Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1 | /* |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 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> |
K. Y. Srinivasan | 52e5c1c | 2011-03-15 15:03:34 -0700 | [diff] [blame] | 20 | * |
| 21 | * 3/9/2011: K. Y. Srinivasan - Significant restructuring and cleanup |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 22 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 23 | #include <linux/init.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/device.h> |
| 26 | #include <linux/irq.h> |
| 27 | #include <linux/interrupt.h> |
| 28 | #include <linux/sysctl.h> |
Greg Kroah-Hartman | 9a775db | 2010-02-25 16:42:10 -0800 | [diff] [blame] | 29 | #include <linux/pci.h> |
Greg Kroah-Hartman | c22090f | 2010-02-25 16:43:15 -0800 | [diff] [blame] | 30 | #include <linux/dmi.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 31 | #include <linux/slab.h> |
Haiyang Zhang | 8b5d6d3 | 2010-05-28 23:22:44 +0000 | [diff] [blame] | 32 | #include <linux/completion.h> |
Greg Kroah-Hartman | 2d82f6c | 2010-05-05 22:52:28 -0700 | [diff] [blame] | 33 | #include "version_info.h" |
K. Y. Srinivasan | e3fe0bb | 2011-02-11 10:00:12 -0800 | [diff] [blame] | 34 | #include "hv_api.h" |
Greg Kroah-Hartman | 645954c | 2009-08-28 16:22:59 -0700 | [diff] [blame] | 35 | #include "logging.h" |
Greg Kroah-Hartman | 870cde8 | 2009-08-19 16:21:28 -0700 | [diff] [blame] | 36 | #include "vmbus.h" |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 37 | #include "channel.h" |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 38 | #include "vmbus_private.h" |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 39 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 40 | |
K. Y. Srinivasan | 1168ac2 | 2011-03-15 15:03:32 -0700 | [diff] [blame] | 41 | struct pci_dev *hv_pci_dev; |
| 42 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 43 | /* Main vmbus driver data structure */ |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 44 | struct hv_bus { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 45 | struct bus_type bus; |
| 46 | struct tasklet_struct msg_dpc; |
| 47 | struct tasklet_struct event_dpc; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 48 | }; |
| 49 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 50 | static int vmbus_match(struct device *device, struct device_driver *driver); |
| 51 | static int vmbus_probe(struct device *device); |
| 52 | static int vmbus_remove(struct device *device); |
| 53 | static void vmbus_shutdown(struct device *device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 54 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 55 | static irqreturn_t vmbus_isr(int irq, void *dev_id); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 56 | |
| 57 | static void vmbus_device_release(struct device *device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 58 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 59 | static ssize_t vmbus_show_device_attr(struct device *dev, |
| 60 | struct device_attribute *dev_attr, |
| 61 | char *buf); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 62 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 63 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 64 | unsigned int vmbus_loglevel = (ALL_MODULES << 16 | INFO_LVL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 65 | EXPORT_SYMBOL(vmbus_loglevel); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 66 | /* (ALL_MODULES << 16 | DEBUG_LVL_ENTEREXIT); */ |
| 67 | /* (((VMBUS | VMBUS_DRV)<<16) | DEBUG_LVL_ENTEREXIT); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 68 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 69 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 70 | /* Set up per device attributes in /sys/bus/vmbus/devices/<bus device> */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 71 | static struct device_attribute vmbus_device_attrs[] = { |
| 72 | __ATTR(id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 73 | __ATTR(state, S_IRUGO, vmbus_show_device_attr, NULL), |
| 74 | __ATTR(class_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 75 | __ATTR(device_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 76 | __ATTR(monitor_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 77 | |
| 78 | __ATTR(server_monitor_pending, S_IRUGO, vmbus_show_device_attr, NULL), |
| 79 | __ATTR(server_monitor_latency, S_IRUGO, vmbus_show_device_attr, NULL), |
| 80 | __ATTR(server_monitor_conn_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 81 | |
| 82 | __ATTR(client_monitor_pending, S_IRUGO, vmbus_show_device_attr, NULL), |
| 83 | __ATTR(client_monitor_latency, S_IRUGO, vmbus_show_device_attr, NULL), |
| 84 | __ATTR(client_monitor_conn_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 85 | |
| 86 | __ATTR(out_intr_mask, S_IRUGO, vmbus_show_device_attr, NULL), |
| 87 | __ATTR(out_read_index, S_IRUGO, vmbus_show_device_attr, NULL), |
| 88 | __ATTR(out_write_index, S_IRUGO, vmbus_show_device_attr, NULL), |
| 89 | __ATTR(out_read_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), |
| 90 | __ATTR(out_write_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), |
| 91 | |
| 92 | __ATTR(in_intr_mask, S_IRUGO, vmbus_show_device_attr, NULL), |
| 93 | __ATTR(in_read_index, S_IRUGO, vmbus_show_device_attr, NULL), |
| 94 | __ATTR(in_write_index, S_IRUGO, vmbus_show_device_attr, NULL), |
| 95 | __ATTR(in_read_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), |
| 96 | __ATTR(in_write_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), |
| 97 | __ATTR_NULL |
| 98 | }; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 99 | |
K. Y. Srinivasan | adde248 | 2011-03-15 15:03:37 -0700 | [diff] [blame^] | 100 | /* |
| 101 | * vmbus_uevent - add uevent for our device |
| 102 | * |
| 103 | * This routine is invoked when a device is added or removed on the vmbus to |
| 104 | * generate a uevent to udev in the userspace. The udev will then look at its |
| 105 | * rule and the uevent generated here to load the appropriate driver |
| 106 | */ |
| 107 | static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env) |
| 108 | { |
| 109 | struct hv_device *dev = device_to_hv_device(device); |
| 110 | int ret; |
| 111 | |
| 112 | DPRINT_INFO(VMBUS_DRV, "generating uevent - VMBUS_DEVICE_CLASS_GUID={" |
| 113 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 114 | "%02x%02x%02x%02x%02x%02x%02x%02x}", |
| 115 | dev->dev_type.data[3], dev->dev_type.data[2], |
| 116 | dev->dev_type.data[1], dev->dev_type.data[0], |
| 117 | dev->dev_type.data[5], dev->dev_type.data[4], |
| 118 | dev->dev_type.data[7], dev->dev_type.data[6], |
| 119 | dev->dev_type.data[8], dev->dev_type.data[9], |
| 120 | dev->dev_type.data[10], |
| 121 | dev->dev_type.data[11], |
| 122 | dev->dev_type.data[12], |
| 123 | dev->dev_type.data[13], |
| 124 | dev->dev_type.data[14], |
| 125 | dev->dev_type.data[15]); |
| 126 | |
| 127 | ret = add_uevent_var(env, "VMBUS_DEVICE_CLASS_GUID={" |
| 128 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 129 | "%02x%02x%02x%02x%02x%02x%02x%02x}", |
