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/* Copyright 2018 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __LIBFLASH_IPMI_HIOMAP_H
#define __LIBFLASH_IPMI_HIOMAP_H
#include <lock.h>
#include <stdbool.h>
#include <stdint.h>
#include "blocklevel.h"
enum lpc_window_state { closed_window, read_window, write_window };
struct lpc_window {
uint32_t lpc_addr; /* Offset into LPC space */
uint32_t cur_pos; /* Current position of the window in the flash */
uint32_t size; /* Size of the window into the flash */
};
struct ipmi_hiomap {
/* Members protected by the blocklevel lock */
uint8_t seq;
uint8_t version;
uint8_t block_size_shift;
uint16_t timeout;
struct blocklevel_device bl;
uint32_t total_size;
uint32_t erase_granule;
struct lpc_window current;
/*
* update, bmc_state and window_state can be accessed by both calls
* through read/write/erase functions and the IPMI SEL handler. All
* three variables are protected by lock to avoid conflict.
*/
struct lock lock;
uint8_t bmc_state;
enum lpc_window_state window_state;
};
int ipmi_hiomap_init(struct blocklevel_device **bl);
void ipmi_hiomap_exit(struct blocklevel_device *bl);
#endif /* __LIBFLASH_IPMI_HIOMAP_H */
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