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Signed-off-by: Kalyani Akula Acked-by: Michal Simek --- V5 Changes: - Moved firmware: xilinx: Add ZynqMP aes API for AES patch from 3/4 to 1/4 - This patch (1/4) is based on below commit id because of possible merge conflict commit 461011b1e1ab ("drivers: firmware: xilinx: Add support for feature check") - Added newlines in between at the start and end of zynqmp_pm_aes_engine function drivers/firmware/xilinx/zynqmp.c | 25 +++++++++++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 2 ++ 2 files changed, 27 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 0137bf3..20c084f 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -705,6 +705,30 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities, qos, ack, NULL); } +/** + * zynqmp_pm_aes - Access AES hardware to encrypt/decrypt the data using + * AES-GCM core. + * @address: Address of the AesParams structure. + * @out: Returned output value + * + * Return: Returns status, either success or error code. + */ +static int zynqmp_pm_aes_engine(const u64 address, u32 *out) +{ + u32 ret_payload[PAYLOAD_ARG_CNT]; + int ret; + + if (!out) + return -EINVAL; + + ret = zynqmp_pm_invoke_fn(PM_SECURE_AES, upper_32_bits(address), + lower_32_bits(address), + 0, 0, ret_payload); + *out = ret_payload[1]; + + return ret; +} + static const struct zynqmp_eemi_ops eemi_ops = { .get_api_version = zynqmp_pm_get_api_version, .get_chipid = zynqmp_pm_get_chipid, @@ -728,6 +752,7 @@ static int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities, .set_requirement = zynqmp_pm_set_requirement, .fpga_load = zynqmp_pm_fpga_load, .fpga_get_status = zynqmp_pm_fpga_get_status, + .aes = zynqmp_pm_aes_engine, }; /** diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index e72eccf..5455830 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -82,6 +82,7 @@ enum pm_api_id { PM_CLOCK_GETRATE, PM_CLOCK_SETPARENT, PM_CLOCK_GETPARENT, + PM_SECURE_AES = 47, PM_FEATURE_CHECK = 63, PM_API_MAX, }; @@ -313,6 +314,7 @@ struct zynqmp_eemi_ops { const u32 capabilities, const u32 qos, const enum zynqmp_pm_request_ack ack); + int (*aes)(const u64 address, u32 *out); }; int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1, From patchwork Tue Jan 28 06:18:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalyani Akula X-Patchwork-Id: 11353667 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3586E138C for ; Tue, 28 Jan 2020 06:19:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 095B22173E for ; Tue, 28 Jan 2020 06:19:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=xilinx.onmicrosoft.com header.i=@xilinx.onmicrosoft.com header.b="lkxMWKhG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725848AbgA1GTT (ORCPT ); Tue, 28 Jan 2020 01:19:19 -0500 Received: from mail-mw2nam12on2061.outbound.protection.outlook.com ([40.107.244.61]:39953 "EHLO NAM12-MW2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725776AbgA1GTT (ORCPT ); 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Signed-off-by: Kalyani Akula Reviewed-by: Rob Herring Acked-by: Michal Simek --- V6 Changes: - Updated SPDX-License-Identifier. V5 Changes: - Moved dt-bindings patch from 1/4 to 2/4 - Converted dt-bindings from .txt to .yaml format. .../bindings/crypto/xlnx,zynqmp-aes.yaml | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/crypto/xlnx,zynqmp-aes.yaml diff --git a/Documentation/devicetree/bindings/crypto/xlnx,zynqmp-aes.yaml b/Documentation/devicetree/bindings/crypto/xlnx,zynqmp-aes.yaml new file mode 100644 index 0000000..55dd6e3 --- /dev/null +++ b/Documentation/devicetree/bindings/crypto/xlnx,zynqmp-aes.yaml @@ -0,0 +1,37 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/crypto/xlnx,zynqmp-aes.