tpm_tis.c (6ea24cf79e055f0a62a64baa8587e2254a493c7b) tpm_tis.c (8cfffc9d4d3786d3b496a021d7224e06328bac7d)
1/*
2 * Copyright (C) 2005, 2006 IBM Corporation
3 * Copyright (C) 2014, 2015 Intel Corporation
4 *
5 * Authors:
6 * Leendert van Doorn <leendert@watson.ibm.com>
7 * Kylene Hall <kjhall@us.ibm.com>
8 *

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

255 if (count < TPM_HEADER_SIZE) {
256 size = -EIO;
257 goto out;
258 }
259
260 /* read first 10 bytes, including tag, paramsize, and result */
261 if ((size =
262 recv_data(chip, buf, TPM_HEADER_SIZE)) < TPM_HEADER_SIZE) {
1/*
2 * Copyright (C) 2005, 2006 IBM Corporation
3 * Copyright (C) 2014, 2015 Intel Corporation
4 *
5 * Authors:
6 * Leendert van Doorn <leendert@watson.ibm.com>
7 * Kylene Hall <kjhall@us.ibm.com>
8 *

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

255 if (count < TPM_HEADER_SIZE) {
256 size = -EIO;
257 goto out;
258 }
259
260 /* read first 10 bytes, including tag, paramsize, and result */
261 if ((size =
262 recv_data(chip, buf, TPM_HEADER_SIZE)) < TPM_HEADER_SIZE) {
263 dev_err(chip->pdev, "Unable to read header\n");
263 dev_err(&chip->dev, "Unable to read header\n");
264 goto out;
265 }
266
267 expected = be32_to_cpu(*(__be32 *) (buf + 2));
268 if (expected > count) {
269 size = -EIO;
270 goto out;
271 }
272
273 if ((size +=
274 recv_data(chip, &buf[TPM_HEADER_SIZE],
275 expected - TPM_HEADER_SIZE)) < expected) {
264 goto out;
265 }
266
267 expected = be32_to_cpu(*(__be32 *) (buf + 2));
268 if (expected > count) {
269 size = -EIO;
270 goto out;
271 }
272
273 if ((size +=
274 recv_data(chip, &buf[TPM_HEADER_SIZE],
275 expected - TPM_HEADER_SIZE)) < expected) {
276 dev_err(chip->pdev, "Unable to read remainder of result\n");
276 dev_err(&chip->dev, "Unable to read remainder of result\n");
277 size = -ETIME;
278 goto out;
279 }
280
281 wait_for_tpm_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
282 &chip->vendor.int_queue, false);
283 status = tpm_tis_status(chip);
284 if (status & TPM_STS_DATA_AVAIL) { /* retry? */
277 size = -ETIME;
278 goto out;
279 }
280
281 wait_for_tpm_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
282 &chip->vendor.int_queue, false);
283 status = tpm_tis_status(chip);
284 if (status & TPM_STS_DATA_AVAIL) { /* retry? */
285 dev_err(chip->pdev, "Error left over data\n");
285 dev_err(&chip->dev, "Error left over data\n");
286 size = -EIO;
287 goto out;
288 }
289
290out:
291 tpm_tis_ready(chip);
292 release_locality(chip, chip->vendor.locality, 0);
293 return size;

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

363
364 intmask =
365 ioread32(chip->vendor.iobase +
366 TPM_INT_ENABLE(chip->vendor.locality));
367 intmask &= ~TPM_GLOBAL_INT_ENABLE;
368 iowrite32(intmask,
369 chip->vendor.iobase +
370 TPM_INT_ENABLE(chip->vendor.locality));
286 size = -EIO;
287 goto out;
288 }
289
290out:
291 tpm_tis_ready(chip);
292 release_locality(chip, chip->vendor.locality, 0);
293 return size;

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

363
364 intmask =
365 ioread32(chip->vendor.iobase +
366 TPM_INT_ENABLE(chip->vendor.locality));
367 intmask &= ~TPM_GLOBAL_INT_ENABLE;
368 iowrite32(intmask,
369 chip->vendor.iobase +
370 TPM_INT_ENABLE(chip->vendor.locality));
371 devm_free_irq(chip->pdev, chip->vendor.irq, chip);
371 devm_free_irq(&chip->dev, chip->vendor.irq, chip);
372 chip->vendor.irq = 0;
373}
374
375/*
376 * If interrupts are used (signaled by an irq set in the vendor structure)
377 * tpm.c can skip polling for the data to be available as the interrupt is
378 * waited for here
379 */

