From: arm-kernel@ml.breakpoint.cc Subject: [PATCH] crypto: add support for Orion5X crypto engine Date: Thu, 11 Jun 2009 16:03:18 +0200 Message-ID: <1244728999-8103-3-git-send-email-arm-kernel@ml.breakpoint.cc> References: <1244728999-8103-1-git-send-email-arm-kernel@ml.breakpoint.cc> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: linux-crypto@vger.kernel.org, nico@cam.org, herbert@gondor.apana.org.au, Sebastian Andrzej Siewior To: linux-arm-kernel@lists.arm.linux.org.uk Return-path: Received: from Chamillionaire.breakpoint.cc ([85.10.199.196]:52135 "EHLO Chamillionaire.breakpoint.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751103AbZFKODU (ORCPT ); Thu, 11 Jun 2009 10:03:20 -0400 In-Reply-To: <1244728999-8103-1-git-send-email-arm-kernel@ml.breakpoint.cc> Sender: linux-crypto-owner@vger.kernel.org List-ID: =46rom: Sebastian Andrzej Siewior This adds support for Marvell's Cryptographic Engines and Security Accelerator (CESA) which can be found on a few SoC. Tested with dm-crypt. Signed-off-by: Sebastian Andrzej Siewior --- drivers/crypto/Kconfig | 13 + drivers/crypto/Makefile | 1 + drivers/crypto/mv_cesa.c | 610 ++++++++++++++++++++++++++++++++++++++= ++++++++ drivers/crypto/mv_cesa.h | 120 +++++++++ 4 files changed, 744 insertions(+), 0 deletions(-) create mode 100644 drivers/crypto/mv_cesa.c create mode 100644 drivers/crypto/mv_cesa.h diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index 01afd75..0320187 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -157,6 +157,19 @@ config S390_PRNG ANSI X9.17 standard. The PRNG is usable via the char device /dev/prandom. =20 +config CRYPTO_DEV_MV_CESA + tristate "Marvell's Cryptographic Engine" + depends on PLAT_ORION + select CRYPTO_ALGAPI + select CRYPTO_AES + select CRYPTO_BLKCIPHER2 + help + This driver allows you utilize the Cryptographic Engines and Securi= ty + Accelerator (CESA) which can be found on certain SoC like QNAP's + TS-209. + + Currently the driver supports AES in ECB and CBC mode without DMA. + config CRYPTO_DEV_HIFN_795X tristate "Driver HIFN 795x crypto accelerator chips" select CRYPTO_DES diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile index 9bf4a2b..6ffcb3f 100644 --- a/drivers/crypto/Makefile +++ b/drivers/crypto/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) +=3D padlock-aes.o obj-$(CONFIG_CRYPTO_DEV_PADLOCK_SHA) +=3D padlock-sha.o obj-$(CONFIG_CRYPTO_DEV_GEODE) +=3D geode-aes.o obj-$(CONFIG_CRYPTO_DEV_HIFN_795X) +=3D hifn_795x.o +obj-$(CONFIG_CRYPTO_DEV_MV_CESA) +=3D mv_cesa.o obj-$(CONFIG_CRYPTO_DEV_TALITOS) +=3D talitos.o obj-$(CONFIG_CRYPTO_DEV_IXP4XX) +=3D ixp4xx_crypto.o obj-$(CONFIG_CRYPTO_DEV_PPC4XX) +=3D amcc/ diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c new file mode 100644 index 0000000..22ea1b1 --- /dev/null +++ b/drivers/crypto/mv_cesa.c @@ -0,0 +1,610 @@ +/* + * Support for Marvell's crypto engine which can be found on some Orio= n5X + * boards. + * + * Author: Sebastian Andrzej Siewior < sebastian at breakpoint dot cc = > + * License: GPL + * + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include "mv_cesa.h" +/* + * STM: + * /---------------------------------------\ + * | | request complete + * \./ | + * IDLE -> new request -> BUSY -> done -> DEQUEUE + * /=C2=B0\ | + * | | more scatter entries + * \________________/ + */ +enum engine_status { + ENGINE_IDLE, + ENGINE_BUSY, + ENGINE_W_DEQUEUE, +}; + +/** + * struct req_progress - used for every crypt request + * @src_sg_it: sg iterator for src + * @dst_sg_it: sg iterator for dst + * @sg_src_left: bytes left in src to process (scatter list) + * @src_start: offset to add to src start position (scatter list) + * @crypt_len: length of current crypt process + * @sg_dst_left: bytes left dst to process in this scatter list + * @dst_start: offset to add to dst start position (scatter list) + * @total_req_bytes: total number of bytes processed (request). + * + * sg helper are used to iterate over the scatterlist. Since the size = of the + * SRAM may be less than the scatter size, this struct struct is used = to keep + * track of progress within current scatterlist. + */ +struct req_progress { + struct sg_mapping_iter src_sg_it; + struct sg_mapping_iter dst_sg_it; + + /* src mostly */ + int sg_src_left; + int src_start; + int crypt_len; + /* dst mostly */ + int sg_dst_left; + int dst_start; + int total_req_bytes; +}; + +struct crypto_priv { + void __iomem *reg; + void __iomem *sram; + int irq; + struct task_struct *queue_th; + + /* the lock protects queue and eng_st */ + spinlock_t lock; + struct crypto_queue queue; + enum engine_status eng_st; + struct ablkcipher_request *cur_req; + struct req_progress p; +}; + +static struct crypto_priv *cpg; + +struct mv_ctx { + u8 aes_enc_key[AES_KEY_LEN]; + u32 aes_dec_key[8]; + int key_len; + u32 need_calc_aes_dkey; +}; + +enum crypto_op { + COP_AES_ECB, + COP_AES_CBC, +}; + +struct mv_req_ctx { + enum crypto_op op; + int decrypt; +}; + +static void compute_aes_dec_key(struct mv_ctx *ctx) +{ + struct crypto_aes_ctx gen_aes_key; + int key_pos; + + if (!ctx->need_calc_aes_dkey) + return; + + crypto_aes_expand_key(&gen_aes_key, ctx->aes_enc_key, ctx->key_len); + + key_pos =3D ctx->key_len + 24; + memcpy(ctx->aes_dec_key, &gen_aes_key.key_enc[key_pos], 4 * 4); + switch (ctx->key_len) { + case AES_KEYSIZE_256: + key_pos -=3D 2; + /* fall */ + case AES_KEYSIZE_192: + key_pos -=3D 2; + memcpy(&ctx->aes_dec_key[4], &gen_aes_key.key_enc[key_pos], + 4 * 4); + break; + } + ctx->need_calc_aes_dkey =3D 0; +} + +static int mv_setkey_aes(struct crypto_ablkcipher *cipher, const u8 *k= ey, + unsigned int len) +{ + struct crypto_tfm *tfm =3D crypto_ablkcipher_tfm(cipher); + struct mv_ctx *ctx =3D crypto_tfm_ctx(tfm); + + switch (len) { + case AES_KEYSIZE_128: + case AES_KEYSIZE_192: + case AES_KEYSIZE_256: + break; + default: + crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; + } + ctx->key_len =3D len; + ctx->need_calc_aes_dkey =3D 1; + + memcpy(ctx->aes_enc_key, key, AES_KEY_LEN); + return 0; +} + +static void setup_data_in(struct ablkcipher_request *req) +{ + int ret; + void *buf; + + if (!cpg->p.sg_src_left) { + ret =3D sg_miter_next(&cpg->p.src_sg_it); + BUG_ON(!ret); + cpg->p.sg_src_left =3D cpg->p.src_sg_it.length; + cpg->p.src_start =3D 0; + } + + cpg->p.crypt_len =3D min(cpg->p.sg_src_left, MAX_REQ_SIZE); + + buf =3D cpg->p.src_sg_it.addr; + buf +=3D cpg->p.src_start; + + memcpy(cpg->sram + SRAM_DATA_IN_START, buf, cpg->p.crypt_len); + + cpg->p.sg_src_left -=3D cpg->p.crypt_len; + cpg->p.src_start +=3D cpg->p.crypt_len; +} + +static void mv_process_current_q(int first_block) +{ + struct ablkcipher_request *req =3D cpg->cur_req; + struct mv_ctx *ctx =3D crypto_tfm_ctx(req->base.tfm); + struct mv_req_ctx *req_ctx =3D ablkcipher_request_ctx(req); + struct sec_accel_config op; + + switch (req_ctx->op) { + case COP_AES_ECB: + op.config =3D CFG_OP_CRYPT_ONLY | CFG_ENCM_AES | CFG_ENC_MODE_ECB; + break; + case COP_AES_CBC: + op.config =3D CFG_OP_CRYPT_ONLY | CFG_ENCM_AES | CFG_ENC_MODE_CBC; + op.enc_iv =3D ENC_IV_POINT(SRAM_DATA_IV) | + ENC_IV_BUF_POINT(SRAM_DATA_IV_BUF); + if (first_block) + memcpy(cpg->sram + SRAM_DATA_IV, req->info, 16); + break; + } + if (req_ctx->decrypt) { + op.config |=3D CFG_DIR_DEC; + memcpy(cpg->sram + SRAM_DATA_KEY_P, ctx->aes_dec_key, + AES_KEY_LEN); + } else { + op.config |=3D CFG_DIR_ENC; + memcpy(cpg->sram + SRAM_DATA_KEY_P, ctx->aes_enc_key, + AES_KEY_LEN); + } + + switch (ctx->key_len) { + case AES_KEYSIZE_128: + op.config |=3D CFG_AES_LEN_128; + break; + case AES_KEYSIZE_192: + op.config |=3D CFG_AES_LEN_192; + break; + case AES_KEYSIZE_256: + op.config |=3D CFG_AES_LEN_256; + break; + } + op.enc_p =3D ENC_P_SRC(SRAM_DATA_IN_START) | + ENC_P_DST(SRAM_DATA_OUT_START); + op.enc_key_p =3D SRAM_DATA_KEY_P; + + setup_data_in(req); + op.enc_len =3D cpg->p.crypt_len; + memcpy(cpg->sram + SRAM_CONFIG, &op, + sizeof(struct sec_accel_config)); + + writel(SRAM_CONFIG, cpg->reg + SEC_ACCEL_DESC_P0); + /* GO */ + writel(SEC_CMD_EN_SEC_ACCL0, cpg->reg + SEC_ACCEL_CMD); + + /* + * XXX: add timer if the interrupt does not occur for some mystery + * reason + */ +} + +static void mv_crypto_algo_completion(void) +{ + struct ablkcipher_request *req =3D cpg->cur_req; + struct mv_req_ctx *req_ctx =3D ablkcipher_request_ctx(req); + + if (req_ctx->op !=3D COP_AES_CBC) + return ; + + memcpy(req->info, cpg->sram + SRAM_DATA_IV_BUF, 16); +} + +static void dequeue_complete_req(void) +{ + struct ablkcipher_request *req =3D cpg->cur_req; + void *buf; + int ret; + + cpg->p.total_req_bytes +=3D cpg->p.crypt_len; + do { + int dst_copy; + + if (!cpg->p.sg_dst_left) { + ret =3D sg_miter_next(&cpg->p.dst_sg_it); + BUG_ON(!ret); + cpg->p.sg_dst_left =3D cpg->p.dst_sg_it.length; + cpg->p.dst_start =3D 0; + } + + buf =3D cpg->p.dst_sg_it.addr; + buf +=3D