Re: Call for Test and Review: bwn(4) - another Broadcom Wireless driver

[Alexandr Rybalko]

On Wed, 3 Mar 2010 00:28:33 -0800
Weongyo Jeong weongyo.je...@gmail.com wrote:

 On Mon, Mar 01, 2010 at 10:32:40AM +0200, Alexandr Rybalko wrote:
  On Sun, 28 Feb 2010 01:52:59 -0800
  Weongyo Jeong weongyo.je...@gmail.com wrote:
  
  Can You test your driver without siba_switchcore, I see the device
  have mapping for all cores on SSB?
 
 I see what you mean.  siba_core.c which depends on PCI code would be
 compiled when it builds on SENTRY5.  So it looks currently it needs a
 patch to compile siba bus code without PCI code.  I'll try to make a
 patch.

I now trying to make bus independent interface, not done yet.
When finish, I send to You for review and maybe test.

 
   ssb0: Broadcom BCM4315 802.11b/g Wireless mem 0xf400-0xf4003fff 
  Think thre is 4 cores.
  When SSB on nexus, we don`t need core switching, maybe on PCI too.
 
 I think this is a difference between siba(4) and siba_bwn currently and
 it's one of TODOs we should solve to merge two codes.
 
 AFAIK approach to access each cores isn't same; it looks siba(4) creates
 devices for each cores so it'd not need to switch cores.  But siba_bwn
 doesn't do it like siba(4) so it needs to switch cores because all are
 handled on one device.

Look into this line:
ssb0: Broadcom BCM4315 802.11b/g Wireless mem 0xf400-0xf4003fff 
There we see, device have 0x4000 memory window. Each core required 0x1000.
Your code to call required core move PCI window to appropriate 0x1000 block 
(if core - second, move to 0xf4001000).
Maybe we can map full window, and then access to required core without core 
switching.

 
 regards,
 Weongyo Jeong
 


-- 
Рыбалко Александр
Консультант D-Link Украина
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Re: Call for Test and Review: bwn(4) - another Broadcom Wireless driver

[Alexandr Rybalko]

On Sun, 28 Feb 2010 01:52:59 -0800
Weongyo Jeong weongyo.je...@gmail.com wrote:

 On Sat, Feb 27, 2010 at 01:15:35AM +0200, Alex RAY wrote:
  Hi Weongyo,
  
  Can new siba release operate in systems like in this SVG image?
  System example: CPU BCM5836 + Wi-Fi BCM4318
 
 Recent changes of siba(4) by myself doesn't change code flow, layout and
 doesn't include enhancements if you're an user of SENTRY5 mips CPU (like
 BCM5836)
 
 All I did on recent changes were to put common routines or codes which
 could be used for original siba(4).  These codes are only used for
 bwn(4) driver currently and don't be merged with original siba(4).  That
 means there are two separated codes in current siba(4) so merging two
 into one is a TODO.
 
 I have no idea current siba(4) supports a system using on CPU BCM5836 +
 Wi-Fi BCM4318 but in theory it should work without problems though I
 didn't test.
 
  And can we compile siba bus code without pci code?
 
 I think it looks that it could be possible to compile without pci code.
 But makes sure that your device doesn't have PCI core.
 
 regards,
 Weongyo Jeong
 

Can You test your driver without siba_switchcore, I see the device have mapping 
for all cores on SSB?
 ssb0: Broadcom BCM4315 802.11b/g Wireless mem 0xf400-0xf4003fff 
Think thre is 4 cores.

When SSB on nexus, we don`t need core switching, maybe on PCI too.


-- 
Alexandr Rybalko r...@dlink.ua 
aka Alex RAY r...@ddteam.net
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