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path: root/drivers/gpu/drm/via/via_dmablit.c
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Diffstat (limited to 'drivers/gpu/drm/via/via_dmablit.c')
-rw-r--r--drivers/gpu/drm/via/via_dmablit.c71
1 files changed, 32 insertions, 39 deletions
diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_dmablit.c
index 4c54f043068..9b5b4d9dd62 100644
--- a/drivers/gpu/drm/via/via_dmablit.c
+++ b/drivers/gpu/drm/via/via_dmablit.c
@@ -70,7 +70,7 @@ via_unmap_blit_from_device(struct pci_dev *pdev, drm_via_sg_info_t *vsg)
descriptor_this_page;
dma_addr_t next = vsg->chain_start;
- while(num_desc--) {
+ while (num_desc--) {
if (descriptor_this_page-- == 0) {
cur_descriptor_page--;
descriptor_this_page = vsg->descriptors_per_page - 1;
@@ -174,19 +174,19 @@ via_free_sg_info(struct pci_dev *pdev, drm_via_sg_info_t *vsg)
struct page *page;
int i;
- switch(vsg->state) {
+ switch (vsg->state) {
case dr_via_device_mapped:
via_unmap_blit_from_device(pdev, vsg);
case dr_via_desc_pages_alloc:
- for (i=0; i<vsg->num_desc_pages; ++i) {
+ for (i = 0; i < vsg->num_desc_pages; ++i) {
if (vsg->desc_pages[i] != NULL)
- free_page((unsigned long)vsg->desc_pages[i]);
+ free_page((unsigned long)vsg->desc_pages[i]);
}
kfree(vsg->desc_pages);
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))
+ for (i = 0; i < vsg->num_pages; ++i) {
+ if (NULL != (page = vsg->pages[i])) {
+ if (!PageReserved(page) && (DMA_FROM_DEVICE == vsg->direction))
SetPageDirty(page);
page_cache_release(page);
}
@@ -232,7 +232,7 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_via_dmablit_t *xfer)
{
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)))
@@ -268,7 +268,7 @@ via_alloc_desc_pages(drm_via_sg_info_t *vsg)
{
int i;
- vsg->descriptors_per_page = PAGE_SIZE / sizeof( drm_via_descriptor_t);
+ vsg->descriptors_per_page = PAGE_SIZE / sizeof(drm_via_descriptor_t);
vsg->num_desc_pages = (vsg->num_desc + vsg->descriptors_per_page - 1) /
vsg->descriptors_per_page;
@@ -276,7 +276,7 @@ via_alloc_desc_pages(drm_via_sg_info_t *vsg)
return -ENOMEM;
vsg->state = dr_via_desc_pages_alloc;
- for (i=0; i<vsg->num_desc_pages; ++i) {
+ for (i = 0; i < vsg->num_desc_pages; ++i) {
if (NULL == (vsg->desc_pages[i] =
(drm_via_descriptor_t *) __get_free_page(GFP_KERNEL)))
return -ENOMEM;
@@ -318,21 +318,20 @@ via_dmablit_handler(struct drm_device *dev, int engine, int from_irq)
drm_via_blitq_t *blitq = dev_priv->blit_queues + engine;
int cur;
int done_transfer;
- unsigned long irqsave=0;
+ unsigned long irqsave = 0;
uint32_t status = 0;
DRM_DEBUG("DMA blit handler called. engine = %d, from_irq = %d, blitq = 0x%lx\n",
engine, from_irq, (unsigned long) blitq);
- if (from_irq) {
+ if (from_irq)
spin_lock(&blitq->blit_lock);
- } else {
+ else
spin_lock_irqsave(&blitq->blit_lock, irqsave);
- }
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));
+ ((status = VIA_READ(VIA_PCI_DMA_CSR0 + engine*0x04)) & VIA_DMA_CSR_TD);
+ done_transfer = done_transfer || (blitq->aborting && !(status & VIA_DMA_CSR_DE));
cur = blitq->cur;
if (done_transfer) {
@@ -377,18 +376,16 @@ via_dmablit_handler(struct drm_device *dev, int engine, int from_irq)
if (!timer_pending(&blitq->poll_timer))
mod_timer(&blitq->poll_timer, jiffies + 1);
} else {
- if (timer_pending(&blitq->poll_timer)) {
+ if (timer_pending(&blitq->poll_timer))
del_timer(&blitq->poll_timer);
- }
via_dmablit_engine_off(dev, engine);
}
}
- if (from_irq) {
