Commit | Line | Data |
---|---|---|
3e7ee490 | 1 | /* |
3e7ee490 HJ |
2 | * Copyright (c) 2009, Microsoft Corporation. |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
15 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
16 | * | |
17 | * Authors: | |
18 | * Haiyang Zhang <haiyangz@microsoft.com> | |
19 | * Hank Janssen <hjanssen@microsoft.com> | |
3e7ee490 | 20 | */ |
3e7ee490 HJ |
21 | #include <linux/init.h> |
22 | #include <linux/module.h> | |
23 | #include <linux/device.h> | |
24 | #include <linux/irq.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/sysctl.h> | |
9a775dbd | 27 | #include <linux/pci.h> |
c22090fa | 28 | #include <linux/dmi.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
8b5d6d3b | 30 | #include <linux/completion.h> |
2d82f6c7 | 31 | #include "version_info.h" |
e3fe0bb6 | 32 | #include "hv_api.h" |
645954c5 | 33 | #include "logging.h" |
870cde80 | 34 | #include "vmbus.h" |
150b19d4 | 35 | #include "channel.h" |
36199a99 | 36 | #include "vmbus_private.h" |
3e7ee490 | 37 | |
3e7ee490 | 38 | |
454f18a9 | 39 | /* FIXME! We need to do this dynamically for PIC and APIC system */ |
90c9960e GKH |
40 | #define VMBUS_IRQ 0x5 |
41 | #define VMBUS_IRQ_VECTOR IRQ5_VECTOR | |
454f18a9 | 42 | |
1168ac22 S |
43 | struct pci_dev *hv_pci_dev; |
44 | ||
454f18a9 | 45 | /* Main vmbus driver data structure */ |
3e7ee490 | 46 | struct vmbus_driver_context { |
90c9960e GKH |
47 | struct bus_type bus; |
48 | struct tasklet_struct msg_dpc; | |
49 | struct tasklet_struct event_dpc; | |
3e7ee490 HJ |
50 | }; |
51 | ||
3e7ee490 HJ |
52 | static int vmbus_match(struct device *device, struct device_driver *driver); |
53 | static int vmbus_probe(struct device *device); | |
54 | static int vmbus_remove(struct device *device); | |
55 | static void vmbus_shutdown(struct device *device); | |
3e7ee490 | 56 | static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env); |
3e7ee490 | 57 | |
90c9960e | 58 | static irqreturn_t vmbus_isr(int irq, void *dev_id); |
3e7ee490 HJ |
59 | |
60 | static void vmbus_device_release(struct device *device); | |
3e7ee490 | 61 | |
90c9960e GKH |
62 | static ssize_t vmbus_show_device_attr(struct device *dev, |
63 | struct device_attribute *dev_attr, | |
64 | char *buf); | |
3e7ee490 | 65 | |
3e7ee490 | 66 | |
90c9960e | 67 | unsigned int vmbus_loglevel = (ALL_MODULES << 16 | INFO_LVL); |
3e7ee490 | 68 | EXPORT_SYMBOL(vmbus_loglevel); |
90c9960e GKH |
69 | /* (ALL_MODULES << 16 | DEBUG_LVL_ENTEREXIT); */ |
70 | /* (((VMBUS | VMBUS_DRV)<<16) | DEBUG_LVL_ENTEREXIT); */ | |
3e7ee490 HJ |
71 | |
72 | static int vmbus_irq = VMBUS_IRQ; | |
73 | ||
454f18a9 | 74 | /* Set up per device attributes in /sys/bus/vmbus/devices/<bus device> */ |
3e7ee490 HJ |
75 | static struct device_attribute vmbus_device_attrs[] = { |
76 | __ATTR(id, S_IRUGO, vmbus_show_device_attr, NULL), | |
77 | __ATTR(state, S_IRUGO, vmbus_show_device_attr, NULL), | |
78 | __ATTR(class_id, S_IRUGO, vmbus_show_device_attr, NULL), | |
79 | __ATTR(device_id, S_IRUGO, vmbus_show_device_attr, NULL), | |
80 | __ATTR(monitor_id, S_IRUGO, vmbus_show_device_attr, NULL), | |
81 | ||
82 | __ATTR(server_monitor_pending, S_IRUGO, vmbus_show_device_attr, NULL), | |
83 | __ATTR(server_monitor_latency, S_IRUGO, vmbus_show_device_attr, NULL), | |
84 | __ATTR(server_monitor_conn_id, S_IRUGO, vmbus_show_device_attr, NULL), | |
85 | ||
86 | __ATTR(client_monitor_pending, S_IRUGO, vmbus_show_device_attr, NULL), | |
87 | __ATTR(client_monitor_latency, S_IRUGO, vmbus_show_device_attr, NULL), | |
88 | __ATTR(client_monitor_conn_id, S_IRUGO, vmbus_show_device_attr, NULL), | |
89 | ||
90 | __ATTR(out_intr_mask, S_IRUGO, vmbus_show_device_attr, NULL), | |
91 | __ATTR(out_read_index, S_IRUGO, vmbus_show_device_attr, NULL), | |
92 | __ATTR(out_write_index, S_IRUGO, vmbus_show_device_attr, NULL), | |
93 | __ATTR(out_read_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), | |
94 | __ATTR(out_write_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), | |
95 | ||
96 | __ATTR(in_intr_mask, S_IRUGO, vmbus_show_device_attr, NULL), | |
97 | __ATTR(in_read_index, S_IRUGO, vmbus_show_device_attr, NULL), | |
98 | __ATTR(in_write_index, S_IRUGO, vmbus_show_device_attr, NULL), | |
99 | __ATTR(in_read_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), | |
100 | __ATTR(in_write_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), | |
101 | __ATTR_NULL | |
102 | }; | |
3e7ee490 | 103 | |
454f18a9 | 104 | /* The one and only one */ |
adf874cb | 105 | static struct vmbus_driver_context vmbus_drv = { |
90c9960e GKH |
106 | .bus.name = "vmbus", |
107 | .bus.match = vmbus_match, | |
108 | .bus.shutdown = vmbus_shutdown, | |
109 | .bus.remove = vmbus_remove, | |
110 | .bus.probe = vmbus_probe, | |
111 | .bus.uevent = vmbus_uevent, | |
112 | .bus.dev_attrs = vmbus_device_attrs, | |
