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Diffstat (limited to 'include/linux/fsl_hypervisor.h')
-rw-r--r-- | include/linux/fsl_hypervisor.h | 241 |
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diff --git a/include/linux/fsl_hypervisor.h b/include/linux/fsl_hypervisor.h new file mode 100644 index 00000000000..1cebaeeeef5 --- /dev/null +++ b/include/linux/fsl_hypervisor.h | |||
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1 | /* | ||
2 | * Freescale hypervisor ioctl and kernel interface | ||
3 | * | ||
4 | * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. | ||
5 | * Author: Timur Tabi <timur@freescale.com> | ||
6 | * | ||
7 | * Redistribution and use in source and binary forms, with or without | ||
8 | * modification, are permitted provided that the following conditions are met: | ||
9 | * * Redistributions of source code must retain the above copyright | ||
10 | * notice, this list of conditions and the following disclaimer. | ||
11 | * * Redistributions in binary form must reproduce the above copyright | ||
12 | * notice, this list of conditions and the following disclaimer in the | ||
13 | * documentation and/or other materials provided with the distribution. | ||
14 | * * Neither the name of Freescale Semiconductor nor the | ||
15 | * names of its contributors may be used to endorse or promote products | ||
16 | * derived from this software without specific prior written permission. | ||
17 | * | ||
18 | * | ||
19 | * ALTERNATIVELY, this software may be distributed under the terms of the | ||
20 | * GNU General Public License ("GPL") as published by the Free Software | ||
21 | * Foundation, either version 2 of that License or (at your option) any | ||
22 | * later version. | ||
23 | * | ||
24 | * This software is provided by Freescale Semiconductor "as is" and any | ||
25 | * express or implied warranties, including, but not limited to, the implied | ||
26 | * warranties of merchantability and fitness for a particular purpose are | ||
27 | * disclaimed. In no event shall Freescale Semiconductor be liable for any | ||
28 | * direct, indirect, incidental, special, exemplary, or consequential damages | ||
29 | * (including, but not limited to, procurement of substitute goods or services; | ||
30 | * loss of use, data, or profits; or business interruption) however caused and | ||
31 | * on any theory of liability, whether in contract, strict liability, or tort | ||
32 | * (including negligence or otherwise) arising in any way out of the use of this | ||
33 | * software, even if advised of the possibility of such damage. | ||
34 | * | ||
35 | * This file is used by the Freescale hypervisor management driver. It can | ||
36 | * also be included by applications that need to communicate with the driver | ||
37 | * via the ioctl interface. | ||
38 | */ | ||
39 | |||
40 | #ifndef FSL_HYPERVISOR_H | ||
41 | #define FSL_HYPERVISOR_H | ||
42 | |||
43 | #include <linux/types.h> | ||
44 | |||
45 | /** | ||
46 | * struct fsl_hv_ioctl_restart - restart a partition | ||
47 | * @ret: return error code from the hypervisor | ||
48 | * @partition: the ID of the partition to restart, or -1 for the | ||
49 | * calling partition | ||
50 | * | ||
51 | * Used by FSL_HV_IOCTL_PARTITION_RESTART | ||
52 | */ | ||
53 | struct fsl_hv_ioctl_restart { | ||
54 | __u32 ret; | ||
55 | __u32 partition; | ||
56 | }; | ||
57 | |||
58 | /** | ||
59 | * struct fsl_hv_ioctl_status - get a partition's status | ||
