Parallel zip-disk can't use EPP 32 bit with 2.4.x kernels

Parallel zip-disk can't use EPP 32 bit with 2.4.x kernels

[Davy Preuveneers]

Since I'm running the 2.4.x kernels, I'm having a little problem with my
parallel zip-disk. The ppa module can't use the EPP 32 protocol and uses
the PS/2 protocol instead (which is much slower), as shown by the boot
message of kernel 2.4.1:

   ppa: Version 2.07 (for Linux 2.4.x)
   ppa: Found device at ID 6, Attempting to use EPP 32 bit
   ppa: Found device at ID 6, Attempting to use PS/2
   ppa: Communication established with ID 6 using PS/2 
   scsi0 : Iomega VPI0 (ppa) interface
     Vendor: IOMEGA    Model: ZIP 100           Rev: J.03
     Type:   Direct-Access                      ANSI SCSI revision: 02
   Detected scsi removable disk sda at scsi0, channel 0, id 6, lun 0
   SCSI device sda: 196608 512-byte hdwr sectors (101 MB)
   sda: Write Protect is off
   sda: sda4

Kernels 2.2.x use the EPP 32 bit protocol while the 2.4.x versions don't,
although I have used the same options when compiling the new 2.4.1 kernel.
When I change the parallel port configuration in the BIOS from ECP/EPP to
EPP only (version 1.9), the 2.4.x kernels use the EPP 32 bit protocol as 
well, but then I can't use ECP with dma anymore.

Does anyone know what the problem is?

Davy


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Re: Parallel zip-disk can't use EPP 32 bit with 2.4.x kernels

[Forever shall I be.]

On Tue, Jan 30, 2001 at 07:17:28PM +0100, Davy Preuveneers wrote:
> Since I'm running the 2.4.x kernels, I'm having a little problem with my
> parallel zip-disk. The ppa module can't use the EPP 32 protocol and uses
> the PS/2 protocol instead (which is much slower), as shown by the boot
> message of kernel 2.4.1:
> 
[snip]
> 
> Kernels 2.2.x use the EPP 32 bit protocol while the 2.4.x versions don't,
> although I have used the same options when compiling the new 2.4.1 kernel.
> When I change the parallel port configuration in the BIOS from ECP/EPP to
> EPP only (version 1.9), the 2.4.x kernels use the EPP 32 bit protocol as 
> well, but then I can't use ECP with dma anymore.
> 
> Does anyone know what the problem is?

Are you sure you've given parport_pc the correct IRQ/DMA? It doesn't
seem to be able to detect them very well over here, so I need a line
such as:
	options parport_pc io=0x378 irq=7 dma=3

but YMMV :)

> 
> Davy

-- 
Zinx Verituse                           (See headers for gpg key info)
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Re: Parallel zip-disk can't use EPP 32 bit with 2.4.x kernels

[Davy Preuveneers]

On Tue, 30 Jan 2001, Forever shall I be. wrote:

> On Tue, Jan 30, 2001 at 07:17:28PM +0100, Davy Preuveneers wrote:
> > Since I'm running the 2.4.x kernels, I'm having a little problem with my
> > parallel zip-disk. The ppa module can't use the EPP 32 protocol and uses
> > the PS/2 protocol instead (which is much slower), as shown by the boot
> > message of kernel 2.4.1:
> > 
> [snip]
> > 
> > Kernels 2.2.x use the EPP 32 bit protocol while the 2.4.x versions don't,
> > although I have used the same options when compiling the new 2.4.1 kernel.
> > When I change the parallel port configuration in the BIOS from ECP/EPP to
> > EPP only (version 1.9), the 2.4.x kernels use the EPP 32 bit protocol as 
> > well, but then I can't use ECP with dma anymore.
> > 
> > Does anyone know what the problem is?
> 
> Are you sure you've given parport_pc the correct IRQ/DMA? It doesn't
> seem to be able to detect them very well over here, so I need a line
> such as:
> 	options parport_pc io=0x378 irq=7 dma=3
> 
> but YMMV :)

Yes, I tried that already, but no effect

> 
> > 
> > Davy
> 
> -- 
> Zinx Verituse                           (See headers for gpg key info)
> 

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