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| author | Kishon Vijay Abraham I <kishon@ti.com> | 2017-08-18 20:28:05 +0530 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-08-29 16:00:39 -0500 |
| commit | 834b9051992580ac8fd3966d023b911ad77d5b8d (patch) | |
| tree | 2aa379255657dd7c83362b969b0547e875a8fba7 /drivers/misc | |
| parent | 1d36eb58c34d0557b056e3724fd9de25e1ec90be (diff) | |
| download | linux-834b9051992580ac8fd3966d023b911ad77d5b8d.tar.gz linux-834b9051992580ac8fd3966d023b911ad77d5b8d.tar.bz2 linux-834b9051992580ac8fd3966d023b911ad77d5b8d.zip | |
misc: pci_endpoint_test: Add support for PCI_ENDPOINT_TEST regs to be mapped to any BAR
pci_endpoint_test driver assumes the PCI_ENDPOINT_TEST registers will
always be mapped to BAR_0. This need not always be the case like in TI's
K2G where BAR_0 is mapped to PCI controller application registers.
Add support so that PCI_ENDPOINT_TEST registers can be mapped to any BAR.
Change the bar_size used for BAR test accordingly.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/pci_endpoint_test.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 09c10f426b64..5fc0f6c6a9e5 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -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; } |