3e7ee490 HJ |
113 | }; |
114 | ||
adf874cb | 115 | static const char *driver_name = "hyperv"; |
36199a99 | 116 | |
36199a99 | 117 | |
bf6506f6 TT |
118 | struct onmessage_work_context { |
119 | struct work_struct work; | |
120 | struct hv_message msg; | |
121 | }; | |
122 | ||
123 | static void vmbus_onmessage_work(struct work_struct *work) | |
124 | { | |
125 | struct onmessage_work_context *ctx; | |
126 | ||
127 | ctx = container_of(work, struct onmessage_work_context, | |
128 | work); | |
129 | vmbus_onmessage(&ctx->msg); | |
130 | kfree(ctx); | |
131 | } | |
132 | ||
36199a99 GKH |
133 | /* |
134 | * vmbus_on_msg_dpc - DPC routine to handle messages from the hypervisior | |
135 | */ | |
62c1059d | 136 | static void vmbus_on_msg_dpc(unsigned long data) |
36199a99 GKH |
137 | { |
138 | int cpu = smp_processor_id(); | |
139 | void *page_addr = hv_context.synic_message_page[cpu]; | |
140 | struct hv_message *msg = (struct hv_message *)page_addr + | |
141 | VMBUS_MESSAGE_SINT; | |
bf6506f6 | 142 | struct onmessage_work_context *ctx; |
36199a99 GKH |
143 | |
144 | while (1) { | |
145 | if (msg->header.message_type == HVMSG_NONE) { | |
146 | /* no msg */ | |
147 | break; | |
148 | } else { | |
bf6506f6 TT |
149 | ctx = kmalloc(sizeof(*ctx), GFP_ATOMIC); |
150 | if (ctx == NULL) | |
36199a99 | 151 | continue; |
bf6506f6 TT |
152 | INIT_WORK(&ctx->work, vmbus_onmessage_work); |
153 | memcpy(&ctx->msg, msg, sizeof(*msg)); | |
da9fcb72 | 154 | queue_work(vmbus_connection.work_queue, &ctx->work); |
36199a99 GKH |
155 | } |
156 | ||
157 | msg->header.message_type = HVMSG_NONE; | |
158 | ||
159 | /* | |
160 | * Make sure the write to MessageType (ie set to | |
161 | * HVMSG_NONE) happens before we read the | |
162 | * MessagePending and EOMing. Otherwise, the EOMing | |
163 | * will not deliver any more messages since there is | |
164 | * no empty slot | |
165 | */ | |
166 | mb(); | |
167 | ||
168 | if (msg->header.message_flags.msg_pending) { | |
169 | /* | |
170 | * This will cause message queue rescan to | |
171 | * possibly deliver another msg from the | |
172 | * hypervisor | |
173 | */ | |
174 | wrmsrl(HV_X64_MSR_EOM, 0); | |
175 | } | |
176 | } | |
177 | } | |
178 | ||
36199a99 GKH |
179 | /* |
180 | * vmbus_on_isr - ISR routine | |
181 | */ | |
480ae58d | 182 | static int vmbus_on_isr(void) |
36199a99 GKH |
183 | { |
184 | int ret = 0; | |
185 | int cpu = smp_processor_id(); | |
186 | void *page_addr; | |
187 | struct hv_message *msg; | |
188 | union hv_synic_event_flags *event; | |
189 | ||
190 | page_addr = hv_context.synic_message_page[cpu]; | |
191 | msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT; | |
192 | ||
193 | /* Check if there are actual msgs to be process */ | |
194 | if (msg->header.message_type != HVMSG_NONE) { | |
195 | DPRINT_DBG(VMBUS, "received msg type %d size %d", | |
196 | msg->header.message_type, | |
197 | msg->header.payload_size); | |
198 | ret |= 0x1; | |
199 | } | |
200 | ||
201 | /* TODO: Check if there are events to be process */ | |
202 | page_addr = hv_context.synic_event_page[cpu]; | |
203 | event = (union hv_synic_event_flags *)page_addr + VMBUS_MESSAGE_SINT; | |
204 | ||
205 | /* Since we are a child, we only need to check bit 0 */ | |
206 | if (test_and_clear_bit(0, (unsigned long *) &event->flags32[0])) { | |
207 | DPRINT_DBG(VMBUS, "received event %d", event->flags32[0]); | |
208 | ret |= 0x2; | |
209 | } | |
210 | ||
211 | return ret; | |
212 | } | |
213 | ||
150b19d4 GKH |
214 | static void get_channel_info(struct hv_device *device, |
215 | struct hv_device_info *info) | |
216 | { | |
217 | struct vmbus_channel_debug_info debug_info; | |
218 | ||
cae5b843 | 219 | if (!device->channel) |
150b19d4 GKH |
220 | return; |
221 | ||
cae5b843 | 222 | vmbus_get_debug_info(device->channel, &debug_info); |
150b19d4 | 223 | |
ca623ad3 HZ |
224 | info->chn_id = debug_info.relid; |
225 | info->chn_state = debug_info.state; | |
226 | memcpy(&info->chn_type, &debug_info.interfacetype, | |
150b19d4 | 227 | sizeof(struct hv_guid)); |
ca623ad3 | 228 | memcpy(&info->chn_instance, &debug_info.interface_instance, |
150b19d4 GKH |
229 | sizeof(struct hv_guid)); |
230 | ||
ca623ad3 | 231 | info->monitor_id = debug_info.monitorid; |
150b19d4 | 232 | |
ca623ad3 HZ |
233 | info->server_monitor_pending = debug_info.servermonitor_pending; |
234 | info->server_monitor_latency = debug_info.servermonitor_latency; | |
235 | info->server_monitor_conn_id = debug_info.servermonitor_connectionid; | |
150b19d4 | 236 | |
ca623ad3 HZ |
237 | info->client_monitor_pending = debug_info.clientmonitor_pending; |
238 | info->client_monitor_latency = debug_info.clientmonitor_latency; | |
239 | info->client_monitor_conn_id = debug_info.clientmonitor_connectionid; | |
150b19d4 | 240 | |
ca623ad3 HZ |
241 | info->inbound.int_mask = debug_info.inbound.current_interrupt_mask; |
