Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Char device for device raw access |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 3 | * |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 4 | * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net> |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software Foundation, |
| 18 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/kernel.h> |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 23 | #include <linux/kref.h> |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 24 | #include <linux/wait.h> |
| 25 | #include <linux/errno.h> |
| 26 | #include <linux/device.h> |
| 27 | #include <linux/vmalloc.h> |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 28 | #include <linux/mutex.h> |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 29 | #include <linux/poll.h> |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 30 | #include <linux/preempt.h> |
| 31 | #include <linux/time.h> |
Jay Fenlason | cf417e54 | 2008-10-03 11:19:09 -0400 | [diff] [blame] | 32 | #include <linux/spinlock.h> |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 33 | #include <linux/delay.h> |
| 34 | #include <linux/mm.h> |
Kristian Høgsberg | a3aca3d | 2007-03-07 12:12:44 -0500 | [diff] [blame] | 35 | #include <linux/idr.h> |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 36 | #include <linux/compat.h> |
Kristian Høgsberg | 9640d3d | 2007-04-30 15:03:15 -0400 | [diff] [blame] | 37 | #include <linux/firewire-cdev.h> |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 38 | #include <asm/system.h> |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 39 | #include <asm/uaccess.h> |
| 40 | #include "fw-transaction.h" |
| 41 | #include "fw-topology.h" |
| 42 | #include "fw-device.h" |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 43 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 44 | struct client { |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 45 | u32 version; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 46 | struct fw_device *device; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 47 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 48 | spinlock_t lock; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 49 | bool in_shutdown; |
| 50 | struct idr resource_idr; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 51 | struct list_head event_list; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 52 | wait_queue_head_t wait; |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 53 | u64 bus_reset_closure; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 54 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 55 | struct fw_iso_context *iso_context; |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 56 | u64 iso_closure; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 57 | struct fw_iso_buffer buffer; |
| 58 | unsigned long vm_start; |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 59 | |
| 60 | struct list_head link; |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 61 | struct kref kref; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 62 | }; |
| 63 | |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 64 | static inline void client_get(struct client *client) |
| 65 | { |
| 66 | kref_get(&client->kref); |
| 67 | } |
| 68 | |
| 69 | static void client_release(struct kref *kref) |
| 70 | { |
| 71 | struct client *client = container_of(kref, struct client, kref); |
| 72 | |
| 73 | fw_device_put(client->device); |
| 74 | kfree(client); |
| 75 | } |
| 76 | |
| 77 | static void client_put(struct client *client) |
| 78 | { |
| 79 | kref_put(&client->kref, client_release); |
| 80 | } |
| 81 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 82 | struct client_resource; |
| 83 | typedef void (*client_resource_release_fn_t)(struct client *, |
| 84 | struct client_resource *); |
| 85 | struct client_resource { |
| 86 | client_resource_release_fn_t release; |
| 87 | int handle; |
| 88 | }; |
| 89 | |
| 90 | struct address_handler_resource { |
| 91 | struct client_resource resource; |
| 92 | struct fw_address_handler handler; |
| 93 | __u64 closure; |
| 94 | struct client *client; |
| 95 | }; |
| 96 | |
| 97 | struct outbound_transaction_resource { |
| 98 | struct client_resource resource; |
| 99 | struct fw_transaction transaction; |
| 100 | }; |
| 101 | |
| 102 | struct inbound_transaction_resource { |
| 103 | struct client_resource resource; |
| 104 | struct fw_request *request; |
| 105 | void *data; |
| 106 | size_t length; |
| 107 | }; |
| 108 | |
| 109 | struct descriptor_resource { |
| 110 | struct client_resource resource; |
| 111 | struct fw_descriptor descriptor; |
| 112 | u32 data[0]; |
| 113 | }; |
| 114 | |
| 115 | /* |
| 116 | * dequeue_event() just kfree()'s the event, so the event has to be |
| 117 | * the first field in a struct XYZ_event. |
| 118 | */ |
| 119 | struct event { |
| 120 | struct { void *data; size_t size; } v[2]; |
| 121 | struct list_head link; |
| 122 | }; |
| 123 | |
| 124 | struct bus_reset_event { |
| 125 | struct event event; |
| 126 | struct fw_cdev_event_bus_reset reset; |
| 127 | }; |
| 128 | |
| 129 | struct outbound_transaction_event { |
| 130 | struct event event; |
| 131 | struct client *client; |
| 132 | struct outbound_transaction_resource r; |
| 133 | struct fw_cdev_event_response response; |
| 134 | }; |
| 135 | |
| 136 | struct inbound_transaction_event { |
| 137 | struct event event; |
| 138 | struct fw_cdev_event_request request; |
| 139 | }; |
| 140 | |
| 141 | struct iso_interrupt_event { |
| 142 | struct event event; |
| 143 | struct fw_cdev_event_iso_interrupt interrupt; |
| 144 | }; |
| 145 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 146 | static inline void __user *u64_to_uptr(__u64 value) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 147 | { |
| 148 | return (void __user *)(unsigned long)value; |
| 149 | } |
| 150 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 151 | static inline __u64 uptr_to_u64(void __user *ptr) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 152 | { |
| 153 | return (__u64)(unsigned long)ptr; |
| 154 | } |
| 155 | |
| 156 | static int fw_device_op_open(struct inode *inode, struct file *file) |
| 157 | { |
| 158 | struct fw_device *device; |
| 159 | struct client *client; |
| 160 | |
Stefan Richter | 96b1906 | 2008-02-02 15:01:09 +0100 | [diff] [blame] | 161 | device = fw_device_get_by_devt(inode->i_rdev); |
Kristian Høgsberg | a3aca3d | 2007-03-07 12:12:44 -0500 | [diff] [blame] | 162 | if (device == NULL) |
| 163 | return -ENODEV; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 164 | |
Jay Fenlason | 551f4cb | 2008-05-16 11:15:23 -0400 | [diff] [blame] | 165 | if (fw_device_is_shutdown(device)) { |
| 166 | fw_device_put(device); |
| 167 | return -ENODEV; |
| 168 | } |
| 169 | |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 170 | client = kzalloc(sizeof(*client), GFP_KERNEL); |
Stefan Richter | 96b1906 | 2008-02-02 15:01:09 +0100 | [diff] [blame] | 171 | if (client == NULL) { |
| 172 | fw_device_put(device); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 173 | return -ENOMEM; |
Stefan Richter | 96b1906 | 2008-02-02 15:01:09 +0100 | [diff] [blame] | 174 | } |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 175 | |
Stefan Richter | 96b1906 | 2008-02-02 15:01:09 +0100 | [diff] [blame] | 176 | client->device = device; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 177 | spin_lock_init(&client->lock); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 178 | idr_init(&client->resource_idr); |
| 179 | INIT_LIST_HEAD(&client->event_list); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 180 | init_waitqueue_head(&client->wait); |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 181 | kref_init(&client->kref); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 182 | |
| 183 | file->private_data = client; |
| 184 | |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 185 | mutex_lock(&device->client_list_mutex); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 186 | list_add_tail(&client->link, &device->client_list); |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 187 | mutex_unlock(&device->client_list_mutex); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 188 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static void queue_event(struct client *client, struct event *event, |
