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> |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 20 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 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> |
Greg Kroah-Hartman | 9a775db | 2010-02-25 16:42:10 -0800 | [diff] [blame] | 27 | #include <linux/pci.h> |
Greg Kroah-Hartman | c22090f | 2010-02-25 16:43:15 -0800 | [diff] [blame] | 28 | #include <linux/dmi.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 29 | #include <linux/slab.h> |
Haiyang Zhang | 8b5d6d3 | 2010-05-28 23:22:44 +0000 | [diff] [blame] | 30 | #include <linux/completion.h> |
Greg Kroah-Hartman | 2d82f6c | 2010-05-05 22:52:28 -0700 | [diff] [blame] | 31 | #include "version_info.h" |
K. Y. Srinivasan | e3fe0bb | 2011-02-11 10:00:12 -0800 | [diff] [blame] | 32 | #include "hv_api.h" |
Greg Kroah-Hartman | 645954c | 2009-08-28 16:22:59 -0700 | [diff] [blame] | 33 | #include "logging.h" |
Greg Kroah-Hartman | 870cde8 | 2009-08-19 16:21:28 -0700 | [diff] [blame] | 34 | #include "vmbus.h" |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 35 | #include "channel.h" |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 36 | #include "vmbus_private.h" |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 37 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 38 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 39 | /* FIXME! We need to do this dynamically for PIC and APIC system */ |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 40 | #define VMBUS_IRQ 0x5 |
| 41 | #define VMBUS_IRQ_VECTOR IRQ5_VECTOR |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 42 | |
| 43 | /* Main vmbus driver data structure */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 44 | struct vmbus_driver_context { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 45 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 46 | struct bus_type bus; |
| 47 | struct tasklet_struct msg_dpc; |
| 48 | struct tasklet_struct event_dpc; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 49 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 50 | /* The bus root device */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 51 | struct hv_device device_ctx; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 52 | }; |
| 53 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 54 | static int vmbus_match(struct device *device, struct device_driver *driver); |
| 55 | static int vmbus_probe(struct device *device); |
| 56 | static int vmbus_remove(struct device *device); |
| 57 | static void vmbus_shutdown(struct device *device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 58 | static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 59 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 60 | static irqreturn_t vmbus_isr(int irq, void *dev_id); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 61 | |
| 62 | static void vmbus_device_release(struct device *device); |
| 63 | static void vmbus_bus_release(struct device *device); |
| 64 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 65 | static ssize_t vmbus_show_device_attr(struct device *dev, |
| 66 | struct device_attribute *dev_attr, |
| 67 | char *buf); |
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 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 70 | unsigned int vmbus_loglevel = (ALL_MODULES << 16 | INFO_LVL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 71 | EXPORT_SYMBOL(vmbus_loglevel); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 72 | /* (ALL_MODULES << 16 | DEBUG_LVL_ENTEREXIT); */ |
| 73 | /* (((VMBUS | VMBUS_DRV)<<16) | DEBUG_LVL_ENTEREXIT); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 74 | |
| 75 | static int vmbus_irq = VMBUS_IRQ; |
| 76 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 77 | /* Set up per device attributes in /sys/bus/vmbus/devices/<bus device> */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 78 | static struct device_attribute vmbus_device_attrs[] = { |
| 79 | __ATTR(id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 80 | __ATTR(state, S_IRUGO, vmbus_show_device_attr, NULL), |
| 81 | __ATTR(class_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 82 | __ATTR(device_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 83 | __ATTR(monitor_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 84 | |
| 85 | __ATTR(server_monitor_pending, S_IRUGO, vmbus_show_device_attr, NULL), |
| 86 | __ATTR(server_monitor_latency, S_IRUGO, vmbus_show_device_attr, NULL), |
| 87 | __ATTR(server_monitor_conn_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 88 | |
| 89 | __ATTR(client_monitor_pending, S_IRUGO, vmbus_show_device_attr, NULL), |
| 90 | __ATTR(client_monitor_latency, S_IRUGO, vmbus_show_device_attr, NULL), |
| 91 | __ATTR(client_monitor_conn_id, S_IRUGO, vmbus_show_device_attr, NULL), |
| 92 | |
| 93 | __ATTR(out_intr_mask, S_IRUGO, vmbus_show_device_attr, NULL), |
| 94 | __ATTR(out_read_index, S_IRUGO, vmbus_show_device_attr, NULL), |
| 95 | __ATTR(out_write_index, S_IRUGO, vmbus_show_device_attr, NULL), |
| 96 | __ATTR(out_read_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), |
| 97 | __ATTR(out_write_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), |
| 98 | |
| 99 | __ATTR(in_intr_mask, S_IRUGO, vmbus_show_device_attr, NULL), |
| 100 | __ATTR(in_read_index, S_IRUGO, vmbus_show_device_attr, NULL), |
| 101 | __ATTR(in_write_index, S_IRUGO, vmbus_show_device_attr, NULL), |
| 102 | __ATTR(in_read_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), |
| 103 | __ATTR(in_write_bytes_avail, S_IRUGO, vmbus_show_device_attr, NULL), |
| 104 | __ATTR_NULL |
| 105 | }; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 106 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 107 | /* The one and only one */ |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 108 | static struct vmbus_driver_context vmbus_drv = { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 109 | .bus.name = "vmbus", |
| 110 | .bus.match = vmbus_match, |
| 111 | .bus.shutdown = vmbus_shutdown, |
| 112 | .bus.remove = vmbus_remove, |
| 113 | .bus.probe = vmbus_probe, |
| 114 | .bus.uevent = vmbus_uevent, |
| 115 | .bus.dev_attrs = vmbus_device_attrs, |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 116 | }; |
| 117 | |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 118 | static const char *driver_name = "hyperv"; |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 119 | |
| 120 | /* |
| 121 | * Windows vmbus does not defined this. |
| 122 | * We defined this to be consistent with other devices |
| 123 | */ |
| 124 | /* {c5295816-f63a-4d5f-8d1a-4daf999ca185} */ |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 125 | static const struct hv_guid device_type = { |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 126 | .data = { |
| 127 | 0x16, 0x58, 0x29, 0xc5, 0x3a, 0xf6, 0x5f, 0x4d, |
| 128 | 0x8d, 0x1a, 0x4d, 0xaf, 0x99, 0x9c, 0xa1, 0x85 |
| 129 | } |
| 130 | }; |
| 131 | |
| 132 | /* {ac3760fc-9adf-40aa-9427-a70ed6de95c5} */ |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 133 | static const struct hv_guid device_id = { |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 134 | .data = { |
| 135 | 0xfc, 0x60, 0x37, 0xac, 0xdf, 0x9a, 0xaa, 0x40, |
| 136 | 0x94, 0x27, 0xa7, 0x0e, 0xd6, 0xde, 0x95, 0xc5 |
| 137 | } |
| 138 | }; |
| 139 | |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 140 | static struct hv_device *vmbus_device; /* vmbus root device */ |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 141 | |
| 142 | /* |
Haiyang Zhang | 646f1ea | 2011-01-26 12:12:10 -0800 | [diff] [blame] | 143 | * vmbus_child_dev_add - Registers the child device with the vmbus |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 144 | */ |
Haiyang Zhang | 646f1ea | 2011-01-26 12:12:10 -0800 | [diff] [blame] | 145 | int vmbus_child_dev_add(struct hv_device *child_dev) |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 146 | { |
