3 * Copyright (C) 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 "visorchipset.h"
20 #include "procobjecttree.h"
21 #include "visorchannel.h"
22 #include "periodic_work.h"
26 #include "controlvmcompletionstatus.h"
27 #include "guestlinuxdebug.h"
29 #include <linux/nls.h>
30 #include <linux/netdevice.h>
31 #include <linux/platform_device.h>
32 #include <linux/uuid.h>
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
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
46 /* When the controlvm channel is idle for at least MIN_IDLE_SECONDS,
47 * we switch to slow polling mode. As soon as we get a controlvm
48 * message, we switch back to fast polling mode.
50 #define MIN_IDLE_SECONDS 10
51 static ulong poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST;
52 static ulong most_recent_message_jiffies; /* when we got our last
53 * controlvm message */
62 static int serverregistered;
63 static int clientregistered;
65 #define MAX_CHIPSET_EVENTS 2
66 static u8 chipset_events[MAX_CHIPSET_EVENTS] = { 0, 0 };
68 static struct delayed_work periodic_controlvm_work;
69 static struct workqueue_struct *periodic_controlvm_workqueue;
70 static DEFINE_SEMAPHORE(notifier_lock);
72 static struct controlvm_message_header g_diag_msg_hdr;
73 static struct controlvm_message_header g_chipset_msg_hdr;
74 static struct controlvm_message_header g_del_dump_msg_hdr;
75 static const uuid_le spar_diag_pool_channel_protocol_uuid =
76 SPAR_DIAG_POOL_CHANNEL_PROTOCOL_UUID;
77 /* 0xffffff is an invalid Bus/Device number */
78 static ulong g_diagpool_bus_no = 0xffffff;
79 static ulong g_diagpool_dev_no = 0xffffff;
80 static struct controlvm_message_packet g_devicechangestate_packet;
82 /* Only VNIC and VHBA channels are sent to visorclientbus (aka
85 #define FOR_VISORHACKBUS(channel_type_guid) \
86 (((uuid_le_cmp(channel_type_guid,\
87 spar_vnic_channel_protocol_uuid) == 0) ||\
88 (uuid_le_cmp(channel_type_guid,\
89 spar_vhba_channel_protocol_uuid) == 0)))
90 #define FOR_VISORBUS(channel_type_guid) (!(FOR_VISORHACKBUS(channel_type_guid)))
92 #define is_diagpool_channel(channel_type_guid) \
93 (uuid_le_cmp(channel_type_guid,\
94 spar_diag_pool_channel_protocol_uuid) == 0)
96 static LIST_HEAD(bus_info_list);
97 static LIST_HEAD(dev_info_list);
99 static struct visorchannel *controlvm_channel;
101 /* Manages the request payload in the controlvm channel */
102 static struct controlvm_payload_info {
103 u8 __iomem *ptr; /* pointer to base address of payload pool */
104 u64 offset; /* offset from beginning of controlvm
105 * channel to beginning of payload * pool */
106 u32 bytes; /* number of bytes in payload pool */
107 } controlvm_payload_info;
109 /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE /
110 * CONTROLVM_DUMP_GETTEXTDUMP / CONTROLVM_DUMP_COMPLETE conversation.
112 static struct livedump_info {
113 struct controlvm_message_header dumpcapture_header;
114 struct controlvm_message_header gettextdump_header;
115 struct controlvm_message_header dumpcomplete_header;
116 BOOL gettextdump_outstanding;
119 atomic_t buffers_in_use;
123 /* The following globals are used to handle the scenario where we are unable to
124 * offload the payload from a controlvm message due to memory requirements. In
125 * this scenario, we simply stash the controlvm message, then attempt to
126 * process it again the next time controlvm_periodic_work() runs.
128 static struct controlvm_message ControlVm_Pending_Msg;
129 static BOOL ControlVm_Pending_Msg_Valid = FALSE;
131 /* Pool of struct putfile_buffer_entry, for keeping track of pending (incoming)
132 * TRANSMIT_FILE PutFile payloads.
134 static struct kmem_cache *Putfile_buffer_list_pool;
135 static const char Putfile_buffer_list_pool_name[] =
136 "controlvm_putfile_buffer_list_pool";
138 /* This identifies a data buffer that has been received via a controlvm messages
139 * in a remote --> local CONTROLVM_TRANSMIT_FILE conversation.
141 struct putfile_buffer_entry {
142 struct list_head next; /* putfile_buffer_entry list */
143 struct parser_context *parser_ctx; /* points to input data buffer */
146 /* List of struct putfile_request *, via next_putfile_request member.
147 * Each entry in this list identifies an outstanding TRANSMIT_FILE
150 static LIST_HEAD(Putfile_request_list);
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.
156 struct putfile_active_buffer {
157 /* a payload from a controlvm message, containing a file data buffer */
158 struct parser_context *parser_ctx;
159 /* points within data area of parser_ctx to next byte of data */
161 /* # bytes left from <pnext> to the end of this data buffer */
162 size_t bytes_remaining;
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>.
170 struct putfile_request {
171 u64 sig; /* PUTFILE_REQUEST_SIG */
173 /* header from original TransmitFile request */
174 struct controlvm_message_header controlvm_header;
175 u64 file_request_number; /* from original TransmitFile request */
177 /* link to next struct putfile_request */
178 struct list_head next_putfile_request;
180 /* most-recent sequence number supplied via a controlvm message */
181 u64 data_sequence_number;
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
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 */
192 /* waiters for input_buffer_list to go non-empty */
193 wait_queue_head_t input_buffer_wq;
195 /* data not yet read within current putfile_buffer_entry */
196 struct putfile_active_buffer active_buf;
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;
206 static atomic_t Visorchipset_cache_buffers_in_use = ATOMIC_INIT(0);
208 struct parahotplug_request {
209 struct list_head list;
211 unsigned long expiration;
212 struct controlvm_message msg;
215 static LIST_HEAD(Parahotplug_request_list);
216 static DEFINE_SPINLOCK(Parahotplug_request_list_lock); /* lock for above */
217 static void parahotplug_process_list(void);
219 /* Manages the info for a CONTROLVM_DUMP_CAPTURESTATE /
220 * CONTROLVM_REPORTEVENT.
222 static struct visorchipset_busdev_notifiers BusDev_Server_Notifiers;
223 static struct visorchipset_busdev_notifiers BusDev_Client_Notifiers;
225 static void bus_create_response(ulong busNo, int response);
226 static void bus_destroy_response(ulong busNo, int response);
227 static void device_create_response(ulong busNo, ulong devNo, int response);
228 static void device_destroy_response(ulong busNo, ulong devNo, int response);
229 static void device_resume_response(ulong busNo, ulong devNo, int response);
231 static struct visorchipset_busdev_responders BusDev_Responders = {
232 .bus_create = bus_create_response,
233 .bus_destroy = bus_destroy_response,
234 .device_create = device_create_response,
235 .device_destroy = device_destroy_response,
236 .device_pause = visorchipset_device_pause_response,
237 .device_resume = device_resume_response,
240 /* info for /dev/visorchipset */
241 static dev_t MajorDev = -1; /**< indicates major num for device */
243 /* prototypes for attributes */
244 static ssize_t toolaction_show(struct device *dev,
245 struct device_attribute *attr, char *buf);
246 static ssize_t toolaction_store(struct device *dev,
247 struct device_attribute *attr, const char *buf, size_t count);
248 static DEVICE_ATTR_RW(toolaction);
250 static ssize_t boottotool_show(struct device *dev,
251 struct device_attribute *attr, char *buf);
252 static ssize_t boottotool_store(struct device *dev,
253 struct device_attribute *attr, const char *buf, size_t count);
254 static DEVICE_ATTR_RW(boottotool);
256 static ssize_t error_show(struct device *dev, struct device_attribute *attr,
258 static ssize_t error_store(struct device *dev, struct device_attribute *attr,
259 const char *buf, size_t count);
260 static DEVICE_ATTR_RW(error);
262 static ssize_t textid_show(struct device *dev, struct device_attribute *attr,
264 static ssize_t textid_store(struct device *dev, struct device_attribute *attr,
265 const char *buf, size_t count);
266 static DEVICE_ATTR_RW(textid);
268 static ssize_t remaining_steps_show(struct device *dev,
269 struct device_attribute *attr, char *buf);
270 static ssize_t remaining_steps_store(struct device *dev,
