437 lines
13 KiB
C
437 lines
13 KiB
C
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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/* Copyright (c) 2017-2019 Mellanox Technologies. All rights reserved */
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#define pr_fmt(fmt) "mlxfw: " fmt
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/delay.h>
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#include "mlxfw.h"
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#include "mlxfw_mfa2.h"
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#define MLXFW_FSM_STATE_WAIT_CYCLE_MS 200
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#define MLXFW_FSM_STATE_WAIT_TIMEOUT_MS 30000
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#define MLXFW_FSM_STATE_WAIT_ROUNDS \
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(MLXFW_FSM_STATE_WAIT_TIMEOUT_MS / MLXFW_FSM_STATE_WAIT_CYCLE_MS)
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#define MLXFW_FSM_MAX_COMPONENT_SIZE (10 * (1 << 20))
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static const int mlxfw_fsm_state_errno[] = {
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[MLXFW_FSM_STATE_ERR_ERROR] = -EIO,
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[MLXFW_FSM_STATE_ERR_REJECTED_DIGEST_ERR] = -EBADMSG,
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[MLXFW_FSM_STATE_ERR_REJECTED_NOT_APPLICABLE] = -ENOENT,
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[MLXFW_FSM_STATE_ERR_REJECTED_UNKNOWN_KEY] = -ENOKEY,
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[MLXFW_FSM_STATE_ERR_REJECTED_AUTH_FAILED] = -EACCES,
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[MLXFW_FSM_STATE_ERR_REJECTED_UNSIGNED] = -EKEYREVOKED,
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[MLXFW_FSM_STATE_ERR_REJECTED_KEY_NOT_APPLICABLE] = -EKEYREJECTED,
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[MLXFW_FSM_STATE_ERR_REJECTED_BAD_FORMAT] = -ENOEXEC,
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[MLXFW_FSM_STATE_ERR_BLOCKED_PENDING_RESET] = -EBUSY,
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[MLXFW_FSM_STATE_ERR_MAX] = -EINVAL
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};
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#define MLXFW_ERR_PRFX "Firmware flash failed: "
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#define MLXFW_ERR_MSG(fwdev, extack, msg, err) do { \
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mlxfw_err(fwdev, "%s, err (%d)\n", MLXFW_ERR_PRFX msg, err); \
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NL_SET_ERR_MSG_MOD(extack, MLXFW_ERR_PRFX msg); \
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} while (0)
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static int mlxfw_fsm_state_err(struct mlxfw_dev *mlxfw_dev,
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struct netlink_ext_ack *extack,
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enum mlxfw_fsm_state_err err)
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{
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enum mlxfw_fsm_state_err fsm_state_err;
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fsm_state_err = min_t(enum mlxfw_fsm_state_err, err,
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MLXFW_FSM_STATE_ERR_MAX);
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switch (fsm_state_err) {
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case MLXFW_FSM_STATE_ERR_ERROR:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "general error", err);
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break;
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case MLXFW_FSM_STATE_ERR_REJECTED_DIGEST_ERR:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "component hash mismatch", err);
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break;
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case MLXFW_FSM_STATE_ERR_REJECTED_NOT_APPLICABLE:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "component not applicable", err);
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break;
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case MLXFW_FSM_STATE_ERR_REJECTED_UNKNOWN_KEY:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "unknown key", err);
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break;
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case MLXFW_FSM_STATE_ERR_REJECTED_AUTH_FAILED:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "authentication failed", err);
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break;
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case MLXFW_FSM_STATE_ERR_REJECTED_UNSIGNED:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "component was not signed", err);
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break;
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case MLXFW_FSM_STATE_ERR_REJECTED_KEY_NOT_APPLICABLE:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "key not applicable", err);
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break;
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case MLXFW_FSM_STATE_ERR_REJECTED_BAD_FORMAT:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "bad format", err);
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break;
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case MLXFW_FSM_STATE_ERR_BLOCKED_PENDING_RESET:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "pending reset", err);
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break;
