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-rw-r--r--drivers/char/tpm/Kconfig11
-rw-r--r--drivers/char/tpm/Makefile1
-rw-r--r--drivers/char/tpm/tpm.c786
-rw-r--r--drivers/char/tpm/tpm.h37
-rw-r--r--drivers/char/tpm/tpm_atmel.c58
-rw-r--r--drivers/char/tpm/tpm_atmel.h25
-rw-r--r--drivers/char/tpm/tpm_bios.c52
-rw-r--r--drivers/char/tpm/tpm_infineon.c61
-rw-r--r--drivers/char/tpm/tpm_nsc.c49
-rw-r--r--drivers/char/tpm/tpm_tis.c669
10 files changed, 1528 insertions, 221 deletions
diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index a6873bf89ffa..1efde3b27619 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -20,9 +20,18 @@ config TCG_TPM
Note: For more TPM drivers enable CONFIG_PNP, CONFIG_ACPI
and CONFIG_PNPACPI.
+config TCG_TIS
+ tristate "TPM Interface Specification 1.2 Interface"
+ depends on TCG_TPM
+ ---help---
+ If you have a TPM security chip that is compliant with the
+ TCG TIS 1.2 TPM specification say Yes and it will be accessible
+ from within Linux. To compile this driver as a module, choose
+ M here; the module will be called tpm_tis.
+
config TCG_NSC
tristate "National Semiconductor TPM Interface"
- depends on TCG_TPM
+ depends on TCG_TPM && PNPACPI
---help---
If you have a TPM security chip from National Semicondutor
say Yes and it will be accessible from within Linux. To
diff --git a/drivers/char/tpm/Makefile b/drivers/char/tpm/Makefile
index ba4582d160fd..ea3a1e02a824 100644
--- a/drivers/char/tpm/Makefile
+++ b/drivers/char/tpm/Makefile
@@ -5,6 +5,7 @@ obj-$(CONFIG_TCG_TPM) += tpm.o
ifdef CONFIG_ACPI
obj-$(CONFIG_TCG_TPM) += tpm_bios.o
endif
+obj-$(CONFIG_TCG_TIS) += tpm_tis.o
obj-$(CONFIG_TCG_NSC) += tpm_nsc.o
obj-$(CONFIG_TCG_ATMEL) += tpm_atmel.o
obj-$(CONFIG_TCG_INFINEON) += tpm_infineon.o
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 5a3870477ef1..6889e7db3aff 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -32,12 +32,291 @@ enum tpm_const {
TPM_MINOR = 224, /* officially assigned */
TPM_BUFSIZE = 2048,
TPM_NUM_DEVICES = 256,
- TPM_NUM_MASK_ENTRIES = TPM_NUM_DEVICES / (8 * sizeof(int))
};
+enum tpm_duration {
+ TPM_SHORT = 0,
+ TPM_MEDIUM = 1,
+ TPM_LONG = 2,
+ TPM_UNDEFINED,
+};
+
+#define TPM_MAX_ORDINAL 243
+#define TPM_MAX_PROTECTED_ORDINAL 12
+#define TPM_PROTECTED_ORDINAL_MASK 0xFF
+
static LIST_HEAD(tpm_chip_list);
static DEFINE_SPINLOCK(driver_lock);
-static int dev_mask[TPM_NUM_MASK_ENTRIES];
+static DECLARE_BITMAP(dev_mask, TPM_NUM_DEVICES);
+
+/*
+ * Array with one entry per ordinal defining the maximum amount
+ * of time the chip could take to return the result. The ordinal
+ * designation of short, medium or long is defined in a table in
+ * TCG Specification TPM Main Part 2 TPM Structures Section 17. The
+ * values of the SHORT, MEDIUM, and LONG durations are retrieved
+ * from the chip during initialization with a call to tpm_get_timeouts.
+ */
+static const u8 tpm_protected_ordinal_duration[TPM_MAX_PROTECTED_ORDINAL] = {
+ TPM_UNDEFINED, /* 0 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 5 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 10 */
+ TPM_SHORT,
+};
+
+static const u8 tpm_ordinal_duration[TPM_MAX_ORDINAL] = {
+ TPM_UNDEFINED, /* 0 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 5 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 10 */
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_LONG,
+ TPM_LONG,
+ TPM_MEDIUM, /* 15 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_LONG,
+ TPM_SHORT, /* 20 */
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_SHORT, /* 25 */
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_MEDIUM, /* 30 */
+ TPM_LONG,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT, /* 35 */
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_MEDIUM, /* 40 */
+ TPM_LONG,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT, /* 45 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_LONG,
+ TPM_MEDIUM, /* 50 */
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 55 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_MEDIUM, /* 60 */
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_MEDIUM, /* 65 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 70 */
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 75 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_LONG, /* 80 */
+ TPM_UNDEFINED,
+ TPM_MEDIUM,
+ TPM_LONG,
+ TPM_SHORT,
+ TPM_UNDEFINED, /* 85 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 90 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED, /* 95 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_MEDIUM, /* 100 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 105 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 110 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT, /* 115 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_LONG, /* 120 */
+ TPM_LONG,
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_SHORT,
+ TPM_SHORT, /* 125 */
+ TPM_SHORT,
+ TPM_LONG,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT, /* 130 */
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_UNDEFINED, /* 135 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 140 */
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 145 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 150 */
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED, /* 155 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 160 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 165 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_LONG, /* 170 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 175 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_MEDIUM, /* 180 */
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_MEDIUM, /* 185 */
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 190 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 195 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 200 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT,
+ TPM_SHORT, /* 205 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_MEDIUM, /* 210 */
+ TPM_UNDEFINED,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_UNDEFINED, /* 215 */
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT,
+ TPM_SHORT, /* 220 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED, /* 225 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 230 */
+ TPM_LONG,
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 235 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 240 */
+ TPM_UNDEFINED,
+ TPM_MEDIUM,
+};
static void user_reader_timeout(unsigned long ptr)
{
@@ -46,7 +325,7 @@ static void user_reader_timeout(unsigned long ptr)
schedule_work(&chip->work);
}
-static void timeout_work(void * ptr)
+static void timeout_work(void *ptr)
{
struct tpm_chip *chip = ptr;
@@ -57,17 +336,43 @@ static void timeout_work(void * ptr)
}
/*
+ * Returns max number of jiffies to wait
+ */
+unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip,
+ u32 ordinal)
+{
+ int duration_idx = TPM_UNDEFINED;
+ int duration = 0;
+
+ if (ordinal < TPM_MAX_ORDINAL)
+ duration_idx = tpm_ordinal_duration[ordinal];
+ else if ((ordinal & TPM_PROTECTED_ORDINAL_MASK) <
+ TPM_MAX_PROTECTED_ORDINAL)
+ duration_idx =
+ tpm_protected_ordinal_duration[ordinal &
+ TPM_PROTECTED_ORDINAL_MASK];
+
+ if (duration_idx != TPM_UNDEFINED)
+ duration = chip->vendor.duration[duration_idx];
+ if (duration <= 0)
+ return 2 * 60 * HZ;
+ else
+ return duration;
+}
+EXPORT_SYMBOL_GPL(tpm_calc_ordinal_duration);
+
+/*
* Internal kernel interface to transmit TPM commands
*/
static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
size_t bufsiz)
{
ssize_t rc;
- u32 count;
+ u32 count, ordinal;
unsigned long stop;
count = be32_to_cpu(*((__be32 *) (buf + 2)));
-
+ ordinal = be32_to_cpu(*((__be32 *) (buf + 6)));
if (count == 0)
return -ENODATA;
if (count > bufsiz) {
@@ -78,21 +383,23 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
down(&chip->tpm_mutex);
- if ((rc = chip->vendor->send(chip, (u8 *) buf, count)) < 0) {
+ if ((rc = chip->vendor.send(chip, (u8 *) buf, count)) < 0) {
dev_err(chip->dev,
"tpm_transmit: tpm_send: error %zd\n", rc);
goto out;
}
- stop = jiffies + 2 * 60 * HZ;
+ if (chip->vendor.irq)
+ goto out_recv;
+
+ stop = jiffies + tpm_calc_ordinal_duration(chip, ordinal);
do {
- u8 status = chip->vendor->status(chip);
- if ((status & chip->vendor->req_complete_mask) ==
- chip->vendor->req_complete_val) {
+ u8 status = chip->vendor.status(chip);
+ if ((status & chip->vendor.req_complete_mask) ==
+ chip->vendor.req_complete_val)
goto out_recv;
- }
- if ((status == chip->vendor->req_canceled)) {
+ if ((status == chip->vendor.req_canceled)) {
dev_err(chip->dev, "Operation Canceled\n");
rc = -ECANCELED;
goto out;
@@ -102,14 +409,13 @@ static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
rmb();
} while (time_before(jiffies, stop));
-
- chip->vendor->cancel(chip);
+ chip->vendor.cancel(chip);
dev_err(chip->dev, "Operation Timed out\n");
rc = -ETIME;
goto out;
out_recv:
- rc = chip->vendor->recv(chip, (u8 *) buf, bufsiz);
+ rc = chip->vendor.recv(chip, (u8 *) buf, bufsiz);
if (rc < 0)
dev_err(chip->dev,
"tpm_transmit: tpm_recv: error %zd\n", rc);
@@ -119,17 +425,247 @@ out:
}
#define TPM_DIGEST_SIZE 20
-#define CAP_PCR_RESULT_SIZE 18
-static const u8 cap_pcr[] = {
+#define TPM_ERROR_SIZE 10
+#define TPM_RET_CODE_IDX 6
+#define TPM_GET_CAP_RET_SIZE_IDX 10
+#define TPM_GET_CAP_RET_UINT32_1_IDX 14
+#define TPM_GET_CAP_RET_UINT32_2_IDX 18
+#define TPM_GET_CAP_RET_UINT32_3_IDX 22
+#define TPM_GET_CAP_RET_UINT32_4_IDX 26
+#define TPM_GET_CAP_PERM_DISABLE_IDX 16
+#define TPM_GET_CAP_PERM_INACTIVE_IDX 18
+#define TPM_GET_CAP_RET_BOOL_1_IDX 14
+#define TPM_GET_CAP_TEMP_INACTIVE_IDX 16
+
+#define TPM_CAP_IDX 13
+#define TPM_CAP_SUBCAP_IDX 21
+
+enum tpm_capabilities {
+ TPM_CAP_FLAG = 4,
+ TPM_CAP_PROP = 5,
+};
+
+enum tpm_sub_capabilities {
+ TPM_CAP_PROP_PCR = 0x1,
+ TPM_CAP_PROP_MANUFACTURER = 0x3,
+ TPM_CAP_FLAG_PERM = 0x8,
+ TPM_CAP_FLAG_VOL = 0x9,
+ TPM_CAP_PROP_OWNER = 0x11,
+ TPM_CAP_PROP_TIS_TIMEOUT = 0x15,
+ TPM_CAP_PROP_TIS_DURATION = 0x20,
+};
+
+/*
+ * This is a semi generic GetCapability command for use
+ * with the capability type TPM_CAP_PROP or TPM_CAP_FLAG
+ * and their associated sub_capabilities.
