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ad86b6c3 XZ |
1 | /* |
2 | * PAL/SAL call delegation | |
3 | * | |
4 | * Copyright (c) 2004 Li Susie <susie.li@intel.com> | |
5 | * Copyright (c) 2005 Yu Ke <ke.yu@intel.com> | |
6 | * Copyright (c) 2007 Xiantao Zhang <xiantao.zhang@intel.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms and conditions of the GNU General Public License, | |
10 | * version 2, as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
19 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
20 | */ | |
21 | ||
22 | #include <linux/kvm_host.h> | |
23 | #include <linux/smp.h> | |
24 | ||
25 | #include "vti.h" | |
26 | #include "misc.h" | |
27 | ||
28 | #include <asm/pal.h> | |
29 | #include <asm/sal.h> | |
30 | #include <asm/tlb.h> | |
31 | ||
32 | /* | |
33 | * Handy macros to make sure that the PAL return values start out | |
34 | * as something meaningful. | |
35 | */ | |
36 | #define INIT_PAL_STATUS_UNIMPLEMENTED(x) \ | |
37 | { \ | |
38 | x.status = PAL_STATUS_UNIMPLEMENTED; \ | |
39 | x.v0 = 0; \ | |
40 | x.v1 = 0; \ | |
41 | x.v2 = 0; \ | |
42 | } | |
43 | ||
44 | #define INIT_PAL_STATUS_SUCCESS(x) \ | |
45 | { \ | |
46 | x.status = PAL_STATUS_SUCCESS; \ | |
47 | x.v0 = 0; \ | |
48 | x.v1 = 0; \ | |
49 | x.v2 = 0; \ | |
50 | } | |
51 | ||
52 | static void kvm_get_pal_call_data(struct kvm_vcpu *vcpu, | |
53 | u64 *gr28, u64 *gr29, u64 *gr30, u64 *gr31) { | |
54 | struct exit_ctl_data *p; | |
55 | ||
56 | if (vcpu) { | |
57 | p = &vcpu->arch.exit_data; | |
58 | if (p->exit_reason == EXIT_REASON_PAL_CALL) { | |
59 | *gr28 = p->u.pal_data.gr28; | |
60 | *gr29 = p->u.pal_data.gr29; | |
61 | *gr30 = p->u.pal_data.gr30; | |
62 | *gr31 = p->u.pal_data.gr31; | |
63 | return ; | |
64 | } | |
65 | } | |
66 | printk(KERN_DEBUG"Failed to get vcpu pal data!!!\n"); | |
67 | } | |
68 | ||
69 | static void set_pal_result(struct kvm_vcpu *vcpu, | |
70 | struct ia64_pal_retval result) { | |
71 | ||
72 | struct exit_ctl_data *p; | |
73 | ||
74 | p = kvm_get_exit_data(vcpu); | |
75 | if (p && p->exit_reason == EXIT_REASON_PAL_CALL) { | |
76 | p->u.pal_data.ret = result; | |
77 | return ; | |
78 | } | |
79 | INIT_PAL_STATUS_UNIMPLEMENTED(p->u.pal_data.ret); | |
80 | } | |
81 | ||
82 | static void set_sal_result(struct kvm_vcpu *vcpu, | |
83 | struct sal_ret_values result) { | |
84 | struct exit_ctl_data *p; | |
85 | ||
86 | p = kvm_get_exit_data(vcpu); | |
87 | if (p && p->exit_reason == EXIT_REASON_SAL_CALL) { | |
88 | p->u.sal_data.ret = result; | |
89 | return ; | |
90 | } | |
91 | printk(KERN_WARNING"Failed to set sal result!!\n"); | |
92 | } | |
93 | ||
94 | struct cache_flush_args { | |
95 | u64 cache_type; | |
96 | u64 operation; | |
97 | u64 progress; | |
98 | long status; | |
99 | }; | |
100 | ||
101 | cpumask_t cpu_cache_coherent_map; | |
102 | ||
103 | static void remote_pal_cache_flush(void *data) | |
104 | { | |
105 | struct cache_flush_args *args = data; | |
106 | long status; | |
107 | u64 progress = args->progress; | |
108 | ||
109 | status = ia64_pal_cache_flush(args->cache_type, args->operation, | |
