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12e364b9 KC |
1 | /* visorchipset_main.c |
2 | * | |
f6d0c1e6 | 3 | * Copyright (C) 2010 - 2013 UNISYS CORPORATION |
12e364b9 KC |
4 | * All rights reserved. |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or (at | |
9 | * your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
14 | * NON INFRINGEMENT. See the GNU General Public License for more | |
15 | * details. | |
16 | */ | |
17 | ||
46168810 EA |
18 | #include "memregion.h" |
19 | #include "controlvmchannel.h" | |
7023638c | 20 | #include "version.h" |
12e364b9 | 21 | #include "procobjecttree.h" |
f6439218 | 22 | #include "visorbus.h" |
12e364b9 | 23 | #include "periodic_work.h" |
12e364b9 | 24 | #include "uisutils.h" |
12e364b9 KC |
25 | #include "controlvmcompletionstatus.h" |
26 | #include "guestlinuxdebug.h" | |
c79b28f7 | 27 | #include "visorbus_private.h" |
12e364b9 | 28 | |
46168810 EA |
29 | |
30 | #include <linux/ctype.h> | |
e3420ed6 EA |
31 | #include <linux/fs.h> |
32 | #include <linux/mm.h> | |
12e364b9 KC |
33 | #include <linux/nls.h> |
34 | #include <linux/netdevice.h> | |
35 | #include <linux/platform_device.h> | |
90addb02 | 36 | #include <linux/uuid.h> |
1ba00980 | 37 | #include <linux/crash_dump.h> |
12e364b9 KC |
38 | |
39 | #define CURRENT_FILE_PC VISOR_CHIPSET_PC_visorchipset_main_c | |
40 | #define TEST_VNIC_PHYSITF "eth0" /* physical network itf for | |
41 | * vnic loopback test */ | |
42 | #define TEST_VNIC_SWITCHNO 1 | |
43 | #define TEST_VNIC_BUSNO 9 | |
44 | ||
45 | #define MAX_NAME_SIZE 128 | |
46 | #define MAX_IP_SIZE 50 | |
47 | #define MAXOUTSTANDINGCHANNELCOMMAND 256 | |
48 | #define POLLJIFFIES_CONTROLVMCHANNEL_FAST 1 | |
49 | #define POLLJIFFIES_CONTROLVMCHANNEL_SLOW 100 | |
50 | ||
46168810 | 51 | #define MAX_CONTROLVM_PAYLOAD_BYTES (1024*128) |
b615d628 JS |
52 | /* |
53 | * Module parameters | |
54 | */ | |
55 | static int visorchipset_testvnic; | |
56 | static int visorchipset_testvnicclient; | |
57 | static int visorchipset_testmsg; | |
58 | static int visorchipset_major; | |
59 | static int visorchipset_serverregwait; | |
60 | static int visorchipset_clientregwait = 1; /* default is on */ | |
61 | static int visorchipset_testteardown; | |
62 | static int visorchipset_disable_controlvm; | |
63 | static int visorchipset_holdchipsetready; | |
46168810 | 64 | static unsigned long controlvm_payload_bytes_buffered; |
b615d628 | 65 | |
e3420ed6 EA |
66 | static int |
67 | visorchipset_open(struct inode *inode, struct file *file) | |
68 | { | |
69 | unsigned minor_number = iminor(inode); | |
70 | ||
71 | if (minor_number) | |
72 | return -ENODEV; | |
73 | file->private_data = NULL; | |
74 | return 0; | |
75 | } | |
76 | ||
77 | static int | |
78 | visorchipset_release(struct inode *inode, struct file *file) | |
79 | { | |
80 | return 0; | |
81 | } | |
82 | ||
12e364b9 KC |
83 | /* When the controlvm channel is idle for at least MIN_IDLE_SECONDS, |
84 | * we switch to slow polling mode. As soon as we get a controlvm | |
85 | * message, we switch back to fast polling mode. | |
86 | */ | |
87 | #define MIN_IDLE_SECONDS 10 | |
52063eca JS |
88 | static unsigned long poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; |
89 | static unsigned long most_recent_message_jiffies; /* when we got our last | |
bd5b9b32 | 90 | * controlvm message */ |
12e364b9 KC |
91 | static int serverregistered; |
92 | static int clientregistered; | |
93 | ||
94 | #define MAX_CHIPSET_EVENTS 2 | |
c242233e | 95 | static u8 chipset_events[MAX_CHIPSET_EVENTS] = { 0, 0 }; |
12e364b9 | 96 | |
46168810 EA |
97 | struct parser_context { |
98 | unsigned long allocbytes; | |
99 | unsigned long param_bytes; | |
100 | u8 *curr; | |
101 | unsigned long bytes_remaining; | |
102 | bool byte_stream; | |
103 | char data[0]; | |
104 | }; | |
105 | ||
9232d2d6 BR |
106 | static struct delayed_work periodic_controlvm_work; |
107 | static struct workqueue_struct *periodic_controlvm_workqueue; | |
8f1947ac | 108 | static DEFINE_SEMAPHORE(notifier_lock); |
12e364b9 | 109 | |
e3420ed6 EA |
110 | static struct cdev file_cdev; |
111 | static struct visorchannel **file_controlvm_channel; | |
da021f02 | 112 | static struct controlvm_message_header g_chipset_msg_hdr; |
59827f00 | 113 | static const uuid_le spar_diag_pool_channel_protocol_uuid = |
9eee5d1f | 114 | SPAR_DIAG_POOL_CHANNEL_PROTOCOL_UUID; |
12e364b9 | 115 | /* 0xffffff is an invalid Bus/Device number */ |
52063eca JS |
116 | static u32 g_diagpool_bus_no = 0xffffff; |
117 | static u32 g_diagpool_dev_no = 0xffffff; | |
4f44b72d | 118 | static struct controlvm_message_packet g_devicechangestate_packet; |
12e364b9 KC |
119 | |
120 | /* Only VNIC and VHBA channels are sent to visorclientbus (aka | |
121 | * "visorhackbus") | |
122 | */ | |
123 | #define FOR_VISORHACKBUS(channel_type_guid) \ | |
9eee5d1f | 124 | (((uuid_le_cmp(channel_type_guid,\ |
0639ba67 BR |
125 | spar_vnic_channel_protocol_uuid) == 0) ||\ |
126 | (uuid_le_cmp(channel_type_guid,\ | |
9eee5d1f | 127 | spar_vhba_channel_protocol_uuid) == 0))) |
12e364b9 KC |
128 | #define FOR_VISORBUS(channel_type_guid) (!(FOR_VISORHACKBUS(channel_type_guid))) |
129 | ||
130 | #define is_diagpool_channel(channel_type_guid) \ | |
59827f00 BR |
131 | (uuid_le_cmp(channel_type_guid,\ |
132 | spar_diag_pool_channel_protocol_uuid) == 0) | |
12e364b9 | 133 | |
1390b88c BR |
134 | static LIST_HEAD(bus_info_list); |
135 | static LIST_HEAD(dev_info_list); | |
12e364b9 | 136 | |
c3d9a224 | 137 | static struct visorchannel *controlvm_channel; |
12e364b9 | 138 | |
84982fbf | 139 | /* Manages the request payload in the controlvm channel */ |
c1f834eb | 140 | struct visor_controlvm_payload_info { |
c242233e | 141 | u8 __iomem *ptr; /* pointer to base address of payload pool */ |
5fc0229a | 142 | u64 offset; /* offset from beginning of controlvm |
12e364b9 | 143 | * channel to beginning of payload * pool */ |
b3c55b13 | 144 | u32 bytes; /* number of bytes in payload pool */ |
c1f834eb JS |
145 | }; |
146 | ||
147 | static struct visor_controlvm_payload_info controlvm_payload_info; | |
12e364b9 | 148 | |
ea33b4ee BR |
149 | /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE / |
150 | * CONTROLVM_DUMP_GETTEXTDUMP / CONTROLVM_DUMP_COMPLETE conversation. | |
151 | */ | |
c1f834eb | 152 | struct visor_livedump_info { |
ea33b4ee BR |
153 | struct controlvm_message_header dumpcapture_header; |
154 | struct controlvm_message_header gettextdump_header; | |
155 | struct controlvm_message_header dumpcomplete_header; | |
f4c11551 | 156 | bool gettextdump_outstanding; |
12e364b9 | 157 | u32 crc32; |
52063eca | 158 | unsigned long length; |
12e364b9 | 159 | atomic_t buffers_in_use; |
52063eca | 160 | unsigned long destination; |
c1f834eb JS |
161 | }; |
162 | ||
163 | static struct visor_livedump_info livedump_info; | |
12e364b9 KC |
164 | |
165 | /* The following globals are used to handle the scenario where we are unable to | |
166 | * offload the payload from a controlvm message due to memory requirements. In | |
167 | * this scenario, we simply stash the controlvm message, then attempt to | |
168 | * process it again the next time controlvm_periodic_work() runs. | |
169 | */ | |
7166ed19 | 170 | static struct controlvm_message controlvm_pending_msg; |
c79b28f7 | 171 | static bool controlvm_pending_msg_valid; |
12e364b9 | 172 | |
12e364b9 KC |
173 | /* This identifies a data buffer that has been received via a controlvm messages |
174 | * in a remote --> local CONTROLVM_TRANSMIT_FILE conversation. | |
175 | */ | |
176 | struct putfile_buffer_entry { | |
177 | struct list_head next; /* putfile_buffer_entry list */ | |
317d9614 | 178 | struct parser_context *parser_ctx; /* points to input data buffer */ |
12e364b9 KC |
179 | }; |
180 | ||
181 | /* List of struct putfile_request *, via next_putfile_request member. | |
182 | * Each entry in this list identifies an outstanding TRANSMIT_FILE | |
183 | * conversation. | |
184 | */ | |
1eee0011 | 185 | static LIST_HEAD(putfile_request_list); |
12e364b9 KC |
186 | |
187 | /* This describes a buffer and its current state of transfer (e.g., how many | |
188 | * bytes have already been supplied as putfile data, and how many bytes are | |
189 | * remaining) for a putfile_request. | |
190 | */ | |
191 | struct putfile_active_buffer { | |
192 | /* a payload from a controlvm message, containing a file data buffer */ | |
317d9614 | 193 | struct parser_context *parser_ctx; |
12e364b9 KC |
194 | /* points within data area of parser_ctx to next byte of data */ |
195 | u8 *pnext; | |
196 | /* # bytes left from <pnext> to the end of this data buffer */ | |
197 | size_t bytes_remaining; | |
198 | }; | |
199 | ||
200 | #define PUTFILE_REQUEST_SIG 0x0906101302281211 | |
201 | /* This identifies a single remote --> local CONTROLVM_TRANSMIT_FILE | |
202 | * conversation. Structs of this type are dynamically linked into | |
203 | * <Putfile_request_list>. | |
204 | */ | |
205 | struct putfile_request { | |
206 | u64 sig; /* PUTFILE_REQUEST_SIG */ | |
207 | ||
208 | /* header from original TransmitFile request */ | |
98d7b594 | 209 | struct controlvm_message_header controlvm_header; |
12e364b9 KC |
210 | u64 file_request_number; /* from original TransmitFile request */ |
211 | ||
212 | /* link to next struct putfile_request */ | |
213 | struct list_head next_putfile_request; | |
214 | ||
215 | /* most-recent sequence number supplied via a controlvm message */ | |
216 | u64 data_sequence_number; | |
217 | ||
218 | /* head of putfile_buffer_entry list, which describes the data to be | |
219 | * supplied as putfile data; | |
220 | * - this list is added to when controlvm messages come in that supply | |
221 | * file data | |
222 | * - this list is removed from via the hotplug program that is actually | |
223 | * consuming these buffers to write as file data */ | |
224 | struct list_head input_buffer_list; | |
225 | spinlock_t req_list_lock; /* lock for input_buffer_list */ | |
226 | ||
227 | /* waiters for input_buffer_list to go non-empty */ | |
228 | wait_queue_head_t input_buffer_wq; | |
229 | ||
230 | /* data not yet read within current putfile_buffer_entry */ | |
231 | struct putfile_active_buffer active_buf; | |
232 | ||
233 | /* <0 = failed, 0 = in-progress, >0 = successful; */ | |
234 | /* note that this must be set with req_list_lock, and if you set <0, */ | |
235 | /* it is your responsibility to also free up all of the other objects */ | |
236 | /* in this struct (like input_buffer_list, active_buf.parser_ctx) */ | |
237 | /* before releasing the lock */ | |
238 | int completion_status; | |
239 | }; | |
240 | ||
12e364b9 KC |
241 | struct parahotplug_request { |
242 | struct list_head list; | |
243 | int id; | |
244 | unsigned long expiration; | |
3ab47701 | 245 | struct controlvm_message msg; |
12e364b9 KC |
246 | }; |
247 | ||
ddf5de53 BR |
248 | static LIST_HEAD(parahotplug_request_list); |
249 | static DEFINE_SPINLOCK(parahotplug_request_list_lock); /* lock for above */ | |
12e364b9 KC |
250 | static void parahotplug_process_list(void); |
251 | ||
252 | /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE / | |
253 | * CONTROLVM_REPORTEVENT. | |
254 | */ | |
6fe345af BR |
255 | static struct visorchipset_busdev_notifiers busdev_server_notifiers; |
256 | static struct visorchipset_busdev_notifiers busdev_client_notifiers; | |
12e364b9 | 257 | |
52063eca JS |
258 | static void bus_create_response(u32 bus_no, int response); |
259 | static void bus_destroy_response(u32 bus_no, int response); | |
260 | static void device_create_response(u32 bus_no, u32 dev_no, int response); | |
261 | static void device_destroy_response(u32 bus_no, u32 dev_no, int response); | |
262 | static void device_resume_response(u32 bus_no, u32 dev_no, int response); | |
12e364b9 | 263 | |
8e3fedd6 | 264 | static struct visorchipset_busdev_responders busdev_responders = { |
12e364b9 KC |
265 | .bus_create = bus_create_response, |
266 | .bus_destroy = bus_destroy_response, | |
267 | .device_create = device_create_response, | |
268 | .device_destroy = device_destroy_response, | |
927c7927 | 269 | .device_pause = visorchipset_device_pause_response, |
12e364b9 KC |
270 | .device_resume = device_resume_response, |
271 | }; | |
272 | ||
273 | /* info for /dev/visorchipset */ | |
5aa8ae57 | 274 | static dev_t major_dev = -1; /**< indicates major num for device */ |
12e364b9 | 275 | |
19f6634f BR |
276 | /* prototypes for attributes */ |
277 | static ssize_t toolaction_show(struct device *dev, | |
8e76e695 | 278 | struct device_attribute *attr, char *buf); |
19f6634f | 279 | static ssize_t toolaction_store(struct device *dev, |
8e76e695 BR |
280 | struct device_attribute *attr, |
281 | const char *buf, size_t count); | |
19f6634f BR |
282 | static DEVICE_ATTR_RW(toolaction); |
283 | ||
54b31229 | 284 | static ssize_t boottotool_show(struct device *dev, |
8e76e695 | 285 | struct device_attribute *attr, char *buf); |
54b31229 | 286 | static ssize_t boottotool_store(struct device *dev, |
8e76e695 BR |
287 | struct device_attribute *attr, const char *buf, |
288 | size_t count); | |
54b31229 BR |
289 | static DEVICE_ATTR_RW(boottotool); |
290 | ||
422af17c | 291 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, |
8e76e695 | 292 | char *buf); |
422af17c | 293 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, |
8e76e695 | 294 | const char *buf, size_t count); |
422af17c BR |
295 | static DEVICE_ATTR_RW(error); |
296 | ||
297 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, | |
8e76e695 | 298 | char *buf); |
422af17c | 299 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, |
8e76e695 | 300 | const char *buf, size_t count); |
422af17c BR |
301 | static DEVICE_ATTR_RW(textid); |
302 | ||
303 | static ssize_t remaining_steps_show(struct device *dev, | |
8e76e695 | 304 | struct device_attribute *attr, char *buf); |
422af17c | 305 | static ssize_t remaining_steps_store(struct device *dev, |
8e76e695 BR |
306 | struct device_attribute *attr, |
307 | const char *buf, size_t count); | |
422af17c BR |
308 | static DEVICE_ATTR_RW(remaining_steps); |
309 | ||
18b87ed1 | 310 | static ssize_t chipsetready_store(struct device *dev, |
8e76e695 BR |
311 | struct device_attribute *attr, |
312 | const char *buf, size_t count); | |
18b87ed1 BR |
313 | static DEVICE_ATTR_WO(chipsetready); |
314 | ||
e56fa7cd | 315 | static ssize_t devicedisabled_store(struct device *dev, |
8e76e695 BR |
316 | struct device_attribute *attr, |
317 | const char *buf, size_t count); | |
e56fa7cd BR |
318 | static DEVICE_ATTR_WO(devicedisabled); |
319 | ||
