
+ append_load_imm_u32(desc, jumpback, LDST_CLASS_DECO | LDST_IMM |
+ LDST_SRCDST_WORD_DECO_MATH1 |
+ (4 << LDST_OFFSET_SHIFT));
+ append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 1);
+ /* Move the updated fields back to the Job Descriptor */
+ if (caam_little_end)
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH0 |
+ MOVE_DEST_DESCBUF |
+ (54 * 4 << MOVE_OFFSET_SHIFT) | 16);
+ else
+ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH0 |
+ MOVE_DEST_DESCBUF |
+ (53 * 4 << MOVE_OFFSET_SHIFT) | 16);
+
+ /*
+ * Read the new SEQ IN PTR command, Input Pointer, Input Length
+ * and then jump back to the next command from the
+ * Shared Descriptor.
+ */
+ append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 5);
+ }
+
+ /* skip payload */
+ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_SKIP | FIFOLDST_VLF);
+ /* check icv */
+ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_ICV |
+ FIFOLD_TYPE_LAST2 | authsize);
+
+#ifdef DEBUG
+ print_hex_dump(KERN_ERR, "tls dec shdesc@" __stringify(__LINE__) ": ",
+ DUMP_PREFIX_ADDRESS, 16, 4, desc,
+ desc_bytes(desc), 1);
+#endif
+}
+EXPORT_SYMBOL(cnstr_shdsc_tls_decap);
+
+/**
* cnstr_shdsc_gcm_encap - gcm encapsulation shared descriptor
* @desc: pointer to buffer used for descriptor construction
* @cdata: pointer to block cipher transform definitions
--- a/drivers/crypto/caam/caamalg_desc.h
+++ b/drivers/crypto/caam/caamalg_desc.h
@@ -17,6 +17,9 @@
#define DESC_QI_AEAD_DEC_LEN (DESC_AEAD_DEC_LEN + 3 * CAAM_CMD_SZ)
#define DESC_QI_AEAD_GIVENC_LEN (DESC_AEAD_GIVENC_LEN + 3 * CAAM_CMD_SZ)
+#define DESC_TLS_BASE (4 * CAAM_CMD_SZ)
+#define DESC_TLS10_ENC_LEN (DESC_TLS_BASE + 29 * CAAM_CMD_SZ)
+
/* Note: Nonce is counted in cdata.keylen */
#define DESC_AEAD_CTR_RFC3686_LEN (4 * CAAM_CMD_SZ)
@@ -72,6 +75,16 @@ void cnstr_shdsc_aead_givencap(u32 * con
u32 *nonce, const u32 ctx1_iv_off,
const bool is_qi, int era);
+void cnstr_shdsc_tls_encap(u32 *const desc, struct alginfo *cdata,
+ struct alginfo *adata, unsigned int assoclen,
+ unsigned int ivsize, unsigned int authsize,
+ unsigned int blocksize, int era);
+
+void cnstr_shdsc_tls_decap(u32 *const desc, struct alginfo *cdata,
+ struct alginfo *adata, unsigned int assoclen,
+ unsigned int ivsize, unsigned int authsize,
+ unsigned int blocksize, int era);
+
void cnstr_shdsc_gcm_encap(u32 * const desc, struct alginfo *cdata,
unsigned int ivsize, unsigned int icvsize,
const bool is_qi);
--- a/drivers/crypto/caam/caamalg_qi.c
+++ b/drivers/crypto/caam/caamalg_qi.c
@@ -290,6 +290,167 @@ static int des3_aead_setkey(struct crypt
return err;
}
