openwrt-xburst/package/mac80211/patches-old/002-ssb-backport.patch

This patch backports the interface of the b43 and b43legacy driver from 
the new to the old ssb API. This patch is needed as long the old ssb
version is used in the kernel for broadcom devices. After upgrading to
ssb version out of kernel 2.6.27 or later this patch is not needed any more.

--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -328,11 +328,11 @@ static inline
 	dma_addr_t dmaaddr;
 
 	if (tx) {
-		dmaaddr = ssb_dma_map_single(ring->dev->dev,
-					     buf, len, DMA_TO_DEVICE);
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
+					 buf, len, DMA_TO_DEVICE);
 	} else {
-		dmaaddr = ssb_dma_map_single(ring->dev->dev,
-					     buf, len, DMA_FROM_DEVICE);
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
+					 buf, len, DMA_FROM_DEVICE);
 	}
 
 	return dmaaddr;
@@ -343,11 +343,11 @@ static inline
 			  dma_addr_t addr, size_t len, int tx)
 {
 	if (tx) {
-		ssb_dma_unmap_single(ring->dev->dev,
-				     addr, len, DMA_TO_DEVICE);
+		dma_unmap_single(ring->dev->dev->dma_dev,
+				 addr, len, DMA_TO_DEVICE);
 	} else {
-		ssb_dma_unmap_single(ring->dev->dev,
-				     addr, len, DMA_FROM_DEVICE);
+		dma_unmap_single(ring->dev->dev->dma_dev,
+				 addr, len, DMA_FROM_DEVICE);
 	}
 }
 
@@ -356,8 +356,8 @@ static inline
 				 dma_addr_t addr, size_t len)
 {
 	B43_WARN_ON(ring->tx);
-	ssb_dma_sync_single_for_cpu(ring->dev->dev,
-				    addr, len, DMA_FROM_DEVICE);
+	dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
+				addr, len, DMA_FROM_DEVICE);
 }
 
 static inline
@@ -365,8 +365,8 @@ static inline
 				    dma_addr_t addr, size_t len)
 {
 	B43_WARN_ON(ring->tx);
-	ssb_dma_sync_single_for_device(ring->dev->dev,
-				       addr, len, DMA_FROM_DEVICE);
+	dma_sync_single_for_device(ring->dev->dev->dma_dev,
+				   addr, len, DMA_FROM_DEVICE);
 }
 
 static inline
@@ -381,6 +381,7 @@ static inline
 
 static int alloc_ringmemory(struct b43_dmaring *ring)
 {
+	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
@@ -391,14 +392,11 @@ static int alloc_ringmemory(struct b43_d
 	 * For unknown reasons - possibly a hardware error - the BCM4311 rev
 	 * 02, which uses 64-bit DMA, needs the ring buffer in very low memory,
 	 * which accounts for the GFP_DMA flag below.
-	 *
-	 * The flags here must match the flags in free_ringmemory below!
 	 */
 	if (ring->type == B43_DMA_64BIT)
 		flags |= GFP_DMA;
-	ring->descbase = ssb_dma_alloc_consistent(ring->dev->dev,
-						  B43_DMA_RINGMEMSIZE,
-						  &(ring->dmabase), flags);
+	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");
 		return -ENOMEM;
@@ -410,13 +408,10 @@ static int alloc_ringmemory(struct b43_d
 
 static void free_ringmemory(struct b43_dmaring *ring)
 {
-	gfp_t flags = GFP_KERNEL;
-
-	if (ring->type == B43_DMA_64BIT)
-		flags |= GFP_DMA;
+	struct device *dma_dev = ring->dev->dev->dma_dev;
 
-	ssb_dma_free_consistent(ring->dev->dev, B43_DMA_RINGMEMSIZE,
-				ring->descbase, ring->dmabase, flags);
+	dma_free_coherent(dma_dev, B43_DMA_RINGMEMSIZE,
+			  ring->descbase, ring->dmabase);
 }
 