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xilinx ZynqMP AES-GCM Hardware Accelerator Device Tree Bindings + +maintainers: + - Kalyani Akula + - Michal Simek + +description: | + The ZynqMP AES-GCM hardened cryptographic accelerator is used to + encrypt or decrypt the data with provided key and initialization vector. + +properties: + compatible: + const: xlnx,zynqmp-aes + +required: + - compatible + +additionalProperties: false + +examples: + - | + firmware { + zynqmp_firmware: zynqmp-firmware { + compatible = "xlnx,zynqmp-firmware"; + method = "smc"; + xlnx_aes: zynqmp-aes { + compatible = "xlnx,zynqmp-aes"; + }; + }; + }; +... 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MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 04537d4a-a330-468c-4ba2-08d7a3ba0527 X-MS-TrafficTypeDiagnostic: SN6PR02MB5550: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:765; X-Forefront-PRVS: 029651C7A1 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 3fZaTzHTtocCuctYH3CaeplLV9g4Yf44OO45j5dQTOxZc7TcK7Z8FgwbCPsq0yNbwm92y1g3KCbpYoaQbyRcZ0mj7CcJc4MndxSKuPdh1dufoLmFrJob/uU/cKRH5LGgLFXP4F7YF2AIO7S9Vt0iFTfFht6jmWLz0fEChF/l54IvFY7VoNjyWi8gsBV0iQtT6c8OS5UHelJzl6k8sQ7lBrHvsq1LJZX4ReqL7vzVrsgbdYJzlgI9l43WQpwSKm3AUAqk5EC3/O84kQkC7Are9SCJ8Los6wESs6pUzAgC+yfWKggm8vpRa5o3tX0pku2jWGPNuEPahcSfa0Pp38HjiXpxmW0veciV69u2kfPc74pILydpxCmIqvIZkBYlUriYcDLF/RUmvs4fe2dS7bayVtnOh+5VypsZVbqHc1Hns3m5siDmt3UvxwLCtgu8eZ0j X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Jan 2020 06:19:23.8437 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 04537d4a-a330-468c-4ba2-08d7a3ba0527 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.60.83];Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR02MB5550 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org This patch adds AES driver support for the Xilinx ZynqMP SoC. Signed-off-by: Mohan Marutirao Dhanawade Signed-off-by: Kalyani Akula Acked-by: Michal Simek --- V5 Changes: - Replaced ARCH_ZYNQMP with ZYNQMP_FIRMWARE in Kconfig - Removed extra new lines. - Moved crypto: Add Xilinx AES driver patch from 4/4 to 3/4. - Updated Signed-off-by sequence. V4 Changes : - Addressed review comments. V3 Changes : - Added software fallback in cases where Hardware doesn't have the capability to handle the request. - Removed use of global variable for storing the driver data. V2 Changes : - Converted RFC PATCH to PATCH - Removed ALG_SET_KEY_TYPE that was added to support keytype attribute. Taken using setkey interface. - Removed deprecated BLKCIPHER in Kconfig - Erased Key/IV from the buffer. - Renamed zynqmp-aes driver to zynqmp-aes-gcm. - Addressed few other review comments drivers/crypto/Kconfig | 12 + drivers/crypto/Makefile | 1 + drivers/crypto/xilinx/Makefile | 2 + drivers/crypto/xilinx/zynqmp-aes-gcm.c | 466 +++++++++++++++++++++++++++++++++ 4 files changed, 481 insertions(+) create mode 100644 drivers/crypto/xilinx/Makefile create mode 100644 drivers/crypto/xilinx/zynqmp-aes-gcm.c diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index 91eb768..f41e4eb 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -676,6 +676,18 @@ config