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authorMichael Buesch <mb@bu3sch.de>2008-04-11 11:59:00 +0200
committerJohn W. Linville <linville@tuxdriver.com>2008-04-15 15:04:35 -0400
commit4ac58469f13028e1eb97f8bc7b0fca5072591d8d (patch)
treec955e1b753e1f86c570d2d6f5f6095d1182d5c35 /drivers/net/wireless/b43/dma.c
parent2d4543fdb487b1301ae48703dea3e66ead2d3c75 (diff)
ssb: Fix usage of struct device used for DMAing
This fixes DMA on architectures where DMA is nontrivial, like PPC64. We must use the host-device's (PCI) struct device for any DMA operation instead of the SSB device. For this we add a new struct device pointer to the SSB device structure that will always point to the right device for DMAing. Without this patch b43 and b44 drivers won't work on complex-DMA architectures, that for example need dev->archdata for DMA operations. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/b43/dma.c')
-rw-r--r--drivers/net/wireless/b43/dma.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 948eb1fe916..48e912487b1 100644
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -373,10 +373,10 @@ static inline
dma_addr_t dmaaddr;
if (tx) {
- dmaaddr = dma_map_single(ring->dev->dev->dev,
+ dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
buf, len, DMA_TO_DEVICE);
} else {
- dmaaddr = dma_map_single(ring->dev->dev->dev,
+ dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
buf, len, DMA_FROM_DEVICE);
}
@@ -388,9 +388,10 @@ static inline
dma_addr_t addr, size_t len, int tx)
{
if (tx) {
- dma_unmap_single(ring->dev->dev->dev, addr, len, DMA_TO_DEVICE);
+ dma_unmap_single(ring->dev->dev->dma_dev,
+ addr, len, DMA_TO_DEVICE);
} else {
- dma_unmap_single(ring->dev->dev->dev,
+ dma_unmap_single(ring->dev->dev->dma_dev,
addr, len, DMA_FROM_DEVICE);
}
}
@@ -400,7 +401,7 @@ static inline
dma_addr_t addr, size_t len)
{
B43_WARN_ON(ring->tx);
- dma_sync_single_for_cpu(ring->dev->dev->dev,
+ dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
addr, len, DMA_FROM_DEVICE);
}
@@ -409,7 +410,7 @@ static inline
dma_addr_t addr, size_t len)
{
B43_WARN_ON(ring->tx);
- dma_sync_single_for_device(ring->dev->dev->dev,
+ dma_sync_single_for_device(ring->dev->dev->dma_dev,
addr, len, DMA_FROM_DEVICE);
}
@@ -425,7 +426,7 @@ static inline
static int alloc_ringmemory(struct b43_dmaring *ring)
{
- struct device *dev = ring->dev->dev->dev;
+ struct device *dma_dev = ring->dev->dev->dma_dev;
gfp_t flags = GFP_KERNEL;
/* The specs call for 4K buffers for 30- and 32-bit DMA with 4K
@@ -439,7 +440,7 @@ static int alloc_ringmemory(struct b43_dmaring *ring)
*/
if (ring->type == B43_DMA_64BIT)
flags |= GFP_DMA;
- ring->descbase = dma_alloc_coherent(dev, B43_DMA_RINGMEMSIZE,
+ ring->descbase = dma_alloc_coherent(dma_dev, B43_DMA_RINGMEMSIZE,
&(ring->dmabase), flags);
if (!ring->descbase) {
b43err(ring->dev->wl, "DMA ringmemory allocation failed\n");
@@ -452,9 +453,9 @@ static int alloc_ringmemory(struct b43_dmaring *ring)
static void free_ringmemory(struct b43_dmaring *ring)
{
- struct device *dev = ring->dev->dev->dev;
+ struct device *dma_dev = ring->dev->dev->dma_dev;
- dma_free_coherent(dev, B43_DMA_RINGMEMSIZE,
+ dma_free_coherent(dma_dev, B43_DMA_RINGMEMSIZE,
ring->descbase, ring->dmabase);
}
@@ -854,7 +855,7 @@ struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev,
goto err_kfree_meta;
/* test for ability to dma to txhdr_cache */
- dma_test = dma_map_single(dev->dev->dev,
+ dma_test = dma_map_single(dev->dev->dma_dev,
ring->txhdr_cache,
b43_txhdr_size(dev),
DMA_TO_DEVICE);
@@ -869,7 +870,7 @@ struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev,
if (!ring->txhdr_cache)
goto err_kfree_meta;
- dma_test = dma_map_single(dev->dev->dev,
+ dma_test = dma_map_single(dev->dev->dma_dev,
ring->txhdr_cache,
b43_txhdr_size(dev),
DMA_TO_DEVICE);
@@ -883,7 +884,7 @@ struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev,
}
}
- dma_unmap_single(dev->dev->dev,
+ dma_unmap_single(dev->dev->dma_dev,
dma_test, b43_txhdr_size(dev),
DMA_TO_DEVICE);
}