| Message ID | 20181019182307.17745-3-tomas.winkler@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | tpm: separate tpm 1.x and tpm 2.x commands | expand |
On Fri, 19 Oct 2018, Tomas Winkler wrote: > 1. TPM2_CC_LAST has moved from 182 to 193 > 2. Convert tpm2_ordinal_duration from an array into a switch statement, > as there are not so many commands that require special duration > relative to a number of commands, the switch statement function > is called tpm2_ordinal_duration_index(). > 3. Fix kdoc comments for tpm2_calc_ordinal_duration(). > > > Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> > Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > --- > V2-V3: Rebase. > V4: 1. Fix kdoc > 2. Rename tpm2_ordinal_duration() to tpm2_ordinal_duration_index() > 3. Move the two functions close to each other in the file. > V5: Adjust the kdoc to the new standard. > V6: Remove redundant comma in the kdoc. > V7: Resend. > > drivers/char/tpm/tpm.h | 41 +++++--- > drivers/char/tpm/tpm2-cmd.c | 241 +++++++++++++++++--------------------------- > 2 files changed, 118 insertions(+), 164 deletions(-) > > diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h > index f20dc8ece348..0f08518b525d 100644 > --- a/drivers/char/tpm/tpm.h > +++ b/drivers/char/tpm/tpm.h > @@ -134,22 +134,31 @@ enum tpm2_algorithms { > }; > > enum tpm2_command_codes { > - TPM2_CC_FIRST = 0x011F, > - TPM2_CC_CREATE_PRIMARY = 0x0131, > - TPM2_CC_SELF_TEST = 0x0143, > - TPM2_CC_STARTUP = 0x0144, > - TPM2_CC_SHUTDOWN = 0x0145, > - TPM2_CC_CREATE = 0x0153, > - TPM2_CC_LOAD = 0x0157, > - TPM2_CC_UNSEAL = 0x015E, > - TPM2_CC_CONTEXT_LOAD = 0x0161, > - TPM2_CC_CONTEXT_SAVE = 0x0162, > - TPM2_CC_FLUSH_CONTEXT = 0x0165, > - TPM2_CC_GET_CAPABILITY = 0x017A, > - TPM2_CC_GET_RANDOM = 0x017B, > - TPM2_CC_PCR_READ = 0x017E, > - TPM2_CC_PCR_EXTEND = 0x0182, > - TPM2_CC_LAST = 0x018F, > + TPM2_CC_FIRST = 0x011F, > + TPM2_CC_HIERARCHY_CONTROL = 0x0121, > + TPM2_CC_HIERARCHY_CHANGE_AUTH = 0x0129, > + TPM2_CC_CREATE_PRIMARY = 0x0131, > + TPM2_CC_SEQUENCE_COMPLETE = 0x013E, > + TPM2_CC_SELF_TEST = 0x0143, > + TPM2_CC_STARTUP = 0x0144, > + TPM2_CC_SHUTDOWN = 0x0145, > + TPM2_CC_NV_READ = 0x014E, > + TPM2_CC_CREATE = 0x0153, > + TPM2_CC_LOAD = 0x0157, > + TPM2_CC_SEQUENCE_UPDATE = 0x015C, > + TPM2_CC_UNSEAL = 0x015E, > + TPM2_CC_CONTEXT_LOAD = 0x0161, > + TPM2_CC_CONTEXT_SAVE = 0x0162, > + TPM2_CC_FLUSH_CONTEXT = 0x0165, > + TPM2_CC_VERIFY_SIGNATURE = 0x0177, > + TPM2_CC_GET_CAPABILITY = 0x017A, > + TPM2_CC_GET_RANDOM = 0x017B, > + TPM2_CC_PCR_READ = 0x017E, > + TPM2_CC_PCR_EXTEND = 0x0182, > + TPM2_CC_EVENT_SEQUENCE_COMPLETE = 0x0185, > + TPM2_CC_HASH_SEQUENCE_START = 0x0186, > + TPM2_CC_CREATE_LOADED = 0x0191, > + TPM2_CC_LAST = 0x0193, /* Spec 1.36 */ > }; > > enum tpm2_permanent_handles { > diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c > index 3acf4fd4e5a5..d26b439976bc 100644 > --- a/drivers/char/tpm/tpm2-cmd.c > +++ b/drivers/char/tpm/tpm2-cmd.c > @@ -40,129 +40,100 @@ static struct tpm2_hash tpm2_hash_map[] = { > {HASH_ALGO_SM3_256, TPM2_ALG_SM3_256}, > }; > > -/* > - * Array with one entry per ordinal defining the maximum amount > - * of time the chip could take to return the result. The values > - * of the SHORT, MEDIUM, and LONG durations are taken from the > - * PC Client Profile (PTP) specification. > - * LONG_LONG is for commands that generates keys which empirically > - * takes longer time on some systems. > +/** > + * tpm2_ordinal_duration_index() - returns an index to the chip duration table > + * @ordinal: TPM command ordinal. > + * > + * The function returns an index to the chip duration table > + * (enum tpm_duration), that describes the maximum amount of > + * time the chip could take to return the result for a particular ordinal. > + * > + * The values of the MEDIUM, and LONG durations are taken > + * from the PC Client Profile (PTP) specification (750, 2000 msec) > + * > + * LONG_LONG is for commands that generates keys which empirically takes > + * a longer time on some systems. > + * > + * Return: > + * * TPM_MEDIUM > + * * TPM_LONG > + * * TPM_LONG_LONG > + * * TPM_UNDEFINED > */ > -static const u8 tpm2_ordinal_duration[TPM2_CC_LAST - TPM2_CC_FIRST + 1] = { > - TPM_UNDEFINED, /* 11F */ > - TPM_UNDEFINED, /* 120 */ > - TPM_LONG, /* 121 */ > - TPM_UNDEFINED, /* 122 */ > - TPM_UNDEFINED, /* 123 */ > - TPM_UNDEFINED, /* 124 */ > - TPM_UNDEFINED, /* 125 */ > - TPM_UNDEFINED, /* 126 */ > - TPM_UNDEFINED, /* 127 */ > - TPM_UNDEFINED, /* 128 */ > - TPM_LONG, /* 129 */ > - TPM_UNDEFINED, /* 12a */ > - TPM_UNDEFINED, /* 12b */ > - TPM_UNDEFINED, /* 12c */ > - TPM_UNDEFINED, /* 12d */ > - TPM_UNDEFINED, /* 12e */ > - TPM_UNDEFINED, /* 12f */ > - TPM_UNDEFINED, /* 130 */ > - TPM_LONG_LONG, /* 131 */ > - TPM_UNDEFINED, /* 132 */ > - TPM_UNDEFINED, /* 133 */ > - TPM_UNDEFINED, /* 134 */ > - TPM_UNDEFINED, /* 135 */ > - TPM_UNDEFINED, /* 136 */ > - TPM_UNDEFINED, /* 137 */ > - TPM_UNDEFINED, /* 138 */ > - TPM_UNDEFINED, /* 139 */ > - TPM_UNDEFINED, /* 13a */ > - TPM_UNDEFINED, /* 13b */ > - TPM_UNDEFINED, /* 13c */ > - TPM_UNDEFINED, /* 13d */ > - TPM_MEDIUM, /* 13e */ > - TPM_UNDEFINED, /* 13f */ > - TPM_UNDEFINED, /* 140 */ > - TPM_UNDEFINED, /* 141 */ > - TPM_UNDEFINED, /* 142 */ > - TPM_LONG, /* 143 */ > - TPM_MEDIUM, /* 144 */ > - TPM_UNDEFINED, /* 145 */ > - TPM_UNDEFINED, /* 146 */ > - TPM_UNDEFINED, /* 147 */ > - TPM_UNDEFINED, /* 148 */ > - TPM_UNDEFINED, /* 149 */ > - TPM_UNDEFINED, /* 14a */ > - TPM_UNDEFINED, /* 14b */ > - TPM_UNDEFINED, /* 14c */ > - TPM_UNDEFINED, /* 14d */ > - TPM_LONG, /* 14e */ > - TPM_UNDEFINED, /* 14f */ > - TPM_UNDEFINED, /* 150 */ > - TPM_UNDEFINED, /* 151 */ > - TPM_UNDEFINED, /* 152 */ > - TPM_LONG_LONG, /* 153 */ > - TPM_UNDEFINED, /* 154 */ > - TPM_UNDEFINED, /* 155 */ > - TPM_UNDEFINED, /* 156 */ > - TPM_UNDEFINED, /* 157 */ > - TPM_UNDEFINED, /* 158 */ > - TPM_UNDEFINED, /* 159 */ > - TPM_UNDEFINED, /* 15a */ > - TPM_UNDEFINED, /* 15b */ > - TPM_MEDIUM, /* 15c */ > - TPM_UNDEFINED, /* 15d */ > - TPM_UNDEFINED, /* 15e */ > - TPM_UNDEFINED, /* 15f */ > - TPM_UNDEFINED, /* 160 */ > - TPM_UNDEFINED, /* 161 */ > - TPM_UNDEFINED, /* 162 */ > - TPM_UNDEFINED, /* 163 */ > - TPM_UNDEFINED, /* 164 */ > - TPM_UNDEFINED, /* 165 */ > - TPM_UNDEFINED, /* 166 */ > - TPM_UNDEFINED, /* 167 */ > - TPM_UNDEFINED, /* 168 */ > - TPM_UNDEFINED, /* 169 */ > - TPM_UNDEFINED, /* 16a */ > - TPM_UNDEFINED, /* 16b */ > - TPM_UNDEFINED, /* 16c */ > - TPM_UNDEFINED, /* 16d */ > - TPM_UNDEFINED, /* 16e */ > - TPM_UNDEFINED, /* 16f */ > - TPM_UNDEFINED, /* 170 */ > - TPM_UNDEFINED, /* 171 */ > - TPM_UNDEFINED, /* 172 */ > - TPM_UNDEFINED, /* 173 */ > - TPM_UNDEFINED, /* 174 */ > - TPM_UNDEFINED, /* 175 */ > - TPM_UNDEFINED, /* 176 */ > - TPM_LONG, /* 177 */ > - TPM_UNDEFINED, /* 178 */ > - TPM_UNDEFINED, /* 179 */ > - TPM_MEDIUM, /* 17a */ > - TPM_LONG, /* 17b */ > - TPM_UNDEFINED, /* 17c */ > - TPM_UNDEFINED, /* 17d */ > - TPM_UNDEFINED, /* 17e */ > - TPM_UNDEFINED, /* 17f */ > - TPM_UNDEFINED, /* 180 */ > - TPM_UNDEFINED, /* 181 */ > - TPM_MEDIUM, /* 182 */ > - TPM_UNDEFINED, /* 183 */ > - TPM_UNDEFINED, /* 184 */ > - TPM_MEDIUM, /* 185 */ > - TPM_MEDIUM, /* 186 */ > - TPM_UNDEFINED, /* 187 */ > - TPM_UNDEFINED, /* 188 */ > - TPM_UNDEFINED, /* 189 */ > - TPM_UNDEFINED, /* 18a */ > - TPM_UNDEFINED, /* 18b */ > - TPM_UNDEFINED, /* 18c */ > - TPM_UNDEFINED, /* 18d */ > - TPM_UNDEFINED, /* 18e */ > - TPM_UNDEFINED /* 18f */ > -}; > +static u8 tpm2_ordinal_duration_index(u32 ordinal) > +{ > + switch (ordinal) { > + /* Startup */ > + case TPM2_CC_STARTUP: /* 144 */ > + return TPM_MEDIUM; > + > + case TPM2_CC_SELF_TEST: /* 143 */ > + return TPM_LONG; > + > + case TPM2_CC_GET_RANDOM: /* 17B */ > + return TPM_LONG; > + > + case TPM2_CC_SEQUENCE_UPDATE: /* 15C */ > + return TPM_MEDIUM; > + case TPM2_CC_SEQUENCE_COMPLETE: /* 13E */ > + return TPM_MEDIUM; > + case TPM2_CC_EVENT_SEQUENCE_COMPLETE: /* 185 */ > + return TPM_MEDIUM; > + case TPM2_CC_HASH_SEQUENCE_START: /* 186 */ > + return TPM_MEDIUM; > + > + case TPM2_CC_VERIFY_SIGNATURE: /* 177 */ > + return TPM_LONG; > + > + case TPM2_CC_PCR_EXTEND: /* 182 */ > + return TPM_MEDIUM; > + > + case TPM2_CC_HIERARCHY_CONTROL: /* 121 */ > + return TPM_LONG; > + case TPM2_CC_HIERARCHY_CHANGE_AUTH: /* 129 */ > + return TPM_LONG; > + > + case TPM2_CC_GET_CAPABILITY: /* 17A */ > + return TPM_MEDIUM; > + > + case TPM2_CC_NV_READ: /* 14E */ > + return TPM_LONG; > + > + case TPM2_CC_CREATE_PRIMARY: /* 131 */ > + return TPM_LONG_LONG; > + case TPM2_CC_CREATE: /* 153 */ > + return TPM_LONG_LONG; > + case TPM2_CC_CREATE_LOADED: /* 191 */ > + return TPM_LONG_LONG; > + > + default: > + return TPM_UNDEFINED; > + } > +} > + > +/** > + * tpm2_calc_ordinal_duration() - calculate the maximum command duration > + * @chip: TPM chip to use. > + * @ordinal: TPM command ordinal. > + * > + * The function returns the maximum amount of time the chip could take > + * to return the result for a particular ordinal in jiffies. > + * > + * Return: A maximal duration time for an ordinal in jiffies. > + */ > +unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal) > +{ > + unsigned int index; > + > + index = tpm2_ordinal_duration_index(ordinal); > + > + if (index != TPM_UNDEFINED) > + return chip->duration[index]; > + else > + return msecs_to_jiffies(TPM2_DURATION_DEFAULT); > +} > +EXPORT_SYMBOL_GPL(tpm2_calc_ordinal_duration); > + > > struct tpm2_pcr_read_out { > __be32 update_cnt; > @@ -748,32 +719,6 @@ void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type) > tpm_buf_destroy(&buf); > } > > -/* > - * tpm2_calc_ordinal_duration() - maximum duration for a command > - * > - * @chip: TPM chip to use. > - * @ordinal: command code number. > - * > - * Return: maximum duration for a command > - */ > -unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal) > -{ > - int index = TPM_UNDEFINED; > - int duration = 0; > - > - if (ordinal >= TPM2_CC_FIRST && ordinal <= TPM2_CC_LAST) > - index = tpm2_ordinal_duration[ordinal - TPM2_CC_FIRST]; > - > - if (index != TPM_UNDEFINED) > - duration = chip->duration[index]; > - > - if (duration <= 0) > - duration = msecs_to_jiffies(TPM2_DURATION_DEFAULT); > - > - return duration; > -} > -EXPORT_SYMBOL_GPL(tpm2_calc_ordinal_duration); > - > /** > * tpm2_do_selftest() - ensure that all self tests have passed > * > -- > 2.14.4 > > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> /Jarkko
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index f20dc8ece348..0f08518b525d 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -134,22 +134,31 @@ enum tpm2_algorithms { }; enum tpm2_command_codes { - TPM2_CC_FIRST = 0x011F, - TPM2_CC_CREATE_PRIMARY = 0x0131, - TPM2_CC_SELF_TEST = 0x0143, - TPM2_CC_STARTUP = 0x0144, - TPM2_CC_SHUTDOWN = 0x0145, - TPM2_CC_CREATE = 0x0153, - TPM2_CC_LOAD = 0x0157, - TPM2_CC_UNSEAL = 0x015E, - TPM2_CC_CONTEXT_LOAD = 0x0161, - TPM2_CC_CONTEXT_SAVE = 0x0162, - TPM2_CC_FLUSH_CONTEXT = 0x0165, - TPM2_CC_GET_CAPABILITY = 0x017A, - TPM2_CC_GET_RANDOM = 0x017B, - TPM2_CC_PCR_READ = 0x017E, - TPM2_CC_PCR_EXTEND = 0x0182, - TPM2_CC_LAST = 0x018F, + TPM2_CC_FIRST = 0x011F, + TPM2_CC_HIERARCHY_CONTROL = 0x0121, + TPM2_CC_HIERARCHY_CHANGE_AUTH = 0x0129, + TPM2_CC_CREATE_PRIMARY = 0x0131, + TPM2_CC_SEQUENCE_COMPLETE = 0x013E, + TPM2_CC_SELF_TEST = 0x0143, + TPM2_CC_STARTUP = 0x0144, + TPM2_CC_SHUTDOWN = 0x0145, + TPM2_CC_NV_READ = 0x014E, + TPM2_CC_CREATE = 0x0153, + TPM2_CC_LOAD = 0x0157, + TPM2_CC_SEQUENCE_UPDATE = 0x015C, + TPM2_CC_UNSEAL = 0x015E, + TPM2_CC_CONTEXT_LOAD = 0x0161, + TPM2_CC_CONTEXT_SAVE = 0x0162, + TPM2_CC_FLUSH_CONTEXT = 0x0165, + TPM2_CC_VERIFY_SIGNATURE = 0x0177, + TPM2_CC_GET_CAPABILITY = 0x017A, + TPM2_CC_GET_RANDOM = 0x017B, + TPM2_CC_PCR_READ = 0x017E, + TPM2_CC_PCR_EXTEND = 0x0182, + TPM2_CC_EVENT_SEQUENCE_COMPLETE = 0x0185, + TPM2_CC_HASH_SEQUENCE_START = 0x0186, + TPM2_CC_CREATE_LOADED = 0x0191, + TPM2_CC_LAST = 0x0193, /* Spec 1.36 */ }; enum tpm2_permanent_handles { diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index 3acf4fd4e5a5..d26b439976bc 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -40,129 +40,100 @@ static struct tpm2_hash tpm2_hash_map[] = { {HASH_ALGO_SM3_256, TPM2_ALG_SM3_256}, }; -/* - * Array with one entry per ordinal defining the maximum amount - * of time the chip could take to return the result. The values - * of the SHORT, MEDIUM, and LONG durations are taken from the - * PC Client Profile (PTP) specification. - * LONG_LONG is for commands that generates keys which empirically - * takes longer time on some systems. +/** + * tpm2_ordinal_duration_index() - returns an index to the chip duration table + * @ordinal: TPM command ordinal. + * + * The function returns an index to the chip duration table + * (enum tpm_duration), that describes the maximum amount of + * time the chip could take to return the result for a particular ordinal. + * + * The values of the MEDIUM, and LONG durations are taken + * from the PC Client Profile (PTP) specification (750, 2000 msec) + * + * LONG_LONG is for commands that generates keys which empirically takes + * a longer time on some systems. + * + * Return: + * * TPM_MEDIUM + * * TPM_LONG + * * TPM_LONG_LONG + * * TPM_UNDEFINED */ -static const u8 tpm2_ordinal_duration[TPM2_CC_LAST - TPM2_CC_FIRST + 1] = { - TPM_UNDEFINED, /* 11F */ - TPM_UNDEFINED, /* 120 */ - TPM_LONG, /* 121 */ - TPM_UNDEFINED, /* 122 */ - TPM_UNDEFINED, /* 123 */ - TPM_UNDEFINED, /* 124 */ - TPM_UNDEFINED, /* 125 */ - TPM_UNDEFINED, /* 126 */ - TPM_UNDEFINED, /* 127 */ - TPM_UNDEFINED, /* 128 */ - TPM_LONG, /* 129 */ - TPM_UNDEFINED, /* 12a */ - TPM_UNDEFINED, /* 12b */ - TPM_UNDEFINED, /* 12c */ - TPM_UNDEFINED, /* 12d */ - TPM_UNDEFINED, /* 12e */ - TPM_UNDEFINED, /* 12f */ - TPM_UNDEFINED, /* 130 */ - TPM_LONG_LONG, /* 131 */ - TPM_UNDEFINED, /* 132 */ - TPM_UNDEFINED, /* 133 */ - TPM_UNDEFINED, /* 134 */ - TPM_UNDEFINED, /* 135 */ - TPM_UNDEFINED, /* 136 */ - TPM_UNDEFINED, /* 137 */ - TPM_UNDEFINED, /* 138 */ - TPM_UNDEFINED, /* 139 */ - TPM_UNDEFINED, /* 13a */ - TPM_UNDEFINED, /* 13b */ - TPM_UNDEFINED, /* 13c */ - TPM_UNDEFINED, /* 13d */ - TPM_MEDIUM, /* 13e */ - TPM_UNDEFINED, /* 13f */ - TPM_UNDEFINED, /* 140 */ - TPM_UNDEFINED, /* 141 */ - TPM_UNDEFINED, /* 142 */ - TPM_LONG, /* 143 */ - TPM_MEDIUM, /* 144 */ - TPM_UNDEFINED, /* 145 */ - TPM_UNDEFINED, /* 146 */ - TPM_UNDEFINED, /* 147 */ - TPM_UNDEFINED, /* 148 */ - TPM_UNDEFINED, /* 149 */ - TPM_UNDEFINED, /* 14a */ - TPM_UNDEFINED, /* 14b */ - TPM_UNDEFINED, /* 14c */ - TPM_UNDEFINED, /* 14d */ - TPM_LONG, /* 14e */ - TPM_UNDEFINED, /* 14f */ - TPM_UNDEFINED, /* 150 */ - TPM_UNDEFINED, /* 151 */ - TPM_UNDEFINED, /* 152 */ - TPM_LONG_LONG, /* 153 */ - TPM_UNDEFINED, /* 154 */ - TPM_UNDEFINED, /* 155 */ - TPM_UNDEFINED, /* 156 */ - TPM_UNDEFINED, /* 157 */ - TPM_UNDEFINED, /* 158 */ - TPM_UNDEFINED, /* 159 */ - TPM_UNDEFINED, /* 15a */ - TPM_UNDEFINED, /* 15b */ - TPM_MEDIUM, /* 15c */ - TPM_UNDEFINED, /* 15d */ - TPM_UNDEFINED, /* 15e */ - TPM_UNDEFINED, /* 15f */ - TPM_UNDEFINED, /* 160 */ - TPM_UNDEFINED, /* 161 */ - TPM_UNDEFINED, /* 162 */ - TPM_UNDEFINED, /* 163 */ - TPM_UNDEFINED, /* 164 */ - TPM_UNDEFINED, /* 165 */ - TPM_UNDEFINED, /* 166 */ - TPM_UNDEFINED, /* 167 */ - TPM_UNDEFINED, /* 168 */ - TPM_UNDEFINED, /* 169 */ - TPM_UNDEFINED, /* 16a */ - TPM_UNDEFINED, /* 16b */ - TPM_UNDEFINED, /* 16c */ - TPM_UNDEFINED, /* 16d */ - TPM_UNDEFINED, /* 16e */ - TPM_UNDEFINED, /* 16f */ - TPM_UNDEFINED, /* 170 */ - TPM_UNDEFINED, /* 171 */ - TPM_UNDEFINED, /* 172 */ - TPM_UNDEFINED, /* 173 */ - TPM_UNDEFINED, /* 174 */ - TPM_UNDEFINED, /* 175 */ - TPM_UNDEFINED, /* 176 */ - TPM_LONG, /* 177 */ - TPM_UNDEFINED, /* 178 */ - TPM_UNDEFINED, /* 179 */ - TPM_MEDIUM, /* 17a */ - TPM_LONG, /* 17b */ - TPM_UNDEFINED, /* 17c */ - TPM_UNDEFINED, /* 17d */ - TPM_UNDEFINED, /* 17e */ - TPM_UNDEFINED, /* 17f */ - TPM_UNDEFINED, /* 180 */ - TPM_UNDEFINED, /* 181 */ - TPM_MEDIUM, /* 182 */ - TPM_UNDEFINED, /* 183 */ - TPM_UNDEFINED, /* 184 */ - TPM_MEDIUM, /* 185 */ - TPM_MEDIUM, /* 186 */ - TPM_UNDEFINED, /* 187 */ - TPM_UNDEFINED, /* 188 */ - TPM_UNDEFINED, /* 189 */ - TPM_UNDEFINED, /* 18a */ - TPM_UNDEFINED, /* 18b */ - TPM_UNDEFINED, /* 18c */ - TPM_UNDEFINED, /* 18d */ - TPM_UNDEFINED, /* 18e */ - TPM_UNDEFINED /* 18f */ -}; +static u8 tpm2_ordinal_duration_index(u32 ordinal) +{ + switch (ordinal) { + /* Startup */ + case TPM2_CC_STARTUP: /* 144 */ + return TPM_MEDIUM; + + case TPM2_CC_SELF_TEST: /* 143 */ + return TPM_LONG; + + case TPM2_CC_GET_RANDOM: /* 17B */ + return TPM_LONG; + + case TPM2_CC_SEQUENCE_UPDATE: /* 15C */ + return TPM_MEDIUM; + case TPM2_CC_SEQUENCE_COMPLETE: /* 13E */ + return TPM_MEDIUM; + case TPM2_CC_EVENT_SEQUENCE_COMPLETE: /* 185 */ + return TPM_MEDIUM; + case TPM2_CC_HASH_SEQUENCE_START: /* 186 */ + return TPM_MEDIUM; + + case TPM2_CC_VERIFY_SIGNATURE: /* 177 */ + return TPM_LONG; + + case TPM2_CC_PCR_EXTEND: /* 182 */ + return TPM_MEDIUM; + + case TPM2_CC_HIERARCHY_CONTROL: /* 121 */ + return TPM_LONG; + case TPM2_CC_HIERARCHY_CHANGE_AUTH: /* 129 */ + return TPM_LONG; + + case TPM2_CC_GET_CAPABILITY: /* 17A */ + return TPM_MEDIUM; + + case TPM2_CC_NV_READ: /* 14E */ + return TPM_LONG; + + case TPM2_CC_CREATE_PRIMARY: /* 131 */ + return TPM_LONG_LONG; + case TPM2_CC_CREATE: /* 153 */ + return TPM_LONG_LONG; + case TPM2_CC_CREATE_LOADED: /* 191 */ + return TPM_LONG_LONG; + + default: + return TPM_UNDEFINED; + } +} + +/** + * tpm2_calc_ordinal_duration() - calculate the maximum command duration + * @chip: TPM chip to use. + * @ordinal: TPM command ordinal. + * + * The function returns the maximum amount of time the chip could take + * to return the result for a particular ordinal in jiffies. + * + * Return: A maximal duration time for an ordinal in jiffies. + */ +unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal) +{ + unsigned int index; + + index = tpm2_ordinal_duration_index(ordinal); + + if (index != TPM_UNDEFINED) + return chip->duration[index]; + else + return msecs_to_jiffies(TPM2_DURATION_DEFAULT); +} +EXPORT_SYMBOL_GPL(tpm2_calc_ordinal_duration); + struct tpm2_pcr_read_out { __be32 update_cnt; @@ -748,32 +719,6 @@ void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type) tpm_buf_destroy(&buf); } -/* - * tpm2_calc_ordinal_duration() - maximum duration for a command - * - * @chip: TPM chip to use. - * @ordinal: command code number. - * - * Return: maximum duration for a command - */ -unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal) -{ - int index = TPM_UNDEFINED; - int duration = 0; - - if (ordinal >= TPM2_CC_FIRST && ordinal <= TPM2_CC_LAST) - index = tpm2_ordinal_duration[ordinal - TPM2_CC_FIRST]; - - if (index != TPM_UNDEFINED) - duration = chip->duration[index]; - - if (duration <= 0) - duration = msecs_to_jiffies(TPM2_DURATION_DEFAULT); - - return duration; -} -EXPORT_SYMBOL_GPL(tpm2_calc_ordinal_duration); - /** * tpm2_do_selftest() - ensure that all self tests have passed *