[PATCH] forcedeth: 64-bit DMA support

This is a multi-part message in MIME format.
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 161 insertions, 49 deletions

diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 746ad0178f8..4d38acbac4e 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -89,6 +89,7 @@
  *      0.37: 10 Jul 2005: Additional ethtool support, cleanup of pci id list
  *      0.38: 16 Jul 2005: tx irq rewrite: Use global flags instead of
  *                         per-packet flags.
+ *      0.39: 18 Jul 2005: Add 64bit descriptor support.
  *
  * Known bugs:
  * We suspect that on some hardware no TX done interrupts are generated.
@@ -100,7 +101,7 @@
  * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
  * superfluous timer interrupts from the nic.
  */
-#define FORCEDETH_VERSION               "0.38"
+#define FORCEDETH_VERSION               "0.39"
 #define DRV_NAME                        "forcedeth"
 
 #include <linux/module.h>
@@ -138,6 +139,7 @@
 #define DEV_NEED_TIMERIRQ       0x0001  /* set the timer irq flag in the irq mask */
 #define DEV_NEED_LINKTIMER      0x0002  /* poll link settings. Relies on the timer irq */
 #define DEV_HAS_LARGEDESC       0x0004  /* device supports jumbo frames and needs packet format 2 */
+#define DEV_HAS_HIGH_DMA        0x0008  /* device supports 64bit dma */
 
 enum {
         NvRegIrqStatus = 0x000,
@@ -291,6 +293,18 @@ struct ring_desc {
         u32 FlagLen;
 };
 
+struct ring_desc_ex {
+        u32 PacketBufferHigh;
+        u32 PacketBufferLow;
+        u32 Reserved;
+        u32 FlagLen;
+};
+
+typedef union _ring_type {
+        struct ring_desc* orig;
+        struct ring_desc_ex* ex;
+} ring_type;
+
 #define FLAG_MASK_V1 0xffff0000
 #define FLAG_MASK_V2 0xffffc000
 #define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
@@ -405,6 +419,7 @@ struct ring_desc {
  */
 #define DESC_VER_1      0x0
 #define DESC_VER_2      (0x02100|NVREG_TXRXCTL_RXCHECK)
+#define DESC_VER_3      (0x02200|NVREG_TXRXCTL_RXCHECK)
 
 /* PHY defines */
 #define PHY_OUI_MARVELL 0x5043
@@ -477,7 +492,7 @@ struct fe_priv {
         /* rx specific fields.
          * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
          */
-        struct ring_desc *rx_ring;
+        ring_type rx_ring;
         unsigned int cur_rx, refill_rx;
         struct sk_buff *rx_skbuff[RX_RING];
         dma_addr_t rx_dma[RX_RING];
@@ -494,7 +509,7 @@ struct fe_priv {
         /*
          * tx specific fields.
          */
-        struct ring_desc *tx_ring;
+        ring_type tx_ring;
         unsigned int next_tx, nic_tx;
         struct sk_buff *tx_skbuff[TX_RING];
         dma_addr_t tx_dma[TX_RING];
@@ -529,6 +544,11 @@ static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
                 & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
 }
 
+static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
+{
+        return le32_to_cpu(prd->FlagLen) & LEN_MASK_V2;
+}
+
 static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
                                 int delay, int delaymax, const char *msg)
 {
@@ -813,9 +833,16 @@ static int nv_alloc_rx(struct net_device *dev)
                 }
                 np->rx_dma[nr] = pci_map_single(np->pci_dev, skb->data, skb->len,
                                                 PCI_DMA_FROMDEVICE);
-                np->rx_ring[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]);
-                wmb();
-                np->rx_ring[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
+                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+                        np->rx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->rx_dma[nr]);
+                        wmb();
+                        np->rx_ring.orig[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
+                } else {
+                        np->rx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->rx_dma[nr]) >> 32;
+                        np->rx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->rx_dma[nr]) & 0x0FFFFFFFF;
+                        wmb();
+                        np->rx_ring.ex[nr].FlagLen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
+                }
                 dprintk(KERN_DEBUG "%s: nv_alloc_rx: Packet %d marked as Available\n",
                                         dev->name, refill_rx);
                 refill_rx++;
@@ -849,7 +876,10 @@ static void nv_init_rx(struct net_device *dev)
         np->cur_rx = RX_RING;
         np->refill_rx = 0;
         for (i = 0; i < RX_RING; i++)
-                np->rx_ring[i].FlagLen = 0;
+                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                        np->rx_ring.orig[i].FlagLen = 0;
+                else
+                        np->rx_ring.ex[i].FlagLen = 0;
 }
 