| 130 | dev->dev_type.data[3], |
| 131 | dev->dev_type.data[2], |
| 132 | dev->dev_type.data[1], |
| 133 | dev->dev_type.data[0], |
| 134 | dev->dev_type.data[5], |
| 135 | dev->dev_type.data[4], |
| 136 | dev->dev_type.data[7], |
| 137 | dev->dev_type.data[6], |
| 138 | dev->dev_type.data[8], |
| 139 | dev->dev_type.data[9], |
| 140 | dev->dev_type.data[10], |
| 141 | dev->dev_type.data[11], |
| 142 | dev->dev_type.data[12], |
| 143 | dev->dev_type.data[13], |
| 144 | dev->dev_type.data[14], |
| 145 | dev->dev_type.data[15]); |
| 146 | |
| 147 | if (ret) |
| 148 | return ret; |
| 149 | |
| 150 | ret = add_uevent_var(env, "VMBUS_DEVICE_DEVICE_GUID={" |
| 151 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 152 | "%02x%02x%02x%02x%02x%02x%02x%02x}", |
| 153 | dev->dev_instance.data[3], |
| 154 | dev->dev_instance.data[2], |
| 155 | dev->dev_instance.data[1], |
| 156 | dev->dev_instance.data[0], |
| 157 | dev->dev_instance.data[5], |
| 158 | dev->dev_instance.data[4], |
| 159 | dev->dev_instance.data[7], |
| 160 | dev->dev_instance.data[6], |
| 161 | dev->dev_instance.data[8], |
| 162 | dev->dev_instance.data[9], |
| 163 | dev->dev_instance.data[10], |
| 164 | dev->dev_instance.data[11], |
| 165 | dev->dev_instance.data[12], |
| 166 | dev->dev_instance.data[13], |
| 167 | dev->dev_instance.data[14], |
| 168 | dev->dev_instance.data[15]); |
| 169 | if (ret) |
| 170 | return ret; |
| 171 | |
| 172 | return 0; |
| 173 | } |
| 174 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 175 | /* The one and only one */ |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 176 | static struct hv_bus hv_bus = { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 177 | .bus.name = "vmbus", |
| 178 | .bus.match = vmbus_match, |
| 179 | .bus.shutdown = vmbus_shutdown, |
| 180 | .bus.remove = vmbus_remove, |
| 181 | .bus.probe = vmbus_probe, |
| 182 | .bus.uevent = vmbus_uevent, |
| 183 | .bus.dev_attrs = vmbus_device_attrs, |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 184 | }; |
| 185 | |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 186 | static const char *driver_name = "hyperv"; |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 187 | |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 188 | |
Timo Teräs | bf6506f | 2010-12-15 20:48:08 +0200 | [diff] [blame] | 189 | struct onmessage_work_context { |
| 190 | struct work_struct work; |
| 191 | struct hv_message msg; |
| 192 | }; |
| 193 | |
| 194 | static void vmbus_onmessage_work(struct work_struct *work) |
| 195 | { |
| 196 | struct onmessage_work_context *ctx; |
| 197 | |
| 198 | ctx = container_of(work, struct onmessage_work_context, |
| 199 | work); |
| 200 | vmbus_onmessage(&ctx->msg); |
| 201 | kfree(ctx); |
| 202 | } |
| 203 | |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 204 | /* |
| 205 | * vmbus_on_msg_dpc - DPC routine to handle messages from the hypervisior |
| 206 | */ |
K. Y. Srinivasan | 62c1059 | 2011-03-10 14:04:53 -0800 | [diff] [blame] | 207 | static void vmbus_on_msg_dpc(unsigned long data) |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 208 | { |
| 209 | int cpu = smp_processor_id(); |
| 210 | void *page_addr = hv_context.synic_message_page[cpu]; |
| 211 | struct hv_message *msg = (struct hv_message *)page_addr + |
| 212 | VMBUS_MESSAGE_SINT; |
Timo Teräs | bf6506f | 2010-12-15 20:48:08 +0200 | [diff] [blame] | 213 | struct onmessage_work_context *ctx; |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 214 | |
| 215 | while (1) { |
| 216 | if (msg->header.message_type == HVMSG_NONE) { |
| 217 | /* no msg */ |
| 218 | break; |
| 219 | } else { |
Timo Teräs | bf6506f | 2010-12-15 20:48:08 +0200 | [diff] [blame] | 220 | ctx = kmalloc(sizeof(*ctx), GFP_ATOMIC); |
| 221 | if (ctx == NULL) |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 222 | continue; |
Timo Teräs | bf6506f | 2010-12-15 20:48:08 +0200 | [diff] [blame] | 223 | INIT_WORK(&ctx->work, vmbus_onmessage_work); |
| 224 | memcpy(&ctx->msg, msg, sizeof(*msg)); |
Haiyang Zhang | da9fcb7 | 2011-01-26 12:12:14 -0800 | [diff] [blame] | 225 | queue_work(vmbus_connection.work_queue, &ctx->work); |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | msg->header.message_type = HVMSG_NONE; |
| 229 | |
| 230 | /* |
| 231 | * Make sure the write to MessageType (ie set to |
| 232 | * HVMSG_NONE) happens before we read the |
| 233 | * MessagePending and EOMing. Otherwise, the EOMing |
| 234 | * will not deliver any more messages since there is |
| 235 | * no empty slot |
| 236 | */ |
| 237 | mb(); |
| 238 | |
| 239 | if (msg->header.message_flags.msg_pending) { |
| 240 | /* |
| 241 | * This will cause message queue rescan to |
| 242 | * possibly deliver another msg from the |
| 243 | * hypervisor |
| 244 | */ |
| 245 | wrmsrl(HV_X64_MSR_EOM, 0); |
| 246 | } |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | /* |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 251 | * vmbus_on_isr - ISR routine |
| 252 | */ |
K. Y. Srinivasan | 480ae58 | 2011-03-10 14:06:06 -0800 | [diff] [blame] | 253 | static int vmbus_on_isr(void) |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 254 | { |
| 255 | int ret = 0; |
| 256 | int cpu = smp_processor_id(); |
| 257 | void *page_addr; |
| 258 | struct hv_message *msg; |
| 259 | union hv_synic_event_flags *event; |
| 260 | |
| 261 | page_addr = hv_context.synic_message_page[cpu]; |
| 262 | msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT; |
| 263 | |
| 264 | /* Check if there are actual msgs to be process */ |
| 265 | if (msg->header.message_type != HVMSG_NONE) { |
| 266 | DPRINT_DBG(VMBUS, "received msg type %d size %d", |
| 267 | msg->header.message_type, |
| 268 | msg->header.payload_size); |
| 269 | ret |= 0x1; |
| 270 | } |
| 271 | |
| 272 | /* TODO: Check if there are events to be process */ |
| 273 | page_addr = hv_context.synic_event_page[cpu]; |
| 274 | event = (union hv_synic_event_flags *)page_addr + VMBUS_MESSAGE_SINT; |
| 275 | |
| 276 | /* Since we are a child, we only need to check bit 0 */ |
| 277 | if (test_and_clear_bit(0, (unsigned long *) &event->flags32[0])) { |
| 278 | DPRINT_DBG(VMBUS, "received event %d", event->flags32[0]); |
| 279 | ret |= 0x2; |
| 280 | } |
| 281 | |
| 282 | return ret; |
| 283 | } |
| 284 | |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 285 | static void get_channel_info(struct hv_device *device, |
| 286 | struct hv_device_info *info) |
| 287 | { |
| 288 | struct vmbus_channel_debug_info debug_info; |
| 289 | |
Greg Kroah-Hartman | cae5b84 | 2010-10-21 09:05:27 -0700 | [diff] [blame] | 290 | if (!device->channel) |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 291 | return; |
| 292 | |
Greg Kroah-Hartman | cae5b84 | 2010-10-21 09:05:27 -0700 | [diff] [blame] | 293 | vmbus_get_debug_info(device->channel, &debug_info); |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 294 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 295 | info->chn_id = debug_info.relid; |
| 296 | info->chn_state = debug_info.state; |
