drivers/crypto/caam/caamalg_qi.c

root/drivers/crypto/caam/caamalg_qi.c
// SPDX-License-Identifier: GPL-2.0+
/*
 * Freescale FSL CAAM support for crypto API over QI backend.
 * Based on caamalg.c
 *
 * Copyright 2013-2016 Freescale Semiconductor, Inc.
 * Copyright 2016-2019 NXP
 */

#include "compat.h"
#include "ctrl.h"
#include "regs.h"
#include "intern.h"
#include "desc_constr.h"
#include "error.h"
#include "sg_sw_qm.h"
#include "key_gen.h"
#include "qi.h"
#include "jr.h"
#include "caamalg_desc.h"
#include <crypto/xts.h>
#include <linux/unaligned.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/string.h>

/*
 * crypto alg
 */
#define CAAM_CRA_PRIORITY               2000
/* max key is sum of AES_MAX_KEY_SIZE, max split key size */
#define CAAM_MAX_KEY_SIZE               (AES_MAX_KEY_SIZE + \
                                         SHA512_DIGEST_SIZE * 2)

#define DESC_MAX_USED_BYTES             (DESC_QI_AEAD_GIVENC_LEN + \
                                         CAAM_MAX_KEY_SIZE)
#define DESC_MAX_USED_LEN               (DESC_MAX_USED_BYTES / CAAM_CMD_SZ)

struct caam_alg_entry {
        int class1_alg_type;
        int class2_alg_type;
        bool rfc3686;
        bool geniv;
        bool nodkp;
};

struct caam_aead_alg {
        struct aead_alg aead;
        struct caam_alg_entry caam;
        bool registered;
};

struct caam_skcipher_alg {
        struct skcipher_alg skcipher;
        struct caam_alg_entry caam;
        bool registered;
};

/*
 * per-session context
 */
struct caam_ctx {
        struct device *jrdev;
        u32 sh_desc_enc[DESC_MAX_USED_LEN];
        u32 sh_desc_dec[DESC_MAX_USED_LEN];
        u8 key[CAAM_MAX_KEY_SIZE];
        dma_addr_t key_dma;
        enum dma_data_direction dir;
        struct alginfo adata;
        struct alginfo cdata;
        unsigned int authsize;
        struct device *qidev;
        spinlock_t lock;        /* Protects multiple init of driver context */
        struct caam_drv_ctx *drv_ctx[NUM_OP];
        bool xts_key_fallback;
        struct crypto_skcipher *fallback;
};

struct caam_skcipher_req_ctx {
        struct skcipher_request fallback_req;
};

static int aead_set_sh_desc(struct crypto_aead *aead)
{
        struct caam_aead_alg *alg = container_of(crypto_aead_alg(aead),
                                                 typeof(*alg), aead);
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        unsigned int ivsize = crypto_aead_ivsize(aead);
        u32 ctx1_iv_off = 0;
        u32 *nonce = NULL;
        unsigned int data_len[2];
        u32 inl_mask;
        const bool ctr_mode = ((ctx->cdata.algtype & OP_ALG_AAI_MASK) ==
                               OP_ALG_AAI_CTR_MOD128);
        const bool is_rfc3686 = alg->caam.rfc3686;
        struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctx->jrdev->parent);

        if (!ctx->cdata.keylen || !ctx->authsize)
                return 0;

        /*
         * AES-CTR needs to load IV in CONTEXT1 reg
         * at an offset of 128bits (16bytes)
         * CONTEXT1[255:128] = IV
         */
        if (ctr_mode)
                ctx1_iv_off = 16;

        /*
         * RFC3686 specific:
         *      CONTEXT1[255:128] = {NONCE, IV, COUNTER}
         */
        if (is_rfc3686) {
                ctx1_iv_off = 16 + CTR_RFC3686_NONCE_SIZE;
                nonce = (u32 *)((void *)ctx->key + ctx->adata.keylen_pad +
                                ctx->cdata.keylen - CTR_RFC3686_NONCE_SIZE);
        }

        /*
         * In case |user key| > |derived key|, using DKP<imm,imm> would result
         * in invalid opcodes (last bytes of user key) in the resulting
         * descriptor. Use DKP<ptr,imm> instead => both virtual and dma key
         * addresses are needed.
         */
        ctx->adata.key_virt = ctx->key;
        ctx->adata.key_dma = ctx->key_dma;

        ctx->cdata.key_virt = ctx->key + ctx->adata.keylen_pad;
        ctx->cdata.key_dma = ctx->key_dma + ctx->adata.keylen_pad;

        data_len[0] = ctx->adata.keylen_pad;
        data_len[1] = ctx->cdata.keylen;

        if (alg->caam.geniv)
                goto skip_enc;

        /* aead_encrypt shared descriptor */
        if (desc_inline_query(DESC_QI_AEAD_ENC_LEN +
                              (is_rfc3686 ? DESC_AEAD_CTR_RFC3686_LEN : 0),
                              DESC_JOB_IO_LEN, data_len, &inl_mask,
                              ARRAY_SIZE(data_len)) < 0)
                return -EINVAL;

        ctx->adata.key_inline = !!(inl_mask & 1);
        ctx->cdata.key_inline = !!(inl_mask & 2);

        cnstr_shdsc_aead_encap(ctx->sh_desc_enc, &ctx->cdata, &ctx->adata,
                               ivsize, ctx->authsize, is_rfc3686, nonce,
                               ctx1_iv_off, true, ctrlpriv->era);

skip_enc:
        /* aead_decrypt shared descriptor */
        if (desc_inline_query(DESC_QI_AEAD_DEC_LEN +
                              (is_rfc3686 ? DESC_AEAD_CTR_RFC3686_LEN : 0),
                              DESC_JOB_IO_LEN, data_len, &inl_mask,
                              ARRAY_SIZE(data_len)) < 0)
                return -EINVAL;

        ctx->adata.key_inline = !!(inl_mask & 1);
        ctx->cdata.key_inline = !!(inl_mask & 2);

        cnstr_shdsc_aead_decap(ctx->sh_desc_dec, &ctx->cdata, &ctx->adata,
                               ivsize, ctx->authsize, alg->caam.geniv,
                               is_rfc3686, nonce, ctx1_iv_off, true,
                               ctrlpriv->era);

        if (!alg->caam.geniv)
                goto skip_givenc;

        /* aead_givencrypt shared descriptor */
        if (desc_inline_query(DESC_QI_AEAD_GIVENC_LEN +
                              (is_rfc3686 ? DESC_AEAD_CTR_RFC3686_LEN : 0),
                              DESC_JOB_IO_LEN, data_len, &inl_mask,
                              ARRAY_SIZE(data_len)) < 0)
                return -EINVAL;

        ctx->adata.key_inline = !!(inl_mask & 1);
        ctx->cdata.key_inline = !!(inl_mask & 2);

        cnstr_shdsc_aead_givencap(ctx->sh_desc_enc, &ctx->cdata, &ctx->adata,
                                  ivsize, ctx->authsize, is_rfc3686, nonce,
                                  ctx1_iv_off, true, ctrlpriv->era);

skip_givenc:
        return 0;
}

static int aead_setauthsize(struct crypto_aead *authenc, unsigned int authsize)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(authenc);

        ctx->authsize = authsize;
        aead_set_sh_desc(authenc);

        return 0;
}

static int aead_setkey(struct crypto_aead *aead, const u8 *key,
                       unsigned int keylen)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        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;

        dev_dbg(jrdev, "keylen %d enckeylen %d authkeylen %d\n",
                keys.authkeylen + keys.enckeylen, keys.enckeylen,
                keys.authkeylen);
        print_hex_dump_devel("key in @" __stringify(__LINE__)": ",
                             DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);

