Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) 2009, Microsoft Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
| 16 | * Place - Suite 330, Boston, MA 02111-1307 USA. |
| 17 | * |
| 18 | * Authors: |
| 19 | * Haiyang Zhang <haiyangz@microsoft.com> |
| 20 | * Hank Janssen <hjanssen@microsoft.com> |
| 21 | * |
| 22 | */ |
| 23 | |
Greg Kroah-Hartman | 5654e93 | 2009-07-14 15:08:20 -0700 | [diff] [blame] | 24 | #include <linux/kernel.h> |
Greg Kroah-Hartman | a0086dc | 2009-08-17 17:22:08 -0700 | [diff] [blame] | 25 | #include <linux/mm.h> |
Greg Kroah-Hartman | 4983b39 | 2009-08-19 16:14:47 -0700 | [diff] [blame] | 26 | #include "osd.h" |
Greg Kroah-Hartman | 645954c | 2009-08-28 16:22:59 -0700 | [diff] [blame] | 27 | #include "logging.h" |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 28 | #include "VmbusPrivate.h" |
| 29 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 30 | /* Internal routines */ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 31 | static int VmbusChannelCreateGpadlHeader( |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 32 | void * Kbuffer, /* must be phys and virt contiguous */ |
| 33 | u32 Size, /* page-size multiple */ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 34 | struct vmbus_channel_msginfo **msgInfo, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 35 | u32 *MessageCount |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 36 | ); |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 37 | static void DumpVmbusChannel(struct vmbus_channel *channel); |
| 38 | static void VmbusChannelSetEvent(struct vmbus_channel *channel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 39 | |
| 40 | |
| 41 | #if 0 |
| 42 | static void |
| 43 | DumpMonitorPage( |
Greg Kroah-Hartman | eacb1b4 | 2009-08-20 12:11:26 -0700 | [diff] [blame] | 44 | struct hv_monitor_page *MonitorPage |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 45 | ) |
| 46 | { |
| 47 | int i=0; |
| 48 | int j=0; |
| 49 | |
| 50 | DPRINT_DBG(VMBUS, "monitorPage - %p, trigger state - %d", MonitorPage, MonitorPage->TriggerState); |
| 51 | |
| 52 | for (i=0; i<4; i++) |
| 53 | { |
| 54 | DPRINT_DBG(VMBUS, "trigger group (%d) - %llx", i, MonitorPage->TriggerGroup[i].AsUINT64); |
| 55 | } |
| 56 | |
| 57 | for (i=0; i<4; i++) |
| 58 | { |
| 59 | for (j=0; j<32; j++) |
| 60 | { |
| 61 | DPRINT_DBG(VMBUS, "latency (%d)(%d) - %llx", i, j, MonitorPage->Latency[i][j]); |
| 62 | } |
| 63 | } |
| 64 | for (i=0; i<4; i++) |
| 65 | { |
| 66 | for (j=0; j<32; j++) |
| 67 | { |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 68 | DPRINT_DBG(VMBUS, "param-conn id (%d)(%d) - %d", i, j, MonitorPage->Parameter[i][j].ConnectionId.Asu32); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 69 | DPRINT_DBG(VMBUS, "param-flag (%d)(%d) - %d", i, j, MonitorPage->Parameter[i][j].FlagNumber); |
| 70 | |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | #endif |
| 75 | |
| 76 | /*++ |
| 77 | |
| 78 | Name: |
| 79 | VmbusChannelSetEvent() |
| 80 | |
| 81 | Description: |
| 82 | Trigger an event notification on the specified channel. |
| 83 | |
| 84 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 85 | static void VmbusChannelSetEvent(struct vmbus_channel *Channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 86 | { |
Greg Kroah-Hartman | eacb1b4 | 2009-08-20 12:11:26 -0700 | [diff] [blame] | 87 | struct hv_monitor_page *monitorPage; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 88 | |
| 89 | DPRINT_ENTER(VMBUS); |
| 90 | |
| 91 | if (Channel->OfferMsg.MonitorAllocated) |
| 92 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 93 | /* Each u32 represents 32 channels */ |
Bill Pemberton | 7c369f4 | 2009-07-29 17:00:11 -0400 | [diff] [blame] | 94 | set_bit(Channel->OfferMsg.ChildRelId & 31, |
| 95 | (unsigned long *) gVmbusConnection.SendInterruptPage + |
| 96 | (Channel->OfferMsg.ChildRelId >> 5) ); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 97 | |
Greg Kroah-Hartman | eacb1b4 | 2009-08-20 12:11:26 -0700 | [diff] [blame] | 98 | monitorPage = (struct hv_monitor_page *)gVmbusConnection.MonitorPages; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 99 | monitorPage++; /* Get the child to parent monitor page */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 100 | |
Bill Pemberton | 7c369f4 | 2009-07-29 17:00:11 -0400 | [diff] [blame] | 101 | set_bit(Channel->MonitorBit, |
| 102 | (unsigned long *) &monitorPage->TriggerGroup[Channel->MonitorGroup].Pending); |
| 103 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 104 | } |
| 105 | else |
| 106 | { |
| 107 | VmbusSetEvent(Channel->OfferMsg.ChildRelId); |
| 108 | } |
| 109 | |
| 110 | DPRINT_EXIT(VMBUS); |
| 111 | } |
| 112 | |
| 113 | #if 0 |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 114 | static void VmbusChannelClearEvent(struct vmbus_channel *channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 115 | { |
Greg Kroah-Hartman | eacb1b4 | 2009-08-20 12:11:26 -0700 | [diff] [blame] | 116 | struct hv_monitor_page *monitorPage; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 117 | |
| 118 | DPRINT_ENTER(VMBUS); |
| 119 | |
| 120 | if (Channel->OfferMsg.MonitorAllocated) |
| 121 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 122 | /* Each u32 represents 32 channels */ |
Bill Pemberton | 7c369f4 | 2009-07-29 17:00:11 -0400 | [diff] [blame] | 123 | clear_bit(Channel->OfferMsg.ChildRelId & 31, |
| 124 | (unsigned long *) gVmbusConnection.SendInterruptPage + (Channel->OfferMsg.ChildRelId >> 5)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 125 | |
Greg Kroah-Hartman | eacb1b4 | 2009-08-20 12:11:26 -0700 | [diff] [blame] | 126 | monitorPage = (struct hv_monitor_page *)gVmbusConnection.MonitorPages; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 127 | monitorPage++; /* Get the child to parent monitor page */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 128 | |
Bill Pemberton | 7c369f4 | 2009-07-29 17:00:11 -0400 | [diff] [blame] | 129 | clear_bit(Channel->MonitorBit, |
| 130 | (unsigned long *) &monitorPage->TriggerGroup[Channel->MonitorGroup].Pending); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | DPRINT_EXIT(VMBUS); |
| 134 | } |
| 135 | |
| 136 | #endif |
| 137 | /*++; |
| 138 | |
| 139 | Name: |
| 140 | VmbusChannelGetDebugInfo() |
| 141 | |
| 142 | Description: |
| 143 | Retrieve various channel debug info |
| 144 | |
| 145 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 146 | void VmbusChannelGetDebugInfo(struct vmbus_channel *Channel, |
| 147 | struct vmbus_channel_debug_info *DebugInfo) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 148 | { |
Greg Kroah-Hartman | eacb1b4 | 2009-08-20 12:11:26 -0700 | [diff] [blame] | 149 | struct hv_monitor_page *monitorPage; |
Greg Kroah-Hartman | 5654e93 | 2009-07-14 15:08:20 -0700 | [diff] [blame] | 150 | u8 monitorGroup = (u8)Channel->OfferMsg.MonitorId / 32; |
| 151 | u8 monitorOffset = (u8)Channel->OfferMsg.MonitorId % 32; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 152 | /* u32 monitorBit = 1 << monitorOffset; */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 153 | |
| 154 | DebugInfo->RelId = Channel->OfferMsg.ChildRelId; |
| 155 | DebugInfo->State = Channel->State; |
Greg Kroah-Hartman | caf26a3 | 2009-08-19 16:17:03 -0700 | [diff] [blame] | 156 | memcpy(&DebugInfo->InterfaceType, &Channel->OfferMsg.Offer.InterfaceType, sizeof(struct hv_guid)); |
