]> pilppa.org Git - linux-2.6-omap-h63xx.git/blob - Documentation/DocBook/kernel-api.tmpl
Pull percpu-dtc into release branch
[linux-2.6-omap-h63xx.git] / Documentation / DocBook / kernel-api.tmpl
1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
3         "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
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>Workqueues and Kevents</title>
63 !Ekernel/workqueue.c
64      </sect1>
65      <sect1><title>Internal Functions</title>
66 !Ikernel/exit.c
67 !Ikernel/signal.c
68 !Iinclude/linux/kthread.h
69 !Ekernel/kthread.c
70      </sect1>
71
72      <sect1><title>Kernel objects manipulation</title>
73 <!--
74 X!Iinclude/linux/kobject.h
75 -->
76 !Elib/kobject.c
77      </sect1>
78
79      <sect1><title>Kernel utility functions</title>
80 !Iinclude/linux/kernel.h
81 !Ekernel/printk.c
82 !Ekernel/panic.c
83 !Ekernel/sys.c
84 !Ekernel/rcupdate.c
85      </sect1>
86
87   </chapter>
88
89   <chapter id="adt">
90      <title>Data Types</title>
91      <sect1><title>Doubly Linked Lists</title>
92 !Iinclude/linux/list.h
93      </sect1>
94   </chapter>
95
96   <chapter id="libc">
97      <title>Basic C Library Functions</title>
98
99      <para>
100        When writing drivers, you cannot in general use routines which are
101        from the C Library.  Some of the functions have been found generally
102        useful and they are listed below.  The behaviour of these functions
103        may vary slightly from those defined by ANSI, and these deviations
104        are noted in the text.
105      </para>
106
107      <sect1><title>String Conversions</title>
108 !Ilib/vsprintf.c
109 !Elib/vsprintf.c
110      </sect1>
111      <sect1><title>String Manipulation</title>
112 <!-- All functions are exported at now
113 X!Ilib/string.c
114  -->
115 !Elib/string.c
116      </sect1>
117      <sect1><title>Bit Operations</title>
118 !Iinclude/asm-i386/bitops.h
119      </sect1>
120   </chapter>
121
122   <chapter id="kernel-lib">
123      <title>Basic Kernel Library Functions</title>
124
125      <para>
126        The Linux kernel provides more basic utility functions.
127      </para>
128
129      <sect1><title>Bitmap Operations</title>
130 !Elib/bitmap.c
131 !Ilib/bitmap.c
132      </sect1>
133
134      <sect1><title>Command-line Parsing</title>
135 !Elib/cmdline.c
136      </sect1>
137
138      <sect1><title>CRC Functions</title>
139 !Elib/crc16.c
140 !Elib/crc32.c
141 !Elib/crc-ccitt.c
142      </sect1>
143   </chapter>
144
145   <chapter id="mm">
146      <title>Memory Management in Linux</title>
147      <sect1><title>The Slab Cache</title>
148 !Iinclude/linux/slab.h
149 !Emm/slab.c
150      </sect1>
151      <sect1><title>User Space Memory Access</title>
152 !Iinclude/asm-i386/uaccess.h
153 !Earch/i386/lib/usercopy.c
154      </sect1>
155      <sect1><title>More Memory Management Functions</title>
156 !Iinclude/linux/rmap.h
157 !Emm/readahead.c
158 !Emm/filemap.c
159 !Emm/memory.c
160 !Emm/vmalloc.c
161 !Imm/page_alloc.c
162 !Emm/mempool.c
163 !Emm/page-writeback.c
164 !Emm/truncate.c
165      </sect1>
166   </chapter>
167
168
169   <chapter id="ipc">
170      <title>Kernel IPC facilities</title>
171
172      <sect1><title>IPC utilities</title>
173 !Iipc/util.c
174      </sect1>
175   </chapter>
176
177   <chapter id="kfifo">
178      <title>FIFO Buffer</title>
179      <sect1><title>kfifo interface</title>
180 !Iinclude/linux/kfifo.h
181 !Ekernel/kfifo.c
182      </sect1>
183   </chapter>
184
185   <chapter id="relayfs">
186      <title>relay interface support</title>
187
188      <para>
189         Relay interface support
190         is designed to provide an efficient mechanism for tools and
191         facilities to relay large amounts of data from kernel space to
192         user space.