+static int tls_set_sh_desc(struct crypto_aead *tls)
+{
+ struct caam_ctx *ctx = crypto_aead_ctx(tls);
+ unsigned int ivsize = crypto_aead_ivsize(tls);
+ unsigned int blocksize = crypto_aead_blocksize(tls);
+ unsigned int assoclen = 13; /* always 13 bytes for TLS */
+ unsigned int data_len[2];
+ u32 inl_mask;
+ struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctx->jrdev->parent);
+
+ if (!ctx->cdata.keylen || !ctx->authsize)
+ return 0;
+
+ /*
+ * TLS 1.0 encrypt shared descriptor
+ * Job Descriptor and Shared Descriptor
+ * must fit into the 64-word Descriptor h/w Buffer
+ */
+ data_len[0] = ctx->adata.keylen_pad;
+ data_len[1] = ctx->cdata.keylen;
+
+ if (desc_inline_query(DESC_TLS10_ENC_LEN, DESC_JOB_IO_LEN, data_len,
+ &inl_mask, ARRAY_SIZE(data_len)) < 0)
+ return -EINVAL;
+
+ if (inl_mask & 1)
+ ctx->adata.key_virt = ctx->key;
+ else
+ ctx->adata.key_dma = ctx->key_dma;
+
+ if (inl_mask & 2)
+ ctx->cdata.key_virt = ctx->key + ctx->adata.keylen_pad;
+ else
+ ctx->cdata.key_dma = ctx->key_dma + ctx->adata.keylen_pad;
+
+ ctx->adata.key_inline = !!(inl_mask & 1);
+ ctx->cdata.key_inline = !!(inl_mask & 2);
+
+ cnstr_shdsc_tls_encap(ctx->sh_desc_enc, &ctx->cdata, &ctx->adata,
+ assoclen, ivsize, ctx->authsize, blocksize,
+ ctrlpriv->era);
+
+ /*
+ * TLS 1.0 decrypt shared descriptor
+ * Keys do not fit inline, regardless of algorithms used
+ */
+ ctx->adata.key_inline = false;
+ ctx->adata.key_dma = ctx->key_dma;
+ ctx->cdata.key_dma = ctx->key_dma + ctx->adata.keylen_pad;
+
+ cnstr_shdsc_tls_decap(ctx->sh_desc_dec, &ctx->cdata, &ctx->adata,
+ assoclen, ivsize, ctx->authsize, blocksize,
+ ctrlpriv->era);
+
+ return 0;
+}
+
+static int tls_setauthsize(struct crypto_aead *tls, unsigned int authsize)
+{
+ struct caam_ctx *ctx = crypto_aead_ctx(tls);
+
+ ctx->authsize = authsize;
+ tls_set_sh_desc(tls);
+
+ return 0;
+}
+
+static int tls_setkey(struct crypto_aead *tls, const u8 *key,
+ unsigned int keylen)
+{
+ struct caam_ctx *ctx = crypto_aead_ctx(tls);
+ struct device *jrdev = ctx->jrdev;
+ struct caam_drv_private *ctrlpriv = dev_get_drvdata(jrdev->parent);
+ struct crypto_authenc_keys keys;
+ int ret = 0;
+
+ if (crypto_authenc_extractkeys(&keys, key, keylen) != 0)
+ goto badkey;
+
+#ifdef DEBUG
+ dev_err(jrdev, "keylen %d enckeylen %d authkeylen %d\n",
+ keys.authkeylen + keys.enckeylen, keys.enckeylen,
+ keys.authkeylen);
+ print_hex_dump(KERN_ERR, "key in @" __stringify(__LINE__)": ",
+ DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);
+#endif
+
+ /*
+ * If DKP is supported, use it in the shared descriptor to generate
+ * the split key.
