- Move IRQ functions from drm_dma.h to new drm_irq.h and disentangle them

    from __HAVE_DMA. This will be useful for adding vblank sync support to
    sis and tdfx. Rename dma_service to irq_handler, which is more
    accurately what it is.
- Fix the #if _HAVE_DMA_IRQ in radeon, r128, mga, i810, i830, gamma to have
    the right number of underscores. This may have been a problem in the
    case that the server died without doing its DRM_IOCTL_CONTROL to
    uninit.

1 files changed, 242 insertions, 0 deletions

diff --git a/bsd/drm_irq.h b/bsd/drm_irq.h
new file mode 100644
index 00000000..3366ff1c
--- /dev/null
+++ b/bsd/drm_irq.h
@@ -0,0 +1,242 @@
+/* drm_dma.c -- DMA IOCTL and function support
+ * Created: Fri Oct 18 2003 by anholt@FreeBSD.org
+ *
+ * Copyright 2003 Eric Anholt
+ * 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
+ * VA LINUX SYSTEMS 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:
+ *    Eric Anholt <anholt@FreeBSD.org>
+ *
+ */
+ 
+int DRM(irq_install)( drm_device_t *dev, int irq )
+{
+	int retcode;
+
+	if ( irq == 0 || dev->dev_private == NULL)
+		return DRM_ERR(EINVAL);
+
+	DRM_LOCK();
+	if ( dev->irq ) {
+		DRM_UNLOCK();
+		return DRM_ERR(EBUSY);
+	}
+	dev->irq = irq;
+	DRM_UNLOCK();
+
+	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, irq );
+
+	dev->context_flag = 0;
+
+	dev->dma->next_buffer = NULL;
+	dev->dma->this_buffer = NULL;
+
+#if __HAVE_IRQ_BH
+	TASK_INIT(&dev->task, 0, DRM(dma_immediate_bh), dev);
+#endif
+
+#if __HAVE_VBL_IRQ && 0 /* disabled */
+	DRM_SPININIT( dev->vbl_lock, "vblsig" );
+	TAILQ_INIT( &dev->vbl_sig_list );
+#endif
+
+				/* Before installing handler */
+	DRM(driver_irq_preinstall)( dev );
+
+				/* Install handler */
+	dev->irqrid = 0;
+#ifdef __FreeBSD__
+	dev->irqr = bus_alloc_resource(dev->device, SYS_RES_IRQ, &dev->irqrid,
+				      0, ~0, 1, RF_SHAREABLE);
+	if (!dev->irqr) {
+#elif defined(__NetBSD__)
+	if (pci_intr_map(&dev->pa, &dev->ih) != 0) {
+#endif
+		DRM_LOCK();
+		dev->irq = 0;
+		dev->irqrid = 0;
+		DRM_UNLOCK();
+		return ENOENT;
+	}
+	
+#ifdef __FreeBSD__
+#if __FreeBSD_version < 500000
+	retcode = bus_setup_intr(dev->device, dev->irqr, INTR_TYPE_TTY,
+				 DRM(irq_handler), dev, &dev->irqh);
+#else
+	retcode = bus_setup_intr(dev->device, dev->irqr, INTR_TYPE_TTY | INTR_MPSAFE,
+				 DRM(irq_handler), dev, &dev->irqh);
+#endif
+	if ( retcode ) {
+#elif defined(__NetBSD__)
+	dev->irqh = pci_intr_establish(&dev->pa.pa_pc, dev->ih, IPL_TTY,
+	    (irqreturn_t (*)(DRM_IRQ_ARGS))DRM(irq_handler), dev);
+	if ( !dev->irqh ) {
+#endif
+		DRM_LOCK();
+#ifdef __FreeBSD__
+		bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);
+#endif
+		dev->irq = 0;
+		dev->irqrid = 0;
+		DRM_UNLOCK();
+		return retcode;
+	}
+
+				/* After installing handler */
+	DRM(driver_irq_postinstall)( dev );
+
+	return 0;
+}
+
+int DRM(irq_uninstall)( drm_device_t *dev )
+{
+	int irq;
+	int irqrid;
+	
+	DRM_LOCK();
+	irq = dev->irq;