320 | static ssize_t deviceenabled_store(struct device *dev, | |
8e76e695 BR |
321 | struct device_attribute *attr, |
322 | const char *buf, size_t count); | |
e56fa7cd BR |
323 | static DEVICE_ATTR_WO(deviceenabled); |
324 | ||
19f6634f BR |
325 | static struct attribute *visorchipset_install_attrs[] = { |
326 | &dev_attr_toolaction.attr, | |
54b31229 | 327 | &dev_attr_boottotool.attr, |
422af17c BR |
328 | &dev_attr_error.attr, |
329 | &dev_attr_textid.attr, | |
330 | &dev_attr_remaining_steps.attr, | |
19f6634f BR |
331 | NULL |
332 | }; | |
333 | ||
334 | static struct attribute_group visorchipset_install_group = { | |
335 | .name = "install", | |
336 | .attrs = visorchipset_install_attrs | |
337 | }; | |
338 | ||
18b87ed1 BR |
339 | static struct attribute *visorchipset_guest_attrs[] = { |
340 | &dev_attr_chipsetready.attr, | |
341 | NULL | |
342 | }; | |
343 | ||
344 | static struct attribute_group visorchipset_guest_group = { | |
345 | .name = "guest", | |
346 | .attrs = visorchipset_guest_attrs | |
347 | }; | |
348 | ||
e56fa7cd BR |
349 | static struct attribute *visorchipset_parahotplug_attrs[] = { |
350 | &dev_attr_devicedisabled.attr, | |
351 | &dev_attr_deviceenabled.attr, | |
352 | NULL | |
353 | }; | |
354 | ||
355 | static struct attribute_group visorchipset_parahotplug_group = { | |
356 | .name = "parahotplug", | |
357 | .attrs = visorchipset_parahotplug_attrs | |
358 | }; | |
359 | ||
19f6634f BR |
360 | static const struct attribute_group *visorchipset_dev_groups[] = { |
361 | &visorchipset_install_group, | |
18b87ed1 | 362 | &visorchipset_guest_group, |
e56fa7cd | 363 | &visorchipset_parahotplug_group, |
19f6634f BR |
364 | NULL |
365 | }; | |
366 | ||
12e364b9 | 367 | /* /sys/devices/platform/visorchipset */ |
eb34e877 | 368 | static struct platform_device visorchipset_platform_device = { |
12e364b9 KC |
369 | .name = "visorchipset", |
370 | .id = -1, | |
19f6634f | 371 | .dev.groups = visorchipset_dev_groups, |
12e364b9 KC |
372 | }; |
373 | ||
374 | /* Function prototypes */ | |
b3168c70 | 375 | static void controlvm_respond(struct controlvm_message_header *msg_hdr, |
98d7b594 BR |
376 | int response); |
377 | static void controlvm_respond_chipset_init( | |
b3168c70 | 378 | struct controlvm_message_header *msg_hdr, int response, |
98d7b594 BR |
379 | enum ultra_chipset_feature features); |
380 | static void controlvm_respond_physdev_changestate( | |
b3168c70 | 381 | struct controlvm_message_header *msg_hdr, int response, |
98d7b594 | 382 | struct spar_segment_state state); |
12e364b9 | 383 | |
46168810 EA |
384 | |
385 | static struct parser_context * | |
386 | parser_init_guts(u64 addr, u32 bytes, bool local, | |
387 | bool standard_payload_header, bool *retry) | |
388 | { | |
389 | int allocbytes = sizeof(struct parser_context) + bytes; | |
390 | struct parser_context *rc = NULL; | |
391 | struct parser_context *ctx = NULL; | |
392 | struct memregion *rgn = NULL; | |
393 | struct spar_controlvm_parameters_header *phdr = NULL; | |
394 | ||
395 | if (retry) | |
396 | *retry = false; | |
397 | if (!standard_payload_header) | |
398 | /* alloc and 0 extra byte to ensure payload is | |
399 | * '\0'-terminated | |
400 | */ | |
401 | allocbytes++; | |
402 | if ((controlvm_payload_bytes_buffered + bytes) | |
403 | > MAX_CONTROLVM_PAYLOAD_BYTES) { | |
404 | if (retry) | |
405 | *retry = true; | |
406 | rc = NULL; | |
407 | goto cleanup; | |
408 | } | |
409 | ctx = kzalloc(allocbytes, GFP_KERNEL|__GFP_NORETRY); | |
410 | if (!ctx) { | |
411 | if (retry) | |
412 | *retry = true; | |
413 | rc = NULL; | |
414 | goto cleanup; | |
415 | } | |
416 | ||
417 | ctx->allocbytes = allocbytes; | |
418 | ctx->param_bytes = bytes; | |
419 | ctx->curr = NULL; | |
420 | ctx->bytes_remaining = 0; | |
421 | ctx->byte_stream = false; | |
422 | if (local) { | |
423 | void *p; | |
424 | ||
425 | if (addr > virt_to_phys(high_memory - 1)) { | |
426 | rc = NULL; | |
427 | goto cleanup; | |
428 | } | |
429 | p = __va((unsigned long) (addr)); | |
430 | memcpy(ctx->data, p, bytes); | |
431 | } else { | |
432 | rgn = visor_memregion_create(addr, bytes); | |
433 | if (!rgn) { | |
434 | rc = NULL; | |
435 | goto cleanup; | |
436 | } | |
437 | if (visor_memregion_read(rgn, 0, ctx->data, bytes) < 0) { | |
438 | rc = NULL; | |
439 | goto cleanup; | |
440 | } | |
441 | } | |
442 | if (!standard_payload_header) { | |
443 | ctx->byte_stream = true; | |
444 | rc = ctx; | |
445 | goto cleanup; | |
446 | } | |
447 | phdr = (struct spar_controlvm_parameters_header *)(ctx->data); | |
448 | if (phdr->total_length != bytes) { | |
449 | rc = NULL; | |
450 | goto cleanup; | |
451 | } | |
452 | if (phdr->total_length < phdr->header_length) { | |
453 | rc = NULL; | |
454 | goto cleanup; | |
455 | } | |
456 | if (phdr->header_length < | |
457 | sizeof(struct spar_controlvm_parameters_header)) { | |
458 | rc = NULL; | |
459 | goto cleanup; | |
460 | } | |
461 | ||
462 | rc = ctx; | |
463 | cleanup: | |
464 | if (rgn) { | |
465 | visor_memregion_destroy(rgn); | |
466 | rgn = NULL; | |
467 | } | |
468 | if (rc) { | |
469 | controlvm_payload_bytes_buffered += ctx->param_bytes; | |
470 | } else { | |
471 | if (ctx) { | |
472 | parser_done(ctx); | |
473 | ctx = NULL; | |
474 | } | |
475 | } | |
476 | return rc; | |
477 | } | |
478 | ||
479 | struct parser_context * | |
480 | parser_init(u64 addr, u32 bytes, bool local, bool *retry) | |
481 | { | |
482 | return parser_init_guts(addr, bytes, local, true, retry); | |
483 | } | |
484 | ||
485 | /* Call this instead of parser_init() if the payload area consists of just | |
486 | * a sequence of bytes, rather than a struct spar_controlvm_parameters_header | |
487 | * structures. Afterwards, you can call parser_simpleString_get() or | |
488 | * parser_byteStream_get() to obtain the data. | |
489 | */ | |
490 | struct parser_context * | |
491 | parser_init_byte_stream(u64 addr, u32 bytes, bool local, bool *retry) | |
492 | { | |
493 | return parser_init_guts(addr, bytes, local, false, retry); | |
494 | } | |
495 | ||
496 | /* Obtain '\0'-terminated copy of string in payload area. | |
497 | */ | |
498 | char * | |
499 | parser_simpleString_get(struct parser_context *ctx) | |
500 | { | |
501 | if (!ctx->byte_stream) | |
502 | return NULL; | |
503 | return ctx->data; /* note this IS '\0'-terminated, because of | |
504 | * the num of bytes we alloc+clear in | |
505 | * parser_init_byteStream() */ | |
506 | } | |
507 | ||
508 | /* Obtain a copy of the buffer in the payload area. | |
509 | */ | |
510 | void *parser_byte_stream_get(struct parser_context *ctx, unsigned long *nbytes) | |
511 | { | |
512 | if (!ctx->byte_stream) | |
513 | return NULL; | |
514 | if (nbytes) | |
515 | *nbytes = ctx->param_bytes; | |
516 | return (void *)ctx->data; | |
517 | } | |
518 | ||
519 | uuid_le | |
520 | parser_id_get(struct parser_context *ctx) | |
521 | { | |
522 | struct spar_controlvm_parameters_header *phdr = NULL; | |
523 | ||
524 | if (ctx == NULL) | |
525 | return NULL_UUID_LE; | |
526 | phdr = (struct spar_controlvm_parameters_header *)(ctx->data); | |
527 | return phdr->id; | |
528 | } | |
529 | ||
530 | void | |
531 | parser_param_start(struct parser_context *ctx, PARSER_WHICH_STRING which_string) | |
532 | { | |
533 | struct spar_controlvm_parameters_header *phdr = NULL; | |
534 | ||
535 | if (ctx == NULL) | |
536 | goto Away; | |
537 | phdr = (struct spar_controlvm_parameters_header *)(ctx->data); | |
538 | switch (which_string) { | |
539 | case PARSERSTRING_INITIATOR: | |
540 | ctx->curr = ctx->data + phdr->initiator_offset; | |
541 | ctx->bytes_remaining = phdr->initiator_length; | |
542 | break; | |
543 | case PARSERSTRING_TARGET: | |
544 | ctx->curr = ctx->data + phdr->target_offset; | |
545 | ctx->bytes_remaining = phdr->target_length; | |
546 | break; | |
547 | case PARSERSTRING_CONNECTION: | |
548 | ctx->curr = ctx->data + phdr->connection_offset; | |
549 | ctx->bytes_remaining = phdr->connection_length; | |
550 | break; | |
551 | case PARSERSTRING_NAME: | |
552 | ctx->curr = ctx->data + phdr->name_offset; | |
553 | ctx->bytes_remaining = phdr->name_length; | |
554 | break; | |
555 | default: | |
556 | break; | |
557 | } | |
558 | ||
559 | Away: | |
560 | return; | |
561 | } | |
562 | ||
563 | void | |
564 | parser_done(struct parser_context *ctx) | |
565 | { | |
566 | if (!ctx) | |
567 | return; | |
568 | controlvm_payload_bytes_buffered -= ctx->param_bytes; | |
569 | kfree(ctx); | |
570 | } | |
571 | ||
572 | /** Return length of string not counting trailing spaces. */ | |
573 | static int | |
574 | string_length_no_trail(char *s, int len) | |
575 | { | |
576 | int i = len - 1; | |
577 | ||
578 | while (i >= 0) { | |
579 | if (!isspace(s[i])) | |
580 | return i + 1; | |
581 | i--; | |
582 | } | |
583 | return 0; | |
584 | } | |
585 | ||
586 | /** Grab the next name and value out of the parameter buffer. | |
587 | * The entire parameter buffer looks like this: | |
588 | * <name>=<value>\0 | |
589 | * <name>=<value>\0 | |
590 | * ... | |
591 | * \0 | |
592 | * If successful, the next <name> value is returned within the supplied | |
593 | * <nam> buffer (the value is always upper-cased), and the corresponding | |
594 | * <value> is returned within a kmalloc()ed buffer, whose pointer is | |
595 | * provided as the return value of this function. | |
596 | * (The total number of bytes allocated is strlen(<value>)+1.) | |
597 | * | |
598 | * NULL is returned to indicate failure, which can occur for several reasons: | |
599 | * - all <name>=<value> pairs have already been processed | |
600 | * - bad parameter | |
601 | * - parameter buffer ends prematurely (couldn't find an '=' or '\0' within | |
602 | * the confines of the parameter buffer) | |
603 | * - the <nam> buffer is not large enough to hold the <name> of the next | |
604 | * parameter | |
605 | */ | |
606 | void * | |
607 | parser_param_get(struct parser_context *ctx, char *nam, int namesize) | |
608 | { | |
609 | u8 *pscan, *pnam = nam; | |
610 | unsigned long nscan; | |
611 | int value_length = -1, orig_value_length = -1; | |
612 | void *value = NULL; | |
613 | int i; | |
614 | int closing_quote = 0; | |
615 | ||
616 | if (!ctx) | |
617 | return NULL; | |
618 | pscan = ctx->curr; | |
619 | nscan = ctx->bytes_remaining; | |
620 | if (nscan == 0) | |
621 | return NULL; | |
622 | if (*pscan == '\0') | |
623 | /* This is the normal return point after you have processed | |
624 | * all of the <name>=<value> pairs in a syntactically-valid | |
625 | * parameter buffer. | |
626 | */ | |
627 | return NULL; | |
628 | ||
629 | /* skip whitespace */ | |
630 | while (isspace(*pscan)) { | |
631 | pscan++; | |
632 | nscan--; | |
633 | if (nscan == 0) | |
634 | return NULL; | |
635 | } | |
636 | ||
637 | while (*pscan != ':') { | |
638 | if (namesize <= 0) | |
639 | return NULL; | |
640 | *pnam = toupper(*pscan); | |
641 | pnam++; | |
642 | namesize--; | |
643 | pscan++; | |
644 | nscan--; | |
645 | if (nscan == 0) | |
646 | return NULL; | |
647 | } | |
648 | if (namesize <= 0) | |
649 | return NULL; | |
650 | *pnam = '\0'; | |
651 | nam[string_length_no_trail(nam, strlen(nam))] = '\0'; | |
652 | ||
653 | /* point to char immediately after ":" in "<name>:<value>" */ | |
654 | pscan++; | |
655 | nscan--; | |
656 | /* skip whitespace */ | |
657 | while (isspace(*pscan)) { | |
658 | pscan++; | |
659 | nscan--; | |
660 | if (nscan == 0) | |
661 | return NULL; | |
662 | } | |
663 | if (nscan == 0) | |
664 | return NULL; | |
665 | if (*pscan == '\'' || *pscan == '"') { | |
666 | closing_quote = *pscan; | |
667 | pscan++; | |
668 | nscan--; | |
669 | if (nscan == 0) | |
670 | return NULL; | |
671 | } | |
672 | ||
673 | /* look for a separator character, terminator character, or | |
674 | * end of data | |
675 | */ | |
676 | for (i = 0, value_length = -1; i < nscan; i++) { | |
677 | if (closing_quote) { | |
678 | if (pscan[i] == '\0') | |
679 | return NULL; | |
680 | if (pscan[i] == closing_quote) { | |
681 | value_length = i; | |
682 | break; | |
683 | } | |
684 | } else | |
685 | if (pscan[i] == ',' || pscan[i] == ';' | |
686 | || pscan[i] == '\0') { | |
687 | value_length = i; | |
688 | break; | |
689 | } | |
690 | } | |
691 | if (value_length < 0) { | |
692 | if (closing_quote) | |
693 | return NULL; | |
694 | value_length = nscan; | |
695 | } | |
696 | orig_value_length = value_length; | |
697 | if (closing_quote == 0) | |
698 | value_length = string_length_no_trail(pscan, orig_value_length); | |
699 | value = kmalloc(value_length + 1, GFP_KERNEL|__GFP_NORETRY); | |
700 | if (value == NULL) | |
701 | return NULL; | |
702 | memcpy(value, pscan, value_length); | |
703 | ((u8 *) (value))[value_length] = '\0'; | |
704 | ||
705 | pscan += orig_value_length; | |
706 | nscan -= orig_value_length; | |
707 | ||
708 | /* skip past separator or closing quote */ | |
709 | if (nscan > 0) { | |
710 | if (*pscan != '\0') { | |
711 | pscan++; | |
712 | nscan--; | |
713 | } | |
714 | } | |
715 | ||
716 | if (closing_quote && (nscan > 0)) { | |
717 | /* we still need to skip around the real separator if present */ | |
718 | /* first, skip whitespace */ | |
719 | while (isspace(*pscan)) { | |
720 | pscan++; | |
721 | nscan--; | |
722 | if (nscan == 0) | |
723 | break; | |
724 | } | |
725 | if (nscan > 0) { | |
726 | if (*pscan == ',' || *pscan == ';') { | |
727 | pscan++; | |
728 | nscan--; | |
729 | } else if (*pscan != '\0') { | |
730 | kfree(value); | |
731 | value = NULL; | |
732 | return NULL; | |
733 | } | |
734 | } | |
735 | } | |
736 | ctx->curr = pscan; | |
737 | ctx->bytes_remaining = nscan; | |
738 | return value; | |
739 | } | |
740 | ||
741 | void * | |
742 | parser_string_get(struct parser_context *ctx) | |
743 | { | |
744 | u8 *pscan; | |
745 | unsigned long nscan; | |
746 | int value_length = -1; | |
747 | void *value = NULL; | |
748 | int i; | |
749 | ||
750 | if (!ctx) | |
751 | return NULL; | |
752 | pscan = ctx->curr; | |
753 | nscan = ctx->bytes_remaining; | |
754 | if (nscan == 0) | |
755 | return NULL; | |
756 | if (!pscan) | |
757 | return NULL; | |
758 | for (i = 0, value_length = -1; i < nscan; i++) | |
759 | if (pscan[i] == '\0') { | |
760 | value_length = i; | |
761 | break; | |
762 | } | |
763 | if (value_length < 0) /* '\0' was not included in the length */ | |
764 | value_length = nscan; | |
765 | value = kmalloc(value_length + 1, GFP_KERNEL|__GFP_NORETRY); | |
766 | if (value == NULL) | |
767 | return NULL; | |
768 | if (value_length > 0) | |
769 | memcpy(value, pscan, value_length); | |
770 | ((u8 *) (value))[value_length] = '\0'; | |
771 | return value; | |
772 | } | |
773 | ||
774 | ||
d746cb55 VB |
