diff options
Diffstat (limited to 'Documentation/ide.txt')
-rw-r--r-- | Documentation/ide.txt | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/Documentation/ide.txt b/Documentation/ide.txt index 94e2e3b9e77f..bcd7cd1278ef 100644 --- a/Documentation/ide.txt +++ b/Documentation/ide.txt | |||
@@ -258,8 +258,6 @@ Summary of ide driver parameters for kernel command line | |||
258 | As for VLB, it is safest to not specify it. | 258 | As for VLB, it is safest to not specify it. |
259 | Bigger values are safer than smaller ones. | 259 | Bigger values are safer than smaller ones. |
260 | 260 | ||
261 | "idex=noprobe" : do not attempt to access/use this interface | ||
262 | |||
263 | "idex=base" : probe for an interface at the addr specified, | 261 | "idex=base" : probe for an interface at the addr specified, |
264 | where "base" is usually 0x1f0 or 0x170 | 262 | where "base" is usually 0x1f0 or 0x170 |
265 | and "ctl" is assumed to be "base"+0x206 | 263 | and "ctl" is assumed to be "base"+0x206 |
@@ -309,53 +307,6 @@ are detected automatically). | |||
309 | 307 | ||
310 | ================================================================================ | 308 | ================================================================================ |
311 | 309 | ||
312 | IDE ATAPI streaming tape driver | ||
313 | ------------------------------- | ||
314 | |||
315 | This driver is a part of the Linux ide driver and works in co-operation | ||
316 | with linux/drivers/block/ide.c. | ||
317 | |||
318 | The driver, in co-operation with ide.c, basically traverses the | ||
319 | request-list for the block device interface. The character device | ||
320 | interface, on the other hand, creates new requests, adds them | ||
321 | to the request-list of the block device, and waits for their completion. | ||
322 | |||
323 | Pipelined operation mode is now supported on both reads and writes. | ||
324 | |||
325 | The block device major and minor numbers are determined from the | ||
326 | tape's relative position in the ide interfaces, as explained in ide.c. | ||
327 | |||
328 | The character device interface consists of the following devices: | ||
329 | |||
330 | ht0 major 37, minor 0 first IDE tape, rewind on close. | ||
331 | ht1 major 37, minor 1 second IDE tape, rewind on close. | ||
332 | ... | ||
333 | nht0 major 37, minor 128 first IDE tape, no rewind on close. | ||
334 | nht1 major 37, minor 129 second IDE tape, no rewind on close. | ||
335 | ... | ||
336 | |||
337 | Run /dev/MAKEDEV to create the above entries. | ||
338 | |||
339 | The general magnetic tape commands compatible interface, as defined by | ||
340 | include/linux/mtio.h, is accessible through the character device. | ||
341 | |||
342 | General ide driver configuration options, such as the interrupt-unmask | ||
343 | flag, can be configured by issuing an ioctl to the block device interface, | ||
344 | as any other ide device. | ||
345 | |||
346 | Our own ide-tape ioctl's can be issued to either the block device or | ||
347 | the character device interface. | ||
348 | |||
349 | Maximal throughput with minimal bus load will usually be achieved in the | ||
350 | following scenario: | ||
351 | |||
352 | 1. ide-tape is operating in the pipelined operation mode. | ||
353 | 2. No buffering is performed by the user backup program. | ||
354 | |||
355 | |||
356 | |||
357 | ================================================================================ | ||
358 | |||
359 | Some Terminology | 310 | Some Terminology |
360 | ---------------- | 311 | ---------------- |
361 | IDE = Integrated Drive Electronics, meaning that each drive has a built-in | 312 | IDE = Integrated Drive Electronics, meaning that each drive has a built-in |