^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) * sun8i-ce-cipher.c - hardware cryptographic offloader for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Allwinner H3/A64/H5/H2+/H6/R40 SoC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2016-2019 Corentin LABBE <clabbe.montjoie@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * This file add support for AES cipher with 128,192,256 bits keysize in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * CBC and ECB mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * You could find a link for the datasheet in Documentation/arm/sunxi.rst
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/bottom_half.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/crypto.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <crypto/scatterwalk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <crypto/internal/des.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <crypto/internal/skcipher.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "sun8i-ce.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int sun8i_ce_cipher_need_fallback(struct skcipher_request *areq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct scatterlist *sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) if (sg_nents(areq->src) > MAX_SG || sg_nents(areq->dst) > MAX_SG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) if (areq->cryptlen < crypto_skcipher_ivsize(tfm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (areq->cryptlen == 0 || areq->cryptlen % 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) sg = areq->src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) while (sg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) sg = sg_next(sg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) sg = areq->dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) while (sg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) sg = sg_next(sg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static int sun8i_ce_cipher_fallback(struct skcipher_request *areq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct sun8i_ce_alg_template *algt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) algt = container_of(alg, struct sun8i_ce_alg_template, alg.skcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) algt->stat_fb++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) skcipher_request_set_tfm(&rctx->fallback_req, op->fallback_tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) skcipher_request_set_callback(&rctx->fallback_req, areq->base.flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) areq->base.complete, areq->base.data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) skcipher_request_set_crypt(&rctx->fallback_req, areq->src, areq->dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) areq->cryptlen, areq->iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (rctx->op_dir & CE_DECRYPTION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) err = crypto_skcipher_decrypt(&rctx->fallback_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) err = crypto_skcipher_encrypt(&rctx->fallback_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct skcipher_request *areq = container_of(async_req, struct skcipher_request, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct sun8i_ce_dev *ce = op->ce;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct sun8i_ce_alg_template *algt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct sun8i_ce_flow *chan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct ce_task *cet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct scatterlist *sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) unsigned int todo, len, offset, ivsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u32 common, sym;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) int flow, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) int nr_sgs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int nr_sgd = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) algt = container_of(alg, struct sun8i_ce_alg_template, alg.skcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) dev_dbg(ce->dev, "%s %s %u %x IV(%p %u) key=%u\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) crypto_tfm_alg_name(areq->base.tfm),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) areq->cryptlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) rctx->op_dir, areq->iv, crypto_skcipher_ivsize(tfm),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) op->keylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) algt->stat_req++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) flow = rctx->flow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) chan = &ce->chanlist[flow];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) cet = chan->tl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) memset(cet, 0, sizeof(struct ce_task));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) cet->t_id = cpu_to_le32(flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) common = ce->variant->alg_cipher[algt->ce_algo_id];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) common |= rctx->op_dir | CE_COMM_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) cet->t_common_ctl = cpu_to_le32(common);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* CTS and recent CE (H6) need length in bytes, in word otherwise */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (ce->variant->cipher_t_dlen_in_bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) cet->t_dlen = cpu_to_le32(areq->cryptlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) cet->t_dlen = cpu_to_le32(areq->cryptlen / 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) sym = ce->variant->op_mode[algt->ce_blockmode];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) len = op->keylen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) switch (len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) case 128 / 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) sym |= CE_AES_128BITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) case 192 / 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) sym |= CE_AES_192BITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) case 256 / 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) sym |= CE_AES_256BITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) cet->t_sym_ctl = cpu_to_le32(sym);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) cet->t_asym_ctl = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) rctx->addr_key = dma_map_single(ce->dev, op->key, op->keylen, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (dma_mapping_error(ce->dev, rctx->addr_key)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) dev_err(ce->dev, "Cannot DMA MAP KEY\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) goto theend;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) cet->t_key = cpu_to_le32(rctx->addr_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) ivsize = crypto_skcipher_ivsize(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (areq->iv && crypto_skcipher_ivsize(tfm) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) rctx->ivlen = ivsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) rctx->bounce_iv = kzalloc(ivsize, GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (!rctx->bounce_iv) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) goto theend_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (rctx->op_dir & CE_DECRYPTION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) rctx->backup_iv = kzalloc(ivsize, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (!rctx->backup_iv) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) goto