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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; |
b53e0e93 | 52 | static ulong most_recent_message_jiffies; /* when we got our last |
bd5b9b32 | 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 | 67 | |
9232d2d6 BR |
68 | static struct delayed_work periodic_controlvm_work; |
69 | static struct workqueue_struct *periodic_controlvm_workqueue; | |
8f1947ac | 70 | static DEFINE_SEMAPHORE(notifier_lock); |
12e364b9 | 71 | |
da021f02 BR |
72 | static struct controlvm_message_header g_diag_msg_hdr; |
73 | static struct controlvm_message_header g_chipset_msg_hdr; | |
74 | static struct controlvm_message_header g_del_dump_msg_hdr; | |
59827f00 | 75 | static const uuid_le spar_diag_pool_channel_protocol_uuid = |
9eee5d1f | 76 | SPAR_DIAG_POOL_CHANNEL_PROTOCOL_UUID; |
12e364b9 | 77 | /* 0xffffff is an invalid Bus/Device number */ |
83d48905 BR |
78 | static ulong g_diagpool_bus_no = 0xffffff; |
79 | static ulong g_diagpool_dev_no = 0xffffff; | |
4f44b72d | 80 | static struct controlvm_message_packet g_devicechangestate_packet; |
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 | 86 | (((uuid_le_cmp(channel_type_guid,\ |
0639ba67 BR |
87 | spar_vnic_channel_protocol_uuid) == 0) ||\ |
88 | (uuid_le_cmp(channel_type_guid,\ | |
9eee5d1f | 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) \ | |
59827f00 BR |
93 | (uuid_le_cmp(channel_type_guid,\ |
94 | spar_diag_pool_channel_protocol_uuid) == 0) | |
12e364b9 | 95 | |
1390b88c BR |
96 | static LIST_HEAD(bus_info_list); |
97 | static LIST_HEAD(dev_info_list); | |
12e364b9 | 98 | |
c3d9a224 | 99 | static struct visorchannel *controlvm_channel; |
12e364b9 | 100 | |
84982fbf BR |
101 | /* Manages the request payload in the controlvm channel */ |
102 | static struct controlvm_payload_info { | |
c242233e | 103 | u8 __iomem *ptr; /* pointer to base address of payload pool */ |
5fc0229a | 104 | u64 offset; /* offset from beginning of controlvm |
12e364b9 | 105 | * channel to beginning of payload * pool */ |
b3c55b13 | 106 | u32 bytes; /* number of bytes in payload pool */ |
84982fbf | 107 | } controlvm_payload_info; |
12e364b9 | 108 | |
ea33b4ee BR |
109 | /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE / |
110 | * CONTROLVM_DUMP_GETTEXTDUMP / CONTROLVM_DUMP_COMPLETE conversation. | |
111 | */ | |
112 | static struct livedump_info { | |
113 | struct controlvm_message_header dumpcapture_header; | |
114 | struct controlvm_message_header gettextdump_header; | |
115 | struct controlvm_message_header dumpcomplete_header; | |
116 | BOOL gettextdump_outstanding; | |
12e364b9 KC |
117 | u32 crc32; |
118 | ulong length; | |
119 | atomic_t buffers_in_use; | |
120 | ulong destination; | |
ea33b4ee | 121 | } livedump_info; |
12e364b9 KC |
122 | |
123 | /* The following globals are used to handle the scenario where we are unable to | |
124 | * offload the payload from a controlvm message due to memory requirements. In | |
125 | * this scenario, we simply stash the controlvm message, then attempt to | |
126 | * process it again the next time controlvm_periodic_work() runs. | |
127 | */ | |
3ab47701 | 128 | static struct controlvm_message ControlVm_Pending_Msg; |
12e364b9 KC |
129 | static BOOL ControlVm_Pending_Msg_Valid = FALSE; |
130 | ||
131 | /* Pool of struct putfile_buffer_entry, for keeping track of pending (incoming) | |
132 | * TRANSMIT_FILE PutFile payloads. | |
133 | */ | |
134 | static struct kmem_cache *Putfile_buffer_list_pool; | |
135 | static const char Putfile_buffer_list_pool_name[] = | |
136 | "controlvm_putfile_buffer_list_pool"; | |
137 | ||
138 | /* This identifies a data buffer that has been received via a controlvm messages | |
139 | * in a remote --> local CONTROLVM_TRANSMIT_FILE conversation. | |
140 | */ | |
141 | struct putfile_buffer_entry { | |
142 | struct list_head next; /* putfile_buffer_entry list */ | |
317d9614 | 143 | struct parser_context *parser_ctx; /* points to input data buffer */ |
12e364b9 KC |
144 | }; |
145 | ||
146 | /* List of struct putfile_request *, via next_putfile_request member. | |
147 | * Each entry in this list identifies an outstanding TRANSMIT_FILE | |
148 | * conversation. | |
149 | */ | |
150 | static LIST_HEAD(Putfile_request_list); | |
151 | ||
152 | /* This describes a buffer and its current state of transfer (e.g., how many | |
153 | * bytes have already been supplied as putfile data, and how many bytes are | |
154 | * remaining) for a putfile_request. | |
155 | */ | |
156 | struct putfile_active_buffer { | |
157 | /* a payload from a controlvm message, containing a file data buffer */ | |
317d9614 | 158 | struct parser_context *parser_ctx; |
12e364b9 KC |
159 | /* points within data area of parser_ctx to next byte of data */ |
160 | u8 *pnext; | |
161 | /* # bytes left from <pnext> to the end of this data buffer */ | |
162 | size_t bytes_remaining; | |
163 | }; | |
164 | ||
165 | #define PUTFILE_REQUEST_SIG 0x0906101302281211 | |
166 | /* This identifies a single remote --> local CONTROLVM_TRANSMIT_FILE | |
167 | * conversation. Structs of this type are dynamically linked into | |
168 | * <Putfile_request_list>. | |
169 | */ | |
170 | struct putfile_request { | |
171 | u64 sig; /* PUTFILE_REQUEST_SIG */ | |
172 | ||
173 | /* header from original TransmitFile request */ | |
98d7b594 | 174 | struct controlvm_message_header controlvm_header; |
12e364b9 KC |
175 | u64 file_request_number; /* from original TransmitFile request */ |
176 | ||
177 | /* link to next struct putfile_request */ | |
178 | struct list_head next_putfile_request; | |
179 | ||
180 | /* most-recent sequence number supplied via a controlvm message */ | |
181 | u64 data_sequence_number; | |
182 | ||
183 | /* head of putfile_buffer_entry list, which describes the data to be | |
184 | * supplied as putfile data; | |
185 | * - this list is added to when controlvm messages come in that supply | |
186 | * file data | |
187 | * - this list is removed from via the hotplug program that is actually | |
188 | * consuming these buffers to write as file data */ | |
189 | struct list_head input_buffer_list; | |
190 | spinlock_t req_list_lock; /* lock for input_buffer_list */ | |
191 | ||
192 | /* waiters for input_buffer_list to go non-empty */ | |
193 | wait_queue_head_t input_buffer_wq; | |
194 | ||
195 | /* data not yet read within current putfile_buffer_entry */ | |
196 | struct putfile_active_buffer active_buf; | |
197 | ||
198 | /* <0 = failed, 0 = in-progress, >0 = successful; */ | |
199 | /* note that this must be set with req_list_lock, and if you set <0, */ | |
200 | /* it is your responsibility to also free up all of the other objects */ | |
201 | /* in this struct (like input_buffer_list, active_buf.parser_ctx) */ | |
202 | /* before releasing the lock */ | |
203 | int completion_status; | |
204 | }; | |
205 | ||
bd5b9b32 | 206 | static atomic_t Visorchipset_cache_buffers_in_use = ATOMIC_INIT(0); |
12e364b9 KC |
207 | |
208 | struct parahotplug_request { | |
209 | struct list_head list; | |
210 | int id; | |
211 | unsigned long expiration; | |
3ab47701 | 212 | struct controlvm_message msg; |
12e364b9 KC |
213 | }; |
214 | ||
215 | static LIST_HEAD(Parahotplug_request_list); | |
216 | static DEFINE_SPINLOCK(Parahotplug_request_list_lock); /* lock for above */ | |
217 | static void parahotplug_process_list(void); | |
218 | ||
219 | /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE / | |
220 | * CONTROLVM_REPORTEVENT. | |
221 | */ | |
fe90d892 BR |
222 | static struct visorchipset_busdev_notifiers BusDev_Server_Notifiers; |
223 | static struct visorchipset_busdev_notifiers BusDev_Client_Notifiers; | |
12e364b9 KC |
224 | |
225 | static void bus_create_response(ulong busNo, int response); | |
226 | static void bus_destroy_response(ulong busNo, int response); | |
227 | static void device_create_response(ulong busNo, ulong devNo, int response); | |
228 | static void device_destroy_response(ulong busNo, ulong devNo, int response); | |
229 | static void device_resume_response(ulong busNo, ulong devNo, int response); | |
230 | ||
929aa8ae | 231 | static struct visorchipset_busdev_responders BusDev_Responders = { |
12e364b9 KC |
232 | .bus_create = bus_create_response, |
233 | .bus_destroy = bus_destroy_response, | |
234 | .device_create = device_create_response, | |
235 | .device_destroy = device_destroy_response, | |
927c7927 | 236 | .device_pause = visorchipset_device_pause_response, |
12e364b9 KC |
237 | .device_resume = device_resume_response, |
238 | }; | |
239 | ||
240 | /* info for /dev/visorchipset */ | |
241 | static dev_t MajorDev = -1; /**< indicates major num for device */ | |
242 | ||
19f6634f BR |
243 | /* prototypes for attributes */ |
244 | static ssize_t toolaction_show(struct device *dev, | |
245 | struct device_attribute *attr, char *buf); | |
246 | static ssize_t toolaction_store(struct device *dev, | |
247 | struct device_attribute *attr, const char *buf, size_t count); | |
248 | static DEVICE_ATTR_RW(toolaction); | |
249 | ||
54b31229 BR |
250 | static ssize_t boottotool_show(struct device *dev, |
251 | struct device_attribute *attr, char *buf); | |
252 | static ssize_t boottotool_store(struct device *dev, | |
253 | struct device_attribute *attr, const char *buf, size_t count); | |
254 | static DEVICE_ATTR_RW(boottotool); | |
255 | ||
422af17c BR |
256 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, |
257 | char *buf); | |
258 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, | |
259 | const char *buf, size_t count); | |
260 | static DEVICE_ATTR_RW(error); | |
261 | ||
262 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, | |
263 | char *buf); | |
264 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, | |
265 | const char *buf, size_t count); | |
266 | static DEVICE_ATTR_RW(textid); | |
267 | ||
268 | static ssize_t remaining_steps_show(struct device *dev, | |
269 | struct device_attribute *attr, char *buf); | |
270 | static ssize_t remaining_steps_store(struct device *dev, | |
271 | struct device_attribute *attr, const char *buf, size_t count); | |
272 | static DEVICE_ATTR_RW(remaining_steps); | |
273 | ||
18b87ed1 BR |
274 | static ssize_t chipsetready_store(struct device *dev, |
275 | struct device_attribute *attr, const char *buf, size_t count); | |
276 | static DEVICE_ATTR_WO(chipsetready); | |
277 | ||
e56fa7cd BR |
278 | static ssize_t devicedisabled_store(struct device *dev, |
279 | struct device_attribute *attr, const char *buf, size_t count); | |
280 | static DEVICE_ATTR_WO(devicedisabled); | |
281 | ||
282 | static ssize_t deviceenabled_store(struct device *dev, | |
283 | struct device_attribute *attr, const char *buf, size_t count); | |
284 | static DEVICE_ATTR_WO(deviceenabled); | |
285 | ||
19f6634f BR |
286 | static struct attribute *visorchipset_install_attrs[] = { |
287 | &dev_attr_toolaction.attr, | |
54b31229 | 288 | &dev_attr_boottotool.attr, |
422af17c BR |
289 | &dev_attr_error.attr, |
290 | &dev_attr_textid.attr, | |
291 | &dev_attr_remaining_steps.attr, | |
19f6634f BR |
292 | NULL |
293 | }; | |
294 | ||
295 | static struct attribute_group visorchipset_install_group = { | |
296 | .name = "install", | |
297 | .attrs = visorchipset_install_attrs | |
298 | }; | |
299 | ||
18b87ed1 BR |
300 | static struct attribute *visorchipset_guest_attrs[] = { |
301 | &dev_attr_chipsetready.attr, | |
302 | NULL | |
303 | }; | |
304 | ||
305 | static struct attribute_group visorchipset_guest_group = { | |
306 | .name = "guest", | |
307 | .attrs = visorchipset_guest_attrs | |
308 | }; | |
309 | ||
e56fa7cd BR |
310 | static struct attribute *visorchipset_parahotplug_attrs[] = { |
311 | &dev_attr_devicedisabled.attr, | |
312 | &dev_attr_deviceenabled.attr, | |
313 | NULL | |
314 | }; | |
315 | ||
316 | static struct attribute_group visorchipset_parahotplug_group = { | |
317 | .name = "parahotplug", | |
318 | .attrs = visorchipset_parahotplug_attrs | |
319 | }; | |
