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path: root/drivers/crypto/padlock-generic.c
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Diffstat (limited to 'drivers/crypto/padlock-generic.c')
-rw-r--r--drivers/crypto/padlock-generic.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/crypto/padlock-generic.c b/drivers/crypto/padlock-generic.c
new file mode 100644
index 000000000000..18cf0e8274a7
--- /dev/null
+++ b/drivers/crypto/padlock-generic.c
@@ -0,0 +1,63 @@
+/*
+ * Cryptographic API.
+ *
+ * Support for VIA PadLock hardware crypto engine.
+ *
+ * Copyright (c) 2004 Michal Ludvig <michal@logix.cz>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/crypto.h>
+#include <asm/byteorder.h>
+#include "padlock.h"
+
+static int __init
+padlock_init(void)
+{
+ int ret = -ENOSYS;
+
+ if (!cpu_has_xcrypt) {
+ printk(KERN_ERR PFX "VIA PadLock not detected.\n");
+ return -ENODEV;
+ }
+
+ if (!cpu_has_xcrypt_enabled) {
+ printk(KERN_ERR PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
+ return -ENODEV;
+ }
+
+#ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES
+ if ((ret = padlock_init_aes())) {
+ printk(KERN_ERR PFX "VIA PadLock AES initialization failed.\n");
+ return ret;
+ }
+#endif
+
+ if (ret == -ENOSYS)
+ printk(KERN_ERR PFX "Hmm, VIA PadLock was compiled without any algorithm.\n");
+
+ return ret;
+}
+
+static void __exit
+padlock_fini(void)
+{
+#ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES
+ padlock_fini_aes();
+#endif
+}
+
+module_init(padlock_init);
+module_exit(padlock_fini);
+
+MODULE_DESCRIPTION("VIA PadLock crypto engine support.");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Michal Ludvig");