diff options
-rw-r--r-- | arch/x86/crypto/aesni-intel_glue.c | 24 | ||||
-rw-r--r-- | crypto/ablkcipher.c | 3 | ||||
-rw-r--r-- | crypto/tcrypt.c | 3 | ||||
-rw-r--r-- | crypto/testmgr.c | 2 | ||||
-rw-r--r-- | crypto/testmgr.h | 30 | ||||
-rw-r--r-- | drivers/char/hw_random/Kconfig | 12 | ||||
-rw-r--r-- | drivers/char/hw_random/Makefile | 1 | ||||
-rw-r--r-- | drivers/char/hw_random/omap-rng.c | 14 | ||||
-rw-r--r-- | drivers/char/hw_random/picoxcell-rng.c | 208 | ||||
-rw-r--r-- | drivers/char/random.c | 13 | ||||
-rw-r--r-- | drivers/crypto/Kconfig | 17 | ||||
-rw-r--r-- | drivers/crypto/Makefile | 2 | ||||
-rw-r--r-- | drivers/crypto/omap-aes.c | 4 | ||||
-rw-r--r-- | drivers/crypto/omap-sham.c | 4 | ||||
-rw-r--r-- | drivers/crypto/picoxcell_crypto.c | 1867 | ||||
-rw-r--r-- | drivers/crypto/picoxcell_crypto_regs.h | 128 |
16 files changed, 2299 insertions, 33 deletions
diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c index e1e60c7..e0e6340 100644 --- a/arch/x86/crypto/aesni-intel_glue.c +++ b/arch/x86/crypto/aesni-intel_glue.c @@ -873,22 +873,18 @@ rfc4106_set_hash_subkey(u8 *hash_subkey, const u8 *key, unsigned int key_len) crypto_ablkcipher_clear_flags(ctr_tfm, ~0); ret = crypto_ablkcipher_setkey(ctr_tfm, key, key_len); - if (ret) { - crypto_free_ablkcipher(ctr_tfm); - return ret; - } + if (ret) + goto out_free_ablkcipher; + ret = -ENOMEM; req = ablkcipher_request_alloc(ctr_tfm, GFP_KERNEL); - if (!req) { - crypto_free_ablkcipher(ctr_tfm); - return -EINVAL; - } + if (!req) + goto out_free_ablkcipher; req_data = kmalloc(sizeof(*req_data), GFP_KERNEL); - if (!req_data) { - crypto_free_ablkcipher(ctr_tfm); - return -ENOMEM; - } + if (!req_data) + goto out_free_request; + memset(req_data->iv, 0, sizeof(req_data->iv)); /* Clear the data in the hash sub key container to zero.*/ @@ -913,8 +909,10 @@ rfc4106_set_hash_subkey(u8 *hash_subkey, const u8 *key, unsigned int key_len) if (!ret) ret = req_data->result.err; } - ablkcipher_request_free(req); kfree(req_data); +out_free_request: + ablkcipher_request_free(req); +out_free_ablkcipher: crypto_free_ablkcipher(ctr_tfm); return ret; } diff --git a/crypto/ablkcipher.c b/crypto/ablkcipher.c index a854df2..fdc67d3 100644 --- a/crypto/ablkcipher.c +++ b/crypto/ablkcipher.c @@ -141,8 +141,7 @@ err: if (walk->iv != req->info) memcpy(req->info, walk->iv, tfm->crt_ablkcipher.ivsize); - if (walk->iv_buffer) - kfree(walk->iv_buffer); + kfree(walk->iv_buffer); return err; } diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c index 9aac5e5..e912ea5 100644 --- a/crypto/tcrypt.c +++ b/crypto/tcrypt.c @@ -146,7 +146,8 @@ static void test_cipher_speed(const char *algo, int enc, unsigned int sec, unsigned int tcount, u8 *keysize) { unsigned int ret, i, j, iv_len; - const char *key, iv[128]; + const char *key; + char iv[128]; struct crypto_blkcipher *tfm; struct blkcipher_desc desc; const char *e; diff --git a/crypto/testmgr.c b/crypto/testmgr.c index 27ea9fe..2854865 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -2077,6 +2077,7 @@ static const struct alg_test_desc alg_test_descs[] = { }, { .alg = "ghash", .test = alg_test_hash, + .fips_allowed = 1, .suite = { .hash = { .vecs = ghash_tv_template, @@ -2453,6 +2454,7 @@ static const struct alg_test_desc alg_test_descs[] = { }, { .alg = "xts(aes)", .test = alg_test_skcipher, + .fips_allowed = 1, .suite = { .cipher = { .enc = { diff --git a/crypto/testmgr.h b/crypto/testmgr.h index 834af7f..aa6dac0 100644 --- a/crypto/testmgr.h +++ b/crypto/testmgr.h @@ -451,8 +451,9 @@ static struct hash_testvec rmd320_tv_template[] = { /* * SHA1 test vectors from from FIPS PUB 180-1 + * Long vector from CAVS 5.0 */ -#define SHA1_TEST_VECTORS 2 +#define SHA1_TEST_VECTORS 3 static struct hash_testvec sha1_tv_template[] = { { @@ -467,6 +468,33 @@ static struct hash_testvec sha1_tv_template[] = { "\x4a\xa1\xf9\x51\x29\xe5\xe5\x46\x70\xf1", .np = 2, .tap = { 28, 28 } + }, { + .plaintext = "\xec\x29\x56\x12\x44\xed\xe7\x06" + "\xb6\xeb\x30\xa1\xc3\x71\xd7\x44" + "\x50\xa1\x05\xc3\xf9\x73\x5f\x7f" + "\xa9\xfe\x38\xcf\x67\xf3\x04\xa5" + "\x73\x6a\x10\x6e\x92\xe1\x71\x39" + "\xa6\x81\x3b\x1c\x81\xa4\xf3\xd3" + "\xfb\x95\x46\xab\x42\x96\xfa\x9f" + "\x72\x28\x26\xc0\x66\x86\x9e\xda" + "\xcd\x73\xb2\x54\x80\x35\x18\x58" + "\x13\xe2\x26\x34\xa9\xda\x44\x00" + "\x0d\x95\xa2\x81\xff\x9f\x26\x4e" + "\xcc\xe0\xa9\x31\x22\x21\x62\xd0" + "\x21\xcc\xa2\x8d\xb5\xf3\xc2\xaa" + "\x24\x94\x5a\xb1\xe3\x1c\xb4\x13" + "\xae\x29\x81\x0f\xd7\x94\xca\xd5" + "\xdf\xaf\x29\xec\x43\xcb\x38\xd1" + "\x98\xfe\x4a\xe1\xda\x23\x59\x78" + "\x02\x21\x40\x5b\xd6\x71\x2a\x53" + "\x05\xda\x4b\x1b\x73\x7f\xce\x7c" + "\xd2\x1c\x0e\xb7\x72\x8d\x08\x23" + "\x5a\x90\x11", + .psize = 163, + .digest = "\x97\x01\x11\xc4\xe7\x7b\xcc\x88\xcc\x20" + "\x45\x9c\x02\xb6\x9b\x4a\xa8\xf5\x82\x17", + .np = 4, + .tap = { 63, 64, 31, 5 } } }; diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index d31483c..beecd1c 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -198,3 +198,15 @@ config HW_RANDOM_NOMADIK module will be called nomadik-rng. If unsure, say Y. + +config HW_RANDOM_PICOXCELL + tristate "Picochip picoXcell true random number generator support" + depends on HW_RANDOM && ARCH_PICOXCELL && PICOXCELL_PC3X3 + ---help--- + This driver provides kernel-side support for the Random Number + Generator hardware found on Picochip PC3x3 and later devices. + + To compile this driver as a module, choose M here: the + module will be called picoxcell-rng. + + If unsure, say Y. diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile index 4273308..3db4eb8 100644 --- a/drivers/char/hw_random/Makefile +++ b/drivers/char/hw_random/Makefile @@ -19,3 +19,4 @@ obj-$(CONFIG_HW_RANDOM_TX4939) += tx4939-rng.o obj-$(CONFIG_HW_RANDOM_MXC_RNGA) += mxc-rnga.o obj-$(CONFIG_HW_RANDOM_OCTEON) += octeon-rng.o obj-$(CONFIG_HW_RANDOM_NOMADIK) += nomadik-rng.o +obj-$(CONFIG_HW_RANDOM_PICOXCELL) += picoxcell-rng.o diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c index 06aad08..2cc755a 100644 --- a/drivers/char/hw_random/omap-rng.c +++ b/drivers/char/hw_random/omap-rng.c @@ -91,7 +91,7 @@ static struct hwrng omap_rng_ops = { static int __devinit omap_rng_probe(struct platform_device *pdev) { - struct resource *res, *mem; + struct resource *res; int ret; /* @@ -116,14 +116,12 @@ static int __devinit omap_rng_probe(struct platform_device *pdev) if (!res) return -ENOENT; - mem = request_mem_region(res->start, resource_size(res), - pdev->name); - if (mem == NULL) { + if (!request_mem_region(res->start, resource_size(res), pdev->name)) { ret = -EBUSY; goto err_region; } - dev_set_drvdata(&pdev->dev, mem); + dev_set_drvdata(&pdev->dev, res); rng_base = ioremap(res->start, resource_size(res)); if (!rng_base) { ret = -ENOMEM; @@ -146,7 +144,7 @@ err_register: iounmap(rng_base); rng_base = NULL; err_ioremap: - release_resource(mem); + release_mem_region(res->start, resource_size(res)); err_region: if (cpu_is_omap24xx()) { clk_disable(rng_ick); @@ -157,7 +155,7 @@ err_region: static int __exit omap_rng_remove(struct platform_device *pdev) { - struct resource *mem = dev_get_drvdata(&pdev->dev); + struct resource *res = dev_get_drvdata(&pdev->dev); hwrng_unregister(&omap_rng_ops); @@ -170,7 +168,7 @@ static int __exit omap_rng_remove(struct platform_device *pdev) clk_put(rng_ick); } - release_resource(mem); + release_mem_region(res->start, resource_size(res)); rng_base = NULL; return 0; diff --git a/drivers/char/hw_random/picoxcell-rng.c b/drivers/char/hw_random/picoxcell-rng.c new file mode 100644 index 0000000..990d55a --- /dev/null +++ b/drivers/char/hw_random/picoxcell-rng.c @@ -0,0 +1,208 @@ +/* + * Copyright (c) 2010-2011 Picochip Ltd., Jamie Iles + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * All enquiries to support@picochip.com + */ +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/hw_random.