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 | */ |
Greg Kroah-Hartman | 5654e93 | 2009-07-14 15:08:20 -0700 | [diff] [blame] | 21 | #include <linux/kernel.h> |
Greg Kroah-Hartman | a0086dc | 2009-08-17 17:22:08 -0700 | [diff] [blame] | 22 | #include <linux/mm.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 23 | #include <linux/slab.h> |
Hank Janssen | c88c4e4 | 2010-05-04 15:55:05 -0700 | [diff] [blame] | 24 | #include <linux/module.h> |
Greg Kroah-Hartman | 4983b39 | 2009-08-19 16:14:47 -0700 | [diff] [blame] | 25 | #include "osd.h" |
Greg Kroah-Hartman | 645954c | 2009-08-28 16:22:59 -0700 | [diff] [blame] | 26 | #include "logging.h" |
Greg Kroah-Hartman | 72daf32 | 2010-05-05 22:45:25 -0700 | [diff] [blame] | 27 | #include "vmbus_private.h" |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 28 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 29 | /* Internal routines */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 30 | static int create_gpadl_header( |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 31 | void *kbuffer, /* must be phys and virt contiguous */ |
| 32 | u32 size, /* page-size multiple */ |
| 33 | struct vmbus_channel_msginfo **msginfo, |
| 34 | u32 *messagecount); |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 35 | static void dump_vmbus_channel(struct vmbus_channel *channel); |
| 36 | static void vmbus_setevent(struct vmbus_channel *channel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 37 | |
| 38 | |
| 39 | #if 0 |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 40 | static void DumpMonitorPage(struct hv_monitor_page *MonitorPage) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 41 | { |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 42 | int i = 0; |
| 43 | int j = 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 44 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 45 | DPRINT_DBG(VMBUS, "monitorPage - %p, trigger state - %d", |
| 46 | MonitorPage, MonitorPage->TriggerState); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 47 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 48 | for (i = 0; i < 4; i++) |
| 49 | DPRINT_DBG(VMBUS, "trigger group (%d) - %llx", i, |
| 50 | MonitorPage->TriggerGroup[i].AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 51 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 52 | for (i = 0; i < 4; i++) { |
| 53 | for (j = 0; j < 32; j++) { |
| 54 | DPRINT_DBG(VMBUS, "latency (%d)(%d) - %llx", i, j, |
| 55 | MonitorPage->Latency[i][j]); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 56 | } |
| 57 | } |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 58 | for (i = 0; i < 4; i++) { |
| 59 | for (j = 0; j < 32; j++) { |
| 60 | DPRINT_DBG(VMBUS, "param-conn id (%d)(%d) - %d", i, j, |
| 61 | MonitorPage->Parameter[i][j].ConnectionId.Asu32); |
| 62 | DPRINT_DBG(VMBUS, "param-flag (%d)(%d) - %d", i, j, |
| 63 | MonitorPage->Parameter[i][j].FlagNumber); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 64 | } |
| 65 | } |
| 66 | } |
| 67 | #endif |
| 68 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 69 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 70 | * vmbus_setevent- Trigger an event notification on the specified |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 71 | * channel. |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 72 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 73 | static void vmbus_setevent(struct vmbus_channel *channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 74 | { |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 75 | struct hv_monitor_page *monitorpage; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 76 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 77 | if (channel->OfferMsg.MonitorAllocated) { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 78 | /* Each u32 represents 32 channels */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 79 | set_bit(channel->OfferMsg.ChildRelId & 31, |
Bill Pemberton | 7c369f4 | 2009-07-29 17:00:11 -0400 | [diff] [blame] | 80 | (unsigned long *) gVmbusConnection.SendInterruptPage + |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 81 | (channel->OfferMsg.ChildRelId >> 5)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 82 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 83 | monitorpage = gVmbusConnection.MonitorPages; |
| 84 | monitorpage++; /* Get the child to parent monitor page */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 85 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 86 | set_bit(channel->MonitorBit, |
| 87 | (unsigned long *)&monitorpage->TriggerGroup |
| 88 | [channel->MonitorGroup].Pending); |
Bill Pemberton | 7c369f4 | 2009-07-29 17:00:11 -0400 | [diff] [blame] | 89 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 90 | } else { |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 91 | VmbusSetEvent(channel->OfferMsg.ChildRelId); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 92 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | #if 0 |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 96 | static void VmbusChannelClearEvent(struct vmbus_channel *channel) |
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 | struct hv_monitor_page *monitorPage; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 99 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 100 | if (Channel->OfferMsg.MonitorAllocated) { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 101 | /* Each u32 represents 32 channels */ |
Bill Pemberton | 7c369f4 | 2009-07-29 17:00:11 -0400 | [diff] [blame] | 102 | clear_bit(Channel->OfferMsg.ChildRelId & 31, |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 103 | (unsigned long *)gVmbusConnection.SendInterruptPage + |
| 104 | (Channel->OfferMsg.ChildRelId >> 5)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 105 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 106 | monitorPage = |
| 107 | (struct hv_monitor_page *)gVmbusConnection.MonitorPages; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 108 | monitorPage++; /* Get the child to parent monitor page */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 109 | |
Bill Pemberton | 7c369f4 | 2009-07-29 17:00:11 -0400 | [diff] [blame] | 110 | clear_bit(Channel->MonitorBit, |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 111 | (unsigned long *)&monitorPage->TriggerGroup |
| 112 | [Channel->MonitorGroup].Pending); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 113 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | #endif |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 117 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 118 | * vmbus_get_debug_info -Retrieve various channel debug info |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 119 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 120 | void vmbus_get_debug_info(struct vmbus_channel *channel, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 121 | struct vmbus_channel_debug_info *debuginfo) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 122 | { |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 123 | struct hv_monitor_page *monitorpage; |
| 124 | u8 monitor_group = (u8)channel->OfferMsg.MonitorId / 32; |
| 125 | u8 monitor_offset = (u8)channel->OfferMsg.MonitorId % 32; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 126 | /* u32 monitorBit = 1 << monitorOffset; */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 127 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 128 | debuginfo->RelId = channel->OfferMsg.ChildRelId; |
| 129 | debuginfo->State = channel->State; |
| 130 | memcpy(&debuginfo->InterfaceType, |
| 131 | &channel->OfferMsg.Offer.InterfaceType, sizeof(struct hv_guid)); |
| 132 | memcpy(&debuginfo->InterfaceInstance, |
| 133 | &channel->OfferMsg.Offer.InterfaceInstance, |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 134 | sizeof(struct hv_guid)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 135 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 136 | monitorpage = (struct hv_monitor_page *)gVmbusConnection.MonitorPages; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 137 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 138 | debuginfo->MonitorId = channel->OfferMsg.MonitorId; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 139 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 140 | debuginfo->ServerMonitorPending = |
| 141 | monitorpage->TriggerGroup[monitor_group].Pending; |
| 142 | debuginfo->ServerMonitorLatency = |
| 143 | monitorpage->Latency[monitor_group][monitor_offset]; |
| 144 | debuginfo->ServerMonitorConnectionId = |
| 145 | monitorpage->Parameter[monitor_group] |
| 146 | [monitor_offset].ConnectionId.u.Id; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 147 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 148 | monitorpage++; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 149 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 150 | debuginfo->ClientMonitorPending = |
