tpm: refactor function names and macros for infineon v1.2 TPM

[J-u-boot.git] / drivers / tpm / tpm_tis_infineon.c

diff --git a/drivers/tpm/tpm_tis_infineon.c b/drivers/tpm/tpm_tis_infineon.c
index f57c32837be3a0cc068b93fc8af2e490323b839c..525ad72f4c92ec4d36fd0edd1c5c6b8cf2190d1b 100644 (file)
--- a/drivers/tpm/tpm_tis_infineon.c
+++ b/drivers/tpm/tpm_tis_infineon.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2011 Infineon Technologies
  *
@@ -16,24 +17,32 @@
  * Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
  *
  * Version: 2.1.1
- *
- * SPDX-License-Identifier:    GPL-2.0
  */
 
 #include <common.h>
 #include <dm.h>
 #include <fdtdec.h>
 #include <i2c.h>
-#include <tpm.h>
-#include <asm-generic/errno.h>
+#include <log.h>
+#include <tpm-v1.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
 #include <linux/compiler.h>
 #include <linux/types.h>
 #include <linux/unaligned/be_byteshift.h>
 
-#include "tpm_tis_infineon.h"
+#include "tpm_tis.h"
 #include "tpm_internal.h"
 
-DECLARE_GLOBAL_DATA_PTR;
+enum i2c_chip_type {
+       SLB9635,
+       SLB9645,
+       UNKNOWN,
+};
+
+/* expected value for DIDVID register */
+#define TPM_TIS_I2C_DID_VID_9635 0x000b15d1L
+#define TPM_TIS_I2C_DID_VID_9645 0x001a15d1L
 
 static const char * const chip_name[] = {
        [SLB9635] = "slb9635tt",
@@ -41,6 +50,11 @@ static const char * const chip_name[] = {
        [UNKNOWN] = "unknown/fallback to slb9635",
 };
 
+#define        TPM_INFINEON_ACCESS(l)                  (0x0000 | ((l) << 4))
+#define        TPM_INFINEON_STS(l)                     (0x0001 | ((l) << 4))
+#define        TPM_INFINEON_DATA_FIFO(l)               (0x0005 | ((l) << 4))
+#define        TPM_INFINEON_DID_VID(l)                 (0x0006 | ((l) << 4))
+
 /*
  * tpm_tis_i2c_read() - read from TPM register
  * @addr: register address to read from
@@ -183,7 +197,7 @@ static int tpm_tis_i2c_check_locality(struct udevice *dev, int loc)
        u8 buf;
        int rc;
 
-       rc = tpm_tis_i2c_read(dev, TPM_ACCESS(loc), &buf, 1);
+       rc = tpm_tis_i2c_read(dev, TPM_INFINEON_ACCESS(loc), &buf, 1);
        if (rc < 0)
                return rc;
 
@@ -201,12 +215,12 @@ static void tpm_tis_i2c_release_locality(struct udevice *dev, int loc,
        const u8 mask = TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID;
        u8 buf;
 
-       if (tpm_tis_i2c_read(dev, TPM_ACCESS(loc), &buf, 1) < 0)
+       if (tpm_tis_i2c_read(dev, TPM_INFINEON_ACCESS(loc), &buf, 1) < 0)
                return;
 
        if (force || (buf & mask) == mask) {
                buf = TPM_ACCESS_ACTIVE_LOCALITY;
-               tpm_tis_i2c_write(dev, TPM_ACCESS(loc), &buf, 1);
+               tpm_tis_i2c_write(dev, TPM_INFINEON_ACCESS(loc), &buf, 1);
        }
 }
 
@@ -226,7 +240,7 @@ static int tpm_tis_i2c_request_locality(struct udevice *dev, int loc)
                return rc;
        }
 
-       rc = tpm_tis_i2c_write(dev, TPM_ACCESS(loc), &buf, 1);
+       rc = tpm_tis_i2c_write(dev, TPM_INFINEON_ACCESS(loc), &buf, 1);
        if (rc) {
                debug("%s: Failed to write to TPM: %d\n", __func__, rc);
                return rc;
@@ -257,7 +271,7 @@ static u8 tpm_tis_i2c_status(struct udevice *dev)
        /* NOTE: Since i2c read may fail, return 0 in this case --> time-out */
        u8 buf;
 
-       if (tpm_tis_i2c_read(dev, TPM_STS(chip->locality), &buf, 1) < 0)
+       if (tpm_tis_i2c_read(dev, TPM_INFINEON_STS(chip->locality), &buf, 1) < 0)
                return 0;
        else
                return buf;
@@ -272,7 +286,7 @@ static int tpm_tis_i2c_ready(struct udevice *dev)
        u8 buf = TPM_STS_COMMAND_READY;
 
        debug("%s\n", __func__);
-       rc = tpm_tis_i2c_write_long(dev, TPM_STS(chip->locality), &buf, 1);
+       rc = tpm_tis_i2c_write_long(dev, TPM_INFINEON_STS(chip->locality), &buf, 1);
        if (rc)
                debug("%s: rc=%d\n", __func__, rc);
 
