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path: root/hw/pci.c
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2011-08-08pci: allow I/O BARs to be registered with pci_register_bar_region()Avi Kivity
Reviewed-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-08pci: pass I/O address space to new PCI busAvi Kivity
This lets us register BARs in the I/O address space. Reviewed-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-08pci: add API to get a BAR's mapped addressAvi Kivity
Some (hacky) devices that have a back-channel to read this address back outside the normal configuration mechanisms, such as VMware svga. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-04Merge remote-tracking branch 'mst/for_anthony' into stagingAnthony Liguori
2011-07-29pci: add MemoryRegion based BAR management APIAvi Kivity
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: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-29pci: pass address space to pci bus when createdAvi Kivity
This is now done sloppily, via get_system_memory(). Eventually callers will be converted to stop using that. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-27pci: Common overflow preventionJan Kiszka
Introduce pci_config_read/write_common helpers to prevent passing accesses down the callback chain that go beyond the config space limits. Adjust length assertions as they are no longer correct (cutting may generate valid 3 byte accesses). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-06-15pci: don't call qdev pci init methodIsaku Yamahata
As pci id initialization is moved to common layer, some initialization function can be empty. So don't call init method if NULL. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-06-15Merge remote-tracking branch 'origin/master' into pciMichael S. Tsirkin
Conflicts: hw/virtio-pci.c
2011-06-12pci: move ids of config space into PCIDeviceInfoIsaku Yamahata
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: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-05-12Merge remote-tracking branch 'stefanha/trivial-patches' into stagingAnthony Liguori
Conflicts: cpu-all.h
2011-05-08pci: Use of qemu_put_ram_ptr in pci_add_option_rom.John Baboval
Prevent a deadlock caused by leaving a map cache bucket locked by the preceding qemu_get_ram_ptr() call. Signed-off-By: John Baboval <john.baboval@virtualcomputer.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-06Fix typo in code and commentsStefan Weil
Replace writeable -> writable Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-05-05pci: Add class 0x403 as 'audio controller'Jan Kiszka
Used by HD audio controllers like our intel-hda. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-04-07pci: add pci_register_bar_simple() APIAvi Kivity
This is similar to pci_register_bar(), but automatically registers a single memory region spanning the entire BAR. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-04-01pci: add accessor function to get irq levelsIsaku Yamahata
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: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-03-28pci: use uint8_t for devfn_minIsaku Yamahata
use uint8_t for devfn_min instead of int. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-03-28pci: use PCI_DEVFN in pci_get_bus_devfn()Isaku Yamahata
Replace hardcoded logic by a common macro. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-03-28pci: use devfn for pci_find_device() instead of (slot, fn) pairIsaku Yamahata
(slot, fn) pair is somewhat confusing because of ARI. So use devfn for pci_find_device() instead of (slot, fn). Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-02-20pci: Fix memory leakStefan Weil
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-02-12pci: add creation functions that may failBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-01-27pci: typo in pcibus_get_dev_path()Isaku Yamahata
This patch fixes typo in pcibus_get_dev_path(). Without this patch, the result of pcibus_get_dev_path() isn't unique. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-01-27pci: bridge control fixupMichael S. Tsirkin
PCI_BRIDGE_CTL_DISCARD_STATUS (bit 10 in bridge control register) is W1C so we should not make it writeable, otherwise the assert(!(wmask & w1cmask)) in pci_default_write_config() is hit Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reported-by: Isaku Yamahata <yamahata@valinux.co.jp> Tested-by: Isaku Yamahata <yamahata@valinux.co.jp>
2011-01-24pci: memory leak of PCIDevice::rom_fileIsaku Yamahata
PCIDevice::rom_file is leaked. PCIDevice::rom_file is allocated in pci_qdev_init(), but not freed anywhere. free it in qemu_unregister_device(). Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-01-20pci: use qemu_malloc() in pcibus_get_dev_path()Isaku Yamahata
use qemu_malloc() instead of direct use of malloc(). Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-01-20pci: deassert intx on reset.Isaku Yamahata
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: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-01-19pci: fix device pathsMichael S. Tsirkin
Patch a6a7005d14b3c32d4864a718fb1cb19c789f58a5 generated broken device paths. We snprintf with a length shorter than the output, so the last character is discarded and replaced by the null byte. Fix it up by snprintf to a buffer which is larger by 1 byte and then memcpy the data (without the null byte) to where we need it. Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-01-10pci: allow devices being tagged as not hotpluggable.Gerd Hoffmann
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: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-27pci: fix migration path for devices behind bridgesMichael S. Tsirkin
The device path used for migration is currently broken for for all devices behind a nested bridge. Replace this by a hierarchical list of slot/function numbers, walking the path from root down to device. Add :00 after the domain number so that if there are no nested bridges, this is compatible with what we have now. Note: as pointed out by Gleb, using openfirmware paths might be cleaner, doing this would break compatibility though, and the IDs used are not guest or user visible at all, so breaking the compatibility is probably not worth it. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-24pci: introduce a helper function to convert qdev id to PCIDeviceIsaku Yamahata
