Commit Graph

16 Commits

Author SHA1 Message Date
Michael S. Tsirkin cd7898f714 pci_bridge: upper 32 bit are long registers
Use pci_set_long for accesses.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-03-16 00:41:39 +02:00
Michael S. Tsirkin 8a3d80faf7 pci_bridge: user-friendly default bus name
For a pci bridge device, if we don't override
the name with custom code, the bus will be addressed as
<id>.0, where id is the id specified by the user.

Since PCI Bridge devices have a single bus each, we don't need
the index: address the bus using the parent device name.
This is better since this way users don't care about
our internal bus/device distinctions.

As far as I could see, we only have built-in
bridges at this point which always override the
name. So this change will only affect ioh3420.c.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-03-15 17:04:58 +02:00
Michael S. Tsirkin 95be119603 pci_bridge: fix status: do not override cap bit 2012-03-15 17:04:58 +02:00
Anthony Liguori 40021f0888 pci: convert to QEMU Object Model
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27 10:50:50 -06:00
Blue Swirl 52ce6f05c1 pci_bridge: fix typo
Reviewed-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-10-23 14:05:46 +00:00
Michael S. Tsirkin 336411cafd pci_bridge: simplify memory regions some more
replace alloc/free with struct members.
todo: smash with initial implementation after
testing.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-09-20 17:46:12 +03:00
Michael S. Tsirkin 7df32ca08a pci: implement bridge filtering
Support bridge filtering on top of the memory
API as suggested by Avi Kivity:

Create a memory region for the bridge's address space.  This region is
not directly added to system_memory or its descendants.  Devices under
the bridge see this region as its pci_address_space().  The region is
as large as the entire address space - it does not take into account
any windows.

For each of the three windows (pref, non-pref, vga), create an alias
with the appropriate start and size.  Map the alias into the bridge's
parent's pci_address_space(), as subregions.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-09-19 21:22:30 +03:00
Wen Congyang 778d179939 pci_bridge: use parent bus's address space
The switch to the new memory API caused the following problem:

The pci device may call pci_register_bar() to use PCI bus's address
space.  But we don't init PCI bus's address space if it is not bus
0.  A crash was reported:
http://lists.gnu.org/archive/html/qemu-devel/2011-08/msg02243.html

More work will be needed to make bridge filtering work correctly
with the memory API.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-09-19 21:22:30 +03:00
Isaku Yamahata a5fce077b1 pci bridge: implement secondary bus reset
Trigger secondary bus reset when secondary bus reset bit
value changes from 0 to 1.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-22 10:00:07 +02:00
Blue Swirl 5afb986917 Introduce range.h
Extract range functions from pci.h. These will be used by later patches
by non-PCI devices. Adjust current users.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
(cherry picked from commit bf1b007123)
2010-10-27 19:01:59 +02:00
Isaku Yamahata 0208def1ca pci/bridge: fix pci_bridge_reset()
The lower bits of base/limit registers is RO and shouldn't be zero
cleared on reset. This patch fixes it.
In fact, the default value of base/limit registers aren't specified
in the spec. And some bridges disable forwarding on reset instead of
zeroing base/limit registers.
So introduce one function to disable bridge forwarding so that
such bridges can use it. It will be used later.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-10-20 12:05:10 +02:00
Isaku Yamahata f4c817e000 pci bridge: add helper function for ssvid capability.
helper function to add ssvid capability.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-09-07 20:10:04 +03:00
Isaku Yamahata 68f799944b pci_bridge: introduce pci bridge library.
introduce pci bridge library.
convert apb bridge and dec p2p bridge to use new pci bridge library.
save/restore is supported as a side effect.
This is also preparation for pci express root/upstream/downstream port.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-09-07 20:01:27 +03:00
Isaku Yamahata 51a92333f8 pci_bridge: clean up: remove pci_{register, unregister}_secondary_bus()
Remove pci_{register, unregister}_secondary_bus() by open code.
They are old stype API and aren't used any more by others. So eliminate it.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-07-22 12:21:37 +03:00
Isaku Yamahata 7e98e3af4e pci_bridge: rename PCIBridge::bus -> PCIBridge::sec_bus.
To avoid confusion of primary bus with secondary bus,
rename PCIBridge::bus to PCIBridge::sec_bus.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-07-22 12:21:34 +03:00
Isaku Yamahata 783753fd53 pci/bridge: split out pci bridge code into pci_bridge.c from pci.c
Move pci bridge related code into pci_bridge.c from pci.c
for further enhancement. pci.c is big enough now, so split it out.
No code change but exporting some accesser functions.

In fact, few pci bridge functions stays in pci.c.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-07-22 12:21:30 +03:00