re: kern/56245: NetBSD 9.2 amd64 with AMD FirePro W4100 throws constant kernel errors of 'Can't enable IRQ/MSI because no handler is installed'

["Andy Wallis" <rawallis%panix.com@localhost>]

The following reply was made to PR kern/56245; it has been noted by GNATS.

From: "Andy Wallis" <rawallis%panix.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost,
 gnats-admin%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost,
 rawallis%panix.com@localhost
Subject: re: kern/56245: NetBSD 9.2 amd64 with AMD FirePro W4100 throws
 constant kernel errors of 'Can't enable IRQ/MSI because no handler is
 installed'
Date: Sun, 13 Jun 2021 22:54:53 -0400

 > The following reply was made to PR kern/56245; it has been noted by GNATS.
 >
 > From: matthew green <mrg%eterna.com.au@localhost>
 > To: gnats-bugs%netbsd.org@localhost
 > Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
 >     netbsd-bugs%netbsd.org@localhost
 > Subject: re: kern/56245: NetBSD 9.2 amd64 with AMD FirePro W4100 throws
 > constant kernel errors of 'Can't enable IRQ/MSI because no handler is
 > installed'
 > Date: Mon, 14 Jun 2021 08:11:09 +1000
 >
 >  this is strange.
 >
 >  > Jun  4 18:33:45 vorlon /netbsd: [   8.6896180] radeon0: info: radeon:
 > MS=
 >  I limited to 32-bit
 >  > Jun  4 18:33:45 vorlon /netbsd: [   8.6896180] radeon0: interrupting at
 > =
 >  ioapic0 pin 16 (radeon0)
 >  > Jun  4 18:33:45 vorlon /netbsd: [   8.6896180] kern info: [drm] radeon:
 > =
 >  irq initialized.
 >
 >  so, MSI is not enabled, otherwise this message wuld appear:
 >
 >     dev_info(rdev->dev, "radeon: using MSI.\n");
 >
 >  > Jun  4 18:33:45 vorlon /netbsd: [   9.8597595] warning:
 > /usr/src/sys/ext=
 >  ernal/bsd/drm2/dist/drm/radeon/radeon_si.c:6101: Can't enable IRQ/MSI
 > beca=
 >  use no handler is installed
 >
 >  so, this seems impossible.  that message happens if
 >  rdev->irq.installed is not set in si_irq_set().
 >
 >  si_startup() checks if it's not enabled, and then
 >  calls radeon_irq_kms_init() to set it, which sets
 >  installed =3D true, so the call a few lines later to
 >  si_irq_set() should have it set, instead of the
 >  error message it displays and doesn't setup.
 >
 >  i don't see a path that doesn't do this, but i guess
 >  there's something i'm missing.
 >
 >  > spamming syslog messages.
 >  > [ 428896.996373] kern error:
 > [drm:(/usr/src/sys/external/bsd/drm2/dist/d=
 >  rm/radeon/radeon_si_dpm.c:6697)si_dpm_set_power_state] *ERROR*
 > si_enable_s=
 >  mc_cac fail ed
 >
 >  this happens on r600 as well, i never got around to look at why.
 >
 >
 >  .mrg.
 >
 >
 I did a clean boot on 9.2 and captured the following dmesg fragments
 [     8.444818] radeon0: info: VRAM: 2048M 0x0000000000000000 -
 0x000000007FFFFFFF (2048M used)
 [     8.444818] radeon0: info: GTT: 2048M 0x0000000080000000 -
 0x00000000FFFFFFFF
 [     8.444818] kern info: [drm] Detected VRAM RAM=800M, BAR=256M
 [     8.444818] kern info: [drm] RAM width 128bits DDR
 [     8.444818] Zone  kernel: Available graphics memory: 11320412 kiB
 [     8.444818] Zone   dma32: Available graphics memory: 2097152 kiB
 [     8.444818] kern info: [drm] radeon: 2048M of VRAM memory ready
 [     8.444818] kern info: [drm] radeon: 2048M of GTT memory ready.
 [     8.444818] kern info: [drm] Loading verde Microcode
 [     8.454748] kern info: [drm] radeon/VERDE_mc2.bin: 31500 bytes
 [     8.454748] kern info: [drm] Internal thermal controller with fan control
 [     8.464752] kern info: [drm] radeon: dpm initialized
 [     8.464752] kern info: [drm] Found VCE firmware/feedback version
 50.0.1 / 17!
