Documentation/DocBook/kernel-api.tmpl

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   4
   5 <book id="LinuxKernelAPI">
   6  <bookinfo>
   7   <title>The Linux Kernel API</title>
   8
   9   <legalnotice>
  10    <para>
  11      This documentation is free software; you can redistribute
  12      it and/or modify it under the terms of the GNU General Public
  13      License as published by the Free Software Foundation; either
  14      version 2 of the License, or (at your option) any later
  15      version.
  16    </para>
  17
  18    <para>
  19      This program is distributed in the hope that it will be
  20      useful, but WITHOUT ANY WARRANTY; without even the implied
  21      warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  22      See the GNU General Public License for more details.
  23    </para>
  24
  25    <para>
  26      You should have received a copy of the GNU General Public
  27      License along with this program; if not, write to the Free
  28      Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  29      MA 02111-1307 USA
  30    </para>
  31
  32    <para>
  33      For more details see the file COPYING in the source
  34      distribution of Linux.
  35    </para>
  36   </legalnotice>
  37  </bookinfo>
  38
  39 <toc></toc>
  40
  41   <chapter id="Basics">
  42      <title>Driver Basics</title>
  43      <sect1><title>Driver Entry and Exit points</title>
  44 !Iinclude/linux/init.h
  45      </sect1>
  46
  47      <sect1><title>Atomic and pointer manipulation</title>
  48 !Iinclude/asm-i386/atomic.h
  49 !Iinclude/asm-i386/unaligned.h
  50      </sect1>
  51
  52      <sect1><title>Delaying, scheduling, and timer routines</title>
  53 !Iinclude/linux/sched.h
  54 !Ekernel/sched.c
  55 !Ekernel/timer.c
  56      </sect1>
  57      <sect1><title>High-resolution timers</title>
  58 !Iinclude/linux/ktime.h
  59 !Iinclude/linux/hrtimer.h
  60 !Ekernel/hrtimer.c
  61      </sect1>
  62      <sect1><title>Internal Functions</title>
  63 !Ikernel/exit.c
  64 !Ikernel/signal.c
  65      </sect1>
  66
  67      <sect1><title>Kernel objects manipulation</title>
  68 <!--
  69 X!Iinclude/linux/kobject.h
  70 -->
  71 !Elib/kobject.c
  72      </sect1>
  73
  74      <sect1><title>Kernel utility functions</title>
  75 !Iinclude/linux/kernel.h
  76 !Ekernel/printk.c
  77 !Ekernel/panic.c
  78 !Ekernel/sys.c
  79 !Ekernel/rcupdate.c
  80      </sect1>
  81
  82   </chapter>
  83
  84   <chapter id="adt">
  85      <title>Data Types</title>
  86      <sect1><title>Doubly Linked Lists</title>
  87 !Iinclude/linux/list.h
  88      </sect1>
  89   </chapter>
  90
  91   <chapter id="libc">
  92      <title>Basic C Library Functions</title>
  93
  94      <para>
  95        When writing drivers, you cannot in general use routines which are
  96        from the C Library.  Some of the functions have been found generally
  97        useful and they are listed below.  The behaviour of these functions
  98        may vary slightly from those defined by ANSI, and these deviations
  99        are noted in the text.
 100      </para>
 101
 102      <sect1><title>String Conversions</title>
 103 !Ilib/vsprintf.c
 104 !Elib/vsprintf.c
 105      </sect1>
 106      <sect1><title>String Manipulation</title>
 107 <!-- All functions are exported at now