242 | info->inbound.read_idx = debug_info.inbound.current_read_index; | |
243 | info->inbound.write_idx = debug_info.inbound.current_write_index; | |
244 | info->inbound.bytes_avail_toread = | |
245 | debug_info.inbound.bytes_avail_toread; | |
246 | info->inbound.bytes_avail_towrite = | |
82f8bd40 HZ |
247 | debug_info.inbound.bytes_avail_towrite; |
248 | ||
ca623ad3 | 249 | info->outbound.int_mask = |
82f8bd40 | 250 | debug_info.outbound.current_interrupt_mask; |
ca623ad3 HZ |
251 | info->outbound.read_idx = debug_info.outbound.current_read_index; |
252 | info->outbound.write_idx = debug_info.outbound.current_write_index; | |
253 | info->outbound.bytes_avail_toread = | |
82f8bd40 | 254 | debug_info.outbound.bytes_avail_toread; |
ca623ad3 | 255 | info->outbound.bytes_avail_towrite = |
82f8bd40 | 256 | debug_info.outbound.bytes_avail_towrite; |
150b19d4 GKH |
257 | } |
258 | ||
3e189519 | 259 | /* |
90c9960e GKH |
260 | * vmbus_show_device_attr - Show the device attribute in sysfs. |
261 | * | |
262 | * This is invoked when user does a | |
263 | * "cat /sys/bus/vmbus/devices/<busdevice>/<attr name>" | |
264 | */ | |
265 | static ssize_t vmbus_show_device_attr(struct device *dev, | |
266 | struct device_attribute *dev_attr, | |
267 | char *buf) | |
3e7ee490 | 268 | { |
6bad88da | 269 | struct hv_device *device_ctx = device_to_hv_device(dev); |
ee3d7ddf | 270 | struct hv_device_info device_info; |
3e7ee490 | 271 | |
ee3d7ddf | 272 | memset(&device_info, 0, sizeof(struct hv_device_info)); |
3e7ee490 | 273 | |
6bad88da | 274 | get_channel_info(device_ctx, &device_info); |
3e7ee490 | 275 | |
90c9960e GKH |
276 | if (!strcmp(dev_attr->attr.name, "class_id")) { |
277 | return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-" | |
278 | "%02x%02x%02x%02x%02x%02x%02x%02x}\n", | |
ca623ad3 HZ |
279 | device_info.chn_type.data[3], |
280 | device_info.chn_type.data[2], | |
281 | device_info.chn_type.data[1], | |
282 | device_info.chn_type.data[0], | |
283 | device_info.chn_type.data[5], | |
284 | device_info.chn_type.data[4], | |
285 | device_info.chn_type.data[7], | |
286 | device_info.chn_type.data[6], | |
287 | device_info.chn_type.data[8], | |
288 | device_info.chn_type.data[9], | |
289 | device_info.chn_type.data[10], | |
290 | device_info.chn_type.data[11], | |
291 | device_info.chn_type.data[12], | |
292 | device_info.chn_type.data[13], | |
293 | device_info.chn_type.data[14], | |
294 | device_info.chn_type.data[15]); | |
90c9960e GKH |
295 | } else if (!strcmp(dev_attr->attr.name, "device_id")) { |
296 | return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-" | |
297 | "%02x%02x%02x%02x%02x%02x%02x%02x}\n", | |
ca623ad3 HZ |
298 | device_info.chn_instance.data[3], |
299 | device_info.chn_instance.data[2], | |
300 | device_info.chn_instance.data[1], | |
301 | device_info.chn_instance.data[0], | |
302 | device_info.chn_instance.data[5], | |
303 | device_info.chn_instance.data[4], | |
304 | device_info.chn_instance.data[7], | |
305 | device_info.chn_instance.data[6], | |
306 | device_info.chn_instance.data[8], | |
307 | device_info.chn_instance.data[9], | |
308 | device_info.chn_instance.data[10], | |
309 | device_info.chn_instance.data[11], | |
310 | device_info.chn_instance.data[12], | |
311 | device_info.chn_instance.data[13], | |
312 | device_info.chn_instance.data[14], | |
313 | device_info.chn_instance.data[15]); | |
90c9960e | 314 | } else if (!strcmp(dev_attr->attr.name, "state")) { |
ca623ad3 | 315 | return sprintf(buf, "%d\n", device_info.chn_state); |
90c9960e | 316 | } else if (!strcmp(dev_attr->attr.name, "id")) { |
ca623ad3 | 317 | return sprintf(buf, "%d\n", device_info.chn_id); |
90c9960e | 318 | } else if (!strcmp(dev_attr->attr.name, "out_intr_mask")) { |
ca623ad3 | 319 | return sprintf(buf, "%d\n", device_info.outbound.int_mask); |
90c9960e | 320 | } else if (!strcmp(dev_attr->attr.name, "out_read_index")) { |
ca623ad3 | 321 | return sprintf(buf, "%d\n", device_info.outbound.read_idx); |
90c9960e | 322 | } else if (!strcmp(dev_attr->attr.name, "out_write_index")) { |
ca623ad3 | 323 | return sprintf(buf, "%d\n", device_info.outbound.write_idx); |
90c9960e GKH |
324 | } else if (!strcmp(dev_attr->attr.name, "out_read_bytes_avail")) { |
325 | return sprintf(buf, "%d\n", | |
ca623ad3 | 326 | device_info.outbound.bytes_avail_toread); |
90c9960e GKH |
327 | } else if (!strcmp(dev_attr->attr.name, "out_write_bytes_avail")) { |
328 | return sprintf(buf, "%d\n", | |
ca623ad3 | 329 | device_info.outbound.bytes_avail_towrite); |
90c9960e | 330 | } else if (!strcmp(dev_attr->attr.name, "in_intr_mask")) { |
ca623ad3 | 331 | return sprintf(buf, "%d\n", device_info.inbound.int_mask); |
90c9960e | 332 | } else if (!strcmp(dev_attr->attr.name, "in_read_index")) { |
ca623ad3 | 333 | return sprintf(buf, "%d\n", device_info.inbound.read_idx); |
