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// SPDX-License-Identifier: GPL-2.0-or-later
/**
* rwnx_ipc_utils.h
*
* IPC utility function declarations
*
* Copyright (C) RivieraWaves 2012-2019
*/
#ifndef _RWNX_IPC_UTILS_H_
#define _RWNX_IPC_UTILS_H_
#include <linux/dma-mapping.h>
#include <linux/dmapool.h>
#include <linux/skbuff.h>
#include "lmac_msg.h"
#include "aicwf_debug.h"
#if 0
#ifdef CONFIG_RWNX_DBG
/* #define RWNX_DBG(format, arg...) pr_warn(format, ## arg) */
#define RWNX_DBG printk
#else
#define RWNX_DBG(a...) do {} while (0)
#endif
#endif
enum rwnx_dev_flag {
RWNX_DEV_RESTARTING,
RWNX_DEV_STACK_RESTARTING,
RWNX_DEV_STARTED,
};
struct rwnx_hw;
struct rwnx_sta;
/**
* struct rwnx_ipc_elem - Generic IPC buffer of fixed size
*
* @addr: Host address of the buffer.
* @dma_addr: DMA address of the buffer.
*/
struct rwnx_ipc_elem {
void *addr;
dma_addr_t dma_addr;
};
/**
* struct rwnx_ipc_elem_pool - Generic pool of IPC buffers of fixed size
*
* @nb: Number of buffers currenlty allocated in the pool
* @buf: Array of buffers (size of array is @nb)
* @pool: DMA pool in which buffers have been allocated
*/
struct rwnx_ipc_elem_pool {
int nb;
struct rwnx_ipc_elem *buf;
struct dma_pool *pool;
};
/**
* struct rwnx_ipc_elem - Generic IPC buffer of variable size
*
* @addr: Host address of the buffer.
* @dma_addr: DMA address of the buffer.
* @size: Size, in bytes, of the buffer
*/
struct rwnx_ipc_elem_var {
void *addr;
dma_addr_t dma_addr;
size_t size;
};
/**
* struct rwnx_ipc_dbgdump_elem - IPC buffer for debug dump
*
* @mutex: Mutex to protect access to debug dump
* @buf: IPC buffer
*/
struct rwnx_ipc_dbgdump_elem {
struct mutex mutex;
struct rwnx_ipc_elem_var buf;
};
static const u32 rwnx_rxbuff_pattern = 0xCAFEFADE;
/*
* Maximum Length of Radiotap header vendor specific data(in bytes)
*/
#define RADIOTAP_HDR_VEND_MAX_LEN 16
/*
* Maximum Radiotap Header Length without vendor specific data (in bytes)
*/
#define RADIOTAP_HDR_MAX_LEN 80
/*
* Unsupported HT Frame data length (in bytes)
*/
#define UNSUP_RX_VEC_DATA_LEN 2
/**
* struct rwnx_ipc_skb_elem - IPC buffer for SKB element
*
* @skb: Pointer to the skb buffer allocated
* @dma_addr: DMA address of the data buffer fo skb
*
*/
struct rwnx_ipc_skb_elem {
struct sk_buff *skb;
dma_addr_t dma_addr;
};
#ifdef CONFIG_RWNX_FULLMAC
/* Maximum number of rx buffer the fw may use at the same time */
#define RWNX_RXBUFF_MAX (64 * NX_REMOTE_STA_MAX)
/**
* struct rwnx_ipc_rxbuf_elems - IPC buffers for RX
*
* @skb: Array of buffer push to FW.
* @idx: Index of the last pushed skb.(Use to find the next free entry quicker)
*
* Note: contrary to softmac version, dma_addr are stored inside skb->cb.
* (cf &struct rwnx_skb_cb)
*/
struct rwnx_ipc_rxbuf_elems {
struct sk_buff *skb[RWNX_RXBUFF_MAX];
int idx;
};
#endif /* CONFIG_RWNX_FULLMAC */
#endif /* _RWNX_IPC_UTILS_H_ */
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