11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Copyright (C) 2004 IBM Corporation 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Authors: 51da177e4SLinus Torvalds * Leendert van Doorn <leendert@watson.ibm.com> 61da177e4SLinus Torvalds * Dave Safford <safford@watson.ibm.com> 71da177e4SLinus Torvalds * Reiner Sailer <sailer@watson.ibm.com> 81da177e4SLinus Torvalds * Kylene Hall <kjhall@us.ibm.com> 91da177e4SLinus Torvalds * 108e81cc13SKent Yoder * Maintained by: <tpmdd-devel@lists.sourceforge.net> 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * Device driver for TCG/TCPA TPM (trusted platform module). 131da177e4SLinus Torvalds * Specifications at www.trustedcomputinggroup.org 141da177e4SLinus Torvalds * 151da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 161da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License as 171da177e4SLinus Torvalds * published by the Free Software Foundation, version 2 of the 181da177e4SLinus Torvalds * License. 191da177e4SLinus Torvalds * 201da177e4SLinus Torvalds */ 211da177e4SLinus Torvalds 22faba278fSChris Wright #include <linux/platform_device.h> 23*5a0e3ad6STejun Heo #include <linux/slab.h> 241da177e4SLinus Torvalds #include "tpm.h" 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds /* National definitions */ 273122a88aSKylene Hall enum tpm_nsc_addr{ 28e1a23c66SKylene Hall TPM_NSC_IRQ = 0x07, 29e1a23c66SKylene Hall TPM_NSC_BASE0_HI = 0x60, 30e1a23c66SKylene Hall TPM_NSC_BASE0_LO = 0x61, 31e1a23c66SKylene Hall TPM_NSC_BASE1_HI = 0x62, 32e1a23c66SKylene Hall TPM_NSC_BASE1_LO = 0x63 333122a88aSKylene Hall }; 341da177e4SLinus Torvalds 353122a88aSKylene Hall enum tpm_nsc_index { 363122a88aSKylene Hall NSC_LDN_INDEX = 0x07, 373122a88aSKylene Hall NSC_SID_INDEX = 0x20, 383122a88aSKylene Hall NSC_LDC_INDEX = 0x30, 393122a88aSKylene Hall NSC_DIO_INDEX = 0x60, 403122a88aSKylene Hall NSC_CIO_INDEX = 0x62, 413122a88aSKylene Hall NSC_IRQ_INDEX = 0x70, 423122a88aSKylene Hall NSC_ITS_INDEX = 0x71 433122a88aSKylene Hall }; 441da177e4SLinus Torvalds 453122a88aSKylene Hall enum tpm_nsc_status_loc { 463122a88aSKylene Hall NSC_STATUS = 0x01, 473122a88aSKylene Hall NSC_COMMAND = 0x01, 483122a88aSKylene Hall NSC_DATA = 0x00 493122a88aSKylene Hall }; 501da177e4SLinus Torvalds 511da177e4SLinus Torvalds /* status bits */ 523122a88aSKylene Hall enum tpm_nsc_status { 533122a88aSKylene Hall NSC_STATUS_OBF = 0x01, /* output buffer full */ 543122a88aSKylene Hall NSC_STATUS_IBF = 0x02, /* input buffer full */ 553122a88aSKylene Hall NSC_STATUS_F0 = 0x04, /* F0 */ 563122a88aSKylene Hall NSC_STATUS_A2 = 0x08, /* A2 */ 573122a88aSKylene Hall NSC_STATUS_RDY = 0x10, /* ready to receive command */ 583122a88aSKylene Hall NSC_STATUS_IBR = 0x20 /* ready to receive data */ 593122a88aSKylene Hall }; 60daacdfa6SKylene Jo Hall 611da177e4SLinus Torvalds /* command bits */ 623122a88aSKylene Hall enum tpm_nsc_cmd_mode { 633122a88aSKylene Hall NSC_COMMAND_NORMAL = 0x01, /* normal mode */ 643122a88aSKylene Hall NSC_COMMAND_EOC = 0x03, 653122a88aSKylene Hall NSC_COMMAND_CANCEL = 0x22 663122a88aSKylene Hall }; 671da177e4SLinus Torvalds /* 681da177e4SLinus Torvalds * Wait for a certain status to appear 691da177e4SLinus Torvalds */ 701da177e4SLinus Torvalds static int wait_for_stat(struct tpm_chip *chip, u8 mask, u8 val, u8 * data) 711da177e4SLinus Torvalds { 72700d8bdcSNishanth Aravamudan unsigned long stop; 