gmac get mac form eeprom

hc

2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/crypto/omap-crypto.c
..
..
@@ -1,12 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * OMAP Crypto driver common support routines.
3
4
  *
4
5
  * Copyright (c) 2017 Texas Instruments Incorporated
5
6
  *   Tero Kristo <t-kristo@ti.com>
6
- *
7
- * This program is free software; you can redistribute it and/or modify
8
- * it under the terms of the GNU General Public License version 2 as published
9
- * by the Free Software Foundation.
10
7
  */
11
8
 
12
9
 #include <linux/module.h>
..
..
@@ -157,6 +154,47 @@
157
154
 }
158
155
 EXPORT_SYMBOL_GPL(omap_crypto_align_sg);
159
156
 
157
+static void omap_crypto_copy_data(struct scatterlist *src,
158
+				  struct scatterlist *dst,
159
+				  int offset, int len)
160
+{
161
+	int amt;
162
+	void *srcb, *dstb;
163
+	int srco = 0, dsto = offset;
164
+
165
+	while (src && dst && len) {
166
+		if (srco >= src->length) {
167
+			srco -= src->length;
168
+			src = sg_next(src);
169
+			continue;
170
+		}
171
+
172
+		if (dsto >= dst->length) {
173
+			dsto -= dst->length;
174
+			dst = sg_next(dst);
175
+			continue;
176
+		}
177
+
178
+		amt = min(src->length - srco, dst->length - dsto);
179
+		amt = min(len, amt);
180
+
181
+		srcb = kmap_atomic(sg_page(src)) + srco + src->offset;
182
+		dstb = kmap_atomic(sg_page(dst)) + dsto + dst->offset;
183
+
184
+		memcpy(dstb, srcb, amt);
185
+
186
+		if (!PageSlab(sg_page(dst)))
187
+			flush_kernel_dcache_page(sg_page(dst));
188
+
189
+		kunmap_atomic(srcb);
190
+		kunmap_atomic(dstb);
191
+
192
+		srco += amt;
193
+		dsto += amt;
194
+		len -= amt;
195
+	}
196
+}
197
+
160
198
 void omap_crypto_cleanup(struct scatterlist *sg, struct scatterlist *orig,
161
199
 			 int offset, int len, u8 flags_shift,
162
200
 			 unsigned long flags)
..
..
@@ -174,7 +212,7 @@
174
212
 	pages = get_order(len);
175
213
 
176
214
 	if (orig && (flags & OMAP_CRYPTO_COPY_MASK))
177
-		scatterwalk_map_and_copy(buf, orig, offset, len, 1);
215
+		omap_crypto_copy_data(sg, orig, offset, len);
178
216
 
179
217
 	if (flags & OMAP_CRYPTO_DATA_COPIED)
180
218
 		free_pages((unsigned long)buf, pages);