the scheduled bcm43xx removal

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: <Larry.Finger@lwfinger.net>
Cc: <stefano.brivio@polimi.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 1263 deletions

diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_dma.c b/drivers/net/wireless/bcm43xx/bcm43xx_dma.c
deleted file mode 100644
index 1f7731fcfbd5..000000000000
--- a/drivers/net/wireless/bcm43xx/bcm43xx_dma.c
+++ /dev/null
@@ -1,1263 +0,0 @@
-/*
-
-  Broadcom BCM43xx wireless driver
-
-  DMA ringbuffer and descriptor allocation/management
-
-  Copyright (c) 2005, 2006 Michael Buesch <mbuesch@freenet.de>
-
-  Some code in this file is derived from the b44.c driver
-  Copyright (C) 2002 David S. Miller
-  Copyright (C) Pekka Pietikainen
-
-  This program is free software; you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
-  (at your option) any later version.
-
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program; see the file COPYING.  If not, write to
-  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
-  Boston, MA 02110-1301, USA.
-
-*/
-
-#include "bcm43xx.h"
-#include "bcm43xx_dma.h"
-#include "bcm43xx_main.h"
-#include "bcm43xx_debugfs.h"
-#include "bcm43xx_power.h"
-#include "bcm43xx_xmit.h"
-
-#include <linux/dma-mapping.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/skbuff.h>
-
-
-static inline int free_slots(struct bcm43xx_dmaring *ring)
-{
-	return (ring->nr_slots - ring->used_slots);
-}
-
-static inline int next_slot(struct bcm43xx_dmaring *ring, int slot)
-{
-	assert(slot >= -1 && slot <= ring->nr_slots - 1);
-	if (slot == ring->nr_slots - 1)
-		return 0;
-	return slot + 1;
-}
-
-static inline int prev_slot(struct bcm43xx_dmaring *ring, int slot)
-{
-	assert(slot >= 0 && slot <= ring->nr_slots - 1);
-	if (slot == 0)
-		return ring->nr_slots - 1;
-	return slot - 1;
-}
-
-/* Request a slot for usage. */
-static inline
-int request_slot(struct bcm43xx_dmaring *ring)
-{
-	int slot;
-
-	assert(ring->tx);
-	assert(!ring->suspended);
-	assert(free_slots(ring) != 0);
-
-	slot = next_slot(ring, ring->current_slot);
-	ring->current_slot = slot;
-	ring->used_slots++;
-
-	/* Check the number of available slots and suspend TX,
-	 * if we are running low on free slots.
-	 */
-	if (unlikely(free_slots(ring) < ring->suspend_mark)) {
-		netif_stop_queue(ring->bcm->net_dev);
-		ring->suspended = 1;
-	}
-#ifdef CONFIG_BCM43XX_DEBUG
-	if (ring->used_slots > ring->max_used_slots)
-		ring->max_used_slots = ring->used_slots;
-#endif /* CONFIG_BCM43XX_DEBUG*/
-
-	return slot;
-}
-
-/* Return a slot to the free slots. */
-static inline
-void return_slot(struct bcm43xx_dmaring *ring, int slot)
-{
-	assert(ring->tx);
-
-	ring->used_slots--;
-
-	/* Check if TX is suspended and check if we have
-	 * enough free slots to resume it again.
-	 */
-	if (unlikely(ring->suspended)) {
-		if (free_slots(ring) >= ring->resume_mark) {
-			ring->suspended = 0;
-			netif_wake_queue(ring->bcm->net_dev);
-		}
-	}
-}
-
-u16 bcm43xx_dmacontroller_base(int dma64bit, int controller_idx)
-{
-	static const u16 map64[] = {
-		BCM43xx_MMIO_DMA64_BASE0,
-		BCM43xx_MMIO_DMA64_BASE1,
-		BCM43xx_MMIO_DMA64_BASE2,
-		BCM43xx_MMIO_DMA64_BASE3,
-		BCM43xx_MMIO_DMA64_BASE4,
-		BCM43xx_MMIO_DMA64_BASE5,
-	};
-	static const u16 map32[] = {
-		BCM43xx_MMIO_DMA32_BASE0,
-		BCM43xx_MMIO_DMA32_BASE1,
-		BCM43xx_MMIO_DMA32_BASE2,
-		BCM43xx_MMIO_DMA32_BASE3,
-		BCM43xx_MMIO_DMA32_BASE4,
-		BCM43xx_MMIO_DMA32_BASE5,
-	};
-
-	if (dma64bit) {
-		assert(controller_idx >= 0 &&
-		       controller_idx < ARRAY_SIZE(map64));
-		return map64[controller_idx];
-	}
-	assert(controller_idx >= 0 &&
-	       controller_idx < ARRAY_SIZE(map32));
-	return map32[controller_idx];
-}
-
-static inline
-dma_addr_t map_descbuffer(struct bcm43xx_dmaring *ring,
-			  unsigned char *buf,
-			  size_t len,
-			  int tx)
-{
-	dma_addr_t dmaaddr;
-	int direction = PCI_DMA_FROMDEVICE;
-
-	if (tx)
-		direction = PCI_DMA_TODEVICE;
-
-	dmaaddr = pci_map_single(ring->bcm->pci_dev,
-					 buf, len,
-					 direction);
-
-	return dmaaddr;
-}
-
-static inline
-void unmap_descbuffer(struct bcm43xx_dmaring *ring,
-		      dma_addr_t addr,
-		      size_t len,
-		      int tx)
-{
-	if (tx) {
-		pci_unmap_single(ring->bcm->pci_dev,
-				 addr, len,
-				 PCI_DMA_TODEVICE);
-	} else {
-		pci_unmap_single(ring->bcm->pci_dev,