775 | static ssize_t toolaction_show(struct device *dev, |
776 | struct device_attribute *attr, | |
777 | char *buf) | |
19f6634f | 778 | { |
01f4d85a | 779 | u8 tool_action; |
19f6634f | 780 | |
c3d9a224 | 781 | visorchannel_read(controlvm_channel, |
d19642f6 | 782 | offsetof(struct spar_controlvm_channel_protocol, |
8e76e695 | 783 | tool_action), &tool_action, sizeof(u8)); |
01f4d85a | 784 | return scnprintf(buf, PAGE_SIZE, "%u\n", tool_action); |
19f6634f BR |
785 | } |
786 | ||
d746cb55 VB |
787 | static ssize_t toolaction_store(struct device *dev, |
788 | struct device_attribute *attr, | |
789 | const char *buf, size_t count) | |
19f6634f | 790 | { |
01f4d85a | 791 | u8 tool_action; |
66e24b76 | 792 | int ret; |
19f6634f | 793 | |
ebec8967 | 794 | if (kstrtou8(buf, 10, &tool_action)) |
66e24b76 BR |
795 | return -EINVAL; |
796 | ||
c3d9a224 | 797 | ret = visorchannel_write(controlvm_channel, |
8e76e695 BR |
798 | offsetof(struct spar_controlvm_channel_protocol, |
799 | tool_action), | |
01f4d85a | 800 | &tool_action, sizeof(u8)); |
66e24b76 BR |
801 | |
802 | if (ret) | |
803 | return ret; | |
e22a4a0f | 804 | return count; |
19f6634f BR |
805 | } |
806 | ||
d746cb55 VB |
807 | static ssize_t boottotool_show(struct device *dev, |
808 | struct device_attribute *attr, | |
809 | char *buf) | |
54b31229 | 810 | { |
365522d9 | 811 | struct efi_spar_indication efi_spar_indication; |
54b31229 | 812 | |
c3d9a224 | 813 | visorchannel_read(controlvm_channel, |
8e76e695 BR |
814 | offsetof(struct spar_controlvm_channel_protocol, |
815 | efi_spar_ind), &efi_spar_indication, | |
816 | sizeof(struct efi_spar_indication)); | |
54b31229 | 817 | return scnprintf(buf, PAGE_SIZE, "%u\n", |
8e76e695 | 818 | efi_spar_indication.boot_to_tool); |
54b31229 BR |
819 | } |
820 | ||
d746cb55 VB |
821 | static ssize_t boottotool_store(struct device *dev, |
822 | struct device_attribute *attr, | |
823 | const char *buf, size_t count) | |
54b31229 | 824 | { |
66e24b76 | 825 | int val, ret; |
365522d9 | 826 | struct efi_spar_indication efi_spar_indication; |
54b31229 | 827 | |
ebec8967 | 828 | if (kstrtoint(buf, 10, &val)) |
66e24b76 BR |
829 | return -EINVAL; |
830 | ||
365522d9 | 831 | efi_spar_indication.boot_to_tool = val; |
c3d9a224 | 832 | ret = visorchannel_write(controlvm_channel, |
d19642f6 | 833 | offsetof(struct spar_controlvm_channel_protocol, |
8e76e695 BR |
834 | efi_spar_ind), &(efi_spar_indication), |
835 | sizeof(struct efi_spar_indication)); | |
66e24b76 BR |
836 | |
837 | if (ret) | |
838 | return ret; | |
e22a4a0f | 839 | return count; |
54b31229 | 840 | } |
422af17c BR |
841 | |
842 | static ssize_t error_show(struct device *dev, struct device_attribute *attr, | |
8e76e695 | 843 | char *buf) |
422af17c BR |
844 | { |
845 | u32 error; | |
846 | ||
8e76e695 BR |
847 | visorchannel_read(controlvm_channel, |
848 | offsetof(struct spar_controlvm_channel_protocol, | |
849 | installation_error), | |
850 | &error, sizeof(u32)); | |
422af17c BR |
851 | return scnprintf(buf, PAGE_SIZE, "%i\n", error); |
852 | } | |
853 | ||
854 | static ssize_t error_store(struct device *dev, struct device_attribute *attr, | |
8e76e695 | 855 | const char *buf, size_t count) |
422af17c BR |
856 | { |
857 | u32 error; | |
66e24b76 | 858 | int ret; |
422af17c | 859 | |
ebec8967 | 860 | if (kstrtou32(buf, 10, &error)) |
66e24b76 BR |
861 | return -EINVAL; |
862 | ||
c3d9a224 | 863 | ret = visorchannel_write(controlvm_channel, |
8e76e695 BR |
864 | offsetof(struct spar_controlvm_channel_protocol, |
865 | installation_error), | |
866 | &error, sizeof(u32)); | |
66e24b76 BR |
867 | if (ret) |
868 | return ret; | |
e22a4a0f | 869 | return count; |
422af17c BR |
870 | } |
871 | ||
872 | static ssize_t textid_show(struct device *dev, struct device_attribute *attr, | |
8e76e695 | 873 | char *buf) |
422af17c | 874 | { |
10dbf0e3 | 875 | u32 text_id; |
422af17c | 876 | |
8e76e695 BR |
877 | visorchannel_read(controlvm_channel, |
878 | offsetof(struct spar_controlvm_channel_protocol, | |
879 | installation_text_id), | |
880 | &text_id, sizeof(u32)); | |
10dbf0e3 | 881 | return scnprintf(buf, PAGE_SIZE, "%i\n", text_id); |
422af17c BR |
882 | } |
883 | ||
884 | static ssize_t textid_store(struct device *dev, struct device_attribute *attr, | |
8e76e695 | 885 | const char *buf, size_t count) |
422af17c | 886 | { |
10dbf0e3 | 887 | u32 text_id; |
66e24b76 | 888 | int ret; |
422af17c | 889 | |
ebec8967 | 890 | if (kstrtou32(buf, 10, &text_id)) |
66e24b76 BR |
891 | return -EINVAL; |
892 | ||
c3d9a224 | 893 | ret = visorchannel_write(controlvm_channel, |
8e76e695 BR |
894 | offsetof(struct spar_controlvm_channel_protocol, |
895 | installation_text_id), | |
896 | &text_id, sizeof(u32)); | |
66e24b76 BR |
897 | if (ret) |
898 | return ret; | |
e22a4a0f | 899 | return count; |
422af17c BR |
900 | } |
901 | ||
422af17c | 902 | static ssize_t remaining_steps_show(struct device *dev, |
8e76e695 | 903 | struct device_attribute *attr, char *buf) |
422af17c | 904 | { |
ee8da290 | 905 | u16 remaining_steps; |
422af17c | 906 | |
c3d9a224 | 907 | visorchannel_read(controlvm_channel, |
8e76e695 BR |
908 | offsetof(struct spar_controlvm_channel_protocol, |
909 | installation_remaining_steps), | |
910 | &remaining_steps, sizeof(u16)); | |
ee8da290 | 911 | return scnprintf(buf, PAGE_SIZE, "%hu\n", remaining_steps); |
422af17c BR |
912 | } |
913 | ||
914 | static ssize_t remaining_steps_store(struct device *dev, | |
8e76e695 BR |
915 | struct device_attribute *attr, |
916 | const char *buf, size_t count) | |
422af17c | 917 | { |
ee8da290 | 918 | u16 remaining_steps; |
66e24b76 | 919 | int ret; |
422af17c | 920 | |
ebec8967 | 921 | if (kstrtou16(buf, 10, &remaining_steps)) |
66e24b76 BR |
922 | return -EINVAL; |
923 | ||
c3d9a224 | 924 | ret = visorchannel_write(controlvm_channel, |
8e76e695 BR |
925 | offsetof(struct spar_controlvm_channel_protocol, |
926 | installation_remaining_steps), | |
927 | &remaining_steps, sizeof(u16)); | |
66e24b76 BR |
928 | if (ret) |
929 | return ret; | |
e22a4a0f | 930 | return count; |
422af17c BR |
931 | } |
932 | ||
12e364b9 | 933 | static void |
9b989a98 | 934 | bus_info_clear(void *v) |
12e364b9 | 935 | { |
bbd4be30 | 936 | struct visorchipset_bus_info *p = (struct visorchipset_bus_info *) v; |
12e364b9 | 937 | |
12e364b9 | 938 | kfree(p->name); |
12e364b9 | 939 | kfree(p->description); |
33192fa1 | 940 | memset(p, 0, sizeof(struct visorchipset_bus_info)); |
12e364b9 KC |
941 | } |
942 | ||
943 | static void | |
9b989a98 | 944 | dev_info_clear(void *v) |
12e364b9 | 945 | { |
246e0cd0 | 946 | struct visorchipset_device_info *p = |
bbd4be30 | 947 | (struct visorchipset_device_info *) v; |
26eb2c0c | 948 | |
246e0cd0 | 949 | memset(p, 0, sizeof(struct visorchipset_device_info)); |
12e364b9 KC |
950 | } |
951 | ||
4f66520b JS |
952 | static struct visorchipset_bus_info * |
953 | bus_find(struct list_head *list, u32 bus_no) | |
954 | { | |
955 | struct visorchipset_bus_info *p; | |
956 | ||
957 | list_for_each_entry(p, list, entry) { | |
958 | if (p->bus_no == bus_no) | |
959 | return p; | |
960 | } | |
961 | ||
962 | return NULL; | |
963 | } | |
964 | ||
d480f6a2 JS |
965 | static struct visorchipset_device_info * |
966 | device_find(struct list_head *list, u32 bus_no, u32 dev_no) | |
967 | { | |
968 | struct visorchipset_device_info *p; | |
969 | ||
970 | list_for_each_entry(p, list, entry) { | |
971 | if (p->bus_no == bus_no && p->dev_no == dev_no) | |
972 | return p; | |
973 | } | |
974 | ||
975 | return NULL; | |
976 | } | |
977 | ||
28723521 JS |
978 | static void busdevices_del(struct list_head *list, u32 bus_no) |
979 | { | |
980 | struct visorchipset_device_info *p, *tmp; | |
981 | ||
982 | list_for_each_entry_safe(p, tmp, list, entry) { | |
983 | if (p->bus_no == bus_no) { | |
984 | list_del(&p->entry); | |
985 | kfree(p); | |
986 | } | |
987 | } | |
988 | } | |
989 | ||
c242233e | 990 | static u8 |
12e364b9 KC |
991 | check_chipset_events(void) |
992 | { | |
993 | int i; | |
c242233e | 994 | u8 send_msg = 1; |
12e364b9 KC |
995 | /* Check events to determine if response should be sent */ |
996 | for (i = 0; i < MAX_CHIPSET_EVENTS; i++) | |
997 | send_msg &= chipset_events[i]; | |
998 | return send_msg; | |
999 | } | |
1000 | ||
1001 | static void | |
1002 | clear_chipset_events(void) | |
1003 | { | |
1004 | int i; | |
1005 | /* Clear chipset_events */ | |
1006 | for (i = 0; i < MAX_CHIPSET_EVENTS; i++) | |
1007 | chipset_events[i] = 0; | |
1008 | } | |
1009 | ||
1010 | void | |
fe90d892 BR |
1011 | visorchipset_register_busdev_server( |
1012 | struct visorchipset_busdev_notifiers *notifiers, | |
929aa8ae | 1013 | struct visorchipset_busdev_responders *responders, |
1e7a59c1 | 1014 | struct ultra_vbus_deviceinfo *driver_info) |
12e364b9 | 1015 | { |
8f1947ac | 1016 | down(¬ifier_lock); |
38f736e9 | 1017 | if (!notifiers) { |
6fe345af BR |
1018 | memset(&busdev_server_notifiers, 0, |
1019 | sizeof(busdev_server_notifiers)); | |
12e364b9 KC |
1020 | serverregistered = 0; /* clear flag */ |
1021 | } else { | |
6fe345af | 1022 | busdev_server_notifiers = *notifiers; |
12e364b9 KC |
1023 | serverregistered = 1; /* set flag */ |
1024 | } | |
1025 | if (responders) | |
8e3fedd6 | 1026 | *responders = busdev_responders; |
1e7a59c1 BR |
1027 | if (driver_info) |
1028 | bus_device_info_init(driver_info, "chipset", "visorchipset", | |
8e76e695 | 1029 | VERSION, NULL); |
12e364b9 | 1030 | |
8f1947ac | 1031 | up(¬ifier_lock); |
12e364b9 KC |
1032 | } |
1033 | EXPORT_SYMBOL_GPL(visorchipset_register_busdev_server); | |
1034 | ||
1035 | void | |
fe90d892 BR |
1036 | visorchipset_register_busdev_client( |
1037 | struct visorchipset_busdev_notifiers *notifiers, | |
929aa8ae | 1038 | struct visorchipset_busdev_responders *responders, |
43fce019 | 1039 | struct ultra_vbus_deviceinfo *driver_info) |
12e364b9 | 1040 | { |
8f1947ac | 1041 | down(¬ifier_lock); |
38f736e9 | 1042 | if (!notifiers) { |
6fe345af BR |
1043 | memset(&busdev_client_notifiers, 0, |
1044 | sizeof(busdev_client_notifiers)); | |
12e364b9 KC |
1045 | clientregistered = 0; /* clear flag */ |
1046 | } else { | |
6fe345af | 1047 | busdev_client_notifiers = *notifiers; |
12e364b9 KC |
1048 | clientregistered = 1; /* set flag */ |
1049 | } | |
1050 | if (responders) | |
8e3fedd6 | 1051 | *responders = busdev_responders; |
43fce019 BR |
1052 | if (driver_info) |
1053 | bus_device_info_init(driver_info, "chipset(bolts)", | |
1054 | "visorchipset", VERSION, NULL); | |
8f1947ac | 1055 | up(¬ifier_lock); |
12e364b9 KC |
1056 | } |
1057 | EXPORT_SYMBOL_GPL(visorchipset_register_busdev_client); | |
1058 | ||
1059 | static void | |
1060 | cleanup_controlvm_structures(void) | |
1061 | { | |
33192fa1 | 1062 | struct visorchipset_bus_info *bi, *tmp_bi; |
246e0cd0 | 1063 | struct visorchipset_device_info *di, *tmp_di; |
12e364b9 | 1064 | |
1390b88c | 1065 | list_for_each_entry_safe(bi, tmp_bi, &bus_info_list, entry) { |
9b989a98 | 1066 | bus_info_clear(bi); |
12e364b9 KC |
1067 | list_del(&bi->entry); |
1068 | kfree(bi); | |
1069 | } | |
1070 | ||
1390b88c | 1071 | list_for_each_entry_safe(di, tmp_di, &dev_info_list, entry) { |
9b989a98 | 1072 | dev_info_clear(di); |
12e364b9 KC |
1073 | list_del(&di->entry); |
1074 | kfree(di); | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | static void | |
3ab47701 | 1079 | chipset_init(struct controlvm_message *inmsg) |
12e364b9 KC |
1080 | { |
1081 | static int chipset_inited; | |
b9b141e8 | 1082 | enum ultra_chipset_feature features = 0; |
12e364b9 KC |
1083 | int rc = CONTROLVM_RESP_SUCCESS; |
1084 | ||
1085 | POSTCODE_LINUX_2(CHIPSET_INIT_ENTRY_PC, POSTCODE_SEVERITY_INFO); | |
1086 | if (chipset_inited) { | |
22ad57ba | 1087 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
e3199b2e | 1088 | goto cleanup; |
12e364b9 KC |
1089 | } |
1090 | chipset_inited = 1; | |
1091 | POSTCODE_LINUX_2(CHIPSET_INIT_EXIT_PC, POSTCODE_SEVERITY_INFO); | |
1092 | ||
1093 | /* Set features to indicate we support parahotplug (if Command | |
1094 | * also supports it). */ | |
1095 | features = | |
2ea5117b | 1096 | inmsg->cmd.init_chipset. |
12e364b9 KC |
1097 | features & ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG; |
1098 | ||
1099 | /* Set the "reply" bit so Command knows this is a | |
1100 | * features-aware driver. */ | |
1101 | features |= ULTRA_CHIPSET_FEATURE_REPLY; | |
1102 | ||
e3199b2e | 1103 | cleanup: |
12e364b9 KC |
1104 | if (rc < 0) |
1105 | cleanup_controlvm_structures(); | |
98d7b594 | 1106 | if (inmsg->hdr.flags.response_expected) |
12e364b9 KC |
1107 | controlvm_respond_chipset_init(&inmsg->hdr, rc, features); |
1108 | } | |
1109 | ||
1110 | static void | |
3ab47701 | 1111 | controlvm_init_response(struct controlvm_message *msg, |
b3168c70 | 1112 | struct controlvm_message_header *msg_hdr, int response) |
12e364b9 | 1113 | { |
3ab47701 | 1114 | memset(msg, 0, sizeof(struct controlvm_message)); |
b3168c70 | 1115 | memcpy(&msg->hdr, msg_hdr, sizeof(struct controlvm_message_header)); |
98d7b594 BR |
1116 | msg->hdr.payload_bytes = 0; |
1117 | msg->hdr.payload_vm_offset = 0; | |
1118 | msg->hdr.payload_max_bytes = 0; | |
12e364b9 | 1119 | if (response < 0) { |
98d7b594 BR |
1120 | msg->hdr.flags.failed = 1; |
1121 | msg->hdr.completion_status = (u32) (-response); | |
12e364b9 KC |
1122 | } |
1123 | } | |
1124 | ||
1125 | static void | |
b3168c70 | 1126 | controlvm_respond(struct controlvm_message_header *msg_hdr, int response) |
12e364b9 | 1127 | { |
3ab47701 | 1128 | struct controlvm_message outmsg; |
26eb2c0c | 1129 | |
b3168c70 | 1130 | controlvm_init_response(&outmsg, msg_hdr, response); |
12e364b9 KC |
1131 | /* For DiagPool channel DEVICE_CHANGESTATE, we need to send |
1132 | * back the deviceChangeState structure in the packet. */ | |
b3168c70 | 1133 | if (msg_hdr->id == CONTROLVM_DEVICE_CHANGESTATE && |
0639ba67 BR |
1134 | g_devicechangestate_packet.device_change_state.bus_no == |
1135 | g_diagpool_bus_no && | |
1136 | g_devicechangestate_packet.device_change_state.dev_no == | |
83d48905 | 1137 | g_diagpool_dev_no) |
4f44b72d | 1138 | outmsg.cmd = g_devicechangestate_packet; |
2098dbd1 | 1139 | if (outmsg.hdr.flags.test_message == 1) |
12e364b9 | 1140 | return; |
2098dbd1 | 1141 | |
c3d9a224 | 1142 | if (!visorchannel_signalinsert(controlvm_channel, |
12e364b9 | 1143 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { |
12e364b9 KC |
1144 | return; |
1145 | } | |
1146 | } | |
1147 | ||
1148 | static void | |
b3168c70 | 1149 | controlvm_respond_chipset_init(struct controlvm_message_header *msg_hdr, |
98d7b594 | 1150 | int response, |