 [     8.464752] kern info: [drm] GART: num cpu pages 524288, num gpu pages
 524288
 [     8.534779] kern info: [drm] PCIE GART of 2048M enabled (table at
 0x00000000002E8000).
 [     8.534779] radeon0: info: WB enabled
 [     8.534779] radeon0: info: fence driver on ring 0 use gpu addr
 0x0000000080000c00 and cpu addr 0x0xffff818b45837c00
 [     8.545446] radeon0: info: fence driver on ring 1 use gpu addr
 0x0000000080000c04 and cpu addr 0x0xffff818b45837c04
 [     8.545446] radeon0: info: fence driver on ring 2 use gpu addr
 0x0000000080000c08 and cpu addr 0x0xffff818b45837c08
 [     8.545446] radeon0: info: fence driver on ring 3 use gpu addr
 0x0000000080000c0c and cpu addr 0x0xffff818b45837c0c
 [     8.545446] radeon0: info: fence driver on ring 4 use gpu addr
 0x0000000080000c10 and cpu addr 0x0xffff818b45837c10
 [     8.545446] radeon0: info: fence driver on ring 5 use gpu addr
 0x0000000000075a18 and cpu addr 0x0xffff98025a9c5a18
 [     8.564790] radeon0: info: fence driver on ring 6 use gpu addr
 0x0000000080000c18 and cpu addr 0x0xffff818b45837c18
 [     8.564790] radeon0: info: fence driver on ring 7 use gpu addr
 0x0000000080000c1c and cpu addr 0x0xffff818b45837c1c
 [     8.564790] kern info: [drm] Supports vblank timestamp caching Rev 2
 (21.10.2013).
 [     8.564790] kern info: [drm] Driver supports precise vblank timestamp
 query.
 [     8.575482] radeon0: info: radeon: MSI limited to 32-bit
 [     8.575482] radeon0: interrupting at ioapic0 pin 16 (radeon0)
 [     8.575482] kern info: [drm] radeon: irq initialized.
 [     9.285070] kern error:
 [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_r600.c:2917)r600_ring_test]
 *ERROR* radeon: ring 0 test failed (scratch(0x850C)=0xCAFEDEAD)
 [     9.285070] radeon0: autoconfiguration error: error: disabling GPU
 acceleration
 [     9.465140] kern info: [drm] Radeon Display Connectors
 [     9.465140] kern info: [drm] Connector 0:
 [     9.465140] kern info: [drm]   DP-1
 [     9.465140] kern info: [drm]   HPD4
 [     9.475173] kern info: [drm]   DDC: 0x6540 0x6540 0x6544 0x6544 0x6548
 0x6548 0x654c 0x654c
 [     9.475173] kern info: [drm]   Encoders:
 [     9.475173] kern info: [drm]     DFP1: INTERNAL_UNIPHY2
 [     9.475173] kern info: [drm] Connector 1:
 [     9.475173] kern info: [drm]   DP-2
 [     9.475173] kern info: [drm]   HPD5
 [     9.475173] kern info: [drm]   DDC: 0x6530 0x6530 0x6534 0x6534 0x6538
 0x6538 0x653c 0x653c
 [     9.475173] kern info: [drm]   Encoders:
 [     9.475173] kern info: [drm]     DFP2: INTERNAL_UNIPHY1
 [     9.475173] kern info: [drm] Connector 2:
 [     9.475173] kern info: [drm]   DP-3
 [     9.485572] kern info: [drm]   HPD1
 [     9.485572] kern info: [drm]   DDC: 0x6560 0x6560 0x6564 0x6564 0x6568
 0x6568 0x656c 0x656c
 [     9.485572] kern info: [drm]   Encoders:
 [     9.485572] kern info: [drm]     DFP3: INTERNAL_UNIPHY1
 [     9.485572] kern info: [drm] Connector 3:
 [     9.485572] kern info: [drm]   DP-4
 [     9.485572] kern info: [drm]   HPD2
 [     9.485572] kern info: [drm]   DDC: 0x6580 0x6580 0x6584 0x6584 0x6588
 0x6588 0x658c 0x658c
 [     9.485572] kern info: [drm]   Encoders:
 [     9.485572] kern info: [drm]     DFP4: INTERNAL_UNIPHY
 [     9.495151] kern error:
 [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si_dpm.c:6697)si_dpm_set_power_state]
 *ERROR* si_enable_smc_cac failed
 [     9.555175] radeondrmkmsfb0 at radeon0