-				 addr, len,
-				 PCI_DMA_FROMDEVICE);
-	}
-}
-
-static inline
-void sync_descbuffer_for_cpu(struct bcm43xx_dmaring *ring,
-			     dma_addr_t addr,
-			     size_t len)
-{
-	assert(!ring->tx);
-
-	pci_dma_sync_single_for_cpu(ring->bcm->pci_dev,
-				    addr, len, PCI_DMA_FROMDEVICE);
-}
-
-static inline
-void sync_descbuffer_for_device(struct bcm43xx_dmaring *ring,
-				dma_addr_t addr,
-				size_t len)
-{
-	assert(!ring->tx);
-
-	pci_dma_sync_single_for_cpu(ring->bcm->pci_dev,
-				    addr, len, PCI_DMA_TODEVICE);
-}
-
-/* Unmap and free a descriptor buffer. */
-static inline
-void free_descriptor_buffer(struct bcm43xx_dmaring *ring,
-			    struct bcm43xx_dmadesc_meta *meta,
-			    int irq_context)
-{
-	assert(meta->skb);
-	if (irq_context)
-		dev_kfree_skb_irq(meta->skb);
-	else
-		dev_kfree_skb(meta->skb);
-	meta->skb = NULL;
-}
-
-static int alloc_ringmemory(struct bcm43xx_dmaring *ring)
-{
-	ring->descbase = pci_alloc_consistent(ring->bcm->pci_dev, BCM43xx_DMA_RINGMEMSIZE,
-					    &(ring->dmabase));
-	if (!ring->descbase) {
-		/* Allocation may have failed due to pci_alloc_consistent
-		   insisting on use of GFP_DMA, which is more restrictive
-		   than necessary...  */
-		struct dma_desc *rx_ring;
-		dma_addr_t rx_ring_dma;
-
-		rx_ring = kzalloc(BCM43xx_DMA_RINGMEMSIZE, GFP_KERNEL);
-		if (!rx_ring)
-			goto out_err;
-
-		rx_ring_dma = pci_map_single(ring->bcm->pci_dev, rx_ring,
-					     BCM43xx_DMA_RINGMEMSIZE,
-					     PCI_DMA_BIDIRECTIONAL);
-
-		if (pci_dma_mapping_error(rx_ring_dma) ||
-		    rx_ring_dma + BCM43xx_DMA_RINGMEMSIZE > ring->bcm->dma_mask) {
-			/* Sigh... */
-			if (!pci_dma_mapping_error(rx_ring_dma))
-				pci_unmap_single(ring->bcm->pci_dev,
-						 rx_ring_dma, BCM43xx_DMA_RINGMEMSIZE,
-						 PCI_DMA_BIDIRECTIONAL);
-			rx_ring_dma = pci_map_single(ring->bcm->pci_dev,
-						 rx_ring, BCM43xx_DMA_RINGMEMSIZE,
-						 PCI_DMA_BIDIRECTIONAL);
-			if (pci_dma_mapping_error(rx_ring_dma) ||
-			    rx_ring_dma + BCM43xx_DMA_RINGMEMSIZE > ring->bcm->dma_mask) {
-				assert(0);
-				if (!pci_dma_mapping_error(rx_ring_dma))
-					pci_unmap_single(ring->bcm->pci_dev,
-							 rx_ring_dma, BCM43xx_DMA_RINGMEMSIZE,
-							 PCI_DMA_BIDIRECTIONAL);
-				goto out_err;
-			}
-                }
-
-                ring->descbase = rx_ring;
-                ring->dmabase = rx_ring_dma;
-	}
-	memset(ring->descbase, 0, BCM43xx_DMA_RINGMEMSIZE);
-
-	return 0;
-out_err:
-	printk(KERN_ERR PFX "DMA ringmemory allocation failed\n");
-	return -ENOMEM;
-}
-
-static void free_ringmemory(struct bcm43xx_dmaring *ring)
-{
-	struct device *dev = &(ring->bcm->pci_dev->dev);
-
-	dma_free_coherent(dev, BCM43xx_DMA_RINGMEMSIZE,
-			  ring->descbase, ring->dmabase);
-}
-
-/* Reset the RX DMA channel */
-int bcm43xx_dmacontroller_rx_reset(struct bcm43xx_private *bcm,
-				   u16 mmio_base, int dma64)
-{
-	int i;
-	u32 value;
-	u16 offset;
-
-	offset = dma64 ? BCM43xx_DMA64_RXCTL : BCM43xx_DMA32_RXCTL;
-	bcm43xx_write32(bcm, mmio_base + offset, 0);
-	for (i = 0; i < 1000; i++) {
-		offset = dma64 ? BCM43xx_DMA64_RXSTATUS : BCM43xx_DMA32_RXSTATUS;
-		value = bcm43xx_read32(bcm, mmio_base + offset);
-		if (dma64) {
-			value &= BCM43xx_DMA64_RXSTAT;
-			if (value == BCM43xx_DMA64_RXSTAT_DISABLED) {
-				i = -1;
-				break;
-			}
-		} else {
-			value &= BCM43xx_DMA32_RXSTATE;
-			if (value == BCM43xx_DMA32_RXSTAT_DISABLED) {
-				i = -1;
-				break;
-			}
-		}
-		udelay(10);
-	}
-	if (i != -1) {
-		printk(KERN_ERR PFX "Error: Wait on DMA RX status timed out.\n");
-		return -ENODEV;
-	}
-
-	return 0;
-}
-
-/* Reset the RX DMA channel */
-int bcm43xx_dmacontroller_tx_reset(struct bcm43xx_private *bcm,
-				   u16 mmio_base, int dma64)
-{
-	int i;
-	u32 value;
-	u16 offset;
-
-	for (i = 0; i < 1000; i++) {
-		offset = dma64 ? BCM43xx_DMA64_TXSTATUS : BCM43xx_DMA32_TXSTATUS;
-		value = bcm43xx_read32(bcm, mmio_base + offset);
-		if (dma64) {
-			value &= BCM43xx_DMA64_TXSTAT;
-			if (value == BCM43xx_DMA64_TXSTAT_DISABLED ||
-			    value == BCM43xx_DMA64_TXSTAT_IDLEWAIT ||
-			    value == BCM43xx_DMA64_TXSTAT_STOPPED)
-				break;
-		} else {
-			value &= BCM43xx_DMA32_TXSTATE;
-			if (value == BCM43xx_DMA32_TXSTAT_DISABLED ||
-			    value == BCM43xx_DMA32_TXSTAT_IDLEWAIT ||
-			    value == BCM43xx_DMA32_TXSTAT_STOPPED)
-				break;
-		}
-		udelay(10);
-	}