b9b141e8 | 1151 | enum ultra_chipset_feature features) |
12e364b9 | 1152 | { |
3ab47701 | 1153 | struct controlvm_message outmsg; |
26eb2c0c | 1154 | |
b3168c70 | 1155 | controlvm_init_response(&outmsg, msg_hdr, response); |
2ea5117b | 1156 | outmsg.cmd.init_chipset.features = features; |
c3d9a224 | 1157 | if (!visorchannel_signalinsert(controlvm_channel, |
12e364b9 | 1158 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { |
12e364b9 KC |
1159 | return; |
1160 | } | |
1161 | } | |
1162 | ||
98d7b594 | 1163 | static void controlvm_respond_physdev_changestate( |
b3168c70 | 1164 | struct controlvm_message_header *msg_hdr, int response, |
98d7b594 | 1165 | struct spar_segment_state state) |
12e364b9 | 1166 | { |
3ab47701 | 1167 | struct controlvm_message outmsg; |
26eb2c0c | 1168 | |
b3168c70 | 1169 | controlvm_init_response(&outmsg, msg_hdr, response); |
2ea5117b BR |
1170 | outmsg.cmd.device_change_state.state = state; |
1171 | outmsg.cmd.device_change_state.flags.phys_device = 1; | |
c3d9a224 | 1172 | if (!visorchannel_signalinsert(controlvm_channel, |
12e364b9 | 1173 | CONTROLVM_QUEUE_REQUEST, &outmsg)) { |
12e364b9 KC |
1174 | return; |
1175 | } | |
1176 | } | |
1177 | ||
1178 | void | |
2c683cde BR |
1179 | visorchipset_save_message(struct controlvm_message *msg, |
1180 | enum crash_obj_type type) | |
12e364b9 | 1181 | { |
4577225d BR |
1182 | u32 crash_msg_offset; |
1183 | u16 crash_msg_count; | |
12e364b9 KC |
1184 | |
1185 | /* get saved message count */ | |
c3d9a224 | 1186 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
1187 | offsetof(struct spar_controlvm_channel_protocol, |
1188 | saved_crash_message_count), | |
4577225d | 1189 | &crash_msg_count, sizeof(u16)) < 0) { |
12e364b9 KC |
1190 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
1191 | POSTCODE_SEVERITY_ERR); | |
1192 | return; | |
1193 | } | |
1194 | ||
4577225d | 1195 | if (crash_msg_count != CONTROLVM_CRASHMSG_MAX) { |
12e364b9 | 1196 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, |
4577225d | 1197 | crash_msg_count, |
12e364b9 KC |
1198 | POSTCODE_SEVERITY_ERR); |
1199 | return; | |
1200 | } | |
1201 | ||
1202 | /* get saved crash message offset */ | |
c3d9a224 | 1203 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
1204 | offsetof(struct spar_controlvm_channel_protocol, |
1205 | saved_crash_message_offset), | |
4577225d | 1206 | &crash_msg_offset, sizeof(u32)) < 0) { |
12e364b9 KC |
1207 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
1208 | POSTCODE_SEVERITY_ERR); | |
1209 | return; | |
1210 | } | |
1211 | ||
2c683cde | 1212 | if (type == CRASH_BUS) { |
c3d9a224 | 1213 | if (visorchannel_write(controlvm_channel, |
4577225d | 1214 | crash_msg_offset, |
3ab47701 BR |
1215 | msg, |
1216 | sizeof(struct controlvm_message)) < 0) { | |
12e364b9 KC |
1217 | POSTCODE_LINUX_2(SAVE_MSG_BUS_FAILURE_PC, |
1218 | POSTCODE_SEVERITY_ERR); | |
1219 | return; | |
1220 | } | |
1221 | } else { | |
c3d9a224 | 1222 | if (visorchannel_write(controlvm_channel, |
4577225d | 1223 | crash_msg_offset + |
3ab47701 BR |
1224 | sizeof(struct controlvm_message), msg, |
1225 | sizeof(struct controlvm_message)) < 0) { | |
12e364b9 KC |
1226 | POSTCODE_LINUX_2(SAVE_MSG_DEV_FAILURE_PC, |
1227 | POSTCODE_SEVERITY_ERR); | |
1228 | return; | |
1229 | } | |
1230 | } | |
1231 | } | |
1232 | EXPORT_SYMBOL_GPL(visorchipset_save_message); | |
1233 | ||
1234 | static void | |
52063eca | 1235 | bus_responder(enum controlvm_id cmd_id, u32 bus_no, int response) |
12e364b9 | 1236 | { |
e82ba62e | 1237 | struct visorchipset_bus_info *p; |
f4c11551 | 1238 | bool need_clear = false; |
12e364b9 | 1239 | |
4f66520b | 1240 | p = bus_find(&bus_info_list, bus_no); |
0aca7844 | 1241 | if (!p) |
12e364b9 | 1242 | return; |
0aca7844 | 1243 | |
12e364b9 | 1244 | if (response < 0) { |
fbb31f48 | 1245 | if ((cmd_id == CONTROLVM_BUS_CREATE) && |
12e364b9 KC |
1246 | (response != (-CONTROLVM_RESP_ERROR_ALREADY_DONE))) |
1247 | /* undo the row we just created... */ | |
28723521 | 1248 | busdevices_del(&dev_info_list, bus_no); |
12e364b9 | 1249 | } else { |
fbb31f48 | 1250 | if (cmd_id == CONTROLVM_BUS_CREATE) |
12e364b9 | 1251 | p->state.created = 1; |
fbb31f48 | 1252 | if (cmd_id == CONTROLVM_BUS_DESTROY) |
f4c11551 | 1253 | need_clear = true; |
12e364b9 KC |
1254 | } |
1255 | ||
0aca7844 | 1256 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) |
12e364b9 | 1257 | return; /* no controlvm response needed */ |
6b59b31d | 1258 | if (p->pending_msg_hdr.id != (u32)cmd_id) |
12e364b9 | 1259 | return; |
33192fa1 BR |
1260 | controlvm_respond(&p->pending_msg_hdr, response); |
1261 | p->pending_msg_hdr.id = CONTROLVM_INVALID; | |
12e364b9 | 1262 | if (need_clear) { |
9b989a98 | 1263 | bus_info_clear(p); |
28723521 | 1264 | busdevices_del(&dev_info_list, bus_no); |
12e364b9 KC |
1265 | } |
1266 | } | |
1267 | ||
1268 | static void | |
fbb31f48 | 1269 | device_changestate_responder(enum controlvm_id cmd_id, |
52063eca | 1270 | u32 bus_no, u32 dev_no, int response, |
fbb31f48 | 1271 | struct spar_segment_state response_state) |
12e364b9 | 1272 | { |
e82ba62e | 1273 | struct visorchipset_device_info *p; |
3ab47701 | 1274 | struct controlvm_message outmsg; |
12e364b9 | 1275 | |
d480f6a2 | 1276 | p = device_find(&dev_info_list, bus_no, dev_no); |
0aca7844 | 1277 | if (!p) |
12e364b9 | 1278 | return; |
0aca7844 | 1279 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) |
12e364b9 | 1280 | return; /* no controlvm response needed */ |
fbb31f48 | 1281 | if (p->pending_msg_hdr.id != cmd_id) |
12e364b9 | 1282 | return; |
12e364b9 | 1283 | |
246e0cd0 | 1284 | controlvm_init_response(&outmsg, &p->pending_msg_hdr, response); |
12e364b9 | 1285 | |
fbb31f48 BR |
1286 | outmsg.cmd.device_change_state.bus_no = bus_no; |
1287 | outmsg.cmd.device_change_state.dev_no = dev_no; | |
1288 | outmsg.cmd.device_change_state.state = response_state; | |
12e364b9 | 1289 | |
c3d9a224 | 1290 | if (!visorchannel_signalinsert(controlvm_channel, |
0aca7844 | 1291 | CONTROLVM_QUEUE_REQUEST, &outmsg)) |
12e364b9 | 1292 | return; |
12e364b9 | 1293 | |
246e0cd0 | 1294 | p->pending_msg_hdr.id = CONTROLVM_INVALID; |
12e364b9 KC |
1295 | } |
1296 | ||
1297 | static void | |
52063eca | 1298 | device_responder(enum controlvm_id cmd_id, u32 bus_no, u32 dev_no, int response) |
12e364b9 | 1299 | { |
e82ba62e | 1300 | struct visorchipset_device_info *p; |
f4c11551 | 1301 | bool need_clear = false; |
12e364b9 | 1302 | |
d480f6a2 | 1303 | p = device_find(&dev_info_list, bus_no, dev_no); |
0aca7844 | 1304 | if (!p) |
12e364b9 | 1305 | return; |
12e364b9 | 1306 | if (response >= 0) { |
fbb31f48 | 1307 | if (cmd_id == CONTROLVM_DEVICE_CREATE) |
12e364b9 | 1308 | p->state.created = 1; |
fbb31f48 | 1309 | if (cmd_id == CONTROLVM_DEVICE_DESTROY) |
f4c11551 | 1310 | need_clear = true; |
12e364b9 KC |
1311 | } |
1312 | ||
0aca7844 | 1313 | if (p->pending_msg_hdr.id == CONTROLVM_INVALID) |
12e364b9 | 1314 | return; /* no controlvm response needed */ |
0aca7844 | 1315 | |
6b59b31d | 1316 | if (p->pending_msg_hdr.id != (u32)cmd_id) |
12e364b9 | 1317 | return; |
0aca7844 | 1318 | |
246e0cd0 BR |
1319 | controlvm_respond(&p->pending_msg_hdr, response); |
1320 | p->pending_msg_hdr.id = CONTROLVM_INVALID; | |
12e364b9 | 1321 | if (need_clear) |
9b989a98 | 1322 | dev_info_clear(p); |
12e364b9 KC |
1323 | } |
1324 | ||
1325 | static void | |
2836c6a8 BR |
1326 | bus_epilog(u32 bus_no, |
1327 | u32 cmd, struct controlvm_message_header *msg_hdr, | |
f4c11551 | 1328 | int response, bool need_response) |
12e364b9 | 1329 | { |
4f66520b | 1330 | struct visorchipset_bus_info *bus_info; |
f4c11551 | 1331 | bool notified = false; |
12e364b9 | 1332 | |
4f66520b | 1333 | bus_info = bus_find(&bus_info_list, bus_no); |
12e364b9 | 1334 | |
2836c6a8 | 1335 | if (!bus_info) |
12e364b9 | 1336 | return; |
0aca7844 | 1337 | |
2836c6a8 BR |
1338 | if (need_response) { |
1339 | memcpy(&bus_info->pending_msg_hdr, msg_hdr, | |
98d7b594 | 1340 | sizeof(struct controlvm_message_header)); |
75c1f8b7 | 1341 | } else { |
2836c6a8 | 1342 | bus_info->pending_msg_hdr.id = CONTROLVM_INVALID; |
75c1f8b7 | 1343 | } |
12e364b9 | 1344 | |
8f1947ac | 1345 | down(¬ifier_lock); |
12e364b9 KC |
1346 | if (response == CONTROLVM_RESP_SUCCESS) { |
1347 | switch (cmd) { | |
1348 | case CONTROLVM_BUS_CREATE: | |
1349 | /* We can't tell from the bus_create | |
1350 | * information which of our 2 bus flavors the | |
1351 | * devices on this bus will ultimately end up. | |
1352 | * FORTUNATELY, it turns out it is harmless to | |
1353 | * send the bus_create to both of them. We can | |
1354 | * narrow things down a little bit, though, | |
1355 | * because we know: - BusDev_Server can handle | |
1356 | * either server or client devices | |
1357 | * - BusDev_Client can handle ONLY client | |
1358 | * devices */ | |
6fe345af BR |
1359 | if (busdev_server_notifiers.bus_create) { |
1360 | (*busdev_server_notifiers.bus_create) (bus_no); | |
f4c11551 | 1361 | notified = true; |
12e364b9 | 1362 | } |
2836c6a8 | 1363 | if ((!bus_info->flags.server) /*client */ && |
6fe345af BR |
1364 | busdev_client_notifiers.bus_create) { |
1365 | (*busdev_client_notifiers.bus_create) (bus_no); | |
f4c11551 | 1366 | notified = true; |
12e364b9 KC |
1367 | } |
1368 | break; | |
1369 | case CONTROLVM_BUS_DESTROY: | |
6fe345af BR |
1370 | if (busdev_server_notifiers.bus_destroy) { |
1371 | (*busdev_server_notifiers.bus_destroy) (bus_no); | |
f4c11551 | 1372 | notified = true; |
12e364b9 | 1373 | } |
2836c6a8 | 1374 | if ((!bus_info->flags.server) /*client */ && |
6fe345af BR |
1375 | busdev_client_notifiers.bus_destroy) { |
1376 | (*busdev_client_notifiers.bus_destroy) (bus_no); | |
f4c11551 | 1377 | notified = true; |
12e364b9 KC |
1378 | } |
1379 | break; | |
1380 | } | |
1381 | } | |
1382 | if (notified) | |
1383 | /* The callback function just called above is responsible | |
929aa8ae | 1384 | * for calling the appropriate visorchipset_busdev_responders |
12e364b9 KC |
1385 | * function, which will call bus_responder() |
1386 | */ | |
1387 | ; | |
1388 | else | |
2836c6a8 | 1389 | bus_responder(cmd, bus_no, response); |
8f1947ac | 1390 | up(¬ifier_lock); |
12e364b9 KC |
1391 | } |
1392 | ||
1393 | static void | |
2836c6a8 BR |
1394 | device_epilog(u32 bus_no, u32 dev_no, struct spar_segment_state state, u32 cmd, |
1395 | struct controlvm_message_header *msg_hdr, int response, | |
f4c11551 | 1396 | bool need_response, bool for_visorbus) |
12e364b9 | 1397 | { |
e82ba62e | 1398 | struct visorchipset_busdev_notifiers *notifiers; |
f4c11551 | 1399 | bool notified = false; |
12e364b9 | 1400 | |
2836c6a8 | 1401 | struct visorchipset_device_info *dev_info = |
d480f6a2 | 1402 | device_find(&dev_info_list, bus_no, dev_no); |
12e364b9 KC |
1403 | char *envp[] = { |
1404 | "SPARSP_DIAGPOOL_PAUSED_STATE = 1", | |
1405 | NULL | |
1406 | }; | |
1407 | ||
2836c6a8 | 1408 | if (!dev_info) |
12e364b9 | 1409 | return; |
0aca7844 | 1410 | |
12e364b9 | 1411 | if (for_visorbus) |
6fe345af | 1412 | notifiers = &busdev_server_notifiers; |
12e364b9 | 1413 | else |
6fe345af | 1414 | notifiers = &busdev_client_notifiers; |
2836c6a8 BR |
1415 | if (need_response) { |
1416 | memcpy(&dev_info->pending_msg_hdr, msg_hdr, | |
98d7b594 | 1417 | sizeof(struct controlvm_message_header)); |
75c1f8b7 | 1418 | } else { |
2836c6a8 | 1419 | dev_info->pending_msg_hdr.id = CONTROLVM_INVALID; |
75c1f8b7 | 1420 | } |
12e364b9 | 1421 | |
8f1947ac | 1422 | down(¬ifier_lock); |
12e364b9 KC |
1423 | if (response >= 0) { |
1424 | switch (cmd) { | |
1425 | case CONTROLVM_DEVICE_CREATE: | |
1426 | if (notifiers->device_create) { | |
2836c6a8 | 1427 | (*notifiers->device_create) (bus_no, dev_no); |
f4c11551 | 1428 | notified = true; |
12e364b9 KC |
1429 | } |
1430 | break; | |
1431 | case CONTROLVM_DEVICE_CHANGESTATE: | |
1432 | /* ServerReady / ServerRunning / SegmentStateRunning */ | |
bd0d2dcc BR |
1433 | if (state.alive == segment_state_running.alive && |
1434 | state.operating == | |
1435 | segment_state_running.operating) { | |
12e364b9 | 1436 | if (notifiers->device_resume) { |
2836c6a8 BR |
1437 | (*notifiers->device_resume) (bus_no, |
1438 | dev_no); | |
f4c11551 | 1439 | notified = true; |
12e364b9 KC |
1440 | } |
1441 | } | |
1442 | /* ServerNotReady / ServerLost / SegmentStateStandby */ | |
bd0d2dcc | 1443 | else if (state.alive == segment_state_standby.alive && |
3f833b54 | 1444 | state.operating == |
bd0d2dcc | 1445 | segment_state_standby.operating) { |
12e364b9 KC |
1446 | /* technically this is standby case |
1447 | * where server is lost | |
1448 | */ | |
1449 | if (notifiers->device_pause) { | |
2836c6a8 BR |
1450 | (*notifiers->device_pause) (bus_no, |
1451 | dev_no); | |
f4c11551 | 1452 | notified = true; |
12e364b9 | 1453 | } |
bd0d2dcc | 1454 | } else if (state.alive == segment_state_paused.alive && |
3f833b54 | 1455 | state.operating == |
bd0d2dcc | 1456 | segment_state_paused.operating) { |
12e364b9 KC |
1457 | /* this is lite pause where channel is |
1458 | * still valid just 'pause' of it | |
1459 | */ | |
2836c6a8 BR |
1460 | if (bus_no == g_diagpool_bus_no && |
1461 | dev_no == g_diagpool_dev_no) { | |
12e364b9 KC |
1462 | /* this will trigger the |
1463 | * diag_shutdown.sh script in | |
1464 | * the visorchipset hotplug */ | |
1465 | kobject_uevent_env | |
eb34e877 | 1466 | (&visorchipset_platform_device.dev. |
12e364b9 KC |
1467 | kobj, KOBJ_ONLINE, envp); |
1468 | } | |
1469 | } | |
1470 | break; | |
1471 | case CONTROLVM_DEVICE_DESTROY: | |
1472 | if (notifiers->device_destroy) { | |
2836c6a8 | 1473 | (*notifiers->device_destroy) (bus_no, dev_no); |
f4c11551 | 1474 | notified = true; |
12e364b9 KC |
1475 | } |
1476 | break; | |
1477 | } | |
1478 | } | |
1479 | if (notified) | |
1480 | /* The callback function just called above is responsible | |
929aa8ae | 1481 | * for calling the appropriate visorchipset_busdev_responders |
12e364b9 KC |
1482 | * function, which will call device_responder() |
1483 | */ | |
1484 | ; | |
1485 | else | |
2836c6a8 | 1486 | device_responder(cmd, bus_no, dev_no, response); |
8f1947ac | 1487 | up(¬ifier_lock); |
12e364b9 KC |
1488 | } |
1489 | ||
1490 | static void | |
3ab47701 | 1491 | bus_create(struct controlvm_message *inmsg) |
12e364b9 | 1492 | { |
2ea5117b | 1493 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
52063eca | 1494 | u32 bus_no = cmd->create_bus.bus_no; |
12e364b9 | 1495 | int rc = CONTROLVM_RESP_SUCCESS; |
e82ba62e | 1496 | struct visorchipset_bus_info *bus_info; |
12e364b9 | 1497 | |
4f66520b | 1498 | bus_info = bus_find(&bus_info_list, bus_no); |
6c5fed35 BR |
1499 | if (bus_info && (bus_info->state.created == 1)) { |
