/* Copyright (c) 2017-2018, The Linux Foundation. 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 CAM_ICP_HW_MGR_H
#define CAM_ICP_HW_MGR_H

#include <linux/types.h>
#include <linux/completion.h>
#include <media/cam_icp.h>
#include "cam_icp_hw_intf.h"
#include "cam_hw_mgr_intf.h"
#include "cam_hw_intf.h"
#include "cam_a5_hw_intf.h"
#include "hfi_session_defs.h"
#include "cam_req_mgr_workq.h"
#include "cam_mem_mgr.h"
#include "cam_smmu_api.h"
#include "cam_soc_util.h"
#include "cam_req_mgr_timer.h"

#define CAM_ICP_ROLE_PARENT     1
#define CAM_ICP_ROLE_CHILD      2

#define CAM_FRAME_CMD_MAX       20

#define CAM_MAX_OUT_RES         6
#define CAM_MAX_IN_RES          8

#define ICP_WORKQ_NUM_TASK      100
#define ICP_WORKQ_TASK_CMD_TYPE 1
#define ICP_WORKQ_TASK_MSG_TYPE 2

#define ICP_PACKET_SIZE         0
#define ICP_PACKET_TYPE         1
#define ICP_PACKET_OPCODE       2
#define ICP_MAX_OUTPUT_SUPPORTED 6

#define ICP_FRAME_PROCESS_SUCCESS 0
#define ICP_FRAME_PROCESS_FAILURE 1
#define ICP_MSG_BUF_SIZE        256
#define ICP_DBG_BUF_SIZE        102400

#define ICP_CLK_HW_IPE          0x0
#define ICP_CLK_HW_BPS          0x1
#define ICP_CLK_HW_MAX          0x2

#define ICP_OVER_CLK_THRESHOLD  15

#define CPAS_IPE0_BIT           0x1000
#define CPAS_IPE1_BIT           0x2000
#define CPAS_BPS_BIT            0x400

#define ICP_PWR_CLP_BPS         0x00000001
#define ICP_PWR_CLP_IPE0        0x00010000
#define ICP_PWR_CLP_IPE1        0x00020000

#define CAM_ICP_CTX_STATE_FREE      0x0
#define CAM_ICP_CTX_STATE_IN_USE    0x1
#define CAM_ICP_CTX_STATE_ACQUIRED  0x2
#define CAM_ICP_CTX_STATE_RELEASE   0x3

/**
 * struct icp_hfi_mem_info
 * @qtbl: Memory info of queue table
 * @cmd_q: Memory info of command queue
 * @msg_q: Memory info of message queue
 * @dbg_q: Memory info of debug queue
 * @sec_heap: Memory info of secondary heap
 * @fw_buf: Memory info of firmware
 */
struct icp_hfi_mem_info {
	struct cam_mem_mgr_memory_desc qtbl;
	struct cam_mem_mgr_memory_desc cmd_q;
	struct cam_mem_mgr_memory_desc msg_q;
	struct cam_mem_mgr_memory_desc dbg_q;
	struct cam_mem_mgr_memory_desc sec_heap;
	struct cam_mem_mgr_memory_desc fw_buf;
	struct cam_smmu_region_info shmem;
};

/**
 * struct hfi_cmd_work_data
 * @type: Task type
 * @data: Pointer to command data
 * @request_id: Request id
 */
struct hfi_cmd_work_data {
	uint32_t type;
	void *data;
	int32_t request_id;
};

/**
 * struct hfi_msg_work_data
 * @type: Task type
 * @data: Pointer to message data
 * @irq_status: IRQ status
 */
struct hfi_msg_work_data {
	uint32_t type;
	void *data;
	uint32_t irq_status;
};

/**
  * struct clk_work_data
  * @type: Task type
  * @data: Pointer to clock info
  */
struct clk_work_data {
	uint32_t type;
	void *data;
};

