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 | |
Stefan Richter | be5bbd6 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 21 | #include <linux/compat.h> |
| 22 | #include <linux/delay.h> |
| 23 | #include <linux/device.h> |
| 24 | #include <linux/errno.h> |
Stefan Richter | 77c9a5d | 2009-06-05 16:26:18 +0200 | [diff] [blame] | 25 | #include <linux/firewire.h> |
Stefan Richter | be5bbd6 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 26 | #include <linux/firewire-cdev.h> |
| 27 | #include <linux/idr.h> |
Stefan Richter | 4a9bde9 | 2010-02-20 22:24:43 +0100 | [diff] [blame] | 28 | #include <linux/irqflags.h> |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 29 | #include <linux/jiffies.h> |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 30 | #include <linux/kernel.h> |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 31 | #include <linux/kref.h> |
Stefan Richter | be5bbd6 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 32 | #include <linux/mm.h> |
| 33 | #include <linux/module.h> |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 34 | #include <linux/mutex.h> |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 35 | #include <linux/poll.h> |
Alexey Dobriyan | a99bbaf | 2009-10-04 16:11:37 +0400 | [diff] [blame] | 36 | #include <linux/sched.h> |
Jay Fenlason | cf417e54 | 2008-10-03 11:19:09 -0400 | [diff] [blame] | 37 | #include <linux/spinlock.h> |
Stefan Richter | 281e203 | 2010-01-24 16:45:03 +0100 | [diff] [blame] | 38 | #include <linux/string.h> |
Stefan Richter | be5bbd6 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 39 | #include <linux/time.h> |
Stefan Richter | e034d24 | 2009-06-06 18:36:24 +0200 | [diff] [blame] | 40 | #include <linux/uaccess.h> |
Stefan Richter | be5bbd6 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 41 | #include <linux/vmalloc.h> |
| 42 | #include <linux/wait.h> |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 43 | #include <linux/workqueue.h> |
Stefan Richter | be5bbd6 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 44 | |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 45 | #include <asm/system.h> |
Stefan Richter | be5bbd6 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 46 | |
Stefan Richter | 77c9a5d | 2009-06-05 16:26:18 +0200 | [diff] [blame] | 47 | #include "core.h" |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 48 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 49 | struct client { |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 50 | u32 version; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 51 | struct fw_device *device; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 52 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 53 | spinlock_t lock; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 54 | bool in_shutdown; |
| 55 | struct idr resource_idr; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 56 | struct list_head event_list; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 57 | wait_queue_head_t wait; |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 58 | u64 bus_reset_closure; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 59 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 60 | struct fw_iso_context *iso_context; |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 61 | u64 iso_closure; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 62 | struct fw_iso_buffer buffer; |
| 63 | unsigned long vm_start; |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 64 | |
| 65 | struct list_head link; |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 66 | struct kref kref; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 67 | }; |
| 68 | |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 69 | static inline void client_get(struct client *client) |
| 70 | { |
| 71 | kref_get(&client->kref); |
| 72 | } |
| 73 | |
| 74 | static void client_release(struct kref *kref) |
| 75 | { |
| 76 | struct client *client = container_of(kref, struct client, kref); |
| 77 | |
| 78 | fw_device_put(client->device); |
| 79 | kfree(client); |
| 80 | } |
| 81 | |
| 82 | static void client_put(struct client *client) |
| 83 | { |
| 84 | kref_put(&client->kref, client_release); |
| 85 | } |
| 86 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 87 | struct client_resource; |
| 88 | typedef void (*client_resource_release_fn_t)(struct client *, |
| 89 | struct client_resource *); |
| 90 | struct client_resource { |
| 91 | client_resource_release_fn_t release; |
| 92 | int handle; |
| 93 | }; |
| 94 | |
| 95 | struct address_handler_resource { |
| 96 | struct client_resource resource; |
| 97 | struct fw_address_handler handler; |
| 98 | __u64 closure; |
| 99 | struct client *client; |
| 100 | }; |
| 101 | |
| 102 | struct outbound_transaction_resource { |
| 103 | struct client_resource resource; |
| 104 | struct fw_transaction transaction; |
| 105 | }; |
| 106 | |
| 107 | struct inbound_transaction_resource { |
| 108 | struct client_resource resource; |
| 109 | struct fw_request *request; |
| 110 | void *data; |
| 111 | size_t length; |
| 112 | }; |
| 113 | |
| 114 | struct descriptor_resource { |
| 115 | struct client_resource resource; |
| 116 | struct fw_descriptor descriptor; |
| 117 | u32 data[0]; |
| 118 | }; |
| 119 | |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 120 | struct iso_resource { |
| 121 | struct client_resource resource; |
| 122 | struct client *client; |
| 123 | /* Schedule work and access todo only with client->lock held. */ |
| 124 | struct delayed_work work; |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 125 | enum {ISO_RES_ALLOC, ISO_RES_REALLOC, ISO_RES_DEALLOC, |
| 126 | ISO_RES_ALLOC_ONCE, ISO_RES_DEALLOC_ONCE,} todo; |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 127 | int generation; |
| 128 | u64 channels; |
| 129 | s32 bandwidth; |
Stefan Richter | 6fdc037 | 2009-06-20 13:23:59 +0200 | [diff] [blame] | 130 | __be32 transaction_data[2]; |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 131 | struct iso_resource_event *e_alloc, *e_dealloc; |
| 132 | }; |
| 133 | |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 134 | static void release_iso_resource(struct client *, struct client_resource *); |
| 135 | |
Stefan Richter | 9fb551b | 2009-10-08 00:41:10 +0200 | [diff] [blame] | 136 | static void schedule_iso_resource(struct iso_resource *r, unsigned long delay) |
| 137 | { |
| 138 | client_get(r->client); |
| 139 | if (!schedule_delayed_work(&r->work, delay)) |
| 140 | client_put(r->client); |
| 141 | } |
| 142 | |
| 143 | static void schedule_if_iso_resource(struct client_resource *resource) |
| 144 | { |
| 145 | if (resource->release == release_iso_resource) |
| 146 | schedule_iso_resource(container_of(resource, |
| 147 | struct iso_resource, resource), 0); |
| 148 | } |
| 149 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 150 | /* |
| 151 | * dequeue_event() just kfree()'s the event, so the event has to be |
| 152 | * the first field in a struct XYZ_event. |
| 153 | */ |
| 154 | struct event { |
| 155 | struct { void *data; size_t size; } v[2]; |
| 156 | struct list_head link; |
| 157 | }; |
| 158 | |
| 159 | struct bus_reset_event { |
| 160 | struct event event; |
| 161 | struct fw_cdev_event_bus_reset reset; |
| 162 | }; |
| 163 | |
| 164 | struct outbound_transaction_event { |
| 165 | struct event event; |
| 166 | struct client *client; |
| 167 | struct outbound_transaction_resource r; |
| 168 | struct fw_cdev_event_response response; |
| 169 | }; |
| 170 | |
| 171 | struct inbound_transaction_event { |
| 172 | struct event event; |
| 173 | struct fw_cdev_event_request request; |
| 174 | }; |
| 175 | |
| 176 | struct iso_interrupt_event { |
| 177 | struct event event; |
| 178 | struct fw_cdev_event_iso_interrupt interrupt; |
| 179 | }; |
| 180 | |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 181 | struct iso_resource_event { |
| 182 | struct event event; |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 183 | struct fw_cdev_event_iso_resource iso_resource; |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 184 | }; |
| 185 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 186 | static inline void __user *u64_to_uptr(__u64 value) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 187 | { |
| 188 | return (void __user *)(unsigned long)value; |
| 189 | } |
| 190 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 191 | static inline __u64 uptr_to_u64(void __user *ptr) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 192 | { |
| 193 | return (__u64)(unsigned long)ptr; |
| 194 | } |
| 195 | |
| 196 | static int fw_device_op_open(struct inode *inode, struct file *file) |
| 197 | { |
| 198 | struct fw_device *device; |
| 199 | struct client *client; |
| 200 | |
Stefan Richter | 96b1906 | 2008-02-02 15:01:09 +0100 | [diff] [blame] | 201 | device = fw_device_get_by_devt(inode->i_rdev); |
Kristian Høgsberg | a3aca3d | 2007-03-07 12:12:44 -0500 | [diff] [blame] | 202 | if (device == NULL) |
| 203 | return -ENODEV; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 204 | |
Jay Fenlason | 551f4cb | 2008-05-16 11:15:23 -0400 | [diff] [blame] | 205 | if (fw_device_is_shutdown(device)) { |
| 206 | fw_device_put(device); |
| 207 | return -ENODEV; |
| 208 | } |
| 209 | |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 210 | client = kzalloc(sizeof(*client), GFP_KERNEL); |
Stefan Richter | 96b1906 | 2008-02-02 15:01:09 +0100 | [diff] [blame] | 211 | if (client == NULL) { |
| 212 | fw_device_put(device); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 213 | return -ENOMEM; |
Stefan Richter | 96b1906 | 2008-02-02 15:01:09 +0100 | [diff] [blame] | 214 | } |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 215 | |
Stefan Richter | 96b1906 | 2008-02-02 15:01:09 +0100 | [diff] [blame] | 216 | client->device = device; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 217 | spin_lock_init(&client->lock); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 218 | idr_init(&client->resource_idr); |
| 219 | INIT_LIST_HEAD(&client->event_list); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 220 | init_waitqueue_head(&client->wait); |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 221 | kref_init(&client->kref); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 222 | |
| 223 | file->private_data = client; |
| 224 | |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 225 | mutex_lock(&device->client_list_mutex); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 226 | list_add_tail(&client->link, &device->client_list); |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 227 | mutex_unlock(&device->client_list_mutex); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 228 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | static void queue_event(struct client *client, struct event *event, |
| 233 | void *data0, size_t size0, void *data1, size_t size1) |
| 234 | { |
| 235 | unsigned long flags; |
| 236 | |
| 237 | event->v[0].data = data0; |
| 238 | event->v[0].size = size0; |
| 239 | event->v[1].data = data1; |
| 240 | event->v[1].size = size1; |