320 | ||
19f6634f BR |
321 | static const struct attribute_group *visorchipset_dev_groups[] = { |
322 | &visorchipset_install_group, | |
18b87ed1 | 323 | &visorchipset_guest_group, |
e56fa7cd | 324 | &visorchipset_parahotplug_group, |
19f6634f BR |
325 | NULL |
326 | }; | |
327 | ||
12e364b9 KC |
328 | /* /sys/devices/platform/visorchipset */ |
329 | static struct platform_device Visorchipset_platform_device = { | |
330 | .name = "visorchipset", | |
331 | .id = -1, | |
19f6634f | 332 | .dev.groups = visorchipset_dev_groups, |
12e364b9 KC |
333 | }; |
334 | ||
335 | /* Function prototypes */ | |
98d7b594 BR |
336 | static void controlvm_respond(struct controlvm_message_header *msgHdr, |
337 | int response); | |
338 | static void controlvm_respond_chipset_init( | |
339 | struct controlvm_message_header *msgHdr, int response, | |
340 | enum ultra_chipset_feature features); | |
341 | static void controlvm_respond_physdev_changestate( | |
342 | struct controlvm_message_header *msgHdr, int response, | |
343 | struct spar_segment_state state); | |
12e364b9 | 344 | |
d746cb55 VB |
345 | static ssize_t toolaction_show(struct device *dev, |
346 | struct device_attribute *attr, | |
347 | char *buf) | |
19f6634f | 348 | { |
66e24b76 | 349 | u8 toolAction; |
19f6634f | 350 | |
c3d9a224 | 351 | visorchannel_read(controlvm_channel, |
d19642f6 BR |
352 | offsetof(struct spar_controlvm_channel_protocol, |
353 | tool_action), &toolAction, sizeof(u8)); | |
19f6634f BR |
354 | return scnprintf(buf, PAGE_SIZE, "%u\n", toolAction); |
355 | } | |
356 | ||
d746cb55 VB |
357 | static ssize_t toolaction_store(struct device *dev, |
358 | struct device_attribute *attr, | |
359 | const char *buf, size_t count) | |
19f6634f | 360 | { |
66e24b76 BR |
361 | u8 toolAction; |
362 | int ret; | |
19f6634f | 363 | |
66e24b76 BR |
364 | if (kstrtou8(buf, 10, &toolAction) != 0) |
365 | return -EINVAL; | |
366 | ||
c3d9a224 | 367 | ret = visorchannel_write(controlvm_channel, |
d19642f6 | 368 | offsetof(struct spar_controlvm_channel_protocol, tool_action), |
66e24b76 BR |
369 | &toolAction, sizeof(u8)); |
370 | ||
371 | if (ret) | |
372 | return ret; | |
e22a4a0f | 373 | return count; |
19f6634f BR |
374 | } |
375 | ||
d746cb55 VB |
376 | static ssize_t boottotool_show(struct device *dev, |
377 | struct device_attribute *attr, | |
378 | char *buf) | |
54b31229 | 379 | { |
755e2ecc | 380 | struct efi_spar_indication efiSparIndication; |
54b31229 | 381 | |
c3d9a224 | 382 | visorchannel_read(controlvm_channel, |
d19642f6 BR |
383 | offsetof(struct spar_controlvm_channel_protocol, |
384 | efi_spar_ind), &efiSparIndication, | |
755e2ecc | 385 | sizeof(struct efi_spar_indication)); |
54b31229 | 386 | return scnprintf(buf, PAGE_SIZE, "%u\n", |
2450301a | 387 | efiSparIndication.boot_to_tool); |
54b31229 BR |
388 | } |
389 | ||
d746cb55 VB |
390 | static ssize_t boottotool_store(struct device *dev, |
391 | struct device_attribute *attr, | |
392 | const char *buf, size_t count) | |
54b31229 | 393 | { |
66e24b76 | 394 | int val, ret; |
755e2ecc | 395 | struct efi_spar_indication efiSparIndication; |
54b31229 | 396 | |
66e24b76 BR |
397 | if (kstrtoint(buf, 10, &val) != 0) |
398 | return -EINVAL; | |
399 | ||
2450301a | 400 | efiSparIndication.boot_to_tool = val; |
c3d9a224 | 401 | ret = visorchannel_write(controlvm_channel, |
d19642f6 BR |
402 | offsetof(struct spar_controlvm_channel_protocol, |
403 | efi_spar_ind), | |
54b31229 | 404 | &(efiSparIndication), |
755e2ecc | 405 | sizeof(struct efi_spar_indication)); |
66e24b76 BR |
406 | |
407 | if (ret) | |
408 | return ret; | |
e22a4a0f | 409 | return count; |
54b31229 | 410 | } |
422af17c BR |
411 | |
412 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, | |
413 | char *buf) | |
414 | { | |
415 | u32 error; | |
416 | ||
c3d9a224 | 417 | visorchannel_read(controlvm_channel, offsetof( |
d19642f6 | 418 | struct spar_controlvm_channel_protocol, installation_error), |
422af17c BR |
419 | &error, sizeof(u32)); |
420 | return scnprintf(buf, PAGE_SIZE, "%i\n", error); | |
421 | } | |
422 | ||
423 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, | |
424 | const char *buf, size_t count) | |
425 | { | |
426 | u32 error; | |
66e24b76 | 427 | int ret; |
422af17c | 428 | |
66e24b76 BR |
429 | if (kstrtou32(buf, 10, &error) != 0) |
430 | return -EINVAL; | |
431 | ||
c3d9a224 | 432 | ret = visorchannel_write(controlvm_channel, |
d19642f6 BR |
433 | offsetof(struct spar_controlvm_channel_protocol, |
434 | installation_error), | |
66e24b76 BR |
435 | &error, sizeof(u32)); |
436 | if (ret) | |
437 | return ret; | |
e22a4a0f | 438 | return count; |
422af17c BR |
439 | } |
440 | ||
441 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, | |
442 | char *buf) | |
443 | { | |
444 | u32 textId; | |
445 | ||
c3d9a224 | 446 | visorchannel_read(controlvm_channel, offsetof( |
d19642f6 | 447 | struct spar_controlvm_channel_protocol, installation_text_id), |
422af17c BR |
448 | &textId, sizeof(u32)); |
449 | return scnprintf(buf, PAGE_SIZE, "%i\n", textId); | |
450 | } | |
451 | ||
452 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, | |
453 | const char *buf, size_t count) | |
454 | { | |
455 | u32 textId; | |
66e24b76 | 456 | int ret; |
422af17c | 457 | |
66e24b76 BR |
458 | if (kstrtou32(buf, 10, &textId) != 0) |
459 | return -EINVAL; | |
460 | ||
c3d9a224 | 461 | ret = visorchannel_write(controlvm_channel, |
d19642f6 BR |
462 | offsetof(struct spar_controlvm_channel_protocol, |
463 | installation_text_id), | |
66e24b76 BR |
464 | &textId, sizeof(u32)); |
465 | if (ret) | |
466 | return ret; | |
e22a4a0f | 467 | return count; |
422af17c BR |
468 | } |
469 | ||
422af17c BR |
470 | static ssize_t remaining_steps_show(struct device *dev, |
471 | struct device_attribute *attr, char *buf) | |
472 | { | |
473 | u16 remainingSteps; | |
474 | ||
c3d9a224 | 475 | visorchannel_read(controlvm_channel, |
d19642f6 BR |
476 | offsetof(struct spar_controlvm_channel_protocol, |
477 | installation_remaining_steps), | |
422af17c BR |
478 | &remainingSteps, |
479 | sizeof(u16)); | |
480 | return scnprintf(buf, PAGE_SIZE, "%hu\n", remainingSteps); | |
481 | } | |
482 | ||
483 | static ssize_t remaining_steps_store(struct device *dev, | |
484 | struct device_attribute *attr, const char *buf, size_t count) | |
485 | { | |
486 | u16 remainingSteps; | |
66e24b76 | 487 | int ret; |
422af17c | 488 | |
66e24b76 BR |
489 | if (kstrtou16(buf, 10, &remainingSteps) != 0) |
490 | return -EINVAL; | |
491 | ||
c3d9a224 | 492 | ret = visorchannel_write(controlvm_channel, |
d19642f6 BR |
493 | offsetof(struct spar_controlvm_channel_protocol, |
494 | installation_remaining_steps), | |
66e24b76 BR |
495 | &remainingSteps, sizeof(u16)); |
496 | if (ret) | |
497 | return ret; | |
e22a4a0f | 498 | return count; |
422af17c BR |
499 | } |
500 | ||
12e364b9 | 501 | static void |
9b989a98 | 502 | bus_info_clear(void *v) |
12e364b9 | 503 | { |
33192fa1 | 504 | struct visorchipset_bus_info *p = (struct visorchipset_bus_info *) (v); |
12e364b9 | 505 | |
12e364b9 KC |
506 | kfree(p->name); |
507 | p->name = NULL; | |
508 | ||
509 | kfree(p->description); | |
510 | p->description = NULL; | |
511 | ||
512 | p->state.created = 0; | |
33192fa1 | 513 | memset(p, 0, sizeof(struct visorchipset_bus_info)); |
12e364b9 KC |
514 | } |
515 | ||
516 | static void | |
9b989a98 | 517 | dev_info_clear(void *v) |
12e364b9 | 518 | { |
246e0cd0 BR |
519 | struct visorchipset_device_info *p = |
520 | (struct visorchipset_device_info *)(v); | |
26eb2c0c | 521 | |
12e364b9 | 522 | p->state.created = 0; |
246e0cd0 | 523 | memset(p, 0, sizeof(struct visorchipset_device_info)); |
12e364b9 KC |
524 | } |
525 | ||
c242233e | 526 | static u8 |
12e364b9 KC |
527 | check_chipset_events(void) |
528 | { | |
529 | int i; | |
c242233e | 530 | u8 send_msg = 1; |
12e364b9 KC |
531 | /* Check events to determine if response should be sent */ |
532 | for (i = 0; i < MAX_CHIPSET_EVENTS; i++) | |
533 | send_msg &= chipset_events[i]; | |
534 | return send_msg; | |
535 | } | |
536 | ||
537 | static void | |
538 | clear_chipset_events(void) | |
539 | { | |
540 | int i; | |
541 | /* Clear chipset_events */ | |
542 | for (i = 0; i < MAX_CHIPSET_EVENTS; i++) | |
543 | chipset_events[i] = 0; | |
544 | } | |
545 | ||
546 | void | |
fe90d892 BR |
547 | visorchipset_register_busdev_server( |
548 | struct visorchipset_busdev_notifiers *notifiers, | |
929aa8ae | 549 | struct visorchipset_busdev_responders *responders, |
1e7a59c1 | 550 | struct ultra_vbus_deviceinfo *driver_info) |
12e364b9 | 551 | { |
8f1947ac | 552 | down(¬ifier_lock); |
38f736e9 | 553 | if (!notifiers) { |
12e364b9 KC |
554 | memset(&BusDev_Server_Notifiers, 0, |
555 | sizeof(BusDev_Server_Notifiers)); | |
556 | serverregistered = 0; /* clear flag */ | |
557 | } else { | |
558 | BusDev_Server_Notifiers = *notifiers; | |
559 | serverregistered = 1; /* set flag */ | |
560 | } | |
561 | if (responders) | |
562 | *responders = BusDev_Responders; | |
1e7a59c1 BR |
563 | if (driver_info) |
564 | bus_device_info_init(driver_info, "chipset", "visorchipset", | |
836bee9e | 565 | VERSION, NULL); |
12e364b9 | 566 | |
8f1947ac | 567 | up(¬ifier_lock); |
12e364b9 KC |
568 | } |
569 | EXPORT_SYMBOL_GPL(visorchipset_register_busdev_server); | |
570 | ||
571 | void | |
fe90d892 BR |
572 | visorchipset_register_busdev_client( |
573 | struct visorchipset_busdev_notifiers *notifiers, | |
929aa8ae | 574 | struct visorchipset_busdev_responders *responders, |
43fce019 | 575 | struct ultra_vbus_deviceinfo *driver_info) |
12e364b9 | 576 | { |
8f1947ac | 577 | down(¬ifier_lock); |
38f736e9 | 578 | if (!notifiers) { |
12e364b9 KC |
579 | memset(&BusDev_Client_Notifiers, 0, |
580 | sizeof(BusDev_Client_Notifiers)); | |
581 | clientregistered = 0; /* clear flag */ | |
582 | } else { | |
583 | BusDev_Client_Notifiers = *notifiers; | |
584 | clientregistered = 1; /* set flag */ | |
585 | } | |
586 | if (responders) | |
587 | *responders = BusDev_Responders; | |
43fce019 BR |
588 | if (driver_info) |
589 | bus_device_info_init(driver_info, "chipset(bolts)", | |
590 | "visorchipset", VERSION, NULL); | |
8f1947ac | 591 | up(¬ifier_lock); |
12e364b9 KC |
592 | } |
593 | EXPORT_SYMBOL_GPL(visorchipset_register_busdev_client); | |
594 | ||
595 | static void | |
596 | cleanup_controlvm_structures(void) | |
597 | { | |
33192fa1 | 598 | struct visorchipset_bus_info *bi, *tmp_bi; |
246e0cd0 | 599 | struct visorchipset_device_info *di, *tmp_di; |
12e364b9 | 600 | |
1390b88c | 601 | list_for_each_entry_safe(bi, tmp_bi, &bus_info_list, entry) { |
9b989a98 | 602 | bus_info_clear(bi); |
12e364b9 KC |
603 | list_del(&bi->entry); |
604 | kfree(bi); | |
605 | } | |
606 | ||
1390b88c | 607 | list_for_each_entry_safe(di, tmp_di, &dev_info_list, entry) { |
9b989a98 | 608 | dev_info_clear(di); |
12e364b9 KC |
609 | list_del(&di->entry); |
610 | kfree(di); | |
611 | } | |
612 | } | |
613 | ||
614 | static void | |
3ab47701 | 615 | chipset_init(struct controlvm_message *inmsg) |
12e364b9 KC |
616 | { |
617 | static int chipset_inited; | |
b9b141e8 | 618 | enum ultra_chipset_feature features = 0; |
12e364b9 KC |
619 | int rc = CONTROLVM_RESP_SUCCESS; |
620 | ||
621 | POSTCODE_LINUX_2(CHIPSET_INIT_ENTRY_PC, POSTCODE_SEVERITY_INFO); | |
622 | if (chipset_inited) { | |
22ad57ba | 623 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
e3199b2e | 624 | goto cleanup; |
12e364b9 KC |
625 | } |
626 | chipset_inited = 1; | |
627 | POSTCODE_LINUX_2(CHIPSET_INIT_EXIT_PC, POSTCODE_SEVERITY_INFO); | |
628 | ||
629 | /* Set features to indicate we support parahotplug (if Command | |
630 | * also supports it). */ | |
631 | features = | |
2ea5117b | 632 | inmsg->cmd.init_chipset. |
12e364b9 KC |
633 | features & ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG; |
634 | ||
635 | /* Set the "reply" bit so Command knows this is a | |
636 | * features-aware driver. */ | |
637 | features |= ULTRA_CHIPSET_FEATURE_REPLY; | |
