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/* Copyright (c) 2013, 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 _BAM_DMUX_PRIVATE_H
#define _BAM_DMUX_PRIVATE_H
#include <linux/types.h>
#include <linux/dma-mapping.h>
#include <mach/sps.h>
#define BAM_MUX_HDR_MAGIC_NO 0x33fc
#define BAM_MUX_HDR_CMD_DATA 0
#define BAM_MUX_HDR_CMD_OPEN 1
#define BAM_MUX_HDR_CMD_CLOSE 2
#define BAM_MUX_HDR_CMD_STATUS 3 /* unused */
#define BAM_MUX_HDR_CMD_OPEN_NO_A2_PC 4
#define BUFFER_SIZE 2048
/**
* struct bam_ops_if - collection of function pointers to allow swappable
* runtime functionality
* @smsm_change_state_ptr: pointer to smsm_change_state function
* @smsm_get_state_ptr: pointer to smsm_get_state function
* @smsm_state_cb_register_ptr: pointer to smsm_state_cb_register function
* @smsm_state_cb_deregister_ptr: pointer to smsm_state_cb_deregister function
* @sps_connect_ptr: pointer to sps_connect function
* @sps_disconnect_ptr: pointer to sps_disconnect function
* @sps_register_bam_device_ptr: pointer to sps_register_bam_device
* @sps_deregister_bam_device_ptr: pointer to sps_deregister_bam_device
* function
* @sps_alloc_endpoint_ptr: pointer to sps_alloc_endpoint function
* @sps_free_endpoint_ptr: pointer to sps_free_endpoint function
* @sps_set_config_ptr: pointer to sps_set_config function
* @sps_get_config_ptr: pointer to sps_get_config function
* @sps_device_reset_ptr: pointer to sps_device_reset function
* @sps_register_event_ptr: pointer to sps_register_event function
* @sps_transfer_one_ptr: pointer to sps_transfer_one function
* @sps_get_iovec_ptr: pointer to sps_get_iovec function
* @sps_get_unused_desc_num_ptr: pointer to sps_get_unused_desc_num function
* @dma_to: enum for the direction of dma operations to device
* @dma_from: enum for the direction of dma operations from device
*
* This struct contains the interface from bam_dmux to smsm and sps. The
* pointers can be swapped out at run time to provide different functionality.
*/
struct bam_ops_if {
/* smsm */
int (*smsm_change_state_ptr)(uint32_t smsm_entry,
uint32_t clear_mask, uint32_t set_mask);
uint32_t (*smsm_get_state_ptr)(uint32_t smsm_entry);
int (*smsm_state_cb_register_ptr)(uint32_t smsm_entry, uint32_t mask,
void (*notify)(void *, uint32_t old_state, uint32_t new_state),
void *data);
int (*smsm_state_cb_deregister_ptr)(uint32_t smsm_entry, uint32_t mask,
void (*notify)(void *, uint32_t, uint32_t), void *data);
/* sps */
int (*sps_connect_ptr)(struct sps_pipe *h, struct sps_connect *connect);
int (*sps_disconnect_ptr)(struct sps_pipe *h);
int (*sps_register_bam_device_ptr)(
const struct sps_bam_props *bam_props,
u32 *dev_handle);
int (*sps_deregister_bam_device_ptr)(u32 dev_handle);
struct sps_pipe *(*sps_alloc_endpoint_ptr)(void);
int (*sps_free_endpoint_ptr)(struct sps_pipe *h);
int (*sps_set_config_ptr)(struct sps_pipe *h,
struct sps_connect *config);
int (*sps_get_config_ptr)(struct sps_pipe *h,
struct sps_connect *config);
int (*sps_device_reset_ptr)(u32 dev);
int (*sps_register_event_ptr)(struct sps_pipe *h,
struct sps_register_event *reg);
int (*sps_transfer_one_ptr)(struct sps_pipe *h,
u32 addr, u32 size,
void *user, u32 flags);
int (*sps_get_iovec_ptr)(struct sps_pipe *h,
struct sps_iovec *iovec);
int (*sps_get_unused_desc_num_ptr)(struct sps_pipe *h,
u32 *desc_num);
enum dma_data_direction dma_to;
enum dma_data_direction dma_from;
};
/**
* struct bam_mux_hdr - struct which contains bam dmux header info
* @magic_num: magic number placed at start to ensure that it is actually a
* valid bam dmux header
* @reserved: for later use
* @cmd: the command
* @pad_len: the length of padding
* @ch_id: the id of the bam dmux channel that this is sent on
* @pkt_len: the length of the packet that this is the header of
*/
struct bam_mux_hdr {
uint16_t magic_num;
uint8_t reserved;
uint8_t cmd;
uint8_t pad_len;
uint8_t ch_id;
uint16_t pkt_len;
};
/**
* struct rx_pkt_info - struct describing an rx packet
* @skb: socket buffer containing the packet
* @dma_address: dma mapped address of the packet
* @work: work_struct for processing the packet
* @list_node: list_head for placing this on a list
*/
struct rx_pkt_info {
struct sk_buff *skb;
dma_addr_t dma_address;
struct work_struct work;
struct list_head list_node;
};
/**
* struct tx_pkt_info - struct describing a tx packet
* @skb: socket buffer containing the packet
* @dma_address: dma mapped address of the packet
* @is_cmd: signifies whether this is a command or data packet
* @len: length og the packet
* @work: work_struct for processing this packet
* @list_node: list_head for placing this on a list
* @ts_sec: seconds portion of the timestamp
* @ts_nsec: nanoseconds portion of the timestamp
*
*/
struct tx_pkt_info {
struct sk_buff *skb;
dma_addr_t dma_address;
char is_cmd;
uint32_t len;
struct work_struct work;
struct list_head list_node;
unsigned ts_sec;
unsigned long ts_nsec;
};
void msm_bam_dmux_set_bam_ops(struct bam_ops_if *ops);
void msm_bam_dmux_deinit(void);
void msm_bam_dmux_reinit(void);
#endif /* _BAM_DMUX_PRIVATE_H */