3 * Copyright � 2010 - 2013 UNISYS CORPORATION
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.
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
19 #include "controlvm.h"
20 #include "visorchipset.h"
21 #include "procobjecttree.h"
22 #include "visorchannel.h"
23 #include "periodic_work.h"
29 #include "guidutils.h"
30 #include "controlvmcompletionstatus.h"
31 #include "guestlinuxdebug.h"
34 #include <linux/nls.h>
35 #include <linux/netdevice.h>
36 #include <linux/platform_device.h>
38 #define CURRENT_FILE_PC VISOR_CHIPSET_PC_visorchipset_main_c
39 #define TEST_VNIC_PHYSITF "eth0" /* physical network itf for
40 * vnic loopback test */
41 #define TEST_VNIC_SWITCHNO 1
42 #define TEST_VNIC_BUSNO 9
44 #define MAX_NAME_SIZE 128
45 #define MAX_IP_SIZE 50
46 #define MAXOUTSTANDINGCHANNELCOMMAND 256
47 #define POLLJIFFIES_CONTROLVMCHANNEL_FAST 1
48 #define POLLJIFFIES_CONTROLVMCHANNEL_SLOW 100
50 /* When the controlvm channel is idle for at least MIN_IDLE_SECONDS,
51 * we switch to slow polling mode. As soon as we get a controlvm
52 * message, we switch back to fast polling mode.
54 #define MIN_IDLE_SECONDS 10
55 static ulong Poll_jiffies
= POLLJIFFIES_CONTROLVMCHANNEL_FAST
;
56 static ulong Most_recent_message_jiffies
; /* when we got our last
57 * controlvm message */
67 static int serverregistered
;
68 static int clientregistered
;
70 #define MAX_CHIPSET_EVENTS 2
71 static U8 chipset_events
[MAX_CHIPSET_EVENTS
] = { 0, 0 };
73 static struct delayed_work Periodic_controlvm_work
;
74 static struct workqueue_struct
*Periodic_controlvm_workqueue
;
75 static DEFINE_SEMAPHORE(NotifierLock
);
78 CONTROLVM_MESSAGE message
;
82 static CONTROLVM_MESSAGE_HEADER g_DiagMsgHdr
;
83 static CONTROLVM_MESSAGE_HEADER g_ChipSetMsgHdr
;
84 static CONTROLVM_MESSAGE_HEADER g_DelDumpMsgHdr
;
85 static const GUID UltraDiagPoolChannelProtocolGuid
=
86 ULTRA_DIAG_POOL_CHANNEL_PROTOCOL_GUID
;
87 /* 0xffffff is an invalid Bus/Device number */
88 static ulong g_diagpoolBusNo
= 0xffffff;
89 static ulong g_diagpoolDevNo
= 0xffffff;
90 static CONTROLVM_MESSAGE_PACKET g_DeviceChangeStatePacket
;
92 /* Only VNIC and VHBA channels are sent to visorclientbus (aka
95 #define FOR_VISORHACKBUS(channel_type_guid) \
96 ((memcmp(&channel_type_guid, &UltraVnicChannelProtocolGuid, \
97 sizeof(GUID)) == 0) || \
98 (memcmp(&channel_type_guid, &UltraVhbaChannelProtocolGuid, \
100 #define FOR_VISORBUS(channel_type_guid) (!(FOR_VISORHACKBUS(channel_type_guid)))
102 #define is_diagpool_channel(channel_type_guid) \
103 (memcmp(&channel_type_guid, \
104 &UltraDiagPoolChannelProtocolGuid, sizeof(GUID)) == 0)
109 PARTPROP_description
,
112 /* add new properties above, but don't forget to change
113 * InitPartitionProperties() and show_partition_property() also...
116 } PARTITION_property
;
117 static const char *PartitionTypeNames
[] = { "partition", NULL
};
119 static char *PartitionPropertyNames
[PARTPROP_last
+ 1];
121 InitPartitionProperties(void)
123 char **p
= PartitionPropertyNames
;
124 p
[PARTPROP_invalid
] = "";
125 p
[PARTPROP_name
] = "name";
126 p
[PARTPROP_description
] = "description";
127 p
[PARTPROP_handle
] = "handle";
128 p
[PARTPROP_busNumber
] = "busNumber";
129 p
[PARTPROP_last
] = NULL
;
135 CTLVMPROP_controlChannelAddr
,
136 CTLVMPROP_controlChannelBytes
,
137 CTLVMPROP_sparBootPart
,
138 CTLVMPROP_sparStoragePart
,
139 CTLVMPROP_livedumpLength
,
140 CTLVMPROP_livedumpCrc32
,
141 /* add new properties above, but don't forget to change
142 * InitControlVmProperties() show_controlvm_property() also...
145 } CONTROLVM_property
;
147 static const char *ControlVmTypeNames
[] = { "controlvm", NULL
};
149 static char *ControlVmPropertyNames
[CTLVMPROP_last
+ 1];
151 InitControlVmProperties(void)
153 char **p
= ControlVmPropertyNames
;
154 p
[CTLVMPROP_invalid
] = "";
155 p
[CTLVMPROP_physAddr
] = "physAddr";
156 p
[CTLVMPROP_controlChannelAddr
] = "controlChannelAddr";
157 p
[CTLVMPROP_controlChannelBytes
] = "controlChannelBytes";
158 p
[CTLVMPROP_sparBootPart
] = "spar_boot_part";
159 p
[CTLVMPROP_sparStoragePart
] = "spar_storage_part";
160 p
[CTLVMPROP_livedumpLength
] = "livedumpLength";
161 p
[CTLVMPROP_livedumpCrc32
] = "livedumpCrc32";
162 p
[CTLVMPROP_last
] = NULL
;
165 static MYPROCOBJECT
*ControlVmObject
;
166 static MYPROCTYPE
*PartitionType
;
167 static MYPROCTYPE
*ControlVmType
;
169 #define VISORCHIPSET_DIAG_PROC_ENTRY_FN "diagdump"
170 static struct proc_dir_entry
*diag_proc_dir
;
172 #define VISORCHIPSET_CHIPSET_PROC_ENTRY_FN "chipsetready"
173 static struct proc_dir_entry
*chipset_proc_dir
;
175 #define VISORCHIPSET_PARAHOTPLUG_PROC_ENTRY_FN "parahotplug"
176 static struct proc_dir_entry
*parahotplug_proc_dir
;
178 static LIST_HEAD(BusInfoList
);
179 static LIST_HEAD(DevInfoList
);
181 static struct proc_dir_entry
*ProcDir
;
182 static VISORCHANNEL
*ControlVm_channel
;
184 static ssize_t
visorchipset_proc_read_writeonly(struct file
*file
,
186 size_t len
, loff_t
*offset
);
187 static ssize_t
proc_read_installer(struct file
*file
, char __user
*buf
,
188 size_t len
, loff_t
*offset
);
189 static ssize_t
proc_write_installer(struct file
*file
,
190 const char __user
*buffer
,
191 size_t count
, loff_t
*ppos
);
192 static ssize_t
proc_read_toolaction(struct file
*file
, char __user
*buf
,
193 size_t len
, loff_t
*offset
);
194 static ssize_t
proc_write_toolaction(struct file
*file
,
195 const char __user
*buffer
,
196 size_t count
, loff_t
*ppos
);
197 static ssize_t
proc_read_bootToTool(struct file
*file
, char __user
*buf
,
198 size_t len
, loff_t
*offset
);
199 static ssize_t
proc_write_bootToTool(struct file
*file
,
200 const char __user
*buffer
,
201 size_t count
, loff_t
*ppos
);
202 static const struct file_operations proc_installer_fops
= {
203 .read
= proc_read_installer
,
204 .write
= proc_write_installer
,
207 static const struct file_operations proc_toolaction_fops
= {
208 .read
= proc_read_toolaction
,
209 .write
= proc_write_toolaction
,
212 static const struct file_operations proc_bootToTool_fops
= {
213 .read
= proc_read_bootToTool
,
214 .write
= proc_write_bootToTool
,
218 U8 __iomem
*ptr
; /* pointer to base address of payload pool */
219 U64 offset
; /* offset from beginning of controlvm
220 * channel to beginning of payload * pool */
221 U32 bytes
; /* number of bytes in payload pool */
222 } CONTROLVM_PAYLOAD_INFO
;
224 /* Manages the request payload in the controlvm channel */
225 static CONTROLVM_PAYLOAD_INFO ControlVm_payload_info
;
227 static pCHANNEL_HEADER Test_Vnic_channel
;
230 CONTROLVM_MESSAGE_HEADER Dumpcapture_header
;
231 CONTROLVM_MESSAGE_HEADER Gettextdump_header
;
232 CONTROLVM_MESSAGE_HEADER Dumpcomplete_header
;
233 BOOL Gettextdump_outstanding
;
236 atomic_t buffers_in_use
;
239 /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE /
240 * CONTROLVM_DUMP_GETTEXTDUMP / CONTROLVM_DUMP_COMPLETE conversation.
242 static LIVEDUMP_INFO LiveDump_info
;
244 /* The following globals are used to handle the scenario where we are unable to
245 * offload the payload from a controlvm message due to memory requirements. In
246 * this scenario, we simply stash the controlvm message, then attempt to
247 * process it again the next time controlvm_periodic_work() runs.
249 static CONTROLVM_MESSAGE ControlVm_Pending_Msg
;
250 static BOOL ControlVm_Pending_Msg_Valid
= FALSE
;
252 /* Pool of struct putfile_buffer_entry, for keeping track of pending (incoming)
253 * TRANSMIT_FILE PutFile payloads.
255 static struct kmem_cache
*Putfile_buffer_list_pool
;
256 static const char Putfile_buffer_list_pool_name
[] =
257 "controlvm_putfile_buffer_list_pool";
259 /* This identifies a data buffer that has been received via a controlvm messages
260 * in a remote --> local CONTROLVM_TRANSMIT_FILE conversation.
262 struct putfile_buffer_entry
{
263 struct list_head next
; /* putfile_buffer_entry list */
264 PARSER_CONTEXT
*parser_ctx
; /* points to buffer containing input data */
267 /* List of struct putfile_request *, via next_putfile_request member.
268 * Each entry in this list identifies an outstanding TRANSMIT_FILE
271 static LIST_HEAD(Putfile_request_list
);
273 /* This describes a buffer and its current state of transfer (e.g., how many
274 * bytes have already been supplied as putfile data, and how many bytes are
275 * remaining) for a putfile_request.
277 struct putfile_active_buffer
{
278 /* a payload from a controlvm message, containing a file data buffer */
279 PARSER_CONTEXT
*parser_ctx
;
280 /* points within data area of parser_ctx to next byte of data */
282 /* # bytes left from <pnext> to the end of this data buffer */
283 size_t bytes_remaining
;
286 #define PUTFILE_REQUEST_SIG 0x0906101302281211
287 /* This identifies a single remote --> local CONTROLVM_TRANSMIT_FILE
288 * conversation. Structs of this type are dynamically linked into
289 * <Putfile_request_list>.
291 struct putfile_request
{
292 u64 sig
; /* PUTFILE_REQUEST_SIG */
294 /* header from original TransmitFile request */
295 CONTROLVM_MESSAGE_HEADER controlvm_header
;
296 u64 file_request_number
; /* from original TransmitFile request */
298 /* link to next struct putfile_request */
299 struct list_head next_putfile_request
;
301 /* most-recent sequence number supplied via a controlvm message */
302 u64 data_sequence_number
;
304 /* head of putfile_buffer_entry list, which describes the data to be
305 * supplied as putfile data;
306 * - this list is added to when controlvm messages come in that supply
308 * - this list is removed from via the hotplug program that is actually
309 * consuming these buffers to write as file data */
310 struct list_head input_buffer_list
;
311 spinlock_t req_list_lock
; /* lock for input_buffer_list */
313 /* waiters for input_buffer_list to go non-empty */
314 wait_queue_head_t input_buffer_wq
;
316 /* data not yet read within current putfile_buffer_entry */
317 struct putfile_active_buffer active_buf
;
319 /* <0 = failed, 0 = in-progress, >0 = successful; */
320 /* note that this must be set with req_list_lock, and if you set <0, */
321 /* it is your responsibility to also free up all of the other objects */
322 /* in this struct (like input_buffer_list, active_buf.parser_ctx) */
323 /* before releasing the lock */
324 int completion_status
;
327 static atomic_t Visorchipset_cache_buffers_in_use
= ATOMIC_INIT(0);
329 struct parahotplug_request
{
330 struct list_head list
;
332 unsigned long expiration
;
333 CONTROLVM_MESSAGE msg
;
336 static LIST_HEAD(Parahotplug_request_list
);
337 static DEFINE_SPINLOCK(Parahotplug_request_list_lock
); /* lock for above */
338 static void parahotplug_process_list(void);
340 /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE /
341 * CONTROLVM_REPORTEVENT.
