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path: root/drivers/char/drm/i830_irq.c
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Diffstat (limited to 'drivers/char/drm/i830_irq.c')
-rw-r--r--drivers/char/drm/i830_irq.c186
1 files changed, 0 insertions, 186 deletions
diff --git a/drivers/char/drm/i830_irq.c b/drivers/char/drm/i830_irq.c
deleted file mode 100644
index 91ec2bb497e..00000000000
--- a/drivers/char/drm/i830_irq.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/* i830_dma.c -- DMA support for the I830 -*- linux-c -*-
- *
- * Copyright 2002 Tungsten Graphics, Inc.
- * All Rights Reserved.
- *
- * 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
- * TUNGSTEN GRAPHICS 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>
- *
- */
-
-#include "drmP.h"
-#include "drm.h"
-#include "i830_drm.h"
-#include "i830_drv.h"
-#include <linux/interrupt.h> /* For task queue support */
-#include <linux/delay.h>
-
-irqreturn_t i830_driver_irq_handler(DRM_IRQ_ARGS)
-{
- struct drm_device *dev = (struct drm_device *) arg;
- drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
- u16 temp;
-
- temp = I830_READ16(I830REG_INT_IDENTITY_R);
- DRM_DEBUG("%x\n", temp);
-
- if (!(temp & 2))
- return IRQ_NONE;
-
- I830_WRITE16(I830REG_INT_IDENTITY_R, temp);
-
- atomic_inc(&dev_priv->irq_received);
- wake_up_interruptible(&dev_priv->irq_queue);
-
- return IRQ_HANDLED;
-}
-
-static int i830_emit_irq(struct drm_device * dev)
-{
- drm_i830_private_t *dev_priv = dev->dev_private;
- RING_LOCALS;
-
- DRM_DEBUG("%s\n", __func__);
-
- atomic_inc(&dev_priv->irq_emitted);
-
- BEGIN_LP_RING(2);
- OUT_RING(0);
- OUT_RING(GFX_OP_USER_INTERRUPT);
- ADVANCE_LP_RING();
-
- return atomic_read(&dev_priv->irq_emitted);
-}
-
-static int i830_wait_irq(struct drm_device * dev, int irq_nr)
-{
- drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
- DECLARE_WAITQUEUE(entry, current);
- unsigned long end = jiffies + HZ * 3;
- int ret = 0;
-
- DRM_DEBUG("%s\n", __func__);
-
- if (atomic_read(&dev_priv->irq_received) >= irq_nr)
- return 0;
-
- dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT;
-
- add_wait_queue(&dev_priv->irq_queue, &entry);
-
- for (;;) {
- __set_current_state(TASK_INTERRUPTIBLE);
- if (atomic_read(&dev_priv->irq_received) >= irq_nr)
- break;
- if ((signed)(end - jiffies) <= 0) {
- DRM_ERROR("timeout iir %x imr %x ier %x hwstam %x\n",
- I830_READ16(I830REG_INT_IDENTITY_R),
- I830_READ16(I830REG_INT_MASK_R),
- I830_READ16(I830REG_INT_ENABLE_R),
- I830_READ16(I830REG_HWSTAM));
-
- ret = -EBUSY; /* Lockup? Missed irq? */
- break;
- }
- schedule_timeout(HZ * 3);
- if (signal_pending(current)) {
- ret = -EINTR;
- break;
- }
- }
-
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&dev_priv->irq_queue, &entry);
- return ret;
-}
-
-/* Needs the lock as it touches the ring.
- */
-int i830_irq_emit(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- drm_i830_private_t *dev_priv = dev->dev_private;
- drm_i830_irq_emit_t *emit = data;
- int result;
-
- LOCK_TEST_WITH_RETURN(dev, file_priv);
-
- if (!dev_priv) {
- DRM_ERROR("%s called with no initialization\n", __func__);
- return -EINVAL;
- }
-
- result = i830_emit_irq(dev);
-
- if (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 i830_irq_wait(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- drm_i830_private_t *dev_priv = dev->dev_private;
- drm_i830_irq_wait_t *irqwait = data;
-
- if (!dev_priv) {
- DRM_ERROR("%s called with no initialization\n", __func__);
- return -EINVAL;
- }
-
- return i830_wait_irq(dev, irqwait->irq_seq);
-}
-
-/* drm_dma.h hooks
-*/
-void i830_driver_irq_preinstall(struct drm_device * dev)
-{
- drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
-
- I830_WRITE16(I830REG_HWSTAM, 0xffff);
- I830_WRITE16(I830REG_INT_MASK_R, 0x0);
- I830_WRITE16(I830REG_INT_ENABLE_R, 0x0);
- atomic_set(&dev_priv->irq_received, 0);
- atomic_set(&dev_priv->irq_emitted, 0);
- init_waitqueue_head(&dev_priv->irq_queue);
-}
-
-void i830_driver_irq_postinstall(struct drm_device * dev)
-{
- drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
-
- I830_WRITE16(I830REG_INT_ENABLE_R, 0x2);
-}
-
-void i830_driver_irq_uninstall(struct drm_device * dev)
-{
- drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
- if (!dev_priv)
- return;
-
- I830_WRITE16(I830REG_INT_MASK_R, 0xffff);
- I830_WRITE16(I830REG_INT_ENABLE_R, 0x0);
-}