ia64/xen-unstable

view linux-2.6-xen-sparse/drivers/char/tpm/tpm.h @ 9296:f85bb99187bf

Update interface documentation to include sched_op_new hypercall
and clean up the style a bit. Also clean up the sched_op_new
description in the sched.h public header.

Signed-off-by: Keir Fraser <keir@xensource.com>
author kaf24@firebug.cl.cam.ac.uk
date Wed Mar 15 19:19:22 2006 +0100 (2006-03-15)
parents 2401f414d1ad
children da8da6e1e1d6
line source
1 /*
2 * Copyright (C) 2004 IBM Corporation
3 *
4 * Authors:
5 * Leendert van Doorn <leendert@watson.ibm.com>
6 * Dave Safford <safford@watson.ibm.com>
7 * Reiner Sailer <sailer@watson.ibm.com>
8 * Kylene Hall <kjhall@us.ibm.com>
9 *
10 * Maintained by: <tpmdd_devel@lists.sourceforge.net>
11 *
12 * Device driver for TCG/TCPA TPM (trusted platform module).
13 * Specifications at www.trustedcomputinggroup.org
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License as
17 * published by the Free Software Foundation, version 2 of the
18 * License.
19 *
20 */
21 #include <linux/module.h>
22 #include <linux/pci.h>
23 #include <linux/delay.h>
24 #include <linux/fs.h>
25 #include <linux/miscdevice.h>
26 #include <linux/platform_device.h>
28 enum tpm_timeout {
29 TPM_TIMEOUT = 5, /* msecs */
30 };
32 /* TPM addresses */
33 enum tpm_addr {
34 TPM_SUPERIO_ADDR = 0x2E,
35 TPM_ADDR = 0x4E,
36 };
38 extern ssize_t tpm_show_pubek(struct device *, struct device_attribute *attr,
39 char *);
40 extern ssize_t tpm_show_pcrs(struct device *, struct device_attribute *attr,
41 char *);
42 extern ssize_t tpm_show_caps(struct device *, struct device_attribute *attr,
43 char *);
44 extern ssize_t tpm_store_cancel(struct device *, struct device_attribute *attr,
45 const char *, size_t);
47 struct tpm_chip;
49 struct tpm_vendor_specific {
50 u8 req_complete_mask;
51 u8 req_complete_val;
52 u8 req_canceled;
53 u32 buffersize;
54 void __iomem *iobase; /* ioremapped address */
55 unsigned long base; /* TPM base address */
57 int region_size;
58 int have_region;
60 int (*recv) (struct tpm_chip *, u8 *, size_t);
61 int (*send) (struct tpm_chip *, u8 *, size_t);
62 void (*cancel) (struct tpm_chip *);
63 u8 (*status) (struct tpm_chip *);
64 struct miscdevice miscdev;
65 struct attribute_group *attr_group;
66 };
68 struct tpm_chip {
69 struct device *dev; /* Device stuff */
71 int dev_num; /* /dev/tpm# */
72 int num_opens; /* only one allowed */
73 int time_expired;
75 /* Data passed to and from the tpm via the read/write calls */
76 u8 *data_buffer;
77 atomic_t data_pending;
78 atomic_t data_position;
79 struct semaphore buffer_mutex;
81 struct timer_list user_read_timer; /* user needs to claim result */
82 struct work_struct work;
83 struct semaphore tpm_mutex; /* tpm is processing */
85 struct tpm_vendor_specific *vendor;
87 struct dentry **bios_dir;
89 struct list_head list;
90 };
92 static inline int tpm_read_index(int base, int index)
93 {
94 outb(index, base);
95 return inb(base+1) & 0xFF;
96 }
98 static inline void tpm_write_index(int base, int index, int value)
99 {
100 outb(index, base);
101 outb(value & 0xFF, base+1);
102 }
104 static inline u32 get_chip_buffersize(struct tpm_chip *chip)
105 {
106 return chip->vendor->buffersize;
107 }
109 extern int tpm_register_hardware(struct device *,
110 struct tpm_vendor_specific *);
111 extern int tpm_open(struct inode *, struct file *);
112 extern int tpm_release(struct inode *, struct file *);
113 extern ssize_t tpm_write(struct file *, const char __user *, size_t,
114 loff_t *);
115 extern ssize_t tpm_read(struct file *, char __user *, size_t, loff_t *);
116 extern void tpm_remove_hardware(struct device *);
117 extern int tpm_pm_suspend(struct device *, pm_message_t);
118 extern int tpm_pm_resume(struct device *);
120 #ifdef CONFIG_ACPI
121 extern struct dentry ** tpm_bios_log_setup(char *);
122 extern void tpm_bios_log_teardown(struct dentry **);
123 #else
124 static inline struct dentry* tpm_bios_log_setup(char *name)
125 {
126 return NULL;
127 }
128 static inline void tpm_bios_log_teardown(struct dentry **dir)
129 {
130 }
131 #endif