343 static VISORCHIPSET_BUSDEV_NOTIFIERS BusDev_Server_Notifiers
;
344 static VISORCHIPSET_BUSDEV_NOTIFIERS BusDev_Client_Notifiers
;
346 static void bus_create_response(ulong busNo
, int response
);
347 static void bus_destroy_response(ulong busNo
, int response
);
348 static void device_create_response(ulong busNo
, ulong devNo
, int response
);
349 static void device_destroy_response(ulong busNo
, ulong devNo
, int response
);
350 static void device_resume_response(ulong busNo
, ulong devNo
, int response
);
352 static VISORCHIPSET_BUSDEV_RESPONDERS BusDev_Responders
= {
353 .bus_create
= bus_create_response
,
354 .bus_destroy
= bus_destroy_response
,
355 .device_create
= device_create_response
,
356 .device_destroy
= device_destroy_response
,
357 .device_pause
= visorchipset_device_pause_response
,
358 .device_resume
= device_resume_response
,
361 /* info for /dev/visorchipset */
362 static dev_t MajorDev
= -1; /**< indicates major num for device */
364 /* /sys/devices/platform/visorchipset */
365 static struct platform_device Visorchipset_platform_device
= {
366 .name
= "visorchipset",
370 /* Function prototypes */
371 static void controlvm_respond(CONTROLVM_MESSAGE_HEADER
*msgHdr
, int response
);
372 static void controlvm_respond_chipset_init(CONTROLVM_MESSAGE_HEADER
*msgHdr
,
374 ULTRA_CHIPSET_FEATURE features
);
375 static void controlvm_respond_physdev_changestate(CONTROLVM_MESSAGE_HEADER
*
376 msgHdr
, int response
,
377 ULTRA_SEGMENT_STATE state
);
380 show_partition_property(struct seq_file
*f
, void *ctx
, int property
)
382 VISORCHIPSET_BUS_INFO
*info
= (VISORCHIPSET_BUS_INFO
*) (ctx
);
386 seq_printf(f
, "%s\n", NONULLSTR(info
->name
));
388 case PARTPROP_description
:
389 seq_printf(f
, "%s\n", NONULLSTR(info
->description
));
391 case PARTPROP_handle
:
392 seq_printf(f
, "0x%-16.16Lx\n", info
->partitionHandle
);
394 case PARTPROP_busNumber
:
395 seq_printf(f
, "%d\n", info
->busNo
);
398 seq_printf(f
, "(%d??)\n", property
);
404 show_controlvm_property(struct seq_file
*f
, void *ctx
, int property
)
406 /* Note: ctx is not needed since we only have 1 controlvm channel */
408 case CTLVMPROP_physAddr
:
409 if (ControlVm_channel
== NULL
)
410 seq_puts(f
, "0x0\n");
412 seq_printf(f
, "0x%-16.16Lx\n",
413 visorchannel_get_physaddr
414 (ControlVm_channel
));
416 case CTLVMPROP_controlChannelAddr
:
417 if (ControlVm_channel
== NULL
)
418 seq_puts(f
, "0x0\n");
420 GUEST_PHYSICAL_ADDRESS addr
= 0;
421 visorchannel_read(ControlVm_channel
,
423 (ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
424 gpControlChannel
), &addr
,
426 seq_printf(f
, "0x%-16.16Lx\n", (u64
) (addr
));
429 case CTLVMPROP_controlChannelBytes
:
430 if (ControlVm_channel
== NULL
)
431 seq_puts(f
, "0x0\n");
434 visorchannel_read(ControlVm_channel
,
436 (ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
437 ControlChannelBytes
), &bytes
,
439 seq_printf(f
, "%lu\n", (ulong
) (bytes
));
442 case CTLVMPROP_sparBootPart
:
443 seq_puts(f
, "0:0:0:0/1\n");
445 case CTLVMPROP_sparStoragePart
:
446 seq_puts(f
, "0:0:0:0/2\n");
448 case CTLVMPROP_livedumpLength
:
449 seq_printf(f
, "%lu\n", LiveDump_info
.length
);
451 case CTLVMPROP_livedumpCrc32
:
452 seq_printf(f
, "%lu\n", (ulong
) LiveDump_info
.crc32
);
455 seq_printf(f
, "(%d??)\n", property
);
463 if (ProcDir
== NULL
) {
464 ProcDir
= proc_mkdir(MYDRVNAME
, NULL
);
465 if (ProcDir
== NULL
) {
466 LOGERR("failed to create /proc directory %s",
468 POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC
,
469 POSTCODE_SEVERITY_ERR
);
478 remove_proc_entry(MYDRVNAME
, NULL
);
486 wchar_t unicodeString
[] = { 'a', 'b', 'c', 0 };
487 char s
[sizeof(unicodeString
) * NLS_MAX_CHARSET_SIZE
];
488 wchar_t unicode2
[99];
490 /* NOTE: Either due to a bug, or feature I don't understand, the
491 * kernel utf8_mbstowcs() and utf_wcstombs() do NOT copy the
492 * trailed NUL byte!! REALLY!!!!! Arrrrgggghhhhh
495 LOGINF("sizeof(wchar_t) = %d", sizeof(wchar_t));
496 LOGINF("utf8_wcstombs=%d",
497 chrs
= utf8_wcstombs(s
, unicodeString
, sizeof(s
)));
499 s
[chrs
] = '\0'; /* GRRRRRRRR */
501 LOGINF("utf8_mbstowcs=%d", chrs
= utf8_mbstowcs(unicode2
, s
, 100));
503 unicode2
[chrs
] = 0; /* GRRRRRRRR */
504 if (memcmp(unicodeString
, unicode2
, sizeof(unicodeString
)) == 0)
505 LOGINF("strings match... good");
507 LOGINF("strings did not match!!");
512 busInfo_clear(void *v
)
514 VISORCHIPSET_BUS_INFO
*p
= (VISORCHIPSET_BUS_INFO
*) (v
);
517 visor_proc_DestroyObject(p
->procObject
);
518 p
->procObject
= NULL
;
523 kfree(p
->description
);
524 p
->description
= NULL
;
526 p
->state
.created
= 0;
527 memset(p
, 0, sizeof(VISORCHIPSET_BUS_INFO
));
531 devInfo_clear(void *v
)
533 VISORCHIPSET_DEVICE_INFO
*p
= (VISORCHIPSET_DEVICE_INFO
*) (v
);
534 p
->state
.created
= 0;
535 memset(p
, 0, sizeof(VISORCHIPSET_DEVICE_INFO
));
539 check_chipset_events(void)
543 /* Check events to determine if response should be sent */
544 for (i
= 0; i
< MAX_CHIPSET_EVENTS
; i
++)
545 send_msg
&= chipset_events
[i
];
550 clear_chipset_events(void)
553 /* Clear chipset_events */
554 for (i
= 0; i
< MAX_CHIPSET_EVENTS
; i
++)
555 chipset_events
[i
] = 0;
559 visorchipset_register_busdev_server(VISORCHIPSET_BUSDEV_NOTIFIERS
*notifiers
,
560 VISORCHIPSET_BUSDEV_RESPONDERS
*responders
,
561 ULTRA_VBUS_DEVICEINFO
*driverInfo
)
563 LOCKSEM_UNINTERRUPTIBLE(&NotifierLock
);
564 if (notifiers
== NULL
) {
565 memset(&BusDev_Server_Notifiers
, 0,
566 sizeof(BusDev_Server_Notifiers
));
567 serverregistered
= 0; /* clear flag */
569 BusDev_Server_Notifiers
= *notifiers
;
570 serverregistered
= 1; /* set flag */
573 *responders
= BusDev_Responders
;
575 BusDeviceInfo_Init(driverInfo
, "chipset", "visorchipset",
576 VERSION
, NULL
, __DATE__
, __TIME__
);
578 UNLOCKSEM(&NotifierLock
);
580 EXPORT_SYMBOL_GPL(visorchipset_register_busdev_server
);
583 visorchipset_register_busdev_client(VISORCHIPSET_BUSDEV_NOTIFIERS
*notifiers
,
584 VISORCHIPSET_BUSDEV_RESPONDERS
*responders
,
585 ULTRA_VBUS_DEVICEINFO
*driverInfo
)
587 LOCKSEM_UNINTERRUPTIBLE(&NotifierLock
);
588 if (notifiers
== NULL
) {
589 memset(&BusDev_Client_Notifiers
, 0,
590 sizeof(BusDev_Client_Notifiers
));
591 clientregistered
= 0; /* clear flag */
593 BusDev_Client_Notifiers
= *notifiers
;
594 clientregistered
= 1; /* set flag */
597 *responders
= BusDev_Responders
;
599 BusDeviceInfo_Init(driverInfo
, "chipset(bolts)", "visorchipset",
600 VERSION
, NULL
, __DATE__
, __TIME__
);
601 UNLOCKSEM(&NotifierLock
);
603 EXPORT_SYMBOL_GPL(visorchipset_register_busdev_client
);
606 cleanup_controlvm_structures(void)
608 VISORCHIPSET_BUS_INFO
*bi
;
609 VISORCHIPSET_DEVICE_INFO
*di
;
611 list_for_each_entry(bi
, &BusInfoList
, entry
) {
613 list_del(&bi
->entry
);
617 list_for_each_entry(di
, &DevInfoList
, entry
) {
619 list_del(&di
->entry
);
625 chipset_init(CONTROLVM_MESSAGE
*inmsg
)
627 static int chipset_inited
;
628 ULTRA_CHIPSET_FEATURE features
= 0;
629 int rc
= CONTROLVM_RESP_SUCCESS
;
631 POSTCODE_LINUX_2(CHIPSET_INIT_ENTRY_PC
, POSTCODE_SEVERITY_INFO
);
632 if (chipset_inited
) {
633 LOGERR("CONTROLVM_CHIPSET_INIT Failed: Already Done.");
634 rc
= -CONTROLVM_RESP_ERROR_ALREADY_DONE
;
638 POSTCODE_LINUX_2(CHIPSET_INIT_EXIT_PC
, POSTCODE_SEVERITY_INFO
);
640 /* Set features to indicate we support parahotplug (if Command
641 * also supports it). */
643 inmsg
->cmd
.initChipset
.
644 features
& ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG
;
646 /* Set the "reply" bit so Command knows this is a
647 * features-aware driver. */
648 features
|= ULTRA_CHIPSET_FEATURE_REPLY
;
652 cleanup_controlvm_structures();
653 if (inmsg
->hdr
.Flags
.responseExpected
)
654 controlvm_respond_chipset_init(&inmsg
->hdr
, rc
, features
);
658 controlvm_init_response(CONTROLVM_MESSAGE
*msg
,
659 CONTROLVM_MESSAGE_HEADER
*msgHdr
, int response
)
661 memset(msg
, 0, sizeof(CONTROLVM_MESSAGE
));
662 memcpy(&msg
->hdr
, msgHdr
, sizeof(CONTROLVM_MESSAGE_HEADER
));
663 msg
->hdr
.PayloadBytes
= 0;
664 msg
->hdr
.PayloadVmOffset
= 0;
665 msg
->hdr
.PayloadMaxBytes
= 0;
667 msg
->hdr
.Flags
.failed
= 1;
668 msg
->hdr
.CompletionStatus
= (U32
) (-response
);
673 controlvm_respond(CONTROLVM_MESSAGE_HEADER
*msgHdr
, int response
)
675 CONTROLVM_MESSAGE outmsg
;
676 if (!ControlVm_channel
)
678 controlvm_init_response(&outmsg
, msgHdr
, response
);
679 /* For DiagPool channel DEVICE_CHANGESTATE, we need to send
680 * back the deviceChangeState structure in the packet. */
681 if (msgHdr
->Id
== CONTROLVM_DEVICE_CHANGESTATE
682 && g_DeviceChangeStatePacket
.deviceChangeState
.busNo
==
684 && g_DeviceChangeStatePacket
.deviceChangeState
.devNo
==
686 outmsg
.cmd
= g_DeviceChangeStatePacket
;
687 if (outmsg
.hdr
.Flags
.testMessage
== 1) {
688 LOGINF("%s controlvm_msg=0x%x response=%d for test message",
689 __func__
, outmsg
.hdr
.Id
, response
);
692 if (!visorchannel_signalinsert(ControlVm_channel
,
693 CONTROLVM_QUEUE_REQUEST
, &outmsg
)) {
694 LOGERR("signalinsert failed!");
700 controlvm_respond_chipset_init(CONTROLVM_MESSAGE_HEADER
*msgHdr
