drivers/bluetooth/btmrvl_debugfs.c

   1 /**
   2  * Marvell Bluetooth driver: debugfs related functions
   3  *
   4  * Copyright (C) 2009, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  *
  15  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  18  * this warranty disclaimer.
  19  **/
  20
  21 #include <linux/debugfs.h>
  22 #include <linux/slab.h>
  23
  24 #include <net/bluetooth/bluetooth.h>
  25 #include <net/bluetooth/hci_core.h>
  26
  27 #include "btmrvl_drv.h"
  28
  29 struct btmrvl_debugfs_data {
  30         struct dentry *config_dir;
  31         struct dentry *status_dir;
  32
  33         /* config */
  34         struct dentry *psmode;
  35         struct dentry *pscmd;
  36         struct dentry *hsmode;
  37         struct dentry *hscmd;
  38         struct dentry *gpiogap;
  39         struct dentry *hscfgcmd;
  40
  41         /* status */
  42         struct dentry *curpsmode;
  43         struct dentry *hsstate;
  44         struct dentry *psstate;
  45         struct dentry *txdnldready;
  46 };
  47
  48 static int btmrvl_open_generic(struct inode *inode, struct file *file)
  49 {
  50         file->private_data = inode->i_private;
  51         return 0;
  52 }
  53
  54 static ssize_t btmrvl_hscfgcmd_write(struct file *file,
  55                         const char __user *ubuf, size_t count, loff_t *ppos)
  56 {
  57         struct btmrvl_private *priv = file->private_data;
  58         char buf[16];
  59         long result, ret;
  60
  61         memset(buf, 0, sizeof(buf));
  62
  63         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
  64                 return -EFAULT;
  65
  66         ret = strict_strtol(buf, 10, &result);
  67
  68         priv->btmrvl_dev.hscfgcmd = result;
  69
  70         if (priv->btmrvl_dev.hscfgcmd) {
  71                 btmrvl_prepare_command(priv);
  72                 wake_up_interruptible(&priv->main_thread.wait_q);
  73         }
  74
  75         return count;
  76 }
  77
  78 static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
  79                                                 size_t count, loff_t *ppos)
  80 {
  81         struct btmrvl_private *priv = file->private_data;
  82         char buf[16];
  83         int ret;
  84
  85         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
  86                                                 priv->btmrvl_dev.hscfgcmd);
  87
  88         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
  89 }
  90
  91 static const struct file_operations btmrvl_hscfgcmd_fops = {
  92         .read   = btmrvl_hscfgcmd_read,
  93         .write  = btmrvl_hscfgcmd_write,
  94         .open   = btmrvl_open_generic,
  95 };
  96
  97 static ssize_t btmrvl_psmode_write(struct file *file, const char __user *ubuf,
  98                                                 size_t count, loff_t *ppos)
  99 {
 100         struct btmrvl_private *priv = file->private_data;
 101         char buf[16];
 102         long result, ret;
 103
 104         memset(buf, 0, sizeof(buf));
 105
 106         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 107                 return -EFAULT;
 108
 109         ret = strict_strtol(buf, 10, &result);
 110
 111         priv->btmrvl_dev.psmode = result;
 112
 113         return count;
 114 }
 115
 116 static ssize_t btmrvl_psmode_read(struct file *file, char __user *userbuf,
 117                                                 size_t count, loff_t *ppos)
 118 {
 119         struct btmrvl_private *priv = file->private_data;
 120         char buf[16];
 121         int ret;
 122
 123         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
 124                                                 priv->btmrvl_dev.psmode);
 125
 126         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 127 }
 128
 129 static const struct file_operations btmrvl_psmode_fops = {
 130         .read   = btmrvl_psmode_read,
 131         .write  = btmrvl_psmode_write,
 132         .open   = btmrvl_open_generic,
 133 };
 134
 135 static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
 136                                                 size_t count, loff_t *ppos)
 137 {
 138         struct btmrvl_private *priv = file->private_data;
 139         char buf[16];
 140         long result, ret;
 141
 142         memset(buf, 0, sizeof(buf));
 143
 144         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 145                 return -EFAULT;
 146
 147         ret = strict_strtol(buf, 10, &result);
 148
 149         priv->btmrvl_dev.pscmd = result;
 150
 151         if (priv->btmrvl_dev.pscmd) {
 152                 btmrvl_prepare_command(priv);
 153                 wake_up_interruptible(&priv->main_thread.wait_q);
 154         }
 155
 156         return count;
 157
 158 }
 159
 160 static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
 161                                                 size_t count, loff_t *ppos)
 162 {
 163         struct btmrvl_private *priv = file->private_data;
 164         char buf[16];
 165         int ret;
 166
