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-rw-r--r--drivers/char/tpm/st33zp24/st33zp24.c2
-rw-r--r--drivers/char/tpm/tpm-dev.c2
-rw-r--r--drivers/char/tpm/tpm-interface.c84
-rw-r--r--drivers/char/tpm/tpm-sysfs.c4
-rw-r--r--drivers/char/tpm/tpm.h46
-rw-r--r--drivers/char/tpm/tpm2-cmd.c124
-rw-r--r--drivers/char/tpm/tpm_crb.c50
-rw-r--r--drivers/char/tpm/tpm_tis_core.c24
8 files changed, 171 insertions, 165 deletions
diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c
index c2ee30451e41..6f060c76217b 100644
--- a/drivers/char/tpm/st33zp24/st33zp24.c
+++ b/drivers/char/tpm/st33zp24/st33zp24.c
@@ -589,8 +589,6 @@ int st33zp24_probe(void *phy_id, const struct st33zp24_phy_ops *ops,
chip->flags |= TPM_CHIP_FLAG_IRQ;
disable_irq_nosync(tpm_dev->irq);
-
- tpm_gen_interrupt(chip);
}
return tpm_chip_register(chip);
diff --git a/drivers/char/tpm/tpm-dev.c b/drivers/char/tpm/tpm-dev.c
index f5d452151c6b..912ad30be585 100644
--- a/drivers/char/tpm/tpm-dev.c
+++ b/drivers/char/tpm/tpm-dev.c
@@ -145,7 +145,7 @@ static ssize_t tpm_write(struct file *file, const char __user *buf,
return -EPIPE;
}
out_size = tpm_transmit(priv->chip, priv->data_buffer,
- sizeof(priv->data_buffer));
+ sizeof(priv->data_buffer), 0);
tpm_put_ops(priv->chip);
if (out_size < 0) {
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 1abe2d7a2610..8de61876f633 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -330,13 +330,16 @@ EXPORT_SYMBOL_GPL(tpm_calc_ordinal_duration);
/*
* Internal kernel interface to transmit TPM commands
*/
-ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
- size_t bufsiz)
+ssize_t tpm_transmit(struct tpm_chip *chip, const u8 *buf, size_t bufsiz,
+ unsigned int flags)
{
ssize_t rc;
u32 count, ordinal;
unsigned long stop;
+ if (bufsiz < TPM_HEADER_SIZE)
+ return -EINVAL;
+
if (bufsiz > TPM_BUFSIZE)
bufsiz = TPM_BUFSIZE;
@@ -350,7 +353,8 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
return -E2BIG;
}
- mutex_lock(&chip->tpm_mutex);
+ if (!(flags & TPM_TRANSMIT_UNLOCKED))
+ mutex_lock(&chip->tpm_mutex);
rc = chip->ops->send(chip, (u8 *) buf, count);
if (rc < 0) {
@@ -393,20 +397,21 @@ out_recv:
dev_err(&chip->dev,
"tpm_transmit: tpm_recv: error %zd\n", rc);
out:
- mutex_unlock(&chip->tpm_mutex);
+ if (!(flags & TPM_TRANSMIT_UNLOCKED))
+ mutex_unlock(&chip->tpm_mutex);
return rc;
}
#define TPM_DIGEST_SIZE 20
#define TPM_RET_CODE_IDX 6
-ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd,
- int len, const char *desc)
+ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *cmd,
+ int len, unsigned int flags, const char *desc)
{
- struct tpm_output_header *header;
+ const struct tpm_output_header *header;
int err;
- len = tpm_transmit(chip, (u8 *) cmd, len);
+ len = tpm_transmit(chip, (const u8 *)cmd, len, flags);
if (len < 0)
return len;
else if (len < TPM_HEADER_SIZE)
@@ -453,26 +458,13 @@ ssize_t tpm_getcap(struct tpm_chip *chip, __be32 subcap_id, cap_t *cap,
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = subcap_id;
}
- rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, desc);
+ rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
+ desc);
if (!rc)
*cap = tpm_cmd.params.getcap_out.cap;
return rc;
}
-
-void tpm_gen_interrupt(struct tpm_chip *chip)
-{
- struct tpm_cmd_t tpm_cmd;
- ssize_t rc;
-
- tpm_cmd.header.in = tpm_getcap_header;
- tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
- tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
- tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT;
-
- rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE,
- "attempting to determine the timeouts");
-}
-EXPORT_SYMBOL_GPL(tpm_gen_interrupt);
+EXPORT_SYMBOL_GPL(tpm_getcap);
#define TPM_ORD_STARTUP cpu_to_be32(153)
#define TPM_ST_CLEAR cpu_to_be16(1)
@@ -490,7 +482,7 @@ static int tpm_startup(struct tpm_chip *chip, __be16 startup_type)
start_cmd.header.in = tpm_startup_header;
start_cmd.params.startup_in.startup_type = startup_type;
- return tpm_transmit_cmd(chip, &start_cmd, TPM_INTERNAL_RESULT_SIZE,
+ return tpm_transmit_cmd(chip, &start_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
"attempting to start the TPM");
}
@@ -521,7 +513,8 @@ int tpm_get_timeouts(struct tpm_chip *chip)
tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT;
- rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, NULL);
+ rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
+ NULL);
if (rc == TPM_ERR_INVALID_POSTINIT) {
/* The TPM is not started, we are the first to talk to it.
