Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 1 | /* |
Greg Kroah-Hartman | 9b9f93d | 2011-03-02 17:49:30 -0800 | [diff] [blame] | 2 | * Copyright (c) 2009, Citrix Systems, Inc. |
| 3 | * Copyright (c) 2010, Microsoft Corporation. |
| 4 | * Copyright (c) 2011, Novell Inc. |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 5 | * |
Greg Kroah-Hartman | 9b9f93d | 2011-03-02 17:49:30 -0800 | [diff] [blame] | 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms and conditions of the GNU General Public License, |
| 8 | * version 2, as published by the Free Software Foundation. |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 9 | * |
Greg Kroah-Hartman | 9b9f93d | 2011-03-02 17:49:30 -0800 | [diff] [blame] | 10 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 13 | * more details. |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 14 | */ |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/module.h> |
Randy Dunlap | a58c616 | 2011-04-01 09:50:54 -0700 | [diff] [blame] | 17 | #include <linux/delay.h> |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 18 | #include <linux/device.h> |
| 19 | #include <linux/workqueue.h> |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 20 | #include <linux/sched.h> |
| 21 | #include <linux/wait.h> |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 22 | #include <linux/input.h> |
| 23 | #include <linux/hid.h> |
| 24 | #include <linux/hiddev.h> |
| 25 | #include <linux/pci.h> |
| 26 | #include <linux/dmi.h> |
| 27 | |
K. Y. Srinivasan | 3f335ea | 2011-05-12 19:34:15 -0700 | [diff] [blame] | 28 | #include "hyperv.h" |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 29 | |
| 30 | |
Greg Kroah-Hartman | 94fcc88 | 2011-03-02 17:57:51 -0800 | [diff] [blame] | 31 | /* |
| 32 | * Data types |
| 33 | */ |
Greg Kroah-Hartman | 0f88ea5 | 2011-03-02 18:57:04 -0800 | [diff] [blame] | 34 | struct hv_input_dev_info { |
| 35 | unsigned short vendor; |
| 36 | unsigned short product; |
| 37 | unsigned short version; |
| 38 | char name[128]; |
Greg Kroah-Hartman | 94fcc88 | 2011-03-02 17:57:51 -0800 | [diff] [blame] | 39 | }; |
| 40 | |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 41 | /* The maximum size of a synthetic input message. */ |
| 42 | #define SYNTHHID_MAX_INPUT_REPORT_SIZE 16 |
| 43 | |
| 44 | /* |
| 45 | * Current version |
| 46 | * |
| 47 | * History: |
| 48 | * Beta, RC < 2008/1/22 1,0 |
| 49 | * RC > 2008/1/22 2,0 |
| 50 | */ |
Greg Kroah-Hartman | 480c28d | 2011-03-02 19:18:34 -0800 | [diff] [blame] | 51 | #define SYNTHHID_INPUT_VERSION_MAJOR 2 |
| 52 | #define SYNTHHID_INPUT_VERSION_MINOR 0 |
| 53 | #define SYNTHHID_INPUT_VERSION (SYNTHHID_INPUT_VERSION_MINOR | \ |
| 54 | (SYNTHHID_INPUT_VERSION_MAJOR << 16)) |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 55 | |
| 56 | |
Ruslan Pisarev | dbbb249 | 2011-07-22 15:12:47 +0300 | [diff] [blame] | 57 | #pragma pack(push, 1) |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 58 | /* |
| 59 | * Message types in the synthetic input protocol |
| 60 | */ |
| 61 | enum synthhid_msg_type { |
| 62 | SynthHidProtocolRequest, |
| 63 | SynthHidProtocolResponse, |
| 64 | SynthHidInitialDeviceInfo, |
| 65 | SynthHidInitialDeviceInfoAck, |
| 66 | SynthHidInputReport, |
| 67 | SynthHidMax |
| 68 | }; |
| 69 | |
| 70 | /* |
| 71 | * Basic message structures. |
| 72 | */ |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 73 | struct synthhid_msg_hdr { |
Greg Kroah-Hartman | 32ad38f | 2011-03-02 19:01:49 -0800 | [diff] [blame] | 74 | enum synthhid_msg_type type; |
| 75 | u32 size; |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 76 | }; |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 77 | |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 78 | struct synthhid_msg { |
Greg Kroah-Hartman | 0ce815d | 2011-03-02 19:04:09 -0800 | [diff] [blame] | 79 | struct synthhid_msg_hdr header; |
Greg Kroah-Hartman | cb2535a | 2011-03-02 19:11:49 -0800 | [diff] [blame] | 80 | char data[1]; /* Enclosed message */ |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 81 | }; |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 82 | |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 83 | union synthhid_version { |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 84 | struct { |
Greg Kroah-Hartman | 480c28d | 2011-03-02 19:18:34 -0800 | [diff] [blame] | 85 | u16 minor_version; |
| 86 | u16 major_version; |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 87 | }; |
Greg Kroah-Hartman | 480c28d | 2011-03-02 19:18:34 -0800 | [diff] [blame] | 88 | u32 version; |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 89 | }; |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 90 | |
| 91 | /* |
| 92 | * Protocol messages |
| 93 | */ |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 94 | struct synthhid_protocol_request { |
Greg Kroah-Hartman | 0ce815d | 2011-03-02 19:04:09 -0800 | [diff] [blame] | 95 | struct synthhid_msg_hdr header; |
Greg Kroah-Hartman | 480c28d | 2011-03-02 19:18:34 -0800 | [diff] [blame] | 96 | union synthhid_version version_requested; |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 97 | }; |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 98 | |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 99 | struct synthhid_protocol_response { |
Greg Kroah-Hartman | 0ce815d | 2011-03-02 19:04:09 -0800 | [diff] [blame] | 100 | struct synthhid_msg_hdr header; |
Greg Kroah-Hartman | 480c28d | 2011-03-02 19:18:34 -0800 | [diff] [blame] | 101 | union synthhid_version version_requested; |
Greg Kroah-Hartman | 325eae1 | 2011-03-02 19:19:58 -0800 | [diff] [blame] | 102 | unsigned char approved; |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 103 | }; |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 104 | |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 105 | struct synthhid_device_info { |
Greg Kroah-Hartman | 0ce815d | 2011-03-02 19:04:09 -0800 | [diff] [blame] | 106 | struct synthhid_msg_hdr header; |
Greg Kroah-Hartman | 98ad91e | 2011-03-02 19:24:05 -0800 | [diff] [blame] | 107 | struct hv_input_dev_info hid_dev_info; |
Greg Kroah-Hartman | 18bc44e | 2011-03-02 19:27:17 -0800 | [diff] [blame] | 108 | struct hid_descriptor hid_descriptor; |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 109 | }; |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 110 | |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 111 | struct synthhid_device_info_ack { |
Greg Kroah-Hartman | 0ce815d | 2011-03-02 19:04:09 -0800 | [diff] [blame] | 112 | struct synthhid_msg_hdr header; |
Greg Kroah-Hartman | 6ed10de | 2011-03-02 19:29:42 -0800 | [diff] [blame] | 113 | unsigned char reserved; |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 114 | }; |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 115 | |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 116 | struct synthhid_input_report { |
Greg Kroah-Hartman | 0ce815d | 2011-03-02 19:04:09 -0800 | [diff] [blame] | 117 | struct synthhid_msg_hdr header; |