 static void nv_init_tx(struct net_device *dev)
@@ -859,7 +889,10 @@ static void nv_init_tx(struct net_device *dev)
 
         np->next_tx = np->nic_tx = 0;
         for (i = 0; i < TX_RING; i++)
-                np->tx_ring[i].FlagLen = 0;
+                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                        np->tx_ring.orig[i].FlagLen = 0;
+                else
+                        np->tx_ring.ex[i].FlagLen = 0;
 }
 
 static int nv_init_ring(struct net_device *dev)
@@ -874,7 +907,10 @@ static void nv_drain_tx(struct net_device *dev)
         struct fe_priv *np = get_nvpriv(dev);
         int i;
         for (i = 0; i < TX_RING; i++) {
-                np->tx_ring[i].FlagLen = 0;
+                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                        np->tx_ring.orig[i].FlagLen = 0;
+                else
+                        np->tx_ring.ex[i].FlagLen = 0;
                 if (np->tx_skbuff[i]) {
                         pci_unmap_single(np->pci_dev, np->tx_dma[i],
                                                 np->tx_skbuff[i]->len,
@@ -891,7 +927,10 @@ static void nv_drain_rx(struct net_device *dev)
         struct fe_priv *np = get_nvpriv(dev);
         int i;
         for (i = 0; i < RX_RING; i++) {
-                np->rx_ring[i].FlagLen = 0;
+                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                        np->rx_ring.orig[i].FlagLen = 0;
+                else
+                        np->rx_ring.ex[i].FlagLen = 0;
                 wmb();
                 if (np->rx_skbuff[i]) {
                         pci_unmap_single(np->pci_dev, np->rx_dma[i],
@@ -922,11 +961,19 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
         np->tx_dma[nr] = pci_map_single(np->pci_dev, skb->data,skb->len,
                                         PCI_DMA_TODEVICE);
 
-        np->tx_ring[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
+        if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                np->tx_ring.orig[nr].PacketBuffer = cpu_to_le32(np->tx_dma[nr]);
+        else {
+                np->tx_ring.ex[nr].PacketBufferHigh = cpu_to_le64(np->tx_dma[nr]) >> 32;
+                np->tx_ring.ex[nr].PacketBufferLow = cpu_to_le64(np->tx_dma[nr]) & 0x0FFFFFFFF;
+        }
 
         spin_lock_irq(&np->lock);
         wmb();
-        np->tx_ring[nr].FlagLen = cpu_to_le32( (skb->len-1) | np->tx_flags );
+        if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                np->tx_ring.orig[nr].FlagLen = cpu_to_le32( (skb->len-1) | np->tx_flags );
+        else
+                np->tx_ring.ex[nr].FlagLen = cpu_to_le32( (skb->len-1) | np->tx_flags );
         dprintk(KERN_DEBUG "%s: nv_start_xmit: packet packet %d queued for transmission.\n",
                                 dev->name, np->next_tx);
         {
@@ -964,7 +1011,10 @@ static void nv_tx_done(struct net_device *dev)
         while (np->nic_tx != np->next_tx) {
                 i = np->nic_tx % TX_RING;
 
-                Flags = le32_to_cpu(np->tx_ring[i].FlagLen);
+                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                        Flags = le32_to_cpu(np->tx_ring.orig[i].FlagLen);
+                else
+                        Flags = le32_to_cpu(np->tx_ring.ex[i].FlagLen);
 
