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authorMichael Buesch <mb@bu3sch.de>2008-06-20 11:50:29 +0200
committerJohn W. Linville <linville@tuxdriver.com>2008-06-27 09:09:15 -0400
commitf225763a7d6c92c4932dbd528437997078496fcc (patch)
tree5d787c7c0bdabcf72e98603a85672ebe95a3682e /drivers/net/wireless/b43legacy
parent316af76f3475bb73dbb11f1c6d549ae589efb3d0 (diff)
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>
Diffstat (limited to 'drivers/net/wireless/b43legacy')
-rw-r--r--drivers/net/wireless/b43legacy/dma.c63
1 files changed, 31 insertions, 32 deletions
diff --git a/drivers/net/wireless/b43legacy/dma.c b/drivers/net/wireless/b43legacy/dma.c
index 33cc256c5baf..9736b2f56a75 100644
--- a/drivers/net/wireless/b43legacy/dma.c
+++ b/drivers/net/wireless/b43legacy/dma.c
@@ -393,13 +393,13 @@ dma_addr_t map_descbuffer(struct b43legacy_dmaring *ring,
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 @@ void unmap_descbuffer(struct b43legacy_dmaring *ring,
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 @@ void sync_descbuffer_for_cpu(struct b43legacy_dmaring *ring,
{
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 @@ void sync_descbuffer_for_device(struct b43legacy_dmaring *ring,
{
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 @@ void free_descriptor_buffer(struct b43legacy_dmaring *ring,
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 int alloc_ringmemory(struct b43legacy_dmaring *ring)
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 @@ static bool b43legacy_dma_mapping_error(struct b43legacy_dmaring *ring,
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 @@ struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev,
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 @@ struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev,
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 @@ struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev,
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;