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[90.63.244.31]) by smtp.googlemail.com with ESMTPSA id n16-20020a05600c3b9000b00394699f803dsm10552348wms.46.2022.05.08.12.00.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 08 May 2022 12:00:39 -0700 (PDT) From: Corentin Labbe To: heiko@sntech.de, ardb@kernel.org, herbert@gondor.apana.org.au, krzysztof.kozlowski+dt@linaro.org, robh+dt@kernel.org Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Corentin Labbe Subject: [PATCH v7 33/33] crypto: rockchip: Add support for RK3399 Date: Sun, 8 May 2022 18:59:57 +0000 Message-Id: <20220508185957.3629088-34-clabbe@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220508185957.3629088-1-clabbe@baylibre.com> References: <20220508185957.3629088-1-clabbe@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220508_200040_964821_A72A0959 X-CRM114-Status: GOOD ( 28.66 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The RK3399 has 2 rk3288 compatible crypto device named crypto0 and crypto1. The only difference is lack of RSA in crypto1. We need to add driver support for 2 parallel instance as only one need to register crypto algorithms. Then the driver will round robin each request on each device. For avoiding complexity (device bringup after a TFM is created), PM is modified to be handled per request. Signed-off-by: Corentin Labbe --- drivers/crypto/rockchip/rk3288_crypto.c | 92 +++++++++++++++---- drivers/crypto/rockchip/rk3288_crypto.h | 25 +++-- drivers/crypto/rockchip/rk3288_crypto_ahash.c | 37 ++++---- .../crypto/rockchip/rk3288_crypto_skcipher.c | 37 ++++---- 4 files changed, 123 insertions(+), 68 deletions(-) diff --git a/drivers/crypto/rockchip/rk3288_crypto.c b/drivers/crypto/rockchip/rk3288_crypto.c index 9ba9b9e433c4..baf015f6707b 100644 --- a/drivers/crypto/rockchip/rk3288_crypto.c +++ b/drivers/crypto/rockchip/rk3288_crypto.c @@ -19,6 +19,23 @@ #include #include +static struct rockchip_ip rocklist = { + .dev_list = LIST_HEAD_INIT(rocklist.dev_list), + .lock = __SPIN_LOCK_UNLOCKED(rocklist.lock), +}; + +struct rk_crypto_info *get_rk_crypto(void) +{ + struct rk_crypto_info *first; + + spin_lock(&rocklist.lock); + first = list_first_entry_or_null(&rocklist.dev_list, + struct rk_crypto_info, list); + list_rotate_left(&rocklist.dev_list); + spin_unlock(&rocklist.lock); + return first; +} + static const struct rk_variant rk3288_variant = { .num_clks = 4, .rkclks = { @@ -30,6 +47,10 @@ static const struct rk_variant rk3328_variant = { .num_clks = 3, }; +static const struct rk_variant rk3399_variant = { + .num_clks = 3, +}; + static int rk_crypto_get_clks(struct rk_crypto_info *dev) { int i, j, err; @@ -83,8 +104,8 @@ static void rk_crypto_disable_clk(struct rk_crypto_info *dev) } /* - * Power management strategy: The device is suspended unless a TFM exists for - * one of the algorithms proposed by this driver. + * Power management strategy: The device is suspended until a request + * is handled. For avoiding suspend/resume yoyo, the autosuspend is set to 2s. */ static int rk_crypto_pm_suspend(struct device *dev) { @@ -161,8 +182,17 @@ static struct rk_crypto_tmp *rk_cipher_algs[] = { #ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG static int rk_crypto_debugfs_show(struct seq_file *seq, void *v) { + struct rk_crypto_info *dd; unsigned int i; + spin_lock(&rocklist.lock); + list_for_each_entry(dd, &rocklist.dev_list, list) { + seq_printf(seq, "%s %s requests: %lu\n", + dev_driver_string(dd->dev), dev_name(dd->dev), + dd->nreq); + } + spin_unlock(&rocklist.lock); + for (i = 0; i < ARRAY_SIZE(rk_cipher_algs); i++) { if (!rk_cipher_algs[i]->dev) continue; @@ -193,6 +223,18 @@ static int rk_crypto_debugfs_show(struct seq_file *seq, void *v) DEFINE_SHOW_ATTRIBUTE(rk_crypto_debugfs); #endif +static void register_debugfs(struct rk_crypto_info *crypto_info) +{ +#ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG + /* Ignore error of debugfs */ + rocklist.dbgfs_dir = debugfs_create_dir("rk3288_crypto", NULL); + rocklist.dbgfs_stats = debugfs_create_file("stats", 0444, + rocklist.dbgfs_dir, + &rocklist, + &rk_crypto_debugfs_fops); +#endif +} + static int rk_crypto_register(struct rk_crypto_info *crypto_info) { unsigned int i, k; @@ -250,6 +292,9 @@ static const struct of_device_id crypto_of_id_table[] = { { .compatible = "rockchip,rk3328-crypto", .data = &rk3328_variant, }, + { .compatible = "rockchip,rk3399-crypto", + .data = &rk3399_variant, + }, {} }; MODULE_DEVICE_TABLE(of, crypto_of_id_table); @@ -257,7 +302,7 @@ MODULE_DEVICE_TABLE(of, crypto_of_id_table); static int rk_crypto_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct rk_crypto_info *crypto_info; + struct rk_crypto_info *crypto_info, *first; int err = 0; crypto_info = devm_kzalloc(&pdev->dev, @@ -316,22 +361,22 @@ static int rk_crypto_probe(struct platform_device *pdev) if (err) goto err_pm; - err = rk_crypto_register(crypto_info); - if (err) { - dev_err(dev, "err in register alg"); - goto err_register_alg; - } + spin_lock(&rocklist.lock); + first = list_first_entry_or_null(&rocklist.dev_list, + struct rk_crypto_info, list); + list_add_tail(&crypto_info->list, &rocklist.dev_list); + spin_unlock(&rocklist.lock); + + if (!first) { + err = rk_crypto_register(crypto_info); + if (err) { + dev_err(dev, "Fail to register crypto algorithms"); + goto err_register_alg; + } -#ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG - /* Ignore error of debugfs */ - crypto_info->dbgfs_dir = debugfs_create_dir("rk3288_crypto", NULL); - crypto_info->dbgfs_stats = debugfs_create_file("stats", 0444, - crypto_info->dbgfs_dir, - crypto_info, - &rk_crypto_debugfs_fops); -#endif + register_debugfs(crypto_info); + } - dev_info(dev, "Crypto Accelerator successfully registered\n"); return 0; err_register_alg: @@ -346,11 +391,20 @@ static int rk_crypto_probe(struct platform_device *pdev) static int rk_crypto_remove(struct platform_device *pdev) { struct rk_crypto_info *crypto_tmp = platform_get_drvdata(pdev); + struct rk_crypto_info *first; + + spin_lock_bh(&rocklist.lock); + list_del(&crypto_tmp->list); + first = list_first_entry_or_null(&rocklist.dev_list, + struct rk_crypto_info, list); + spin_unlock_bh(&rocklist.lock); + if (!first) { #ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG - debugfs_remove_recursive(crypto_tmp->dbgfs_dir); + debugfs_remove_recursive(rocklist.dbgfs_dir); #endif - rk_crypto_unregister(); + rk_crypto_unregister(); + } rk_crypto_pm_exit(crypto_tmp); crypto_engine_exit(crypto_tmp->engine); return 0; diff --git a/drivers/crypto/rockchip/rk3288_crypto.h b/drivers/crypto/rockchip/rk3288_crypto.h index ac979d67ced9..b2695258cade 100644 --- a/drivers/crypto/rockchip/rk3288_crypto.h +++ b/drivers/crypto/rockchip/rk3288_crypto.h @@ -190,6 +190,20 @@ #define RK_MAX_CLKS 4 +/* + * struct rockchip_ip - struct for managing a list of RK crypto instance + * @dev_list: Used for doing a list of rk_crypto_info + * @lock: Control access to dev_list + * @dbgfs_dir: Debugfs dentry for statistic directory + * @dbgfs_stats: Debugfs dentry for statistic counters + */ +struct rockchip_ip { + struct list_head dev_list; + spinlock_t lock; /* Control access to dev_list */ + struct dentry *dbgfs_dir; + struct dentry *dbgfs_stats; +}; + struct rk_clks { const char *name; unsigned long max; @@ -201,6 +215,7 @@ struct rk_variant { }; struct rk_crypto_info { + struct list_head list; struct device *dev; struct clk_bulk_data *clks; int num_clks; @@ -208,19 +223,15 @@ struct rk_crypto_info { void __iomem *reg; int irq; const struct rk_variant *variant; + unsigned long nreq; struct crypto_engine *engine; struct completion complete; int