@@ -535,7 +528,7 @@ int tpm_get_timeouts(struct tpm_chip *chip)
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT;
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE,
- NULL);
+ 0, NULL);
}
if (rc) {
dev_err(&chip->dev,
@@ -596,7 +589,7 @@ duration:
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_DURATION;
- rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE,
+ rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
"attempting to determine the durations");
if (rc)
return rc;
@@ -633,7 +626,7 @@ EXPORT_SYMBOL_GPL(tpm_get_timeouts);
#define TPM_ORD_CONTINUE_SELFTEST 83
#define CONTINUE_SELFTEST_RESULT_SIZE 10
-static struct tpm_input_header continue_selftest_header = {
+static const struct tpm_input_header continue_selftest_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(10),
.ordinal = cpu_to_be32(TPM_ORD_CONTINUE_SELFTEST),
@@ -652,14 +645,14 @@ static int tpm_continue_selftest(struct tpm_chip *chip)
struct tpm_cmd_t cmd;
cmd.header.in = continue_selftest_header;
- rc = tpm_transmit_cmd(chip, &cmd, CONTINUE_SELFTEST_RESULT_SIZE,
+ rc = tpm_transmit_cmd(chip, &cmd, CONTINUE_SELFTEST_RESULT_SIZE, 0,
"continue selftest");
return rc;
}
#define TPM_ORDINAL_PCRREAD cpu_to_be32(21)
#define READ_PCR_RESULT_SIZE 30
-static struct tpm_input_header pcrread_header = {
+static const struct tpm_input_header pcrread_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(14),
.ordinal = TPM_ORDINAL_PCRREAD
@@ -672,7 +665,7 @@ int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
cmd.header.in = pcrread_header;
cmd.params.pcrread_in.pcr_idx = cpu_to_be32(pcr_idx);
- rc = tpm_transmit_cmd(chip, &cmd, READ_PCR_RESULT_SIZE,
+ rc = tpm_transmit_cmd(chip, &cmd, READ_PCR_RESULT_SIZE, 0,
"attempting to read a pcr value");
if (rc == 0)
@@ -745,7 +738,7 @@ EXPORT_SYMBOL_GPL(tpm_pcr_read);
*/
#define TPM_ORD_PCR_EXTEND cpu_to_be32(20)
#define EXTEND_PCR_RESULT_SIZE 34
-static struct tpm_input_header pcrextend_header = {
+static const struct tpm_input_header pcrextend_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(34),
.ordinal = TPM_ORD_PCR_EXTEND
@@ -770,7 +763,7 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash)
cmd.header.in = pcrextend_header;
cmd.params.pcrextend_in.pcr_idx = cpu_to_be32(pcr_idx);
memcpy(cmd.params.pcrextend_in.hash, hash, TPM_DIGEST_SIZE);
- rc = tpm_transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE,
+ rc = tpm_transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE, 0,
"attempting extend a PCR value");
tpm_put_ops(chip);
@@ -792,7 +785,7 @@ int tpm_do_selftest(struct tpm_chip *chip)
unsigned int loops;
unsigned int delay_msec = 100;
unsigned long duration;
- struct tpm_cmd_t cmd;
+ u8 dummy[TPM_DIGEST_SIZE];
duration = tpm_calc_ordinal_duration(chip, TPM_ORD_CONTINUE_SELFTEST);
@@ -807,9 +800,8 @@ int tpm_do_selftest(struct tpm_chip *chip)
do {
/* Attempt to read a PCR value */
- cmd.header.in = pcrread_header;
- cmd.params.pcrread_in.pcr_idx = cpu_to_be32(0);
- rc = tpm_transmit(chip, (u8 *) &cmd, READ_PCR_RESULT_SIZE);
+ rc = tpm_pcr_read_dev(chip, 0, dummy);
+
/* Some buggy TPMs will not respond to tpm_tis_ready() for
* around 300ms while the self test is ongoing, keep trying
* until the self test duration expires. */
@@ -824,7 +816,6 @@ int tpm_do_selftest(struct tpm_chip *chip)
if (rc < TPM_HEADER_SIZE)
return -EFAULT;
- rc = be32_to_cpu(cmd.header.out.return_code);
if (rc == TPM_ERR_DISABLED || rc == TPM_ERR_DEACTIVATED) {
dev_info(&chip->dev,
"TPM is disabled/deactivated (0x%X)\n", rc);
@@ -879,7 +870,7 @@ int tpm_send(u32 chip_num, void *cmd, size_t buflen)
if (chip == NULL)
return -ENODEV;
