diff options
Diffstat (limited to 'Documentation')
41 files changed, 597 insertions, 3726 deletions
diff --git a/Documentation/00-INDEX b/Documentation/00-INDEX index f08ca953573..8b056363344 100644 --- a/Documentation/00-INDEX +++ b/Documentation/00-INDEX @@ -12,6 +12,8 @@ Following translations are available on the WWW: 00-INDEX - this file. +ABI/ + - info on kernel <-> userspace ABI and relative interface stability. BUG-HUNTING - brute force method of doing binary search of patches to find bug. Changes @@ -25,37 +27,57 @@ DMA-mapping.txt DocBook/ - directory with DocBook templates etc. for kernel documentation. HOWTO - - The process and procedures of how to do Linux kernel development. + - the process and procedures of how to do Linux kernel development. IO-mapping.txt - how to access I/O mapped memory from within device drivers. IPMI.txt - info on Linux Intelligent Platform Management Interface (IPMI) Driver. IRQ-affinity.txt - how to select which CPU(s) handle which interrupt events on SMP. +IRQ.txt + - description of what an IRQ is. ManagementStyle - how to (attempt to) manage kernel hackers. MSI-HOWTO.txt - the Message Signaled Interrupts (MSI) Driver Guide HOWTO and FAQ. +PCIEBUS-HOWTO.txt + - a guide describing the PCI Express Port Bus driver. RCU/ - directory with info on RCU (read-copy update). README.DAC960 - info on Mylex DAC960/DAC1100 PCI RAID Controller Driver for Linux. +README.cycladesZ + - info on Cyclades-Z firmware loading. SAK.txt - info on Secure Attention Keys. +SecurityBugs + - procedure for reporting security bugs found in the kernel. +SubmitChecklist + - Linux kernel patch submission checklist. SubmittingDrivers - procedure to get a new driver source included into the kernel tree. SubmittingPatches - procedure to get a source patch included into the kernel tree. VGA-softcursor.txt - how to change your VGA cursor from a blinking underscore. +accounting/ + - documentation on accounting and taskstats. +aoe/ + - description of AoE (ATA over Ethernet) along with config examples. applying-patches.txt - description of various trees and how to apply their patches. arm/ - directory with info about Linux on the ARM architecture. +atomic_ops.txt + - semantics and behavior of atomic and bitmask operations. +auxdisplay/ + - misc. LCD driver documentation (cfag12864b, ks0108). basic_profiling.txt - basic instructions for those who wants to profile Linux kernel. binfmt_misc.txt - info on the kernel support for extra binary formats. +blackfin/ + - directory with documentation for the Blackfin arch. block/ - info on the Block I/O (BIO) layer. cachetlb.txt @@ -68,16 +90,32 @@ cli-sti-removal.txt - cli()/sti() removal guide. computone.txt - info on Computone Intelliport II/Plus Multiport Serial Driver. +connector/ + - docs on the netlink based userspace<->kernel space communication mod. +console/ + - documentation on Linux console drivers. cpqarray.txt - info on using Compaq's SMART2 Intelligent Disk Array Controllers. cpu-freq/ - info on CPU frequency and voltage scaling. +cpu-hotplug.txt + - document describing CPU hotplug support in the Linux kernel. +cpu-load.txt + - document describing how CPU load statistics are collected. +cpusets.txt + - documents the cpusets feature; assign CPUs and Mem to a set of tasks. +cputopology.txt + - documentation on how CPU topology info is exported via sysfs. cris/ - directory with info about Linux on CRIS architecture. crypto/ - directory with info on the Crypto API. +dcdbas.txt + - information on the Dell Systems Management Base Driver. debugging-modules.txt - some notes on debugging modules after Linux 2.6.3. +dell_rbu.txt + - document demonstrating the use of the Dell Remote BIOS Update driver. device-mapper/ - directory with info on Device Mapper. devices.txt @@ -86,32 +124,52 @@ digiepca.txt - info on Digi Intl. {PC,PCI,EISA}Xx and Xem series cards. dnotify.txt - info about directory notification in Linux. +dontdiff + - file containing a list of files that should never be diff'ed. driver-model/ - directory with info about Linux driver model. +drivers/ + - directory with driver documentation (currently only EDAC). dvb/ - info on Linux Digital Video Broadcast (DVB) subsystem. early-userspace/ - info about initramfs, klibc, and userspace early during boot. +ecryptfs.txt + - docs on eCryptfs: stacked cryptographic filesystem for Linux. eisa.txt - info on EISA bus support. exception.txt - how Linux v2.2 handles exceptions without verify_area etc. +fault-injection/ + - dir with docs about the fault injection capabilities infrastructure. fb/ - directory with info on the frame buffer graphics abstraction layer. +feature-removal-schedule.txt + - list of files and features that are going to be removed. filesystems/ - directory with info on the various filesystems that Linux supports. firmware_class/ - request_firmware() hotplug interface info. floppy.txt - notes and driver options for the floppy disk driver. +fujitsu/ + - Fujitsu FR-V Linux documentation. +gpio.txt + - overview of GPIO (General Purpose Input/Output) access conventions. hayes-esp.txt - info on using the Hayes ESP serial driver. highuid.txt - notes on the change from 16 bit to 32 bit user/group IDs. hpet.txt - High Precision Event Timer Driver for Linux. +hrtimer/ + - info on the timer_stats debugging facility for timer (ab)use. +hrtimers/ + - info on the hrtimers subsystem for high-resolution kernel timers. hw_random.txt - info on Linux support for random number generator in i8xx chipsets. +hwmon/ + - directory with docs on various hardware monitoring drivers. i2c/ - directory with info about the I2C bus/protocol (2 wire, kHz speed). i2o/ @@ -122,16 +180,22 @@ ia64/ - directory with info about Linux on Intel 64 bit architecture. ide.txt - important info for users of ATA devices (IDE/EIDE disks and CD-ROMS). +infiniband/ + - directory with documents concerning Linux InfiniBand support. initrd.txt - how to use the RAM disk as an initial/temporary root filesystem. input/ - info on Linux input device support. io_ordering.txt - info on ordering I/O writes to memory-mapped addresses. +ioctl/ + - directory with documents describing various IOCTL calls. ioctl-number.txt - how to implement and register device/driver ioctl calls. iostats.txt - info on I/O statistics Linux kernel provides. +irqflags-tracing.txt + - how to use the irq-flags tracing feature. isapnp.txt - info on Linux ISA Plug & Play support. isdn/ @@ -140,26 +204,40 @@ java.txt - info on the in-kernel binary support for Java(tm). kbuild/ - directory with info about the kernel build process. -kdumpt.txt - - mini HowTo on getting the crash dump code to work. +kdump/ + - directory with mini HowTo on getting the crash dump code to work. kernel-doc-nano-HOWTO.txt - mini HowTo on generation and location of kernel documentation files. kernel-docs.txt - listing of various WWW + books that document kernel internals. kernel-parameters.txt - summary listing of command line / boot prompt args for the kernel. +keys-request-key.txt + - description of the kernel key request service. +keys.txt + - description of the kernel key retention service. kobject.txt - info of the kobject infrastructure of the Linux kernel. +kprobes.txt + - documents the kernel probes debugging feature. +kref.txt + - docs on adding reference counters (krefs) to kernel objects. laptop-mode.txt - - How to conserve battery power using laptop-mode. + - how to conserve battery power using laptop-mode. ldm.txt - a brief description of LDM (Windows Dynamic Disks). +leds-class.txt + - documents LED handling under Linux. +local_ops.txt + - semantics and behavior of local atomic operations. +lockdep-design.txt + - documentation on the runtime locking correctness validator. locks.txt - info on file locking implementations, flock() vs. fcntl(), etc. logo.gif - - Full colour GIF image of Linux logo (penguin). + - full colour GIF image of Linux logo (penguin - Tux). logo.txt - - Info on creator of above logo & site to get additional images from. + - info on creator of above logo & site to get additional images from. m68k/ - directory with info about Linux on Motorola 68k architecture. magic-number.txt @@ -170,6 +248,8 @@ mca.txt - info on supporting Micro Channel Architecture (e.g. PS/2) systems. md.txt - info on boot arguments for the multiple devices driver. +memory-barriers.txt + - info on Linux kernel memory barriers. memory.txt - info on typical Linux memory problems. mips/ @@ -177,9 +257,11 @@ mips/ mono.txt - how to execute Mono-based .NET binaries with the help of BINFMT_MISC. moxa-smartio - - info on installing/using Moxa multiport serial driver. + - file with info on installing/using Moxa multiport serial driver. mtrr.txt - how to use PPro Memory Type Range Registers to increase performance. +mutex-design.txt + - info on the generic mutex subsystem. nbd.txt - info on a TCP implementation of a network block device. netlabel/ @@ -190,6 +272,8 @@ nfsroot.txt - short guide on setting up a diskless box with NFS root filesystem. nmi_watchdog.txt - info on NMI watchdog for SMP systems. +nommu-mmap.txt + - documentation about no-mmu memory mapping support. numastat.txt - info on how to read Numa policy hit/miss statistics in sysfs. oops-tracing.txt @@ -202,8 +286,16 @@ parport.txt - how to use the parallel-port driver. parport-lowlevel.txt - description and usage of the low level parallel port functions. +pci-error-recovery.txt + - info on PCI error recovery. pci.txt - info on the PCI subsystem for device driver authors. +pcieaer-howto.txt + - the PCI Express Advanced Error Reporting Driver Guide HOWTO. +pcmcia/ + - info on the Linux PCMCIA driver. +pi-futex.txt + - documentation on lightweight PI-futexes. pm.txt - info on Linux power management support. pnp.txt @@ -214,18 +306,32 @@ powerpc/ - directory with info on using Linux with the PowerPC. preempt-locking.txt - info on locking under a preemptive kernel. +prio_tree.txt + - info on radix-priority-search-tree use for indexing vmas. ramdisk.txt - short guide on how to set up and use the RAM disk. +rbtree.txt + - info on what red-black trees are and what they are for. riscom8.txt - notes on using the RISCom/8 multi-port serial driver. +robust-futex-ABI.txt + - documentation of the robust futex ABI. +robust-futexes.txt + - a description of what robust futexes are. rocket.txt - info on the Comtrol RocketPort multiport serial driver. rpc-cache.txt - introduction to the caching mechanisms in the sunrpc layer. +rt-mutex-design.txt + - description of the RealTime mutex implementation design. +rt-mutex.txt + - desc. of RT-mutex subsystem with PI (Priority Inheritance) support. rtc.txt - notes on how to use the Real Time Clock (aka CMOS clock) driver. s390/ - directory with info on using Linux on the IBM S390. +sched-arch.txt + - CPU Scheduler implementation hints for architecture specific code. sched-coding.txt - reference for various scheduler-related methods in the O(1) scheduler. sched-design.txt @@ -240,22 +346,32 @@ serial/ - directory with info on the low level serial API. serial-console.txt - how to set up Linux with a serial line console as the default. +sgi-ioc4.txt + - description of the SGI IOC4 PCI (multi function) device. sgi-visws.txt - short blurb on the SGI Visual Workstations. sh/ - directory with info on porting Linux to a new architecture. +sharedsubtree.txt + - a description of shared subtrees for namespaces. smart-config.txt - description of the Smart Config makefile feature. smp.txt - a few notes on symmetric multi-processing. +sony-laptop.txt + - Sony Notebook Control Driver (SNC) Readme. sonypi.txt - info on Linux Sony Programmable I/O Device support. sound/ - directory with info on sound card support. sparc/ - directory with info on using Linux on Sparc architecture. +sparse.txt + - info on how to obtain and use the sparse tool for typechecking. specialix.txt - info on hardware/driver for specialix IO8+ multiport serial card. +spi/ + - overview of Linux kernel Serial Peripheral Interface (SPI) support. spinlocks.txt - info on using spinlocks to provide exclusive access in kernel. stable_api_nonsense.txt @@ -274,24 +390,32 @@ sysrq.txt - info on the magic SysRq key. telephony/ - directory with info on telephony (e.g. voice over IP) support. +thinkpad-acpi.txt + - information on the (IBM and Lenovo) ThinkPad ACPI Extras driver. time_interpolators.txt - info on time interpolators. tipar.txt - information about Parallel link cable for Texas Instruments handhelds. tty.txt - guide to the locking policies of the tty layer. -unicode.txt - - info on the Unicode character/font mapping used in Linux. uml/ - directory with information about User Mode Linux. +unicode.txt + - info on the Unicode character/font mapping used in Linux. +unshare.txt + - description of the Linux unshare system call. usb/ - directory with info regarding the Universal Serial Bus. +video-output.txt + - sysfs class driver interface to enable/disable a video output device. video4linux/ - directory with info regarding video/TV/radio cards and linux. vm/ - directory with info on the Linux vm code. voyager.txt - guide to running Linux on the Voyager architecture. +w1/ + - directory with documents regarding the 1-wire (w1) subsystem. watchdog/ - how to auto-reboot Linux if it has "fallen and can't get up". ;-) x86_64/ diff --git a/Documentation/CodingStyle b/Documentation/CodingStyle index b49b92edb39..a667eb1fc26 100644 --- a/Documentation/CodingStyle +++ b/Documentation/CodingStyle @@ -218,6 +218,18 @@ no space after the prefix increment & decrement unary operators: and no space around the '.' and "->" structure member operators. +Do not leave trailing whitespace at the ends of lines. Some editors with +"smart" indentation will insert whitespace at the beginning of new lines as +appropriate, so you can start typing the next line of code right away. +However, some such editors do not remove the whitespace if you end up not +putting a line of code there, such as if you leave a blank line. As a result, +you end up with lines containing trailing whitespace. + +Git will warn you about patches that introduce trailing whitespace, and can +optionally strip the trailing whitespace for you; however, if applying a series +of patches, this may make later patches in the series fail by changing their +context lines. + Chapter 4: Naming @@ -726,6 +738,33 @@ need them. Feel free to peruse that header file to see what else is already defined that you shouldn't reproduce in your code. + Chapter 18: Editor modelines and other cruft + +Some editors can interpret configuration information embedded in source files, +indicated with special markers. For example, emacs interprets lines marked +like this: + +-*- mode: c -*- + +Or like this: + +/* +Local Variables: +compile-command: "gcc -DMAGIC_DEBUG_FLAG foo.c" +End: +*/ + +Vim interprets markers that look like this: + +/* vim:set sw=8 noet */ + +Do not include any of these in source files. People have their own personal +editor configurations, and your source files should not override them. This +includes markers for indentation and mode configuration. People may use their +own custom mode, or may have some other magic method for making indentation +work correctly. + + Appendix I: References diff --git a/Documentation/DocBook/procfs-guide.tmpl b/Documentation/DocBook/procfs-guide.tmpl index 45cad23efef..2de84dc195a 100644 --- a/Documentation/DocBook/procfs-guide.tmpl +++ b/Documentation/DocBook/procfs-guide.tmpl @@ -352,49 +352,93 @@ entry->write_proc = write_proc_foo; <funcsynopsis> <funcprototype> <funcdef>int <function>read_func</function></funcdef> - <paramdef>char* <parameter>page</parameter></paramdef> + <paramdef>char* <parameter>buffer</parameter></paramdef> <paramdef>char** <parameter>start</parameter></paramdef> <paramdef>off_t <parameter>off</parameter></paramdef> <paramdef>int <parameter>count</parameter></paramdef> - <paramdef>int* <parameter>eof</parameter></paramdef> + <paramdef>int* <parameter>peof</parameter></paramdef> <paramdef>void* <parameter>data</parameter></paramdef> </funcprototype> </funcsynopsis> <para> The read function should write its information into the - <parameter>page</parameter>. For proper use, the function - should start writing at an offset of - <parameter>off</parameter> in <parameter>page</parameter> and - write at most <parameter>count</parameter> bytes, but because - most read functions are quite simple and only return a small - amount of information, these two parameters are usually - ignored (it breaks pagers like <literal>more</literal> and - <literal>less</literal>, but <literal>cat</literal> still - works). + <parameter>buffer</parameter>, which will be exactly + <literal>PAGE_SIZE</literal> bytes long. </para> <para> - If the <parameter>off</parameter> and - <parameter>count</parameter> parameters are properly used, - <parameter>eof</parameter> should be used to signal that the + The parameter + <parameter>peof</parameter> should be used to signal that the end of the file has been reached by writing <literal>1</literal> to the memory location - <parameter>eof</parameter> points to. + <parameter>peof</parameter> points to. </para> <para> - The parameter <parameter>start</parameter> doesn't seem to be - used anywhere in the kernel. The <parameter>data</parameter> + The <parameter>data</parameter> parameter can be used to create a single call back function for several files, see <xref linkend="usingdata"/>. </para> <para> - The <function>read_func</function> function must return the - number of bytes written into the <parameter>page</parameter>. + The rest of the parameters and the return value are described + by a comment in <filename>fs/proc/generic.c</filename> as follows: </para> + <blockquote> + <para> + You have three ways to return data: + </para> + <orderedlist> + <listitem> + <para> + Leave <literal>*start = NULL</literal>. (This is the default.) + Put the data of the requested offset at that + offset within the buffer. Return the number (<literal>n</literal>) + of bytes there are from the beginning of the + buffer up to the last byte of data. If the + number of supplied bytes (<literal>= n - offset</literal>) is + greater than zero and you didn't signal eof + and the reader is prepared to take more data + you will be called again with the requested + offset advanced by the number of bytes + absorbed. This interface is useful for files + no larger than the buffer. + </para> + </listitem> + <listitem> + <para> + Set <literal>*start</literal> to an unsigned long value less than + the buffer address but greater than zero. + Put the data of the requested offset at the + beginning of the buffer. Return the number of + bytes of data placed there. If this number is + greater than zero and you didn't signal eof + and the reader is prepared to take more data + you will be called again with the requested + offset advanced by <literal>*start</literal>. This interface is + useful when you have a large file consisting + of a series of blocks which you want to count + and return as wholes. + (Hack by Paul.Russell@rustcorp.com.au) + </para> + </listitem> + <listitem> + <para> + Set <literal>*start</literal> to an address within the buffer. + Put the data of the requested offset at <literal>*start</literal>. + Return the number of bytes of data placed there. + If this number is greater than zero and you + didn't signal eof and the reader is prepared to + take more data you will be called again with the + requested offset advanced by the number of bytes + absorbed. + </para> + </listitem> + </orderedlist> + </blockquote> + <para> <xref linkend="example"/> shows how to use a read call back function. diff --git a/Documentation/RCU/checklist.txt b/Documentation/RCU/checklist.txt index f4dffadbcb0..42b01bc2e1b 100644 --- a/Documentation/RCU/checklist.txt +++ b/Documentation/RCU/checklist.txt @@ -222,7 +222,15 @@ over a rather long period of time, but improvements are always welcome! deadlock as soon as the RCU callback happens to interrupt that acquisition's critical section. -13. SRCU (srcu_read_lock(), srcu_read_unlock(), and synchronize_srcu()) +13. RCU callbacks can be and are executed in parallel. In many cases, + the callback code simply wrappers around kfree(), so that this + is not an issue (or, more accurately, to the extent that it is + an issue, the memory-allocator locking handles it). However, + if the callbacks do manipulate a shared data structure, they + must use whatever locking or other synchronization is required + to safely access and/or modify that data structure. + +14. SRCU (srcu_read_lock(), srcu_read_unlock(), and synchronize_srcu()) may only be invoked from process context. Unlike other forms of RCU, it -is- permissible to block in an SRCU read-side critical section (demarked by srcu_read_lock() and srcu_read_unlock()), diff --git a/Documentation/SubmitChecklist b/Documentation/SubmitChecklist index 6ebffb57e3d..19e7f65c269 100644 --- a/Documentation/SubmitChecklist +++ b/Documentation/SubmitChecklist @@ -1,4 +1,4 @@ -Linux Kernel patch sumbittal checklist +Linux Kernel patch submission checklist ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here are some basic things that developers should do if they want to see their @@ -9,7 +9,6 @@ Documentation/SubmittingPatches and elsewhere regarding submitting Linux kernel patches. - 1: Builds cleanly with applicable or modified CONFIG options =y, =m, and =n. No gcc warnings/errors, no linker warnings/errors. diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches index 0958e97d4bf..3f9a7912e69 100644 --- a/Documentation/SubmittingPatches +++ b/Documentation/SubmittingPatches @@ -464,9 +464,25 @@ section Linus Computer Science 101. Nuff said. If your code deviates too much from this, it is likely to be rejected without further review, and without comment. +Once significant exception is when moving code from one file to +another in this case you should not modify the moved code at all in +the same patch which moves it. This clearly delineates the act of +moving the code and your changes. This greatly aids review of the +actual differences and allows tools to better track the history of +the code itself. + Check your patches with the patch style checker prior to submission -(scripts/checkpatch.pl). You should be able to justify all -violations that remain in your patch. +(scripts/checkpatch.pl). The style checker should be viewed as +a guide not as the final word. If your code looks better with +a violation then its probably best left alone. + +The checker reports at three levels: + - ERROR: things that are very likely to be wrong + - WARNING: things requiring careful review + - CHECK: things requiring thought + +You should be able to justify all violations that remain in your +patch. diff --git a/Documentation/accounting/getdelays.c b/Documentation/accounting/getdelays.c index 71acc28ed0d..24c5aade899 100644 --- a/Documentation/accounting/getdelays.c +++ b/Documentation/accounting/getdelays.c @@ -49,6 +49,7 @@ char name[100]; int dbg; int print_delays; int print_io_accounting; +int print_task_context_switch_counts; __u64 stime, utime; #define PRINTF(fmt, arg...) { \ @@ -195,7 +196,7 @@ void print_delayacct(struct taskstats *t) "IO %15s%15s\n" " %15llu%15llu\n" "MEM %15s%15s\n" - " %15llu%15llu\n\n", + " %15llu%15llu\n" "count", "real total", "virtual total", "delay total", t->cpu_count, t->cpu_run_real_total, t->cpu_run_virtual_total, t->cpu_delay_total, @@ -204,6 +205,14 @@ void print_delayacct(struct taskstats *t) "count", "delay total", t->swapin_count, t->swapin_delay_total); } +void task_context_switch_counts(struct taskstats *t) +{ + printf("\n\nTask %15s%15s\n" + " %15lu%15lu\n", + "voluntary", "nonvoluntary", + t->nvcsw, t->nivcsw); +} + void print_ioacct(struct taskstats *t) { printf("%s: read=%llu, write=%llu, cancelled_write=%llu\n", @@ -235,7 +244,7 @@ int main(int argc, char *argv[]) struct msgtemplate msg; while (1) { - c = getopt(argc, argv, "diw:r:m:t:p:vl"); + c = getopt(argc, argv, "qdiw:r:m:t:p:vl"); if (c < 0) break; @@ -248,6 +257,10 @@ int main(int argc, char *argv[]) printf("printing IO accounting\n"); print_io_accounting = 1; break; + case 'q': + printf("printing task/process context switch rates\n"); + print_task_context_switch_counts = 1; + break; case 'w': logfile = strdup(optarg); printf("write to file %s\n", logfile); @@ -389,6 +402,8 @@ int main(int argc, char *argv[]) print_delayacct((struct taskstats *) NLA_DATA(na)); if (print_io_accounting) print_ioacct((struct taskstats *) NLA_DATA(na)); + if (print_task_context_switch_counts) + task_context_switch_counts((struct taskstats *) NLA_DATA(na)); if (fd) { if (write(fd, NLA_DATA(na), na->nla_len) < 0) { err(1,"write error\n"); diff --git a/Documentation/accounting/taskstats-struct.txt b/Documentation/accounting/taskstats-struct.txt index 661c797eaf7..8aa7529f825 100644 --- a/Documentation/accounting/taskstats-struct.txt +++ b/Documentation/accounting/taskstats-struct.txt @@ -22,6 +22,8 @@ There are three different groups of fields in the struct taskstats: /* Extended accounting fields end */ Their values are collected if CONFIG_TASK_XACCT is set. +4) Per-task and per-thread context switch count statistics + Future extension should add fields to the end of the taskstats struct, and should not change the relative position of each field within the struct. @@ -158,4 +160,8 @@ struct taskstats { /* Extended accounting fields end */ +4) Per-task and per-thread statistics + __u64 nvcsw; /* Context voluntary switch counter */ + __u64 nivcsw; /* Context involuntary switch counter */ + } diff --git a/Documentation/cdrom/00-INDEX b/Documentation/cdrom/00-INDEX index 916dafe29d3..433edf23dc4 100644 --- a/Documentation/cdrom/00-INDEX +++ b/Documentation/cdrom/00-INDEX @@ -2,32 +2,10 @@ - this file (info on CD-ROMs and Linux) Makefile - only used to generate TeX output from the documentation. -aztcd - - info on Aztech/Orchid/Okano/Wearnes/Conrad/CyCDROM driver. cdrom-standard.tex - LaTeX document on standardizing the CD-ROM programming interface. -cdu31a - - info on the Sony CDU31A/CDU33A CD-ROM driver. -cm206 - - info on the Philips/LMS cm206/cm260 CD-ROM driver. -gscd - - info on the Goldstar R420 CD-ROM driver. ide-cd - info on setting up and using ATAPI (aka IDE) CD-ROMs. -isp16 - - info on the CD-ROM interface on ISP16, MAD16 or Mozart sound card. -mcd - - info on limitations of standard Mitsumi CD-ROM driver. -mcdx - - info on improved Mitsumi CD-ROM driver. -optcd - - info on the Optics Storage 8000 AT CD-ROM driver packet-writing.txt - Info on the CDRW packet writing module -sbpcd - - info on the SoundBlaster/Panasonic CD-ROM interface driver. -sjcd - - info on the SANYO CDR-H94A CD-ROM interface driver. -sonycd535 - - info on the Sony CDU-535 (and 531) CD-ROM driver. diff --git a/Documentation/cdrom/aztcd b/Documentation/cdrom/aztcd deleted file mode 100644 index 6bf0290ef7c..00000000000 --- a/Documentation/cdrom/aztcd +++ /dev/null @@ -1,822 +0,0 @@ -$Id: README.aztcd,v 2.60 1997/11/29 09:51:25 root Exp root $ - Readme-File Documentation/cdrom/aztcd - for - AZTECH CD-ROM CDA268-01A, ORCHID CD-3110, - OKANO/WEARNES CDD110, CONRAD TXC, CyCDROM CR520, CR540 - CD-ROM Drives - Version 2.6 and newer - (for other drives see 6.