Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 509 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/item.h b/drivers/net/ethernet/mellanox/mlxsw/item.h
new file mode 100644
index 000000000..e92cadc98
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlxsw/item.h
@@ -0,0 +1,509 @@
+/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
+/* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */
+
+#ifndef _MLXSW_ITEM_H
+#define _MLXSW_ITEM_H
+
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/bitops.h>
+
+struct mlxsw_item {
+	unsigned short	offset;		/* bytes in container */
+	short		step;		/* step in bytes for indexed items */
+	unsigned short	in_step_offset; /* offset within one step */
+	unsigned char	shift;		/* shift in bits */
+	unsigned char	element_size;	/* size of element in bit array */
+	bool		no_real_shift;
+	union {
+		unsigned char	bits;
+		unsigned short	bytes;
+	} size;
+	const char	*name;
+};
+
+static inline unsigned int
+__mlxsw_item_offset(const struct mlxsw_item *item, unsigned short index,
+		    size_t typesize)
+{
+	BUG_ON(index && !item->step);
+	if (item->offset % typesize != 0 ||
+	    item->step % typesize != 0 ||
+	    item->in_step_offset % typesize != 0) {
+		pr_err("mlxsw: item bug (name=%s,offset=%x,step=%x,in_step_offset=%x,typesize=%zx)\n",
+		       item->name, item->offset, item->step,
+		       item->in_step_offset, typesize);
+		BUG();
+	}
+
+	return ((item->offset + item->step * index + item->in_step_offset) /
+		typesize);
+}
+
+static inline u8 __mlxsw_item_get8(const char *buf,
+				   const struct mlxsw_item *item,
+				   unsigned short index)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index, sizeof(u8));
+	u8 *b = (u8 *) buf;
+	u8 tmp;
+
+	tmp = b[offset];
+	tmp >>= item->shift;
+	tmp &= GENMASK(item->size.bits - 1, 0);
+	if (item->no_real_shift)
+		tmp <<= item->shift;
+	return tmp;
+}
+
+static inline void __mlxsw_item_set8(char *buf, const struct mlxsw_item *item,
+				     unsigned short index, u8 val)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index,
+						  sizeof(u8));
+	u8 *b = (u8 *) buf;
+	u8 mask = GENMASK(item->size.bits - 1, 0) << item->shift;
+	u8 tmp;
+
+	if (!item->no_real_shift)
+		val <<= item->shift;
+	val &= mask;
+	tmp = b[offset];
+	tmp &= ~mask;
+	tmp |= val;
+	b[offset] = tmp;
+}
+
+static inline u16 __mlxsw_item_get16(const char *buf,
+				     const struct mlxsw_item *item,
+				     unsigned short index)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index, sizeof(u16));
+	__be16 *b = (__be16 *) buf;
+	u16 tmp;
+
+	tmp = be16_to_cpu(b[offset]);
+	tmp >>= item->shift;
+	tmp &= GENMASK(item->size.bits - 1, 0);
+	if (item->no_real_shift)
+		tmp <<= item->shift;
+	return tmp;
+}
+
+static inline void __mlxsw_item_set16(char *buf, const struct mlxsw_item *item,
+				      unsigned short index, u16 val)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index,
+						  sizeof(u16));
+	__be16 *b = (__be16 *) buf;
+	u16 mask = GENMASK(item->size.bits - 1, 0) << item->shift;
+	u16 tmp;
+
+	if (!item->no_real_shift)
+		val <<= item->shift;
+	val &= mask;
+	tmp = be16_to_cpu(b[offset]);
+	tmp &= ~mask;
+	tmp |= val;
+	b[offset] = cpu_to_be16(tmp);
+}
+
+static inline u32 __mlxsw_item_get32(const char *buf,
+				     const struct mlxsw_item *item,
+				     unsigned short index)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index, sizeof(u32));
+	__be32 *b = (__be32 *) buf;
+	u32 tmp;
+
+	tmp = be32_to_cpu(b[offset]);
+	tmp >>= item->shift;
+	tmp &= GENMASK(item->size.bits - 1, 0);
+	if (item->no_real_shift)
+		tmp <<= item->shift;
+	return tmp;
+}
+
+static inline void __mlxsw_item_set32(char *buf, const struct mlxsw_item *item,