193      </para>
194
195      <sect1><title>relay interface</title>
196 !Ekernel/relay.c
197 !Ikernel/relay.c
198      </sect1>
199   </chapter>
200
201   <chapter id="netcore">
202      <title>Linux Networking</title>
203      <sect1><title>Networking Base Types</title>
204 !Iinclude/linux/net.h
205      </sect1>
206      <sect1><title>Socket Buffer Functions</title>
207 !Iinclude/linux/skbuff.h
208 !Iinclude/net/sock.h
209 !Enet/socket.c
210 !Enet/core/skbuff.c
211 !Enet/core/sock.c
212 !Enet/core/datagram.c
213 !Enet/core/stream.c
214      </sect1>
215      <sect1><title>Socket Filter</title>
216 !Enet/core/filter.c
217      </sect1>
218      <sect1><title>Generic Network Statistics</title>
219 !Iinclude/linux/gen_stats.h
220 !Enet/core/gen_stats.c
221 !Enet/core/gen_estimator.c
222      </sect1>
223      <sect1><title>SUN RPC subsystem</title>
224 <!-- The !D functionality is not perfect, garbage has to be protected by comments
225 !Dnet/sunrpc/sunrpc_syms.c
226 -->
227 !Enet/sunrpc/xdr.c
228 !Enet/sunrpc/svcsock.c
229 !Enet/sunrpc/sched.c
230      </sect1>
231   </chapter>
232
233   <chapter id="netdev">
234      <title>Network device support</title>
235      <sect1><title>Driver Support</title>
236 !Enet/core/dev.c
237 !Enet/ethernet/eth.c
238 !Iinclude/linux/etherdevice.h
239 !Edrivers/net/phy/phy.c
240 !Idrivers/net/phy/phy.c
241 !Edrivers/net/phy/phy_device.c
242 !Idrivers/net/phy/phy_device.c
243 !Edrivers/net/phy/mdio_bus.c
244 !Idrivers/net/phy/mdio_bus.c
245 <!-- FIXME: Removed for now since no structured comments in source
246 X!Enet/core/wireless.c
247 -->
248      </sect1>
249      <sect1><title>Synchronous PPP</title>
250 !Edrivers/net/wan/syncppp.c
251      </sect1>
252   </chapter>
253
254   <chapter id="modload">
255      <title>Module Support</title>
256      <sect1><title>Module Loading</title>
257 !Ekernel/kmod.c
258      </sect1>
259      <sect1><title>Inter Module support</title>
260         <para>
261            Refer to the file kernel/module.c for more information.
262         </para>
263 <!-- FIXME: Removed for now since no structured comments in source
264 X!Ekernel/module.c
265 -->
266      </sect1>
267   </chapter>
268
269   <chapter id="hardware">
270      <title>Hardware Interfaces</title>
271      <sect1><title>Interrupt Handling</title>
272 !Ekernel/irq/manage.c
273      </sect1>
274
275      <sect1><title>DMA Channels</title>
276 !Ekernel/dma.c
277      </sect1>
278
279      <sect1><title>Resources Management</title>
280 !Ikernel/resource.c
281 !Ekernel/resource.c
282      </sect1>
283
284      <sect1><title>MTRR Handling</title>
285 !Earch/i386/kernel/cpu/mtrr/main.c
286      </sect1>
287
288      <sect1><title>PCI Support Library</title>
289 !Edrivers/pci/pci.c
290 !Edrivers/pci/pci-driver.c
291 !Edrivers/pci/remove.c
292 !Edrivers/pci/pci-acpi.c
293 !Edrivers/pci/search.c
294 !Edrivers/pci/msi.c
295 !Edrivers/pci/bus.c
296 <!-- FIXME: Removed for now since no structured comments in source
297 X!Edrivers/pci/hotplug.c
298 -->
299 !Edrivers/pci/probe.c
300 !Edrivers/pci/rom.c
301      </sect1>
302      <sect1><title>PCI Hotplug Support Library</title>
303 !Edrivers/pci/hotplug/pci_hotplug_core.c
304      </sect1>
305      <sect1><title>MCA Architecture</title>
306         <sect2><title>MCA Device Functions</title>
307            <para>
308               Refer to the file arch/i386/kernel/mca.c for more information.
309            </para>
310 <!-- FIXME: Removed for now since no structured comments in source
311 X!Earch/i386/kernel/mca.c
312 -->
313         </sect2>
314         <sect2><title>MCA Bus DMA</title>
315 !Iinclude/asm-i386/mca_dma.h
316         </sect2>
317      </sect1>
318   </chapter>
319
320   <chapter id="firmware">
321      <title>Firmware Interfaces</title>
322      <sect1><title>DMI Interfaces</title>
323 !Edrivers/firmware/dmi_scan.c
324      </sect1>
325      <sect1><title>EDD Interfaces</title>
326 !Idrivers/firmware/edd.c
327      </sect1>
328   </chapter>
