[PATCH v7 2/8] net/gve/base: add OS specific implementation

[Junfeng Guo <junfeng.guo@intel.com>]

Add some MACRO definitions and memory operations which are specific
for DPDK.

Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
---
 drivers/net/gve/base/gve_adminq.h   |   2 +
 drivers/net/gve/base/gve_desc.h     |   2 +
 drivers/net/gve/base/gve_desc_dqo.h |   2 +
 drivers/net/gve/base/gve_osdep.h    | 159 ++++++++++++++++++++++++++++
 drivers/net/gve/base/gve_register.h |   2 +
 5 files changed, 167 insertions(+)
 create mode 100644 drivers/net/gve/base/gve_osdep.h

diff --git a/drivers/net/gve/base/gve_adminq.h b/drivers/net/gve/base/gve_adminq.h
index b2422d7dc8..05550119de 100644
--- a/drivers/net/gve/base/gve_adminq.h
+++ b/drivers/net/gve/base/gve_adminq.h
@@ -6,6 +6,8 @@
 #ifndef _GVE_ADMINQ_H
 #define _GVE_ADMINQ_H
 
+#include "gve_osdep.h"
+
 /* Admin queue opcodes */
 enum gve_adminq_opcodes {
 	GVE_ADMINQ_DESCRIBE_DEVICE		= 0x1,
diff --git a/drivers/net/gve/base/gve_desc.h b/drivers/net/gve/base/gve_desc.h
index e0bbadcfd4..006b36442f 100644
--- a/drivers/net/gve/base/gve_desc.h
+++ b/drivers/net/gve/base/gve_desc.h
@@ -8,6 +8,8 @@
 #ifndef _GVE_DESC_H_
 #define _GVE_DESC_H_
 
+#include "gve_osdep.h"
+
 /* A note on seg_addrs
  *
  * Base addresses encoded in seg_addr are not assumed to be physical
diff --git a/drivers/net/gve/base/gve_desc_dqo.h b/drivers/net/gve/base/gve_desc_dqo.h
index 9965f190d1..ee1afdecb8 100644
--- a/drivers/net/gve/base/gve_desc_dqo.h
+++ b/drivers/net/gve/base/gve_desc_dqo.h
@@ -8,6 +8,8 @@
 #ifndef _GVE_DESC_DQO_H_
 #define _GVE_DESC_DQO_H_
 
+#include "gve_osdep.h"
+
 #define GVE_TX_MAX_HDR_SIZE_DQO 255
 #define GVE_TX_MIN_TSO_MSS_DQO 88
 
