Re: pcmcia (again)

[Pete Popov <ppopov@pacbell.net>]

Jim Paris wrote:
> Thanks for your reply.
> 
> 
>>If your pcmcia
>>controller is not one of the ones that linux already supports (ie,
>>no socket driver for it), you might encounter problems beyond just
>>the ones you describe above.
>>
> 
> My PCMCIA controller is an i82365-compatible VG-469.  The driver for
> that works; there are some linux-vr specific modifications to it that
> allow it to work with remapped interrupts.
> 
> The I/O port mapping also seems to work fine, as the controller is
> detected and it has no trouble seeing when cards are inserted.
> 
> The problem comes in with cs.c; it doesn't seem to know about the
> ISA memory remapping:
> 
> cs: IO port probe 0x0100-0x04ff: excluding 0x100-0x107
> initializing socket 0
> cs: memory probe 0x0d0000-0x0dffff: excluding 0xd0000-0xdffff
> cs: memory probe 0x0c0000-0x0cffff: excluding 0xc0000-0xcffff
> cs: unable to map card memory!
> cs: unable to map card memory!
> initializing socket 1
> cs: unable to map card memory!
> cs: unable to map card memory!
> 
> And, from my inspection of the code, this seems to be caused by the
> fact that it assumes that if it's ISA, the memory is mapped to
> absolute address 0; rsrc_mgr.c excludes those memory regions and fails
> to find available ISA memory space because the kernel already has
> 0x000000-0xffffff allocated to system RAM.
> 
> Am I misunderstanding something here?  Is there some simple way to get
> the PCMCIA driver to use isa_slot_offset when checking and
> requesting memory regions?  I tried adding that offset to the
> check_mem_resource, request_mem_region, and release_mem_region calls,
> and changing all of the readx/writex() calls to isa_readx/isa_writex(),
> but things still don't work right.

Are ioport_resource.{start,end} and iomem_resource.{start,end} set correctly?
Perhaps you haven't set those up and the requests are failing.


Pete