openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

crypto: caam/jr - ablkcipher -> skcipher conversion 

Convert driver from deprecated ablkcipher API to skcipher.

Link: https://www.mail-archive.com/search?l=mid&q=20170728085622.GC19664@gondor.apana.org.au
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Horia Geantă 2018-08-06 15:43:59 +03:00 committed by Herbert Xu
parent aec48adce8
commit 5ca7badb1f
2 changed files with 208 additions and 241 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

448
drivers/crypto/caam/caamalg.c
View File

@ -2,7 +2,7 @@
* caam - Freescale FSL CAAM support for crypto API * caam - Freescale FSL CAAM support for crypto API
* *
* Copyright 2008-2011 Freescale Semiconductor, Inc. * Copyright 2008-2011 Freescale Semiconductor, Inc.
* Copyright 2016 NXP * Copyright 2016-2018 NXP
* *
* Based on talitos crypto API driver. * Based on talitos crypto API driver.
* *
@ -81,8 +81,6 @@
#define debug(format, arg...) #define debug(format, arg...)
#endif #endif
static struct list_head alg_list;
struct caam_alg_entry { struct caam_alg_entry {
int class1_alg_type; int class1_alg_type;
int class2_alg_type; int class2_alg_type;
@ -96,6 +94,12 @@ struct caam_aead_alg {
bool registered; bool registered;
}; };
struct caam_skcipher_alg {
struct skcipher_alg skcipher;
struct caam_alg_entry caam;
bool registered;
};
/* /*
* per-session context * per-session context
*/ */
@ -646,20 +650,20 @@ static int rfc4543_setkey(struct crypto_aead *aead,
return rfc4543_set_sh_desc(aead); return rfc4543_set_sh_desc(aead);
} }
static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, static int skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
const u8 *key, unsigned int keylen) unsigned int keylen)
{ {
struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher); struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablkcipher); struct caam_skcipher_alg *alg =
const char *alg_name = crypto_tfm_alg_name(tfm); container_of(crypto_skcipher_alg(skcipher), typeof(*alg),
skcipher);
struct device *jrdev = ctx->jrdev; struct device *jrdev = ctx->jrdev;
unsigned int ivsize = crypto_ablkcipher_ivsize(ablkcipher); unsigned int ivsize = crypto_skcipher_ivsize(skcipher);
u32 *desc; u32 *desc;
u32 ctx1_iv_off = 0; u32 ctx1_iv_off = 0;
const bool ctr_mode = ((ctx->cdata.algtype & OP_ALG_AAI_MASK) == const bool ctr_mode = ((ctx->cdata.algtype & OP_ALG_AAI_MASK) ==
OP_ALG_AAI_CTR_MOD128); OP_ALG_AAI_CTR_MOD128);
const bool is_rfc3686 = (ctr_mode && const bool is_rfc3686 = alg->caam.rfc3686;
(strstr(alg_name, "rfc3686") != NULL));
#ifdef DEBUG #ifdef DEBUG
print_hex_dump(KERN_ERR, "key in @"__stringify(__LINE__)": ", print_hex_dump(KERN_ERR, "key in @"__stringify(__LINE__)": ",
@ -687,14 +691,14 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
ctx->cdata.key_virt = key; ctx->cdata.key_virt = key;
ctx->cdata.key_inline = true; ctx->cdata.key_inline = true;
/* ablkcipher_encrypt shared descriptor */ /* skcipher_encrypt shared descriptor */
desc = ctx->sh_desc_enc; desc = ctx->sh_desc_enc;
cnstr_shdsc_ablkcipher_encap(desc, &ctx->cdata, ivsize, is_rfc3686, cnstr_shdsc_ablkcipher_encap(desc, &ctx->cdata, ivsize, is_rfc3686,
ctx1_iv_off); ctx1_iv_off);
dma_sync_single_for_device(jrdev, ctx->sh_desc_enc_dma, dma_sync_single_for_device(jrdev, ctx->sh_desc_enc_dma,
desc_bytes(desc), ctx->dir); desc_bytes(desc), ctx->dir);
/* ablkcipher_decrypt shared descriptor */ /* skcipher_decrypt shared descriptor */
desc = ctx->sh_desc_dec; desc = ctx->sh_desc_dec;
cnstr_shdsc_ablkcipher_decap(desc, &ctx->cdata, ivsize, is_rfc3686, cnstr_shdsc_ablkcipher_decap(desc, &ctx->cdata, ivsize, is_rfc3686,
ctx1_iv_off); ctx1_iv_off);
@ -704,16 +708,15 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
return 0; return 0;
} }
static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key,
const u8 *key, unsigned int keylen) unsigned int keylen)
{ {
struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher); struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
struct device *jrdev = ctx->jrdev; struct device *jrdev = ctx->jrdev;
u32 *desc; u32 *desc;
if (keylen != 2 * AES_MIN_KEY_SIZE && keylen != 2 * AES_MAX_KEY_SIZE) { if (keylen != 2 * AES_MIN_KEY_SIZE && keylen != 2 * AES_MAX_KEY_SIZE) {
crypto_ablkcipher_set_flags(ablkcipher, crypto_skcipher_set_flags(skcipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
CRYPTO_TFM_RES_BAD_KEY_LEN);
dev_err(jrdev, "key size mismatch\n"); dev_err(jrdev, "key size mismatch\n");
return -EINVAL; return -EINVAL;
} }
