1 | /* |
---|
2 | * This program is free software; you can redistribute it and/or modify |
---|
3 | * it under the terms of the GNU General Public License as published by |
---|
4 | * the Free Software Foundation; either version 2 of the License, or |
---|
5 | * (at your option) any later version. |
---|
6 | * |
---|
7 | * This program is distributed in the hope that it will be useful, |
---|
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
10 | * GNU General Public License for more details. |
---|
11 | * |
---|
12 | * You should have received a copy of the GNU General Public License |
---|
13 | * along with this program; if not, write to the Free Software |
---|
14 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
---|
15 | * |
---|
16 | * Tristan Gingold <tristan.gingold@bull.net> |
---|
17 | */ |
---|
18 | #include <linux/types.h> |
---|
19 | #include <linux/errno.h> |
---|
20 | #include <linux/kernel.h> |
---|
21 | #include <linux/module.h> |
---|
22 | #include <xen/interface/xen.h> |
---|
23 | #include <xen/interface/platform.h> |
---|
24 | #include <xen/interface/memory.h> |
---|
25 | #include <xen/interface/xencomm.h> |
---|
26 | #include <xen/interface/version.h> |
---|
27 | #include <xen/interface/event_channel.h> |
---|
28 | #include <xen/interface/physdev.h> |
---|
29 | #include <xen/interface/grant_table.h> |
---|
30 | #include <xen/interface/hvm/params.h> |
---|
31 | #include <xen/interface/xenoprof.h> |
---|
32 | #ifdef CONFIG_VMX_GUEST |
---|
33 | #include <asm/hypervisor.h> |
---|
34 | #else |
---|
35 | #include <asm/hypercall.h> |
---|
36 | #endif |
---|
37 | #include <asm/xen/xencomm.h> |
---|
38 | #include <asm/perfmon.h> |
---|
39 | |
---|
40 | int |
---|
41 | xencomm_mini_hypercall_event_channel_op(int cmd, void *op) |
---|
42 | { |
---|
43 | struct xencomm_mini xc_area[2]; |
---|
44 | int nbr_area = 2; |
---|
45 | struct xencomm_handle *desc; |
---|
46 | int rc; |
---|
47 | |
---|
48 | rc = xencomm_create_mini(xc_area, &nbr_area, |
---|
49 | op, sizeof(evtchn_op_t), &desc); |
---|
50 | if (rc) |
---|
51 | return rc; |
---|
52 | |
---|
53 | return xencomm_arch_hypercall_event_channel_op(cmd, desc); |
---|
54 | } |
---|
55 | EXPORT_SYMBOL(xencomm_mini_hypercall_event_channel_op); |
---|
56 | |
---|
57 | static int |
---|
58 | xencommize_mini_grant_table_op(struct xencomm_mini *xc_area, int *nbr_area, |
---|
59 | unsigned int cmd, void *op, unsigned int count, |
---|
60 | struct xencomm_handle **desc) |
---|
61 | { |
---|
62 | struct xencomm_handle *desc1; |
---|
63 | unsigned int argsize; |
---|
64 | int rc; |
---|
65 | |
---|
66 | switch (cmd) { |
---|
67 | case GNTTABOP_map_grant_ref: |
---|
68 | argsize = sizeof(struct gnttab_map_grant_ref); |
---|
69 | break; |
---|
70 | case GNTTABOP_unmap_grant_ref: |
---|
71 | argsize = sizeof(struct gnttab_unmap_grant_ref); |
---|
72 | break; |
---|
73 | case GNTTABOP_setup_table: |
---|
74 | { |
---|
75 | struct gnttab_setup_table *setup = op; |
---|
76 | |
---|
77 | argsize = sizeof(*setup); |
---|
78 | |
---|
79 | if (count != 1) |
---|
80 | return -EINVAL; |
---|
81 | rc = xencomm_create_mini |
---|
82 | (xc_area, nbr_area, |
---|
83 | xen_guest_handle(setup->frame_list), |