Greg Kroah-Hartman | e93eff9 | 2011-03-02 19:31:39 -0800 | [diff] [blame] | 118 | char buffer[1]; |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 119 | }; |
Greg Kroah-Hartman | fa00350 | 2011-03-02 17:53:58 -0800 | [diff] [blame] | 120 | |
| 121 | #pragma pack(pop) |
| 122 | |
Ruslan Pisarev | dbbb249 | 2011-07-22 15:12:47 +0300 | [diff] [blame] | 123 | #define INPUTVSC_SEND_RING_BUFFER_SIZE (10*PAGE_SIZE) |
| 124 | #define INPUTVSC_RECV_RING_BUFFER_SIZE (10*PAGE_SIZE) |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 125 | |
| 126 | #define NBITS(x) (((x)/BITS_PER_LONG)+1) |
| 127 | |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 128 | enum pipe_prot_msg_type { |
| 129 | PipeMessageInvalid = 0, |
| 130 | PipeMessageData, |
| 131 | PipeMessageMaximum |
| 132 | }; |
| 133 | |
| 134 | |
| 135 | struct pipe_prt_msg { |
Greg Kroah-Hartman | 2012d40 | 2011-03-02 19:36:15 -0800 | [diff] [blame] | 136 | enum pipe_prot_msg_type type; |
Greg Kroah-Hartman | 9877fa4 | 2011-03-02 19:38:29 -0800 | [diff] [blame] | 137 | u32 size; |
Greg Kroah-Hartman | e7de0ad | 2011-03-02 19:39:48 -0800 | [diff] [blame] | 138 | char data[1]; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 139 | }; |
| 140 | |
| 141 | /* |
| 142 | * Data types |
| 143 | */ |
| 144 | struct mousevsc_prt_msg { |
Greg Kroah-Hartman | 2012d40 | 2011-03-02 19:36:15 -0800 | [diff] [blame] | 145 | enum pipe_prot_msg_type type; |
Greg Kroah-Hartman | 9877fa4 | 2011-03-02 19:38:29 -0800 | [diff] [blame] | 146 | u32 size; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 147 | union { |
Greg Kroah-Hartman | 5ff9b90 | 2011-03-02 19:41:00 -0800 | [diff] [blame] | 148 | struct synthhid_protocol_request request; |
| 149 | struct synthhid_protocol_response response; |
| 150 | struct synthhid_device_info_ack ack; |
Greg Kroah-Hartman | d7fa1a4 | 2011-03-02 19:33:17 -0800 | [diff] [blame] | 151 | }; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 152 | }; |
| 153 | |
| 154 | /* |
| 155 | * Represents an mousevsc device |
| 156 | */ |
| 157 | struct mousevsc_dev { |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 158 | struct hv_device *device; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 159 | /* 0 indicates the device is being destroyed */ |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 160 | atomic_t ref_count; |
| 161 | int num_outstanding_req; |
| 162 | unsigned char init_complete; |
| 163 | struct mousevsc_prt_msg protocol_req; |
| 164 | struct mousevsc_prt_msg protocol_resp; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 165 | /* Synchronize the request/response if needed */ |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 166 | wait_queue_head_t protocol_wait_event; |
| 167 | wait_queue_head_t dev_info_wait_event; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 168 | int protocol_wait_condition; |
| 169 | int device_wait_condition; |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 170 | int dev_info_status; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 171 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 172 | struct hid_descriptor *hid_desc; |
| 173 | unsigned char *report_desc; |
| 174 | u32 report_desc_size; |
Greg Kroah-Hartman | 98ad91e | 2011-03-02 19:24:05 -0800 | [diff] [blame] | 175 | struct hv_input_dev_info hid_dev_info; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 176 | }; |
| 177 | |
| 178 | |
Greg Kroah-Hartman | 92d40b7 | 2011-03-02 19:42:19 -0800 | [diff] [blame] | 179 | static const char *driver_name = "mousevsc"; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 180 | |
Greg Kroah-Hartman | 0f88ea5 | 2011-03-02 18:57:04 -0800 | [diff] [blame] | 181 | static void deviceinfo_callback(struct hv_device *dev, struct hv_input_dev_info *info); |
Greg Kroah-Hartman | 4f14313 | 2011-03-02 18:38:31 -0800 | [diff] [blame] | 182 | static void inputreport_callback(struct hv_device *dev, void *packet, u32 len); |
| 183 | static void reportdesc_callback(struct hv_device *dev, void *packet, u32 len); |
| 184 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 185 | static struct mousevsc_dev *alloc_input_device(struct hv_device *device) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 186 | { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 187 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 188 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 189 | input_dev = kzalloc(sizeof(struct mousevsc_dev), GFP_KERNEL); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 190 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 191 | if (!input_dev) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 192 | return NULL; |
| 193 | |
| 194 | /* |
| 195 | * Set to 2 to allow both inbound and outbound traffics |
Hank Janssen | 94e44cb | 2011-04-01 14:32:10 -0700 | [diff] [blame] | 196 | * (ie get_input_device() and must_get_input_device()) to proceed. |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 197 | */ |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 198 | atomic_cmpxchg(&input_dev->ref_count, 0, 2); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 199 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 200 | input_dev->device = device; |
| 201 | device->ext = input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 202 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 203 | return input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 204 | } |
| 205 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 206 | static void free_input_device(struct mousevsc_dev *device) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 207 | { |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 208 | WARN_ON(atomic_read(&device->ref_count) == 0); |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 209 | kfree(device); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | /* |
| 213 | * Get the inputdevice object if exists and its refcount > 1 |
| 214 | */ |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 215 | static struct mousevsc_dev *get_input_device(struct hv_device *device) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 216 | { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 217 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 218 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 219 | input_dev = (struct mousevsc_dev *)device->ext; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 220 | |
| 221 | /* |
| 222 | * FIXME |
| 223 | * This sure isn't a valid thing to print for debugging, no matter |
| 224 | * what the intention is... |
| 225 | * |
| 226 | * printk(KERN_ERR "-------------------------> REFCOUNT = %d", |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 227 | * input_dev->ref_count); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 228 | */ |
| 229 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 230 | if (input_dev && atomic_read(&input_dev->ref_count) > 1) |
