Re: Fwd: After kernel 6.3.7 or 6.3.8 b43 driver fails

From: Sardonimous
Date: Mon Jun 26 2023 - 08:45:54 EST


On 6/25/23 18:05, Larry Finger wrote:
On 6/25/23 16:11, Sardonimous wrote:
On 6/25/23 13:17, Larry Finger wrote:

On 6/25/23 13:12, Arnd Bergmann wrote:
On Sun, Jun 25, 2023, at 18:58, Sardonimous wrote:
I have been unable to get DMA to work in the past.  So I have been
configuring it with PIO=1 (/etc/modprobe,d/b43.conf):

      options b43 pio=1 qos=0


I think the qos=0 parameter is what causes the WARN_ON(), as that
causes the use of only one queue, while the warning happens when
tx function iterates over all the queues and warns that they don't
exist.

I agree and suggest running with no options. If we need debug, we can turn it on later.

Larry

Sure. Of course, this is what I started out with years ago (2017?) when I was trying to get this to work.

Now:
Linux version 6.3.9-arch1-1 (linux@archlinux) (gcc (GCC) 13.1.1 20230429, GNU ld (GNU Binutils) 2.40.0) #1 SMP PREEMPT_DYNAMIC Wed, 21 Jun 2023 20:46:20 +0000

This is the sort of loop I get (dmesg | grep b43):

[   31.979539] b43-pci-bridge 0000:02:00.0: Sonics Silicon Backplane found on PCI device 0000:02:00.0
[   35.239389] b43-phy0: Broadcom 4322 WLAN found (core revision 16)
[   35.275018] b43-phy0: Found PHY: Analog 8, Type 4 (N), Revision 4
[   35.275046] b43-phy0: Found Radio: Manuf 0x17F, ID 0x2056, Revision 3, Version 0
[   66.890631] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
[   67.437162] b43-phy0 ERROR: DMA RX reset timed out
[   67.498976] b43 ssb0:0: Timeout waiting for bitmask 01800000 on register 0F90 to clear
[   67.707177] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
[  391.127300] b43-phy0 ERROR: DMA RX reset timed out
[  391.360514] b43-phy0 ERROR: DMA TX reset timed out
[  391.382127] b43 ssb0:0: Timeout waiting for bitmask 01800000 on register 0F90 to clear
[  391.590659] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
[  709.123840] b43-phy0 ERROR: DMA RX reset timed out
[  709.357235] b43-phy0 ERROR: DMA TX reset timed out
[  709.378623] b43 ssb0:0: Timeout waiting for bitmask 01800000 on register 0F90 to clear
[  709.573851] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)

Sardonimous,

Did it ever work with DMA. or was PIO the only way to get it to work?

No, I never got it to work without specifying PIO=1.

If you add in only the pio=1 option without qos, will it work?

In this case, authentication to the router fails.