| 157 | memcpy(&DebugInfo->InterfaceInstance, &Channel->OfferMsg.Offer.InterfaceInstance, sizeof(struct hv_guid)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 158 | |
Greg Kroah-Hartman | eacb1b4 | 2009-08-20 12:11:26 -0700 | [diff] [blame] | 159 | monitorPage = (struct hv_monitor_page *)gVmbusConnection.MonitorPages; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 160 | |
| 161 | DebugInfo->MonitorId = Channel->OfferMsg.MonitorId; |
| 162 | |
| 163 | DebugInfo->ServerMonitorPending = monitorPage->TriggerGroup[monitorGroup].Pending; |
| 164 | DebugInfo->ServerMonitorLatency = monitorPage->Latency[monitorGroup][ monitorOffset]; |
| 165 | DebugInfo->ServerMonitorConnectionId = monitorPage->Parameter[monitorGroup][ monitorOffset].ConnectionId.u.Id; |
| 166 | |
| 167 | monitorPage++; |
| 168 | |
| 169 | DebugInfo->ClientMonitorPending = monitorPage->TriggerGroup[monitorGroup].Pending; |
| 170 | DebugInfo->ClientMonitorLatency = monitorPage->Latency[monitorGroup][ monitorOffset]; |
| 171 | DebugInfo->ClientMonitorConnectionId = monitorPage->Parameter[monitorGroup][ monitorOffset].ConnectionId.u.Id; |
| 172 | |
| 173 | RingBufferGetDebugInfo(&Channel->Inbound, &DebugInfo->Inbound); |
| 174 | RingBufferGetDebugInfo(&Channel->Outbound, &DebugInfo->Outbound); |
| 175 | } |
| 176 | |
| 177 | |
| 178 | /*++; |
| 179 | |
| 180 | Name: |
| 181 | VmbusChannelOpen() |
| 182 | |
| 183 | Description: |
| 184 | Open the specified channel. |
| 185 | |
| 186 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 187 | int VmbusChannelOpen(struct vmbus_channel *NewChannel, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 188 | u32 SendRingBufferSize, |
| 189 | u32 RecvRingBufferSize, |
Greg Kroah-Hartman | 8282c40 | 2009-07-14 15:06:28 -0700 | [diff] [blame] | 190 | void * UserData, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 191 | u32 UserDataLen, |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 192 | PFN_CHANNEL_CALLBACK pfnOnChannelCallback, |
Greg Kroah-Hartman | 8282c40 | 2009-07-14 15:06:28 -0700 | [diff] [blame] | 193 | void * Context |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 194 | ) |
| 195 | { |
| 196 | int ret=0; |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 197 | struct vmbus_channel_open_channel *openMsg; |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 198 | struct vmbus_channel_msginfo *openInfo; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 199 | void *in, *out; |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 200 | unsigned long flags; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 201 | |
| 202 | DPRINT_ENTER(VMBUS); |
| 203 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 204 | /* Aligned to page size */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 205 | ASSERT(!(SendRingBufferSize & (PAGE_SIZE -1))); |
| 206 | ASSERT(!(RecvRingBufferSize & (PAGE_SIZE -1))); |
| 207 | |
| 208 | NewChannel->OnChannelCallback = pfnOnChannelCallback; |
| 209 | NewChannel->ChannelCallbackContext = Context; |
| 210 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 211 | /* Allocate the ring buffer */ |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 212 | out = osd_PageAlloc((SendRingBufferSize + RecvRingBufferSize) >> PAGE_SHIFT); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 213 | /* out = kzalloc(sendRingBufferSize + recvRingBufferSize, GFP_KERNEL); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 214 | ASSERT(out); |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 215 | ASSERT(((unsigned long)out & (PAGE_SIZE-1)) == 0); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 216 | |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 217 | in = (void*)((unsigned long)out + SendRingBufferSize); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 218 | |
| 219 | NewChannel->RingBufferPages = out; |
| 220 | NewChannel->RingBufferPageCount = (SendRingBufferSize + RecvRingBufferSize) >> PAGE_SHIFT; |
| 221 | |
| 222 | RingBufferInit(&NewChannel->Outbound, out, SendRingBufferSize); |
| 223 | |
| 224 | RingBufferInit(&NewChannel->Inbound, in, RecvRingBufferSize); |
| 225 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 226 | /* Establish the gpadl for the ring buffer */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 227 | DPRINT_DBG(VMBUS, "Establishing ring buffer's gpadl for channel %p...", NewChannel); |
| 228 | |
| 229 | NewChannel->RingBufferGpadlHandle = 0; |
| 230 | |
| 231 | ret = VmbusChannelEstablishGpadl(NewChannel, |
| 232 | NewChannel->Outbound.RingBuffer, |
| 233 | SendRingBufferSize + RecvRingBufferSize, |
| 234 | &NewChannel->RingBufferGpadlHandle); |
| 235 | |
| 236 | DPRINT_DBG(VMBUS, "channel %p <relid %d gpadl 0x%x send ring %p size %d recv ring %p size %d, downstreamoffset %d>", |
| 237 | NewChannel, |
| 238 | NewChannel->OfferMsg.ChildRelId, |
| 239 | NewChannel->RingBufferGpadlHandle, |
| 240 | NewChannel->Outbound.RingBuffer, |
| 241 | NewChannel->Outbound.RingSize, |
| 242 | NewChannel->Inbound.RingBuffer, |
| 243 | NewChannel->Inbound.RingSize, |
| 244 | SendRingBufferSize); |
| 245 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 246 | /* Create and init the channel open message */ |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 247 | openInfo = kmalloc(sizeof(*openInfo) + sizeof(struct vmbus_channel_open_channel), GFP_KERNEL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 248 | ASSERT(openInfo != NULL); |
| 249 | |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 250 | openInfo->WaitEvent = osd_WaitEventCreate(); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 251 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 252 | openMsg = (struct vmbus_channel_open_channel *)openInfo->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 253 | openMsg->Header.MessageType = ChannelMessageOpenChannel; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 254 | openMsg->OpenId = NewChannel->OfferMsg.ChildRelId; /* FIXME */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 255 | openMsg->ChildRelId = NewChannel->OfferMsg.ChildRelId; |
| 256 | openMsg->RingBufferGpadlHandle = NewChannel->RingBufferGpadlHandle; |
| 257 | ASSERT(openMsg->RingBufferGpadlHandle); |
| 258 | openMsg->DownstreamRingBufferPageOffset = SendRingBufferSize >> PAGE_SHIFT; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 259 | openMsg->ServerContextAreaGpadlHandle = 0; /* TODO */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 260 | |
| 261 | ASSERT(UserDataLen <= MAX_USER_DEFINED_BYTES); |
| 262 | if (UserDataLen) |
| 263 | { |
| 264 | memcpy(openMsg->UserData, UserData, UserDataLen); |
| 265 | } |
| 266 | |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 267 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 268 | INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList, &openInfo->MsgListEntry); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 269 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 270 | |
| 271 | DPRINT_DBG(VMBUS, "Sending channel open msg..."); |
| 272 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 273 | ret = VmbusPostMessage(openMsg, sizeof(struct vmbus_channel_open_channel)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 274 | if (ret != 0) |
| 275 | { |
| 276 | DPRINT_ERR(VMBUS, "unable to open channel - %d", ret); |