, int response
,
701 ULTRA_CHIPSET_FEATURE features
)
703 CONTROLVM_MESSAGE outmsg
;
704 if (!ControlVm_channel
)
706 controlvm_init_response(&outmsg
, msgHdr
, response
);
707 outmsg
.cmd
.initChipset
.features
= features
;
708 if (!visorchannel_signalinsert(ControlVm_channel
,
709 CONTROLVM_QUEUE_REQUEST
, &outmsg
)) {
710 LOGERR("signalinsert failed!");
716 controlvm_respond_physdev_changestate(CONTROLVM_MESSAGE_HEADER
*msgHdr
,
717 int response
, ULTRA_SEGMENT_STATE state
)
719 CONTROLVM_MESSAGE outmsg
;
720 if (!ControlVm_channel
)
722 controlvm_init_response(&outmsg
, msgHdr
, response
);
723 outmsg
.cmd
.deviceChangeState
.state
= state
;
724 outmsg
.cmd
.deviceChangeState
.flags
.physicalDevice
= 1;
725 if (!visorchannel_signalinsert(ControlVm_channel
,
726 CONTROLVM_QUEUE_REQUEST
, &outmsg
)) {
727 LOGERR("signalinsert failed!");
733 visorchipset_save_message(CONTROLVM_MESSAGE
*msg
, CRASH_OBJ_TYPE type
)
735 U32 localSavedCrashMsgOffset
;
736 U16 localSavedCrashMsgCount
;
738 /* get saved message count */
739 if (visorchannel_read(ControlVm_channel
,
740 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
742 &localSavedCrashMsgCount
, sizeof(U16
)) < 0) {
743 LOGERR("failed to get Saved Message Count");
744 POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC
,
745 POSTCODE_SEVERITY_ERR
);
749 if (localSavedCrashMsgCount
!= CONTROLVM_CRASHMSG_MAX
) {
750 LOGERR("Saved Message Count incorrect %d",
751 localSavedCrashMsgCount
);
752 POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC
,
753 localSavedCrashMsgCount
,
754 POSTCODE_SEVERITY_ERR
);
758 /* get saved crash message offset */
759 if (visorchannel_read(ControlVm_channel
,
760 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
761 SavedCrashMsgOffset
),
762 &localSavedCrashMsgOffset
, sizeof(U32
)) < 0) {
763 LOGERR("failed to get Saved Message Offset");
764 POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC
,
765 POSTCODE_SEVERITY_ERR
);
769 if (type
== CRASH_bus
) {
770 if (visorchannel_write(ControlVm_channel
,
771 localSavedCrashMsgOffset
,
772 msg
, sizeof(CONTROLVM_MESSAGE
)) < 0) {
773 LOGERR("SAVE_MSG_BUS_FAILURE: Failed to write CrashCreateBusMsg!");
774 POSTCODE_LINUX_2(SAVE_MSG_BUS_FAILURE_PC
,
775 POSTCODE_SEVERITY_ERR
);
779 if (visorchannel_write(ControlVm_channel
,
780 localSavedCrashMsgOffset
+
781 sizeof(CONTROLVM_MESSAGE
), msg
,
782 sizeof(CONTROLVM_MESSAGE
)) < 0) {
783 LOGERR("SAVE_MSG_DEV_FAILURE: Failed to write CrashCreateDevMsg!");
784 POSTCODE_LINUX_2(SAVE_MSG_DEV_FAILURE_PC
,
785 POSTCODE_SEVERITY_ERR
);
790 EXPORT_SYMBOL_GPL(visorchipset_save_message
);
793 bus_responder(CONTROLVM_ID cmdId
, ulong busNo
, int response
)
795 VISORCHIPSET_BUS_INFO
*p
= NULL
;
796 BOOL need_clear
= FALSE
;
798 p
= findbus(&BusInfoList
, busNo
);
800 LOGERR("internal error busNo=%lu", busNo
);
804 if ((cmdId
== CONTROLVM_BUS_CREATE
) &&
805 (response
!= (-CONTROLVM_RESP_ERROR_ALREADY_DONE
)))
806 /* undo the row we just created... */
807 delbusdevices(&DevInfoList
, busNo
);
809 if (cmdId
== CONTROLVM_BUS_CREATE
)
810 p
->state
.created
= 1;
811 if (cmdId
== CONTROLVM_BUS_DESTROY
)
815 if (p
->pendingMsgHdr
.Id
== CONTROLVM_INVALID
) {
816 LOGERR("bus_responder no pending msg");
817 return; /* no controlvm response needed */
819 if (p
->pendingMsgHdr
.Id
!= (U32
) cmdId
) {
820 LOGERR("expected=%d, found=%d", cmdId
, p
->pendingMsgHdr
.Id
);
823 controlvm_respond(&p
->pendingMsgHdr
, response
);
824 p
->pendingMsgHdr
.Id
= CONTROLVM_INVALID
;
827 delbusdevices(&DevInfoList
, busNo
);
832 device_changestate_responder(CONTROLVM_ID cmdId
,
833 ulong busNo
, ulong devNo
, int response
,
834 ULTRA_SEGMENT_STATE responseState
)
836 VISORCHIPSET_DEVICE_INFO
*p
= NULL
;
837 CONTROLVM_MESSAGE outmsg
;
839 if (!ControlVm_channel
)
842 p
= finddevice(&DevInfoList
, busNo
, devNo
);
844 LOGERR("internal error; busNo=%lu, devNo=%lu", busNo
, devNo
);
847 if (p
->pendingMsgHdr
.Id
== CONTROLVM_INVALID
) {
848 LOGERR("device_responder no pending msg");
849 return; /* no controlvm response needed */
851 if (p
->pendingMsgHdr
.Id
!= cmdId
) {
852 LOGERR("expected=%d, found=%d", cmdId
, p
->pendingMsgHdr
.Id
);
856 controlvm_init_response(&outmsg
, &p
->pendingMsgHdr
, response
);
858 outmsg
.cmd
.deviceChangeState
.busNo
= busNo
;
859 outmsg
.cmd
.deviceChangeState
.devNo
= devNo
;
860 outmsg
.cmd
.deviceChangeState
.state
= responseState
;
862 if (!visorchannel_signalinsert(ControlVm_channel
,
863 CONTROLVM_QUEUE_REQUEST
, &outmsg
)) {
864 LOGERR("signalinsert failed!");
868 p
->pendingMsgHdr
.Id
= CONTROLVM_INVALID
;
872 device_responder(CONTROLVM_ID cmdId
, ulong busNo
, ulong devNo
, int response
)
874 VISORCHIPSET_DEVICE_INFO
*p
= NULL
;
875 BOOL need_clear
= FALSE
;
877 p
= finddevice(&DevInfoList
, busNo
, devNo
);
879 LOGERR("internal error; busNo=%lu, devNo=%lu", busNo
, devNo
);
883 if (cmdId
== CONTROLVM_DEVICE_CREATE
)
884 p
->state
.created
= 1;
885 if (cmdId
== CONTROLVM_DEVICE_DESTROY
)
889 if (p
->pendingMsgHdr
.Id
== CONTROLVM_INVALID
) {
890 LOGERR("device_responder no pending msg");
891 return; /* no controlvm response needed */
893 if (p
->pendingMsgHdr
.Id
!= (U32
) cmdId
) {
894 LOGERR("expected=%d, found=%d", cmdId
, p
->pendingMsgHdr
.Id
);
897 controlvm_respond(&p
->pendingMsgHdr
, response
);
898 p
->pendingMsgHdr
.Id
= CONTROLVM_INVALID
;
904 bus_epilog(U32 busNo
,
905 U32 cmd
, CONTROLVM_MESSAGE_HEADER
*msgHdr
,
906 int response
, BOOL needResponse
)
908 BOOL notified
= FALSE
;
910 VISORCHIPSET_BUS_INFO
*pBusInfo
= findbus(&BusInfoList
, busNo
);
913 LOGERR("HUH? bad busNo=%d", busNo
);
917 memcpy(&pBusInfo
->pendingMsgHdr
, msgHdr
,
918 sizeof(CONTROLVM_MESSAGE_HEADER
));
920 pBusInfo
->pendingMsgHdr
.Id
= CONTROLVM_INVALID
;
922 LOCKSEM_UNINTERRUPTIBLE(&NotifierLock
);
923 if (response
== CONTROLVM_RESP_SUCCESS
) {
925 case CONTROLVM_BUS_CREATE
:
926 /* We can't tell from the bus_create
927 * information which of our 2 bus flavors the
928 * devices on this bus will ultimately end up.
929 * FORTUNATELY, it turns out it is harmless to
930 * send the bus_create to both of them. We can
931 * narrow things down a little bit, though,
932 * because we know: - BusDev_Server can handle
933 * either server or client devices
934 * - BusDev_Client can handle ONLY client
936 if (BusDev_Server_Notifiers
.bus_create
) {
937 (*BusDev_Server_Notifiers
.bus_create
) (busNo
);
940 if ((!pBusInfo
->flags
.server
) /*client */ &&
941 BusDev_Client_Notifiers
.bus_create
) {
942 (*BusDev_Client_Notifiers
.bus_create
) (busNo
);
946 case CONTROLVM_BUS_DESTROY
:
947 if (BusDev_Server_Notifiers
.bus_destroy
) {
948 (*BusDev_Server_Notifiers
.bus_destroy
) (busNo
);
951 if ((!pBusInfo
->flags
.server
) /*client */ &&
952 BusDev_Client_Notifiers
.bus_destroy
) {
953 (*BusDev_Client_Notifiers
.bus_destroy
) (busNo
);
960 /* The callback function just called above is responsible
961 * for calling the appropriate VISORCHIPSET_BUSDEV_RESPONDERS
962 * function, which will call bus_responder()
966 bus_responder(cmd
, busNo
, response
);
967 UNLOCKSEM(&NotifierLock
);
971 device_epilog(U32 busNo
, U32 devNo
, ULTRA_SEGMENT_STATE state
, U32 cmd
,
972 CONTROLVM_MESSAGE_HEADER
*msgHdr
, int response
,
973 BOOL needResponse
, BOOL for_visorbus
)
975 VISORCHIPSET_BUSDEV_NOTIFIERS
*notifiers
= NULL
;
976 BOOL notified
= FALSE
;
978 VISORCHIPSET_DEVICE_INFO
*pDevInfo
=
979 finddevice(&DevInfoList
, busNo
, devNo
);
981 "SPARSP_DIAGPOOL_PAUSED_STATE = 1",
986 LOGERR("HUH? bad busNo=%d, devNo=%d", busNo
, devNo
);
990 notifiers
= &BusDev_Server_Notifiers
;
992 notifiers
= &BusDev_Client_Notifiers
;
994 memcpy(&pDevInfo
->pendingMsgHdr
, msgHdr
,
995 sizeof(CONTROLVM_MESSAGE_HEADER
));
997 pDevInfo
->pendingMsgHdr
.Id
= CONTROLVM_INVALID
;
999 LOCKSEM_UNINTERRUPTIBLE(&NotifierLock
);
1000 if (response
>= 0) {
1002 case CONTROLVM_DEVICE_CREATE
:
1003 if (notifiers
->device_create
) {
1004 (*notifiers
->device_create
) (busNo
, devNo
);
1008 case CONTROLVM_DEVICE_CHANGESTATE
:
1009 /* ServerReady / ServerRunning / SegmentStateRunning */
1010 if (state
.Alive
== SegmentStateRunning
.Alive
&&
1011 state
.Operating
== SegmentStateRunning
.Operating
) {
1012 if (notifiers
->device_resume
) {
1013 (*notifiers
->device_resume
) (busNo
,
1018 /* ServerNotReady / ServerLost / SegmentStateStandby */
1019 else if (state
.Alive
== SegmentStateStandby
.Alive
&&
1021 SegmentStateStandby
.Operating
) {
1022 /* technically this is standby case
1023 * where server is lost
1025 if (notifiers
->device_pause
) {
1026 (*notifiers
->device_pause
) (busNo
,
1030 } else if (state
.Alive
== SegmentStatePaused
.Alive
&&
1032 SegmentStatePaused
.Operating
) {
1033 /* this is lite pause where channel is
1034 * still valid just 'pause' of it
1036 if (busNo
== g_diagpoolBusNo
1037 && devNo
== g_diagpoolDevNo
) {
1038 LOGINF("DEVICE_CHANGESTATE(DiagpoolChannel busNo=%d devNo=%d is pausing...)",
1040 /* this will trigger the
1041 * diag_shutdown.sh script in
1042 * the visorchipset hotplug */
1044 (&Visorchipset_platform_device
.dev
.
1045 kobj
, KOBJ_ONLINE
, envp
);
1049 case CONTROLVM_DEVICE_DESTROY
:
1050 if (notifiers
->device_destroy
) {
1051 (*notifiers
->device_destroy
) (busNo
, devNo
);
1058 /* The callback function just called above is responsible
1059 * for calling the appropriate VISORCHIPSET_BUSDEV_RESPONDERS
1060 * function, which will call device_responder()
1064 device_responder(cmd
, busNo
, devNo
, response
);
1065 UNLOCKSEM(&NotifierLock
);
1069 bus_create(CONTROLVM_MESSAGE
*inmsg
)
1071 CONTROLVM_MESSAGE_PACKET
*cmd
= &inmsg
->cmd
;
1072 ulong busNo
= cmd
->createBus
.busNo
;
1073 int rc
= CONTROLVM_RESP_SUCCESS
;
1074 VISORCHIPSET_BUS_INFO
*pBusInfo
= NULL
;
1077 pBusInfo
= findbus(&BusInfoList
, busNo
);
1078 if (pBusInfo
&& (pBusInfo
->state
.created
== 1)) {
1079 LOGERR("CONTROLVM_BUS_CREATE Failed: bus %lu already exists",
1081 POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC
, busNo
,
1082 POSTCODE_SEVERITY_ERR
);
1083 rc
= -CONTROLVM_RESP_ERROR_ALREADY_DONE
;
1086 pBusInfo
= kzalloc(sizeof(VISORCHIPSET_BUS_INFO
), GFP_KERNEL
);
1087 if (pBusInfo
== NULL
) {
1088 LOGERR("CONTROLVM_BUS_CREATE Failed: bus %lu kzalloc failed",
1090 POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC
, busNo
,
1091 POSTCODE_SEVERITY_ERR
);
1092 rc
= -CONTROLVM_RESP_ERROR_KMALLOC_FAILED
;
1096 INIT_LIST_HEAD(&pBusInfo
->entry
);
1097 pBusInfo
->busNo
= busNo
;
1098 pBusInfo
->devNo
= cmd
->createBus
.deviceCount
;
1100 POSTCODE_LINUX_3(BUS_CREATE_ENTRY_PC
, busNo
, POSTCODE_SEVERITY_INFO
);
1102 if (inmsg
->hdr
.Flags
.testMessage
== 1)
1103 pBusInfo
->chanInfo
.addrType
= ADDRTYPE_localTest
;
1105 pBusInfo
->chanInfo
.addrType
= ADDRTYPE_localPhysical
;
1107 pBusInfo
->flags
.server
= inmsg
->hdr
.Flags
.server
;
1108 pBusInfo
->chanInfo
.channelAddr
= cmd
->createBus
.channelAddr
;
1109 pBusInfo
->chanInfo
.nChannelBytes
= cmd
->createBus
.channelBytes
;
1110 pBusInfo
->chanInfo
.channelTypeGuid
= cmd
->createBus
.busDataTypeGuid
;
1111 pBusInfo
->chanInfo
.channelInstGuid
= cmd
->createBus
.busInstGuid
;
1113 list_add(&pBusInfo
->entry
, &BusInfoList
);
1115 POSTCODE_LINUX_3(BUS_CREATE_EXIT_PC
, busNo
, POSTCODE_SEVERITY_INFO
);
1118 bus_epilog(busNo
, CONTROLVM_BUS_CREATE
, &inmsg
->hdr
,
1119 rc
, inmsg
->hdr
.Flags
.responseExpected
== 1);
1123 bus_destroy(CONTROLVM_MESSAGE
*inmsg
)
1125 CONTROLVM_MESSAGE_PACKET
*cmd
= &inmsg
->cmd
;
1126 ulong busNo
= cmd
->destroyBus
.busNo
;
1127 VISORCHIPSET_BUS_INFO
*pBusInfo
;
1128 int rc
= CONTROLVM_RESP_SUCCESS
;
1130 pBusInfo
= findbus(&BusInfoList
, busNo
);
1132 LOGERR("CONTROLVM_BUS_DESTROY Failed: bus %lu invalid", busNo
);
1133 rc
= -CONTROLVM_RESP_ERROR_BUS_INVALID
;
1136 if (pBusInfo
->state
.created
== 0) {
1137 LOGERR("CONTROLVM_BUS_DESTROY Failed: bus %lu already destroyed",
1139 rc
= -CONTROLVM_RESP_ERROR_ALREADY_DONE
;
1144 bus_epilog(busNo
, CONTROLVM_BUS_DESTROY
, &inmsg
->hdr
,
1145 rc
, inmsg
->hdr
.Flags
.responseExpected
== 1);
1149 bus_configure(CONTROLVM_MESSAGE
*inmsg
, PARSER_CONTEXT
*parser_ctx
)
1151 CONTROLVM_MESSAGE_PACKET
*cmd
= &inmsg
->cmd
;
1152 ulong busNo
= cmd
->configureBus
.busNo
;
1153 VISORCHIPSET_BUS_INFO
*pBusInfo
= NULL
;
1154 int rc
= CONTROLVM_RESP_SUCCESS
;
1157 busNo
= cmd
->configureBus
.busNo
;
1158 POSTCODE_LINUX_3(BUS_CONFIGURE_ENTRY_PC
, busNo
, POSTCODE_SEVERITY_INFO
);
1160 pBusInfo
= findbus(&BusInfoList
, busNo
);
1162 LOGERR("CONTROLVM_BUS_CONFIGURE Failed: bus %lu invalid",
1164 POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC
, busNo
,
1165 POSTCODE_SEVERITY_ERR
);
1166 rc
= -CONTROLVM_RESP_ERROR_BUS_INVALID
;
1169 if (pBusInfo
->state
.created
== 0) {
1170 LOGERR("CONTROLVM_BUS_CONFIGURE Failed: Invalid bus %lu - not created yet",
1172 POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC
, busNo
,
1173 POSTCODE_SEVERITY_ERR
);
1174 rc
= -CONTROLVM_RESP_ERROR_BUS_INVALID
;
1177 /* TBD - add this check to other commands also... */
1178 if (pBusInfo
->pendingMsgHdr
.Id
!= CONTROLVM_INVALID
) {
1179 LOGERR("CONTROLVM_BUS_CONFIGURE Failed: bus %lu MsgId=%u outstanding",
1180 busNo
, (uint
) pBusInfo
->pendingMsgHdr
.Id
);
1181 POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC
, busNo
,
1182 POSTCODE_SEVERITY_ERR
);
1183 rc
= -CONTROLVM_RESP_ERROR_MESSAGE_ID_INVALID_FOR_CLIENT
;
1187 pBusInfo
->partitionHandle
= cmd
->configureBus
.guestHandle
;
1188 pBusInfo
->partitionGuid
= parser_id_get(parser_ctx
);
1189 parser_param_start(parser_ctx
, PARSERSTRING_NAME
);
1190 pBusInfo
->name
= parser_string_get(parser_ctx
);
1192 visorchannel_GUID_id(&pBusInfo
->partitionGuid
, s
);
1193 pBusInfo
->procObject
=
1194 visor_proc_CreateObject(PartitionType
, s
, (void *) (pBusInfo
));
1195 if (pBusInfo
->procObject
== NULL
) {
1196 LOGERR("CONTROLVM_BUS_CONFIGURE Failed: busNo=%lu failed to create /proc entry",
1198 POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC
, busNo
,
1199 POSTCODE_SEVERITY_ERR
);
1200 rc
= -CONTROLVM_RESP_ERROR_KMALLOC_FAILED
;
1203 POSTCODE_LINUX_3(BUS_CONFIGURE_EXIT_PC
, busNo
, POSTCODE_SEVERITY_INFO
);
1205 bus_epilog(busNo
, CONTROLVM_BUS_CONFIGURE
, &inmsg
->hdr
,
1206 rc
, inmsg
->hdr
.Flags
.responseExpected
== 1);
1210 my_device_create(CONTROLVM_MESSAGE
*inmsg
)
1212 CONTROLVM_MESSAGE_PACKET
*cmd
= &inmsg
->cmd
;
1213 ulong busNo
= cmd
->createDevice
.busNo
;
1214 ulong devNo
= cmd
->createDevice
.devNo
;
1215 VISORCHIPSET_DEVICE_INFO
*pDevInfo
= NULL
;
1216 VISORCHIPSET_BUS_INFO
*pBusInfo
= NULL
;
1217 int rc
= CONTROLVM_RESP_SUCCESS
;
1219 pDevInfo
= finddevice(&DevInfoList
, busNo
, devNo
);
1220 if (pDevInfo
&& (pDevInfo
->state
.created
== 1)) {
1221 LOGERR("CONTROLVM_DEVICE_CREATE Failed: busNo=%lu, devNo=%lu already exists",
1223 POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC
, devNo
, busNo
,
1224 POSTCODE_SEVERITY_ERR
);
1225 rc
= -CONTROLVM_RESP_ERROR_ALREADY_DONE
;
1228 pBusInfo
= findbus(&BusInfoList
, busNo
);
1230 LOGERR("CONTROLVM_DEVICE_CREATE Failed: Invalid bus %lu - out of range",
1232 POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC
, devNo
, busNo
,
1233 POSTCODE_SEVERITY_ERR
);
1234 rc
= -CONTROLVM_RESP_ERROR_BUS_INVALID
;
1237 if (pBusInfo
->state
.created
== 0) {
1238 LOGERR("CONTROLVM_DEVICE_CREATE Failed: Invalid bus %lu - not created yet",
1240 POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC
, devNo
, busNo
,
1241 POSTCODE_SEVERITY_ERR
);
1242 rc
= -CONTROLVM_RESP_ERROR_BUS_INVALID
;
1245 pDevInfo
= kzalloc(sizeof(VISORCHIPSET_DEVICE_INFO
), GFP_KERNEL
);
1246 if (pDevInfo
== NULL
) {
1247 LOGERR("CONTROLVM_DEVICE_CREATE Failed: busNo=%lu, devNo=%lu kmaloc failed",
1249 POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC
, devNo
, busNo
,
1250 POSTCODE_SEVERITY_ERR
);
1251 rc
= -CONTROLVM_RESP_ERROR_KMALLOC_FAILED
;
1255 INIT_LIST_HEAD(&pDevInfo
->entry
);
1256 pDevInfo
->busNo
= busNo
;
1257 pDevInfo
->devNo
= devNo
;
1258 pDevInfo
->devInstGuid
= cmd
->createDevice
.devInstGuid
;
1259 POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC
, devNo
, busNo
,
1260 POSTCODE_SEVERITY_INFO
);
1262 if (inmsg
->hdr
.Flags
.testMessage
== 1)
1263 pDevInfo
->chanInfo
.addrType
= ADDRTYPE_localTest
;
1265 pDevInfo
->chanInfo
.addrType
= ADDRTYPE_localPhysical
;
1266 pDevInfo
->chanInfo
.channelAddr
= cmd
->createDevice
.channelAddr
;
1267 pDevInfo
->chanInfo
.nChannelBytes
= cmd
->createDevice
.channelBytes
;
1268 pDevInfo
->chanInfo
.channelTypeGuid
= cmd
->createDevice
.dataTypeGuid
;
1269 pDevInfo
->chanInfo
.intr
= cmd
->createDevice
.intr
;
1270 list_add(&pDevInfo
->entry
, &DevInfoList
);
1271 POSTCODE_LINUX_4(DEVICE_CREATE_EXIT_PC
, devNo
, busNo
,
1272 POSTCODE_SEVERITY_INFO
);
1274 /* get the bus and devNo for DiagPool channel */
1275 if (is_diagpool_channel(pDevInfo
->chanInfo
.channelTypeGuid
)) {
1276 g_diagpoolBusNo
= busNo
;
1277 g_diagpoolDevNo
= devNo
;
1278 LOGINF("CONTROLVM_DEVICE_CREATE for DiagPool channel: busNo=%lu, devNo=%lu",
1279 g_diagpoolBusNo
, g_diagpoolDevNo
);
1281 device_epilog(busNo
, devNo
, SegmentStateRunning
,
1282 CONTROLVM_DEVICE_CREATE
, &inmsg
->hdr
, rc
,
1283 inmsg
->hdr
.Flags
.responseExpected
== 1,
1284 FOR_VISORBUS(pDevInfo
->chanInfo
.channelTypeGuid
));
1288 my_device_changestate(CONTROLVM_MESSAGE
*inmsg
)
1290 CONTROLVM_MESSAGE_PACKET
*cmd
= &inmsg
->cmd
;
1291 ulong busNo
= cmd
->deviceChangeState
.busNo
;
1292 ulong devNo
= cmd
->deviceChangeState
.devNo
;
1293 ULTRA_SEGMENT_STATE state
= cmd
->deviceChangeState
.state
;
1294 VISORCHIPSET_DEVICE_INFO
*pDevInfo
= NULL
;
1295 int rc
= CONTROLVM_RESP_SUCCESS
;
1297 pDevInfo
= finddevice(&DevInfoList
, busNo
, devNo
);
1299 LOGERR("CONTROLVM_DEVICE_CHANGESTATE Failed: busNo=%lu, devNo=%lu invalid (doesn't exist)",
1301 POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC
, devNo
, busNo
,
1302 POSTCODE_SEVERITY_ERR
);
1303 rc
= -CONTROLVM_RESP_ERROR_DEVICE_INVALID
;
1306 if (pDevInfo
->state
.created
== 0) {
1307 LOGERR("CONTROLVM_DEVICE_CHANGESTATE Failed: busNo=%lu, devNo=%lu invalid (not created)",
1309 POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC
, devNo
, busNo
,
1310 POSTCODE_SEVERITY_ERR
);
1311 rc
= -CONTROLVM_RESP_ERROR_DEVICE_INVALID
;
1314 if ((rc
>= CONTROLVM_RESP_SUCCESS
) && pDevInfo
)
1315 device_epilog(busNo
, devNo
, state
, CONTROLVM_DEVICE_CHANGESTATE
,
1317 inmsg
->hdr
.Flags
.responseExpected
== 1,
1318 FOR_VISORBUS(pDevInfo
->chanInfo
.channelTypeGuid
));
1322 my_device_destroy(CONTROLVM_MESSAGE
*inmsg
)
1324 CONTROLVM_MESSAGE_PACKET
*cmd
= &inmsg
->cmd
;
1325 ulong busNo
= cmd
->destroyDevice
.busNo
;
1326 ulong devNo
= cmd
->destroyDevice
.devNo
;
1327 VISORCHIPSET_DEVICE_INFO
*pDevInfo
= NULL
;
1328 int rc
= CONTROLVM_RESP_SUCCESS
;
1330 pDevInfo
= finddevice(&DevInfoList
, busNo
, devNo
);
1332 LOGERR("CONTROLVM_DEVICE_DESTROY Failed: busNo=%lu, devNo=%lu invalid",
1334 rc
= -CONTROLVM_RESP_ERROR_DEVICE_INVALID
;
1337 if (pDevInfo
->state
.created
== 0) {
1338 LOGERR("CONTROLVM_DEVICE_DESTROY Failed: busNo=%lu, devNo=%lu already destroyed",
1340 rc
= -CONTROLVM_RESP_ERROR_ALREADY_DONE
;
1344 if ((rc
>= CONTROLVM_RESP_SUCCESS
) && pDevInfo
)
1345 device_epilog(busNo
, devNo
, SegmentStateRunning
,
1346 CONTROLVM_DEVICE_DESTROY
, &inmsg
->hdr
, rc
,
1347 inmsg
->hdr
.Flags
.responseExpected
== 1,
1348 FOR_VISORBUS(pDevInfo
->chanInfo
.channelTypeGuid
));
1351 /* When provided with the physical address of the controlvm channel
1352 * (phys_addr), the offset to the payload area we need to manage
1353 * (offset), and the size of this payload area (bytes), fills in the
1354 * CONTROLVM_PAYLOAD_INFO struct. Returns TRUE for success or FALSE
1358 initialize_controlvm_payload_info(HOSTADDRESS phys_addr
, U64 offset
, U32 bytes
,
1359 CONTROLVM_PAYLOAD_INFO
*info
)
1361 U8 __iomem
*payload
= NULL
;
1362 int rc
= CONTROLVM_RESP_SUCCESS
;
1365 LOGERR("HUH ? CONTROLVM_PAYLOAD_INIT Failed : Programmer check at %s:%d",
1366 __FILE__
, __LINE__
);
1367 rc
= -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID
;
1370 memset(info
, 0, sizeof(CONTROLVM_PAYLOAD_INFO
));
1371 if ((offset
== 0) || (bytes
== 0)) {
1372 LOGERR("CONTROLVM_PAYLOAD_INIT Failed: RequestPayloadOffset=%llu RequestPayloadBytes=%llu!",
1373 (u64
) offset
, (u64
) bytes
);
1374 rc
= -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID
;
1377 payload
= ioremap_cache(phys_addr
+ offset
, bytes
);
1378 if (payload
== NULL
) {
1379 LOGERR("CONTROLVM_PAYLOAD_INIT Failed: ioremap_cache %llu for %llu bytes failed",
1380 (u64
) offset
, (u64
) bytes
);
1381 rc
= -CONTROLVM_RESP_ERROR_IOREMAP_FAILED
;
1385 info
->offset
= offset
;
1386 info
->bytes
= bytes
;
1387 info
->ptr
= payload
;
1388 LOGINF("offset=%llu, bytes=%lu, ptr=%p",
1389 (u64
) (info
->offset
), (ulong
) (info
->bytes
), info
->ptr
);
1393 if (payload
!= NULL
) {
1402 destroy_controlvm_payload_info(CONTROLVM_PAYLOAD_INFO
*info
)
1404 if (info
->ptr
!= NULL
) {
1408 memset(info
, 0, sizeof(CONTROLVM_PAYLOAD_INFO
));
1412 initialize_controlvm_payload(void)
1414 HOSTADDRESS phys_addr
= visorchannel_get_physaddr(ControlVm_channel
);
1415 U64 payloadOffset
= 0;
1416 U32 payloadBytes
= 0;
1417 if (visorchannel_read(ControlVm_channel
,
1418 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
1419 RequestPayloadOffset
),
1420 &payloadOffset
, sizeof(payloadOffset
)) < 0) {
1421 LOGERR("CONTROLVM_PAYLOAD_INIT Failed to read controlvm channel!");
1422 POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC
,
1423 POSTCODE_SEVERITY_ERR
);
1426 if (visorchannel_read(ControlVm_channel
,
1427 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
1428 RequestPayloadBytes
),
1429 &payloadBytes
, sizeof(payloadBytes
)) < 0) {
1430 LOGERR("CONTROLVM_PAYLOAD_INIT Failed to read controlvm channel!");
1431 POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC
,
1432 POSTCODE_SEVERITY_ERR
);
1435 initialize_controlvm_payload_info(phys_addr
,
1436 payloadOffset
, payloadBytes
,
1437 &ControlVm_payload_info
);
1440 /* Send ACTION=online for DEVPATH=/sys/devices/platform/visorchipset.