[   31.021510] b43-pci-bridge 0000:02:00.0: Sonics Silicon Backplane found on PCI device 0000:02:00.0
[   33.889890] b43-phy0: Broadcom 4322 WLAN found (core revision 16)
[   33.925016] b43-phy0: Found PHY: Analog 8, Type 4 (N), Revision 4
[   33.925053] b43-phy0: Found Radio: Manuf 0x17F, ID 0x2056, Revision 3, Version 0
[   63.863977] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
[   64.170661] b43-phy0 warning: Forced PIO by use_pio module parameter. This should not be needed and will result in lower performance.
[   64.550635] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
[   64.847342] b43-phy0 warning: Forced PIO by use_pio module parameter. This should not be needed and will result in lower performance.
[   90.247286] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
[   90.514031] b43-phy0 warning: Forced PIO by use_pio module parameter. This should not be needed and will result in lower performance.
[   91.263462] wlan0: authenticate with 0c:80:63:26:16:b5
[   91.551389] wlan0: send auth to 0c:80:63:26:16:b5 (try 1/3)
[   91.551916] wlan0: authenticated
[   91.553776] wlan0: associate with 0c:80:63:26:16:b5 (try 1/3)
[   91.554656] wlan0: RX AssocResp from 0c:80:63:26:16:b5 (capab=0x11 status=0 aid=9)
[   91.554883] wlan0: associated
[   99.619556] wlan0: deauthenticated from 0c:80:63:26:16:b5 (Reason: 15=4WAY_HANDSHAKE_TIMEOUT)
[  100.348068] wlan0: authenticate with 0c:80:63:26:16:b4
[  100.640896] wlan0: send auth to 0c:80:63:26:16:b4 (try 1/3)
[  100.647930] wlan0: authenticated
[  100.653778] wlan0: associate with 0c:80:63:26:16:b4 (try 1/3)
[  100.654653] wlan0: RX AssocResp from 0c:80:63:26:16:b4 (capab=0x11 status=0 aid=9)
[  100.654884] wlan0: associated
[  108.717245] wlan0: deauthenticated from 0c:80:63:26:16:b4 (Reason: 15=4WAY_HANDSHAKE_TIMEOUT)
[  109.267996] wlan0: authenticate with 0c:80:63:26:16:b6
[  109.767538] wlan0: send auth to 0c:80:63:26:16:b6 (try 1/3)
[  109.769105] wlan0: authenticated
[  109.773778] wlan0: associate with 0c:80:63:26:16:b6 (try 1/3)
[  109.776774] wlan0: RX AssocResp from 0c:80:63:26:16:b6 (capab=0x431 status=0 aid=3)
[  109.777254] wlan0: associated
[  116.001372] wlan0: deauthenticating from 0c:80:63:26:16:b6 by local choice (Reason: 3=DEAUTH_LEAVING)
[  126.612857] wlan0: authenticate with 0c:80:63:26:16:b5
[  127.234092] wlan0: send auth to 0c:80:63:26:16:b5 (try 1/3)
[  127.234734] wlan0: authenticated
[  127.237108] wlan0: associate with 0c:80:63:26:16:b5 (try 1/3)
[  127.238173] wlan0: RX AssocResp from 0c:80:63:26:16:b5 (capab=0x11 status=0 aid=9)
[  127.238410] wlan0: associated
[  136.279232] wlan0: deauthenticated from 0c:80:63:26:16:b5 (Reason: 15=4WAY_HANDSHAKE_TIMEOUT)
[  136.991245] wlan0: authenticate with 0c:80:63:26:16:b4
[  137.254104] wlan0: send auth to 0c:80:63:26:16:b4 (try 1/3)
[  137.254645] wlan0: authenticated
[  137.260507] wlan0: associate with 0c:80:63:26:16:b4 (try 1/3)
[  137.261447] wlan0: RX AssocResp from 0c:80:63:26:16:b4 (capab=0x11 status=0 aid=9)
[  137.261699] wlan0: associated
[  141.001670] wlan0: deauthenticating from 0c:80:63:26:16:b4 by local choice (Reason: 3=DEAUTH_LEAVING)
[  141.081565] wlan0: authenticate with 0c:80:63:26:16:b4
[  141.117429] wlan0: send auth to 0c:80:63:26:16:b4 (try 1/3)
[  141.117979] wlan0: authenticated
[  141.123927] wlan0: associate with 0c:80:63:26:16:b4 (try 1/3)
[  141.124662] wlan0: RX AssocResp from 0c:80:63:26:16:b4 (capab=0x11 status=0 aid=9)
[  141.124895] wlan0: associated
[  149.240176] wlan0: deauthenticated from 0c:80:63:26:16:b4 (Reason: 15=4WAY_HANDSHAKE_TIMEOUT)
[  166.273957] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
[  166.577378] b43-phy0 warning: Forced PIO by use_pio module parameter. This should not be needed and will result in lower performance.
[  177.507291] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
[  177.780745] b43-phy0 warning: Forced PIO by use_pio module parameter. This should not be needed and will result in lower performance.If I were to send you some test patches, could you create a kernel with them applied?

Doubtful.

Larry