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Message-ID: <20100427230836.26173.59671.stgit@localhost.localdomain>
Date: Tue, 27 Apr 2010 16:08:45 -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 1/7] e1000: 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/e1000/e1000_ethtool.c | 46 +++++++++------
drivers/net/e1000/e1000_main.c | 110 +++++++++++++++++++++----------------
2 files changed, 88 insertions(+), 68 deletions(-)
diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c
index c67e931..616b405 100644
--- a/drivers/net/e1000/e1000_ethtool.c
+++ b/drivers/net/e1000/e1000_ethtool.c
@@ -980,9 +980,10 @@ static void e1000_free_desc_rings(struct e1000_adapter *adapter)
if (txdr->desc && txdr->buffer_info) {
for (i = 0; i < txdr->count; i++) {
if (txdr->buffer_info[i].dma)
- pci_unmap_single(pdev, txdr->buffer_info[i].dma,
+ dma_unmap_single(&pdev->dev,
+ txdr->buffer_info[i].dma,
txdr->buffer_info[i].length,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
if (txdr->buffer_info[i].skb)
dev_kfree_skb(txdr->buffer_info[i].skb);
}
@@ -991,20 +992,23 @@ static void e1000_free_desc_rings(struct e1000_adapter *adapter)
if (rxdr->desc && rxdr->buffer_info) {
for (i = 0; i < rxdr->count; i++) {
if (rxdr->buffer_info[i].dma)
- pci_unmap_single(pdev, rxdr->buffer_info[i].dma,
+ dma_unmap_single(&pdev->dev,
+ rxdr->buffer_info[i].dma,
rxdr->buffer_info[i].length,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
if (rxdr->buffer_info[i].skb)
dev_kfree_skb(rxdr->buffer_info[i].skb);
}
}
if (txdr->desc) {
- pci_free_consistent(pdev, txdr->size, txdr->desc, txdr->dma);
+ dma_free_coherent(&pdev->dev, txdr->size, txdr->desc,
+ txdr->dma);
txdr->desc = NULL;
}
if (rxdr->desc) {
- pci_free_consistent(pdev, rxdr->size, rxdr->desc, rxdr->dma);
+ dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc,
+ rxdr->dma);
rxdr->desc = NULL;
}
@@ -1039,7 +1043,8 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
txdr->size = txdr->count * sizeof(struct e1000_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) {
ret_val = 2;
goto err_nomem;
@@ -1070,8 +1075,8 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
txdr->buffer_info[i].skb = skb;
txdr->buffer_info[i].length = skb->len;
txdr->buffer_info[i].dma =
- pci_map_single(pdev, skb->data, skb->len,
- PCI_DMA_TODEVICE);
+ dma_map_single(&pdev->dev, skb->data, skb->len,
+ DMA_TO_DEVICE);
tx_desc->buffer_addr = cpu_to_le64(txdr->buffer_info[i].dma);
tx_desc->lower.data = cpu_to_le32(skb->len);
tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP |
@@ -1093,7 +1098,8 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
}
rxdr->size = rxdr->count * sizeof(struct e1000_rx_desc);
- 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) {
ret_val = 5;
goto err_nomem;
@@ -1126,8 +1132,8 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
rxdr->buffer_info[i].skb = skb;
rxdr->buffer_info[i].length = E1000_RXBUFFER_2048;
rxdr->buffer_info[i].dma =
- pci_map_single(pdev, skb->data, E1000_RXBUFFER_2048,
- PCI_DMA_FROMDEVICE);
+ dma_map_single(&pdev->dev, skb->data,
+ E1000_RXBUFFER_2048, DMA_FROM_DEVICE);
rx_desc->buffer_addr = cpu_to_le64(rxdr->buffer_info[i].dma);
memset(skb->data, 0x00, skb->len);
}
@@ -1444,10 +1450,10 @@ static int e1000_run_loopback_test(struct e1000_adapter *adapter)
for (i = 0; i < 64; i++) { /* send the packets */
e1000_create_lbtest_frame(txdr->buffer_info[i].skb,
1024);
- pci_dma_sync_single_for_device(pdev,
- txdr->buffer_info[k].dma,
- txdr->buffer_info[k].length,
- PCI_DMA_TODEVICE);
+ dma_sync_single_for_device(&pdev->dev,
+ txdr->buffer_info[k].dma,
+ txdr->buffer_info[k].length,
+ DMA_TO_DEVICE);
if (unlikely(++k == txdr->count)) k = 0;
}
ew32(TDT, k);
@@ -1455,10 +1461,10 @@ static int e1000_run_loopback_test(struct e1000_adapter *adapter)
time = jiffies; /* set the start time for the receive */
good_cnt = 0;
do { /* receive the sent packets */
- pci_dma_sync_single_for_cpu(pdev,