| 193 | void *data0, size_t size0, void *data1, size_t size1) |
| 194 | { |
| 195 | unsigned long flags; |
| 196 | |
| 197 | event->v[0].data = data0; |
| 198 | event->v[0].size = size0; |
| 199 | event->v[1].data = data1; |
| 200 | event->v[1].size = size1; |
| 201 | |
| 202 | spin_lock_irqsave(&client->lock, flags); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 203 | if (client->in_shutdown) |
| 204 | kfree(event); |
| 205 | else |
| 206 | list_add_tail(&event->link, &client->event_list); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 207 | spin_unlock_irqrestore(&client->lock, flags); |
Jay Fenlason | 83431cb | 2007-10-08 17:00:29 -0400 | [diff] [blame] | 208 | |
| 209 | wake_up_interruptible(&client->wait); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 210 | } |
| 211 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 212 | static int dequeue_event(struct client *client, |
| 213 | char __user *buffer, size_t count) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 214 | { |
| 215 | unsigned long flags; |
| 216 | struct event *event; |
| 217 | size_t size, total; |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 218 | int i, ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 219 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 220 | ret = wait_event_interruptible(client->wait, |
| 221 | !list_empty(&client->event_list) || |
| 222 | fw_device_is_shutdown(client->device)); |
| 223 | if (ret < 0) |
| 224 | return ret; |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 225 | |
| 226 | if (list_empty(&client->event_list) && |
| 227 | fw_device_is_shutdown(client->device)) |
| 228 | return -ENODEV; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 229 | |
| 230 | spin_lock_irqsave(&client->lock, flags); |
Stefan Richter | a459b8a | 2008-12-21 16:49:57 +0100 | [diff] [blame] | 231 | event = list_first_entry(&client->event_list, struct event, link); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 232 | list_del(&event->link); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 233 | spin_unlock_irqrestore(&client->lock, flags); |
| 234 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 235 | total = 0; |
| 236 | for (i = 0; i < ARRAY_SIZE(event->v) && total < count; i++) { |
| 237 | size = min(event->v[i].size, count - total); |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 238 | if (copy_to_user(buffer + total, event->v[i].data, size)) { |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 239 | ret = -EFAULT; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 240 | goto out; |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 241 | } |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 242 | total += size; |
| 243 | } |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 244 | ret = total; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 245 | |
| 246 | out: |
| 247 | kfree(event); |
| 248 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 249 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 250 | } |
| 251 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 252 | static ssize_t fw_device_op_read(struct file *file, char __user *buffer, |
| 253 | size_t count, loff_t *offset) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 254 | { |
| 255 | struct client *client = file->private_data; |
| 256 | |
| 257 | return dequeue_event(client, buffer, count); |
| 258 | } |
| 259 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 260 | static void fill_bus_reset_event(struct fw_cdev_event_bus_reset *event, |
| 261 | struct client *client) |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 262 | { |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 263 | struct fw_card *card = client->device->card; |
Jay Fenlason | cf417e54 | 2008-10-03 11:19:09 -0400 | [diff] [blame] | 264 | unsigned long flags; |
| 265 | |
| 266 | spin_lock_irqsave(&card->lock, flags); |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 267 | |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 268 | event->closure = client->bus_reset_closure; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 269 | event->type = FW_CDEV_EVENT_BUS_RESET; |
Stefan Richter | cf5a56a | 2008-01-24 01:53:51 +0100 | [diff] [blame] | 270 | event->generation = client->device->generation; |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 271 | event->node_id = client->device->node_id; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 272 | event->local_node_id = card->local_node->node_id; |
| 273 | event->bm_node_id = 0; /* FIXME: We don't track the BM. */ |
| 274 | event->irm_node_id = card->irm_node->node_id; |
| 275 | event->root_node_id = card->root_node->node_id; |
Jay Fenlason | cf417e54 | 2008-10-03 11:19:09 -0400 | [diff] [blame] | 276 | |
| 277 | spin_unlock_irqrestore(&card->lock, flags); |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 278 | } |
| 279 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 280 | static void for_each_client(struct fw_device *device, |
| 281 | void (*callback)(struct client *client)) |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 282 | { |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 283 | struct client *c; |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 284 | |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 285 | mutex_lock(&device->client_list_mutex); |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 286 | list_for_each_entry(c, &device->client_list, link) |
| 287 | callback(c); |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 288 | mutex_unlock(&device->client_list_mutex); |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 289 | } |
| 290 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 291 | static void queue_bus_reset_event(struct client *client) |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 292 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 293 | struct bus_reset_event *e; |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 294 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 295 | e = kzalloc(sizeof(*e), GFP_KERNEL); |
| 296 | if (e == NULL) { |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 297 | fw_notify("Out of memory when allocating bus reset event\n"); |
| 298 | return; |
| 299 | } |
| 300 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 301 | fill_bus_reset_event(&e->reset, client); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 302 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 303 | queue_event(client, &e->event, |
| 304 | &e->reset, sizeof(e->reset), NULL, 0); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | void fw_device_cdev_update(struct fw_device *device) |
| 308 | { |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 309 | for_each_client(device, queue_bus_reset_event); |
| 310 | } |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 311 | |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 312 | static void wake_up_client(struct client *client) |
| 313 | { |
| 314 | wake_up_interruptible(&client->wait); |
| 315 | } |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 316 | |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 317 | void fw_device_cdev_remove(struct fw_device *device) |
| 318 | { |
| 319 | for_each_client(device, wake_up_client); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 320 | } |
| 321 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 322 | static int ioctl_get_info(struct client *client, void *buffer) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 323 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 324 | struct fw_cdev_get_info *get_info = buffer; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 325 | struct fw_cdev_event_bus_reset bus_reset; |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 326 | unsigned long ret = 0; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 327 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 328 | client->version = get_info->version; |
| 329 | get_info->version = FW_CDEV_VERSION; |
