IPoIB: Use the new verbs DMA mapping functions

Convert IPoIB to use the new DMA mapping functions
for kernel verbs consumers.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

2 files changed, 38 insertions, 41 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index 99547996aba2..07deee8f81ce 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -105,12 +105,12 @@ struct ipoib_mcast;
 
 struct ipoib_rx_buf {
         struct sk_buff *skb;
-        dma_addr_t      mapping;
+        u64             mapping;
 };
 
 struct ipoib_tx_buf {
         struct sk_buff *skb;
-        DECLARE_PCI_UNMAP_ADDR(mapping)
+        u64             mapping;
 };
 
 /*
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index f10fba5d3265..59d9594ed6d9 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -109,9 +109,8 @@ static int ipoib_ib_post_receive(struct net_device *dev, int id)
         ret = ib_post_recv(priv->qp, &param, &bad_wr);
         if (unlikely(ret)) {
                 ipoib_warn(priv, "receive failed for buf %d (%d)\n", id, ret);
-                dma_unmap_single(priv->ca->dma_device,
-                                 priv->rx_ring[id].mapping,
-                                 IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
+                ib_dma_unmap_single(priv->ca, priv->rx_ring[id].mapping,
+                                    IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
                 dev_kfree_skb_any(priv->rx_ring[id].skb);
                 priv->rx_ring[id].skb = NULL;
         }
@@ -123,7 +122,7 @@ static int ipoib_alloc_rx_skb(struct net_device *dev, int id)
 {
         struct ipoib_dev_priv *priv = netdev_priv(dev);
         struct sk_buff *skb;
-        dma_addr_t addr;
+        u64 addr;
 
         skb = dev_alloc_skb(IPOIB_BUF_SIZE + 4);
         if (!skb)
@@ -136,10 +135,9 @@ static int ipoib_alloc_rx_skb(struct net_device *dev, int id)
          */
         skb_reserve(skb, 4);
 
-        addr = dma_map_single(priv->ca->dma_device,
-                              skb->data, IPOIB_BUF_SIZE,
-                              DMA_FROM_DEVICE);
-        if (unlikely(dma_mapping_error(addr))) {
+        addr = ib_dma_map_single(priv->ca, skb->data, IPOIB_BUF_SIZE,
+                                 DMA_FROM_DEVICE);
+        if (unlikely(ib_dma_mapping_error(priv->ca, addr))) {
                 dev_kfree_skb_any(skb);
                 return -EIO;
         }
@@ -174,7 +172,7 @@ static void ipoib_ib_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
         struct ipoib_dev_priv *priv = netdev_priv(dev);
         unsigned int wr_id = wc->wr_id & ~IPOIB_OP_RECV;
         struct sk_buff *skb;
-        dma_addr_t addr;
+        u64 addr;
 
         ipoib_dbg_data(priv, "recv completion: id %d, op %d, status: %d\n",
                        wr_id, wc->opcode, wc->status);
@@ -193,8 +191,8 @@ static void ipoib_ib_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
                         ipoib_warn(priv, "failed recv event "
                                    "(status=%d, wrid=%d vend_err %x)\n",
                                    wc->status, wr_id, wc->vendor_err);
-                dma_unmap_single(priv->ca->dma_device, addr,
-                                 IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
+                ib_dma_unmap_single(priv->ca, addr,
+                                    IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
                 dev_kfree_skb_any(skb);
                 priv->rx_ring[wr_id].skb = NULL;
                 return;
@@ -212,8 +210,7 @@ static void ipoib_ib_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
         ipoib_dbg_data(priv, "received %d bytes, SLID 0x%04x\n",
                        wc->byte_len, wc->slid);
 
-        dma_unmap_single(priv->ca->dma_device, addr,
-                         IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
+        ib_dma_unmap_single(priv->ca, addr, IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
 
         skb_put(skb, wc->byte_len);
         skb_pull(skb, IB_GRH_BYTES);
@@ -261,10 +258,8 @@ static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 
         tx_req = &priv->tx_ring[wr_id];
 
-        dma_unmap_single(priv->ca->dma_device,
-                         pci_unmap_addr(tx_req, mapping),
-                         tx_req->skb->len,
-                         DMA_TO_DEVICE);
+        ib_dma_unmap_single(priv->ca, tx_req->mapping,
+                            tx_req->skb->len, DMA_TO_DEVICE);
 
