From: Tomas Winkler <tomas.winkler@intel.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
Jason Gunthorpe <jgg@ziepe.ca>
Cc: Alexander Usyskin <alexander.usyskin@intel.com>,
Tadeusz Struk <tadeusz.struk@intel.com>,
linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org,
Tomas Winkler <tomas.winkler@intel.com>
Subject: [PATCH v4 07/21] tpm: move tpm_getcap to tpm1-cmd.c
Date: Fri, 21 Sep 2018 16:58:06 +0300 [thread overview]
Message-ID: <20180921135820.20549-8-tomas.winkler@intel.com> (raw)
In-Reply-To: <20180921135820.20549-1-tomas.winkler@intel.com>
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: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---
V2-V3: Rebase
V4: Resend
drivers/char/tpm/tpm-interface.c | 47 +-----------------------------------
drivers/char/tpm/tpm-sysfs.c | 48 ++++++++++++++++++-------------------
drivers/char/tpm/tpm.h | 4 ++--
drivers/char/tpm/tpm1-cmd.c | 51 +++++++++++++++++++++++++++++++++-------
drivers/char/tpm/tpm_tis_core.c | 2 +-
5 files changed, 71 insertions(+), 81 deletions(-)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 163c4da23320..153fee46bec0 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -454,52 +454,6 @@ int tpm_startup(struct tpm_chip *chip)
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)
{
if (chip->flags & TPM_CHIP_FLAG_HAVE_TIMEOUTS)
@@ -857,6 +811,7 @@ int tpm_pm_resume(struct device *dev)
}
EXPORT_SYMBOL_GPL(tpm_pm_resume);
+#define TPM_ORD_GET_RANDOM 70
#define TPM_GETRANDOM_RESULT_SIZE 18
static const struct tpm_input_header tpm_getrandom_header = {
.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c
index 83a77a445538..008515314ae3 100644
--- a/drivers/char/tpm/tpm-sysfs.c
+++ b/drivers/char/tpm/tpm-sysfs.c
@@ -106,9 +106,9 @@ static ssize_t pcrs_show(struct device *dev, struct device_attribute *attr,
char *str = buf;
struct tpm_chip *chip = to_tpm_chip(dev);
- rc = tpm_getcap(chip, TPM_CAP_PROP_PCR, &cap,
- "attempting to determine the number of PCRS",
- sizeof(cap.num_pcrs));
+ rc = tpm1_getcap(chip, TPM_CAP_PROP_PCR, &cap,
+ "attempting to determine the number of PCRS",
+ sizeof(cap.num_pcrs));
if (rc)
return 0;
@@ -132,9 +132,9 @@ static ssize_t enabled_show(struct device *dev, struct device_attribute *attr,
cap_t cap;
ssize_t rc;
- rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap,
- "attempting to determine the permanent enabled state",
- sizeof(cap.perm_flags));
+ rc = tpm1_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap,
+ "attempting to determine the permanent enabled state",
+ sizeof(cap.perm_flags));
if (rc)
return 0;
@@ -149,9 +149,9 @@ static ssize_t active_show(struct device *dev, struct device_attribute *attr,
cap_t cap;
ssize_t rc;
- rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap,
- "attempting to determine the permanent active state",
- sizeof(cap.perm_flags));
+ rc = tpm1_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap,
+ "attempting to determine the permanent active state",
+ sizeof(cap.perm_flags));
if (rc)
return 0;
@@ -166,9 +166,9 @@ static ssize_t owned_show(struct device *dev, struct device_attribute *attr,
cap_t cap;
ssize_t rc;
- rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_PROP_OWNER, &cap,
- "attempting to determine the owner state",
- sizeof(cap.owned));
+ rc = tpm1_getcap(to_tpm_chip(dev), TPM_CAP_PROP_OWNER, &cap,
+ "attempting to determine the owner state",
+ sizeof(cap.owned));
if (rc)
return 0;
