tpm_infineon.c (b4ed3e3cbb312869929cf4528d71e52629a6cacb) tpm_infineon.c (e659a3fe2027b19ecd8abb7ad79253672763454b)
1/*
2 * Description:
3 * Device Driver for the Infineon Technologies
4 * SLD 9630 TT 1.1 and SLB 9635 TT 1.2 Trusted Platform Module
5 * Specifications at www.trustedcomputinggroup.org
6 *
7 * Copyright (C) 2005, Marcel Selhorst <selhorst@crypto.rub.de>
8 * Applied Data Security Group, Ruhr-University Bochum, Germany

--- 129 unchanged lines hidden (view full) ---

138 status = inb(chip->vendor->base + STAT);
139 /* check the status-register if wait_for_bit is set */
140 if (status & 1 << wait_for_bit)
141 break;
142 msleep(TPM_MSLEEP_TIME);
143 }
144 if (i == TPM_MAX_TRIES) { /* timeout occurs */
145 if (wait_for_bit == STAT_XFE)
1/*
2 * Description:
3 * Device Driver for the Infineon Technologies
4 * SLD 9630 TT 1.1 and SLB 9635 TT 1.2 Trusted Platform Module
5 * Specifications at www.trustedcomputinggroup.org
6 *
7 * Copyright (C) 2005, Marcel Selhorst <selhorst@crypto.rub.de>
8 * Applied Data Security Group, Ruhr-University Bochum, Germany

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138 status = inb(chip->vendor->base + STAT);
139 /* check the status-register if wait_for_bit is set */
140 if (status & 1 << wait_for_bit)
141 break;
142 msleep(TPM_MSLEEP_TIME);
143 }
144 if (i == TPM_MAX_TRIES) { /* timeout occurs */
145 if (wait_for_bit == STAT_XFE)
146 dev_err(&chip->pci_dev->dev,
146 dev_err(chip->dev,
147 "Timeout in wait(STAT_XFE)\n");
148 if (wait_for_bit == STAT_RDA)
147 "Timeout in wait(STAT_XFE)\n");
148 if (wait_for_bit == STAT_RDA)
149 dev_err(&chip->pci_dev->dev,
149 dev_err(chip->dev,
150 "Timeout in wait(STAT_RDA)\n");
151 return -EIO;
152 }
153 return 0;
154};
155
156static void wait_and_send(struct tpm_chip *chip, u8 sendbyte)
157{

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165 creation. Set the maximum number of WTX-packages in the definitions
166 above, if the number is reached, the waiting-time will be denied
167 and the TPM command has to be resend.
168 */
169
170static void tpm_wtx(struct tpm_chip *chip)
171{
172 number_of_wtx++;
150 "Timeout in wait(STAT_RDA)\n");
151 return -EIO;
152 }
153 return 0;
154};
155
156static void wait_and_send(struct tpm_chip *chip, u8 sendbyte)
157{

--- 7 unchanged lines hidden (view full) ---

165 creation. Set the maximum number of WTX-packages in the definitions
166 above, if the number is reached, the waiting-time will be denied
167 and the TPM command has to be resend.
168 */
169
170static void tpm_wtx(struct tpm_chip *chip)
171{
172 number_of_wtx++;
173 dev_info(&chip->pci_dev->dev, "Granting WTX (%02d / %02d)\n",
173 dev_info(chip->dev, "Granting WTX (%02d / %02d)\n",
174 number_of_wtx, TPM_MAX_WTX_PACKAGES);
175 wait_and_send(chip, TPM_VL_VER);
176 wait_and_send(chip, TPM_CTRL_WTX);
177 wait_and_send(chip, 0x00);
178 wait_and_send(chip, 0x00);
179 msleep(TPM_WTX_MSLEEP_TIME);
180}
181
182static void tpm_wtx_abort(struct tpm_chip *chip)
183{
174 number_of_wtx, TPM_MAX_WTX_PACKAGES);
175 wait_and_send(chip, TPM_VL_VER);
176 wait_and_send(chip, TPM_CTRL_WTX);
177 wait_and_send(chip, 0x00);
178 wait_and_send(chip, 0x00);
179 msleep(TPM_WTX_MSLEEP_TIME);
180}
181
182static void tpm_wtx_abort(struct tpm_chip *chip)
183{
184 dev_info(&chip->pci_dev->dev, "Aborting WTX\n");
184 dev_info(chip->dev, "Aborting WTX\n");
185 wait_and_send(chip, TPM_VL_VER);
186 wait_and_send(chip, TPM_CTRL_WTX_ABORT);
187 wait_and_send(chip, 0x00);
188 wait_and_send(chip, 0x00);
189 number_of_wtx = 0;
190 msleep(TPM_WTX_MSLEEP_TIME);
191}
192