638 | ||
e3199b2e | 639 | cleanup: |
12e364b9 KC |
640 | if (rc < 0) |
641 | cleanup_controlvm_structures(); | |
98d7b594 | 642 | if (inmsg->hdr.flags.response_expected) |
12e364b9 KC |
643 | controlvm_respond_chipset_init(&inmsg->hdr, rc, features); |
644 | } | |
645 | ||
646 | static void | |
3ab47701 | 647 | controlvm_init_response(struct controlvm_message *msg, |
98d7b594 | 648 | struct controlvm_message_header *msgHdr, int response) |
12e364b9 | 649 | { |
3ab47701 | 650 | memset(msg, 0, sizeof(struct controlvm_message)); |
98d7b594 BR |
651 | memcpy(&msg->hdr, msgHdr, sizeof(struct controlvm_message_header)); |
652 | msg->hdr.payload_bytes = 0; | |
653 | msg->hdr.payload_vm_offset = 0; | |
654 | msg->hdr.payload_max_bytes = 0; | |
12e364b9 | 655 | if (response < 0) { |
98d7b594 BR |
656 | msg->hdr.flags.failed = 1; |
657 | msg->hdr.completion_status = (u32) (-response); | |
12e364b9 KC |
658 | } |
659 | } | |
660 | ||
661 | static void | |
98d7b594 | 662 | controlvm_respond(struct controlvm_message_header *msgHdr, int response) |
12e364b9 | 663 | { |
3ab47701 | 664 | struct controlvm_message outmsg; |
26eb2c0c | 665 | |
12e364b9 KC |
666 | controlvm_init_response(&outmsg, msgHdr, response); |
667 | /* For DiagPool channel DEVICE_CHANGESTATE, we need to send | |
668 | * back the deviceChangeState structure in the packet. */ | |
0639ba67 BR |
669 | if (msgHdr->id == CONTROLVM_DEVICE_CHANGESTATE && |
670 | g_devicechangestate_packet.device_change_state.bus_no == | |
671 | g_diagpool_bus_no && | |
672 | g_devicechangestate_packet.device_change_state.dev_no == | |
83d48905 | 673 | g_diagpool_dev_no) |
4f44b72d | 674 | outmsg.cmd = g_devicechangestate_packet; |
2098dbd1 | 675 | if (outmsg.hdr.flags.test_message == 1) |
12e364b9 | 676 | return; |
2098dbd1 | 677 | |
c3d9a224 | 678 | if (!visorchannel_signalinsert(controlvm_channel, |
12e364b9 | 679 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { |
12e364b9 KC |
680 | return; |
681 | } | |
682 | } | |
683 | ||
684 | static void | |
98d7b594 BR |
685 | controlvm_respond_chipset_init(struct controlvm_message_header *msgHdr, |
686 | int response, | |
b9b141e8 | 687 | enum ultra_chipset_feature features) |
12e364b9 | 688 | { |
3ab47701 | 689 | struct controlvm_message outmsg; |
26eb2c0c | 690 | |
12e364b9 | 691 | controlvm_init_response(&outmsg, msgHdr, response); |
2ea5117b | 692 | outmsg.cmd.init_chipset.features = features; |
c3d9a224 | 693 | if (!visorchannel_signalinsert(controlvm_channel, |
12e364b9 | 694 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { |
12e364b9 KC |
695 | return; |
696 | } | |
697 | } | |
698 | ||
98d7b594 BR |
699 | static void controlvm_respond_physdev_changestate( |
700 | struct controlvm_message_header *msgHdr, int response, | |
701 | struct spar_segment_state state) | |
12e364b9 | 702 | { |
3ab47701 | 703 | struct controlvm_message outmsg; |
26eb2c0c | 704 | |
12e364b9 | 705 | controlvm_init_response(&outmsg, msgHdr, response); |
2ea5117b BR |
706 | outmsg.cmd.device_change_state.state = state; |
707 | outmsg.cmd.device_change_state.flags.phys_device = 1; | |
c3d9a224 | 708 | if (!visorchannel_signalinsert(controlvm_channel, |
12e364b9 | 709 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { |
12e364b9 KC |
710 | return; |
711 | } | |
712 | } | |
713 | ||
714 | void | |
2c683cde BR |
715 | visorchipset_save_message(struct controlvm_message *msg, |
716 | enum crash_obj_type type) | |
12e364b9 | 717 | { |
4577225d BR |
718 | u32 crash_msg_offset; |
719 | u16 crash_msg_count; | |
12e364b9 KC |
720 | |
721 | /* get saved message count */ | |
c3d9a224 | 722 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
723 | offsetof(struct spar_controlvm_channel_protocol, |
724 | saved_crash_message_count), | |
4577225d | 725 | &crash_msg_count, sizeof(u16)) < 0) { |
12e364b9 KC |
726 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
727 | POSTCODE_SEVERITY_ERR); | |
728 | return; | |
729 | } | |
730 | ||
4577225d | 731 | if (crash_msg_count != CONTROLVM_CRASHMSG_MAX) { |
12e364b9 | 732 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, |
4577225d | 733 | crash_msg_count, |
12e364b9 KC |
734 | POSTCODE_SEVERITY_ERR); |
735 | return; | |
736 | } | |
737 | ||
738 | /* get saved crash message offset */ | |
c3d9a224 | 739 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
740 | offsetof(struct spar_controlvm_channel_protocol, |
741 | saved_crash_message_offset), | |
4577225d | 742 | &crash_msg_offset, sizeof(u32)) < 0) { |
12e364b9 KC |
743 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
744 | POSTCODE_SEVERITY_ERR); | |
745 | return; | |
746 | } | |
747 | ||
2c683cde | 748 | if (type == CRASH_BUS) { |
c3d9a224 | 749 | if (visorchannel_write(controlvm_channel, |
4577225d | 750 | crash_msg_offset, |
3ab47701 BR |
751 | msg, |
752 | sizeof(struct controlvm_message)) < 0) { | |
12e364b9 KC |
753 | POSTCODE_LINUX_2(SAVE_MSG_BUS_FAILURE_PC, |
754 | POSTCODE_SEVERITY_ERR); | |
755 | return; | |
756 | } | |
757 | } else { | |
c3d9a224 | 758 | if (visorchannel_write(controlvm_channel, |
4577225d | 759 | crash_msg_offset + |
3ab47701 BR |
760 | sizeof(struct controlvm_message), msg, |
761 | sizeof(struct controlvm_message)) < 0) { | |
12e364b9 KC |
762 | POSTCODE_LINUX_2(SAVE_MSG_DEV_FAILURE_PC, |
763 | POSTCODE_SEVERITY_ERR); | |
764 | return; | |
765 | } | |
766 | } | |
767 | } | |
768 | EXPORT_SYMBOL_GPL(visorchipset_save_message); | |
769 | ||
770 | static void | |
fbb31f48 | 771 | bus_responder(enum controlvm_id cmd_id, ulong bus_no, int response) |
12e364b9 | 772 | { |
33192fa1 | 773 | struct visorchipset_bus_info *p = NULL; |
12e364b9 KC |
774 | BOOL need_clear = FALSE; |
775 | ||
fbb31f48 | 776 | p = findbus(&bus_info_list, bus_no); |
0aca7844 | 777 | if (!p) |
12e364b9 | 778 | return; |
0aca7844 | 779 | |
12e364b9 | 780 | if (response < 0) { |
fbb31f48 | 781 | if ((cmd_id == CONTROLVM_BUS_CREATE) && |
12e364b9 KC |
782 | (response != (-CONTROLVM_RESP_ERROR_ALREADY_DONE))) |
783 | /* undo the row we just created... */ | |
fbb31f48 | 784 | delbusdevices(&dev_info_list, bus_no); |
12e364b9 | 785 | } else { |
fbb31f48 | 786 | if (cmd_id == CONTROLVM_BUS_CREATE) |
12e364b9 | 787 | p->state.created = 1; |
fbb31f48 | 788 | if (cmd_id == CONTROLVM_BUS_DESTROY) |
12e364b9 KC |
789 | need_clear = TRUE; |
790 | } | |
791 | ||
0aca7844 | 792 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) |
12e364b9 | 793 | return; /* no controlvm response needed */ |
fbb31f48 | 794 | if (p->pending_msg_hdr.id != (u32) cmd_id) |
12e364b9 | 795 | return; |
33192fa1 BR |
796 | controlvm_respond(&p->pending_msg_hdr, response); |
797 | p->pending_msg_hdr.id = CONTROLVM_INVALID; | |
12e364b9 | 798 | if (need_clear) { |
9b989a98 | 799 | bus_info_clear(p); |
fbb31f48 | 800 | delbusdevices(&dev_info_list, bus_no); |
12e364b9 KC |
801 | } |
802 | } | |
803 | ||
804 | static void | |
fbb31f48 BR |
805 | device_changestate_responder(enum controlvm_id cmd_id, |
806 | ulong bus_no, ulong dev_no, int response, | |
807 | struct spar_segment_state response_state) | |
12e364b9 | 808 | { |
246e0cd0 | 809 | struct visorchipset_device_info *p = NULL; |
3ab47701 | 810 | struct controlvm_message outmsg; |
12e364b9 | 811 | |
fbb31f48 | 812 | p = finddevice(&dev_info_list, bus_no, dev_no); |
0aca7844 | 813 | if (!p) |
12e364b9 | 814 | return; |
0aca7844 | 815 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) |
12e364b9 | 816 | return; /* no controlvm response needed */ |
fbb31f48 | 817 | if (p->pending_msg_hdr.id != cmd_id) |
12e364b9 | 818 | return; |
12e364b9 | 819 | |
246e0cd0 | 820 | controlvm_init_response(&outmsg, &p->pending_msg_hdr, response); |
12e364b9 | 821 | |
fbb31f48 BR |
822 | outmsg.cmd.device_change_state.bus_no = bus_no; |
823 | outmsg.cmd.device_change_state.dev_no = dev_no; | |
824 | outmsg.cmd.device_change_state.state = response_state; | |
12e364b9 | 825 | |
c3d9a224 | 826 | if (!visorchannel_signalinsert(controlvm_channel, |
0aca7844 | 827 | CONTROLVM_QUEUE_REQUEST, &outmsg)) |
12e364b9 | 828 | return; |
12e364b9 | 829 | |
246e0cd0 | 830 | p->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 KC |
831 | } |
832 | ||
833 | static void | |
fbb31f48 | 834 | device_responder(enum controlvm_id cmd_id, ulong bus_no, ulong dev_no, |
53bebb13 | 835 | int response) |
12e364b9 | 836 | { |
246e0cd0 | 837 | struct visorchipset_device_info *p = NULL; |
12e364b9 KC |
838 | BOOL need_clear = FALSE; |
839 | ||
fbb31f48 | 840 | p = finddevice(&dev_info_list, bus_no, dev_no); |
0aca7844 | 841 | if (!p) |
12e364b9 | 842 | return; |
12e364b9 | 843 | if (response >= 0) { |
fbb31f48 | 844 | if (cmd_id == CONTROLVM_DEVICE_CREATE) |
12e364b9 | 845 | p->state.created = 1; |
fbb31f48 | 846 | if (cmd_id == CONTROLVM_DEVICE_DESTROY) |
12e364b9 KC |
847 | need_clear = TRUE; |
848 | } | |
849 | ||
0aca7844 | 850 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) |
12e364b9 | 851 | return; /* no controlvm response needed */ |
0aca7844 | 852 | |
fbb31f48 | 853 | if (p->pending_msg_hdr.id != (u32) cmd_id) |
12e364b9 | 854 | return; |
0aca7844 | 855 | |
246e0cd0 BR |
856 | controlvm_respond(&p->pending_msg_hdr, response); |
857 | p->pending_msg_hdr.id = CONTROLVM_INVALID; | |
12e364b9 | 858 | if (need_clear) |
9b989a98 | 859 | dev_info_clear(p); |
12e364b9 KC |
860 | } |
861 | ||
862 | static void | |
2836c6a8 BR |
863 | bus_epilog(u32 bus_no, |
864 | u32 cmd, struct controlvm_message_header *msg_hdr, | |
865 | int response, BOOL need_response) | |
12e364b9 KC |
866 | { |
867 | BOOL notified = FALSE; | |
868 | ||
2836c6a8 BR |
869 | struct visorchipset_bus_info *bus_info = findbus(&bus_info_list, |
870 | bus_no); | |
12e364b9 | 871 | |
2836c6a8 | 872 | if (!bus_info) |
12e364b9 | 873 | return; |
0aca7844 | 874 | |
2836c6a8 BR |
875 | if (need_response) { |
876 | memcpy(&bus_info->pending_msg_hdr, msg_hdr, | |
98d7b594 | 877 | sizeof(struct controlvm_message_header)); |
12e364b9 | 878 | } else |
2836c6a8 | 879 | bus_info->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 | 880 | |
8f1947ac | 881 | down(¬ifier_lock); |
12e364b9 KC |
882 | if (response == CONTROLVM_RESP_SUCCESS) { |
883 | switch (cmd) { | |
884 | case CONTROLVM_BUS_CREATE: | |
885 | /* We can't tell from the bus_create | |
886 | * information which of our 2 bus flavors the | |
887 | * devices on this bus will ultimately end up. | |
888 | * FORTUNATELY, it turns out it is harmless to | |
889 | * send the bus_create to both of them. We can | |
890 | * narrow things down a little bit, though, | |
891 | * because we know: - BusDev_Server can handle | |
892 | * either server or client devices | |
893 | * - BusDev_Client can handle ONLY client | |
894 | * devices */ | |
895 | if (BusDev_Server_Notifiers.bus_create) { | |
2836c6a8 | 896 | (*BusDev_Server_Notifiers.bus_create) (bus_no); |
12e364b9 KC |
897 | notified = TRUE; |
898 | } | |
2836c6a8 | 899 | if ((!bus_info->flags.server) /*client */ && |
12e364b9 | 900 | BusDev_Client_Notifiers.bus_create) { |
2836c6a8 | 901 | (*BusDev_Client_Notifiers.bus_create) (bus_no); |
12e364b9 KC |
902 | notified = TRUE; |
903 | } | |
904 | break; | |
905 | case CONTROLVM_BUS_DESTROY: | |
906 | if (BusDev_Server_Notifiers.bus_destroy) { | |
2836c6a8 | 907 | (*BusDev_Server_Notifiers.bus_destroy) (bus_no); |
12e364b9 KC |
908 | notified = TRUE; |
909 | } | |
2836c6a8 | 910 | if ((!bus_info->flags.server) /*client */ && |
12e364b9 | 911 | BusDev_Client_Notifiers.bus_destroy) { |
2836c6a8 | 912 | (*BusDev_Client_Notifiers.bus_destroy) (bus_no); |
12e364b9 KC |
913 | notified = TRUE; |
914 | } | |
915 | break; | |
916 | } | |
917 | } | |
918 | if (notified) | |
919 | /* The callback function just called above is responsible | |
929aa8ae | 920 | * for calling the appropriate visorchipset_busdev_responders |
12e364b9 KC |
921 | * function, which will call bus_responder() |
922 | */ | |
923 | ; | |
924 | else | |
2836c6a8 | 925 | bus_responder(cmd, bus_no, response); |
8f1947ac | 926 | up(¬ifier_lock); |