@ -722,13 +725,13 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
ctx->cdata.key_virt = key; ctx->cdata.key_virt = key;
ctx->cdata.key_inline = true; ctx->cdata.key_inline = true;
/* xts_ablkcipher_encrypt shared descriptor */ /* xts_skcipher_encrypt shared descriptor */
desc = ctx->sh_desc_enc; desc = ctx->sh_desc_enc;
cnstr_shdsc_xts_ablkcipher_encap(desc, &ctx->cdata); cnstr_shdsc_xts_ablkcipher_encap(desc, &ctx->cdata);
dma_sync_single_for_device(jrdev, ctx->sh_desc_enc_dma, dma_sync_single_for_device(jrdev, ctx->sh_desc_enc_dma,
desc_bytes(desc), ctx->dir); desc_bytes(desc), ctx->dir);
/* xts_ablkcipher_decrypt shared descriptor */ /* xts_skcipher_decrypt shared descriptor */
desc = ctx->sh_desc_dec; desc = ctx->sh_desc_dec;
cnstr_shdsc_xts_ablkcipher_decap(desc, &ctx->cdata); cnstr_shdsc_xts_ablkcipher_decap(desc, &ctx->cdata);
dma_sync_single_for_device(jrdev, ctx->sh_desc_dec_dma, dma_sync_single_for_device(jrdev, ctx->sh_desc_dec_dma,
@ -756,7 +759,7 @@ struct aead_edesc {
}; };
/* /*
* ablkcipher_edesc - s/w-extended ablkcipher descriptor * skcipher_edesc - s/w-extended skcipher descriptor
* @src_nents: number of segments in input s/w scatterlist * @src_nents: number of segments in input s/w scatterlist
* @dst_nents: number of segments in output s/w scatterlist * @dst_nents: number of segments in output s/w scatterlist
* @iv_dma: dma address of iv for checking continuity and link table * @iv_dma: dma address of iv for checking continuity and link table
@ -766,7 +769,7 @@ struct aead_edesc {
* @hw_desc: the h/w job descriptor followed by any referenced link tables * @hw_desc: the h/w job descriptor followed by any referenced link tables
* and IV * and IV
*/ */
struct ablkcipher_edesc { struct skcipher_edesc {
int src_nents; int src_nents;
int dst_nents; int dst_nents;
dma_addr_t iv_dma; dma_addr_t iv_dma;
@ -806,12 +809,11 @@ static void aead_unmap(struct device *dev,
edesc->sec4_sg_dma, edesc->sec4_sg_bytes); edesc->sec4_sg_dma, edesc->sec4_sg_bytes);
} }
static void ablkcipher_unmap(struct device *dev, static void skcipher_unmap(struct device *dev, struct skcipher_edesc *edesc,
struct ablkcipher_edesc *edesc, struct skcipher_request *req)
struct ablkcipher_request *req)
{ {
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req); struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
int ivsize = crypto_ablkcipher_ivsize(ablkcipher); int ivsize = crypto_skcipher_ivsize(skcipher);
caam_unmap(dev, req->src, req->dst, caam_unmap(dev, req->src, req->dst,
edesc->src_nents, edesc->dst_nents, edesc->src_nents, edesc->dst_nents,
@ -869,75 +871,74 @@ static void aead_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
aead_request_complete(req, err); aead_request_complete(req, err);
} }
static void ablkcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err, static void skcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
void *context) void *context)
{ {
struct ablkcipher_request *req = context; struct skcipher_request *req = context;
struct ablkcipher_edesc *edesc; struct skcipher_edesc *edesc;
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req); struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
int ivsize = crypto_ablkcipher_ivsize(ablkcipher); int ivsize = crypto_skcipher_ivsize(skcipher);
#ifdef DEBUG #ifdef DEBUG
dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err); dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
#endif #endif
edesc = container_of(desc, struct ablkcipher_edesc, hw_desc[0]); edesc = container_of(desc, struct skcipher_edesc, hw_desc[0]);
if (err) if (err)
caam_jr_strstatus(jrdev, err); caam_jr_strstatus(jrdev, err);
#ifdef DEBUG #ifdef DEBUG
print_hex_dump(KERN_ERR, "dstiv @"__stringify(__LINE__)": ", print_hex_dump(KERN_ERR, "dstiv @"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, req->info, DUMP_PREFIX_ADDRESS, 16, 4, req->iv,
edesc->src_nents > 1 ? 100 : ivsize, 1); edesc->src_nents > 1 ? 100 : ivsize, 1);
#endif #endif
caam_dump_sg(KERN_ERR, "dst @" __stringify(__LINE__)": ", caam_dump_sg(KERN_ERR, "dst @" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, req->dst, DUMP_PREFIX_ADDRESS, 16, 4, req->dst,
edesc->dst_nents > 1 ? 100 : req->nbytes, 1); edesc->dst_nents > 1 ? 100 : req->cryptlen, 1);
ablkcipher_unmap(jrdev, edesc, req); skcipher_unmap(jrdev, edesc, req);
/* /*
* The crypto API expects us to set the IV (req->info) to the last * The crypto API expects us to set the IV (req->iv) to the last
* ciphertext block. This is used e.g. by the CTS mode. * ciphertext block. This is used e.g. by the CTS mode.
