/* via_dmablit.c -- PCI DMA BitBlt support for the VIA Unichrome/Pro
- *
+ *
* Copyright (C) 2005 Thomas Hellstrom, All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* 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 NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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:
+ * Authors:
* Thomas Hellstrom.
* Partially based on code obtained from Digeo Inc.
*/
/*
- * Unmaps the DMA mappings.
- * FIXME: Is this a NoOp on x86? Also
- * FIXME: What happens if this one is called and a pending blit has previously done
- * the same DMA mappings?
+ * Unmaps the DMA mappings.
+ * FIXME: Is this a NoOp on x86? Also
+ * FIXME: What happens if this one is called and a pending blit has previously done
+ * the same DMA mappings?
*/
#include "drmP.h"
int num_desc = vsg->num_desc;
unsigned cur_descriptor_page = num_desc / vsg->descriptors_per_page;
unsigned descriptor_this_page = num_desc % vsg->descriptors_per_page;
- drm_via_descriptor_t *desc_ptr = vsg->desc_pages[cur_descriptor_page] +
+ drm_via_descriptor_t *desc_ptr = vsg->desc_pages[cur_descriptor_page] +
descriptor_this_page;
dma_addr_t next = vsg->chain_start;
if (descriptor_this_page-- == 0) {
cur_descriptor_page--;
descriptor_this_page = vsg->descriptors_per_page - 1;
- desc_ptr = vsg->desc_pages[cur_descriptor_page] +
+ desc_ptr = vsg->desc_pages[cur_descriptor_page] +
descriptor_this_page;
}
dma_unmap_single(&pdev->dev, next, sizeof(*desc_ptr), DMA_TO_DEVICE);
static void
via_map_blit_for_device(struct pci_dev *pdev,
const drm_via_dmablit_t *xfer,
- drm_via_sg_info_t *vsg,
+ drm_via_sg_info_t *vsg,
int mode)
{
unsigned cur_descriptor_page = 0;
dma_addr_t next = 0 | VIA_DMA_DPR_EC;
drm_via_descriptor_t *desc_ptr = NULL;
- if (mode == 1)
+ if (mode == 1)
desc_ptr = vsg->desc_pages[cur_descriptor_page];
for (cur_line = 0; cur_line < xfer->num_lines; ++cur_line) {
line_len = xfer->line_length;
cur_fb = fb_addr;
cur_mem = mem_addr;
-
+
while (line_len > 0) {
remaining_len = min(PAGE_SIZE-VIA_PGOFF(cur_mem), line_len);
line_len -= remaining_len;
if (mode == 1) {
- desc_ptr->mem_addr =
- dma_map_page(&pdev->dev,
- vsg->pages[VIA_PFN(cur_mem) -
+ desc_ptr->mem_addr =
+ dma_map_page(&pdev->dev,
+ vsg->pages[VIA_PFN(cur_mem) -
VIA_PFN(first_addr)],
- VIA_PGOFF(cur_mem), remaining_len,
+ VIA_PGOFF(cur_mem), remaining_len,
vsg->direction);
desc_ptr->dev_addr = cur_fb;
-
+
desc_ptr->size = remaining_len;
desc_ptr->next = (uint32_t) next;
- next = dma_map_single(&pdev->dev, desc_ptr, sizeof(*desc_ptr),
+ next = dma_map_single(&pdev->dev, desc_ptr, sizeof(*desc_ptr),
DMA_TO_DEVICE);
desc_ptr++;
if (++num_descriptors_this_page >= vsg->descriptors_per_page) {
desc_ptr = vsg->desc_pages[++cur_descriptor_page];
}
}
-
+
num_desc++;
cur_mem += remaining_len;
cur_fb += remaining_len;
}
-
+
mem_addr += xfer->mem_stride;
fb_addr += xfer->fb_stride;
}
}
/*
- * Function that frees up all resources for a blit. It is usable even if the
+ * Function that frees up all resources for a blit. It is usable even if the
* blit info has only been partially built as long as the status enum is consistent
* with the actual status of the used resources.
*/
static void
-via_free_sg_info(struct pci_dev *pdev, drm_via_sg_info_t *vsg)
+via_free_sg_info(struct pci_dev *pdev, drm_via_sg_info_t *vsg)
{
struct page *page;
int i;
case dr_via_pages_locked:
for (i=0; i<vsg->num_pages; ++i) {
if ( NULL != (page = vsg->pages[i])) {
- if (! PageReserved(page) && (DMA_FROM_DEVICE == vsg->direction))
+ if (! PageReserved(page) && (DMA_FROM_DEVICE == vsg->direction))
SetPageDirty(page);
page_cache_release(page);
}
vsg->bounce_buffer = NULL;
}
vsg->free_on_sequence = 0;
-}
+}
/*
* Fire a blit engine.
*/
static void
-via_fire_dmablit(drm_device_t *dev, drm_via_sg_info_t *vsg, int engine)
+via_fire_dmablit(struct drm_device *dev, drm_via_sg_info_t *vsg, int engine)
{
drm_via_private_t *dev_priv = (drm_via_private_t *)dev->dev_private;
VIA_WRITE(VIA_PCI_DMA_MAR0 + engine*0x10, 0);
VIA_WRITE(VIA_PCI_DMA_DAR0 + engine*0x10, 0);
- VIA_WRITE(VIA_PCI_DMA_CSR0 + engine*0x04, VIA_DMA_CSR_DD | VIA_DMA_CSR_TD |
+ VIA_WRITE(VIA_PCI_DMA_CSR0 + engine*0x04, VIA_DMA_CSR_DD | VIA_DMA_CSR_TD |
VIA_DMA_CSR_DE);
VIA_WRITE(VIA_PCI_DMA_MR0 + engine*0x04, VIA_DMA_MR_CM | VIA_DMA_MR_TDIE);
VIA_WRITE(VIA_PCI_DMA_BCR0 + engine*0x10, 0);
VIA_WRITE(VIA_PCI_DMA_DPR0 + engine*0x10, vsg->chain_start);
+ DRM_WRITEMEMORYBARRIER();
VIA_WRITE(VIA_PCI_DMA_CSR0 + engine*0x04, VIA_DMA_CSR_DE | VIA_DMA_CSR_TS);
+ VIA_READ(VIA_PCI_DMA_CSR0 + engine*0x04);
}
/*
{
int ret;
unsigned long first_pfn = VIA_PFN(xfer->mem_addr);
- vsg->num_pages = VIA_PFN(xfer->mem_addr + (xfer->num_lines * xfer->mem_stride -1)) -
+ vsg->num_pages = VIA_PFN(xfer->mem_addr + (xfer->num_lines * xfer->mem_stride -1)) -
first_pfn + 1;
-
+
if (NULL == (vsg->pages = vmalloc(sizeof(struct page *) * vsg->num_pages)))
- return DRM_ERR(ENOMEM);
+ return -ENOMEM;
memset(vsg->pages, 0, sizeof(struct page *) * vsg->num_pages);
down_read(¤t->mm->mmap_sem);
ret = get_user_pages(current, current->mm,
up_read(¤t->mm->mmap_sem);
if (ret != vsg->num_pages) {
- if (ret < 0)
+ if (ret < 0)
return ret;
vsg->state = dr_via_pages_locked;
- return DRM_ERR(EINVAL);
+ return -EINVAL;
}
vsg->state = dr_via_pages_locked;
DRM_DEBUG("DMA pages locked\n");
* quite large for some blits, and pages don't need to be contingous.
*/
-static int
+static int
via_alloc_desc_pages(drm_via_sg_info_t *vsg)
{
int i;
-
+
vsg->descriptors_per_page = PAGE_SIZE / sizeof( drm_via_descriptor_t);
- vsg->num_desc_pages = (vsg->num_desc + vsg->descriptors_per_page - 1) /
+ vsg->num_desc_pages = (vsg->num_desc + vsg->descriptors_per_page - 1) /
vsg->descriptors_per_page;
- if (NULL == (vsg->desc_pages = kmalloc(sizeof(void *) * vsg->num_desc_pages, GFP_KERNEL)))
- return DRM_ERR(ENOMEM);
-
- memset(vsg->desc_pages, 0, sizeof(void *) * vsg->num_desc_pages);
+ if (NULL == (vsg->desc_pages = kcalloc(vsg->num_desc_pages, sizeof(void *), GFP_KERNEL)))
+ return -ENOMEM;
+
vsg->state = dr_via_desc_pages_alloc;
for (i=0; i<vsg->num_desc_pages; ++i) {
- if (NULL == (vsg->desc_pages[i] =
+ if (NULL == (vsg->desc_pages[i] =
(drm_via_descriptor_t *) __get_free_page(GFP_KERNEL)))
- return DRM_ERR(ENOMEM);
+ return -ENOMEM;
}
DRM_DEBUG("Allocated %d pages for %d descriptors.\n", vsg->num_desc_pages,
vsg->num_desc);
return 0;
}
-
+
static void
-via_abort_dmablit(drm_device_t *dev, int engine)
+via_abort_dmablit(struct drm_device *dev, int engine)
{
drm_via_private_t *dev_priv = (drm_via_private_t *)dev->dev_private;
}
static void
-via_dmablit_engine_off(drm_device_t *dev, int engine)
+via_dmablit_engine_off(struct drm_device *dev, int engine)
{
drm_via_private_t *dev_priv = (drm_via_private_t *)dev->dev_private;
- VIA_WRITE(VIA_PCI_DMA_CSR0 + engine*0x04, VIA_DMA_CSR_TD | VIA_DMA_CSR_DD);
+ VIA_WRITE(VIA_PCI_DMA_CSR0 + engine*0x04, VIA_DMA_CSR_TD | VIA_DMA_CSR_DD);
}
* task. Basically the task of the interrupt handler is to submit a new blit to the engine, while
* the workqueue task takes care of processing associated with the old blit.
*/
-
+
void
-via_dmablit_handler(drm_device_t *dev, int engine, int from_irq)
+via_dmablit_handler(struct drm_device *dev, int engine, int from_irq)
{
drm_via_private_t *dev_priv = (drm_via_private_t *)dev->dev_private;
drm_via_blitq_t *blitq = dev_priv->blit_queues + engine;
spin_lock_irqsave(&blitq->blit_lock, irqsave);
}
- done_transfer = blitq->is_active &&
+ done_transfer = blitq->is_active &&
(( status = VIA_READ(VIA_PCI_DMA_CSR0 + engine*0x04)) & VIA_DMA_CSR_TD);
- done_transfer = done_transfer || ( blitq->aborting && !(status & VIA_DMA_CSR_DE));
+ done_transfer = done_transfer || ( blitq->aborting && !(status & VIA_DMA_CSR_DE));
cur = blitq->cur;
if (done_transfer) {
blitq->blits[cur]->aborted = blitq->aborting;
blitq->done_blit_handle++;
- DRM_WAKEUP(blitq->blit_queue + cur);
+ DRM_WAKEUP(blitq->blit_queue + cur);
cur++;
- if (cur >= VIA_NUM_BLIT_SLOTS)
+ if (cur >= VIA_NUM_BLIT_SLOTS)
cur = 0;
blitq->cur = cur;
blitq->is_active = 0;
blitq->aborting = 0;
- schedule_work(&blitq->wq);
+ schedule_work(&blitq->wq);
} else if (blitq->is_active && time_after_eq(jiffies, blitq->end)) {
blitq->aborting = 1;
blitq->end = jiffies + DRM_HZ;
}
-
+
if (!blitq->is_active) {
if (blitq->num_outstanding) {
via_fire_dmablit(dev, blitq->blits[cur], engine);
blitq->cur = cur;
blitq->num_outstanding--;
blitq->end = jiffies + DRM_HZ;
- if (!timer_pending(&blitq->poll_timer)) {
- blitq->poll_timer.expires = jiffies+1;
- add_timer(&blitq->poll_timer);
- }
+ if (!timer_pending(&blitq->poll_timer))
+ mod_timer(&blitq->poll_timer, jiffies + 1);
} else {
if (timer_pending(&blitq->poll_timer)) {
del_timer(&blitq->poll_timer);
}
via_dmablit_engine_off(dev, engine);
}
- }
+ }
if (from_irq) {
spin_unlock(&blitq->blit_lock);
} else {
spin_unlock_irqrestore(&blitq->blit_lock, irqsave);
}
-}
+}
return active;
}
-
+
/*
* Sync. Wait for at least three seconds for the blit to be performed.
*/
static int
-via_dmablit_sync(drm_device_t *dev, uint32_t handle, int engine)
+via_dmablit_sync(struct drm_device *dev, uint32_t handle, int engine)
{
drm_via_private_t *dev_priv = (drm_via_private_t *)dev->dev_private;
int ret = 0;
if (via_dmablit_active(blitq, engine, handle, &queue)) {
- DRM_WAIT_ON(ret, *queue, 3 * DRM_HZ,
+ DRM_WAIT_ON(ret, *queue, 3 * DRM_HZ,
!via_dmablit_active(blitq, engine, handle, NULL));
}
DRM_DEBUG("DMA blit sync handle 0x%x engine %d returned %d\n",
handle, engine, ret);
-
+
return ret;
}
via_dmablit_timer(unsigned long data)
{
drm_via_blitq_t *blitq = (drm_via_blitq_t *) data;
- drm_device_t *dev = blitq->dev;
+ struct drm_device *dev = blitq->dev;
int engine = (int)
(blitq - ((drm_via_private_t *)dev->dev_private)->blit_queues);
-
- DRM_DEBUG("Polling timer called for engine %d, jiffies %lu\n", engine,
+
+ DRM_DEBUG("Polling timer called for engine %d, jiffies %lu\n", engine,
(unsigned long) jiffies);
via_dmablit_handler(dev, engine, 0);
-
+
if (!timer_pending(&blitq->poll_timer)) {
- blitq->poll_timer.expires = jiffies+1;
- add_timer(&blitq->poll_timer);
+ mod_timer(&blitq->poll_timer, jiffies + 1);
/*
* Rerun handler to delete timer if engines are off, and
*/
-static void
+static void
via_dmablit_workqueue(struct work_struct *work)
{
drm_via_blitq_t *blitq = container_of(work, drm_via_blitq_t, wq);
- drm_device_t *dev = blitq->dev;
+ struct drm_device *dev = blitq->dev;
unsigned long irqsave;
drm_via_sg_info_t *cur_sg;
int cur_released;
-
-
- DRM_DEBUG("Workqueue task called for blit engine %ld\n",(unsigned long)
+
+
+ DRM_DEBUG("Workqueue task called for blit engine %ld\n",(unsigned long)
(blitq - ((drm_via_private_t *)dev->dev_private)->blit_queues));
spin_lock_irqsave(&blitq->blit_lock, irqsave);
-
+
while(blitq->serviced != blitq->cur) {
cur_released = blitq->serviced++;
DRM_DEBUG("Releasing blit slot %d\n", cur_released);
- if (blitq->serviced >= VIA_NUM_BLIT_SLOTS)
+ if (blitq->serviced >= VIA_NUM_BLIT_SLOTS)
blitq->serviced = 0;
-
+
cur_sg = blitq->blits[cur_released];
blitq->num_free++;
-
+
spin_unlock_irqrestore(&blitq->blit_lock, irqsave);
-
+
DRM_WAKEUP(&blitq->busy_queue);
-
+
via_free_sg_info(dev->pdev, cur_sg);
kfree(cur_sg);
-
+
spin_lock_irqsave(&blitq->blit_lock, irqsave);
}
spin_unlock_irqrestore(&blitq->blit_lock, irqsave);
}
-
+
/*
* Init all blit engines. Currently we use two, but some hardware have 4.
void
-via_init_dmablit(drm_device_t *dev)
+via_init_dmablit(struct drm_device *dev)
{
int i,j;
drm_via_private_t *dev_priv = (drm_via_private_t *)dev->dev_private;
drm_via_blitq_t *blitq;
- pci_set_master(dev->pdev);
-
+ pci_set_master(dev->pdev);
+
for (i=0; i< VIA_NUM_BLIT_ENGINES; ++i) {
blitq = dev_priv->blit_queues + i;
blitq->dev = dev;
blitq->head = 0;
blitq->cur = 0;
blitq->serviced = 0;
- blitq->num_free = VIA_NUM_BLIT_SLOTS;
+ blitq->num_free = VIA_NUM_BLIT_SLOTS - 1;
blitq->num_outstanding = 0;
blitq->is_active = 0;
blitq->aborting = 0;
}
DRM_INIT_WAITQUEUE(&blitq->busy_queue);
INIT_WORK(&blitq->wq, via_dmablit_workqueue);
- init_timer(&blitq->poll_timer);
- blitq->poll_timer.function = &via_dmablit_timer;
- blitq->poll_timer.data = (unsigned long) blitq;
- }
+ setup_timer(&blitq->poll_timer, via_dmablit_timer,
+ (unsigned long)blitq);
+ }
}
/*
* Build all info and do all mappings required for a blit.
