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/* Freescale QUICC Engine HDLC Device Driver
*
* Copyright 2014 Freescale Semiconductor Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef _UCC_HDLC_H_
#define _UCC_HDLC_H_
#include <linux/kernel.h>
#include <linux/list.h>
#include <soc/fsl/qe/immap_qe.h>
#include <soc/fsl/qe/qe.h>
#include <soc/fsl/qe/ucc.h>
#include <soc/fsl/qe/ucc_fast.h>
/* UCC HDLC event register */
#define UCCE_HDLC_RX_EVENTS \
(UCC_HDLC_UCCE_RXF | UCC_HDLC_UCCE_RXB | UCC_HDLC_UCCE_BSY)
#define UCCE_HDLC_TX_EVENTS (UCC_HDLC_UCCE_TXB | UCC_HDLC_UCCE_TXE)
struct ucc_hdlc_param {
__be16 riptr;
__be16 tiptr;
__be16 res0;
__be16 mrblr;
__be32 rstate;
__be32 rbase;
__be16 rbdstat;
__be16 rbdlen;
__be32 rdptr;
__be32 tstate;
__be32 tbase;
__be16 tbdstat;
__be16 tbdlen;
__be32 tdptr;
__be32 rbptr;
__be32 tbptr;
__be32 rcrc;
__be32 res1;
__be32 tcrc;
__be32 res2;
__be32 res3;
__be32 c_mask;
__be32 c_pres;
__be16 disfc;
__be16 crcec;
__be16 abtsc;
__be16 nmarc;
__be32 max_cnt;
__be16 mflr;
__be16 rfthr;
__be16 rfcnt;
__be16 hmask;
__be16 haddr1;
__be16 haddr2;
__be16 haddr3;
__be16 haddr4;
__be16 ts_tmp;
__be16 tmp_mb;
};
struct ucc_hdlc_private {
struct ucc_tdm *utdm;
struct ucc_tdm_info *ut_info;
struct ucc_fast_private *uccf;
struct device *dev;
struct net_device *ndev;
struct napi_struct napi;
struct ucc_fast __iomem *uf_regs; /* UCC Fast registers */
struct ucc_hdlc_param __iomem *ucc_pram;
u16 tsa;
bool hdlc_busy;
bool loopback;
bool hdlc_bus;
u8 *tx_buffer;
u8 *rx_buffer;
dma_addr_t dma_tx_addr;
dma_addr_t dma_rx_addr;
struct qe_bd *tx_bd_base;
struct qe_bd *rx_bd_base;
dma_addr_t dma_tx_bd;
dma_addr_t dma_rx_bd;
struct qe_bd *curtx_bd;
struct qe_bd *currx_bd;
struct qe_bd *dirty_tx;
u16 currx_bdnum;
struct sk_buff **tx_skbuff;
struct sk_buff **rx_skbuff;
u16 skb_curtx;
u16 skb_currx;
unsigned short skb_dirtytx;
unsigned short tx_ring_size;
unsigned short rx_ring_size;
u32 ucc_pram_offset;
unsigned short encoding;
unsigned short parity;
unsigned short hmask;
u32 clocking;
spinlock_t lock; /* lock for Tx BD and Tx buffer */
#ifdef CONFIG_PM
struct ucc_hdlc_param *ucc_pram_bak;
u32 gumr;
u8 guemr;
u32 cmxsi1cr_l, cmxsi1cr_h;
u32 cmxsi1syr;
u32 cmxucr[4];
#endif
};
#define TX_BD_RING_LEN 0x10
#define RX_BD_RING_LEN 0x20
#define RX_CLEAN_MAX 0x10
#define NUM_OF_BUF 4
#define MAX_RX_BUF_LENGTH (48 * 0x20)
#define MAX_FRAME_LENGTH (MAX_RX_BUF_LENGTH + 8)
#define ALIGNMENT_OF_UCC_HDLC_PRAM 64
#define SI_BANK_SIZE 128
#define MAX_HDLC_NUM 4
#define HDLC_HEAD_LEN 2
#define HDLC_CRC_SIZE 2
#define TX_RING_MOD_MASK(size) (size - 1)
#define RX_RING_MOD_MASK(size) (size - 1)
#define HDLC_HEAD_MASK 0x0000
#define DEFAULT_HDLC_HEAD 0xff44
#define DEFAULT_ADDR_MASK 0x00ff
#define DEFAULT_HDLC_ADDR 0x00ff
#define BMR_GBL 0x20000000
#define BMR_BIG_ENDIAN 0x10000000
#define CRC_16BIT_MASK 0x0000F0B8
#define CRC_16BIT_PRES 0x0000FFFF
#define DEFAULT_RFTHR 1
#define DEFAULT_PPP_HEAD 0xff03
#endif
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