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 * 101da177e4SLinus Torvalds * 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> 231da177e4SLinus Torvalds #include "tpm.h" 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds /* National definitions */ 263122a88aSKylene Hall enum tpm_nsc_addr{ 27e1a23c66SKylene Hall TPM_NSC_IRQ = 0x07, 28e1a23c66SKylene Hall TPM_NSC_BASE0_HI = 0x60, 29e1a23c66SKylene Hall TPM_NSC_BASE0_LO = 0x61, 30e1a23c66SKylene Hall TPM_NSC_BASE1_HI = 0x62, 31e1a23c66SKylene Hall TPM_NSC_BASE1_LO = 0x63 323122a88aSKylene Hall }; 331da177e4SLinus Torvalds 343122a88aSKylene Hall enum tpm_nsc_index { 353122a88aSKylene Hall NSC_LDN_INDEX = 0x07, 363122a88aSKylene Hall NSC_SID_INDEX = 0x20, 373122a88aSKylene Hall NSC_LDC_INDEX = 0x30, 383122a88aSKylene Hall NSC_DIO_INDEX = 0x60, 393122a88aSKylene Hall NSC_CIO_INDEX = 0x62, 403122a88aSKylene Hall NSC_IRQ_INDEX = 0x70, 413122a88aSKylene Hall NSC_ITS_INDEX = 0x71 423122a88aSKylene Hall }; 431da177e4SLinus Torvalds 443122a88aSKylene Hall enum tpm_nsc_status_loc { 453122a88aSKylene Hall NSC_STATUS = 0x01, 463122a88aSKylene Hall NSC_COMMAND = 0x01, 473122a88aSKylene Hall NSC_DATA = 0x00 483122a88aSKylene Hall }; 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds /* status bits */ 513122a88aSKylene Hall enum tpm_nsc_status { 523122a88aSKylene Hall NSC_STATUS_OBF = 0x01, /* output buffer full */ 533122a88aSKylene Hall NSC_STATUS_IBF = 0x02, /* input buffer full */ 543122a88aSKylene Hall NSC_STATUS_F0 = 0x04, /* F0 */ 553122a88aSKylene Hall NSC_STATUS_A2 = 0x08, /* A2 */ 563122a88aSKylene Hall NSC_STATUS_RDY = 0x10, /* ready to receive command */ 573122a88aSKylene Hall NSC_STATUS_IBR = 0x20 /* ready to receive data */ 583122a88aSKylene Hall }; 59daacdfa6SKylene Jo Hall 601da177e4SLinus Torvalds /* command bits */ 613122a88aSKylene Hall enum tpm_nsc_cmd_mode { 623122a88aSKylene Hall NSC_COMMAND_NORMAL = 0x01, /* normal mode */ 633122a88aSKylene Hall NSC_COMMAND_EOC = 0x03, 643122a88aSKylene Hall NSC_COMMAND_CANCEL = 0x22 653122a88aSKylene Hall }; 661da177e4SLinus Torvalds /* 671da177e4SLinus Torvalds * Wait for a certain status to appear 681da177e4SLinus Torvalds */ 691da177e4SLinus Torvalds static int wait_for_stat(struct tpm_chip *chip, u8 mask, u8 val, u8 * data) 701da177e4SLinus Torvalds { 71700d8bdcSNishanth Aravamudan unsigned long stop; 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds /* status immediately available check */ 74*90dda520SKylene Jo Hall *data = inb(chip->vendor.base + NSC_STATUS); 751da177e4SLinus Torvalds if ((*data & mask) == val) 761da177e4SLinus Torvalds return 0; 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds /* wait for status */ 79700d8bdcSNishanth Aravamudan stop = jiffies + 10 * HZ; 801da177e4SLinus Torvalds do { 81700d8bdcSNishanth Aravamudan msleep(TPM_TIMEOUT); 82*90dda520SKylene Jo Hall *data = inb(chip->vendor.base + 1); 83700d8bdcSNishanth Aravamudan if ((*data & mask) == val) 841da177e4SLinus Torvalds return 0; 851da177e4SLinus Torvalds } 86700d8bdcSNishanth Aravamudan while (time_before(jiffies, stop)); 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds return -EBUSY; 891da177e4SLinus Torvalds } 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds static int nsc_wait_for_ready(struct tpm_chip *chip) 921da177e4SLinus Torvalds { 931da177e4SLinus Torvalds int status; 94700d8bdcSNishanth Aravamudan unsigned long stop; 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds /* status immediately available check */ 97*90dda520SKylene Jo Hall status = inb(chip->vendor.base + NSC_STATUS); 981da177e4SLinus Torvalds if (status & NSC_STATUS_OBF) 99*90dda520SKylene Jo Hall status = inb(chip->vendor.base + NSC_DATA); 1001da177e4SLinus Torvalds if (status & NSC_STATUS_RDY) 1011da177e4SLinus Torvalds return 0; 1021da177e4SLinus Torvalds 1031da177e4SLinus Torvalds /* wait for status */ 104700d8bdcSNishanth Aravamudan stop = jiffies + 100; 1051da177e4SLinus Torvalds do { 106700d8bdcSNishanth Aravamudan msleep(TPM_TIMEOUT); 107*90dda520SKylene Jo Hall status = inb(chip->vendor.base + NSC_STATUS); 1081da177e4SLinus Torvalds if (status & NSC_STATUS_OBF) 109*90dda520SKylene Jo Hall status = inb(chip->vendor.base + NSC_DATA); 110700d8bdcSNishanth Aravamudan if (status & NSC_STATUS_RDY) 1111da177e4SLinus Torvalds return 0; 1121da177e4SLinus Torvalds } 113700d8bdcSNishanth Aravamudan while (time_before(jiffies, stop)); 1141da177e4SLinus Torvalds 115e659a3feSKylene Jo Hall dev_info(chip->dev, "wait for ready failed\n"); 1161da177e4SLinus Torvalds return -EBUSY; 1171da177e4SLinus Torvalds } 1181da177e4SLinus Torvalds 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) 1211da177e4SLinus Torvalds { 1221da177e4SLinus Torvalds u8 *buffer = buf; 1231da177e4SLinus Torvalds u8 data, *p; 1241da177e4SLinus Torvalds u32 size; 1251da177e4SLinus Torvalds __be32 *native_size; 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvalds if (count < 6) 1281da177e4SLinus Torvalds return -EIO; 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0) { 131e659a3feSKylene Jo Hall dev_err(chip->dev, "F0 timeout\n"); 1321da177e4SLinus Torvalds return -EIO; 1331da177e4SLinus Torvalds } 1341da177e4SLinus Torvalds if ((data = 135*90dda520SKylene Jo Hall inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_NORMAL) { 136e659a3feSKylene Jo Hall dev_err(chip->dev, "not in normal mode (0x%x)\n", 1371da177e4SLinus Torvalds data); 1381da177e4SLinus Torvalds return -EIO; 1391da177e4SLinus Torvalds } 1401da177e4SLinus Torvalds 1411da177e4SLinus Torvalds /* read the whole packet */ 1421da177e4SLinus Torvalds for (p = buffer; p < &buffer[count]; p++) { 1431da177e4SLinus Torvalds if (wait_for_stat 1441da177e4SLinus Torvalds (chip, NSC_STATUS_OBF, NSC_STATUS_OBF, &data) < 0) { 145e659a3feSKylene Jo Hall dev_err(chip->dev, 1461da177e4SLinus Torvalds "OBF timeout (while reading data)\n"); 1471da177e4SLinus Torvalds return -EIO; 1481da177e4SLinus Torvalds } 1491da177e4SLinus Torvalds if (data & NSC_STATUS_F0) 1501da177e4SLinus Torvalds break; 151*90dda520SKylene Jo Hall *p = inb(chip->vendor.base + NSC_DATA); 1521da177e4SLinus Torvalds } 1531da177e4SLinus Torvalds 154daacdfa6SKylene Jo Hall if ((data & NSC_STATUS_F0) == 0 && 155daacdfa6SKylene Jo Hall (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0)) { 