Jay Fenlason | cf417e54 | 2008-10-03 11:19:09 -0400 | [diff] [blame] | 330 | get_info->card = client->device->card->index; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 331 | |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 332 | down_read(&fw_device_rwsem); |
| 333 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 334 | if (get_info->rom != 0) { |
| 335 | void __user *uptr = u64_to_uptr(get_info->rom); |
| 336 | size_t want = get_info->rom_length; |
Stefan Richter | d84702a | 2007-03-20 19:42:15 +0100 | [diff] [blame] | 337 | size_t have = client->device->config_rom_length * 4; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 338 | |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 339 | ret = copy_to_user(uptr, client->device->config_rom, |
| 340 | min(want, have)); |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 341 | } |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 342 | get_info->rom_length = client->device->config_rom_length * 4; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 343 | |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 344 | up_read(&fw_device_rwsem); |
| 345 | |
| 346 | if (ret != 0) |
| 347 | return -EFAULT; |
| 348 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 349 | client->bus_reset_closure = get_info->bus_reset_closure; |
| 350 | if (get_info->bus_reset != 0) { |
| 351 | void __user *uptr = u64_to_uptr(get_info->bus_reset); |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 352 | |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 353 | fill_bus_reset_event(&bus_reset, client); |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 354 | if (copy_to_user(uptr, &bus_reset, sizeof(bus_reset))) |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 355 | return -EFAULT; |
| 356 | } |
| 357 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 358 | return 0; |
| 359 | } |
| 360 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 361 | static int add_client_resource(struct client *client, |
| 362 | struct client_resource *resource, gfp_t gfp_mask) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 363 | { |
| 364 | unsigned long flags; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 365 | int ret; |
| 366 | |
| 367 | retry: |
| 368 | if (idr_pre_get(&client->resource_idr, gfp_mask) == 0) |
| 369 | return -ENOMEM; |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 370 | |
| 371 | spin_lock_irqsave(&client->lock, flags); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 372 | if (client->in_shutdown) |
| 373 | ret = -ECANCELED; |
| 374 | else |
| 375 | ret = idr_get_new(&client->resource_idr, resource, |
| 376 | &resource->handle); |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 377 | if (ret >= 0) |
| 378 | client_get(client); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 379 | spin_unlock_irqrestore(&client->lock, flags); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 380 | |
| 381 | if (ret == -EAGAIN) |
| 382 | goto retry; |
| 383 | |
| 384 | return ret < 0 ? ret : 0; |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 385 | } |
| 386 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 387 | static int release_client_resource(struct client *client, u32 handle, |
| 388 | client_resource_release_fn_t release, |
| 389 | struct client_resource **resource) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 390 | { |
| 391 | struct client_resource *r; |
| 392 | unsigned long flags; |
| 393 | |
| 394 | spin_lock_irqsave(&client->lock, flags); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 395 | if (client->in_shutdown) |
| 396 | r = NULL; |
| 397 | else |
| 398 | r = idr_find(&client->resource_idr, handle); |
| 399 | if (r && r->release == release) |
| 400 | idr_remove(&client->resource_idr, handle); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 401 | spin_unlock_irqrestore(&client->lock, flags); |
| 402 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 403 | if (!(r && r->release == release)) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 404 | return -EINVAL; |
| 405 | |
| 406 | if (resource) |
| 407 | *resource = r; |
| 408 | else |
| 409 | r->release(client, r); |
| 410 | |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 411 | client_put(client); |
| 412 | |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 413 | return 0; |
| 414 | } |
| 415 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 416 | static void release_transaction(struct client *client, |
| 417 | struct client_resource *resource) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 418 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 419 | struct outbound_transaction_resource *r = container_of(resource, |
| 420 | struct outbound_transaction_resource, resource); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 421 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 422 | fw_cancel_transaction(client->device->card, &r->transaction); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 423 | } |
| 424 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 425 | static void complete_transaction(struct fw_card *card, int rcode, |
| 426 | void *payload, size_t length, void *data) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 427 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 428 | struct outbound_transaction_event *e = data; |
| 429 | struct fw_cdev_event_response *rsp = &e->response; |
| 430 | struct client *client = e->client; |
Kristian Høgsberg | 28cf6a0 | 2007-03-07 12:12:50 -0500 | [diff] [blame] | 431 | unsigned long flags; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 432 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 433 | if (length < rsp->length) |
| 434 | rsp->length = length; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 435 | if (rcode == RCODE_COMPLETE) |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 436 | memcpy(rsp->data, payload, rsp->length); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 437 | |
Kristian Høgsberg | 28cf6a0 | 2007-03-07 12:12:50 -0500 | [diff] [blame] | 438 | spin_lock_irqsave(&client->lock, flags); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 439 | /* |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 440 | * 1. If called while in shutdown, the idr tree must be left untouched. |
| 441 | * The idr handle will be removed and the client reference will be |
| 442 | * dropped later. |
| 443 | * 2. If the call chain was release_client_resource -> |
| 444 | * release_transaction -> complete_transaction (instead of a normal |
| 445 | * conclusion of the transaction), i.e. if this resource was already |
| 446 | * unregistered from the idr, the client reference will be dropped |
| 447 | * by release_client_resource and we must not drop it here. |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 448 | */ |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 449 | if (!client->in_shutdown && |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 450 | idr_find(&client->resource_idr, e->r.resource.handle)) { |
| 451 | idr_remove(&client->resource_idr, e->r.resource.handle); |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 452 | /* Drop the idr's reference */ |
| 453 | client_put(client); |
| 454 | } |
Kristian Høgsberg | 28cf6a0 | 2007-03-07 12:12:50 -0500 | [diff] [blame] | 455 | spin_unlock_irqrestore(&client->lock, flags); |
| 456 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 457 | rsp->type = FW_CDEV_EVENT_RESPONSE; |
| 458 | rsp->rcode = rcode; |
David Moore | 8401d92 | 2008-07-29 23:46:25 -0700 | [diff] [blame] | 459 | |
| 460 | /* |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 461 | * In the case that sizeof(*rsp) doesn't align with the position of the |
David Moore | 8401d92 | 2008-07-29 23:46:25 -0700 | [diff] [blame] | 462 | * data, and the read is short, preserve an extra copy of the data |
| 463 | * to stay compatible with a pre-2.6.27 bug. Since the bug is harmless |
| 464 | * for short reads and some apps depended on it, this is both safe |
| 465 | * and prudent for compatibility. |
| 466 | */ |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 467 | if (rsp->length <= sizeof(*rsp) - offsetof(typeof(*rsp), data)) |
| 468 | queue_event(client, &e->event, rsp, sizeof(*rsp), |
