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/*
*
* MNH State Manager HOST Driver
* Copyright (c) 2016, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#ifndef __MNH_SM_HOST
#define __MNH_SM_HOST
#include <linux/msm_ion.h>
#include <uapi/linux/mnh-sm.h>
#include "mnh-pcie.h"
#include "mnh-crypto.h"
/* Firmware download address */
#define HW_MNH_DRAM_BASE 0x40000000
#define HW_MNH_SBL_DOWNLOAD 0x40000000
#define HW_MNH_SBL_DOWNLOAD_EXE 0x00101000
#define HW_MNH_KERNEL_DOWNLOAD 0x40080000
#define HW_MNH_DT_DOWNLOAD 0x40880000
#define HW_MNH_RAMDISK_DOWNLOAD 0x40890000
/* Firmware download related definitions */
#define IMG_DOWNLOAD_MAX_SIZE (4000 * 1024)
#define FIP_IMG_SBL_SIZE_OFFSET 0x28
#define FIP_IMG_SBL_ADDR_OFFSET 0x20
enum mnh_boot_mode {
MNH_BOOT_MODE_PCIE,
MNH_BOOT_MODE_SPI,
};
struct mnh_ion_fw_conf {
dma_addr_t ap_addr; /* AP side addr (dma) */
unsigned long ap_offs; /* Slot's offset in the ion buffer */
uint64_t ep_addr; /* EP side addr (phys) */
size_t size; /* size of firmware */
enum cert_state cert; /* signature status */
size_t cert_size; /* length of the signature */
};
struct mnh_ion {
struct ion_client *client;
struct ion_handle *handle;
struct sg_table *sg;
void *vaddr;
size_t total_size; /* size in bytes */
bool is_fw_ready; /* whether fw loaded in ION */
struct mnh_ion_fw_conf fw_array[MAX_NR_MNH_FW_SLOTS];
struct device *device; /* Linux basic device associated with parent */
};
/** API to register hotplug callback to receive MNH up/down notifications
* @param[in] hotplug_cb handler for hotplug in/out events
* @return 0
*/
int mnh_sm_reg_hotplug_callback(hotplug_cb_t hotplug_cb);
/**
* API to obtain the state of monette hill.
* @return the power states of mnh.
*/
int mnh_sm_get_state(void);
/**
* API to set the state of monette hill.
* @param[in] Set the power states of mnh
*/
int mnh_sm_set_state(int state);
int mnh_sm_is_present(void);
/**
* API to claim ION buffer for mnh.
* @param[in] dev Linux device structure assocatiated with mnh_sm
* @param[in] ion Pre-allocated mnh_ion struct
* @param[in] size Size of ION buffer to claim (in bytes)
* @param[in] heap_id Heap ID to be used for the allocation
*
* @return 0 on success
* @return -negative on failure
*/
long mnh_ion_create_buffer(struct mnh_ion *ion, size_t size,
enum ion_heap_ids heap_id);
/**
* API to release previously claimed ION buffer.
* @param[in] ion Pre-allocated mnh_ion struct
* Caller is responsible for freeing ion.
*/
void mnh_ion_destroy_buffer(struct mnh_ion *ion);
/**
* API to request MNH firmware and stage them to ION buffer.
* @param[in] ion Pre-allocated mnh_ion struct
* Caller is responsible for freeing ion.
*
* @return 0 on success
* @return -negative on failure
*/
int mnh_ion_stage_firmware(struct mnh_ion *ion);
/**
* API to stage Play Store firmware update to ION buffer.
* @param[in] ion Pre-allocated mnh_ion struct
* Caller is responsible for freeing ion.
* @param[in] ion_sec Temporary allocated buffer holding
* firmware updated from Play Store channel
*
* @return 0 on success
* @return -negative on failure
*/
int mnh_ion_stage_firmware_update(struct mnh_ion *ion,
struct mnh_ion *ion_sec);
/*
* Callback from mnh-pwr when there is a failure event.
*
* @return 0 on success
* @return -errno on failure
*/
int mnh_sm_pwr_error_cb(void);
enum mnh_boot_mode mnh_sm_get_boot_mode(void);
#endif /* __MNH_SM_HOST */
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