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201 for (i = 0; i < 4; i++) {
202 ret = wait(chip, STAT_RDA);
203 if (ret)
204 return -EIO;
205 buf[i] = inb(chip->vendor->base + RDFIFO);
206 }
207
208 if (buf[0] != TPM_VL_VER) {
185 wait_and_send(chip, TPM_VL_VER);
186 wait_and_send(chip, TPM_CTRL_WTX_ABORT);
187 wait_and_send(chip, 0x00);
188 wait_and_send(chip, 0x00);
189 number_of_wtx = 0;
190 msleep(TPM_WTX_MSLEEP_TIME);
191}
192

--- 8 unchanged lines hidden (view full) ---

201 for (i = 0; i < 4; i++) {
202 ret = wait(chip, STAT_RDA);
203 if (ret)
204 return -EIO;
205 buf[i] = inb(chip->vendor->base + RDFIFO);
206 }
207
208 if (buf[0] != TPM_VL_VER) {
209 dev_err(&chip->pci_dev->dev,
209 dev_err(chip->dev,
210 "Wrong transport protocol implementation!\n");
211 return -EIO;
212 }
213
214 if (buf[1] == TPM_CTRL_DATA) {
215 /* size of the data received */
216 size = ((buf[2] << 8) | buf[3]);
217
218 for (i = 0; i < size; i++) {
219 wait(chip, STAT_RDA);
220 buf[i] = inb(chip->vendor->base + RDFIFO);
221 }
222
223 if ((size == 0x6D00) && (buf[1] == 0x80)) {
210 "Wrong transport protocol implementation!\n");
211 return -EIO;
212 }
213
214 if (buf[1] == TPM_CTRL_DATA) {
215 /* size of the data received */
216 size = ((buf[2] << 8) | buf[3]);
217
218 for (i = 0; i < size; i++) {
219 wait(chip, STAT_RDA);
220 buf[i] = inb(chip->vendor->base + RDFIFO);
221 }
222
223 if ((size == 0x6D00) && (buf[1] == 0x80)) {
224 dev_err(&chip->pci_dev->dev,
224 dev_err(chip->dev,
225 "Error handling on vendor layer!\n");
226 return -EIO;
227 }
228
229 for (i = 0; i < size; i++)
230 buf[i] = buf[i + 6];
231
232 size = size - 6;
233 return size;
234 }
235
236 if (buf[1] == TPM_CTRL_WTX) {
225 "Error handling on vendor layer!\n");
226 return -EIO;
227 }
228
229 for (i = 0; i < size; i++)
230 buf[i] = buf[i + 6];
231
232 size = size - 6;
233 return size;
234 }
235
236 if (buf[1] == TPM_CTRL_WTX) {
237 dev_info(&chip->pci_dev->dev, "WTX-package received\n");
237 dev_info(chip->dev, "WTX-package received\n");
238 if (number_of_wtx < TPM_MAX_WTX_PACKAGES) {
239 tpm_wtx(chip);
240 goto recv_begin;
241 } else {
242 tpm_wtx_abort(chip);
243 goto recv_begin;
244 }
245 }
246
247 if (buf[1] == TPM_CTRL_WTX_ABORT_ACK) {
238 if (number_of_wtx < TPM_MAX_WTX_PACKAGES) {
239 tpm_wtx(chip);
240 goto recv_begin;
241 } else {
242 tpm_wtx_abort(chip);
243 goto recv_begin;
244 }
245 }
246
247 if (buf[1] == TPM_CTRL_WTX_ABORT_ACK) {
248 dev_info(&chip->pci_dev->dev, "WTX-abort acknowledged\n");
248 dev_info(chip->dev, "WTX-abort acknowledged\n");
249 return size;
250 }
251
252 if (buf[1] == TPM_CTRL_ERROR) {
249 return size;
250 }
251
252 if (buf[1] == TPM_CTRL_ERROR) {
253 dev_err(&chip->pci_dev->dev, "ERROR-package received:\n");
253 dev_err(chip->dev, "ERROR-package received:\n");
254 if (buf[4] == TPM_INF_NAK)
254 if (buf[4] == TPM_INF_NAK)
255 dev_err(&chip->pci_dev->dev,
255 dev_err(chip->dev,
256 "-> Negative acknowledgement"
257 " - retransmit command!\n");
258 return -EIO;
259 }
260 return -EIO;
261}
262
263static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count)
264{
265 int i;
266 int ret;
267 u8 count_high, count_low, count_4, count_3, count_2, count_1;
268
269 /* Disabling Reset, LP and IRQC */
270 outb(RESET_LP_IRQC_DISABLE, chip->vendor->base + CMD);
271
272 ret = empty_fifo(chip, 1);
273 if (ret) {
256 "-> Negative acknowledgement"
257 " - retransmit command!\n");
258 return -EIO;
259 }
260 return -EIO;
261}
262
263static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count)
264{
265 int i;
266 int ret;
267 u8 count_high, count_low, count_4, count_3, count_2, count_1;
268
269 /* Disabling Reset, LP and IRQC */
270 outb(RESET_LP_IRQC_DISABLE, chip->vendor->base + CMD);
271
272 ret = empty_fifo(chip, 1);
273 if (ret) {
274 dev_err(&chip->pci_dev->dev, "Timeout while clearing FIFO\n");
274 dev_err(chip->dev, "Timeout while clearing FIFO\n");
275 return -EIO;
276 }
277
278 ret = wait(chip, STAT_XFE);
279 if (ret)
280 return -EIO;
281
282 count_4 = (count & 0xff000000) >> 24;