110 | &progress, NULL); | |
111 | if (status != 0) | |
112 | args->status = status; | |
113 | } | |
114 | ||
115 | static struct ia64_pal_retval pal_cache_flush(struct kvm_vcpu *vcpu) | |
116 | { | |
117 | u64 gr28, gr29, gr30, gr31; | |
118 | struct ia64_pal_retval result = {0, 0, 0, 0}; | |
119 | struct cache_flush_args args = {0, 0, 0, 0}; | |
120 | long psr; | |
121 | ||
122 | gr28 = gr29 = gr30 = gr31 = 0; | |
123 | kvm_get_pal_call_data(vcpu, &gr28, &gr29, &gr30, &gr31); | |
124 | ||
125 | if (gr31 != 0) | |
126 | printk(KERN_ERR"vcpu:%p called cache_flush error!\n", vcpu); | |
127 | ||
128 | /* Always call Host Pal in int=1 */ | |
129 | gr30 &= ~PAL_CACHE_FLUSH_CHK_INTRS; | |
130 | args.cache_type = gr29; | |
131 | args.operation = gr30; | |
132 | smp_call_function(remote_pal_cache_flush, | |
2f73ccab | 133 | (void *)&args, 1); |
ad86b6c3 XZ |
134 | if (args.status != 0) |
135 | printk(KERN_ERR"pal_cache_flush error!," | |
136 | "status:0x%lx\n", args.status); | |
137 | /* | |
138 | * Call Host PAL cache flush | |
139 | * Clear psr.ic when call PAL_CACHE_FLUSH | |
140 | */ | |
141 | local_irq_save(psr); | |
142 | result.status = ia64_pal_cache_flush(gr29, gr30, &result.v1, | |
143 | &result.v0); | |
144 | local_irq_restore(psr); | |
145 | if (result.status != 0) | |
146 | printk(KERN_ERR"vcpu:%p crashed due to cache_flush err:%ld" | |
147 | "in1:%lx,in2:%lx\n", | |
148 | vcpu, result.status, gr29, gr30); | |
149 | ||
150 | #if 0 | |
151 | if (gr29 == PAL_CACHE_TYPE_COHERENT) { | |
152 | cpus_setall(vcpu->arch.cache_coherent_map); | |
153 | cpu_clear(vcpu->cpu, vcpu->arch.cache_coherent_map); | |
154 | cpus_setall(cpu_cache_coherent_map); | |
155 | cpu_clear(vcpu->cpu, cpu_cache_coherent_map); | |
156 | } | |
157 | #endif | |
158 | return result; | |
159 | } | |
160 | ||
161 | struct ia64_pal_retval pal_cache_summary(struct kvm_vcpu *vcpu) | |
162 | { | |
163 | ||
164 | struct ia64_pal_retval result; | |
165 | ||
166 | PAL_CALL(result, PAL_CACHE_SUMMARY, 0, 0, 0); | |
167 | return result; | |
168 | } | |
169 | ||
170 | static struct ia64_pal_retval pal_freq_base(struct kvm_vcpu *vcpu) | |
171 | { | |
172 | ||
173 | struct ia64_pal_retval result; | |
174 | ||
175 | PAL_CALL(result, PAL_FREQ_BASE, 0, 0, 0); | |
176 | ||
177 | /* | |
178 | * PAL_FREQ_BASE may not be implemented in some platforms, | |
179 | * call SAL instead. | |
180 | */ | |
181 | if (result.v0 == 0) { | |
182 | result.status = ia64_sal_freq_base(SAL_FREQ_BASE_PLATFORM, | |
183 | &result.v0, | |
184 | &result.v1); | |
185 | result.v2 = 0; | |
186 | } | |
187 | ||
188 | return result; | |
189 | } | |
190 | ||
191 | static struct ia64_pal_retval pal_freq_ratios(struct kvm_vcpu *vcpu) | |
192 | { | |
193 | ||
194 | struct ia64_pal_retval result; | |
195 | ||
196 | PAL_CALL(result, PAL_FREQ_RATIOS, 0, 0, 0); | |
197 | return result; | |
198 | } | |
199 | ||
200 | static struct ia64_pal_retval pal_logical_to_physica(struct kvm_vcpu *vcpu) | |
201 | { | |
202 | struct ia64_pal_retval result; | |
203 | ||
204 | INIT_PAL_STATUS_UNIMPLEMENTED(result); | |