| 297 | memcpy(&info->chn_type, &debug_info.interfacetype, |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 298 | sizeof(struct hv_guid)); |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 299 | memcpy(&info->chn_instance, &debug_info.interface_instance, |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 300 | sizeof(struct hv_guid)); |
| 301 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 302 | info->monitor_id = debug_info.monitorid; |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 303 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 304 | info->server_monitor_pending = debug_info.servermonitor_pending; |
| 305 | info->server_monitor_latency = debug_info.servermonitor_latency; |
| 306 | info->server_monitor_conn_id = debug_info.servermonitor_connectionid; |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 307 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 308 | info->client_monitor_pending = debug_info.clientmonitor_pending; |
| 309 | info->client_monitor_latency = debug_info.clientmonitor_latency; |
| 310 | info->client_monitor_conn_id = debug_info.clientmonitor_connectionid; |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 311 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 312 | info->inbound.int_mask = debug_info.inbound.current_interrupt_mask; |
| 313 | info->inbound.read_idx = debug_info.inbound.current_read_index; |
| 314 | info->inbound.write_idx = debug_info.inbound.current_write_index; |
| 315 | info->inbound.bytes_avail_toread = |
| 316 | debug_info.inbound.bytes_avail_toread; |
| 317 | info->inbound.bytes_avail_towrite = |
Haiyang Zhang | 82f8bd4 | 2010-11-08 14:04:45 -0800 | [diff] [blame] | 318 | debug_info.inbound.bytes_avail_towrite; |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 319 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 320 | info->outbound.int_mask = |
Haiyang Zhang | 82f8bd4 | 2010-11-08 14:04:45 -0800 | [diff] [blame] | 321 | debug_info.outbound.current_interrupt_mask; |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 322 | info->outbound.read_idx = debug_info.outbound.current_read_index; |
| 323 | info->outbound.write_idx = debug_info.outbound.current_write_index; |
| 324 | info->outbound.bytes_avail_toread = |
Haiyang Zhang | 82f8bd4 | 2010-11-08 14:04:45 -0800 | [diff] [blame] | 325 | debug_info.outbound.bytes_avail_toread; |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 326 | info->outbound.bytes_avail_towrite = |
Haiyang Zhang | 82f8bd4 | 2010-11-08 14:04:45 -0800 | [diff] [blame] | 327 | debug_info.outbound.bytes_avail_towrite; |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 328 | } |
| 329 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 330 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 331 | * vmbus_show_device_attr - Show the device attribute in sysfs. |
| 332 | * |
| 333 | * This is invoked when user does a |
| 334 | * "cat /sys/bus/vmbus/devices/<busdevice>/<attr name>" |
| 335 | */ |
| 336 | static ssize_t vmbus_show_device_attr(struct device *dev, |
| 337 | struct device_attribute *dev_attr, |
| 338 | char *buf) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 339 | { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 340 | struct hv_device *device_ctx = device_to_hv_device(dev); |
Greg Kroah-Hartman | ee3d7dd | 2009-08-20 12:17:36 -0700 | [diff] [blame] | 341 | struct hv_device_info device_info; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 342 | |
Greg Kroah-Hartman | ee3d7dd | 2009-08-20 12:17:36 -0700 | [diff] [blame] | 343 | memset(&device_info, 0, sizeof(struct hv_device_info)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 344 | |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 345 | get_channel_info(device_ctx, &device_info); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 346 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 347 | if (!strcmp(dev_attr->attr.name, "class_id")) { |
| 348 | return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 349 | "%02x%02x%02x%02x%02x%02x%02x%02x}\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 350 | device_info.chn_type.data[3], |
| 351 | device_info.chn_type.data[2], |
| 352 | device_info.chn_type.data[1], |
| 353 | device_info.chn_type.data[0], |
| 354 | device_info.chn_type.data[5], |
| 355 | device_info.chn_type.data[4], |
| 356 | device_info.chn_type.data[7], |
| 357 | device_info.chn_type.data[6], |
| 358 | device_info.chn_type.data[8], |
| 359 | device_info.chn_type.data[9], |
| 360 | device_info.chn_type.data[10], |
| 361 | device_info.chn_type.data[11], |
| 362 | device_info.chn_type.data[12], |
| 363 | device_info.chn_type.data[13], |
| 364 | device_info.chn_type.data[14], |
| 365 | device_info.chn_type.data[15]); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 366 | } else if (!strcmp(dev_attr->attr.name, "device_id")) { |
| 367 | return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 368 | "%02x%02x%02x%02x%02x%02x%02x%02x}\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 369 | device_info.chn_instance.data[3], |
| 370 | device_info.chn_instance.data[2], |
| 371 | device_info.chn_instance.data[1], |
| 372 | device_info.chn_instance.data[0], |
| 373 | device_info.chn_instance.data[5], |
| 374 | device_info.chn_instance.data[4], |
| 375 | device_info.chn_instance.data[7], |
| 376 | device_info.chn_instance.data[6], |
| 377 | device_info.chn_instance.data[8], |
| 378 | device_info.chn_instance.data[9], |
| 379 | device_info.chn_instance.data[10], |
| 380 | device_info.chn_instance.data[11], |
| 381 | device_info.chn_instance.data[12], |
| 382 | device_info.chn_instance.data[13], |
| 383 | device_info.chn_instance.data[14], |
| 384 | device_info.chn_instance.data[15]); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 385 | } else if (!strcmp(dev_attr->attr.name, "state")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 386 | return sprintf(buf, "%d\n", device_info.chn_state); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 387 | } else if (!strcmp(dev_attr->attr.name, "id")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 388 | return sprintf(buf, "%d\n", device_info.chn_id); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 389 | } else if (!strcmp(dev_attr->attr.name, "out_intr_mask")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 390 | return sprintf(buf, "%d\n", device_info.outbound.int_mask); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 391 | } else if (!strcmp(dev_attr->attr.name, "out_read_index")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 392 | return sprintf(buf, "%d\n", device_info.outbound.read_idx); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 393 | } else if (!strcmp(dev_attr->attr.name, "out_write_index")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 394 | return sprintf(buf, "%d\n", device_info.outbound.write_idx); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 395 | } else if (!strcmp(dev_attr->attr.name, "out_read_bytes_avail")) { |
| 396 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 397 | device_info.outbound.bytes_avail_toread); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 398 | } else if (!strcmp(dev_attr->attr.name, "out_write_bytes_avail")) { |