status; -#ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG - struct dentry *dbgfs_dir; - struct dentry *dbgfs_stats; -#endif }; /* the private variable of hash */ struct rk_ahash_ctx { struct crypto_engine_ctx enginectx; - struct rk_crypto_info *dev; /* for fallback */ struct crypto_ahash *fallback_tfm; }; @@ -236,7 +247,6 @@ struct rk_ahash_rctx { /* the private variable of cipher */ struct rk_cipher_ctx { struct crypto_engine_ctx enginectx; - struct rk_crypto_info *dev; unsigned int keylen; u8 key[AES_MAX_KEY_SIZE]; u8 iv[AES_BLOCK_SIZE]; @@ -252,7 +262,7 @@ struct rk_cipher_rctx { struct rk_crypto_tmp { u32 type; - struct rk_crypto_info *dev; + struct rk_crypto_info *dev; union { struct skcipher_alg skcipher; struct ahash_alg hash; @@ -276,4 +286,5 @@ extern struct rk_crypto_tmp rk_ahash_sha1; extern struct rk_crypto_tmp rk_ahash_sha256; extern struct rk_crypto_tmp rk_ahash_md5; +struct rk_crypto_info *get_rk_crypto(void); #endif diff --git a/drivers/crypto/rockchip/rk3288_crypto_ahash.c b/drivers/crypto/rockchip/rk3288_crypto_ahash.c index 30f78256c955..a78ff3dcd0b1 100644 --- a/drivers/crypto/rockchip/rk3288_crypto_ahash.c +++ b/drivers/crypto/rockchip/rk3288_crypto_ahash.c @@ -199,8 +199,8 @@ static int rk_ahash_export(struct ahash_request *req, void *out) static int rk_ahash_digest(struct ahash_request *req) { struct rk_ahash_rctx *rctx = ahash_request_ctx(req); - struct rk_ahash_ctx *tctx = crypto_tfm_ctx(req->base.tfm); - struct rk_crypto_info *dev = tctx->dev; + struct rk_crypto_info *dev; + struct crypto_engine *engine; if (rk_ahash_need_fallback(req)) return rk_ahash_digest_fb(req); @@ -208,9 +208,12 @@ static int rk_ahash_digest(struct ahash_request *req) if (!req->nbytes) return zero_message_process(req); + dev = get_rk_crypto(); + rctx->dev = dev; + engine = dev->engine; - return crypto_transfer_hash_request_to_engine(dev->engine, req); + return crypto_transfer_hash_request_to_engine(engine, req); } static void crypto_ahash_dma_start(struct rk_crypto_info *dev, struct scatterlist *sg) @@ -260,9 +263,14 @@ static int rk_hash_run(struct crypto_engine *engine, void *breq) int i; u32 v; + err = pm_runtime_resume_and_get(rkc->dev); + if (err) + return err; + rctx->mode = 0; algt->stat_req++; + rkc->nreq++; switch (crypto_ahash_digestsize(tfm)) { case SHA1_DIGEST_SIZE: @@ -313,6 +321,8 @@ static int rk_hash_run(struct crypto_engine *engine, void *breq) } theend: + pm_runtime_put_autosuspend(rkc->dev); + local_bh_disable(); crypto_finalize_hash_request(engine, breq, err); local_bh_enable(); @@ -323,21 +333,15 @@ static int rk_hash_run(struct crypto_engine *engine, void *breq) static int rk_cra_hash_init(struct crypto_tfm *tfm) { struct rk_ahash_ctx *tctx = crypto_tfm_ctx(tfm); - struct rk_crypto_tmp *algt; - struct ahash_alg *alg = __crypto_ahash_alg(tfm->__crt_alg); - const char *alg_name = crypto_tfm_alg_name(tfm); - int err; - - algt = container_of(alg, struct rk_crypto_tmp, alg.hash); - - tctx->dev = algt->dev; + struct ahash_alg *alg = __crypto_ahash_alg(tfm->__crt_alg); + struct rk_crypto_tmp *algt = container_of(alg, struct rk_crypto_tmp, alg.hash); /* for fallback */ tctx->fallback_tfm = crypto_alloc_ahash(alg_name, 0, CRYPTO_ALG_NEED_FALLBACK); if (IS_ERR(tctx->fallback_tfm)) { - dev_err(tctx->dev->dev, "Could not load fallback driver.\n"); + dev_err(algt->dev->dev, "Could not load fallback driver.