60 | * @ret: return error code from the hypervisor | ||
61 | * @partition: the ID of the partition to query, or -1 for the | ||
62 | * calling partition | ||
63 | * @status: The returned status of the partition | ||
64 | * | ||
65 | * Used by FSL_HV_IOCTL_PARTITION_GET_STATUS | ||
66 | * | ||
67 | * Values of 'status': | ||
68 | * 0 = Stopped | ||
69 | * 1 = Running | ||
70 | * 2 = Starting | ||
71 | * 3 = Stopping | ||
72 | */ | ||
73 | struct fsl_hv_ioctl_status { | ||
74 | __u32 ret; | ||
75 | __u32 partition; | ||
76 | __u32 status; | ||
77 | }; | ||
78 | |||
79 | /** | ||
80 | * struct fsl_hv_ioctl_start - start a partition | ||
81 | * @ret: return error code from the hypervisor | ||
82 | * @partition: the ID of the partition to control | ||
83 | * @entry_point: The offset within the guest IMA to start execution | ||
84 | * @load: If non-zero, reload the partition's images before starting | ||
85 | * | ||
86 | * Used by FSL_HV_IOCTL_PARTITION_START | ||
87 | */ | ||
88 | struct fsl_hv_ioctl_start { | ||
89 | __u32 ret; | ||
90 | __u32 partition; | ||
91 | __u32 entry_point; | ||
92 | __u32 load; | ||
93 | }; | ||
94 | |||
95 | /** | ||
96 | * struct fsl_hv_ioctl_stop - stop a partition | ||
97 | * @ret: return error code from the hypervisor | ||
98 | * @partition: the ID of the partition to stop, or -1 for the calling | ||
99 | * partition | ||
100 | * | ||
101 | * Used by FSL_HV_IOCTL_PARTITION_STOP | ||
102 | */ | ||
103 | struct fsl_hv_ioctl_stop { | ||
104 | __u32 ret; | ||
105 | __u32 partition; | ||
106 | }; | ||
107 | |||
108 | /** | ||
109 | * struct fsl_hv_ioctl_memcpy - copy memory between partitions | ||
110 | * @ret: return error code from the hypervisor | ||
111 | * @source: the partition ID of the source partition, or -1 for this | ||
112 | * partition | ||
113 | * @target: the partition ID of the target partition, or -1 for this | ||
114 | * partition | ||
115 | * @reserved: reserved, must be set to 0 | ||
116 | * @local_addr: user-space virtual address of a buffer in the local | ||
117 | * partition | ||
118 | * @remote_addr: guest physical address of a buffer in the | ||
119 | * remote partition | ||
120 | * @count: the number of bytes to copy. Both the local and remote | ||
121 | * buffers must be at least 'count' bytes long | ||
122 | * | ||
123 | * Used by FSL_HV_IOCTL_MEMCPY | ||
124 | * | ||
125 | * The 'local' partition is the partition that calls this ioctl. The | ||
126 | * 'remote' partition is a different partition. The data is copied from | ||
127 | * the 'source' paritition' to the 'target' partition. | ||
128 | * | ||
129 | * The buffer in the remote partition must be guest physically | ||
130 | * contiguous. | ||
131 | * | ||
132 | * This ioctl does not support copying memory between two remote | ||
133 | * partitions or within the same partition, so either 'source' or | ||
134 | * 'target' (but not both) must be -1. In other words, either | ||
135 | * | ||
136 | * source == local and target == remote | ||
137 | * or | ||
138 | * source == remote and target == local | ||
139 | */ | ||
140 | struct fsl_hv_ioctl_memcpy { | ||
141 | __u32 ret; | ||
142 | __u32 source; | ||
143 | __u32 target; | ||
144 | __u32 reserved; /* padding to ensure local_vaddr is aligned */ | ||
145 | __u64 local_vaddr; | ||
146 | __u64 remote_paddr; | ||
147 | __u64 count; | ||
148 | }; | ||
149 | |||
150 | /** | ||
151 | * struct fsl_hv_ioctl_doorbell - ring a doorbell | ||
152 | * @ret: return error code from the hypervisor | ||
