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3770 discussions

[PATCH] virtio: Clear interrupt status register in virtio-blk
by Stefan Hajnoczi 08 Jul '10

08 Jul '10

The VRING_AVAIL_F_NO_INTERRUPT flag is a hint that interrupts should be suppressed. It does not guarantee that interrupts will not be raised. Therefore, make sure to clear the interrupt after each virtio-blk read. This avoids a stuck interrupt interfering with the OS loaded later in the boot process. Signed-off-by: Stefan Hajnoczi <stefanha(a)linux.vnet.ibm.com> --- src/virtio-blk.c | 6 ++++++ src/virtio-pci.h | 4 ++++ 2 files changed, 10 insertions(+), 0 deletions(-) diff --git a/src/virtio-blk.c b/src/virtio-blk.c index 16d9ad8..74af488 100644 --- a/src/virtio-blk.c +++ b/src/virtio-blk.c @@ -62,6 +62,12 @@ virtio_blk_read(struct disk_op_s *op) /* Reclaim virtqueue element */ vring_get_buf(vq, NULL); + + /* Clear interrupt status register. Avoid leaving interrupts stuck if + * VRING_AVAIL_F_NO_INTERRUPT was ignored and interrupts were raised. + */ + vp_get_isr(GET_GLOBAL(vdrive_g->ioaddr)); + return status == VIRTIO_BLK_S_OK ? DISK_RET_SUCCESS : DISK_RET_EBADTRACK; } diff --git a/src/virtio-pci.h b/src/virtio-pci.h index 9da761d..d21d5a5 100644 --- a/src/virtio-pci.h +++ b/src/virtio-pci.h @@ -71,6 +71,10 @@ static inline void vp_set_status(unsigned int ioaddr, u8 status) outb(status, ioaddr + VIRTIO_PCI_STATUS); } +static inline u8 vp_get_isr(unsigned int ioaddr) +{ + return inb(ioaddr + VIRTIO_PCI_ISR); +} static inline void vp_reset(unsigned int ioaddr) { -- 1.7.1

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Re: [SeaBIOS] [PATCH v2 2/2] seabios: pciinit: use pci device initializer helper function.
by Peter Stuge 07 Jul '10

07 Jul '10

Isaku Yamahata wrote: > This patch makes use of pci device initialization helper function > to convert if/switch clause to table driven. > So this makes it easier to add q35 initialization code. I wish that this support could go into coreboot, but I'm not sure how that could be made more attractive.. Any ideas? //Peter

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[PATCH v2 0/2] seabios: pci: pci initialization clean up
by Isaku Yamahata 07 Jul '10

07 Jul '10

Changes from v1 -> v2 - renamed files i440fx -> dev->i440fx. - dropped copyright notice from dev-i440fx.h This patch series cleans up pci device initialization by introducing a helper function. This makes it easier to add more device initialization code cleanly as preparation for q35 chipset. Isaku Yamahata (2): seabios: pci: introduce helper function to initialize a given device. seabios: pciinit: use pci device initializer helper function. Makefile | 2 +- src/dev-i440fx.c | 52 ++++++++++++++++++ src/dev-i440fx.h | 8 +++ src/pci.c | 20 +++++++ src/pci.h | 34 ++++++++++++ src/pciinit.c | 160 +++++++++++++++++++++++++----------------------------- 6 files changed, 188 insertions(+), 88 deletions(-) create mode 100644 src/dev-i440fx.c create mode 100644 src/dev-i440fx.h

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Re: [SeaBIOS] [PATCH 2/2] seabios: pciinit: use pci device initializer helper function.
by Kevin O'Connor 07 Jul '10

07 Jul '10

On Mon, Jul 05, 2010 at 11:22:29AM +0900, Isaku Yamahata wrote: > This patch makes use of pci device initialization helper function > to convert if/switch clause to table driven. > So this makes it easier to add q35 initialization code. Looks okay to me. A couple of minor comments.. > SRC32FLAT=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \ > acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \ > - lzmadecode.c bootsplash.c jpeg.c usb-hub.c paravirt.c > + lzmadecode.c bootsplash.c jpeg.c usb-hub.c paravirt.c i440fx.c The "i440fx.c" is a bit cryptic for someone unfamiliar with the hardware. Maybe "dev-i440fx.c" or something similar? > +++ b/src/i440fx.h > @@ -0,0 +1,17 @@ > +// initialization function which are specific to i440fx chipset > +// > +// Copyright (C) 2008 Kevin O'Connor <kevin(a)koconnor.net> > +// Copyright (C) 2006 Fabrice Bellard > +// > +// Copyright (C) 2010 Isaku Yamahata <yamahata at valinux co jp> > +// Split out from pciinit.c > +// > +// This file may be distributed under the terms of the GNU LGPLv3 license. > +#ifndef __I440FX_H > +#define __I440FX_H > + > +void piix_isa_bridge_init(u16 bdf, void *arg); > +void piix_ide_init(u16 bdf, void *arg); > +void piix4_pm_init(u16 bdf, void *arg); > + > +#endif // __I440FX_H I would prefer not to add long copyright statements on function prototypes. Lets copyright the code, not the headers. -Kevin

