projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| dd027328 RG |
1 | /* |
| 2 | * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. | |
| 3 | * | |
| 4 | * This program is free software: you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License as published by | |
| d3c68d0b | 6 | * the Free Software Foundation, either version 2 of the License, or |
| dd027328 RG |
7 | * (at your option) any later version. |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU General Public License | |
| 15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 16 | */ | |
| 17 | ||
| 18 | /* | |
| 19 | * Oracle DAX driver API definitions | |
| 20 | */ | |
| 21 | ||
| 22 | #ifndef _ORADAX_H | |
| 23 | #define _ORADAX_H | |
| 24 | ||
| 25 | #include <linux/types.h> | |
| 26 | ||
| 27 | #define CCB_KILL 0 | |
| 28 | #define CCB_INFO 1 | |
| 29 | #define CCB_DEQUEUE 2 | |
| 30 | ||
| 31 | struct dax_command { | |
| 32 | __u16 command; /* CCB_KILL/INFO/DEQUEUE */ | |
| 33 | __u16 ca_offset; /* offset into mmapped completion area */ | |
| 34 | }; | |
| 35 | ||
| 36 | struct ccb_kill_result { | |
| 37 | __u16 action; /* action taken to kill ccb */ | |
| 38 | }; | |
| 39 | ||
| 40 | struct ccb_info_result { | |
| 41 | __u16 state; /* state of enqueued ccb */ | |
| 42 | __u16 inst_num; /* dax instance number of enqueued ccb */ | |
| 43 | __u16 q_num; /* queue number of enqueued ccb */ | |
| 44 | __u16 q_pos; /* ccb position in queue */ | |
| 45 | }; | |
| 46 | ||
| 47 | struct ccb_exec_result { | |
| 48 | __u64 status_data; /* additional status data (e.g. bad VA) */ | |
| 49 | __u32 status; /* one of DAX_SUBMIT_* */ | |
| 50 | }; | |
| 51 | ||
| 52 | union ccb_result { | |
| 53 | struct ccb_exec_result exec; | |
| 54 | struct ccb_info_result info; | |
| 55 | struct ccb_kill_result kill; | |
| 56 | }; | |
| 57 | ||
| 58 | #define DAX_MMAP_LEN (16 * 1024) | |
| 59 | #define DAX_MAX_CCBS 15 | |
| 60 | #define DAX_CCB_BUF_MAXLEN (DAX_MAX_CCBS * 64) | |
| 61 | #define DAX_NAME "oradax" | |
| 62 | ||
| 63 | /* CCB_EXEC status */ | |
| 64 | #define DAX_SUBMIT_OK 0 | |
| 65 | #define DAX_SUBMIT_ERR_RETRY 1 | |
| 66 | #define DAX_SUBMIT_ERR_WOULDBLOCK 2 | |
| 67 | #define DAX_SUBMIT_ERR_BUSY 3 | |
| 68 | #define DAX_SUBMIT_ERR_THR_INIT 4 | |
| 69 | #define DAX_SUBMIT_ERR_ARG_INVAL 5 | |
| 70 | #define DAX_SUBMIT_ERR_CCB_INVAL 6 | |
| 71 | #define DAX_SUBMIT_ERR_NO_CA_AVAIL 7 | |
| 72 | #define DAX_SUBMIT_ERR_CCB_ARR_MMU_MISS 8 | |
| 73 | #define DAX_SUBMIT_ERR_NOMAP 9 | |
| 74 | #define DAX_SUBMIT_ERR_NOACCESS 10 | |
| 75 | #define DAX_SUBMIT_ERR_TOOMANY 11 | |
| 76 | #define DAX_SUBMIT_ERR_UNAVAIL 12 | |
| 77 | #define DAX_SUBMIT_ERR_INTERNAL 13 | |
| 78 | ||
| 79 | /* CCB_INFO states - must match HV_CCB_STATE_* definitions */ | |
| 80 | #define DAX_CCB_COMPLETED 0 | |
| 81 | #define DAX_CCB_ENQUEUED 1 | |
| 82 | #define DAX_CCB_INPROGRESS 2 | |
| 83 | #define DAX_CCB_NOTFOUND 3 | |
| 84 | ||
| 85 | /* CCB_KILL actions - must match HV_CCB_KILL_* definitions */ | |
| 86 | #define DAX_KILL_COMPLETED 0 | |
| 87 | #define DAX_KILL_DEQUEUED 1 | |
| 88 | #define DAX_KILL_KILLED 2 | |
| 89 | #define DAX_KILL_NOTFOUND 3 | |
| 90 | ||
| 91 | #endif /* _ORADAX_H */ |