| 151 | monitorpage->TriggerGroup[monitor_group].Pending; |
| 152 | debuginfo->ClientMonitorLatency = |
| 153 | monitorpage->Latency[monitor_group][monitor_offset]; |
| 154 | debuginfo->ClientMonitorConnectionId = |
| 155 | monitorpage->Parameter[monitor_group] |
| 156 | [monitor_offset].ConnectionId.u.Id; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 157 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 158 | RingBufferGetDebugInfo(&channel->Inbound, &debuginfo->Inbound); |
| 159 | RingBufferGetDebugInfo(&channel->Outbound, &debuginfo->Outbound); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 160 | } |
| 161 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 162 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 163 | * vmbus_open - Open the specified channel. |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 164 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 165 | int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 166 | u32 recv_ringbuffer_size, void *userdata, u32 userdatalen, |
| 167 | void (*onchannelcallback)(void *context), void *context) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 168 | { |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 169 | struct vmbus_channel_open_channel *openMsg; |
Bill Pemberton | b94ef34 | 2010-05-05 15:27:37 -0400 | [diff] [blame] | 170 | struct vmbus_channel_msginfo *openInfo = NULL; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 171 | void *in, *out; |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 172 | unsigned long flags; |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 173 | int ret, err = 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 174 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 175 | /* Aligned to page size */ |
Bill Pemberton | 0ace247 | 2010-05-05 15:27:40 -0400 | [diff] [blame] | 176 | /* ASSERT(!(SendRingBufferSize & (PAGE_SIZE - 1))); */ |
| 177 | /* ASSERT(!(RecvRingBufferSize & (PAGE_SIZE - 1))); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 178 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 179 | newchannel->OnChannelCallback = onchannelcallback; |
| 180 | newchannel->ChannelCallbackContext = context; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 181 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 182 | /* Allocate the ring buffer */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 183 | out = osd_PageAlloc((send_ringbuffer_size + recv_ringbuffer_size) |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 184 | >> PAGE_SHIFT); |
Bill Pemberton | 7e052d9 | 2010-05-05 15:27:30 -0400 | [diff] [blame] | 185 | if (!out) |
| 186 | return -ENOMEM; |
| 187 | |
Bill Pemberton | 0ace247 | 2010-05-05 15:27:40 -0400 | [diff] [blame] | 188 | /* ASSERT(((unsigned long)out & (PAGE_SIZE-1)) == 0); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 189 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 190 | in = (void *)((unsigned long)out + send_ringbuffer_size); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 191 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 192 | newchannel->RingBufferPages = out; |
| 193 | newchannel->RingBufferPageCount = (send_ringbuffer_size + |
| 194 | recv_ringbuffer_size) >> PAGE_SHIFT; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 195 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 196 | ret = RingBufferInit(&newchannel->Outbound, out, send_ringbuffer_size); |
Haiyang Zhang | fd4dc88 | 2010-05-13 15:56:30 +0000 | [diff] [blame] | 197 | if (ret != 0) { |
Bill Pemberton | 3324fb4 | 2010-05-05 15:27:49 -0400 | [diff] [blame] | 198 | err = ret; |
| 199 | goto errorout; |
| 200 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 201 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 202 | ret = RingBufferInit(&newchannel->Inbound, in, recv_ringbuffer_size); |
Haiyang Zhang | fd4dc88 | 2010-05-13 15:56:30 +0000 | [diff] [blame] | 203 | if (ret != 0) { |
Bill Pemberton | 3324fb4 | 2010-05-05 15:27:49 -0400 | [diff] [blame] | 204 | err = ret; |
| 205 | goto errorout; |
| 206 | } |
| 207 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 208 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 209 | /* Establish the gpadl for the ring buffer */ |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 210 | DPRINT_DBG(VMBUS, "Establishing ring buffer's gpadl for channel %p...", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 211 | newchannel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 212 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 213 | newchannel->RingBufferGpadlHandle = 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 214 | |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 215 | ret = vmbus_establish_gpadl(newchannel, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 216 | newchannel->Outbound.RingBuffer, |
| 217 | send_ringbuffer_size + |
| 218 | recv_ringbuffer_size, |
| 219 | &newchannel->RingBufferGpadlHandle); |
Bill Pemberton | b94ef34 | 2010-05-05 15:27:37 -0400 | [diff] [blame] | 220 | |
Haiyang Zhang | fd4dc88 | 2010-05-13 15:56:30 +0000 | [diff] [blame] | 221 | if (ret != 0) { |
Bill Pemberton | b94ef34 | 2010-05-05 15:27:37 -0400 | [diff] [blame] | 222 | err = ret; |
| 223 | goto errorout; |
| 224 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 225 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 226 | DPRINT_DBG(VMBUS, "channel %p <relid %d gpadl 0x%x send ring %p " |
| 227 | "size %d recv ring %p size %d, downstreamoffset %d>", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 228 | newchannel, newchannel->OfferMsg.ChildRelId, |
| 229 | newchannel->RingBufferGpadlHandle, |
| 230 | newchannel->Outbound.RingBuffer, |
| 231 | newchannel->Outbound.RingSize, |
| 232 | newchannel->Inbound.RingBuffer, |
| 233 | newchannel->Inbound.RingSize, |
| 234 | send_ringbuffer_size); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 235 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 236 | /* Create and init the channel open message */ |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 237 | openInfo = kmalloc(sizeof(*openInfo) + |
| 238 | sizeof(struct vmbus_channel_open_channel), |
| 239 | GFP_KERNEL); |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 240 | if (!openInfo) { |
| 241 | err = -ENOMEM; |
| 242 | goto errorout; |
| 243 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 244 | |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 245 | openInfo->WaitEvent = osd_WaitEventCreate(); |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 246 | if (!openInfo->WaitEvent) { |
| 247 | err = -ENOMEM; |
| 248 | goto errorout; |
| 249 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 250 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 251 | openMsg = (struct vmbus_channel_open_channel *)openInfo->Msg; |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 252 | openMsg->Header.MessageType = ChannelMessageOpenChannel; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 253 | openMsg->OpenId = newchannel->OfferMsg.ChildRelId; /* FIXME */ |
| 254 | openMsg->ChildRelId = newchannel->OfferMsg.ChildRelId; |
| 255 | openMsg->RingBufferGpadlHandle = newchannel->RingBufferGpadlHandle; |
| 256 | openMsg->DownstreamRingBufferPageOffset = send_ringbuffer_size >> |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 257 | PAGE_SHIFT; |
| 258 | openMsg->ServerContextAreaGpadlHandle = 0; /* TODO */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 259 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 260 | if (userdatalen > MAX_USER_DEFINED_BYTES) { |
Bill Pemberton | c827f94 | 2010-05-05 15:27:38 -0400 | [diff] [blame] | 261 | err = -EINVAL; |
| 262 | goto errorout; |
| 263 | } |
| 264 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 265 | if (userdatalen) |
| 266 | memcpy(openMsg->UserData, userdata, userdatalen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 267 | |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 268 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Bill Pemberton | 53af545 | 2009-09-11 21:46:44 -0400 | [diff] [blame] | 269 | list_add_tail(&openInfo->MsgListEntry, |
| 270 | &gVmbusConnection.ChannelMsgList); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 271 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 272 | |
| 273 | DPRINT_DBG(VMBUS, "Sending channel open msg..."); |
| 274 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 275 | ret = VmbusPostMessage(openMsg, |
| 276 | sizeof(struct vmbus_channel_open_channel)); |
| 277 | if (ret != 0) { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 278 | DPRINT_ERR(VMBUS, "unable to open channel - %d", ret); |
| 279 | goto Cleanup; |
| 280 | } |
| 281 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 282 | /* FIXME: Need to time-out here */ |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 283 | osd_WaitEventWait(openInfo->WaitEvent); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 284 | |