cpg->p.dst_start; + + dst_copy =3D min(cpg->p.crypt_len, cpg->p.sg_dst_left); + + memcpy(buf, cpg->sram + SRAM_DATA_OUT_START, dst_copy); + /* + * XXX This is a temporary hack to flush data from cache back + * into phys ram so user space sees correct data. This goes + * away as soon as DMA support is added to this driver + */ + dmac_flush_range(buf, buf + dst_copy); + + cpg->p.sg_dst_left -=3D dst_copy; + cpg->p.crypt_len -=3D dst_copy; + cpg->p.dst_start +=3D dst_copy; + } while (cpg->p.crypt_len > 0); + + BUG_ON(cpg->eng_st !=3D ENGINE_W_DEQUEUE); + if (cpg->p.total_req_bytes < req->nbytes) { + /* process next scatter list entry */ + cpg->eng_st =3D ENGINE_BUSY; + mv_process_current_q(0); + } else { + sg_miter_stop(&cpg->p.src_sg_it); + sg_miter_stop(&cpg->p.dst_sg_it); + mv_crypto_algo_completion(); + cpg->eng_st =3D ENGINE_IDLE; + req->base.complete(&req->base, 0); + } +} + +static int count_sgs(struct scatterlist *sl, unsigned int total_bytes) +{ + int i =3D 0; + + do { + total_bytes -=3D sl[i].length; + i++; + + } while (total_bytes > 0); + + return i; +} + +static void mv_enqueue_new_req(struct ablkcipher_request *req) +{ + int num_sgs; + + cpg->cur_req =3D req; + memset(&cpg->p, 0, sizeof(struct req_progress)); + + num_sgs =3D count_sgs(req->src, req->nbytes); + sg_miter_start(&cpg->p.src_sg_it, req->src, num_sgs, 0); + + num_sgs =3D count_sgs(req->dst, req->nbytes); + sg_miter_start(&cpg->p.dst_sg_it, req->dst, num_sgs, 0); + mv_process_current_q(1); +} + +static int queue_manag(void *data) +{ + cpg->eng_st =3D ENGINE_IDLE; + do { + struct ablkcipher_request *req; + struct crypto_async_request *async_req =3D NULL; + struct crypto_async_request *backlog; + + __set_current_state(TASK_INTERRUPTIBLE); + + if (cpg->eng_st =3D=3D ENGINE_W_DEQUEUE) + dequeue_complete_req(); + + spin_lock_irq(&cpg->lock); + if (cpg->eng_st =3D=3D ENGINE_IDLE) { + backlog =3D crypto_get_backlog(&cpg->queue); + async_req =3D crypto_dequeue_request(&cpg->queue); + if (async_req) { + BUG_ON(cpg->eng_st !=3D ENGINE_IDLE); + cpg->eng_st =3D ENGINE_BUSY; + } + } + spin_unlock_irq(&cpg->lock); + + if (backlog) { + backlog->complete(backlog, -EINPROGRESS); + backlog =3D NULL; + } + + if (async_req) { + req =3D container_of(async_req, + struct ablkcipher_request, base); + mv_enqueue_new_req(req); + async_req =3D NULL; + } + + schedule(); + + } while (!kthread_should_stop()); + return 0; +} + +static int mv_handle_req(struct ablkcipher_request *req) +{ + unsigned long flags; + int ret; + + spin_lock_irqsave(&cpg->lock, flags); + ret =3D ablkcipher_enqueue_request(&cpg->queue, req); + spin_unlock_irqrestore(&cpg->lock, flags); + wake_up_process(cpg->queue_th); + return ret; +} + +static int mv_enc_aes_ecb(struct ablkcipher_request *req) +{ + struct mv_req_ctx *req_ctx =3D ablkcipher_request_ctx(req); + + req_ctx->op =3D COP_AES_ECB; + req_ctx->decrypt =3D 0; + + return mv_handle_req(req); +} + +static int mv_dec_aes_ecb(struct