- rxdr->buffer_info[l].dma,
- rxdr->buffer_info[l].length,
- PCI_DMA_FROMDEVICE);
+ dma_sync_single_for_cpu(&pdev->dev,
+ rxdr->buffer_info[l].dma,
+ rxdr->buffer_info[l].length,
+ DMA_FROM_DEVICE);
ret_val = e1000_check_lbtest_frame(
rxdr->buffer_info[l].skb,
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 974a02d..0a56e7d 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -823,13 +823,14 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
if (err)
return err;
- if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
- !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
+ if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
+ !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
pci_using_dac = 1;
} else {
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (err) {
- err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ err = dma_set_coherent_mask(&pdev->dev,
+ DMA_BIT_MASK(32));
if (err) {
E1000_ERR("No usable DMA configuration, "
"aborting\n");
@@ -1395,7 +1396,8 @@ static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
txdr->size = txdr->count * sizeof(struct e1000_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) {
setup_tx_desc_die:
vfree(txdr->buffer_info);
@@ -1411,18 +1413,21 @@ setup_tx_desc_die:
DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
"at %p\n", txdr->size, txdr->desc);
/* Try again, without freeing the previous */
- txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
+ txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size,
+ &txdr->dma, GFP_KERNEL);
/* Failed allocation, critical failure */
if (!txdr->desc) {
- pci_free_consistent(pdev, txdr->size, olddesc, olddma);
+ dma_free_coherent(&pdev->dev, txdr->size, olddesc,
+ olddma);
goto setup_tx_desc_die;
}
if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
/* give up */
- pci_free_consistent(pdev, txdr->size, txdr->desc,
- txdr->dma);
- pci_free_consistent(pdev, txdr->size, olddesc, olddma);
+ dma_free_coherent(&pdev->dev, txdr->size, txdr->desc,
+ txdr->dma);
+ dma_free_coherent(&pdev->dev, txdr->size, olddesc,
+ olddma);
DPRINTK(PROBE, ERR,
"Unable to allocate aligned memory "
"for the transmit descriptor ring\n");
@@ -1430,7 +1435,8 @@ setup_tx_desc_die:
return -ENOMEM;
} else {
/* Free old allocation, new allocation was successful */
- pci_free_consistent(pdev, txdr->size, olddesc, olddma);
+ dma_free_coherent(&pdev->dev, txdr->size, olddesc,
+ olddma);
}
}
memset(txdr->desc, 0, txdr->size);
@@ -1590,7 +1596,8 @@ static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
rxdr->size = rxdr->count * desc_len;
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) {
DPRINTK(PROBE, ERR,
@@ -1607,10 +1614,12 @@ setup_rx_desc_die:
DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
"at %p\n", rxdr->size, rxdr->desc);
/* Try again, without freeing the previous */
- rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
+ rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size,
+ &rxdr->dma, GFP_KERNEL);
/* Failed allocation, critical failure */
if (!rxdr->desc) {
- pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
+ dma_free_coherent(&pdev->dev, rxdr->size, olddesc,
+ olddma);
DPRINTK(PROBE, ERR,
"Unable to allocate memory "
"for the receive descriptor ring\n");
@@ -1619,16 +1628,18 @@ setup_rx_desc_die:
if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
/* give up */
- pci_free_consistent(pdev, rxdr->size, rxdr->desc,
- rxdr->dma);
- pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
+ dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc,
+ rxdr->dma);
+ dma_free_coherent(&pdev->dev, rxdr->size, olddesc,
+ olddma);
DPRINTK(PROBE, ERR,
"Unable to allocate aligned memory "
"for the receive descriptor ring\n");
goto setup_rx_desc_die;
} else {
/* Free old allocation, new allocation was successful */
- pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
+ dma_free_coherent(&pdev->dev, rxdr->size, olddesc,
+ olddma);
}
}