CRYPTO_DEV_ROCKCHIP This driver interfaces with the hardware crypto accelerator. Supporting cbc/ecb chainmode, and aes/des/des3_ede cipher mode. +config CRYPTO_DEV_ZYNQMP_AES + tristate "Support for Xilinx ZynqMP AES hw accelerator" + depends on ZYNQMP_FIRMWARE || COMPILE_TEST + select CRYPTO_AES + select CRYPTO_ENGINE + select CRYPTO_AEAD + help + Xilinx ZynqMP has AES-GCM engine used for symmetric key + encryption and decryption. This driver interfaces with AES hw + accelerator. Select this if you want to use the ZynqMP module + for AES algorithms. + config CRYPTO_DEV_MEDIATEK tristate "MediaTek's EIP97 Cryptographic Engine driver" depends on (ARM && ARCH_MEDIATEK) || COMPILE_TEST diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile index 40229d4..d505d16 100644 --- a/drivers/crypto/Makefile +++ b/drivers/crypto/Makefile @@ -47,5 +47,6 @@ obj-$(CONFIG_CRYPTO_DEV_VMX) += vmx/ obj-$(CONFIG_CRYPTO_DEV_BCM_SPU) += bcm/ obj-$(CONFIG_CRYPTO_DEV_SAFEXCEL) += inside-secure/ obj-$(CONFIG_CRYPTO_DEV_ARTPEC6) += axis/ +obj-$(CONFIG_CRYPTO_DEV_ZYNQMP_AES) += xilinx/ obj-y += hisilicon/ obj-$(CONFIG_CRYPTO_DEV_AMLOGIC_GXL) += amlogic/ diff --git a/drivers/crypto/xilinx/Makefile b/drivers/crypto/xilinx/Makefile new file mode 100644 index 0000000..534e32d --- /dev/null +++ b/drivers/crypto/xilinx/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_CRYPTO_DEV_ZYNQMP_AES) += zynqmp-aes-gcm.o diff --git a/drivers/crypto/xilinx/zynqmp-aes-gcm.c b/drivers/crypto/xilinx/zynqmp-aes-gcm.c new file mode 100644 index 0000000..ca82da5 --- /dev/null +++ b/drivers/crypto/xilinx/zynqmp-aes-gcm.c @@ -0,0 +1,466 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Xilinx ZynqMP AES Driver. + * Copyright (c) 2020 Xilinx Inc. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include + +#include + +#define ZYNQMP_DMA_BIT_MASK 32U + +#define ZYNQMP_AES_KEY_SIZE AES_KEYSIZE_256 +#define ZYNQMP_AES_AUTH_SIZE 16U +#define ZYNQMP_KEY_SRC_SEL_KEY_LEN 1U +#define ZYNQMP_AES_BLK_SIZE 1U +#define ZYNQMP_AES_MIN_INPUT_BLK_SIZE 4U +#define ZYNQMP_AES_WORD_LEN 4U + +#define ZYNQMP_AES_GCM_TAG_MISMATCH_ERR 0x01 +#define ZYNQMP_AES_WRONG_KEY_SRC_ERR 0x13 +#define ZYNQMP_AES_PUF_NOT_PROGRAMMED 0xE300 + +enum zynqmp_aead_op { + ZYNQMP_AES_DECRYPT = 0, + ZYNQMP_AES_ENCRYPT +}; + +enum zynqmp_aead_keysrc { + ZYNQMP_AES_KUP_KEY = 0, + ZYNQMP_AES_DEV_KEY, + ZYNQMP_AES_PUF_KEY +}; + +struct zynqmp_aead_drv_ctx { + union { + struct aead_alg aead; + } alg; + struct device *dev; + struct crypto_engine *engine; + const struct zynqmp_eemi_ops *eemi_ops; +}; + +struct zynqmp_aead_hw_req { + u64 src; + u64 iv; + u64 key; + u64 dst; + u64 size; + u64 op; + u64 keysrc; +}; + +struct zynqmp_aead_tfm_ctx { + struct crypto_engine_ctx engine_ctx; + struct device *dev; + u8 key[ZYNQMP_AES_KEY_SIZE]; + u8 *iv; + u32 keylen; + u32 authsize; + enum zynqmp_aead_keysrc keysrc; + struct crypto_aead *fbk_cipher; +}; + +struct zynqmp_aead_req_ctx { + enum zynqmp_aead_op op; +}; + +static int zynqmp_aes_aead_cipher(struct aead_request *req) +{ + struct crypto_aead *aead = crypto_aead_reqtfm(req); + struct zynqmp_aead_tfm_ctx *tfm_ctx = crypto_aead_ctx(aead); + struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(req); + struct device *dev = tfm_ctx->dev; + struct aead_alg *alg = crypto_aead_alg(aead); + struct zynqmp_aead_drv_ctx *drv_ctx; + struct zynqmp_aead_hw_req *hwreq; + dma_addr_t dma_addr_data, dma_addr_hw_req; + unsigned