+ */
+ if (ctrlpriv->era >= 6) {
+ ctx->adata.keylen = keys.authkeylen;
+ ctx->adata.keylen_pad = split_key_len(ctx->adata.algtype &
+ OP_ALG_ALGSEL_MASK);
+
+ if (ctx->adata.keylen_pad + keys.enckeylen > CAAM_MAX_KEY_SIZE)
+ goto badkey;
+
+ memcpy(ctx->key, keys.authkey, keys.authkeylen);
+ memcpy(ctx->key + ctx->adata.keylen_pad, keys.enckey,
+ keys.enckeylen);
+ dma_sync_single_for_device(jrdev, ctx->key_dma,
+ ctx->adata.keylen_pad +
+ keys.enckeylen, ctx->dir);
+ goto skip_split_key;
+ }
+
+ ret = gen_split_key(jrdev, ctx->key, &ctx->adata, keys.authkey,
+ keys.authkeylen, CAAM_MAX_KEY_SIZE -
+ keys.enckeylen);
+ if (ret)
+ goto badkey;
+
+ /* postpend encryption key to auth split key */
+ memcpy(ctx->key + ctx->adata.keylen_pad, keys.enckey, keys.enckeylen);
+ dma_sync_single_for_device(jrdev, ctx->key_dma, ctx->adata.keylen_pad +
+ keys.enckeylen, ctx->dir);
+
+#ifdef DEBUG
+ dev_err(jrdev, "split keylen %d split keylen padded %d\n",
+ ctx->adata.keylen, ctx->adata.keylen_pad);
+ print_hex_dump(KERN_ERR, "ctx.key@" __stringify(__LINE__)": ",
+ DUMP_PREFIX_ADDRESS, 16, 4, ctx->key,
+ ctx->adata.keylen_pad + keys.enckeylen, 1);
+#endif
+
+skip_split_key:
+ ctx->cdata.keylen = keys.enckeylen;
+
+ ret = tls_set_sh_desc(tls);
+ if (ret)
+ goto badkey;
+
+ /* Now update the driver contexts with the new shared descriptor */
+ if (ctx->drv_ctx[ENCRYPT]) {
+ ret = caam_drv_ctx_update(ctx->drv_ctx[ENCRYPT],
+ ctx->sh_desc_enc);
+ if (ret) {
+ dev_err(jrdev, "driver enc context update failed\n");
+ goto badkey;
+ }
+ }
+
+ if (ctx->drv_ctx[DECRYPT]) {
+ ret = caam_drv_ctx_update(ctx->drv_ctx[DECRYPT],
+ ctx->sh_desc_dec);
+ if (ret) {
+ dev_err(jrdev, "driver dec context update failed\n");
+ goto badkey;
+ }
+ }
+
+ memzero_explicit(&keys, sizeof(keys));
+ return ret;
+badkey:
+ crypto_aead_set_flags(tls, CRYPTO_TFM_RES_BAD_KEY_LEN);
+ memzero_explicit(&keys, sizeof(keys));
+ return -EINVAL;
+}
+
static int gcm_set_sh_desc(struct crypto_aead *aead)
{
struct caam_ctx *ctx = crypto_aead_ctx(aead);
@@ -809,6 +970,29 @@ struct aead_edesc {
};
/*
+ * tls_edesc - s/w-extended tls descriptor
+ * @src_nents: number of segments in input scatterlist
+ * @dst_nents: number of segments in output scatterlist
+ * @iv_dma: dma address of iv for checking continuity and link table
+ * @qm_sg_bytes: length of dma mapped h/w link table
+ * @tmp: array of scatterlists used by 'scatterwalk_ffwd'
+ * @qm_sg_dma: bus physical mapped address of h/w link table
+ * @drv_req: driver-specific request structure
+ * @sgt: the h/w link table, followed by IV
+ */
+struct tls_edesc {
+ int src_nents;
+ int dst_nents;
+ dma_addr_t iv_dma;