---|
84 | setup->nr_frames |
---|
85 | * sizeof(*xen_guest_handle(setup->frame_list)), |
---|
86 | &desc1); |
---|
87 | if (rc) |
---|
88 | return rc; |
---|
89 | set_xen_guest_handle(setup->frame_list, (void *)desc1); |
---|
90 | break; |
---|
91 | } |
---|
92 | case GNTTABOP_dump_table: |
---|
93 | argsize = sizeof(struct gnttab_dump_table); |
---|
94 | break; |
---|
95 | case GNTTABOP_transfer: |
---|
96 | argsize = sizeof(struct gnttab_transfer); |
---|
97 | break; |
---|
98 | case GNTTABOP_copy: |
---|
99 | argsize = sizeof(struct gnttab_copy); |
---|
100 | break; |
---|
101 | case GNTTABOP_query_size: |
---|
102 | argsize = sizeof(struct gnttab_query_size); |
---|
103 | break; |
---|
104 | default: |
---|
105 | printk("%s: unknown mini grant table op %d\n", __func__, cmd); |
---|
106 | BUG(); |
---|
107 | } |
---|
108 | |
---|
109 | rc = xencomm_create_mini(xc_area, nbr_area, op, count * argsize, desc); |
---|
110 | if (rc) |
---|
111 | return rc; |
---|
112 | |
---|
113 | return 0; |
---|
114 | } |
---|
115 | |
---|
116 | int |
---|
117 | xencomm_mini_hypercall_grant_table_op(unsigned int cmd, void *op, |
---|
118 | unsigned int count) |
---|
119 | { |
---|
120 | int rc; |
---|
121 | struct xencomm_handle *desc; |
---|
122 | int nbr_area = 2; |
---|
123 | struct xencomm_mini xc_area[2]; |
---|
124 | |
---|
125 | rc = xencommize_mini_grant_table_op(xc_area, &nbr_area, |
---|
126 | cmd, op, count, &desc); |
---|
127 | if (rc) |
---|
128 | return rc; |
---|
129 | |
---|
130 | return xencomm_arch_hypercall_grant_table_op(cmd, desc, count); |
---|
131 | } |
---|
132 | EXPORT_SYMBOL(xencomm_mini_hypercall_grant_table_op); |
---|
133 | |
---|
134 | int |
---|
135 | xencomm_mini_hypercall_multicall(void *call_list, int nr_calls) |
---|
136 | { |
---|
137 | int i; |
---|
138 | multicall_entry_t *mce; |
---|
139 | int nbr_area = 2 + nr_calls * 3; |
---|
140 | struct xencomm_mini xc_area[nbr_area]; |
---|
141 | struct xencomm_handle *desc; |
---|
142 | int rc; |
---|
143 | |
---|
144 | for (i = 0; i < nr_calls; i++) { |
---|
145 | mce = (multicall_entry_t *)call_list + i; |
---|
146 | |
---|
147 | switch (mce->op) { |
---|
148 | case __HYPERVISOR_update_va_mapping: |
---|
149 | case __HYPERVISOR_mmu_update: |
---|
150 | /* No-op on ia64. */ |
---|
151 | break; |
---|
152 | case __HYPERVISOR_grant_table_op: |
---|
153 | rc = xencommize_mini_grant_table_op |
---|
154 | (xc_area, &nbr_area, |
---|
155 | mce->args[0], (void *)mce->args[1], |
---|
156 | mce->args[2], &desc); |
---|
157 | if (rc) |
---|
158 | return rc; |
---|
159 | mce->args[1] = (unsigned long)desc; |
---|
160 | break; |
---|
161 | case __HYPERVISOR_memory_op: |
---|
162 | default: |
---|
163 | printk("%s: unhandled multicall op entry op %lu\n", |
---|
164 | __func__, mce->op); |
---|
165 | return -ENOSYS; |
---|
166 | } |
---|
167 | } |
---|
168 | |
---|
169 | rc = xencomm_create_mini(xc_area, &nbr_area, call_list, |
---|
170 | nr_calls * sizeof(multicall_entry_t), &desc); |
---|
171 | if (rc) |
---|
172 | return rc; |
---|
173 | |
---|
174 | return xencomm_arch_hypercall_multicall(desc, nr_calls); |
---|
175 | } |
---|
176 | EXPORT_SYMBOL(xencomm_mini_hypercall_multicall); |
---|