K. Y. Srinivasan | 3ca07cb | 2011-03-10 14:07:21 -0800 | [diff] [blame^] | 147 | return vmbus_child_device_register(child_dev); |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | /* |
Haiyang Zhang | 646f1ea | 2011-01-26 12:12:10 -0800 | [diff] [blame] | 151 | * vmbus_dev_add - Callback when the root bus device is added |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 152 | */ |
Haiyang Zhang | 646f1ea | 2011-01-26 12:12:10 -0800 | [diff] [blame] | 153 | static int vmbus_dev_add(struct hv_device *dev, void *info) |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 154 | { |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 155 | u32 *irqvector = info; |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 156 | int ret; |
| 157 | |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 158 | vmbus_device = dev; |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 159 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 160 | memcpy(&vmbus_device->dev_type, &device_type, sizeof(struct hv_guid)); |
| 161 | memcpy(&vmbus_device->dev_instance, &device_id, |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 162 | sizeof(struct hv_guid)); |
| 163 | |
| 164 | /* strcpy(dev->name, "vmbus"); */ |
| 165 | /* SynIC setup... */ |
| 166 | on_each_cpu(hv_synic_init, (void *)irqvector, 1); |
| 167 | |
| 168 | /* Connect to VMBus in the root partition */ |
Haiyang Zhang | c697767 | 2011-01-26 12:12:08 -0800 | [diff] [blame] | 169 | ret = vmbus_connect(); |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 170 | |
| 171 | /* VmbusSendEvent(device->localPortId+1); */ |
| 172 | return ret; |
| 173 | } |
| 174 | |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 175 | |
Timo Teräs | bf6506f | 2010-12-15 20:48:08 +0200 | [diff] [blame] | 176 | struct onmessage_work_context { |
| 177 | struct work_struct work; |
| 178 | struct hv_message msg; |
| 179 | }; |
| 180 | |
| 181 | static void vmbus_onmessage_work(struct work_struct *work) |
| 182 | { |
| 183 | struct onmessage_work_context *ctx; |
| 184 | |
| 185 | ctx = container_of(work, struct onmessage_work_context, |
| 186 | work); |
| 187 | vmbus_onmessage(&ctx->msg); |
| 188 | kfree(ctx); |
| 189 | } |
| 190 | |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 191 | /* |
| 192 | * vmbus_on_msg_dpc - DPC routine to handle messages from the hypervisior |
| 193 | */ |
K. Y. Srinivasan | 62c1059 | 2011-03-10 14:04:53 -0800 | [diff] [blame] | 194 | static void vmbus_on_msg_dpc(unsigned long data) |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 195 | { |
| 196 | int cpu = smp_processor_id(); |
| 197 | void *page_addr = hv_context.synic_message_page[cpu]; |
| 198 | struct hv_message *msg = (struct hv_message *)page_addr + |
| 199 | VMBUS_MESSAGE_SINT; |
Timo Teräs | bf6506f | 2010-12-15 20:48:08 +0200 | [diff] [blame] | 200 | struct onmessage_work_context *ctx; |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 201 | |
| 202 | while (1) { |
| 203 | if (msg->header.message_type == HVMSG_NONE) { |
| 204 | /* no msg */ |
| 205 | break; |
| 206 | } else { |
Timo Teräs | bf6506f | 2010-12-15 20:48:08 +0200 | [diff] [blame] | 207 | ctx = kmalloc(sizeof(*ctx), GFP_ATOMIC); |
| 208 | if (ctx == NULL) |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 209 | continue; |
Timo Teräs | bf6506f | 2010-12-15 20:48:08 +0200 | [diff] [blame] | 210 | INIT_WORK(&ctx->work, vmbus_onmessage_work); |
| 211 | memcpy(&ctx->msg, msg, sizeof(*msg)); |
Haiyang Zhang | da9fcb7 | 2011-01-26 12:12:14 -0800 | [diff] [blame] | 212 | queue_work(vmbus_connection.work_queue, &ctx->work); |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | msg->header.message_type = HVMSG_NONE; |
| 216 | |
| 217 | /* |
| 218 | * Make sure the write to MessageType (ie set to |
| 219 | * HVMSG_NONE) happens before we read the |
| 220 | * MessagePending and EOMing. Otherwise, the EOMing |
| 221 | * will not deliver any more messages since there is |
| 222 | * no empty slot |
| 223 | */ |
| 224 | mb(); |
| 225 | |
| 226 | if (msg->header.message_flags.msg_pending) { |
| 227 | /* |
| 228 | * This will cause message queue rescan to |
| 229 | * possibly deliver another msg from the |
| 230 | * hypervisor |
| 231 | */ |
| 232 | wrmsrl(HV_X64_MSR_EOM, 0); |
| 233 | } |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | /* |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 238 | * vmbus_on_isr - ISR routine |
| 239 | */ |
K. Y. Srinivasan | 480ae58 | 2011-03-10 14:06:06 -0800 | [diff] [blame] | 240 | static int vmbus_on_isr(void) |
Greg Kroah-Hartman | 36199a9 | 2010-12-02 11:59:22 -0800 | [diff] [blame] | 241 | { |
| 242 | int ret = 0; |
| 243 | int cpu = smp_processor_id(); |
| 244 | void *page_addr; |
| 245 | struct hv_message *msg; |
| 246 | union hv_synic_event_flags *event; |
| 247 | |
| 248 | page_addr = hv_context.synic_message_page[cpu]; |
| 249 | msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT; |
| 250 | |
| 251 | /* Check if there are actual msgs to be process */ |
| 252 | if (msg->header.message_type != HVMSG_NONE) { |
| 253 | DPRINT_DBG(VMBUS, "received msg type %d size %d", |
| 254 | msg->header.message_type, |
| 255 | msg->header.payload_size); |
| 256 | ret |= 0x1; |
| 257 | } |
| 258 | |
| 259 | /* TODO: Check if there are events to be process */ |
| 260 | page_addr = hv_context.synic_event_page[cpu]; |
| 261 | event = (union hv_synic_event_flags *)page_addr + VMBUS_MESSAGE_SINT; |
| 262 | |
| 263 | /* Since we are a child, we only need to check bit 0 */ |
| 264 | if (test_and_clear_bit(0, (unsigned long *) &event->flags32[0])) { |
| 265 | DPRINT_DBG(VMBUS, "received event %d", event->flags32[0]); |
| 266 | ret |= 0x2; |
| 267 | } |
| 268 | |
| 269 | return ret; |
| 270 | } |
| 271 | |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 272 | static void get_channel_info(struct hv_device *device, |
| 273 | struct hv_device_info *info) |
| 274 | { |
| 275 | struct vmbus_channel_debug_info debug_info; |
| 276 | |
Greg Kroah-Hartman | cae5b84 | 2010-10-21 09:05:27 -0700 | [diff] [blame] | 277 | if (!device->channel) |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 278 | return; |
| 279 | |
Greg Kroah-Hartman | cae5b84 | 2010-10-21 09:05:27 -0700 | [diff] [blame] | 280 | vmbus_get_debug_info(device->channel, &debug_info); |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 281 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 282 | info->chn_id = debug_info.relid; |
| 283 | info->chn_state = debug_info.state; |
| 284 | memcpy(&info->chn_type, &debug_info.interfacetype, |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 285 | sizeof(struct hv_guid)); |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 286 | memcpy(&info->chn_instance, &debug_info.interface_instance, |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 287 | sizeof(struct hv_guid)); |
| 288 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 289 | info->monitor_id = debug_info.monitorid; |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 290 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 291 | info->server_monitor_pending = debug_info.servermonitor_pending; |
| 292 | info->server_monitor_latency = debug_info.servermonitor_latency; |
| 293 | info->server_monitor_conn_id = debug_info.servermonitor_connectionid; |
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->client_monitor_pending = debug_info.clientmonitor_pending; |
| 296 | info->client_monitor_latency = debug_info.clientmonitor_latency; |
| 297 | info->client_monitor_conn_id = debug_info.clientmonitor_connectionid; |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 298 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 299 | info->inbound.int_mask = debug_info.inbound.current_interrupt_mask; |
| 300 | info->inbound.read_idx = debug_info.inbound.current_read_index; |
| 301 | info->inbound.write_idx = debug_info.inbound.current_write_index; |
| 302 | info->inbound.bytes_avail_toread = |
| 303 | debug_info.inbound.bytes_avail_toread; |