156e659a3feSKylene Jo Hall dev_err(chip->dev, "F0 not set\n"); 1571da177e4SLinus Torvalds return -EIO; 1581da177e4SLinus Torvalds } 159*90dda520SKylene Jo Hall if ((data = inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_EOC) { 160e659a3feSKylene Jo Hall dev_err(chip->dev, 1611da177e4SLinus Torvalds "expected end of command(0x%x)\n", data); 1621da177e4SLinus Torvalds return -EIO; 1631da177e4SLinus Torvalds } 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvalds native_size = (__force __be32 *) (buf + 2); 1661da177e4SLinus Torvalds size = be32_to_cpu(*native_size); 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds if (count < size) 1691da177e4SLinus Torvalds return -EIO; 1701da177e4SLinus Torvalds 1711da177e4SLinus Torvalds return size; 1721da177e4SLinus Torvalds } 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count) 1751da177e4SLinus Torvalds { 1761da177e4SLinus Torvalds u8 data; 1771da177e4SLinus Torvalds int i; 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds /* 1801da177e4SLinus Torvalds * If we hit the chip with back to back commands it locks up 1811da177e4SLinus Torvalds * and never set IBF. Hitting it with this "hammer" seems to 1821da177e4SLinus Torvalds * fix it. Not sure why this is needed, we followed the flow 1831da177e4SLinus Torvalds * chart in the manual to the letter. 1841da177e4SLinus Torvalds */ 185*90dda520SKylene Jo Hall outb(NSC_COMMAND_CANCEL, chip->vendor.base + NSC_COMMAND); 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds if (nsc_wait_for_ready(chip) != 0) 1881da177e4SLinus Torvalds return -EIO; 1891da177e4SLinus Torvalds 1901da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { 191e659a3feSKylene Jo Hall dev_err(chip->dev, "IBF timeout\n"); 1921da177e4SLinus Torvalds return -EIO; 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds 195*90dda520SKylene Jo Hall outb(NSC_COMMAND_NORMAL, chip->vendor.base + NSC_COMMAND); 1961da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) { 197e659a3feSKylene Jo Hall dev_err(chip->dev, "IBR timeout\n"); 1981da177e4SLinus Torvalds return -EIO; 1991da177e4SLinus Torvalds } 2001da177e4SLinus Torvalds 2011da177e4SLinus Torvalds for (i = 0; i < count; i++) { 2021da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { 203e659a3feSKylene Jo Hall dev_err(chip->dev, 2041da177e4SLinus Torvalds "IBF timeout (while writing data)\n"); 2051da177e4SLinus Torvalds return -EIO; 2061da177e4SLinus Torvalds } 207*90dda520SKylene Jo Hall outb(buf[i], chip->vendor.base + NSC_DATA); 2081da177e4SLinus Torvalds } 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { 211e659a3feSKylene Jo Hall dev_err(chip->dev, "IBF timeout\n"); 2121da177e4SLinus Torvalds return -EIO; 2131da177e4SLinus Torvalds } 214*90dda520SKylene Jo Hall outb(NSC_COMMAND_EOC, chip->vendor.base + NSC_COMMAND); 2151da177e4SLinus Torvalds 2161da177e4SLinus Torvalds return count; 2171da177e4SLinus Torvalds } 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds static void tpm_nsc_cancel(struct tpm_chip *chip) 2201da177e4SLinus Torvalds { 221*90dda520SKylene Jo Hall outb(NSC_COMMAND_CANCEL, chip->vendor.base + NSC_COMMAND); 2221da177e4SLinus Torvalds } 2231da177e4SLinus Torvalds 224b4ed3e3cSKylene Jo Hall static u8 tpm_nsc_status(struct tpm_chip *chip) 225b4ed3e3cSKylene Jo Hall { 226*90dda520SKylene Jo Hall return inb(chip->vendor.base + NSC_STATUS); 227b4ed3e3cSKylene Jo Hall } 228b4ed3e3cSKylene Jo Hall 2291da177e4SLinus Torvalds static struct file_operations nsc_ops = { 2301da177e4SLinus Torvalds .owner = THIS_MODULE, 2311da177e4SLinus Torvalds .llseek = no_llseek, 2321da177e4SLinus Torvalds .open = tpm_open, 2331da177e4SLinus Torvalds .read = tpm_read, 2341da177e4SLinus Torvalds .write = tpm_write, 2351da177e4SLinus Torvalds .release = tpm_release, 2361da177e4SLinus Torvalds }; 2371da177e4SLinus Torvalds 2386659ca2aSKylene Hall static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL); 2396659ca2aSKylene Hall static DEVICE_ATTR(pcrs, S_IRUGO, tpm_show_pcrs, NULL); 2406659ca2aSKylene Hall static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps, NULL); 2416659ca2aSKylene Hall static DEVICE_ATTR(cancel, S_IWUSR|S_IWGRP, NULL, tpm_store_cancel); 2426659ca2aSKylene Hall 2436659ca2aSKylene Hall static struct attribute * nsc_attrs[] = { 2446659ca2aSKylene Hall &dev_attr_pubek.attr, 2456659ca2aSKylene Hall &dev_attr_pcrs.attr, 2466659ca2aSKylene Hall &dev_attr_caps.attr, 2476659ca2aSKylene Hall &dev_attr_cancel.attr, 248874ec33fSRandy Dunlap NULL, 2496659ca2aSKylene Hall }; 2506659ca2aSKylene Hall 2516659ca2aSKylene Hall static struct attribute_group nsc_attr_grp = { .attrs = nsc_attrs }; 2526659ca2aSKylene Hall 2531da177e4SLinus Torvalds static struct tpm_vendor_specific tpm_nsc = { 2541da177e4SLinus Torvalds .recv = tpm_nsc_recv, 2551da177e4SLinus Torvalds .send = tpm_nsc_send, 2561da177e4SLinus Torvalds .cancel = tpm_nsc_cancel, 257b4ed3e3cSKylene Jo Hall .status = tpm_nsc_status, 2581da177e4SLinus Torvalds .req_complete_mask = NSC_STATUS_OBF, 2591da177e4SLinus Torvalds .req_complete_val = NSC_STATUS_OBF, 260d9e5b6bfSKylene Hall .req_canceled = NSC_STATUS_RDY, 2616659ca2aSKylene Hall .attr_group = &nsc_attr_grp, 2621da177e4SLinus Torvalds .miscdev = { .fops = &nsc_ops, }, 2631da177e4SLinus Torvalds }; 2641da177e4SLinus Torvalds 265570302a3SKylene Jo Hall static struct platform_device *pdev = NULL; 266570302a3SKylene Jo Hall 267570302a3SKylene Jo Hall static void __devexit tpm_nsc_remove(struct device *dev) 268570302a3SKylene Jo Hall { 269570302a3SKylene Jo Hall struct tpm_chip *chip = dev_get_drvdata(dev); 270570302a3SKylene Jo Hall if ( chip ) { 271*90dda520SKylene Jo Hall release_region(chip->vendor.base, 2); 272570302a3SKylene Jo Hall tpm_remove_hardware(chip->dev); 273570302a3SKylene Jo Hall } 274570302a3SKylene Jo Hall } 275570302a3SKylene Jo Hall 276570302a3SKylene Jo Hall static struct device_driver nsc_drv = { 277570302a3SKylene Jo Hall .name = "tpm_nsc", 278570302a3SKylene Jo Hall .bus = &platform_bus_type, 279570302a3SKylene Jo Hall .owner = THIS_MODULE, 280570302a3SKylene Jo Hall .suspend = tpm_pm_suspend, 281570302a3SKylene Jo Hall .resume = tpm_pm_resume, 282570302a3SKylene Jo Hall }; 283570302a3SKylene Jo Hall 284570302a3SKylene Jo Hall static int __init init_nsc(void) 