-8.) - -NOTE: THIS DRIVER WILL WORK WITH THE CD-ROM DRIVES LISTED, WHICH HAVE - A PROPRIETARY INTERFACE (implemented on a sound card or on an - ISA-AT-bus card). - IT WILL DEFINITELY NOT WORK WITH CD-ROM DRIVES WITH *IDE*-INTERFACE, - such as the Aztech CDA269-031SE !!! (The only known exceptions are - 'faked' IDE drives like the CyCDROM CR520ie which work with aztcd - under certain conditions, see 7.). IF YOU'RE USING A CD-ROM DRIVE - WITH IDE-INTERFACE, SOMETIMES ALSO CALLED ATAPI-COMPATIBLE, PLEASE - USE THE ide-cd.c DRIVER, WRITTEN BY MARK LORD AND SCOTT SNYDER ! - THE STANDARD-KERNEL 1.2.x NOW ALSO SUPPORTS IDE-CDROM-DRIVES, SEE THE - HARDDISK (!) SECTION OF make config, WHEN COMPILING A NEW KERNEL!!! ----------------------------------------------------------------------------- - -Contents of this file: - 1. NOTE - 2. INSTALLATION - 3. CONFIGURING YOUR KERNEL - 4. RECOMPILING YOUR KERNEL - 4.1 AZTCD AS A RUN-TIME LOADABLE MODULE - 4.2 CDROM CONNECTED TO A SOUNDCARD - 5. KNOWN PROBLEMS, FUTURE DEVELOPMENTS - 5.1 MULTISESSION SUPPORT - 5.2 STATUS RECOGNITION - 5.3 DOSEMU's CDROM SUPPORT - 6. BUG REPORTS - 7. OTHER DRIVES - 8. IF YOU DON'T SUCCEED ... DEBUGGING - 9. TECHNICAL HISTORY OF THE DRIVER - 10. ACKNOWLEDGMENTS - 11. PROGRAMMING ADD ONS: CDPLAY.C - APPENDIX: Source code of cdplay.c ----------------------------------------------------------------------------- - -1. NOTE -This software has been successfully in alpha and beta test and is part of -the standard kernel since kernel 1.1.8x since December 1994. It works with -AZTECH CDA268-01A, ORCHID CDS-3110, ORCHID/WEARNES CDD110 and CONRAD TXC -(Nr.99 31 23 -series 04) and has proven to be stable with kernel -versions 1.0.9 and newer. But with any software there still may be bugs in it. -So if you encounter problems, you are invited to help us improve this software. -Please send me a detailed bug report (see chapter BUG REPORTS). You are also -invited in helping us to increase the number of drives, which are supported. - -Please read the README-files carefully and always keep a backup copy of your -old kernel, in order to reboot if something goes wrong! - -2. INSTALLATION -The driver consists of a header file 'aztcd.h', which normally should reside -in /usr/src/linux/drivers/cdrom and the source code 'aztcd.c', which normally -resides in the same place. It uses /dev/aztcd (/dev/aztcd0 in some distri- -butions), which must be a valid block device with major number 29 and reside -in directory /dev. To mount a CD-ROM, your kernel needs to have the ISO9660- -filesystem support included. - -PLEASE NOTE: aztcd.c has been developed in parallel to the linux kernel, -which had and is having many major and minor changes which are not backward -compatible. Quite definitely aztcd.c version 1.80 and newer will NOT work -in kernels older than 1.3.33. So please always use the most recent version -of aztcd.c with the appropriate linux-kernel. - -3. CONFIGURING YOUR KERNEL -If your kernel is already configured for using the AZTECH driver you will -see the following message while Linux boots: - Aztech CD-ROM Init: DriverVersion=<version number> BaseAddress=<baseaddress> - Aztech CD-ROM Init: FirmwareVersion=<firmware version id of your I/O-card>>> - Aztech CD-ROM Init: <drive type> detected - Aztech CD-ROM Init: End -If the message looks different and you are sure to have a supported drive, -it may have a different base address. The Aztech driver does look for the -CD-ROM drive at the base address specified in aztcd.h at compile time. This -address can be overwritten by boot parameter aztcd=....You should reboot and -start Linux with boot parameter aztcd=<base address>, e.g. aztcd=0x320. If -you do not know the base address, start your PC with DOS and look at the boot -message of your CD-ROM's DOS driver. If that still does not help, use boot -parameter aztcd=<base address>,0x79 , this tells aztcd to try a little harder. -aztcd may be configured to use autoprobing the base address by recompiling -it (see chapter 4.). - -If the message looks correct, as user 'root' you should be able to mount the -drive by - mount -t iso9660 -r /dev/aztcd0 /mnt -and use it as any other filesystem. (If this does not work, check if -/dev/aztcd0 and /mnt do exist and create them, if necessary by doing - mknod /dev/aztcd0 b 29 0 - mkdir /mnt - -If you still get a different message while Linux boots or when you get the -message, that the ISO9660-filesystem is not supported by your kernel, when -you try to mount the CD-ROM drive, you have to recompile your kernel. - -If you do *not* have an Aztech/Orchid/Okano/Wearnes/TXC drive and want to -bypass drive detection during Linux boot up, start with boot parameter aztcd=0. - -Most distributions nowadays do contain a boot disk image containing aztcd. -Please note, that this driver will not work with IDE/ATAPI drives! With these -you must use ide-cd.c instead. - -4. RECOMPILING YOUR KERNEL -If your kernel is not yet configured for the AZTECH driver and the ISO9660- -filesystem, you have to recompile your kernel: - -- Edit aztcd.h to set the I/O-address to your I/O-Base address (AZT_BASE_ADDR), - the driver does not use interrupts or DMA, so if you are using an AZTECH - CD268, an ORCHID CD-3110 or ORCHID/WEARNES CDD110 that's the only item you - have to set up. If you have a soundcard, read chapter 4.2. - Users of other drives should read chapter OTHER DRIVES of this file. - You also can configure that address by kernel boot parameter aztcd=... -- aztcd may be configured to use autoprobing the base address by setting - AZT_BASE_ADDR to '-1'. In that case aztcd probes the addresses listed - under AZT_BASE_AUTO. But please remember, that autoprobing always may - incorrectly influence other hardware components too! -- There are some other points, which may be configured, e.g. auto-eject the - CD when unmounting a drive, tray locking etc., see aztcd.h for details. -- If you're using a linux kernel version prior to 2.1.0, in aztcd.h - uncomment the line '#define AZT_KERNEL_PRIOR_2_1' -- Build a new kernel, configure it for 'Aztech/Orchid/Okano/Wearnes support' - (if you want aztcd to be part of the kernel). Do not configure it for - 'Aztech... support', if you want to use aztcd as a run time loadable module. - But in any case you must have the ISO9660-filesystem included in your - kernel. -- Activate the new kernel, normally this is done by running LILO (don't for- - get to configure it before and to keep a copy of your old kernel in case - something goes wrong!). -- Reboot -- If you've included aztcd in your kernel, you now should see during boot - some messages like - Aztech CD-ROM Init: DriverVersion=<version number> BaseAddress=<baseaddress> - Aztech CD-ROM Init: FirmwareVersion=<firmware version id of your I/O-card> - Aztech CD-ROM Init: <drive type> detected - Aztech CD-ROM Init: End -- If you have not included aztcd in your kernel, but want to load aztcd as a - run time loadable module see 4.1. -- If the message looks correct, as user 'root' you should be able to mount - the drive by - mount -t iso9660 -r /dev/aztcd0 /mnt - and use it as any other filesystem. (If this does not work, check if - /dev/aztcd0 and /mnt do exist and create them, if necessary by doing - mknod /dev/aztcd0 b 29 0 - mkdir /mnt -- If this still does not help, see chapters OTHER DRIVES and DEBUGGING. - -4.1 AZTCD AS A RUN-TIME LOADABLE MODULE -If you do not need aztcd permanently, you can also load and remove the driver -during runtime via insmod and rmmod. To build aztcd as a loadable module you -must configure your kernel for AZTECH module support (answer 'm' when con- -figuring the kernel). Anyhow, you may run into problems, if the version of -your boot kernel is not the same than the source kernel version, from which -you create the modules. So rebuild your kernel, if necessary. - -Now edit the base address of your AZTECH interface card in -/usr/src/linux/drivers/cdrom/aztcd.h to the appropriate value. -aztcd may be configured to use autoprobing the base address by setting -AZT_BASE_ADDR to '-1'. In that case aztcd probes the addresses listed -under AZT_BASE_AUTO. But please remember, that autoprobing always may -incorrectly influence other hardware components too! -There are also some special features which may be configured, e.g. -auto-eject a CD when unmounting the drive etc; see aztcd.h for details. -Then change to /usr/src/linux and do a - make modules - make modules_install -After that you can run-time load the driver via - insmod /lib/modules/X.X.X/misc/aztcd.o -and remove it via rmmod aztcd. -If you did not set the correct base address in aztcd.h, you can also supply the -base address when loading the driver via - insmod /lib/modules/X.X.X/misc/aztcd.o aztcd=<base address> -Again specifying aztcd=-1 will cause autoprobing. -If you do not have the iso9660-filesystem in your boot kernel, you also have -to load it before you can mount the CDROM: - insmod /lib/modules/X.X.X/fs/isofs.o -The mount procedure works as described in 4. above. -(In all commands 'X.X.X' is the current linux kernel version number) - -4.2 CDROM CONNECTED TO A SOUNDCARD -Most soundcards do have a bus interface to the CDROM-drive. In many cases -this soundcard needs to be configured, before the CDROM can be used. This -configuration procedure consists of writing some kind of initialization -data to the soundcard registers. The AZTECH-CDROM driver in the moment does -only support one type of soundcard (SoundWave32). Users of other soundcards -should try to boot DOS first and let their DOS drivers initialize the -soundcard and CDROM, then warm boot (or use loadlin) their PC to start -Linux. -Support for the CDROM-interface of SoundWave32-soundcards is directly -implemented in the AZTECH driver. Please edit linux/drivers/cdrom/aztdc.h, -uncomment line '#define AZT_SW32' and set the appropriate value for -AZT_BASE_ADDR and AZT_SW32_BASE_ADDR. This support was tested with an Orchid -CDS-3110 connected to a SoundWave32. -If you want your soundcard to be supported, find out, how it needs to be -configured and mail me (see 6.) the appropriate information. - -5. KNOWN PROBLEMS, FUTURE DEVELOPMENTS -5.1 MULTISESSION SUPPORT -Multisession support for CD's still is a myth. I implemented and tested a basic -support for multisession and XA CDs, but I still have not enough CDs and appli- -cations to test it rigorously. So if you'd like to help me, please contact me -(Email address see below). As of version 1.4 and newer you can enable the -multisession support in aztcd.h by setting AZT_MULTISESSION to 1. Doing so -will cause the ISO9660-filesystem to deal with multisession CDs, ie. redirect -requests to the Table of Contents (TOC) information from the last session, -which contains the info of all previous sessions etc.. If you do set -AZT_MULTISESSION to 0, you can use multisession CDs anyway. In that case the -drive's firmware will do automatic redirection. For the ISO9660-filesystem any -multisession CD will then look like a 'normal' single session CD. But never- -theless the data of all sessions are viewable and accessible. So with practical- -ly all real world applications you won't notice the difference. But as future -applications may make use of advanced multisession features, I've started to -implement the interface for the ISO9660 multisession interface via ioctl -CDROMMULTISESSION. - -5.2 STATUS RECOGNITION -The drive status recognition does not work correctly in all cases. Changing -a disk or having the door open, when a drive is already mounted, is detected -by the Aztech driver itself, but nevertheless causes multiple read attempts -by the different layers of the ISO9660-filesystem driver, which finally timeout, -so you have to wait quite a little... But isn't it bad style to change a disk -in a mounted drive, anyhow ?! - -The driver uses busy wait in most cases for the drive handshake (macros -STEN_LOW and DTEN_LOW). I tested with a 486/DX2 at 66MHz and a Pentium at -60MHz and 90MHz. Whenever you use a much faster machine you are likely to get -timeout messages. In that case edit aztcd.h and increase the timeout value -AZT_TIMEOUT. - -For some 'slow' drive commands I implemented waiting with a timer waitqueue -(macro STEN_LOW_WAIT). If you get this timeout message, you may also edit -aztcd.h and increase the timeout value AZT_STATUS_DELAY. The waitqueue has -shown to be a little critical. If you get kernel panic messages, edit aztcd.c -and substitute STEN_LOW_WAIT by STEN_LOW. Busy waiting with STEN_LOW is more -stable, but also causes CPU overhead. - -5.3 DOSEMU's CD-ROM SUPPORT -With release 1.20 aztcd was modified to allow access to CD-ROMS when running -under dosemu-0.60.0 aztcd-versions before 1.20 are most likely to crash -Linux, when a CD-ROM is accessed under dosemu. This problem has partly been -fixed, but still when accessing a directory for the first time the system -might hang for some 30sec. So be patient, when using dosemu's CD-ROM support -in combination with aztcd :-) ! -This problem has now (July 1995) been fixed by a modification to dosemu's -CD-ROM driver. The new version came with dosemu-0.60.2, see dosemu's -README.CDROM. - -6. BUG REPORTS -Please send detailed bug reports and bug fixes via EMail to - - Werner.Zimmermann@fht-esslingen.de - -Please include a description of your CD-ROM drive type and interface card, -the exact firmware message during Linux bootup, the version number of the -AZTECH-CDROM-driver and the Linux kernel version. Also a description of your -system's other hardware could be of interest, especially microprocessor type, -clock frequency, other interface cards such as soundcards, ethernet adapter, -game cards etc.. - -I will try to collect the reports and make the necessary modifications from -time to time. I may also come back to you directly with some bug fixes and -ask you to do further testing and debugging. - -Editors of CD-ROMs are invited to send a 'cooperation' copy of their -CD-ROMs to the volunteers, who provided the CD-ROM support for Linux. My -snail mail address for such 'stuff' is - Prof. Dr. W. Zimmermann - Fachhochschule fuer Technik Esslingen - Fachbereich IT - Flandernstrasse 101 - D-73732 Esslingen - Germany - - -7. OTHER DRIVES -The following drives ORCHID CDS3110, OKANO CDD110, WEARNES CDD110 and Conrad -TXC Nr. 993123-series 04 nearly look the same as AZTECH CDA268-01A, especially -they seem to use the same command codes. So it was quite simple to make the -AZTECH driver work with these drives. - -Unfortunately I do not have any of these drives available, so I couldn't test -it myself. In some installations, it seems necessary to initialize the drive -with the DOS driver before (especially if combined with a sound card) and then -do a warm boot (CTRL-ALT-RESET) or start Linux from DOS, e.g. with 'loadlin'. - -If you do not succeed, read chapter DEBUGGING. Thanks in advance! - -Sorry for the inconvenience, but it is difficult to develop for hardware, -which you don't have available for testing. So if you like, please help us. - -If you do have a CyCDROM CR520ie thanks to Hilmar Berger's help your chances -are good, that it will work with aztcd. The CR520ie is sold as an IDE-drive -and really is connected to the IDE interface (primary at 0x1F0 or secondary -at 0x170, configured as slave, not as master). Nevertheless it is not ATAPI -compatible but still uses Aztech's command codes. - - -8. DEBUGGING : IF YOU DON'T SUCCEED, TRY THE FOLLOWING --reread the complete README file --make sure, that your drive is hardware configured for - transfer mode: polled - IRQ: not used - DMA: not used - Base Address: something like 300, 320 ... - You can check this, when you start the DOS driver, which came with your - drive. By appropriately configuring the drive and the DOS driver you can - check, whether your drive does operate in this mode correctly under DOS. If - it does not operate under DOS, it won't under Linux. - If your drive's base address is something like 0x170 or 0x1F0 (and it is - not a CyCDROM CR520ie or CR 940ie) you most likely are having an IDE/ATAPI- - compatible drive, which is not supported by aztcd.c, use ide-cd.c instead. - Make sure the Base Address is configured correctly in aztcd.h, also make - sure, that /dev/aztcd0 exists with the correct major number (compare it with - the entry in file /usr/include/linux/major.h for the Aztech drive). --insert a CD-ROM and close the tray --cold boot your PC (i.e. via the power on switch or the reset button) --if you start Linux via DOS, e.g. using loadlin, make sure, that the DOS - driver for the CD-ROM drive is not loaded (comment out the calling lines - in DOS' config.sys!) --look for the aztcd: init message during Linux init and note them exactly --log in as root and do a mount -t iso9660 /dev/aztcd0 /mnt --if you don't succeed in the first time, try several times. Try also to open - and close the tray, then mount again. Please note carefully all commands - you typed in and the aztcd-messages, which you get. --if you get an 'Aztech CD-ROM init: aborted' message, read the remarks about - the version string below. - -If this does not help, do the same with the following differences --start DOS before; make now sure, that the DOS driver for the CD-ROM is - loaded under DOS (i.e. uncomment it again in config.sys) --warm boot your PC (i.e. via CTRL-ALT-DEL) - if you have it, you can also start via loadlin (try both). - ... - Again note all commands and the aztcd-messages. - -If you see STEN_LOW or STEN_LOW_WAIT error messages, increase the timeout -values. - -If this still does not help, --look in aztcd.c for the lines #if 0 - #define AZT_TEST1 - ... - #endif - and substitute '#if 0' by '#if 1'. --recompile your kernel and repeat the above two procedures. You will now get - a bundle of debugging messages from the driver. Again note your commands - and the appropriate messages. If you have syslogd running, these messages - may also be found in syslogd's kernel log file. Nevertheless in some - installations syslogd does not yet run, when init() is called, thus look for - the aztcd-messages during init, before the login-prompt appears. - Then look in aztcd.c, to find out, what happened. The normal calling sequence - is: aztcd_init() during Linux bootup procedure init() - after doing a 'mount -t iso9660 /dev/aztcd0 /mnt' the normal calling sequence is - aztcd_open() -> Status 2c after cold reboot with CDROM or audio CD inserted - -> Status 8 after warm reboot with CDROM inserted - -> Status 2e after cold reboot with no disk, closed tray - -> Status 6e after cold reboot, mount with door open - aztUpdateToc() - aztGetDiskInfo() - aztGetQChannelInfo() repeated several times - aztGetToc() - aztGetQChannelInfo() repeated several times - a list of track information - do_aztcd_request() } - azt_transfer() } repeated several times - azt_poll } - Check, if there is a difference in the calling sequence or the status flags! - - There are a lot of other messages, eg. the ACMD-command code (defined in - aztcd.h), status info from the getAztStatus-command and the state sequence of - the finite state machine in azt_poll(). The most important are the status - messages, look how they are defined and try to understand, if they make - sense in the context where they appear. With a CD-ROM inserted the status - should always be 8, except in aztcd_open(). Try to open the tray, insert an - audio disk, insert no disk or reinsert the CD-ROM and check, if the status - bits change accordingly. The status bits are the most likely point, where - the drive manufacturers may implement changes. - -If you still don't succeed, a good point to start is to look in aztcd.c in -function aztcd_init, where the drive should be detected during init. Do the -following: --reboot the system with boot parameter 'aztcd=<your base address>,0x79'. With - parameter 0x79 most of the drive version detection is bypassed. After that - you should see the complete version string including leading and trailing - blanks during init. - Now adapt the statement - if ((result[1]=='A')&&(result[2]=='Z' ...) - in aztcd_init() to exactly match the first 3 or 4 letters you have seen. --Another point is the 'smart' card detection feature in aztcd_init(). Normally - the CD-ROM drive is ready, when aztcd_init is trying to read the version - string and a time consuming ACMD_SOFT_RESET command can be avoided. This is - detected by looking, if AFL_OP_OK can be read correctly. If the CD-ROM drive - hangs in some unknown state, e.g. because of an error before a warm start or - because you first operated under DOS, even the version string may be correct, - but the following commands will not. Then change the code in such a way, - that the ACMD_SOFT_RESET is issued in any case, by substituting the - if-statement 'if ( ...