Commit f4d916b7 authored by Tomas Winkler's avatar Tomas Winkler Committed by Jarkko Sakkinen

tpm: move tpm_getcap to tpm1-cmd.c

1. Move tpm_getcap to tpm1-cmd. Rename the function to tpm1_getcap.
2. Remove unused tpm_getcap_header with unused constant
as this functionality is already implemented using tpm_buf construct.

Fixes warning:
drivers/char/tpm/tpm-interface.c:452:38: warning: ‘tpm_getcap_header’ defined but not used [-Wunused-const-variable=]
 static const struct tpm_input_header tpm_getcap_header = {
                                      ^~~~~~~~~~~~~~~~~
3. Drop unused TPM_DIGEST_SIZE. It's already defined in
include/linux/tpm.h
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Reviewed-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
parent 1ad6640c
...@@ -454,52 +454,6 @@ int tpm_startup(struct tpm_chip *chip) ...@@ -454,52 +454,6 @@ int tpm_startup(struct tpm_chip *chip)
return rc; return rc;
} }
#define TPM_DIGEST_SIZE 20
#define TPM_RET_CODE_IDX 6
#define TPM_INTERNAL_RESULT_SIZE 200
#define TPM_ORD_GET_CAP 101
#define TPM_ORD_GET_RANDOM 70
static const struct tpm_input_header tpm_getcap_header = {
.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
.length = cpu_to_be32(22),
.ordinal = cpu_to_be32(TPM_ORD_GET_CAP)
};
ssize_t tpm_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
const char *desc, size_t min_cap_length)
{
struct tpm_buf buf;
int rc;
rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_GET_CAP);
if (rc)
return rc;
if (subcap_id == TPM_CAP_VERSION_1_1 ||
subcap_id == TPM_CAP_VERSION_1_2) {
tpm_buf_append_u32(&buf, subcap_id);
tpm_buf_append_u32(&buf, 0);
} else {
if (subcap_id == TPM_CAP_FLAG_PERM ||
subcap_id == TPM_CAP_FLAG_VOL)
tpm_buf_append_u32(&buf, TPM_CAP_FLAG);
else
tpm_buf_append_u32(&buf, TPM_CAP_PROP);
tpm_buf_append_u32(&buf, 4);
tpm_buf_append_u32(&buf, subcap_id);
}
rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE,
min_cap_length, 0, desc);
if (!rc)
*cap = *(cap_t *)&buf.data[TPM_HEADER_SIZE + 4];
tpm_buf_destroy(&buf);
return rc;
}
EXPORT_SYMBOL_GPL(tpm_getcap);
int tpm_get_timeouts(struct tpm_chip *chip) int tpm_get_timeouts(struct tpm_chip *chip)
{ {
if (chip->flags & TPM_CHIP_FLAG_HAVE_TIMEOUTS) if (chip->flags & TPM_CHIP_FLAG_HAVE_TIMEOUTS)
...@@ -857,6 +811,7 @@ int tpm_pm_resume(struct device *dev) ...@@ -857,6 +811,7 @@ int tpm_pm_resume(struct device *dev)
} }
EXPORT_SYMBOL_GPL(tpm_pm_resume); EXPORT_SYMBOL_GPL(tpm_pm_resume);
#define TPM_ORD_GET_RANDOM 70
#define TPM_GETRANDOM_RESULT_SIZE 18 #define TPM_GETRANDOM_RESULT_SIZE 18
static const struct tpm_input_header tpm_getrandom_header = { static const struct tpm_input_header tpm_getrandom_header = {
.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND), .tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
......
...@@ -106,9 +106,9 @@ static ssize_t pcrs_show(struct device *dev, struct device_attribute *attr, ...@@ -106,9 +106,9 @@ static ssize_t pcrs_show(struct device *dev, struct device_attribute *attr,
char *str = buf; char *str = buf;
struct tpm_chip *chip = to_tpm_chip(dev); struct tpm_chip *chip = to_tpm_chip(dev);
rc = tpm_getcap(chip, TPM_CAP_PROP_PCR, &cap, rc = tpm1_getcap(chip, TPM_CAP_PROP_PCR, &cap,
"attempting to determine the number of PCRS", "attempting to determine the number of PCRS",
sizeof(cap.num_pcrs)); sizeof(cap.num_pcrs));
if (rc) if (rc)
return 0; return 0;
...@@ -132,9 +132,9 @@ static ssize_t enabled_show(struct device *dev, struct device_attribute *attr, ...@@ -132,9 +132,9 @@ static ssize_t enabled_show(struct device *dev, struct device_attribute *attr,
cap_t cap; cap_t cap;
ssize_t rc; ssize_t rc;
rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap, rc = tpm1_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap,
"attempting to determine the permanent enabled state", "attempting to determine the permanent enabled state",
sizeof(cap.perm_flags)); sizeof(cap.perm_flags));
if (rc) if (rc)
return 0; return 0;
...@@ -149,9 +149,9 @@ static ssize_t active_show(struct device *dev, struct device_attribute *attr, ...@@ -149,9 +149,9 @@ static ssize_t active_show(struct device *dev, struct device_attribute *attr,
cap_t cap; cap_t cap;
ssize_t rc; ssize_t rc;
rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap, rc = tpm1_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap,
"attempting to determine the permanent active state", "attempting to determine the permanent active state",
sizeof(cap.perm_flags)); sizeof(cap.perm_flags));
if (rc) if (rc)
return 0; return 0;
...@@ -166,9 +166,9 @@ static ssize_t owned_show(struct device *dev, struct device_attribute *attr, ...@@ -166,9 +166,9 @@ static ssize_t owned_show(struct device *dev, struct device_attribute *attr,
cap_t cap; cap_t cap;
ssize_t rc; ssize_t rc;
rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_PROP_OWNER, &cap, rc = tpm1_getcap(to_tpm_chip(dev), TPM_CAP_PROP_OWNER, &cap,
"attempting to determine the owner state", "attempting to determine the owner state",
sizeof(cap.owned)); sizeof(cap.owned));
if (rc) if (rc)
return 0; return 0;
...@@ -183,9 +183,9 @@ static ssize_t temp_deactivated_show(struct device *dev, ...@@ -183,9 +183,9 @@ static ssize_t temp_deactivated_show(struct device *dev,
cap_t cap; cap_t cap;
ssize_t rc; ssize_t rc;
rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_VOL, &cap, rc = tpm1_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_VOL, &cap,
"attempting to determine the temporary state", "attempting to determine the temporary state",
sizeof(cap.stclear_flags)); sizeof(cap.stclear_flags));
if (rc) if (rc)
return 0; return 0;
...@@ -202,18 +202,18 @@ static ssize_t caps_show(struct device *dev, struct device_attribute *attr, ...@@ -202,18 +202,18 @@ static ssize_t caps_show(struct device *dev, struct device_attribute *attr,
ssize_t rc; ssize_t rc;
char *str = buf; char *str = buf;
rc = tpm_getcap(chip, TPM_CAP_PROP_MANUFACTURER, &cap, rc = tpm1_getcap(chip, TPM_CAP_PROP_MANUFACTURER, &cap,
"attempting to determine the manufacturer", "attempting to determine the manufacturer",
sizeof(cap.manufacturer_id)); sizeof(cap.manufacturer_id));
if (rc) if (rc)
return 0; return 0;
str += sprintf(str, "Manufacturer: 0x%x\n", str += sprintf(str, "Manufacturer: 0x%x\n",
be32_to_cpu(cap.manufacturer_id)); be32_to_cpu(cap.manufacturer_id));
/* Try to get a TPM version 1.2 TPM_CAP_VERSION_INFO */ /* Try to get a TPM version 1.2 TPM_CAP_VERSION_INFO */
rc = tpm_getcap(chip, TPM_CAP_VERSION_1_2, &cap, rc = tpm1_getcap(chip, TPM_CAP_VERSION_1_2, &cap,
"attempting to determine the 1.2 version", "attempting to determine the 1.2 version",
sizeof(cap.tpm_version_1_2)); sizeof(cap.tpm_version_1_2));
if (!rc) { if (!rc) {
str += sprintf(str, str += sprintf(str,
"TCG version: %d.%d\nFirmware version: %d.%d\n", "TCG version: %d.%d\nFirmware version: %d.%d\n",
...@@ -223,9 +223,9 @@ static ssize_t caps_show(struct device *dev, struct device_attribute *attr, ...@@ -223,9 +223,9 @@ static ssize_t caps_show(struct device *dev, struct device_attribute *attr,
cap.tpm_version_1_2.revMinor); cap.tpm_version_1_2.revMinor);
} else { } else {
/* Otherwise just use TPM_STRUCT_VER */ /* Otherwise just use TPM_STRUCT_VER */
rc = tpm_getcap(chip, TPM_CAP_VERSION_1_1, &cap, rc = tpm1_getcap(chip, TPM_CAP_VERSION_1_1, &cap,
"attempting to determine the 1.1 version", "attempting to determine the 1.1 version",
sizeof(cap.tpm_version)); sizeof(cap.tpm_version));
if (rc) if (rc)
return 0; return 0;
str += sprintf(str, str += sprintf(str,
......
