misc: pci_endpoint_test: Add support for PCI_ENDPOINT_TEST regs to be mapped to any BAR (834b9051) · Commits · 戴 / test

drivers/misc/pci_endpoint_test.c

+21 −4

Original line number	Diff line number	Diff line
		@@ -90,9 +90,14 @@ struct pci_endpoint_test {
		/* mutex to protect the ioctls */
		struct mutex mutex;
		struct miscdevice miscdev;
		enum pci_barno test_reg_bar;
		};

		static int bar_size[] = { 4, 512, 1024, 16384, 131072, 1048576 };
		struct pci_endpoint_test_data {
		enum pci_barno test_reg_bar;
		};

		static int bar_size[] = { 512, 512, 1024, 16384, 131072, 1048576 };

		static inline u32 pci_endpoint_test_readl(struct pci_endpoint_test *test,
		u32 offset)
		@@ -147,6 +152,9 @@ static bool pci_endpoint_test_bar(struct pci_endpoint_test *test,

		size = bar_size[barno];

		if (barno == test->test_reg_bar)
		size = 0x4;

		for (j = 0; j < size; j += 4)
		pci_endpoint_test_bar_writel(test, barno, j, 0xA0A0A0A0);

		@@ -390,6 +398,8 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
		void __iomem *base;
		struct device *dev = &pdev->dev;
		struct pci_endpoint_test *test;
		struct pci_endpoint_test_data *data;
		enum pci_barno test_reg_bar = BAR_0;
		struct miscdevice *misc_device;

		if (pci_is_bridge(pdev))
		@@ -399,7 +409,13 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
		if (!test)
		return -ENOMEM;

		test->test_reg_bar = 0;
		test->pdev = pdev;

		data = (struct pci_endpoint_test_data *)ent->driver_data;
		if (data)
		test_reg_bar = data->test_reg_bar;

		init_completion(&test->irq_raised);
		mutex_init(&test->mutex);

		@@ -441,14 +457,15 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
		base = pci_ioremap_bar(pdev, bar);
		if (!base) {
		dev_err(dev, "failed to read BAR%d\n", bar);
		WARN_ON(bar == BAR_0);
		WARN_ON(bar == test_reg_bar);
		}
		test->bar[bar] = base;
		}

		test->base = test->bar[0];
		test->base = test->bar[test_reg_bar];
		if (!test->base) {
		dev_err(dev, "Cannot perform PCI test without BAR0\n");
		dev_err(dev, "Cannot perform PCI test without BAR%d\n",
		test_reg_bar);
		goto err_iounmap;
		}

Admin message