diff options
Diffstat (limited to 'drivers/staging/gasket/gasket_interrupt.h')
-rw-r--r-- | drivers/staging/gasket/gasket_interrupt.h | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/drivers/staging/gasket/gasket_interrupt.h b/drivers/staging/gasket/gasket_interrupt.h deleted file mode 100644 index 85526a1374a1..000000000000 --- a/drivers/staging/gasket/gasket_interrupt.h +++ /dev/null @@ -1,95 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Gasket common interrupt module. Defines functions for enabling - * eventfd-triggered interrupts between a Gasket device and a host process. - * - * Copyright (C) 2018 Google, Inc. - */ -#ifndef __GASKET_INTERRUPT_H__ -#define __GASKET_INTERRUPT_H__ - -#include <linux/eventfd.h> -#include <linux/pci.h> - -#include "gasket_core.h" - -/* Note that this currently assumes that device interrupts are a dense set, - * numbered from 0 - (num_interrupts - 1). Should this have to change, these - * APIs will have to be updated. - */ - -/* Opaque type used to hold interrupt subsystem data. */ -struct gasket_interrupt_data; - -/* - * Initialize the interrupt module. - * @gasket_dev: The Gasket device structure for the device to be initted. - */ -int gasket_interrupt_init(struct gasket_dev *gasket_dev); - -/* - * Clean up a device's interrupt structure. - * @gasket_dev: The Gasket information structure for this device. - * - * Cleans up the device's interrupts and deallocates data. - */ -void gasket_interrupt_cleanup(struct gasket_dev *gasket_dev); - -/* - * Clean up and re-initialize the MSI-x subsystem. - * @gasket_dev: The Gasket information structure for this device. - * - * Performs a teardown of the MSI-x subsystem and re-initializes it. Does not - * free the underlying data structures. Returns 0 on success and an error code - * on error. - */ -int gasket_interrupt_reinit(struct gasket_dev *gasket_dev); - -/* - * Reset the counts stored in the interrupt subsystem. - * @gasket_dev: The Gasket information structure for this device. - * - * Sets the counts of all interrupts in the subsystem to 0. - */ -int gasket_interrupt_reset_counts(struct gasket_dev *gasket_dev); - -/* - * Associates an eventfd with a device interrupt. - * @data: Pointer to device interrupt data. - * @interrupt: The device interrupt to configure. - * @event_fd: The eventfd to associate with the interrupt. - * - * Prepares the host to receive notification of device interrupts by associating - * event_fd with interrupt. Upon receipt of a device interrupt, event_fd will be - * signaled, after successful configuration. - * - * Returns 0 on success, a negative error code otherwise. - */ -int gasket_interrupt_set_eventfd(struct gasket_interrupt_data *interrupt_data, - int interrupt, int event_fd); - -/* - * Removes an interrupt-eventfd association. - * @data: Pointer to device interrupt data. - * @interrupt: The device interrupt to de-associate. - * - * Removes any eventfd associated with the specified interrupt, if any. - */ -int gasket_interrupt_clear_eventfd(struct gasket_interrupt_data *interrupt_data, - int interrupt); - -/* - * The below functions exist for backwards compatibility. - * No new uses should be written. - */ -/* - * Get the health of the interrupt subsystem. - * @gasket_dev: The Gasket device struct. - * - * Returns DEAD if not set up, LAMED if initialization failed, and ALIVE - * otherwise. - */ - -int gasket_interrupt_system_status(struct gasket_dev *gasket_dev); - -#endif |