2011-03-14 09:29:37 -06:00
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obj-y += grant-table.o features.o events.o manage.o balloon.o
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2007-07-17 19:37:06 -06:00
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obj-y += xenbus/
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2009-01-07 19:07:11 -07:00
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2009-08-27 13:46:35 -06:00
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nostackp := $(call cc-option, -fno-stack-protector)
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CFLAGS_features.o := $(nostackp)
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2011-04-04 06:39:53 -06:00
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obj-$(CONFIG_BLOCK) += biomerge.o
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obj-$(CONFIG_HOTPLUG_CPU) += cpu_hotplug.o
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obj-$(CONFIG_XEN_XENCOMM) += xencomm.o
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obj-$(CONFIG_XEN_BALLOON) += xen-balloon.o
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2011-07-08 12:26:21 -06:00
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obj-$(CONFIG_XEN_SELFBALLOONING) += xen-selfballoon.o
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2011-04-04 06:39:53 -06:00
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obj-$(CONFIG_XEN_DEV_EVTCHN) += xen-evtchn.o
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obj-$(CONFIG_XEN_GNTDEV) += xen-gntdev.o
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2011-02-07 15:23:05 -07:00
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obj-$(CONFIG_XEN_GRANT_DEV_ALLOC) += xen-gntalloc.o
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2011-04-04 06:39:53 -06:00
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obj-$(CONFIG_XENFS) += xenfs/
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2010-05-17 10:08:21 -06:00
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obj-$(CONFIG_XEN_SYS_HYPERVISOR) += sys-hypervisor.o
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2011-09-29 05:05:58 -06:00
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obj-$(CONFIG_XEN_PVHVM) += platform-pci.o
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2011-06-17 15:06:20 -06:00
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obj-$(CONFIG_XEN_TMEM) += tmem.o
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2011-04-04 06:39:53 -06:00
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obj-$(CONFIG_SWIOTLB_XEN) += swiotlb-xen.o
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obj-$(CONFIG_XEN_DOM0) += pci.o
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xen/pciback: xen pci backend driver.
This is the host side counterpart to the frontend driver in
drivers/pci/xen-pcifront.c. The PV protocol is also implemented by
frontend drivers in other OSes too, such as the BSDs.
The PV protocol is rather simple. There is page shared with the guest,
which has the 'struct xen_pci_sharedinfo' embossed in it. The backend
has a thread that is kicked every-time the structure is changed and
based on the operation field it performs specific tasks:
XEN_PCI_OP_conf_[read|write]:
Read/Write 0xCF8/0xCFC filtered data. (conf_space*.c)
Based on which field is probed, we either enable/disable the PCI
device, change power state, read VPD, etc. The major goal of this
call is to provide a Physical IRQ (PIRQ) to the guest.
The PIRQ is Xen hypervisor global IRQ value irrespective of the IRQ
is tied in to the IO-APIC, or is a vector. For GSI type
interrupts, the PIRQ==GSI holds. For MSI/MSI-X the
PIRQ value != Linux IRQ number (thought PIRQ==vector).
Please note, that with Xen, all interrupts (except those level shared ones)
are injected directly to the guest - there is no host interaction.
XEN_PCI_OP_[enable|disable]_msi[|x] (pciback_ops.c)
Enables/disables the MSI/MSI-X capability of the device. These operations
setup the MSI/MSI-X vectors for the guest and pass them to the frontend.
When the device is activated, the interrupts are directly injected in the
guest without involving the host.
XEN_PCI_OP_aer_[detected|resume|mmio|slotreset]: In case of failure,
perform the appropriate AER commands on the guest. Right now that is
a cop-out - we just kill the guest.
Besides implementing those commands, it can also
- hide a PCI device from the host. When booting up, the user can specify
xen-pciback.hide=(1:0:0)(BDF..) so that host does not try to use the
device.
The driver was lifted from linux-2.6.18.hg tree and fixed up
so that it could compile under v3.0. Per suggestion from Jesse Barnes
moved the driver to drivers/xen/xen-pciback.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-10-13 15:22:20 -06:00
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obj-$(CONFIG_XEN_PCIDEV_BACKEND) += xen-pciback/
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2011-12-16 09:34:33 -07:00
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obj-$(CONFIG_XEN_PRIVCMD) += xen-privcmd.o
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xen/acpi-processor: C and P-state driver that uploads said data to hypervisor.
This driver solves three problems:
1). Parse and upload ACPI0007 (or PROCESSOR_TYPE) information to the
hypervisor - aka P-states (cpufreq data).
2). Upload the the Cx state information (cpuidle data).
3). Inhibit CPU frequency scaling drivers from loading.
The reason for wanting to solve 1) and 2) is such that the Xen hypervisor
is the only one that knows the CPU usage of different guests and can
make the proper decision of when to put CPUs and packages in proper states.
Unfortunately the hypervisor has no support to parse ACPI DSDT tables, hence it
needs help from the initial domain to provide this information. The reason
for 3) is that we do not want the initial domain to change P-states while the
hypervisor is doing it as well - it causes rather some funny cases of P-states
transitions.
For this to work, the driver parses the Power Management data and uploads said
information to the Xen hypervisor. It also calls acpi_processor_notify_smm()
to inhibit the other CPU frequency scaling drivers from being loaded.
Everything revolves around the 'struct acpi_processor' structure which
gets updated during the bootup cycle in different stages. At the startup, when
the ACPI parser starts, the C-state information is processed (processor_idle)
and saved in said structure as 'power' element. Later on, the CPU frequency
scaling driver (powernow-k8 or acpi_cpufreq), would call the the
acpi_processor_* (processor_perflib functions) to parse P-states information
and populate in the said structure the 'performance' element.
Since we do not want the CPU frequency scaling drivers from loading
we have to call the acpi_processor_* functions to parse the P-states and
call "acpi_processor_notify_smm" to stop them from loading.
There is also one oddity in this driver which is that under Xen, the
physical online CPU count can be different from the virtual online CPU count.
Meaning that the macros 'for_[online|possible]_cpu' would process only
up to virtual online CPU count. We on the other hand want to process
the full amount of physical CPUs. For that, the driver checks if the ACPI IDs
count is different from the APIC ID count - which can happen if the user
choose to use dom0_max_vcpu argument. In such a case a backup of the PM
structure is used and uploaded to the hypervisor.
[v1-v2: Initial RFC implementations that were posted]
[v3: Changed the name to passthru suggested by Pasi Kärkkäinen <pasik@iki.fi>]
[v4: Added vCPU != pCPU support - aka dom0_max_vcpus support]
[v5: Cleaned up the driver, fix bug under Athlon XP]
[v6: Changed the driver to a CPU frequency governor]
[v7: Jan Beulich <jbeulich@suse.com> suggestion to make it a cpufreq scaling driver
made me rework it as driver that inhibits cpufreq scaling driver]
[v8: Per Jan's review comments, fixed up the driver]
[v9: Allow to continue even if acpi_processor_preregister_perf.. fails]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-02-03 14:03:20 -07:00
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obj-$(CONFIG_XEN_ACPI_PROCESSOR) += xen-acpi-processor.o
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2011-04-04 06:39:53 -06:00
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xen-evtchn-y := evtchn.o
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2010-12-14 11:40:46 -07:00
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xen-gntdev-y := gntdev.o
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2011-02-07 15:23:05 -07:00
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xen-gntalloc-y := gntalloc.o
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2011-12-16 09:34:33 -07:00
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xen-privcmd-y := privcmd.o
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