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Date: Tue, 27 Apr 2010 16:10:03 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, gospo@...hat.com,
Nicholas Nunley <nicholasx.d.nunley@...el.com>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next-2.6 PATCH 5/7] ixgb: use DMA API instead of PCI DMA
functions
From: Nick Nunley <nicholasx.d.nunley@...el.com>
Signed-off-by: Nicholas Nunley <nicholasx.d.nunley@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ixgb/ixgb_main.c | 70 +++++++++++++++++++++++-------------------
1 files changed, 39 insertions(+), 31 deletions(-)
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index 3cf7951..d58ca6b 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -368,16 +368,22 @@ ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (err)
return err;
- if (!(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) &&
- !(err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))) {
- pci_using_dac = 1;
+ pci_using_dac = 0;
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
+ if (!err) {
+ err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
+ if (!err)
+ pci_using_dac = 1;
} else {
- if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) ||
- (err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))) {
- pr_err("No usable DMA configuration, aborting\n");
- goto err_dma_mask;
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+ if (err) {
+ err = dma_set_coherent_mask(&pdev->dev,
+ DMA_BIT_MASK(32));
+ if (err) {
+ pr_err("No usable DMA configuration, aborting\n");
+ goto err_dma_mask;
+ }
}
- pci_using_dac = 0;
}
err = pci_request_regions(pdev, ixgb_driver_name);
@@ -673,7 +679,8 @@ ixgb_setup_tx_resources(struct ixgb_adapter *adapter)
txdr->size = txdr->count * sizeof(struct ixgb_tx_desc);
txdr->size = ALIGN(txdr->size, 4096);
- txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
+ txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma,
+ GFP_KERNEL);
if (!txdr->desc) {
vfree(txdr->buffer_info);
netif_err(adapter, probe, adapter->netdev,
@@ -762,7 +769,8 @@ ixgb_setup_rx_resources(struct ixgb_adapter *adapter)
rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc);
rxdr->size = ALIGN(rxdr->size, 4096);
- rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
+ rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma,
+ GFP_KERNEL);
if (!rxdr->desc) {
vfree(rxdr->buffer_info);
@@ -883,8 +891,8 @@ ixgb_free_tx_resources(struct ixgb_adapter *adapter)
vfree(adapter->tx_ring.buffer_info);
adapter->tx_ring.buffer_info = NULL;
- pci_free_consistent(pdev, adapter->tx_ring.size,
- adapter->tx_ring.desc, adapter->tx_ring.dma);
+ dma_free_coherent(&pdev->dev, adapter->tx_ring.size,
+ adapter->tx_ring.desc, adapter->tx_ring.dma);
adapter->tx_ring.desc = NULL;
}
@@ -895,12 +903,11 @@ ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter,
{
if (buffer_info->dma) {
if (buffer_info->mapped_as_page)
- pci_unmap_page(adapter->pdev, buffer_info->dma,
- buffer_info->length, PCI_DMA_TODEVICE);
+ dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
+ buffer_info->length, DMA_TO_DEVICE);
else
- pci_unmap_single(adapter->pdev, buffer_info->dma,
- buffer_info->length,
- PCI_DMA_TODEVICE);
+ dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
+ buffer_info->length, DMA_TO_DEVICE);
buffer_info->dma = 0;
}
@@ -966,7 +973,8 @@ ixgb_free_rx_resources(struct ixgb_adapter *adapter)
vfree(rx_ring->buffer_info);
rx_ring->buffer_info = NULL;
- pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
+ dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
+ rx_ring->dma);
rx_ring->desc = NULL;
}
@@ -990,10 +998,10 @@ ixgb_clean_rx_ring(struct ixgb_adapter *adapter)
for (i = 0; i < rx_ring->count; i++) {
buffer_info = &rx_ring->buffer_info[i];
if (buffer_info->dma) {
- pci_unmap_single(pdev,
+ dma_unmap_single(&pdev->dev,
buffer_info->dma,
buffer_info->length,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
buffer_info->dma = 0;
buffer_info->length = 0;
}
@@ -1300,9 +1308,10 @@ ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb,
WARN_ON(buffer_info->dma != 0);
buffer_info->time_stamp = jiffies;
buffer_info->mapped_as_page = false;
- buffer_info->dma = pci_map_single(pdev, skb->data + offset,
- size, PCI_DMA_TODEVICE);
- if (pci_dma_mapping_error(pdev, buffer_info->dma))
+ buffer_info->dma = dma_map_single(&pdev->dev,
+ skb->data + offset,
+ size, DMA_TO_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma))
goto dma_error;
buffer_info->next_to_watch = 0;
@@ -1341,10 +1350,9 @@ ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb,
buffer_info->time_stamp = jiffies;
buffer_info->mapped_as_page = true;
buffer_info->dma =
- pci_map_page(pdev, frag->page,
- offset, size,
- PCI_DMA_TODEVICE);
- if (pci_dma_mapping_error(pdev, buffer_info->dma))
+ dma_map_page(&pdev->dev, frag->page,
+ offset, size, DMA_TO_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma))
goto dma_error;
buffer_info->next_to_watch = 0;
@@ -1962,10 +1970,10 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do)
cleaned = true;
cleaned_count++;
- pci_unmap_single(pdev,
+ dma_unmap_single(&pdev->dev,
buffer_info->dma,
buffer_info->length,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
buffer_info->dma = 0;
length = le16_to_cpu(rx_desc->length);
@@ -2088,10 +2096,10 @@ ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter, int cleaned_count)
buffer_info->skb = skb;
buffer_info->length = adapter->rx_buffer_len;
map_skb:
- buffer_info->dma = pci_map_single(pdev,
+ buffer_info->dma = dma_map_single(&pdev->dev,
skb->data,
adapter->rx_buffer_len,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
rx_desc = IXGB_RX_DESC(*rx_ring, i);
rx_desc->buff_addr = cpu_to_le64(buffer_info->dma);
--
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