1500 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus_no, | |
12e364b9 | 1501 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1502 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
6c5fed35 | 1503 | goto cleanup; |
12e364b9 | 1504 | } |
6c5fed35 BR |
1505 | bus_info = kzalloc(sizeof(*bus_info), GFP_KERNEL); |
1506 | if (!bus_info) { | |
1507 | POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus_no, | |
12e364b9 | 1508 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1509 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
6c5fed35 | 1510 | goto cleanup; |
12e364b9 KC |
1511 | } |
1512 | ||
6c5fed35 BR |
1513 | INIT_LIST_HEAD(&bus_info->entry); |
1514 | bus_info->bus_no = bus_no; | |
12e364b9 | 1515 | |
6c5fed35 | 1516 | POSTCODE_LINUX_3(BUS_CREATE_ENTRY_PC, bus_no, POSTCODE_SEVERITY_INFO); |
12e364b9 | 1517 | |
98d7b594 | 1518 | if (inmsg->hdr.flags.test_message == 1) |
6c5fed35 | 1519 | bus_info->chan_info.addr_type = ADDRTYPE_LOCALTEST; |
12e364b9 | 1520 | else |
6c5fed35 | 1521 | bus_info->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL; |
12e364b9 | 1522 | |
6c5fed35 BR |
1523 | bus_info->flags.server = inmsg->hdr.flags.server; |
1524 | bus_info->chan_info.channel_addr = cmd->create_bus.channel_addr; | |
1525 | bus_info->chan_info.n_channel_bytes = cmd->create_bus.channel_bytes; | |
1526 | bus_info->chan_info.channel_type_uuid = | |
9b1caee7 | 1527 | cmd->create_bus.bus_data_type_uuid; |
6c5fed35 | 1528 | bus_info->chan_info.channel_inst_uuid = cmd->create_bus.bus_inst_uuid; |
12e364b9 | 1529 | |
6c5fed35 | 1530 | list_add(&bus_info->entry, &bus_info_list); |
12e364b9 | 1531 | |
6c5fed35 | 1532 | POSTCODE_LINUX_3(BUS_CREATE_EXIT_PC, bus_no, POSTCODE_SEVERITY_INFO); |
12e364b9 | 1533 | |
6c5fed35 BR |
1534 | cleanup: |
1535 | bus_epilog(bus_no, CONTROLVM_BUS_CREATE, &inmsg->hdr, | |
98d7b594 | 1536 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1537 | } |
1538 | ||
1539 | static void | |
3ab47701 | 1540 | bus_destroy(struct controlvm_message *inmsg) |
12e364b9 | 1541 | { |
2ea5117b | 1542 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
52063eca | 1543 | u32 bus_no = cmd->destroy_bus.bus_no; |
dff54cd6 | 1544 | struct visorchipset_bus_info *bus_info; |
12e364b9 KC |
1545 | int rc = CONTROLVM_RESP_SUCCESS; |
1546 | ||
4f66520b | 1547 | bus_info = bus_find(&bus_info_list, bus_no); |
dff54cd6 | 1548 | if (!bus_info) |
22ad57ba | 1549 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
dff54cd6 | 1550 | else if (bus_info->state.created == 0) |
22ad57ba | 1551 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
12e364b9 | 1552 | |
dff54cd6 | 1553 | bus_epilog(bus_no, CONTROLVM_BUS_DESTROY, &inmsg->hdr, |
98d7b594 | 1554 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1555 | } |
1556 | ||
1557 | static void | |
317d9614 BR |
1558 | bus_configure(struct controlvm_message *inmsg, |
1559 | struct parser_context *parser_ctx) | |
12e364b9 | 1560 | { |
2ea5117b | 1561 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
e82ba62e JS |
1562 | u32 bus_no; |
1563 | struct visorchipset_bus_info *bus_info; | |
12e364b9 KC |
1564 | int rc = CONTROLVM_RESP_SUCCESS; |
1565 | char s[99]; | |
1566 | ||
654bada0 BR |
1567 | bus_no = cmd->configure_bus.bus_no; |
1568 | POSTCODE_LINUX_3(BUS_CONFIGURE_ENTRY_PC, bus_no, | |
1569 | POSTCODE_SEVERITY_INFO); | |
12e364b9 | 1570 | |
4f66520b | 1571 | bus_info = bus_find(&bus_info_list, bus_no); |
654bada0 BR |
1572 | if (!bus_info) { |
1573 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, bus_no, | |
12e364b9 | 1574 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1575 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
654bada0 BR |
1576 | } else if (bus_info->state.created == 0) { |
1577 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, bus_no, | |
12e364b9 | 1578 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1579 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
654bada0 BR |
1580 | } else if (bus_info->pending_msg_hdr.id != CONTROLVM_INVALID) { |
1581 | POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, bus_no, | |
12e364b9 | 1582 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1583 | rc = -CONTROLVM_RESP_ERROR_MESSAGE_ID_INVALID_FOR_CLIENT; |
654bada0 BR |
1584 | } else { |
1585 | bus_info->partition_handle = cmd->configure_bus.guest_handle; | |
1586 | bus_info->partition_uuid = parser_id_get(parser_ctx); | |
1587 | parser_param_start(parser_ctx, PARSERSTRING_NAME); | |
1588 | bus_info->name = parser_string_get(parser_ctx); | |
1589 | ||
1590 | visorchannel_uuid_id(&bus_info->partition_uuid, s); | |
1591 | POSTCODE_LINUX_3(BUS_CONFIGURE_EXIT_PC, bus_no, | |
1592 | POSTCODE_SEVERITY_INFO); | |
12e364b9 | 1593 | } |
654bada0 | 1594 | bus_epilog(bus_no, CONTROLVM_BUS_CONFIGURE, &inmsg->hdr, |
98d7b594 | 1595 | rc, inmsg->hdr.flags.response_expected == 1); |
12e364b9 KC |
1596 | } |
1597 | ||
1598 | static void | |
3ab47701 | 1599 | my_device_create(struct controlvm_message *inmsg) |
12e364b9 | 1600 | { |
2ea5117b | 1601 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
52063eca JS |
1602 | u32 bus_no = cmd->create_device.bus_no; |
1603 | u32 dev_no = cmd->create_device.dev_no; | |
e82ba62e JS |
1604 | struct visorchipset_device_info *dev_info; |
1605 | struct visorchipset_bus_info *bus_info; | |
12e364b9 KC |
1606 | int rc = CONTROLVM_RESP_SUCCESS; |
1607 | ||
d480f6a2 | 1608 | dev_info = device_find(&dev_info_list, bus_no, dev_no); |
c60c8e26 BR |
1609 | if (dev_info && (dev_info->state.created == 1)) { |
1610 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no, | |
12e364b9 | 1611 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1612 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
c60c8e26 | 1613 | goto cleanup; |
12e364b9 | 1614 | } |
4f66520b | 1615 | bus_info = bus_find(&bus_info_list, bus_no); |
c60c8e26 BR |
1616 | if (!bus_info) { |
1617 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no, | |
12e364b9 | 1618 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1619 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
c60c8e26 | 1620 | goto cleanup; |
12e364b9 | 1621 | } |
c60c8e26 BR |
1622 | if (bus_info->state.created == 0) { |
1623 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no, | |
12e364b9 | 1624 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1625 | rc = -CONTROLVM_RESP_ERROR_BUS_INVALID; |
c60c8e26 | 1626 | goto cleanup; |
12e364b9 | 1627 | } |
c60c8e26 BR |
1628 | dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL); |
1629 | if (!dev_info) { | |
1630 | POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, dev_no, bus_no, | |
12e364b9 | 1631 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1632 | rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED; |
c60c8e26 | 1633 | goto cleanup; |
12e364b9 | 1634 | } |
97a84f12 | 1635 | |
c60c8e26 BR |
1636 | INIT_LIST_HEAD(&dev_info->entry); |
1637 | dev_info->bus_no = bus_no; | |
1638 | dev_info->dev_no = dev_no; | |
1639 | dev_info->dev_inst_uuid = cmd->create_device.dev_inst_uuid; | |
1640 | POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC, dev_no, bus_no, | |
12e364b9 KC |
1641 | POSTCODE_SEVERITY_INFO); |
1642 | ||
98d7b594 | 1643 | if (inmsg->hdr.flags.test_message == 1) |
c60c8e26 | 1644 | dev_info->chan_info.addr_type = ADDRTYPE_LOCALTEST; |
12e364b9 | 1645 | else |
c60c8e26 BR |
1646 | dev_info->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL; |
1647 | dev_info->chan_info.channel_addr = cmd->create_device.channel_addr; | |
1648 | dev_info->chan_info.n_channel_bytes = cmd->create_device.channel_bytes; | |
1649 | dev_info->chan_info.channel_type_uuid = | |
9b1caee7 | 1650 | cmd->create_device.data_type_uuid; |
c60c8e26 BR |
1651 | dev_info->chan_info.intr = cmd->create_device.intr; |
1652 | list_add(&dev_info->entry, &dev_info_list); | |
1653 | POSTCODE_LINUX_4(DEVICE_CREATE_EXIT_PC, dev_no, bus_no, | |
12e364b9 | 1654 | POSTCODE_SEVERITY_INFO); |
c60c8e26 | 1655 | cleanup: |
12e364b9 | 1656 | /* get the bus and devNo for DiagPool channel */ |
c60c8e26 BR |
1657 | if (dev_info && |
1658 | is_diagpool_channel(dev_info->chan_info.channel_type_uuid)) { | |
1659 | g_diagpool_bus_no = bus_no; | |
1660 | g_diagpool_dev_no = dev_no; | |
12e364b9 | 1661 | } |
c60c8e26 | 1662 | device_epilog(bus_no, dev_no, segment_state_running, |
12e364b9 | 1663 | CONTROLVM_DEVICE_CREATE, &inmsg->hdr, rc, |
98d7b594 | 1664 | inmsg->hdr.flags.response_expected == 1, |
c60c8e26 | 1665 | FOR_VISORBUS(dev_info->chan_info.channel_type_uuid)); |
12e364b9 KC |
1666 | } |
1667 | ||
1668 | static void | |
3ab47701 | 1669 | my_device_changestate(struct controlvm_message *inmsg) |
12e364b9 | 1670 | { |
2ea5117b | 1671 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
52063eca JS |
1672 | u32 bus_no = cmd->device_change_state.bus_no; |
1673 | u32 dev_no = cmd->device_change_state.dev_no; | |
2ea5117b | 1674 | struct spar_segment_state state = cmd->device_change_state.state; |
e82ba62e | 1675 | struct visorchipset_device_info *dev_info; |
12e364b9 KC |
1676 | int rc = CONTROLVM_RESP_SUCCESS; |
1677 | ||
d480f6a2 | 1678 | dev_info = device_find(&dev_info_list, bus_no, dev_no); |
0278a905 BR |
1679 | if (!dev_info) { |
1680 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, dev_no, bus_no, | |
12e364b9 | 1681 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1682 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
0278a905 BR |
1683 | } else if (dev_info->state.created == 0) { |
1684 | POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, dev_no, bus_no, | |
12e364b9 | 1685 | POSTCODE_SEVERITY_ERR); |
22ad57ba | 1686 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
12e364b9 | 1687 | } |
0278a905 BR |
1688 | if ((rc >= CONTROLVM_RESP_SUCCESS) && dev_info) |
1689 | device_epilog(bus_no, dev_no, state, | |
1690 | CONTROLVM_DEVICE_CHANGESTATE, &inmsg->hdr, rc, | |
98d7b594 | 1691 | inmsg->hdr.flags.response_expected == 1, |
9b1caee7 | 1692 | FOR_VISORBUS( |
0278a905 | 1693 | dev_info->chan_info.channel_type_uuid)); |
12e364b9 KC |
1694 | } |
1695 | ||
1696 | static void | |
3ab47701 | 1697 | my_device_destroy(struct controlvm_message *inmsg) |
12e364b9 | 1698 | { |
2ea5117b | 1699 | struct controlvm_message_packet *cmd = &inmsg->cmd; |
52063eca JS |
1700 | u32 bus_no = cmd->destroy_device.bus_no; |
1701 | u32 dev_no = cmd->destroy_device.dev_no; | |
e82ba62e | 1702 | struct visorchipset_device_info *dev_info; |
12e364b9 KC |
1703 | int rc = CONTROLVM_RESP_SUCCESS; |
1704 | ||
d480f6a2 | 1705 | dev_info = device_find(&dev_info_list, bus_no, dev_no); |
61715c8b | 1706 | if (!dev_info) |
22ad57ba | 1707 | rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID; |
61715c8b | 1708 | else if (dev_info->state.created == 0) |
22ad57ba | 1709 | rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE; |
12e364b9 | 1710 | |
61715c8b BR |
1711 | if ((rc >= CONTROLVM_RESP_SUCCESS) && dev_info) |
1712 | device_epilog(bus_no, dev_no, segment_state_running, | |
12e364b9 | 1713 | CONTROLVM_DEVICE_DESTROY, &inmsg->hdr, rc, |
98d7b594 | 1714 | inmsg->hdr.flags.response_expected == 1, |
9b1caee7 | 1715 | FOR_VISORBUS( |
61715c8b | 1716 | dev_info->chan_info.channel_type_uuid)); |
12e364b9 KC |
1717 | } |
1718 | ||
1719 | /* When provided with the physical address of the controlvm channel | |
1720 | * (phys_addr), the offset to the payload area we need to manage | |
1721 | * (offset), and the size of this payload area (bytes), fills in the | |
f4c11551 | 1722 | * controlvm_payload_info struct. Returns true for success or false |
12e364b9 KC |
1723 | * for failure. |
1724 | */ | |
1725 | static int | |
5fc0229a | 1726 | initialize_controlvm_payload_info(HOSTADDRESS phys_addr, u64 offset, u32 bytes, |
c1f834eb | 1727 | struct visor_controlvm_payload_info *info) |
12e364b9 | 1728 | { |
c242233e | 1729 | u8 __iomem *payload = NULL; |
12e364b9 KC |
1730 | int rc = CONTROLVM_RESP_SUCCESS; |
1731 | ||
38f736e9 | 1732 | if (!info) { |
22ad57ba | 1733 | rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
f118a39b | 1734 | goto cleanup; |
12e364b9 | 1735 | } |
c1f834eb | 1736 | memset(info, 0, sizeof(struct visor_controlvm_payload_info)); |
12e364b9 | 1737 | if ((offset == 0) || (bytes == 0)) { |
22ad57ba | 1738 | rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID; |
f118a39b | 1739 | goto cleanup; |
12e364b9 KC |
1740 | } |
1741 | payload = ioremap_cache(phys_addr + offset, bytes); | |
38f736e9 | 1742 | if (!payload) { |
22ad57ba | 1743 | rc = -CONTROLVM_RESP_ERROR_IOREMAP_FAILED; |
f118a39b | 1744 | goto cleanup; |
12e364b9 KC |
1745 | } |
1746 | ||
1747 | info->offset = offset; | |
1748 | info->bytes = bytes; | |
1749 | info->ptr = payload; | |
12e364b9 | 1750 | |
f118a39b | 1751 | cleanup: |
12e364b9 | 1752 | if (rc < 0) { |
f118a39b | 1753 | if (payload) { |
12e364b9 KC |
1754 | iounmap(payload); |
1755 | payload = NULL; | |
1756 | } | |
1757 | } | |
1758 | return rc; | |
1759 | } | |
1760 | ||
1761 | static void | |
c1f834eb | 1762 | destroy_controlvm_payload_info(struct visor_controlvm_payload_info *info) |
12e364b9 | 1763 | { |
597c338f | 1764 | if (info->ptr) { |
12e364b9 KC |
1765 | iounmap(info->ptr); |
1766 | info->ptr = NULL; | |
1767 | } | |
c1f834eb | 1768 | memset(info, 0, sizeof(struct visor_controlvm_payload_info)); |
12e364b9 KC |
1769 | } |
1770 | ||
1771 | static void | |
1772 | initialize_controlvm_payload(void) | |
1773 | { | |
c3d9a224 | 1774 | HOSTADDRESS phys_addr = visorchannel_get_physaddr(controlvm_channel); |
cafefc0c BR |
1775 | u64 payload_offset = 0; |
1776 | u32 payload_bytes = 0; | |
26eb2c0c | 1777 | |
c3d9a224 | 1778 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
1779 | offsetof(struct spar_controlvm_channel_protocol, |
1780 | request_payload_offset), | |
cafefc0c | 1781 | &payload_offset, sizeof(payload_offset)) < 0) { |
12e364b9 KC |
1782 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, |
1783 | POSTCODE_SEVERITY_ERR); | |
1784 | return; | |
1785 | } | |
c3d9a224 | 1786 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
1787 | offsetof(struct spar_controlvm_channel_protocol, |
1788 | request_payload_bytes), | |
cafefc0c | 1789 | &payload_bytes, sizeof(payload_bytes)) < 0) { |
12e364b9 KC |
1790 | POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC, |
1791 | POSTCODE_SEVERITY_ERR); | |
1792 | return; | |
1793 | } | |
1794 | initialize_controlvm_payload_info(phys_addr, | |
cafefc0c | 1795 | payload_offset, payload_bytes, |
84982fbf | 1796 | &controlvm_payload_info); |
12e364b9 KC |
1797 | } |
1798 | ||
1799 | /* Send ACTION=online for DEVPATH=/sys/devices/platform/visorchipset. | |