-	offset = dma64 ? BCM43xx_DMA64_TXCTL : BCM43xx_DMA32_TXCTL;
-	bcm43xx_write32(bcm, mmio_base + offset, 0);
-	for (i = 0; i < 1000; i++) {
-		offset = dma64 ? BCM43xx_DMA64_TXSTATUS : BCM43xx_DMA32_TXSTATUS;
-		value = bcm43xx_read32(bcm, mmio_base + offset);
-		if (dma64) {
-			value &= BCM43xx_DMA64_TXSTAT;
-			if (value == BCM43xx_DMA64_TXSTAT_DISABLED) {
-				i = -1;
-				break;
-			}
-		} else {
-			value &= BCM43xx_DMA32_TXSTATE;
-			if (value == BCM43xx_DMA32_TXSTAT_DISABLED) {
-				i = -1;
-				break;
-			}
-		}
-		udelay(10);
-	}
-	if (i != -1) {
-		printk(KERN_ERR PFX "Error: Wait on DMA TX status timed out.\n");
-		return -ENODEV;
-	}
-	/* ensure the reset is completed. */
-	udelay(300);
-
-	return 0;
-}
-
-static void fill_descriptor(struct bcm43xx_dmaring *ring,
-			    struct bcm43xx_dmadesc_generic *desc,
-			    dma_addr_t dmaaddr,
-			    u16 bufsize,
-			    int start, int end, int irq)
-{
-	int slot;
-
-	slot = bcm43xx_dma_desc2idx(ring, desc);
-	assert(slot >= 0 && slot < ring->nr_slots);
-
-	if (ring->dma64) {
-		u32 ctl0 = 0, ctl1 = 0;
-		u32 addrlo, addrhi;
-		u32 addrext;
-
-		addrlo = (u32)(dmaaddr & 0xFFFFFFFF);
-		addrhi = (((u64)dmaaddr >> 32) & ~BCM43xx_DMA64_ROUTING);
-		addrext = (((u64)dmaaddr >> 32) >> BCM43xx_DMA64_ROUTING_SHIFT);
-		addrhi |= ring->routing;
-		if (slot == ring->nr_slots - 1)
-			ctl0 |= BCM43xx_DMA64_DCTL0_DTABLEEND;
-		if (start)
-			ctl0 |= BCM43xx_DMA64_DCTL0_FRAMESTART;
-		if (end)
-			ctl0 |= BCM43xx_DMA64_DCTL0_FRAMEEND;
-		if (irq)
-			ctl0 |= BCM43xx_DMA64_DCTL0_IRQ;
-		ctl1 |= (bufsize - ring->frameoffset)
-			& BCM43xx_DMA64_DCTL1_BYTECNT;
-		ctl1 |= (addrext << BCM43xx_DMA64_DCTL1_ADDREXT_SHIFT)
-			& BCM43xx_DMA64_DCTL1_ADDREXT_MASK;
-
-		desc->dma64.control0 = cpu_to_le32(ctl0);
-		desc->dma64.control1 = cpu_to_le32(ctl1);
-		desc->dma64.address_low = cpu_to_le32(addrlo);
-		desc->dma64.address_high = cpu_to_le32(addrhi);
-	} else {
-		u32 ctl;
-		u32 addr;
-		u32 addrext;
-
-		addr = (u32)(dmaaddr & ~BCM43xx_DMA32_ROUTING);
-		addrext = (u32)(dmaaddr & BCM43xx_DMA32_ROUTING)
-			   >> BCM43xx_DMA32_ROUTING_SHIFT;
-		addr |= ring->routing;
-		ctl = (bufsize - ring->frameoffset)
-		      & BCM43xx_DMA32_DCTL_BYTECNT;
-		if (slot == ring->nr_slots - 1)
-			ctl |= BCM43xx_DMA32_DCTL_DTABLEEND;
-		if (start)
-			ctl |= BCM43xx_DMA32_DCTL_FRAMESTART;
-		if (end)
-			ctl |= BCM43xx_DMA32_DCTL_FRAMEEND;
-		if (irq)
-			ctl |= BCM43xx_DMA32_DCTL_IRQ;
-		ctl |= (addrext << BCM43xx_DMA32_DCTL_ADDREXT_SHIFT)
-		       & BCM43xx_DMA32_DCTL_ADDREXT_MASK;
-
-		desc->dma32.control = cpu_to_le32(ctl);
-		desc->dma32.address = cpu_to_le32(addr);
-	}
-}
-
-static int setup_rx_descbuffer(struct bcm43xx_dmaring *ring,
-			       struct bcm43xx_dmadesc_generic *desc,
-			       struct bcm43xx_dmadesc_meta *meta,
-			       gfp_t gfp_flags)
-{
-	struct bcm43xx_rxhdr *rxhdr;
-	struct bcm43xx_hwxmitstatus *xmitstat;
-	dma_addr_t dmaaddr;
-	struct sk_buff *skb;
-
-	assert(!ring->tx);
-
-	skb = __dev_alloc_skb(ring->rx_buffersize, gfp_flags);
-	if (unlikely(!skb))
-		return -ENOMEM;
-	dmaaddr = map_descbuffer(ring, skb->data, ring->rx_buffersize, 0);
-	/* This hardware bug work-around adapted from the b44 driver.
-	   The chip may be unable to do PCI DMA to/from anything above 1GB */
-	if (pci_dma_mapping_error(dmaaddr) ||
-	    dmaaddr + ring->rx_buffersize > ring->bcm->dma_mask) {
-		/* This one has 30-bit addressing... */
-		if (!pci_dma_mapping_error(dmaaddr))
-			pci_unmap_single(ring->bcm->pci_dev,
-					 dmaaddr, ring->rx_buffersize,
-					 PCI_DMA_FROMDEVICE);
-		dev_kfree_skb_any(skb);
-		skb = __dev_alloc_skb(ring->rx_buffersize,GFP_DMA);
-		if (skb == NULL)
-			return -ENOMEM;
-		dmaaddr = pci_map_single(ring->bcm->pci_dev,
-					 skb->data, ring->rx_buffersize,
-					 PCI_DMA_FROMDEVICE);
-		if (pci_dma_mapping_error(dmaaddr) ||
-		    dmaaddr + ring->rx_buffersize > ring->bcm->dma_mask) {
-			assert(0);
-			dev_kfree_skb_any(skb);
-			return -ENOMEM;
-		}
-	}
-	meta->skb = skb;
-	meta->dmaaddr = dmaaddr;
-	skb->dev = ring->bcm->net_dev;
-
-	fill_descriptor(ring, desc, dmaaddr,
-			ring->rx_buffersize, 0, 0, 0);
-
-	rxhdr = (struct bcm43xx_rxhdr *)(skb->data);
-	rxhdr->frame_length = 0;
-	rxhdr->flags1 = 0;
-	xmitstat = (struct bcm43xx_hwxmitstatus *)(skb->data);
-	xmitstat->cookie = 0;
-
-	return 0;
-}
-
-/* Allocate the initial descbuffers.
