Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (C) 2004 IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Leendert van Doorn <leendert@watson.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Dave Safford <safford@watson.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Reiner Sailer <sailer@watson.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * Kylene Hall <kjhall@us.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * Copyright (C) 2013 Obsidian Research Corp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * sysfs filesystem inspection interface to the TPM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include "tpm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) struct tpm_readpubek_out {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	u8 algorithm[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	u8 encscheme[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	u8 sigscheme[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	__be32 paramsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	u8 parameters[12];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	__be32 keysize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	u8 modulus[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	u8 checksum[20];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define READ_PUBEK_RESULT_MIN_BODY_SIZE (28 + 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define TPM_ORD_READPUBEK 124
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) static ssize_t pubek_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 			  char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	struct tpm_buf tpm_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	struct tpm_readpubek_out *out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	char *str = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	char anti_replay[20];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	memset(&anti_replay, 0, sizeof(anti_replay));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	if (tpm_try_get_ops(chip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	if (tpm_buf_init(&tpm_buf, TPM_TAG_RQU_COMMAND, TPM_ORD_READPUBEK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		goto out_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	tpm_buf_append(&tpm_buf, anti_replay, sizeof(anti_replay));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	if (tpm_transmit_cmd(chip, &tpm_buf, READ_PUBEK_RESULT_MIN_BODY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 			     "attempting to read the PUBEK"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		goto out_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	out = (struct tpm_readpubek_out *)&tpm_buf.data[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	str +=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	    sprintf(str,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		    "Algorithm: %4ph\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		    "Encscheme: %2ph\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		    "Sigscheme: %2ph\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		    "Parameters: %12ph\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		    "Modulus length: %d\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		    "Modulus:\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		    out->algorithm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		    out->encscheme,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		    out->sigscheme,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		    out->parameters,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		    be32_to_cpu(out->keysize));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	for (i = 0; i < 256; i += 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		str += sprintf(str, "%16ph\n", &out->modulus[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) out_buf:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	tpm_buf_destroy(&tpm_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) out_ops:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	tpm_put_ops(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	return str - buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) static DEVICE_ATTR_RO(pubek);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) static ssize_t pcrs_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 			 char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	cap_t cap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	u8 digest[TPM_DIGEST_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	u32 i, j, num_pcrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	char *str = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	if (tpm_try_get_ops(chip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	if (tpm1_getcap(chip, TPM_CAP_PROP_PCR, &cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 			"attempting to determine the number of PCRS",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			sizeof(cap.num_pcrs))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		tpm_put_ops(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	num_pcrs = be32_to_cpu(cap.num_pcrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	for (i = 0; i < num_pcrs; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		if (tpm1_pcr_read(chip, i, digest)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 			str = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		str += sprintf(str, "PCR-%02d: ", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		for (j = 0; j < TPM_DIGEST_SIZE; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 			str += sprintf(str, "%02X ", digest[j]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		str += sprintf(str, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	tpm_put_ops(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	return str - buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static DEVICE_ATTR_RO(pcrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static ssize_t enabled_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		     char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	ssize_t rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	cap_t cap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (tpm_try_get_ops(chip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	if (tpm1_getcap(chip, TPM_CAP_FLAG_PERM, &cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 			"attempting to determine the permanent enabled state",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 			sizeof(cap.perm_flags)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		goto out_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	rc = sprintf(buf, "%d\n", !cap.perm_flags.disable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) out_ops:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	tpm_put_ops(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static DEVICE_ATTR_RO(enabled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static ssize_t active_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		    char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	ssize_t rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	cap_t cap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	if (tpm_try_get_ops(chip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (tpm1_getcap(chip, TPM_CAP_FLAG_PERM, &cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 			"attempting to determine the permanent active state",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 			sizeof(cap.perm_flags)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		goto out_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	rc = sprintf(buf, "%d\n", !cap.perm_flags.deactivated);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) out_ops:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	tpm_put_ops(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static DEVICE_ATTR_RO(active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static ssize_t owned_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 			  char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	ssize_t rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	cap_t cap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	if (tpm_try_get_ops(chip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	if (tpm1_getcap(to_tpm_chip(dev), TPM_CAP_PROP_OWNER, &cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 			"attempting to determine the owner state",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			sizeof(cap.owned)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		goto