271 struct device_attribute *attr, const char *buf, size_t count);
272 static DEVICE_ATTR_RW(remaining_steps);
274 static ssize_t chipsetready_store(struct device *dev,
275 struct device_attribute *attr, const char *buf, size_t count);
276 static DEVICE_ATTR_WO(chipsetready);
278 static ssize_t devicedisabled_store(struct device *dev,
279 struct device_attribute *attr, const char *buf, size_t count);
280 static DEVICE_ATTR_WO(devicedisabled);
282 static ssize_t deviceenabled_store(struct device *dev,
283 struct device_attribute *attr, const char *buf, size_t count);
284 static DEVICE_ATTR_WO(deviceenabled);
286 static struct attribute *visorchipset_install_attrs[] = {
287 &dev_attr_toolaction.attr,
288 &dev_attr_boottotool.attr,
289 &dev_attr_error.attr,
290 &dev_attr_textid.attr,
291 &dev_attr_remaining_steps.attr,
295 static struct attribute_group visorchipset_install_group = {
297 .attrs = visorchipset_install_attrs
300 static struct attribute *visorchipset_guest_attrs[] = {
301 &dev_attr_chipsetready.attr,
305 static struct attribute_group visorchipset_guest_group = {
307 .attrs = visorchipset_guest_attrs
310 static struct attribute *visorchipset_parahotplug_attrs[] = {
311 &dev_attr_devicedisabled.attr,
312 &dev_attr_deviceenabled.attr,
316 static struct attribute_group visorchipset_parahotplug_group = {
317 .name = "parahotplug",
318 .attrs = visorchipset_parahotplug_attrs
321 static const struct attribute_group *visorchipset_dev_groups[] = {
322 &visorchipset_install_group,
323 &visorchipset_guest_group,
324 &visorchipset_parahotplug_group,
328 /* /sys/devices/platform/visorchipset */
329 static struct platform_device Visorchipset_platform_device = {
330 .name = "visorchipset",
332 .dev.groups = visorchipset_dev_groups,
335 /* Function prototypes */
336 static void controlvm_respond(struct controlvm_message_header *msgHdr,
338 static void controlvm_respond_chipset_init(
339 struct controlvm_message_header *msgHdr, int response,
340 enum ultra_chipset_feature features);
341 static void controlvm_respond_physdev_changestate(
342 struct controlvm_message_header *msgHdr, int response,
343 struct spar_segment_state state);
345 static ssize_t toolaction_show(struct device *dev,
346 struct device_attribute *attr,
351 visorchannel_read(controlvm_channel,
352 offsetof(struct spar_controlvm_channel_protocol,
353 tool_action), &toolAction, sizeof(u8));
354 return scnprintf(buf, PAGE_SIZE, "%u\n", toolAction);
357 static ssize_t toolaction_store(struct device *dev,
358 struct device_attribute *attr,
359 const char *buf, size_t count)
364 if (kstrtou8(buf, 10, &toolAction) != 0)
367 ret = visorchannel_write(controlvm_channel,
368 offsetof(struct spar_controlvm_channel_protocol, tool_action),
369 &toolAction, sizeof(u8));
376 static ssize_t boottotool_show(struct device *dev,
377 struct device_attribute *attr,
380 struct efi_spar_indication efiSparIndication;
382 visorchannel_read(controlvm_channel,
383 offsetof(struct spar_controlvm_channel_protocol,
384 efi_spar_ind), &efiSparIndication,
385 sizeof(struct efi_spar_indication));
386 return scnprintf(buf, PAGE_SIZE, "%u\n",
387 efiSparIndication.boot_to_tool);
390 static ssize_t boottotool_store(struct device *dev,
391 struct device_attribute *attr,
392 const char *buf, size_t count)
395 struct efi_spar_indication efiSparIndication;
397 if (kstrtoint(buf, 10, &val) != 0)
400 efiSparIndication.boot_to_tool = val;
401 ret = visorchannel_write(controlvm_channel,
402 offsetof(struct spar_controlvm_channel_protocol,
404 &(efiSparIndication),
405 sizeof(struct efi_spar_indication));
412 static ssize_t error_show(struct device *dev, struct device_attribute *attr,
417 visorchannel_read(controlvm_channel, offsetof(
418 struct spar_controlvm_channel_protocol, installation_error),
419 &error, sizeof(u32));
420 return scnprintf(buf, PAGE_SIZE, "%i\n", error);
423 static ssize_t error_store(struct device *dev, struct device_attribute *attr,
424 const char *buf, size_t count)
429 if (kstrtou32(buf, 10, &error) != 0)
432 ret = visorchannel_write(controlvm_channel,
433 offsetof(struct spar_controlvm_channel_protocol,
435 &error, sizeof(u32));
441 static ssize_t textid_show(struct device *dev, struct device_attribute *attr,
446 visorchannel_read(controlvm_channel, offsetof(
447 struct spar_controlvm_channel_protocol, installation_text_id),
448 &textId, sizeof(u32));
449 return scnprintf(buf, PAGE_SIZE, "%i\n", textId);
452 static ssize_t textid_store(struct device *dev, struct device_attribute *attr,
453 const char *buf, size_t count)
458 if (kstrtou32(buf, 10, &textId) != 0)
461 ret = visorchannel_write(controlvm_channel,
462 offsetof(struct spar_controlvm_channel_protocol,
463 installation_text_id),
464 &textId, sizeof(u32));
470 static ssize_t remaining_steps_show(struct device *dev,
471 struct device_attribute *attr, char *buf)
475 visorchannel_read(controlvm_channel,
476 offsetof(struct spar_controlvm_channel_protocol,
477 installation_remaining_steps),
480 return scnprintf(buf, PAGE_SIZE, "%hu\n", remainingSteps);
483 static ssize_t remaining_steps_store(struct device *dev,
484 struct device_attribute *attr, const char *buf, size_t count)
489 if (kstrtou16(buf, 10, &remainingSteps) != 0)
492 ret = visorchannel_write(controlvm_channel,
493 offsetof(struct spar_controlvm_channel_protocol,
494 installation_remaining_steps),
495 &remainingSteps, sizeof(u16));
502 bus_info_clear(void *v)
504 struct visorchipset_bus_info *p = (struct visorchipset_bus_info *) (v);
509 kfree(p->description);
510 p->description = NULL;
512 p->state.created = 0;
513 memset(p, 0, sizeof(struct visorchipset_bus_info));
517 dev_info_clear(void *v)
519 struct visorchipset_device_info *p =
520 (struct visorchipset_device_info *)(v);
522 p->state.created = 0;
523 memset(p, 0, sizeof(struct visorchipset_device_info));
527 check_chipset_events(void)
531 /* Check events to determine if response should be sent */
532 for (i = 0; i < MAX_CHIPSET_EVENTS; i++)
533 send_msg &= chipset_events[i];
538 clear_chipset_events(void)
541 /* Clear chipset_events */
542 for (i = 0; i < MAX_CHIPSET_EVENTS; i++)
543 chipset_events[i] = 0;
547 visorchipset_register_busdev_server(
548 struct visorchipset_busdev_notifiers *notifiers,
549 struct visorchipset_busdev_responders *responders,
550 struct ultra_vbus_deviceinfo *driver_info)
552 down(¬ifier_lock);
554 memset(&BusDev_Server_Notifiers, 0,
555 sizeof(BusDev_Server_Notifiers));
556 serverregistered = 0; /* clear flag */
558 BusDev_Server_Notifiers = *notifiers;
559 serverregistered = 1; /* set flag */
562 *responders = BusDev_Responders;
564 bus_device_info_init(driver_info, "chipset", "visorchipset",
569 EXPORT_SYMBOL_GPL(visorchipset_register_busdev_server);
572 visorchipset_register_busdev_client(
573 struct visorchipset_busdev_notifiers *notifiers,
574 struct visorchipset_busdev_responders *responders,
575 struct ultra_vbus_deviceinfo *driver_info)
577 down(¬ifier_lock);
579 memset(&BusDev_Client_Notifiers, 0,
580 sizeof(BusDev_Client_Notifiers));
581 clientregistered = 0; /* clear flag */
583 BusDev_Client_Notifiers = *notifiers;
584 clientregistered = 1; /* set flag */
587 *responders = BusDev_Responders;
589 bus_device_info_init(driver_info, "chipset(bolts)",
590 "visorchipset", VERSION, NULL);
593 EXPORT_SYMBOL_GPL(visorchipset_register_busdev_client);
596 cleanup_controlvm_structures(void)
598 struct visorchipset_bus_info *bi, *tmp_bi;
599 struct visorchipset_device_info *di, *tmp_di;
601 list_for_each_entry_safe(bi, tmp_bi, &bus_info_list, entry) {
603 list_del(&bi->entry);
607 list_for_each_entry_safe(di, tmp_di, &dev_info_list, entry) {
609 list_del(&di->entry);
615 chipset_init(struct controlvm_message *inmsg)
617 static int chipset_inited;
618 enum ultra_chipset_feature features = 0;
619 int rc = CONTROLVM_RESP_SUCCESS;
621 POSTCODE_LINUX_2(CHIPSET_INIT_ENTRY_PC, POSTCODE_SEVERITY_INFO);
622 if (chipset_inited) {
623 rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE;
627 POSTCODE_LINUX_2(CHIPSET_INIT_EXIT_PC, POSTCODE_SEVERITY_INFO);
629 /* Set features to indicate we support parahotplug (if Command
630 * also supports it). */
632 inmsg->cmd.init_chipset.
633 features & ULTRA_CHIPSET_FEATURE_PARA_HOTPLUG;
635 /* Set the "reply" bit so Command knows this is a
636 * features-aware driver. */
637 features |= ULTRA_CHIPSET_FEATURE_REPLY;
641 cleanup_controlvm_structures();
642 if (inmsg->hdr.flags.response_expected)
643 controlvm_respond_chipset_init(&inmsg->hdr, rc, features);
647 controlvm_init_response(struct controlvm_message *msg,
648 struct controlvm_message_header *msgHdr, int response)
650 memset(msg, 0, sizeof(struct controlvm_message));
651 memcpy(&msg->hdr, msgHdr, sizeof(struct controlvm_message_header));
652 msg->hdr.payload_bytes = 0;
653 msg->hdr.payload_vm_offset = 0;
654 msg->hdr.payload_max_bytes = 0;
656 msg->hdr.flags.failed = 1;
657 msg->hdr.completion_status = (u32) (-response);
662 controlvm_respond(struct controlvm_message_header *msgHdr, int response)
664 struct controlvm_message outmsg;
666 controlvm_init_response(&outmsg, msgHdr, response);
667 /* For DiagPool channel DEVICE_CHANGESTATE, we need to send
668 * back the deviceChangeState structure in the packet. */
669 if (msgHdr->id == CONTROLVM_DEVICE_CHANGESTATE &&
670 g_devicechangestate_packet.device_change_state.bus_no ==
672 g_devicechangestate_packet.device_change_state.dev_no ==
674 outmsg.cmd = g_devicechangestate_packet;
675 if (outmsg.hdr.flags.test_message == 1)
678 if (!visorchannel_signalinsert(controlvm_channel,
679 CONTROLVM_QUEUE_REQUEST, &outmsg)) {
685 controlvm_respond_chipset_init(struct controlvm_message_header *msgHdr,
687 enum ultra_chipset_feature features)
689 struct controlvm_message outmsg;
691 controlvm_init_response(&outmsg, msgHdr, response);
692 outmsg.cmd.init_chipset.features = features;
693 if (!visorchannel_signalinsert(controlvm_channel,
694 CONTROLVM_QUEUE_REQUEST, &outmsg)) {
699 static void controlvm_respond_physdev_changestate(
700 struct controlvm_message_header *msgHdr, int response,
701 struct spar_segment_state state)
703 struct controlvm_message outmsg;
705 controlvm_init_response(&outmsg, msgHdr, response);
706 outmsg.cmd.device_change_state.state = state;
707 outmsg.cmd.device_change_state.flags.phys_device = 1;
708 if (!visorchannel_signalinsert(controlvm_channel,
709 CONTROLVM_QUEUE_REQUEST, &outmsg)) {
715 visorchipset_save_message(struct controlvm_message *msg,
716 enum crash_obj_type type)
718 u32 crash_msg_offset;
721 /* get saved message count */
722 if (visorchannel_read(controlvm_channel,
723 offsetof(struct spar_controlvm_channel_protocol,
724 saved_crash_message_count),
725 &crash_msg_count, sizeof(u16)) < 0) {
726 POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC,
727 POSTCODE_SEVERITY_ERR);
731 if (crash_msg_count != CONTROLVM_CRASHMSG_MAX) {
732 POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC,
734 POSTCODE_SEVERITY_ERR);
738 /* get saved crash message offset */
739 if (visorchannel_read(controlvm_channel,
740 offsetof(struct spar_controlvm_channel_protocol,
741 saved_crash_message_offset),
742 &crash_msg_offset, sizeof(u32)) < 0) {
743 POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC,
744 POSTCODE_SEVERITY_ERR);
748 if (type == CRASH_BUS) {
749 if (visorchannel_write(controlvm_channel,
752 sizeof(struct controlvm_message)) < 0) {
753 POSTCODE_LINUX_2(SAVE_MSG_BUS_FAILURE_PC,
754 POSTCODE_SEVERITY_ERR);
758 if (visorchannel_write(controlvm_channel,
760 sizeof(struct controlvm_message), msg,
761 sizeof(struct controlvm_message)) < 0) {
762 POSTCODE_LINUX_2(SAVE_MSG_DEV_FAILURE_PC,
763 POSTCODE_SEVERITY_ERR);
768 EXPORT_SYMBOL_GPL(visorchipset_save_message);
771 bus_responder(enum controlvm_id cmd_id, ulong bus_no, int response)
773 struct visorchipset_bus_info *p = NULL;
774 BOOL need_clear = FALSE;
776 p = findbus(&bus_info_list, bus_no);
781 if ((cmd_id == CONTROLVM_BUS_CREATE) &&
782 (response != (-CONTROLVM_RESP_ERROR_ALREADY_DONE)))
783 /* undo the row we just created... */
784 delbusdevices(&dev_info_list, bus_no);
786 if (cmd_id == CONTROLVM_BUS_CREATE)
787 p->state.created = 1;
788 if (cmd_id == CONTROLVM_BUS_DESTROY)
792 if (p->pending_msg_hdr.id == CONTROLVM_INVALID)
793 return; /* no controlvm response needed */
794 if (p->pending_msg_hdr.id != (u32) cmd_id)
796 controlvm_respond(&p->pending_msg_hdr, response);
797 p->pending_msg_hdr.id = CONTROLVM_INVALID;
800 delbusdevices(&dev_info_list, bus_no);
805 device_changestate_responder(enum controlvm_id cmd_id,
806 ulong bus_no, ulong dev_no, int response,
807 struct spar_segment_state response_state)
809 struct visorchipset_device_info *p = NULL;
810 struct controlvm_message outmsg;
812 p = finddevice(&dev_info_list, bus_no, dev_no);
815 if (p->pending_msg_hdr.id == CONTROLVM_INVALID)
816 return; /* no controlvm response needed */
817 if (p->pending_msg_hdr.id != cmd_id)
820 controlvm_init_response(&outmsg, &p->pending_msg_hdr, response);
822 outmsg.cmd.device_change_state.bus_no = bus_no;
823 outmsg.cmd.device_change_state.dev_no = dev_no;
824 outmsg.cmd.device_change_state.state = response_state;
826 if (!visorchannel_signalinsert(controlvm_channel,
827 CONTROLVM_QUEUE_REQUEST, &outmsg))
830 p->pending_msg_hdr.id = CONTROLVM_INVALID;
834 device_responder(enum controlvm_id cmd_id, ulong bus_no, ulong dev_no,
837 struct visorchipset_device_info *p = NULL;
838 BOOL need_clear = FALSE;
840 p = finddevice(&dev_info_list, bus_no, dev_no);
844 if (cmd_id == CONTROLVM_DEVICE_CREATE)
845 p->state.created = 1;
846 if (cmd_id == CONTROLVM_DEVICE_DESTROY)
850 if (p->pending_msg_hdr.id == CONTROLVM_INVALID)
851 return; /* no controlvm response needed */
853 if (p->pending_msg_hdr.id != (u32) cmd_id)
856 controlvm_respond(&p->pending_msg_hdr, response);
857 p->pending_msg_hdr.id = CONTROLVM_INVALID;
863 bus_epilog(u32 bus_no,
864 u32 cmd, struct controlvm_message_header *msg_hdr,
865 int response, BOOL need_response)
867 BOOL notified = FALSE;
869 struct visorchipset_bus_info *bus_info = findbus(&bus_info_list,
876 memcpy(&bus_info->pending_msg_hdr, msg_hdr,
877 sizeof(struct controlvm_message_header));
879 bus_info->pending_msg_hdr.id = CONTROLVM_INVALID;
881 down(¬ifier_lock);
882 if (response == CONTROLVM_RESP_SUCCESS) {
884 case CONTROLVM_BUS_CREATE:
885 /* We can't tell from the bus_create
886 * information which of our 2 bus flavors the
887 * devices on this bus will ultimately end up.
888 * FORTUNATELY, it turns out it is harmless to
889 * send the bus_create to both of them. We can
890 * narrow things down a little bit, though,
891 * because we know: - BusDev_Server can handle
892 * either server or client devices
893 * - BusDev_Client can handle ONLY client
895 if (BusDev_Server_Notifiers.bus_create) {
896 (*BusDev_Server_Notifiers.bus_create) (bus_no);
899 if ((!bus_info->flags.server) /*client */ &&
900 BusDev_Client_Notifiers.bus_create) {
901 (*BusDev_Client_Notifiers.bus_create) (bus_no);
905 case CONTROLVM_BUS_DESTROY:
906 if (BusDev_Server_Notifiers.bus_destroy) {
907 (*BusDev_Server_Notifiers.bus_destroy) (bus_no);
910 if ((!bus_info->flags.server) /*client */ &&
911 BusDev_Client_Notifiers.bus_destroy) {
912 (*BusDev_Client_Notifiers.bus_destroy) (bus_no);
919 /* The callback function just called above is responsible
920 * for calling the appropriate visorchipset_busdev_responders
921 * function, which will call bus_responder()
925 bus_responder(cmd, bus_no, response);
930 device_epilog(u32 bus_no, u32 dev_no, struct spar_segment_state state, u32 cmd,
931 struct controlvm_message_header *msg_hdr, int response,
932 BOOL need_response, BOOL for_visorbus)
934 struct visorchipset_busdev_notifiers *notifiers = NULL;
935 BOOL notified = FALSE;
937 struct visorchipset_device_info *dev_info =
938 finddevice(&dev_info_list, bus_no, dev_no);
940 "SPARSP_DIAGPOOL_PAUSED_STATE = 1",
948 notifiers = &BusDev_Server_Notifiers;
950 notifiers = &BusDev_Client_Notifiers;
952 memcpy(&dev_info->pending_msg_hdr, msg_hdr,
953 sizeof(struct controlvm_message_header));
955 dev_info->pending_msg_hdr.id = CONTROLVM_INVALID;
957 down(¬ifier_lock);
960 case CONTROLVM_DEVICE_CREATE:
961 if (notifiers->device_create) {
962 (*notifiers->device_create) (bus_no, dev_no);
966 case CONTROLVM_DEVICE_CHANGESTATE:
967 /* ServerReady / ServerRunning / SegmentStateRunning */
968 if (state.alive == segment_state_running.alive &&
970 segment_state_running.operating) {
971 if (notifiers->device_resume) {
972 (*notifiers->device_resume) (bus_no,
977 /* ServerNotReady / ServerLost / SegmentStateStandby */
978 else if (state.alive == segment_state_standby.alive &&
980 segment_state_standby.operating) {
981 /* technically this is standby case
982 * where server is lost
984 if (notifiers->device_pause) {
985 (*notifiers->device_pause) (bus_no,
989 } else if (state.alive == segment_state_paused.alive &&
991 segment_state_paused.operating) {
992 /* this is lite pause where channel is
993 * still valid just 'pause' of it
995 if (bus_no == g_diagpool_bus_no &&
996 dev_no == g_diagpool_dev_no) {
997 /* this will trigger the
998 * diag_shutdown.sh script in
999 * the visorchipset hotplug */
1001 (&Visorchipset_platform_device.dev.
1002 kobj, KOBJ_ONLINE, envp);
1006 case CONTROLVM_DEVICE_DESTROY:
1007 if (notifiers->device_destroy) {
1008 (*notifiers->device_destroy) (bus_no, dev_no);
1015 /* The callback function just called above is responsible
1016 * for calling the appropriate visorchipset_busdev_responders
1017 * function, which will call device_responder()
1021 device_responder(cmd, bus_no, dev_no, response);
1026 bus_create(struct controlvm_message *inmsg)
1028 struct controlvm_message_packet *cmd = &inmsg->cmd;
1029 ulong busNo = cmd->create_bus.bus_no;
1030 int rc = CONTROLVM_RESP_SUCCESS;
1031 struct visorchipset_bus_info *pBusInfo = NULL;
1034 pBusInfo = findbus(&bus_info_list, busNo);
1035 if (pBusInfo && (pBusInfo->state.created == 1)) {
1036 POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo,
1037 POSTCODE_SEVERITY_ERR);
1038 rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE;
1041 pBusInfo = kzalloc(sizeof(struct visorchipset_bus_info), GFP_KERNEL);
1043 POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, busNo,
1044 POSTCODE_SEVERITY_ERR);
1045 rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED;
1049 INIT_LIST_HEAD(&pBusInfo->entry);
1050 pBusInfo->bus_no = busNo;
1051 pBusInfo->dev_no = cmd->create_bus.dev_count;
1053 POSTCODE_LINUX_3(BUS_CREATE_ENTRY_PC, busNo, POSTCODE_SEVERITY_INFO);
1055 if (inmsg->hdr.flags.test_message == 1)
1056 pBusInfo->chan_info.addr_type = ADDRTYPE_LOCALTEST;
1058 pBusInfo->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL;
1060 pBusInfo->flags.server = inmsg->hdr.flags.server;
1061 pBusInfo->chan_info.channel_addr = cmd->create_bus.channel_addr;
1062 pBusInfo->chan_info.n_channel_bytes = cmd->create_bus.channel_bytes;
1063 pBusInfo->chan_info.channel_type_uuid =
1064 cmd->create_bus.bus_data_type_uuid;
1065 pBusInfo->chan_info.channel_inst_uuid = cmd->create_bus.bus_inst_uuid;
1067 list_add(&pBusInfo->entry, &bus_info_list);
1069 POSTCODE_LINUX_3(BUS_CREATE_EXIT_PC, busNo, POSTCODE_SEVERITY_INFO);
1072 bus_epilog(busNo, CONTROLVM_BUS_CREATE, &inmsg->hdr,
1073 rc, inmsg->hdr.flags.response_expected == 1);
1077 bus_destroy(struct controlvm_message *inmsg)
1079 struct controlvm_message_packet *cmd = &inmsg->cmd;
1080 ulong busNo = cmd->destroy_bus.bus_no;
1081 struct visorchipset_bus_info *pBusInfo;
1082 int rc = CONTROLVM_RESP_SUCCESS;
1084 pBusInfo = findbus(&bus_info_list, busNo);
1086 rc = -CONTROLVM_RESP_ERROR_BUS_INVALID;
1089 if (pBusInfo->state.created == 0) {
1090 rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE;
1095 bus_epilog(busNo, CONTROLVM_BUS_DESTROY, &inmsg->hdr,
1096 rc, inmsg->hdr.flags.response_expected == 1);
1100 bus_configure(struct controlvm_message *inmsg,
1101 struct parser_context *parser_ctx)
1103 struct controlvm_message_packet *cmd = &inmsg->cmd;
1104 ulong busNo = cmd->configure_bus.bus_no;
1105 struct visorchipset_bus_info *pBusInfo = NULL;
1106 int rc = CONTROLVM_RESP_SUCCESS;
1109 busNo = cmd->configure_bus.bus_no;
1110 POSTCODE_LINUX_3(BUS_CONFIGURE_ENTRY_PC, busNo, POSTCODE_SEVERITY_INFO);
1112 pBusInfo = findbus(&bus_info_list, busNo);
1114 POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo,
1115 POSTCODE_SEVERITY_ERR);
1116 rc = -CONTROLVM_RESP_ERROR_BUS_INVALID;
1119 if (pBusInfo->state.created == 0) {
1120 POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo,
1121 POSTCODE_SEVERITY_ERR);
1122 rc = -CONTROLVM_RESP_ERROR_BUS_INVALID;
1125 /* TBD - add this check to other commands also... */
1126 if (pBusInfo->pending_msg_hdr.id != CONTROLVM_INVALID) {
1127 POSTCODE_LINUX_3(BUS_CONFIGURE_FAILURE_PC, busNo,
1128 POSTCODE_SEVERITY_ERR);
1129 rc = -CONTROLVM_RESP_ERROR_MESSAGE_ID_INVALID_FOR_CLIENT;
1133 pBusInfo->partition_handle = cmd->configure_bus.guest_handle;
1134 pBusInfo->partition_uuid = parser_id_get(parser_ctx);
1135 parser_param_start(parser_ctx, PARSERSTRING_NAME);
1136 pBusInfo->name = parser_string_get(parser_ctx);
1138 visorchannel_uuid_id(&pBusInfo->partition_uuid, s);
1139 POSTCODE_LINUX_3(BUS_CONFIGURE_EXIT_PC, busNo, POSTCODE_SEVERITY_INFO);
1141 bus_epilog(busNo, CONTROLVM_BUS_CONFIGURE, &inmsg->hdr,
1142 rc, inmsg->hdr.flags.response_expected == 1);
1146 my_device_create(struct controlvm_message *inmsg)
1148 struct controlvm_message_packet *cmd = &inmsg->cmd;
1149 ulong busNo = cmd->create_device.bus_no;
1150 ulong devNo = cmd->create_device.dev_no;
1151 struct visorchipset_device_info *pDevInfo = NULL;
1152 struct visorchipset_bus_info *pBusInfo = NULL;
1153 int rc = CONTROLVM_RESP_SUCCESS;
1155 pDevInfo = finddevice(&dev_info_list, busNo, devNo);
1156 if (pDevInfo && (pDevInfo->state.created == 1)) {
1157 POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo,
1158 POSTCODE_SEVERITY_ERR);
1159 rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE;
1162 pBusInfo = findbus(&bus_info_list, busNo);
1164 POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo,
1165 POSTCODE_SEVERITY_ERR);
1166 rc = -CONTROLVM_RESP_ERROR_BUS_INVALID;
1169 if (pBusInfo->state.created == 0) {
1170 POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo,
1171 POSTCODE_SEVERITY_ERR);
1172 rc = -CONTROLVM_RESP_ERROR_BUS_INVALID;
1175 pDevInfo = kzalloc(sizeof(struct visorchipset_device_info), GFP_KERNEL);
1177 POSTCODE_LINUX_4(DEVICE_CREATE_FAILURE_PC, devNo, busNo,
1178 POSTCODE_SEVERITY_ERR);
1179 rc = -CONTROLVM_RESP_ERROR_KMALLOC_FAILED;
1183 INIT_LIST_HEAD(&pDevInfo->entry);
1184 pDevInfo->bus_no = busNo;
1185 pDevInfo->dev_no = devNo;
1186 pDevInfo->dev_inst_uuid = cmd->create_device.dev_inst_uuid;
1187 POSTCODE_LINUX_4(DEVICE_CREATE_ENTRY_PC, devNo, busNo,
1188 POSTCODE_SEVERITY_INFO);
1190 if (inmsg->hdr.flags.test_message == 1)
1191 pDevInfo->chan_info.addr_type = ADDRTYPE_LOCALTEST;
1193 pDevInfo->chan_info.addr_type = ADDRTYPE_LOCALPHYSICAL;
1194 pDevInfo->chan_info.channel_addr = cmd->create_device.channel_addr;
1195 pDevInfo->chan_info.n_channel_bytes = cmd->create_device.channel_bytes;
1196 pDevInfo->chan_info.channel_type_uuid =
1197 cmd->create_device.data_type_uuid;
1198 pDevInfo->chan_info.intr = cmd->create_device.intr;
1199 list_add(&pDevInfo->entry, &dev_info_list);
1200 POSTCODE_LINUX_4(DEVICE_CREATE_EXIT_PC, devNo, busNo,
1201 POSTCODE_SEVERITY_INFO);
1203 /* get the bus and devNo for DiagPool channel */
1205 is_diagpool_channel(pDevInfo->chan_info.channel_type_uuid)) {
1206 g_diagpool_bus_no = busNo;
1207 g_diagpool_dev_no = devNo;
1209 device_epilog(busNo, devNo, segment_state_running,
1210 CONTROLVM_DEVICE_CREATE, &inmsg->hdr, rc,
1211 inmsg->hdr.flags.response_expected == 1,
1212 FOR_VISORBUS(pDevInfo->chan_info.channel_type_uuid));
1216 my_device_changestate(struct controlvm_message *inmsg)
1218 struct controlvm_message_packet *cmd = &inmsg->cmd;
1219 ulong busNo = cmd->device_change_state.bus_no;
1220 ulong devNo = cmd->device_change_state.dev_no;
1221 struct spar_segment_state state = cmd->device_change_state.state;
1222 struct visorchipset_device_info *pDevInfo = NULL;
1223 int rc = CONTROLVM_RESP_SUCCESS;
1225 pDevInfo = finddevice(&dev_info_list, busNo, devNo);
1227 POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, devNo, busNo,
1228 POSTCODE_SEVERITY_ERR);
1229 rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID;
1232 if (pDevInfo->state.created == 0) {
1233 POSTCODE_LINUX_4(DEVICE_CHANGESTATE_FAILURE_PC, devNo, busNo,
1234 POSTCODE_SEVERITY_ERR);
1235 rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID;
1238 if ((rc >= CONTROLVM_RESP_SUCCESS) && pDevInfo)
1239 device_epilog(busNo, devNo, state, CONTROLVM_DEVICE_CHANGESTATE,
1241 inmsg->hdr.flags.response_expected == 1,
1243 pDevInfo->chan_info.channel_type_uuid));
1247 my_device_destroy(struct controlvm_message *inmsg)
1249 struct controlvm_message_packet *cmd = &inmsg->cmd;
1250 ulong busNo = cmd->destroy_device.bus_no;
1251 ulong devNo = cmd->destroy_device.dev_no;
1252 struct visorchipset_device_info *pDevInfo = NULL;
1253 int rc = CONTROLVM_RESP_SUCCESS;
1255 pDevInfo = finddevice(&dev_info_list, busNo, devNo);
1257 rc = -CONTROLVM_RESP_ERROR_DEVICE_INVALID;
1260 if (pDevInfo->state.created == 0) {
1261 rc = -CONTROLVM_RESP_ERROR_ALREADY_DONE;
1265 if ((rc >= CONTROLVM_RESP_SUCCESS) && pDevInfo)
1266 device_epilog(busNo, devNo, segment_state_running,
1267 CONTROLVM_DEVICE_DESTROY, &inmsg->hdr, rc,
1268 inmsg->hdr.flags.response_expected == 1,
1270 pDevInfo->chan_info.channel_type_uuid));
1273 /* When provided with the physical address of the controlvm channel
1274 * (phys_addr), the offset to the payload area we need to manage
1275 * (offset), and the size of this payload area (bytes), fills in the
1276 * controlvm_payload_info struct. Returns TRUE for success or FALSE
1280 initialize_controlvm_payload_info(HOSTADDRESS phys_addr, u64 offset, u32 bytes,
1281 struct controlvm_payload_info *info)
1283 u8 __iomem *payload = NULL;
1284 int rc = CONTROLVM_RESP_SUCCESS;
1287 rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID;
1290 memset(info, 0, sizeof(struct controlvm_payload_info));
1291 if ((offset == 0) || (bytes == 0)) {
1292 rc = -CONTROLVM_RESP_ERROR_PAYLOAD_INVALID;
1295 payload = ioremap_cache(phys_addr + offset, bytes);
1297 rc = -CONTROLVM_RESP_ERROR_IOREMAP_FAILED;
1301 info->offset = offset;
1302 info->bytes = bytes;
1303 info->ptr = payload;
1307 if (payload != NULL) {
1316 destroy_controlvm_payload_info(struct controlvm_payload_info *info)
1318 if (info->ptr != NULL) {
1322 memset(info, 0, sizeof(struct controlvm_payload_info));
1326 initialize_controlvm_payload(void)
1328 HOSTADDRESS phys_addr = visorchannel_get_physaddr(controlvm_channel);
1329 u64 payloadOffset = 0;
1330 u32 payloadBytes = 0;
1332 if (visorchannel_read(controlvm_channel,
1333 offsetof(struct spar_controlvm_channel_protocol,
1334 request_payload_offset),
1335 &payloadOffset, sizeof(payloadOffset)) < 0) {
1336 POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC,
1337 POSTCODE_SEVERITY_ERR);
1340 if (visorchannel_read(controlvm_channel,
1341 offsetof(struct spar_controlvm_channel_protocol,
1342 request_payload_bytes),
1343 &payloadBytes, sizeof(payloadBytes)) < 0) {
1344 POSTCODE_LINUX_2(CONTROLVM_INIT_FAILURE_PC,
1345 POSTCODE_SEVERITY_ERR);
1348 initialize_controlvm_payload_info(phys_addr,
1349 payloadOffset, payloadBytes,
1350 &controlvm_payload_info);
1353 /* Send ACTION=online for DEVPATH=/sys/devices/platform/visorchipset.
1354 * Returns CONTROLVM_RESP_xxx code.
1357 visorchipset_chipset_ready(void)
1359 kobject_uevent(&Visorchipset_platform_device.dev.kobj, KOBJ_ONLINE);
1360 return CONTROLVM_RESP_SUCCESS;
1362 EXPORT_SYMBOL_GPL(visorchipset_chipset_ready);
1365 visorchipset_chipset_selftest(void)
1367 char env_selftest[20];
1368 char *envp[] = { env_selftest, NULL };
1370 sprintf(env_selftest, "SPARSP_SELFTEST=%d", 1);
1371 kobject_uevent_env(&Visorchipset_platform_device.dev.kobj, KOBJ_CHANGE,
1373 return CONTROLVM_RESP_SUCCESS;
1375 EXPORT_SYMBOL_GPL(visorchipset_chipset_selftest);
1377 /* Send ACTION=offline for DEVPATH=/sys/devices/platform/visorchipset.
1378 * Returns CONTROLVM_RESP_xxx code.
1381 visorchipset_chipset_notready(void)
1383 kobject_uevent(&Visorchipset_platform_device.dev.kobj, KOBJ_OFFLINE);
1384 return CONTROLVM_RESP_SUCCESS;
1386 EXPORT_SYMBOL_GPL(visorchipset_chipset_notready);
1389 chipset_ready(struct controlvm_message_header *msgHdr)
1391 int rc = visorchipset_chipset_ready();
1393 if (rc != CONTROLVM_RESP_SUCCESS)
1395 if (msgHdr->flags.response_expected && !visorchipset_holdchipsetready)
1396 controlvm_respond(msgHdr, rc);
1397 if (msgHdr->flags.response_expected && visorchipset_holdchipsetready) {
1398 /* Send CHIPSET_READY response when all modules have been loaded
1399 * and disks mounted for the partition
1401 g_chipset_msg_hdr = *msgHdr;
1406 chipset_selftest(struct controlvm_message_header *msgHdr)
1408 int rc = visorchipset_chipset_selftest();
1410 if (rc != CONTROLVM_RESP_SUCCESS)
1412 if (msgHdr->flags.response_expected)
1413 controlvm_respond(msgHdr, rc);
1417 chipset_notready(struct controlvm_message_header *msgHdr)
1419 int rc = visorchipset_chipset_notready();
1421 if (rc != CONTROLVM_RESP_SUCCESS)
1423 if (msgHdr->flags.response_expected)
1424 controlvm_respond(msgHdr, rc);
1427 /* This is your "one-stop" shop for grabbing the next message from the
1428 * CONTROLVM_QUEUE_EVENT queue in the controlvm channel.
1431 read_controlvm_event(struct controlvm_message *msg)
1433 if (visorchannel_signalremove(controlvm_channel,
1434 CONTROLVM_QUEUE_EVENT, msg)) {
1436 if (msg->hdr.flags.test_message == 1)
1444 * The general parahotplug flow works as follows. The visorchipset
1445 * driver receives a DEVICE_CHANGESTATE message from Command
1446 * specifying a physical device to enable or disable. The CONTROLVM
1447 * message handler calls parahotplug_process_message, which then adds
1448 * the message to a global list and kicks off a udev event which
1449 * causes a user level script to enable or disable the specified
1450 * device. The udev script then writes to
1451 * /proc/visorchipset/parahotplug, which causes parahotplug_proc_write
1452 * to get called, at which point the appropriate CONTROLVM message is
1453 * retrieved from the list and responded to.
1456 #define PARAHOTPLUG_TIMEOUT_MS 2000
1459 * Generate unique int to match an outstanding CONTROLVM message with a
1460 * udev script /proc response
1463 parahotplug_next_id(void)
1465 static atomic_t id = ATOMIC_INIT(0);
1467 return atomic_inc_return(&id);
1471 * Returns the time (in jiffies) when a CONTROLVM message on the list
1472 * should expire -- PARAHOTPLUG_TIMEOUT_MS in the future
1474 static unsigned long
1475 parahotplug_next_expiration(void)
1477 return jiffies + msecs_to_jiffies(PARAHOTPLUG_TIMEOUT_MS);
1481 * Create a parahotplug_request, which is basically a wrapper for a
1482 * CONTROLVM_MESSAGE that we can stick on a list
1484 static struct parahotplug_request *
1485 parahotplug_request_create(struct controlvm_message *msg)
1487 struct parahotplug_request *req;
1489 req = kmalloc(sizeof(*req), GFP_KERNEL|__GFP_NORETRY);
1493 req->id = parahotplug_next_id();
1494 req->expiration = parahotplug_next_expiration();
1501 * Free a parahotplug_request.