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

492
493 tpm_tis_ready(chip);
494 release_locality(chip, chip->vendor.locality, 0);
495
496 itpm = true;
497
498 rc = tpm_tis_send_data(chip, cmd_getticks, len);
499 if (rc == 0) {
372 chip->vendor.irq = 0;
373}
374
375/*
376 * If interrupts are used (signaled by an irq set in the vendor structure)
377 * tpm.c can skip polling for the data to be available as the interrupt is
378 * waited for here
379 */

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492
493 tpm_tis_ready(chip);
494 release_locality(chip, chip->vendor.locality, 0);
495
496 itpm = true;
497
498 rc = tpm_tis_send_data(chip, cmd_getticks, len);
499 if (rc == 0) {
500 dev_info(chip->pdev, "Detected an iTPM.\n");
500 dev_info(&chip->dev, "Detected an iTPM.\n");
501 rc = 1;
502 } else
503 rc = -EFAULT;
504
505out:
506 itpm = rem_itpm;
507 tpm_tis_ready(chip);
508 release_locality(chip, chip->vendor.locality, 0);

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571 * everything and leave in polling mode. Returns 0 on success.
572 */
573static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask,
574 int flags, int irq)
575{
576 struct priv_data *priv = chip->vendor.priv;
577 u8 original_int_vec;
578
501 rc = 1;
502 } else
503 rc = -EFAULT;
504
505out:
506 itpm = rem_itpm;
507 tpm_tis_ready(chip);
508 release_locality(chip, chip->vendor.locality, 0);

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

571 * everything and leave in polling mode. Returns 0 on success.
572 */
573static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask,
574 int flags, int irq)
575{
576 struct priv_data *priv = chip->vendor.priv;
577 u8 original_int_vec;
578
579 if (devm_request_irq(chip->pdev, irq, tis_int_handler, flags,
579 if (devm_request_irq(&chip->dev, irq, tis_int_handler, flags,
580 chip->devname, chip) != 0) {
580 chip->devname, chip) != 0) {
581 dev_info(chip->pdev, "Unable to request irq: %d for probe\n",
581 dev_info(&chip->dev, "Unable to request irq: %d for probe\n",
582 irq);
583 return -1;
584 }
585 chip->vendor.irq = irq;
586
587 original_int_vec = ioread8(chip->vendor.iobase +
588 TPM_INT_VECTOR(chip->vendor.locality));
589 iowrite8(irq,

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774 /* INTERRUPT Setup */
775 init_waitqueue_head(&chip->vendor.read_queue);
776 init_waitqueue_head(&chip->vendor.int_queue);
777 if (interrupts && tpm_info->irq != -1) {
778 if (tpm_info->irq) {
779 tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED,
780 tpm_info->irq);
781 if (!chip->vendor.irq)
582 irq);
583 return -1;
584 }
585 chip->vendor.irq = irq;
586
587 original_int_vec = ioread8(chip->vendor.iobase +
588 TPM_INT_VECTOR(chip->vendor.locality));
589 iowrite8(irq,

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774 /* INTERRUPT Setup */
775 init_waitqueue_head(&chip->vendor.read_queue);
776 init_waitqueue_head(&chip->vendor.int_queue);
777 if (interrupts && tpm_info->irq != -1) {
778 if (tpm_info->irq) {
779 tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED,
780 tpm_info->irq);
781 if (!chip->vendor.irq)
782 dev_err(chip->pdev, FW_BUG
782 dev_err(&chip->dev, FW_BUG
783 "TPM interrupt not working, polling instead\n");
784 } else
785 tpm_tis_probe_irq(chip, intmask);
786 }
787
788 if (chip->flags & TPM_CHIP_FLAG_TPM2) {
789 rc = tpm2_do_selftest(chip);
790 if (rc == TPM2_RC_INITIALIZE) {

--- 360 unchanged lines hidden --- 		783 "TPM interrupt not working, polling instead\n");
784 } else
785 tpm_tis_probe_irq(chip, intmask);
786 }
787
788 if (chip->flags & TPM_CHIP_FLAG_TPM2) {
789 rc = tpm2_do_selftest(chip);
790 if (rc == TPM2_RC_INITIALIZE) {

--- 360 unchanged lines hidden ---