Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * SHA-256 routines supporting the Power 7+ Nest Accelerators driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2011-2012 International Business Machines Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Author: Kent Yoder <yoder1@us.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <crypto/internal/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <crypto/sha.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <asm/vio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include "nx_csbcpb.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include "nx.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) static int nx_crypto_ctx_sha256_init(struct crypto_tfm *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	err = nx_crypto_ctx_sha_init(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	nx_ctx_init(nx_ctx, HCOP_FC_SHA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	nx_ctx->ap = &nx_ctx->props[NX_PROPS_SHA256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	NX_CPB_SET_DIGEST_SIZE(nx_ctx->csbcpb, NX_DS_SHA256);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	return 0;
^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) static int nx_sha256_init(struct shash_desc *desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct sha256_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	memset(sctx, 0, sizeof *sctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	sctx->state[0] = __cpu_to_be32(SHA256_H0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	sctx->state[1] = __cpu_to_be32(SHA256_H1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	sctx->state[2] = __cpu_to_be32(SHA256_H2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	sctx->state[3] = __cpu_to_be32(SHA256_H3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	sctx->state[4] = __cpu_to_be32(SHA256_H4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	sctx->state[5] = __cpu_to_be32(SHA256_H5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	sctx->state[6] = __cpu_to_be32(SHA256_H6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	sctx->state[7] = __cpu_to_be32(SHA256_H7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	sctx->count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) static int nx_sha256_update(struct shash_desc *desc, const u8 *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 			    unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	struct sha256_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	struct nx_sg *out_sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	u64 to_process = 0, leftover, total;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	unsigned long irq_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	int data_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	u32 max_sg_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	u64 buf_len = (sctx->count % SHA256_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	spin_lock_irqsave(&nx_ctx->lock, irq_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	/* 2 cases for total data len:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	 *  1: < SHA256_BLOCK_SIZE: copy into state, return 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	 *  2: >= SHA256_BLOCK_SIZE: process X blocks, copy in leftover
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	total = (sctx->count % SHA256_BLOCK_SIZE) + len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	if (total < SHA256_BLOCK_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		memcpy(sctx->buf + buf_len, data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		sctx->count += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	memcpy(csbcpb->cpb.sha256.message_digest, sctx->state, SHA256_DIGEST_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	max_sg_len = min_t(u64, nx_ctx->ap->sglen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 			nx_driver.of.max_sg_len/sizeof(struct nx_sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	max_sg_len = min_t(u64, max_sg_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			nx_ctx->ap->databytelen/NX_PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	data_len = SHA256_DIGEST_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *)sctx->state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 				  &data_len, max_sg_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	if (data_len != SHA256_DIGEST_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		int used_sgs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		struct nx_sg *in_sg = nx_ctx->in_sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		if (buf_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			data_len = buf_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 			in_sg = nx_build_sg_list(in_sg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 						 (u8 *) sctx->buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 						 &data_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 						 max_sg_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 			if (data_len != buf_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 				rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 				goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 			used_sgs = in_sg - nx_ctx->in_sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		/* to_process: SHA256_BLOCK_SIZE aligned chunk to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		 * processed in this iteration. This value is restricted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		 * by sg list limits and number of sgs we already used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		 * for leftover data. (see above)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		 * In ideal case, we could allow NX_PAGE_SIZE * max_sg_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		 * but because data may not be aligned, we need to account
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		 * for that too. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		to_process = min_t(u64, total,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 			(max_sg_len - 1 - used_sgs) * NX_PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		to_process = to_process & ~(SHA256_BLOCK_SIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		data_len = to_process - buf_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		in_sg = nx_build_sg_list(in_sg, (u8 *) data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 					 &data_len, max_sg_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		to_process = data_len + buf_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		leftover = total - to_process;
