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2015-06-10virtio-pci: add virtio_pci_modern_region_map()Gerd Hoffmann
Add function to map modern virtio regions. Add offset to VirtIOPCIRegion. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-pci: add virtio_pci_modern_regions_init()Gerd Hoffmann
Add init function for the modern pci regions, move over the init code. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-pci: add struct VirtIOPCIRegion for virtio-1 regionsGerd Hoffmann
For now just place the MemoryRegion there, following patches will add more. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-balloon: switch to virtio_add_featureCornelia Huck
This was missed during the conversion of feature bit manipulation. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-pci: correctly set host notifiers for modern barJason Wang
Currently, during host notifier set. We only add eventfd for legacy bar, this is not correct since: - Non-transitional device does not have legacy bar, so qemu will crash since proxy->bar was not initialized. - Modern device uses modern bar and notify cap to notify the device, we should add eventfd for proxy->notify. So this patch fixes the above two issues by adding eventfd based on whether legacy or modern device were supported. Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-pci: make modern bar 64bit + prefetchableGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-pci: change & document virtio pci bar layout.Gerd Hoffmann
This patch adds variables for the pci bars (to get rid of the magic numbers in the code) and moves the modern virtio bar to region 4 so regions 2+3 are kept free. virtio-vga wants use them. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-pci: make QEMU_VIRTIO_PCI_QUEUE_MEM_MULT smallerGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-pci: add flags to enable/disable legacy/modernGerd Hoffmann
Add VIRTIO_PCI_FLAG_DISABLE_LEGACY and VIRTIO_PCI_FLAG_DISABLE_MODERN for VirtIOPCIProxy->flags. Also add properties for them. They can be used to disable modern (virtio 1.0) or legacy (virtio 0.9) modes. By default only legacy is advertized, modern will be turned on by default once all remaining spec compilance issues are addressed. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-pci: switch to modern accessors for 1.0Michael S. Tsirkin
virtio 1.0 config space is in LE format for all devices, use modern wrappers when accessed through the 1.0 BAR. Reported-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: add modern config accessorsMichael S. Tsirkin
virtio 1.0 defines config space as LE, as opposed to pre-1.0 which was native endian. Add API for transports to execute word/dword accesses in little endian format - will be useful for mmio and pci (byte access is also wrapped, for completeness). For simplicity, we still keep config in host native endian format, byteswap to LE on guest access. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: generation counter supportMichael S. Tsirkin
Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-pci: initial virtio 1.0 supportMichael S. Tsirkin
This is somewhat functional. With this, and linux driver from my tree, I was able to use virtio net as virtio 1.0 device for light browsing. At the moment, dataplane and vhost code is still missing. Based on Cornelia's virtio 1.0 patchset: Date: Thu, 11 Dec 2014 14:25:02 +0100 From: Cornelia Huck <cornelia.huck@de.ibm.com> To: virtualization@lists.linux-foundation.org, qemu-devel@nongnu.org Cc: rusty@rustcorp.com.au, thuth@linux.vnet.ibm.com, mst@redhat.com, Cornelia Huck <cornelia.huck@de.ibm.com> Subject: [PATCH RFC v6 00/20] qemu: towards virtio-1 host support Message-Id: <1418304322-7546-1-git-send-email-cornelia.huck@de.ibm.com> which is itself still missing some core bits. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10linux-headers: add virtio_pciMichael S. Tsirkin
Easier than duplicating code. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10vhost: 64 bit featuresCornelia Huck
Make sure that all vhost interfaces use 64 bit features, as the virtio core does, and make sure to use ULL everywhere possible to be on the safe side. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10vhost_net: add version_1 featureMichael S. Tsirkin
Add VERSION_1 to list of features that we should test at the backend. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-net: enable virtio 1.0Cornelia Huck
virtio-net (non-vhost) now should have everything in place to support virtio 1.0: let's enable the feature bit for it. Note that VIRTIO_F_VERSION_1 is technically a transport feature; once every device is ready for virtio 1.0, we can move setting this feature bit out of the individual devices. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-net: support longer headerCornelia Huck
virtio-1 devices always use num_buffers in the header, even if mergeable rx buffers have not been negotiated. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-net: no writeable mac for virtio-1Cornelia Huck
Devices operating as virtio 1.0 may not allow writes to the mac address in config space. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: allow to fail setting statusCornelia Huck
virtio-1 allow setting of the FEATURES_OK status bit to fail if the negotiated feature bits are inconsistent: let's fail virtio_set_status() in that case and update virtio-ccw to post an error to the guest. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: disallow late feature changes for virtio-1Cornelia Huck
For virtio-1 devices, the driver must not attempt to set feature bits after it set FEATURES_OK in the device status. Simply reject it in that case. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10dataplane: allow virtio-1 devicesCornelia Huck
