diff options
Diffstat (limited to 'shared-core/mach64_irq.c')
| -rw-r--r-- | shared-core/mach64_irq.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/shared-core/mach64_irq.c b/shared-core/mach64_irq.c deleted file mode 100644 index 149d970a..00000000 --- a/shared-core/mach64_irq.c +++ /dev/null @@ -1,159 +0,0 @@ -/* mach64_irq.c -- IRQ handling for ATI Mach64 -*- linux-c -*- - * Created: Tue Feb 25, 2003 by Leif Delgass, based on radeon_irq.c/r128_irq.c - */ -/*- - * Copyright (C) The Weather Channel, Inc. 2002. - * Copyright 2003 Leif Delgass - * All Rights Reserved. - * - * The Weather Channel (TM) funded Tungsten Graphics to develop the - * initial release of the Radeon 8500 driver under the XFree86 license. - * This notice must be preserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * Authors: - * Keith Whitwell <keith@tungstengraphics.com> - * Eric Anholt <anholt@FreeBSD.org> - * Leif Delgass <ldelgass@retinalburn.net> - */ - -#include "drmP.h" -#include "drm.h" -#include "mach64_drm.h" -#include "mach64_drv.h" - -irqreturn_t mach64_driver_irq_handler(DRM_IRQ_ARGS) -{ - struct drm_device *dev = arg; - drm_mach64_private_t *dev_priv = dev->dev_private; - int status; - - status = MACH64_READ(MACH64_CRTC_INT_CNTL); - - /* VBLANK interrupt */ - if (status & MACH64_CRTC_VBLANK_INT) { - /* Mask off all interrupt ack bits before setting the ack bit, since - * there may be other handlers outside the DRM. - * - * NOTE: On mach64, you need to keep the enable bits set when doing - * the ack, despite what the docs say about not acking and enabling - * in a single write. - */ - MACH64_WRITE(MACH64_CRTC_INT_CNTL, - (status & ~MACH64_CRTC_INT_ACKS) - | MACH64_CRTC_VBLANK_INT); - - atomic_inc(&dev_priv->vbl_received); - drm_handle_vblank(dev, 0); - return IRQ_HANDLED; - } - return IRQ_NONE; -} - -u32 mach64_get_vblank_counter(struct drm_device * dev, int crtc) -{ - const drm_mach64_private_t *const dev_priv = dev->dev_private; - - if (crtc != 0) - return 0; - - return atomic_read(&dev_priv->vbl_received); -} - -int mach64_enable_vblank(struct drm_device * dev, int crtc) -{ - drm_mach64_private_t *dev_priv = dev->dev_private; - u32 status = MACH64_READ(MACH64_CRTC_INT_CNTL); - - if (crtc != 0) { - DRM_ERROR("tried to enable vblank on non-existent crtc %d\n", - crtc); - return -EINVAL; - } - - DRM_DEBUG("before enable vblank CRTC_INT_CTNL: 0x%08x\n", status); - - /* Turn on VBLANK interrupt */ - MACH64_WRITE(MACH64_CRTC_INT_CNTL, MACH64_READ(MACH64_CRTC_INT_CNTL) - | MACH64_CRTC_VBLANK_INT_EN); - - return 0; -} - -void mach64_disable_vblank(struct drm_device * dev, int crtc) -{ - if (crtc != 0) { - DRM_ERROR("tried to disable vblank on non-existent crtc %d\n", - crtc); - return; - } - - /* - * FIXME: implement proper interrupt disable by using the vblank - * counter register (if available). - */ -} - -static void mach64_disable_vblank_local(struct drm_device * dev, int crtc) -{ - drm_mach64_private_t *dev_priv = dev->dev_private; - u32 status = MACH64_READ(MACH64_CRTC_INT_CNTL); - - if (crtc != 0) { - DRM_ERROR("tried to disable vblank on non-existent crtc %d\n", - crtc); - return; - } - - DRM_DEBUG("before disable vblank CRTC_INT_CTNL: 0x%08x\n", status); - - /* Disable and clear VBLANK interrupt */ - MACH64_WRITE(MACH64_CRTC_INT_CNTL, (status & ~MACH64_CRTC_VBLANK_INT_EN) - | MACH64_CRTC_VBLANK_INT); -} - -void mach64_driver_irq_preinstall(struct drm_device * dev) -{ - drm_mach64_private_t *dev_priv = dev->dev_private; - - u32 status = MACH64_READ(MACH64_CRTC_INT_CNTL); - - DRM_DEBUG("before install CRTC_INT_CTNL: 0x%08x\n", status); - - mach64_disable_vblank_local(dev, 0); -} - -int mach64_driver_irq_postinstall(struct drm_device * dev) -{ - return 0; -} - -void mach64_driver_irq_uninstall(struct drm_device * dev) -{ - drm_mach64_private_t *dev_priv = dev->dev_private; - if (!dev_priv) - return; - - mach64_disable_vblank_local(dev, 0); - - DRM_DEBUG("after uninstall CRTC_INT_CTNL: 0x%08x\n", - MACH64_READ(MACH64_CRTC_INT_CNTL)); -} |