        /*
         * 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->parent, 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->parent, ctx->key_dma,
                                   ctx->adata.keylen_pad + keys.enckeylen,
                                   ctx->dir);

        print_hex_dump_devel("ctx.key@" __stringify(__LINE__)": ",
                             DUMP_PREFIX_ADDRESS, 16, 4, ctx->key,
                             ctx->adata.keylen_pad + keys.enckeylen, 1);

skip_split_key:
        ctx->cdata.keylen = keys.enckeylen;

        ret = aead_set_sh_desc(aead);
        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:
        memzero_explicit(&keys, sizeof(keys));
        return -EINVAL;
}

static int des3_aead_setkey(struct crypto_aead *aead, const u8 *key,
                            unsigned int keylen)
{
        struct crypto_authenc_keys keys;
        int err;

        err = crypto_authenc_extractkeys(&keys, key, keylen);
        if (unlikely(err))
                return err;

        err = verify_aead_des3_key(aead, keys.enckey, keys.enckeylen) ?:
              aead_setkey(aead, key, keylen);

        memzero_explicit(&keys, sizeof(keys));
        return err;
}

static int gcm_set_sh_desc(struct crypto_aead *aead)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        unsigned int ivsize = crypto_aead_ivsize(aead);
        int rem_bytes = CAAM_DESC_BYTES_MAX - DESC_JOB_IO_LEN -
                        ctx->cdata.keylen;

        if (!ctx->cdata.keylen || !ctx->authsize)
                return 0;

        /*
         * Job Descriptor and Shared Descriptor
         * must fit into the 64-word Descriptor h/w Buffer
         */
        if (rem_bytes >= DESC_QI_GCM_ENC_LEN) {
                ctx->cdata.key_inline = true;
                ctx->cdata.key_virt = ctx->key;
        } else {
                ctx->cdata.key_inline = false;
                ctx->cdata.key_dma = ctx->key_dma;
        }

        cnstr_shdsc_gcm_encap(ctx->sh_desc_enc, &ctx->cdata, ivsize,
                              ctx->authsize, true);

        /*
         * Job Descriptor and Shared Descriptor
         * must fit into the 64-word Descriptor h/w Buffer
         */
        if (rem_bytes >= DESC_QI_GCM_DEC_LEN) {
                ctx->cdata.key_inline = true;
                ctx->cdata.key_virt = ctx->key;
        } else {
                ctx->cdata.key_inline = false;
                ctx->cdata.key_dma = ctx->key_dma;
        }

        cnstr_shdsc_gcm_decap(ctx->sh_desc_dec, &ctx->cdata, ivsize,
                              ctx->authsize, true);

        return 0;
}

static int gcm_setauthsize(struct crypto_aead *authenc, unsigned int authsize)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(authenc);
        int err;

        err = crypto_gcm_check_authsize(authsize);
        if (err)
                return err;

        ctx->authsize = authsize;
        gcm_set_sh_desc(authenc);

        return 0;
}

static int gcm_setkey(struct crypto_aead *aead,
                      const u8 *key, unsigned int keylen)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        struct device *jrdev = ctx->jrdev;
        int ret;

        ret = aes_check_keylen(keylen);
        if (ret)
                return ret;

        print_hex_dump_devel("key in @" __stringify(__LINE__)": ",
                             DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);

        memcpy(ctx->key, key, keylen);
        dma_sync_single_for_device(jrdev->parent, ctx->key_dma, keylen,
                                   ctx->dir);
        ctx->cdata.keylen = keylen;

        ret = gcm_set_sh_desc(aead);
        if (ret)
                return ret;

        /* 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");
                        return ret;
                }
        }

        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");
                        return ret;
                }
        }

        return 0;
}

static int rfc4106_set_sh_desc(struct crypto_aead *aead)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        unsigned int ivsize = crypto_aead_ivsize(aead);
        int rem_bytes = CAAM_DESC_BYTES_MAX - DESC_JOB_IO_LEN -
                        ctx->cdata.keylen;

        if (!ctx->cdata.keylen || !ctx->authsize)
                return 0;

        ctx->cdata.key_virt = ctx->key;

        /*
         * Job Descriptor and Shared Descriptor
         * must fit into the 64-word Descriptor h/w Buffer
         */
        if (rem_bytes >= DESC_QI_RFC4106_ENC_LEN) {
                ctx->cdata.key_inline = true;
        } else {
                ctx->cdata.key_inline = false;
                ctx->cdata.key_dma = ctx->key_dma;
        }

        cnstr_shdsc_rfc4106_encap(ctx->sh_desc_enc, &ctx->cdata, ivsize,
                                  ctx->authsize, true);

        /*
         * Job Descriptor and Shared Descriptor
         * must fit into the 64-word Descriptor h/w Buffer
         */
        if (rem_bytes >= DESC_QI_RFC4106_DEC_LEN) {
                ctx->cdata.key_inline = true;
        } else {
                ctx->cdata.key_inline = false;
                ctx->cdata.key_dma = ctx->key_dma;
        }

        cnstr_shdsc_rfc4106_decap(ctx->sh_desc_dec, &ctx->cdata, ivsize,
                                  ctx->authsize, true);

        return 0;
}

static int rfc4106_setauthsize(struct crypto_aead *authenc,
                               unsigned int authsize)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(authenc);
        int err;

        err = crypto_rfc4106_check_authsize(authsize);
        if (err)
                return err;

        ctx->authsize = authsize;
        rfc4106_set_sh_desc(authenc);

        return 0;
}

static int rfc4106_setkey(struct crypto_aead *aead,
                          const u8 *key, unsigned int keylen)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        struct device *jrdev = ctx->jrdev;
        int ret;

        ret = aes_check_keylen(keylen - 4);
        if (ret)
                return ret;

        print_hex_dump_devel("key in @" __stringify(__LINE__)": ",
                             DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);

        memcpy(ctx->key, key, keylen);
        /*
         * The last four bytes of the key material are used as the salt value
         * in the nonce. Update the AES key length.
         */
        ctx->cdata.keylen = keylen - 4;
        dma_sync_single_for_device(jrdev->parent, ctx->key_dma,
                                   ctx->cdata.keylen, ctx->dir);

        ret = rfc4106_set_sh_desc(aead);
        if (ret)
                return ret;

        /* 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");
                        return ret;
                }
        }

        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");
                        return ret;
                }
        }

        return 0;
}

static int rfc4543_set_sh_desc(struct crypto_aead *aead)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        unsigned int ivsize = crypto_aead_ivsize(aead);
        int rem_bytes = CAAM_DESC_BYTES_MAX - DESC_JOB_IO_LEN -
                        ctx->cdata.keylen;

        if (!ctx->cdata.keylen || !ctx->authsize)
                return 0;

        ctx->cdata.key_virt = ctx->key;

        /*
         * Job Descriptor and Shared Descriptor
         * must fit into the 64-word Descriptor h/w Buffer
         */
        if (rem_bytes >= DESC_QI_RFC4543_ENC_LEN) {
                ctx->cdata.key_inline = true;
        } else {
                ctx->cdata.key_inline = false;
                ctx->cdata.key_dma = ctx->key_dma;
        }

        cnstr_shdsc_rfc4543_encap(ctx->sh_desc_enc, &ctx->cdata, ivsize,
                                  ctx->authsize, true);

        /*
         * Job Descriptor and Shared Descriptor
         * must fit into the 64-word Descriptor h/w Buffer
         */
        if (rem_bytes >= DESC_QI_RFC4543_DEC_LEN) {
                ctx->cdata.key_inline = true;
        } else {
                ctx->cdata.key_inline = false;
                ctx->cdata.key_dma = ctx->key_dma;
        }

        cnstr_shdsc_rfc4543_decap(ctx->sh_desc_dec, &ctx->cdata, ivsize,
                                  ctx->authsize, true);

        return 0;
}

static int rfc4543_setauthsize(struct crypto_aead *authenc,
                               unsigned int authsize)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(authenc);

        if (authsize != 16)
                return -EINVAL;

        ctx->authsize = authsize;
        rfc4543_set_sh_desc(authenc);

        return 0;
}

static int rfc4543_setkey(struct crypto_aead *aead,
                          const u8 *key, unsigned int keylen)
{
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        struct device *jrdev = ctx->jrdev;
        int ret;

        ret = aes_check_keylen(keylen - 4);
        if (ret)
                return ret;

        print_hex_dump_devel("key in @" __stringify(__LINE__)": ",
                             DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);

        memcpy(ctx->key, key, keylen);
        /*
         * The last four bytes of the key material are used as the salt value
         * in the nonce. Update the AES key length.
         */
        ctx->cdata.keylen = keylen - 4;
        dma_sync_single_for_device(jrdev->parent, ctx->key_dma,
                                   ctx->cdata.keylen, ctx->dir);

        ret = rfc4543_set_sh_desc(aead);
        if (ret)
                return ret;