1800 | * Returns CONTROLVM_RESP_xxx code. | |
1801 | */ | |
1802 | int | |
1803 | visorchipset_chipset_ready(void) | |
1804 | { | |
eb34e877 | 1805 | kobject_uevent(&visorchipset_platform_device.dev.kobj, KOBJ_ONLINE); |
12e364b9 KC |
1806 | return CONTROLVM_RESP_SUCCESS; |
1807 | } | |
1808 | EXPORT_SYMBOL_GPL(visorchipset_chipset_ready); | |
1809 | ||
1810 | int | |
1811 | visorchipset_chipset_selftest(void) | |
1812 | { | |
1813 | char env_selftest[20]; | |
1814 | char *envp[] = { env_selftest, NULL }; | |
26eb2c0c | 1815 | |
12e364b9 | 1816 | sprintf(env_selftest, "SPARSP_SELFTEST=%d", 1); |
eb34e877 | 1817 | kobject_uevent_env(&visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, |
12e364b9 KC |
1818 | envp); |
1819 | return CONTROLVM_RESP_SUCCESS; | |
1820 | } | |
1821 | EXPORT_SYMBOL_GPL(visorchipset_chipset_selftest); | |
1822 | ||
1823 | /* Send ACTION=offline for DEVPATH=/sys/devices/platform/visorchipset. | |
1824 | * Returns CONTROLVM_RESP_xxx code. | |
1825 | */ | |
1826 | int | |
1827 | visorchipset_chipset_notready(void) | |
1828 | { | |
eb34e877 | 1829 | kobject_uevent(&visorchipset_platform_device.dev.kobj, KOBJ_OFFLINE); |
12e364b9 KC |
1830 | return CONTROLVM_RESP_SUCCESS; |
1831 | } | |
1832 | EXPORT_SYMBOL_GPL(visorchipset_chipset_notready); | |
1833 | ||
1834 | static void | |
77a0449d | 1835 | chipset_ready(struct controlvm_message_header *msg_hdr) |
12e364b9 KC |
1836 | { |
1837 | int rc = visorchipset_chipset_ready(); | |
26eb2c0c | 1838 | |
12e364b9 KC |
1839 | if (rc != CONTROLVM_RESP_SUCCESS) |
1840 | rc = -rc; | |
77a0449d BR |
1841 | if (msg_hdr->flags.response_expected && !visorchipset_holdchipsetready) |
1842 | controlvm_respond(msg_hdr, rc); | |
1843 | if (msg_hdr->flags.response_expected && visorchipset_holdchipsetready) { | |
12e364b9 KC |
1844 | /* Send CHIPSET_READY response when all modules have been loaded |
1845 | * and disks mounted for the partition | |
1846 | */ | |
77a0449d | 1847 | g_chipset_msg_hdr = *msg_hdr; |
12e364b9 KC |
1848 | } |
1849 | } | |
1850 | ||
1851 | static void | |
77a0449d | 1852 | chipset_selftest(struct controlvm_message_header *msg_hdr) |
12e364b9 KC |
1853 | { |
1854 | int rc = visorchipset_chipset_selftest(); | |
26eb2c0c | 1855 | |
12e364b9 KC |
1856 | if (rc != CONTROLVM_RESP_SUCCESS) |
1857 | rc = -rc; | |
77a0449d BR |
1858 | if (msg_hdr->flags.response_expected) |
1859 | controlvm_respond(msg_hdr, rc); | |
12e364b9 KC |
1860 | } |
1861 | ||
1862 | static void | |
77a0449d | 1863 | chipset_notready(struct controlvm_message_header *msg_hdr) |
12e364b9 KC |
1864 | { |
1865 | int rc = visorchipset_chipset_notready(); | |
26eb2c0c | 1866 | |
12e364b9 KC |
1867 | if (rc != CONTROLVM_RESP_SUCCESS) |
1868 | rc = -rc; | |
77a0449d BR |
1869 | if (msg_hdr->flags.response_expected) |
1870 | controlvm_respond(msg_hdr, rc); | |
12e364b9 KC |
1871 | } |
1872 | ||
1873 | /* This is your "one-stop" shop for grabbing the next message from the | |
1874 | * CONTROLVM_QUEUE_EVENT queue in the controlvm channel. | |
1875 | */ | |
f4c11551 | 1876 | static bool |
3ab47701 | 1877 | read_controlvm_event(struct controlvm_message *msg) |
12e364b9 | 1878 | { |
c3d9a224 | 1879 | if (visorchannel_signalremove(controlvm_channel, |
12e364b9 KC |
1880 | CONTROLVM_QUEUE_EVENT, msg)) { |
1881 | /* got a message */ | |
0aca7844 | 1882 | if (msg->hdr.flags.test_message == 1) |
f4c11551 JS |
1883 | return false; |
1884 | return true; | |
12e364b9 | 1885 | } |
f4c11551 | 1886 | return false; |
12e364b9 KC |
1887 | } |
1888 | ||
1889 | /* | |
1890 | * The general parahotplug flow works as follows. The visorchipset | |
1891 | * driver receives a DEVICE_CHANGESTATE message from Command | |
1892 | * specifying a physical device to enable or disable. The CONTROLVM | |
1893 | * message handler calls parahotplug_process_message, which then adds | |
1894 | * the message to a global list and kicks off a udev event which | |
1895 | * causes a user level script to enable or disable the specified | |
1896 | * device. The udev script then writes to | |
1897 | * /proc/visorchipset/parahotplug, which causes parahotplug_proc_write | |
1898 | * to get called, at which point the appropriate CONTROLVM message is | |
1899 | * retrieved from the list and responded to. | |
1900 | */ | |
1901 | ||
1902 | #define PARAHOTPLUG_TIMEOUT_MS 2000 | |
1903 | ||
1904 | /* | |
1905 | * Generate unique int to match an outstanding CONTROLVM message with a | |
1906 | * udev script /proc response | |
1907 | */ | |
1908 | static int | |
1909 | parahotplug_next_id(void) | |
1910 | { | |
1911 | static atomic_t id = ATOMIC_INIT(0); | |
26eb2c0c | 1912 | |
12e364b9 KC |
1913 | return atomic_inc_return(&id); |
1914 | } | |
1915 | ||
1916 | /* | |
1917 | * Returns the time (in jiffies) when a CONTROLVM message on the list | |
1918 | * should expire -- PARAHOTPLUG_TIMEOUT_MS in the future | |
1919 | */ | |
1920 | static unsigned long | |
1921 | parahotplug_next_expiration(void) | |
1922 | { | |
2cc1a1b3 | 1923 | return jiffies + msecs_to_jiffies(PARAHOTPLUG_TIMEOUT_MS); |
12e364b9 KC |
1924 | } |
1925 | ||
1926 | /* | |
1927 | * Create a parahotplug_request, which is basically a wrapper for a | |
1928 | * CONTROLVM_MESSAGE that we can stick on a list | |
1929 | */ | |
1930 | static struct parahotplug_request * | |
3ab47701 | 1931 | parahotplug_request_create(struct controlvm_message *msg) |
12e364b9 | 1932 | { |
ea0dcfcf QL |
1933 | struct parahotplug_request *req; |
1934 | ||
6a55e3c3 | 1935 | req = kmalloc(sizeof(*req), GFP_KERNEL | __GFP_NORETRY); |
38f736e9 | 1936 | if (!req) |
12e364b9 KC |
1937 | return NULL; |
1938 | ||
1939 | req->id = parahotplug_next_id(); | |
1940 | req->expiration = parahotplug_next_expiration(); | |
1941 | req->msg = *msg; | |
1942 | ||
1943 | return req; | |
1944 | } | |
1945 | ||
1946 | /* | |
1947 | * Free a parahotplug_request. | |
1948 | */ | |
1949 | static void | |
1950 | parahotplug_request_destroy(struct parahotplug_request *req) | |
1951 | { | |
1952 | kfree(req); | |
1953 | } | |
1954 | ||
1955 | /* | |
1956 | * Cause uevent to run the user level script to do the disable/enable | |
1957 | * specified in (the CONTROLVM message in) the specified | |
1958 | * parahotplug_request | |
1959 | */ | |
1960 | static void | |
1961 | parahotplug_request_kickoff(struct parahotplug_request *req) | |
1962 | { | |
2ea5117b | 1963 | struct controlvm_message_packet *cmd = &req->msg.cmd; |
12e364b9 KC |
1964 | char env_cmd[40], env_id[40], env_state[40], env_bus[40], env_dev[40], |
1965 | env_func[40]; | |
1966 | char *envp[] = { | |
1967 | env_cmd, env_id, env_state, env_bus, env_dev, env_func, NULL | |
1968 | }; | |
1969 | ||
1970 | sprintf(env_cmd, "SPAR_PARAHOTPLUG=1"); | |
1971 | sprintf(env_id, "SPAR_PARAHOTPLUG_ID=%d", req->id); | |
1972 | sprintf(env_state, "SPAR_PARAHOTPLUG_STATE=%d", | |
2ea5117b | 1973 | cmd->device_change_state.state.active); |
12e364b9 | 1974 | sprintf(env_bus, "SPAR_PARAHOTPLUG_BUS=%d", |
2ea5117b | 1975 | cmd->device_change_state.bus_no); |
12e364b9 | 1976 | sprintf(env_dev, "SPAR_PARAHOTPLUG_DEVICE=%d", |
2ea5117b | 1977 | cmd->device_change_state.dev_no >> 3); |
12e364b9 | 1978 | sprintf(env_func, "SPAR_PARAHOTPLUG_FUNCTION=%d", |
2ea5117b | 1979 | cmd->device_change_state.dev_no & 0x7); |
12e364b9 | 1980 | |
eb34e877 | 1981 | kobject_uevent_env(&visorchipset_platform_device.dev.kobj, KOBJ_CHANGE, |
12e364b9 KC |
1982 | envp); |
1983 | } | |
1984 | ||
1985 | /* | |
1986 | * Remove any request from the list that's been on there too long and | |
1987 | * respond with an error. | |
1988 | */ | |
1989 | static void | |
1990 | parahotplug_process_list(void) | |
1991 | { | |
e82ba62e JS |
1992 | struct list_head *pos; |
1993 | struct list_head *tmp; | |
12e364b9 | 1994 | |
ddf5de53 | 1995 | spin_lock(¶hotplug_request_list_lock); |
12e364b9 | 1996 | |
ddf5de53 | 1997 | list_for_each_safe(pos, tmp, ¶hotplug_request_list) { |
12e364b9 KC |
1998 | struct parahotplug_request *req = |
1999 | list_entry(pos, struct parahotplug_request, list); | |
55b33413 BR |
2000 | |
2001 | if (!time_after_eq(jiffies, req->expiration)) | |
2002 | continue; | |
2003 | ||
2004 | list_del(pos); | |
2005 | if (req->msg.hdr.flags.response_expected) | |
2006 | controlvm_respond_physdev_changestate( | |
2007 | &req->msg.hdr, | |
2008 | CONTROLVM_RESP_ERROR_DEVICE_UDEV_TIMEOUT, | |
2009 | req->msg.cmd.device_change_state.state); | |
2010 | parahotplug_request_destroy(req); | |
12e364b9 KC |
2011 | } |
2012 | ||
ddf5de53 | 2013 | spin_unlock(¶hotplug_request_list_lock); |
12e364b9 KC |
2014 | } |
2015 | ||
2016 | /* | |
2017 | * Called from the /proc handler, which means the user script has | |
2018 | * finished the enable/disable. Find the matching identifier, and | |
2019 | * respond to the CONTROLVM message with success. | |
2020 | */ | |
2021 | static int | |
b06bdf7d | 2022 | parahotplug_request_complete(int id, u16 active) |
12e364b9 | 2023 | { |
e82ba62e JS |
2024 | struct list_head *pos; |
2025 | struct list_head *tmp; | |
12e364b9 | 2026 | |
ddf5de53 | 2027 | spin_lock(¶hotplug_request_list_lock); |
12e364b9 KC |
2028 | |
2029 | /* Look for a request matching "id". */ | |
ddf5de53 | 2030 | list_for_each_safe(pos, tmp, ¶hotplug_request_list) { |
12e364b9 KC |
2031 | struct parahotplug_request *req = |
2032 | list_entry(pos, struct parahotplug_request, list); | |
2033 | if (req->id == id) { | |
2034 | /* Found a match. Remove it from the list and | |
2035 | * respond. | |
2036 | */ | |
2037 | list_del(pos); | |
ddf5de53 | 2038 | spin_unlock(¶hotplug_request_list_lock); |
2ea5117b | 2039 | req->msg.cmd.device_change_state.state.active = active; |
98d7b594 | 2040 | if (req->msg.hdr.flags.response_expected) |
12e364b9 KC |
2041 | controlvm_respond_physdev_changestate( |
2042 | &req->msg.hdr, CONTROLVM_RESP_SUCCESS, | |
2ea5117b | 2043 | req->msg.cmd.device_change_state.state); |
12e364b9 KC |
2044 | parahotplug_request_destroy(req); |
2045 | return 0; | |
2046 | } | |
2047 | } | |
2048 | ||
ddf5de53 | 2049 | spin_unlock(¶hotplug_request_list_lock); |
12e364b9 KC |
2050 | return -1; |
2051 | } | |
2052 | ||
2053 | /* | |
2054 | * Enables or disables a PCI device by kicking off a udev script | |
2055 | */ | |
bd5b9b32 | 2056 | static void |
3ab47701 | 2057 | parahotplug_process_message(struct controlvm_message *inmsg) |
12e364b9 KC |
2058 | { |
2059 | struct parahotplug_request *req; | |
2060 | ||
2061 | req = parahotplug_request_create(inmsg); | |
2062 | ||
38f736e9 | 2063 | if (!req) |
12e364b9 | 2064 | return; |
12e364b9 | 2065 | |
2ea5117b | 2066 | if (inmsg->cmd.device_change_state.state.active) { |
12e364b9 KC |
2067 | /* For enable messages, just respond with success |
2068 | * right away. This is a bit of a hack, but there are | |
2069 | * issues with the early enable messages we get (with | |
2070 | * either the udev script not detecting that the device | |
2071 | * is up, or not getting called at all). Fortunately | |
2072 | * the messages that get lost don't matter anyway, as | |
2073 | * devices are automatically enabled at | |
2074 | * initialization. | |
2075 | */ | |
2076 | parahotplug_request_kickoff(req); | |
2077 | controlvm_respond_physdev_changestate(&inmsg->hdr, | |
8e76e695 BR |
2078 | CONTROLVM_RESP_SUCCESS, |
2079 | inmsg->cmd.device_change_state.state); | |
12e364b9 KC |
2080 | parahotplug_request_destroy(req); |
2081 | } else { | |
2082 | /* For disable messages, add the request to the | |
2083 | * request list before kicking off the udev script. It | |
2084 | * won't get responded to until the script has | |
2085 | * indicated it's done. | |
2086 | */ | |
ddf5de53 BR |
2087 | spin_lock(¶hotplug_request_list_lock); |
2088 | list_add_tail(&req->list, ¶hotplug_request_list); | |
2089 | spin_unlock(¶hotplug_request_list_lock); | |
12e364b9 KC |
2090 | |
2091 | parahotplug_request_kickoff(req); | |
2092 | } | |
2093 | } | |
2094 | ||
12e364b9 KC |
2095 | /* Process a controlvm message. |
2096 | * Return result: | |
f4c11551 | 2097 | * false - this function will return FALSE only in the case where the |
12e364b9 KC |
2098 | * controlvm message was NOT processed, but processing must be |
2099 | * retried before reading the next controlvm message; a | |
2100 | * scenario where this can occur is when we need to throttle | |
2101 | * the allocation of memory in which to copy out controlvm | |
2102 | * payload data | |
f4c11551 | 2103 | * true - processing of the controlvm message completed, |
12e364b9 KC |
2104 | * either successfully or with an error. |
2105 | */ | |
f4c11551 | 2106 | static bool |
3ab47701 | 2107 | handle_command(struct controlvm_message inmsg, HOSTADDRESS channel_addr) |
12e364b9 | 2108 | { |
2ea5117b | 2109 | struct controlvm_message_packet *cmd = &inmsg.cmd; |
e82ba62e JS |
2110 | u64 parm_addr; |
2111 | u32 parm_bytes; | |
317d9614 | 2112 | struct parser_context *parser_ctx = NULL; |
e82ba62e | 2113 | bool local_addr; |
3ab47701 | 2114 | struct controlvm_message ackmsg; |
12e364b9 KC |
2115 | |
2116 | /* create parsing context if necessary */ | |
818352a8 | 2117 | local_addr = (inmsg.hdr.flags.test_message == 1); |
0aca7844 | 2118 | if (channel_addr == 0) |
f4c11551 | 2119 | return true; |
818352a8 BR |
2120 | parm_addr = channel_addr + inmsg.hdr.payload_vm_offset; |
2121 | parm_bytes = inmsg.hdr.payload_bytes; | |
12e364b9 KC |
2122 | |
2123 | /* Parameter and channel addresses within test messages actually lie | |
2124 | * within our OS-controlled memory. We need to know that, because it | |
2125 | * makes a difference in how we compute the virtual address. | |
2126 | */ | |
ebec8967 | 2127 | if (parm_addr && parm_bytes) { |
f4c11551 | 2128 | bool retry = false; |
26eb2c0c | 2129 | |
12e364b9 | 2130 | parser_ctx = |
818352a8 BR |
2131 | parser_init_byte_stream(parm_addr, parm_bytes, |
2132 | local_addr, &retry); | |
1b08872e | 2133 | if (!parser_ctx && retry) |
f4c11551 | 2134 | return false; |
12e364b9 KC |
2135 | } |
2136 | ||
818352a8 | 2137 | if (!local_addr) { |
12e364b9 KC |
2138 | controlvm_init_response(&ackmsg, &inmsg.hdr, |
2139 | CONTROLVM_RESP_SUCCESS); | |
c3d9a224 BR |
2140 | if (controlvm_channel) |
2141 | visorchannel_signalinsert(controlvm_channel, | |
1b08872e BR |
2142 | CONTROLVM_QUEUE_ACK, |
2143 | &ackmsg); | |
12e364b9 | 2144 | } |
98d7b594 | 2145 | switch (inmsg.hdr.id) { |
12e364b9 | 2146 | case CONTROLVM_CHIPSET_INIT: |
12e364b9 KC |
2147 | chipset_init(&inmsg); |
2148 | break; | |
2149 | case CONTROLVM_BUS_CREATE: | |
12e364b9 KC |
2150 | bus_create(&inmsg); |
2151 | break; | |
2152 | case CONTROLVM_BUS_DESTROY: | |
12e364b9 KC |
