160 static int wait_startup(struct tpm_chip *chip, int l)  in wait_startup()  argument
162 	unsigned long stop = jiffies + chip->vendor.timeout_a;  in wait_startup()
164 		if (ioread8(chip->vendor.iobase + TPM_ACCESS(l)) &  in wait_startup()
172 static int check_locality(struct tpm_chip *chip, int l)  in check_locality()  argument
174 	if ((ioread8(chip->vendor.iobase + TPM_ACCESS(l)) &  in check_locality()
177 		return chip->vendor.locality = l;  in check_locality()
182 static void release_locality(struct tpm_chip *chip, int l, int force)  in release_locality()  argument
184 	if (force || (ioread8(chip->vendor.iobase + TPM_ACCESS(l)) &  in release_locality()
188 			 chip->vendor.iobase + TPM_ACCESS(l));  in release_locality()
191 static int request_locality(struct tpm_chip *chip, int l)  in request_locality()  argument
196 	if (check_locality(chip, l) >= 0)  in request_locality()
200 		 chip->vendor.iobase + TPM_ACCESS(l));  in request_locality()
202 	stop = jiffies + chip->vendor.timeout_a;  in request_locality()
204 	if (chip->vendor.irq) {  in request_locality()
209 		rc = wait_event_interruptible_timeout(chip->vendor.int_queue,  in request_locality()
211 						       (chip, l) >= 0),  in request_locality()
222 			if (check_locality(chip, l) >= 0)  in request_locality()
231 static u8 tpm_tis_status(struct tpm_chip *chip)  in tpm_tis_status()  argument
233 	return ioread8(chip->vendor.iobase +  in tpm_tis_status()
234 		       TPM_STS(chip->vendor.locality));  in tpm_tis_status()
237 static void tpm_tis_ready(struct tpm_chip *chip)  in tpm_tis_ready()  argument
241 		 chip->vendor.iobase + TPM_STS(chip->vendor.locality));  in tpm_tis_ready()
244 static int get_burstcount(struct tpm_chip *chip)  in get_burstcount()  argument
251 	stop = jiffies + chip->vendor.timeout_d;  in get_burstcount()
253 		burstcnt = ioread8(chip->vendor.iobase +  in get_burstcount()
254 				   TPM_STS(chip->vendor.locality) + 1);  in get_burstcount()
255 		burstcnt += ioread8(chip->vendor.iobase +  in get_burstcount()
256 				    TPM_STS(chip->vendor.locality) +  in get_burstcount()
265 static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)  in recv_data()  argument
269 	       wait_for_tpm_stat(chip,  in recv_data()
271 				 chip->vendor.timeout_c,  in recv_data()
272 				 &chip->vendor.read_queue, true)  in recv_data()
274 		burstcnt = get_burstcount(chip);  in recv_data()
276 			buf[size++] = ioread8(chip->vendor.iobase +  in recv_data()
277 					      TPM_DATA_FIFO(chip->vendor.  in recv_data()
283 static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)  in tpm_tis_recv()  argument
295 	     recv_data(chip, buf, TPM_HEADER_SIZE)) < TPM_HEADER_SIZE) {  in tpm_tis_recv()
296 		dev_err(chip->pdev, "Unable to read header\n");  in tpm_tis_recv()
307 	     recv_data(chip, &buf[TPM_HEADER_SIZE],  in tpm_tis_recv()
309 		dev_err(chip->pdev, "Unable to read remainder of result\n");  in tpm_tis_recv()
314 	wait_for_tpm_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,  in tpm_tis_recv()
315 			  &chip->vendor.int_queue, false);  in tpm_tis_recv()
316 	status = tpm_tis_status(chip);  in tpm_tis_recv()
318 		dev_err(chip->pdev, "Error left over data\n");  in tpm_tis_recv()