- * This is used for an RX ring only.
- */
-static int alloc_initial_descbuffers(struct bcm43xx_dmaring *ring)
-{
-	int i, err = -ENOMEM;
-	struct bcm43xx_dmadesc_generic *desc;
-	struct bcm43xx_dmadesc_meta *meta;
-
-	for (i = 0; i < ring->nr_slots; i++) {
-		desc = bcm43xx_dma_idx2desc(ring, i, &meta);
-
-		err = setup_rx_descbuffer(ring, desc, meta, GFP_KERNEL);
-		if (err)
-			goto err_unwind;
-	}
-	mb();
-	ring->used_slots = ring->nr_slots;
-	err = 0;
-out:
-	return err;
-
-err_unwind:
-	for (i--; i >= 0; i--) {
-		desc = bcm43xx_dma_idx2desc(ring, i, &meta);
-
-		unmap_descbuffer(ring, meta->dmaaddr, ring->rx_buffersize, 0);
-		dev_kfree_skb(meta->skb);
-	}
-	goto out;
-}
-
-/* Do initial setup of the DMA controller.
- * Reset the controller, write the ring busaddress
- * and switch the "enable" bit on.
- */
-static int dmacontroller_setup(struct bcm43xx_dmaring *ring)
-{
-	int err = 0;
-	u32 value;
-	u32 addrext;
-
-	if (ring->tx) {
-		if (ring->dma64) {
-			u64 ringbase = (u64)(ring->dmabase);
-
-			addrext = ((ringbase >> 32) >> BCM43xx_DMA64_ROUTING_SHIFT);
-			value = BCM43xx_DMA64_TXENABLE;
-			value |= (addrext << BCM43xx_DMA64_TXADDREXT_SHIFT)
-				& BCM43xx_DMA64_TXADDREXT_MASK;
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_TXCTL, value);
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_TXRINGLO,
-					(ringbase & 0xFFFFFFFF));
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_TXRINGHI,
-					((ringbase >> 32) & ~BCM43xx_DMA64_ROUTING)
-					| ring->routing);
-		} else {
-			u32 ringbase = (u32)(ring->dmabase);
-
-			addrext = (ringbase >> BCM43xx_DMA32_ROUTING_SHIFT);
-			value = BCM43xx_DMA32_TXENABLE;
-			value |= (addrext << BCM43xx_DMA32_TXADDREXT_SHIFT)
-				& BCM43xx_DMA32_TXADDREXT_MASK;
-			bcm43xx_dma_write(ring, BCM43xx_DMA32_TXCTL, value);
-			bcm43xx_dma_write(ring, BCM43xx_DMA32_TXRING,
-					(ringbase & ~BCM43xx_DMA32_ROUTING)
-					| ring->routing);
-		}
-	} else {
-		err = alloc_initial_descbuffers(ring);
-		if (err)
-			goto out;
-		if (ring->dma64) {
-			u64 ringbase = (u64)(ring->dmabase);
-
-			addrext = ((ringbase >> 32) >> BCM43xx_DMA64_ROUTING_SHIFT);
-			value = (ring->frameoffset << BCM43xx_DMA64_RXFROFF_SHIFT);
-			value |= BCM43xx_DMA64_RXENABLE;
-			value |= (addrext << BCM43xx_DMA64_RXADDREXT_SHIFT)
-				& BCM43xx_DMA64_RXADDREXT_MASK;
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_RXCTL, value);
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_RXRINGLO,
-					(ringbase & 0xFFFFFFFF));
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_RXRINGHI,
-					((ringbase >> 32) & ~BCM43xx_DMA64_ROUTING)
-					| ring->routing);
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_RXINDEX, 200);
-		} else {
-			u32 ringbase = (u32)(ring->dmabase);
-
-			addrext = (ringbase >> BCM43xx_DMA32_ROUTING_SHIFT);
-			value = (ring->frameoffset << BCM43xx_DMA32_RXFROFF_SHIFT);
-			value |= BCM43xx_DMA32_RXENABLE;
-			value |= (addrext << BCM43xx_DMA32_RXADDREXT_SHIFT)
-				& BCM43xx_DMA32_RXADDREXT_MASK;
-			bcm43xx_dma_write(ring, BCM43xx_DMA32_RXCTL, value);
-			bcm43xx_dma_write(ring, BCM43xx_DMA32_RXRING,
-					(ringbase & ~BCM43xx_DMA32_ROUTING)
-					| ring->routing);
-			bcm43xx_dma_write(ring, BCM43xx_DMA32_RXINDEX, 200);
-		}
-	}
-
-out:
-	return err;
-}
-
-/* Shutdown the DMA controller. */
-static void dmacontroller_cleanup(struct bcm43xx_dmaring *ring)
-{
-	if (ring->tx) {
-		bcm43xx_dmacontroller_tx_reset(ring->bcm, ring->mmio_base, ring->dma64);
-		if (ring->dma64) {
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_TXRINGLO, 0);
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_TXRINGHI, 0);
-		} else
-			bcm43xx_dma_write(ring, BCM43xx_DMA32_TXRING, 0);
-	} else {
-		bcm43xx_dmacontroller_rx_reset(ring->bcm, ring->mmio_base, ring->dma64);
-		if (ring->dma64) {
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_RXRINGLO, 0);
-			bcm43xx_dma_write(ring, BCM43xx_DMA64_RXRINGHI, 0);
-		} else
-			bcm43xx_dma_write(ring, BCM43xx_DMA32_RXRING, 0);
-	}
-}
-
-static void free_all_descbuffers(struct bcm43xx_dmaring *ring)
-{
-	struct bcm43xx_dmadesc_generic *desc;
-	struct bcm43xx_dmadesc_meta *meta;
-	int i;
-
-	if (!ring->used_slots)
-		return;
-	for (i = 0; i < ring->nr_slots; i++) {
-		desc = bcm43xx_dma_idx2desc(ring, i, &meta);
-
-		if (!meta->skb) {
-			assert(ring->tx);