*/ */
scatterwalk_map_and_copy(req->info, req->dst, req->nbytes - ivsize, scatterwalk_map_and_copy(req->iv, req->dst, req->cryptlen - ivsize,
ivsize, 0); ivsize, 0);
kfree(edesc); kfree(edesc);
ablkcipher_request_complete(req, err); skcipher_request_complete(req, err);
} }
static void ablkcipher_decrypt_done(struct device *jrdev, u32 *desc, u32 err, static void skcipher_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
void *context) void *context)
{ {
struct ablkcipher_request *req = context; struct skcipher_request *req = context;
struct ablkcipher_edesc *edesc; struct skcipher_edesc *edesc;
#ifdef DEBUG #ifdef DEBUG
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req); struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
int ivsize = crypto_ablkcipher_ivsize(ablkcipher); int ivsize = crypto_skcipher_ivsize(skcipher);
dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err); dev_err(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
#endif #endif
edesc = container_of(desc, struct ablkcipher_edesc, hw_desc[0]); edesc = container_of(desc, struct skcipher_edesc, hw_desc[0]);
if (err) if (err)
caam_jr_strstatus(jrdev, err); caam_jr_strstatus(jrdev, err);
#ifdef DEBUG #ifdef DEBUG
print_hex_dump(KERN_ERR, "dstiv @"__stringify(__LINE__)": ", print_hex_dump(KERN_ERR, "dstiv @"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, req->info, DUMP_PREFIX_ADDRESS, 16, 4, req->iv, ivsize, 1);
ivsize, 1);
#endif #endif
caam_dump_sg(KERN_ERR, "dst @" __stringify(__LINE__)": ", caam_dump_sg(KERN_ERR, "dst @" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, req->dst, DUMP_PREFIX_ADDRESS, 16, 4, req->dst,
edesc->dst_nents > 1 ? 100 : req->nbytes, 1); edesc->dst_nents > 1 ? 100 : req->cryptlen, 1);
ablkcipher_unmap(jrdev, edesc, req); skcipher_unmap(jrdev, edesc, req);
kfree(edesc); kfree(edesc);
ablkcipher_request_complete(req, err); skcipher_request_complete(req, err);
} }
/* /*
@ -1079,34 +1080,38 @@ static void init_authenc_job(struct aead_request *req,
} }
/* /*
* Fill in ablkcipher job descriptor * Fill in skcipher job descriptor
*/ */
static void init_ablkcipher_job(u32 *sh_desc, dma_addr_t ptr, static void init_skcipher_job(struct skcipher_request *req,
struct ablkcipher_edesc *edesc, struct skcipher_edesc *edesc,
struct ablkcipher_request *req) const bool encrypt)
{ {
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req); struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
int ivsize = crypto_ablkcipher_ivsize(ablkcipher); struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
int ivsize = crypto_skcipher_ivsize(skcipher);
u32 *desc = edesc->hw_desc; u32 *desc = edesc->hw_desc;
u32 *sh_desc;
u32 out_options = 0; u32 out_options = 0;
dma_addr_t dst_dma; dma_addr_t dst_dma, ptr;
int len; int len;
#ifdef DEBUG #ifdef DEBUG
print_hex_dump(KERN_ERR, "presciv@"__stringify(__LINE__)": ", print_hex_dump(KERN_ERR, "presciv@"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, req->info, DUMP_PREFIX_ADDRESS, 16, 4, req->iv, ivsize, 1);
ivsize, 1); pr_err("asked=%d, cryptlen%d\n",
pr_err("asked=%d, nbytes%d\n", (int)edesc->src_nents > 1 ? 100 : req->cryptlen, req->cryptlen);
(int)edesc->src_nents > 1 ? 100 : req->nbytes, req->nbytes);
#endif #endif
caam_dump_sg(KERN_ERR, "src @" __stringify(__LINE__)": ", caam_dump_sg(KERN_ERR, "src @" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, req->src, DUMP_PREFIX_ADDRESS, 16, 4, req->src,
edesc->src_nents > 1 ? 100 : req->nbytes, 1); edesc->src_nents > 1 ? 100 : req->cryptlen, 1);