90c9960e | 334 | } else if (!strcmp(dev_attr->attr.name, "in_write_index")) { |
ca623ad3 | 335 | return sprintf(buf, "%d\n", device_info.inbound.write_idx); |
90c9960e GKH |
336 | } else if (!strcmp(dev_attr->attr.name, "in_read_bytes_avail")) { |
337 | return sprintf(buf, "%d\n", | |
ca623ad3 | 338 | device_info.inbound.bytes_avail_toread); |
90c9960e GKH |
339 | } else if (!strcmp(dev_attr->attr.name, "in_write_bytes_avail")) { |
340 | return sprintf(buf, "%d\n", | |
ca623ad3 | 341 | device_info.inbound.bytes_avail_towrite); |
90c9960e | 342 | } else if (!strcmp(dev_attr->attr.name, "monitor_id")) { |
ca623ad3 | 343 | return sprintf(buf, "%d\n", device_info.monitor_id); |
90c9960e | 344 | } else if (!strcmp(dev_attr->attr.name, "server_monitor_pending")) { |
ca623ad3 | 345 | return sprintf(buf, "%d\n", device_info.server_monitor_pending); |
90c9960e | 346 | } else if (!strcmp(dev_attr->attr.name, "server_monitor_latency")) { |
ca623ad3 | 347 | return sprintf(buf, "%d\n", device_info.server_monitor_latency); |
90c9960e GKH |
348 | } else if (!strcmp(dev_attr->attr.name, "server_monitor_conn_id")) { |
349 | return sprintf(buf, "%d\n", | |
ca623ad3 | 350 | device_info.server_monitor_conn_id); |
90c9960e | 351 | } else if (!strcmp(dev_attr->attr.name, "client_monitor_pending")) { |
ca623ad3 | 352 | return sprintf(buf, "%d\n", device_info.client_monitor_pending); |
90c9960e | 353 | } else if (!strcmp(dev_attr->attr.name, "client_monitor_latency")) { |
ca623ad3 | 354 | return sprintf(buf, "%d\n", device_info.client_monitor_latency); |
90c9960e GKH |
355 | } else if (!strcmp(dev_attr->attr.name, "client_monitor_conn_id")) { |
356 | return sprintf(buf, "%d\n", | |
ca623ad3 | 357 | device_info.client_monitor_conn_id); |
90c9960e | 358 | } else { |
3e7ee490 HJ |
359 | return 0; |
360 | } | |
361 | } | |
362 | ||
3e189519 | 363 | /* |
90c9960e GKH |
364 | * vmbus_bus_init -Main vmbus driver initialization routine. |
365 | * | |
366 | * Here, we | |
0686e4f4 | 367 | * - initialize the vmbus driver context |
0686e4f4 LL |
368 | * - invoke the vmbus hv main init routine |
369 | * - get the irq resource | |
0686e4f4 | 370 | * - retrieve the channel offers |
90c9960e | 371 | */ |
6c884555 | 372 | static int vmbus_bus_init(void) |
3e7ee490 | 373 | { |
adf874cb | 374 | struct vmbus_driver_context *vmbus_drv_ctx = &vmbus_drv; |
90c9960e GKH |
375 | int ret; |
376 | unsigned int vector; | |
3e7ee490 | 377 | |
6d26e38f GKH |
378 | DPRINT_INFO(VMBUS, "+++++++ HV Driver version = %s +++++++", |
379 | HV_DRV_VERSION); | |
380 | DPRINT_INFO(VMBUS, "+++++++ Vmbus supported version = %d +++++++", | |
381 | VMBUS_REVISION_NUMBER); | |
382 | DPRINT_INFO(VMBUS, "+++++++ Vmbus using SINT %d +++++++", | |
383 | VMBUS_MESSAGE_SINT); | |
384 | DPRINT_DBG(VMBUS, "sizeof(vmbus_channel_packet_page_buffer)=%zd, " | |
385 | "sizeof(VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER)=%zd", | |
386 | sizeof(struct vmbus_channel_packet_page_buffer), | |
387 | sizeof(struct vmbus_channel_packet_multipage_buffer)); | |
388 | ||
6d26e38f GKH |
389 | |
390 | /* Hypervisor initialization...setup hypercall page..etc */ | |
391 | ret = hv_init(); | |
90c9960e | 392 | if (ret != 0) { |
6d26e38f GKH |
393 | DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x", |
394 | ret); | |
3e7ee490 HJ |
395 | goto cleanup; |
396 | } | |
397 | ||
3e7ee490 | 398 | |
a6e4d8e3 | 399 | vmbus_drv_ctx->bus.name = driver_name; |
3e7ee490 | 400 | |
454f18a9 | 401 | /* Initialize the bus context */ |
62c1059d | 402 | tasklet_init(&vmbus_drv_ctx->msg_dpc, vmbus_on_msg_dpc, |
a6e4d8e3 | 403 | (unsigned long)NULL); |
6de3d6aa | 404 | tasklet_init(&vmbus_drv_ctx->event_dpc, vmbus_on_event, |
a6e4d8e3 | 405 | (unsigned long)NULL); |
3e7ee490 | 406 | |
a6e4d8e3 | 407 | /* Now, register the bus with LDM */ |
c19fbca3 | 408 | ret = bus_register(&vmbus_drv_ctx->bus); |
90c9960e | 409 | if (ret) { |
c19fbca3 BP |
410 | ret = -1; |
411 | goto cleanup; | |
412 | } | |
3e7ee490 | 413 | |
454f18a9 | 414 | /* Get the interrupt resource */ |
90c9960e | 415 | ret = request_irq(vmbus_irq, vmbus_isr, IRQF_SAMPLE_RANDOM, |
a6e4d8e3 | 416 | driver_name, NULL); |
3e7ee490 | 417 | |
90c9960e GKH |
418 | if (ret != 0) { |
419 | DPRINT_ERR(VMBUS_DRV, "ERROR - Unable to request IRQ %d", | |
420 | vmbus_irq); | |
3e7ee490 HJ |
421 | |
422 | bus_unregister(&vmbus_drv_ctx->bus); | |
423 | ||
424 | ret = -1; | |
425 | goto cleanup; | |
426 | } | |
3e7ee490 | 427 | vector = VMBUS_IRQ_VECTOR; |
3e7ee490 HJ |
428 | |
429 | DPRINT_INFO(VMBUS_DRV, "irq 0x%x vector 0x%x", vmbus_irq, vector); | |
430 | ||
800b6902 S |
431 | /* |
432 | * Notify the hypervisor of our irq and | |
433 | * connect to the host. | |
434 | */ | |
435 | on_each_cpu(hv_synic_init, (void *)&vector, 1); | |
436 | ret = vmbus_connect(); | |
