aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/char/tpm/tpm-interface.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/char/tpm/tpm-interface.c')
-rw-r--r--drivers/char/tpm/tpm-interface.c132
1 files changed, 81 insertions, 51 deletions
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index e2fa89c88304..1abe2d7a2610 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -319,7 +319,7 @@ unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip,
duration_idx = tpm_ordinal_duration[ordinal];
if (duration_idx != TPM_UNDEFINED)
- duration = chip->vendor.duration[duration_idx];
+ duration = chip->duration[duration_idx];
if (duration <= 0)
return 2 * 60 * HZ;
else
@@ -345,7 +345,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
if (count == 0)
return -ENODATA;
if (count > bufsiz) {
- dev_err(chip->pdev,
+ dev_err(&chip->dev,
"invalid count value %x %zx\n", count, bufsiz);
return -E2BIG;
}
@@ -354,12 +354,12 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
rc = chip->ops->send(chip, (u8 *) buf, count);
if (rc < 0) {
- dev_err(chip->pdev,
+ dev_err(&chip->dev,
"tpm_transmit: tpm_send: error %zd\n", rc);
goto out;
}
- if (chip->vendor.irq)
+ if (chip->flags & TPM_CHIP_FLAG_IRQ)
goto out_recv;
if (chip->flags & TPM_CHIP_FLAG_TPM2)
@@ -373,7 +373,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
goto out_recv;
if (chip->ops->req_canceled(chip, status)) {
- dev_err(chip->pdev, "Operation Canceled\n");
+ dev_err(&chip->dev, "Operation Canceled\n");
rc = -ECANCELED;
goto out;
}
@@ -383,14 +383,14 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
} while (time_before(jiffies, stop));
chip->ops->cancel(chip);
- dev_err(chip->pdev, "Operation Timed out\n");
+ dev_err(&chip->dev, "Operation Timed out\n");
rc = -ETIME;
goto out;
out_recv:
rc = chip->ops->recv(chip, (u8 *) buf, bufsiz);
if (rc < 0)
- dev_err(chip->pdev,
+ dev_err(&chip->dev,
"tpm_transmit: tpm_recv: error %zd\n", rc);
out:
mutex_unlock(&chip->tpm_mutex);
@@ -416,7 +416,7 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd,
err = be32_to_cpu(header->return_code);
if (err != 0 && desc)
- dev_err(chip->pdev, "A TPM error (%d) occurred %s\n", err,
+ dev_err(&chip->dev, "A TPM error (%d) occurred %s\n", err,
desc);
return err;
@@ -432,12 +432,11 @@ static const struct tpm_input_header tpm_getcap_header = {
.ordinal = TPM_ORD_GET_CAP
};
-ssize_t tpm_getcap(struct device *dev, __be32 subcap_id, cap_t *cap,
+ssize_t tpm_getcap(struct tpm_chip *chip, __be32 subcap_id, cap_t *cap,
const char *desc)
{
struct tpm_cmd_t tpm_cmd;
int rc;
- struct tpm_chip *chip = dev_get_drvdata(dev);
tpm_cmd.header.in = tpm_getcap_header;
if (subcap_id == CAP_VERSION_1_1 || subcap_id == CAP_VERSION_1_2) {
@@ -505,15 +504,15 @@ int tpm_get_timeouts(struct tpm_chip *chip)
if (chip->flags & TPM_CHIP_FLAG_TPM2) {
/* Fixed timeouts for TPM2 */
- chip->vendor.timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);
- chip->vendor.timeout_b = msecs_to_jiffies(TPM2_TIMEOUT_B);
- chip->vendor.timeout_c = msecs_to_jiffies(TPM2_TIMEOUT_C);
- chip->vendor.timeout_d = msecs_to_jiffies(TPM2_TIMEOUT_D);
- chip->vendor.duration[TPM_SHORT] =
+ chip->timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);
+ chip->timeout_b = msecs_to_jiffies(TPM2_TIMEOUT_B);
+ chip->timeout_c = msecs_to_jiffies(TPM2_TIMEOUT_C);
+ chip->timeout_d = msecs_to_jiffies(TPM2_TIMEOUT_D);
+ chip->duration[TPM_SHORT] =
msecs_to_jiffies(TPM2_DURATION_SHORT);
- chip->vendor.duration[TPM_MEDIUM] =
+ chip->duration[TPM_MEDIUM] =
msecs_to_jiffies(TPM2_DURATION_MEDIUM);
- chip->vendor.duration[TPM_LONG] =
+ chip->duration[TPM_LONG] =
msecs_to_jiffies(TPM2_DURATION_LONG);
return 0;
}
@@ -527,7 +526,7 @@ int tpm_get_timeouts(struct tpm_chip *chip)
if (rc == TPM_ERR_INVALID_POSTINIT) {
/* The TPM is not started, we are the first to talk to it.
