diff options
Diffstat (limited to 'drivers/staging/gasket/gasket.h')
| -rw-r--r-- | drivers/staging/gasket/gasket.h | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/drivers/staging/gasket/gasket.h b/drivers/staging/gasket/gasket.h deleted file mode 100644 index a0f065c517a5..000000000000 --- a/drivers/staging/gasket/gasket.h +++ /dev/null @@ -1,122 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Common Gasket device kernel and user space declarations. - * - * Copyright (C) 2018 Google, Inc. - */ -#ifndef __GASKET_H__ -#define __GASKET_H__ - -#include <linux/ioctl.h> -#include <linux/types.h> - -/* ioctl structure declarations */ - -/* Ioctl structures are padded to a multiple of 64 bits */ -/* and padded to put 64 bit values on 64 bit boundaries. */ -/* Unsigned 64 bit integers are used to hold pointers. */ -/* This helps compatibility between 32 and 64 bits. */ - -/* - * Common structure for ioctls associating an eventfd with a device interrupt, - * when using the Gasket interrupt module. - */ -struct gasket_interrupt_eventfd { - u64 interrupt; - u64 event_fd; -}; - -/* - * Common structure for ioctls mapping and unmapping buffers when using the - * Gasket page_table module. - */ -struct gasket_page_table_ioctl { - u64 page_table_index; - u64 size; - u64 host_address; - u64 device_address; -}; - -/* - * Common structure for ioctls mapping and unmapping buffers when using the - * Gasket page_table module. - * dma_address: phys addr start of coherent memory, allocated by kernel - */ -struct gasket_coherent_alloc_config_ioctl { - u64 page_table_index; - u64 enable; - u64 size; - u64 dma_address; -}; - -/* Base number for all Gasket-common IOCTLs */ -#define GASKET_IOCTL_BASE 0xDC - -/* Reset the device. */ -#define GASKET_IOCTL_RESET _IO(GASKET_IOCTL_BASE, 0) - -/* Associate the specified [event]fd with the specified interrupt. */ -#define GASKET_IOCTL_SET_EVENTFD \ - _IOW(GASKET_IOCTL_BASE, 1, struct gasket_interrupt_eventfd) - -/* - * Clears any eventfd associated with the specified interrupt. The (ulong) - * argument is the interrupt number to clear. - */ -#define GASKET_IOCTL_CLEAR_EVENTFD _IOW(GASKET_IOCTL_BASE, 2, unsigned long) - -/* - * [Loopbacks only] Requests that the loopback device send the specified - * interrupt to the host. The (ulong) argument is the number of the interrupt to - * send. - */ -#define GASKET_IOCTL_LOOPBACK_INTERRUPT \ - _IOW(GASKET_IOCTL_BASE, 3, unsigned long) - -/* Queries the kernel for the number of page tables supported by the device. */ -#define GASKET_IOCTL_NUMBER_PAGE_TABLES _IOR(GASKET_IOCTL_BASE, 4, u64) - -/* - * Queries the kernel for the maximum size of the page table. Only the size and - * page_table_index fields are used from the struct gasket_page_table_ioctl. - */ -#define GASKET_IOCTL_PAGE_TABLE_SIZE \ - _IOWR(GASKET_IOCTL_BASE, 5, struct gasket_page_table_ioctl) - -/* - * Queries the kernel for the current simple page table size. Only the size and - * page_table_index fields are used from the struct gasket_page_table_ioctl. - */ -#define GASKET_IOCTL_SIMPLE_PAGE_TABLE_SIZE \ - _IOWR(GASKET_IOCTL_BASE, 6, struct gasket_page_table_ioctl) - -/* - * Tells the kernel to change the split between the number of simple and - * extended entries in the given page table. Only the size and page_table_index - * fields are used from the struct gasket_page_table_ioctl. - */ -#define GASKET_IOCTL_PARTITION_PAGE_TABLE \ - _IOW(GASKET_IOCTL_BASE, 7, struct gasket_page_table_ioctl) - -/* - * Tells the kernel to map size bytes at host_address to device_address in - * page_table_index page table. - */ -#define GASKET_IOCTL_MAP_BUFFER \ - _IOW(GASKET_IOCTL_BASE, 8, struct gasket_page_table_ioctl) - -/* - * Tells the kernel to unmap size bytes at host_address from device_address in - * page_table_index page table. - */ -#define GASKET_IOCTL_UNMAP_BUFFER \ - _IOW(GASKET_IOCTL_BASE, 9, struct gasket_page_table_ioctl) - -/* Clear the interrupt counts stored for this device. */ -#define GASKET_IOCTL_CLEAR_INTERRUPT_COUNTS _IO(GASKET_IOCTL_BASE, 10) - -/* Enable/Disable and configure the coherent allocator. */ -#define GASKET_IOCTL_CONFIG_COHERENT_ALLOCATOR \ - _IOWR(GASKET_IOCTL_BASE, 11, struct gasket_coherent_alloc_config_ioctl) - -#endif /* __GASKET_H__ */ |