sh_desc = encrypt ? ctx->sh_desc_enc : ctx->sh_desc_dec;
ptr = encrypt ? ctx->sh_desc_enc_dma : ctx->sh_desc_dec_dma;
len = desc_len(sh_desc); len = desc_len(sh_desc);
init_job_desc_shared(desc, ptr, len, HDR_SHARE_DEFER | HDR_REVERSE); init_job_desc_shared(desc, ptr, len, HDR_SHARE_DEFER | HDR_REVERSE);
append_seq_in_ptr(desc, edesc->sec4_sg_dma, req->nbytes + ivsize, append_seq_in_ptr(desc, edesc->sec4_sg_dma, req->cryptlen + ivsize,
LDST_SGF); LDST_SGF);
if (likely(req->src == req->dst)) { if (likely(req->src == req->dst)) {
@ -1121,7 +1126,7 @@ static void init_ablkcipher_job(u32 *sh_desc, dma_addr_t ptr,
out_options = LDST_SGF; out_options = LDST_SGF;
} }
} }
append_seq_out_ptr(desc, dst_dma, req->nbytes, out_options); append_seq_out_ptr(desc, dst_dma, req->cryptlen, out_options);
} }
/* /*
@ -1411,35 +1416,35 @@ static int aead_decrypt(struct aead_request *req)
} }
/* /*
* allocate and map the ablkcipher extended descriptor for ablkcipher * allocate and map the skcipher extended descriptor for skcipher
*/ */
static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req,
*req, int desc_bytes) int desc_bytes)
{ {
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req); struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher); struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
struct device *jrdev = ctx->jrdev; struct device *jrdev = ctx->jrdev;
gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ? gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
GFP_KERNEL : GFP_ATOMIC; GFP_KERNEL : GFP_ATOMIC;
int src_nents, mapped_src_nents, dst_nents = 0, mapped_dst_nents = 0; int src_nents, mapped_src_nents, dst_nents = 0, mapped_dst_nents = 0;
struct ablkcipher_edesc *edesc; struct skcipher_edesc *edesc;
dma_addr_t iv_dma; dma_addr_t iv_dma;
u8 *iv; u8 *iv;
int ivsize = crypto_ablkcipher_ivsize(ablkcipher); int ivsize = crypto_skcipher_ivsize(skcipher);
int dst_sg_idx, sec4_sg_ents, sec4_sg_bytes; int dst_sg_idx, sec4_sg_ents, sec4_sg_bytes;
src_nents = sg_nents_for_len(req->src, req->nbytes); src_nents = sg_nents_for_len(req->src, req->cryptlen);
if (unlikely(src_nents < 0)) { if (unlikely(src_nents < 0)) {
dev_err(jrdev, "Insufficient bytes (%d) in src S/G\n", dev_err(jrdev, "Insufficient bytes (%d) in src S/G\n",
req->nbytes); req->cryptlen);
return ERR_PTR(src_nents); return ERR_PTR(src_nents);
} }
if (req->dst != req->src) { if (req->dst != req->src) {
dst_nents = sg_nents_for_len(req->dst, req->nbytes); dst_nents = sg_nents_for_len(req->dst, req->cryptlen);
if (unlikely(dst_nents < 0)) { if (unlikely(dst_nents < 0)) {
dev_err(jrdev, "Insufficient bytes (%d) in dst S/G\n", dev_err(jrdev, "Insufficient bytes (%d) in dst S/G\n",
req->nbytes); req->cryptlen);
return ERR_PTR(dst_nents); return ERR_PTR(dst_nents);
} }
} }
@ -1488,12 +1493,12 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request
edesc->src_nents = src_nents; edesc->src_nents = src_nents;
edesc->dst_nents = dst_nents; edesc->dst_nents = dst_nents;
edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->sec4_sg_bytes = sec4_sg_bytes;
edesc->sec4_sg = (void *)edesc + sizeof(struct ablkcipher_edesc) + edesc->sec4_sg = (void *)edesc + sizeof(struct skcipher_edesc) +
desc_bytes; desc_bytes;
/* Make sure IV is located in a DMAable area */ /* Make sure IV is located in a DMAable area */
iv = (u8 *)edesc->hw_desc + desc_bytes + sec4_sg_bytes; iv = (u8 *)edesc->hw_desc + desc_bytes + sec4_sg_bytes;
memcpy(iv, req->info, ivsize); memcpy(iv, req->iv, ivsize);
