Re: iwm(4) broken on latest -current kernel

[Kevin Bloom <ktnb%posteo.net@localhost>]

Kevin Bloom <ktnb%posteo.net@localhost> wrote:

> (Michael van Elst) <mlelstv%serpens.de@localhost> wrote:
> 
> > ktnb%posteo.net@localhost (Kevin Bloom) writes:
> > 
> > >(Michael van Elst) <mlelstv%serpens.de@localhost> wrote:
> > >> Can you please provide the type of your iwm device. E.g. output
> > >> from dmesg like:
> > 
> > >Sure thing:
> > 
> > >[     1.040837] iwm0 at pci2 dev 0 function 0: Intel Dual Band Wireless AC 8260 (rev. 0x3a)
> > >[     1.040837] iwm0: interrupting at msi2 vec 0
> > >[     6.265043] iwm0: hw rev 0x200, fw ver 22.361476.0, address xx:xx:xx:xx:xx:xx
> > 
> > 
> > This gets "interesting". A similar device was already tested successfully,
> > but there are at least two versions of AC 8260 that might behave differently.
> > 
> > One test would be to use a more recent firmware for it. You should already
> > have (in /libdata/firmware/if_iwm/):
> > 
> > SHA1 (iwlwifi-8000C-22.ucode) = 7ff722a5d1f968c20a6592c13f5a64d35e7da178
> > SHA1 (iwlwifi-8000C-36.ucode) = a6a01d48822dac433f8fcddf0eaa43fb9c45314f
> > 
> > and the driver selects the older version as the newer failed for us, probably
> > because it requires more features in the driver.
> > 
> > So one test would be to build a kernel that selects the newer firmware.
> > 
> > The driver source contains:
> > 
> > #if 0
> > /* 8000C-36 */
> >                 sc->sc_fwname = "iwlwifi-8000C-36.ucode";
> > #else 
> > /* 8000C-22 */
> >                 sc->sc_fwname = "iwlwifi-8000C-22.ucode";
> > #endif
> > 
> > and by changing '#if 0' to 'if 1' it will select the new firmware.
> > 
> > 
> > Another difference of course could be your environment. Do you use
> > a simple WPA2 net with pre-shared key or something more complex ?
> > 

