mirror of
https://gitlab.freedesktop.org/mesa/drm.git
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f2a0c5438d
irq handler in DRM(irq_install). Modify all drivers to ensure irq
handler is removed before cleanup and cleanup is called at takedown.
Remove unused buffer private struct fields in i810, i830. Check for
lock on init/cleanup in all drivers except i810/i830. The current DDX
for i810 and i830 doesn't hold the lock on kernel init (FIXME?).
101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
/* r128_irq.c -- IRQ handling for radeon -*- linux-c -*-
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*
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* Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
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*
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* The Weather Channel (TM) funded Tungsten Graphics to develop the
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* initial release of the Radeon 8500 driver under the XFree86 license.
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* This notice must be preserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Keith Whitwell <keith@tungstengraphics.com>
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* Eric Anholt <anholt@FreeBSD.org>
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*/
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#include "r128.h"
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#include "drmP.h"
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#include "drm.h"
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#include "r128_drm.h"
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#include "r128_drv.h"
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void r128_dma_service( DRM_IRQ_ARGS )
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{
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drm_device_t *dev = (drm_device_t *) arg;
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drm_r128_private_t *dev_priv =
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(drm_r128_private_t *)dev->dev_private;
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int status;
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status = R128_READ( R128_GEN_INT_STATUS );
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/* VBLANK interrupt */
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if ( status & R128_CRTC_VBLANK_INT ) {
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R128_WRITE( R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK );
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atomic_inc(&dev->vbl_received);
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DRM_WAKEUP(&dev->vbl_queue);
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DRM(vbl_send_signals)( dev );
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}
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}
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int DRM(vblank_wait)(drm_device_t *dev, unsigned int *sequence)
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{
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unsigned int cur_vblank;
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int ret = 0;
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/* Assume that the user has missed the current sequence number
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* by about a day rather than she wants to wait for years
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* using vertical blanks...
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*/
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DRM_WAIT_ON( ret, dev->vbl_queue, 3*DRM_HZ,
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( ( ( cur_vblank = atomic_read(&dev->vbl_received ) )
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- *sequence ) <= (1<<23) ) );
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*sequence = cur_vblank;
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return ret;
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}
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void r128_driver_irq_preinstall( drm_device_t *dev ) {
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drm_r128_private_t *dev_priv =
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(drm_r128_private_t *)dev->dev_private;
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/* Disable *all* interrupts */
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R128_WRITE( R128_GEN_INT_CNTL, 0 );
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/* Clear vblank bit if it's already high */
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R128_WRITE( R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK );
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}
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void r128_driver_irq_postinstall( drm_device_t *dev ) {
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drm_r128_private_t *dev_priv =
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(drm_r128_private_t *)dev->dev_private;
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/* Turn on VBL interrupt */
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R128_WRITE( R128_GEN_INT_CNTL, R128_CRTC_VBLANK_INT_EN );
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}
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void r128_driver_irq_uninstall( drm_device_t *dev ) {
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drm_r128_private_t *dev_priv =
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(drm_r128_private_t *)dev->dev_private;
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if (!dev_priv)
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return;
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/* Disable *all* interrupts */
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R128_WRITE( R128_GEN_INT_CNTL, 0 );
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}
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