+				      unsigned short index, u32 val)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index,
+						  sizeof(u32));
+	__be32 *b = (__be32 *) buf;
+	u32 mask = GENMASK(item->size.bits - 1, 0) << item->shift;
+	u32 tmp;
+
+	if (!item->no_real_shift)
+		val <<= item->shift;
+	val &= mask;
+	tmp = be32_to_cpu(b[offset]);
+	tmp &= ~mask;
+	tmp |= val;
+	b[offset] = cpu_to_be32(tmp);
+}
+
+static inline u64 __mlxsw_item_get64(const char *buf,
+				     const struct mlxsw_item *item,
+				     unsigned short index)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index, sizeof(u64));
+	__be64 *b = (__be64 *) buf;
+	u64 tmp;
+
+	tmp = be64_to_cpu(b[offset]);
+	tmp >>= item->shift;
+	tmp &= GENMASK_ULL(item->size.bits - 1, 0);
+	if (item->no_real_shift)
+		tmp <<= item->shift;
+	return tmp;
+}
+
+static inline void __mlxsw_item_set64(char *buf, const struct mlxsw_item *item,
+				      unsigned short index, u64 val)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index, sizeof(u64));
+	__be64 *b = (__be64 *) buf;
+	u64 mask = GENMASK_ULL(item->size.bits - 1, 0) << item->shift;
+	u64 tmp;
+
+	if (!item->no_real_shift)
+		val <<= item->shift;
+	val &= mask;
+	tmp = be64_to_cpu(b[offset]);
+	tmp &= ~mask;
+	tmp |= val;
+	b[offset] = cpu_to_be64(tmp);
+}
+
+static inline void __mlxsw_item_memcpy_from(const char *buf, char *dst,
+					    const struct mlxsw_item *item,
+					    unsigned short index)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index, sizeof(char));
+
+	memcpy(dst, &buf[offset], item->size.bytes);
+}
+
+static inline void __mlxsw_item_memcpy_to(char *buf, const char *src,
+					  const struct mlxsw_item *item,
+					  unsigned short index)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index, sizeof(char));
+
+	memcpy(&buf[offset], src, item->size.bytes);
+}
+
+static inline char *__mlxsw_item_data(char *buf, const struct mlxsw_item *item,
+				      unsigned short index)
+{
+	unsigned int offset = __mlxsw_item_offset(item, index, sizeof(char));
+
+	return &buf[offset];
+}
+
+static inline u16
+__mlxsw_item_bit_array_offset(const struct mlxsw_item *item,
+			      u16 index, u8 *shift)
+{
+	u16 max_index, be_index;
+	u16 offset;		/* byte offset inside the array */
+	u8 in_byte_index;
+
+	BUG_ON(index && !item->element_size);
+	if (item->offset % sizeof(u32) != 0 ||
+	    BITS_PER_BYTE % item->element_size != 0) {
+		pr_err("mlxsw: item bug (name=%s,offset=%x,element_size=%x)\n",
+		       item->name, item->offset, item->element_size);
+		BUG();
+	}
+
+	max_index = (item->size.bytes << 3) / item->element_size - 1;
+	be_index = max_index - index;
+	offset = be_index * item->element_size >> 3;
+	in_byte_index  = index % (BITS_PER_BYTE / item->element_size);
+	*shift = in_byte_index * item->element_size;
+
+	return item->offset + offset;
+}
+
+static inline u8 __mlxsw_item_bit_array_get(const char *buf,
+					    const struct mlxsw_item *item,
+					    u16 index)
+{
+	u8 shift, tmp;
+	u16 offset = __mlxsw_item_bit_array_offset(item, index, &shift);
+
+	tmp = buf[offset];
+	tmp >>= shift;
+	tmp &= GENMASK(item->element_size - 1, 0);
+	return tmp;
+}
+
+static inline void __mlxsw_item_bit_array_set(char *buf,
+					      const struct mlxsw_item *item,
+					      u16 index, u8 val)
+{
+	u8 shift, tmp;
+	u16 offset = __mlxsw_item_bit_array_offset(item, index, &shift);
+	u8 mask = GENMASK(item->element_size - 1, 0) << shift;
+
+	val <<= shift;
+	val &= mask;
+	tmp = buf[offset];
+	tmp &= ~mask;
+	tmp |= val;
+	buf[offset] = tmp;
+}
+
+#define __ITEM_NAME(_type, _cname, _iname)					\
+	mlxsw_##_type##_##_cname##_##_iname##_item
+
+/* _type: cmd_mbox, reg, etc.