177 | |
---|
178 | static int |
---|
179 | xencommize_mini_memory_reservation(struct xencomm_mini *area, int *nbr_area, |
---|
180 | xen_memory_reservation_t *mop) |
---|
181 | { |
---|
182 | struct xencomm_handle *desc; |
---|
183 | int rc; |
---|
184 | |
---|
185 | rc = xencomm_create_mini |
---|
186 | (area, nbr_area, |
---|
187 | xen_guest_handle(mop->extent_start), |
---|
188 | mop->nr_extents |
---|
189 | * sizeof(*xen_guest_handle(mop->extent_start)), |
---|
190 | &desc); |
---|
191 | if (rc) |
---|
192 | return rc; |
---|
193 | |
---|
194 | set_xen_guest_handle(mop->extent_start, (void *)desc); |
---|
195 | |
---|
196 | return 0; |
---|
197 | } |
---|
198 | |
---|
199 | int |
---|
200 | xencomm_mini_hypercall_memory_op(unsigned int cmd, void *arg) |
---|
201 | { |
---|
202 | int nbr_area = 4; |
---|
203 | struct xencomm_mini xc_area[4]; |
---|
204 | struct xencomm_handle *desc; |
---|
205 | int rc; |
---|
206 | unsigned int argsize; |
---|
207 | |
---|
208 | switch (cmd) { |
---|
209 | case XENMEM_increase_reservation: |
---|
210 | case XENMEM_decrease_reservation: |
---|
211 | case XENMEM_populate_physmap: |
---|
212 | argsize = sizeof(xen_memory_reservation_t); |
---|
213 | rc = xencommize_mini_memory_reservation |
---|
214 | (xc_area, &nbr_area, (xen_memory_reservation_t *)arg); |
---|
215 | if (rc) |
---|
216 | return rc; |
---|
217 | break; |
---|
218 | |
---|
219 | case XENMEM_maximum_ram_page: |
---|
220 | argsize = 0; |
---|
221 | break; |
---|
222 | |
---|
223 | case XENMEM_exchange: |
---|
224 | argsize = sizeof(xen_memory_exchange_t); |
---|
225 | rc = xencommize_mini_memory_reservation |
---|
226 | (xc_area, &nbr_area, |
---|
227 | &((xen_memory_exchange_t *)arg)->in); |
---|
228 | if (rc) |
---|
229 | return rc; |
---|
230 | rc = xencommize_mini_memory_reservation |
---|
231 | (xc_area, &nbr_area, |
---|
232 | &((xen_memory_exchange_t *)arg)->out); |
---|
233 | if (rc) |
---|
234 | return rc; |
---|
235 | break; |
---|
236 | |
---|
237 | case XENMEM_add_to_physmap: |
---|
238 | argsize = sizeof (xen_add_to_physmap_t); |
---|
239 | break; |
---|
240 | |
---|
241 | default: |
---|
242 | printk("%s: unknown mini memory op %d\n", __func__, cmd); |
---|
243 | return -ENOSYS; |
---|
244 | } |
---|
245 | |
---|
246 | rc = xencomm_create_mini(xc_area, &nbr_area, arg, argsize, &desc); |
---|
247 | if (rc) |
---|
248 | return rc; |
---|
249 | |
---|
250 | return xencomm_arch_hypercall_memory_op(cmd, desc); |
---|
251 | } |
---|
252 | EXPORT_SYMBOL(xencomm_mini_hypercall_memory_op); |
---|
253 | |
---|
254 | unsigned long |
---|
255 | xencomm_mini_hypercall_hvm_op(int cmd, void *arg) |
---|
256 | { |
---|
257 | struct xencomm_handle *desc; |
---|
258 | int nbr_area = 2; |
---|
259 | struct xencomm_mini xc_area[2]; |
---|
260 | unsigned int argsize; |
---|
261 | int rc; |
---|
262 | |
---|
263 | switch (cmd) { |
---|
264 | case HVMOP_get_param: |
---|
265 | case HVMOP_set_param: |
---|
266 | argsize = sizeof(xen_hvm_param_t); |
---|
267 | break; |
---|
268 | default: |
---|
269 | printk("%s: unknown HVMOP %d\n", __func__, cmd); |
---|
270 | return -EINVAL; |
---|
271 | } |
---|
272 | |
---|
273 | rc = xencomm_create_mini(xc_area, &nbr_area, arg, argsize, &desc); |
