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12e364b9 KC |
1 | /* visorchipset_main.c |
2 | * | |
f6d0c1e6 | 3 | * Copyright (C) 2010 - 2013 UNISYS CORPORATION |
12e364b9 KC |
4 | * All rights reserved. |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or (at | |
9 | * your option) any later version. | |
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, GOOD TITLE or | |
14 | * NON INFRINGEMENT. See the GNU General Public License for more | |
15 | * details. | |
16 | */ | |
17 | ||
18 | #include "globals.h" | |
12e364b9 KC |
19 | #include "visorchipset.h" |
20 | #include "procobjecttree.h" | |
21 | #include "visorchannel.h" | |
22 | #include "periodic_work.h" | |
12e364b9 KC |
23 | #include "file.h" |
24 | #include "parser.h" | |
12e364b9 | 25 | #include "uisutils.h" |
12e364b9 KC |
26 | #include "controlvmcompletionstatus.h" |
27 | #include "guestlinuxdebug.h" | |
12e364b9 KC |
28 | |
29 | #include <linux/nls.h> | |
30 | #include <linux/netdevice.h> | |
31 | #include <linux/platform_device.h> | |
90addb02 | 32 | #include <linux/uuid.h> |
12e364b9 KC |
33 | |
34 | #define CURRENT_FILE_PC VISOR_CHIPSET_PC_visorchipset_main_c | |
35 | #define TEST_VNIC_PHYSITF "eth0" /* physical network itf for | |
36 | * vnic loopback test */ | |
37 | #define TEST_VNIC_SWITCHNO 1 | |
38 | #define TEST_VNIC_BUSNO 9 | |
39 | ||
40 | #define MAX_NAME_SIZE 128 | |
41 | #define MAX_IP_SIZE 50 | |
42 | #define MAXOUTSTANDINGCHANNELCOMMAND 256 | |
43 | #define POLLJIFFIES_CONTROLVMCHANNEL_FAST 1 | |
44 | #define POLLJIFFIES_CONTROLVMCHANNEL_SLOW 100 | |
45 | ||
46 | /* When the controlvm channel is idle for at least MIN_IDLE_SECONDS, | |
47 | * we switch to slow polling mode. As soon as we get a controlvm | |
48 | * message, we switch back to fast polling mode. | |
49 | */ | |
50 | #define MIN_IDLE_SECONDS 10 | |
911e213e | 51 | static ulong poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; |
bd5b9b32 KC |
52 | static ulong Most_recent_message_jiffies; /* when we got our last |
53 | * controlvm message */ | |
12e364b9 KC |
54 | static inline char * |
55 | NONULLSTR(char *s) | |
56 | { | |
57 | if (s) | |
58 | return s; | |
e22a4a0f | 59 | return ""; |
12e364b9 KC |
60 | } |
61 | ||
62 | static int serverregistered; | |
63 | static int clientregistered; | |
64 | ||
65 | #define MAX_CHIPSET_EVENTS 2 | |
c242233e | 66 | static u8 chipset_events[MAX_CHIPSET_EVENTS] = { 0, 0 }; |
12e364b9 KC |
67 | |
68 | static struct delayed_work Periodic_controlvm_work; | |
69 | static struct workqueue_struct *Periodic_controlvm_workqueue; | |
bd5b9b32 | 70 | static DEFINE_SEMAPHORE(NotifierLock); |
12e364b9 | 71 | |
98d7b594 BR |
72 | static struct controlvm_message_header g_DiagMsgHdr; |
73 | static struct controlvm_message_header g_ChipSetMsgHdr; | |
74 | static struct controlvm_message_header g_DelDumpMsgHdr; | |
90addb02 | 75 | static const uuid_le UltraDiagPoolChannelProtocolGuid = |
9eee5d1f | 76 | SPAR_DIAG_POOL_CHANNEL_PROTOCOL_UUID; |
12e364b9 KC |
77 | /* 0xffffff is an invalid Bus/Device number */ |
78 | static ulong g_diagpoolBusNo = 0xffffff; | |
79 | static ulong g_diagpoolDevNo = 0xffffff; | |
2ea5117b | 80 | static struct controlvm_message_packet g_DeviceChangeStatePacket; |
12e364b9 KC |
81 | |
82 | /* Only VNIC and VHBA channels are sent to visorclientbus (aka | |
83 | * "visorhackbus") | |
84 | */ | |
85 | #define FOR_VISORHACKBUS(channel_type_guid) \ | |
9eee5d1f BR |
86 | (((uuid_le_cmp(channel_type_guid,\ |
87 | spar_vnic_channel_protocol_uuid) == 0)\ | |
88 | || (uuid_le_cmp(channel_type_guid,\ | |
89 | spar_vhba_channel_protocol_uuid) == 0))) | |
12e364b9 KC |
90 | #define FOR_VISORBUS(channel_type_guid) (!(FOR_VISORHACKBUS(channel_type_guid))) |
91 | ||
92 | #define is_diagpool_channel(channel_type_guid) \ | |
90addb02 | 93 | (uuid_le_cmp(channel_type_guid, UltraDiagPoolChannelProtocolGuid) == 0) |
12e364b9 | 94 | |
12e364b9 KC |
95 | static LIST_HEAD(BusInfoList); |
96 | static LIST_HEAD(DevInfoList); | |
97 | ||
383df64e | 98 | static struct visorchannel *ControlVm_channel; |
12e364b9 | 99 | |
84b11dfd | 100 | struct controlvm_payload_info { |
c242233e | 101 | u8 __iomem *ptr; /* pointer to base address of payload pool */ |
5fc0229a | 102 | u64 offset; /* offset from beginning of controlvm |
12e364b9 | 103 | * channel to beginning of payload * pool */ |
b3c55b13 | 104 | u32 bytes; /* number of bytes in payload pool */ |
84b11dfd | 105 | }; |
12e364b9 KC |
106 | |
107 | /* Manages the request payload in the controlvm channel */ | |
84b11dfd | 108 | static struct controlvm_payload_info ControlVm_payload_info; |
12e364b9 | 109 | |
9fd1b95a | 110 | static struct channel_header *Test_Vnic_channel; |
12e364b9 | 111 | |
84b11dfd | 112 | struct livedump_info { |
98d7b594 BR |
113 | struct controlvm_message_header Dumpcapture_header; |
114 | struct controlvm_message_header Gettextdump_header; | |
115 | struct controlvm_message_header Dumpcomplete_header; | |
12e364b9 KC |
116 | BOOL Gettextdump_outstanding; |
117 | u32 crc32; | |
118 | ulong length; | |
119 | atomic_t buffers_in_use; | |
120 | ulong destination; | |
84b11dfd | 121 | }; |
12e364b9 KC |
122 | /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE / |
123 | * CONTROLVM_DUMP_GETTEXTDUMP / CONTROLVM_DUMP_COMPLETE conversation. | |
124 | */ | |
84b11dfd | 125 | static struct livedump_info LiveDump_info; |
12e364b9 KC |
126 | |
127 | /* The following globals are used to handle the scenario where we are unable to | |
128 | * offload the payload from a controlvm message due to memory requirements. In | |
129 | * this scenario, we simply stash the controlvm message, then attempt to | |
130 | * process it again the next time controlvm_periodic_work() runs. | |
131 | */ | |
3ab47701 | 132 | static struct controlvm_message ControlVm_Pending_Msg; |
12e364b9 KC |
133 | static BOOL ControlVm_Pending_Msg_Valid = FALSE; |
134 | ||
135 | /* Pool of struct putfile_buffer_entry, for keeping track of pending (incoming) | |
136 | * TRANSMIT_FILE PutFile payloads. | |
137 | */ | |
138 | static struct kmem_cache *Putfile_buffer_list_pool; | |
139 | static const char Putfile_buffer_list_pool_name[] = | |
140 | "controlvm_putfile_buffer_list_pool"; | |
141 | ||
142 | /* This identifies a data buffer that has been received via a controlvm messages | |
143 | * in a remote --> local CONTROLVM_TRANSMIT_FILE conversation. | |
144 | */ | |
145 | struct putfile_buffer_entry { | |
146 | struct list_head next; /* putfile_buffer_entry list */ | |
317d9614 | 147 | struct parser_context *parser_ctx; /* points to input data buffer */ |
12e364b9 KC |
148 | }; |
149 | ||
150 | /* List of struct putfile_request *, via next_putfile_request member. | |
151 | * Each entry in this list identifies an outstanding TRANSMIT_FILE | |
152 | * conversation. | |
153 | */ | |
154 | static LIST_HEAD(Putfile_request_list); | |
155 | ||
156 | /* This describes a buffer and its current state of transfer (e.g., how many | |
157 | * bytes have already been supplied as putfile data, and how many bytes are | |
158 | * remaining) for a putfile_request. | |
159 | */ | |
160 | struct putfile_active_buffer { | |
161 | /* a payload from a controlvm message, containing a file data buffer */ | |
317d9614 | 162 | struct parser_context *parser_ctx; |
12e364b9 KC |
163 | /* points within data area of parser_ctx to next byte of data */ |
164 | u8 *pnext; | |
165 | /* # bytes left from <pnext> to the end of this data buffer */ | |
166 | size_t bytes_remaining; | |
167 | }; | |
168 | ||
169 | #define PUTFILE_REQUEST_SIG 0x0906101302281211 | |
170 | /* This identifies a single remote --> local CONTROLVM_TRANSMIT_FILE | |
171 | * conversation. Structs of this type are dynamically linked into | |
172 | * <Putfile_request_list>. | |
173 | */ | |
174 | struct putfile_request { | |
175 | u64 sig; /* PUTFILE_REQUEST_SIG */ | |
176 | ||
177 | /* header from original TransmitFile request */ | |
98d7b594 | 178 | struct controlvm_message_header controlvm_header; |
12e364b9 KC |
179 | u64 file_request_number; /* from original TransmitFile request */ |
180 | ||
181 | /* link to next struct putfile_request */ | |
182 | struct list_head next_putfile_request; | |
183 | ||
184 | /* most-recent sequence number supplied via a controlvm message */ | |
185 | u64 data_sequence_number; | |
186 | ||
187 | /* head of putfile_buffer_entry list, which describes the data to be | |
188 | * supplied as putfile data; | |
189 | * - this list is added to when controlvm messages come in that supply | |
190 | * file data | |
191 | * - this list is removed from via the hotplug program that is actually | |
192 | * consuming these buffers to write as file data */ | |
193 | struct list_head input_buffer_list; | |
194 | spinlock_t req_list_lock; /* lock for input_buffer_list */ | |
195 | ||
196 | /* waiters for input_buffer_list to go non-empty */ | |
197 | wait_queue_head_t input_buffer_wq; | |
198 | ||
199 | /* data not yet read within current putfile_buffer_entry */ | |
200 | struct putfile_active_buffer active_buf; | |
201 | ||
202 | /* <0 = failed, 0 = in-progress, >0 = successful; */ | |
203 | /* note that this must be set with req_list_lock, and if you set <0, */ | |
204 | /* it is your responsibility to also free up all of the other objects */ | |
205 | /* in this struct (like input_buffer_list, active_buf.parser_ctx) */ | |
206 | /* before releasing the lock */ | |
207 | int completion_status; | |
208 | }; | |
209 | ||
bd5b9b32 | 210 | static atomic_t Visorchipset_cache_buffers_in_use = ATOMIC_INIT(0); |
12e364b9 KC |
211 | |
212 | struct parahotplug_request { | |
213 | struct list_head list; | |
214 | int id; | |
215 | unsigned long expiration; | |
3ab47701 | 216 | struct controlvm_message msg; |
12e364b9 KC |
217 | }; |
218 | ||
219 | static LIST_HEAD(Parahotplug_request_list); | |
220 | static DEFINE_SPINLOCK(Parahotplug_request_list_lock); /* lock for above */ | |
221 | static void parahotplug_process_list(void); | |
222 | ||
223 | /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE / | |
224 | * CONTROLVM_REPORTEVENT. | |
225 | */ | |
fe90d892 BR |
226 | static struct visorchipset_busdev_notifiers BusDev_Server_Notifiers; |
227 | static struct visorchipset_busdev_notifiers BusDev_Client_Notifiers; | |
12e364b9 KC |
228 | |
229 | static void bus_create_response(ulong busNo, int response); | |
230 | static void bus_destroy_response(ulong busNo, int response); | |
231 | static void device_create_response(ulong busNo, ulong devNo, int response); | |
232 | static void device_destroy_response(ulong busNo, ulong devNo, int response); | |
233 | static void device_resume_response(ulong busNo, ulong devNo, int response); | |
234 | ||
929aa8ae | 235 | static struct visorchipset_busdev_responders BusDev_Responders = { |
12e364b9 KC |
236 | .bus_create = bus_create_response, |
237 | .bus_destroy = bus_destroy_response, | |
238 | .device_create = device_create_response, | |
239 | .device_destroy = device_destroy_response, | |
927c7927 | 240 | .device_pause = visorchipset_device_pause_response, |
12e364b9 KC |
241 | .device_resume = device_resume_response, |
242 | }; | |
243 | ||
244 | /* info for /dev/visorchipset */ | |
245 | static dev_t MajorDev = -1; /**< indicates major num for device */ | |
246 | ||
19f6634f BR |
247 | /* prototypes for attributes */ |
248 | static ssize_t toolaction_show(struct device *dev, | |
249 | struct device_attribute *attr, char *buf); | |
250 | static ssize_t toolaction_store(struct device *dev, | |
251 | struct device_attribute *attr, const char *buf, size_t count); | |
252 | static DEVICE_ATTR_RW(toolaction); | |
253 | ||
54b31229 BR |
254 | static ssize_t boottotool_show(struct device *dev, |
255 | struct device_attribute *attr, char *buf); | |
256 | static ssize_t boottotool_store(struct device *dev, | |
257 | struct device_attribute *attr, const char *buf, size_t count); | |
258 | static DEVICE_ATTR_RW(boottotool); | |
259 | ||
422af17c BR |
260 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, |
261 | char *buf); | |
262 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, | |
263 | const char *buf, size_t count); | |
264 | static DEVICE_ATTR_RW(error); | |
265 | ||
266 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, | |
267 | char *buf); | |
