[Linux-mips-kernel] mips generic pci code

[Pete P. <pp...@pa...>]

  One of the things I would like to add to the mips tree is generic pci 
code.  Jun recently ported the PPC pci_auto.c and pci.c code to one of 
the DDB NEC boards.  Now I've taken that code and made it mips generic. 
 I've tested it on one mips board so far; I will soon have it tested on 
a couple of more boards.The code has two components: pci_auto.c and 
pci.c.  The pci_auto (if enabled) scans the bus(es) and assigns all the 
resources. Thus, you don't need boot code to do that anymore. This code 
has been tested pretty well on PPC on some pretty complex CPCI systems 
with multiple P2P bridges and devices behind the bridges.  pci.c is the 
second part and that's just generic pci handling code that all boards 
should be able to use.

We've modified the code somewhat from the PPC and it certainly needs a 
lot of testing. However, it's only enabled in arch/mips/config.in for 
boards that are tested so other boards can take their time moving over 
to this code.  I think this code is badly needed in the mips tree 
because right now every board is doing its own pci thing. Add to that 
different boot codes on different boards which don't necessarily 
initialize the bus correctly, and you've got a real mess.

Comments?

Pete