                 dprintk(KERN_DEBUG "%s: nv_tx_done: looking at packet %d, Flags 0x%x.\n",
                                         dev->name, np->nic_tx, Flags);
@@ -1035,16 +1085,33 @@ static void nv_tx_timeout(struct net_device *dev)
                 }
                 printk(KERN_INFO "%s: Dumping tx ring\n", dev->name);
                 for (i=0;i<TX_RING;i+= 4) {
-                        printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
-                                        i, 
-                                        le32_to_cpu(np->tx_ring[i].PacketBuffer),
-                                        le32_to_cpu(np->tx_ring[i].FlagLen),
-                                        le32_to_cpu(np->tx_ring[i+1].PacketBuffer),
-                                        le32_to_cpu(np->tx_ring[i+1].FlagLen),
-                                        le32_to_cpu(np->tx_ring[i+2].PacketBuffer),
-                                        le32_to_cpu(np->tx_ring[i+2].FlagLen),
-                                        le32_to_cpu(np->tx_ring[i+3].PacketBuffer),
-                                        le32_to_cpu(np->tx_ring[i+3].FlagLen));
+                        if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+                                printk(KERN_INFO "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
+                                       i, 
+                                       le32_to_cpu(np->tx_ring.orig[i].PacketBuffer),
+                                       le32_to_cpu(np->tx_ring.orig[i].FlagLen),
+                                       le32_to_cpu(np->tx_ring.orig[i+1].PacketBuffer),
+                                       le32_to_cpu(np->tx_ring.orig[i+1].FlagLen),
+                                       le32_to_cpu(np->tx_ring.orig[i+2].PacketBuffer),
+                                       le32_to_cpu(np->tx_ring.orig[i+2].FlagLen),
+                                       le32_to_cpu(np->tx_ring.orig[i+3].PacketBuffer),
+                                       le32_to_cpu(np->tx_ring.orig[i+3].FlagLen));
+                        } else {
+                                printk(KERN_INFO "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
+                                       i, 
+                                       le32_to_cpu(np->tx_ring.ex[i].PacketBufferHigh),
+                                       le32_to_cpu(np->tx_ring.ex[i].PacketBufferLow),
+                                       le32_to_cpu(np->tx_ring.ex[i].FlagLen),
+                                       le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferHigh),
+                                       le32_to_cpu(np->tx_ring.ex[i+1].PacketBufferLow),
+                                       le32_to_cpu(np->tx_ring.ex[i+1].FlagLen),
+                                       le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferHigh),
+                                       le32_to_cpu(np->tx_ring.ex[i+2].PacketBufferLow),
+                                       le32_to_cpu(np->tx_ring.ex[i+2].FlagLen),
+                                       le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferHigh),
+                                       le32_to_cpu(np->tx_ring.ex[i+3].PacketBufferLow),
+                                       le32_to_cpu(np->tx_ring.ex[i+3].FlagLen));
+                        }
                 }
         }
 
@@ -1061,7 +1128,10 @@ static void nv_tx_timeout(struct net_device *dev)
                 printk(KERN_DEBUG "%s: tx_timeout: dead entries!\n", dev->name);
                 nv_drain_tx(dev);
                 np->next_tx = np->nic_tx = 0;
-                writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                        writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+                else
+                        writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
                 netif_wake_queue(dev);
         }
 
@@ -1136,8 +1206,13 @@ static void nv_rx_process(struct net_device *dev)
                         break;  /* we scanned the whole ring - do not continue */
 
                 i = np->cur_rx % RX_RING;
-                Flags = le32_to_cpu(np->rx_ring[i].FlagLen);
-                len = nv_descr_getlength(&np->rx_ring[i], np->desc_ver);
+                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+                        Flags = le32_to_cpu(np->rx_ring.orig[i].FlagLen);
+                        len = nv_descr_getlength(&np->rx_ring.orig[i], np->desc_ver);
+                } else {
+                        Flags = le32_to_cpu(np->rx_ring.ex[i].FlagLen);
+                        len = nv_descr_getlength_ex(&np->rx_ring.ex[i], np->desc_ver);
+                }
 
                 dprintk(KERN_DEBUG "%s: nv_rx_process: looking at packet %d, Flags 0x%x.\n",
                                         dev->name, np->cur_rx, Flags);
@@ -1321,7 +1396,10 @@ static int nv_change_mtu(struct net_device *dev, int new_mtu)
                 /* reinit nic view of the rx queue */
                 writel(np->rx_buf_sz, base + NvRegOffloadConfig);
                 writel((u32) np->ring_addr, base + NvRegRxRingPhysAddr);
-                writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+                if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                        writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+                else
+                        writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
                 writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
                         base + NvRegRingSizes);
                 pci_push(base);
@@ -1982,7 +2060,10 @@ static int nv_open(struct net_device *dev)
 
         /* 4) give hw rings */
         writel((u32) np->ring_addr, base + NvRegRxRingPhysAddr);
-        writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+        if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+        else
+                writel((u32) (np->ring_addr + RX_RING*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
         writel( ((RX_RING-1) << NVREG_RINGSZ_RXSHIFT) + ((TX_RING-1) << NVREG_RINGSZ_TXSHIFT),
                 base + NvRegRingSizes);
 
