Messages in this thread | | | Date | Mon, 08 Nov 2004 08:46:41 -0800 | From | "Randy.Dunlap" <> | Subject | Re: isa memory address |
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Antonino Sergi wrote: > Hi, > > I'm working with an old data acquisition system that uses an 8-bit card > in an ISA slot (address 0xd0000), by a simple driver I ported from > kernel 1.1.x to 2.2.24. > > It works fine, but I'd like to have features by newer kernels (2.4 or > even 2.6), like new filesystems support. > > On kernels >=2.4.0 check_region returns -EBUSY for that address, > but it is not actually used; I tried to understand if something has been > changed/removed, because of obsolescence of devices, in IO management, > but I couldn't. > > Does anybody have any explanation/suggestion?
Please post contents of /proc/iomem . I'm guessing that it will show something like: 000e0000-000effff : Extension ROM (but for address 000d0000). So then the question becomes how to assign/allocate it for your driver.
You might have to dummy up a call to release_resource() first, then use request_resource() to acquire it. Or just use the addresses anyway.... even though check_region() says -EBUSY. BTW, check_region() is deprecated in 2.6.x, so if your driver could just use request_region() and release_region(), that would be better.
> Thank you > > Best Regards, > > Antonino Sergi > > PS:As I'm not subscribed, please CC me your answers.
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