 167         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
 168
 169         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 170 }
 171
 172 static const struct file_operations btmrvl_pscmd_fops = {
 173         .read = btmrvl_pscmd_read,
 174         .write = btmrvl_pscmd_write,
 175         .open = btmrvl_open_generic,
 176 };
 177
 178 static ssize_t btmrvl_gpiogap_write(struct file *file, const char __user *ubuf,
 179                                                 size_t count, loff_t *ppos)
 180 {
 181         struct btmrvl_private *priv = file->private_data;
 182         char buf[16];
 183         long result, ret;
 184
 185         memset(buf, 0, sizeof(buf));
 186
 187         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 188                 return -EFAULT;
 189
 190         ret = strict_strtol(buf, 16, &result);
 191
 192         priv->btmrvl_dev.gpio_gap = result;
 193
 194         return count;
 195 }
 196
 197 static ssize_t btmrvl_gpiogap_read(struct file *file, char __user *userbuf,
 198                                                 size_t count, loff_t *ppos)
 199 {
 200         struct btmrvl_private *priv = file->private_data;
 201         char buf[16];
 202         int ret;
 203
 204         ret = snprintf(buf, sizeof(buf) - 1, "0x%x\n",
 205                                                 priv->btmrvl_dev.gpio_gap);
 206
 207         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 208 }
 209
 210 static const struct file_operations btmrvl_gpiogap_fops = {
 211         .read   = btmrvl_gpiogap_read,
 212         .write  = btmrvl_gpiogap_write,
 213         .open   = btmrvl_open_generic,
 214 };
 215
 216 static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
 217                                                 size_t count, loff_t *ppos)
 218 {
 219         struct btmrvl_private *priv = (struct btmrvl_private *) file->private_data;
 220         char buf[16];
 221         long result, ret;
 222
 223         memset(buf, 0, sizeof(buf));
 224
 225         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 226                 return -EFAULT;
 227
 228         ret = strict_strtol(buf, 10, &result);
 229
 230         priv->btmrvl_dev.hscmd = result;
 231         if (priv->btmrvl_dev.hscmd) {
 232                 btmrvl_prepare_command(priv);
 233                 wake_up_interruptible(&priv->main_thread.wait_q);
 234         }
 235
 236         return count;
 237 }
 238
 239 static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
 240                                                 size_t count, loff_t *ppos)
 241 {
 242         struct btmrvl_private *priv = file->private_data;
 243         char buf[16];
 244         int ret;
 245
 246         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
 247
 248         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 249 }
 250
 251 static const struct file_operations btmrvl_hscmd_fops = {
 252         .read   = btmrvl_hscmd_read,
 253         .write  = btmrvl_hscmd_write,
 254         .open   = btmrvl_open_generic,
 255 };
 256
 257 static ssize_t btmrvl_hsmode_write(struct file *file, const char __user *ubuf,
 258                                                 size_t count, loff_t *ppos)
 259 {
 260         struct btmrvl_private *priv = file->private_data;
 261         char buf[16];
 262         long result, ret;
 263
 264         memset(buf, 0, sizeof(buf));
 265
 266         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 267                 return -EFAULT;
 268
 269         ret = strict_strtol(buf, 10, &result);
 270
 271         priv->btmrvl_dev.hsmode = result;
 272
 273         return count;
 274 }
 275
 276 static ssize_t btmrvl_hsmode_read(struct file *file, char __user * userbuf,
 277                                                 size_t count, loff_t *ppos)
 278 {
 279         struct btmrvl_private *priv = file->private_data;
 280         char buf[16];
 281         int ret;
 282
 283         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hsmode);
 284
 285         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 286 }
 287
 288 static const struct file_operations btmrvl_hsmode_fops = {
 289         .read   = btmrvl_hsmode_read,
 290         .write  = btmrvl_hsmode_write,
 291         .open   = btmrvl_open_generic,
 292 };
 293
 294 static ssize_t btmrvl_curpsmode_read(struct file *file, char __user *userbuf,
 295                                                 size_t count, loff_t *ppos)
 296 {
 297         struct btmrvl_private *priv = file->private_data;
 298         char buf[16];
 299         int ret;
 300
 301         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->psmode);
 302
 303         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 304 }
 305
 306 static const struct file_operations btmrvl_curpsmode_fops = {
 307         .read   = btmrvl_curpsmode_read,
 308         .open   = btmrvl_open_generic,
 309 };
 310
 311 static ssize_t btmrvl_psstate_read(struct file *file, char __user * userbuf,
 312                                                 size_t count, loff_t *ppos)
