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()
335 static bool pci_endpoint_test_copy(struct pci_endpoint_test *test,  in pci_endpoint_test_copy()  argument
347 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_copy()
354 	size_t alignment = test->alignment;  in pci_endpoint_test_copy()
355 	int irq_type = test->irq_type;  in pci_endpoint_test_copy()
404 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_SRC_ADDR,  in pci_endpoint_test_copy()
407 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_SRC_ADDR,  in pci_endpoint_test_copy()
436 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_DST_ADDR,  in pci_endpoint_test_copy()
438 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_DST_ADDR,  in pci_endpoint_test_copy()
441 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE,  in pci_endpoint_test_copy()
444 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);  in pci_endpoint_test_copy()
445 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);  in pci_endpoint_test_copy()
446 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);  in pci_endpoint_test_copy()
447 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,  in pci_endpoint_test_copy()
450 	wait_for_completion(&test->irq_raised);  in pci_endpoint_test_copy()
473 static bool pci_endpoint_test_write(struct pci_endpoint_test *test,  in pci_endpoint_test_write()  argument
483 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_write()
488 	size_t alignment = test->alignment;  in pci_endpoint_test_write()
489 	int irq_type = test->irq_type;  in pci_endpoint_test_write()
540 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_CHECKSUM,  in pci_endpoint_test_write()
543 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_SRC_ADDR,  in pci_endpoint_test_write()
545 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_SRC_ADDR,  in pci_endpoint_test_write()
548 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE, size);  in pci_endpoint_test_write()
550 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);  in pci_endpoint_test_write()
551 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);  in pci_endpoint_test_write()
552 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);  in pci_endpoint_test_write()
553 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,  in pci_endpoint_test_write()
556 	wait_for_completion(&test->irq_raised);  in pci_endpoint_test_write()
558 	reg = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS);  in pci_endpoint_test_write()
572 static bool pci_endpoint_test_read(struct pci_endpoint_test *test,  in pci_endpoint_test_read()  argument
582 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_read()
587 	size_t alignment = test->alignment;  in pci_endpoint_test_read()
588 	int irq_type = test->irq_type;  in pci_endpoint_test_read()
635 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_DST_ADDR,  in pci_endpoint_test_read()
637 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_DST_ADDR,  in pci_endpoint_test_read()
640 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE, size);  in pci_endpoint_test_read()
642 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);  in pci_endpoint_test_read()
643 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);  in pci_endpoint_test_read()
644 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);  in pci_endpoint_test_read()
645 	pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,  in pci_endpoint_test_read()
648 	wait_for_completion(&test->irq_raised);  in pci_endpoint_test_read()
654 	if (crc32 == pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CHECKSUM))  in pci_endpoint_test_read()
663 static bool pci_endpoint_test_clear_irq(struct pci_endpoint_test *test)  in pci_endpoint_test_clear_irq()  argument
665 	pci_endpoint_test_release_irq(test);  in pci_endpoint_test_clear_irq()
666 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_clear_irq()
670 static bool pci_endpoint_test_set_irq(struct pci_endpoint_test *test,  in pci_endpoint_test_set_irq()  argument
673 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_set_irq()
681 	if (test->irq_type == req_irq_type)  in pci_endpoint_test_set_irq()
684 	pci_endpoint_test_release_irq(test);  in pci_endpoint_test_set_irq()
685 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_set_irq()
687 	if (!pci_endpoint_test_alloc_irq_vectors(test, req_irq_type))  in pci_endpoint_test_set_irq()
690 	if (!pci_endpoint_test_request_irq(test))  in pci_endpoint_test_set_irq()
696 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_set_irq()
705 	struct pci_endpoint_test *test = to_endpoint_test(file->private_data);  in pci_endpoint_test_ioctl()  local
706 	struct pci_dev *pdev = test->pdev;  in pci_endpoint_test_ioctl()
708 	mutex_lock(&test->mutex);  in pci_endpoint_test_ioctl()
716 		ret = pci_endpoint_test_bar(test, bar);  in pci_endpoint_test_ioctl()
719 		ret = pci_endpoint_test_legacy_irq(test);  in pci_endpoint_test_ioctl()
723 		ret = pci_endpoint_test_msi_irq(test, arg, cmd == PCITEST_MSIX);  in pci_endpoint_test_ioctl()
726 		ret = pci_endpoint_test_write(test, arg);  in pci_endpoint_test_ioctl()
729 		ret = pci_endpoint_test_read(test, arg);  in pci_endpoint_test_ioctl()
732 		ret = pci_endpoint_test_copy(test, arg);  in pci_endpoint_test_ioctl()
735 		ret = pci_endpoint_test_set_irq(test, arg);  in pci_endpoint_test_ioctl()
741 		ret = pci_endpoint_test_clear_irq(test);  in pci_endpoint_test_ioctl()
746 	mutex_unlock(&test->mutex);  in pci_endpoint_test_ioctl()
764 	struct pci_endpoint_test *test;  in pci_endpoint_test_probe()  local
772 	test = devm_kzalloc(dev, sizeof(*test), GFP_KERNEL);  in pci_endpoint_test_probe()
773 	if (!test)  in pci_endpoint_test_probe()
776 	test->test_reg_bar = 0;  in pci_endpoint_test_probe()
777 	test->alignment = 0;  in pci_endpoint_test_probe()
778 	test->pdev = pdev;  in pci_endpoint_test_probe()
779 	test->irq_type = IRQ_TYPE_UNDEFINED;  in pci_endpoint_test_probe()
787 		test->test_reg_bar = test_reg_bar;  in pci_endpoint_test_probe()
788 		test->alignment = data->alignment;  in pci_endpoint_test_probe()
792 	init_completion(&test->irq_raised);  in pci_endpoint_test_probe()
793 	mutex_init(&test->mutex);  in pci_endpoint_test_probe()
815 	if (!pci_endpoint_test_alloc_irq_vectors(test, irq_type)) {  in pci_endpoint_test_probe()
827 			test->bar[bar] = base;  in pci_endpoint_test_probe()
831 	test->base = test->bar[test_reg_bar];  in pci_endpoint_test_probe()
832 	if (!test->base) {  in pci_endpoint_test_probe()
834 		dev_err(dev, "Cannot perform PCI test without BAR%d\n",  in pci_endpoint_test_probe()
839 	pci_set_drvdata(pdev, test);  in pci_endpoint_test_probe()
849 	test->name = kstrdup(name, GFP_KERNEL);  in pci_endpoint_test_probe()
850 	if (!test->name) {  in pci_endpoint_test_probe()
855 	if (!pci_endpoint_test_request_irq(test)) {  in pci_endpoint_test_probe()
860 	misc_device = &test->miscdev;  in pci_endpoint_test_probe()
882 	pci_endpoint_test_release_irq(test);  in pci_endpoint_test_probe()
885 	kfree(test->name);  in pci_endpoint_test_probe()
892 		if (test->bar[bar])  in pci_endpoint_test_probe()
893 			pci_iounmap(pdev, test->bar[bar]);  in pci_endpoint_test_probe()
897 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_probe()
910 	struct pci_endpoint_test *test = pci_get_drvdata(pdev);  in pci_endpoint_test_remove()  local
911 	struct miscdevice *misc_device = &test->miscdev;  in pci_endpoint_test_remove()
918 	misc_deregister(&test->miscdev);  in pci_endpoint_test_remove()
920 	kfree(test->name);  in pci_endpoint_test_remove()
923 		if (test->bar[bar])  in pci_endpoint_test_remove()
924 			pci_iounmap(pdev, test->bar[bar]);  in pci_endpoint_test_remove()
927 	pci_endpoint_test_release_irq(test);  in pci_endpoint_test_remove()
928 	pci_endpoint_test_free_irq_vectors(test);  in pci_endpoint_test_remove()
994 MODULE_DESCRIPTION("PCI ENDPOINT TEST HOST DRIVER");