=AFL_OP_OK)' by 'if (1)'. - -If you succeed, please mail me the exact version string of your drive and -the code modifications, you have made together with a short explanation. -If you don't succeed, you may mail me the output of the debugging messages. -But remember, they are only useful, if they are exact and complete and you -describe in detail your hardware setup and what you did (cold/warm reboot, -with/without DOS, DOS-driver started/not started, which Linux-commands etc.) - - -9. TECHNICAL HISTORY OF THE DRIVER -The AZTECH-Driver is a rework of the Mitsumi-Driver. Four major items had to -be reworked: - -a) The Mitsumi drive does issue complete status information acknowledging -each command, the Aztech drive does only signal that the command was -processed. So whenever the complete status information is needed, an extra -ACMD_GET_STATUS command is issued. The handshake procedure for the drive -can be found in the functions aztSendCmd(), sendAztCmd() and getAztStatus(). - -b) The Aztech Drive does not have a ACMD_GET_DISK_INFO command, so the -necessary info about the number of tracks (firstTrack, lastTrack), disk -length etc. has to be read from the TOC in the lead in track (see function -aztGetDiskInfo()). - -c) Whenever data is read from the drive, the Mitsumi drive is started with a -command to read an indefinite (0xffffff) number of sectors. When the appropriate -number of sectors is read, the drive is stopped by a ACDM_STOP command. This -does not work with the Aztech drive. I did not find a way to stop it. The -stop and pause commands do only work in AUDIO mode but not in DATA mode. -Therefore I had to modify the 'finite state machine' in function azt_poll to -only read a certain number of sectors and then start a new read on demand. As I -have not completely understood, how the buffer/caching scheme of the Mitsumi -driver was implemented, I am not sure, if I have covered all cases correctly, -whenever you get timeout messages, the bug is most likely to be in that -function azt_poll() around switch(cmd) .... case ACD_S_DATA. - -d) I did not get information about changing drive mode. So I doubt, that the -code around function azt_poll() case AZT_S_MODE does work. In my test I have -not been able to switch to reading in raw mode. For reading raw mode, Aztech -uses a different command than for cooked mode, which I only have implemen- -ted in the ioctl-section but not in the section which is used by the ISO9660. - -The driver was developed on an AST PC with Intel 486/DX2, 8MB RAM, 340MB IDE -hard disk and on an AST PC with Intel Pentium 60MHz, 16MB RAM, 520MB IDE -running Linux kernel version 1.0.9 from the LST 1.8 Distribution. The kernel -was compiled with gcc.2.5.8. My CD-ROM drive is an Aztech CDA268-01A. My -drive says, that it has Firmware Version AZT26801A1.3. It came with an ISA-bus -interface card and works with polled I/O without DMA and without interrupts. -The code for all other drives was 'remote' tested and debugged by a number of -volunteers on the Internet. - -Points, where I feel that possible problems might be and all points where I -did not completely understand the drive's behaviour or trust my own code are -marked with /*???*/ in the source code. There are also some parts in the -Mitsumi driver, where I did not completely understand their code. - - -10. ACKNOWLEDGMENTS -Without the help of P.Bush, Aztech, who delivered technical information -about the Aztech Drive and without the help of E.Moenkeberg, GWDG, who did a -great job in analyzing the command structure of various CD-ROM drives, this -work would not have been possible. E.Moenkeberg was also a great help in -making the software 'kernel ready' and in answering many of the CDROM-related -questions in the newsgroups. He really is *the* Linux CD-ROM guru. Thanks -also to all the guys on the Internet, who collected valuable technical -information about CDROMs. - -Joe Nardone (joe@access.digex.net) was a patient tester even for my first -trial, which was more than slow, and made suggestions for code improvement. -Especially the 'finite state machine' azt_poll() was rewritten by Joe to get -clean C code and avoid the ugly 'gotos', which I copied from mcd.c. - -Robby Schirmer (schirmer@fmi.uni-passau.de) tested the audio stuff (ioctls) -and suggested a lot of patches for them. - -Joseph Piskor and Peter Nugent were the first users with the ORCHID CD3110 -and also were very patient with the problems which occurred. - -Reinhard Max delivered the information for the CDROM-interface of the -SoundWave32 soundcards. - -Jochen Kunz and Olaf Kaluza delivered the information for supporting Conrad's -TXC drive. - -Hilmar Berger delivered the patches for supporting CyCDROM CR520ie. - -Anybody, who is interested in these items should have a look at 'ftp.gwdg.de', -directory 'pub/linux/cdrom' and at 'ftp.cdrom.com', directory 'pub/cdrom'. - -11. PROGRAMMING ADD ONs: cdplay.c -You can use the ioctl-functions included in aztcd.c in your own programs. As -an example on how to do this, you will find a tiny CD Player for audio CDs -named 'cdplay.c'. It allows you to play audio CDs. You can play a specified -track, pause and resume or skip tracks forward and backwards. If you quit the -program without stopping the drive, playing is continued. You can also -(mis)use cdplay to read and hexdump data disks. You can find the code in the -APPENDIX of this file, which you should cut out with an editor and store in a -separate file 'cdplay.c'. To compile it and make it executable, do - gcc -s -Wall -O2 -L/usr/lib cdplay.c -o /usr/local/bin/cdplay # compiles it - chmod +755 /usr/local/bin/cdplay # makes it executable - ln -s /dev/aztcd0 /dev/cdrom # creates a link - (for /usr/lib substitute the top level directory, where your include files - reside, and for /usr/local/bin the directory, where you want the executable - binary to reside ) - -You have to set the correct permissions for cdplay *and* for /dev/mcd0 or -/dev/aztcd0 in order to use it. Remember, that you should not have /dev/cdrom -mounted, when you're playing audio CDs. - -This program is just a hack for testing the ioctl-functions in aztcd.c. I will -not maintain it, so if you run into problems, discard it or have a look into -the source code 'cdplay.c'. The program does only contain a minimum of user -protection and input error detection. If you use the commands in the wrong -order or if you try to read a CD at wrong addresses, you may get error messages -or even hang your machine. If you get STEN_LOW, STEN_LOW_WAIT or segment violation -error messages when using cdplay, after that, the system might not be stable -any more, so you'd better reboot. As the ioctl-functions run in kernel mode, -most normal Linux-multitasking protection features do not work. By using -uninitialized 'wild' pointers etc., it is easy to write to other users' data -and program areas, destroy kernel tables etc.. So if you experiment with ioctls -as always when you are doing systems programming and kernel hacking, you -should have a backup copy of your system in a safe place (and you also -should try restoring from a backup copy first)! - -A reworked and improved version called 'cdtester.c', which has yet more -features for testing CDROM-drives can be found in -Documentation/cdrom/sbpcd, written by E.Moenkeberg. - -Werner Zimmermann -Fachhochschule fuer Technik Esslingen -(EMail: Werner.Zimmermann@fht-esslingen.de) -October, 1997 - ---------------------------------------------------------------------------- -APPENDIX: Source code of cdplay.c - -/* Tiny Audio CD Player - - Copyright 1994, 1995, 1996 Werner Zimmermann (Werner.Zimmermann@fht-esslingen.de) - -This program originally was written to test the audio functions of the -AZTECH.CDROM-driver, but it should work with every CD-ROM drive. Before -using it, you should set a symlink from /dev/cdrom to your real CDROM -device. - -The GNU General Public License applies to this program. - -History: V0.1 W.Zimmermann: First release. Nov. 8, 1994 - V0.2 W.Zimmermann: Enhanced functionality. Nov. 9, 1994 - V0.3 W.Zimmermann: Additional functions. Nov. 28, 1994 - V0.4 W.Zimmermann: fixed some bugs. Dec. 17, 1994 - V0.5 W.Zimmermann: clean 'scanf' commands without compiler warnings - Jan. 6, 1995 - V0.6 W.Zimmermann: volume control (still experimental). Jan. 24, 1995 - V0.7 W.Zimmermann: read raw modified. July 26, 95 -*/ - -#include <stdio.h> -#include <ctype.h> -#include <sys/ioctl.h> -#include <sys/types.h> -#include <fcntl.h> -#include <unistd.h> -#include <linux/cdrom.h> -#include <linux/../../drivers/cdrom/aztcd.h> - -void help(void) -{ printf("Available Commands: STOP s EJECT/CLOSE e QUIT q\n"); - printf(" PLAY TRACK t PAUSE p RESUME r\n"); - printf(" NEXT TRACK n REPEAT LAST l HELP h\n"); - printf(" SUB CHANNEL c TRACK INFO i PLAY AT a\n"); - printf(" READ d READ RAW w VOLUME v\n"); -} - -int main(void) -{ int handle; - unsigned char command=' ', ini=0, first=1, last=1; - unsigned int cmd, i,j,k, arg1,arg2,arg3; - struct cdrom_ti ti; - struct cdrom_tochdr tocHdr; - struct cdrom_subchnl subchnl; - struct cdrom_tocentry entry; - struct cdrom_msf msf; - union { struct cdrom_msf msf; - unsigned char buf[CD_FRAMESIZE_RAW]; - } azt; - struct cdrom_volctrl volctrl; - - printf("\nMini-Audio CD-Player V0.72 (C) 1994,1995,1996 W.Zimmermann\n"); - handle=open("/dev/cdrom",O_RDWR); - ioctl(handle,CDROMRESUME); - - if (handle<=0) - { printf("Drive Error: already playing, no audio disk, door open\n"); - printf(" or no permission (you must be ROOT in order to use this program)\n"); - } - else - { help(); - while (1) - { printf("Type command (h = help): "); - scanf("%s",&command); - switch (command) - { case 'e': cmd=CDROMEJECT; - ioctl(handle,cmd); - break; - case 'p': if (!ini) - { printf("Command not allowed - play track first\n"); - } - else - { cmd=CDROMPAUSE; - if (ioctl(handle,cmd)) printf("Drive Error\n"); - } - break; - case 'r': if (!ini) - { printf("Command not allowed - play track first\n"); - } - else - { cmd=CDROMRESUME; - if (ioctl(handle,cmd)) printf("Drive Error\n"); - } - break; - case 's': cmd=CDROMPAUSE; - if (ioctl(handle,cmd)) printf("Drive error or already stopped\n"); - cmd=CDROMSTOP; - if (ioctl(handle,cmd)) printf("Drive error\n"); - break; - case 't': cmd=CDROMREADTOCHDR; - if (ioctl(handle,cmd,&tocHdr)) printf("Drive Error\n"); - first=tocHdr.cdth_trk0; - last= tocHdr.cdth_trk1; - if ((first==0)||(first>last)) - { printf ("--could not read TOC\n"); - } - else - { printf("--first track: %d --last track: %d --enter track number: ",first,last); - cmd=CDROMPLAYTRKIND; - scanf("%i",&arg1); - ti.cdti_trk0=arg1; - if (ti.cdti_trk0<first) ti.cdti_trk0=first; - if (ti.cdti_trk0>last) ti.cdti_trk0=last; - ti.cdti_ind0=0; - ti.cdti_trk1=last; - ti.cdti_ind1=0; - if (ioctl(handle,cmd,&ti)) printf("Drive Error\n"); - ini=1; - } - break; - case 'n': if (!ini++) - { if (ioctl(handle,CDROMREADTOCHDR,&tocHdr)) printf("Drive Error\n"); - first=tocHdr.cdth_trk0; - last= tocHdr.cdth_trk1; - ti.cdti_trk0=first-1; - } - if ((first==0)||(first>last)) - { printf ("--could not read TOC\n"); - } - else - { cmd=CDROMPLAYTRKIND; - if (++ti.cdti_trk0 > last) ti.cdti_trk0=last; - ti.cdti_ind0=0; - ti.cdti_trk1=last; - ti.cdti_ind1=0; - if (ioctl(handle,cmd,&ti)) printf("Drive Error\n"); - ini=1; - } - break; - case 'l': if (!ini++) - { if (ioctl(handle,CDROMREADTOCHDR,&tocHdr)) printf("Drive Error\n"); - first=tocHdr.cdth_trk0; - last= tocHdr.cdth_trk1; - ti.cdti_trk0=first+1; - } - if ((first==0)||(first>last)) - { printf ("--could not read TOC\n"); - } - else - { cmd=CDROMPLAYTRKIND; - if (--ti.cdti_trk0 < first) ti.cdti_trk0=first; - ti.cdti_ind0=0; - ti.cdti_trk1=last; - ti.cdti_ind1=0; - if (ioctl(handle,cmd,&ti)) printf("Drive Error\n"); - ini=1; - } - break; - case 'c': subchnl.cdsc_format=CDROM_MSF; - if (ioctl(handle,CDROMSUBCHNL,&subchnl)) - printf("Drive Error\n"); - else - { printf("AudioStatus:%s Track:%d Mode:%d MSF=%d:%d:%d\n", \ - subchnl.cdsc_audiostatus==CDROM_AUDIO_PLAY ? "PLAYING":"NOT PLAYING",\ - subchnl.cdsc_trk,subchnl.cdsc_adr, \ - subchnl.cdsc_absaddr.msf.minute, subchnl.cdsc_absaddr.msf.second, \ - subchnl.cdsc_absaddr.msf.frame); - } - break; - case 'i': if (!ini) - { printf("Command not allowed - play track first\n"); - } - else - { cmd=CDROMREADTOCENTRY; - printf("Track No.: "); - scanf("%d",&arg1); - entry.cdte_track=arg1; - if (entry.cdte_track<first) entry.cdte_track=first; - if (entry.cdte_track>last) entry.cdte_track=last; - entry.cdte_format=CDROM_MSF; - if (ioctl(handle,cmd,&entry)) - { printf("Drive error or invalid track no.\n"); - } - else - { printf("Mode %d Track, starts at %d:%d:%d\n", \ - entry.cdte_adr,entry.cdte_addr.msf.minute, \ - entry.cdte_addr.msf.second,entry.cdte_addr.msf.frame); - } - } - break; - case 'a': cmd=CDROMPLAYMSF; - printf("Address (min:sec:frame) "); - scanf("%d:%d:%d",&arg1,&arg2,&arg3); - msf.cdmsf_min0 =arg1; - msf.cdmsf_sec0 =arg2; - msf.cdmsf_frame0=arg3; - if (msf.cdmsf_sec0 > 59) msf.cdmsf_sec0 =59; - if (msf.cdmsf_frame0> 74) msf.cdmsf_frame0=74; - msf.cdmsf_min1=60; - msf.cdmsf_sec1=00; - msf.cdmsf_frame1=00; - if (ioctl(handle,cmd,&msf)) - { printf("Drive error or invalid address\n"); - } - break; -#ifdef AZT_PRIVATE_IOCTLS /*not supported by every CDROM driver*/ - case 'd': cmd=CDROMREADCOOKED; - printf("Address (min:sec:frame) "); - scanf("%d:%d:%d",&arg1,&arg2,&arg3); - azt.msf.cdmsf_min0 =arg1; - azt.msf.cdmsf_sec0 =arg2; - azt.msf.cdmsf_frame0=arg3; - if (azt.msf.cdmsf_sec0 > 59) azt.msf.cdmsf_sec0 =59; - if (azt.msf.cdmsf_frame0> 74) azt.msf.cdmsf_frame0=74; - if (ioctl(handle,cmd,&azt.msf)) - { printf("Drive error, invalid address or unsupported command\n"); - } - k=0; - getchar(); - for (i=0;i<128;i++) - { printf("%4d:",i*16); - for (j=0;j<16;j++) - { printf("%2x ",azt.buf[i*16+j]); - } - for (j=0;j<16;j++) - { if (isalnum(azt.buf[i*16+j])) - printf("%c",azt.buf[i*16+j]); - else - printf("."); - } - printf("\n"); - k++; - if (k>=20) - { printf("press ENTER to continue\n"); - getchar(); - k=0; - } - } - break; - case 'w': cmd=CDROMREADRAW; - printf("Address (min:sec:frame) "); - scanf("%d:%d:%d",&arg1,&arg2,&arg3); - azt.msf.cdmsf_min0 =arg1; - azt.msf.cdmsf_sec0 =arg2; - azt.msf.cdmsf_frame0=arg3; - if (azt.msf.cdmsf_sec0 > 59) azt.msf.cdmsf_sec0 =59; - if (azt.msf.cdmsf_frame0> 74) azt.msf.cdmsf_frame0=74; - if (ioctl(handle,cmd,&azt)) - { printf("Drive error, invalid address or unsupported command\n"); - } - k=0; - for (i=0;i<147;i++) - { printf("%4d:",i*16); - for (j=0;j<16;j++) - { printf("%2x ",azt.buf[i*16+j]); - } - for (j=0;j<16;j++) - { if (isalnum(azt.buf[i*16+j])) - printf("%c",azt.buf[i*16+j]); - else - printf("."); - } - printf("\n"); - k++; - if (k>=20) - { getchar(); - k=0; - } - } - break; -#endif - case 'v': cmd=CDROMVOLCTRL; - printf("--Channel 0 Left (0-255): "); - scanf("%d",&arg1); - printf("--Channel 1 Right (0-255): "); - scanf("%d",&arg2); - volctrl.channel0=arg1; - volctrl.channel1=arg2; - volctrl.channel2=0; - volctrl.channel3=0; - if (ioctl(handle,cmd,&volctrl)) - { printf("Drive error or unsupported command\n"); - } - break; - case 'q': if (close(handle)) printf("Drive Error: CLOSE\n"); - exit(0); - case 'h': help(); - break; - default: printf("unknown command\n"); - break; - } - } - } - return 0; -} diff --git a/Documentation/cdrom/cdu31a b/Documentation/cdrom/cdu31a deleted file mode 100644 index c0667da09c0..00000000000 --- a/Documentation/cdrom/cdu31a +++ /dev/null @@ -1,196 +0,0 @@ - - CDU31A/CDU33A Driver Info - ------------------------- - -Information on the Sony CDU31A/CDU33A CDROM driver for the Linux -kernel. - - Corey Minyard (minyard@metronet.com) - - Colossians 3:17 - -Crude Table of Contents ------------------------ - - Setting Up the Hardware - Configuring the Kernel - Configuring as a Module - Driver Special Features - - -This device driver handles Sony CDU31A/CDU33A CDROM drives and -provides a complete block-level interface as well as an ioctl() -interface as specified in include/linux/cdrom.h). With this -interface, CDROMs can be accessed, standard audio CDs can be played -back normally, and CD audio information can be read off the drive. - -Note that this will only work for CDU31A/CDU33A drives. Some vendors -market their drives as CDU31A compatible. They lie. Their drives are -really CDU31A hardware interface compatible (they can plug into the -same card). They are not software compatible. - -Setting Up the Hardware ------------------------ - -The CDU31A driver is unable to safely tell if an interface card is -present that it can use because the interface card does not announce -its presence in any way besides placing 4 I/O locations in memory. It -used to just probe memory and attempt commands, but Linus wisely asked -me to remove that because it could really screw up other hardware in -the system. - -Because of this, you must tell the kernel where the drive interface -is, what interrupts are used, and possibly if you are on a PAS-16 -soundcard. - -If you have the Sony CDU31A/CDU33A drive interface card, the following -diagram will help you set it up. If you have another card, you are on -your own. You need to make sure that the I/O address and interrupt is -not used by another card in the system. You will need to know the I/O -address and interrupt you have set. Note that use of interrupts is -highly recommended, if possible, it really cuts down on CPU used. -Unfortunately, most soundcards do not support interrupts for their -CDROM interfaces. By default, the Sony interface card comes with -interrupts disabled. - - +----------+-----------------+----------------------+ - | JP1 | 34 Pin Conn | | - | JP2 +-----------------+ | - | JP3 | - | JP4 | - | +--+ - | | +-+ - | | | | External - | | | | Connector - | | | | - | | +-+ - | +--+ - | | - | +--------+ - | | - +------------------------------------------+ - - JP1 sets the Base Address, using the following settings: - - Address Pin 1 Pin 2 - ------- ----- ----- - 0x320 Short Short - 0x330 Short Open - 0x340 Open Short - 0x360 Open Open - - JP2 and JP3 configure the DMA channel; they must be set the same. - - DMA Pin 1 Pin 2 Pin 3 - --- ----- ----- ----- - 1 On Off On - 2 Off On Off - 3 Off Off On - - JP4 Configures the IRQ: - - IRQ Pin 1 Pin 2 Pin 3 Pin 4 - --- ----- ----- ----- ----- - 3 Off Off On Off - 4 Off Off* Off On - 5 On Off Off Off - 6 Off On Off Off - - The documentation states to set this for interrupt - 4, but I think that is a mistake. - -Note that if you have another interface card, you will need to look at -the documentation to find the I/O base address. This is specified to -the SLCD.SYS driver for DOS with the /B: parameter, so you can look at -you DOS driver setup to find the address, if necessary. - -Configuring the Kernel ----------------------- - -You must tell the kernel where the drive is at boot time. This can be -done at the Linux boot prompt, by using LILO, or by using Bootlin. -Note that this is no substitute for HOWTOs and LILO documentation, if -you are confused please read those for info on bootline configuration -and LILO. - -At the linux boot prompt, press the ALT key and add the following line -after the boot name (you can let the kernel boot, it will tell you the -default boot name while booting): - - cdu31a=<base address>,<interrupt>[,PAS] - -The base address needs to have "0x" in front of it, since it is in -hex. For instance, to configure a drive at address 320 on interrupt 5, -use the following: - - cdu31a=0x320,5 - -I use the following boot line: - - cdu31a=0x1f88,0,PAS - -because I have a PAS-16 which does not support interrupt for the -CDU31A interface. - -Adding this as an append line at the beginning of the /etc/lilo.conf -file will set it for lilo configurations. I have the following as the -first line in my lilo.conf file: - - append="cdu31a=0x1f88,0" - -I'm not sure how to set up Bootlin (I have never used it), if someone -would like to fill in this section please do. - - -Configuring as a Module ------------------------ - -The driver supports loading as a module. However, you must specify -the boot address and interrupt on the boot line to insmod. You can't -use modprobe to load it, since modprobe doesn't support setting -variables. - -Anyway, I use the following line to load my driver as a module - - /sbin/insmod /lib/modules/`uname -r`/misc/cdu31a.o cdu31a_port=0x1f88 - -You can set the following variables in the driver: - - cdu31a_port=<I/O address> - sets the base I/O. If hex, put 0x in - front of it. This must be specified. - - cdu31a_irq=<interrupt> - Sets the interrupt number. Leaving this - off will turn interrupts off. - - -Driver Special Features ------------------------ - -This section describes features beyond the normal audio and CD-ROM -functions of the drive. - -2048 byte buffer mode - -If a disk is mounted with -o block=2048, data is copied straight from -the drive data port to the buffer. Otherwise, the readahead buffer -must be involved to hold the other 1K of data when a 1K block -operation is done. Note that with 2048 byte blocks you cannot execute -files from the CD. - -XA compatibility - -The driver should support XA disks for both the CDU31A and CDU33A. It -does this transparently, the using program doesn't need to set it. - -Multi-Session - -A multi-session disk looks just like a normal disk to the user. Just -mount one normally, and all the data should be there. A special -thanks to Koen for help with this! - -Raw sector I/O - -Using the CDROMREADAUDIO it is possible to read raw audio and data -tracks. Both operations return 2352 bytes per sector. On the data -tracks, the first 12 bytes is not returned by the drive and the value -of that data is indeterminate. diff --git a/Documentation/cdrom/cm206 b/Documentation/cdrom/cm206 deleted file mode 100644 index 810368f4f7c..00000000000 --- a/Documentation/cdrom/cm206 +++ /dev/null @@ -1,185 +0,0 @@ -This is the readme file for the driver for the Philips/LMS cdrom drive -cm206 in combination with the cm260 host adapter card. - - (c) 1995 David A. van Leeuwen - -Changes since version 0.99 --------------------------- -- Interfacing to the kernel is routed though an extra interface layer, - cdrom.c. This allows runtime-configurable `behavior' of the cdrom-drive, - independent of the driver. - -Features since version 0.33 ---------------------------- -- Full audio support, that is, both workman, workbone and cdp work - now reasonably. Reading TOC still takes some time. xmcd has been - reported to run successfully. -- Made auto-probe code a little better, I hope - -Features since version 0.28 ---------------------------- -- Full speed transfer rate (300 kB/s). -- Minimum kernel memory usage for buffering (less than 3 kB). -- Multisession support. -- Tray locking. -- Statistics of driver accessible to the user. -- Module support. -- Auto-probing of adapter card's base port and irq line, - also configurable at boot time or module load time. - - -Decide how you are going to use the driver. There are two -options: - - (a) installing the driver as a resident part of the kernel - (b) compiling the driver as a loadable module - - Further, you must decide if you are going to specify the base port - address and the interrupt request line of the adapter card cm260 as - boot options for (a), module parameters for (b), use automatic - probing of these values, or hard-wire your adaptor card's settings - into the source code. If you don't care, you can choose - autoprobing, which is the default. In that case you can move on to - the next step. - -Compiling the kernel --------------------- -1) move to /usr/src/linux and do a - - make config - - If you have chosen option (a), answer yes to CONFIG_CM206 and - CONFIG_ISO9660_FS. - - If you have chosen option (b), answer yes to CONFIG_MODVERSIONS - and no (!) to CONFIG_CM206 and CONFIG_ISO9660_FS. - -2) then do a - - make clean; make zImage; make modules - -3) do the usual things to install a new image (backup the old one, run - `rdev -R zImage 1', copy the new image in place, run lilo). Might - be `make zlilo'. - -Using the driver as a module ----------------------------- -If you will only occasionally use the cd-rom driver, you can choose -option (b), install as a loadable module. You may have to re-compile -the module when you upgrade the kernel to a new version. - -Since version 0.96, much of the functionality has been transferred to -a generic cdrom interface in the file cdrom.c. The module cm206.o -depends on cdrom.o. If the latter is not compiled into the kernel, -you must explicitly load it before cm206.o: - - insmod /usr/src/linux/modules/cdrom.o - -To install the module, you use the command, as root - - insmod /usr/src/linux/modules/cm206.o - -You can specify the base address on the command line as well as the irq -line to be used, e.g. - - insmod /usr/src/linux/modules/cm206.o cm206=0x300,11 - -The order of base port and irq line doesn't matter; if you specify only -one, the other will have the value of the compiled-in default. You -may also have to install the file-system module `iso9660.o', if you -didn't compile that into the kernel. - - -Using the driver as part of the kernel --------------------------------------- -If you have chosen option (a), you can specify the base-port -address and irq on the lilo boot command line, e.g.: - - LILO: linux cm206=0x340,11 - -This assumes that your linux kernel image keyword is `linux'. -If you specify either IRQ (3--11) or base port (0x300--0x370), -auto probing is turned off for both settings, thus setting the -other value to the compiled-in default. - -Note that you can also put these parameters in the lilo configuration file: - -# linux config -image = /vmlinuz - root = /dev/hda1 - label = Linux - append = "cm206=0x340,11" - read-only - - -If module parameters and LILO config options don't work -------------------------------------------------------- -If autoprobing does not work, you can hard-wire the default values -of the base port address (CM206_BASE) and interrupt request line -(CM206_IRQ) into the file /usr/src/linux/drivers/cdrom/cm206.h. Change -the defines of CM206_IRQ and CM206_BASE. - - -Mounting