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case MLXFW_FSM_STATE_ERR_OK:
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case MLXFW_FSM_STATE_ERR_MAX:
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MLXFW_ERR_MSG(mlxfw_dev, extack, "unknown error", err);
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break;
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}
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return mlxfw_fsm_state_errno[fsm_state_err];
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};
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static int mlxfw_fsm_state_wait(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
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enum mlxfw_fsm_state fsm_state,
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struct netlink_ext_ack *extack)
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{
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enum mlxfw_fsm_state_err fsm_state_err;
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enum mlxfw_fsm_state curr_fsm_state;
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int times;
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int err;
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times = MLXFW_FSM_STATE_WAIT_ROUNDS;
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retry:
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err = mlxfw_dev->ops->fsm_query_state(mlxfw_dev, fwhandle,
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&curr_fsm_state, &fsm_state_err);
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if (err) {
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MLXFW_ERR_MSG(mlxfw_dev, extack, "FSM state query failed", err);
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return err;
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}
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if (fsm_state_err != MLXFW_FSM_STATE_ERR_OK)
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return mlxfw_fsm_state_err(mlxfw_dev, extack, fsm_state_err);
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if (curr_fsm_state != fsm_state) {
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if (--times == 0) {
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MLXFW_ERR_MSG(mlxfw_dev, extack,
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"Timeout reached on FSM state change", -ETIMEDOUT);
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return -ETIMEDOUT;
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}
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msleep(MLXFW_FSM_STATE_WAIT_CYCLE_MS);
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goto retry;
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}
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return 0;
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}
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static int
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mlxfw_fsm_reactivate_err(struct mlxfw_dev *mlxfw_dev,
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struct netlink_ext_ack *extack, u8 err)
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{
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enum mlxfw_fsm_reactivate_status status;
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#define MXFW_REACT_PRFX "Reactivate FSM: "
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#define MLXFW_REACT_ERR(msg, err) \
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MLXFW_ERR_MSG(mlxfw_dev, extack, MXFW_REACT_PRFX msg, err)
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status = min_t(enum mlxfw_fsm_reactivate_status, err,
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MLXFW_FSM_REACTIVATE_STATUS_MAX);
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switch (status) {
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case MLXFW_FSM_REACTIVATE_STATUS_BUSY:
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MLXFW_REACT_ERR("busy", err);
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break;
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case MLXFW_FSM_REACTIVATE_STATUS_PROHIBITED_FW_VER_ERR:
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MLXFW_REACT_ERR("prohibited fw ver", err);
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break;
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case MLXFW_FSM_REACTIVATE_STATUS_FIRST_PAGE_COPY_FAILED:
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MLXFW_REACT_ERR("first page copy failed", err);
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break;
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case MLXFW_FSM_REACTIVATE_STATUS_FIRST_PAGE_ERASE_FAILED:
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MLXFW_REACT_ERR("first page erase failed", err);
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break;
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case MLXFW_FSM_REACTIVATE_STATUS_FIRST_PAGE_RESTORE_FAILED:
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MLXFW_REACT_ERR("first page restore failed", err);
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break;
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case MLXFW_FSM_REACTIVATE_STATUS_CANDIDATE_FW_DEACTIVATION_FAILED:
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MLXFW_REACT_ERR("candidate fw deactivation failed", err);
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break;