268 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, | |
269 | const char *buf, size_t count); | |
270 | static DEVICE_ATTR_RW(textid); | |
271 | ||
272 | static ssize_t remaining_steps_show(struct device *dev, | |
273 | struct device_attribute *attr, char *buf); | |
274 | static ssize_t remaining_steps_store(struct device *dev, | |
275 | struct device_attribute *attr, const char *buf, size_t count); | |
276 | static DEVICE_ATTR_RW(remaining_steps); | |
277 | ||
18b87ed1 BR |
278 | static ssize_t chipsetready_store(struct device *dev, |
279 | struct device_attribute *attr, const char *buf, size_t count); | |
280 | static DEVICE_ATTR_WO(chipsetready); | |
281 | ||
e56fa7cd BR |
282 | static ssize_t devicedisabled_store(struct device *dev, |
283 | struct device_attribute *attr, const char *buf, size_t count); | |
284 | static DEVICE_ATTR_WO(devicedisabled); | |
285 | ||
286 | static ssize_t deviceenabled_store(struct device *dev, | |
287 | struct device_attribute *attr, const char *buf, size_t count); | |
288 | static DEVICE_ATTR_WO(deviceenabled); | |
289 | ||
19f6634f BR |
290 | static struct attribute *visorchipset_install_attrs[] = { |
291 | &dev_attr_toolaction.attr, | |
54b31229 | 292 | &dev_attr_boottotool.attr, |
422af17c BR |
293 | &dev_attr_error.attr, |
294 | &dev_attr_textid.attr, | |
295 | &dev_attr_remaining_steps.attr, | |
19f6634f BR |
296 | NULL |
297 | }; | |
298 | ||
299 | static struct attribute_group visorchipset_install_group = { | |
300 | .name = "install", | |
301 | .attrs = visorchipset_install_attrs | |
302 | }; | |
303 | ||
18b87ed1 BR |
304 | static struct attribute *visorchipset_guest_attrs[] = { |
305 | &dev_attr_chipsetready.attr, | |
306 | NULL | |
307 | }; | |
308 | ||
309 | static struct attribute_group visorchipset_guest_group = { | |
310 | .name = "guest", | |
311 | .attrs = visorchipset_guest_attrs | |
312 | }; | |
313 | ||
e56fa7cd BR |
314 | static struct attribute *visorchipset_parahotplug_attrs[] = { |
315 | &dev_attr_devicedisabled.attr, | |
316 | &dev_attr_deviceenabled.attr, | |
317 | NULL | |
318 | }; | |
319 | ||
320 | static struct attribute_group visorchipset_parahotplug_group = { | |
321 | .name = "parahotplug", | |
322 | .attrs = visorchipset_parahotplug_attrs | |
323 | }; | |
324 | ||
19f6634f BR |
325 | static const struct attribute_group *visorchipset_dev_groups[] = { |
326 | &visorchipset_install_group, | |
18b87ed1 | 327 | &visorchipset_guest_group, |
e56fa7cd | 328 | &visorchipset_parahotplug_group, |
19f6634f BR |
329 | NULL |
330 | }; | |
331 | ||
12e364b9 KC |
332 | /* /sys/devices/platform/visorchipset */ |
333 | static struct platform_device Visorchipset_platform_device = { | |
334 | .name = "visorchipset", | |
335 | .id = -1, | |
19f6634f | 336 | .dev.groups = visorchipset_dev_groups, |
12e364b9 KC |
337 | }; |
338 | ||
339 | /* Function prototypes */ | |
98d7b594 BR |
340 | static void controlvm_respond(struct controlvm_message_header *msgHdr, |
341 | int response); | |
342 | static void controlvm_respond_chipset_init( | |
343 | struct controlvm_message_header *msgHdr, int response, | |
344 | enum ultra_chipset_feature features); | |
345 | static void controlvm_respond_physdev_changestate( | |
346 | struct controlvm_message_header *msgHdr, int response, | |
347 | struct spar_segment_state state); | |
12e364b9 | 348 | |
d746cb55 VB |
349 | static ssize_t toolaction_show(struct device *dev, |
350 | struct device_attribute *attr, | |
351 | char *buf) | |
19f6634f | 352 | { |
66e24b76 | 353 | u8 toolAction; |
19f6634f BR |
354 | |
355 | visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
356 | offsetof(struct spar_controlvm_channel_protocol, |
357 | tool_action), &toolAction, sizeof(u8)); | |
19f6634f BR |
358 | return scnprintf(buf, PAGE_SIZE, "%u\n", toolAction); |
359 | } | |
360 | ||
d746cb55 VB |
361 | static ssize_t toolaction_store(struct device *dev, |
362 | struct device_attribute *attr, | |
363 | const char *buf, size_t count) | |
19f6634f | 364 | { |
66e24b76 BR |
365 | u8 toolAction; |
366 | int ret; | |
19f6634f | 367 | |
66e24b76 BR |
368 | if (kstrtou8(buf, 10, &toolAction) != 0) |
369 | return -EINVAL; | |
370 | ||
371 | ret = visorchannel_write(ControlVm_channel, | |
d19642f6 | 372 | offsetof(struct spar_controlvm_channel_protocol, tool_action), |
66e24b76 BR |
373 | &toolAction, sizeof(u8)); |
374 | ||
375 | if (ret) | |
376 | return ret; | |
e22a4a0f | 377 | return count; |
19f6634f BR |
378 | } |
379 | ||
d746cb55 VB |
380 | static ssize_t boottotool_show(struct device *dev, |
381 | struct device_attribute *attr, | |
382 | char *buf) | |
54b31229 | 383 | { |
755e2ecc | 384 | struct efi_spar_indication efiSparIndication; |
54b31229 BR |
385 | |
386 | visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
387 | offsetof(struct spar_controlvm_channel_protocol, |
388 | efi_spar_ind), &efiSparIndication, | |
755e2ecc | 389 | sizeof(struct efi_spar_indication)); |
54b31229 | 390 | return scnprintf(buf, PAGE_SIZE, "%u\n", |
2450301a | 391 | efiSparIndication.boot_to_tool); |
54b31229 BR |
392 | } |
393 | ||
d746cb55 VB |
394 | static ssize_t boottotool_store(struct device *dev, |
395 | struct device_attribute *attr, | |
396 | const char *buf, size_t count) | |
54b31229 | 397 | { |
66e24b76 | 398 | int val, ret; |
755e2ecc | 399 | struct efi_spar_indication efiSparIndication; |
54b31229 | 400 | |
66e24b76 BR |
401 | if (kstrtoint(buf, 10, &val) != 0) |
402 | return -EINVAL; | |
403 | ||
2450301a | 404 | efiSparIndication.boot_to_tool = val; |
66e24b76 | 405 | ret = visorchannel_write(ControlVm_channel, |
d19642f6 BR |
406 | offsetof(struct spar_controlvm_channel_protocol, |
407 | efi_spar_ind), | |
54b31229 | 408 | &(efiSparIndication), |
755e2ecc | 409 | sizeof(struct efi_spar_indication)); |
66e24b76 BR |
410 | |
411 | if (ret) | |
412 | return ret; | |
e22a4a0f | 413 | return count; |
54b31229 | 414 | } |
422af17c BR |
415 | |
416 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, | |
417 | char *buf) | |
418 | { | |
419 | u32 error; | |
420 | ||
421 | visorchannel_read(ControlVm_channel, offsetof( | |
d19642f6 | 422 | struct spar_controlvm_channel_protocol, installation_error), |
422af17c BR |
423 | &error, sizeof(u32)); |
424 | return scnprintf(buf, PAGE_SIZE, "%i\n", error); | |
425 | } | |
426 | ||
427 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, | |
428 | const char *buf, size_t count) | |
429 | { | |
430 | u32 error; | |
66e24b76 | 431 | int ret; |
422af17c | 432 | |
66e24b76 BR |
433 | if (kstrtou32(buf, 10, &error) != 0) |
434 | return -EINVAL; | |
435 | ||
436 | ret = visorchannel_write(ControlVm_channel, | |
d19642f6 BR |
437 | offsetof(struct spar_controlvm_channel_protocol, |
438 | installation_error), | |
66e24b76 BR |
439 | &error, sizeof(u32)); |
440 | if (ret) | |
441 | return ret; | |
e22a4a0f | 442 | return count; |
422af17c BR |
443 | } |
444 | ||
445 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, | |
446 | char *buf) | |
447 | { | |
448 | u32 textId; | |
449 | ||
450 | visorchannel_read(ControlVm_channel, offsetof( | |
d19642f6 | 451 | struct spar_controlvm_channel_protocol, installation_text_id), |
422af17c BR |
452 | &textId, sizeof(u32)); |
453 | return scnprintf(buf, PAGE_SIZE, "%i\n", textId); | |
454 | } | |
455 | ||
456 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, | |
457 | const char *buf, size_t count) | |
458 | { | |
459 | u32 textId; | |
66e24b76 | 460 | int ret; |
422af17c | 461 | |
66e24b76 BR |
462 | if (kstrtou32(buf, 10, &textId) != 0) |
463 | return -EINVAL; | |
464 | ||
465 | ret = visorchannel_write(ControlVm_channel, | |
d19642f6 BR |
466 | offsetof(struct spar_controlvm_channel_protocol, |
467 | installation_text_id), | |
66e24b76 BR |
468 | &textId, sizeof(u32)); |
469 | if (ret) | |
470 | return ret; | |
e22a4a0f | 471 | return count; |
422af17c BR |
472 | } |
473 | ||
474 | ||
475 | static ssize_t remaining_steps_show(struct device *dev, | |
476 | struct device_attribute *attr, char *buf) | |
477 | { | |
478 | u16 remainingSteps; | |
479 | ||
480 | visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
481 | offsetof(struct spar_controlvm_channel_protocol, |
482 | installation_remaining_steps), | |
422af17c BR |
483 | &remainingSteps, |
484 | sizeof(u16)); | |
485 | return scnprintf(buf, PAGE_SIZE, "%hu\n", remainingSteps); | |
486 | } | |
487 | ||
488 | static ssize_t remaining_steps_store(struct device *dev, | |
489 | struct device_attribute *attr, const char *buf, size_t count) | |
490 | { | |
491 | u16 remainingSteps; | |
66e24b76 | 492 | int ret; |
422af17c | 493 | |
66e24b76 BR |
494 | if (kstrtou16(buf, 10, &remainingSteps) != 0) |
495 | return -EINVAL; | |
496 | ||
497 | ret = visorchannel_write(ControlVm_channel, | |
d19642f6 BR |
498 | offsetof(struct spar_controlvm_channel_protocol, |
499 | installation_remaining_steps), | |
66e24b76 BR |
500 | &remainingSteps, sizeof(u16)); |
501 | if (ret) | |
502 | return ret; | |
e22a4a0f | 503 | return count; |
422af17c BR |
504 | } |
505 | ||
12e364b9 KC |
506 | #if 0 |
507 | static void | |
508 | testUnicode(void) | |
509 | { | |
510 | wchar_t unicodeString[] = { 'a', 'b', 'c', 0 }; | |
511 | char s[sizeof(unicodeString) * NLS_MAX_CHARSET_SIZE]; | |
512 | wchar_t unicode2[99]; | |
513 | ||
514 | /* NOTE: Either due to a bug, or feature I don't understand, the | |
515 | * kernel utf8_mbstowcs() and utf_wcstombs() do NOT copy the | |
516 | * trailed NUL byte!! REALLY!!!!! Arrrrgggghhhhh | |
517 | */ | |
518 | ||
519 | LOGINF("sizeof(wchar_t) = %d", sizeof(wchar_t)); | |
520 | LOGINF("utf8_wcstombs=%d", | |
521 | chrs = utf8_wcstombs(s, unicodeString, sizeof(s))); | |
522 | if (chrs >= 0) | |
523 | s[chrs] = '\0'; /* GRRRRRRRR */ | |
524 | LOGINF("s='%s'", s); | |
525 | LOGINF("utf8_mbstowcs=%d", chrs = utf8_mbstowcs(unicode2, s, 100)); | |
526 | if (chrs >= 0) | |
527 | unicode2[chrs] = 0; /* GRRRRRRRR */ | |
528 | if (memcmp(unicodeString, unicode2, sizeof(unicodeString)) == 0) | |
529 | LOGINF("strings match... good"); | |
530 | else | |
531 | LOGINF("strings did not match!!"); | |
532 | } | |
533 | #endif | |
534 | ||
535 | static void | |
536 | busInfo_clear(void *v) | |
537 | { | |
33192fa1 | 538 | struct visorchipset_bus_info *p = (struct visorchipset_bus_info *) (v); |
12e364b9 | 539 | |
33192fa1 BR |
540 | if (p->proc_object) { |
541 | visor_proc_DestroyObject(p->proc_object); | |
542 | p->proc_object = NULL; | |
12e364b9 KC |
543 | } |
544 | kfree(p->name); | |
545 | p->name = NULL; | |
546 | ||
547 | kfree(p->description); | |
548 | p->description = NULL; | |
549 | ||
550 | p->state.created = 0; | |
33192fa1 | 551 | memset(p, 0, sizeof(struct visorchipset_bus_info)); |
12e364b9 KC |
552 | } |
553 | ||
554 | static void | |
555 | devInfo_clear(void *v) | |
556 | { | |
246e0cd0 BR |
557 | struct visorchipset_device_info *p = |
558 | (struct visorchipset_device_info *)(v); | |
26eb2c0c | 559 | |
12e364b9 | 560 | p->state.created = 0; |
246e0cd0 | 561 | memset(p, 0, sizeof(struct visorchipset_device_info)); |
12e364b9 KC |
562 | } |
563 | ||
c242233e | 564 | static u8 |
12e364b9 KC |
565 | check_chipset_events(void) |
566 | { | |
567 | int i; | |
c242233e | 568 | u8 send_msg = 1; |
12e364b9 KC |
569 | /* Check events to determine if response should be sent */ |
570 | for (i = 0; i < MAX_CHIPSET_EVENTS; i++) | |
571 | send_msg &= chipset_events[i]; | |
572 | return send_msg; | |
573 | } | |
574 | ||
575 | static void | |
576 | clear_chipset_events(void) | |
577 | { | |
578 | int i; | |
579 | /* Clear chipset_events */ | |
580 | for (i = 0; i < MAX_CHIPSET_EVENTS; i++) | |
581 | chipset_events[i] = 0; | |
582 | } | |
583 | ||
584 | void | |
fe90d892 BR |
585 | visorchipset_register_busdev_server( |
586 | struct visorchipset_busdev_notifiers *notifiers, | |
929aa8ae | 587 | struct visorchipset_busdev_responders *responders, |
1e7a59c1 | 588 | struct ultra_vbus_deviceinfo *driver_info) |
12e364b9 | 589 | { |
f2170625 | 590 | down(&NotifierLock); |
12e364b9 KC |
591 | if (notifiers == NULL) { |
592 | memset(&BusDev_Server_Notifiers, 0, | |
593 | sizeof(BusDev_Server_Notifiers)); | |
594 | serverregistered = 0; /* clear flag */ | |
595 | } else { | |
596 | BusDev_Server_Notifiers = *notifiers; | |
597 | serverregistered = 1; /* set flag */ | |
