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Diffstat (limited to 'Documentation/cdrom/sonycd535')
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diff --git a/Documentation/cdrom/sonycd535 b/Documentation/cdrom/sonycd535 deleted file mode 100644 index b81e109970aa..000000000000 --- 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. |