...@@ -541,8 +541,6 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space, ...@@ -541,8 +541,6 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space,
size_t min_rsp_body_length, unsigned int flags, size_t min_rsp_body_length, unsigned int flags,
const char *desc); const char *desc);
int tpm_startup(struct tpm_chip *chip); int tpm_startup(struct tpm_chip *chip);
ssize_t tpm_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
const char *desc, size_t min_cap_length);
int tpm_get_timeouts(struct tpm_chip *); int tpm_get_timeouts(struct tpm_chip *);
int tpm1_auto_startup(struct tpm_chip *chip); int tpm1_auto_startup(struct tpm_chip *chip);
int tpm_do_selftest(struct tpm_chip *chip); int tpm_do_selftest(struct tpm_chip *chip);
...@@ -551,6 +549,8 @@ int tpm1_get_timeouts(struct tpm_chip *chip); ...@@ -551,6 +549,8 @@ int tpm1_get_timeouts(struct tpm_chip *chip);
unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash, int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
const char *log_msg); const char *log_msg);
ssize_t tpm1_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
const char *desc, size_t min_cap_length);
unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm_pm_suspend(struct device *dev); int tpm_pm_suspend(struct device *dev);
int tpm_pm_resume(struct device *dev); int tpm_pm_resume(struct device *dev);
......
...@@ -314,15 +314,15 @@ int tpm1_get_timeouts(struct tpm_chip *chip) ...@@ -314,15 +314,15 @@ int tpm1_get_timeouts(struct tpm_chip *chip)
unsigned long timeout_old[4], timeout_chip[4], timeout_eff[4]; unsigned long timeout_old[4], timeout_chip[4], timeout_eff[4];
ssize_t rc; ssize_t rc;
rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, NULL, rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, NULL,
sizeof(cap.timeout)); sizeof(cap.timeout));
if (rc == TPM_ERR_INVALID_POSTINIT) { if (rc == TPM_ERR_INVALID_POSTINIT) {
if (tpm_startup(chip)) if (tpm_startup(chip))
return rc; return rc;
rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap,
"attempting to determine the timeouts", "attempting to determine the timeouts",
sizeof(cap.timeout)); sizeof(cap.timeout));
} }
if (rc) { if (rc) {
...@@ -383,9 +383,9 @@ int tpm1_get_timeouts(struct tpm_chip *chip) ...@@ -383,9 +383,9 @@ int tpm1_get_timeouts(struct tpm_chip *chip)
chip->timeout_c = usecs_to_jiffies(timeout_eff[2]); chip->timeout_c = usecs_to_jiffies(timeout_eff[2]);
chip->timeout_d = usecs_to_jiffies(timeout_eff[3]); chip->timeout_d = usecs_to_jiffies(timeout_eff[3]);
rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_DURATION, &cap, rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_DURATION, &cap,
"attempting to determine the durations", "attempting to determine the durations",
sizeof(cap.duration)); sizeof(cap.duration));
if (rc) if (rc)
return rc; return rc;
...@@ -434,3 +434,38 @@ int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash, ...@@ -434,3 +434,38 @@ int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
tpm_buf_destroy(&buf); tpm_buf_destroy(&buf);
return rc; return rc;
} }
#define TPM_ORD_GET_CAP 101
ssize_t tpm1_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
const char *desc, size_t min_cap_length)
{
struct tpm_buf buf;
int rc;
rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_GET_CAP);
if (rc)
return rc;
if (subcap_id == TPM_CAP_VERSION_1_1 ||
subcap_id == TPM_CAP_VERSION_1_2) {
tpm_buf_append_u32(&buf, subcap_id);
tpm_buf_append_u32(&buf, 0);
} else {
if (subcap_id == TPM_CAP_FLAG_PERM ||
subcap_id == TPM_CAP_FLAG_VOL)
tpm_buf_append_u32(&buf, TPM_CAP_FLAG);
else
tpm_buf_append_u32(&buf, TPM_CAP_PROP);
tpm_buf_append_u32(&buf, 4);
tpm_buf_append_u32(&buf, subcap_id);
}
rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE,
min_cap_length, 0, desc);
if (!rc)
*cap = *(cap_t *)&buf.data[TPM_HEADER_SIZE + 4];
tpm_buf_destroy(&buf);
return rc;
}
EXPORT_SYMBOL_GPL(tpm1_getcap);
...@@ -664,7 +664,7 @@ static int tpm_tis_gen_interrupt(struct tpm_chip *chip) ...@@ -664,7 +664,7 @@ static int tpm_tis_gen_interrupt(struct tpm_chip *chip)
if (chip->flags & TPM_CHIP_FLAG_TPM2) if (chip->flags & TPM_CHIP_FLAG_TPM2)
return tpm2_get_tpm_pt(chip, 0x100, &cap2, desc); return tpm2_get_tpm_pt(chip, 0x100, &cap2, desc);
else else
return tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc, return tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc,
0); 0);
} }
......
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