        /* 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");
                        return ret;
                }
        }

        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");
                        return ret;
                }
        }

        return 0;
}

static int skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
                           unsigned int keylen, const u32 ctx1_iv_off)
{
        struct caam_ctx *ctx = crypto_skcipher_ctx_dma(skcipher);
        struct caam_skcipher_alg *alg =
                container_of(crypto_skcipher_alg(skcipher), typeof(*alg),
                             skcipher);
        struct device *jrdev = ctx->jrdev;
        unsigned int ivsize = crypto_skcipher_ivsize(skcipher);
        const bool is_rfc3686 = alg->caam.rfc3686;
        int ret = 0;

        print_hex_dump_devel("key in @" __stringify(__LINE__)": ",
                             DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);

        ctx->cdata.keylen = keylen;
        ctx->cdata.key_virt = key;
        ctx->cdata.key_inline = true;

        /* skcipher encrypt, decrypt shared descriptors */
        cnstr_shdsc_skcipher_encap(ctx->sh_desc_enc, &ctx->cdata, ivsize,
                                   is_rfc3686, ctx1_iv_off);
        cnstr_shdsc_skcipher_decap(ctx->sh_desc_dec, &ctx->cdata, ivsize,
                                   is_rfc3686, ctx1_iv_off);

        /* 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");
                        return -EINVAL;
                }
        }

        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");
                        return -EINVAL;
                }
        }

        return ret;
}

static int aes_skcipher_setkey(struct crypto_skcipher *skcipher,
                               const u8 *key, unsigned int keylen)
{
        int err;

        err = aes_check_keylen(keylen);
        if (err)
                return err;

        return skcipher_setkey(skcipher, key, keylen, 0);
}

static int rfc3686_skcipher_setkey(struct crypto_skcipher *skcipher,
                                   const u8 *key, unsigned int keylen)
{
        u32 ctx1_iv_off;
        int err;

        /*
         * RFC3686 specific:
         *      | CONTEXT1[255:128] = {NONCE, IV, COUNTER}
         *      | *key = {KEY, NONCE}
         */
        ctx1_iv_off = 16 + CTR_RFC3686_NONCE_SIZE;
        keylen -= CTR_RFC3686_NONCE_SIZE;

        err = aes_check_keylen(keylen);
        if (err)
                return err;

        return skcipher_setkey(skcipher, key, keylen, ctx1_iv_off);
}

static int ctr_skcipher_setkey(struct crypto_skcipher *skcipher,
                               const u8 *key, unsigned int keylen)
{
        u32 ctx1_iv_off;
        int err;

        /*
         * AES-CTR needs to load IV in CONTEXT1 reg
         * at an offset of 128bits (16bytes)
         * CONTEXT1[255:128] = IV
         */
        ctx1_iv_off = 16;

        err = aes_check_keylen(keylen);
        if (err)
                return err;

        return skcipher_setkey(skcipher, key, keylen, ctx1_iv_off);
}

static int des3_skcipher_setkey(struct crypto_skcipher *skcipher,
                                const u8 *key, unsigned int keylen)
{
        return verify_skcipher_des3_key(skcipher, key) ?:
               skcipher_setkey(skcipher, key, keylen, 0);
}

static int des_skcipher_setkey(struct crypto_skcipher *skcipher,
                               const u8 *key, unsigned int keylen)
{
        return verify_skcipher_des_key(skcipher, key) ?:
               skcipher_setkey(skcipher, key, keylen, 0);
}

static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
                               unsigned int keylen)
{
        struct caam_ctx *ctx = crypto_skcipher_ctx_dma(skcipher);
        struct device *jrdev = ctx->jrdev;
        struct caam_drv_private *ctrlpriv = dev_get_drvdata(jrdev->parent);
        int ret = 0;
        int err;

        err = xts_verify_key(skcipher, key, keylen);
        if (err) {
                dev_dbg(jrdev, "key size mismatch\n");
                return err;
        }

        if (keylen != 2 * AES_KEYSIZE_128 && keylen != 2 * AES_KEYSIZE_256)
                ctx->xts_key_fallback = true;

        if (ctrlpriv->era <= 8 || ctx->xts_key_fallback) {
                err = crypto_skcipher_setkey(ctx->fallback, key, keylen);
                if (err)
                        return err;
        }

        ctx->cdata.keylen = keylen;
        ctx->cdata.key_virt = key;
        ctx->cdata.key_inline = true;

        /* xts skcipher encrypt, decrypt shared descriptors */
        cnstr_shdsc_xts_skcipher_encap(ctx->sh_desc_enc, &ctx->cdata);
        cnstr_shdsc_xts_skcipher_decap(ctx->sh_desc_dec, &ctx->cdata);

        /* 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");
                        return -EINVAL;
                }
        }

        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");
                        return -EINVAL;
                }
        }

        return ret;
}

/*
 * aead_edesc - s/w-extended aead 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
 * @qm_sg_dma: bus physical mapped address of h/w link table
 * @assoclen: associated data length, in CAAM endianness
 * @assoclen_dma: bus physical mapped address of req->assoclen
 * @drv_req: driver-specific request structure
 * @sgt: the h/w link table, followed by IV
 */
struct aead_edesc {
        int src_nents;
        int dst_nents;
        dma_addr_t iv_dma;
        int qm_sg_bytes;
        dma_addr_t qm_sg_dma;
        unsigned int assoclen;
        dma_addr_t assoclen_dma;
        struct caam_drv_req drv_req;
        struct qm_sg_entry sgt[];
};

/*
 * skcipher_edesc - s/w-extended skcipher 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
 * @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 skcipher_edesc {
        int src_nents;
        int dst_nents;
        dma_addr_t iv_dma;
        int qm_sg_bytes;
        dma_addr_t qm_sg_dma;
        struct caam_drv_req drv_req;
        struct qm_sg_entry sgt[];
};

static struct caam_drv_ctx *get_drv_ctx(struct caam_ctx *ctx,
                                        enum optype type)
{
        /*
         * This function is called on the fast path with values of 'type'
         * known at compile time. Invalid arguments are not expected and
         * thus no checks are made.
         */
        struct caam_drv_ctx *drv_ctx = ctx->drv_ctx[type];
        u32 *desc;

        if (unlikely(!drv_ctx)) {
                spin_lock(&ctx->lock);

                /* Read again to check if some other core init drv_ctx */
                drv_ctx = ctx->drv_ctx[type];
                if (!drv_ctx) {
                        int cpu;

                        if (type == ENCRYPT)
                                desc = ctx->sh_desc_enc;
                        else /* (type == DECRYPT) */
                                desc = ctx->sh_desc_dec;

                        cpu = smp_processor_id();
                        drv_ctx = caam_drv_ctx_init(ctx->qidev, &cpu, desc);
                        if (!IS_ERR(drv_ctx))
                                drv_ctx->op_type = type;

