Re: FreeBSD 13.2 installer does not see AHCI devices on aarch64/sbsa-ref and x86-64/q35

[Niklas Cassel]

Hello Marcin,

I will have a look at this.


Kind regards,
Niklas

On 26 September 2023 13:23:46 CEST, Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org> wrote:

I work on SBSA Reference Platform (sbsa-ref) at Linaro. And yesterday I
wanted to check how non-Linux operating systems work on sbsa-ref machine.

One of them was FreeBSD 13.2 - the latest one. Fetched bootonly ISO
image [1] and booted system.

1. https://download.freebsd.org/releases/arm64/aarch64/ISO-IMAGES/13.2/FreeBSD-13.2-RELEASE-arm64-aarch64-bootonly.iso

QEMU command line arguments:

-drive if=ide,file=disks/FreeBSD-13.2-RELEASE-arm64-aarch64-bootonly.iso,media=cdrom
-machine sbsa-ref
-m 4096
-smp 2
-cpu neoverse-n1
-drive file=fat:rw:/home/marcin/devel/linaro/sbsa-qemu/sbsa-ref-status/disks/virtual/,format=raw
-drive format=raw,file=/home/marcin/devel/linaro/sbsa-qemu/sbsa-ref-status/disks/full-debian.hddimg
-watchdog-action none
-no-reboot
-monitor telnet::45454,server,nowait
-serial stdio
-device igb
-nographic
-drive if=pflash,file=SBSA_FLASH0.fd,format=raw
-drive if=pflash,file=SBSA_FLASH1.fd,format=raw


Firmware loaded FreeBSD loader, kernel booted but it does not see
any AHCI devices:

ahci0: <AHCI SATA controller> iomem 0x60100000-0x6010ffff irq 1 on acpi0
ahci0: AHCI v1.00 with 6 1.5Gbps ports, Port Multiplier not supported
ahci0: Caps: 64bit NCQ 1.5Gbps 32cmd 6ports
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich0: Caps:
[..]
ahcich0: AHCI reset...
ahcich0: SATA connect time=0us status=00000113
ahcich0: AHCI reset: device found
ahcich0: AHCI reset: device ready after 0ms
ahcich1: AHCI reset...
ahcich1: SATA connect time=0us status=00000113
ahcich1: AHCI reset: device found
ahcich1: AHCI reset: device ready after 0ms
ahcich2: AHCI reset...
ahcich2: SATA connect time=0us status=00000113
ahcich2: AHCI reset: device found
ahcich2: AHCI reset: device ready after 0ms
[..]
Trying to mount root from cd9660:/dev/iso9660/13_2_RELEASE_AARCH64_BO [ro]...
Root mount waiting for: CAM
[..]
Root mount waiting for: CAM
ahcich0: Poll timeout on slot 1 port 0
ahcich0: is 00000000 cs 00000002 ss 00000000 rs 00000002 tfd 170 serr 00000000 cmd 0000c017

And finally it gives up.


v8.1.1 was bad, v8.0.5 was bad so I did git bisecting.
Which gave me this commit:

commit 7bcd32128b227cee1fb39ff242d486ed9fff7648
Author: Niklas Cassel <niklas.cassel@wdc.com>
Date:   Fri Jun 9 16:08:40 2023 +0200

    hw/ide/ahci: simplify and document PxCI handling

    The AHCI spec states that:
    For NCQ, PxCI is cleared on command queued successfully.



I built x86_64-softmmu target and checked both "pc" and "q35"
machines.

./build/x86_64-softmmu/qemu-system-x86_64
-cdrom FreeBSD-13.2-RELEASE-amd64-bootonly.iso
-m 2048 -serial stdio  -monitor telnet::45454,server,nowait

PC target ("-M pc") booted fine. But Q35 ("-M q35") failed
similar way as aarch64/sbsa-ref did:

ahci0: <Intel ICH9 AHCI SATA controller> port 0xc060-0xc07f mem 0xfebd5000-0xfebd5fff irq 16 at device 31.2 on pci0
ahci0: attempting to allocate 1 MSI vectors (1 supported)
msi: routing MSI IRQ 26 to local APIC 0 vector 52
ahci0: using IRQ 26 for MSI
ahci0: AHCI v1.00 with 6 1.5Gbps ports, Port Multiplier not supported
ahci0: Caps: 64bit NCQ 1.5Gbps 32cmd 6ports
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich0: Caps:
ahcich1: <AHCI channel> at channel 1 on ahci0
ahcich1: Caps:
ahcich2: <AHCI channel> at channel 2 on ahci0
ahcich2: Caps:
[..]
ahcich2: AHCI reset...
ahcich2: SATA connect time=0us status=00000113
ahcich2: AHCI reset: device found
ahcich2: AHCI reset: device ready after 0ms
[..]
Trying to mount root from cd9660:/dev/iso9660/13_2_RELEASE_AMD64_BO [ro]...
ahcich2: Poll timeout on slot 1 port 0
ahcich2: is 00000000 cs 00000002 ss 00000000 rs 00000002 tfd 170 serr 00000000 cmd 0000c017
(aprobe2:ahcich2:0:0:0): SOFT_RESET. ACB: 00 00 00 00 00 00 00 00 00 00 00 00
(aprobe2:ahcich2:0:0:0): CAM status: Command timeout
(aprobe2:ahcich2:0:0:0): Error 5, Retries exhausted
ahcich2: Poll timeout on slot 2 port 0
ahcich2: is 00000000 cs 00000006 ss 00000000 rs 00000004 tfd 170 serr 00000000 cmd 0000c017
(aprobe2:ahcich2:0:0:0): SOFT_RESET. ACB: 00 00 00 00 00 00 00 00 00 00 00 00
(aprobe2:ahcich2:0:0:0): CAM status: Command timeout
(aprobe2:ahcich2:0:0:0): Error 5, Retries exhausted
mountroot: waiting for device /dev/iso9660/13_2_RELEASE_AMD64_BO...
Mounting from cd9660:/dev/iso9660/13_2_RELEASE_AMD64_BO failed with error 19.

Same thing happens with current qemu HEAD:

commit 494a6a2cf7f775d2c20fd6df9601e30606cc2014
Merge: 29578f5757 b821109583
Author: Stefan Hajnoczi <stefanha@redhat.com>
Date:   Mon Sep 25 10:10:30 2023 -0400

    Merge tag 'pull-request-2023-09-25' of https://gitlab.com/thuth/qemu into staging


Any ideas?