1441 * Returns CONTROLVM_RESP_xxx code.
1444 visorchipset_chipset_ready(void)
1446 kobject_uevent(&Visorchipset_platform_device
.dev
.kobj
, KOBJ_ONLINE
);
1447 return CONTROLVM_RESP_SUCCESS
;
1449 EXPORT_SYMBOL_GPL(visorchipset_chipset_ready
);
1452 visorchipset_chipset_selftest(void)
1454 char env_selftest
[20];
1455 char *envp
[] = { env_selftest
, NULL
};
1456 sprintf(env_selftest
, "SPARSP_SELFTEST=%d", 1);
1457 kobject_uevent_env(&Visorchipset_platform_device
.dev
.kobj
, KOBJ_CHANGE
,
1459 return CONTROLVM_RESP_SUCCESS
;
1461 EXPORT_SYMBOL_GPL(visorchipset_chipset_selftest
);
1463 /* Send ACTION=offline for DEVPATH=/sys/devices/platform/visorchipset.
1464 * Returns CONTROLVM_RESP_xxx code.
1467 visorchipset_chipset_notready(void)
1469 kobject_uevent(&Visorchipset_platform_device
.dev
.kobj
, KOBJ_OFFLINE
);
1470 return CONTROLVM_RESP_SUCCESS
;
1472 EXPORT_SYMBOL_GPL(visorchipset_chipset_notready
);
1475 chipset_ready(CONTROLVM_MESSAGE_HEADER
*msgHdr
)
1477 int rc
= visorchipset_chipset_ready();
1478 if (rc
!= CONTROLVM_RESP_SUCCESS
)
1480 if (msgHdr
->Flags
.responseExpected
&& !visorchipset_holdchipsetready
)
1481 controlvm_respond(msgHdr
, rc
);
1482 if (msgHdr
->Flags
.responseExpected
&& visorchipset_holdchipsetready
) {
1483 /* Send CHIPSET_READY response when all modules have been loaded
1484 * and disks mounted for the partition
1486 g_ChipSetMsgHdr
= *msgHdr
;
1487 LOGINF("Holding CHIPSET_READY response");
1492 chipset_selftest(CONTROLVM_MESSAGE_HEADER
*msgHdr
)
1494 int rc
= visorchipset_chipset_selftest();
1495 if (rc
!= CONTROLVM_RESP_SUCCESS
)
1497 if (msgHdr
->Flags
.responseExpected
)
1498 controlvm_respond(msgHdr
, rc
);
1502 chipset_notready(CONTROLVM_MESSAGE_HEADER
*msgHdr
)
1504 int rc
= visorchipset_chipset_notready();
1505 if (rc
!= CONTROLVM_RESP_SUCCESS
)
1507 if (msgHdr
->Flags
.responseExpected
)
1508 controlvm_respond(msgHdr
, rc
);
1511 /* This is your "one-stop" shop for grabbing the next message from the
1512 * CONTROLVM_QUEUE_EVENT queue in the controlvm channel.
1515 read_controlvm_event(CONTROLVM_MESSAGE
*msg
)
1517 if (visorchannel_signalremove(ControlVm_channel
,
1518 CONTROLVM_QUEUE_EVENT
, msg
)) {
1520 if (msg
->hdr
.Flags
.testMessage
== 1) {
1521 LOGERR("ignoring bad CONTROLVM_QUEUE_EVENT msg with controlvm_msg_id=0x%x because Flags.testMessage is nonsensical (=1)", msg
->hdr
.Id
);
1530 * The general parahotplug flow works as follows. The visorchipset
1531 * driver receives a DEVICE_CHANGESTATE message from Command
1532 * specifying a physical device to enable or disable. The CONTROLVM
1533 * message handler calls parahotplug_process_message, which then adds
1534 * the message to a global list and kicks off a udev event which
1535 * causes a user level script to enable or disable the specified
1536 * device. The udev script then writes to
1537 * /proc/visorchipset/parahotplug, which causes parahotplug_proc_write
1538 * to get called, at which point the appropriate CONTROLVM message is
1539 * retrieved from the list and responded to.
1542 #define PARAHOTPLUG_TIMEOUT_MS 2000
1545 * Generate unique int to match an outstanding CONTROLVM message with a
1546 * udev script /proc response
1549 parahotplug_next_id(void)
1551 static atomic_t id
= ATOMIC_INIT(0);
1552 return atomic_inc_return(&id
);
1556 * Returns the time (in jiffies) when a CONTROLVM message on the list
1557 * should expire -- PARAHOTPLUG_TIMEOUT_MS in the future
1559 static unsigned long
1560 parahotplug_next_expiration(void)
1562 return jiffies
+ PARAHOTPLUG_TIMEOUT_MS
* HZ
/ 1000;
1566 * Create a parahotplug_request, which is basically a wrapper for a
1567 * CONTROLVM_MESSAGE that we can stick on a list
1569 static struct parahotplug_request
*
1570 parahotplug_request_create(CONTROLVM_MESSAGE
*msg
)
1572 struct parahotplug_request
*req
=
1573 kmalloc(sizeof(struct parahotplug_request
),
1574 GFP_KERNEL
|__GFP_NORETRY
);
1578 req
->id
= parahotplug_next_id();
1579 req
->expiration
= parahotplug_next_expiration();
1586 * Free a parahotplug_request.
1589 parahotplug_request_destroy(struct parahotplug_request
*req
)
1595 * Cause uevent to run the user level script to do the disable/enable
1596 * specified in (the CONTROLVM message in) the specified
1597 * parahotplug_request
1600 parahotplug_request_kickoff(struct parahotplug_request
*req
)
1602 CONTROLVM_MESSAGE_PACKET
*cmd
= &req
->msg
.cmd
;
1603 char env_cmd
[40], env_id
[40], env_state
[40], env_bus
[40], env_dev
[40],
1606 env_cmd
, env_id
, env_state
, env_bus
, env_dev
, env_func
, NULL
1609 sprintf(env_cmd
, "SPAR_PARAHOTPLUG=1");
1610 sprintf(env_id
, "SPAR_PARAHOTPLUG_ID=%d", req
->id
);
1611 sprintf(env_state
, "SPAR_PARAHOTPLUG_STATE=%d",
1612 cmd
->deviceChangeState
.state
.Active
);
1613 sprintf(env_bus
, "SPAR_PARAHOTPLUG_BUS=%d",
1614 cmd
->deviceChangeState
.busNo
);
1615 sprintf(env_dev
, "SPAR_PARAHOTPLUG_DEVICE=%d",
1616 cmd
->deviceChangeState
.devNo
>> 3);
1617 sprintf(env_func
, "SPAR_PARAHOTPLUG_FUNCTION=%d",
1618 cmd
->deviceChangeState
.devNo
& 0x7);
1620 LOGINF("parahotplug_request_kickoff: state=%d, bdf=%d/%d/%d, id=%u\n",
1621 cmd
->deviceChangeState
.state
.Active
,
1622 cmd
->deviceChangeState
.busNo
, cmd
->deviceChangeState
.devNo
>> 3,
1623 cmd
->deviceChangeState
.devNo
& 7, req
->id
);
1625 kobject_uevent_env(&Visorchipset_platform_device
.dev
.kobj
, KOBJ_CHANGE
,
1630 * Remove any request from the list that's been on there too long and
1631 * respond with an error.
1634 parahotplug_process_list(void)
1636 struct list_head
*pos
= NULL
;
1637 struct list_head
*tmp
= NULL
;
1639 spin_lock(&Parahotplug_request_list_lock
);
1641 list_for_each_safe(pos
, tmp
, &Parahotplug_request_list
) {
1642 struct parahotplug_request
*req
=
1643 list_entry(pos
, struct parahotplug_request
, list
);
1644 if (time_after_eq(jiffies
, req
->expiration
)) {
1646 if (req
->msg
.hdr
.Flags
.responseExpected
)
1647 controlvm_respond_physdev_changestate(
1649 CONTROLVM_RESP_ERROR_DEVICE_UDEV_TIMEOUT
,
1650 req
->msg
.cmd
.deviceChangeState
.state
);
1651 parahotplug_request_destroy(req
);
1655 spin_unlock(&Parahotplug_request_list_lock
);
1659 * Called from the /proc handler, which means the user script has
1660 * finished the enable/disable. Find the matching identifier, and
1661 * respond to the CONTROLVM message with success.
1664 parahotplug_request_complete(int id
, U16 active
)
1666 struct list_head
*pos
= NULL
;
1667 struct list_head
*tmp
= NULL
;
1669 spin_lock(&Parahotplug_request_list_lock
);
1671 /* Look for a request matching "id". */
1672 list_for_each_safe(pos
, tmp
, &Parahotplug_request_list
) {
1673 struct parahotplug_request
*req
=
1674 list_entry(pos
, struct parahotplug_request
, list
);
1675 if (req
->id
== id
) {
1676 /* Found a match. Remove it from the list and
1680 spin_unlock(&Parahotplug_request_list_lock
);
1681 req
->msg
.cmd
.deviceChangeState
.state
.Active
= active
;
1682 if (req
->msg
.hdr
.Flags
.responseExpected
)
1683 controlvm_respond_physdev_changestate(
1684 &req
->msg
.hdr
, CONTROLVM_RESP_SUCCESS
,
1685 req
->msg
.cmd
.deviceChangeState
.state
);
1686 parahotplug_request_destroy(req
);
1691 spin_unlock(&Parahotplug_request_list_lock
);
1696 * Enables or disables a PCI device by kicking off a udev script
1699 parahotplug_process_message(CONTROLVM_MESSAGE
*inmsg
)
1701 struct parahotplug_request
*req
;
1703 req
= parahotplug_request_create(inmsg
);
1706 LOGERR("parahotplug_process_message: couldn't allocate request");
1710 if (inmsg
->cmd
.deviceChangeState
.state
.Active
) {
1711 /* For enable messages, just respond with success
1712 * right away. This is a bit of a hack, but there are
1713 * issues with the early enable messages we get (with
1714 * either the udev script not detecting that the device
1715 * is up, or not getting called at all). Fortunately
1716 * the messages that get lost don't matter anyway, as
1717 * devices are automatically enabled at
1720 parahotplug_request_kickoff(req
);
1721 controlvm_respond_physdev_changestate(&inmsg
->hdr
,
1722 CONTROLVM_RESP_SUCCESS
,
1724 deviceChangeState
.state
);
1725 parahotplug_request_destroy(req
);
1727 /* For disable messages, add the request to the
1728 * request list before kicking off the udev script. It
1729 * won't get responded to until the script has
1730 * indicated it's done.
1732 spin_lock(&Parahotplug_request_list_lock
);
1733 list_add_tail(&(req
->list
), &Parahotplug_request_list
);
1734 spin_unlock(&Parahotplug_request_list_lock
);
1736 parahotplug_request_kickoff(req
);
1741 * Gets called when the udev script writes to
1742 * /proc/visorchipset/parahotplug. Expects input in the form of "<id>
1743 * <active>" where <id> is the identifier passed to the script that
1744 * matches a request on the request list, and <active> is 0 or 1
1745 * indicating whether the device is now enabled or not.
1748 parahotplug_proc_write(struct file
*file
, const char __user
*buffer
,
1749 size_t count
, loff_t
*ppos
)
1755 if (count
> sizeof(buf
) - 1) {
1756 LOGERR("parahotplug_proc_write: count (%d) exceeds size of buffer (%d)",
1757 (int) count
, (int) sizeof(buf
));
1760 if (copy_from_user(buf
, buffer
, count
)) {
1761 LOGERR("parahotplug_proc_write: copy_from_user failed");
1766 if (sscanf(buf
, "%u %hu", &id
, &active
) != 2) {
1771 if (active
!= 1 && active
!= 0) {
1772 LOGERR("parahotplug_proc_write: invalid active field");
1776 parahotplug_request_complete((int) id
, (U16
) active
);
1781 static const struct file_operations parahotplug_proc_fops
= {
1782 .owner
= THIS_MODULE
,
1783 .read
= visorchipset_proc_read_writeonly
,
1784 .write
= parahotplug_proc_write
,
1787 /* Process a controlvm message.
1789 * FALSE - this function will return FALSE only in the case where the
1790 * controlvm message was NOT processed, but processing must be
1791 * retried before reading the next controlvm message; a
1792 * scenario where this can occur is when we need to throttle
1793 * the allocation of memory in which to copy out controlvm
1795 * TRUE - processing of the controlvm message completed,
1796 * either successfully or with an error.
