Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Xilinx ZynqMP AES Driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (c) 2020 Xilinx Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <crypto/aes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <crypto/engine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <crypto/gcm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <crypto/internal/aead.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <crypto/scatterwalk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/firmware/xlnx-zynqmp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define ZYNQMP_DMA_BIT_MASK	32U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define ZYNQMP_AES_KEY_SIZE		AES_KEYSIZE_256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define ZYNQMP_AES_AUTH_SIZE		16U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define ZYNQMP_KEY_SRC_SEL_KEY_LEN	1U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define ZYNQMP_AES_BLK_SIZE		1U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define ZYNQMP_AES_MIN_INPUT_BLK_SIZE	4U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define ZYNQMP_AES_WORD_LEN		4U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define ZYNQMP_AES_GCM_TAG_MISMATCH_ERR		0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define ZYNQMP_AES_WRONG_KEY_SRC_ERR		0x13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define ZYNQMP_AES_PUF_NOT_PROGRAMMED		0xE300
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) enum zynqmp_aead_op {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	ZYNQMP_AES_DECRYPT = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	ZYNQMP_AES_ENCRYPT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) enum zynqmp_aead_keysrc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	ZYNQMP_AES_KUP_KEY = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	ZYNQMP_AES_DEV_KEY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	ZYNQMP_AES_PUF_KEY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) struct zynqmp_aead_drv_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 		struct aead_alg aead;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	} alg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	struct crypto_engine *engine;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) struct zynqmp_aead_hw_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	u64 src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	u64 iv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	u64 key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	u64 dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	u64 size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	u64 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	u64 keysrc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) struct zynqmp_aead_tfm_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	struct crypto_engine_ctx engine_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	u8 key[ZYNQMP_AES_KEY_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	u8 *iv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	u32 keylen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	u32 authsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	enum zynqmp_aead_keysrc keysrc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	struct crypto_aead *fbk_cipher;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) struct zynqmp_aead_req_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	enum zynqmp_aead_op op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) static int zynqmp_aes_aead_cipher(struct aead_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	struct zynqmp_aead_tfm_ctx *tfm_ctx = crypto_aead_ctx(aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	struct device *dev = tfm_ctx->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	struct zynqmp_aead_hw_req *hwreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	dma_addr_t dma_addr_data, dma_addr_hw_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	unsigned int data_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	unsigned int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	size_t dma_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	char *kbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	if (tfm_ctx->keysrc == ZYNQMP_AES_KUP_KEY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		dma_size = req->cryptlen + ZYNQMP_AES_KEY_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 			   + GCM_AES_IV_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		dma_size = req->cryptlen + GCM_AES_IV_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	kbuf = dma_alloc_coherent(dev, dma_size, &dma_addr_data, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	if (!kbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	hwreq = dma_alloc_coherent(dev, sizeof(struct zynqmp_aead_hw_req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 				   &dma_addr_hw_req, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	if (!hwreq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		dma_free_coherent(dev, dma_size, kbuf, dma_addr_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	data_size = req->cryptlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	scatterwalk_map_and_copy(kbuf, req->src, 0, req->cryptlen, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	memcpy(kbuf + data_size, req->iv, GCM_AES_IV_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	hwreq->src = dma_addr_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	hwreq->dst = dma_addr_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	hwreq->iv = hwreq->src + data_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	hwreq->keysrc = tfm_ctx->keysrc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	hwreq->op = rq_ctx->op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	if (hwreq->op == ZYNQMP_AES_ENCRYPT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		hwreq->size = data_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		hwreq->size = data_size - ZYNQMP_AES_AUTH_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (hwreq->keysrc == ZYNQMP_AES_KUP_KEY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		memcpy(kbuf + data_size + GCM_AES_IV_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		       tfm_ctx->key, ZYNQMP_AES_KEY_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		hwreq->key = hwreq->src + data_size + GCM_AES_IV_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		hwreq->key = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	ret = zynqmp_pm_aes_engine(dma_addr_hw_req, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		dev_err(dev, "ERROR: AES PM API failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		err = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	} else if (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		case ZYNQMP_AES_GCM_TAG_MISMATCH_ERR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 			dev_err(dev, "ERROR: Gcm Tag mismatch\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		case ZYNQMP_AES_WRONG_KEY_SRC_ERR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			dev_err(dev, "ERROR: Wrong KeySrc, enable secure mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		case ZYNQMP_AES_PUF_NOT_PROGRAMMED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 			dev_err(dev, "ERROR: PUF is not registered\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			dev_err(dev, "ERROR: Unknown error\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		err = -status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		if (hwreq->op == ZYNQMP_AES_ENCRYPT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			data_size = data_size + ZYNQMP_AES_AUTH_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 			data_size = data_size - ZYNQMP_AES_AUTH_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		sg_copy_from_buffer(req->dst, sg_nents(req->dst),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 				    kbuf, data_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	if (kbuf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		memzero_explicit(kbuf, dma_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		dma_free_coherent(dev, dma_size, kbuf, dma_addr_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	if (hwreq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		memzero_explicit(hwreq, sizeof(struct zynqmp_aead_hw_req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		dma_free_coherent(dev, sizeof(struct zynqmp_aead_hw_req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 				  hwreq, dma_addr_hw_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static int zynqmp_fallback_check(struct zynqmp_aead_tfm_ctx *tfm_ctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 				 struct aead_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	int need_fallback = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	if (tfm_ctx->authsize != ZYNQMP_AES_AUTH_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		need_fallback = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	if (tfm_ctx->keysrc == ZYNQMP_AES_KUP_KEY &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	    tfm_ctx->keylen != ZYNQMP_AES_KEY_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		need_fallback = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (req->assoclen != 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	    req->cryptlen < ZYNQMP_AES_MIN_INPUT_BLK_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		need_fallback = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if ((req->cryptlen % ZYNQMP_AES_WORD_LEN) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		need_fallback = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	if (rq_ctx->op == ZYNQMP_AES_DECRYPT &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	    req->cryptlen <= ZYNQMP_AES_AUTH_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		need_fallback = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	return need_fallback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static int zynqmp_handle_aes_req(struct crypto_engine *engine,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 				 void *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	struct aead_request *areq =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 				container_of(req, struct aead_request, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	struct zynqmp_aead_tfm_ctx *tfm_ctx = crypto_aead_ctx(aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct aead_request *subreq = aead_request_ctx(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	int need_fallback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	need_fallback = zynqmp_fallback_check(tfm_ctx, areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (need_fallback) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		aead_request_set_tfm(subreq, tfm_ctx->fbk_cipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		aead_request_set_callback(subreq, areq->base.flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 					  NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		aead_request_set_crypt(subreq, areq->src, areq->dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 				       areq->cryptlen, areq->iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		aead_request_set_ad(subreq, areq->assoclen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		if (rq_ctx->op == ZYNQMP_AES_ENCRYPT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 			err = crypto_aead_encrypt(subreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 			err = crypto_aead_decrypt(subreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		err = zynqmp_aes_aead_cipher(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	crypto_finalize_aead_request(engine, areq, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static int zynqmp_aes_aead_setkey(struct crypto_aead *aead, const u8 *key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 				  unsigned int keylen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	struct crypto_tfm *tfm = crypto_aead_tfm(aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	struct zynqmp_aead_tfm_ctx *tfm_ctx =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			(struct zynqmp_aead_tfm_ctx *)crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	unsigned char keysrc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	if (keylen == ZYNQMP_KEY_SRC_SEL_KEY_LEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		keysrc = *key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		if (keysrc == ZYNQMP_AES_KUP_KEY ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		    keysrc == ZYNQMP_AES_DEV_KEY ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		    keysrc == ZYNQMP_AES_PUF_KEY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 			tfm_ctx->keysrc = (enum zynqmp_aead_keysrc)keysrc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 			tfm_ctx->keylen = keylen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		tfm_ctx->keylen = keylen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		if (keylen == ZYNQMP_AES_KEY_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 			tfm_ctx->keysrc = ZYNQMP_AES_KUP_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 			memcpy(tfm_ctx->key, key, keylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	tfm_ctx->fbk_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	tfm_ctx->fbk_cipher->base.crt_flags |= (aead->base.crt_flags &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 					CRYPTO_TFM_REQ_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	return crypto_aead_setkey(tfm_ctx->fbk_cipher, key, keylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) static int zynqmp_aes_aead_setauthsize(struct crypto_aead *aead,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 				       unsigned int authsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	struct crypto_tfm *tfm = crypto_aead_tfm(aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	struct zynqmp_aead_tfm_ctx *tfm_ctx =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 			(struct zynqmp_aead_tfm_ctx *)crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	tfm_ctx->authsize = authsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	return crypto_aead_setauthsize(tfm_ctx->fbk_cipher, authsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static int zynqmp_aes_aead_encrypt(struct aead_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	struct zynqmp_aead_drv_ctx *drv_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	struct aead_alg *alg = crypto_aead_alg(aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	rq_ctx->op = ZYNQMP_AES_ENCRYPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	drv_ctx = container_of(alg, struct zynqmp_aead_drv_ctx, alg.aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	return crypto_transfer_aead_request_to_engine(drv_ctx->engine, req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) static int zynqmp_aes_aead_decrypt(struct aead_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	struct zynqmp_aead_drv_ctx *drv_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	struct aead_alg *alg = crypto_aead_alg(aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	rq_ctx->op = ZYNQMP_AES_DECRYPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	drv_ctx = container_of(alg, struct zynqmp_aead_drv_ctx, alg.aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	