/**
 * struct hfi_frame_process_info
 * @hfi_frame_cmd: Frame process command info
 * @bitmap: Bitmap for hfi_frame_cmd
 * @bits: Used in hfi_frame_cmd bitmap
 * @lock: Lock for hfi_frame_cmd
 * @request_id: Request id list
 * @num_out_resources: Number of out syncs
 * @out_resource: Out sync info
 * @fw_process_flag: Frame process flag
 * @clk_info: Clock information for a request
 */
struct hfi_frame_process_info {
	struct hfi_cmd_ipebps_async hfi_frame_cmd[CAM_FRAME_CMD_MAX];
	void *bitmap;
	size_t bits;
	struct mutex lock;
	uint64_t request_id[CAM_FRAME_CMD_MAX];
	uint32_t num_out_resources[CAM_FRAME_CMD_MAX];
	uint32_t out_resource[CAM_FRAME_CMD_MAX][CAM_MAX_OUT_RES];
	uint32_t in_resource[CAM_FRAME_CMD_MAX];
	uint32_t in_free_resource[CAM_FRAME_CMD_MAX];
	uint32_t fw_process_flag[CAM_FRAME_CMD_MAX];
	struct cam_icp_clk_bw_request clk_info[CAM_FRAME_CMD_MAX];
};

/**
 * struct cam_ctx_clk_info
 * @curr_fc: Context latest request frame cycles
 * @rt_flag: Flag to indicate real time request
 * @base_clk: Base clock to process the request
 * @reserved: Reserved field
 * #uncompressed_bw: Current bandwidth voting
 * @compressed_bw: Current compressed bandwidth voting
 * @clk_rate: Supported clock rates for the context
 */
struct cam_ctx_clk_info {
	uint32_t curr_fc;
	uint32_t rt_flag;
	uint32_t base_clk;
	uint32_t reserved;
	uint64_t uncompressed_bw;
	uint64_t compressed_bw;
	int32_t clk_rate[CAM_MAX_VOTE];
};
/**
 * struct cam_icp_hw_ctx_data
 * @context_priv: Context private data
 * @ctx_mutex: Mutex for context
 * @fw_handle: Firmware handle
 * @scratch_mem_size: Scratch memory size
 * @acquire_dev_cmd: Acquire command
 * @icp_dev_acquire_info: Acquire device info
 * @ctxt_event_cb: Context callback function
 * @state: context state
 * @role: Role of a context in case of chaining
 * @chain_ctx: Peer context
 * @hfi_frame_process: Frame process command
 * @wait_complete: Completion info
 * @temp_payload: Payload for destroy handle data
 * @ctx_id: Context Id
 * @clk_info: Current clock info of a context
 * @watch_dog: watchdog timer handle
 * @watch_dog_reset_counter: Counter for watch dog reset
 */
struct cam_icp_hw_ctx_data {
	void *context_priv;
	struct mutex ctx_mutex;
	uint32_t fw_handle;
	uint32_t scratch_mem_size;
	struct cam_acquire_dev_cmd acquire_dev_cmd;
	struct cam_icp_acquire_dev_info *icp_dev_acquire_info;
	cam_hw_event_cb_func ctxt_event_cb;
	uint32_t state;
	uint32_t role;
	struct cam_icp_hw_ctx_data *chain_ctx;
	struct hfi_frame_process_info hfi_frame_process;
	struct completion wait_complete;
	struct ipe_bps_destroy temp_payload;
	uint32_t ctx_id;
	struct cam_ctx_clk_info clk_info;
	struct cam_req_mgr_timer *watch_dog;
	uint32_t watch_dog_reset_counter;
};

/**
 * struct icp_cmd_generic_blob
 * @ctx: Current context info
 * @frame_info_idx: Index used for frame process info
 */
struct icp_cmd_generic_blob {
	struct cam_icp_hw_ctx_data *ctx;
	uint32_t frame_info_idx;
};

/**
 * struct cam_icp_clk_info
 * @base_clk: Base clock to process request
 * @curr_clk: Current clock of hadrware
 * @threshold: Threshold for overclk count
 * @over_clked: Over clock count
 * @uncompressed_bw: Current bandwidth voting
 * @compressed_bw: Current compressed bandwidth voting
 * @hw_type: IPE/BPS device type
 * @watch_dog: watchdog timer handle
 * @watch_dog_reset_counter: Counter for watch dog reset
 */
struct cam_icp_clk_info {
	uint32_t base_clk;
	uint32_t curr_clk;
	uint32_t threshold;
	uint32_t over_clked;
	uint64_t uncompressed_bw;
	uint64_t compressed_bw;
	uint32_t hw_type;
	struct cam_req_mgr_timer *watch_dog;
	uint32_t watch_dog_reset_counter;
};

