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> 235a0e3ad6STejun 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 }; 67*ee177984SJarkko Sakkinen 68*ee177984SJarkko Sakkinen struct tpm_nsc_priv { 69*ee177984SJarkko Sakkinen unsigned long base; 70*ee177984SJarkko Sakkinen }; 71*ee177984SJarkko Sakkinen 72*ee177984SJarkko Sakkinen static inline struct tpm_nsc_priv *nsc_get_priv(struct tpm_chip *chip) 73*ee177984SJarkko Sakkinen { 74*ee177984SJarkko Sakkinen return chip->vendor.priv; 75*ee177984SJarkko Sakkinen } 76*ee177984SJarkko Sakkinen 771da177e4SLinus Torvalds /* 781da177e4SLinus Torvalds * Wait for a certain status to appear 791da177e4SLinus Torvalds */ 801da177e4SLinus Torvalds static int wait_for_stat(struct tpm_chip *chip, u8 mask, u8 val, u8 * data) 811da177e4SLinus Torvalds { 82700d8bdcSNishanth Aravamudan unsigned long stop; 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds /* status immediately available check */ 85*ee177984SJarkko Sakkinen *data = inb(nsc_get_priv(chip)->base + NSC_STATUS); 861da177e4SLinus Torvalds if ((*data & mask) == val) 871da177e4SLinus Torvalds return 0; 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds /* wait for status */ 90700d8bdcSNishanth Aravamudan stop = jiffies + 10 * HZ; 911da177e4SLinus Torvalds do { 92700d8bdcSNishanth Aravamudan msleep(TPM_TIMEOUT); 93*ee177984SJarkko Sakkinen *data = inb(nsc_get_priv(chip)->base + 1); 94700d8bdcSNishanth Aravamudan if ((*data & mask) == val) 951da177e4SLinus Torvalds return 0; 961da177e4SLinus Torvalds } 97700d8bdcSNishanth Aravamudan while (time_before(jiffies, stop)); 981da177e4SLinus Torvalds 991da177e4SLinus Torvalds return -EBUSY; 1001da177e4SLinus Torvalds } 1011da177e4SLinus Torvalds 1021da177e4SLinus Torvalds static int nsc_wait_for_ready(struct tpm_chip *chip) 1031da177e4SLinus Torvalds { 1041da177e4SLinus Torvalds int status; 105700d8bdcSNishanth Aravamudan unsigned long stop; 1061da177e4SLinus Torvalds 1071da177e4SLinus Torvalds /* status immediately available check */ 108*ee177984SJarkko Sakkinen status = inb(nsc_get_priv(chip)->base + NSC_STATUS); 1091da177e4SLinus Torvalds if (status & NSC_STATUS_OBF) 110*ee177984SJarkko Sakkinen status = inb(nsc_get_priv(chip)->base + NSC_DATA); 1111da177e4SLinus Torvalds if (status & NSC_STATUS_RDY) 1121da177e4SLinus Torvalds return 0; 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds /* wait for status */ 115700d8bdcSNishanth Aravamudan stop = jiffies + 100; 1161da177e4SLinus Torvalds do { 117700d8bdcSNishanth Aravamudan msleep(TPM_TIMEOUT); 118*ee177984SJarkko Sakkinen status = inb(nsc_get_priv(chip)->base + NSC_STATUS); 1191da177e4SLinus Torvalds if (status & NSC_STATUS_OBF) 120*ee177984SJarkko Sakkinen status = inb(nsc_get_priv(chip)->base + NSC_DATA); 121700d8bdcSNishanth Aravamudan if (status & NSC_STATUS_RDY) 1221da177e4SLinus Torvalds return 0; 1231da177e4SLinus Torvalds } 124700d8bdcSNishanth Aravamudan while (time_before(jiffies, stop)); 1251da177e4SLinus Torvalds 1268cfffc9dSJason Gunthorpe dev_info(&chip->dev, "wait for ready failed\n"); 1271da177e4SLinus Torvalds return -EBUSY; 1281da177e4SLinus Torvalds } 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) 1321da177e4SLinus Torvalds { 1331da177e4SLinus Torvalds u8 *buffer = buf; 1341da177e4SLinus Torvalds u8 data, *p; 1351da177e4SLinus Torvalds u32 size; 1361da177e4SLinus Torvalds __be32 *native_size; 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvalds if (count < 6) 1391da177e4SLinus Torvalds return -EIO; 1401da177e4SLinus Torvalds 1411da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0) { 1428cfffc9dSJason Gunthorpe dev_err(&chip->dev, "F0 timeout\n"); 1431da177e4SLinus Torvalds return -EIO; 1441da177e4SLinus Torvalds } 145*ee177984SJarkko Sakkinen 146*ee177984SJarkko Sakkinen data = inb(nsc_get_priv(chip)->base + NSC_DATA); 147*ee177984SJarkko Sakkinen if (data != NSC_COMMAND_NORMAL) { 1488cfffc9dSJason Gunthorpe dev_err(&chip->dev, "not in normal mode (0x%x)\n", 1491da177e4SLinus Torvalds data); 1501da177e4SLinus Torvalds return -EIO; 1511da177e4SLinus Torvalds } 1521da177e4SLinus Torvalds 1531da177e4SLinus Torvalds /* read the whole packet */ 1541da177e4SLinus Torvalds for (p = buffer; p < &buffer[count]; p++) { 1551da177e4SLinus Torvalds if (wait_for_stat 1561da177e4SLinus Torvalds (chip, NSC_STATUS_OBF, NSC_STATUS_OBF, &data) < 0) { 1578cfffc9dSJason Gunthorpe dev_err(&chip->dev, 1581da177e4SLinus Torvalds "OBF timeout (while reading data)\n"); 1591da177e4SLinus Torvalds return -EIO; 1601da177e4SLinus Torvalds } 1611da177e4SLinus Torvalds if (data & NSC_STATUS_F0) 1621da177e4SLinus Torvalds break; 163*ee177984SJarkko Sakkinen *p = inb(nsc_get_priv(chip)->base + NSC_DATA); 1641da177e4SLinus Torvalds } 1651da177e4SLinus Torvalds 166daacdfa6SKylene Jo Hall if ((data & NSC_STATUS_F0) == 0 && 167daacdfa6SKylene Jo Hall (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0)) { 1688cfffc9dSJason Gunthorpe dev_err(&chip->dev, "F0 not set\n"); 1691da177e4SLinus Torvalds return -EIO; 1701da177e4SLinus Torvalds } 171*ee177984SJarkko Sakkinen 172*ee177984SJarkko Sakkinen data = inb(nsc_get_priv(chip)->base + NSC_DATA); 173*ee177984SJarkko Sakkinen if (data != NSC_COMMAND_EOC) { 1748cfffc9dSJason Gunthorpe dev_err(&chip->dev, 1751da177e4SLinus Torvalds "expected end of command(0x%x)\n", data); 1761da177e4SLinus Torvalds return -EIO; 1771da177e4SLinus Torvalds } 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds native_size = (__force __be32 *) (buf + 2); 1801da177e4SLinus Torvalds size = be32_to_cpu(*native_size); 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds if (count < size) 1831da177e4SLinus Torvalds return -EIO; 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds return size; 1861da177e4SLinus Torvalds } 1871da177e4SLinus Torvalds 1881da177e4SLinus Torvalds static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count) 1891da177e4SLinus Torvalds { 1901da177e4SLinus Torvalds u8 data; 1911da177e4SLinus Torvalds int i; 1921da177e4SLinus Torvalds 1931da177e4SLinus Torvalds /* 1941da177e4SLinus Torvalds * If we hit the chip with back to back commands it locks up 1951da177e4SLinus Torvalds * and never set IBF. Hitting it with this "hammer" seems to 1961da177e4SLinus Torvalds * fix it. Not sure why this is needed, we followed the flow 1971da177e4SLinus Torvalds * chart in the manual to the letter. 