| 285 | if (openInfo->Response.OpenResult.Status == 0) |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 286 | DPRINT_INFO(VMBUS, "channel <%p> open success!!", newchannel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 287 | else |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 288 | DPRINT_INFO(VMBUS, "channel <%p> open failed - %d!!", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 289 | newchannel, openInfo->Response.OpenResult.Status); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 290 | |
| 291 | Cleanup: |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 292 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Bill Pemberton | 53af545 | 2009-09-11 21:46:44 -0400 | [diff] [blame] | 293 | list_del(&openInfo->MsgListEntry); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 294 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 295 | |
Bill Pemberton | 420beac | 2009-07-29 17:00:10 -0400 | [diff] [blame] | 296 | kfree(openInfo->WaitEvent); |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 297 | kfree(openInfo); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 298 | return 0; |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 299 | |
| 300 | errorout: |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 301 | RingBufferCleanup(&newchannel->Outbound); |
| 302 | RingBufferCleanup(&newchannel->Inbound); |
| 303 | osd_PageFree(out, (send_ringbuffer_size + recv_ringbuffer_size) |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 304 | >> PAGE_SHIFT); |
| 305 | kfree(openInfo); |
| 306 | return err; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 307 | } |
| 308 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 309 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 310 | * dump_gpadl_body - Dump the gpadl body message to the console for |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 311 | * debugging purposes. |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 312 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 313 | static void dump_gpadl_body(struct vmbus_channel_gpadl_body *gpadl, u32 len) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 314 | { |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 315 | int i; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 316 | int pfncount; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 317 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 318 | pfncount = (len - sizeof(struct vmbus_channel_gpadl_body)) / |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 319 | sizeof(u64); |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 320 | DPRINT_DBG(VMBUS, "gpadl body - len %d pfn count %d", len, pfncount); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 321 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 322 | for (i = 0; i < pfncount; i++) |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 323 | DPRINT_DBG(VMBUS, "gpadl body - %d) pfn %llu", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 324 | i, gpadl->Pfn[i]); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 325 | } |
| 326 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 327 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 328 | * dump_gpadl_header - Dump the gpadl header message to the console for |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 329 | * debugging purposes. |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 330 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 331 | static void dump_gpadl_header(struct vmbus_channel_gpadl_header *gpadl) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 332 | { |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 333 | int i, j; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 334 | int pagecount; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 335 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 336 | DPRINT_DBG(VMBUS, |
| 337 | "gpadl header - relid %d, range count %d, range buflen %d", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 338 | gpadl->ChildRelId, gpadl->RangeCount, gpadl->RangeBufLen); |
| 339 | for (i = 0; i < gpadl->RangeCount; i++) { |
| 340 | pagecount = gpadl->Range[i].ByteCount >> PAGE_SHIFT; |
| 341 | pagecount = (pagecount > 26) ? 26 : pagecount; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 342 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 343 | DPRINT_DBG(VMBUS, "gpadl range %d - len %d offset %d " |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 344 | "page count %d", i, gpadl->Range[i].ByteCount, |
| 345 | gpadl->Range[i].ByteOffset, pagecount); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 346 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 347 | for (j = 0; j < pagecount; j++) |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 348 | DPRINT_DBG(VMBUS, "%d) pfn %llu", j, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 349 | gpadl->Range[i].PfnArray[j]); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 350 | } |
| 351 | } |
| 352 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 353 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 354 | * create_gpadl_header - Creates a gpadl for the specified buffer |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 355 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 356 | static int create_gpadl_header(void *kbuffer, u32 size, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 357 | struct vmbus_channel_msginfo **msginfo, |
| 358 | u32 *messagecount) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 359 | { |
| 360 | int i; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 361 | int pagecount; |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 362 | unsigned long long pfn; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 363 | struct vmbus_channel_gpadl_header *gpadl_header; |
| 364 | struct vmbus_channel_gpadl_body *gpadl_body; |
| 365 | struct vmbus_channel_msginfo *msgheader; |
| 366 | struct vmbus_channel_msginfo *msgbody = NULL; |
| 367 | u32 msgsize; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 368 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 369 | int pfnsum, pfncount, pfnleft, pfncurr, pfnsize; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 370 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 371 | /* ASSERT((kbuffer & (PAGE_SIZE-1)) == 0); */ |
Bill Pemberton | 0ace247 | 2010-05-05 15:27:40 -0400 | [diff] [blame] | 372 | /* ASSERT((Size & (PAGE_SIZE-1)) == 0); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 373 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 374 | pagecount = size >> PAGE_SHIFT; |
| 375 | pfn = virt_to_phys(kbuffer) >> PAGE_SHIFT; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 376 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 377 | /* do we need a gpadl body msg */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 378 | pfnsize = MAX_SIZE_CHANNEL_MESSAGE - |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 379 | sizeof(struct vmbus_channel_gpadl_header) - |
| 380 | sizeof(struct gpa_range); |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 381 | pfncount = pfnsize / sizeof(u64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 382 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 383 | if (pagecount > pfncount) { |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 384 | /* we need a gpadl body */ |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 385 | /* fill in the header */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 386 | msgsize = sizeof(struct vmbus_channel_msginfo) + |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 387 | sizeof(struct vmbus_channel_gpadl_header) + |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 388 | sizeof(struct gpa_range) + pfncount * sizeof(u64); |
| 389 | msgheader = kzalloc(msgsize, GFP_KERNEL); |
| 390 | if (!msgheader) |
Bill Pemberton | d1c250b | 2010-05-05 15:27:35 -0400 | [diff] [blame] | 391 | goto nomem; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 392 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 393 | INIT_LIST_HEAD(&msgheader->SubMsgList); |
| 394 | msgheader->MessageSize = msgsize; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 395 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 396 | gpadl_header = (struct vmbus_channel_gpadl_header *) |
| 397 | msgheader->Msg; |
| 398 | gpadl_header->RangeCount = 1; |
| 399 | gpadl_header->RangeBufLen = sizeof(struct gpa_range) + |
| 400 | pagecount * sizeof(u64); |
| 401 | gpadl_header->Range[0].ByteOffset = 0; |
| 402 | gpadl_header->Range[0].ByteCount = size; |
| 403 | for (i = 0; i < pfncount; i++) |
| 404 | gpadl_header->Range[0].PfnArray[i] = pfn+i; |
| 405 | *msginfo = msgheader; |
| 406 | *messagecount = 1; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 407 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 408 | pfnsum = pfncount; |