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds /* status immediately available check */ 7590dda520SKylene Jo Hall *data = inb(chip->vendor.base + NSC_STATUS); 761da177e4SLinus Torvalds if ((*data & mask) == val) 771da177e4SLinus Torvalds return 0; 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds /* wait for status */ 80700d8bdcSNishanth Aravamudan stop = jiffies + 10 * HZ; 811da177e4SLinus Torvalds do { 82700d8bdcSNishanth Aravamudan msleep(TPM_TIMEOUT); 8390dda520SKylene Jo Hall *data = inb(chip->vendor.base + 1); 84700d8bdcSNishanth Aravamudan if ((*data & mask) == val) 851da177e4SLinus Torvalds return 0; 861da177e4SLinus Torvalds } 87700d8bdcSNishanth Aravamudan while (time_before(jiffies, stop)); 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds return -EBUSY; 901da177e4SLinus Torvalds } 911da177e4SLinus Torvalds 921da177e4SLinus Torvalds static int nsc_wait_for_ready(struct tpm_chip *chip) 931da177e4SLinus Torvalds { 941da177e4SLinus Torvalds int status; 95700d8bdcSNishanth Aravamudan unsigned long stop; 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds /* status immediately available check */ 9890dda520SKylene Jo Hall status = inb(chip->vendor.base + NSC_STATUS); 991da177e4SLinus Torvalds if (status & NSC_STATUS_OBF) 10090dda520SKylene Jo Hall status = inb(chip->vendor.base + NSC_DATA); 1011da177e4SLinus Torvalds if (status & NSC_STATUS_RDY) 1021da177e4SLinus Torvalds return 0; 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds /* wait for status */ 105700d8bdcSNishanth Aravamudan stop = jiffies + 100; 1061da177e4SLinus Torvalds do { 107700d8bdcSNishanth Aravamudan msleep(TPM_TIMEOUT); 10890dda520SKylene Jo Hall status = inb(chip->vendor.base + NSC_STATUS); 1091da177e4SLinus Torvalds if (status & NSC_STATUS_OBF) 11090dda520SKylene Jo Hall status = inb(chip->vendor.base + NSC_DATA); 111700d8bdcSNishanth Aravamudan if (status & NSC_STATUS_RDY) 1121da177e4SLinus Torvalds return 0; 1131da177e4SLinus Torvalds } 114700d8bdcSNishanth Aravamudan while (time_before(jiffies, stop)); 1151da177e4SLinus Torvalds 116e659a3feSKylene Jo Hall dev_info(chip->dev, "wait for ready failed\n"); 1171da177e4SLinus Torvalds return -EBUSY; 1181da177e4SLinus Torvalds } 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) 1221da177e4SLinus Torvalds { 1231da177e4SLinus Torvalds u8 *buffer = buf; 1241da177e4SLinus Torvalds u8 data, *p; 1251da177e4SLinus Torvalds u32 size; 1261da177e4SLinus Torvalds __be32 *native_size; 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds if (count < 6) 1291da177e4SLinus Torvalds return -EIO; 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0) { 132e659a3feSKylene Jo Hall dev_err(chip->dev, "F0 timeout\n"); 1331da177e4SLinus Torvalds return -EIO; 1341da177e4SLinus Torvalds } 1351da177e4SLinus Torvalds if ((data = 13690dda520SKylene Jo Hall inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_NORMAL) { 137e659a3feSKylene Jo Hall dev_err(chip->dev, "not in normal mode (0x%x)\n", 1381da177e4SLinus Torvalds data); 1391da177e4SLinus Torvalds return -EIO; 1401da177e4SLinus Torvalds } 1411da177e4SLinus Torvalds 1421da177e4SLinus Torvalds /* read the whole packet */ 1431da177e4SLinus Torvalds for (p = buffer; p < &buffer[count]; p++) { 1441da177e4SLinus Torvalds if (wait_for_stat 1451da177e4SLinus Torvalds (chip, NSC_STATUS_OBF, NSC_STATUS_OBF, &data) < 0) { 146e659a3feSKylene Jo Hall dev_err(chip->dev, 1471da177e4SLinus Torvalds "OBF timeout (while reading data)\n"); 1481da177e4SLinus Torvalds return -EIO; 1491da177e4SLinus Torvalds } 1501da177e4SLinus Torvalds if (data & NSC_STATUS_F0) 1511da177e4SLinus Torvalds break; 15290dda520SKylene Jo Hall *p = inb(chip->vendor.base + NSC_DATA); 1531da177e4SLinus Torvalds } 1541da177e4SLinus Torvalds 155daacdfa6SKylene Jo Hall if ((data & NSC_STATUS_F0) == 0 && 156daacdfa6SKylene Jo Hall (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0)) { 157e659a3feSKylene Jo Hall dev_err(chip->dev, "F0 not set\n"); 1581da177e4SLinus Torvalds return -EIO; 1591da177e4SLinus Torvalds } 16090dda520SKylene Jo Hall if ((data = inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_EOC) { 161e659a3feSKylene Jo Hall dev_err(chip->dev, 1621da177e4SLinus Torvalds "expected end of command(0x%x)\n", data); 1631da177e4SLinus Torvalds return -EIO; 1641da177e4SLinus Torvalds } 1651da177e4SLinus Torvalds 1661da177e4SLinus Torvalds native_size = (__force __be32 *) (buf + 2); 1671da177e4SLinus Torvalds size = be32_to_cpu(*native_size); 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds if (count < size) 1701da177e4SLinus Torvalds return -EIO; 1711da177e4SLinus Torvalds 1721da177e4SLinus Torvalds return size; 1731da177e4SLinus Torvalds } 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count) 1761da177e4SLinus Torvalds { 1771da177e4SLinus Torvalds u8 data; 1781da177e4SLinus Torvalds int i; 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds /* 1811da177e4SLinus Torvalds * If we hit the chip with back to back commands it locks up 1821da177e4SLinus Torvalds * and never set IBF. Hitting it with this "hammer" seems to 1831da177e4SLinus Torvalds * fix it. Not sure why this is needed, we followed the flow 1841da177e4SLinus Torvalds * chart in the manual to the letter. 1851da177e4SLinus Torvalds */ 18690dda520SKylene Jo Hall outb(NSC_COMMAND_CANCEL, chip->vendor.base + NSC_COMMAND); 1871da177e4SLinus Torvalds 1881da177e4SLinus Torvalds if (nsc_wait_for_ready(chip) != 0) 1891da177e4SLinus Torvalds return -EIO; 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { 192e659a3feSKylene Jo Hall dev_err(chip->dev, "IBF timeout\n"); 1931da177e4SLinus Torvalds return -EIO; 1941da177e4SLinus Torvalds } 1951da177e4SLinus Torvalds 19690dda520SKylene Jo Hall outb(NSC_COMMAND_NORMAL, chip->vendor.base + NSC_COMMAND); 1971da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) { 198e659a3feSKylene Jo Hall dev_err(chip->dev, "IBR timeout\n"); 1991da177e4SLinus Torvalds return -EIO; 2001da177e4SLinus Torvalds } 2011da177e4SLinus Torvalds 2021da177e4SLinus Torvalds for (i = 0; i < count; i++) { 2031da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { 204e659a3feSKylene Jo Hall dev_err(chip->dev, 2051da177e4SLinus Torvalds "IBF timeout (while writing data)\n"); 2061da177e4SLinus Torvalds return -EIO; 2071da177e4SLinus Torvalds } 20890dda520SKylene Jo Hall outb(buf[i], chip->vendor.base + NSC_DATA); 2091da177e4SLinus Torvalds } 2101da177e4SLinus Torvalds 2111da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { 212e659a3feSKylene Jo Hall dev_err(chip->dev, "IBF timeout\n"); 2131da177e4SLinus Torvalds return -EIO; 2141da177e4SLinus Torvalds } 21590dda520SKylene Jo Hall outb(NSC_COMMAND_EOC, chip->vendor.base + NSC_COMMAND); 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds return count; 2181da177e4SLinus Torvalds } 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds static void tpm_nsc_cancel(struct tpm_chip *chip) 2211da177e4SLinus Torvalds { 22290dda520SKylene Jo Hall outb(NSC_COMMAND_CANCEL, chip->vendor.base + NSC_COMMAND); 2231da177e4SLinus Torvalds } 2241da177e4SLinus Torvalds 225b4ed3e3cSKylene Jo Hall static u8 tpm_nsc_status(struct tpm_chip *chip) 226b4ed3e3cSKylene Jo Hall { 22790dda520SKylene Jo Hall return inb(chip->vendor.base + NSC_STATUS); 228b4ed3e3cSKylene Jo Hall } 229b4ed3e3cSKylene Jo Hall 23062322d25SArjan van de Ven static const struct file_operations nsc_ops = { 2311da177e4SLinus Torvalds .owner = THIS_MODULE, 2321da177e4SLinus Torvalds .llseek = no_llseek, 2331da177e4SLinus Torvalds .open = tpm_open, 2341da177e4SLinus Torvalds .read = tpm_read, 2351da177e4SLinus Torvalds .write = tpm_write, 2361da177e4SLinus Torvalds .release = tpm_release, 2371da177e4SLinus Torvalds }; 2381da177e4SLinus Torvalds 2396659ca2aSKylene Hall static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL); 2406659ca2aSKylene Hall static DEVICE_ATTR(pcrs, S_IRUGO, tpm_show_pcrs, NULL); 2416659ca2aSKylene Hall static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps, NULL); 2426659ca2aSKylene Hall static DEVICE_ATTR(cancel, S_IWUSR|S_IWGRP, NULL, tpm_store_cancel); 2436659ca2aSKylene Hall 2446659ca2aSKylene Hall static struct attribute * nsc_attrs[] = { 2456659ca2aSKylene Hall &dev_attr_pubek.attr, 2466659ca2aSKylene Hall &dev_attr_pcrs.attr, 2476659ca2aSKylene Hall &dev_attr_caps.attr, 2486659ca2aSKylene Hall &dev_attr_cancel.attr, 249874ec33fSRandy Dunlap NULL, 2506659ca2aSKylene Hall }; 2516659ca2aSKylene Hall 2526659ca2aSKylene Hall static struct attribute_group nsc_attr_grp = { .attrs = nsc_attrs }; 2536659ca2aSKylene Hall 254e0dd03caSKylene Jo Hall static const struct tpm_vendor_specific tpm_nsc = { 2551da177e4SLinus Torvalds .recv = tpm_nsc_recv, 2561da177e4SLinus Torvalds .send = tpm_nsc_send, 2571da177e4SLinus Torvalds .cancel = tpm_nsc_cancel, 258b4ed3e3cSKylene Jo Hall .status = tpm_nsc_status, 2591da177e4SLinus Torvalds .req_complete_mask = NSC_STATUS_OBF, 2601da177e4SLinus Torvalds .req_complete_val = NSC_STATUS_OBF, 261d9e5b6bfSKylene Hall .req_canceled = NSC_STATUS_RDY, 2626659ca2aSKylene Hall .attr_group = &nsc_attr_grp, 2631da177e4SLinus Torvalds .miscdev = { .fops = &nsc_ops, }, 2641da177e4SLinus Torvalds }; 2651da177e4SLinus Torvalds 266570302a3SKylene Jo Hall static struct platform_device *pdev = NULL; 267570302a3SKylene Jo Hall 2684821cd11SSam Ravnborg static void tpm_nsc_remove(struct device *dev) 269570302a3SKylene Jo Hall { 270570302a3SKylene Jo Hall struct tpm_chip *chip = dev_get_drvdata(dev); 271570302a3SKylene Jo Hall if ( chip ) { 27290dda520SKylene Jo Hall release_region(chip->vendor.base, 2); 273570302a3SKylene Jo Hall tpm_remove_hardware(chip->dev); 274570302a3SKylene Jo Hall } 275570302a3SKylene Jo Hall } 276570302a3SKylene Jo Hall 27709f50c95SDavid Smith static int tpm_nsc_suspend(struct platform_device *dev, pm_message_t msg) 27809f50c95SDavid Smith { 27909f50c95SDavid Smith return tpm_pm_suspend(&dev->dev, msg); 28009f50c95SDavid Smith } 28109f50c95SDavid Smith 28209f50c95SDavid Smith static int tpm_nsc_resume(struct platform_device *dev) 28309f50c95SDavid Smith { 28409f50c95SDavid Smith return tpm_pm_resume(&dev->dev); 28509f50c95SDavid Smith } 28609f50c95SDavid Smith 28709f50c95SDavid Smith static struct platform_driver nsc_drv = { 28809f50c95SDavid Smith .suspend = tpm_nsc_suspend, 28909f50c95SDavid Smith .resume = tpm_nsc_resume, 29009f50c95SDavid Smith .driver = { 291570302a3SKylene Jo Hall .name = "tpm_nsc", 292570302a3SKylene Jo Hall .owner = THIS_MODULE, 29309f50c95SDavid Smith }, 294570302a3SKylene Jo Hall }; 295570302a3SKylene Jo Hall 296570302a3SKylene Jo Hall static int __init init_nsc(void) 2971da177e4SLinus Torvalds { 2981da177e4SLinus Torvalds int rc = 0; 299f33d9bd5SJeff Garzik int lo, hi, err; 300daacdfa6SKylene Jo Hall int nscAddrBase = TPM_ADDR; 301e0dd03caSKylene Jo Hall struct tpm_chip *chip; 302e0dd03caSKylene Jo Hall unsigned long base; 303daacdfa6SKylene Jo Hall 3041da177e4SLinus Torvalds /* verify that it is a National part (SID) */ 305daacdfa6SKylene Jo Hall if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) { 306daacdfa6SKylene Jo Hall nscAddrBase = (tpm_read_index(TPM_SUPERIO_ADDR, 0x2C)<<8)| 307daacdfa6SKylene Jo Hall (tpm_read_index(TPM_SUPERIO_ADDR, 0x2B)&0xFE); 308570302a3SKylene Jo Hall if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6) 309570302a3SKylene Jo Hall return -ENODEV; 310daacdfa6SKylene Jo Hall } 311daacdfa6SKylene Jo Hall 31209f50c95SDavid Smith err = platform_driver_register(&nsc_drv); 313f33d9bd5SJeff Garzik if (err) 314f33d9bd5SJeff Garzik return err; 315e2a8f7a1SKylene Jo Hall 316daacdfa6SKylene Jo Hall hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI); 317daacdfa6SKylene Jo Hall lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO); 318e0dd03caSKylene Jo Hall base = (hi<<8) | lo; 3191da177e4SLinus Torvalds 320570302a3SKylene Jo Hall /* enable the DPM module */ 321570302a3SKylene Jo Hall tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01); 322570302a3SKylene Jo Hall 32309f50c95SDavid Smith pdev = platform_device_alloc("tpm_nscl0", -1); 324e2a8f7a1SKylene Jo Hall if (!pdev) { 325e2a8f7a1SKylene Jo Hall rc = -ENOMEM; 326e2a8f7a1SKylene Jo Hall goto err_unreg_drv; 327e2a8f7a1SKylene Jo Hall } 328570302a3SKylene Jo Hall 329570302a3SKylene Jo Hall pdev->num_resources = 0; 33009f50c95SDavid Smith pdev->dev.driver = &nsc_drv.driver; 331570302a3SKylene Jo Hall pdev->dev.release = tpm_nsc_remove; 332570302a3SKylene Jo Hall 333e2a8f7a1SKylene Jo Hall if ((rc = platform_device_register(pdev)) < 0) 334e2a8f7a1SKylene Jo Hall goto err_free_dev; 335570302a3SKylene Jo Hall 336e0dd03caSKylene Jo Hall if (request_region(base, 2, "tpm_nsc0") == NULL ) { 337e2a8f7a1SKylene Jo Hall rc = -EBUSY; 338e2a8f7a1SKylene Jo Hall goto err_unreg_dev; 339570302a3SKylene Jo Hall } 340570302a3SKylene Jo Hall 341e0dd03caSKylene Jo Hall if (!(chip = tpm_register_hardware(&pdev->dev, &tpm_nsc))) { 342e0dd03caSKylene Jo Hall rc = -ENODEV; 343e2a8f7a1SKylene Jo Hall goto err_rel_reg; 344e0dd03caSKylene Jo Hall } 345570302a3SKylene Jo Hall 346570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC TPM detected\n"); 347570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3481da177e4SLinus Torvalds "NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n", 349daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x07), tpm_read_index(nscAddrBase,0x20), 350daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x27)); 351570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3521da177e4SLinus Torvalds "NSC SIOCF1 0x%x SIOCF5 0x%x SIOCF6 0x%x SIOCF8 0x%x\n", 353daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x21), tpm_read_index(nscAddrBase,0x25), 354daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x26), tpm_read_index(nscAddrBase,0x28)); 355570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC IO Base0 0x%x\n", 356daacdfa6SKylene Jo Hall (tpm_read_index(nscAddrBase,0x60) << 8) | tpm_read_index(nscAddrBase,0x61)); 357570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC IO Base1 0x%x\n", 358daacdfa6SKylene Jo Hall (tpm_read_index(nscAddrBase,0x62) << 8) | tpm_read_index(nscAddrBase,0x63)); 359570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC Interrupt number and wakeup 0x%x\n", 360daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x70)); 361570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC IRQ type select 0x%x\n", 362daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x71)); 363570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3641da177e4SLinus Torvalds "NSC DMA channel select0 0x%x, select1 0x%x\n", 365daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x74), tpm_read_index(nscAddrBase,0x75)); 366570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3671da177e4SLinus Torvalds "NSC Config " 3681da177e4SLinus Torvalds "0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", 369daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF0), tpm_read_index(nscAddrBase,0xF1), 370daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF2), tpm_read_index(nscAddrBase,0xF3), 371daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF4), tpm_read_index(nscAddrBase,0xF5), 372daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF6), tpm_read_index(nscAddrBase,0xF7), 373daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF8), tpm_read_index(nscAddrBase,0xF9)); 3741da177e4SLinus Torvalds 375570302a3SKylene Jo Hall dev_info(&pdev->dev, 376daacdfa6SKylene Jo Hall "NSC TPM revision %d\n", 377daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase, 0x27) & 0x1F); 3781da177e4SLinus Torvalds 379e0dd03caSKylene Jo Hall chip->vendor.base = base; 380e0dd03caSKylene Jo Hall 3811da177e4SLinus Torvalds return 0; 382e2a8f7a1SKylene Jo Hall 383e2a8f7a1SKylene Jo Hall err_rel_reg: 384e0dd03caSKylene Jo Hall release_region(base, 2); 385e2a8f7a1SKylene Jo Hall err_unreg_dev: 386e2a8f7a1SKylene Jo Hall platform_device_unregister(pdev); 387e2a8f7a1SKylene Jo Hall err_free_dev: 388e2a8f7a1SKylene Jo Hall kfree(pdev); 389e2a8f7a1SKylene Jo Hall err_unreg_drv: 39009f50c95SDavid Smith platform_driver_unregister(&nsc_drv); 391e2a8f7a1SKylene Jo Hall return rc; 3921da177e4SLinus Torvalds } 3931da177e4SLinus Torvalds 3941da177e4SLinus Torvalds static void __exit cleanup_nsc(void) 3951da177e4SLinus Torvalds { 396570302a3SKylene Jo Hall if (pdev) { 397570302a3SKylene Jo Hall tpm_nsc_remove(&pdev->dev); 398570302a3SKylene Jo Hall platform_device_unregister(pdev); 399570302a3SKylene Jo Hall kfree(pdev); 400570302a3SKylene Jo Hall pdev = NULL; 401570302a3SKylene Jo Hall } 402570302a3SKylene Jo Hall 40309f50c95SDavid Smith platform_driver_unregister(&nsc_drv); 4041da177e4SLinus Torvalds } 4051da177e4SLinus Torvalds 4061da177e4SLinus Torvalds module_init(init_nsc); 4071da177e4SLinus Torvalds module_exit(cleanup_nsc); 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvalds MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)"); 4101da177e4SLinus Torvalds MODULE_DESCRIPTION("TPM Driver"); 4111da177e4SLinus Torvalds MODULE_VERSION("2.0"); 4121da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 413