1799 handle_command(CONTROLVM_MESSAGE inmsg
, HOSTADDRESS channel_addr
)
1801 CONTROLVM_MESSAGE_PACKET
*cmd
= &inmsg
.cmd
;
1802 U64 parametersAddr
= 0;
1803 U32 parametersBytes
= 0;
1804 PARSER_CONTEXT
*parser_ctx
= NULL
;
1805 BOOL isLocalAddr
= FALSE
;
1806 CONTROLVM_MESSAGE ackmsg
;
1808 /* create parsing context if necessary */
1809 isLocalAddr
= (inmsg
.hdr
.Flags
.testMessage
== 1);
1810 if (channel_addr
== 0) {
1811 LOGERR("HUH? channel_addr is 0!");
1814 parametersAddr
= channel_addr
+ inmsg
.hdr
.PayloadVmOffset
;
1815 parametersBytes
= inmsg
.hdr
.PayloadBytes
;
1817 /* Parameter and channel addresses within test messages actually lie
1818 * within our OS-controlled memory. We need to know that, because it
1819 * makes a difference in how we compute the virtual address.
1821 if (parametersAddr
!= 0 && parametersBytes
!= 0) {
1824 parser_init_byteStream(parametersAddr
, parametersBytes
,
1825 isLocalAddr
, &retry
);
1828 LOGWRN("throttling to copy payload");
1831 LOGWRN("parsing failed");
1832 LOGWRN("inmsg.hdr.Id=0x%lx", (ulong
) inmsg
.hdr
.Id
);
1833 LOGWRN("parametersAddr=0x%llx", (u64
) parametersAddr
);
1834 LOGWRN("parametersBytes=%lu", (ulong
) parametersBytes
);
1835 LOGWRN("isLocalAddr=%d", isLocalAddr
);
1840 controlvm_init_response(&ackmsg
, &inmsg
.hdr
,
1841 CONTROLVM_RESP_SUCCESS
);
1842 if ((ControlVm_channel
)
1844 (!visorchannel_signalinsert
1845 (ControlVm_channel
, CONTROLVM_QUEUE_ACK
, &ackmsg
)))
1846 LOGWRN("failed to send ACK failed");
1848 switch (inmsg
.hdr
.Id
) {
1849 case CONTROLVM_CHIPSET_INIT
:
1850 LOGINF("CHIPSET_INIT(#busses=%lu,#switches=%lu)",
1851 (ulong
) inmsg
.cmd
.initChipset
.busCount
,
1852 (ulong
) inmsg
.cmd
.initChipset
.switchCount
);
1853 chipset_init(&inmsg
);
1855 case CONTROLVM_BUS_CREATE
:
1856 LOGINF("BUS_CREATE(%lu,#devs=%lu)",
1857 (ulong
) cmd
->createBus
.busNo
,
1858 (ulong
) cmd
->createBus
.deviceCount
);
1861 case CONTROLVM_BUS_DESTROY
:
1862 LOGINF("BUS_DESTROY(%lu)", (ulong
) cmd
->destroyBus
.busNo
);
1863 bus_destroy(&inmsg
);
1865 case CONTROLVM_BUS_CONFIGURE
:
1866 LOGINF("BUS_CONFIGURE(%lu)", (ulong
) cmd
->configureBus
.busNo
);
1867 bus_configure(&inmsg
, parser_ctx
);
1869 case CONTROLVM_DEVICE_CREATE
:
1870 LOGINF("DEVICE_CREATE(%lu,%lu)",
1871 (ulong
) cmd
->createDevice
.busNo
,
1872 (ulong
) cmd
->createDevice
.devNo
);
1873 my_device_create(&inmsg
);
1875 case CONTROLVM_DEVICE_CHANGESTATE
:
1876 if (cmd
->deviceChangeState
.flags
.physicalDevice
) {
1877 LOGINF("DEVICE_CHANGESTATE for physical device (%lu,%lu, active=%lu)",
1878 (ulong
) cmd
->deviceChangeState
.busNo
,
1879 (ulong
) cmd
->deviceChangeState
.devNo
,
1880 (ulong
) cmd
->deviceChangeState
.state
.Active
);
1881 parahotplug_process_message(&inmsg
);
1883 LOGINF("DEVICE_CHANGESTATE for virtual device (%lu,%lu, state.Alive=0x%lx)",
1884 (ulong
) cmd
->deviceChangeState
.busNo
,
1885 (ulong
) cmd
->deviceChangeState
.devNo
,
1886 (ulong
) cmd
->deviceChangeState
.state
.Alive
);
1887 /* save the hdr and cmd structures for later use */
1888 /* when sending back the response to Command */
1889 my_device_changestate(&inmsg
);
1890 g_DiagMsgHdr
= inmsg
.hdr
;
1891 g_DeviceChangeStatePacket
= inmsg
.cmd
;
1895 case CONTROLVM_DEVICE_DESTROY
:
1896 LOGINF("DEVICE_DESTROY(%lu,%lu)",
1897 (ulong
) cmd
->destroyDevice
.busNo
,
1898 (ulong
) cmd
->destroyDevice
.devNo
);
1899 my_device_destroy(&inmsg
);
1901 case CONTROLVM_DEVICE_CONFIGURE
:
1902 LOGINF("DEVICE_CONFIGURE(%lu,%lu)",
1903 (ulong
) cmd
->configureDevice
.busNo
,
1904 (ulong
) cmd
->configureDevice
.devNo
);
1905 /* no op for now, just send a respond that we passed */
1906 if (inmsg
.hdr
.Flags
.responseExpected
)
1907 controlvm_respond(&inmsg
.hdr
, CONTROLVM_RESP_SUCCESS
);
1909 case CONTROLVM_CHIPSET_READY
:
1910 LOGINF("CHIPSET_READY");
1911 chipset_ready(&inmsg
.hdr
);
1913 case CONTROLVM_CHIPSET_SELFTEST
:
1914 LOGINF("CHIPSET_SELFTEST");
1915 chipset_selftest(&inmsg
.hdr
);
1917 case CONTROLVM_CHIPSET_STOP
:
1918 LOGINF("CHIPSET_STOP");
1919 chipset_notready(&inmsg
.hdr
);
1922 LOGERR("unrecognized controlvm cmd=%d", (int) inmsg
.hdr
.Id
);
1923 if (inmsg
.hdr
.Flags
.responseExpected
)
1924 controlvm_respond(&inmsg
.hdr
,
1925 -CONTROLVM_RESP_ERROR_MESSAGE_ID_UNKNOWN
);
1929 if (parser_ctx
!= NULL
) {
1930 parser_done(parser_ctx
);
1937 controlvm_periodic_work(struct work_struct
*work
)
1939 VISORCHIPSET_CHANNEL_INFO chanInfo
;
1940 CONTROLVM_MESSAGE inmsg
;
1942 BOOL gotACommand
= FALSE
;
1943 BOOL handle_command_failed
= FALSE
;
1944 static U64 Poll_Count
;
1946 /* make sure visorbus server is registered for controlvm callbacks */
1947 if (visorchipset_serverregwait
&& !serverregistered
)
1949 /* make sure visorclientbus server is regsitered for controlvm
1952 if (visorchipset_clientregwait
&& !clientregistered
)
1955 memset(&chanInfo
, 0, sizeof(VISORCHIPSET_CHANNEL_INFO
));
1956 if (!ControlVm_channel
) {
1957 HOSTADDRESS addr
= controlvm_get_channel_address();
1960 visorchannel_create_with_lock
1962 sizeof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
),
1963 UltraControlvmChannelProtocolGuid
);
1964 if (ControlVm_channel
== NULL
)
1965 LOGERR("failed to create controlvm channel");
1966 else if (ULTRA_CONTROLVM_CHANNEL_OK_CLIENT
1967 (visorchannel_get_header(ControlVm_channel
),
1969 LOGINF("Channel %s (ControlVm) discovered",
1970 visorchannel_id(ControlVm_channel
, s
));
1971 initialize_controlvm_payload();
1973 LOGERR("controlvm channel is invalid");
1974 visorchannel_destroy(ControlVm_channel
);
1975 ControlVm_channel
= NULL
;
1981 if ((ControlVm_channel
!= NULL
) || (Poll_Count
>= 250))
1986 /* Check events to determine if response to CHIPSET_READY
1989 if (visorchipset_holdchipsetready
1990 && (g_ChipSetMsgHdr
.Id
!= CONTROLVM_INVALID
)) {
1991 if (check_chipset_events() == 1) {
1992 LOGINF("Sending CHIPSET_READY response");
1993 controlvm_respond(&g_ChipSetMsgHdr
, 0);
1994 clear_chipset_events();
1995 memset(&g_ChipSetMsgHdr
, 0,
1996 sizeof(CONTROLVM_MESSAGE_HEADER
));
2000 if (ControlVm_channel
) {
2001 while (visorchannel_signalremove(ControlVm_channel
,
2002 CONTROLVM_QUEUE_RESPONSE
,
2004 if (inmsg
.hdr
.PayloadMaxBytes
!= 0) {
2005 LOGERR("Payload of size %lu returned @%lu with unexpected message id %d.",
2006 (ulong
) inmsg
.hdr
.PayloadMaxBytes
,
2007 (ulong
) inmsg
.hdr
.PayloadVmOffset
,
2012 if (ControlVm_Pending_Msg_Valid
) {
2013 /* we throttled processing of a prior
2014 * msg, so try to process it again
2015 * rather than reading a new one
2017 inmsg
= ControlVm_Pending_Msg
;
2018 ControlVm_Pending_Msg_Valid
= FALSE
;
2021 gotACommand
= read_controlvm_event(&inmsg
);
2025 handle_command_failed
= FALSE
;
2026 while (gotACommand
&& (!handle_command_failed
)) {
2027 Most_recent_message_jiffies
= jiffies
;
2028 if (ControlVm_channel
) {
2029 if (handle_command(inmsg
,
2030 visorchannel_get_physaddr
2031 (ControlVm_channel
)))
2032 gotACommand
= read_controlvm_event(&inmsg
);
2034 /* this is a scenario where throttling
2035 * is required, but probably NOT an
2036 * error...; we stash the current
2037 * controlvm msg so we will attempt to
2038 * reprocess it on our next loop
2040 handle_command_failed
= TRUE
;
2041 ControlVm_Pending_Msg
= inmsg
;
2042 ControlVm_Pending_Msg_Valid
= TRUE
;
2046 handle_command(inmsg
, 0);
2047 gotACommand
= FALSE
;
2051 /* parahotplug_worker */
2052 parahotplug_process_list();
2056 if (time_after(jiffies
,
2057 Most_recent_message_jiffies
+ (HZ
* MIN_IDLE_SECONDS
))) {
2058 /* it's been longer than MIN_IDLE_SECONDS since we
2059 * processed our last controlvm message; slow down the
2062 if (Poll_jiffies
!= POLLJIFFIES_CONTROLVMCHANNEL_SLOW
) {
2063 LOGINF("switched to slow controlvm polling");
2064 Poll_jiffies
= POLLJIFFIES_CONTROLVMCHANNEL_SLOW
;
2067 if (Poll_jiffies
!= POLLJIFFIES_CONTROLVMCHANNEL_FAST
) {
2068 Poll_jiffies
= POLLJIFFIES_CONTROLVMCHANNEL_FAST
;
2069 LOGINF("switched to fast controlvm polling");
2073 queue_delayed_work(Periodic_controlvm_workqueue
,
2074 &Periodic_controlvm_work
, Poll_jiffies
);
2078 setup_crash_devices_work_queue(struct work_struct
*work
)
2081 CONTROLVM_MESSAGE localCrashCreateBusMsg
;
2082 CONTROLVM_MESSAGE localCrashCreateDevMsg
;
2083 CONTROLVM_MESSAGE msg
;
2084 HOSTADDRESS host_addr
;
2085 U32 localSavedCrashMsgOffset
;
2086 U16 localSavedCrashMsgCount
;
2088 /* make sure visorbus server is registered for controlvm callbacks */
2089 if (visorchipset_serverregwait
&& !serverregistered
)
2092 /* make sure visorclientbus server is regsitered for controlvm
2095 if (visorchipset_clientregwait
&& !clientregistered
)
2098 POSTCODE_LINUX_2(CRASH_DEV_ENTRY_PC
, POSTCODE_SEVERITY_INFO
);
2100 /* send init chipset msg */
2101 msg
.hdr
.Id
= CONTROLVM_CHIPSET_INIT
;
2102 msg
.cmd
.initChipset
.busCount
= 23;
2103 msg
.cmd
.initChipset
.switchCount
= 0;
2107 host_addr
= controlvm_get_channel_address();
2109 LOGERR("Huh? Host address is NULL");
2110 POSTCODE_LINUX_2(CRASH_DEV_HADDR_NULL
, POSTCODE_SEVERITY_ERR
);
2115 visorchannel_create_with_lock
2117 sizeof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
),
2118 UltraControlvmChannelProtocolGuid
);
2120 if (ControlVm_channel
== NULL
) {
2121 LOGERR("failed to create controlvm channel");
2122 POSTCODE_LINUX_2(CRASH_DEV_CONTROLVM_NULL
,
2123 POSTCODE_SEVERITY_ERR
);
2127 /* get saved message count */
2128 if (visorchannel_read(ControlVm_channel
,
2129 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2130 SavedCrashMsgCount
),
2131 &localSavedCrashMsgCount
, sizeof(U16
)) < 0) {
2132 LOGERR("failed to get Saved Message Count");
2133 POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC
,
2134 POSTCODE_SEVERITY_ERR
);
2138 if (localSavedCrashMsgCount
!= CONTROLVM_CRASHMSG_MAX
) {
2139 LOGERR("Saved Message Count incorrect %d",
2140 localSavedCrashMsgCount
);
2141 POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC
,
2142 localSavedCrashMsgCount
,
2143 POSTCODE_SEVERITY_ERR
);
2147 /* get saved crash message offset */
2148 if (visorchannel_read(ControlVm_channel
,
2149 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2150 SavedCrashMsgOffset
),
2151 &localSavedCrashMsgOffset
, sizeof(U32
)) < 0) {
2152 LOGERR("failed to get Saved Message Offset");
2153 POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC
,
2154 POSTCODE_SEVERITY_ERR
);
2158 /* read create device message for storage bus offset */
2159 if (visorchannel_read(ControlVm_channel
,
2160 localSavedCrashMsgOffset
,
2161 &localCrashCreateBusMsg