12e364b9 KC |
927 | } |
928 | ||
929 | static void | |
2836c6a8 BR |
930 | device_epilog(u32 bus_no, u32 dev_no, struct spar_segment_state state, u32 cmd, |
931 | struct controlvm_message_header *msg_hdr, int response, | |
932 | BOOL need_response, BOOL for_visorbus) | |
12e364b9 | 933 | { |
fe90d892 | 934 | struct visorchipset_busdev_notifiers *notifiers = NULL; |
12e364b9 KC |
935 | BOOL notified = FALSE; |
936 | ||
2836c6a8 BR |
937 | struct visorchipset_device_info *dev_info = |
938 | finddevice(&dev_info_list, bus_no, dev_no); | |
12e364b9 KC |
939 | char *envp[] = { |
940 | "SPARSP_DIAGPOOL_PAUSED_STATE = 1", | |
941 | NULL | |
942 | }; | |
943 | ||
2836c6a8 | 944 | if (!dev_info) |
12e364b9 | 945 | return; |
0aca7844 | 946 | |
12e364b9 KC |
947 | if (for_visorbus) |
948 | notifiers = &BusDev_Server_Notifiers; | |
949 | else | |
950 | notifiers = &BusDev_Client_Notifiers; | |
2836c6a8 BR |
951 | if (need_response) { |
952 | memcpy(&dev_info->pending_msg_hdr, msg_hdr, | |
98d7b594 | 953 | sizeof(struct controlvm_message_header)); |
12e364b9 | 954 | } else |
2836c6a8 | 955 | dev_info->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 | 956 | |
8f1947ac | 957 | down(¬ifier_lock); |
12e364b9 KC |
958 | if (response >= 0) { |
959 | switch (cmd) { | |
960 | case CONTROLVM_DEVICE_CREATE: | |
961 | if (notifiers->device_create) { | |
2836c6a8 | 962 | (*notifiers->device_create) (bus_no, dev_no); |
12e364b9 KC |
963 | notified = TRUE; |
964 | } | |
965 | break; | |
966 | case CONTROLVM_DEVICE_CHANGESTATE: | |
967 | /* ServerReady / ServerRunning / SegmentStateRunning */ | |
bd0d2dcc BR |
968 | if (state.alive == segment_state_running.alive && |
969 | state.operating == | |
970 | segment_state_running.operating) { | |
12e364b9 | 971 | if (notifiers->device_resume) { |
2836c6a8 BR |
972 | (*notifiers->device_resume) (bus_no, |
973 | dev_no); | |
12e364b9 KC |
974 | notified = TRUE; |
975 | } | |
976 | } | |
977 | /* ServerNotReady / ServerLost / SegmentStateStandby */ | |
bd0d2dcc | 978 | else if (state.alive == segment_state_standby.alive && |
3f833b54 | 979 | state.operating == |
bd0d2dcc | 980 | segment_state_standby.operating) { |
12e364b9 KC |
981 | /* technically this is standby case |
982 | * where server is lost | |
983 | */ | |
984 | if (notifiers->device_pause) { | |
2836c6a8 BR |
985 | (*notifiers->device_pause) (bus_no, |
986 | dev_no); | |
12e364b9 KC |
987 | notified = TRUE; |
988 | } | |
bd0d2dcc | 989 | } else if (state.alive == segment_state_paused.alive && |
3f833b54 | 990 | state.operating == |
bd0d2dcc | 991 | segment_state_paused.operating) { |
12e364b9 KC |
992 | /* this is lite pause where channel is |
993 | * still valid just 'pause' of it | |
994 | */ | |
2836c6a8 BR |
995 | if (bus_no == g_diagpool_bus_no && |
996 | dev_no == g_diagpool_dev_no) { | |
12e364b9 KC |
997 | /* this will trigger the |
998 | * diag_shutdown.sh script in | |
999 | * the visorchipset hotplug */ | |
1000 | kobject_uevent_env | |
1001 | (&Visorchipset_platform_device.dev. | |
1002 | kobj, KOBJ_ONLINE, envp); | |
1003 | } | |
1004 | } | |
1005 | break; | |
1006 | case CONTROLVM_DEVICE_DESTROY: | |
1007 | if (notifiers->device_destroy) { | |
2836c6a8 | 1008 | (*notifiers->device_destroy) (bus_no, dev_no); |
12e364b9 KC |
1009 | notified = TRUE; |
1010 | } | |
1011 | break; | |
1012 | } | |
1013 | } | |
1014 | if (notified) | |
1015 | /* The callback function just called above is responsible | |
929aa8ae | 1016 | * for calling the appropriate visorchipset_busdev_responders |
12e364b9 KC |
1017 | * function, which will call device_responder() |
1018 | */ | |
1019 | ; | |
1020 | else | |
2836c6a8 | 1021 | device_responder(cmd, bus_no, dev_no, response); |
8f1947ac | 1022 | up(¬ifier_lock); |
12e364b9 KC |
1023 | } |
1024 | ||
1025 | static void | |
3ab47701 | 1026 | bus_create(struct controlvm_message *inmsg) |
12e364b9 | 1027 | { |
2ea5117b BR |
1028 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1029 | ulong busNo = cmd->create_bus.bus_no; | |
12e364b9 | 1030 | int rc = CONTROLVM_RESP_SUCCESS; |
33192fa1 | 1031 | struct visorchipset_bus_info *pBusInfo = NULL; |
12e364b9 KC |
1032 | |
1033 | ||
1390b88c | 1034 | pBusInfo = findbus(&bus_info_list, busNo); |
12e364b9 | 1035 | if (pBusInfo && (pBusInfo->state.created == 1)) { |
12e364b9 KC |
1036 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo, |
1037 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1038 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
1039 | goto Away; | |
12e364b9 | 1040 | } |
33192fa1 | 1041 | pBusInfo = kzalloc(sizeof(struct visorchipset_bus_info), GFP_KERNEL); |
38f736e9 | 1042 | if (!pBusInfo) { |
12e364b9 KC |
1043 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo, |
1044 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1045 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
1046 | goto Away; | |
12e364b9 KC |
1047 | } |
1048 | ||
12e364b9 | 1049 | INIT_LIST_HEAD(&pBusInfo->entry); |
33192fa1 BR |
1050 | pBusInfo->bus_no = busNo; |
1051 | pBusInfo->dev_no = cmd->create_bus.dev_count; | |
12e364b9 KC |
1052 | |
1053 | POSTCODE_LINUX_3(BUS_CREATE_ENTRY_PC, busNo, POSTCODE_SEVERITY_INFO); | |
1054 | ||
98d7b594 | 1055 | if (inmsg->hdr.flags.test_message == 1) |
33192fa1 | 1056 | pBusInfo->chan_info.addr_type = ADDRTYPE_LOCALTEST; |
12e364b9 | 1057 | else |
33192fa1 | 1058 | pBusInfo->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL; |
12e364b9 | 1059 | |
98d7b594 | 1060 | pBusInfo->flags.server = inmsg->hdr.flags.server; |
33192fa1 BR |
1061 | pBusInfo->chan_info.channel_addr = cmd->create_bus.channel_addr; |
1062 | pBusInfo->chan_info.n_channel_bytes = cmd->create_bus.channel_bytes; | |
1063 | pBusInfo->chan_info.channel_type_uuid = | |
9b1caee7 | 1064 | cmd->create_bus.bus_data_type_uuid; |
33192fa1 | 1065 | pBusInfo->chan_info.channel_inst_uuid = cmd->create_bus.bus_inst_uuid; |
12e364b9 | 1066 | |
1390b88c | 1067 | list_add(&pBusInfo->entry, &bus_info_list); |
12e364b9 KC |
1068 | |
1069 | POSTCODE_LINUX_3(BUS_CREATE_EXIT_PC, busNo, POSTCODE_SEVERITY_INFO); | |
1070 | ||
1071 | Away: | |
1072 | bus_epilog(busNo, CONTROLVM_BUS_CREATE, &inmsg->hdr, | |
98d7b594 | 1073 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1074 | } |
1075 | ||
1076 | static void | |
3ab47701 | 1077 | bus_destroy(struct controlvm_message *inmsg) |
12e364b9 | 1078 | { |
2ea5117b BR |
1079 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1080 | ulong busNo = cmd->destroy_bus.bus_no; | |
33192fa1 | 1081 | struct visorchipset_bus_info *pBusInfo; |
12e364b9 KC |
1082 | int rc = CONTROLVM_RESP_SUCCESS; |
1083 | ||
1390b88c | 1084 | pBusInfo = findbus(&bus_info_list, busNo); |
12e364b9 | 1085 | if (!pBusInfo) { |
22ad57ba KC |
1086 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1087 | goto Away; | |
12e364b9 KC |
1088 | } |
1089 | if (pBusInfo->state.created == 0) { | |
22ad57ba KC |
1090 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
1091 | goto Away; | |
12e364b9 KC |
1092 | } |
1093 | ||
1094 | Away: | |
1095 | bus_epilog(busNo, CONTROLVM_BUS_DESTROY, &inmsg->hdr, | |
98d7b594 | 1096 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1097 | } |
1098 | ||
1099 | static void | |
317d9614 BR |
1100 | bus_configure(struct controlvm_message *inmsg, |
1101 | struct parser_context *parser_ctx) | |
12e364b9 | 1102 | { |
2ea5117b BR |
1103 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1104 | ulong busNo = cmd->configure_bus.bus_no; | |
33192fa1 | 1105 | struct visorchipset_bus_info *pBusInfo = NULL; |
12e364b9 KC |
1106 | int rc = CONTROLVM_RESP_SUCCESS; |
1107 | char s[99]; | |
1108 | ||
2ea5117b | 1109 | busNo = cmd->configure_bus.bus_no; |
12e364b9 KC |
1110 | POSTCODE_LINUX_3(BUS_CONFIGURE_ENTRY_PC, busNo, POSTCODE_SEVERITY_INFO); |
1111 | ||
1390b88c | 1112 | pBusInfo = findbus(&bus_info_list, busNo); |
12e364b9 | 1113 | if (!pBusInfo) { |
12e364b9 KC |
1114 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo, |
1115 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1116 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1117 | goto Away; | |
12e364b9 KC |
1118 | } |
1119 | if (pBusInfo->state.created == 0) { | |
12e364b9 KC |
1120 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo, |
1121 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1122 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1123 | goto Away; | |
12e364b9 KC |
1124 | } |
1125 | /* TBD - add this check to other commands also... */ | |
33192fa1 | 1126 | if (pBusInfo->pending_msg_hdr.id != CONTROLVM_INVALID) { |
12e364b9 KC |
1127 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo, |
1128 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1129 | rc = -CONTROLVM_RESP_ERROR_MESSAGE_ID_INVALID_FOR_CLIENT; |
1130 | goto Away; | |
12e364b9 KC |
1131 | } |
1132 | ||
33192fa1 BR |
1133 | pBusInfo->partition_handle = cmd->configure_bus.guest_handle; |
1134 | pBusInfo->partition_uuid = parser_id_get(parser_ctx); | |
12e364b9 KC |
1135 | parser_param_start(parser_ctx, PARSERSTRING_NAME); |
1136 | pBusInfo->name = parser_string_get(parser_ctx); | |
1137 | ||
33192fa1 | 1138 | visorchannel_uuid_id(&pBusInfo->partition_uuid, s); |
12e364b9 KC |
1139 | POSTCODE_LINUX_3(BUS_CONFIGURE_EXIT_PC, busNo, POSTCODE_SEVERITY_INFO); |
1140 | Away: | |
1141 | bus_epilog(busNo, CONTROLVM_BUS_CONFIGURE, &inmsg->hdr, | |
98d7b594 | 1142 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1143 | } |
1144 | ||
1145 | static void | |
3ab47701 | 1146 | my_device_create(struct controlvm_message *inmsg) |
12e364b9 | 1147 | { |
2ea5117b | 1148 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
f91b9262 BR |
1149 | ulong busNo = cmd->create_device.bus_no; |
1150 | ulong devNo = cmd->create_device.dev_no; | |
246e0cd0 | 1151 | struct visorchipset_device_info *pDevInfo = NULL; |
33192fa1 | 1152 | struct visorchipset_bus_info *pBusInfo = NULL; |
12e364b9 KC |
1153 | int rc = CONTROLVM_RESP_SUCCESS; |
1154 | ||
1390b88c | 1155 | pDevInfo = finddevice(&dev_info_list, busNo, devNo); |
12e364b9 | 1156 | if (pDevInfo && (pDevInfo->state.created == 1)) { |
12e364b9 KC |
1157 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, |
1158 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1159 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
1160 | goto Away; | |
12e364b9 | 1161 | } |
1390b88c | 1162 | pBusInfo = findbus(&bus_info_list, busNo); |
12e364b9 | 1163 | if (!pBusInfo) { |
12e364b9 KC |
1164 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, |
1165 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1166 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1167 | goto Away; | |
12e364b9 KC |
1168 | } |
1169 | if (pBusInfo->state.created == 0) { | |
12e364b9 KC |
1170 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, |
1171 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1172 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1173 | goto Away; | |
12e364b9 | 1174 | } |
246e0cd0 | 1175 | pDevInfo = kzalloc(sizeof(struct visorchipset_device_info), GFP_KERNEL); |
38f736e9 | 1176 | if (!pDevInfo) { |
12e364b9 KC |
1177 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, |
1178 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1179 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
1180 | goto Away; | |
12e364b9 | 1181 | } |
97a84f12 | 1182 | |
12e364b9 | 1183 | INIT_LIST_HEAD(&pDevInfo->entry); |
246e0cd0 BR |
1184 | pDevInfo->bus_no = busNo; |
1185 | pDevInfo->dev_no = devNo; | |
1186 | pDevInfo->dev_inst_uuid = cmd->create_device.dev_inst_uuid; | |
12e364b9 KC |
1187 | POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC, devNo, busNo, |
1188 | POSTCODE_SEVERITY_INFO); | |
1189 | ||
98d7b594 | 1190 | if (inmsg->hdr.flags.test_message == 1) |
246e0cd0 | 1191 | pDevInfo->chan_info.addr_type = ADDRTYPE_LOCALTEST; |
12e364b9 | 1192 | else |
246e0cd0 BR |
1193 | pDevInfo->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL; |