| 304 | info->inbound.bytes_avail_towrite = |
Haiyang Zhang | 82f8bd4 | 2010-11-08 14:04:45 -0800 | [diff] [blame] | 305 | debug_info.inbound.bytes_avail_towrite; |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 306 | |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 307 | info->outbound.int_mask = |
Haiyang Zhang | 82f8bd4 | 2010-11-08 14:04:45 -0800 | [diff] [blame] | 308 | debug_info.outbound.current_interrupt_mask; |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 309 | info->outbound.read_idx = debug_info.outbound.current_read_index; |
| 310 | info->outbound.write_idx = debug_info.outbound.current_write_index; |
| 311 | info->outbound.bytes_avail_toread = |
Haiyang Zhang | 82f8bd4 | 2010-11-08 14:04:45 -0800 | [diff] [blame] | 312 | debug_info.outbound.bytes_avail_toread; |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 313 | info->outbound.bytes_avail_towrite = |
Haiyang Zhang | 82f8bd4 | 2010-11-08 14:04:45 -0800 | [diff] [blame] | 314 | debug_info.outbound.bytes_avail_towrite; |
Greg Kroah-Hartman | 150b19d | 2010-10-20 16:07:11 -0700 | [diff] [blame] | 315 | } |
| 316 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 317 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 318 | * vmbus_show_device_attr - Show the device attribute in sysfs. |
| 319 | * |
| 320 | * This is invoked when user does a |
| 321 | * "cat /sys/bus/vmbus/devices/<busdevice>/<attr name>" |
| 322 | */ |
| 323 | static ssize_t vmbus_show_device_attr(struct device *dev, |
| 324 | struct device_attribute *dev_attr, |
| 325 | char *buf) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 326 | { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 327 | struct hv_device *device_ctx = device_to_hv_device(dev); |
Greg Kroah-Hartman | ee3d7dd | 2009-08-20 12:17:36 -0700 | [diff] [blame] | 328 | struct hv_device_info device_info; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 329 | |
Greg Kroah-Hartman | ee3d7dd | 2009-08-20 12:17:36 -0700 | [diff] [blame] | 330 | memset(&device_info, 0, sizeof(struct hv_device_info)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 331 | |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 332 | get_channel_info(device_ctx, &device_info); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 333 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 334 | if (!strcmp(dev_attr->attr.name, "class_id")) { |
| 335 | return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 336 | "%02x%02x%02x%02x%02x%02x%02x%02x}\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 337 | device_info.chn_type.data[3], |
| 338 | device_info.chn_type.data[2], |
| 339 | device_info.chn_type.data[1], |
| 340 | device_info.chn_type.data[0], |
| 341 | device_info.chn_type.data[5], |
| 342 | device_info.chn_type.data[4], |
| 343 | device_info.chn_type.data[7], |
| 344 | device_info.chn_type.data[6], |
| 345 | device_info.chn_type.data[8], |
| 346 | device_info.chn_type.data[9], |
| 347 | device_info.chn_type.data[10], |
| 348 | device_info.chn_type.data[11], |
| 349 | device_info.chn_type.data[12], |
| 350 | device_info.chn_type.data[13], |
| 351 | device_info.chn_type.data[14], |
| 352 | device_info.chn_type.data[15]); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 353 | } else if (!strcmp(dev_attr->attr.name, "device_id")) { |
| 354 | return sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 355 | "%02x%02x%02x%02x%02x%02x%02x%02x}\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 356 | device_info.chn_instance.data[3], |
| 357 | device_info.chn_instance.data[2], |
| 358 | device_info.chn_instance.data[1], |
| 359 | device_info.chn_instance.data[0], |
| 360 | device_info.chn_instance.data[5], |
| 361 | device_info.chn_instance.data[4], |
| 362 | device_info.chn_instance.data[7], |
| 363 | device_info.chn_instance.data[6], |
| 364 | device_info.chn_instance.data[8], |
| 365 | device_info.chn_instance.data[9], |
| 366 | device_info.chn_instance.data[10], |
| 367 | device_info.chn_instance.data[11], |
| 368 | device_info.chn_instance.data[12], |
| 369 | device_info.chn_instance.data[13], |
| 370 | device_info.chn_instance.data[14], |
| 371 | device_info.chn_instance.data[15]); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 372 | } else if (!strcmp(dev_attr->attr.name, "state")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 373 | return sprintf(buf, "%d\n", device_info.chn_state); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 374 | } else if (!strcmp(dev_attr->attr.name, "id")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 375 | return sprintf(buf, "%d\n", device_info.chn_id); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 376 | } else if (!strcmp(dev_attr->attr.name, "out_intr_mask")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 377 | return sprintf(buf, "%d\n", device_info.outbound.int_mask); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 378 | } else if (!strcmp(dev_attr->attr.name, "out_read_index")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 379 | return sprintf(buf, "%d\n", device_info.outbound.read_idx); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 380 | } else if (!strcmp(dev_attr->attr.name, "out_write_index")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 381 | return sprintf(buf, "%d\n", device_info.outbound.write_idx); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 382 | } else if (!strcmp(dev_attr->attr.name, "out_read_bytes_avail")) { |
| 383 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 384 | device_info.outbound.bytes_avail_toread); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 385 | } else if (!strcmp(dev_attr->attr.name, "out_write_bytes_avail")) { |
| 386 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 387 | device_info.outbound.bytes_avail_towrite); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 388 | } else if (!strcmp(dev_attr->attr.name, "in_intr_mask")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 389 | return sprintf(buf, "%d\n", device_info.inbound.int_mask); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 390 | } else if (!strcmp(dev_attr->attr.name, "in_read_index")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 391 | return sprintf(buf, "%d\n", device_info.inbound.read_idx); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 392 | } else if (!strcmp(dev_attr->attr.name, "in_write_index")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 393 | return sprintf(buf, "%d\n", device_info.inbound.write_idx); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 394 | } else if (!strcmp(dev_attr->attr.name, "in_read_bytes_avail")) { |
| 395 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 396 | device_info.inbound.bytes_avail_toread); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 397 | } else if (!strcmp(dev_attr->attr.name, "in_write_bytes_avail")) { |
| 398 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 399 | device_info.inbound.bytes_avail_towrite); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 400 | } else if (!strcmp(dev_attr->attr.name, "monitor_id")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 401 | return sprintf(buf, "%d\n", device_info.monitor_id); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 402 | } else if (!strcmp(dev_attr->attr.name, "server_monitor_pending")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 403 | return sprintf(buf, "%d\n", device_info.server_monitor_pending); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 404 | } else if (!strcmp(dev_attr->attr.name, "server_monitor_latency")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 405 | return sprintf(buf, "%d\n", device_info.server_monitor_latency); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 406 | } else if (!strcmp(dev_attr->attr.name, "server_monitor_conn_id")) { |
