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authorBrice Goglin <brice@myri.com>2007-03-07 20:00:45 +0100
committerJeff Garzik <jeff@garzik.org>2007-03-09 11:51:32 -0500
commit34fdccea93e858aaece3f127628365b546f96857 (patch)
tree4fce59b6306a3b71f6512ff6ab389b70c944f020 /drivers/net
parent355c7265f4745a2aa6f0482d466e2271e6b3c61a (diff)
myri10ge: use pci_map_page to prepare the dmatest buffer
Allocate a specific page and use pci_map_page for dma test instead of relying on another existing buffer. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/myri10ge/myri10ge.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index db282ed9ab7..eab9b5acd0c 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -717,6 +717,8 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
int status;
size_t bytes;
u32 len;
+ struct page *dmatest_page;
+ dma_addr_t dmatest_bus;
/* try to send a reset command to the card to see if it
* is alive */
@@ -726,6 +728,11 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
dev_err(&mgp->pdev->dev, "failed reset\n");
return -ENXIO;
}
+ dmatest_page = alloc_page(GFP_KERNEL);
+ if (!dmatest_page)
+ return -ENOMEM;
+ dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
/* Now exchange information about interrupts */
@@ -764,8 +771,8 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
len = mgp->tx.boundary;
- cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->rx_done.bus);
- cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->rx_done.bus);
+ cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
+ cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
cmd.data2 = len * 0x10000;
status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0);
if (status == 0)
@@ -774,8 +781,8 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
else
dev_warn(&mgp->pdev->dev, "DMA read benchmark failed: %d\n",
status);
- cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->rx_done.bus);
- cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->rx_done.bus);
+ cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
+ cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
cmd.data2 = len * 0x1;
status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0);
if (status == 0)
@@ -785,8 +792,8 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
dev_warn(&mgp->pdev->dev, "DMA write benchmark failed: %d\n",
status);
- cmd.data0 = MYRI10GE_LOWPART_TO_U32(mgp->rx_done.bus);
- cmd.data1 = MYRI10GE_HIGHPART_TO_U32(mgp->rx_done.bus);
+ cmd.data0 = MYRI10GE_LOWPART_TO_U32(dmatest_bus);
+ cmd.data1 = MYRI10GE_HIGHPART_TO_U32(dmatest_bus);
cmd.data2 = len * 0x10001;
status = myri10ge_send_cmd(mgp, MXGEFW_DMA_TEST, &cmd, 0);
if (status == 0)
@@ -796,6 +803,9 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
dev_warn(&mgp->pdev->dev,
"DMA read/write benchmark failed: %d\n", status);
+ pci_unmap_page(mgp->pdev, dmatest_bus, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ put_page(dmatest_page);
+
memset(mgp->rx_done.entry, 0, bytes);
/* reset mcp/driver shared state back to 0 */