---|
274 | if (rc) |
---|
275 | return rc; |
---|
276 | |
---|
277 | return xencomm_arch_hypercall_hvm_op(cmd, desc); |
---|
278 | } |
---|
279 | EXPORT_SYMBOL(xencomm_mini_hypercall_hvm_op); |
---|
280 | |
---|
281 | int |
---|
282 | xencomm_mini_hypercall_xen_version(int cmd, void *arg) |
---|
283 | { |
---|
284 | struct xencomm_handle *desc; |
---|
285 | int nbr_area = 2; |
---|
286 | struct xencomm_mini xc_area[2]; |
---|
287 | unsigned int argsize; |
---|
288 | int rc; |
---|
289 | |
---|
290 | switch (cmd) { |
---|
291 | case XENVER_version: |
---|
292 | /* do not actually pass an argument */ |
---|
293 | return xencomm_arch_hypercall_xen_version(cmd, 0); |
---|
294 | case XENVER_extraversion: |
---|
295 | argsize = sizeof(xen_extraversion_t); |
---|
296 | break; |
---|
297 | case XENVER_compile_info: |
---|
298 | argsize = sizeof(xen_compile_info_t); |
---|
299 | break; |
---|
300 | case XENVER_capabilities: |
---|
301 | argsize = sizeof(xen_capabilities_info_t); |
---|
302 | break; |
---|
303 | case XENVER_changeset: |
---|
304 | argsize = sizeof(xen_changeset_info_t); |
---|
305 | break; |
---|
306 | case XENVER_platform_parameters: |
---|
307 | argsize = sizeof(xen_platform_parameters_t); |
---|
308 | break; |
---|
309 | case XENVER_pagesize: |
---|
310 | argsize = (arg == NULL) ? 0 : sizeof(void *); |
---|
311 | break; |
---|
312 | case XENVER_get_features: |
---|
313 | argsize = (arg == NULL) ? 0 : sizeof(xen_feature_info_t); |
---|
314 | break; |
---|
315 | |
---|
316 | default: |
---|
317 | printk("%s: unknown version op %d\n", __func__, cmd); |
---|
318 | return -ENOSYS; |
---|
319 | } |
---|
320 | |
---|
321 | rc = xencomm_create_mini(xc_area, &nbr_area, arg, argsize, &desc); |
---|
322 | if (rc) |
---|
323 | return rc; |
---|
324 | |
---|
325 | return xencomm_arch_hypercall_xen_version(cmd, desc); |
---|
326 | } |
---|
327 | EXPORT_SYMBOL(xencomm_mini_hypercall_xen_version); |
---|
328 | |
---|
329 | int |
---|
330 | xencomm_mini_hypercall_xenoprof_op(int op, void *arg) |
---|
331 | { |
---|
332 | unsigned int argsize; |
---|
333 | struct xencomm_mini xc_area[2]; |
---|
334 | int nbr_area = 2; |
---|
335 | struct xencomm_handle *desc; |
---|
336 | int rc; |
---|
337 | |
---|
338 | switch (op) { |
---|
339 | case XENOPROF_init: |
---|
340 | argsize = sizeof(xenoprof_init_t); |
---|
341 | break; |
---|
342 | case XENOPROF_set_active: |
---|
343 | argsize = sizeof(domid_t); |
---|
344 | break; |
---|
345 | case XENOPROF_set_passive: |
---|
346 | argsize = sizeof(xenoprof_passive_t); |
---|
347 | break; |
---|
348 | case XENOPROF_counter: |
---|
349 | argsize = sizeof(xenoprof_counter_t); |
---|
350 | break; |
---|
351 | case XENOPROF_get_buffer: |
---|
352 | argsize = sizeof(xenoprof_get_buffer_t); |
---|
353 | break; |
---|
354 | |
---|
355 | case XENOPROF_reset_active_list: |
---|
356 | case XENOPROF_reset_passive_list: |
---|
357 | case XENOPROF_reserve_counters: |
---|
358 | case XENOPROF_setup_events: |
---|
359 | case XENOPROF_enable_virq: |
---|
360 | case XENOPROF_start: |
---|
361 | case XENOPROF_stop: |
---|
362 | case XENOPROF_disable_virq: |
---|
363 | case XENOPROF_release_counters: |
