Linux kernel mirror (for testing)
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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>Internal Functions</title>
58!Ikernel/exit.c
59!Ikernel/signal.c
60 </sect1>
61
62 <sect1><title>Kernel objects manipulation</title>
63<!--
64X!Iinclude/linux/kobject.h
65-->
66!Elib/kobject.c
67 </sect1>
68
69 <sect1><title>Kernel utility functions</title>
70!Iinclude/linux/kernel.h
71<!-- This needs to clean up to make kernel-doc happy
72X!Ekernel/printk.c
73 -->
74!Ekernel/panic.c
75!Ekernel/sys.c
76!Ekernel/rcupdate.c
77 </sect1>
78
79 </chapter>
80
81 <chapter id="adt">
82 <title>Data Types</title>
83 <sect1><title>Doubly Linked Lists</title>
84!Iinclude/linux/list.h
85 </sect1>
86 </chapter>
87
88 <chapter id="libc">
89 <title>Basic C Library Functions</title>
90
91 <para>
92 When writing drivers, you cannot in general use routines which are
93 from the C Library. Some of the functions have been found generally
94 useful and they are listed below. The behaviour of these functions
95 may vary slightly from those defined by ANSI, and these deviations
96 are noted in the text.
97 </para>
98
99 <sect1><title>String Conversions</title>
100!Ilib/vsprintf.c
101!Elib/vsprintf.c
102 </sect1>
103 <sect1><title>String Manipulation</title>
104<!-- All functions are exported at now
105X!Ilib/string.c
106 -->
107!Elib/string.c
108 </sect1>
109 <sect1><title>Bit Operations</title>
110!Iinclude/asm-i386/bitops.h
111 </sect1>
112 </chapter>
113
114 <chapter id="mm">
115 <title>Memory Management in Linux</title>
116 <sect1><title>The Slab Cache</title>
117!Emm/slab.c
118 </sect1>
119 <sect1><title>User Space Memory Access</title>
120!Iinclude/asm-i386/uaccess.h
121!Iarch/i386/lib/usercopy.c
122 </sect1>
123 <sect1><title>More Memory Management Functions</title>
124!Iinclude/linux/rmap.h
125!Emm/readahead.c
126!Emm/filemap.c
127!Emm/memory.c
128!Emm/vmalloc.c
129!Emm/mempool.c
130!Emm/page-writeback.c
131!Emm/truncate.c
132 </sect1>
133 </chapter>
134
135
136 <chapter id="ipc">
137 <title>Kernel IPC facilities</title>
138
139 <sect1><title>IPC utilities</title>
140!Iipc/util.c
141 </sect1>
142 </chapter>
143
144 <chapter id="kfifo">
145 <title>FIFO Buffer</title>
146 <sect1><title>kfifo interface</title>
147!Iinclude/linux/kfifo.h
148!Ekernel/kfifo.c
149 </sect1>
150 </chapter>
151
152 <chapter id="proc">
153 <title>The proc filesystem</title>
154
155 <sect1><title>sysctl interface</title>
156!Ekernel/sysctl.c
157 </sect1>
158
159 <sect1><title>proc filesystem interface</title>
160!Ifs/proc/base.c
161 </sect1>
162 </chapter>
163
164 <chapter id="debugfs">
165 <title>The debugfs filesystem</title>
166
167 <sect1><title>debugfs interface</title>
168!Efs/debugfs/inode.c
169!Efs/debugfs/file.c
170 </sect1>
171 </chapter>
172
173 <chapter id="vfs">
174 <title>The Linux VFS</title>
175 <sect1><title>The Filesystem types</title>
176!Iinclude/linux/fs.h
177!Einclude/linux/fs.h
178 </sect1>
179 <sect1><title>The Directory Cache</title>
180!Efs/dcache.c
181!Iinclude/linux/dcache.h
182 </sect1>
183 <sect1><title>Inode Handling</title>
184!Efs/inode.c
185!Efs/bad_inode.c
186 </sect1>
187 <sect1><title>Registration and Superblocks</title>
188!Efs/super.c
189 </sect1>
190 <sect1><title>File Locks</title>
191!Efs/locks.c
192!Ifs/locks.c
193 </sect1>
194 <sect1><title>Other Functions</title>
195!Efs/mpage.c
196!Efs/namei.c
197!Efs/buffer.c
198!Efs/bio.c
199!Efs/seq_file.c
200!Efs/filesystems.c
201!Efs/fs-writeback.c
202!Efs/block_dev.c
203 </sect1>
204 </chapter>
205
206 <chapter id="netcore">
207 <title>Linux Networking</title>
208 <sect1><title>Networking Base Types</title>
209!Iinclude/linux/net.h
210 </sect1>
211 <sect1><title>Socket Buffer Functions</title>
212!Iinclude/linux/skbuff.h
213!Iinclude/net/sock.h
214!Enet/socket.c
215!Enet/core/skbuff.c
216!Enet/core/sock.c
217!Enet/core/datagram.c
218!Enet/core/stream.c
219 </sect1>
220 <sect1><title>Socket Filter</title>
221!Enet/core/filter.c
222 </sect1>
223 <sect1><title>Generic Network Statistics</title>
224!Iinclude/linux/gen_stats.h
225!Enet/core/gen_stats.c
226!Enet/core/gen_estimator.c
227 </sect1>
228 <sect1><title>SUN RPC subsystem</title>
229<!-- The !D functionality is not perfect, garbage has to be protected by comments
