/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* linux/drivers/acorn/net/ether1.h
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*
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* Copyright (C) 1996 Russell King
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*
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* Network driver for Acorn Ether1 cards.
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*/
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#ifndef _LINUX_ether1_H
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#define _LINUX_ether1_H
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#ifdef __ETHER1_C
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/* use 0 for production, 1 for verification, >2 for debug */
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#ifndef NET_DEBUG
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#define NET_DEBUG 0
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#endif
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#define priv(dev) ((struct ether1_priv *)netdev_priv(dev))
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/* Page register */
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#define REG_PAGE (priv(dev)->base + 0x0000)
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/* Control register */
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#define REG_CONTROL (priv(dev)->base + 0x0004)
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#define CTRL_RST 0x01
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#define CTRL_LOOPBACK 0x02
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#define CTRL_CA 0x04
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#define CTRL_ACK 0x08
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#define ETHER1_RAM (priv(dev)->base + 0x2000)
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/* HW address */
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#define IDPROM_ADDRESS (priv(dev)->base + 0x0024)
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struct ether1_priv {
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void __iomem *base;
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unsigned int tx_link;
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unsigned int tx_head;
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volatile unsigned int tx_tail;
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volatile unsigned int rx_head;
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volatile unsigned int rx_tail;
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unsigned char bus_type;
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unsigned char resetting;
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unsigned char initialising : 1;
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unsigned char restart : 1;
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};
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#define I82586_NULL (-1)
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typedef struct { /* tdr */
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unsigned short tdr_status;
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unsigned short tdr_command;
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unsigned short tdr_link;
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unsigned short tdr_result;
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#define TDR_TIME (0x7ff)
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#define TDR_SHORT (1 << 12)
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#define TDR_OPEN (1 << 13)
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#define TDR_XCVRPROB (1 << 14)
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#define TDR_LNKOK (1 << 15)
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} tdr_t;
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typedef struct { /* transmit */
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unsigned short tx_status;
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unsigned short tx_command;
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unsigned short tx_link;
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unsigned short tx_tbdoffset;
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} tx_t;
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typedef struct { /* tbd */
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unsigned short tbd_opts;
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#define TBD_CNT (0x3fff)
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#define TBD_EOL (1 << 15)
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unsigned short tbd_link;
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unsigned short tbd_bufl;
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unsigned short tbd_bufh;
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} tbd_t;
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typedef struct { /* rfd */
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unsigned short rfd_status;
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#define RFD_NOEOF (1 << 6)
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#define RFD_FRAMESHORT (1 << 7)
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#define RFD_DMAOVRN (1 << 8)
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#define RFD_NORESOURCES (1 << 9)
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#define RFD_ALIGNERROR (1 << 10)
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#define RFD_CRCERROR (1 << 11)
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#define RFD_OK (1 << 13)
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#define RFD_FDCONSUMED (1 << 14)
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#define RFD_COMPLETE (1 << 15)
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unsigned short rfd_command;
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#define RFD_CMDSUSPEND (1 << 14)
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#define RFD_CMDEL (1 << 15)
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unsigned short rfd_link;
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unsigned short rfd_rbdoffset;
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unsigned char rfd_dest[6];
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unsigned char rfd_src[6];
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unsigned short rfd_len;
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} rfd_t;
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typedef struct { /* rbd */
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unsigned short rbd_status;
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#define RBD_ACNT (0x3fff)
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#define RBD_ACNTVALID (1 << 14)
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#define RBD_EOF (1 << 15)
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unsigned short rbd_link;
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unsigned short rbd_bufl;
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unsigned short rbd_bufh;
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unsigned short rbd_len;
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} rbd_t;
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typedef struct { /* nop */
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unsigned short nop_status;
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unsigned short nop_command;
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unsigned short nop_link;
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} nop_t;
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typedef struct { /* set multicast */
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unsigned short mc_status;
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unsigned short mc_command;
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unsigned short mc_link;
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unsigned short mc_cnt;
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unsigned char mc_addrs[1][6];
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} mc_t;
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typedef struct { /* set address */
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unsigned short sa_status;
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unsigned short sa_command;
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unsigned short sa_link;
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unsigned char sa_addr[6];
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} sa_t;
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typedef struct { /* config command */
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unsigned short cfg_status;
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unsigned short cfg_command;
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unsigned short cfg_link;
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unsigned char cfg_bytecnt; /* size foll data: 4 - 12 */
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unsigned char cfg_fifolim; /* FIFO threshold */
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unsigned char cfg_byte8;
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#define CFG8_SRDY (1 << 6)
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#define CFG8_SAVEBADF (1 << 7)
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unsigned char cfg_byte9;
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#define CFG9_ADDRLEN(x) (x)
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#define CFG9_ADDRLENBUF (1 << 3)
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#define CFG9_PREAMB2 (0 << 4)
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#define CFG9_PREAMB4 (1 << 4)
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#define CFG9_PREAMB8 (2 << 4)
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#define CFG9_PREAMB16 (3 << 4)
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#define CFG9_ILOOPBACK (1 << 6)
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#define CFG9_ELOOPBACK (1 << 7)
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unsigned char cfg_byte10;
