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Diffstat (limited to 'drivers/char/ftape/Kconfig')
-rw-r--r-- | drivers/char/ftape/Kconfig | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/drivers/char/ftape/Kconfig b/drivers/char/ftape/Kconfig new file mode 100644 index 000000000000..7d3ecb56a1bd --- /dev/null +++ b/drivers/char/ftape/Kconfig | |||
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1 | # | ||
2 | # Ftape configuration | ||
3 | # | ||
4 | config ZFTAPE | ||
5 | tristate "Zftape, the VFS interface" | ||
6 | depends on FTAPE | ||
7 | ---help--- | ||
8 | Normally, you want to say Y or M. DON'T say N here or you | ||
9 | WON'T BE ABLE TO USE YOUR FLOPPY TAPE DRIVE. | ||
10 | |||
11 | The ftape module itself no longer contains the routines necessary | ||
12 | to interface with the kernel VFS layer (i.e. to actually write data | ||
13 | to and read data from the tape drive). Instead the file system | ||
14 | interface (i.e. the hardware independent part of the driver) has | ||
15 | been moved to a separate module. | ||
16 | |||
17 | To compile this driver as a module, choose M here: the | ||
18 | module will be called zftape. | ||
19 | |||
20 | Regardless of whether you say Y or M here, an additional runtime | ||
21 | loadable module called `zft-compressor' which contains code to | ||
22 | support user transparent on-the-fly compression based on Ross | ||
23 | William's lzrw3 algorithm will be produced. If you have enabled the | ||
24 | kernel module loader (i.e. have said Y to "Kernel module loader | ||
25 | support", above) then `zft-compressor' will be loaded | ||
26 | automatically by zftape when needed. | ||
27 | |||
28 | Despite its name, zftape does NOT use compression by default. The | ||
29 | file <file:Documentation/ftape.txt> contains a short description of | ||
30 | the most important changes in the file system interface compared to | ||
31 | previous versions of ftape. The ftape home page | ||
32 | <http://www.instmath.rwth-aachen.de/~heine/ftape/> contains | ||
33 | further information. | ||
34 | |||
35 | IMPORTANT NOTE: zftape can read archives created by previous | ||
36 | versions of ftape and provide file mark support (i.e. fast skipping | ||
37 | between tape archives) but previous version of ftape will lack file | ||
38 | mark support when reading archives produced by zftape. | ||
39 | |||
40 | config ZFT_DFLT_BLK_SZ | ||
41 | int "Default block size" | ||
42 | depends on ZFTAPE | ||
43 | default "10240" | ||
44 | ---help--- | ||
45 | If unsure leave this at its default value, i.e. 10240. Note that | ||
46 | you specify only the default block size here. The block size can be | ||
47 | changed at run time using the MTSETBLK tape operation with the | ||
48 | MTIOCTOP ioctl (i.e. with "mt -f /dev/qft0 setblk #BLKSZ" from the | ||
49 | shell command line). | ||
50 | |||
51 | The probably most striking difference between zftape and previous | ||
52 | versions of ftape is the fact that all data must be written or read | ||
53 | in multiples of a fixed block size. The block size defaults to | ||
54 | 10240 which is what GNU tar uses. The values for the block size | ||
55 | should be either 1 or multiples of 1024 up to a maximum value of | ||
56 | 63488 (i.e. 62 K). If you specify `1' then zftape's builtin | ||
57 | compression will be disabled. | ||
58 | |||
59 | Reasonable values are `10240' (GNU tar's default block size), | ||
60 | `5120' (afio's default block size), `32768' (default block size some | ||
61 | backup programs assume for SCSI tape drives) or `1' (no restriction | ||
62 | on block size, but disables builtin compression). | ||
63 | |||
64 | comment "The compressor will be built as a module only!" | ||
65 | depends on FTAPE && ZFTAPE | ||
66 | |||
67 | config ZFT_COMPRESSOR | ||
68 | tristate | ||
69 | depends on FTAPE!=n && ZFTAPE!=n | ||
70 | default m | ||
71 | |||
72 | config FT_NR_BUFFERS | ||
73 | int "Number of ftape buffers (EXPERIMENTAL)" | ||
74 | depends on FTAPE && EXPERIMENTAL | ||
75 | default "3" | ||
76 | help | ||
77 | Please leave this at `3' unless you REALLY know what you are doing. | ||
78 | It is not necessary to change this value. Values below 3 make the | ||
79 | proper use of ftape impossible, values greater than 3 are a waste of | ||