| 399 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 400 | device_info.outbound.bytes_avail_towrite); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 401 | } else if (!strcmp(dev_attr->attr.name, "in_intr_mask")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 402 | return sprintf(buf, "%d\n", device_info.inbound.int_mask); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 403 | } else if (!strcmp(dev_attr->attr.name, "in_read_index")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 404 | return sprintf(buf, "%d\n", device_info.inbound.read_idx); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 405 | } else if (!strcmp(dev_attr->attr.name, "in_write_index")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 406 | return sprintf(buf, "%d\n", device_info.inbound.write_idx); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 407 | } else if (!strcmp(dev_attr->attr.name, "in_read_bytes_avail")) { |
| 408 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 409 | device_info.inbound.bytes_avail_toread); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 410 | } else if (!strcmp(dev_attr->attr.name, "in_write_bytes_avail")) { |
| 411 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 412 | device_info.inbound.bytes_avail_towrite); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 413 | } else if (!strcmp(dev_attr->attr.name, "monitor_id")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 414 | return sprintf(buf, "%d\n", device_info.monitor_id); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 415 | } else if (!strcmp(dev_attr->attr.name, "server_monitor_pending")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 416 | return sprintf(buf, "%d\n", device_info.server_monitor_pending); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 417 | } else if (!strcmp(dev_attr->attr.name, "server_monitor_latency")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 418 | return sprintf(buf, "%d\n", device_info.server_monitor_latency); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 419 | } else if (!strcmp(dev_attr->attr.name, "server_monitor_conn_id")) { |
| 420 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 421 | device_info.server_monitor_conn_id); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 422 | } else if (!strcmp(dev_attr->attr.name, "client_monitor_pending")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 423 | return sprintf(buf, "%d\n", device_info.client_monitor_pending); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 424 | } else if (!strcmp(dev_attr->attr.name, "client_monitor_latency")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 425 | return sprintf(buf, "%d\n", device_info.client_monitor_latency); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 426 | } else if (!strcmp(dev_attr->attr.name, "client_monitor_conn_id")) { |
| 427 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 428 | device_info.client_monitor_conn_id); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 429 | } else { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 430 | return 0; |
| 431 | } |
| 432 | } |
| 433 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 434 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 435 | * vmbus_bus_init -Main vmbus driver initialization routine. |
| 436 | * |
| 437 | * Here, we |
Lars Lindley | 0686e4f | 2010-03-11 23:51:23 +0100 | [diff] [blame] | 438 | * - initialize the vmbus driver context |
Lars Lindley | 0686e4f | 2010-03-11 23:51:23 +0100 | [diff] [blame] | 439 | * - invoke the vmbus hv main init routine |
| 440 | * - get the irq resource |
Lars Lindley | 0686e4f | 2010-03-11 23:51:23 +0100 | [diff] [blame] | 441 | * - retrieve the channel offers |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 442 | */ |
K. Y. Srinivasan | 52e5c1c | 2011-03-15 15:03:34 -0700 | [diff] [blame] | 443 | static int vmbus_bus_init(struct pci_dev *pdev) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 444 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 445 | int ret; |
| 446 | unsigned int vector; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 447 | |
Greg Kroah-Hartman | 6d26e38fa2 | 2010-12-02 12:08:08 -0800 | [diff] [blame] | 448 | DPRINT_INFO(VMBUS, "+++++++ HV Driver version = %s +++++++", |
| 449 | HV_DRV_VERSION); |
| 450 | DPRINT_INFO(VMBUS, "+++++++ Vmbus supported version = %d +++++++", |
| 451 | VMBUS_REVISION_NUMBER); |
| 452 | DPRINT_INFO(VMBUS, "+++++++ Vmbus using SINT %d +++++++", |
| 453 | VMBUS_MESSAGE_SINT); |
| 454 | DPRINT_DBG(VMBUS, "sizeof(vmbus_channel_packet_page_buffer)=%zd, " |
| 455 | "sizeof(VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER)=%zd", |
| 456 | sizeof(struct vmbus_channel_packet_page_buffer), |
| 457 | sizeof(struct vmbus_channel_packet_multipage_buffer)); |
| 458 | |
Greg Kroah-Hartman | 6d26e38fa2 | 2010-12-02 12:08:08 -0800 | [diff] [blame] | 459 | |
| 460 | /* Hypervisor initialization...setup hypercall page..etc */ |
| 461 | ret = hv_init(); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 462 | if (ret != 0) { |
Greg Kroah-Hartman | 6d26e38fa2 | 2010-12-02 12:08:08 -0800 | [diff] [blame] | 463 | DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x", |
| 464 | ret); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 465 | goto cleanup; |
| 466 | } |
| 467 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 468 | |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 469 | hv_bus.bus.name = driver_name; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 470 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 471 | /* Initialize the bus context */ |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 472 | tasklet_init(&hv_bus.msg_dpc, vmbus_on_msg_dpc, |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 473 | (unsigned long)NULL); |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 474 | tasklet_init(&hv_bus.event_dpc, vmbus_on_event, |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 475 | (unsigned long)NULL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 476 | |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 477 | /* Now, register the bus with LDM */ |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 478 | ret = bus_register(&hv_bus.bus); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 479 | if (ret) { |
Bill Pemberton | c19fbca | 2009-07-27 16:47:35 -0400 | [diff] [blame] | 480 | ret = -1; |
| 481 | goto cleanup; |
| 482 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 483 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 484 | /* Get the interrupt resource */ |
K. Y. Srinivasan | 52e5c1c | 2011-03-15 15:03:34 -0700 | [diff] [blame] | 485 | ret = request_irq(pdev->irq, vmbus_isr, |
| 486 | IRQF_SHARED | IRQF_SAMPLE_RANDOM, |
| 487 | driver_name, pdev); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 488 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 489 | if (ret != 0) { |
| 490 | DPRINT_ERR(VMBUS_DRV, "ERROR - Unable to request IRQ %d", |
