Commit | Line | Data |
---|---|---|
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" | |
23 | #include "testing.h" | |
24 | #include "file.h" | |
25 | #include "parser.h" | |
26 | #include "uniklog.h" | |
27 | #include "uisutils.h" | |
12e364b9 KC |
28 | #include "controlvmcompletionstatus.h" |
29 | #include "guestlinuxdebug.h" | |
12e364b9 KC |
30 | |
31 | #include <linux/nls.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/platform_device.h> | |
90addb02 | 34 | #include <linux/uuid.h> |
12e364b9 KC |
35 | |
36 | #define CURRENT_FILE_PC VISOR_CHIPSET_PC_visorchipset_main_c | |
37 | #define TEST_VNIC_PHYSITF "eth0" /* physical network itf for | |
38 | * vnic loopback test */ | |
39 | #define TEST_VNIC_SWITCHNO 1 | |
40 | #define TEST_VNIC_BUSNO 9 | |
41 | ||
42 | #define MAX_NAME_SIZE 128 | |
43 | #define MAX_IP_SIZE 50 | |
44 | #define MAXOUTSTANDINGCHANNELCOMMAND 256 | |
45 | #define POLLJIFFIES_CONTROLVMCHANNEL_FAST 1 | |
46 | #define POLLJIFFIES_CONTROLVMCHANNEL_SLOW 100 | |
47 | ||
48 | /* When the controlvm channel is idle for at least MIN_IDLE_SECONDS, | |
49 | * we switch to slow polling mode. As soon as we get a controlvm | |
50 | * message, we switch back to fast polling mode. | |
51 | */ | |
52 | #define MIN_IDLE_SECONDS 10 | |
bd5b9b32 KC |
53 | static ulong Poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; |
54 | static ulong Most_recent_message_jiffies; /* when we got our last | |
55 | * controlvm message */ | |
12e364b9 KC |
56 | static inline char * |
57 | NONULLSTR(char *s) | |
58 | { | |
59 | if (s) | |
60 | return s; | |
e22a4a0f | 61 | return ""; |
12e364b9 KC |
62 | } |
63 | ||
64 | static int serverregistered; | |
65 | static int clientregistered; | |
66 | ||
67 | #define MAX_CHIPSET_EVENTS 2 | |
c242233e | 68 | static u8 chipset_events[MAX_CHIPSET_EVENTS] = { 0, 0 }; |
12e364b9 KC |
69 | |
70 | static struct delayed_work Periodic_controlvm_work; | |
71 | static struct workqueue_struct *Periodic_controlvm_workqueue; | |
bd5b9b32 | 72 | static DEFINE_SEMAPHORE(NotifierLock); |
12e364b9 KC |
73 | |
74 | typedef struct { | |
3ab47701 | 75 | struct controlvm_message message; |
12e364b9 KC |
76 | unsigned int crc; |
77 | } MESSAGE_ENVELOPE; | |
78 | ||
98d7b594 BR |
79 | static struct controlvm_message_header g_DiagMsgHdr; |
80 | static struct controlvm_message_header g_ChipSetMsgHdr; | |
81 | static struct controlvm_message_header g_DelDumpMsgHdr; | |
90addb02 | 82 | static const uuid_le UltraDiagPoolChannelProtocolGuid = |
9eee5d1f | 83 | SPAR_DIAG_POOL_CHANNEL_PROTOCOL_UUID; |
12e364b9 KC |
84 | /* 0xffffff is an invalid Bus/Device number */ |
85 | static ulong g_diagpoolBusNo = 0xffffff; | |
86 | static ulong g_diagpoolDevNo = 0xffffff; | |
2ea5117b | 87 | static struct controlvm_message_packet g_DeviceChangeStatePacket; |
12e364b9 KC |
88 | |
89 | /* Only VNIC and VHBA channels are sent to visorclientbus (aka | |
90 | * "visorhackbus") | |
91 | */ | |
92 | #define FOR_VISORHACKBUS(channel_type_guid) \ | |
9eee5d1f BR |
93 | (((uuid_le_cmp(channel_type_guid,\ |
94 | spar_vnic_channel_protocol_uuid) == 0)\ | |
95 | || (uuid_le_cmp(channel_type_guid,\ | |
96 | spar_vhba_channel_protocol_uuid) == 0))) | |
12e364b9 KC |
97 | #define FOR_VISORBUS(channel_type_guid) (!(FOR_VISORHACKBUS(channel_type_guid))) |
98 | ||
99 | #define is_diagpool_channel(channel_type_guid) \ | |
90addb02 | 100 | (uuid_le_cmp(channel_type_guid, UltraDiagPoolChannelProtocolGuid) == 0) |
12e364b9 | 101 | |
12e364b9 KC |
102 | static LIST_HEAD(BusInfoList); |
103 | static LIST_HEAD(DevInfoList); | |
104 | ||
12e364b9 KC |
105 | static VISORCHANNEL *ControlVm_channel; |
106 | ||
12e364b9 | 107 | typedef struct { |
c242233e | 108 | u8 __iomem *ptr; /* pointer to base address of payload pool */ |
5fc0229a | 109 | u64 offset; /* offset from beginning of controlvm |
12e364b9 | 110 | * channel to beginning of payload * pool */ |
b3c55b13 | 111 | u32 bytes; /* number of bytes in payload pool */ |
12e364b9 KC |
112 | } CONTROLVM_PAYLOAD_INFO; |
113 | ||
114 | /* Manages the request payload in the controlvm channel */ | |
115 | static CONTROLVM_PAYLOAD_INFO ControlVm_payload_info; | |
116 | ||
9fd1b95a | 117 | static struct channel_header *Test_Vnic_channel; |
12e364b9 KC |
118 | |
119 | typedef struct { | |
98d7b594 BR |
120 | struct controlvm_message_header Dumpcapture_header; |
121 | struct controlvm_message_header Gettextdump_header; | |
122 | struct controlvm_message_header Dumpcomplete_header; | |
12e364b9 KC |
123 | BOOL Gettextdump_outstanding; |
124 | u32 crc32; | |
125 | ulong length; | |
126 | atomic_t buffers_in_use; | |
127 | ulong destination; | |
128 | } LIVEDUMP_INFO; | |
129 | /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE / | |
130 | * CONTROLVM_DUMP_GETTEXTDUMP / CONTROLVM_DUMP_COMPLETE conversation. | |
131 | */ | |
132 | static LIVEDUMP_INFO LiveDump_info; | |
133 | ||
134 | /* The following globals are used to handle the scenario where we are unable to | |
135 | * offload the payload from a controlvm message due to memory requirements. In | |
136 | * this scenario, we simply stash the controlvm message, then attempt to | |
137 | * process it again the next time controlvm_periodic_work() runs. | |
138 | */ | |
3ab47701 | 139 | static struct controlvm_message ControlVm_Pending_Msg; |
12e364b9 KC |
140 | static BOOL ControlVm_Pending_Msg_Valid = FALSE; |
141 | ||
142 | /* Pool of struct putfile_buffer_entry, for keeping track of pending (incoming) | |
143 | * TRANSMIT_FILE PutFile payloads. | |
144 | */ | |
145 | static struct kmem_cache *Putfile_buffer_list_pool; | |
146 | static const char Putfile_buffer_list_pool_name[] = | |
147 | "controlvm_putfile_buffer_list_pool"; | |
148 | ||
149 | /* This identifies a data buffer that has been received via a controlvm messages | |
150 | * in a remote --> local CONTROLVM_TRANSMIT_FILE conversation. | |
151 | */ | |
152 | struct putfile_buffer_entry { | |
153 | struct list_head next; /* putfile_buffer_entry list */ | |
154 | PARSER_CONTEXT *parser_ctx; /* points to buffer containing input data */ | |
155 | }; | |
156 | ||
157 | /* List of struct putfile_request *, via next_putfile_request member. | |
158 | * Each entry in this list identifies an outstanding TRANSMIT_FILE | |
159 | * conversation. | |
160 | */ | |
161 | static LIST_HEAD(Putfile_request_list); | |
162 | ||
163 | /* This describes a buffer and its current state of transfer (e.g., how many | |
164 | * bytes have already been supplied as putfile data, and how many bytes are | |
165 | * remaining) for a putfile_request. | |
166 | */ | |
167 | struct putfile_active_buffer { | |
168 | /* a payload from a controlvm message, containing a file data buffer */ | |
169 | PARSER_CONTEXT *parser_ctx; | |
170 | /* points within data area of parser_ctx to next byte of data */ | |
171 | u8 *pnext; | |
172 | /* # bytes left from <pnext> to the end of this data buffer */ | |
173 | size_t bytes_remaining; | |
174 | }; | |
175 | ||
176 | #define PUTFILE_REQUEST_SIG 0x0906101302281211 | |
177 | /* This identifies a single remote --> local CONTROLVM_TRANSMIT_FILE | |
178 | * conversation. Structs of this type are dynamically linked into | |
179 | * <Putfile_request_list>. | |
180 | */ | |
181 | struct putfile_request { | |
182 | u64 sig; /* PUTFILE_REQUEST_SIG */ | |
183 | ||
184 | /* header from original TransmitFile request */ | |
98d7b594 | 185 | struct controlvm_message_header controlvm_header; |
12e364b9 KC |
186 | u64 file_request_number; /* from original TransmitFile request */ |
187 | ||
188 | /* link to next struct putfile_request */ | |
189 | struct list_head next_putfile_request; | |
190 | ||
191 | /* most-recent sequence number supplied via a controlvm message */ | |
192 | u64 data_sequence_number; | |
193 | ||
194 | /* head of putfile_buffer_entry list, which describes the data to be | |
195 | * supplied as putfile data; | |
196 | * - this list is added to when controlvm messages come in that supply | |
197 | * file data | |
198 | * - this list is removed from via the hotplug program that is actually | |
199 | * consuming these buffers to write as file data */ | |
200 | struct list_head input_buffer_list; | |
201 | spinlock_t req_list_lock; /* lock for input_buffer_list */ | |
202 | ||
203 | /* waiters for input_buffer_list to go non-empty */ | |
204 | wait_queue_head_t input_buffer_wq; | |
205 | ||
206 | /* data not yet read within current putfile_buffer_entry */ | |
207 | struct putfile_active_buffer active_buf; | |
208 | ||
209 | /* <0 = failed, 0 = in-progress, >0 = successful; */ | |
210 | /* note that this must be set with req_list_lock, and if you set <0, */ | |
211 | /* it is your responsibility to also free up all of the other objects */ | |
212 | /* in this struct (like input_buffer_list, active_buf.parser_ctx) */ | |
213 | /* before releasing the lock */ | |
214 | int completion_status; | |
215 | }; | |
216 | ||
bd5b9b32 | 217 | static atomic_t Visorchipset_cache_buffers_in_use = ATOMIC_INIT(0); |
12e364b9 KC |
218 | |
219 | struct parahotplug_request { | |
220 | struct list_head list; | |
221 | int id; | |
222 | unsigned long expiration; | |
3ab47701 | 223 | struct controlvm_message msg; |
12e364b9 KC |
224 | }; |
225 | ||
226 | static LIST_HEAD(Parahotplug_request_list); | |
227 | static DEFINE_SPINLOCK(Parahotplug_request_list_lock); /* lock for above */ | |
228 | static void parahotplug_process_list(void); | |
229 | ||
230 | /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE / | |
231 | * CONTROLVM_REPORTEVENT. | |
232 | */ | |
fe90d892 BR |
233 | static struct visorchipset_busdev_notifiers BusDev_Server_Notifiers; |
234 | static struct visorchipset_busdev_notifiers BusDev_Client_Notifiers; | |
12e364b9 KC |
235 | |
236 | static void bus_create_response(ulong busNo, int response); | |
237 | static void bus_destroy_response(ulong busNo, int response); | |
238 | static void device_create_response(ulong busNo, ulong devNo, int response); | |
239 | static void device_destroy_response(ulong busNo, ulong devNo, int response); | |
240 | static void device_resume_response(ulong busNo, ulong devNo, int response); | |
241 | ||
929aa8ae | 242 | static struct visorchipset_busdev_responders BusDev_Responders = { |
12e364b9 KC |
243 | .bus_create = bus_create_response, |
244 | .bus_destroy = bus_destroy_response, | |
245 | .device_create = device_create_response, | |
246 | .device_destroy = device_destroy_response, | |
927c7927 | 247 | .device_pause = visorchipset_device_pause_response, |
12e364b9 KC |
248 | .device_resume = device_resume_response, |
249 | }; | |
250 | ||
251 | /* info for /dev/visorchipset */ | |
252 | static dev_t MajorDev = -1; /**< indicates major num for device */ | |
253 | ||
19f6634f BR |
254 | /* prototypes for attributes */ |
255 | static ssize_t toolaction_show(struct device *dev, | |
256 | struct device_attribute *attr, char *buf); | |
257 | static ssize_t toolaction_store(struct device *dev, | |
258 | struct device_attribute *attr, const char *buf, size_t count); | |
259 | static DEVICE_ATTR_RW(toolaction); | |
260 | ||
54b31229 BR |
261 | static ssize_t boottotool_show(struct device *dev, |
262 | struct device_attribute *attr, char *buf); | |
263 | static ssize_t boottotool_store(struct device *dev, | |
264 | struct device_attribute *attr, const char *buf, size_t count); | |
265 | static DEVICE_ATTR_RW(boottotool); | |
266 | ||
422af17c BR |
267 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, |
268 | char *buf); | |
269 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, | |
270 | const char *buf, size_t count); | |
271 | static DEVICE_ATTR_RW(error); | |
272 | ||
273 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, | |
274 | char *buf); | |
275 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, | |
276 | const char *buf, size_t count); | |
277 | static DEVICE_ATTR_RW(textid); | |
278 | ||
279 | static ssize_t remaining_steps_show(struct device *dev, | |
280 | struct device_attribute *attr, char *buf); | |
281 | static ssize_t remaining_steps_store(struct device *dev, | |
282 | struct device_attribute *attr, const char *buf, size_t count); | |
283 | static DEVICE_ATTR_RW(remaining_steps); | |
284 | ||
18b87ed1 BR |
285 | static ssize_t chipsetready_store(struct device *dev, |
286 | struct device_attribute *attr, const char *buf, size_t count); | |
287 | static DEVICE_ATTR_WO(chipsetready); | |
288 | ||
e56fa7cd BR |
289 | static ssize_t devicedisabled_store(struct device *dev, |
290 | struct device_attribute *attr, const char *buf, size_t count); | |
291 | static DEVICE_ATTR_WO(devicedisabled); | |
292 | ||
293 | static ssize_t deviceenabled_store(struct device *dev, | |
294 | struct device_attribute *attr, const char *buf, size_t count); | |
295 | static DEVICE_ATTR_WO(deviceenabled); | |
296 | ||
19f6634f BR |
297 | static struct attribute *visorchipset_install_attrs[] = { |
298 | &dev_attr_toolaction.attr, | |
54b31229 | 299 | &dev_attr_boottotool.attr, |
422af17c BR |
300 | &dev_attr_error.attr, |
301 | &dev_attr_textid.attr, | |
302 | &dev_attr_remaining_steps.attr, | |
19f6634f BR |
303 | NULL |
304 | }; | |
305 | ||
306 | static struct attribute_group visorchipset_install_group = { | |
307 | .name = "install", | |
308 | .attrs = visorchipset_install_attrs | |
309 | }; | |
310 | ||
18b87ed1 BR |
311 | static struct attribute *visorchipset_guest_attrs[] = { |
