1 // SPDX-License-Identifier: GPL-2.0-or-later
6  *	Kent Yoder <key@linux.vnet.ibm.com>
7  *	Seiji Munetoh <munetoh@jp.ibm.com>
8  *	Stefan Berger <stefanb@us.ibm.com>
9  *	Reiner Sailer <sailer@watson.ibm.com>
10  *	Kylene Hall <kjhall@us.ibm.com>
11  *	Nayna Jain <nayna@linux.vnet.ibm.com>
29 	struct seq_file *seq;  in tpm_bios_measurements_open()  local
35 	if (!inode->i_private) {  in tpm_bios_measurements_open()
37 		return -ENODEV;  in tpm_bios_measurements_open()
39 	chip_seqops = (struct tpm_chip_seqops *)inode->i_private;  in tpm_bios_measurements_open()
40 	seqops = chip_seqops->seqops;  in tpm_bios_measurements_open()
41 	chip = chip_seqops->chip;  in tpm_bios_measurements_open()
42 	get_device(&chip->dev);  in tpm_bios_measurements_open()
45 	/* now register seq file */  in tpm_bios_measurements_open()
48 		seq = file->private_data;  in tpm_bios_measurements_open()
49 		seq->private = chip;  in tpm_bios_measurements_open()
58 	struct seq_file *seq = (struct seq_file *)file->private_data;  in tpm_bios_measurements_release()  local
59 	struct tpm_chip *chip = (struct tpm_chip *)seq->private;  in tpm_bios_measurements_release()
61 	put_device(&chip->dev);  in tpm_bios_measurements_release()
78 	if (chip->log.bios_event_log != NULL) {  in tpm_read_log()
79 		dev_dbg(&chip->dev,  in tpm_read_log()
80 			"%s: ERROR - event log already initialized\n",  in tpm_read_log()
82 		return -EFAULT;  in tpm_read_log()
86 	if (rc != -ENODEV)  in tpm_read_log()
90 	if (rc != -ENODEV)  in tpm_read_log()
97  * tpm_bios_log_setup() - Read the event log from the firmware
105 	const char *name = dev_name(&chip->dev);  in tpm_bios_log_setup()
110 	if (chip->flags & TPM_CHIP_FLAG_VIRTUAL)  in tpm_bios_log_setup()
119 	chip->bios_dir[cnt] = securityfs_create_dir(name, NULL);  in tpm_bios_log_setup()
123 	if (IS_ERR(chip->bios_dir[cnt]))  in tpm_bios_log_setup()
127 	chip->bin_log_seqops.chip = chip;  in tpm_bios_log_setup()
129 		chip->bin_log_seqops.seqops =  in tpm_bios_log_setup()
132 		chip->bin_log_seqops.seqops =  in tpm_bios_log_setup()
136 	chip->bios_dir[cnt] =  in tpm_bios_log_setup()
138 				   0440, chip->bios_dir[0],  in tpm_bios_log_setup()
139 				   (void *)&chip->bin_log_seqops,  in tpm_bios_log_setup()
141 	if (IS_ERR(chip->bios_dir[cnt]))  in tpm_bios_log_setup()
145 	if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) {  in tpm_bios_log_setup()
147 		chip->ascii_log_seqops.chip = chip;  in tpm_bios_log_setup()
148 		chip->ascii_log_seqops.seqops =  in tpm_bios_log_setup()
151 		chip->bios_dir[cnt] =  in tpm_bios_log_setup()
153 					       0440, chip->bios_dir[0],  in tpm_bios_log_setup()
154 					       (void *)&chip->ascii_log_seqops,  in tpm_bios_log_setup()
156 		if (IS_ERR(chip->bios_dir[cnt]))  in tpm_bios_log_setup()
164 	chip->bios_dir[cnt] = NULL;  in tpm_bios_log_setup()
180 	for (i = (TPM_NUM_EVENT_LOG_FILES - 1); i >= 0; i--) {  in tpm_bios_log_teardown()
181 		if (chip->bios_dir[i]) {  in tpm_bios_log_teardown()
182 			inode = d_inode(chip->bios_dir[i]);  in tpm_bios_log_teardown()
184 			inode->i_private = NULL;  in tpm_bios_log_teardown()
186 			securityfs_remove(chip->bios_dir[i]);  in tpm_bios_log_teardown()