 108 X!Ilib/string.c
 109  -->
 110 !Elib/string.c
 111      </sect1>
 112      <sect1><title>Bit Operations</title>
 113 !Iinclude/asm-i386/bitops.h
 114      </sect1>
 115   </chapter>
 116
 117   <chapter id="mm">
 118      <title>Memory Management in Linux</title>
 119      <sect1><title>The Slab Cache</title>
 120 !Emm/slab.c
 121      </sect1>
 122      <sect1><title>User Space Memory Access</title>
 123 !Iinclude/asm-i386/uaccess.h
 124 !Earch/i386/lib/usercopy.c
 125      </sect1>
 126      <sect1><title>More Memory Management Functions</title>
 127 !Iinclude/linux/rmap.h
 128 !Emm/readahead.c
 129 !Emm/filemap.c
 130 !Emm/memory.c
 131 !Emm/vmalloc.c
 132 !Emm/mempool.c
 133 !Emm/page-writeback.c
 134 !Emm/truncate.c
 135      </sect1>
 136   </chapter>
 137
 138
 139   <chapter id="ipc">
 140      <title>Kernel IPC facilities</title>
 141
 142      <sect1><title>IPC utilities</title>
 143 !Iipc/util.c
 144      </sect1>
 145   </chapter>
 146
 147   <chapter id="kfifo">
 148      <title>FIFO Buffer</title>
 149      <sect1><title>kfifo interface</title>
 150 !Iinclude/linux/kfifo.h
 151 !Ekernel/kfifo.c
 152      </sect1>
 153   </chapter>
 154
 155   <chapter id="proc">
 156      <title>The proc filesystem</title>
 157
 158      <sect1><title>sysctl interface</title>
 159 !Ekernel/sysctl.c
 160      </sect1>
 161
 162      <sect1><title>proc filesystem interface</title>
 163 !Ifs/proc/base.c
 164      </sect1>
 165   </chapter>
 166
 167   <chapter id="debugfs">
 168      <title>The debugfs filesystem</title>
 169
 170      <sect1><title>debugfs interface</title>
 171 !Efs/debugfs/inode.c
 172 !Efs/debugfs/file.c
 173      </sect1>
 174   </chapter>
 175
 176   <chapter id="vfs">
 177      <title>The Linux VFS</title>
 178      <sect1><title>The Filesystem types</title>
 179 !Iinclude/linux/fs.h
 180      </sect1>
 181      <sect1><title>The Directory Cache</title>
 182 !Efs/dcache.c
 183 !Iinclude/linux/dcache.h
 184      </sect1>
 185      <sect1><title>Inode Handling</title>
 186 !Efs/inode.c
 187 !Efs/bad_inode.c
 188      </sect1>
 189      <sect1><title>Registration and Superblocks</title>
 190 !Efs/super.c
 191      </sect1>
 192      <sect1><title>File Locks</title>
 193 !Efs/locks.c
 194 !Ifs/locks.c
 195      </sect1>
 196      <sect1><title>Other Functions</title>
 197 !Efs/mpage.c
 198 !Efs/namei.c
 199 !Efs/buffer.c
 200 !Efs/bio.c
 201 !Efs/seq_file.c
 202 !Efs/filesystems.c
 203 !Efs/fs-writeback.c
 204 !Efs/block_dev.c
 205      </sect1>
 206   </chapter>
 207
 208   <chapter id="netcore">
 209      <title>Linux Networking</title>
 210      <sect1><title>Networking Base Types</title>
 211 !Iinclude/linux/net.h
 212      </sect1>
 213      <sect1><title>Socket Buffer Functions</title>
 214 !Iinclude/linux/skbuff.h
 215 !Iinclude/net/sock.h
 216 !Enet/socket.c
 217 !Enet/core/skbuff.c
 218 !Enet/core/sock.c
 219 !Enet/core/datagram.c
 220 !Enet/core/stream.c
 221      </sect1>
 222      <sect1><title>Socket Filter</title>
 223 !Enet/core/filter.c
 224      </sect1>
 225      <sect1><title>Generic Network Statistics</title>
 226 !Iinclude/linux/gen_stats.h
 227 !Enet/core/gen_stats.c
 228 !Enet/core/gen_estimator.c
 229      </sect1>
 230      <sect1><title>SUN RPC subsystem</title>
 231 <!-- The !D functionality is not perfect, garbage has to be protected by comments
