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