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[PATCH 0/2] seabios: pci: pci initialization clean up
by Isaku Yamahata 05 Jul '10

05 Jul '10

This patch series cleans up pci device initialization by introducing a helper function. This makes it easier to add more device initialization code cleanly as preparation for q35 chipset. Isaku Yamahata (2): seabios: pci: introduce helper function to initialize a given device. seabios: pciinit: use pci device initializer helper function. Makefile | 2 +- src/i440fx.c | 52 ++++++++++++++++++ src/i440fx.h | 17 ++++++ src/pci.c | 20 +++++++ src/pci.h | 34 ++++++++++++ src/pciinit.c | 160 ++++++++++++++++++++++++++------------------------------- 6 files changed, 197 insertions(+), 88 deletions(-) create mode 100644 src/i440fx.c create mode 100644 src/i440fx.h

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[PATCH] Bootsplash for SeaBIOS (with coreboot)
by Stefan Reinauer 04 Jul '10

04 Jul '10

See patch -- coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br. Tel.: +49 761 7668825 • Fax: +49 761 7664613 Email: info(a)coresystems.de • http://www.coresystems.de/ Registergericht: Amtsgericht Freiburg • HRB 7656 Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866

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[PATCH v2 0/8] seabios: pci: multi pci bus support
by Isaku Yamahata 04 Jul '10

04 Jul '10

Changes v1 -> v2: - simplified foreachpci_in_bus() - add overlap check during pci bar assignemnt. - use c99 initialization. Patch description: This patch set allows seabios to initialize multi pci bus and 64bit BAR. Currently seabios is able to initialize only pci root bus. However multi pci bus support is wanted because - more pci bus is wanted in qemu for many slots - pci express support is commin in qemu which requires multi pci bus. those patches on Qemu part are under way, though. Isaku Yamahata (8): seabios: pci: introduce foreachpci_in_bus() helper macro. seabios: pciinit: factor out pci bar region allocation logic. seabios: pciinit: make pci memory space assignment 64bit aware. seabios: pciinit: make pci bar assigner preferchable memory aware. seabios: pciinit: factor out bar offset calculation. seabios: pciinit: make bar offset calculation pci bridge aware. seabios: pciinit: pci bridge bus initialization. seabios: pciinit: initialize pci bridge filtering registers. src/config.h | 17 +++ src/pci.h | 10 ++ src/pciinit.c | 324 +++++++++++++++++++++++++++++++++++++++++++++++++-------- 3 files changed, 306 insertions(+), 45 deletions(-)

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Re: [SeaBIOS] [PATCH] KVM vcpu hotplug seabios infrastructure
by Kevin O'Connor 29 Jun '10

29 Jun '10

On Sun, Jun 27, 2010 at 01:28:52PM +0800, Liu, Jinsong wrote: > Kevin, > > Any comments? or any update need I do? The main thing holding this up is the open question around the qemu/seabios acpi interface. I wont be able to look at this for another week. -Kevin

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Re: [SeaBIOS] [PATCH] KVM vcpu hotplug seabios infrastructure
by Liu, Jinsong 27 Jun '10

27 Jun '10

Liu, Jinsong wrote: > Kevin O'Connor wrote: >>> >>> I'm referring to git://git.linuxtogo.org/home/kevin/seabios.git >>> According to http://www.coreboot.org/SeaBIOS, >>> it seems that Keven maintains that repo as the seabios upstream. >>> Kevin when pushing patches, which repository should we refer? >> >> Patches sent to me should be based off of the linuxtogo repo. >> >> -Kevin > > Kevin, > > Attached is updated patch: > 1). rebase my patch referring the linuxtogo repo > git://git.linuxtogo.org/home/kevin/seabios.git; 2). According to > Isaku and Peter's comments, I update Makefile, use 1 rule to build > both acpi_ssdt_15.hex and acpi_ssdt_anycpu.hex, while user don't need > iasl to compile seabios; > > Thanks Isaku, Kevin, and Peter for your comments! > > Regards, > Jinsong Kevin, Any comments? or any update need I do? Thanks, Jinsong