| 407 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 408 | device_info.server_monitor_conn_id); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 409 | } else if (!strcmp(dev_attr->attr.name, "client_monitor_pending")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 410 | return sprintf(buf, "%d\n", device_info.client_monitor_pending); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 411 | } else if (!strcmp(dev_attr->attr.name, "client_monitor_latency")) { |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 412 | return sprintf(buf, "%d\n", device_info.client_monitor_latency); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 413 | } else if (!strcmp(dev_attr->attr.name, "client_monitor_conn_id")) { |
| 414 | return sprintf(buf, "%d\n", |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 415 | device_info.client_monitor_conn_id); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 416 | } else { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 417 | return 0; |
| 418 | } |
| 419 | } |
| 420 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 421 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 422 | * vmbus_bus_init -Main vmbus driver initialization routine. |
| 423 | * |
| 424 | * Here, we |
Lars Lindley | 0686e4f | 2010-03-11 23:51:23 +0100 | [diff] [blame] | 425 | * - initialize the vmbus driver context |
| 426 | * - setup various driver entry points |
| 427 | * - invoke the vmbus hv main init routine |
| 428 | * - get the irq resource |
| 429 | * - invoke the vmbus to add the vmbus root device |
| 430 | * - setup the vmbus root device |
| 431 | * - retrieve the channel offers |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 432 | */ |
Greg Kroah-Hartman | 6c88455 | 2010-12-02 12:04:00 -0800 | [diff] [blame] | 433 | static int vmbus_bus_init(void) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 434 | { |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 435 | struct vmbus_driver_context *vmbus_drv_ctx = &vmbus_drv; |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 436 | struct hv_device *dev_ctx = &vmbus_drv.device_ctx; |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 437 | int ret; |
| 438 | unsigned int vector; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 439 | |
Greg Kroah-Hartman | 6d26e38fa2 | 2010-12-02 12:08:08 -0800 | [diff] [blame] | 440 | DPRINT_INFO(VMBUS, "+++++++ HV Driver version = %s +++++++", |
| 441 | HV_DRV_VERSION); |
| 442 | DPRINT_INFO(VMBUS, "+++++++ Vmbus supported version = %d +++++++", |
| 443 | VMBUS_REVISION_NUMBER); |
| 444 | DPRINT_INFO(VMBUS, "+++++++ Vmbus using SINT %d +++++++", |
| 445 | VMBUS_MESSAGE_SINT); |
| 446 | DPRINT_DBG(VMBUS, "sizeof(vmbus_channel_packet_page_buffer)=%zd, " |
| 447 | "sizeof(VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER)=%zd", |
| 448 | sizeof(struct vmbus_channel_packet_page_buffer), |
| 449 | sizeof(struct vmbus_channel_packet_multipage_buffer)); |
| 450 | |
Greg Kroah-Hartman | 6d26e38fa2 | 2010-12-02 12:08:08 -0800 | [diff] [blame] | 451 | |
| 452 | /* Hypervisor initialization...setup hypercall page..etc */ |
| 453 | ret = hv_init(); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 454 | if (ret != 0) { |
Greg Kroah-Hartman | 6d26e38fa2 | 2010-12-02 12:08:08 -0800 | [diff] [blame] | 455 | DPRINT_ERR(VMBUS, "Unable to initialize the hypervisor - 0x%x", |
| 456 | ret); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 457 | goto cleanup; |
| 458 | } |
| 459 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 460 | |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 461 | vmbus_drv_ctx->bus.name = driver_name; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 462 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 463 | /* Initialize the bus context */ |
K. Y. Srinivasan | 62c1059 | 2011-03-10 14:04:53 -0800 | [diff] [blame] | 464 | tasklet_init(&vmbus_drv_ctx->msg_dpc, vmbus_on_msg_dpc, |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 465 | (unsigned long)NULL); |
K. Y. Srinivasan | 6de3d6a | 2011-03-10 14:05:16 -0800 | [diff] [blame] | 466 | tasklet_init(&vmbus_drv_ctx->event_dpc, vmbus_on_event, |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 467 | (unsigned long)NULL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 468 | |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 469 | /* Now, register the bus with LDM */ |
Bill Pemberton | c19fbca | 2009-07-27 16:47:35 -0400 | [diff] [blame] | 470 | ret = bus_register(&vmbus_drv_ctx->bus); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 471 | if (ret) { |
Bill Pemberton | c19fbca | 2009-07-27 16:47:35 -0400 | [diff] [blame] | 472 | ret = -1; |
| 473 | goto cleanup; |
| 474 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 475 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 476 | /* Get the interrupt resource */ |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 477 | ret = request_irq(vmbus_irq, vmbus_isr, IRQF_SAMPLE_RANDOM, |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 478 | driver_name, NULL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 479 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 480 | if (ret != 0) { |
| 481 | DPRINT_ERR(VMBUS_DRV, "ERROR - Unable to request IRQ %d", |
| 482 | vmbus_irq); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 483 | |
| 484 | bus_unregister(&vmbus_drv_ctx->bus); |
| 485 | |
| 486 | ret = -1; |
| 487 | goto cleanup; |
| 488 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 489 | vector = VMBUS_IRQ_VECTOR; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 490 | |
| 491 | DPRINT_INFO(VMBUS_DRV, "irq 0x%x vector 0x%x", vmbus_irq, vector); |
| 492 | |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 493 | /* Add the root device */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 494 | memset(dev_ctx, 0, sizeof(struct hv_device)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 495 | |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 496 | ret = vmbus_dev_add(dev_ctx, &vector); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 497 | if (ret != 0) { |
| 498 | DPRINT_ERR(VMBUS_DRV, |
| 499 | "ERROR - Unable to add vmbus root device"); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 500 | |
| 501 | free_irq(vmbus_irq, NULL); |
| 502 | |
| 503 | bus_unregister(&vmbus_drv_ctx->bus); |
| 504 | |
| 505 | ret = -1; |
| 506 | goto cleanup; |
| 507 | } |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 508 | /* strcpy(dev_ctx->device.bus_id, dev_ctx->device_obj.name); */ |
Greg Kroah-Hartman | 09d50ff | 2009-07-13 17:09:34 -0700 | [diff] [blame] | 509 | dev_set_name(&dev_ctx->device, "vmbus_0_0"); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 510 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 511 | /* No need to bind a driver to the root device. */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 512 | dev_ctx->device.parent = NULL; |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 513 | /* NULL; vmbus_remove() does not get invoked */ |
| 514 | dev_ctx->device.bus = &vmbus_drv_ctx->bus; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 515 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 516 | /* Setup the device dispatch table */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 517 | dev_ctx->device.release = vmbus_bus_release; |
| 518 | |
K. Y. Srinivasan | a6e4d8e | 2011-03-10 14:03:51 -0800 | [diff] [blame] | 519 | /* register the root device */ |
Bill Pemberton | 5d48a1c | 2009-07-27 16:47:36 -0400 | [diff] [blame] | 520 | ret = device_register(&dev_ctx->device); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 521 | if (ret) { |
| 522 | DPRINT_ERR(VMBUS_DRV, |
| 523 | "ERROR - Unable to register vmbus root device"); |
Bill Pemberton | 5d48a1c | 2009-07-27 16:47:36 -0400 | [diff] [blame] | 524 | |
| 525 | free_irq(vmbus_irq, NULL); |
| 526 | bus_unregister(&vmbus_drv_ctx->bus); |
| 527 | |
| 528 | ret = -1; |
| 529 | goto cleanup; |
| 530 | } |
| 531 | |
Greg Kroah-Hartman | 2d6e882 | 2010-12-02 08:50:58 -0800 | [diff] [blame] | 532 | vmbus_request_offers(); |