324 	tpm_tis_ready(chip);  in tpm_tis_recv()
325 	release_locality(chip, chip->vendor.locality, 0);  in tpm_tis_recv()
338 static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)  in tpm_tis_send_data()  argument
343 	if (request_locality(chip, 0) < 0)  in tpm_tis_send_data()
346 	status = tpm_tis_status(chip);  in tpm_tis_send_data()
348 		tpm_tis_ready(chip);  in tpm_tis_send_data()
350 		    (chip, TPM_STS_COMMAND_READY, chip->vendor.timeout_b,  in tpm_tis_send_data()
351 		     &chip->vendor.int_queue, false) < 0) {  in tpm_tis_send_data()
358 		burstcnt = get_burstcount(chip);  in tpm_tis_send_data()
360 			iowrite8(buf[count], chip->vendor.iobase +  in tpm_tis_send_data()
361 				 TPM_DATA_FIFO(chip->vendor.locality));  in tpm_tis_send_data()
365 		wait_for_tpm_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,  in tpm_tis_send_data()
366 				  &chip->vendor.int_queue, false);  in tpm_tis_send_data()
367 		status = tpm_tis_status(chip);  in tpm_tis_send_data()
376 		 chip->vendor.iobase + TPM_DATA_FIFO(chip->vendor.locality));  in tpm_tis_send_data()
377 	wait_for_tpm_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,  in tpm_tis_send_data()
378 			  &chip->vendor.int_queue, false);  in tpm_tis_send_data()
379 	status = tpm_tis_status(chip);  in tpm_tis_send_data()
388 	tpm_tis_ready(chip);  in tpm_tis_send_data()
389 	release_locality(chip, chip->vendor.locality, 0);  in tpm_tis_send_data()
393 static void disable_interrupts(struct tpm_chip *chip)  in disable_interrupts()  argument
398 	    ioread32(chip->vendor.iobase +  in disable_interrupts()
399 		     TPM_INT_ENABLE(chip->vendor.locality));  in disable_interrupts()
402 		  chip->vendor.iobase +  in disable_interrupts()
403 		  TPM_INT_ENABLE(chip->vendor.locality));  in disable_interrupts()
404 	free_irq(chip->vendor.irq, chip);  in disable_interrupts()
405 	chip->vendor.irq = 0;  in disable_interrupts()
413 static int tpm_tis_send_main(struct tpm_chip *chip, u8 *buf, size_t len)  in tpm_tis_send_main()  argument
419 	rc = tpm_tis_send_data(chip, buf, len);  in tpm_tis_send_main()
425 		 chip->vendor.iobase + TPM_STS(chip->vendor.locality));  in tpm_tis_send_main()
427 	if (chip->vendor.irq) {  in tpm_tis_send_main()
430 		if (chip->flags & TPM_CHIP_FLAG_TPM2)  in tpm_tis_send_main()
431 			dur = tpm2_calc_ordinal_duration(chip, ordinal);  in tpm_tis_send_main()
433 			dur = tpm_calc_ordinal_duration(chip, ordinal);  in tpm_tis_send_main()
436 		    (chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID, dur,  in tpm_tis_send_main()
437 		     &chip->vendor.read_queue, false) < 0) {  in tpm_tis_send_main()
444 	tpm_tis_ready(chip);  in tpm_tis_send_main()
445 	release_locality(chip, chip->vendor.locality, 0);  in tpm_tis_send_main()
449 static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len)  in tpm_tis_send()  argument
452 	struct priv_data *priv = chip->vendor.priv;  in tpm_tis_send()
454 	if (!chip->vendor.irq || priv->irq_tested)  in tpm_tis_send()
455 		return tpm_tis_send_main(chip, buf, len);  in tpm_tis_send()
458 	irq = chip->vendor.irq;  in tpm_tis_send()
459 	chip->vendor.irq = 0;  in tpm_tis_send()
460 	rc = tpm_tis_send_main(chip, buf, len);  in tpm_tis_send()