 /* Reset the RX DMA channel */
@@ -523,7 +518,7 @@ static bool b43_dma_mapping_error(struct
 				  dma_addr_t addr,
 				  size_t buffersize, bool dma_to_device)
 {
-	if (unlikely(ssb_dma_mapping_error(ring->dev->dev, addr)))
+	if (unlikely(dma_mapping_error(addr)))
 		return 1;
 
 	switch (ring->type) {
@@ -849,10 +844,10 @@ struct b43_dmaring *b43_setup_dmaring(st
 			goto err_kfree_meta;
 
 		/* test for ability to dma to txhdr_cache */
-		dma_test = ssb_dma_map_single(dev->dev,
-					      ring->txhdr_cache,
-					      b43_txhdr_size(dev),
-					      DMA_TO_DEVICE);
+		dma_test = dma_map_single(dev->dev->dma_dev,
+					  ring->txhdr_cache,
+					  b43_txhdr_size(dev),
+					  DMA_TO_DEVICE);
 
 		if (b43_dma_mapping_error(ring, dma_test,
 					  b43_txhdr_size(dev), 1)) {
@@ -864,10 +859,10 @@ struct b43_dmaring *b43_setup_dmaring(st
 			if (!ring->txhdr_cache)
 				goto err_kfree_meta;
 
-			dma_test = ssb_dma_map_single(dev->dev,
-						      ring->txhdr_cache,
-						      b43_txhdr_size(dev),
-						      DMA_TO_DEVICE);
+			dma_test = dma_map_single(dev->dev->dma_dev,
+						  ring->txhdr_cache,
+						  b43_txhdr_size(dev),
+						  DMA_TO_DEVICE);
 
 			if (b43_dma_mapping_error(ring, dma_test,
 						  b43_txhdr_size(dev), 1)) {
@@ -878,9 +873,9 @@ struct b43_dmaring *b43_setup_dmaring(st
 			}
 		}
 
-		ssb_dma_unmap_single(dev->dev,
-				     dma_test, b43_txhdr_size(dev),
-				     DMA_TO_DEVICE);
+		dma_unmap_single(dev->dev->dma_dev,
+				 dma_test, b43_txhdr_size(dev),
+				 DMA_TO_DEVICE);
 	}
 
 	err = alloc_ringmemory(ring);
--- a/drivers/net/wireless/b43legacy/dma.c
+++ b/drivers/net/wireless/b43legacy/dma.c
@@ -393,13 +393,13 @@ dma_addr_t map_descbuffer(struct b43lega
 	dma_addr_t dmaaddr;
 
 	if (tx)
-		dmaaddr = ssb_dma_map_single(ring->dev->dev,
-					     buf, len,
-					     DMA_TO_DEVICE);
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
+					 buf, len,
+					 DMA_TO_DEVICE);
 	else
-		dmaaddr = ssb_dma_map_single(ring->dev->dev,
-					     buf, len,
-					     DMA_FROM_DEVICE);
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
+					 buf, len,
+					 DMA_FROM_DEVICE);
 
 	return dmaaddr;
 }
@@ -411,13 +411,13 @@ void unmap_descbuffer(struct b43legacy_d
 		      int tx)
 {
 	if (tx)
-		ssb_dma_unmap_single(ring->dev->dev,
-				     addr, len,
-				     DMA_TO_DEVICE);
+		dma_unmap_single(ring->dev->dev->dma_dev,
+				 addr, len,
+				 DMA_TO_DEVICE);
 	else
-		ssb_dma_unmap_single(ring->dev->dev,
-				     addr, len,
-				     DMA_FROM_DEVICE);
+		dma_unmap_single(ring->dev->dev->dma_dev,
+				 addr, len,
+				 DMA_FROM_DEVICE);
 }
 
 static inline
@@ -427,8 +427,8 @@ void sync_descbuffer_for_cpu(struct b43l
 {
 	B43legacy_WARN_ON(ring->tx);
 