| 469 | rsp->data, rsp->length); |
David Moore | 8401d92 | 2008-07-29 23:46:25 -0700 | [diff] [blame] | 470 | else |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 471 | queue_event(client, &e->event, rsp, sizeof(*rsp) + rsp->length, |
David Moore | 8401d92 | 2008-07-29 23:46:25 -0700 | [diff] [blame] | 472 | NULL, 0); |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 473 | |
| 474 | /* Drop the transaction callback's reference */ |
| 475 | client_put(client); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 476 | } |
| 477 | |
Jeff Garzik | 350958f | 2007-05-27 07:09:18 -0400 | [diff] [blame] | 478 | static int ioctl_send_request(struct client *client, void *buffer) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 479 | { |
| 480 | struct fw_device *device = client->device; |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 481 | struct fw_cdev_send_request *request = buffer; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 482 | struct outbound_transaction_event *e; |
Stefan Richter | 1f3125a | 2008-12-05 22:44:42 +0100 | [diff] [blame] | 483 | int ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 484 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 485 | /* What is the biggest size we'll accept, really? */ |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 486 | if (request->length > 4096) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 487 | return -EINVAL; |
| 488 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 489 | e = kmalloc(sizeof(*e) + request->length, GFP_KERNEL); |
| 490 | if (e == NULL) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 491 | return -ENOMEM; |
| 492 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 493 | e->client = client; |
| 494 | e->response.length = request->length; |
| 495 | e->response.closure = request->closure; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 496 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 497 | if (request->data && |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 498 | copy_from_user(e->response.data, |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 499 | u64_to_uptr(request->data), request->length)) { |
Stefan Richter | 1f3125a | 2008-12-05 22:44:42 +0100 | [diff] [blame] | 500 | ret = -EFAULT; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 501 | goto failed; |
Stefan Richter | 1f3125a | 2008-12-05 22:44:42 +0100 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | switch (request->tcode) { |
| 505 | case TCODE_WRITE_QUADLET_REQUEST: |
| 506 | case TCODE_WRITE_BLOCK_REQUEST: |
| 507 | case TCODE_READ_QUADLET_REQUEST: |
| 508 | case TCODE_READ_BLOCK_REQUEST: |
| 509 | case TCODE_LOCK_MASK_SWAP: |
| 510 | case TCODE_LOCK_COMPARE_SWAP: |
| 511 | case TCODE_LOCK_FETCH_ADD: |
| 512 | case TCODE_LOCK_LITTLE_ADD: |
| 513 | case TCODE_LOCK_BOUNDED_ADD: |
| 514 | case TCODE_LOCK_WRAP_ADD: |
| 515 | case TCODE_LOCK_VENDOR_DEPENDENT: |
| 516 | break; |
| 517 | default: |
| 518 | ret = -EINVAL; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 519 | goto failed; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 520 | } |
| 521 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 522 | e->r.resource.release = release_transaction; |
| 523 | ret = add_client_resource(client, &e->r.resource, GFP_KERNEL); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 524 | if (ret < 0) |
| 525 | goto failed; |
Kristian Høgsberg | 28cf6a0 | 2007-03-07 12:12:50 -0500 | [diff] [blame] | 526 | |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 527 | /* Get a reference for the transaction callback */ |
| 528 | client_get(client); |
| 529 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 530 | fw_send_request(device->card, &e->r.transaction, |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 531 | request->tcode & 0x1f, |
Stefan Richter | 907293d | 2007-01-23 21:11:43 +0100 | [diff] [blame] | 532 | device->node->node_id, |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 533 | request->generation, |
Stefan Richter | f139749 | 2007-06-10 21:31:36 +0200 | [diff] [blame] | 534 | device->max_speed, |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 535 | request->offset, |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 536 | e->response.data, request->length, |
| 537 | complete_transaction, e); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 538 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 539 | if (request->data) |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 540 | return sizeof(request) + request->length; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 541 | else |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 542 | return sizeof(request); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 543 | failed: |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 544 | kfree(e); |
Stefan Richter | 1f3125a | 2008-12-05 22:44:42 +0100 | [diff] [blame] | 545 | |
| 546 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 547 | } |
| 548 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 549 | static void release_request(struct client *client, |
| 550 | struct client_resource *resource) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 551 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 552 | struct inbound_transaction_resource *r = container_of(resource, |
| 553 | struct inbound_transaction_resource, resource); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 554 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 555 | fw_send_response(client->device->card, r->request, |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 556 | RCODE_CONFLICT_ERROR); |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 557 | kfree(r); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 558 | } |
| 559 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 560 | static void handle_request(struct fw_card *card, struct fw_request *request, |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 561 | int tcode, int destination, int source, |
| 562 | int generation, int speed, |
| 563 | unsigned long long offset, |
| 564 | void *payload, size_t length, void *callback_data) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 565 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 566 | struct address_handler_resource *handler = callback_data; |
| 567 | struct inbound_transaction_resource *r; |
| 568 | struct inbound_transaction_event *e; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 569 | int ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 570 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 571 | r = kmalloc(sizeof(*r), GFP_ATOMIC); |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 572 | e = kmalloc(sizeof(*e), GFP_ATOMIC); |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 573 | if (r == NULL || e == NULL) |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 574 | goto failed; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 575 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 576 | r->request = request; |
| 577 | r->data = payload; |
| 578 | r->length = length; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 579 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 580 | r->resource.release = release_request; |
| 581 | ret = add_client_resource(handler->client, &r->resource, GFP_ATOMIC); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 582 | if (ret < 0) |
| 583 | goto failed; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 584 | |
| 585 | e->request.type = FW_CDEV_EVENT_REQUEST; |
| 586 | e->request.tcode = tcode; |
| 587 | e->request.offset = offset; |
| 588 | e->request.length = length; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 589 | e->request.handle = r->resource.handle; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 590 | e->request.closure = handler->closure; |
| 591 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 592 | queue_event(handler->client, &e->event, |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 593 | &e->request, sizeof(e->request), payload, length); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 594 | return; |
| 595 | |