- rc = tpm_transmit_cmd(chip, cmd, buflen, "attempting tpm_cmd");
+ rc = tpm_transmit_cmd(chip, cmd, buflen, 0, "attempting tpm_cmd");
tpm_put_ops(chip);
return rc;
@@ -949,7 +940,7 @@ EXPORT_SYMBOL_GPL(wait_for_tpm_stat);
#define TPM_ORD_SAVESTATE cpu_to_be32(152)
#define SAVESTATE_RESULT_SIZE 10
-static struct tpm_input_header savestate_header = {
+static const struct tpm_input_header savestate_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(10),
.ordinal = TPM_ORD_SAVESTATE
@@ -981,14 +972,15 @@ int tpm_pm_suspend(struct device *dev)
cmd.params.pcrextend_in.pcr_idx = cpu_to_be32(tpm_suspend_pcr);
memcpy(cmd.params.pcrextend_in.hash, dummy_hash,
TPM_DIGEST_SIZE);
- rc = tpm_transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE,
+ rc = tpm_transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE, 0,
"extending dummy pcr before suspend");
}
/* now do the actual savestate */
for (try = 0; try < TPM_RETRY; try++) {
cmd.header.in = savestate_header;
- rc = tpm_transmit_cmd(chip, &cmd, SAVESTATE_RESULT_SIZE, NULL);
+ rc = tpm_transmit_cmd(chip, &cmd, SAVESTATE_RESULT_SIZE, 0,
+ NULL);
/*
* If the TPM indicates that it is too busy to respond to
@@ -1032,7 +1024,7 @@ int tpm_pm_resume(struct device *dev)
EXPORT_SYMBOL_GPL(tpm_pm_resume);
#define TPM_GETRANDOM_RESULT_SIZE 18
-static struct tpm_input_header tpm_getrandom_header = {
+static const struct tpm_input_header tpm_getrandom_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(14),
.ordinal = TPM_ORD_GET_RANDOM
@@ -1072,8 +1064,8 @@ int tpm_get_random(u32 chip_num, u8 *out, size_t max)
tpm_cmd.params.getrandom_in.num_bytes = cpu_to_be32(num_bytes);
err = tpm_transmit_cmd(chip, &tpm_cmd,
- TPM_GETRANDOM_RESULT_SIZE + num_bytes,
- "attempting get random");
+ TPM_GETRANDOM_RESULT_SIZE + num_bytes,
+ 0, "attempting get random");
if (err)
break;
diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c
index b46cf70c8b16..a76ab4af9fb2 100644
--- a/drivers/char/tpm/tpm-sysfs.c
+++ b/drivers/char/tpm/tpm-sysfs.c
@@ -22,7 +22,7 @@
#define READ_PUBEK_RESULT_SIZE 314
#define TPM_ORD_READPUBEK cpu_to_be32(124)
-static struct tpm_input_header tpm_readpubek_header = {
+static const struct tpm_input_header tpm_readpubek_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(30),
.ordinal = TPM_ORD_READPUBEK
@@ -39,7 +39,7 @@ static ssize_t pubek_show(struct device *dev, struct device_attribute *attr,
struct tpm_chip *chip = to_tpm_chip(dev);
tpm_cmd.header.in = tpm_readpubek_header;
- err = tpm_transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE,
+ err = tpm_transmit_cmd(chip, &tpm_cmd, READ_PUBEK_RESULT_SIZE, 0,
"attempting to read the PUBEK");
if (err)
goto out;
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 3e32d5bd2dc6..4d183c97f6a6 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -476,32 +476,35 @@ extern dev_t tpm_devt;
extern const struct file_operations tpm_fops;
extern struct idr dev_nums_idr;
+enum tpm_transmit_flags {
+ TPM_TRANSMIT_UNLOCKED = BIT(0),
+};
+
+ssize_t tpm_transmit(struct tpm_chip *chip, const u8 *buf, size_t bufsiz,
+ unsigned int flags);
+ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *cmd, int len,
+ unsigned int flags, const char *desc);
ssize_t tpm_getcap(struct tpm_chip *chip, __be32 subcap_id, cap_t *cap,
const char *desc);
-ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
- size_t bufsiz);
-ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd, int len,
- const char *desc);
-extern int tpm_get_timeouts(struct tpm_chip *);
-extern void tpm_gen_interrupt(struct tpm_chip *);
+int tpm_get_timeouts(struct tpm_chip *);