80 | memory. You can change the amount of DMA memory used by ftape at | ||
81 | runtime with "mt -f /dev/qft0 setdrvbuffer #NUMBUFFERS". Each buffer | ||
82 | wastes 32 KB of memory. Please note that this memory cannot be | ||
83 | swapped out. | ||
84 | |||
85 | config FT_PROC_FS | ||
86 | bool "Enable procfs status report (+2kb)" | ||
87 | depends on FTAPE && PROC_FS | ||
88 | ---help--- | ||
89 | Optional. Saying Y will result in creation of a directory | ||
90 | `/proc/ftape' under the /proc file system. The files can be viewed | ||
91 | with your favorite pager (i.e. use "more /proc/ftape/history" or | ||
92 | "less /proc/ftape/history" or simply "cat /proc/ftape/history"). The | ||
93 | file will contain some status information about the inserted | ||
94 | cartridge, the kernel driver, your tape drive, the floppy disk | ||
95 | controller and the error history for the most recent use of the | ||
96 | kernel driver. Saying Y will enlarge the size of the ftape driver | ||
97 | by approximately 2 KB. | ||
98 | |||
99 | WARNING: When compiling ftape as a module (i.e. saying M to "Floppy | ||
100 | tape drive") it is dangerous to use ftape's /proc file system | ||
101 | interface. Accessing `/proc/ftape' while the module is unloaded will | ||
102 | result in a kernel Oops. This cannot be fixed from inside ftape. | ||
103 | |||
104 | choice | ||
105 | prompt "Debugging output" | ||
106 | depends on FTAPE | ||
107 | default FT_NORMAL_DEBUG | ||
108 | |||
109 | config FT_NORMAL_DEBUG | ||
110 | bool "Normal" | ||
111 | ---help--- | ||
112 | This option controls the amount of debugging output the ftape driver | ||
113 | is ABLE to produce; it does not increase or diminish the debugging | ||
114 | level itself. If unsure, leave this at its default setting, | ||
115 | i.e. choose "Normal". | ||
116 | |||
117 | Ftape can print lots of debugging messages to the system console | ||
118 | resp. kernel log files. Reducing the amount of possible debugging | ||
119 | output reduces the size of the kernel module by some KB, so it might | ||
120 | be a good idea to use "None" for emergency boot floppies. | ||
121 | |||
122 | If you want to save memory then the following strategy is | ||
123 | recommended: leave this option at its default setting "Normal" until | ||
124 | you know that the driver works as expected, afterwards reconfigure | ||
125 | the kernel, this time specifying "Reduced" or "None" and recompile | ||
126 | and install the kernel as usual. Note that choosing "Excessive" | ||
127 | debugging output does not increase the amount of debugging output | ||
128 | printed to the console but only makes it possible to produce | ||
129 | "Excessive" debugging output. | ||
130 | |||
131 | Please read <file:Documentation/ftape.txt> for a short description | ||
132 | how to control the amount of debugging output. | ||
133 | |||
134 | config FT_FULL_DEBUG | ||
135 | bool "Excessive" | ||
136 | help | ||
137 | Extremely verbose output for driver debugging purposes. | ||
138 | |||
139 | config FT_NO_TRACE | ||
140 | bool "Reduced" | ||
141 | help | ||
142 | Reduced tape driver debugging output. | ||
143 | |||
144 | config FT_NO_TRACE_AT_ALL | ||
145 | bool "None" | ||
146 | help | ||
147 | Suppress all debugging output from the tape drive. | ||
148 | |||
149 | endchoice | ||
150 | |||
151 | comment "Hardware configuration" | ||
152 | depends on FTAPE | ||
153 | |||
154 | choice | ||
155 | prompt "Floppy tape controllers" | ||
156 | depends on FTAPE | ||
157 | default FT_STD_FDC | ||
158 | |||
159 | config FT_STD_FDC | ||
160 | bool "Standard" | ||
161 | ---help--- | ||
162 | Only change this setting if you have a special controller. If you | ||
163 | didn't plug any add-on card into your computer system but just | ||
164 | plugged the floppy tape cable into the already existing floppy drive | ||
165 | controller then you don't want to change the default setting, | ||
166 | i.e. choose "Standard". | ||
167 | |||
168 | Choose "MACH-2" if you have a Mountain Mach-2 controller. | ||
169 | Choose "FC-10/FC-20" if you have a Colorado FC-10 or FC-20 | ||
170 | controller. | ||
171 | Choose "Alt/82078" if you have another controller that is located at | ||
172 | an IO base address different from the standard floppy drive | ||
