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path: root/drivers/char/drm/radeon_irq.c
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Diffstat (limited to 'drivers/char/drm/radeon_irq.c')
-rw-r--r--drivers/char/drm/radeon_irq.c315
1 files changed, 0 insertions, 315 deletions
diff --git a/drivers/char/drm/radeon_irq.c b/drivers/char/drm/radeon_irq.c
deleted file mode 100644
index 507d6b747a13..000000000000
--- a/drivers/char/drm/radeon_irq.c
+++ /dev/null
@@ -1,315 +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 void radeon_irq_set_state(struct drm_device *dev, u32 mask, int state)
-{
- drm_radeon_private_t *dev_priv = dev->dev_private;
-
- if (state)
- dev_priv->irq_enable_reg |= mask;
- else
- dev_priv->irq_enable_reg &= ~mask;
-
- RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
-}
-
-int radeon_enable_vblank(struct drm_device *dev, int crtc)
-{
- switch (crtc) {
- case 0:
- radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 1);
- break;
- case 1:
- radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 1);
- break;
- default:
- DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
- crtc);
- return EINVAL;
- }
-
- return 0;
-}
-
-void radeon_disable_vblank(struct drm_device *dev, int crtc)
-{
- switch (crtc) {
- case 0:
- radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 0);
- break;
- case 1:
- radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 0);
- break;
- default:
- DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
- crtc);
- break;
- }
-}
-
-static __inline__ u32 radeon_acknowledge_irqs(drm_radeon_private_t * dev_priv)
-{
- u32 irqs = RADEON_READ(RADEON_GEN_INT_STATUS) &
- (RADEON_SW_INT_TEST | RADEON_CRTC_VBLANK_STAT |
- RADEON_CRTC2_VBLANK_STAT);
-
- 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);
- 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)
- drm_handle_vblank(dev, 0);
- if (stat & RADEON_CRTC2_VBLANK_STAT)
- drm_handle_vblank(dev, 1);
-
- 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;
-}
-
-u32 radeon_get_vblank_counter(struct drm_device *dev, int crtc)
-{
- drm_radeon_private_t *dev_priv = dev->dev_private;
- u32 crtc_cnt_reg, crtc_status_reg;
-
- if (!dev_priv) {
- DRM_ERROR("called with no initialization\n");
- return -EINVAL;
- }
-
- if (crtc == 0) {
- crtc_cnt_reg = RADEON_CRTC_CRNT_FRAME;
- crtc_status_reg = RADEON_CRTC_STATUS;
- } else if (crtc == 1) {
- crtc_cnt_reg = RADEON_CRTC2_CRNT_FRAME;
- crtc_status_reg = RADEON_CRTC2_STATUS;
- } else {
- return -EINVAL;
- }
-
- return RADEON_READ(crtc_cnt_reg) + (RADEON_READ(crtc_status_reg) & 1);
-}
-
-/* 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);
-}
-
-/* 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);
-}
-
-int radeon_driver_irq_postinstall(struct drm_device * dev)
-{
- drm_radeon_private_t *dev_priv =
- (drm_radeon_private_t *) dev->dev_private;
- int ret;
-
- atomic_set(&dev_priv->swi_emitted, 0);
- DRM_INIT_WAITQUEUE(&dev_priv->swi_queue);
-
- ret = drm_vblank_init(dev, 2);
- if (ret)
- return ret;
-
- dev->max_vblank_count = 0x001fffff;
-
- radeon_irq_set_state(dev, RADEON_SW_INT_ENABLE, 1);
-
- return 0;
-}
-
-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;
- return 0;
-}
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