90c9960e | 437 | if (ret) { |
5d48a1c2 BP |
438 | free_irq(vmbus_irq, NULL); |
439 | bus_unregister(&vmbus_drv_ctx->bus); | |
5d48a1c2 BP |
440 | goto cleanup; |
441 | } | |
442 | ||
800b6902 | 443 | |
2d6e882b | 444 | vmbus_request_offers(); |
8b5d6d3b HZ |
445 | wait_for_completion(&hv_channel_ready); |
446 | ||
3e7ee490 | 447 | cleanup: |
3e7ee490 HJ |
448 | return ret; |
449 | } | |
450 | ||
3e189519 | 451 | /* |
90c9960e GKH |
452 | * vmbus_bus_exit - Terminate the vmbus driver. |
453 | * | |
454 | * This routine is opposite of vmbus_bus_init() | |
455 | */ | |
bd1de709 | 456 | static void vmbus_bus_exit(void) |
3e7ee490 | 457 | { |
adf874cb | 458 | struct vmbus_driver_context *vmbus_drv_ctx = &vmbus_drv; |
3e7ee490 | 459 | |
3e7ee490 | 460 | |
f51b3593 S |
461 | vmbus_release_unattached_channels(); |
462 | vmbus_disconnect(); | |
463 | on_each_cpu(hv_synic_cleanup, NULL, 1); | |
3e7ee490 | 464 | |
ece0e32f | 465 | hv_cleanup(); |
3e7ee490 | 466 | |
3e7ee490 HJ |
467 | bus_unregister(&vmbus_drv_ctx->bus); |
468 | ||
469 | free_irq(vmbus_irq, NULL); | |
470 | ||
471 | tasklet_kill(&vmbus_drv_ctx->msg_dpc); | |
472 | tasklet_kill(&vmbus_drv_ctx->event_dpc); | |
3e7ee490 HJ |
473 | } |
474 | ||
3e189519 | 475 | |
90c9960e | 476 | /** |
3e189519 | 477 | * vmbus_child_driver_register() - Register a vmbus's child driver |
c643269d | 478 | * @drv: Pointer to driver structure you want to register |
3e189519 | 479 | * |
3e189519 HJ |
480 | * |
481 | * Registers the given driver with Linux through the 'driver_register()' call | |
482 | * And sets up the hyper-v vmbus handling for this driver. | |
483 | * It will return the state of the 'driver_register()' call. | |
484 | * | |
485 | * Mainly used by Hyper-V drivers. | |
90c9960e | 486 | */ |
c643269d | 487 | int vmbus_child_driver_register(struct device_driver *drv) |
3e7ee490 | 488 | { |
5d48a1c2 | 489 | int ret; |
3e7ee490 | 490 | |
90c9960e | 491 | DPRINT_INFO(VMBUS_DRV, "child driver (%p) registering - name %s", |
c643269d | 492 | drv, drv->name); |
3e7ee490 | 493 | |
454f18a9 | 494 | /* The child driver on this vmbus */ |
c643269d | 495 | drv->bus = &vmbus_drv.bus; |
3e7ee490 | 496 | |
c643269d | 497 | ret = driver_register(drv); |
3e7ee490 | 498 | |
2d6e882b | 499 | vmbus_request_offers(); |
3e7ee490 | 500 | |
5d48a1c2 | 501 | return ret; |
3e7ee490 | 502 | } |
3e7ee490 HJ |
503 | EXPORT_SYMBOL(vmbus_child_driver_register); |
504 | ||
90c9960e | 505 | /** |
3e189519 | 506 | * vmbus_child_driver_unregister() - Unregister a vmbus's child driver |
06de23f7 | 507 | * @drv: Pointer to driver structure you want to un-register |
3e189519 | 508 | * |
3e189519 HJ |
509 | * |
510 | * Un-register the given driver with Linux through the 'driver_unregister()' | |
511 | * call. And ungegisters the driver from the Hyper-V vmbus handler. | |
512 | * | |
513 | * Mainly used by Hyper-V drivers. | |
90c9960e | 514 | */ |
06de23f7 | 515 | void vmbus_child_driver_unregister(struct device_driver *drv) |
3e7ee490 | 516 | { |
90c9960e | 517 | DPRINT_INFO(VMBUS_DRV, "child driver (%p) unregistering - name %s", |
06de23f7 | 518 | drv, drv->name); |
3e7ee490 | 519 | |
06de23f7 | 520 | driver_unregister(drv); |
3e7ee490 | 521 | |
06de23f7 | 522 | drv->bus = NULL; |
3e7ee490 | 523 | } |
3e7ee490 HJ |
524 | EXPORT_SYMBOL(vmbus_child_driver_unregister); |
525 | ||
3e189519 HJ |
526 | /* |
527 | * vmbus_child_device_create - Creates and registers a new child device | |
528 | * on the vmbus. | |
90c9960e | 529 | */ |
89733aa9 GKH |
530 | struct hv_device *vmbus_child_device_create(struct hv_guid *type, |
531 | struct hv_guid *instance, | |
532 | struct vmbus_channel *channel) | |
3e7ee490 | 533 | { |
3d3b5518 | 534 | struct hv_device *child_device_obj; |
3e7ee490 | 535 | |
454f18a9 | 536 | /* Allocate the new child device */ |
6bad88da S |
537 | child_device_obj = kzalloc(sizeof(struct hv_device), GFP_KERNEL); |
538 | if (!child_device_obj) { | |
90c9960e GKH |
539 | DPRINT_ERR(VMBUS_DRV, |
540 | "unable to allocate device_context for child device"); | |
3e7ee490 HJ |
541 | return NULL; |
542 | } | |
543 | ||
544 | DPRINT_DBG(VMBUS_DRV, "child device (%p) allocated - " | |
90c9960e GKH |
545 | "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
546 | "%02x%02x%02x%02x%02x%02x%02x%02x}," | |
547 | "id {%02x%02x%02x%02x-%02x%02x-%02x%02x-" | |
548 | "%02x%02x%02x%02x%02x%02x%02x%02x}", | |
6bad88da | 549 | &child_device_obj->device, |
daaa8cc3 GKH |
550 | type->data[3], type->data[2], type->data[1], type->data[0], |
551 | type->data[5], type->data[4], type->data[7], type->data[6], | |
552 | type->data[8], type->data[9], type->data[10], type->data[11], | |
553 | type->data[12], type->data[13], type->data[14], type->data[15], | |
90c9960e GKH |
554 | instance->data[3], instance->data[2], |
555 | instance->data[1], instance->data[0], | |
