[dpdk-dev] [PATCH v6 03/27] net/thunderx/base: implement DPDK based platform abstraction

[Jerin Jacob]

implement DPDK based platform abstraction for base code

Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
Signed-off-by: Maciej Czekaj <maciej.czekaj at caviumnetworks.com>
Signed-off-by: Kamil Rytarowski <Kamil.Rytarowski at caviumnetworks.com>
Signed-off-by: Zyta Szpak <zyta.szpak at semihalf.com>
Signed-off-by: Slawomir Rosek <slawomir.rosek at semihalf.com>
Signed-off-by: Radoslaw Biernacki <rad at semihalf.com>
---
 drivers/net/thunderx/base/nicvf_plat.h | 129 +++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 drivers/net/thunderx/base/nicvf_plat.h

diff --git a/drivers/net/thunderx/base/nicvf_plat.h b/drivers/net/thunderx/base/nicvf_plat.h
new file mode 100644
index 0000000..33fef08
--- /dev/null
+++ b/drivers/net/thunderx/base/nicvf_plat.h
@@ -0,0 +1,129 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright (C) Cavium networks Ltd. 2016.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Cavium networks nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _THUNDERX_NICVF_H
+#define _THUNDERX_NICVF_H
+
+/* Platform/OS/arch specific abstractions */
+
+/* log */
+#include <rte_log.h>
+#include "../nicvf_logs.h"
+
+#define nicvf_log_error(s, ...) PMD_DRV_LOG(ERR, s, ##__VA_ARGS__)
+
+#define nicvf_log_debug(s, ...) PMD_DRV_LOG(DEBUG, s, ##__VA_ARGS__)
+
+#define nicvf_mbox_log(s, ...) PMD_MBOX_LOG(DEBUG, s, ##__VA_ARGS__)
+
+#define nicvf_log(s, ...) fprintf(stderr, s, ##__VA_ARGS__)
+
+/* delay */
+#include <rte_cycles.h>
+#define nicvf_delay_us(x) rte_delay_us(x)
+
+/* barrier */
+#include <rte_atomic.h>
+#define nicvf_smp_wmb() rte_smp_wmb()
+#define nicvf_smp_rmb() rte_smp_rmb()
+
+/* utils */
+#include <rte_common.h>
+#define nicvf_min(x, y) RTE_MIN(x, y)
+
+/* byte order */
+#include <rte_byteorder.h>
+#define nicvf_cpu_to_be_64(x) rte_cpu_to_be_64(x)
+#define nicvf_be_to_cpu_64(x) rte_be_to_cpu_64(x)
+
+/* Constants */
+#include <rte_ether.h>
+#define NICVF_MAC_ADDR_SIZE ETHER_ADDR_LEN
+
+/* ARM64 specific functions */
+#if defined(RTE_ARCH_ARM64)
+#define nicvf_prefetch_store_keep(_ptr) ({\
+	asm volatile("prfm pstl1keep, %a0\n" : : "p" (_ptr)); })
+
+static inline void __attribute__((always_inline))
+nicvf_addr_write(uintptr_t addr, uint64_t val)
+{
+	asm volatile(
+		    "str %x[val], [%x[addr]]"
+		    :
+		    : [val] "r" (val), [addr] "r" (addr));
+}
+
+static inline uint64_t __attribute__((always_inline))
+nicvf_addr_read(uintptr_t addr)
+{
+	uint64_t val;
+
+	asm volatile(
+		    "ldr %x[val], [%x[addr]]"
+		    : [val] "=r" (val)
+		    : [addr] "r" (addr));
+	return val;
+}
+
+#define NICVF_LOAD_PAIR(reg1, reg2, addr) ({		\
+			asm volatile(			\
+			"ldp %x[x1], %x[x0], [%x[p1]]"	\
+			: [x1]"=r"(reg1), [x0]"=r"(reg2)\
+			: [p1]"r"(addr)			\
+			); })
+
+#else /* non optimized functions for building on non arm64 arch */
+
+#define nicvf_prefetch_store_keep(_ptr) do {} while (0)
+
+static inline void __attribute__((always_inline))
+nicvf_addr_write(uintptr_t addr, uint64_t val)
+{
+	*(volatile uint64_t *)addr = val;
+}
+
+static inline uint64_t __attribute__((always_inline))
+nicvf_addr_read(uintptr_t addr)
+{
+	return	*(volatile uint64_t *)addr;
+}
+
+#define NICVF_LOAD_PAIR(reg1, reg2, addr)		\
+do {							\
+	reg1 = nicvf_addr_read((uintptr_t)addr);	\
+	reg2 = nicvf_addr_read((uintptr_t)addr + 8);	\
+} while (0)
+
+#endif
+
+#endif /* _THUNDERX_NICVF_H */
-- 
2.5.5