205 | return result; | |
206 | } | |
207 | ||
208 | static struct ia64_pal_retval pal_platform_addr(struct kvm_vcpu *vcpu) | |
209 | { | |
210 | ||
211 | struct ia64_pal_retval result; | |
212 | ||
213 | INIT_PAL_STATUS_SUCCESS(result); | |
214 | return result; | |
215 | } | |
216 | ||
217 | static struct ia64_pal_retval pal_proc_get_features(struct kvm_vcpu *vcpu) | |
218 | { | |
219 | ||
220 | struct ia64_pal_retval result = {0, 0, 0, 0}; | |
221 | long in0, in1, in2, in3; | |
222 | ||
223 | kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3); | |
224 | result.status = ia64_pal_proc_get_features(&result.v0, &result.v1, | |
225 | &result.v2, in2); | |
226 | ||
227 | return result; | |
228 | } | |
229 | ||
230 | static struct ia64_pal_retval pal_cache_info(struct kvm_vcpu *vcpu) | |
231 | { | |
232 | ||
233 | pal_cache_config_info_t ci; | |
234 | long status; | |
235 | unsigned long in0, in1, in2, in3, r9, r10; | |
236 | ||
237 | kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3); | |
238 | status = ia64_pal_cache_config_info(in1, in2, &ci); | |
239 | r9 = ci.pcci_info_1.pcci1_data; | |
240 | r10 = ci.pcci_info_2.pcci2_data; | |
241 | return ((struct ia64_pal_retval){status, r9, r10, 0}); | |
242 | } | |
243 | ||
244 | #define GUEST_IMPL_VA_MSB 59 | |
245 | #define GUEST_RID_BITS 18 | |
246 | ||
247 | static struct ia64_pal_retval pal_vm_summary(struct kvm_vcpu *vcpu) | |
248 | { | |
249 | ||
250 | pal_vm_info_1_u_t vminfo1; | |
251 | pal_vm_info_2_u_t vminfo2; | |
252 | struct ia64_pal_retval result; | |
253 | ||
254 | PAL_CALL(result, PAL_VM_SUMMARY, 0, 0, 0); | |
255 | if (!result.status) { | |
256 | vminfo1.pvi1_val = result.v0; | |
257 | vminfo1.pal_vm_info_1_s.max_itr_entry = 8; | |
258 | vminfo1.pal_vm_info_1_s.max_dtr_entry = 8; | |
259 | result.v0 = vminfo1.pvi1_val; | |
260 | vminfo2.pal_vm_info_2_s.impl_va_msb = GUEST_IMPL_VA_MSB; | |
261 | vminfo2.pal_vm_info_2_s.rid_size = GUEST_RID_BITS; | |
262 | result.v1 = vminfo2.pvi2_val; | |
263 | } | |
264 | ||
265 | return result; | |
266 | } | |
267 | ||
268 | static struct ia64_pal_retval pal_vm_info(struct kvm_vcpu *vcpu) | |
269 | { | |
270 | struct ia64_pal_retval result; | |
271 | ||
272 | INIT_PAL_STATUS_UNIMPLEMENTED(result); | |
273 | ||
274 | return result; | |
275 | } | |
276 | ||
277 | static u64 kvm_get_pal_call_index(struct kvm_vcpu *vcpu) | |
278 | { | |
279 | u64 index = 0; | |
280 | struct exit_ctl_data *p; | |
281 | ||
282 | p = kvm_get_exit_data(vcpu); | |
283 | if (p && (p->exit_reason == EXIT_REASON_PAL_CALL)) | |
284 | index = p->u.pal_data.gr28; | |
285 | ||
286 | return index; | |
287 | } | |
288 | ||
289 | int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
290 | { | |
291 | ||
292 | u64 gr28; | |
293 | struct ia64_pal_retval result; | |
294 | int ret = 1; | |
295 | ||
296 | gr28 = kvm_get_pal_call_index(vcpu); | |
297 | /*printk("pal_call index:%lx\n",gr28);*/ | |
298 | switch (gr28) { | |
299 | case PAL_CACHE_FLUSH: | |
300 | result = pal_cache_flush(vcpu); | |
301 | break; | |
302 | case PAL_CACHE_SUMMARY: | |
