1 files changed, 58 insertions, 774 deletions

diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 129f640424b7..d9439f9abe78 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -33,297 +33,32 @@
 
 #include "tpm.h"
 
-#define TPM_MAX_ORDINAL 243
-#define TSC_MAX_ORDINAL 12
-#define TPM_PROTECTED_COMMAND 0x00
-#define TPM_CONNECTION_COMMAND 0x40
-
 /*
  * Bug workaround - some TPM's don't flush the most
  * recently changed pcr on suspend, so force the flush
  * with an extend to the selected _unused_ non-volatile pcr.
  */
-static int tpm_suspend_pcr;
+static u32 tpm_suspend_pcr;
 module_param_named(suspend_pcr, tpm_suspend_pcr, uint, 0644);
 MODULE_PARM_DESC(suspend_pcr,
 		 "PCR to use for dummy writes to facilitate flush on suspend.");
 
-/*
- * 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_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,
-};
-
-/*
- * Returns max number of jiffies to wait
+/**
+ * tpm_calc_ordinal_duration() - calculate the maximum command duration
+ * @chip:    TPM chip to use.
+ * @ordinal: TPM command ordinal.
+ *
+ * The function returns the maximum amount of time the chip could take
+ * to return the result for a particular ordinal in jiffies.
+ *
+ * Return: A maximal duration time for an ordinal in jiffies.
  */
-unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip,
-					   u32 ordinal)
+unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal)
 {
-	int duration_idx = TPM_UNDEFINED;
-	int duration = 0;
-
-	/*
-	 * We only have a duration table for protected commands, where the upper
-	 * 16 bits are 0. For the few other ordinals the fallback will be used.
-	 */
-	if (ordinal < TPM_MAX_ORDINAL)
-		duration_idx = tpm_ordinal_duration[ordinal];
-
-	if (duration_idx != TPM_UNDEFINED)
-		duration = chip->duration[duration_idx];
-	if (duration <= 0)
-		return 2 * 60 * HZ;
+	if (chip->flags & TPM_CHIP_FLAG_TPM2)
+		return tpm2_calc_ordinal_duration(chip, ordinal);
 	else
-		return duration;
+		return tpm1_calc_ordinal_duration(chip, ordinal);
 }
 EXPORT_SYMBOL_GPL(tpm_calc_ordinal_duration);
 
@@ -477,13 +212,15 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
 
 	if (need_locality) {
 		rc = tpm_request_locality(chip, flags);
-		if (rc < 0)
-			goto out_no_locality;
+		if (rc < 0) {
+			need_locality = false;
+			goto out_locality;
+		}
 	}
 
 	rc = tpm_cmd_ready(chip, flags);
 	if (rc)
-		goto out;
+		goto out_locality;
 
 	rc = tpm2_prepare_space(chip, space, ordinal, buf);
 	if (rc)
@@ -500,10 +237,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
 	if (chip->flags & TPM_CHIP_FLAG_IRQ)
 		goto out_recv;
 
-	if (chip->flags & TPM_CHIP_FLAG_TPM2)
-		stop = jiffies + tpm2_calc_ordinal_duration(chip, ordinal);
-	else
-		stop = jiffies + tpm_calc_ordinal_duration(chip, ordinal);
+	stop = jiffies + tpm_calc_ordinal_duration(chip, ordinal);
 	do {
 		u8 status = chip->ops->status(chip);
 		if ((status & chip->ops->req_complete_mask) ==
@@ -547,14 +281,13 @@ out_recv:
 		dev_err(&chip->dev, "tpm2_commit_space: error %d\n", rc);
 
 out:
-	rc = tpm_go_idle(chip, flags);
-	if (rc)
-		goto out;
+	/* may fail but do not override previous error value in rc */
+	tpm_go_idle(chip, flags);
 
+out_locality:
 	if (need_locality)
 		tpm_relinquish_locality(chip, flags);
 