                        ctx->drv_ctx[type] = drv_ctx;
                }

                spin_unlock(&ctx->lock);
        }

        return drv_ctx;
}

static void caam_unmap(struct device *dev, struct scatterlist *src,
                       struct scatterlist *dst, int src_nents,
                       int dst_nents, dma_addr_t iv_dma, int ivsize,
                       enum dma_data_direction iv_dir, dma_addr_t qm_sg_dma,
                       int qm_sg_bytes)
{
        if (dst != src) {
                if (src_nents)
                        dma_unmap_sg(dev, src, src_nents, DMA_TO_DEVICE);
                if (dst_nents)
                        dma_unmap_sg(dev, dst, dst_nents, DMA_FROM_DEVICE);
        } else {
                dma_unmap_sg(dev, src, src_nents, DMA_BIDIRECTIONAL);
        }

        if (iv_dma)
                dma_unmap_single(dev, iv_dma, ivsize, iv_dir);
        if (qm_sg_bytes)
                dma_unmap_single(dev, qm_sg_dma, qm_sg_bytes, DMA_TO_DEVICE);
}

static void aead_unmap(struct device *dev,
                       struct aead_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, req->dst, edesc->src_nents, edesc->dst_nents,
                   edesc->iv_dma, ivsize, DMA_TO_DEVICE, edesc->qm_sg_dma,
                   edesc->qm_sg_bytes);
        dma_unmap_single(dev, edesc->assoclen_dma, 4, DMA_TO_DEVICE);
}

static void skcipher_unmap(struct device *dev, struct skcipher_edesc *edesc,
                           struct skcipher_request *req)
{
        struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
        int ivsize = crypto_skcipher_ivsize(skcipher);

        caam_unmap(dev, req->src, req->dst, edesc->src_nents, edesc->dst_nents,
                   edesc->iv_dma, ivsize, DMA_BIDIRECTIONAL, edesc->qm_sg_dma,
                   edesc->qm_sg_bytes);
}

static void aead_done(struct caam_drv_req *drv_req, u32 status)
{
        struct device *qidev;
        struct aead_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_dma(aead);
        int ecode = 0;

        qidev = caam_ctx->qidev;

        if (unlikely(status))
                ecode = caam_jr_strstatus(qidev, status);

        edesc = container_of(drv_req, typeof(*edesc), drv_req);
        aead_unmap(qidev, edesc, aead_req);

        aead_request_complete(aead_req, ecode);
        qi_cache_free(edesc);
}

/*
 * allocate and map the aead extended descriptor
 */
static struct aead_edesc *aead_edesc_alloc(struct aead_request *req,
                                           bool encrypt)
{
        struct crypto_aead *aead = crypto_aead_reqtfm(req);
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        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;
        int src_len, dst_len = 0;
        struct aead_edesc *edesc;
        dma_addr_t qm_sg_dma, iv_dma = 0;
        int ivsize = 0;
        unsigned int authsize = ctx->authsize;
        int qm_sg_index = 0, 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;

        drv_ctx = get_drv_ctx(ctx, encrypt ? ENCRYPT : DECRYPT);
        if (IS_ERR(drv_ctx))
                return ERR_CAST(drv_ctx);

        /* allocate space for base edesc and hw desc commands, link tables */
        edesc = qi_cache_alloc(flags);
        if (unlikely(!edesc)) {
                dev_err(qidev, "could not allocate extended descriptor\n");
                return ERR_PTR(-ENOMEM);
        }

        if (likely(req->src == req->dst)) {
                src_len = req->assoclen + req->cryptlen +
                          (encrypt ? authsize : 0);

                src_nents = sg_nents_for_len(req->src, src_len);
                if (unlikely(src_nents < 0)) {
                        dev_err(qidev, "Insufficient bytes (%d) in src S/G\n",
                                src_len);
                        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);
                }
        } else {
                src_len = req->assoclen + req->cryptlen;
                dst_len = src_len + (encrypt ? authsize : (-authsize));

                src_nents = sg_nents_for_len(req->src, src_len);
                if (unlikely(src_nents < 0)) {
                        dev_err(qidev, "Insufficient bytes (%d) in src S/G\n",
                                src_len);
                        qi_cache_free(edesc);
                        return ERR_PTR(src_nents);
                }

                dst_nents = sg_nents_for_len(req->dst, dst_len);
                if (unlikely(dst_nents < 0)) {
                        dev_err(qidev, "Insufficient bytes (%d) in dst S/G\n",
                                dst_len);
                        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;
                }

                if (dst_nents) {
                        mapped_dst_nents = dma_map_sg(qidev, req->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);
                        }
                } else {
                        mapped_dst_nents = 0;
                }
        }

        if ((alg->caam.rfc3686 && encrypt) || !alg->caam.geniv)
                ivsize = crypto_aead_ivsize(aead);

        /*
         * Create S/G table: req->assoclen, [IV,] req->src [, req->dst].
         * Input is not contiguous.
         * HW reads 4 S/G entries at a time; make sure the reads don't go beyond
         * the end of the table by allocating more S/G entries. Logic:
         * if (src != dst && output S/G)
         *      pad output S/G, if needed
         * else if (src == dst && S/G)
         *      overlapping S/Gs; pad one of them
         * else if (input S/G) ...
         *      pad input S/G, if needed
         */
        qm_sg_ents = 1 + !!ivsize + mapped_src_nents;
        if (mapped_dst_nents > 1)
                qm_sg_ents += pad_sg_nents(mapped_dst_nents);
        else if ((req->src == req->dst) && (mapped_src_nents > 1))
                qm_sg_ents = max(pad_sg_nents(qm_sg_ents),
                                 1 + !!ivsize + pad_sg_nents(mapped_src_nents));
        else
                qm_sg_ents = pad_sg_nents(qm_sg_ents);

        sg_table = &edesc->sgt[0];
        qm_sg_bytes = qm_sg_ents * sizeof(*sg_table);
        if (unlikely(offsetof(struct aead_edesc, sgt) + qm_sg_bytes + ivsize >
                     CAAM_QI_MEMCACHE_SIZE)) {
                dev_err(qidev, "No space for %d S/G entries and/or %dB IV\n",
                        qm_sg_ents, ivsize);
                caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, 0,
                           0, DMA_NONE, 0, 0);
                qi_cache_free(edesc);
                return ERR_PTR(-ENOMEM);
        }

        if (ivsize) {
                u8 *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, req->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->iv_dma = iv_dma;
        edesc->drv_req.app_ctx = req;
        edesc->drv_req.cbk = aead_done;
        edesc->drv_req.drv_ctx = drv_ctx;

        edesc->assoclen = cpu_to_caam32(req->assoclen);
        edesc->assoclen_dma = dma_map_single(qidev, &edesc->assoclen, 4,
                                             DMA_TO_DEVICE);
        if (dma_mapping_error(qidev, edesc->assoclen_dma)) {
                dev_err(qidev, "unable to map assoclen\n");
                caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents,
                           iv_dma, ivsize, DMA_TO_DEVICE, 0, 0);
                qi_cache_free(edesc);
                return ERR_PTR(-ENOMEM);
        }

        dma_to_qm_sg_one(sg_table, edesc->assoclen_dma, 4, 0);
        qm_sg_index++;
        if (ivsize) {
                dma_to_qm_sg_one(sg_table + qm_sg_index, iv_dma, ivsize, 0);
                qm_sg_index++;
        }
        sg_to_qm_sg_last(req->src, src_len, sg_table + qm_sg_index, 0);
        qm_sg_index += mapped_src_nents;

        if (mapped_dst_nents > 1)
                sg_to_qm_sg_last(req->dst, dst_len, 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");
                dma_unmap_single(qidev, edesc->assoclen_dma, 4, DMA_TO_DEVICE);
                caam_unmap(qidev, req->src, req->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->assoclen + req->cryptlen +
                  (encrypt ? ctx->authsize : (-ctx->authsize));
        in_len = 4 + 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) {
                if (mapped_src_nents == 1)
                        dma_to_qm_sg_one(&fd_sgt[0], sg_dma_address(req->src),
                                         out_len, 0);
                else
                        dma_to_qm_sg_one_ext(&fd_sgt[0], qm_sg_dma +
                                             (1 + !!ivsize) * sizeof(*sg_table),
                                             out_len, 0);
        } else if (mapped_dst_nents <= 1) {
                dma_to_qm_sg_one(&fd_sgt[0], sg_dma_address(req->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 inline int aead_crypt(struct aead_request *req, bool encrypt)
{
        struct aead_edesc *edesc;
        struct crypto_aead *aead = crypto_aead_reqtfm(req);
        struct caam_ctx *ctx = crypto_aead_ctx_dma(aead);
        int ret;

        if (unlikely(caam_congested))
                return -EAGAIN;

        /* allocate extended descriptor */
        edesc = aead_edesc_alloc(req, encrypt);
        if (IS_ERR(edesc))
                return PTR_ERR(edesc);