K. Y. Srinivasan | 52e5c1c | 2011-03-15 15:03:34 -0700 | [diff] [blame] | 491 | pdev->irq); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 492 | |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 493 | bus_unregister(&hv_bus.bus); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 494 | |
| 495 | ret = -1; |
| 496 | goto cleanup; |
| 497 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 498 | |
K. Y. Srinivasan | 52e5c1c | 2011-03-15 15:03:34 -0700 | [diff] [blame] | 499 | vector = IRQ0_VECTOR + pdev->irq; |
| 500 | DPRINT_INFO(VMBUS_DRV, "irq 0x%x vector 0x%x", pdev->irq, |
| 501 | vector); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 502 | |
K. Y. Srinivasan | 800b690 | 2011-03-15 15:03:33 -0700 | [diff] [blame] | 503 | /* |
| 504 | * Notify the hypervisor of our irq and |
| 505 | * connect to the host. |
| 506 | */ |
| 507 | on_each_cpu(hv_synic_init, (void *)&vector, 1); |
| 508 | ret = vmbus_connect(); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 509 | if (ret) { |
K. Y. Srinivasan | 52e5c1c | 2011-03-15 15:03:34 -0700 | [diff] [blame] | 510 | free_irq(pdev->irq, pdev); |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 511 | bus_unregister(&hv_bus.bus); |
Bill Pemberton | 5d48a1c | 2009-07-27 16:47:36 -0400 | [diff] [blame] | 512 | goto cleanup; |
| 513 | } |
| 514 | |
K. Y. Srinivasan | 800b690 | 2011-03-15 15:03:33 -0700 | [diff] [blame] | 515 | |
Greg Kroah-Hartman | 2d6e882 | 2010-12-02 08:50:58 -0800 | [diff] [blame] | 516 | vmbus_request_offers(); |
Haiyang Zhang | 8b5d6d3 | 2010-05-28 23:22:44 +0000 | [diff] [blame] | 517 | wait_for_completion(&hv_channel_ready); |
| 518 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 519 | cleanup: |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 520 | return ret; |
| 521 | } |
| 522 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 523 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 524 | * vmbus_bus_exit - Terminate the vmbus driver. |
| 525 | * |
| 526 | * This routine is opposite of vmbus_bus_init() |
| 527 | */ |
Greg Kroah-Hartman | bd1de70 | 2009-07-29 09:04:51 -0700 | [diff] [blame] | 528 | static void vmbus_bus_exit(void) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 529 | { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 530 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 531 | |
K. Y. Srinivasan | f51b359 | 2011-03-10 14:06:31 -0800 | [diff] [blame] | 532 | vmbus_release_unattached_channels(); |
| 533 | vmbus_disconnect(); |
| 534 | on_each_cpu(hv_synic_cleanup, NULL, 1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 535 | |
K. Y. Srinivasan | ece0e32 | 2011-03-10 14:06:55 -0800 | [diff] [blame] | 536 | hv_cleanup(); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 537 | |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 538 | bus_unregister(&hv_bus.bus); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 539 | |
K. Y. Srinivasan | 52e5c1c | 2011-03-15 15:03:34 -0700 | [diff] [blame] | 540 | free_irq(hv_pci_dev->irq, hv_pci_dev); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 541 | |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 542 | tasklet_kill(&hv_bus.msg_dpc); |
| 543 | tasklet_kill(&hv_bus.event_dpc); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 544 | } |
| 545 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 546 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 547 | /** |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 548 | * vmbus_child_driver_register() - Register a vmbus's child driver |
K. Y. Srinivasan | c643269d | 2011-03-07 13:23:43 -0800 | [diff] [blame] | 549 | * @drv: Pointer to driver structure you want to register |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 550 | * |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 551 | * |
| 552 | * Registers the given driver with Linux through the 'driver_register()' call |
| 553 | * And sets up the hyper-v vmbus handling for this driver. |
| 554 | * It will return the state of the 'driver_register()' call. |
| 555 | * |
| 556 | * Mainly used by Hyper-V drivers. |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 557 | */ |
K. Y. Srinivasan | c643269d | 2011-03-07 13:23:43 -0800 | [diff] [blame] | 558 | int vmbus_child_driver_register(struct device_driver *drv) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 559 | { |
Bill Pemberton | 5d48a1c | 2009-07-27 16:47:36 -0400 | [diff] [blame] | 560 | int ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 561 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 562 | DPRINT_INFO(VMBUS_DRV, "child driver (%p) registering - name %s", |
K. Y. Srinivasan | c643269d | 2011-03-07 13:23:43 -0800 | [diff] [blame] | 563 | drv, drv->name); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 564 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 565 | /* The child driver on this vmbus */ |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 566 | drv->bus = &hv_bus.bus; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 567 | |
K. Y. Srinivasan | c643269d | 2011-03-07 13:23:43 -0800 | [diff] [blame] | 568 | ret = driver_register(drv); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 569 | |
Greg Kroah-Hartman | 2d6e882 | 2010-12-02 08:50:58 -0800 | [diff] [blame] | 570 | vmbus_request_offers(); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 571 | |
Bill Pemberton | 5d48a1c | 2009-07-27 16:47:36 -0400 | [diff] [blame] | 572 | return ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 573 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 574 | EXPORT_SYMBOL(vmbus_child_driver_register); |
| 575 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 576 | /** |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 577 | * vmbus_child_driver_unregister() - Unregister a vmbus's child driver |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 578 | * @drv: Pointer to driver structure you want to un-register |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 579 | * |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 580 | * |
| 581 | * Un-register the given driver with Linux through the 'driver_unregister()' |
| 582 | * call. And ungegisters the driver from the Hyper-V vmbus handler. |
| 583 | * |
| 584 | * Mainly used by Hyper-V drivers. |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 585 | */ |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 586 | void vmbus_child_driver_unregister(struct device_driver *drv) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 587 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 588 | DPRINT_INFO(VMBUS_DRV, "child driver (%p) unregistering - name %s", |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 589 | drv, drv->name); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 590 | |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 591 | driver_unregister(drv); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 592 | |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 593 | drv->bus = NULL; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 594 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 595 | EXPORT_SYMBOL(vmbus_child_driver_unregister); |