the cdrom ------------------- -1) Make sure that the right device is installed in /dev. - - mknod /dev/cm206cd b 32 0 - -2) Make sure there is a mount point, e.g., /cdrom - - mkdir /cdrom - -3) mount using a command like this (run as root): - - mount -rt iso9660 /dev/cm206cd /cdrom - -4) For user-mounts, add a line in /etc/fstab - - /dev/cm206cd /cdrom iso9660 ro,noauto,user - - This will allow users to give the commands - - mount /cdrom - umount /cdrom - -If things don't work --------------------- - -- Try to do a `dmesg' to find out if the driver said anything about - what is going wrong during the initialization. - -- Try to do a `dd if=/dev/cm206cd | od -tc | less' to read from the - CD. - -- Look in the /proc directory to see if `cm206' shows up under one of - `interrupts', `ioports', `devices' or `modules' (if applicable). - - -DISCLAIMER ----------- -I cannot guarantee that this driver works, or that the hardware will -not be harmed, although I consider it most unlikely. - -I hope that you'll find this driver in some way useful. - - David van Leeuwen - david@tm.tno.nl - -Note for Linux CDROM vendors ------------------------------ -You are encouraged to include this driver on your Linux CDROM. If -you do, you might consider sending me a free copy of that cd-rom. -You can contact me through my e-mail address, david@tm.tno.nl. -If this driver is compiled into a kernel to boot off a cdrom, -you should actually send me a free copy of that cd-rom. - -Copyright ---------- -The copyright of the cm206 driver for Linux is - - (c) 1995 David A. van Leeuwen - -The driver is released under the conditions of the GNU general public -license, which can be found in the file COPYING in the root of this -source tree. diff --git a/Documentation/cdrom/gscd b/Documentation/cdrom/gscd deleted file mode 100644 index d01ca36b5c4..00000000000 --- a/Documentation/cdrom/gscd +++ /dev/null @@ -1,60 +0,0 @@ - Goldstar R420 CD-Rom device driver README - -For all kind of other information about the GoldStar R420 CDROM -and this Linux device driver see the WWW page: - - http://linux.rz.fh-hannover.de/~raupach - - - If you are the editor of a Linux CD, you should - enable gscd.c within your boot floppy kernel. Please, - send me one of your CDs for free. - - -This current driver version 0.4a only supports reading data from the disk. -Currently we have no audio and no multisession or XA support. -The polling interface is used, no DMA. - - -Sometimes the GoldStar R420 is sold in a 'Reveal Multimedia Kit'. This kit's -drive interface is compatible, too. - - -Installation ------------- - -Change to '/usr/src/linux/drivers/cdrom' and edit the file 'gscd.h'. Insert -the i/o address of your interface card. - -The default base address is 0x340. This will work for most applications. -Address selection is accomplished by jumpers PN801-1 to PN801-4 on the -GoldStar Interface Card. -Appropriate settings are: 0x300, 0x310, 0x320, 0x330, 0x340, 0x350, 0x360 -0x370, 0x380, 0x390, 0x3A0, 0x3B0, 0x3C0, 0x3D0, 0x3E0, 0x3F0 - -Then go back to '/usr/src/linux/' and 'make config' to build the new -configuration for your kernel. If you want to use the GoldStar driver -like a module, don't select 'GoldStar CDROM support'. By the way, you -have to include the iso9660 filesystem. - -Now start compiling the kernel with 'make zImage'. -If you want to use the driver as a module, you have to do 'make modules' -and 'make modules_install', additionally. -Install your new kernel as usual - maybe you do it with 'make zlilo'. - -Before you can use the driver, you have to - mknod /dev/gscd0 b 16 0 -to create the appropriate device file (you only need to do this once). - -If you use modules, you can try to insert the driver. -Say: 'insmod /usr/src/linux/modules/gscd.o' -or: 'insmod /usr/src/linux/modules/gscd.o gscd=<address>' -The driver should report its results. - -That's it! Mount a disk, i.e. 'mount -rt iso9660 /dev/gscd0 /cdrom' - -Feel free to report errors and suggestions to the following address. -Be sure, I'm very happy to receive your comments! - - Oliver Raupach Hannover, Juni 1995 -(raupach@nwfs1.rz.fh-hannover.de) diff --git a/Documentation/cdrom/isp16 b/Documentation/cdrom/isp16 deleted file mode 100644 index cc86533ac9f..00000000000 --- a/Documentation/cdrom/isp16 +++ /dev/null @@ -1,100 +0,0 @@ - -- Documentation/cdrom/isp16 - -Docs by Eric van der Maarel <H.T.M.v.d.Maarel@marin.nl> - -This is the README for version 0.6 of the cdrom interface on an -ISP16, MAD16 or Mozart sound card. - -The detection and configuration of this interface used to be included -in both the sjcd and optcd cdrom driver. Drives supported by these -drivers came packed with Media Magic's multi media kit, which also -included the ISP16 card. The idea (thanks Leo Spiekman) -to move it from these drivers into a separate module and moreover, not to -rely on the MAD16 sound driver, are as follows: --duplication of code in the kernel is a waste of resources and should - be avoided; --however, kernels and notably those included with Linux distributions - (cf Slackware 3.0 included version 0.5 of the isp16 configuration - code included in the drivers) don't always come with sound support - included. Especially when they already include a bunch of cdrom drivers. - Hence, the cdrom interface should be configurable _independently_ of - sound support. - -The ISP16, MAD16 and Mozart sound cards have an OPTi 82C928 or an -OPTi 82C929 chip. The interface on these cards should work with -any cdrom attached to the card, which is 'electrically' compatible -with Sanyo/Panasonic, Sony or Mitsumi non-ide drives. However, the -command sets for any proprietary drives may differ -(and hence may not be supported in the kernel) from these four types. -For a fact I know the interface works and the way of configuration -as described in this documentation works in combination with the -sjcd (in Sanyo/Panasonic compatibility mode) cdrom drivers -(probably with the optcd (in Sony compatibility mode) as well). -If you have such an OPTi based sound card and you want to use the -cdrom interface with a cdrom drive supported by any of the other cdrom -drivers, it will probably work. Please let me know any experience you -might have). -I understand that cards based on the OPTi 82C929 chips may be configured -(hardware jumpers that is) as an IDE interface. Initialisation of such a -card in this mode is not supported (yet?). - -The suggestion to configure the ISP16 etc. sound card by booting DOS and -do a warm reboot to boot Linux somehow doesn't work, at least not -on my machine (IPC P90), with the OPTi 82C928 based card. - -Booting the kernel through the boot manager LILO allows the use -of some command line options on the 'LILO boot:' prompt. At boot time -press Alt or Shift while the LILO prompt is written on the screen and enter -any kernel options. Alternatively these options may be used in -the appropriate section in /etc/lilo.conf. Adding 'append="<cmd_line_options>"' -will do the trick as well. -The syntax of 'cmd_line_options' is - - isp16=[<port>[,<irq>[,<dma>]]][[,]<drive_type>] - -If there is no ISP16 or compatibles detected, there's probably no harm done. -These options indicate the values that your cdrom drive has been (or will be) -configured to use. -Valid values for the base i/o address are: - port=0x340,0x320,0x330,0x360 -for the interrupt request number - irq=0,3,5,7,9,10,11 -for the direct memory access line - dma=0,3,5,6,7 -and for the type of drive - drive_type=noisp16,Sanyo,Panasonic,Sony,Mitsumi. -Note that these options are case sensitive. -The values 0 for irq and dma indicate that they are not used, and -the drive will be used in 'polling' mode. The values 5 and 7 for irq -should be avoided in order to avoid any conflicts with optional -sound card configuration. -The syntax of the command line does not allow the specification of -irq when there's nothing specified for the base address and no -specification of dma when there is no specification of irq. -The value 'noisp16' for drive_type, which may be used as the first -non-integer option value (e.g. 'isp16=noisp16'), makes sure that probing -for and subsequent configuration of an ISP16-compatible card is skipped -all together. This can be useful to overcome possible conflicts which -may arise while the kernel is probing your hardware. -The default values are - port=0x340 - irq=0 - dma=0 - drive_type=Sanyo -reflecting my own configuration. The defaults can be changed in -the file linux/drivers/cdrom/ips16.h. - -The cdrom interface can be configured at run time by loading the -initialisation driver as a module. In that case, the interface -parameters can be set by giving appropriate values on the command -line. Configuring the driver can then be done by the following -command (assuming you have iso16.o installed in a proper place): - - insmod isp16.o isp16_cdrom_base=<port> isp16_cdrom_irq=<irq> \ - isp16_cdrom_dma=<dma> isp16_cdrom_type=<drive_type> - -where port, irq, dma and drive_type can have any of the values mentioned -above. - - -Have fun! diff --git a/Documentation/cdrom/mcdx b/Documentation/cdrom/mcdx deleted file mode 100644 index 2bac4b7ff6d..00000000000 --- a/Documentation/cdrom/mcdx +++ /dev/null @@ -1,29 +0,0 @@ -If you are using the driver as a module, you can specify your ports and IRQs -like - - # insmod mcdx.o mcdx=0x300,11,0x304,5 - -and so on ("address,IRQ" pairs). -This will override the configuration in mcdx.h. - -This driver: - - o handles XA and (hopefully) multi session CDs as well as - ordinary CDs; - o supports up to 5 drives (of course, you'll need free - IRQs, i/o ports and slots); - o plays audio - -This version doesn't support yet: - - o shared IRQs (but it seems to be possible - I've successfully - connected two drives to the same irq. So it's `only' a - problem of the driver.) - -This driver never will: - - o Read digital audio (i.e. copy directly), due to missing - hardware features. - - -heiko@lotte.sax.de diff --git a/Documentation/cdrom/optcd b/Documentation/cdrom/optcd deleted file mode 100644 index 6f46c7adb24..00000000000 --- a/Documentation/cdrom/optcd +++ /dev/null @@ -1,57 +0,0 @@ -This is the README file for the Optics Storage 8000 AT CDROM device driver. - -This is the driver for the so-called 'DOLPHIN' drive, with the 34-pin -Sony-compatible interface. For the IDE-compatible Optics Storage 8001 -drive, you will want the ATAPI CDROM driver. The driver also seems to -work with the Lasermate CR328A. If you have a drive that works with -this driver, and that doesn't report itself as DOLPHIN, please drop me -a mail. - -The support for multisession CDs is in ALPHA stage. If you use it, -please mail me your experiences. Multisession support can be disabled -at compile time. - -You can find some older versions of the driver at - dutette.et.tudelft.nl:/pub/linux/ -and at Eberhard's mirror - ftp.gwdg.de:/pub/linux/cdrom/drivers/optics/ - -Before you can use the driver, you have to create the device file once: - # mknod /dev/optcd0 b 17 0 - -To specify the base address if the driver is "compiled-in" to your kernel, -you can use the kernel command line item (LILO option) - optcd=0x340 -with the right address. - -If you have compiled optcd as a module, you can load it with - # insmod /usr/src/linux/modules/optcd.o -or - # insmod /usr/src/linux/modules/optcd.o optcd=0x340 -with the matching address value of your interface card. - -The driver employs a number of buffers to do read-ahead and block size -conversion. The number of buffers is configurable in optcd.h, and has -influence on the driver performance. For my machine (a P75), 6 buffers -seems optimal, as can be seen from this table: - -#bufs kb/s %cpu -1 97 0.1 -2 191 0.3 -3 188 0.2 -4 246 0.3 -5 189 19 -6 280 0.4 -7 281 7.0 -8 246 2.8 -16 281 3.4 - -If you get a throughput significantly below 300 kb/s, try tweaking -N_BUFS, and don't forget to mail me your results! - -I'd appreciate success/failure reports. If you find a bug, try -recompiling the driver with some strategically chosen debug options -(these can be found in optcd.h) and include the messages generated in -your bug report. Good luck. - -Leo Spiekman (spiekman@dutette.et.tudelft.nl) diff --git a/Documentation/cdrom/sbpcd b/Documentation/cdrom/sbpcd deleted file mode 100644 index b3ba63f4ce3..00000000000 --- a/Documentation/cdrom/sbpcd +++ /dev/null @@ -1,1061 +0,0 @@ -This README belongs to release 4.2 or newer of the SoundBlaster Pro -(Matsushita, Kotobuki, Panasonic, CreativeLabs, Longshine and Teac) -CD-ROM driver for Linux. - -sbpcd really, really is NOT for ANY IDE/ATAPI drive! -Not even if you have an "original" SoundBlaster card with an IDE interface! -So, you'd better have a look into README.ide if your port address is 0x1F0, -0x170, 0x1E8, 0x168 or similar. -I get tons of mails from IDE/ATAPI drive users - I really can't continue -any more to answer them all. So, if your drive/interface information sheets -mention "IDE" (primary, secondary, tertiary, quaternary) and the DOS driver -invoking line within your CONFIG.SYS is using an address below 0x230: -DON'T ROB MY LAST NERVE - jumper your interface to address 0x170 and IRQ 15 -(that is the "secondary IDE" configuration), set your drive to "master" and -use ide-cd as your driver. If you do not have a second IDE hard disk, use the -LILO commands - hdb=noprobe hdc=cdrom -and get lucky. -To make it fully clear to you: if you mail me about IDE/ATAPI drive problems, -my answer is above, and I simply will discard your mail, hoping to stop the -flood and to find time to lead my 12-year old son towards happy computing. - -The driver is able to drive the whole family of "traditional" AT-style (that -is NOT the new "Enhanced IDE" or "ATAPI" drive standard) Matsushita, -Kotobuki, Panasonic drives, sometimes labelled as "CreativeLabs". The -well-known drives are CR-521, CR-522, CR-523, CR-562, CR-563. -CR-574 is an IDE/ATAPI drive. - -The Longshine LCS-7260 is a double-speed drive which uses the "old" -Matsushita command set. It is supported - with help by Serge Robyns. -Vertos ("Elitegroup Computer Systems", ECS) has a similar drive - support -has started; get in contact if you have such a "Vertos 100" or "ECS-AT" -drive. - -There exists an "IBM External ISA CD-ROM Drive" which in fact is a CR-563 -with a special controller board. This drive is supported (the interface is -of the "LaserMate" type), and it is possibly the best buy today (cheaper than -an internal drive, and you can use it as an internal, too - e.g. plug it into -a soundcard). - -CreativeLabs has a new drive "CD200" and a similar drive "CD200F". The latter -is made by Funai and sometimes named "E2550UA", newer models may be named -"MK4015". The CD200F drives should fully work. -CD200 drives without "F" are still giving problems: drive detection and -playing audio should work, data access will result in errors. I need qualified -feedback about the bugs within the data functions or a drive (I never saw a -CD200). - -The quad-speed Teac CD-55A drive is supported, but still does not reach "full -speed". The data rate already reaches 500 kB/sec if you set SBP_BUFFER_FRAMES -to 64 (it is not recommended to do that for normal "file access" usage, but it -can speed up things a lot if you use something like "dd" to read from the -drive; I use it for verifying self-written CDs this way). -The drive itself is able to deliver 600 kB/sec, so this needs -work; with the normal setup, the performance currently is not even as good as -double-speed. - -This driver is NOT for Mitsumi or Sony or Aztech or Philips or XXX drives, -and again: this driver is in no way usable for any IDE/ATAPI drive. If you -think your drive should work and it doesn't: send me the DOS driver for your -beast (gzipped + uuencoded) and your CONFIG.SYS if you want to ask me for help, -and include an original log message excerpt, and try to give all information -a complete idiot needs to understand your hassle already with your first -mail. And if you want to say "as I have mailed you before", be sure that I -don't remember your "case" by such remarks; at the moment, I have some -hundreds of open correspondences about Linux CDROM questions (hope to reduce if -the IDE/ATAPI user questions disappear). - - -This driver will work with the soundcard interfaces (SB Pro, SB 16, Galaxy, -SoundFX, Mozart, MAD16 ...) and with the "no-sound" cards (Panasonic CI-101P, -LaserMate, WDH-7001C, Longshine LCS-6853, Teac ...). - -It works with the "configurable" interface "Sequoia S-1000", too, which is -used on the Spea Media FX and Ensonic Soundscape sound cards. You have to -specify the type "SBPRO 2" and the true CDROM port address with it, not the -"configuration port" address. - -If you have a sound card which needs a "configuration driver" instead of -jumpers for interface types and addresses (like Mozart cards) - those -drivers get invoked before the DOS CDROM driver in your CONFIG.SYS, typical -names are "cdsetup.sys" and "mztinit.sys" - let the sound driver do the -CDROM port configuration (the leading comments in linux/drivers/sound/mad16.c -are just for you!). Hannu Savolainen's mad16.c code is able to set up my -Mozart card - I simply had to add - #define MAD16_CONF 0x06 - #define MAD16_CDSEL 0x03 -to configure the CDROM interface for type "Panasonic" (LaserMate) and address -0x340. - -The interface type has to get configured in linux/drivers/cdrom/sbpcd.h, -because the register layout is different between the "SoundBlaster" and the -"LaserMate" type. - -I got a report that the Teac interface card "I/F E117098" is of type -"SoundBlaster" (i.e. you have to set SBPRO to 1) even with the addresses -0x300 and above. This is unusual, and it can't get covered by the auto -probing scheme. -The Teac 16-bit interface cards (like P/N E950228-00A, default address 0x2C0) -need the SBPRO 3 setup. - -If auto-probing found the drive, the address is correct. The reported type -may be wrong. A "mount" will give success only if the interface type is set -right. Playing audio should work with a wrong set interface type, too. - -With some Teac and some CD200 drives I have seen interface cards which seem -to lack the "drive select" lines; always drive 0 gets addressed. To avoid -"mirror drives" (four drives detected where you only have one) with such -interface cards, set MAX_DRIVES to 1 and jumper your drive to ID 0 (if -possible). - - -Up to 4 drives per interface card, and up to 4 interface cards are supported. -All supported drive families can be mixed, but the CR-521 drives are -hard-wired to drive ID 0. The drives have to use different drive IDs, and each -drive has to get a unique minor number (0...3), corresponding indirectly to -its drive ID. -The drive IDs may be selected freely from 0 to 3 - they do not have to be in -consecutive order. - -As Don Carroll, don@ds9.us.dell.com or FIDO 1:382/14, told me, it is possible -to change old drives to any ID, too. He writes in this sense: - "In order to be able to use more than one single speed drive - (they do not have the ID jumpers) you must add a DIP switch - and two resistors. The pads are already on the board next to - the power connector. You will see the silkscreen for the - switch if you remove the top cover. - 1 2 3 4 - ID 0 = x F F x O = "on" - ID 1 = x O F x F = "off" - ID 2 = x F O x x = "don't care" - ID 3 = x O O x - Next to the switch are the positions for R76 (7k) and R78 - (12k). I had to play around with the resistor values - ID 3 - did not work with other values. If the values are not good, - ID 3 behaves like ID 0." - -To use more than 4 drives, you simply need a second controller card at a -different address and a second cable. - -The driver supports reading of data from the CD and playing of audio tracks. -The audio part should run with WorkMan, xcdplayer, with the "non-X11" products -CDplayer and WorkBone - tell me if it is not compatible with other software. -The only accepted measure for correctness with the audio functions is the -"cdtester" utility (appended) - most audio player programmers seem to be -better musicians than programmers. ;-) - -With the CR-56x and the CD200 drives, the reading of audio frames is possible. -This is implemented by an IOCTL function which reads READ_AUDIO frames of -2352 bytes at once (configurable with the "READ_AUDIO" define, default is 0). -Reading the same frame a second time gives different data; the frame data -start at a different position, but all read bytes are valid, and we always -read 98 consecutive chunks (of 24 Bytes) as a frame. Reading more than 1 frame -at once possibly misses some chunks at each frame boundary. This lack has to -get corrected by external, "higher level" software which reads the same frame -again and tries to find and eliminate overlapping chunks (24-byte-pieces). - -The transfer rate with reading audio (1-frame-pieces) currently is very slow. -This can be better reading bigger chunks, but the "missing" chunks possibly -occur at the beginning of each single frame. -The software interface possibly may change a bit the day the SCSI driver -supports it too. - -With all but the CR-52x drives, MultiSession is supported. -Photo CDs work (the "old" drives like CR-521 can access only the first -session of a photoCD). -At ftp.gwdg.de:/pub/linux/hpcdtoppm/ you will find Hadmut Danisch's package to -convert photo CD image files and Gerd Knorr's viewing utility. - -The transfer rate will reach 150 kB/sec with CR-52x drives, 300 kB/sec with -CR-56x drives, and currently not more than 500 kB/sec (usually less than -250 kB/sec) with the Teac quad speed drives. -XA (PhotoCD) disks with "old" drives give only 50 kB/sec. - -This release consists of -- this README file -- the driver file linux/drivers/cdrom/sbpcd.c -- the stub files linux/drivers/cdrom/sbpcd[234].c -- the header file linux/drivers/cdrom/sbpcd.h. - - -To install: ------------ - -1. Setup your hardware parameters. Though the driver does "auto-probing" at a - lot of (not all possible!) addresses, this step is recommended for - everyday use. You should let sbpcd auto-probe once and use the reported - address if a drive got found. The reported type may be incorrect; it is - correct if you can mount a data CD. There is no choice for you with the - type; only one is right, the others are deadly wrong. - - a. Go into /usr/src/linux/drivers/cdrom/sbpcd.h and configure it for your - hardware (near the beginning): - a1. Set it up for the appropriate type of interface board. - "Original" CreativeLabs sound cards need "SBPRO 1". - Most "compatible" sound cards (almost all "non-CreativeLabs" cards) - need "SBPRO 0". - The "no-sound" board from OmniCd needs the "SBPRO 1" setup. - The Teac 8-bit "no-sound" boards need the "SBPRO 1" setup. - The Teac 16-bit "no-sound" boards need the "SBPRO 3" setup. - All other "no-sound" boards need the "SBPRO 0" setup. - The Spea Media FX and Ensoniq SoundScape cards need "SBPRO 2". - sbpcd.c holds some examples in its auto-probe list. - If you configure "SBPRO" wrong, the playing of audio CDs will work, - but you will not be able to mount a data CD. - a2. Tell the address of your CDROM_PORT (not of the sound port). - a3. If 4 drives get found, but you have only one, set MAX_DRIVES to 1. - a4. Set DISTRIBUTION to 0. - b. Additionally for 2.a1 and 2.a2, the setup may be done during - boot time (via the "kernel command line" or "LILO option"): - sbpcd=0x320,LaserMate - or - sbpcd=0x230,SoundBlaster - or - sbpcd=0x338,SoundScape - or - sbpcd=0x2C0,Teac16bit - This is especially useful if you install a fresh distribution. - If the second parameter is a number, it gets taken as the type - setting; 0 is "LaserMate", 1 is "SoundBlaster", 2 is "SoundScape", - 3 is "Teac16bit". - So, for example - sbpcd=0x230,1 - is equivalent to - sbpcd=0x230,SoundBlaster - -2. "cd /usr/src/linux" and do a "make config" and select "y" for Matsushita - CD-ROM support and for ISO9660 FileSystem support. If you do not have a - second, third, or fourth controller installed, do not say "y" to the - secondary Matsushita CD-ROM questions. - -3. Then make the kernel image ("make zlilo" or similar). - -4. Make the device file(s). This step usually already has been done by the - MAKEDEV script. - The driver uses MAJOR 25, so, if necessary, do - mknod /dev/sbpcd b 25 0 (if you have only one drive) - and/or - mknod /dev/sbpcd0 b 25 0 - mknod /dev/sbpcd1 b 25 1 - mknod /dev/sbpcd2 b 25 2 - mknod /dev/sbpcd3 b 25 3 - to make the node(s). - - The "first found" drive gets MINOR 0 (regardless of its jumpered ID), the - "next found" (at the same cable) gets MINOR 1, ... - - For a second interface board, you have to make nodes like - mknod /dev/sbpcd4 b 26 0 - mknod /dev/sbpcd5 b 26 1 - and so on. Use the MAJORs 26, 27, 28. - - If you further make a link like - ln -s sbpcd /dev/cdrom - you can use the name /dev/cdrom, too. - -5. Reboot with the new kernel. - -You should now be able to do - mkdir /CD -and - mount -rt iso9660 /dev/sbpcd /CD -or - mount -rt iso9660 -o block=2048 /dev/sbpcd /CD -and see the contents of your CD in the /CD directory. -To use audio CDs, a mounting is not recommended (and it would fail if the -first track is not a data track). - - -Using sbpcd as a "loadable module": ------------------------------------ - -If you do NOT select "Matsushita/Panasonic CDROM driver support" during the -"make config" of your kernel, you can build the "loadable module" sbpcd.o. - -If sbpcd gets used as a module, the support of more than one interface -card (i.e. drives 4...15) is disabled. - -You can specify interface address and type with the "insmod" command like: - # insmod /usr/src/linux/modules/sbpcd.o sbpcd=0x340,0 -or - # insmod /usr/src/linux/modules/sbpcd.o sbpcd=0x230,1 -or - # insmod /usr/src/linux/modules/sbpcd.o sbpcd=0x338,2 -where the last number represents the SBPRO setting (no strings allowed here). - - -Things of interest: -------------------- - -The driver is configured to try the LaserMate type of interface at I/O port -0x0340 first. If this is not appropriate, sbpcd.h should get changed -(you will find the right place - just at the beginning). - -No DMA and no IRQ is used. - -To reduce or increase the amount of kernel messages, edit sbpcd.c and play -with the "DBG_xxx" switches (initialization of the variable "sbpcd_debug"). -Don't forget to reflect on what you do; enabling all DBG_xxx switches at once -may crash your system, and each message line is accompanied by a delay. - -The driver uses the "variable BLOCK_SIZE" feature. To use it, you have to -specify "block=2048" as a mount option. Doing this will disable the direct -execution of a binary from the CD; you have to copy it to a device with the -standard BLOCK_SIZE (1024) first. So, do not use this if your system is -directly "running from the CDROM" (like some of Yggdrasil's installation -variants). There are CDs on the market (like the German "unifix" Linux -distribution) which MUST get handled with a block_size of 1024. Generally, -one can say all the CDs which hold files of the name YMTRANS.TBL are defective; -do not use block=2048 with those. - -Within sbpcd.h, you will find some "#define"s (e.g. EJECT and JUKEBOX). With -these, you can configure the driver for some special things. -You can use the appended program "cdtester" to set the auto-eject feature -during runtime. Jeff Tranter's "eject" utility can do this, too (and more) -for you. - -There is an ioctl CDROMMULTISESSION to obtain with a user program if -the CD is an XA disk and - if it is - where the last session starts. The -"cdtester" program illustrates how to call it. - - -Auto-probing at boot time: --------------------------- - -The driver does auto-probing at many well-known interface card addresses, -but not all: -Some probings can cause a hang if an NE2000 ethernet card gets touched, because -SBPCD's auto-probing happens before the initialization of the net drivers. -Those "hazardous" addresses are excluded from auto-probing; the "kernel -command line" feature has to be used during installation if you have your -drive at those addresses. The "module" version is allowed to probe at those -addresses, too. - -The auto-probing looks first at the configured address resp. the address -submitted by the kernel command line. With this, it is possible to use this -driver within installation boot floppies, and for any non-standard address, -too. - -Auto-probing will make an assumption about the interface type ("SBPRO" or not), -based upon the address. That assumption may be wrong (initialization will be -o.k., but you will get I/O errors during mount). In that case, use the "kernel -command line" feature and specify address & type at boot time to find out the -right setup. - -For everyday use, address and type should get configured within sbpcd.h. That -will stop the auto-probing due to success with the first try. - -The kernel command "sbpcd=0" suppresses each auto-probing and causes -the driver not to find any drive; it is meant for people who love sbpcd -so much that they do not want to miss it, even if they miss the drives. ;-) - -If you configure "#define CDROM_PORT 0" in sbpcd.h, the auto-probing is -initially disabled and needs an explicit kernel command to get activated. -Once activated, it does not stop before success or end-of-list. This may be -useful within "universal" CDROM installation boot floppies (but using the -loadable module would be better because it allows an "extended" auto-probing -without fearing NE2000 cards). - -To shorten the auto-probing list to a single entry, set DISTRIBUTION 0 within -sbpcd.h. - - -Setting up address and interface type: --------------------------------------- - -If your I/O port address is not 0x340, you have to look for the #defines near -the beginning of sbpcd.h and configure them: set SBPRO to 0 or 1 or 2, and -change CDROM_PORT to the address of your CDROM I/O port. - -Almost all of the "SoundBlaster compatible" cards behave like the no-sound -interfaces, i.e. need SBPRO 0! - -With "original" SB Pro cards, an initial setting of CD_volume through the -sound card's MIXER register gets done. -If you are using a "compatible" sound card of types "LaserMate" or "SPEA", -you can set SOUND_BASE (in sbpcd.h) to get it done with your card, too... - - -Using audio CDs: ----------------- - -Workman, WorkBone, xcdplayer, cdplayer and the nice little tool "cdplay" (see -README.aztcd from the Aztech driver package) should work. - -The program CDplayer likes to talk to "/dev/mcd" only, xcdplayer wants -"/dev/rsr0", workman loves "/dev/sr0" or "/dev/cdrom" - so, make the -appropriate links to use them without the need to supply parameters. - - -Copying audio tracks: ---------------------- - -The following program will copy track 1 (or a piece of it) from an audio CD -into the file "track01": - -/*=================== begin program ========================================*/ -/* - * read an audio track from a CD - * - * (c) 1994 Eberhard Moenkeberg <emoenke@gwdg.de> - * may be used & enhanced freely - * - * Due to non-existent sync bytes at the beginning of each audio frame (or due - * to a firmware bug within all known drives?), it is currently a kind of - * fortune if two consecutive frames fit together. - * Usually, they overlap, or a little piece is missing. This happens in units - * of 24-byte chunks. It has to get fixed by higher-level software (reading - * until an overlap occurs, and then eliminate the overlapping chunks). - * ftp.gwdg.de:/pub/linux/misc/cdda2wav-sbpcd.*.tar.gz holds an example of - * such an algorithm. - * This example program further is missing to obtain the SubChannel data - * which belong to each frame. - * - * This is only an example of the low-level access routine. The read data are - * pure 16-bit CDDA values; they have to get converted to make sound out of - * them. - * It is no fun to listen to it without prior overlap/underlap correction! - */ -#include <stdio.h> -#include <sys/ioctl.h> -#include <sys/types.h> -#include <linux/cdrom.h> - -static struct cdrom_tochdr hdr; -static struct cdrom_tocentry entry[101]; -static struct cdrom_read_audio arg; -static u_char buffer[CD_FRAMESIZE_RAW]; -static int datafile, drive; -static int i, j, limit, track, err; -static char filename[32]; - -int main(int argc, char *argv[]) -{ -/* - * open /dev/cdrom - */ - drive=open("/dev/cdrom", 0); - if (drive<0) - { - fprintf(stderr, "can't open drive.\n"); - exit (-1); - } -/* - * get TocHeader - */ - fprintf(stdout, "getting TocHeader...\n"); - err=ioctl(drive, CDROMREADTOCHDR, &hdr); - if (err!=0) - { - fprintf(stderr, "can't get TocHeader (error %d).\n", err); - exit (-1); - } - else - fprintf(stdout, "TocHeader: %d %d\n", hdr.cdth_trk0, hdr.cdth_trk1); -/* - * get and display all TocEntries - */ - fprintf(stdout, "getting TocEntries...\n"); - for (i=1;i<=hdr.cdth_trk1+1;i++) - { - if (i!=hdr.cdth_trk1+1) entry[i].cdte_track = i; - else entry[i].cdte_track = CDROM_LEADOUT; - entry[i].cdte_format = CDROM_LBA; - err=ioctl(drive, CDROMREADTOCENTRY, &entry[i]); - if (err!=0) - { - fprintf(stderr, "can't get TocEntry #%d (error %d).\n", i, err); - exit (-1); - } - else - { - fprintf(stdout, "TocEntry #%d: %1X %1X %06X %02X\n", - entry[i].cdte_track, - entry[i].cdte_adr, - entry[i].cdte_ctrl, - entry[i].cdte_addr.lba, - entry[i].cdte_datamode); - } - } - fprintf(stdout, "got all TocEntries.\n"); -/* - * ask for track number (not implemented here) - */ -track=1; -#if 0 /* just read a little piece (4 seconds) */ -entry[track+1].cdte_addr.lba=entry[track].cdte_addr.lba+300; -#endif -/* - * read track into file - */ - sprintf(filename, "track%02d\0", track); - datafile=creat(filename, 0755); - if (datafile<0) - { - fprintf(stderr, "can't open datafile %s.\n", filename); - exit (-1); - } - arg.addr.lba=entry[track].cdte_addr.lba; - arg.addr_format=CDROM_LBA; /* CDROM_MSF would be possible here, too. */ - arg.nframes=1; - arg.buf=&buffer[0]; - limit=entry[track+1].cdte_addr.lba; - for (;arg.addr.lba<limit;arg.addr.lba++) - { - err=ioctl(drive, CDROMREADAUDIO, &arg); - if (err!=0) - { - fprintf(stderr, "can't read abs. frame #%d (error %d).\n", - arg.addr.lba, err); - } - j=write(datafile, &buffer[0], CD_FRAMESIZE_RAW); - if (j!=CD_FRAMESIZE_RAW) - { - fprintf(stderr,"I/O error (datafile) at rel. frame %d\n", - arg.addr.lba-entry[track].cdte_addr.lba); - } - arg.addr.lba++; - } - return 0; -} -/*===================== end program ========================================*/ - -At ftp.gwdg.de:/pub/linux/misc/cdda2wav-sbpcd.*.tar.gz is an adapted version of -Heiko Eissfeldt's digital-audio to .WAV converter (the original is there, too). -This is preliminary, as Heiko himself will care about it. - - -Known problems: ---------------- - -Currently, the detection of disk change or removal is actively disabled. - -Most attempts to read the UPC/EAN code result in a stream of zeroes. All my -drives are mostly telling there is no UPC/EAN code on disk or there is, but it -is an all-zero number. I guess now almost no CD holds such a number. - -Bug reports, comments, wishes, donations (technical information is a donation, -too :-) etc. to emoenke@gwdg.de. - -SnailMail address, preferable for CD editors if they want to submit a free -"cooperation" copy: - Eberhard Moenkeberg - Reinholdstr. 14 - D-37083 Goettingen - Germany ---- - - -Appendix -- the "cdtester" utility: - -/* - * cdtester.c -- test the audio functions of a CD driver - * - * (c) 1995 Eberhard Moenkeberg <emoenke@gwdg.de> - * published under the GPL - * - * made under heavy use of the "Tiny Audio CD Player" - * from Werner Zimmermann <zimmerma@rz.fht-esslingen.de> - * (see linux/drivers/block/README.aztcd) - */ -#undef AZT_PRIVATE_IOCTLS /* not supported by every CDROM driver */ -#define SBP_PRIVATE_IOCTLS /* not supported by every CDROM driver */ - -#include <stdio.h> -#include <stdio.h> -#include <malloc.h> -#include <sys/ioctl.h> -#include <sys/types.h> -#include <linux/cdrom.h> - -#ifdef AZT_PRIVATE_IOCTLS -#include <linux/../../drivers/cdrom/aztcd.h> -#endif /* AZT_PRIVATE_IOCTLS */ -#ifdef SBP_PRIVATE_IOCTLS -#include <linux/../../drivers/cdrom/sbpcd.h> -#include <linux/fs.h> -#endif /* SBP_PRIVATE_IOCTLS */ - -struct cdrom_tochdr hdr; -struct cdrom_tochdr tocHdr; -struct cdrom_tocentry TocEntry[101]; -struct cdrom_tocentry entry; -struct cdrom_multisession ms_info; -struct cdrom_read_audio read_audio; -struct cdrom_ti ti; -struct cdrom_subchnl subchnl; -struct cdrom_msf msf; -struct cdrom_volctrl volctrl; -#ifdef AZT_PRIVATE_IOCTLS -union -{ - struct cdrom_msf msf; - unsigned char buf[CD_FRAMESIZE_RAW]; -} azt; -#endif /* AZT_PRIVATE_IOCTLS */ -int i, i1, i2, i3, j, k; -unsigned char sequence=0; -unsigned char command[80]; -unsigned char first=1, last=1; -char *default_device="/dev/cdrom"; -char dev[20]; -char filename[20]; -int drive; -int datafile; -int rc; - -void help(void) -{ - printf("Available Commands:\n"); - printf("STOP s EJECT e QUIT q\n"); - printf("PLAY TRACK t PAUSE p RESUME r\n"); - printf("NEXT TRACK n REPEAT LAST l HELP h\n"); - printf("SUBCHANNEL_Q c TRACK INFO i PLAY AT a\n"); - printf("READ d READ RAW w READ AUDIO A\n"); - printf("MS-INFO M TOC T START S\n"); - printf("SET EJECTSW X DEVICE D DEBUG Y\n"); - printf("AUDIO_BUFSIZ Z RESET R SET VOLUME v\n"); - printf("GET VOLUME V\n"); -} - -/* - * convert MSF number (3 bytes only) to Logical_Block_Address - */ -int msf2lba(u_char *msf) -{ - int i; - - i=(msf[0] * CD_SECS + msf[1]) * CD_FRAMES + msf[2] - CD_BLOCK_OFFSET; - if (i<0) return (0); - return (i); -} -/* - * convert logical_block_address to m-s-f_number (3 bytes only) - */ -void lba2msf(int lba, unsigned char *msf) -{ - lba += CD_BLOCK_OFFSET; - msf[0] = lba / (CD_SECS*CD_FRAMES); - lba %= CD_SECS*CD_FRAMES; - msf[1] = lba / CD_FRAMES; - msf[2] = lba % CD_FRAMES; -} - -int init_drive(char *dev) -{ - unsigned char msf_ent[3]; - - /* - * open the device - */ - drive=open(dev,0); - if (drive<0) return (-1); - /* - * get TocHeader - */ - printf("getting TocHeader...\n"); - rc=ioctl(drive,CDROMREADTOCHDR,&hdr); - if (rc!=0) - { - printf("can't get TocHeader (error %d).\n",rc); - return (-2); - } - else - first=hdr.cdth_trk0; - last=hdr.cdth_trk1; - printf("TocHeader: %d %d\n",hdr.cdth_trk0,hdr.cdth_trk1); - /* - * get and display all TocEntries - */ - printf("getting TocEntries...\n"); - for (i=1;i<=hdr.cdth_trk1+1;i++) - { - if (i!=hdr.cdth_trk1+1) TocEntry[i].cdte_track = i; - else TocEntry[i].cdte_track = CDROM_LEADOUT; - TocEntry[i].cdte_format = CDROM_LBA; - rc=ioctl(drive,CDROMREADTOCENTRY,&TocEntry[i]); - if (rc!=0) - { - printf("can't get TocEntry #%d (error %d).\n",i,rc); - } - else - { - lba2msf(TocEntry[i].cdte_addr.lba,&msf_ent[0]); - if (TocEntry[i].cdte_track==CDROM_LEADOUT) - { - printf("TocEntry #%02X: %1X %1X %02d:%02d:%02d (lba: 0x%06X) %02X\n", - TocEntry[i].cdte_track, - TocEntry[i].cdte_adr, - TocEntry[i].cdte_ctrl, - msf_ent[0], - msf_ent[1], - msf_ent[2], - TocEntry[i].cdte_addr.lba, - TocEntry[i].cdte_datamode); - } - else - { - printf("TocEntry #%02d: %1X %1X %02d:%02d:%02d (lba: 0x%06X) %02X\n", - TocEntry[i].cdte_track, - TocEntry[i].cdte_adr, - TocEntry[i].cdte_ctrl, - msf_ent[0], - msf_ent[1], - msf_ent[2], - TocEntry[i].cdte_addr.lba, - TocEntry[i].cdte_datamode); - } - } - } - return (hdr.cdth_trk1); /* number of tracks */ -} - -void display(int size,unsigned char *buffer) -{ - k=0; - getchar(); - for (i=0;i<(size+1)/16;i++) - { - printf("%4d:",i*16); - for (j=0;j<16;j++) - { - printf(" %02X",buffer[i*16+j]); - } - printf(" "); - for (j=0;j<16;j++) - { - if (isalnum(buffer[i*16+j])) - printf("%c",buffer[i*16+j]); - else - printf("."); - } - printf("\n"); - k++; - if (k>=20) - { - printf("press ENTER to continue\n"); - getchar(); - k=0; - } - } -} - -int main(int argc, char *argv[]) -{ - printf("\nTesting tool for a CDROM driver's audio functions V0.1\n"); - printf("(C) 1995 Eberhard Moenkeberg <emoenke@gwdg.de>\n"); - printf("initializing...\n"); - - rc=init_drive(default_device); - if (rc<0) printf("could not open %s (rc=%d).\n",default_device,rc); - help(); - while (1) - { - printf("Give a one-letter command (h = help): "); - scanf("%s",command); - command[1]=0; - switch (command[0]) - { - case 'D': - printf("device name (f.e. /dev/sbpcd3): ? "); - scanf("%s",&dev); - close(drive); - rc=init_drive(dev); - if (rc<0) printf("could not open %s (rc %d).\n",dev,rc); - break; - case 'e': - rc=ioctl(drive,CDROMEJECT); - if (rc<0) printf("CDROMEJECT: rc=%d.\n",rc); - break; - case 'p': - rc=ioctl(drive,CDROMPAUSE); - if (rc<0) printf("CDROMPAUSE: rc=%d.\n",rc); - break; - case 'r': - rc=ioctl(drive,CDROMRESUME); - if (rc<0) printf("CDROMRESUME: rc=%d.\n",rc); - break; - case 's': - rc=ioctl(drive,CDROMSTOP); - if (rc<0) printf("CDROMSTOP: rc=%d.\n",rc); - break; - case 'S': - rc=ioctl(drive,CDROMSTART); - if (rc<0) printf("CDROMSTART: rc=%d.\n",rc); - break; - case 't': - rc=ioctl(drive,CDROMREADTOCHDR,&tocHdr); - if (rc<0) - { - printf("CDROMREADTOCHDR: rc=%d.\n",rc); - break; - } - first=tocHdr.cdth_trk0; - last= tocHdr.cdth_trk1; - if ((first==0)||(first>last)) - { - printf ("--got invalid TOC data.\n"); - } - else - { - printf("--enter track number(first=%d, last=%d): ",first,last); - scanf("%d",&i1); - ti.cdti_trk0=i1; - if (ti.cdti_trk0<first) ti.cdti_trk0=first; - if (ti.cdti_trk0>last) ti.cdti_trk0=last; - ti.cdti_ind0=0; - ti.cdti_trk1=last; - ti.cdti_ind1=0; - rc=ioctl(drive,CDROMSTOP); - rc=ioctl(drive,CDROMPLAYTRKIND,&ti); - if (rc<0) printf("CDROMPLAYTRKIND: rc=%d.\n",rc); - } - break; - case 'n': - rc=ioctl(drive,CDROMSTOP); - if (++ti.cdti_trk0>last) ti.cdti_trk0=last; - ti.cdti_ind0=0; - ti.cdti_trk1=last; - ti.cdti_ind1=0; - rc=ioctl(drive,CDROMPLAYTRKIND,&ti); - if (rc<0) printf("CDROMPLAYTRKIND: rc=%d.\n",rc); - break; - case 'l': - rc=ioctl(drive,CDROMSTOP); - if (--ti.cdti_trk0<first) ti.cdti_trk0=first; - ti.cdti_ind0=0; - ti.cdti_trk1=last; - ti.cdti_ind1=0; - rc=ioctl(drive,CDROMPLAYTRKIND,&ti); - if (rc<0) printf("CDROMPLAYTRKIND: rc=%d.\n",rc); - break; - case 'c': - subchnl.cdsc_format=CDROM_MSF; - rc=ioctl(drive,CDROMSUBCHNL,&subchnl); - if (rc<0) printf("CDROMSUBCHNL: rc=%d.\n",rc); - else - { - printf("AudioStatus:%s Track:%d Mode:%d MSF=%02d:%02d:%02d\n", - subchnl.cdsc_audiostatus==CDROM_AUDIO_PLAY ? "PLAYING":"NOT PLAYING", - subchnl.cdsc_trk,subchnl.cdsc_adr, - subchnl.cdsc_absaddr.msf.minute, - subchnl.cdsc_absaddr.msf.second, - subchnl.cdsc_absaddr.msf.frame); - } - break; - case 'i': - printf("Track No.: "); - scanf("%d",&i1); - entry.cdte_track=i1; - if (entry.cdte_track<first) entry.cdte_track=first; - if (entry.cdte_track>last) entry.cdte_track=last; - entry.cdte_format=CDROM_MSF; - rc=ioctl(drive,CDROMREADTOCENTRY,&entry); - if (rc<0) printf("CDROMREADTOCENTRY: rc=%d.\n",rc); - else - { - printf("Mode %d Track, starts at %02d:%02d:%02d\n", - entry.cdte_adr, - entry.cdte_addr.msf.minute, - entry.cdte_addr.msf.second, - entry.cdte_addr.msf.frame); - } - break; - case 'a': - printf("Address (min:sec:frm) "); - scanf("%d:%d:%d",&i1,&i2,&i3); - msf.cdmsf_min0=i1; - msf.cdmsf_sec0=i2; - msf.cdmsf_frame0=i3; - if (msf.cdmsf_sec0>59) msf.cdmsf_sec0=59; - if (msf.cdmsf_frame0>74) msf.cdmsf_frame0=74; - lba2msf(TocEntry[last+1].cdte_addr.lba-1,&msf.cdmsf_min1); - rc=ioctl(drive,CDROMSTOP); - rc=ioctl(drive,CDROMPLAYMSF,&msf); - if (rc<0) printf("CDROMPLAYMSF: rc=%d.\n",rc); - break; - case 'V': - rc=ioctl(drive,CDROMVOLREAD,&volctrl); - if (rc<0) printf("CDROMVOLCTRL: rc=%d.\n",rc); - printf("Volume: channel 0 (left) %d, channel 1 (right) %d\n",volctrl.channel0,volctrl.channel1); - break; - case 'R': - rc=ioctl(drive,CDROMRESET); - if (rc<0) printf("CDROMRESET: rc=%d.\n",rc); - break; -#ifdef AZT_PRIVATE_IOCTLS /*not supported by every CDROM driver*/ - case 'd': - printf("Address (min:sec:frm) "); - scanf("%d:%d:%d",&i1,&i2,&i3); - azt.msf.cdmsf_min0=i1; - azt.msf.cdmsf_sec0=i2; - azt.msf.cdmsf_frame0=i3; - if (azt.msf.cdmsf_sec0>59) azt.msf.cdmsf_sec0=59; - if (azt.msf.cdmsf_frame0>74) azt.msf.cdmsf_frame0=74; - rc=ioctl(drive,CDROMREADMODE1,&azt.msf); - if (rc<0) printf("CDROMREADMODE1: rc=%d.\n",rc); - else display(CD_FRAMESIZE,azt.buf); - break; - case 'w': - printf("Address (min:sec:frame) "); - scanf("%d:%d:%d",&i1,&i2,&i3); - azt.msf.cdmsf_min0=i1; - azt.msf.cdmsf_sec0=i2; - azt.msf.cdmsf_frame0=i3; - if (azt.msf.cdmsf_sec0>59) azt.msf.cdmsf_sec0=59; - if (azt.msf.cdmsf_frame0>74) azt.msf.cdmsf_frame0=74; - rc=ioctl(drive,CDROMREADMODE2,&azt.msf); - if (rc<0) printf("CDROMREADMODE2: rc=%d.\n",rc); - else display(CD_FRAMESIZE_RAW,azt.buf); /* currently only 2336 */ - break; -#endif - case 'v': - printf("--Channel 0 (Left) (0-255): "); - scanf("%d",&i1); - volctrl.channel0=i1; - printf("--Channel 1 (Right) (0-255): "); - scanf("%d",&i1); - volctrl.channel1=i1; - volctrl.channel2=0; - volctrl.channel3=0; - rc=ioctl(drive,CDROMVOLCTRL,&volctrl); - if (rc<0) printf("CDROMVOLCTRL: rc=%d.\n",rc); - break; - case 'q': - close(drive); - exit(0); - case 'h': - help(); - break; - case 'T': /* display TOC entry - without involving the driver */ - scanf("%d",&i); - if ((i<hdr.cdth_trk0)||(i>hdr.cdth_trk1)) - printf("invalid track number.\n"); - else - printf("TocEntry %02d: adr=%01X ctrl=%01X msf=%02d:%02d:%02d mode=%02X\n", - TocEntry[i].cdte_track, - TocEntry[i].cdte_adr, - TocEntry[i].cdte_ctrl, - TocEntry[i].cdte_addr.msf.minute, - TocEntry[i].cdte_addr.msf.second, - TocEntry[i].cdte_addr.msf.frame, - TocEntry[i].cdte_datamode); - break; - case 'A': /* read audio data into file */ - printf("Address (min:sec:frm) ? "); - scanf("%d:%d:%d",&i1,&i2,&i3); - read_audio.addr.msf.minute=i1; - read_audio.addr.msf.second=i2; - read_audio.addr.msf.frame=i3; - read_audio.addr_format=CDROM_MSF; - printf("# of frames ? "); - scanf("%d",&i1); - read_audio.nframes=i1; - k=read_audio.nframes*CD_FRAMESIZE_RAW; - read_audio.buf=malloc(k); - if (read_audio.buf==NULL) - { - printf("can't malloc %d bytes.\n",k); - break; - } - sprintf(filename,"audio_%02d%02d%02d_%02d.%02d\0", - read_audio.addr.msf.minute, - read_audio.addr.msf.second, - read_audio.addr.msf.frame, - read_audio.nframes, - ++sequence); - datafile=creat(filename, 0755); - if (datafile<0) - { - printf("can't open datafile %s.\n",filename); - break; - } - rc=ioctl(drive,CDROMREADAUDIO,&read_audio); - if (rc!=0) - { - printf("CDROMREADAUDIO: rc=%d.\n",rc); - } - else - { - rc=write(datafile,&read_audio.buf,k); - if (rc!=k) printf("datafile I/O error (%d).\n",rc); - } - close(datafile); - break; - case 'X': /* set EJECT_SW (0: disable, 1: enable auto-ejecting) */ - scanf("%d",&i); - rc=ioctl(drive,CDROMEJECT_SW,i); - if (rc!=0) - printf("CDROMEJECT_SW: rc=%d.\n",rc); - else - printf("EJECT_SW set to %d\n",i); - break; - case 'M': /* get the multisession redirection info */ - ms_info.addr_format=CDROM_LBA; - rc=ioctl(drive,CDROMMULTISESSION,&ms_info); - if (rc!=0) - { - printf("CDROMMULTISESSION(lba): rc=%d.\n",rc); - } - else - { - if (ms_info.xa_flag) printf("MultiSession offset (lba): %d (0x%06X)\n",ms_info.addr.lba,ms_info.addr.lba); - else - { - printf("this CD is not an XA disk.\n"); - break; - } - } - ms_info.addr_format=CDROM_MSF; - rc=ioctl(drive,CDROMMULTISESSION,&ms_info); - if (rc!=0) - { - printf("CDROMMULTISESSION(msf): rc=%d.\n",rc); - } - else - { - if (ms_info.xa_flag) - printf("MultiSession offset (msf): %02d:%02d:%02d (0x%02X%02X%02X)\n", - ms_info.addr.msf.minute, - ms_info.addr.msf.second, - ms_info.addr.msf.frame, - ms_info.addr.msf.minute, - ms_info.addr.msf.second, - ms_info.addr.msf.frame); - else printf("this CD is not an XA disk.\n"); - } - break; -#ifdef SBP_PRIVATE_IOCTLS - case 'Y': /* set the driver's message level */ -#if 0 /* not implemented yet */ - printf("enter switch name (f.e. DBG_CMD): "); - scanf("%s",&dbg_switch); - j=get_dbg_num(dbg_switch); -#else - printf("enter DDIOCSDBG switch number: "); - scanf("%d",&j); -#endif - printf("enter 0 for \"off\", 1 for \"on\": "); - scanf("%d",&i); - if (i==0) j|=0x80; - printf("calling \"ioctl(drive,DDIOCSDBG,%d)\"\n",j); - rc=ioctl(drive,DDIOCSDBG,j); - printf("DDIOCSDBG: rc=%d.\n",rc); - break; - case 'Z': /* set the audio buffer size */ - printf("# frames wanted: ? "); - scanf("%d",&j); - rc=ioctl(drive,CDROMAUDIOBUFSIZ,j); - printf("%d frames granted.\n",rc); - break; -#endif /* SBP_PRIVATE_IOCTLS */ - default: - printf("unknown command: \"%s\".