 232 !Dnet/sunrpc/sunrpc_syms.c
 233 -->
 234 !Enet/sunrpc/xdr.c
 235 !Enet/sunrpc/svcsock.c
 236 !Enet/sunrpc/sched.c
 237      </sect1>
 238   </chapter>
 239
 240   <chapter id="netdev">
 241      <title>Network device support</title>
 242      <sect1><title>Driver Support</title>
 243 !Enet/core/dev.c
 244 !Enet/ethernet/eth.c
 245 !Iinclude/linux/etherdevice.h
 246 <!-- FIXME: Removed for now since no structured comments in source
 247 X!Enet/core/wireless.c
 248 -->
 249      </sect1>
 250      <sect1><title>Synchronous PPP</title>
 251 !Edrivers/net/wan/syncppp.c
 252      </sect1>
 253   </chapter>
 254
 255   <chapter id="modload">
 256      <title>Module Support</title>
 257      <sect1><title>Module Loading</title>
 258 !Ekernel/kmod.c
 259      </sect1>
 260      <sect1><title>Inter Module support</title>
 261         <para>
 262            Refer to the file kernel/module.c for more information.
 263         </para>
 264 <!-- FIXME: Removed for now since no structured comments in source
 265 X!Ekernel/module.c
 266 -->
 267      </sect1>
 268   </chapter>
 269
 270   <chapter id="hardware">
 271      <title>Hardware Interfaces</title>
 272      <sect1><title>Interrupt Handling</title>
 273 !Ekernel/irq/manage.c
 274      </sect1>
 275
 276      <sect1><title>Resources Management</title>
 277 !Ekernel/resource.c
 278      </sect1>
 279
 280      <sect1><title>MTRR Handling</title>
 281 !Earch/i386/kernel/cpu/mtrr/main.c
 282      </sect1>
 283      <sect1><title>PCI Support Library</title>
 284 !Edrivers/pci/pci.c
 285 !Edrivers/pci/pci-driver.c
 286 !Edrivers/pci/remove.c
 287 !Edrivers/pci/pci-acpi.c
 288 <!-- kerneldoc does not understand to __devinit
 289 X!Edrivers/pci/search.c
 290  -->
 291 !Edrivers/pci/msi.c
 292 !Edrivers/pci/bus.c
 293 <!-- FIXME: Removed for now since no structured comments in source
 294 X!Edrivers/pci/hotplug.c
 295 -->
 296 !Edrivers/pci/probe.c
 297 !Edrivers/pci/rom.c
 298      </sect1>
 299      <sect1><title>PCI Hotplug Support Library</title>
 300 !Edrivers/pci/hotplug/pci_hotplug_core.c
 301      </sect1>
 302      <sect1><title>MCA Architecture</title>
 303         <sect2><title>MCA Device Functions</title>
 304            <para>
 305               Refer to the file arch/i386/kernel/mca.c for more information.
 306            </para>
 307 <!-- FIXME: Removed for now since no structured comments in source
 308 X!Earch/i386/kernel/mca.c
 309 -->
 310         </sect2>
 311         <sect2><title>MCA Bus DMA</title>
 312 !Iinclude/asm-i386/mca_dma.h
 313         </sect2>
 314      </sect1>
 315   </chapter>
 316
 317   <chapter id="devfs">
 318      <title>The Device File System</title>
 319 !Efs/devfs/base.c
 320   </chapter>
 321
 322   <chapter id="sysfs">
 323      <title>The Filesystem for Exporting Kernel Objects</title>
 324 !Efs/sysfs/file.c
 325 !Efs/sysfs/symlink.c
 326 !Efs/sysfs/bin.c
 327   </chapter>
 328
 329   <chapter id="security">
 330      <title>Security Framework</title>
 331 !Esecurity/security.c
 332   </chapter>
 333
 334   <chapter id="pmfuncs">
 335      <title>Power Management</title>
 336 !Ekernel/power/pm.c
 337   </chapter>
 338
 339   <chapter id="devdrivers">
 340      <title>Device drivers infrastructure</title>
 341      <sect1><title>Device Drivers Base</title>
 342 <!--
 343 X!Iinclude/linux/device.h
 344 -->
 345 !Edrivers/base/driver.c
 346 !Edrivers/base/core.c
 347 !Edrivers/base/firmware_class.c
 348 !Edrivers/base/transport_class.c
 349 !Edrivers/base/dmapool.c
 350 <!-- Cannot be included, because
 351      attribute_container_add_class_device_adapter
 352  and attribute_container_classdev_to_container
 353      exceed allowed 44 characters maximum
 354 X!Edrivers/base/attribute_container.c
 355 -->
 356 !Edrivers/base/sys.c
 357 <!--
 358 X!Edrivers/base/interface.c
 359 -->
 360 !Edrivers/base/platform.c
 361 !Edrivers/base/bus.c
 362      </sect1>
 363      <sect1><title>Device Drivers Power Management</title>
 364 !Edrivers/base/power/main.c
 365 !Edrivers/base/power/resume.c
 366 !Edrivers/base/power/suspend.c
 367      </sect1>
 368      <sect1><title>Device Drivers ACPI Support</title>
 369 <!-- Internal functions only
 370 X!Edrivers/acpi/sleep/main.c
 371 X!Edrivers/acpi/sleep/wakeup.c
 372 X!Edrivers/acpi/motherboard.c
 373 X!Edrivers/acpi/bus.c
 374 -->
 375 !Edrivers/acpi/scan.c
 376 !Idrivers/acpi/scan.c
 377 <!-- No correct structured comments
 378 X!Edrivers/acpi/pci_bind.c
 379 -->
 380      </sect1>
 381      <sect1><title>Device drivers PnP support</title>
 382 !Edrivers/pnp/core.c
 383 <!-- No correct structured comments