-out_no_locality:
 	if (chip->ops->clk_enable != NULL)
 		chip->ops->clk_enable(chip, false);
 
@@ -677,277 +410,18 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space,
 }
 EXPORT_SYMBOL_GPL(tpm_transmit_cmd);
 
-#define TPM_ORD_STARTUP 153
-#define TPM_ST_CLEAR 1
-
-/**
- * tpm_startup - turn on the TPM
- * @chip: TPM chip to use
- *
- * Normally the firmware should start the TPM. This function is provided as a
- * workaround if this does not happen. A legal case for this could be for
- * example when a TPM emulator is used.
- *
- * Return: same as tpm_transmit_cmd()
- */
-int tpm_startup(struct tpm_chip *chip)
-{
-	struct tpm_buf buf;
-	int rc;
-
-	dev_info(&chip->dev, "starting up the TPM manually\n");
-
-	if (chip->flags & TPM_CHIP_FLAG_TPM2) {
-		rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_STARTUP);
-		if (rc < 0)
-			return rc;
-
-		tpm_buf_append_u16(&buf, TPM2_SU_CLEAR);
-	} else {
-		rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_STARTUP);
-		if (rc < 0)
-			return rc;
-
-		tpm_buf_append_u16(&buf, TPM_ST_CLEAR);
-	}
-
-	rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0,
-			      "attempting to start the TPM");
-
-	tpm_buf_destroy(&buf);
-	return rc;
-}
-
-#define TPM_DIGEST_SIZE 20
-#define TPM_RET_CODE_IDX 6
-#define TPM_INTERNAL_RESULT_SIZE 200
-#define TPM_ORD_GET_CAP 101
-#define TPM_ORD_GET_RANDOM 70
-
-static const struct tpm_input_header tpm_getcap_header = {
-	.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
-	.length = cpu_to_be32(22),
-	.ordinal = cpu_to_be32(TPM_ORD_GET_CAP)
-};
-
-ssize_t tpm_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
-		   const char *desc, size_t min_cap_length)
-{
-	struct tpm_buf buf;
-	int rc;
-
-	rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_GET_CAP);
-	if (rc)
-		return rc;
-
-	if (subcap_id == TPM_CAP_VERSION_1_1 ||
-	    subcap_id == TPM_CAP_VERSION_1_2) {
-		tpm_buf_append_u32(&buf, subcap_id);
-		tpm_buf_append_u32(&buf, 0);
-	} else {
-		if (subcap_id == TPM_CAP_FLAG_PERM ||
-		    subcap_id == TPM_CAP_FLAG_VOL)
-			tpm_buf_append_u32(&buf, TPM_CAP_FLAG);
-		else
-			tpm_buf_append_u32(&buf, TPM_CAP_PROP);
-
-		tpm_buf_append_u32(&buf, 4);
-		tpm_buf_append_u32(&buf, subcap_id);
-	}
-	rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE,
-			      min_cap_length, 0, desc);
-	if (!rc)
-		*cap = *(cap_t *)&buf.data[TPM_HEADER_SIZE + 4];
-
-	tpm_buf_destroy(&buf);
-	return rc;
-}
-EXPORT_SYMBOL_GPL(tpm_getcap);
-
 int tpm_get_timeouts(struct tpm_chip *chip)
 {
-	cap_t cap;
-	unsigned long timeout_old[4], timeout_chip[4], timeout_eff[4];
-	ssize_t rc;
-
 	if (chip->flags & TPM_CHIP_FLAG_HAVE_TIMEOUTS)
 		return 0;
 
