Add driver support for SM3 module in JH8100 SoC. Updated dedicated dma allows access to 64-bit memory address space. Signed-off-by: Jia Jie Ho <jiajie.ho@xxxxxxxxxxxxxxxx> --- drivers/crypto/starfive/Kconfig | 23 ++ drivers/crypto/starfive/Makefile | 3 + drivers/crypto/starfive/jh7110-cryp.c | 48 ++- drivers/crypto/starfive/jh7110-cryp.h | 59 +++ drivers/crypto/starfive/jh7110-hash.c | 20 +- drivers/crypto/starfive/jh8100-sm3.c | 532 ++++++++++++++++++++++++++ 6 files changed, 676 insertions(+), 9 deletions(-) create mode 100644 drivers/crypto/starfive/jh8100-sm3.c diff --git a/drivers/crypto/starfive/Kconfig b/drivers/crypto/starfive/Kconfig index 0fe389e9f932..e05990f90685 100644 --- a/drivers/crypto/starfive/Kconfig +++ b/drivers/crypto/starfive/Kconfig @@ -24,3 +24,26 @@ config CRYPTO_DEV_JH7110 skciphers, AEAD and hash functions. If you choose 'M' here, this module will be called jh7110-crypto. + +config CRYPTO_DEV_JH8100 + tristate "StarFive JH8100 cryptographic engine drivers" + depends on (SOC_STARFIVE && DW_AXI_DMAC) || COMPILE_TEST + depends on HAS_DMA + select CRYPTO_ENGINE + select CRYPTO_HMAC + select CRYPTO_SHA256 + select CRYPTO_SHA512 + select CRYPTO_SM3_GENERIC + select CRYPTO_RSA + select CRYPTO_AES + select CRYPTO_CCM + select CRYPTO_GCM + select CRYPTO_CBC + select CRYPTO_ECB + select CRYPTO_CTR + help + Support for StarFive JH8100 crypto hardware acceleration engine. + This module provides additional support for SM2 signature verification, + SM3 hash/hmac functions and SM4 skcipher. + + If you choose 'M' here, this module will be called jh8100-crypto. diff --git a/drivers/crypto/starfive/Makefile b/drivers/crypto/starfive/Makefile index 8c137afe58ad..67717fca3f5d 100644 --- a/drivers/crypto/starfive/Makefile +++ b/drivers/crypto/starfive/Makefile @@ -2,3 +2,6 @@ obj-$(CONFIG_CRYPTO_DEV_JH7110) += jh7110-crypto.o jh7110-crypto-objs := jh7110-cryp.o jh7110-hash.o jh7110-rsa.o jh7110-aes.o + +obj-$(CONFIG_CRYPTO_DEV_JH8100) += jh8100-crypto.o +jh8100-crypto-objs := jh7110-cryp.o jh7110-hash.o jh7110-rsa.o jh7110-aes.o jh8100-sm3.o diff --git a/drivers/crypto/starfive/jh7110-cryp.c b/drivers/crypto/starfive/jh7110-cryp.c index fe33e87f25ab..fb7c19705fbf 100644 --- a/drivers/crypto/starfive/jh7110-cryp.c +++ b/drivers/crypto/starfive/jh7110-cryp.c @@ -106,6 +106,26 @@ static irqreturn_t starfive_cryp_irq(int irq, void *priv) return IRQ_HANDLED; } +#ifdef CONFIG_CRYPTO_DEV_JH8100 +static irqreturn_t starfive_cryp_irq1(int irq, void *priv) +{ + u32 status; + u32 mask; + struct starfive_cryp_dev *cryp = (struct starfive_cryp_dev *)priv; + + mask = readl(cryp->base + STARFIVE_SM_IE_MASK_OFFSET); + status = readl(cryp->base + STARFIVE_SM_IE_FLAG_OFFSET); + + if (status & STARFIVE_SM_IE_FLAG_SM3_DONE) { + mask |= STARFIVE_SM_IE_MASK_SM3_DONE; + writel(mask, cryp->base + STARFIVE_SM_IE_MASK_OFFSET); + tasklet_schedule(&cryp->sm3_done); + } + + return IRQ_HANDLED; +} +#endif + static int starfive_cryp_probe(struct platform_device *pdev) { struct starfive_cryp_dev *cryp; @@ -156,6 +176,16 @@ static int starfive_cryp_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, ret, "Failed to register interrupt handler\n"); +#ifdef CONFIG_CRYPTO_DEV_JH8100 + tasklet_init(&cryp->sm3_done, starfive_sm3_done_task, (unsigned long)cryp); + + irq = platform_get_irq(pdev, 1); + if (irq < 0) + return irq; + + ret = devm_request_irq(&pdev->dev, irq, starfive_cryp_irq1, 0, + pdev->name, (void *)cryp); +#endif clk_prepare_enable(cryp->hclk); clk_prepare_enable(cryp->ahb); reset_control_deassert(cryp->rst); @@ -191,8 +221,17 @@ static int starfive_cryp_probe(struct platform_device *pdev) if (ret) goto err_algs_rsa; +#ifdef CONFIG_CRYPTO_DEV_JH8100 + ret = starfive_sm3_register_algs(); + if (ret) + goto err_algs_sm3; +#endif return 0; +#ifdef CONFIG_CRYPTO_DEV_JH8100 +err_algs_sm3: + starfive_rsa_unregister_algs(); +#endif err_algs_rsa: starfive_hash_unregister_algs(); err_algs_hash: @@ -213,7 +252,9 @@ static int starfive_cryp_probe(struct platform_device *pdev) reset_control_assert(cryp->rst); tasklet_kill(&cryp->hash_done); - +#ifdef CONFIG_CRYPTO_DEV_JH8100 + tasklet_kill(&cryp->sm3_done); +#endif return ret; } @@ -226,7 +267,10 @@ static void starfive_cryp_remove(struct platform_device *pdev) starfive_rsa_unregister_algs(); tasklet_kill(&cryp->hash_done); - +#ifdef CONFIG_CRYPTO_DEV_JH8100 + starfive_sm3_unregister_algs(); + tasklet_kill(&cryp->sm3_done); +#endif crypto_engine_stop(cryp->engine); crypto_engine_exit(cryp->engine); diff --git a/drivers/crypto/starfive/jh7110-cryp.h b/drivers/crypto/starfive/jh7110-cryp.h index 3f8f0b001d41..e6c8496acbc9 100644 --- a/drivers/crypto/starfive/jh7110-cryp.h +++ b/drivers/crypto/starfive/jh7110-cryp.h @@ -19,12 +19,22 @@ #define STARFIVE_DMA_IN_LEN_OFFSET 0x10 #define STARFIVE_DMA_OUT_LEN_OFFSET 0x14 +#define STARFIVE_SM_ALG_CR_OFFSET 0x4000 +#define STARFIVE_SM_IE_MASK_OFFSET (STARFIVE_SM_ALG_CR_OFFSET + 0x4) +#define STARFIVE_SM_IE_FLAG_OFFSET (STARFIVE_SM_ALG_CR_OFFSET + 0x8) +#define STARFIVE_SM_DMA_IN_LEN_OFFSET (STARFIVE_SM_ALG_CR_OFFSET + 0xc) +#define STARFIVE_SM_DMA_OUT_LEN_OFFSET (STARFIVE_SM_ALG_CR_OFFSET + 0x10) +#define STARFIVE_SM_ALG_FIFO_IN_OFFSET (STARFIVE_SM_ALG_CR_OFFSET + 0x20) +#define STARFIVE_SM_ALG_FIFO_OUT_OFFSET (STARFIVE_SM_ALG_CR_OFFSET + 0x28) + #define STARFIVE_IE_MASK_AES_DONE 0x1 #define STARFIVE_IE_MASK_HASH_DONE 0x4 #define STARFIVE_IE_MASK_PKA_DONE 0x8 #define STARFIVE_IE_FLAG_AES_DONE 0x1 #define STARFIVE_IE_FLAG_HASH_DONE 0x4 #define STARFIVE_IE_FLAG_PKA_DONE 0x8 +#define STARFIVE_SM_IE_MASK_SM3_DONE 0x2 +#define STARFIVE_SM_IE_FLAG_SM3_DONE 0x2 #define STARFIVE_MSG_BUFFER_SIZE SZ_16K #define MAX_KEY_SIZE SHA512_BLOCK_SIZE @@ -68,6 +78,20 @@ union starfive_aes_csr { }; }; +union starfive_sm_alg_cr { + u32 v; + struct { + u32 start :1; + u32 sm4_dma_en :1; + u32 sm3_dma_en :1; + u32 rsvd_0 :1; + u32 alg_done :1; + u32 rsvd_1 :3; + u32 clear :1; + u32 rsvd_2 :23; + }; +}; + union starfive_hash_csr { u32 v; struct { @@ -132,6 +156,32 @@ union starfive_pka_casr { }; }; +union starfive_sm3_csr { + u32 v; + struct { + u32 start :1; + u32 reset :1; + u32 ie :1; + u32 firstb :1; +#define STARFIVE_SM3_MODE 0x0 + u32 mode :3; + u32 rsvd_0 :1; + u32 final :1; + u32 rsvd_1 :2; +#define STARFIVE_SM3_HMAC_FLAGS 0x800 + u32 hmac :1; + u32 rsvd_2 :1; +#define STARFIVE_SM3_KEY_DONE BIT(13) + u32 key_done :1; + u32 key_flag :1; + u32 hmac_done :1; +#define STARFIVE_SM3_BUSY BIT(16) + u32 busy :1; + u32 hashdone :1; + u32 rsvd_3 :14; + }; +}; + struct starfive_rsa_key { u8 *n; u8 *e; @@ -190,6 +240,7 @@ struct starfive_cryp_dev { struct scatter_walk out_walk; struct crypto_engine *engine; struct tasklet_struct hash_done; + struct tasklet_struct sm3_done; struct completion dma_done; size_t assoclen; size_t total_in; @@ -213,6 +264,7 @@ struct starfive_cryp_request_ctx { union starfive_hash_csr hash; union starfive_pka_cacr pka; union starfive_aes_csr aes; + union starfive_sm3_csr sm3; } csr; struct scatterlist *in_sg; @@ -239,4 +291,11 @@ int starfive_aes_register_algs(void); void starfive_aes_unregister_algs(void); void starfive_hash_done_task(unsigned long param); + +#ifdef CONFIG_CRYPTO_DEV_JH8100 +int starfive_sm3_register_algs(void); +void starfive_sm3_unregister_algs(void); + +void starfive_sm3_done_task(unsigned long param); +#endif #endif diff --git a/drivers/crypto/starfive/jh7110-hash.c b/drivers/crypto/starfive/jh7110-hash.c index 74e151b5f875..45cf82e64fb8 100644 --- a/drivers/crypto/starfive/jh7110-hash.c +++ b/drivers/crypto/starfive/jh7110-hash.c @@ -511,12 +511,6 @@ static int starfive_sha512_init_tfm(struct crypto_ahash *hash) STARFIVE_HASH_SHA512, 0); } -static int starfive_sm3_init_tfm(struct crypto_ahash *hash) -{ - return starfive_hash_init_tfm(hash, "sm3-generic", - STARFIVE_HASH_SM3, 0); -} - static int starfive_hmac_sha224_init_tfm(struct crypto_ahash *hash) { return starfive_hash_init_tfm(hash, "hmac(sha224-generic)", @@ -541,11 +535,19 @@ static int starfive_hmac_sha512_init_tfm(struct crypto_ahash *hash) STARFIVE_HASH_SHA512, 1); } +#ifndef CONFIG_CRYPTO_DEV_JH8100 +static int starfive_sm3_init_tfm(struct crypto_ahash *hash) +{ + return starfive_hash_init_tfm(hash, "sm3-generic", + STARFIVE_HASH_SM3, 0); +} + static int starfive_hmac_sm3_init_tfm(struct crypto_ahash *hash) { return starfive_hash_init_tfm(hash, "hmac(sm3-generic)", STARFIVE_HASH_SM3, 1); } +#endif static struct ahash_engine_alg algs_sha2_sm3[] = { { @@ -776,7 +778,10 @@ static struct ahash_engine_alg algs_sha2_sm3[] = { .op = { .do_one_request = starfive_hash_one_request, }, -}, { +}, + +#ifndef CONFIG_CRYPTO_DEV_JH8100 +{ .base.init = starfive_hash_init, .base.update = starfive_hash_update, .base.final = starfive_hash_final, @@ -834,6 +839,7 @@ static struct ahash_engine_alg algs_sha2_sm3[] = { .do_one_request = starfive_hash_one_request, }, }, +#endif }; int starfive_hash_register_algs(void) diff --git a/drivers/crypto/starfive/jh8100-sm3.c b/drivers/crypto/starfive/jh8100-sm3.c new file mode 100644 index 000000000000..7289c5fba0d8 --- /dev/null +++ b/drivers/crypto/starfive/jh8100-sm3.c @@ -0,0 +1,532 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SM3 Hash function and HMAC support for StarFive driver + * + * Copyright (c) 2022 - 2023 StarFive Technology + * + */ + +#include <crypto/engine.h> +#include <crypto/hash.h> +#include <crypto/scatterwalk.h> +#include <crypto/internal/hash.h> +#include "jh7110-cryp.h" +#include <linux/crypto.h> +#include <linux/io.h> +#include <linux/iopoll.h> + +#define STARFIVE_SM3_REGS_OFFSET 0x4200 +#define STARFIVE_SM3_CSR (STARFIVE_SM3_REGS_OFFSET + 0x0) +#define STARFIVE_SM3_WDR (STARFIVE_SM3_REGS_OFFSET + 0x4) +#define STARFIVE_SM3_RDR (STARFIVE_SM3_REGS_OFFSET + 0x8) +#define STARFIVE_SM3_WSR (STARFIVE_SM3_REGS_OFFSET + 0xC) +#define STARFIVE_SM3_WLEN3 (STARFIVE_SM3_REGS_OFFSET + 0x10) +#define STARFIVE_SM3_WLEN2 (STARFIVE_SM3_REGS_OFFSET + 0x14) +#define STARFIVE_SM3_WLEN1 (STARFIVE_SM3_REGS_OFFSET + 0x18) +#define STARFIVE_SM3_WLEN0 (STARFIVE_SM3_REGS_OFFSET + 0x1C) +#define STARFIVE_SM3_WKR (STARFIVE_SM3_REGS_OFFSET + 0x20) +#define STARFIVE_SM3_WKLEN (STARFIVE_SM3_REGS_OFFSET + 0x24) + +#define STARFIVE_SM3_BUFLEN SHA512_BLOCK_SIZE +#define STARFIVE_SM3_RESET 0x2 + +static inline int starfive_sm3_wait_busy(struct starfive_cryp_ctx *ctx) +{ + struct starfive_cryp_dev *cryp = ctx->cryp; + u32 status; + + return readl_relaxed_poll_timeout(cryp->base + STARFIVE_SM3_CSR, status, + !(status & STARFIVE_SM3_BUSY), 10, 100000); +} + +static inline int starfive_sm3_wait_key_done(struct starfive_cryp_ctx *ctx) +{ + struct starfive_cryp_dev *cryp = ctx->cryp; + u32 status; + + return readl_relaxed_poll_timeout(cryp->base + STARFIVE_SM3_CSR, status, + (status & STARFIVE_SM3_KEY_DONE), 10, 100000); +} + +static int starfive_sm3_hmac_key(struct starfive_cryp_ctx *ctx) +{ + struct starfive_cryp_request_ctx *rctx = ctx->rctx; + struct starfive_cryp_dev *cryp = ctx->cryp; + int klen = ctx->keylen, loop; + unsigned int *key = (unsigned int *)ctx->key; + unsigned char *cl; + + writel(ctx->keylen, cryp->base + STARFIVE_SM3_WKLEN); + + rctx->csr.sm3.hmac = 1; + rctx->csr.sm3.key_flag = 1; + + writel(rctx->csr.sm3.v, cryp->base + STARFIVE_SM3_CSR); + + for (loop = 0; loop < klen / sizeof(unsigned int); loop++, key++) + writel(*key, cryp->base + STARFIVE_SM3_WKR); + + if (klen & 0x3) { + cl = (unsigned char *)key; + for (loop = 0; loop < (klen & 0x3); loop++, cl++) + writeb(*cl, cryp->base + STARFIVE_SM3_WKR); + } + + if (starfive_sm3_wait_key_done(ctx)) + return dev_err_probe(cryp->dev, -ETIMEDOUT, + "starfive_sm3_wait_key_done error\n"); + + return 0; +} + +static void starfive_sm3_start(struct starfive_cryp_dev *cryp) +{ + union starfive_sm3_csr csr; + u32 mask; + + csr.v = readl(cryp->base + STARFIVE_SM3_CSR); + csr.firstb = 0; + csr.final = 1; + csr.ie = 1; + writel(csr.v, cryp->base + STARFIVE_SM3_CSR); + + mask = readl(cryp->base + STARFIVE_SM_IE_MASK_OFFSET); + mask &= ~STARFIVE_SM_IE_MASK_SM3_DONE; + writel(mask, cryp->base + STARFIVE_SM_IE_MASK_OFFSET); +} + +static void starfive_sm3_dma_callback(void *param) +{ + struct starfive_cryp_dev *cryp = param; + + complete(&cryp->dma_done); +} + +static void starfive_sm3_dma_init(struct starfive_cryp_dev *cryp) +{ + cryp->cfg_in.direction = DMA_MEM_TO_DEV; + cryp->cfg_in.src_addr_width = DMA_SLAVE_BUSWIDTH_8_BYTES; + cryp->cfg_in.dst_addr_width = DMA_SLAVE_BUSWIDTH_8_BYTES; + cryp->cfg_in.src_maxburst = cryp->dma_maxburst; + cryp->cfg_in.dst_maxburst = cryp->dma_maxburst; + cryp->cfg_in.dst_addr = cryp->phys_base + STARFIVE_SM_ALG_FIFO_IN_OFFSET; + + dmaengine_slave_config(cryp->tx, &cryp->cfg_in); + + init_completion(&cryp->dma_done); +} + +static int starfive_sm3_dma_xfer(struct starfive_cryp_dev *cryp, + struct scatterlist *sg) +{ + struct dma_async_tx_descriptor *in_desc; + union starfive_sm_alg_cr alg_cr; + int ret = 0; + + alg_cr.v = 0; + alg_cr.start = 