-			continue;
-		}
-		if (ring->tx) {
-			unmap_descbuffer(ring, meta->dmaaddr,
-					meta->skb->len, 1);
-		} else {
-			unmap_descbuffer(ring, meta->dmaaddr,
-					ring->rx_buffersize, 0);
-		}
-		free_descriptor_buffer(ring, meta, 0);
-	}
-}
-
-/* Main initialization function. */
-static
-struct bcm43xx_dmaring * bcm43xx_setup_dmaring(struct bcm43xx_private *bcm,
-					       int controller_index,
-					       int for_tx,
-					       int dma64)
-{
-	struct bcm43xx_dmaring *ring;
-	int err;
-	int nr_slots;
-
-	ring = kzalloc(sizeof(*ring), GFP_KERNEL);
-	if (!ring)
-		goto out;
-
-	nr_slots = BCM43xx_RXRING_SLOTS;
-	if (for_tx)
-		nr_slots = BCM43xx_TXRING_SLOTS;
-
-	ring->meta = kcalloc(nr_slots, sizeof(struct bcm43xx_dmadesc_meta),
-			     GFP_KERNEL);
-	if (!ring->meta)
-		goto err_kfree_ring;
-
-	ring->routing = BCM43xx_DMA32_CLIENTTRANS;
-	if (dma64)
-		ring->routing = BCM43xx_DMA64_CLIENTTRANS;
-
-	ring->bcm = bcm;
-	ring->nr_slots = nr_slots;
-	ring->suspend_mark = ring->nr_slots * BCM43xx_TXSUSPEND_PERCENT / 100;
-	ring->resume_mark = ring->nr_slots * BCM43xx_TXRESUME_PERCENT / 100;
-	assert(ring->suspend_mark < ring->resume_mark);
-	ring->mmio_base = bcm43xx_dmacontroller_base(dma64, controller_index);
-	ring->index = controller_index;
-	ring->dma64 = !!dma64;
-	if (for_tx) {
-		ring->tx = 1;
-		ring->current_slot = -1;
-	} else {
-		if (ring->index == 0) {
-			ring->rx_buffersize = BCM43xx_DMA0_RX_BUFFERSIZE;
-			ring->frameoffset = BCM43xx_DMA0_RX_FRAMEOFFSET;
-		} else if (ring->index == 3) {
-			ring->rx_buffersize = BCM43xx_DMA3_RX_BUFFERSIZE;
-			ring->frameoffset = BCM43xx_DMA3_RX_FRAMEOFFSET;
-		} else
-			assert(0);
-	}
-
-	err = alloc_ringmemory(ring);
-	if (err)
-		goto err_kfree_meta;
-	err = dmacontroller_setup(ring);
-	if (err)
-		goto err_free_ringmemory;
-	return ring;
-
-out:
-	printk(KERN_ERR PFX "Error in bcm43xx_setup_dmaring\n");
-	return ring;
-
-err_free_ringmemory:
-	free_ringmemory(ring);
-err_kfree_meta:
-	kfree(ring->meta);
-err_kfree_ring:
-	kfree(ring);
-	ring = NULL;
-	goto out;
-}
-
-/* Main cleanup function. */
-static void bcm43xx_destroy_dmaring(struct bcm43xx_dmaring *ring)
-{
-	if (!ring)
-		return;
-
-	dprintk(KERN_INFO PFX "DMA-%s 0x%04X (%s) max used slots: %d/%d\n",
-		(ring->dma64) ? "64" : "32",
-		ring->mmio_base,
-		(ring->tx) ? "TX" : "RX",
-		ring->max_used_slots, ring->nr_slots);
-	/* Device IRQs are disabled prior entering this function,
-	 * so no need to take care of concurrency with rx handler stuff.
-	 */
-	dmacontroller_cleanup(ring);
-	free_all_descbuffers(ring);
-	free_ringmemory(ring);
-
-	kfree(ring->meta);
-	kfree(ring);
-}
-
-void bcm43xx_dma_free(struct bcm43xx_private *bcm)
-{
-	struct bcm43xx_dma *dma;
-
-	if (bcm43xx_using_pio(bcm))
-		return;
-	dma = bcm43xx_current_dma(bcm);
-
-	bcm43xx_destroy_dmaring(dma->rx_ring3);
-	dma->rx_ring3 = NULL;
-	bcm43xx_destroy_dmaring(dma->rx_ring0);
-	dma->rx_ring0 = NULL;
-
-	bcm43xx_destroy_dmaring(dma->tx_ring5);
-	dma->tx_ring5 = NULL;
-	bcm43xx_destroy_dmaring(dma->tx_ring4);
-	dma->tx_ring4 = NULL;
-	bcm43xx_destroy_dmaring(dma->tx_ring3);
-	dma->tx_ring3 = NULL;
-	bcm43xx_destroy_dmaring(dma->tx_ring2);
-	dma->tx_ring2 = NULL;
-	bcm43xx_destroy_dmaring(dma->tx_ring1);
-	dma->tx_ring1 = NULL;
-	bcm43xx_destroy_dmaring(dma->tx_ring0);
-	dma->tx_ring0 = NULL;
-}
-
-int bcm43xx_dma_init(struct bcm43xx_private *bcm)
-{
-	struct bcm43xx_dma *dma = bcm43xx_current_dma(bcm);
-	struct bcm43xx_dmaring *ring;
-	int err = -ENOMEM;
-	int dma64 = 0;
-
-	bcm->dma_mask = bcm43xx_get_supported_dma_mask(bcm);
-	if (bcm->dma_mask == DMA_64BIT_MASK)
-		dma64 = 1;
-	err = pci_set_dma_mask(bcm->pci_dev, bcm->dma_mask);
-	if (err)
-		goto no_dma;
-	err = pci_set_consistent_dma_mask(bcm->pci_dev, bcm->dma_mask);
-	if (err)
-		goto no_dma;
-
-	/* setup TX DMA channels. */
-	ring = bcm43xx_setup_dmaring(bcm, 0, 1, dma64);
-	if (!ring)
-		goto out;
-	dma->tx_ring0 = ring;
-
-	ring = bcm43xx_setup_dmaring(bcm, 1, 1, dma64);
-	if (!ring)
-		goto err_destroy_tx0;
-	dma->tx_ring1 = ring;
-
-	ring = bcm43xx_setup_dmaring(bcm, 2, 1, dma64);
-	if (!ring)
-		goto err_destroy_tx1;
-	dma->tx_ring2 = ring;
-
-	ring = bcm43xx_setup_dmaring(bcm, 3, 1, dma64);
-	if (!ring)
-		goto err_destroy_tx2;
-	dma->tx_ring3 = ring;
-
-	ring = bcm43xx_setup_dmaring(bcm, 4, 1, dma64);