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case MLXFW_FSM_REACTIVATE_STATUS_ERR_DEVICE_RESET_REQUIRED:
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MLXFW_REACT_ERR("device reset required", err);
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break;
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case MLXFW_FSM_REACTIVATE_STATUS_ERR_FW_PROGRAMMING_NEEDED:
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MLXFW_REACT_ERR("fw programming needed", err);
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break;
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case MLXFW_FSM_REACTIVATE_STATUS_FW_ALREADY_ACTIVATED:
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MLXFW_REACT_ERR("fw already activated", err);
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break;
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case MLXFW_FSM_REACTIVATE_STATUS_OK:
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case MLXFW_FSM_REACTIVATE_STATUS_MAX:
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MLXFW_REACT_ERR("unexpected error", err);
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break;
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}
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return -EREMOTEIO;
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};
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static int mlxfw_fsm_reactivate(struct mlxfw_dev *mlxfw_dev,
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struct netlink_ext_ack *extack,
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bool *supported)
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{
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u8 status;
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int err;
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if (!mlxfw_dev->ops->fsm_reactivate)
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return 0;
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err = mlxfw_dev->ops->fsm_reactivate(mlxfw_dev, &status);
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if (err == -EOPNOTSUPP) {
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*supported = false;
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return 0;
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}
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if (err) {
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MLXFW_ERR_MSG(mlxfw_dev, extack,
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"Could not reactivate firmware flash", err);
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return err;
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}
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if (status == MLXFW_FSM_REACTIVATE_STATUS_OK ||
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status == MLXFW_FSM_REACTIVATE_STATUS_FW_ALREADY_ACTIVATED)
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return 0;
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return mlxfw_fsm_reactivate_err(mlxfw_dev, extack, status);
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}
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static void mlxfw_status_notify(struct mlxfw_dev *mlxfw_dev,
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const char *msg, const char *comp_name,
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u32 done_bytes, u32 total_bytes)
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{
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devlink_flash_update_status_notify(mlxfw_dev->devlink, msg, comp_name,
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done_bytes, total_bytes);
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}
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#define MLXFW_ALIGN_DOWN(x, align_bits) ((x) & ~((1 << (align_bits)) - 1))
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#define MLXFW_ALIGN_UP(x, align_bits) \
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MLXFW_ALIGN_DOWN((x) + ((1 << (align_bits)) - 1), (align_bits))
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static int mlxfw_flash_component(struct mlxfw_dev *mlxfw_dev,
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u32 fwhandle,
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struct mlxfw_mfa2_component *comp,
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bool reactivate_supp,
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struct netlink_ext_ack *extack)
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{
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u16 comp_max_write_size;
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u8 comp_align_bits;
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u32 comp_max_size;
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char comp_name[8];
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u16 block_size;
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u8 *block_ptr;
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u32 offset;
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int err;
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sprintf(comp_name, "%u", comp->index);
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err = mlxfw_dev->ops->component_query(mlxfw_dev, comp->index,
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&comp_max_size, &comp_align_bits,
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&comp_max_write_size);
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if (err) {