theend_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) offset = areq->cryptlen - ivsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) scatterwalk_map_and_copy(rctx->backup_iv, areq->src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) offset, ivsize, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) memcpy(rctx->bounce_iv, areq->iv, ivsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) rctx->addr_iv = dma_map_single(ce->dev, rctx->bounce_iv, rctx->ivlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (dma_mapping_error(ce->dev, rctx->addr_iv)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) dev_err(ce->dev, "Cannot DMA MAP IV\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) goto theend_iv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) cet->t_iv = cpu_to_le32(rctx->addr_iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (areq->src == areq->dst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) nr_sgs = dma_map_sg(ce->dev, areq->src, sg_nents(areq->src),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) DMA_BIDIRECTIONAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) goto theend_iv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) nr_sgd = nr_sgs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) nr_sgs = dma_map_sg(ce->dev, areq->src, sg_nents(areq->src),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) goto theend_iv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) nr_sgd = dma_map_sg(ce->dev, areq->dst, sg_nents(areq->dst),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (nr_sgd <= 0 || nr_sgd > MAX_SG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) dev_err(ce->dev, "Invalid sg number %d\n", nr_sgd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) goto theend_sgs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) len = areq->cryptlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) for_each_sg(areq->src, sg, nr_sgs, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) cet->t_src[i].addr = cpu_to_le32(sg_dma_address(sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) todo = min(len, sg_dma_len(sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) cet->t_src[i].len = cpu_to_le32(todo / 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) dev_dbg(ce->dev, "%s total=%u SG(%d %u off=%d) todo=%u\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) areq->cryptlen, i, cet->t_src[i].len, sg->offset, todo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) len -= todo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (len > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) dev_err(ce->dev, "remaining len %d\n", len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) goto theend_sgs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) len = areq->cryptlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) for_each_sg(areq->dst, sg, nr_sgd, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) cet->t_dst[i].addr = cpu_to_le32(sg_dma_address(sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) todo = min(len, sg_dma_len(sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) cet->t_dst[i].len = cpu_to_le32(todo / 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) dev_dbg(ce->dev, "%s total=%u SG(%d %u off=%d) todo=%u\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) areq->cryptlen, i, cet->t_dst[i].len, sg->offset, todo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) len -= todo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (len > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) dev_err(ce->dev, "remaining len %d\n", len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) goto theend_sgs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) chan->timeout = areq->cryptlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) rctx->nr_sgs = nr_sgs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) rctx->nr_sgd = nr_sgd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) theend_sgs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (areq->src == areq->dst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_BIDIRECTIONAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) if (nr_sgs > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) dma_unmap_sg(ce->dev, areq->dst, nr_sgd, DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) theend_iv:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (areq->iv && ivsize > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (rctx->addr_iv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) dma_unmap_single(ce->dev, rctx->addr_iv, rctx->ivlen, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) offset = areq->cryptlen - ivsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (rctx->op_dir & CE_DECRYPTION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) memcpy(areq->iv, rctx->backup_iv, ivsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) kfree_sensitive(rctx->backup_iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) ivsize, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) kfree(rctx->bounce_iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) theend_key:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) dma_unmap_single(ce->dev, rctx->addr_key, op->keylen, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) theend:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static int sun8i_ce_cipher_run(struct crypto_engine *engine, void *areq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct skcipher_request *breq = container_of(areq, struct skcipher_request, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(breq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct sun8i_ce_dev *ce = op->ce;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(breq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) int flow, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) flow = rctx->flow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) err = sun8i_ce_run_task(ce, flow, crypto_tfm_alg_name(breq->base.tfm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) local_bh_disable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) crypto_finalize_skcipher_request(engine, breq, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) local_bh_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) static int sun8i_ce_cipher_unprepare(struct crypto_engine *engine, void *async_req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct skcipher_request *areq = container_of(async_req, struct skcipher_request, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct sun8i_ce_dev *ce = op->ce;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct sun8i_ce_flow *chan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) struct ce_task *cet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) unsigned int ivsize, offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) int nr_sgs = rctx->nr_sgs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) int nr_sgd = rctx->nr_sgd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) int flow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) flow = rctx->flow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) chan = &ce->chanlist[flow];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) cet = chan->tl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) ivsize = crypto_skcipher_ivsize(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (areq->src == areq->dst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_BIDIRECTIONAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (nr_sgs > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) dma_unmap_sg(ce->dev, areq->dst, nr_sgd, DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) if (areq->iv && ivsize > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (cet->t_iv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) dma_unmap_single(ce->dev, rctx->addr_iv, rctx->ivlen, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) offset = areq->cryptlen - ivsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (rctx->op_dir & CE_DECRYPTION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) memcpy(areq->iv, rctx->backup_iv, ivsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) kfree_sensitive(rctx->backup_iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) ivsize, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) kfree(rctx->bounce_iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) dma_unmap_single(ce->dev, rctx->addr_key, op->keylen, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) int sun8i_ce_skdecrypt(struct skcipher_request *areq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) struct crypto_engine *engine;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) int e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) rctx->op_dir = CE_DECRYPTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (sun8i_ce_cipher_need_fallback(areq))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) return sun8i_ce_cipher_fallback(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) e = sun8i_ce_get_engine_number(op->ce);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) rctx->flow = e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) engine = op->ce->chanlist[e].engine;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return crypto_transfer_skcipher_request_to_engine(engine, areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) int sun8i_ce_skencrypt(struct skcipher_request *areq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) struct crypto_engine *engine;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) int e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) rctx->op_dir = CE_ENCRYPTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) if (sun8i_ce_cipher_need_fallback(areq))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return sun8i_ce_cipher_fallback(areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) e = sun8i_ce_get_engine_number(op->ce);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) rctx->flow = e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) engine = op->ce->chanlist[e].engine;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return crypto_transfer_skcipher_request_to_engine(engine, areq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) int sun8i_ce_cipher_init(struct crypto_tfm *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) struct sun8i_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct sun8i_ce_alg_template *algt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) const char *name = crypto_tfm_alg_name(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) struct crypto_skcipher *sktfm = __crypto_skcipher_cast(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) struct skcipher_alg *alg = crypto_skcipher_alg(sktfm);
^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) memset(op, 0, sizeof(struct sun8i_cipher_tfm_ctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) algt = container_of(alg, struct sun8i_ce_alg_template, alg.skcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) op->ce = algt->ce;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) op->fallback_tfm = crypto_alloc_skcipher(name, 0, CRYPTO_ALG_NEED_FALLBACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (IS_ERR(op->fallback_tfm)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) dev_err(op->ce->dev, "ERROR: Cannot allocate fallback for %s %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) name, PTR_ERR(op->fallback_tfm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) return PTR_ERR(op->fallback_tfm);
^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) sktfm->reqsize = sizeof(struct sun8i_cipher_req_ctx) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) crypto_skcipher_reqsize(op->fallback_tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) dev_info(op->ce->dev, "Fallback for %s is %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) crypto_tfm_alg_driver_name(&sktfm->base),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) crypto_tfm_alg_driver_name(crypto_skcipher_tfm(op->fallback_tfm)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) op->enginectx.op.do_one_request = sun8i_ce_cipher_run;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) op->enginectx.op.prepare_request = sun8i_ce_cipher_prepare;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) op->enginectx.op.unprepare_request = sun8i_ce_cipher_unprepare;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) err = pm_runtime_get_sync(op->ce->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) goto error_pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) error_pm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) pm_runtime_put_noidle(op->ce->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) crypto_free_skcipher(op->fallback_tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) void sun8i_ce_cipher_exit(struct crypto_tfm *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) struct sun8i_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) kfree_sensitive(op->key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) crypto_free_skcipher(op->fallback_tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) pm_runtime_put_sync_suspend(op->ce->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) int sun8i_ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) unsigned int keylen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) struct sun8i_ce_dev *ce = op->ce;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) switch (keylen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) case 128 / 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) case 192 / 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) case 256 / 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) dev_dbg(ce->dev, "ERROR: Invalid keylen %u\n", keylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) kfree_sensitive(op->key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) op->keylen = keylen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (!op->key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) crypto_skcipher_clear_flags(op->fallback_tfm, CRYPTO_TFM_REQ_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) crypto_skcipher_set_flags(op->fallback_tfm, tfm->base.crt_flags & CRYPTO_TFM_REQ_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) return crypto_skcipher_setkey(op->fallback_tfm, key, keylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) int sun8i_ce_des3_setkey(struct crypto_skcipher *tfm, const u8 *key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) unsigned int keylen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) err = verify_skcipher_des3_key(tfm, key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) kfree_sensitive(op->key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) op->keylen = keylen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) if (!op->key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) crypto_skcipher_clear_flags(op->fallback_tfm, CRYPTO_TFM_REQ_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) crypto_skcipher_set_flags(op->fallback_tfm, tfm->base.crt_flags & CRYPTO_TFM_REQ_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) return crypto_skcipher_setkey(op->fallback_tfm, key, keylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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