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authorKristian Høgsberg <krh@bitplanet.net>2009-11-17 09:46:56 -0500
committerKristian Høgsberg <krh@bitplanet.net>2009-11-17 10:54:11 -0500
commit9dd3613073aa2491cef440725fdfa0cf1e8f1a42 (patch)
tree956c84be2fae4b4e6de2840a94d30dffa6573066 /bsd-core/drm_irq.c
parenta66cf9ce68bdf9bd887f91a38ced4b59c129b3c7 (diff)
Drop shared-core, bsd-core, linux-core and scripts subdirs
Diffstat (limited to 'bsd-core/drm_irq.c')
-rw-r--r--bsd-core/drm_irq.c499
1 files changed, 0 insertions, 499 deletions
diff --git a/bsd-core/drm_irq.c b/bsd-core/drm_irq.c
deleted file mode 100644
index 2ca4275e..00000000
--- a/bsd-core/drm_irq.c
+++ /dev/null
@@ -1,499 +0,0 @@
-/*-
- * 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
- * ERIC ANHOLT 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>
- *
- */
-
-/** @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(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_irq_busid *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)
- return EINVAL;
-
- irq->irq = dev->irq;
-
- DRM_DEBUG("%d:%d:%d => IRQ %d\n",
- irq->busnum, irq->devnum, irq->funcnum, irq->irq);
-
- return 0;
-}
-
-static irqreturn_t
-drm_irq_handler_wrap(DRM_IRQ_ARGS)
-{
- struct drm_device *dev = arg;
-
- DRM_SPINLOCK(&dev->irq_lock);
- dev->driver->irq_handler(arg);
- DRM_SPINUNLOCK(&dev->irq_lock);
-}
-
-static void vblank_disable_fn(void *arg)
-{
- struct drm_device *dev = (struct drm_device *)arg;
- int i;
-
- if (callout_pending(&dev->vblank_disable_timer)) {
- /* callout was reset */
- return;
- }
- if (!callout_active(&dev->vblank_disable_timer)) {
- /* callout was stopped */
- return;
- }
- callout_deactivate(&dev->vblank_disable_timer);
-
- DRM_DEBUG("vblank_disable_allowed=%d\n", dev->vblank_disable_allowed);
- if (!dev->vblank_disable_allowed)
- return;
-
- for (i = 0; i < dev->num_crtcs; i++) {
- if (atomic_read(&dev->vblank[i].refcount) == 0 &&
- dev->vblank[i].enabled) {
- DRM_DEBUG("disabling vblank on crtc %d\n", i);
- dev->vblank[i].last =
- dev->driver->get_vblank_counter(dev, i);
- dev->driver->disable_vblank(dev, i);
- dev->vblank[i].enabled = 0;
- }
- }
-}
-
-void drm_vblank_cleanup(struct drm_device *dev)
-{
- unsigned long irqflags;
-
- /* Bail if the driver didn't call drm_vblank_init() */
- if (dev->num_crtcs == 0)
- return;
-
- DRM_SPINLOCK_IRQSAVE(&dev->vbl_lock, irqflags);
- callout_stop(&dev->vblank_disable_timer);
- DRM_SPINUNLOCK_IRQRESTORE(&dev->vbl_lock, irqflags);
-
- callout_drain(&dev->vblank_disable_timer);
-
- vblank_disable_fn((void *)dev);
-
- free(dev->vblank, DRM_MEM_DRIVER);
-
- dev->num_crtcs = 0;
-}
-
-int drm_vblank_init(struct drm_device *dev, int num_crtcs)
-{
- int i, ret = ENOMEM;
-
- callout_init_mtx(&dev->vblank_disable_timer, &dev->vbl_lock, 0);
- atomic_set(&dev->vbl_signal_pending, 0);
- dev->num_crtcs = num_crtcs;