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MLXFW_ERR_MSG(mlxfw_dev, extack, "FSM component query failed", err);
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return err;
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}
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comp_max_size = min_t(u32, comp_max_size, MLXFW_FSM_MAX_COMPONENT_SIZE);
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if (comp->data_size > comp_max_size) {
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MLXFW_ERR_MSG(mlxfw_dev, extack,
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"Component size is bigger than limit", -EINVAL);
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return -EINVAL;
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}
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comp_max_write_size = MLXFW_ALIGN_DOWN(comp_max_write_size,
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comp_align_bits);
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mlxfw_dbg(mlxfw_dev, "Component update\n");
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mlxfw_status_notify(mlxfw_dev, "Updating component", comp_name, 0, 0);
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err = mlxfw_dev->ops->fsm_component_update(mlxfw_dev, fwhandle,
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comp->index,
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comp->data_size);
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if (err) {
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if (!reactivate_supp)
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MLXFW_ERR_MSG(mlxfw_dev, extack,
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"FSM component update failed, FW reactivate is not supported",
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err);
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else
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MLXFW_ERR_MSG(mlxfw_dev, extack,
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"FSM component update failed", err);
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return err;
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}
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err = mlxfw_fsm_state_wait(mlxfw_dev, fwhandle,
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MLXFW_FSM_STATE_DOWNLOAD, extack);
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if (err)
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goto err_out;
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mlxfw_dbg(mlxfw_dev, "Component download\n");
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mlxfw_status_notify(mlxfw_dev, "Downloading component",
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comp_name, 0, comp->data_size);
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for (offset = 0;
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offset < MLXFW_ALIGN_UP(comp->data_size, comp_align_bits);
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offset += comp_max_write_size) {
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block_ptr = comp->data + offset;
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block_size = (u16) min_t(u32, comp->data_size - offset,
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comp_max_write_size);
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err = mlxfw_dev->ops->fsm_block_download(mlxfw_dev, fwhandle,
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block_ptr, block_size,
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offset);
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if (err) {
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MLXFW_ERR_MSG(mlxfw_dev, extack,
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"Component download failed", err);
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goto err_out;
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}
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mlxfw_status_notify(mlxfw_dev, "Downloading component",
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comp_name, offset + block_size,
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comp->data_size);
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}
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mlxfw_dbg(mlxfw_dev, "Component verify\n");
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mlxfw_status_notify(mlxfw_dev, "Verifying component", comp_name, 0, 0);
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err = mlxfw_dev->ops->fsm_component_verify(mlxfw_dev, fwhandle,
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comp->index);
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if (err) {
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MLXFW_ERR_MSG(mlxfw_dev, extack,
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"FSM component verify failed", err);
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goto err_out;
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}
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err = mlxfw_fsm_state_wait(mlxfw_dev, fwhandle,
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MLXFW_FSM_STATE_LOCKED, extack);
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if (err)
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goto err_out;
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return 0;
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err_out:
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mlxfw_dev->ops->fsm_cancel(mlxfw_dev, fwhandle);