230!Dnet/sunrpc/sunrpc_syms.c
231-->
232!Enet/sunrpc/xdr.c
233!Enet/sunrpc/svcsock.c
234!Enet/sunrpc/sched.c
235 </sect1>
236 </chapter>
237
238 <chapter id="netdev">
239 <title>Network device support</title>
240 <sect1><title>Driver Support</title>
241!Enet/core/dev.c
242 </sect1>
243 <sect1><title>8390 Based Network Cards</title>
244!Edrivers/net/8390.c
245 </sect1>
246 <sect1><title>Synchronous PPP</title>
247!Edrivers/net/wan/syncppp.c
248 </sect1>
249 </chapter>
250
251 <chapter id="modload">
252 <title>Module Support</title>
253 <sect1><title>Module Loading</title>
254!Ekernel/kmod.c
255 </sect1>
256 <sect1><title>Inter Module support</title>
257 <para>
258 Refer to the file kernel/module.c for more information.
259 </para>
260<!-- FIXME: Removed for now since no structured comments in source
261X!Ekernel/module.c
262-->
263 </sect1>
264 </chapter>
265
266 <chapter id="hardware">
267 <title>Hardware Interfaces</title>
268 <sect1><title>Interrupt Handling</title>
269!Ikernel/irq/manage.c
270 </sect1>
271
272 <sect1><title>Resources Management</title>
273!Ekernel/resource.c
274 </sect1>
275
276 <sect1><title>MTRR Handling</title>
277!Earch/i386/kernel/cpu/mtrr/main.c
278 </sect1>
279 <sect1><title>PCI Support Library</title>
280!Edrivers/pci/pci.c
281!Edrivers/pci/pci-driver.c
282!Edrivers/pci/remove.c
283!Edrivers/pci/pci-acpi.c
284<!-- kerneldoc does not understand to __devinit
285X!Edrivers/pci/search.c
286 -->
287!Edrivers/pci/msi.c
288!Edrivers/pci/bus.c
289!Edrivers/pci/hotplug.c
290!Edrivers/pci/probe.c
291!Edrivers/pci/rom.c
292 </sect1>
293 <sect1><title>PCI Hotplug Support Library</title>
294!Edrivers/pci/hotplug/pci_hotplug_core.c
295 </sect1>
296 <sect1><title>MCA Architecture</title>
297 <sect2><title>MCA Device Functions</title>
298 <para>
299 Refer to the file arch/i386/kernel/mca.c for more information.
300 </para>
301<!-- FIXME: Removed for now since no structured comments in source
302X!Earch/i386/kernel/mca.c
303-->
304 </sect2>
305 <sect2><title>MCA Bus DMA</title>
306!Iinclude/asm-i386/mca_dma.h
307 </sect2>
308 </sect1>
309 </chapter>
310
311 <chapter id="devfs">
312 <title>The Device File System</title>
313!Efs/devfs/base.c
314 </chapter>
315
316 <chapter id="sysfs">
317 <title>The Filesystem for Exporting Kernel Objects</title>
318!Efs/sysfs/file.c
319!Efs/sysfs/dir.c
320!Efs/sysfs/symlink.c
321!Efs/sysfs/bin.c
322 </chapter>
323
324 <chapter id="security">
325 <title>Security Framework</title>
326!Esecurity/security.c
327 </chapter>
328
329 <chapter id="pmfuncs">
330 <title>Power Management</title>
331!Ekernel/power/pm.c
332 </chapter>
333
334 <chapter id="devdrivers">
335 <title>Device drivers infrastructure</title>
336 <sect1><title>Device Drivers Base</title>
337<!--
338X!Iinclude/linux/device.h
339-->
340!Edrivers/base/driver.c
341!Edrivers/base/core.c
342!Edrivers/base/firmware_class.c
343!Edrivers/base/transport_class.c
344!Edrivers/base/dmapool.c
345<!-- Cannot be included, because
346 attribute_container_add_class_device_adapter
347 and attribute_container_classdev_to_container
348 exceed allowed 44 characters maximum
349X!Edrivers/base/attribute_container.c
350-->
351!Edrivers/base/sys.c
352<!--
353X!Edrivers/base/interface.c
354-->
355!Edrivers/base/platform.c
356!Edrivers/base/bus.c
357 </sect1>
358 <sect1><title>Device Drivers Power Management</title>
359!Edrivers/base/power/main.c
360!Edrivers/base/power/resume.c
361!Edrivers/base/power/suspend.c
362 </sect1>
363 <sect1><title>Device Drivers ACPI Support</title>
364<!-- Internal functions only
365X!Edrivers/acpi/sleep/main.c
366X!Edrivers/acpi/sleep/wakeup.c
367X!Edrivers/acpi/motherboard.c
368X!Edrivers/acpi/bus.c
369-->
370!Edrivers/acpi/scan.c
371<!-- No correct structured comments
372X!Edrivers/acpi/pci_bind.c
373-->
374 </sect1>
375 <sect1><title>Device drivers PnP support</title>
376!Edrivers/pnp/core.c
377<!-- No correct structured comments
378X!Edrivers/pnp/system.c
379 -->
380!Edrivers/pnp/card.c
381!Edrivers/pnp/driver.c