         ++priv->stats.tx_packets;
         priv->stats.tx_bytes += tx_req->skb->len;
@@ -311,7 +306,7 @@ void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr)
 static inline int post_send(struct ipoib_dev_priv *priv,
                             unsigned int wr_id,
                             struct ib_ah *address, u32 qpn,
-                            dma_addr_t addr, int len)
+                            u64 addr, int len)
 {
         struct ib_send_wr *bad_wr;
 
@@ -330,7 +325,7 @@ void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 {
         struct ipoib_dev_priv *priv = netdev_priv(dev);
         struct ipoib_tx_buf *tx_req;
-        dma_addr_t addr;
+        u64 addr;
 
         if (unlikely(skb->len > dev->mtu + INFINIBAND_ALEN)) {
                 ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n",
@@ -353,21 +348,20 @@ void ipoib_send(struct net_device *dev, struct sk_buff *skb,
          */
         tx_req = &priv->tx_ring[priv->tx_head & (ipoib_sendq_size - 1)];
         tx_req->skb = skb;
-        addr = dma_map_single(priv->ca->dma_device, skb->data, skb->len,
-                              DMA_TO_DEVICE);
-        if (unlikely(dma_mapping_error(addr))) {
+        addr = ib_dma_map_single(priv->ca, skb->data, skb->len,
+                                 DMA_TO_DEVICE);
+        if (unlikely(ib_dma_mapping_error(priv->ca, addr))) {
                 ++priv->stats.tx_errors;
                 dev_kfree_skb_any(skb);
                 return;
         }
-        pci_unmap_addr_set(tx_req, mapping, addr);
+        tx_req->mapping = addr;
 
         if (unlikely(post_send(priv, priv->tx_head & (ipoib_sendq_size - 1),
                                address->ah, qpn, addr, skb->len))) {
                 ipoib_warn(priv, "post_send failed\n");
                 ++priv->stats.tx_errors;
-                dma_unmap_single(priv->ca->dma_device, addr, skb->len,
-                                 DMA_TO_DEVICE);
+                ib_dma_unmap_single(priv->ca, addr, skb->len, DMA_TO_DEVICE);
                 dev_kfree_skb_any(skb);
         } else {
                 dev->trans_start = jiffies;
@@ -538,24 +532,27 @@ int ipoib_ib_dev_stop(struct net_device *dev)
                         while ((int) priv->tx_tail - (int) priv->tx_head < 0) {
                                 tx_req = &priv->tx_ring[priv->tx_tail &
                                                         (ipoib_sendq_size - 1)];
-                                dma_unmap_single(priv->ca->dma_device,
-                                                 pci_unmap_addr(tx_req, mapping),
-                                                 tx_req->skb->len,
-                                                 DMA_TO_DEVICE);
+                                ib_dma_unmap_single(priv->ca,
+                                                    tx_req->mapping,
+                                                    tx_req->skb->len,
+                                                    DMA_TO_DEVICE);
                                 dev_kfree_skb_any(tx_req->skb);
                                 ++priv->tx_tail;
                         }
 
-                        for (i = 0; i < ipoib_recvq_size; ++i)
-                                if (priv->rx_ring[i].skb) {
-                                        dma_unmap_single(priv->ca->dma_device,
-                                                         pci_unmap_addr(&priv->rx_ring[i],
-                                                                        mapping),
-                                                         IPOIB_BUF_SIZE,
-                                                         DMA_FROM_DEVICE);
-                                        dev_kfree_skb_any(priv->rx_ring[i].skb);
-                                        priv->rx_ring[i].skb = NULL;
-                                }
+                        for (i = 0; i < ipoib_recvq_size; ++i) {
+                                struct ipoib_rx_buf *rx_req;
+
+                                rx_req = &priv->rx_ring[i];
+                                if (!rx_req->skb)
+                                        continue;
+                                ib_dma_unmap_single(priv->ca,
+                                                    rx_req->mapping,
+                                                    IPOIB_BUF_SIZE,
+                                                    DMA_FROM_DEVICE);
+                                dev_kfree_skb_any(rx_req->skb);
+                                rx_req->skb = NULL;
+                        }
 
                         goto timeout;
                 }