-
- dev->vblank = malloc(sizeof(struct drm_vblank_info) * num_crtcs,
- DRM_MEM_DRIVER, M_NOWAIT | M_ZERO);
- if (!dev->vblank)
- goto err;
-
- DRM_DEBUG("\n");
-
- /* Zero per-crtc vblank stuff */
- for (i = 0; i < num_crtcs; i++) {
- DRM_INIT_WAITQUEUE(&dev->vblank[i].queue);
- TAILQ_INIT(&dev->vblank[i].sigs);
- atomic_set(&dev->vblank[i].count, 0);
- atomic_set(&dev->vblank[i].refcount, 0);
- }
-
- dev->vblank_disable_allowed = 0;
-
- return 0;
-
-err:
- drm_vblank_cleanup(dev);
- return ret;
-}
-
-int drm_irq_install(struct drm_device *dev)
-{
- int retcode;
-
- if (dev->irq == 0 || dev->dev_private == NULL)
- return EINVAL;
-
- DRM_DEBUG("irq=%d\n", dev->irq);
-
- DRM_LOCK();
- if (dev->irq_enabled) {
- DRM_UNLOCK();
- return EBUSY;
- }
- dev->irq_enabled = 1;
-
- dev->context_flag = 0;
-
- /* Before installing handler */
- dev->driver->irq_preinstall(dev);
- DRM_UNLOCK();
-
- /* Install handler */
-#if __FreeBSD_version >= 700031
- retcode = bus_setup_intr(dev->device, dev->irqr,
- INTR_TYPE_TTY | INTR_MPSAFE,
- NULL, drm_irq_handler_wrap, dev, &dev->irqh);
-#else
- retcode = bus_setup_intr(dev->device, dev->irqr,
- INTR_TYPE_TTY | INTR_MPSAFE,
- drm_irq_handler_wrap, dev, &dev->irqh);
-#endif
- if (retcode != 0)
- goto err;
-
- /* After installing handler */
- DRM_LOCK();
- dev->driver->irq_postinstall(dev);
- DRM_UNLOCK();
-
- return 0;
-err:
- DRM_LOCK();
- dev->irq_enabled = 0;
- DRM_UNLOCK();
-
- return retcode;
-}
-
-int drm_irq_uninstall(struct drm_device *dev)
-{
- if (!dev->irq_enabled)
- return EINVAL;
-
- dev->irq_enabled = 0;
-
- DRM_DEBUG("irq=%d\n", dev->irq);
-
- dev->driver->irq_uninstall(dev);
-
- DRM_UNLOCK();
- bus_teardown_intr(dev->device, dev->irqr, dev->irqh);
- DRM_LOCK();
-
- return 0;
-}
-
-int drm_control(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- struct drm_control *ctl = data;
- int err;
-
- switch (ctl->func) {
- case DRM_INST_HANDLER:
- /* Handle drivers whose DRM used to require IRQ setup but the
- * no longer does.
- */
- if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
- return 0;
- if (dev->if_version < DRM_IF_VERSION(1, 2) &&
- ctl->irq != dev->irq)
- return EINVAL;
- return drm_irq_install(dev);
- case DRM_UNINST_HANDLER:
- if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
- return 0;
- DRM_LOCK();
- err = drm_irq_uninstall(dev);
- DRM_UNLOCK();
- return err;
- default:
- return EINVAL;
- }
-}
-
-u32 drm_vblank_count(struct drm_device *dev, int crtc)
-{
- return atomic_read(&dev->vblank[crtc].count);
-}
-
-static void drm_update_vblank_count(struct drm_device *dev, int crtc)
-{
- u32 cur_vblank, diff;
-
- /*
- * Interrupts were disabled prior to this call, so deal with counter
- * wrap if needed.
- * NOTE! It's possible we lost a full dev->max_vblank_count events
- * here if the register is small or we had vblank interrupts off for
- * a long time.