-	if (chip->flags & TPM_CHIP_FLAG_TPM2) {
-		/* Fixed timeouts for TPM2 */
-		chip->timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);
-		chip->timeout_b = msecs_to_jiffies(TPM2_TIMEOUT_B);
-		chip->timeout_c = msecs_to_jiffies(TPM2_TIMEOUT_C);
-		chip->timeout_d = msecs_to_jiffies(TPM2_TIMEOUT_D);
-		chip->duration[TPM_SHORT] =
-		    msecs_to_jiffies(TPM2_DURATION_SHORT);
-		chip->duration[TPM_MEDIUM] =
-		    msecs_to_jiffies(TPM2_DURATION_MEDIUM);
-		chip->duration[TPM_LONG] =
-		    msecs_to_jiffies(TPM2_DURATION_LONG);
-		chip->duration[TPM_LONG_LONG] =
-		    msecs_to_jiffies(TPM2_DURATION_LONG_LONG);
-
-		chip->flags |= TPM_CHIP_FLAG_HAVE_TIMEOUTS;
-		return 0;
-	}
-
-	rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, NULL,
-			sizeof(cap.timeout));
-	if (rc == TPM_ERR_INVALID_POSTINIT) {
-		if (tpm_startup(chip))
-			return rc;
-
-		rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap,
-				"attempting to determine the timeouts",
-				sizeof(cap.timeout));
-	}
-
-	if (rc) {
-		dev_err(&chip->dev,
-			"A TPM error (%zd) occurred attempting to determine the timeouts\n",
-			rc);
-		return rc;
-	}
-
-	timeout_old[0] = jiffies_to_usecs(chip->timeout_a);
-	timeout_old[1] = jiffies_to_usecs(chip->timeout_b);
-	timeout_old[2] = jiffies_to_usecs(chip->timeout_c);
-	timeout_old[3] = jiffies_to_usecs(chip->timeout_d);
-	timeout_chip[0] = be32_to_cpu(cap.timeout.a);
-	timeout_chip[1] = be32_to_cpu(cap.timeout.b);
-	timeout_chip[2] = be32_to_cpu(cap.timeout.c);
-	timeout_chip[3] = be32_to_cpu(cap.timeout.d);
-	memcpy(timeout_eff, timeout_chip, sizeof(timeout_eff));
-
-	/*
-	 * Provide ability for vendor overrides of timeout values in case
-	 * of misreporting.
-	 */
-	if (chip->ops->update_timeouts != NULL)
-		chip->timeout_adjusted =
-			chip->ops->update_timeouts(chip, timeout_eff);
-
-	if (!chip->timeout_adjusted) {
-		/* Restore default if chip reported 0 */
-		int i;
-
-		for (i = 0; i < ARRAY_SIZE(timeout_eff); i++) {
-			if (timeout_eff[i])
-				continue;
-
-			timeout_eff[i] = timeout_old[i];
-			chip->timeout_adjusted = true;
-		}
-
-		if (timeout_eff[0] != 0 && timeout_eff[0] < 1000) {
-			/* timeouts in msec rather usec */
-			for (i = 0; i != ARRAY_SIZE(timeout_eff); i++)
-				timeout_eff[i] *= 1000;
-			chip->timeout_adjusted = true;
-		}
-	}
-
-	/* Report adjusted timeouts */
-	if (chip->timeout_adjusted) {
-		dev_info(&chip->dev,
-			 HW_ERR "Adjusting reported timeouts: A %lu->%luus B %lu->%luus C %lu->%luus D %lu->%luus\n",
-			 timeout_chip[0], timeout_eff[0],
-			 timeout_chip[1], timeout_eff[1],
-			 timeout_chip[2], timeout_eff[2],
-			 timeout_chip[3], timeout_eff[3]);
-	}
-
-	chip->timeout_a = usecs_to_jiffies(timeout_eff[0]);
-	chip->timeout_b = usecs_to_jiffies(timeout_eff[1]);
-	chip->timeout_c = usecs_to_jiffies(timeout_eff[2]);
-	chip->timeout_d = usecs_to_jiffies(timeout_eff[3]);
-
-	rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_DURATION, &cap,
-			"attempting to determine the durations",
-			sizeof(cap.duration));
-	if (rc)
-		return rc;
-
-	chip->duration[TPM_SHORT] =
-		usecs_to_jiffies(be32_to_cpu(cap.duration.tpm_short));
-	chip->duration[TPM_MEDIUM] =
-		usecs_to_jiffies(be32_to_cpu(cap.duration.tpm_medium));
-	chip->duration[TPM_LONG] =
-		usecs_to_jiffies(be32_to_cpu(cap.duration.tpm_long));
-	chip->duration[TPM_LONG_LONG] = 0; /* not used under 1.2 */
-
-	/* The Broadcom BCM0102 chipset in a Dell Latitude D820 gets the above
-	 * value wrong and apparently reports msecs rather than usecs. So we
-	 * fix up the resulting too-small TPM_SHORT value to make things work.
-	 * We also scale the TPM_MEDIUM and -_LONG values by 1000.
-	 */
-	if (chip->duration[TPM_SHORT] < (HZ / 100)) {
-		chip->duration[TPM_SHORT] = HZ;
-		chip->duration[TPM_MEDIUM] *= 1000;
-		chip->duration[TPM_LONG] *= 1000;
-		chip->duration_adjusted = true;
-		dev_info(&chip->dev, "Adjusting TPM timeout parameters.");
-	}
-
-	chip->flags |= TPM_CHIP_FLAG_HAVE_TIMEOUTS;
-	return 0;
+	if (chip->flags & TPM_CHIP_FLAG_TPM2)
+		return tpm2_get_timeouts(chip);
+	else
+		return tpm1_get_timeouts(chip);
 }
 EXPORT_SYMBOL_GPL(tpm_get_timeouts);
 