int data_size; + unsigned int status; + size_t dma_size; + char *kbuf; + int err; + + drv_ctx = container_of(alg, struct zynqmp_aead_drv_ctx, alg.aead); + + if (!drv_ctx->eemi_ops->aes) + return -ENOTSUPP; + + if (tfm_ctx->keysrc == ZYNQMP_AES_KUP_KEY) + dma_size = req->cryptlen + ZYNQMP_AES_KEY_SIZE + + GCM_AES_IV_SIZE; + else + dma_size = req->cryptlen + GCM_AES_IV_SIZE; + + kbuf = dma_alloc_coherent(dev, dma_size, &dma_addr_data, GFP_KERNEL); + if (!kbuf) + return -ENOMEM; + + hwreq = dma_alloc_coherent(dev, sizeof(struct zynqmp_aead_hw_req), + &dma_addr_hw_req, GFP_KERNEL); + if (!hwreq) { + dma_free_coherent(dev, dma_size, kbuf, dma_addr_data); + return -ENOMEM; + } + + data_size = req->cryptlen; + scatterwalk_map_and_copy(kbuf, req->src, 0, req->cryptlen, 0); + memcpy(kbuf + data_size, req->iv, GCM_AES_IV_SIZE); + + hwreq->src = dma_addr_data; + hwreq->dst = dma_addr_data; + hwreq->iv = hwreq->src + data_size; + hwreq->keysrc = tfm_ctx->keysrc; + hwreq->op = rq_ctx->op; + + if (hwreq->op == ZYNQMP_AES_ENCRYPT) + hwreq->size = data_size; + else + hwreq->size = data_size - ZYNQMP_AES_AUTH_SIZE; + + if (hwreq->keysrc == ZYNQMP_AES_KUP_KEY) { + memcpy(kbuf + data_size + GCM_AES_IV_SIZE, + tfm_ctx->key, ZYNQMP_AES_KEY_SIZE); + + hwreq->key = hwreq->src + data_size + GCM_AES_IV_SIZE; + } else { + hwreq->key = 0; + } + + drv_ctx->eemi_ops->aes(dma_addr_hw_req, &status); + + if (status) { + switch (status) { + case ZYNQMP_AES_GCM_TAG_MISMATCH_ERR: + dev_err(dev, "ERROR: Gcm Tag mismatch\n"); + break; + case ZYNQMP_AES_WRONG_KEY_SRC_ERR: + dev_err(dev, "ERROR: Wrong KeySrc, enable secure mode\n"); + break; + case ZYNQMP_AES_PUF_NOT_PROGRAMMED: + dev_err(dev, "ERROR: PUF is not registered\n"); + break; + default: + dev_err(dev, "ERROR: Unknown error\n"); + break; + } + err = -status; + } else { + if (hwreq->op == ZYNQMP_AES_ENCRYPT) + data_size = data_size + ZYNQMP_AES_AUTH_SIZE; + else + data_size = data_size - ZYNQMP_AES_AUTH_SIZE; + + sg_copy_from_buffer(req->dst, sg_nents(req->dst), + kbuf, data_size); + err = 0; + } + + if (kbuf) { + memzero_explicit(kbuf, dma_size); + dma_free_coherent(dev, dma_size, kbuf, dma_addr_data); + } + if (hwreq) { + memzero_explicit(hwreq, sizeof(struct zynqmp_aead_hw_req)); + dma_free_coherent(dev, sizeof(struct zynqmp_aead_hw_req), + hwreq, dma_addr_hw_req); + } + return err; +} + +static int zynqmp_fallback_check(struct zynqmp_aead_tfm_ctx *tfm_ctx, + struct aead_request *req) +{ + int need_fallback = 0; + struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(req); + + if (tfm_ctx->authsize != ZYNQMP_AES_AUTH_SIZE) + need_fallback = 1; + + if (tfm_ctx->keysrc == ZYNQMP_AES_KUP_KEY && + tfm_ctx->keylen != ZYNQMP_AES_KEY_SIZE) { + need_fallback = 1; + } + if (req->assoclen != 0 || + req->cryptlen < ZYNQMP_AES_MIN_INPUT_BLK_SIZE) { + need_fallback = 1; + } + if ((req->cryptlen % ZYNQMP_AES_WORD_LEN) != 0) + need_fallback = 1; + + if (rq_ctx->op == ZYNQMP_AES_DECRYPT && + req->cryptlen <= ZYNQMP_AES_AUTH_SIZE) { + need_fallback = 1; + } + return need_fallback; +} + +static int zynqmp_handle_aes_req(struct crypto_engine *engine, + void *req) +{ + struct aead_request *areq = + container_of(req, struct aead_request, base); + struct crypto_aead *aead = crypto_aead_reqtfm(req); + struct zynqmp_aead_tfm_ctx *tfm_ctx = crypto_aead_ctx(aead); + struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(areq); + struct aead_request *subreq = aead_request_ctx(req); + int need_fallback; + int err; + + need_fallback = zynqmp_fallback_check(tfm_ctx, areq); + + if (need_fallback) { + aead_request_set_tfm(subreq, tfm_ctx->fbk_cipher); + + aead_request_set_callback(subreq, areq->base.flags, + NULL, NULL); + aead_request_set_crypt(subreq, areq->src, areq->dst, + areq->cryptlen, areq->iv); + aead_request_set_ad(subreq, areq->assoclen); + if (rq_ctx->op == ZYNQMP_AES_ENCRYPT) + err = crypto_aead_encrypt(subreq); + else + err = crypto_aead_decrypt(subreq); + } else { + err = zynqmp_aes_aead_cipher(areq); + } + + crypto_finalize_aead_request(engine, areq, err); + return 0; +} + +static int zynqmp_aes_aead_setkey(struct crypto_aead *aead, const u8 *key, + unsigned int keylen) +{ + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct zynqmp_aead_tfm_ctx *tfm_ctx = + (struct zynqmp_aead_tfm_ctx *)crypto_tfm_ctx(tfm); + unsigned char keysrc; + int err; + + if (keylen == ZYNQMP_KEY_SRC_SEL_KEY_LEN) { + keysrc = *key; + if (keysrc == ZYNQMP_AES_KUP_KEY || + keysrc == ZYNQMP_AES_DEV_KEY || + keysrc == ZYNQMP_AES_PUF_KEY) { + tfm_ctx->keysrc = (enum zynqmp_aead_keysrc)keysrc; + } else { + tfm_ctx->keylen = keylen; + } + } else { + tfm_ctx->keylen = keylen; + if (keylen == ZYNQMP_AES_KEY_SIZE) { + tfm_ctx->keysrc = ZYNQMP_AES_KUP_KEY; + memcpy(tfm_ctx->key, key, keylen); + } + } + + tfm_ctx->fbk_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK; + tfm_ctx->fbk_cipher->base.crt_flags |= (aead->base.crt_flags & + CRYPTO_TFM_REQ_MASK); + + err = crypto_aead_setkey(tfm_ctx->fbk_cipher, key, keylen); + if (err) { + aead->base.crt_flags &= ~CRYPTO_TFM_RES_MASK; + aead->base.crt_flags |= + (tfm_ctx->fbk_cipher->base.crt_flags & + CRYPTO_TFM_RES_MASK); + } + + return err; +} + +static int zynqmp_aes_aead_setauthsize(struct crypto_aead *aead, + unsigned int authsize) +{ + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct zynqmp_aead_tfm_ctx *tfm_ctx = + (struct zynqmp_aead_tfm_ctx *)crypto_tfm_ctx(tfm); + + tfm_ctx->authsize = authsize; + return crypto_aead_setauthsize(tfm_ctx->fbk_cipher, authsize); +} + +static int zynqmp_aes_aead_encrypt(struct aead_request *req) +{ + struct zynqmp_aead_drv_ctx *drv_ctx; + struct crypto_aead *aead = crypto_aead_reqtfm(req); + struct aead_alg *alg = crypto_aead_alg(aead); + struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(req); + + rq_ctx->op = ZYNQMP_AES_ENCRYPT; + drv_ctx = container_of(alg, struct zynqmp_aead_drv_ctx, alg.aead); + + return crypto_transfer_aead_request_to_engine(drv_ctx->engine, req); +} + +static int zynqmp_aes_aead_decrypt(struct aead_request *req) +{ + struct zynqmp_aead_drv_ctx *drv_ctx; + struct crypto_aead *aead = crypto_aead_reqtfm(req); + struct aead_alg *alg = crypto_aead_alg(aead); + struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(req); + + rq_ctx->op = ZYNQMP_AES_DECRYPT; + drv_ctx = container_of(alg, struct zynqmp_aead_drv_ctx, alg.aead); + + return crypto_transfer_aead_request_to_engine(drv_ctx->engine, req); +} + +static int zynqmp_aes_aead_init(struct crypto_aead *aead) +{ + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct zynqmp_aead_tfm_ctx *tfm_ctx = + (struct zynqmp_aead_tfm_ctx *)crypto_tfm_ctx(tfm); + struct zynqmp_aead_drv_ctx *drv_ctx; + struct aead_alg *alg = crypto_aead_alg(aead); + + drv_ctx = container_of(alg, struct zynqmp_aead_drv_ctx, alg.aead); + tfm_ctx->dev = drv_ctx->dev; + + tfm_ctx->engine_ctx.op.do_one_request = zynqmp_handle_aes_req; + tfm_ctx->engine_ctx.op.prepare_request = NULL; + tfm_ctx->engine_ctx.op.unprepare_request = NULL; + + tfm_ctx->fbk_cipher = crypto_alloc_aead(drv_ctx->alg.aead.base.cra_name, + 0, + CRYPTO_ALG_NEED_FALLBACK); + + if (IS_ERR(tfm_ctx->fbk_cipher)) { + pr_err("%s() Error: failed to allocate fallback for %s\n", + __func__, drv_ctx->alg.aead.base.cra_name); + return PTR_ERR(tfm_ctx->fbk_cipher); + } + + crypto_aead_set_reqsize(aead, + max(sizeof(struct zynqmp_aead_req_ctx), + sizeof(struct aead_request) + + crypto_aead_reqsize(tfm_ctx->fbk_cipher))); + return 0; +} + +static void zynqmp_aes_aead_exit(struct crypto_aead *aead) +{ + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct zynqmp_aead_tfm_ctx *tfm_ctx = + (struct zynqmp_aead_tfm_ctx *)crypto_tfm_ctx(tfm); + + if (tfm_ctx->fbk_cipher) { + crypto_free_aead(tfm_ctx->fbk_cipher); + tfm_ctx->fbk_cipher = NULL; + } + memzero_explicit(tfm_ctx, sizeof(struct zynqmp_aead_tfm_ctx)); +} + +static struct zynqmp_aead_drv_ctx aes_drv_ctx = { + .alg.aead = { + .setkey = zynqmp_aes_aead_setkey, + .setauthsize = zynqmp_aes_aead_setauthsize, + .encrypt = zynqmp_aes_aead_encrypt, + .decrypt = zynqmp_aes_aead_decrypt, + .init = zynqmp_aes_aead_init, + .exit = zynqmp_aes_aead_exit, + .ivsize = GCM_AES_IV_SIZE, + .maxauthsize = ZYNQMP_AES_AUTH_SIZE, + .base = { + .cra_name = "gcm(aes)", + .cra_driver_name = "xilinx-zynqmp-aes-gcm", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_TYPE_AEAD | + CRYPTO_ALG_ASYNC | + CRYPTO_ALG_KERN_DRIVER_ONLY | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = ZYNQMP_AES_BLK_SIZE, + .cra_ctxsize = sizeof(struct zynqmp_aead_tfm_ctx), + .cra_module = THIS_MODULE, + } + } +}; + +static int zynqmp_aes_aead_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + int err; + + /* ZynqMP AES driver supports only one instance */ + if (!aes_drv_ctx.dev) + aes_drv_ctx.dev = dev; + else + return -ENODEV; + + aes_drv_ctx.eemi_ops = zynqmp_pm_get_eemi_ops(); + if (IS_ERR(aes_drv_ctx.eemi_ops)) { + dev_err(dev, "Failed to get ZynqMP EEMI interface\n"); + return PTR_ERR(aes_drv_ctx.eemi_ops); + } + + err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(ZYNQMP_DMA_BIT_MASK)); + if (err < 0) { + dev_err(dev, "No usable DMA configuration\n"); + return err; + } + + aes_drv_ctx.engine = crypto_engine_alloc_init(dev, 1); + if (!aes_drv_ctx.engine) { + dev_err(dev, "Cannot alloc AES engine\n"); + err = -ENOMEM; + goto err_engine; + } + + err = crypto_engine_start(aes_drv_ctx.engine); + if (err) { + dev_err(dev, "Cannot start AES engine\n"); + goto err_engine; + } + + err = crypto_register_aead(&aes_drv_ctx.alg.aead); + if (err < 0) { + dev_err(dev, "Failed to register AEAD alg.\n"); + goto err_aead; + } + return 0; + +err_aead: + crypto_unregister_aead(&aes_drv_ctx.alg.aead); + +err_engine: + if (aes_drv_ctx.engine) + crypto_engine_exit(aes_drv_ctx.engine); + + return err; +} + +static int zynqmp_aes_aead_remove(struct platform_device *pdev) +{ + crypto_engine_exit(aes_drv_ctx.engine); + crypto_unregister_aead(&aes_drv_ctx.alg.aead); + + return 0; +} + +static const struct of_device_id zynqmp_aes_dt_ids[] = { + { .compatible = "xlnx,zynqmp-aes" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, zynqmp_aes_dt_ids); + +static struct platform_driver zynqmp_aes_driver = { + .probe = zynqmp_aes_aead_probe, + .remove = zynqmp_aes_aead_remove, + .driver = { + .name = "zynqmp-aes", + .of_match_table = zynqmp_aes_dt_ids, + }, +}; + +module_platform_driver(zynqmp_aes_driver); +MODULE_LICENSE("GPL"); From patchwork Tue Jan 28 06:18:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalyani Akula X-Patchwork-Id: 11353671 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A8A75139A for ; 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Mon, 27 Jan 2020 22:19:26 -0800 Received: by xhdengvm155080.xilinx.com (Postfix, from userid 23151) id 6EE528019B; Tue, 28 Jan 2020 11:48:32 +0530 (IST) From: Kalyani Akula To: herbert@gondor.apana.org.au, davem@davemloft.net, monstr@seznam.cz, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Rob Herring , devicetree@vger.kernel.org, git-dev , Mohan Marutirao Dhanawade , Sarat Chand Savitala , Harsh Jain , Michal Simek , Kalyani Akula , Kalyani Akula Subject: [PATCH V6 4/4] arm64: zynqmp: Add Xilinx AES node. Date: Tue, 28 Jan 2020 11:48:28 +0530 Message-Id: <1580192308-10952-5-git-send-email-kalyani.akula@xilinx.com> X-Mailer: git-send-email 1.9.5 In-Reply-To: <1580192308-10952-1-git-send-email-kalyani.akula@xilinx.com> References: <1580192308-10952-1-git-send-email-kalyani.akula@xilinx.com> X-RCIS-Action: ALLOW X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.83;IPV:;CTRY:US;EFV:NLI;SFV:NSPM;SFS:(10009020)(4636009)(346002)(376002)(39860400002)(396003)(136003)(189003)(199004)(44832011)(5660300002)(4326008)(70206006)(70586007)(2616005)(81166006)(81156014)(107886003)(36756003)(8936002)(6266002)(8676002)(4744005)(356004)(6666004)(26005)(478600001)(2906002)(336012)(186003)(42186006)(426003)(316002)(54906003);DIR:OUT;SFP:1101;SCL:1;SRVR:BL0PR02MB3731;H:xsj-pvapsmtpgw01;FPR:;SPF:Pass;LANG:en;PTR:unknown-60-83.xilinx.com;MX:1;A:1; MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: db071a2b-ba55-40ff-87f4-08d7a3ba0b1f X-MS-TrafficTypeDiagnostic: BL0PR02MB3731: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:4125; X-Forefront-PRVS: 029651C7A1 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: ujdvTVVL8jM5K4jd8NQU0Af861RyLOdpIPRoj1eIJbiZSZVQxsiz2BGlPjod6Xgmi6AvHIa6kzDBnVlTyO2b27WpZvRbKo9eNvRLyzVJXfnxlV6W45tRK4BkpdvOw6Ti7XDx35wQXXIudbluI3P0EiYQsvBm+5vmoAmpn+0uGnq4ODWHDmw80+5gDmwohzcNmW9etw7YAipZVOKYqwWFwx41VyqOvPP9k5wpSMByVtQu6zJYj7wnz322gjoZdxR9tNsMPinZJ8E6Giknbo/wsI8U2aOoRi/zNNKYEjcnPk7D263tgSsSh64XcAiigMFPQ7X6SvOxd/pQ+t+fyzU2AIxj8cD4LOPWrxFoJTe8hpgr89RCkFeQ+LxKYnjrg9hEUcOCQO3KC+dF0KmsT9piFWW4XxpjcT/OMU3WpR3ntj7jxHURdRr3GgI1yd7u6J2W X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Jan 2020 06:19:34.0793 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: db071a2b-ba55-40ff-87f4-08d7a3ba0b1f X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.60.83];Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL0PR02MB3731 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org This patch adds a AES DT node for Xilinx ZynqMP SoC. Signed-off-by: Kalyani Akula Acked-by: Michal Simek --- V5 Changes: - Moved arm64: zynqmp: Add Xilinx AES node patch from 2/4 to 4/4 - Corrected typo in the subject. - Updated zynqmp-aes node to correct location. arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi index 3c731e7..e9fbbe1 100644 --- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi +++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi @@ -133,6 +133,10 @@ zynqmp_pcap: pcap { compatible = "xlnx,zynqmp-pcap-fpga"; }; + + xlnx_aes: zynqmp-aes { + compatible = "xlnx,zynqmp-aes"; + }; }; };