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 <!-- FIXME:
  53   kernel/sched.c has no docs, which stuffs up the sgml.  Comment
  54   out until somebody adds docs.  KAO
  55      <sect1><title>Delaying, scheduling, and timer routines</title>
  56 X!Ekernel/sched.c
  57      </sect1>
  58 KAO -->
  59   </chapter>
  60
  61   <chapter id="adt">
  62      <title>Data Types</title>
  63      <sect1><title>Doubly Linked Lists</title>
  64 !Iinclude/linux/list.h
  65      </sect1>
  66   </chapter>
  67
  68   <chapter id="libc">
  69      <title>Basic C Library Functions</title>
  70
  71      <para>
  72        When writing drivers, you cannot in general use routines which are
  73        from the C Library.  Some of the functions have been found generally
  74        useful and they are listed below.  The behaviour of these functions
  75        may vary slightly from those defined by ANSI, and these deviations
  76        are noted in the text.
  77      </para>
  78
  79      <sect1><title>String Conversions</title>
  80 !Ilib/vsprintf.c
  81 !Elib/vsprintf.c
  82      </sect1>
  83      <sect1><title>String Manipulation</title>
  84 !Ilib/string.c
  85 !Elib/string.c
  86      </sect1>
  87      <sect1><title>Bit Operations</title>
  88 !Iinclude/asm-i386/bitops.h
  89      </sect1>
  90   </chapter>
  91
  92   <chapter id="mm">
  93      <title>Memory Management in Linux</title>
  94      <sect1><title>The Slab Cache</title>
  95 !Emm/slab.c
  96      </sect1>
  97      <sect1><title>User Space Memory Access</title>
  98 !Iinclude/asm-i386/uaccess.h
  99 !Iarch/i386/lib/usercopy.c
 100      </sect1>
 101   </chapter>
 102
 103   <chapter id="kfifo">
 104      <title>FIFO Buffer</title>
 105      <sect1><title>kfifo interface</title>
 106 !Iinclude/linux/kfifo.h
 107 !Ekernel/kfifo.c
 108      </sect1>
 109   </chapter>
 110
 111   <chapter id="proc">
 112      <title>The proc filesystem</title>
 113
 114      <sect1><title>sysctl interface</title>
 115 !Ekernel/sysctl.c
 116      </sect1>
 117   </chapter>
 118
 119   <chapter id="debugfs">
 120      <title>The debugfs filesystem</title>
 121
 122      <sect1><title>debugfs interface</title>
 123 !Efs/debugfs/inode.c
 124 !Efs/debugfs/file.c
 125      </sect1>
 126   </chapter>
 127
 128   <chapter id="vfs">
 129      <title>The Linux VFS</title>
 130      <sect1><title>The Directory Cache</title>
 131 !Efs/dcache.c
 132 !Iinclude/linux/dcache.h
 133      </sect1>
 134      <sect1><title>Inode Handling</title>
 135 !Efs/inode.c
 136 !Efs/bad_inode.c
 137      </sect1>
 138      <sect1><title>Registration and Superblocks</title>
 139 !Efs/super.c
 140      </sect1>
 141      <sect1><title>File Locks</title>
 142 !Efs/locks.c
 143 !Ifs/locks.c
 144      </sect1>
 145   </chapter>
 146
 147   <chapter id="netcore">
 148      <title>Linux Networking</title>
 149      <sect1><title>Socket Buffer Functions</title>
 150 !Iinclude/linux/skbuff.h
 151 !Enet/core/skbuff.c
 152      </sect1>
 153      <sect1><title>Socket Filter</title>
 154 !Enet/core/filter.c
 155      </sect1>
 156      <sect1><title>Generic Network Statistics</title>
 157 !Iinclude/linux/gen_stats.h
 158 !Enet/core/gen_stats.c
 159 !Enet/core/gen_estimator.c
 160      </sect1>
 161   </chapter>
 162
 163   <chapter id="netdev">
 164      <title>Network device support</title>
 165      <sect1><title>Driver Support</title>
 166 !Enet/core/dev.c
 167      </sect1>
 168      <sect1><title>8390 Based Network Cards</title>
 169 !Edrivers/net/8390.c
 170      </sect1>
 171      <sect1><title>Synchronous PPP</title>
 172 !Edrivers/net/wan/syncppp.c
 173      </sect1>
 174   </chapter>
 175
 176   <chapter id="modload">
 177      <title>Module Support</title>
 178      <sect1><title>Module Loading</title>
 179 !Ekernel/kmod.c
 180      </sect1>
 181      <sect1><title>Inter Module support</title>
 182         <para>
 183            Refer to the file kernel/module.c for more information.
 184         </para>
 185 <!-- FIXME: Removed for now since no structured comments in source
 186 X!Ekernel/module.c
 187 -->
 188      </sect1>
 189   </chapter>
 190
 191   <chapter id="hardware">
 192      <title>Hardware Interfaces</title>
 193      <sect1><title>Interrupt Handling</title>
 194 !Iarch/i386/kernel/irq.c
 195      </sect1>
 196
 197      <sect1><title>MTRR Handling</title>
 198 !Earch/i386/kernel/cpu/mtrr/main.c
 199      </sect1>
 200      <sect1><title>PCI Support Library</title>
 201 !Edrivers/pci/pci.c
 202      </sect1>
 203      <sect1><title>PCI Hotplug Support Library</title>
 204 !Edrivers/pci/hotplug/pci_hotplug_core.c
 205      </sect1>
 206      <sect1><title>MCA Architecture</title>
 207         <sect2><title>MCA Device Functions</title>