Execute a startup command. */
- dev_info(chip->pdev, "Issuing TPM_STARTUP");
+ dev_info(&chip->dev, "Issuing TPM_STARTUP");
if (tpm_startup(chip, TPM_ST_CLEAR))
return rc;
@@ -539,7 +538,7 @@ int tpm_get_timeouts(struct tpm_chip *chip)
NULL);
}
if (rc) {
- dev_err(chip->pdev,
+ dev_err(&chip->dev,
"A TPM error (%zd) occurred attempting to determine the timeouts\n",
rc);
goto duration;
@@ -561,10 +560,10 @@ int tpm_get_timeouts(struct tpm_chip *chip)
* of misreporting.
*/
if (chip->ops->update_timeouts != NULL)
- chip->vendor.timeout_adjusted =
+ chip->timeout_adjusted =
chip->ops->update_timeouts(chip, new_timeout);
- if (!chip->vendor.timeout_adjusted) {
+ if (!chip->timeout_adjusted) {
/* Don't overwrite default if value is 0 */
if (new_timeout[0] != 0 && new_timeout[0] < 1000) {
int i;
@@ -572,13 +571,13 @@ int tpm_get_timeouts(struct tpm_chip *chip)
/* timeouts in msec rather usec */
for (i = 0; i != ARRAY_SIZE(new_timeout); i++)
new_timeout[i] *= 1000;
- chip->vendor.timeout_adjusted = true;
+ chip->timeout_adjusted = true;
}
}
/* Report adjusted timeouts */
- if (chip->vendor.timeout_adjusted) {
- dev_info(chip->pdev,
+ if (chip->timeout_adjusted) {
+ dev_info(&chip->dev,
HW_ERR "Adjusting reported timeouts: A %lu->%luus B %lu->%luus C %lu->%luus D %lu->%luus\n",
old_timeout[0], new_timeout[0],
old_timeout[1], new_timeout[1],
@@ -586,10 +585,10 @@ int tpm_get_timeouts(struct tpm_chip *chip)
old_timeout[3], new_timeout[3]);
}
- chip->vendor.timeout_a = usecs_to_jiffies(new_timeout[0]);
- chip->vendor.timeout_b = usecs_to_jiffies(new_timeout[1]);
- chip->vendor.timeout_c = usecs_to_jiffies(new_timeout[2]);
- chip->vendor.timeout_d = usecs_to_jiffies(new_timeout[3]);
+ chip->timeout_a = usecs_to_jiffies(new_timeout[0]);
+ chip->timeout_b = usecs_to_jiffies(new_timeout[1]);
+ chip->timeout_c = usecs_to_jiffies(new_timeout[2]);
+ chip->timeout_d = usecs_to_jiffies(new_timeout[3]);
duration:
tpm_cmd.header.in = tpm_getcap_header;
@@ -608,11 +607,11 @@ duration:
return -EINVAL;
duration_cap = &tpm_cmd.params.getcap_out.cap.duration;
- chip->vendor.duration[TPM_SHORT] =
+ chip->duration[TPM_SHORT] =
usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_short));
- chip->vendor.duration[TPM_MEDIUM] =
+ chip->duration[TPM_MEDIUM] =
usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_medium));
- chip->vendor.duration[TPM_LONG] =
+ chip->duration[TPM_LONG] =
usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_long));
/* The Broadcom BCM0102 chipset in a Dell Latitude D820 gets the above
@@ -620,12 +619,12 @@ duration:
* fix up the resulting too-small TPM_SHORT value to make things work.
* We also scale the TPM_MEDIUM and -_LONG values by 1000.
*/
- if (chip->vendor.duration[TPM_SHORT] < (HZ / 100)) {
- chip->vendor.duration[TPM_SHORT] = HZ;
- chip->vendor.duration[TPM_MEDIUM] *= 1000;
- chip->vendor.duration[TPM_LONG] *= 1000;
- chip->vendor.duration_adjusted = true;
- dev_info(chip->pdev, "Adjusting TPM timeout parameters.");
+ if (chip->duration[TPM_SHORT] < (HZ / 100)) {
+ chip->duration[TPM_SHORT] = HZ;
+ chip->duration[TPM_MEDIUM] *= 1000;
+ chip->duration[TPM_LONG] *= 1000;
+ chip->duration_adjusted = true;
+ dev_info(&chip->dev, "Adjusting TPM timeout parameters.");
}
return 0;
}
@@ -700,7 +699,7 @@ int tpm_is_tpm2(u32 chip_num)
rc = (chip->flags & TPM_CHIP_FLAG_TPM2) != 0;
- tpm_chip_put(chip);
+ tpm_put_ops(chip);
return rc;
}
@@ -729,7 +728,7 @@ int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf)
rc = tpm2_pcr_read(chip, pcr_idx, res_buf);
else
rc = tpm_pcr_read_dev(chip, pcr_idx, res_buf);
- tpm_chip_put(chip);
+ tpm_put_ops(chip);
return rc;
}
EXPORT_SYMBOL_GPL(tpm_pcr_read);
@@ -764,7 +763,7 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash)