| 231 | atomic_inc(&input_dev->ref_count); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 232 | else |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 233 | input_dev = NULL; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 234 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 235 | return input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | /* |
| 239 | * Get the inputdevice object iff exists and its refcount > 0 |
| 240 | */ |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 241 | static struct mousevsc_dev *must_get_input_device(struct hv_device *device) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 242 | { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 243 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 244 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 245 | input_dev = (struct mousevsc_dev *)device->ext; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 246 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 247 | if (input_dev && atomic_read(&input_dev->ref_count)) |
| 248 | atomic_inc(&input_dev->ref_count); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 249 | else |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 250 | input_dev = NULL; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 251 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 252 | return input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 253 | } |
| 254 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 255 | static void put_input_device(struct hv_device *device) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 256 | { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 257 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 258 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 259 | input_dev = (struct mousevsc_dev *)device->ext; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 260 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 261 | atomic_dec(&input_dev->ref_count); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 262 | } |
| 263 | |
| 264 | /* |
Hank Janssen | 94e44cb | 2011-04-01 14:32:10 -0700 | [diff] [blame] | 265 | * Drop ref count to 1 to effectively disable get_input_device() |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 266 | */ |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 267 | static struct mousevsc_dev *release_input_device(struct hv_device *device) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 268 | { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 269 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 270 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 271 | input_dev = (struct mousevsc_dev *)device->ext; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 272 | |
| 273 | /* Busy wait until the ref drop to 2, then set it to 1 */ |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 274 | while (atomic_cmpxchg(&input_dev->ref_count, 2, 1) != 2) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 275 | udelay(100); |
| 276 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 277 | return input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | /* |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 281 | * Drop ref count to 0. No one can use input_device object. |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 282 | */ |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 283 | static struct mousevsc_dev *final_release_input_device(struct hv_device *device) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 284 | { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 285 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 286 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 287 | input_dev = (struct mousevsc_dev *)device->ext; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 288 | |
| 289 | /* Busy wait until the ref drop to 1, then set it to 0 */ |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 290 | while (atomic_cmpxchg(&input_dev->ref_count, 1, 0) != 1) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 291 | udelay(100); |
| 292 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 293 | device->ext = NULL; |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 294 | return input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 295 | } |
| 296 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 297 | static void mousevsc_on_send_completion(struct hv_device *device, |
| 298 | struct vmpacket_descriptor *packet) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 299 | { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 300 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 301 | void *request; |
| 302 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 303 | input_dev = must_get_input_device(device); |
| 304 | if (!input_dev) { |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 305 | pr_err("unable to get input device...device being destroyed?"); |
| 306 | return; |
| 307 | } |
| 308 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 309 | request = (void *)(unsigned long)packet->trans_id; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 310 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 311 | if (request == &input_dev->protocol_req) { |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 312 | /* FIXME */ |
| 313 | /* Shouldn't we be doing something here? */ |
| 314 | } |
| 315 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 316 | put_input_device(device); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 317 | } |
| 318 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 319 | static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device, |
| 320 | struct synthhid_device_info *device_info) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 321 | { |
| 322 | int ret = 0; |
| 323 | struct hid_descriptor *desc; |
| 324 | struct mousevsc_prt_msg ack; |
| 325 | |
| 326 | /* Assume success for now */ |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 327 | input_device->dev_info_status = 0; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 328 | |
| 329 | /* Save the device attr */ |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 330 | memcpy(&input_device->hid_dev_info, &device_info->hid_dev_info, |
| 331 | sizeof(struct hv_input_dev_info)); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 332 | |
| 333 | /* Save the hid desc */ |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 334 | desc = &device_info->hid_descriptor; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 335 | WARN_ON(desc->bLength > 0); |
| 336 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 337 | input_device->hid_desc = kzalloc(desc->bLength, GFP_KERNEL); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 338 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 339 | if (!input_device->hid_desc) { |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 340 | pr_err("unable to allocate hid descriptor - size %d", desc->bLength); |
| 341 | goto Cleanup; |
| 342 | } |
| 343 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 344 | memcpy(input_device->hid_desc, desc, desc->bLength); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 345 | |
