Add Infineon v05 TPM driver

drivers/tpm/slb9635_i2c/tpm.h

+/*
+ * Copyright (C) 2011 Infineon Technologies
+ *
+ * Authors:
+ *
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org
+ *
+ * It is based on the Linux kernel driver tpm.c from Leendert van
+ * Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
+ *
+ * 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 of the
+ * License.
+ *
+ */
+
+#ifndef _TPM_H_
+#define _TPM_H_
+
+#include "compatibility.h"
+
+enum tpm_timeout {
+        TPM_TIMEOUT = 5,        /* msecs */
+};
+
+/* Index of fields in TPM command buffer */
+#define TPM_CMD_SIZE_BYTE 2
+#define TPM_CMD_ORDINAL_BYTE 6
+
+/* Index of Count field in TPM response buffer */
+#define TPM_RSP_SIZE_BYTE 2
+#define TPM_RSP_RC_BYTE 6
+
+struct tpm_chip;
+
+struct tpm_vendor_specific {
+        const u8 req_complete_mask;
+        const u8 req_complete_val;
+        const u8 req_canceled;
+
+        int irq;
+
+        int (*recv) (struct tpm_chip *, u8 *, size_t);
+        int (*send) (struct tpm_chip *, u8 *, size_t);
+        void (*cancel) (struct tpm_chip *);
+         u8(*status) (struct tpm_chip *);
+        int locality;
+        unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */
+        unsigned long duration[3];      /* jiffies */
+
+        int (*init) (struct device *);
+};
+
+struct tpm_chip {
+        int is_open;
+        struct tpm_vendor_specific vendor;
+};
+
+struct tpm_input_header {
+        __be16 tag;
+        __be32 length;
+        __be32 ordinal;
+} __attribute__ ((packed));
+
+struct tpm_output_header {
+        __be16 tag;
+        __be32 length;
+        __be32 return_code;
+} __attribute__ ((packed));
+
+struct timeout_t {
+        __be32 a;
+        __be32 b;
+        __be32 c;
+        __be32 d;
+} __attribute__ ((packed));
+
+struct duration_t {
+        __be32 tpm_short;
+        __be32 tpm_medium;
+        __be32 tpm_long;
+} __attribute__ ((packed));
+
+typedef union {
+        struct timeout_t timeout;
+        struct duration_t duration;
+} cap_t;
+
+struct tpm_getcap_params_in {
+        __be32 cap;
+        __be32 subcap_size;
+        __be32 subcap;
+} __attribute__ ((packed));
+
+struct tpm_getcap_params_out {
+        __be32 cap_size;
+        cap_t cap;
+} __attribute__ ((packed));
+
+typedef union {
+        struct tpm_input_header in;
+        struct tpm_output_header out;
+} tpm_cmd_header;
+
+typedef union {
+        struct tpm_getcap_params_out getcap_out;
+        struct tpm_getcap_params_in getcap_in;
+} tpm_cmd_params;
+
+struct tpm_cmd_t {
+        tpm_cmd_header header;
+        tpm_cmd_params params;
+} __attribute__ ((packed));
+
+
+/* ---------- Interface for tpm_tis_i2c ------------ */
+
+extern struct tpm_chip *tpm_register_hardware(struct device *,
+                                              const struct tpm_vendor_specific
+                                              *);
+
+
+/* ---------- Interface for TDDL ------------------- */
+
+/*
+ * Returns < 0 on error, 0 on success.
+ */
+extern int tpm_open(void);
+
+extern void tpm_close(void);
+
+/*
+ * Transmit bufsiz bytes out of buf to TPM and get results back in buf, too.
+ * Returns < 0 on error, 0 on success.
+ */
+extern ssize_t tpm_transmit(const unsigned char *buf, size_t bufsiz);
+
+#endif