/**
 * struct cam_icp_hw_mgr
 * @hw_mgr_mutex: Mutex for ICP hardware manager
 * @hw_mgr_lock: Spinlock for ICP hardware manager
 * @devices: Devices of ICP hardware manager
 * @ctx_data: Context data
 * @icp_caps: ICP capabilities
 * @fw_download: Firmware download state
 * @iommu_hdl: Non secure IOMMU handle
 * @iommu_sec_hdl: Secure IOMMU handle
 * @hfi_mem: Memory for hfi
 * @cmd_work: Work queue for hfi commands
 * @msg_work: Work queue for hfi messages
 * @msg_buf: Buffer for message data from firmware
 * @dbg_buf: Buffer for debug data from firmware
 * @a5_complete: Completion info
 * @cmd_work_data: Pointer to command work queue task
 * @msg_work_data: Pointer to message work queue task
 * @ctxt_cnt: Active context count
 * @ipe_ctxt_cnt: IPE Active context count
 * @bps_ctxt_cnt: BPS Active context count
 * @dentry: Debugfs entry
 * @a5_debug: A5 debug flag
 * @icp_pc_flag: Flag to enable/disable power collapse
 * @ipe_bps_pc_flag: Flag to enable/disable
 *                   power collapse for ipe & bps
 * @icp_debug_clk: Set clock based on debug value
 * @icp_default_clk: Set this clok if user doesn't supply
 * @clk_info: Clock info of hardware
 * @secure_mode: Flag to enable/disable secure camera
 * @a5_jtag_debug: entry to enable A5 JTAG debugging
 * @a5_debug_q : entry to enable FW debug message
 * @a5_dbg_lvl : debug level set to FW.
 * @ipe0_enable: Flag for IPE0
 * @ipe1_enable: Flag for IPE1
 * @bps_enable: Flag for BPS
 * @core_info: 32 bit value , tells IPE0/1 and BPS
 * @a5_dev_intf : Device interface for A5
 * @ipe0_dev_intf: Device interface for IPE0
 * @ipe1_dev_intf: Device interface for IPE1
 * @bps_dev_intf: Device interface for BPS
 * @ipe_clk_state: IPE clock state flag
 * @bps_clk_state: BPS clock state flag
 */
struct cam_icp_hw_mgr {
	struct mutex hw_mgr_mutex;
	spinlock_t hw_mgr_lock;

	struct cam_hw_intf **devices[CAM_ICP_DEV_MAX];
	struct cam_icp_hw_ctx_data ctx_data[CAM_ICP_CTX_MAX];
	struct cam_icp_query_cap_cmd icp_caps;

	bool fw_download;
	int32_t iommu_hdl;
	int32_t iommu_sec_hdl;
	struct icp_hfi_mem_info hfi_mem;
	struct cam_req_mgr_core_workq *cmd_work;
	struct cam_req_mgr_core_workq *msg_work;
	uint32_t msg_buf[ICP_MSG_BUF_SIZE];
	uint32_t dbg_buf[ICP_DBG_BUF_SIZE];
	struct completion a5_complete;
	struct hfi_cmd_work_data *cmd_work_data;
	struct hfi_msg_work_data *msg_work_data;
	uint32_t ctxt_cnt;
	uint32_t ipe_ctxt_cnt;
	uint32_t bps_ctxt_cnt;
	struct dentry *dentry;
	bool a5_debug;
	bool icp_pc_flag;
	bool ipe_bps_pc_flag;
	uint64_t icp_debug_clk;
	uint64_t icp_default_clk;
	struct cam_icp_clk_info clk_info[ICP_CLK_HW_MAX];
	bool secure_mode;
	bool a5_jtag_debug;
	bool a5_debug_q;
	u64 a5_dbg_lvl;
	bool ipe0_enable;
	bool ipe1_enable;
	bool bps_enable;
	uint32_t core_info;
	struct cam_hw_intf *a5_dev_intf;
	struct cam_hw_intf *ipe0_dev_intf;
	struct cam_hw_intf *ipe1_dev_intf;
	struct cam_hw_intf *bps_dev_intf;
	bool ipe_clk_state;
	bool bps_clk_state;
};

static int cam_icp_mgr_hw_close(void *hw_priv, void *hw_close_args);
static int cam_icp_mgr_hw_open(void *hw_mgr_priv, void *download_fw_args);
static int cam_icp_mgr_icp_resume(struct cam_icp_hw_mgr *hw_mgr);
static int cam_icp_mgr_icp_power_collapse(struct cam_icp_hw_mgr *hw_mgr);
#endif /* CAM_ICP_HW_MGR_H */