From: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Date: Wed, 18 Jan 2017 01:21:37 +0000 (+0530)
Subject: net/ixgbe: use I/O device memory read/write API
X-Git-Tag: spdx-start~4744
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=a66114965bbb2a79825e99e7ee2d5975b77fc2ae;p=dpdk.git

net/ixgbe: 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: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---

diff --git a/drivers/net/ixgbe/base/ixgbe_osdep.h b/drivers/net/ixgbe/base/ixgbe_osdep.h
index fe532aaa94..4aab278d55 100644
--- a/drivers/net/ixgbe/base/ixgbe_osdep.h
+++ b/drivers/net/ixgbe/base/ixgbe_osdep.h
@@ -44,6 +44,7 @@
 #include <rte_cycles.h>
 #include <rte_log.h>
 #include <rte_byteorder.h>
+#include <rte_io.h>
 
 #include "../ixgbe_logs.h"
 #include "../ixgbe_bypass_defines.h"
@@ -123,16 +124,18 @@ typedef int		bool;
 
 #define prefetch(x) rte_prefetch0(x)
 
-#define IXGBE_PCI_REG(reg) (*((volatile uint32_t *)(reg)))
+#define IXGBE_PCI_REG(reg) rte_read32(reg)
 
 static inline uint32_t ixgbe_read_addr(volatile void* addr)
 {
 	return rte_le_to_cpu_32(IXGBE_PCI_REG(addr));
 }
 
-#define IXGBE_PCI_REG_WRITE(reg, value) do { \
-	IXGBE_PCI_REG((reg)) = (rte_cpu_to_le_32(value)); \
-} while(0)
+#define IXGBE_PCI_REG_WRITE(reg, value)			\
+	rte_write32((rte_cpu_to_le_32(value)), reg)
+
+#define IXGBE_PCI_REG_WRITE_RELAXED(reg, value)		\
+	rte_write32_relaxed((rte_cpu_to_le_32(value)), reg)
 
 #define IXGBE_PCI_REG_ADDR(hw, reg) \
 	((volatile uint32_t *)((char *)(hw)->hw_addr + (reg)))
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 5c119826a9..36f1c02003 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -326,7 +326,7 @@ tx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 
 	/* update tail pointer */
 	rte_wmb();
-	IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, txq->tx_tail);
+	IXGBE_PCI_REG_WRITE_RELAXED(txq->tdt_reg_addr, txq->tx_tail);
 
 	return nb_pkts;
 }
@@ -904,7 +904,7 @@ end_of_tx:
 	PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u",
 		   (unsigned) txq->port_id, (unsigned) txq->queue_id,
 		   (unsigned) tx_id, (unsigned) nb_tx);
-	IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, tx_id);
+	IXGBE_PCI_REG_WRITE_RELAXED(txq->tdt_reg_addr, tx_id);
 	txq->tx_tail = tx_id;
 
 	return nb_tx;
@@ -1639,7 +1639,8 @@ rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 
 		/* update tail pointer */
 		rte_wmb();
-		IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, cur_free_trigger);
+		IXGBE_PCI_REG_WRITE_RELAXED(rxq->rdt_reg_addr,
+					    cur_free_trigger);
 	}
 
 	if (rxq->rx_tail >= rxq->nb_rx_desc)
@@ -2043,8 +2044,8 @@ next_desc:
 
 			if (!ixgbe_rx_alloc_bufs(rxq, false)) {
 				rte_wmb();
-				IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr,
-						    next_rdt);
+				IXGBE_PCI_REG_WRITE_RELAXED(rxq->rdt_reg_addr,
+							    next_rdt);
 				nb_hold -= rxq->rx_free_thresh;
 			} else {
 				PMD_RX_LOG(DEBUG, "RX bulk alloc failed "
@@ -2215,7 +2216,7 @@ next_desc:
 			   rxq->port_id, rxq->queue_id, rx_id, nb_hold, nb_rx);
 
 		rte_wmb();
-		IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, prev_id);
+		IXGBE_PCI_REG_WRITE_RELAXED(rxq->rdt_reg_addr, prev_id);
 		nb_hold = 0;
 	}