| 596 | failed: |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 597 | kfree(r); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 598 | kfree(e); |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 599 | fw_send_response(card, request, RCODE_CONFLICT_ERROR); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 600 | } |
| 601 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 602 | static void release_address_handler(struct client *client, |
| 603 | struct client_resource *resource) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 604 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 605 | struct address_handler_resource *r = |
| 606 | container_of(resource, struct address_handler_resource, resource); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 607 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 608 | fw_core_remove_address_handler(&r->handler); |
| 609 | kfree(r); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 610 | } |
| 611 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 612 | static int ioctl_allocate(struct client *client, void *buffer) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 613 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 614 | struct fw_cdev_allocate *request = buffer; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 615 | struct address_handler_resource *r; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 616 | struct fw_address_region region; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 617 | int ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 618 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 619 | r = kmalloc(sizeof(*r), GFP_KERNEL); |
| 620 | if (r == NULL) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 621 | return -ENOMEM; |
| 622 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 623 | region.start = request->offset; |
| 624 | region.end = request->offset + request->length; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 625 | r->handler.length = request->length; |
| 626 | r->handler.address_callback = handle_request; |
| 627 | r->handler.callback_data = r; |
| 628 | r->closure = request->closure; |
| 629 | r->client = client; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 630 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 631 | ret = fw_core_add_address_handler(&r->handler, ®ion); |
Stefan Richter | 3e0b5f0 | 2008-12-14 19:21:01 +0100 | [diff] [blame] | 632 | if (ret < 0) { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 633 | kfree(r); |
Stefan Richter | 3e0b5f0 | 2008-12-14 19:21:01 +0100 | [diff] [blame] | 634 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 635 | } |
| 636 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 637 | r->resource.release = release_address_handler; |
| 638 | ret = add_client_resource(client, &r->resource, GFP_KERNEL); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 639 | if (ret < 0) { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 640 | release_address_handler(client, &r->resource); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 641 | return ret; |
| 642 | } |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 643 | request->handle = r->resource.handle; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 644 | |
| 645 | return 0; |
| 646 | } |
| 647 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 648 | static int ioctl_deallocate(struct client *client, void *buffer) |
Kristian Høgsberg | 9472316 | 2007-03-14 17:34:55 -0400 | [diff] [blame] | 649 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 650 | struct fw_cdev_deallocate *request = buffer; |
Kristian Høgsberg | 9472316 | 2007-03-14 17:34:55 -0400 | [diff] [blame] | 651 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 652 | return release_client_resource(client, request->handle, |
| 653 | release_address_handler, NULL); |
Kristian Høgsberg | 9472316 | 2007-03-14 17:34:55 -0400 | [diff] [blame] | 654 | } |
| 655 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 656 | static int ioctl_send_response(struct client *client, void *buffer) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 657 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 658 | struct fw_cdev_send_response *request = buffer; |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 659 | struct client_resource *resource; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 660 | struct inbound_transaction_resource *r; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 661 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 662 | if (release_client_resource(client, request->handle, |
| 663 | release_request, &resource) < 0) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 664 | return -EINVAL; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 665 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 666 | r = container_of(resource, struct inbound_transaction_resource, |
| 667 | resource); |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 668 | if (request->length < r->length) |
| 669 | r->length = request->length; |
| 670 | if (copy_from_user(r->data, u64_to_uptr(request->data), r->length)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 671 | return -EFAULT; |
| 672 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 673 | fw_send_response(client->device->card, r->request, request->rcode); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 674 | kfree(r); |
| 675 | |
| 676 | return 0; |
| 677 | } |
| 678 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 679 | static int ioctl_initiate_bus_reset(struct client *client, void *buffer) |
Kristian Høgsberg | 5371842 | 2007-03-07 12:12:42 -0500 | [diff] [blame] | 680 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 681 | struct fw_cdev_initiate_bus_reset *request = buffer; |
Kristian Høgsberg | 5371842 | 2007-03-07 12:12:42 -0500 | [diff] [blame] | 682 | int short_reset; |
| 683 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 684 | short_reset = (request->type == FW_CDEV_SHORT_RESET); |
Kristian Høgsberg | 5371842 | 2007-03-07 12:12:42 -0500 | [diff] [blame] | 685 | |
| 686 | return fw_core_initiate_bus_reset(client->device->card, short_reset); |
| 687 | } |
| 688 | |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 689 | static void release_descriptor(struct client *client, |
| 690 | struct client_resource *resource) |
| 691 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 692 | struct descriptor_resource *r = |
| 693 | container_of(resource, struct descriptor_resource, resource); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 694 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 695 | fw_core_remove_descriptor(&r->descriptor); |
| 696 | kfree(r); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 697 | } |
| 698 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 699 | static int ioctl_add_descriptor(struct client *client, void *buffer) |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 700 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 701 | struct fw_cdev_add_descriptor *request = buffer; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 702 | struct descriptor_resource *r; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 703 | int ret; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 704 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 705 | if (request->length > 256) |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 706 | return -EINVAL; |
| 707 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 708 | r = kmalloc(sizeof(*r) + request->length * 4, GFP_KERNEL); |
| 709 | if (r == NULL) |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 710 | return -ENOMEM; |
| 711 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 712 | if (copy_from_user(r->data, |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 713 | u64_to_uptr(request->data), request->length * 4)) { |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 714 | ret = -EFAULT; |
| 715 | goto failed; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 716 | } |
| 717 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 718 | r->descriptor.length = request->length; |
| 719 | r->descriptor.immediate = request->immediate; |
| 720 | r->descriptor.key = request->key; |
