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