int tpm1_auto_startup(struct tpm_chip *chip);
-extern int tpm_do_selftest(struct tpm_chip *);
-extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32);
-extern int tpm_pm_suspend(struct device *);
-extern int tpm_pm_resume(struct device *);
-extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long,
- wait_queue_head_t *, bool);
+int tpm_do_selftest(struct tpm_chip *chip);
+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);
+int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
+ wait_queue_head_t *queue, bool check_cancel);
struct tpm_chip *tpm_chip_find_get(int chip_num);
__must_check int tpm_try_get_ops(struct tpm_chip *chip);
void tpm_put_ops(struct tpm_chip *chip);
-extern struct tpm_chip *tpm_chip_alloc(struct device *dev,
- const struct tpm_class_ops *ops);
-extern struct tpm_chip *tpmm_chip_alloc(struct device *pdev,
- const struct tpm_class_ops *ops);
-extern int tpm_chip_register(struct tpm_chip *chip);
-extern void tpm_chip_unregister(struct tpm_chip *chip);
+struct tpm_chip *tpm_chip_alloc(struct device *dev,
+ const struct tpm_class_ops *ops);
+struct tpm_chip *tpmm_chip_alloc(struct device *pdev,
+ const struct tpm_class_ops *ops);
+int tpm_chip_register(struct tpm_chip *chip);
+void tpm_chip_unregister(struct tpm_chip *chip);
void tpm_sysfs_add_device(struct tpm_chip *chip);
@@ -528,8 +531,7 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
u32 *value, const char *desc);
int tpm2_auto_startup(struct tpm_chip *chip);
-extern void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
-extern unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *, u32);
-extern int tpm2_gen_interrupt(struct tpm_chip *chip);
-extern int tpm2_probe(struct tpm_chip *chip);
+void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
+unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
+int tpm2_probe(struct tpm_chip *chip);
#endif
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index 08c7e23ed535..7df55d58c939 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -282,7 +282,7 @@ int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
sizeof(cmd.params.pcrread_in.pcr_select));
cmd.params.pcrread_in.pcr_select[pcr_idx >> 3] = 1 << (pcr_idx & 0x7);
- rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd),
+ rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0,
"attempting to read a pcr value");
if (rc == 0) {
buf = cmd.params.pcrread_out.digest;
@@ -330,7 +330,7 @@ int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash)
cmd.params.pcrextend_in.hash_alg = cpu_to_be16(TPM2_ALG_SHA1);
memcpy(cmd.params.pcrextend_in.digest, hash, TPM_DIGEST_SIZE);
- rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd),
+ rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0,
"attempting extend a PCR value");
return rc;
@@ -376,7 +376,7 @@ int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max)
cmd.header.in = tpm2_getrandom_header;
cmd.params.getrandom_in.size = cpu_to_be16(num_bytes);
- err = tpm_transmit_cmd(chip, &cmd, sizeof(cmd),
+ err = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0,
"attempting get random");
if (err)
break;
@@ -434,12 +434,12 @@ static void tpm2_buf_append_auth(struct tpm_buf *buf, u32 session_handle,
}
/**
- * tpm2_seal_trusted() - seal a trusted key
- * @chip_num: A specific chip number for the request or TPM_ANY_NUM
- * @options: authentication values and other options
+ * tpm2_seal_trusted() - seal the payload of a trusted key
+ * @chip_num: TPM chip to use
* @payload: the key data in clear and encrypted form
+ * @options: authentication values and other options
*
- * Returns < 0 on error and 0 on success.
