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/*-
* BSD LICENSE
*
* Copyright 2012-2015 6WIND S.A.
* Copyright 2012 Mellanox.
*
* 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 6WIND S.A. 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 RTE_PMD_MLX4_H_
#define RTE_PMD_MLX4_H_
#include <stddef.h>
#include <stdint.h>
#include <limits.h>
/*
* Maximum number of simultaneous MAC addresses supported.
*
* According to ConnectX's Programmer Reference Manual:
* The L2 Address Match is implemented by comparing a MAC/VLAN combination
* of 128 MAC addresses and 127 VLAN values, comprising 128x127 possible
* L2 addresses.
*/
#define MLX4_MAX_MAC_ADDRESSES 128
/* Maximum number of simultaneous VLAN filters supported. See above. */
#define MLX4_MAX_VLAN_IDS 127
/* Request send completion once in every 64 sends, might be less. */
#define MLX4_PMD_TX_PER_COMP_REQ 64
/* Maximum number of Scatter/Gather Elements per Work Request. */
#ifndef MLX4_PMD_SGE_WR_N
#define MLX4_PMD_SGE_WR_N 4
#endif
/* Maximum size for inline data. */
#ifndef MLX4_PMD_MAX_INLINE
#define MLX4_PMD_MAX_INLINE 0
#endif
/*
* Maximum number of cached Memory Pools (MPs) per TX queue. Each RTE MP
* from which buffers are to be transmitted will have to be mapped by this
* driver to their own Memory Region (MR). This is a slow operation.
*
* This value is always 1 for RX queues.
*/
#ifndef MLX4_PMD_TX_MP_CACHE
#define MLX4_PMD_TX_MP_CACHE 8
#endif
/*
* If defined, only use software counters. The PMD will never ask the hardware
* for these, and many of them won't be available.
*/
#ifndef MLX4_PMD_SOFT_COUNTERS
#define MLX4_PMD_SOFT_COUNTERS 1
#endif
/* Alarm timeout. */
#define MLX4_ALARM_TIMEOUT_US 100000
enum {
PCI_VENDOR_ID_MELLANOX = 0x15b3,
};
enum {
PCI_DEVICE_ID_MELLANOX_CONNECTX3 = 0x1003,
PCI_DEVICE_ID_MELLANOX_CONNECTX3VF = 0x1004,
PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO = 0x1007,
};
#define MLX4_DRIVER_NAME "librte_pmd_mlx4"
/* Bit-field manipulation. */
#define BITFIELD_DECLARE(bf, type, size) \
type bf[(((size_t)(size) / (sizeof(type) * CHAR_BIT)) + \
!!((size_t)(size) % (sizeof(type) * CHAR_BIT)))]
#define BITFIELD_DEFINE(bf, type, size) \
BITFIELD_DECLARE((bf), type, (size)) = { 0 }
#define BITFIELD_SET(bf, b) \
(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)), \
(void)((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] |= \
((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT)))))
#define BITFIELD_RESET(bf, b) \
(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)), \
(void)((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] &= \
~((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT)))))
#define BITFIELD_ISSET(bf, b) \
(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)), \
!!(((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] & \
((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT))))))
/* Number of elements in array. */
#define elemof(a) (sizeof(a) / sizeof((a)[0]))
/* Cast pointer p to structure member m to its parent structure of type t. */
#define containerof(p, t, m) ((t *)((uint8_t *)(p) - offsetof(t, m)))
/* Branch prediction helpers. */
#ifndef likely
#define likely(c) __builtin_expect(!!(c), 1)
#endif
#ifndef unlikely
#define unlikely(c) __builtin_expect(!!(c), 0)
#endif
/* Debugging */
#ifndef NDEBUG
#include <stdio.h>
#define DEBUG__(m, ...) \
(fprintf(stderr, "%s:%d: %s(): " m "%c", \
__FILE__, __LINE__, __func__, __VA_ARGS__), \
fflush(stderr), \
(void)0)
/*
* Save/restore errno around DEBUG__().
* XXX somewhat undefined behavior, but works.
*/
#define DEBUG_(...) \
(errno = ((int []){ \
*(volatile int *)&errno, \
(DEBUG__(__VA_ARGS__), 0) \
})[0])
#define DEBUG(...) DEBUG_(__VA_ARGS__, '\n')
#define claim_zero(...) assert((__VA_ARGS__) == 0)
#define claim_nonzero(...) assert((__VA_ARGS__) != 0)
#define claim_positive(...) assert((__VA_ARGS__) >= 0)
#else /* NDEBUG */
/* No-ops. */
#define DEBUG(...) (void)0
#define claim_zero(...) (__VA_ARGS__)
#define claim_nonzero(...) (__VA_ARGS__)
#define claim_positive(...) (__VA_ARGS__)
#endif /* NDEBUG */
#endif /* RTE_PMD_MLX4_H_ */
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