312 | &dev_attr_chipsetready.attr, | |
313 | NULL | |
314 | }; | |
315 | ||
316 | static struct attribute_group visorchipset_guest_group = { | |
317 | .name = "guest", | |
318 | .attrs = visorchipset_guest_attrs | |
319 | }; | |
320 | ||
e56fa7cd BR |
321 | static struct attribute *visorchipset_parahotplug_attrs[] = { |
322 | &dev_attr_devicedisabled.attr, | |
323 | &dev_attr_deviceenabled.attr, | |
324 | NULL | |
325 | }; | |
326 | ||
327 | static struct attribute_group visorchipset_parahotplug_group = { | |
328 | .name = "parahotplug", | |
329 | .attrs = visorchipset_parahotplug_attrs | |
330 | }; | |
331 | ||
19f6634f BR |
332 | static const struct attribute_group *visorchipset_dev_groups[] = { |
333 | &visorchipset_install_group, | |
18b87ed1 | 334 | &visorchipset_guest_group, |
e56fa7cd | 335 | &visorchipset_parahotplug_group, |
19f6634f BR |
336 | NULL |
337 | }; | |
338 | ||
12e364b9 KC |
339 | /* /sys/devices/platform/visorchipset */ |
340 | static struct platform_device Visorchipset_platform_device = { | |
341 | .name = "visorchipset", | |
342 | .id = -1, | |
19f6634f | 343 | .dev.groups = visorchipset_dev_groups, |
12e364b9 KC |
344 | }; |
345 | ||
346 | /* Function prototypes */ | |
98d7b594 BR |
347 | static void controlvm_respond(struct controlvm_message_header *msgHdr, |
348 | int response); | |
349 | static void controlvm_respond_chipset_init( | |
350 | struct controlvm_message_header *msgHdr, int response, | |
351 | enum ultra_chipset_feature features); | |
352 | static void controlvm_respond_physdev_changestate( | |
353 | struct controlvm_message_header *msgHdr, int response, | |
354 | struct spar_segment_state state); | |
12e364b9 | 355 | |
d746cb55 VB |
356 | static ssize_t toolaction_show(struct device *dev, |
357 | struct device_attribute *attr, | |
358 | char *buf) | |
19f6634f | 359 | { |
66e24b76 | 360 | u8 toolAction; |
19f6634f BR |
361 | |
362 | visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
363 | offsetof(struct spar_controlvm_channel_protocol, |
364 | tool_action), &toolAction, sizeof(u8)); | |
19f6634f BR |
365 | return scnprintf(buf, PAGE_SIZE, "%u\n", toolAction); |
366 | } | |
367 | ||
d746cb55 VB |
368 | static ssize_t toolaction_store(struct device *dev, |
369 | struct device_attribute *attr, | |
370 | const char *buf, size_t count) | |
19f6634f | 371 | { |
66e24b76 BR |
372 | u8 toolAction; |
373 | int ret; | |
19f6634f | 374 | |
66e24b76 BR |
375 | if (kstrtou8(buf, 10, &toolAction) != 0) |
376 | return -EINVAL; | |
377 | ||
378 | ret = visorchannel_write(ControlVm_channel, | |
d19642f6 | 379 | offsetof(struct spar_controlvm_channel_protocol, tool_action), |
66e24b76 BR |
380 | &toolAction, sizeof(u8)); |
381 | ||
382 | if (ret) | |
383 | return ret; | |
e22a4a0f | 384 | return count; |
19f6634f BR |
385 | } |
386 | ||
d746cb55 VB |
387 | static ssize_t boottotool_show(struct device *dev, |
388 | struct device_attribute *attr, | |
389 | char *buf) | |
54b31229 | 390 | { |
755e2ecc | 391 | struct efi_spar_indication efiSparIndication; |
54b31229 BR |
392 | |
393 | visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
394 | offsetof(struct spar_controlvm_channel_protocol, |
395 | efi_spar_ind), &efiSparIndication, | |
755e2ecc | 396 | sizeof(struct efi_spar_indication)); |
54b31229 | 397 | return scnprintf(buf, PAGE_SIZE, "%u\n", |
2450301a | 398 | efiSparIndication.boot_to_tool); |
54b31229 BR |
399 | } |
400 | ||
d746cb55 VB |
401 | static ssize_t boottotool_store(struct device *dev, |
402 | struct device_attribute *attr, | |
403 | const char *buf, size_t count) | |
54b31229 | 404 | { |
66e24b76 | 405 | int val, ret; |
755e2ecc | 406 | struct efi_spar_indication efiSparIndication; |
54b31229 | 407 | |
66e24b76 BR |
408 | if (kstrtoint(buf, 10, &val) != 0) |
409 | return -EINVAL; | |
410 | ||
2450301a | 411 | efiSparIndication.boot_to_tool = val; |
66e24b76 | 412 | ret = visorchannel_write(ControlVm_channel, |
d19642f6 BR |
413 | offsetof(struct spar_controlvm_channel_protocol, |
414 | efi_spar_ind), | |
54b31229 | 415 | &(efiSparIndication), |
755e2ecc | 416 | sizeof(struct efi_spar_indication)); |
66e24b76 BR |
417 | |
418 | if (ret) | |
419 | return ret; | |
e22a4a0f | 420 | return count; |
54b31229 | 421 | } |
422af17c BR |
422 | |
423 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, | |
424 | char *buf) | |
425 | { | |
426 | u32 error; | |
427 | ||
428 | visorchannel_read(ControlVm_channel, offsetof( | |
d19642f6 | 429 | struct spar_controlvm_channel_protocol, installation_error), |
422af17c BR |
430 | &error, sizeof(u32)); |
431 | return scnprintf(buf, PAGE_SIZE, "%i\n", error); | |
432 | } | |
433 | ||
434 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, | |
435 | const char *buf, size_t count) | |
436 | { | |
437 | u32 error; | |
66e24b76 | 438 | int ret; |
422af17c | 439 | |
66e24b76 BR |
440 | if (kstrtou32(buf, 10, &error) != 0) |
441 | return -EINVAL; | |
442 | ||
443 | ret = visorchannel_write(ControlVm_channel, | |
d19642f6 BR |
444 | offsetof(struct spar_controlvm_channel_protocol, |
445 | installation_error), | |
66e24b76 BR |
446 | &error, sizeof(u32)); |
447 | if (ret) | |
448 | return ret; | |
e22a4a0f | 449 | return count; |
422af17c BR |
450 | } |
451 | ||
452 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, | |
453 | char *buf) | |
454 | { | |
455 | u32 textId; | |
456 | ||
457 | visorchannel_read(ControlVm_channel, offsetof( | |
d19642f6 | 458 | struct spar_controlvm_channel_protocol, installation_text_id), |
422af17c BR |
459 | &textId, sizeof(u32)); |
460 | return scnprintf(buf, PAGE_SIZE, "%i\n", textId); | |
461 | } | |
462 | ||
463 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, | |
464 | const char *buf, size_t count) | |
465 | { | |
466 | u32 textId; | |
66e24b76 | 467 | int ret; |
422af17c | 468 | |
66e24b76 BR |
469 | if (kstrtou32(buf, 10, &textId) != 0) |
470 | return -EINVAL; | |
471 | ||
472 | ret = visorchannel_write(ControlVm_channel, | |
d19642f6 BR |
473 | offsetof(struct spar_controlvm_channel_protocol, |
474 | installation_text_id), | |
66e24b76 BR |
475 | &textId, sizeof(u32)); |
476 | if (ret) | |
477 | return ret; | |
e22a4a0f | 478 | return count; |
422af17c BR |
479 | } |
480 | ||
481 | ||
482 | static ssize_t remaining_steps_show(struct device *dev, | |
483 | struct device_attribute *attr, char *buf) | |
484 | { | |
485 | u16 remainingSteps; | |
486 | ||
487 | visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
488 | offsetof(struct spar_controlvm_channel_protocol, |
489 | installation_remaining_steps), | |
422af17c BR |
490 | &remainingSteps, |
491 | sizeof(u16)); | |
492 | return scnprintf(buf, PAGE_SIZE, "%hu\n", remainingSteps); | |
493 | } | |
494 | ||
495 | static ssize_t remaining_steps_store(struct device *dev, | |
496 | struct device_attribute *attr, const char *buf, size_t count) | |
497 | { | |
498 | u16 remainingSteps; | |
66e24b76 | 499 | int ret; |
422af17c | 500 | |
66e24b76 BR |
501 | if (kstrtou16(buf, 10, &remainingSteps) != 0) |
502 | return -EINVAL; | |
503 | ||
504 | ret = visorchannel_write(ControlVm_channel, | |
d19642f6 BR |
505 | offsetof(struct spar_controlvm_channel_protocol, |
506 | installation_remaining_steps), | |
66e24b76 BR |
507 | &remainingSteps, sizeof(u16)); |
508 | if (ret) | |
509 | return ret; | |
e22a4a0f | 510 | return count; |
422af17c BR |
511 | } |
512 | ||
12e364b9 KC |
513 | #if 0 |
514 | static void | |
515 | testUnicode(void) | |
516 | { | |
517 | wchar_t unicodeString[] = { 'a', 'b', 'c', 0 }; | |
518 | char s[sizeof(unicodeString) * NLS_MAX_CHARSET_SIZE]; | |
519 | wchar_t unicode2[99]; | |
520 | ||
521 | /* NOTE: Either due to a bug, or feature I don't understand, the | |
522 | * kernel utf8_mbstowcs() and utf_wcstombs() do NOT copy the | |
523 | * trailed NUL byte!! REALLY!!!!! Arrrrgggghhhhh | |
524 | */ | |
525 | ||
526 | LOGINF("sizeof(wchar_t) = %d", sizeof(wchar_t)); | |
527 | LOGINF("utf8_wcstombs=%d", | |
528 | chrs = utf8_wcstombs(s, unicodeString, sizeof(s))); | |
529 | if (chrs >= 0) | |
530 | s[chrs] = '\0'; /* GRRRRRRRR */ | |
531 | LOGINF("s='%s'", s); | |
532 | LOGINF("utf8_mbstowcs=%d", chrs = utf8_mbstowcs(unicode2, s, 100)); | |
533 | if (chrs >= 0) | |
534 | unicode2[chrs] = 0; /* GRRRRRRRR */ | |
535 | if (memcmp(unicodeString, unicode2, sizeof(unicodeString)) == 0) | |
536 | LOGINF("strings match... good"); | |
537 | else | |
538 | LOGINF("strings did not match!!"); | |
539 | } | |
540 | #endif | |
541 | ||
542 | static void | |
543 | busInfo_clear(void *v) | |
544 | { | |
33192fa1 | 545 | struct visorchipset_bus_info *p = (struct visorchipset_bus_info *) (v); |
12e364b9 | 546 | |
33192fa1 BR |
547 | if (p->proc_object) { |
548 | visor_proc_DestroyObject(p->proc_object); | |
549 | p->proc_object = NULL; | |
12e364b9 KC |
550 | } |
551 | kfree(p->name); | |
552 | p->name = NULL; | |
553 | ||
554 | kfree(p->description); | |
555 | p->description = NULL; | |
556 | ||
557 | p->state.created = 0; | |
33192fa1 | 558 | memset(p, 0, sizeof(struct visorchipset_bus_info)); |
12e364b9 KC |
559 | } |
560 | ||
561 | static void | |
562 | devInfo_clear(void *v) | |
563 | { | |
246e0cd0 BR |
564 | struct visorchipset_device_info *p = |
565 | (struct visorchipset_device_info *)(v); | |
26eb2c0c | 566 | |
12e364b9 | 567 | p->state.created = 0; |
246e0cd0 | 568 | memset(p, 0, sizeof(struct visorchipset_device_info)); |
12e364b9 KC |
569 | } |
570 | ||
c242233e | 571 | static u8 |
12e364b9 KC |
572 | check_chipset_events(void) |
573 | { | |
574 | int i; | |
c242233e | 575 | u8 send_msg = 1; |
12e364b9 KC |
576 | /* Check events to determine if response should be sent */ |
577 | for (i = 0; i < MAX_CHIPSET_EVENTS; i++) | |
578 | send_msg &= chipset_events[i]; | |
579 | return send_msg; | |
580 | } | |
581 | ||
582 | static void | |
583 | clear_chipset_events(void) | |
584 | { | |
585 | int i; | |
586 | /* Clear chipset_events */ | |
587 | for (i = 0; i < MAX_CHIPSET_EVENTS; i++) | |
588 | chipset_events[i] = 0; | |
589 | } | |
590 | ||
591 | void | |
fe90d892 BR |
592 | visorchipset_register_busdev_server( |
593 | struct visorchipset_busdev_notifiers *notifiers, | |
929aa8ae | 594 | struct visorchipset_busdev_responders *responders, |
1e7a59c1 | 595 | struct ultra_vbus_deviceinfo *driver_info) |
12e364b9 | 596 | { |
f2170625 | 597 | down(&NotifierLock); |
12e364b9 KC |
598 | if (notifiers == NULL) { |
599 | memset(&BusDev_Server_Notifiers, 0, | |
600 | sizeof(BusDev_Server_Notifiers)); | |
601 | serverregistered = 0; /* clear flag */ | |
602 | } else { | |
603 | BusDev_Server_Notifiers = *notifiers; | |
604 | serverregistered = 1; /* set flag */ | |
605 | } | |
606 | if (responders) | |
607 | *responders = BusDev_Responders; | |
1e7a59c1 BR |
608 | if (driver_info) |
609 | bus_device_info_init(driver_info, "chipset", "visorchipset", | |
836bee9e | 610 | VERSION, NULL); |
12e364b9 | 611 | |
f2170625 | 612 | up(&NotifierLock); |
12e364b9 KC |
613 | } |
614 | EXPORT_SYMBOL_GPL(visorchipset_register_busdev_server); | |
615 | ||
616 | void | |
fe90d892 BR |
617 | visorchipset_register_busdev_client( |
618 | struct visorchipset_busdev_notifiers *notifiers, | |
929aa8ae | 619 | struct visorchipset_busdev_responders *responders, |
43fce019 | 620 | struct ultra_vbus_deviceinfo *driver_info) |
12e364b9 | 621 | { |
f2170625 | 622 | down(&NotifierLock); |
12e364b9 KC |
623 | if (notifiers == NULL) { |
624 | memset(&BusDev_Client_Notifiers, 0, | |
625 | sizeof(BusDev_Client_Notifiers)); | |
626 | clientregistered = 0; /* clear flag */ | |
627 | } else { | |
628 | BusDev_Client_Notifiers = *notifiers; | |
629 | clientregistered = 1; /* set flag */ | |
630 | } | |
631 | if (responders) | |
632 | *responders = BusDev_Responders; | |
43fce019 BR |
633 | if (driver_info) |
634 | bus_device_info_init(driver_info, "chipset(bolts)", | |
635 | "visorchipset", VERSION, NULL); | |
f2170625 | 636 | up(&NotifierLock); |
12e364b9 KC |
637 | } |
638 | EXPORT_SYMBOL_GPL(visorchipset_register_busdev_client); | |
639 | ||
640 | static void | |
641 | cleanup_controlvm_structures(void) | |
642 | { | |
33192fa1 | 643 | struct visorchipset_bus_info *bi, *tmp_bi; |
246e0cd0 | 644 | struct visorchipset_device_info *di, *tmp_di; |
12e364b9 | 645 | |
e6b1ea77 | 646 | list_for_each_entry_safe(bi, tmp_bi, &BusInfoList, entry) { |
12e364b9 KC |
647 | busInfo_clear(bi); |
648 | list_del(&bi->entry); | |
649 | kfree(bi); | |
650 | } | |
651 | ||
e6b1ea77 | 652 | list_for_each_entry_safe(di, tmp_di, &DevInfoList, entry) { |
12e364b9 KC |
653 | devInfo_clear(di); |
654 | list_del(&di->entry); | |
655 | kfree(di); | |
656 | } | |
657 | } | |
658 | ||
659 | static void | |
3ab47701 | 660 | chipset_init(struct controlvm_message *inmsg) |
12e364b9 KC |
661 | { |
662 | static int chipset_inited; | |
b9b141e8 | 663 | enum ultra_chipset_feature features = 0; |
12e364b9 KC |
664 | int rc = CONTROLVM_RESP_SUCCESS; |
665 | ||
666 | POSTCODE_LINUX_2(CHIPSET_INIT_ENTRY_PC, POSTCODE_SEVERITY_INFO); | |
667 | if (chipset_inited) { | |
668 | LOGERR("CONTROLVM_CHIPSET_INIT Failed: Already Done."); | |
22ad57ba KC |
669 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
670 | goto Away; | |
12e364b9 KC |
671 | } |
672 | chipset_inited = 1; | |
673 | POSTCODE_LINUX_2(CHIPSET_INIT_EXIT_PC, POSTCODE_SEVERITY_INFO); | |
674 | ||
675 | /* Set features to indicate we support parahotplug (if Command | |
676 | * also supports it). */ | |