| 241 | |
| 242 | spin_lock_irqsave(&client->lock, flags); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 243 | if (client->in_shutdown) |
| 244 | kfree(event); |
| 245 | else |
| 246 | list_add_tail(&event->link, &client->event_list); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 247 | spin_unlock_irqrestore(&client->lock, flags); |
Jay Fenlason | 83431cb | 2007-10-08 17:00:29 -0400 | [diff] [blame] | 248 | |
| 249 | wake_up_interruptible(&client->wait); |
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 int dequeue_event(struct client *client, |
| 253 | char __user *buffer, size_t count) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 254 | { |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 255 | struct event *event; |
| 256 | size_t size, total; |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 257 | int i, ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 258 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 259 | ret = wait_event_interruptible(client->wait, |
| 260 | !list_empty(&client->event_list) || |
| 261 | fw_device_is_shutdown(client->device)); |
| 262 | if (ret < 0) |
| 263 | return ret; |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 264 | |
| 265 | if (list_empty(&client->event_list) && |
| 266 | fw_device_is_shutdown(client->device)) |
| 267 | return -ENODEV; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 268 | |
Stefan Richter | 3ba9498 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 269 | spin_lock_irq(&client->lock); |
Stefan Richter | a459b8a | 2008-12-21 16:49:57 +0100 | [diff] [blame] | 270 | event = list_first_entry(&client->event_list, struct event, link); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 271 | list_del(&event->link); |
Stefan Richter | 3ba9498 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 272 | spin_unlock_irq(&client->lock); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 273 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 274 | total = 0; |
| 275 | for (i = 0; i < ARRAY_SIZE(event->v) && total < count; i++) { |
| 276 | size = min(event->v[i].size, count - total); |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 277 | if (copy_to_user(buffer + total, event->v[i].data, size)) { |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 278 | ret = -EFAULT; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 279 | goto out; |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 280 | } |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 281 | total += size; |
| 282 | } |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 283 | ret = total; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 284 | |
| 285 | out: |
| 286 | kfree(event); |
| 287 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 288 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 289 | } |
| 290 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 291 | static ssize_t fw_device_op_read(struct file *file, char __user *buffer, |
| 292 | size_t count, loff_t *offset) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 293 | { |
| 294 | struct client *client = file->private_data; |
| 295 | |
| 296 | return dequeue_event(client, buffer, count); |
| 297 | } |
| 298 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 299 | static void fill_bus_reset_event(struct fw_cdev_event_bus_reset *event, |
| 300 | struct client *client) |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 301 | { |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 302 | struct fw_card *card = client->device->card; |
Jay Fenlason | cf417e54 | 2008-10-03 11:19:09 -0400 | [diff] [blame] | 303 | |
Stefan Richter | 3ba9498 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 304 | spin_lock_irq(&card->lock); |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 305 | |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 306 | event->closure = client->bus_reset_closure; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 307 | event->type = FW_CDEV_EVENT_BUS_RESET; |
Stefan Richter | cf5a56a | 2008-01-24 01:53:51 +0100 | [diff] [blame] | 308 | event->generation = client->device->generation; |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 309 | event->node_id = client->device->node_id; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 310 | event->local_node_id = card->local_node->node_id; |
| 311 | event->bm_node_id = 0; /* FIXME: We don't track the BM. */ |
| 312 | event->irm_node_id = card->irm_node->node_id; |
| 313 | event->root_node_id = card->root_node->node_id; |
Jay Fenlason | cf417e54 | 2008-10-03 11:19:09 -0400 | [diff] [blame] | 314 | |
Stefan Richter | 3ba9498 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 315 | spin_unlock_irq(&card->lock); |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 316 | } |
| 317 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 318 | static void for_each_client(struct fw_device *device, |
| 319 | void (*callback)(struct client *client)) |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 320 | { |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 321 | struct client *c; |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 322 | |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 323 | mutex_lock(&device->client_list_mutex); |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 324 | list_for_each_entry(c, &device->client_list, link) |
| 325 | callback(c); |
Stefan Richter | d67cfb9 | 2008-10-05 10:37:11 +0200 | [diff] [blame] | 326 | mutex_unlock(&device->client_list_mutex); |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 327 | } |
| 328 | |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 329 | static int schedule_reallocations(int id, void *p, void *data) |
| 330 | { |
Stefan Richter | 9fb551b | 2009-10-08 00:41:10 +0200 | [diff] [blame] | 331 | schedule_if_iso_resource(p); |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 332 | |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 333 | return 0; |
| 334 | } |
| 335 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 336 | static void queue_bus_reset_event(struct client *client) |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 337 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 338 | struct bus_reset_event *e; |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 339 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 340 | e = kzalloc(sizeof(*e), GFP_KERNEL); |
| 341 | if (e == NULL) { |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 342 | fw_notify("Out of memory when allocating bus reset event\n"); |
| 343 | return; |
| 344 | } |
| 345 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 346 | fill_bus_reset_event(&e->reset, client); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 347 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 348 | queue_event(client, &e->event, |
| 349 | &e->reset, sizeof(e->reset), NULL, 0); |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 350 | |
| 351 | spin_lock_irq(&client->lock); |
| 352 | idr_for_each(&client->resource_idr, schedule_reallocations, client); |
| 353 | spin_unlock_irq(&client->lock); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 354 | } |
| 355 | |
| 356 | void fw_device_cdev_update(struct fw_device *device) |
| 357 | { |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 358 | for_each_client(device, queue_bus_reset_event); |
| 359 | } |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 360 | |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 361 | static void wake_up_client(struct client *client) |
| 362 | { |
| 363 | wake_up_interruptible(&client->wait); |
| 364 | } |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 365 | |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 366 | void fw_device_cdev_remove(struct fw_device *device) |
| 367 | { |
| 368 | for_each_client(device, wake_up_client); |
Kristian Høgsberg | 97bd9ef | 2007-03-07 12:12:41 -0500 | [diff] [blame] | 369 | } |
| 370 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 371 | union ioctl_arg { |
| 372 | struct fw_cdev_get_info get_info; |
| 373 | struct fw_cdev_send_request send_request; |
| 374 | struct fw_cdev_allocate allocate; |
| 375 | struct fw_cdev_deallocate deallocate; |
| 376 | struct fw_cdev_send_response send_response; |
| 377 | struct fw_cdev_initiate_bus_reset initiate_bus_reset; |
| 378 | struct fw_cdev_add_descriptor add_descriptor; |
| 379 | struct fw_cdev_remove_descriptor remove_descriptor; |
| 380 | struct fw_cdev_create_iso_context create_iso_context; |
| 381 | struct fw_cdev_queue_iso queue_iso; |
| 382 | struct fw_cdev_start_iso start_iso; |
| 383 | struct fw_cdev_stop_iso stop_iso; |
| 384 | struct fw_cdev_get_cycle_timer get_cycle_timer; |
| 385 | struct fw_cdev_allocate_iso_resource allocate_iso_resource; |
| 386 | struct fw_cdev_send_stream_packet send_stream_packet; |
| 387 | struct fw_cdev_get_cycle_timer2 get_cycle_timer2; |
| 388 | }; |
| 389 | |
| 390 | static int ioctl_get_info(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 391 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 392 | struct fw_cdev_get_info *a = &arg->get_info; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 393 | struct fw_cdev_event_bus_reset bus_reset; |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 394 | unsigned long ret = 0; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 395 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 396 | client->version = a->version; |
| 397 | a->version = FW_CDEV_VERSION; |
| 398 | a->card = client->device->card->index; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 399 | |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 400 | down_read(&fw_device_rwsem); |
| 401 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 402 | if (a->rom != 0) { |
| 403 | size_t want = a->rom_length; |
Stefan Richter | d84702a | 2007-03-20 19:42:15 +0100 | [diff] [blame] | 404 | size_t have = client->device->config_rom_length * 4; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 405 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 406 | ret = copy_to_user(u64_to_uptr(a->rom), |
| 407 | client->device->config_rom, min(want, have)); |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 408 | } |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 409 | a->rom_length = client->device->config_rom_length * 4; |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 410 | |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 411 | up_read(&fw_device_rwsem); |
| 412 | |
| 413 | if (ret != 0) |
| 414 | return -EFAULT; |
| 415 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 416 | client->bus_reset_closure = a->bus_reset_closure; |
| 417 | if (a->bus_reset != 0) { |
Kristian Høgsberg | da8ecff | 2007-03-27 01:43:39 -0400 | [diff] [blame] | 418 | fill_bus_reset_event(&bus_reset, client); |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 419 | if (copy_to_user(u64_to_uptr(a->bus_reset), |
| 420 | &bus_reset, sizeof(bus_reset))) |
Kristian Høgsberg | 344bbc4 | 2007-03-07 12:12:43 -0500 | [diff] [blame] | 421 | return -EFAULT; |
| 422 | } |