598 | } | |
599 | if (responders) | |
600 | *responders = BusDev_Responders; | |
1e7a59c1 BR |
601 | if (driver_info) |
602 | bus_device_info_init(driver_info, "chipset", "visorchipset", | |
836bee9e | 603 | VERSION, NULL); |
12e364b9 | 604 | |
f2170625 | 605 | up(&NotifierLock); |
12e364b9 KC |
606 | } |
607 | EXPORT_SYMBOL_GPL(visorchipset_register_busdev_server); | |
608 | ||
609 | void | |
fe90d892 BR |
610 | visorchipset_register_busdev_client( |
611 | struct visorchipset_busdev_notifiers *notifiers, | |
929aa8ae | 612 | struct visorchipset_busdev_responders *responders, |
43fce019 | 613 | struct ultra_vbus_deviceinfo *driver_info) |
12e364b9 | 614 | { |
f2170625 | 615 | down(&NotifierLock); |
12e364b9 KC |
616 | if (notifiers == NULL) { |
617 | memset(&BusDev_Client_Notifiers, 0, | |
618 | sizeof(BusDev_Client_Notifiers)); | |
619 | clientregistered = 0; /* clear flag */ | |
620 | } else { | |
621 | BusDev_Client_Notifiers = *notifiers; | |
622 | clientregistered = 1; /* set flag */ | |
623 | } | |
624 | if (responders) | |
625 | *responders = BusDev_Responders; | |
43fce019 BR |
626 | if (driver_info) |
627 | bus_device_info_init(driver_info, "chipset(bolts)", | |
628 | "visorchipset", VERSION, NULL); | |
f2170625 | 629 | up(&NotifierLock); |
12e364b9 KC |
630 | } |
631 | EXPORT_SYMBOL_GPL(visorchipset_register_busdev_client); | |
632 | ||
633 | static void | |
634 | cleanup_controlvm_structures(void) | |
635 | { | |
33192fa1 | 636 | struct visorchipset_bus_info *bi, *tmp_bi; |
246e0cd0 | 637 | struct visorchipset_device_info *di, *tmp_di; |
12e364b9 | 638 | |
e6b1ea77 | 639 | list_for_each_entry_safe(bi, tmp_bi, &BusInfoList, entry) { |
12e364b9 KC |
640 | busInfo_clear(bi); |
641 | list_del(&bi->entry); | |
642 | kfree(bi); | |
643 | } | |
644 | ||
e6b1ea77 | 645 | list_for_each_entry_safe(di, tmp_di, &DevInfoList, entry) { |
12e364b9 KC |
646 | devInfo_clear(di); |
647 | list_del(&di->entry); | |
648 | kfree(di); | |
649 | } | |
650 | } | |
651 | ||
652 | static void | |
3ab47701 | 653 | chipset_init(struct controlvm_message *inmsg) |
12e364b9 KC |
654 | { |
655 | static int chipset_inited; | |
b9b141e8 | 656 | enum ultra_chipset_feature features = 0; |
12e364b9 KC |
657 | int rc = CONTROLVM_RESP_SUCCESS; |
658 | ||
659 | POSTCODE_LINUX_2(CHIPSET_INIT_ENTRY_PC, POSTCODE_SEVERITY_INFO); | |
660 | if (chipset_inited) { | |
22ad57ba KC |
661 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
662 | goto Away; | |
12e364b9 KC |
663 | } |
664 | chipset_inited = 1; | |
665 | POSTCODE_LINUX_2(CHIPSET_INIT_EXIT_PC, POSTCODE_SEVERITY_INFO); | |
666 | ||
667 | /* Set features to indicate we support parahotplug (if Command | |
668 | * also supports it). */ | |
669 | features = | |
2ea5117b | 670 | inmsg->cmd.init_chipset. |
12e364b9 KC |
671 | features & ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG; |
672 | ||
673 | /* Set the "reply" bit so Command knows this is a | |
674 | * features-aware driver. */ | |
675 | features |= ULTRA_CHIPSET_FEATURE_REPLY; | |
676 | ||
677 | Away: | |
678 | if (rc < 0) | |
679 | cleanup_controlvm_structures(); | |
98d7b594 | 680 | if (inmsg->hdr.flags.response_expected) |
12e364b9 KC |
681 | controlvm_respond_chipset_init(&inmsg->hdr, rc, features); |
682 | } | |
683 | ||
684 | static void | |
3ab47701 | 685 | controlvm_init_response(struct controlvm_message *msg, |
98d7b594 | 686 | struct controlvm_message_header *msgHdr, int response) |
12e364b9 | 687 | { |
3ab47701 | 688 | memset(msg, 0, sizeof(struct controlvm_message)); |
98d7b594 BR |
689 | memcpy(&msg->hdr, msgHdr, sizeof(struct controlvm_message_header)); |
690 | msg->hdr.payload_bytes = 0; | |
691 | msg->hdr.payload_vm_offset = 0; | |
692 | msg->hdr.payload_max_bytes = 0; | |
12e364b9 | 693 | if (response < 0) { |
98d7b594 BR |
694 | msg->hdr.flags.failed = 1; |
695 | msg->hdr.completion_status = (u32) (-response); | |
12e364b9 KC |
696 | } |
697 | } | |
698 | ||
699 | static void | |
98d7b594 | 700 | controlvm_respond(struct controlvm_message_header *msgHdr, int response) |
12e364b9 | 701 | { |
3ab47701 | 702 | struct controlvm_message outmsg; |
26eb2c0c | 703 | |
12e364b9 KC |
704 | controlvm_init_response(&outmsg, msgHdr, response); |
705 | /* For DiagPool channel DEVICE_CHANGESTATE, we need to send | |
706 | * back the deviceChangeState structure in the packet. */ | |
98d7b594 | 707 | if (msgHdr->id == CONTROLVM_DEVICE_CHANGESTATE |
2ea5117b | 708 | && g_DeviceChangeStatePacket.device_change_state.bus_no == |
12e364b9 | 709 | g_diagpoolBusNo |
2ea5117b | 710 | && g_DeviceChangeStatePacket.device_change_state.dev_no == |
12e364b9 KC |
711 | g_diagpoolDevNo) |
712 | outmsg.cmd = g_DeviceChangeStatePacket; | |
2098dbd1 | 713 | if (outmsg.hdr.flags.test_message == 1) |
12e364b9 | 714 | return; |
2098dbd1 | 715 | |
12e364b9 KC |
716 | if (!visorchannel_signalinsert(ControlVm_channel, |
717 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { | |
12e364b9 KC |
718 | return; |
719 | } | |
720 | } | |
721 | ||
722 | static void | |
98d7b594 BR |
723 | controlvm_respond_chipset_init(struct controlvm_message_header *msgHdr, |
724 | int response, | |
b9b141e8 | 725 | enum ultra_chipset_feature features) |
12e364b9 | 726 | { |
3ab47701 | 727 | struct controlvm_message outmsg; |
26eb2c0c | 728 | |
12e364b9 | 729 | controlvm_init_response(&outmsg, msgHdr, response); |
2ea5117b | 730 | outmsg.cmd.init_chipset.features = features; |
12e364b9 KC |
731 | if (!visorchannel_signalinsert(ControlVm_channel, |
732 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { | |
12e364b9 KC |
733 | return; |
734 | } | |
735 | } | |
736 | ||
98d7b594 BR |
737 | static void controlvm_respond_physdev_changestate( |
738 | struct controlvm_message_header *msgHdr, int response, | |
739 | struct spar_segment_state state) | |
12e364b9 | 740 | { |
3ab47701 | 741 | struct controlvm_message outmsg; |
26eb2c0c | 742 | |
12e364b9 | 743 | controlvm_init_response(&outmsg, msgHdr, response); |
2ea5117b BR |
744 | outmsg.cmd.device_change_state.state = state; |
745 | outmsg.cmd.device_change_state.flags.phys_device = 1; | |
12e364b9 KC |
746 | if (!visorchannel_signalinsert(ControlVm_channel, |
747 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { | |
12e364b9 KC |
748 | return; |
749 | } | |
750 | } | |
751 | ||
752 | void | |
2c683cde BR |
753 | visorchipset_save_message(struct controlvm_message *msg, |
754 | enum crash_obj_type type) | |
12e364b9 | 755 | { |
b3c55b13 | 756 | u32 localSavedCrashMsgOffset; |
b06bdf7d | 757 | u16 localSavedCrashMsgCount; |
12e364b9 KC |
758 | |
759 | /* get saved message count */ | |
760 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
761 | offsetof(struct spar_controlvm_channel_protocol, |
762 | saved_crash_message_count), | |
b06bdf7d | 763 | &localSavedCrashMsgCount, sizeof(u16)) < 0) { |
12e364b9 KC |
764 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
765 | POSTCODE_SEVERITY_ERR); | |
766 | return; | |
767 | } | |
768 | ||
769 | if (localSavedCrashMsgCount != CONTROLVM_CRASHMSG_MAX) { | |
12e364b9 KC |
770 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, |
771 | localSavedCrashMsgCount, | |
772 | POSTCODE_SEVERITY_ERR); | |
773 | return; | |
774 | } | |
775 | ||
776 | /* get saved crash message offset */ | |
777 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
778 | offsetof(struct spar_controlvm_channel_protocol, |
779 | saved_crash_message_offset), | |
b3c55b13 | 780 | &localSavedCrashMsgOffset, sizeof(u32)) < 0) { |
12e364b9 KC |
781 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
782 | POSTCODE_SEVERITY_ERR); | |
783 | return; | |
784 | } | |
785 | ||
2c683cde | 786 | if (type == CRASH_BUS) { |
12e364b9 KC |
787 | if (visorchannel_write(ControlVm_channel, |
788 | localSavedCrashMsgOffset, | |
3ab47701 BR |
789 | msg, |
790 | sizeof(struct controlvm_message)) < 0) { | |
12e364b9 KC |
791 | POSTCODE_LINUX_2(SAVE_MSG_BUS_FAILURE_PC, |
792 | POSTCODE_SEVERITY_ERR); | |
793 | return; | |
794 | } | |
795 | } else { | |
796 | if (visorchannel_write(ControlVm_channel, | |
797 | localSavedCrashMsgOffset + | |
3ab47701 BR |
798 | sizeof(struct controlvm_message), msg, |
799 | sizeof(struct controlvm_message)) < 0) { | |
12e364b9 KC |
800 | POSTCODE_LINUX_2(SAVE_MSG_DEV_FAILURE_PC, |
801 | POSTCODE_SEVERITY_ERR); | |
802 | return; | |
803 | } | |
804 | } | |
805 | } | |
806 | EXPORT_SYMBOL_GPL(visorchipset_save_message); | |
807 | ||
808 | static void | |
53bebb13 | 809 | bus_responder(enum controlvm_id cmdId, ulong busNo, int response) |
12e364b9 | 810 | { |
33192fa1 | 811 | struct visorchipset_bus_info *p = NULL; |
12e364b9 KC |
812 | BOOL need_clear = FALSE; |
813 | ||
814 | p = findbus(&BusInfoList, busNo); | |
0aca7844 | 815 | if (!p) |
12e364b9 | 816 | return; |
0aca7844 | 817 | |
12e364b9 KC |
818 | if (response < 0) { |
819 | if ((cmdId == CONTROLVM_BUS_CREATE) && | |
820 | (response != (-CONTROLVM_RESP_ERROR_ALREADY_DONE))) | |
821 | /* undo the row we just created... */ | |
822 | delbusdevices(&DevInfoList, busNo); | |
823 | } else { | |
824 | if (cmdId == CONTROLVM_BUS_CREATE) | |
825 | p->state.created = 1; | |
826 | if (cmdId == CONTROLVM_BUS_DESTROY) | |
827 | need_clear = TRUE; | |
828 | } | |
829 | ||
0aca7844 | 830 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) |
12e364b9 | 831 | return; /* no controlvm response needed */ |
0aca7844 | 832 | if (p->pending_msg_hdr.id != (u32) cmdId) |
12e364b9 | 833 | return; |
33192fa1 BR |
834 | controlvm_respond(&p->pending_msg_hdr, response); |
835 | p->pending_msg_hdr.id = CONTROLVM_INVALID; | |
12e364b9 KC |
836 | if (need_clear) { |
837 | busInfo_clear(p); | |
838 | delbusdevices(&DevInfoList, busNo); | |
839 | } | |
840 | } | |
841 | ||
842 | static void | |
53bebb13 | 843 | device_changestate_responder(enum controlvm_id cmdId, |
12e364b9 | 844 | ulong busNo, ulong devNo, int response, |
3f833b54 | 845 | struct spar_segment_state responseState) |
12e364b9 | 846 | { |
246e0cd0 | 847 | struct visorchipset_device_info *p = NULL; |
3ab47701 | 848 | struct controlvm_message outmsg; |
12e364b9 | 849 | |
12e364b9 | 850 | p = finddevice(&DevInfoList, busNo, devNo); |
0aca7844 | 851 | if (!p) |
12e364b9 | 852 | return; |
0aca7844 | 853 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) |
12e364b9 | 854 | return; /* no controlvm response needed */ |
0aca7844 | 855 | if (p->pending_msg_hdr.id != cmdId) |
12e364b9 | 856 | return; |
12e364b9 | 857 | |
246e0cd0 | 858 | controlvm_init_response(&outmsg, &p->pending_msg_hdr, response); |
12e364b9 | 859 | |
2ea5117b BR |
860 | outmsg.cmd.device_change_state.bus_no = busNo; |
861 | outmsg.cmd.device_change_state.dev_no = devNo; | |
862 | outmsg.cmd.device_change_state.state = responseState; | |
12e364b9 KC |
863 | |
864 | if (!visorchannel_signalinsert(ControlVm_channel, | |
0aca7844 | 865 | CONTROLVM_QUEUE_REQUEST, &outmsg)) |
12e364b9 | 866 | return; |
12e364b9 | 867 | |
246e0cd0 | 868 | p->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 KC |
869 | } |
870 | ||
871 | static void | |
53bebb13 BR |
872 | device_responder(enum controlvm_id cmdId, ulong busNo, ulong devNo, |
873 | int response) | |
12e364b9 | 874 | { |
246e0cd0 | 875 | struct visorchipset_device_info *p = NULL; |
12e364b9 KC |
876 | BOOL need_clear = FALSE; |
877 | ||
878 | p = finddevice(&DevInfoList, busNo, devNo); | |
0aca7844 | 879 | if (!p) |
12e364b9 | 880 | return; |
12e364b9 KC |
881 | if (response >= 0) { |
882 | if (cmdId == CONTROLVM_DEVICE_CREATE) | |
883 | p->state.created = 1; | |
884 | if (cmdId == CONTROLVM_DEVICE_DESTROY) | |
885 | need_clear = TRUE; | |
886 | } | |
887 | ||
0aca7844 | 888 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) |
12e364b9 | 889 | return; /* no controlvm response needed */ |
0aca7844 BR |
890 | |
891 | if (p->pending_msg_hdr.id != (u32) cmdId) | |
12e364b9 | 892 | return; |
0aca7844 | 893 | |
246e0cd0 BR |
894 | controlvm_respond(&p->pending_msg_hdr, response); |
895 | p->pending_msg_hdr.id = CONTROLVM_INVALID; | |
12e364b9 KC |
896 | if (need_clear) |
897 | devInfo_clear(p); | |
898 | } | |
899 | ||
900 | static void | |
b3c55b13 | 901 | bus_epilog(u32 busNo, |
98d7b594 | 902 | u32 cmd, struct controlvm_message_header *msgHdr, |
12e364b9 KC |
903 | int response, BOOL needResponse) |
904 | { | |
