From: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Date: Wed, 18 Jan 2017 01:21:36 +0000 (+0530)
Subject: net/i40e: use I/O device memory read/write API
X-Git-Tag: spdx-start~4743
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=e6469e717148ad9bc111f07cc6f0ae9603a5864d

net/i40e: use I/O device memory read/write API

Replace the raw I/O device memory read/write access with eal abstraction
for I/O device memory read/write access to fix portability issues across
different architectures.

CC: Helin Zhang <helin.zhang@intel.com>
CC: Jingjing Wu <jingjing.wu@intel.com>
Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Signed-off-by: Satha Rao <skoteshwar@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---

diff --git a/drivers/net/i40e/base/i40e_osdep.h b/drivers/net/i40e/base/i40e_osdep.h
index 38e7ba5b1f..c57ecded21 100644
--- a/drivers/net/i40e/base/i40e_osdep.h
+++ b/drivers/net/i40e/base/i40e_osdep.h
@@ -44,6 +44,7 @@
 #include <rte_cycles.h>
 #include <rte_spinlock.h>
 #include <rte_log.h>
+#include <rte_io.h>
 
 #include "../i40e_logs.h"
 
@@ -153,15 +154,18 @@ do {                                                            \
  * I40E_PRTQF_FD_MSK
  */
 
-#define I40E_PCI_REG(reg)         (*((volatile uint32_t *)(reg)))
+#define I40E_PCI_REG(reg)		rte_read32(reg)
 #define I40E_PCI_REG_ADDR(a, reg) \
 	((volatile uint32_t *)((char *)(a)->hw_addr + (reg)))
 static inline uint32_t i40e_read_addr(volatile void *addr)
 {
 	return rte_le_to_cpu_32(I40E_PCI_REG(addr));
 }
-#define I40E_PCI_REG_WRITE(reg, value) \
-	do { I40E_PCI_REG((reg)) = rte_cpu_to_le_32(value); } while (0)
+
+#define I40E_PCI_REG_WRITE(reg, value)		\
+	rte_write32((rte_cpu_to_le_32(value)), reg)
+#define I40E_PCI_REG_WRITE_RELAXED(reg, value)	\
+	rte_write32_relaxed((rte_cpu_to_le_32(value)), reg)
 
 #define I40E_WRITE_FLUSH(a) I40E_READ_REG(a, I40E_GLGEN_STAT)
 #define I40EVF_WRITE_FLUSH(a) I40E_READ_REG(a, I40E_VFGEN_RSTAT)
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index e42ba5dde7..89b9bf1c19 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -585,7 +585,7 @@ i40e_rx_alloc_bufs(struct i40e_rx_queue *rxq)
 
 	/* Update rx tail regsiter */
 	rte_wmb();
-	I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->rx_free_trigger);
+	I40E_PCI_REG_WRITE_RELAXED(rxq->qrx_tail, rxq->rx_free_trigger);
 
 	rxq->rx_free_trigger =
 		(uint16_t)(rxq->rx_free_trigger + rxq->rx_free_thresh);
@@ -1232,7 +1232,7 @@ end_of_tx:
 		   (unsigned) txq->port_id, (unsigned) txq->queue_id,
 		   (unsigned) tx_id, (unsigned) nb_tx);
 
-	I40E_PCI_REG_WRITE(txq->qtx_tail, tx_id);
+	I40E_PCI_REG_WRITE_RELAXED(txq->qtx_tail, tx_id);
 	txq->tx_tail = tx_id;
 
 	return nb_tx;
@@ -1384,7 +1384,7 @@ tx_xmit_pkts(struct i40e_tx_queue *txq,
 
 	/* Update the tx tail register */
 	rte_wmb();
-	I40E_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
+	I40E_PCI_REG_WRITE_RELAXED(txq->qtx_tail, txq->tx_tail);
 
 	return nb_pkts;
 }