---|
364 | case XENOPROF_shutdown: |
---|
365 | return xencomm_arch_hypercall_xenoprof_op(op, arg); |
---|
366 | |
---|
367 | default: |
---|
368 | printk("%s: op %d isn't supported\n", __func__, op); |
---|
369 | return -ENOSYS; |
---|
370 | } |
---|
371 | rc = xencomm_create_mini(xc_area, &nbr_area, arg, argsize, &desc); |
---|
372 | if (rc) |
---|
373 | return rc; |
---|
374 | return xencomm_arch_hypercall_xenoprof_op(op, desc); |
---|
375 | } |
---|
376 | EXPORT_SYMBOL_GPL(xencomm_mini_hypercall_xenoprof_op); |
---|
377 | |
---|
378 | int |
---|
379 | xencomm_mini_hypercall_perfmon_op(unsigned long cmd, void* arg, |
---|
380 | unsigned long count) |
---|
381 | { |
---|
382 | unsigned int argsize; |
---|
383 | struct xencomm_mini xc_area[2]; |
---|
384 | int nbr_area = 2; |
---|
385 | struct xencomm_handle *desc; |
---|
386 | int rc; |
---|
387 | |
---|
388 | switch (cmd) { |
---|
389 | case PFM_GET_FEATURES: |
---|
390 | argsize = sizeof(pfarg_features_t); |
---|
391 | break; |
---|
392 | case PFM_CREATE_CONTEXT: |
---|
393 | argsize = sizeof(pfarg_context_t); |
---|
394 | break; |
---|
395 | case PFM_LOAD_CONTEXT: |
---|
396 | argsize = sizeof(pfarg_load_t); |
---|
397 | break; |
---|
398 | case PFM_WRITE_PMCS: |
---|
399 | case PFM_WRITE_PMDS: |
---|
400 | argsize = sizeof(pfarg_reg_t) * count; |
---|
401 | break; |
---|
402 | |
---|
403 | case PFM_DESTROY_CONTEXT: |
---|
404 | case PFM_UNLOAD_CONTEXT: |
---|
405 | case PFM_START: |
---|
406 | case PFM_STOP: |
---|
407 | return xencomm_arch_hypercall_perfmon_op(cmd, arg, count); |
---|
408 | |
---|
409 | default: |
---|
410 | printk("%s:%d cmd %ld isn't supported\n", |
---|
411 | __func__, __LINE__, cmd); |
---|
412 | BUG(); |
---|
413 | } |
---|
414 | |
---|
415 | rc = xencomm_create_mini(xc_area, &nbr_area, arg, argsize, &desc); |
---|
416 | if (rc) |
---|
417 | return rc; |
---|
418 | return xencomm_arch_hypercall_perfmon_op(cmd, desc, count); |
---|
419 | } |
---|
420 | EXPORT_SYMBOL_GPL(xencomm_mini_hypercall_perfmon_op); |
---|
421 | |
---|
422 | int |
---|
423 | xencomm_mini_hypercall_sched_op(int cmd, void *arg) |
---|
424 | { |
---|
425 | int rc, nbr_area = 2; |
---|
426 | struct xencomm_mini xc_area[2]; |
---|
427 | struct xencomm_handle *desc; |
---|
428 | unsigned int argsize; |
---|
429 | |
---|
430 | switch (cmd) { |
---|
431 | case SCHEDOP_yield: |
---|
432 | case SCHEDOP_block: |
---|
433 | argsize = 0; |
---|
434 | break; |
---|
435 | case SCHEDOP_shutdown: |
---|
436 | argsize = sizeof(sched_shutdown_t); |
---|
437 | break; |
---|
438 | case SCHEDOP_poll: |
---|
439 | argsize = sizeof(sched_poll_t); |
---|
440 | break; |
---|
441 | case SCHEDOP_remote_shutdown: |
---|
442 | argsize = sizeof(sched_remote_shutdown_t); |
---|
443 | break; |
---|
444 | |
---|
445 | default: |
---|
446 | printk("%s: unknown sched op %d\n", __func__, cmd); |
---|
447 | return -ENOSYS; |
---|
448 | } |
---|
449 | |
---|
450 | rc = xencomm_create_mini(xc_area, &nbr_area, arg, argsize, &desc); |
---|
451 | if (rc) |
---|
452 | return rc; |
---|
453 | |
---|
454 | return xencomm_arch_hypercall_sched_op(cmd, desc); |
---|
455 | } |
---|
456 | EXPORT_SYMBOL_GPL(xencomm_mini_hypercall_sched_op); |
---|