153 | * @doorbell: the handle of the doorbell to ring doorbell | ||
154 | * | ||
155 | * Used by FSL_HV_IOCTL_DOORBELL | ||
156 | */ | ||
157 | struct fsl_hv_ioctl_doorbell { | ||
158 | __u32 ret; | ||
159 | __u32 doorbell; | ||
160 | }; | ||
161 | |||
162 | /** | ||
163 | * struct fsl_hv_ioctl_prop - get/set a device tree property | ||
164 | * @ret: return error code from the hypervisor | ||
165 | * @handle: handle of partition whose tree to access | ||
166 | * @path: virtual address of path name of node to access | ||
167 | * @propname: virtual address of name of property to access | ||
168 | * @propval: virtual address of property data buffer | ||
169 | * @proplen: Size of property data buffer | ||
170 | * @reserved: reserved, must be set to 0 | ||
171 | * | ||
172 | * Used by FSL_HV_IOCTL_DOORBELL | ||
173 | */ | ||
174 | struct fsl_hv_ioctl_prop { | ||
175 | __u32 ret; | ||
176 | __u32 handle; | ||
177 | __u64 path; | ||
178 | __u64 propname; | ||
179 | __u64 propval; | ||
180 | __u32 proplen; | ||
181 | __u32 reserved; /* padding to ensure structure is aligned */ | ||
182 | }; | ||
183 | |||
184 | /* The ioctl type, documented in ioctl-number.txt */ | ||
185 | #define FSL_HV_IOCTL_TYPE 0xAF | ||
186 | |||
187 | /* Restart another partition */ | ||
188 | #define FSL_HV_IOCTL_PARTITION_RESTART \ | ||
189 | _IOWR(FSL_HV_IOCTL_TYPE, 1, struct fsl_hv_ioctl_restart) | ||
190 | |||
191 | /* Get a partition's status */ | ||
192 | #define FSL_HV_IOCTL_PARTITION_GET_STATUS \ | ||
193 | _IOWR(FSL_HV_IOCTL_TYPE, 2, struct fsl_hv_ioctl_status) | ||
194 | |||
195 | /* Boot another partition */ | ||
196 | #define FSL_HV_IOCTL_PARTITION_START \ | ||
197 | _IOWR(FSL_HV_IOCTL_TYPE, 3, struct fsl_hv_ioctl_start) | ||
198 | |||
199 | /* Stop this or another partition */ | ||
200 | #define FSL_HV_IOCTL_PARTITION_STOP \ | ||
201 | _IOWR(FSL_HV_IOCTL_TYPE, 4, struct fsl_hv_ioctl_stop) | ||
202 | |||
203 | /* Copy data from one partition to another */ | ||
204 | #define FSL_HV_IOCTL_MEMCPY \ | ||
205 | _IOWR(FSL_HV_IOCTL_TYPE, 5, struct fsl_hv_ioctl_memcpy) | ||
206 | |||
207 | /* Ring a doorbell */ | ||
208 | #define FSL_HV_IOCTL_DOORBELL \ | ||
209 | _IOWR(FSL_HV_IOCTL_TYPE, 6, struct fsl_hv_ioctl_doorbell) | ||
210 | |||
211 | /* Get a property from another guest's device tree */ | ||
212 | #define FSL_HV_IOCTL_GETPROP \ | ||
213 | _IOWR(FSL_HV_IOCTL_TYPE, 7, struct fsl_hv_ioctl_prop) | ||
214 | |||
215 | /* Set a property in another guest's device tree */ | ||
216 | #define FSL_HV_IOCTL_SETPROP \ | ||
217 | _IOWR(FSL_HV_IOCTL_TYPE, 8, struct fsl_hv_ioctl_prop) | ||
218 | |||
219 | #ifdef __KERNEL__ | ||
220 | |||
221 | /** | ||
222 | * fsl_hv_event_register() - register a callback for failover events | ||
223 | * @nb: pointer to caller-supplied notifier_block structure | ||
224 | * | ||
225 | * This function is called by device drivers to register their callback | ||
226 | * functions for fail-over events. | ||
227 | * | ||
228 | * The caller should allocate a notifier_block object and initialize the | ||
229 | * 'priority' and 'notifier_call' fields. | ||
230 | */ | ||
231 | int fsl_hv_failover_register(struct notifier_block *nb); | ||
232 | |||
233 | /** | ||
234 | * fsl_hv_event_unregister() - unregister a callback for failover events | ||
235 | * @nb: the same 'nb' used in previous fsl_hv_failover_register call | ||
236 | */ | ||
237 | int fsl_hv_failover_unregister(struct notifier_block *nb); | ||
238 | |||
239 | #endif | ||
240 | |||
241 | #endif | ||