1194 | pDevInfo->chan_info.channel_addr = cmd->create_device.channel_addr; | |
1195 | pDevInfo->chan_info.n_channel_bytes = cmd->create_device.channel_bytes; | |
1196 | pDevInfo->chan_info.channel_type_uuid = | |
9b1caee7 | 1197 | cmd->create_device.data_type_uuid; |
246e0cd0 | 1198 | pDevInfo->chan_info.intr = cmd->create_device.intr; |
1390b88c | 1199 | list_add(&pDevInfo->entry, &dev_info_list); |
12e364b9 KC |
1200 | POSTCODE_LINUX_4(DEVICE_CREATE_EXIT_PC, devNo, busNo, |
1201 | POSTCODE_SEVERITY_INFO); | |
1202 | Away: | |
1203 | /* get the bus and devNo for DiagPool channel */ | |
930a021f SM |
1204 | if (pDevInfo && |
1205 | is_diagpool_channel(pDevInfo->chan_info.channel_type_uuid)) { | |
83d48905 BR |
1206 | g_diagpool_bus_no = busNo; |
1207 | g_diagpool_dev_no = devNo; | |
12e364b9 | 1208 | } |
bd0d2dcc | 1209 | device_epilog(busNo, devNo, segment_state_running, |
12e364b9 | 1210 | CONTROLVM_DEVICE_CREATE, &inmsg->hdr, rc, |
98d7b594 | 1211 | inmsg->hdr.flags.response_expected == 1, |
246e0cd0 | 1212 | FOR_VISORBUS(pDevInfo->chan_info.channel_type_uuid)); |
12e364b9 KC |
1213 | } |
1214 | ||
1215 | static void | |
3ab47701 | 1216 | my_device_changestate(struct controlvm_message *inmsg) |
12e364b9 | 1217 | { |
2ea5117b BR |
1218 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1219 | ulong busNo = cmd->device_change_state.bus_no; | |
1220 | ulong devNo = cmd->device_change_state.dev_no; | |
1221 | struct spar_segment_state state = cmd->device_change_state.state; | |
246e0cd0 | 1222 | struct visorchipset_device_info *pDevInfo = NULL; |
12e364b9 KC |
1223 | int rc = CONTROLVM_RESP_SUCCESS; |
1224 | ||
1390b88c | 1225 | pDevInfo = finddevice(&dev_info_list, busNo, devNo); |
12e364b9 | 1226 | if (!pDevInfo) { |
12e364b9 KC |
1227 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, devNo, busNo, |
1228 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1229 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
1230 | goto Away; | |
12e364b9 KC |
1231 | } |
1232 | if (pDevInfo->state.created == 0) { | |
12e364b9 KC |
1233 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, devNo, busNo, |
1234 | POSTCODE_SEVERITY_ERR); | |
22ad57ba | 1235 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
12e364b9 KC |
1236 | } |
1237 | Away: | |
1238 | if ((rc >= CONTROLVM_RESP_SUCCESS) && pDevInfo) | |
1239 | device_epilog(busNo, devNo, state, CONTROLVM_DEVICE_CHANGESTATE, | |
1240 | &inmsg->hdr, rc, | |
98d7b594 | 1241 | inmsg->hdr.flags.response_expected == 1, |
9b1caee7 | 1242 | FOR_VISORBUS( |
246e0cd0 | 1243 | pDevInfo->chan_info.channel_type_uuid)); |
12e364b9 KC |
1244 | } |
1245 | ||
1246 | static void | |
3ab47701 | 1247 | my_device_destroy(struct controlvm_message *inmsg) |
12e364b9 | 1248 | { |
2ea5117b BR |
1249 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1250 | ulong busNo = cmd->destroy_device.bus_no; | |
1251 | ulong devNo = cmd->destroy_device.dev_no; | |
246e0cd0 | 1252 | struct visorchipset_device_info *pDevInfo = NULL; |
12e364b9 KC |
1253 | int rc = CONTROLVM_RESP_SUCCESS; |
1254 | ||
1390b88c | 1255 | pDevInfo = finddevice(&dev_info_list, busNo, devNo); |
12e364b9 | 1256 | if (!pDevInfo) { |
22ad57ba KC |
1257 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
1258 | goto Away; | |
12e364b9 KC |
1259 | } |
1260 | if (pDevInfo->state.created == 0) { | |
22ad57ba | 1261 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
12e364b9 KC |
1262 | } |
1263 | ||
1264 | Away: | |
1265 | if ((rc >= CONTROLVM_RESP_SUCCESS) && pDevInfo) | |
bd0d2dcc | 1266 | device_epilog(busNo, devNo, segment_state_running, |
12e364b9 | 1267 | CONTROLVM_DEVICE_DESTROY, &inmsg->hdr, rc, |
98d7b594 | 1268 | inmsg->hdr.flags.response_expected == 1, |
9b1caee7 | 1269 | FOR_VISORBUS( |
246e0cd0 | 1270 | pDevInfo->chan_info.channel_type_uuid)); |
12e364b9 KC |
1271 | } |
1272 | ||
1273 | /* When provided with the physical address of the controlvm channel | |
1274 | * (phys_addr), the offset to the payload area we need to manage | |
1275 | * (offset), and the size of this payload area (bytes), fills in the | |
84b11dfd | 1276 | * controlvm_payload_info struct. Returns TRUE for success or FALSE |
12e364b9 KC |
1277 | * for failure. |
1278 | */ | |
1279 | static int | |
5fc0229a | 1280 | initialize_controlvm_payload_info(HOSTADDRESS phys_addr, u64 offset, u32 bytes, |
84b11dfd | 1281 | struct controlvm_payload_info *info) |
12e364b9 | 1282 | { |
c242233e | 1283 | u8 __iomem *payload = NULL; |
12e364b9 KC |
1284 | int rc = CONTROLVM_RESP_SUCCESS; |
1285 | ||
38f736e9 | 1286 | if (!info) { |
22ad57ba KC |
1287 | rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
1288 | goto Away; | |
12e364b9 | 1289 | } |
84b11dfd | 1290 | memset(info, 0, sizeof(struct controlvm_payload_info)); |
12e364b9 | 1291 | if ((offset == 0) || (bytes == 0)) { |
22ad57ba KC |
1292 | rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
1293 | goto Away; | |
12e364b9 KC |
1294 | } |
1295 | payload = ioremap_cache(phys_addr + offset, bytes); | |
38f736e9 | 1296 | if (!payload) { |
22ad57ba KC |
1297 | rc = -CONTROLVM_RESP_ERROR_IOREMAP_FAILED; |
1298 | goto Away; | |
12e364b9 KC |
1299 | } |
1300 | ||
1301 | info->offset = offset; | |
1302 | info->bytes = bytes; | |
1303 | info->ptr = payload; | |
12e364b9 KC |
1304 | |
1305 | Away: | |
1306 | if (rc < 0) { | |
1307 | if (payload != NULL) { | |
1308 | iounmap(payload); | |
1309 | payload = NULL; | |
1310 | } | |
1311 | } | |
1312 | return rc; | |
1313 | } | |
1314 | ||
1315 | static void | |
84b11dfd | 1316 | destroy_controlvm_payload_info(struct controlvm_payload_info *info) |
12e364b9 KC |
1317 | { |
1318 | if (info->ptr != NULL) { | |
1319 | iounmap(info->ptr); | |
1320 | info->ptr = NULL; | |
1321 | } | |
84b11dfd | 1322 | memset(info, 0, sizeof(struct controlvm_payload_info)); |
12e364b9 KC |
1323 | } |
1324 | ||
1325 | static void | |
1326 | initialize_controlvm_payload(void) | |
1327 | { | |
c3d9a224 | 1328 | HOSTADDRESS phys_addr = visorchannel_get_physaddr(controlvm_channel); |
5fc0229a | 1329 | u64 payloadOffset = 0; |
b3c55b13 | 1330 | u32 payloadBytes = 0; |
26eb2c0c | 1331 | |
c3d9a224 | 1332 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
1333 | offsetof(struct spar_controlvm_channel_protocol, |
1334 | request_payload_offset), | |
12e364b9 | 1335 | &payloadOffset, sizeof(payloadOffset)) < 0) { |
12e364b9 KC |
1336 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, |
1337 | POSTCODE_SEVERITY_ERR); | |
1338 | return; | |
1339 | } | |
c3d9a224 | 1340 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
1341 | offsetof(struct spar_controlvm_channel_protocol, |
1342 | request_payload_bytes), | |
12e364b9 | 1343 | &payloadBytes, sizeof(payloadBytes)) < 0) { |
12e364b9 KC |
1344 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, |
1345 | POSTCODE_SEVERITY_ERR); | |
1346 | return; | |
1347 | } | |
1348 | initialize_controlvm_payload_info(phys_addr, | |
1349 | payloadOffset, payloadBytes, | |
84982fbf | 1350 | &controlvm_payload_info); |
12e364b9 KC |
1351 | } |
1352 | ||
1353 | /* Send ACTION=online for DEVPATH=/sys/devices/platform/visorchipset. | |
1354 | * Returns CONTROLVM_RESP_xxx code. | |
1355 | */ | |
1356 | int | |
1357 | visorchipset_chipset_ready(void) | |
1358 | { | |
1359 | kobject_uevent(&Visorchipset_platform_device.dev.kobj, KOBJ_ONLINE); | |
1360 | return CONTROLVM_RESP_SUCCESS; | |
1361 | } | |
1362 | EXPORT_SYMBOL_GPL(visorchipset_chipset_ready); | |
1363 | ||
1364 | int | |
1365 | visorchipset_chipset_selftest(void) | |
1366 | { | |
1367 | char env_selftest[20]; | |
1368 | char *envp[] = { env_selftest, NULL }; | |
26eb2c0c | 1369 | |
12e364b9 KC |
1370 | sprintf(env_selftest, "SPARSP_SELFTEST=%d", 1); |
1371 | kobject_uevent_env(&Visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, | |
1372 | envp); | |
1373 | return CONTROLVM_RESP_SUCCESS; | |
1374 | } | |
1375 | EXPORT_SYMBOL_GPL(visorchipset_chipset_selftest); | |
1376 | ||
1377 | /* Send ACTION=offline for DEVPATH=/sys/devices/platform/visorchipset. | |
1378 | * Returns CONTROLVM_RESP_xxx code. | |
1379 | */ | |
1380 | int | |
1381 | visorchipset_chipset_notready(void) | |
1382 | { | |
1383 | kobject_uevent(&Visorchipset_platform_device.dev.kobj, KOBJ_OFFLINE); | |
1384 | return CONTROLVM_RESP_SUCCESS; | |
1385 | } | |
1386 | EXPORT_SYMBOL_GPL(visorchipset_chipset_notready); | |
1387 | ||
1388 | static void | |
98d7b594 | 1389 | chipset_ready(struct controlvm_message_header *msgHdr) |
12e364b9 KC |
1390 | { |
1391 | int rc = visorchipset_chipset_ready(); | |
26eb2c0c | 1392 | |
12e364b9 KC |
1393 | if (rc != CONTROLVM_RESP_SUCCESS) |
1394 | rc = -rc; | |
98d7b594 | 1395 | if (msgHdr->flags.response_expected && !visorchipset_holdchipsetready) |
12e364b9 | 1396 | controlvm_respond(msgHdr, rc); |
98d7b594 | 1397 | if (msgHdr->flags.response_expected && visorchipset_holdchipsetready) { |
12e364b9 KC |
1398 | /* Send CHIPSET_READY response when all modules have been loaded |
1399 | * and disks mounted for the partition | |
1400 | */ | |
da021f02 | 1401 | g_chipset_msg_hdr = *msgHdr; |
12e364b9 KC |
1402 | } |
1403 | } | |
1404 | ||
1405 | static void | |
98d7b594 | 1406 | chipset_selftest(struct controlvm_message_header *msgHdr) |
12e364b9 KC |
1407 | { |
1408 | int rc = visorchipset_chipset_selftest(); | |
26eb2c0c | 1409 | |
12e364b9 KC |
1410 | if (rc != CONTROLVM_RESP_SUCCESS) |
1411 | rc = -rc; | |
98d7b594 | 1412 | if (msgHdr->flags.response_expected) |
12e364b9 KC |
1413 | controlvm_respond(msgHdr, rc); |
1414 | } | |
1415 | ||
1416 | static void | |
98d7b594 | 1417 | chipset_notready(struct controlvm_message_header *msgHdr) |
12e364b9 KC |
1418 | { |
1419 | int rc = visorchipset_chipset_notready(); | |
26eb2c0c | 1420 | |
12e364b9 KC |
1421 | if (rc != CONTROLVM_RESP_SUCCESS) |
1422 | rc = -rc; | |
98d7b594 | 1423 | if (msgHdr->flags.response_expected) |
12e364b9 KC |
1424 | controlvm_respond(msgHdr, rc); |
1425 | } | |
1426 | ||
1427 | /* This is your "one-stop" shop for grabbing the next message from the | |
1428 | * CONTROLVM_QUEUE_EVENT queue in the controlvm channel. | |
1429 | */ | |
1430 | static BOOL | |
3ab47701 | 1431 | read_controlvm_event(struct controlvm_message *msg) |
12e364b9 | 1432 | { |
c3d9a224 | 1433 | if (visorchannel_signalremove(controlvm_channel, |
12e364b9 KC |
1434 | CONTROLVM_QUEUE_EVENT, msg)) { |
1435 | /* got a message */ | |
0aca7844 | 1436 | if (msg->hdr.flags.test_message == 1) |
12e364b9 | 1437 | return FALSE; |
e22a4a0f | 1438 | return TRUE; |
12e364b9 KC |
1439 | } |
1440 | return FALSE; | |
1441 | } | |
1442 | ||
1443 | /* | |
1444 | * The general parahotplug flow works as follows. The visorchipset | |
1445 | * driver receives a DEVICE_CHANGESTATE message from Command | |
1446 | * specifying a physical device to enable or disable. The CONTROLVM | |
1447 | * message handler calls parahotplug_process_message, which then adds | |
1448 | * the message to a global list and kicks off a udev event which | |
1449 | * causes a user level script to enable or disable the specified | |
1450 | * device. The udev script then writes to | |
1451 | * /proc/visorchipset/parahotplug, which causes parahotplug_proc_write | |
1452 | * to get called, at which point the appropriate CONTROLVM message is | |
1453 | * retrieved from the list and responded to. | |
1454 | */ | |
1455 | ||
1456 | #define PARAHOTPLUG_TIMEOUT_MS 2000 | |
1457 | ||
1458 | /* | |
1459 | * Generate unique int to match an outstanding CONTROLVM message with a | |
1460 | * udev script /proc response | |
1461 | */ | |
1462 | static int | |
1463 | parahotplug_next_id(void) | |
1464 | { | |
1465 | static atomic_t id = ATOMIC_INIT(0); | |
26eb2c0c | 1466 | |
12e364b9 KC |
1467 | return atomic_inc_return(&id); |
1468 | } | |
1469 | ||
1470 | /* | |
1471 | * Returns the time (in jiffies) when a CONTROLVM message on the list | |
1472 | * should expire -- PARAHOTPLUG_TIMEOUT_MS in the future | |
1473 | */ | |