2153 | bus_destroy(&inmsg); |
2154 | break; | |
2155 | case CONTROLVM_BUS_CONFIGURE: | |
12e364b9 KC |
2156 | bus_configure(&inmsg, parser_ctx); |
2157 | break; | |
2158 | case CONTROLVM_DEVICE_CREATE: | |
12e364b9 KC |
2159 | my_device_create(&inmsg); |
2160 | break; | |
2161 | case CONTROLVM_DEVICE_CHANGESTATE: | |
2ea5117b | 2162 | if (cmd->device_change_state.flags.phys_device) { |
12e364b9 KC |
2163 | parahotplug_process_message(&inmsg); |
2164 | } else { | |
12e364b9 KC |
2165 | /* save the hdr and cmd structures for later use */ |
2166 | /* when sending back the response to Command */ | |
2167 | my_device_changestate(&inmsg); | |
4f44b72d | 2168 | g_devicechangestate_packet = inmsg.cmd; |
12e364b9 KC |
2169 | break; |
2170 | } | |
2171 | break; | |
2172 | case CONTROLVM_DEVICE_DESTROY: | |
12e364b9 KC |
2173 | my_device_destroy(&inmsg); |
2174 | break; | |
2175 | case CONTROLVM_DEVICE_CONFIGURE: | |
12e364b9 | 2176 | /* no op for now, just send a respond that we passed */ |
98d7b594 | 2177 | if (inmsg.hdr.flags.response_expected) |
12e364b9 KC |
2178 | controlvm_respond(&inmsg.hdr, CONTROLVM_RESP_SUCCESS); |
2179 | break; | |
2180 | case CONTROLVM_CHIPSET_READY: | |
12e364b9 KC |
2181 | chipset_ready(&inmsg.hdr); |
2182 | break; | |
2183 | case CONTROLVM_CHIPSET_SELFTEST: | |
12e364b9 KC |
2184 | chipset_selftest(&inmsg.hdr); |
2185 | break; | |
2186 | case CONTROLVM_CHIPSET_STOP: | |
12e364b9 KC |
2187 | chipset_notready(&inmsg.hdr); |
2188 | break; | |
2189 | default: | |
98d7b594 | 2190 | if (inmsg.hdr.flags.response_expected) |
12e364b9 | 2191 | controlvm_respond(&inmsg.hdr, |
818352a8 | 2192 | -CONTROLVM_RESP_ERROR_MESSAGE_ID_UNKNOWN); |
12e364b9 KC |
2193 | break; |
2194 | } | |
2195 | ||
38f736e9 | 2196 | if (parser_ctx) { |
12e364b9 KC |
2197 | parser_done(parser_ctx); |
2198 | parser_ctx = NULL; | |
2199 | } | |
f4c11551 | 2200 | return true; |
12e364b9 KC |
2201 | } |
2202 | ||
d746cb55 | 2203 | static HOSTADDRESS controlvm_get_channel_address(void) |
524b0b63 | 2204 | { |
5fc0229a | 2205 | u64 addr = 0; |
b3c55b13 | 2206 | u32 size = 0; |
524b0b63 | 2207 | |
0aca7844 | 2208 | if (!VMCALL_SUCCESSFUL(issue_vmcall_io_controlvm_addr(&addr, &size))) |
524b0b63 | 2209 | return 0; |
0aca7844 | 2210 | |
524b0b63 BR |
2211 | return addr; |
2212 | } | |
2213 | ||
12e364b9 KC |
2214 | static void |
2215 | controlvm_periodic_work(struct work_struct *work) | |
2216 | { | |
3ab47701 | 2217 | struct controlvm_message inmsg; |
f4c11551 JS |
2218 | bool got_command = false; |
2219 | bool handle_command_failed = false; | |
1c1ed292 | 2220 | static u64 poll_count; |
12e364b9 KC |
2221 | |
2222 | /* make sure visorbus server is registered for controlvm callbacks */ | |
2223 | if (visorchipset_serverregwait && !serverregistered) | |
1c1ed292 | 2224 | goto cleanup; |
12e364b9 KC |
2225 | /* make sure visorclientbus server is regsitered for controlvm |
2226 | * callbacks | |
2227 | */ | |
2228 | if (visorchipset_clientregwait && !clientregistered) | |
1c1ed292 | 2229 | goto cleanup; |
12e364b9 | 2230 | |
1c1ed292 BR |
2231 | poll_count++; |
2232 | if (poll_count >= 250) | |
12e364b9 KC |
2233 | ; /* keep going */ |
2234 | else | |
1c1ed292 | 2235 | goto cleanup; |
12e364b9 KC |
2236 | |
2237 | /* Check events to determine if response to CHIPSET_READY | |
2238 | * should be sent | |
2239 | */ | |
0639ba67 BR |
2240 | if (visorchipset_holdchipsetready && |
2241 | (g_chipset_msg_hdr.id != CONTROLVM_INVALID)) { | |
12e364b9 | 2242 | if (check_chipset_events() == 1) { |
da021f02 | 2243 | controlvm_respond(&g_chipset_msg_hdr, 0); |
12e364b9 | 2244 | clear_chipset_events(); |
da021f02 | 2245 | memset(&g_chipset_msg_hdr, 0, |
98d7b594 | 2246 | sizeof(struct controlvm_message_header)); |
12e364b9 KC |
2247 | } |
2248 | } | |
2249 | ||
c3d9a224 | 2250 | while (visorchannel_signalremove(controlvm_channel, |
8a1182eb | 2251 | CONTROLVM_QUEUE_RESPONSE, |
c3d9a224 BR |
2252 | &inmsg)) |
2253 | ; | |
1c1ed292 | 2254 | if (!got_command) { |
7166ed19 | 2255 | if (controlvm_pending_msg_valid) { |
8a1182eb BR |
2256 | /* we throttled processing of a prior |
2257 | * msg, so try to process it again | |
2258 | * rather than reading a new one | |
2259 | */ | |
7166ed19 | 2260 | inmsg = controlvm_pending_msg; |
f4c11551 | 2261 | controlvm_pending_msg_valid = false; |
1c1ed292 | 2262 | got_command = true; |
75c1f8b7 | 2263 | } else { |
1c1ed292 | 2264 | got_command = read_controlvm_event(&inmsg); |
75c1f8b7 | 2265 | } |
8a1182eb | 2266 | } |
12e364b9 | 2267 | |
f4c11551 | 2268 | handle_command_failed = false; |
1c1ed292 | 2269 | while (got_command && (!handle_command_failed)) { |
b53e0e93 | 2270 | most_recent_message_jiffies = jiffies; |
8a1182eb BR |
2271 | if (handle_command(inmsg, |
2272 | visorchannel_get_physaddr | |
c3d9a224 | 2273 | (controlvm_channel))) |
1c1ed292 | 2274 | got_command = read_controlvm_event(&inmsg); |
8a1182eb BR |
2275 | else { |
2276 | /* this is a scenario where throttling | |
2277 | * is required, but probably NOT an | |
2278 | * error...; we stash the current | |
2279 | * controlvm msg so we will attempt to | |
2280 | * reprocess it on our next loop | |
2281 | */ | |
f4c11551 | 2282 | handle_command_failed = true; |
7166ed19 | 2283 | controlvm_pending_msg = inmsg; |
f4c11551 | 2284 | controlvm_pending_msg_valid = true; |
12e364b9 KC |
2285 | } |
2286 | } | |
2287 | ||
2288 | /* parahotplug_worker */ | |
2289 | parahotplug_process_list(); | |
2290 | ||
1c1ed292 | 2291 | cleanup: |
12e364b9 KC |
2292 | |
2293 | if (time_after(jiffies, | |
b53e0e93 | 2294 | most_recent_message_jiffies + (HZ * MIN_IDLE_SECONDS))) { |
12e364b9 KC |
2295 | /* it's been longer than MIN_IDLE_SECONDS since we |
2296 | * processed our last controlvm message; slow down the | |
2297 | * polling | |
2298 | */ | |
911e213e BR |
2299 | if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_SLOW) |
2300 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; | |
12e364b9 | 2301 | } else { |
911e213e BR |
2302 | if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_FAST) |
2303 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; | |
12e364b9 KC |
2304 | } |
2305 | ||
9232d2d6 BR |
2306 | queue_delayed_work(periodic_controlvm_workqueue, |
2307 | &periodic_controlvm_work, poll_jiffies); | |
12e364b9 KC |
2308 | } |
2309 | ||
2310 | static void | |
2311 | setup_crash_devices_work_queue(struct work_struct *work) | |
2312 | { | |
e6bdb904 BR |
2313 | struct controlvm_message local_crash_bus_msg; |
2314 | struct controlvm_message local_crash_dev_msg; | |
3ab47701 | 2315 | struct controlvm_message msg; |
e6bdb904 BR |
2316 | u32 local_crash_msg_offset; |
2317 | u16 local_crash_msg_count; | |
12e364b9 KC |
2318 | |
2319 | /* make sure visorbus server is registered for controlvm callbacks */ | |
2320 | if (visorchipset_serverregwait && !serverregistered) | |
e6bdb904 | 2321 | goto cleanup; |
12e364b9 KC |
2322 | |
2323 | /* make sure visorclientbus server is regsitered for controlvm | |
2324 | * callbacks | |
2325 | */ | |
2326 | if (visorchipset_clientregwait && !clientregistered) | |
e6bdb904 | 2327 | goto cleanup; |
12e364b9 KC |
2328 | |
2329 | POSTCODE_LINUX_2(CRASH_DEV_ENTRY_PC, POSTCODE_SEVERITY_INFO); | |
2330 | ||
2331 | /* send init chipset msg */ | |
98d7b594 | 2332 | msg.hdr.id = CONTROLVM_CHIPSET_INIT; |
2ea5117b BR |
2333 | msg.cmd.init_chipset.bus_count = 23; |
2334 | msg.cmd.init_chipset.switch_count = 0; | |
12e364b9 KC |
2335 | |
2336 | chipset_init(&msg); | |
2337 | ||
12e364b9 | 2338 | /* get saved message count */ |
c3d9a224 | 2339 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
2340 | offsetof(struct spar_controlvm_channel_protocol, |
2341 | saved_crash_message_count), | |
e6bdb904 | 2342 | &local_crash_msg_count, sizeof(u16)) < 0) { |
12e364b9 KC |
2343 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
2344 | POSTCODE_SEVERITY_ERR); | |
2345 | return; | |
2346 | } | |
2347 | ||
e6bdb904 | 2348 | if (local_crash_msg_count != CONTROLVM_CRASHMSG_MAX) { |
12e364b9 | 2349 | POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC, |
e6bdb904 | 2350 | local_crash_msg_count, |
12e364b9 KC |
2351 | POSTCODE_SEVERITY_ERR); |
2352 | return; | |
2353 | } | |
2354 | ||
2355 | /* get saved crash message offset */ | |
c3d9a224 | 2356 | if (visorchannel_read(controlvm_channel, |
d19642f6 BR |
2357 | offsetof(struct spar_controlvm_channel_protocol, |
2358 | saved_crash_message_offset), | |
e6bdb904 | 2359 | &local_crash_msg_offset, sizeof(u32)) < 0) { |
12e364b9 KC |
2360 | POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC, |
2361 | POSTCODE_SEVERITY_ERR); | |
2362 | return; | |
2363 | } | |
2364 | ||
2365 | /* read create device message for storage bus offset */ | |
c3d9a224 | 2366 | if (visorchannel_read(controlvm_channel, |
e6bdb904 BR |
2367 | local_crash_msg_offset, |
2368 | &local_crash_bus_msg, | |
3ab47701 | 2369 | sizeof(struct controlvm_message)) < 0) { |
12e364b9 KC |
2370 | POSTCODE_LINUX_2(CRASH_DEV_RD_BUS_FAIULRE_PC, |
2371 | POSTCODE_SEVERITY_ERR); | |
2372 | return; | |
2373 | } | |
2374 | ||
2375 | /* read create device message for storage device */ | |
c3d9a224 | 2376 | if (visorchannel_read(controlvm_channel, |
e6bdb904 | 2377 | local_crash_msg_offset + |
3ab47701 | 2378 | sizeof(struct controlvm_message), |
e6bdb904 | 2379 | &local_crash_dev_msg, |
3ab47701 | 2380 | sizeof(struct controlvm_message)) < 0) { |
12e364b9 KC |
2381 | POSTCODE_LINUX_2(CRASH_DEV_RD_DEV_FAIULRE_PC, |
2382 | POSTCODE_SEVERITY_ERR); | |
2383 | return; | |
2384 | } | |
2385 | ||
2386 | /* reuse IOVM create bus message */ | |
ebec8967 | 2387 | if (local_crash_bus_msg.cmd.create_bus.channel_addr) { |
e6bdb904 | 2388 | bus_create(&local_crash_bus_msg); |
75c1f8b7 | 2389 | } else { |
12e364b9 KC |
2390 | POSTCODE_LINUX_2(CRASH_DEV_BUS_NULL_FAILURE_PC, |
2391 | POSTCODE_SEVERITY_ERR); | |
2392 | return; | |
2393 | } | |
2394 | ||
2395 | /* reuse create device message for storage device */ | |
ebec8967 | 2396 | if (local_crash_dev_msg.cmd.create_device.channel_addr) { |
e6bdb904 | 2397 | my_device_create(&local_crash_dev_msg); |
75c1f8b7 | 2398 | } else { |
12e364b9 KC |
2399 | POSTCODE_LINUX_2(CRASH_DEV_DEV_NULL_FAILURE_PC, |
2400 | POSTCODE_SEVERITY_ERR); | |
2401 | return; | |
2402 | } | |
12e364b9 KC |
2403 | POSTCODE_LINUX_2(CRASH_DEV_EXIT_PC, POSTCODE_SEVERITY_INFO); |
2404 | return; | |
2405 | ||
e6bdb904 | 2406 | cleanup: |
12e364b9 | 2407 | |
911e213e | 2408 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW; |
12e364b9 | 2409 | |
9232d2d6 BR |
2410 | queue_delayed_work(periodic_controlvm_workqueue, |
2411 | &periodic_controlvm_work, poll_jiffies); | |
12e364b9 KC |
2412 | } |
2413 | ||
2414 | static void | |
52063eca | 2415 | bus_create_response(u32 bus_no, int response) |
12e364b9 | 2416 | { |
8e3fedd6 | 2417 | bus_responder(CONTROLVM_BUS_CREATE, bus_no, response); |
12e364b9 KC |
2418 | } |
2419 | ||
2420 | static void | |
52063eca | 2421 | bus_destroy_response(u32 bus_no, int response) |
12e364b9 | 2422 | { |
8e3fedd6 | 2423 | bus_responder(CONTROLVM_BUS_DESTROY, bus_no, response); |
12e364b9 KC |
2424 | } |
2425 | ||
2426 | static void | |
52063eca | 2427 | device_create_response(u32 bus_no, u32 dev_no, int response) |
12e364b9 | 2428 | { |
8e3fedd6 | 2429 | device_responder(CONTROLVM_DEVICE_CREATE, bus_no, dev_no, response); |
12e364b9 KC |
2430 | } |
2431 | ||
2432 | static void | |
52063eca | 2433 | device_destroy_response(u32 bus_no, u32 dev_no, int response) |
12e364b9 | 2434 | { |
8e3fedd6 | 2435 | device_responder(CONTROLVM_DEVICE_DESTROY, bus_no, dev_no, response); |
12e364b9 KC |
2436 | } |
2437 | ||
2438 | void | |
52063eca | 2439 | visorchipset_device_pause_response(u32 bus_no, u32 dev_no, int response) |
12e364b9 | 2440 | { |
12e364b9 | 2441 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, |
8420f417 | 2442 | bus_no, dev_no, response, |
bd0d2dcc | 2443 | segment_state_standby); |
12e364b9 | 2444 | } |
927c7927 | 2445 | EXPORT_SYMBOL_GPL(visorchipset_device_pause_response); |
12e364b9 KC |
2446 | |
2447 | static void | |
52063eca | 2448 | device_resume_response(u32 bus_no, u32 dev_no, int response) |
12e364b9 KC |
2449 | { |
2450 | device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE, | |
8e3fedd6 | 2451 | bus_no, dev_no, response, |
bd0d2dcc | 2452 | segment_state_running); |
12e364b9 KC |
2453 | } |
2454 | ||
f4c11551 | 2455 | bool |
52063eca | 2456 | visorchipset_get_bus_info(u32 bus_no, struct visorchipset_bus_info *bus_info) |
12e364b9 | 2457 | { |
4f66520b | 2458 | void *p = bus_find(&bus_info_list, bus_no); |
26eb2c0c | 2459 | |
0aca7844 | 2460 | if (!p) |
f4c11551 | 2461 | return false; |
77db7127 | 2462 | memcpy(bus_info, p, sizeof(struct visorchipset_bus_info)); |
f4c11551 | 2463 | return true; |
12e364b9 KC |
2464 | } |
2465 | EXPORT_SYMBOL_GPL(visorchipset_get_bus_info); | |
2466 | ||
f4c11551 | 2467 | bool |
52063eca | 2468 | visorchipset_set_bus_context(u32 bus_no, void *context) |
12e364b9 | 2469 | { |
4f66520b | 2470 | struct visorchipset_bus_info *p = bus_find(&bus_info_list, bus_no); |
26eb2c0c | 2471 | |
0aca7844 | 2472 | if (!p) |
f4c11551 | 2473 | return false; |
12e364b9 | 2474 | p->bus_driver_context = context; |
f4c11551 | 2475 | return true; |
12e364b9 KC |
2476 | } |
2477 | EXPORT_SYMBOL_GPL(visorchipset_set_bus_context); | |
2478 | ||
f4c11551 | 2479 | bool |
52063eca | 2480 | visorchipset_get_device_info(u32 bus_no, u32 dev_no, |
b486df19 | 2481 | struct visorchipset_device_info *dev_info) |
12e364b9 | 2482 | { |
d480f6a2 | 2483 | void *p = device_find(&dev_info_list, bus_no, dev_no); |
26eb2c0c | 2484 | |
0aca7844 | 2485 | if (!p) |
f4c11551 | 2486 | return false; |
b486df19 | 2487 | memcpy(dev_info, p, sizeof(struct visorchipset_device_info)); |
f4c11551 | 2488 | return true; |
12e364b9 KC |
2489 | } |
2490 | EXPORT_SYMBOL_GPL(visorchipset_get_device_info); | |
2491 | ||
f4c11551 | 2492 | bool |
52063eca | 2493 | visorchipset_set_device_context(u32 bus_no, u32 dev_no, void *context) |
12e364b9 | 2494 | { |
d480f6a2 JS |
2495 | struct visorchipset_device_info *p; |
2496 | ||
2497 | p = device_find(&dev_info_list, bus_no, dev_no); | |
26eb2c0c | 2498 | |
0aca7844 | 2499 | if (!p) |
f4c11551 | 2500 | return false; |
12e364b9 | 2501 | p->bus_driver_context = context; |
f4c11551 | 2502 | return true; |
12e364b9 KC |
2503 | } |
2504 | EXPORT_SYMBOL_GPL(visorchipset_set_device_context); | |
2505 | ||
2506 | /* Generic wrapper function for allocating memory from a kmem_cache pool. | |
2507 | */ | |
2508 | void * | |
f4c11551 | 2509 | visorchipset_cache_alloc(struct kmem_cache *pool, bool ok_to_block, |