| 277 | goto Cleanup; |
| 278 | } |
| 279 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 280 | /* FIXME: Need to time-out here */ |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 281 | osd_WaitEventWait(openInfo->WaitEvent); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 282 | |
| 283 | if (openInfo->Response.OpenResult.Status == 0) |
| 284 | { |
| 285 | DPRINT_INFO(VMBUS, "channel <%p> open success!!", NewChannel); |
| 286 | } |
| 287 | else |
| 288 | { |
| 289 | DPRINT_INFO(VMBUS, "channel <%p> open failed - %d!!", NewChannel, openInfo->Response.OpenResult.Status); |
| 290 | } |
| 291 | |
| 292 | Cleanup: |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 293 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 294 | REMOVE_ENTRY_LIST(&openInfo->MsgListEntry); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 295 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 296 | |
Bill Pemberton | 420beac | 2009-07-29 17:00:10 -0400 | [diff] [blame] | 297 | kfree(openInfo->WaitEvent); |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 298 | kfree(openInfo); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 299 | |
| 300 | DPRINT_EXIT(VMBUS); |
| 301 | |
| 302 | return 0; |
| 303 | } |
| 304 | |
| 305 | /*++; |
| 306 | |
| 307 | Name: |
| 308 | DumpGpadlBody() |
| 309 | |
| 310 | Description: |
| 311 | Dump the gpadl body message to the console for debugging purposes. |
| 312 | |
| 313 | --*/ |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 314 | static void DumpGpadlBody(struct vmbus_channel_gpadl_body *Gpadl, u32 Len) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 315 | { |
| 316 | int i=0; |
| 317 | int pfnCount=0; |
| 318 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 319 | pfnCount = (Len - sizeof(struct vmbus_channel_gpadl_body))/ sizeof(u64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 320 | DPRINT_DBG(VMBUS, "gpadl body - len %d pfn count %d", Len, pfnCount); |
| 321 | |
| 322 | for (i=0; i< pfnCount; i++) |
| 323 | { |
| 324 | DPRINT_DBG(VMBUS, "gpadl body - %d) pfn %llu", i, Gpadl->Pfn[i]); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | |
| 329 | /*++; |
| 330 | |
| 331 | Name: |
| 332 | DumpGpadlHeader() |
| 333 | |
| 334 | Description: |
| 335 | Dump the gpadl header message to the console for debugging purposes. |
| 336 | |
| 337 | --*/ |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 338 | static void DumpGpadlHeader(struct vmbus_channel_gpadl_header *Gpadl) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 339 | { |
| 340 | int i=0,j=0; |
| 341 | int pageCount=0; |
| 342 | |
| 343 | |
| 344 | DPRINT_DBG(VMBUS, "gpadl header - relid %d, range count %d, range buflen %d", |
| 345 | Gpadl->ChildRelId, |
| 346 | Gpadl->RangeCount, |
| 347 | Gpadl->RangeBufLen); |
| 348 | for (i=0; i< Gpadl->RangeCount; i++) |
| 349 | { |
| 350 | pageCount = Gpadl->Range[i].ByteCount >> PAGE_SHIFT; |
| 351 | pageCount = (pageCount > 26)? 26 : pageCount; |
| 352 | |
| 353 | DPRINT_DBG(VMBUS, "gpadl range %d - len %d offset %d page count %d", |
| 354 | i, Gpadl->Range[i].ByteCount, Gpadl->Range[i].ByteOffset, pageCount); |
| 355 | |
| 356 | for (j=0; j< pageCount; j++) |
| 357 | { |
| 358 | DPRINT_DBG(VMBUS, "%d) pfn %llu", j, Gpadl->Range[i].PfnArray[j]); |
| 359 | } |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | /*++; |
| 364 | |
| 365 | Name: |
| 366 | VmbusChannelCreateGpadlHeader() |
| 367 | |
| 368 | Description: |
| 369 | Creates a gpadl for the specified buffer |
| 370 | |
| 371 | --*/ |
| 372 | static int |
| 373 | VmbusChannelCreateGpadlHeader( |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 374 | void * Kbuffer, /* from kmalloc() */ |
| 375 | u32 Size, /* page-size multiple */ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 376 | struct vmbus_channel_msginfo **MsgInfo, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 377 | u32 *MessageCount) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 378 | { |
| 379 | int i; |
| 380 | int pageCount; |
| 381 | unsigned long long pfn; |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 382 | struct vmbus_channel_gpadl_header *gpaHeader; |
| 383 | struct vmbus_channel_gpadl_body *gpadlBody; |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 384 | struct vmbus_channel_msginfo *msgHeader; |
| 385 | struct vmbus_channel_msginfo *msgBody; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 386 | u32 msgSize; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 387 | |
| 388 | int pfnSum, pfnCount, pfnLeft, pfnCurr, pfnSize; |
| 389 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 390 | /* ASSERT( (kbuffer & (PAGE_SIZE-1)) == 0); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 391 | ASSERT( (Size & (PAGE_SIZE-1)) == 0); |
| 392 | |
| 393 | pageCount = Size >> PAGE_SHIFT; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 394 | pfn = virt_to_phys(Kbuffer) >> PAGE_SHIFT; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 395 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 396 | /* do we need a gpadl body msg */ |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 397 | pfnSize = MAX_SIZE_CHANNEL_MESSAGE - sizeof(struct vmbus_channel_gpadl_header) - sizeof(struct gpa_range); |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 398 | pfnCount = pfnSize / sizeof(u64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 399 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 400 | if (pageCount > pfnCount) /* we need a gpadl body */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 401 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 402 | /* fill in the header */ |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 403 | msgSize = sizeof(struct vmbus_channel_msginfo) + sizeof(struct vmbus_channel_gpadl_header) + sizeof(struct gpa_range) + pfnCount*sizeof(u64); |
Greg Kroah-Hartman | e276a3a | 2009-07-15 12:47:43 -0700 | [diff] [blame] | 404 | msgHeader = kzalloc(msgSize, GFP_KERNEL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 405 | |
| 406 | INITIALIZE_LIST_HEAD(&msgHeader->SubMsgList); |
| 407 | msgHeader->MessageSize=msgSize; |
| 408 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 409 | gpaHeader = (struct vmbus_channel_gpadl_header *)msgHeader->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 410 | gpaHeader->RangeCount = 1; |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 411 | gpaHeader->RangeBufLen = sizeof(struct gpa_range) + pageCount*sizeof(u64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 412 | gpaHeader->Range[0].ByteOffset = 0; |
| 413 | gpaHeader->Range[0].ByteCount = Size; |
| 414 | for (i=0; i<pfnCount; i++) |
| 415 | { |
| 416 | gpaHeader->Range[0].PfnArray[i] = pfn+i; |
| 417 | } |
| 418 | *MsgInfo = msgHeader; |
| 419 | *MessageCount = 1; |
| 420 | |
| 421 | pfnSum = pfnCount; |
| 422 | pfnLeft = pageCount - pfnCount; |
| 423 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 424 | /* how many pfns can we fit */ |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 425 | pfnSize = MAX_SIZE_CHANNEL_MESSAGE - sizeof(struct vmbus_channel_gpadl_body); |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 426 | pfnCount = pfnSize / sizeof(u64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 427 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 428 | /* fill in the body */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 429 | while (pfnLeft) |