905 | BOOL notified = FALSE; | |
906 | ||
33192fa1 | 907 | struct visorchipset_bus_info *pBusInfo = findbus(&BusInfoList, busNo); |
12e364b9 | 908 | |
0aca7844 | 909 | if (!pBusInfo) |
12e364b9 | 910 | return; |
0aca7844 | 911 | |
12e364b9 | 912 | if (needResponse) { |
33192fa1 | 913 | memcpy(&pBusInfo->pending_msg_hdr, msgHdr, |
98d7b594 | 914 | sizeof(struct controlvm_message_header)); |
12e364b9 | 915 | } else |
33192fa1 | 916 | pBusInfo->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 | 917 | |
f2170625 | 918 | down(&NotifierLock); |
12e364b9 KC |
919 | if (response == CONTROLVM_RESP_SUCCESS) { |
920 | switch (cmd) { | |
921 | case CONTROLVM_BUS_CREATE: | |
922 | /* We can't tell from the bus_create | |
923 | * information which of our 2 bus flavors the | |
924 | * devices on this bus will ultimately end up. | |
925 | * FORTUNATELY, it turns out it is harmless to | |
926 | * send the bus_create to both of them. We can | |
927 | * narrow things down a little bit, though, | |
928 | * because we know: - BusDev_Server can handle | |
929 | * either server or client devices | |
930 | * - BusDev_Client can handle ONLY client | |
931 | * devices */ | |
932 | if (BusDev_Server_Notifiers.bus_create) { | |
933 | (*BusDev_Server_Notifiers.bus_create) (busNo); | |
934 | notified = TRUE; | |
935 | } | |
936 | if ((!pBusInfo->flags.server) /*client */ && | |
937 | BusDev_Client_Notifiers.bus_create) { | |
938 | (*BusDev_Client_Notifiers.bus_create) (busNo); | |
939 | notified = TRUE; | |
940 | } | |
941 | break; | |
942 | case CONTROLVM_BUS_DESTROY: | |
943 | if (BusDev_Server_Notifiers.bus_destroy) { | |
944 | (*BusDev_Server_Notifiers.bus_destroy) (busNo); | |
945 | notified = TRUE; | |
946 | } | |
947 | if ((!pBusInfo->flags.server) /*client */ && | |
948 | BusDev_Client_Notifiers.bus_destroy) { | |
949 | (*BusDev_Client_Notifiers.bus_destroy) (busNo); | |
950 | notified = TRUE; | |
951 | } | |
952 | break; | |
953 | } | |
954 | } | |
955 | if (notified) | |
956 | /* The callback function just called above is responsible | |
929aa8ae | 957 | * for calling the appropriate visorchipset_busdev_responders |
12e364b9 KC |
958 | * function, which will call bus_responder() |
959 | */ | |
960 | ; | |
961 | else | |
962 | bus_responder(cmd, busNo, response); | |
f2170625 | 963 | up(&NotifierLock); |
12e364b9 KC |
964 | } |
965 | ||
966 | static void | |
3f833b54 | 967 | device_epilog(u32 busNo, u32 devNo, struct spar_segment_state state, u32 cmd, |
98d7b594 | 968 | struct controlvm_message_header *msgHdr, int response, |
12e364b9 KC |
969 | BOOL needResponse, BOOL for_visorbus) |
970 | { | |
fe90d892 | 971 | struct visorchipset_busdev_notifiers *notifiers = NULL; |
12e364b9 KC |
972 | BOOL notified = FALSE; |
973 | ||
246e0cd0 | 974 | struct visorchipset_device_info *pDevInfo = |
12e364b9 KC |
975 | finddevice(&DevInfoList, busNo, devNo); |
976 | char *envp[] = { | |
977 | "SPARSP_DIAGPOOL_PAUSED_STATE = 1", | |
978 | NULL | |
979 | }; | |
980 | ||
0aca7844 | 981 | if (!pDevInfo) |
12e364b9 | 982 | return; |
0aca7844 | 983 | |
12e364b9 KC |
984 | if (for_visorbus) |
985 | notifiers = &BusDev_Server_Notifiers; | |
986 | else | |
987 | notifiers = &BusDev_Client_Notifiers; | |
988 | if (needResponse) { | |
246e0cd0 | 989 | memcpy(&pDevInfo->pending_msg_hdr, msgHdr, |
98d7b594 | 990 | sizeof(struct controlvm_message_header)); |
12e364b9 | 991 | } else |
246e0cd0 | 992 | pDevInfo->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 | 993 | |
f2170625 | 994 | down(&NotifierLock); |
12e364b9 KC |
995 | if (response >= 0) { |
996 | switch (cmd) { | |
997 | case CONTROLVM_DEVICE_CREATE: | |
998 | if (notifiers->device_create) { | |
999 | (*notifiers->device_create) (busNo, devNo); | |
1000 | notified = TRUE; | |
1001 | } | |
1002 | break; | |
1003 | case CONTROLVM_DEVICE_CHANGESTATE: | |
1004 | /* ServerReady / ServerRunning / SegmentStateRunning */ | |
bd0d2dcc BR |
1005 | if (state.alive == segment_state_running.alive && |
1006 | state.operating == | |
1007 | segment_state_running.operating) { | |
12e364b9 KC |
1008 | if (notifiers->device_resume) { |
1009 | (*notifiers->device_resume) (busNo, | |
1010 | devNo); | |
1011 | notified = TRUE; | |
1012 | } | |
1013 | } | |
1014 | /* ServerNotReady / ServerLost / SegmentStateStandby */ | |
bd0d2dcc | 1015 | else if (state.alive == segment_state_standby.alive && |
3f833b54 | 1016 | state.operating == |
bd0d2dcc | 1017 | segment_state_standby.operating) { |
12e364b9 KC |
1018 | /* technically this is standby case |
1019 | * where server is lost | |
1020 | */ | |
1021 | if (notifiers->device_pause) { | |
1022 | (*notifiers->device_pause) (busNo, | |
1023 | devNo); | |
1024 | notified = TRUE; | |
1025 | } | |
bd0d2dcc | 1026 | } else if (state.alive == segment_state_paused.alive && |
3f833b54 | 1027 | state.operating == |
bd0d2dcc | 1028 | segment_state_paused.operating) { |
12e364b9 KC |
1029 | /* this is lite pause where channel is |
1030 | * still valid just 'pause' of it | |
1031 | */ | |
1032 | if (busNo == g_diagpoolBusNo | |
1033 | && devNo == g_diagpoolDevNo) { | |
12e364b9 KC |
1034 | /* this will trigger the |
1035 | * diag_shutdown.sh script in | |
1036 | * the visorchipset hotplug */ | |
1037 | kobject_uevent_env | |
1038 | (&Visorchipset_platform_device.dev. | |
1039 | kobj, KOBJ_ONLINE, envp); | |
1040 | } | |
1041 | } | |
1042 | break; | |
1043 | case CONTROLVM_DEVICE_DESTROY: | |
1044 | if (notifiers->device_destroy) { | |
1045 | (*notifiers->device_destroy) (busNo, devNo); | |
1046 | notified = TRUE; | |
1047 | } | |
1048 | break; | |
1049 | } | |
1050 | } | |
1051 | if (notified) | |
1052 | /* The callback function just called above is responsible | |
929aa8ae | 1053 | * for calling the appropriate visorchipset_busdev_responders |
12e364b9 KC |
1054 | * function, which will call device_responder() |
1055 | */ | |
1056 | ; | |
1057 | else | |
1058 | device_responder(cmd, busNo, devNo, response); | |
f2170625 | 1059 | up(&NotifierLock); |
12e364b9 KC |
1060 | } |
1061 | ||
1062 | static void | |
3ab47701 | 1063 | bus_create(struct controlvm_message *inmsg) |
12e364b9 | 1064 | { |
2ea5117b BR |
1065 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1066 | ulong busNo = cmd->create_bus.bus_no; | |
12e364b9 | 1067 | int rc = CONTROLVM_RESP_SUCCESS; |
33192fa1 | 1068 | struct visorchipset_bus_info *pBusInfo = NULL; |
12e364b9 KC |
1069 | |
1070 | ||
1071 | pBusInfo = findbus(&BusInfoList, busNo); | |
1072 | if (pBusInfo && (pBusInfo->state.created == 1)) { | |
12e364b9 KC |
1073 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo, |
1074 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1075 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
1076 | goto Away; | |
12e364b9 | 1077 | } |
33192fa1 | 1078 | pBusInfo = kzalloc(sizeof(struct visorchipset_bus_info), GFP_KERNEL); |
12e364b9 | 1079 | if (pBusInfo == NULL) { |
12e364b9 KC |
1080 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo, |
1081 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1082 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
1083 | goto Away; | |
12e364b9 KC |
1084 | } |
1085 | ||
12e364b9 | 1086 | INIT_LIST_HEAD(&pBusInfo->entry); |
33192fa1 BR |
1087 | pBusInfo->bus_no = busNo; |
1088 | pBusInfo->dev_no = cmd->create_bus.dev_count; | |
12e364b9 KC |
1089 | |
1090 | POSTCODE_LINUX_3(BUS_CREATE_ENTRY_PC, busNo, POSTCODE_SEVERITY_INFO); | |
1091 | ||
98d7b594 | 1092 | if (inmsg->hdr.flags.test_message == 1) |
33192fa1 | 1093 | pBusInfo->chan_info.addr_type = ADDRTYPE_LOCALTEST; |
12e364b9 | 1094 | else |
33192fa1 | 1095 | pBusInfo->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL; |
12e364b9 | 1096 | |
98d7b594 | 1097 | pBusInfo->flags.server = inmsg->hdr.flags.server; |
33192fa1 BR |
1098 | pBusInfo->chan_info.channel_addr = cmd->create_bus.channel_addr; |
1099 | pBusInfo->chan_info.n_channel_bytes = cmd->create_bus.channel_bytes; | |
1100 | pBusInfo->chan_info.channel_type_uuid = | |
9b1caee7 | 1101 | cmd->create_bus.bus_data_type_uuid; |
33192fa1 | 1102 | pBusInfo->chan_info.channel_inst_uuid = cmd->create_bus.bus_inst_uuid; |
12e364b9 KC |
1103 | |
1104 | list_add(&pBusInfo->entry, &BusInfoList); | |
1105 | ||
1106 | POSTCODE_LINUX_3(BUS_CREATE_EXIT_PC, busNo, POSTCODE_SEVERITY_INFO); | |
1107 | ||
1108 | Away: | |
1109 | bus_epilog(busNo, CONTROLVM_BUS_CREATE, &inmsg->hdr, | |
98d7b594 | 1110 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1111 | } |
1112 | ||
1113 | static void | |
3ab47701 | 1114 | bus_destroy(struct controlvm_message *inmsg) |
12e364b9 | 1115 | { |
2ea5117b BR |
1116 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1117 | ulong busNo = cmd->destroy_bus.bus_no; | |
33192fa1 | 1118 | struct visorchipset_bus_info *pBusInfo; |
12e364b9 KC |
1119 | int rc = CONTROLVM_RESP_SUCCESS; |
1120 | ||
1121 | pBusInfo = findbus(&BusInfoList, busNo); | |
1122 | if (!pBusInfo) { | |
22ad57ba KC |
1123 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1124 | goto Away; | |
12e364b9 KC |
1125 | } |
1126 | if (pBusInfo->state.created == 0) { | |
22ad57ba KC |
1127 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
1128 | goto Away; | |
12e364b9 KC |
1129 | } |
1130 | ||
1131 | Away: | |
1132 | bus_epilog(busNo, CONTROLVM_BUS_DESTROY, &inmsg->hdr, | |
98d7b594 | 1133 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1134 | } |
1135 | ||
1136 | static void | |
317d9614 BR |
1137 | bus_configure(struct controlvm_message *inmsg, |
1138 | struct parser_context *parser_ctx) | |
12e364b9 | 1139 | { |
2ea5117b BR |
1140 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1141 | ulong busNo = cmd->configure_bus.bus_no; | |
33192fa1 | 1142 | struct visorchipset_bus_info *pBusInfo = NULL; |
12e364b9 KC |
1143 | int rc = CONTROLVM_RESP_SUCCESS; |
1144 | char s[99]; | |
1145 | ||
2ea5117b | 1146 | busNo = cmd->configure_bus.bus_no; |
12e364b9 KC |
1147 | POSTCODE_LINUX_3(BUS_CONFIGURE_ENTRY_PC, busNo, POSTCODE_SEVERITY_INFO); |
1148 | ||
1149 | pBusInfo = findbus(&BusInfoList, busNo); | |
1150 | if (!pBusInfo) { | |
12e364b9 KC |
1151 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo, |
1152 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1153 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1154 | goto Away; | |
12e364b9 KC |
1155 | } |
1156 | if (pBusInfo->state.created == 0) { | |
12e364b9 KC |
1157 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo, |
1158 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1159 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1160 | goto Away; | |
12e364b9 KC |
1161 | } |
1162 | /* TBD - add this check to other commands also... */ | |
33192fa1 | 1163 | if (pBusInfo->pending_msg_hdr.id != CONTROLVM_INVALID) { |
12e364b9 KC |
1164 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo, |
1165 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1166 | rc = -CONTROLVM_RESP_ERROR_MESSAGE_ID_INVALID_FOR_CLIENT; |
1167 | goto Away; | |
12e364b9 KC |
1168 | } |
1169 | ||
33192fa1 BR |
1170 | pBusInfo->partition_handle = cmd->configure_bus.guest_handle; |
1171 | pBusInfo->partition_uuid = parser_id_get(parser_ctx); | |
12e364b9 KC |
1172 | parser_param_start(parser_ctx, PARSERSTRING_NAME); |
1173 | pBusInfo->name = parser_string_get(parser_ctx); | |
1174 | ||
33192fa1 | 1175 | visorchannel_uuid_id(&pBusInfo->partition_uuid, s); |
12e364b9 KC |
1176 | POSTCODE_LINUX_3(BUS_CONFIGURE_EXIT_PC, busNo, POSTCODE_SEVERITY_INFO); |
1177 | Away: | |
1178 | bus_epilog(busNo, CONTROLVM_BUS_CONFIGURE, &inmsg->hdr, | |
98d7b594 | 1179 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1180 | } |
1181 | ||
1182 | static void | |
3ab47701 | 1183 | my_device_create(struct controlvm_message *inmsg) |
12e364b9 | 1184 | { |
2ea5117b | 1185 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
f91b9262 BR |
1186 | ulong busNo = cmd->create_device.bus_no; |
1187 | ulong devNo = cmd->create_device.dev_no; | |
246e0cd0 | 1188 | struct visorchipset_device_info *pDevInfo = NULL; |
33192fa1 | 1189 | struct visorchipset_bus_info *pBusInfo = NULL; |
12e364b9 KC |
1190 | int rc = CONTROLVM_RESP_SUCCESS; |
1191 | ||
1192 | pDevInfo = finddevice(&DevInfoList, busNo, devNo); | |
1193 | if (pDevInfo && (pDevInfo->state.created == 1)) { | |
12e364b9 KC |
1194 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, |
