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port-macppc/56091: zscninit() is never called on G5



>Number:         56091
>Category:       port-macppc
>Synopsis:       zscninit() is never called on G5
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-macppc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Apr 02 09:15:00 +0000 2021
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.81
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD big-apple.aprisoft.de 9.99.81 NetBSD 9.99.81 (POWERMAC_G5.MP) #12: Fri Apr 2 08:55:57 CEST 2021 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/macppc/compile/POWERMAC_G5.MP macppc
Architecture: powerpc
Machine: macppc
>Description:

Serial console on my G5 mac does not work (yes, I am strange - but I got
a very nice Stealth serial port for this new toy and will usually run the
machine headless).

Problem is that zs_conschannel is -1 at zs0 attach time, so its 
ZS_HWFLAG_CONSOLE is never set. This used to work fine in my G4 quicksilver.

I tried to add panics/debugger calls in zscnprobe/zscninit but neither
seem to be ever called.

The problem is in ofwoea_cnprobe(), where we abort for G5 macs:

#ifdef PMAC_G5
                /* The MMU hasn't been initialized yet, use failsafe for now */
                extern struct consdev failsafe_cons;
                selected_serial_consdev = &failsafe_cons;
                aprint_verbose("Early G5 console selected\n");
                return;
#endif /* PMAC_G5 */

right before the magic to make zs console work:

#if (NZSTTY > 0) && !defined(MAMBO)
                OF_getprop(console_node, "name", name, sizeof(name));
                if (strcmp(name, "ch-a") == 0 || strcmp(name, "ch-b") == 0) {
                        selected_serial_consdev = &consdev_zs;
                }
                return;
#endif /* NZTTY */ 

... and here I need more background info form ppc mmu experts ;-)

Forcing zs console on works a tiny bit, but makes the machine die early
once all cpus are up and interrupts enabled.



Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 9.99.81 (POWERMAC_G5.MP) #12: Fri Apr  2 08:55:57 CEST 2021
	martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/macppc/compile/POWERMAC_G5.MP
total memory = 2048 MB
oea_startup: failed to allocate DEAD ZONE: error=12
avail memory = 1960 MB
timecounter: Timecounters tick every 10.000 msec
found openpic PIC at 80040000
OpenPIC Version 1.2: Supports 4 CPUs and 120 interrupt sources.
bootpath: /ht@0,f2000000/pci@6/ethernet@f:192.168.111.42,nbsd.g5
mainbus0 (root)
cpu0 at mainbus0: 970FX (Revision 3.0), ID 0 (primary)
cpu0: HID0 0x513081<NAP,DPM,NHR,TBCTRL,EXTBEN,ENATTN> 0x80000000<EMCP>, powersave: 1
cpu1 at mainbus0: 970FX (Revision 3.0), ID 1
cpu1: HID0 0x513081<NAP,DPM,NHR,TBCTRL,EXTBEN,ENATTN> 0x80000000<EMCP>, powersave: 1
memory0 at mainbus0: len=1024
spdmem0 at memory0
spdmem0: DDR SDRAM, no parity or ECC, 1GB, 400MHz (PC-3200)
spdmem0: 13 rows, 11 cols, 2 ranks, 4 banks/chip, 5.0ns cycle time
spdmem0: tAA-tRCD-tRP-tRAS: 2-3-3-8
spdmem0: voltage SSTL 2.5V, refresh time 7.8us (self-refreshing)
spdmem1 at memory0
spdmem1: DDR SDRAM, no parity or ECC, 1GB, 400MHz (PC-3200)
spdmem1: 13 rows, 11 cols, 2 ranks, 4 banks/chip, 5.0ns cycle time
spdmem1: tAA-tRCD-tRP-tRAS: 2-3-3-8
spdmem1: voltage SSTL 2.5V, refresh time 7.8us (self-refreshing)
spdmem2 at memory0
spdmem2: DDR SDRAM, no parity or ECC, 1GB, 400MHz (PC-3200)
spdmem2: 13 rows, 11 cols, 2 ranks, 4 banks/chip, 5.0ns cycle time
spdmem2: tAA-tRCD-tRP-tRAS: 2-3-3-8
spdmem2: voltage SSTL 2.5V, refresh time 7.8us (self-refreshing)
spdmem3 at memory0
spdmem3: DDR SDRAM, no parity or ECC, 1GB, 400MHz (PC-3200)
spdmem3: 13 rows, 11 cols, 2 ranks, 4 banks/chip, 5.0ns cycle time
spdmem3: tAA-tRCD-tRP-tRAS: 2-3-3-8
spdmem3: voltage SSTL 2.5V, refresh time 7.8us (self-refreshing)
spdmem4 at memory0
spdmem4: DDR SDRAM, no parity or ECC, 1GB, 400MHz (PC-3200)
spdmem4: 13 rows, 11 cols, 2 ranks, 4 banks/chip, 5.0ns cycle time
spdmem4: tAA-tRCD-tRP-tRAS: 2-3-3-8
spdmem4: voltage SSTL 2.5V, refresh time 7.8us (self-refreshing)
spdmem5 at memory0
spdmem5: DDR SDRAM, no parity or ECC, 1GB, 400MHz (PC-3200)
spdmem5: 13 rows, 11 cols, 2 ranks, 4 banks/chip, 5.0ns cycle time
spdmem5: tAA-tRCD-tRP-tRAS: 2-3-3-8
spdmem5: voltage SSTL 2.5V, refresh time 7.8us (self-refreshing)
spdmem6 at memory0
spdmem6: DDR SDRAM, no parity or ECC, 1GB, 400MHz (PC-3200)
spdmem6: 13 rows, 11 cols, 2 ranks, 4 banks/chip, 5.0ns cycle time
spdmem6: tAA-tRCD-tRP-tRAS: 2-3-3-8
spdmem6: voltage SSTL 2.5V, refresh time 7.8us (self-refreshing)
spdmem7 at memory0
spdmem7: DDR SDRAM, no parity or ECC, 1GB, 400MHz (PC-3200)
spdmem7: 13 rows, 11 cols, 2 ranks, 4 banks/chip, 5.0ns cycle time
spdmem7: tAA-tRCD-tRP-tRAS: 2-3-3-8
spdmem7: voltage SSTL 2.5V, refresh time 7.8us (self-refreshing)
uni_n0 at mainbus0 address 0xf8000000
uni_n0: found EEPROM data for CPU 0
uni_n0: found EEPROM data for CPU 1
ki2c0 at uni_n0 address 0xf8001000
iic0 at ki2c0: I2C bus
i2c-hwclock at iic0 addr 0x6a not configured
lmtemp0 at iic0 addr 0x4a: temp-monitor DS75 Temperature Sensor
admtemp0 at iic0 addr 0x4c: MAX6690 temperature sensor: id. 0x4d, rev. 0x09
dstemp0 at iic0 addr 0x4b: DS1361
fcu0 at iic0 addr 0xaf: Fan Control Unit
i2c-cpu-voltage at iic0 addr 0x18 not configured
adadc0 at iic0 addr 0x2c: AD7417
cpuid at iic0 addr 0x50 not configured
i2c-cpu-voltage at iic0 addr 0x19 not configured
adadc1 at iic0 addr 0x2d: AD7417
cpuid at iic0 addr 0x51 not configured
cereal at iic0 addr 0xe0 not configured
dart at uni_n0 address 0xf8033000 not configured
mpic at uni_n0 address 0xf8040000 not configured
uninorth0 at mainbus0
pci0 at uninorth0 bus 0
pci0: i/o space, memory space enabled
pchb0 at pci0 dev 11 function 0
pchb0: vendor 106b product 0059 (rev. 0x00)
radeonfb0 at pci0 dev 16 function 0: vendor 1002 product 4150 (rev. 0x00)
trying to read disabled BIOS...
radeonfb0: No video BIOS, using default clocks
radeonfb0: refclk = 27.000 MHz, refdiv = 12 minpll = 125000, maxpll = 400000