memset(rxdr->desc, 0, rxdr->size);
@@ -1804,7 +1815,8 @@ static void e1000_free_tx_resources(struct e1000_adapter *adapter,
vfree(tx_ring->buffer_info);
tx_ring->buffer_info = NULL;
- pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
+ dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
+ tx_ring->dma);
tx_ring->desc = NULL;
}
@@ -1829,12 +1841,12 @@ static void e1000_unmap_and_free_tx_resource(struct e1000_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,
+ dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
buffer_info->length,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
buffer_info->dma = 0;
}
if (buffer_info->skb) {
@@ -1912,7 +1924,8 @@ static void e1000_free_rx_resources(struct e1000_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;
}
@@ -1952,14 +1965,14 @@ static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
buffer_info = &rx_ring->buffer_info[i];
if (buffer_info->dma &&
adapter->clean_rx == e1000_clean_rx_irq) {
- pci_unmap_single(pdev, buffer_info->dma,
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
buffer_info->length,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
} else if (buffer_info->dma &&
adapter->clean_rx == e1000_clean_jumbo_rx_irq) {
- pci_unmap_page(pdev, buffer_info->dma,
- buffer_info->length,
- PCI_DMA_FROMDEVICE);
+ dma_unmap_page(&pdev->dev, buffer_info->dma,
+ buffer_info->length,
+ DMA_FROM_DEVICE);
}
buffer_info->dma = 0;
@@ -2714,9 +2727,10 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
/* set time_stamp *before* dma to help avoid a possible race */
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 = i;
@@ -2760,10 +2774,10 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
buffer_info->length = size;
buffer_info->time_stamp = jiffies;
buffer_info->mapped_as_page = true;
- buffer_info->dma = pci_map_page(pdev, frag->page,
+ buffer_info->dma = dma_map_page(&pdev->dev, frag->page,
offset, size,
- PCI_DMA_TODEVICE);
- if (pci_dma_mapping_error(pdev, buffer_info->dma))
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma))
goto dma_error;
buffer_info->next_to_watch = i;
@@ -3634,8 +3648,8 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
cleaned = true;
cleaned_count++;
- pci_unmap_page(pdev, buffer_info->dma, buffer_info->length,
- PCI_DMA_FROMDEVICE);
+ dma_unmap_page(&pdev->dev, buffer_info->dma,
+ buffer_info->length, DMA_FROM_DEVICE);
buffer_info->dma = 0;
length = le16_to_cpu(rx_desc->length);
@@ -3817,8 +3831,8 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
cleaned = true;
cleaned_count++;
- pci_unmap_single(pdev, buffer_info->dma, buffer_info->length,
- PCI_DMA_FROMDEVICE);
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ buffer_info->length, DMA_FROM_DEVICE);
buffer_info->dma = 0;
length = le16_to_cpu(rx_desc->length);
@@ -3998,11 +4012,11 @@ check_page:
}
if (!buffer_info->dma) {
- buffer_info->dma = pci_map_page(pdev,
+ buffer_info->dma = dma_map_page(&pdev->dev,
buffer_info->page, 0,
- buffer_info->length,
- PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(pdev, buffer_info->dma)) {
+ buffer_info->length,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
put_page(buffer_info->page);
dev_kfree_skb(skb);
buffer_info->page = NULL;
@@ -4098,11 +4112,11 @@ static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
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,
buffer_info->length,
- PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(pdev, buffer_info->dma)) {
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
dev_kfree_skb(skb);
buffer_info->skb = NULL;
buffer_info->dma = 0;
@@ -4126,9 +4140,9 @@ map_skb:
dev_kfree_skb(skb);
buffer_info->skb = NULL;
- pci_unmap_single(pdev, buffer_info->dma,
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
adapter->rx_buffer_len,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
buffer_info->dma = 0;
adapter->alloc_rx_buff_failed++;
--
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