| 423 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 424 | return 0; |
| 425 | } |
| 426 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 427 | static int add_client_resource(struct client *client, |
| 428 | struct client_resource *resource, gfp_t gfp_mask) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 429 | { |
| 430 | unsigned long flags; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 431 | int ret; |
| 432 | |
| 433 | retry: |
| 434 | if (idr_pre_get(&client->resource_idr, gfp_mask) == 0) |
| 435 | return -ENOMEM; |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 436 | |
| 437 | spin_lock_irqsave(&client->lock, flags); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 438 | if (client->in_shutdown) |
| 439 | ret = -ECANCELED; |
| 440 | else |
| 441 | ret = idr_get_new(&client->resource_idr, resource, |
| 442 | &resource->handle); |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 443 | if (ret >= 0) { |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 444 | client_get(client); |
Stefan Richter | 9fb551b | 2009-10-08 00:41:10 +0200 | [diff] [blame] | 445 | schedule_if_iso_resource(resource); |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 446 | } |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 447 | spin_unlock_irqrestore(&client->lock, flags); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 448 | |
| 449 | if (ret == -EAGAIN) |
| 450 | goto retry; |
| 451 | |
| 452 | return ret < 0 ? ret : 0; |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 453 | } |
| 454 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 455 | static int release_client_resource(struct client *client, u32 handle, |
| 456 | client_resource_release_fn_t release, |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 457 | struct client_resource **return_resource) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 458 | { |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 459 | struct client_resource *resource; |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 460 | |
Stefan Richter | 3ba9498 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 461 | spin_lock_irq(&client->lock); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 462 | if (client->in_shutdown) |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 463 | resource = NULL; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 464 | else |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 465 | resource = idr_find(&client->resource_idr, handle); |
| 466 | if (resource && resource->release == release) |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 467 | idr_remove(&client->resource_idr, handle); |
Stefan Richter | 3ba9498 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 468 | spin_unlock_irq(&client->lock); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 469 | |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 470 | if (!(resource && resource->release == release)) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 471 | return -EINVAL; |
| 472 | |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 473 | if (return_resource) |
| 474 | *return_resource = resource; |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 475 | else |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 476 | resource->release(client, resource); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 477 | |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 478 | client_put(client); |
| 479 | |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 480 | return 0; |
| 481 | } |
| 482 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 483 | static void release_transaction(struct client *client, |
| 484 | struct client_resource *resource) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 485 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 486 | struct outbound_transaction_resource *r = container_of(resource, |
| 487 | struct outbound_transaction_resource, resource); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 488 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 489 | fw_cancel_transaction(client->device->card, &r->transaction); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 490 | } |
| 491 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 492 | static void complete_transaction(struct fw_card *card, int rcode, |
| 493 | void *payload, size_t length, void *data) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 494 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 495 | struct outbound_transaction_event *e = data; |
| 496 | struct fw_cdev_event_response *rsp = &e->response; |
| 497 | struct client *client = e->client; |
Kristian Høgsberg | 28cf6a0 | 2007-03-07 12:12:50 -0500 | [diff] [blame] | 498 | unsigned long flags; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 499 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 500 | if (length < rsp->length) |
| 501 | rsp->length = length; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 502 | if (rcode == RCODE_COMPLETE) |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 503 | memcpy(rsp->data, payload, rsp->length); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 504 | |
Kristian Høgsberg | 28cf6a0 | 2007-03-07 12:12:50 -0500 | [diff] [blame] | 505 | spin_lock_irqsave(&client->lock, flags); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 506 | /* |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 507 | * 1. If called while in shutdown, the idr tree must be left untouched. |
| 508 | * The idr handle will be removed and the client reference will be |
| 509 | * dropped later. |
| 510 | * 2. If the call chain was release_client_resource -> |
| 511 | * release_transaction -> complete_transaction (instead of a normal |
| 512 | * conclusion of the transaction), i.e. if this resource was already |
| 513 | * unregistered from the idr, the client reference will be dropped |
| 514 | * by release_client_resource and we must not drop it here. |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 515 | */ |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 516 | if (!client->in_shutdown && |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 517 | idr_find(&client->resource_idr, e->r.resource.handle)) { |
| 518 | idr_remove(&client->resource_idr, e->r.resource.handle); |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 519 | /* Drop the idr's reference */ |
| 520 | client_put(client); |
| 521 | } |
Kristian Høgsberg | 28cf6a0 | 2007-03-07 12:12:50 -0500 | [diff] [blame] | 522 | spin_unlock_irqrestore(&client->lock, flags); |
| 523 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 524 | rsp->type = FW_CDEV_EVENT_RESPONSE; |
| 525 | rsp->rcode = rcode; |
David Moore | 8401d92 | 2008-07-29 23:46:25 -0700 | [diff] [blame] | 526 | |
| 527 | /* |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 528 | * 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] | 529 | * data, and the read is short, preserve an extra copy of the data |
| 530 | * to stay compatible with a pre-2.6.27 bug. Since the bug is harmless |
| 531 | * for short reads and some apps depended on it, this is both safe |
| 532 | * and prudent for compatibility. |
| 533 | */ |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 534 | if (rsp->length <= sizeof(*rsp) - offsetof(typeof(*rsp), data)) |
| 535 | queue_event(client, &e->event, rsp, sizeof(*rsp), |
| 536 | rsp->data, rsp->length); |
David Moore | 8401d92 | 2008-07-29 23:46:25 -0700 | [diff] [blame] | 537 | else |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 538 | queue_event(client, &e->event, rsp, sizeof(*rsp) + rsp->length, |
David Moore | 8401d92 | 2008-07-29 23:46:25 -0700 | [diff] [blame] | 539 | NULL, 0); |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 540 | |
| 541 | /* Drop the transaction callback's reference */ |
| 542 | client_put(client); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 543 | } |
| 544 | |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 545 | static int init_request(struct client *client, |
| 546 | struct fw_cdev_send_request *request, |
| 547 | int destination_id, int speed) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 548 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 549 | struct outbound_transaction_event *e; |
Stefan Richter | 1f3125a | 2008-12-05 22:44:42 +0100 | [diff] [blame] | 550 | int ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 551 | |
Stefan Richter | 18e9b10 | 2009-03-10 21:02:21 +0100 | [diff] [blame] | 552 | if (request->tcode != TCODE_STREAM_DATA && |
| 553 | (request->length > 4096 || request->length > 512 << speed)) |
Stefan Richter | 5d3fd69 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 554 | return -EIO; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 555 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 556 | e = kmalloc(sizeof(*e) + request->length, GFP_KERNEL); |
| 557 | if (e == NULL) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 558 | return -ENOMEM; |
| 559 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 560 | e->client = client; |
| 561 | e->response.length = request->length; |
| 562 | e->response.closure = request->closure; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 563 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 564 | if (request->data && |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 565 | copy_from_user(e->response.data, |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 566 | u64_to_uptr(request->data), request->length)) { |
Stefan Richter | 1f3125a | 2008-12-05 22:44:42 +0100 | [diff] [blame] | 567 | ret = -EFAULT; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 568 | goto failed; |
Stefan Richter | 1f3125a | 2008-12-05 22:44:42 +0100 | [diff] [blame] | 569 | } |
| 570 | |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 571 | e->r.resource.release = release_transaction; |
| 572 | ret = add_client_resource(client, &e->r.resource, GFP_KERNEL); |
| 573 | if (ret < 0) |
| 574 | goto failed; |
| 575 | |
| 576 | /* Get a reference for the transaction callback */ |
| 577 | client_get(client); |
| 578 | |
| 579 | fw_send_request(client->device->card, &e->r.transaction, |
Stefan Richter | 664d801 | 2009-03-10 21:01:54 +0100 | [diff] [blame] | 580 | request->tcode, destination_id, request->generation, |
| 581 | speed, request->offset, e->response.data, |
| 582 | request->length, complete_transaction, e); |
| 583 | return 0; |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 584 | |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 585 | failed: |
| 586 | kfree(e); |
| 587 | |
| 588 | return ret; |
| 589 | } |
| 590 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 591 | static int ioctl_send_request(struct client *client, union ioctl_arg *arg) |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 592 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 593 | switch (arg->send_request.tcode) { |
Stefan Richter | 1f3125a | 2008-12-05 22:44:42 +0100 | [diff] [blame] | 594 | case TCODE_WRITE_QUADLET_REQUEST: |
| 595 | case TCODE_WRITE_BLOCK_REQUEST: |
| 596 | case TCODE_READ_QUADLET_REQUEST: |
| 597 | case TCODE_READ_BLOCK_REQUEST: |