Handle endianness conversion for virtio-1 virtqueues correctly. Note that dataplane now needs to be built per-target. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: allow virtio-1 queue layoutCornelia Huck
For virtio-1 devices, we allow a more complex queue layout that doesn't require descriptor table and rings on a physically-contigous memory area: add virtio_queue_set_rings() to allow transports to set this up. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio: endianness checks for virtio 1.0 devicesCornelia Huck
Add code that checks for the VERSION_1 feature bit in order to make decisions about the device's endianness. This allows us to support transitional devices. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10Merge remote-tracking branch 'remotes/kraxel/tags/pull-fw_cfg-20150610-1' ↵Peter Maydell
into staging fw_cfg: drop write support, qemu cmdline support, bugfixes. bios-tables-test: fix smbios test. # gpg: Signature made Wed Jun 10 07:29:53 2015 BST using RSA key ID D3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" * remotes/kraxel/tags/pull-fw_cfg-20150610-1: bios-tables-test: handle false-positive smbios signature matches fw_cfg: insert fw_cfg file blobs via qemu cmdline fw_cfg: prohibit insertion of duplicate fw_cfg file names fw_cfg: prevent selector key conflict fw_cfg: remove support for guest-side data writes fw_cfg: fix FW_CFG_BOOT_DEVICE update on ppc and sparc fw_cfg: add fw_cfg_modify_i16 (update) method QemuOpts: increase number of vm_config_groups Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-10Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20150609.0' ↵Peter Maydell
into staging Initial VFIO platform device support, v2 (Eric Auger, et al.) # gpg: Signature made Tue Jun 9 15:25:40 2015 BST using RSA key ID 3BB08B22 # gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>" # gpg: aka "Alex Williamson <alex@shazbot.org>" # gpg: aka "Alex Williamson <alwillia@redhat.com>" # gpg: aka "Alex Williamson <alex.l.williamson@gmail.com>" * remotes/awilliam/tags/vfio-update-20150609.0: hw/vfio/platform: calxeda xgmac device hw/vfio/platform: add irq assignment hw/vfio/platform: vfio-platform skeleton Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-10pcnet: force the buffer access to be in bounds during txPetr Matousek
4096 is the maximum length per TMD and it is also currently the size of the relay buffer pcnet driver uses for sending the packet data to QEMU for further processing. With packet spanning multiple TMDs it can happen that the overall packet size will be bigger than sizeof(buffer), which results in memory corruption. Fix this by only allowing to queue maximum sizeof(buffer) bytes. This is CVE-2015-3209. [Fixed 3-space indentation to QEMU's 4-space coding standard. --Stefan] Signed-off-by: Petr Matousek <pmatouse@redhat.com> Reported-by: Matt Tait <matttait@google.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-10vhost: put log correctly in vhost_dev_start()Jason Wang
We allocate an dummy log even if the size is zero. So we should put it unconditionally too. Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-gpu/2d: add virtio gpu core codeGerd Hoffmann
This patch adds the core code for virtio gpu emulation, covering 2d support. Written by Dave Airlie and Gerd Hoffmann. Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10stdvga: factor out mmio subregion initGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10stdvga: pass VGACommonState instead of PCIVGAStateGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10stdvga: fix offset in pci_vga_ioport_readGerd Hoffmann
Simliar to pci_vga_ioport_write. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10fw_cfg: prohibit insertion of duplicate fw_cfg file namesGabriel L. Somlo
Exit with an error (instead of simply logging a trace event) whenever the same fw_cfg file name is added multiple times via one of the fw_cfg_add_file[_callback]() host-side API calls. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10fw_cfg: prevent selector key conflictGabriel L. Somlo
Enforce a single assignment of data for each distinct selector key. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10fw_cfg: remove support for guest-side data writesGabriel L. Somlo
From this point forward, any guest-side writes to the fw_cfg data register will be treated as no-ops. This patch also removes the unused host-side API function fw_cfg_add_callback(), which allowed the registration of a callback to be executed each time the guest completed a full overwrite of a given fw_cfg data item. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10fw_cfg: fix FW_CFG_BOOT_DEVICE update on ppc and sparcGabriel L. Somlo
On ppc, sparc, and sparc64, the value of the FW_CFG_BOOT_DEVICE 16bit fw_cfg entry is repeatedly modified from a series of callbacks, which currently results in the previous value's dynamically allocated memory being leaked. This patch switches updating to the new fw_cfg_modify_i16() call, which does not cause memory leaks. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-10fw_cfg: add fw_cfg_modify_i16 (update) methodGabriel L. Somlo
Allow the ability to modify the value of an existing 16-bit integer fw_cfg item. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-06-09hw/vfio/platform: calxeda xgmac deviceEric Auger
The platform device class has become abstract. This patch introduces a calxeda xgmac device that derives from it. Signed-off-by: Eric Auger <eric.auger@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-06-09Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20150609' into ↵Peter Maydell
staging s390x/virtio-ccw: migration and virtio for 2.4 1. Migration fixups 2. virtio 9pfs # gpg: Signature made Tue Jun 9 09:00:05 2015 BST using RSA key ID B5A61C7C # gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>" * remotes/borntraeger/tags/s390x-20150609: s390x/migration: add comment about floating point migration s390x/kvm: always ignore empty vcpu interrupt state virtio-ccw/migration: Migrate config vector for virtio devices virtio-ccw: add support for 9pfs Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-09QemuOpts: Convert qemu_opts_foreach() to ErrorMarkus Armbruster
