diff options
Diffstat (limited to 'drivers/char/drm/radeon_irq.c')
| -rw-r--r-- | drivers/char/drm/radeon_irq.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/drivers/char/drm/radeon_irq.c b/drivers/char/drm/radeon_irq.c deleted file mode 100644 index 40474a65f56..00000000000 --- a/drivers/char/drm/radeon_irq.c +++ /dev/null @@ -1,245 +0,0 @@ -/* radeon_irq.c -- IRQ handling for radeon -*- linux-c -*- - * - * Copyright (C) The Weather Channel, Inc. 2002. 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 - * PRECISION INSIGHT 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> - * Michel D�zer <michel@daenzer.net> - */ - -#include "drmP.h" -#include "drm.h" -#include "radeon_drm.h" -#include "radeon_drv.h" - -static __inline__ u32 radeon_acknowledge_irqs(drm_radeon_private_t *dev_priv, u32 mask) -{ - u32 irqs = RADEON_READ(RADEON_GEN_INT_STATUS) & mask; - if (irqs) - RADEON_WRITE(RADEON_GEN_INT_STATUS, irqs); - return irqs; -} - -/* Interrupts - Used for device synchronization and flushing in the - * following circumstances: - * - * - Exclusive FB access with hw idle: - * - Wait for GUI Idle (?) interrupt, then do normal flush. - * - * - Frame throttling, NV_fence: - * - Drop marker irq's into command stream ahead of time. - * - Wait on irq's with lock *not held* - * - Check each for termination condition - * - * - Internally in cp_getbuffer, etc: - * - as above, but wait with lock held??? - * - * NOTE: These functions are misleadingly named -- the irq's aren't - * tied to dma at all, this is just a hangover from dri prehistory. - */ - -irqreturn_t radeon_driver_irq_handler( DRM_IRQ_ARGS ) -{ - drm_device_t *dev = (drm_device_t *) arg; - drm_radeon_private_t *dev_priv = - (drm_radeon_private_t *)dev->dev_private; - u32 stat; - - /* Only consider the bits we're interested in - others could be used - * outside the DRM - */ - stat = radeon_acknowledge_irqs(dev_priv, (RADEON_SW_INT_TEST_ACK | - RADEON_CRTC_VBLANK_STAT)); - if (!stat) - return IRQ_NONE; - - /* SW interrupt */ - if (stat & RADEON_SW_INT_TEST) { - DRM_WAKEUP( &dev_priv->swi_queue ); - } - - /* VBLANK interrupt */ - if (stat & RADEON_CRTC_VBLANK_STAT) { - atomic_inc(&dev->vbl_received); - DRM_WAKEUP(&dev->vbl_queue); - drm_vbl_send_signals( dev ); - } - - return IRQ_HANDLED; -} - -static int radeon_emit_irq(drm_device_t *dev) -{ - drm_radeon_private_t *dev_priv = dev->dev_private; - unsigned int ret; - RING_LOCALS; - - atomic_inc(&dev_priv->swi_emitted); - ret = atomic_read(&dev_priv->swi_emitted); - - BEGIN_RING( 4 ); - OUT_RING_REG( RADEON_LAST_SWI_REG, ret ); - OUT_RING_REG( RADEON_GEN_INT_STATUS, RADEON_SW_INT_FIRE ); - ADVANCE_RING(); - COMMIT_RING(); - - return ret; -} - - -static int radeon_wait_irq(drm_device_t *dev, int swi_nr) -{ - drm_radeon_private_t *dev_priv = - (drm_radeon_private_t *)dev->dev_private; - int ret = 0; - - if (RADEON_READ( RADEON_LAST_SWI_REG ) >= swi_nr) - return 0; - - dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE; - - DRM_WAIT_ON( ret, dev_priv->swi_queue, 3 * DRM_HZ, - RADEON_READ( RADEON_LAST_SWI_REG ) >= swi_nr ); - - return ret; -} - -int radeon_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence) -{ - drm_radeon_private_t *dev_priv = - (drm_radeon_private_t *)dev->dev_private; - unsigned int cur_vblank; - int ret = 0; - - if ( !dev_priv ) { - DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ ); - return DRM_ERR(EINVAL); - } - - radeon_acknowledge_irqs(dev_priv, RADEON_CRTC_VBLANK_STAT); - - dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE; - - /* Assume that the user has missed the current sequence number - * by about a day rather than she wants to wait for years - * using vertical blanks... - */ - DRM_WAIT_ON( ret, dev->vbl_queue, 3*DRM_HZ, - ( ( ( cur_vblank = atomic_read(&dev->vbl_received ) ) - - *sequence ) <= (1<<23) ) ); - - *sequence = cur_vblank; - - return ret; -} - - -/* Needs the lock as it touches the ring. - */ -int radeon_irq_emit( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_radeon_private_t *dev_priv = dev->dev_private; - drm_radeon_irq_emit_t emit; - int result; - - LOCK_TEST_WITH_RETURN( dev, filp ); - - if ( !dev_priv ) { - DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ ); - return DRM_ERR(EINVAL); - } - - DRM_COPY_FROM_USER_IOCTL( emit, (drm_radeon_irq_emit_t __user *)data, - sizeof(emit) ); - - result = radeon_emit_irq( dev ); - - if ( DRM_COPY_TO_USER( emit.irq_seq, &result, sizeof(int) ) ) { - DRM_ERROR( "copy_to_user\n" ); - return DRM_ERR(EFAULT); - } - - return 0; -} - - -/* Doesn't need the hardware lock. - */ -int radeon_irq_wait( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_radeon_private_t *dev_priv = dev->dev_private; - drm_radeon_irq_wait_t irqwait; - - if ( !dev_priv ) { - DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ ); - return DRM_ERR(EINVAL); - } - - DRM_COPY_FROM_USER_IOCTL( irqwait, (drm_radeon_irq_wait_t __user*)data, - sizeof(irqwait) ); - - return radeon_wait_irq( dev, irqwait.irq_seq ); -} - - -/* drm_dma.h hooks -*/ -void radeon_driver_irq_preinstall( drm_device_t *dev ) { - drm_radeon_private_t *dev_priv = - (drm_radeon_private_t *)dev->dev_private; - - /* Disable *all* interrupts */ - RADEON_WRITE( RADEON_GEN_INT_CNTL, 0 ); - - /* Clear bits if they're already high */ - radeon_acknowledge_irqs(dev_priv, (RADEON_SW_INT_TEST_ACK | - RADEON_CRTC_VBLANK_STAT)); -} - -void radeon_driver_irq_postinstall( drm_device_t *dev ) { - drm_radeon_private_t *dev_priv = - (drm_radeon_private_t *)dev->dev_private; - - atomic_set(&dev_priv->swi_emitted, 0); - DRM_INIT_WAITQUEUE( &dev_priv->swi_queue ); - - /* Turn on SW and VBL ints */ - RADEON_WRITE( RADEON_GEN_INT_CNTL, - RADEON_CRTC_VBLANK_MASK | - RADEON_SW_INT_ENABLE ); -} - -void radeon_driver_irq_uninstall( drm_device_t *dev ) { - drm_radeon_private_t *dev_priv = - (drm_radeon_private_t *)dev->dev_private; - if (!dev_priv) - return; - - /* Disable *all* interrupts */ - RADEON_WRITE( RADEON_GEN_INT_CNTL, 0 ); -} |