| 596 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 597 | /* |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 598 | * vmbus_child_device_create - Creates and registers a new child device |
| 599 | * on the vmbus. |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 600 | */ |
Greg Kroah-Hartman | 89733aa | 2010-12-02 08:22:41 -0800 | [diff] [blame] | 601 | struct hv_device *vmbus_child_device_create(struct hv_guid *type, |
| 602 | struct hv_guid *instance, |
| 603 | struct vmbus_channel *channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 604 | { |
Nicolas Palix | 3d3b551 | 2009-07-28 17:32:53 +0200 | [diff] [blame] | 605 | struct hv_device *child_device_obj; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 606 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 607 | /* Allocate the new child device */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 608 | child_device_obj = kzalloc(sizeof(struct hv_device), GFP_KERNEL); |
| 609 | if (!child_device_obj) { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 610 | DPRINT_ERR(VMBUS_DRV, |
| 611 | "unable to allocate device_context for child device"); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 612 | return NULL; |
| 613 | } |
| 614 | |
| 615 | DPRINT_DBG(VMBUS_DRV, "child device (%p) allocated - " |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 616 | "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 617 | "%02x%02x%02x%02x%02x%02x%02x%02x}," |
| 618 | "id {%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 619 | "%02x%02x%02x%02x%02x%02x%02x%02x}", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 620 | &child_device_obj->device, |
Greg Kroah-Hartman | daaa8cc | 2009-08-19 16:18:56 -0700 | [diff] [blame] | 621 | type->data[3], type->data[2], type->data[1], type->data[0], |
| 622 | type->data[5], type->data[4], type->data[7], type->data[6], |
| 623 | type->data[8], type->data[9], type->data[10], type->data[11], |
| 624 | type->data[12], type->data[13], type->data[14], type->data[15], |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 625 | instance->data[3], instance->data[2], |
| 626 | instance->data[1], instance->data[0], |
| 627 | instance->data[5], instance->data[4], |
| 628 | instance->data[7], instance->data[6], |
| 629 | instance->data[8], instance->data[9], |
| 630 | instance->data[10], instance->data[11], |
| 631 | instance->data[12], instance->data[13], |
| 632 | instance->data[14], instance->data[15]); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 633 | |
Greg Kroah-Hartman | cae5b84 | 2010-10-21 09:05:27 -0700 | [diff] [blame] | 634 | child_device_obj->channel = channel; |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 635 | memcpy(&child_device_obj->dev_type, type, sizeof(struct hv_guid)); |
| 636 | memcpy(&child_device_obj->dev_instance, instance, |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 637 | sizeof(struct hv_guid)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 638 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 639 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 640 | return child_device_obj; |
| 641 | } |
| 642 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 643 | /* |
K. Y. Srinivasan | e13a0b5 | 2011-03-10 14:07:44 -0800 | [diff] [blame] | 644 | * vmbus_child_device_register - Register the child device |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 645 | */ |
K. Y. Srinivasan | 3ca07cb | 2011-03-10 14:07:21 -0800 | [diff] [blame] | 646 | int vmbus_child_device_register(struct hv_device *child_device_obj) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 647 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 648 | int ret = 0; |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 649 | |
Bill Pemberton | f488841 | 2009-07-29 17:00:12 -0400 | [diff] [blame] | 650 | static atomic_t device_num = ATOMIC_INIT(0); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 651 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 652 | DPRINT_DBG(VMBUS_DRV, "child device (%p) registering", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 653 | child_device_obj); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 654 | |
Haiyang Zhang | 1bb40a2 | 2009-10-23 18:14:24 +0000 | [diff] [blame] | 655 | /* Set the device name. Otherwise, device_register() will fail. */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 656 | dev_set_name(&child_device_obj->device, "vmbus_0_%d", |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 657 | atomic_inc_return(&device_num)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 658 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 659 | /* The new device belongs to this bus */ |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 660 | child_device_obj->device.bus = &hv_bus.bus; /* device->dev.bus; */ |
K. Y. Srinivasan | 800b690 | 2011-03-15 15:03:33 -0700 | [diff] [blame] | 661 | child_device_obj->device.parent = &hv_pci_dev->dev; |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 662 | child_device_obj->device.release = vmbus_device_release; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 663 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 664 | /* |
| 665 | * Register with the LDM. This will kick off the driver/device |
| 666 | * binding...which will eventually call vmbus_match() and vmbus_probe() |
| 667 | */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 668 | ret = device_register(&child_device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 669 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 670 | /* vmbus_probe() error does not get propergate to device_register(). */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 671 | ret = child_device_obj->probe_error; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 672 | |
| 673 | if (ret) |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 674 | DPRINT_ERR(VMBUS_DRV, "unable to register child device (%p)", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 675 | &child_device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 676 | else |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 677 | DPRINT_INFO(VMBUS_DRV, "child device (%p) registered", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 678 | &child_device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 679 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 680 | return ret; |
| 681 | } |
| 682 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 683 | /* |
| 684 | * vmbus_child_device_unregister - Remove the specified child device |
| 685 | * from the vmbus. |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 686 | */ |
Greg Kroah-Hartman | 9d8bd71 | 2010-12-02 08:34:45 -0800 | [diff] [blame] | 687 | void vmbus_child_device_unregister(struct hv_device *device_obj) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 688 | { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 689 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 690 | DPRINT_INFO(VMBUS_DRV, "unregistering child device (%p)", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 691 | &device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 692 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 693 | /* |
