brcm47xx: prepare brcm47xx patches for sending to mainline.

SVN-Revision: 22296

2 files changed, 707 insertions, 61 deletions

diff --git a/target/linux/generic/patches-2.6.34/975-ssb_update.patch b/target/linux/generic/patches-2.6.34/975-ssb_update.patch
index 245cec18a9..6525a10306 100644
--- a/target/linux/generic/patches-2.6.34/975-ssb_update.patch
+++ b/target/linux/generic/patches-2.6.34/975-ssb_update.patch
@@ -1,15 +1,380 @@
+--- a/drivers/net/b44.c
++++ b/drivers/net/b44.c
+@@ -135,7 +135,6 @@ static void b44_init_rings(struct b44 *)
+ 
+ static void b44_init_hw(struct b44 *, int);
+ 
+-static int dma_desc_align_mask;
+ static int dma_desc_sync_size;
+ static int instance;
+ 
+@@ -150,9 +149,8 @@ static inline void b44_sync_dma_desc_for
+ 						unsigned long offset,
+ 						enum dma_data_direction dir)
+ {
+-	ssb_dma_sync_single_range_for_device(sdev, dma_base,
+-					     offset & dma_desc_align_mask,
+-					     dma_desc_sync_size, dir);
++	dma_sync_single_for_device(sdev->dma_dev, dma_base + offset,
++				   dma_desc_sync_size, dir);
+ }
+ 
+ static inline void b44_sync_dma_desc_for_cpu(struct ssb_device *sdev,
+@@ -160,9 +158,8 @@ static inline void b44_sync_dma_desc_for
+ 					     unsigned long offset,
+ 					     enum dma_data_direction dir)
+ {
+-	ssb_dma_sync_single_range_for_cpu(sdev, dma_base,
+-					  offset & dma_desc_align_mask,
+-					  dma_desc_sync_size, dir);
++	dma_sync_single_for_cpu(sdev->dma_dev, dma_base + offset,
++				dma_desc_sync_size, dir);
+ }
+ 
+ static inline unsigned long br32(const struct b44 *bp, unsigned long reg)
+@@ -608,10 +605,10 @@ static void b44_tx(struct b44 *bp)
+ 
+ 		BUG_ON(skb == NULL);
+ 
+-		ssb_dma_unmap_single(bp->sdev,
+-				     rp->mapping,
+-				     skb->len,
+-				     DMA_TO_DEVICE);
++		dma_unmap_single(bp->sdev->dma_dev,
++				 rp->mapping,
++				 skb->len,
++				 DMA_TO_DEVICE);
+ 		rp->skb = NULL;
+ 		dev_kfree_skb_irq(skb);
+ 	}
+@@ -648,29 +645,29 @@ static int b44_alloc_rx_skb(struct b44 *
+ 	if (skb == NULL)
+ 		return -ENOMEM;
+ 
+-	mapping = ssb_dma_map_single(bp->sdev, skb->data,
+-				     RX_PKT_BUF_SZ,
+-				     DMA_FROM_DEVICE);
++	mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
++				 RX_PKT_BUF_SZ,
++				 DMA_FROM_DEVICE);
+ 
+ 	/* Hardware bug work-around, the chip is unable to do PCI DMA
+ 	   to/from anything above 1GB :-( */
+-	if (ssb_dma_mapping_error(bp->sdev, mapping) ||
++	if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
+ 		mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
+ 		/* Sigh... */
+-		if (!ssb_dma_mapping_error(bp->sdev, mapping))
+-			ssb_dma_unmap_single(bp->sdev, mapping,
++		if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
++			dma_unmap_single(bp->sdev->dma_dev, mapping,
+ 					     RX_PKT_BUF_SZ, DMA_FROM_DEVICE);
+ 		dev_kfree_skb_any(skb);
+ 		skb = __netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ, GFP_ATOMIC|GFP_DMA);
+ 		if (skb == NULL)
+ 			return -ENOMEM;
+-		mapping = ssb_dma_map_single(bp->sdev, skb->data,
+-					     RX_PKT_BUF_SZ,
+-					     DMA_FROM_DEVICE);
+-		if (ssb_dma_mapping_error(bp->sdev, mapping) ||
+-			mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
+-			if (!ssb_dma_mapping_error(bp->sdev, mapping))
+-				ssb_dma_unmap_single(bp->sdev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE);
++		mapping = dma_map_single(bp->sdev->dma_dev, skb->data,
++					 RX_PKT_BUF_SZ,
++					 DMA_FROM_DEVICE);
++		if (dma_mapping_error(bp->sdev->dma_dev, mapping) ||
