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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-05 16:02:01 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-05 16:02:01 -0700 |
commit | fc1caf6eafb30ea185720e29f7f5eccca61ecd60 (patch) | |
tree | 666dabc25a9b02e5c05f9eba32fa6b0d8027341a /drivers/gpu/drm/via/via_dmablit.c | |
parent | 9779714c8af09d57527f18d9aa2207dcc27a8687 (diff) | |
parent | 96576a9e1a0cdb8a43d3af5846be0948f52b4460 (diff) | |
download | blackbird-op-linux-fc1caf6eafb30ea185720e29f7f5eccca61ecd60.tar.gz blackbird-op-linux-fc1caf6eafb30ea185720e29f7f5eccca61ecd60.zip |
Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (204 commits)
agp: intel-agp: do not use PCI resources before pci_enable_device()
agp: efficeon-agp: do not use PCI resources before pci_enable_device()
drm: kill BKL from common code
drm/kms: Simplify setup of the initial I2C encoder config.
drm,io-mapping: Specify slot to use for atomic mappings
drm/radeon/kms: only expose underscan on avivo chips
drm/radeon: add new pci ids
drm: Cleanup after failing to create master->unique and dev->name
drm/radeon: tone down overchatty acpi debug messages.
drm/radeon/kms: enable underscan option for digital connectors
drm/radeon/kms: fix calculation of h/v scaling factors
drm/radeon/kms/igp: sideport is AMD only
drm/radeon/kms: handle the case of no active displays properly in the bandwidth code
drm: move ttm global code to core drm
drm/i915: Clear the Ironlake dithering flags when the pipe doesn't want it.
drm/radeon/kms: make sure HPD is set to NONE on analog-only connectors
drm/radeon/kms: make sure rio_mem is valid before unmapping it
drm/agp/i915: trim stolen space to 32M
drm/i915: Unset cursor if out-of-bounds upon mode change (v4)
drm/i915: Unreference object not handle on creation
...
Diffstat (limited to 'drivers/gpu/drm/via/via_dmablit.c')
-rw-r--r-- | drivers/gpu/drm/via/via_dmablit.c | 71 |
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 4c54f043068e..9b5b4d9dd62c 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; |