-	if (!ring)
-		goto err_destroy_tx3;
-	dma->tx_ring4 = ring;
-
-	ring = bcm43xx_setup_dmaring(bcm, 5, 1, dma64);
-	if (!ring)
-		goto err_destroy_tx4;
-	dma->tx_ring5 = ring;
-
-	/* setup RX DMA channels. */
-	ring = bcm43xx_setup_dmaring(bcm, 0, 0, dma64);
-	if (!ring)
-		goto err_destroy_tx5;
-	dma->rx_ring0 = ring;
-
-	if (bcm->current_core->rev < 5) {
-		ring = bcm43xx_setup_dmaring(bcm, 3, 0, dma64);
-		if (!ring)
-			goto err_destroy_rx0;
-		dma->rx_ring3 = ring;
-	}
-
-	dprintk(KERN_INFO PFX "%d-bit DMA initialized\n",
-		(bcm->dma_mask == DMA_64BIT_MASK) ? 64 :
-		(bcm->dma_mask == DMA_32BIT_MASK) ? 32 : 30);
-	err = 0;
-out:
-	return err;
-
-err_destroy_rx0:
-	bcm43xx_destroy_dmaring(dma->rx_ring0);
-	dma->rx_ring0 = NULL;
-err_destroy_tx5:
-	bcm43xx_destroy_dmaring(dma->tx_ring5);
-	dma->tx_ring5 = NULL;
-err_destroy_tx4:
-	bcm43xx_destroy_dmaring(dma->tx_ring4);
-	dma->tx_ring4 = NULL;
-err_destroy_tx3:
-	bcm43xx_destroy_dmaring(dma->tx_ring3);
-	dma->tx_ring3 = NULL;
-err_destroy_tx2:
-	bcm43xx_destroy_dmaring(dma->tx_ring2);
-	dma->tx_ring2 = NULL;
-err_destroy_tx1:
-	bcm43xx_destroy_dmaring(dma->tx_ring1);
-	dma->tx_ring1 = NULL;
-err_destroy_tx0:
-	bcm43xx_destroy_dmaring(dma->tx_ring0);
-	dma->tx_ring0 = NULL;
-no_dma:
-#ifdef CONFIG_BCM43XX_PIO
-	printk(KERN_WARNING PFX "DMA not supported on this device."
-				" Falling back to PIO.\n");
-	bcm->__using_pio = 1;
-	return -ENOSYS;
-#else
-	printk(KERN_ERR PFX "FATAL: DMA not supported and PIO not configured. "
-			    "Please recompile the driver with PIO support.\n");
-	return -ENODEV;
-#endif /* CONFIG_BCM43XX_PIO */
-}
-
-/* Generate a cookie for the TX header. */
-static u16 generate_cookie(struct bcm43xx_dmaring *ring,
-			   int slot)
-{
-	u16 cookie = 0x1000;
-
-	/* Use the upper 4 bits of the cookie as
-	 * DMA controller ID and store the slot number
-	 * in the lower 12 bits.
-	 * Note that the cookie must never be 0, as this
-	 * is a special value used in RX path.
-	 */
-	switch (ring->index) {
-	case 0:
-		cookie = 0xA000;
-		break;
-	case 1:
-		cookie = 0xB000;
-		break;
-	case 2:
-		cookie = 0xC000;
-		break;
-	case 3:
-		cookie = 0xD000;
-		break;
-	case 4:
-		cookie = 0xE000;
-		break;
-	case 5:
-		cookie = 0xF000;
-		break;
-	}
-	assert(((u16)slot & 0xF000) == 0x0000);
-	cookie |= (u16)slot;
-
-	return cookie;
-}
-
-/* Inspect a cookie and find out to which controller/slot it belongs. */
-static
-struct bcm43xx_dmaring * parse_cookie(struct bcm43xx_private *bcm,
-				      u16 cookie, int *slot)
-{
-	struct bcm43xx_dma *dma = bcm43xx_current_dma(bcm);
-	struct bcm43xx_dmaring *ring = NULL;
-
-	switch (cookie & 0xF000) {
-	case 0xA000:
-		ring = dma->tx_ring0;
-		break;
-	case 0xB000:
-		ring = dma->tx_ring1;
-		break;
-	case 0xC000:
-		ring = dma->tx_ring2;
-		break;
-	case 0xD000:
-		ring = dma->tx_ring3;
-		break;
-	case 0xE000:
-		ring = dma->tx_ring4;
-		break;
-	case 0xF000:
-		ring = dma->tx_ring5;
-		break;
-	default:
-		assert(0);
-	}
-	*slot = (cookie & 0x0FFF);
-	assert(*slot >= 0 && *slot < ring->nr_slots);
-
-	return ring;
-}
-
-static void dmacontroller_poke_tx(struct bcm43xx_dmaring *ring,
-				  int slot)
-{
-	u16 offset;
-	int descsize;
-
-	/* Everything is ready to start. Buffers are DMA mapped and
-	 * associated with slots.
-	 * "slot" is the last slot of the new frame we want to transmit.
-	 * Close your seat belts now, please.
-	 */
-	wmb();
-	slot = next_slot(ring, slot);
-	offset = (ring->dma64) ? BCM43xx_DMA64_TXINDEX : BCM43xx_DMA32_TXINDEX;
-	descsize = (ring->dma64) ? sizeof(struct bcm43xx_dmadesc64)
-		: sizeof(struct bcm43xx_dmadesc32);
-	bcm43xx_dma_write(ring, offset,
-			(u32)(slot * descsize));
-}
-
-static void dma_tx_fragment(struct bcm43xx_dmaring *ring,
-			    struct sk_buff *skb,
-			    u8 cur_frag)
-{
-	int slot;
-	struct bcm43xx_dmadesc_generic *desc;
-	struct bcm43xx_dmadesc_meta *meta;
-	dma_addr_t dmaaddr;
-	struct sk_buff *bounce_skb;
-
-	assert(skb_shinfo(skb)->nr_frags == 0);
-
-	slot = request_slot(ring);
-	desc = bcm43xx_dma_idx2desc(ring, slot, &meta);
-
-	/* Add a device specific TX header. */
-	assert(skb_headroom(skb) >= sizeof(struct bcm43xx_txhdr));
-	/* Reserve enough headroom for the device tx header. */
-	__skb_push(skb, sizeof(struct bcm43xx_txhdr));
-	/* Now calculate and add the tx header.