677 | features = | |
2ea5117b | 678 | inmsg->cmd.init_chipset. |
12e364b9 KC |
679 | features & ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG; |
680 | ||
681 | /* Set the "reply" bit so Command knows this is a | |
682 | * features-aware driver. */ | |
683 | features |= ULTRA_CHIPSET_FEATURE_REPLY; | |
684 | ||
685 | Away: | |
686 | if (rc < 0) | |
687 | cleanup_controlvm_structures(); | |
98d7b594 | 688 | if (inmsg->hdr.flags.response_expected) |
12e364b9 KC |
689 | controlvm_respond_chipset_init(&inmsg->hdr, rc, features); |
690 | } | |
691 | ||
692 | static void | |
3ab47701 | 693 | controlvm_init_response(struct controlvm_message *msg, |
98d7b594 | 694 | struct controlvm_message_header *msgHdr, int response) |
12e364b9 | 695 | { |
3ab47701 | 696 | memset(msg, 0, sizeof(struct controlvm_message)); |
98d7b594 BR |
697 | memcpy(&msg->hdr, msgHdr, sizeof(struct controlvm_message_header)); |
698 | msg->hdr.payload_bytes = 0; | |
699 | msg->hdr.payload_vm_offset = 0; | |
700 | msg->hdr.payload_max_bytes = 0; | |
12e364b9 | 701 | if (response < 0) { |
98d7b594 BR |
702 | msg->hdr.flags.failed = 1; |
703 | msg->hdr.completion_status = (u32) (-response); | |
12e364b9 KC |
704 | } |
705 | } | |
706 | ||
707 | static void | |
98d7b594 | 708 | controlvm_respond(struct controlvm_message_header *msgHdr, int response) |
12e364b9 | 709 | { |
3ab47701 | 710 | struct controlvm_message outmsg; |
26eb2c0c | 711 | |
12e364b9 KC |
712 | controlvm_init_response(&outmsg, msgHdr, response); |
713 | /* For DiagPool channel DEVICE_CHANGESTATE, we need to send | |
714 | * back the deviceChangeState structure in the packet. */ | |
98d7b594 | 715 | if (msgHdr->id == CONTROLVM_DEVICE_CHANGESTATE |
2ea5117b | 716 | && g_DeviceChangeStatePacket.device_change_state.bus_no == |
12e364b9 | 717 | g_diagpoolBusNo |
2ea5117b | 718 | && g_DeviceChangeStatePacket.device_change_state.dev_no == |
12e364b9 KC |
719 | g_diagpoolDevNo) |
720 | outmsg.cmd = g_DeviceChangeStatePacket; | |
98d7b594 | 721 | if (outmsg.hdr.flags.test_message == 1) { |
12e364b9 | 722 | LOGINF("%s controlvm_msg=0x%x response=%d for test message", |
98d7b594 | 723 | __func__, outmsg.hdr.id, response); |
12e364b9 KC |
724 | return; |
725 | } | |
726 | if (!visorchannel_signalinsert(ControlVm_channel, | |
727 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { | |
728 | LOGERR("signalinsert failed!"); | |
729 | return; | |
730 | } | |
731 | } | |
732 | ||
733 | static void | |
98d7b594 BR |
734 | controlvm_respond_chipset_init(struct controlvm_message_header *msgHdr, |
735 | int response, | |
b9b141e8 | 736 | enum ultra_chipset_feature features) |
12e364b9 | 737 | { |
3ab47701 | 738 | struct controlvm_message outmsg; |
26eb2c0c | 739 | |
12e364b9 | 740 | controlvm_init_response(&outmsg, msgHdr, response); |
2ea5117b | 741 | outmsg.cmd.init_chipset.features = features; |
12e364b9 KC |
742 | if (!visorchannel_signalinsert(ControlVm_channel, |
743 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { | |
744 | LOGERR("signalinsert failed!"); | |
745 | return; | |
746 | } | |
747 | } | |
748 | ||
98d7b594 BR |
749 | static void controlvm_respond_physdev_changestate( |
750 | struct controlvm_message_header *msgHdr, int response, | |
751 | struct spar_segment_state state) | |
12e364b9 | 752 | { |
3ab47701 | 753 | struct controlvm_message outmsg; |
26eb2c0c | 754 | |
12e364b9 | 755 | controlvm_init_response(&outmsg, msgHdr, response); |
2ea5117b BR |
756 | outmsg.cmd.device_change_state.state = state; |
757 | outmsg.cmd.device_change_state.flags.phys_device = 1; | |
12e364b9 KC |
758 | if (!visorchannel_signalinsert(ControlVm_channel, |
759 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { | |
760 | LOGERR("signalinsert failed!"); | |
761 | return; | |
762 | } | |
763 | } | |
764 | ||
765 | void | |
2c683cde BR |
766 | visorchipset_save_message(struct controlvm_message *msg, |
767 | enum crash_obj_type type) | |
12e364b9 | 768 | { |
b3c55b13 | 769 | u32 localSavedCrashMsgOffset; |
b06bdf7d | 770 | u16 localSavedCrashMsgCount; |
12e364b9 KC |
771 | |
772 | /* get saved message count */ | |
773 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
774 | offsetof(struct spar_controlvm_channel_protocol, |
775 | saved_crash_message_count), | |
b06bdf7d | 776 | &localSavedCrashMsgCount, sizeof(u16)) < 0) { |
12e364b9 KC |
777 | LOGERR("failed to get Saved Message Count"); |
778 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, | |
779 | POSTCODE_SEVERITY_ERR); | |
780 | return; | |
781 | } | |
782 | ||
783 | if (localSavedCrashMsgCount != CONTROLVM_CRASHMSG_MAX) { | |
784 | LOGERR("Saved Message Count incorrect %d", | |
785 | localSavedCrashMsgCount); | |
786 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, | |
787 | localSavedCrashMsgCount, | |
788 | POSTCODE_SEVERITY_ERR); | |
789 | return; | |
790 | } | |
791 | ||
792 | /* get saved crash message offset */ | |
793 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
794 | offsetof(struct spar_controlvm_channel_protocol, |
795 | saved_crash_message_offset), | |
b3c55b13 | 796 | &localSavedCrashMsgOffset, sizeof(u32)) < 0) { |
12e364b9 KC |
797 | LOGERR("failed to get Saved Message Offset"); |
798 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, | |
799 | POSTCODE_SEVERITY_ERR); | |
800 | return; | |
801 | } | |
802 | ||
2c683cde | 803 | if (type == CRASH_BUS) { |
12e364b9 KC |
804 | if (visorchannel_write(ControlVm_channel, |
805 | localSavedCrashMsgOffset, | |
3ab47701 BR |
806 | msg, |
807 | sizeof(struct controlvm_message)) < 0) { | |
12e364b9 KC |
808 | LOGERR("SAVE_MSG_BUS_FAILURE: Failed to write CrashCreateBusMsg!"); |
809 | POSTCODE_LINUX_2(SAVE_MSG_BUS_FAILURE_PC, | |
810 | POSTCODE_SEVERITY_ERR); | |
811 | return; | |
812 | } | |
813 | } else { | |
814 | if (visorchannel_write(ControlVm_channel, | |
815 | localSavedCrashMsgOffset + | |
3ab47701 BR |
816 | sizeof(struct controlvm_message), msg, |
817 | sizeof(struct controlvm_message)) < 0) { | |
12e364b9 KC |
818 | LOGERR("SAVE_MSG_DEV_FAILURE: Failed to write CrashCreateDevMsg!"); |
819 | POSTCODE_LINUX_2(SAVE_MSG_DEV_FAILURE_PC, | |
820 | POSTCODE_SEVERITY_ERR); | |
821 | return; | |
822 | } | |
823 | } | |
824 | } | |
825 | EXPORT_SYMBOL_GPL(visorchipset_save_message); | |
826 | ||
827 | static void | |
53bebb13 | 828 | bus_responder(enum controlvm_id cmdId, ulong busNo, int response) |
12e364b9 | 829 | { |
33192fa1 | 830 | struct visorchipset_bus_info *p = NULL; |
12e364b9 KC |
831 | BOOL need_clear = FALSE; |
832 | ||
833 | p = findbus(&BusInfoList, busNo); | |
834 | if (!p) { | |
835 | LOGERR("internal error busNo=%lu", busNo); | |
836 | return; | |
837 | } | |
838 | if (response < 0) { | |
839 | if ((cmdId == CONTROLVM_BUS_CREATE) && | |
840 | (response != (-CONTROLVM_RESP_ERROR_ALREADY_DONE))) | |
841 | /* undo the row we just created... */ | |
842 | delbusdevices(&DevInfoList, busNo); | |
843 | } else { | |
844 | if (cmdId == CONTROLVM_BUS_CREATE) | |
845 | p->state.created = 1; | |
846 | if (cmdId == CONTROLVM_BUS_DESTROY) | |
847 | need_clear = TRUE; | |
848 | } | |
849 | ||
33192fa1 | 850 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) { |
12e364b9 KC |
851 | LOGERR("bus_responder no pending msg"); |
852 | return; /* no controlvm response needed */ | |
853 | } | |
33192fa1 BR |
854 | if (p->pending_msg_hdr.id != (u32) cmdId) { |
855 | LOGERR("expected=%d, found=%d", cmdId, p->pending_msg_hdr.id); | |
12e364b9 KC |
856 | return; |
857 | } | |
33192fa1 BR |
858 | controlvm_respond(&p->pending_msg_hdr, response); |
859 | p->pending_msg_hdr.id = CONTROLVM_INVALID; | |
12e364b9 KC |
860 | if (need_clear) { |
861 | busInfo_clear(p); | |
862 | delbusdevices(&DevInfoList, busNo); | |
863 | } | |
864 | } | |
865 | ||
866 | static void | |
53bebb13 | 867 | device_changestate_responder(enum controlvm_id cmdId, |
12e364b9 | 868 | ulong busNo, ulong devNo, int response, |
3f833b54 | 869 | struct spar_segment_state responseState) |
12e364b9 | 870 | { |
246e0cd0 | 871 | struct visorchipset_device_info *p = NULL; |
3ab47701 | 872 | struct controlvm_message outmsg; |
12e364b9 | 873 | |
12e364b9 KC |
874 | p = finddevice(&DevInfoList, busNo, devNo); |
875 | if (!p) { | |
876 | LOGERR("internal error; busNo=%lu, devNo=%lu", busNo, devNo); | |
877 | return; | |
878 | } | |
246e0cd0 | 879 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) { |
12e364b9 KC |
880 | LOGERR("device_responder no pending msg"); |
881 | return; /* no controlvm response needed */ | |
882 | } | |
246e0cd0 BR |
883 | if (p->pending_msg_hdr.id != cmdId) { |
884 | LOGERR("expected=%d, found=%d", cmdId, p->pending_msg_hdr.id); | |
12e364b9 KC |
885 | return; |
886 | } | |
887 | ||
246e0cd0 | 888 | controlvm_init_response(&outmsg, &p->pending_msg_hdr, response); |
12e364b9 | 889 | |
2ea5117b BR |
890 | outmsg.cmd.device_change_state.bus_no = busNo; |
891 | outmsg.cmd.device_change_state.dev_no = devNo; | |
892 | outmsg.cmd.device_change_state.state = responseState; | |
12e364b9 KC |
893 | |
894 | if (!visorchannel_signalinsert(ControlVm_channel, | |
895 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { | |
896 | LOGERR("signalinsert failed!"); | |
897 | return; | |
898 | } | |
899 | ||
246e0cd0 | 900 | p->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 KC |
901 | } |
902 | ||
903 | static void | |
53bebb13 BR |
904 | device_responder(enum controlvm_id cmdId, ulong busNo, ulong devNo, |
905 | int response) | |
12e364b9 | 906 | { |
246e0cd0 | 907 | struct visorchipset_device_info *p = NULL; |
12e364b9 KC |
908 | BOOL need_clear = FALSE; |
909 | ||
910 | p = finddevice(&DevInfoList, busNo, devNo); | |
911 | if (!p) { | |
912 | LOGERR("internal error; busNo=%lu, devNo=%lu", busNo, devNo); | |
913 | return; | |
914 | } | |
915 | if (response >= 0) { | |
916 | if (cmdId == CONTROLVM_DEVICE_CREATE) | |
917 | p->state.created = 1; | |
918 | if (cmdId == CONTROLVM_DEVICE_DESTROY) | |
919 | need_clear = TRUE; | |
920 | } | |
921 | ||
246e0cd0 | 922 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) { |
12e364b9 KC |
923 | LOGERR("device_responder no pending msg"); |
924 | return; /* no controlvm response needed */ | |
925 | } | |
246e0cd0 BR |
926 | if (p->pending_msg_hdr.id != (u32) cmdId) { |
927 | LOGERR("expected=%d, found=%d", cmdId, p->pending_msg_hdr.id); | |
12e364b9 KC |
928 | return; |
929 | } | |
246e0cd0 BR |
930 | controlvm_respond(&p->pending_msg_hdr, response); |
931 | p->pending_msg_hdr.id = CONTROLVM_INVALID; | |
12e364b9 KC |
932 | if (need_clear) |
933 | devInfo_clear(p); | |
934 | } | |
935 | ||
936 | static void | |
b3c55b13 | 937 | bus_epilog(u32 busNo, |
98d7b594 | 938 | u32 cmd, struct controlvm_message_header *msgHdr, |
12e364b9 KC |
939 | int response, BOOL needResponse) |
940 | { | |
941 | BOOL notified = FALSE; | |
942 | ||
33192fa1 | 943 | struct visorchipset_bus_info *pBusInfo = findbus(&BusInfoList, busNo); |
12e364b9 KC |
944 | |
945 | if (!pBusInfo) { | |
946 | LOGERR("HUH? bad busNo=%d", busNo); | |
947 | return; | |
948 | } | |
949 | if (needResponse) { | |
33192fa1 | 950 | memcpy(&pBusInfo->pending_msg_hdr, msgHdr, |
98d7b594 | 951 | sizeof(struct controlvm_message_header)); |
12e364b9 | 952 | } else |
33192fa1 | 953 | pBusInfo->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 | 954 | |
f2170625 | 955 | down(&NotifierLock); |
12e364b9 KC |
956 | if (response == CONTROLVM_RESP_SUCCESS) { |
957 | switch (cmd) { | |
958 | case CONTROLVM_BUS_CREATE: | |
959 | /* We can't tell from the bus_create | |
960 | * information which of our 2 bus flavors the | |
961 | * devices on this bus will ultimately end up. | |
962 | * FORTUNATELY, it turns out it is harmless to | |
963 | * send the bus_create to both of them. We can | |
964 | * narrow things down a little bit, though, | |
965 | * because we know: - BusDev_Server can handle | |
966 | * either server or client devices | |
967 | * - BusDev_Client can handle ONLY client | |
968 | * devices */ | |
969 | if (BusDev_Server_Notifiers.bus_create) { | |
970 | (*BusDev_Server_Notifiers.bus_create) (busNo); | |
971 | notified = TRUE; | |
972 | } | |
973 | if ((!pBusInfo->flags.server) /*client */ && | |
974 | BusDev_Client_Notifiers.bus_create) { | |
975 | (*BusDev_Client_Notifiers.bus_create) (busNo); | |
976 | notified = TRUE; | |
977 | } | |
978 | break; | |
979 | case CONTROLVM_BUS_DESTROY: | |
980 | if (BusDev_Server_Notifiers.bus_destroy) { | |
981 | (*BusDev_Server_Notifiers.bus_destroy) (busNo); | |
982 | notified = TRUE; | |
983 | } | |
984 | if ((!pBusInfo->flags.server) /*client */ && | |
985 | BusDev_Client_Notifiers.bus_destroy) { | |
986 | (*BusDev_Client_Notifiers.bus_destroy) (busNo); | |
987 | notified = TRUE; | |
988 | } | |
989 | break; | |
990 | } | |
991 | } | |
992 | if (notified) | |
993 | /* The callback function just called above is responsible | |
929aa8ae | 994 | * for calling the appropriate visorchipset_busdev_responders |
12e364b9 KC |
995 | * function, which will call bus_responder() |
996 | */ | |
997 | ; | |
998 | else | |
999 | bus_responder(cmd, busNo, response); | |
f2170625 | 1000 | up(&NotifierLock); |
12e364b9 KC |
1001 | } |
1002 | ||
1003 | static void | |
3f833b54 | 1004 | device_epilog(u32 busNo, u32 devNo, struct spar_segment_state state, u32 cmd, |
98d7b594 | 1005 | struct controlvm_message_header *msgHdr, int response, |
12e364b9 KC |
1006 | BOOL needResponse, BOOL for_visorbus) |
1007 | { | |