-#define TPM_ORD_CONTINUE_SELFTEST 83
-#define CONTINUE_SELFTEST_RESULT_SIZE 10
-
-static const struct tpm_input_header continue_selftest_header = {
-	.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
-	.length = cpu_to_be32(10),
-	.ordinal = cpu_to_be32(TPM_ORD_CONTINUE_SELFTEST),
-};
-
-/**
- * tpm_continue_selftest -- run TPM's selftest
- * @chip: TPM chip to use
- *
- * Returns 0 on success, < 0 in case of fatal error or a value > 0 representing
- * a TPM error code.
- */
-static int tpm_continue_selftest(struct tpm_chip *chip)
-{
-	int rc;
-	struct tpm_cmd_t cmd;
-
-	cmd.header.in = continue_selftest_header;
-	rc = tpm_transmit_cmd(chip, NULL, &cmd, CONTINUE_SELFTEST_RESULT_SIZE,
-			      0, 0, "continue selftest");
-	return rc;
-}
-
-#define TPM_ORDINAL_PCRREAD 21
-#define READ_PCR_RESULT_SIZE 30
-#define READ_PCR_RESULT_BODY_SIZE 20
-static const struct tpm_input_header pcrread_header = {
-	.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
-	.length = cpu_to_be32(14),
-	.ordinal = cpu_to_be32(TPM_ORDINAL_PCRREAD)
-};
-
-int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
-{
-	int rc;
-	struct tpm_cmd_t cmd;
-
-	cmd.header.in = pcrread_header;
-	cmd.params.pcrread_in.pcr_idx = cpu_to_be32(pcr_idx);
-	rc = tpm_transmit_cmd(chip, NULL, &cmd, READ_PCR_RESULT_SIZE,
-			      READ_PCR_RESULT_BODY_SIZE, 0,
-			      "attempting to read a pcr value");
-
-	if (rc == 0)
-		memcpy(res_buf, cmd.params.pcrread_out.pcr_result,
-		       TPM_DIGEST_SIZE);
-	return rc;
-}
-
 /**
  * tpm_is_tpm2 - do we a have a TPM2 chip?
  * @chip:	a &struct tpm_chip instance, %NULL for the default chip
@@ -981,50 +455,24 @@ EXPORT_SYMBOL_GPL(tpm_is_tpm2);
  *
  * Return: same as with tpm_transmit_cmd()
  */
-int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
+int tpm_pcr_read(struct tpm_chip *chip, u32 pcr_idx, u8 *res_buf)
 {
 	int rc;
 