1474 | static unsigned long | |
1475 | parahotplug_next_expiration(void) | |
1476 | { | |
2cc1a1b3 | 1477 | return jiffies + msecs_to_jiffies(PARAHOTPLUG_TIMEOUT_MS); |
12e364b9 KC |
1478 | } |
1479 | ||
1480 | /* | |
1481 | * Create a parahotplug_request, which is basically a wrapper for a | |
1482 | * CONTROLVM_MESSAGE that we can stick on a list | |
1483 | */ | |
1484 | static struct parahotplug_request * | |
3ab47701 | 1485 | parahotplug_request_create(struct controlvm_message *msg) |
12e364b9 | 1486 | { |
ea0dcfcf QL |
1487 | struct parahotplug_request *req; |
1488 | ||
1489 | req = kmalloc(sizeof(*req), GFP_KERNEL|__GFP_NORETRY); | |
38f736e9 | 1490 | if (!req) |
12e364b9 KC |
1491 | return NULL; |
1492 | ||
1493 | req->id = parahotplug_next_id(); | |
1494 | req->expiration = parahotplug_next_expiration(); | |
1495 | req->msg = *msg; | |
1496 | ||
1497 | return req; | |
1498 | } | |
1499 | ||
1500 | /* | |
1501 | * Free a parahotplug_request. | |
1502 | */ | |
1503 | static void | |
1504 | parahotplug_request_destroy(struct parahotplug_request *req) | |
1505 | { | |
1506 | kfree(req); | |
1507 | } | |
1508 | ||
1509 | /* | |
1510 | * Cause uevent to run the user level script to do the disable/enable | |
1511 | * specified in (the CONTROLVM message in) the specified | |
1512 | * parahotplug_request | |
1513 | */ | |
1514 | static void | |
1515 | parahotplug_request_kickoff(struct parahotplug_request *req) | |
1516 | { | |
2ea5117b | 1517 | struct controlvm_message_packet *cmd = &req->msg.cmd; |
12e364b9 KC |
1518 | char env_cmd[40], env_id[40], env_state[40], env_bus[40], env_dev[40], |
1519 | env_func[40]; | |
1520 | char *envp[] = { | |
1521 | env_cmd, env_id, env_state, env_bus, env_dev, env_func, NULL | |
1522 | }; | |
1523 | ||
1524 | sprintf(env_cmd, "SPAR_PARAHOTPLUG=1"); | |
1525 | sprintf(env_id, "SPAR_PARAHOTPLUG_ID=%d", req->id); | |
1526 | sprintf(env_state, "SPAR_PARAHOTPLUG_STATE=%d", | |
2ea5117b | 1527 | cmd->device_change_state.state.active); |
12e364b9 | 1528 | sprintf(env_bus, "SPAR_PARAHOTPLUG_BUS=%d", |
2ea5117b | 1529 | cmd->device_change_state.bus_no); |
12e364b9 | 1530 | sprintf(env_dev, "SPAR_PARAHOTPLUG_DEVICE=%d", |
2ea5117b | 1531 | cmd->device_change_state.dev_no >> 3); |
12e364b9 | 1532 | sprintf(env_func, "SPAR_PARAHOTPLUG_FUNCTION=%d", |
2ea5117b | 1533 | cmd->device_change_state.dev_no & 0x7); |
12e364b9 | 1534 | |
12e364b9 KC |
1535 | kobject_uevent_env(&Visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, |
1536 | envp); | |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * Remove any request from the list that's been on there too long and | |
1541 | * respond with an error. | |
1542 | */ | |
1543 | static void | |
1544 | parahotplug_process_list(void) | |
1545 | { | |
1546 | struct list_head *pos = NULL; | |
1547 | struct list_head *tmp = NULL; | |
1548 | ||
1549 | spin_lock(&Parahotplug_request_list_lock); | |
1550 | ||
1551 | list_for_each_safe(pos, tmp, &Parahotplug_request_list) { | |
1552 | struct parahotplug_request *req = | |
1553 | list_entry(pos, struct parahotplug_request, list); | |
1554 | if (time_after_eq(jiffies, req->expiration)) { | |
1555 | list_del(pos); | |
98d7b594 | 1556 | if (req->msg.hdr.flags.response_expected) |
12e364b9 KC |
1557 | controlvm_respond_physdev_changestate( |
1558 | &req->msg.hdr, | |
1559 | CONTROLVM_RESP_ERROR_DEVICE_UDEV_TIMEOUT, | |
2ea5117b | 1560 | req->msg.cmd.device_change_state.state); |
12e364b9 KC |
1561 | parahotplug_request_destroy(req); |
1562 | } | |
1563 | } | |
1564 | ||
1565 | spin_unlock(&Parahotplug_request_list_lock); | |
1566 | } | |
1567 | ||
1568 | /* | |
1569 | * Called from the /proc handler, which means the user script has | |
1570 | * finished the enable/disable. Find the matching identifier, and | |
1571 | * respond to the CONTROLVM message with success. | |
1572 | */ | |
1573 | static int | |
b06bdf7d | 1574 | parahotplug_request_complete(int id, u16 active) |
12e364b9 KC |
1575 | { |
1576 | struct list_head *pos = NULL; | |
1577 | struct list_head *tmp = NULL; | |
1578 | ||
1579 | spin_lock(&Parahotplug_request_list_lock); | |
1580 | ||
1581 | /* Look for a request matching "id". */ | |
1582 | list_for_each_safe(pos, tmp, &Parahotplug_request_list) { | |
1583 | struct parahotplug_request *req = | |
1584 | list_entry(pos, struct parahotplug_request, list); | |
1585 | if (req->id == id) { | |
1586 | /* Found a match. Remove it from the list and | |
1587 | * respond. | |
1588 | */ | |
1589 | list_del(pos); | |
1590 | spin_unlock(&Parahotplug_request_list_lock); | |
2ea5117b | 1591 | req->msg.cmd.device_change_state.state.active = active; |
98d7b594 | 1592 | if (req->msg.hdr.flags.response_expected) |
12e364b9 KC |
1593 | controlvm_respond_physdev_changestate( |
1594 | &req->msg.hdr, CONTROLVM_RESP_SUCCESS, | |
2ea5117b | 1595 | req->msg.cmd.device_change_state.state); |
12e364b9 KC |
1596 | parahotplug_request_destroy(req); |
1597 | return 0; | |
1598 | } | |
1599 | } | |
1600 | ||
1601 | spin_unlock(&Parahotplug_request_list_lock); | |
1602 | return -1; | |
1603 | } | |
1604 | ||
1605 | /* | |
1606 | * Enables or disables a PCI device by kicking off a udev script | |
1607 | */ | |
bd5b9b32 | 1608 | static void |
3ab47701 | 1609 | parahotplug_process_message(struct controlvm_message *inmsg) |
12e364b9 KC |
1610 | { |
1611 | struct parahotplug_request *req; | |
1612 | ||
1613 | req = parahotplug_request_create(inmsg); | |
1614 | ||
38f736e9 | 1615 | if (!req) |
12e364b9 | 1616 | return; |
12e364b9 | 1617 | |
2ea5117b | 1618 | if (inmsg->cmd.device_change_state.state.active) { |
12e364b9 KC |
1619 | /* For enable messages, just respond with success |
1620 | * right away. This is a bit of a hack, but there are | |
1621 | * issues with the early enable messages we get (with | |
1622 | * either the udev script not detecting that the device | |
1623 | * is up, or not getting called at all). Fortunately | |
1624 | * the messages that get lost don't matter anyway, as | |
1625 | * devices are automatically enabled at | |
1626 | * initialization. | |
1627 | */ | |
1628 | parahotplug_request_kickoff(req); | |
1629 | controlvm_respond_physdev_changestate(&inmsg->hdr, | |
2ea5117b BR |
1630 | CONTROLVM_RESP_SUCCESS, inmsg->cmd. |
1631 | device_change_state.state); | |
12e364b9 KC |
1632 | parahotplug_request_destroy(req); |
1633 | } else { | |
1634 | /* For disable messages, add the request to the | |
1635 | * request list before kicking off the udev script. It | |
1636 | * won't get responded to until the script has | |
1637 | * indicated it's done. | |
1638 | */ | |
1639 | spin_lock(&Parahotplug_request_list_lock); | |
1640 | list_add_tail(&(req->list), &Parahotplug_request_list); | |
1641 | spin_unlock(&Parahotplug_request_list_lock); | |
1642 | ||
1643 | parahotplug_request_kickoff(req); | |
1644 | } | |
1645 | } | |
1646 | ||
12e364b9 KC |
1647 | /* Process a controlvm message. |
1648 | * Return result: | |
1649 | * FALSE - this function will return FALSE only in the case where the | |
1650 | * controlvm message was NOT processed, but processing must be | |
1651 | * retried before reading the next controlvm message; a | |
1652 | * scenario where this can occur is when we need to throttle | |
1653 | * the allocation of memory in which to copy out controlvm | |
1654 | * payload data | |
1655 | * TRUE - processing of the controlvm message completed, | |
1656 | * either successfully or with an error. | |
1657 | */ | |
1658 | static BOOL | |
3ab47701 | 1659 | handle_command(struct controlvm_message inmsg, HOSTADDRESS channel_addr) |
12e364b9 | 1660 | { |
2ea5117b | 1661 | struct controlvm_message_packet *cmd = &inmsg.cmd; |
5fc0229a | 1662 | u64 parametersAddr = 0; |
b3c55b13 | 1663 | u32 parametersBytes = 0; |
317d9614 | 1664 | struct parser_context *parser_ctx = NULL; |
12e364b9 | 1665 | BOOL isLocalAddr = FALSE; |
3ab47701 | 1666 | struct controlvm_message ackmsg; |
12e364b9 KC |
1667 | |
1668 | /* create parsing context if necessary */ | |
98d7b594 | 1669 | isLocalAddr = (inmsg.hdr.flags.test_message == 1); |
0aca7844 | 1670 | if (channel_addr == 0) |
12e364b9 | 1671 | return TRUE; |
98d7b594 BR |
1672 | parametersAddr = channel_addr + inmsg.hdr.payload_vm_offset; |
1673 | parametersBytes = inmsg.hdr.payload_bytes; | |
12e364b9 KC |
1674 | |
1675 | /* Parameter and channel addresses within test messages actually lie | |
1676 | * within our OS-controlled memory. We need to know that, because it | |
1677 | * makes a difference in how we compute the virtual address. | |
1678 | */ | |
1679 | if (parametersAddr != 0 && parametersBytes != 0) { | |
1680 | BOOL retry = FALSE; | |
26eb2c0c | 1681 | |
12e364b9 | 1682 | parser_ctx = |
b2d97e4b | 1683 | parser_init_byte_stream(parametersAddr, parametersBytes, |
12e364b9 | 1684 | isLocalAddr, &retry); |
1b08872e BR |
1685 | if (!parser_ctx && retry) |
1686 | return FALSE; | |
12e364b9 KC |
1687 | } |
1688 | ||
1689 | if (!isLocalAddr) { | |
1690 | controlvm_init_response(&ackmsg, &inmsg.hdr, | |
1691 | CONTROLVM_RESP_SUCCESS); | |
c3d9a224 BR |
1692 | if (controlvm_channel) |
1693 | visorchannel_signalinsert(controlvm_channel, | |
1b08872e BR |
1694 | CONTROLVM_QUEUE_ACK, |
1695 | &ackmsg); | |
12e364b9 | 1696 | } |
98d7b594 | 1697 | switch (inmsg.hdr.id) { |
12e364b9 | 1698 | case CONTROLVM_CHIPSET_INIT: |
12e364b9 KC |
1699 | chipset_init(&inmsg); |
1700 | break; | |
1701 | case CONTROLVM_BUS_CREATE: | |
12e364b9 KC |
1702 | bus_create(&inmsg); |
1703 | break; | |
1704 | case CONTROLVM_BUS_DESTROY: | |
12e364b9 KC |
1705 | bus_destroy(&inmsg); |
1706 | break; | |
1707 | case CONTROLVM_BUS_CONFIGURE: | |
12e364b9 KC |
1708 | bus_configure(&inmsg, parser_ctx); |
1709 | break; | |
1710 | case CONTROLVM_DEVICE_CREATE: | |
12e364b9 KC |
1711 | my_device_create(&inmsg); |
1712 | break; | |
1713 | case CONTROLVM_DEVICE_CHANGESTATE: | |
2ea5117b | 1714 | if (cmd->device_change_state.flags.phys_device) { |
12e364b9 KC |
1715 | parahotplug_process_message(&inmsg); |
1716 | } else { | |
12e364b9 KC |
1717 | /* save the hdr and cmd structures for later use */ |
1718 | /* when sending back the response to Command */ | |
1719 | my_device_changestate(&inmsg); | |
da021f02 | 1720 | g_diag_msg_hdr = inmsg.hdr; |
4f44b72d | 1721 | g_devicechangestate_packet = inmsg.cmd; |
12e364b9 KC |
1722 | break; |
1723 | } | |
1724 | break; | |
1725 | case CONTROLVM_DEVICE_DESTROY: | |
12e364b9 KC |
1726 | my_device_destroy(&inmsg); |
1727 | break; | |
1728 | case CONTROLVM_DEVICE_CONFIGURE: | |
12e364b9 | 1729 | /* no op for now, just send a respond that we passed */ |
98d7b594 | 1730 | if (inmsg.hdr.flags.response_expected) |
12e364b9 KC |
1731 | controlvm_respond(&inmsg.hdr, CONTROLVM_RESP_SUCCESS); |
1732 | break; | |
1733 | case CONTROLVM_CHIPSET_READY: | |
12e364b9 KC |
1734 | chipset_ready(&inmsg.hdr); |
1735 | break; | |
1736 | case CONTROLVM_CHIPSET_SELFTEST: | |
12e364b9 KC |
1737 | chipset_selftest(&inmsg.hdr); |
1738 | break; | |
1739 | case CONTROLVM_CHIPSET_STOP: | |
12e364b9 KC |
1740 | chipset_notready(&inmsg.hdr); |
1741 | break; | |
1742 | default: | |
98d7b594 | 1743 | if (inmsg.hdr.flags.response_expected) |
12e364b9 KC |
1744 | controlvm_respond(&inmsg.hdr, |
1745 | -CONTROLVM_RESP_ERROR_MESSAGE_ID_UNKNOWN); | |
1746 | break; | |
1747 | } | |
1748 | ||
38f736e9 | 1749 | if (parser_ctx) { |
12e364b9 KC |
1750 | parser_done(parser_ctx); |
1751 | parser_ctx = NULL; | |
1752 | } | |
1753 | return TRUE; | |
1754 | } | |
1755 | ||
d746cb55 | 1756 | static HOSTADDRESS controlvm_get_channel_address(void) |
524b0b63 | 1757 | { |
5fc0229a | 1758 | u64 addr = 0; |
b3c55b13 | 1759 | u32 size = 0; |
524b0b63 | 1760 | |
0aca7844 | 1761 | if (!VMCALL_SUCCESSFUL(issue_vmcall_io_controlvm_addr(&addr, &size))) |
524b0b63 | 1762 | return 0; |
0aca7844 | 1763 | |
524b0b63 BR |
1764 | return addr; |
1765 | } | |
1766 | ||
12e364b9 KC |
1767 | static void |
1768 | controlvm_periodic_work(struct work_struct *work) | |
1769 | { | |
3ab47701 | 1770 | struct controlvm_message inmsg; |
12e364b9 KC |
1771 | BOOL gotACommand = FALSE; |
1772 | BOOL handle_command_failed = FALSE; | |
5fc0229a | 1773 | static u64 Poll_Count; |
12e364b9 KC |
1774 | |
1775 | /* make sure visorbus server is registered for controlvm callbacks */ | |
1776 | if (visorchipset_serverregwait && !serverregistered) | |
097f4c19 | 1777 | goto Away; |
12e364b9 KC |
1778 | /* make sure visorclientbus server is regsitered for controlvm |
1779 | * callbacks | |
1780 | */ | |
1781 | if (visorchipset_clientregwait && !clientregistered) | |
097f4c19 | 1782 | goto Away; |
12e364b9 | 1783 | |
12e364b9 | 1784 | Poll_Count++; |
8a1182eb | 1785 | if (Poll_Count >= 250) |
12e364b9 KC |
1786 | ; /* keep going */ |
1787 | else | |
097f4c19 | 1788 | goto Away; |
12e364b9 KC |
1789 | |
1790 | /* Check events to determine if response to CHIPSET_READY | |
1791 | * should be sent | |
1792 | */ | |
0639ba67 BR |
1793 | if (visorchipset_holdchipsetready && |
1794 | (g_chipset_msg_hdr.id != CONTROLVM_INVALID)) { | |
12e364b9 | 1795 | if (check_chipset_events() == 1) { |
da021f02 | 1796 | controlvm_respond(&g_chipset_msg_hdr, 0); |
12e364b9 | 1797 | clear_chipset_events(); |
da021f02 | 1798 | memset(&g_chipset_msg_hdr, 0, |
98d7b594 | 1799 | sizeof(struct controlvm_message_header)); |
12e364b9 KC |
1800 | } |
1801 | } | |
1802 | ||
c3d9a224 | 1803 | while (visorchannel_signalremove(controlvm_channel, |
8a1182eb | 1804 | CONTROLVM_QUEUE_RESPONSE, |
c3d9a224 BR |
1805 | &inmsg)) |
1806 | ; | |
8a1182eb BR |
1807 | if (!gotACommand) { |
1808 | if (ControlVm_Pending_Msg_Valid) { | |
1809 | /* we throttled processing of a prior | |
1810 | * msg, so try to process it again | |
1811 | * rather than reading a new one | |
1812 | */ | |
1813 | inmsg = ControlVm_Pending_Msg; | |
1814 | ControlVm_Pending_Msg_Valid = FALSE; | |
1815 | gotACommand = TRUE; | |
1816 | } else | |
1817 | gotACommand = read_controlvm_event(&inmsg); | |
1818 | } | |
12e364b9 KC |
1819 | |
1820 | handle_command_failed = FALSE; | |
1821 | while (gotACommand && (!handle_command_failed)) { | |
b53e0e93 | 1822 | most_recent_message_jiffies = jiffies; |
8a1182eb BR |
1823 | if (handle_command(inmsg, |
1824 | visorchannel_get_physaddr | |
c3d9a224 | 1825 | (controlvm_channel))) |
8a1182eb BR |
1826 | gotACommand = read_controlvm_event(&inmsg); |
1827 | else { | |
1828 | /* this is a scenario where throttling | |
1829 | * is required, but probably NOT an | |
1830 | * error...; we stash the current | |
1831 | * controlvm msg so we will attempt to | |
1832 | * reprocess it on our next loop | |
1833 | */ | |
1834 | handle_command_failed = TRUE; | |
1835 | ControlVm_Pending_Msg = inmsg; | |
1836 | ControlVm_Pending_Msg_Valid = TRUE; | |
12e364b9 KC |
1837 | } |
1838 | } | |
1839 | ||
1840 | /* parahotplug_worker */ | |
1841 | parahotplug_process_list(); | |
1842 | ||
12e364b9 KC |
1843 | Away: |
1844 | ||
1845 | if (time_after(jiffies, | |
b53e0e93 | 1846 | most_recent_message_jiffies + (HZ * MIN_IDLE_SECONDS))) { |
12e364b9 KC |
1847 | /* it's been longer than MIN_IDLE_SECONDS since we |
1848 | * processed our last controlvm message; slow down the | |
1849 | * polling | |
1850 | */ | |
911e213e BR |
1851 | if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_SLOW) |
1852 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; | |
12e364b9 | 1853 | } else { |
911e213e BR |
1854 | if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_FAST) |
1855 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; | |
12e364b9 KC |
1856 | } |
1857 | ||
9232d2d6 BR |
1858 | queue_delayed_work(periodic_controlvm_workqueue, |
1859 | &periodic_controlvm_work, poll_jiffies); | |
12e364b9 KC |
1860 | } |
1861 | ||
1862 | static void | |
1863 | setup_crash_devices_work_queue(struct work_struct *work) | |
1864 | { | |
3ab47701 BR |
1865 | struct controlvm_message localCrashCreateBusMsg; |
1866 | struct controlvm_message localCrashCreateDevMsg; | |
1867 | struct controlvm_message msg; | |
b3c55b13 | 1868 | u32 localSavedCrashMsgOffset; |
b06bdf7d | 1869 | u16 localSavedCrashMsgCount; |
12e364b9 KC |
1870 | |
1871 | /* make sure visorbus server is registered for controlvm callbacks */ | |
1872 | if (visorchipset_serverregwait && !serverregistered) | |
097f4c19 | 1873 | goto Away; |
12e364b9 KC |
1874 | |
1875 | /* make sure visorclientbus server is regsitered for controlvm | |
1876 | * callbacks | |
1877 | */ | |
1878 | if (visorchipset_clientregwait && !clientregistered) | |
097f4c19 | 1879 | goto Away; |
12e364b9 KC |
1880 | |
1881 | POSTCODE_LINUX_2(CRASH_DEV_ENTRY_PC, POSTCODE_SEVERITY_INFO); | |
1882 | ||
1883 | /* send init chipset msg */ | |
98d7b594 | 1884 | msg.hdr.id = CONTROLVM_CHIPSET_INIT; |
2ea5117b BR |
1885 | msg.cmd.init_chipset.bus_count = 23; |
1886 | msg.cmd.init_chipset.switch_count = 0; | |
12e364b9 KC |
1887 | |
1888 | chipset_init(&msg); | |
1889 | ||
12e364b9 | 1890 | /* get saved message count */ |
c3d9a224 | 1891 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
1892 | offsetof(struct spar_controlvm_channel_protocol, |
1893 | saved_crash_message_count), | |
b06bdf7d | 1894 | &localSavedCrashMsgCount, sizeof(u16)) < 0) { |
12e364b9 KC |
1895 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
1896 | POSTCODE_SEVERITY_ERR); | |
1897 | return; | |
1898 | } | |
1899 | ||
1900 | if (localSavedCrashMsgCount != CONTROLVM_CRASHMSG_MAX) { | |
12e364b9 KC |
1901 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, |
1902 | localSavedCrashMsgCount, | |
1903 | POSTCODE_SEVERITY_ERR); | |
1904 | return; | |
1905 | } | |
1906 | ||
1907 | /* get saved crash message offset */ | |
c3d9a224 | 1908 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
1909 | offsetof(struct spar_controlvm_channel_protocol, |
1910 | saved_crash_message_offset), | |
b3c55b13 | 1911 | &localSavedCrashMsgOffset, sizeof(u32)) < 0) { |
12e364b9 KC |
1912 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
1913 | POSTCODE_SEVERITY_ERR); | |
1914 | return; | |
1915 | } | |
1916 | ||
1917 | /* read create device message for storage bus offset */ | |
c3d9a224 | 1918 | if (visorchannel_read(controlvm_channel, |
12e364b9 KC |
1919 | localSavedCrashMsgOffset, |
1920 | &localCrashCreateBusMsg, | |
3ab47701 | 1921 | sizeof(struct controlvm_message)) < 0) { |
12e364b9 KC |
1922 | POSTCODE_LINUX_2(CRASH_DEV_RD_BUS_FAIULRE_PC, |
1923 | POSTCODE_SEVERITY_ERR); | |
1924 | return; | |
1925 | } | |
1926 | ||
1927 | /* read create device message for storage device */ | |
c3d9a224 | 1928 | if (visorchannel_read(controlvm_channel, |
12e364b9 | 1929 | localSavedCrashMsgOffset + |
3ab47701 | 1930 | sizeof(struct controlvm_message), |
12e364b9 | 1931 | &localCrashCreateDevMsg, |
3ab47701 | 1932 | sizeof(struct controlvm_message)) < 0) { |
12e364b9 KC |
1933 | POSTCODE_LINUX_2(CRASH_DEV_RD_DEV_FAIULRE_PC, |
1934 | POSTCODE_SEVERITY_ERR); | |
1935 | return; | |
1936 | } | |
1937 | ||
1938 | /* reuse IOVM create bus message */ | |
2ea5117b | 1939 | if (localCrashCreateBusMsg.cmd.create_bus.channel_addr != 0) |
12e364b9 KC |
1940 | bus_create(&localCrashCreateBusMsg); |
1941 | else { | |
12e364b9 KC |
1942 | POSTCODE_LINUX_2(CRASH_DEV_BUS_NULL_FAILURE_PC, |
1943 | POSTCODE_SEVERITY_ERR); | |
1944 | return; | |
1945 | } | |
1946 | ||
1947 | /* reuse create device message for storage device */ | |
f91b9262 | 1948 | if (localCrashCreateDevMsg.cmd.create_device.channel_addr != 0) |
12e364b9 KC |
1949 | my_device_create(&localCrashCreateDevMsg); |
1950 | else { | |
12e364b9 KC |
1951 | POSTCODE_LINUX_2(CRASH_DEV_DEV_NULL_FAILURE_PC, |
1952 | POSTCODE_SEVERITY_ERR); | |
1953 | return; | |
1954 | } | |
12e364b9 KC |
1955 | POSTCODE_LINUX_2(CRASH_DEV_EXIT_PC, POSTCODE_SEVERITY_INFO); |
1956 | return; | |
1957 | ||
1958 | Away: | |
1959 | ||
911e213e | 1960 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; |
12e364b9 | 1961 | |
9232d2d6 BR |
1962 | queue_delayed_work(periodic_controlvm_workqueue, |
1963 | &periodic_controlvm_work, poll_jiffies); | |
12e364b9 KC |
1964 | } |
1965 | ||
1966 | static void | |
1967 | bus_create_response(ulong busNo, int response) | |
1968 | { | |
1969 | bus_responder(CONTROLVM_BUS_CREATE, busNo, response); | |
1970 | } | |
1971 | ||
1972 | static void | |
1973 | bus_destroy_response(ulong busNo, int response) | |
1974 | { | |
1975 | bus_responder(CONTROLVM_BUS_DESTROY, busNo, response); | |
1976 | } | |
1977 | ||
1978 | static void | |
1979 | device_create_response(ulong busNo, ulong devNo, int response) | |
1980 | { | |
1981 | device_responder(CONTROLVM_DEVICE_CREATE, busNo, devNo, response); | |
1982 | } | |
1983 | ||
1984 | static void | |
1985 | device_destroy_response(ulong busNo, ulong devNo, int response) | |
1986 | { | |
1987 | device_responder(CONTROLVM_DEVICE_DESTROY, busNo, devNo, response); | |
1988 | } | |
1989 | ||
1990 | void | |
8420f417 | 1991 | visorchipset_device_pause_response(ulong bus_no, ulong dev_no, int response) |
12e364b9 | 1992 | { |
12e364b9 | 1993 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, |
8420f417 | 1994 | bus_no, dev_no, response, |
bd0d2dcc | 1995 | segment_state_standby); |
12e364b9 | 1996 | } |
927c7927 | 1997 | EXPORT_SYMBOL_GPL(visorchipset_device_pause_response); |
12e364b9 KC |
1998 | |
1999 | static void | |
2000 | device_resume_response(ulong busNo, ulong devNo, int response) | |
2001 | { | |
2002 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, | |
2003 | busNo, devNo, response, | |
bd0d2dcc | 2004 | segment_state_running); |
12e364b9 KC |
2005 | } |
2006 | ||
2007 | BOOL | |
77db7127 | 2008 | visorchipset_get_bus_info(ulong bus_no, struct visorchipset_bus_info *bus_info) |
12e364b9 | 2009 | { |
1390b88c | 2010 | void *p = findbus(&bus_info_list, bus_no); |
26eb2c0c | 2011 | |
0aca7844 | 2012 | if (!p) |
12e364b9 | 2013 | return FALSE; |
77db7127 | 2014 | memcpy(bus_info, p, sizeof(struct visorchipset_bus_info)); |
12e364b9 KC |
2015 | return TRUE; |
2016 | } | |
2017 | EXPORT_SYMBOL_GPL(visorchipset_get_bus_info); | |
2018 | ||
2019 | BOOL | |
58dd8f2d | 2020 | visorchipset_set_bus_context(ulong bus_no, void *context) |
12e364b9 | 2021 | { |
1390b88c | 2022 | struct visorchipset_bus_info *p = findbus(&bus_info_list, bus_no); |
26eb2c0c | 2023 | |
0aca7844 | 2024 | if (!p) |
12e364b9 | 2025 | return FALSE; |
12e364b9 KC |
2026 | p->bus_driver_context = context; |
2027 | return TRUE; | |
2028 | } | |
2029 | EXPORT_SYMBOL_GPL(visorchipset_set_bus_context); | |
2030 | ||
2031 | BOOL | |
b486df19 BR |
2032 | visorchipset_get_device_info(ulong bus_no, ulong dev_no, |
2033 | struct visorchipset_device_info *dev_info) | |
12e364b9 | 2034 | { |
1390b88c | 2035 | void *p = finddevice(&dev_info_list, bus_no, dev_no); |
26eb2c0c | 2036 | |
0aca7844 | 2037 | if (!p) |
12e364b9 | 2038 | return FALSE; |
b486df19 | 2039 | memcpy(dev_info, p, sizeof(struct visorchipset_device_info)); |
12e364b9 KC |
2040 | return TRUE; |
2041 | } | |
2042 | EXPORT_SYMBOL_GPL(visorchipset_get_device_info); | |
2043 | ||
2044 | BOOL | |
cf0bd0b5 | 2045 | visorchipset_set_device_context(ulong bus_no, ulong dev_no, void *context) |
12e364b9 | 2046 | { |
246e0cd0 | 2047 | struct visorchipset_device_info *p = |
1390b88c | 2048 | finddevice(&dev_info_list, bus_no, dev_no); |
26eb2c0c | 2049 | |
0aca7844 | 2050 | if (!p) |
12e364b9 | 2051 | return FALSE; |
12e364b9 KC |
2052 | p->bus_driver_context = context; |
2053 | return TRUE; | |
2054 | } | |
2055 | EXPORT_SYMBOL_GPL(visorchipset_set_device_context); | |
2056 | ||
2057 | /* Generic wrapper function for allocating memory from a kmem_cache pool. | |
2058 | */ | |
2059 | void * | |
2060 | visorchipset_cache_alloc(struct kmem_cache *pool, BOOL ok_to_block, | |
2061 | char *fn, int ln) | |
2062 | { | |
2063 | gfp_t gfp; | |
2064 | void *p; | |
2065 | ||
2066 | if (ok_to_block) | |
2067 | gfp = GFP_KERNEL; | |
2068 | else | |
2069 | gfp = GFP_ATOMIC; | |
2070 | /* __GFP_NORETRY means "ok to fail", meaning | |
2071 | * kmem_cache_alloc() can return NULL, implying the caller CAN | |
2072 | * cope with failure. If you do NOT specify __GFP_NORETRY, | |
2073 | * Linux will go to extreme measures to get memory for you | |
2074 | * (like, invoke oom killer), which will probably cripple the | |
2075 | * system. | |
2076 | */ | |
2077 | gfp |= __GFP_NORETRY; | |
2078 | p = kmem_cache_alloc(pool, gfp); | |
0aca7844 | 2079 | if (!p) |
12e364b9 | 2080 | return NULL; |
0aca7844 | 2081 | |
12e364b9 KC |
2082 | atomic_inc(&Visorchipset_cache_buffers_in_use); |
2083 | return p; | |
2084 | } | |
2085 | ||
2086 | /* Generic wrapper function for freeing memory from a kmem_cache pool. | |
2087 | */ | |
2088 | void | |
2089 | visorchipset_cache_free(struct kmem_cache *pool, void *p, char *fn, int ln) | |
2090 | { | |
0aca7844 | 2091 | if (!p) |
12e364b9 | 2092 | return; |
0aca7844 | 2093 | |
12e364b9 KC |
2094 | atomic_dec(&Visorchipset_cache_buffers_in_use); |
2095 | kmem_cache_free(pool, p); | |
2096 | } | |
2097 | ||
18b87ed1 BR |
2098 | static ssize_t chipsetready_store(struct device *dev, |
2099 | struct device_attribute *attr, const char *buf, size_t count) | |
12e364b9 | 2100 | { |
18b87ed1 | 2101 | char msgtype[64]; |
12e364b9 | 2102 | |
66e24b76 BR |
2103 | if (sscanf(buf, "%63s", msgtype) != 1) |
2104 | return -EINVAL; | |
2105 | ||
2106 | if (strcmp(msgtype, "CALLHOMEDISK_MOUNTED") == 0) { | |
2107 | chipset_events[0] = 1; | |
2108 | return count; | |
2109 | } else if (strcmp(msgtype, "MODULES_LOADED") == 0) { | |
2110 | chipset_events[1] = 1; | |
2111 | return count; | |
e22a4a0f BR |
2112 | } |
2113 | return -EINVAL; | |
12e364b9 KC |
2114 | } |
2115 | ||
e56fa7cd BR |
2116 | /* The parahotplug/devicedisabled interface gets called by our support script |
2117 | * when an SR-IOV device has been shut down. The ID is passed to the script | |
2118 | * and then passed back when the device has been removed. | |
2119 | */ | |
2120 | static ssize_t devicedisabled_store(struct device *dev, | |
2121 | struct device_attribute *attr, const char *buf, size_t count) | |
2122 | { | |
2123 | uint id; | |
2124 | ||
2125 | if (kstrtouint(buf, 10, &id) != 0) | |
2126 | return -EINVAL; | |
2127 | ||
2128 | parahotplug_request_complete(id, 0); | |
2129 | return count; | |
2130 | } | |
2131 | ||
2132 | /* The parahotplug/deviceenabled interface gets called by our support script | |
2133 | * when an SR-IOV device has been recovered. The ID is passed to the script | |
2134 | * and then passed back when the device has been brought back up. | |
2135 | */ | |
2136 | static ssize_t deviceenabled_store(struct device *dev, | |
2137 | struct device_attribute *attr, const char *buf, size_t count) | |
2138 | { | |
2139 | uint id; | |
2140 | ||
2141 | if (kstrtouint(buf, 10, &id) != 0) | |
2142 | return -EINVAL; | |
2143 | ||
2144 | parahotplug_request_complete(id, 1); | |
2145 | return count; | |
2146 | } | |
2147 | ||
12e364b9 KC |
2148 | static int __init |
2149 | visorchipset_init(void) | |
2150 | { | |
2151 | int rc = 0, x = 0; | |
8a1182eb | 2152 | HOSTADDRESS addr; |
12e364b9 | 2153 | |
fcd0157e KC |
2154 | if (!unisys_spar_platform) |
2155 | return -ENODEV; | |
2156 | ||
12e364b9 KC |
2157 | memset(&BusDev_Server_Notifiers, 0, sizeof(BusDev_Server_Notifiers)); |
2158 | memset(&BusDev_Client_Notifiers, 0, sizeof(BusDev_Client_Notifiers)); | |
84982fbf | 2159 | memset(&controlvm_payload_info, 0, sizeof(controlvm_payload_info)); |
ea33b4ee BR |
2160 | memset(&livedump_info, 0, sizeof(livedump_info)); |
2161 | atomic_set(&livedump_info.buffers_in_use, 0); | |
12e364b9 | 2162 | |
9f8d0e8b | 2163 | if (visorchipset_testvnic) { |
9f8d0e8b KC |
2164 | POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, x, DIAG_SEVERITY_ERR); |
2165 | rc = x; | |
2166 | goto Away; | |
2167 | } | |
12e364b9 | 2168 | |
8a1182eb BR |
2169 | addr = controlvm_get_channel_address(); |
2170 | if (addr != 0) { | |
c3d9a224 | 2171 | controlvm_channel = |
8a1182eb BR |
2172 | visorchannel_create_with_lock |
2173 | (addr, | |
d19642f6 | 2174 | sizeof(struct spar_controlvm_channel_protocol), |
5fbaa4b3 | 2175 | spar_controlvm_channel_protocol_uuid); |
93a84565 | 2176 | if (SPAR_CONTROLVM_CHANNEL_OK_CLIENT( |
c3d9a224 | 2177 | visorchannel_get_header(controlvm_channel))) { |
8a1182eb BR |
2178 | initialize_controlvm_payload(); |
2179 | } else { | |
c3d9a224 BR |
2180 | visorchannel_destroy(controlvm_channel); |
2181 | controlvm_channel = NULL; | |
8a1182eb BR |
2182 | return -ENODEV; |
2183 | } | |
2184 | } else { | |
8a1182eb BR |
2185 | return -ENODEV; |
2186 | } | |
2187 | ||
12e364b9 | 2188 | MajorDev = MKDEV(visorchipset_major, 0); |
c3d9a224 | 2189 | rc = visorchipset_file_init(MajorDev, &controlvm_channel); |
4cb005a9 | 2190 | if (rc < 0) { |
4cb005a9 KC |
2191 | POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC, DIAG_SEVERITY_ERR); |
2192 | goto Away; | |
2193 | } | |
9f8d0e8b | 2194 | |
da021f02 | 2195 | memset(&g_diag_msg_hdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2196 | |
da021f02 | 2197 | memset(&g_chipset_msg_hdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2198 | |
da021f02 | 2199 | memset(&g_del_dump_msg_hdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2200 | |
12e364b9 KC |
2201 | Putfile_buffer_list_pool = |
2202 | kmem_cache_create(Putfile_buffer_list_pool_name, | |
2203 | sizeof(struct putfile_buffer_entry), | |
2204 | 0, SLAB_HWCACHE_ALIGN, NULL); | |
2205 | if (!Putfile_buffer_list_pool) { | |
4cb005a9 KC |
2206 | POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC, DIAG_SEVERITY_ERR); |
2207 | rc = -1; | |
2208 | goto Away; | |
12e364b9 | 2209 | } |
2098dbd1 | 2210 | if (!visorchipset_disable_controlvm) { |
12e364b9 KC |
2211 | /* if booting in a crash kernel */ |
2212 | if (visorchipset_crash_kernel) | |
9232d2d6 | 2213 | INIT_DELAYED_WORK(&periodic_controlvm_work, |
12e364b9 KC |
2214 | setup_crash_devices_work_queue); |
2215 | else | |
9232d2d6 | 2216 | INIT_DELAYED_WORK(&periodic_controlvm_work, |
12e364b9 | 2217 | controlvm_periodic_work); |
9232d2d6 | 2218 | periodic_controlvm_workqueue = |
12e364b9 KC |
2219 | create_singlethread_workqueue("visorchipset_controlvm"); |
2220 | ||
38f736e9 | 2221 | if (!periodic_controlvm_workqueue) { |
4cb005a9 KC |
2222 | POSTCODE_LINUX_2(CREATE_WORKQUEUE_FAILED_PC, |
2223 | DIAG_SEVERITY_ERR); | |
2224 | rc = -ENOMEM; | |
2225 | goto Away; | |
2226 | } | |
b53e0e93 | 2227 | most_recent_message_jiffies = jiffies; |
911e213e | 2228 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; |
9232d2d6 BR |
2229 | rc = queue_delayed_work(periodic_controlvm_workqueue, |
2230 | &periodic_controlvm_work, poll_jiffies); | |
4cb005a9 | 2231 | if (rc < 0) { |
4cb005a9 KC |
2232 | POSTCODE_LINUX_2(QUEUE_DELAYED_WORK_PC, |
2233 | DIAG_SEVERITY_ERR); | |
2234 | goto Away; | |
2235 | } | |
12e364b9 KC |
2236 | } |
2237 | ||
2238 | Visorchipset_platform_device.dev.devt = MajorDev; | |
4cb005a9 | 2239 | if (platform_device_register(&Visorchipset_platform_device) < 0) { |
4cb005a9 KC |
2240 | POSTCODE_LINUX_2(DEVICE_REGISTER_FAILURE_PC, DIAG_SEVERITY_ERR); |
2241 | rc = -1; | |
2242 | goto Away; | |
2243 | } | |
12e364b9 | 2244 | POSTCODE_LINUX_2(CHIPSET_INIT_SUCCESS_PC, POSTCODE_SEVERITY_INFO); |
22ad57ba | 2245 | rc = 0; |
12e364b9 | 2246 | Away: |
12e364b9 | 2247 | if (rc) { |
12e364b9 KC |
2248 | POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, rc, |
2249 | POSTCODE_SEVERITY_ERR); | |
2250 | } | |
2251 | return rc; | |
2252 | } | |
2253 | ||
2254 | static void | |
2255 | visorchipset_exit(void) | |
2256 | { | |
12e364b9 KC |
2257 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); |
2258 | ||
2259 | if (visorchipset_disable_controlvm) { | |
2260 | ; | |
2261 | } else { | |
9232d2d6 BR |
2262 | cancel_delayed_work(&periodic_controlvm_work); |
2263 | flush_workqueue(periodic_controlvm_workqueue); | |
2264 | destroy_workqueue(periodic_controlvm_workqueue); | |
2265 | periodic_controlvm_workqueue = NULL; | |
84982fbf | 2266 | destroy_controlvm_payload_info(&controlvm_payload_info); |
12e364b9 | 2267 | } |
12e364b9 KC |
2268 | if (Putfile_buffer_list_pool) { |
2269 | kmem_cache_destroy(Putfile_buffer_list_pool); | |
2270 | Putfile_buffer_list_pool = NULL; | |
2271 | } | |
1783319f | 2272 | |
12e364b9 KC |
2273 | cleanup_controlvm_structures(); |
2274 | ||
da021f02 | 2275 | memset(&g_diag_msg_hdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2276 | |
da021f02 | 2277 | memset(&g_chipset_msg_hdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2278 | |
da021f02 | 2279 | memset(&g_del_dump_msg_hdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2280 | |
c3d9a224 | 2281 | visorchannel_destroy(controlvm_channel); |
8a1182eb | 2282 | |
12e364b9 KC |
2283 | visorchipset_file_cleanup(); |
2284 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); | |
12e364b9 KC |
2285 | } |
2286 | ||
2287 | module_param_named(testvnic, visorchipset_testvnic, int, S_IRUGO); | |
2288 | MODULE_PARM_DESC(visorchipset_testvnic, "1 to test vnic, using dummy VNIC connected via a loopback to a physical ethernet"); | |
2289 | int visorchipset_testvnic = 0; | |
2290 | ||
2291 | module_param_named(testvnicclient, visorchipset_testvnicclient, int, S_IRUGO); | |
2292 | MODULE_PARM_DESC(visorchipset_testvnicclient, "1 to test vnic, using real VNIC channel attached to a separate IOVM guest"); | |
2293 | int visorchipset_testvnicclient = 0; | |
2294 | ||
2295 | module_param_named(testmsg, visorchipset_testmsg, int, S_IRUGO); | |
2296 | MODULE_PARM_DESC(visorchipset_testmsg, | |
2297 | "1 to manufacture the chipset, bus, and switch messages"); | |
2298 | int visorchipset_testmsg = 0; | |
2299 | ||
2300 | module_param_named(major, visorchipset_major, int, S_IRUGO); | |
2301 | MODULE_PARM_DESC(visorchipset_major, "major device number to use for the device node"); | |
2302 | int visorchipset_major = 0; | |
2303 | ||
2304 | module_param_named(serverregwait, visorchipset_serverregwait, int, S_IRUGO); | |
2305 | MODULE_PARM_DESC(visorchipset_serverreqwait, | |
2306 | "1 to have the module wait for the visor bus to register"); | |
2307 | int visorchipset_serverregwait = 0; /* default is off */ | |
2308 | module_param_named(clientregwait, visorchipset_clientregwait, int, S_IRUGO); | |
2309 | MODULE_PARM_DESC(visorchipset_clientregwait, "1 to have the module wait for the visorclientbus to register"); | |
2310 | int visorchipset_clientregwait = 1; /* default is on */ | |
2311 | module_param_named(testteardown, visorchipset_testteardown, int, S_IRUGO); | |
2312 | MODULE_PARM_DESC(visorchipset_testteardown, | |
2313 | "1 to test teardown of the chipset, bus, and switch"); | |
2314 | int visorchipset_testteardown = 0; /* default is off */ | |
2315 | module_param_named(disable_controlvm, visorchipset_disable_controlvm, int, | |
2316 | S_IRUGO); | |
2317 | MODULE_PARM_DESC(visorchipset_disable_controlvm, | |
2318 | "1 to disable polling of controlVm channel"); | |
2319 | int visorchipset_disable_controlvm = 0; /* default is off */ | |
2320 | module_param_named(crash_kernel, visorchipset_crash_kernel, int, S_IRUGO); | |
2321 | MODULE_PARM_DESC(visorchipset_crash_kernel, | |
2322 | "1 means we are running in crash kernel"); | |
2323 | int visorchipset_crash_kernel = 0; /* default is running in non-crash kernel */ | |
2324 | module_param_named(holdchipsetready, visorchipset_holdchipsetready, | |
2325 | int, S_IRUGO); | |
2326 | MODULE_PARM_DESC(visorchipset_holdchipsetready, | |
2327 | "1 to hold response to CHIPSET_READY"); | |
2328 | int visorchipset_holdchipsetready = 0; /* default is to send CHIPSET_READY | |
2329 | * response immediately */ | |
2330 | module_init(visorchipset_init); | |
2331 | module_exit(visorchipset_exit); | |
2332 | ||
2333 | MODULE_AUTHOR("Unisys"); | |
2334 | MODULE_LICENSE("GPL"); | |
2335 | MODULE_DESCRIPTION("Supervisor chipset driver for service partition: ver " | |
2336 | VERSION); | |
2337 | MODULE_VERSION(VERSION); |