out_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	rc = sprintf(buf, "%d\n", cap.owned);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) out_ops:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	tpm_put_ops(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static DEVICE_ATTR_RO(owned);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) static ssize_t temp_deactivated_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 				     struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	ssize_t rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	cap_t cap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (tpm_try_get_ops(chip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	if (tpm1_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_VOL, &cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 			"attempting to determine the temporary state",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 			sizeof(cap.stclear_flags)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		goto out_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	rc = sprintf(buf, "%d\n", cap.stclear_flags.deactivated);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) out_ops:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	tpm_put_ops(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static DEVICE_ATTR_RO(temp_deactivated);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static ssize_t caps_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			 char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	struct tpm1_version *version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	ssize_t rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	char *str = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	cap_t cap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	if (tpm_try_get_ops(chip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	if (tpm1_getcap(chip, TPM_CAP_PROP_MANUFACTURER, &cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			"attempting to determine the manufacturer",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 			sizeof(cap.manufacturer_id)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		goto out_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	str += sprintf(str, "Manufacturer: 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		       be32_to_cpu(cap.manufacturer_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	/* TPM 1.2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	if (!tpm1_getcap(chip, TPM_CAP_VERSION_1_2, &cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 			 "attempting to determine the 1.2 version",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 			 sizeof(cap.version2))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		version = &cap.version2.version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		goto out_print;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	/* TPM 1.1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	if (tpm1_getcap(chip, TPM_CAP_VERSION_1_1, &cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 			"attempting to determine the 1.1 version",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 			sizeof(cap.version1))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		goto out_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	version = &cap.version1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) out_print:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	str += sprintf(str,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		       "TCG version: %d.%d\nFirmware version: %d.%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		       version->major, version->minor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		       version->rev_major, version->rev_minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	rc = str - buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) out_ops:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	tpm_put_ops(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static DEVICE_ATTR_RO(caps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static ssize_t cancel_store(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 			    const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	if (tpm_try_get_ops(chip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	chip->ops->cancel(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	tpm_put_ops(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) static DEVICE_ATTR_WO(cancel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) static ssize_t durations_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 			      char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	if (chip->duration[TPM_LONG] == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	return sprintf(buf, "%d %d %d [%s]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		       jiffies_to_usecs(chip->duration[TPM_SHORT]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 		       jiffies_to_usecs(chip->duration[TPM_MEDIUM]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		       jiffies_to_usecs(chip->duration[TPM_LONG]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		       chip->duration_adjusted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		       ? "adjusted" : "original");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static DEVICE_ATTR_RO(durations);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static ssize_t timeouts_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 			     char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	return sprintf(buf, "%d %d %d %d [%s]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		       jiffies_to_usecs(chip->timeout_a),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		       jiffies_to_usecs(chip->timeout_b),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		       jiffies_to_usecs(chip->timeout_c),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		       jiffies_to_usecs(chip->timeout_d),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 		       chip->timeout_adjusted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 		       ? "adjusted" : "original");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) static DEVICE_ATTR_RO(timeouts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) static ssize_t tpm_version_major_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 				  struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	struct tpm_chip *chip = to_tpm_chip(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	return sprintf(buf, "%s\n", chip->flags & TPM_CHIP_FLAG_TPM2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		       ? "2" : "1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static DEVICE_ATTR_RO(tpm_version_major);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static struct attribute *tpm1_dev_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	&dev_attr_pubek.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	&dev_attr_pcrs.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	&dev_attr_enabled.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	&dev_attr_active.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	&dev_attr_owned.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	&dev_attr_temp_deactivated.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	&dev_attr_caps.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	&dev_attr_cancel.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	&dev_attr_durations.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	&dev_attr_timeouts.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	&dev_attr_tpm_version_major.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static struct attribute *tpm2_dev_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	&dev_attr_tpm_version_major.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static const struct attribute_group tpm1_dev_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	.attrs = tpm1_dev_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static const struct attribute_group tpm2_dev_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	.attrs = tpm2_dev_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) void tpm_sysfs_add_device(struct tpm_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	WARN_ON(chip->groups_cnt != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	if (chip->flags & TPM_CHIP_FLAG_TPM2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		chip->groups[chip->groups_cnt++] = &tpm2_dev_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 		chip->groups[chip->groups_cnt++] = &tpm1_dev_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }