void savage_reclaim_buffers(struct drm_device *dev, struct drm_file *file_priv)
{
struct drm_device_dma *dma = dev->dma;
drm_savage_private_t *dev_priv = dev->dev_private;
int i;
if (!dma)
return;
if (!dev_priv)
return;
if (!dma->buflist)
return;
/*i830_flush_queue(dev); */
for (i = 0; i < dma->buf_count; i++) {
struct drm_buf *buf = dma->buflist[i];
drm_savage_buf_priv_t *buf_priv = buf->dev_private;
if (buf->file_priv == file_priv && buf_priv &&
buf_priv->next == NULL && buf_priv->prev == NULL) {
uint16_t event;
DRM_DEBUG("reclaimed from client\n");
event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D);
SET_AGE(&buf_priv->age, event, dev_priv->event_wrap);
savage_freelist_put(dev, buf);
}
}
drm_core_reclaim_buffers(dev, file_priv);
}
static int savage_bci_event_emit(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_savage_private_t *dev_priv = dev->dev_private;
drm_savage_event_emit_t *event = data;
DRM_DEBUG("\n");
LOCK_TEST_WITH_RETURN(dev, file_priv);
event->count = savage_bci_emit_event(dev_priv, event->flags);
event->count |= dev_priv->event_wrap << 16;
return 0;
}
void savage_dma_reset(drm_savage_private_t * dev_priv)
{
uint16_t event;
unsigned int wrap, i;
event = savage_bci_emit_event(dev_priv, 0);
wrap = dev_priv->event_wrap;
for (i = 0; i < dev_priv->nr_dma_pages; ++i) {
SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
dev_priv->dma_pages[i].used = 0;
dev_priv->dma_pages[i].flushed = 0;
}
SET_AGE(&dev_priv->last_dma_age, event, wrap);
dev_priv->first_dma_page = dev_priv->current_dma_page = 0;
}
static int savage_bci_event_emit(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_savage_private_t *dev_priv = dev->dev_private;
drm_savage_event_emit_t event;
DRM_DEBUG("\n");
LOCK_TEST_WITH_RETURN(dev, filp);
DRM_COPY_FROM_USER_IOCTL(event, (drm_savage_event_emit_t __user *)data,
sizeof(event));
event.count = savage_bci_emit_event(dev_priv, event.flags);
event.count |= dev_priv->event_wrap << 16;
DRM_COPY_TO_USER_IOCTL(&((drm_savage_event_emit_t __user *)data)->count,
event.count, sizeof(event.count));
return 0;
}
void savage_reclaim_buffers(struct drm_device *dev, struct drm_file *file_priv)
{
struct drm_device_dma *dma = dev->dma;
drm_savage_private_t *dev_priv = dev->dev_private;
int release_idlelock = 0;
int i;
if (!dma)
return;
if (!dev_priv)
return;
if (!dma->buflist)
return;
if (file_priv->master && file_priv->master->lock.hw_lock) {
drm_idlelock_take(&file_priv->master->lock);
release_idlelock = 1;
}
for (i = 0; i < dma->buf_count; i++) {
struct drm_buf *buf = dma->buflist[i];
drm_savage_buf_priv_t *buf_priv = buf->dev_private;
if (buf->file_priv == file_priv && buf_priv &&
buf_priv->next == NULL && buf_priv->prev == NULL) {
uint16_t event;
DRM_DEBUG("reclaimed from client\n");
event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D);
SET_AGE(&buf_priv->age, event, dev_priv->event_wrap);
savage_freelist_put(dev, buf);
}
}
if (release_idlelock)
drm_idlelock_release(&file_priv->master->lock);
}
static void savage_dma_flush(drm_savage_private_t * dev_priv)
{
unsigned int first = dev_priv->first_dma_page;
unsigned int cur = dev_priv->current_dma_page;
uint16_t event;
unsigned int wrap, pad, align, len, i;
unsigned long phys_addr;
BCI_LOCALS;
if (first == cur &&
dev_priv->dma_pages[cur].used == dev_priv->dma_pages[cur].flushed)
return;
/* pad length to multiples of 2 entries
* align start of next DMA block to multiles of 8 entries */
pad = -dev_priv->dma_pages[cur].used & 1;
align = -(dev_priv->dma_pages[cur].used + pad) & 7;
DRM_DEBUG("first=%u, cur=%u, first->flushed=%u, cur->used=%u, "
"pad=%u, align=%u\n",
first, cur, dev_priv->dma_pages[first].flushed,
dev_priv->dma_pages[cur].used, pad, align);
/* pad with noops */
if (pad) {
uint32_t *dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
cur * SAVAGE_DMA_PAGE_SIZE + dev_priv->dma_pages[cur].used;
dev_priv->dma_pages[cur].used += pad;
while (pad != 0) {
*dma_ptr++ = BCI_CMD_WAIT;
pad--;
}
}
DRM_MEMORYBARRIER();
/* do flush ... */
phys_addr = dev_priv->cmd_dma->offset +
(first * SAVAGE_DMA_PAGE_SIZE +
dev_priv->dma_pages[first].flushed) * 4;
len = (cur - first) * SAVAGE_DMA_PAGE_SIZE +
dev_priv->dma_pages[cur].used - dev_priv->dma_pages[first].flushed;
DRM_DEBUG("phys_addr=%lx, len=%u\n",
phys_addr | dev_priv->dma_type, len);
BEGIN_BCI(3);
BCI_SET_REGISTERS(SAVAGE_DMABUFADDR, 1);
BCI_WRITE(phys_addr | dev_priv->dma_type);
BCI_DMA(len);
/* fix alignment of the start of the next block */
dev_priv->dma_pages[cur].used += align;
/* age DMA pages */
event = savage_bci_emit_event(dev_priv, 0);
wrap = dev_priv->event_wrap;
for (i = first; i < cur; ++i) {
SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
dev_priv->dma_pages[i].used = 0;
dev_priv->dma_pages[i].flushed = 0;
}
/* age the current page only when it's full */
if (dev_priv->dma_pages[cur].used == SAVAGE_DMA_PAGE_SIZE) {
SET_AGE(&dev_priv->dma_pages[cur].age, event, wrap);
dev_priv->dma_pages[cur].used = 0;
dev_priv->dma_pages[cur].flushed = 0;
/* advance to next page */
cur++;
if (cur == dev_priv->nr_dma_pages)
cur = 0;
dev_priv->first_dma_page = dev_priv->current_dma_page = cur;
} else {
dev_priv->first_dma_page = cur;
dev_priv->dma_pages[cur].flushed = dev_priv->dma_pages[i].used;
}
SET_AGE(&dev_priv->last_dma_age, event, wrap);
DRM_DEBUG("first=cur=%u, cur->used=%u, cur->flushed=%u\n", cur,
dev_priv->dma_pages[cur].used,
dev_priv->dma_pages[cur].flushed);
}