fe90d892 | 1008 | struct visorchipset_busdev_notifiers *notifiers = NULL; |
12e364b9 KC |
1009 | BOOL notified = FALSE; |
1010 | ||
246e0cd0 | 1011 | struct visorchipset_device_info *pDevInfo = |
12e364b9 KC |
1012 | finddevice(&DevInfoList, busNo, devNo); |
1013 | char *envp[] = { | |
1014 | "SPARSP_DIAGPOOL_PAUSED_STATE = 1", | |
1015 | NULL | |
1016 | }; | |
1017 | ||
1018 | if (!pDevInfo) { | |
1019 | LOGERR("HUH? bad busNo=%d, devNo=%d", busNo, devNo); | |
1020 | return; | |
1021 | } | |
1022 | if (for_visorbus) | |
1023 | notifiers = &BusDev_Server_Notifiers; | |
1024 | else | |
1025 | notifiers = &BusDev_Client_Notifiers; | |
1026 | if (needResponse) { | |
246e0cd0 | 1027 | memcpy(&pDevInfo->pending_msg_hdr, msgHdr, |
98d7b594 | 1028 | sizeof(struct controlvm_message_header)); |
12e364b9 | 1029 | } else |
246e0cd0 | 1030 | pDevInfo->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 | 1031 | |
f2170625 | 1032 | down(&NotifierLock); |
12e364b9 KC |
1033 | if (response >= 0) { |
1034 | switch (cmd) { | |
1035 | case CONTROLVM_DEVICE_CREATE: | |
1036 | if (notifiers->device_create) { | |
1037 | (*notifiers->device_create) (busNo, devNo); | |
1038 | notified = TRUE; | |
1039 | } | |
1040 | break; | |
1041 | case CONTROLVM_DEVICE_CHANGESTATE: | |
1042 | /* ServerReady / ServerRunning / SegmentStateRunning */ | |
bd0d2dcc BR |
1043 | if (state.alive == segment_state_running.alive && |
1044 | state.operating == | |
1045 | segment_state_running.operating) { | |
12e364b9 KC |
1046 | if (notifiers->device_resume) { |
1047 | (*notifiers->device_resume) (busNo, | |
1048 | devNo); | |
1049 | notified = TRUE; | |
1050 | } | |
1051 | } | |
1052 | /* ServerNotReady / ServerLost / SegmentStateStandby */ | |
bd0d2dcc | 1053 | else if (state.alive == segment_state_standby.alive && |
3f833b54 | 1054 | state.operating == |
bd0d2dcc | 1055 | segment_state_standby.operating) { |
12e364b9 KC |
1056 | /* technically this is standby case |
1057 | * where server is lost | |
1058 | */ | |
1059 | if (notifiers->device_pause) { | |
1060 | (*notifiers->device_pause) (busNo, | |
1061 | devNo); | |
1062 | notified = TRUE; | |
1063 | } | |
bd0d2dcc | 1064 | } else if (state.alive == segment_state_paused.alive && |
3f833b54 | 1065 | state.operating == |
bd0d2dcc | 1066 | segment_state_paused.operating) { |
12e364b9 KC |
1067 | /* this is lite pause where channel is |
1068 | * still valid just 'pause' of it | |
1069 | */ | |
1070 | if (busNo == g_diagpoolBusNo | |
1071 | && devNo == g_diagpoolDevNo) { | |
1072 | LOGINF("DEVICE_CHANGESTATE(DiagpoolChannel busNo=%d devNo=%d is pausing...)", | |
1073 | busNo, devNo); | |
1074 | /* this will trigger the | |
1075 | * diag_shutdown.sh script in | |
1076 | * the visorchipset hotplug */ | |
1077 | kobject_uevent_env | |
1078 | (&Visorchipset_platform_device.dev. | |
1079 | kobj, KOBJ_ONLINE, envp); | |
1080 | } | |
1081 | } | |
1082 | break; | |
1083 | case CONTROLVM_DEVICE_DESTROY: | |
1084 | if (notifiers->device_destroy) { | |
1085 | (*notifiers->device_destroy) (busNo, devNo); | |
1086 | notified = TRUE; | |
1087 | } | |
1088 | break; | |
1089 | } | |
1090 | } | |
1091 | if (notified) | |
1092 | /* The callback function just called above is responsible | |
929aa8ae | 1093 | * for calling the appropriate visorchipset_busdev_responders |
12e364b9 KC |
1094 | * function, which will call device_responder() |
1095 | */ | |
1096 | ; | |
1097 | else | |
1098 | device_responder(cmd, busNo, devNo, response); | |
f2170625 | 1099 | up(&NotifierLock); |
12e364b9 KC |
1100 | } |
1101 | ||
1102 | static void | |
3ab47701 | 1103 | bus_create(struct controlvm_message *inmsg) |
12e364b9 | 1104 | { |
2ea5117b BR |
1105 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1106 | ulong busNo = cmd->create_bus.bus_no; | |
12e364b9 | 1107 | int rc = CONTROLVM_RESP_SUCCESS; |
33192fa1 | 1108 | struct visorchipset_bus_info *pBusInfo = NULL; |
12e364b9 KC |
1109 | |
1110 | ||
1111 | pBusInfo = findbus(&BusInfoList, busNo); | |
1112 | if (pBusInfo && (pBusInfo->state.created == 1)) { | |
1113 | LOGERR("CONTROLVM_BUS_CREATE Failed: bus %lu already exists", | |
1114 | busNo); | |
1115 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo, | |
1116 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1117 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
1118 | goto Away; | |
12e364b9 | 1119 | } |
33192fa1 | 1120 | pBusInfo = kzalloc(sizeof(struct visorchipset_bus_info), GFP_KERNEL); |
12e364b9 | 1121 | if (pBusInfo == NULL) { |
97a84f12 | 1122 | LOGERR("CONTROLVM_BUS_CREATE Failed: bus %lu kzalloc failed", |
12e364b9 KC |
1123 | busNo); |
1124 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo, | |
1125 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1126 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
1127 | goto Away; | |
12e364b9 KC |
1128 | } |
1129 | ||
12e364b9 | 1130 | INIT_LIST_HEAD(&pBusInfo->entry); |
33192fa1 BR |
1131 | pBusInfo->bus_no = busNo; |
1132 | pBusInfo->dev_no = cmd->create_bus.dev_count; | |
12e364b9 KC |
1133 | |
1134 | POSTCODE_LINUX_3(BUS_CREATE_ENTRY_PC, busNo, POSTCODE_SEVERITY_INFO); | |
1135 | ||
98d7b594 | 1136 | if (inmsg->hdr.flags.test_message == 1) |
33192fa1 | 1137 | pBusInfo->chan_info.addr_type = ADDRTYPE_LOCALTEST; |
12e364b9 | 1138 | else |
33192fa1 | 1139 | pBusInfo->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL; |
12e364b9 | 1140 | |
98d7b594 | 1141 | pBusInfo->flags.server = inmsg->hdr.flags.server; |
33192fa1 BR |
1142 | pBusInfo->chan_info.channel_addr = cmd->create_bus.channel_addr; |
1143 | pBusInfo->chan_info.n_channel_bytes = cmd->create_bus.channel_bytes; | |
1144 | pBusInfo->chan_info.channel_type_uuid = | |
9b1caee7 | 1145 | cmd->create_bus.bus_data_type_uuid; |
33192fa1 | 1146 | pBusInfo->chan_info.channel_inst_uuid = cmd->create_bus.bus_inst_uuid; |
12e364b9 KC |
1147 | |
1148 | list_add(&pBusInfo->entry, &BusInfoList); | |
1149 | ||
1150 | POSTCODE_LINUX_3(BUS_CREATE_EXIT_PC, busNo, POSTCODE_SEVERITY_INFO); | |
1151 | ||
1152 | Away: | |
1153 | bus_epilog(busNo, CONTROLVM_BUS_CREATE, &inmsg->hdr, | |
98d7b594 | 1154 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1155 | } |
1156 | ||
1157 | static void | |
3ab47701 | 1158 | bus_destroy(struct controlvm_message *inmsg) |
12e364b9 | 1159 | { |
2ea5117b BR |
1160 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1161 | ulong busNo = cmd->destroy_bus.bus_no; | |
33192fa1 | 1162 | struct visorchipset_bus_info *pBusInfo; |
12e364b9 KC |
1163 | int rc = CONTROLVM_RESP_SUCCESS; |
1164 | ||
1165 | pBusInfo = findbus(&BusInfoList, busNo); | |
1166 | if (!pBusInfo) { | |
1167 | LOGERR("CONTROLVM_BUS_DESTROY Failed: bus %lu invalid", busNo); | |
22ad57ba KC |
1168 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1169 | goto Away; | |
12e364b9 KC |
1170 | } |
1171 | if (pBusInfo->state.created == 0) { | |
1172 | LOGERR("CONTROLVM_BUS_DESTROY Failed: bus %lu already destroyed", | |
1173 | busNo); | |
22ad57ba KC |
1174 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
1175 | goto Away; | |
12e364b9 KC |
1176 | } |
1177 | ||
1178 | Away: | |
1179 | bus_epilog(busNo, CONTROLVM_BUS_DESTROY, &inmsg->hdr, | |
98d7b594 | 1180 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1181 | } |
1182 | ||
1183 | static void | |
3ab47701 | 1184 | bus_configure(struct controlvm_message *inmsg, PARSER_CONTEXT *parser_ctx) |
12e364b9 | 1185 | { |
2ea5117b BR |
1186 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1187 | ulong busNo = cmd->configure_bus.bus_no; | |
33192fa1 | 1188 | struct visorchipset_bus_info *pBusInfo = NULL; |
12e364b9 KC |
1189 | int rc = CONTROLVM_RESP_SUCCESS; |
1190 | char s[99]; | |
1191 | ||
2ea5117b | 1192 | busNo = cmd->configure_bus.bus_no; |
12e364b9 KC |
1193 | POSTCODE_LINUX_3(BUS_CONFIGURE_ENTRY_PC, busNo, POSTCODE_SEVERITY_INFO); |
1194 | ||
1195 | pBusInfo = findbus(&BusInfoList, busNo); | |
1196 | if (!pBusInfo) { | |
1197 | LOGERR("CONTROLVM_BUS_CONFIGURE Failed: bus %lu invalid", | |
1198 | busNo); | |
1199 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo, | |
1200 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1201 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1202 | goto Away; | |
12e364b9 KC |
1203 | } |
1204 | if (pBusInfo->state.created == 0) { | |
1205 | LOGERR("CONTROLVM_BUS_CONFIGURE Failed: Invalid bus %lu - not created yet", | |
1206 | busNo); | |
1207 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo, | |
1208 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1209 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1210 | goto Away; | |
12e364b9 KC |
1211 | } |
1212 | /* TBD - add this check to other commands also... */ | |
33192fa1 | 1213 | if (pBusInfo->pending_msg_hdr.id != CONTROLVM_INVALID) { |
12e364b9 | 1214 | LOGERR("CONTROLVM_BUS_CONFIGURE Failed: bus %lu MsgId=%u outstanding", |
33192fa1 | 1215 | busNo, (uint) pBusInfo->pending_msg_hdr.id); |
12e364b9 KC |
1216 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo, |
1217 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1218 | rc = -CONTROLVM_RESP_ERROR_MESSAGE_ID_INVALID_FOR_CLIENT; |
1219 | goto Away; | |
12e364b9 KC |
1220 | } |
1221 | ||
33192fa1 BR |
1222 | pBusInfo->partition_handle = cmd->configure_bus.guest_handle; |
1223 | pBusInfo->partition_uuid = parser_id_get(parser_ctx); | |
12e364b9 KC |
1224 | parser_param_start(parser_ctx, PARSERSTRING_NAME); |
1225 | pBusInfo->name = parser_string_get(parser_ctx); | |
1226 | ||
33192fa1 | 1227 | visorchannel_uuid_id(&pBusInfo->partition_uuid, s); |
12e364b9 KC |
1228 | POSTCODE_LINUX_3(BUS_CONFIGURE_EXIT_PC, busNo, POSTCODE_SEVERITY_INFO); |
1229 | Away: | |
1230 | bus_epilog(busNo, CONTROLVM_BUS_CONFIGURE, &inmsg->hdr, | |
98d7b594 | 1231 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1232 | } |
1233 | ||
1234 | static void | |
3ab47701 | 1235 | my_device_create(struct controlvm_message *inmsg) |
12e364b9 | 1236 | { |
2ea5117b | 1237 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
f91b9262 BR |
1238 | ulong busNo = cmd->create_device.bus_no; |
1239 | ulong devNo = cmd->create_device.dev_no; | |
246e0cd0 | 1240 | struct visorchipset_device_info *pDevInfo = NULL; |
33192fa1 | 1241 | struct visorchipset_bus_info *pBusInfo = NULL; |
12e364b9 KC |
1242 | int rc = CONTROLVM_RESP_SUCCESS; |
1243 | ||
1244 | pDevInfo = finddevice(&DevInfoList, busNo, devNo); | |
1245 | if (pDevInfo && (pDevInfo->state.created == 1)) { | |
1246 | LOGERR("CONTROLVM_DEVICE_CREATE Failed: busNo=%lu, devNo=%lu already exists", | |
1247 | busNo, devNo); | |
1248 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, | |
1249 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1250 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
1251 | goto Away; | |
12e364b9 KC |
1252 | } |
1253 | pBusInfo = findbus(&BusInfoList, busNo); | |
1254 | if (!pBusInfo) { | |
1255 | LOGERR("CONTROLVM_DEVICE_CREATE Failed: Invalid bus %lu - out of range", | |
1256 | busNo); | |
1257 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, | |
1258 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1259 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1260 | goto Away; | |
12e364b9 KC |
1261 | } |
1262 | if (pBusInfo->state.created == 0) { | |
1263 | LOGERR("CONTROLVM_DEVICE_CREATE Failed: Invalid bus %lu - not created yet", | |
1264 | busNo); | |
1265 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, | |
1266 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1267 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
1268 | goto Away; | |
12e364b9 | 1269 | } |
246e0cd0 | 1270 | pDevInfo = kzalloc(sizeof(struct visorchipset_device_info), GFP_KERNEL); |
12e364b9 KC |
1271 | if (pDevInfo == NULL) { |
1272 | LOGERR("CONTROLVM_DEVICE_CREATE Failed: busNo=%lu, devNo=%lu kmaloc failed", | |
1273 | busNo, devNo); | |
1274 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo, | |
1275 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1276 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
1277 | goto Away; | |
12e364b9 | 1278 | } |
97a84f12 | 1279 | |
12e364b9 | 1280 | INIT_LIST_HEAD(&pDevInfo->entry); |
246e0cd0 BR |
1281 | pDevInfo->bus_no = busNo; |
1282 | pDevInfo->dev_no = devNo; | |
1283 | pDevInfo->dev_inst_uuid = cmd->create_device.dev_inst_uuid; | |
12e364b9 KC |
1284 | POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC, devNo, busNo, |
1285 | POSTCODE_SEVERITY_INFO); | |
1286 | ||
98d7b594 | 1287 | if (inmsg->hdr.flags.test_message == 1) |
246e0cd0 | 1288 | pDevInfo->chan_info.addr_type = ADDRTYPE_LOCALTEST; |
12e364b9 | 1289 | else |
246e0cd0 BR |
1290 | pDevInfo->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL; |
1291 | pDevInfo->chan_info.channel_addr = cmd->create_device.channel_addr; | |
1292 | pDevInfo->chan_info.n_channel_bytes = cmd->create_device.channel_bytes; | |
1293 | pDevInfo->chan_info.channel_type_uuid = | |
9b1caee7 | 1294 | cmd->create_device.data_type_uuid; |
246e0cd0 | 1295 | pDevInfo->chan_info.intr = cmd->create_device.intr; |
12e364b9 KC |
1296 | list_add(&pDevInfo->entry, &DevInfoList); |
1297 | POSTCODE_LINUX_4(DEVICE_CREATE_EXIT_PC, devNo, busNo, | |
1298 | POSTCODE_SEVERITY_INFO); | |
1299 | Away: | |
1300 | /* get the bus and devNo for DiagPool channel */ | |
246e0cd0 | 1301 | if (is_diagpool_channel(pDevInfo->chan_info.channel_type_uuid)) { |
12e364b9 KC |
1302 | g_diagpoolBusNo = busNo; |
1303 | g_diagpoolDevNo = devNo; | |