+ * Return: < 0 on error and 0 on success.
*/
int tpm2_seal_trusted(struct tpm_chip *chip,
struct trusted_key_payload *payload,
@@ -512,7 +512,7 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
goto out;
}
- rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "sealing data");
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, 0, "sealing data");
if (rc)
goto out;
@@ -538,10 +538,18 @@ out:
return rc;
}
-static int tpm2_load(struct tpm_chip *chip,
- struct trusted_key_payload *payload,
- struct trusted_key_options *options,
- u32 *blob_handle)
+/**
+ * tpm2_load_cmd() - execute a TPM2_Load command
+ * @chip_num: TPM chip to use
+ * @payload: the key data in clear and encrypted form
+ * @options: authentication values and other options
+ *
+ * Return: same as with tpm_transmit_cmd
+ */
+static int tpm2_load_cmd(struct tpm_chip *chip,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options,
+ u32 *blob_handle, unsigned int flags)
{
struct tpm_buf buf;
unsigned int private_len;
@@ -576,7 +584,7 @@ static int tpm2_load(struct tpm_chip *chip,
goto out;
}
- rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "loading blob");
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, flags, "loading blob");
if (!rc)
*blob_handle = be32_to_cpup(
(__be32 *) &buf.data[TPM_HEADER_SIZE]);
@@ -590,7 +598,16 @@ out:
return rc;
}
-static void tpm2_flush_context(struct tpm_chip *chip, u32 handle)
+/**
+ * tpm2_flush_context_cmd() - execute a TPM2_FlushContext command
+ * @chip_num: TPM chip to use
+ * @payload: the key data in clear and encrypted form
+ * @options: authentication values and other options
+ *
+ * Return: same as with tpm_transmit_cmd
+ */
+static void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
+ unsigned int flags)
{
struct tpm_buf buf;
int rc;
@@ -604,7 +621,8 @@ static void tpm2_flush_context(struct tpm_chip *chip, u32 handle)
tpm_buf_append_u32(&buf, handle);
- rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "flushing context");
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, flags,
+ "flushing context");
if (rc)
dev_warn(&chip->dev, "0x%08x was not flushed, rc=%d\n", handle,
rc);
@@ -612,10 +630,18 @@ static void tpm2_flush_context(struct tpm_chip *chip, u32 handle)
tpm_buf_destroy(&buf);
}
-static int tpm2_unseal(struct tpm_chip *chip,
- struct trusted_key_payload *payload,
- struct trusted_key_options *options,
- u32 blob_handle)
+/**
+ * tpm2_unseal_cmd() - execute a TPM2_Unload command
+ * @chip_num: TPM chip to use
+ * @payload: the key data in clear and encrypted form
+ * @options: authentication values and other options
+ *
+ * Return: same as with tpm_transmit_cmd
+ */
+static int tpm2_unseal_cmd(struct tpm_chip *chip,
+ struct trusted_key_payload *payload,
+ struct trusted_key_options *options,
+ u32 blob_handle, unsigned int flags)
{
struct tpm_buf buf;
u16 data_len;
@@ -635,7 +661,7 @@ static int tpm2_unseal(struct tpm_chip *chip,
options->blobauth /* hmac */,
TPM_DIGEST_SIZE);
- rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "unsealing");
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, flags, "unsealing");
if (rc > 0)
rc = -EPERM;
@@ -654,12 +680,12 @@ static int tpm2_unseal(struct tpm_chip *chip,
}
/**
- * tpm_unseal_trusted() - unseal a trusted key
- * @chip_num: A specific chip number for the request or TPM_ANY_NUM
- * @options: authentication values and other options
+ * tpm_unseal_trusted() - unseal the payload of a trusted key
+ * @chip_num: TPM chip to use
* @payload: the key data in clear and encrypted form
+ * @options: authentication values and other options
*
- * Returns < 0 on error and 0 on success.
+ * Return: < 0 on error and 0 on success.