- */
- cur_vblank = dev->driver->get_vblank_counter(dev, crtc);
- diff = cur_vblank - dev->vblank[crtc].last;
- if (cur_vblank < dev->vblank[crtc].last) {
- diff += dev->max_vblank_count;
-
- DRM_DEBUG("vblank[%d].last=0x%x, cur_vblank=0x%x => diff=0x%x\n",
- crtc, dev->vblank[crtc].last, cur_vblank, diff);
- }
-
- DRM_DEBUG("enabling vblank interrupts on crtc %d, missed %d\n",
- crtc, diff);
-
- atomic_add(diff, &dev->vblank[crtc].count);
-}
-
-int drm_vblank_get(struct drm_device *dev, int crtc)
-{
- unsigned long irqflags;
- int ret = 0;
-
- DRM_SPINLOCK_IRQSAVE(&dev->vbl_lock, irqflags);
- /* Going from 0->1 means we have to enable interrupts again */
- atomic_add_acq_int(&dev->vblank[crtc].refcount, 1);
- DRM_DEBUG("vblank refcount = %d\n", dev->vblank[crtc].refcount);
- if (dev->vblank[crtc].refcount == 1 &&
- !dev->vblank[crtc].enabled) {
- ret = dev->driver->enable_vblank(dev, crtc);
- if (ret)
- atomic_dec(&dev->vblank[crtc].refcount);
- else {
- dev->vblank[crtc].enabled = 1;
- drm_update_vblank_count(dev, crtc);
- }
- }
- DRM_SPINUNLOCK_IRQRESTORE(&dev->vbl_lock, irqflags);
-
- return ret;
-}
-
-void drm_vblank_put(struct drm_device *dev, int crtc)
-{
- unsigned long irqflags;
-
- DRM_SPINLOCK_IRQSAVE(&dev->vbl_lock, irqflags);
- /* Last user schedules interrupt disable */
- atomic_subtract_acq_int(&dev->vblank[crtc].refcount, 1);
- DRM_DEBUG("vblank refcount = %d\n", dev->vblank[crtc].refcount);
- if (dev->vblank[crtc].refcount == 0)
- callout_reset(&dev->vblank_disable_timer, 5 * DRM_HZ,
- (timeout_t *)vblank_disable_fn, (void *)dev);
- DRM_SPINUNLOCK_IRQRESTORE(&dev->vbl_lock, irqflags);
-}
-
-int drm_modeset_ctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_modeset_ctl *modeset = data;
- unsigned long irqflags;
- int crtc, ret = 0;
-
- DRM_DEBUG("num_crtcs=%d\n", dev->num_crtcs);
- /* If drm_vblank_init() hasn't been called yet, just no-op */
- if (!dev->num_crtcs)
- goto out;
-
- crtc = modeset->crtc;
- DRM_DEBUG("crtc=%d\n", crtc);
- if (crtc >= dev->num_crtcs) {
- ret = EINVAL;
- goto out;
- }
-
- /*
- * To avoid all the problems that might happen if interrupts
- * were enabled/disabled around or between these calls, we just
- * have the kernel take a reference on the CRTC (just once though
- * to avoid corrupting the count if multiple, mismatch calls occur),
- * so that interrupts remain enabled in the interim.