++		    mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
++			if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
++				dma_unmap_single(bp->sdev->dma_dev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE);
+ 			dev_kfree_skb_any(skb);
+ 			return -ENOMEM;
+ 		}
+@@ -745,9 +742,9 @@ static void b44_recycle_rx(struct b44 *b
+ 					     dest_idx * sizeof(*dest_desc),
+ 					     DMA_BIDIRECTIONAL);
+ 
+-	ssb_dma_sync_single_for_device(bp->sdev, dest_map->mapping,
+-				       RX_PKT_BUF_SZ,
+-				       DMA_FROM_DEVICE);
++	dma_sync_single_for_device(bp->sdev->dma_dev, dest_map->mapping,
++				   RX_PKT_BUF_SZ,
++				   DMA_FROM_DEVICE);
+ }
+ 
+ static int b44_rx(struct b44 *bp, int budget)
+@@ -767,9 +764,9 @@ static int b44_rx(struct b44 *bp, int bu
+ 		struct rx_header *rh;
+ 		u16 len;
+ 
+-		ssb_dma_sync_single_for_cpu(bp->sdev, map,
+-					    RX_PKT_BUF_SZ,
+-					    DMA_FROM_DEVICE);
++		dma_sync_single_for_cpu(bp->sdev->dma_dev, map,
++					RX_PKT_BUF_SZ,
++					DMA_FROM_DEVICE);
+ 		rh = (struct rx_header *) skb->data;
+ 		len = le16_to_cpu(rh->len);
+ 		if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) ||
+@@ -801,8 +798,8 @@ static int b44_rx(struct b44 *bp, int bu
+ 			skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod);
+ 			if (skb_size < 0)
+ 				goto drop_it;
+-			ssb_dma_unmap_single(bp->sdev, map,
+-					     skb_size, DMA_FROM_DEVICE);
++			dma_unmap_single(bp->sdev->dma_dev, map,
++					 skb_size, DMA_FROM_DEVICE);
+ 			/* Leave out rx_header */
+ 			skb_put(skb, len + RX_PKT_OFFSET);
+ 			skb_pull(skb, RX_PKT_OFFSET);
+@@ -954,24 +951,24 @@ static netdev_tx_t b44_start_xmit(struct
+ 		goto err_out;
+ 	}
+ 
+-	mapping = ssb_dma_map_single(bp->sdev, skb->data, len, DMA_TO_DEVICE);
+-	if (ssb_dma_mapping_error(bp->sdev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
++	mapping = dma_map_single(bp->sdev->dma_dev, skb->data, len, DMA_TO_DEVICE);
++	if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
+ 		struct sk_buff *bounce_skb;
+ 
+ 		/* Chip can't handle DMA to/from >1GB, use bounce buffer */
+-		if (!ssb_dma_mapping_error(bp->sdev, mapping))
+-			ssb_dma_unmap_single(bp->sdev, mapping, len,
++		if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
++			dma_unmap_single(bp->sdev->dma_dev, mapping, len,
+ 					     DMA_TO_DEVICE);
+ 
+ 		bounce_skb = __netdev_alloc_skb(dev, len, GFP_ATOMIC | GFP_DMA);
+ 		if (!bounce_skb)
+ 			goto err_out;
+ 
+-		mapping = ssb_dma_map_single(bp->sdev, bounce_skb->data,
+-					     len, DMA_TO_DEVICE);
+-		if (ssb_dma_mapping_error(bp->sdev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
+-			if (!ssb_dma_mapping_error(bp->sdev, mapping))
+-				ssb_dma_unmap_single(bp->sdev, mapping,
++		mapping = dma_map_single(bp->sdev->dma_dev, bounce_skb->data,
++					 len, DMA_TO_DEVICE);
++		if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
++			if (!dma_mapping_error(bp->sdev->dma_dev, mapping))
++				dma_unmap_single(bp->sdev->dma_dev, mapping,
+ 						     len, DMA_TO_DEVICE);
+ 			dev_kfree_skb_any(bounce_skb);
+ 			goto err_out;
+@@ -1014,8 +1011,6 @@ static netdev_tx_t b44_start_xmit(struct
+ 	if (TX_BUFFS_AVAIL(bp) < 1)
+ 		netif_stop_queue(dev);
+ 
+-	dev->trans_start = jiffies;
+-
+ out_unlock:
+ 	spin_unlock_irqrestore(&bp->lock, flags);
+ 
+@@ -1070,8 +1065,8 @@ static void b44_free_rings(struct b44 *b
+ 
+ 		if (rp->skb == NULL)
+ 			continue;
+-		ssb_dma_unmap_single(bp->sdev, rp->mapping, RX_PKT_BUF_SZ,