173 | controller's base address of `0x3f0', or uses an IRQ (interrupt) | ||
174 | channel different from `6', or a DMA channel different from | ||
175 | `2'. This is necessary for any controller card that is based on | ||
176 | Intel's 82078 FDC such as Seagate's, Exabyte's and Iomega's "high | ||
177 | speed" controllers. | ||
178 | |||
179 | If you choose something other than "Standard" then please make | ||
180 | sure that the settings for the IO base address and the IRQ and DMA | ||
181 | channel in the configuration menus below are correct. Use the manual | ||
182 | of your tape drive to determine the correct settings! | ||
183 | |||
184 | If you are already successfully using your tape drive with another | ||
185 | operating system then you definitely should use the same settings | ||
186 | for the IO base, the IRQ and DMA channel that have proven to work | ||
187 | with that other OS. | ||
188 | |||
189 | Note that this menu lets you specify only the default setting for | ||
190 | the hardware setup. The hardware configuration can be changed at | ||
191 | boot time (when ftape is compiled into the kernel, i.e. if you | ||
192 | have said Y to "Floppy tape drive") or module load time (i.e. if you | ||
193 | have said M to "Floppy tape drive"). | ||
194 | |||
195 | Please read also the file <file:Documentation/ftape.txt> which | ||
196 | contains a short description of the parameters that can be set at | ||
197 | boot or load time. If you want to use your floppy tape drive on a | ||
198 | PCI-bus based system, please read the file | ||
199 | <file:drivers/char/ftape/README.PCI>. | ||
200 | |||
201 | config FT_MACH2 | ||
202 | bool "MACH-2" | ||
203 | |||
204 | config FT_PROBE_FC10 | ||
205 | bool "FC-10/FC-20" | ||
206 | |||
207 | config FT_ALT_FDC | ||
208 | bool "Alt/82078" | ||
209 | |||
210 | endchoice | ||
211 | |||
212 | comment "Consult the manuals of your tape drive for the correct settings!" | ||
213 | depends on FTAPE && !FT_STD_FDC | ||
214 | |||
215 | config FT_FDC_BASE | ||
216 | hex "IO base of the floppy disk controller" | ||
217 | depends on FTAPE && !FT_STD_FDC | ||
218 | default "0" | ||
219 | ---help--- | ||
220 | You don't need to specify a value if the following default | ||
221 | settings for the base IO address are correct: | ||
222 | <<< MACH-2 : 0x1E0 >>> | ||
223 | <<< FC-10/FC-20: 0x180 >>> | ||
224 | <<< Secondary : 0x370 >>> | ||
225 | Secondary refers to a secondary FDC controller like the "high speed" | ||
226 | controllers delivered by Seagate or Exabyte or Iomega's Ditto Dash. | ||
227 | Please make sure that the setting for the IO base address | ||
228 | specified here is correct. USE THE MANUAL OF YOUR TAPE DRIVE OR | ||
229 | CONTROLLER CARD TO DETERMINE THE CORRECT SETTING. If you are already | ||
230 | successfully using the tape drive with another operating system then | ||
231 | you definitely should use the same settings for the IO base that has | ||
232 | proven to work with that other OS. | ||
233 | |||
234 | Note that this menu lets you specify only the default setting for | ||
235 | the IO base. The hardware configuration can be changed at boot time | ||
236 | (when ftape is compiled into the kernel, i.e. if you specified Y to | ||
237 | "Floppy tape drive") or module load time (i.e. if you have said M to | ||
238 | "Floppy tape drive"). | ||
239 | |||
240 | Please read also the file <file:Documentation/ftape.txt> which | ||
241 | contains a short description of the parameters that can be set at | ||
242 | boot or load time. | ||
243 | |||
244 | config FT_FDC_IRQ | ||
245 | int "IRQ channel of the floppy disk controller" | ||
246 | depends on FTAPE && !FT_STD_FDC | ||
247 | default "0" | ||
248 | ---help--- | ||
249 | You don't need to specify a value if the following default | ||
250 | settings for the interrupt channel are correct: | ||
251 | <<< MACH-2 : 6 >>> | ||
252 | <<< FC-10/FC-20: 9 >>> | ||
253 | <<< Secondary : 6 >>> | ||
254 | Secondary refers to secondary a FDC controller like the "high speed" | ||
255 | controllers delivered by Seagate or Exabyte or Iomega's Ditto Dash. | ||
256 | Please make sure that the setting for the IO base address | ||
257 | specified here is correct. USE THE MANUAL OF YOUR TAPE DRIVE OR | ||