1981da177e4SLinus Torvalds */ 199*ee177984SJarkko Sakkinen outb(NSC_COMMAND_CANCEL, nsc_get_priv(chip)->base + NSC_COMMAND); 2001da177e4SLinus Torvalds 2011da177e4SLinus Torvalds if (nsc_wait_for_ready(chip) != 0) 2021da177e4SLinus Torvalds return -EIO; 2031da177e4SLinus Torvalds 2041da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { 2058cfffc9dSJason Gunthorpe dev_err(&chip->dev, "IBF timeout\n"); 2061da177e4SLinus Torvalds return -EIO; 2071da177e4SLinus Torvalds } 2081da177e4SLinus Torvalds 209*ee177984SJarkko Sakkinen outb(NSC_COMMAND_NORMAL, nsc_get_priv(chip)->base + NSC_COMMAND); 2101da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) { 2118cfffc9dSJason Gunthorpe dev_err(&chip->dev, "IBR timeout\n"); 2121da177e4SLinus Torvalds return -EIO; 2131da177e4SLinus Torvalds } 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds for (i = 0; i < count; i++) { 2161da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { 2178cfffc9dSJason Gunthorpe dev_err(&chip->dev, 2181da177e4SLinus Torvalds "IBF timeout (while writing data)\n"); 2191da177e4SLinus Torvalds return -EIO; 2201da177e4SLinus Torvalds } 221*ee177984SJarkko Sakkinen outb(buf[i], nsc_get_priv(chip)->base + NSC_DATA); 2221da177e4SLinus Torvalds } 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { 2258cfffc9dSJason Gunthorpe dev_err(&chip->dev, "IBF timeout\n"); 2261da177e4SLinus Torvalds return -EIO; 2271da177e4SLinus Torvalds } 228*ee177984SJarkko Sakkinen outb(NSC_COMMAND_EOC, nsc_get_priv(chip)->base + NSC_COMMAND); 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds return count; 2311da177e4SLinus Torvalds } 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvalds static void tpm_nsc_cancel(struct tpm_chip *chip) 2341da177e4SLinus Torvalds { 235*ee177984SJarkko Sakkinen outb(NSC_COMMAND_CANCEL, nsc_get_priv(chip)->base + NSC_COMMAND); 2361da177e4SLinus Torvalds } 2371da177e4SLinus Torvalds 238b4ed3e3cSKylene Jo Hall static u8 tpm_nsc_status(struct tpm_chip *chip) 239b4ed3e3cSKylene Jo Hall { 240*ee177984SJarkko Sakkinen return inb(nsc_get_priv(chip)->base + NSC_STATUS); 241b4ed3e3cSKylene Jo Hall } 242b4ed3e3cSKylene Jo Hall 2431f866057SStefan Berger static bool tpm_nsc_req_canceled(struct tpm_chip *chip, u8 status) 2441f866057SStefan Berger { 2451f866057SStefan Berger return (status == NSC_STATUS_RDY); 2461f866057SStefan Berger } 2471f866057SStefan Berger 24801ad1fa7SJason Gunthorpe static const struct tpm_class_ops tpm_nsc = { 2491da177e4SLinus Torvalds .recv = tpm_nsc_recv, 2501da177e4SLinus Torvalds .send = tpm_nsc_send, 2511da177e4SLinus Torvalds .cancel = tpm_nsc_cancel, 252b4ed3e3cSKylene Jo Hall .status = tpm_nsc_status, 2531da177e4SLinus Torvalds .req_complete_mask = NSC_STATUS_OBF, 2541da177e4SLinus Torvalds .req_complete_val = NSC_STATUS_OBF, 2551f866057SStefan Berger .req_canceled = tpm_nsc_req_canceled, 2561da177e4SLinus Torvalds }; 2571da177e4SLinus Torvalds 258570302a3SKylene Jo Hall static struct platform_device *pdev = NULL; 259570302a3SKylene Jo Hall 2604821cd11SSam Ravnborg static void tpm_nsc_remove(struct device *dev) 261570302a3SKylene Jo Hall { 262570302a3SKylene Jo Hall struct tpm_chip *chip = dev_get_drvdata(dev); 263afb5abc2SJarkko Sakkinen 264afb5abc2SJarkko Sakkinen tpm_chip_unregister(chip); 265*ee177984SJarkko Sakkinen release_region(nsc_get_priv(chip)->base, 2); 266570302a3SKylene Jo Hall } 267570302a3SKylene Jo Hall 268ca9a2054SRafael J. Wysocki static SIMPLE_DEV_PM_OPS(tpm_nsc_pm, tpm_pm_suspend, tpm_pm_resume); 26909f50c95SDavid Smith 27009f50c95SDavid Smith static struct platform_driver nsc_drv = { 27109f50c95SDavid Smith .driver = { 272570302a3SKylene Jo Hall .name = "tpm_nsc", 273ca9a2054SRafael J. Wysocki .pm = &tpm_nsc_pm, 27409f50c95SDavid Smith }, 275570302a3SKylene Jo Hall }; 276570302a3SKylene Jo Hall 277570302a3SKylene Jo Hall static int __init init_nsc(void) 2781da177e4SLinus Torvalds { 2791da177e4SLinus Torvalds int rc = 0; 280f33d9bd5SJeff Garzik int