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Diffstat (limited to 'bsd-core/drm_irq.c')
-rw-r--r--bsd-core/drm_irq.c138
1 files changed, 86 insertions, 52 deletions
diff --git a/bsd-core/drm_irq.c b/bsd-core/drm_irq.c
index f7da5ed7..0772445a 100644
--- a/bsd-core/drm_irq.c
+++ b/bsd-core/drm_irq.c
@@ -1,6 +1,3 @@
-/* drm_irq.c -- IRQ IOCTL and function support
- * Created: Fri Oct 18 2003 by anholt@FreeBSD.org
- */
/*-
* Copyright 2003 Eric Anholt
* All Rights Reserved.
@@ -28,28 +25,30 @@
*
*/
+/** @file drm_irq.c
+ * Support code for handling setup/teardown of interrupt handlers and
+ * handing interrupt handlers off to the drivers.
+ */
+
#include "drmP.h"
#include "drm.h"
-int drm_irq_by_busid(DRM_IOCTL_ARGS)
-{
- DRM_DEVICE;
- drm_irq_busid_t irq;
+static void drm_locked_task(void *context, int pending __unused);
- DRM_COPY_FROM_USER_IOCTL(irq, (drm_irq_busid_t *)data, sizeof(irq));
+int drm_irq_by_busid(drm_device_t *dev, void *data, struct drm_file *file_priv)
+{
+ drm_irq_busid_t *irq = data;
- if ((irq.busnum >> 8) != dev->pci_domain ||
- (irq.busnum & 0xff) != dev->pci_bus ||
- irq.devnum != dev->pci_slot ||
- irq.funcnum != dev->pci_func)
+ if ((irq->busnum >> 8) != dev->pci_domain ||
+ (irq->busnum & 0xff) != dev->pci_bus ||
+ irq->devnum != dev->pci_slot ||
+ irq->funcnum != dev->pci_func)
return EINVAL;
- irq.irq = dev->irq;
+ irq->irq = dev->irq;
DRM_DEBUG("%d:%d:%d => IRQ %d\n",
- irq.busnum, irq.devnum, irq.funcnum, irq.irq);
-
- DRM_COPY_TO_USER_IOCTL( (drm_irq_busid_t *)data, irq, sizeof(irq) );
+ irq->busnum, irq->devnum, irq->funcnum, irq->irq);
return 0;
}
@@ -74,20 +73,20 @@ int drm_irq_install(drm_device_t *dev)
#endif
if (dev->irq == 0 || dev->dev_private == NULL)
- return DRM_ERR(EINVAL);
+ return EINVAL;
DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, dev->irq );
DRM_LOCK();
if (dev->irq_enabled) {
DRM_UNLOCK();
- return DRM_ERR(EBUSY);
+ return EBUSY;
}
dev->irq_enabled = 1;
dev->context_flag = 0;
- DRM_SPININIT(dev->irq_lock, "DRM IRQ lock");
+ DRM_SPININIT(&dev->irq_lock, "DRM IRQ lock");
/* Before installing handler */
dev->driver.irq_preinstall(dev);
@@ -131,6 +130,7 @@ int drm_irq_install(drm_device_t *dev)
dev->driver.irq_postinstall(dev);
DRM_UNLOCK();
+ TASK_INIT(&dev->locked_task, 0, drm_locked_task, dev);
return 0;
err:
DRM_LOCK();
@@ -142,7 +142,7 @@ err:
dev->irqrid = 0;
}
#endif
- DRM_SPINUNINIT(dev->irq_lock);
+ DRM_SPINUNINIT(&dev->irq_lock);
DRM_UNLOCK();
return retcode;
}
@@ -154,7 +154,7 @@ int drm_irq_uninstall(drm_device_t *dev)
#endif
if (!dev->irq_enabled)
- return DRM_ERR(EINVAL);
+ return EINVAL;
dev->irq_enabled = 0;
#ifdef __FreeBSD__
@@ -174,20 +174,17 @@ int drm_irq_uninstall(drm_device_t *dev)
#elif defined(__NetBSD__) || defined(__OpenBSD__)
pci_intr_disestablish(&dev->pa.pa_pc, dev->irqh);
#endif
- DRM_SPINUNINIT(dev->irq_lock);
+ DRM_SPINUNINIT(&dev->irq_lock);
return 0;
}
-int drm_control(DRM_IOCTL_ARGS)
+int drm_control(drm_device_t *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
- drm_control_t ctl;
+ drm_control_t *ctl = data;
int err;
- DRM_COPY_FROM_USER_IOCTL( ctl, (drm_control_t *) data, sizeof(ctl) );
-
- switch ( ctl.func ) {
+ switch ( ctl->func ) {
case DRM_INST_HANDLER:
/* Handle drivers whose DRM used to require IRQ setup but the
* no longer does.