2851da177e4SLinus Torvalds { 2861da177e4SLinus Torvalds int rc = 0; 287e1a23c66SKylene Hall int lo, hi; 288daacdfa6SKylene Jo Hall int nscAddrBase = TPM_ADDR; 289e1a23c66SKylene Hall 290daacdfa6SKylene Jo Hall 2911da177e4SLinus Torvalds /* verify that it is a National part (SID) */ 292daacdfa6SKylene Jo Hall if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) { 293daacdfa6SKylene Jo Hall nscAddrBase = (tpm_read_index(TPM_SUPERIO_ADDR, 0x2C)<<8)| 294daacdfa6SKylene Jo Hall (tpm_read_index(TPM_SUPERIO_ADDR, 0x2B)&0xFE); 295570302a3SKylene Jo Hall if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6) 296570302a3SKylene Jo Hall return -ENODEV; 297daacdfa6SKylene Jo Hall } 298daacdfa6SKylene Jo Hall 299e2a8f7a1SKylene Jo Hall driver_register(&nsc_drv); 300e2a8f7a1SKylene Jo Hall 301daacdfa6SKylene Jo Hall hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI); 302daacdfa6SKylene Jo Hall lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO); 303daacdfa6SKylene Jo Hall tpm_nsc.base = (hi<<8) | lo; 3041da177e4SLinus Torvalds 305570302a3SKylene Jo Hall /* enable the DPM module */ 306570302a3SKylene Jo Hall tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01); 307570302a3SKylene Jo Hall 308e2a8f7a1SKylene Jo Hall pdev = kzalloc(sizeof(struct platform_device), GFP_KERNEL); 309e2a8f7a1SKylene Jo Hall if (!pdev) { 310e2a8f7a1SKylene Jo Hall rc = -ENOMEM; 311e2a8f7a1SKylene Jo Hall goto err_unreg_drv; 312e2a8f7a1SKylene Jo Hall } 313570302a3SKylene Jo Hall 314570302a3SKylene Jo Hall pdev->name = "tpm_nscl0"; 315570302a3SKylene Jo Hall pdev->id = -1; 316570302a3SKylene Jo Hall pdev->num_resources = 0; 317570302a3SKylene Jo Hall pdev->dev.release = tpm_nsc_remove; 318570302a3SKylene Jo Hall pdev->dev.driver = &nsc_drv; 319570302a3SKylene Jo Hall 320e2a8f7a1SKylene Jo Hall if ((rc = platform_device_register(pdev)) < 0) 321e2a8f7a1SKylene Jo Hall goto err_free_dev; 322570302a3SKylene Jo Hall 323570302a3SKylene Jo Hall if (request_region(tpm_nsc.base, 2, "tpm_nsc0") == NULL ) { 324e2a8f7a1SKylene Jo Hall rc = -EBUSY; 325e2a8f7a1SKylene Jo Hall goto err_unreg_dev; 326570302a3SKylene Jo Hall } 327570302a3SKylene Jo Hall 328e2a8f7a1SKylene Jo Hall if ((rc = tpm_register_hardware(&pdev->dev, &tpm_nsc)) < 0) 329e2a8f7a1SKylene Jo Hall goto err_rel_reg; 330570302a3SKylene Jo Hall 331570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC TPM detected\n"); 332570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3331da177e4SLinus Torvalds "NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n", 334daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x07), tpm_read_index(nscAddrBase,0x20), 335daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x27)); 336570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3371da177e4SLinus Torvalds "NSC SIOCF1 0x%x SIOCF5 0x%x SIOCF6 0x%x SIOCF8 0x%x\n", 338daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x21), tpm_read_index(nscAddrBase,0x25), 339daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x26), tpm_read_index(nscAddrBase,0x28)); 340570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC IO Base0 0x%x\n", 341daacdfa6SKylene Jo