 [     9.555175] radeondrmkmsfb0: framebuffer at 0xffff98025abd3000, size
 1920x1080, depth 32, stride 7680
 [     9.735245] kern error:
 [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si_dpm.c:6697)si_dpm_set_power_state]
 *ERROR* si_enable_smc_cac failed
 [     9.745248] warning:
 /usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si.c:6101: Can't
 enable IRQ/MSI because no handler is installed
 [     9.805272] kern error:
 [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si_dpm.c:6697)si_dpm_set_power_state]
 *ERROR* si_enable_smc_cac failed
 [     9.816040] warning:
 /usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si.c:6101: Can't
 enable IRQ/MSI because no handler is installed
 [     9.845287] warning:
 /usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si.c:6101: Can't
 enable IRQ/MSI because no handler is installed
 [     9.875299] warning:
 /usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si.c:6101: Can't
 enable IRQ/MSI because no handler is installed
 [     9.925319] wsdisplay0 at radeondrmkmsfb0 kbdmux 1: console (default,
 vt100 emulation), using wskbd0
 
 
 I installed -current (9.99.84  /pub/NetBSD-daily/HEAD/202106121740Z)
 Here is the dmesg output from it
 
      8.444818] kern info: ATOM BIOS: C755
 [     8.444818] radeon0: info: VRAM: 2048M 0x0000000000000000 -
 0x000000007FFFFFFF (2048M used)
 [     8.444818] radeon0: info: GTT: 2048M 0x0000000080000000 -
 0x00000000FFFFFFFF
 [     8.444818] kern info: [drm] Detected VRAM RAM=800M, BAR=256M
 [     8.444818] kern info: [drm] RAM width 128bits DDR
 [     8.444818] Zone  kernel: Available graphics memory: 11320412 kiB
 [     8.444818] Zone   dma32: Available graphics memory: 2097152 kiB
 [     8.444818] kern info: [drm] radeon: 2048M of VRAM memory ready
 [     8.444818] kern info: [drm] radeon: 2048M of GTT memory ready.
 [     8.444818] kern info: [drm] Loading verde Microcode
 [     8.454748] kern info: [drm] radeon/VERDE_mc2.bin: 31500 bytes
 [     8.454748] kern info: [drm] Internal thermal controller with fan control
 [     8.464752] kern info: [drm] radeon: dpm initialized
 [     8.464752] kern info: [drm] Found VCE firmware/feedback version
 50.0.1 / 17!
 [     8.464752] kern info: [drm] GART: num cpu pages 524288, num gpu pages
 524288
 [     8.534779] kern info: [drm] PCIE GART of 2048M enabled (table at
 0x00000000002E8000).
 [     8.534779] radeon0: info: WB enabled
 [     8.534779] radeon0: info: fence driver on ring 0 use gpu addr
 0x0000000080000c00 and cpu addr 0x0xffff818b45837c00
 [     8.545446] radeon0: info: fence driver on ring 1 use gpu addr
 0x0000000080000c04 and cpu addr 0x0xffff818b45837c04
 [     8.545446] radeon0: info: fence driver on ring 2 use gpu addr
 0x0000000080000c08 and cpu addr 0x0xffff818b45837c08
 [     8.545446] radeon0: info: fence driver on ring 3 use gpu addr
 0x0000000080000c0c and cpu addr 0x0xffff818b45837c0c
 [     8.545446] radeon0: info: fence driver on ring 4 use gpu addr
 0x0000000080000c10 and cpu addr 0x0xffff818b45837c10
 [     8.545446] radeon0: info: fence driver on ring 5 use gpu addr
 0x0000000000075a18 and cpu addr 0x0xffff98025a9c5a18
 [     8.564790] radeon0: info: fence driver on ring 6 use gpu addr
 0x0000000080000c18 and cpu addr 0x0xffff818b45837c18
 [     8.564790] radeon0: info: fence driver on ring 7 use gpu addr
 0x0000000080000c1c and cpu addr 0x0xffff818b45837c1c
 [     8.564790] kern info: [drm] Supports vblank timestamp caching Rev 2
 (21.10.2013).
