3  * Host side test driver to test endpoint functionality
28 #define DRV_MODULE_NAME				"pci-endpoint-test"
128 static inline u32 pci_endpoint_test_readl(struct pci_endpoint_test *test,  in pci_endpoint_test_readl()  argument
131 	return readl(test->base + offset);  in pci_endpoint_test_readl()
134 static inline void pci_endpoint_test_writel(struct pci_endpoint_test *test,  in pci_endpoint_test_writel()  argument
137 	writel(value, test->base + offset);  in pci_endpoint_test_writel()
140 static inline u32 pci_endpoint_test_bar_readl(struct pci_endpoint_test *test,  in pci_endpoint_test_bar_readl()  argument
143 	return readl(test->bar[bar] + offset);  in pci_endpoint_test_bar_readl()
146 static inline void pci_endpoint_test_bar_writel(struct pci_endpoint_test *test,  in pci_endpoint_test_bar_writel()  argument
149 	writel(value, test->bar[bar] + offset);  in pci_endpoint_test_bar_writel()
154 	struct pci_endpoint_test *test = dev_id;  in pci_endpoint_test_irqhandler()  local
157 	reg = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS);  in pci_endpoint_test_irqhandler()
159 		test->last_irq = irq;  in pci_endpoint_test_irqhandler()
160 		complete(&test->irq_raised);  in pci_endpoint_test_irqhandler()
163 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_STATUS,  in pci_endpoint_test_irqhandler()
169 static void pci_endpoint_test_free_irq_vectors(struct pci_endpoint_test *test)  in pci_endpoint_test_free_irq_vectors()  argument
171 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_free_irq_vectors()
174 	test->irq_type = IRQ_TYPE_UNDEFINED;  in pci_endpoint_test_free_irq_vectors()
177 static bool pci_endpoint_test_alloc_irq_vectors(struct pci_endpoint_test *test,  in pci_endpoint_test_alloc_irq_vectors()  argument
181 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_alloc_irq_vectors()
210 	test->irq_type = type;  in pci_endpoint_test_alloc_irq_vectors()
211 	test->num_irqs = irq;  in pci_endpoint_test_alloc_irq_vectors()
216 static void pci_endpoint_test_release_irq(struct pci_endpoint_test *test)  in pci_endpoint_test_release_irq()  argument
219 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_release_irq()
222 	for (i = 0; i < test->num_irqs; i++)  in pci_endpoint_test_release_irq()
223 		devm_free_irq(dev, pci_irq_vector(pdev, i), test);  in pci_endpoint_test_release_irq()
225 	test->num_irqs = 0;  in pci_endpoint_test_release_irq()
228 static bool pci_endpoint_test_request_irq(struct pci_endpoint_test *test)  in pci_endpoint_test_request_irq()  argument
232 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_request_irq()
235 	for (i = 0; i < test->num_irqs; i++) {  in pci_endpoint_test_request_irq()
238 				       IRQF_SHARED, test->name, test);  in pci_endpoint_test_request_irq()
266 static bool pci_endpoint_test_bar(struct pci_endpoint_test *test,  in pci_endpoint_test_bar()  argument
272 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_bar()
274 	if (!test->bar[barno])  in pci_endpoint_test_bar()
279 	if (barno == test->test_reg_bar)  in pci_endpoint_test_bar()
283 		pci_endpoint_test_bar_writel(test, barno, j, 0xA0A0A0A0);  in pci_endpoint_test_bar()
286 		val = pci_endpoint_test_bar_readl(test, barno, j);  in pci_endpoint_test_bar()
294 static bool pci_endpoint_test_legacy_irq(struct pci_endpoint_test *test)  in pci_endpoint_test_legacy_irq()  argument
298 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE,  in pci_endpoint_test_legacy_irq()
300 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 0);  in pci_endpoint_test_legacy_irq()
301 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,  in pci_endpoint_test_legacy_irq()
303 	val = wait_for_completion_timeout(&test->irq_raised,  in pci_endpoint_test_legacy_irq()
311 static bool pci_endpoint_test_msi_irq(struct pci_endpoint_test *test,  in pci_endpoint_test_msi_irq()  argument
315 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_msi_irq()
317 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE,  in pci_endpoint_test_msi_irq()
320 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, msi_num);  in pci_endpoint_test_msi_irq()
321 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,  in pci_endpoint_test_msi_irq()
324 	val = wait_for_completion_timeout(&test->irq_raised,  in pci_endpoint_test_msi_irq()
329 	if (pci_irq_vector(pdev, msi_num - 1) == test->last_irq)  in pci_endpoint_test_msi_irq()
351 static bool pci_endpoint_test_copy(struct pci_endpoint_test *test,  in pci_endpoint_test_copy()  argument
363 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_copy()
370 	size_t alignment = test->alignment;  in pci_endpoint_test_copy()
371 	int irq_type = test->irq_type;  in pci_endpoint_test_copy()
422 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_SRC_ADDR,  in pci_endpoint_test_copy()
425 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_SRC_ADDR,  in pci_endpoint_test_copy()
454 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_DST_ADDR,  in pci_endpoint_test_copy()
456 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_DST_ADDR,  in pci_endpoint_test_copy()
459 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE,  in pci_endpoint_test_copy()
462 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);  in pci_endpoint_test_copy()
463 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);  in pci_endpoint_test_copy()
464 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);  in pci_endpoint_test_copy()
465 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,  in pci_endpoint_test_copy()
468 	wait_for_completion(&test->irq_raised);  in pci_endpoint_test_copy()
491 static bool pci_endpoint_test_write(struct pci_endpoint_test *test,  in pci_endpoint_test_write()  argument
501 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_write()
506 	size_t alignment = test->alignment;  in pci_endpoint_test_write()
507 	int irq_type = test->irq_type;  in pci_endpoint_test_write()
560 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_CHECKSUM,  in pci_endpoint_test_write()
563 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_SRC_ADDR,  in pci_endpoint_test_write()
565 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_SRC_ADDR,  in pci_endpoint_test_write()
568 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE, size);  in pci_endpoint_test_write()
570 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);  in pci_endpoint_test_write()
571 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);  in pci_endpoint_test_write()
572 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);  in pci_endpoint_test_write()
573 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,  in pci_endpoint_test_write()
576 	wait_for_completion(&test->irq_raised);  in pci_endpoint_test_write()
578 	reg = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS);  in pci_endpoint_test_write()
592 static bool pci_endpoint_test_read(struct pci_endpoint_test *test,  in pci_endpoint_test_read()  argument
602 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_read()
607 	size_t alignment = test->alignment;  in pci_endpoint_test_read()
608 	int irq_type = test->irq_type;  in pci_endpoint_test_read()
657 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_DST_ADDR,  in pci_endpoint_test_read()
659 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_DST_ADDR,  in pci_endpoint_test_read()
662 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE, size);  in pci_endpoint_test_read()
664 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);  in pci_endpoint_test_read()
665 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);  in pci_endpoint_test_read()
666 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);  in pci_endpoint_test_read()
667 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,  in pci_endpoint_test_read()
670 	wait_for_completion(&test->irq_raised);  in pci_endpoint_test_read()
676 	if (crc32 == pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CHECKSUM))  in pci_endpoint_test_read()
685 static bool pci_endpoint_test_clear_irq(struct pci_endpoint_test *test)  in pci_endpoint_test_clear_irq()  argument
687 	pci_endpoint_test_release_irq(test);  in pci_endpoint_test_clear_irq()
