442 lines
14 KiB
C
442 lines
14 KiB
C
/*
|
|
* drivers/net/ethernet/mellanox/mlxsw/item.h
|
|
* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
|
|
* Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
|
|
* Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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.
|
|
* 3. Neither the names of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* 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 _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 */
|
|
unsigned 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(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 u16 __mlxsw_item_get16(char *buf, 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, 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(char *buf, 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, 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(char *buf, 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, 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(char *buf, char *dst,
|
|
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,
|
|
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 u16
|
|
__mlxsw_item_bit_array_offset(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(char *buf, 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, 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_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(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(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(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(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(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(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(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); \
|
|
}
|
|
|
|
#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(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); \
|
|
}
|
|
|
|
#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(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
|