Messages in this thread | | | Date | Wed, 27 Jan 1999 16:27:12 -0500 (EST) | From | Andy Poling <> | Subject | Re: Big Fix for 2.2.1 |
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Note: CC list pruned because it was starting to read like a Whos Who of Linux. :-)
On Wed, 27 Jan 1999, Linux Lists wrote: > > and then change everybody who uses "readX/writeX" to legacy addresses to > > do read_ISA_X/write_ISA_X and then have something like [...] > Please don't do that. The Cyclades driver supports both ISA and PCI cards, > and it follows correctly the current definition, by ioremap'ing addresses > above 1MB and using readX/writeX for _all_ accesses to MMIO resources (in > ISA or PCI). Doing this change would mean having to test which card I'm > accessing _every time_ I do a readX/writeX, which is completelly > unacceptable (for obvious performance reasons).
Ivan-
Perhaps I'm naive, or missing something really obvious here, but...
Shouldn't you already know which bus-type of card you're accessing long before you get to the performance-critical code in any driver?
-Andy
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