+ */
+
+static const u8 tpm_cap[] = {
0, 193, /* TPM_TAG_RQU_COMMAND */
0, 0, 0, 22, /* length */
0, 0, 0, 101, /* TPM_ORD_GetCapability */
- 0, 0, 0, 5,
- 0, 0, 0, 4,
- 0, 0, 1, 1
+ 0, 0, 0, 0, /* TPM_CAP_<TYPE> */
+ 0, 0, 0, 4, /* TPM_CAP_SUB_<TYPE> size */
+ 0, 0, 1, 0 /* TPM_CAP_SUB_<TYPE> */
};
-#define READ_PCR_RESULT_SIZE 30
+static ssize_t transmit_cmd(struct tpm_chip *chip, u8 *data, int len,
+ char *desc)
+{
+ int err;
+
+ len = tpm_transmit(chip, data, len);
+ if (len < 0)
+ return len;
+ if (len == TPM_ERROR_SIZE) {
+ err = be32_to_cpu(*((__be32 *) (data + TPM_RET_CODE_IDX)));
+ dev_dbg(chip->dev, "A TPM error (%d) occurred %s\n", err, desc);
+ return err;
+ }
+ return 0;
+}
+
+void tpm_gen_interrupt(struct tpm_chip *chip)
+{
+ u8 data[max_t(int, ARRAY_SIZE(tpm_cap), 30)];
+ ssize_t rc;
+
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_PROP;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_TIS_TIMEOUT;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the timeouts");
+}
+EXPORT_SYMBOL_GPL(tpm_gen_interrupt);
+
+void tpm_get_timeouts(struct tpm_chip *chip)
+{
+ u8 data[max_t(int, ARRAY_SIZE(tpm_cap), 30)];
+ ssize_t rc;
+ u32 timeout;
+
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_PROP;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_TIS_TIMEOUT;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the timeouts");
+ if (rc)
+ goto duration;
+
+ if (be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_SIZE_IDX)))
+ != 4 * sizeof(u32))
+ goto duration;
+
+ /* Don't overwrite default if value is 0 */
+ timeout =
+ be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_1_IDX)));
+ if (timeout)
+ chip->vendor.timeout_a = msecs_to_jiffies(timeout);
+ timeout =
+ be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_2_IDX)));
+ if (timeout)
+ chip->vendor.timeout_b = msecs_to_jiffies(timeout);
+ timeout =
+ be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_3_IDX)));
+ if (timeout)
+ chip->vendor.timeout_c = msecs_to_jiffies(timeout);
+ timeout =
+ be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_4_IDX)));
+ if (timeout)
+ chip->vendor.timeout_d = msecs_to_jiffies(timeout);
+
+duration:
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_PROP;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_TIS_DURATION;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the durations");
+ if (rc)
+ return;
+
+ if (be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_SIZE_IDX)))
+ != 3 * sizeof(u32))
+ return;
+
+ chip->vendor.duration[TPM_SHORT] =
+ msecs_to_jiffies(be32_to_cpu
+ (*((__be32 *) (data +
+ TPM_GET_CAP_RET_UINT32_1_IDX))));
+ chip->vendor.duration[TPM_MEDIUM] =
+ msecs_to_jiffies(be32_to_cpu
+ (*((__be32 *) (data +
+ TPM_GET_CAP_RET_UINT32_2_IDX))));
+ chip->vendor.duration[TPM_LONG] =
+ msecs_to_jiffies(be32_to_cpu
+ (*((__be32 *) (data +
+ TPM_GET_CAP_RET_UINT32_3_IDX))));
+}
+EXPORT_SYMBOL_GPL(tpm_get_timeouts);
+
+void tpm_continue_selftest(struct tpm_chip *chip)
+{
+ u8 data[] = {
+ 0, 193, /* TPM_TAG_RQU_COMMAND */
+ 0, 0, 0, 10, /* length */
+ 0, 0, 0, 83, /* TPM_ORD_GetCapability */
+ };
+
+ tpm_transmit(chip, data, sizeof(data));
+}
+EXPORT_SYMBOL_GPL(tpm_continue_selftest);
+
+ssize_t tpm_show_enabled(struct device * dev, struct device_attribute * attr,
+ char *buf)
+{
+ u8 data[max_t(int, ARRAY_SIZE(tpm_cap), 35)];
+ ssize_t rc;
+
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_FLAG;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_FLAG_PERM;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attemtping to determine the permanent state");
+ if (rc)
+ return 0;
+ return sprintf(buf, "%d\n", !data[TPM_GET_CAP_PERM_DISABLE_IDX]);
+}
+EXPORT_SYMBOL_GPL(tpm_show_enabled);
+
+ssize_t tpm_show_active(struct device * dev, struct device_attribute * attr,
+ char *buf)
+{
+ u8 data[max_t(int, ARRAY_SIZE(tpm_cap), 35)];
+ ssize_t rc;
+
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_FLAG;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_FLAG_PERM;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attemtping to determine the permanent state");
+ if (rc)
+ return 0;
+ return sprintf(buf, "%d\n", !data[TPM_GET_CAP_PERM_INACTIVE_IDX]);
+}
+EXPORT_SYMBOL_GPL(tpm_show_active);
+
+ssize_t tpm_show_owned(struct device * dev, struct device_attribute * attr,
+ char *buf)
+{
+ u8 data[sizeof(tpm_cap)];
+ ssize_t rc;
+
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_PROP;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_OWNER;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the owner state");
+ if (rc)
+ return 0;
+ return sprintf(buf, "%d\n", data[TPM_GET_CAP_RET_BOOL_1_IDX]);
+}
+EXPORT_SYMBOL_GPL(tpm_show_owned);
+
+ssize_t tpm_show_temp_deactivated(struct device * dev,
+ struct device_attribute * attr, char *buf)
+{
+ u8 data[sizeof(tpm_cap)];
+ ssize_t rc;
+
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_FLAG;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_FLAG_VOL;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the temporary state");
+ if (rc)
+ return 0;
+ return sprintf(buf, "%d\n", data[TPM_GET_CAP_TEMP_INACTIVE_IDX]);
+}
+EXPORT_SYMBOL_GPL(tpm_show_temp_deactivated);
+
static const u8 pcrread[] = {
0, 193, /* TPM_TAG_RQU_COMMAND */
0, 0, 0, 14, /* length */
@@ -140,8 +676,8 @@ static const u8 pcrread[] = {
ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr,
char *buf)
{
- u8 data[READ_PCR_RESULT_SIZE];
- ssize_t len;
+ u8 data[max_t(int, max(ARRAY_SIZE(tpm_cap), ARRAY_SIZE(pcrread)), 30)];
+ ssize_t rc;
int i, j, num_pcrs;
__be32 index;
char *str = buf;
@@ -150,29 +686,24 @@ ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr,
if (chip == NULL)
return -ENODEV;
- memcpy(data, cap_pcr, sizeof(cap_pcr));
- if ((len = tpm_transmit(chip, data, sizeof(data)))
- < CAP_PCR_RESULT_SIZE) {
- dev_dbg(chip->dev, "A TPM error (%d) occurred "
- "attempting to determine the number of PCRS\n",
- be32_to_cpu(*((__be32 *) (data + 6))));
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_PROP;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_PCR;
+
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the number of PCRS");
+ if (rc)
return 0;
- }
num_pcrs = be32_to_cpu(*((__be32 *) (data + 14)));
-
for (i = 0; i < num_pcrs; i++) {
memcpy(data, pcrread, sizeof(pcrread));
index = cpu_to_be32(i);
memcpy(data + 10, &index, 4);
- if ((len = tpm_transmit(chip, data, sizeof(data)))
- < READ_PCR_RESULT_SIZE){
- dev_dbg(chip->dev, "A TPM error (%d) occurred"
- " attempting to read PCR %d of %d\n",
- be32_to_cpu(*((__be32 *) (data + 6))),
- i, num_pcrs);
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to read a PCR");
+ if (rc)
goto out;
- }
str += sprintf(str, "PCR-%02d: ", i);
for (j = 0; j < TPM_DIGEST_SIZE; j++)
str += sprintf(str, "%02X ", *(data + 10 + j));
@@ -194,7 +725,7 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr,
char *buf)
{
u8 *data;
- ssize_t len;
+ ssize_t err;
int i, rc;
char *str = buf;
@@ -208,14 +739,10 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr,
memcpy(data, readpubek, sizeof(readpubek));
- if ((len = tpm_transmit(chip, data, READ_PUBEK_RESULT_SIZE)) <
- READ_PUBEK_RESULT_SIZE) {
- dev_dbg(chip->dev, "A TPM error (%d) occurred "
- "attempting to read the PUBEK\n",
- be32_to_cpu(*((__be32 *) (data + 6))));
- rc = 0;
+ err = transmit_cmd(chip, data, READ_PUBEK_RESULT_SIZE,
+ "attempting to read the PUBEK");
+ if (err)
goto out;
- }
/*
ignore header 10 bytes
@@ -245,67 +772,110 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr,
if ((i + 1) % 16 == 0)
str += sprintf(str, "\n");
}
- rc = str - buf;
out:
+ rc = str - buf;
kfree(data);
return rc;
}
EXPORT_SYMBOL_GPL(tpm_show_pubek);
-#define CAP_VER_RESULT_SIZE 18
+#define CAP_VERSION_1_1 6
+#define CAP_VERSION_1_2 0x1A
+#define CAP_VERSION_IDX 13
static const u8 cap_version[] = {
0, 193, /* TPM_TAG_RQU_COMMAND */
0, 0, 0, 18, /* length */
0, 0, 0, 101, /* TPM_ORD_GetCapability */
- 0, 0, 0, 6,
+ 0, 0, 0, 0,
0, 0, 0, 0
};
-#define CAP_MANUFACTURER_RESULT_SIZE 18
-static const u8 cap_manufacturer[] = {
- 0, 193, /* TPM_TAG_RQU_COMMAND */
- 0, 0, 0, 22, /* length */
- 0, 0, 0, 101, /* TPM_ORD_GetCapability */
- 0, 0, 0, 5,
- 0, 0, 0, 4,
- 0, 0, 1, 3
-};
-