lo, hi, err; 281daacdfa6SKylene Jo Hall int nscAddrBase = TPM_ADDR; 282e0dd03caSKylene Jo Hall struct tpm_chip *chip; 283e0dd03caSKylene Jo Hall unsigned long base; 284*ee177984SJarkko Sakkinen struct tpm_nsc_priv *priv; 285daacdfa6SKylene Jo Hall 2861da177e4SLinus Torvalds /* verify that it is a National part (SID) */ 287daacdfa6SKylene Jo Hall if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) { 288daacdfa6SKylene Jo Hall nscAddrBase = (tpm_read_index(TPM_SUPERIO_ADDR, 0x2C)<<8)| 289daacdfa6SKylene Jo Hall (tpm_read_index(TPM_SUPERIO_ADDR, 0x2B)&0xFE); 290570302a3SKylene Jo Hall if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6) 291570302a3SKylene Jo Hall return -ENODEV; 292daacdfa6SKylene Jo Hall } 293daacdfa6SKylene Jo Hall 29409f50c95SDavid Smith err = platform_driver_register(&nsc_drv); 295f33d9bd5SJeff Garzik if (err) 296f33d9bd5SJeff Garzik return err; 297e2a8f7a1SKylene Jo Hall 298daacdfa6SKylene Jo Hall hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI); 299daacdfa6SKylene Jo Hall lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO); 300e0dd03caSKylene Jo Hall base = (hi<<8) | lo; 3011da177e4SLinus Torvalds 302570302a3SKylene Jo Hall /* enable the DPM module */ 303570302a3SKylene Jo Hall tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01); 304570302a3SKylene Jo Hall 30509f50c95SDavid Smith pdev = platform_device_alloc("tpm_nscl0", -1); 306e2a8f7a1SKylene Jo Hall if (!pdev) { 307e2a8f7a1SKylene Jo Hall rc = -ENOMEM; 308e2a8f7a1SKylene Jo Hall goto err_unreg_drv; 309e2a8f7a1SKylene Jo Hall } 310570302a3SKylene Jo Hall 311570302a3SKylene Jo Hall pdev->num_resources = 0; 31209f50c95SDavid Smith pdev->dev.driver = &nsc_drv.driver; 313570302a3SKylene Jo Hall pdev->dev.release = tpm_nsc_remove; 314570302a3SKylene Jo Hall 31529412f0fSStefan Berger if ((rc = platform_device_add(pdev)) < 0) 31629412f0fSStefan Berger goto err_put_dev; 317570302a3SKylene Jo Hall 318*ee177984SJarkko Sakkinen priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 319*ee177984SJarkko Sakkinen if (!priv) { 320*ee177984SJarkko Sakkinen rc = -ENOMEM; 321*ee177984SJarkko Sakkinen goto err_del_dev; 322*ee177984SJarkko Sakkinen } 323*ee177984SJarkko Sakkinen 324*ee177984SJarkko Sakkinen priv->base = base; 325*ee177984SJarkko Sakkinen 326e0dd03caSKylene Jo Hall if (request_region(base, 2, "tpm_nsc0") == NULL ) { 327e2a8f7a1SKylene Jo Hall rc = -EBUSY; 32829412f0fSStefan Berger goto err_del_dev; 329570302a3SKylene Jo Hall } 330570302a3SKylene Jo Hall 331afb5abc2SJarkko Sakkinen chip = tpmm_chip_alloc(&pdev->dev, &tpm_nsc); 332afb5abc2SJarkko Sakkinen if (IS_ERR(chip)) { 333e0dd03caSKylene Jo Hall rc = -ENODEV; 334e2a8f7a1SKylene Jo Hall goto err_rel_reg; 335e0dd03caSKylene Jo Hall } 336570302a3SKylene Jo Hall 337*ee177984SJarkko Sakkinen chip->vendor.priv = priv; 338*ee177984SJarkko Sakkinen 339afb5abc2SJarkko Sakkinen rc = tpm_chip_register(chip); 340afb5abc2SJarkko Sakkinen if (rc) 341afb5abc2SJarkko Sakkinen goto err_rel_reg; 342afb5abc2SJarkko Sakkinen 343570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC TPM detected\n"); 344570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3451da177e4SLinus Torvalds "NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n", 346daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x07), tpm_read_index(nscAddrBase,0x20), 347daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x27)); 348570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3491da177e4SLinus