1304 | LOGINF("CONTROLVM_DEVICE_CREATE for DiagPool channel: busNo=%lu, devNo=%lu", | |
1305 | g_diagpoolBusNo, g_diagpoolDevNo); | |
1306 | } | |
bd0d2dcc | 1307 | device_epilog(busNo, devNo, segment_state_running, |
12e364b9 | 1308 | CONTROLVM_DEVICE_CREATE, &inmsg->hdr, rc, |
98d7b594 | 1309 | inmsg->hdr.flags.response_expected == 1, |
246e0cd0 | 1310 | FOR_VISORBUS(pDevInfo->chan_info.channel_type_uuid)); |
12e364b9 KC |
1311 | } |
1312 | ||
1313 | static void | |
3ab47701 | 1314 | my_device_changestate(struct controlvm_message *inmsg) |
12e364b9 | 1315 | { |
2ea5117b BR |
1316 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1317 | ulong busNo = cmd->device_change_state.bus_no; | |
1318 | ulong devNo = cmd->device_change_state.dev_no; | |
1319 | struct spar_segment_state state = cmd->device_change_state.state; | |
246e0cd0 | 1320 | struct visorchipset_device_info *pDevInfo = NULL; |
12e364b9 KC |
1321 | int rc = CONTROLVM_RESP_SUCCESS; |
1322 | ||
1323 | pDevInfo = finddevice(&DevInfoList, busNo, devNo); | |
1324 | if (!pDevInfo) { | |
1325 | LOGERR("CONTROLVM_DEVICE_CHANGESTATE Failed: busNo=%lu, devNo=%lu invalid (doesn't exist)", | |
1326 | busNo, devNo); | |
1327 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, devNo, busNo, | |
1328 | POSTCODE_SEVERITY_ERR); | |
22ad57ba KC |
1329 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
1330 | goto Away; | |
12e364b9 KC |
1331 | } |
1332 | if (pDevInfo->state.created == 0) { | |
1333 | LOGERR("CONTROLVM_DEVICE_CHANGESTATE Failed: busNo=%lu, devNo=%lu invalid (not created)", | |
1334 | busNo, devNo); | |
1335 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, devNo, busNo, | |
1336 | POSTCODE_SEVERITY_ERR); | |
22ad57ba | 1337 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
12e364b9 KC |
1338 | } |
1339 | Away: | |
1340 | if ((rc >= CONTROLVM_RESP_SUCCESS) && pDevInfo) | |
1341 | device_epilog(busNo, devNo, state, CONTROLVM_DEVICE_CHANGESTATE, | |
1342 | &inmsg->hdr, rc, | |
98d7b594 | 1343 | inmsg->hdr.flags.response_expected == 1, |
9b1caee7 | 1344 | FOR_VISORBUS( |
246e0cd0 | 1345 | pDevInfo->chan_info.channel_type_uuid)); |
12e364b9 KC |
1346 | } |
1347 | ||
1348 | static void | |
3ab47701 | 1349 | my_device_destroy(struct controlvm_message *inmsg) |
12e364b9 | 1350 | { |
2ea5117b BR |
1351 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
1352 | ulong busNo = cmd->destroy_device.bus_no; | |
1353 | ulong devNo = cmd->destroy_device.dev_no; | |
246e0cd0 | 1354 | struct visorchipset_device_info *pDevInfo = NULL; |
12e364b9 KC |
1355 | int rc = CONTROLVM_RESP_SUCCESS; |
1356 | ||
1357 | pDevInfo = finddevice(&DevInfoList, busNo, devNo); | |
1358 | if (!pDevInfo) { | |
1359 | LOGERR("CONTROLVM_DEVICE_DESTROY Failed: busNo=%lu, devNo=%lu invalid", | |
1360 | busNo, devNo); | |
22ad57ba KC |
1361 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
1362 | goto Away; | |
12e364b9 KC |
1363 | } |
1364 | if (pDevInfo->state.created == 0) { | |
1365 | LOGERR("CONTROLVM_DEVICE_DESTROY Failed: busNo=%lu, devNo=%lu already destroyed", | |
1366 | busNo, devNo); | |
22ad57ba | 1367 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
12e364b9 KC |
1368 | } |
1369 | ||
1370 | Away: | |
1371 | if ((rc >= CONTROLVM_RESP_SUCCESS) && pDevInfo) | |
bd0d2dcc | 1372 | device_epilog(busNo, devNo, segment_state_running, |
12e364b9 | 1373 | CONTROLVM_DEVICE_DESTROY, &inmsg->hdr, rc, |
98d7b594 | 1374 | inmsg->hdr.flags.response_expected == 1, |
9b1caee7 | 1375 | FOR_VISORBUS( |
246e0cd0 | 1376 | pDevInfo->chan_info.channel_type_uuid)); |
12e364b9 KC |
1377 | } |
1378 | ||
1379 | /* When provided with the physical address of the controlvm channel | |
1380 | * (phys_addr), the offset to the payload area we need to manage | |
1381 | * (offset), and the size of this payload area (bytes), fills in the | |
1382 | * CONTROLVM_PAYLOAD_INFO struct. Returns TRUE for success or FALSE | |
1383 | * for failure. | |
1384 | */ | |
1385 | static int | |
5fc0229a | 1386 | initialize_controlvm_payload_info(HOSTADDRESS phys_addr, u64 offset, u32 bytes, |
12e364b9 KC |
1387 | CONTROLVM_PAYLOAD_INFO *info) |
1388 | { | |
c242233e | 1389 | u8 __iomem *payload = NULL; |
12e364b9 KC |
1390 | int rc = CONTROLVM_RESP_SUCCESS; |
1391 | ||
1392 | if (info == NULL) { | |
1393 | LOGERR("HUH ? CONTROLVM_PAYLOAD_INIT Failed : Programmer check at %s:%d", | |
1394 | __FILE__, __LINE__); | |
22ad57ba KC |
1395 | rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
1396 | goto Away; | |
12e364b9 KC |
1397 | } |
1398 | memset(info, 0, sizeof(CONTROLVM_PAYLOAD_INFO)); | |
1399 | if ((offset == 0) || (bytes == 0)) { | |
d19642f6 | 1400 | LOGERR("CONTROLVM_PAYLOAD_INIT Failed: request_payload_offset=%llu request_payload_bytes=%llu!", |
12e364b9 | 1401 | (u64) offset, (u64) bytes); |
22ad57ba KC |
1402 | rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
1403 | goto Away; | |
12e364b9 KC |
1404 | } |
1405 | payload = ioremap_cache(phys_addr + offset, bytes); | |
1406 | if (payload == NULL) { | |
1407 | LOGERR("CONTROLVM_PAYLOAD_INIT Failed: ioremap_cache %llu for %llu bytes failed", | |
1408 | (u64) offset, (u64) bytes); | |
22ad57ba KC |
1409 | rc = -CONTROLVM_RESP_ERROR_IOREMAP_FAILED; |
1410 | goto Away; | |
12e364b9 KC |
1411 | } |
1412 | ||
1413 | info->offset = offset; | |
1414 | info->bytes = bytes; | |
1415 | info->ptr = payload; | |
1416 | LOGINF("offset=%llu, bytes=%lu, ptr=%p", | |
1417 | (u64) (info->offset), (ulong) (info->bytes), info->ptr); | |
1418 | ||
1419 | Away: | |
1420 | if (rc < 0) { | |
1421 | if (payload != NULL) { | |
1422 | iounmap(payload); | |
1423 | payload = NULL; | |
1424 | } | |
1425 | } | |
1426 | return rc; | |
1427 | } | |
1428 | ||
1429 | static void | |
1430 | destroy_controlvm_payload_info(CONTROLVM_PAYLOAD_INFO *info) | |
1431 | { | |
1432 | if (info->ptr != NULL) { | |
1433 | iounmap(info->ptr); | |
1434 | info->ptr = NULL; | |
1435 | } | |
1436 | memset(info, 0, sizeof(CONTROLVM_PAYLOAD_INFO)); | |
1437 | } | |
1438 | ||
1439 | static void | |
1440 | initialize_controlvm_payload(void) | |
1441 | { | |
1442 | HOSTADDRESS phys_addr = visorchannel_get_physaddr(ControlVm_channel); | |
5fc0229a | 1443 | u64 payloadOffset = 0; |
b3c55b13 | 1444 | u32 payloadBytes = 0; |
26eb2c0c | 1445 | |
12e364b9 | 1446 | if (visorchannel_read(ControlVm_channel, |
d19642f6 BR |
1447 | offsetof(struct spar_controlvm_channel_protocol, |
1448 | request_payload_offset), | |
12e364b9 KC |
1449 | &payloadOffset, sizeof(payloadOffset)) < 0) { |
1450 | LOGERR("CONTROLVM_PAYLOAD_INIT Failed to read controlvm channel!"); | |
1451 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, | |
1452 | POSTCODE_SEVERITY_ERR); | |
1453 | return; | |
1454 | } | |
1455 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
1456 | offsetof(struct spar_controlvm_channel_protocol, |
1457 | request_payload_bytes), | |
12e364b9 KC |
1458 | &payloadBytes, sizeof(payloadBytes)) < 0) { |
1459 | LOGERR("CONTROLVM_PAYLOAD_INIT Failed to read controlvm channel!"); | |
1460 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, | |
1461 | POSTCODE_SEVERITY_ERR); | |
1462 | return; | |
1463 | } | |
1464 | initialize_controlvm_payload_info(phys_addr, | |
1465 | payloadOffset, payloadBytes, | |
1466 | &ControlVm_payload_info); | |
1467 | } | |
1468 | ||
1469 | /* Send ACTION=online for DEVPATH=/sys/devices/platform/visorchipset. | |
1470 | * Returns CONTROLVM_RESP_xxx code. | |
1471 | */ | |
1472 | int | |
1473 | visorchipset_chipset_ready(void) | |
1474 | { | |
1475 | kobject_uevent(&Visorchipset_platform_device.dev.kobj, KOBJ_ONLINE); | |
1476 | return CONTROLVM_RESP_SUCCESS; | |
1477 | } | |
1478 | EXPORT_SYMBOL_GPL(visorchipset_chipset_ready); | |
1479 | ||
1480 | int | |
1481 | visorchipset_chipset_selftest(void) | |
1482 | { | |
1483 | char env_selftest[20]; | |
1484 | char *envp[] = { env_selftest, NULL }; | |
26eb2c0c | 1485 | |
12e364b9 KC |
1486 | sprintf(env_selftest, "SPARSP_SELFTEST=%d", 1); |
1487 | kobject_uevent_env(&Visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, | |
1488 | envp); | |
1489 | return CONTROLVM_RESP_SUCCESS; | |
1490 | } | |
1491 | EXPORT_SYMBOL_GPL(visorchipset_chipset_selftest); | |
1492 | ||
1493 | /* Send ACTION=offline for DEVPATH=/sys/devices/platform/visorchipset. | |
1494 | * Returns CONTROLVM_RESP_xxx code. | |
1495 | */ | |
1496 | int | |
1497 | visorchipset_chipset_notready(void) | |
1498 | { | |
1499 | kobject_uevent(&Visorchipset_platform_device.dev.kobj, KOBJ_OFFLINE); | |
1500 | return CONTROLVM_RESP_SUCCESS; | |
1501 | } | |
1502 | EXPORT_SYMBOL_GPL(visorchipset_chipset_notready); | |
1503 | ||
1504 | static void | |
98d7b594 | 1505 | chipset_ready(struct controlvm_message_header *msgHdr) |
12e364b9 KC |
1506 | { |
1507 | int rc = visorchipset_chipset_ready(); | |
26eb2c0c | 1508 | |
12e364b9 KC |
1509 | if (rc != CONTROLVM_RESP_SUCCESS) |
1510 | rc = -rc; | |
98d7b594 | 1511 | if (msgHdr->flags.response_expected && !visorchipset_holdchipsetready) |
12e364b9 | 1512 | controlvm_respond(msgHdr, rc); |
98d7b594 | 1513 | if (msgHdr->flags.response_expected && visorchipset_holdchipsetready) { |
12e364b9 KC |
1514 | /* Send CHIPSET_READY response when all modules have been loaded |
1515 | * and disks mounted for the partition | |
1516 | */ | |
1517 | g_ChipSetMsgHdr = *msgHdr; | |
1518 | LOGINF("Holding CHIPSET_READY response"); | |
1519 | } | |
1520 | } | |
1521 | ||
1522 | static void | |
98d7b594 | 1523 | chipset_selftest(struct controlvm_message_header *msgHdr) |
12e364b9 KC |
1524 | { |
1525 | int rc = visorchipset_chipset_selftest(); | |
26eb2c0c | 1526 | |
12e364b9 KC |
1527 | if (rc != CONTROLVM_RESP_SUCCESS) |
1528 | rc = -rc; | |
98d7b594 | 1529 | if (msgHdr->flags.response_expected) |
12e364b9 KC |
1530 | controlvm_respond(msgHdr, rc); |
1531 | } | |
1532 | ||
1533 | static void | |
98d7b594 | 1534 | chipset_notready(struct controlvm_message_header *msgHdr) |
12e364b9 KC |
1535 | { |
1536 | int rc = visorchipset_chipset_notready(); | |
26eb2c0c | 1537 | |
12e364b9 KC |
1538 | if (rc != CONTROLVM_RESP_SUCCESS) |
1539 | rc = -rc; | |
98d7b594 | 1540 | if (msgHdr->flags.response_expected) |
12e364b9 KC |
1541 | controlvm_respond(msgHdr, rc); |
1542 | } | |
1543 | ||
1544 | /* This is your "one-stop" shop for grabbing the next message from the | |
1545 | * CONTROLVM_QUEUE_EVENT queue in the controlvm channel. | |
1546 | */ | |
1547 | static BOOL | |
3ab47701 | 1548 | read_controlvm_event(struct controlvm_message *msg) |
12e364b9 KC |
1549 | { |
1550 | if (visorchannel_signalremove(ControlVm_channel, | |
1551 | CONTROLVM_QUEUE_EVENT, msg)) { | |
1552 | /* got a message */ | |
98d7b594 BR |
1553 | if (msg->hdr.flags.test_message == 1) { |
1554 | LOGERR("ignoring bad CONTROLVM_QUEUE_EVENT msg with controlvm_msg_id=0x%x because Flags.testMessage is nonsensical (=1)", | |
1555 | msg->hdr.id); | |
12e364b9 | 1556 | return FALSE; |
e22a4a0f BR |
1557 | } |
1558 | return TRUE; | |
12e364b9 KC |
1559 | } |
1560 | return FALSE; | |
1561 | } | |
1562 | ||
1563 | /* | |
1564 | * The general parahotplug flow works as follows. The visorchipset | |
1565 | * driver receives a DEVICE_CHANGESTATE message from Command | |
1566 | * specifying a physical device to enable or disable. The CONTROLVM | |
1567 | * message handler calls parahotplug_process_message, which then adds | |
1568 | * the message to a global list and kicks off a udev event which | |
1569 | * causes a user level script to enable or disable the specified | |
1570 | * device. The udev script then writes to | |
1571 | * /proc/visorchipset/parahotplug, which causes parahotplug_proc_write | |
1572 | * to get called, at which point the appropriate CONTROLVM message is | |
1573 | * retrieved from the list and responded to. | |
1574 | */ | |
1575 | ||
1576 | #define PARAHOTPLUG_TIMEOUT_MS 2000 | |
1577 | ||
1578 | /* | |
1579 | * Generate unique int to match an outstanding CONTROLVM message with a | |
1580 | * udev script /proc response | |
1581 | */ | |
1582 | static int | |
1583 | parahotplug_next_id(void) | |
1584 | { | |
1585 | static atomic_t id = ATOMIC_INIT(0); | |
26eb2c0c | 1586 | |
12e364b9 KC |
1587 | return atomic_inc_return(&id); |
1588 | } | |
1589 | ||
1590 | /* | |
1591 | * Returns the time (in jiffies) when a CONTROLVM message on the list | |
1592 | * should expire -- PARAHOTPLUG_TIMEOUT_MS in the future | |
1593 | */ | |
1594 | static unsigned long | |
1595 | parahotplug_next_expiration(void) | |
1596 | { | |
1597 | return jiffies + PARAHOTPLUG_TIMEOUT_MS * HZ / 1000; | |
1598 | } | |
1599 | ||
1600 | /* | |
1601 | * Create a parahotplug_request, which is basically a wrapper for a | |
1602 | * CONTROLVM_MESSAGE that we can stick on a list | |
1603 | */ | |
1604 | static struct parahotplug_request * | |
3ab47701 | 1605 | parahotplug_request_create(struct controlvm_message *msg) |
12e364b9 KC |
1606 | { |
1607 | struct parahotplug_request *req = | |
1608 | kmalloc(sizeof(struct parahotplug_request), | |
1609 | GFP_KERNEL|__GFP_NORETRY); | |
1610 | if (req == NULL) | |
1611 | return NULL; | |
1612 | ||
1613 | req->id = parahotplug_next_id(); | |
1614 | req->expiration = parahotplug_next_expiration(); | |
1615 | req->msg = *msg; | |
1616 | ||
1617 | return req; | |
1618 | } | |
1619 | ||
1620 | /* | |
1621 | * Free a parahotplug_request. | |
1622 | */ | |
1623 | static void | |
1624 | parahotplug_request_destroy(struct parahotplug_request *req) | |