556 | instance->data[5], instance->data[4], | |
557 | instance->data[7], instance->data[6], | |
558 | instance->data[8], instance->data[9], | |
559 | instance->data[10], instance->data[11], | |
560 | instance->data[12], instance->data[13], | |
561 | instance->data[14], instance->data[15]); | |
3e7ee490 | 562 | |
cae5b843 | 563 | child_device_obj->channel = channel; |
ca623ad3 HZ |
564 | memcpy(&child_device_obj->dev_type, type, sizeof(struct hv_guid)); |
565 | memcpy(&child_device_obj->dev_instance, instance, | |
90c9960e | 566 | sizeof(struct hv_guid)); |
3e7ee490 | 567 | |
3e7ee490 | 568 | |
3e7ee490 HJ |
569 | return child_device_obj; |
570 | } | |
571 | ||
3e189519 | 572 | /* |
e13a0b5a | 573 | * vmbus_child_device_register - Register the child device |
90c9960e | 574 | */ |
3ca07cb0 | 575 | int vmbus_child_device_register(struct hv_device *child_device_obj) |
3e7ee490 | 576 | { |
90c9960e | 577 | int ret = 0; |
6bad88da | 578 | |
f4888417 | 579 | static atomic_t device_num = ATOMIC_INIT(0); |
3e7ee490 | 580 | |
90c9960e | 581 | DPRINT_DBG(VMBUS_DRV, "child device (%p) registering", |
6bad88da | 582 | child_device_obj); |
454f18a9 | 583 | |
1bb40a25 | 584 | /* Set the device name. Otherwise, device_register() will fail. */ |
6bad88da | 585 | dev_set_name(&child_device_obj->device, "vmbus_0_%d", |
90c9960e | 586 | atomic_inc_return(&device_num)); |
3e7ee490 | 587 | |
454f18a9 | 588 | /* The new device belongs to this bus */ |
6bad88da | 589 | child_device_obj->device.bus = &vmbus_drv.bus; /* device->dev.bus; */ |
800b6902 | 590 | child_device_obj->device.parent = &hv_pci_dev->dev; |
6bad88da | 591 | child_device_obj->device.release = vmbus_device_release; |
3e7ee490 | 592 | |
90c9960e GKH |
593 | /* |
594 | * Register with the LDM. This will kick off the driver/device | |
595 | * binding...which will eventually call vmbus_match() and vmbus_probe() | |
596 | */ | |
6bad88da | 597 | ret = device_register(&child_device_obj->device); |
3e7ee490 | 598 | |
454f18a9 | 599 | /* vmbus_probe() error does not get propergate to device_register(). */ |
6bad88da | 600 | ret = child_device_obj->probe_error; |
3e7ee490 HJ |
601 | |
602 | if (ret) | |
90c9960e | 603 | DPRINT_ERR(VMBUS_DRV, "unable to register child device (%p)", |
6bad88da | 604 | &child_device_obj->device); |
3e7ee490 | 605 | else |
90c9960e | 606 | DPRINT_INFO(VMBUS_DRV, "child device (%p) registered", |
6bad88da | 607 | &child_device_obj->device); |
3e7ee490 | 608 | |
3e7ee490 HJ |
609 | return ret; |
610 | } | |
611 | ||
3e189519 HJ |
612 | /* |
613 | * vmbus_child_device_unregister - Remove the specified child device | |
614 | * from the vmbus. | |
90c9960e | 615 | */ |
9d8bd71a | 616 | void vmbus_child_device_unregister(struct hv_device *device_obj) |
3e7ee490 | 617 | { |
3e7ee490 | 618 | |
90c9960e | 619 | DPRINT_INFO(VMBUS_DRV, "unregistering child device (%p)", |
6bad88da | 620 | &device_obj->device); |
3e7ee490 | 621 | |
90c9960e GKH |
622 | /* |
623 | * Kick off the process of unregistering the device. | |
624 | * This will call vmbus_remove() and eventually vmbus_device_release() | |
625 | */ | |
6bad88da | 626 | device_unregister(&device_obj->device); |
3e7ee490 | 627 | |
90c9960e | 628 | DPRINT_INFO(VMBUS_DRV, "child device (%p) unregistered", |
6bad88da | 629 | &device_obj->device); |
3e7ee490 HJ |
630 | } |
631 | ||
3e189519 | 632 | /* |
90c9960e GKH |
633 | * vmbus_uevent - add uevent for our device |
634 | * | |
635 | * This routine is invoked when a device is added or removed on the vmbus to | |
636 | * generate a uevent to udev in the userspace. The udev will then look at its | |
637 | * rule and the uevent generated here to load the appropriate driver | |
638 | */ | |
3e7ee490 HJ |
639 | static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env) |
640 | { | |
6bad88da | 641 | struct hv_device *dev = device_to_hv_device(device); |
3e7ee490 HJ |
642 | int ret; |
643 | ||
90c9960e GKH |
644 | DPRINT_INFO(VMBUS_DRV, "generating uevent - VMBUS_DEVICE_CLASS_GUID={" |
645 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-" | |
646 | "%02x%02x%02x%02x%02x%02x%02x%02x}", | |
65c22791 S |
647 | dev->dev_type.data[3], dev->dev_type.data[2], |
648 | dev->dev_type.data[1], dev->dev_type.data[0], | |
649 | dev->dev_type.data[5], dev->dev_type.data[4], | |
650 | dev->dev_type.data[7], dev->dev_type.data[6], | |
651 | dev->dev_type.data[8], dev->dev_type.data[9], | |
652 | dev->dev_type.data[10], | |
653 | dev->dev_type.data[11], | |
654 | dev->dev_type.data[12], | |
655 | dev->dev_type.data[13], | |
656 | dev->dev_type.data[14], | |
657 | dev->dev_type.data[15]); | |
3e7ee490 | 658 | |
90c9960e GKH |
659 | ret = add_uevent_var(env, "VMBUS_DEVICE_CLASS_GUID={" |
660 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-" | |
661 | "%02x%02x%02x%02x%02x%02x%02x%02x}", | |