| 409 | pfnleft = pagecount - pfncount; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 410 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 411 | /* how many pfns can we fit */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 412 | pfnsize = MAX_SIZE_CHANNEL_MESSAGE - |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 413 | sizeof(struct vmbus_channel_gpadl_body); |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 414 | pfncount = pfnsize / sizeof(u64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 415 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 416 | /* fill in the body */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 417 | while (pfnleft) { |
| 418 | if (pfnleft > pfncount) |
| 419 | pfncurr = pfncount; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 420 | else |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 421 | pfncurr = pfnleft; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 422 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 423 | msgsize = sizeof(struct vmbus_channel_msginfo) + |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 424 | sizeof(struct vmbus_channel_gpadl_body) + |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 425 | pfncurr * sizeof(u64); |
| 426 | msgbody = kzalloc(msgsize, GFP_KERNEL); |
Bill Pemberton | d1c250b | 2010-05-05 15:27:35 -0400 | [diff] [blame] | 427 | /* FIXME: we probably need to more if this fails */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 428 | if (!msgbody) |
Bill Pemberton | d1c250b | 2010-05-05 15:27:35 -0400 | [diff] [blame] | 429 | goto nomem; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 430 | msgbody->MessageSize = msgsize; |
| 431 | (*messagecount)++; |
| 432 | gpadl_body = |
| 433 | (struct vmbus_channel_gpadl_body *)msgbody->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 434 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 435 | /* |
| 436 | * FIXME: |
| 437 | * Gpadl is u32 and we are using a pointer which could |
| 438 | * be 64-bit |
| 439 | */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 440 | /* gpadl_body->Gpadl = kbuffer; */ |
| 441 | for (i = 0; i < pfncurr; i++) |
| 442 | gpadl_body->Pfn[i] = pfn + pfnsum + i; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 443 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 444 | /* add to msg header */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 445 | list_add_tail(&msgbody->MsgListEntry, |
| 446 | &msgheader->SubMsgList); |
| 447 | pfnsum += pfncurr; |
| 448 | pfnleft -= pfncurr; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 449 | } |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 450 | } else { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 451 | /* everything fits in a header */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 452 | msgsize = sizeof(struct vmbus_channel_msginfo) + |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 453 | sizeof(struct vmbus_channel_gpadl_header) + |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 454 | sizeof(struct gpa_range) + pagecount * sizeof(u64); |
| 455 | msgheader = kzalloc(msgsize, GFP_KERNEL); |
| 456 | if (msgheader == NULL) |
Kulikov Vasiliy | e3eb7cd | 2010-07-16 20:13:51 +0400 | [diff] [blame] | 457 | goto nomem; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 458 | msgheader->MessageSize = msgsize; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 459 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 460 | gpadl_header = (struct vmbus_channel_gpadl_header *) |
| 461 | msgheader->Msg; |
| 462 | gpadl_header->RangeCount = 1; |
| 463 | gpadl_header->RangeBufLen = sizeof(struct gpa_range) + |
| 464 | pagecount * sizeof(u64); |
| 465 | gpadl_header->Range[0].ByteOffset = 0; |
| 466 | gpadl_header->Range[0].ByteCount = size; |
| 467 | for (i = 0; i < pagecount; i++) |
| 468 | gpadl_header->Range[0].PfnArray[i] = pfn+i; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 469 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 470 | *msginfo = msgheader; |
| 471 | *messagecount = 1; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 472 | } |
| 473 | |
| 474 | return 0; |
Bill Pemberton | d1c250b | 2010-05-05 15:27:35 -0400 | [diff] [blame] | 475 | nomem: |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 476 | kfree(msgheader); |
| 477 | kfree(msgbody); |
Bill Pemberton | d1c250b | 2010-05-05 15:27:35 -0400 | [diff] [blame] | 478 | return -ENOMEM; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 479 | } |
| 480 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 481 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 482 | * vmbus_establish_gpadl - Estabish a GPADL for the specified buffer |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 483 | * |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 484 | * @channel: a channel |
| 485 | * @kbuffer: from kmalloc |
| 486 | * @size: page-size multiple |
| 487 | * @gpadl_handle: some funky thing |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 488 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 489 | int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 490 | u32 size, u32 *gpadl_handle) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 491 | { |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 492 | struct vmbus_channel_gpadl_header *gpadlmsg; |
| 493 | struct vmbus_channel_gpadl_body *gpadl_body; |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 494 | /* struct vmbus_channel_gpadl_created *gpadlCreated; */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 495 | struct vmbus_channel_msginfo *msginfo = NULL; |
| 496 | struct vmbus_channel_msginfo *submsginfo; |
| 497 | u32 msgcount; |
Bill Pemberton | 53af545 | 2009-09-11 21:46:44 -0400 | [diff] [blame] | 498 | struct list_head *curr; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 499 | u32 next_gpadl_handle; |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 500 | unsigned long flags; |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 501 | int ret = 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 502 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 503 | next_gpadl_handle = atomic_read(&gVmbusConnection.NextGpadlHandle); |
Bill Pemberton | f488841 | 2009-07-29 17:00:12 -0400 | [diff] [blame] | 504 | atomic_inc(&gVmbusConnection.NextGpadlHandle); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 505 | |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 506 | ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount); |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 507 | if (ret) |
| 508 | return ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 509 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 510 | msginfo->WaitEvent = osd_WaitEventCreate(); |
| 511 | if (!msginfo->WaitEvent) { |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 512 | ret = -ENOMEM; |
| 513 | goto Cleanup; |
| 514 | } |
| 515 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 516 | gpadlmsg = (struct vmbus_channel_gpadl_header *)msginfo->Msg; |
| 517 | gpadlmsg->Header.MessageType = ChannelMessageGpadlHeader; |
| 518 | gpadlmsg->ChildRelId = channel->OfferMsg.ChildRelId; |
| 519 | gpadlmsg->Gpadl = next_gpadl_handle; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 520 | |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 521 | dump_gpadl_header(gpadlmsg); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 522 | |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 523 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 524 | list_add_tail(&msginfo->MsgListEntry, |
Bill Pemberton | 53af545 | 2009-09-11 21:46:44 -0400 | [diff] [blame] | 525 | &gVmbusConnection.ChannelMsgList); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 526 | |
Bill Pemberton | 53af545 | 2009-09-11 21:46:44 -0400 | [diff] [blame] | 527 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 528 | DPRINT_DBG(VMBUS, "buffer %p, size %d msg cnt %d", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 529 | kbuffer, size, msgcount); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 530 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 531 | DPRINT_DBG(VMBUS, "Sending GPADL Header - len %zd", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 532 | msginfo->MessageSize - sizeof(*msginfo)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 533 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 534 | ret = VmbusPostMessage(gpadlmsg, msginfo->MessageSize - |
| 535 | sizeof(*msginfo)); |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 536 | if (ret != 0) { |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 537 | DPRINT_ERR(VMBUS, "Unable to open channel - %d", ret); |
| 538 | goto Cleanup; |
| 539 | } |
| 540 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 541 | if (msgcount > 1) { |
| 542 | list_for_each(curr, &msginfo->SubMsgList) { |
Bill Pemberton | 53af545 | 2009-09-11 21:46:44 -0400 | [diff] [blame] | 543 | |
| 544 | /* FIXME: should this use list_entry() instead ? */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 545 | submsginfo = (struct vmbus_channel_msginfo *)curr; |