 313 {
 314         struct btmrvl_private *priv = file->private_data;
 315         char buf[16];
 316         int ret;
 317
 318         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->ps_state);
 319
 320         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 321 }
 322
 323 static const struct file_operations btmrvl_psstate_fops = {
 324         .read   = btmrvl_psstate_read,
 325         .open   = btmrvl_open_generic,
 326 };
 327
 328 static ssize_t btmrvl_hsstate_read(struct file *file, char __user *userbuf,
 329                                                 size_t count, loff_t *ppos)
 330 {
 331         struct btmrvl_private *priv = file->private_data;
 332         char buf[16];
 333         int ret;
 334
 335         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->hs_state);
 336
 337         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 338 }
 339
 340 static const struct file_operations btmrvl_hsstate_fops = {
 341         .read   = btmrvl_hsstate_read,
 342         .open   = btmrvl_open_generic,
 343 };
 344
 345 static ssize_t btmrvl_txdnldready_read(struct file *file, char __user *userbuf,
 346                                                 size_t count, loff_t *ppos)
 347 {
 348         struct btmrvl_private *priv = file->private_data;
 349         char buf[16];
 350         int ret;
 351
 352         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
 353                                         priv->btmrvl_dev.tx_dnld_rdy);
 354
 355         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 356 }
 357
 358 static const struct file_operations btmrvl_txdnldready_fops = {
 359         .read   = btmrvl_txdnldready_read,
 360         .open   = btmrvl_open_generic,
 361 };
 362
 363 void btmrvl_debugfs_init(struct hci_dev *hdev)
 364 {
 365         struct btmrvl_private *priv = hdev->driver_data;
 366         struct btmrvl_debugfs_data *dbg;
 367
 368         if (!hdev->debugfs)
 369                 return;
 370
 371         dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
 372         priv->debugfs_data = dbg;
 373
 374         if (!dbg) {
 375                 BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
 376                 return;
 377         }
 378
 379         dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
 380
 381         dbg->psmode = debugfs_create_file("psmode", 0644, dbg->config_dir,
 382                                 hdev->driver_data, &btmrvl_psmode_fops);
 383         dbg->pscmd = debugfs_create_file("pscmd", 0644, dbg->config_dir,
 384                                 hdev->driver_data, &btmrvl_pscmd_fops);
 385         dbg->gpiogap = debugfs_create_file("gpiogap", 0644, dbg->config_dir,
 386                                 hdev->driver_data, &btmrvl_gpiogap_fops);
 387         dbg->hsmode =  debugfs_create_file("hsmode", 0644, dbg->config_dir,
 388                                 hdev->driver_data, &btmrvl_hsmode_fops);
 389         dbg->hscmd = debugfs_create_file("hscmd", 0644, dbg->config_dir,
 390                                 hdev->driver_data, &btmrvl_hscmd_fops);
 391         dbg->hscfgcmd = debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
 392                                 hdev->driver_data, &btmrvl_hscfgcmd_fops);
 393
 394         dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
 395         dbg->curpsmode = debugfs_create_file("curpsmode", 0444,
 396                                                 dbg->status_dir,
 397                                                 hdev->driver_data,
 398                                                 &btmrvl_curpsmode_fops);
 399         dbg->psstate = debugfs_create_file("psstate", 0444, dbg->status_dir,
 400                                 hdev->driver_data, &btmrvl_psstate_fops);
 401         dbg->hsstate = debugfs_create_file("hsstate", 0444, dbg->status_dir,
 402                                 hdev->driver_data, &btmrvl_hsstate_fops);
 403         dbg->txdnldready = debugfs_create_file("txdnldready", 0444,
 404                                                 dbg->status_dir,
 405                                                 hdev->driver_data,
 406                                                 &btmrvl_txdnldready_fops);
 407 }
 408
 409 void btmrvl_debugfs_remove(struct hci_dev *hdev)
 410 {
 411         struct btmrvl_private *priv = hdev->driver_data;
 412         struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
 413
 414         if (!dbg)
 415                 return;
 416
 417         debugfs_remove(dbg->psmode);
 418         debugfs_remove(dbg->pscmd);
 419         debugfs_remove(dbg->gpiogap);
 420         debugfs_remove(dbg->hsmode);
 421         debugfs_remove(dbg->hscmd);
 422         debugfs_remove(dbg->hscfgcmd);
 423         debugfs_remove(dbg->config_dir);
 424
 425         debugfs_remove(dbg->curpsmode);
 426         debugfs_remove(dbg->psstate);
 427         debugfs_remove(dbg->hsstate);
 428         debugfs_remove(dbg->txdnldready);
 429         debugfs_remove(dbg->status_dir);
 430
 431         kfree(dbg);
 432 }