\n",command); - break; - } - } - return 0; -} -/*==========================================================================*/ - diff --git a/Documentation/cdrom/sjcd b/Documentation/cdrom/sjcd deleted file mode 100644 index 74a14847b93..00000000000 --- a/Documentation/cdrom/sjcd +++ /dev/null @@ -1,60 +0,0 @@ - -- Documentation/cdrom/sjcd - 80% of the work takes 20% of the time, - 20% of the work takes 80% of the time... - (Murphy's law) - - Once started, training can not be stopped... - (Star Wars) - -This is the README for the sjcd cdrom driver, version 1.6. - -This file is meant as a tips & tricks edge for the usage of the SANYO CDR-H94A -cdrom drive. It will grow as the questions arise. ;-) -For info on configuring the ISP16 sound card look at Documentation/cdrom/isp16. - -The driver should work with any of the Panasonic, Sony or Mitsumi style -CDROM interfaces. -The cdrom interface on Media Magic's soft configurable sound card ISP16, -which used to be included in the driver, is now supported in a separate module. -This initialisation module will probably also work with other interfaces -based on an OPTi 82C928 or 82C929 chip (like MAD16 and Mozart): see the -documentation Documentation/cdrom/isp16. - -The device major for sjcd is 18, and minor is 0. Create a block special -file in your /dev directory (e.g., /dev/sjcd) with these numbers. -(For those who don't know, being root and doing the following should do -the trick: - mknod -m 644 /dev/sjcd b 18 0 -and mount the cdrom by /dev/sjcd). - -The default configuration parameters are: - base address 0x340 - no irq - no dma -(Actually the CDR-H94A doesn't know how to use irq and dma.) -As of version 1.2, setting base address at boot time is supported -through the use of command line options: type at the "boot:" prompt: - linux sjcd=<base_address> -(where you would use the kernel labeled "linux" in lilo's configuration -file /etc/lilo.conf). You could also use 'append="sjcd=<configuration_info>"' -in the appropriate section of /etc/lilo.conf -If you're building a kernel yourself you can set your default base -i/o address with SJCD_BASE_ADDR in /usr/src/linux/drivers/cdrom/sjcd.h. - -The sjcd driver supports being loaded as a module. The following -command will set the base i/o address on the fly (assuming you -have installed the module in an appropriate place). - insmod sjcd.o sjcd_base=<base_address> - - -Have fun! - -If something is wrong, please email to vadim@rbrf.ru - or vadim@ipsun.ras.ru - or model@cecmow.enet.dec.com - or H.T.M.v.d.Maarel@marin.nl - -It happens sometimes that Vadim is not reachable by mail. For these -instances, Eric van der Maarel will help too. - - Vadim V. Model, Eric van der Maarel, Eberhard Moenkeberg diff --git a/Documentation/cdrom/sonycd535 b/Documentation/cdrom/sonycd535 deleted file mode 100644 index b81e109970a..00000000000 --- a/Documentation/cdrom/sonycd535 +++ /dev/null @@ -1,122 +0,0 @@ - README FOR LINUX SONY CDU-535/531 DRIVER - ======================================== - -This is the Sony CDU-535 (and 531) driver version 0.7 for Linux. -I do not think I have the documentation to add features like DMA support -so if anyone else wants to pursue it or help me with it, please do. -(I need to see what was done for the CDU-31A driver -- perhaps I can -steal some of that code.) - -This is a Linux device driver for the Sony CDU-535 CDROM drive. This is -one of the older Sony drives with its own interface card (Sony bus). -The DOS driver for this drive is named SONY_CDU.SYS - when you boot DOS -your drive should be identified as a SONY CDU-535. The driver works -with a CDU-531 also. One user reported that the driver worked on drives -OEM'ed by Procomm, drive and interface board were labelled Procomm. - -The Linux driver is based on Corey Minyard's sonycd 0.3 driver for -the CDU-31A. Ron Jeppesen just changed the commands that were sent -to the drive to correspond to the CDU-535 commands and registers. -There were enough changes to let bugs creep in but it seems to be stable. -Ron was able to tar an entire CDROM (should read all blocks) and built -ghostview and xfig off Walnut Creek's X11R5/GNU CDROM. xcdplayer and -workman work with the driver. Others have used the driver without -problems except those dealing with wait loops (fixed in third release). -Like Minyard's original driver this one uses a polled interface (this -is also the default setup for the DOS driver). It has not been tried -with interrupts or DMA enabled on the board. - -REQUIREMENTS -============ - - - Sony CDU-535 drive, preferably without interrupts and DMA - enabled on the card. - - - Drive must be set up as unit 1. Only the first unit will be - recognized - - - You must enter your interface address into - /usr/src/linux/drivers/cdrom/sonycd535.h and build the - appropriate kernel or use the "kernel command line" parameter - sonycd535=0x320 - with the correct interface address. - -NOTES: -====== - -1) The drive MUST be turned on when booting or it will not be recognized! - (but see comments on modularized version below) - -2) when the cdrom device is opened the eject button is disabled to keep the - user from ejecting a mounted disk and replacing it with another. - Unfortunately xcdplayer and workman also open the cdrom device so you - have to use the eject button in the software. Keep this in mind if your - cdrom player refuses to give up its disk -- exit workman or xcdplayer, or - umount the drive if it has been mounted. - -THANKS -====== - -Many thanks to Ron Jeppesen (ronj.an@site007.saic.com) for getting -this project off the ground. He wrote the initial release -and the first two patches to this driver (0.1, 0.2, and 0.3). -Thanks also to Eberhard Moenkeberg (emoenke@gwdg.de) for prodding -me to place this code into the mainstream Linux source tree -(as of Linux version 1.1.91), as well as some patches to make -it a better device citizen. Further thanks to Joel Katz -<joelkatz@webchat.org> for his MODULE patches (see details below), -Porfiri Claudio <C.Porfiri@nisms.tei.ericsson.se> for patches -to make the driver work with the older CDU-510/515 series, and -Heiko Eissfeldt <heiko@colossus.escape.de> for pointing out that -the verify_area() checks were ignoring the results of said checks -(note: verify_area() has since been replaced by access_ok()). - -(Acknowledgments from Ron Jeppesen in the 0.3 release:) -Thanks to Corey Minyard who wrote the original CDU-31A driver on which -this driver is based. Thanks to Ken Pizzini and Bob Blair who provided -patches and feedback on the first release of this driver. - -Ken Pizzini -ken@halcyon.com - ------------------------------------------------------------------------------- -(The following is from Joel Katz <joelkatz@webchat.org>.) - - To build a version of sony535.o that can be installed as a module, -use the following command: - -gcc -c -D__KERNEL__ -DMODULE -O2 sonycd535.c -o sonycd535.o - - To install the module, simply type: - -insmod sony535.o - or -insmod sony535.o sonycd535=<address> - - And to remove it: - -rmmod sony535 - - The code checks to see if MODULE is defined and behaves as it used -to if MODULE is not defined. That means your patched file should behave -exactly as it used to if compiled into the kernel. - - I have an external drive, and I usually leave it powered off. I used -to have to reboot if I needed to use the CDROM drive. Now I don't. - - Even if you have an internal drive, why waste the 96K of memory -(unswappable) that the driver uses if you use your CD-ROM drive infrequently? - - This driver will not install (whether compiled in or loaded as a -module) if the CDROM drive is not available during its initialization. This -means that you can have the driver compiled into the kernel and still load -the module later (assuming the driver doesn't install itself during -power-on). This only wastes 12K when you boot with the CDROM drive off. - - This is what I usually do; I leave the driver compiled into the -kernel, but load it as a module if I powered the system up with the drive -off and then later decided to use the CDROM drive. - - Since the driver only uses a single page to point to the chunks, -attempting to set the buffer cache to more than 2 Megabytes would be very -bad; don't do that. diff --git a/Documentation/fault-injection/failcmd.sh b/Documentation/fault-injection/failcmd.sh deleted file mode 100644 index 63177aba810..00000000000 --- a/Documentation/fault-injection/failcmd.sh +++ /dev/null @@ -1,4 +0,0 @@ -#!/bin/bash - -echo 1 > /proc/self/make-it-fail -exec $* diff --git a/Documentation/fault-injection/failmodule.sh b/Documentation/fault-injection/failmodule.sh deleted file mode 100644 index 474a8b971f9..00000000000 --- a/Documentation/fault-injection/failmodule.sh +++ /dev/null @@ -1,31 +0,0 @@ -#!/bin/bash -# -# Usage: failmodule <failname> <modulename> [stacktrace-depth] -# -# <failname>: "failslab", "fail_alloc_page", or "fail_make_request" -# -# <modulename>: module name that you want to inject faults. -# -# [stacktrace-depth]: the maximum number of stacktrace walking allowed -# - -STACKTRACE_DEPTH=5 -if [ $# -gt 2 ]; then - STACKTRACE_DEPTH=$3 -fi - -if [ ! -d /debug/$1 ]; then - echo "Fault-injection $1 does not exist" >&2 - exit 1 -fi -if [ ! -d /sys/module/$2 ]; then - echo "Module $2 does not exist" >&2 - exit 1 -fi - -# Disable any fault injection -echo 0 > /debug/$1/stacktrace-depth - -echo `cat /sys/module/$2/sections/.text` > /debug/$1/require-start -echo `cat /sys/module/$2/sections/.exit.text` > /debug/$1/require-end -echo $STACKTRACE_DEPTH > /debug/$1/stacktrace-depth diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt index b7ca560b934..4bc374a1434 100644 --- a/Documentation/fault-injection/fault-injection.txt +++ b/Documentation/fault-injection/fault-injection.txt @@ -103,6 +103,11 @@ configuration of fault-injection capabilities. default is 'N', setting it to 'Y' will inject failures only into non-sleep allocations (GFP_ATOMIC allocations). +- /debug/fail_page_alloc/min-order: + + specifies the minimum page allocation order to be injected + failures. + o Boot option In order to inject faults while debugfs is not available (early boot time), @@ -156,70 +161,77 @@ o add a hook to insert failures Application Examples -------------------- -o inject slab allocation failures into module init/cleanup code +o Inject slab allocation failures into module init/exit code ------------------------------------------------------------------------------- #!/bin/bash -FAILCMD=Documentation/fault-injection/failcmd.sh -BLACKLIST="root_plug evbug" - -FAILNAME=failslab -echo Y > /debug/$FAILNAME/task-filter -echo 10 > /debug/$FAILNAME/probability -echo 100 > /debug/$FAILNAME/interval -echo -1 > /debug/$FAILNAME/times -echo 2 > /debug/$FAILNAME/verbose -echo 1 > /debug/$FAILNAME/ignore-gfp-wait +FAILTYPE=failslab +echo Y > /debug/$FAILTYPE/task-filter +echo 10 > /debug/$FAILTYPE/probability +echo 100 > /debug/$FAILTYPE/interval +echo -1 > /debug/$FAILTYPE/times +echo 0 > /debug/$FAILTYPE/space +echo 2 > /debug/$FAILTYPE/verbose +echo 1 > /debug/$FAILTYPE/ignore-gfp-wait -blacklist() +faulty_system() { - echo $BLACKLIST | grep $1 > /dev/null 2>&1 + bash -c "echo 1 > /proc/self/make-it-fail && exec $*" } -oops() -{ - dmesg | grep BUG > /dev/null 2>&1 -} +if [ $# -eq 0 ] +then + echo "Usage: $0 modulename [ modulename ... ]" + exit 1 +fi + +for m in $* +do + echo inserting $m... + faulty_system modprobe $m -find /lib/modules/`uname -r` -name '*.ko' -exec basename {} .ko \; | - while read i - do - oops && exit 1 - - if ! blacklist $i - then - echo inserting $i... - bash $FAILCMD modprobe $i - fi - done - -lsmod | awk '{ if ($3 == 0) { print $1 } }' | - while read i - do - oops && exit 1 - - if ! blacklist $i - then - echo removing $i... - bash $FAILCMD modprobe -r $i - fi - done + echo removing $m... + faulty_system modprobe -r $m +done ------------------------------------------------------------------------------ -o inject slab allocation failures only for a specific module +o Inject page allocation failures only for a specific module ------------------------------------------------------------------------------- #!/bin/bash -FAILMOD=Documentation/fault-injection/failmodule.sh +FAILTYPE=fail_page_alloc +module=$1 -echo injecting errors into the module $1... +if [ -z $module ] +then + echo "Usage: $0 <modulename>" + exit 1 +fi -modprobe $1 -bash $FAILMOD failslab $1 10 -echo 25 > /debug/failslab/probability +modprobe $module ------------------------------------------------------------------------------- +if [ ! -d /sys/module/$module/sections ] +then + echo Module $module is not loaded + exit 1 +fi + +cat /sys/module/$module/sections/.text > /debug/$FAILTYPE/require-start +cat /sys/module/$module/sections/.data > /debug/$FAILTYPE/require-end + +echo N > /debug/$FAILTYPE/task-filter +echo 10 > /debug/$FAILTYPE/probability +echo 100 > /debug/$FAILTYPE/interval +echo -1 > /debug/$FAILTYPE/times +echo 0 > /debug/$FAILTYPE/space +echo 2 > /debug/$FAILTYPE/verbose +echo 1 > /debug/$FAILTYPE/ignore-gfp-wait +echo 1 > /debug/$FAILTYPE/ignore-gfp-highmem +echo 10 > /debug/$FAILTYPE/stacktrace-depth + +trap "echo 0 > /debug/$FAILTYPE/probability" SIGINT SIGTERM EXIT + +echo "Injecting errors into the module $module... (interrupt to stop)" +sleep 1000000 diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 092c65dd35c..18bd2ddccb1 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -41,14 +41,6 @@ Who: Pavel Machek <pavel@suse.cz> --------------------------- -What: RAW driver (CONFIG_RAW_DRIVER) -When: December 2005 -Why: declared obsolete since kernel 2.6.3 - O_DIRECT can be used instead -Who: Adrian Bunk <bunk@stusta.de> - ---------------------------- - What: old NCR53C9x driver When: October 2007 Why: Replaced by the much better esp_scsi driver. Actual low-level @@ -119,13 +111,6 @@ Who: Adrian Bunk <bunk@stusta.de> --------------------------- -What: drivers depending on OSS_OBSOLETE_DRIVER -When: options in 2.6.20, code in 2.6.22 -Why: OSS drivers with ALSA replacements -Who: Adrian Bunk <bunk@stusta.de> - ---------------------------- - What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports (temporary transition config option provided until then) The transition config option will also be removed at the same time. @@ -264,6 +249,14 @@ Who: Jean Delvare <khali@linux-fr.org> --------------------------- +What: 'time' kernel boot parameter +When: January 2008 +Why: replaced by 'printk.time=<value>' so that printk timestamps can be + enabled or disabled as needed +Who: Randy Dunlap <randy.dunlap@oracle.com> + +--------------------------- + What: drivers depending on OSS_OBSOLETE When: options in 2.6.23, code in 2.6.25 Why: obsolete OSS drivers diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index 8756a07f4dc..460b892d089 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -171,7 +171,9 @@ read the file /proc/PID/status: This shows you nearly the same information you would get if you viewed it with the ps command. In fact, ps uses the proc file system to obtain its information. The statm file contains more detailed information about the -process memory usage. Its seven fields are explained in Table 1-2. +process memory usage. Its seven fields are explained in Table 1-2. The stat +file contains details information about the process itself. Its fields are +explained in Table 1-3. Table 1-2: Contents of the statm files (as of 2.6.8-rc3) @@ -188,16 +190,65 @@ Table 1-2: Contents of the statm files (as of 2.6.8-rc3) dt number of dirty pages (always 0 on 2.6) .............................................................................. + +Table 1-3: Contents of the stat files (as of 2.6.22-rc3) +.............................................................................. + Field Content + pid process id + tcomm filename of the executable + state state (R is running, S is sleeping, D is sleeping in an + uninterruptible wait, Z is zombie, T is traced or stopped) + ppid process id of the parent process + pgrp pgrp of the process + sid session id + tty_nr tty the process uses + tty_pgrp pgrp of the tty + flags task flags + min_flt number of minor faults + cmin_flt number of minor faults with child's + maj_flt number of major faults + cmaj_flt number of major faults with child's + utime user mode jiffies + stime kernel mode jiffies + cutime user mode jiffies with child's + cstime kernel mode jiffies with child's + priority priority level + nice nice level + num_threads number of threads + start_time time the process started after system boot + vsize virtual memory size + rss resident set memory size + rsslim current limit in bytes on the rss + start_code address above which program text can run + end_code address below which program text can run + start_stack address of the start of the stack + esp current value of ESP + eip current value of EIP + pending bitmap of pending signals (obsolete) + blocked bitmap of blocked signals (obsolete) + sigign bitmap of ignored signals (obsolete) + sigcatch bitmap of catched signals (obsolete) + wchan address where process went to sleep + 0 (place holder) + 0 (place holder) + exit_signal signal to send to parent thread on exit + task_cpu which CPU the task is scheduled on + rt_priority realtime priority + policy scheduling policy (man sched_setscheduler) + blkio_ticks time spent waiting for block IO +.............................................................................. + + 1.2 Kernel data --------------- Similar to the process entries, the kernel data files give information about the running kernel. The files used to obtain this information are contained in -/proc and are listed in Table 1-3. Not all of these will be present in your +/proc and are listed in Table 1-4. Not all of these will be present in your system. It depends on the kernel configuration and the loaded modules, which files are there, and which are missing. -Table 1-3: Kernel info in /proc +Table 1-4: Kernel info in /proc .............................................................................. File Content apm Advanced power management info @@ -473,10 +524,10 @@ IDE devices: More detailed information can be found in the controller specific subdirectories. These are named ide0, ide1 and so on. Each of these -directories contains the files shown in table 1-4. +directories contains the files shown in table 1-5. -Table 1-4: IDE controller info in /proc/ide/ide? +Table 1-5: IDE controller info in /proc/ide/ide? .............................................................................. File Content channel IDE channel (0 or 1) @@ -486,11 +537,11 @@ Table 1-4: IDE controller info in /proc/ide/ide? .............................................................................. Each device connected to a controller has a separate subdirectory in the -controllers directory. The files listed in table 1-5 are contained in these +controllers directory. The files listed in table 1-6 are contained in these directories. -Table 1-5: IDE device information +Table 1-6: IDE device information .............................................................................. File Content cache The cache diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index a47cc819f37..045f3e055a2 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -3,7 +3,7 @@ Original author: Richard Gooch <rgooch@atnf.csiro.au> - Last updated on October 28, 2005 + Last updated on June 24, 2007. Copyright (C) 1999 Richard Gooch Copyright (C) 2005 Pekka Enberg @@ -107,7 +107,7 @@ file /proc/filesystems. struct file_system_type ----------------------- -This describes the filesystem. As of kernel 2.6.13, the following +This describes the filesystem. As of kernel 2.6.22, the following members are defined: struct file_system_type { @@ -119,6 +119,8 @@ struct file_system_type { struct module *owner; struct file_system_type * next; struct list_head fs_supers; + struct lock_class_key s_lock_key; + struct lock_class_key s_umount_key; }; name: the name of the filesystem type, such as "ext2", "iso9660", @@ -137,11 +139,12 @@ struct file_system_type { next: for internal VFS use: you should initialize this to NULL + s_lock_key, s_umount_key: lockdep-specific + The get_sb() method has the following arguments: - struct super_block *sb: the superblock structure. This is partially - initialized by the VFS and the rest must be initialized by the - get_sb() method + struct file_system_type *fs_type: decribes the filesystem, partly initialized + by the specific filesystem code int flags: mount flags @@ -150,12 +153,13 @@ The get_sb() method has the following arguments: void *data: arbitrary mount options, usually comes as an ASCII string - int silent: whether or not to be silent on error + struct vfsmount *mnt: a vfs-internal representation of a mount point The get_sb() method must determine if the block device specified -in the superblock contains a filesystem of the type the method -supports. On success the method returns the superblock pointer, on -failure it returns NULL. +in the dev_name and fs_type contains a filesystem of the type the method +supports. If it succeeds in opening the named block device, it initializes a +struct super_block descriptor for the filesystem contained by the block device. +On failure it returns an error. The most interesting member of the superblock structure that the get_sb() method fills in is the "s_op" field. This is a pointer to @@ -193,7 +197,7 @@ struct super_operations ----------------------- This describes how the VFS can manipulate the superblock of your -filesystem. As of kernel 2.6.13, the following members are defined: +filesystem. As of kernel 2.6.22, the following members are defined: struct super_operations { struct inode *(*alloc_inode)(struct super_block *sb); @@ -216,8 +220,6 @@ struct super_operations { void (*clear_inode) (struct inode *); void (*umount_begin) (struct super_block *); - void (*sync_inodes) (struct super_block *sb, - struct writeback_control *wbc); int (*show_options)(struct seq_file *, struct vfsmount *); ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t); @@ -300,9 +302,6 @@ or bottom half). umount_begin: called when the VFS is unmounting a filesystem. - sync_inodes: called when the VFS is writing out dirty data associated with - a superblock. - show_options: called by the VFS to show mount options for /proc/<pid>/mounts. quota_read: called by the VFS to read from filesystem quota file. @@ -324,7 +323,7 @@ struct inode_operations ----------------------- This describes how the VFS can manipulate an inode in your -filesystem. As of kernel 2.6.13, the following members are defined: +filesystem. As of kernel 2.6.22, the following members are defined: struct inode_operations { int (*create) (struct inode *,struct dentry *,int, struct nameidata *); @@ -348,6 +347,7 @@ struct inode_operations { ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t); ssize_t (*listxattr) (struct dentry *, char *, size_t); int (*removexattr) (struct dentry *, const char *); + void (*truncate_range)(struct inode *, loff_t, loff_t); }; Again, all methods are called without any locks being held, unless @@ -444,6 +444,9 @@ otherwise noted. removexattr: called by the VFS to remove an extended attribute from a file. This method is called by removexattr(2) system call. + truncate_range: a method provided by the underlying filesystem to truncate a + range of blocks , i.e. punch a hole somewhere in a file. + The Address Space Object ======================== @@ -522,7 +525,7 @@ struct address_space_operations ------------------------------- This describes how the VFS can manipulate mapping of a file to page cache in -your filesystem. As of kernel 2.6.16, the following members are defined: +your filesystem. As of kernel 2.6.22, the following members are defined: struct address_space_operations { int (*writepage)(struct page *page, struct writeback_control *wbc); @@ -543,6 +546,7 @@ struct address_space_operations { int); /* migrate the contents of a page to the specified target */ int (*migratepage) (struct page *, struct page *); + int (*launder_page) (struct page *); }; writepage: called by the VM to write a dirty page to backing store. @@ -689,6 +693,10 @@ struct address_space_operations { transfer any private data across and update any references that it has to the page. + launder_page: Called before freeing a page - it writes back the dirty page. To + prevent redirtying the page, it is kept locked during the whole + operation. + The File Object =============== @@ -699,9 +707,10 @@ struct file_operations ---------------------- This describes how the VFS can manipulate an open file. As of kernel -2.6.17, the following members are defined: +2.6.22, the following members are defined: struct file_operations { + struct module *owner; loff_t (*llseek) (struct file *, loff_t, int); ssize_t (*read) (struct file *, char __user *, size_t, loff_t *); ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *); @@ -728,10 +737,8 @@ struct file_operations { int (*check_flags)(int); int (*dir_notify)(struct file *filp, unsigned long arg); int (*flock) (struct file *, int, struct file_lock *); - ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, size_t, unsigned -int); - ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned -int); + ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, size_t, unsigned int); + ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned int); }; Again, all methods are called without any locks being held, unless diff --git a/Documentation/hrtimer/timer_stats.txt b/Documentation/hrtimer/timer_stats.txt index 22b0814d0ad..20d368c5981 100644 --- a/Documentation/hrtimer/timer_stats.txt +++ b/Documentation/hrtimer/timer_stats.txt @@ -67,3 +67,7 @@ executed on expiry. Thomas, Ingo +Added flag to indicate 'deferrable timer' in /proc/timer_stats. A deferrable +timer will appear as follows + 10D, 1 swapper queue_delayed_work_on (delayed_work_timer_fn) + diff --git a/Documentation/ioctl-number.txt b/Documentation/ioctl-number.txt index 3de7d379cf0..5c7fbf9d96b 100644 --- a/Documentation/ioctl-number.txt +++ b/Documentation/ioctl-number.txt @@ -67,7 +67,7 @@ Code Seq# Include File Comments 0x00 00-1F linux/wavefront.h conflict! 