461 	chip->vendor.irq = irq;  in tpm_tis_send()
465 		disable_interrupts(chip);  in tpm_tis_send()
466 		dev_err(chip->pdev,  in tpm_tis_send()
484 static bool tpm_tis_update_timeouts(struct tpm_chip *chip,  in tpm_tis_update_timeouts()  argument
490 	did_vid = ioread32(chip->vendor.iobase + TPM_DID_VID(0));  in tpm_tis_update_timeouts()
508 static int probe_itpm(struct tpm_chip *chip)  in probe_itpm()  argument
517 	u16 vendor = ioread16(chip->vendor.iobase + TPM_DID_VID(0));  in probe_itpm()
525 	rc = tpm_tis_send_data(chip, cmd_getticks, len);  in probe_itpm()
529 	tpm_tis_ready(chip);  in probe_itpm()
530 	release_locality(chip, chip->vendor.locality, 0);  in probe_itpm()
534 	rc = tpm_tis_send_data(chip, cmd_getticks, len);  in probe_itpm()
536 		dev_info(chip->pdev, "Detected an iTPM.\n");  in probe_itpm()
543 	tpm_tis_ready(chip);  in probe_itpm()
544 	release_locality(chip, chip->vendor.locality, 0);  in probe_itpm()
549 static bool tpm_tis_req_canceled(struct tpm_chip *chip, u8 status)  in tpm_tis_req_canceled()  argument
551 	switch (chip->vendor.manufacturer_id) {  in tpm_tis_req_canceled()
575 	struct tpm_chip *chip = dev_id;  in tis_int_probe()  local
578 	interrupt = ioread32(chip->vendor.iobase +  in tis_int_probe()
579 			     TPM_INT_STATUS(chip->vendor.locality));  in tis_int_probe()
584 	chip->vendor.probed_irq = irq;  in tis_int_probe()
588 		  chip->vendor.iobase +  in tis_int_probe()
589 		  TPM_INT_STATUS(chip->vendor.locality));  in tis_int_probe()
595 	struct tpm_chip *chip = dev_id;  in tis_int_handler()  local
599 	interrupt = ioread32(chip->vendor.iobase +  in tis_int_handler()
600 			     TPM_INT_STATUS(chip->vendor.locality));  in tis_int_handler()
605 	((struct priv_data *)chip->vendor.priv)->irq_tested = true;  in tis_int_handler()
607 		wake_up_interruptible(&chip->vendor.read_queue);  in tis_int_handler()
610 			if (check_locality(chip, i) >= 0)  in tis_int_handler()
615 		wake_up_interruptible(&chip->vendor.int_queue);  in tis_int_handler()
619 		  chip->vendor.iobase +  in tis_int_handler()
620 		  TPM_INT_STATUS(chip->vendor.locality));  in tis_int_handler()
621 	ioread32(chip->vendor.iobase + TPM_INT_STATUS(chip->vendor.locality));  in tis_int_handler()
629 static void tpm_tis_remove(struct tpm_chip *chip)  in tpm_tis_remove()  argument
631 	if (chip->flags & TPM_CHIP_FLAG_TPM2)  in tpm_tis_remove()
632 		tpm2_shutdown(chip, TPM2_SU_CLEAR);  in tpm_tis_remove()
635 		  ioread32(chip->vendor.iobase +  in tpm_tis_remove()
636 			   TPM_INT_ENABLE(chip->vendor.  in tpm_tis_remove()
638 		  chip->vendor.iobase +  in tpm_tis_remove()
639 		  TPM_INT_ENABLE(chip->vendor.locality));  in tpm_tis_remove()
640 	release_locality(chip, chip->vendor.locality, 1);  in tpm_tis_remove()
649 	struct tpm_chip *chip;  in tpm_tis_init()  local
656 	chip = tpmm_chip_alloc(dev, &tpm_tis);  in tpm_tis_init()
657 	if (IS_ERR(chip))  in tpm_tis_init()
658 		return PTR_ERR(chip);  in tpm_tis_init()
660 	chip->vendor.priv = priv;  in tpm_tis_init()
662 	chip->acpi_dev_handle = acpi_dev_handle;  in tpm_tis_init()
665 	chip->vendor.iobase = devm_ioremap(dev, tpm_info->start, tpm_info->len);  in tpm_tis_init()
