diff options
Diffstat (limited to 'drivers/misc/pci_endpoint_test.c')
| -rw-r--r-- | drivers/misc/pci_endpoint_test.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 3aaaf47fa4ee..8a31bd4c237d 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -69,6 +69,9 @@ #define PCI_ENDPOINT_TEST_FLAGS 0x2c #define FLAG_USE_DMA BIT(0) +#define PCI_ENDPOINT_TEST_CAPS 0x30 +#define CAP_UNALIGNED_ACCESS BIT(0) + #define PCI_DEVICE_ID_TI_AM654 0xb00c #define PCI_DEVICE_ID_TI_J7200 0xb00f #define PCI_DEVICE_ID_TI_AM64 0xb010 @@ -805,6 +808,20 @@ static const struct file_operations pci_endpoint_test_fops = { .unlocked_ioctl = pci_endpoint_test_ioctl, }; +static void pci_endpoint_test_get_capabilities(struct pci_endpoint_test *test) +{ + struct pci_dev *pdev = test->pdev; + struct device *dev = &pdev->dev; + u32 caps; + + caps = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CAPS); + dev_dbg(dev, "PCI_ENDPOINT_TEST_CAPS: %#x\n", caps); + + /* CAP_UNALIGNED_ACCESS is set if the EP can do unaligned access */ + if (caps & CAP_UNALIGNED_ACCESS) + test->alignment = 0; +} + static int pci_endpoint_test_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { @@ -906,6 +923,8 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev, goto err_kfree_test_name; } + pci_endpoint_test_get_capabilities(test); + misc_device = &test->miscdev; misc_device->minor = MISC_DYNAMIC_MINOR; misc_device->name = kstrdup(name, GFP_KERNEL); |