From 90dda520c1962d55a0e1d2571deed0d75fd6d6f1 Mon Sep 17 00:00:00 2001 From: Kylene Jo Hall Date: Sat, 22 Apr 2006 02:37:15 -0700 Subject: [PATCH] tpm: chip struct update To assist with chip management and better support the possibility of having multiple TPMs in the system of the same kind, the struct tpm_vendor_specific member of the tpm_chip was changed from a pointer to an instance. This patch changes that declaration and fixes up all accesses to the structure member except in tpm_infineon which is coming in a patch from Marcel Selhorst. Signed-off-by: Kylene Hall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/tpm/tpm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/char/tpm/tpm.h') diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index dec0224b4478..a203963efaab 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -81,7 +81,7 @@ struct tpm_chip { struct work_struct work; struct semaphore tpm_mutex; /* tpm is processing */ - struct tpm_vendor_specific *vendor; + struct tpm_vendor_specific vendor; struct dentry **bios_dir; -- cgit v1.2.3 From e0dd03caf20d040a0a86b6bd74028ec9bda545f5 Mon Sep 17 00:00:00 2001 From: Kylene Jo Hall Date: Sat, 22 Apr 2006 02:37:26 -0700 Subject: [PATCH] tpm: return chip from tpm_register_hardware Changes in the 1.2 TPM Specification make it necessary to update some fields of the chip structure in the initialization function after it is registered with tpm.c thus tpm_register_hardware was modified to return a pointer to the structure. This patch makes that change and the associated changes in tpm_atmel and tpm_nsc. The changes to tpm_infineon will be coming in a patch from Marcel Selhorst. Signed-off-by: Kylene Hall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/tpm/tpm.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/char/tpm/tpm.h') diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index a203963efaab..4f005345bf37 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -48,9 +48,9 @@ extern ssize_t tpm_store_cancel(struct device *, struct device_attribute *attr, struct tpm_chip; struct tpm_vendor_specific { - u8 req_complete_mask; - u8 req_complete_val; - u8 req_canceled; + const u8 req_complete_mask; + const u8 req_complete_val; + const u8 req_canceled; void __iomem *iobase; /* ioremapped address */ unsigned long base; /* TPM base address */ @@ -100,8 +100,8 @@ static inline void tpm_write_index(int base, int index, int value) outb(value & 0xFF, base+1); } -extern int tpm_register_hardware(struct device *, - struct tpm_vendor_specific *); +extern struct tpm_chip* tpm_register_hardware(struct device *, + const struct tpm_vendor_specific *); extern int tpm_open(struct inode *, struct file *); extern int tpm_release(struct inode *, struct file *); extern ssize_t tpm_write(struct file *, const char __user *, size_t, -- cgit v1.2.3 From 9e18ee19179a7742999d0e2d4bfcba75b5562439 Mon Sep 17 00:00:00 2001 From: Kylene Jo Hall Date: Sat, 22 Apr 2006 02:37:38 -0700 Subject: [PATCH] tpm: command duration update With the TPM 1.2 Specification, each command is classified as short, medium or long and the chip tells you the maximum amount of time for a response to each class of command. This patch provides and array of the classifications and a function to determine how long the response should be waited for. Also, it uses that information in the command processing to determine how long to poll for. The function is exported so the 1.2 driver can use the functionality to determine how long to wait for a DataAvailable interrupt if interrupts are being used. Signed-off-by: Kylene Hall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/tpm/tpm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/char/tpm/tpm.h') diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 4f005345bf37..1d28485b8fb3 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -63,6 +63,7 @@ struct tpm_vendor_specific { u8 (*status) (struct tpm_chip *); struct miscdevice miscdev; struct attribute_group *attr_group; + u32 duration[3]; }; struct tpm_chip { @@ -100,6 +101,7 @@ static inline void tpm_write_index(int base, int index, int value) outb(value & 0xFF, base+1); } +extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32); extern struct tpm_chip* tpm_register_hardware(struct device *, const struct tpm_vendor_specific *); extern int tpm_open(struct inode *, struct file *); -- cgit v1.2.3 From 08e96e486dd1345ae0ad70247387d0d4fd346889 Mon Sep 17 00:00:00 2001 From: Kylene Jo Hall Date: Sat, 22 Apr 2006 02:37:50 -0700 Subject: [PATCH] tpm: new 1.2 sysfs files Many of the sysfs files were calling the TPM_GetCapability command with array. Since for 1.2 more sysfs files of this type are coming I am generalizing the array so there can be one array and the unique parts can be filled in just before the command is called. This updated version of the patch breaks the multi-value sysfs file into separate files pointed out by Greg. It also addresses the code redundancy and ugliness in the tpm_show_* functions pointed out on another patch by Dave Hansen. Signed-off-by: Kylene Hall Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/tpm/tpm.