1; + alg_cr.sm3_dma_en = 1; + writel(alg_cr.v, cryp->base + STARFIVE_SM_ALG_CR_OFFSET); + + writel(sg_dma_len(sg), cryp->base + STARFIVE_SM_DMA_IN_LEN_OFFSET); + sg_dma_len(sg) = ALIGN(sg_dma_len(sg), sizeof(u32)); + + in_desc = dmaengine_prep_slave_sg(cryp->tx, sg, 1, DMA_MEM_TO_DEV, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!in_desc) { + ret = -EINVAL; + goto end; + } + + reinit_completion(&cryp->dma_done); + in_desc->callback = starfive_sm3_dma_callback; + in_desc->callback_param = cryp; + + dmaengine_submit(in_desc); + dma_async_issue_pending(cryp->tx); + + if (!wait_for_completion_timeout(&cryp->dma_done, + msecs_to_jiffies(1000))) + ret = -ETIMEDOUT; + +end: + alg_cr.v = 0; + alg_cr.clear = 1; + writel(alg_cr.v, cryp->base + STARFIVE_SM_ALG_CR_OFFSET); + + return ret; +} + +static int starfive_sm3_copy_hash(struct ahash_request *req) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); + int count, *data; + int mlen; + + if (!req->result) + return 0; + + mlen = rctx->digsize / sizeof(u32); + data = (u32 *)req->result; + + for (count = 0; count < mlen; count++) + data[count] = readl(ctx->cryp->base + STARFIVE_SM3_RDR); + + return 0; +} + +void starfive_sm3_done_task(unsigned long param) +{ + struct starfive_cryp_dev *cryp = (struct starfive_cryp_dev *)param; + int err; + + err = starfive_sm3_copy_hash(cryp->req.hreq); + + /* Reset to clear hash_done in irq register*/ + writel(STARFIVE_SM3_RESET, cryp->base + STARFIVE_SM3_CSR); + + crypto_finalize_hash_request(cryp->engine, cryp->req.hreq, err); +} + +static int starfive_sm3_one_request(struct crypto_engine *engine, void *areq) +{ + struct ahash_request *req = + container_of(areq, struct ahash_request, base); + struct starfive_cryp_ctx *ctx = + crypto_ahash_ctx(crypto_ahash_reqtfm(req)); + struct starfive_cryp_dev *cryp = ctx->cryp; + struct starfive_cryp_request_ctx *rctx = ctx->rctx; + struct scatterlist *tsg; + int ret, src_nents, i; + + rctx->csr.sm3.v = 0; + rctx->csr.sm3.reset = 1; + + writel(rctx->csr.sm3.v, cryp->base + STARFIVE_SM3_CSR); + + if (starfive_sm3_wait_busy(ctx)) + return dev_err_probe(cryp->dev, -ETIMEDOUT, + "Error resetting engine.\n"); + + rctx->csr.sm3.v = 0; + rctx->csr.sm3.mode = ctx->hash_mode; + + if (ctx->is_hmac) { + ret = starfive_sm3_hmac_key(ctx); + if (ret) + return ret; + } else { + rctx->csr.sm3.start = 1; + rctx->csr.sm3.firstb = 1; + writel(rctx->csr.sm3.v, cryp->base + STARFIVE_SM3_CSR); + } + + /* No input message, get digest and end. */ + if (!rctx->total) + goto hash_start; + + starfive_sm3_dma_init(cryp); + + for_each_sg(rctx->in_sg, tsg, rctx->in_sg_len, i) { + src_nents = dma_map_sg(cryp->dev, tsg, 1, DMA_TO_DEVICE); + if (src_nents == 0) + return dev_err_probe(cryp->dev, -ENOMEM, + "dma_map_sg error\n"); + + ret = starfive_sm3_dma_xfer(cryp, tsg); + dma_unmap_sg(cryp->dev, tsg, 1, DMA_TO_DEVICE); + if (ret) + return ret; + } + +hash_start: + starfive_sm3_start(cryp); + + return 0; +} + +static void starfive_sm3_set_ahash(struct ahash_request *req, + struct starfive_cryp_ctx *ctx, + struct starfive_cryp_request_ctx *rctx) +{ + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP, + req->base.complete, req->base.data); + ahash_request_set_crypt(&rctx->ahash_fbk_req, req->src, + req->result, req->nbytes); +} + +static