| 346 | /* Save the report desc */ |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 347 | input_device->report_desc_size = desc->desc[0].wDescriptorLength; |
| 348 | input_device->report_desc = kzalloc(input_device->report_desc_size, |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 349 | GFP_KERNEL); |
| 350 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 351 | if (!input_device->report_desc) { |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 352 | pr_err("unable to allocate report descriptor - size %d", |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 353 | input_device->report_desc_size); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 354 | goto Cleanup; |
| 355 | } |
| 356 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 357 | memcpy(input_device->report_desc, |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 358 | ((unsigned char *)desc) + desc->bLength, |
| 359 | desc->desc[0].wDescriptorLength); |
| 360 | |
| 361 | /* Send the ack */ |
Dave Jones | 75e4fb2 | 2011-03-16 21:40:59 -0400 | [diff] [blame] | 362 | memset(&ack, 0, sizeof(struct mousevsc_prt_msg)); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 363 | |
Greg Kroah-Hartman | 2012d40 | 2011-03-02 19:36:15 -0800 | [diff] [blame] | 364 | ack.type = PipeMessageData; |
Greg Kroah-Hartman | 9877fa4 | 2011-03-02 19:38:29 -0800 | [diff] [blame] | 365 | ack.size = sizeof(struct synthhid_device_info_ack); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 366 | |
Greg Kroah-Hartman | 5ff9b90 | 2011-03-02 19:41:00 -0800 | [diff] [blame] | 367 | ack.ack.header.type = SynthHidInitialDeviceInfoAck; |
| 368 | ack.ack.header.size = 1; |
| 369 | ack.ack.reserved = 0; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 370 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 371 | ret = vmbus_sendpacket(input_device->device->channel, |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 372 | &ack, |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 373 | sizeof(struct pipe_prt_msg) - sizeof(unsigned char) + |
| 374 | sizeof(struct synthhid_device_info_ack), |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 375 | (unsigned long)&ack, |
| 376 | VM_PKT_DATA_INBAND, |
| 377 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); |
| 378 | if (ret != 0) { |
Greg Kroah-Hartman | e6f83b7 | 2011-03-02 18:21:01 -0800 | [diff] [blame] | 379 | pr_err("unable to send synthhid device info ack - ret %d", |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 380 | ret); |
| 381 | goto Cleanup; |
| 382 | } |
| 383 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 384 | input_device->device_wait_condition = 1; |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 385 | wake_up(&input_device->dev_info_wait_event); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 386 | |
| 387 | return; |
| 388 | |
| 389 | Cleanup: |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 390 | kfree(input_device->hid_desc); |
| 391 | input_device->hid_desc = NULL; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 392 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 393 | kfree(input_device->report_desc); |
| 394 | input_device->report_desc = NULL; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 395 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 396 | input_device->dev_info_status = -1; |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 397 | input_device->device_wait_condition = 1; |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 398 | wake_up(&input_device->dev_info_wait_event); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 399 | } |
| 400 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 401 | static void mousevsc_on_receive_input_report(struct mousevsc_dev *input_device, |
| 402 | struct synthhid_input_report *input_report) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 403 | { |
K. Y. Srinivasan | 746e8ca | 2011-05-10 07:56:16 -0700 | [diff] [blame] | 404 | struct hv_driver *input_drv; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 405 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 406 | if (!input_device->init_complete) { |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 407 | pr_info("Initialization incomplete...ignoring input_report msg"); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 408 | return; |
| 409 | } |
| 410 | |
K. Y. Srinivasan | 746e8ca | 2011-05-10 07:56:16 -0700 | [diff] [blame] | 411 | input_drv = drv_to_hv_drv(input_device->device->device.driver); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 412 | |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 413 | inputreport_callback(input_device->device, |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 414 | input_report->buffer, |
| 415 | input_report->header.size); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 416 | } |
| 417 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 418 | static void mousevsc_on_receive(struct hv_device *device, |
| 419 | struct vmpacket_descriptor *packet) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 420 | { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 421 | struct pipe_prt_msg *pipe_msg; |
| 422 | struct synthhid_msg *hid_msg; |
| 423 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 424 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 425 | input_dev = must_get_input_device(device); |
| 426 | if (!input_dev) { |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 427 | pr_err("unable to get input device...device being destroyed?"); |
| 428 | return; |
| 429 | } |
| 430 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 431 | pipe_msg = (struct pipe_prt_msg *)((unsigned long)packet + |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 432 | (packet->offset8 << 3)); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 433 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 434 | if (pipe_msg->type != PipeMessageData) { |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 435 | pr_err("unknown pipe msg type - type %d len %d", |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 436 | pipe_msg->type, pipe_msg->size); |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 437 | put_input_device(device); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 438 | return ; |
| 439 | } |
| 440 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 441 | hid_msg = (struct synthhid_msg *)&pipe_msg->data[0]; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 442 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 443 | switch (hid_msg->header.type) { |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 444 | case SynthHidProtocolResponse: |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 445 | memcpy(&input_dev->protocol_resp, pipe_msg, |
| 446 | pipe_msg->size + sizeof(struct pipe_prt_msg) - |
Greg Kroah-Hartman | 9877fa4 | 2011-03-02 19:38:29 -0800 | [diff] [blame] | 447 | sizeof(unsigned char)); |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 448 | input_dev->protocol_wait_condition = 1; |