| 546 | gpadl_body = |
| 547 | (struct vmbus_channel_gpadl_body *)submsginfo->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 548 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 549 | gpadl_body->Header.MessageType = |
| 550 | ChannelMessageGpadlBody; |
| 551 | gpadl_body->Gpadl = next_gpadl_handle; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 552 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 553 | DPRINT_DBG(VMBUS, "Sending GPADL Body - len %zd", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 554 | submsginfo->MessageSize - |
| 555 | sizeof(*submsginfo)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 556 | |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 557 | dump_gpadl_body(gpadl_body, submsginfo->MessageSize - |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 558 | sizeof(*submsginfo)); |
| 559 | ret = VmbusPostMessage(gpadl_body, |
| 560 | submsginfo->MessageSize - |
| 561 | sizeof(*submsginfo)); |
Haiyang Zhang | fd4dc88 | 2010-05-13 15:56:30 +0000 | [diff] [blame] | 562 | if (ret != 0) |
Bill Pemberton | 9925915 | 2010-05-05 15:27:36 -0400 | [diff] [blame] | 563 | goto Cleanup; |
| 564 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 565 | } |
| 566 | } |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 567 | osd_WaitEventWait(msginfo->WaitEvent); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 568 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 569 | /* At this point, we received the gpadl created msg */ |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 570 | DPRINT_DBG(VMBUS, "Received GPADL created " |
| 571 | "(relid %d, status %d handle %x)", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 572 | channel->OfferMsg.ChildRelId, |
| 573 | msginfo->Response.GpadlCreated.CreationStatus, |
| 574 | gpadlmsg->Gpadl); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 575 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 576 | *gpadl_handle = gpadlmsg->Gpadl; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 577 | |
| 578 | Cleanup: |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 579 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 580 | list_del(&msginfo->MsgListEntry); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 581 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 582 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 583 | kfree(msginfo->WaitEvent); |
| 584 | kfree(msginfo); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 585 | return ret; |
| 586 | } |
| 587 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 588 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 589 | * vmbus_teardown_gpadl -Teardown the specified GPADL handle |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 590 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 591 | int vmbus_teardown_gpadl(struct vmbus_channel *channel, u32 gpadl_handle) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 592 | { |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 593 | struct vmbus_channel_gpadl_teardown *msg; |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 594 | struct vmbus_channel_msginfo *info; |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 595 | unsigned long flags; |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 596 | int ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 597 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 598 | /* ASSERT(gpadl_handle != 0); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 599 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 600 | info = kmalloc(sizeof(*info) + |
| 601 | sizeof(struct vmbus_channel_gpadl_teardown), GFP_KERNEL); |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 602 | if (!info) |
| 603 | return -ENOMEM; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 604 | |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 605 | info->WaitEvent = osd_WaitEventCreate(); |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 606 | if (!info->WaitEvent) { |
| 607 | kfree(info); |
| 608 | return -ENOMEM; |
| 609 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 610 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 611 | msg = (struct vmbus_channel_gpadl_teardown *)info->Msg; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 612 | |
| 613 | msg->Header.MessageType = ChannelMessageGpadlTeardown; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 614 | msg->ChildRelId = channel->OfferMsg.ChildRelId; |
| 615 | msg->Gpadl = gpadl_handle; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 616 | |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 617 | spin_lock_irqsave(&gVmbusConnection.channelmsg_lock, flags); |
Bill Pemberton | 53af545 | 2009-09-11 21:46:44 -0400 | [diff] [blame] | 618 | list_add_tail(&info->MsgListEntry, |
| 619 | &gVmbusConnection.ChannelMsgList); |
Greg Kroah-Hartman | dd0813b | 2009-07-15 14:56:45 -0700 | [diff] [blame] | 620 | spin_unlock_irqrestore(&gVmbusConnection.channelmsg_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 621 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 622 | ret = VmbusPostMessage(msg, |
| 623 | sizeof(struct vmbus_channel_gpadl_teardown)); |
| 624 | if (ret != 0) { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 625 | /* TODO: */ |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 626 | /* something... */ |
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); |
Bill Pemberton | 53af545 | 2009-09-11 21:46:44 -0400 | [diff] [blame] | 633 | list_del(&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 | return ret; |
| 639 | } |
Greg Kroah-Hartman | 18726d7 | 2010-10-21 08:39:59 -0700 | [diff] [blame^] | 640 | EXPORT_SYMBOL_GPL(vmbus_teardown_gpadl); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 641 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 642 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 643 | * vmbus_close - Close the specified channel |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 644 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 645 | void vmbus_close(struct vmbus_channel *channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 646 | { |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 647 | struct vmbus_channel_close_channel *msg; |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 648 | struct vmbus_channel_msginfo *info; |
Greg Kroah-Hartman | 0f5e44c | 2009-07-15 14:57:16 -0700 | [diff] [blame] | 649 | unsigned long flags; |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 650 | int ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 651 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 652 | /* Stop callback and cancel the timer asap */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 653 | channel->OnChannelCallback = NULL; |
| 654 | del_timer_sync(&channel->poll_timer); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 655 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 656 | /* Send a closing message */ |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 657 | info = kmalloc(sizeof(*info) + |
| 658 | sizeof(struct vmbus_channel_close_channel), GFP_KERNEL); |
Bill Pemberton | c3bf2e2 | 2010-05-05 15:27:34 -0400 | [diff] [blame] | 659 | /* FIXME: can't do anything other than return here because the |
| 660 | * function is void */ |
| 661 | if (!info) |
| 662 | return; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 663 | |
Greg Kroah-Hartman | bfc30aa | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 664 | /* info->waitEvent = osd_WaitEventCreate(); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 665 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 666 | msg = (struct vmbus_channel_close_channel *)info->Msg; |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 667 | msg->Header.MessageType = ChannelMessageCloseChannel; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 668 | msg->ChildRelId = channel->OfferMsg.ChildRelId; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 669 | |
Greg Kroah-Hartman | 8225021 | 2009-08-26 15:16:04 -0700 | [diff] [blame] | 670 | ret = VmbusPostMessage(msg, sizeof(struct vmbus_channel_close_channel)); |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 671 | if (ret != 0) { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 672 | /* TODO: */ |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 673 | /* something... */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 674 | } |
| 675 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 676 | /* Tear down the gpadl for the channel's ring buffer */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 677 | if (channel->RingBufferGpadlHandle) |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 678 | vmbus_teardown_gpadl(channel, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 679 | channel->RingBufferGpadlHandle); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 680 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 681 | /* TODO: Send a msg to release the childRelId */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 682 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 683 | /* Cleanup the ring buffers for this channel */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 684 | RingBufferCleanup(&channel->Outbound); |
