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path: root/PcAtChipsetPkg/HpetTimerDxe/HpetTimer.c
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* PcAtChipsetPkg: Fix spelling errorsSean Brogan2019-10-221-6/+6
| | | | | | | | https://bugzilla.tianocore.org/show_bug.cgi?id=2263 Cc: Ray Ni <ray.ni@intel.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
* PcAtChipsetPkg: Replace BSD License with BSD+Patent LicenseMichael D Kinney2019-04-091-7/+1
| | | | | | | | | | | | | | | | | | | | https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
* PcAtChipsetPkg: Clean up source filesLiming Gao2018-06-281-72/+72
| | | | | | | | | | 1. Do not use tab characters 2. No trailing white space in one line 3. All files must end with CRLF Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
* PcAtChipsetPkg: Fix typing errorsThomas Huth2017-01-201-3/+3
| | | | | | | | | Correct the reported by the codespell utility in some files of PcAtChipsetPkg. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
* PcAtChipsetPkg/HpetTimerDxe: Fix race condition in SetTimerPeriod()Michael Kinney2016-10-271-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | https://bugzilla.tianocore.org/show_bug.cgi?id=182 The function TimerDriverSetTimerPeriod() disables the HPET timer while the HPET timer HW is reprogrammed with a new timer period. However, the MMIO write to disable the HPET timer HW can be delayed and an HPET timer interrupt may be processed in the middle of reprogramming the HPET timer HW and this may produced unexpected results. The fix is to raise TPL to TPL_HIGH_LEVEL in TimerDriverSetTimerPeriod() during the time the HPET timer HW is reprogrammed. This guarantees that no timer interrupts are processed during reprogramming. The TimerDriverGenerateSoftInterrupt() function in this same driver also raises TPL to TPL_HIGH_LEVEL, so this fix matches the logic that is already used in another function for the same reason. Cc: Ruiyu Ni <ruiyu.ni@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney <michael.d.kinney@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
* PcAtChipsetPkg: Fix typos in commentsGiri P Mudusuru2016-07-111-3/+3
| | | | | | | | | - EFI_UNSUPPORTEDT to EFI_UNSUPPORTED Cc: Ruiyu Ni <ruiyu.ni@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Giri P Mudusuru <giri.p.mudusuru@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
* PcAtChipsetPkg: Enable timer interrupt through I/O APICTycho Nightingale2014-06-201-1/+2
| | | | | | | | Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Tycho Nightingale <tycho.nightingale@pluribusnetworks.com> Reviewed-by: Elvin Li <elvin.li@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15576 6f19259b-4bc3-4df7-8a09-765794883524
* PcAtChipsetPkg HPET Timer DXE Driver: Update CPU Arch ↵rsun32011-11-251-4/+13
| | | | | | | | | | Protocol.SetTimerPeriod() to program HPET/IOAPIC register with APIC ID of current BSP in case the BSP has been switched. Signed-off-by: rsun3 Reviewed-by: li-elvin git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12778 6f19259b-4bc3-4df7-8a09-765794883524
* HPET driver was updated and included:li-elvin2011-11-151-63/+182
| | | | | | | | | | | | | Comparator register automatically grow without breaking main counter register, this allow other driver to use HPET main counter. Timer register overflow handle. 32-bit HPET timer support. TimerDriverSetTimerPeriod is changed to handle HPET timer interrupt delivered into real mode. Signed-off-by: li-elvin Reviewed-by: vanjeff git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12700 6f19259b-4bc3-4df7-8a09-765794883524
* Add generic HPET Timer DXE Driver and support libraries. mdkinney2011-09-021-4/+3
| | | | | | | | | Minor update to logic to prevent writing a the read-only MSI Capability bit with 0 when HPET supports MSIs Signed-off-by: mdkinney Reviewed-by: li-elvin git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12272 6f19259b-4bc3-4df7-8a09-765794883524
* Add generic HPET Timer DXE Driver and support librariesmdkinney2011-09-021-0/+860
Signed-off-by: mdkinney Reviewed-by: li-elvin git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12260 6f19259b-4bc3-4df7-8a09-765794883524
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