Haiyang Zhang | 8b5d6d3 | 2010-05-28 23:22:44 +0000 | [diff] [blame] | 533 | wait_for_completion(&hv_channel_ready); |
| 534 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 535 | cleanup: |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 536 | return ret; |
| 537 | } |
| 538 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 539 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 540 | * vmbus_bus_exit - Terminate the vmbus driver. |
| 541 | * |
| 542 | * This routine is opposite of vmbus_bus_init() |
| 543 | */ |
Greg Kroah-Hartman | bd1de70 | 2009-07-29 09:04:51 -0700 | [diff] [blame] | 544 | static void vmbus_bus_exit(void) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 545 | { |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 546 | struct vmbus_driver_context *vmbus_drv_ctx = &vmbus_drv; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 547 | |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 548 | struct hv_device *dev_ctx = &vmbus_drv.device_ctx; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 549 | |
K. Y. Srinivasan | f51b359 | 2011-03-10 14:06:31 -0800 | [diff] [blame] | 550 | vmbus_release_unattached_channels(); |
| 551 | vmbus_disconnect(); |
| 552 | on_each_cpu(hv_synic_cleanup, NULL, 1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 553 | |
K. Y. Srinivasan | ece0e32 | 2011-03-10 14:06:55 -0800 | [diff] [blame] | 554 | hv_cleanup(); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 555 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 556 | /* Unregister the root bus device */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 557 | device_unregister(&dev_ctx->device); |
| 558 | |
| 559 | bus_unregister(&vmbus_drv_ctx->bus); |
| 560 | |
| 561 | free_irq(vmbus_irq, NULL); |
| 562 | |
| 563 | tasklet_kill(&vmbus_drv_ctx->msg_dpc); |
| 564 | tasklet_kill(&vmbus_drv_ctx->event_dpc); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 565 | } |
| 566 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 567 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 568 | /** |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 569 | * vmbus_child_driver_register() - Register a vmbus's child driver |
K. Y. Srinivasan | c643269d | 2011-03-07 13:23:43 -0800 | [diff] [blame] | 570 | * @drv: Pointer to driver structure you want to register |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 571 | * |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 572 | * |
| 573 | * Registers the given driver with Linux through the 'driver_register()' call |
| 574 | * And sets up the hyper-v vmbus handling for this driver. |
| 575 | * It will return the state of the 'driver_register()' call. |
| 576 | * |
| 577 | * Mainly used by Hyper-V drivers. |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 578 | */ |
K. Y. Srinivasan | c643269d | 2011-03-07 13:23:43 -0800 | [diff] [blame] | 579 | int vmbus_child_driver_register(struct device_driver *drv) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 580 | { |
Bill Pemberton | 5d48a1c | 2009-07-27 16:47:36 -0400 | [diff] [blame] | 581 | int ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 582 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 583 | DPRINT_INFO(VMBUS_DRV, "child driver (%p) registering - name %s", |
K. Y. Srinivasan | c643269d | 2011-03-07 13:23:43 -0800 | [diff] [blame] | 584 | drv, drv->name); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 585 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 586 | /* The child driver on this vmbus */ |
K. Y. Srinivasan | c643269d | 2011-03-07 13:23:43 -0800 | [diff] [blame] | 587 | drv->bus = &vmbus_drv.bus; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 588 | |
K. Y. Srinivasan | c643269d | 2011-03-07 13:23:43 -0800 | [diff] [blame] | 589 | ret = driver_register(drv); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 590 | |
Greg Kroah-Hartman | 2d6e882 | 2010-12-02 08:50:58 -0800 | [diff] [blame] | 591 | vmbus_request_offers(); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 592 | |
Bill Pemberton | 5d48a1c | 2009-07-27 16:47:36 -0400 | [diff] [blame] | 593 | return ret; |
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_register); |
| 596 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 597 | /** |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 598 | * vmbus_child_driver_unregister() - Unregister a vmbus's child driver |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 599 | * @drv: Pointer to driver structure you want to un-register |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 600 | * |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 601 | * |
| 602 | * Un-register the given driver with Linux through the 'driver_unregister()' |
| 603 | * call. And ungegisters the driver from the Hyper-V vmbus handler. |
| 604 | * |
| 605 | * Mainly used by Hyper-V drivers. |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 606 | */ |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 607 | void vmbus_child_driver_unregister(struct device_driver *drv) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 608 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 609 | DPRINT_INFO(VMBUS_DRV, "child driver (%p) unregistering - name %s", |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 610 | drv, drv->name); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 611 | |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 612 | driver_unregister(drv); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 613 | |
K. Y. Srinivasan | 06de23f | 2011-03-07 13:24:23 -0800 | [diff] [blame] | 614 | drv->bus = NULL; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 615 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 616 | EXPORT_SYMBOL(vmbus_child_driver_unregister); |
| 617 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 618 | /* |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 619 | * vmbus_child_device_create - Creates and registers a new child device |
| 620 | * on the vmbus. |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 621 | */ |
Greg Kroah-Hartman | 89733aa | 2010-12-02 08:22:41 -0800 | [diff] [blame] | 622 | struct hv_device *vmbus_child_device_create(struct hv_guid *type, |
| 623 | struct hv_guid *instance, |
| 624 | struct vmbus_channel *channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 625 | { |
Nicolas Palix | 3d3b551 | 2009-07-28 17:32:53 +0200 | [diff] [blame] | 626 | struct hv_device *child_device_obj; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 627 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 628 | /* Allocate the new child device */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 629 | child_device_obj = kzalloc(sizeof(struct hv_device), GFP_KERNEL); |
| 630 | if (!child_device_obj) { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 631 | DPRINT_ERR(VMBUS_DRV, |
| 632 | "unable to allocate device_context for child device"); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 633 | return NULL; |
| 634 | } |
| 635 | |
| 636 | DPRINT_DBG(VMBUS_DRV, "child device (%p) allocated - " |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 637 | "type {%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 638 | "%02x%02x%02x%02x%02x%02x%02x%02x}," |
| 639 | "id {%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 640 | "%02x%02x%02x%02x%02x%02x%02x%02x}", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 641 | &child_device_obj->device, |
Greg Kroah-Hartman | daaa8cc | 2009-08-19 16:18:56 -0700 | [diff] [blame] | 642 | type->data[3], type->data[2], type->data[1], type->data[0], |
| 643 | type->data[5], type->data[4], type->data[7], type->data[6], |
| 644 | type->data[8], type->data[9], type->data[10], type->data[11], |
| 645 | 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] | 646 | instance->data[3], instance->data[2], |
| 647 | instance->data[1], instance->data[0], |
| 648 | instance->data[5], instance->data[4], |
| 649 | instance->data[7], instance->data[6], |
