| 1 |
Where is the proper place to ask about parports ? |
| 2 |
|
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/// |
| 4 |
|
| 5 |
I get: |
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# echo -n 1 > /dev/parport0 |
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bash: echo: write error: Invalid argument |
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|
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i.e. error 22 (EINVAL), as if there isn't any write routine |
| 10 |
in the driver. I have tested two identical cards, same story. |
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|
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Same thing with reading: |
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$ dd if=/dev/parport0 count=1 bs=1 |
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dd: error reading '/dev/parport0': Invalid argument |
| 15 |
0+0 records in |
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0+0 records out |
| 17 |
0 bytes copied, 6.2359e-05 s, 0.0 kB/s |
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|
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open() and close() works without errors. |
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|
| 21 |
How can I make it functional ? |
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|
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/// |
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|
| 25 |
I have two Delock 1x par, 2x ser pcie cards (only one installed). |
| 26 |
The parport one show up (lspci -vn) as: |
| 27 |
05:00.2 0701: 9710:9912 (prog-if 03 [IEEE1284]) |
| 28 |
Subsystem: a000:2000 |
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Flags: bus master, fast devsel, latency 0, IRQ 17 |
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I/O ports at ad00 [size=8] |
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I/O ports at ac00 [size=8] |
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Memory at fd8fb000 (32-bit, non-prefetchable) [size=4K] |
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Memory at fd8fa000 (32-bit, non-prefetchable) [size=4K] |
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Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+ |
| 35 |
Capabilities: [78] Power Management version 3 |
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Capabilities: [80] Express Legacy Endpoint, MSI 00 |
| 37 |
Capabilities: [100] Advanced Error Reporting |
| 38 |
Kernel driver in use: parport_serial |
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Kernel modules: parport_serial |
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|
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it matches: |
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{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9912, |
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0xA000, 0x2000, 0, 0, netmos_99xx_1p } |
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i.e. lines 176-177 in drivers/parport/parport_serial.c |
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in the kernel source, last changed ages ago: |
| 46 |
commit b9b24558f7d36c550b5cf0b550a8926f8c03cdbd |
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Author: Frédéric Brière <fbriere@×××××××.net> |
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Date: Sun May 29 15:08:04 2011 -0400 |
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|
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It shows up in the log as: |
| 51 |
parport0: PC-style at 0xad00 (0xac00), irq 17, using FIFO [PCSPP,TRISTATE,COMPAT,EPP,ECP] |
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or |
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parport0: PC-style at 0xad00 (0xac00), irq 17 [PCSPP,TRISTATE,EPP] |
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depending if I have CONFIG_PARPORT_PC_FIFO set or not in the kernel |
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|
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I cannot set irq to none, it shows up as irq 17 even though I do: |
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# modprobe parport_pc irq=none |
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# modprobe parport_serial irq=none |
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|
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The device file has sensible maj/min numbers: |
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# ls -l /dev/parport0 |
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crw-rw---- 1 root users 99, 0 Jan 18 2016 /dev/parport0 |
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|
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Regards, |
| 65 |
/Karl Hammar |
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