1504 parahotplug_request_destroy(struct parahotplug_request *req)
1510 * Cause uevent to run the user level script to do the disable/enable
1511 * specified in (the CONTROLVM message in) the specified
1512 * parahotplug_request
1515 parahotplug_request_kickoff(struct parahotplug_request *req)
1517 struct controlvm_message_packet *cmd = &req->msg.cmd;
1518 char env_cmd[40], env_id[40], env_state[40], env_bus[40], env_dev[40],
1521 env_cmd, env_id, env_state, env_bus, env_dev, env_func, NULL
1524 sprintf(env_cmd, "SPAR_PARAHOTPLUG=1");
1525 sprintf(env_id, "SPAR_PARAHOTPLUG_ID=%d", req->id);
1526 sprintf(env_state, "SPAR_PARAHOTPLUG_STATE=%d",
1527 cmd->device_change_state.state.active);
1528 sprintf(env_bus, "SPAR_PARAHOTPLUG_BUS=%d",
1529 cmd->device_change_state.bus_no);
1530 sprintf(env_dev, "SPAR_PARAHOTPLUG_DEVICE=%d",
1531 cmd->device_change_state.dev_no >> 3);
1532 sprintf(env_func, "SPAR_PARAHOTPLUG_FUNCTION=%d",
1533 cmd->device_change_state.dev_no & 0x7);
1535 kobject_uevent_env(&Visorchipset_platform_device.dev.kobj, KOBJ_CHANGE,
1540 * Remove any request from the list that's been on there too long and
1541 * respond with an error.
1544 parahotplug_process_list(void)
1546 struct list_head *pos = NULL;
1547 struct list_head *tmp = NULL;
1549 spin_lock(&Parahotplug_request_list_lock);
1551 list_for_each_safe(pos, tmp, &Parahotplug_request_list) {
1552 struct parahotplug_request *req =
1553 list_entry(pos, struct parahotplug_request, list);
1554 if (time_after_eq(jiffies, req->expiration)) {
1556 if (req->msg.hdr.flags.response_expected)
1557 controlvm_respond_physdev_changestate(
1559 CONTROLVM_RESP_ERROR_DEVICE_UDEV_TIMEOUT,
1560 req->msg.cmd.device_change_state.state);
1561 parahotplug_request_destroy(req);
1565 spin_unlock(&Parahotplug_request_list_lock);
1569 * Called from the /proc handler, which means the user script has
1570 * finished the enable/disable. Find the matching identifier, and
1571 * respond to the CONTROLVM message with success.
1574 parahotplug_request_complete(int id, u16 active)
1576 struct list_head *pos = NULL;
1577 struct list_head *tmp = NULL;
1579 spin_lock(&Parahotplug_request_list_lock);
1581 /* Look for a request matching "id". */
1582 list_for_each_safe(pos, tmp, &Parahotplug_request_list) {
1583 struct parahotplug_request *req =
1584 list_entry(pos, struct parahotplug_request, list);
1585 if (req->id == id) {
1586 /* Found a match. Remove it from the list and
1590 spin_unlock(&Parahotplug_request_list_lock);
1591 req->msg.cmd.device_change_state.state.active = active;
1592 if (req->msg.hdr.flags.response_expected)
1593 controlvm_respond_physdev_changestate(
1594 &req->msg.hdr, CONTROLVM_RESP_SUCCESS,
1595 req->msg.cmd.device_change_state.state);
1596 parahotplug_request_destroy(req);
1601 spin_unlock(&Parahotplug_request_list_lock);
1606 * Enables or disables a PCI device by kicking off a udev script
1609 parahotplug_process_message(struct controlvm_message *inmsg)
1611 struct parahotplug_request *req;
1613 req = parahotplug_request_create(inmsg);
1618 if (inmsg->cmd.device_change_state.state.active) {
1619 /* For enable messages, just respond with success
1620 * right away. This is a bit of a hack, but there are
1621 * issues with the early enable messages we get (with
1622 * either the udev script not detecting that the device
1623 * is up, or not getting called at all). Fortunately
1624 * the messages that get lost don't matter anyway, as
1625 * devices are automatically enabled at
1628 parahotplug_request_kickoff(req);
1629 controlvm_respond_physdev_changestate(&inmsg->hdr,
1630 CONTROLVM_RESP_SUCCESS, inmsg->cmd.
1631 device_change_state.state);
1632 parahotplug_request_destroy(req);
1634 /* For disable messages, add the request to the
1635 * request list before kicking off the udev script. It
1636 * won't get responded to until the script has
1637 * indicated it's done.
1639 spin_lock(&Parahotplug_request_list_lock);
1640 list_add_tail(&(req->list), &Parahotplug_request_list);
1641 spin_unlock(&Parahotplug_request_list_lock);
1643 parahotplug_request_kickoff(req);
1647 /* Process a controlvm message.
1649 * FALSE - this function will return FALSE only in the case where the
1650 * controlvm message was NOT processed, but processing must be
1651 * retried before reading the next controlvm message; a
1652 * scenario where this can occur is when we need to throttle
1653 * the allocation of memory in which to copy out controlvm
1655 * TRUE - processing of the controlvm message completed,
1656 * either successfully or with an error.
1659 handle_command(struct controlvm_message inmsg, HOSTADDRESS channel_addr)
1661 struct controlvm_message_packet *cmd = &inmsg.cmd;
1662 u64 parametersAddr = 0;
1663 u32 parametersBytes = 0;
1664 struct parser_context *parser_ctx = NULL;
1665 BOOL isLocalAddr = FALSE;
1666 struct controlvm_message ackmsg;
1668 /* create parsing context if necessary */
1669 isLocalAddr = (inmsg.hdr.flags.test_message == 1);
1670 if (channel_addr == 0)
1672 parametersAddr = channel_addr + inmsg.hdr.payload_vm_offset;
1673 parametersBytes = inmsg.hdr.payload_bytes;
1675 /* Parameter and channel addresses within test messages actually lie
1676 * within our OS-controlled memory. We need to know that, because it
1677 * makes a difference in how we compute the virtual address.
1679 if (parametersAddr != 0 && parametersBytes != 0) {
1683 parser_init_byte_stream(parametersAddr, parametersBytes,
1684 isLocalAddr, &retry);
1685 if (!parser_ctx && retry)
1690 controlvm_init_response(&ackmsg, &inmsg.hdr,
1691 CONTROLVM_RESP_SUCCESS);
1692 if (controlvm_channel)
1693 visorchannel_signalinsert(controlvm_channel,
1694 CONTROLVM_QUEUE_ACK,
1697 switch (inmsg.hdr.id) {
1698 case CONTROLVM_CHIPSET_INIT:
1699 chipset_init(&inmsg);
1701 case CONTROLVM_BUS_CREATE:
1704 case CONTROLVM_BUS_DESTROY:
1705 bus_destroy(&inmsg);
1707 case CONTROLVM_BUS_CONFIGURE:
1708 bus_configure(&inmsg, parser_ctx);
1710 case CONTROLVM_DEVICE_CREATE:
1711 my_device_create(&inmsg);
1713 case CONTROLVM_DEVICE_CHANGESTATE:
1714 if (cmd->device_change_state.flags.phys_device) {
1715 parahotplug_process_message(&inmsg);
1717 /* save the hdr and cmd structures for later use */
1718 /* when sending back the response to Command */
1719 my_device_changestate(&inmsg);
1720 g_diag_msg_hdr = inmsg.hdr;
1721 g_devicechangestate_packet = inmsg.cmd;
1725 case CONTROLVM_DEVICE_DESTROY:
1726 my_device_destroy(&inmsg);
1728 case CONTROLVM_DEVICE_CONFIGURE:
1729 /* no op for now, just send a respond that we passed */
1730 if (inmsg.hdr.flags.response_expected)
1731 controlvm_respond(&inmsg.hdr, CONTROLVM_RESP_SUCCESS);
1733 case CONTROLVM_CHIPSET_READY:
1734 chipset_ready(&inmsg.hdr);
1736 case CONTROLVM_CHIPSET_SELFTEST:
1737 chipset_selftest(&inmsg.hdr);
1739 case CONTROLVM_CHIPSET_STOP:
1740 chipset_notready(&inmsg.hdr);
1743 if (inmsg.hdr.flags.response_expected)
1744 controlvm_respond(&inmsg.hdr,
1745 -CONTROLVM_RESP_ERROR_MESSAGE_ID_UNKNOWN);
1750 parser_done(parser_ctx);
1756 static HOSTADDRESS controlvm_get_channel_address(void)
1761 if (!VMCALL_SUCCESSFUL(issue_vmcall_io_controlvm_addr(&addr, &size)))
1768 controlvm_periodic_work(struct work_struct *work)
1770 struct controlvm_message inmsg;
1771 BOOL gotACommand = FALSE;
1772 BOOL handle_command_failed = FALSE;
1773 static u64 Poll_Count;
1775 /* make sure visorbus server is registered for controlvm callbacks */
1776 if (visorchipset_serverregwait && !serverregistered)
1778 /* make sure visorclientbus server is regsitered for controlvm