ssize_t tpm_show_caps(struct device *dev, struct device_attribute *attr,
char *buf)
{
- u8 data[sizeof(cap_manufacturer)];
- ssize_t len;
+ u8 data[max_t(int, max(ARRAY_SIZE(tpm_cap), ARRAY_SIZE(cap_version)), 30)];
+ ssize_t rc;
char *str = buf;
struct tpm_chip *chip = dev_get_drvdata(dev);
if (chip == NULL)
return -ENODEV;
- memcpy(data, cap_manufacturer, sizeof(cap_manufacturer));
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_PROP;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_MANUFACTURER;
- if ((len = tpm_transmit(chip, data, sizeof(data))) <
- CAP_MANUFACTURER_RESULT_SIZE)
- return len;
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the manufacturer");
+ if (rc)
+ return 0;
str += sprintf(str, "Manufacturer: 0x%x\n",
- be32_to_cpu(*((__be32 *) (data + 14))));
+ be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_1_IDX))));
memcpy(data, cap_version, sizeof(cap_version));
+ data[CAP_VERSION_IDX] = CAP_VERSION_1_1;
+ rc = transmit_cmd(chip, data, sizeof(data),
+ "attempting to determine the 1.1 version");
+ if (rc)
+ goto out;
- if ((len = tpm_transmit(chip, data, sizeof(data))) <
- CAP_VER_RESULT_SIZE)
- return len;
-
- str +=
- sprintf(str, "TCG version: %d.%d\nFirmware version: %d.%d\n",
- (int) data[14], (int) data[15], (int) data[16],
- (int) data[17]);
+ str += sprintf(str,
+ "TCG version: %d.%d\nFirmware version: %d.%d\n",
+ (int) data[14], (int) data[15], (int) data[16],
+ (int) data[17]);
+out:
return str - buf;
}
EXPORT_SYMBOL_GPL(tpm_show_caps);
+ssize_t tpm_show_caps_1_2(struct device * dev,
+ struct device_attribute * attr, char *buf)
+{
+ u8 data[max_t(int, max(ARRAY_SIZE(tpm_cap), ARRAY_SIZE(cap_version)), 30)];
+ ssize_t len;
+ char *str = buf;
+
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+ if (chip == NULL)
+ return -ENODEV;
+
+ memcpy(data, tpm_cap, sizeof(tpm_cap));
+ data[TPM_CAP_IDX] = TPM_CAP_PROP;
+ data[TPM_CAP_SUBCAP_IDX] = TPM_CAP_PROP_MANUFACTURER;
+
+ if ((len = tpm_transmit(chip, data, sizeof(data))) <=
+ TPM_ERROR_SIZE) {
+ dev_dbg(chip->dev, "A TPM error (%d) occurred "
+ "attempting to determine the manufacturer\n",
+ be32_to_cpu(*((__be32 *) (data + TPM_RET_CODE_IDX))));
+ return 0;
+ }
+
+ str += sprintf(str, "Manufacturer: 0x%x\n",
+ be32_to_cpu(*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_1_IDX))));
+
+ memcpy(data, cap_version, sizeof(cap_version));
+ data[CAP_VERSION_IDX] = CAP_VERSION_1_2;
+
+ if ((len = tpm_transmit(chip, data, sizeof(data))) <=
+ TPM_ERROR_SIZE) {
+ dev_err(chip->dev, "A TPM error (%d) occurred "
+ "attempting to determine the 1.2 version\n",
+ be32_to_cpu(*((__be32 *) (data + TPM_RET_CODE_IDX))));
+ goto out;
+ }
+ str += sprintf(str,
+ "TCG version: %d.%d\nFirmware version: %d.%d\n",
+ (int) data[16], (int) data[17], (int) data[18],
+ (int) data[19]);
+
+out:
+ return str - buf;
+}
+EXPORT_SYMBOL_GPL(tpm_show_caps_1_2);
+
ssize_t tpm_store_cancel(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
@@ -313,7 +883,7 @@ ssize_t tpm_store_cancel(struct device *dev, struct device_attribute *attr,
if (chip == NULL)
return 0;
- chip->vendor->cancel(chip);
+ chip->vendor.cancel(chip);
return count;
}
EXPORT_SYMBOL_GPL(tpm_store_cancel);
@@ -329,7 +899,7 @@ int tpm_open(struct inode *inode, struct file *file)
spin_lock(&driver_lock);
list_for_each_entry(pos, &tpm_chip_list, list) {
- if (pos->vendor->miscdev.minor == minor) {
+ if (pos->vendor.miscdev.minor == minor) {
chip = pos;
break;
}
@@ -387,7 +957,7 @@ int tpm_release(struct inode *inode, struct file *file)
EXPORT_SYMBOL_GPL(tpm_release);
ssize_t tpm_write(struct file *file, const char __user *buf,
- size_t size, loff_t * off)
+ size_t size, loff_t *off)
{
struct tpm_chip *chip = file->private_data;
int in_size = size, out_size;
@@ -419,11 +989,10 @@ ssize_t tpm_write(struct file *file, const char __user *buf,
return in_size;
}
-
EXPORT_SYMBOL_GPL(tpm_write);
-ssize_t tpm_read(struct file * file, char __user *buf,
- size_t size, loff_t * off)
+ssize_t tpm_read(struct file *file, char __user *buf,
+ size_t size, loff_t *off)
{
struct tpm_chip *chip = file->private_data;
int ret_size;
@@ -462,14 +1031,13 @@ void tpm_remove_hardware(struct device *dev)
spin_unlock(&driver_lock);
dev_set_drvdata(dev, NULL);
- misc_deregister(&chip->vendor->miscdev);
- kfree(chip->vendor->miscdev.name);
+ misc_deregister(&chip->vendor.miscdev);
+ kfree(chip->vendor.miscdev.name);
- sysfs_remove_group(&dev->kobj, chip->vendor->attr_group);
+ sysfs_remove_group(&dev->kobj, chip->vendor.attr_group);
tpm_bios_log_teardown(chip->bios_dir);
- dev_mask[chip->dev_num / TPM_NUM_MASK_ENTRIES ] &=
- ~(1 << (chip->dev_num % TPM_NUM_MASK_ENTRIES));
+ clear_bit(chip->dev_num, dev_mask);
kfree(chip);
@@ -520,18 +1088,18 @@ EXPORT_SYMBOL_GPL(tpm_pm_resume);
* upon errant exit from this function specific probe function should call
* pci_disable_device
*/
-int tpm_register_hardware(struct device *dev, struct tpm_vendor_specific *entry)
+struct tpm_chip *tpm_register_hardware(struct device *dev, const struct tpm_vendor_specific
+ *entry)
{
#define DEVNAME_SIZE 7
char *devname;
struct tpm_chip *chip;
- int i, j;
/* Driver specific per-device data */
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL)
- return -ENOMEM;
+ return NULL;
init_MUTEX(&chip->buffer_mutex);
init_MUTEX(&chip->tpm_mutex);
@@ -543,45 +1111,37 @@ int tpm_register_hardware(struct device *dev, struct tpm_vendor_specific *entry)
chip->user_read_timer.function = user_reader_timeout;
chip->user_read_timer.data = (unsigned long) chip;
- chip->vendor = entry;
-
- chip->dev_num = -1;
+ memcpy(&chip->vendor, entry, sizeof(struct tpm_vendor_specific));
- for (i = 0; i < TPM_NUM_MASK_ENTRIES; i++)
- for (j = 0; j < 8 * sizeof(int); j++)
- if ((dev_mask[i] & (1 << j)) == 0) {
- chip->dev_num =
- i * TPM_NUM_MASK_ENTRIES + j;
- dev_mask[i] |= 1 << j;
- goto dev_num_search_complete;
- }
+ chip->dev_num = find_first_zero_bit(dev_mask, TPM_NUM_DEVICES);
-dev_num_search_complete:
- if (chip->dev_num < 0) {
+ if (chip->dev_num >= TPM_NUM_DEVICES) {
dev_err(dev, "No available tpm device numbers\n");
kfree(chip);
- return -ENODEV;
+ return NULL;
} else if (chip->dev_num == 0)
- chip->vendor->miscdev.minor = TPM_MINOR;
+ chip->vendor.miscdev.minor = TPM_MINOR;
else
- chip->vendor->miscdev.minor = MISC_DYNAMIC_MINOR;
+ chip->vendor.miscdev.minor = MISC_DYNAMIC_MINOR;
+
+ set_bit(chip->dev_num, dev_mask);
devname = kmalloc(DEVNAME_SIZE, GFP_KERNEL);
scnprintf(devname, DEVNAME_SIZE, "%s%d", "tpm", chip->dev_num);
- chip->vendor->miscdev.name = devname;
+ chip->vendor.miscdev.name = devname;
- chip->vendor->miscdev.dev = dev;
+ chip->vendor.miscdev.dev = dev;
chip->dev = get_device(dev);
- if (misc_register(&chip->vendor->miscdev)) {
+ if (misc_register(&chip->vendor.miscdev)) {
dev_err(chip->dev,
"unable to misc_register %s, minor %d\n",
- chip->vendor->miscdev.name,
- chip->vendor->miscdev.minor);
+ chip->vendor.miscdev.name,
+ chip->vendor.miscdev.minor);
put_device(dev);
+ clear_bit(chip->dev_num, dev_mask);
kfree(chip);
- dev_mask[i] &= !(1 << j);
- return -ENODEV;
+ return NULL;
}
spin_lock(&driver_lock);
@@ -592,11 +1152,11 @@ dev_num_search_complete:
spin_unlock(&driver_lock);
- sysfs_create_group(&dev->kobj, chip->vendor->attr_group);
+ sysfs_create_group(&dev->kobj, chip->vendor.attr_group);
chip->bios_dir = tpm_bios_log_setup(devname);
- return 0;
+ return chip;
}
EXPORT_SYMBOL_GPL(tpm_register_hardware);
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index dec0224b4478..54a4c804e25f 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -42,18 +42,30 @@ extern ssize_t tpm_show_pcrs(struct device *, struct device_attribute *attr,
char *);
extern ssize_t tpm_show_caps(struct device *, struct device_attribute *attr,
char *);
+extern ssize_t tpm_show_caps_1_2(struct device *, struct device_attribute *attr,
+ char *);
extern ssize_t tpm_store_cancel(struct device *, struct device_attribute *attr,
const char *, size_t);
+extern ssize_t tpm_show_enabled(struct device *, struct device_attribute *attr,
+ char *);
+extern ssize_t tpm_show_active(struct device *, struct device_attribute *attr,
+ char *);
+extern ssize_t tpm_show_owned(struct device *, struct device_attribute *attr,
+ char *);