radeonfb0: 64 MB aperture at 0xb0000000, 64 KB registers at 0xa0000000
radeonfb0: display 0: initial virtual resolution 1920x1080 at 8 bpp
radeonfb0: using 32 MB per display
radeonfb0: port 0: physical 1920x1080 60Hz
radeonfb0: port 1: physical 1920x1080 60Hz
wsdisplay0 at radeonfb0 kbdmux 1: console (fb, vt100 emulation)
wsmux1: connecting to wsdisplay0
drm at radeonfb0 not configured
ibmcpc0 at mainbus0
Mapping in config space @ pa 0xf2000000, size: 0x02800000
pci1 at ibmcpc0 bus 6
pci1: i/o space, memory space enabled
siisata0 at pci1 dev 3 function 0: vendor 1095 product 3124 (rev. 0x02)
siisata0: interrupting at irq 53
siisata0: SiI3124, 3.0Gb/s
siisata0: 64-bit 100MHz PCI-X
atabus0 at siisata0 channel 0
atabus1 at siisata0 channel 1
atabus2 at siisata0 channel 2
atabus3 at siisata0 channel 3
pci2 at ibmcpc0 bus 7
pci2: i/o space, memory space enabled
pci3 at ibmcpc0 bus 1
pci3: i/o space, memory space enabled
obio0 at pci3 dev 7 function 0: addr 0x80000000
mpic at obio0 offset 0x40000 not configured
zsc0 at obio0 irq 22,23
zstty0 at zsc0 channel 0
zstty1 at zsc0 channel 1
ki2c1 at obio0
iic1 at ki2c1: I2C bus
cereal at iic1 addr 0xe0 not configured
deq0 at iic1 addr 0x35 Audio Codec (tas3004)
snapper0 at obio0 offset 0x10000: irq 30,1,2
pmu0 at obio0 offset 0x16000 irq 25:  rev. 12
pmu0: initializing IIC bus
iic2 at pmu0: I2C bus
pmu0: initializing RTC
pmu0: power-mgt not configured
fans at obio0 offset 0x4c not configured
model PowerMac7,3
snapper0: codec: TAS3004
audio0 at snapper0: playback, capture, full duplex
audio0: slinear_be:16 -> slinear_be:16 2ch 48000Hz, blk 12288 bytes (64ms) for playback
audio0: slinear_be:16 <- slinear_be:16 2ch 48000Hz, blk 12288 bytes (64ms) for recording
spkr0 at audio0: PC Speaker (synthesized)
wsbell0 at spkr0 mux 1
ohci0 at pci3 dev 8 function 0: vendor 106b product 0040 (rev. 0x00)
ohci0: interrupting at irq 27
ohci0: OHCI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
ohci1 at pci3 dev 9 function 0: vendor 106b product 0040 (rev. 0x00)
ohci1: interrupting at irq 28
ohci1: OHCI version 1.0, legacy support
usb1 at ohci1: USB revision 1.0
pci4 at ibmcpc0 bus 2
pci4: i/o space, memory space enabled
vendor 14e4 product 4320 (miscellaneous network, revision 0x03) at pci4 dev 1 function 0 not configured
ohci2 at pci4 dev 11 function 0: vendor 1033 product 0035 (rev. 0x43)
ohci2: interrupting at irq 63
ohci2: OHCI version 1.0
usb2 at ohci2: USB revision 1.0
ohci3 at pci4 dev 11 function 1: vendor 1033 product 0035 (rev. 0x43)
ohci3: interrupting at irq 63
ohci3: OHCI version 1.0
usb3 at ohci3: USB revision 1.0
ehci0 at pci4 dev 11 function 2: vendor 1033 product 00e0 (rev. 0x04)
ehci0: interrupting at irq 63
ehci0: EHCI version 1.0
ehci0: 2 companion controllers, 3 ports each: ohci2 ohci3
usb4 at ehci0: USB revision 2.0
pci5 at ibmcpc0 bus 3
pci5: i/o space, memory space enabled
wdc0 at pci5 dev 13 function 0: interrupting at irq 39
atabus4 at wdc0 channel 0
vendor 106b product 0042 (IEEE1394 serial bus, OpenHCI) at pci5 dev 14 function 0 not configured
pci6 at ibmcpc0 bus 4
pci6: i/o space, memory space enabled
gem0 at pci6 dev 15 function 0: vendor 106b product 004c (rev. 0x00)
gem0: interrupting at irq 41
brgphy0 at gem0 phy 1: BCM54K2 1000BASE-T media interface, rev. 0
brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
gem0: Ethernet address 00:11:24:72:b5:b8, 10KB RX fifo, 4KB TX fifo
pci7 at ibmcpc0 bus 5
pci7: i/o space, memory space enabled
svwsata0 at pci7 dev 12 function 0: ServerWorks K2 SATA Controller (rev. 0x00)
svwsata0: bus-master DMA support present
svwsata0: using irq 0 for native-PCI interrupt
svwsata0: primary channel wired to native-PCI mode
atabus5 at svwsata0 channel 0
svwsata0: secondary channel wired to native-PCI mode
atabus6 at svwsata0 channel 1
svwsata0: secondary channel wired to compatibility mode
atabus7 at svwsata0 channel 2
svwsata0: secondary channel configured to compatibility mode
atabus8 at svwsata0 channel 3
svwsata1 at pci7 dev 12 function 1: ServerWorks K2 SATA Controller (rev. 0x00)