| 694 | * Kick off the process of unregistering the device. |
| 695 | * This will call vmbus_remove() and eventually vmbus_device_release() |
| 696 | */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 697 | device_unregister(&device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 698 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 699 | DPRINT_INFO(VMBUS_DRV, "child device (%p) unregistered", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 700 | &device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 701 | } |
| 702 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 703 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 704 | * vmbus_match - Attempt to match the specified device to the specified driver |
| 705 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 706 | static int vmbus_match(struct device *device, struct device_driver *driver) |
| 707 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 708 | int match = 0; |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 709 | struct hv_driver *drv = drv_to_hv_drv(driver); |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 710 | struct hv_device *device_ctx = device_to_hv_device(device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 711 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 712 | /* We found our driver ? */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 713 | if (memcmp(&device_ctx->dev_type, &drv->dev_type, |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 714 | sizeof(struct hv_guid)) == 0) { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 715 | |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 716 | device_ctx->drv = drv->priv; |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 717 | DPRINT_INFO(VMBUS_DRV, |
| 718 | "device object (%p) set to driver object (%p)", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 719 | &device_ctx, |
| 720 | device_ctx->drv); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 721 | |
| 722 | match = 1; |
| 723 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 724 | return match; |
| 725 | } |
| 726 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 727 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 728 | * vmbus_probe_failed_cb - Callback when a driver probe failed in vmbus_probe() |
| 729 | * |
| 730 | * We need a callback because we cannot invoked device_unregister() inside |
| 731 | * vmbus_probe() since vmbus_probe() may be invoked inside device_register() |
| 732 | * i.e. we cannot call device_unregister() inside device_register() |
| 733 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 734 | static void vmbus_probe_failed_cb(struct work_struct *context) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 735 | { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 736 | struct hv_device *device_ctx = (struct hv_device *)context; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 737 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 738 | /* |
| 739 | * Kick off the process of unregistering the device. |
| 740 | * This will call vmbus_remove() and eventually vmbus_device_release() |
| 741 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 742 | device_unregister(&device_ctx->device); |
| 743 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 744 | /* put_device(&device_ctx->device); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 745 | } |
| 746 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 747 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 748 | * vmbus_probe - Add the new vmbus's child device |
| 749 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 750 | static int vmbus_probe(struct device *child_device) |
| 751 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 752 | int ret = 0; |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 753 | struct hv_driver *drv = |
| 754 | drv_to_hv_drv(child_device->driver); |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 755 | struct hv_device *dev = device_to_hv_device(child_device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 756 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 757 | /* Let the specific open-source driver handles the probe if it can */ |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 758 | if (drv->driver.probe) { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 759 | ret = dev->probe_error = |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 760 | drv->driver.probe(child_device); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 761 | if (ret != 0) { |
| 762 | DPRINT_ERR(VMBUS_DRV, "probe() failed for device %s " |
| 763 | "(%p) on driver %s (%d)...", |
| 764 | dev_name(child_device), child_device, |
| 765 | child_device->driver->name, ret); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 766 | |
K. Y. Srinivasan | a3c7fe9 | 2011-03-07 13:34:27 -0800 | [diff] [blame] | 767 | INIT_WORK(&dev->probe_failed_work_item, |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 768 | vmbus_probe_failed_cb); |
K. Y. Srinivasan | a3c7fe9 | 2011-03-07 13:34:27 -0800 | [diff] [blame] | 769 | schedule_work(&dev->probe_failed_work_item); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 770 | } |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 771 | } else { |
| 772 | DPRINT_ERR(VMBUS_DRV, "probe() method not set for driver - %s", |
| 773 | child_device->driver->name); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 774 | ret = -1; |
| 775 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 776 | return ret; |
| 777 | } |
| 778 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 779 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 780 | * vmbus_remove - Remove a vmbus device |
| 781 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 782 | static int vmbus_remove(struct device *child_device) |
| 783 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 784 | int ret; |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 785 | struct hv_driver *drv; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 786 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 787 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 788 | if (child_device->driver) { |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 789 | drv = drv_to_hv_drv(child_device->driver); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 790 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 791 | /* |
| 792 | * Let the specific open-source driver handles the removal if |
| 793 | * it can |
| 794 | */ |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 795 | if (drv->driver.remove) { |
| 796 | ret = drv->driver.remove(child_device); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 797 | } else { |
| 798 | DPRINT_ERR(VMBUS_DRV, |
| 799 | "remove() method not set for driver - %s", |
