From: Satha Rao <skoteshwar@caviumnetworks.com>
To: <helin.zhang@intel.com>
Cc: <jingjing.wu@intel.com>, <jerin.jacob@caviumnetworks.com>,
<jianbo.liu@linaro.org>, <dev@dpdk.org>,
Satha Rao <skoteshwar@caviumnetworks.com>
Subject: [dpdk-dev] [PATCH v2] i40e: Fix eth_i40e_dev_init sequence on ThunderX
Date: Fri, 18 Nov 2016 04:52:13 -0800 [thread overview]
Message-ID: <1479473533-9393-1-git-send-email-skoteshwar@caviumnetworks.com> (raw)
i40e_asq_send_command: rd32 & wr32 under ThunderX gives unpredictable
results. To solve this include rte memory barriers
Signed-off-by: Satha Rao <skoteshwar@caviumnetworks.com>
---
drivers/net/i40e/base/i40e_osdep.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/net/i40e/base/i40e_osdep.h b/drivers/net/i40e/base/i40e_osdep.h
index 38e7ba5..ffa3160 100644
--- a/drivers/net/i40e/base/i40e_osdep.h
+++ b/drivers/net/i40e/base/i40e_osdep.h
@@ -158,7 +158,13 @@ do { \
((volatile uint32_t *)((char *)(a)->hw_addr + (reg)))
static inline uint32_t i40e_read_addr(volatile void *addr)
{
+#if defined(RTE_ARCH_ARM64)
+ uint32_t val = rte_le_to_cpu_32(I40E_PCI_REG(addr));
+ rte_rmb();
+ return val;
+#else
return rte_le_to_cpu_32(I40E_PCI_REG(addr));
+#endif
}
#define I40E_PCI_REG_WRITE(reg, value) \
do { I40E_PCI_REG((reg)) = rte_cpu_to_le_32(value); } while (0)
@@ -171,8 +177,16 @@ static inline uint32_t i40e_read_addr(volatile void *addr)
I40E_PCI_REG_WRITE(I40E_PCI_REG_ADDR((hw), (reg)), (value))
#define rd32(a, reg) i40e_read_addr(I40E_PCI_REG_ADDR((a), (reg)))
+#if defined(RTE_ARCH_ARM64)
+#define wr32(a, reg, value) \
+ do { \
+ I40E_PCI_REG_WRITE(I40E_PCI_REG_ADDR((a), (reg)), (value)); \
+ rte_wmb(); \
+ } while (0)
+#else
#define wr32(a, reg, value) \
I40E_PCI_REG_WRITE(I40E_PCI_REG_ADDR((a), (reg)), (value))
+#endif
#define flush(a) i40e_read_addr(I40E_PCI_REG_ADDR((a), (I40E_GLGEN_STAT)))
#define ARRAY_SIZE(arr) (sizeof(arr)/sizeof(arr[0]))
--
2.7.4
next reply other threads:[~2016-11-18 12:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-18 12:52 Satha Rao [this message]
2016-11-18 15:00 ` Bruce Richardson
2016-11-20 23:21 ` Ananyev, Konstantin
2016-11-21 22:16 ` Jerin Jacob
2016-11-22 13:46 ` Bruce Richardson
2016-11-22 18:49 ` Jerin Jacob
2016-11-30 17:52 ` Ananyev, Konstantin
2016-11-30 20:54 ` Jerin Jacob
2016-12-01 11:38 ` Ananyev, Konstantin
2017-02-07 14:33 ` Ferruh Yigit
[not found] <mailman.4.1479684107.2722.dev@dpdk.org>
2016-11-30 1:23 ` Asok Tiyyagura
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