[dpdk-dev] [PATCH v2 23/29] net/i40e: use eal I/O device memory read/write API
Jerin Jacob
jerin.jacob at caviumnetworks.com
Tue Dec 27 10:49:29 CET 2016
From: Santosh Shukla <santosh.shukla at caviumnetworks.com>
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 at intel.com>
CC: Jingjing Wu <jingjing.wu at intel.com>
Signed-off-by: Santosh Shukla <santosh.shukla at caviumnetworks.com>
Signed-off-by: Satha Rao <skoteshwar at caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
---
drivers/net/i40e/base/i40e_osdep.h | 10 +++++++---
drivers/net/i40e/i40e_rxtx.c | 4 ++--
2 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/net/i40e/base/i40e_osdep.h b/drivers/net/i40e/base/i40e_osdep.h
index 38e7ba5..c57ecde 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 7ae7d9f..5c41a90 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -1228,7 +1228,7 @@ i40e_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
(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;
@@ -1380,7 +1380,7 @@ 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;
}
--
2.5.5
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