+ * _cname: containter name (e.g. command name, register name)
+ * _iname: item name within the container
+ */
+
+#define MLXSW_ITEM8(_type, _cname, _iname, _offset, _shift, _sizebits)		\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.shift = _shift,							\
+	.size = {.bits = _sizebits,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline u8 mlxsw_##_type##_##_cname##_##_iname##_get(const char *buf)	\
+{										\
+	return __mlxsw_item_get8(buf, &__ITEM_NAME(_type, _cname, _iname), 0);	\
+}										\
+static inline void mlxsw_##_type##_##_cname##_##_iname##_set(char *buf, u8 val)\
+{										\
+	__mlxsw_item_set8(buf, &__ITEM_NAME(_type, _cname, _iname), 0, val);	\
+}
+
+#define MLXSW_ITEM8_INDEXED(_type, _cname, _iname, _offset, _shift, _sizebits,	\
+			    _step, _instepoffset, _norealshift)			\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.step = _step,								\
+	.in_step_offset = _instepoffset,					\
+	.shift = _shift,							\
+	.no_real_shift = _norealshift,						\
+	.size = {.bits = _sizebits,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline u8								\
+mlxsw_##_type##_##_cname##_##_iname##_get(const char *buf, unsigned short index)\
+{										\
+	return __mlxsw_item_get8(buf, &__ITEM_NAME(_type, _cname, _iname),	\
+				 index);					\
+}										\
+static inline void								\
+mlxsw_##_type##_##_cname##_##_iname##_set(char *buf, unsigned short index,	\
+					  u8 val)				\
+{										\
+	__mlxsw_item_set8(buf, &__ITEM_NAME(_type, _cname, _iname),		\
+			  index, val);						\
+}
+
+#define MLXSW_ITEM16(_type, _cname, _iname, _offset, _shift, _sizebits)		\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.shift = _shift,							\
+	.size = {.bits = _sizebits,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline u16 mlxsw_##_type##_##_cname##_##_iname##_get(const char *buf)	\
+{										\
+	return __mlxsw_item_get16(buf, &__ITEM_NAME(_type, _cname, _iname), 0);	\
+}										\
+static inline void mlxsw_##_type##_##_cname##_##_iname##_set(char *buf, u16 val)\
+{										\
+	__mlxsw_item_set16(buf, &__ITEM_NAME(_type, _cname, _iname), 0, val);	\
+}
+
+#define MLXSW_ITEM16_INDEXED(_type, _cname, _iname, _offset, _shift, _sizebits,	\
+			     _step, _instepoffset, _norealshift)		\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.step = _step,								\
+	.in_step_offset = _instepoffset,					\
+	.shift = _shift,							\
+	.no_real_shift = _norealshift,						\
+	.size = {.bits = _sizebits,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline u16								\
+mlxsw_##_type##_##_cname##_##_iname##_get(const char *buf, unsigned short index)\
+{										\
+	return __mlxsw_item_get16(buf, &__ITEM_NAME(_type, _cname, _iname),	\
+				  index);					\
+}										\
+static inline void								\
+mlxsw_##_type##_##_cname##_##_iname##_set(char *buf, unsigned short index,	\
+					  u16 val)				\
+{										\
+	__mlxsw_item_set16(buf, &__ITEM_NAME(_type, _cname, _iname),		\
+			   index, val);						\
+}
+
+#define MLXSW_ITEM32(_type, _cname, _iname, _offset, _shift, _sizebits)		\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.shift = _shift,							\
+	.size = {.bits = _sizebits,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline u32 mlxsw_##_type##_##_cname##_##_iname##_get(const char *buf)	\
+{										\
+	return __mlxsw_item_get32(buf, &__ITEM_NAME(_type, _cname, _iname), 0);	\
+}										\
+static inline void mlxsw_##_type##_##_cname##_##_iname##_set(char *buf, u32 val)\
+{										\
+	__mlxsw_item_set32(buf, &__ITEM_NAME(_type, _cname, _iname), 0, val);	\
+}
+
+#define MLXSW_ITEM32_INDEXED(_type, _cname, _iname, _offset, _shift, _sizebits,	\
+			     _step, _instepoffset, _norealshift)		\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.step = _step,								\
+	.in_step_offset = _instepoffset,					\
+	.shift = _shift,							\
+	.no_real_shift = _norealshift,						\
+	.size = {.bits = _sizebits,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline u32								\
+mlxsw_##_type##_##_cname##_##_iname##_get(const char *buf, unsigned short index)\
+{										\
+	return __mlxsw_item_get32(buf, &__ITEM_NAME(_type, _cname, _iname),	\
+				  index);					\
+}										\
+static inline void								\
+mlxsw_##_type##_##_cname##_##_iname##_set(char *buf, unsigned short index,	\
+					  u32 val)				\
+{										\