Retain the function value for now, to permit selective conversion of its callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com>
2015-06-08QemuOpts: Drop qemu_opts_foreach() parameter abort_on_failureMarkus Armbruster
When the argument is non-zero, qemu_opts_foreach() stops on callback returning non-zero, and returns that value. When the argument is zero, it doesn't stop, and returns the bit-wise inclusive or of all the return values. Funky :) The callers that pass zero could just as well pass one, because their callbacks can't return anything but zero: * qemu_add_globals()'s callback qdev_add_one_global() * qemu_config_write()'s callback config_write_opts() * main()'s callbacks default_driver_check(), drive_enable_snapshot(), vnc_init_func() Drop the parameter, and always stop. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com>
2015-06-08hw/vfio/platform: add irq assignmentEric Auger
This patch adds the code requested to assign interrupts to a guest. The interrupts are mediated through user handled eventfds only. Signed-off-by: Eric Auger <eric.auger@linaro.org> Tested-by: Vikram Sethi <vikrams@codeaurora.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-06-08hw/vfio/platform: vfio-platform skeletonEric Auger
Minimal VFIO platform implementation supporting register space user mapping but not IRQ assignment. Signed-off-by: Kim Phillips <kim.phillips@linaro.org> Signed-off-by: Eric Auger <eric.auger@linaro.org> Tested-by: Vikram Sethi <vikrams@codeaurora.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-06-08Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* KVM error improvement from Laurent * CONFIG_PARALLEL fix from Mirek * Atomic/optimized dirty bitmap access from myself and Stefan * BUILD_DIR convenience/bugfix from Peter C * Memory leak fix from Shannon * SMM improvements (though still TCG only) from myself and Gerd, acked by mst # gpg: Signature made Fri Jun 5 18:45:20 2015 BST using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (62 commits) update Linux headers from kvm/next atomics: add explicit compiler fence in __atomic memory barriers ich9: implement SMI_LOCK q35: implement TSEG q35: add test for SMRAM.D_LCK q35: implement SMRAM.D_LCK q35: add config space wmask for SMRAM and ESMRAMC q35: fix ESMRAMC default q35: implement high SMRAM hw/i386: remove smram_update target-i386: use memory API to implement SMRAM hw/i386: add a separate region that tracks the SMRAME bit target-i386: create a separate AddressSpace for each CPU vl: run "late" notifiers immediately qom: add object_property_add_const_link vl: allow full-blown QemuOpts syntax for -global pflash_cfi01: add secure property pflash_cfi01: change to new-style MMIO accessors pflash_cfi01: change big-endian property to BIT type target-i386: wake up processors that receive an SMI ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-08Merge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into stagingPeter Maydell
# gpg: Signature made Fri Jun 5 20:59:07 2015 BST using RSA key ID AAFC390E # gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: FAEB 9711 A12C F475 812F 18F2 88A9 064D 1835 61EB # Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76 CBD0 7DEF 8106 AAFC 390E * remotes/jnsnow/tags/ide-pull-request: macio: remove remainder_len DBDMA_io property macio: update comment/constants to reflect the new code macio: switch pmac_dma_write() over to new offset/len implementation macio: switch pmac_dma_read() over to new offset/len implementation fdc-test: Test state for existing cases more thoroughly fdc: Fix MSR.RQM flag fdc: Disentangle phases in fdctrl_read_data() fdc: Code cleanup in fdctrl_write_data() fdc: Use phase in fdctrl_write_data() fdc: Introduce fdctrl->phase fdc: Rename fdctrl_set_fifo() to fdctrl_to_result_phase() fdc: Rename fdctrl_reset_fifo() to fdctrl_to_command_phase() Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-05ich9: implement SMI_LOCKGerd Hoffmann
Add write mask for the smi enable register, so we can disable write access to certain bits. Open all bits on reset. Disable write access to GBL_SMI_EN when SMI_LOCK (in ich9 lpc pci config space) is set. Write access to SMI_LOCK itself is disabled too. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05q35: implement TSEGGerd Hoffmann
TSEG provides larger amounts of SMRAM than the 128 KB available with legacy SMRAM and high SMRAM. Route access to tseg into nowhere when enabled, for both cpus and busmaster dma, and add tseg window to smram region, so cpus can access it in smm mode. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05q35: implement SMRAM.D_LCKGerd Hoffmann
Once the SMRAM.D_LCK bit has been set by the guest several bits in SMRAM and ESMRAMC become readonly until the next machine reset. Implement this by updating the wmask accordingly when the guest sets the lock bit. As the lock it itself is locked down too we don't need to worry about the guest clearing the lock bit. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05q35: add config space wmask for SMRAM and ESMRAMCGerd Hoffmann
Not all bits in SMRAM and ESMRAMC can be changed by the guest. Add wmask defines accordingly and set them in mch_reset(). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05q35: fix ESMRAMC defaultGerd Hoffmann
The cache bits in ESMRAMC are hardcoded to 1 (=disabled) according to the q35 mch specs. Add and use a define with this default. While being at it also update the SMRAM default to use the name (no code change, just makes things a bit more readable). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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