| 800 | child_device->driver->name); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 801 | ret = -1; |
| 802 | } |
| 803 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 804 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 805 | return 0; |
| 806 | } |
| 807 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 808 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 809 | * vmbus_shutdown - Shutdown a vmbus device |
| 810 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 811 | static void vmbus_shutdown(struct device *child_device) |
| 812 | { |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 813 | struct hv_driver *drv; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 814 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 815 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 816 | /* The device may not be attached yet */ |
Greg Kroah-Hartman | 83c720e | 2010-07-22 15:14:04 -0700 | [diff] [blame] | 817 | if (!child_device->driver) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 818 | return; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 819 | |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 820 | drv = drv_to_hv_drv(child_device->driver); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 821 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 822 | /* Let the specific open-source driver handles the removal if it can */ |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 823 | if (drv->driver.shutdown) |
| 824 | drv->driver.shutdown(child_device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 825 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 826 | return; |
| 827 | } |
| 828 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 829 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 830 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 831 | * vmbus_device_release - Final callback release of the vmbus child device |
| 832 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 833 | static void vmbus_device_release(struct device *device) |
| 834 | { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 835 | struct hv_device *device_ctx = device_to_hv_device(device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 836 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 837 | kfree(device_ctx); |
| 838 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 839 | /* !!DO NOT REFERENCE device_ctx anymore at this point!! */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 840 | } |
| 841 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 842 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 843 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 844 | static irqreturn_t vmbus_isr(int irq, void *dev_id) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 845 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 846 | int ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 847 | |
K. Y. Srinivasan | 480ae58 | 2011-03-10 14:06:06 -0800 | [diff] [blame] | 848 | ret = vmbus_on_isr(); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 849 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 850 | /* Schedules a dpc if necessary */ |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 851 | if (ret > 0) { |
| 852 | if (test_bit(0, (unsigned long *)&ret)) |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 853 | tasklet_schedule(&hv_bus.msg_dpc); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 854 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 855 | if (test_bit(1, (unsigned long *)&ret)) |
K. Y. Srinivasan | 04677c0 | 2011-03-15 15:03:35 -0700 | [diff] [blame] | 856 | tasklet_schedule(&hv_bus.event_dpc); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 857 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 858 | return IRQ_HANDLED; |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 859 | } else { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 860 | return IRQ_NONE; |
| 861 | } |
| 862 | } |
| 863 | |
Greg Kroah-Hartman | c22090f | 2010-02-25 16:43:15 -0800 | [diff] [blame] | 864 | |
K. Y. Srinivasan | 1168ac2 | 2011-03-15 15:03:32 -0700 | [diff] [blame] | 865 | |
| 866 | static int __devinit hv_pci_probe(struct pci_dev *pdev, |
| 867 | const struct pci_device_id *ent) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 868 | { |
K. Y. Srinivasan | 1168ac2 | 2011-03-15 15:03:32 -0700 | [diff] [blame] | 869 | int err; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 870 | |
K. Y. Srinivasan | 1168ac2 | 2011-03-15 15:03:32 -0700 | [diff] [blame] | 871 | hv_pci_dev = pdev; |
Greg Kroah-Hartman | c22090f | 2010-02-25 16:43:15 -0800 | [diff] [blame] | 872 | |
K. Y. Srinivasan | 1168ac2 | 2011-03-15 15:03:32 -0700 | [diff] [blame] | 873 | err = pci_enable_device(pdev); |
| 874 | if (err) |
| 875 | return err; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 876 | |
K. Y. Srinivasan | 52e5c1c | 2011-03-15 15:03:34 -0700 | [diff] [blame] | 877 | err = vmbus_bus_init(pdev); |
K. Y. Srinivasan | 1168ac2 | 2011-03-15 15:03:32 -0700 | [diff] [blame] | 878 | if (err) |
| 879 | pci_disable_device(pdev); |
| 880 | |
| 881 | return err; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 882 | } |
| 883 | |
Greg Kroah-Hartman | 9a775db | 2010-02-25 16:42:10 -0800 | [diff] [blame] | 884 | /* |
| 885 | * We use a PCI table to determine if we should autoload this driver This is |
| 886 | * needed by distro tools to determine if the hyperv drivers should be |
| 887 | * installed and/or configured. We don't do anything else with the table, but |
| 888 | * it needs to be present. |
Greg Kroah-Hartman | 9a775db | 2010-02-25 16:42:10 -0800 | [diff] [blame] | 889 | */ |
Tobias Klauser | 15f0beb | 2010-05-20 10:39:38 +0200 | [diff] [blame] | 890 | static const struct pci_device_id microsoft_hv_pci_table[] = { |
Greg Kroah-Hartman | 9a775db | 2010-02-25 16:42:10 -0800 | [diff] [blame] | 891 | { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */ |
| 892 | { 0 } |
| 893 | }; |
| 894 | MODULE_DEVICE_TABLE(pci, microsoft_hv_pci_table); |
| 895 | |
K. Y. Srinivasan | 1168ac2 | 2011-03-15 15:03:32 -0700 | [diff] [blame] | 896 | static struct pci_driver hv_bus_driver = { |
| 897 | .name = "hv_bus", |
| 898 | .probe = hv_pci_probe, |
| 899 | .id_table = microsoft_hv_pci_table, |
| 900 | }; |
| 901 | |
| 902 | static int __init hv_pci_init(void) |
| 903 | { |
| 904 | return pci_register_driver(&hv_bus_driver); |
| 905 | } |
| 906 | |
| 907 | static void __exit hv_pci_exit(void) |
| 908 | { |
| 909 | vmbus_bus_exit(); |
| 910 | pci_unregister_driver(&hv_bus_driver); |
| 911 | } |
| 912 | |
| 913 | |
| 914 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 915 | MODULE_LICENSE("GPL"); |
Hank Janssen | 26c14cc | 2010-02-11 23:02:42 +0000 | [diff] [blame] | 916 | MODULE_VERSION(HV_DRV_VERSION); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 917 | module_param(vmbus_loglevel, int, S_IRUGO); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 918 | |
K. Y. Srinivasan | 1168ac2 | 2011-03-15 15:03:32 -0700 | [diff] [blame] | 919 | module_init(hv_pci_init); |
| 920 | module_exit(hv_pci_exit); |