Some (hacky) devices that have a back-channel to read this
address back outside the normal configuration mechanisms, such
as VMware svga.
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Allow registering a BAR using a MemoryRegion.  Once all users are converted,
pci_register_bar() and pci_register_bar_simple() will be removed.
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This is now done sloppily, via get_system_memory().  Eventually callers
will be converted to stop using that.
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

vender id/device id... in configuration space are read-only registers
which are commonly defined for all pci devices.
So move those initialization into common place.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Replace writeable -> writable
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

This is similar to pci_register_bar(), but automatically registers a single
memory region spanning the entire BAR.
Signed-off-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Introduce accessor function to know INTx levels.
It will be used later by q35.
Although piix_pci tracks the intx line levels, it can be eliminated
by this helper function.

Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

use uint8_t for devfn_min instead of int.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

(slot, fn) pair is somewhat confusing because of ARI.
So use devfn for pci_find_device() instead of (slot, fn).
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Introduce symbol PCI_SLOT_MAX for the # of slots,
and replace the magic, 256.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

deassert intx on device reset.
So far pci_device_reset() is used for system reset.
In that case, interrupt controller is reset at the same time so that
all irq is are deasserted.
But now pci bus reset/flr is supported, and in that case irq needs to be
disabled explicitly.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

This patch adds a field to PCIDeviceInfo to tag devices as being
not hotpluggable.  Any attempt to plug-in or -out such a device
will throw an error.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

This patch introduce a helper function to get PCIDevice from qdev id.
This function will be used later.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Support flr: trigger device reset on flr config write.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

We need a PCI ID for our new AHCI adapter. I just picked an ICH-9
because that's the one in the Q35 chipset.

This patch adds a PCI ID define for an ICH-9 AHCI adapter.
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

msi depends on pci but pci should not depend on msi.
The only dependency we have is a recent addition
of pci_msi_ functions, IMO they add little enough to
open-code in the small number of users.

Follow-up patches add more cleanups.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>

pcie aer needs SERR bit to be writable, and the PCI spec requires
this as well.  For compatibility, introduce compat global property
command_serr_enable and make this bit readonly for a pre 0.14 pc
machine.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

This patch fixes hot unplug of cold plugged devices
(those present at system start), which got broken by
5beb8ad5 .
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Acked-by: NCam Macdonell <cam@cs.ualberta.ca>
Tested-by: NCam Macdonell <cam@cs.ualberta.ca>
Reported-by: Cam Macdonell <cam@cs.ualberta.ca>.

This patch fixes hot unplug of cold plugged devices
(those present at system start), which got broken by
5beb8ad5 .
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Acked-by: NCam Macdonell <cam@cs.ualberta.ca>
Tested-by: NCam Macdonell <cam@cs.ualberta.ca>
Reported-by: Cam Macdonell <cam@cs.ualberta.ca>.

This patch implements helper functions for pci express capability
and pci express extended capability allocation.
NOTE: presence detection depends on pci_qdev_init() change.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

implements msi related functions.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

this patch implements helper functions to handle msi-x and msi
uniformly.
They will be used later.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

This patch introduces helper functions to test-and-{clear, set} mask in configuration
space. pci_{byte, word, long, quad}_test_and_{clear, set}_mask().
They will be used later.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Implement RW1C register framework.
With this patch, it would be easy to implement
W1C(Write 1 to Clear) register by just setting w1cmask.
Later RW1C register will be used by pcie.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Extract range functions from pci.h. These will be used by later patches
by non-PCI devices. Adjust current users.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Make type uint8_t from int because PCIIORegion::type is uint8_t.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>

make pci_parse_devfn() aware of func. With func = NULL it behave as before.
This will be used later.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

By making pci_add_capability() the special case of
pci_add_capability_at_offset() of offset = 0,
consolidate pci_add_capability_at_offset() into pci_add_capability().

Cc: Stefan Weil <weil@mail.berlios.de>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

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: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

make pci bridge aware of pci multi function property and let pci generic
code to set the bit.

Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

introduce multifunction property.
Also introduce new convenient device creation function which
will be used later.

For bisectability this patch doesn't do anything, but sets the property
resulting in no functional changes.
Actual changes will be introduced by later patch.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

replace PCIDeviceInfo::header_type with is_bridge
as suggested by Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Auto-assigned-address pci function (passing devfn = -1) is always
single function.
This patch adds assert() to guarantee that auto-assigned-address function
is always single function device at function = 0.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

add helper function which converts root bus to pci domain.
make them aware of pci domain.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

So remove unused constants,
PCI_STATUS_RESERVED_MASK_LO, PCI_STATUS_RESERVED_MASK_HI,
PCI_COMMAND_RESERVED, PCI_COMMAND_RESERVED_MASK_HI.
They were used once, but they aren't used anymore.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

add const to pci_is_express(), pci_config_size().
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Add argument, DeviceState*, to pci hot plug callback.
The argument will be used later to remove global variable.
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Acked-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Unlike virtio, device emulations need to add pci capabilities
at known offsets to match real hardware. Make this possible
by adding an appropriate API.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>