688 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_clear_irq()
692 static bool pci_endpoint_test_set_irq(struct pci_endpoint_test *test,  in pci_endpoint_test_set_irq()  argument
695 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_set_irq()
703 	if (test->irq_type == req_irq_type)  in pci_endpoint_test_set_irq()
706 	pci_endpoint_test_release_irq(test);  in pci_endpoint_test_set_irq()
707 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_set_irq()
709 	if (!pci_endpoint_test_alloc_irq_vectors(test, req_irq_type))  in pci_endpoint_test_set_irq()
712 	if (!pci_endpoint_test_request_irq(test))  in pci_endpoint_test_set_irq()
718 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_set_irq()
727 	struct pci_endpoint_test *test = to_endpoint_test(file->private_data);  in pci_endpoint_test_ioctl()  local
728 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_ioctl()
730 	mutex_lock(&test->mutex);  in pci_endpoint_test_ioctl()
738 		ret = pci_endpoint_test_bar(test, bar);  in pci_endpoint_test_ioctl()
741 		ret = pci_endpoint_test_legacy_irq(test);  in pci_endpoint_test_ioctl()
745 		ret = pci_endpoint_test_msi_irq(test, arg, cmd == PCITEST_MSIX);  in pci_endpoint_test_ioctl()
748 		ret = pci_endpoint_test_write(test, arg);  in pci_endpoint_test_ioctl()
751 		ret = pci_endpoint_test_read(test, arg);  in pci_endpoint_test_ioctl()
754 		ret = pci_endpoint_test_copy(test, arg);  in pci_endpoint_test_ioctl()
757 		ret = pci_endpoint_test_set_irq(test, arg);  in pci_endpoint_test_ioctl()
763 		ret = pci_endpoint_test_clear_irq(test);  in pci_endpoint_test_ioctl()
768 	mutex_unlock(&test->mutex);  in pci_endpoint_test_ioctl()
786 	struct pci_endpoint_test *test;  in pci_endpoint_test_probe()  local
794 	test = devm_kzalloc(dev, sizeof(*test), GFP_KERNEL);  in pci_endpoint_test_probe()
795 	if (!test)  in pci_endpoint_test_probe()
798 	test->test_reg_bar = 0;  in pci_endpoint_test_probe()
799 	test->alignment = 0;  in pci_endpoint_test_probe()
800 	test->pdev = pdev;  in pci_endpoint_test_probe()
801 	test->irq_type = IRQ_TYPE_UNDEFINED;  in pci_endpoint_test_probe()
809 		test->test_reg_bar = test_reg_bar;  in pci_endpoint_test_probe()
810 		test->alignment = data->alignment;  in pci_endpoint_test_probe()
814 	init_completion(&test->irq_raised);  in pci_endpoint_test_probe()
815 	mutex_init(&test->mutex);  in pci_endpoint_test_probe()
837 	if (!pci_endpoint_test_alloc_irq_vectors(test, irq_type)) {  in pci_endpoint_test_probe()
849 			test->bar[bar] = base;  in pci_endpoint_test_probe()
853 	test->base = test->bar[test_reg_bar];  in pci_endpoint_test_probe()
854 	if (!test->base) {  in pci_endpoint_test_probe()
856 		dev_err(dev, "Cannot perform PCI test without BAR%d\n",  in pci_endpoint_test_probe()
861 	pci_set_drvdata(pdev, test);  in pci_endpoint_test_probe()
871 	test->name = kstrdup(name, GFP_KERNEL);  in pci_endpoint_test_probe()
872 	if (!test->name) {  in pci_endpoint_test_probe()
877 	if (!pci_endpoint_test_request_irq(test)) {  in pci_endpoint_test_probe()
882 	misc_device = &test->miscdev;  in pci_endpoint_test_probe()
904 	pci_endpoint_test_release_irq(test);  in pci_endpoint_test_probe()
907 	kfree(test->name);  in pci_endpoint_test_probe()
914 		if (test->bar[bar])  in pci_endpoint_test_probe()
915 			pci_iounmap(pdev, test->bar[bar]);  in pci_endpoint_test_probe()
919 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_probe()
932 	struct pci_endpoint_test *test = pci_get_drvdata(pdev);  in pci_endpoint_test_remove()  local
933 	struct miscdevice *misc_device = &test->miscdev;  in pci_endpoint_test_remove()
940 	misc_deregister(&test->miscdev);  in pci_endpoint_test_remove()
942 	kfree(test->name);  in pci_endpoint_test_remove()
945 		if (test->bar[bar])  in pci_endpoint_test_remove()
946 			pci_iounmap(pdev, test->bar[bar]);  in pci_endpoint_test_remove()
949 	pci_endpoint_test_release_irq(test);  in pci_endpoint_test_remove()
950 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_remove()
1016 MODULE_DESCRIPTION("PCI ENDPOINT TEST HOST DRIVER");