Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 88 insertions, 0 deletions

diff --git a/drivers/crypto/vmx/vmx.c b/drivers/crypto/vmx/vmx.c
new file mode 100644
index 000000000..31a98dc6f
--- /dev/null
+++ b/drivers/crypto/vmx/vmx.c
@@ -0,0 +1,88 @@
+/**
+ * Routines supporting VMX instructions on the Power 8
+ *
+ * Copyright (C) 2015 International Business Machines Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 only.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Author: Marcelo Henrique Cerri <mhcerri@br.ibm.com>
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/err.h>
+#include <linux/cpufeature.h>
+#include <linux/crypto.h>
+#include <asm/cputable.h>
+#include <crypto/internal/hash.h>
+
+extern struct shash_alg p8_ghash_alg;
+extern struct crypto_alg p8_aes_alg;
+extern struct crypto_alg p8_aes_cbc_alg;
+extern struct crypto_alg p8_aes_ctr_alg;
+extern struct crypto_alg p8_aes_xts_alg;
+static struct crypto_alg *algs[] = {
+	&p8_aes_alg,
+	&p8_aes_cbc_alg,
+	&p8_aes_ctr_alg,
+	&p8_aes_xts_alg,
+	NULL,
+};
+
+int __init p8_init(void)
+{
+	int ret = 0;
+	struct crypto_alg **alg_it;
+
+	for (alg_it = algs; *alg_it; alg_it++) {
+		ret = crypto_register_alg(*alg_it);
+		printk(KERN_INFO "crypto_register_alg '%s' = %d\n",
+		       (*alg_it)->cra_name, ret);
+		if (ret) {
+			for (alg_it--; alg_it >= algs; alg_it--)
+				crypto_unregister_alg(*alg_it);
+			break;
+		}
+	}
+	if (ret)
+		return ret;
+
+	ret = crypto_register_shash(&p8_ghash_alg);
+	if (ret) {
+		for (alg_it = algs; *alg_it; alg_it++)
+			crypto_unregister_alg(*alg_it);
+	}
+	return ret;
+}
+
+void __exit p8_exit(void)
+{
+	struct crypto_alg **alg_it;
+
+	for (alg_it = algs; *alg_it; alg_it++) {
+		printk(KERN_INFO "Removing '%s'\n", (*alg_it)->cra_name);
+		crypto_unregister_alg(*alg_it);
+	}
+	crypto_unregister_shash(&p8_ghash_alg);
+}
+
+module_cpu_feature_match(PPC_MODULE_FEATURE_VEC_CRYPTO, p8_init);
+module_exit(p8_exit);
+
+MODULE_AUTHOR("Marcelo Cerri<mhcerri@br.ibm.com>");
+MODULE_DESCRIPTION("IBM VMX cryptographic acceleration instructions "
+		   "support on Power 8");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.0.0");