iv_dma = dma_map_single(jrdev, iv, ivsize, DMA_TO_DEVICE); iv_dma = dma_map_single(jrdev, iv, ivsize, DMA_TO_DEVICE);
if (dma_mapping_error(jrdev, iv_dma)) { if (dma_mapping_error(jrdev, iv_dma)) {
@ -1525,7 +1530,7 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request
edesc->iv_dma = iv_dma; edesc->iv_dma = iv_dma;
#ifdef DEBUG #ifdef DEBUG
print_hex_dump(KERN_ERR, "ablkcipher sec4_sg@"__stringify(__LINE__)": ", print_hex_dump(KERN_ERR, "skcipher sec4_sg@" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, edesc->sec4_sg, DUMP_PREFIX_ADDRESS, 16, 4, edesc->sec4_sg,
sec4_sg_bytes, 1); sec4_sg_bytes, 1);
#endif #endif
@ -1533,185 +1538,187 @@ static struct ablkcipher_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request
return edesc; return edesc;
} }
static int ablkcipher_encrypt(struct ablkcipher_request *req) static int skcipher_encrypt(struct skcipher_request *req)
{ {
struct ablkcipher_edesc *edesc; struct skcipher_edesc *edesc;
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req); struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher); struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
struct device *jrdev = ctx->jrdev; struct device *jrdev = ctx->jrdev;
u32 *desc; u32 *desc;
int ret = 0; int ret = 0;
/* allocate extended descriptor */ /* allocate extended descriptor */
edesc = ablkcipher_edesc_alloc(req, DESC_JOB_IO_LEN * CAAM_CMD_SZ); edesc = skcipher_edesc_alloc(req, DESC_JOB_IO_LEN * CAAM_CMD_SZ);
if (IS_ERR(edesc)) if (IS_ERR(edesc))
return PTR_ERR(edesc); return PTR_ERR(edesc);
/* Create and submit job descriptor*/ /* Create and submit job descriptor*/
init_ablkcipher_job(ctx->sh_desc_enc, ctx->sh_desc_enc_dma, edesc, req); init_skcipher_job(req, edesc, true);
#ifdef DEBUG #ifdef DEBUG
print_hex_dump(KERN_ERR, "ablkcipher jobdesc@"__stringify(__LINE__)": ", print_hex_dump(KERN_ERR, "skcipher jobdesc@" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc, DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
desc_bytes(edesc->hw_desc), 1); desc_bytes(edesc->hw_desc), 1);
#endif #endif
desc = edesc->hw_desc; desc = edesc->hw_desc;
ret = caam_jr_enqueue(jrdev, desc, ablkcipher_encrypt_done, req); ret = caam_jr_enqueue(jrdev, desc, skcipher_encrypt_done, req);
if (!ret) { if (!ret) {
ret = -EINPROGRESS; ret = -EINPROGRESS;
} else { } else {
ablkcipher_unmap(jrdev, edesc, req); skcipher_unmap(jrdev, edesc, req);
kfree(edesc); kfree(edesc);
} }
return ret; return ret;
} }
static int ablkcipher_decrypt(struct ablkcipher_request *req) static int skcipher_decrypt(struct skcipher_request *req)
{ {
struct ablkcipher_edesc *edesc; struct skcipher_edesc *edesc;
struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req); struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher); struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
int ivsize = crypto_ablkcipher_ivsize(ablkcipher); int ivsize = crypto_skcipher_ivsize(skcipher);
struct device *jrdev = ctx->jrdev; struct device *jrdev = ctx->jrdev;
u32 *desc; u32 *desc;
int ret = 0; int ret = 0;
/* allocate extended descriptor */ /* allocate extended descriptor */
edesc = ablkcipher_edesc_alloc(req, DESC_JOB_IO_LEN * CAAM_CMD_SZ); edesc = skcipher_edesc_alloc(req, DESC_JOB_IO_LEN * CAAM_CMD_SZ);
if (IS_ERR(edesc)) if (IS_ERR(edesc))
return PTR_ERR(edesc); return PTR_ERR(edesc);
/* /*
* The crypto API expects us to set the IV (req->info) to the last * The crypto API expects us to set the IV (req->iv) to the last
* ciphertext block. * ciphertext block.