| 721 | r->descriptor.data = r->data; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 722 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 723 | ret = fw_core_add_descriptor(&r->descriptor); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 724 | if (ret < 0) |
| 725 | goto failed; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 726 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 727 | r->resource.release = release_descriptor; |
| 728 | ret = add_client_resource(client, &r->resource, GFP_KERNEL); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 729 | if (ret < 0) { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 730 | fw_core_remove_descriptor(&r->descriptor); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 731 | goto failed; |
| 732 | } |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 733 | request->handle = r->resource.handle; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 734 | |
| 735 | return 0; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 736 | failed: |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 737 | kfree(r); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 738 | |
| 739 | return ret; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 740 | } |
| 741 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 742 | static int ioctl_remove_descriptor(struct client *client, void *buffer) |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 743 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 744 | struct fw_cdev_remove_descriptor *request = buffer; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 745 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 746 | return release_client_resource(client, request->handle, |
| 747 | release_descriptor, NULL); |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 748 | } |
| 749 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 750 | static void iso_callback(struct fw_iso_context *context, u32 cycle, |
| 751 | size_t header_length, void *header, void *data) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 752 | { |
| 753 | struct client *client = data; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 754 | struct iso_interrupt_event *e; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 755 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 756 | e = kzalloc(sizeof(*e) + header_length, GFP_ATOMIC); |
| 757 | if (e == NULL) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 758 | return; |
| 759 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame^] | 760 | e->interrupt.type = FW_CDEV_EVENT_ISO_INTERRUPT; |
| 761 | e->interrupt.closure = client->iso_closure; |
| 762 | e->interrupt.cycle = cycle; |
| 763 | e->interrupt.header_length = header_length; |
| 764 | memcpy(e->interrupt.header, header, header_length); |
| 765 | queue_event(client, &e->event, &e->interrupt, |
| 766 | sizeof(e->interrupt) + header_length, NULL, 0); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 767 | } |
| 768 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 769 | static int ioctl_create_iso_context(struct client *client, void *buffer) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 770 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 771 | struct fw_cdev_create_iso_context *request = buffer; |
Kristian Høgsberg | 24315c5 | 2007-06-20 17:48:07 -0400 | [diff] [blame] | 772 | struct fw_iso_context *context; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 773 | |
Stefan Richter | fae6031 | 2008-02-20 21:10:06 +0100 | [diff] [blame] | 774 | /* We only support one context at this time. */ |
| 775 | if (client->iso_context != NULL) |
| 776 | return -EBUSY; |
| 777 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 778 | if (request->channel > 63) |
Kristian Høgsberg | 21efb3c | 2007-02-16 17:34:50 -0500 | [diff] [blame] | 779 | return -EINVAL; |
| 780 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 781 | switch (request->type) { |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 782 | case FW_ISO_CONTEXT_RECEIVE: |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 783 | if (request->header_size < 4 || (request->header_size & 3)) |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 784 | return -EINVAL; |
| 785 | |
| 786 | break; |
| 787 | |
| 788 | case FW_ISO_CONTEXT_TRANSMIT: |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 789 | if (request->speed > SCODE_3200) |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 790 | return -EINVAL; |
| 791 | |
| 792 | break; |
| 793 | |
| 794 | default: |
Kristian Høgsberg | 21efb3c | 2007-02-16 17:34:50 -0500 | [diff] [blame] | 795 | return -EINVAL; |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 796 | } |
| 797 | |
Kristian Høgsberg | 24315c5 | 2007-06-20 17:48:07 -0400 | [diff] [blame] | 798 | context = fw_iso_context_create(client->device->card, |
| 799 | request->type, |
| 800 | request->channel, |
| 801 | request->speed, |
| 802 | request->header_size, |
| 803 | iso_callback, client); |
| 804 | if (IS_ERR(context)) |
| 805 | return PTR_ERR(context); |
| 806 | |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 807 | client->iso_closure = request->closure; |
Kristian Høgsberg | 24315c5 | 2007-06-20 17:48:07 -0400 | [diff] [blame] | 808 | client->iso_context = context; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 809 | |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 810 | /* We only support one context at this time. */ |
| 811 | request->handle = 0; |
| 812 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 813 | return 0; |
| 814 | } |
| 815 | |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 816 | /* Macros for decoding the iso packet control header. */ |
| 817 | #define GET_PAYLOAD_LENGTH(v) ((v) & 0xffff) |
| 818 | #define GET_INTERRUPT(v) (((v) >> 16) & 0x01) |
| 819 | #define GET_SKIP(v) (((v) >> 17) & 0x01) |
Stefan Richter | 7a10034 | 2008-09-12 18:09:55 +0200 | [diff] [blame] | 820 | #define GET_TAG(v) (((v) >> 18) & 0x03) |
| 821 | #define GET_SY(v) (((v) >> 20) & 0x0f) |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 822 | #define GET_HEADER_LENGTH(v) (((v) >> 24) & 0xff) |
| 823 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 824 | static int ioctl_queue_iso(struct client *client, void *buffer) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 825 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 826 | struct fw_cdev_queue_iso *request = buffer; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 827 | struct fw_cdev_iso_packet __user *p, *end, *next; |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 828 | struct fw_iso_context *ctx = client->iso_context; |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 829 | unsigned long payload, buffer_end, header_length; |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 830 | u32 control; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 831 | int count; |
| 832 | struct { |
| 833 | struct fw_iso_packet packet; |
| 834 | u8 header[256]; |
| 835 | } u; |
| 836 | |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 837 | if (ctx == NULL || request->handle != 0) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 838 | return -EINVAL; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 839 | |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 840 | /* |
| 841 | * If the user passes a non-NULL data pointer, has mmap()'ed |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 842 | * the iso buffer, and the pointer points inside the buffer, |
| 843 | * we setup the payload pointers accordingly. Otherwise we |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 844 | * set them both to 0, which will still let packets with |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 845 | * payload_length == 0 through. In other words, if no packets |
| 846 | * use the indirect payload, the iso buffer need not be mapped |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 847 | * and the request->data pointer is ignored. |
