diff options
Diffstat (limited to 'drivers/char/drm/radeon_irq.c')
| -rw-r--r-- | drivers/char/drm/radeon_irq.c | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/drivers/char/drm/radeon_irq.c b/drivers/char/drm/radeon_irq.c deleted file mode 100644 index ee40d197deb..00000000000 --- a/drivers/char/drm/radeon_irq.c +++ /dev/null @@ -1,320 +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 Dänzer <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) -{ - struct drm_device *dev = (struct drm_device *) 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 | - RADEON_CRTC2_VBLANK_STAT)); - if (!stat) - return IRQ_NONE; - - stat &= dev_priv->irq_enable_reg; - - /* SW interrupt */ - if (stat & RADEON_SW_INT_TEST) { - DRM_WAKEUP(&dev_priv->swi_queue); - } - - /* VBLANK interrupt */ - if (stat & (RADEON_CRTC_VBLANK_STAT|RADEON_CRTC2_VBLANK_STAT)) { - int vblank_crtc = dev_priv->vblank_crtc; - - if ((vblank_crtc & - (DRM_RADEON_VBLANK_CRTC1 | DRM_RADEON_VBLANK_CRTC2)) == - (DRM_RADEON_VBLANK_CRTC1 | DRM_RADEON_VBLANK_CRTC2)) { - if (stat & RADEON_CRTC_VBLANK_STAT) - atomic_inc(&dev->vbl_received); - if (stat & RADEON_CRTC2_VBLANK_STAT) - atomic_inc(&dev->vbl_received2); - } else if (((stat & RADEON_CRTC_VBLANK_STAT) && - (vblank_crtc & DRM_RADEON_VBLANK_CRTC1)) || - ((stat & RADEON_CRTC2_VBLANK_STAT) && - (vblank_crtc & DRM_RADEON_VBLANK_CRTC2))) - atomic_inc(&dev->vbl_received); - - DRM_WAKEUP(&dev->vbl_queue); - drm_vbl_send_signals(dev); - } - - return IRQ_HANDLED; -} - -static int radeon_emit_irq(struct drm_device * 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(struct drm_device * 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; -} - -static int radeon_driver_vblank_do_wait(struct drm_device * dev, - unsigned int *sequence, int crtc) -{ - drm_radeon_private_t *dev_priv = - (drm_radeon_private_t *) dev->dev_private; - unsigned int cur_vblank; - int ret = 0; - int ack = 0; - atomic_t *counter; - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - if (crtc == DRM_RADEON_VBLANK_CRTC1) { - counter = &dev->vbl_received; - ack |= RADEON_CRTC_VBLANK_STAT; - } else if (crtc == DRM_RADEON_VBLANK_CRTC2) { - counter = &dev->vbl_received2; - ack |= RADEON_CRTC2_VBLANK_STAT; - } else - return -EINVAL; - - radeon_acknowledge_irqs(dev_priv, ack); - - 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(counter)) - - *sequence) <= (1 << 23))); - - *sequence = cur_vblank; - - return ret; -} - -int radeon_driver_vblank_wait(struct drm_device *dev, unsigned int *sequence) -{ - return radeon_driver_vblank_do_wait(dev, sequence, DRM_RADEON_VBLANK_CRTC1); -} - -int radeon_driver_vblank_wait2(struct drm_device *dev, unsigned int *sequence) -{ - return radeon_driver_vblank_do_wait(dev, sequence, DRM_RADEON_VBLANK_CRTC2); -} - -/* Needs the lock as it touches the ring. - */ -int radeon_irq_emit(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_radeon_private_t *dev_priv = dev->dev_private; - drm_radeon_irq_emit_t *emit = data; - int result; - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - result = radeon_emit_irq(dev); - - if (DRM_COPY_TO_USER(emit->irq_seq, &result, sizeof(int))) { - DRM_ERROR("copy_to_user\n"); - return -EFAULT; - } - - return 0; -} - -/* Doesn't need the hardware lock. - */ -int radeon_irq_wait(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - drm_radeon_private_t *dev_priv = dev->dev_private; - drm_radeon_irq_wait_t *irqwait = data; - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - return radeon_wait_irq(dev, irqwait->irq_seq); -} - -void radeon_enable_interrupt(struct drm_device *dev) -{ - drm_radeon_private_t *dev_priv = (drm_radeon_private_t *) dev->dev_private; - - dev_priv->irq_enable_reg = RADEON_SW_INT_ENABLE; - if (dev_priv->vblank_crtc & DRM_RADEON_VBLANK_CRTC1) - dev_priv->irq_enable_reg |= RADEON_CRTC_VBLANK_MASK; - - if (dev_priv->vblank_crtc & DRM_RADEON_VBLANK_CRTC2) - dev_priv->irq_enable_reg |= RADEON_CRTC2_VBLANK_MASK; - - RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg); - dev_priv->irq_enabled = 1; -} - -/* drm_dma.h hooks -*/ -void radeon_driver_irq_preinstall(struct drm_device * 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 | - RADEON_CRTC2_VBLANK_STAT)); -} - -void radeon_driver_irq_postinstall(struct drm_device * 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); - - radeon_enable_interrupt(dev); -} - -void radeon_driver_irq_uninstall(struct drm_device * dev) -{ - drm_radeon_private_t *dev_priv = - (drm_radeon_private_t *) dev->dev_private; - if (!dev_priv) - return; - - dev_priv->irq_enabled = 0; - - /* Disable *all* interrupts */ - RADEON_WRITE(RADEON_GEN_INT_CNTL, 0); -} - - -int radeon_vblank_crtc_get(struct drm_device *dev) -{ - drm_radeon_private_t *dev_priv = (drm_radeon_private_t *) dev->dev_private; - u32 flag; - u32 value; - - flag = RADEON_READ(RADEON_GEN_INT_CNTL); - value = 0; - - if (flag & RADEON_CRTC_VBLANK_MASK) - value |= DRM_RADEON_VBLANK_CRTC1; - - if (flag & RADEON_CRTC2_VBLANK_MASK) - value |= DRM_RADEON_VBLANK_CRTC2; - return value; -} - -int radeon_vblank_crtc_set(struct drm_device *dev, int64_t value) -{ - drm_radeon_private_t *dev_priv = (drm_radeon_private_t *) dev->dev_private; - if (value & ~(DRM_RADEON_VBLANK_CRTC1 | DRM_RADEON_VBLANK_CRTC2)) { - DRM_ERROR("called with invalid crtc 0x%x\n", (unsigned int)value); - return -EINVAL; - } - dev_priv->vblank_crtc = (unsigned int)value; - radeon_enable_interrupt(dev); - return 0; -} |