linux/drivers/net/ethernet/mellanox/mlxfw/mlxfw_fsm.c

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2017-2019 Mellanox Technologies. All rights reserved */

#define pr_fmt(fmt) …

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>

#include "mlxfw.h"
#include "mlxfw_mfa2.h"

#define MLXFW_FSM_STATE_WAIT_CYCLE_MS …
#define MLXFW_FSM_STATE_WAIT_TIMEOUT_MS …
#define MLXFW_FSM_STATE_WAIT_ROUNDS …
#define MLXFW_FSM_MAX_COMPONENT_SIZE …

static const int mlxfw_fsm_state_errno[] = …;

#define MLXFW_ERR_PRFX …
#define MLXFW_ERR_MSG(fwdev, extack, msg, err) …

static int mlxfw_fsm_state_err(struct mlxfw_dev *mlxfw_dev,
			       struct netlink_ext_ack *extack,
			       enum mlxfw_fsm_state_err err)
{
	enum mlxfw_fsm_state_err fsm_state_err;

	fsm_state_err = min_t(enum mlxfw_fsm_state_err, err,
			      MLXFW_FSM_STATE_ERR_MAX);

	switch (fsm_state_err) {
	case MLXFW_FSM_STATE_ERR_ERROR:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "general error", err);
		break;
	case MLXFW_FSM_STATE_ERR_REJECTED_DIGEST_ERR:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "component hash mismatch", err);
		break;
	case MLXFW_FSM_STATE_ERR_REJECTED_NOT_APPLICABLE:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "component not applicable", err);
		break;
	case MLXFW_FSM_STATE_ERR_REJECTED_UNKNOWN_KEY:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "unknown key", err);
		break;
	case MLXFW_FSM_STATE_ERR_REJECTED_AUTH_FAILED:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "authentication failed", err);
		break;
	case MLXFW_FSM_STATE_ERR_REJECTED_UNSIGNED:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "component was not signed", err);
		break;
	case MLXFW_FSM_STATE_ERR_REJECTED_KEY_NOT_APPLICABLE:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "key not applicable", err);
		break;
	case MLXFW_FSM_STATE_ERR_REJECTED_BAD_FORMAT:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "bad format", err);
		break;
	case MLXFW_FSM_STATE_ERR_BLOCKED_PENDING_RESET:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "pending reset", err);
		break;
	case MLXFW_FSM_STATE_ERR_OK:
	case MLXFW_FSM_STATE_ERR_MAX:
		MLXFW_ERR_MSG(mlxfw_dev, extack, "unknown error", err);
		break;
	}

	return mlxfw_fsm_state_errno[fsm_state_err];
};

static int mlxfw_fsm_state_wait(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
				enum mlxfw_fsm_state fsm_state,
				struct netlink_ext_ack *extack)
{ … }

static int
mlxfw_fsm_reactivate_err(struct mlxfw_dev *mlxfw_dev,
			 struct netlink_ext_ack *extack, u8 err)
{
	enum mlxfw_fsm_reactivate_status status;

#define MXFW_REACT_PRFX "Reactivate FSM: "
#define MLXFW_REACT_ERR(msg, err) \
	MLXFW_ERR_MSG(mlxfw_dev, extack, MXFW_REACT_PRFX msg, err)

	status = min_t(enum mlxfw_fsm_reactivate_status, err,
		       MLXFW_FSM_REACTIVATE_STATUS_MAX);

	switch (status) {
	case MLXFW_FSM_REACTIVATE_STATUS_BUSY:
		MLXFW_REACT_ERR("busy", err);
		break;
	case MLXFW_FSM_REACTIVATE_STATUS_PROHIBITED_FW_VER_ERR:
		MLXFW_REACT_ERR("prohibited fw ver", err);
		break;
	case MLXFW_FSM_REACTIVATE_STATUS_FIRST_PAGE_COPY_FAILED:
		MLXFW_REACT_ERR("first page copy failed", err);
		break;
	case MLXFW_FSM_REACTIVATE_STATUS_FIRST_PAGE_ERASE_FAILED:
		MLXFW_REACT_ERR("first page erase failed", err);
		break;
	case MLXFW_FSM_REACTIVATE_STATUS_FIRST_PAGE_RESTORE_FAILED:
		MLXFW_REACT_ERR("first page restore failed", err);
		break;
	case MLXFW_FSM_REACTIVATE_STATUS_CANDIDATE_FW_DEACTIVATION_FAILED:
		MLXFW_REACT_ERR("candidate fw deactivation failed", err);
		break;
	case MLXFW_FSM_REACTIVATE_STATUS_ERR_DEVICE_RESET_REQUIRED:
		MLXFW_REACT_ERR("device reset required", err);
		break;
	case MLXFW_FSM_REACTIVATE_STATUS_ERR_FW_PROGRAMMING_NEEDED:
		MLXFW_REACT_ERR("fw programming needed", err);
		break;
	case MLXFW_FSM_REACTIVATE_STATUS_FW_ALREADY_ACTIVATED:
		MLXFW_REACT_ERR("fw already activated", err);
		break;
	case MLXFW_FSM_REACTIVATE_STATUS_OK:
	case MLXFW_FSM_REACTIVATE_STATUS_MAX:
		MLXFW_REACT_ERR("unexpected error", err);
		break;
	}
	return -EREMOTEIO;
};

static int mlxfw_fsm_reactivate(struct mlxfw_dev *mlxfw_dev,
				struct netlink_ext_ack *extack,
				bool *supported)
{ … }

static void mlxfw_status_notify(struct mlxfw_dev *mlxfw_dev,
				const char *msg, const char *comp_name,
				u32 done_bytes, u32 total_bytes)
{ … }

#define MLXFW_ALIGN_DOWN(x, align_bits) …
#define MLXFW_ALIGN_UP(x, align_bits) …

static int mlxfw_flash_component(struct mlxfw_dev *mlxfw_dev,
				 u32 fwhandle,
				 struct mlxfw_mfa2_component *comp,
				 bool reactivate_supp,
				 struct netlink_ext_ack *extack)
{ … }

static int mlxfw_flash_components(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
				  struct mlxfw_mfa2_file *mfa2_file,
				  bool reactivate_supp,
				  struct netlink_ext_ack *extack)
{ … }

int mlxfw_firmware_flash(struct mlxfw_dev *mlxfw_dev,
			 const struct firmware *firmware,
			 struct netlink_ext_ack *extack)
{ … }
EXPORT_SYMBOL(…);

MODULE_LICENSE(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;