1625 | { | |
1626 | kfree(req); | |
1627 | } | |
1628 | ||
1629 | /* | |
1630 | * Cause uevent to run the user level script to do the disable/enable | |
1631 | * specified in (the CONTROLVM message in) the specified | |
1632 | * parahotplug_request | |
1633 | */ | |
1634 | static void | |
1635 | parahotplug_request_kickoff(struct parahotplug_request *req) | |
1636 | { | |
2ea5117b | 1637 | struct controlvm_message_packet *cmd = &req->msg.cmd; |
12e364b9 KC |
1638 | char env_cmd[40], env_id[40], env_state[40], env_bus[40], env_dev[40], |
1639 | env_func[40]; | |
1640 | char *envp[] = { | |
1641 | env_cmd, env_id, env_state, env_bus, env_dev, env_func, NULL | |
1642 | }; | |
1643 | ||
1644 | sprintf(env_cmd, "SPAR_PARAHOTPLUG=1"); | |
1645 | sprintf(env_id, "SPAR_PARAHOTPLUG_ID=%d", req->id); | |
1646 | sprintf(env_state, "SPAR_PARAHOTPLUG_STATE=%d", | |
2ea5117b | 1647 | cmd->device_change_state.state.active); |
12e364b9 | 1648 | sprintf(env_bus, "SPAR_PARAHOTPLUG_BUS=%d", |
2ea5117b | 1649 | cmd->device_change_state.bus_no); |
12e364b9 | 1650 | sprintf(env_dev, "SPAR_PARAHOTPLUG_DEVICE=%d", |
2ea5117b | 1651 | cmd->device_change_state.dev_no >> 3); |
12e364b9 | 1652 | sprintf(env_func, "SPAR_PARAHOTPLUG_FUNCTION=%d", |
2ea5117b | 1653 | cmd->device_change_state.dev_no & 0x7); |
12e364b9 KC |
1654 | |
1655 | LOGINF("parahotplug_request_kickoff: state=%d, bdf=%d/%d/%d, id=%u\n", | |
2ea5117b BR |
1656 | cmd->device_change_state.state.active, |
1657 | cmd->device_change_state.bus_no, | |
1658 | cmd->device_change_state.dev_no >> 3, | |
1659 | cmd->device_change_state.dev_no & 7, req->id); | |
12e364b9 KC |
1660 | |
1661 | kobject_uevent_env(&Visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, | |
1662 | envp); | |
1663 | } | |
1664 | ||
1665 | /* | |
1666 | * Remove any request from the list that's been on there too long and | |
1667 | * respond with an error. | |
1668 | */ | |
1669 | static void | |
1670 | parahotplug_process_list(void) | |
1671 | { | |
1672 | struct list_head *pos = NULL; | |
1673 | struct list_head *tmp = NULL; | |
1674 | ||
1675 | spin_lock(&Parahotplug_request_list_lock); | |
1676 | ||
1677 | list_for_each_safe(pos, tmp, &Parahotplug_request_list) { | |
1678 | struct parahotplug_request *req = | |
1679 | list_entry(pos, struct parahotplug_request, list); | |
1680 | if (time_after_eq(jiffies, req->expiration)) { | |
1681 | list_del(pos); | |
98d7b594 | 1682 | if (req->msg.hdr.flags.response_expected) |
12e364b9 KC |
1683 | controlvm_respond_physdev_changestate( |
1684 | &req->msg.hdr, | |
1685 | CONTROLVM_RESP_ERROR_DEVICE_UDEV_TIMEOUT, | |
2ea5117b | 1686 | req->msg.cmd.device_change_state.state); |
12e364b9 KC |
1687 | parahotplug_request_destroy(req); |
1688 | } | |
1689 | } | |
1690 | ||
1691 | spin_unlock(&Parahotplug_request_list_lock); | |
1692 | } | |
1693 | ||
1694 | /* | |
1695 | * Called from the /proc handler, which means the user script has | |
1696 | * finished the enable/disable. Find the matching identifier, and | |
1697 | * respond to the CONTROLVM message with success. | |
1698 | */ | |
1699 | static int | |
b06bdf7d | 1700 | parahotplug_request_complete(int id, u16 active) |
12e364b9 KC |
1701 | { |
1702 | struct list_head *pos = NULL; | |
1703 | struct list_head *tmp = NULL; | |
1704 | ||
1705 | spin_lock(&Parahotplug_request_list_lock); | |
1706 | ||
1707 | /* Look for a request matching "id". */ | |
1708 | list_for_each_safe(pos, tmp, &Parahotplug_request_list) { | |
1709 | struct parahotplug_request *req = | |
1710 | list_entry(pos, struct parahotplug_request, list); | |
1711 | if (req->id == id) { | |
1712 | /* Found a match. Remove it from the list and | |
1713 | * respond. | |
1714 | */ | |
1715 | list_del(pos); | |
1716 | spin_unlock(&Parahotplug_request_list_lock); | |
2ea5117b | 1717 | req->msg.cmd.device_change_state.state.active = active; |
98d7b594 | 1718 | if (req->msg.hdr.flags.response_expected) |
12e364b9 KC |
1719 | controlvm_respond_physdev_changestate( |
1720 | &req->msg.hdr, CONTROLVM_RESP_SUCCESS, | |
2ea5117b | 1721 | req->msg.cmd.device_change_state.state); |
12e364b9 KC |
1722 | parahotplug_request_destroy(req); |
1723 | return 0; | |
1724 | } | |
1725 | } | |
1726 | ||
1727 | spin_unlock(&Parahotplug_request_list_lock); | |
1728 | return -1; | |
1729 | } | |
1730 | ||
1731 | /* | |
1732 | * Enables or disables a PCI device by kicking off a udev script | |
1733 | */ | |
bd5b9b32 | 1734 | static void |
3ab47701 | 1735 | parahotplug_process_message(struct controlvm_message *inmsg) |
12e364b9 KC |
1736 | { |
1737 | struct parahotplug_request *req; | |
1738 | ||
1739 | req = parahotplug_request_create(inmsg); | |
1740 | ||
1741 | if (req == NULL) { | |
1742 | LOGERR("parahotplug_process_message: couldn't allocate request"); | |
1743 | return; | |
1744 | } | |
1745 | ||
2ea5117b | 1746 | if (inmsg->cmd.device_change_state.state.active) { |
12e364b9 KC |
1747 | /* For enable messages, just respond with success |
1748 | * right away. This is a bit of a hack, but there are | |
1749 | * issues with the early enable messages we get (with | |
1750 | * either the udev script not detecting that the device | |
1751 | * is up, or not getting called at all). Fortunately | |
1752 | * the messages that get lost don't matter anyway, as | |
1753 | * devices are automatically enabled at | |
1754 | * initialization. | |
1755 | */ | |
1756 | parahotplug_request_kickoff(req); | |
1757 | controlvm_respond_physdev_changestate(&inmsg->hdr, | |
2ea5117b BR |
1758 | CONTROLVM_RESP_SUCCESS, inmsg->cmd. |
1759 | device_change_state.state); | |
12e364b9 KC |
1760 | parahotplug_request_destroy(req); |
1761 | } else { | |
1762 | /* For disable messages, add the request to the | |
1763 | * request list before kicking off the udev script. It | |
1764 | * won't get responded to until the script has | |
1765 | * indicated it's done. | |
1766 | */ | |
1767 | spin_lock(&Parahotplug_request_list_lock); | |
1768 | list_add_tail(&(req->list), &Parahotplug_request_list); | |
1769 | spin_unlock(&Parahotplug_request_list_lock); | |
1770 | ||
1771 | parahotplug_request_kickoff(req); | |
1772 | } | |
1773 | } | |
1774 | ||
12e364b9 KC |
1775 | /* Process a controlvm message. |
1776 | * Return result: | |
1777 | * FALSE - this function will return FALSE only in the case where the | |
1778 | * controlvm message was NOT processed, but processing must be | |
1779 | * retried before reading the next controlvm message; a | |
1780 | * scenario where this can occur is when we need to throttle | |
1781 | * the allocation of memory in which to copy out controlvm | |
1782 | * payload data | |
1783 | * TRUE - processing of the controlvm message completed, | |
1784 | * either successfully or with an error. | |
1785 | */ | |
1786 | static BOOL | |
3ab47701 | 1787 | handle_command(struct controlvm_message inmsg, HOSTADDRESS channel_addr) |
12e364b9 | 1788 | { |
2ea5117b | 1789 | struct controlvm_message_packet *cmd = &inmsg.cmd; |
5fc0229a | 1790 | u64 parametersAddr = 0; |
b3c55b13 | 1791 | u32 parametersBytes = 0; |
12e364b9 KC |
1792 | PARSER_CONTEXT *parser_ctx = NULL; |
1793 | BOOL isLocalAddr = FALSE; | |
3ab47701 | 1794 | struct controlvm_message ackmsg; |
12e364b9 KC |
1795 | |
1796 | /* create parsing context if necessary */ | |
98d7b594 | 1797 | isLocalAddr = (inmsg.hdr.flags.test_message == 1); |
12e364b9 KC |
1798 | if (channel_addr == 0) { |
1799 | LOGERR("HUH? channel_addr is 0!"); | |
1800 | return TRUE; | |
1801 | } | |
98d7b594 BR |
1802 | parametersAddr = channel_addr + inmsg.hdr.payload_vm_offset; |
1803 | parametersBytes = inmsg.hdr.payload_bytes; | |
12e364b9 KC |
1804 | |
1805 | /* Parameter and channel addresses within test messages actually lie | |
1806 | * within our OS-controlled memory. We need to know that, because it | |
1807 | * makes a difference in how we compute the virtual address. | |
1808 | */ | |
1809 | if (parametersAddr != 0 && parametersBytes != 0) { | |
1810 | BOOL retry = FALSE; | |
26eb2c0c | 1811 | |
12e364b9 KC |
1812 | parser_ctx = |
1813 | parser_init_byteStream(parametersAddr, parametersBytes, | |
1814 | isLocalAddr, &retry); | |
1815 | if (!parser_ctx) { | |
1816 | if (retry) { | |
1817 | LOGWRN("throttling to copy payload"); | |
1818 | return FALSE; | |
1819 | } | |
1820 | LOGWRN("parsing failed"); | |
98d7b594 | 1821 | LOGWRN("inmsg.hdr.Id=0x%lx", (ulong) inmsg.hdr.id); |
12e364b9 KC |
1822 | LOGWRN("parametersAddr=0x%llx", (u64) parametersAddr); |
1823 | LOGWRN("parametersBytes=%lu", (ulong) parametersBytes); | |
1824 | LOGWRN("isLocalAddr=%d", isLocalAddr); | |
1825 | } | |
1826 | } | |
1827 | ||
1828 | if (!isLocalAddr) { | |
1829 | controlvm_init_response(&ackmsg, &inmsg.hdr, | |
1830 | CONTROLVM_RESP_SUCCESS); | |
1831 | if ((ControlVm_channel) | |
1832 | && | |
1833 | (!visorchannel_signalinsert | |
1834 | (ControlVm_channel, CONTROLVM_QUEUE_ACK, &ackmsg))) | |
1835 | LOGWRN("failed to send ACK failed"); | |
1836 | } | |
98d7b594 | 1837 | switch (inmsg.hdr.id) { |
12e364b9 KC |
1838 | case CONTROLVM_CHIPSET_INIT: |
1839 | LOGINF("CHIPSET_INIT(#busses=%lu,#switches=%lu)", | |
2ea5117b BR |
1840 | (ulong) inmsg.cmd.init_chipset.bus_count, |
1841 | (ulong) inmsg.cmd.init_chipset.switch_count); | |
12e364b9 KC |
1842 | chipset_init(&inmsg); |
1843 | break; | |
1844 | case CONTROLVM_BUS_CREATE: | |
1845 | LOGINF("BUS_CREATE(%lu,#devs=%lu)", | |
2ea5117b BR |
1846 | (ulong) cmd->create_bus.bus_no, |
1847 | (ulong) cmd->create_bus.dev_count); | |
12e364b9 KC |
1848 | bus_create(&inmsg); |
1849 | break; | |
1850 | case CONTROLVM_BUS_DESTROY: | |
2ea5117b | 1851 | LOGINF("BUS_DESTROY(%lu)", (ulong) cmd->destroy_bus.bus_no); |
12e364b9 KC |
1852 | bus_destroy(&inmsg); |
1853 | break; | |
1854 | case CONTROLVM_BUS_CONFIGURE: | |
2ea5117b | 1855 | LOGINF("BUS_CONFIGURE(%lu)", (ulong) cmd->configure_bus.bus_no); |
12e364b9 KC |
1856 | bus_configure(&inmsg, parser_ctx); |
1857 | break; | |
1858 | case CONTROLVM_DEVICE_CREATE: | |
1859 | LOGINF("DEVICE_CREATE(%lu,%lu)", | |
f91b9262 BR |
1860 | (ulong) cmd->create_device.bus_no, |
1861 | (ulong) cmd->create_device.dev_no); | |
12e364b9 KC |
1862 | my_device_create(&inmsg); |
1863 | break; | |
1864 | case CONTROLVM_DEVICE_CHANGESTATE: | |
2ea5117b | 1865 | if (cmd->device_change_state.flags.phys_device) { |
12e364b9 | 1866 | LOGINF("DEVICE_CHANGESTATE for physical device (%lu,%lu, active=%lu)", |
2ea5117b BR |
1867 | (ulong) cmd->device_change_state.bus_no, |
1868 | (ulong) cmd->device_change_state.dev_no, | |
1869 | (ulong) cmd->device_change_state.state.active); | |
12e364b9 KC |
1870 | parahotplug_process_message(&inmsg); |
1871 | } else { | |
1872 | LOGINF("DEVICE_CHANGESTATE for virtual device (%lu,%lu, state.Alive=0x%lx)", | |
2ea5117b BR |
1873 | (ulong) cmd->device_change_state.bus_no, |
1874 | (ulong) cmd->device_change_state.dev_no, | |
1875 | (ulong) cmd->device_change_state.state.alive); | |
12e364b9 KC |
1876 | /* save the hdr and cmd structures for later use */ |
1877 | /* when sending back the response to Command */ | |
1878 | my_device_changestate(&inmsg); | |
1879 | g_DiagMsgHdr = inmsg.hdr; | |
1880 | g_DeviceChangeStatePacket = inmsg.cmd; | |
1881 | break; | |
1882 | } | |
1883 | break; | |
1884 | case CONTROLVM_DEVICE_DESTROY: | |
1885 | LOGINF("DEVICE_DESTROY(%lu,%lu)", | |
2ea5117b BR |
1886 | (ulong) cmd->destroy_device.bus_no, |
1887 | (ulong) cmd->destroy_device.dev_no); | |
12e364b9 KC |
1888 | my_device_destroy(&inmsg); |
1889 | break; | |
1890 | case CONTROLVM_DEVICE_CONFIGURE: | |
1891 | LOGINF("DEVICE_CONFIGURE(%lu,%lu)", | |
e6ad00bb BR |
1892 | (ulong) cmd->configure_device.bus_no, |
1893 | (ulong) cmd->configure_device.dev_no); | |
12e364b9 | 1894 | /* no op for now, just send a respond that we passed */ |
98d7b594 | 1895 | if (inmsg.hdr.flags.response_expected) |
12e364b9 KC |
1896 | controlvm_respond(&inmsg.hdr, CONTROLVM_RESP_SUCCESS); |
1897 | break; | |
1898 | case CONTROLVM_CHIPSET_READY: | |
1899 | LOGINF("CHIPSET_READY"); | |
1900 | chipset_ready(&inmsg.hdr); | |
1901 | break; | |
1902 | case CONTROLVM_CHIPSET_SELFTEST: | |
1903 | LOGINF("CHIPSET_SELFTEST"); | |
1904 | chipset_selftest(&inmsg.hdr); | |
1905 | break; | |
1906 | case CONTROLVM_CHIPSET_STOP: | |
1907 | LOGINF("CHIPSET_STOP"); | |
1908 | chipset_notready(&inmsg.hdr); | |
1909 | break; | |
1910 | default: | |
98d7b594 BR |
1911 | LOGERR("unrecognized controlvm cmd=%d", (int) inmsg.hdr.id); |
1912 | if (inmsg.hdr.flags.response_expected) | |
12e364b9 KC |
1913 | controlvm_respond(&inmsg.hdr, |
1914 | -CONTROLVM_RESP_ERROR_MESSAGE_ID_UNKNOWN); | |
1915 | break; | |
1916 | } | |
1917 | ||
1918 | if (parser_ctx != NULL) { | |
1919 | parser_done(parser_ctx); | |
1920 | parser_ctx = NULL; | |
1921 | } | |
1922 | return TRUE; | |
1923 | } | |
1924 | ||
d746cb55 | 1925 | static HOSTADDRESS controlvm_get_channel_address(void) |
524b0b63 | 1926 | { |
5fc0229a | 1927 | u64 addr = 0; |
b3c55b13 | 1928 | u32 size = 0; |
524b0b63 | 1929 | |
74658c56 | 1930 | if (!VMCALL_SUCCESSFUL(issue_vmcall_io_controlvm_addr(&addr, &size))) { |
524b0b63 BR |
1931 | ERRDRV("%s - vmcall to determine controlvm channel addr failed", |
1932 | __func__); | |
1933 | return 0; | |
1934 | } | |
1935 | INFODRV("controlvm addr=%Lx", addr); | |
1936 | return addr; | |
1937 | } | |
1938 | ||
12e364b9 KC |
1939 | static void |
1940 | controlvm_periodic_work(struct work_struct *work) | |