@@ -2173,24 +2254,48 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
         }
 
         /* handle different descriptor versions */
-        np->desc_ver = DESC_VER_1;
-        np->pkt_limit = NV_PKTLIMIT_1;
-        if (id->driver_data & DEV_HAS_LARGEDESC) {
+        if (id->driver_data & DEV_HAS_HIGH_DMA) {
+                /* packet format 3: supports 40-bit addressing */
+                np->desc_ver = DESC_VER_3;
+                if (pci_set_dma_mask(pci_dev, 0x0000007fffffffffULL)) {
+                        printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n",
+                                        pci_name(pci_dev));
+                }
+        } else if (id->driver_data & DEV_HAS_LARGEDESC) {
+                /* packet format 2: supports jumbo frames */
                 np->desc_ver = DESC_VER_2;
-                np->pkt_limit = NV_PKTLIMIT_2;
+        } else {
+                /* original packet format */
+                np->desc_ver = DESC_VER_1;
         }
- 
+
+        np->pkt_limit = NV_PKTLIMIT_1;
+        if (id->driver_data & DEV_HAS_LARGEDESC)
+                np->pkt_limit = NV_PKTLIMIT_2;
+
         err = -ENOMEM;
         np->base = ioremap(addr, NV_PCI_REGSZ);
         if (!np->base)
                 goto out_relreg;
         dev->base_addr = (unsigned long)np->base;
+
         dev->irq = pci_dev->irq;
-        np->rx_ring = pci_alloc_consistent(pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
-                                                &np->ring_addr);
-        if (!np->rx_ring)
-                goto out_unmap;
-        np->tx_ring = &np->rx_ring[RX_RING];
+
+        if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
+                np->rx_ring.orig = pci_alloc_consistent(pci_dev,
+                                        sizeof(struct ring_desc) * (RX_RING + TX_RING),
+                                        &np->ring_addr);
+                if (!np->rx_ring.orig)
+                        goto out_unmap;
+                np->tx_ring.orig = &np->rx_ring.orig[RX_RING];
+        } else {
+                np->rx_ring.ex = pci_alloc_consistent(pci_dev,
+                                        sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
+                                        &np->ring_addr);
+                if (!np->rx_ring.ex)
+                        goto out_unmap;
+                np->tx_ring.ex = &np->rx_ring.ex[RX_RING];
+        }
 
         dev->open = nv_open;
         dev->stop = nv_close;
@@ -2313,8 +2418,12 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
         return 0;
 
 out_freering:
-        pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
-                                np->rx_ring, np->ring_addr);
+        if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING),
+                                    np->rx_ring.orig, np->ring_addr);
+        else
+                pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING),
+                                    np->rx_ring.ex, np->ring_addr);
         pci_set_drvdata(pci_dev, NULL);
 out_unmap:
         iounmap(get_hwbase(dev));
@@ -2343,7 +2452,10 @@ static void __devexit nv_remove(struct pci_dev *pci_dev)
         writel(np->orig_mac[1], base + NvRegMacAddrB);
 
         /* free all structures */
-        pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), np->rx_ring, np->ring_addr);
+        if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+                pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (RX_RING + TX_RING), np->rx_ring.orig, np->ring_addr);
+        else
+                pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (RX_RING + TX_RING), np->rx_ring.ex, np->ring_addr);
         iounmap(get_hwbase(dev));
         pci_release_regions(pci_dev);
         pci_disable_device(pci_dev);
@@ -2382,35 +2494,35 @@ static struct pci_device_id pci_tbl[] = {
         },
         {       /* CK804 Ethernet Controller */
                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_8),
-                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
         },
         {       /* CK804 Ethernet Controller */
                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_9),
-                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
         },
         {       /* MCP04 Ethernet Controller */
                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_10),
-                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
         },
         {       /* MCP04 Ethernet Controller */
                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_11),
-                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
         },
         {       /* MCP51 Ethernet Controller */
                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_12),
-                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA,
         },
         {       /* MCP51 Ethernet Controller */
                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_13),
-                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA,
         },
         {       /* MCP55 Ethernet Controller */
                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_14),
-                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
         },
         {       /* MCP55 Ethernet Controller */
                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15),
-                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC,
+                .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA,
         },
         {0,},
 };