*/
-
+
static int
-via_build_sg_info(drm_device_t *dev, drm_via_sg_info_t *vsg, drm_via_dmablit_t *xfer)
+via_build_sg_info(struct drm_device *dev, drm_via_sg_info_t *vsg, drm_via_dmablit_t *xfer)
{
int draw = xfer->to_fb;
int ret = 0;
-
+
vsg->direction = (draw) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
vsg->bounce_buffer = NULL;
if (xfer->num_lines <= 0 || xfer->line_length <= 0) {
DRM_ERROR("Zero size bitblt.\n");
- return DRM_ERR(EINVAL);
+ return -EINVAL;
}
/*
* Below check is a driver limitation, not a hardware one. We
* don't want to lock unused pages, and don't want to incoporate the
- * extra logic of avoiding them. Make sure there are no.
+ * extra logic of avoiding them. Make sure there are no.
* (Not a big limitation anyway.)
*/
if ((xfer->mem_stride - xfer->line_length) >= PAGE_SIZE) {
DRM_ERROR("Too large system memory stride. Stride: %d, "
"Length: %d\n", xfer->mem_stride, xfer->line_length);
- return DRM_ERR(EINVAL);
+ return -EINVAL;
}
if ((xfer->mem_stride == xfer->line_length) &&
if (xfer->num_lines > 2048 || (xfer->num_lines*xfer->mem_stride > (2048*2048*4))) {
DRM_ERROR("Too large PCI DMA bitblt.\n");
- return DRM_ERR(EINVAL);
- }
+ return -EINVAL;
+ }
- /*
+ /*
* we allow a negative fb stride to allow flipping of images in
- * transfer.
+ * transfer.
*/
if (xfer->mem_stride < xfer->line_length ||
abs(xfer->fb_stride) < xfer->line_length) {
DRM_ERROR("Invalid frame-buffer / memory stride.\n");
- return DRM_ERR(EINVAL);
+ return -EINVAL;
}
/*
if ((((unsigned long)xfer->mem_addr & 3) != ((unsigned long)xfer->fb_addr & 3)) ||
((xfer->num_lines > 1) && ((xfer->mem_stride & 3) != (xfer->fb_stride & 3)))) {
DRM_ERROR("Invalid DRM bitblt alignment.\n");
- return DRM_ERR(EINVAL);
+ return -EINVAL;
}
#else
if ((((unsigned long)xfer->mem_addr & 15) ||
((unsigned long)xfer->fb_addr & 3)) ||
- ((xfer->num_lines > 1) &&
+ ((xfer->num_lines > 1) &&
((xfer->mem_stride & 15) || (xfer->fb_stride & 3)))) {
DRM_ERROR("Invalid DRM bitblt alignment.\n");
- return DRM_ERR(EINVAL);
- }
+ return -EINVAL;
+ }
#endif
if (0 != (ret = via_lock_all_dma_pages(vsg, xfer))) {
return ret;
}
via_map_blit_for_device(dev->pdev, xfer, vsg, 1);
-
+
return 0;
}
-
+
/*
* Reserve one free slot in the blit queue. Will wait for one second for one
* to become available. Otherwise -EBUSY is returned.
*/
-static int
+static int
via_dmablit_grab_slot(drm_via_blitq_t *blitq, int engine)
{
int ret=0;
DRM_WAIT_ON(ret, blitq->busy_queue, DRM_HZ, blitq->num_free > 0);
if (ret) {
- return (DRM_ERR(EINTR) == ret) ? DRM_ERR(EAGAIN) : ret;
+ return (-EINTR == ret) ? -EAGAIN : ret;
}
-
+
spin_lock_irqsave(&blitq->blit_lock, irqsave);
}
-
+
blitq->num_free--;
spin_unlock_irqrestore(&blitq->blit_lock, irqsave);
* Hand back a free slot if we changed our mind.