+-				     DMA_FROM_DEVICE);
++		dma_unmap_single(bp->sdev->dma_dev, rp->mapping, RX_PKT_BUF_SZ,
++				 DMA_FROM_DEVICE);
+ 		dev_kfree_skb_any(rp->skb);
+ 		rp->skb = NULL;
+ 	}
+@@ -1082,8 +1077,8 @@ static void b44_free_rings(struct b44 *b
+ 
+ 		if (rp->skb == NULL)
+ 			continue;
+-		ssb_dma_unmap_single(bp->sdev, rp->mapping, rp->skb->len,
+-				     DMA_TO_DEVICE);
++		dma_unmap_single(bp->sdev->dma_dev, rp->mapping, rp->skb->len,
++				 DMA_TO_DEVICE);
+ 		dev_kfree_skb_any(rp->skb);
+ 		rp->skb = NULL;
+ 	}
+@@ -1105,14 +1100,12 @@ static void b44_init_rings(struct b44 *b
+ 	memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
+ 
+ 	if (bp->flags & B44_FLAG_RX_RING_HACK)
+-		ssb_dma_sync_single_for_device(bp->sdev, bp->rx_ring_dma,
+-					       DMA_TABLE_BYTES,
+-					       DMA_BIDIRECTIONAL);
++		dma_sync_single_for_device(bp->sdev->dma_dev, bp->rx_ring_dma,
++					   DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
+ 
+ 	if (bp->flags & B44_FLAG_TX_RING_HACK)
+-		ssb_dma_sync_single_for_device(bp->sdev, bp->tx_ring_dma,
+-					       DMA_TABLE_BYTES,
+-					       DMA_TO_DEVICE);
++		dma_sync_single_for_device(bp->sdev->dma_dev, bp->tx_ring_dma,
++					   DMA_TABLE_BYTES, DMA_TO_DEVICE);
+ 
+ 	for (i = 0; i < bp->rx_pending; i++) {
+ 		if (b44_alloc_rx_skb(bp, -1, i) < 0)
+@@ -1132,27 +1125,23 @@ static void b44_free_consistent(struct b
+ 	bp->tx_buffers = NULL;
+ 	if (bp->rx_ring) {
+ 		if (bp->flags & B44_FLAG_RX_RING_HACK) {
+-			ssb_dma_unmap_single(bp->sdev, bp->rx_ring_dma,
+-					     DMA_TABLE_BYTES,
+-					     DMA_BIDIRECTIONAL);
++			dma_unmap_single(bp->sdev->dma_dev, bp->rx_ring_dma,
++					 DMA_TABLE_BYTES, DMA_BIDIRECTIONAL);
+ 			kfree(bp->rx_ring);
+ 		} else
+-			ssb_dma_free_consistent(bp->sdev, DMA_TABLE_BYTES,
+-						bp->rx_ring, bp->rx_ring_dma,
+-						GFP_KERNEL);
++			dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
++					  bp->rx_ring, bp->rx_ring_dma);
+ 		bp->rx_ring = NULL;
+ 		bp->flags &= ~B44_FLAG_RX_RING_HACK;
+ 	}
+ 	if (bp->tx_ring) {
+ 		if (bp->flags & B44_FLAG_TX_RING_HACK) {
+-			ssb_dma_unmap_single(bp->sdev, bp->tx_ring_dma,
+-					     DMA_TABLE_BYTES,
+-					     DMA_TO_DEVICE);
++			dma_unmap_single(bp->sdev->dma_dev, bp->tx_ring_dma,
++					 DMA_TABLE_BYTES, DMA_TO_DEVICE);
+ 			kfree(bp->tx_ring);
+ 		} else
+-			ssb_dma_free_consistent(bp->sdev, DMA_TABLE_BYTES,
+-						bp->tx_ring, bp->tx_ring_dma,
+-						GFP_KERNEL);
++			dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES,
++					  bp->tx_ring, bp->tx_ring_dma);
+ 		bp->tx_ring = NULL;
+ 		bp->flags &= ~B44_FLAG_TX_RING_HACK;
+ 	}
+@@ -1177,7 +1166,8 @@ static int b44_alloc_consistent(struct b
+ 		goto out_err;
+ 
+ 	size = DMA_TABLE_BYTES;
+-	bp->rx_ring = ssb_dma_alloc_consistent(bp->sdev, size, &bp->rx_ring_dma, gfp);
++	bp->rx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
++					 &bp->rx_ring_dma, gfp);
+ 	if (!bp->rx_ring) {
+ 		/* Allocation may have failed due to pci_alloc_consistent
+ 		   insisting on use of GFP_DMA, which is more restrictive
+@@ -1189,11 +1179,11 @@ static int b44_alloc_consistent(struct b
+ 		if (!rx_ring)
+ 			goto out_err;
+ 
+-		rx_ring_dma = ssb_dma_map_single(bp->sdev, rx_ring,
+-						 DMA_TABLE_BYTES,
+-						 DMA_BIDIRECTIONAL);
++		rx_ring_dma = dma_map_single(bp->sdev->dma_dev, rx_ring,
++					     DMA_TABLE_BYTES,
++					     DMA_BIDIRECTIONAL);
+ 
+-		if (ssb_dma_mapping_error(bp->sdev, rx_ring_dma) ||
++		if (dma_mapping_error(bp->sdev->dma_dev, rx_ring_dma) ||