1195 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1196 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
1197 | goto Away; | |
12e364b9 KC |
1198 | } |
1199 | pBusInfo = findbus(&BusInfoList, busNo); | |
1200 | if (!pBusInfo) { | |
12e364b9 KC |
1201 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, |
1202 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1203 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1204 | goto Away; | |
12e364b9 KC |
1205 | } |
1206 | if (pBusInfo->state.created == 0) { | |
12e364b9 KC |
1207 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, |
1208 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1209 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1210 | goto Away; | |
12e364b9 | 1211 | } |
246e0cd0 | 1212 | pDevInfo = kzalloc(sizeof(struct visorchipset_device_info), GFP_KERNEL); |
12e364b9 | 1213 | if (pDevInfo == NULL) { |
12e364b9 KC |
1214 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, |
1215 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1216 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
1217 | goto Away; | |
12e364b9 | 1218 | } |
97a84f12 | 1219 | |
12e364b9 | 1220 | INIT_LIST_HEAD(&pDevInfo->entry); |
246e0cd0 BR |
1221 | pDevInfo->bus_no = busNo; |
1222 | pDevInfo->dev_no = devNo; | |
1223 | pDevInfo->dev_inst_uuid = cmd->create_device.dev_inst_uuid; | |
12e364b9 KC |
1224 | POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC, devNo, busNo, |
1225 | POSTCODE_SEVERITY_INFO); | |
1226 | ||
98d7b594 | 1227 | if (inmsg->hdr.flags.test_message == 1) |
246e0cd0 | 1228 | pDevInfo->chan_info.addr_type = ADDRTYPE_LOCALTEST; |
12e364b9 | 1229 | else |
246e0cd0 BR |
1230 | pDevInfo->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL; |
1231 | pDevInfo->chan_info.channel_addr = cmd->create_device.channel_addr; | |
1232 | pDevInfo->chan_info.n_channel_bytes = cmd->create_device.channel_bytes; | |
1233 | pDevInfo->chan_info.channel_type_uuid = | |
9b1caee7 | 1234 | cmd->create_device.data_type_uuid; |
246e0cd0 | 1235 | pDevInfo->chan_info.intr = cmd->create_device.intr; |
12e364b9 KC |
1236 | list_add(&pDevInfo->entry, &DevInfoList); |
1237 | POSTCODE_LINUX_4(DEVICE_CREATE_EXIT_PC, devNo, busNo, | |
1238 | POSTCODE_SEVERITY_INFO); | |
1239 | Away: | |
1240 | /* get the bus and devNo for DiagPool channel */ | |
930a021f SM |
1241 | if (pDevInfo && |
1242 | is_diagpool_channel(pDevInfo->chan_info.channel_type_uuid)) { | |
12e364b9 KC |
1243 | g_diagpoolBusNo = busNo; |
1244 | g_diagpoolDevNo = devNo; | |
12e364b9 | 1245 | } |
bd0d2dcc | 1246 | device_epilog(busNo, devNo, segment_state_running, |
12e364b9 | 1247 | CONTROLVM_DEVICE_CREATE, &inmsg->hdr, rc, |
98d7b594 | 1248 | inmsg->hdr.flags.response_expected == 1, |
246e0cd0 | 1249 | FOR_VISORBUS(pDevInfo->chan_info.channel_type_uuid)); |
12e364b9 KC |
1250 | } |
1251 | ||
1252 | static void | |
3ab47701 | 1253 | my_device_changestate(struct controlvm_message *inmsg) |
12e364b9 | 1254 | { |
2ea5117b BR |
1255 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1256 | ulong busNo = cmd->device_change_state.bus_no; | |
1257 | ulong devNo = cmd->device_change_state.dev_no; | |
1258 | struct spar_segment_state state = cmd->device_change_state.state; | |
246e0cd0 | 1259 | struct visorchipset_device_info *pDevInfo = NULL; |
12e364b9 KC |
1260 | int rc = CONTROLVM_RESP_SUCCESS; |
1261 | ||
1262 | pDevInfo = finddevice(&DevInfoList, busNo, devNo); | |
1263 | if (!pDevInfo) { | |
12e364b9 KC |
1264 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, devNo, busNo, |
1265 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1266 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
1267 | goto Away; | |
12e364b9 KC |
1268 | } |
1269 | if (pDevInfo->state.created == 0) { | |
12e364b9 KC |
1270 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, devNo, busNo, |
1271 | POSTCODE_SEVERITY_ERR); | |
22ad57ba | 1272 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
12e364b9 KC |
1273 | } |
1274 | Away: | |
1275 | if ((rc >= CONTROLVM_RESP_SUCCESS) && pDevInfo) | |
1276 | device_epilog(busNo, devNo, state, CONTROLVM_DEVICE_CHANGESTATE, | |
1277 | &inmsg->hdr, rc, | |
98d7b594 | 1278 | inmsg->hdr.flags.response_expected == 1, |
9b1caee7 | 1279 | FOR_VISORBUS( |
246e0cd0 | 1280 | pDevInfo->chan_info.channel_type_uuid)); |
12e364b9 KC |
1281 | } |
1282 | ||
1283 | static void | |
3ab47701 | 1284 | my_device_destroy(struct controlvm_message *inmsg) |
12e364b9 | 1285 | { |
2ea5117b BR |
1286 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1287 | ulong busNo = cmd->destroy_device.bus_no; | |
1288 | ulong devNo = cmd->destroy_device.dev_no; | |
246e0cd0 | 1289 | struct visorchipset_device_info *pDevInfo = NULL; |
12e364b9 KC |
1290 | int rc = CONTROLVM_RESP_SUCCESS; |
1291 | ||
1292 | pDevInfo = finddevice(&DevInfoList, busNo, devNo); | |
1293 | if (!pDevInfo) { | |
22ad57ba KC |
1294 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
1295 | goto Away; | |
12e364b9 KC |
1296 | } |
1297 | if (pDevInfo->state.created == 0) { | |
22ad57ba | 1298 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
12e364b9 KC |
1299 | } |
1300 | ||
1301 | Away: | |
1302 | if ((rc >= CONTROLVM_RESP_SUCCESS) && pDevInfo) | |
bd0d2dcc | 1303 | device_epilog(busNo, devNo, segment_state_running, |
12e364b9 | 1304 | CONTROLVM_DEVICE_DESTROY, &inmsg->hdr, rc, |
98d7b594 | 1305 | inmsg->hdr.flags.response_expected == 1, |
9b1caee7 | 1306 | FOR_VISORBUS( |
246e0cd0 | 1307 | pDevInfo->chan_info.channel_type_uuid)); |
12e364b9 KC |
1308 | } |
1309 | ||
1310 | /* When provided with the physical address of the controlvm channel | |
1311 | * (phys_addr), the offset to the payload area we need to manage | |
1312 | * (offset), and the size of this payload area (bytes), fills in the | |
84b11dfd | 1313 | * controlvm_payload_info struct. Returns TRUE for success or FALSE |
12e364b9 KC |
1314 | * for failure. |
1315 | */ | |
1316 | static int | |
5fc0229a | 1317 | initialize_controlvm_payload_info(HOSTADDRESS phys_addr, u64 offset, u32 bytes, |
84b11dfd | 1318 | struct controlvm_payload_info *info) |
12e364b9 | 1319 | { |
c242233e | 1320 | u8 __iomem *payload = NULL; |
12e364b9 KC |
1321 | int rc = CONTROLVM_RESP_SUCCESS; |
1322 | ||
1323 | if (info == NULL) { | |
22ad57ba KC |
1324 | rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
1325 | goto Away; | |
12e364b9 | 1326 | } |
84b11dfd | 1327 | memset(info, 0, sizeof(struct controlvm_payload_info)); |
12e364b9 | 1328 | if ((offset == 0) || (bytes == 0)) { |
22ad57ba KC |
1329 | rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
1330 | goto Away; | |
12e364b9 KC |
1331 | } |
1332 | payload = ioremap_cache(phys_addr + offset, bytes); | |
1333 | if (payload == NULL) { | |
22ad57ba KC |
1334 | rc = -CONTROLVM_RESP_ERROR_IOREMAP_FAILED; |
1335 | goto Away; | |
12e364b9 KC |
1336 | } |
1337 | ||
1338 | info->offset = offset; | |
1339 | info->bytes = bytes; | |
1340 | info->ptr = payload; | |
12e364b9 KC |
1341 | |
1342 | Away: | |
1343 | if (rc < 0) { | |
1344 | if (payload != NULL) { | |
1345 | iounmap(payload); | |
1346 | payload = NULL; | |
1347 | } | |
1348 | } | |
1349 | return rc; | |
1350 | } | |
1351 | ||
1352 | static void | |
84b11dfd | 1353 | destroy_controlvm_payload_info(struct controlvm_payload_info *info) |
12e364b9 KC |
1354 | { |
1355 | if (info->ptr != NULL) { | |
1356 | iounmap(info->ptr); | |
1357 | info->ptr = NULL; | |
1358 | } | |
84b11dfd | 1359 | memset(info, 0, sizeof(struct controlvm_payload_info)); |
12e364b9 KC |
1360 | } |
1361 | ||
1362 | static void | |
1363 | initialize_controlvm_payload(void) | |
1364 | { | |
1365 | HOSTADDRESS phys_addr = visorchannel_get_physaddr(ControlVm_channel); | |
5fc0229a | 1366 | u64 payloadOffset = 0; |
b3c55b13 | 1367 | u32 payloadBytes = 0; |
26eb2c0c | 1368 | |
12e364b9 | 1369 | if (visorchannel_read(ControlVm_channel, |
d19642f6 BR |
1370 | offsetof(struct spar_controlvm_channel_protocol, |
1371 | request_payload_offset), | |
12e364b9 | 1372 | &payloadOffset, sizeof(payloadOffset)) < 0) { |
12e364b9 KC |
1373 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, |
1374 | POSTCODE_SEVERITY_ERR); | |
1375 | return; | |
1376 | } | |
1377 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
1378 | offsetof(struct spar_controlvm_channel_protocol, |
1379 | request_payload_bytes), | |
12e364b9 | 1380 | &payloadBytes, sizeof(payloadBytes)) < 0) { |
12e364b9 KC |
1381 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, |
1382 | POSTCODE_SEVERITY_ERR); | |
1383 | return; | |
1384 | } | |
1385 | initialize_controlvm_payload_info(phys_addr, | |
1386 | payloadOffset, payloadBytes, | |
1387 | &ControlVm_payload_info); | |
1388 | } | |
1389 | ||
1390 | /* Send ACTION=online for DEVPATH=/sys/devices/platform/visorchipset. | |
1391 | * Returns CONTROLVM_RESP_xxx code. | |
1392 | */ | |
1393 | int | |
1394 | visorchipset_chipset_ready(void) | |
1395 | { | |
1396 | kobject_uevent(&Visorchipset_platform_device.dev.kobj, KOBJ_ONLINE); | |
1397 | return CONTROLVM_RESP_SUCCESS; | |
1398 | } | |
1399 | EXPORT_SYMBOL_GPL(visorchipset_chipset_ready); | |
1400 | ||
1401 | int | |
1402 | visorchipset_chipset_selftest(void) | |
1403 | { | |
1404 | char env_selftest[20]; | |
1405 | char *envp[] = { env_selftest, NULL }; | |
26eb2c0c | 1406 | |
12e364b9 KC |
1407 | sprintf(env_selftest, "SPARSP_SELFTEST=%d", 1); |
1408 | kobject_uevent_env(&Visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, | |
1409 | envp); | |
1410 | return CONTROLVM_RESP_SUCCESS; | |
1411 | } | |
1412 | EXPORT_SYMBOL_GPL(visorchipset_chipset_selftest); | |
1413 | ||
1414 | /* Send ACTION=offline for DEVPATH=/sys/devices/platform/visorchipset. | |
1415 | * Returns CONTROLVM_RESP_xxx code. | |
1416 | */ | |
1417 | int | |
1418 | visorchipset_chipset_notready(void) | |
1419 | { | |
1420 | kobject_uevent(&Visorchipset_platform_device.dev.kobj, KOBJ_OFFLINE); | |
1421 | return CONTROLVM_RESP_SUCCESS; | |
1422 | } | |
1423 | EXPORT_SYMBOL_GPL(visorchipset_chipset_notready); | |
1424 | ||
1425 | static void | |
98d7b594 | 1426 | chipset_ready(struct controlvm_message_header *msgHdr) |
12e364b9 KC |
1427 | { |
1428 | int rc = visorchipset_chipset_ready(); | |
26eb2c0c | 1429 | |
12e364b9 KC |
1430 | if (rc != CONTROLVM_RESP_SUCCESS) |
1431 | rc = -rc; | |
98d7b594 | 1432 | if (msgHdr->flags.response_expected && !visorchipset_holdchipsetready) |
12e364b9 | 1433 | controlvm_respond(msgHdr, rc); |
98d7b594 | 1434 | if (msgHdr->flags.response_expected && visorchipset_holdchipsetready) { |
12e364b9 KC |
1435 | /* Send CHIPSET_READY response when all modules have been loaded |
1436 | * and disks mounted for the partition | |
1437 | */ | |
1438 | g_ChipSetMsgHdr = *msgHdr; | |
12e364b9 KC |
1439 | } |
1440 | } | |
1441 | ||
1442 | static void | |
98d7b594 | 1443 | chipset_selftest(struct controlvm_message_header *msgHdr) |
12e364b9 KC |
1444 | { |
1445 | int rc = visorchipset_chipset_selftest(); | |
26eb2c0c | 1446 | |
12e364b9 KC |
1447 | if (rc != CONTROLVM_RESP_SUCCESS) |
1448 | rc = -rc; | |
98d7b594 | 1449 | if (msgHdr->flags.response_expected) |
12e364b9 KC |
1450 | controlvm_respond(msgHdr, rc); |
1451 | } | |
1452 | ||
1453 | static void | |
98d7b594 | 1454 | chipset_notready(struct controlvm_message_header *msgHdr) |
12e364b9 KC |
1455 | { |
1456 | int rc = visorchipset_chipset_notready(); | |
26eb2c0c | 1457 | |
12e364b9 KC |
1458 | if (rc != CONTROLVM_RESP_SUCCESS) |
1459 | rc = -rc; | |
98d7b594 | 1460 | if (msgHdr->flags.response_expected) |
12e364b9 KC |
1461 | controlvm_respond(msgHdr, rc); |
1462 | } | |
1463 | ||
1464 | /* This is your "one-stop" shop for grabbing the next message from the | |
1465 | * CONTROLVM_QUEUE_EVENT queue in the controlvm channel. | |
1466 | */ | |
1467 | static BOOL | |
3ab47701 | 1468 | read_controlvm_event(struct controlvm_message *msg) |
12e364b9 KC |
1469 | { |
1470 | if (visorchannel_signalremove(ControlVm_channel, | |
1471 | CONTROLVM_QUEUE_EVENT, msg)) { | |
1472 | /* got a message */ | |
0aca7844 | 1473 | if (msg->hdr.flags.test_message == 1) |
12e364b9 | 1474 | return FALSE; |
e22a4a0f | 1475 | return TRUE; |
12e364b9 KC |
1476 | } |
1477 | return FALSE; | |
1478 | } | |
1479 | ||
1480 | /* | |