 [     8.564790] kern info: [drm] Driver supports precise vblank timestamp
 query.
 [     8.564790] kern info: [drm] Driver supports precise vblank timestamp
 query.
 [     8.575482] radeon0: info: radeon: MSI limited to 32-bit
 [     8.575482] radeon0: interrupting at ioapic0 pin 16 (radeon0)
 [     8.575482] kern info: [drm] radeon: irq initialized.
 [     9.285070] kern error:
 [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_r600.c:2917)r600_ring_test]
 *ERROR* radeon: ring 0 test failed (scratch(0x850C)=0xCAFEDEAD)
 [     9.285070] radeon0: autoconfiguration error: error: disabling GPU
 acceleration
 [     9.465140] kern info: [drm] Radeon Display Connectors
 [     9.465140] kern info: [drm] Connector 0:
 [     9.465140] kern info: [drm]   DP-1
 [     9.465140] kern info: [drm]   HPD4
 [     9.475173] kern info: [drm]   DDC: 0x6540 0x6540 0x6544 0x6544 0x6548
 0x6548 0x654c 0x654c
 [     9.475173] kern info: [drm]   Encoders:
 [     9.475173] kern info: [drm]     DFP1: INTERNAL_UNIPHY2
 [     9.475173] kern info: [drm] Connector 1:
 [     9.475173] kern info: [drm]   DP-2
 [     9.475173] kern info: [drm]   HPD5
 [     9.475173] kern info: [drm]   DDC: 0x6530 0x6530 0x6534 0x6534 0x6538
 0x6538 0x653c 0x653c
 [     9.475173] kern info: [drm]   Encoders:
 [     9.475173] kern info: [drm]     DFP2: INTERNAL_UNIPHY1
 [     9.475173] kern info: [drm] Connector 2:
 [     9.475173] kern info: [drm]   DP-3
 [     9.485572] kern info: [drm]   HPD1
 [     9.485572] kern info: [drm]   DDC: 0x6560 0x6560 0x6564 0x6564 0x6568
 0x6568 0x656c 0x656c
 [     9.485572] kern info: [drm]   Encoders:
 [     9.485572] kern info: [drm]     DFP3: INTERNAL_UNIPHY1
 [     9.485572] kern info: [drm] Connector 3:
 [     9.485572] kern info: [drm]   DP-4
 [     9.485572] kern info: [drm]   HPD2
 [     9.485572] kern info: [drm]   DDC: 0x6580 0x6580 0x6584 0x6584 0x6588
 0x6588 0x658c 0x658c
 [     9.485572] kern info: [drm]   Encoders:
 [     9.485572] kern info: [drm]     DFP4: INTERNAL_UNIPHY
 [     9.495151] kern error:
 [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si_dpm.c:6697)si_dpm_set_power_state]
 *ERROR* si_enable_smc_cac failed
 [     9.555175] radeondrmkmsfb0 at radeon0
 [     9.555175] radeondrmkmsfb0: framebuffer at 0xffff98025abd3000, size
 1920x1080, depth 32, stride 7680
 [     9.735245] kern error:
 [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si_dpm.c:6697)si_dpm_set_power_state]
 *ERROR* si_enable_smc_cac failed
 [     9.745248] warning:
 /usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si.c:6101: Can't
 enable IRQ/MSI because no handler is installed
 [     9.805272] kern error:
 [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si_dpm.c:6697)si_dpm_set_power_state]
 *ERROR* si_enable_smc_cac failed
 [     9.816040] warning:
 /usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si.c:6101: Can't
 enable IRQ/MSI because no handler is installed
 [     9.845287] warning:
 /usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si.c:6101: Can't
 enable IRQ/MSI because no handler is installed
 [     9.875299] warning:
 /usr/src/sys/external/bsd/drm2/dist/drm/radeon/radeon_si.c:6101: Can't
 enable IRQ/MSI because no handler is installed
 [     9.925319] wsdisplay0 at radeondrmkmsfb0 kbdmux 1: console (default,
 vt100 emulation), using wskbd0
 [     9.946331] wsmux1: connecting to wsdisplay0