+ 			rx_ring_dma + size > DMA_BIT_MASK(30)) {
+ 			kfree(rx_ring);
+ 			goto out_err;
+@@ -1204,7 +1194,8 @@ static int b44_alloc_consistent(struct b
+ 		bp->flags |= B44_FLAG_RX_RING_HACK;
+ 	}
+ 
+-	bp->tx_ring = ssb_dma_alloc_consistent(bp->sdev, size, &bp->tx_ring_dma, gfp);
++	bp->tx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size,
++					 &bp->tx_ring_dma, gfp);
+ 	if (!bp->tx_ring) {
+ 		/* Allocation may have failed due to ssb_dma_alloc_consistent
+ 		   insisting on use of GFP_DMA, which is more restrictive
+@@ -1216,11 +1207,11 @@ static int b44_alloc_consistent(struct b
+ 		if (!tx_ring)
+ 			goto out_err;
+ 
+-		tx_ring_dma = ssb_dma_map_single(bp->sdev, tx_ring,
+-			                    DMA_TABLE_BYTES,
+-			                    DMA_TO_DEVICE);
++		tx_ring_dma = dma_map_single(bp->sdev->dma_dev, tx_ring,
++					     DMA_TABLE_BYTES,
++					     DMA_TO_DEVICE);
+ 
+-		if (ssb_dma_mapping_error(bp->sdev, tx_ring_dma) ||
++		if (dma_mapping_error(bp->sdev->dma_dev, tx_ring_dma) ||
+ 			tx_ring_dma + size > DMA_BIT_MASK(30)) {
+ 			kfree(tx_ring);
+ 			goto out_err;
+@@ -2178,12 +2169,14 @@ static int __devinit b44_init_one(struct
+ 			"Failed to powerup the bus\n");
+ 		goto err_out_free_dev;
+ 	}
+-	err = ssb_dma_set_mask(sdev, DMA_BIT_MASK(30));
+-	if (err) {
++
++	if (dma_set_mask(sdev->dma_dev, DMA_BIT_MASK(30)) ||
++	    dma_set_coherent_mask(sdev->dma_dev, DMA_BIT_MASK(30))) {
+ 		dev_err(sdev->dev,
+ 			"Required 30BIT DMA mask unsupported by the system\n");
+ 		goto err_out_powerdown;
+ 	}
++
+ 	err = b44_get_invariants(bp);
+ 	if (err) {
+ 		dev_err(sdev->dev,
+@@ -2346,7 +2339,6 @@ static int __init b44_init(void)
+ 	int err;
+ 
+ 	/* Setup paramaters for syncing RX/TX DMA descriptors */
+-	dma_desc_align_mask = ~(dma_desc_align_size - 1);
+ 	dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc));
+ 
+ 	err = b44_pci_init();
 --- a/drivers/ssb/driver_chipcommon.c
 +++ b/drivers/ssb/driver_chipcommon.c
-@@ -233,6 +233,8 @@ void ssb_chipcommon_init(struct ssb_chip
+@@ -209,6 +209,24 @@ static void chipco_powercontrol_init(str
+ 	}
+ }
+ 
++/* http://bcm-v4.sipsolutions.net/802.11/PmuFastPwrupDelay */
++static u16 pmu_fast_powerup_delay(struct ssb_chipcommon *cc)
++{
++	struct ssb_bus *bus = cc->dev->bus;
++
++	switch (bus->chip_id) {
++	case 0x4312:
++	case 0x4322:
++	case 0x4328:
++		return 7000;
++	case 0x4325:
++		/* TODO: */
++	default:
++		return 15000;
++	}
++}
++
++/* http://bcm-v4.sipsolutions.net/802.11/ClkctlFastPwrupDelay */
+ static void calc_fast_powerup_delay(struct ssb_chipcommon *cc)
+ {
+ 	struct ssb_bus *bus = cc->dev->bus;
+@@ -218,6 +236,12 @@ static void calc_fast_powerup_delay(stru
+ 
+ 	if (bus->bustype != SSB_BUSTYPE_PCI)
+ 		return;
++
++	if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
++		cc->fast_pwrup_delay = pmu_fast_powerup_delay(cc);
++		return;
++	}
++
+ 	if (!(cc->capabilities & SSB_CHIPCO_CAP_PCTL))
+ 		return;
+ 
+@@ -233,6 +257,9 @@ void ssb_chipcommon_init(struct ssb_chip
  {
  	if (!cc->dev)
  		return; /* We don't have a ChipCommon */
 +	if (cc->dev->id.revision >= 11)
 +		cc->status = chipco_read32(cc, SSB_CHIPCO_CHIPSTAT);
++	ssb_dprintk(KERN_INFO PFX "chipcommon status is 0x%x\n", cc->status);
  	ssb_pmu_init(cc);
  	chipco_powercontrol_init(cc);
  	ssb_chipco_set_clockmode(cc, SSB_CLKMODE_FAST);
-@@ -370,6 +372,7 @@ u32 ssb_chipco_gpio_control(struct ssb_c
+@@ -370,6 +397,7 @@ u32 ssb_chipco_gpio_control(struct ssb_c
  {