| 598 | case TCODE_LOCK_MASK_SWAP: |
| 599 | case TCODE_LOCK_COMPARE_SWAP: |
| 600 | case TCODE_LOCK_FETCH_ADD: |
| 601 | case TCODE_LOCK_LITTLE_ADD: |
| 602 | case TCODE_LOCK_BOUNDED_ADD: |
| 603 | case TCODE_LOCK_WRAP_ADD: |
| 604 | case TCODE_LOCK_VENDOR_DEPENDENT: |
| 605 | break; |
| 606 | default: |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 607 | return -EINVAL; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 608 | } |
| 609 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 610 | return init_request(client, &arg->send_request, client->device->node_id, |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 611 | client->device->max_speed); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 612 | } |
| 613 | |
Stefan Richter | 281e203 | 2010-01-24 16:45:03 +0100 | [diff] [blame] | 614 | static inline bool is_fcp_request(struct fw_request *request) |
| 615 | { |
| 616 | return request == NULL; |
| 617 | } |
| 618 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 619 | static void release_request(struct client *client, |
| 620 | struct client_resource *resource) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 621 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 622 | struct inbound_transaction_resource *r = container_of(resource, |
| 623 | struct inbound_transaction_resource, resource); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 624 | |
Stefan Richter | 281e203 | 2010-01-24 16:45:03 +0100 | [diff] [blame] | 625 | if (is_fcp_request(r->request)) |
| 626 | kfree(r->data); |
| 627 | else |
Clemens Ladisch | db5d247 | 2009-12-24 12:05:58 +0100 | [diff] [blame] | 628 | fw_send_response(client->device->card, r->request, |
| 629 | RCODE_CONFLICT_ERROR); |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 630 | kfree(r); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 631 | } |
| 632 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 633 | static void handle_request(struct fw_card *card, struct fw_request *request, |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 634 | int tcode, int destination, int source, |
| 635 | int generation, int speed, |
| 636 | unsigned long long offset, |
| 637 | void *payload, size_t length, void *callback_data) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 638 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 639 | struct address_handler_resource *handler = callback_data; |
| 640 | struct inbound_transaction_resource *r; |
| 641 | struct inbound_transaction_event *e; |
Stefan Richter | 281e203 | 2010-01-24 16:45:03 +0100 | [diff] [blame] | 642 | void *fcp_frame = NULL; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 643 | int ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 644 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 645 | r = kmalloc(sizeof(*r), GFP_ATOMIC); |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 646 | e = kmalloc(sizeof(*e), GFP_ATOMIC); |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 647 | if (r == NULL || e == NULL) |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 648 | goto failed; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 649 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 650 | r->request = request; |
| 651 | r->data = payload; |
| 652 | r->length = length; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 653 | |
Stefan Richter | 281e203 | 2010-01-24 16:45:03 +0100 | [diff] [blame] | 654 | if (is_fcp_request(request)) { |
| 655 | /* |
| 656 | * FIXME: Let core-transaction.c manage a |
| 657 | * single reference-counted copy? |
| 658 | */ |
| 659 | fcp_frame = kmemdup(payload, length, GFP_ATOMIC); |
| 660 | if (fcp_frame == NULL) |
| 661 | goto failed; |
| 662 | |
| 663 | r->data = fcp_frame; |
| 664 | } |
| 665 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 666 | r->resource.release = release_request; |
| 667 | ret = add_client_resource(handler->client, &r->resource, GFP_ATOMIC); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 668 | if (ret < 0) |
| 669 | goto failed; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 670 | |
| 671 | e->request.type = FW_CDEV_EVENT_REQUEST; |
| 672 | e->request.tcode = tcode; |
| 673 | e->request.offset = offset; |
| 674 | e->request.length = length; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 675 | e->request.handle = r->resource.handle; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 676 | e->request.closure = handler->closure; |
| 677 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 678 | queue_event(handler->client, &e->event, |
Stefan Richter | 281e203 | 2010-01-24 16:45:03 +0100 | [diff] [blame] | 679 | &e->request, sizeof(e->request), r->data, length); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 680 | return; |
| 681 | |
| 682 | failed: |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 683 | kfree(r); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 684 | kfree(e); |
Stefan Richter | 281e203 | 2010-01-24 16:45:03 +0100 | [diff] [blame] | 685 | kfree(fcp_frame); |
| 686 | |
| 687 | if (!is_fcp_request(request)) |
Clemens Ladisch | db5d247 | 2009-12-24 12:05:58 +0100 | [diff] [blame] | 688 | fw_send_response(card, request, RCODE_CONFLICT_ERROR); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 689 | } |
| 690 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 691 | static void release_address_handler(struct client *client, |
| 692 | struct client_resource *resource) |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 693 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 694 | struct address_handler_resource *r = |
| 695 | container_of(resource, struct address_handler_resource, resource); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 696 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 697 | fw_core_remove_address_handler(&r->handler); |
| 698 | kfree(r); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 699 | } |
| 700 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 701 | static int ioctl_allocate(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 702 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 703 | struct fw_cdev_allocate *a = &arg->allocate; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 704 | struct address_handler_resource *r; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 705 | struct fw_address_region region; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 706 | int ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 707 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 708 | r = kmalloc(sizeof(*r), GFP_KERNEL); |
| 709 | if (r == NULL) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 710 | return -ENOMEM; |
| 711 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 712 | region.start = a->offset; |
| 713 | region.end = a->offset + a->length; |
| 714 | r->handler.length = a->length; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 715 | r->handler.address_callback = handle_request; |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 716 | r->handler.callback_data = r; |
| 717 | r->closure = a->closure; |
| 718 | r->client = client; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 719 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 720 | ret = fw_core_add_address_handler(&r->handler, ®ion); |
Stefan Richter | 3e0b5f0 | 2008-12-14 19:21:01 +0100 | [diff] [blame] | 721 | if (ret < 0) { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 722 | kfree(r); |
Stefan Richter | 3e0b5f0 | 2008-12-14 19:21:01 +0100 | [diff] [blame] | 723 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 724 | } |
| 725 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 726 | r->resource.release = release_address_handler; |
| 727 | ret = add_client_resource(client, &r->resource, GFP_KERNEL); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 728 | if (ret < 0) { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 729 | release_address_handler(client, &r->resource); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 730 | return ret; |
| 731 | } |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 732 | a->handle = r->resource.handle; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 733 | |
| 734 | return 0; |
| 735 | } |
| 736 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 737 | static int ioctl_deallocate(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 9472316 | 2007-03-14 17:34:55 -0400 | [diff] [blame] | 738 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 739 | return release_client_resource(client, arg->deallocate.handle, |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 740 | release_address_handler, NULL); |
Kristian Høgsberg | 9472316 | 2007-03-14 17:34:55 -0400 | [diff] [blame] | 741 | } |
| 742 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 743 | static int ioctl_send_response(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 744 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 745 | struct fw_cdev_send_response *a = &arg->send_response; |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 746 | struct client_resource *resource; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 747 | struct inbound_transaction_resource *r; |
Stefan Richter | 7e44c0b | 2009-10-08 00:39:56 +0200 | [diff] [blame] | 748 | int ret = 0; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 749 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 750 | if (release_client_resource(client, a->handle, |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 751 | release_request, &resource) < 0) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 752 | return -EINVAL; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 753 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 754 | r = container_of(resource, struct inbound_transaction_resource, |
| 755 | resource); |
Stefan Richter | 281e203 | 2010-01-24 16:45:03 +0100 | [diff] [blame] | 756 | if (is_fcp_request(r->request)) |
| 757 | goto out; |
| 758 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 759 | if (a->length < r->length) |
| 760 | r->length = a->length; |
| 761 | if (copy_from_user(r->data, u64_to_uptr(a->data), r->length)) { |
Stefan Richter | 281e203 | 2010-01-24 16:45:03 +0100 | [diff] [blame] | 762 | ret = -EFAULT; |
| 763 | kfree(r->request); |
| 764 | goto out; |
Stefan Richter | 7e44c0b | 2009-10-08 00:39:56 +0200 | [diff] [blame] | 765 | } |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 766 | fw_send_response(client->device->card, r->request, a->rcode); |
Stefan Richter | 7e44c0b | 2009-10-08 00:39:56 +0200 | [diff] [blame] | 767 | out: |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 768 | kfree(r); |
| 769 | |
Stefan Richter | 7e44c0b | 2009-10-08 00:39:56 +0200 | [diff] [blame] | 770 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 771 | } |
| 772 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 773 | static int ioctl_initiate_bus_reset(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 5371842 | 2007-03-07 12:12:42 -0500 | [diff] [blame] | 774 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 775 | return fw_core_initiate_bus_reset(client->device->card, |