0x02 all linux/fd.h 0x03 all linux/hdreg.h -0x04 all linux/umsdos_fs.h +0x04 D2-DC linux/umsdos_fs.h Dead since 2.6.11, but don't reuse these. 0x06 all linux/lp.h 0x09 all linux/md.h 0x12 all linux/fs.h diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 4d880b3d1f3..8363ad3ba01 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -34,7 +34,6 @@ parameter is applicable: APIC APIC support is enabled. APM Advanced Power Management support is enabled. AX25 Appropriate AX.25 support is enabled. - CD Appropriate CD support is enabled. DRM Direct Rendering Management support is enabled. EDD BIOS Enhanced Disk Drive Services (EDD) is enabled EFI EFI Partitioning (GPT) is enabled @@ -238,16 +237,9 @@ and is between 256 and 4096 characters. It is defined in the file Disable PIN 1 of APIC timer Can be useful to work around chipset bugs. - ad1816= [HW,OSS] - Format: <io>,<irq>,<dma>,<dma2> - See also Documentation/sound/oss/AD1816. - ad1848= [HW,OSS] Format: <io>,<irq>,<dma>,<dma2>,<type> - adlib= [HW,OSS] - Format: <io> - advansys= [HW,SCSI] See header of drivers/scsi/advansys.c. @@ -326,9 +318,6 @@ and is between 256 and 4096 characters. It is defined in the file autotest [IA64] - aztcd= [HW,CD] Aztech CD268 CDROM driver - Format: <io>,0x79 (?) - baycom_epp= [HW,AX25] Format: <io>,<mode> @@ -371,10 +360,6 @@ and is between 256 and 4096 characters. It is defined in the file possible to determine what the correct size should be. This option provides an override for these situations. - cdu31a= [HW,CD] - Format: <io>,<irq>[,PAS] - See header of drivers/cdrom/cdu31a.c. - chandev= [HW,NET] Generic channel device initialisation checkreqprot [SELINUX] Set initial checkreqprot flag value. @@ -428,9 +413,6 @@ and is between 256 and 4096 characters. It is defined in the file hpet= [IA-32,HPET] option to disable HPET and use PIT. Format: disable - cm206= [HW,CD] - Format: { auto | [<io>,][<irq>] } - com20020= [HW,NET] ARCnet - COM20020 chipset Format: <io>[,<irq>[,<nodeID>[,<backplane>[,<ckp>[,<timeout>]]]]] @@ -462,13 +444,20 @@ and is between 256 and 4096 characters. It is defined in the file Documentation/networking/netconsole.txt for an alternative. - uart,io,<addr>[,options] - uart,mmio,<addr>[,options] + uart[8250],io,<addr>[,options] + uart[8250],mmio,<addr>[,options] Start an early, polled-mode console on the 8250/16550 UART at the specified I/O port or MMIO address, switching to the matching ttyS device later. The options are the same as for ttyS, above. + earlycon= [KNL] Output early console device and options. + uart[8250],io,<addr>[,options] + uart[8250],mmio,<addr>[,options] + Start an early, polled-mode console on the 8250/16550 + UART at the specified I/O port or MMIO address. + The options are the same as for ttyS, above. + cpcihp_generic= [HW,PCI] Generic port I/O CompactPCI driver Format: <first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>] @@ -660,9 +649,6 @@ and is between 256 and 4096 characters. It is defined in the file gpt [EFI] Forces disk with valid GPT signature but invalid Protective MBR to be treated as GPT. - gscd= [HW,CD] - Format: <io> - gvp11= [HW,SCSI] hashdist= [KNL,NUMA] Large hashes allocated during boot @@ -826,9 +812,6 @@ and is between 256 and 4096 characters. It is defined in the file tasks in the system -- can cause problems and suboptimal load balancer performance. - isp16= [HW,CD] - Format: <io>,<irq>,<dma>,<setup> - iucv= [HW,NET] js= [HW,JOY] Analog joystick @@ -967,11 +950,6 @@ and is between 256 and 4096 characters. It is defined in the file mcatest= [IA-64] - mcd= [HW,CD] - Format: <port>,<irq>,<mitsumi_bug_93_wait> - - mcdx= [HW,CD] - mce [IA-32] Machine Check Exception md= [HW] RAID subsystems devices and level @@ -1181,6 +1159,8 @@ and is between 256 and 4096 characters. It is defined in the file nosmp [SMP] Tells an SMP kernel to act as a UP kernel. + nosoftlockup [KNL] Disable the soft-lockup detector. + nosync [HW,M68K] Disables sync negotiation for all devices. notsc [BUGS=IA-32] Disable Time Stamp Counter @@ -1189,20 +1169,19 @@ and is between 256 and 4096 characters. It is defined in the file nowb [ARM] + numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA. + one of ['zone', 'node', 'default'] can be specified + This can be set from sysctl after boot. + See Documentation/sysctl/vm.txt for details. + nr_uarts= [SERIAL] maximum number of UARTs to be registered. opl3= [HW,OSS] Format: <io> - opl3sa2= [HW,OSS] Format: - <io>,<irq>,<dma>,<dma2>,<mss_io>,<mpu_io>,<ymode>,<loopback>[,<isapnp>,<multiple] - oprofile.timer= [HW] Use timer interrupt instead of performance counters - optcd= [HW,CD] - Format: <io> - osst= [HW,SCSI] SCSI Tape Driver Format: <buffer_size>,<write_threshold> See also Documentation/scsi/st.txt. @@ -1381,6 +1360,15 @@ and is between 256 and 4096 characters. It is defined in the file autoconfiguration. Ranges are in pairs (memory base and size). + print-fatal-signals= + [KNL] debug: print fatal signals + print-fatal-signals=1: print segfault info to + the kernel console. + default: off. + + printk.time= Show timing data prefixed to each printk message line + Format: <bool> (1/Y/y=enable, 0/N/n=disable) + profile= [KNL] Enable kernel profiling via /proc/profile Format: [schedule,]<number> Param: "schedule" - profile schedule points. @@ -1493,6 +1481,10 @@ and is between 256 and 4096 characters. It is defined in the file rootfstype= [KNL] Set root filesystem type + rootwait [KNL] Wait (indefinitely) for root device to show up. + Useful for devices that are detected asynchronously + (e.g. USB and MMC devices). + rw [KNL] Mount root device read-write on boot S [KNL] Run init in single mode @@ -1505,11 +1497,6 @@ and is between 256 and 4096 characters. It is defined in the file sbni= [NET] Granch SBNI12 leased line adapter - sbpcd= [HW,CD] Soundblaster CD adapter - Format: <io>,<type> - See a comment before function sbpcd_setup() in - drivers/cdrom/sbpcd.c. - sc1200wdt= [HW,WDT] SC1200 WDT (watchdog) driver Format: <io>[,<timeout>[,<isapnp>]] @@ -1562,41 +1549,41 @@ and is between 256 and 4096 characters. It is defined in the file simeth= [IA-64] simscsi= - sjcd= [HW,CD] - Format: <io>,<irq>,<dma> - See header of drivers/cdrom/sjcd.c. - slram= [HW,MTD] - slub_debug [MM, SLUB] - Enabling slub_debug allows one to determine the culprit - if slab objects become corrupted. Enabling slub_debug - creates guard zones around objects and poisons objects - when not in use. Also tracks the last alloc / free. - For more information see Documentation/vm/slub.txt. + slub_debug[=options[,slabs]] [MM, SLUB] + Enabling slub_debug allows one to determine the + culprit if slab objects become corrupted. Enabling + slub_debug can create guard zones around objects and + may poison objects when not in use. Also tracks the + last alloc / free. For more information see + Documentation/vm/slub.txt. slub_max_order= [MM, SLUB] - Determines the maximum allowed order for slabs. Setting - this too high may cause fragmentation. - For more information see Documentation/vm/slub.txt. + Determines the maximum allowed order for slabs. + A high setting may cause OOMs due to memory + fragmentation. For more information see + Documentation/vm/slub.txt. slub_min_objects= [MM, SLUB] - The minimum objects per slab. SLUB will increase the - slab order up to slub_max_order to generate a - sufficiently big slab to satisfy the number of objects. - The higher the number of objects the smaller the overhead - of tracking slabs. + The minimum number of objects per slab. SLUB will + increase the slab order up to slub_max_order to + generate a sufficiently large slab able to contain + the number of objects indicated. The higher the number + of objects the smaller the overhead of tracking slabs + and the less frequently locks need to be acquired. For more information see Documentation/vm/slub.txt. slub_min_order= [MM, SLUB] Determines the mininum page order for slabs. Must be - lower than slub_max_order + lower than slub_max_order. For more information see Documentation/vm/slub.txt. slub_nomerge [MM, SLUB] - Disable merging of slabs of similar size. May be + Disable merging of slabs with similar size. May be necessary if there is some reason to distinguish - allocs to different slabs. + allocs to different slabs. Debug options disable + merging on their own. For more information see Documentation/vm/slub.txt. smart2= [HW] @@ -1738,9 +1725,6 @@ and is between 256 and 4096 characters. It is defined in the file snd-ymfpci= [HW,ALSA] - sonycd535= [HW,CD] - Format: <io>[,<irq>] - sonypi.*= [HW] Sony Programmable I/O Control Device driver See Documentation/sonypi.txt @@ -1812,6 +1796,7 @@ and is between 256 and 4096 characters. It is defined in the file Set number of hash buckets for TCP connection time Show timing data prefixed to each printk message line + [deprecated, see 'printk.time'] tipar.timeout= [HW,PPT] Set communications timeout in tenths of a second diff --git a/Documentation/m68k/kernel-options.txt b/Documentation/m68k/kernel-options.txt index 1c41db21d3c..59108cebe16 100644 --- a/Documentation/m68k/kernel-options.txt +++ b/Documentation/m68k/kernel-options.txt @@ -82,13 +82,6 @@ Valid names are: /dev/fd : -> 0x0200 (floppy disk) /dev/xda: -> 0x0c00 (first XT disk, unused in Linux/m68k) /dev/xdb: -> 0x0c40 (second XT disk, unused in Linux/m68k) - /dev/ada: -> 0x1c00 (first ACSI device) - /dev/adb: -> 0x1c10 (second ACSI device) - /dev/adc: -> 0x1c20 (third ACSI device) - /dev/add: -> 0x1c30 (forth ACSI device) - -The last four names are available only if the kernel has been compiled -with Atari and ACSI support. The name must be followed by a decimal number, that stands for the partition number. Internally, the value of the number is just diff --git a/Documentation/networking/net-modules.txt b/Documentation/networking/net-modules.txt index 0b27863f155..98c4392dd0f 100644 --- a/Documentation/networking/net-modules.txt +++ b/Documentation/networking/net-modules.txt @@ -146,12 +146,6 @@ at1700.c: irq = 0 (Probes ports: 0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300) -atari_bionet.c: - Supports full autoprobing. (m68k/Atari) - -atari_pamsnet.c: - Supports full autoprobing. (m68k/Atari) - atarilance.c: Supports full autoprobing. (m68k/Atari) diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt index 7d5b60dea55..23e6dde7eea 100644 --- a/Documentation/oops-tracing.txt +++ b/Documentation/oops-tracing.txt @@ -86,6 +86,20 @@ stuff are the values reported by the Oops - you can just cut-and-paste and do a replace of spaces to "\x" - that's what I do, as I'm too lazy to write a program to automate this all). +Alternatively, you can use the shell script in scripts/decodecode. +Its usage is: decodecode < oops.txt + +The hex bytes that follow "Code:" may (in some architectures) have a series +of bytes that precede the current instruction pointer as well as bytes at and +following the current instruction pointer. In some cases, one instruction +byte or word is surrounded by <> or (), as in "<86>" or "(f00d)". These +<> or () markings indicate the current instruction pointer. Example from +i386, split into multiple lines for readability: + +Code: f9 0f 8d f9 00 00 00 8d 42 0c e8 dd 26 11 c7 a1 60 ea 2b f9 8b 50 08 a1 +64 ea 2b f9 8d 34 82 8b 1e 85 db 74 6d 8b 15 60 ea 2b f9 <8b> 43 04 39 42 54 +7e 04 40 89 42 54 8b 43 04 3b 05 00 f6 52 c0 + Finally, if you want to see where the code comes from, you can do cd /usr/src/linux diff --git a/Documentation/sound/oss/AD1816 b/Documentation/sound/oss/AD1816 deleted file mode 100644 index 14bd8f25d52..00000000000 --- a/Documentation/sound/oss/AD1816 +++ /dev/null @@ -1,84 +0,0 @@ -Documentation for the AD1816(A) sound driver -============================================ - -Installation: -------------- - -To get your AD1816(A) based sound card work, you'll have to enable support for -experimental code ("Prompt for development and/or incomplete code/drivers") -and isapnp ("Plug and Play support", "ISA Plug and Play support"). Enable -"Sound card support", "OSS modules support" and "Support for AD1816(A) based -cards (EXPERIMENTAL)" in the sound configuration menu, too. Now build, install -and reboot the new kernel as usual. - -Features: ---------- - -List of features supported by this driver: -- full-duplex support -- supported audio formats: unsigned 8bit, signed 16bit little endian, - signed 16bit big endian, µ-law, A-law -- supported channels: mono and stereo -- supported recording sources: Master, CD, Line, Line1, Line2, Mic -- supports phat 3d stereo circuit (Line 3) - - -Supported cards: ----------------- - -The following cards are known to work with this driver: -- Terratec Base 1 -- Terratec Base 64 -- HP Kayak -- Acer FX-3D -- SY-1816 -- Highscreen Sound-Boostar 32 Wave 3D -- Highscreen Sound-Boostar 16 -- AVM Apex Pro card -- (Aztech SC-16 3D) -- (Newcom SC-16 3D) -- (Terratec EWS64S) - -Cards listed in brackets are not supported reliable. If you have such a card -you should add the extra parameter: - options=1 -when loading the ad1816 module via modprobe. - - -Troubleshooting: ----------------- - -First of all you should check, if the driver has been loaded -properly. - -If loading of the driver succeeds, but playback/capture fails, check -if you used the correct values for irq, dma and dma2 when loading the module. -If one of them is wrong you usually get the following error message: - -Nov 6 17:06:13 tek01 kernel: Sound: DMA (output) timed out - IRQ/DRQ config error? - -If playback/capture is too fast or to slow, you should have a look at -the clock chip of your sound card. The AD1816 was designed for a 33MHz -oscillator, however most sound card manufacturer use slightly -different oscillators as they are cheaper than 33MHz oscillators. If -you have such a card you have to adjust the ad1816_clockfreq parameter -above. For example: For a card using a 32.875MHz oscillator use -ad1816_clockfreq=32875 instead of ad1816_clockfreq=33000. - - -Updates, bugfixes and bugreports: --------------------------------- - -As the driver is still experimental and under development, you should -watch out for updates. Updates of the driver are available on the -Internet from one of my home pages: - http://www.student.informatik.tu-darmstadt.de/~tek/projects/linux.html -or: - http://www.tu-darmstadt.de/~tek01/projects/linux.html - -Bugreports, bugfixes and related questions should be sent via E-Mail to: - tek@rbg.informatik.tu-darmstadt.de - -Thorsten Knabe <tek@rbg.informatik.tu-darmstadt.de> -Christoph Hellwig <hch@infradead.org> - Last modified: 2000/09/20 diff --git a/Documentation/sound/oss/NM256 b/Documentation/sound/oss/NM256 deleted file mode 100644 index b503217488b..00000000000 --- a/Documentation/sound/oss/NM256 +++ /dev/null @@ -1,280 +0,0 @@ -======================================================= -Documentation for the NeoMagic 256AV/256ZX sound driver -======================================================= - -You're looking at version 1.1 of the driver. (Woohoo!) It has been -successfully tested against the following laptop models: - - Sony Z505S/Z505SX/Z505DX/Z505RX - Sony F150, F160, F180, F250, F270, F280, PCG-F26 - Dell Latitude CPi, CPt (various submodels) - -There are a few caveats, which is why you should read the entirety of -this document first. - -This driver was developed without any support or assistance from -NeoMagic. There is no warranty, expressed, implied, or otherwise. It -is free software in the public domain; feel free to use it, sell it, -give it to your best friends, even claim that you wrote it (but why?!) -but don't go whining to me, NeoMagic, Sony, Dell, or anyone else -when it blows up your computer. - -Version 1.1 contains a change to try and detect non-AC97 versions of -the hardware, and not install itself appropriately. It should also -reinitialize the hardware on an APM resume event, assuming that APM -was configured into your kernel. - -============ -Installation -============ - -Enable the sound drivers, the OSS sound drivers, and then the NM256 -driver. The NM256 driver *must* be configured as a module (it won't -give you any other choice). - -Next, do the usual "make modules" and "make modules_install". -Finally, insmod the soundcore, sound and nm256 modules. - -When the nm256 driver module is loaded, you should see a couple of -confirmation messages in the kernel logfile indicating that it found -the device (the device does *not* use any I/O ports or DMA channels). -Now try playing a wav file, futz with the CD-ROM if you have one, etc. - -The NM256 is entirely a PCI-based device, and all the necessary -information is automatically obtained from the card. It can only be -configured as a module in a vain attempt to prevent people from -hurting themselves. It works correctly if it shares an IRQ with -another device (it normally shares IRQ 9 with the builtin eepro100 -ethernet on the Sony Z505 laptops). - -It does not run the card in any sort of compatibility mode. It will -not work on laptops that have the SB16-compatible, AD1848-compatible -or CS4232-compatible codec/mixer; you will want to use the appropriate -compatible OSS driver with these chipsets. I cannot provide any -assistance with machines using the SB16, AD1848 or CS4232 compatible -versions. (The driver now attempts to detect the mixer version, and -will refuse to load if it believes the hardware is not -AC97-compatible.) - -The sound support is very basic, but it does include simultaneous -playback and record capability. The mixer support is also quite -simple, although this is in keeping with the rather limited -functionality of the chipset. - -There is no hardware synthesizer available, as the Losedows OPL-3 and -MIDI support is done via hardware emulation. - -Only three recording devices are available on the Sony: the -microphone, the CD-ROM input, and the volume device (which corresponds -to the stereo output). (Other devices may be available on other -models of laptops.) The Z505 series does not have a builtin CD-ROM, -so of course the CD-ROM input doesn't work. It does work on laptops -with a builtin CD-ROM drive. - -The mixer device does not appear to have any tone controls, at least -on the Z505 series. The mixer module checks for tone controls in the -AC97 mixer, and will enable them if they are available. - -============== -Known problems -============== - - * There are known problems with PCMCIA cards and the eepro100 ethernet - driver on the Z505S/Z505SX/Z505DX. Keep reading. - - * There are also potential problems with using a virtual X display, and - also problems loading the module after the X server has been started. - Keep reading. - - * The volume control isn't anywhere near linear. Sorry. This will be - fixed eventually, when I get sufficiently annoyed with it. (I doubt - it will ever be fixed now, since I've never gotten sufficiently - annoyed with it and nobody else seems to care.) - - * There are reports that the CD-ROM volume is very low. Since I do not - have a CD-ROM equipped laptop, I cannot test this (it's kinda hard to - do remotely). - - * Only 8 fixed-rate speeds are supported. This is mainly a chipset - limitation. It may be possible to support other speeds in the future. - - * There is no support for the telephone mixer/codec. There is support - for a phonein/phoneout device in the mixer driver; whether or not - it does anything is anyone's guess. (Reports on this would be - appreciated. You'll have to figure out how to get the phone to - go off-hook before it'll work, tho.) - - * This driver was not written with any cooperation or support from - NeoMagic. If you have any questions about this, see their website - for their official stance on supporting open source drivers. - -============ -Video memory -============ - -The NeoMagic sound engine uses a portion of the display memory to hold -the sound buffer. (Crazy, eh?) The NeoMagic video BIOS sets up a -special pointer at the top of video RAM to indicate where the top of -the audio buffer should be placed. - -At the present time XFree86 is apparently not aware of this. It will -thus write over either the pointer or the sound buffer with abandon. -(Accelerated-X seems to do a better job here.) - -This implies a few things: - - * Sometimes the NM256 driver has to guess at where the buffer - should be placed, especially if the module is loaded after the - X server is started. It's usually correct, but it will consistently - fail on the Sony F250. - - * Virtual screens greater than 1024x768x16 under XFree86 are - problematic on laptops with only 2.5MB of screen RAM. This - includes all of the 256AV-equipped laptops. (Virtual displays - may or may not work on the 256ZX, which has at least 4MB of - video RAM.) - -If you start having problems with random noise being output either -constantly (this is the usual symptom on the F250), or when windows -are moved around (this is the usual symptom when using a virtual -screen), the best fix is to - - * Don't use a virtual frame buffer. - * Make sure you load the NM256 module before the X server is - started. - -On the F250, it is possible to force the driver to load properly even -after the XFree86 server is started by doing: - - insmod nm256 buffertop=0x25a800 - -This forces the audio buffers to the correct offset in screen RAM. - -One user has reported a similar problem on the Sony F270, although -others apparently aren't seeing any problems. His suggested command -is - - insmod nm256 buffertop=0x272800 - -================= -Official WWW site -================= - -The official site for the NM256 driver is: - - http://www.uglx.org/sony.html - -You should always be able to get the latest version of the driver there, -and the driver will be supported for the foreseeable future. - -============== -Z505RX and IDE -============== - -There appears to be a problem with the IDE chipset on the Z505RX; one -of the symptoms is that sound playback periodically hangs (when the -disk is accessed). The user reporting the problem also reported that -enabling all of the IDE chipset workarounds in the kernel solved the -problem, tho obviously only one of them should be needed--if someone -can give me more details I would appreciate it. - -============================== -Z505S/Z505SX on-board Ethernet -============================== - -If you're using the on-board Ethernet Pro/100 ethernet support on the Z505 -series, I strongly encourage you to download the latest eepro100 driver from -Donald Becker's site: - - ftp://cesdis.gsfc.nasa.gov/pub/linux/drivers/test/eepro100.c - -There was a reported problem on the Z505SX that if the ethernet -interface is disabled and reenabled while the sound driver is loaded, -the machine would lock up. I have included a workaround that is -working satisfactorily. However, you may occasionally see a message -about "Releasing interrupts, over 1000 bad interrupts" which indicates -that the workaround is doing its job. - -================================== -PCMCIA and the Z505S/Z505SX/Z505DX -================================== - -There is also a known problem with the Sony Z505S and Z505SX hanging -if a PCMCIA card is inserted while the ethernet driver is loaded, or -in some cases if the laptop is suspended. This is caused by tons of -spurious IRQ 9s, probably generated from the PCMCIA or ACPI bridges. - -There is currently no fix for the problem that works in every case. -The only known workarounds are to disable the ethernet interface -before inserting or removing a PCMCIA card, or with some cards -disabling the PCMCIA card before ejecting it will also help the -problem with the laptop hanging when the card is ejected. - -One user has reported that setting the tcic's cs_irq to some value -other than 9 (like 11) fixed the problem. This doesn't work on my -Z505S, however--changing the value causes the cardmgr to stop seeing -card insertions and removals, cards don't seem to work correctly, and -I still get hangs if a card is inserted when the kernel is booted. - -Using the latest ethernet driver and pcmcia package allows me to -insert an Adaptec 1480A SlimScsi card without the laptop hanging, -although I still have to shut down the card before ejecting or -powering down the laptop. However, similar experiments with a DE-660 -ethernet card still result in hangs when the card is inserted. I am -beginning to think that the interrupts are CardBus-related, since the -Adaptec card is a