65c22791 S |
662 | dev->dev_type.data[3], |
663 | dev->dev_type.data[2], | |
664 | dev->dev_type.data[1], | |
665 | dev->dev_type.data[0], | |
666 | dev->dev_type.data[5], | |
667 | dev->dev_type.data[4], | |
668 | dev->dev_type.data[7], | |
669 | dev->dev_type.data[6], | |
670 | dev->dev_type.data[8], | |
671 | dev->dev_type.data[9], | |
672 | dev->dev_type.data[10], | |
673 | dev->dev_type.data[11], | |
674 | dev->dev_type.data[12], | |
675 | dev->dev_type.data[13], | |
676 | dev->dev_type.data[14], | |
677 | dev->dev_type.data[15]); | |
3e7ee490 HJ |
678 | |
679 | if (ret) | |
3e7ee490 | 680 | return ret; |
3e7ee490 | 681 | |
90c9960e GKH |
682 | ret = add_uevent_var(env, "VMBUS_DEVICE_DEVICE_GUID={" |
683 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-" | |
684 | "%02x%02x%02x%02x%02x%02x%02x%02x}", | |
d5889771 S |
685 | dev->dev_instance.data[3], |
686 | dev->dev_instance.data[2], | |
687 | dev->dev_instance.data[1], | |
688 | dev->dev_instance.data[0], | |
689 | dev->dev_instance.data[5], | |
690 | dev->dev_instance.data[4], | |
691 | dev->dev_instance.data[7], | |
692 | dev->dev_instance.data[6], | |
693 | dev->dev_instance.data[8], | |
694 | dev->dev_instance.data[9], | |
695 | dev->dev_instance.data[10], | |
696 | dev->dev_instance.data[11], | |
697 | dev->dev_instance.data[12], | |
698 | dev->dev_instance.data[13], | |
699 | dev->dev_instance.data[14], | |
700 | dev->dev_instance.data[15]); | |
3e7ee490 | 701 | if (ret) |
3e7ee490 | 702 | return ret; |
3e7ee490 | 703 | |
3e7ee490 HJ |
704 | return 0; |
705 | } | |
706 | ||
3e189519 | 707 | /* |
90c9960e GKH |
708 | * vmbus_match - Attempt to match the specified device to the specified driver |
709 | */ | |
3e7ee490 HJ |
710 | static int vmbus_match(struct device *device, struct device_driver *driver) |
711 | { | |
90c9960e | 712 | int match = 0; |
150f9398 | 713 | struct hv_driver *drv = drv_to_hv_drv(driver); |
6bad88da | 714 | struct hv_device *device_ctx = device_to_hv_device(device); |
3e7ee490 | 715 | |
454f18a9 | 716 | /* We found our driver ? */ |
6bad88da | 717 | if (memcmp(&device_ctx->dev_type, &drv->dev_type, |
90c9960e | 718 | sizeof(struct hv_guid)) == 0) { |
90c9960e | 719 | |
6bad88da | 720 | device_ctx->drv = drv->priv; |
90c9960e GKH |
721 | DPRINT_INFO(VMBUS_DRV, |
722 | "device object (%p) set to driver object (%p)", | |
6bad88da S |
723 | &device_ctx, |
724 | device_ctx->drv); | |
3e7ee490 HJ |
725 | |
726 | match = 1; | |
727 | } | |
3e7ee490 HJ |
728 | return match; |
729 | } | |
730 | ||
3e189519 | 731 | /* |
90c9960e GKH |
732 | * vmbus_probe_failed_cb - Callback when a driver probe failed in vmbus_probe() |
733 | * | |
734 | * We need a callback because we cannot invoked device_unregister() inside | |
735 | * vmbus_probe() since vmbus_probe() may be invoked inside device_register() | |
736 | * i.e. we cannot call device_unregister() inside device_register() | |
737 | */ | |
3e7ee490 | 738 | static void vmbus_probe_failed_cb(struct work_struct *context) |
3e7ee490 | 739 | { |
6bad88da | 740 | struct hv_device *device_ctx = (struct hv_device *)context; |
3e7ee490 | 741 | |
90c9960e GKH |
742 | /* |
743 | * Kick off the process of unregistering the device. | |
744 | * This will call vmbus_remove() and eventually vmbus_device_release() | |
745 | */ | |
3e7ee490 HJ |
746 | device_unregister(&device_ctx->device); |
747 | ||
454f18a9 | 748 | /* put_device(&device_ctx->device); */ |
3e7ee490 HJ |
749 | } |
750 | ||
3e189519 | 751 | /* |
90c9960e GKH |
752 | * vmbus_probe - Add the new vmbus's child device |
753 | */ | |
3e7ee490 HJ |
754 | static int vmbus_probe(struct device *child_device) |
755 | { | |
90c9960e | 756 | int ret = 0; |
150f9398 S |
757 | struct hv_driver *drv = |
758 | drv_to_hv_drv(child_device->driver); | |
6bad88da | 759 | struct hv_device *dev = device_to_hv_device(child_device); |
3e7ee490 | 760 | |
454f18a9 | 761 | /* Let the specific open-source driver handles the probe if it can */ |
150f9398 | 762 | if (drv->driver.probe) { |
6bad88da | 763 | ret = dev->probe_error = |
150f9398 | 764 | drv->driver.probe(child_device); |
90c9960e GKH |
765 | if (ret != 0) { |
766 | DPRINT_ERR(VMBUS_DRV, "probe() failed for device %s " | |
767 | "(%p) on driver %s (%d)...", | |
768 | dev_name(child_device), child_device, | |
769 | child_device->driver->name, ret); | |
770 | ||
a3c7fe9a | 771 | INIT_WORK(&dev->probe_failed_work_item, |
90c9960e | 772 | vmbus_probe_failed_cb); |
a3c7fe9a | 773 | schedule_work(&dev->probe_failed_work_item); |
3e7ee490 | 774 | } |
90c9960e GKH |
775 | } else { |
776 | DPRINT_ERR(VMBUS_DRV, "probe() method not set for driver - %s", | |
777 | child_device->driver->name); | |
3e7ee490 HJ |
778 | ret = -1; |
779 | } | |
3e7ee490 HJ |
780 | return ret; |
781 | } | |
782 | ||
3e189519 | 783 | /* |
90c9960e GKH |