1481 | * The general parahotplug flow works as follows. The visorchipset | |
1482 | * driver receives a DEVICE_CHANGESTATE message from Command | |
1483 | * specifying a physical device to enable or disable. The CONTROLVM | |
1484 | * message handler calls parahotplug_process_message, which then adds | |
1485 | * the message to a global list and kicks off a udev event which | |
1486 | * causes a user level script to enable or disable the specified | |
1487 | * device. The udev script then writes to | |
1488 | * /proc/visorchipset/parahotplug, which causes parahotplug_proc_write | |
1489 | * to get called, at which point the appropriate CONTROLVM message is | |
1490 | * retrieved from the list and responded to. | |
1491 | */ | |
1492 | ||
1493 | #define PARAHOTPLUG_TIMEOUT_MS 2000 | |
1494 | ||
1495 | /* | |
1496 | * Generate unique int to match an outstanding CONTROLVM message with a | |
1497 | * udev script /proc response | |
1498 | */ | |
1499 | static int | |
1500 | parahotplug_next_id(void) | |
1501 | { | |
1502 | static atomic_t id = ATOMIC_INIT(0); | |
26eb2c0c | 1503 | |
12e364b9 KC |
1504 | return atomic_inc_return(&id); |
1505 | } | |
1506 | ||
1507 | /* | |
1508 | * Returns the time (in jiffies) when a CONTROLVM message on the list | |
1509 | * should expire -- PARAHOTPLUG_TIMEOUT_MS in the future | |
1510 | */ | |
1511 | static unsigned long | |
1512 | parahotplug_next_expiration(void) | |
1513 | { | |
2cc1a1b3 | 1514 | return jiffies + msecs_to_jiffies(PARAHOTPLUG_TIMEOUT_MS); |
12e364b9 KC |
1515 | } |
1516 | ||
1517 | /* | |
1518 | * Create a parahotplug_request, which is basically a wrapper for a | |
1519 | * CONTROLVM_MESSAGE that we can stick on a list | |
1520 | */ | |
1521 | static struct parahotplug_request * | |
3ab47701 | 1522 | parahotplug_request_create(struct controlvm_message *msg) |
12e364b9 | 1523 | { |
ea0dcfcf QL |
1524 | struct parahotplug_request *req; |
1525 | ||
1526 | req = kmalloc(sizeof(*req), GFP_KERNEL|__GFP_NORETRY); | |
12e364b9 KC |
1527 | if (req == NULL) |
1528 | return NULL; | |
1529 | ||
1530 | req->id = parahotplug_next_id(); | |
1531 | req->expiration = parahotplug_next_expiration(); | |
1532 | req->msg = *msg; | |
1533 | ||
1534 | return req; | |
1535 | } | |
1536 | ||
1537 | /* | |
1538 | * Free a parahotplug_request. | |
1539 | */ | |
1540 | static void | |
1541 | parahotplug_request_destroy(struct parahotplug_request *req) | |
1542 | { | |
1543 | kfree(req); | |
1544 | } | |
1545 | ||
1546 | /* | |
1547 | * Cause uevent to run the user level script to do the disable/enable | |
1548 | * specified in (the CONTROLVM message in) the specified | |
1549 | * parahotplug_request | |
1550 | */ | |
1551 | static void | |
1552 | parahotplug_request_kickoff(struct parahotplug_request *req) | |
1553 | { | |
2ea5117b | 1554 | struct controlvm_message_packet *cmd = &req->msg.cmd; |
12e364b9 KC |
1555 | char env_cmd[40], env_id[40], env_state[40], env_bus[40], env_dev[40], |
1556 | env_func[40]; | |
1557 | char *envp[] = { | |
1558 | env_cmd, env_id, env_state, env_bus, env_dev, env_func, NULL | |
1559 | }; | |
1560 | ||
1561 | sprintf(env_cmd, "SPAR_PARAHOTPLUG=1"); | |
1562 | sprintf(env_id, "SPAR_PARAHOTPLUG_ID=%d", req->id); | |
1563 | sprintf(env_state, "SPAR_PARAHOTPLUG_STATE=%d", | |
2ea5117b | 1564 | cmd->device_change_state.state.active); |
12e364b9 | 1565 | sprintf(env_bus, "SPAR_PARAHOTPLUG_BUS=%d", |
2ea5117b | 1566 | cmd->device_change_state.bus_no); |
12e364b9 | 1567 | sprintf(env_dev, "SPAR_PARAHOTPLUG_DEVICE=%d", |
2ea5117b | 1568 | cmd->device_change_state.dev_no >> 3); |
12e364b9 | 1569 | sprintf(env_func, "SPAR_PARAHOTPLUG_FUNCTION=%d", |
2ea5117b | 1570 | cmd->device_change_state.dev_no & 0x7); |
12e364b9 | 1571 | |
12e364b9 KC |
1572 | kobject_uevent_env(&Visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, |
1573 | envp); | |
1574 | } | |
1575 | ||
1576 | /* | |
1577 | * Remove any request from the list that's been on there too long and | |
1578 | * respond with an error. | |
1579 | */ | |
1580 | static void | |
1581 | parahotplug_process_list(void) | |
1582 | { | |
1583 | struct list_head *pos = NULL; | |
1584 | struct list_head *tmp = NULL; | |
1585 | ||
1586 | spin_lock(&Parahotplug_request_list_lock); | |
1587 | ||
1588 | list_for_each_safe(pos, tmp, &Parahotplug_request_list) { | |
1589 | struct parahotplug_request *req = | |
1590 | list_entry(pos, struct parahotplug_request, list); | |
1591 | if (time_after_eq(jiffies, req->expiration)) { | |
1592 | list_del(pos); | |
98d7b594 | 1593 | if (req->msg.hdr.flags.response_expected) |
12e364b9 KC |
1594 | controlvm_respond_physdev_changestate( |
1595 | &req->msg.hdr, | |
1596 | CONTROLVM_RESP_ERROR_DEVICE_UDEV_TIMEOUT, | |
2ea5117b | 1597 | req->msg.cmd.device_change_state.state); |
12e364b9 KC |
1598 | parahotplug_request_destroy(req); |
1599 | } | |
1600 | } | |
1601 | ||
1602 | spin_unlock(&Parahotplug_request_list_lock); | |
1603 | } | |
1604 | ||
1605 | /* | |
1606 | * Called from the /proc handler, which means the user script has | |
1607 | * finished the enable/disable. Find the matching identifier, and | |
1608 | * respond to the CONTROLVM message with success. | |
1609 | */ | |
1610 | static int | |
b06bdf7d | 1611 | parahotplug_request_complete(int id, u16 active) |
12e364b9 KC |
1612 | { |
1613 | struct list_head *pos = NULL; | |
1614 | struct list_head *tmp = NULL; | |
1615 | ||
1616 | spin_lock(&Parahotplug_request_list_lock); | |
1617 | ||
1618 | /* Look for a request matching "id". */ | |
1619 | list_for_each_safe(pos, tmp, &Parahotplug_request_list) { | |
1620 | struct parahotplug_request *req = | |
1621 | list_entry(pos, struct parahotplug_request, list); | |
1622 | if (req->id == id) { | |
1623 | /* Found a match. Remove it from the list and | |
1624 | * respond. | |
1625 | */ | |
1626 | list_del(pos); | |
1627 | spin_unlock(&Parahotplug_request_list_lock); | |
2ea5117b | 1628 | req->msg.cmd.device_change_state.state.active = active; |
98d7b594 | 1629 | if (req->msg.hdr.flags.response_expected) |
12e364b9 KC |
1630 | controlvm_respond_physdev_changestate( |
1631 | &req->msg.hdr, CONTROLVM_RESP_SUCCESS, | |
2ea5117b | 1632 | req->msg.cmd.device_change_state.state); |
12e364b9 KC |
1633 | parahotplug_request_destroy(req); |
1634 | return 0; | |
1635 | } | |
1636 | } | |
1637 | ||
1638 | spin_unlock(&Parahotplug_request_list_lock); | |
1639 | return -1; | |
1640 | } | |
1641 | ||
1642 | /* | |
1643 | * Enables or disables a PCI device by kicking off a udev script | |
1644 | */ | |
bd5b9b32 | 1645 | static void |
3ab47701 | 1646 | parahotplug_process_message(struct controlvm_message *inmsg) |
12e364b9 KC |
1647 | { |
1648 | struct parahotplug_request *req; | |
1649 | ||
1650 | req = parahotplug_request_create(inmsg); | |
1651 | ||
0aca7844 | 1652 | if (req == NULL) |
12e364b9 | 1653 | return; |
12e364b9 | 1654 | |
2ea5117b | 1655 | if (inmsg->cmd.device_change_state.state.active) { |
12e364b9 KC |
1656 | /* For enable messages, just respond with success |
1657 | * right away. This is a bit of a hack, but there are | |
1658 | * issues with the early enable messages we get (with | |
1659 | * either the udev script not detecting that the device | |
1660 | * is up, or not getting called at all). Fortunately | |
1661 | * the messages that get lost don't matter anyway, as | |
1662 | * devices are automatically enabled at | |
1663 | * initialization. | |
1664 | */ | |
1665 | parahotplug_request_kickoff(req); | |
1666 | controlvm_respond_physdev_changestate(&inmsg->hdr, | |
2ea5117b BR |
1667 | CONTROLVM_RESP_SUCCESS, inmsg->cmd. |
1668 | device_change_state.state); | |
12e364b9 KC |
1669 | parahotplug_request_destroy(req); |
1670 | } else { | |
1671 | /* For disable messages, add the request to the | |
1672 | * request list before kicking off the udev script. It | |
1673 | * won't get responded to until the script has | |
1674 | * indicated it's done. | |
1675 | */ | |
1676 | spin_lock(&Parahotplug_request_list_lock); | |
1677 | list_add_tail(&(req->list), &Parahotplug_request_list); | |
1678 | spin_unlock(&Parahotplug_request_list_lock); | |
1679 | ||
1680 | parahotplug_request_kickoff(req); | |
1681 | } | |
1682 | } | |
1683 | ||
12e364b9 KC |
1684 | /* Process a controlvm message. |
1685 | * Return result: | |
1686 | * FALSE - this function will return FALSE only in the case where the | |
1687 | * controlvm message was NOT processed, but processing must be | |
1688 | * retried before reading the next controlvm message; a | |
1689 | * scenario where this can occur is when we need to throttle | |
1690 | * the allocation of memory in which to copy out controlvm | |
1691 | * payload data | |
1692 | * TRUE - processing of the controlvm message completed, | |
1693 | * either successfully or with an error. | |
1694 | */ | |
1695 | static BOOL | |
3ab47701 | 1696 | handle_command(struct controlvm_message inmsg, HOSTADDRESS channel_addr) |
12e364b9 | 1697 | { |
2ea5117b | 1698 | struct controlvm_message_packet *cmd = &inmsg.cmd; |
5fc0229a | 1699 | u64 parametersAddr = 0; |
b3c55b13 | 1700 | u32 parametersBytes = 0; |
317d9614 | 1701 | struct parser_context *parser_ctx = NULL; |
12e364b9 | 1702 | BOOL isLocalAddr = FALSE; |
3ab47701 | 1703 | struct controlvm_message ackmsg; |
12e364b9 KC |
1704 | |
1705 | /* create parsing context if necessary */ | |
98d7b594 | 1706 | isLocalAddr = (inmsg.hdr.flags.test_message == 1); |
0aca7844 | 1707 | if (channel_addr == 0) |
12e364b9 | 1708 | return TRUE; |
98d7b594 BR |
1709 | parametersAddr = channel_addr + inmsg.hdr.payload_vm_offset; |
1710 | parametersBytes = inmsg.hdr.payload_bytes; | |
12e364b9 KC |
1711 | |
1712 | /* Parameter and channel addresses within test messages actually lie | |
1713 | * within our OS-controlled memory. We need to know that, because it | |
1714 | * makes a difference in how we compute the virtual address. | |
1715 | */ | |
1716 | if (parametersAddr != 0 && parametersBytes != 0) { | |
1717 | BOOL retry = FALSE; | |
26eb2c0c | 1718 | |
12e364b9 | 1719 | parser_ctx = |
b2d97e4b | 1720 | parser_init_byte_stream(parametersAddr, parametersBytes, |
12e364b9 | 1721 | isLocalAddr, &retry); |
1b08872e BR |
1722 | if (!parser_ctx && retry) |
1723 | return FALSE; | |
12e364b9 KC |
1724 | } |
1725 | ||
1726 | if (!isLocalAddr) { | |
1727 | controlvm_init_response(&ackmsg, &inmsg.hdr, | |
1728 | CONTROLVM_RESP_SUCCESS); | |
1b08872e BR |
1729 | if (ControlVm_channel) |
1730 | visorchannel_signalinsert(ControlVm_channel, | |
1731 | CONTROLVM_QUEUE_ACK, | |
1732 | &ackmsg); | |
12e364b9 | 1733 | } |
98d7b594 | 1734 | switch (inmsg.hdr.id) { |
12e364b9 | 1735 | case CONTROLVM_CHIPSET_INIT: |
12e364b9 KC |
1736 | chipset_init(&inmsg); |
1737 | break; | |
1738 | case CONTROLVM_BUS_CREATE: | |
12e364b9 KC |
1739 | bus_create(&inmsg); |
1740 | break; | |
1741 | case CONTROLVM_BUS_DESTROY: | |
12e364b9 KC |
1742 | bus_destroy(&inmsg); |
1743 | break; | |
1744 | case CONTROLVM_BUS_CONFIGURE: | |
12e364b9 KC |
1745 | bus_configure(&inmsg, parser_ctx); |
1746 | break; | |
1747 | case CONTROLVM_DEVICE_CREATE: | |
12e364b9 KC |
1748 | my_device_create(&inmsg); |
1749 | break; | |
1750 | case CONTROLVM_DEVICE_CHANGESTATE: | |
2ea5117b | 1751 | if (cmd->device_change_state.flags.phys_device) { |
12e364b9 KC |
1752 | parahotplug_process_message(&inmsg); |
1753 | } else { | |
12e364b9 KC |
1754 | /* save the hdr and cmd structures for later use */ |
1755 | /* when sending back the response to Command */ | |
1756 | my_device_changestate(&inmsg); | |
1757 | g_DiagMsgHdr = inmsg.hdr; | |
1758 | g_DeviceChangeStatePacket = inmsg.cmd; | |
1759 | break; | |
1760 | } | |
1761 | break; | |
1762 | case CONTROLVM_DEVICE_DESTROY: | |
12e364b9 KC |
1763 | my_device_destroy(&inmsg); |
1764 | break; | |
1765 | case CONTROLVM_DEVICE_CONFIGURE: | |
12e364b9 | 1766 | /* no op for now, just send a respond that we passed */ |
98d7b594 | 1767 | if (inmsg.hdr.flags.response_expected) |
12e364b9 KC |
1768 | controlvm_respond(&inmsg.hdr, CONTROLVM_RESP_SUCCESS); |
1769 | break; | |
1770 | case CONTROLVM_CHIPSET_READY: | |
12e364b9 KC |
1771 | chipset_ready(&inmsg.hdr); |
1772 | break; | |
1773 | case CONTROLVM_CHIPSET_SELFTEST: | |
12e364b9 KC |
1774 | chipset_selftest(&inmsg.hdr); |
1775 | break; | |
1776 | case CONTROLVM_CHIPSET_STOP: | |
12e364b9 KC |