ablkcipher_request *req) +{ + struct mv_ctx *ctx =3D crypto_tfm_ctx(req->base.tfm); + struct mv_req_ctx *req_ctx =3D ablkcipher_request_ctx(req); + + req_ctx->op =3D COP_AES_ECB; + req_ctx->decrypt =3D 1; + + compute_aes_dec_key(ctx); + return mv_handle_req(req); +} + +static int mv_enc_aes_cbc(struct ablkcipher_request *req) +{ + struct mv_req_ctx *req_ctx =3D ablkcipher_request_ctx(req); + + req_ctx->op =3D COP_AES_CBC; + req_ctx->decrypt =3D 0; + + return mv_handle_req(req); +} + +static int mv_dec_aes_cbc(struct ablkcipher_request *req) +{ + struct mv_ctx *ctx =3D crypto_tfm_ctx(req->base.tfm); + struct mv_req_ctx *req_ctx =3D ablkcipher_request_ctx(req); + + req_ctx->op =3D COP_AES_CBC; + req_ctx->decrypt =3D 1; + + compute_aes_dec_key(ctx); + return mv_handle_req(req); +} + +static int mv_cra_init(struct crypto_tfm *tfm) +{ + tfm->crt_ablkcipher.reqsize =3D sizeof(struct mv_req_ctx); + return 0; +} + +irqreturn_t crypto_int(int irq, void *priv) +{ + u32 val; + + val =3D readl(cpg->reg + SEC_ACCEL_INT_STATUS); + if (!(val & SEC_INT_ACCEL0_DONE)) + return IRQ_NONE; + + val &=3D ~SEC_INT_ACCEL0_DONE; + writel(val, cpg->reg + FPGA_INT_STATUS); + writel(val, cpg->reg + SEC_ACCEL_INT_STATUS); + BUG_ON(cpg->eng_st !=3D ENGINE_BUSY); + cpg->eng_st =3D ENGINE_W_DEQUEUE; + wake_up_process(cpg->queue_th); + return IRQ_HANDLED; +} + +struct crypto_alg mv_aes_alg_ecb =3D { + .cra_name =3D "ecb(aes)", + .cra_driver_name =3D "mv-ecb-aes", + .cra_priority =3D 300, + .cra_flags =3D CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize =3D 16, + .cra_ctxsize =3D sizeof(struct mv_ctx), + .cra_alignmask =3D 0, + .cra_type =3D &crypto_ablkcipher_type, + .cra_module =3D THIS_MODULE, + .cra_init =3D mv_cra_init, + .cra_u =3D { + .ablkcipher =3D { + .min_keysize =3D AES_MIN_KEY_SIZE, + .max_keysize =3D AES_MAX_KEY_SIZE, + .setkey =3D mv_setkey_aes, + .encrypt =3D mv_enc_aes_ecb, + .decrypt =3D mv_dec_aes_ecb, + }, + }, +}; + +struct crypto_alg mv_aes_alg_cbc =3D { + .cra_name =3D "cbc(aes)", + .cra_driver_name =3D "mv-cbc-aes", + .cra_priority =3D 300, + .cra_flags =3D CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize =3D AES_BLOCK_SIZE, + .cra_ctxsize =3D sizeof(struct mv_ctx), + .cra_alignmask =3D 0, + .cra_type =3D &crypto_ablkcipher_type, + .cra_module =3D THIS_MODULE, + .cra_init =3D mv_cra_init, + .cra_u =3D { + .ablkcipher =3D { + .ivsize =3D AES_BLOCK_SIZE, + .min_keysize =3D AES_MIN_KEY_SIZE, + .max_keysize =3D AES_MAX_KEY_SIZE, + .setkey =3D mv_setkey_aes, + .encrypt =3D mv_enc_aes_cbc, + .decrypt =3D mv_dec_aes_cbc, + }, + }, +}; + +static int m_probe(struct platform_device *pdev) +{ + struct crypto_priv *cp; + struct resource *res; + int irq; + int ret; + + if (cpg) { + printk(KERN_ERR "Second crypto dev?