-	 * The tx header includes the PLCP header.
-	 */
-	bcm43xx_generate_txhdr(ring->bcm,
-			       (struct bcm43xx_txhdr *)skb->data,
-			       skb->data + sizeof(struct bcm43xx_txhdr),
-			       skb->len - sizeof(struct bcm43xx_txhdr),
-			       (cur_frag == 0),
-			       generate_cookie(ring, slot));
-	dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1);
-	if (dma_mapping_error(dmaaddr) || dmaaddr + skb->len > ring->bcm->dma_mask) {
-		/* chip cannot handle DMA to/from > 1GB, use bounce buffer (copied from b44 driver) */
-		if (!dma_mapping_error(dmaaddr))
-			unmap_descbuffer(ring, dmaaddr, skb->len, 1);
-		bounce_skb = __dev_alloc_skb(skb->len, GFP_ATOMIC|GFP_DMA);
-		if (!bounce_skb)
-			return;
-		dmaaddr = map_descbuffer(ring, bounce_skb->data, bounce_skb->len, 1);
-		if (dma_mapping_error(dmaaddr) || dmaaddr + skb->len > ring->bcm->dma_mask) {
-			if (!dma_mapping_error(dmaaddr))
-				unmap_descbuffer(ring, dmaaddr, skb->len, 1);
-			dev_kfree_skb_any(bounce_skb);
-			assert(0);
-			return;
-		}
-		skb_copy_from_linear_data(skb, skb_put(bounce_skb, skb->len),
-					  skb->len);
-		dev_kfree_skb_any(skb);
-		skb = bounce_skb;
-	}
-
-	meta->skb = skb;
-	meta->dmaaddr = dmaaddr;
-
-	fill_descriptor(ring, desc, dmaaddr,
-			skb->len, 1, 1, 1);
-
-	/* Now transfer the whole frame. */
-	dmacontroller_poke_tx(ring, slot);
-}
-
-int bcm43xx_dma_tx(struct bcm43xx_private *bcm,
-		   struct ieee80211_txb *txb)
-{
-	/* We just received a packet from the kernel network subsystem.
-	 * Add headers and DMA map the memory. Poke
-	 * the device to send the stuff.
-	 * Note that this is called from atomic context.
-	 */
-	struct bcm43xx_dmaring *ring = bcm43xx_current_dma(bcm)->tx_ring1;
-	u8 i;
-	struct sk_buff *skb;
-
-	assert(ring->tx);
-	if (unlikely(free_slots(ring) < txb->nr_frags)) {
-		/* The queue should be stopped,
-		 * if we are low on free slots.
-		 * If this ever triggers, we have to lower the suspend_mark.
-		 */
-		dprintkl(KERN_ERR PFX "Out of DMA descriptor slots!\n");
-		return -ENOMEM;
-	}
-
-	for (i = 0; i < txb->nr_frags; i++) {
-		skb = txb->fragments[i];
-		/* Take skb from ieee80211_txb_free */
-		txb->fragments[i] = NULL;
-		dma_tx_fragment(ring, skb, i);
-	}
-	ieee80211_txb_free(txb);
-
-	return 0;
-}
-
-void bcm43xx_dma_handle_xmitstatus(struct bcm43xx_private *bcm,
-				   struct bcm43xx_xmitstatus *status)
-{
-	struct bcm43xx_dmaring *ring;
-	struct bcm43xx_dmadesc_generic *desc;
-	struct bcm43xx_dmadesc_meta *meta;
-	int is_last_fragment;
-	int slot;
-	u32 tmp;
-
-	ring = parse_cookie(bcm, status->cookie, &slot);
-	assert(ring);
-	assert(ring->tx);
-	while (1) {
-		assert(slot >= 0 && slot < ring->nr_slots);
-		desc = bcm43xx_dma_idx2desc(ring, slot, &meta);
-
-		if (ring->dma64) {
-			tmp = le32_to_cpu(desc->dma64.control0);
-			is_last_fragment = !!(tmp & BCM43xx_DMA64_DCTL0_FRAMEEND);
-		} else {
-			tmp = le32_to_cpu(desc->dma32.control);
-			is_last_fragment = !!(tmp & BCM43xx_DMA32_DCTL_FRAMEEND);
-		}
-		unmap_descbuffer(ring, meta->dmaaddr, meta->skb->len, 1);
-		free_descriptor_buffer(ring, meta, 1);
-		/* Everything belonging to the slot is unmapped
-		 * and freed, so we can return it.
-		 */
-		return_slot(ring, slot);
-
-		if (is_last_fragment)
-			break;
-		slot = next_slot(ring, slot);
-	}
-	bcm->stats.last_tx = jiffies;
-}
-
-static void dma_rx(struct bcm43xx_dmaring *ring,
-		   int *slot)
-{
-	struct bcm43xx_dmadesc_generic *desc;
-	struct bcm43xx_dmadesc_meta *meta;
-	struct bcm43xx_rxhdr *rxhdr;
-	struct sk_buff *skb;
-	u16 len;
-	int err;
-	dma_addr_t dmaaddr;
-
-	desc = bcm43xx_dma_idx2desc(ring, *slot, &meta);
-
-	sync_descbuffer_for_cpu(ring, meta->dmaaddr, ring->rx_buffersize);
-	skb = meta->skb;
-
-	if (ring->index == 3) {
-		/* We received an xmit status. */
-		struct bcm43xx_hwxmitstatus *hw = (struct bcm43xx_hwxmitstatus *)skb->data;
-		struct bcm43xx_xmitstatus stat;
-		int i = 0;
-
-		stat.cookie = le16_to_cpu(hw->cookie);
-		while (stat.cookie == 0) {
-			if (unlikely(++i >= 10000)) {
-				assert(0);
-				break;
-			}
-			udelay(2);
-			barrier();
-			stat.cookie = le16_to_cpu(hw->cookie);
-		}
-		stat.flags = hw->flags;
-		stat.cnt1 = hw->cnt1;
-		stat.cnt2 = hw->cnt2;
-		stat.seq = le16_to_cpu(hw->seq);
-		stat.unknown = le16_to_cpu(hw->unknown);
-
-		bcm43xx_debugfs_log_txstat(ring->bcm, &stat);
-		bcm43xx_dma_handle_xmitstatus(ring->bcm, &stat);
-		/* recycle the descriptor buffer. */
-		sync_descbuffer_for_device(ring, meta->dmaaddr, ring->rx_buffersize);
-
-		return;
-	}
-	rxhdr = (struct bcm43xx_rxhdr *)skb->data;
-	len = le16_to_cpu(rxhdr->frame_length);
-	if (len == 0) {
-		int i = 0;
-
-		do {
-			udelay(2);
-			barrier();
-			len = le16_to_cpu(rxhdr->frame_length);
-		} while (len == 0 && i++ < 5);
-		if (unlikely(len == 0)) {
-			/* recycle the descriptor buffer. */
-			sync_descbuffer_for_device(ring, meta->dmaaddr,
-						   ring->rx_buffersize);
-			goto drop;
-		}
-	}
-	if (unlikely(len > ring->rx_buffersize)) {
-		/* The data did not fit into one descriptor buffer
-		 * and is split over multiple buffers.