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489 "product id %02x%02x"
490 "%s\n",
491 TPM_INF_ADDR,
492 tpm_inf.base,
493 version[0], version[1],
494 vendorid[0], vendorid[1],
495 productid[0], productid[1], chipname);
496
275 return -EIO;
276 }
277
278 ret = wait(chip, STAT_XFE);
279 if (ret)
280 return -EIO;
281
282 count_4 = (count & 0xff000000) >> 24;

--- 206 unchanged lines hidden (view full) ---

489 "product id %02x%02x"
490 "%s\n",
491 TPM_INF_ADDR,
492 tpm_inf.base,
493 version[0], version[1],
494 vendorid[0], vendorid[1],
495 productid[0], productid[1], chipname);
496
497 rc = tpm_register_hardware(pci_dev, &tpm_inf);
497 rc = tpm_register_hardware(&pci_dev->dev, &tpm_inf);
498 if (rc < 0)
499 goto error;
500 return 0;
501 } else {
502 dev_info(&pci_dev->dev, "No Infineon TPM found!\n");
503error:
504 pnp_unregister_driver(&tpm_inf_pnp);
505error2:
506 pci_disable_device(pci_dev);
507 pnp_registered = 0;
508 return -ENODEV;
509 }
510}
511
498 if (rc < 0)
499 goto error;
500 return 0;
501 } else {
502 dev_info(&pci_dev->dev, "No Infineon TPM found!\n");
503error:
504 pnp_unregister_driver(&tpm_inf_pnp);
505error2:
506 pci_disable_device(pci_dev);
507 pnp_registered = 0;
508 return -ENODEV;
509 }
510}
511
512static __devexit void tpm_inf_remove(struct pci_dev* pci_dev)
513{
514 struct tpm_chip* chip = pci_get_drvdata(pci_dev);
515
516 if( chip )
517 tpm_remove_hardware(chip->dev);
518}
519
512static struct pci_device_id tpm_pci_tbl[] __devinitdata = {
513 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)},
514 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)},
515 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0)},
516 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12)},
517 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0)},
518 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0)},
519 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1)},
520 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_2)},
521 {0,}
522};
523
524MODULE_DEVICE_TABLE(pci, tpm_pci_tbl);
525
526static struct pci_driver inf_pci_driver = {
527 .name = "tpm_inf",
528 .id_table = tpm_pci_tbl,
529 .probe = tpm_inf_probe,
520static struct pci_device_id tpm_pci_tbl[] __devinitdata = {
521 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)},
522 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)},
523 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0)},
524 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12)},
525 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0)},
526 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0)},
527 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1)},
528 {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_2)},
529 {0,}
530};
531
532MODULE_DEVICE_TABLE(pci, tpm_pci_tbl);
533
534static struct pci_driver inf_pci_driver = {
535 .name = "tpm_inf",
536 .id_table = tpm_pci_tbl,
537 .probe = tpm_inf_probe,
530 .remove = __devexit_p(tpm_remove),
538 .remove = __devexit_p(tpm_inf_remove),
531 .suspend = tpm_pm_suspend,
532 .resume = tpm_pm_resume,
533};
534
535static int __init init_inf(void)
536{
537 return pci_register_driver(&inf_pci_driver);
538}

--- 15 unchanged lines hidden --- 		539 .suspend = tpm_pm_suspend,
540 .resume = tpm_pm_resume,
541};
542
543static int __init init_inf(void)
544{
545 return pci_register_driver(&inf_pci_driver);
546}

--- 15 unchanged lines hidden ---