+extern ssize_t tpm_show_temp_deactivated(struct device *,
+ struct device_attribute *attr, char *);
struct tpm_chip;
struct tpm_vendor_specific {
- u8 req_complete_mask;
- u8 req_complete_val;
- u8 req_canceled;
+ const u8 req_complete_mask;
+ const u8 req_complete_val;
+ const u8 req_canceled;
void __iomem *iobase; /* ioremapped address */
unsigned long base; /* TPM base address */
+ int irq;
+
int region_size;
int have_region;
@@ -63,6 +75,13 @@ struct tpm_vendor_specific {
u8 (*status) (struct tpm_chip *);
struct miscdevice miscdev;
struct attribute_group *attr_group;
+ struct list_head list;
+ int locality;
+ unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */
+ unsigned long duration[3]; /* jiffies */
+
+ wait_queue_head_t read_queue;
+ wait_queue_head_t int_queue;
};
struct tpm_chip {
@@ -81,13 +100,15 @@ struct tpm_chip {
struct work_struct work;
struct semaphore tpm_mutex; /* tpm is processing */
- struct tpm_vendor_specific *vendor;
+ struct tpm_vendor_specific vendor;
struct dentry **bios_dir;
struct list_head list;
};
+#define to_tpm_chip(n) container_of(n, struct tpm_chip, vendor)
+
static inline int tpm_read_index(int base, int index)
{
outb(index, base);
@@ -100,8 +121,12 @@ static inline void tpm_write_index(int base, int index, int value)
outb(value & 0xFF, base+1);
}
-extern int tpm_register_hardware(struct device *,
- struct tpm_vendor_specific *);
+extern void tpm_get_timeouts(struct tpm_chip *);
+extern void tpm_gen_interrupt(struct tpm_chip *);
+extern void tpm_continue_selftest(struct tpm_chip *);
+extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32);
+extern struct tpm_chip* tpm_register_hardware(struct device *,
+ const struct tpm_vendor_specific *);
extern int tpm_open(struct inode *, struct file *);
extern int tpm_release(struct inode *, struct file *);
extern ssize_t tpm_write(struct file *, const char __user *, size_t,
diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c
index ff3654964fe3..58a258cec153 100644
--- a/drivers/char/tpm/tpm_atmel.c
+++ b/drivers/char/tpm/tpm_atmel.c
@@ -47,12 +47,12 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
return -EIO;
for (i = 0; i < 6; i++) {
- status = ioread8(chip->vendor->iobase + 1);
+ status = ioread8(chip->vendor.iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
dev_err(chip->dev, "error reading header\n");
return -EIO;
}
- *buf++ = ioread8(chip->vendor->iobase);
+ *buf++ = ioread8(chip->vendor.iobase);
}
/* size of the data received */
@@ -63,7 +63,7 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
dev_err(chip->dev,
"Recv size(%d) less than available space\n", size);
for (; i < size; i++) { /* clear the waiting data anyway */
- status = ioread8(chip->vendor->iobase + 1);
+ status = ioread8(chip->vendor.iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
dev_err(chip->dev, "error reading data\n");
return -EIO;
@@ -74,16 +74,16 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
/* read all the data available */
for (; i < size; i++) {
- status = ioread8(chip->vendor->iobase + 1);
+ status = ioread8(chip->vendor.iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
dev_err(chip->dev, "error reading data\n");
return -EIO;
}
- *buf++ = ioread8(chip->vendor->iobase);
+ *buf++ = ioread8(chip->vendor.iobase);
}
/* make sure data available is gone */
- status = ioread8(chip->vendor->iobase + 1);
+ status = ioread8(chip->vendor.iobase + 1);
if (status & ATML_STATUS_DATA_AVAIL) {
dev_err(chip->dev, "data available is stuck\n");
@@ -100,7 +100,7 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
dev_dbg(chip->dev, "tpm_atml_send:\n");
for (i = 0; i < count; i++) {
dev_dbg(chip->dev, "%d 0x%x(%d)\n", i, buf[i], buf[i]);
- iowrite8(buf[i], chip->vendor->iobase);
+ iowrite8(buf[i], chip->vendor.iobase);
}
return count;
@@ -108,12 +108,12 @@ static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
static void tpm_atml_cancel(struct tpm_chip *chip)
{
- iowrite8(ATML_STATUS_ABORT, chip->vendor->iobase + 1);
+ iowrite8(ATML_STATUS_ABORT, chip->vendor.iobase + 1);
}
static u8 tpm_atml_status(struct tpm_chip *chip)
{
- return ioread8(chip->vendor->iobase + 1);
+ return ioread8(chip->vendor.iobase + 1);
}
static struct file_operations atmel_ops = {
@@ -140,7 +140,7 @@ static struct attribute* atmel_attrs[] = {
static struct attribute_group atmel_attr_grp = { .attrs = atmel_attrs };
-static struct tpm_vendor_specific tpm_atmel = {
+static const struct tpm_vendor_specific tpm_atmel = {
.recv = tpm_atml_recv,
.send = tpm_atml_send,
.cancel = tpm_atml_cancel,
@@ -159,10 +159,10 @@ static void atml_plat_remove(void)
struct tpm_chip *chip = dev_get_drvdata(&pdev->dev);
if (chip) {
- if (chip->vendor->have_region)
- atmel_release_region(chip->vendor->base,
- chip->vendor->region_size);
- atmel_put_base_addr(chip->vendor);
+ if (chip->vendor.have_region)
+ atmel_release_region(chip->vendor.base,
+ chip->vendor.region_size);
+ atmel_put_base_addr(chip->vendor.iobase);
tpm_remove_hardware(chip->dev);
platform_device_unregister(pdev);
}
@@ -179,18 +179,22 @@ static struct device_driver atml_drv = {
static int __init init_atmel(void)
{
int rc = 0;
+ void __iomem *iobase = NULL;
+ int have_region, region_size;
+ unsigned long base;
+ struct tpm_chip *chip;
driver_register(&atml_drv);
- if ((tpm_atmel.iobase = atmel_get_base_addr(&tpm_atmel)) == NULL) {
+ if ((iobase = atmel_get_base_addr(&base, &region_size)) == NULL) {
rc = -ENODEV;
goto err_unreg_drv;
}
- tpm_atmel.have_region =
+ have_region =
(atmel_request_region
- (tpm_atmel.base, tpm_atmel.region_size,
- "tpm_atmel0") == NULL) ? 0 : 1;
+ (tpm_atmel.base, region_size, "tpm_atmel0") == NULL) ? 0 : 1;
+
if (IS_ERR
(pdev =
@@ -199,17 +203,25 @@ static int __init init_atmel(void)
goto err_rel_reg;
}
- if ((rc = tpm_register_hardware(&pdev->dev, &tpm_atmel)) < 0)
+ if (!(chip = tpm_register_hardware(&pdev->dev, &tpm_atmel))) {
+ rc = -ENODEV;
goto err_unreg_dev;
+ }
+
+ chip->vendor.iobase = iobase;
+ chip->vendor.base = base;
+ chip->vendor.have_region = have_region;
+ chip->vendor.region_size = region_size;
+
return 0;
err_unreg_dev:
platform_device_unregister(pdev);
err_rel_reg:
- atmel_put_base_addr(&tpm_atmel);
- if (tpm_atmel.have_region)
- atmel_release_region(tpm_atmel.base,
- tpm_atmel.region_size);
+ atmel_put_base_addr(iobase);
+ if (have_region)
+ atmel_release_region(base,
+ region_size);
err_unreg_drv:
driver_unregister(&atml_drv);
return rc;
diff --git a/drivers/char/tpm/tpm_atmel.h b/drivers/char/tpm/tpm_atmel.h
index d3478aaadd77..2e68eeb8a2cd 100644
--- a/drivers/char/tpm/tpm_atmel.h
+++ b/drivers/char/tpm/tpm_atmel.h
@@ -28,13 +28,12 @@
#define atmel_request_region request_mem_region
#define atmel_release_region release_mem_region
-static inline void atmel_put_base_addr(struct tpm_vendor_specific
- *vendor)
+static inline void atmel_put_base_addr(void __iomem *iobase)
{
- iounmap(vendor->iobase);
+ iounmap(iobase);
}
-static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific *vendor)
+static void __iomem * atmel_get_base_addr(unsigned long *base, int *region_size)
{
struct device_node *dn;
unsigned long address, size;
@@ -71,9 +70,9 @@ static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific *vendor)
else
size = reg[naddrc];
- vendor->base = address;
- vendor->region_size = size;
- return ioremap(vendor->base, vendor->region_size);
+ *base = address;
+ *region_size = size;
+ return ioremap(*base, *region_size);
}
#else
#define atmel_getb(chip, offset) inb(chip->vendor->base + offset)
@@ -106,14 +105,12 @@ static int atmel_verify_tpm11(void)
return 0;
}
-static inline void atmel_put_base_addr(struct tpm_vendor_specific
- *vendor)
+static inline void atmel_put_base_addr(void __iomem *iobase)
{
}
/* Determine where to talk to device */
-static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific
- *vendor)
+static void __iomem * atmel_get_base_addr(unsigned long *base, int *region_size)
{
int lo, hi;
@@ -123,9 +120,9 @@ static void __iomem * atmel_get_base_addr(struct tpm_vendor_specific
lo = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_LO);
hi = tpm_read_index(TPM_ADDR, TPM_ATMEL_BASE_ADDR_HI);
- vendor->base = (hi << 8) | lo;
- vendor->region_size = 2;
+ *base = (hi << 8) | lo;
+ *region_size = 2;
- return ioport_map(vendor->base, vendor->region_size);
+ return ioport_map(*base, *region_size);
}
#endif
diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c
index 537aa45d8c67..e45f0d3d12de 100644
--- a/drivers/char/tpm/tpm_bios.c
+++ b/drivers/char/tpm/tpm_bios.c
@@ -29,6 +29,11 @@
#define MAX_TEXT_EVENT 1000 /* Max event string length */
#define ACPI_TCPA_SIG "TCPA" /* 0x41504354 /'TCPA' */
+enum bios_platform_class {
+ BIOS_CLIENT = 0x00,
+ BIOS_SERVER = 0x01,
+};
+
struct tpm_bios_log {
void *bios_event_log;
void *bios_event_log_end;
@@ -36,9 +41,18 @@ struct tpm_bios_log {
struct acpi_tcpa {
struct acpi_table_header hdr;
- u16 reserved;
- u32 log_max_len __attribute__ ((packed));
- u32 log_start_addr __attribute__ ((packed));
+ u16 platform_class;
+ union {
+ struct client_hdr {
+ u32 log_max_len __attribute__ ((packed));
+ u64 log_start_addr __attribute__ ((packed));
+ } client;
+ struct server_hdr {
+ u16 reserved;
+ u64 log_max_len __attribute__ ((packed));
+ u64 log_start_addr __attribute__ ((packed));
+ } server;
+ };
};
struct tcpa_event {
@@ -120,6 +134,7 @@ static const char* tcpa_pc_event_id_strings[] = {
"S-CRTM Version",
"S-CRTM Contents",
"S-CRTM POST Contents",
+ "POST Contents",
};
/* returns pointer to start of pos. entry of tcg log */
@@ -306,6 +321,7 @@ static int tpm_binary_bios_measurements_show(struct seq_file *m, void *v)
/* 5th: delimiter */
seq_putc(m, '\0');
+ kfree(eventname);
return 0;
}
@@ -353,6 +369,7 @@ static int tpm_ascii_bios_measurements_show(struct seq_file *m, void *v)
/* 4th: eventname <= max + \'0' delimiter */
seq_printf(m, " %s\n", eventname);
+ kfree(eventname);
return 0;
}
@@ -376,6 +393,7 @@ static int read_log(struct tpm_bios_log *log)
struct acpi_tcpa *buff;
acpi_status status;
struct acpi_table_header *virt;
+ u64 len, start;
if (log->bios_event_log != NULL) {
printk(KERN_ERR
@@ -396,27 +414,37 @@ static int read_log(struct tpm_bios_log *log)
return -EIO;
}
- if (buff->log_max_len == 0) {
+ switch(buff->platform_class) {
+ case BIOS_SERVER:
+ len = buff->server.log_max_len;
+ start = buff->server.log_start_addr;
+ break;
+ case BIOS_CLIENT:
+ default:
+ len = buff->client.log_max_len;
+ start = buff->client.log_start_addr;
+ break;
+ }
+ if (!len) {
printk(KERN_ERR "%s: ERROR - TCPA log area empty\n", __func__);
return -EIO;
}
/* malloc EventLog space */
- log->bios_event_log = kmalloc(buff->log_max_len, GFP_KERNEL);
+ log->bios_event_log = kmalloc(len, GFP_KERNEL);
if (!log->bios_event_log) {
- printk
- ("%s: ERROR - Not enough Memory for BIOS measurements\n",
- __func__);
+ printk("%s: ERROR - Not enough Memory for BIOS measurements\n",
+ __func__);
return -ENOMEM;
}
- log->bios_event_log_end = log->bios_event_log + buff->log_max_len;
+ log->bios_event_log_end = log->bios_event_log + len;
- acpi_os_map_memory(buff->log_start_addr, buff->log_max_len, (void *) &virt);
+ acpi_os_map_memory(start, len, (void *) &virt);
- memcpy(log->bios_event_log, virt, buff->log_max_len);
+ memcpy(log->bios_event_log, virt, len);
- acpi_os_unmap_memory(virt, buff->log_max_len);
+ acpi_os_unmap_memory(virt, len);
return 0;
}
diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c
index 24095f6ee6da..adfff21beb21 100644
--- a/drivers/char/tpm/tpm_infineon.c
+++ b/drivers/char/tpm/tpm_infineon.c
@@ -15,6 +15,7 @@
* License.
*/
+#include <linux/init.h>
#include <linux/pnp.h>
#include "tpm.h"
@@ -104,7 +105,7 @@ static int empty_fifo(struct tpm_chip *chip, int clear_wrfifo)
if (clear_wrfifo) {
for (i = 0; i < 4096; i++) {
- status = inb(chip->vendor->base + WRFIFO);
+ status = inb(chip->vendor.base + WRFIFO);
if (status == 0xff) {
if (check == 5)
break;
@@ -124,8 +125,8 @@ static int empty_fifo(struct tpm_chip *chip, int clear_wrfifo)
*/
i = 0;
do {
- status = inb(chip->vendor->base + RDFIFO);
- status = inb(chip->vendor->base + STAT);
+ status = inb(chip->vendor.base + RDFIFO);
+ status = inb(chip->vendor.base + STAT);
i++;
if (i == TPM_MAX_TRIES)
return -EIO;
@@ -138,7 +139,7 @@ static int wait(struct tpm_chip *chip, int wait_for_bit)
int status;
int i;
for (i = 0; i < TPM_MAX_TRIES; i++) {
- status = inb(chip->vendor->base + STAT);
+ status = inb(chip->vendor.base + STAT);
/* check the status-register if wait_for_bit is set */
if (status & 1 << wait_for_bit)
break;
@@ -157,7 +158,7 @@ static int wait(struct tpm_chip *chip, int wait_for_bit)
static void wait_and_send(struct tpm_chip *chip, u8 sendbyte)
{
wait(chip, STAT_XFE);
- outb(sendbyte, chip->vendor->base + WRFIFO);
+ outb(sendbyte, chip->vendor.base + WRFIFO);
}
/* Note: WTX means Waiting-Time-Extension. Whenever the TPM needs more
@@ -204,7 +205,7 @@ recv_begin:
ret = wait(chip, STAT_RDA);
if (ret)
return -EIO;
- buf[i] = inb(chip->vendor->base + RDFIFO);
+ buf[i] = inb(chip->vendor.base + RDFIFO);
}
if (buf[0] != TPM_VL_VER) {
@@ -219,7 +220,7 @@ recv_begin:
for (i = 0; i < size; i++) {
wait(chip, STAT_RDA);
- buf[i] = inb(chip->vendor->base + RDFIFO);
+ buf[i] = inb(chip->vendor.base + RDFIFO);
}
if ((size == 0x6D00) && (buf[1] == 0x80)) {
@@ -268,7 +269,7 @@ static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count)
u8 count_high, count_low, count_4, count_3, count_2, count_1;
/* Disabling Reset, LP and IRQC */
- outb(RESET_LP_IRQC_DISABLE, chip->vendor->base + CMD);
+ outb(RESET_LP_IRQC_DISABLE, chip->vendor.base + CMD);
ret = empty_fifo(chip, 1);
if (ret) {
@@ -319,7 +320,7 @@ static void tpm_inf_cancel(struct tpm_chip *chip)
static u8 tpm_inf_status(struct tpm_chip *chip)
{
- return inb(chip->vendor->base + STAT);
+ return inb(chip->vendor.base + STAT);
}
static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL);
@@ -346,7 +347,7 @@ static struct file_operations inf_ops = {
.release = tpm_release,
};
-static struct tpm_vendor_specific tpm_inf = {
+static const struct tpm_vendor_specific tpm_inf = {
.recv = tpm_inf_recv,
.send = tpm_inf_send,
.cancel = tpm_inf_cancel,
@@ -375,6 +376,7 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
int version[2];
int productid[2];
char chipname[20];
+ struct tpm_chip *chip;
/* read IO-ports through PnP */
if (pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) &&
@@ -395,14 +397,13 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
goto err_last;
}
/* publish my base address and request region */
- tpm_inf.base = TPM_INF_BASE;
if (request_region
- (tpm_inf.base, TPM_INF_PORT_LEN, "tpm_infineon0") == NULL) {
+ (TPM_INF_BASE, TPM_INF_PORT_LEN, "tpm_infineon0") == NULL) {
rc = -EINVAL;
goto err_last;
}
- if (request_region(TPM_INF_ADDR, TPM_INF_ADDR_LEN,
- "tpm_infineon0") == NULL) {
+ if (request_region
+ (TPM_INF_ADDR, TPM_INF_ADDR_LEN, "tpm_infineon0") == NULL) {
rc = -EINVAL;
goto err_last;
}
@@ -442,9 +443,9 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
/* configure TPM with IO-ports */
outb(IOLIMH, TPM_INF_ADDR);
- outb(((tpm_inf.base >> 8) & 0xff), TPM_INF_DATA);
+ outb(((TPM_INF_BASE >> 8) & 0xff), TPM_INF_DATA);
outb(IOLIML, TPM_INF_ADDR);
- outb((tpm_inf.base & 0xff), TPM_INF_DATA);
+ outb((TPM_INF_BASE & 0xff), TPM_INF_DATA);
/* control if IO-ports are set correctly */
outb(IOLIMH, TPM_INF_ADDR);
@@ -452,10 +453,10 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
outb(IOLIML, TPM_INF_ADDR);
iol = inb(TPM_INF_DATA);
- if ((ioh << 8 | iol) != tpm_inf.base) {
+ if ((ioh << 8 | iol) != TPM_INF_BASE) {
dev_err(&dev->dev,
- "Could not set IO-ports to 0x%lx\n",
- tpm_inf.base);
+ "Could not set IO-ports to 0x%x\n",
+ TPM_INF_BASE);
rc = -EIO;
goto err_release_region;
}
@@ -466,15 +467,15 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
outb(DISABLE_REGISTER_PAIR, TPM_INF_ADDR);
/* disable RESET, LP and IRQC */
- outb(RESET_LP_IRQC_DISABLE, tpm_inf.base + CMD);
+ outb(RESET_LP_IRQC_DISABLE, TPM_INF_BASE + CMD);
/* Finally, we're done, print some infos */
dev_info(&dev->dev, "TPM found: "
"config base 0x%x, "
"io base 0x%x, "
- "chip version %02x%02x, "
- "vendor id %x%x (Infineon), "
- "product id %02x%02x"
+ "chip version 0x%02x%02x, "
+ "vendor id 0x%x%x (Infineon), "
+ "product id 0x%02x%02x"
"%s\n",
TPM_INF_ADDR,
TPM_INF_BASE,
@@ -482,11 +483,10 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
vendorid[0], vendorid[1],
productid[0], productid[1], chipname);
- rc = tpm_register_hardware(&dev->dev, &tpm_inf);
- if (rc < 0) {
- rc = -ENODEV;
+ if (!(chip = tpm_register_hardware(&dev->dev, &tpm_inf))) {
goto err_release_region;
}
+ chip->vendor.base = TPM_INF_BASE;
return 0;
} else {
rc = -ENODEV;
@@ -494,7 +494,7 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
}
err_release_region:
- release_region(tpm_inf.base, TPM_INF_PORT_LEN);
+ release_region(TPM_INF_BASE, TPM_INF_PORT_LEN);
release_region(TPM_INF_ADDR, TPM_INF_ADDR_LEN);
err_last:
@@ -506,7 +506,8 @@ static __devexit void tpm_inf_pnp_remove(struct pnp_dev *dev)
struct tpm_chip *chip = pnp_get_drvdata(dev);
if (chip) {
- release_region(chip->vendor->base, TPM_INF_PORT_LEN);
+ release_region(TPM_INF_BASE, TPM_INF_PORT_LEN);
+ release_region(TPM_INF_ADDR, TPM_INF_ADDR_LEN);
tpm_remove_hardware(chip->dev);
}
}
@@ -520,7 +521,7 @@ static struct pnp_driver tpm_inf_pnp = {
},
.id_table = tpm_pnp_tbl,
.probe = tpm_inf_pnp_probe,
- .remove = tpm_inf_pnp_remove,
+ .remove = __devexit_p(tpm_inf_pnp_remove),
};
static int __init init_inf(void)
@@ -538,5 +539,5 @@ module_exit(cleanup_inf);
MODULE_AUTHOR("Marcel Selhorst <selhorst@crypto.rub.de>");
MODULE_DESCRIPTION("Driver for Infineon TPM SLD 9630 TT 1.1 / SLB 9635 TT 1.2");
-MODULE_VERSION("1.7");
+MODULE_VERSION("1.8");
MODULE_LICENSE("GPL");
diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c
index 680a8e331887..4c8bc06c7d95 100644
--- a/drivers/char/tpm/tpm_nsc.c
+++ b/drivers/char/tpm/tpm_nsc.c
@@ -71,7 +71,7 @@ static int wait_for_stat(struct tpm_chip *chip, u8 mask, u8 val, u8 * data)
unsigned long stop;
/* status immediately available check */
- *data = inb(chip->vendor->base + NSC_STATUS);
+ *data = inb(chip->vendor.base + NSC_STATUS);
if ((*data & mask) == val)
return 0;
@@ -79,7 +79,7 @@ static int wait_for_stat(struct tpm_chip *chip, u8 mask, u8 val, u8 * data)
stop = jiffies + 10 * HZ;
do {
msleep(TPM_TIMEOUT);
- *data = inb(chip->vendor->base + 1);
+ *data = inb(chip->vendor.base + 1);
if ((*data & mask) == val)
return 0;
}
@@ -94,9 +94,9 @@ static int nsc_wait_for_ready(struct tpm_chip *chip)
unsigned long stop;
/* status immediately available check */
- status = inb(chip->vendor->base + NSC_STATUS);
+ status = inb(chip->vendor.base + NSC_STATUS);
if (status & NSC_STATUS_OBF)
- status = inb(chip->vendor->base + NSC_DATA);
+ status = inb(chip->vendor.base + NSC_DATA);
if (status & NSC_STATUS_RDY)
return 0;
@@ -104,9 +104,9 @@ static int nsc_wait_for_ready(struct tpm_chip *chip)
stop = jiffies + 100;
do {
msleep(TPM_TIMEOUT);
- status = inb(chip->vendor->base + NSC_STATUS);
+ status = inb(chip->vendor.base + NSC_STATUS);
if (status & NSC_STATUS_OBF)
- status = inb(chip->vendor->base + NSC_DATA);
+ status = inb(chip->vendor.base + NSC_DATA);
if (status & NSC_STATUS_RDY)
return 0;
}
@@ -132,7 +132,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
return -EIO;
}
if ((data =
- inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_NORMAL) {
+ inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_NORMAL) {
dev_err(chip->dev, "not in normal mode (0x%x)\n",
data);
return -EIO;
@@ -148,7 +148,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
}
if (data & NSC_STATUS_F0)
break;
- *p = inb(chip->vendor->base + NSC_DATA);
+ *p = inb(chip->vendor.base + NSC_DATA);
}
if ((data & NSC_STATUS_F0) == 0 &&
@@ -156,7 +156,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
dev_err(chip->dev, "F0 not set\n");
return -EIO;
}
- if ((data = inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_EOC) {
+ if ((data = inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_EOC) {
dev_err(chip->dev,
"expected end of command(0x%x)\n", data);
return -EIO;
@@ -182,7 +182,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
* fix it. Not sure why this is needed, we followed the flow
* chart in the manual to the letter.
*/
- outb(NSC_COMMAND_CANCEL, chip->vendor->base + NSC_COMMAND);
+ outb(NSC_COMMAND_CANCEL, chip->vendor.base + NSC_COMMAND);
if (nsc_wait_for_ready(chip) != 0)
return -EIO;
@@ -192,7 +192,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
return -EIO;
}
- outb(NSC_COMMAND_NORMAL, chip->vendor->base + NSC_COMMAND);
+ outb(NSC_COMMAND_NORMAL, chip->vendor.base + NSC_COMMAND);
if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) {
dev_err(chip->dev, "IBR timeout\n");
return -EIO;
@@ -204,26 +204,26 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
"IBF timeout (while writing data)\n");
return -EIO;
}
- outb(buf[i], chip->vendor->base + NSC_DATA);
+ outb(buf[i], chip->vendor.base + NSC_DATA);
}
if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
dev_err(chip->dev, "IBF timeout\n");
return -EIO;
}
- outb(NSC_COMMAND_EOC, chip->vendor->base + NSC_COMMAND);
+ outb(NSC_COMMAND_EOC, chip->vendor.base + NSC_COMMAND);
return count;
}
static void tpm_nsc_cancel(struct tpm_chip *chip)
{
- outb(NSC_COMMAND_CANCEL, chip->vendor->base + NSC_COMMAND);
+ outb(NSC_COMMAND_CANCEL, chip->vendor.base + NSC_COMMAND);
}
static u8 tpm_nsc_status(struct tpm_chip *chip)
{
- return inb(chip->vendor->base + NSC_STATUS);
+ return inb(chip->vendor.base + NSC_STATUS);
}
static struct file_operations nsc_ops = {
@@ -250,7 +250,7 @@ static struct attribute * nsc_attrs[] = {
static struct attribute_group nsc_attr_grp = { .attrs = nsc_attrs };
-static struct tpm_vendor_specific tpm_nsc = {
+static const struct tpm_vendor_specific tpm_nsc = {
.recv = tpm_nsc_recv,
.send = tpm_nsc_send,
.cancel = tpm_nsc_cancel,
@@ -268,7 +268,7 @@ static void __devexit tpm_nsc_remove(struct device *dev)
{
struct tpm_chip *chip = dev_get_drvdata(dev);
if ( chip ) {
- release_region(chip->vendor->base, 2);
+ release_region(chip->vendor.base, 2);
tpm_remove_hardware(chip->dev);
}
}
@@ -286,7 +286,8 @@ static int __init init_nsc(void)
int rc = 0;
int lo, hi;
int nscAddrBase = TPM_ADDR;
-
+ struct tpm_chip *chip;
+ unsigned long base;
/* verify that it is a National part (SID) */
if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) {
@@ -300,7 +301,7 @@ static int __init init_nsc(void)
hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI);
lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO);
- tpm_nsc.base = (hi<<8) | lo;
+ base = (hi<<8) | lo;
/* enable the DPM module */
tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01);
@@ -320,13 +321,15 @@ static int __init init_nsc(void)
if ((rc = platform_device_register(pdev)) < 0)
goto err_free_dev;
- if (request_region(tpm_nsc.base, 2, "tpm_nsc0") == NULL ) {
+ if (request_region(base, 2, "tpm_nsc0") == NULL ) {
rc = -EBUSY;
goto err_unreg_dev;
}
- if ((rc = tpm_register_hardware(&pdev->dev, &tpm_nsc)) < 0)
+ if (!(chip = tpm_register_hardware(&pdev->dev, &tpm_nsc))) {
+ rc = -ENODEV;
goto err_rel_reg;
+ }
dev_dbg(&pdev->dev, "NSC TPM detected\n");
dev_dbg(&pdev->dev,
@@ -361,10 +364,12 @@ static int __init init_nsc(void)
"NSC TPM revision %d\n",
tpm_read_index(nscAddrBase, 0x27) & 0x1F);
+ chip->vendor.base = base;
+
return 0;
err_rel_reg:
- release_region(tpm_nsc.base, 2);
+ release_region(base, 2);
err_unreg_dev:
platform_device_unregister(pdev);
err_free_dev:
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
new file mode 100644
index 000000000000..b9cae9a238bb
--- /dev/null
+++ b/drivers/char/tpm/tpm_tis.c
@@ -0,0 +1,669 @@
+/*
+ * Copyright (C) 2005, 2006 IBM Corporation
+ *
+ * Authors:
+ * Leendert van Doorn <leendert@watson.ibm.com>
+ * Kylene Hall <kjhall@us.ibm.com>
+ *
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org
+ *
+ * This device driver implements the TPM interface as defined in
+ * the TCG TPM Interface Spec version 1.2, revision 1.0.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pnp.h>
+#include <linux/interrupt.h>
+#include <linux/wait.h>
+#include "tpm.h"
+
+#define TPM_HEADER_SIZE 10
+
+enum tis_access {
+ TPM_ACCESS_VALID = 0x80,
+ TPM_ACCESS_ACTIVE_LOCALITY = 0x20,
+ TPM_ACCESS_REQUEST_PENDING = 0x04,
+ TPM_ACCESS_REQUEST_USE = 0x02,
+};
+
+enum tis_status {
+ TPM_STS_VALID = 0x80,
+ TPM_STS_COMMAND_READY = 0x40,
+ TPM_STS_GO = 0x20,
+ TPM_STS_DATA_AVAIL = 0x10,
+ TPM_STS_DATA_EXPECT = 0x08,
+};
+
+enum tis_int_flags {
+ TPM_GLOBAL_INT_ENABLE = 0x80000000,
+ TPM_INTF_BURST_COUNT_STATIC = 0x100,
+ TPM_INTF_CMD_READY_INT = 0x080,
+ TPM_INTF_INT_EDGE_FALLING = 0x040,
+ TPM_INTF_INT_EDGE_RISING = 0x020,
+ TPM_INTF_INT_LEVEL_LOW = 0x010,
+ TPM_INTF_INT_LEVEL_HIGH = 0x008,
+ TPM_INTF_LOCALITY_CHANGE_INT = 0x004,
+ TPM_INTF_STS_VALID_INT = 0x002,
+ TPM_INTF_DATA_AVAIL_INT = 0x001,
+};
+
+enum tis_defaults {
+ TIS_MEM_BASE = 0xFED4000,
+ TIS_MEM_LEN = 0x5000,
+ TIS_SHORT_TIMEOUT = 750, /* ms */
+ TIS_LONG_TIMEOUT = 2000, /* 2 sec */
+};
+
+#define TPM_ACCESS(l) (0x0000 | ((l) << 12))
+#define TPM_INT_ENABLE(l) (0x0008 | ((l) << 12))
+#define TPM_INT_VECTOR(l) (0x000C | ((l) << 12))
+#define TPM_INT_STATUS(l) (0x0010 | ((l) << 12))
+#define TPM_INTF_CAPS(l) (0x0014 | ((l) << 12))
+#define TPM_STS(l) (0x0018 | ((l) << 12))
+#define TPM_DATA_FIFO(l) (0x0024 | ((l) << 12))
+
+#define TPM_DID_VID(l) (0x0F00 | ((l) << 12))
+#define TPM_RID(l) (0x0F04 | ((l) << 12))
+
+static LIST_HEAD(tis_chips);
+static DEFINE_SPINLOCK(tis_lock);
+
+static int check_locality(struct tpm_chip *chip, int l)
+{
+ if ((ioread8(chip->vendor.iobase + TPM_ACCESS(l)) &
+ (TPM_ACCESS_ACTIVE_LOCALITY | TPM_ACCESS_VALID)) ==
+ (TPM_ACCESS_ACTIVE_LOCALITY | TPM_ACCESS_VALID))
+ return chip->vendor.locality = l;
+
+ return -1;
+}
+
+static void release_locality(struct tpm_chip *chip, int l, int force)
+{
+ if (force || (ioread8(chip->vendor.iobase + TPM_ACCESS(l)) &
+ (TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID)) ==
+ (TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID))
+ iowrite8(TPM_ACCESS_ACTIVE_LOCALITY,
+ chip->vendor.iobase + TPM_ACCESS(l));
+}
+
+static int request_locality(struct tpm_chip *chip, int l)
+{
+ unsigned long stop;
+ long rc;
+
+ if (check_locality(chip, l) >= 0)
+ return l;
+
+ iowrite8(TPM_ACCESS_REQUEST_USE,
+ chip->vendor.iobase + TPM_ACCESS(l));
+
+ if (chip->vendor.irq) {
+ rc = wait_event_interruptible_timeout(chip->vendor.int_queue,
+ (check_locality
+ (chip, l) >= 0),
+ chip->vendor.timeout_a);
+ if (rc > 0)
+ return l;
+
+ } else {
+ /* wait for burstcount */
+ stop = jiffies + chip->vendor.timeout_a;
+ do {
+ if (check_locality(chip, l) >= 0)
+ return l;
+ msleep(TPM_TIMEOUT);
+ }
+ while (time_before(jiffies, stop));
+ }
+ return -1;
+}
+
+static u8 tpm_tis_status(struct tpm_chip *chip)
+{
+ return ioread8(chip->vendor.iobase +
+ TPM_STS(chip->vendor.locality));
+}
+
+static void tpm_tis_ready(struct tpm_chip *chip)
+{
+ /* this causes the current command to be aborted */
+ iowrite8(TPM_STS_COMMAND_READY,
+ chip->vendor.iobase + TPM_STS(chip->vendor.locality));
+}
+
+static int get_burstcount(struct tpm_chip *chip)
+{
+ unsigned long stop;
+ int burstcnt;
+
+ /* wait for burstcount */
+ /* which timeout value, spec has 2 answers (c & d) */
+ stop = jiffies + chip->vendor.timeout_d;
+ do {
+ burstcnt = ioread8(chip->vendor.iobase +
+ TPM_STS(chip->vendor.locality) + 1);
+ burstcnt += ioread8(chip->vendor.iobase +
+ TPM_STS(chip->vendor.locality) +
+ 2) << 8;
+ if (burstcnt)
+ return burstcnt;
+ msleep(TPM_TIMEOUT);
+ } while (time_before(jiffies, stop));
+ return -EBUSY;
+}
+
+static int wait_for_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
+ wait_queue_head_t *queue)
+{
+ unsigned long stop;
+ long rc;
+ u8 status;
+
+ /* check current status */
+ status = tpm_tis_status(chip);
+ if ((status & mask) == mask)
+ return 0;
+
+ if (chip->vendor.irq) {
+ rc = wait_event_interruptible_timeout(*queue,
+ ((tpm_tis_status
+ (chip) & mask) ==
+ mask), timeout);
+ if (rc > 0)
+ return 0;
+ } else {
+ stop = jiffies + timeout;
+ do {
+ msleep(TPM_TIMEOUT);
+ status = tpm_tis_status(chip);
+ if ((status & mask) == mask)
+ return 0;
+ } while (time_before(jiffies, stop));
+ }
+ return -ETIME;
+}
+
+static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)
+{
+ int size = 0, burstcnt;
+ while (size < count &&
+ wait_for_stat(chip,
+ TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+ chip->vendor.timeout_c,
+ &chip->vendor.read_queue)
+ == 0) {
+ burstcnt = get_burstcount(chip);
+ for (; burstcnt > 0 && size < count; burstcnt--)
+ buf[size++] = ioread8(chip->vendor.iobase +
+ TPM_DATA_FIFO(chip->vendor.
+ locality));
+ }
+ return size;
+}
+
+static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+{
+ int size = 0;
+ int expected, status;
+
+ if (count < TPM_HEADER_SIZE) {
+ size = -EIO;
+ goto out;
+ }
+
+ /* read first 10 bytes, including tag, paramsize, and result */
+ if ((size =
+ recv_data(chip, buf, TPM_HEADER_SIZE)) < TPM_HEADER_SIZE) {
+ dev_err(chip->dev, "Unable to read header\n");
+ goto out;
+ }
+
+ expected = be32_to_cpu(*(__be32 *) (buf + 2));
+ if (expected > count) {
+ size = -EIO;
+ goto out;
+ }
+
+ if ((size +=
+ recv_data(chip, &buf[TPM_HEADER_SIZE],
+ expected - TPM_HEADER_SIZE)) < expected) {
+ dev_err(chip->dev, "Unable to read remainder of result\n");
+ size = -ETIME;
+ goto out;
+ }
+
+ wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
+ &chip->vendor.int_queue);
+ status = tpm_tis_status(chip);
+ if (status & TPM_STS_DATA_AVAIL) { /* retry? */
+ dev_err(chip->dev, "Error left over data\n");
+ size = -EIO;
+ goto out;
+ }
+
+out:
+ tpm_tis_ready(chip);
+ release_locality(chip, chip->vendor.locality, 0);
+ return size;
+}
+
+/*
+ * If interrupts are used (signaled by an irq set in the vendor structure)
+ * tpm.c can skip polling for the data to be available as the interrupt is
+ * waited for here
+ */
+static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len)
+{
+ int rc, status, burstcnt;
+ size_t count = 0;
+ u32 ordinal;
+
+ if (request_locality(chip, 0) < 0)
+ return -EBUSY;
+
+ status = tpm_tis_status(chip);
+ if ((status & TPM_STS_COMMAND_READY) == 0) {
+ tpm_tis_ready(chip);
+ if (wait_for_stat
+ (chip, TPM_STS_COMMAND_READY, chip->vendor.timeout_b,
+ &chip->vendor.int_queue) < 0) {
+ rc = -ETIME;
+ goto out_err;
+ }
+ }
+
+ while (count < len - 1) {
+ burstcnt = get_burstcount(chip);
+ for (; burstcnt > 0 && count < len - 1; burstcnt--) {
+ iowrite8(buf[count], chip->vendor.iobase +
+ TPM_DATA_FIFO(chip->vendor.locality));
+ count++;
+ }
+
+ wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
+ &chip->vendor.int_queue);
+ status = tpm_tis_status(chip);
+ if ((status & TPM_STS_DATA_EXPECT) == 0) {
+ rc = -EIO;
+ goto out_err;
+ }
+ }
+
+ /* write last byte */
+ iowrite8(buf[count],
+ chip->vendor.iobase +
+ TPM_DATA_FIFO(chip->vendor.locality));
+ wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
+ &chip->vendor.int_queue);
+ status = tpm_tis_status(chip);
+ if ((status & TPM_STS_DATA_EXPECT) != 0) {
+ rc = -EIO;
+ goto out_err;
+ }
+
+ /* go and do it */
+ iowrite8(TPM_STS_GO,
+ chip->vendor.iobase + TPM_STS(chip->vendor.locality));
+
+ if (chip->vendor.irq) {
+ ordinal = be32_to_cpu(*((__be32 *) (buf + 6)));
+ if (wait_for_stat
+ (chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+ tpm_calc_ordinal_duration(chip, ordinal),
+ &chip->vendor.read_queue) < 0) {
+ rc = -ETIME;
+ goto out_err;
+ }
+ }
+ return len;
+out_err:
+ tpm_tis_ready(chip);
+ release_locality(chip, chip->vendor.locality, 0);
+ return rc;
+}
+
+static struct file_operations tis_ops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .open = tpm_open,
+ .read = tpm_read,
+ .write = tpm_write,
+ .release = tpm_release,
+};
+
+static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL);
+static DEVICE_ATTR(pcrs, S_IRUGO, tpm_show_pcrs, NULL);
+static DEVICE_ATTR(enabled, S_IRUGO, tpm_show_enabled, NULL);
+static DEVICE_ATTR(active, S_IRUGO, tpm_show_active, NULL);
+static DEVICE_ATTR(owned, S_IRUGO, tpm_show_owned, NULL);
+static DEVICE_ATTR(temp_deactivated, S_IRUGO, tpm_show_temp_deactivated,
+ NULL);
+static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps_1_2, NULL);
+static DEVICE_ATTR(cancel, S_IWUSR | S_IWGRP, NULL, tpm_store_cancel);
+
+static struct attribute *tis_attrs[] = {
+ &dev_attr_pubek.attr,
+ &dev_attr_pcrs.attr,
+ &dev_attr_enabled.attr,
+ &dev_attr_active.attr,
+ &dev_attr_owned.attr,
+ &dev_attr_temp_deactivated.attr,
+ &dev_attr_caps.attr,
+ &dev_attr_cancel.attr, NULL,
+};
+
+static struct attribute_group tis_attr_grp = {
+ .attrs = tis_attrs
+};
+
+static struct tpm_vendor_specific tpm_tis = {
+ .status = tpm_tis_status,
+ .recv = tpm_tis_recv,
+ .send = tpm_tis_send,
+ .cancel = tpm_tis_ready,