| 430 | { |
| 431 | if (pfnLeft > pfnCount) |
| 432 | { |
| 433 | pfnCurr = pfnCount; |
| 434 | } |
| 435 | else |
| 436 | { |
| 437 | pfnCurr = pfnLeft; |
| 438 | } |
| 439 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 440 | msgSize = sizeof(struct vmbus_channel_msginfo) + sizeof(struct vmbus_channel_gpadl_body) + pfnCurr*sizeof(u64); |
Greg Kroah-Hartman | e276a3a | 2009-07-15 12:47:43 -0700 | [diff] [blame] | 441 | msgBody = kzalloc(msgSize, GFP_KERNEL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 442 | ASSERT(msgBody); |
| 443 | msgBody->MessageSize = msgSize; |
| 444 | (*MessageCount)++; |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 445 | gpadlBody = (struct vmbus_channel_gpadl_body *)msgBody->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 446 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 447 | /* FIXME: Gpadl is u32 and we are using a pointer which could be 64-bit */ |
| 448 | /* gpadlBody->Gpadl = kbuffer; */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 449 | for (i=0; i<pfnCurr; i++) |
| 450 | { |
| 451 | gpadlBody->Pfn[i] = pfn + pfnSum + i; |
| 452 | } |
| 453 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 454 | /* add to msg header */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 455 | INSERT_TAIL_LIST(&msgHeader->SubMsgList, &msgBody->MsgListEntry); |
| 456 | pfnSum += pfnCurr; |
| 457 | pfnLeft -= pfnCurr; |
| 458 | } |
| 459 | } |
| 460 | else |
| 461 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 462 | /* everything fits in a header */ |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 463 | msgSize = sizeof(struct vmbus_channel_msginfo) + sizeof(struct vmbus_channel_gpadl_header) + sizeof(struct gpa_range) + pageCount*sizeof(u64); |
Greg Kroah-Hartman | e276a3a | 2009-07-15 12:47:43 -0700 | [diff] [blame] | 464 | msgHeader = kzalloc(msgSize, GFP_KERNEL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 465 | msgHeader->MessageSize=msgSize; |
| 466 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 467 | gpaHeader = (struct vmbus_channel_gpadl_header *)msgHeader->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 468 | gpaHeader->RangeCount = 1; |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 469 | gpaHeader->RangeBufLen = sizeof(struct gpa_range) + pageCount*sizeof(u64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 470 | gpaHeader->Range[0].ByteOffset = 0; |
| 471 | gpaHeader->Range[0].ByteCount = Size; |
| 472 | for (i=0; i<pageCount; i++) |
| 473 | { |
| 474 | gpaHeader->Range[0].PfnArray[i] = pfn+i; |
| 475 | } |
| 476 | |
| 477 | *MsgInfo = msgHeader; |
| 478 | *MessageCount = 1; |
| 479 | } |
| 480 | |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | |
| 485 | /*++; |
| 486 | |
| 487 | Name: |
| 488 | VmbusChannelEstablishGpadl() |
| 489 | |
| 490 | Description: |
| 491 | Estabish a GPADL for the specified buffer |
| 492 | |
| 493 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 494 | int VmbusChannelEstablishGpadl(struct vmbus_channel *Channel, |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 495 | void * Kbuffer, /* from kmalloc() */ |
| 496 | u32 Size, /* page-size multiple */ |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 497 | u32 *GpadlHandle |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 498 | ) |
| 499 | { |
| 500 | int ret=0; |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 501 | struct vmbus_channel_gpadl_header *gpadlMsg; |
| 502 | struct vmbus_channel_gpadl_body *gpadlBody; |
| 503 | /* struct vmbus_channel_gpadl_created *gpadlCreated; */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 504 | |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 505 | struct vmbus_channel_msginfo *msgInfo; |
| 506 | struct vmbus_channel_msginfo *subMsgInfo; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 507 | |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 508 | u32 msgCount; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 509 | LIST_ENTRY* anchor; |
| 510 | LIST_ENTRY* curr; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 511 | u32 nextGpadlHandle; |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 512 | unsigned long flags; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 513 | |
| 514 | DPRINT_ENTER(VMBUS); |
| 515 | |
Bill Pemberton | f488841 | 2009-07-29 17:00:12 -0400 | [diff] [blame] | 516 | nextGpadlHandle = atomic_read(&gVmbusConnection.NextGpadlHandle); |
| 517 | atomic_inc(&gVmbusConnection.NextGpadlHandle); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 518 | |
| 519 | VmbusChannelCreateGpadlHeader(Kbuffer, Size, &msgInfo, &msgCount); |
| 520 | ASSERT(msgInfo != NULL); |
| 521 | ASSERT(msgCount >0); |
| 522 | |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 523 | msgInfo->WaitEvent = osd_WaitEventCreate(); |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 524 | gpadlMsg = (struct vmbus_channel_gpadl_header *)msgInfo->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 525 | gpadlMsg->Header.MessageType = ChannelMessageGpadlHeader; |
| 526 | gpadlMsg->ChildRelId = Channel->OfferMsg.ChildRelId; |
| 527 | gpadlMsg->Gpadl = nextGpadlHandle; |
| 528 | |
| 529 | DumpGpadlHeader(gpadlMsg); |
| 530 | |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 531 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 532 | INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList, &msgInfo->MsgListEntry); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 533 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 534 | |
| 535 | DPRINT_DBG(VMBUS, "buffer %p, size %d msg cnt %d", Kbuffer, Size, msgCount); |
| 536 | |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 537 | DPRINT_DBG(VMBUS, "Sending GPADL Header - len %zd", msgInfo->MessageSize - sizeof(*msgInfo)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 538 | |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 539 | ret = VmbusPostMessage(gpadlMsg, msgInfo->MessageSize - sizeof(*msgInfo)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 540 | if (ret != 0) |
| 541 | { |
| 542 | DPRINT_ERR(VMBUS, "Unable to open channel - %d", ret); |
| 543 | goto Cleanup; |
| 544 | } |
| 545 | |
| 546 | if (msgCount>1) |
| 547 | { |
| 548 | ITERATE_LIST_ENTRIES(anchor, curr, &msgInfo->SubMsgList) |
| 549 | { |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 550 | subMsgInfo = (struct vmbus_channel_msginfo *)curr; |
| 551 | gpadlBody = (struct vmbus_channel_gpadl_body *)subMsgInfo->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 552 | |
| 553 | gpadlBody->Header.MessageType = ChannelMessageGpadlBody; |
| 554 | gpadlBody->Gpadl = nextGpadlHandle; |
| 555 | |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 556 | DPRINT_DBG(VMBUS, "Sending GPADL Body - len %zd", subMsgInfo->MessageSize - sizeof(*subMsgInfo)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 557 | |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 558 | DumpGpadlBody(gpadlBody, subMsgInfo->MessageSize - sizeof(*subMsgInfo)); |
| 559 | ret = VmbusPostMessage(gpadlBody, subMsgInfo->MessageSize - sizeof(*subMsgInfo)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 560 | ASSERT(ret == 0); |
| 561 | } |
| 562 | } |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 563 | osd_WaitEventWait(msgInfo->WaitEvent); |