+ if (from_irq)
spin_unlock(&blitq->blit_lock);
- } else {
+ else
spin_unlock_irqrestore(&blitq->blit_lock, irqsave);
- }
}
@@ -414,10 +411,9 @@ via_dmablit_active(drm_via_blitq_t *blitq, int engine, uint32_t handle, wait_que
((blitq->cur_blit_handle - handle) <= (1 << 23));
if (queue && active) {
- slot = handle - blitq->done_blit_handle + blitq->cur -1;
- if (slot >= VIA_NUM_BLIT_SLOTS) {
+ slot = handle - blitq->done_blit_handle + blitq->cur - 1;
+ if (slot >= VIA_NUM_BLIT_SLOTS)
slot -= VIA_NUM_BLIT_SLOTS;
- }
*queue = blitq->blit_queue + slot;
}
@@ -506,12 +502,12 @@ via_dmablit_workqueue(struct work_struct *work)
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) {
+ while (blitq->serviced != blitq->cur) {
cur_released = blitq->serviced++;
@@ -545,13 +541,13 @@ via_dmablit_workqueue(struct work_struct *work)
void
via_init_dmablit(struct drm_device *dev)
{
- int i,j;
+ 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);
- for (i=0; i< VIA_NUM_BLIT_ENGINES; ++i) {
+ for (i = 0; i < VIA_NUM_BLIT_ENGINES; ++i) {
blitq = dev_priv->blit_queues + i;
blitq->dev = dev;
blitq->cur_blit_handle = 0;
@@ -564,9 +560,8 @@ via_init_dmablit(struct drm_device *dev)
blitq->is_active = 0;
blitq->aborting = 0;
spin_lock_init(&blitq->blit_lock);
- for (j=0; j<VIA_NUM_BLIT_SLOTS; ++j) {
+ for (j = 0; j < VIA_NUM_BLIT_SLOTS; ++j)
DRM_INIT_WAITQUEUE(blitq->blit_queue + j);
- }
DRM_INIT_WAITQUEUE(&blitq->busy_queue);
INIT_WORK(&blitq->wq, via_dmablit_workqueue);
setup_timer(&blitq->poll_timer, via_dmablit_timer,
@@ -685,18 +680,17 @@ via_build_sg_info(struct drm_device *dev, drm_via_sg_info_t *vsg, drm_via_dmabli
static int
via_dmablit_grab_slot(drm_via_blitq_t *blitq, int engine)
{
- int ret=0;
+ int ret = 0;
unsigned long irqsave;
DRM_DEBUG("Num free is %d\n", blitq->num_free);
spin_lock_irqsave(&blitq->blit_lock, irqsave);
- while(blitq->num_free == 0) {
+ while (blitq->num_free == 0) {
spin_unlock_irqrestore(&blitq->blit_lock, irqsave);
DRM_WAIT_ON(ret, blitq->busy_queue, DRM_HZ, blitq->num_free > 0);
- if (ret) {
+ if (ret)
return (-EINTR == ret) ? -EAGAIN : ret;
- }
spin_lock_irqsave(&blitq->blit_lock, irqsave);
}
@@ -719,7 +713,7 @@ via_dmablit_release_slot(drm_via_blitq_t *blitq)
spin_lock_irqsave(&blitq->blit_lock, irqsave);
blitq->num_free++;
spin_unlock_irqrestore(&blitq->blit_lock, irqsave);
- DRM_WAKEUP( &blitq->busy_queue );
+ DRM_WAKEUP(&blitq->busy_queue);
}
/*
@@ -744,9 +738,8 @@ via_dmablit(struct drm_device *dev, drm_via_dmablit_t *xfer)
engine = (xfer->to_fb) ? 0 : 1;
blitq = dev_priv->blit_queues + engine;
- if (0 != (ret = via_dmablit_grab_slot(blitq, engine))) {
+ if (0 != (ret = via_dmablit_grab_slot(blitq, engine)))
return ret;
- }
if (NULL == (vsg = kmalloc(sizeof(*vsg), GFP_KERNEL))) {
via_dmablit_release_slot(blitq);
return -ENOMEM;
@@ -780,7 +773,7 @@ via_dmablit(struct drm_device *dev, drm_via_dmablit_t *xfer)
*/
int
-via_dma_blit_sync( struct drm_device *dev, void *data, struct drm_file *file_priv )
+via_dma_blit_sync(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_via_blitsync_t *sync = data;
int err;
@@ -804,7 +797,7 @@ via_dma_blit_sync( struct drm_device *dev, void *data, struct drm_file *file_pri
*/
int
-via_dma_blit( struct drm_device *dev, void *data, struct drm_file *file_priv )
+via_dma_blit(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
drm_via_dmablit_t *xfer = data;
int err;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 06:43:34 +0000