diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/networking/device_drivers/google/gve.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/networking/device_drivers/google/gve.rst b/Documentation/networking/device_drivers/google/gve.rst index df8974fb3270..793693cef6e3 100644 --- a/Documentation/networking/device_drivers/google/gve.rst +++ b/Documentation/networking/device_drivers/google/gve.rst @@ -40,6 +40,8 @@ The driver interacts with the device in the following ways: - See gve_register.h for more detail - Admin Queue - See description below + - Reset + - At any time the device can be reset - Interrupts - See supported interrupts below - Transmit and Receive Queues @@ -69,6 +71,12 @@ the following (with proper locking): The device will update the status field in each AQ command reported as executed through the ADMIN_QUEUE_EVENT_COUNTER register. +Device Resets +------------- +A device reset is triggered by writing 0x0 to the AQ PFN register. +This causes the device to release all resources allocated by the +driver, including the AQ itself. + Interrupts ---------- The following interrupts are supported by the driver: @@ -78,6 +86,9 @@ Management Interrupt The management interrupt is used by the device to tell the driver to look at the GVE_DEVICE_STATUS register. +The handler for the management irq simply queues the service task in +the workqueue to check the register and acks the irq. + Notification Block Interrupts ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The notification block interrupts are used to tell the driver to poll |