CardBus card, and the DE-660 is not; however, I -don't have any other CardBus cards to test with. - -====== -Thanks -====== - -First, I want to thank everyone (except NeoMagic of course) for their -generous support and encouragement. I'd like to list everyone's name -here that replied during the development phase, but the list is -amazingly long. - -I will be rather unfair and single out a few people, however: - - Justin Maurer, for being the first random net.person to try it, - and for letting me login to his Z505SX to get it working there - - Edi Weitz for trying out several different versions, and giving - me a lot of useful feedback - - Greg Rumple for letting me login remotely to get the driver - functional on the 256ZX, for his assistance on tracking - down all sorts of random stuff, and for trying out Accel-X - - Zach Brown, for the initial AC97 mixer interface design - - Jeff Garzik, for various helpful suggestions on the AC97 - interface - - "Mr. Bumpy" for feedback on the Z505RX - - Bill Nottingham, for generous assistance in getting the mixer ID - code working - -================= -Previous versions -================= - -Versions prior to 0.3 (aka `noname') had problems with weird artifacts -in the output and failed to set the recording rate properly. These -problems have long since been fixed. - -Versions prior to 0.5 had problems with clicks in the output when -anything other than 16-bit stereo sound was being played, and also had -periodic clicks when recording. - -Version 0.7 first incorporated support for the NM256ZX chipset, which -is found on some Dell Latitude laptops (the CPt, and apparently -some CPi models as well). It also included the generic AC97 -mixer module. - -Version 0.75 renamed all the functions and files with slightly more -generic names. - -Note that previous versions of this document claimed that recording was -8-bit only; it actually has been working for 16-bits all along. diff --git a/Documentation/sound/oss/OPL3-SA2 b/Documentation/sound/oss/OPL3-SA2 deleted file mode 100644 index d8b6d2bbada..00000000000 --- a/Documentation/sound/oss/OPL3-SA2 +++ /dev/null @@ -1,210 +0,0 @@ -Documentation for the OPL3-SA2, SA3, and SAx driver (opl3sa2.o) ---------------------------------------------------------------- - -Scott Murray, scott@spiteful.org -January 7, 2001 - -NOTE: All trade-marked terms mentioned below are properties of their - respective owners. - - -Supported Devices ------------------ - -This driver is for PnP soundcards based on the following Yamaha audio -controller chipsets: - -YMF711 aka OPL3-SA2 -YMF715 and YMF719 aka OPL3-SA3 - -Up until recently (December 2000), I'd thought the 719 to be a -different chipset, the OPL3-SAx. After an email exhange with -Yamaha, however, it turns out that the 719 is just a re-badged -715, and the chipsets are identical. The chipset detection code -has been updated to reflect this. - -Anyways, all of these chipsets implement the following devices: - -OPL3 FM synthesizer -Soundblaster Pro -Microsoft/Windows Sound System -MPU401 MIDI interface - -Note that this driver uses the MSS device, and to my knowledge these -chipsets enforce an either/or situation with the Soundblaster Pro -device and the MSS device. Since the MSS device has better -capabilities, I have implemented the driver to use it. - - -Mixer Channels --------------- - -Older versions of this driver (pre-December 2000) had two mixers, -an OPL3-SA2 or SA3 mixer and a MSS mixer. The OPL3-SA[23] mixer -device contained a superset of mixer channels consisting of its own -channels and all of the MSS mixer channels. To simplify the driver -considerably, and to partition functionality better, the OPL3-SA[23] -mixer device now contains has its own specific mixer channels. They -are: - -Volume - Hardware master volume control -Bass - SA3 only, now supports left and right channels -Treble - SA3 only, now supports left and right channels -Microphone - Hardware microphone input volume control -Digital1 - Yamaha 3D enhancement "Wide" mixer - -All other mixer channels (e.g. "PCM", "CD", etc.) now have to be -controlled via the "MS Sound System (CS4231)" mixer. To facilitate -this, the mixer device creation order has been switched so that -the MSS mixer is created first. This allows accessing the majority -of the useful mixer channels even via single mixer-aware tools -such as "aumix". - - -Plug 'n Play ------------- - -In previous kernels (2.2.x), some configuration was required to -get the driver to talk to the card. Being the new millennium and -all, the 2.4.x kernels now support auto-configuration if ISA PnP -support is configured in. Theoretically, the driver even supports -having more than one card in this case. - -With the addition of PnP support to the driver, two new parameters -have been added to control it: - -isapnp - set to 0 to disable ISA PnP card detection - -multiple - set to 0 to disable multiple PnP card detection - - -Optional Parameters -------------------- - -Recent (December 2000) additions to the driver (based on a patch -provided by Peter Englmaier) are two new parameters: - -ymode - Set Yamaha 3D enhancement mode: - 0 = Desktop/Normal 5-12 cm speakers - 1 = Notebook PC (1) 3 cm speakers - 2 = Notebook PC (2) 1.5 cm speakers - 3 = Hi-Fi 16-38 cm speakers - -loopback - Set A/D input source. Useful for echo cancellation: - 0 = Mic Right channel (default) - 1 = Mono output loopback - -The ymode parameter has been tested and does work. The loopback -parameter, however, is untested. Any feedback on its usefulness -would be appreciated. - - -Manual Configuration --------------------- - -If for some reason you decide not to compile ISA PnP support into -your kernel, or disabled the driver's usage of it by setting the -isapnp parameter as discussed above, then you will need to do some -manual configuration. There are two ways of doing this. The most -common is to use the isapnptools package to initialize the card, and -use the kernel module form of the sound subsystem and sound drivers. -Alternatively, some BIOS's allow manual configuration of installed -PnP devices in a BIOS menu, which should allow using the non-modular -sound drivers, i.e. built into the kernel. - -I personally use isapnp and modules, and do not have access to a PnP -BIOS machine to test. If you have such a beast, configuring the -driver to be built into the kernel should just work (thanks to work -done by David Luyer <luyer@ucs.uwa.edu.au>). You will still need -to specify settings, which can be done by adding: - -opl3sa2=<io>,<irq>,<dma>,<dma2>,<mssio>,<mpuio> - -to the kernel command line. For example: - -opl3sa2=0x370,5,0,1,0x530,0x330 - -If you are instead using the isapnp tools (as most people have been -before Linux 2.4.x), follow the directions in their documentation to -produce a configuration file. Here is the relevant excerpt I used to -use for my SA3 card from my isapnp.conf: - -(CONFIGURE YMH0800/-1 (LD 0 - -# NOTE: IO 0 is for the unused SoundBlaster part of the chipset. -(IO 0 (BASE 0x0220)) -(IO 1 (BASE 0x0530)) -(IO 2 (BASE 0x0388)) -(IO 3 (BASE 0x0330)) -(IO 4 (BASE 0x0370)) -(INT 0 (IRQ 5 (MODE +E))) -(DMA 0 (CHANNEL 0)) -(DMA 1 (CHANNEL 1)) - -Here, note that: - -Port Acceptable Range Purpose ----- ---------------- ------- -IO 0 0x0220 - 0x0280 SB base address, unused. -IO 1 0x0530 - 0x0F48 MSS base address -IO 2 0x0388 - 0x03F8 OPL3 base address -IO 3 0x0300 - 0x0334 MPU base address -IO 4 0x0100 - 0x0FFE card's own base address for its control I/O ports - -The IRQ and DMA values can be any that are considered acceptable for a -MSS. Assuming you've got isapnp all happy, then you should be able to -do something like the following (which matches up with the isapnp -configuration above): - -modprobe mpu401 -modprobe ad1848 -modprobe opl3sa2 io=0x370 mss_io=0x530 mpu_io=0x330 irq=5 dma=0 dma2=1 -modprobe opl3 io=0x388 - -See the section "Automatic Module Loading" below for how to set up -/etc/modprobe.conf to automate this. - -An important thing to remember that the opl3sa2 module's io argument is -for it's own control port, which handles the card's master mixer for -volume (on all cards), and bass and treble (on SA3 cards). - - -Troubleshooting ---------------- - -If all goes well and you see no error messages, you should be able to -start using the sound capabilities of your system. If you get an -error message while trying to insert the opl3sa2 module, then make -sure that the values of the various arguments match what you specified -in your isapnp configuration file, and that there is no conflict with -another device for an I/O port or interrupt. Checking the contents of -/proc/ioports and /proc/interrupts can be useful to see if you're -butting heads with another device. - -If you still cannot get the module to load, look at the contents of -your system log file, usually /var/log/messages. If you see the -message "opl3sa2: Unknown Yamaha audio controller version", then you -have a different chipset version than I've encountered so far. Look -for all messages in the log file that start with "opl3sa2: " and see -if they provide any clues. If you do not see the chipset version -message, and none of the other messages present in the system log are -helpful, email me some details and I'll try my best to help. - - -Automatic Module Loading ------------------------- - -Lastly, if you're using modules and want to set up automatic module -loading with kmod, the kernel module loader, here is the section I -currently use in my modprobe.conf file: - -# Sound -alias sound-slot-0 opl3sa2 -options opl3sa2 io=0x370 mss_io=0x530 mpu_io=0x330 irq=7 dma=0 dma2=3 -options opl3 io=0x388 - -That's all it currently takes to get an OPL3-SA3 card working on my -system. Once again, if you have any other problems, email me at the -address listed above. - -Scott diff --git a/Documentation/sound/oss/VIA-chipset b/Documentation/sound/oss/VIA-chipset deleted file mode 100644 index 37865234e54..00000000000 --- a/Documentation/sound/oss/VIA-chipset +++ /dev/null @@ -1,43 +0,0 @@ -Running sound cards on VIA chipsets - -o There are problems with VIA chipsets and sound cards that appear to - lock the hardware solidly. Test programs under DOS have verified the - problem exists on at least some (but apparently not all) VIA boards - -o VIA have so far failed to bother to answer support mail on the subject - so if you are a VIA engineer feeling aggrieved as you read this - document go chase your own people. If there is a workaround please - let us know so we can implement it. - - -Certain patterns of ISA DMA access used for most PC sound cards cause the -VIA chipsets to lock up. From the collected reports this appears to cover a -wide range of boards. Some also lock up with sound cards under Win* as well. - -Linux implements a workaround providing your chipset is PCI and you compiled -with PCI Quirks enabled. If so you will see a message - "Activating ISA DMA bug workarounds" - -during booting. If you have a VIA PCI chipset that hangs when you use the -sound and is not generating this message even with PCI quirks enabled -please report the information to the linux-kernel list (see REPORTING-BUGS). - -If you are one of the tiny number of unfortunates with a 486 ISA/VLB VIA -chipset board you need to do the following to build a special kernel for -your board - - edit linux/include/asm-i386/dma.h - -change - -#define isa_dma_bridge_buggy (0) - -to - -#define isa_dma_bridge_buggy (1) - -and rebuild a kernel without PCI quirk support. - - -Other than this particular glitch the VIA [M]VP* chipsets appear to work -perfectly with Linux. diff --git a/Documentation/sound/oss/cs46xx b/Documentation/sound/oss/cs46xx deleted file mode 100644 index b5443270986..00000000000 --- a/Documentation/sound/oss/cs46xx +++ /dev/null @@ -1,138 +0,0 @@ - -Documentation for the Cirrus Logic/Crystal SoundFusion cs46xx/cs4280 audio -controller chips (2001/05/11) - -The cs46xx audio driver supports the DSP line of Cirrus controllers. -Specifically, the cs4610, cs4612, cs4614, cs4622, cs4624, cs4630 and the cs4280 -products. This driver uses the generic ac97_codec driver for AC97 codec -support. - - -Features: - -Full Duplex Playback/Capture supported from 8k-48k. -16Bit Signed LE & 8Bit Unsigned, with Mono or Stereo supported. - -APM/PM - 2.2.x PM is enabled and functional. APM can also -be enabled for 2.4.x by modifying the CS46XX_ACPI_SUPPORT macro -definition. - -DMA playback buffer size is configurable from 16k (defaultorder=2) up to 2Meg -(defaultorder=11). DMA capture buffer size is fixed at a single 4k page as -two 2k fragments. - -MMAP seems to work well with QuakeIII, and test XMMS plugin. - -Myth2 works, but the polling logic is not fully correct, but is functional. - -The 2.4.4-ac6 gameport code in the cs461x joystick driver has been tested -with a Microsoft Sidewinder joystick (cs461x.o and sidewinder.o). This -audio driver must be loaded prior to the joystick driver to enable the -DSP task image supporting the joystick device. - - -Limitations: - -SPDIF is currently not supported. - -Primary codec support only. No secondary codec support is implemented. - - - -NOTES: - -Hercules Game Theatre XP - the EGPIO2 pin controls the external Amp, -and has been tested. -Module parameter hercules_egpio_disable set to 1, will force a 0 to EGPIODR -to disable the external amplifier. - -VTB Santa Cruz - the GPIO7/GPIO8 on the Secondary Codec control -the external amplifier for the "back" speakers, since we do not -support the secondary codec then this external amp is not -turned on. The primary codec external amplifier is supported but -note that the AC97 EAPD bit is inverted logic (amp_voyetra()). - -DMA buffer size - there are issues with many of the Linux applications -concerning the optimal buffer size. Several applications request a -certain fragment size and number and then do not verify that the driver -has the ability to support the requested configuration. -SNDCTL_DSP_SETFRAGMENT ioctl is used to request a fragment size and -number of fragments. Some applications exit if an error is returned -on this particular ioctl. Therefore, in alignment with the other OSS audio -drivers, no error is returned when a SETFRAGs IOCTL is received, but the -values passed from the app are not used in any buffer calculation -(ossfragshift/ossmaxfrags are not used). -Use the "defaultorder=N" module parameter to change the buffer size if -you have an application that requires a specific number of fragments -or a specific buffer size (see below). - -Debug Interface ---------------- -There is an ioctl debug interface to allow runtime modification of the -debug print levels. This debug interface code can be disabled from the -compilation process with commenting the following define: -#define CSDEBUG_INTERFACE 1 -There is also a debug print methodolgy to select printf statements from -different areas of the driver. A debug print level is also used to allow -additional printfs to be active. Comment out the following line in the -driver to disable compilation of the CS_DBGOUT print statements: -#define CSDEBUG 1 - -Please see the definitions for cs_debuglevel and cs_debugmask for additional -information on the debug levels and sections. - -There is also a csdbg executable to allow runtime manipulation of these -parameters. for a copy email: twoller@crystal.cirrus.com - - - -MODULE_PARMS definitions ------------------------- -module_param(defaultorder, ulong, 0); -defaultorder=N -where N is a value from 1 to 12 -The buffer order determines the size of the dma buffer for the driver. -under Linux, a smaller buffer allows more responsiveness from many of the -applications (e.g. games). A larger buffer allows some of the apps (esound) -to not underrun the dma buffer as easily. As default, use 32k (order=3) -rather than 64k as some of the games work more responsively. -(2^N) * PAGE_SIZE = allocated buffer size - -module_param(cs_debuglevel, ulong, 0644); -module_param(cs_debugmask, ulong, 0644); -cs_debuglevel=N -cs_debugmask=0xMMMMMMMM -where N is a value from 0 (no debug printfs), to 9 (maximum) -0xMMMMMMMM is a debug mask corresponding to the CS_xxx bits (see driver source). - -module_param(hercules_egpio_disable, ulong, 0); -hercules_egpio_disable=N -where N is a 0 (enable egpio), or a 1 (disable egpio support) - -module_param(initdelay, ulong, 0); -initdelay=N -This value is used to determine the millescond delay during the initialization -code prior to powering up the PLL. On laptops this value can be used to -assist with errors on resume, mostly with IBM laptops. Basically, if the -system is booted under battery power then the mdelay()/udelay() functions fail to -properly delay the required time. Also, if the system is booted under AC power -and then the power removed, the mdelay()/udelay() functions will not delay properly. - -module_param(powerdown, ulong, 0); -powerdown=N -where N is 0 (disable any powerdown of the internal blocks) or 1 (enable powerdown) - - -module_param(external_amp, bool, 0); -external_amp=1 -if N is set to 1, then force enabling the EAPD support in the primary AC97 codec. -override the detection logic and force the external amp bit in the AC97 0x26 register -to be reset (0). EAPD should be 0 for powerup, and 1 for powerdown. The VTB Santa Cruz -card has inverted logic, so there is a special function for these cards. - -module_param(thinkpad, bool, 0); -thinkpad=1 -if N is set to 1, then force enabling the clkrun functionality. -Currently, when the part is being used, then clkrun is disabled for the entire system, -but re-enabled when the driver is released or there is no outstanding open count. - diff --git a/Documentation/spinlocks.txt b/Documentation/spinlocks.txt index a661d684768..471e7538977 100644 --- a/Documentation/spinlocks.txt +++ b/Documentation/spinlocks.txt @@ -1,7 +1,12 @@ -UPDATE March 21 2005 Amit Gud <gud@eth.net> +SPIN_LOCK_UNLOCKED and RW_LOCK_UNLOCKED defeat lockdep state tracking and +are hence deprecated. -Macros SPIN_LOCK_UNLOCKED and RW_LOCK_UNLOCKED are deprecated and will be -removed soon. So for any new code dynamic initialization should be used: +Please use DEFINE_SPINLOCK()/DEFINE_RWLOCK() or +__SPIN_LOCK_UNLOCKED()/__RW_LOCK_UNLOCKED() as appropriate for static +initialization. + +Dynamic initialization, when necessary, may be performed as +demonstrated below. spinlock_t xxx_lock; rwlock_t xxx_rw_lock; @@ -15,12 +20,9 @@ removed soon. So for any new code dynamic initialization should be used: module_init(xxx_init); -Reasons for deprecation - - it hurts automatic lock validators - - it becomes intrusive for the realtime preemption patches - -Following discussion is still valid, however, with the dynamic initialization -of spinlocks instead of static. +The following discussion is still valid, however, with the dynamic +initialization of spinlocks or with DEFINE_SPINLOCK, etc., used +instead of SPIN_LOCK_UNLOCKED. ----------------------- diff --git a/Documentation/sysctl/ctl_unnumbered.txt b/Documentation/sysctl/ctl_unnumbered.txt new file mode 100644 index 00000000000..23003a8ea3e --- /dev/null +++ b/Documentation/sysctl/ctl_unnumbered.txt @@ -0,0 +1,22 @@ + +Except for a few extremely rare exceptions user space applications do not use +the binary sysctl interface. Instead everyone uses /proc/sys/... with +readable ascii names. + +Recently the kernel has started supporting setting the binary sysctl value to +CTL_UNNUMBERED so we no longer need to assign a binary sysctl path to allow +sysctls to show up in /proc/sys. + +Assigning binary sysctl numbers is an endless source of conflicts in sysctl.h, +breaking of the user space ABI (because of those conflicts), and maintenance +problems. A complete pass through all of the sysctl users revealed multiple +instances where the sysctl binary interface was broken and had gone undetected +for years. + +So please do not add new binary sysctl numbers. They are unneeded and +problematic. + +If you really need a new binary sysctl number please first merge your sysctl +into the kernel and then as a separate patch allocate a binary sysctl number. + +(ebiederm@xmission.com, June 2007) diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt index 8cfca173d4b..df3ff2095f9 100644 --- a/Documentation/sysctl/vm.txt +++ b/Documentation/sysctl/vm.txt @@ -32,6 +32,7 @@ Currently, these files are in /proc/sys/vm: - min_slab_ratio - panic_on_oom - mmap_min_address +- numa_zonelist_order ============================================================== @@ -231,3 +232,47 @@ security module. Setting this value to something like 64k will allow the vast majority of applications to work correctly and provide defense in depth against future potential kernel bugs. +============================================================== + +numa_zonelist_order + +This sysctl is only for NUMA. +'where the memory is allocated from' is controlled by zonelists. +(This documentation ignores ZONE_HIGHMEM/ZONE_DMA32 for simple explanation. + you may be able to read ZONE_DMA as ZONE_DMA32...) + +In non-NUMA case, a zonelist for GFP_KERNEL is ordered as following. +ZONE_NORMAL -> ZONE_DMA +This means that a memory allocation request for GFP_KERNEL will +get memory from ZONE_DMA only when ZONE_NORMAL is not available. + +In NUMA case, you can think of following 2 types of order. +Assume 2 node NUMA and below is zonelist of Node(0)'s GFP_KERNEL + +(A) Node(0) ZONE_NORMAL -> Node(0) ZONE_DMA -> Node(1) ZONE_NORMAL +(B) Node(0) ZONE_NORMAL -> Node(1) ZONE_NORMAL -> Node(0) ZONE_DMA. + +Type(A) offers the best locality for processes on Node(0), but ZONE_DMA +will be used before ZONE_NORMAL exhaustion. This increases possibility of +out-of-memory(OOM) of ZONE_DMA because ZONE_DMA is tend to be small. + +Type(B) cannot offer the best locality but is more robust against OOM of +the DMA zone. + +Type(A) is called as "Node" order. Type (B) is "Zone" order. + +"Node order" orders the zonelists by node, then by zone within each node. +Specify "[Nn]ode" for zone order + +"Zone Order" orders the zonelists by zone type, then by node within each +zone. Specify "[Zz]one"for zode order. + +Specify "[Dd]efault" to request automatic configuration. Autoconfiguration +will select "node" order in following case. +(1) if the DMA zone does not exist or +(2) if the DMA zone comprises greater than 50% of the available memory or +(3) if any node's DMA zone comprises greater than 60% of its local memory and + the amount of local memory is big enough. + +Otherwise, "zone" order will be selected. Default order is recommended unless +this is causing problems for your system/application. diff --git a/Documentation/vm/hugetlbpage.txt b/Documentation/vm/hugetlbpage.txt index 687104bfd09..51ccc48aa76 100644 --- a/Documentation/vm/hugetlbpage.txt +++ b/Documentation/vm/hugetlbpage.txt @@ -77,8 +77,9 @@ If the user applications are going to request hugepages using mmap system call, then it is required that system administrator mount a file system of type hugetlbfs: - mount none /mnt/huge -t hugetlbfs <uid=value> <gid=value> <mode=value> - <size=value> <nr_inodes=value> + mount -t hugetlbfs \ + -o uid=<value>,gid=<value>,mode=<value>,size=<value>,nr_inodes=<value> \ + none /mnt/huge This command mounts a (pseudo) filesystem of type hugetlbfs on the directory /mnt/huge. Any files created on /mnt/huge uses hugepages. The uid and gid @@ -88,11 +89,10 @@ mode of root of file system to value & 0777. This value is given in octal. By default the value 0755 is picked. The size option sets the maximum value of memory (huge pages) allowed for that filesystem (/mnt/huge). The size is rounded down to HPAGE_SIZE. The option nr_inodes sets the maximum number of -inodes that /mnt/huge can use. If the size or nr_inodes options are not +inodes that /mnt/huge can use. If the size or nr_inodes option is not provided on command line then no limits are set. For size and nr_inodes options, you can use [G|g]/[M|m]/[K|k] to represent giga/mega/kilo. For -example, size=2K has the same meaning as size=2048. An example is given at -the end of this document. +example, size=2K has the same meaning as size=2048. read and write system calls are not supported on files that reside on hugetlb file systems. diff --git a/Documentation/vm/slub.txt b/Documentation/vm/slub.txt index 1523320abd8..df812b03b65 100644 --- a/Documentation/vm/slub.txt +++ b/Documentation/vm/slub.txt @@ -41,6 +41,8 @@ Possible debug options are P Poisoning (object and padding) U User tracking (free and alloc) T Trace (please only use on single slabs) + - Switch all debugging off (useful if the kernel is + configured with CONFIG_SLUB_DEBUG_ON) F.e. in order to boot just with sanity checks and red zoning one would specify: |