From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
To: Guenter Roeck <linux@roeck-us.net>,
QEMU Developers <qemu-devel@nongnu.org>
Cc: "Philippe Mathieu-Daudé" <f4bug@amsat.org>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: Problems with irq mapping in qemu v5.2
Date: Wed, 23 Dec 2020 10:24:43 +0000 [thread overview]
Message-ID: <ee005fd0-1eb0-2bfd-6be3-10f616cc7aad@ilande.co.uk> (raw)
In-Reply-To: <5849da05-a063-cd56-7709-c4760c8aa71f@roeck-us.net>
On 22/12/2020 21:23, Guenter Roeck wrote:
(Added jiaxun.yang@flygoat.com as CC)
>>> I don't really have a good solution for pci_bonito_map_irq(). It may not
>>> matter much - I have not been able to boot fuloong_2e since qemu v4.0,
>>> and afaics that is the only platform using it. Maybe it is just completely
>>> broken ?
>>
>> It looks like you want this patchset posted last week: https://patchew.org/QEMU/20201216022513.89451-1-jiaxun.yang@flygoat.com/ (specifically: https://patchew.org/QEMU/20201216022513.89451-1-jiaxun.yang@flygoat.com/20201216022513.89451-4-jiaxun.yang@flygoat.com/). Zoltan was working on the VIA southbridge wiring at the start of the year and provided me a test case that would boot Linux on the fulong2e machine, so at that point in time it wasn't completely broken.
>>
> Those patches don't help for my tests. Problem is that I try to boot from ide drive.
>
> qemu-system-mips64el -M fulong2e \
> -kernel vmlinux -no-reboot -m 256 -snapshot \
> -drive file=rootfs.mipsel.ext3,format=raw,if=ide \
> -vga none -nographic \
> --append "root=/dev/sda console=ttyS0"
> -serial stdio -monitor none
>
> This works just fine with qemu v3.1. With qemu v5.2 (after applying the
> fuloong patch series), I get:
>
> VFS: Cannot open root device "sda" or unknown-block(0,0): error -6
>
> This used to work up to qemu v3.1. Since qemu v4.0, there has been a variety
> of failures. Common denominator is that the ide drive is no longer recognized,
> presumably due to related changes in the via and/or pci code between v3.1
> and v4.0.
>
> Difference in log messages:
>
> v3.1:
>
> pci 0000:00:05.1: [Firmware Bug]: reg 0x10: invalid BAR (can't size)
> pci 0000:00:05.1: [Firmware Bug]: reg 0x14: invalid BAR (can't size)
> pci 0000:00:05.1: [Firmware Bug]: reg 0x18: invalid BAR (can't size)
> pci 0000:00:05.1: reg 0x1c: [mem 0x100000370-0x10000037f 64bit]
> ...
> pata_via 0000:00:05.1: BMDMA: BAR4 is zero, falling back to PIO
> ata1: PATA max PIO4 cmd 0x1f0 ctl 0x3f6 irq 14
> ata2: PATA max PIO4 cmd 0x170 ctl 0x376 irq 15
> ata1.00: ATA-7: QEMU HARDDISK, 2.5+, max UDMA/100
> ...
>
> ----
>
> v5.2:
>
> pci 0000:00:05.1: reg 0x10: [io 0x0000-0x0007]
> pci 0000:00:05.1: reg 0x14: [io 0x0000-0x0003]
> pci 0000:00:05.1: reg 0x18: [io 0x0000-0x0007]
> pci 0000:00:05.1: reg 0x1c: [io 0x0000-0x0003]
> pci 0000:00:05.1: reg 0x20: [io 0x0000-0x000f]
> pci 0000:00:05.1: BAR 4: assigned [io 0x4440-0x444f]
> ...
> ata1: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x4440 irq 14
> ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x4448 irq 15
> [and nothing else]
>
> Guenter
Jiaxun: Guenter is reporting that even with your latest series at
https://lists.gnu.org/archive/html/qemu-devel/2020-12/msg04293.html he is unable to
boot from an IDE drive. Your cover letter suggests that it should be possible to boot
the Debian installer: can you provide any insight here?
ATB,
Mark.
next prev parent reply other threads:[~2020-12-23 10:26 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-22 16:16 Problems with irq mapping in qemu v5.2 Guenter Roeck
2020-12-22 17:55 ` BALATON Zoltan via
2020-12-22 22:23 ` BALATON Zoltan via
2020-12-22 23:12 ` Guenter Roeck
2020-12-23 10:31 ` Mark Cave-Ayland
2020-12-23 13:39 ` BALATON Zoltan via
2020-12-22 18:23 ` Mark Cave-Ayland
2020-12-22 21:23 ` Guenter Roeck
2020-12-22 22:57 ` BALATON Zoltan via
2020-12-23 1:01 ` Guenter Roeck
2020-12-23 13:35 ` BALATON Zoltan via
2020-12-23 10:17 ` Mark Cave-Ayland
2020-12-23 10:24 ` Mark Cave-Ayland [this message]
2020-12-23 13:17 ` BALATON Zoltan via
2020-12-23 18:15 ` Mark Cave-Ayland
2020-12-25 23:43 ` BALATON Zoltan via
2020-12-31 15:34 ` Peter Maydell
2020-12-23 15:21 ` Philippe Mathieu-Daudé
2020-12-23 16:09 ` Mark Cave-Ayland
2020-12-23 17:01 ` Guenter Roeck
2020-12-23 18:01 ` Mark Cave-Ayland
2020-12-23 20:20 ` BALATON Zoltan via
2020-12-23 21:01 ` Guenter Roeck
2020-12-23 22:05 ` Mark Cave-Ayland
2020-12-23 22:47 ` Guenter Roeck
2020-12-23 23:05 ` Philippe Mathieu-Daudé
2020-12-23 23:56 ` BALATON Zoltan via
2020-12-24 1:34 ` BALATON Zoltan via
2020-12-24 2:29 ` Jiaxun Yang
2020-12-24 5:32 ` Guenter Roeck
2020-12-24 8:11 ` BALATON Zoltan via
2020-12-24 10:50 ` Philippe Mathieu-Daudé
2020-12-24 17:09 ` BALATON Zoltan via
2020-12-28 19:26 ` Mark Cave-Ayland
2020-12-28 21:18 ` BALATON Zoltan via
2020-12-23 19:49 ` BALATON Zoltan via
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