| 776 | arg->initiate_bus_reset.type == FW_CDEV_SHORT_RESET); |
Kristian Høgsberg | 5371842 | 2007-03-07 12:12:42 -0500 | [diff] [blame] | 777 | } |
| 778 | |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 779 | static void release_descriptor(struct client *client, |
| 780 | struct client_resource *resource) |
| 781 | { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 782 | struct descriptor_resource *r = |
| 783 | container_of(resource, struct descriptor_resource, resource); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 784 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 785 | fw_core_remove_descriptor(&r->descriptor); |
| 786 | kfree(r); |
Kristian Høgsberg | 3964a44 | 2007-03-27 01:43:41 -0400 | [diff] [blame] | 787 | } |
| 788 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 789 | static int ioctl_add_descriptor(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 790 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 791 | struct fw_cdev_add_descriptor *a = &arg->add_descriptor; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 792 | struct descriptor_resource *r; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 793 | int ret; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 794 | |
Stefan Richter | de487da | 2009-03-10 21:00:23 +0100 | [diff] [blame] | 795 | /* Access policy: Allow this ioctl only on local nodes' device files. */ |
Stefan Richter | 9236889 | 2009-05-13 21:42:14 +0200 | [diff] [blame] | 796 | if (!client->device->is_local) |
Stefan Richter | de487da | 2009-03-10 21:00:23 +0100 | [diff] [blame] | 797 | return -ENOSYS; |
| 798 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 799 | if (a->length > 256) |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 800 | return -EINVAL; |
| 801 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 802 | r = kmalloc(sizeof(*r) + a->length * 4, GFP_KERNEL); |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 803 | if (r == NULL) |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 804 | return -ENOMEM; |
| 805 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 806 | if (copy_from_user(r->data, u64_to_uptr(a->data), a->length * 4)) { |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 807 | ret = -EFAULT; |
| 808 | goto failed; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 809 | } |
| 810 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 811 | r->descriptor.length = a->length; |
| 812 | r->descriptor.immediate = a->immediate; |
| 813 | r->descriptor.key = a->key; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 814 | r->descriptor.data = r->data; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 815 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 816 | ret = fw_core_add_descriptor(&r->descriptor); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 817 | if (ret < 0) |
| 818 | goto failed; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 819 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 820 | r->resource.release = release_descriptor; |
| 821 | ret = add_client_resource(client, &r->resource, GFP_KERNEL); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 822 | if (ret < 0) { |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 823 | fw_core_remove_descriptor(&r->descriptor); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 824 | goto failed; |
| 825 | } |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 826 | a->handle = r->resource.handle; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 827 | |
| 828 | return 0; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 829 | failed: |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 830 | kfree(r); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 831 | |
| 832 | return ret; |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 833 | } |
| 834 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 835 | static int ioctl_remove_descriptor(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 836 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 837 | return release_client_resource(client, arg->remove_descriptor.handle, |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 838 | release_descriptor, NULL); |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 839 | } |
| 840 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 841 | static void iso_callback(struct fw_iso_context *context, u32 cycle, |
| 842 | size_t header_length, void *header, void *data) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 843 | { |
| 844 | struct client *client = data; |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 845 | struct iso_interrupt_event *e; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 846 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 847 | e = kzalloc(sizeof(*e) + header_length, GFP_ATOMIC); |
| 848 | if (e == NULL) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 849 | return; |
| 850 | |
Stefan Richter | 97c18b7 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 851 | e->interrupt.type = FW_CDEV_EVENT_ISO_INTERRUPT; |
| 852 | e->interrupt.closure = client->iso_closure; |
| 853 | e->interrupt.cycle = cycle; |
| 854 | e->interrupt.header_length = header_length; |
| 855 | memcpy(e->interrupt.header, header, header_length); |
| 856 | queue_event(client, &e->event, &e->interrupt, |
| 857 | sizeof(e->interrupt) + header_length, NULL, 0); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 858 | } |
| 859 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 860 | static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 861 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 862 | struct fw_cdev_create_iso_context *a = &arg->create_iso_context; |
Kristian Høgsberg | 24315c5 | 2007-06-20 17:48:07 -0400 | [diff] [blame] | 863 | struct fw_iso_context *context; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 864 | |
Stefan Richter | fae6031 | 2008-02-20 21:10:06 +0100 | [diff] [blame] | 865 | /* We only support one context at this time. */ |
| 866 | if (client->iso_context != NULL) |
| 867 | return -EBUSY; |
| 868 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 869 | if (a->channel > 63) |
Kristian Høgsberg | 21efb3c | 2007-02-16 17:34:50 -0500 | [diff] [blame] | 870 | return -EINVAL; |
| 871 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 872 | switch (a->type) { |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 873 | case FW_ISO_CONTEXT_RECEIVE: |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 874 | if (a->header_size < 4 || (a->header_size & 3)) |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 875 | return -EINVAL; |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 876 | break; |
| 877 | |
| 878 | case FW_ISO_CONTEXT_TRANSMIT: |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 879 | if (a->speed > SCODE_3200) |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 880 | return -EINVAL; |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 881 | break; |
| 882 | |
| 883 | default: |
Kristian Høgsberg | 21efb3c | 2007-02-16 17:34:50 -0500 | [diff] [blame] | 884 | return -EINVAL; |
Kristian Høgsberg | c70dc78 | 2007-03-14 17:34:53 -0400 | [diff] [blame] | 885 | } |
| 886 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 887 | context = fw_iso_context_create(client->device->card, a->type, |
| 888 | a->channel, a->speed, a->header_size, |
| 889 | iso_callback, client); |
Kristian Høgsberg | 24315c5 | 2007-06-20 17:48:07 -0400 | [diff] [blame] | 890 | if (IS_ERR(context)) |
| 891 | return PTR_ERR(context); |
| 892 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 893 | client->iso_closure = a->closure; |
Kristian Høgsberg | 24315c5 | 2007-06-20 17:48:07 -0400 | [diff] [blame] | 894 | client->iso_context = context; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 895 | |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 896 | /* We only support one context at this time. */ |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 897 | a->handle = 0; |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 898 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 899 | return 0; |
| 900 | } |
| 901 | |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 902 | /* Macros for decoding the iso packet control header. */ |
| 903 | #define GET_PAYLOAD_LENGTH(v) ((v) & 0xffff) |
| 904 | #define GET_INTERRUPT(v) (((v) >> 16) & 0x01) |
| 905 | #define GET_SKIP(v) (((v) >> 17) & 0x01) |
Stefan Richter | 7a10034 | 2008-09-12 18:09:55 +0200 | [diff] [blame] | 906 | #define GET_TAG(v) (((v) >> 18) & 0x03) |
| 907 | #define GET_SY(v) (((v) >> 20) & 0x0f) |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 908 | #define GET_HEADER_LENGTH(v) (((v) >> 24) & 0xff) |
| 909 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 910 | static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 911 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 912 | struct fw_cdev_queue_iso *a = &arg->queue_iso; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 913 | struct fw_cdev_iso_packet __user *p, *end, *next; |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 914 | struct fw_iso_context *ctx = client->iso_context; |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 915 | unsigned long payload, buffer_end, header_length; |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 916 | u32 control; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 917 | int count; |
| 918 | struct { |
| 919 | struct fw_iso_packet packet; |
| 920 | u8 header[256]; |
| 921 | } u; |
| 922 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 923 | if (ctx == NULL || a->handle != 0) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 924 | return -EINVAL; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 925 | |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 926 | /* |
| 927 | * If the user passes a non-NULL data pointer, has mmap()'ed |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 928 | * the iso buffer, and the pointer points inside the buffer, |
| 929 | * we setup the payload pointers accordingly. Otherwise we |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 930 | * set them both to 0, which will still let packets with |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 931 | * payload_length == 0 through. In other words, if no packets |
| 932 | * use the indirect payload, the iso buffer need not be mapped |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 933 | * and the a->data pointer is ignored. |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 934 | */ |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 935 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 936 | payload = (unsigned long)a->data - client->vm_start; |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 937 | buffer_end = client->buffer.page_count << PAGE_SHIFT; |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 938 | if (a->data == 0 || client->buffer.pages == NULL || |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 939 | payload >= buffer_end) { |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 940 | payload = 0; |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 941 | buffer_end = 0; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 942 | } |