 	chip = tpm_find_get_ops(chip);
 	if (!chip)
 		return -ENODEV;
+
 	if (chip->flags & TPM_CHIP_FLAG_TPM2)
 		rc = tpm2_pcr_read(chip, pcr_idx, res_buf);
 	else
-		rc = tpm_pcr_read_dev(chip, pcr_idx, res_buf);
+		rc = tpm1_pcr_read(chip, pcr_idx, res_buf);
+
 	tpm_put_ops(chip);
 	return rc;
 }
 EXPORT_SYMBOL_GPL(tpm_pcr_read);
 
-#define TPM_ORD_PCR_EXTEND 20
-#define EXTEND_PCR_RESULT_SIZE 34
-#define EXTEND_PCR_RESULT_BODY_SIZE 20
-static const struct tpm_input_header pcrextend_header = {
-	.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
-	.length = cpu_to_be32(34),
-	.ordinal = cpu_to_be32(TPM_ORD_PCR_EXTEND)
-};
-
-static int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
-			   char *log_msg)
-{
-	struct tpm_buf buf;
-	int rc;
-
-	rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_PCR_EXTEND);
-	if (rc)
-		return rc;
-
-	tpm_buf_append_u32(&buf, pcr_idx);
-	tpm_buf_append(&buf, hash, TPM_DIGEST_SIZE);
-
-	rc = tpm_transmit_cmd(chip, NULL, buf.data, EXTEND_PCR_RESULT_SIZE,
-			      EXTEND_PCR_RESULT_BODY_SIZE, 0, log_msg);
-	tpm_buf_destroy(&buf);
-	return rc;
-}
-
 /**
  * tpm_pcr_extend - extend a PCR value in SHA1 bank.
  * @chip:	a &struct tpm_chip instance, %NULL for the default chip
@@ -1037,7 +485,7 @@ static int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
  *
  * Return: same as with tpm_transmit_cmd()
  */
-int tpm_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash)
+int tpm_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, const u8 *hash)
 {
 	int rc;
 	struct tpm2_digest digest_list[ARRAY_SIZE(chip->active_banks)];
@@ -1071,97 +519,6 @@ int tpm_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash)
 EXPORT_SYMBOL_GPL(tpm_pcr_extend);
 
