From: Jay Cliburn <[email protected]>
Add DMA engine configuration tweaks per current vendor atl1 driver version
1.2.40.2.
Signed-off-by: Jay Cliburn <[email protected]>
---
drivers/net/atlx/atl1.c | 10 ++++++++++
drivers/net/atlx/atlx.h | 6 ++++++
2 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c
index c93cf19..fb0a0af 100644
--- a/drivers/net/atlx/atl1.c
+++ b/drivers/net/atlx/atl1.c
@@ -666,6 +666,7 @@ static u32 atl1_configure(struct atl1_adapter *adapter)
{
struct atl1_hw *hw = &adapter->hw;
u32 value;
+ u16 x;
/* clear interrupt status */
iowrite32(0xffffffff, adapter->hw.hw_addr + REG_ISR);
@@ -797,6 +798,15 @@ static u32 atl1_configure(struct atl1_adapter *adapter)
iowrite32(value, hw->hw_addr + REG_RXQ_CTRL);
/* config DMA Engine */
+ value = ioread32(hw->hw_addr + REG_DEVICE_CTRL);
+ x = (value >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT) &
+ DEVICE_CTRL_MAX_PAYLOAD_MASK;
+ if (x < hw->dmaw_block)
+ hw->dmaw_block = x;
+ x = (value >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT) &
+ DEVICE_CTRL_MAX_RREQ_SZ_MASK;
+ if (x < hw->dmar_block)
+ hw->dmar_block = x;
value = ((((u32) hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
<< DMA_CTRL_DMAR_BURST_LEN_SHIFT) |
((((u32) hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK)
diff --git a/drivers/net/atlx/atlx.h b/drivers/net/atlx/atlx.h
index 3be7c09..43b8531 100644
--- a/drivers/net/atlx/atlx.h
+++ b/drivers/net/atlx/atlx.h
@@ -53,6 +53,12 @@ MODULE_VERSION(ATLX_DRIVER_VERSION);
#define REG_PCIE_CAP_LIST 0x58
+#define REG_DEVICE_CTRL 0x60
+#define DEVICE_CTRL_MAX_PAYLOAD_MASK 0x7
+#define DEVICE_CTRL_MAX_PAYLOAD_SHIFT 5
+#define DEVICE_CTRL_MAX_RREQ_SZ_MASK 0x7
+#define DEVICE_CTRL_MAX_RREQ_SZ_SHIFT 12
+
#define REG_VPD_CAP 0x6C
#define VPD_CAP_ID_MASK 0xFF
#define VPD_CAP_ID_SHIFT 0
--
1.5.3.3
--
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