[PATCH v5 16/45] net/sxe2: use regular write for mapped registers

[liujie5 at linkdatatechnology.com]

From: Jie Liu <liujie5 at linkdatatechnology.com>

sxe2_pci_map_write_reg() uses the write-combined store
(SXE2_PCI_REG_WRITE_WC) to write control registers, which is intended
for doorbell/tail writes and can be lossy or delayed for ordering
sensitive register updates.

Add SXE2_PCI_REG_WRITE macro using a regular rte_write32() and use it
in sxe2_pci_map_write_reg().

Fixes: 8cebf80f1eda ("net/sxe2: support Rx interrupt")
Cc: stable at dpdk.org
Cc: stephen at networkplumber.org
Signed-off-by: Jie Liu <liujie5 at linkdatatechnology.com>
---
 drivers/net/sxe2/sxe2_ethdev.c | 2 +-
 drivers/net/sxe2/sxe2_ethdev.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/sxe2/sxe2_ethdev.c b/drivers/net/sxe2/sxe2_ethdev.c
index 7a11a93dff..589f09c113 100644
--- a/drivers/net/sxe2/sxe2_ethdev.c
+++ b/drivers/net/sxe2/sxe2_ethdev.c
@@ -1439,7 +1439,7 @@ void sxe2_pci_map_write_reg(struct sxe2_adapter *adapter,
 		goto l_ret;
 	}
 
-	SXE2_PCI_REG_WRITE_WC(reg_addr, value);
+	SXE2_PCI_REG_WRITE(reg_addr, value);
 l_ret:
 	return;
 }
diff --git a/drivers/net/sxe2/sxe2_ethdev.h b/drivers/net/sxe2/sxe2_ethdev.h
index 1409be74d3..cf1104144c 100644
--- a/drivers/net/sxe2/sxe2_ethdev.h
+++ b/drivers/net/sxe2/sxe2_ethdev.h
@@ -355,6 +355,8 @@ struct sxe2_adapter {
 #define SXE2_DEV_PRIVATE_TO_ADAPTER(dev) \
 	((struct sxe2_adapter *)(dev)->data->dev_private)
 
+#define SXE2_PCI_REG_WRITE(reg, value) rte_write32((rte_cpu_to_le_32(value)), (reg))
+
 void *sxe2_pci_map_addr_get(struct sxe2_adapter *adapter,
 			    enum sxe2_pci_map_resource res_type,
 			    uint16_t idx_in_func);
-- 
2.52.0