784 | * vmbus_remove - Remove a vmbus device |
785 | */ | |
3e7ee490 HJ |
786 | static int vmbus_remove(struct device *child_device) |
787 | { | |
90c9960e | 788 | int ret; |
150f9398 | 789 | struct hv_driver *drv; |
3e7ee490 | 790 | |
3e7ee490 | 791 | |
90c9960e | 792 | if (child_device->driver) { |
150f9398 | 793 | drv = drv_to_hv_drv(child_device->driver); |
3e7ee490 | 794 | |
90c9960e GKH |
795 | /* |
796 | * Let the specific open-source driver handles the removal if | |
797 | * it can | |
798 | */ | |
150f9398 S |
799 | if (drv->driver.remove) { |
800 | ret = drv->driver.remove(child_device); | |
90c9960e GKH |
801 | } else { |
802 | DPRINT_ERR(VMBUS_DRV, | |
803 | "remove() method not set for driver - %s", | |
804 | child_device->driver->name); | |
3e7ee490 HJ |
805 | ret = -1; |
806 | } | |
807 | } | |
3e7ee490 | 808 | |
3e7ee490 HJ |
809 | return 0; |
810 | } | |
811 | ||
3e189519 | 812 | /* |
90c9960e GKH |
813 | * vmbus_shutdown - Shutdown a vmbus device |
814 | */ | |
3e7ee490 HJ |
815 | static void vmbus_shutdown(struct device *child_device) |
816 | { | |
150f9398 | 817 | struct hv_driver *drv; |
3e7ee490 | 818 | |
3e7ee490 | 819 | |
454f18a9 | 820 | /* The device may not be attached yet */ |
83c720ea | 821 | if (!child_device->driver) |
3e7ee490 | 822 | return; |
3e7ee490 | 823 | |
150f9398 | 824 | drv = drv_to_hv_drv(child_device->driver); |
3e7ee490 | 825 | |
454f18a9 | 826 | /* Let the specific open-source driver handles the removal if it can */ |
150f9398 S |
827 | if (drv->driver.shutdown) |
828 | drv->driver.shutdown(child_device); | |
3e7ee490 | 829 | |
3e7ee490 HJ |
830 | return; |
831 | } | |
832 | ||
3e7ee490 | 833 | |
3e189519 | 834 | /* |
90c9960e GKH |
835 | * vmbus_device_release - Final callback release of the vmbus child device |
836 | */ | |
3e7ee490 HJ |
837 | static void vmbus_device_release(struct device *device) |
838 | { | |
6bad88da | 839 | struct hv_device *device_ctx = device_to_hv_device(device); |
3e7ee490 | 840 | |
3e7ee490 HJ |
841 | kfree(device_ctx); |
842 | ||
454f18a9 | 843 | /* !!DO NOT REFERENCE device_ctx anymore at this point!! */ |
3e7ee490 HJ |
844 | } |
845 | ||
3e7ee490 | 846 | |
3e7ee490 | 847 | |
90c9960e | 848 | static irqreturn_t vmbus_isr(int irq, void *dev_id) |
3e7ee490 | 849 | { |
90c9960e | 850 | int ret; |
3e7ee490 | 851 | |
480ae58d | 852 | ret = vmbus_on_isr(); |
3e7ee490 | 853 | |
454f18a9 | 854 | /* Schedules a dpc if necessary */ |
90c9960e GKH |
855 | if (ret > 0) { |
856 | if (test_bit(0, (unsigned long *)&ret)) | |
adf874cb | 857 | tasklet_schedule(&vmbus_drv.msg_dpc); |
3e7ee490 | 858 | |
90c9960e | 859 | if (test_bit(1, (unsigned long *)&ret)) |
adf874cb | 860 | tasklet_schedule(&vmbus_drv.event_dpc); |
3e7ee490 | 861 | |
3e7ee490 | 862 | return IRQ_HANDLED; |
90c9960e | 863 | } else { |
3e7ee490 HJ |
864 | return IRQ_NONE; |
865 | } | |
866 | } | |
867 | ||
c22090fa | 868 | |
1168ac22 S |
869 | |
870 | static int __devinit hv_pci_probe(struct pci_dev *pdev, | |
871 | const struct pci_device_id *ent) | |
3e7ee490 | 872 | { |
1168ac22 | 873 | int err; |
3e7ee490 | 874 | |
1168ac22 | 875 | hv_pci_dev = pdev; |
c22090fa | 876 | |
1168ac22 S |
877 | err = pci_enable_device(pdev); |
878 | if (err) | |
879 | return err; | |
3e7ee490 | 880 | |
1168ac22 S |
881 | err = vmbus_bus_init(); |
882 | if (err) | |
883 | pci_disable_device(pdev); | |
884 | ||
885 | return err; | |
3e7ee490 HJ |
886 | } |
887 | ||
9a775dbd GKH |
888 | /* |
889 | * We use a PCI table to determine if we should autoload this driver This is | |
890 | * needed by distro tools to determine if the hyperv drivers should be | |
891 | * installed and/or configured. We don't do anything else with the table, but | |
892 | * it needs to be present. | |
9a775dbd | 893 | */ |
15f0beb1 | 894 | static const struct pci_device_id microsoft_hv_pci_table[] = { |
9a775dbd GKH |
895 | { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */ |
896 | { 0 } | |
897 | }; | |
898 | MODULE_DEVICE_TABLE(pci, microsoft_hv_pci_table); | |
899 | ||
1168ac22 S |
900 | static struct pci_driver hv_bus_driver = { |
901 | .name = "hv_bus", | |
902 | .probe = hv_pci_probe, | |
903 | .id_table = microsoft_hv_pci_table, | |
904 | }; | |
905 | ||
906 | static int __init hv_pci_init(void) | |
907 | { | |
908 | return pci_register_driver(&hv_bus_driver); | |
909 | } | |
910 | ||
911 | static void __exit hv_pci_exit(void) | |
912 | { | |
913 | vmbus_bus_exit(); | |
914 | pci_unregister_driver(&hv_bus_driver); | |
915 | } | |
916 | ||
917 | ||
918 | ||
90c9960e | 919 | MODULE_LICENSE("GPL"); |
26c14cc1 | 920 | MODULE_VERSION(HV_DRV_VERSION); |
3e7ee490 HJ |
921 | module_param(vmbus_irq, int, S_IRUGO); |
922 | module_param(vmbus_loglevel, int, S_IRUGO); | |
3e7ee490 | 923 | |
1168ac22 S |
924 | module_init(hv_pci_init); |
925 | module_exit(hv_pci_exit); |