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#define DATA_REG_OFFSET 0x0200 +#define CSR_REG_OFFSET 0x0278 +#define CSR_OUT_EMPTY_MASK (1 << 24) +#define CSR_FAULT_MASK (1 << 1) +#define TRNG_BLOCK_RESET_MASK (1 << 0) +#define TAI_REG_OFFSET 0x0380 + +/* + * The maximum amount of time in microseconds to spend waiting for data if the + * core wants us to wait. The TRNG should generate 32 bits every 320ns so a + * timeout of 20us seems reasonable. The TRNG does builtin tests of the data + * for randomness so we can't always assume there is data present. + */ +#define PICO_TRNG_TIMEOUT 20 + +static void __iomem *rng_base; +static struct clk *rng_clk; +struct device *rng_dev; + +static inline u32 picoxcell_trng_read_csr(void) +{ + return __raw_readl(rng_base + CSR_REG_OFFSET); +} + +static inline bool picoxcell_trng_is_empty(void) +{ + return picoxcell_trng_read_csr() & CSR_OUT_EMPTY_MASK; +} + +/* + * Take the random number generator out of reset and make sure the interrupts + * are masked. We shouldn't need to get large amounts of random bytes so just + * poll the status register. The hardware generates 32 bits every 320ns so we + * shouldn't have to wait long enough to warrant waiting for an IRQ. + */ +static void picoxcell_trng_start(void) +{ + __raw_writel(0, rng_base + TAI_REG_OFFSET); + __raw_writel(0, rng_base + CSR_REG_OFFSET); +} + +static void picoxcell_trng_reset(void) +{ + __raw_writel(TRNG_BLOCK_RESET_MASK, rng_base + CSR_REG_OFFSET); + __raw_writel(TRNG_BLOCK_RESET_MASK, rng_base + TAI_REG_OFFSET); + picoxcell_trng_start(); +} + +/* + * Get some random data from the random number generator. The hw_random core + * layer provides us with locking. + */ +static int picoxcell_trng_read(struct hwrng *rng, void *buf, size_t max, + bool wait) +{ + int i; + + /* Wait for some data to become available. */ + for (i = 0; i < PICO_TRNG_TIMEOUT && picoxcell_trng_is_empty(); ++i) { + if (!wait) + return 0; + + udelay(1); + } + + if (picoxcell_trng_read_csr() & CSR_FAULT_MASK) { + dev_err(rng_dev, "fault detected, resetting TRNG\n"); + picoxcell_trng_reset(); + return -EIO; + } + + if (i == PICO_TRNG_TIMEOUT) + return 0; + + *(u32 *)buf = __raw_readl(rng_base + DATA_REG_OFFSET); + return sizeof(u32); +} + +static struct hwrng picoxcell_trng = { + .name = "picoxcell", + .read = picoxcell_trng_read, +}; + +static int picoxcell_trng_probe(struct platform_device *pdev) +{ + int ret; + struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + if (!mem) { + dev_warn(&pdev->dev, "no memory resource\n"); + return -ENOMEM; + } + + if (!devm_request_mem_region(&pdev->dev, mem->start, resource_size(mem), + "picoxcell_trng")) { + dev_warn(&pdev->dev, "unable to request io mem\n"); + return -EBUSY; + } + + rng_base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem)); + if (!rng_base) { + dev_warn(&pdev->dev, "unable to remap io mem\n"); + return -ENOMEM; + } + + rng_clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(rng_clk)) { + dev_warn(&pdev->dev, "no clk\n"); + return PTR_ERR(rng_clk); + } + + ret = clk_enable(rng_clk); + if (ret) { + dev_warn(&pdev->dev, "unable to enable clk\n"); + goto err_enable; + } + + picoxcell_trng_start(); + ret = hwrng_register(&picoxcell_trng); + if (ret) + goto err_register; + + rng_dev = &pdev->dev; + dev_info(&pdev->dev, "pixoxcell random number generator active\n"); + + return 0; + +err_register: + clk_disable(rng_clk); +err_enable: + clk_put(rng_clk); + + return ret; +} + +static int __devexit picoxcell_trng_remove(struct platform_device *pdev) +{ + hwrng_unregister(&picoxcell_trng); + clk_disable(rng_clk); + clk_put(rng_clk); + + return 0; +} + +#ifdef CONFIG_PM +static int picoxcell_trng_suspend(struct device *dev) +{ + clk_disable(rng_clk); + + return 0; +} + +static int picoxcell_trng_resume(struct device *dev) +{ + return clk_enable(rng_clk); +} + +static const struct dev_pm_ops picoxcell_trng_pm_ops = { + .suspend = picoxcell_trng_suspend, + .resume = picoxcell_trng_resume, +}; +#endif /* CONFIG_PM */ + +static struct platform_driver picoxcell_trng_driver = { + .probe = picoxcell_trng_probe, + .remove = __devexit_p(picoxcell_trng_remove), + .driver = { + .name = "picoxcell-trng", + .owner = THIS_MODULE, +#ifdef CONFIG_PM + .pm = &picoxcell_trng_pm_ops, +#endif /* CONFIG_PM */ + }, +}; + +static int __init picoxcell_trng_init(void) +{ + return platform_driver_register(&picoxcell_trng_driver); +} +module_init(picoxcell_trng_init); + +static void __exit picoxcell_trng_exit(void) +{ + platform_driver_unregister(&picoxcell_trng_driver); +} +module_exit(picoxcell_trng_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jamie Iles"); +MODULE_DESCRIPTION("Picochip picoXcell TRNG driver"); diff --git a/drivers/char/random.c b/drivers/char/random.c index 72a4fcb..5e29e80 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -128,6 +128,7 @@ * void add_input_randomness(unsigned int type, unsigned int code, * unsigned int value); * void add_interrupt_randomness(int irq); + * void add_disk_randomness(struct gendisk *disk); * * add_input_randomness() uses the input layer interrupt timing, as well as * the event type information from the hardware. @@ -136,9 +137,15 @@ * inputs to the entropy pool. Note that not all interrupts are good * sources of randomness! For example, the timer interrupts is not a * good choice, because the periodicity of the interrupts is too - * regular, and hence predictable to an attacker. Disk interrupts are - * a better measure, since the timing of the disk interrupts are more - * unpredictable. + * regular, and hence predictable to an attacker. Network Interface + * Controller interrupts are a better measure, since the timing of the + * NIC interrupts are more unpredictable. + * + * add_disk_randomness() uses what amounts to the seek time of block + * layer request events, on a per-disk_devt basis, as input to the + * entropy pool. Note that high-speed solid state drives with very low + * seek times do not make for good sources of entropy, as their seek + * times are usually fairly consistent. * * All of these routines try to estimate how many bits of randomness a * particular randomness source. They do this by keeping track of the diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index eab2cf7..e541852 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -252,4 +252,21 @@ config CRYPTO_DEV_OMAP_AES OMAP processors have AES module accelerator. Select this if you want to use the OMAP module for AES algorithms. +config CRYPTO_DEV_PICOXCELL + tristate "Support for picoXcell IPSEC and Layer2 crypto engines" + depends on ARCH_PICOXCELL + select CRYPTO_AES + select CRYPTO_AUTHENC + select CRYPTO_ALGAPI + select CRYPTO_DES + select CRYPTO_CBC + select CRYPTO_ECB + select CRYPTO_SEQIV + help + This option enables support for the hardware offload engines in the + Picochip picoXcell SoC devices. Select this for IPSEC ESP offload + and for 3gpp Layer 2 ciphering support. + + Saying m here will build a module named pipcoxcell_crypto. + endif # CRYPTO_HW diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile index 2566973..5203e34 100644 --- a/drivers/crypto/Makefile +++ b/drivers/crypto/Makefile @@ -10,4 +10,4 @@ obj-$(CONFIG_CRYPTO_DEV_IXP4XX) += ixp4xx_crypto.o obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += amcc/ obj-$(CONFIG_CRYPTO_DEV_OMAP_SHAM) += omap-sham.o obj-$(CONFIG_CRYPTO_DEV_OMAP_AES) += omap-aes.o - +obj-$(CONFIG_CRYPTO_DEV_PICOXCELL) += picoxcell_crypto.o diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index add2a1a..5b970d9e 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -839,9 +839,9 @@ static int omap_aes_probe(struct platform_device *pdev) /* Initializing the clock */ dd->iclk = clk_get(dev, "ick"); - if (!dd->iclk) { + if (IS_ERR(dd->iclk)) { dev_err(dev, "clock intialization failed.\n"); - err = -ENODEV; + err = PTR_ERR(dd->iclk); goto err_res; } diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index 2e71123..465cde3 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -1206,9 +1206,9 @@ static int __devinit omap_sham_probe(struct platform_device *pdev) /* Initializing the clock */ dd->iclk = clk_get(dev, "ick"); - if (!dd->iclk) { + if (IS_ERR(dd->iclk)) { dev_err(dev, "clock intialization failed.\n"); - err = -ENODEV; + err = PTR_ERR(dd->iclk); goto clk_err; } diff --git a/drivers/crypto/picoxcell_crypto.c b/drivers/crypto/picoxcell_crypto.c new file mode 100644 index 0000000..b092d0a --- /dev/null +++ b/drivers/crypto/picoxcell_crypto.c @@ -0,0 +1,1867 @@ +/* + * Copyright (c) 2010-2011 Picochip Ltd., Jamie Iles + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <crypto/aead.h> +#include <crypto/aes.h> +#include <crypto/algapi.h> +#include <crypto/authenc.h> +#include <crypto/des.h> +#include <crypto/md5.h> +#include <crypto/sha.h> +#include <crypto/internal/skcipher.h> +#include <linux/clk.h> +#include <linux/crypto.h> +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/dmapool.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/rtnetlink.h> +#include <linux/scatterlist.