303 | result = pal_cache_summary(vcpu); | |
304 | break; | |
305 | case PAL_HALT_LIGHT: | |
306 | { | |
307 | vcpu->arch.timer_pending = 1; | |
308 | INIT_PAL_STATUS_SUCCESS(result); | |
309 | if (kvm_highest_pending_irq(vcpu) == -1) | |
310 | ret = kvm_emulate_halt(vcpu); | |
311 | ||
312 | } | |
313 | break; | |
314 | ||
315 | case PAL_FREQ_RATIOS: | |
316 | result = pal_freq_ratios(vcpu); | |
317 | break; | |
318 | ||
319 | case PAL_FREQ_BASE: | |
320 | result = pal_freq_base(vcpu); | |
321 | break; | |
322 | ||
323 | case PAL_LOGICAL_TO_PHYSICAL : | |
324 | result = pal_logical_to_physica(vcpu); | |
325 | break; | |
326 | ||
327 | case PAL_VM_SUMMARY : | |
328 | result = pal_vm_summary(vcpu); | |
329 | break; | |
330 | ||
331 | case PAL_VM_INFO : | |
332 | result = pal_vm_info(vcpu); | |
333 | break; | |
334 | case PAL_PLATFORM_ADDR : | |
335 | result = pal_platform_addr(vcpu); | |
336 | break; | |
337 | case PAL_CACHE_INFO: | |
338 | result = pal_cache_info(vcpu); | |
339 | break; | |
340 | case PAL_PTCE_INFO: | |
341 | INIT_PAL_STATUS_SUCCESS(result); | |
342 | result.v1 = (1L << 32) | 1L; | |
343 | break; | |
344 | case PAL_VM_PAGE_SIZE: | |
345 | result.status = ia64_pal_vm_page_size(&result.v0, | |
346 | &result.v1); | |
347 | break; | |
348 | case PAL_RSE_INFO: | |
349 | result.status = ia64_pal_rse_info(&result.v0, | |
350 | (pal_hints_u_t *)&result.v1); | |
351 | break; | |
352 | case PAL_PROC_GET_FEATURES: | |
353 | result = pal_proc_get_features(vcpu); | |
354 | break; | |
355 | case PAL_DEBUG_INFO: | |
356 | result.status = ia64_pal_debug_info(&result.v0, | |
357 | &result.v1); | |
358 | break; | |
359 | case PAL_VERSION: | |
360 | result.status = ia64_pal_version( | |
361 | (pal_version_u_t *)&result.v0, | |
362 | (pal_version_u_t *)&result.v1); | |
363 | ||
364 | break; | |
365 | case PAL_FIXED_ADDR: | |
366 | result.status = PAL_STATUS_SUCCESS; | |
367 | result.v0 = vcpu->vcpu_id; | |
368 | break; | |
369 | default: | |
370 | INIT_PAL_STATUS_UNIMPLEMENTED(result); | |
371 | printk(KERN_WARNING"kvm: Unsupported pal call," | |
372 | " index:0x%lx\n", gr28); | |
373 | } | |
374 | set_pal_result(vcpu, result); | |
375 | return ret; | |
376 | } | |
377 | ||
378 | static struct sal_ret_values sal_emulator(struct kvm *kvm, | |
379 | long index, unsigned long in1, | |
380 | unsigned long in2, unsigned long in3, | |
381 | unsigned long in4, unsigned long in5, | |
382 | unsigned long in6, unsigned long in7) | |
383 | { | |
384 | unsigned long r9 = 0; | |
385 | unsigned long r10 = 0; | |
386 | long r11 = 0; | |
387 | long status; | |
388 | ||
389 | status = 0; | |
390 | switch (index) { | |
391 | case SAL_FREQ_BASE: | |
392 | status = ia64_sal_freq_base(in1, &r9, &r10); | |
393 | break; | |
394 | case SAL_PCI_CONFIG_READ: | |
395 | printk(KERN_WARNING"kvm: Not allowed to call here!" | |
396 | " SAL_PCI_CONFIG_READ\n"); | |
397 | break; | |
398 | case SAL_PCI_CONFIG_WRITE: | |
399 | printk(KERN_WARNING"kvm: Not allowed to call here!" | |
400 | " SAL_PCI_CONFIG_WRITE\n"); | |
401 | break; | |
402 | case SAL_SET_VECTORS: | |
