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Diffstat (limited to 'bsd-core/drm_dma.c')
-rw-r--r--bsd-core/drm_dma.c265
1 files changed, 0 insertions, 265 deletions
diff --git a/bsd-core/drm_dma.c b/bsd-core/drm_dma.c
index 86e37b08..27ce05e3 100644
--- a/bsd-core/drm_dma.c
+++ b/bsd-core/drm_dma.c
@@ -171,271 +171,6 @@ void DRM(reclaim_buffers)(drm_device_t *dev, DRMFILE filp)
#endif
-/* GH: This is a big hack for now...
- */
-#if __HAVE_OLD_DMA
-
-void DRM(clear_next_buffer)(drm_device_t *dev)
-{
- drm_device_dma_t *dma = dev->dma;
-
- dma->next_buffer = NULL;
- if (dma->next_queue && !DRM_BUFCOUNT(&dma->next_queue->waitlist)) {
- DRM_WAKEUP_INT(&dma->next_queue->flush_queue);
- }
- dma->next_queue = NULL;
-}
-
-int DRM(select_queue)(drm_device_t *dev, void (*wrapper)(unsigned long))
-{
- int i;
- int candidate = -1;
- int j = jiffies;
-
- if (!dev) {
- DRM_ERROR("No device\n");
- return -1;
- }
- if (!dev->queuelist || !dev->queuelist[DRM_KERNEL_CONTEXT]) {
- /* This only happens between the time the
- interrupt is initialized and the time
- the queues are initialized. */
- return -1;
- }
-
- /* Doing "while locked" DMA? */
- if (DRM_WAITCOUNT(dev, DRM_KERNEL_CONTEXT)) {
- return DRM_KERNEL_CONTEXT;
- }
-
- /* If there are buffers on the last_context
- queue, and we have not been executing
- this context very long, continue to
- execute this context. */
- if (dev->last_switch <= j
- && dev->last_switch + DRM_TIME_SLICE > j
- && DRM_WAITCOUNT(dev, dev->last_context)) {
- return dev->last_context;
- }
-
- /* Otherwise, find a candidate */
- for (i = dev->last_checked + 1; i < dev->queue_count; i++) {
- if (DRM_WAITCOUNT(dev, i)) {
- candidate = dev->last_checked = i;
- break;
- }
- }
-
- if (candidate < 0) {
- for (i = 0; i < dev->queue_count; i++) {
- if (DRM_WAITCOUNT(dev, i)) {
- candidate = dev->last_checked = i;
- break;
- }
- }
- }
-
- if (wrapper
- && candidate >= 0
- && candidate != dev->last_context
- && dev->last_switch <= j
- && dev->last_switch + DRM_TIME_SLICE > j) {
- int s = splclock();
- if (dev->timer.c_time != dev->last_switch + DRM_TIME_SLICE) {
- callout_reset(&dev->timer,
- dev->last_switch + DRM_TIME_SLICE - j,
- (void (*)(void *))wrapper,
- dev);
- }
- splx(s);
- return -1;
- }
-
- return candidate;
-}
-
-
-int DRM(dma_enqueue)(drm_device_t *dev, drm_dma_t *d)
-{
- int i;
- drm_queue_t *q;
- drm_buf_t *buf;
- int idx;
- int while_locked = 0;
- drm_device_dma_t *dma = dev->dma;
- int error;
-
- DRM_DEBUG("%d\n", d->send_count);
-
- if (d->flags & _DRM_DMA_WHILE_LOCKED) {
- int context = dev->lock.hw_lock->lock;
-
- if (!_DRM_LOCK_IS_HELD(context)) {
- DRM_ERROR("No lock held during \"while locked\""
- " request\n");
- return DRM_ERR(EINVAL);
- }
- if (d->context != _DRM_LOCKING_CONTEXT(context)
- && _DRM_LOCKING_CONTEXT(context) != DRM_KERNEL_CONTEXT) {
- DRM_ERROR("Lock held by %d while %d makes"
- " \"while locked\" request\n",
- _DRM_LOCKING_CONTEXT(context),
- d->context);
- return DRM_ERR(EINVAL);
- }
- q = dev->queuelist[DRM_KERNEL_CONTEXT];
- while_locked = 1;
- } else {
- q = dev->queuelist[d->context];
- }
-
-
- atomic_inc(&q->use_count);
- if (atomic_read(&q->block_write)) {
- atomic_inc(&q->block_count);
- for (;;) {
- if (!atomic_read(&q->block_write)) break;
- error = tsleep(&q->block_write, PZERO|PCATCH,