258 | CONTROLLER CARD TO DETERMINE THE CORRECT SETTING. If you are already | ||
259 | successfully using the tape drive with another operating system then | ||
260 | you definitely should use the same settings for the IO base that has | ||
261 | proven to work with that other OS. | ||
262 | |||
263 | Note that this menu lets you specify only the default setting for | ||
264 | the IRQ channel. The hardware configuration can be changed at boot | ||
265 | time (when ftape is compiled into the kernel, i.e. if you said Y to | ||
266 | "Floppy tape drive") or module load time (i.e. if you said M to | ||
267 | "Floppy tape drive"). | ||
268 | |||
269 | Please read also the file <file:Documentation/ftape.txt> which | ||
270 | contains a short description of the parameters that can be set at | ||
271 | boot or load time. | ||
272 | |||
273 | config FT_FDC_DMA | ||
274 | int "DMA channel of the floppy disk controller" | ||
275 | depends on FTAPE && !FT_STD_FDC | ||
276 | default "0" | ||
277 | ---help--- | ||
278 | You don't need to specify a value if the following default | ||
279 | settings for the DMA channel are correct: | ||
280 | <<< MACH-2 : 2 >>> | ||
281 | <<< FC-10/FC-20: 3 >>> | ||
282 | <<< Secondary : 2 >>> | ||
283 | Secondary refers to a secondary FDC controller like the "high speed" | ||
284 | controllers delivered by Seagate or Exabyte or Iomega's Ditto Dash. | ||
285 | Please make sure that the setting for the IO base address | ||
286 | specified here is correct. USE THE MANUAL OF YOUR TAPE DRIVE OR | ||
287 | CONTROLLER CARD TO DETERMINE THE CORRECT SETTING. If you are already | ||
288 | successfully using the tape drive with another operating system then | ||
289 | you definitely should use the same settings for the IO base that has | ||
290 | proven to work with that other OS. | ||
291 | |||
292 | Note that this menu lets you specify only the default setting for | ||
293 | the DMA channel. The hardware configuration can be changed at boot | ||
294 | time (when ftape is compiled into the kernel, i.e. if you said Y to | ||
295 | "Floppy tape drive") or module load time (i.e. if you said M to | ||
296 | "Floppy tape drive"). | ||
297 | |||
298 | Please read also the file <file:Documentation/ftape.txt> which | ||
299 | contains a short description of the parameters that can be set at | ||
300 | boot or load time. | ||
301 | |||
302 | config FT_FDC_THR | ||
303 | int "Default FIFO threshold (EXPERIMENTAL)" | ||
304 | depends on FTAPE && EXPERIMENTAL | ||
305 | default "8" | ||
306 | help | ||
307 | Set the FIFO threshold of the FDC. If this is higher the DMA | ||
308 | controller may serve the FDC after a higher latency time. If this is | ||
309 | lower, fewer DMA transfers occur leading to less bus contention. | ||
310 | You may try to tune this if ftape annoys you with "reduced data | ||
311 | rate because of excessive overrun errors" messages. However, this | ||
312 | doesn't seem to have too much effect. | ||
313 | |||
314 | If unsure, don't touch the initial value, i.e. leave it at "8". | ||
315 | |||
316 | config FT_FDC_MAX_RATE | ||
317 | int "Maximal data rate to use (EXPERIMENTAL)" | ||
318 | depends on FTAPE && EXPERIMENTAL | ||
319 | default "2000" | ||
320 | ---help--- | ||
321 | With some motherboard/FDC combinations ftape will not be able to | ||
322 | run your FDC/tape drive combination at the highest available | ||
323 | speed. If this is the case you'll encounter "reduced data rate | ||
324 | because of excessive overrun errors" messages and lots of retries | ||
325 | before ftape finally decides to reduce the data rate. | ||
326 | |||
327 | In this case it might be desirable to tell ftape beforehand that | ||
328 | it need not try to run the tape drive at the highest available | ||
329 | speed. If unsure, leave this disabled, i.e. leave it at 2000 | ||
330 | bits/sec. | ||
331 | |||
332 | config FT_ALPHA_CLOCK | ||
333 | int "CPU clock frequency of your DEC Alpha" if ALPHA | ||
334 | depends on FTAPE | ||
335 | default "0" | ||
336 | help | ||
337 | On some DEC Alpha machines the CPU clock frequency cannot be | ||
338 | determined automatically, so you need to specify it here ONLY if | ||
339 | running a DEC Alpha, otherwise this setting has no effect. | ||
340 | |||