@@ -183,9 +183,9 @@ static ssize_t temp_deactivated_show(struct device *dev,
cap_t cap;
ssize_t rc;
- rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_VOL, &cap,
- "attempting to determine the temporary state",
- sizeof(cap.stclear_flags));
+ rc = tpm1_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_VOL, &cap,
+ "attempting to determine the temporary state",
+ sizeof(cap.stclear_flags));
if (rc)
return 0;
@@ -202,18 +202,18 @@ static ssize_t caps_show(struct device *dev, struct device_attribute *attr,
ssize_t rc;
char *str = buf;
- rc = tpm_getcap(chip, TPM_CAP_PROP_MANUFACTURER, &cap,
- "attempting to determine the manufacturer",
- sizeof(cap.manufacturer_id));
+ rc = tpm1_getcap(chip, TPM_CAP_PROP_MANUFACTURER, &cap,
+ "attempting to determine the manufacturer",
+ sizeof(cap.manufacturer_id));
if (rc)
return 0;
str += sprintf(str, "Manufacturer: 0x%x\n",
be32_to_cpu(cap.manufacturer_id));
/* Try to get a TPM version 1.2 TPM_CAP_VERSION_INFO */
- rc = tpm_getcap(chip, TPM_CAP_VERSION_1_2, &cap,
- "attempting to determine the 1.2 version",
- sizeof(cap.tpm_version_1_2));
+ rc = tpm1_getcap(chip, TPM_CAP_VERSION_1_2, &cap,
+ "attempting to determine the 1.2 version",
+ sizeof(cap.tpm_version_1_2));
if (!rc) {
str += sprintf(str,
"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,
cap.tpm_version_1_2.revMinor);
} else {
/* Otherwise just use TPM_STRUCT_VER */
- rc = tpm_getcap(chip, TPM_CAP_VERSION_1_1, &cap,
- "attempting to determine the 1.1 version",
- sizeof(cap.tpm_version));
+ rc = tpm1_getcap(chip, TPM_CAP_VERSION_1_1, &cap,
+ "attempting to determine the 1.1 version",
+ sizeof(cap.tpm_version));
if (rc)
return 0;
str += sprintf(str,
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 3fb268f43955..1c1980c79c30 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -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,
const char *desc);
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_do_selftest(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);
int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
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);
int tpm_pm_suspend(struct device *dev);
int tpm_pm_resume(struct device *dev);
diff --git a/drivers/char/tpm/tpm1-cmd.c b/drivers/char/tpm/tpm1-cmd.c
index 2cf13d92653c..7191bc155d2b 100644
--- a/drivers/char/tpm/tpm1-cmd.c
+++ b/drivers/char/tpm/tpm1-cmd.c
@@ -314,15 +314,15 @@ int tpm1_get_timeouts(struct tpm_chip *chip)
unsigned long timeout_old[4], timeout_chip[4], timeout_eff[4];
ssize_t rc;
- rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, NULL,
- sizeof(cap.timeout));
+ rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, NULL,
+ sizeof(cap.timeout));
if (rc == TPM_ERR_INVALID_POSTINIT) {
if (tpm_startup(chip))
return rc;
- rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap,
- "attempting to determine the timeouts",
- sizeof(cap.timeout));
+ rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap,
+ "attempting to determine the timeouts",
+ sizeof(cap.timeout));
}
if (rc) {
@@ -384,9 +384,9 @@ int tpm1_get_timeouts(struct tpm_chip *chip)
chip->timeout_c = usecs_to_jiffies(timeout_eff[2]);
chip->timeout_d = usecs_to_jiffies(timeout_eff[3]);
- rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_DURATION, &cap,
- "attempting to determine the durations",
- sizeof(cap.duration));
+ rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_DURATION, &cap,
