iwn 5100AGN for netbsd-5 success

[Chuck Zmudzinski <brchuckz%netscape.net@localhost>]

I saw in the mailing list archives a few weeks back that iwn(4) for 
5100/5300 AGN devices was working in netbsd-current but hasn't been 
ported to netbsd-5 yet.  I decided to try and get it working in netbsd-5 
with minimal changes to the netbsd-5 kernel sources and have had some 
success.

Seven files were patched in src/sys/dev/pci: if_iwn.c, if_iwnreg.h 
if_iwnvar.h, pcidevs, pcidevs.h pcidevs_data.h, and pcireg.h.

The details:

1. Used the first of version of src/sys/dev/if_iwn.c that works with the 
5100/5300 iwn devices from the current branch (revision 1.33), but 
removed the two lines associated with revision 1.25 of 
src/sys/dev/if_iwn.c.  The iwn(4) driver failed in netbsd-5 with that 
revision included - that revision was part of a major commit to the 
netbsd-current kernel networking code.

2. Used the first version of src/sys/dev/if_iwnreg.h that works with the 
5100/5300 iwn devices from the current branch (revision 1.6).

3. Used the first version of src/sys/dev/if_iwnvar.h that works with the 
5100/5300 iwn devices from the current branch (revision 1.6).)

4. Edited the src/sys/dev/pcidevs file to add the new iwn devices (these 
changes are derived from additions to pcidevs between revision 1.967 and 
1.968 of src/sys/dev/pcidevs, but I changed "Pro/Wireless" to 
"PRO/Wireless" for consistency with the other devices):

product INTEL PRO_WL_5100AGN_1    0x4232    PRO/Wireless LAN 5100AGN 
Mini-PCI Adapter
product INTEL PRO_WL_5300AGN_1    0x4235    PRO/Wireless LAN 5300AGN 
Mini-PCI Adapter
product INTEL PRO_WL_5300AGN_2    0x4236    PRO/Wireless LAN 5300AGN 
Mini-PCI Adapter
product INTEL PRO_WL_5100AGN_2    0x4237    PRO/Wireless LAN 5100AGN 
Mini-PCI Adapter
product INTEL PRO_WL_5350AGN_1    0x423a    PRO/Wireless LAN 5350AGN 
Mini-PCI Adapter
product INTEL PRO_WL_5350AGN_2    0x423b    PRO/Wireless LAN 5350AGN 
Mini-PCI Adapter

5. Regenerated src/sys/dev/pcidevs.h and src/sys/dev/pcidevs_data.h 
using 'make -f Makefile.pcidevs'

6. Edited the src/sys/dev/pcireg.h file to add the changes that were 
included in the changes to pcireg.h when the support was added for the 
new iwn(4) devices in netbsd-current.  It is essentially revision 1.57 
(the netbsd-5 version) of pcireg.h patched with the changes between 
revision 1.60 and 1.61 of pcireg.h.

7. Added the updated firmware for the 5100 AGN to my filesystem.

The 5100 iwn(4) device in my Toshiba laptop successfully runs 'dhclient 
iwn0' in my patched netbsd-5 kernel (I am using the 5.0.2 release) where 
it listened for dhcp offers, but I haven't tested it with an actual 
wireless network in range yet to see if it makes a connection - I assume 
it will work with a network in range; if it doesn't when I try it I'll 
post a followup message.

The actual patchfile against the netbsd-5 kernel is too big to post here 
(about 300K) because the difference in if_iwn.c between the netbsd-5 
version (revision 1.22.4.3 I think) and revision 1.33 is rather large.