| 685 | RingBufferCleanup(&channel->Inbound); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 686 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 687 | osd_PageFree(channel->RingBufferPages, channel->RingBufferPageCount); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 688 | |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 689 | kfree(info); |
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 | /* |
| 692 | * If we are closing the channel during an error path in |
| 693 | * opening the channel, don't free the channel since the |
| 694 | * caller will free the channel |
| 695 | */ |
| 696 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 697 | if (channel->State == CHANNEL_OPEN_STATE) { |
Greg Kroah-Hartman | 0f5e44c | 2009-07-15 14:57:16 -0700 | [diff] [blame] | 698 | spin_lock_irqsave(&gVmbusConnection.channel_lock, flags); |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 699 | list_del(&channel->ListEntry); |
Greg Kroah-Hartman | 0f5e44c | 2009-07-15 14:57:16 -0700 | [diff] [blame] | 700 | spin_unlock_irqrestore(&gVmbusConnection.channel_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 701 | |
Haiyang Zhang | e98cb27 | 2010-10-15 10:14:07 -0700 | [diff] [blame] | 702 | free_channel(channel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 703 | } |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 704 | } |
| 705 | |
Hank Janssen | c88c4e4 | 2010-05-04 15:55:05 -0700 | [diff] [blame] | 706 | /** |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 707 | * vmbus_sendpacket() - Send the specified buffer on the given channel |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 708 | * @channel: Pointer to vmbus_channel structure. |
| 709 | * @buffer: Pointer to the buffer you want to receive the data into. |
| 710 | * @bufferlen: Maximum size of what the the buffer will hold |
| 711 | * @requestid: Identifier of the request |
| 712 | * @type: Type of packet that is being send e.g. negotiate, time |
Hank Janssen | c88c4e4 | 2010-05-04 15:55:05 -0700 | [diff] [blame] | 713 | * packet etc. |
| 714 | * |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 715 | * Sends data in @buffer directly to hyper-v via the vmbus |
Hank Janssen | c88c4e4 | 2010-05-04 15:55:05 -0700 | [diff] [blame] | 716 | * This will send the data unparsed to hyper-v. |
| 717 | * |
| 718 | * Mainly used by Hyper-V drivers. |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 719 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 720 | int vmbus_sendpacket(struct vmbus_channel *channel, const void *buffer, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 721 | u32 bufferlen, u64 requestid, |
| 722 | enum vmbus_packet_type type, u32 flags) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 723 | { |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 724 | struct vmpacket_descriptor desc; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 725 | u32 packetlen = sizeof(struct vmpacket_descriptor) + bufferlen; |
| 726 | u32 packetlen_aligned = ALIGN_UP(packetlen, sizeof(u64)); |
| 727 | struct scatterlist bufferlist[3]; |
| 728 | u64 aligned_data = 0; |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 729 | int ret; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 730 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 731 | DPRINT_DBG(VMBUS, "channel %p buffer %p len %d", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 732 | channel, buffer, bufferlen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 733 | |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 734 | dump_vmbus_channel(channel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 735 | |
Bill Pemberton | 0ace247 | 2010-05-05 15:27:40 -0400 | [diff] [blame] | 736 | /* ASSERT((packetLenAligned - packetLen) < sizeof(u64)); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 737 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 738 | /* Setup the descriptor */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 739 | desc.Type = type; /* VmbusPacketTypeDataInBand; */ |
| 740 | desc.Flags = flags; /* VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; */ |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 741 | /* in 8-bytes granularity */ |
| 742 | desc.DataOffset8 = sizeof(struct vmpacket_descriptor) >> 3; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 743 | desc.Length8 = (u16)(packetlen_aligned >> 3); |
| 744 | desc.TransactionId = requestid; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 745 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 746 | sg_init_table(bufferlist, 3); |
| 747 | sg_set_buf(&bufferlist[0], &desc, sizeof(struct vmpacket_descriptor)); |
| 748 | sg_set_buf(&bufferlist[1], buffer, bufferlen); |
| 749 | sg_set_buf(&bufferlist[2], &aligned_data, |
| 750 | packetlen_aligned - packetlen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 751 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 752 | ret = RingBufferWrite(&channel->Outbound, bufferlist, 3); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 753 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 754 | /* TODO: We should determine if this is optional */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 755 | if (ret == 0 && !GetRingBufferInterruptMask(&channel->Outbound)) |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 756 | vmbus_setevent(channel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 757 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 758 | return ret; |
| 759 | } |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 760 | EXPORT_SYMBOL(vmbus_sendpacket); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 761 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 762 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 763 | * vmbus_sendpacket_pagebuffer - Send a range of single-page buffer |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 764 | * packets using a GPADL Direct packet type. |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 765 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 766 | int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 767 | struct hv_page_buffer pagebuffers[], |
| 768 | u32 pagecount, void *buffer, u32 bufferlen, |
| 769 | u64 requestid) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 770 | { |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 771 | int ret; |
| 772 | int i; |
Haiyang Zhang | 430a8e9 | 2010-09-20 21:07:51 +0000 | [diff] [blame] | 773 | struct vmbus_channel_packet_page_buffer desc; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 774 | u32 descsize; |
| 775 | u32 packetlen; |
| 776 | u32 packetlen_aligned; |
| 777 | struct scatterlist bufferlist[3]; |
| 778 | u64 aligned_data = 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 779 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 780 | if (pagecount > MAX_PAGE_BUFFER_COUNT) |
Bill Pemberton | 002b53e | 2010-05-05 15:27:39 -0400 | [diff] [blame] | 781 | return -EINVAL; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 782 | |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 783 | dump_vmbus_channel(channel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 784 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 785 | /* |
Haiyang Zhang | 430a8e9 | 2010-09-20 21:07:51 +0000 | [diff] [blame] | 786 | * Adjust the size down since vmbus_channel_packet_page_buffer is the |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 787 | * largest size we support |
| 788 | */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 789 | descsize = sizeof(struct vmbus_channel_packet_page_buffer) - |
| 790 | ((MAX_PAGE_BUFFER_COUNT - pagecount) * |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 791 | sizeof(struct hv_page_buffer)); |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 792 | packetlen = descsize + bufferlen; |
| 793 | packetlen_aligned = ALIGN_UP(packetlen, sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 794 | |
Bill Pemberton | 0ace247 | 2010-05-05 15:27:40 -0400 | [diff] [blame] | 795 | /* ASSERT((packetLenAligned - packetLen) < sizeof(u64)); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 796 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 797 | /* Setup the descriptor */ |
Haiyang Zhang | 430a8e9 | 2010-09-20 21:07:51 +0000 | [diff] [blame] | 798 | desc.type = VmbusPacketTypeDataUsingGpaDirect; |
| 799 | desc.flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 800 | desc.dataoffset8 = descsize >> 3; /* in 8-bytes grandularity */ |
| 801 | desc.length8 = (u16)(packetlen_aligned >> 3); |
| 802 | desc.transactionid = requestid; |