| 650 | instance->data[8], instance->data[9], |
| 651 | instance->data[10], instance->data[11], |
| 652 | instance->data[12], instance->data[13], |
| 653 | instance->data[14], instance->data[15]); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 654 | |
Greg Kroah-Hartman | cae5b84 | 2010-10-21 09:05:27 -0700 | [diff] [blame] | 655 | child_device_obj->channel = channel; |
Haiyang Zhang | ca623ad | 2011-01-26 12:12:11 -0800 | [diff] [blame] | 656 | memcpy(&child_device_obj->dev_type, type, sizeof(struct hv_guid)); |
| 657 | memcpy(&child_device_obj->dev_instance, instance, |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 658 | sizeof(struct hv_guid)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 659 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 660 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 661 | return child_device_obj; |
| 662 | } |
| 663 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 664 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 665 | * vmbus_child_device_register - Register the child device on the specified bus |
| 666 | */ |
K. Y. Srinivasan | 3ca07cb | 2011-03-10 14:07:21 -0800 | [diff] [blame^] | 667 | int vmbus_child_device_register(struct hv_device *child_device_obj) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 668 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 669 | int ret = 0; |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 670 | |
Bill Pemberton | f488841 | 2009-07-29 17:00:12 -0400 | [diff] [blame] | 671 | static atomic_t device_num = ATOMIC_INIT(0); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 672 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 673 | DPRINT_DBG(VMBUS_DRV, "child device (%p) registering", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 674 | child_device_obj); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 675 | |
Haiyang Zhang | 1bb40a2 | 2009-10-23 18:14:24 +0000 | [diff] [blame] | 676 | /* Set the device name. Otherwise, device_register() will fail. */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 677 | dev_set_name(&child_device_obj->device, "vmbus_0_%d", |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 678 | atomic_inc_return(&device_num)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 679 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 680 | /* The new device belongs to this bus */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 681 | child_device_obj->device.bus = &vmbus_drv.bus; /* device->dev.bus; */ |
K. Y. Srinivasan | 3ca07cb | 2011-03-10 14:07:21 -0800 | [diff] [blame^] | 682 | child_device_obj->device.parent = &vmbus_device->device; |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 683 | child_device_obj->device.release = vmbus_device_release; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 684 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 685 | /* |
| 686 | * Register with the LDM. This will kick off the driver/device |
| 687 | * binding...which will eventually call vmbus_match() and vmbus_probe() |
| 688 | */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 689 | ret = device_register(&child_device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 690 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 691 | /* vmbus_probe() error does not get propergate to device_register(). */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 692 | ret = child_device_obj->probe_error; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 693 | |
| 694 | if (ret) |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 695 | DPRINT_ERR(VMBUS_DRV, "unable to register child device (%p)", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 696 | &child_device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 697 | else |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 698 | DPRINT_INFO(VMBUS_DRV, "child device (%p) registered", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 699 | &child_device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 700 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 701 | return ret; |
| 702 | } |
| 703 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 704 | /* |
| 705 | * vmbus_child_device_unregister - Remove the specified child device |
| 706 | * from the vmbus. |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 707 | */ |
Greg Kroah-Hartman | 9d8bd71 | 2010-12-02 08:34:45 -0800 | [diff] [blame] | 708 | void vmbus_child_device_unregister(struct hv_device *device_obj) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 709 | { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 710 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 711 | DPRINT_INFO(VMBUS_DRV, "unregistering child device (%p)", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 712 | &device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 713 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 714 | /* |
| 715 | * Kick off the process of unregistering the device. |
| 716 | * This will call vmbus_remove() and eventually vmbus_device_release() |
| 717 | */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 718 | device_unregister(&device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 719 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 720 | DPRINT_INFO(VMBUS_DRV, "child device (%p) unregistered", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 721 | &device_obj->device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 722 | } |
| 723 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 724 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 725 | * vmbus_uevent - add uevent for our device |
| 726 | * |
| 727 | * This routine is invoked when a device is added or removed on the vmbus to |
| 728 | * generate a uevent to udev in the userspace. The udev will then look at its |
| 729 | * rule and the uevent generated here to load the appropriate driver |
| 730 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 731 | static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env) |
| 732 | { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 733 | struct hv_device *dev = device_to_hv_device(device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 734 | int ret; |
| 735 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 736 | DPRINT_INFO(VMBUS_DRV, "generating uevent - VMBUS_DEVICE_CLASS_GUID={" |
| 737 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 738 | "%02x%02x%02x%02x%02x%02x%02x%02x}", |
K. Y. Srinivasan | 65c2279 | 2011-03-07 13:35:10 -0800 | [diff] [blame] | 739 | dev->dev_type.data[3], dev->dev_type.data[2], |
| 740 | dev->dev_type.data[1], dev->dev_type.data[0], |
| 741 | dev->dev_type.data[5], dev->dev_type.data[4], |
| 742 | dev->dev_type.data[7], dev->dev_type.data[6], |
| 743 | dev->dev_type.data[8], dev->dev_type.data[9], |
| 744 | dev->dev_type.data[10], |
| 745 | dev->dev_type.data[11], |
| 746 | dev->dev_type.data[12], |
| 747 | dev->dev_type.data[13], |
| 748 | dev->dev_type.data[14], |
| 749 | dev->dev_type.data[15]); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 750 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 751 | ret = add_uevent_var(env, "VMBUS_DEVICE_CLASS_GUID={" |
| 752 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 753 | "%02x%02x%02x%02x%02x%02x%02x%02x}", |
K. Y. Srinivasan | 65c2279 | 2011-03-07 13:35:10 -0800 | [diff] [blame] | 754 | dev->dev_type.data[3], |
| 755 | dev->dev_type.data[2], |
| 756 | dev->dev_type.data[1], |
| 757 | dev->dev_type.data[0], |
| 758 | dev->dev_type.data[5], |
| 759 | dev->dev_type.data[4], |
| 760 | dev->dev_type.data[7], |
| 761 | dev->dev_type.data[6], |
| 762 | dev->dev_type.data[8], |
| 763 | dev->dev_type.data[9], |
| 764 | dev->dev_type.data[10], |
| 765 | dev->dev_type.data[11], |
| 766 | dev->dev_type.data[12], |
| 767 | dev->dev_type.data[13], |
| 768 | dev->dev_type.data[14], |
| 769 | dev->dev_type.data[15]); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 770 | |