*/
int tpm2_unseal_trusted(struct tpm_chip *chip,
struct trusted_key_payload *payload,
@@ -668,14 +694,17 @@ int tpm2_unseal_trusted(struct tpm_chip *chip,
u32 blob_handle;
int rc;
- rc = tpm2_load(chip, payload, options, &blob_handle);
+ mutex_lock(&chip->tpm_mutex);
+ rc = tpm2_load_cmd(chip, payload, options, &blob_handle,
+ TPM_TRANSMIT_UNLOCKED);
if (rc)
- return rc;
-
- rc = tpm2_unseal(chip, payload, options, blob_handle);
-
- tpm2_flush_context(chip, blob_handle);
+ goto out;
+ rc = tpm2_unseal_cmd(chip, payload, options, blob_handle,
+ TPM_TRANSMIT_UNLOCKED);
+ tpm2_flush_context_cmd(chip, blob_handle, TPM_TRANSMIT_UNLOCKED);
+out:
+ mutex_unlock(&chip->tpm_mutex);
return rc;
}
@@ -701,12 +730,13 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id, u32 *value,
cmd.params.get_tpm_pt_in.property_id = cpu_to_be32(property_id);
cmd.params.get_tpm_pt_in.property_cnt = cpu_to_be32(1);
- rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), desc);
+ rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0, desc);
if (!rc)
*value = be32_to_cpu(cmd.params.get_tpm_pt_out.value);
return rc;
}
+EXPORT_SYMBOL_GPL(tpm2_get_tpm_pt);
#define TPM2_STARTUP_IN_SIZE \
(sizeof(struct tpm_input_header) + \
@@ -735,7 +765,7 @@ static int tpm2_startup(struct tpm_chip *chip, u16 startup_type)
cmd.header.in = tpm2_startup_header;
cmd.params.startup_in.startup_type = cpu_to_be16(startup_type);
- return tpm_transmit_cmd(chip, &cmd, sizeof(cmd),
+ return tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0,
"attempting to start the TPM");
}
@@ -763,7 +793,7 @@ void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type)
cmd.header.in = tpm2_shutdown_header;
cmd.params.startup_in.startup_type = cpu_to_be16(shutdown_type);
- rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), "stopping the TPM");
+ rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0, "stopping the TPM");
/* In places where shutdown command is sent there's no much we can do
* except print the error code on a system failure.
@@ -828,7 +858,7 @@ static int tpm2_start_selftest(struct tpm_chip *chip, bool full)
cmd.header.in = tpm2_selftest_header;
cmd.params.selftest_in.full_test = full;
- rc = tpm_transmit_cmd(chip, &cmd, TPM2_SELF_TEST_IN_SIZE,
+ rc = tpm_transmit_cmd(chip, &cmd, TPM2_SELF_TEST_IN_SIZE, 0,
"continue selftest");
/* At least some prototype chips seem to give RC_TESTING error
@@ -880,7 +910,7 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
cmd.params.pcrread_in.pcr_select[1] = 0x00;
cmd.params.pcrread_in.pcr_select[2] = 0x00;
- rc = tpm_transmit_cmd(chip, (u8 *) &cmd, sizeof(cmd), NULL);
+ rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0, NULL);
if (rc < 0)
break;
@@ -895,23 +925,6 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
}
/**
- * tpm2_gen_interrupt() - generate an interrupt
- * @chip: TPM chip to use
- *
- * 0 is returned when the operation is successful. If a negative number is
- * returned it remarks a POSIX error code. If a positive number is returned
- * it remarks a TPM error.