 208            <para>
 209               Refer to the file arch/i386/kernel/mca.c for more information.
 210            </para>
 211 <!-- FIXME: Removed for now since no structured comments in source
 212 X!Earch/i386/kernel/mca.c
 213 -->
 214         </sect2>
 215         <sect2><title>MCA Bus DMA</title>
 216 !Iinclude/asm-i386/mca_dma.h
 217         </sect2>
 218      </sect1>
 219   </chapter>
 220
 221   <chapter id="devfs">
 222      <title>The Device File System</title>
 223 !Efs/devfs/base.c
 224   </chapter>
 225
 226   <chapter id="security">
 227      <title>Security Framework</title>
 228 !Esecurity/security.c
 229   </chapter>
 230
 231   <chapter id="pmfuncs">
 232      <title>Power Management</title>
 233 !Ekernel/power/pm.c
 234   </chapter>
 235
 236   <chapter id="blkdev">
 237      <title>Block Devices</title>
 238 !Edrivers/block/ll_rw_blk.c
 239   </chapter>
 240
 241   <chapter id="miscdev">
 242      <title>Miscellaneous Devices</title>
 243 !Edrivers/char/misc.c
 244   </chapter>
 245
 246   <chapter id="viddev">
 247      <title>Video4Linux</title>
 248 !Edrivers/media/video/videodev.c
 249   </chapter>
 250
 251   <chapter id="snddev">
 252      <title>Sound Devices</title>
 253 !Esound/sound_core.c
 254 <!-- FIXME: Removed for now since no structured comments in source
 255 X!Isound/sound_firmware.c
 256 -->
 257   </chapter>
 258
 259   <chapter id="uart16x50">
 260      <title>16x50 UART Driver</title>
 261 !Edrivers/serial/serial_core.c
 262 !Edrivers/serial/8250.c
 263   </chapter>
 264
 265   <chapter id="z85230">
 266      <title>Z85230 Support Library</title>
 267 !Edrivers/net/wan/z85230.c
 268   </chapter>
 269
 270   <chapter id="fbdev">
 271      <title>Frame Buffer Library</title>
 272
 273      <para>
 274        The frame buffer drivers depend heavily on four data structures.
 275        These structures are declared in include/linux/fb.h.  They are
 276        fb_info, fb_var_screeninfo, fb_fix_screeninfo and fb_monospecs.
 277        The last three can be made available to and from userland.
 278      </para>
 279
 280      <para>
 281        fb_info defines the current state of a particular video card.
 282        Inside fb_info, there exists a fb_ops structure which is a
 283        collection of needed functions to make fbdev and fbcon work.
 284        fb_info is only visible to the kernel.
 285      </para>
 286
 287      <para>
 288        fb_var_screeninfo is used to describe the features of a video card
 289        that are user defined.  With fb_var_screeninfo, things such as
 290        depth and the resolution may be defined.
 291      </para>
 292
 293      <para>
 294        The next structure is fb_fix_screeninfo. This defines the
 295        properties of a card that are created when a mode is set and can't
 296        be changed otherwise.  A good example of this is the start of the
 297        frame buffer memory.  This "locks" the address of the frame buffer
 298        memory, so that it cannot be changed or moved.
 299      </para>
 300
 301      <para>
 302        The last structure is fb_monospecs. In the old API, there was
 303        little importance for fb_monospecs. This allowed for forbidden things
 304        such as setting a mode of 800x600 on a fix frequency monitor. With
 305        the new API, fb_monospecs prevents such things, and if used
 306        correctly, can prevent a monitor from being cooked.  fb_monospecs
 307        will not be useful until kernels 2.5.x.
 308      </para>
 309
 310      <sect1><title>Frame Buffer Memory</title>
 311 !Edrivers/video/fbmem.c
 312      </sect1>
 313      <sect1><title>Frame Buffer Console</title>
 314 !Edrivers/video/console/fbcon.c
 315      </sect1>
 316      <sect1><title>Frame Buffer Colormap</title>
 317 !Edrivers/video/fbcmap.c
 318      </sect1>
 319 <!-- FIXME:
 320   drivers/video/fbgen.c has no docs, which stuffs up the sgml.  Comment
 321   out until somebody adds docs.  KAO
 322      <sect1><title>Frame Buffer Generic Functions</title>
 323 X!Idrivers/video/fbgen.c
 324      </sect1>
 325 KAO -->
 326      <sect1><title>Frame Buffer Video Mode Database</title>
 327 !Idrivers/video/modedb.c
 328 !Edrivers/video/modedb.c
 329      </sect1>
 330      <sect1><title>Frame Buffer Macintosh Video Mode Database</title>
 331 !Idrivers/video/macmodes.c
 332      </sect1>
 333      <sect1><title>Frame Buffer Fonts</title>
 334         <para>
 335            Refer to the file drivers/video/console/fonts.c for more information.
 336         </para>
 337 <!-- FIXME: Removed for now since no structured comments in source
 338 X!Idrivers/video/console/fonts.c
 339 -->
 340      </sect1>
 341   </chapter>
 342 </book>