1941 | { | |
9b1caee7 | 1942 | struct visorchipset_channel_info chanInfo; |
3ab47701 | 1943 | struct controlvm_message inmsg; |
12e364b9 KC |
1944 | BOOL gotACommand = FALSE; |
1945 | BOOL handle_command_failed = FALSE; | |
5fc0229a | 1946 | static u64 Poll_Count; |
12e364b9 KC |
1947 | |
1948 | /* make sure visorbus server is registered for controlvm callbacks */ | |
1949 | if (visorchipset_serverregwait && !serverregistered) | |
097f4c19 | 1950 | goto Away; |
12e364b9 KC |
1951 | /* make sure visorclientbus server is regsitered for controlvm |
1952 | * callbacks | |
1953 | */ | |
1954 | if (visorchipset_clientregwait && !clientregistered) | |
097f4c19 | 1955 | goto Away; |
12e364b9 | 1956 | |
9b1caee7 | 1957 | memset(&chanInfo, 0, sizeof(struct visorchipset_channel_info)); |
12e364b9 KC |
1958 | |
1959 | Poll_Count++; | |
8a1182eb | 1960 | if (Poll_Count >= 250) |
12e364b9 KC |
1961 | ; /* keep going */ |
1962 | else | |
097f4c19 | 1963 | goto Away; |
12e364b9 KC |
1964 | |
1965 | /* Check events to determine if response to CHIPSET_READY | |
1966 | * should be sent | |
1967 | */ | |
1968 | if (visorchipset_holdchipsetready | |
98d7b594 | 1969 | && (g_ChipSetMsgHdr.id != CONTROLVM_INVALID)) { |
12e364b9 KC |
1970 | if (check_chipset_events() == 1) { |
1971 | LOGINF("Sending CHIPSET_READY response"); | |
1972 | controlvm_respond(&g_ChipSetMsgHdr, 0); | |
1973 | clear_chipset_events(); | |
1974 | memset(&g_ChipSetMsgHdr, 0, | |
98d7b594 | 1975 | sizeof(struct controlvm_message_header)); |
12e364b9 KC |
1976 | } |
1977 | } | |
1978 | ||
8a1182eb BR |
1979 | while (visorchannel_signalremove(ControlVm_channel, |
1980 | CONTROLVM_QUEUE_RESPONSE, | |
1981 | &inmsg)) { | |
98d7b594 | 1982 | if (inmsg.hdr.payload_max_bytes != 0) { |
8a1182eb | 1983 | LOGERR("Payload of size %lu returned @%lu with unexpected message id %d.", |
98d7b594 BR |
1984 | (ulong) inmsg.hdr.payload_max_bytes, |
1985 | (ulong) inmsg.hdr.payload_vm_offset, | |
1986 | inmsg.hdr.id); | |
12e364b9 KC |
1987 | } |
1988 | } | |
8a1182eb BR |
1989 | if (!gotACommand) { |
1990 | if (ControlVm_Pending_Msg_Valid) { | |
1991 | /* we throttled processing of a prior | |
1992 | * msg, so try to process it again | |
1993 | * rather than reading a new one | |
1994 | */ | |
1995 | inmsg = ControlVm_Pending_Msg; | |
1996 | ControlVm_Pending_Msg_Valid = FALSE; | |
1997 | gotACommand = TRUE; | |
1998 | } else | |
1999 | gotACommand = read_controlvm_event(&inmsg); | |
2000 | } | |
12e364b9 KC |
2001 | |
2002 | handle_command_failed = FALSE; | |
2003 | while (gotACommand && (!handle_command_failed)) { | |
2004 | Most_recent_message_jiffies = jiffies; | |
8a1182eb BR |
2005 | if (handle_command(inmsg, |
2006 | visorchannel_get_physaddr | |
2007 | (ControlVm_channel))) | |
2008 | gotACommand = read_controlvm_event(&inmsg); | |
2009 | else { | |
2010 | /* this is a scenario where throttling | |
2011 | * is required, but probably NOT an | |
2012 | * error...; we stash the current | |
2013 | * controlvm msg so we will attempt to | |
2014 | * reprocess it on our next loop | |
2015 | */ | |
2016 | handle_command_failed = TRUE; | |
2017 | ControlVm_Pending_Msg = inmsg; | |
2018 | ControlVm_Pending_Msg_Valid = TRUE; | |
12e364b9 KC |
2019 | } |
2020 | } | |
2021 | ||
2022 | /* parahotplug_worker */ | |
2023 | parahotplug_process_list(); | |
2024 | ||
12e364b9 KC |
2025 | Away: |
2026 | ||
2027 | if (time_after(jiffies, | |
2028 | Most_recent_message_jiffies + (HZ * MIN_IDLE_SECONDS))) { | |
2029 | /* it's been longer than MIN_IDLE_SECONDS since we | |
2030 | * processed our last controlvm message; slow down the | |
2031 | * polling | |
2032 | */ | |
2033 | if (Poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_SLOW) { | |
2034 | LOGINF("switched to slow controlvm polling"); | |
2035 | Poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; | |
2036 | } | |
2037 | } else { | |
2038 | if (Poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_FAST) { | |
2039 | Poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; | |
2040 | LOGINF("switched to fast controlvm polling"); | |
2041 | } | |
2042 | } | |
2043 | ||
4b4b535e DY |
2044 | queue_delayed_work(Periodic_controlvm_workqueue, |
2045 | &Periodic_controlvm_work, Poll_jiffies); | |
12e364b9 KC |
2046 | } |
2047 | ||
2048 | static void | |
2049 | setup_crash_devices_work_queue(struct work_struct *work) | |
2050 | { | |
2051 | ||
3ab47701 BR |
2052 | struct controlvm_message localCrashCreateBusMsg; |
2053 | struct controlvm_message localCrashCreateDevMsg; | |
2054 | struct controlvm_message msg; | |
b3c55b13 | 2055 | u32 localSavedCrashMsgOffset; |
b06bdf7d | 2056 | u16 localSavedCrashMsgCount; |
12e364b9 KC |
2057 | |
2058 | /* make sure visorbus server is registered for controlvm callbacks */ | |
2059 | if (visorchipset_serverregwait && !serverregistered) | |
097f4c19 | 2060 | goto Away; |
12e364b9 KC |
2061 | |
2062 | /* make sure visorclientbus server is regsitered for controlvm | |
2063 | * callbacks | |
2064 | */ | |
2065 | if (visorchipset_clientregwait && !clientregistered) | |
097f4c19 | 2066 | goto Away; |
12e364b9 KC |
2067 | |
2068 | POSTCODE_LINUX_2(CRASH_DEV_ENTRY_PC, POSTCODE_SEVERITY_INFO); | |
2069 | ||
2070 | /* send init chipset msg */ | |
98d7b594 | 2071 | msg.hdr.id = CONTROLVM_CHIPSET_INIT; |
2ea5117b BR |
2072 | msg.cmd.init_chipset.bus_count = 23; |
2073 | msg.cmd.init_chipset.switch_count = 0; | |
12e364b9 KC |
2074 | |
2075 | chipset_init(&msg); | |
2076 | ||
12e364b9 KC |
2077 | /* get saved message count */ |
2078 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
2079 | offsetof(struct spar_controlvm_channel_protocol, |
2080 | saved_crash_message_count), | |
b06bdf7d | 2081 | &localSavedCrashMsgCount, sizeof(u16)) < 0) { |
12e364b9 KC |
2082 | LOGERR("failed to get Saved Message Count"); |
2083 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, | |
2084 | POSTCODE_SEVERITY_ERR); | |
2085 | return; | |
2086 | } | |
2087 | ||
2088 | if (localSavedCrashMsgCount != CONTROLVM_CRASHMSG_MAX) { | |
2089 | LOGERR("Saved Message Count incorrect %d", | |
2090 | localSavedCrashMsgCount); | |
2091 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, | |
2092 | localSavedCrashMsgCount, | |
2093 | POSTCODE_SEVERITY_ERR); | |
2094 | return; | |
2095 | } | |
2096 | ||
2097 | /* get saved crash message offset */ | |
2098 | if (visorchannel_read(ControlVm_channel, | |
d19642f6 BR |
2099 | offsetof(struct spar_controlvm_channel_protocol, |
2100 | saved_crash_message_offset), | |
b3c55b13 | 2101 | &localSavedCrashMsgOffset, sizeof(u32)) < 0) { |
12e364b9 KC |
2102 | LOGERR("failed to get Saved Message Offset"); |
2103 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, | |
2104 | POSTCODE_SEVERITY_ERR); | |
2105 | return; | |
2106 | } | |
2107 | ||
2108 | /* read create device message for storage bus offset */ | |
2109 | if (visorchannel_read(ControlVm_channel, | |
2110 | localSavedCrashMsgOffset, | |
2111 | &localCrashCreateBusMsg, | |
3ab47701 | 2112 | sizeof(struct controlvm_message)) < 0) { |
12e364b9 KC |
2113 | LOGERR("CRASH_DEV_RD_BUS_FAIULRE: Failed to read CrashCreateBusMsg!"); |
2114 | POSTCODE_LINUX_2(CRASH_DEV_RD_BUS_FAIULRE_PC, | |
2115 | POSTCODE_SEVERITY_ERR); | |
2116 | return; | |
2117 | } | |
2118 | ||
2119 | /* read create device message for storage device */ | |
2120 | if (visorchannel_read(ControlVm_channel, | |
2121 | localSavedCrashMsgOffset + | |
3ab47701 | 2122 | sizeof(struct controlvm_message), |
12e364b9 | 2123 | &localCrashCreateDevMsg, |
3ab47701 | 2124 | sizeof(struct controlvm_message)) < 0) { |
12e364b9 KC |
2125 | LOGERR("CRASH_DEV_RD_DEV_FAIULRE: Failed to read CrashCreateDevMsg!"); |
2126 | POSTCODE_LINUX_2(CRASH_DEV_RD_DEV_FAIULRE_PC, | |
2127 | POSTCODE_SEVERITY_ERR); | |
2128 | return; | |
2129 | } | |
2130 | ||
2131 | /* reuse IOVM create bus message */ | |
2ea5117b | 2132 | if (localCrashCreateBusMsg.cmd.create_bus.channel_addr != 0) |
12e364b9 KC |
2133 | bus_create(&localCrashCreateBusMsg); |
2134 | else { | |
2135 | LOGERR("CrashCreateBusMsg is null, no dump will be taken"); | |
2136 | POSTCODE_LINUX_2(CRASH_DEV_BUS_NULL_FAILURE_PC, | |
2137 | POSTCODE_SEVERITY_ERR); | |
2138 | return; | |
2139 | } | |
2140 | ||
2141 | /* reuse create device message for storage device */ | |
f91b9262 | 2142 | if (localCrashCreateDevMsg.cmd.create_device.channel_addr != 0) |
12e364b9 KC |
2143 | my_device_create(&localCrashCreateDevMsg); |
2144 | else { | |
2145 | LOGERR("CrashCreateDevMsg is null, no dump will be taken"); | |
2146 | POSTCODE_LINUX_2(CRASH_DEV_DEV_NULL_FAILURE_PC, | |
2147 | POSTCODE_SEVERITY_ERR); | |
2148 | return; | |
2149 | } | |
2150 | LOGINF("Bus and device ready for dumping"); | |
2151 | POSTCODE_LINUX_2(CRASH_DEV_EXIT_PC, POSTCODE_SEVERITY_INFO); | |
2152 | return; | |
2153 | ||
2154 | Away: | |
2155 | ||
2156 | Poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; | |
2157 | ||
4b4b535e DY |
2158 | queue_delayed_work(Periodic_controlvm_workqueue, |
2159 | &Periodic_controlvm_work, Poll_jiffies); | |
12e364b9 KC |
2160 | } |
2161 | ||
2162 | static void | |
2163 | bus_create_response(ulong busNo, int response) | |
2164 | { | |
2165 | bus_responder(CONTROLVM_BUS_CREATE, busNo, response); | |
2166 | } | |
2167 | ||
2168 | static void | |
2169 | bus_destroy_response(ulong busNo, int response) | |
2170 | { | |
2171 | bus_responder(CONTROLVM_BUS_DESTROY, busNo, response); | |
2172 | } | |
2173 | ||
2174 | static void | |
2175 | device_create_response(ulong busNo, ulong devNo, int response) | |
2176 | { | |
2177 | device_responder(CONTROLVM_DEVICE_CREATE, busNo, devNo, response); | |
2178 | } | |
2179 | ||
2180 | static void | |
2181 | device_destroy_response(ulong busNo, ulong devNo, int response) | |
2182 | { | |
2183 | device_responder(CONTROLVM_DEVICE_DESTROY, busNo, devNo, response); | |
2184 | } | |
2185 | ||
2186 | void | |
927c7927 | 2187 | visorchipset_device_pause_response(ulong busNo, ulong devNo, int response) |
12e364b9 KC |
2188 | { |
2189 | ||
2190 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, | |
2191 | busNo, devNo, response, | |
bd0d2dcc | 2192 | segment_state_standby); |
12e364b9 | 2193 | } |
927c7927 | 2194 | EXPORT_SYMBOL_GPL(visorchipset_device_pause_response); |
12e364b9 KC |
2195 | |
2196 | static void | |
2197 | device_resume_response(ulong busNo, ulong devNo, int response) | |
2198 | { | |
2199 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, | |
2200 | busNo, devNo, response, | |
bd0d2dcc | 2201 | segment_state_running); |
12e364b9 KC |
2202 | } |
2203 | ||
2204 | BOOL | |
33192fa1 | 2205 | visorchipset_get_bus_info(ulong busNo, struct visorchipset_bus_info *busInfo) |
12e364b9 KC |
2206 | { |
2207 | void *p = findbus(&BusInfoList, busNo); | |
26eb2c0c | 2208 | |
12e364b9 KC |
2209 | if (!p) { |
2210 | LOGERR("(%lu) failed", busNo); | |
2211 | return FALSE; | |
2212 | } | |
33192fa1 | 2213 | memcpy(busInfo, p, sizeof(struct visorchipset_bus_info)); |
12e364b9 KC |
2214 | return TRUE; |
2215 | } | |
2216 | EXPORT_SYMBOL_GPL(visorchipset_get_bus_info); | |
2217 | ||
2218 | BOOL | |
2219 | visorchipset_set_bus_context(ulong busNo, void *context) | |
2220 | { | |
33192fa1 | 2221 | struct visorchipset_bus_info *p = findbus(&BusInfoList, busNo); |
26eb2c0c | 2222 | |
12e364b9 KC |
2223 | if (!p) { |
2224 | LOGERR("(%lu) failed", busNo); | |
2225 | return FALSE; | |
2226 | } | |
2227 | p->bus_driver_context = context; | |
2228 | return TRUE; | |
2229 | } | |
2230 | EXPORT_SYMBOL_GPL(visorchipset_set_bus_context); | |
2231 | ||
2232 | BOOL | |
2233 | visorchipset_get_device_info(ulong busNo, ulong devNo, | |
246e0cd0 | 2234 | struct visorchipset_device_info *devInfo) |
12e364b9 KC |
2235 | { |
2236 | void *p = finddevice(&DevInfoList, busNo, devNo); | |
26eb2c0c | 2237 | |
12e364b9 KC |
2238 | if (!p) { |
2239 | LOGERR("(%lu,%lu) failed", busNo, devNo); | |
2240 | return FALSE; | |
2241 | } | |
246e0cd0 | 2242 | memcpy(devInfo, p, sizeof(struct visorchipset_device_info)); |
12e364b9 KC |
2243 | return TRUE; |
2244 | } | |
2245 | EXPORT_SYMBOL_GPL(visorchipset_get_device_info); | |
2246 | ||
2247 | BOOL | |
2248 | visorchipset_set_device_context(ulong busNo, ulong devNo, void *context) | |
2249 | { | |
246e0cd0 BR |
2250 | struct visorchipset_device_info *p = |
2251 | finddevice(&DevInfoList, busNo, devNo); | |
26eb2c0c | 2252 | |
12e364b9 KC |
2253 | if (!p) { |
2254 | LOGERR("(%lu,%lu) failed", busNo, devNo); | |
2255 | return FALSE; | |
2256 | } | |
2257 | p->bus_driver_context = context; | |
2258 | return TRUE; | |
2259 | } | |
2260 | EXPORT_SYMBOL_GPL(visorchipset_set_device_context); | |
2261 | ||
2262 | /* Generic wrapper function for allocating memory from a kmem_cache pool. | |
2263 | */ | |
2264 | void * | |
2265 | visorchipset_cache_alloc(struct kmem_cache *pool, BOOL ok_to_block, | |
2266 | char *fn, int ln) | |
2267 | { | |
2268 | gfp_t gfp; | |
2269 | void *p; | |
2270 | ||
2271 | if (ok_to_block) | |
2272 | gfp = GFP_KERNEL; | |
2273 | else | |
2274 | gfp = GFP_ATOMIC; | |
2275 | /* __GFP_NORETRY means "ok to fail", meaning | |
2276 | * kmem_cache_alloc() can return NULL, implying the caller CAN | |
2277 | * cope with failure. If you do NOT specify __GFP_NORETRY, | |
2278 | * Linux will go to extreme measures to get memory for you | |
2279 | * (like, invoke oom killer), which will probably cripple the | |
2280 | * system. | |