12e364b9 KC |
2510 | char *fn, int ln) |
2511 | { | |
2512 | gfp_t gfp; | |
2513 | void *p; | |
2514 | ||
2515 | if (ok_to_block) | |
2516 | gfp = GFP_KERNEL; | |
2517 | else | |
2518 | gfp = GFP_ATOMIC; | |
2519 | /* __GFP_NORETRY means "ok to fail", meaning | |
2520 | * kmem_cache_alloc() can return NULL, implying the caller CAN | |
2521 | * cope with failure. If you do NOT specify __GFP_NORETRY, | |
2522 | * Linux will go to extreme measures to get memory for you | |
2523 | * (like, invoke oom killer), which will probably cripple the | |
2524 | * system. | |
2525 | */ | |
2526 | gfp |= __GFP_NORETRY; | |
2527 | p = kmem_cache_alloc(pool, gfp); | |
0aca7844 | 2528 | if (!p) |
12e364b9 | 2529 | return NULL; |
0aca7844 | 2530 | |
12e364b9 KC |
2531 | return p; |
2532 | } | |
2533 | ||
2534 | /* Generic wrapper function for freeing memory from a kmem_cache pool. | |
2535 | */ | |
2536 | void | |
2537 | visorchipset_cache_free(struct kmem_cache *pool, void *p, char *fn, int ln) | |
2538 | { | |
0aca7844 | 2539 | if (!p) |
12e364b9 | 2540 | return; |
0aca7844 | 2541 | |
12e364b9 KC |
2542 | kmem_cache_free(pool, p); |
2543 | } | |
2544 | ||
18b87ed1 | 2545 | static ssize_t chipsetready_store(struct device *dev, |
8e76e695 BR |
2546 | struct device_attribute *attr, |
2547 | const char *buf, size_t count) | |
12e364b9 | 2548 | { |
18b87ed1 | 2549 | char msgtype[64]; |
12e364b9 | 2550 | |
66e24b76 BR |
2551 | if (sscanf(buf, "%63s", msgtype) != 1) |
2552 | return -EINVAL; | |
2553 | ||
ebec8967 | 2554 | if (!strcmp(msgtype, "CALLHOMEDISK_MOUNTED")) { |
66e24b76 BR |
2555 | chipset_events[0] = 1; |
2556 | return count; | |
ebec8967 | 2557 | } else if (!strcmp(msgtype, "MODULES_LOADED")) { |
66e24b76 BR |
2558 | chipset_events[1] = 1; |
2559 | return count; | |
e22a4a0f BR |
2560 | } |
2561 | return -EINVAL; | |
12e364b9 KC |
2562 | } |
2563 | ||
e56fa7cd BR |
2564 | /* The parahotplug/devicedisabled interface gets called by our support script |
2565 | * when an SR-IOV device has been shut down. The ID is passed to the script | |
2566 | * and then passed back when the device has been removed. | |
2567 | */ | |
2568 | static ssize_t devicedisabled_store(struct device *dev, | |
8e76e695 BR |
2569 | struct device_attribute *attr, |
2570 | const char *buf, size_t count) | |
e56fa7cd | 2571 | { |
94217363 | 2572 | unsigned int id; |
e56fa7cd | 2573 | |
ebec8967 | 2574 | if (kstrtouint(buf, 10, &id)) |
e56fa7cd BR |
2575 | return -EINVAL; |
2576 | ||
2577 | parahotplug_request_complete(id, 0); | |
2578 | return count; | |
2579 | } | |
2580 | ||
2581 | /* The parahotplug/deviceenabled interface gets called by our support script | |
2582 | * when an SR-IOV device has been recovered. The ID is passed to the script | |
2583 | * and then passed back when the device has been brought back up. | |
2584 | */ | |
2585 | static ssize_t deviceenabled_store(struct device *dev, | |
8e76e695 BR |
2586 | struct device_attribute *attr, |
2587 | const char *buf, size_t count) | |
e56fa7cd | 2588 | { |
94217363 | 2589 | unsigned int id; |
e56fa7cd | 2590 | |
ebec8967 | 2591 | if (kstrtouint(buf, 10, &id)) |
e56fa7cd BR |
2592 | return -EINVAL; |
2593 | ||
2594 | parahotplug_request_complete(id, 1); | |
2595 | return count; | |
2596 | } | |
2597 | ||
e3420ed6 EA |
2598 | static int |
2599 | visorchipset_mmap(struct file *file, struct vm_area_struct *vma) | |
2600 | { | |
2601 | unsigned long physaddr = 0; | |
2602 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
2603 | GUEST_PHYSICAL_ADDRESS addr = 0; | |
2604 | ||
2605 | /* sv_enable_dfp(); */ | |
2606 | if (offset & (PAGE_SIZE - 1)) | |
2607 | return -ENXIO; /* need aligned offsets */ | |
2608 | ||
2609 | switch (offset) { | |
2610 | case VISORCHIPSET_MMAP_CONTROLCHANOFFSET: | |
2611 | vma->vm_flags |= VM_IO; | |
2612 | if (!*file_controlvm_channel) | |
2613 | return -ENXIO; | |
2614 | ||
2615 | visorchannel_read(*file_controlvm_channel, | |
2616 | offsetof(struct spar_controlvm_channel_protocol, | |
2617 | gp_control_channel), | |
2618 | &addr, sizeof(addr)); | |
2619 | if (!addr) | |
2620 | return -ENXIO; | |
2621 | ||
2622 | physaddr = (unsigned long)addr; | |
2623 | if (remap_pfn_range(vma, vma->vm_start, | |
2624 | physaddr >> PAGE_SHIFT, | |
2625 | vma->vm_end - vma->vm_start, | |
2626 | /*pgprot_noncached */ | |
2627 | (vma->vm_page_prot))) { | |
2628 | return -EAGAIN; | |
2629 | } | |
2630 | break; | |
2631 | default: | |
2632 | return -ENXIO; | |
2633 | } | |
2634 | return 0; | |
2635 | } | |
2636 | ||
2637 | static long visorchipset_ioctl(struct file *file, unsigned int cmd, | |
2638 | unsigned long arg) | |
2639 | { | |
2640 | s64 adjustment; | |
2641 | s64 vrtc_offset; | |
2642 | ||
2643 | switch (cmd) { | |
2644 | case VMCALL_QUERY_GUEST_VIRTUAL_TIME_OFFSET: | |
2645 | /* get the physical rtc offset */ | |
2646 | vrtc_offset = issue_vmcall_query_guest_virtual_time_offset(); | |
2647 | if (copy_to_user((void __user *)arg, &vrtc_offset, | |
2648 | sizeof(vrtc_offset))) { | |
2649 | return -EFAULT; | |
2650 | } | |
2651 | return SUCCESS; | |
2652 | case VMCALL_UPDATE_PHYSICAL_TIME: | |
2653 | if (copy_from_user(&adjustment, (void __user *)arg, | |
2654 | sizeof(adjustment))) { | |
2655 | return -EFAULT; | |
2656 | } | |
2657 | return issue_vmcall_update_physical_time(adjustment); | |
2658 | default: | |
2659 | return -EFAULT; | |
2660 | } | |
2661 | } | |
2662 | ||
2663 | static const struct file_operations visorchipset_fops = { | |
2664 | .owner = THIS_MODULE, | |
2665 | .open = visorchipset_open, | |
2666 | .read = NULL, | |
2667 | .write = NULL, | |
2668 | .unlocked_ioctl = visorchipset_ioctl, | |
2669 | .release = visorchipset_release, | |
2670 | .mmap = visorchipset_mmap, | |
2671 | }; | |
2672 | ||
2673 | int | |
2674 | visorchipset_file_init(dev_t major_dev, struct visorchannel **controlvm_channel) | |
2675 | { | |
2676 | int rc = 0; | |
2677 | ||
2678 | file_controlvm_channel = controlvm_channel; | |
2679 | cdev_init(&file_cdev, &visorchipset_fops); | |
2680 | file_cdev.owner = THIS_MODULE; | |
2681 | if (MAJOR(major_dev) == 0) { | |
46168810 | 2682 | rc = alloc_chrdev_region(&major_dev, 0, 1, "visorchipset"); |
e3420ed6 EA |
2683 | /* dynamic major device number registration required */ |
2684 | if (rc < 0) | |
2685 | return rc; | |
2686 | } else { | |
2687 | /* static major device number registration required */ | |
46168810 | 2688 | rc = register_chrdev_region(major_dev, 1, "visorchipset"); |
e3420ed6 EA |
2689 | if (rc < 0) |
2690 | return rc; | |
2691 | } | |
2692 | rc = cdev_add(&file_cdev, MKDEV(MAJOR(major_dev), 0), 1); | |
2693 | if (rc < 0) { | |
2694 | unregister_chrdev_region(major_dev, 1); | |
2695 | return rc; | |
2696 | } | |
2697 | return 0; | |
2698 | } | |
2699 | ||
2700 | ||
2701 | ||
12e364b9 KC |
2702 | static int __init |
2703 | visorchipset_init(void) | |
2704 | { | |
2705 | int rc = 0, x = 0; | |
8a1182eb | 2706 | HOSTADDRESS addr; |
12e364b9 | 2707 | |
fcd0157e KC |
2708 | if (!unisys_spar_platform) |
2709 | return -ENODEV; | |
2710 | ||
6fe345af BR |
2711 | memset(&busdev_server_notifiers, 0, sizeof(busdev_server_notifiers)); |
2712 | memset(&busdev_client_notifiers, 0, sizeof(busdev_client_notifiers)); | |
84982fbf | 2713 | memset(&controlvm_payload_info, 0, sizeof(controlvm_payload_info)); |
ea33b4ee BR |
2714 | memset(&livedump_info, 0, sizeof(livedump_info)); |
2715 | atomic_set(&livedump_info.buffers_in_use, 0); | |
12e364b9 | 2716 | |
9f8d0e8b | 2717 | if (visorchipset_testvnic) { |
9f8d0e8b KC |
2718 | POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, x, DIAG_SEVERITY_ERR); |
2719 | rc = x; | |
a6a3989b | 2720 | goto cleanup; |
9f8d0e8b | 2721 | } |
12e364b9 | 2722 | |
8a1182eb | 2723 | addr = controlvm_get_channel_address(); |
ebec8967 | 2724 | if (addr) { |
c3d9a224 | 2725 | controlvm_channel = |
8a1182eb BR |
2726 | visorchannel_create_with_lock |
2727 | (addr, | |
d19642f6 | 2728 | sizeof(struct spar_controlvm_channel_protocol), |
5fbaa4b3 | 2729 | spar_controlvm_channel_protocol_uuid); |
93a84565 | 2730 | if (SPAR_CONTROLVM_CHANNEL_OK_CLIENT( |
c3d9a224 | 2731 | visorchannel_get_header(controlvm_channel))) { |
8a1182eb BR |
2732 | initialize_controlvm_payload(); |
2733 | } else { | |
c3d9a224 BR |
2734 | visorchannel_destroy(controlvm_channel); |
2735 | controlvm_channel = NULL; | |
8a1182eb BR |
2736 | return -ENODEV; |
2737 | } | |
2738 | } else { | |
8a1182eb BR |
2739 | return -ENODEV; |
2740 | } | |
2741 | ||
5aa8ae57 BR |
2742 | major_dev = MKDEV(visorchipset_major, 0); |
2743 | rc = visorchipset_file_init(major_dev, &controlvm_channel); | |
4cb005a9 | 2744 | if (rc < 0) { |
4cb005a9 | 2745 | POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC, DIAG_SEVERITY_ERR); |
a6a3989b | 2746 | goto cleanup; |
4cb005a9 | 2747 | } |
9f8d0e8b | 2748 | |
da021f02 | 2749 | memset(&g_chipset_msg_hdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2750 | |
2098dbd1 | 2751 | if (!visorchipset_disable_controlvm) { |
12e364b9 | 2752 | /* if booting in a crash kernel */ |
1ba00980 | 2753 | if (is_kdump_kernel()) |
9232d2d6 | 2754 | INIT_DELAYED_WORK(&periodic_controlvm_work, |
12e364b9 KC |
2755 | setup_crash_devices_work_queue); |
2756 | else | |
9232d2d6 | 2757 | INIT_DELAYED_WORK(&periodic_controlvm_work, |
12e364b9 | 2758 | controlvm_periodic_work); |
9232d2d6 | 2759 | periodic_controlvm_workqueue = |
12e364b9 KC |
2760 | create_singlethread_workqueue("visorchipset_controlvm"); |
2761 | ||
38f736e9 | 2762 | if (!periodic_controlvm_workqueue) { |
4cb005a9 KC |
2763 | POSTCODE_LINUX_2(CREATE_WORKQUEUE_FAILED_PC, |
2764 | DIAG_SEVERITY_ERR); | |
2765 | rc = -ENOMEM; | |
a6a3989b | 2766 | goto cleanup; |
4cb005a9 | 2767 | } |
b53e0e93 | 2768 | most_recent_message_jiffies = jiffies; |
911e213e | 2769 | poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST; |
9232d2d6 BR |
2770 | rc = queue_delayed_work(periodic_controlvm_workqueue, |
2771 | &periodic_controlvm_work, poll_jiffies); | |
4cb005a9 | 2772 | if (rc < 0) { |
4cb005a9 KC |
2773 | POSTCODE_LINUX_2(QUEUE_DELAYED_WORK_PC, |
2774 | DIAG_SEVERITY_ERR); | |
a6a3989b | 2775 | goto cleanup; |
4cb005a9 | 2776 | } |
12e364b9 KC |
2777 | } |
2778 | ||
eb34e877 BR |
2779 | visorchipset_platform_device.dev.devt = major_dev; |
2780 | if (platform_device_register(&visorchipset_platform_device) < 0) { | |
4cb005a9 KC |
2781 | POSTCODE_LINUX_2(DEVICE_REGISTER_FAILURE_PC, DIAG_SEVERITY_ERR); |
2782 | rc = -1; | |
a6a3989b | 2783 | goto cleanup; |
4cb005a9 | 2784 | } |
12e364b9 | 2785 | POSTCODE_LINUX_2(CHIPSET_INIT_SUCCESS_PC, POSTCODE_SEVERITY_INFO); |
c79b28f7 PB |
2786 | |
2787 | rc = visorbus_init(); | |
a6a3989b | 2788 | cleanup: |
12e364b9 | 2789 | if (rc) { |
12e364b9 KC |
2790 | POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, rc, |
2791 | POSTCODE_SEVERITY_ERR); | |
2792 | } | |
2793 | return rc; | |
2794 | } | |
2795 | ||
e3420ed6 EA |
2796 | void |
2797 | visorchipset_file_cleanup(dev_t major_dev) | |
2798 | { | |
2799 | if (file_cdev.ops) | |
2800 | cdev_del(&file_cdev); | |
2801 | file_cdev.ops = NULL; | |
2802 | unregister_chrdev_region(major_dev, 1); | |
2803 | } | |
2804 | ||
12e364b9 KC |
2805 | static void |
2806 | visorchipset_exit(void) | |
2807 | { | |
12e364b9 KC |
2808 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); |
2809 | ||
c79b28f7 PB |
2810 | visorbus_exit(); |
2811 | ||
12e364b9 KC |
2812 | if (visorchipset_disable_controlvm) { |
2813 | ; | |
2814 | } else { | |
9232d2d6 BR |
2815 | cancel_delayed_work(&periodic_controlvm_work); |
2816 | flush_workqueue(periodic_controlvm_workqueue); | |
2817 | destroy_workqueue(periodic_controlvm_workqueue); | |
2818 | periodic_controlvm_workqueue = NULL; | |
84982fbf | 2819 | destroy_controlvm_payload_info(&controlvm_payload_info); |
12e364b9 | 2820 | } |
1783319f | 2821 | |
12e364b9 KC |
2822 | cleanup_controlvm_structures(); |
2823 | ||
da021f02 | 2824 | memset(&g_chipset_msg_hdr, 0, sizeof(struct controlvm_message_header)); |
12e364b9 | 2825 | |
c3d9a224 | 2826 | visorchannel_destroy(controlvm_channel); |
8a1182eb | 2827 | |
addceb12 | 2828 | visorchipset_file_cleanup(visorchipset_platform_device.dev.devt); |
12e364b9 | 2829 | POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO); |
12e364b9 KC |
2830 | } |
2831 | ||
2832 | module_param_named(testvnic, visorchipset_testvnic, int, S_IRUGO); | |
2833 | MODULE_PARM_DESC(visorchipset_testvnic, "1 to test vnic, using dummy VNIC connected via a loopback to a physical ethernet"); | |
12e364b9 KC |
2834 | module_param_named(testvnicclient, visorchipset_testvnicclient, int, S_IRUGO); |
2835 | MODULE_PARM_DESC(visorchipset_testvnicclient, "1 to test vnic, using real VNIC channel attached to a separate IOVM guest"); | |
12e364b9 KC |
2836 | module_param_named(testmsg, visorchipset_testmsg, int, S_IRUGO); |
2837 | MODULE_PARM_DESC(visorchipset_testmsg, | |
2838 | "1 to manufacture the chipset, bus, and switch messages"); | |
12e364b9 | 2839 | module_param_named(major, visorchipset_major, int, S_IRUGO); |
b615d628 JS |
2840 | MODULE_PARM_DESC(visorchipset_major, |
2841 | "major device number to use for the device node"); | |
12e364b9 KC |
2842 | module_param_named(serverregwait, visorchipset_serverregwait, int, S_IRUGO); |
2843 | MODULE_PARM_DESC(visorchipset_serverreqwait, | |
2844 | "1 to have the module wait for the visor bus to register"); | |
12e364b9 KC |
2845 | module_param_named(clientregwait, visorchipset_clientregwait, int, S_IRUGO); |
2846 | MODULE_PARM_DESC(visorchipset_clientregwait, "1 to have the module wait for the visorclientbus to register"); | |
12e364b9 KC |
2847 | module_param_named(testteardown, visorchipset_testteardown, int, S_IRUGO); |
2848 | MODULE_PARM_DESC(visorchipset_testteardown, | |
2849 | "1 to test teardown of the chipset, bus, and switch"); | |
12e364b9 KC |
2850 | module_param_named(disable_controlvm, visorchipset_disable_controlvm, int, |
2851 | S_IRUGO); | |
2852 | MODULE_PARM_DESC(visorchipset_disable_controlvm, | |
2853 | "1 to disable polling of controlVm channel"); | |
12e364b9 KC |
2854 | module_param_named(holdchipsetready, visorchipset_holdchipsetready, |
2855 | int, S_IRUGO); | |
2856 | MODULE_PARM_DESC(visorchipset_holdchipsetready, | |
2857 | "1 to hold response to CHIPSET_READY"); | |
b615d628 | 2858 | |
12e364b9 KC |
2859 | module_init(visorchipset_init); |
2860 | module_exit(visorchipset_exit); | |
2861 | ||
2862 | MODULE_AUTHOR("Unisys"); | |
2863 | MODULE_LICENSE("GPL"); | |
2864 | MODULE_DESCRIPTION("Supervisor chipset driver for service partition: ver " | |
2865 | VERSION); | |
2866 | MODULE_VERSION(VERSION); |