| 449 | wake_up(&input_dev->protocol_wait_event); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 450 | break; |
| 451 | |
| 452 | case SynthHidInitialDeviceInfo: |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 453 | WARN_ON(pipe_msg->size >= sizeof(struct hv_input_dev_info)); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 454 | |
| 455 | /* |
| 456 | * Parse out the device info into device attr, |
| 457 | * hid desc and report desc |
| 458 | */ |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 459 | mousevsc_on_receive_device_info(input_dev, |
| 460 | (struct synthhid_device_info *)&pipe_msg->data[0]); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 461 | break; |
| 462 | case SynthHidInputReport: |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 463 | mousevsc_on_receive_input_report(input_dev, |
| 464 | (struct synthhid_input_report *)&pipe_msg->data[0]); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 465 | |
| 466 | break; |
| 467 | default: |
| 468 | pr_err("unsupported hid msg type - type %d len %d", |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 469 | hid_msg->header.type, hid_msg->header.size); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 470 | break; |
| 471 | } |
| 472 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 473 | put_input_device(device); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 474 | } |
| 475 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 476 | static void mousevsc_on_channel_callback(void *context) |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 477 | { |
| 478 | const int packetSize = 0x100; |
| 479 | int ret = 0; |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 480 | struct hv_device *device = (struct hv_device *)context; |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 481 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 482 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 483 | u32 bytes_recvd; |
| 484 | u64 req_id; |
K. Y. Srinivasan | 459bce9 | 2011-05-12 19:34:43 -0700 | [diff] [blame] | 485 | unsigned char packet[0x100]; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 486 | struct vmpacket_descriptor *desc; |
| 487 | unsigned char *buffer = packet; |
| 488 | int bufferlen = packetSize; |
| 489 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 490 | input_dev = must_get_input_device(device); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 491 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 492 | if (!input_dev) { |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 493 | pr_err("unable to get input device...device being destroyed?"); |
| 494 | return; |
| 495 | } |
| 496 | |
| 497 | do { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 498 | ret = vmbus_recvpacket_raw(device->channel, buffer, |
| 499 | bufferlen, &bytes_recvd, &req_id); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 500 | |
| 501 | if (ret == 0) { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 502 | if (bytes_recvd > 0) { |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 503 | desc = (struct vmpacket_descriptor *)buffer; |
| 504 | |
| 505 | switch (desc->type) { |
Ruslan Pisarev | dbbb249 | 2011-07-22 15:12:47 +0300 | [diff] [blame] | 506 | case VM_PKT_COMP: |
| 507 | mousevsc_on_send_completion( |
| 508 | device, desc); |
| 509 | break; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 510 | |
Ruslan Pisarev | dbbb249 | 2011-07-22 15:12:47 +0300 | [diff] [blame] | 511 | case VM_PKT_DATA_INBAND: |
| 512 | mousevsc_on_receive( |
| 513 | device, desc); |
| 514 | break; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 515 | |
Ruslan Pisarev | dbbb249 | 2011-07-22 15:12:47 +0300 | [diff] [blame] | 516 | default: |
| 517 | pr_err("unhandled packet type %d, tid %llx len %d\n", |
| 518 | desc->type, |
| 519 | req_id, |
| 520 | bytes_recvd); |
| 521 | break; |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 522 | } |
| 523 | |
| 524 | /* reset */ |
| 525 | if (bufferlen > packetSize) { |
| 526 | kfree(buffer); |
| 527 | |
| 528 | buffer = packet; |
| 529 | bufferlen = packetSize; |
| 530 | } |
| 531 | } else { |
| 532 | /* |
| 533 | * pr_debug("nothing else to read..."); |
| 534 | * reset |
| 535 | */ |
| 536 | if (bufferlen > packetSize) { |
| 537 | kfree(buffer); |
| 538 | |
| 539 | buffer = packet; |
| 540 | bufferlen = packetSize; |
| 541 | } |
| 542 | break; |
| 543 | } |
| 544 | } else if (ret == -2) { |
| 545 | /* Handle large packet */ |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 546 | bufferlen = bytes_recvd; |
| 547 | buffer = kzalloc(bytes_recvd, GFP_KERNEL); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 548 | |
| 549 | if (buffer == NULL) { |
| 550 | buffer = packet; |
| 551 | bufferlen = packetSize; |
| 552 | |
| 553 | /* Try again next time around */ |
| 554 | pr_err("unable to allocate buffer of size %d!", |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 555 | bytes_recvd); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 556 | break; |
| 557 | } |
| 558 | } |
| 559 | } while (1); |
| 560 | |
Hank Janssen | 94e44cb | 2011-04-01 14:32:10 -0700 | [diff] [blame] | 561 | put_input_device(device); |
Greg Kroah-Hartman | 9dccaa6 | 2011-03-02 17:42:50 -0800 | [diff] [blame] | 562 | |
| 563 | return; |
| 564 | } |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 565 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 566 | static int mousevsc_connect_to_vsp(struct hv_device *device) |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 567 | { |
| 568 | int ret = 0; |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 569 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 570 | struct mousevsc_prt_msg *request; |
| 571 | struct mousevsc_prt_msg *response; |
| 572 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 573 | input_dev = get_input_device(device); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 574 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 575 | if (!input_dev) { |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 576 | pr_err("unable to get input device...device being destroyed?"); |
| 577 | return -1; |
| 578 | } |
| 579 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 580 | init_waitqueue_head(&input_dev->protocol_wait_event); |
| 581 | init_waitqueue_head(&input_dev->dev_info_wait_event); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 582 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 583 | request = &input_dev->protocol_req; |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 584 | |
| 585 | /* |
| 586 | * Now, initiate the vsc/vsp initialization protocol on the open channel |
| 587 | */ |
Dave Jones | 75e4fb2 | 2011-03-16 21:40:59 -0400 | [diff] [blame] | 588 | memset(request, 0, sizeof(struct mousevsc_prt_msg)); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 589 | |
Greg Kroah-Hartman | 2012d40 | 2011-03-02 19:36:15 -0800 | [diff] [blame] | 590 | request->type = PipeMessageData; |