*/ */
scatterwalk_map_and_copy(req->info, req->src, req->nbytes - ivsize, scatterwalk_map_and_copy(req->iv, req->src, req->cryptlen - ivsize,
ivsize, 0); ivsize, 0);
/* Create and submit job descriptor*/ /* Create and submit job descriptor*/
init_ablkcipher_job(ctx->sh_desc_dec, ctx->sh_desc_dec_dma, edesc, req); init_skcipher_job(req, edesc, false);
desc = edesc->hw_desc; desc = edesc->hw_desc;
#ifdef DEBUG #ifdef DEBUG
print_hex_dump(KERN_ERR, "ablkcipher jobdesc@"__stringify(__LINE__)": ", print_hex_dump(KERN_ERR, "skcipher jobdesc@" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc, DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
desc_bytes(edesc->hw_desc), 1); desc_bytes(edesc->hw_desc), 1);
#endif #endif
ret = caam_jr_enqueue(jrdev, desc, ablkcipher_decrypt_done, req); ret = caam_jr_enqueue(jrdev, desc, skcipher_decrypt_done, req);
if (!ret) { if (!ret) {
ret = -EINPROGRESS; ret = -EINPROGRESS;
} else { } else {
ablkcipher_unmap(jrdev, edesc, req); skcipher_unmap(jrdev, edesc, req);
kfree(edesc); kfree(edesc);
} }
return ret; return ret;
} }
#define template_aead template_u.aead static struct caam_skcipher_alg driver_algs[] = {
#define template_ablkcipher template_u.ablkcipher
struct caam_alg_template {
char name[CRYPTO_MAX_ALG_NAME];
char driver_name[CRYPTO_MAX_ALG_NAME];
unsigned int blocksize;
u32 type;
union {
struct ablkcipher_alg ablkcipher;
} template_u;
u32 class1_alg_type;
u32 class2_alg_type;
};
static struct caam_alg_template driver_algs[] = {
/* ablkcipher descriptor */
{ {
.name = "cbc(aes)", .skcipher = {
.driver_name = "cbc-aes-caam", .base = {
.blocksize = AES_BLOCK_SIZE, .cra_name = "cbc(aes)",
.template_ablkcipher = { .cra_driver_name = "cbc-aes-caam",
.setkey = ablkcipher_setkey, .cra_blocksize = AES_BLOCK_SIZE,
.encrypt = ablkcipher_encrypt, },
.decrypt = ablkcipher_decrypt, .setkey = skcipher_setkey,
.encrypt = skcipher_encrypt,
.decrypt = skcipher_decrypt,
.min_keysize = AES_MIN_KEY_SIZE, .min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE, .max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE, .ivsize = AES_BLOCK_SIZE,
}, },
.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC, .caam.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC,
}, },
{ {
.name = "cbc(des3_ede)", .skcipher = {
.driver_name = "cbc-3des-caam", .base = {
.blocksize = DES3_EDE_BLOCK_SIZE, .cra_name = "cbc(des3_ede)",
.template_ablkcipher = { .cra_driver_name = "cbc-3des-caam",
.setkey = ablkcipher_setkey, .cra_blocksize = DES3_EDE_BLOCK_SIZE,
.encrypt = ablkcipher_encrypt, },
.decrypt = ablkcipher_decrypt, .setkey = skcipher_setkey,
.encrypt = skcipher_encrypt,
.decrypt = skcipher_decrypt,
.min_keysize = DES3_EDE_KEY_SIZE, .min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE, .max_keysize = DES3_EDE_KEY_SIZE,
.ivsize = DES3_EDE_BLOCK_SIZE, .ivsize = DES3_EDE_BLOCK_SIZE,
}, },
.class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC, .caam.class1_alg_type = OP_ALG_ALGSEL_3DES | OP_ALG_AAI_CBC,
}, },
{ {
.name = "cbc(des)", .skcipher = {
.driver_name = "cbc-des-caam", .base = {
.blocksize = DES_BLOCK_SIZE, .cra_name = "cbc(des)",
.template_ablkcipher = { .cra_driver_name = "cbc-des-caam",
.setkey = ablkcipher_setkey, .cra_blocksize = DES_BLOCK_SIZE,
.encrypt = ablkcipher_encrypt, },
.decrypt = ablkcipher_decrypt, .setkey = skcipher_setkey,
.encrypt = skcipher_encrypt,
.decrypt = skcipher_decrypt,
.min_keysize = DES_KEY_SIZE, .min_keysize = DES_KEY_SIZE,
.max_keysize = DES_KEY_SIZE, .max_keysize = DES_KEY_SIZE,
.ivsize = DES_BLOCK_SIZE, .ivsize = DES_BLOCK_SIZE,
}, },
.class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC, .caam.class1_alg_type = OP_ALG_ALGSEL_DES | OP_ALG_AAI_CBC,
}, },
{ {
.name = "ctr(aes)", .skcipher = {
.driver_name = "ctr-aes-caam", .base = {
.blocksize = 1, .cra_name = "ctr(aes)",
.template_ablkcipher = { .cra_driver_name = "ctr-aes-caam",
.setkey = ablkcipher_setkey, .cra_blocksize = 1,
.encrypt = ablkcipher_encrypt, },
.decrypt = ablkcipher_decrypt, .setkey = skcipher_setkey,
.geniv = "chainiv", .encrypt = skcipher_encrypt,
.decrypt = skcipher_decrypt,