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 | /* At this point, we received the gpadl created msg */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 566 | DPRINT_DBG(VMBUS, "Received GPADL created (relid %d, status %d handle %x)", |
| 567 | Channel->OfferMsg.ChildRelId, |
| 568 | msgInfo->Response.GpadlCreated.CreationStatus, |
| 569 | gpadlMsg->Gpadl); |
| 570 | |
| 571 | *GpadlHandle = gpadlMsg->Gpadl; |
| 572 | |
| 573 | Cleanup: |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 574 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 575 | REMOVE_ENTRY_LIST(&msgInfo->MsgListEntry); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 576 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 577 | |
Bill Pemberton | 420beac | 2009-07-29 17:00:10 -0400 | [diff] [blame] | 578 | kfree(msgInfo->WaitEvent); |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 579 | kfree(msgInfo); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 580 | |
| 581 | DPRINT_EXIT(VMBUS); |
| 582 | |
| 583 | return ret; |
| 584 | } |
| 585 | |
| 586 | |
| 587 | |
| 588 | /*++; |
| 589 | |
| 590 | Name: |
| 591 | VmbusChannelTeardownGpadl() |
| 592 | |
| 593 | Description: |
| 594 | Teardown the specified GPADL handle |
| 595 | |
| 596 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 597 | int VmbusChannelTeardownGpadl(struct vmbus_channel *Channel, u32 GpadlHandle) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 598 | { |
| 599 | int ret=0; |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 600 | struct vmbus_channel_gpadl_teardown *msg; |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 601 | struct vmbus_channel_msginfo *info; |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 602 | unsigned long flags; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 603 | |
| 604 | DPRINT_ENTER(VMBUS); |
| 605 | |
| 606 | ASSERT(GpadlHandle != 0); |
| 607 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 608 | info = kmalloc(sizeof(*info) + sizeof(struct vmbus_channel_gpadl_teardown), GFP_KERNEL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 609 | ASSERT(info != NULL); |
| 610 | |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 611 | info->WaitEvent = osd_WaitEventCreate(); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 612 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 613 | msg = (struct vmbus_channel_gpadl_teardown *)info->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 614 | |
| 615 | msg->Header.MessageType = ChannelMessageGpadlTeardown; |
| 616 | msg->ChildRelId = Channel->OfferMsg.ChildRelId; |
| 617 | msg->Gpadl = GpadlHandle; |
| 618 | |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 619 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 620 | INSERT_TAIL_LIST(&gVmbusConnection.ChannelMsgList, &info->MsgListEntry); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 621 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 622 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 623 | ret = VmbusPostMessage(msg, sizeof(struct vmbus_channel_gpadl_teardown)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 624 | if (ret != 0) |
| 625 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 626 | /* TODO: */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 627 | } |
| 628 | |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 629 | osd_WaitEventWait(info->WaitEvent); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 630 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 631 | /* Received a torndown response */ |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 632 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 633 | REMOVE_ENTRY_LIST(&info->MsgListEntry); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 634 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 635 | |
Bill Pemberton | 420beac | 2009-07-29 17:00:10 -0400 | [diff] [blame] | 636 | kfree(info->WaitEvent); |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 637 | kfree(info); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 638 | |
| 639 | DPRINT_EXIT(VMBUS); |
| 640 | |
| 641 | return ret; |
| 642 | } |
| 643 | |
| 644 | |
| 645 | /*++ |
| 646 | |
| 647 | Name: |
| 648 | VmbusChannelClose() |
| 649 | |
| 650 | Description: |
| 651 | Close the specified channel |
| 652 | |
| 653 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 654 | void VmbusChannelClose(struct vmbus_channel *Channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 655 | { |
| 656 | int ret=0; |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 657 | struct vmbus_channel_close_channel *msg; |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 658 | struct vmbus_channel_msginfo *info; |
Greg Kroah-Hartman | 0f5e44c | 2009-07-15 14:57:16 -0700 | [diff] [blame] | 659 | unsigned long flags; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 660 | |
| 661 | DPRINT_ENTER(VMBUS); |
| 662 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 663 | /* Stop callback and cancel the timer asap */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 664 | Channel->OnChannelCallback = NULL; |
Greg Kroah-Hartman | c8a429a | 2009-07-29 15:40:57 -0700 | [diff] [blame] | 665 | del_timer(&Channel->poll_timer); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 666 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 667 | /* Send a closing message */ |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 668 | info = kmalloc(sizeof(*info) + sizeof(struct vmbus_channel_close_channel), GFP_KERNEL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 669 | ASSERT(info != NULL); |
| 670 | |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 671 | /* info->waitEvent = osd_WaitEventCreate(); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 672 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 673 | msg = (struct vmbus_channel_close_channel *)info->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 674 | msg->Header.MessageType = ChannelMessageCloseChannel; |
| 675 | msg->ChildRelId = Channel->OfferMsg.ChildRelId; |
| 676 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 677 | ret = VmbusPostMessage(msg, sizeof(struct vmbus_channel_close_channel)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 678 | if (ret != 0) |
| 679 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 680 | /* TODO: */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 681 | } |
| 682 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 683 | /* Tear down the gpadl for the channel's ring buffer */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 684 | if (Channel->RingBufferGpadlHandle) |
| 685 | { |
| 686 | VmbusChannelTeardownGpadl(Channel, Channel->RingBufferGpadlHandle); |
| 687 | } |
| 688 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 689 | /* TODO: Send a msg to release the childRelId */ |
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 | /* Cleanup the ring buffers for this channel */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 692 | RingBufferCleanup(&Channel->Outbound); |
| 693 | RingBufferCleanup(&Channel->Inbound); |
| 694 | |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 695 | osd_PageFree(Channel->RingBufferPages, Channel->RingBufferPageCount); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 696 | |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 697 | kfree(info); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 698 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 699 | |