1781 if (visorchipset_clientregwait && !clientregistered)
1785 if (Poll_Count >= 250)
1790 /* Check events to determine if response to CHIPSET_READY
1793 if (visorchipset_holdchipsetready &&
1794 (g_chipset_msg_hdr.id != CONTROLVM_INVALID)) {
1795 if (check_chipset_events() == 1) {
1796 controlvm_respond(&g_chipset_msg_hdr, 0);
1797 clear_chipset_events();
1798 memset(&g_chipset_msg_hdr, 0,
1799 sizeof(struct controlvm_message_header));
1803 while (visorchannel_signalremove(controlvm_channel,
1804 CONTROLVM_QUEUE_RESPONSE,
1808 if (ControlVm_Pending_Msg_Valid) {
1809 /* we throttled processing of a prior
1810 * msg, so try to process it again
1811 * rather than reading a new one
1813 inmsg = ControlVm_Pending_Msg;
1814 ControlVm_Pending_Msg_Valid = FALSE;
1817 gotACommand = read_controlvm_event(&inmsg);
1820 handle_command_failed = FALSE;
1821 while (gotACommand && (!handle_command_failed)) {
1822 most_recent_message_jiffies = jiffies;
1823 if (handle_command(inmsg,
1824 visorchannel_get_physaddr
1825 (controlvm_channel)))
1826 gotACommand = read_controlvm_event(&inmsg);
1828 /* this is a scenario where throttling
1829 * is required, but probably NOT an
1830 * error...; we stash the current
1831 * controlvm msg so we will attempt to
1832 * reprocess it on our next loop
1834 handle_command_failed = TRUE;
1835 ControlVm_Pending_Msg = inmsg;
1836 ControlVm_Pending_Msg_Valid = TRUE;
1840 /* parahotplug_worker */
1841 parahotplug_process_list();
1845 if (time_after(jiffies,
1846 most_recent_message_jiffies + (HZ * MIN_IDLE_SECONDS))) {
1847 /* it's been longer than MIN_IDLE_SECONDS since we
1848 * processed our last controlvm message; slow down the
1851 if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_SLOW)
1852 poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW;
1854 if (poll_jiffies != POLLJIFFIES_CONTROLVMCHANNEL_FAST)
1855 poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST;
1858 queue_delayed_work(periodic_controlvm_workqueue,
1859 &periodic_controlvm_work, poll_jiffies);
1863 setup_crash_devices_work_queue(struct work_struct *work)
1865 struct controlvm_message localCrashCreateBusMsg;
1866 struct controlvm_message localCrashCreateDevMsg;
1867 struct controlvm_message msg;
1868 u32 localSavedCrashMsgOffset;
1869 u16 localSavedCrashMsgCount;
1871 /* make sure visorbus server is registered for controlvm callbacks */
1872 if (visorchipset_serverregwait && !serverregistered)
1875 /* make sure visorclientbus server is regsitered for controlvm
1878 if (visorchipset_clientregwait && !clientregistered)
1881 POSTCODE_LINUX_2(CRASH_DEV_ENTRY_PC, POSTCODE_SEVERITY_INFO);
1883 /* send init chipset msg */
1884 msg.hdr.id = CONTROLVM_CHIPSET_INIT;
1885 msg.cmd.init_chipset.bus_count = 23;
1886 msg.cmd.init_chipset.switch_count = 0;
1890 /* get saved message count */
1891 if (visorchannel_read(controlvm_channel,
1892 offsetof(struct spar_controlvm_channel_protocol,
1893 saved_crash_message_count),
1894 &localSavedCrashMsgCount, sizeof(u16)) < 0) {
1895 POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC,
1896 POSTCODE_SEVERITY_ERR);
1900 if (localSavedCrashMsgCount != CONTROLVM_CRASHMSG_MAX) {
1901 POSTCODE_LINUX_3(CRASH_DEV_COUNT_FAILURE_PC,
1902 localSavedCrashMsgCount,
1903 POSTCODE_SEVERITY_ERR);
1907 /* get saved crash message offset */
1908 if (visorchannel_read(controlvm_channel,
1909 offsetof(struct spar_controlvm_channel_protocol,
1910 saved_crash_message_offset),
1911 &localSavedCrashMsgOffset, sizeof(u32)) < 0) {
1912 POSTCODE_LINUX_2(CRASH_DEV_CTRL_RD_FAILURE_PC,
1913 POSTCODE_SEVERITY_ERR);
1917 /* read create device message for storage bus offset */
1918 if (visorchannel_read(controlvm_channel,
1919 localSavedCrashMsgOffset,
1920 &localCrashCreateBusMsg,
1921 sizeof(struct controlvm_message)) < 0) {
1922 POSTCODE_LINUX_2(CRASH_DEV_RD_BUS_FAIULRE_PC,
1923 POSTCODE_SEVERITY_ERR);
1927 /* read create device message for storage device */
1928 if (visorchannel_read(controlvm_channel,
1929 localSavedCrashMsgOffset +
1930 sizeof(struct controlvm_message),
1931 &localCrashCreateDevMsg,
1932 sizeof(struct controlvm_message)) < 0) {
1933 POSTCODE_LINUX_2(CRASH_DEV_RD_DEV_FAIULRE_PC,
1934 POSTCODE_SEVERITY_ERR);
1938 /* reuse IOVM create bus message */
1939 if (localCrashCreateBusMsg.cmd.create_bus.channel_addr != 0)
1940 bus_create(&localCrashCreateBusMsg);
1942 POSTCODE_LINUX_2(CRASH_DEV_BUS_NULL_FAILURE_PC,
1943 POSTCODE_SEVERITY_ERR);
1947 /* reuse create device message for storage device */
1948 if (localCrashCreateDevMsg.cmd.create_device.channel_addr != 0)
1949 my_device_create(&localCrashCreateDevMsg);
1951 POSTCODE_LINUX_2(CRASH_DEV_DEV_NULL_FAILURE_PC,
1952 POSTCODE_SEVERITY_ERR);
1955 POSTCODE_LINUX_2(CRASH_DEV_EXIT_PC, POSTCODE_SEVERITY_INFO);
1960 poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW;
1962 queue_delayed_work(periodic_controlvm_workqueue,
1963 &periodic_controlvm_work, poll_jiffies);
1967 bus_create_response(ulong busNo, int response)
1969 bus_responder(CONTROLVM_BUS_CREATE, busNo, response);
1973 bus_destroy_response(ulong busNo, int response)
1975 bus_responder(CONTROLVM_BUS_DESTROY, busNo, response);
1979 device_create_response(ulong busNo, ulong devNo, int response)
1981 device_responder(CONTROLVM_DEVICE_CREATE, busNo, devNo, response);
1985 device_destroy_response(ulong busNo, ulong devNo, int response)
1987 device_responder(CONTROLVM_DEVICE_DESTROY, busNo, devNo, response);
1991 visorchipset_device_pause_response(ulong bus_no, ulong dev_no, int response)
1993 device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE,
1994 bus_no, dev_no, response,
1995 segment_state_standby);
1997 EXPORT_SYMBOL_GPL(visorchipset_device_pause_response);
2000 device_resume_response(ulong busNo, ulong devNo, int response)
2002 device_changestate_responder(CONTROLVM_DEVICE_CHANGESTATE,
2003 busNo, devNo, response,
2004 segment_state_running);
2008 visorchipset_get_bus_info(ulong bus_no, struct visorchipset_bus_info *bus_info)
2010 void *p = findbus(&bus_info_list, bus_no);
2014 memcpy(bus_info, p, sizeof(struct visorchipset_bus_info));
2017 EXPORT_SYMBOL_GPL(visorchipset_get_bus_info);
2020 visorchipset_set_bus_context(ulong bus_no, void *context)
2022 struct visorchipset_bus_info *p = findbus(&bus_info_list, bus_no);
2026 p->bus_driver_context = context;
2029 EXPORT_SYMBOL_GPL(visorchipset_set_bus_context);
2032 visorchipset_get_device_info(ulong bus_no, ulong dev_no,
2033 struct visorchipset_device_info *dev_info)
2035 void *p = finddevice(&dev_info_list, bus_no, dev_no);
2039 memcpy(dev_info, p, sizeof(struct visorchipset_device_info));
2042 EXPORT_SYMBOL_GPL(visorchipset_get_device_info);
2045 visorchipset_set_device_context(ulong bus_no, ulong dev_no, void *context)
2047 struct visorchipset_device_info *p =
2048 finddevice(&dev_info_list, bus_no, dev_no);
2052 p->bus_driver_context = context;
2055 EXPORT_SYMBOL_GPL(visorchipset_set_device_context);
2057 /* Generic wrapper function for allocating memory from a kmem_cache pool.
2060 visorchipset_cache_alloc(struct kmem_cache *pool, BOOL ok_to_block,
2070 /* __GFP_NORETRY means "ok to fail", meaning
2071 * kmem_cache_alloc() can return NULL, implying the caller CAN
2072 * cope with failure. If you do NOT specify __GFP_NORETRY,
2073 * Linux will go to extreme measures to get memory for you
2074 * (like, invoke oom killer), which will probably cripple the
2077 gfp |= __GFP_NORETRY;
2078 p = kmem_cache_alloc(pool, gfp);
2082 atomic_inc(&Visorchipset_cache_buffers_in_use);
2086 /* Generic wrapper function for freeing memory from a kmem_cache pool.