Greg Kroah-Hartman | 9877fa4 | 2011-03-02 19:38:29 -0800 | [diff] [blame] | 591 | request->size = sizeof(struct synthhid_protocol_request); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 592 | |
Greg Kroah-Hartman | 5ff9b90 | 2011-03-02 19:41:00 -0800 | [diff] [blame] | 593 | request->request.header.type = SynthHidProtocolRequest; |
| 594 | request->request.header.size = sizeof(unsigned long); |
| 595 | request->request.version_requested.version = SYNTHHID_INPUT_VERSION; |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 596 | |
| 597 | pr_info("synthhid protocol request..."); |
| 598 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 599 | ret = vmbus_sendpacket(device->channel, request, |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 600 | sizeof(struct pipe_prt_msg) - |
| 601 | sizeof(unsigned char) + |
| 602 | sizeof(struct synthhid_protocol_request), |
| 603 | (unsigned long)request, |
| 604 | VM_PKT_DATA_INBAND, |
| 605 | VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); |
| 606 | if (ret != 0) { |
| 607 | pr_err("unable to send synthhid protocol request."); |
| 608 | goto Cleanup; |
| 609 | } |
| 610 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 611 | input_dev->protocol_wait_condition = 0; |
| 612 | wait_event_timeout(input_dev->protocol_wait_event, |
| 613 | input_dev->protocol_wait_condition, msecs_to_jiffies(1000)); |
| 614 | if (input_dev->protocol_wait_condition == 0) { |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 615 | ret = -ETIMEDOUT; |
| 616 | goto Cleanup; |
| 617 | } |
| 618 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 619 | response = &input_dev->protocol_resp; |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 620 | |
Greg Kroah-Hartman | 5ff9b90 | 2011-03-02 19:41:00 -0800 | [diff] [blame] | 621 | if (!response->response.approved) { |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 622 | pr_err("synthhid protocol request failed (version %d)", |
Greg Kroah-Hartman | 480c28d | 2011-03-02 19:18:34 -0800 | [diff] [blame] | 623 | SYNTHHID_INPUT_VERSION); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 624 | ret = -1; |
| 625 | goto Cleanup; |
| 626 | } |
| 627 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 628 | input_dev->device_wait_condition = 0; |
| 629 | wait_event_timeout(input_dev->dev_info_wait_event, |
| 630 | input_dev->device_wait_condition, msecs_to_jiffies(1000)); |
| 631 | if (input_dev->device_wait_condition == 0) { |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 632 | ret = -ETIMEDOUT; |
| 633 | goto Cleanup; |
| 634 | } |
| 635 | |
| 636 | /* |
| 637 | * We should have gotten the device attr, hid desc and report |
| 638 | * desc at this point |
| 639 | */ |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 640 | if (!input_dev->dev_info_status) |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 641 | pr_info("**** input channel up and running!! ****"); |
| 642 | else |
| 643 | ret = -1; |
| 644 | |
| 645 | Cleanup: |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 646 | put_input_device(device); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 647 | |
| 648 | return ret; |
| 649 | } |
| 650 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 651 | static int mousevsc_on_device_add(struct hv_device *device, |
| 652 | void *additional_info) |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 653 | { |
| 654 | int ret = 0; |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 655 | struct mousevsc_dev *input_dev; |
K. Y. Srinivasan | 746e8ca | 2011-05-10 07:56:16 -0700 | [diff] [blame] | 656 | struct hv_driver *input_drv; |
Greg Kroah-Hartman | 98ad91e | 2011-03-02 19:24:05 -0800 | [diff] [blame] | 657 | struct hv_input_dev_info dev_info; |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 658 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 659 | input_dev = alloc_input_device(device); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 660 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 661 | if (!input_dev) { |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 662 | ret = -1; |
| 663 | goto Cleanup; |
| 664 | } |
| 665 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 666 | input_dev->init_complete = false; |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 667 | |
| 668 | /* Open the channel */ |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 669 | ret = vmbus_open(device->channel, |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 670 | INPUTVSC_SEND_RING_BUFFER_SIZE, |
| 671 | INPUTVSC_RECV_RING_BUFFER_SIZE, |
| 672 | NULL, |
| 673 | 0, |
Hank Janssen | 94e44cb | 2011-04-01 14:32:10 -0700 | [diff] [blame] | 674 | mousevsc_on_channel_callback, |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 675 | device |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 676 | ); |
| 677 | |
| 678 | if (ret != 0) { |
| 679 | pr_err("unable to open channel: %d", ret); |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 680 | free_input_device(input_dev); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 681 | return -1; |
| 682 | } |
| 683 | |
| 684 | pr_info("InputVsc channel open: %d", ret); |
| 685 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 686 | ret = mousevsc_connect_to_vsp(device); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 687 | |
| 688 | if (ret != 0) { |
| 689 | pr_err("unable to connect channel: %d", ret); |
| 690 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 691 | vmbus_close(device->channel); |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 692 | free_input_device(input_dev); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 693 | return ret; |
| 694 | } |
| 695 | |
K. Y. Srinivasan | 746e8ca | 2011-05-10 07:56:16 -0700 | [diff] [blame] | 696 | input_drv = drv_to_hv_drv(input_dev->device->device.driver); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 697 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 698 | dev_info.vendor = input_dev->hid_dev_info.vendor; |
| 699 | dev_info.product = input_dev->hid_dev_info.product; |
| 700 | dev_info.version = input_dev->hid_dev_info.version; |
Greg Kroah-Hartman | 98ad91e | 2011-03-02 19:24:05 -0800 | [diff] [blame] | 701 | strcpy(dev_info.name, "Microsoft Vmbus HID-compliant Mouse"); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 702 | |
| 703 | /* Send the device info back up */ |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 704 | deviceinfo_callback(device, &dev_info); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 705 | |
| 706 | /* Send the report desc back up */ |
| 707 | /* workaround SA-167 */ |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 708 | if (input_dev->report_desc[14] == 0x25) |
| 709 | input_dev->report_desc[14] = 0x29; |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 710 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 711 | reportdesc_callback(device, input_dev->report_desc, |
| 712 | input_dev->report_desc_size); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 713 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 714 | input_dev->init_complete = true; |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 715 | |
