linux/drivers/net/ethernet/mellanox/mlx4/crdump.c

/*
 * Copyright (c) 2018, Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     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.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "mlx4.h"

#define BAD_ACCESS …
#define HEALTH_BUFFER_SIZE …
#define CR_ENABLE_BIT …
#define CR_ENABLE_BIT_OFFSET …
#define MAX_NUM_OF_DUMPS_TO_STORE …

#define REGION_CR_SPACE …
#define REGION_FW_HEALTH …

static const char * const region_cr_space_str = …;
static const char * const region_fw_health_str = …;

static const struct devlink_region_ops region_cr_space_ops = …;

static const struct devlink_region_ops region_fw_health_ops = …;

/* Set to true in case cr enable bit was set to true before crdump */
static bool crdump_enbale_bit_set;

static void crdump_enable_crspace_access(struct mlx4_dev *dev,
					 u8 __iomem *cr_space)
{ … }

static void crdump_disable_crspace_access(struct mlx4_dev *dev,
					  u8 __iomem *cr_space)
{ … }

static void mlx4_crdump_collect_crspace(struct mlx4_dev *dev,
					u8 __iomem *cr_space,
					u32 id)
{ … }

static void mlx4_crdump_collect_fw_health(struct mlx4_dev *dev,
					  u8 __iomem *cr_space,
					  u32 id)
{ … }

int mlx4_crdump_collect(struct mlx4_dev *dev)
{ … }

int mlx4_crdump_init(struct mlx4_dev *dev)
{ … }

void mlx4_crdump_end(struct mlx4_dev *dev)
{ … }