| 943 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 944 | p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(a->packets); |
Al Viro | 1ccc914 | 2007-10-14 19:34:40 +0100 | [diff] [blame] | 945 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 946 | if (!access_ok(VERIFY_READ, p, a->size)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 947 | return -EFAULT; |
| 948 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 949 | end = (void __user *)p + a->size; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 950 | count = 0; |
| 951 | while (p < end) { |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 952 | if (get_user(control, &p->control)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 953 | return -EFAULT; |
Kristian Høgsberg | 1ca31ae | 2007-05-31 11:16:43 -0400 | [diff] [blame] | 954 | u.packet.payload_length = GET_PAYLOAD_LENGTH(control); |
| 955 | u.packet.interrupt = GET_INTERRUPT(control); |
| 956 | u.packet.skip = GET_SKIP(control); |
| 957 | u.packet.tag = GET_TAG(control); |
| 958 | u.packet.sy = GET_SY(control); |
| 959 | u.packet.header_length = GET_HEADER_LENGTH(control); |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 960 | |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 961 | if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) { |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 962 | header_length = u.packet.header_length; |
| 963 | } else { |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 964 | /* |
| 965 | * We require that header_length is a multiple of |
| 966 | * the fixed header size, ctx->header_size. |
| 967 | */ |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 968 | if (ctx->header_size == 0) { |
| 969 | if (u.packet.header_length > 0) |
| 970 | return -EINVAL; |
| 971 | } else if (u.packet.header_length % ctx->header_size != 0) { |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 972 | return -EINVAL; |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 973 | } |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 974 | header_length = 0; |
| 975 | } |
| 976 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 977 | next = (struct fw_cdev_iso_packet __user *) |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 978 | &p->header[header_length / 4]; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 979 | if (next > end) |
| 980 | return -EINVAL; |
| 981 | if (__copy_from_user |
Kristian Høgsberg | 295e3fe | 2007-02-16 17:34:40 -0500 | [diff] [blame] | 982 | (u.packet.header, p->header, header_length)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 983 | return -EFAULT; |
Kristian Høgsberg | 98b6cbe | 2007-02-16 17:34:51 -0500 | [diff] [blame] | 984 | if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT && |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 985 | u.packet.header_length + u.packet.payload_length > 0) |
| 986 | return -EINVAL; |
Kristian Høgsberg | ef370ee | 2007-03-28 20:46:23 +0200 | [diff] [blame] | 987 | if (payload + u.packet.payload_length > buffer_end) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 988 | return -EINVAL; |
| 989 | |
Kristian Høgsberg | 9b32d5f | 2007-02-16 17:34:44 -0500 | [diff] [blame] | 990 | if (fw_iso_context_queue(ctx, &u.packet, |
| 991 | &client->buffer, payload)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 992 | break; |
| 993 | |
| 994 | p = next; |
| 995 | payload += u.packet.payload_length; |
| 996 | count++; |
| 997 | } |
| 998 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 999 | a->size -= uptr_to_u64(p) - a->packets; |
| 1000 | a->packets = uptr_to_u64(p); |
| 1001 | a->data = client->vm_start + payload; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1002 | |
| 1003 | return count; |
| 1004 | } |
| 1005 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1006 | static int ioctl_start_iso(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1007 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1008 | struct fw_cdev_start_iso *a = &arg->start_iso; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1009 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1010 | if (client->iso_context == NULL || a->handle != 0) |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 1011 | return -EINVAL; |
Stefan Richter | fae6031 | 2008-02-20 21:10:06 +0100 | [diff] [blame] | 1012 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1013 | if (client->iso_context->type == FW_ISO_CONTEXT_RECEIVE && |
| 1014 | (a->tags == 0 || a->tags > 15 || a->sync > 15)) |
| 1015 | return -EINVAL; |
Kristian Høgsberg | eb0306e | 2007-03-14 17:34:54 -0400 | [diff] [blame] | 1016 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1017 | return fw_iso_context_start(client->iso_context, |
| 1018 | a->cycle, a->sync, a->tags); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1019 | } |
| 1020 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1021 | static int ioctl_stop_iso(struct client *client, union ioctl_arg *arg) |
Kristian Høgsberg | b829566 | 2007-02-16 17:34:42 -0500 | [diff] [blame] | 1022 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1023 | struct fw_cdev_stop_iso *a = &arg->stop_iso; |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 1024 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1025 | if (client->iso_context == NULL || a->handle != 0) |
Kristian Høgsberg | abaa574 | 2007-04-30 15:03:14 -0400 | [diff] [blame] | 1026 | return -EINVAL; |
| 1027 | |
Kristian Høgsberg | b829566 | 2007-02-16 17:34:42 -0500 | [diff] [blame] | 1028 | return fw_iso_context_stop(client->iso_context); |
| 1029 | } |
| 1030 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1031 | static int ioctl_get_cycle_timer2(struct client *client, union ioctl_arg *arg) |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 1032 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1033 | struct fw_cdev_get_cycle_timer2 *a = &arg->get_cycle_timer2; |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 1034 | struct fw_card *card = client->device->card; |
Stefan Richter | abfe5a0 | 2010-02-20 12:13:49 +0100 | [diff] [blame] | 1035 | struct timespec ts = {0, 0}; |
Stefan Richter | 4a9bde9 | 2010-02-20 22:24:43 +0100 | [diff] [blame] | 1036 | u32 cycle_time; |
Stefan Richter | abfe5a0 | 2010-02-20 12:13:49 +0100 | [diff] [blame] | 1037 | int ret = 0; |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 1038 | |
Stefan Richter | 4a9bde9 | 2010-02-20 22:24:43 +0100 | [diff] [blame] | 1039 | local_irq_disable(); |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 1040 | |
Stefan Richter | 168cf9a | 2010-02-14 18:49:18 +0100 | [diff] [blame] | 1041 | cycle_time = card->driver->get_cycle_time(card); |
Stefan Richter | abfe5a0 | 2010-02-20 12:13:49 +0100 | [diff] [blame] | 1042 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1043 | switch (a->clk_id) { |
Stefan Richter | abfe5a0 | 2010-02-20 12:13:49 +0100 | [diff] [blame] | 1044 | case CLOCK_REALTIME: getnstimeofday(&ts); break; |
| 1045 | case CLOCK_MONOTONIC: do_posix_clock_monotonic_gettime(&ts); break; |
| 1046 | case CLOCK_MONOTONIC_RAW: getrawmonotonic(&ts); break; |
| 1047 | default: |
| 1048 | ret = -EINVAL; |
| 1049 | } |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 1050 | |
Stefan Richter | 4a9bde9 | 2010-02-20 22:24:43 +0100 | [diff] [blame] | 1051 | local_irq_enable(); |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 1052 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1053 | a->tv_sec = ts.tv_sec; |
| 1054 | a->tv_nsec = ts.tv_nsec; |
| 1055 | a->cycle_timer = cycle_time; |
Stefan Richter | abfe5a0 | 2010-02-20 12:13:49 +0100 | [diff] [blame] | 1056 | |
| 1057 | return ret; |
| 1058 | } |
| 1059 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1060 | static int ioctl_get_cycle_timer(struct client *client, union ioctl_arg *arg) |
Stefan Richter | abfe5a0 | 2010-02-20 12:13:49 +0100 | [diff] [blame] | 1061 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1062 | struct fw_cdev_get_cycle_timer *a = &arg->get_cycle_timer; |
Stefan Richter | abfe5a0 | 2010-02-20 12:13:49 +0100 | [diff] [blame] | 1063 | struct fw_cdev_get_cycle_timer2 ct2; |
| 1064 | |
| 1065 | ct2.clk_id = CLOCK_REALTIME; |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1066 | ioctl_get_cycle_timer2(client, (union ioctl_arg *)&ct2); |
Stefan Richter | abfe5a0 | 2010-02-20 12:13:49 +0100 | [diff] [blame] | 1067 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1068 | a->local_time = ct2.tv_sec * USEC_PER_SEC + ct2.tv_nsec / NSEC_PER_USEC; |
| 1069 | a->cycle_timer = ct2.cycle_timer; |
Stefan Richter | 4a9bde9 | 2010-02-20 22:24:43 +0100 | [diff] [blame] | 1070 | |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 1071 | return 0; |
| 1072 | } |
| 1073 | |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1074 | static void iso_resource_work(struct work_struct *work) |
| 1075 | { |
| 1076 | struct iso_resource_event *e; |
| 1077 | struct iso_resource *r = |
| 1078 | container_of(work, struct iso_resource, work.work); |
| 1079 | struct client *client = r->client; |
| 1080 | int generation, channel, bandwidth, todo; |
| 1081 | bool skip, free, success; |
| 1082 | |
| 1083 | spin_lock_irq(&client->lock); |
| 1084 | generation = client->device->generation; |
| 1085 | todo = r->todo; |
| 1086 | /* Allow 1000ms grace period for other reallocations. */ |
| 1087 | if (todo == ISO_RES_ALLOC && |
| 1088 | time_is_after_jiffies(client->device->card->reset_jiffies + HZ)) { |
Stefan Richter | 9fb551b | 2009-10-08 00:41:10 +0200 | [diff] [blame] | 1089 | schedule_iso_resource(r, DIV_ROUND_UP(HZ, 3)); |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1090 | skip = true; |
| 1091 | } else { |
| 1092 | /* We could be called twice within the same generation. */ |
| 1093 | skip = todo == ISO_RES_REALLOC && |
| 1094 | r->generation == generation; |
| 1095 | } |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1096 | free = todo == ISO_RES_DEALLOC || |
| 1097 | todo == ISO_RES_ALLOC_ONCE || |
| 1098 | todo == ISO_RES_DEALLOC_ONCE; |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1099 | r->generation = generation; |
| 1100 | spin_unlock_irq(&client->lock); |
| 1101 | |
| 1102 | if (skip) |
| 1103 | goto out; |
| 1104 | |
| 1105 | bandwidth = r->bandwidth; |
| 1106 | |
| 1107 | fw_iso_resource_manage(client->device->card, generation, |
| 1108 | r->channels, &channel, &bandwidth, |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1109 | todo == ISO_RES_ALLOC || |
| 1110 | todo == ISO_RES_REALLOC || |
Stefan Richter | 6fdc037 | 2009-06-20 13:23:59 +0200 | [diff] [blame] | 1111 | todo == ISO_RES_ALLOC_ONCE, |
| 1112 | r->transaction_data); |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1113 | /* |
| 1114 | * Is this generation outdated already? As long as this resource sticks |
| 1115 | * in the idr, it will be scheduled again for a newer generation or at |
| 1116 | * shutdown. |
| 1117 | */ |
| 1118 | if (channel == -EAGAIN && |
| 1119 | (todo == ISO_RES_ALLOC || todo == ISO_RES_REALLOC)) |