| 771 | if (ret) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 772 | return ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 773 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 774 | ret = add_uevent_var(env, "VMBUS_DEVICE_DEVICE_GUID={" |
| 775 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-" |
| 776 | "%02x%02x%02x%02x%02x%02x%02x%02x}", |
K. Y. Srinivasan | d588977 | 2011-03-07 13:35:30 -0800 | [diff] [blame] | 777 | dev->dev_instance.data[3], |
| 778 | dev->dev_instance.data[2], |
| 779 | dev->dev_instance.data[1], |
| 780 | dev->dev_instance.data[0], |
| 781 | dev->dev_instance.data[5], |
| 782 | dev->dev_instance.data[4], |
| 783 | dev->dev_instance.data[7], |
| 784 | dev->dev_instance.data[6], |
| 785 | dev->dev_instance.data[8], |
| 786 | dev->dev_instance.data[9], |
| 787 | dev->dev_instance.data[10], |
| 788 | dev->dev_instance.data[11], |
| 789 | dev->dev_instance.data[12], |
| 790 | dev->dev_instance.data[13], |
| 791 | dev->dev_instance.data[14], |
| 792 | dev->dev_instance.data[15]); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 793 | if (ret) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 794 | return ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 795 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 796 | return 0; |
| 797 | } |
| 798 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 799 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 800 | * vmbus_match - Attempt to match the specified device to the specified driver |
| 801 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 802 | static int vmbus_match(struct device *device, struct device_driver *driver) |
| 803 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 804 | int match = 0; |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 805 | struct hv_driver *drv = drv_to_hv_drv(driver); |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 806 | struct hv_device *device_ctx = device_to_hv_device(device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 807 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 808 | /* We found our driver ? */ |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 809 | if (memcmp(&device_ctx->dev_type, &drv->dev_type, |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 810 | sizeof(struct hv_guid)) == 0) { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 811 | |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 812 | device_ctx->drv = drv->priv; |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 813 | DPRINT_INFO(VMBUS_DRV, |
| 814 | "device object (%p) set to driver object (%p)", |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 815 | &device_ctx, |
| 816 | device_ctx->drv); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 817 | |
| 818 | match = 1; |
| 819 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 820 | return match; |
| 821 | } |
| 822 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 823 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 824 | * vmbus_probe_failed_cb - Callback when a driver probe failed in vmbus_probe() |
| 825 | * |
| 826 | * We need a callback because we cannot invoked device_unregister() inside |
| 827 | * vmbus_probe() since vmbus_probe() may be invoked inside device_register() |
| 828 | * i.e. we cannot call device_unregister() inside device_register() |
| 829 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 830 | static void vmbus_probe_failed_cb(struct work_struct *context) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 831 | { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 832 | struct hv_device *device_ctx = (struct hv_device *)context; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 833 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 834 | /* |
| 835 | * Kick off the process of unregistering the device. |
| 836 | * This will call vmbus_remove() and eventually vmbus_device_release() |
| 837 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 838 | device_unregister(&device_ctx->device); |
| 839 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 840 | /* put_device(&device_ctx->device); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 841 | } |
| 842 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 843 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 844 | * vmbus_probe - Add the new vmbus's child device |
| 845 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 846 | static int vmbus_probe(struct device *child_device) |
| 847 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 848 | int ret = 0; |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 849 | struct hv_driver *drv = |
| 850 | drv_to_hv_drv(child_device->driver); |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 851 | struct hv_device *dev = device_to_hv_device(child_device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 852 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 853 | /* 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] | 854 | if (drv->driver.probe) { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 855 | ret = dev->probe_error = |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 856 | drv->driver.probe(child_device); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 857 | if (ret != 0) { |
| 858 | DPRINT_ERR(VMBUS_DRV, "probe() failed for device %s " |
| 859 | "(%p) on driver %s (%d)...", |
| 860 | dev_name(child_device), child_device, |
| 861 | child_device->driver->name, ret); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 862 | |
K. Y. Srinivasan | a3c7fe9 | 2011-03-07 13:34:27 -0800 | [diff] [blame] | 863 | INIT_WORK(&dev->probe_failed_work_item, |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 864 | vmbus_probe_failed_cb); |
K. Y. Srinivasan | a3c7fe9 | 2011-03-07 13:34:27 -0800 | [diff] [blame] | 865 | schedule_work(&dev->probe_failed_work_item); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 866 | } |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 867 | } else { |
| 868 | DPRINT_ERR(VMBUS_DRV, "probe() method not set for driver - %s", |
| 869 | child_device->driver->name); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 870 | ret = -1; |
| 871 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 872 | return ret; |
| 873 | } |
| 874 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 875 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 876 | * vmbus_remove - Remove a vmbus device |
| 877 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 878 | static int vmbus_remove(struct device *child_device) |
| 879 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 880 | int ret; |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 881 | struct hv_driver *drv; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 882 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 883 | /* Special case root bus device */ |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 884 | if (child_device->parent == NULL) { |
| 885 | /* |
| 886 | * No-op since it is statically defined and handle in |
| 887 | * vmbus_bus_exit() |
| 888 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 889 | return 0; |
| 890 | } |
| 891 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 892 | if (child_device->driver) { |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 893 | drv = drv_to_hv_drv(child_device->driver); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 894 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 895 | /* |
| 896 | * Let the specific open-source driver handles the removal if |
| 897 | * it can |
| 898 | */ |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 899 | if (drv->driver.remove) { |
| 900 | ret = drv->driver.remove(child_device); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 901 | } else { |
| 902 | DPRINT_ERR(VMBUS_DRV, |
| 903 | "remove() method not set for driver - %s", |
| 904 | child_device->driver->name); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 905 | ret = -1; |