+ "attempting to determine the durations",
+ sizeof(cap.duration));
if (rc)
return rc;
@@ -435,3 +435,38 @@ int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
tpm_buf_destroy(&buf);
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);
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index f9e73d0f9386..ced01ec146b5 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -664,7 +664,7 @@ static int tpm_tis_gen_interrupt(struct tpm_chip *chip)
if (chip->flags & TPM_CHIP_FLAG_TPM2)
return tpm2_get_tpm_pt(chip, 0x100, &cap2, desc);
else
- return tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc,
+ return tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc,
0);
}
--
2.14.4
next prev parent reply other threads:[~2018-09-21 14:03 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-21 13:57 [PATCH v4 00/21] tpm: separate tpm 1.x and tpm 2.x commands Tomas Winkler
2018-09-21 13:58 ` [PATCH v4 01/21] tpm2: add new tpm2 commands according to TCG 1.36 Tomas Winkler
2018-09-25 14:13 ` Jarkko Sakkinen
2018-09-26 6:44 ` Nayna Jain
2018-09-21 13:58 ` [PATCH v4 02/21] tpm: sort objects in the Makefile Tomas Winkler
2018-09-25 14:14 ` Jarkko Sakkinen
2018-09-21 13:58 ` [PATCH v4 03/21] tpm: factor out tpm 1.x duration calculation to tpm1-cmd.c Tomas Winkler
2018-09-25 14:17 ` Jarkko Sakkinen
2018-09-26 7:01 ` Nayna Jain
2018-09-21 13:58 ` [PATCH v4 04/21] tpm: add tpm_calc_ordinal_duration() wrapper Tomas Winkler
2018-09-21 13:58 ` [PATCH v4 05/21] tpm: factor out tpm_get_timeouts() Tomas Winkler
2018-09-25 14:19 ` Jarkko Sakkinen
2018-09-21 13:58 ` [PATCH v4 06/21] tpm: move tpm1_pcr_extend to tpm1-cmd.c Tomas Winkler
2018-09-21 13:58 ` Tomas Winkler [this message]
2018-09-21 13:58 ` [PATCH v4 08/21] tpm: factor out tpm1_get_random into tpm1-cmd.c Tomas Winkler
2018-09-21 13:58 ` [PATCH v4 09/21] tpm: move tpm 1.x selftest code from tpm-interface.c tpm1-cmd.c Tomas Winkler
2018-09-25 14:26 ` Jarkko Sakkinen
2018-09-21 13:58 ` [PATCH v4 10/21] tpm: factor out tpm 1.x pm suspend flow into tpm1-cmd.c Tomas Winkler
2018-09-25 14:31 ` Jarkko Sakkinen
2018-09-21 13:58 ` [PATCH v4 11/21] tpm: factor out tpm_startup function Tomas Winkler
2018-09-24 14:51 ` Nayna Jain
2018-09-24 22:35 ` Jarkko Sakkinen
2018-09-21 13:58 ` [PATCH v4 12/21] tpm: move pcr extend code to tpm2-cmd.c Tomas Winkler
2018-09-21 13:58 ` [PATCH v4 13/21] tpm: add tpm_auto_startup() into tpm-interface.c Tomas Winkler
2018-09-21 13:58 ` [PATCH v4 14/21] tpm: tpm-interface.c drop unused macros Tomas Winkler
2018-09-25 14:39 ` Jarkko Sakkinen
2018-09-21 13:58 ` [PATCH v4 15/21] tpm: tpm-space.c remove unneeded semicolon Tomas Winkler
2018-09-21 13:58 ` [PATCH v4 16/21] tpm: tpm1: rewrite tpm1_get_random() using tpm_buf structure Tomas Winkler
2018-09-21 13:58 ` [PATCH v4 17/21] tpm1: implement tpm1_pcr_read_dev() " Tomas Winkler
2018-09-21 13:58 ` [PATCH v4 18/21] tmp1: rename tpm1_pcr_read_dev to tpm1_pcr_read() Tomas Winkler
2018-09-25 14:39 ` Jarkko Sakkinen
2018-09-21 13:58 ` [PATCH v4 19/21] tpm1: reimplement SAVESTATE using tpm_buf Tomas Winkler
2018-09-21 13:58 ` [PATCH v4 20/21] tpm1: reimplement tpm1_continue_selftest() " Tomas Winkler
2018-09-25 10:23 ` Nayna Jain
2018-09-25 14:25 ` Jarkko Sakkinen
2018-09-25 14:28 ` Jarkko Sakkinen
2018-09-21 13:58 ` [PATCH v4 21/21] tpm: use u32 instead of int for PCR index Tomas Winkler
2018-09-25 14:41 ` Jarkko Sakkinen
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