.min_keysize = AES_MIN_KEY_SIZE, .min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE, .max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE, .ivsize = AES_BLOCK_SIZE,
}, .chunksize = AES_BLOCK_SIZE,
.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CTR_MOD128, },
.caam.class1_alg_type = OP_ALG_ALGSEL_AES |
OP_ALG_AAI_CTR_MOD128,
}, },
{ {
.name = "rfc3686(ctr(aes))", .skcipher = {
.driver_name = "rfc3686-ctr-aes-caam", .base = {
.blocksize = 1, .cra_name = "rfc3686(ctr(aes))",
.template_ablkcipher = { .cra_driver_name = "rfc3686-ctr-aes-caam",
.setkey = ablkcipher_setkey, .cra_blocksize = 1,
.encrypt = ablkcipher_encrypt, },
.decrypt = ablkcipher_decrypt, .setkey = skcipher_setkey,
.encrypt = skcipher_encrypt,
.decrypt = skcipher_decrypt,
.min_keysize = AES_MIN_KEY_SIZE + .min_keysize = AES_MIN_KEY_SIZE +
CTR_RFC3686_NONCE_SIZE, CTR_RFC3686_NONCE_SIZE,
.max_keysize = AES_MAX_KEY_SIZE + .max_keysize = AES_MAX_KEY_SIZE +
CTR_RFC3686_NONCE_SIZE, CTR_RFC3686_NONCE_SIZE,
.ivsize = CTR_RFC3686_IV_SIZE, .ivsize = CTR_RFC3686_IV_SIZE,
}, .chunksize = AES_BLOCK_SIZE,
.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CTR_MOD128, },
.caam = {
.class1_alg_type = OP_ALG_ALGSEL_AES |
OP_ALG_AAI_CTR_MOD128,
.rfc3686 = true,
},
}, },
{ {
.name = "xts(aes)", .skcipher = {
.driver_name = "xts-aes-caam", .base = {
.blocksize = AES_BLOCK_SIZE, .cra_name = "xts(aes)",
.template_ablkcipher = { .cra_driver_name = "xts-aes-caam",
.setkey = xts_ablkcipher_setkey, .cra_blocksize = AES_BLOCK_SIZE,
.encrypt = ablkcipher_encrypt, },
.decrypt = ablkcipher_decrypt, .setkey = xts_skcipher_setkey,
.geniv = "eseqiv", .encrypt = skcipher_encrypt,
.decrypt = skcipher_decrypt,
.min_keysize = 2 * AES_MIN_KEY_SIZE, .min_keysize = 2 * AES_MIN_KEY_SIZE,
.max_keysize = 2 * AES_MAX_KEY_SIZE, .max_keysize = 2 * AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE, .ivsize = AES_BLOCK_SIZE,
}, },
.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_XTS, .caam.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_XTS,
}, },
}; };
@ -2996,12 +3003,6 @@ static struct caam_aead_alg driver_aeads[] = {
}, },
}; };
struct caam_crypto_alg {
struct crypto_alg crypto_alg;
struct list_head entry;
struct caam_alg_entry caam;
};
static int caam_init_common(struct caam_ctx *ctx, struct caam_alg_entry *caam, static int caam_init_common(struct caam_ctx *ctx, struct caam_alg_entry *caam,
bool uses_dkp) bool uses_dkp)
{ {
@ -3042,14 +3043,14 @@ static int caam_init_common(struct caam_ctx *ctx, struct caam_alg_entry *caam,
return 0; return 0;
} }
static int caam_cra_init(struct crypto_tfm *tfm) static int caam_cra_init(struct crypto_skcipher *tfm)
{ {
struct crypto_alg *alg = tfm->__crt_alg; struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
struct caam_crypto_alg *caam_alg = struct caam_skcipher_alg *caam_alg =
container_of(alg, struct caam_crypto_alg, crypto_alg); container_of(alg, typeof(*caam_alg), skcipher);
struct caam_ctx *ctx = crypto_tfm_ctx(tfm);
return caam_init_common(ctx, &caam_alg->caam, false); return caam_init_common(crypto_skcipher_ctx(tfm), &caam_alg->caam,
false);
} }
static int caam_aead_init(struct crypto_aead *tfm) static int caam_aead_init(struct crypto_aead *tfm)
@ -3071,9 +3072,9 @@ static void caam_exit_common(struct caam_ctx *ctx)
caam_jr_free(ctx->jrdev); caam_jr_free(ctx->jrdev);
} }
static void caam_cra_exit(struct crypto_tfm *tfm) static void caam_cra_exit(struct crypto_skcipher *tfm)
{ {
caam_exit_common(crypto_tfm_ctx(tfm)); caam_exit_common(crypto_skcipher_ctx(tfm));
} }
static void caam_aead_exit(struct crypto_aead *tfm) static void caam_aead_exit(struct crypto_aead *tfm)
@ -3083,8 +3084,6 @@ static void caam_aead_exit(struct crypto_aead *tfm)
static void __exit caam_algapi_exit(void) static void __exit caam_algapi_exit(void)
{ {
struct caam_crypto_alg *t_alg, *n;
int i; int i;
for (i = 0; i < ARRAY_SIZE(driver_aeads); i++) { for (i = 0; i < ARRAY_SIZE(driver_aeads); i++) {
@ -3094,49 +3093,25 @@ static void __exit caam_algapi_exit(void)
crypto_unregister_aead(&t_alg->aead); crypto_unregister_aead(&t_alg->aead);
} }
if (!alg_list.next) for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