@@ -292,7 +306,7 @@ static ssize_t tpm_tis_i2c_get_burstcount(struct udevice *dev)
        stop = chip->timeout_d;
        do {
                /* Note: STS is little endian */
-               addr = TPM_STS(chip->locality) + 1;
+               addr = TPM_INFINEON_STS(chip->locality) + 1;
                if (tpm_tis_i2c_read(dev, addr, buf, 3) < 0)
                        burstcnt = 0;
                else
@@ -346,7 +360,7 @@ static int tpm_tis_i2c_recv_data(struct udevice *dev, u8 *buf, size_t count)
                if (burstcnt > (count - size))
                        burstcnt = count - size;
 
-               rc = tpm_tis_i2c_read(dev, TPM_DATA_FIFO(chip->locality),
+               rc = tpm_tis_i2c_read(dev, TPM_INFINEON_DATA_FIFO(chip->locality),
                                      &(buf[size]), burstcnt);
                if (rc == 0)
                        size += burstcnt;
@@ -359,7 +373,8 @@ static int tpm_tis_i2c_recv(struct udevice *dev, u8 *buf, size_t count)
 {
        struct tpm_chip *chip = dev_get_priv(dev);
        int size = 0;
-       int expected, status;
+       int status;
+       unsigned int expected;
        int rc;
 
        status = tpm_tis_i2c_status(dev);
@@ -379,7 +394,7 @@ static int tpm_tis_i2c_recv(struct udevice *dev, u8 *buf, size_t count)
        }
 
        expected = get_unaligned_be32(buf + TPM_RSP_SIZE_BYTE);
-       if ((size_t)expected > count) {
+       if ((size_t)expected > count || (size_t)expected < TPM_HEADER_SIZE) {
                debug("Error size=%x, expected=%x, count=%x\n", size, expected,
                      count);
                return -ENOSPC;
@@ -447,7 +462,7 @@ static int tpm_tis_i2c_send(struct udevice *dev, const u8 *buf, size_t len)
                        burstcnt = CONFIG_TPM_TIS_I2C_BURST_LIMITATION_LEN;
 #endif /* CONFIG_TPM_TIS_I2C_BURST_LIMITATION */
 
-               rc = tpm_tis_i2c_write(dev, TPM_DATA_FIFO(chip->locality),
+               rc = tpm_tis_i2c_write(dev, TPM_INFINEON_DATA_FIFO(chip->locality),
                                       &(buf[count]), burstcnt);
                if (rc == 0)
                        count += burstcnt;
@@ -467,7 +482,7 @@ static int tpm_tis_i2c_send(struct udevice *dev, const u8 *buf, size_t len)
        }
 
        /* Go and do it */
-       rc = tpm_tis_i2c_write(dev, TPM_STS(chip->locality), &sts, 1);
+       rc = tpm_tis_i2c_write(dev, TPM_INFINEON_STS(chip->locality), &sts, 1);
        if (rc < 0)
                return rc;
        debug("%s: done, rc=%d\n", __func__, rc);
@@ -510,7 +525,7 @@ static int tpm_tis_i2c_init(struct udevice *dev)
                return rc;
 
        /* Read four bytes from DID_VID register */
-       if (tpm_tis_i2c_read(dev, TPM_DID_VID(0), (uchar *)&vendor, 4) < 0) {
+       if (tpm_tis_i2c_read(dev, TPM_INFINEON_DID_VID(0), (uchar *)&vendor, 4) < 0) {
                tpm_tis_i2c_release_locality(dev, 0, 1);
                return -EIO;
        }
@@ -524,7 +539,7 @@ static int tpm_tis_i2c_init(struct udevice *dev)
        }
 
        if (chip->chip_type != UNKNOWN && vendor != expected_did_vid) {
-               error("Vendor id did not match! ID was %08x\n", vendor);
+               pr_err("Vendor id did not match! ID was %08x\n", vendor);
                return -ENODEV;
        }
 
@@ -568,7 +583,7 @@ static int tpm_tis_i2c_close(struct udevice *dev)
        return 0;
 }
 
-static int tpm_tis_get_desc(struct udevice *dev, char *buf, int size)
+static int tpm_tis_i2c_get_desc(struct udevice *dev, char *buf, int size)
 {
        struct tpm_chip *chip = dev_get_priv(dev);
 
@@ -600,7 +615,7 @@ static int tpm_tis_i2c_probe(struct udevice *dev)
 static const struct tpm_ops tpm_tis_i2c_ops = {
        .open           = tpm_tis_i2c_open,
        .close          = tpm_tis_i2c_close,
-       .get_desc       = tpm_tis_get_desc,
+       .get_desc       = tpm_tis_i2c_get_desc,
        .send           = tpm_tis_i2c_send,
        .recv           = tpm_tis_i2c_recv,
        .cleanup        = tpm_tis_i2c_cleanup,
@@ -618,5 +633,5 @@ U_BOOT_DRIVER(tpm_tis_i2c) = {
        .of_match = tpm_tis_i2c_ids,
        .ops    = &tpm_tis_i2c_ops,
        .probe  = tpm_tis_i2c_probe,
-       .priv_auto_alloc_size = sizeof(struct tpm_chip),
+       .priv_auto      = sizeof(struct tpm_chip),
 };