diff options
| author | Stephen Hemminger <shemminger@osdl.org> | 2006-01-06 16:57:40 -0800 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2006-01-09 10:32:40 -0500 |
| commit | bce7c95e4dd4d5e924deb2929b639b4caca09c93 (patch) | |
| tree | 0ed78b75ba55aada28f4f02a1f5f89da5b55125d | |
| parent | 17fa6e2f115ad734ef802b663071159a1a64d06f (diff) | |
[PATCH] sk98lin: not doing high dma properly
Sk98lin 64bit memory handling is wrong. It doesn't set the
highdma flag; i.e. the kernel always does bounce buffers.
It doesn't fallback to 32 bit mask if it can't get 64 bit mask.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
| -rw-r--r-- | drivers/net/sk98lin/skge.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/net/sk98lin/skge.c b/drivers/net/sk98lin/skge.c index 3302d644011..9a879530ef6 100644 --- a/drivers/net/sk98lin/skge.c +++ b/drivers/net/sk98lin/skge.c @@ -4775,16 +4775,30 @@ static int __devinit skge_probe_one(struct pci_dev *pdev, struct net_device *dev = NULL; static int boards_found = 0; int error = -ENODEV; + int using_dac = 0; char DeviceStr[80]; if (pci_enable_device(pdev)) goto out; /* Configure DMA attributes. */ - if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) && - pci_set_dma_mask(pdev, DMA_32BIT_MASK)) - goto out_disable_device; - + if (sizeof(dma_addr_t) > sizeof(u32) && + !(error = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) { + using_dac = 1; + error = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); + if (error < 0) { + printk(KERN_ERR "sk98lin %s unable to obtain 64 bit DMA " + "for consistent allocations\n", pci_name(pdev)); + goto out_disable_device; + } + } else { + error = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + if (error) { + printk(KERN_ERR "sk98lin %s no usable DMA configuration\n", + pci_name(pdev)); + goto out_disable_device; + } + } if ((dev = alloc_etherdev(sizeof(DEV_NET))) == NULL) { printk(KERN_ERR "Unable to allocate etherdev " @@ -4843,6 +4857,9 @@ static int __devinit skge_probe_one(struct pci_dev *pdev, #endif } + if (using_dac) + dev->features |= NETIF_F_HIGHDMA; + pAC->Index = boards_found++; if (SkGeBoardInit(dev, pAC)) @@ -4919,6 +4936,9 @@ static int __devinit skge_probe_one(struct pci_dev *pdev, #endif } + if (using_dac) + dev->features |= NETIF_F_HIGHDMA; + if (register_netdev(dev)) { printk(KERN_ERR "sk98lin: Could not register device for seconf port.\n"); free_netdev(dev); |