int starfive_sm3_init(struct ahash_request *req) +{ + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + starfive_sm3_set_ahash(req, ctx, rctx); + + return crypto_ahash_init(&rctx->ahash_fbk_req); +} + +static int starfive_sm3_update(struct ahash_request *req) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + starfive_sm3_set_ahash(req, ctx, rctx); + + return crypto_ahash_update(&rctx->ahash_fbk_req); +} + +static int starfive_sm3_final(struct ahash_request *req) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + starfive_sm3_set_ahash(req, ctx, rctx); + + return crypto_ahash_final(&rctx->ahash_fbk_req); +} + +static int starfive_sm3_finup(struct ahash_request *req) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + starfive_sm3_set_ahash(req, ctx, rctx); + + return crypto_ahash_finup(&rctx->ahash_fbk_req); +} + +static int starfive_sm3_digest(struct ahash_request *req) +{ + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct starfive_cryp_dev *cryp = ctx->cryp; + + memset(rctx, 0, sizeof(struct starfive_cryp_request_ctx)); + + cryp->req.hreq = req; + rctx->total = req->nbytes; + rctx->in_sg = req->src; + rctx->blksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); + rctx->digsize = crypto_ahash_digestsize(tfm); + rctx->in_sg_len = sg_nents_for_len(rctx->in_sg, rctx->total); + ctx->rctx = rctx; + + return crypto_transfer_hash_request_to_engine(cryp->engine, req); +} + +static int starfive_sm3_export(struct ahash_request *req, void *out) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP, + req->base.complete, req->base.data); + + return crypto_ahash_export(&rctx->ahash_fbk_req, out); +} + +static int starfive_sm3_import(struct ahash_request *req, const void *in) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP, + req->base.complete, req->base.data); + + return crypto_ahash_import(&rctx->ahash_fbk_req, in); +} + +static int starfive_sm3_init_algo(struct crypto_ahash *hash, + const char *alg_name, + bool is_hmac) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + + ctx->cryp = starfive_cryp_find_dev(ctx); + if (!ctx->cryp) + return -ENODEV; + + ctx->ahash_fbk = crypto_alloc_ahash(alg_name, 0, + CRYPTO_ALG_NEED_FALLBACK); + + if (IS_ERR(ctx->ahash_fbk)) + return dev_err_probe(ctx->cryp->dev, PTR_ERR(ctx->ahash_fbk), + "starfive-sm3: Could not load fallback driver.\n"); + + crypto_ahash_set_statesize(hash, crypto_ahash_statesize(ctx->ahash_fbk)); + crypto_ahash_set_reqsize(hash, sizeof(struct starfive_cryp_request_ctx) + + crypto_ahash_reqsize(ctx->ahash_fbk)); + + ctx->keylen = 0; + ctx->hash_mode = STARFIVE_SM3_MODE; + ctx->is_hmac = is_hmac; + + return 0; +} + +static void starfive_sm3_exit_tfm(struct crypto_ahash *hash) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + + crypto_free_ahash(ctx->ahash_fbk); +} + +static int starfive_sm3_long_setkey(struct starfive_cryp_ctx *ctx, + const u8 *key, unsigned int keylen) +{ + struct crypto_wait wait; + struct ahash_request *req; + struct scatterlist sg; + struct crypto_ahash *ahash_tfm; + struct starfive_cryp_dev *cryp = ctx->cryp; + u8 *buf; + int ret; + + ahash_tfm = crypto_alloc_ahash("sm3-starfive", 0, 0); + if (IS_ERR(ahash_tfm)) + return