329
330   <chapter id="security">
331      <title>Security Framework</title>
332 !Esecurity/security.c
333   </chapter>
334
335   <chapter id="audit">
336      <title>Audit Interfaces</title>
337 !Ekernel/audit.c
338 !Ikernel/auditsc.c
339 !Ikernel/auditfilter.c
340   </chapter>
341
342   <chapter id="accounting">
343      <title>Accounting Framework</title>
344 !Ikernel/acct.c
345   </chapter>
346
347   <chapter id="pmfuncs">
348      <title>Power Management</title>
349 !Ekernel/power/pm.c
350   </chapter>
351
352   <chapter id="devdrivers">
353      <title>Device drivers infrastructure</title>
354      <sect1><title>Device Drivers Base</title>
355 <!--
356 X!Iinclude/linux/device.h
357 -->
358 !Edrivers/base/driver.c
359 !Edrivers/base/core.c
360 !Edrivers/base/class.c
361 !Edrivers/base/firmware_class.c
362 !Edrivers/base/transport_class.c
363 !Edrivers/base/dmapool.c
364 <!-- Cannot be included, because
365      attribute_container_add_class_device_adapter
366  and attribute_container_classdev_to_container
367      exceed allowed 44 characters maximum
368 X!Edrivers/base/attribute_container.c
369 -->
370 !Edrivers/base/sys.c
371 <!--
372 X!Edrivers/base/interface.c
373 -->
374 !Edrivers/base/platform.c
375 !Edrivers/base/bus.c
376      </sect1>
377      <sect1><title>Device Drivers Power Management</title>
378 !Edrivers/base/power/main.c
379 !Edrivers/base/power/resume.c
380 !Edrivers/base/power/suspend.c
381      </sect1>
382      <sect1><title>Device Drivers ACPI Support</title>
383 <!-- Internal functions only
384 X!Edrivers/acpi/sleep/main.c
385 X!Edrivers/acpi/sleep/wakeup.c
386 X!Edrivers/acpi/motherboard.c
387 X!Edrivers/acpi/bus.c
388 -->
389 !Edrivers/acpi/scan.c
390 !Idrivers/acpi/scan.c
391 <!-- No correct structured comments
392 X!Edrivers/acpi/pci_bind.c
393 -->
394      </sect1>
395      <sect1><title>Device drivers PnP support</title>
396 !Edrivers/pnp/core.c
397 <!-- No correct structured comments
398 X!Edrivers/pnp/system.c
399  -->
400 !Edrivers/pnp/card.c
401 !Edrivers/pnp/driver.c
402 !Edrivers/pnp/manager.c
403 !Edrivers/pnp/support.c
404      </sect1>
405   </chapter>
406
407   <chapter id="blkdev">
408      <title>Block Devices</title>
409 !Eblock/ll_rw_blk.c
410   </chapter>
411
412   <chapter id="chrdev">
413         <title>Char devices</title>
414 !Efs/char_dev.c
415   </chapter>
416
417   <chapter id="miscdev">
418      <title>Miscellaneous Devices</title>
419 !Edrivers/char/misc.c
420   </chapter>
421
422   <chapter id="parportdev">
423      <title>Parallel Port Devices</title>
424 !Iinclude/linux/parport.h
425 !Edrivers/parport/ieee1284.c
426 !Edrivers/parport/share.c
427 !Idrivers/parport/daisy.c
428   </chapter>
429
430   <chapter id="message_devices">
431         <title>Message-based devices</title>
432      <sect1><title>Fusion message devices</title>
433 !Edrivers/message/fusion/mptbase.c
434 !Idrivers/message/fusion/mptbase.c
435 !Edrivers/message/fusion/mptscsih.c
436 !Idrivers/message/fusion/mptscsih.c
437 !Idrivers/message/fusion/mptctl.c
438 !Idrivers/message/fusion/mptspi.c
439 !Idrivers/message/fusion/mptfc.c
440 !Idrivers/message/fusion/mptlan.c
441      </sect1>
442      <sect1><title>I2O message devices</title>
443 !Iinclude/linux/i2o.h
444 !Idrivers/message/i2o/core.h
445 !Edrivers/message/i2o/iop.c
446 !Idrivers/message/i2o/iop.c
447 !Idrivers/message/i2o/config-osm.c
448 !Edrivers/message/i2o/exec-osm.c
449 !Idrivers/message/i2o/exec-osm.c
450 !Idrivers/message/i2o/bus-osm.c
451 !Edrivers/message/i2o/device.c
452 !Idrivers/message/i2o/device.c
453 !Idrivers/message/i2o/driver.c
454 !Idrivers/message/i2o/pci.c
455 !Idrivers/message/i2o/i2o_block.c
456 !Idrivers/message/i2o/i2o_scsi.c
457 !Idrivers/message/i2o/i2o_proc.c
458      </sect1>
459   </chapter>
460
461   <chapter id="snddev">
462      <title>Sound Devices</title>
463 !Iinclude/sound/core.h
464 !Esound/sound_core.c
465 !Iinclude/sound/pcm.h
466 !Esound/core/pcm.c
467 !Esound/core/device.c