| 700 | /* |
| 701 | * If we are closing the channel during an error path in |
| 702 | * opening the channel, don't free the channel since the |
| 703 | * caller will free the channel |
| 704 | */ |
| 705 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 706 | if (Channel->State == CHANNEL_OPEN_STATE) |
| 707 | { |
Greg Kroah-Hartman | 0f5e44c | 2009-07-15 14:57:16 -0700 | [diff] [blame] | 708 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 709 | REMOVE_ENTRY_LIST(&Channel->ListEntry); |
Greg Kroah-Hartman | 0f5e44c | 2009-07-15 14:57:16 -0700 | [diff] [blame] | 710 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 711 | |
| 712 | FreeVmbusChannel(Channel); |
| 713 | } |
| 714 | |
| 715 | DPRINT_EXIT(VMBUS); |
| 716 | } |
| 717 | |
| 718 | |
| 719 | /*++ |
| 720 | |
| 721 | Name: |
| 722 | VmbusChannelSendPacket() |
| 723 | |
| 724 | Description: |
| 725 | Send the specified buffer on the given channel |
| 726 | |
| 727 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 728 | int VmbusChannelSendPacket(struct vmbus_channel *Channel, |
Greg Kroah-Hartman | 8282c40 | 2009-07-14 15:06:28 -0700 | [diff] [blame] | 729 | const void * Buffer, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 730 | u32 BufferLen, |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 731 | u64 RequestId, |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 732 | enum vmbus_packet_type Type, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 733 | u32 Flags |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 734 | ) |
| 735 | { |
| 736 | int ret=0; |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 737 | struct vmpacket_descriptor desc; |
| 738 | u32 packetLen = sizeof(struct vmpacket_descriptor) + BufferLen; |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 739 | u32 packetLenAligned = ALIGN_UP(packetLen, sizeof(u64)); |
Nicolas Palix | b219b3f | 2009-07-30 17:37:23 +0200 | [diff] [blame] | 740 | struct scatterlist bufferList[3]; |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 741 | u64 alignedData=0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 742 | |
| 743 | DPRINT_ENTER(VMBUS); |
| 744 | DPRINT_DBG(VMBUS, "channel %p buffer %p len %d", Channel, Buffer, BufferLen); |
| 745 | |
| 746 | DumpVmbusChannel(Channel); |
| 747 | |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 748 | ASSERT((packetLenAligned - packetLen) < sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 749 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 750 | /* Setup the descriptor */ |
| 751 | desc.Type = Type; /* VmbusPacketTypeDataInBand; */ |
| 752 | desc.Flags = Flags; /* VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; */ |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 753 | desc.DataOffset8 = sizeof(struct vmpacket_descriptor) >> 3; /* in 8-bytes granularity */ |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 754 | desc.Length8 = (u16)(packetLenAligned >> 3); |
| 755 | desc.TransactionId = RequestId; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 756 | |
Nicolas Palix | b219b3f | 2009-07-30 17:37:23 +0200 | [diff] [blame] | 757 | sg_init_table(bufferList,3); |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 758 | sg_set_buf(&bufferList[0], &desc, sizeof(struct vmpacket_descriptor)); |
Nicolas Palix | b219b3f | 2009-07-30 17:37:23 +0200 | [diff] [blame] | 759 | sg_set_buf(&bufferList[1], Buffer, BufferLen); |
| 760 | sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 761 | |
| 762 | ret = RingBufferWrite( |
| 763 | &Channel->Outbound, |
| 764 | bufferList, |
| 765 | 3); |
| 766 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 767 | /* TODO: We should determine if this is optional */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 768 | if (ret == 0 && !GetRingBufferInterruptMask(&Channel->Outbound)) |
| 769 | { |
| 770 | VmbusChannelSetEvent(Channel); |
| 771 | } |
| 772 | |
| 773 | DPRINT_EXIT(VMBUS); |
| 774 | |
| 775 | return ret; |
| 776 | } |
| 777 | |
| 778 | |
| 779 | /*++ |
| 780 | |
| 781 | Name: |
| 782 | VmbusChannelSendPacketPageBuffer() |
| 783 | |
| 784 | Description: |
| 785 | Send a range of single-page buffer packets using a GPADL Direct packet type. |
| 786 | |
| 787 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 788 | int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *Channel, |
Greg Kroah-Hartman | ee3d7dd | 2009-08-20 12:17:36 -0700 | [diff] [blame] | 789 | struct hv_page_buffer PageBuffers[], |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 790 | u32 PageCount, |
Greg Kroah-Hartman | 8282c40 | 2009-07-14 15:06:28 -0700 | [diff] [blame] | 791 | void * Buffer, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 792 | u32 BufferLen, |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 793 | u64 RequestId |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 794 | ) |
| 795 | { |
| 796 | int ret=0; |
| 797 | int i=0; |
Bill Pemberton | 0cf4fa8 | 2009-07-27 16:47:39 -0400 | [diff] [blame] | 798 | struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER desc; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 799 | u32 descSize; |
| 800 | u32 packetLen; |
| 801 | u32 packetLenAligned; |
Nicolas Palix | b219b3f | 2009-07-30 17:37:23 +0200 | [diff] [blame] | 802 | struct scatterlist bufferList[3]; |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 803 | u64 alignedData=0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 804 | |
| 805 | DPRINT_ENTER(VMBUS); |
| 806 | |
| 807 | ASSERT(PageCount <= MAX_PAGE_BUFFER_COUNT); |
| 808 | |
| 809 | DumpVmbusChannel(Channel); |
| 810 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 811 | /* Adjust the size down since VMBUS_CHANNEL_PACKET_PAGE_BUFFER is the largest size we support */ |
Greg Kroah-Hartman | ee3d7dd | 2009-08-20 12:17:36 -0700 | [diff] [blame] | 812 | descSize = sizeof(struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER) - ((MAX_PAGE_BUFFER_COUNT - PageCount)*sizeof(struct hv_page_buffer)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 813 | packetLen = descSize + BufferLen; |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 814 | packetLenAligned = ALIGN_UP(packetLen, sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 815 | |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 816 | ASSERT((packetLenAligned - packetLen) < sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 817 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 818 | /* Setup the descriptor */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 819 | desc.Type = VmbusPacketTypeDataUsingGpaDirect; |
| 820 | desc.Flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 821 | desc.DataOffset8 = descSize >> 3; /* in 8-bytes grandularity */ |
| 822 | desc.Length8 = (u16)(packetLenAligned >> 3); |
| 823 | desc.TransactionId = RequestId; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 824 | desc.RangeCount = PageCount; |
| 825 | |
| 826 | for (i=0; i<PageCount; i++) |
| 827 | { |
| 828 | desc.Range[i].Length = PageBuffers[i].Length; |
| 829 | desc.Range[i].Offset = PageBuffers[i].Offset; |
| 830 | desc.Range[i].Pfn = PageBuffers[i].Pfn; |
| 831 | } |
| 832 | |
Nicolas Palix | b219b3f | 2009-07-30 17:37:23 +0200 | [diff] [blame] | 833 | sg_init_table(bufferList,3); |
| 834 | sg_set_buf(&bufferList[0], &desc, descSize); |