+	__mlxsw_item_set32(buf, &__ITEM_NAME(_type, _cname, _iname),		\
+			   index, val);						\
+}
+
+#define MLXSW_ITEM64(_type, _cname, _iname, _offset, _shift, _sizebits)		\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.shift = _shift,							\
+	.size = {.bits = _sizebits,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline u64 mlxsw_##_type##_##_cname##_##_iname##_get(const char *buf)	\
+{										\
+	return __mlxsw_item_get64(buf, &__ITEM_NAME(_type, _cname, _iname), 0);	\
+}										\
+static inline void mlxsw_##_type##_##_cname##_##_iname##_set(char *buf, u64 val)\
+{										\
+	__mlxsw_item_set64(buf, &__ITEM_NAME(_type, _cname, _iname), 0,	val);	\
+}
+
+#define MLXSW_ITEM64_INDEXED(_type, _cname, _iname, _offset, _shift,		\
+			     _sizebits, _step, _instepoffset, _norealshift)	\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.step = _step,								\
+	.in_step_offset = _instepoffset,					\
+	.shift = _shift,							\
+	.no_real_shift = _norealshift,						\
+	.size = {.bits = _sizebits,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline u64								\
+mlxsw_##_type##_##_cname##_##_iname##_get(const char *buf, unsigned short index)\
+{										\
+	return __mlxsw_item_get64(buf, &__ITEM_NAME(_type, _cname, _iname),	\
+				  index);					\
+}										\
+static inline void								\
+mlxsw_##_type##_##_cname##_##_iname##_set(char *buf, unsigned short index,	\
+					  u64 val)				\
+{										\
+	__mlxsw_item_set64(buf, &__ITEM_NAME(_type, _cname, _iname),		\
+			   index, val);						\
+}
+
+#define MLXSW_ITEM_BUF(_type, _cname, _iname, _offset, _sizebytes)		\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.size = {.bytes = _sizebytes,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline void								\
+mlxsw_##_type##_##_cname##_##_iname##_memcpy_from(const char *buf, char *dst)	\
+{										\
+	__mlxsw_item_memcpy_from(buf, dst,					\
+				 &__ITEM_NAME(_type, _cname, _iname), 0);	\
+}										\
+static inline void								\
+mlxsw_##_type##_##_cname##_##_iname##_memcpy_to(char *buf, const char *src)	\
+{										\
+	__mlxsw_item_memcpy_to(buf, src,					\
+			       &__ITEM_NAME(_type, _cname, _iname), 0);		\
+}										\
+static inline char *								\
+mlxsw_##_type##_##_cname##_##_iname##_data(char *buf)				\
+{										\
+	return __mlxsw_item_data(buf, &__ITEM_NAME(_type, _cname, _iname), 0);	\
+}
+
+#define MLXSW_ITEM_BUF_INDEXED(_type, _cname, _iname, _offset, _sizebytes,	\
+			       _step, _instepoffset)				\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.step = _step,								\
+	.in_step_offset = _instepoffset,					\
+	.size = {.bytes = _sizebytes,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline void								\
+mlxsw_##_type##_##_cname##_##_iname##_memcpy_from(const char *buf,		\
+						  unsigned short index,		\
+						  char *dst)			\
+{										\
+	__mlxsw_item_memcpy_from(buf, dst,					\
+				 &__ITEM_NAME(_type, _cname, _iname), index);	\
+}										\
+static inline void								\
+mlxsw_##_type##_##_cname##_##_iname##_memcpy_to(char *buf,			\
+						unsigned short index,		\
+						const char *src)		\
+{										\
+	__mlxsw_item_memcpy_to(buf, src,					\
+			       &__ITEM_NAME(_type, _cname, _iname), index);	\
+}										\
+static inline char *								\
+mlxsw_##_type##_##_cname##_##_iname##_data(char *buf, unsigned short index)	\
+{										\
+	return __mlxsw_item_data(buf,						\
+				 &__ITEM_NAME(_type, _cname, _iname), index);	\
+}
+
+#define MLXSW_ITEM_BIT_ARRAY(_type, _cname, _iname, _offset, _sizebytes,	\
+			     _element_size)					\
+static struct mlxsw_item __ITEM_NAME(_type, _cname, _iname) = {			\
+	.offset = _offset,							\
+	.element_size = _element_size,						\
+	.size = {.bytes = _sizebytes,},						\
+	.name = #_type "_" #_cname "_" #_iname,					\
+};										\
+static inline u8								\
+mlxsw_##_type##_##_cname##_##_iname##_get(const char *buf, u16 index)		\
+{										\
+	return __mlxsw_item_bit_array_get(buf,					\
+					  &__ITEM_NAME(_type, _cname, _iname),	\
+					  index);				\
+}										\
+static inline void								\
+mlxsw_##_type##_##_cname##_##_iname##_set(char *buf, u16 index, u8 val)		\
+{										\
+	return __mlxsw_item_bit_array_set(buf,					\
+					  &__ITEM_NAME(_type, _cname, _iname),	\
+					  index, val);				\
+}										\
+
+#endif