  	return chipco_write32_masked(cc, SSB_CHIPCO_GPIOCTL, mask, value);
  }
@@ -17,9 +382,66 @@
  
  u32 ssb_chipco_gpio_intmask(struct ssb_chipcommon *cc, u32 mask, u32 value)
  {
+--- a/drivers/ssb/driver_chipcommon_pmu.c
++++ b/drivers/ssb/driver_chipcommon_pmu.c
+@@ -502,9 +502,9 @@ static void ssb_pmu_resources_init(struc
+ 		chipco_write32(cc, SSB_CHIPCO_PMU_MAXRES_MSK, max_msk);
+ }
+ 
++/* http://bcm-v4.sipsolutions.net/802.11/SSB/PmuInit */
+ void ssb_pmu_init(struct ssb_chipcommon *cc)
+ {
+-	struct ssb_bus *bus = cc->dev->bus;
+ 	u32 pmucap;
+ 
+ 	if (!(cc->capabilities & SSB_CHIPCO_CAP_PMU))
+@@ -516,15 +516,12 @@ void ssb_pmu_init(struct ssb_chipcommon 
+ 	ssb_dprintk(KERN_DEBUG PFX "Found rev %u PMU (capabilities 0x%08X)\n",
+ 		    cc->pmu.rev, pmucap);
+ 
+-	if (cc->pmu.rev >= 1) {
+-		if ((bus->chip_id == 0x4325) && (bus->chip_rev < 2)) {
+-			chipco_mask32(cc, SSB_CHIPCO_PMU_CTL,
+-				      ~SSB_CHIPCO_PMU_CTL_NOILPONW);
+-		} else {
+-			chipco_set32(cc, SSB_CHIPCO_PMU_CTL,
+-				     SSB_CHIPCO_PMU_CTL_NOILPONW);
+-		}
+-	}
++	if (cc->pmu.rev == 1)
++		chipco_mask32(cc, SSB_CHIPCO_PMU_CTL,
++			      ~SSB_CHIPCO_PMU_CTL_NOILPONW);
++	else
++		chipco_set32(cc, SSB_CHIPCO_PMU_CTL,
++			     SSB_CHIPCO_PMU_CTL_NOILPONW);
+ 	ssb_pmu_pll_init(cc);
+ 	ssb_pmu_resources_init(cc);
+ }
 --- a/drivers/ssb/main.c
 +++ b/drivers/ssb/main.c
-@@ -834,6 +834,9 @@ int ssb_bus_pcibus_register(struct ssb_b
+@@ -486,11 +486,12 @@ static int ssb_devices_register(struct s
+ #ifdef CONFIG_SSB_PCIHOST
+ 			sdev->irq = bus->host_pci->irq;
+ 			dev->parent = &bus->host_pci->dev;
++			sdev->dma_dev = dev->parent;
+ #endif
+ 			break;
+ 		case SSB_BUSTYPE_PCMCIA:
+ #ifdef CONFIG_SSB_PCMCIAHOST
+-			sdev->irq = bus->host_pcmcia->irq.AssignedIRQ;
++			sdev->irq = bus->host_pcmcia->irq;
+ 			dev->parent = &bus->host_pcmcia->dev;
+ #endif
+ 			break;
+@@ -501,6 +502,7 @@ static int ssb_devices_register(struct s
+ 			break;
+ 		case SSB_BUSTYPE_SSB:
+ 			dev->dma_mask = &dev->coherent_dma_mask;
++			sdev->dma_dev = dev;
+ 			break;
+ 		}
+ 
+@@ -834,6 +836,9 @@ int ssb_bus_pcibus_register(struct ssb_b
  	if (!err) {
  		ssb_printk(KERN_INFO PFX "Sonics Silicon Backplane found on "
  			   "PCI device %s\n", dev_name(&host_pci->dev));
@@ -29,6 +451,87 @@
  	}
  
  	return err;
+@@ -1223,80 +1228,6 @@ u32 ssb_dma_translation(struct ssb_devic
+ }
+ EXPORT_SYMBOL(ssb_dma_translation);
+ 
+-int ssb_dma_set_mask(struct ssb_device *dev, u64 mask)
+-{
+-#ifdef CONFIG_SSB_PCIHOST
+-	int err;
+-#endif
+-
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		err = pci_set_dma_mask(dev->bus->host_pci, mask);
+-		if (err)
+-			return err;
+-		err = pci_set_consistent_dma_mask(dev->bus->host_pci, mask);
+-		return err;
+-#endif
+-	case SSB_BUSTYPE_SSB:
+-		return dma_set_mask(dev->dev, mask);
+-	default:
+-		__ssb_dma_not_implemented(dev);
+-	}
+-	return -ENOSYS;
+-}
+-EXPORT_SYMBOL(ssb_dma_set_mask);
+-
+-void * ssb_dma_alloc_consistent(struct ssb_device *dev, size_t size,
+-				dma_addr_t *dma_handle, gfp_t gfp_flags)
+-{
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		if (gfp_flags & GFP_DMA) {
+-			/* Workaround: The PCI API does not support passing
+-			 * a GFP flag. */
+-			return dma_alloc_coherent(&dev->bus->host_pci->dev,
+-						  size, dma_handle, gfp_flags);
+-		}
+-		return pci_alloc_consistent(dev->bus->host_pci, size, dma_handle);
+-#endif
+-	case SSB_BUSTYPE_SSB:
+-		return dma_alloc_coherent(dev->dev, size, dma_handle, gfp_flags);