| 835 | sg_set_buf(&bufferList[1], Buffer, BufferLen); |
| 836 | sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 837 | |
| 838 | ret = RingBufferWrite( |
| 839 | &Channel->Outbound, |
| 840 | bufferList, |
| 841 | 3); |
| 842 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 843 | /* TODO: We should determine if this is optional */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 844 | if (ret == 0 && !GetRingBufferInterruptMask(&Channel->Outbound)) |
| 845 | { |
| 846 | VmbusChannelSetEvent(Channel); |
| 847 | } |
| 848 | |
| 849 | DPRINT_EXIT(VMBUS); |
| 850 | |
| 851 | return ret; |
| 852 | } |
| 853 | |
| 854 | |
| 855 | |
| 856 | /*++ |
| 857 | |
| 858 | Name: |
| 859 | VmbusChannelSendPacketMultiPageBuffer() |
| 860 | |
| 861 | Description: |
| 862 | Send a multi-page buffer packet using a GPADL Direct packet type. |
| 863 | |
| 864 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 865 | int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *Channel, |
Greg Kroah-Hartman | ee3d7dd | 2009-08-20 12:17:36 -0700 | [diff] [blame] | 866 | struct hv_multipage_buffer *MultiPageBuffer, |
Greg Kroah-Hartman | 8282c40 | 2009-07-14 15:06:28 -0700 | [diff] [blame] | 867 | void * Buffer, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 868 | u32 BufferLen, |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 869 | u64 RequestId |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 870 | ) |
| 871 | { |
| 872 | int ret=0; |
Bill Pemberton | 3fcc523 | 2009-07-27 16:47:40 -0400 | [diff] [blame] | 873 | struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER desc; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 874 | u32 descSize; |
| 875 | u32 packetLen; |
| 876 | u32 packetLenAligned; |
Nicolas Palix | b219b3f | 2009-07-30 17:37:23 +0200 | [diff] [blame] | 877 | struct scatterlist bufferList[3]; |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 878 | u64 alignedData=0; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 879 | u32 PfnCount = NUM_PAGES_SPANNED(MultiPageBuffer->Offset, MultiPageBuffer->Length); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 880 | |
| 881 | DPRINT_ENTER(VMBUS); |
| 882 | |
| 883 | DumpVmbusChannel(Channel); |
| 884 | |
| 885 | DPRINT_DBG(VMBUS, "data buffer - offset %u len %u pfn count %u", MultiPageBuffer->Offset, MultiPageBuffer->Length, PfnCount); |
| 886 | |
| 887 | ASSERT(PfnCount > 0); |
| 888 | ASSERT(PfnCount <= MAX_MULTIPAGE_BUFFER_COUNT); |
| 889 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 890 | /* Adjust the size down since VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER is the largest size we support */ |
Bill Pemberton | 3fcc523 | 2009-07-27 16:47:40 -0400 | [diff] [blame] | 891 | descSize = sizeof(struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER) - ((MAX_MULTIPAGE_BUFFER_COUNT - PfnCount)*sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 892 | packetLen = descSize + BufferLen; |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 893 | packetLenAligned = ALIGN_UP(packetLen, sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 894 | |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 895 | ASSERT((packetLenAligned - packetLen) < sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 896 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 897 | /* Setup the descriptor */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 898 | desc.Type = VmbusPacketTypeDataUsingGpaDirect; |
| 899 | desc.Flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 900 | desc.DataOffset8 = descSize >> 3; /* in 8-bytes grandularity */ |
| 901 | desc.Length8 = (u16)(packetLenAligned >> 3); |
| 902 | desc.TransactionId = RequestId; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 903 | desc.RangeCount = 1; |
| 904 | |
| 905 | desc.Range.Length = MultiPageBuffer->Length; |
| 906 | desc.Range.Offset = MultiPageBuffer->Offset; |
| 907 | |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 908 | memcpy(desc.Range.PfnArray, MultiPageBuffer->PfnArray, PfnCount*sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 909 | |
Nicolas Palix | b219b3f | 2009-07-30 17:37:23 +0200 | [diff] [blame] | 910 | sg_init_table(bufferList,3); |
| 911 | sg_set_buf(&bufferList[0], &desc, descSize); |
| 912 | sg_set_buf(&bufferList[1], Buffer, BufferLen); |
| 913 | sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 914 | |
| 915 | ret = RingBufferWrite( |
| 916 | &Channel->Outbound, |
| 917 | bufferList, |
| 918 | 3); |
| 919 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 920 | /* TODO: We should determine if this is optional */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 921 | if (ret == 0 && !GetRingBufferInterruptMask(&Channel->Outbound)) |
| 922 | { |
| 923 | VmbusChannelSetEvent(Channel); |
| 924 | } |
| 925 | |
| 926 | DPRINT_EXIT(VMBUS); |
| 927 | |
| 928 | return ret; |
| 929 | } |
| 930 | |
| 931 | |
| 932 | /*++ |
| 933 | |
| 934 | Name: |
| 935 | VmbusChannelRecvPacket() |
| 936 | |
| 937 | Description: |
| 938 | Retrieve the user packet on the specified channel |
| 939 | |
| 940 | --*/ |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 941 | /* TODO: Do we ever receive a gpa direct packet other than the ones we send ? */ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 942 | int VmbusChannelRecvPacket(struct vmbus_channel *Channel, |
Greg Kroah-Hartman | 46a0525 | 2009-08-17 17:21:31 -0700 | [diff] [blame] | 943 | void *Buffer, |
| 944 | u32 BufferLen, |
| 945 | u32 *BufferActualLen, |
| 946 | u64 *RequestId) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 947 | { |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 948 | struct vmpacket_descriptor desc; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 949 | u32 packetLen; |
| 950 | u32 userLen; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 951 | int ret; |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 952 | unsigned long flags; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 953 | |
| 954 | DPRINT_ENTER(VMBUS); |
| 955 | |
| 956 | *BufferActualLen = 0; |
| 957 | *RequestId = 0; |
| 958 | |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 959 | spin_lock_irqsave(&Channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 960 | |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 961 | ret = RingBufferPeek(&Channel->Inbound, &desc, sizeof(struct vmpacket_descriptor)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 962 | if (ret != 0) |
| 963 | { |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 964 | spin_unlock_irqrestore(&Channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 965 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 966 | /* DPRINT_DBG(VMBUS, "nothing to read!!"); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 967 | DPRINT_EXIT(VMBUS); |
| 968 | return 0; |
| 969 | } |
| 970 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 971 | /* VmbusChannelClearEvent(Channel); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 972 | |
| 973 | packetLen = desc.Length8 << 3; |
| 974 | userLen = packetLen - (desc.DataOffset8 << 3); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 975 | /* ASSERT(userLen > 0); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 976 | |
| 977 | DPRINT_DBG(VMBUS, "packet received on channel %p relid %d <type %d flag %d tid %llx pktlen %d datalen %d> ", |
| 978 | Channel, |