- */
-int tpm2_gen_interrupt(struct tpm_chip *chip)
-{
- u32 dummy;
-
- return tpm2_get_tpm_pt(chip, 0x100, &dummy,
- "attempting to generate an interrupt");
-}
-EXPORT_SYMBOL_GPL(tpm2_gen_interrupt);
-
-/**
* tpm2_probe() - probe TPM 2.0
* @chip: TPM chip to use
*
@@ -928,11 +941,9 @@ int tpm2_probe(struct tpm_chip *chip)
cmd.params.get_tpm_pt_in.property_id = cpu_to_be32(0x100);
cmd.params.get_tpm_pt_in.property_cnt = cpu_to_be32(1);
- rc = tpm_transmit(chip, (const char *) &cmd, sizeof(cmd));
+ rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), 0, NULL);
if (rc < 0)
return rc;
- else if (rc < TPM_HEADER_SIZE)
- return -EFAULT;
if (be16_to_cpu(cmd.header.out.tag) == TPM2_ST_NO_SESSIONS)
chip->flags |= TPM_CHIP_FLAG_TPM2;
@@ -957,7 +968,7 @@ int tpm2_auto_startup(struct tpm_chip *chip)
goto out;
rc = tpm2_do_selftest(chip);
- if (rc != TPM2_RC_INITIALIZE) {
+ if (rc != 0 && rc != TPM2_RC_INITIALIZE) {
dev_err(&chip->dev, "TPM self test failed\n");
goto out;
}
@@ -974,7 +985,6 @@ int tpm2_auto_startup(struct tpm_chip *chip)
}
}
- return rc;
out:
if (rc > 0)
rc = -ENODEV;
diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
index 018c382554ba..a7c870af916c 100644
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -19,7 +19,6 @@
#include <linux/highmem.h>
#include <linux/rculist.h>
#include <linux/module.h>
-#include <linux/platform_device.h>
#include "tpm.h"
#define ACPI_SIG_TPM2 "TPM2"
@@ -34,14 +33,14 @@ enum crb_defaults {
CRB_ACPI_START_INDEX = 1,
};
-enum crb_ca_request {
- CRB_CA_REQ_GO_IDLE = BIT(0),
- CRB_CA_REQ_CMD_READY = BIT(1),
+enum crb_ctrl_req {
+ CRB_CTRL_REQ_CMD_READY = BIT(0),
+ CRB_CTRL_REQ_GO_IDLE = BIT(1),
};
-enum crb_ca_status {
- CRB_CA_STS_ERROR = BIT(0),
- CRB_CA_STS_TPM_IDLE = BIT(1),
+enum crb_ctrl_sts {
+ CRB_CTRL_STS_ERROR = BIT(0),
+ CRB_CTRL_STS_TPM_IDLE = BIT(1),
};
enum crb_start {
@@ -67,7 +66,7 @@ struct crb_control_area {
} __packed;
enum crb_status {
- CRB_STS_COMPLETE = BIT(0),
+ CRB_DRV_STS_COMPLETE = BIT(0),
};
enum crb_flags {
@@ -81,6 +80,7 @@ struct crb_priv {
struct crb_control_area __iomem *cca;
u8 __iomem *cmd;
u8 __iomem *rsp;
+ u32 cmd_size;
};
static SIMPLE_DEV_PM_OPS(crb_pm, tpm_pm_suspend, tpm_pm_resume);
@@ -92,7 +92,7 @@ static u8 crb_status(struct tpm_chip *chip)
if ((ioread32(&priv->cca->start) & CRB_START_INVOKE) !=
CRB_START_INVOKE)
- sts |= CRB_STS_COMPLETE;
+ sts |= CRB_DRV_STS_COMPLETE;
return sts;
}
@@ -106,7 +106,7 @@ static int crb_recv(struct tpm_chip *chip, u8 *buf, size_t count)
if (count < 6)
return -EIO;
- if (ioread32(&priv->cca->sts) & CRB_CA_STS_ERROR)
+ if (ioread32(&priv->cca->sts) & CRB_CTRL_STS_ERROR)
return -EIO;
memcpy_fromio(buf, priv->rsp, 6);
@@ -142,11 +142,14 @@ static int crb_send(struct tpm_chip *chip, u8 *buf, size_t len)
struct crb_priv *priv = dev_get_drvdata(&chip->dev);
int rc = 0;
- if (len > ioread32(&priv->cca->cmd_size)) {
- dev_err(&chip->dev,
- "invalid command count value %x %zx\n",
- (unsigned int) len,
- (size_t) ioread32(&priv->cca->cmd_size));
+ /* Zero the cancel register so that the next command will not get
+ * canceled.