666 	if (!chip->vendor.iobase)  in tpm_tis_init()
670 	chip->vendor.timeout_a = TIS_TIMEOUT_A_MAX;  in tpm_tis_init()
671 	chip->vendor.timeout_b = TIS_TIMEOUT_B_MAX;  in tpm_tis_init()
672 	chip->vendor.timeout_c = TIS_TIMEOUT_C_MAX;  in tpm_tis_init()
673 	chip->vendor.timeout_d = TIS_TIMEOUT_D_MAX;  in tpm_tis_init()
675 	if (wait_startup(chip, 0) != 0) {  in tpm_tis_init()
680 	if (request_locality(chip, 0) != 0) {  in tpm_tis_init()
685 	rc = tpm2_probe(chip);  in tpm_tis_init()
689 	vendor = ioread32(chip->vendor.iobase + TPM_DID_VID(0));  in tpm_tis_init()
690 	chip->vendor.manufacturer_id = vendor;  in tpm_tis_init()
693 		 (chip->flags & TPM_CHIP_FLAG_TPM2) ? "2.0" : "1.2",  in tpm_tis_init()
694 		 vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0)));  in tpm_tis_init()
697 		probe = probe_itpm(chip);  in tpm_tis_init()
711 	    ioread32(chip->vendor.iobase +  in tpm_tis_init()
712 		     TPM_INTF_CAPS(chip->vendor.locality));  in tpm_tis_init()
735 	init_waitqueue_head(&chip->vendor.read_queue);  in tpm_tis_init()
736 	init_waitqueue_head(&chip->vendor.int_queue);  in tpm_tis_init()
739 	    ioread32(chip->vendor.iobase +  in tpm_tis_init()
740 		     TPM_INT_ENABLE(chip->vendor.locality));  in tpm_tis_init()
747 		  chip->vendor.iobase +  in tpm_tis_init()
748 		  TPM_INT_ENABLE(chip->vendor.locality));  in tpm_tis_init()
750 		chip->vendor.irq = tpm_info->irq;  in tpm_tis_init()
751 	if (interrupts && !chip->vendor.irq) {  in tpm_tis_init()
753 		    ioread8(chip->vendor.iobase +  in tpm_tis_init()
754 			    TPM_INT_VECTOR(chip->vendor.locality));  in tpm_tis_init()
763 		for (i = irq_s; i <= irq_e && chip->vendor.irq == 0; i++) {  in tpm_tis_init()
764 			iowrite8(i, chip->vendor.iobase +  in tpm_tis_init()
765 				 TPM_INT_VECTOR(chip->vendor.locality));  in tpm_tis_init()
768 			     chip->devname, chip) != 0) {  in tpm_tis_init()
769 				dev_info(chip->pdev,  in tpm_tis_init()
777 				  (chip->vendor.iobase +  in tpm_tis_init()
778 				   TPM_INT_STATUS(chip->vendor.locality)),  in tpm_tis_init()
779 				  chip->vendor.iobase +  in tpm_tis_init()
780 				  TPM_INT_STATUS(chip->vendor.locality));  in tpm_tis_init()
784 				  chip->vendor.iobase +  in tpm_tis_init()
785 				  TPM_INT_ENABLE(chip->vendor.locality));  in tpm_tis_init()
787 			chip->vendor.probed_irq = 0;  in tpm_tis_init()
790 			if (chip->flags & TPM_CHIP_FLAG_TPM2)  in tpm_tis_init()
791 				tpm2_gen_interrupt(chip);  in tpm_tis_init()
793 				tpm_gen_interrupt(chip);  in tpm_tis_init()
795 			chip->vendor.irq = chip->vendor.probed_irq;  in tpm_tis_init()
801 				  (chip->vendor.iobase +  in tpm_tis_init()
802 				   TPM_INT_STATUS(chip->vendor.locality)),  in tpm_tis_init()
803 				  chip->vendor.iobase +  in tpm_tis_init()
804 				  TPM_INT_STATUS(chip->vendor.locality));  in tpm_tis_init()
808 				  chip->vendor.iobase +  in tpm_tis_init()
809 				  TPM_INT_ENABLE(chip->vendor.locality));  in tpm_tis_init()
811 			devm_free_irq(dev, i, chip);  in tpm_tis_init()
814 	if (chip->vendor.irq) {  in tpm_tis_init()
815 		iowrite8(chip->vendor.irq,  in tpm_tis_init()
816 			 chip->vendor.iobase +  in tpm_tis_init()
817 			 TPM_INT_VECTOR(chip->vendor.locality));  in tpm_tis_init()