- */
- switch (modeset->cmd) {
- case _DRM_PRE_MODESET:
- DRM_DEBUG("pre-modeset\n");
- if (!dev->vblank[crtc].inmodeset) {
- dev->vblank[crtc].inmodeset = 1;
- drm_vblank_get(dev, crtc);
- }
- break;
- case _DRM_POST_MODESET:
- DRM_DEBUG("post-modeset\n");
- if (dev->vblank[crtc].inmodeset) {
- DRM_SPINLOCK_IRQSAVE(&dev->vbl_lock, irqflags);
- dev->vblank_disable_allowed = 1;
- dev->vblank[crtc].inmodeset = 0;
- DRM_SPINUNLOCK_IRQRESTORE(&dev->vbl_lock, irqflags);
- drm_vblank_put(dev, crtc);
- }
- break;
- default:
- ret = EINVAL;
- break;
- }
-
-out:
- return ret;
-}
-
-int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- union drm_wait_vblank *vblwait = data;
- unsigned int flags, seq, crtc;
- int ret = 0;
-
- if (!dev->irq_enabled)
- return EINVAL;
-
- if (vblwait->request.type &
- ~(_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK)) {
- DRM_ERROR("Unsupported type value 0x%x, supported mask 0x%x\n",
- vblwait->request.type,
- (_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK));
- return EINVAL;
- }
-
- flags = vblwait->request.type & _DRM_VBLANK_FLAGS_MASK;
- crtc = flags & _DRM_VBLANK_SECONDARY ? 1 : 0;
-
- if (crtc >= dev->num_crtcs)
- return EINVAL;
-
- ret = drm_vblank_get(dev, crtc);
- if (ret) {
- DRM_ERROR("failed to acquire vblank counter, %d\n", ret);
- return ret;
- }
- seq = drm_vblank_count(dev, crtc);
-
- switch (vblwait->request.type & _DRM_VBLANK_TYPES_MASK) {
- case _DRM_VBLANK_RELATIVE:
- vblwait->request.sequence += seq;
- vblwait->request.type &= ~_DRM_VBLANK_RELATIVE;
- case _DRM_VBLANK_ABSOLUTE:
- break;
- default:
- ret = EINVAL;
- goto done;
- }
-
- if ((flags & _DRM_VBLANK_NEXTONMISS) &&
- (seq - vblwait->request.sequence) <= (1<<23)) {
- vblwait->request.sequence = seq + 1;
- }
-
- if (flags & _DRM_VBLANK_SIGNAL) {
-#if 0 /* disabled */
- drm_vbl_sig_t *vbl_sig = malloc(sizeof(drm_vbl_sig_t),
- DRM_MEM_DRIVER, M_NOWAIT | M_ZERO);
- if (vbl_sig == NULL)
- return ENOMEM;
-
- 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 {
- DRM_DEBUG("waiting on vblank count %d, crtc %d\n",
- vblwait->request.sequence, crtc);
- for ( ret = 0 ; !ret && !((drm_vblank_count(dev, crtc) -
- vblwait->request.sequence) <= (1 << 23)) ; ) {
- mtx_lock(&dev->irq_lock);
- if (!((drm_vblank_count(dev, crtc) -
- vblwait->request.sequence) <= (1 << 23)))
- ret = mtx_sleep(&dev->vblank[crtc].queue,
- &dev->irq_lock, PCATCH, "vblwtq",
- 3 * DRM_HZ);
- mtx_unlock(&dev->irq_lock);
- }
-
- DRM_DEBUG("return = %d\n", ret);
- if (ret != EINTR) {
- struct timeval now;
-
- microtime(&now);
- vblwait->reply.tval_sec = now.tv_sec;
- vblwait->reply.tval_usec = now.tv_usec;
- vblwait->reply.sequence = drm_vblank_count(dev, crtc);
- DRM_DEBUG("returning %d to client\n",
- vblwait->reply.sequence);
- } else {
- DRM_DEBUG("vblank wait interrupted by signal\n");
- }
- }
-
-done:
- drm_vblank_put(dev, crtc);
- return ret;
-}
-
-void drm_vbl_send_signals(struct drm_device *dev, int crtc)
-{
-}
-
-#if 0 /* disabled */
-void drm_vbl_send_signals(struct drm_device *dev, int crtc )
-{
- drm_vbl_sig_t *vbl_sig;
- unsigned int vbl_seq = atomic_read( &dev->vbl_received );
- struct proc *p;
-
- 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;
- }
-}
-#endif
-
-void drm_handle_vblank(struct drm_device *dev, int crtc)
-{
- atomic_inc(&dev->vblank[crtc].count);
- DRM_WAKEUP(&dev->vblank[crtc].queue);
- drm_vbl_send_signals(dev, crtc);
-}
-