+-	default:
+-		__ssb_dma_not_implemented(dev);
+-	}
+-	return NULL;
+-}
+-EXPORT_SYMBOL(ssb_dma_alloc_consistent);
+-
+-void ssb_dma_free_consistent(struct ssb_device *dev, size_t size,
+-			     void *vaddr, dma_addr_t dma_handle,
+-			     gfp_t gfp_flags)
+-{
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		if (gfp_flags & GFP_DMA) {
+-			/* Workaround: The PCI API does not support passing
+-			 * a GFP flag. */
+-			dma_free_coherent(&dev->bus->host_pci->dev,
+-					  size, vaddr, dma_handle);
+-			return;
+-		}
+-		pci_free_consistent(dev->bus->host_pci, size,
+-				    vaddr, dma_handle);
+-		return;
+-#endif
+-	case SSB_BUSTYPE_SSB:
+-		dma_free_coherent(dev->dev, size, vaddr, dma_handle);
+-		return;
+-	default:
+-		__ssb_dma_not_implemented(dev);
+-	}
+-}
+-EXPORT_SYMBOL(ssb_dma_free_consistent);
+-
+ int ssb_bus_may_powerdown(struct ssb_bus *bus)
+ {
+ 	struct ssb_chipcommon *cc;
 --- a/drivers/ssb/pci.c
 +++ b/drivers/ssb/pci.c
 @@ -168,7 +168,7 @@ err_pci:
@@ -40,7 +543,7 @@
  /* Helper to extract some _offset, which is one of the SSB_SPROM_XXX defines. */
  #define SPEX16(_outvar, _offset, _mask, _shift)	\
  	out->_outvar = ((in[SPOFF(_offset)] & (_mask)) >> (_shift))
-@@ -254,7 +254,7 @@ static int sprom_do_read(struct ssb_bus
+@@ -254,7 +254,7 @@ static int sprom_do_read(struct ssb_bus 
  	int i;
  
  	for (i = 0; i < bus->sprom_size; i++)
@@ -58,7 +561,7 @@
  		mmiowb();
  		msleep(20);
  	}
-@@ -621,6 +621,14 @@ static int ssb_pci_sprom_get(struct ssb_
+@@ -621,6 +621,28 @@ static int ssb_pci_sprom_get(struct ssb_
  	int err = -ENOMEM;
  	u16 *buf;
  
@@ -66,16 +569,30 @@
 +		ssb_printk(KERN_ERR PFX "No SPROM available!\n");
 +		return -ENODEV;
 +	}
-+
-+	bus->sprom_offset = (bus->chipco.dev->id.revision < 31) ?
-+		SSB_SPROM_BASE1 : SSB_SPROM_BASE31;
++	if (bus->chipco.dev) {	/* can be unavailible! */
++		/*
++		 * get SPROM offset: SSB_SPROM_BASE1 except for
++		 * chipcommon rev >= 31 or chip ID is 0x4312 and
++		 * chipcommon status & 3 == 2
++		 */
++		if (bus->chipco.dev->id.revision >= 31)
++			bus->sprom_offset = SSB_SPROM_BASE31;
++		else if (bus->chip_id == 0x4312 &&
++			 (bus->chipco.status & 0x03) == 2)
++			bus->sprom_offset = SSB_SPROM_BASE31;
++		else
++			bus->sprom_offset = SSB_SPROM_BASE1;
++	} else {
++		bus->sprom_offset = SSB_SPROM_BASE1;
++	}
++	ssb_dprintk(KERN_INFO PFX "SPROM offset is 0x%x\n", bus->sprom_offset);
 +
  	buf = kcalloc(SSB_SPROMSIZE_WORDS_R123, sizeof(u16), GFP_KERNEL);
  	if (!buf)
  		goto out;
 --- a/drivers/ssb/sprom.c
 +++ b/drivers/ssb/sprom.c
-@@ -176,3 +176,17 @@ const struct ssb_sprom *ssb_get_fallback
+@@ -176,3 +176,18 @@ const struct ssb_sprom *ssb_get_fallback
  {
  	return fallback_sprom;
  }
@@ -88,6 +605,7 @@
 +	/* this routine differs from specs as we do not access SPROM directly
 +	   on PCMCIA */
 +	if (bus->bustype == SSB_BUSTYPE_PCI &&
++	    bus->chipco.dev &&	/* can be unavailible! */
 +	    bus->chipco.dev->id.revision >= 31)
 +		return bus->chipco.capabilities & SSB_CHIPCO_CAP_SPROM;
 +
@@ -95,6 +613,15 @@
 +}
 --- a/include/linux/ssb/ssb.h
 +++ b/include/linux/ssb/ssb.h
+@@ -167,7 +167,7 @@ struct ssb_device {
+ 	 * is an optimization. */
+ 	const struct ssb_bus_ops *ops;
+ 
+-	struct device *dev;
++	struct device *dev, *dma_dev;
+ 
+ 	struct ssb_bus *bus;
+ 	struct ssb_device_id id;
 @@ -305,6 +305,7 @@ struct ssb_bus {
  	/* ID information about the Chip. */
  	u16 chip_id;
@@ -113,6 +640,177 @@
  /* Set a fallback SPROM.
   * See kdoc at the function definition for complete documentation. */
  extern int ssb_arch_set_fallback_sprom(const struct ssb_sprom *sprom);
+@@ -466,14 +470,6 @@ extern u32 ssb_dma_translation(struct ss
+ #define SSB_DMA_TRANSLATION_MASK	0xC0000000
+ #define SSB_DMA_TRANSLATION_SHIFT	30
+ 
+-extern int ssb_dma_set_mask(struct ssb_device *dev, u64 mask);
+-
+-extern void * ssb_dma_alloc_consistent(struct ssb_device *dev, size_t size,
+-				       dma_addr_t *dma_handle, gfp_t gfp_flags);
+-extern void ssb_dma_free_consistent(struct ssb_device *dev, size_t size,
+-				    void *vaddr, dma_addr_t dma_handle,
+-				    gfp_t gfp_flags);
+-
+ static inline void __cold __ssb_dma_not_implemented(struct ssb_device *dev)
+ {
+ #ifdef CONFIG_SSB_DEBUG
+@@ -482,155 +478,6 @@ static inline void __cold __ssb_dma_not_
+ #endif /* DEBUG */
+ }
+ 
+-static inline int ssb_dma_mapping_error(struct ssb_device *dev, dma_addr_t addr)
+-{
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		return pci_dma_mapping_error(dev->bus->host_pci, addr);
+-#endif
+-		break;
+-	case SSB_BUSTYPE_SSB:
+-		return dma_mapping_error(dev->dev, addr);
+-	default:
+-		break;
+-	}
+-	__ssb_dma_not_implemented(dev);
+-	return -ENOSYS;
+-}
+-
+-static inline dma_addr_t ssb_dma_map_single(struct ssb_device *dev, void *p,
+-					    size_t size, enum dma_data_direction dir)
+-{
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		return pci_map_single(dev->bus->host_pci, p, size, dir);
+-#endif
+-		break;
+-	case SSB_BUSTYPE_SSB:
+-		return dma_map_single(dev->dev, p, size, dir);
+-	default:
+-		break;
+-	}
+-	__ssb_dma_not_implemented(dev);
+-	return 0;
+-}
+-
+-static inline void ssb_dma_unmap_single(struct ssb_device *dev, dma_addr_t dma_addr,
+-					size_t size, enum dma_data_direction dir)
+-{
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		pci_unmap_single(dev->bus->host_pci, dma_addr, size, dir);
+-		return;
+-#endif
+-		break;
+-	case SSB_BUSTYPE_SSB:
+-		dma_unmap_single(dev->dev, dma_addr, size, dir);
+-		return;
+-	default:
+-		break;
+-	}
+-	__ssb_dma_not_implemented(dev);
+-}
+-
+-static inline void ssb_dma_sync_single_for_cpu(struct ssb_device *dev,
+-					       dma_addr_t dma_addr,
+-					       size_t size,
+-					       enum dma_data_direction dir)
+-{
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		pci_dma_sync_single_for_cpu(dev->bus->host_pci, dma_addr,
+-					    size, dir);
+-		return;
+-#endif
+-		break;
+-	case SSB_BUSTYPE_SSB:
+-		dma_sync_single_for_cpu(dev->dev, dma_addr, size, dir);
+-		return;
+-	default:
+-		break;
+-	}
+-	__ssb_dma_not_implemented(dev);
+-}
+-
+-static inline void ssb_dma_sync_single_for_device(struct ssb_device *dev,
+-						  dma_addr_t dma_addr,
+-						  size_t size,
+-						  enum dma_data_direction dir)
+-{
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		pci_dma_sync_single_for_device(dev->bus->host_pci, dma_addr,
+-					       size, dir);
+-		return;
+-#endif
+-		break;
+-	case SSB_BUSTYPE_SSB:
+-		dma_sync_single_for_device(dev->dev, dma_addr, size, dir);
+-		return;
+-	default:
+-		break;
+-	}
+-	__ssb_dma_not_implemented(dev);
+-}
+-
+-static inline void ssb_dma_sync_single_range_for_cpu(struct ssb_device *dev,
+-						     dma_addr_t dma_addr,
+-						     unsigned long offset,
+-						     size_t size,