+	irqrid = dev->irqrid;
+	dev->irq = 0;
+	dev->irqrid = 0;
+	DRM_UNLOCK();
+
+	if ( !irq )
+		return DRM_ERR(EINVAL);
+
+	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, irq );
+
+	DRM(driver_irq_uninstall)( dev );
+
+#ifdef __FreeBSD__
+	bus_teardown_intr(dev->device, dev->irqr, dev->irqh);
+	bus_release_resource(dev->device, SYS_RES_IRQ, irqrid, dev->irqr);
+#elif defined(__NetBSD__)
+	pci_intr_disestablish(&dev->pa.pa_pc, dev->irqh);
+#endif
+
+	return 0;
+}
+
+int DRM(control)( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_control_t ctl;
+
+	DRM_COPY_FROM_USER_IOCTL( ctl, (drm_control_t *) data, sizeof(ctl) );
+
+	switch ( ctl.func ) {
+	case DRM_INST_HANDLER:
+		return DRM(irq_install)( dev, ctl.irq );
+	case DRM_UNINST_HANDLER:
+		return DRM(irq_uninstall)( dev );
+	default:
+		return DRM_ERR(EINVAL);
+	}
+}
+
+#if __HAVE_VBL_IRQ
+int DRM(wait_vblank)( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_wait_vblank_t vblwait;
+	struct timeval now;
+	int ret;
+
+	if (!dev->irq)
+		return DRM_ERR(EINVAL);
+
+	DRM_COPY_FROM_USER_IOCTL( vblwait, (drm_wait_vblank_t *)data,
+				  sizeof(vblwait) );
+
+	if (vblwait.request.type & _DRM_VBLANK_RELATIVE) {
+		vblwait.request.sequence += atomic_read(&dev->vbl_received);
+		vblwait.request.type &= ~_DRM_VBLANK_RELATIVE;
+	}
+
+	flags = vblwait.request.type & _DRM_VBLANK_FLAGS_MASK;
+	if (flags & _DRM_VBLANK_SIGNAL) {
+#if 0 /* disabled */
+		drm_vbl_sig_t *vbl_sig = DRM_MALLOC(sizeof(drm_vbl_sig_t));
+		if (vbl_sig == NULL)
+			return ENOMEM;
+		bzero(vbl_sig, sizeof(*vbl_sig));
+		
+		vbl_sig->sequence = vblwait.request.sequence;
+		vbl_sig->signo = vblwait.request.signal;
+		vbl_sig->pid = DRM_CURRENTPID;
+
+		vblwait.reply.sequence = atomic_read(&dev->vbl_received);
+		
+		DRM_SPINLOCK(&dev->vbl_lock);
+		TAILQ_INSERT_HEAD(&dev->vbl_sig_list, vbl_sig, link);
+		DRM_SPINUNLOCK(&dev->vbl_lock);
+		ret = 0;
+#endif
+		ret = EINVAL;
+	} else {
+		ret = DRM(vblank_wait)(dev, &vblwait.request.sequence);
+		
+		microtime(&now);
+		vblwait.reply.tval_sec = now.tv_sec;
+		vblwait.reply.tval_usec = now.tv_usec;
+	}
+
+	DRM_COPY_TO_USER_IOCTL( (drm_wait_vblank_t *)data, vblwait,
+				sizeof(vblwait) );
+
+	return ret;
+}
+
+void DRM(vbl_send_signals)(drm_device_t *dev)
+{
+}
+
+#if 0 /* disabled */
+void DRM(vbl_send_signals)( drm_device_t *dev )
+{
+	drm_vbl_sig_t *vbl_sig;
+	unsigned int vbl_seq = atomic_read( &dev->vbl_received );
+	struct proc *p;
+
+	DRM_SPINLOCK(&dev->vbl_lock);
+
+	vbl_sig = TAILQ_FIRST(&dev->vbl_sig_list);
+	while (vbl_sig != NULL) {
+		drm_vbl_sig_t *next = TAILQ_NEXT(vbl_sig, link);
+
+		if ( ( vbl_seq - vbl_sig->sequence ) <= (1<<23) ) {
+			p = pfind(vbl_sig->pid);
+			if (p != NULL)
+				psignal(p, vbl_sig->signo);
+
+			TAILQ_REMOVE(&dev->vbl_sig_list, vbl_sig, link);
+			DRM_FREE(vbl_sig,sizeof(*vbl_sig));
+		}
+		vbl_sig = next;
+	}
+
+	DRM_SPINUNLOCK(&dev->vbl_lock);
+}
+#endif
+
+#endif /*  __HAVE_VBL_IRQ */