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/timer.h> + +#include "picoxcell_crypto_regs.h" + +/* + * The threshold for the number of entries in the CMD FIFO available before + * the CMD0_CNT interrupt is raised. Increasing this value will reduce the + * number of interrupts raised to the CPU. + */ +#define CMD0_IRQ_THRESHOLD 1 + +/* + * The timeout period (in jiffies) for a PDU. When the the number of PDUs in + * flight is greater than the STAT_IRQ_THRESHOLD or 0 the timer is disabled. + * When there are packets in flight but lower than the threshold, we enable + * the timer and at expiry, attempt to remove any processed packets from the + * queue and if there are still packets left, schedule the timer again. + */ +#define PACKET_TIMEOUT 1 + +/* The priority to register each algorithm with. */ +#define SPACC_CRYPTO_ALG_PRIORITY 10000 + +#define SPACC_CRYPTO_KASUMI_F8_KEY_LEN 16 +#define SPACC_CRYPTO_IPSEC_CIPHER_PG_SZ 64 +#define SPACC_CRYPTO_IPSEC_HASH_PG_SZ 64 +#define SPACC_CRYPTO_IPSEC_MAX_CTXS 32 +#define SPACC_CRYPTO_IPSEC_FIFO_SZ 32 +#define SPACC_CRYPTO_L2_CIPHER_PG_SZ 64 +#define SPACC_CRYPTO_L2_HASH_PG_SZ 64 +#define SPACC_CRYPTO_L2_MAX_CTXS 128 +#define SPACC_CRYPTO_L2_FIFO_SZ 128 + +#define MAX_DDT_LEN 16 + +/* DDT format. This must match the hardware DDT format exactly. */ +struct spacc_ddt { + dma_addr_t p; + u32 len; +}; + +/* + * Asynchronous crypto request structure. + * + * This structure defines a request that is either queued for processing or + * being processed. + */ +struct spacc_req { + struct list_head list; + struct spacc_engine *engine; + struct crypto_async_request *req; + int result; + bool is_encrypt; + unsigned ctx_id; + dma_addr_t src_addr, dst_addr; + struct spacc_ddt *src_ddt, *dst_ddt; + void (*complete)(struct spacc_req *req); + + /* AEAD specific bits. */ + u8 *giv; + size_t giv_len; + dma_addr_t giv_pa; +}; + +struct spacc_engine { + void __iomem *regs; + struct list_head pending; + int next_ctx; + spinlock_t hw_lock; + int in_flight; + struct list_head completed; + struct list_head in_progress; + struct tasklet_struct complete; + unsigned long fifo_sz; + void __iomem *cipher_ctx_base; + void __iomem *hash_key_base; + struct spacc_alg *algs; + unsigned num_algs; + struct list_head registered_algs; + size_t cipher_pg_sz; + size_t hash_pg_sz; + const char *name; + struct clk *clk; + struct device *dev; + unsigned max_ctxs; + struct timer_list packet_timeout; + unsigned stat_irq_thresh; + struct dma_pool *req_pool; +}; + +/* Algorithm type mask. */ +#define SPACC_CRYPTO_ALG_MASK 0x7 + +/* SPACC definition of a crypto algorithm. */ +struct spacc_alg { + unsigned long ctrl_default; + unsigned long type; + struct crypto_alg alg; + struct spacc_engine *engine; + struct list_head entry; + int key_offs; + int iv_offs; +}; + +/* Generic context structure for any algorithm type. */ +struct spacc_generic_ctx { + struct spacc_engine *engine; + int flags; + int key_offs; + int iv_offs; +}; + +/* Block cipher context. */ +struct spacc_ablk_ctx { + struct spacc_generic_ctx generic; + u8 key[AES_MAX_KEY_SIZE]; + u8 key_len; + /* + * The fallback cipher. If the operation can't be done in hardware, + * fallback to a software version. + */ + struct crypto_ablkcipher *sw_cipher; +}; + +/* AEAD cipher context. */ +struct spacc_aead_ctx { + struct spacc_generic_ctx generic; + u8 cipher_key[AES_MAX_KEY_SIZE]; + u8 hash_ctx[SPACC_CRYPTO_IPSEC_HASH_PG_SZ]; + u8 cipher_key_len; + u8 hash_key_len; + struct crypto_aead *sw_cipher; + size_t auth_size; + u8 salt[AES_BLOCK_SIZE]; +}; + +static inline struct spacc_alg *to_spacc_alg(struct crypto_alg *alg) +{ + return alg ? container_of(alg, struct spacc_alg, alg) : NULL; +} + +static inline int spacc_fifo_cmd_full(struct spacc_engine *engine) +{ + u32 fifo_stat = readl(engine->regs + SPA_FIFO_STAT_REG_OFFSET); + + return fifo_stat & SPA_FIFO_CMD_FULL; +} + +/* + * Given a cipher context, and a context number, get the base address of the + * context page. + * + * Returns the address of the context page where the key/context may + * be written. + */ +static inline void __iomem *spacc_ctx_page_addr(struct spacc_generic_ctx *ctx, + unsigned indx, + bool is_cipher_ctx) +{ + return is_cipher_ctx ? ctx->engine->cipher_ctx_base + + (indx * ctx->engine->cipher_pg_sz) : + ctx->engine->hash_key_base + (indx * ctx->engine->hash_pg_sz); +} + +/* The context pages can only be written with 32-bit accesses. */ +static inline void memcpy_toio32(u32 __iomem *dst, const void *src, + unsigned count) +{ + const u32 *src32 = (const u32 *) src; + + while (count--) + writel(*src32++, dst++); +} + +static void spacc_cipher_write_ctx(struct spacc_generic_ctx *ctx, + void __iomem *page_addr, const u8 *key, + size_t key_len, const u8 *iv, size_t iv_len) +{ + void __iomem *key_ptr = page_addr + ctx->key_offs; + void __iomem *iv_ptr = page_addr + ctx->iv_offs; + + memcpy_toio32(key_ptr, key, key_len / 4); + memcpy_toio32(iv_ptr, iv, iv_len / 4); +} + +/* + * Load a context into the engines context memory. + * + * Returns the index of the context page where the context was loaded. + */ +static unsigned spacc_load_ctx(struct spacc_generic_ctx *ctx, + const u8 *ciph_key, size_t ciph_len, + const u8 *iv, size_t ivlen, const u8 *hash_key, + size_t hash_len) +{ + unsigned indx = ctx->engine->next_ctx++; + void __iomem *ciph_page_addr, *hash_page_addr; + + ciph_page_addr = spacc_ctx_page_addr(ctx, indx, 1); + hash_page_addr = spacc_ctx_page_addr(ctx, indx, 0); + + ctx->engine->next_ctx &= ctx->engine->fifo_sz - 1; + spacc_cipher_write_ctx(ctx, ciph_page_addr, ciph_key, ciph_len, iv, + ivlen); + writel(ciph_len | (indx << SPA_KEY_SZ_CTX_INDEX_OFFSET) | + (1 << SPA_KEY_SZ_CIPHER_OFFSET), + ctx->engine->regs + SPA_KEY_SZ_REG_OFFSET); + + if (hash_key) { + memcpy_toio32(hash_page_addr, hash_key, hash_len / 4); + writel(hash_len | (indx << SPA_KEY_SZ_CTX_INDEX_OFFSET), + ctx->engine->regs + SPA_KEY_SZ_REG_OFFSET); + } + + return indx; +} + +/* Count the number of scatterlist entries in a scatterlist. */ +static int sg_count(struct scatterlist *sg_list, int nbytes) +{ + struct scatterlist *sg = sg_list; + int sg_nents = 0; + + while (nbytes > 0) { + ++sg_nents; + nbytes -= sg->length; + sg = sg_next(sg); + } + + return sg_nents; +} + +static inline void ddt_set(struct spacc_ddt *ddt, dma_addr_t phys, size_t len) +{ + ddt->p = phys; + ddt->len = len; +} + +/* + * Take a crypto request and scatterlists for the data and turn them into DDTs + * for passing to the crypto engines. This also DMA maps the data so that the + * crypto engines can DMA to/from them. + */ +static struct spacc_ddt *spacc_sg_to_ddt(struct spacc_engine *engine, + struct scatterlist *payload, + unsigned nbytes, + enum dma_data_direction dir, + dma_addr_t *ddt_phys) +{ + unsigned nents, mapped_ents; + struct scatterlist *cur; + struct spacc_ddt *ddt; + int i; + + nents = sg_count(payload, nbytes); + mapped_ents = dma_map_sg(engine->dev, payload, nents, dir); + + if (mapped_ents + 1 > MAX_DDT_LEN) + goto out; + + ddt = dma_pool_alloc(engine->req_pool, GFP_ATOMIC, ddt_phys); + if (!ddt) + goto out; + + for_each_sg(payload, cur, mapped_ents, i) + ddt_set(&ddt[i], sg_dma_address(cur), sg_dma_len(cur)); + ddt_set(&ddt[mapped_ents], 0, 0); + + return ddt; + +out: + dma_unmap_sg(engine->dev, payload, nents, dir); + return NULL; +} + +static int spacc_aead_make_ddts(struct spacc_req *req, u8 *giv) +{ + struct aead_request *areq = container_of(req->req, struct aead_request, + base); + struct spacc_engine *engine = req->engine; + struct spacc_ddt *src_ddt, *dst_ddt; + unsigned ivsize = crypto_aead_ivsize(crypto_aead_reqtfm(areq)); + unsigned nents = sg_count(areq->src, areq->cryptlen); + dma_addr_t iv_addr; + struct scatterlist *cur; + int i, dst_ents, src_ents, assoc_ents; + u8 *iv = giv ? giv : areq->iv; + + src_ddt = dma_pool_alloc(engine->req_pool, GFP_ATOMIC, &req->src_addr); + if (!src_ddt) + return -ENOMEM; + + dst_ddt = dma_pool_alloc(engine->req_pool, GFP_ATOMIC, &req->dst_addr); + if (!dst_ddt) { + dma_pool_free(engine->req_pool, src_ddt, req->src_addr); + return -ENOMEM; + } + + req->src_ddt = src_ddt; + req->dst_ddt = dst_ddt; + + assoc_ents = dma_map_sg(engine->dev, areq->assoc, + sg_count(areq->assoc, areq->assoclen), DMA_TO_DEVICE); + if (areq->src != areq->dst) { + src_ents = dma_map_sg(engine->dev, areq->src, nents, + DMA_TO_DEVICE); + dst_ents = dma_map_sg(engine->dev, areq->dst, nents, + DMA_FROM_DEVICE); + } else { + src_ents = dma_map_sg(engine->dev, areq->src, nents, + DMA_BIDIRECTIONAL); + dst_ents = 0; + } + + /* + * Map the IV/GIV. For the GIV it needs to be bidirectional as it is + * formed by the crypto block and sent as the ESP IV for IPSEC. + */ + iv_addr = dma_map_single(engine->dev, iv, ivsize, + giv ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE); + req->giv_pa = iv_addr; + + /* + * Map the associated data. For decryption we don't copy the + * associated data. + */ + for_each_sg(areq->assoc, cur, assoc_ents, i) { + ddt_set(src_ddt++, sg_dma_address(cur), sg_dma_len(cur)); + if (req->is_encrypt) + ddt_set(dst_ddt++, sg_dma_address(cur), + sg_dma_len(cur)); + } + ddt_set(src_ddt++, iv_addr, ivsize); + + if (giv || req->is_encrypt) + ddt_set(dst_ddt++, iv_addr, ivsize); + + /* + * Now map in the payload for the source and destination and terminate + * with the NULL pointers. + */ + for_each_sg(areq->src, cur, src_ents, i) { + ddt_set(src_ddt++, sg_dma_address(cur), sg_dma_len(cur)); + if (areq->src == areq->dst) + ddt_set(dst_ddt++, sg_dma_address(cur), + sg_dma_len(cur)); + } + + for_each_sg(areq->dst, cur, dst_ents, i) + ddt_set(dst_ddt++, sg_dma_address(cur), + sg_dma_len(cur)); + + ddt_set(src_ddt, 0, 0); + ddt_set(dst_ddt, 0, 0); + + return 0; +} + +static void spacc_aead_free_ddts(struct spacc_req *req) +{ + struct aead_request *areq = container_of(req->req, struct aead_request, + base); + struct spacc_alg *alg = to_spacc_alg(req->req->tfm->__crt_alg); + struct spacc_ablk_ctx *aead_ctx = crypto_tfm_ctx(req->req->tfm); + struct spacc_engine *engine = aead_ctx->generic.engine; + unsigned ivsize = alg->alg.cra_aead.ivsize; + unsigned nents = sg_count(areq->src, areq->cryptlen); + + if (areq->src != areq->dst) { + dma_unmap_sg(engine->dev, areq->src, nents, DMA_TO_DEVICE); + dma_unmap_sg(engine->dev, areq->dst, + sg_count(areq->dst, areq->cryptlen), + DMA_FROM_DEVICE); + } else + dma_unmap_sg(engine->dev, areq->src, nents, DMA_BIDIRECTIONAL); + + dma_unmap_sg(engine->dev, areq->assoc, + sg_count(areq->assoc, areq->assoclen), DMA_TO_DEVICE); + + dma_unmap_single(engine->dev, req->giv_pa, ivsize, DMA_BIDIRECTIONAL); + + dma_pool_free(engine->req_pool, req->src_ddt, req->src_addr); + dma_pool_free(engine->req_pool, req->dst_ddt, req->dst_addr); +} + +static void spacc_free_ddt(struct spacc_req *req, struct spacc_ddt *ddt, + dma_addr_t ddt_addr, struct scatterlist *payload, + unsigned nbytes, enum dma_data_direction dir) +{ + unsigned nents = sg_count(payload, nbytes); + + dma_unmap_sg(req->engine->dev, payload, nents, dir); + dma_pool_free(req->engine->req_pool, ddt, ddt_addr); +} + +/* + * Set key for a DES operation in an AEAD cipher. This also performs weak key + * checking if required. + */ +static int spacc_aead_des_setkey(struct crypto_aead *aead, const u8 *key, + unsigned int len) +{ + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct spacc_aead_ctx *ctx = crypto_tfm_ctx(tfm); + u32 tmp[DES_EXPKEY_WORDS]; + + if (unlikely(!des_ekey(tmp, key)) && + (crypto_aead_get_flags(aead)) & CRYPTO_TFM_REQ_WEAK_KEY) { + tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY; + return -EINVAL; + } + + memcpy(ctx->cipher_key, key, len); + ctx->cipher_key_len = len; + + return 0; +} + +/* Set the key for the AES block cipher component of the AEAD transform. */ +static int spacc_aead_aes_setkey(struct crypto_aead *aead, const u8 *key, + unsigned int len) +{ + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct spacc_aead_ctx *ctx = crypto_tfm_ctx(tfm); + + /* + * IPSec engine only supports 128 and 256 bit AES keys. If we get a + * request for any other size (192 bits) then we need to do a software + * fallback. + */ + if (len != AES_KEYSIZE_128 && len != AES_KEYSIZE_256) { + /* + * Set the fallback transform to use the same request flags as + * the hardware transform. + */ + ctx->sw_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; + ctx->sw_cipher->base.crt_flags |= + tfm->crt_flags & CRYPTO_TFM_REQ_MASK; + return crypto_aead_setkey(ctx->sw_cipher, key, len); + } + + memcpy(ctx->cipher_key, key, len); + ctx->cipher_key_len = len; + + return 0; +} + +static int spacc_aead_setkey(struct crypto_aead *tfm, const u8 *key, + unsigned int keylen) +{ + struct spacc_aead_ctx *ctx = crypto_aead_ctx(tfm); + struct spacc_alg *alg = to_spacc_alg(tfm->base.__crt_alg); + struct rtattr *rta = (void *)key; + struct crypto_authenc_key_param *param; + unsigned int authkeylen, enckeylen; + int err = -EINVAL; + + if (!RTA_OK(rta, keylen)) + goto badkey; + + if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM) + goto badkey; + + if (RTA_PAYLOAD(rta) < sizeof(*param)) + goto badkey; + + param = RTA_DATA(rta); + enckeylen = be32_to_cpu(param->enckeylen); + + key += RTA_ALIGN(rta->rta_len); + keylen -= RTA_ALIGN(rta->rta_len); + + if (keylen < enckeylen) + goto badkey; + + authkeylen = keylen - enckeylen; + + if (enckeylen > AES_MAX_KEY_SIZE) + goto badkey; + + if ((alg->ctrl_default & SPACC_CRYPTO_ALG_MASK) == + SPA_CTRL_CIPH_ALG_AES) + err = spacc_aead_aes_setkey(tfm, key + authkeylen, enckeylen); + else + err = spacc_aead_des_setkey(tfm, key + authkeylen, enckeylen); + + if (err) + goto badkey; + + memcpy(ctx->hash_ctx, key, authkeylen); + ctx->hash_key_len = authkeylen; + + return 0; + +badkey: + crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; +} + +static int spacc_aead_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + struct spacc_aead_ctx *ctx = crypto_tfm_ctx(crypto_aead_tfm(tfm)); + + ctx->auth_size = authsize; + + return 0; +} + +/* + * Check if an AEAD request requires a fallback operation. Some requests can't + * be completed in hardware because the hardware may not support certain key + * sizes. In these cases we need to complete the request in software. + */ +static int spacc_aead_need_fallback(struct spacc_req *req) +{ + struct aead_request *aead_req; + struct crypto_tfm *tfm = req->req->tfm; + struct crypto_alg *alg = req->req->tfm->__crt_alg; + struct spacc_alg *spacc_alg = to_spacc_alg(alg); + struct spacc_aead_ctx *ctx = crypto_tfm_ctx(tfm); + + aead_req = container_of(req->req, struct aead_request, base); + /* + * If we have a non-supported key-length, then we need to do a + * software fallback. + */ + if ((spacc_alg->ctrl_default & SPACC_CRYPTO_ALG_MASK) == + SPA_CTRL_CIPH_ALG_AES && + ctx->cipher_key_len != AES_KEYSIZE_128 && + ctx->cipher_key_len != AES_KEYSIZE_256) + return 1; + + return 0; +} + +static int spacc_aead_do_fallback(struct aead_request *req, unsigned alg_type, + bool is_encrypt) +{ + struct crypto_tfm *old_tfm = crypto_aead_tfm(crypto_aead_reqtfm(req)); + struct spacc_aead_ctx *ctx = crypto_tfm_ctx(old_tfm); + int err; + + if (ctx->sw_cipher) { + /* + * Change the request to use the software fallback transform, + * and once the ciphering has completed, put the old transform + * back into the request. + */ + aead_request_set_tfm(req, ctx->sw_cipher); + err = is_encrypt ? crypto_aead_encrypt(req) : + crypto_aead_decrypt(req); + aead_request_set_tfm(req, __crypto_aead_cast(old_tfm)); + } else + err = -EINVAL; + + return err; +} + +static void spacc_aead_complete(struct spacc_req *req) +{ + spacc_aead_free_ddts(req); + req->req->complete(req->req, req->result); +} + +static int spacc_aead_submit(struct spacc_req *req) +{ + struct crypto_tfm *tfm = req->req->tfm; + struct spacc_aead_ctx *ctx = crypto_tfm_ctx(tfm); + struct crypto_alg *alg = req->req->tfm->__crt_alg; + struct spacc_alg *spacc_alg = to_spacc_alg(alg); + struct spacc_engine *engine = ctx->generic.engine; + u32 ctrl, proc_len, assoc_len; + struct aead_request *aead_req = + container_of(req->req, struct aead_request, base); + + req->result = -EINPROGRESS; + req->ctx_id = spacc_load_ctx(&ctx->generic, ctx->cipher_key, + ctx->cipher_key_len, aead_req->iv, alg->cra_aead.ivsize, + ctx->hash_ctx, ctx->hash_key_len); + + /* Set the source and destination DDT pointers. */ + writel(req->src_addr, engine->regs + SPA_SRC_PTR_REG_OFFSET); + writel(req->dst_addr, engine->regs + SPA_DST_PTR_REG_OFFSET); + writel(0, engine->regs + SPA_OFFSET_REG_OFFSET); + + assoc_len = aead_req->assoclen; + proc_len = aead_req->cryptlen + assoc_len; + + /* + * If we aren't generating an IV, then we need to include the IV in the + * associated data so that it is included in the hash. + */ + if (!req->giv) { + assoc_len += crypto_aead_ivsize(crypto_aead_reqtfm(aead_req)); + proc_len += crypto_aead_ivsize(crypto_aead_reqtfm(aead_req)); + } else + proc_len += req->giv_len; + + /* + * If we are decrypting, we need to take the length of the ICV out of + * the processing length. + */ + if (!req->is_encrypt) + proc_len -= ctx->auth_size; + + writel(proc_len, engine->regs + SPA_PROC_LEN_REG_OFFSET); + writel(assoc_len, engine->regs + SPA_AAD_LEN_REG_OFFSET); + writel(ctx->auth_size, engine->regs + SPA_ICV_LEN_REG_OFFSET); + writel(0, engine->regs + SPA_ICV_OFFSET_REG_OFFSET); + writel(0, engine->regs + SPA_AUX_INFO_REG_OFFSET); + + ctrl = spacc_alg->ctrl_default | (req->ctx_id << SPA_CTRL_CTX_IDX) | + (1 << SPA_CTRL_ICV_APPEND); + if (req->is_encrypt) + ctrl |= (1 << SPA_CTRL_ENCRYPT_IDX) | (1 << SPA_CTRL_AAD_COPY); + else + ctrl |= (1 << SPA_CTRL_KEY_EXP); + + mod_timer(&engine->packet_timeout, jiffies + PACKET_TIMEOUT); + + writel(ctrl, engine->regs + SPA_CTRL_REG_OFFSET); + + return -EINPROGRESS; +} + +/* + * Setup an AEAD request for processing. This will configure the engine, load + * the context and then start the packet processing. + * + * @giv Pointer to destination address for a generated IV. If the + * request does not need to generate an IV then this should be set to NULL. + */ +static int spacc_aead_setup(struct aead_request *req, u8 *giv, + unsigned alg_type, bool is_encrypt) +{ + struct crypto_alg *alg = req->base.tfm->__crt_alg; + struct spacc_engine *engine = to_spacc_alg(alg)->engine; + struct spacc_req *dev_req = aead_request_ctx(req); + int err = -EINPROGRESS; + unsigned long flags; + unsigned ivsize = crypto_aead_ivsize(crypto_aead_reqtfm(req)); + + dev_req->giv = giv; + dev_req->giv_len = ivsize; + dev_req->req = &req->base; + dev_req->is_encrypt = is_encrypt; + dev_req->result = -EBUSY; + dev_req->engine = engine; + dev_req->complete = spacc_aead_complete; + + if (unlikely(spacc_aead_need_fallback(dev_req))) + return spacc_aead_do_fallback(req, alg_type, is_encrypt); + + spacc_aead_make_ddts(dev_req, dev_req->giv); + + err = -EINPROGRESS; + spin_lock_irqsave(&engine->hw_lock, flags); + if (unlikely(spacc_fifo_cmd_full(engine))) { + if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { + err = -EBUSY; + spin_unlock_irqrestore(&engine->hw_lock, flags); + goto out_free_ddts; + } + list_add_tail(&dev_req->list, &engine->pending); + } else { + ++engine->in_flight; + list_add_tail(&dev_req->list, &engine->in_progress); + spacc_aead_submit(dev_req); + } + spin_unlock_irqrestore(&engine->hw_lock, flags); + + goto out; + +out_free_ddts: + spacc_aead_free_ddts(dev_req); +out: + return err; +} + +static int spacc_aead_encrypt(struct aead_request *req) +{ + struct crypto_aead *aead = crypto_aead_reqtfm(req); + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct spacc_alg *alg = to_spacc_alg(tfm->__crt_alg); + + return spacc_aead_setup(req, NULL, alg->type, 1); +} + +static int spacc_aead_givencrypt(struct aead_givcrypt_request *req) +{ + struct crypto_aead *tfm = aead_givcrypt_reqtfm(req); + struct spacc_aead_ctx *ctx = crypto_aead_ctx(tfm); + size_t ivsize = crypto_aead_ivsize(tfm); + struct spacc_alg *alg = to_spacc_alg(tfm->base.