-	ssb_dma_sync_single_for_cpu(ring->dev->dev,
-				    addr, len, DMA_FROM_DEVICE);
+	dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
+				addr, len, DMA_FROM_DEVICE);
 }
 
 static inline
@@ -438,8 +438,8 @@ void sync_descbuffer_for_device(struct b
 {
 	B43legacy_WARN_ON(ring->tx);
 
-	ssb_dma_sync_single_for_device(ring->dev->dev,
-				       addr, len, DMA_FROM_DEVICE);
+	dma_sync_single_for_device(ring->dev->dev->dma_dev,
+				   addr, len, DMA_FROM_DEVICE);
 }
 
 static inline
@@ -458,11 +458,10 @@ void free_descriptor_buffer(struct b43le
 
 static int alloc_ringmemory(struct b43legacy_dmaring *ring)
 {
-	/* 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);
+	struct device *dma_dev = ring->dev->dev->dma_dev;
+
+	ring->descbase = dma_alloc_coherent(dma_dev, B43legacy_DMA_RINGMEMSIZE,
+					    &(ring->dmabase), GFP_KERNEL);
 	if (!ring->descbase) {
 		b43legacyerr(ring->dev->wl, "DMA ringmemory allocation"
 			     " failed\n");
@@ -475,8 +474,10 @@ static int alloc_ringmemory(struct b43le
 
 static void free_ringmemory(struct b43legacy_dmaring *ring)
 {
-	ssb_dma_free_consistent(ring->dev->dev, B43legacy_DMA_RINGMEMSIZE,
-				ring->descbase, ring->dmabase, GFP_KERNEL);
+	struct device *dma_dev = ring->dev->dev->dma_dev;
+
+	dma_free_coherent(dma_dev, B43legacy_DMA_RINGMEMSIZE,
+			  ring->descbase, ring->dmabase);
 }
 
 /* Reset the RX DMA channel */
@@ -588,7 +589,7 @@ static bool b43legacy_dma_mapping_error(
 					 size_t buffersize,
 					 bool dma_to_device)
 {
-	if (unlikely(ssb_dma_mapping_error(ring->dev->dev, addr)))
+	if (unlikely(dma_mapping_error(addr)))
 		return 1;
 
 	switch (ring->type) {
@@ -905,9 +906,9 @@ struct b43legacy_dmaring *b43legacy_setu
 			goto err_kfree_meta;
 
 		/* test for ability to dma to txhdr_cache */
-		dma_test = ssb_dma_map_single(dev->dev, ring->txhdr_cache,
-					      sizeof(struct b43legacy_txhdr_fw3),
-					      DMA_TO_DEVICE);
+		dma_test = dma_map_single(dev->dev->dma_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)) {
@@ -919,7 +920,7 @@ struct b43legacy_dmaring *b43legacy_setu
 			if (!ring->txhdr_cache)
 				goto err_kfree_meta;
 
-				dma_test = ssb_dma_map_single(dev->dev,
+			dma_test = dma_map_single(dev->dev->dma_dev,
 					ring->txhdr_cache,
 					sizeof(struct b43legacy_txhdr_fw3),
 					DMA_TO_DEVICE);
@@ -929,9 +930,9 @@ struct b43legacy_dmaring *b43legacy_setu
 				goto err_kfree_txhdr_cache;
 		}
 
-		ssb_dma_unmap_single(dev->dev, dma_test,
-				     sizeof(struct b43legacy_txhdr_fw3),
-				     DMA_TO_DEVICE);
+		dma_unmap_single(dev->dev->dma_dev,
+				 dma_test, sizeof(struct b43legacy_txhdr_fw3),
+				 DMA_TO_DEVICE);
 	}
 
 	ring->nr_slots = nr_slots;