+ int qm_sg_bytes;
+ dma_addr_t qm_sg_dma;
+ struct scatterlist tmp[2];
+ struct scatterlist *dst;
+ struct caam_drv_req drv_req;
+ struct qm_sg_entry sgt[0];
+};
+
+/*
* skcipher_edesc - s/w-extended skcipher descriptor
* @src_nents: number of segments in input scatterlist
* @dst_nents: number of segments in output scatterlist
@@ -900,6 +1084,18 @@ static void aead_unmap(struct device *de
dma_unmap_single(dev, edesc->assoclen_dma, 4, DMA_TO_DEVICE);
}
+static void tls_unmap(struct device *dev,
+ struct tls_edesc *edesc,
+ struct aead_request *req)
+{
+ struct crypto_aead *aead = crypto_aead_reqtfm(req);
+ int ivsize = crypto_aead_ivsize(aead);
+
+ caam_unmap(dev, req->src, edesc->dst, edesc->src_nents,
+ edesc->dst_nents, edesc->iv_dma, ivsize, DMA_TO_DEVICE,
+ edesc->qm_sg_dma, edesc->qm_sg_bytes);
+}
+
static void skcipher_unmap(struct device *dev, struct skcipher_edesc *edesc,
struct skcipher_request *req)
{
@@ -1192,6 +1388,243 @@ static int aead_decrypt(struct aead_requ
return aead_crypt(req, false);
}
+static void tls_done(struct caam_drv_req *drv_req, u32 status)
+{
+ struct device *qidev;
+ struct tls_edesc *edesc;
+ struct aead_request *aead_req = drv_req->app_ctx;
+ struct crypto_aead *aead = crypto_aead_reqtfm(aead_req);
+ struct caam_ctx *caam_ctx = crypto_aead_ctx(aead);
+ int ecode = 0;
+
+ qidev = caam_ctx->qidev;
+
+ if (unlikely(status)) {
+ caam_jr_strstatus(qidev, status);
+ ecode = -EIO;
+ }
+
+ edesc = container_of(drv_req, typeof(*edesc), drv_req);
+ tls_unmap(qidev, edesc, aead_req);
+
+ aead_request_complete(aead_req, ecode);
+ qi_cache_free(edesc);
+}
+
+/*
+ * allocate and map the tls extended descriptor
+ */
+static struct tls_edesc *tls_edesc_alloc(struct aead_request *req, bool encrypt)
+{
+ struct crypto_aead *aead = crypto_aead_reqtfm(req);
+ struct caam_ctx *ctx = crypto_aead_ctx(aead);
+ unsigned int blocksize = crypto_aead_blocksize(aead);
+ unsigned int padsize, authsize;
+ struct caam_aead_alg *alg = container_of(crypto_aead_alg(aead),
+ typeof(*alg), aead);
+ struct device *qidev = ctx->qidev;
+ gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
+ GFP_KERNEL : GFP_ATOMIC;
+ int src_nents, mapped_src_nents, dst_nents = 0, mapped_dst_nents = 0;
+ struct tls_edesc *edesc;
+ dma_addr_t qm_sg_dma, iv_dma = 0;
+ int ivsize = 0;
+ u8 *iv;
+ int qm_sg_index, qm_sg_ents = 0, qm_sg_bytes;
+ int in_len, out_len;
+ struct qm_sg_entry *sg_table, *fd_sgt;
+ struct caam_drv_ctx *drv_ctx;
+ struct scatterlist *dst;
+
+ if (encrypt) {
+ padsize = blocksize - ((req->cryptlen + ctx->authsize) %
+ blocksize);
+ authsize = ctx->authsize + padsize;
+ } else {
+ authsize = ctx->authsize;
+ }
+
+ drv_ctx = get_drv_ctx(ctx, encrypt ? ENCRYPT : DECRYPT);
+ if (unlikely(IS_ERR_OR_NULL(drv_ctx)))
+ return (struct tls_edesc *)drv_ctx;
+
+ /* allocate space for base edesc, link tables and IV */
+ edesc = qi_cache_alloc(GFP_DMA | flags);
+ if (unlikely(!edesc)) {
+ dev_err(qidev, "could not allocate extended descriptor\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ if (likely(req->src == req->dst)) {
+ src_nents = sg_nents_for_len(req->src, req->assoclen +
+ req->cryptlen +
+ (encrypt ? authsize : 0));
+ if (unlikely(src_nents < 0)) {
+ dev_err(qidev, "Insufficient bytes (%d) in src S/G\n",
+ req->assoclen + req->cryptlen +
+ (encrypt ? authsize : 0));
+ qi_cache_free(edesc);
+ return ERR_PTR(src_nents);
+ }
+
+ mapped_src_nents = dma_map_sg(qidev, req->src, src_nents,
+ DMA_BIDIRECTIONAL);
+ if (unlikely(!mapped_src_nents)) {
+ dev_err(qidev, "unable to map source\n");
+ qi_cache_free(edesc);
+ return ERR_PTR(-ENOMEM);
+ }
+ dst = req->dst;
+ } else {
+ src_nents = sg_nents_for_len(req->src, req->assoclen +
+ req->cryptlen);
+ if (unlikely(src_nents < 0)) {
+ dev_err(qidev, "Insufficient bytes (%d) in src S/G\n",
+ req->assoclen + req->cryptlen);
+ qi_cache_free(edesc);
+ return ERR_PTR(src_nents);
+ }
+
+ dst = scatterwalk_ffwd(edesc->tmp, req->dst, req->assoclen);
+ dst_nents = sg_nents_for_len(dst, req->cryptlen +
+ (encrypt ? authsize : 0));
+ if (unlikely(dst_nents < 0)) {
+ dev_err(qidev, "Insufficient bytes (%d) in dst S/G\n",
+ req->cryptlen +
+ (encrypt ? authsize : 0));
+ qi_cache_free(edesc);
+ return ERR_PTR(dst_nents);
+ }
+
+ if (src_nents) {
+ mapped_src_nents = dma_map_sg(qidev, req->src,
+ src_nents, DMA_TO_DEVICE);
+ if (unlikely(!mapped_src_nents)) {
+ dev_err(qidev, "unable to map source\n");
+ qi_cache_free(edesc);
+ return ERR_PTR(-ENOMEM);
+ }
+ } else {
+ mapped_src_nents = 0;
+ }
+
+ mapped_dst_nents = dma_map_sg(qidev, dst, dst_nents,
+ DMA_FROM_DEVICE);
+ if (unlikely(!mapped_dst_nents)) {
+ dev_err(qidev, "unable to map destination\n");
+ dma_unmap_sg(qidev, req->src, src_nents, DMA_TO_DEVICE);
+ qi_cache_free(edesc);
+ return ERR_PTR(-ENOMEM);
+ }
+ }
+
+ /*
+ * Create S/G table: IV, src, dst.
+ * Input is not contiguous.
+ */
+ qm_sg_ents = 1 + mapped_src_nents +
+ (mapped_dst_nents > 1 ? mapped_dst_nents : 0);
+ sg_table = &edesc->sgt[0];
+ qm_sg_bytes = qm_sg_ents * sizeof(*sg_table);
+
+ ivsize = crypto_aead_ivsize(aead);
+ iv = (u8 *)(sg_table + qm_sg_ents);
+ /* Make sure IV is located in a DMAable area */
+ memcpy(iv, req->iv, ivsize);
+ iv_dma = dma_map_single(qidev, iv, ivsize, DMA_TO_DEVICE);
+ if (dma_mapping_error(qidev, iv_dma)) {
+ dev_err(qidev, "unable to map IV\n");
+ caam_unmap(qidev, req->src, dst, src_nents, dst_nents, 0, 0,
+ DMA_NONE, 0, 0);
+ qi_cache_free(edesc);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ edesc->src_nents = src_nents;
+ edesc->dst_nents = dst_nents;
+ edesc->dst = dst;
+ edesc->iv_dma = iv_dma;
+ edesc->drv_req.app_ctx = req;
+ edesc->drv_req.cbk = tls_done;
+ edesc->drv_req.drv_ctx = drv_ctx;
+
+ dma_to_qm_sg_one(sg_table, iv_dma, ivsize, 0);
+ qm_sg_index = 1;
+
+ sg_to_qm_sg_last(req->src, mapped_src_nents, sg_table + qm_sg_index, 0);
+ qm_sg_index += mapped_src_nents;
+
+ if (mapped_dst_nents > 1)
+ sg_to_qm_sg_last(dst, mapped_dst_nents, sg_table +
+ qm_sg_index, 0);
+
+ qm_sg_dma = dma_map_single(qidev, sg_table, qm_sg_bytes, DMA_TO_DEVICE);
+ if (dma_mapping_error(qidev, qm_sg_dma)) {
+ dev_err(qidev, "unable to map S/G table\n");
+ caam_unmap(qidev, req->src, dst, src_nents, dst_nents, iv_dma,
+ ivsize, DMA_TO_DEVICE, 0, 0);
+ qi_cache_free(edesc);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ edesc->qm_sg_dma = qm_sg_dma;
+ edesc->qm_sg_bytes = qm_sg_bytes;
+
+ out_len = req->cryptlen + (encrypt ? authsize : 0);
+ in_len = ivsize + req->assoclen + req->cryptlen;
+
+ fd_sgt = &edesc->drv_req.fd_sgt[0];
+
+ dma_to_qm_sg_one_last_ext(&fd_sgt[1], qm_sg_dma, in_len, 0);
+
+ if (req->dst == req->src)
+ dma_to_qm_sg_one_ext(&fd_sgt[0], qm_sg_dma +
+ (sg_nents_for_len(req->src, req->assoclen) +
+ 1) * sizeof(*sg_table), out_len, 0);
+ else if (mapped_dst_nents == 1)
+ dma_to_qm_sg_one(&fd_sgt[0], sg_dma_address(dst), out_len, 0);
+ else
+ dma_to_qm_sg_one_ext(&fd_sgt[0], qm_sg_dma + sizeof(*sg_table) *
+ qm_sg_index, out_len, 0);
+
+ return edesc;
+}
+
+static int tls_crypt(struct aead_request *req, bool encrypt)
+{
+ struct tls_edesc *edesc;
+ struct crypto_aead *aead = crypto_aead_reqtfm(req);
+ struct caam_ctx *ctx = crypto_aead_ctx(aead);
+ int ret;
+
+ if (unlikely(caam_congested))
+ return -EAGAIN;
+
+ edesc = tls_edesc_alloc(req, encrypt);
+ if (IS_ERR_OR_NULL(edesc))
+ return PTR_ERR(edesc);
+
+ ret = caam_qi_enqueue(ctx->qidev, &edesc->drv_req);
+ if (!ret) {
+ ret = -EINPROGRESS;
+ } else {
+ tls_unmap(ctx->qidev, edesc, req);
+ qi_cache_free(edesc);
+ }
+
+ return ret;
+}
+
+static int tls_encrypt(struct aead_request *req)
+{
+ return tls_crypt(req, true);
+}
+
+static int tls_decrypt(struct aead_request *req)
+{
+ return tls_crypt(req, false);
+}
+
static int ipsec_gcm_encrypt(struct aead_request *req)
{
return crypto_ipsec_check_assoclen(req->assoclen) ? : aead_crypt(req,
@@ -2411,6 +2844,26 @@ static struct caam_aead_alg driver_aeads
.geniv = true,
}
},
+ {
+ .aead = {
+ .base = {
+ .cra_name = "tls10(hmac(sha1),cbc(aes))",
+ .cra_driver_name = "tls10-hmac-sha1-cbc-aes-caam-qi",
+ .cra_blocksize = AES_BLOCK_SIZE,
+ },
+ .setkey = tls_setkey,
+ .setauthsize = tls_setauthsize,
+ .encrypt = tls_encrypt,
+ .decrypt = tls_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ },
+ .caam = {
+ .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
+ .class2_alg_type = OP_ALG_ALGSEL_SHA1 |
+ OP_ALG_AAI_HMAC_PRECOMP,
+ }
+ }
};
static int caam_init_common(struct caam_ctx *ctx, struct caam_alg_entry *caam,
@@ -2418,6 +2871,16 @@ static int caam_init_common(struct caam_
{
struct caam_drv_private *priv;
struct device *dev;
+ /* Digest sizes for MD5, SHA1, SHA-224, SHA-256, SHA-384, SHA-512 */
+ static const u8 digest_size[] = {
+ MD5_DIGEST_SIZE,
+ SHA1_DIGEST_SIZE,
+ SHA224_DIGEST_SIZE,
+ SHA256_DIGEST_SIZE,
+ SHA384_DIGEST_SIZE,
+ SHA512_DIGEST_SIZE
+ };
+ u8 op_id;
/*
* distribute tfms across job rings to ensure in-order
@@ -2449,6 +2912,21 @@ static int caam_init_common(struct caam_
ctx->adata.algtype = OP_TYPE_CLASS2_ALG | caam->class2_alg_type;
ctx->qidev = dev;
+ if (ctx->adata.algtype) {
+ op_id = (ctx->adata.algtype & OP_ALG_ALGSEL_SUBMASK)
+ >> OP_ALG_ALGSEL_SHIFT;
+ if (op_id < ARRAY_SIZE(digest_size)) {
+ ctx->authsize = digest_size[op_id];
+ } else {
+ dev_err(ctx->jrdev,
+ "incorrect op_id %d; must be less than %zu\n",
+ op_id, ARRAY_SIZE(digest_size));
+ caam_jr_free(ctx->jrdev);
+ return -EINVAL;
+ }
+ } else {
+ ctx->authsize = 0;
+ }
spin_lock_init(&ctx->lock);
ctx->drv_ctx[ENCRYPT] = NULL;
--- a/drivers/crypto/caam/desc.h
+++ b/drivers/crypto/caam/desc.h
@@ -1704,4 +1704,31 @@
/* Frame Descriptor Command for Replacement Job Descriptor */
#define FD_CMD_REPLACE_JOB_DESC 0x20000000
+/* CHA Control Register bits */
+#define CCTRL_RESET_CHA_ALL 0x1
+#define CCTRL_RESET_CHA_AESA 0x2
+#define CCTRL_RESET_CHA_DESA 0x4
+#define CCTRL_RESET_CHA_AFHA 0x8
+#define CCTRL_RESET_CHA_KFHA 0x10
+#define CCTRL_RESET_CHA_SF8A 0x20
+#define CCTRL_RESET_CHA_PKHA 0x40
+#define CCTRL_RESET_CHA_MDHA 0x80
+#define CCTRL_RESET_CHA_CRCA 0x100
+#define CCTRL_RESET_CHA_RNG 0x200
+#define CCTRL_RESET_CHA_SF9A 0x400
+#define CCTRL_RESET_CHA_ZUCE 0x800
+#define CCTRL_RESET_CHA_ZUCA 0x1000
+#define CCTRL_UNLOAD_PK_A0 0x10000
+#define CCTRL_UNLOAD_PK_A1 0x20000
+#define CCTRL_UNLOAD_PK_A2 0x40000
+#define CCTRL_UNLOAD_PK_A3 0x80000
+#define CCTRL_UNLOAD_PK_B0 0x100000
+#define CCTRL_UNLOAD_PK_B1 0x200000
+#define CCTRL_UNLOAD_PK_B2 0x400000
+#define CCTRL_UNLOAD_PK_B3 0x800000
+#define CCTRL_UNLOAD_PK_N 0x1000000
+#define CCTRL_UNLOAD_PK_A 0x4000000
+#define CCTRL_UNLOAD_PK_B 0x8000000
+#define CCTRL_UNLOAD_SBOX 0x10000000
+
#endif /* DESC_H */