+ */
+ iowrite32(0, &priv->cca->cancel);
+
+ if (len > priv->cmd_size) {
+ dev_err(&chip->dev, "invalid command count value %zd %d\n",
+ len, priv->cmd_size);
return -E2BIG;
}
@@ -156,7 +159,7 @@ static int crb_send(struct tpm_chip *chip, u8 *buf, size_t len)
wmb();
if (priv->flags & CRB_FL_CRB_START)
- iowrite32(cpu_to_le32(CRB_START_INVOKE), &priv->cca->start);
+ iowrite32(CRB_START_INVOKE, &priv->cca->start);
if (priv->flags & CRB_FL_ACPI_START)
rc = crb_do_acpi_start(chip);
@@ -168,15 +171,10 @@ static void crb_cancel(struct tpm_chip *chip)
{
struct crb_priv *priv = dev_get_drvdata(&chip->dev);
- iowrite32(cpu_to_le32(CRB_CANCEL_INVOKE), &priv->cca->cancel);
-
- /* Make sure that cmd is populated before issuing cancel. */
- wmb();
+ iowrite32(CRB_CANCEL_INVOKE, &priv->cca->cancel);
if ((priv->flags & CRB_FL_ACPI_START) && crb_do_acpi_start(chip))
dev_err(&chip->dev, "ACPI Start failed\n");
-
- iowrite32(0, &priv->cca->cancel);
}
static bool crb_req_canceled(struct tpm_chip *chip, u8 status)
@@ -194,8 +192,8 @@ static const struct tpm_class_ops tpm_crb = {
.send = crb_send,
.cancel = crb_cancel,
.req_canceled = crb_req_canceled,
- .req_complete_mask = CRB_STS_COMPLETE,
- .req_complete_val = CRB_STS_COMPLETE,
+ .req_complete_mask = CRB_DRV_STS_COMPLETE,
+ .req_complete_val = CRB_DRV_STS_COMPLETE,
};
static int crb_init(struct acpi_device *device, struct crb_priv *priv)
@@ -265,8 +263,7 @@ static int crb_map_io(struct acpi_device *device, struct crb_priv *priv,
acpi_dev_free_resource_list(&resources);
if (resource_type(&io_res) != IORESOURCE_MEM) {
- dev_err(dev,
- FW_BUG "TPM2 ACPI table does not define a memory resource\n");
+ dev_err(dev, FW_BUG "TPM2 ACPI table does not define a memory resource\n");
return -EINVAL;
}
@@ -302,6 +299,7 @@ static int crb_map_io(struct acpi_device *device, struct crb_priv *priv,
dev_err(dev, FW_BUG "overlapping command and response buffer sizes are not identical");
return -EINVAL;
}
+ priv->cmd_size = cmd_size;
priv->rsp = priv->cmd;
return 0;
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index d66f51b3648e..e3bf31b37138 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -440,7 +440,6 @@ static int probe_itpm(struct tpm_chip *chip)
0x00, 0x00, 0x00, 0xf1
};
size_t len = sizeof(cmd_getticks);
- bool itpm;
u16 vendor;
rc = tpm_tis_read16(priv, TPM_DID_VID(0), &vendor);
@@ -451,8 +450,6 @@ static int probe_itpm(struct tpm_chip *chip)
if (vendor != TPM_VID_INTEL)
return 0;
- itpm = false;
-
rc = tpm_tis_send_data(chip, cmd_getticks, len);
if (rc == 0)
goto out;
@@ -460,8 +457,6 @@ static int probe_itpm(struct tpm_chip *chip)
tpm_tis_ready(chip);
release_locality(chip, priv->locality, 0);
- itpm = true;
-
rc = tpm_tis_send_data(chip, cmd_getticks, len);
if (rc == 0) {
dev_info(&chip->dev, "Detected an iTPM.\n");
@@ -526,6 +521,18 @@ static irqreturn_t tis_int_handler(int dummy, void *dev_id)
return IRQ_HANDLED;
}
+static int tpm_tis_gen_interrupt(struct tpm_chip *chip)
+{
+ const char *desc = "attempting to generate an interrupt";
+ u32 cap2;
+ cap_t cap;
+
+ 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);
+}
+
/* Register the IRQ and issue a command that will cause an interrupt. If an
* irq is seen then leave the chip setup for IRQ operation, otherwise reverse
* everything and leave in polling mode. Returns 0 on success.
@@ -575,10 +582,9 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask,
/* Generate an interrupt by having the core call through to
* tpm_tis_send
*/
- if (chip->flags & TPM_CHIP_FLAG_TPM2)
- tpm2_gen_interrupt(chip);
- else
- tpm_gen_interrupt(chip);
+ rc = tpm_tis_gen_interrupt(chip);
+ if (rc < 0)
+ return rc;
/* tpm_tis_send will either confirm the interrupt is working or it
* will call disable_irq which undoes all of the above.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 00:28:52 +0000