ssb, b43, b43legacy, b44: Rewrite SSB DMA API
This is a rewrite of the DMA API for SSB devices.
This is needed, because the old (non-existing) "API" made too many bad
assumptions on the API of the host-bus (PCI).
This introduces an almost complete SSB-DMA-API that maps to the lowlevel
bus-API based on the bustype.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43legacy/dma.c b/drivers/net/wireless/b43legacy/dma.c
index 33cc256..9736b2f 100644
--- a/drivers/net/wireless/b43legacy/dma.c
+++ b/drivers/net/wireless/b43legacy/dma.c
@@ -393,13 +393,13 @@
dma_addr_t dmaaddr;
if (tx)
- dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
- buf, len,
- DMA_TO_DEVICE);
+ dmaaddr = ssb_dma_map_single(ring->dev->dev,
+ buf, len,
+ DMA_TO_DEVICE);
else
- dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
- buf, len,
- DMA_FROM_DEVICE);
+ dmaaddr = ssb_dma_map_single(ring->dev->dev,
+ buf, len,
+ DMA_FROM_DEVICE);
return dmaaddr;
}
@@ -411,13 +411,13 @@
int tx)
{
if (tx)
- dma_unmap_single(ring->dev->dev->dma_dev,
- addr, len,
- DMA_TO_DEVICE);
+ ssb_dma_unmap_single(ring->dev->dev,
+ addr, len,
+ DMA_TO_DEVICE);
else
- dma_unmap_single(ring->dev->dev->dma_dev,
- addr, len,
- DMA_FROM_DEVICE);
+ ssb_dma_unmap_single(ring->dev->dev,
+ addr, len,
+ DMA_FROM_DEVICE);
}
static inline
@@ -427,8 +427,8 @@
{
B43legacy_WARN_ON(ring->tx);
- dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
- addr, len, DMA_FROM_DEVICE);
+ ssb_dma_sync_single_for_cpu(ring->dev->dev,
+ addr, len, DMA_FROM_DEVICE);
}
static inline
@@ -438,8 +438,8 @@
{
B43legacy_WARN_ON(ring->tx);
- dma_sync_single_for_device(ring->dev->dev->dma_dev,
- addr, len, DMA_FROM_DEVICE);
+ ssb_dma_sync_single_for_device(ring->dev->dev,
+ addr, len, DMA_FROM_DEVICE);
}
static inline
@@ -458,10 +458,11 @@
static int alloc_ringmemory(struct b43legacy_dmaring *ring)
{
- struct device *dma_dev = ring->dev->dev->dma_dev;
-
- ring->descbase = dma_alloc_coherent(dma_dev, B43legacy_DMA_RINGMEMSIZE,
- &(ring->dmabase), GFP_KERNEL);
+ /* GFP flags must match the flags in free_ringmemory()! */
+ ring->descbase = ssb_dma_alloc_consistent(ring->dev->dev,
+ B43legacy_DMA_RINGMEMSIZE,
+ &(ring->dmabase),
+ GFP_KERNEL);
if (!ring->descbase) {
b43legacyerr(ring->dev->wl, "DMA ringmemory allocation"
" failed\n");
@@ -474,10 +475,8 @@
static void free_ringmemory(struct b43legacy_dmaring *ring)
{
- struct device *dma_dev = ring->dev->dev->dma_dev;
-
- dma_free_coherent(dma_dev, B43legacy_DMA_RINGMEMSIZE,
- ring->descbase, ring->dmabase);
+ ssb_dma_free_consistent(ring->dev->dev, B43legacy_DMA_RINGMEMSIZE,
+ ring->descbase, ring->dmabase, GFP_KERNEL);
}
/* Reset the RX DMA channel */
@@ -589,7 +588,7 @@
size_t buffersize,
bool dma_to_device)
{
- if (unlikely(dma_mapping_error(addr)))
+ if (unlikely(ssb_dma_mapping_error(ring->dev->dev, addr)))
return 1;
switch (ring->type) {
@@ -893,9 +892,9 @@
goto err_kfree_meta;
/* test for ability to dma to txhdr_cache */
- dma_test = dma_map_single(dev->dev->dma_dev, ring->txhdr_cache,
- sizeof(struct b43legacy_txhdr_fw3),
- DMA_TO_DEVICE);
+ dma_test = ssb_dma_map_single(dev->dev, ring->txhdr_cache,
+ sizeof(struct b43legacy_txhdr_fw3),
+ DMA_TO_DEVICE);
if (b43legacy_dma_mapping_error(ring, dma_test,
sizeof(struct b43legacy_txhdr_fw3), 1)) {
@@ -907,7 +906,7 @@
if (!ring->txhdr_cache)
goto err_kfree_meta;
- dma_test = dma_map_single(dev->dev->dma_dev,
+ dma_test = ssb_dma_map_single(dev->dev,
ring->txhdr_cache,
sizeof(struct b43legacy_txhdr_fw3),
DMA_TO_DEVICE);
@@ -917,9 +916,9 @@
goto err_kfree_txhdr_cache;
}
- dma_unmap_single(dev->dev->dma_dev,
- dma_test, sizeof(struct b43legacy_txhdr_fw3),
- DMA_TO_DEVICE);
+ ssb_dma_unmap_single(dev->dev, dma_test,
+ sizeof(struct b43legacy_txhdr_fw3),
+ DMA_TO_DEVICE);
}
ring->dev = dev;