        /* Create and submit job descriptor */
        ret = caam_qi_enqueue(ctx->qidev, &edesc->drv_req);
        if (!ret) {
                ret = -EINPROGRESS;
        } else {
                aead_unmap(ctx->qidev, edesc, req);
                qi_cache_free(edesc);
        }

        return ret;
}

static int aead_encrypt(struct aead_request *req)
{
        return aead_crypt(req, true);
}

static int aead_decrypt(struct aead_request *req)
{
        return aead_crypt(req, false);
}

static int ipsec_gcm_encrypt(struct aead_request *req)
{
        return crypto_ipsec_check_assoclen(req->assoclen) ? : aead_crypt(req,
                                           true);
}

static int ipsec_gcm_decrypt(struct aead_request *req)
{
        return crypto_ipsec_check_assoclen(req->assoclen) ? : aead_crypt(req,
                                           false);
}

static inline u8 *skcipher_edesc_iv(struct skcipher_edesc *edesc)
{
        return PTR_ALIGN((u8 *)&edesc->sgt[0] + edesc->qm_sg_bytes,
                         dma_get_cache_alignment());
}

static void skcipher_done(struct caam_drv_req *drv_req, u32 status)
{
        struct skcipher_edesc *edesc;
        struct skcipher_request *req = drv_req->app_ctx;
        struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
        struct caam_ctx *caam_ctx = crypto_skcipher_ctx_dma(skcipher);
        struct device *qidev = caam_ctx->qidev;
        int ivsize = crypto_skcipher_ivsize(skcipher);
        int ecode = 0;

        dev_dbg(qidev, "%s %d: status 0x%x\n", __func__, __LINE__, status);

        edesc = container_of(drv_req, typeof(*edesc), drv_req);

        if (status)
                ecode = caam_jr_strstatus(qidev, status);

        print_hex_dump_debug("dstiv  @" __stringify(__LINE__)": ",
                             DUMP_PREFIX_ADDRESS, 16, 4, req->iv,
                             edesc->src_nents > 1 ? 100 : ivsize, 1);
        caam_dump_sg("dst    @" __stringify(__LINE__)": ",
                     DUMP_PREFIX_ADDRESS, 16, 4, req->dst,
                     edesc->dst_nents > 1 ? 100 : req->cryptlen, 1);

        skcipher_unmap(qidev, edesc, req);

        /*
         * The crypto API expects us to set the IV (req->iv) to the last
         * ciphertext block (CBC mode) or last counter (CTR mode).
         * This is used e.g. by the CTS mode.
         */
        if (!ecode)
                memcpy(req->iv, skcipher_edesc_iv(edesc), ivsize);

        qi_cache_free(edesc);
        skcipher_request_complete(req, ecode);
}

static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req,
                                                   bool encrypt)
{
        struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
        struct caam_ctx *ctx = crypto_skcipher_ctx_dma(skcipher);
        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 skcipher_edesc *edesc;
        dma_addr_t iv_dma;
        u8 *iv;
        int ivsize = crypto_skcipher_ivsize(skcipher);
        int dst_sg_idx, qm_sg_ents, qm_sg_bytes;
        struct qm_sg_entry *sg_table, *fd_sgt;
        struct caam_drv_ctx *drv_ctx;
        unsigned int len;

        drv_ctx = get_drv_ctx(ctx, encrypt ? ENCRYPT : DECRYPT);
        if (IS_ERR(drv_ctx))
                return ERR_CAST(drv_ctx);

        src_nents = sg_nents_for_len(req->src, req->cryptlen);
        if (unlikely(src_nents < 0)) {
                dev_err(qidev, "Insufficient bytes (%d) in src S/G\n",
                        req->cryptlen);
                return ERR_PTR(src_nents);
        }

        if (unlikely(req->src != req->dst)) {
                dst_nents = sg_nents_for_len(req->dst, req->cryptlen);
                if (unlikely(dst_nents < 0)) {
                        dev_err(qidev, "Insufficient bytes (%d) in dst S/G\n",
                                req->cryptlen);
                        return ERR_PTR(dst_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");
                        return ERR_PTR(-ENOMEM);
                }

                mapped_dst_nents = dma_map_sg(qidev, req->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);
                        return ERR_PTR(-ENOMEM);
                }
        } else {
                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");
                        return ERR_PTR(-ENOMEM);
                }
        }

        qm_sg_ents = 1 + mapped_src_nents;
        dst_sg_idx = qm_sg_ents;

        /*
         * Input, output HW S/G tables: [IV, src][dst, IV]
         * IV entries point to the same buffer
         * If src == dst, S/G entries are reused (S/G tables overlap)
         *
         * HW reads 4 S/G entries at a time; make sure the reads don't go beyond
         * the end of the table by allocating more S/G entries.
         */
        if (req->src != req->dst)
                qm_sg_ents += pad_sg_nents(mapped_dst_nents + 1);
        else
                qm_sg_ents = 1 + pad_sg_nents(qm_sg_ents);

        qm_sg_bytes = qm_sg_ents * sizeof(struct qm_sg_entry);

        len = offsetof(struct skcipher_edesc, sgt) + qm_sg_bytes;
        len = ALIGN(len, dma_get_cache_alignment());
        len += ivsize;

        if (unlikely(len > CAAM_QI_MEMCACHE_SIZE)) {
                dev_err(qidev, "No space for %d S/G entries and/or %dB IV\n",
                        qm_sg_ents, ivsize);
                caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, 0,
                           0, DMA_NONE, 0, 0);
                return ERR_PTR(-ENOMEM);
        }

        /* allocate space for base edesc, link tables and IV */
        edesc = qi_cache_alloc(flags);
        if (unlikely(!edesc)) {
                dev_err(qidev, "could not allocate extended descriptor\n");
                caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, 0,
                           0, DMA_NONE, 0, 0);
                return ERR_PTR(-ENOMEM);
        }

        edesc->src_nents = src_nents;
        edesc->dst_nents = dst_nents;
        edesc->qm_sg_bytes = qm_sg_bytes;
        edesc->drv_req.app_ctx = req;
        edesc->drv_req.cbk = skcipher_done;
        edesc->drv_req.drv_ctx = drv_ctx;

        /* Make sure IV is located in a DMAable area */
        sg_table = &edesc->sgt[0];
        iv = skcipher_edesc_iv(edesc);
        memcpy(iv, req->iv, ivsize);

        iv_dma = dma_map_single(qidev, iv, ivsize, DMA_BIDIRECTIONAL);
        if (dma_mapping_error(qidev, iv_dma)) {
                dev_err(qidev, "unable to map IV\n");
                caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents, 0,
                           0, DMA_NONE, 0, 0);
                qi_cache_free(edesc);
                return ERR_PTR(-ENOMEM);
        }

        edesc->iv_dma = iv_dma;

        dma_to_qm_sg_one(sg_table, iv_dma, ivsize, 0);
        sg_to_qm_sg(req->src, req->cryptlen, sg_table + 1, 0);

        if (req->src != req->dst)
                sg_to_qm_sg(req->dst, req->cryptlen, sg_table + dst_sg_idx, 0);

        dma_to_qm_sg_one(sg_table + dst_sg_idx + mapped_dst_nents, iv_dma,
                         ivsize, 0);

        edesc->qm_sg_dma = dma_map_single(qidev, sg_table, edesc->qm_sg_bytes,
                                          DMA_TO_DEVICE);
        if (dma_mapping_error(qidev, edesc->qm_sg_dma)) {
                dev_err(qidev, "unable to map S/G table\n");
                caam_unmap(qidev, req->src, req->dst, src_nents, dst_nents,
                           iv_dma, ivsize, DMA_BIDIRECTIONAL, 0, 0);
                qi_cache_free(edesc);
                return ERR_PTR(-ENOMEM);
        }

        fd_sgt = &edesc->drv_req.fd_sgt[0];

        dma_to_qm_sg_one_last_ext(&fd_sgt[1], edesc->qm_sg_dma,
                                  ivsize + req->cryptlen, 0);

        if (req->src == req->dst)
                dma_to_qm_sg_one_ext(&fd_sgt[0], edesc->qm_sg_dma +
                                     sizeof(*sg_table), req->cryptlen + ivsize,
                                     0);
        else
                dma_to_qm_sg_one_ext(&fd_sgt[0], edesc->qm_sg_dma + dst_sg_idx *
                                     sizeof(*sg_table), req->cryptlen + ivsize,
                                     0);

        return edesc;
}

static inline bool xts_skcipher_ivsize(struct skcipher_request *req)
{
        struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
        unsigned int ivsize = crypto_skcipher_ivsize(skcipher);

        return !!get_unaligned((u64 *)(req->iv + (ivsize / 2)));
}

static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt)
{
        struct skcipher_edesc *edesc;
        struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
        struct caam_ctx *ctx = crypto_skcipher_ctx_dma(skcipher);
        struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctx->jrdev->parent);
        int ret;

        /*
         * XTS is expected to return an error even for input length = 0
         * Note that the case input length < block size will be caught during
         * HW offloading and return an error.
         */
        if (!req->cryptlen && !ctx->fallback)
                return 0;

        if (ctx->fallback && ((ctrlpriv->era <= 8 && xts_skcipher_ivsize(req)) ||
                              ctx->xts_key_fallback)) {
                struct caam_skcipher_req_ctx *rctx = skcipher_request_ctx(req);

                skcipher_request_set_tfm(&rctx->fallback_req, ctx->fallback);
                skcipher_request_set_callback(&rctx->fallback_req,
                                              req->base.flags,
                                              req->base.complete,
                                              req->base.data);
                skcipher_request_set_crypt(&rctx->fallback_req, req->src,
                                           req->dst, req->cryptlen, req->iv);

                return encrypt ? crypto_skcipher_encrypt(&rctx->fallback_req) :
                                 crypto_skcipher_decrypt(&rctx->fallback_req);
        }

        if (unlikely(caam_congested))
                return -EAGAIN;

        /* allocate extended descriptor */
        edesc = skcipher_edesc_alloc(req, encrypt);
        if (IS_ERR(edesc))
                return PTR_ERR(edesc);

        ret = caam_qi_enqueue(ctx->qidev, &edesc->drv_req);
        if (!ret) {
                ret = -EINPROGRESS;
        } else {
                skcipher_unmap(ctx->qidev, edesc, req);
                qi_cache_free(edesc);
        }

        return ret;
}

static int skcipher_encrypt(struct skcipher_request *req)
{
        return skcipher_crypt(req, true);
}

static int skcipher_decrypt(struct skcipher_request *req)
{
        return skcipher_crypt(req, false);
}

static struct caam_skcipher_alg driver_algs[] = {
        {
                .skcipher = {
                        .base = {
                                .cra_name = "cbc(aes)",
                                .cra_driver_name = "cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aes_skcipher_setkey,
                        .encrypt = skcipher_encrypt,
                        .decrypt = skcipher_decrypt,
                        .min_keysize = AES_MIN_KEY_SIZE,
                        .max_keysize = AES_MAX_KEY_SIZE,
                        .ivsize = AES_BLOCK_SIZE,
                },
                .caam.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
        },
        {
                .skcipher = {
                        .base = {
                                .cra_name = "cbc(des3_ede)",
                                .cra_driver_name = "cbc-3des-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_skcipher_setkey,
                        .encrypt = skcipher_encrypt,
                        .decrypt = skcipher_decrypt,
                        .min_keysize = DES3_EDE_KEY_SIZE,
                        .max_keysize = DES3_EDE_KEY_SIZE,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                },
                .caam.class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
        },
        {
                .skcipher = {
                        .base = {
                                .cra_name = "cbc(des)",
                                .cra_driver_name = "cbc-des-caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = des_skcipher_setkey,
                        .encrypt = skcipher_encrypt,
                        .decrypt = skcipher_decrypt,
                        .min_keysize = DES_KEY_SIZE,
                        .max_keysize = DES_KEY_SIZE,
                        .ivsize = DES_BLOCK_SIZE,
                },
                .caam.class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
        },
        {
                .skcipher = {
                        .base = {
                                .cra_name = "ctr(aes)",
                                .cra_driver_name = "ctr-aes-caam-qi",
                                .cra_blocksize = 1,
                        },
                        .setkey = ctr_skcipher_setkey,
                        .encrypt = skcipher_encrypt,
                        .decrypt = skcipher_decrypt,
                        .min_keysize = AES_MIN_KEY_SIZE,
                        .max_keysize = AES_MAX_KEY_SIZE,
                        .ivsize = AES_BLOCK_SIZE,
                        .chunksize = AES_BLOCK_SIZE,
                },
                .caam.class1_alg_type = OP_ALG_ALGSEL_AES |
                                        OP_ALG_AAI_CTR_MOD128,
        },
        {
                .skcipher = {
                        .base = {
                                .cra_name = "rfc3686(ctr(aes))",
                                .cra_driver_name = "rfc3686-ctr-aes-caam-qi",
                                .cra_blocksize = 1,
                        },
                        .setkey = rfc3686_skcipher_setkey,
                        .encrypt = skcipher_encrypt,
                        .decrypt = skcipher_decrypt,
                        .min_keysize = AES_MIN_KEY_SIZE +
                                       CTR_RFC3686_NONCE_SIZE,
                        .max_keysize = AES_MAX_KEY_SIZE +
                                       CTR_RFC3686_NONCE_SIZE,
                        .ivsize = CTR_RFC3686_IV_SIZE,
                        .chunksize = AES_BLOCK_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES |
                                           OP_ALG_AAI_CTR_MOD128,
                        .rfc3686 = true,
                },
        },
        {
                .skcipher = {
                        .base = {
                                .cra_name = "xts(aes)",
                                .cra_driver_name = "xts-aes-caam-qi",
                                .cra_flags = CRYPTO_ALG_NEED_FALLBACK,
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = xts_skcipher_setkey,
                        .encrypt = skcipher_encrypt,
                        .decrypt = skcipher_decrypt,
                        .min_keysize = 2 * AES_MIN_KEY_SIZE,
                        .max_keysize = 2 * AES_MAX_KEY_SIZE,
                        .ivsize = AES_BLOCK_SIZE,
                },
                .caam.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_XTS,
        },
};