@@ -195,8 +192,8 @@ int drm_control(DRM_IOCTL_ARGS)
if (!dev->driver.use_irq)
return 0;
if (dev->if_version < DRM_IF_VERSION(1, 2) &&
- ctl.irq != dev->irq)
- return DRM_ERR(EINVAL);
+ ctl->irq != dev->irq)
+ return EINVAL;
return drm_irq_install(dev);
case DRM_UNINST_HANDLER:
if (!dev->driver.use_irq)
@@ -206,29 +203,25 @@ int drm_control(DRM_IOCTL_ARGS)
DRM_UNLOCK();
return err;
default:
- return DRM_ERR(EINVAL);
+ return EINVAL;
}
}
-int drm_wait_vblank(DRM_IOCTL_ARGS)
+int drm_wait_vblank(drm_device_t *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
- drm_wait_vblank_t vblwait;
+ drm_wait_vblank_t *vblwait = data;
struct timeval now;
- int ret;
+ int ret, flags;
if (!dev->irq_enabled)
- return DRM_ERR(EINVAL);
-
- DRM_COPY_FROM_USER_IOCTL( vblwait, (drm_wait_vblank_t *)data,
- sizeof(vblwait) );
+ return EINVAL;
- if (vblwait.request.type & _DRM_VBLANK_RELATIVE) {
- vblwait.request.sequence += atomic_read(&dev->vbl_received);
- vblwait.request.type &= ~_DRM_VBLANK_RELATIVE;
+ 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;
+ flags = vblwait->request.type & _DRM_VBLANK_FLAGS_MASK;
if (flags & _DRM_VBLANK_SIGNAL) {
#if 0 /* disabled */
drm_vbl_sig_t *vbl_sig = malloc(sizeof(drm_vbl_sig_t), M_DRM,
@@ -236,11 +229,11 @@ int drm_wait_vblank(DRM_IOCTL_ARGS)
if (vbl_sig == NULL)
return ENOMEM;
- vbl_sig->sequence = vblwait.request.sequence;
- vbl_sig->signo = vblwait.request.signal;
+ 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);
+ vblwait->reply.sequence = atomic_read(&dev->vbl_received);
DRM_SPINLOCK(&dev->irq_lock);
TAILQ_INSERT_HEAD(&dev->vbl_sig_list, vbl_sig, link);
@@ -250,17 +243,16 @@ int drm_wait_vblank(DRM_IOCTL_ARGS)
ret = EINVAL;
} else {
DRM_LOCK();
- ret = dev->driver.vblank_wait(dev, &vblwait.request.sequence);
+ /* shared code returns -errno */
+ ret = -dev->driver.vblank_wait(dev,
+ &vblwait->request.sequence);
DRM_UNLOCK();
microtime(&now);
- vblwait.reply.tval_sec = now.tv_sec;
- vblwait.reply.tval_usec = now.tv_usec;
+ 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;
}
@@ -291,3 +283,45 @@ void drm_vbl_send_signals( drm_device_t *dev )
}
}
#endif
+
+static void drm_locked_task(void *context, int pending __unused)
+{
+ drm_device_t *dev = context;
+
+ DRM_LOCK();
+ for (;;) {
+ int ret;
+
+ if (drm_lock_take(&dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT))
+ {
+ dev->lock.file_priv = NULL; /* kernel owned */
+ dev->lock.lock_time = jiffies;
+ atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
+ break; /* Got lock */
+ }
+
+ /* Contention */
+#if defined(__FreeBSD__) && __FreeBSD_version > 500000
+ ret = msleep((void *)&dev->lock.lock_queue, &dev->dev_lock,
+ PZERO | PCATCH, "drmlk2", 0);
+#else
+ ret = tsleep((void *)&dev->lock.lock_queue, PZERO | PCATCH,
+ "drmlk2", 0);
+#endif
+ if (ret != 0)
+ return;
+ }
+ DRM_UNLOCK();
+
+ dev->locked_task_call(dev);
+
+ drm_lock_free(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT);
+}
+
+void
+drm_locked_tasklet(drm_device_t *dev, void (*tasklet)(drm_device_t *dev))
+{
+ dev->locked_task_call = tasklet;
+ taskqueue_enqueue(taskqueue_swi, &dev->locked_task);
+}
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