382!Edrivers/pnp/manager.c
383!Edrivers/pnp/support.c
384 </sect1>
385 </chapter>
386
387
388 <chapter id="blkdev">
389 <title>Block Devices</title>
390!Edrivers/block/ll_rw_blk.c
391 </chapter>
392
393 <chapter id="miscdev">
394 <title>Miscellaneous Devices</title>
395!Edrivers/char/misc.c
396 </chapter>
397
398 <chapter id="viddev">
399 <title>Video4Linux</title>
400!Edrivers/media/video/videodev.c
401 </chapter>
402
403 <chapter id="snddev">
404 <title>Sound Devices</title>
405!Iinclude/sound/core.h
406!Esound/sound_core.c
407!Iinclude/sound/pcm.h
408!Esound/core/pcm.c
409!Esound/core/device.c
410!Esound/core/info.c
411!Esound/core/rawmidi.c
412!Esound/core/sound.c
413!Esound/core/memory.c
414!Esound/core/pcm_memory.c
415!Esound/core/init.c
416!Esound/core/isadma.c
417!Esound/core/control.c
418!Esound/core/pcm_lib.c
419!Esound/core/hwdep.c
420!Esound/core/pcm_native.c
421!Esound/core/memalloc.c
422<!-- FIXME: Removed for now since no structured comments in source
423X!Isound/sound_firmware.c
424-->
425 </chapter>
426
427 <chapter id="uart16x50">
428 <title>16x50 UART Driver</title>
429!Iinclude/linux/serial_core.h
430!Edrivers/serial/serial_core.c
431!Edrivers/serial/8250.c
432 </chapter>
433
434 <chapter id="z85230">
435 <title>Z85230 Support Library</title>
436!Edrivers/net/wan/z85230.c
437 </chapter>
438
439 <chapter id="fbdev">
440 <title>Frame Buffer Library</title>
441
442 <para>
443 The frame buffer drivers depend heavily on four data structures.
444 These structures are declared in include/linux/fb.h. They are
445 fb_info, fb_var_screeninfo, fb_fix_screeninfo and fb_monospecs.
446 The last three can be made available to and from userland.
447 </para>
448
449 <para>
450 fb_info defines the current state of a particular video card.
451 Inside fb_info, there exists a fb_ops structure which is a
452 collection of needed functions to make fbdev and fbcon work.
453 fb_info is only visible to the kernel.
454 </para>
455
456 <para>
457 fb_var_screeninfo is used to describe the features of a video card
458 that are user defined. With fb_var_screeninfo, things such as
459 depth and the resolution may be defined.
460 </para>
461
462 <para>
463 The next structure is fb_fix_screeninfo. This defines the
464 properties of a card that are created when a mode is set and can't
465 be changed otherwise. A good example of this is the start of the
466 frame buffer memory. This "locks" the address of the frame buffer
467 memory, so that it cannot be changed or moved.
468 </para>
469
470 <para>
471 The last structure is fb_monospecs. In the old API, there was
472 little importance for fb_monospecs. This allowed for forbidden things
473 such as setting a mode of 800x600 on a fix frequency monitor. With
474 the new API, fb_monospecs prevents such things, and if used
475 correctly, can prevent a monitor from being cooked. fb_monospecs
476 will not be useful until kernels 2.5.x.
477 </para>
478
479 <sect1><title>Frame Buffer Memory</title>
480!Edrivers/video/fbmem.c
481 </sect1>
482<!--
483 <sect1><title>Frame Buffer Console</title>
484X!Edrivers/video/console/fbcon.c
485 </sect1>
486-->
487 <sect1><title>Frame Buffer Colormap</title>
488!Edrivers/video/fbcmap.c
489 </sect1>
490<!-- FIXME:
491 drivers/video/fbgen.c has no docs, which stuffs up the sgml. Comment
492 out until somebody adds docs. KAO
493 <sect1><title>Frame Buffer Generic Functions</title>
494X!Idrivers/video/fbgen.c
495 </sect1>
496KAO -->
497 <sect1><title>Frame Buffer Video Mode Database</title>
498!Idrivers/video/modedb.c
499!Edrivers/video/modedb.c
500 </sect1>
501 <sect1><title>Frame Buffer Macintosh Video Mode Database</title>
502!Idrivers/video/macmodes.c
503 </sect1>
504 <sect1><title>Frame Buffer Fonts</title>
505 <para>
506 Refer to the file drivers/video/console/fonts.c for more information.
507 </para>
508<!-- FIXME: Removed for now since no structured comments in source
509X!Idrivers/video/console/fonts.c
510-->
511 </sect1>
512 </chapter>
513</book>