if (chip->flags & TPM_CHIP_FLAG_TPM2) {
rc = tpm2_pcr_extend(chip, pcr_idx, hash);
- tpm_chip_put(chip);
+ tpm_put_ops(chip);
return rc;
}
@@ -774,7 +773,7 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash)
rc = tpm_transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE,
"attempting extend a PCR value");
- tpm_chip_put(chip);
+ tpm_put_ops(chip);
return rc;
}
EXPORT_SYMBOL_GPL(tpm_pcr_extend);
@@ -815,7 +814,9 @@ int tpm_do_selftest(struct tpm_chip *chip)
* around 300ms while the self test is ongoing, keep trying
* until the self test duration expires. */
if (rc == -ETIME) {
- dev_info(chip->pdev, HW_ERR "TPM command timed out during continue self test");
+ dev_info(
+ &chip->dev, HW_ERR
+ "TPM command timed out during continue self test");
msleep(delay_msec);
continue;
}
@@ -825,7 +826,7 @@ int tpm_do_selftest(struct tpm_chip *chip)
rc = be32_to_cpu(cmd.header.out.return_code);
if (rc == TPM_ERR_DISABLED || rc == TPM_ERR_DEACTIVATED) {
- dev_info(chip->pdev,
+ dev_info(&chip->dev,
"TPM is disabled/deactivated (0x%X)\n", rc);
/* TPM is disabled and/or deactivated; driver can
* proceed and TPM does handle commands for
@@ -842,6 +843,33 @@ int tpm_do_selftest(struct tpm_chip *chip)
}
EXPORT_SYMBOL_GPL(tpm_do_selftest);
+/**
+ * tpm1_auto_startup - Perform the standard automatic TPM initialization
+ * sequence
+ * @chip: TPM chip to use
+ *
+ * Returns 0 on success, < 0 in case of fatal error.
+ */
+int tpm1_auto_startup(struct tpm_chip *chip)
+{
+ int rc;
+
+ rc = tpm_get_timeouts(chip);
+ if (rc)
+ goto out;
+ rc = tpm_do_selftest(chip);
+ if (rc) {
+ dev_err(&chip->dev, "TPM self test failed\n");
+ goto out;
+ }
+
+ return rc;
+out:
+ if (rc > 0)
+ rc = -ENODEV;
+ return rc;
+}
+
int tpm_send(u32 chip_num, void *cmd, size_t buflen)
{
struct tpm_chip *chip;
@@ -853,7 +881,7 @@ int tpm_send(u32 chip_num, void *cmd, size_t buflen)
rc = tpm_transmit_cmd(chip, cmd, buflen, "attempting tpm_cmd");
- tpm_chip_put(chip);
+ tpm_put_ops(chip);
return rc;
}
EXPORT_SYMBOL_GPL(tpm_send);
@@ -888,7 +916,7 @@ int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
stop = jiffies + timeout;
- if (chip->vendor.irq) {
+ if (chip->flags & TPM_CHIP_FLAG_IRQ) {
again:
timeout = stop - jiffies;
if ((long)timeout <= 0)
@@ -978,10 +1006,10 @@ int tpm_pm_suspend(struct device *dev)
}
if (rc)
- dev_err(chip->pdev,
+ dev_err(&chip->dev,
"Error (%d) sending savestate before suspend\n", rc);
else if (try > 0)
- dev_warn(chip->pdev, "TPM savestate took %dms\n",
+ dev_warn(&chip->dev, "TPM savestate took %dms\n",
try * TPM_TIMEOUT_RETRY);
return rc;
@@ -1035,7 +1063,7 @@ int tpm_get_random(u32 chip_num, u8 *out, size_t max)
if (chip->flags & TPM_CHIP_FLAG_TPM2) {
err = tpm2_get_random(chip, out, max);
- tpm_chip_put(chip);
+ tpm_put_ops(chip);
return err;
}
@@ -1057,7 +1085,7 @@ int tpm_get_random(u32 chip_num, u8 *out, size_t max)
num_bytes -= recd;
} while (retries-- && total < max);
- tpm_chip_put(chip);
+ tpm_put_ops(chip);
return total ? total : -EIO;
}
EXPORT_SYMBOL_GPL(tpm_get_random);
@@ -1083,7 +1111,7 @@ int tpm_seal_trusted(u32 chip_num, struct trusted_key_payload *payload,
rc = tpm2_seal_trusted(chip, payload, options);
- tpm_chip_put(chip);
+ tpm_put_ops(chip);
return rc;
}
EXPORT_SYMBOL_GPL(tpm_seal_trusted);
@@ -1109,7 +1137,8 @@ int tpm_unseal_trusted(u32 chip_num, struct trusted_key_payload *payload,
rc = tpm2_unseal_trusted(chip, payload, options);
- tpm_chip_put(chip);
+ tpm_put_ops(chip);
+
return rc;
}
EXPORT_SYMBOL_GPL(tpm_unseal_trusted);
@@ -1136,6 +1165,7 @@ static int __init tpm_init(void)
static void __exit tpm_exit(void)
{
+ idr_destroy(&dev_nums_idr);
class_destroy(tpm_class);
unregister_chrdev_region(tpm_devt, TPM_NUM_DEVICES);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.