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TPM: sysfs functions consolidation

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According to Dave Hansen's comments on the tpm_show_*, some of these functions
present a pattern when allocating data[] memory space and also when setting its
content. A new function was created so that this pattern could be consolidated.
Also, replaced the data[] command vectors and its indexes by meaningful structures
as pointed out by Matt Helsley too.

Signed-off-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Rajiv Andrade
2009-02-02 15:23:43 -02:00
committed by James Morris
parent faa3aad75a
commit 0883743825
2 changed files with 269 additions and 272 deletions
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124
drivers/char/tpm/tpm.h
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@@ -123,6 +123,130 @@ static inline void tpm_write_index(int base, int index, int value)
outb(index, base);
outb(value & 0xFF, base+1);
}
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 stclear_flags_t {
__be16 tag;
u8 deactivated;
u8 disableForceClear;
u8 physicalPresence;
u8 physicalPresenceLock;
u8 bGlobalLock;
}__attribute__((packed));
struct tpm_version_t {
u8 Major;
u8 Minor;
u8 revMajor;
u8 revMinor;
}__attribute__((packed));
struct tpm_version_1_2_t {
__be16 tag;
u8 Major;
u8 Minor;
u8 revMajor;
u8 revMinor;
}__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));
struct permanent_flags_t {
__be16 tag;
u8 disable;
u8 ownership;
u8 deactivated;
u8 readPubek;
u8 disableOwnerClear;
u8 allowMaintenance;
u8 physicalPresenceLifetimeLock;
u8 physicalPresenceHWEnable;
u8 physicalPresenceCMDEnable;
u8 CEKPUsed;
u8 TPMpost;
u8 TPMpostLock;
u8 FIPS;
u8 operator;
u8 enableRevokeEK;
u8 nvLocked;
u8 readSRKPub;
u8 tpmEstablished;
u8 maintenanceDone;
u8 disableFullDALogicInfo;
}__attribute__((packed));
typedef union {
struct permanent_flags_t perm_flags;
struct stclear_flags_t stclear_flags;
bool owned;
__be32 num_pcrs;
struct tpm_version_t tpm_version;
struct tpm_version_1_2_t tpm_version_1_2;
__be32 manufacturer_id;
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));
struct tpm_readpubek_params_out {
u8 algorithm[4];
u8 encscheme[2];
u8 sigscheme[2];
u8 parameters[12]; /*assuming RSA*/
__be32 keysize;
u8 modulus[256];
u8 checksum[20];
}__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_readpubek_params_out readpubek_out;
u8 readpubek_out_buffer[sizeof(struct tpm_readpubek_params_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));
ssize_t tpm_getcap(struct device *, __be32, cap_t *, const char *);
extern void tpm_get_timeouts(struct tpm_chip *);
extern void tpm_gen_interrupt(struct tpm_chip *);