| 716 | Cleanup: |
| 717 | return ret; |
| 718 | } |
| 719 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 720 | static int mousevsc_on_device_remove(struct hv_device *device) |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 721 | { |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 722 | struct mousevsc_dev *input_dev; |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 723 | int ret = 0; |
| 724 | |
| 725 | pr_info("disabling input device (%p)...", |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 726 | device->ext); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 727 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 728 | input_dev = release_input_device(device); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 729 | |
| 730 | |
| 731 | /* |
| 732 | * At this point, all outbound traffic should be disable. We only |
| 733 | * allow inbound traffic (responses) to proceed |
| 734 | * |
| 735 | * so that outstanding requests can be completed. |
| 736 | */ |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 737 | while (input_dev->num_outstanding_req) { |
Hank Janssen | ac41d40 | 2011-04-01 14:32:13 -0700 | [diff] [blame] | 738 | pr_info("waiting for %d requests to complete...", |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 739 | input_dev->num_outstanding_req); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 740 | |
| 741 | udelay(100); |
| 742 | } |
| 743 | |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 744 | pr_info("removing input device (%p)...", device->ext); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 745 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 746 | input_dev = final_release_input_device(device); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 747 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 748 | pr_info("input device (%p) safe to remove", input_dev); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 749 | |
| 750 | /* Close the channel */ |
Hank Janssen | 2ba6810 | 2011-04-01 14:32:11 -0700 | [diff] [blame] | 751 | vmbus_close(device->channel); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 752 | |
Hank Janssen | c0765e9 | 2011-04-01 14:32:14 -0700 | [diff] [blame] | 753 | free_input_device(input_dev); |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 754 | |
| 755 | return ret; |
| 756 | } |
| 757 | |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 758 | |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 759 | /* |
| 760 | * Data types |
| 761 | */ |
| 762 | struct input_device_context { |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 763 | struct hv_device *device_ctx; |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 764 | struct hid_device *hid_device; |
Greg Kroah-Hartman | 0f88ea5 | 2011-03-02 18:57:04 -0800 | [diff] [blame] | 765 | struct hv_input_dev_info device_info; |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 766 | int connected; |
| 767 | }; |
| 768 | |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 769 | |
Greg Kroah-Hartman | 0f88ea5 | 2011-03-02 18:57:04 -0800 | [diff] [blame] | 770 | static void deviceinfo_callback(struct hv_device *dev, struct hv_input_dev_info *info) |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 771 | { |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 772 | struct input_device_context *input_device_ctx = |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 773 | dev_get_drvdata(&dev->device); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 774 | |
| 775 | memcpy(&input_device_ctx->device_info, info, |
Greg Kroah-Hartman | 0f88ea5 | 2011-03-02 18:57:04 -0800 | [diff] [blame] | 776 | sizeof(struct hv_input_dev_info)); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 777 | |
Greg Kroah-Hartman | 4f14313 | 2011-03-02 18:38:31 -0800 | [diff] [blame] | 778 | DPRINT_INFO(INPUTVSC_DRV, "%s", __func__); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 779 | } |
| 780 | |
Greg Kroah-Hartman | 4f14313 | 2011-03-02 18:38:31 -0800 | [diff] [blame] | 781 | static void inputreport_callback(struct hv_device *dev, void *packet, u32 len) |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 782 | { |
| 783 | int ret = 0; |
| 784 | |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 785 | struct input_device_context *input_dev_ctx = |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 786 | dev_get_drvdata(&dev->device); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 787 | |
| 788 | ret = hid_input_report(input_dev_ctx->hid_device, |
| 789 | HID_INPUT_REPORT, packet, len, 1); |
| 790 | |
| 791 | DPRINT_DBG(INPUTVSC_DRV, "hid_input_report (ret %d)", ret); |
| 792 | } |
| 793 | |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 794 | static int mousevsc_hid_open(struct hid_device *hid) |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 795 | { |
| 796 | return 0; |
| 797 | } |
| 798 | |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 799 | static void mousevsc_hid_close(struct hid_device *hid) |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 800 | { |
| 801 | } |
| 802 | |
K. Y. Srinivasan | 9efd21e | 2011-04-29 13:45:10 -0700 | [diff] [blame] | 803 | static int mousevsc_probe(struct hv_device *dev) |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 804 | { |
| 805 | int ret = 0; |
| 806 | |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 807 | struct input_device_context *input_dev_ctx; |
| 808 | |
| 809 | input_dev_ctx = kmalloc(sizeof(struct input_device_context), |
| 810 | GFP_KERNEL); |
| 811 | |
K. Y. Srinivasan | 9efd21e | 2011-04-29 13:45:10 -0700 | [diff] [blame] | 812 | dev_set_drvdata(&dev->device, input_dev_ctx); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 813 | |
| 814 | /* Call to the vsc driver to add the device */ |
K. Y. Srinivasan | d1f01b3 | 2011-05-10 07:55:06 -0700 | [diff] [blame] | 815 | ret = mousevsc_on_device_add(dev, NULL); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 816 | |
| 817 | if (ret != 0) { |
| 818 | DPRINT_ERR(INPUTVSC_DRV, "unable to add input vsc device"); |
| 819 | |
| 820 | return -1; |
| 821 | } |
| 822 | |
| 823 | return 0; |
| 824 | } |
| 825 | |
K. Y. Srinivasan | 415b023 | 2011-04-29 13:45:12 -0700 | [diff] [blame] | 826 | static int mousevsc_remove(struct hv_device *dev) |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 827 | { |
| 828 | int ret = 0; |
| 829 | |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 830 | struct input_device_context *input_dev_ctx; |
| 831 | |
| 832 | input_dev_ctx = kmalloc(sizeof(struct input_device_context), |
| 833 | GFP_KERNEL); |
| 834 | |
K. Y. Srinivasan | 415b023 | 2011-04-29 13:45:12 -0700 | [diff] [blame] | 835 | dev_set_drvdata(&dev->device, input_dev_ctx); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 836 | |
| 837 | if (input_dev_ctx->connected) { |
| 838 | hidinput_disconnect(input_dev_ctx->hid_device); |
| 839 | input_dev_ctx->connected = 0; |
| 840 | } |