2281 | */ | |
2282 | gfp |= __GFP_NORETRY; | |
2283 | p = kmem_cache_alloc(pool, gfp); | |
2284 | if (!p) { | |
2285 | LOGERR("kmem_cache_alloc failed early @%s:%d\n", fn, ln); | |
2286 | return NULL; | |
2287 | } | |
2288 | atomic_inc(&Visorchipset_cache_buffers_in_use); | |
2289 | return p; | |
2290 | } | |
2291 | ||
2292 | /* Generic wrapper function for freeing memory from a kmem_cache pool. | |
2293 | */ | |
2294 | void | |
2295 | visorchipset_cache_free(struct kmem_cache *pool, void *p, char *fn, int ln) | |
2296 | { | |
2297 | if (!p) { | |
2298 | LOGERR("NULL pointer @%s:%d\n", fn, ln); | |
2299 | return; | |
2300 | } | |
2301 | atomic_dec(&Visorchipset_cache_buffers_in_use); | |
2302 | kmem_cache_free(pool, p); | |
2303 | } | |
2304 | ||
18b87ed1 BR |
2305 | static ssize_t chipsetready_store(struct device *dev, |
2306 | struct device_attribute *attr, const char *buf, size_t count) | |
12e364b9 | 2307 | { |
18b87ed1 | 2308 | char msgtype[64]; |
12e364b9 | 2309 | |
66e24b76 BR |
2310 | if (sscanf(buf, "%63s", msgtype) != 1) |
2311 | return -EINVAL; | |
2312 | ||
2313 | if (strcmp(msgtype, "CALLHOMEDISK_MOUNTED") == 0) { | |
2314 | chipset_events[0] = 1; | |
2315 | return count; | |
2316 | } else if (strcmp(msgtype, "MODULES_LOADED") == 0) { | |
2317 | chipset_events[1] = 1; | |
2318 | return count; | |
e22a4a0f BR |
2319 | } |
2320 | return -EINVAL; | |
12e364b9 KC |
2321 | } |
2322 | ||
e56fa7cd BR |
2323 | /* The parahotplug/devicedisabled interface gets called by our support script |
2324 | * when an SR-IOV device has been shut down. The ID is passed to the script | |
2325 | * and then passed back when the device has been removed. | |
2326 | */ | |
2327 | static ssize_t devicedisabled_store(struct device *dev, | |
2328 | struct device_attribute *attr, const char *buf, size_t count) | |
2329 | { | |
2330 | uint id; | |
2331 | ||
2332 | if (kstrtouint(buf, 10, &id) != 0) | |
2333 | return -EINVAL; | |
2334 | ||
2335 | parahotplug_request_complete(id, 0); | |
2336 | return count; | |
2337 | } | |
2338 | ||
2339 | /* The parahotplug/deviceenabled interface gets called by our support script | |
2340 | * when an SR-IOV device has been recovered. The ID is passed to the script | |
2341 | * and then passed back when the device has been brought back up. | |
2342 | */ | |
2343 | static ssize_t deviceenabled_store(struct device *dev, | |
2344 | struct device_attribute *attr, const char *buf, size_t count) | |
2345 | { | |
2346 | uint id; | |
2347 | ||
2348 | if (kstrtouint(buf, 10, &id) != 0) | |
2349 | return -EINVAL; | |
2350 | ||
2351 | parahotplug_request_complete(id, 1); | |
2352 | return count; | |
2353 | } | |
2354 | ||
12e364b9 KC |
2355 | static int __init |
2356 | visorchipset_init(void) | |
2357 | { | |
2358 | int rc = 0, x = 0; | |
8a1182eb | 2359 | char s[64]; |
8a1182eb | 2360 | HOSTADDRESS addr; |
12e364b9 | 2361 | |
fcd0157e KC |
2362 | if (!unisys_spar_platform) |
2363 | return -ENODEV; | |
2364 | ||
12e364b9 KC |
2365 | LOGINF("chipset driver version %s loaded", VERSION); |
2366 | /* process module options */ | |
2367 | POSTCODE_LINUX_2(DRIVER_ENTRY_PC, POSTCODE_SEVERITY_INFO); | |
2368 | ||
2369 | LOGINF("option - testvnic=%d", visorchipset_testvnic); | |
2370 | LOGINF("option - testvnicclient=%d", visorchipset_testvnicclient); | |
2371 | LOGINF("option - testmsg=%d", visorchipset_testmsg); | |
2372 | LOGINF("option - testteardown=%d", visorchipset_testteardown); | |
2373 | LOGINF("option - major=%d", visorchipset_major); | |
2374 | LOGINF("option - serverregwait=%d", visorchipset_serverregwait); | |
2375 | LOGINF("option - clientregwait=%d", visorchipset_clientregwait); | |
2376 | LOGINF("option - holdchipsetready=%d", visorchipset_holdchipsetready); | |
2377 | ||
2378 | memset(&BusDev_Server_Notifiers, 0, sizeof(BusDev_Server_Notifiers)); | |
2379 | memset(&BusDev_Client_Notifiers, 0, sizeof(BusDev_Client_Notifiers)); | |
2380 | memset(&ControlVm_payload_info, 0, sizeof(ControlVm_payload_info)); | |
2381 | memset(&LiveDump_info, 0, sizeof(LiveDump_info)); | |
2382 | atomic_set(&LiveDump_info.buffers_in_use, 0); | |
2383 | ||
9f8d0e8b KC |
2384 | if (visorchipset_testvnic) { |
2385 | ERRDRV("testvnic option no longer supported: (status = %d)\n", | |
2386 | x); | |
2387 | POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, x, DIAG_SEVERITY_ERR); | |
2388 | rc = x; | |
2389 | goto Away; | |
2390 | } | |
12e364b9 | 2391 | |
8a1182eb BR |
2392 | addr = controlvm_get_channel_address(); |
2393 | if (addr != 0) { | |
2394 | ControlVm_channel = | |
2395 | visorchannel_create_with_lock | |
2396 | (addr, | |
d19642f6 | 2397 | sizeof(struct spar_controlvm_channel_protocol), |
5fbaa4b3 | 2398 | spar_controlvm_channel_protocol_uuid); |
93a84565 BR |
2399 | if (SPAR_CONTROLVM_CHANNEL_OK_CLIENT( |
2400 | visorchannel_get_header(ControlVm_channel))) { | |
8a1182eb BR |
2401 | LOGINF("Channel %s (ControlVm) discovered", |
2402 | visorchannel_id(ControlVm_channel, s)); | |
2403 | initialize_controlvm_payload(); | |
2404 | } else { | |
2405 | LOGERR("controlvm channel is invalid"); | |
2406 | visorchannel_destroy(ControlVm_channel); | |
2407 | ControlVm_channel = NULL; | |
2408 | return -ENODEV; | |
2409 | } | |
2410 | } else { | |
2411 | LOGERR("no controlvm channel discovered"); | |
2412 | return -ENODEV; | |
2413 | } | |
2414 | ||
12e364b9 | 2415 | MajorDev = MKDEV(visorchipset_major, 0); |
9f8d0e8b | 2416 | rc = visorchipset_file_init(MajorDev, &ControlVm_channel); |
4cb005a9 KC |
2417 | if (rc < 0) { |
2418 | ERRDRV("visorchipset_file_init(MajorDev, &ControlVm_channel): error (status=%d)\n", rc); | |
2419 | POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC, DIAG_SEVERITY_ERR); | |
2420 | goto Away; | |
2421 | } | |
9f8d0e8b | 2422 | |
98d7b594 | 2423 | memset(&g_DiagMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2424 | |
98d7b594 | 2425 | memset(&g_ChipSetMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2426 | |
98d7b594 | 2427 | memset(&g_DelDumpMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2428 | |
12e364b9 KC |
2429 | Putfile_buffer_list_pool = |
2430 | kmem_cache_create(Putfile_buffer_list_pool_name, | |
2431 | sizeof(struct putfile_buffer_entry), | |
2432 | 0, SLAB_HWCACHE_ALIGN, NULL); | |
2433 | if (!Putfile_buffer_list_pool) { | |
4cb005a9 KC |
2434 | ERRDRV("failed to alloc Putfile_buffer_list_pool: (status=-1)\n"); |
2435 | POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC, DIAG_SEVERITY_ERR); | |
2436 | rc = -1; | |
2437 | goto Away; | |
12e364b9 KC |
2438 | } |
2439 | if (visorchipset_disable_controlvm) { | |
2440 | LOGINF("visorchipset_init:controlvm disabled"); | |
2441 | } else { | |
2442 | /* if booting in a crash kernel */ | |
2443 | if (visorchipset_crash_kernel) | |
2444 | INIT_DELAYED_WORK(&Periodic_controlvm_work, | |
2445 | setup_crash_devices_work_queue); | |
2446 | else | |
2447 | INIT_DELAYED_WORK(&Periodic_controlvm_work, | |
2448 | controlvm_periodic_work); | |
2449 | Periodic_controlvm_workqueue = | |
2450 | create_singlethread_workqueue("visorchipset_controlvm"); | |
2451 | ||
4cb005a9 KC |
2452 | if (Periodic_controlvm_workqueue == NULL) { |
2453 | ERRDRV("cannot create controlvm workqueue: (status=%d)\n", | |
2454 | -ENOMEM); | |
2455 | POSTCODE_LINUX_2(CREATE_WORKQUEUE_FAILED_PC, | |
2456 | DIAG_SEVERITY_ERR); | |
2457 | rc = -ENOMEM; | |
2458 | goto Away; | |
2459 | } | |
12e364b9 KC |
2460 | Most_recent_message_jiffies = jiffies; |
2461 | Poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; | |
9f8d0e8b KC |
2462 | rc = queue_delayed_work(Periodic_controlvm_workqueue, |
2463 | &Periodic_controlvm_work, Poll_jiffies); | |
4cb005a9 KC |
2464 | if (rc < 0) { |
2465 | ERRDRV("queue_delayed_work(Periodic_controlvm_workqueue, &Periodic_controlvm_work, Poll_jiffies): error (status=%d)\n", rc); | |
2466 | POSTCODE_LINUX_2(QUEUE_DELAYED_WORK_PC, | |
2467 | DIAG_SEVERITY_ERR); | |
2468 | goto Away; | |
2469 | } | |
9f8d0e8b | 2470 | |
12e364b9 KC |
2471 | } |
2472 | ||
2473 | Visorchipset_platform_device.dev.devt = MajorDev; | |
4cb005a9 KC |
2474 | if (platform_device_register(&Visorchipset_platform_device) < 0) { |
2475 | ERRDRV("platform_device_register(visorchipset) failed: (status=-1)\n"); | |
2476 | POSTCODE_LINUX_2(DEVICE_REGISTER_FAILURE_PC, DIAG_SEVERITY_ERR); | |
2477 | rc = -1; | |
2478 | goto Away; | |
2479 | } | |
12e364b9 KC |
2480 | LOGINF("visorchipset device created"); |
2481 | POSTCODE_LINUX_2(CHIPSET_INIT_SUCCESS_PC, POSTCODE_SEVERITY_INFO); | |
22ad57ba | 2482 | rc = 0; |
12e364b9 | 2483 | Away: |
12e364b9 KC |
2484 | if (rc) { |
2485 | LOGERR("visorchipset_init failed"); | |
2486 | POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, rc, | |
2487 | POSTCODE_SEVERITY_ERR); | |
2488 | } | |
2489 | return rc; | |
2490 | } | |
2491 | ||
2492 | static void | |
2493 | visorchipset_exit(void) | |
2494 | { | |
2495 | char s[99]; | |
26eb2c0c | 2496 | |
12e364b9 KC |
2497 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); |
2498 | ||
2499 | if (visorchipset_disable_controlvm) { | |
2500 | ; | |
2501 | } else { | |
2502 | cancel_delayed_work(&Periodic_controlvm_work); | |
2503 | flush_workqueue(Periodic_controlvm_workqueue); | |
2504 | destroy_workqueue(Periodic_controlvm_workqueue); | |
2505 | Periodic_controlvm_workqueue = NULL; | |
2506 | destroy_controlvm_payload_info(&ControlVm_payload_info); | |
2507 | } | |
2508 | Test_Vnic_channel = NULL; | |
2509 | if (Putfile_buffer_list_pool) { | |
2510 | kmem_cache_destroy(Putfile_buffer_list_pool); | |
2511 | Putfile_buffer_list_pool = NULL; | |
2512 | } | |
1783319f | 2513 | |
12e364b9 KC |
2514 | cleanup_controlvm_structures(); |
2515 | ||
98d7b594 | 2516 | memset(&g_DiagMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2517 | |
98d7b594 | 2518 | memset(&g_ChipSetMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2519 | |
98d7b594 | 2520 | memset(&g_DelDumpMsgHdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2521 | |
8a1182eb BR |
2522 | LOGINF("Channel %s (ControlVm) disconnected", |
2523 | visorchannel_id(ControlVm_channel, s)); | |
2524 | visorchannel_destroy(ControlVm_channel); | |
2525 | ||
12e364b9 KC |
2526 | visorchipset_file_cleanup(); |
2527 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); | |
2528 | LOGINF("chipset driver unloaded"); | |
2529 | } | |
2530 | ||
2531 | module_param_named(testvnic, visorchipset_testvnic, int, S_IRUGO); | |
2532 | MODULE_PARM_DESC(visorchipset_testvnic, "1 to test vnic, using dummy VNIC connected via a loopback to a physical ethernet"); | |
2533 | int visorchipset_testvnic = 0; | |
2534 | ||
2535 | module_param_named(testvnicclient, visorchipset_testvnicclient, int, S_IRUGO); | |
2536 | MODULE_PARM_DESC(visorchipset_testvnicclient, "1 to test vnic, using real VNIC channel attached to a separate IOVM guest"); | |
2537 | int visorchipset_testvnicclient = 0; | |
2538 | ||
2539 | module_param_named(testmsg, visorchipset_testmsg, int, S_IRUGO); | |
2540 | MODULE_PARM_DESC(visorchipset_testmsg, | |
2541 | "1 to manufacture the chipset, bus, and switch messages"); | |
2542 | int visorchipset_testmsg = 0; | |
2543 | ||
2544 | module_param_named(major, visorchipset_major, int, S_IRUGO); | |
2545 | MODULE_PARM_DESC(visorchipset_major, "major device number to use for the device node"); | |
2546 | int visorchipset_major = 0; | |
2547 | ||
2548 | module_param_named(serverregwait, visorchipset_serverregwait, int, S_IRUGO); | |
2549 | MODULE_PARM_DESC(visorchipset_serverreqwait, | |
2550 | "1 to have the module wait for the visor bus to register"); | |
2551 | int visorchipset_serverregwait = 0; /* default is off */ | |
2552 | module_param_named(clientregwait, visorchipset_clientregwait, int, S_IRUGO); | |
2553 | MODULE_PARM_DESC(visorchipset_clientregwait, "1 to have the module wait for the visorclientbus to register"); | |
2554 | int visorchipset_clientregwait = 1; /* default is on */ | |
2555 | module_param_named(testteardown, visorchipset_testteardown, int, S_IRUGO); | |
2556 | MODULE_PARM_DESC(visorchipset_testteardown, | |
2557 | "1 to test teardown of the chipset, bus, and switch"); | |
2558 | int visorchipset_testteardown = 0; /* default is off */ | |
2559 | module_param_named(disable_controlvm, visorchipset_disable_controlvm, int, | |
2560 | S_IRUGO); | |
2561 | MODULE_PARM_DESC(visorchipset_disable_controlvm, | |
2562 | "1 to disable polling of controlVm channel"); | |
2563 | int visorchipset_disable_controlvm = 0; /* default is off */ | |
2564 | module_param_named(crash_kernel, visorchipset_crash_kernel, int, S_IRUGO); | |
2565 | MODULE_PARM_DESC(visorchipset_crash_kernel, | |
2566 | "1 means we are running in crash kernel"); | |
2567 | int visorchipset_crash_kernel = 0; /* default is running in non-crash kernel */ | |
2568 | module_param_named(holdchipsetready, visorchipset_holdchipsetready, | |
2569 | int, S_IRUGO); | |
2570 | MODULE_PARM_DESC(visorchipset_holdchipsetready, | |
2571 | "1 to hold response to CHIPSET_READY"); | |
2572 | int visorchipset_holdchipsetready = 0; /* default is to send CHIPSET_READY | |
2573 | * response immediately */ | |
2574 | module_init(visorchipset_init); | |
2575 | module_exit(visorchipset_exit); | |
2576 | ||
2577 | MODULE_AUTHOR("Unisys"); | |
2578 | MODULE_LICENSE("GPL"); | |
2579 | MODULE_DESCRIPTION("Supervisor chipset driver for service partition: ver " | |
2580 | VERSION); | |
2581 | MODULE_VERSION(VERSION); |