\n"); + return -EEXIST; + } + + res =3D platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs"); + if (!res) + return -ENXIO; + + cp =3D kzalloc(sizeof(*cp), GFP_KERNEL); + if (!cp) + return -ENOMEM; + + spin_lock_init(&cp->lock); + crypto_init_queue(&cp->queue, 50); + cp->reg =3D ioremap(res->start, res->end - res->start + 1); + if (!cp->reg) { + ret =3D -ENOMEM; + goto err; + } + + res =3D platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram"); + if (!res) { + ret =3D -ENXIO; + goto err_unmap_reg; + } + + cp->sram =3D ioremap(res->start, res->end - res->start + 1); + if (!cp->sram) { + ret =3D -ENOMEM; + goto err_unmap_reg; + } + + irq =3D platform_get_irq(pdev, 0); + if (irq < 0 || irq =3D=3D NO_IRQ) { + ret =3D irq; + goto err_unmap_sram; + } + cp->irq =3D irq; + + platform_set_drvdata(pdev, cp); + cpg =3D cp; + + cp->queue_th =3D kthread_run(queue_manag, cp, "mv_crypto"); + if (IS_ERR(cp->queue_th)) { + ret =3D PTR_ERR(cp->queue_th); + goto err_thread; + } + + ret =3D request_irq(irq, crypto_int, IRQF_DISABLED, dev_name(&pdev->d= ev), + cp); + if (ret) + goto err_unmap_sram; + + writel(SEC_INT_ACCEL0_DONE, cpg->reg + SEC_ACCEL_INT_MASK); + writel(SEC_CFG_STOP_DIG_ERR, cpg->reg + SEC_ACCEL_CFG); + + ret =3D crypto_register_alg(&mv_aes_alg_ecb); + if (ret) + goto err_reg; + + ret =3D crypto_register_alg(&mv_aes_alg_cbc); + if (ret) + goto err_unreg_ecb; + return 0; +err_unreg_ecb: + crypto_unregister_alg(&mv_aes_alg_ecb); +err_thread: + free_irq(irq, cp); +err_reg: + kthread_stop(cp->queue_th); +err_unmap_sram: + iounmap(cp->sram); +err_unmap_reg: + iounmap(cp->reg); +err: + kfree(cp); + cpg =3D NULL; + platform_set_drvdata(pdev, NULL); + return ret; +} + +static int m_remove(struct platform_device *pdev) +{ + struct crypto_priv *cp =3D platform_get_drvdata(pdev); + + crypto_unregister_alg(&mv_aes_alg_ecb); + crypto_unregister_alg(&mv_aes_alg_cbc); + kthread_stop(cp->queue_th); + free_irq(cp->irq, cp); + memset(cp->sram, 0, 8 * 1024); + iounmap(cp->sram); + iounmap(cp->reg); + kfree(cp); + cpg =3D NULL; + return 0; +} + +static struct platform_driver marvell_crypto =3D { + .probe =3D m_probe, + .remove =3D m_remove, + .driver =3D { + .owner =3D THIS_MODULE, + .name =3D "mv,orion5x-crypto", + }, +}; + +static int __init crypto_init(void) +{ + return platform_driver_register(&marvell_crypto); +} +module_init(crypto_init); + +static void __exit crypto_exit(void) +{ + platform_driver_unregister(&marvell_crypto); +} +module_exit(crypto_exit); + +MODULE_AUTHOR("Sebastian Andrzej Siewior "); +MODULE_DESCRIPTION("Support for Marvell's cryptographic engine"); +MODULE_LICENSE("GPL"); diff --git a/drivers/crypto/mv_cesa.h b/drivers/crypto/mv_cesa.h new file mode 100644 index 0000000..7198be9 --- /dev/null +++ b/drivers/crypto/mv_cesa.h @@ -0,0 +1,120 @@ +#ifndef __MV_CRYPTO_H__ + +#define DIGEST_INITIAL_VAL_A 0xdd00 +#define DES_CMD_REG 0xdd58 + +#define SEC_ACCEL_CMD 0xde00 +#define SEC_CMD_EN_SEC_ACCL0 (1 << 0) +#define SEC_CMD_EN_SEC_ACCL1 (1 << 1) +#define SEC_CMD_DISABLE_SEC (1 << 2) + +#define SEC_ACCEL_DESC_P0 0xde04 +#define SEC_DESC_P0_PTR(x) (x) + +#define