This patch introduce a helper function to get PCIDevice from qdev id. This function will be used later. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-22pcie: add flr supportIsaku Yamahata
Support flr: trigger device reset on flr config write. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-12-19pci: don't use bus number in migration, stub outMichael S. Tsirkin
Using bus numbers in migration is clearly wrong as they are guest assigned. Not really sure what the right thing to do is, for now stick 0 in there so things keep working for non-nested setups, add a TODO. We also probably have to mark nested bridges as non-migrateable until this is fixed? Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Alex Williamson <alex.williamson@redhat.com>
2010-12-17Merge remote branch 'mst/for_anthony' into stagingAnthony Liguori
2010-12-11Add bootindex for option roms.Gleb Natapov
Extend -option-rom command to have additional parameter ,bootindex=. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-11Add get_fw_dev_path callback for pci bus.Gleb Natapov
Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-12-09pci: untangle pci/msi dependencyMichael S. Tsirkin
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: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
2010-12-09pci: make command SERR bit writableIsaku Yamahata
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: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-24pci: fix bus walk under secondary bus resetMichael S. Tsirkin
Take into account secondary bus reset bit for bus walk: devices behind a reset bus should not respond to configuration cycles. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-22pci: use qdev reset framework for pci bus resetIsaku Yamahata
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>
2010-11-22pci: Automatically patch PCI vendor id and device id in PCI ROMStefan Weil
PCI devices with different vendor or device ids sometimes share the same rom code. Only the ids and the checksum differs in a boot rom for such devices. The i825xx ethernet controller family is a typical example which is implemented in hw/eepro100.c. It uses at least 3 different device ids, so normally 3 boot roms would be needed. By automatically patching vendor id and device id (and the checksum) in qemu, all emulated family members can share the same boot rom. VGA bios roms are another example with different vendor and device ids. Only qemu's built-in default rom files will be patched. v2: * Patch also the vendor id (and remove the sanity check for vendor id). v3: * Don't patch a rom file when its name was set by the user. Thus we avoid modifications of unknown rom data. Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-22pci: fix bridge control bit wmaskMichael S. Tsirkin
Bits 12 to 15 in bridge control register are reserver and must be read-only zero, curent mask is 0xffff which makes them writeable. Fix this up by using symbolic bit names for writeable bits instead of a hardcoded constant. Fix a comment w1mask -> w1cmask as well. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-22pci: add W1C bits to pci status registerIsaku Yamahata
This patch adds W1C bit support in the initialization/reset of pci status registers. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-11-16pci: allow hotplug removal of cold-plugged devicesMichael S. Tsirkin
This patch fixes hot unplug of cold plugged devices (those present at system start), which got broken by 5beb8ad503c88a76f2b8106c3b74b4ce485a60e1 . Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Cam Macdonell <cam@cs.ualberta.ca> Tested-by: Cam Macdonell <cam@cs.ualberta.ca> Reported-by: Cam Macdonell <cam@cs.ualberta.ca>.
2010-11-16PCI: Bus number from the bridge, not the deviceAlex Williamson
pcibus_dev_print() was erroneously retrieving the device bus number from the secondary bus number offset of the device instead of the bridge above the device. This ends of landing in the 2nd byte of the 3rd BAR for devices, which thankfully is usually zero. Note: pcibus_get_dev_path() copied this code, inheriting the same bug. pcibus_get_dev_path() is used for ramblock naming, so changing it can effect migration. However, I've only seen this byte be non-zero for an assigned device, which can't migrate anyway, so hopefully we won't run into any issues. This patch does not touch pcibus_get_dev_path, as bus number is guest assigned for nested buses, so using it for migration is broken anyway. Fix it properly later. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-10-27Merge branch 'pci' into for_anthonyMichael S. Tsirkin
2010-10-27pci: improve w1c mask handlingMichael S. Tsirkin
- save/restore must not check w1c bits since they are in fact guest controlled - clear w1c bits on reset Note: for express there are different kinds of reset, some leave part of config space alone. We will likely need a sticky bit mask to implement this. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-10-19pci: use pci_word_test_and_clear_mask() in pci_device_reset()Isaku Yamahata
use pci_clear_bit_word() in pci_device_reset() where appropriate. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-10-19pci: introduce helper function to handle msi-x and msi.Isaku Yamahata
this patch implements helper functions to handle msi-x and msi uniformly. They will be used later. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-10-18pci: make pci_del_capability() update for w1cmaskIsaku Yamahata
Clear w1cmask when deleting a pci capability. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-10-05Fix spelling in commentsStefan Weil
multifuction -> multifunction successfull -> successful. Signed-off-by: Stefan Weil <weil@mail.berlios.de>
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