| 848 | */ |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 849 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 850 | payload = (unsigned long)request->data - client->vm_start; |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 851 | buffer_end = client->buffer.page_count << PAGE_SHIFT; |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 852 | if (request->data == 0 || client->buffer.pages == NULL || |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 853 | payload >= buffer_end) { |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 854 | payload = 0; |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 855 | buffer_end = 0; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 856 | } |
| 857 | |
Al Viro | 1ccc914 | 2007-10-14 19:34:40 +0100 | [diff] [blame] | 858 | p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(request->packets); |
| 859 | |
| 860 | if (!access_ok(VERIFY_READ, p, request->size)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 861 | return -EFAULT; |
| 862 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 863 | end = (void __user *)p + request->size; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 864 | count = 0; |
| 865 | while (p < end) { |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 866 | if (get_user(control, &p->control)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 867 | return -EFAULT; |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 868 | u.packet.payload_length = GET_PAYLOAD_LENGTH(control); |
| 869 | u.packet.interrupt = GET_INTERRUPT(control); |
| 870 | u.packet.skip = GET_SKIP(control); |
| 871 | u.packet.tag = GET_TAG(control); |
| 872 | u.packet.sy = GET_SY(control); |
| 873 | u.packet.header_length = GET_HEADER_LENGTH(control); |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 874 | |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 875 | if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) { |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 876 | header_length = u.packet.header_length; |
| 877 | } else { |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 878 | /* |
| 879 | * We require that header_length is a multiple of |
| 880 | * the fixed header size, ctx->header_size. |
| 881 | */ |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 882 | if (ctx->header_size == 0) { |
| 883 | if (u.packet.header_length > 0) |
| 884 | return -EINVAL; |
| 885 | } else if (u.packet.header_length % ctx->header_size != 0) { |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 886 | return -EINVAL; |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 887 | } |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 888 | header_length = 0; |
| 889 | } |
| 890 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 891 | next = (struct fw_cdev_iso_packet __user *) |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 892 | &p->header[header_length / 4]; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 893 | if (next > end) |
| 894 | return -EINVAL; |
| 895 | if (__copy_from_user |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 896 | (u.packet.header, p->header, header_length)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 897 | return -EFAULT; |
Kristian Høgsberg | 98b6cbe | 2007-02-16 17:34:51 -0500 | [diff] [blame] | 898 | if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT && |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 899 | u.packet.header_length + u.packet.payload_length > 0) |
| 900 | return -EINVAL; |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 901 | if (payload + u.packet.payload_length > buffer_end) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 902 | return -EINVAL; |
| 903 | |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 904 | if (fw_iso_context_queue(ctx, &u.packet, |
| 905 | &client->buffer, payload)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 906 | break; |
| 907 | |
| 908 | p = next; |
| 909 | payload += u.packet.payload_length; |
| 910 | count++; |
| 911 | } |
| 912 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 913 | request->size -= uptr_to_u64(p) - request->packets; |
| 914 | request->packets = uptr_to_u64(p); |
| 915 | request->data = client->vm_start + payload; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 916 | |
| 917 | return count; |
| 918 | } |
| 919 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 920 | static int ioctl_start_iso(struct client *client, void *buffer) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 921 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 922 | struct fw_cdev_start_iso *request = buffer; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 923 | |
Stefan Richter | fae6031 | 2008-02-20 21:10:06 +0100 | [diff] [blame] | 924 | if (client->iso_context == NULL || request->handle != 0) |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 925 | return -EINVAL; |
Stefan Richter | fae6031 | 2008-02-20 21:10:06 +0100 | [diff] [blame] | 926 | |
Kristian Høgsberg | eb0306e | 2007-03-14 17:34:54 -0400 | [diff] [blame] | 927 | if (client->iso_context->type == FW_ISO_CONTEXT_RECEIVE) { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 928 | if (request->tags == 0 || request->tags > 15) |
Kristian Høgsberg | eb0306e | 2007-03-14 17:34:54 -0400 | [diff] [blame] | 929 | return -EINVAL; |
| 930 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 931 | if (request->sync > 15) |
Kristian Høgsberg | eb0306e | 2007-03-14 17:34:54 -0400 | [diff] [blame] | 932 | return -EINVAL; |
| 933 | } |
| 934 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 935 | return fw_iso_context_start(client->iso_context, request->cycle, |
| 936 | request->sync, request->tags); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 937 | } |
| 938 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 939 | static int ioctl_stop_iso(struct client *client, void *buffer) |
Kristian Høgsberg | b829566 | 2007-02-16 17:34:42 -0500 | [diff] [blame] | 940 | { |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 941 | struct fw_cdev_stop_iso *request = buffer; |
| 942 | |
Stefan Richter | fae6031 | 2008-02-20 21:10:06 +0100 | [diff] [blame] | 943 | if (client->iso_context == NULL || request->handle != 0) |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 944 | return -EINVAL; |
| 945 | |
Kristian Høgsberg | b829566 | 2007-02-16 17:34:42 -0500 | [diff] [blame] | 946 | return fw_iso_context_stop(client->iso_context); |
| 947 | } |
| 948 | |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 949 | static int ioctl_get_cycle_timer(struct client *client, void *buffer) |
| 950 | { |
| 951 | struct fw_cdev_get_cycle_timer *request = buffer; |
| 952 | struct fw_card *card = client->device->card; |
| 953 | unsigned long long bus_time; |
| 954 | struct timeval tv; |
| 955 | unsigned long flags; |
| 956 | |
| 957 | preempt_disable(); |
| 958 | local_irq_save(flags); |
| 959 | |
| 960 | bus_time = card->driver->get_bus_time(card); |
| 961 | do_gettimeofday(&tv); |
| 962 | |
| 963 | local_irq_restore(flags); |
| 964 | preempt_enable(); |
| 965 | |
| 966 | request->local_time = tv.tv_sec * 1000000ULL + tv.tv_usec; |
| 967 | request->cycle_timer = bus_time & 0xffffffff; |
| 968 | return 0; |
| 969 | } |
| 970 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 971 | static int (* const ioctl_handlers[])(struct client *client, void *buffer) = { |
| 972 | ioctl_get_info, |
| 973 | ioctl_send_request, |
| 974 | ioctl_allocate, |
| 975 | ioctl_deallocate, |
| 976 | ioctl_send_response, |
| 977 | ioctl_initiate_bus_reset, |
| 978 | ioctl_add_descriptor, |
| 979 | ioctl_remove_descriptor, |
| 980 | ioctl_create_iso_context, |
| 981 | ioctl_queue_iso, |
| 982 | ioctl_start_iso, |
| 983 | ioctl_stop_iso, |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 984 | ioctl_get_cycle_timer, |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 985 | }; |
| 986 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 987 | static int dispatch_ioctl(struct client *client, |
| 988 | unsigned int cmd, void __user *arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 989 | { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 990 | char buffer[256]; |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 991 | int ret; |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 992 | |
| 993 | if (_IOC_TYPE(cmd) != '#' || |
| 994 | _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 995 | return -EINVAL; |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 996 | |
