diff options
| author | Frank Li <Frank.Li@nxp.com> | 2025-07-10 22:13:53 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2025-07-25 00:51:46 +0300 |
| commit | eefb83790a0dda112d1755e4f5e213738d717e76 (patch) | |
| tree | 7a3d2f030eaca0af62804a9fd5de57f64476d406 /include/uapi/linux | |
| parent | eff0c286aa916221a69126a43eee7c218d6f4011 (diff) | |
| download | linux-eefb83790a0dda112d1755e4f5e213738d717e76.tar.xz | |
misc: pci_endpoint_test: Add doorbell test case
Add doorbell support with the help of three new registers:
PCIE_ENDPOINT_TEST_DB_BAR, PCIE_ENDPOINT_TEST_DB_ADDR, and
PCIE_ENDPOINT_TEST_DB_DATA.
The testcase works by triggering the doorbell in Endpoint by writing the
value from PCI_ENDPOINT_TEST_DB_DATA register to the address provided by
PCI_ENDPOINT_TEST_DB_OFFSET register of the BAR indicated by the
PCIE_ENDPOINT_TEST_DB_BAR register and waiting for the completion status
from the Endpoint.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
[mani: removed one spurious change and reworded the commit message]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Niklas Cassel <cassel@kernel.org>
Link: https://patch.msgid.link/20250710-ep-msi-v21-7-57683fc7fb25@nxp.com
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/pcitest.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/pcitest.h b/include/uapi/linux/pcitest.h index d3aa8715a525..d6023a45a9d0 100644 --- a/include/uapi/linux/pcitest.h +++ b/include/uapi/linux/pcitest.h @@ -21,6 +21,7 @@ #define PCITEST_SET_IRQTYPE _IOW('P', 0x8, int) #define PCITEST_GET_IRQTYPE _IO('P', 0x9) #define PCITEST_BARS _IO('P', 0xa) +#define PCITEST_DOORBELL _IO('P', 0xb) #define PCITEST_CLEAR_IRQ _IO('P', 0x10) #define PCITEST_IRQ_TYPE_UNDEFINED -1 |