4 files changed, 14 insertions, 4 deletions

diff --git a/drivers/net/davinci_cpdma.c b/drivers/net/davinci_cpdma.c
index e92b2b6cd8c4..ae47f23ba930 100644
--- a/drivers/net/davinci_cpdma.c
+++ b/drivers/net/davinci_cpdma.c
@@ -76,6 +76,7 @@ struct cpdma_desc {
 
 struct cpdma_desc_pool {
         u32                     phys;
+        u32                     hw_addr;
         void __iomem            *iomap;         /* ioremap map */
         void                    *cpumap;        /* dma_alloc map */
         int                     desc_size, mem_size;
@@ -137,7 +138,8 @@ struct cpdma_chan {
  * abstract out these details
  */
 static struct cpdma_desc_pool *
-cpdma_desc_pool_create(struct device *dev, u32 phys, int size, int align)
+cpdma_desc_pool_create(struct device *dev, u32 phys, u32 hw_addr,
+                                int size, int align)
 {
         int bitmap_size;
         struct cpdma_desc_pool *pool;
@@ -161,10 +163,12 @@ cpdma_desc_pool_create(struct device *dev, u32 phys, int size, int align)
         if (phys) {
                 pool->phys  = phys;
                 pool->iomap = ioremap(phys, size);
+                pool->hw_addr = hw_addr;
         } else {
                 pool->cpumap = dma_alloc_coherent(dev, size, &pool->phys,
                                                   GFP_KERNEL);
                 pool->iomap = (void __force __iomem *)pool->cpumap;
+                pool->hw_addr = pool->phys;
         }
 
         if (pool->iomap)
@@ -201,14 +205,14 @@ static inline dma_addr_t desc_phys(struct cpdma_desc_pool *pool,
 {
         if (!desc)
                 return 0;
-        return pool->phys + (__force dma_addr_t)desc -
+        return pool->hw_addr + (__force dma_addr_t)desc -
                             (__force dma_addr_t)pool->iomap;
 }
 
 static inline struct cpdma_desc __iomem *
 desc_from_phys(struct cpdma_desc_pool *pool, dma_addr_t dma)
 {
-        return dma ? pool->iomap + dma - pool->phys : NULL;
+        return dma ? pool->iomap + dma - pool->hw_addr : NULL;
 }
 
 static struct cpdma_desc __iomem *
@@ -260,6 +264,7 @@ struct cpdma_ctlr *cpdma_ctlr_create(struct cpdma_params *params)
 
         ctlr->pool = cpdma_desc_pool_create(ctlr->dev,
                                             ctlr->params.desc_mem_phys,
+                                            ctlr->params.desc_hw_addr,
                                             ctlr->params.desc_mem_size,
                                             ctlr->params.desc_align);
         if (!ctlr->pool) {
diff --git a/drivers/net/davinci_cpdma.h b/drivers/net/davinci_cpdma.h
index 868e50ebde45..afa19a0c0d81 100644
--- a/drivers/net/davinci_cpdma.h
+++ b/drivers/net/davinci_cpdma.h
@@ -33,6 +33,7 @@ struct cpdma_params {
         bool                    has_soft_reset;
         int                     min_packet_size;
         u32                     desc_mem_phys;
+        u32                     desc_hw_addr;
         int                     desc_mem_size;
         int                     desc_align;
 
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index 082d6ea69920..baca6bfcb089 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -1854,10 +1854,13 @@ static int __devinit davinci_emac_probe(struct platform_device *pdev)
         dma_params.rxcp                 = priv->emac_base + 0x660;
         dma_params.num_chan             = EMAC_MAX_TXRX_CHANNELS;
         dma_params.min_packet_size      = EMAC_DEF_MIN_ETHPKTSIZE;
-        dma_params.desc_mem_phys        = hw_ram_addr;
+        dma_params.desc_hw_addr         = hw_ram_addr;
         dma_params.desc_mem_size        = pdata->ctrl_ram_size;
         dma_params.desc_align           = 16;
 
+        dma_params.desc_mem_phys = pdata->no_bd_ram ? 0 :
+                        (u32 __force)res->start + pdata->ctrl_ram_offset;
+
         priv->dma = cpdma_ctlr_create(&dma_params);
         if (!priv->dma) {
                 dev_err(emac_dev, "DaVinci EMAC: Error initializing DMA\n");
diff --git a/include/linux/davinci_emac.h b/include/linux/davinci_emac.h
index 5dd428532f79..542888504994 100644
--- a/include/linux/davinci_emac.h
+++ b/include/linux/davinci_emac.h
@@ -36,6 +36,7 @@ struct emac_platform_data {
 
         u8 rmii_en;
         u8 version;
+        bool no_bd_ram;
         void (*interrupt_enable) (void);
         void (*interrupt_disable) (void);
 };