1777 | chipset_notready(&inmsg.hdr); |
1778 | break; | |
1779 | default: | |
98d7b594 | 1780 | if (inmsg.hdr.flags.response_expected) |
12e364b9 KC |
1781 | controlvm_respond(&inmsg.hdr, |
1782 | -CONTROLVM_RESP_ERROR_MESSAGE_ID_UNKNOWN); | |
1783 | break; | |
1784 | } | |
1785 | ||
1786 | if (parser_ctx != NULL) { | |
1787 | parser_done(parser_ctx); | |
1788 | parser_ctx = NULL; | |
1789 | } | |
1790 | return TRUE; | |
1791 | } | |
1792 | ||
d746cb55 | 1793 | static HOSTADDRESS controlvm_get_channel_address(void) |
524b0b63 | 1794 | { |
5fc0229a | 1795 | u64 addr = 0; |
b3c55b13 | 1796 | u32 size = 0; |
524b0b63 | 1797 | |
0aca7844 | 1798 | if (!VMCALL_SUCCESSFUL(issue_vmcall_io_controlvm_addr(&addr, &size))) |
524b0b63 | 1799 | return 0; |
0aca7844 | 1800 | |
524b0b63 BR |
1801 | return addr; |
1802 | } | |
1803 | ||
12e364b9 KC |
1804 | static void |
1805 | controlvm_periodic_work(struct work_struct *work) | |
1806 | { | |
3ab47701 | 1807 | struct controlvm_message inmsg; |
12e364b9 KC |
1808 | BOOL gotACommand = FALSE; |
1809 | BOOL handle_command_failed = FALSE; | |
5fc0229a | 1810 | static u64 Poll_Count; |
12e364b9 KC |
1811 | |
1812 | /* make sure visorbus server is registered for controlvm callbacks */ | |
1813 | if (visorchipset_serverregwait && !serverregistered) | |
097f4c19 | 1814 | goto Away; |
12e364b9 KC |
1815 | /* make sure visorclientbus server is regsitered for controlvm |
1816 | * callbacks | |
1817 | */ | |
1818 | if (visorchipset_clientregwait && !clientregistered) | |
097f4c19 | 1819 | goto Away; |
12e364b9 | 1820 | |
12e364b9 | 1821 | Poll_Count++; |
8a1182eb | 1822 | if (Poll_Count >= 250) |
12e364b9 KC |
1823 | ; /* keep going */ |
1824 | else | |
097f4c19 | 1825 | goto Away; |
12e364b9 KC |
1826 | |
1827 | /* Check events to determine if response to CHIPSET_READY | |
1828 | * should be sent | |
1829 | */ | |
1830 | if (visorchipset_holdchipsetready | |
98d7b594 | 1831 | && (g_ChipSetMsgHdr.id != CONTROLVM_INVALID)) { |
12e364b9 | 1832 | if (check_chipset_events() == 1) { |
12e364b9 KC |
1833 | controlvm_respond(&g_ChipSetMsgHdr, 0); |
1834 | clear_chipset_events(); | |
1835 | memset(&g_ChipSetMsgHdr, 0, | |
98d7b594 | 1836 | sizeof(struct controlvm_message_header)); |
12e364b9 KC |
1837 | } |
1838 | } | |
1839 | ||
8a1182eb BR |
1840 | while (visorchannel_signalremove(ControlVm_channel, |
1841 | CONTROLVM_QUEUE_RESPONSE, | |
1842 | &inmsg)) { | |
12e364b9 | 1843 | } |
8a1182eb BR |
1844 | if (!gotACommand) { |
1845 | if (ControlVm_Pending_Msg_Valid) { | |
1846 | /* we throttled processing of a prior | |
1847 | * msg, so try to process it again | |
1848 | * rather than reading a new one | |
1849 | */ | |
1850 | inmsg = ControlVm_Pending_Msg; | |
1851 | ControlVm_Pending_Msg_Valid = FALSE; | |
1852 | gotACommand = TRUE; | |
1853 | } else | |
1854 | gotACommand = read_controlvm_event(&inmsg); | |
1855 | } | |
12e364b9 KC |
1856 | |
1857 | handle_command_failed = FALSE; | |
1858 | while (gotACommand && (!handle_command_failed)) { | |
1859 | Most_recent_message_jiffies = jiffies; | |
8a1182eb BR |
1860 | if (handle_command(inmsg, |
1861 | visorchannel_get_physaddr | |
1862 | (ControlVm_channel))) | |
1863 | gotACommand = read_controlvm_event(&inmsg); | |
1864 | else { | |
1865 | /* this is a scenario where throttling | |
1866 | * is required, but probably NOT an | |
1867 | * error...; we stash the current | |
1868 | * controlvm msg so we will attempt to | |
1869 | * reprocess it on our next loop | |
1870 | */ | |
1871 | handle_command_failed = TRUE; | |
1872 | ControlVm_Pending_Msg = inmsg; | |
1873 | ControlVm_Pending_Msg_Valid = TRUE; | |
12e364b9 KC |
1874 | } |
1875 | } | |
1876 | ||
1877 | /* parahotplug_worker */ | |
1878 | parahotplug_process_list(); | |
1879 | ||
12e364b9 KC |
1880 | Away: |
1881 | ||
1882 | if (time_after(jiffies, | |
1883 | Most_recent_message_jiffies + (HZ * MIN_IDLE_SECONDS))) { | |
1884 | /* it's been longer than MIN_IDLE_SECONDS since we | |
1885 | * processed our last controlvm message; slow down the | |
1886 | * polling | |
1887 | */ | |
911e213e BR |
1888 | if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_SLOW) |
1889 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; | |
12e364b9 | 1890 | } else { |
911e213e BR |
1891 | if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_FAST) |
1892 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; | |
12e364b9 KC |
1893 | } |
1894 | ||
4b4b535e | 1895 | queue_delayed_work(Periodic_controlvm_workqueue, |
911e213e | 1896 | &Periodic_controlvm_work, poll_jiffies); |
12e364b9 KC |
1897 | } |
1898 | ||
1899 | static void | |
1900 | setup_crash_devices_work_queue(struct work_struct *work) | |
1901 | { | |
1902 | ||
3ab47701 BR |
1903 | struct controlvm_message localCrashCreateBusMsg; |
1904 | struct controlvm_message localCrashCreateDevMsg; | |
1905 | struct controlvm_message msg; | |
b3c55b13 | 1906 | u32 localSavedCrashMsgOffset; |
b06bdf7d | 1907 | u16 localSavedCrashMsgCount; |
12e364b9 KC |
1908 | |
1909 | /* make sure visorbus server is registered for controlvm callbacks */ | |
1910 | if (visorchipset_serverregwait && !serverregistered) | |
097f4c19 | 1911 | goto Away; |
12e364b9 KC |
1912 | |
1913 | /* make sure visorclientbus server is regsitered for controlvm | |
1914 | * callbacks | |
1915 | */ | |
1916 | if (visorchipset_clientregwait && !clientregistered) | |
097f4c19 | 1917 | goto Away; |
12e364b9 KC |
1918 | |
1919 | POSTCODE_LINUX_2(CRASH_DEV_ENTRY_PC, POSTCODE_SEVERITY_INFO); | |
1920 | ||
1921 | /* send init chipset msg */ | |
98d7b594 | 1922 | msg.hdr.id = CONTROLVM_CHIPSET_INIT; |
2ea5117b BR |
1923 | msg.cmd.init_chipset.bus_count = 23; |
1924 | msg.cmd.init_chipset.switch_count = 0; | |
12e364b9 KC |
1925 | |
1926 | chipset_init(&msg); | |
1927 | ||
12e364b9 KC |
1928 | /* get saved message count */ |
1929 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
1930 | offsetof(struct spar_controlvm_channel_protocol, |
1931 | saved_crash_message_count), | |
b06bdf7d | 1932 | &localSavedCrashMsgCount, sizeof(u16)) < 0) { |
12e364b9 KC |
1933 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
1934 | POSTCODE_SEVERITY_ERR); | |
1935 | return; | |
1936 | } | |
1937 | ||
1938 | if (localSavedCrashMsgCount != CONTROLVM_CRASHMSG_MAX) { | |
12e364b9 KC |
1939 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, |
1940 | localSavedCrashMsgCount, | |
1941 | POSTCODE_SEVERITY_ERR); | |
1942 | return; | |
1943 | } | |
1944 | ||
1945 | /* get saved crash message offset */ | |
1946 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
1947 | offsetof(struct spar_controlvm_channel_protocol, |
1948 | saved_crash_message_offset), | |
b3c55b13 | 1949 | &localSavedCrashMsgOffset, sizeof(u32)) < 0) { |
12e364b9 KC |
1950 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
1951 | POSTCODE_SEVERITY_ERR); | |
1952 | return; | |
1953 | } | |
1954 | ||
1955 | /* read create device message for storage bus offset */ | |
1956 | if (visorchannel_read(ControlVm_channel, | |
1957 | localSavedCrashMsgOffset, | |
1958 | &localCrashCreateBusMsg, | |
3ab47701 | 1959 | sizeof(struct controlvm_message)) < 0) { |
12e364b9 KC |
1960 | POSTCODE_LINUX_2(CRASH_DEV_RD_BUS_FAIULRE_PC, |
1961 | POSTCODE_SEVERITY_ERR); | |
1962 | return; | |
1963 | } | |
1964 | ||
1965 | /* read create device message for storage device */ | |
1966 | if (visorchannel_read(ControlVm_channel, | |
1967 | localSavedCrashMsgOffset + | |
3ab47701 | 1968 | sizeof(struct controlvm_message), |
12e364b9 | 1969 | &localCrashCreateDevMsg, |
3ab47701 | 1970 | sizeof(struct controlvm_message)) < 0) { |
12e364b9 KC |
1971 | POSTCODE_LINUX_2(CRASH_DEV_RD_DEV_FAIULRE_PC, |
1972 | POSTCODE_SEVERITY_ERR); | |
1973 | return; | |
1974 | } | |
1975 | ||
1976 | /* reuse IOVM create bus message */ | |
2ea5117b | 1977 | if (localCrashCreateBusMsg.cmd.create_bus.channel_addr != 0) |
12e364b9 KC |
1978 | bus_create(&localCrashCreateBusMsg); |
1979 | else { | |
12e364b9 KC |
1980 | POSTCODE_LINUX_2(CRASH_DEV_BUS_NULL_FAILURE_PC, |
1981 | POSTCODE_SEVERITY_ERR); | |
1982 | return; | |
1983 | } | |
1984 | ||
1985 | /* reuse create device message for storage device */ | |
f91b9262 | 1986 | if (localCrashCreateDevMsg.cmd.create_device.channel_addr != 0) |
12e364b9 KC |
1987 | my_device_create(&localCrashCreateDevMsg); |
1988 | else { | |
12e364b9 KC |
1989 | POSTCODE_LINUX_2(CRASH_DEV_DEV_NULL_FAILURE_PC, |
1990 | POSTCODE_SEVERITY_ERR); | |
1991 | return; | |
1992 | } | |
12e364b9 KC |
1993 | POSTCODE_LINUX_2(CRASH_DEV_EXIT_PC, POSTCODE_SEVERITY_INFO); |
1994 | return; | |
1995 | ||
1996 | Away: | |
1997 | ||
911e213e | 1998 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; |
12e364b9 | 1999 | |
4b4b535e | 2000 | queue_delayed_work(Periodic_controlvm_workqueue, |
911e213e | 2001 | &Periodic_controlvm_work, poll_jiffies); |
12e364b9 KC |
2002 | } |
2003 | ||
2004 | static void | |
2005 | bus_create_response(ulong busNo, int response) | |
2006 | { | |
2007 | bus_responder(CONTROLVM_BUS_CREATE, busNo, response); | |
2008 | } | |
2009 | ||
2010 | static void | |
2011 | bus_destroy_response(ulong busNo, int response) | |
2012 | { | |
2013 | bus_responder(CONTROLVM_BUS_DESTROY, busNo, response); | |
2014 | } | |
2015 | ||
2016 | static void | |
2017 | device_create_response(ulong busNo, ulong devNo, int response) | |
2018 | { | |
2019 | device_responder(CONTROLVM_DEVICE_CREATE, busNo, devNo, response); | |
2020 | } | |
2021 | ||
2022 | static void | |
2023 | device_destroy_response(ulong busNo, ulong devNo, int response) | |
2024 | { | |
2025 | device_responder(CONTROLVM_DEVICE_DESTROY, busNo, devNo, response); | |
2026 | } | |
2027 | ||
2028 | void | |
8420f417 | 2029 | visorchipset_device_pause_response(ulong bus_no, ulong dev_no, int response) |
12e364b9 KC |
2030 | { |
2031 | ||
2032 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, | |
8420f417 | 2033 | bus_no, dev_no, response, |
bd0d2dcc | 2034 | segment_state_standby); |
12e364b9 | 2035 | } |
927c7927 | 2036 | EXPORT_SYMBOL_GPL(visorchipset_device_pause_response); |
12e364b9 KC |
2037 | |
2038 | static void | |
2039 | device_resume_response(ulong busNo, ulong devNo, int response) | |
2040 | { | |
2041 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, | |
2042 | busNo, devNo, response, | |
bd0d2dcc | 2043 | segment_state_running); |
12e364b9 KC |
2044 | } |
2045 | ||
2046 | BOOL | |
77db7127 | 2047 | visorchipset_get_bus_info(ulong bus_no, struct visorchipset_bus_info *bus_info) |
12e364b9 | 2048 | { |
77db7127 | 2049 | void *p = findbus(&BusInfoList, bus_no); |
26eb2c0c | 2050 | |
0aca7844 | 2051 | if (!p) |
12e364b9 | 2052 | return FALSE; |
77db7127 | 2053 | memcpy(bus_info, p, sizeof(struct visorchipset_bus_info)); |
12e364b9 KC |
2054 | return TRUE; |
2055 | } | |
2056 | EXPORT_SYMBOL_GPL(visorchipset_get_bus_info); | |
2057 | ||
2058 | BOOL | |
58dd8f2d | 2059 | visorchipset_set_bus_context(ulong bus_no, void *context) |
12e364b9 | 2060 | { |
58dd8f2d | 2061 | struct visorchipset_bus_info *p = findbus(&BusInfoList, bus_no); |
26eb2c0c | 2062 | |
0aca7844 | 2063 | if (!p) |
12e364b9 | 2064 | return FALSE; |
12e364b9 KC |
2065 | p->bus_driver_context = context; |
2066 | return TRUE; | |
2067 | } | |
2068 | EXPORT_SYMBOL_GPL(visorchipset_set_bus_context); | |
2069 | ||
2070 | BOOL | |
b486df19 BR |
2071 | visorchipset_get_device_info(ulong bus_no, ulong dev_no, |
2072 | struct visorchipset_device_info *dev_info) | |
12e364b9 | 2073 | { |
b486df19 | 2074 | void *p = finddevice(&DevInfoList, bus_no, dev_no); |
26eb2c0c | 2075 | |
0aca7844 | 2076 | if (!p) |
12e364b9 | 2077 | return FALSE; |
b486df19 | 2078 | memcpy(dev_info, p, sizeof(struct visorchipset_device_info)); |
12e364b9 KC |
2079 | return TRUE; |
2080 | } | |
2081 | EXPORT_SYMBOL_GPL(visorchipset_get_device_info); | |
2082 | ||
2083 | BOOL | |
cf0bd0b5 | 2084 | visorchipset_set_device_context(ulong bus_no, ulong dev_no, void *context) |
12e364b9 | 2085 | { |
246e0cd0 | 2086 | struct visorchipset_device_info *p = |
cf0bd0b5 | 2087 | finddevice(&DevInfoList, bus_no, dev_no); |
26eb2c0c | 2088 | |
0aca7844 | 2089 | if (!p) |
12e364b9 | 2090 | return FALSE; |
12e364b9 KC |
2091 | p->bus_driver_context = context; |
2092 | return TRUE; | |
2093 | } | |
2094 | EXPORT_SYMBOL_GPL(visorchipset_set_device_context); | |