diff --git a/drivers/net/gve/base/gve_osdep.h b/drivers/net/gve/base/gve_osdep.h
new file mode 100644
index 0000000000..7cb73002f4
--- /dev/null
+++ b/drivers/net/gve/base/gve_osdep.h
@@ -0,0 +1,159 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2022 Intel Corporation
+ */
+
+#ifndef _GVE_OSDEP_H_
+#define _GVE_OSDEP_H_
+
+#include <string.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include <rte_bitops.h>
+#include <rte_byteorder.h>
+#include <rte_common.h>
+#include <rte_ether.h>
+#include <rte_io.h>
+#include <rte_log.h>
+#include <rte_malloc.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+
+#include "../gve_logs.h"
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef rte_be16_t __sum16;
+
+typedef rte_be16_t __be16;
+typedef rte_be32_t __be32;
+typedef rte_be64_t __be64;
+
+typedef rte_iova_t dma_addr_t;
+
+#define ETH_MIN_MTU	RTE_ETHER_MIN_MTU
+#define ETH_ALEN	RTE_ETHER_ADDR_LEN
+
+#ifndef PAGE_SHIFT
+#define PAGE_SHIFT	12
+#endif
+#ifndef PAGE_SIZE
+#define PAGE_SIZE	(1UL << PAGE_SHIFT)
+#endif
+
+#define BIT(nr)		RTE_BIT32(nr)
+
+#define be16_to_cpu(x) rte_be_to_cpu_16(x)
+#define be32_to_cpu(x) rte_be_to_cpu_32(x)
+#define be64_to_cpu(x) rte_be_to_cpu_64(x)
+
+#define cpu_to_be16(x) rte_cpu_to_be_16(x)
+#define cpu_to_be32(x) rte_cpu_to_be_32(x)
+#define cpu_to_be64(x) rte_cpu_to_be_64(x)
+
+#define READ_ONCE32(x) rte_read32(&(x))
+
+#ifndef ____cacheline_aligned
+#define ____cacheline_aligned	__rte_cache_aligned
+#endif
+#ifndef __packed
+#define __packed		__rte_packed
+#endif
+#define __iomem
+
+#define msleep(ms)		rte_delay_ms(ms)
+
+/* These macros are used to generate compilation errors if a struct/union
+ * is not exactly the correct length. It gives a divide by zero error if
+ * the struct/union is not of the correct size, otherwise it creates an
+ * enum that is never used.
+ */
+#define GVE_CHECK_STRUCT_LEN(n, X) enum gve_static_assert_enum_##X \
+	{ gve_static_assert_##X = (n) / ((sizeof(struct X) == (n)) ? 1 : 0) }
+#define GVE_CHECK_UNION_LEN(n, X) enum gve_static_asset_enum_##X \
+	{ gve_static_assert_##X = (n) / ((sizeof(union X) == (n)) ? 1 : 0) }
+
+static __rte_always_inline u8
+readb(volatile void *addr)
+{
+	return rte_read8(addr);
+}
+
+static __rte_always_inline void
+writeb(u8 value, volatile void *addr)
+{
+	rte_write8(value, addr);
+}
+
+static __rte_always_inline void
+writel(u32 value, volatile void *addr)
+{
+	rte_write32(value, addr);
+}
+
+static __rte_always_inline u32
+ioread32be(const volatile void *addr)
+{
+	return rte_be_to_cpu_32(rte_read32(addr));
+}
+
+static __rte_always_inline void
+iowrite32be(u32 value, volatile void *addr)
+{
+	writel(rte_cpu_to_be_32(value), addr);
+}
+
+/* DMA memory allocation tracking */
+struct gve_dma_mem {
+	void *va;
+	rte_iova_t pa;
+	uint32_t size;
+	const void *zone;
+};
+
+static inline void *
+gve_alloc_dma_mem(struct gve_dma_mem *mem, u64 size)
+{
+	static uint16_t gve_dma_memzone_id;
+	const struct rte_memzone *mz = NULL;
+	char z_name[RTE_MEMZONE_NAMESIZE];
+
+	if (!mem)
+		return NULL;
+
+	snprintf(z_name, sizeof(z_name), "gve_dma_%u",
+		 __atomic_fetch_add(&gve_dma_memzone_id, 1, __ATOMIC_RELAXED));
+	mz = rte_memzone_reserve_aligned(z_name, size, SOCKET_ID_ANY,
+					 RTE_MEMZONE_IOVA_CONTIG,
+					 PAGE_SIZE);
+	if (!mz)
+		return NULL;
+
+	mem->size = size;
+	mem->va = mz->addr;
+	mem->pa = mz->iova;
+	mem->zone = mz;
+	PMD_DRV_LOG(DEBUG, "memzone %s is allocated", mz->name);
+
+	return mem->va;
+}
+
+static inline void
+gve_free_dma_mem(struct gve_dma_mem *mem)
+{
+	PMD_DRV_LOG(DEBUG, "memzone %s to be freed",
+		    ((const struct rte_memzone *)mem->zone)->name);
+
+	rte_memzone_free(mem->zone);
+	mem->zone = NULL;
+	mem->va = NULL;
+	mem->pa = 0;
+}
+
+#endif /* _GVE_OSDEP_H_ */
diff --git a/drivers/net/gve/base/gve_register.h b/drivers/net/gve/base/gve_register.h
index bf7f102cde..c674167f31 100644
--- a/drivers/net/gve/base/gve_register.h
+++ b/drivers/net/gve/base/gve_register.h
@@ -6,6 +6,8 @@
 #ifndef _GVE_REGISTER_H_
 #define _GVE_REGISTER_H_
 
+#include "gve_osdep.h"
+
 /* Fixed Configuration Registers */
 struct gve_registers {
 	__be32	device_status;
-- 
2.34.1