return crypto_transfer_aead_request_to_engine(drv_ctx->engine, req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static int zynqmp_aes_aead_init(struct crypto_aead *aead)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	struct crypto_tfm *tfm = crypto_aead_tfm(aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	struct zynqmp_aead_tfm_ctx *tfm_ctx =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		(struct zynqmp_aead_tfm_ctx *)crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	struct zynqmp_aead_drv_ctx *drv_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	struct aead_alg *alg = crypto_aead_alg(aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	drv_ctx = container_of(alg, struct zynqmp_aead_drv_ctx, alg.aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	tfm_ctx->dev = drv_ctx->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	tfm_ctx->engine_ctx.op.do_one_request = zynqmp_handle_aes_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	tfm_ctx->engine_ctx.op.prepare_request = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	tfm_ctx->engine_ctx.op.unprepare_request = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	tfm_ctx->fbk_cipher = crypto_alloc_aead(drv_ctx->alg.aead.base.cra_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 						0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 						CRYPTO_ALG_NEED_FALLBACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	if (IS_ERR(tfm_ctx->fbk_cipher)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		pr_err("%s() Error: failed to allocate fallback for %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		       __func__, drv_ctx->alg.aead.base.cra_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		return PTR_ERR(tfm_ctx->fbk_cipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	crypto_aead_set_reqsize(aead,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 				max(sizeof(struct zynqmp_aead_req_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 				    sizeof(struct aead_request) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 				    crypto_aead_reqsize(tfm_ctx->fbk_cipher)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static void zynqmp_aes_aead_exit(struct crypto_aead *aead)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	struct crypto_tfm *tfm = crypto_aead_tfm(aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	struct zynqmp_aead_tfm_ctx *tfm_ctx =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 			(struct zynqmp_aead_tfm_ctx *)crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	if (tfm_ctx->fbk_cipher) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 		crypto_free_aead(tfm_ctx->fbk_cipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 		tfm_ctx->fbk_cipher = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	memzero_explicit(tfm_ctx, sizeof(struct zynqmp_aead_tfm_ctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) static struct zynqmp_aead_drv_ctx aes_drv_ctx = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	.alg.aead = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 		.setkey		= zynqmp_aes_aead_setkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 		.setauthsize	= zynqmp_aes_aead_setauthsize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 		.encrypt	= zynqmp_aes_aead_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		.decrypt	= zynqmp_aes_aead_decrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 		.init		= zynqmp_aes_aead_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 		.exit		= zynqmp_aes_aead_exit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		.ivsize		= GCM_AES_IV_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 		.maxauthsize	= ZYNQMP_AES_AUTH_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 		.base = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 		.cra_name		= "gcm(aes)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 		.cra_driver_name	= "xilinx-zynqmp-aes-gcm",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 		.cra_priority		= 200,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 		.cra_flags		= CRYPTO_ALG_TYPE_AEAD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 					  CRYPTO_ALG_ASYNC |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 					  CRYPTO_ALG_ALLOCATES_MEMORY |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 					  CRYPTO_ALG_KERN_DRIVER_ONLY |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 					  CRYPTO_ALG_NEED_FALLBACK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 		.cra_blocksize		= ZYNQMP_AES_BLK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 		.cra_ctxsize		= sizeof(struct zynqmp_aead_tfm_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		.cra_module		= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) static int zynqmp_aes_aead_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	/* ZynqMP AES driver supports only one instance */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	if (!aes_drv_ctx.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 		aes_drv_ctx.dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(ZYNQMP_DMA_BIT_MASK));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 		dev_err(dev, "No usable DMA configuration\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	aes_drv_ctx.engine = crypto_engine_alloc_init(dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	if (!aes_drv_ctx.engine) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 		dev_err(dev, "Cannot alloc AES engine\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 		err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 		goto err_engine;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 	err = crypto_engine_start(aes_drv_ctx.engine);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 		dev_err(dev, "Cannot start AES engine\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 		goto err_engine;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 	err = crypto_register_aead(&aes_drv_ctx.alg.aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 		dev_err(dev, "Failed to register AEAD alg.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 		goto err_aead;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) err_aead:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 	crypto_unregister_aead(&aes_drv_ctx.alg.aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) err_engine:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 	if (aes_drv_ctx.engine)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 		crypto_engine_exit(aes_drv_ctx.engine);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static int zynqmp_aes_aead_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	crypto_engine_exit(aes_drv_ctx.engine);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 	crypto_unregister_aead(&aes_drv_ctx.alg.aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static const struct of_device_id zynqmp_aes_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 	{ .compatible = "xlnx,zynqmp-aes" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 	{ /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) MODULE_DEVICE_TABLE(of, zynqmp_aes_dt_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) static struct platform_driver zynqmp_aes_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 	.probe	= zynqmp_aes_aead_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 	.remove = zynqmp_aes_aead_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 		.name		= "zynqmp-aes",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 		.of_match_table = zynqmp_aes_dt_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) module_platform_driver(zynqmp_aes_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) MODULE_LICENSE("GPL");