2095 | ||
2096 | /* Generic wrapper function for allocating memory from a kmem_cache pool. | |
2097 | */ | |
2098 | void * | |
2099 | visorchipset_cache_alloc(struct kmem_cache *pool, BOOL ok_to_block, | |
2100 | char *fn, int ln) | |
2101 | { | |
2102 | gfp_t gfp; | |
2103 | void *p; | |
2104 | ||
2105 | if (ok_to_block) | |
2106 | gfp = GFP_KERNEL; | |
2107 | else | |
2108 | gfp = GFP_ATOMIC; | |
2109 | /* __GFP_NORETRY means "ok to fail", meaning | |
2110 | * kmem_cache_alloc() can return NULL, implying the caller CAN | |
2111 | * cope with failure. If you do NOT specify __GFP_NORETRY, | |
2112 | * Linux will go to extreme measures to get memory for you | |
2113 | * (like, invoke oom killer), which will probably cripple the | |
2114 | * system. | |
2115 | */ | |
2116 | gfp |= __GFP_NORETRY; | |
2117 | p = kmem_cache_alloc(pool, gfp); | |
0aca7844 | 2118 | if (!p) |
12e364b9 | 2119 | return NULL; |
0aca7844 | 2120 | |
12e364b9 KC |
2121 | atomic_inc(&Visorchipset_cache_buffers_in_use); |
2122 | return p; | |
2123 | } | |
2124 | ||
2125 | /* Generic wrapper function for freeing memory from a kmem_cache pool. | |
2126 | */ | |
2127 | void | |
2128 | visorchipset_cache_free(struct kmem_cache *pool, void *p, char *fn, int ln) | |
2129 | { | |
0aca7844 | 2130 | if (!p) |
12e364b9 | 2131 | return; |
0aca7844 | 2132 | |
12e364b9 KC |
2133 | atomic_dec(&Visorchipset_cache_buffers_in_use); |
2134 | kmem_cache_free(pool, p); | |
2135 | } | |
2136 | ||
18b87ed1 BR |
2137 | static ssize_t chipsetready_store(struct device *dev, |
2138 | struct device_attribute *attr, const char *buf, size_t count) | |
12e364b9 | 2139 | { |
18b87ed1 | 2140 | char msgtype[64]; |
12e364b9 | 2141 | |
66e24b76 BR |
2142 | if (sscanf(buf, "%63s", msgtype) != 1) |
2143 | return -EINVAL; | |
2144 | ||
2145 | if (strcmp(msgtype, "CALLHOMEDISK_MOUNTED") == 0) { | |
2146 | chipset_events[0] = 1; | |
2147 | return count; | |
2148 | } else if (strcmp(msgtype, "MODULES_LOADED") == 0) { | |
2149 | chipset_events[1] = 1; | |
2150 | return count; | |
e22a4a0f BR |
2151 | } |
2152 | return -EINVAL; | |
12e364b9 KC |
2153 | } |
2154 | ||
e56fa7cd BR |
2155 | /* The parahotplug/devicedisabled interface gets called by our support script |
2156 | * when an SR-IOV device has been shut down. The ID is passed to the script | |
2157 | * and then passed back when the device has been removed. | |
2158 | */ | |
2159 | static ssize_t devicedisabled_store(struct device *dev, | |
2160 | struct device_attribute *attr, const char *buf, size_t count) | |
2161 | { | |
2162 | uint id; | |
2163 | ||
2164 | if (kstrtouint(buf, 10, &id) != 0) | |
2165 | return -EINVAL; | |
2166 | ||
2167 | parahotplug_request_complete(id, 0); | |
2168 | return count; | |
2169 | } | |
2170 | ||
2171 | /* The parahotplug/deviceenabled interface gets called by our support script | |
2172 | * when an SR-IOV device has been recovered. The ID is passed to the script | |
2173 | * and then passed back when the device has been brought back up. | |
2174 | */ | |
2175 | static ssize_t deviceenabled_store(struct device *dev, | |
2176 | struct device_attribute *attr, const char *buf, size_t count) | |
2177 | { | |
2178 | uint id; | |
2179 | ||
2180 | if (kstrtouint(buf, 10, &id) != 0) | |
2181 | return -EINVAL; | |
2182 | ||
2183 | parahotplug_request_complete(id, 1); | |
2184 | return count; | |
2185 | } | |
2186 | ||
12e364b9 KC |
2187 | static int __init |
2188 | visorchipset_init(void) | |
2189 | { | |
2190 | int rc = 0, x = 0; | |
8a1182eb | 2191 | HOSTADDRESS addr; |
12e364b9 | 2192 | |
fcd0157e KC |
2193 | if (!unisys_spar_platform) |
2194 | return -ENODEV; | |
2195 | ||
12e364b9 KC |
2196 | memset(&BusDev_Server_Notifiers, 0, sizeof(BusDev_Server_Notifiers)); |
2197 | memset(&BusDev_Client_Notifiers, 0, sizeof(BusDev_Client_Notifiers)); | |
2198 | memset(&ControlVm_payload_info, 0, sizeof(ControlVm_payload_info)); | |
2199 | memset(&LiveDump_info, 0, sizeof(LiveDump_info)); | |
2200 | atomic_set(&LiveDump_info.buffers_in_use, 0); | |
2201 | ||
9f8d0e8b | 2202 | if (visorchipset_testvnic) { |
9f8d0e8b KC |
2203 | POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, x, DIAG_SEVERITY_ERR); |
2204 | rc = x; | |
2205 | goto Away; | |
2206 | } | |
12e364b9 | 2207 | |
8a1182eb BR |
2208 | addr = controlvm_get_channel_address(); |
2209 | if (addr != 0) { | |
2210 | ControlVm_channel = | |
2211 | visorchannel_create_with_lock | |
2212 | (addr, | |
d19642f6 | 2213 | sizeof(struct spar_controlvm_channel_protocol), |
5fbaa4b3 | 2214 | spar_controlvm_channel_protocol_uuid); |
93a84565 BR |
2215 | if (SPAR_CONTROLVM_CHANNEL_OK_CLIENT( |
2216 | visorchannel_get_header(ControlVm_channel))) { | |
8a1182eb BR |
2217 | initialize_controlvm_payload(); |
2218 | } else { | |
8a1182eb BR |
2219 | visorchannel_destroy(ControlVm_channel); |
2220 | ControlVm_channel = NULL; | |
2221 | return -ENODEV; | |
2222 | } | |
2223 | } else { | |
8a1182eb BR |
2224 | return -ENODEV; |
2225 | } | |
2226 | ||
12e364b9 | 2227 | MajorDev = MKDEV(visorchipset_major, 0); |
9f8d0e8b | 2228 | rc = visorchipset_file_init(MajorDev, &ControlVm_channel); |
4cb005a9 | 2229 | if (rc < 0) { |
4cb005a9 KC |
2230 | POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC, DIAG_SEVERITY_ERR); |
2231 | goto Away; | |
2232 | } | |
9f8d0e8b | 2233 | |
98d7b594 | 2234 | memset(&g_DiagMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2235 | |
98d7b594 | 2236 | memset(&g_ChipSetMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2237 | |
98d7b594 | 2238 | memset(&g_DelDumpMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2239 | |
12e364b9 KC |
2240 | Putfile_buffer_list_pool = |
2241 | kmem_cache_create(Putfile_buffer_list_pool_name, | |
2242 | sizeof(struct putfile_buffer_entry), | |
2243 | 0, SLAB_HWCACHE_ALIGN, NULL); | |
2244 | if (!Putfile_buffer_list_pool) { | |
4cb005a9 KC |
2245 | POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC, DIAG_SEVERITY_ERR); |
2246 | rc = -1; | |
2247 | goto Away; | |
12e364b9 | 2248 | } |
2098dbd1 | 2249 | if (!visorchipset_disable_controlvm) { |
12e364b9 KC |
2250 | /* if booting in a crash kernel */ |
2251 | if (visorchipset_crash_kernel) | |
2252 | INIT_DELAYED_WORK(&Periodic_controlvm_work, | |
2253 | setup_crash_devices_work_queue); | |
2254 | else | |
2255 | INIT_DELAYED_WORK(&Periodic_controlvm_work, | |
2256 | controlvm_periodic_work); | |
2257 | Periodic_controlvm_workqueue = | |
2258 | create_singlethread_workqueue("visorchipset_controlvm"); | |
2259 | ||
4cb005a9 | 2260 | if (Periodic_controlvm_workqueue == NULL) { |
4cb005a9 KC |
2261 | POSTCODE_LINUX_2(CREATE_WORKQUEUE_FAILED_PC, |
2262 | DIAG_SEVERITY_ERR); | |
2263 | rc = -ENOMEM; | |
2264 | goto Away; | |
2265 | } | |
12e364b9 | 2266 | Most_recent_message_jiffies = jiffies; |
911e213e | 2267 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; |
9f8d0e8b | 2268 | rc = queue_delayed_work(Periodic_controlvm_workqueue, |
911e213e | 2269 | &Periodic_controlvm_work, poll_jiffies); |
4cb005a9 | 2270 | if (rc < 0) { |
4cb005a9 KC |
2271 | POSTCODE_LINUX_2(QUEUE_DELAYED_WORK_PC, |
2272 | DIAG_SEVERITY_ERR); | |
2273 | goto Away; | |
2274 | } | |
9f8d0e8b | 2275 | |
12e364b9 KC |
2276 | } |
2277 | ||
2278 | Visorchipset_platform_device.dev.devt = MajorDev; | |
4cb005a9 | 2279 | if (platform_device_register(&Visorchipset_platform_device) < 0) { |
4cb005a9 KC |
2280 | POSTCODE_LINUX_2(DEVICE_REGISTER_FAILURE_PC, DIAG_SEVERITY_ERR); |
2281 | rc = -1; | |
2282 | goto Away; | |
2283 | } | |
12e364b9 | 2284 | POSTCODE_LINUX_2(CHIPSET_INIT_SUCCESS_PC, POSTCODE_SEVERITY_INFO); |
22ad57ba | 2285 | rc = 0; |
12e364b9 | 2286 | Away: |
12e364b9 | 2287 | if (rc) { |
12e364b9 KC |
2288 | POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, rc, |
2289 | POSTCODE_SEVERITY_ERR); | |
2290 | } | |
2291 | return rc; | |
2292 | } | |
2293 | ||
2294 | static void | |
2295 | visorchipset_exit(void) | |
2296 | { | |
12e364b9 KC |
2297 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); |
2298 | ||
2299 | if (visorchipset_disable_controlvm) { | |
2300 | ; | |
2301 | } else { | |
2302 | cancel_delayed_work(&Periodic_controlvm_work); | |
2303 | flush_workqueue(Periodic_controlvm_workqueue); | |
2304 | destroy_workqueue(Periodic_controlvm_workqueue); | |
2305 | Periodic_controlvm_workqueue = NULL; | |
2306 | destroy_controlvm_payload_info(&ControlVm_payload_info); | |
2307 | } | |
2308 | Test_Vnic_channel = NULL; | |
2309 | if (Putfile_buffer_list_pool) { | |
2310 | kmem_cache_destroy(Putfile_buffer_list_pool); | |
2311 | Putfile_buffer_list_pool = NULL; | |
2312 | } | |
1783319f | 2313 | |
12e364b9 KC |
2314 | cleanup_controlvm_structures(); |
2315 | ||
98d7b594 | 2316 | memset(&g_DiagMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2317 | |
98d7b594 | 2318 | memset(&g_ChipSetMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2319 | |
98d7b594 | 2320 | memset(&g_DelDumpMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2321 | |
8a1182eb BR |
2322 | visorchannel_destroy(ControlVm_channel); |
2323 | ||
12e364b9 KC |
2324 | visorchipset_file_cleanup(); |
2325 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); | |
12e364b9 KC |
2326 | } |
2327 | ||
2328 | module_param_named(testvnic, visorchipset_testvnic, int, S_IRUGO); | |
2329 | MODULE_PARM_DESC(visorchipset_testvnic, "1 to test vnic, using dummy VNIC connected via a loopback to a physical ethernet"); | |
2330 | int visorchipset_testvnic = 0; | |
2331 | ||
2332 | module_param_named(testvnicclient, visorchipset_testvnicclient, int, S_IRUGO); | |
2333 | MODULE_PARM_DESC(visorchipset_testvnicclient, "1 to test vnic, using real VNIC channel attached to a separate IOVM guest"); | |
2334 | int visorchipset_testvnicclient = 0; | |
2335 | ||
2336 | module_param_named(testmsg, visorchipset_testmsg, int, S_IRUGO); | |
2337 | MODULE_PARM_DESC(visorchipset_testmsg, | |
2338 | "1 to manufacture the chipset, bus, and switch messages"); | |
2339 | int visorchipset_testmsg = 0; | |
2340 | ||
2341 | module_param_named(major, visorchipset_major, int, S_IRUGO); | |
2342 | MODULE_PARM_DESC(visorchipset_major, "major device number to use for the device node"); | |
2343 | int visorchipset_major = 0; | |
2344 | ||
2345 | module_param_named(serverregwait, visorchipset_serverregwait, int, S_IRUGO); | |
2346 | MODULE_PARM_DESC(visorchipset_serverreqwait, | |
2347 | "1 to have the module wait for the visor bus to register"); | |
2348 | int visorchipset_serverregwait = 0; /* default is off */ | |
2349 | module_param_named(clientregwait, visorchipset_clientregwait, int, S_IRUGO); | |
2350 | MODULE_PARM_DESC(visorchipset_clientregwait, "1 to have the module wait for the visorclientbus to register"); | |
2351 | int visorchipset_clientregwait = 1; /* default is on */ | |
2352 | module_param_named(testteardown, visorchipset_testteardown, int, S_IRUGO); | |
2353 | MODULE_PARM_DESC(visorchipset_testteardown, | |
2354 | "1 to test teardown of the chipset, bus, and switch"); | |
2355 | int visorchipset_testteardown = 0; /* default is off */ | |
2356 | module_param_named(disable_controlvm, visorchipset_disable_controlvm, int, | |
2357 | S_IRUGO); | |
2358 | MODULE_PARM_DESC(visorchipset_disable_controlvm, | |
2359 | "1 to disable polling of controlVm channel"); | |
2360 | int visorchipset_disable_controlvm = 0; /* default is off */ | |
2361 | module_param_named(crash_kernel, visorchipset_crash_kernel, int, S_IRUGO); | |
2362 | MODULE_PARM_DESC(visorchipset_crash_kernel, | |
2363 | "1 means we are running in crash kernel"); | |
2364 | int visorchipset_crash_kernel = 0; /* default is running in non-crash kernel */ | |
2365 | module_param_named(holdchipsetready, visorchipset_holdchipsetready, | |
2366 | int, S_IRUGO); | |
2367 | MODULE_PARM_DESC(visorchipset_holdchipsetready, | |
2368 | "1 to hold response to CHIPSET_READY"); | |
2369 | int visorchipset_holdchipsetready = 0; /* default is to send CHIPSET_READY | |
2370 | * response immediately */ | |
2371 | module_init(visorchipset_init); | |
2372 | module_exit(visorchipset_exit); | |
2373 | ||
2374 | MODULE_AUTHOR("Unisys"); | |
2375 | MODULE_LICENSE("GPL"); | |
2376 | MODULE_DESCRIPTION("Supervisor chipset driver for service partition: ver " | |
2377 | VERSION); | |
2378 | MODULE_VERSION(VERSION); |