return; struct caam_skcipher_alg *t_alg = driver_algs + i;
list_for_each_entry_safe(t_alg, n, &alg_list, entry) { if (t_alg->registered)
crypto_unregister_alg(&t_alg->crypto_alg); crypto_unregister_skcipher(&t_alg->skcipher);
list_del(&t_alg->entry);
kfree(t_alg);
} }
} }
static struct caam_crypto_alg *caam_alg_alloc(struct caam_alg_template static void caam_skcipher_alg_init(struct caam_skcipher_alg *t_alg)
*template)
{ {
struct caam_crypto_alg *t_alg; struct skcipher_alg *alg = &t_alg->skcipher;
struct crypto_alg *alg;
t_alg = kzalloc(sizeof(*t_alg), GFP_KERNEL); alg->base.cra_module = THIS_MODULE;
if (!t_alg) { alg->base.cra_priority = CAAM_CRA_PRIORITY;
pr_err("failed to allocate t_alg\n"); alg->base.cra_ctxsize = sizeof(struct caam_ctx);
return ERR_PTR(-ENOMEM); alg->base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY;
}
alg = &t_alg->crypto_alg; alg->init = caam_cra_init;
alg->exit = caam_cra_exit;
snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", template->name);
snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
template->driver_name);
alg->cra_module = THIS_MODULE;
alg->cra_init = caam_cra_init;
alg->cra_exit = caam_cra_exit;
alg->cra_priority = CAAM_CRA_PRIORITY;
alg->cra_blocksize = template->blocksize;
alg->cra_alignmask = 0;
alg->cra_ctxsize = sizeof(struct caam_ctx);
alg->cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY |
CRYPTO_ALG_TYPE_ABLKCIPHER;
alg->cra_type = &crypto_ablkcipher_type;
alg->cra_ablkcipher = template->template_ablkcipher;
t_alg->caam.class1_alg_type = template->class1_alg_type;
t_alg->caam.class2_alg_type = template->class2_alg_type;
return t_alg;
} }
static void caam_aead_alg_init(struct caam_aead_alg *t_alg) static void caam_aead_alg_init(struct caam_aead_alg *t_alg)
@ -3188,8 +3163,6 @@ static int __init caam_algapi_init(void)
return -ENODEV; return -ENODEV;
INIT_LIST_HEAD(&alg_list);
/* /*
* Register crypto algorithms the device supports. * Register crypto algorithms the device supports.
* First, detect presence and attributes of DES, AES, and MD blocks. * First, detect presence and attributes of DES, AES, and MD blocks.
@ -3205,9 +3178,8 @@ static int __init caam_algapi_init(void)
md_limit = SHA256_DIGEST_SIZE; md_limit = SHA256_DIGEST_SIZE;
for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
struct caam_crypto_alg *t_alg; struct caam_skcipher_alg *t_alg = driver_algs + i;
struct caam_alg_template *alg = driver_algs + i; u32 alg_sel = t_alg->caam.class1_alg_type & OP_ALG_ALGSEL_MASK;
u32 alg_sel = alg->class1_alg_type & OP_ALG_ALGSEL_MASK;
/* Skip DES algorithms if not supported by device */ /* Skip DES algorithms if not supported by device */
if (!des_inst && if (!des_inst &&
@ -3224,26 +3196,20 @@ static int __init caam_algapi_init(void)
* on LP devices. * on LP devices.
*/ */
if ((cha_vid & CHA_ID_LS_AES_MASK) == CHA_ID_LS_AES_LP) if ((cha_vid & CHA_ID_LS_AES_MASK) == CHA_ID_LS_AES_LP)
if ((alg->class1_alg_type & OP_ALG_AAI_MASK) == if ((t_alg->caam.class1_alg_type & OP_ALG_AAI_MASK) ==
OP_ALG_AAI_XTS) OP_ALG_AAI_XTS)
continue; continue;
t_alg = caam_alg_alloc(alg); caam_skcipher_alg_init(t_alg);
if (IS_ERR(t_alg)) {
err = PTR_ERR(t_alg);
pr_warn("%s alg allocation failed\n", alg->driver_name);
continue;
}
err = crypto_register_alg(&t_alg->crypto_alg); err = crypto_register_skcipher(&t_alg->skcipher);
if (err) { if (err) {
pr_warn("%s alg registration failed\n", pr_warn("%s alg registration failed\n",
t_alg->crypto_alg.cra_driver_name); t_alg->skcipher.base.cra_driver_name);
kfree(t_alg);
continue; continue;
} }
list_add_tail(&t_alg->entry, &alg_list); t_alg->registered = true;
registered = true; registered = true;
} }

1
drivers/crypto/caam/compat.h
View File

@ -39,6 +39,7 @@
#include <crypto/authenc.h> #include <crypto/authenc.h>
#include <crypto/akcipher.h> #include <crypto/akcipher.h>
#include <crypto/scatterwalk.h> #include <crypto/scatterwalk.h>
#include <crypto/skcipher.h>
#include <crypto/internal/skcipher.h> #include <crypto/internal/skcipher.h>
#include <crypto/internal/hash.h> #include <crypto/internal/hash.h>
#include <crypto/internal/rsa.h> #include <crypto/internal/rsa.h>