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/char/tpm/tpm.h') diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 1d28485b8fb3..75d105c4e65d 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -42,8 +42,18 @@ extern ssize_t tpm_show_pcrs(struct device *, struct device_attribute *attr, char *); extern ssize_t tpm_show_caps(struct device *, struct device_attribute *attr, char *); +extern ssize_t tpm_show_caps_1_2(struct device *, struct device_attribute *attr, + char *); extern ssize_t tpm_store_cancel(struct device *, struct device_attribute *attr, const char *, size_t); +extern ssize_t tpm_show_enabled(struct device *, struct device_attribute *attr, + char *); +extern ssize_t tpm_show_active(struct device *, struct device_attribute *attr, + char *); +extern ssize_t tpm_show_owned(struct device *, struct device_attribute *attr, + char *); +extern ssize_t tpm_show_temp_deactivated(struct device *, + struct device_attribute *attr, char *); struct tpm_chip; @@ -63,6 +73,7 @@ struct tpm_vendor_specific { u8 (*status) (struct tpm_chip *); struct miscdevice miscdev; struct attribute_group *attr_group; + u32 timeout_a, timeout_b, timeout_c, timeout_d; u32 duration[3]; }; @@ -101,6 +112,9 @@ static inline void tpm_write_index(int base, int index, int value) outb(value & 0xFF, base+1); } +extern void tpm_get_timeouts(struct tpm_chip *); +extern void tpm_gen_interrupt(struct tpm_chip *); +extern void tpm_continue_selftest(struct tpm_chip *); extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32); extern struct tpm_chip* tpm_register_hardware(struct device *, const struct tpm_vendor_specific *); -- cgit v1.2.3 From 27084efee0c3dc0eb15b5ed750aa9f1adb3983c3 Mon Sep 17 00:00:00 2001 From: Leendert van Doorn Date: Sat, 22 Apr 2006 02:38:03 -0700 Subject: [PATCH] tpm: driver for next generation TPM chips The driver for the next generation of TPM chips version 1.2 including support for interrupts. The Trusted Computing Group has written the TPM Interface Specification (TIS) which defines a common interface for all manufacturer's 1.2 TPM's thus the name tpm_tis. Signed-off-by: Leendert van Doorn Signed-off-by: Kylene Hall Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/tpm/tpm.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/char/tpm/tpm.h') diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 75d105c4e65d..24541a556d02 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -64,6 +64,8 @@ struct tpm_vendor_specific { void __iomem *iobase; /* ioremapped address */ unsigned long base; /* TPM base address */ + int irq; + int region_size; int have_region; @@ -73,8 +75,13 @@ struct tpm_vendor_specific { u8 (*status) (struct tpm_chip *); struct miscdevice miscdev; struct attribute_group *attr_group; + struct list_head list; + int locality; u32 timeout_a, timeout_b, timeout_c, timeout_d; u32 duration[3]; + + wait_queue_head_t read_queue; + wait_queue_head_t int_queue; }; struct tpm_chip { @@ -100,6 +107,8 @@ struct tpm_chip { struct list_head list; }; +#define to_tpm_chip(n) container_of(n, struct tpm_chip, vendor) + static inline int tpm_read_index(int base, int index) { outb(index, base); -- cgit v1.2.3 From 36b20020e537036c4f9eb5b69140c88ead5da7dc Mon Sep 17 00:00:00 2001 From: Kylene Jo Hall Date: Sat, 22 Apr 2006 02:38:19 -0700 Subject: [PATCH] tpm: msecs_to_jiffies cleanups The timeout and duration values used in the tpm driver are not exposed to userspace. This patch converts the storage units to jiffies with msecs_to_jiffies. They were always being used in jiffies so this simplifies things removing the need for calculation all over the place. The change necessitated a type change in the tpm_chip struct to hold jiffies. Signed-off-by: Kylie Hall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/tpm/tpm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/char/tpm/tpm.h') diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 24541a556d02..54a4c804e25f 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -77,8 +77,8 @@ struct tpm_vendor_specific { struct attribute_group *attr_group; struct list_head list; int locality; - u32 timeout_a, timeout_b, timeout_c, timeout_d; - u32 duration[3]; + unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */ + unsigned long duration[3]; /* jiffies */ wait_queue_head_t read_queue; wait_queue_head_t int_queue; -- cgit v1.2.3