| 979 | Channel->OfferMsg.ChildRelId, |
| 980 | desc.Type, |
| 981 | desc.Flags, |
| 982 | desc.TransactionId, packetLen, userLen); |
| 983 | |
| 984 | *BufferActualLen = userLen; |
| 985 | |
| 986 | if (userLen > BufferLen) |
| 987 | { |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 988 | spin_unlock_irqrestore(&Channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 989 | |
| 990 | DPRINT_ERR(VMBUS, "buffer too small - got %d needs %d", BufferLen, userLen); |
| 991 | DPRINT_EXIT(VMBUS); |
| 992 | |
| 993 | return -1; |
| 994 | } |
| 995 | |
| 996 | *RequestId = desc.TransactionId; |
| 997 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 998 | /* Copy over the packet to the user buffer */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 999 | ret = RingBufferRead(&Channel->Inbound, Buffer, userLen, (desc.DataOffset8 << 3)); |
| 1000 | |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 1001 | spin_unlock_irqrestore(&Channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1002 | |
| 1003 | DPRINT_EXIT(VMBUS); |
| 1004 | |
| 1005 | return 0; |
| 1006 | } |
| 1007 | |
| 1008 | /*++ |
| 1009 | |
| 1010 | Name: |
| 1011 | VmbusChannelRecvPacketRaw() |
| 1012 | |
| 1013 | Description: |
| 1014 | Retrieve the raw packet on the specified channel |
| 1015 | |
| 1016 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 1017 | int VmbusChannelRecvPacketRaw(struct vmbus_channel *Channel, |
Greg Kroah-Hartman | 8282c40 | 2009-07-14 15:06:28 -0700 | [diff] [blame] | 1018 | void * Buffer, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 1019 | u32 BufferLen, |
| 1020 | u32* BufferActualLen, |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 1021 | u64* RequestId |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1022 | ) |
| 1023 | { |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 1024 | struct vmpacket_descriptor desc; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 1025 | u32 packetLen; |
| 1026 | u32 userLen; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1027 | int ret; |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 1028 | unsigned long flags; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1029 | |
| 1030 | DPRINT_ENTER(VMBUS); |
| 1031 | |
| 1032 | *BufferActualLen = 0; |
| 1033 | *RequestId = 0; |
| 1034 | |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 1035 | spin_lock_irqsave(&Channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1036 | |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 1037 | ret = RingBufferPeek(&Channel->Inbound, &desc, sizeof(struct vmpacket_descriptor)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1038 | if (ret != 0) |
| 1039 | { |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 1040 | spin_unlock_irqrestore(&Channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1041 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 1042 | /* DPRINT_DBG(VMBUS, "nothing to read!!"); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1043 | DPRINT_EXIT(VMBUS); |
| 1044 | return 0; |
| 1045 | } |
| 1046 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 1047 | /* VmbusChannelClearEvent(Channel); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1048 | |
| 1049 | packetLen = desc.Length8 << 3; |
| 1050 | userLen = packetLen - (desc.DataOffset8 << 3); |
| 1051 | |
| 1052 | DPRINT_DBG(VMBUS, "packet received on channel %p relid %d <type %d flag %d tid %llx pktlen %d datalen %d> ", |
| 1053 | Channel, |
| 1054 | Channel->OfferMsg.ChildRelId, |
| 1055 | desc.Type, |
| 1056 | desc.Flags, |
| 1057 | desc.TransactionId, packetLen, userLen); |
| 1058 | |
| 1059 | *BufferActualLen = packetLen; |
| 1060 | |
| 1061 | if (packetLen > BufferLen) |
| 1062 | { |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 1063 | spin_unlock_irqrestore(&Channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1064 | |
| 1065 | DPRINT_ERR(VMBUS, "buffer too small - needed %d bytes but got space for only %d bytes", packetLen, BufferLen); |
| 1066 | DPRINT_EXIT(VMBUS); |
| 1067 | return -2; |
| 1068 | } |
| 1069 | |
| 1070 | *RequestId = desc.TransactionId; |
| 1071 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 1072 | /* Copy over the entire packet to the user buffer */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1073 | ret = RingBufferRead(&Channel->Inbound, Buffer, packetLen, 0); |
| 1074 | |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 1075 | spin_unlock_irqrestore(&Channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1076 | |
| 1077 | DPRINT_EXIT(VMBUS); |
| 1078 | |
| 1079 | return 0; |
| 1080 | } |
| 1081 | |
| 1082 | |
| 1083 | /*++ |
| 1084 | |
| 1085 | Name: |
| 1086 | VmbusChannelOnChannelEvent() |
| 1087 | |
| 1088 | Description: |
| 1089 | Channel event callback |
| 1090 | |
| 1091 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 1092 | void VmbusChannelOnChannelEvent(struct vmbus_channel *Channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1093 | { |
| 1094 | DumpVmbusChannel(Channel); |
| 1095 | ASSERT(Channel->OnChannelCallback); |
| 1096 | #ifdef ENABLE_POLLING |
Greg Kroah-Hartman | c8a429a | 2009-07-29 15:40:57 -0700 | [diff] [blame] | 1097 | del_timer(&Channel->poll_timer); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1098 | Channel->OnChannelCallback(Channel->ChannelCallbackContext); |
Greg Kroah-Hartman | c8a429a | 2009-07-29 15:40:57 -0700 | [diff] [blame] | 1099 | channel->poll_timer.expires(jiffies + usecs_to_jiffies(100); |
| 1100 | add_timer(&channel->poll_timer); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1101 | #else |
| 1102 | Channel->OnChannelCallback(Channel->ChannelCallbackContext); |
| 1103 | #endif |
| 1104 | } |
| 1105 | |
| 1106 | /*++ |
| 1107 | |
| 1108 | Name: |
| 1109 | VmbusChannelOnTimer() |
| 1110 | |
| 1111 | Description: |
| 1112 | Timer event callback |
| 1113 | |
| 1114 | --*/ |
Greg Kroah-Hartman | 46a0525 | 2009-08-17 17:21:31 -0700 | [diff] [blame] | 1115 | void VmbusChannelOnTimer(unsigned long data) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1116 | { |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 1117 | struct vmbus_channel *channel = (struct vmbus_channel *)data; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1118 | |
| 1119 | if (channel->OnChannelCallback) |
| 1120 | { |
| 1121 | channel->OnChannelCallback(channel->ChannelCallbackContext); |
| 1122 | #ifdef ENABLE_POLLING |
Greg Kroah-Hartman | c8a429a | 2009-07-29 15:40:57 -0700 | [diff] [blame] | 1123 | channel->poll_timer.expires(jiffies + usecs_to_jiffies(100); |
| 1124 | add_timer(&channel->poll_timer); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1125 | #endif |
| 1126 | } |
| 1127 | } |
| 1128 | |
| 1129 | |
| 1130 | /*++ |
| 1131 | |
| 1132 | Name: |
| 1133 | DumpVmbusChannel() |
| 1134 | |
| 1135 | Description: |
| 1136 | Dump vmbus channel info to the console |
| 1137 | |
| 1138 | --*/ |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 1139 | static void DumpVmbusChannel(struct vmbus_channel *Channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1140 | { |
| 1141 | DPRINT_DBG(VMBUS, "Channel (%d)", Channel->OfferMsg.ChildRelId); |
| 1142 | DumpRingInfo(&Channel->Outbound, "Outbound "); |
| 1143 | DumpRingInfo(&Channel->Inbound, "Inbound "); |
| 1144 | } |
| 1145 | |
| 1146 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 1147 | /* eof */ |