diff options
Diffstat (limited to 'drivers/net/wan/fsl_ucc_hdlc.h')
| -rw-r--r-- | drivers/net/wan/fsl_ucc_hdlc.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/drivers/net/wan/fsl_ucc_hdlc.h b/drivers/net/wan/fsl_ucc_hdlc.h new file mode 100644 index 000000000..71d5ad0a7 --- /dev/null +++ b/drivers/net/wan/fsl_ucc_hdlc.h @@ -0,0 +1,145 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Freescale QUICC Engine HDLC Device Driver + * + * Copyright 2014 Freescale Semiconductor Inc. + */ + +#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; + s32 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 |