| 1120 | goto out; |
| 1121 | |
| 1122 | success = channel >= 0 || bandwidth > 0; |
| 1123 | |
| 1124 | spin_lock_irq(&client->lock); |
| 1125 | /* |
| 1126 | * Transit from allocation to reallocation, except if the client |
| 1127 | * requested deallocation in the meantime. |
| 1128 | */ |
| 1129 | if (r->todo == ISO_RES_ALLOC) |
| 1130 | r->todo = ISO_RES_REALLOC; |
| 1131 | /* |
| 1132 | * Allocation or reallocation failure? Pull this resource out of the |
| 1133 | * idr and prepare for deletion, unless the client is shutting down. |
| 1134 | */ |
| 1135 | if (r->todo == ISO_RES_REALLOC && !success && |
| 1136 | !client->in_shutdown && |
| 1137 | idr_find(&client->resource_idr, r->resource.handle)) { |
| 1138 | idr_remove(&client->resource_idr, r->resource.handle); |
| 1139 | client_put(client); |
| 1140 | free = true; |
| 1141 | } |
| 1142 | spin_unlock_irq(&client->lock); |
| 1143 | |
| 1144 | if (todo == ISO_RES_ALLOC && channel >= 0) |
Stefan Richter | 5d9cb7d | 2009-01-08 23:07:40 +0100 | [diff] [blame] | 1145 | r->channels = 1ULL << channel; |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1146 | |
| 1147 | if (todo == ISO_RES_REALLOC && success) |
| 1148 | goto out; |
| 1149 | |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1150 | if (todo == ISO_RES_ALLOC || todo == ISO_RES_ALLOC_ONCE) { |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1151 | e = r->e_alloc; |
| 1152 | r->e_alloc = NULL; |
| 1153 | } else { |
| 1154 | e = r->e_dealloc; |
| 1155 | r->e_dealloc = NULL; |
| 1156 | } |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 1157 | e->iso_resource.handle = r->resource.handle; |
| 1158 | e->iso_resource.channel = channel; |
| 1159 | e->iso_resource.bandwidth = bandwidth; |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1160 | |
| 1161 | queue_event(client, &e->event, |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 1162 | &e->iso_resource, sizeof(e->iso_resource), NULL, 0); |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1163 | |
| 1164 | if (free) { |
| 1165 | cancel_delayed_work(&r->work); |
| 1166 | kfree(r->e_alloc); |
| 1167 | kfree(r->e_dealloc); |
| 1168 | kfree(r); |
| 1169 | } |
| 1170 | out: |
| 1171 | client_put(client); |
| 1172 | } |
| 1173 | |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1174 | static void release_iso_resource(struct client *client, |
| 1175 | struct client_resource *resource) |
| 1176 | { |
| 1177 | struct iso_resource *r = |
| 1178 | container_of(resource, struct iso_resource, resource); |
| 1179 | |
| 1180 | spin_lock_irq(&client->lock); |
| 1181 | r->todo = ISO_RES_DEALLOC; |
Stefan Richter | 9fb551b | 2009-10-08 00:41:10 +0200 | [diff] [blame] | 1182 | schedule_iso_resource(r, 0); |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1183 | spin_unlock_irq(&client->lock); |
| 1184 | } |
| 1185 | |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1186 | static int init_iso_resource(struct client *client, |
| 1187 | struct fw_cdev_allocate_iso_resource *request, int todo) |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1188 | { |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1189 | struct iso_resource_event *e1, *e2; |
| 1190 | struct iso_resource *r; |
| 1191 | int ret; |
| 1192 | |
| 1193 | if ((request->channels == 0 && request->bandwidth == 0) || |
| 1194 | request->bandwidth > BANDWIDTH_AVAILABLE_INITIAL || |
| 1195 | request->bandwidth < 0) |
| 1196 | return -EINVAL; |
| 1197 | |
| 1198 | r = kmalloc(sizeof(*r), GFP_KERNEL); |
| 1199 | e1 = kmalloc(sizeof(*e1), GFP_KERNEL); |
| 1200 | e2 = kmalloc(sizeof(*e2), GFP_KERNEL); |
| 1201 | if (r == NULL || e1 == NULL || e2 == NULL) { |
| 1202 | ret = -ENOMEM; |
| 1203 | goto fail; |
| 1204 | } |
| 1205 | |
| 1206 | INIT_DELAYED_WORK(&r->work, iso_resource_work); |
| 1207 | r->client = client; |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1208 | r->todo = todo; |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1209 | r->generation = -1; |
| 1210 | r->channels = request->channels; |
| 1211 | r->bandwidth = request->bandwidth; |
| 1212 | r->e_alloc = e1; |
| 1213 | r->e_dealloc = e2; |
| 1214 | |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 1215 | e1->iso_resource.closure = request->closure; |
| 1216 | e1->iso_resource.type = FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED; |
| 1217 | e2->iso_resource.closure = request->closure; |
| 1218 | e2->iso_resource.type = FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED; |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1219 | |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1220 | if (todo == ISO_RES_ALLOC) { |
| 1221 | r->resource.release = release_iso_resource; |
| 1222 | ret = add_client_resource(client, &r->resource, GFP_KERNEL); |
Stefan Richter | 81610b8 | 2009-01-11 13:44:46 +0100 | [diff] [blame] | 1223 | if (ret < 0) |
| 1224 | goto fail; |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1225 | } else { |
| 1226 | r->resource.release = NULL; |
| 1227 | r->resource.handle = -1; |
Stefan Richter | 9fb551b | 2009-10-08 00:41:10 +0200 | [diff] [blame] | 1228 | schedule_iso_resource(r, 0); |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1229 | } |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1230 | request->handle = r->resource.handle; |
| 1231 | |
| 1232 | return 0; |
| 1233 | fail: |
| 1234 | kfree(r); |
| 1235 | kfree(e1); |
| 1236 | kfree(e2); |
| 1237 | |
| 1238 | return ret; |
| 1239 | } |
| 1240 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1241 | static int ioctl_allocate_iso_resource(struct client *client, |
| 1242 | union ioctl_arg *arg) |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1243 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1244 | return init_iso_resource(client, |
| 1245 | &arg->allocate_iso_resource, ISO_RES_ALLOC); |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1246 | } |
| 1247 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1248 | static int ioctl_deallocate_iso_resource(struct client *client, |
| 1249 | union ioctl_arg *arg) |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1250 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1251 | return release_client_resource(client, |
| 1252 | arg->deallocate.handle, release_iso_resource, NULL); |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1253 | } |
| 1254 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1255 | static int ioctl_allocate_iso_resource_once(struct client *client, |
| 1256 | union ioctl_arg *arg) |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1257 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1258 | return init_iso_resource(client, |
| 1259 | &arg->allocate_iso_resource, ISO_RES_ALLOC_ONCE); |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1260 | } |
| 1261 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1262 | static int ioctl_deallocate_iso_resource_once(struct client *client, |
| 1263 | union ioctl_arg *arg) |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1264 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1265 | return init_iso_resource(client, |
| 1266 | &arg->allocate_iso_resource, ISO_RES_DEALLOC_ONCE); |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1267 | } |
| 1268 | |
Stefan Richter | c8a2590 | 2009-03-10 20:59:16 +0100 | [diff] [blame] | 1269 | /* |
| 1270 | * Returns a speed code: Maximum speed to or from this device, |
| 1271 | * limited by the device's link speed, the local node's link speed, |
| 1272 | * and all PHY port speeds between the two links. |
| 1273 | */ |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1274 | static int ioctl_get_speed(struct client *client, union ioctl_arg *arg) |
Stefan Richter | 33580a3 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1275 | { |
Stefan Richter | c8a2590 | 2009-03-10 20:59:16 +0100 | [diff] [blame] | 1276 | return client->device->max_speed; |
Stefan Richter | 33580a3 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1277 | } |
| 1278 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1279 | static int ioctl_send_broadcast_request(struct client *client, |
| 1280 | union ioctl_arg *arg) |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1281 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1282 | struct fw_cdev_send_request *a = &arg->send_request; |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1283 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1284 | switch (a->tcode) { |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1285 | case TCODE_WRITE_QUADLET_REQUEST: |
| 1286 | case TCODE_WRITE_BLOCK_REQUEST: |
| 1287 | break; |
| 1288 | default: |
| 1289 | return -EINVAL; |
| 1290 | } |
| 1291 | |
Stefan Richter | 1566f3d | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1292 | /* Security policy: Only allow accesses to Units Space. */ |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1293 | if (a->offset < CSR_REGISTER_BASE + CSR_CONFIG_ROM_END) |
Stefan Richter | 1566f3d | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1294 | return -EACCES; |
| 1295 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1296 | return init_request(client, a, LOCAL_BUS | 0x3f, SCODE_100); |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1297 | } |
| 1298 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1299 | static int ioctl_send_stream_packet(struct client *client, union ioctl_arg *arg) |
Jay Fenlason | f8c2287 | 2009-03-05 19:08:40 +0100 | [diff] [blame] | 1300 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1301 | struct fw_cdev_send_stream_packet *a = &arg->send_stream_packet; |
Stefan Richter | 18e9b10 | 2009-03-10 21:02:21 +0100 | [diff] [blame] | 1302 | struct fw_cdev_send_request request; |
| 1303 | int dest; |
Jay Fenlason | f8c2287 | 2009-03-05 19:08:40 +0100 | [diff] [blame] | 1304 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1305 | if (a->speed > client->device->card->link_speed || |
| 1306 | a->length > 1024 << a->speed) |
Stefan Richter | 18e9b10 | 2009-03-10 21:02:21 +0100 | [diff] [blame] | 1307 | return -EIO; |
Jay Fenlason | f8c2287 | 2009-03-05 19:08:40 +0100 | [diff] [blame] | 1308 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1309 | if (a->tag > 3 || a->channel > 63 || a->sy > 15) |
Stefan Richter | 18e9b10 | 2009-03-10 21:02:21 +0100 | [diff] [blame] | 1310 | return -EINVAL; |
| 1311 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1312 | dest = fw_stream_packet_destination_id(a->tag, a->channel, a->sy); |
Stefan Richter | 18e9b10 | 2009-03-10 21:02:21 +0100 | [diff] [blame] | 1313 | request.tcode = TCODE_STREAM_DATA; |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1314 | request.length = a->length; |
| 1315 | request.closure = a->closure; |
| 1316 | request.data = a->data; |
| 1317 | request.generation = a->generation; |
Stefan Richter | 18e9b10 | 2009-03-10 21:02:21 +0100 | [diff] [blame] | 1318 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1319 | return init_request(client, &request, dest, a->speed); |
Jay Fenlason | f8c2287 | 2009-03-05 19:08:40 +0100 | [diff] [blame] | 1320 | } |