+-						     enum dma_data_direction dir)
+-{
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		/* Just sync everything. That's all the PCI API can do. */
+-		pci_dma_sync_single_for_cpu(dev->bus->host_pci, dma_addr,
+-					    offset + size, dir);
+-		return;
+-#endif
+-		break;
+-	case SSB_BUSTYPE_SSB:
+-		dma_sync_single_range_for_cpu(dev->dev, dma_addr, offset,
+-					      size, dir);
+-		return;
+-	default:
+-		break;
+-	}
+-	__ssb_dma_not_implemented(dev);
+-}
+-
+-static inline void ssb_dma_sync_single_range_for_device(struct ssb_device *dev,
+-							dma_addr_t dma_addr,
+-							unsigned long offset,
+-							size_t size,
+-							enum dma_data_direction dir)
+-{
+-	switch (dev->bus->bustype) {
+-	case SSB_BUSTYPE_PCI:
+-#ifdef CONFIG_SSB_PCIHOST
+-		/* Just sync everything. That's all the PCI API can do. */
+-		pci_dma_sync_single_for_device(dev->bus->host_pci, dma_addr,
+-					       offset + size, dir);
+-		return;
+-#endif
+-		break;
+-	case SSB_BUSTYPE_SSB:
+-		dma_sync_single_range_for_device(dev->dev, dma_addr, offset,
+-						 size, dir);
+-		return;
+-	default:
+-		break;
+-	}
+-	__ssb_dma_not_implemented(dev);
+-}
+-
+-
+ #ifdef CONFIG_SSB_PCIHOST
+ /* PCI-host wrapper driver */
+ extern int ssb_pcihost_register(struct pci_driver *driver);
 --- a/include/linux/ssb/ssb_driver_chipcommon.h
 +++ b/include/linux/ssb/ssb_driver_chipcommon.h
 @@ -53,6 +53,7 @@
diff --git a/target/linux/generic/patches-2.6.34/976-ssb_add_dma_dev.patch b/target/linux/generic/patches-2.6.34/976-ssb_add_dma_dev.patch
deleted file mode 100644
index fd463b4a75..0000000000
--- a/target/linux/generic/patches-2.6.34/976-ssb_add_dma_dev.patch
+++ /dev/null
@@ -1,52 +0,0 @@
-From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
-
-Add dma_dev, a pointer to struct device, to struct ssb_device.  We pass it
-to the generic DMA API with SSB_BUSTYPE_PCI and SSB_BUSTYPE_SSB. 
-ssb_devices_register() sets up it properly.
-
-This is preparation for replacing the ssb bus specific DMA API (ssb_dma_*)
-with the generic DMA API.
-
-Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
-Acked-by: Michael Buesch <mb@bu3sch.de>
-Cc: Gary Zambrano <zambrano@broadcom.com>
-Cc: Stefano Brivio <stefano.brivio@polimi.it>
-Cc: Larry Finger <Larry.Finger@lwfinger.net>
-Cc: John W. Linville <linville@tuxdriver.com>
-Acked-by: David S. Miller <davem@davemloft.net>
-Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
----
-
- drivers/ssb/main.c      |    2 ++
- include/linux/ssb/ssb.h |    2 +-
- 2 files changed, 3 insertions(+), 1 deletion(-)
-
---- a/drivers/ssb/main.c
-+++ b/drivers/ssb/main.c
-@@ -486,6 +486,7 @@ static int ssb_devices_register(struct s
- #ifdef CONFIG_SSB_PCIHOST
- 			sdev->irq = bus->host_pci->irq;
- 			dev->parent = &bus->host_pci->dev;
-+			sdev->dma_dev = dev->parent;
- #endif
- 			break;
- 		case SSB_BUSTYPE_PCMCIA:
-@@ -501,6 +502,7 @@ static int ssb_devices_register(struct s
- 			break;
- 		case SSB_BUSTYPE_SSB:
- 			dev->dma_mask = &dev->coherent_dma_mask;
-+			sdev->dma_dev = dev;
- 			break;
- 		}
- 
---- a/include/linux/ssb/ssb.h
-+++ b/include/linux/ssb/ssb.h
-@@ -167,7 +167,7 @@ struct ssb_device {
- 	 * is an optimization. */
- 	const struct ssb_bus_ops *ops;
- 
--	struct device *dev;
-+	struct device *dev, *dma_dev;
- 
- 	struct ssb_bus *bus;
- 	struct ssb_device_id id;