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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-07 20:39:25 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-07 20:39:25 -0400
commitd0cd84817c745655428dbfdb1e3f754230b46bef (patch)
treea7b6f422f6ac50f506ffa7a66f8e83387f90f212 /drivers/dma/dmaengine.c
parentbdf428feb225229b1d4715b45bbdad4a934cd89c (diff)
parent3f334078567245429540e6461c81c749fce87f70 (diff)
downloadlinux-d0cd84817c745655428dbfdb1e3f754230b46bef.tar.bz2
Merge tag 'dmaengine-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine
Pull dmaengine updates from Dan Williams: "Even though this has fixes marked for -stable, given the size and the needed conflict resolutions this is 3.18-rc1/merge-window material. These patches have been languishing in my tree for a long while. The fact that I do not have the time to do proper/prompt maintenance of this tree is a primary factor in the decision to step down as dmaengine maintainer. That and the fact that the bulk of drivers/dma/ activity is going through Vinod these days. The net_dma removal has not been in -next. It has developed simple conflicts against mainline and net-next (for-3.18). Continuing thanks to Vinod for staying on top of drivers/dma/. Summary: 1/ Step down as dmaengine maintainer see commit 08223d80df38 "dmaengine maintainer update" 2/ Removal of net_dma, as it has been marked 'broken' since 3.13 (commit 77873803363c "net_dma: mark broken"), without reports of performance regression. 3/ Miscellaneous fixes" * tag 'dmaengine-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine: net: make tcp_cleanup_rbuf private net_dma: revert 'copied_early' net_dma: simple removal dmaengine maintainer update dmatest: prevent memory leakage on error path in thread ioat: Use time_before_jiffies() dmaengine: fix xor sources continuation dma: mv_xor: Rename __mv_xor_slot_cleanup() to mv_xor_slot_cleanup() dma: mv_xor: Remove all callers of mv_xor_slot_cleanup() dma: mv_xor: Remove unneeded mv_xor_clean_completed_slots() call ioat: Use pci_enable_msix_exact() instead of pci_enable_msix() drivers: dma: Include appropriate header file in dca.c drivers: dma: Mark functions as static in dma_v3.c dma: mv_xor: Add DMA API error checks ioat/dca: Use dev_is_pci() to check whether it is pci device
Diffstat (limited to 'drivers/dma/dmaengine.c')
-rw-r--r--drivers/dma/dmaengine.c104
1 files changed, 0 insertions, 104 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index d5d30ed863ce..24bfaf0b92ba 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -1081,110 +1081,6 @@ dmaengine_get_unmap_data(struct device *dev, int nr, gfp_t flags)
}
EXPORT_SYMBOL(dmaengine_get_unmap_data);
-/**
- * dma_async_memcpy_pg_to_pg - offloaded copy from page to page
- * @chan: DMA channel to offload copy to
- * @dest_pg: destination page
- * @dest_off: offset in page to copy to
- * @src_pg: source page
- * @src_off: offset in page to copy from
- * @len: length
- *
- * Both @dest_page/@dest_off and @src_page/@src_off must be mappable to a bus
- * address according to the DMA mapping API rules for streaming mappings.
- * Both @dest_page/@dest_off and @src_page/@src_off must stay memory resident
- * (kernel memory or locked user space pages).
- */
-dma_cookie_t
-dma_async_memcpy_pg_to_pg(struct dma_chan *chan, struct page *dest_pg,
- unsigned int dest_off, struct page *src_pg, unsigned int src_off,
- size_t len)
-{
- struct dma_device *dev = chan->device;
- struct dma_async_tx_descriptor *tx;
- struct dmaengine_unmap_data *unmap;
- dma_cookie_t cookie;
- unsigned long flags;
-
- unmap = dmaengine_get_unmap_data(dev->dev, 2, GFP_NOWAIT);
- if (!unmap)
- return -ENOMEM;
-
- unmap->to_cnt = 1;
- unmap->from_cnt = 1;
- unmap->addr[0] = dma_map_page(dev->dev, src_pg, src_off, len,
- DMA_TO_DEVICE);
- unmap->addr[1] = dma_map_page(dev->dev, dest_pg, dest_off, len,
- DMA_FROM_DEVICE);
- unmap->len = len;
- flags = DMA_CTRL_ACK;
- tx = dev->device_prep_dma_memcpy(chan, unmap->addr[1], unmap->addr[0],
- len, flags);
-
- if (!tx) {
- dmaengine_unmap_put(unmap);
- return -ENOMEM;
- }
-
- dma_set_unmap(tx, unmap);
- cookie = tx->tx_submit(tx);
- dmaengine_unmap_put(unmap);
-
- preempt_disable();
- __this_cpu_add(chan->local->bytes_transferred, len);
- __this_cpu_inc(chan->local->memcpy_count);
- preempt_enable();
-
- return cookie;
-}
-EXPORT_SYMBOL(dma_async_memcpy_pg_to_pg);
-
-/**
- * dma_async_memcpy_buf_to_buf - offloaded copy between virtual addresses
- * @chan: DMA channel to offload copy to
- * @dest: destination address (virtual)
- * @src: source address (virtual)
- * @len: length
- *
- * Both @dest and @src must be mappable to a bus address according to the
- * DMA mapping API rules for streaming mappings.
- * Both @dest and @src must stay memory resident (kernel memory or locked
- * user space pages).
- */
-dma_cookie_t
-dma_async_memcpy_buf_to_buf(struct dma_chan *chan, void *dest,
- void *src, size_t len)
-{
- return dma_async_memcpy_pg_to_pg(chan, virt_to_page(dest),
- (unsigned long) dest & ~PAGE_MASK,
- virt_to_page(src),
- (unsigned long) src & ~PAGE_MASK, len);
-}
-EXPORT_SYMBOL(dma_async_memcpy_buf_to_buf);
-
-/**
- * dma_async_memcpy_buf_to_pg - offloaded copy from address to page
- * @chan: DMA channel to offload copy to
- * @page: destination page
- * @offset: offset in page to copy to
- * @kdata: source address (virtual)
- * @len: length
- *
- * Both @page/@offset and @kdata must be mappable to a bus address according
- * to the DMA mapping API rules for streaming mappings.
- * Both @page/@offset and @kdata must stay memory resident (kernel memory or
- * locked user space pages)
- */
-dma_cookie_t
-dma_async_memcpy_buf_to_pg(struct dma_chan *chan, struct page *page,
- unsigned int offset, void *kdata, size_t len)
-{
- return dma_async_memcpy_pg_to_pg(chan, page, offset,
- virt_to_page(kdata),
- (unsigned long) kdata & ~PAGE_MASK, len);
-}
-EXPORT_SYMBOL(dma_async_memcpy_buf_to_pg);
-
void dma_async_tx_descriptor_init(struct dma_async_tx_descriptor *tx,
struct dma_chan *chan)
{