 /**
- * tpm_do_selftest - have the TPM continue its selftest and wait until it
- *                   can receive further commands
- * @chip: TPM chip to use
- *
- * Returns 0 on success, < 0 in case of fatal error or a value > 0 representing
- * a TPM error code.
- */
-int tpm_do_selftest(struct tpm_chip *chip)
-{
-	int rc;
-	unsigned int loops;
-	unsigned int delay_msec = 100;
-	unsigned long duration;
-	u8 dummy[TPM_DIGEST_SIZE];
-
-	duration = tpm_calc_ordinal_duration(chip, TPM_ORD_CONTINUE_SELFTEST);
-
-	loops = jiffies_to_msecs(duration) / delay_msec;
-
-	rc = tpm_continue_selftest(chip);
-	if (rc == TPM_ERR_INVALID_POSTINIT) {
-		chip->flags |= TPM_CHIP_FLAG_ALWAYS_POWERED;
-		dev_info(&chip->dev, "TPM not ready (%d)\n", rc);
-	}
-	/* This may fail if there was no TPM driver during a suspend/resume
-	 * cycle; some may return 10 (BAD_ORDINAL), others 28 (FAILEDSELFTEST)
-	 */
-	if (rc)
-		return rc;
-
-	do {
-		/* Attempt to read a PCR value */
-		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. */
-		if (rc == -ETIME) {
-			dev_info(
-			    &chip->dev, HW_ERR
-			    "TPM command timed out during continue self test");
-			tpm_msleep(delay_msec);
-			continue;
-		}
-
-		if (rc == TPM_ERR_DISABLED || rc == TPM_ERR_DEACTIVATED) {
-			dev_info(&chip->dev,
-				 "TPM is disabled/deactivated (0x%X)\n", rc);
-			/* TPM is disabled and/or deactivated; driver can
-			 * proceed and TPM does handle commands for
-			 * suspend/resume correctly
-			 */
-			return 0;
-		}
-		if (rc != TPM_WARN_DOING_SELFTEST)
-			return rc;
-		tpm_msleep(delay_msec);
-	} while (--loops > 0);
-
-	return rc;
-}
-EXPORT_SYMBOL_GPL(tpm_do_selftest);
-
-/**
- * tpm1_auto_startup - Perform the standard automatic TPM initialization
- *                     sequence
- * @chip: TPM chip to use
- *
- * Returns 0 on success, < 0 in case of fatal error.
- */
-int tpm1_auto_startup(struct tpm_chip *chip)
-{
-	int rc;
-
-	rc = tpm_get_timeouts(chip);
-	if (rc)
-		goto out;
-	rc = tpm_do_selftest(chip);
-	if (rc) {
-		dev_err(&chip->dev, "TPM self test failed\n");
-		goto out;
-	}
-
-	return rc;
-out:
-	if (rc > 0)
-		rc = -ENODEV;
-	return rc;
-}
-
-/**
  * tpm_send - send a TPM command
  * @chip:	a &struct tpm_chip instance, %NULL for the default chip
  * @cmd:	a TPM command buffer
@@ -1184,14 +541,20 @@ int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen)
 }
 EXPORT_SYMBOL_GPL(tpm_send);
 
-#define TPM_ORD_SAVESTATE 152
-#define SAVESTATE_RESULT_SIZE 10
+int tpm_auto_startup(struct tpm_chip *chip)
+{
+	int rc;
+
+	if (!(chip->ops->flags & TPM_OPS_AUTO_STARTUP))
+		return 0;
 
-static const struct tpm_input_header savestate_header = {
-	.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
-	.length = cpu_to_be32(10),
-	.ordinal = cpu_to_be32(TPM_ORD_SAVESTATE)
-};
+	if (chip->flags & TPM_CHIP_FLAG_TPM2)
+		rc = tpm2_auto_startup(chip);
+	else
+		rc = tpm1_auto_startup(chip);
+
+	return rc;
+}
 
 /*
  * We are about to suspend. Save the TPM state
@@ -1200,54 +563,18 @@ static const struct tpm_input_header savestate_header = {
 int tpm_pm_suspend(struct device *dev)
 {
 	struct tpm_chip *chip = dev_get_drvdata(dev);
-	struct tpm_cmd_t cmd;
-	int rc, try;
+	int rc = 0;
 
-	u8 dummy_hash[TPM_DIGEST_SIZE] = { 0 };
-
-	if (chip == NULL)
+	if (!chip)
 		return -ENODEV;
 
 	if (chip->flags & TPM_CHIP_FLAG_ALWAYS_POWERED)
 		return 0;
 
-	if (chip->flags & TPM_CHIP_FLAG_TPM2) {
+	if (chip->flags & TPM_CHIP_FLAG_TPM2)
 		tpm2_shutdown(chip, TPM2_SU_STATE);
-		return 0;
-	}
-
-	/* for buggy tpm, flush pcrs with extend to selected dummy */
-	if (tpm_suspend_pcr)
-		rc = tpm1_pcr_extend(chip, tpm_suspend_pcr, dummy_hash,
-				     "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, NULL, &cmd, SAVESTATE_RESULT_SIZE,
-				      0, 0, NULL);
-
-		/*
-		 * If the TPM indicates that it is too busy to respond to
-		 * this command then retry before giving up.  It can take
-		 * several seconds for this TPM to be ready.
-		 *
-		 * This can happen if the TPM has already been sent the
-		 * SaveState command before the driver has loaded.  TCG 1.2
-		 * specification states that any communication after SaveState
-		 * may cause the TPM to invalidate previously saved state.
-		 */
-		if (rc != TPM_WARN_RETRY)
-			break;
-		tpm_msleep(TPM_TIMEOUT_RETRY);
-	}
-
-	if (rc)
-		dev_err(&chip->dev,
-			"Error (%d) sending savestate before suspend\n", rc);
-	else if (try > 0)
-		dev_warn(&chip->dev, "TPM savestate took %dms\n",
-			 try * TPM_TIMEOUT_RETRY);
+	else
+		rc = tpm1_pm_suspend(chip, tpm_suspend_pcr);
 
