This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / s390 / crypto / zcrypt_error.h

diff --git a/drivers/s390/crypto/zcrypt_error.h b/drivers/s390/crypto/zcrypt_error.h
new file mode 100644 (file)
index 0000000..2cb616b
--- /dev/null
+++ b/drivers/s390/crypto/zcrypt_error.h
@@ -0,0 +1,133 @@
+/*
+ *  linux/drivers/s390/crypto/zcrypt_error.h
+ *
+ *  zcrypt 2.1.0
+ *
+ *  Copyright (C)  2001, 2006 IBM Corporation
+ *  Author(s): Robert Burroughs
+ *            Eric Rossman (edrossma@us.ibm.com)
+ *
+ *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ *  Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * 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, or (at your option)
+ * any later version.
+ *
+ * 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.
+ */
+
+#ifndef _ZCRYPT_ERROR_H_
+#define _ZCRYPT_ERROR_H_
+
+#include "zcrypt_api.h"
+
+/**
+ * Reply Messages
+ *
+ * Error reply messages are of two types:
+ *    82:  Error (see below)
+ *    88:  Error (see below)
+ * Both type 82 and type 88 have the same structure in the header.
+ *
+ * Request reply messages are of three known types:
+ *    80:  Reply from a Type 50 Request (see CEX2A-RELATED STRUCTS)
+ *    84:  Reply from a Type 4 Request (see PCICA-RELATED STRUCTS)
+ *    86:  Reply from a Type 6 Request (see PCICC/PCIXCC/CEX2C-RELATED STRUCTS)
+ *
+ */
+struct error_hdr {
+       unsigned char reserved1;        /* 0x00                 */
+       unsigned char type;             /* 0x82 or 0x88         */
+       unsigned char reserved2[2];     /* 0x0000               */
+       unsigned char reply_code;       /* reply code           */
+       unsigned char reserved3[3];     /* 0x000000             */
+};
+
+#define TYPE82_RSP_CODE 0x82
+#define TYPE88_RSP_CODE 0x88
+
+#define REP82_ERROR_MACHINE_FAILURE  0x10
+#define REP82_ERROR_PREEMPT_FAILURE  0x12
+#define REP82_ERROR_CHECKPT_FAILURE  0x14
+#define REP82_ERROR_MESSAGE_TYPE     0x20
+#define REP82_ERROR_INVALID_COMM_CD  0x21      /* Type 84      */
+#define REP82_ERROR_INVALID_MSG_LEN  0x23
+#define REP82_ERROR_RESERVD_FIELD    0x24      /* was 0x50     */
+#define REP82_ERROR_FORMAT_FIELD     0x29
+#define REP82_ERROR_INVALID_COMMAND  0x30
+#define REP82_ERROR_MALFORMED_MSG    0x40
+#define REP82_ERROR_RESERVED_FIELDO  0x50      /* old value    */
+#define REP82_ERROR_WORD_ALIGNMENT   0x60
+#define REP82_ERROR_MESSAGE_LENGTH   0x80
+#define REP82_ERROR_OPERAND_INVALID  0x82
+#define REP82_ERROR_OPERAND_SIZE     0x84
+#define REP82_ERROR_EVEN_MOD_IN_OPND 0x85
+#define REP82_ERROR_RESERVED_FIELD   0x88
+#define REP82_ERROR_TRANSPORT_FAIL   0x90
+#define REP82_ERROR_PACKET_TRUNCATED 0xA0
+#define REP82_ERROR_ZERO_BUFFER_LEN  0xB0
+
+#define REP88_ERROR_MODULE_FAILURE   0x10
+
+#define REP88_ERROR_MESSAGE_TYPE     0x20
+#define REP88_ERROR_MESSAGE_MALFORMD 0x22
+#define REP88_ERROR_MESSAGE_LENGTH   0x23
+#define REP88_ERROR_RESERVED_FIELD   0x24
+#define REP88_ERROR_KEY_TYPE        0x34
+#define REP88_ERROR_INVALID_KEY      0x82      /* CEX2A        */
+#define REP88_ERROR_OPERAND         0x84       /* CEX2A        */
+#define REP88_ERROR_OPERAND_EVEN_MOD 0x85      /* CEX2A        */
+
+static inline int convert_error(struct zcrypt_device *zdev,
+                               struct ap_message *reply)
+{
+       struct error_hdr *ehdr = reply->message;
+
+       PRINTK("Hardware error : Type %02x Message Header: %08x%08x\n",
+              ehdr->type, *(unsigned int *) reply->message,
+              *(unsigned int *) (reply->message + 4));
+
+       switch (ehdr->reply_code) {
+       case REP82_ERROR_OPERAND_INVALID:
+       case REP82_ERROR_OPERAND_SIZE:
+       case REP82_ERROR_EVEN_MOD_IN_OPND:
+       case REP88_ERROR_MESSAGE_MALFORMD:
+       //   REP88_ERROR_INVALID_KEY            // '82' CEX2A
+       //   REP88_ERROR_OPERAND                // '84' CEX2A
+       //   REP88_ERROR_OPERAND_EVEN_MOD       // '85' CEX2A
+               /* Invalid input data. */
+               return -EINVAL;
+       case REP82_ERROR_MESSAGE_TYPE:
+       //   REP88_ERROR_MESSAGE_TYPE           // '20' CEX2A
+               /**
+                * To sent a message of the wrong type is a bug in the
+                * device driver. Warn about it, disable the device
+                * and then repeat the request.
+                */
+               WARN_ON(1);
+               zdev->online = 0;
+               return -EAGAIN;
+       case REP82_ERROR_TRANSPORT_FAIL:
+       case REP82_ERROR_MACHINE_FAILURE:
+       //   REP88_ERROR_MODULE_FAILURE         // '10' CEX2A
+               /* If a card fails disable it and repeat the request. */
+               zdev->online = 0;
+               return -EAGAIN;
+       default:
+               PRINTKW("unknown type %02x reply code = %d\n",
+                       ehdr->type, ehdr->reply_code);
+               zdev->online = 0;
+               return -EAGAIN; /* repeat the request on a different device. */
+       }
+}
+
+#endif /* _ZCRYPT_ERROR_H_ */