__crt_alg); + unsigned len; + __be64 seq; + + memcpy(req->areq.iv, ctx->salt, ivsize); + len = ivsize; + if (ivsize > sizeof(u64)) { + memset(req->giv, 0, ivsize - sizeof(u64)); + len = sizeof(u64); + } + seq = cpu_to_be64(req->seq); + memcpy(req->giv + ivsize - len, &seq, len); + + return spacc_aead_setup(&req->areq, req->giv, alg->type, 1); +} + +static int spacc_aead_decrypt(struct aead_request *req) +{ + struct crypto_aead *aead = crypto_aead_reqtfm(req); + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct spacc_alg *alg = to_spacc_alg(tfm->__crt_alg); + + return spacc_aead_setup(req, NULL, alg->type, 0); +} + +/* + * Initialise a new AEAD context. This is responsible for allocating the + * fallback cipher and initialising the context. + */ +static int spacc_aead_cra_init(struct crypto_tfm *tfm) +{ + struct spacc_aead_ctx *ctx = crypto_tfm_ctx(tfm); + struct crypto_alg *alg = tfm->__crt_alg; + struct spacc_alg *spacc_alg = to_spacc_alg(alg); + struct spacc_engine *engine = spacc_alg->engine; + + ctx->generic.flags = spacc_alg->type; + ctx->generic.engine = engine; + ctx->sw_cipher = crypto_alloc_aead(alg->cra_name, 0, + CRYPTO_ALG_ASYNC | + CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(ctx->sw_cipher)) { + dev_warn(engine->dev, "failed to allocate fallback for %s\n", + alg->cra_name); + ctx->sw_cipher = NULL; + } + ctx->generic.key_offs = spacc_alg->key_offs; + ctx->generic.iv_offs = spacc_alg->iv_offs; + + get_random_bytes(ctx->salt, sizeof(ctx->salt)); + + tfm->crt_aead.reqsize = sizeof(struct spacc_req); + + return 0; +} + +/* + * Destructor for an AEAD context. This is called when the transform is freed + * and must free the fallback cipher. + */ +static void spacc_aead_cra_exit(struct crypto_tfm *tfm) +{ + struct spacc_aead_ctx *ctx = crypto_tfm_ctx(tfm); + + if (ctx->sw_cipher) + crypto_free_aead(ctx->sw_cipher); + ctx->sw_cipher = NULL; +} + +/* + * Set the DES key for a block cipher transform. This also performs weak key + * checking if the transform has requested it. + */ +static int spacc_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key, + unsigned int len) +{ + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); + struct spacc_ablk_ctx *ctx = crypto_tfm_ctx(tfm); + u32 tmp[DES_EXPKEY_WORDS]; + + if (len > DES3_EDE_KEY_SIZE) { + crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; + } + + if (unlikely(!des_ekey(tmp, key)) && + (crypto_ablkcipher_get_flags(cipher) & CRYPTO_TFM_REQ_WEAK_KEY)) { + tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY; + return -EINVAL; + } + + memcpy(ctx->key, key, len); + ctx->key_len = len; + + return 0; +} + +/* + * Set the key for an AES block cipher. Some key lengths are not supported in + * hardware so this must also check whether a fallback is needed. + */ +static int spacc_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key, + unsigned int len) +{ + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); + struct spacc_ablk_ctx *ctx = crypto_tfm_ctx(tfm); + int err = 0; + + if (len > AES_MAX_KEY_SIZE) { + crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; + } + + /* + * IPSec engine only supports 128 and 256 bit AES keys. If we get a + * request for any other size (192 bits) then we need to do a software + * fallback. + */ + if ((len != AES_KEYSIZE_128 || len != AES_KEYSIZE_256) && + ctx->sw_cipher) { + /* + * Set the fallback transform to use the same request flags as + * the hardware transform. + */ + ctx->sw_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; + ctx->sw_cipher->base.crt_flags |= + cipher->base.crt_flags & CRYPTO_TFM_REQ_MASK; + + err = crypto_ablkcipher_setkey(ctx->sw_cipher, key, len); + if (err) + goto sw_setkey_failed; + } else if ((len != AES_KEYSIZE_128 || len != AES_KEYSIZE_256) && + !ctx->sw_cipher) + err = -EINVAL; + + memcpy(ctx->key, key, len); + ctx->key_len = len; + +sw_setkey_failed: + if (err && ctx->sw_cipher) { + tfm->crt_flags &= ~CRYPTO_TFM_RES_MASK; + tfm->crt_flags |= + ctx->sw_cipher->base.crt_flags & CRYPTO_TFM_RES_MASK; + } + + return err; +} + +static int spacc_kasumi_f8_setkey(struct crypto_ablkcipher *cipher, + const u8 *key, unsigned int len) +{ + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); + struct spacc_ablk_ctx *ctx = crypto_tfm_ctx(tfm); + int err = 0; + + if (len > AES_MAX_KEY_SIZE) { + crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); + err = -EINVAL; + goto out; + } + + memcpy(ctx->key, key, len); + ctx->key_len = len; + +out: + return err; +} + +static int spacc_ablk_need_fallback(struct spacc_req *req) +{ + struct spacc_ablk_ctx *ctx; + struct crypto_tfm *tfm = req->req->tfm; + struct crypto_alg *alg = req->req->tfm->__crt_alg; + struct spacc_alg *spacc_alg = to_spacc_alg(alg); + + ctx = crypto_tfm_ctx(tfm); + + return (spacc_alg->ctrl_default & SPACC_CRYPTO_ALG_MASK) == + SPA_CTRL_CIPH_ALG_AES && + ctx->key_len != AES_KEYSIZE_128 && + ctx->key_len != AES_KEYSIZE_256; +} + +static void spacc_ablk_complete(struct spacc_req *req) +{ + struct ablkcipher_request *ablk_req = + container_of(req->req, struct ablkcipher_request, base); + + if (ablk_req->src != ablk_req->dst) { + spacc_free_ddt(req, req->src_ddt, req->src_addr, ablk_req->src, + ablk_req->nbytes, DMA_TO_DEVICE); + spacc_free_ddt(req, req->dst_ddt, req->dst_addr, ablk_req->dst, + ablk_req->nbytes, DMA_FROM_DEVICE); + } else + spacc_free_ddt(req, req->dst_ddt, req->dst_addr, ablk_req->dst, + ablk_req->nbytes, DMA_BIDIRECTIONAL); + + req->req->complete(req->req, req->result); +} + +static int spacc_ablk_submit(struct spacc_req *req) +{ + struct crypto_tfm *tfm = req->req->tfm; + struct spacc_ablk_ctx *ctx = crypto_tfm_ctx(tfm); + struct ablkcipher_request *ablk_req = ablkcipher_request_cast(req->req); + struct crypto_alg *alg = req->req->tfm->__crt_alg; + struct spacc_alg *spacc_alg = to_spacc_alg(alg); + struct spacc_engine *engine = ctx->generic.engine; + u32 ctrl; + + req->ctx_id = spacc_load_ctx(&ctx->generic, ctx->key, + ctx->key_len, ablk_req->info, alg->cra_ablkcipher.ivsize, + NULL, 0); + + writel(req->src_addr, engine->regs + SPA_SRC_PTR_REG_OFFSET); + writel(req->dst_addr, engine->regs + SPA_DST_PTR_REG_OFFSET); + writel(0, engine->regs + SPA_OFFSET_REG_OFFSET); + + writel(ablk_req->nbytes, engine->regs + SPA_PROC_LEN_REG_OFFSET); + writel(0, engine->regs + SPA_ICV_OFFSET_REG_OFFSET); + writel(0, engine->regs + SPA_AUX_INFO_REG_OFFSET); + writel(0, engine->regs + SPA_AAD_LEN_REG_OFFSET); + + ctrl = spacc_alg->ctrl_default | (req->ctx_id << SPA_CTRL_CTX_IDX) | + (req->is_encrypt ? (1 << SPA_CTRL_ENCRYPT_IDX) : + (1 << SPA_CTRL_KEY_EXP)); + + mod_timer(&engine->packet_timeout, jiffies + PACKET_TIMEOUT); + + writel(ctrl, engine->regs + SPA_CTRL_REG_OFFSET); + + return -EINPROGRESS; +} + +static int spacc_ablk_do_fallback(struct ablkcipher_request *req, + unsigned alg_type, bool is_encrypt) +{ + struct crypto_tfm *old_tfm = + crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req)); + struct spacc_ablk_ctx *ctx = crypto_tfm_ctx(old_tfm); + int err; + + if (!ctx->sw_cipher) + return -EINVAL; + + /* + * Change the request to use the software fallback transform, and once + * the ciphering has completed, put the old transform back into the + * request. + */ + ablkcipher_request_set_tfm(req, ctx->sw_cipher); + err = is_encrypt ? crypto_ablkcipher_encrypt(req) : + crypto_ablkcipher_decrypt(req); + ablkcipher_request_set_tfm(req, __crypto_ablkcipher_cast(old_tfm)); + + return err; +} + +static int spacc_ablk_setup(struct ablkcipher_request *req, unsigned alg_type, + bool is_encrypt) +{ + struct crypto_alg *alg = req->base.tfm->__crt_alg; + struct spacc_engine *engine = to_spacc_alg(alg)->engine; + struct spacc_req *dev_req = ablkcipher_request_ctx(req); + unsigned long flags; + int err = -ENOMEM; + + dev_req->req = &req->base; + dev_req->is_encrypt = is_encrypt; + dev_req->engine = engine; + dev_req->complete = spacc_ablk_complete; + dev_req->result = -EINPROGRESS; + + if (unlikely(spacc_ablk_need_fallback(dev_req))) + return spacc_ablk_do_fallback(req, alg_type, is_encrypt); + + /* + * Create the DDT's for the engine. If we share the same source and + * destination then we can optimize by reusing the DDT's. + */ + if (req->src != req->dst) { + dev_req->src_ddt = spacc_sg_to_ddt(engine, req->src, + req->nbytes, DMA_TO_DEVICE, &dev_req->src_addr); + if (!dev_req->src_ddt) + goto out; + + dev_req->dst_ddt = spacc_sg_to_ddt(engine, req->dst, + req->nbytes, DMA_FROM_DEVICE, &dev_req->dst_addr); + if (!dev_req->dst_ddt) + goto out_free_src; + } else { + dev_req->dst_ddt = spacc_sg_to_ddt(engine, req->dst, + req->nbytes, DMA_BIDIRECTIONAL, &dev_req->dst_addr); + if (!dev_req->dst_ddt) + goto out; + + dev_req->src_ddt = NULL; + dev_req->src_addr = dev_req->dst_addr; + } + + err = -EINPROGRESS; + spin_lock_irqsave(&engine->hw_lock, flags); + /* + * Check if the engine will accept the operation now. If it won't then + * we either stick it on the end of a pending list if we can backlog, + * or bailout with an error if not. + */ + if (unlikely(spacc_fifo_cmd_full(engine))) { + if (!(req->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { + err = -EBUSY; + spin_unlock_irqrestore(&engine->hw_lock, flags); + goto out_free_ddts; + } + list_add_tail(&dev_req->list, &engine->pending); + } else { + ++engine->in_flight; + list_add_tail(&dev_req->list, &engine->in_progress); + spacc_ablk_submit(dev_req); + } + spin_unlock_irqrestore(&engine->hw_lock, flags); + + goto out; + +out_free_ddts: + spacc_free_ddt(dev_req, dev_req->dst_ddt, dev_req->dst_addr, req->dst, + req->nbytes, req->src == req->dst ? + DMA_BIDIRECTIONAL : DMA_FROM_DEVICE); +out_free_src: + if (req->src != req->dst) + spacc_free_ddt(dev_req, dev_req->src_ddt, dev_req->src_addr, + req->src, req->nbytes, DMA_TO_DEVICE); +out: + return err; +} + +static int spacc_ablk_cra_init(struct crypto_tfm *tfm) +{ + struct spacc_ablk_ctx *ctx = crypto_tfm_ctx(tfm); + struct crypto_alg *alg = tfm->__crt_alg; + struct spacc_alg *spacc_alg = to_spacc_alg(alg); + struct spacc_engine *engine = spacc_alg->engine; + + ctx->generic.flags = spacc_alg->type; + ctx->generic.engine = engine; + if (alg->cra_flags & CRYPTO_ALG_NEED_FALLBACK) { + ctx->sw_cipher = crypto_alloc_ablkcipher(alg->cra_name, 0, + CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(ctx->sw_cipher)) { + dev_warn(engine->dev, "failed to allocate fallback for %s\n", + alg->cra_name); + ctx->sw_cipher = NULL; + } + } + ctx->generic.key_offs = spacc_alg->key_offs; + ctx->generic.iv_offs = spacc_alg->iv_offs; + + tfm->crt_ablkcipher.reqsize = sizeof(struct spacc_req); + + return 0; +} + +static void spacc_ablk_cra_exit(struct crypto_tfm *tfm) +{ + struct spacc_ablk_ctx *ctx = crypto_tfm_ctx(tfm); + + if (ctx->sw_cipher) + crypto_free_ablkcipher(ctx->sw_cipher); + ctx->sw_cipher = NULL; +} + +static int spacc_ablk_encrypt(struct ablkcipher_request *req) +{ + struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(req); + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); + struct spacc_alg *alg = to_spacc_alg(tfm->__crt_alg); + + return spacc_ablk_setup(req, alg->type, 1); +} + +static int spacc_ablk_decrypt(struct ablkcipher_request *req) +{ + struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(req); + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); + struct spacc_alg *alg = to_spacc_alg(tfm->__crt_alg); + + return spacc_ablk_setup(req, alg->type, 0); +} + +static inline int spacc_fifo_stat_empty(struct spacc_engine *engine) +{ + return readl(engine->regs + SPA_FIFO_STAT_REG_OFFSET) & + SPA_FIFO_STAT_EMPTY; +} + +static void spacc_process_done(struct spacc_engine *engine) +{ + struct spacc_req *req; + unsigned long flags; + + spin_lock_irqsave(&engine->hw_lock, flags); + + while (!spacc_fifo_stat_empty(engine)) { + req = list_first_entry(&engine->in_progress, struct spacc_req, + list); + list_move_tail(&req->list, &engine->completed); + + /* POP the status register. */ + writel(~0, engine->regs + SPA_STAT_POP_REG_OFFSET); + req->result = (readl(engine->regs + SPA_STATUS_REG_OFFSET) & + SPA_STATUS_RES_CODE_MASK) >> SPA_STATUS_RES_CODE_OFFSET; + + /* + * Convert the SPAcc error status into the standard POSIX error + * codes. + */ + if (unlikely(req->result)) { + switch (req->result) { + case SPA_STATUS_ICV_FAIL: + req->result = -EBADMSG; + break; + + case SPA_STATUS_MEMORY_ERROR: + dev_warn(engine->dev, + "memory error triggered\n"); + req->result = -EFAULT; + break; + + case SPA_STATUS_BLOCK_ERROR: + dev_warn(engine->dev, + "block error triggered\n"); + req->result = -EIO; + break; + } + } + } + + tasklet_schedule(&engine->complete); + + spin_unlock_irqrestore(&engine->hw_lock, flags); +} + +static irqreturn_t spacc_spacc_irq(int irq, void *dev) +{ + struct spacc_engine *engine = (struct spacc_engine *)dev; + u32 spacc_irq_stat = readl(engine->regs + SPA_IRQ_STAT_REG_OFFSET); + + writel(spacc_irq_stat, engine->regs + SPA_IRQ_STAT_REG_OFFSET); + spacc_process_done(engine); + + return IRQ_HANDLED; +} + +static void spacc_packet_timeout(unsigned long data) +{ + struct spacc_engine *engine = (struct spacc_engine *)data; + + spacc_process_done(engine); +} + +static int spacc_req_submit(struct spacc_req *req) +{ + struct crypto_alg *alg = req->req->tfm->__crt_alg; + + if (CRYPTO_ALG_TYPE_AEAD == (CRYPTO_ALG_TYPE_MASK & alg->cra_flags)) + return spacc_aead_submit(req); + else + return spacc_ablk_submit(req); +} + +static void spacc_spacc_complete(unsigned long data) +{ + struct spacc_engine *engine = (struct spacc_engine *)data; + struct spacc_req *req, *tmp; + unsigned long flags; + int num_removed = 0; + LIST_HEAD(completed); + + spin_lock_irqsave(&engine->hw_lock, flags); + list_splice_init(&engine->completed, &completed); + spin_unlock_irqrestore(&engine->hw_lock, flags); + + list_for_each_entry_safe(req, tmp, &completed, list) { + ++num_removed; + req->complete(req); + } + + /* Try and fill the engine back up again. */ + spin_lock_irqsave(&engine->hw_lock, flags); + + engine->in_flight -= num_removed; + + list_for_each_entry_safe(req, tmp, &engine->pending, list) { + if (spacc_fifo_cmd_full(engine)) + break; + + list_move_tail(&req->list, &engine->in_progress); + ++engine->in_flight; + req->result = spacc_req_submit(req); + } + + if (engine->in_flight) + mod_timer(&engine->packet_timeout, jiffies + PACKET_TIMEOUT); + + spin_unlock_irqrestore(&engine->hw_lock, flags); +} + +#ifdef CONFIG_PM +static int spacc_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct spacc_engine *engine = platform_get_drvdata(pdev); + + /* + * We only support standby mode. All we have to do is gate the clock to + * the spacc. The hardware will preserve state until we turn it back + * on again. + */ + clk_disable(engine->clk); + + return 0; +} + +static int spacc_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct spacc_engine *engine = platform_get_drvdata(pdev); + + return clk_enable(engine->clk); +} + +static const struct dev_pm_ops spacc_pm_ops = { + .suspend = spacc_suspend, + .resume = spacc_resume, +}; +#endif /* CONFIG_PM */ + +static inline struct spacc_engine *spacc_dev_to_engine(struct device *dev) +{ + return dev ? platform_get_drvdata(to_platform_device(dev)) : NULL; +} + +static ssize_t spacc_stat_irq_thresh_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct spacc_engine *engine = spacc_dev_to_engine(dev); + + return snprintf(buf, PAGE_SIZE, "%u\n", engine->stat_irq_thresh); +} + +static ssize_t spacc_stat_irq_thresh_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct spacc_engine *engine = spacc_dev_to_engine(dev); + unsigned long thresh; + + if (strict_strtoul(buf, 0, &thresh)) + return -EINVAL; + + thresh = clamp(thresh, 1UL, engine->fifo_sz - 1); + + engine->stat_irq_thresh = thresh; + writel(engine->stat_irq_thresh << SPA_IRQ_CTRL_STAT_CNT_OFFSET, + engine->regs + SPA_IRQ_CTRL_REG_OFFSET); + + return len; +} +static DEVICE_ATTR(stat_irq_thresh, 0644, spacc_stat_irq_thresh_show, + spacc_stat_irq_thresh_store); + +static struct spacc_alg ipsec_engine_algs[] = { + { + .ctrl_default = SPA_CTRL_CIPH_ALG_AES | SPA_CTRL_CIPH_MODE_CBC, + .key_offs = 0, + .iv_offs = AES_MAX_KEY_SIZE, + .alg = { + .cra_name = "cbc(aes)", + .cra_driver_name = "cbc-aes-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | + CRYPTO_ALG_ASYNC | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_ablk_ctx), + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_ablkcipher = { + .setkey = spacc_aes_setkey, + .encrypt = spacc_ablk_encrypt, + .decrypt = spacc_ablk_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cra_init = spacc_ablk_cra_init, + .cra_exit = spacc_ablk_cra_exit, + }, + }, + { + .key_offs = 0, + .iv_offs = AES_MAX_KEY_SIZE, + .ctrl_default = SPA_CTRL_CIPH_ALG_AES | SPA_CTRL_CIPH_MODE_ECB, + .alg = { + .cra_name = "ecb(aes)", + .cra_driver_name = "ecb-aes-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | + CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_ablk_ctx), + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_ablkcipher = { + .setkey = spacc_aes_setkey, + .encrypt = spacc_ablk_encrypt, + .decrypt = spacc_ablk_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + }, + .cra_init = spacc_ablk_cra_init, + .cra_exit = spacc_ablk_cra_exit, + }, + }, + { + .key_offs = DES_BLOCK_SIZE, + .iv_offs = 0, + .ctrl_default = SPA_CTRL_CIPH_ALG_DES | SPA_CTRL_CIPH_MODE_CBC, + .alg = { + .cra_name = "cbc(des)", + .cra_driver_name = "cbc-des-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_ablk_ctx), + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_ablkcipher = { + .setkey = spacc_des_setkey, + .encrypt = spacc_ablk_encrypt, + .decrypt = spacc_ablk_decrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = DES_BLOCK_SIZE, + }, + .cra_init = spacc_ablk_cra_init, + .cra_exit = spacc_ablk_cra_exit, + }, + }, + { + .key_offs = DES_BLOCK_SIZE, + .iv_offs = 0, + .ctrl_default = SPA_CTRL_CIPH_ALG_DES | SPA_CTRL_CIPH_MODE_ECB, + .alg = { + .cra_name = "ecb(des)", + .cra_driver_name = "ecb-des-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_ablk_ctx), + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_ablkcipher = { + .setkey = spacc_des_setkey, + .encrypt = spacc_ablk_encrypt, + .decrypt = spacc_ablk_decrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + }, + .cra_init = spacc_ablk_cra_init, + .cra_exit = spacc_ablk_cra_exit, + }, + }, + { + .key_offs = DES_BLOCK_SIZE, + .iv_offs = 0, + .ctrl_default = SPA_CTRL_CIPH_ALG_DES | SPA_CTRL_CIPH_MODE_CBC, + .alg = { + .cra_name = "cbc(des3_ede)", + .cra_driver_name = "cbc-des3-ede-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = DES3_EDE_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_ablk_ctx), + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_ablkcipher = { + .setkey = spacc_des_setkey, + .encrypt = spacc_ablk_encrypt, + .decrypt = spacc_ablk_decrypt, + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + .ivsize = DES3_EDE_BLOCK_SIZE, + }, + .cra_init = spacc_ablk_cra_init, + .cra_exit = spacc_ablk_cra_exit, + }, + }, + { + .key_offs = DES_BLOCK_SIZE, + .iv_offs = 0, + .ctrl_default = SPA_CTRL_CIPH_ALG_DES | SPA_CTRL_CIPH_MODE_ECB, + .alg = { + .cra_name = "ecb(des3_ede)", + .cra_driver_name = "ecb-des3-ede-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = DES3_EDE_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_ablk_ctx), + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_ablkcipher = { + .setkey = spacc_des_setkey, + .encrypt = spacc_ablk_encrypt, + .decrypt = spacc_ablk_decrypt, + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + }, + .cra_init = spacc_ablk_cra_init, + .cra_exit = spacc_ablk_cra_exit, + }, + }, + { + .ctrl_default = SPA_CTRL_CIPH_ALG_AES | SPA_CTRL_CIPH_MODE_CBC | + SPA_CTRL_HASH_ALG_SHA | SPA_CTRL_HASH_MODE_HMAC, + .key_offs = 0, + .iv_offs = AES_MAX_KEY_SIZE, + .alg = { + .cra_name = "authenc(hmac(sha1),cbc(aes))", + .cra_driver_name = "authenc-hmac-sha1-cbc-aes-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_aead_ctx), + .cra_type = &crypto_aead_type, + .cra_module = THIS_MODULE, + .cra_aead = { + .setkey = spacc_aead_setkey, + .setauthsize = spacc_aead_setauthsize, + .encrypt = spacc_aead_encrypt, + .decrypt = spacc_aead_decrypt, + .givencrypt = spacc_aead_givencrypt, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = SHA1_DIGEST_SIZE, + }, + .cra_init = spacc_aead_cra_init, + .cra_exit = spacc_aead_cra_exit, + }, + }, + { + .ctrl_default = SPA_CTRL_CIPH_ALG_AES | SPA_CTRL_CIPH_MODE_CBC | + SPA_CTRL_HASH_ALG_SHA256 | + SPA_CTRL_HASH_MODE_HMAC, + .key_offs = 0, + .iv_offs = AES_MAX_KEY_SIZE, + .alg = { + .cra_name = "authenc(hmac(sha256),cbc(aes))", + .cra_driver_name = "authenc-hmac-sha256-cbc-aes-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_aead_ctx), + .cra_type = &crypto_aead_type, + .cra_module = THIS_MODULE, + .cra_aead = { + .setkey = spacc_aead_setkey, + .setauthsize = spacc_aead_setauthsize, + .encrypt = spacc_aead_encrypt, + .decrypt = spacc_aead_decrypt, + .givencrypt = spacc_aead_givencrypt, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = SHA256_DIGEST_SIZE, + }, + .cra_init = spacc_aead_cra_init, + .cra_exit = spacc_aead_cra_exit, + }, + }, + { + .key_offs = 0, + .iv_offs = AES_MAX_KEY_SIZE, + .ctrl_default = SPA_CTRL_CIPH_ALG_AES | SPA_CTRL_CIPH_MODE_CBC | + SPA_CTRL_HASH_ALG_MD5 | SPA_CTRL_HASH_MODE_HMAC, + .alg = { + .cra_name = "authenc(hmac(md5),cbc(aes))", + .cra_driver_name = "authenc-hmac-md5-cbc-aes-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_aead_ctx), + .cra_type = &crypto_aead_type, + .cra_module = THIS_MODULE, + .cra_aead = { + .setkey = spacc_aead_setkey, + .setauthsize = spacc_aead_setauthsize, + .encrypt = spacc_aead_encrypt, + .decrypt = spacc_aead_decrypt, + .givencrypt = spacc_aead_givencrypt, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = MD5_DIGEST_SIZE, + }, + .cra_init = spacc_aead_cra_init, + .cra_exit = spacc_aead_cra_exit, + }, + }, + { + .key_offs = DES_BLOCK_SIZE, + .iv_offs = 0, + .ctrl_default = SPA_CTRL_CIPH_ALG_DES | SPA_CTRL_CIPH_MODE_CBC | + SPA_CTRL_HASH_ALG_SHA | SPA_CTRL_HASH_MODE_HMAC, + .alg = { + .cra_name = "authenc(hmac(sha1),cbc(des3_ede))", + .cra_driver_name = "authenc-hmac-sha1-cbc-3des-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, + .cra_blocksize = DES3_EDE_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_aead_ctx), + .cra_type = &crypto_aead_type, + .cra_module = THIS_MODULE, + .cra_aead = { + .setkey = spacc_aead_setkey, + .setauthsize = spacc_aead_setauthsize, + .encrypt = spacc_aead_encrypt, + .decrypt = spacc_aead_decrypt, + .givencrypt = spacc_aead_givencrypt, + .ivsize = DES3_EDE_BLOCK_SIZE, + .maxauthsize = SHA1_DIGEST_SIZE, + }, + .cra_init = spacc_aead_cra_init, + .cra_exit = spacc_aead_cra_exit, + }, + }, + { + .key_offs = DES_BLOCK_SIZE, + .iv_offs = 0, + .ctrl_default = SPA_CTRL_CIPH_ALG_AES | SPA_CTRL_CIPH_MODE_CBC | + SPA_CTRL_HASH_ALG_SHA256 | + SPA_CTRL_HASH_MODE_HMAC, + .alg = { + .cra_name = "authenc(hmac(sha256),cbc(des3_ede))", + .cra_driver_name = "authenc-hmac-sha256-cbc-3des-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, + .cra_blocksize = DES3_EDE_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_aead_ctx), + .cra_type = &crypto_aead_type, + .cra_module = THIS_MODULE, + .cra_aead = { + .setkey = spacc_aead_setkey, + .setauthsize = spacc_aead_setauthsize, + .encrypt = spacc_aead_encrypt, + .decrypt = spacc_aead_decrypt, + .givencrypt = spacc_aead_givencrypt, + .ivsize = DES3_EDE_BLOCK_SIZE, + .maxauthsize = SHA256_DIGEST_SIZE, + }, + .cra_init = spacc_aead_cra_init, + .cra_exit = spacc_aead_cra_exit, + }, + }, + { + .key_offs = DES_BLOCK_SIZE, + .iv_offs = 0, + .ctrl_default = SPA_CTRL_CIPH_ALG_DES | SPA_CTRL_CIPH_MODE_CBC | + SPA_CTRL_HASH_ALG_MD5 | SPA_CTRL_HASH_MODE_HMAC, + .alg = { + .cra_name = "authenc(hmac(md5),cbc(des3_ede))", + .cra_driver_name = "authenc-hmac-md5-cbc-3des-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, + .cra_blocksize = DES3_EDE_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct spacc_aead_ctx), + .cra_type = &crypto_aead_type, + .cra_module = THIS_MODULE, + .cra_aead = { + .setkey = spacc_aead_setkey, + .setauthsize = spacc_aead_setauthsize, + .encrypt = spacc_aead_encrypt, + .decrypt = spacc_aead_decrypt, + .givencrypt = spacc_aead_givencrypt, + .ivsize = DES3_EDE_BLOCK_SIZE, + .maxauthsize = MD5_DIGEST_SIZE, + }, + .cra_init = spacc_aead_cra_init, + .cra_exit = spacc_aead_cra_exit, + }, + }, +}; + +static struct spacc_alg l2_engine_algs[] = { + { + .key_offs = 0, + .iv_offs = SPACC_CRYPTO_KASUMI_F8_KEY_LEN, + .ctrl_default = SPA_CTRL_CIPH_ALG_KASUMI | + SPA_CTRL_CIPH_MODE_F8, + .alg = { + .cra_name = "f8(kasumi)", + .cra_driver_name = "f8-kasumi-picoxcell", + .cra_priority = SPACC_CRYPTO_ALG_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_GIVCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = 8, + .cra_ctxsize = sizeof(struct spacc_ablk_ctx), + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_ablkcipher = { + .setkey = spacc_kasumi_f8_setkey, + .encrypt = spacc_ablk_encrypt, + .decrypt = spacc_ablk_decrypt, + .min_keysize = 16, + .max_keysize = 16, + .ivsize = 8, + }, + .cra_init = spacc_ablk_cra_init, + .cra_exit = spacc_ablk_cra_exit, + }, + }, +}; + +static int __devinit spacc_probe(struct platform_device *pdev, + unsigned max_ctxs, size_t cipher_pg_sz, + size_t hash_pg_sz, size_t fifo_sz, + struct spacc_alg *algs, size_t num_algs) +{ + int i, err, ret = -EINVAL; + struct resource *mem, *irq; + struct spacc_engine *engine = devm_kzalloc(&pdev->dev, sizeof(*engine), + GFP_KERNEL); + if (!engine) + return -ENOMEM; + + engine->max_ctxs = max_ctxs; + engine->cipher_pg_sz = cipher_pg_sz; + engine->hash_pg_sz = hash_pg_sz; + engine->fifo_sz = fifo_sz; + engine->algs = algs; + engine->num_algs = num_algs; + engine->name = dev_name(&pdev->dev); + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!mem || !irq) { + dev_err(&pdev->dev, "no memory/irq resource for engine\n"); + return -ENXIO; + } + + if (!devm_request_mem_region(&pdev->dev, mem->start, resource_size(mem), + engine->name)) + return -ENOMEM; + + engine->regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem)); + if (!engine->regs) { + dev_err(&pdev->dev, "memory map failed\n"); + return -ENOMEM; + } + + if (devm_request_irq(&pdev->dev, irq->start, spacc_spacc_irq, 0, + engine->name, engine)) { + dev_err(engine->dev, "failed to request IRQ\n"); + return -EBUSY; + } + + engine->dev = &pdev->dev; + engine->cipher_ctx_base = engine->regs + SPA_CIPH_KEY_BASE_REG_OFFSET; + engine->hash_key_base = engine->regs + SPA_HASH_KEY_BASE_REG_OFFSET; + + engine->req_pool = dmam_pool_create(engine->name, engine->dev, + MAX_DDT_LEN * sizeof(struct spacc_ddt), 8, SZ_64K); + if (!engine->req_pool) + return -ENOMEM; + + spin_lock_init(&engine->hw_lock); + + engine->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(engine->clk)) { + dev_info(&pdev->dev, "clk unavailable\n"); + device_remove_file(&pdev->dev, &dev_attr_stat_irq_thresh); + return PTR_ERR(engine->clk); + } + + if (clk_enable(engine->clk)) { + dev_info(&pdev->dev, "unable to enable clk\n"); + clk_put(engine->clk); + return -EIO; + } + + err = device_create_file(&pdev->dev, &dev_attr_stat_irq_thresh); + if (err) { + clk_disable(engine->clk); + clk_put(engine->clk); + return err; + } + + + /* + * Use an IRQ threshold of 50% as a default. This seems to be a + * reasonable trade off of latency against throughput but can be + * changed at runtime. + */ + engine->stat_irq_thresh = (engine->fifo_sz / 2); + + /* + * Configure the interrupts. We only use the STAT_CNT interrupt as we + * only submit a new packet for processing when we complete another in + * the queue. This minimizes time spent in the interrupt handler. + */ + writel(engine->stat_irq_thresh << SPA_IRQ_CTRL_STAT_CNT_OFFSET, + engine->regs + SPA_IRQ_CTRL_REG_OFFSET); + writel(SPA_IRQ_EN_STAT_EN | SPA_IRQ_EN_GLBL_EN, + engine->regs + SPA_IRQ_EN_REG_OFFSET); + + setup_timer(&engine->packet_timeout, spacc_packet_timeout, + (unsigned long)engine); + + INIT_LIST_HEAD(&engine->pending); + INIT_LIST_HEAD(&engine->completed); + INIT_LIST_HEAD(&engine->in_progress); + engine->in_flight = 0; + tasklet_init(&engine->complete, spacc_spacc_complete, + (unsigned long)engine); + + platform_set_drvdata(pdev, engine); + + INIT_LIST_HEAD(&engine->registered_algs); + for (i = 0; i < engine->num_algs; ++i) { + engine->algs[i].engine = engine; + err = crypto_register_alg(&engine->algs[i].alg); + if (!err) { + list_add_tail(&engine->algs[i].entry, + &engine->registered_algs); + ret = 0; + } + if (err) + dev_err(engine->dev, "failed to register alg \"%s\"\n", + engine->algs[i].alg.cra_name); + else + dev_dbg(engine->dev, "registered alg \"%s\"\n", + engine->algs[i].alg.cra_name); + } + + return ret; +} + +static int __devexit spacc_remove(struct platform_device *pdev) +{ + struct spacc_alg *alg, *next; + struct spacc_engine *engine = platform_get_drvdata(pdev); + + del_timer_sync(&engine->packet_timeout); + device_remove_file(&pdev->dev, &dev_attr_stat_irq_thresh); + + list_for_each_entry_safe(alg, next, &engine->registered_algs, entry) { + list_del(&alg->entry); + crypto_unregister_alg(&alg->alg); + } + + clk_disable(engine->clk); + clk_put(engine->clk); + + return 0; +} + +static int __devinit ipsec_probe(struct platform_device *pdev) +{ + return spacc_probe(pdev, SPACC_CRYPTO_IPSEC_MAX_CTXS, + SPACC_CRYPTO_IPSEC_CIPHER_PG_SZ, + SPACC_CRYPTO_IPSEC_HASH_PG_SZ, + SPACC_CRYPTO_IPSEC_FIFO_SZ, ipsec_engine_algs, + ARRAY_SIZE(ipsec_engine_algs)); +} + +static struct platform_driver ipsec_driver = { + .probe = ipsec_probe, + .remove = __devexit_p(spacc_remove), + .driver = { + .name = "picoxcell-ipsec", +#ifdef CONFIG_PM + .pm = &spacc_pm_ops, +#endif /* CONFIG_PM */ + }, +}; + +static int __devinit l2_probe(struct platform_device *pdev) +{ + return spacc_probe(pdev, SPACC_CRYPTO_L2_MAX_CTXS, + SPACC_CRYPTO_L2_CIPHER_PG_SZ, + SPACC_CRYPTO_L2_HASH_PG_SZ, SPACC_CRYPTO_L2_FIFO_SZ, + l2_engine_algs, ARRAY_SIZE(l2_engine_algs)); +} + +static struct platform_driver l2_driver = { + .probe = l2_probe, + .remove = __devexit_p(spacc_remove), + .driver = { + .name = "picoxcell-l2", +#ifdef CONFIG_PM + .pm = &spacc_pm_ops, +#endif /* CONFIG_PM */ + }, +}; + +static int __init spacc_init(void) +{ + int ret = platform_driver_register(&ipsec_driver); + if (ret) { + pr_err("failed to register ipsec spacc driver"); + goto out; + } + + ret = platform_driver_register(&l2_driver); + if (ret) { + pr_err("failed to register l2 spacc driver"); + goto l2_failed; + } + + return 0; + +l2_failed: + platform_driver_unregister(&ipsec_driver); +out: + return ret; +} +module_init(spacc_init); + +static void __exit spacc_exit(void) +{ + platform_driver_unregister(&ipsec_driver); + platform_driver_unregister(&l2_driver); +} +module_exit(spacc_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jamie Iles"); diff --git a/drivers/crypto/picoxcell_crypto_regs.h b/drivers/crypto/picoxcell_crypto_regs.h new file mode 100644 index 0000000..af93442 --- /dev/null +++ b/drivers/crypto/picoxcell_crypto_regs.h @@ -0,0 +1,128 @@ +/* + * Copyright (c) 2010 Picochip Ltd., Jamie Iles + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef __PICOXCELL_CRYPTO_REGS_H__ +#define __PICOXCELL_CRYPTO_REGS_H__ + +#define SPA_STATUS_OK 0 +#define SPA_STATUS_ICV_FAIL 1 +#define SPA_STATUS_MEMORY_ERROR 2 +#define SPA_STATUS_BLOCK_ERROR 3 + +#define SPA_IRQ_CTRL_STAT_CNT_OFFSET 16 +#define SPA_IRQ_STAT_STAT_MASK (1 << 4) +#define SPA_FIFO_STAT_STAT_OFFSET 16 +#define SPA_FIFO_STAT_STAT_CNT_MASK (0x3F << SPA_FIFO_STAT_STAT_OFFSET) +#define SPA_STATUS_RES_CODE_OFFSET 24 +#define SPA_STATUS_RES_CODE_MASK (0x3 << SPA_STATUS_RES_CODE_OFFSET) +#define SPA_KEY_SZ_CTX_INDEX_OFFSET 8 +#define SPA_KEY_SZ_CIPHER_OFFSET 31 + +#define SPA_IRQ_EN_REG_OFFSET 0x00000000 +#define SPA_IRQ_STAT_REG_OFFSET 0x00000004 +#define SPA_IRQ_CTRL_REG_OFFSET 0x00000008 +#define SPA_FIFO_STAT_REG_OFFSET 0x0000000C +#define SPA_SDMA_BRST_SZ_REG_OFFSET 0x00000010 +#define SPA_SRC_PTR_REG_OFFSET 0x00000020 +#define SPA_DST_PTR_REG_OFFSET 0x00000024 +#define SPA_OFFSET_REG_OFFSET 0x00000028 +#define SPA_AAD_LEN_REG_OFFSET 0x0000002C +#define SPA_PROC_LEN_REG_OFFSET 0x00000030 +#define SPA_ICV_LEN_REG_OFFSET 0x00000034 +#define SPA_ICV_OFFSET_REG_OFFSET 0x00000038 +#define SPA_SW_CTRL_REG_OFFSET 0x0000003C +#define SPA_CTRL_REG_OFFSET 0x00000040 +#define SPA_AUX_INFO_REG_OFFSET 0x0000004C +#define SPA_STAT_POP_REG_OFFSET 0x00000050 +#define SPA_STATUS_REG_OFFSET 0x00000054 +#define SPA_KEY_SZ_REG_OFFSET 0x00000100 +#define SPA_CIPH_KEY_BASE_REG_OFFSET 0x00004000 +#define SPA_HASH_KEY_BASE_REG_OFFSET 0x00008000 +#define SPA_RC4_CTX_BASE_REG_OFFSET 0x00020000 + +#define SPA_IRQ_EN_REG_RESET 0x00000000 +#define SPA_IRQ_CTRL_REG_RESET 0x00000000 +#define SPA_FIFO_STAT_REG_RESET 0x00000000 +#define SPA_SDMA_BRST_SZ_REG_RESET 0x00000000 +#define SPA_SRC_PTR_REG_RESET 0x00000000 +#define SPA_DST_PTR_REG_RESET 0x00000000 +#define SPA_OFFSET_REG_RESET 0x00000000 +#define SPA_AAD_LEN_REG_RESET 0x00000000 +#define SPA_PROC_LEN_REG_RESET 0x00000000 +#define SPA_ICV_LEN_REG_RESET 0x00000000 +#define SPA_ICV_OFFSET_REG_RESET 0x00000000 +#define SPA_SW_CTRL_REG_RESET 0x00000000 +#define SPA_CTRL_REG_RESET 0x00000000 +#define SPA_AUX_INFO_REG_RESET 0x00000000 +#define SPA_STAT_POP_REG_RESET 0x00000000 +#define SPA_STATUS_REG_RESET 0x00000000 +#define SPA_KEY_SZ_REG_RESET 0x00000000 + +#define SPA_CTRL_HASH_ALG_IDX 4 +#define SPA_CTRL_CIPH_MODE_IDX 8 +#define SPA_CTRL_HASH_MODE_IDX 12 +#define SPA_CTRL_CTX_IDX 16 +#define SPA_CTRL_ENCRYPT_IDX 24 +#define SPA_CTRL_AAD_COPY 25 +#define SPA_CTRL_ICV_PT 26 +#define SPA_CTRL_ICV_ENC 27 +#define SPA_CTRL_ICV_APPEND 28 +#define SPA_CTRL_KEY_EXP 29 + +#define SPA_KEY_SZ_CXT_IDX 8 +#define SPA_KEY_SZ_CIPHER_IDX 31 + +#define SPA_IRQ_EN_CMD0_EN (1 << 0) +#define SPA_IRQ_EN_STAT_EN (1 << 4) +#define SPA_IRQ_EN_GLBL_EN (1 << 31) + +#define SPA_CTRL_CIPH_ALG_NULL 0x00 +#define SPA_CTRL_CIPH_ALG_DES 0x01 +#define SPA_CTRL_CIPH_ALG_AES 0x02 +#define SPA_CTRL_CIPH_ALG_RC4 0x03 +#define SPA_CTRL_CIPH_ALG_MULTI2 0x04 +#define SPA_CTRL_CIPH_ALG_KASUMI 0x05 + +#define SPA_CTRL_HASH_ALG_NULL (0x00 << SPA_CTRL_HASH_ALG_IDX) +#define SPA_CTRL_HASH_ALG_MD5 (0x01 << SPA_CTRL_HASH_ALG_IDX) +#define SPA_CTRL_HASH_ALG_SHA (0x02 << SPA_CTRL_HASH_ALG_IDX) +#define SPA_CTRL_HASH_ALG_SHA224 (0x03 << SPA_CTRL_HASH_ALG_IDX) +#define SPA_CTRL_HASH_ALG_SHA256 (0x04 << SPA_CTRL_HASH_ALG_IDX) +#define SPA_CTRL_HASH_ALG_SHA384 (0x05 << SPA_CTRL_HASH_ALG_IDX) +#define SPA_CTRL_HASH_ALG_SHA512 (0x06 << SPA_CTRL_HASH_ALG_IDX) +#define SPA_CTRL_HASH_ALG_AESMAC (0x07 << SPA_CTRL_HASH_ALG_IDX) +#define SPA_CTRL_HASH_ALG_AESCMAC (0x08 << SPA_CTRL_HASH_ALG_IDX) +#define SPA_CTRL_HASH_ALG_KASF9 (0x09 << SPA_CTRL_HASH_ALG_IDX) + +#define SPA_CTRL_CIPH_MODE_NULL (0x00 << SPA_CTRL_CIPH_MODE_IDX) +#define SPA_CTRL_CIPH_MODE_ECB (0x00 << SPA_CTRL_CIPH_MODE_IDX) +#define SPA_CTRL_CIPH_MODE_CBC (0x01 << SPA_CTRL_CIPH_MODE_IDX) +#define SPA_CTRL_CIPH_MODE_CTR (0x02 << SPA_CTRL_CIPH_MODE_IDX) +#define SPA_CTRL_CIPH_MODE_CCM (0x03 << SPA_CTRL_CIPH_MODE_IDX) +#define SPA_CTRL_CIPH_MODE_GCM (0x05 << SPA_CTRL_CIPH_MODE_IDX) +#define SPA_CTRL_CIPH_MODE_OFB (0x07 << SPA_CTRL_CIPH_MODE_IDX) +#define SPA_CTRL_CIPH_MODE_CFB (0x08 << SPA_CTRL_CIPH_MODE_IDX) +#define SPA_CTRL_CIPH_MODE_F8 (0x09 << SPA_CTRL_CIPH_MODE_IDX) + +#define SPA_CTRL_HASH_MODE_RAW (0x00 << SPA_CTRL_HASH_MODE_IDX) +#define SPA_CTRL_HASH_MODE_SSLMAC (0x01 << SPA_CTRL_HASH_MODE_IDX) +#define SPA_CTRL_HASH_MODE_HMAC (0x02 << SPA_CTRL_HASH_MODE_IDX) + +#define SPA_FIFO_STAT_EMPTY (1 << 31) +#define SPA_FIFO_CMD_FULL (1 << 7) + +#endif /* __PICOXCELL_CRYPTO_REGS_H__ */ |