| 997 | if (_IOC_DIR(cmd) & _IOC_WRITE) { |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 998 | if (_IOC_SIZE(cmd) > sizeof(buffer) || |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 999 | copy_from_user(buffer, arg, _IOC_SIZE(cmd))) |
| 1000 | return -EFAULT; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1001 | } |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1002 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1003 | ret = ioctl_handlers[_IOC_NR(cmd)](client, buffer); |
| 1004 | if (ret < 0) |
| 1005 | return ret; |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1006 | |
| 1007 | if (_IOC_DIR(cmd) & _IOC_READ) { |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 1008 | if (_IOC_SIZE(cmd) > sizeof(buffer) || |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1009 | copy_to_user(arg, buffer, _IOC_SIZE(cmd))) |
| 1010 | return -EFAULT; |
| 1011 | } |
| 1012 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1013 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1014 | } |
| 1015 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 1016 | static long fw_device_op_ioctl(struct file *file, |
| 1017 | unsigned int cmd, unsigned long arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1018 | { |
| 1019 | struct client *client = file->private_data; |
| 1020 | |
Jay Fenlason | 551f4cb | 2008-05-16 11:15:23 -0400 | [diff] [blame] | 1021 | if (fw_device_is_shutdown(client->device)) |
| 1022 | return -ENODEV; |
| 1023 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1024 | return dispatch_ioctl(client, cmd, (void __user *) arg); |
| 1025 | } |
| 1026 | |
| 1027 | #ifdef CONFIG_COMPAT |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 1028 | static long fw_device_op_compat_ioctl(struct file *file, |
| 1029 | unsigned int cmd, unsigned long arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1030 | { |
| 1031 | struct client *client = file->private_data; |
| 1032 | |
Jay Fenlason | 551f4cb | 2008-05-16 11:15:23 -0400 | [diff] [blame] | 1033 | if (fw_device_is_shutdown(client->device)) |
| 1034 | return -ENODEV; |
| 1035 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1036 | return dispatch_ioctl(client, cmd, compat_ptr(arg)); |
| 1037 | } |
| 1038 | #endif |
| 1039 | |
| 1040 | static int fw_device_op_mmap(struct file *file, struct vm_area_struct *vma) |
| 1041 | { |
| 1042 | struct client *client = file->private_data; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1043 | enum dma_data_direction direction; |
| 1044 | unsigned long size; |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1045 | int page_count, ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1046 | |
Jay Fenlason | 551f4cb | 2008-05-16 11:15:23 -0400 | [diff] [blame] | 1047 | if (fw_device_is_shutdown(client->device)) |
| 1048 | return -ENODEV; |
| 1049 | |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1050 | /* FIXME: We could support multiple buffers, but we don't. */ |
| 1051 | if (client->buffer.pages != NULL) |
| 1052 | return -EBUSY; |
| 1053 | |
| 1054 | if (!(vma->vm_flags & VM_SHARED)) |
| 1055 | return -EINVAL; |
| 1056 | |
| 1057 | if (vma->vm_start & ~PAGE_MASK) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1058 | return -EINVAL; |
| 1059 | |
| 1060 | client->vm_start = vma->vm_start; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1061 | size = vma->vm_end - vma->vm_start; |
| 1062 | page_count = size >> PAGE_SHIFT; |
| 1063 | if (size & ~PAGE_MASK) |
| 1064 | return -EINVAL; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1065 | |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1066 | if (vma->vm_flags & VM_WRITE) |
| 1067 | direction = DMA_TO_DEVICE; |
| 1068 | else |
| 1069 | direction = DMA_FROM_DEVICE; |
| 1070 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1071 | ret = fw_iso_buffer_init(&client->buffer, client->device->card, |
| 1072 | page_count, direction); |
| 1073 | if (ret < 0) |
| 1074 | return ret; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1075 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1076 | ret = fw_iso_buffer_map(&client->buffer, vma); |
| 1077 | if (ret < 0) |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1078 | fw_iso_buffer_destroy(&client->buffer, client->device->card); |
| 1079 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1080 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1081 | } |
| 1082 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1083 | static int shutdown_resource(int id, void *p, void *data) |
| 1084 | { |
| 1085 | struct client_resource *r = p; |
| 1086 | struct client *client = data; |
| 1087 | |
| 1088 | r->release(client, r); |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1089 | client_put(client); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1090 | |
| 1091 | return 0; |
| 1092 | } |
| 1093 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1094 | static int fw_device_op_release(struct inode *inode, struct file *file) |
| 1095 | { |
| 1096 | struct client *client = file->private_data; |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 1097 | struct event *e, *next_e; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1098 | unsigned long flags; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1099 | |
Stefan Richter | 97811e3 | 2008-12-14 19:19:23 +0100 | [diff] [blame] | 1100 | mutex_lock(&client->device->client_list_mutex); |
| 1101 | list_del(&client->link); |
| 1102 | mutex_unlock(&client->device->client_list_mutex); |
| 1103 | |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1104 | if (client->buffer.pages) |
| 1105 | fw_iso_buffer_destroy(&client->buffer, client->device->card); |
| 1106 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1107 | if (client->iso_context) |
| 1108 | fw_iso_context_destroy(client->iso_context); |
| 1109 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1110 | /* Freeze client->resource_idr and client->event_list */ |
| 1111 | spin_lock_irqsave(&client->lock, flags); |
| 1112 | client->in_shutdown = true; |
| 1113 | spin_unlock_irqrestore(&client->lock, flags); |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 1114 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1115 | idr_for_each(&client->resource_idr, shutdown_resource, client); |
| 1116 | idr_remove_all(&client->resource_idr); |
| 1117 | idr_destroy(&client->resource_idr); |
Kristian Høgsberg | 28cf6a0 | 2007-03-07 12:12:50 -0500 | [diff] [blame] | 1118 | |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 1119 | list_for_each_entry_safe(e, next_e, &client->event_list, link) |
| 1120 | kfree(e); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1121 | |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1122 | client_put(client); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1123 | |
| 1124 | return 0; |
| 1125 | } |
| 1126 | |
| 1127 | static unsigned int fw_device_op_poll(struct file *file, poll_table * pt) |
| 1128 | { |
| 1129 | struct client *client = file->private_data; |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 1130 | unsigned int mask = 0; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1131 | |
| 1132 | poll_wait(file, &client->wait, pt); |
| 1133 | |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 1134 | if (fw_device_is_shutdown(client->device)) |
| 1135 | mask |= POLLHUP | POLLERR; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1136 | if (!list_empty(&client->event_list)) |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 1137 | mask |= POLLIN | POLLRDNORM; |
| 1138 | |
| 1139 | return mask; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1140 | } |
| 1141 | |
Stefan Richter | 21ebcd1 | 2007-01-14 15:29:07 +0100 | [diff] [blame] | 1142 | const struct file_operations fw_device_ops = { |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1143 | .owner = THIS_MODULE, |
| 1144 | .open = fw_device_op_open, |
| 1145 | .read = fw_device_op_read, |
| 1146 | .unlocked_ioctl = fw_device_op_ioctl, |
| 1147 | .poll = fw_device_op_poll, |
| 1148 | .release = fw_device_op_release, |
| 1149 | .mmap = fw_device_op_mmap, |
| 1150 | |
| 1151 | #ifdef CONFIG_COMPAT |
Stefan Richter | 5af4e5e | 2007-01-21 20:45:32 +0100 | [diff] [blame] | 1152 | .compat_ioctl = fw_device_op_compat_ioctl, |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1153 | #endif |
| 1154 | }; |