403 | if (in1 == SAL_VECTOR_OS_BOOT_RENDEZ) { | |
404 | if (in4 != 0 || in5 != 0 || in6 != 0 || in7 != 0) { | |
405 | status = -2; | |
406 | } else { | |
407 | kvm->arch.rdv_sal_data.boot_ip = in2; | |
408 | kvm->arch.rdv_sal_data.boot_gp = in3; | |
409 | } | |
410 | printk("Rendvous called! iip:%lx\n\n", in2); | |
411 | } else | |
412 | printk(KERN_WARNING"kvm: CALLED SAL_SET_VECTORS %lu." | |
413 | "ignored...\n", in1); | |
414 | break; | |
415 | case SAL_GET_STATE_INFO: | |
416 | /* No more info. */ | |
417 | status = -5; | |
418 | r9 = 0; | |
419 | break; | |
420 | case SAL_GET_STATE_INFO_SIZE: | |
421 | /* Return a dummy size. */ | |
422 | status = 0; | |
423 | r9 = 128; | |
424 | break; | |
425 | case SAL_CLEAR_STATE_INFO: | |
426 | /* Noop. */ | |
427 | break; | |
428 | case SAL_MC_RENDEZ: | |
429 | printk(KERN_WARNING | |
430 | "kvm: called SAL_MC_RENDEZ. ignored...\n"); | |
431 | break; | |
432 | case SAL_MC_SET_PARAMS: | |
433 | printk(KERN_WARNING | |
434 | "kvm: called SAL_MC_SET_PARAMS.ignored!\n"); | |
435 | break; | |
436 | case SAL_CACHE_FLUSH: | |
437 | if (1) { | |
438 | /*Flush using SAL. | |
439 | This method is faster but has a side | |
440 | effect on other vcpu running on | |
441 | this cpu. */ | |
442 | status = ia64_sal_cache_flush(in1); | |
443 | } else { | |
444 | /*Maybe need to implement the method | |
445 | without side effect!*/ | |
446 | status = 0; | |
447 | } | |
448 | break; | |
449 | case SAL_CACHE_INIT: | |
450 | printk(KERN_WARNING | |
451 | "kvm: called SAL_CACHE_INIT. ignored...\n"); | |
452 | break; | |
453 | case SAL_UPDATE_PAL: | |
454 | printk(KERN_WARNING | |
455 | "kvm: CALLED SAL_UPDATE_PAL. ignored...\n"); | |
456 | break; | |
457 | default: | |
458 | printk(KERN_WARNING"kvm: called SAL_CALL with unknown index." | |
459 | " index:%ld\n", index); | |
460 | status = -1; | |
461 | break; | |
462 | } | |
463 | return ((struct sal_ret_values) {status, r9, r10, r11}); | |
464 | } | |
465 | ||
466 | static void kvm_get_sal_call_data(struct kvm_vcpu *vcpu, u64 *in0, u64 *in1, | |
467 | u64 *in2, u64 *in3, u64 *in4, u64 *in5, u64 *in6, u64 *in7){ | |
468 | ||
469 | struct exit_ctl_data *p; | |
470 | ||
471 | p = kvm_get_exit_data(vcpu); | |
472 | ||
473 | if (p) { | |
474 | if (p->exit_reason == EXIT_REASON_SAL_CALL) { | |
475 | *in0 = p->u.sal_data.in0; | |
476 | *in1 = p->u.sal_data.in1; | |
477 | *in2 = p->u.sal_data.in2; | |
478 | *in3 = p->u.sal_data.in3; | |
479 | *in4 = p->u.sal_data.in4; | |
480 | *in5 = p->u.sal_data.in5; | |
481 | *in6 = p->u.sal_data.in6; | |
482 | *in7 = p->u.sal_data.in7; | |
483 | return ; | |
484 | } | |
485 | } | |
486 | *in0 = 0; | |
487 | } | |
488 | ||
489 | void kvm_sal_emul(struct kvm_vcpu *vcpu) | |
490 | { | |
491 | ||
492 | struct sal_ret_values result; | |
493 | u64 index, in1, in2, in3, in4, in5, in6, in7; | |
494 | ||
495 | kvm_get_sal_call_data(vcpu, &index, &in1, &in2, | |
496 | &in3, &in4, &in5, &in6, &in7); | |
497 | result = sal_emulator(vcpu->kvm, index, in1, in2, in3, | |
498 | in4, in5, in6, in7); | |
499 | set_sal_result(vcpu, result); | |
500 | } |