drm_irq.c revision 1450
1450N/A * Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved. 1450N/A * Created: Fri Oct 18 2003 by anholt@FreeBSD.org 1450N/A * Copyright 2003 Eric Anholt 1450N/A * Permission is hereby granted, free of charge, to any person obtaining a 1450N/A * copy of this software and associated documentation files (the "Software"), 1450N/A * to deal in the Software without restriction, including without limitation 1450N/A * the rights to use, copy, modify, merge, publish, distribute, sublicense, 1450N/A * and/or sell copies of the Software, and to permit persons to whom the 1450N/A * Software is furnished to do so, subject to the following conditions: 1450N/A * The above copyright notice and this permission notice (including the next 1450N/A * paragraph) shall be included in all copies or substantial portions of the 1450N/A * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 1450N/A * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 1450N/A * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 1450N/A * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 1450N/A * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 1450N/A * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 1450N/A * Eric Anholt <anholt@FreeBSD.org> 1450N/A "high-level interrupts are not supported");
1450N/A /* setup the interrupt handler */ 1450N/A /* before installing handler */ 1450N/A /* after installing handler */ 1450N/A * Handle drivers whose DRM used to require IRQ setup but the 1450N/A * Don't block process, send signal when vblank interrupt 1450N/A /* block until vblank interrupt */ 1450N/A * Schedule a tasklet to call back a driver hook with the HW lock held. 1450N/A * \param func Driver callback. 1450N/A * This is intended for triggering actions that require the HW lock from an 1450N/A * interrupt handler. The lock will be grabbed ASAP after the interrupt handler 1450N/A * completes. Note that the callback may be called from interrupt or process 1450N/A * context, it must not make any assumptions about this. Also, the HW lock will 1450N/A * be held with the kernel context or any client context.