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