Torvalds "NSC SIOCF1 0x%x SIOCF5 0x%x SIOCF6 0x%x SIOCF8 0x%x\n", 350daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x21), tpm_read_index(nscAddrBase,0x25), 351daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x26), tpm_read_index(nscAddrBase,0x28)); 352570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC IO Base0 0x%x\n", 353daacdfa6SKylene Jo Hall (tpm_read_index(nscAddrBase,0x60) << 8) | tpm_read_index(nscAddrBase,0x61)); 354570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC IO Base1 0x%x\n", 355daacdfa6SKylene Jo Hall (tpm_read_index(nscAddrBase,0x62) << 8) | tpm_read_index(nscAddrBase,0x63)); 356570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC Interrupt number and wakeup 0x%x\n", 357daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x70)); 358570302a3SKylene Jo Hall dev_dbg(&pdev->dev, "NSC IRQ type select 0x%x\n", 359daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x71)); 360570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3611da177e4SLinus Torvalds "NSC DMA channel select0 0x%x, select1 0x%x\n", 362daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0x74), tpm_read_index(nscAddrBase,0x75)); 363570302a3SKylene Jo Hall dev_dbg(&pdev->dev, 3641da177e4SLinus Torvalds "NSC Config " 3651da177e4SLinus Torvalds "0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", 366daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF0), tpm_read_index(nscAddrBase,0xF1), 367daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF2), tpm_read_index(nscAddrBase,0xF3), 368daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF4), tpm_read_index(nscAddrBase,0xF5), 369daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF6), tpm_read_index(nscAddrBase,0xF7), 370daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase,0xF8), tpm_read_index(nscAddrBase,0xF9)); 3711da177e4SLinus Torvalds 372570302a3SKylene Jo Hall dev_info(&pdev->dev, 373daacdfa6SKylene Jo Hall "NSC TPM revision %d\n", 374daacdfa6SKylene Jo Hall tpm_read_index(nscAddrBase, 0x27) & 0x1F); 3751da177e4SLinus Torvalds 3761da177e4SLinus Torvalds return 0; 377e2a8f7a1SKylene Jo Hall 378e2a8f7a1SKylene Jo Hall err_rel_reg: 379e0dd03caSKylene Jo Hall release_region(base, 2); 38029412f0fSStefan Berger err_del_dev: 38129412f0fSStefan Berger platform_device_del(pdev); 38229412f0fSStefan Berger err_put_dev: 38329412f0fSStefan Berger platform_device_put(pdev); 384e2a8f7a1SKylene Jo Hall err_unreg_drv: 38509f50c95SDavid Smith platform_driver_unregister(&nsc_drv); 386e2a8f7a1SKylene Jo Hall return rc; 3871da177e4SLinus Torvalds } 3881da177e4SLinus Torvalds 3891da177e4SLinus Torvalds static void __exit cleanup_nsc(void) 3901da177e4SLinus Torvalds { 391570302a3SKylene Jo Hall if (pdev) { 392570302a3SKylene Jo Hall tpm_nsc_remove(&pdev->dev); 393570302a3SKylene Jo Hall platform_device_unregister(pdev); 394570302a3SKylene Jo Hall } 395570302a3SKylene Jo Hall 39609f50c95SDavid Smith platform_driver_unregister(&nsc_drv); 3971da177e4SLinus Torvalds } 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvalds module_init(init_nsc); 4001da177e4SLinus Torvalds module_exit(cleanup_nsc); 4011da177e4SLinus Torvalds 4021da177e4SLinus Torvalds MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)"); 4031da177e4SLinus Torvalds MODULE_DESCRIPTION("TPM Driver"); 4041da177e4SLinus Torvalds MODULE_VERSION("2.0"); 4051da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 406