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Re: [SeaBIOS] [PATCH] KVM vcpu hotplug seabios infrastructure
by Isaku Yamahata 23 Jun '10

23 Jun '10

On Mon, Jun 21, 2010 at 02:52:51PM +0800, Liu, Jinsong wrote: > Isaku, > > Thanks for comments! > I didn't fine changeset 12cbb43b9dc8a16f712188cb308a0eb0321f3e20, I pull from git://git.kernel.org/pub/scm/virt/kvm/seabios.git, any misunderstanding? I'm referring to git://git.linuxtogo.org/home/kevin/seabios.git According to http://www.coreboot.org/SeaBIOS, it seems that Keven maintains that repo as the seabios upstream. Kevin when pushing patches, which repository should we refer? > As for makefile rule for acpi-ssdt-15.hex and acpi-ssdt-anycpu.hex, we in fact combine them into 1 generic rule in our old patch, as attached. > However, the old makefile require iasl for user compiling seabios. > Kevin prefer not using iasl, so we update it as new version. Something like the below didn't work? (I just wrote it just to show my idea. I didn't any test.) +src/%.hex: src/acpi-ssdt.dsl src/mk_ssdt.c + @echo "Compiling SSDT for general os which support more cpus" + $(Q)$(CC) -o mk_$* src/mk_ssdt.c + head -n -2 $< > src/$*.dsl.i + ./mk_$* >> src/$*.dsl.i + $(Q)cpp -P src/$*.dsl.i > src/$*.dsl + $(Q)iasl -tc -p $@ src/acpi-ssdt-anycpu.dsl + $(Q)sed -i -e 's/AmlCode/$*/g' $@ + $(Q)rm mk_$* src/$*.dsl.i src/$*.aml src/$*.dsl thanks, > > Thanks, > Jinsong > > Isaku Yamahata wrote: > > Hi Jison. > > > > Can you check the changeset of > > 12cbb43b9dc8a16f712188cb308a0eb0321f3e20 and update Makefile changes? > > > > The rule for acpi-ssdt-15.hex and acpi-ssdt-anycpu.hex seems > > same, so it can be combined into a single generic rule. > > The rules removes the files at the last, but it would be more > > reliable to use Makefile intermediate and let make to remove > > them automatically. > > > > On Sun, Jun 20, 2010 at 11:40:02PM +0800, Liu, Jinsong wrote: > >> Kevin O'Connor wrote: > >>> On Wed, Jun 16, 2010 at 12:19:24PM +0800, Liu, Jinsong wrote: > >>>> Gleb Natapov wrote: > >>>>> FWIW looks good to me. This patch removes dynamic creation of > >>>>> Processor scope and supports only 15/255 cpus configuration, but > >>>>> given that new code is much more complex that old one I don't see > >>>>> other possibilities (unless we'll add aml compiler to seabios > >>>>> runtime). > >>>>> > >> > >>> > >>> I'm okay with the approach (two SSDTs selected by cpu count). The > >>> build changes don't look right (15.c is too cryptic). However, more > >>> importantly, I want to see where we end up going with the > >>> qemu/seabios acpi interface discussion before committing this. > >>> > >>> -Kevin > >> > >> > >> Kevin, > >> > >> Thanks for comments! > >> > >> In your last comments, you prefer not to use iasl to compile seabios. > >> Now I update the patch as attached (only need update Makefile): > >> 1. cancel cryptic name like 15.c from Makefile, and we give detailed > >> description for cpu number in new version; > >> 2. user don't need iasl again to compile seabios, except if they > >> want to change dsdt/ssdt itself; > >> > >> The process to apply patch and build in my desktop is: > >> $ git apply kvm-vcpu-hotplug-seabios.patch > >> $ git add src/acpi-ssdt.dsl > >> $ git add src/mk_ssdt.c > >> $ git add src/acpi-ssdt-15.hex > >> $ git add src/acpi-ssdt-anycpu.hex > >> $ git commit -a > >> $ make > >> > >> We test the updated patch, it works OK with linux2.6.32 hot-add and > >> hot-remove. > >> > >> Thanks, > >> Jinsong > > > >> _______________________________________________ > >> SeaBIOS mailing list > >> SeaBIOS(a)seabios.org > >> http://www.seabios.org/mailman/listinfo/seabios > -- yamahata

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