-		 * This should never happen, as we try to allocate buffers
-		 * big enough. So simply ignore this packet.
-		 */
-		int cnt = 0;
-		s32 tmp = len;
-
-		while (1) {
-			desc = bcm43xx_dma_idx2desc(ring, *slot, &meta);
-			/* recycle the descriptor buffer. */
-			sync_descbuffer_for_device(ring, meta->dmaaddr,
-						   ring->rx_buffersize);
-			*slot = next_slot(ring, *slot);
-			cnt++;
-			tmp -= ring->rx_buffersize;
-			if (tmp <= 0)
-				break;
-		}
-		printkl(KERN_ERR PFX "DMA RX buffer too small "
-			"(len: %u, buffer: %u, nr-dropped: %d)\n",
-			len, ring->rx_buffersize, cnt);
-		goto drop;
-	}
-	len -= IEEE80211_FCS_LEN;
-
-	dmaaddr = meta->dmaaddr;
-	err = setup_rx_descbuffer(ring, desc, meta, GFP_ATOMIC);
-	if (unlikely(err)) {
-		dprintkl(KERN_ERR PFX "DMA RX: setup_rx_descbuffer() failed\n");
-		sync_descbuffer_for_device(ring, dmaaddr,
-					   ring->rx_buffersize);
-		goto drop;
-	}
-
-	unmap_descbuffer(ring, dmaaddr, ring->rx_buffersize, 0);
-	skb_put(skb, len + ring->frameoffset);
-	skb_pull(skb, ring->frameoffset);
-
-	err = bcm43xx_rx(ring->bcm, skb, rxhdr);
-	if (err) {
-		dev_kfree_skb_irq(skb);
-		goto drop;
-	}
-
-drop:
-	return;
-}
-
-void bcm43xx_dma_rx(struct bcm43xx_dmaring *ring)
-{
-	u32 status;
-	u16 descptr;
-	int slot, current_slot;
-#ifdef CONFIG_BCM43XX_DEBUG
-	int used_slots = 0;
-#endif
-
-	assert(!ring->tx);
-	if (ring->dma64) {
-		status = bcm43xx_dma_read(ring, BCM43xx_DMA64_RXSTATUS);
-		descptr = (status & BCM43xx_DMA64_RXSTATDPTR);
-		current_slot = descptr / sizeof(struct bcm43xx_dmadesc64);
-	} else {
-		status = bcm43xx_dma_read(ring, BCM43xx_DMA32_RXSTATUS);
-		descptr = (status & BCM43xx_DMA32_RXDPTR);
-		current_slot = descptr / sizeof(struct bcm43xx_dmadesc32);
-	}
-	assert(current_slot >= 0 && current_slot < ring->nr_slots);
-
-	slot = ring->current_slot;
-	for ( ; slot != current_slot; slot = next_slot(ring, slot)) {
-		dma_rx(ring, &slot);
-#ifdef CONFIG_BCM43XX_DEBUG
-		if (++used_slots > ring->max_used_slots)
-			ring->max_used_slots = used_slots;
-#endif
-	}
-	if (ring->dma64) {
-		bcm43xx_dma_write(ring, BCM43xx_DMA64_RXINDEX,
-				(u32)(slot * sizeof(struct bcm43xx_dmadesc64)));
-	} else {
-		bcm43xx_dma_write(ring, BCM43xx_DMA32_RXINDEX,
-				(u32)(slot * sizeof(struct bcm43xx_dmadesc32)));
-	}
-	ring->current_slot = slot;
-}
-
-void bcm43xx_dma_tx_suspend(struct bcm43xx_dmaring *ring)
-{
-	assert(ring->tx);
-	bcm43xx_power_saving_ctl_bits(ring->bcm, -1, 1);
-	if (ring->dma64) {
-		bcm43xx_dma_write(ring, BCM43xx_DMA64_TXCTL,
-				bcm43xx_dma_read(ring, BCM43xx_DMA64_TXCTL)
-				| BCM43xx_DMA64_TXSUSPEND);
-	} else {
-		bcm43xx_dma_write(ring, BCM43xx_DMA32_TXCTL,
-				bcm43xx_dma_read(ring, BCM43xx_DMA32_TXCTL)
-				| BCM43xx_DMA32_TXSUSPEND);
-	}
-}
-
-void bcm43xx_dma_tx_resume(struct bcm43xx_dmaring *ring)
-{
-	assert(ring->tx);
-	if (ring->dma64) {
-		bcm43xx_dma_write(ring, BCM43xx_DMA64_TXCTL,
-				bcm43xx_dma_read(ring, BCM43xx_DMA64_TXCTL)
-				& ~BCM43xx_DMA64_TXSUSPEND);
-	} else {
-		bcm43xx_dma_write(ring, BCM43xx_DMA32_TXCTL,
-				bcm43xx_dma_read(ring, BCM43xx_DMA32_TXCTL)
-				& ~BCM43xx_DMA32_TXSUSPEND);
-	}
-	bcm43xx_power_saving_ctl_bits(ring->bcm, -1, -1);
-}