static struct caam_aead_alg driver_aeads[] = {
        {
                .aead = {
                        .base = {
                                .cra_name = "rfc4106(gcm(aes))",
                                .cra_driver_name = "rfc4106-gcm-aes-caam-qi",
                                .cra_blocksize = 1,
                        },
                        .setkey = rfc4106_setkey,
                        .setauthsize = rfc4106_setauthsize,
                        .encrypt = ipsec_gcm_encrypt,
                        .decrypt = ipsec_gcm_decrypt,
                        .ivsize = 8,
                        .maxauthsize = AES_BLOCK_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_GCM,
                        .nodkp = true,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "rfc4543(gcm(aes))",
                                .cra_driver_name = "rfc4543-gcm-aes-caam-qi",
                                .cra_blocksize = 1,
                        },
                        .setkey = rfc4543_setkey,
                        .setauthsize = rfc4543_setauthsize,
                        .encrypt = ipsec_gcm_encrypt,
                        .decrypt = ipsec_gcm_decrypt,
                        .ivsize = 8,
                        .maxauthsize = AES_BLOCK_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_GCM,
                        .nodkp = true,
                },
        },
        /* Galois Counter Mode */
        {
                .aead = {
                        .base = {
                                .cra_name = "gcm(aes)",
                                .cra_driver_name = "gcm-aes-caam-qi",
                                .cra_blocksize = 1,
                        },
                        .setkey = gcm_setkey,
                        .setauthsize = gcm_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = 12,
                        .maxauthsize = AES_BLOCK_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_GCM,
                        .nodkp = true,
                }
        },
        /* single-pass ipsec_esp descriptor */
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(md5),cbc(aes))",
                                .cra_driver_name = "authenc-hmac-md5-"
                                                   "cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = MD5_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_MD5 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(md5),"
                                            "cbc(aes)))",
                                .cra_driver_name = "echainiv-authenc-hmac-md5-"
                                                   "cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = MD5_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_MD5 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha1),cbc(aes))",
                                .cra_driver_name = "authenc-hmac-sha1-"
                                                   "cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_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,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha1),"
                                            "cbc(aes)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha1-cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_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,
                        .geniv = true,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha224),cbc(aes))",
                                .cra_driver_name = "authenc-hmac-sha224-"
                                                   "cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = SHA224_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA224 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha224),"
                                            "cbc(aes)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha224-cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = SHA224_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA224 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha256),cbc(aes))",
                                .cra_driver_name = "authenc-hmac-sha256-"
                                                   "cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = SHA256_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA256 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha256),"
                                            "cbc(aes)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha256-cbc-aes-"
                                                   "caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = SHA256_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA256 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha384),cbc(aes))",
                                .cra_driver_name = "authenc-hmac-sha384-"
                                                   "cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = SHA384_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA384 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha384),"
                                            "cbc(aes)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha384-cbc-aes-"
                                                   "caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = SHA384_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA384 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha512),cbc(aes))",
                                .cra_driver_name = "authenc-hmac-sha512-"
                                                   "cbc-aes-caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = SHA512_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA512 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha512),"
                                            "cbc(aes)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha512-cbc-aes-"
                                                   "caam-qi",
                                .cra_blocksize = AES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = AES_BLOCK_SIZE,
                        .maxauthsize = SHA512_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA512 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(md5),cbc(des3_ede))",
                                .cra_driver_name = "authenc-hmac-md5-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = MD5_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_MD5 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(md5),"
                                            "cbc(des3_ede)))",
                                .cra_driver_name = "echainiv-authenc-hmac-md5-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = MD5_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_MD5 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha1),"
                                            "cbc(des3_ede))",
                                .cra_driver_name = "authenc-hmac-sha1-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA1_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA1 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha1),"
                                            "cbc(des3_ede)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha1-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA1_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA1 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha224),"
                                            "cbc(des3_ede))",
                                .cra_driver_name = "authenc-hmac-sha224-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA224_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA224 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha224),"
                                            "cbc(des3_ede)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha224-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA224_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA224 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha256),"
                                            "cbc(des3_ede))",
                                .cra_driver_name = "authenc-hmac-sha256-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA256_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA256 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha256),"
                                            "cbc(des3_ede)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha256-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA256_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA256 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha384),"
                                            "cbc(des3_ede))",
                                .cra_driver_name = "authenc-hmac-sha384-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA384_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA384 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha384),"
                                            "cbc(des3_ede)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha384-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA384_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA384 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha512),"
                                            "cbc(des3_ede))",
                                .cra_driver_name = "authenc-hmac-sha512-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA512_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA512 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha512),"
                                            "cbc(des3_ede)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha512-"
                                                   "cbc-des3_ede-caam-qi",
                                .cra_blocksize = DES3_EDE_BLOCK_SIZE,
                        },
                        .setkey = des3_aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES3_EDE_BLOCK_SIZE,
                        .maxauthsize = SHA512_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA512 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(md5),cbc(des))",
                                .cra_driver_name = "authenc-hmac-md5-"
                                                   "cbc-des-caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = MD5_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_MD5 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(md5),"
                                            "cbc(des)))",
                                .cra_driver_name = "echainiv-authenc-hmac-md5-"
                                                   "cbc-des-caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = MD5_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_MD5 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha1),cbc(des))",
                                .cra_driver_name = "authenc-hmac-sha1-"
                                                   "cbc-des-caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA1_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA1 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha1),"
                                            "cbc(des)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha1-cbc-des-caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA1_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA1 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha224),cbc(des))",
                                .cra_driver_name = "authenc-hmac-sha224-"
                                                   "cbc-des-caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA224_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA224 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha224),"
                                            "cbc(des)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha224-cbc-des-"
                                                   "caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA224_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA224 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha256),cbc(des))",
                                .cra_driver_name = "authenc-hmac-sha256-"
                                                   "cbc-des-caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA256_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA256 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha256),"
                                            "cbc(des)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha256-cbc-des-"
                                                   "caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA256_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA256 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha384),cbc(des))",
                                .cra_driver_name = "authenc-hmac-sha384-"
                                                   "cbc-des-caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA384_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA384 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                },
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha384),"
                                            "cbc(des)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha384-cbc-des-"
                                                   "caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA384_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA384 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "authenc(hmac(sha512),cbc(des))",
                                .cra_driver_name = "authenc-hmac-sha512-"
                                                   "cbc-des-caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA512_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA512 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                }
        },
        {
                .aead = {
                        .base = {
                                .cra_name = "echainiv(authenc(hmac(sha512),"
                                            "cbc(des)))",
                                .cra_driver_name = "echainiv-authenc-"
                                                   "hmac-sha512-cbc-des-"
                                                   "caam-qi",
                                .cra_blocksize = DES_BLOCK_SIZE,
                        },
                        .setkey = aead_setkey,
                        .setauthsize = aead_setauthsize,
                        .encrypt = aead_encrypt,
                        .decrypt = aead_decrypt,
                        .ivsize = DES_BLOCK_SIZE,
                        .maxauthsize = SHA512_DIGEST_SIZE,
                },
                .caam = {
                        .class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
                        .class2_alg_type = OP_ALG_ALGSEL_SHA512 |
                                           OP_ALG_AAI_HMAC_PRECOMP,
                        .geniv = true,
                }
        },
};

static int caam_init_common(struct caam_ctx *ctx, struct caam_alg_entry *caam,
                            bool uses_dkp)
{
        struct caam_drv_private *priv;
        struct device *dev;

        /*
         * distribute tfms across job rings to ensure in-order
         * crypto request processing per tfm
         */
        ctx->jrdev = caam_jr_alloc();
        if (IS_ERR(ctx->jrdev)) {
                pr_err("Job Ring Device allocation for transform failed\n");
                return PTR_ERR(ctx->jrdev);
        }

        dev = ctx->jrdev->parent;
        priv = dev_get_drvdata(dev);
        if (priv->era >= 6 && uses_dkp)
                ctx->dir = DMA_BIDIRECTIONAL;
        else
                ctx->dir = DMA_TO_DEVICE;

        ctx->key_dma = dma_map_single(dev, ctx->key, sizeof(ctx->key),
                                      ctx->dir);
        if (dma_mapping_error(dev, ctx->key_dma)) {
                dev_err(dev, "unable to map key\n");
                caam_jr_free(ctx->jrdev);
                return -ENOMEM;
        }

        /* copy descriptor header template value */
        ctx->cdata.algtype = OP_TYPE_CLASS1_ALG | caam->class1_alg_type;
        ctx->adata.algtype = OP_TYPE_CLASS2_ALG | caam->class2_alg_type;

        ctx->qidev = dev;

        spin_lock_init(&ctx->lock);
        ctx->drv_ctx[ENCRYPT] = NULL;
        ctx->drv_ctx[DECRYPT] = NULL;

        return 0;
}

static int caam_cra_init(struct crypto_skcipher *tfm)
{
        struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
        struct caam_skcipher_alg *caam_alg =
                container_of(alg, typeof(*caam_alg), skcipher);
        struct caam_ctx *ctx = crypto_skcipher_ctx_dma(tfm);
        u32 alg_aai = caam_alg->caam.class1_alg_type & OP_ALG_AAI_MASK;
        int ret = 0;

        if (alg_aai == OP_ALG_AAI_XTS) {
                const char *tfm_name = crypto_tfm_alg_name(&tfm->base);
                struct crypto_skcipher *fallback;

                fallback = crypto_alloc_skcipher(tfm_name, 0,
                                                 CRYPTO_ALG_NEED_FALLBACK);
                if (IS_ERR(fallback)) {
                        pr_err("Failed to allocate %s fallback: %ld\n",
                               tfm_name, PTR_ERR(fallback));
                        return PTR_ERR(fallback);
                }