vmmask 397e0000 schedmask 3ffe0000 highmask 7ffe0000
entropy: WARNING: extracting entropy too early
timecounter: Timecounter "mftb" frequency 33333333 Hz quality 100
timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
cpu1 started
uhub0 at usb0: NetBSD (0x0000) OHCI root hub (0x0000), class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhub1 at usb1: NetBSD (0x0000) OHCI root hub (0x0000), class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhub2 at usb2: NetBSD (0x0000) OHCI root hub (0x0000), class 9/0, rev 1.00/1.00, addr 1
uhub2: 3 ports with 3 removable, self powered
uhub3 at usb3: NetBSD (0x0000) OHCI root hub (0x0000), class 9/0, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
uhub4 at usb4: NetBSD (0x0000) EHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
uhub4: 5 ports with 5 removable, self powered
aes: BearSSL aes_ct
aes_ccm: self-test passed
chacha: Portable C ChaCha
blake2s: self-test passed
siisata0 port 0: device present, speed: 3.0Gb/s
wd0 at atabus0 drive 0
wd0: <Samsung SSD 860 PRO 512GB>
wd0: drive supports 1-sector PIO transfers, LBA48 addressing
wd0: 476 GB, 992277 cyl, 16 head, 63 sec, 512 bytes/sect x 1000215216 sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133), WRITE DMA FUA, NCQ (32 tags)
wd0(siisata0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA), NCQ (30 tags)
svwsata0 port 1: device present, speed: 1.5Gb/s
ehci0: handing over low speed device on port 1 to ohci2
svwsata0 port 3: PHY offline
atapibus0 at atabus4: 2 targets
cd0 at atapibus0 drive 0: <SONY DVD RW DW-U21A, , AADB> cdrom removable
svwsata0 port 0: PHY offline
svwsata0 port 2: PHY offline
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66)
cd0(wdc0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66) (using DMA)
wd1 at atabus6 drive 0
wd1: <Intenso SSD SATAIII>
wd1: drive supports 1-sector PIO transfers, LBA48 addressing
wd1: 111 GB, 232581 cyl, 16 head, 63 sec, 512 bytes/sect x 234441648 sectors
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133), WRITE DMA FUA, NCQ (32 tags)
wd1(svwsata0:1:0): using PIO mode 4, Ultra-DMA mode 6 (Ultra/133) (using DMA), WRITE DMA FUA EXT
WARNING: 2 errors while detecting hardware; check system log.
boot device: gem0
root on gem0
nfs_boot: trying DHCP/BOOTP
uhidev0 at uhub2 port 1 configuration 1 interface 0
uhidev0: Dell (0x413c) Dell USB Keyboard (0x2105), rev 1.10/3.52, addr 2, iclass 3/1
ukbd0 at uhidev0
wskbd0 at ukbd0: console keyboard, using wsdisplay0
nfs_boot: DHCP next-server: 192.168.111.42
nfs_boot: my_domain=aprisoft.de
nfs_boot: my_addr=192.168.111.67
nfs_boot: my_mask=255.255.255.0
nfs_boot: gateway=192.168.111.42
root on 192.168.111.42:/nelly/g5
root file system type: nfs
kern.module.path=/stand/macppc/9.99.81/modules

>How-To-Repeat:
s/a

>Fix:
n/a



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