^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) 		 * we've hit the nx chip previously and we're updating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		 * again, so copy over the partial digest.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		memcpy(csbcpb->cpb.sha256.input_partial_digest,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 			       csbcpb->cpb.sha256.message_digest,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 			       SHA256_DIGEST_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		if (!nx_ctx->op.inlen || !nx_ctx->op.outlen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 			rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		atomic_inc(&(nx_ctx->stats->sha256_ops));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		total -= to_process;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		data += to_process - buf_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		buf_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	} while (leftover >= SHA256_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	/* copy the leftover back into the state struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	if (leftover)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		memcpy(sctx->buf, data, leftover);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	sctx->count += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	memcpy(sctx->state, csbcpb->cpb.sha256.message_digest, SHA256_DIGEST_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	spin_unlock_irqrestore(&nx_ctx->lock, irq_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static int nx_sha256_final(struct shash_desc *desc, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	struct sha256_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(&desc->tfm->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	struct nx_csbcpb *csbcpb = (struct nx_csbcpb *)nx_ctx->csbcpb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	struct nx_sg *in_sg, *out_sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	unsigned long irq_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	u32 max_sg_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	spin_lock_irqsave(&nx_ctx->lock, irq_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	max_sg_len = min_t(u64, nx_ctx->ap->sglen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 			nx_driver.of.max_sg_len/sizeof(struct nx_sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	max_sg_len = min_t(u64, max_sg_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 			nx_ctx->ap->databytelen/NX_PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	/* final is represented by continuing the operation and indicating that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	 * this is not an intermediate operation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	if (sctx->count >= SHA256_BLOCK_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		/* we've hit the nx chip previously, now we're finalizing,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		 * so copy over the partial digest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		memcpy(csbcpb->cpb.sha256.input_partial_digest, sctx->state, SHA256_DIGEST_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		NX_CPB_FDM(csbcpb) &= ~NX_FDM_INTERMEDIATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		NX_CPB_FDM(csbcpb) &= ~NX_FDM_INTERMEDIATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		NX_CPB_FDM(csbcpb) &= ~NX_FDM_CONTINUATION;
^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) 	csbcpb->cpb.sha256.message_bit_length = (u64) (sctx->count * 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	len = sctx->count & (SHA256_BLOCK_SIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *) sctx->buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 				 &len, max_sg_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	if (len != (sctx->count & (SHA256_BLOCK_SIZE - 1))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	len = SHA256_DIGEST_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	out_sg = nx_build_sg_list(nx_ctx->out_sg, out, &len, max_sg_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	if (len != SHA256_DIGEST_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	if (!nx_ctx->op.outlen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	atomic_inc(&(nx_ctx->stats->sha256_ops));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	atomic64_add(sctx->count, &(nx_ctx->stats->sha256_bytes));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	memcpy(out, csbcpb->cpb.sha256.message_digest, SHA256_DIGEST_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	spin_unlock_irqrestore(&nx_ctx->lock, irq_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static int nx_sha256_export(struct shash_desc *desc, void *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	struct sha256_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	memcpy(out, sctx, sizeof(*sctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static int nx_sha256_import(struct shash_desc *desc, const void *in)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	struct sha256_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	memcpy(sctx, in, sizeof(*sctx));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct shash_alg nx_shash_sha256_alg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	.digestsize = SHA256_DIGEST_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	.init       = nx_sha256_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	.update     = nx_sha256_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	.final      = nx_sha256_final,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	.export     = nx_sha256_export,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	.import     = nx_sha256_import,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	.descsize   = sizeof(struct sha256_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	.statesize  = sizeof(struct sha256_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	.base       = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 		.cra_name        = "sha256",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		.cra_driver_name = "sha256-nx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		.cra_priority    = 300,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		.cra_blocksize   = SHA256_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		.cra_module      = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		.cra_ctxsize     = sizeof(struct nx_crypto_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 		.cra_init        = nx_crypto_ctx_sha256_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		.cra_exit        = nx_crypto_ctx_exit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) };