| 906 | } |
| 907 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 908 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 909 | return 0; |
| 910 | } |
| 911 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 912 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 913 | * vmbus_shutdown - Shutdown a vmbus device |
| 914 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 915 | static void vmbus_shutdown(struct device *child_device) |
| 916 | { |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 917 | struct hv_driver *drv; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 918 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 919 | /* Special case root bus device */ |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 920 | if (child_device->parent == NULL) { |
| 921 | /* |
| 922 | * No-op since it is statically defined and handle in |
| 923 | * vmbus_bus_exit() |
| 924 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 925 | return; |
| 926 | } |
| 927 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 928 | /* The device may not be attached yet */ |
Greg Kroah-Hartman | 83c720e | 2010-07-22 15:14:04 -0700 | [diff] [blame] | 929 | if (!child_device->driver) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 930 | return; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 931 | |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 932 | drv = drv_to_hv_drv(child_device->driver); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 933 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 934 | /* 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] | 935 | if (drv->driver.shutdown) |
| 936 | drv->driver.shutdown(child_device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 937 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 938 | return; |
| 939 | } |
| 940 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 941 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 942 | * vmbus_bus_release - Final callback release of the vmbus root device |
| 943 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 944 | static void vmbus_bus_release(struct device *device) |
| 945 | { |
Greg Kroah-Hartman | 689bf40 | 2009-09-01 20:12:58 -0700 | [diff] [blame] | 946 | /* FIXME */ |
| 947 | /* Empty release functions are a bug, or a major sign |
| 948 | * of a problem design, this MUST BE FIXED! */ |
| 949 | dev_err(device, "%s needs to be fixed!\n", __func__); |
| 950 | WARN_ON(1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 951 | } |
| 952 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 953 | /* |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 954 | * vmbus_device_release - Final callback release of the vmbus child device |
| 955 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 956 | static void vmbus_device_release(struct device *device) |
| 957 | { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 958 | struct hv_device *device_ctx = device_to_hv_device(device); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 959 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 960 | kfree(device_ctx); |
| 961 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 962 | /* !!DO NOT REFERENCE device_ctx anymore at this point!! */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 963 | } |
| 964 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 965 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 966 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 967 | static irqreturn_t vmbus_isr(int irq, void *dev_id) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 968 | { |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 969 | int ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 970 | |
K. Y. Srinivasan | 480ae58 | 2011-03-10 14:06:06 -0800 | [diff] [blame] | 971 | ret = vmbus_on_isr(); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 972 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 973 | /* Schedules a dpc if necessary */ |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 974 | if (ret > 0) { |
| 975 | if (test_bit(0, (unsigned long *)&ret)) |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 976 | tasklet_schedule(&vmbus_drv.msg_dpc); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 977 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 978 | if (test_bit(1, (unsigned long *)&ret)) |
Haiyang Zhang | adf874c | 2011-01-26 12:12:09 -0800 | [diff] [blame] | 979 | tasklet_schedule(&vmbus_drv.event_dpc); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 980 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 981 | return IRQ_HANDLED; |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 982 | } else { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 983 | return IRQ_NONE; |
| 984 | } |
| 985 | } |
| 986 | |
Greg Kroah-Hartman | c22090f | 2010-02-25 16:43:15 -0800 | [diff] [blame] | 987 | static struct dmi_system_id __initdata microsoft_hv_dmi_table[] = { |
| 988 | { |
| 989 | .ident = "Hyper-V", |
| 990 | .matches = { |
| 991 | DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), |
| 992 | DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"), |
| 993 | DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"), |
| 994 | }, |
| 995 | }, |
| 996 | { }, |
| 997 | }; |
| 998 | MODULE_DEVICE_TABLE(dmi, microsoft_hv_dmi_table); |
| 999 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1000 | static int __init vmbus_init(void) |
| 1001 | { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1002 | DPRINT_INFO(VMBUS_DRV, |
| 1003 | "Vmbus initializing.... current log level 0x%x (%x,%x)", |
| 1004 | vmbus_loglevel, HIWORD(vmbus_loglevel), LOWORD(vmbus_loglevel)); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 1005 | /* Todo: it is used for loglevel, to be ported to new kernel. */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1006 | |
Greg Kroah-Hartman | c22090f | 2010-02-25 16:43:15 -0800 | [diff] [blame] | 1007 | if (!dmi_check_system(microsoft_hv_dmi_table)) |
| 1008 | return -ENODEV; |
| 1009 | |
Greg Kroah-Hartman | 6c88455 | 2010-12-02 12:04:00 -0800 | [diff] [blame] | 1010 | return vmbus_bus_init(); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1011 | } |
| 1012 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1013 | static void __exit vmbus_exit(void) |
| 1014 | { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1015 | vmbus_bus_exit(); |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 1016 | /* Todo: it is used for loglevel, to be ported to new kernel. */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1017 | } |
| 1018 | |
Greg Kroah-Hartman | 9a775db | 2010-02-25 16:42:10 -0800 | [diff] [blame] | 1019 | /* |
| 1020 | * We use a PCI table to determine if we should autoload this driver This is |
| 1021 | * needed by distro tools to determine if the hyperv drivers should be |
| 1022 | * installed and/or configured. We don't do anything else with the table, but |
| 1023 | * it needs to be present. |
Greg Kroah-Hartman | 9a775db | 2010-02-25 16:42:10 -0800 | [diff] [blame] | 1024 | */ |
Tobias Klauser | 15f0beb | 2010-05-20 10:39:38 +0200 | [diff] [blame] | 1025 | static const struct pci_device_id microsoft_hv_pci_table[] = { |
Greg Kroah-Hartman | 9a775db | 2010-02-25 16:42:10 -0800 | [diff] [blame] | 1026 | { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */ |
| 1027 | { 0 } |
| 1028 | }; |
| 1029 | MODULE_DEVICE_TABLE(pci, microsoft_hv_pci_table); |
| 1030 | |
Greg Kroah-Hartman | 90c9960 | 2009-09-02 07:11:14 -0700 | [diff] [blame] | 1031 | MODULE_LICENSE("GPL"); |
Hank Janssen | 26c14cc | 2010-02-11 23:02:42 +0000 | [diff] [blame] | 1032 | MODULE_VERSION(HV_DRV_VERSION); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1033 | module_param(vmbus_irq, int, S_IRUGO); |
| 1034 | module_param(vmbus_loglevel, int, S_IRUGO); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1035 | |
| 1036 | module_init(vmbus_init); |
| 1037 | module_exit(vmbus_exit); |