| 803 | desc.rangecount = pagecount; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 804 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 805 | for (i = 0; i < pagecount; i++) { |
| 806 | desc.range[i].Length = pagebuffers[i].Length; |
| 807 | desc.range[i].Offset = pagebuffers[i].Offset; |
| 808 | desc.range[i].Pfn = pagebuffers[i].Pfn; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 809 | } |
| 810 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 811 | sg_init_table(bufferlist, 3); |
| 812 | sg_set_buf(&bufferlist[0], &desc, descsize); |
| 813 | sg_set_buf(&bufferlist[1], buffer, bufferlen); |
| 814 | sg_set_buf(&bufferlist[2], &aligned_data, |
| 815 | packetlen_aligned - packetlen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 816 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 817 | ret = RingBufferWrite(&channel->Outbound, bufferlist, 3); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 818 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 819 | /* TODO: We should determine if this is optional */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 820 | if (ret == 0 && !GetRingBufferInterruptMask(&channel->Outbound)) |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 821 | vmbus_setevent(channel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 822 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 823 | return ret; |
| 824 | } |
| 825 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 826 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 827 | * vmbus_sendpacket_multipagebuffer - Send a multi-page buffer packet |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 828 | * using a GPADL Direct packet type. |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 829 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 830 | int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 831 | struct hv_multipage_buffer *multi_pagebuffer, |
| 832 | void *buffer, u32 bufferlen, u64 requestid) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 833 | { |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 834 | int ret; |
Haiyang Zhang | 430a8e9 | 2010-09-20 21:07:51 +0000 | [diff] [blame] | 835 | struct vmbus_channel_packet_multipage_buffer desc; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 836 | u32 descsize; |
| 837 | u32 packetlen; |
| 838 | u32 packetlen_aligned; |
| 839 | struct scatterlist bufferlist[3]; |
| 840 | u64 aligned_data = 0; |
| 841 | u32 pfncount = NUM_PAGES_SPANNED(multi_pagebuffer->Offset, |
| 842 | multi_pagebuffer->Length); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 843 | |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 844 | dump_vmbus_channel(channel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 845 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 846 | DPRINT_DBG(VMBUS, "data buffer - offset %u len %u pfn count %u", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 847 | multi_pagebuffer->Offset, |
| 848 | multi_pagebuffer->Length, pfncount); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 849 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 850 | if ((pfncount < 0) || (pfncount > MAX_MULTIPAGE_BUFFER_COUNT)) |
Bill Pemberton | 002b53e | 2010-05-05 15:27:39 -0400 | [diff] [blame] | 851 | return -EINVAL; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 852 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 853 | /* |
Haiyang Zhang | 430a8e9 | 2010-09-20 21:07:51 +0000 | [diff] [blame] | 854 | * Adjust the size down since vmbus_channel_packet_multipage_buffer is |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 855 | * the largest size we support |
| 856 | */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 857 | descsize = sizeof(struct vmbus_channel_packet_multipage_buffer) - |
| 858 | ((MAX_MULTIPAGE_BUFFER_COUNT - pfncount) * |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 859 | sizeof(u64)); |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 860 | packetlen = descsize + bufferlen; |
| 861 | packetlen_aligned = ALIGN_UP(packetlen, sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 862 | |
Bill Pemberton | 0ace247 | 2010-05-05 15:27:40 -0400 | [diff] [blame] | 863 | /* ASSERT((packetLenAligned - packetLen) < sizeof(u64)); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 864 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 865 | /* Setup the descriptor */ |
Haiyang Zhang | 430a8e9 | 2010-09-20 21:07:51 +0000 | [diff] [blame] | 866 | desc.type = VmbusPacketTypeDataUsingGpaDirect; |
| 867 | desc.flags = VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 868 | desc.dataoffset8 = descsize >> 3; /* in 8-bytes grandularity */ |
| 869 | desc.length8 = (u16)(packetlen_aligned >> 3); |
| 870 | desc.transactionid = requestid; |
Haiyang Zhang | 430a8e9 | 2010-09-20 21:07:51 +0000 | [diff] [blame] | 871 | desc.rangecount = 1; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 872 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 873 | desc.range.Length = multi_pagebuffer->Length; |
| 874 | desc.range.Offset = multi_pagebuffer->Offset; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 875 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 876 | memcpy(desc.range.PfnArray, multi_pagebuffer->PfnArray, |
| 877 | pfncount * sizeof(u64)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 878 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 879 | sg_init_table(bufferlist, 3); |
| 880 | sg_set_buf(&bufferlist[0], &desc, descsize); |
| 881 | sg_set_buf(&bufferlist[1], buffer, bufferlen); |
| 882 | sg_set_buf(&bufferlist[2], &aligned_data, |
| 883 | packetlen_aligned - packetlen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 884 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 885 | ret = RingBufferWrite(&channel->Outbound, bufferlist, 3); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 886 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 887 | /* TODO: We should determine if this is optional */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 888 | if (ret == 0 && !GetRingBufferInterruptMask(&channel->Outbound)) |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 889 | vmbus_setevent(channel); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 890 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 891 | return ret; |
| 892 | } |
| 893 | |
Hank Janssen | c88c4e4 | 2010-05-04 15:55:05 -0700 | [diff] [blame] | 894 | |
| 895 | /** |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 896 | * vmbus_recvpacket() - Retrieve the user packet on the specified channel |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 897 | * @channel: Pointer to vmbus_channel structure. |
| 898 | * @buffer: Pointer to the buffer you want to receive the data into. |
| 899 | * @bufferlen: Maximum size of what the the buffer will hold |
| 900 | * @buffer_actual_len: The actual size of the data after it was received |
| 901 | * @requestid: Identifier of the request |
Hank Janssen | c88c4e4 | 2010-05-04 15:55:05 -0700 | [diff] [blame] | 902 | * |
| 903 | * Receives directly from the hyper-v vmbus and puts the data it received |
| 904 | * into Buffer. This will receive the data unparsed from hyper-v. |
| 905 | * |
| 906 | * Mainly used by Hyper-V drivers. |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 907 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 908 | int vmbus_recvpacket(struct vmbus_channel *channel, void *buffer, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 909 | u32 bufferlen, u32 *buffer_actual_len, u64 *requestid) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 910 | { |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 911 | struct vmpacket_descriptor desc; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 912 | u32 packetlen; |
| 913 | u32 userlen; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 914 | int ret; |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 915 | unsigned long flags; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 916 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 917 | *buffer_actual_len = 0; |
| 918 | *requestid = 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 919 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 920 | spin_lock_irqsave(&channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 921 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 922 | ret = RingBufferPeek(&channel->Inbound, &desc, |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 923 | sizeof(struct vmpacket_descriptor)); |
| 924 | if (ret != 0) { |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 925 | spin_unlock_irqrestore(&channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 926 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 927 | /* DPRINT_DBG(VMBUS, "nothing to read!!"); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 928 | return 0; |
| 929 | } |