\n"); return PTR_ERR(tctx->fallback_tfm); } @@ -349,15 +353,7 @@ static int rk_cra_hash_init(struct crypto_tfm *tfm) tctx->enginectx.op.prepare_request = rk_hash_prepare; tctx->enginectx.op.unprepare_request = rk_hash_unprepare; - err = pm_runtime_resume_and_get(tctx->dev->dev); - if (err < 0) - goto error_pm; - return 0; -error_pm: - crypto_free_ahash(tctx->fallback_tfm); - - return err; } static void rk_cra_hash_exit(struct crypto_tfm *tfm) @@ -365,7 +361,6 @@ static void rk_cra_hash_exit(struct crypto_tfm *tfm) struct rk_ahash_ctx *tctx = crypto_tfm_ctx(tfm); crypto_free_ahash(tctx->fallback_tfm); - pm_runtime_put_autosuspend(tctx->dev->dev); } struct rk_crypto_tmp rk_ahash_sha1 = { diff --git a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c index 0b1c90ababb7..59069457582b 100644 --- a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c +++ b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c @@ -17,11 +17,11 @@ static int rk_cipher_need_fallback(struct skcipher_request *req) { struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); - unsigned int bs = crypto_skcipher_blocksize(tfm); struct skcipher_alg *alg = crypto_skcipher_alg(tfm); struct rk_crypto_tmp *algt = container_of(alg, struct rk_crypto_tmp, alg.skcipher); struct scatterlist *sgs, *sgd; unsigned int stodo, dtodo, len; + unsigned int bs = crypto_skcipher_blocksize(tfm); if (!req->cryptlen) return true; @@ -84,15 +84,16 @@ static int rk_cipher_fallback(struct skcipher_request *areq) static int rk_cipher_handle_req(struct skcipher_request *req) { - struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); - struct rk_cipher_ctx *tctx = crypto_skcipher_ctx(tfm); struct rk_cipher_rctx *rctx = skcipher_request_ctx(req); - struct rk_crypto_info *rkc = tctx->dev; - struct crypto_engine *engine = rkc->engine; + struct rk_crypto_info *rkc; + struct crypto_engine *engine; if (rk_cipher_need_fallback(req)) return rk_cipher_fallback(req); + rkc = get_rk_crypto(); + + engine = rkc->engine; rctx->dev = rkc; return crypto_transfer_skcipher_request_to_engine(engine, req); @@ -307,7 +308,12 @@ static int rk_cipher_run(struct crypto_engine *engine, void *async_req) struct rk_crypto_tmp *algt = container_of(alg, struct rk_crypto_tmp, alg.skcipher); struct rk_crypto_info *rkc = rctx->dev; + err = pm_runtime_resume_and_get(rkc->dev); + if (err) + return err; + algt->stat_req++; + rkc->nreq++; ivsize = crypto_skcipher_ivsize(tfm); if (areq->iv && crypto_skcipher_ivsize(tfm) > 0) { @@ -401,6 +407,8 @@ static int rk_cipher_run(struct crypto_engine *engine, void *async_req) } theend: + pm_runtime_put_autosuspend(rkc->dev); + local_bh_disable(); crypto_finalize_skcipher_request(engine, areq, err); local_bh_enable(); @@ -420,18 +428,13 @@ static int rk_cipher_run(struct crypto_engine *engine, void *async_req) static int rk_cipher_tfm_init(struct crypto_skcipher *tfm) { struct rk_cipher_ctx *ctx = crypto_skcipher_ctx(tfm); - struct skcipher_alg *alg = crypto_skcipher_alg(tfm); const char *name = crypto_tfm_alg_name(&tfm->base); - struct rk_crypto_tmp *algt; - int err; - - algt = container_of(alg, struct rk_crypto_tmp, alg.skcipher); - - ctx->dev = algt->dev; + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct rk_crypto_tmp *algt = container_of(alg, struct rk_crypto_tmp, alg.skcipher); ctx->fallback_tfm = crypto_alloc_skcipher(name, 0, CRYPTO_ALG_NEED_FALLBACK); if (IS_ERR(ctx->fallback_tfm)) { - dev_err(ctx->dev->dev, "ERROR: Cannot allocate fallback for %s %ld\n", + dev_err(algt->dev->dev, "ERROR: Cannot allocate fallback for %s %ld\n", name, PTR_ERR(ctx->fallback_tfm)); return PTR_ERR(ctx->fallback_tfm); } @@ -441,14 +444,7 @@ static int rk_cipher_tfm_init(struct crypto_skcipher *tfm) ctx->enginectx.op.do_one_request = rk_cipher_run; - err = pm_runtime_resume_and_get(ctx->dev->dev); - if (err < 0) - goto error_pm; - return 0; -error_pm: - crypto_free_skcipher(ctx->fallback_tfm); - return err; } static void rk_cipher_tfm_exit(struct crypto_skcipher *tfm) @@ -457,7 +453,6 @@ static void rk_cipher_tfm_exit(struct crypto_skcipher *tfm) memzero_explicit(ctx->key, ctx->keylen); crypto_free_skcipher(ctx->fallback_tfm); - pm_runtime_put_autosuspend(ctx->dev->dev); } struct rk_crypto_tmp rk_ecb_aes_alg = {