| // Copyright 2022 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ZIRCON_SYSCALLS_IOB_H_ |
| #define ZIRCON_SYSCALLS_IOB_H_ |
| |
| #include <zircon/compiler.h> |
| |
| __BEGIN_CDECLS |
| |
| // A somewhat arbitrary limitation on the number of IOBuffer regions to protect us from having to |
| // handle IOBuffers with extremely large numbers of regions. |
| #define ZX_IOB_MAX_REGIONS 64 |
| |
| // TODO(fxb/118650): Clarify and finalize the ringbuffer disciplines. |
| #define ZX_IOB_DISCIPLINE_TYPE_NONE (0) |
| |
| #define ZX_IOB_REGION_TYPE_PRIVATE (0) |
| |
| // Access modifiers |
| #define ZX_IOB_EP0_CAN_MAP_READ (1 << 0) |
| #define ZX_IOB_EP0_CAN_MAP_WRITE (1 << 1) |
| #define ZX_IOB_EP0_CAN_MEDIATED_READ (1 << 2) |
| #define ZX_IOB_EP0_CAN_MEDIATED_WRITE (1 << 3) |
| #define ZX_IOB_EP1_CAN_MAP_READ (1 << 4) |
| #define ZX_IOB_EP1_CAN_MAP_WRITE (1 << 5) |
| #define ZX_IOB_EP1_CAN_MEDIATED_READ (1 << 6) |
| #define ZX_IOB_EP1_CAN_MEDIATED_WRITE (1 << 7) |
| |
| __END_CDECLS |
| |
| #endif // ZIRCON_SYSCALLS_IOB_H_ |