819 		    (dev, chip->vendor.irq, tis_int_handler, IRQF_SHARED,  in tpm_tis_init()
820 		     chip->devname, chip) != 0) {  in tpm_tis_init()
821 			dev_info(chip->pdev,  in tpm_tis_init()
823 				 chip->vendor.irq);  in tpm_tis_init()
824 			chip->vendor.irq = 0;  in tpm_tis_init()
828 				  (chip->vendor.iobase +  in tpm_tis_init()
829 				   TPM_INT_STATUS(chip->vendor.locality)),  in tpm_tis_init()
830 				  chip->vendor.iobase +  in tpm_tis_init()
831 				  TPM_INT_STATUS(chip->vendor.locality));  in tpm_tis_init()
835 				  chip->vendor.iobase +  in tpm_tis_init()
836 				  TPM_INT_ENABLE(chip->vendor.locality));  in tpm_tis_init()
839 		iowrite8(irq_r, chip->vendor.iobase +  in tpm_tis_init()
840 			 TPM_INT_VECTOR(chip->vendor.locality));  in tpm_tis_init()
842 	if (chip->flags & TPM_CHIP_FLAG_TPM2) {  in tpm_tis_init()
843 		chip->vendor.timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);  in tpm_tis_init()
844 		chip->vendor.timeout_b = msecs_to_jiffies(TPM2_TIMEOUT_B);  in tpm_tis_init()
845 		chip->vendor.timeout_c = msecs_to_jiffies(TPM2_TIMEOUT_C);  in tpm_tis_init()
846 		chip->vendor.timeout_d = msecs_to_jiffies(TPM2_TIMEOUT_D);  in tpm_tis_init()
847 		chip->vendor.duration[TPM_SHORT] =  in tpm_tis_init()
849 		chip->vendor.duration[TPM_MEDIUM] =  in tpm_tis_init()
851 		chip->vendor.duration[TPM_LONG] =  in tpm_tis_init()
854 		rc = tpm2_do_selftest(chip);  in tpm_tis_init()
857 			rc  = tpm2_startup(chip, TPM2_SU_CLEAR);  in tpm_tis_init()
859 				rc = tpm2_do_selftest(chip);  in tpm_tis_init()
869 		if (tpm_get_timeouts(chip)) {  in tpm_tis_init()
875 		if (tpm_do_selftest(chip)) {  in tpm_tis_init()
882 	return tpm_chip_register(chip);  in tpm_tis_init()
884 	tpm_tis_remove(chip);  in tpm_tis_init()
889 static void tpm_tis_reenable_interrupts(struct tpm_chip *chip)  in tpm_tis_reenable_interrupts()  argument
895 	iowrite8(chip->vendor.irq, chip->vendor.iobase +  in tpm_tis_reenable_interrupts()
896 		 TPM_INT_VECTOR(chip->vendor.locality));  in tpm_tis_reenable_interrupts()
899 	    ioread32(chip->vendor.iobase +  in tpm_tis_reenable_interrupts()
900 		     TPM_INT_ENABLE(chip->vendor.locality));  in tpm_tis_reenable_interrupts()
907 		  chip->vendor.iobase + TPM_INT_ENABLE(chip->vendor.locality));  in tpm_tis_reenable_interrupts()
912 	struct tpm_chip *chip = dev_get_drvdata(dev);  in tpm_tis_resume()  local
915 	if (chip->vendor.irq)  in tpm_tis_resume()
916 		tpm_tis_reenable_interrupts(chip);  in tpm_tis_resume()
925 	if (!(chip->flags & TPM_CHIP_FLAG_TPM2))  in tpm_tis_resume()
926 		tpm_do_selftest(chip);  in tpm_tis_resume()
977 	struct tpm_chip *chip = pnp_get_drvdata(dev);  in tpm_tis_pnp_remove()  local
979 	tpm_chip_unregister(chip);  in tpm_tis_pnp_remove()
980 	tpm_tis_remove(chip);  in tpm_tis_pnp_remove()
1043 	struct tpm_chip *chip = dev_get_drvdata(&dev->dev);  in tpm_tis_acpi_remove()  local
1045 	tpm_chip_unregister(chip);  in tpm_tis_acpi_remove()
1046 	tpm_tis_remove(chip);  in tpm_tis_acpi_remove()
1129 	struct tpm_chip *chip;  in cleanup_tis()  local
1141 	chip = dev_get_drvdata(&pdev->dev);  in cleanup_tis()
1142 	tpm_chip_unregister(chip);  in cleanup_tis()
1143 	tpm_tis_remove(chip);  in cleanup_tis()