468 !Esound/core/info.c
469 !Esound/core/rawmidi.c
470 !Esound/core/sound.c
471 !Esound/core/memory.c
472 !Esound/core/pcm_memory.c
473 !Esound/core/init.c
474 !Esound/core/isadma.c
475 !Esound/core/control.c
476 !Esound/core/pcm_lib.c
477 !Esound/core/hwdep.c
478 !Esound/core/pcm_native.c
479 !Esound/core/memalloc.c
480 <!-- FIXME: Removed for now since no structured comments in source
481 X!Isound/sound_firmware.c
482 -->
483   </chapter>
484
485   <chapter id="uart16x50">
486      <title>16x50 UART Driver</title>
487 !Iinclude/linux/serial_core.h
488 !Edrivers/serial/serial_core.c
489 !Edrivers/serial/8250.c
490   </chapter>
491
492   <chapter id="z85230">
493      <title>Z85230 Support Library</title>
494 !Edrivers/net/wan/z85230.c
495   </chapter>
496
497   <chapter id="fbdev">
498      <title>Frame Buffer Library</title>
499
500      <para>
501        The frame buffer drivers depend heavily on four data structures.  
502        These structures are declared in include/linux/fb.h.  They are 
503        fb_info, fb_var_screeninfo, fb_fix_screeninfo and fb_monospecs. 
504        The last three can be made available to and from userland. 
505      </para>
506
507      <para>
508        fb_info defines the current state of a particular video card. 
509        Inside fb_info, there exists a fb_ops structure which is a 
510        collection of needed functions to make fbdev and fbcon work.
511        fb_info is only visible to the kernel.
512      </para>
513
514      <para>
515        fb_var_screeninfo is used to describe the features of a video card 
516        that are user defined.  With fb_var_screeninfo, things such as
517        depth and the resolution may be defined.
518      </para>
519
520      <para>
521        The next structure is fb_fix_screeninfo. This defines the 
522        properties of a card that are created when a mode is set and can't 
523        be changed otherwise.  A good example of this is the start of the 
524        frame buffer memory.  This "locks" the address of the frame buffer
525        memory, so that it cannot be changed or moved.
526      </para>
527
528      <para>
529        The last structure is fb_monospecs. In the old API, there was 
530        little importance for fb_monospecs. This allowed for forbidden things 
531        such as setting a mode of 800x600 on a fix frequency monitor. With 
532        the new API, fb_monospecs prevents such things, and if used 
533        correctly, can prevent a monitor from being cooked.  fb_monospecs
534        will not be useful until kernels 2.5.x.
535      </para>
536
537      <sect1><title>Frame Buffer Memory</title>
538 !Edrivers/video/fbmem.c
539      </sect1>
540 <!--
541      <sect1><title>Frame Buffer Console</title>
542 X!Edrivers/video/console/fbcon.c
543      </sect1>
544 -->
545      <sect1><title>Frame Buffer Colormap</title>
546 !Edrivers/video/fbcmap.c
547      </sect1>
548 <!-- FIXME:
549   drivers/video/fbgen.c has no docs, which stuffs up the sgml.  Comment
550   out until somebody adds docs.  KAO
551      <sect1><title>Frame Buffer Generic Functions</title>
552 X!Idrivers/video/fbgen.c
553      </sect1>
554 KAO -->
555      <sect1><title>Frame Buffer Video Mode Database</title>
556 !Idrivers/video/modedb.c
557 !Edrivers/video/modedb.c
558      </sect1>
559      <sect1><title>Frame Buffer Macintosh Video Mode Database</title>
560 !Edrivers/video/macmodes.c
561      </sect1>
562      <sect1><title>Frame Buffer Fonts</title>
563         <para>
564            Refer to the file drivers/video/console/fonts.c for more information.
565         </para>
566 <!-- FIXME: Removed for now since no structured comments in source
567 X!Idrivers/video/console/fonts.c
568 -->
569      </sect1>
570   </chapter>
571
572   <chapter id="input_subsystem">
573      <title>Input Subsystem</title>
574 !Iinclude/linux/input.h
575 !Edrivers/input/input.c
576 !Edrivers/input/ff-core.c
577 !Edrivers/input/ff-memless.c
578   </chapter>
579 </book>