--- old/usr/src/uts/intel/io/drm/radeon_irq.c	Sun May 28 15:47:16 2017
+++ /dev/null	Sun May 28 15:44:56 2017
@@ -1,376 +0,0 @@
-
-/*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- * Copyright (c) 2016 by Delphix. All rights reserved.
- */
-/* 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 "radeon_drm.h"
-#include "radeon_drv.h"
-#include "radeon_io32.h"
-
-static inline u32
-radeon_acknowledge_irqs(drm_radeon_private_t *dev_priv, u32 mask)
-{
-	uint32_t 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 *)(uintptr_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 | 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(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);
-}
-
-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;
-	atomic_t *counter;
-	if (!dev_priv) {
-		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
-		return (EINVAL);
-	}
-
-	/*
-	 * I don't know why reset Intr Status Register here,
-	 * it might miss intr. So, I remove the code which
-	 * exists in open source, and changes as follows:
-	 */
-
-	if (crtc == DRM_RADEON_VBLANK_CRTC1) {
-		counter = &dev->vbl_received;
-	} else if (crtc == DRM_RADEON_VBLANK_CRTC2) {
-		counter = &dev->vbl_received2;
-	} else
-		return (EINVAL);
-
-	dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
-
-	/*
-	 * Assume that the user has missed the current sequence number
-	 * by about a day rather than wanting 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.
- */
-/*ARGSUSED*/
-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, fpriv);
-
-	if (!dev_priv) {
-		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
-		return (EINVAL);
-	}
-
-#ifdef _MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_radeon_irq_emit_32_t emit32;
-
-		DRM_COPYFROM_WITH_RETURN(&emit32, (void *) data,
-		    sizeof (emit32));
-		emit.irq_seq = (void *)(uintptr_t)(emit32.irq_seq);
-	} else {
-#endif
-
-		DRM_COPYFROM_WITH_RETURN(&emit, (void *) data, sizeof (emit));
-#ifdef _MULTI_DATAMODEL
-}
-#endif
-
-	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.
- */
-/*ARGSUSED*/
-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 (EINVAL);
-	}
-
-	DRM_COPYFROM_WITH_RETURN(&irqwait, (void *) data, sizeof (irqwait));
-
-	return (radeon_wait_irq(dev, irqwait.irq_seq));
-}
-
-static void radeon_enable_interrupt(struct drm_device *dev)
-{
-	drm_radeon_private_t *dev_priv;
-
-	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
- */
-int
-radeon_driver_irq_preinstall(drm_device_t *dev)
-{
-	drm_radeon_private_t *dev_priv =
-	    (drm_radeon_private_t *)dev->dev_private;
-
-	if (!dev_priv->mmio)
-		return (EINVAL);
-
-	/* Disable *all* interrupts */
-	RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
-
-	/* Clear bits if they're already high */
-	(void) radeon_acknowledge_irqs(dev_priv,
-	    (RADEON_SW_INT_TEST_ACK | RADEON_CRTC_VBLANK_STAT |
-	    RADEON_CRTC2_VBLANK_STAT));
-
-	return (0);
-}
-
-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, DRM_INTR_PRI(dev));
-
-	radeon_enable_interrupt(dev);
-}
-
-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);
-	DRM_FINI_WAITQUEUE(&dev_priv->swi_queue);
-}
-
-int
-radeon_vblank_crtc_get(drm_device_t *dev)
-{
-	drm_radeon_private_t *dev_priv;
-	u32 flag;
-	u32 value;
-
-	dev_priv = (drm_radeon_private_t *)dev->dev_private;
-	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(drm_device_t *dev, int64_t value)
-{
-	drm_radeon_private_t *dev_priv;
-
-	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);
-}