                ctx->fallback = fallback;
                crypto_skcipher_set_reqsize(tfm, sizeof(struct caam_skcipher_req_ctx) +
                                            crypto_skcipher_reqsize(fallback));
        }

        ret = caam_init_common(ctx, &caam_alg->caam, false);
        if (ret && ctx->fallback)
                crypto_free_skcipher(ctx->fallback);

        return ret;
}

static int caam_aead_init(struct crypto_aead *tfm)
{
        struct aead_alg *alg = crypto_aead_alg(tfm);
        struct caam_aead_alg *caam_alg = container_of(alg, typeof(*caam_alg),
                                                      aead);
        struct caam_ctx *ctx = crypto_aead_ctx_dma(tfm);

        return caam_init_common(ctx, &caam_alg->caam, !caam_alg->caam.nodkp);
}

static void caam_exit_common(struct caam_ctx *ctx)
{
        caam_drv_ctx_rel(ctx->drv_ctx[ENCRYPT]);
        caam_drv_ctx_rel(ctx->drv_ctx[DECRYPT]);

        dma_unmap_single(ctx->jrdev->parent, ctx->key_dma, sizeof(ctx->key),
                         ctx->dir);

        caam_jr_free(ctx->jrdev);
}

static void caam_cra_exit(struct crypto_skcipher *tfm)
{
        struct caam_ctx *ctx = crypto_skcipher_ctx_dma(tfm);

        if (ctx->fallback)
                crypto_free_skcipher(ctx->fallback);
        caam_exit_common(ctx);
}

static void caam_aead_exit(struct crypto_aead *tfm)
{
        caam_exit_common(crypto_aead_ctx_dma(tfm));
}

void caam_qi_algapi_exit(void)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(driver_aeads); i++) {
                struct caam_aead_alg *t_alg = driver_aeads + i;

                if (t_alg->registered)
                        crypto_unregister_aead(&t_alg->aead);
        }

        for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
                struct caam_skcipher_alg *t_alg = driver_algs + i;

                if (t_alg->registered)
                        crypto_unregister_skcipher(&t_alg->skcipher);
        }
}

static void caam_skcipher_alg_init(struct caam_skcipher_alg *t_alg)
{
        struct skcipher_alg *alg = &t_alg->skcipher;

        alg->base.cra_module = THIS_MODULE;
        alg->base.cra_priority = CAAM_CRA_PRIORITY;
        alg->base.cra_ctxsize = sizeof(struct caam_ctx) + crypto_dma_padding();
        alg->base.cra_flags |= (CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY |
                                CRYPTO_ALG_KERN_DRIVER_ONLY);

        alg->init = caam_cra_init;
        alg->exit = caam_cra_exit;
}

static void caam_aead_alg_init(struct caam_aead_alg *t_alg)
{
        struct aead_alg *alg = &t_alg->aead;

        alg->base.cra_module = THIS_MODULE;
        alg->base.cra_priority = CAAM_CRA_PRIORITY;
        alg->base.cra_ctxsize = sizeof(struct caam_ctx) + crypto_dma_padding();
        alg->base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY |
                              CRYPTO_ALG_KERN_DRIVER_ONLY;

        alg->init = caam_aead_init;
        alg->exit = caam_aead_exit;
}

int caam_qi_algapi_init(struct device *ctrldev)
{
        struct caam_drv_private *priv = dev_get_drvdata(ctrldev);
        int i = 0, err = 0;
        u32 aes_vid, aes_inst, des_inst, md_vid, md_inst;
        unsigned int md_limit = SHA512_DIGEST_SIZE;
        bool registered = false;

        /* Make sure this runs only on (DPAA 1.x) QI */
        if (!priv->qi_present || caam_dpaa2)
                return 0;

        /*
         * Register crypto algorithms the device supports.
         * First, detect presence and attributes of DES, AES, and MD blocks.
         */
        if (priv->era < 10) {
                u32 cha_vid, cha_inst;

                cha_vid = rd_reg32(&priv->ctrl->perfmon.cha_id_ls);
                aes_vid = cha_vid & CHA_ID_LS_AES_MASK;
                md_vid = (cha_vid & CHA_ID_LS_MD_MASK) >> CHA_ID_LS_MD_SHIFT;

                cha_inst = rd_reg32(&priv->ctrl->perfmon.cha_num_ls);
                des_inst = (cha_inst & CHA_ID_LS_DES_MASK) >>
                           CHA_ID_LS_DES_SHIFT;
                aes_inst = cha_inst & CHA_ID_LS_AES_MASK;
                md_inst = (cha_inst & CHA_ID_LS_MD_MASK) >> CHA_ID_LS_MD_SHIFT;
        } else {
                u32 aesa, mdha;

                aesa = rd_reg32(&priv->ctrl->vreg.aesa);
                mdha = rd_reg32(&priv->ctrl->vreg.mdha);

                aes_vid = (aesa & CHA_VER_VID_MASK) >> CHA_VER_VID_SHIFT;
                md_vid = (mdha & CHA_VER_VID_MASK) >> CHA_VER_VID_SHIFT;

                des_inst = rd_reg32(&priv->ctrl->vreg.desa) & CHA_VER_NUM_MASK;
                aes_inst = aesa & CHA_VER_NUM_MASK;
                md_inst = mdha & CHA_VER_NUM_MASK;
        }

        /* If MD is present, limit digest size based on LP256 */
        if (md_inst && md_vid  == CHA_VER_VID_MD_LP256)
                md_limit = SHA256_DIGEST_SIZE;

        for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
                struct caam_skcipher_alg *t_alg = driver_algs + i;
                u32 alg_sel = t_alg->caam.class1_alg_type & OP_ALG_ALGSEL_MASK;

                /* Skip DES algorithms if not supported by device */
                if (!des_inst &&
                    ((alg_sel == OP_ALG_ALGSEL_3DES) ||
                     (alg_sel == OP_ALG_ALGSEL_DES)))
                        continue;

                /* Skip AES algorithms if not supported by device */
                if (!aes_inst && (alg_sel == OP_ALG_ALGSEL_AES))
                        continue;

                caam_skcipher_alg_init(t_alg);

                err = crypto_register_skcipher(&t_alg->skcipher);
                if (err) {
                        dev_warn(ctrldev, "%s alg registration failed\n",
                                 t_alg->skcipher.base.cra_driver_name);
                        continue;
                }

                t_alg->registered = true;
                registered = true;
        }

        for (i = 0; i < ARRAY_SIZE(driver_aeads); i++) {
                struct caam_aead_alg *t_alg = driver_aeads + i;
                u32 c1_alg_sel = t_alg->caam.class1_alg_type &
                                 OP_ALG_ALGSEL_MASK;
                u32 c2_alg_sel = t_alg->caam.class2_alg_type &
                                 OP_ALG_ALGSEL_MASK;
                u32 alg_aai = t_alg->caam.class1_alg_type & OP_ALG_AAI_MASK;

                /* Skip DES algorithms if not supported by device */
                if (!des_inst &&
                    ((c1_alg_sel == OP_ALG_ALGSEL_3DES) ||
                     (c1_alg_sel == OP_ALG_ALGSEL_DES)))
                        continue;

                /* Skip AES algorithms if not supported by device */
                if (!aes_inst && (c1_alg_sel == OP_ALG_ALGSEL_AES))
                        continue;

                /*
                 * Check support for AES algorithms not available
                 * on LP devices.
                 */
                if (aes_vid  == CHA_VER_VID_AES_LP && alg_aai == OP_ALG_AAI_GCM)
                        continue;

                /*
                 * Skip algorithms requiring message digests
                 * if MD or MD size is not supported by device.
                 */
                if (c2_alg_sel &&
                    (!md_inst || (t_alg->aead.maxauthsize > md_limit)))
                        continue;

                caam_aead_alg_init(t_alg);

                err = crypto_register_aead(&t_alg->aead);
                if (err) {
                        pr_warn("%s alg registration failed\n",
                                t_alg->aead.base.cra_driver_name);
                        continue;
                }

                t_alg->registered = true;
                registered = true;
        }

        if (registered)
                dev_info(ctrldev, "algorithms registered in /proc/crypto\n");

        return err;
}
Linux