 	return rc;
 }
@@ -1268,75 +595,32 @@ int tpm_pm_resume(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(tpm_pm_resume);
 
-#define TPM_GETRANDOM_RESULT_SIZE	18
-static const struct tpm_input_header tpm_getrandom_header = {
-	.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
-	.length = cpu_to_be32(14),
-	.ordinal = cpu_to_be32(TPM_ORD_GET_RANDOM)
-};
-
 /**
  * tpm_get_random() - get random bytes from the TPM's RNG
  * @chip:	a &struct tpm_chip instance, %NULL for the default chip
  * @out:	destination buffer for the random bytes
  * @max:	the max number of bytes to write to @out
  *
- * Return: same as with tpm_transmit_cmd()
+ * Return: number of random bytes read or a negative error value.
  */
 int tpm_get_random(struct tpm_chip *chip, u8 *out, size_t max)
 {
-	struct tpm_cmd_t tpm_cmd;
-	u32 recd, num_bytes = min_t(u32, max, TPM_MAX_RNG_DATA), rlength;
-	int err, total = 0, retries = 5;
-	u8 *dest = out;
+	int rc;
 
-	if (!out || !num_bytes || max > TPM_MAX_RNG_DATA)
+	if (!out || max > TPM_MAX_RNG_DATA)
 		return -EINVAL;
 
 	chip = tpm_find_get_ops(chip);
 	if (!chip)
 		return -ENODEV;
 
-	if (chip->flags & TPM_CHIP_FLAG_TPM2) {
-		err = tpm2_get_random(chip, out, max);
-		tpm_put_ops(chip);
-		return err;
-	}
-
-	do {
-		tpm_cmd.header.in = tpm_getrandom_header;
-		tpm_cmd.params.getrandom_in.num_bytes = cpu_to_be32(num_bytes);
-
-		err = tpm_transmit_cmd(chip, NULL, &tpm_cmd,
-				       TPM_GETRANDOM_RESULT_SIZE + num_bytes,
-				       offsetof(struct tpm_getrandom_out,
-						rng_data),
-				       0, "attempting get random");
-		if (err)
-			break;
-
-		recd = be32_to_cpu(tpm_cmd.params.getrandom_out.rng_data_len);
-		if (recd > num_bytes) {
-			total = -EFAULT;
-			break;
-		}
-
-		rlength = be32_to_cpu(tpm_cmd.header.out.length);
-		if (rlength < TPM_HEADER_SIZE +
-			      offsetof(struct tpm_getrandom_out, rng_data) +
-			      recd) {
-			total = -EFAULT;
-			break;
-		}
-		memcpy(dest, tpm_cmd.params.getrandom_out.rng_data, recd);
-
-		dest += recd;
-		total += recd;
-		num_bytes -= recd;
-	} while (retries-- && total < max);
+	if (chip->flags & TPM_CHIP_FLAG_TPM2)
+		rc = tpm2_get_random(chip, out, max);
+	else
+		rc = tpm1_get_random(chip, out, max);
 
 	tpm_put_ops(chip);
-	return total ? total : -EIO;
+	return rc;
 }
 EXPORT_SYMBOL_GPL(tpm_get_random);