| 930 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 931 | /* VmbusChannelClearEvent(Channel); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 932 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 933 | packetlen = desc.Length8 << 3; |
| 934 | userlen = packetlen - (desc.DataOffset8 << 3); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 935 | /* ASSERT(userLen > 0); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 936 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 937 | DPRINT_DBG(VMBUS, "packet received on channel %p relid %d <type %d " |
| 938 | "flag %d tid %llx pktlen %d datalen %d> ", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 939 | channel, channel->OfferMsg.ChildRelId, desc.Type, |
| 940 | desc.Flags, desc.TransactionId, packetlen, userlen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 941 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 942 | *buffer_actual_len = userlen; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 943 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 944 | if (userlen > bufferlen) { |
| 945 | spin_unlock_irqrestore(&channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 946 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 947 | DPRINT_ERR(VMBUS, "buffer too small - got %d needs %d", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 948 | bufferlen, userlen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 949 | return -1; |
| 950 | } |
| 951 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 952 | *requestid = desc.TransactionId; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 953 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 954 | /* Copy over the packet to the user buffer */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 955 | ret = RingBufferRead(&channel->Inbound, buffer, userlen, |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 956 | (desc.DataOffset8 << 3)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 957 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 958 | spin_unlock_irqrestore(&channel->inbound_lock, flags); |
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 | return 0; |
| 961 | } |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 962 | EXPORT_SYMBOL(vmbus_recvpacket); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 963 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 964 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 965 | * vmbus_recvpacket_raw - Retrieve the raw packet on the specified channel |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 966 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 967 | int vmbus_recvpacket_raw(struct vmbus_channel *channel, void *buffer, |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 968 | u32 bufferlen, u32 *buffer_actual_len, |
| 969 | u64 *requestid) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 970 | { |
Greg Kroah-Hartman | 8dc0a06 | 2009-08-27 16:02:36 -0700 | [diff] [blame] | 971 | struct vmpacket_descriptor desc; |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 972 | u32 packetlen; |
| 973 | u32 userlen; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 974 | int ret; |
Greg Kroah-Hartman | 54411c4 | 2009-07-15 14:48:32 -0700 | [diff] [blame] | 975 | unsigned long flags; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 976 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 977 | *buffer_actual_len = 0; |
| 978 | *requestid = 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 979 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 980 | spin_lock_irqsave(&channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 981 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 982 | ret = RingBufferPeek(&channel->Inbound, &desc, |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 983 | sizeof(struct vmpacket_descriptor)); |
| 984 | if (ret != 0) { |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 985 | spin_unlock_irqrestore(&channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 986 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 987 | /* DPRINT_DBG(VMBUS, "nothing to read!!"); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 988 | return 0; |
| 989 | } |
| 990 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 991 | /* VmbusChannelClearEvent(Channel); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 992 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 993 | packetlen = desc.Length8 << 3; |
| 994 | userlen = packetlen - (desc.DataOffset8 << 3); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 995 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 996 | DPRINT_DBG(VMBUS, "packet received on channel %p relid %d <type %d " |
| 997 | "flag %d tid %llx pktlen %d datalen %d> ", |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 998 | channel, channel->OfferMsg.ChildRelId, desc.Type, |
| 999 | desc.Flags, desc.TransactionId, packetlen, userlen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1000 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 1001 | *buffer_actual_len = packetlen; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1002 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 1003 | if (packetlen > bufferlen) { |
| 1004 | spin_unlock_irqrestore(&channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1005 | |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 1006 | DPRINT_ERR(VMBUS, "buffer too small - needed %d bytes but " |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 1007 | "got space for only %d bytes", packetlen, bufferlen); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1008 | return -2; |
| 1009 | } |
| 1010 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 1011 | *requestid = desc.TransactionId; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1012 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 1013 | /* Copy over the entire packet to the user buffer */ |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 1014 | ret = RingBufferRead(&channel->Inbound, buffer, packetlen, 0); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1015 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 1016 | spin_unlock_irqrestore(&channel->inbound_lock, flags); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1017 | return 0; |
| 1018 | } |
| 1019 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 1020 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 1021 | * vmbus_onchannel_event - Channel event callback |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 1022 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 1023 | void vmbus_onchannel_event(struct vmbus_channel *channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1024 | { |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 1025 | dump_vmbus_channel(channel); |
Bill Pemberton | 0ace247 | 2010-05-05 15:27:40 -0400 | [diff] [blame] | 1026 | /* ASSERT(Channel->OnChannelCallback); */ |
Haiyang Zhang | 5996b3d | 2009-11-20 16:29:17 +0000 | [diff] [blame] | 1027 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 1028 | channel->OnChannelCallback(channel->ChannelCallbackContext); |
Haiyang Zhang | 5996b3d | 2009-11-20 16:29:17 +0000 | [diff] [blame] | 1029 | |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 1030 | mod_timer(&channel->poll_timer, jiffies + usecs_to_jiffies(100)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1031 | } |
| 1032 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 1033 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 1034 | * vmbus_ontimer - Timer event callback |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 1035 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 1036 | void vmbus_ontimer(unsigned long data) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1037 | { |
Greg Kroah-Hartman | aded7165 | 2009-08-18 15:21:19 -0700 | [diff] [blame] | 1038 | struct vmbus_channel *channel = (struct vmbus_channel *)data; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1039 | |
Chris Nicholson | 0fa37b1 | 2010-02-20 20:36:23 +0000 | [diff] [blame] | 1040 | if (channel->OnChannelCallback) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1041 | channel->OnChannelCallback(channel->ChannelCallbackContext); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1042 | } |
| 1043 | |
Hank Janssen | 3e18951 | 2010-03-04 22:11:00 +0000 | [diff] [blame] | 1044 | /* |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 1045 | * dump_vmbus_channel- Dump vmbus channel info to the console |
Greg Kroah-Hartman | f4266e3 | 2009-09-01 17:24:57 -0700 | [diff] [blame] | 1046 | */ |
Haiyang Zhang | fff41b2 | 2010-10-07 11:40:08 -0700 | [diff] [blame] | 1047 | static void dump_vmbus_channel(struct vmbus_channel *channel) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1048 | { |
Haiyang Zhang | 39d70a4 | 2010-09-30 10:52:13 -0700 | [diff] [blame] | 1049 | DPRINT_DBG(VMBUS, "Channel (%d)", channel->OfferMsg.ChildRelId); |
| 1050 | DumpRingInfo(&channel->Outbound, "Outbound "); |
| 1051 | DumpRingInfo(&channel->Inbound, "Inbound "); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1052 | } |