| Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| Christopher Ferris | e084501 | 2014-07-09 14:58:51 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Intel MIC Platform Software Stack (MPSS) |
| 4 | * |
| 5 | * Copyright(c) 2013 Intel Corporation. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License, version 2, as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * General Public License for more details. |
| 15 | * |
| 16 | * The full GNU General Public License is included in this distribution in |
| 17 | * the file called "COPYING". |
| 18 | * |
| 19 | * Intel MIC Host driver. |
| 20 | * |
| 21 | */ |
| 22 | #ifndef _MIC_IOCTL_H_ |
| 23 | #define _MIC_IOCTL_H_ |
| 24 | |
| 25 | #include <linux/types.h> |
| 26 | |
| 27 | /* |
| 28 | * mic_copy - MIC virtio descriptor copy. |
| 29 | * |
| 30 | * @iov: An array of IOVEC structures containing user space buffers. |
| 31 | * @iovcnt: Number of IOVEC structures in iov. |
| 32 | * @vr_idx: The vring index. |
| 33 | * @update_used: A non zero value results in used index being updated. |
| 34 | * @out_len: The aggregate of the total length written to or read from |
| 35 | * the virtio device. |
| 36 | */ |
| 37 | struct mic_copy_desc { |
| 38 | #ifdef __KERNEL__ |
| 39 | struct iovec __user *iov; |
| 40 | #else |
| 41 | struct iovec *iov; |
| 42 | #endif |
| 43 | __u32 iovcnt; |
| 44 | __u8 vr_idx; |
| 45 | __u8 update_used; |
| 46 | __u32 out_len; |
| 47 | }; |
| 48 | |
| 49 | /* |
| 50 | * Add a new virtio device |
| 51 | * The (struct mic_device_desc *) pointer points to a device page entry |
| 52 | * for the virtio device consisting of: |
| 53 | * - struct mic_device_desc |
| 54 | * - struct mic_vqconfig (num_vq of these) |
| 55 | * - host and guest features |
| 56 | * - virtio device config space |
| 57 | * The total size referenced by the pointer should equal the size returned |
| 58 | * by desc_size() in mic_common.h |
| 59 | */ |
| 60 | #define MIC_VIRTIO_ADD_DEVICE _IOWR('s', 1, struct mic_device_desc *) |
| 61 | |
| 62 | /* |
| 63 | * Copy the number of entries in the iovec and update the used index |
| 64 | * if requested by the user. |
| 65 | */ |
| 66 | #define MIC_VIRTIO_COPY_DESC _IOWR('s', 2, struct mic_copy_desc *) |
| 67 | |
| 68 | /* |
| 69 | * Notify virtio device of a config change |
| 70 | * The (__u8 *) pointer points to config space values for the device |
| 71 | * as they should be written into the device page. The total size |
| 72 | * referenced by the pointer should equal the config_len field of struct |
| 73 | * mic_device_desc. |
| 74 | */ |
| 75 | #define MIC_VIRTIO_CONFIG_CHANGE _IOWR('s', 5, __u8 *) |
| 76 | |
| 77 | #endif |