Adding upstream version 5.10.209.upstream/5.10.209upstream

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

1 files changed, 139 insertions, 0 deletions

diff --git a/drivers/s390/crypto/zcrypt_error.h b/drivers/s390/crypto/zcrypt_error.h
new file mode 100644
index 000000000..39e626e3a
--- /dev/null
+++ b/drivers/s390/crypto/zcrypt_error.h
@@ -0,0 +1,139 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ *  Copyright IBM Corp. 2001, 2006
+ *  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>
+ */
+
+#ifndef _ZCRYPT_ERROR_H_
+#define _ZCRYPT_ERROR_H_
+
+#include <linux/atomic.h>
+#include "zcrypt_debug.h"
+#include "zcrypt_api.h"
+#include "zcrypt_msgtype6.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_INVALID_SPECIAL_CMD	    0x41
+#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_INVALID_DOMAIN_PENDING  0x8A
+#define REP82_ERROR_FILTERED_BY_HYPERVISOR  0x8B
+#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_queue *zq,
+				struct ap_message *reply)
+{
+	struct error_hdr *ehdr = reply->msg;
+	int card = AP_QID_CARD(zq->queue->qid);
+	int queue = AP_QID_QUEUE(zq->queue->qid);
+
+	switch (ehdr->reply_code) {
+	case REP82_ERROR_INVALID_MSG_LEN:	 /* 0x23 */
+	case REP82_ERROR_RESERVD_FIELD:		 /* 0x24 */
+	case REP82_ERROR_FORMAT_FIELD:		 /* 0x29 */
+	case REP82_ERROR_MALFORMED_MSG:		 /* 0x40 */
+	case REP82_ERROR_INVALID_SPECIAL_CMD:	 /* 0x41 */
+	case REP82_ERROR_MESSAGE_LENGTH:	 /* 0x80 */
+	case REP82_ERROR_OPERAND_INVALID:	 /* 0x82 */
+	case REP82_ERROR_OPERAND_SIZE:		 /* 0x84 */
+	case REP82_ERROR_EVEN_MOD_IN_OPND:	 /* 0x85 */
+	case REP82_ERROR_INVALID_DOMAIN_PENDING: /* 0x8A */
+	case REP82_ERROR_FILTERED_BY_HYPERVISOR: /* 0x8B */
+	case REP82_ERROR_PACKET_TRUNCATED:	 /* 0xA0 */
+	case REP88_ERROR_MESSAGE_MALFORMD:	 /* 0x22 */
+	case REP88_ERROR_KEY_TYPE:		 /* 0x34 */
+		/* RY indicates malformed request */
+		ZCRYPT_DBF(DBF_WARN,
+			   "dev=%02x.%04x RY=0x%02x => rc=EINVAL\n",
+			   card, queue, ehdr->reply_code);
+		return -EINVAL;
+	case REP82_ERROR_MACHINE_FAILURE:	 /* 0x10 */
+	case REP82_ERROR_MESSAGE_TYPE:		 /* 0x20 */
+	case REP82_ERROR_TRANSPORT_FAIL:	 /* 0x90 */
+		/*
+		 * Msg to wrong type or card/infrastructure failure.
+		 * Trigger rescan of the ap bus, trigger retry request.
+		 */
+		atomic_set(&zcrypt_rescan_req, 1);
+		/* For type 86 response show the apfs value (failure reason) */
+		if (ehdr->reply_code == REP82_ERROR_TRANSPORT_FAIL &&
+		    ehdr->type == TYPE86_RSP_CODE) {
+			struct {
+				struct type86_hdr hdr;
+				struct type86_fmt2_ext fmt2;
+			} __packed * head = reply->msg;
+			unsigned int apfs = *((u32 *)head->fmt2.apfs);
+
+			ZCRYPT_DBF(DBF_WARN,
+				   "dev=%02x.%04x RY=0x%02x apfs=0x%x => bus rescan, rc=EAGAIN\n",
+				   card, queue, ehdr->reply_code, apfs);
+		} else
+			ZCRYPT_DBF(DBF_WARN,
+				   "dev=%02x.%04x RY=0x%02x => bus rescan, rc=EAGAIN\n",
+				   card, queue, ehdr->reply_code);
+		return -EAGAIN;
+	default:
+		/* Assume request is valid and a retry will be worth it */
+		ZCRYPT_DBF(DBF_WARN,
+			   "dev=%02x.%04x RY=0x%02x => rc=EAGAIN\n",
+			   card, queue, ehdr->reply_code);
+		return -EAGAIN;
+	}
+}
+
+#endif /* _ZCRYPT_ERROR_H_ */