PTR_ERR(ahash_tfm); + + req = ahash_request_alloc(ahash_tfm, GFP_KERNEL); + if (!req) { + ret = -ENOMEM; + goto err_free_ahash; + } + + crypto_init_wait(&wait); + ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, + crypto_req_done, &wait); + crypto_ahash_clear_flags(ahash_tfm, ~0); + + buf = devm_kzalloc(cryp->dev, keylen + STARFIVE_SM3_BUFLEN, GFP_KERNEL); + if (!buf) { + ret = -ENOMEM; + goto err_free_req; + } + + memcpy(buf, key, keylen); + sg_init_one(&sg, buf, keylen); + ahash_request_set_crypt(req, &sg, ctx->key, keylen); + + ret = crypto_wait_req(crypto_ahash_digest(req), &wait); + +err_free_req: + ahash_request_free(req); +err_free_ahash: + crypto_free_ahash(ahash_tfm); + return ret; +} + +static int starfive_sm3_setkey(struct crypto_ahash *hash, + const u8 *key, unsigned int keylen) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + unsigned int digestsize = crypto_ahash_digestsize(hash); + unsigned int blocksize = crypto_ahash_blocksize(hash); + + crypto_ahash_setkey(ctx->ahash_fbk, key, keylen); + + if (keylen <= blocksize) { + memcpy(ctx->key, key, keylen); + ctx->keylen = keylen; + return 0; + } + + ctx->keylen = digestsize; + + return starfive_sm3_long_setkey(ctx, key, keylen); +} + +static int starfive_sm3_init_tfm(struct crypto_ahash *hash) +{ + return starfive_sm3_init_algo(hash, "sm3-generic", 0); +} + +static int starfive_hmac_sm3_init_tfm(struct crypto_ahash *hash) +{ + return starfive_sm3_init_algo(hash, "hmac(sm3-generic)", 1); +} + +static struct ahash_engine_alg algs_sm3[] = { +{ + .base.init = starfive_sm3_init, + .base.update = starfive_sm3_update, + .base.final = starfive_sm3_final, + .base.finup = starfive_sm3_finup, + .base.digest = starfive_sm3_digest, + .base.export = starfive_sm3_export, + .base.import = starfive_sm3_import, + .base.init_tfm = starfive_sm3_init_tfm, + .base.exit_tfm = starfive_sm3_exit_tfm, + .base.halg = { + .digestsize = SM3_DIGEST_SIZE, + .statesize = sizeof(struct sm3_state), + .base = { + .cra_name = "sm3", + .cra_driver_name = "sm3-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SM3_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_module = THIS_MODULE, + } + }, + .op = { + .do_one_request = starfive_sm3_one_request, + }, +}, { + .base.init = starfive_sm3_init, + .base.update = starfive_sm3_update, + .base.final = starfive_sm3_final, + .base.finup = starfive_sm3_finup, + .base.digest = starfive_sm3_digest, + .base.export = starfive_sm3_export, + .base.import = starfive_sm3_import, + .base.init_tfm = starfive_hmac_sm3_init_tfm, + .base.exit_tfm = starfive_sm3_exit_tfm, + .base.setkey = starfive_sm3_setkey, + .base.halg = { + .digestsize = SM3_DIGEST_SIZE, + .statesize = sizeof(struct sm3_state), + .base = { + .cra_name = "hmac(sm3)", + .cra_driver_name = "sm3-hmac-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SM3_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_module = THIS_MODULE, + } + }, + .op = { + .do_one_request = starfive_sm3_one_request, + }, +}, +}; + +int starfive_sm3_register_algs(void) +{ + return crypto_engine_register_ahashes(algs_sm3, ARRAY_SIZE(algs_sm3)); +} + +void starfive_sm3_unregister_algs(void) +{ + crypto_engine_unregister_ahashes(algs_sm3, ARRAY_SIZE(algs_sm3)); +} -- 2.34.1