| 1321 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1322 | static int (* const ioctl_handlers[])(struct client *, union ioctl_arg *) = { |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1323 | ioctl_get_info, |
| 1324 | ioctl_send_request, |
| 1325 | ioctl_allocate, |
| 1326 | ioctl_deallocate, |
| 1327 | ioctl_send_response, |
| 1328 | ioctl_initiate_bus_reset, |
| 1329 | ioctl_add_descriptor, |
| 1330 | ioctl_remove_descriptor, |
| 1331 | ioctl_create_iso_context, |
| 1332 | ioctl_queue_iso, |
| 1333 | ioctl_start_iso, |
| 1334 | ioctl_stop_iso, |
Stefan Richter | a64408b | 2007-09-29 10:41:58 +0200 | [diff] [blame] | 1335 | ioctl_get_cycle_timer, |
Jay Fenlason, Stefan Richter | b1bda4c | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1336 | ioctl_allocate_iso_resource, |
| 1337 | ioctl_deallocate_iso_resource, |
Stefan Richter | 1ec3c02 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1338 | ioctl_allocate_iso_resource_once, |
| 1339 | ioctl_deallocate_iso_resource_once, |
Stefan Richter | 33580a3 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1340 | ioctl_get_speed, |
Jay Fenlason, Stefan Richter | acfe833 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1341 | ioctl_send_broadcast_request, |
Jay Fenlason | f8c2287 | 2009-03-05 19:08:40 +0100 | [diff] [blame] | 1342 | ioctl_send_stream_packet, |
Stefan Richter | abfe5a0 | 2010-02-20 12:13:49 +0100 | [diff] [blame] | 1343 | ioctl_get_cycle_timer2, |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1344 | }; |
| 1345 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 1346 | static int dispatch_ioctl(struct client *client, |
| 1347 | unsigned int cmd, void __user *arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1348 | { |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1349 | union ioctl_arg buffer; |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1350 | int ret; |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1351 | |
Stefan Richter | 6458229 | 2010-02-21 17:56:42 +0100 | [diff] [blame] | 1352 | if (fw_device_is_shutdown(client->device)) |
| 1353 | return -ENODEV; |
| 1354 | |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1355 | if (_IOC_TYPE(cmd) != '#' || |
| 1356 | _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers)) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1357 | return -EINVAL; |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1358 | |
| 1359 | if (_IOC_DIR(cmd) & _IOC_WRITE) { |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 1360 | if (_IOC_SIZE(cmd) > sizeof(buffer) || |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1361 | copy_from_user(&buffer, arg, _IOC_SIZE(cmd))) |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1362 | return -EFAULT; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1363 | } |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1364 | |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1365 | ret = ioctl_handlers[_IOC_NR(cmd)](client, &buffer); |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1366 | if (ret < 0) |
| 1367 | return ret; |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1368 | |
| 1369 | if (_IOC_DIR(cmd) & _IOC_READ) { |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 1370 | if (_IOC_SIZE(cmd) > sizeof(buffer) || |
Stefan Richter | 6e95dea | 2010-02-21 17:56:21 +0100 | [diff] [blame] | 1371 | copy_to_user(arg, &buffer, _IOC_SIZE(cmd))) |
Kristian Høgsberg | 4f25922 | 2007-04-30 15:03:13 -0400 | [diff] [blame] | 1372 | return -EFAULT; |
| 1373 | } |
| 1374 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1375 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1376 | } |
| 1377 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 1378 | static long fw_device_op_ioctl(struct file *file, |
| 1379 | unsigned int cmd, unsigned long arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1380 | { |
Stefan Richter | 6458229 | 2010-02-21 17:56:42 +0100 | [diff] [blame] | 1381 | return dispatch_ioctl(file->private_data, cmd, (void __user *)arg); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1382 | } |
| 1383 | |
| 1384 | #ifdef CONFIG_COMPAT |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 1385 | static long fw_device_op_compat_ioctl(struct file *file, |
| 1386 | unsigned int cmd, unsigned long arg) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1387 | { |
Stefan Richter | 6458229 | 2010-02-21 17:56:42 +0100 | [diff] [blame] | 1388 | return dispatch_ioctl(file->private_data, cmd, compat_ptr(arg)); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1389 | } |
| 1390 | #endif |
| 1391 | |
| 1392 | static int fw_device_op_mmap(struct file *file, struct vm_area_struct *vma) |
| 1393 | { |
| 1394 | struct client *client = file->private_data; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1395 | enum dma_data_direction direction; |
| 1396 | unsigned long size; |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1397 | int page_count, ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1398 | |
Jay Fenlason | 551f4cb | 2008-05-16 11:15:23 -0400 | [diff] [blame] | 1399 | if (fw_device_is_shutdown(client->device)) |
| 1400 | return -ENODEV; |
| 1401 | |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1402 | /* FIXME: We could support multiple buffers, but we don't. */ |
| 1403 | if (client->buffer.pages != NULL) |
| 1404 | return -EBUSY; |
| 1405 | |
| 1406 | if (!(vma->vm_flags & VM_SHARED)) |
| 1407 | return -EINVAL; |
| 1408 | |
| 1409 | if (vma->vm_start & ~PAGE_MASK) |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1410 | return -EINVAL; |
| 1411 | |
| 1412 | client->vm_start = vma->vm_start; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1413 | size = vma->vm_end - vma->vm_start; |
| 1414 | page_count = size >> PAGE_SHIFT; |
| 1415 | if (size & ~PAGE_MASK) |
| 1416 | return -EINVAL; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1417 | |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1418 | if (vma->vm_flags & VM_WRITE) |
| 1419 | direction = DMA_TO_DEVICE; |
| 1420 | else |
| 1421 | direction = DMA_FROM_DEVICE; |
| 1422 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1423 | ret = fw_iso_buffer_init(&client->buffer, client->device->card, |
| 1424 | page_count, direction); |
| 1425 | if (ret < 0) |
| 1426 | return ret; |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1427 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1428 | ret = fw_iso_buffer_map(&client->buffer, vma); |
| 1429 | if (ret < 0) |
Kristian Høgsberg | 9aad812 | 2007-02-16 17:34:38 -0500 | [diff] [blame] | 1430 | fw_iso_buffer_destroy(&client->buffer, client->device->card); |
| 1431 | |
Stefan Richter | 2dbd7d7 | 2008-12-14 21:45:45 +0100 | [diff] [blame] | 1432 | return ret; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1433 | } |
| 1434 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1435 | static int shutdown_resource(int id, void *p, void *data) |
| 1436 | { |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 1437 | struct client_resource *resource = p; |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1438 | struct client *client = data; |
| 1439 | |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 1440 | resource->release(client, resource); |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1441 | client_put(client); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1442 | |
| 1443 | return 0; |
| 1444 | } |
| 1445 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1446 | static int fw_device_op_release(struct inode *inode, struct file *file) |
| 1447 | { |
| 1448 | struct client *client = file->private_data; |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 1449 | struct event *event, *next_event; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1450 | |
Stefan Richter | 97811e3 | 2008-12-14 19:19:23 +0100 | [diff] [blame] | 1451 | mutex_lock(&client->device->client_list_mutex); |
| 1452 | list_del(&client->link); |
| 1453 | mutex_unlock(&client->device->client_list_mutex); |
| 1454 | |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1455 | if (client->iso_context) |
| 1456 | fw_iso_context_destroy(client->iso_context); |
| 1457 | |
Stefan Richter | 36a755c | 2009-01-05 20:28:10 +0100 | [diff] [blame] | 1458 | if (client->buffer.pages) |
| 1459 | fw_iso_buffer_destroy(&client->buffer, client->device->card); |
| 1460 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1461 | /* Freeze client->resource_idr and client->event_list */ |
Stefan Richter | 3ba9498 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1462 | spin_lock_irq(&client->lock); |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1463 | client->in_shutdown = true; |
Stefan Richter | 3ba9498 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1464 | spin_unlock_irq(&client->lock); |
Kristian Høgsberg | 66dea3e | 2007-03-28 21:26:42 +0200 | [diff] [blame] | 1465 | |
Jay Fenlason | 45ee319 | 2008-12-21 16:47:17 +0100 | [diff] [blame] | 1466 | idr_for_each(&client->resource_idr, shutdown_resource, client); |
| 1467 | idr_remove_all(&client->resource_idr); |
| 1468 | idr_destroy(&client->resource_idr); |
Kristian Høgsberg | 28cf6a0 | 2007-03-07 12:12:50 -0500 | [diff] [blame] | 1469 | |
Stefan Richter | e21fcf7 | 2009-10-08 00:41:38 +0200 | [diff] [blame] | 1470 | list_for_each_entry_safe(event, next_event, &client->event_list, link) |
| 1471 | kfree(event); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1472 | |
Stefan Richter | fb44303 | 2009-01-04 16:23:29 +0100 | [diff] [blame] | 1473 | client_put(client); |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1474 | |
| 1475 | return 0; |
| 1476 | } |
| 1477 | |
| 1478 | static unsigned int fw_device_op_poll(struct file *file, poll_table * pt) |
| 1479 | { |
| 1480 | struct client *client = file->private_data; |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 1481 | unsigned int mask = 0; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1482 | |
| 1483 | poll_wait(file, &client->wait, pt); |
| 1484 | |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 1485 | if (fw_device_is_shutdown(client->device)) |
| 1486 | mask |= POLLHUP | POLLERR; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1487 | if (!list_empty(&client->event_list)) |
Kristian Høgsberg | 2603bf2 | 2007-03-07 12:12:48 -0500 | [diff] [blame] | 1488 | mask |= POLLIN | POLLRDNORM; |
| 1489 | |
| 1490 | return mask; |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1491 | } |
| 1492 | |
Stefan Richter | 21ebcd1 | 2007-01-14 15:29:07 +0100 | [diff] [blame] | 1493 | const struct file_operations fw_device_ops = { |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1494 | .owner = THIS_MODULE, |
| 1495 | .open = fw_device_op_open, |
| 1496 | .read = fw_device_op_read, |
| 1497 | .unlocked_ioctl = fw_device_op_ioctl, |
| 1498 | .poll = fw_device_op_poll, |
| 1499 | .release = fw_device_op_release, |
| 1500 | .mmap = fw_device_op_mmap, |
| 1501 | |
| 1502 | #ifdef CONFIG_COMPAT |
Stefan Richter | 5af4e5e | 2007-01-21 20:45:32 +0100 | [diff] [blame] | 1503 | .compat_ioctl = fw_device_op_compat_ioctl, |
Kristian Høgsberg | 19a15b9 | 2006-12-19 19:58:31 -0500 | [diff] [blame] | 1504 | #endif |
| 1505 | }; |