,
2162 sizeof(CONTROLVM_MESSAGE
)) < 0) {
2163 LOGERR("CRASH_DEV_RD_BUS_FAIULRE: Failed to read CrashCreateBusMsg!");
2164 POSTCODE_LINUX_2(CRASH_DEV_RD_BUS_FAIULRE_PC
,
2165 POSTCODE_SEVERITY_ERR
);
2169 /* read create device message for storage device */
2170 if (visorchannel_read(ControlVm_channel
,
2171 localSavedCrashMsgOffset
+
2172 sizeof(CONTROLVM_MESSAGE
),
2173 &localCrashCreateDevMsg
,
2174 sizeof(CONTROLVM_MESSAGE
)) < 0) {
2175 LOGERR("CRASH_DEV_RD_DEV_FAIULRE: Failed to read CrashCreateDevMsg!");
2176 POSTCODE_LINUX_2(CRASH_DEV_RD_DEV_FAIULRE_PC
,
2177 POSTCODE_SEVERITY_ERR
);
2181 /* reuse IOVM create bus message */
2182 if (localCrashCreateBusMsg
.cmd
.createBus
.channelAddr
!= 0)
2183 bus_create(&localCrashCreateBusMsg
);
2185 LOGERR("CrashCreateBusMsg is null, no dump will be taken");
2186 POSTCODE_LINUX_2(CRASH_DEV_BUS_NULL_FAILURE_PC
,
2187 POSTCODE_SEVERITY_ERR
);
2191 /* reuse create device message for storage device */
2192 if (localCrashCreateDevMsg
.cmd
.createDevice
.channelAddr
!= 0)
2193 my_device_create(&localCrashCreateDevMsg
);
2195 LOGERR("CrashCreateDevMsg is null, no dump will be taken");
2196 POSTCODE_LINUX_2(CRASH_DEV_DEV_NULL_FAILURE_PC
,
2197 POSTCODE_SEVERITY_ERR
);
2200 LOGINF("Bus and device ready for dumping");
2201 POSTCODE_LINUX_2(CRASH_DEV_EXIT_PC
, POSTCODE_SEVERITY_INFO
);
2206 Poll_jiffies
= POLLJIFFIES_CONTROLVMCHANNEL_SLOW
;
2208 queue_delayed_work(Periodic_controlvm_workqueue
,
2209 &Periodic_controlvm_work
, Poll_jiffies
);
2213 bus_create_response(ulong busNo
, int response
)
2215 bus_responder(CONTROLVM_BUS_CREATE
, busNo
, response
);
2219 bus_destroy_response(ulong busNo
, int response
)
2221 bus_responder(CONTROLVM_BUS_DESTROY
, busNo
, response
);
2225 device_create_response(ulong busNo
, ulong devNo
, int response
)
2227 device_responder(CONTROLVM_DEVICE_CREATE
, busNo
, devNo
, response
);
2231 device_destroy_response(ulong busNo
, ulong devNo
, int response
)
2233 device_responder(CONTROLVM_DEVICE_DESTROY
, busNo
, devNo
, response
);
2237 visorchipset_device_pause_response(ulong busNo
, ulong devNo
, int response
)
2240 device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE
,
2241 busNo
, devNo
, response
,
2242 SegmentStateStandby
);
2244 EXPORT_SYMBOL_GPL(visorchipset_device_pause_response
);
2247 device_resume_response(ulong busNo
, ulong devNo
, int response
)
2249 device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE
,
2250 busNo
, devNo
, response
,
2251 SegmentStateRunning
);
2255 visorchipset_get_bus_info(ulong busNo
, VISORCHIPSET_BUS_INFO
*busInfo
)
2257 void *p
= findbus(&BusInfoList
, busNo
);
2259 LOGERR("(%lu) failed", busNo
);
2262 memcpy(busInfo
, p
, sizeof(VISORCHIPSET_BUS_INFO
));
2265 EXPORT_SYMBOL_GPL(visorchipset_get_bus_info
);
2268 visorchipset_set_bus_context(ulong busNo
, void *context
)
2270 VISORCHIPSET_BUS_INFO
*p
= findbus(&BusInfoList
, busNo
);
2272 LOGERR("(%lu) failed", busNo
);
2275 p
->bus_driver_context
= context
;
2278 EXPORT_SYMBOL_GPL(visorchipset_set_bus_context
);
2281 visorchipset_get_device_info(ulong busNo
, ulong devNo
,
2282 VISORCHIPSET_DEVICE_INFO
*devInfo
)
2284 void *p
= finddevice(&DevInfoList
, busNo
, devNo
);
2286 LOGERR("(%lu,%lu) failed", busNo
, devNo
);
2289 memcpy(devInfo
, p
, sizeof(VISORCHIPSET_DEVICE_INFO
));
2292 EXPORT_SYMBOL_GPL(visorchipset_get_device_info
);
2295 visorchipset_set_device_context(ulong busNo
, ulong devNo
, void *context
)
2297 VISORCHIPSET_DEVICE_INFO
*p
= finddevice(&DevInfoList
, busNo
, devNo
);
2299 LOGERR("(%lu,%lu) failed", busNo
, devNo
);
2302 p
->bus_driver_context
= context
;
2305 EXPORT_SYMBOL_GPL(visorchipset_set_device_context
);
2307 /* Generic wrapper function for allocating memory from a kmem_cache pool.
2310 visorchipset_cache_alloc(struct kmem_cache
*pool
, BOOL ok_to_block
,
2320 /* __GFP_NORETRY means "ok to fail", meaning
2321 * kmem_cache_alloc() can return NULL, implying the caller CAN
2322 * cope with failure. If you do NOT specify __GFP_NORETRY,
2323 * Linux will go to extreme measures to get memory for you
2324 * (like, invoke oom killer), which will probably cripple the
2327 gfp
|= __GFP_NORETRY
;
2328 p
= kmem_cache_alloc(pool
, gfp
);
2330 LOGERR("kmem_cache_alloc failed early @%s:%d\n", fn
, ln
);
2333 atomic_inc(&Visorchipset_cache_buffers_in_use
);
2337 /* Generic wrapper function for freeing memory from a kmem_cache pool.
2340 visorchipset_cache_free(struct kmem_cache
*pool
, void *p
, char *fn
, int ln
)
2343 LOGERR("NULL pointer @%s:%d\n", fn
, ln
);
2346 atomic_dec(&Visorchipset_cache_buffers_in_use
);
2347 kmem_cache_free(pool
, p
);
2350 #define gettoken(bufp) strsep(bufp, " -\t\n")
2353 chipset_proc_write(struct file
*file
, const char __user
*buffer
,
2354 size_t count
, loff_t
*ppos
)
2359 if (count
> sizeof(buf
) - 1) {
2360 LOGERR("chipset_proc_write: count (%d) exceeds size of buffer (%d)",
2361 (int) count
, (int) sizeof(buffer
));
2364 if (copy_from_user(buf
, buffer
, count
)) {
2365 LOGERR("chipset_proc_write: copy_from_user failed");
2371 token
= gettoken(&p
);
2373 if (strcmp(token
, "CALLHOMEDISK_MOUNTED") == 0) {
2374 token
= gettoken(&p
);
2375 /* The Call Home Disk has been mounted */
2376 if (strcmp(token
, "0") == 0)
2377 chipset_events
[0] = 1;
2378 } else if (strcmp(token
, "MODULES_LOADED") == 0) {
2379 token
= gettoken(&p
);
2380 /* All modules for the partition have been loaded */
2381 if (strcmp(token
, "0") == 0)
2382 chipset_events
[1] = 1;
2383 } else if (token
== NULL
) {
2384 /* No event specified */
2385 LOGERR("No event was specified to send CHIPSET_READY response");
2388 /* Unsupported event specified */
2389 LOGERR("%s is an invalid event for sending CHIPSET_READY response", token
);
2397 visorchipset_proc_read_writeonly(struct file
*file
, char __user
*buf
,
2398 size_t len
, loff_t
*offset
)
2404 * Reads the InstallationError, InstallationTextId,
2405 * InstallationRemainingSteps fields of ControlVMChannel.
2408 proc_read_installer(struct file
*file
, char __user
*buf
,
2409 size_t len
, loff_t
*offset
)
2415 loff_t pos
= *offset
;
2417 if (!ControlVm_channel
)
2423 if (pos
> 0 || !len
)
2426 vbuf
= kzalloc(len
, GFP_KERNEL
);
2430 visorchannel_read(ControlVm_channel
,
2431 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2432 InstallationRemainingSteps
), &remainingSteps
,
2434 visorchannel_read(ControlVm_channel
,
2435 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2436 InstallationError
), &error
, sizeof(U32
));
2437 visorchannel_read(ControlVm_channel
,
2438 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2439 InstallationTextId
), &textId
, sizeof(U32
));
2441 length
= sprintf(vbuf
, "%u %u %u\n", remainingSteps
, error
, textId
);
2442 if (copy_to_user(buf
, vbuf
, length
)) {
2453 * Writes to the InstallationError, InstallationTextId,
2454 * InstallationRemainingSteps fields of
2456 * Input: RemainingSteps Error TextId
2457 * Limit 32 characters input
2459 #define UINT16_MAX (65535U)
2460 #define UINT32_MAX (4294967295U)
2462 proc_write_installer(struct file
*file
,
2463 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
2469 if (!ControlVm_channel
)
2472 /* Check to make sure there is no buffer overflow */
2473 if (count
> (sizeof(buf
) - 1))
2476 if (copy_from_user(buf
, buffer
, count
)) {
2477 WARN(1, "Error copying from user space\n");
2481 if (sscanf(buf
, "%hu %i %i", &remainingSteps
, &error
, &textId
) != 3) {
2482 remainingSteps
= UINT16_MAX
;
2484 textId
= UINT32_MAX
;
2487 if (remainingSteps
!= UINT16_MAX
) {
2488 if (visorchannel_write
2490 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2491 InstallationRemainingSteps
), &remainingSteps
,
2493 WARN(1, "Installation Status Write Failed - Write function error - RemainingSteps = %d\n",
2497 if (error
!= UINT32_MAX
) {
2498 if (visorchannel_write
2500 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2501 InstallationError
), &error
, sizeof(U32
)) < 0)
2502 WARN(1, "Installation Status Write Failed - Write function error - Error = %d\n",
2506 if (textId
!= UINT32_MAX
) {
2507 if (visorchannel_write
2509 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2510 InstallationTextId
), &textId
, sizeof(U32
)) < 0)
2511 WARN(1, "Installation Status Write Failed - Write function error - TextId = %d\n",
2515 /* So this function isn't called multiple times, must return
2522 * Reads the ToolAction field of ControlVMChannel.
2525 proc_read_toolaction(struct file
*file
, char __user
*buf
,
2526 size_t len
, loff_t
*offset
)
2531 loff_t pos
= *offset
;
2533 if (!ControlVm_channel
)
2539 if (pos
> 0 || !len
)
2542 vbuf
= kzalloc(len
, GFP_KERNEL
);
2546 visorchannel_read(ControlVm_channel
,
2547 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2548 ToolAction
), &toolAction
, sizeof(U8
));
2550 length
= sprintf(vbuf
, "%u\n", toolAction
);
2551 if (copy_to_user(buf
, vbuf
, length
)) {
2562 * Writes to the ToolAction field of ControlVMChannel.
2564 * Limit 3 characters input
2566 #define UINT8_MAX (255U)
2568 proc_write_toolaction(struct file
*file
,
2569 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
2574 if (!ControlVm_channel
)
2577 /* Check to make sure there is no buffer overflow */
2578 if (count
> (sizeof(buf
) - 1))
2581 if (copy_from_user(buf
, buffer
, count
)) {
2582 WARN(1, "Error copying from user space\n");
2586 if (sscanf(buf
, "%hhd", &toolAction
) != 1)
2587 toolAction
= UINT8_MAX
;
2589 if (toolAction
!= UINT8_MAX
) {
2590 if (visorchannel_write
2592 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
, ToolAction
),
2593 &toolAction
, sizeof(U8
)) < 0)
2594 WARN(1, "Installation ToolAction Write Failed - ToolAction = %d\n",
2598 /* So this function isn't called multiple times, must return
2605 * Reads the EfiSparIndication.BootToTool field of ControlVMChannel.
2608 proc_read_bootToTool(struct file
*file
, char __user
*buf
,
2609 size_t len
, loff_t
*offset
)
2612 ULTRA_EFI_SPAR_INDICATION efiSparIndication
;
2614 loff_t pos
= *offset
;
2616 if (!ControlVm_channel
)
2622 if (pos
> 0 || !len
)
2625 vbuf
= kzalloc(len
, GFP_KERNEL
);
2629 visorchannel_read(ControlVm_channel
,
2630 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
,
2631 EfiSparIndication
), &efiSparIndication
,
2632 sizeof(ULTRA_EFI_SPAR_INDICATION
));
2634 length
= sprintf(vbuf
, "%d\n", (int) efiSparIndication
.BootToTool
);
2635 if (copy_to_user(buf
, vbuf
, length
)) {
2646 * Writes to the EfiSparIndication.BootToTool field of ControlVMChannel.
