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# Date Author Comment
932d4a42 07/19/2012 05:56 pm Alexey Kardashevskiy

msi/msix: added API to set MSI message address and data

Added (msi|msix)_set_message() function for whoever might
want to use them.

Currently msi_notify()/msix_notify() write to these vectors to
signal the guest about an interrupt so the correct values have to...
572992ee 06/18/2012 10:21 am Alex Williamson

msix: Switch msix_uninit to return void

It can't fail.

Signed-off-by: Alex Williamson <>
Signed-off-by: Michael S. Tsirkin <>
5a2c2029 06/18/2012 10:21 am Alex Williamson

msix: Allow full specification of MSIX layout

Finally, complete the fully specified interface. msix_add_config()
gets folded into msix_init() because we now have quite a few parameters
to pass and rolling it in let's us error earlier, avoiding the ugly
unwind exit path. msix_mmio_setup() also gets rolled in, just because...
53f94925 06/18/2012 10:21 am Alex Williamson

msix: Add simple BAR allocation MSIX setup functions

msi_init() takes over a BAR without really specifying or allowing
specification of how it does so. Instead, let's split it into
two interfaces, one fully specified, and one trivially easy. This
implements the latter. msix_init_exclusive_bar() takes over...
393a9892 06/18/2012 10:21 am Jan Kiszka

msix: drop unused msix_bar_size, require valid bar_size

No user in sight for msix_bar_size.
bar_size for all users is aligned, let's simply
require this instead of trying to fix up invalid input.

Signed-off-by: Jan Kiszka <>
Signed-off-by: Michael S. Tsirkin <>
118f2c2b 06/18/2012 10:21 am Alex Williamson

msix: fix PCIDevice naming inconsistency

msix.h calls the PCIDevice * parameter "dev" almost everywhere except
the msix_write_config declaration. Fix the inconsistency.

Signed-off-by: Alex Williamson <>
Signed-off-by: Michael S. Tsirkin <>
cb697aaa 05/21/2012 07:22 pm Jan Kiszka

msix: Add msix_nr_vectors_allocated

Analogously to msi_nr_vectors_allocated, add a service for MSI-X. Will
be used by the virtio-pci layer.

Signed-off-by: Jan Kiszka <>
Signed-off-by: Avi Kivity <>
2cdfe53c 05/21/2012 07:22 pm Jan Kiszka

msix: Introduce vector notifiers

Vector notifiers shall be triggered by the MSI/MSI-X core whenever a
relevant configuration change is programmed by the guest. In case of
MSI-X, changes are reported when the effective mask (global &&
per-vector) alters its state. On unmask, the current vector...
60ba3cc2 01/19/2012 01:14 pm Jan Kiszka

msi: Generalize msix_supported to msi_supported

Rename msix_supported to msi_supported and control MSI and MSI-X
activation this way. That was likely to original intention for this
flag, but MSI support came after MSI-X.

Signed-off-by: Jan Kiszka <>
95524ae8 08/08/2011 06:22 pm Avi Kivity

msix: convert to memory API

The msix table is defined as a subregion, to allow for a BAR that
mixes device specific regions with the msix table.

Reviewed-by: Richard Henderson <>
Reviewed-by: Anthony Liguori <>
Signed-off-by: Avi Kivity <>...
b5f28bca 12/01/2009 05:58 pm Michael S. Tsirkin

msix: add helper to unuse all msix entries

will be used by virtio on soft reset

Signed-off-by: Michael S. Tsirkin <>
6e355d90 11/09/2009 04:43 pm Isaku Yamahata

pci: introduce pcibus_t to represent pci bus address/size instead of uint32_t

This patch is preliminary for 64 bit BAR support.
Introduce dedicated type, pcibus_t, to represent pci bus address/size
instead of uint32_t.
Later this type will be changed to uint64_t....
5a1fc5e8 10/05/2009 05:32 pm Michael S. Tsirkin

qemu: clean up target page usage in msix

Since cpu_register_phys_memory does not require size to be a multiple of
target page size, simply make msix page size 0x1000. Do this in msix,
reverting part of 5e520a7d500ec2569d22d80f9ef4272a34cb3c80, as we no
longer have to pass target page around....
c227f099 10/02/2009 12:12 am Anthony Liguori

Revert "Get rid of _t suffix"

In the very least, a change like this requires discussion on the list.

The naming convention is goofy and it causes a massive merge problem. Something
like this must be presented on the list first so people can provide input...
99a0949b 10/01/2009 09:45 pm malc

Get rid of _t suffix

Some not so obvious bits, slirp and Xen were left alone for the time
being.

Signed-off-by: malc <>
5e520a7d 09/20/2009 06:35 pm Blue Swirl

Compile msix only once

Get page size in device init.

Signed-off-by: Blue Swirl <>
02eb84d0 06/24/2009 05:09 pm Michael S. Tsirkin

qemu/pci: MSI-X support functions

Add functions implementing MSI-X support. First user will be virtio-pci.
Note that platform must set a flag to declare MSI supported: this
is a safety measure to avoid breaking platforms which should support
MSI-X but currently lack this in the interrupt controller emulation....