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return err;
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}
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static int mlxfw_flash_components(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
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struct mlxfw_mfa2_file *mfa2_file,
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bool reactivate_supp,
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struct netlink_ext_ack *extack)
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{
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u32 component_count;
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int err;
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int i;
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err = mlxfw_mfa2_file_component_count(mfa2_file, mlxfw_dev->psid,
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mlxfw_dev->psid_size,
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&component_count);
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if (err) {
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MLXFW_ERR_MSG(mlxfw_dev, extack,
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"Could not find device PSID in MFA2 file", err);
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return err;
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}
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for (i = 0; i < component_count; i++) {
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struct mlxfw_mfa2_component *comp;
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comp = mlxfw_mfa2_file_component_get(mfa2_file, mlxfw_dev->psid,
|
||
|
|
mlxfw_dev->psid_size, i);
|
||
|
|
if (IS_ERR(comp)) {
|
||
|
|
err = PTR_ERR(comp);
|
||
|
|
MLXFW_ERR_MSG(mlxfw_dev, extack,
|
||
|
|
"Failed to get MFA2 component", err);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
mlxfw_info(mlxfw_dev, "Flashing component type %d\n",
|
||
|
|
comp->index);
|
||
|
|
err = mlxfw_flash_component(mlxfw_dev, fwhandle, comp,
|
||
|
|
reactivate_supp, extack);
|
||
|
|
mlxfw_mfa2_file_component_put(comp);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int mlxfw_firmware_flash(struct mlxfw_dev *mlxfw_dev,
|
||
|
|
const struct firmware *firmware,
|
||
|
|
struct netlink_ext_ack *extack)
|
||
|
|
{
|
||
|
|
struct mlxfw_mfa2_file *mfa2_file;
|
||
|
|
bool reactivate_supp = true;
|
||
|
|
u32 fwhandle;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (!mlxfw_mfa2_check(firmware)) {
|
||
|
|
MLXFW_ERR_MSG(mlxfw_dev, extack,
|
||
|
|
"Firmware file is not MFA2", -EINVAL);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
mfa2_file = mlxfw_mfa2_file_init(firmware);
|
||
|
|
if (IS_ERR(mfa2_file)) {
|
||
|
|
err = PTR_ERR(mfa2_file);
|
||
|
|
MLXFW_ERR_MSG(mlxfw_dev, extack,
|
||
|
|
"Failed to initialize MFA2 firmware file", err);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
mlxfw_info(mlxfw_dev, "Initialize firmware flash process\n");
|
||
|
|
mlxfw_status_notify(mlxfw_dev, "Initializing firmware flash process",
|
||
|
|
NULL, 0, 0);
|
||
|
|
err = mlxfw_dev->ops->fsm_lock(mlxfw_dev, &fwhandle);
|
||
|
|
if (err) {
|
||
|
|
MLXFW_ERR_MSG(mlxfw_dev, extack,
|
||
|
|
"Could not lock the firmware FSM", err);
|
||
|
|
goto err_fsm_lock;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = mlxfw_fsm_state_wait(mlxfw_dev, fwhandle,
|
||
|
|
MLXFW_FSM_STATE_LOCKED, extack);
|
||
|
|
if (err)
|
||
|
|
goto err_state_wait_idle_to_locked;
|
||
|
|
|
||
|
|
err = mlxfw_fsm_reactivate(mlxfw_dev, extack, &reactivate_supp);
|
||
|
|
if (err)
|
||
|
|
goto err_fsm_reactivate;
|
||
|
|
|
||
|
|
err = mlxfw_fsm_state_wait(mlxfw_dev, fwhandle,
|
||
|
|
MLXFW_FSM_STATE_LOCKED, extack);
|
||
|
|
if (err)
|
||
|
|
goto err_state_wait_reactivate_to_locked;
|
||
|
|
|
||
|
|
err = mlxfw_flash_components(mlxfw_dev, fwhandle, mfa2_file,
|
||
|
|
reactivate_supp, extack);
|
||
|
|
if (err)
|
||
|
|
goto err_flash_components;
|
||
|
|
|
||
|
|
mlxfw_dbg(mlxfw_dev, "Activate image\n");
|
||
|
|
mlxfw_status_notify(mlxfw_dev, "Activating image", NULL, 0, 0);
|
||
|
|
err = mlxfw_dev->ops->fsm_activate(mlxfw_dev, fwhandle);
|
||
|
|
if (err) {
|
||
|
|
MLXFW_ERR_MSG(mlxfw_dev, extack,
|
||
|
|
"Could not activate the downloaded image", err);
|
||
|
|
goto err_fsm_activate;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = mlxfw_fsm_state_wait(mlxfw_dev, fwhandle,
|
||
|
|
MLXFW_FSM_STATE_LOCKED, extack);
|
||
|
|
if (err)
|
||
|
|
goto err_state_wait_activate_to_locked;
|
||
|
|
|
||
|
|
mlxfw_dbg(mlxfw_dev, "Handle release\n");
|
||
|
|
mlxfw_dev->ops->fsm_release(mlxfw_dev, fwhandle);
|
||
|
|
|
||
|
|
mlxfw_info(mlxfw_dev, "Firmware flash done\n");
|
||
|
|
mlxfw_status_notify(mlxfw_dev, "Firmware flash done", NULL, 0, 0);
|
||
|
|
mlxfw_mfa2_file_fini(mfa2_file);
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_state_wait_activate_to_locked:
|
||
|
|
err_fsm_activate:
|
||
|
|
err_flash_components:
|
||
|
|
err_state_wait_reactivate_to_locked:
|
||
|
|
err_fsm_reactivate:
|
||
|
|
err_state_wait_idle_to_locked:
|
||
|
|
mlxfw_dev->ops->fsm_release(mlxfw_dev, fwhandle);
|
||
|
|
err_fsm_lock:
|
||
|
|
mlxfw_mfa2_file_fini(mfa2_file);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(mlxfw_firmware_flash);
|
||
|
|
|
||
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
||
|
|
MODULE_AUTHOR("Yotam Gigi <yotamg@mellanox.com>");
|
||
|
|
MODULE_DESCRIPTION("Mellanox firmware flash lib");
|