2647 * Input: 1 or 0 (1 being on, 0 being off)
2650 proc_write_bootToTool(struct file
*file
,
2651 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
2655 ULTRA_EFI_SPAR_INDICATION efiSparIndication
;
2657 if (!ControlVm_channel
)
2660 /* Check to make sure there is no buffer overflow */
2661 if (count
> (sizeof(buf
) - 1))
2664 if (copy_from_user(buf
, buffer
, count
)) {
2665 WARN(1, "Error copying from user space\n");
2669 if (sscanf(buf
, "%i", &inputVal
) != 1)
2672 efiSparIndication
.BootToTool
= (inputVal
== 1 ? 1 : 0);
2674 if (visorchannel_write
2676 offsetof(ULTRA_CONTROLVM_CHANNEL_PROTOCOL
, EfiSparIndication
),
2677 &efiSparIndication
, sizeof(ULTRA_EFI_SPAR_INDICATION
)) < 0)
2679 ("Installation BootToTool Write Failed - BootToTool = %d\n",
2680 (int) efiSparIndication
.BootToTool
);
2682 /* So this function isn't called multiple times, must return
2688 static const struct file_operations chipset_proc_fops
= {
2689 .owner
= THIS_MODULE
,
2690 .read
= visorchipset_proc_read_writeonly
,
2691 .write
= chipset_proc_write
,
2695 visorchipset_init(void)
2698 struct proc_dir_entry
*installer_file
;
2699 struct proc_dir_entry
*toolaction_file
;
2700 struct proc_dir_entry
*bootToTool_file
;
2702 LOGINF("chipset driver version %s loaded", VERSION
);
2703 /* process module options */
2704 POSTCODE_LINUX_2(DRIVER_ENTRY_PC
, POSTCODE_SEVERITY_INFO
);
2706 LOGINF("option - testvnic=%d", visorchipset_testvnic
);
2707 LOGINF("option - testvnicclient=%d", visorchipset_testvnicclient
);
2708 LOGINF("option - testmsg=%d", visorchipset_testmsg
);
2709 LOGINF("option - testteardown=%d", visorchipset_testteardown
);
2710 LOGINF("option - major=%d", visorchipset_major
);
2711 LOGINF("option - serverregwait=%d", visorchipset_serverregwait
);
2712 LOGINF("option - clientregwait=%d", visorchipset_clientregwait
);
2713 LOGINF("option - holdchipsetready=%d", visorchipset_holdchipsetready
);
2715 memset(&BusDev_Server_Notifiers
, 0, sizeof(BusDev_Server_Notifiers
));
2716 memset(&BusDev_Client_Notifiers
, 0, sizeof(BusDev_Client_Notifiers
));
2717 memset(&ControlVm_payload_info
, 0, sizeof(ControlVm_payload_info
));
2718 memset(&LiveDump_info
, 0, sizeof(LiveDump_info
));
2719 atomic_set(&LiveDump_info
.buffers_in_use
, 0);
2721 if (visorchipset_testvnic
) {
2722 ERRDRV("testvnic option no longer supported: (status = %d)\n",
2724 POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC
, x
, DIAG_SEVERITY_ERR
);
2730 MajorDev
= MKDEV(visorchipset_major
, 0);
2731 rc
= visorchipset_file_init(MajorDev
, &ControlVm_channel
);
2733 ERRDRV("visorchipset_file_init(MajorDev, &ControlVm_channel): error (status=%d)\n", rc
);
2734 POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC
, DIAG_SEVERITY_ERR
);
2739 memset(PartitionPropertyNames
, 0, sizeof(PartitionPropertyNames
));
2740 memset(ControlVmPropertyNames
, 0, sizeof(ControlVmPropertyNames
));
2741 InitPartitionProperties();
2742 InitControlVmProperties();
2744 PartitionType
= visor_proc_CreateType(ProcDir
, PartitionTypeNames
,
2746 PartitionPropertyNames
,
2747 &show_partition_property
);
2749 visor_proc_CreateType(ProcDir
, ControlVmTypeNames
,
2750 (const char **) ControlVmPropertyNames
,
2751 &show_controlvm_property
);
2753 ControlVmObject
= visor_proc_CreateObject(ControlVmType
, NULL
, NULL
);
2755 /* Setup Installation fields */
2756 installer_file
= proc_create("installer", 0644, ProcDir
,
2757 &proc_installer_fops
);
2758 /* Setup the ToolAction field */
2759 toolaction_file
= proc_create("toolaction", 0644, ProcDir
,
2760 &proc_toolaction_fops
);
2761 /* Setup the BootToTool field */
2762 bootToTool_file
= proc_create("boottotool", 0644, ProcDir
,
2763 &proc_bootToTool_fops
);
2765 memset(&g_DiagMsgHdr
, 0, sizeof(CONTROLVM_MESSAGE_HEADER
));
2767 chipset_proc_dir
= proc_create(VISORCHIPSET_CHIPSET_PROC_ENTRY_FN
,
2768 0644, ProcDir
, &chipset_proc_fops
);
2769 memset(&g_ChipSetMsgHdr
, 0, sizeof(CONTROLVM_MESSAGE_HEADER
));
2771 parahotplug_proc_dir
=
2772 proc_create(VISORCHIPSET_PARAHOTPLUG_PROC_ENTRY_FN
, 0200,
2773 ProcDir
, ¶hotplug_proc_fops
);
2774 memset(&g_DelDumpMsgHdr
, 0, sizeof(CONTROLVM_MESSAGE_HEADER
));
2776 if (filexfer_constructor(sizeof(struct putfile_request
)) < 0) {
2777 ERRDRV("filexfer_constructor failed: (status=-1)\n");
2778 POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC
, DIAG_SEVERITY_ERR
);
2782 Putfile_buffer_list_pool
=
2783 kmem_cache_create(Putfile_buffer_list_pool_name
,
2784 sizeof(struct putfile_buffer_entry
),
2785 0, SLAB_HWCACHE_ALIGN
, NULL
);
2786 if (!Putfile_buffer_list_pool
) {
2787 ERRDRV("failed to alloc Putfile_buffer_list_pool: (status=-1)\n");
2788 POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC
, DIAG_SEVERITY_ERR
);
2792 if (visorchipset_disable_controlvm
) {
2793 LOGINF("visorchipset_init:controlvm disabled");
2795 /* if booting in a crash kernel */
2796 if (visorchipset_crash_kernel
)
2797 INIT_DELAYED_WORK(&Periodic_controlvm_work
,
2798 setup_crash_devices_work_queue
);
2800 INIT_DELAYED_WORK(&Periodic_controlvm_work
,
2801 controlvm_periodic_work
);
2802 Periodic_controlvm_workqueue
=
2803 create_singlethread_workqueue("visorchipset_controlvm");
2805 if (Periodic_controlvm_workqueue
== NULL
) {
2806 ERRDRV("cannot create controlvm workqueue: (status=%d)\n",
2808 POSTCODE_LINUX_2(CREATE_WORKQUEUE_FAILED_PC
,
2813 Most_recent_message_jiffies
= jiffies
;
2814 Poll_jiffies
= POLLJIFFIES_CONTROLVMCHANNEL_FAST
;
2815 rc
= queue_delayed_work(Periodic_controlvm_workqueue
,
2816 &Periodic_controlvm_work
, Poll_jiffies
);
2818 ERRDRV("queue_delayed_work(Periodic_controlvm_workqueue, &Periodic_controlvm_work, Poll_jiffies): error (status=%d)\n", rc
);
2819 POSTCODE_LINUX_2(QUEUE_DELAYED_WORK_PC
,
2826 Visorchipset_platform_device
.dev
.devt
= MajorDev
;
2827 if (platform_device_register(&Visorchipset_platform_device
) < 0) {
2828 ERRDRV("platform_device_register(visorchipset) failed: (status=-1)\n");
2829 POSTCODE_LINUX_2(DEVICE_REGISTER_FAILURE_PC
, DIAG_SEVERITY_ERR
);
2833 LOGINF("visorchipset device created");
2834 POSTCODE_LINUX_2(CHIPSET_INIT_SUCCESS_PC
, POSTCODE_SEVERITY_INFO
);
2838 LOGERR("visorchipset_init failed");
2839 POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC
, rc
,
2840 POSTCODE_SEVERITY_ERR
);
2846 visorchipset_exit(void)
2849 POSTCODE_LINUX_2(DRIVER_EXIT_PC
, POSTCODE_SEVERITY_INFO
);
2851 if (visorchipset_disable_controlvm
) {
2854 cancel_delayed_work(&Periodic_controlvm_work
);
2855 flush_workqueue(Periodic_controlvm_workqueue
);
2856 destroy_workqueue(Periodic_controlvm_workqueue
);
2857 Periodic_controlvm_workqueue
= NULL
;
2858 destroy_controlvm_payload_info(&ControlVm_payload_info
);
2860 Test_Vnic_channel
= NULL
;
2861 if (Putfile_buffer_list_pool
) {
2862 kmem_cache_destroy(Putfile_buffer_list_pool
);
2863 Putfile_buffer_list_pool
= NULL
;
2865 filexfer_destructor();
2866 if (ControlVmObject
) {
2867 visor_proc_DestroyObject(ControlVmObject
);
2868 ControlVmObject
= NULL
;
2870 cleanup_controlvm_structures();
2872 if (ControlVmType
) {
2873 visor_proc_DestroyType(ControlVmType
);
2874 ControlVmType
= NULL
;
2876 if (PartitionType
) {
2877 visor_proc_DestroyType(PartitionType
);
2878 PartitionType
= NULL
;
2880 if (diag_proc_dir
) {
2881 remove_proc_entry(VISORCHIPSET_DIAG_PROC_ENTRY_FN
, ProcDir
);
2882 diag_proc_dir
= NULL
;
2884 memset(&g_DiagMsgHdr
, 0, sizeof(CONTROLVM_MESSAGE_HEADER
));
2886 if (chipset_proc_dir
) {
2887 remove_proc_entry(VISORCHIPSET_CHIPSET_PROC_ENTRY_FN
, ProcDir
);
2888 chipset_proc_dir
= NULL
;
2890 memset(&g_ChipSetMsgHdr
, 0, sizeof(CONTROLVM_MESSAGE_HEADER
));
2892 if (parahotplug_proc_dir
) {
2893 remove_proc_entry(VISORCHIPSET_PARAHOTPLUG_PROC_ENTRY_FN
,
2895 parahotplug_proc_dir
= NULL
;
2898 memset(&g_DelDumpMsgHdr
, 0, sizeof(CONTROLVM_MESSAGE_HEADER
));
2901 if (ControlVm_channel
!= NULL
) {
2902 LOGINF("Channel %s (ControlVm) disconnected",
2903 visorchannel_id(ControlVm_channel
, s
));
2904 visorchannel_destroy(ControlVm_channel
);
2905 ControlVm_channel
= NULL
;
2908 visorchipset_file_cleanup();
2909 POSTCODE_LINUX_2(DRIVER_EXIT_PC
, POSTCODE_SEVERITY_INFO
);
2910 LOGINF("chipset driver unloaded");
2913 module_param_named(testvnic
, visorchipset_testvnic
, int, S_IRUGO
);
2914 MODULE_PARM_DESC(visorchipset_testvnic
, "1 to test vnic, using dummy VNIC connected via a loopback to a physical ethernet");
2915 int visorchipset_testvnic
= 0;
2917 module_param_named(testvnicclient
, visorchipset_testvnicclient
, int, S_IRUGO
);
2918 MODULE_PARM_DESC(visorchipset_testvnicclient
, "1 to test vnic, using real VNIC channel attached to a separate IOVM guest");
2919 int visorchipset_testvnicclient
= 0;
2921 module_param_named(testmsg
, visorchipset_testmsg
, int, S_IRUGO
);
2922 MODULE_PARM_DESC(visorchipset_testmsg
,
2923 "1 to manufacture the chipset, bus, and switch messages");
2924 int visorchipset_testmsg
= 0;
2926 module_param_named(major
, visorchipset_major
, int, S_IRUGO
);
2927 MODULE_PARM_DESC(visorchipset_major
, "major device number to use for the device node");
2928 int visorchipset_major
= 0;
2930 module_param_named(serverregwait
, visorchipset_serverregwait
, int, S_IRUGO
);
2931 MODULE_PARM_DESC(visorchipset_serverreqwait
,
2932 "1 to have the module wait for the visor bus to register");
2933 int visorchipset_serverregwait
= 0; /* default is off */
2934 module_param_named(clientregwait
, visorchipset_clientregwait
, int, S_IRUGO
);
2935 MODULE_PARM_DESC(visorchipset_clientregwait
, "1 to have the module wait for the visorclientbus to register");
2936 int visorchipset_clientregwait
= 1; /* default is on */
2937 module_param_named(testteardown
, visorchipset_testteardown
, int, S_IRUGO
);
2938 MODULE_PARM_DESC(visorchipset_testteardown
,
2939 "1 to test teardown of the chipset, bus, and switch");
2940 int visorchipset_testteardown
= 0; /* default is off */
2941 module_param_named(disable_controlvm
, visorchipset_disable_controlvm
, int,
2943 MODULE_PARM_DESC(visorchipset_disable_controlvm
,
2944 "1 to disable polling of controlVm channel");
2945 int visorchipset_disable_controlvm
= 0; /* default is off */
2946 module_param_named(crash_kernel
, visorchipset_crash_kernel
, int, S_IRUGO
);
2947 MODULE_PARM_DESC(visorchipset_crash_kernel
,
2948 "1 means we are running in crash kernel");
2949 int visorchipset_crash_kernel
= 0; /* default is running in non-crash kernel */
2950 module_param_named(holdchipsetready
, visorchipset_holdchipsetready
,
2952 MODULE_PARM_DESC(visorchipset_holdchipsetready
,
2953 "1 to hold response to CHIPSET_READY");
2954 int visorchipset_holdchipsetready
= 0; /* default is to send CHIPSET_READY
2955 * response immediately */
2956 module_init(visorchipset_init
);
2957 module_exit(visorchipset_exit
);
2959 MODULE_AUTHOR("Unisys");
2960 MODULE_LICENSE("GPL");
2961 MODULE_DESCRIPTION("Supervisor chipset driver for service partition: ver "
2963 MODULE_VERSION(VERSION
);