+ .req_complete_mask = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+ .req_complete_val = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+ .req_canceled = TPM_STS_COMMAND_READY,
+ .attr_group = &tis_attr_grp,
+ .miscdev = {
+ .fops = &tis_ops,},
+};
+
+static irqreturn_t tis_int_probe(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct tpm_chip *chip = (struct tpm_chip *) dev_id;
+ u32 interrupt;
+
+ interrupt = ioread32(chip->vendor.iobase +
+ TPM_INT_STATUS(chip->vendor.locality));
+
+ if (interrupt == 0)
+ return IRQ_NONE;
+
+ chip->vendor.irq = irq;
+
+ /* Clear interrupts handled with TPM_EOI */
+ iowrite32(interrupt,
+ chip->vendor.iobase +
+ TPM_INT_STATUS(chip->vendor.locality));
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t tis_int_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct tpm_chip *chip = (struct tpm_chip *) dev_id;
+ u32 interrupt;
+ int i;
+
+ interrupt = ioread32(chip->vendor.iobase +
+ TPM_INT_STATUS(chip->vendor.locality));
+
+ if (interrupt == 0)
+ return IRQ_NONE;
+
+ if (interrupt & TPM_INTF_DATA_AVAIL_INT)
+ wake_up_interruptible(&chip->vendor.read_queue);
+ if (interrupt & TPM_INTF_LOCALITY_CHANGE_INT)
+ for (i = 0; i < 5; i++)
+ if (check_locality(chip, i) >= 0)
+ break;
+ if (interrupt &
+ (TPM_INTF_LOCALITY_CHANGE_INT | TPM_INTF_STS_VALID_INT |
+ TPM_INTF_CMD_READY_INT))
+ wake_up_interruptible(&chip->vendor.int_queue);
+
+ /* Clear interrupts handled with TPM_EOI */
+ iowrite32(interrupt,
+ chip->vendor.iobase +
+ TPM_INT_STATUS(chip->vendor.locality));
+ return IRQ_HANDLED;
+}
+
+static int interrupts = 1;
+module_param(interrupts, bool, 0444);
+MODULE_PARM_DESC(interrupts, "Enable interrupts");
+
+static int __devinit tpm_tis_pnp_init(struct pnp_dev *pnp_dev,
+ const struct pnp_device_id *pnp_id)
+{
+ u32 vendor, intfcaps, intmask;
+ int rc, i;
+ unsigned long start, len;
+ struct tpm_chip *chip;
+
+ start = pnp_mem_start(pnp_dev, 0);
+ len = pnp_mem_len(pnp_dev, 0);
+
+ if (!start)
+ start = TIS_MEM_BASE;
+ if (!len)
+ len = TIS_MEM_LEN;
+
+ if (!(chip = tpm_register_hardware(&pnp_dev->dev, &tpm_tis)))
+ return -ENODEV;
+
+ chip->vendor.iobase = ioremap(start, len);
+ if (!chip->vendor.iobase) {
+ rc = -EIO;
+ goto out_err;
+ }
+
+ vendor = ioread32(chip->vendor.iobase + TPM_DID_VID(0));
+ if ((vendor & 0xFFFF) == 0xFFFF) {
+ rc = -ENODEV;
+ goto out_err;
+ }
+
+ /* Default timeouts */
+ chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+ chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT);
+ chip->vendor.timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+ chip->vendor.timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+
+ dev_info(&pnp_dev->dev,
+ "1.2 TPM (device-id 0x%X, rev-id %d)\n",
+ vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0)));
+
+ /* Figure out the capabilities */
+ intfcaps =
+ ioread32(chip->vendor.iobase +
+ TPM_INTF_CAPS(chip->vendor.locality));
+ dev_dbg(&pnp_dev->dev, "TPM interface capabilities (0x%x):\n",
+ intfcaps);
+ if (intfcaps & TPM_INTF_BURST_COUNT_STATIC)
+ dev_dbg(&pnp_dev->dev, "\tBurst Count Static\n");
+ if (intfcaps & TPM_INTF_CMD_READY_INT)
+ dev_dbg(&pnp_dev->dev, "\tCommand Ready Int Support\n");
+ if (intfcaps & TPM_INTF_INT_EDGE_FALLING)
+ dev_dbg(&pnp_dev->dev, "\tInterrupt Edge Falling\n");
+ if (intfcaps & TPM_INTF_INT_EDGE_RISING)
+ dev_dbg(&pnp_dev->dev, "\tInterrupt Edge Rising\n");
+ if (intfcaps & TPM_INTF_INT_LEVEL_LOW)
+ dev_dbg(&pnp_dev->dev, "\tInterrupt Level Low\n");
+ if (intfcaps & TPM_INTF_INT_LEVEL_HIGH)
+ dev_dbg(&pnp_dev->dev, "\tInterrupt Level High\n");
+ if (intfcaps & TPM_INTF_LOCALITY_CHANGE_INT)
+ dev_dbg(&pnp_dev->dev, "\tLocality Change Int Support\n");
+ if (intfcaps & TPM_INTF_STS_VALID_INT)
+ dev_dbg(&pnp_dev->dev, "\tSts Valid Int Support\n");
+ if (intfcaps & TPM_INTF_DATA_AVAIL_INT)
+ dev_dbg(&pnp_dev->dev, "\tData Avail Int Support\n");
+
+ if (request_locality(chip, 0) != 0) {
+ rc = -ENODEV;
+ goto out_err;
+ }
+
+ /* INTERRUPT Setup */
+ init_waitqueue_head(&chip->vendor.read_queue);
+ init_waitqueue_head(&chip->vendor.int_queue);
+
+ intmask =
+ ioread32(chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+
+ intmask |= TPM_INTF_CMD_READY_INT
+ | TPM_INTF_LOCALITY_CHANGE_INT | TPM_INTF_DATA_AVAIL_INT
+ | TPM_INTF_STS_VALID_INT;
+
+ iowrite32(intmask,
+ chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+ if (interrupts) {
+ chip->vendor.irq =
+ ioread8(chip->vendor.iobase +
+ TPM_INT_VECTOR(chip->vendor.locality));
+
+ for (i = 3; i < 16 && chip->vendor.irq == 0; i++) {
+ iowrite8(i, chip->vendor.iobase +
+ TPM_INT_VECTOR(chip->vendor.locality));
+ if (request_irq
+ (i, tis_int_probe, SA_SHIRQ,
+ chip->vendor.miscdev.name, chip) != 0) {
+ dev_info(chip->dev,
+ "Unable to request irq: %d for probe\n",
+ i);
+ continue;
+ }
+
+ /* Clear all existing */
+ iowrite32(ioread32
+ (chip->vendor.iobase +
+ TPM_INT_STATUS(chip->vendor.locality)),
+ chip->vendor.iobase +
+ TPM_INT_STATUS(chip->vendor.locality));
+
+ /* Turn on */
+ iowrite32(intmask | TPM_GLOBAL_INT_ENABLE,
+ chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+
+ /* Generate Interrupts */
+ tpm_gen_interrupt(chip);
+
+ /* Turn off */
+ iowrite32(intmask,
+ chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+ free_irq(i, chip);
+ }
+ }
+ if (chip->vendor.irq) {
+ iowrite8(chip->vendor.irq,
+ chip->vendor.iobase +
+ TPM_INT_VECTOR(chip->vendor.locality));
+ if (request_irq
+ (chip->vendor.irq, tis_int_handler, SA_SHIRQ,
+ chip->vendor.miscdev.name, chip) != 0) {
+ dev_info(chip->dev,
+ "Unable to request irq: %d for use\n",
+ chip->vendor.irq);
+ chip->vendor.irq = 0;
+ } else {
+ /* Clear all existing */
+ iowrite32(ioread32
+ (chip->vendor.iobase +
+ TPM_INT_STATUS(chip->vendor.locality)),
+ chip->vendor.iobase +
+ TPM_INT_STATUS(chip->vendor.locality));
+
+ /* Turn on */
+ iowrite32(intmask | TPM_GLOBAL_INT_ENABLE,
+ chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+ }
+ }
+
+ INIT_LIST_HEAD(&chip->vendor.list);
+ spin_lock(&tis_lock);
+ list_add(&chip->vendor.list, &tis_chips);
+ spin_unlock(&tis_lock);
+
+ tpm_get_timeouts(chip);
+ tpm_continue_selftest(chip);
+
+ return 0;
+out_err:
+ if (chip->vendor.iobase)
+ iounmap(chip->vendor.iobase);
+ tpm_remove_hardware(chip->dev);
+ return rc;
+}
+
+static int tpm_tis_pnp_suspend(struct pnp_dev *dev, pm_message_t msg)
+{
+ return tpm_pm_suspend(&dev->dev, msg);
+}
+
+static int tpm_tis_pnp_resume(struct pnp_dev *dev)
+{
+ return tpm_pm_resume(&dev->dev);
+}
+
+static struct pnp_device_id tpm_pnp_tbl[] __devinitdata = {
+ {"PNP0C31", 0}, /* TPM */
+ {"ATM1200", 0}, /* Atmel */
+ {"IFX0102", 0}, /* Infineon */
+ {"BCM0101", 0}, /* Broadcom */
+ {"NSC1200", 0}, /* National */
+ /* Add new here */
+ {"", 0}, /* User Specified */
+ {"", 0} /* Terminator */
+};
+
+static struct pnp_driver tis_pnp_driver = {
+ .name = "tpm_tis",
+ .id_table = tpm_pnp_tbl,
+ .probe = tpm_tis_pnp_init,
+ .suspend = tpm_tis_pnp_suspend,
+ .resume = tpm_tis_pnp_resume,
+};
+
+#define TIS_HID_USR_IDX sizeof(tpm_pnp_tbl)/sizeof(struct pnp_device_id) -2
+module_param_string(hid, tpm_pnp_tbl[TIS_HID_USR_IDX].id,
+ sizeof(tpm_pnp_tbl[TIS_HID_USR_IDX].id), 0444);
+MODULE_PARM_DESC(hid, "Set additional specific HID for this driver to probe");
+
+static int __init init_tis(void)
+{
+ return pnp_register_driver(&tis_pnp_driver);
+}
+
+static void __exit cleanup_tis(void)
+{
+ struct tpm_vendor_specific *i, *j;
+ struct tpm_chip *chip;
+ spin_lock(&tis_lock);
+ list_for_each_entry_safe(i, j, &tis_chips, list) {
+ chip = to_tpm_chip(i);
+ iowrite32(~TPM_GLOBAL_INT_ENABLE &
+ ioread32(chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.
+ locality)),
+ chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+ release_locality(chip, chip->vendor.locality, 1);
+ if (chip->vendor.irq)
+ free_irq(chip->vendor.irq, chip);
+ iounmap(i->iobase);
+ list_del(&i->list);
+ tpm_remove_hardware(chip->dev);
+ }
+ spin_unlock(&tis_lock);
+ pnp_unregister_driver(&tis_pnp_driver);
+}
+
+module_init(init_tis);
+module_exit(cleanup_tis);
+MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)");
+MODULE_DESCRIPTION("TPM Driver");
+MODULE_VERSION("2.0");
+MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.