| 841 | |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 842 | /* |
| 843 | * Call to the vsc driver to let it know that the device |
| 844 | * is being removed |
| 845 | */ |
K. Y. Srinivasan | f1f66f8 | 2011-05-10 07:55:07 -0700 | [diff] [blame] | 846 | ret = mousevsc_on_device_remove(dev); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 847 | |
| 848 | if (ret != 0) { |
| 849 | DPRINT_ERR(INPUTVSC_DRV, |
| 850 | "unable to remove vsc device (ret %d)", ret); |
| 851 | } |
| 852 | |
| 853 | kfree(input_dev_ctx); |
| 854 | |
| 855 | return ret; |
| 856 | } |
| 857 | |
Greg Kroah-Hartman | 4f14313 | 2011-03-02 18:38:31 -0800 | [diff] [blame] | 858 | static void reportdesc_callback(struct hv_device *dev, void *packet, u32 len) |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 859 | { |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 860 | struct input_device_context *input_device_ctx = |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 861 | dev_get_drvdata(&dev->device); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 862 | struct hid_device *hid_dev; |
| 863 | |
| 864 | /* hid_debug = -1; */ |
| 865 | hid_dev = kmalloc(sizeof(struct hid_device), GFP_KERNEL); |
| 866 | |
| 867 | if (hid_parse_report(hid_dev, packet, len)) { |
| 868 | DPRINT_INFO(INPUTVSC_DRV, "Unable to call hd_parse_report"); |
| 869 | return; |
| 870 | } |
| 871 | |
| 872 | if (hid_dev) { |
| 873 | DPRINT_INFO(INPUTVSC_DRV, "hid_device created"); |
| 874 | |
| 875 | hid_dev->ll_driver->open = mousevsc_hid_open; |
| 876 | hid_dev->ll_driver->close = mousevsc_hid_close; |
| 877 | |
Greg Kroah-Hartman | c9246c9 | 2011-03-02 18:58:35 -0800 | [diff] [blame] | 878 | hid_dev->bus = BUS_VIRTUAL; |
Greg Kroah-Hartman | 0f88ea5 | 2011-03-02 18:57:04 -0800 | [diff] [blame] | 879 | hid_dev->vendor = input_device_ctx->device_info.vendor; |
| 880 | hid_dev->product = input_device_ctx->device_info.product; |
| 881 | hid_dev->version = input_device_ctx->device_info.version; |
K. Y. Srinivasan | 6bad88d | 2011-03-07 13:35:48 -0800 | [diff] [blame] | 882 | hid_dev->dev = dev->device; |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 883 | |
| 884 | sprintf(hid_dev->name, "%s", |
Greg Kroah-Hartman | 0f88ea5 | 2011-03-02 18:57:04 -0800 | [diff] [blame] | 885 | input_device_ctx->device_info.name); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 886 | |
| 887 | /* |
| 888 | * HJ Do we want to call it with a 0 |
| 889 | */ |
| 890 | if (!hidinput_connect(hid_dev, 0)) { |
| 891 | hid_dev->claimed |= HID_CLAIMED_INPUT; |
| 892 | |
| 893 | input_device_ctx->connected = 1; |
| 894 | |
| 895 | DPRINT_INFO(INPUTVSC_DRV, |
| 896 | "HID device claimed by input\n"); |
| 897 | } |
| 898 | |
| 899 | if (!hid_dev->claimed) { |
| 900 | DPRINT_ERR(INPUTVSC_DRV, |
| 901 | "HID device not claimed by " |
| 902 | "input or hiddev\n"); |
| 903 | } |
| 904 | |
| 905 | input_device_ctx->hid_device = hid_dev; |
| 906 | } |
| 907 | |
| 908 | kfree(hid_dev); |
| 909 | } |
| 910 | |
K. Y. Srinivasan | 1ec91eb | 2011-08-25 09:48:35 -0700 | [diff] [blame] | 911 | static const struct hv_vmbus_device_id id_table[] = { |
Greg Kroah-Hartman | c45cf2d | 2011-08-25 11:41:33 -0700 | [diff] [blame^] | 912 | /* Mouse guid */ |
| 913 | { VMBUS_DEVICE(0x9E, 0xB6, 0xA8, 0xCF, 0x4A, 0x5B, 0xc0, 0x4c, |
| 914 | 0xB9, 0x8B, 0x8B, 0xA1, 0xA1, 0xF3, 0xF9, 0x5A) }, |
| 915 | { }, |
K. Y. Srinivasan | 1ec91eb | 2011-08-25 09:48:35 -0700 | [diff] [blame] | 916 | }; |
| 917 | |
| 918 | /* |
| 919 | * The mouse driver is not functional; do not auto-load it. |
| 920 | */ |
| 921 | /* MODULE_DEVICE_TABLE(vmbus, id_table); */ |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 922 | |
K. Y. Srinivasan | 746e8ca | 2011-05-10 07:56:16 -0700 | [diff] [blame] | 923 | static struct hv_driver mousevsc_drv = { |
K. Y. Srinivasan | 1ec91eb | 2011-08-25 09:48:35 -0700 | [diff] [blame] | 924 | .id_table = id_table, |
K. Y. Srinivasan | 746e8ca | 2011-05-10 07:56:16 -0700 | [diff] [blame] | 925 | .probe = mousevsc_probe, |
| 926 | .remove = mousevsc_remove, |
K. Y. Srinivasan | 1745ec5 | 2011-05-10 07:55:20 -0700 | [diff] [blame] | 927 | }; |
K. Y. Srinivasan | eebdd6f | 2011-05-10 07:55:19 -0700 | [diff] [blame] | 928 | |
Greg Kroah-Hartman | ac2c903 | 2011-03-02 18:50:15 -0800 | [diff] [blame] | 929 | static void mousevsc_drv_exit(void) |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 930 | { |
K. Y. Srinivasan | 96053ef | 2011-05-12 19:34:46 -0700 | [diff] [blame] | 931 | vmbus_child_driver_unregister(&mousevsc_drv.driver); |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 932 | } |
| 933 | |
| 934 | static int __init mousevsc_init(void) |
| 935 | { |
K. Y. Srinivasan | 746e8ca | 2011-05-10 07:56:16 -0700 | [diff] [blame] | 936 | struct hv_driver *drv = &mousevsc_drv; |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 937 | |
| 938 | DPRINT_INFO(INPUTVSC_DRV, "Hyper-V Mouse driver initializing."); |
| 939 | |
K. Y. Srinivasan | eb94b2f | 2011-05-10 07:56:12 -0700 | [diff] [blame] | 940 | drv->driver.name = driver_name; |
Greg Kroah-Hartman | 7ced481 | 2011-03-02 18:28:52 -0800 | [diff] [blame] | 941 | |
Greg Kroah-Hartman | 7ced481 | 2011-03-02 18:28:52 -0800 | [diff] [blame] | 942 | /* The driver belongs to vmbus */ |
K. Y. Srinivasan | 150f939 | 2011-03-07 13:32:31 -0800 | [diff] [blame] | 943 | vmbus_child_driver_register(&drv->driver); |
Greg Kroah-Hartman | 7ced481 | 2011-03-02 18:28:52 -0800 | [diff] [blame] | 944 | |
| 945 | return 0; |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 946 | } |
| 947 | |
| 948 | static void __exit mousevsc_exit(void) |
| 949 | { |
| 950 | mousevsc_drv_exit(); |
| 951 | } |
| 952 | |
| 953 | /* |
Greg Kroah-Hartman | 76e6366 | 2011-03-02 20:15:14 -0500 | [diff] [blame] | 954 | * We don't want to automatically load this driver just yet, it's quite |
| 955 | * broken. It's safe if you want to load it yourself manually, but |
| 956 | * don't inflict it on unsuspecting users, that's just mean. |
| 957 | */ |
| 958 | #if 0 |
| 959 | |
| 960 | /* |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 961 | * We use a PCI table to determine if we should autoload this driver This is |
| 962 | * needed by distro tools to determine if the hyperv drivers should be |
| 963 | * installed and/or configured. We don't do anything else with the table, but |
| 964 | * it needs to be present. |
| 965 | */ |
Ruslan Pisarev | dbbb249 | 2011-07-22 15:12:47 +0300 | [diff] [blame] | 966 | static const struct pci_device_id microsoft_hv_pci_table[] = { |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 967 | { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */ |
| 968 | { 0 } |
| 969 | }; |
| 970 | MODULE_DEVICE_TABLE(pci, microsoft_hv_pci_table); |
Greg Kroah-Hartman | 76e6366 | 2011-03-02 20:15:14 -0500 | [diff] [blame] | 971 | #endif |
Greg Kroah-Hartman | 0c3a6ed | 2011-02-27 07:43:10 -0800 | [diff] [blame] | 972 | |
| 973 | MODULE_LICENSE("GPL"); |
| 974 | MODULE_VERSION(HV_DRV_VERSION); |
| 975 | module_init(mousevsc_init); |
| 976 | module_exit(mousevsc_exit); |
| 977 | |