/* Copyright (c) 2010-2012, Code Aurora Forum. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that 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 __MSM_PERIPHERAL_LOADER_H
#define __MSM_PERIPHERAL_LOADER_H

struct device;
struct module;
struct pil_priv;

/**
 * struct pil_desc - PIL descriptor
 * @name: string used for pil_get()
 * @dev: parent device
 * @ops: callback functions
 * @owner: module the descriptor belongs to
 * @proxy_timeout: delay in ms until proxy vote is removed
 * @flags: bitfield for image flags
 * @priv: DON'T USE - internal only
 */
struct pil_desc {
	const char *name;
	struct device *dev;
	const struct pil_reset_ops *ops;
	struct module *owner;
	unsigned long proxy_timeout;
	unsigned long flags;
#define PIL_SKIP_ENTRY_CHECK	BIT(0)
	struct pil_priv *priv;
};

/**
 * struct pil_reset_ops - PIL operations
 * @init_image: prepare an image for authentication
 * @mem_setup: prepare the image memory region
 * @verify_blob: authenticate a program segment, called once for each loadable
 *		 program segment (optional)
 * @proxy_vote: make proxy votes before auth_and_reset (optional)
 * @auth_and_reset: boot the processor
 * @proxy_unvote: remove any proxy votes (optional)
 * @shutdown: shutdown the processor
 */
struct pil_reset_ops {
	int (*init_image)(struct pil_desc *pil, const u8 *metadata,
			  size_t size);
	int (*mem_setup)(struct pil_desc *pil, phys_addr_t addr, size_t size);
	int (*verify_blob)(struct pil_desc *pil, u32 phy_addr, size_t size);
	int (*proxy_vote)(struct pil_desc *pil);
	int (*auth_and_reset)(struct pil_desc *pil);
	void (*proxy_unvote)(struct pil_desc *pil);
	int (*shutdown)(struct pil_desc *pil);
};

#ifdef CONFIG_MSM_PIL
extern int pil_desc_init(struct pil_desc *desc);
extern int pil_boot(struct pil_desc *desc);
extern void pil_shutdown(struct pil_desc *desc);
extern void pil_desc_release(struct pil_desc *desc);
extern phys_addr_t pil_get_entry_addr(struct pil_desc *desc);
#else
static inline int pil_desc_init(struct pil_desc *desc) { return 0; }
static inline int pil_boot(struct pil_desc *desc) { return 0; }
static inline void pil_shutdown(struct pil_desc *desc) { }
static inline void pil_desc_release(struct pil_desc *desc) { }
static inline phys_addr_t pil_get_entry_addr(struct pil_desc *desc)
{
	return 0;
}
#endif

#endif