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Message-Id: <20180312205007.29461-1-tomas.winkler@intel.com>
Date: Mon, 12 Mar 2018 22:50:07 +0200
From: Tomas Winkler <tomas.winkler@...el.com>
To: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
Jason Gunthorpe <jgg@...pe.ca>
Cc: Alexander Usyskin <alexander.usyskin@...el.com>,
linux-integrity@...r.kernel.org,
linux-security-module@...r.kernel.org,
linux-kernel@...r.kernel.org,
Tomas Winkler <tomas.winkler@...el.com>
Subject: [PATCH] tpm: add tpm_calc_ordinal_duration wrapper
Add convenient wrapper for ordinal duration computation
to remove boiler plate if else statement over TPM2.
if (chip->flags & TPM_CHIP_FLAG_TPM2)
tpm2_calc_ordinal_duration(chip, ordinal);
else
tpm1_calc_ordinal_duration(chip, ordinal);
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
---
drivers/char/tpm/st33zp24/st33zp24.c | 2 +-
drivers/char/tpm/tpm-interface.c | 14 ++++++++++----
drivers/char/tpm/tpm.h | 1 +
drivers/char/tpm/tpm1-cmd.c | 1 -
drivers/char/tpm/tpm2-cmd.c | 1 -
drivers/char/tpm/tpm_i2c_nuvoton.c | 2 +-
drivers/char/tpm/tpm_tis_core.c | 6 +-----
7 files changed, 14 insertions(+), 13 deletions(-)
diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c
index 575b7c2eab25..dad7b9d4e90d 100644
--- a/drivers/char/tpm/st33zp24/st33zp24.c
+++ b/drivers/char/tpm/st33zp24/st33zp24.c
@@ -432,7 +432,7 @@ static int st33zp24_send(struct tpm_chip *chip, unsigned char *buf,
ordinal = be32_to_cpu(*((__be32 *) (buf + 6)));
ret = wait_for_stat(chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID,
- tpm1_calc_ordinal_duration(chip, ordinal),
+ tpm_calc_ordinal_duration(chip, ordinal),
&tpm_dev->read_queue, false);
if (ret < 0)
goto out_err;
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 93f7c12d4c4d..a5536d6888fa 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -91,6 +91,15 @@ static void tpm_relinquish_locality(struct tpm_chip *chip)
chip->locality = -1;
}
+unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal)
+{
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ return tpm2_calc_ordinal_duration(chip, ordinal);
+ else
+ return tpm1_calc_ordinal_duration(chip, ordinal);
+}
+EXPORT_SYMBOL_GPL(tpm_calc_ordinal_duration);
+
/**
* tpm_transmit - Internal kernel interface to transmit TPM commands.
*
@@ -179,10 +188,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,
if (chip->flags & TPM_CHIP_FLAG_IRQ)
goto out_recv;
- if (chip->flags & TPM_CHIP_FLAG_TPM2)
- stop = jiffies + tpm2_calc_ordinal_duration(chip, ordinal);
- else
- stop = jiffies + tpm1_calc_ordinal_duration(chip, ordinal);
+ stop = jiffies + tpm_calc_ordinal_duration(chip, ordinal);
do {
u8 status = chip->ops->status(chip);
if ((status & chip->ops->req_complete_mask) ==
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 730ee50f93fa..be58c1936729 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -549,6 +549,7 @@ static inline void tpm_msleep(unsigned int delay_msec)
delay_msec * 1000);
};
+unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
struct tpm_chip *tpm_chip_find_get(struct tpm_chip *chip);
__must_check int tpm_try_get_ops(struct tpm_chip *chip);
void tpm_put_ops(struct tpm_chip *chip);
diff --git a/drivers/char/tpm/tpm1-cmd.c b/drivers/char/tpm/tpm1-cmd.c
index 85dd0fcbd4cc..f232238dd418 100644
--- a/drivers/char/tpm/tpm1-cmd.c
+++ b/drivers/char/tpm/tpm1-cmd.c
@@ -305,7 +305,6 @@ unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal)
else
return duration;
}
-EXPORT_SYMBOL_GPL(tpm1_calc_ordinal_duration);
#define TPM_ORD_STARTUP 153
#define TPM_ST_CLEAR 1
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index 6db13cf801b4..fc39545b121a 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -810,7 +810,6 @@ unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal)
else
return msecs_to_jiffies(TPM2_DURATION_DEFAULT);
}
-EXPORT_SYMBOL_GPL(tpm2_calc_ordinal_duration);
#define TPM2_SELF_TEST_IN_SIZE \
(sizeof(struct tpm_input_header) + \
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index 5d20e98b844f..4146f822fba9 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
@@ -456,7 +456,7 @@ static int i2c_nuvoton_send(struct tpm_chip *chip, u8 *buf, size_t len)
return rc;
}
ordinal = be32_to_cpu(*((__be32 *) (buf + 6)));
- duration = tpm1_calc_ordinal_duration(chip, ordinal);
+ duration = tpm_calc_ordinal_duration(chip, ordinal);
rc = i2c_nuvoton_wait_for_data_avail(chip, duration, &priv->read_queue);
if (rc) {
dev_err(dev, "%s() timeout command duration %ld\n",
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index 87f63c500956..a64548807af2 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -433,11 +433,7 @@ static int tpm_tis_send_main(struct tpm_chip *chip, const u8 *buf, size_t len)
if (chip->flags & TPM_CHIP_FLAG_IRQ) {
ordinal = be32_to_cpu(*((__be32 *) (buf + 6)));
- if (chip->flags & TPM_CHIP_FLAG_TPM2)
- dur = tpm2_calc_ordinal_duration(chip, ordinal);
- else
- dur = tpm1_calc_ordinal_duration(chip, ordinal);
-
+ dur = tpm_calc_ordinal_duration(chip, ordinal);
if (wait_for_tpm_stat
(chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID, dur,
&priv->read_queue, false) < 0) {
--
2.14.3
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