- "dmawr", 0);
- if (error) {
- atomic_dec(&q->use_count);
- return error;
- }
- }
- atomic_dec(&q->block_count);
- }
-
- for (i = 0; i < d->send_count; i++) {
- idx = d->send_indices[i];
- if (idx < 0 || idx >= dma->buf_count) {
- atomic_dec(&q->use_count);
- DRM_ERROR("Index %d (of %d max)\n",
- d->send_indices[i], dma->buf_count - 1);
- return DRM_ERR(EINVAL);
- }
- buf = dma->buflist[ idx ];
- if (buf->pid != DRM_CURRENTPID) {
- atomic_dec(&q->use_count);
- DRM_ERROR("Process %d using buffer owned by %d\n",
- DRM_CURRENTPID, buf->pid);
- return DRM_ERR(EINVAL);
- }
- if (buf->list != DRM_LIST_NONE) {
- atomic_dec(&q->use_count);
- DRM_ERROR("Process %d using buffer %d on list %d\n",
- DRM_CURRENTPID, buf->idx, buf->list);
- }
- buf->used = d->send_sizes[i];
- buf->while_locked = while_locked;
- buf->context = d->context;
- if (!buf->used) {
- DRM_ERROR("Queueing 0 length buffer\n");
- }
- if (buf->pending) {
- atomic_dec(&q->use_count);
- DRM_ERROR("Queueing pending buffer:"
- " buffer %d, offset %d\n",
- d->send_indices[i], i);
- return DRM_ERR(EINVAL);
- }
- if (buf->waiting) {
- atomic_dec(&q->use_count);
- DRM_ERROR("Queueing waiting buffer:"
- " buffer %d, offset %d\n",
- d->send_indices[i], i);
- return DRM_ERR(EINVAL);
- }
- buf->waiting = 1;
- if (atomic_read(&q->use_count) == 1
- || atomic_read(&q->finalization)) {
- DRM(free_buffer)(dev, buf);
- } else {
- DRM(waitlist_put)(&q->waitlist, buf);
- atomic_inc(&q->total_queued);
- }
- }
- atomic_dec(&q->use_count);
-
- return 0;
-}
-
-static int DRM(dma_get_buffers_of_order)(drm_device_t *dev, drm_dma_t *d,
- int order)
-{
- int i;
- drm_buf_t *buf;
- drm_device_dma_t *dma = dev->dma;
-
- for (i = d->granted_count; i < d->request_count; i++) {
- buf = DRM(freelist_get)(&dma->bufs[order].freelist,
- d->flags & _DRM_DMA_WAIT);
- if (!buf) break;
- if (buf->pending || buf->waiting) {
- DRM_ERROR("Free buffer %d in use by %d (w%d, p%d)\n",
- buf->idx,
- buf->pid,
- buf->waiting,
- buf->pending);
- }
- buf->pid = DRM_CURRENTPID;
- if (DRM_COPY_TO_USER(&d->request_indices[i],
- &buf->idx,
- sizeof(buf->idx)))
- return DRM_ERR(EFAULT);
-
- if (DRM_COPY_TO_USER(&d->request_sizes[i],
- &buf->total,
- sizeof(buf->total)))
- return DRM_ERR(EFAULT);
-
- ++d->granted_count;
- }
- return 0;
-}
-
-
-int DRM(dma_get_buffers)(drm_device_t *dev, drm_dma_t *dma)
-{
- int order;
- int retcode = 0;
- int tmp_order;
-
- order = DRM(order)(dma->request_size);
-
- dma->granted_count = 0;
- retcode = DRM(dma_get_buffers_of_order)(dev, dma, order);
-
- if (dma->granted_count < dma->request_count
- && (dma->flags & _DRM_DMA_SMALLER_OK)) {
- for (tmp_order = order - 1;
- !retcode
- && dma->granted_count < dma->request_count
- && tmp_order >= DRM_MIN_ORDER;
- --tmp_order) {
-
- retcode = DRM(dma_get_buffers_of_order)(dev, dma,
- tmp_order);
- }
- }
-
- if (dma->granted_count < dma->request_count
- && (dma->flags & _DRM_DMA_LARGER_OK)) {
- for (tmp_order = order + 1;
- !retcode
- && dma->granted_count < dma->request_count
- && tmp_order <= DRM_MAX_ORDER;
- ++tmp_order) {
-
- retcode = DRM(dma_get_buffers_of_order)(dev, dma,
- tmp_order);
- }
- }
- return 0;
-}
-
-#endif /* __HAVE_OLD_DMA */
-
-
#if __HAVE_DMA_IRQ
int DRM(irq_install)( drm_device_t *dev, int irq )
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 22:30:07 +0000