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#define CFG10_LINPRI(x) (x)
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#define CFG10_ACR(x) (x << 4)
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#define CFG10_BOFMET (1 << 7)
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unsigned char cfg_ifs;
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unsigned char cfg_slotl;
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unsigned char cfg_byte13;
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#define CFG13_SLOTH(x) (x)
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#define CFG13_RETRY(x) (x << 4)
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unsigned char cfg_byte14;
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#define CFG14_PROMISC (1 << 0)
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#define CFG14_DISBRD (1 << 1)
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#define CFG14_MANCH (1 << 2)
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#define CFG14_TNCRS (1 << 3)
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#define CFG14_NOCRC (1 << 4)
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#define CFG14_CRC16 (1 << 5)
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#define CFG14_BTSTF (1 << 6)
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#define CFG14_FLGPAD (1 << 7)
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unsigned char cfg_byte15;
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#define CFG15_CSTF(x) (x)
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#define CFG15_ICSS (1 << 3)
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#define CFG15_CDTF(x) (x << 4)
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#define CFG15_ICDS (1 << 7)
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unsigned short cfg_minfrmlen;
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} cfg_t;
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typedef struct { /* scb */
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unsigned short scb_status; /* status of 82586 */
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#define SCB_STRXMASK (7 << 4) /* Receive unit status */
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#define SCB_STRXIDLE (0 << 4) /* Idle */
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#define SCB_STRXSUSP (1 << 4) /* Suspended */
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#define SCB_STRXNRES (2 << 4) /* No resources */
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#define SCB_STRXRDY (4 << 4) /* Ready */
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#define SCB_STCUMASK (7 << 8) /* Command unit status */
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#define SCB_STCUIDLE (0 << 8) /* Idle */
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#define SCB_STCUSUSP (1 << 8) /* Suspended */
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#define SCB_STCUACTV (2 << 8) /* Active */
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#define SCB_STRNR (1 << 12) /* Receive unit not ready */
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#define SCB_STCNA (1 << 13) /* Command unit not ready */
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#define SCB_STFR (1 << 14) /* Frame received */
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#define SCB_STCX (1 << 15) /* Command completed */
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unsigned short scb_command; /* Next command */
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#define SCB_CMDRXSTART (1 << 4) /* Start (at rfa_offset) */
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#define SCB_CMDRXRESUME (2 << 4) /* Resume reception */
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#define SCB_CMDRXSUSPEND (3 << 4) /* Suspend reception */
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#define SCB_CMDRXABORT (4 << 4) /* Abort reception */
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#define SCB_CMDCUCSTART (1 << 8) /* Start (at cbl_offset) */
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#define SCB_CMDCUCRESUME (2 << 8) /* Resume execution */
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#define SCB_CMDCUCSUSPEND (3 << 8) /* Suspend execution */
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#define SCB_CMDCUCABORT (4 << 8) /* Abort execution */
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#define SCB_CMDACKRNR (1 << 12) /* Ack RU not ready */
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#define SCB_CMDACKCNA (1 << 13) /* Ack CU not ready */
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#define SCB_CMDACKFR (1 << 14) /* Ack Frame received */
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#define SCB_CMDACKCX (1 << 15) /* Ack Command complete */
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unsigned short scb_cbl_offset; /* Offset of first command unit */
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unsigned short scb_rfa_offset; /* Offset of first receive frame area */
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unsigned short scb_crc_errors; /* Properly aligned frame with CRC error*/
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unsigned short scb_aln_errors; /* Misaligned frames */
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unsigned short scb_rsc_errors; /* Frames lost due to no space */
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unsigned short scb_ovn_errors; /* Frames lost due to slow bus */
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} scb_t;
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typedef struct { /* iscp */
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unsigned short iscp_busy; /* set by CPU before CA */
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unsigned short iscp_offset; /* offset of SCB */
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unsigned short iscp_basel; /* base of SCB */
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unsigned short iscp_baseh;
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} iscp_t;
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/* this address must be 0xfff6 */
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typedef struct { /* scp */
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unsigned short scp_sysbus; /* bus size */
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#define SCP_SY_16BBUS 0x00
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#define SCP_SY_8BBUS 0x01
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unsigned short scp_junk[2]; /* junk */
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unsigned short scp_iscpl; /* lower 16 bits of iscp */
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unsigned short scp_iscph; /* upper 16 bits of iscp */
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} scp_t;
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/* commands */
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#define CMD_NOP 0
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#define CMD_SETADDRESS 1
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#define CMD_CONFIG 2
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#define CMD_SETMULTICAST 3
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#define CMD_TX 4
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#define CMD_TDR 5
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#define CMD_DUMP 6
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#define CMD_DIAGNOSE 7
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#define CMD_MASK 7
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#define CMD_INTR (1 << 13)
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#define CMD_SUSP (1 << 14)
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#define CMD_EOL (1 << 15)
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#define STAT_COLLISIONS (15)
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#define STAT_COLLEXCESSIVE (1 << 5)
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#define STAT_COLLAFTERTX (1 << 6)
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#define STAT_TXDEFERRED (1 << 7)
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#define STAT_TXSLOWDMA (1 << 8)
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#define STAT_TXLOSTCTS (1 << 9)
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#define STAT_NOCARRIER (1 << 10)
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#define STAT_FAIL (1 << 11)
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#define STAT_ABORTED (1 << 12)
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#define STAT_OK (1 << 13)
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#define STAT_BUSY (1 << 14)
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#define STAT_COMPLETE (1 << 15)
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#endif
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#endif
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/*
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* Ether1 card definitions:
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*
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* FAST accesses:
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* +0 Page register
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* 16 pages
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* +4 Control
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* '1' = reset
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* '2' = loopback
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* '4' = CA
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* '8' = int ack
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*
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* RAM at address + 0x2000
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* Pod. Prod id = 3
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* Words after ID block [base + 8 words]
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* +0 pcb issue (0x0c and 0xf3 invalid)
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* +1 - +6 eth hw address
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*/
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