2089 visorchipset_cache_free(struct kmem_cache *pool, void *p, char *fn, int ln)
2094 atomic_dec(&Visorchipset_cache_buffers_in_use);
2095 kmem_cache_free(pool, p);
2098 static ssize_t chipsetready_store(struct device *dev,
2099 struct device_attribute *attr, const char *buf, size_t count)
2103 if (sscanf(buf, "%63s", msgtype) != 1)
2106 if (strcmp(msgtype, "CALLHOMEDISK_MOUNTED") == 0) {
2107 chipset_events[0] = 1;
2109 } else if (strcmp(msgtype, "MODULES_LOADED") == 0) {
2110 chipset_events[1] = 1;
2116 /* The parahotplug/devicedisabled interface gets called by our support script
2117 * when an SR-IOV device has been shut down. The ID is passed to the script
2118 * and then passed back when the device has been removed.
2120 static ssize_t devicedisabled_store(struct device *dev,
2121 struct device_attribute *attr, const char *buf, size_t count)
2125 if (kstrtouint(buf, 10, &id) != 0)
2128 parahotplug_request_complete(id, 0);
2132 /* The parahotplug/deviceenabled interface gets called by our support script
2133 * when an SR-IOV device has been recovered. The ID is passed to the script
2134 * and then passed back when the device has been brought back up.
2136 static ssize_t deviceenabled_store(struct device *dev,
2137 struct device_attribute *attr, const char *buf, size_t count)
2141 if (kstrtouint(buf, 10, &id) != 0)
2144 parahotplug_request_complete(id, 1);
2149 visorchipset_init(void)
2154 if (!unisys_spar_platform)
2157 memset(&BusDev_Server_Notifiers, 0, sizeof(BusDev_Server_Notifiers));
2158 memset(&BusDev_Client_Notifiers, 0, sizeof(BusDev_Client_Notifiers));
2159 memset(&controlvm_payload_info, 0, sizeof(controlvm_payload_info));
2160 memset(&livedump_info, 0, sizeof(livedump_info));
2161 atomic_set(&livedump_info.buffers_in_use, 0);
2163 if (visorchipset_testvnic) {
2164 POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, x, DIAG_SEVERITY_ERR);
2169 addr = controlvm_get_channel_address();
2172 visorchannel_create_with_lock
2174 sizeof(struct spar_controlvm_channel_protocol),
2175 spar_controlvm_channel_protocol_uuid);
2176 if (SPAR_CONTROLVM_CHANNEL_OK_CLIENT(
2177 visorchannel_get_header(controlvm_channel))) {
2178 initialize_controlvm_payload();
2180 visorchannel_destroy(controlvm_channel);
2181 controlvm_channel = NULL;
2188 MajorDev = MKDEV(visorchipset_major, 0);
2189 rc = visorchipset_file_init(MajorDev, &controlvm_channel);
2191 POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC, DIAG_SEVERITY_ERR);
2195 memset(&g_diag_msg_hdr, 0, sizeof(struct controlvm_message_header));
2197 memset(&g_chipset_msg_hdr, 0, sizeof(struct controlvm_message_header));
2199 memset(&g_del_dump_msg_hdr, 0, sizeof(struct controlvm_message_header));
2201 Putfile_buffer_list_pool =
2202 kmem_cache_create(Putfile_buffer_list_pool_name,
2203 sizeof(struct putfile_buffer_entry),
2204 0, SLAB_HWCACHE_ALIGN, NULL);
2205 if (!Putfile_buffer_list_pool) {
2206 POSTCODE_LINUX_2(CHIPSET_INIT_FAILURE_PC, DIAG_SEVERITY_ERR);
2210 if (!visorchipset_disable_controlvm) {
2211 /* if booting in a crash kernel */
2212 if (visorchipset_crash_kernel)
2213 INIT_DELAYED_WORK(&periodic_controlvm_work,
2214 setup_crash_devices_work_queue);
2216 INIT_DELAYED_WORK(&periodic_controlvm_work,
2217 controlvm_periodic_work);
2218 periodic_controlvm_workqueue =
2219 create_singlethread_workqueue("visorchipset_controlvm");
2221 if (!periodic_controlvm_workqueue) {
2222 POSTCODE_LINUX_2(CREATE_WORKQUEUE_FAILED_PC,
2227 most_recent_message_jiffies = jiffies;
2228 poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_FAST;
2229 rc = queue_delayed_work(periodic_controlvm_workqueue,
2230 &periodic_controlvm_work, poll_jiffies);
2232 POSTCODE_LINUX_2(QUEUE_DELAYED_WORK_PC,
2238 Visorchipset_platform_device.dev.devt = MajorDev;
2239 if (platform_device_register(&Visorchipset_platform_device) < 0) {
2240 POSTCODE_LINUX_2(DEVICE_REGISTER_FAILURE_PC, DIAG_SEVERITY_ERR);
2244 POSTCODE_LINUX_2(CHIPSET_INIT_SUCCESS_PC, POSTCODE_SEVERITY_INFO);
2248 POSTCODE_LINUX_3(CHIPSET_INIT_FAILURE_PC, rc,
2249 POSTCODE_SEVERITY_ERR);
2255 visorchipset_exit(void)
2257 POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO);
2259 if (visorchipset_disable_controlvm) {
2262 cancel_delayed_work(&periodic_controlvm_work);
2263 flush_workqueue(periodic_controlvm_workqueue);
2264 destroy_workqueue(periodic_controlvm_workqueue);
2265 periodic_controlvm_workqueue = NULL;
2266 destroy_controlvm_payload_info(&controlvm_payload_info);
2268 if (Putfile_buffer_list_pool) {
2269 kmem_cache_destroy(Putfile_buffer_list_pool);
2270 Putfile_buffer_list_pool = NULL;
2273 cleanup_controlvm_structures();
2275 memset(&g_diag_msg_hdr, 0, sizeof(struct controlvm_message_header));
2277 memset(&g_chipset_msg_hdr, 0, sizeof(struct controlvm_message_header));
2279 memset(&g_del_dump_msg_hdr, 0, sizeof(struct controlvm_message_header));
2281 visorchannel_destroy(controlvm_channel);
2283 visorchipset_file_cleanup();
2284 POSTCODE_LINUX_2(DRIVER_EXIT_PC, POSTCODE_SEVERITY_INFO);
2287 module_param_named(testvnic, visorchipset_testvnic, int, S_IRUGO);
2288 MODULE_PARM_DESC(visorchipset_testvnic, "1 to test vnic, using dummy VNIC connected via a loopback to a physical ethernet");
2289 int visorchipset_testvnic = 0;
2291 module_param_named(testvnicclient, visorchipset_testvnicclient, int, S_IRUGO);
2292 MODULE_PARM_DESC(visorchipset_testvnicclient, "1 to test vnic, using real VNIC channel attached to a separate IOVM guest");
2293 int visorchipset_testvnicclient = 0;
2295 module_param_named(testmsg, visorchipset_testmsg, int, S_IRUGO);
2296 MODULE_PARM_DESC(visorchipset_testmsg,
2297 "1 to manufacture the chipset, bus, and switch messages");
2298 int visorchipset_testmsg = 0;
2300 module_param_named(major, visorchipset_major, int, S_IRUGO);
2301 MODULE_PARM_DESC(visorchipset_major, "major device number to use for the device node");
2302 int visorchipset_major = 0;
2304 module_param_named(serverregwait, visorchipset_serverregwait, int, S_IRUGO);
2305 MODULE_PARM_DESC(visorchipset_serverreqwait,
2306 "1 to have the module wait for the visor bus to register");
2307 int visorchipset_serverregwait = 0; /* default is off */
2308 module_param_named(clientregwait, visorchipset_clientregwait, int, S_IRUGO);
2309 MODULE_PARM_DESC(visorchipset_clientregwait, "1 to have the module wait for the visorclientbus to register");
2310 int visorchipset_clientregwait = 1; /* default is on */
2311 module_param_named(testteardown, visorchipset_testteardown, int, S_IRUGO);
2312 MODULE_PARM_DESC(visorchipset_testteardown,
2313 "1 to test teardown of the chipset, bus, and switch");
2314 int visorchipset_testteardown = 0; /* default is off */
2315 module_param_named(disable_controlvm, visorchipset_disable_controlvm, int,
2317 MODULE_PARM_DESC(visorchipset_disable_controlvm,
2318 "1 to disable polling of controlVm channel");
2319 int visorchipset_disable_controlvm = 0; /* default is off */
2320 module_param_named(crash_kernel, visorchipset_crash_kernel, int, S_IRUGO);
2321 MODULE_PARM_DESC(visorchipset_crash_kernel,
2322 "1 means we are running in crash kernel");
2323 int visorchipset_crash_kernel = 0; /* default is running in non-crash kernel */
2324 module_param_named(holdchipsetready, visorchipset_holdchipsetready,
2326 MODULE_PARM_DESC(visorchipset_holdchipsetready,
2327 "1 to hold response to CHIPSET_READY");
2328 int visorchipset_holdchipsetready = 0; /* default is to send CHIPSET_READY
2329 * response immediately */
2330 module_init(visorchipset_init);
2331 module_exit(visorchipset_exit);
2333 MODULE_AUTHOR("Unisys");
2334 MODULE_LICENSE("GPL");
2335 MODULE_DESCRIPTION("Supervisor chipset driver for service partition: ver "
2337 MODULE_VERSION(VERSION);