Hall (tpm_read_index(nscAddrBase,0x60) << 8) | tpm_read_index(nscAddrBase,0x61)); 342570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC IO Base1 0x%x\n", 343daacdfa6SKylene Jo Hall (tpm_read_index(nscAddrBase,0x62) << 8) | tpm_read_index(nscAddrBase,0x63)); 344570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC Interrupt number and wakeup 0x%x\n", 345daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x70)); 346570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC IRQ type select 0x%x\n", 347daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x71)); 348570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3491da177e4SLinus Torvalds "NSC DMA channel select0 0x%x, select1 0x%x\n", 350daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x74), tpm_read_index(nscAddrBase,0x75)); 351570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3521da177e4SLinus Torvalds "NSC Config " 3531da177e4SLinus Torvalds "0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", 354daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF0), tpm_read_index(nscAddrBase,0xF1), 355daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF2), tpm_read_index(nscAddrBase,0xF3), 356daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF4), tpm_read_index(nscAddrBase,0xF5), 357daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF6), tpm_read_index(nscAddrBase,0xF7), 358daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF8), tpm_read_index(nscAddrBase,0xF9)); 3591da177e4SLinus Torvalds 360570302a3SKylene Jo Hall dev_info(&pdev->dev, 361daacdfa6SKylene Jo Hall "NSC TPM revision %d\n", 362daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase, 0x27) & 0x1F); 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds return 0; 365e2a8f7a1SKylene Jo Hall 366e2a8f7a1SKylene Jo Hall err_rel_reg: 367e2a8f7a1SKylene Jo Hall release_region(tpm_nsc.base, 2); 368e2a8f7a1SKylene Jo Hall err_unreg_dev: 369e2a8f7a1SKylene Jo Hall platform_device_unregister(pdev); 370e2a8f7a1SKylene Jo Hall err_free_dev: 371e2a8f7a1SKylene Jo Hall kfree(pdev); 372e2a8f7a1SKylene Jo Hall err_unreg_drv: 373e2a8f7a1SKylene Jo Hall driver_unregister(&nsc_drv); 374e2a8f7a1SKylene Jo Hall return rc; 3751da177e4SLinus Torvalds } 3761da177e4SLinus Torvalds 3771da177e4SLinus Torvalds static void __exit cleanup_nsc(void) 3781da177e4SLinus Torvalds { 379570302a3SKylene Jo Hall if (pdev) { 380570302a3SKylene Jo Hall tpm_nsc_remove(&pdev->dev); 381570302a3SKylene Jo Hall platform_device_unregister(pdev); 382570302a3SKylene Jo Hall kfree(pdev); 383570302a3SKylene Jo Hall pdev = NULL; 384570302a3SKylene Jo Hall } 385570302a3SKylene Jo Hall 386570302a3SKylene Jo Hall driver_unregister(&nsc_drv); 3871da177e4SLinus Torvalds } 3881da177e4SLinus Torvalds 3891da177e4SLinus Torvalds module_init(init_nsc); 3901da177e4SLinus Torvalds module_exit(cleanup_nsc); 3911da177e4SLinus Torvalds 3921da177e4SLinus Torvalds MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)"); 3931da177e4SLinus Torvalds MODULE_DESCRIPTION("TPM Driver"); 3941da177e4SLinus Torvalds MODULE_VERSION("2.0"); 3951da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 396