SEC_ACCEL_DESC_P1 0xde14 +#define SEC_DESC_P1_PTR(x) (x) + +#define SEC_ACCEL_CFG 0xde08 +#define SEC_CFG_STOP_DIG_ERR (1 << 0) +#define SEC_CFG_CH0_W_IDMA (1 << 7) +#define SEC_CFG_CH1_W_IDMA (1 << 8) +#define SEC_CFG_ACT_CH0_IDMA (1 << 9) +#define SEC_CFG_ACT_CH1_IDMA (1 << 10) + +#define SEC_ACCEL_STATUS 0xde0c +#define SEC_ST_ACT_0 (1 << 0) +#define SEC_ST_ACT_1 (1 << 1) + +/* + * FPGA_INT_STATUS looks like a FPGA leftover and is undocumented. I a= summe + * that it was part of an IRQ-controller in FPGA and someone forgot to= remove + * it while switching to the core and moving to SEC_ACCEL_INT_STATUS. + */ +#define FPGA_INT_STATUS 0xdd68 +#define SEC_ACCEL_INT_STATUS 0xde20 +#define SEC_INT_AUTH_DONE (1 << 0) +#define SEC_INT_DES_E_DONE (1 << 1) +#define SEC_INT_AES_E_DONE (1 << 2) +#define SEC_INT_AES_D_DONE (1 << 3) +#define SEC_INT_ENC_DONE (1 << 4) +#define SEC_INT_ACCEL0_DONE (1 << 5) +#define SEC_INT_ACCEL1_DONE (1 << 6) +#define SEC_INT_ACC0_IDMA_DONE (1 << 7) +#define SEC_INT_ACC1_IDMA_DONE (1 << 8) + +#define SEC_ACCEL_INT_MASK 0xde24 + +#define AES_KEY_LEN (8 * 4) + +struct sec_accel_config { + + u32 config; +#define CFG_OP_MAC_ONLY 0 +#define CFG_OP_CRYPT_ONLY 1 +#define CFG_OP_MAC_CRYPT 2 +#define CFG_OP_CRYPT_MAC 3 +#define CFG_MACM_MD5 (4 << 4) +#define CFG_MACM_SHA1 (5 << 4) +#define CFG_MACM_HMAC_MD5 (6 << 4) +#define CFG_MACM_HMAC_SHA1 (7 << 4) +#define CFG_ENCM_DES (1 << 8) +#define CFG_ENCM_3DES (2 << 8) +#define CFG_ENCM_AES (3 << 8) +#define CFG_DIR_ENC (0 << 12) +#define CFG_DIR_DEC (1 << 12) +#define CFG_ENC_MODE_ECB (0 << 16) +#define CFG_ENC_MODE_CBC (1 << 16) +#define CFG_3DES_EEE (0 << 20) +#define CFG_3DES_EDE (1 << 20) +#define CFG_AES_LEN_128 (0 << 24) +#define CFG_AES_LEN_192 (1 << 24) +#define CFG_AES_LEN_256 (2 << 24) + + u32 enc_p; +#define ENC_P_SRC(x) (x) +#define ENC_P_DST(x) ((x) << 16) + + u32 enc_len; +#define ENC_LEN(x) (x) + + u32 enc_key_p; +#define ENC_KEY_P(x) (x) + + u32 enc_iv; +#define ENC_IV_POINT(x) ((x) << 0) +#define ENC_IV_BUF_POINT(x) ((x) << 16) + + u32 mac_src_p; +#define MAC_SRC_DATA_P(x) (x) +#define MAC_SRC_TOTAL_LEN(x) ((x) << 16) + + u32 mac_digest; + u32 mac_iv; +}__attribute__ ((packed)); + /* + * /-----------\ 0 + * | ACCEL CFG | 4 * 8 + * |-----------| 0x20 + * | CRYPT KEY | 8 * 4 + * |-----------| 0x40 + * | IV IN | 4 * 4 + * |-----------| 0x40 (inplace) + * | IV BUF | 4 * 4 + * |-----------| 0x50 + * | DATA IN | 16 * x (max MAX_REQ_SIZE) + * |-----------| 0x50 (inplace operation) + * | DATA OUT | 16 * x (max MAX_REQ_SIZE) + * |-----------| 0x1f90 + * | nuttin | + * \-----------/ 0x2000 + */ +#define SRAM_CONFIG 0x00 +#define SRAM_DATA_KEY_P 0x20 +#define SRAM_DATA_IV 0x40 +#define SRAM_DATA_IV_BUF 0x40 +#define SRAM_DATA_IN_START 0x50 +#define SRAM_DATA_OUT_START 0x50 + +#define MAX_REQ_SIZE (8000) + +#endif --=20 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto"= in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html