 384 X!Edrivers/pnp/system.c
 385  -->
 386 !Edrivers/pnp/card.c
 387 !Edrivers/pnp/driver.c
 388 !Edrivers/pnp/manager.c
 389 !Edrivers/pnp/support.c
 390      </sect1>
 391   </chapter>
 392
 393
 394   <chapter id="blkdev">
 395      <title>Block Devices</title>
 396 !Eblock/ll_rw_blk.c
 397   </chapter>
 398
 399   <chapter id="miscdev">
 400      <title>Miscellaneous Devices</title>
 401 !Edrivers/char/misc.c
 402   </chapter>
 403
 404   <chapter id="viddev">
 405      <title>Video4Linux</title>
 406 !Edrivers/media/video/videodev.c
 407   </chapter>
 408
 409   <chapter id="snddev">
 410      <title>Sound Devices</title>
 411 !Iinclude/sound/core.h
 412 !Esound/sound_core.c
 413 !Iinclude/sound/pcm.h
 414 !Esound/core/pcm.c
 415 !Esound/core/device.c
 416 !Esound/core/info.c
 417 !Esound/core/rawmidi.c
 418 !Esound/core/sound.c
 419 !Esound/core/memory.c
 420 !Esound/core/pcm_memory.c
 421 !Esound/core/init.c
 422 !Esound/core/isadma.c
 423 !Esound/core/control.c
 424 !Esound/core/pcm_lib.c
 425 !Esound/core/hwdep.c
 426 !Esound/core/pcm_native.c
 427 !Esound/core/memalloc.c
 428 <!-- FIXME: Removed for now since no structured comments in source
 429 X!Isound/sound_firmware.c
 430 -->
 431   </chapter>
 432
 433   <chapter id="uart16x50">
 434      <title>16x50 UART Driver</title>
 435 !Iinclude/linux/serial_core.h
 436 !Edrivers/serial/serial_core.c
 437 !Edrivers/serial/8250.c
 438   </chapter>
 439
 440   <chapter id="z85230">
 441      <title>Z85230 Support Library</title>
 442 !Edrivers/net/wan/z85230.c
 443   </chapter>
 444
 445   <chapter id="fbdev">
 446      <title>Frame Buffer Library</title>
 447
 448      <para>
 449        The frame buffer drivers depend heavily on four data structures.
 450        These structures are declared in include/linux/fb.h.  They are
 451        fb_info, fb_var_screeninfo, fb_fix_screeninfo and fb_monospecs.
 452        The last three can be made available to and from userland.
 453      </para>
 454
 455      <para>
 456        fb_info defines the current state of a particular video card.
 457        Inside fb_info, there exists a fb_ops structure which is a
 458        collection of needed functions to make fbdev and fbcon work.
 459        fb_info is only visible to the kernel.
 460      </para>
 461
 462      <para>
 463        fb_var_screeninfo is used to describe the features of a video card
 464        that are user defined.  With fb_var_screeninfo, things such as
 465        depth and the resolution may be defined.
 466      </para>
 467
 468      <para>
 469        The next structure is fb_fix_screeninfo. This defines the
 470        properties of a card that are created when a mode is set and can't
 471        be changed otherwise.  A good example of this is the start of the
 472        frame buffer memory.  This "locks" the address of the frame buffer
 473        memory, so that it cannot be changed or moved.
 474      </para>
 475
 476      <para>
 477        The last structure is fb_monospecs. In the old API, there was
 478        little importance for fb_monospecs. This allowed for forbidden things
 479        such as setting a mode of 800x600 on a fix frequency monitor. With
 480        the new API, fb_monospecs prevents such things, and if used
 481        correctly, can prevent a monitor from being cooked.  fb_monospecs
 482        will not be useful until kernels 2.5.x.
 483      </para>
 484
 485      <sect1><title>Frame Buffer Memory</title>
 486 !Edrivers/video/fbmem.c
 487      </sect1>
 488 <!--
 489      <sect1><title>Frame Buffer Console</title>
 490 X!Edrivers/video/console/fbcon.c
 491      </sect1>
 492 -->
 493      <sect1><title>Frame Buffer Colormap</title>
 494 !Edrivers/video/fbcmap.c
 495      </sect1>
 496 <!-- FIXME:
 497   drivers/video/fbgen.c has no docs, which stuffs up the sgml.  Comment
 498   out until somebody adds docs.  KAO
 499      <sect1><title>Frame Buffer Generic Functions</title>
 500 X!Idrivers/video/fbgen.c
 501      </sect1>
 502 KAO -->
 503      <sect1><title>Frame Buffer Video Mode Database</title>
 504 !Idrivers/video/modedb.c
 505 !Edrivers/video/modedb.c
 506      </sect1>
 507      <sect1><title>Frame Buffer Macintosh Video Mode Database</title>
 508 !Edrivers/video/macmodes.c
 509      </sect1>
 510      <sect1><title>Frame Buffer Fonts</title>
 511         <para>
 512            Refer to the file drivers/video/console/fonts.c for more information.
 513         </para>
 514 <!-- FIXME: Removed for now since no structured comments in source
 515 X!Idrivers/video/console/fonts.c
 516 -->
 517      </sect1>
 518   </chapter>
 519 </book>