I was able to test this modification and I get the following in dmesg(1):
[    21.083378] iwm0: dumping device error log
[    21.083378] iwm0: Start Error Log Dump:
[    21.083378] iwm0: Status: 0x7e1, count: 6
[    21.083378] iwm0: 00003706 | ADVANCED_SYSASSERT          
[    21.083378] iwm0: 008002F1 | trm_hw_status0
[    21.083378] iwm0: 00000000 | trm_hw_status1
[    21.083378] iwm0: 0002438C | branchlink2
[    21.083378] iwm0: 00039C22 | interruptlink1
[    21.083378] iwm0: 00000000 | interruptlink2
[    21.083378] iwm0: 00000001 | data1
[    21.083378] iwm0: 00000004 | data2
[    21.083378] iwm0: DEADBEEF | data3
[    21.083378] iwm0: 00000000 | beacon time
[    21.083378] iwm0: 0044F51E | tsf low
[    21.083378] iwm0: 00000000 | tsf hi
[    21.083378] iwm0: 00000000 | time gp1
[    21.083378] iwm0: 0044F51F | time gp2
[    21.083378] iwm0: 00000001 | uCode revision type
[    21.083378] iwm0: 00000024 | uCode version major
[    21.083378] iwm0: CA7B901D | uCode version minor
[    21.083378] iwm0: 00000201 | hw version
[    21.083378] iwm0: 18889008 | board version
[    21.083378] iwm0: 0500001C | hcmd
[    21.083378] iwm0: 00023002 | isr0
[    21.083378] iwm0: 00058000 | isr1
[    21.083378] iwm0: 08001802 | isr2
[    21.083378] iwm0: 00417CC1 | isr3
[    21.083378] iwm0: 00000000 | isr4
[    21.083378] iwm0: 00270029 | last cmd Id
[    21.083378] iwm0: 00000000 | wait_event
[    21.083378] iwm0: 00006A99 | l2p_control
[    21.083378] iwm0: 00004C00 | l2p_duration
[    21.083378] iwm0: 00000000 | l2p_mhvalid
[    21.083378] iwm0: 000000A0 | l2p_addr_match
[    21.083378] iwm0: 0000000D | lmpm_pmg_sel
[    21.083378] iwm0: 10032207 | timestamp
[    21.083378] iwm0: 00007888 | flow_handler
[    21.083378] iwm0: Start UMAC Error Log Dump:
[    21.083378] iwm0: Status: 0x7e1, count: 7
[    21.083378] iwm0: 0x00000070 | NMI_INTERRUPT_LMAC_FATAL
[    21.083378] iwm0: 0x00000000 | umac branchlink1
[    21.083378] iwm0: 0xC0086B3C | umac branchlink2
[    21.083378] iwm0: 0xC0083D08 | umac interruptlink1
[    21.083378] iwm0: 0xC0083D08 | umac interruptlink2
[    21.083378] iwm0: 0x00000800 | umac data1
[    21.083378] iwm0: 0xC0083D08 | umac data2
[    21.083378] iwm0: 0xDEADBEEF | umac data3
[    21.083378] iwm0: 0x00000024 | umac major
[    21.083378] iwm0: 0xCA7B901D | umac minor
[    21.083378] iwm0: 0xC088628C | frame pointer
[    21.083378] iwm0: 0xC088628C | stack pointer
[    21.083378] iwm0: 0x00270029 | last host cmd
[    21.083378] iwm0: 0x00000000 | isr status reg
[    21.083378] driver status:
[    21.083378]   tx ring  0: qid=0  cur=40  queued=0  
[    21.083378]   tx ring  1: qid=1  cur=0   queued=0  
[    21.083378]   tx ring  2: qid=2  cur=0   queued=0  
[    21.083378]   tx ring  3: qid=3  cur=0   queued=0  
[    21.083378]   tx ring  4: qid=4  cur=0   queued=0  

[    21.083378]   tx ring  5: qid=5  cur=1   queued=1  
[    21.083378]   tx ring  6: qid=6  cur=0   queued=0  
[    21.083378]   tx ring  7: qid=7  cur=0   queued=0  
[    21.083378]   tx ring  8: qid=8  cur=0   queued=0  
[    21.083378]   tx ring  9: qid=9  cur=0   queued=0  
[    21.083378]   tx ring 10: qid=10 cur=0   queued=0  
[    21.083378]   tx ring 11: qid=11 cur=0   queued=0  
[    21.083378]   tx ring 12: qid=12 cur=0   queued=0  
[    21.083378]   tx ring 13: qid=13 cur=0   queued=0  
[    21.083378]   tx ring 14: qid=14 cur=0   queued=0  
[    21.083378]   tx ring 15: qid=15 cur=0   queued=0  
[    21.083378]   tx ring 16: qid=16 cur=0   queued=0  
[    21.083378]   tx ring 17: qid=17 cur=0   queued=0  
[    21.083378]   tx ring 18: qid=18 cur=0   queued=0  
[    21.083378]   tx ring 19: qid=19 cur=0   queued=0  
[    21.083378]   tx ring 20: qid=20 cur=0   queued=0  
[    21.083378]   tx ring 21: qid=21 cur=0   queued=0  
[    21.083378]   tx ring 22: qid=22 cur=0   queued=0  
[    21.083378]   tx ring 23: qid=23 cur=0   queued=0  
[    21.083378]   tx ring 24: qid=24 cur=0   queued=0  
[    21.083378]   tx ring 25: qid=25 cur=0   queued=0  
[    21.083378]   tx ring 26: qid=26 cur=0   queued=0  
[    21.083378]   tx ring 27: qid=27 cur=0   queued=0  
[    21.083378]   tx ring 28: qid=28 cur=0   queued=0  
[    21.083378]   tx ring 29: qid=29 cur=0   queued=0  
[    21.083378]   tx ring 30: qid=30 cur=0   queued=0  
[    21.083378]   rx ring: cur=128
[    21.083378]   802.11 state AUTH
[    21.083378] iwm0: autoconfiguration error: fatal firmware err