*/
-static void
+static void
via_dmablit_release_slot(drm_via_blitq_t *blitq)
{
unsigned long irqsave;
*/
-static int
-via_dmablit(drm_device_t *dev, drm_via_dmablit_t *xfer)
+static int
+via_dmablit(struct drm_device *dev, drm_via_dmablit_t *xfer)
{
drm_via_private_t *dev_priv = (drm_via_private_t *)dev->dev_private;
drm_via_sg_info_t *vsg;
if (dev_priv == NULL) {
DRM_ERROR("Called without initialization.\n");
- return DRM_ERR(EINVAL);
+ return -EINVAL;
}
engine = (xfer->to_fb) ? 0 : 1;
}
if (NULL == (vsg = kmalloc(sizeof(*vsg), GFP_KERNEL))) {
via_dmablit_release_slot(blitq);
- return DRM_ERR(ENOMEM);
+ return -ENOMEM;
}
if (0 != (ret = via_build_sg_info(dev, vsg, xfer))) {
via_dmablit_release_slot(blitq);
spin_lock_irqsave(&blitq->blit_lock, irqsave);
blitq->blits[blitq->head++] = vsg;
- if (blitq->head >= VIA_NUM_BLIT_SLOTS)
+ if (blitq->head >= VIA_NUM_BLIT_SLOTS)
blitq->head = 0;
blitq->num_outstanding++;
- xfer->sync.sync_handle = ++blitq->cur_blit_handle;
+ xfer->sync.sync_handle = ++blitq->cur_blit_handle;
spin_unlock_irqrestore(&blitq->blit_lock, irqsave);
xfer->sync.engine = engine;
- via_dmablit_handler(dev, engine, 0);
+ via_dmablit_handler(dev, engine, 0);
return 0;
}
/*
* Sync on a previously submitted blit. Note that the X server use signals extensively, and
* that there is a very big probability that this IOCTL will be interrupted by a signal. In that
- * case it returns with -EAGAIN for the signal to be delivered.
+ * case it returns with -EAGAIN for the signal to be delivered.
* The caller should then reissue the IOCTL. This is similar to what is being done for drmGetLock().
*/
int
-via_dma_blit_sync( DRM_IOCTL_ARGS )
+via_dma_blit_sync( struct drm_device *dev, void *data, struct drm_file *file_priv )
{
- drm_via_blitsync_t sync;
+ drm_via_blitsync_t *sync = data;
int err;
- DRM_DEVICE;
- DRM_COPY_FROM_USER_IOCTL(sync, (drm_via_blitsync_t *)data, sizeof(sync));
-
- if (sync.engine >= VIA_NUM_BLIT_ENGINES)
- return DRM_ERR(EINVAL);
+ if (sync->engine >= VIA_NUM_BLIT_ENGINES)
+ return -EINVAL;
- err = via_dmablit_sync(dev, sync.sync_handle, sync.engine);
+ err = via_dmablit_sync(dev, sync->sync_handle, sync->engine);
- if (DRM_ERR(EINTR) == err)
- err = DRM_ERR(EAGAIN);
+ if (-EINTR == err)
+ err = -EAGAIN;
return err;
}
-
+
/*
* Queue a blit and hand back a handle to be used for sync. This IOCTL may be interrupted by a signal
- * while waiting for a free slot in the blit queue. In that case it returns with -EAGAIN and should
+ * while waiting for a free slot in the blit queue. In that case it returns with -EAGAIN and should
* be reissued. See the above IOCTL code.
*/
-int
-via_dma_blit( DRM_IOCTL_ARGS )
+int
+via_dma_blit( struct drm_device *dev, void *data, struct drm_file *file_priv )
{
- drm_via_dmablit_t xfer;
+ drm_via_dmablit_t *xfer = data;
int err;
- DRM_DEVICE;
-
- DRM_COPY_FROM_USER_IOCTL(xfer, (drm_via_dmablit_t __user *)data, sizeof(xfer));
-
- err = via_dmablit(dev, &xfer);
- DRM_COPY_TO_USER_IOCTL((void __user *)data, xfer, sizeof(xfer));
+ err = via_dmablit(dev, xfer);
return err;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff