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2016-10-26OvmfPkg/XenConsoleSerialPortLib: don't include <Uefi/UefiBaseType.h>Laszlo Ersek
XenConsoleSerialPortLib is a BASE type library instance, without being restricted to UEFI client modules. (For example, the "ArmVirtPkg/ArmVirtXen.dsc" platform builds this library instance into "ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf", which is a SEC type module.) For such library instances, including <Uefi/UefiBaseType.h> is not right. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
2015-11-26OvmfPkg XenConsoleSerialPortLib: Implement Get(Set)Control/SetAttributesStar Zeng
Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18972 6f19259b-4bc3-4df7-8a09-765794883524
2015-03-27OvmfPkg: XenConsoleSerialPortLib: deal with output overflowArd Biesheuvel
It is the responsibility of the SerialPortLib implementation to deal with flow control if the underlying medium cannot keep up with the inflow of data. So in our SerialPortWrite () function, we should spin as long as we need to in order to deliver all the data instead of giving up and returning a smaller value than the number of bytes we were given. Also, remove the 'if (Sent > 0)' condition on the signalling of the event channel: if the buffer is full and we haven't been able to add any more data, it makes perfect sense to signal the event channel again, even if we have done so before when we did write the data. Also, this patch brings the implementation of XenSerialPortLib in sync with the library class documentation. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> [lersek@redhat.com: replace DebugLib dependency with open-coded ASSERT()] git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17079 6f19259b-4bc3-4df7-8a09-765794883524
2015-03-03OvmfPkg: replace strict XenHypercallLib construction with explicit queryLaszlo Ersek
XenHypercallLib has two clients at the moment: XenBusDxe and XenConsoleSerialPortLib. Currently, when XenBusDxe starts on a non-Xen X86 platform (ie. as part of OVMF not running on Xen), the X86XenHypercallLib instance built into it fails to initialize, which triggers an ASSERT() in auto-generated code. Instead, let's call XenHypercallIsAvailable() in the driver's entry point, and exit cleanly when the driver is started on a non-Xen platform. Modify the constructor of XenConsoleSerialPortLib similarly; we shouldn't proceed if Xen is not available. In practice this check should never fail, because XenConsoleSerialPortLib is only used on ARM, and ArmXenHypercallLib is always available; but nonetheless we should be pedantic. Reported-by: Gabriel L. Somlo <gsomlo@gmail.com> Suggested-by: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17001 6f19259b-4bc3-4df7-8a09-765794883524
2015-02-28Ovmf/Xen: add Xen PV console SerialPortLib driverArd Biesheuvel
This implements a SerialPortLib instance that wires up to the PV console ring used by domU guests. Also imports the required upstream Xen io/console.h header. Contributed-under: TianoCore Contribution Agreement 1.0 Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16976 6f19259b-4bc3-4df7-8a09-765794883524