1 /* 2 * Linux ARCnet driver - COM20020 chipset support - function declarations 3 * 4 * Written 1997 by David Woodhouse. 5 * Written 1994-1999 by Avery Pennarun. 6 * Derived from skeleton.c by Donald Becker. 7 * 8 * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com) 9 * for sponsoring the further development of this driver. 10 * 11 * ********************** 12 * 13 * The original copyright of skeleton.c was as follows: 14 * 15 * skeleton.c Written 1993 by Donald Becker. 16 * Copyright 1993 United States Government as represented by the 17 * Director, National Security Agency. This software may only be used 18 * and distributed according to the terms of the GNU General Public License as 19 * modified by SRC, incorporated herein by reference. 20 * 21 * ********************** 22 * 23 * For more details, see drivers/net/arcnet.c 24 * 25 * ********************** 26 */ 27 #ifndef __COM20020_H 28 #define __COM20020_H 29 30 int com20020_check(struct net_device *dev); 31 int com20020_found(struct net_device *dev, int shared); 32 extern const struct net_device_ops com20020_netdev_ops; 33 34 /* The number of low I/O ports used by the card. */ 35 #define ARCNET_TOTAL_SIZE 8 36 37 #define PLX_PCI_MAX_CARDS 2 38 39 struct com20020_pci_channel_map { 40 u32 bar; 41 u32 offset; 42 u32 size; /* 0x00 - auto, e.g. length of entire bar */ 43 }; 44 45 struct com20020_pci_card_info { 46 const char *name; 47 int devcount; 48 49 struct com20020_pci_channel_map chan_map_tbl[PLX_PCI_MAX_CARDS]; 50 51 unsigned int flags; 52 }; 53 54 struct com20020_priv { 55 struct com20020_pci_card_info *ci; 56 struct list_head list_dev; 57 }; 58 59 struct com20020_dev { 60 struct list_head list; 61 struct net_device *dev; 62 63 struct com20020_priv *pci_priv; 64 int index; 65 }; 66 67 #define COM20020_REG_W_INTMASK 0 /* writable */ 68 #define COM20020_REG_R_STATUS 0 /* readable */ 69 #define COM20020_REG_W_COMMAND 1 /* standard arcnet commands */ 70 #define COM20020_REG_R_DIAGSTAT 1 /* diagnostic status */ 71 #define COM20020_REG_W_ADDR_HI 2 /* control for IO-mapped memory */ 72 #define COM20020_REG_W_ADDR_LO 3 73 #define COM20020_REG_RW_MEMDATA 4 /* data port for IO-mapped memory */ 74 #define COM20020_REG_W_SUBADR 5 /* the extended port _XREG refers to */ 75 #define COM20020_REG_W_CONFIG 6 /* configuration */ 76 #define COM20020_REG_W_XREG 7 /* extra 77 * (indexed by _CONFIG or _SUBADDR) 78 */ 79 80 /* in the ADDR_HI register */ 81 #define RDDATAflag 0x80 /* next access is a read (not a write) */ 82 83 /* in the DIAGSTAT register */ 84 #define NEWNXTIDflag 0x02 /* ID to which token is passed has changed */ 85 86 /* in the CONFIG register */ 87 #define RESETcfg 0x80 /* put card in reset state */ 88 #define TXENcfg 0x20 /* enable TX */ 89 #define XTOcfg(x) ((x) << 3) /* extended timeout */ 90 91 /* in SETUP register */ 92 #define PROMISCset 0x10 /* enable RCV_ALL */ 93 #define P1MODE 0x80 /* enable P1-MODE for Backplane */ 94 #define SLOWARB 0x01 /* enable Slow Arbitration for >=5Mbps */ 95 96 /* COM2002x */ 97 #define SUB_TENTATIVE 0 /* tentative node ID */ 98 #define SUB_NODE 1 /* node ID */ 99 #define SUB_SETUP1 2 /* various options */ 100 #define SUB_TEST 3 /* test/diag register */ 101 102 /* COM20022 only */ 103 #define SUB_SETUP2 4 /* sundry options */ 104 #define SUB_BUSCTL 5 /* bus control options */ 105 #define SUB_DMACOUNT 6 /* DMA count options */ 106 107 static inline void com20020_set_subaddress(struct arcnet_local *lp, 108 int ioaddr, int val) 109 { 110 if (val < 4) { 111 lp->config = (lp->config & ~0x03) | val; 112 arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG); 113 } else { 114 arcnet_outb(val, ioaddr, COM20020_REG_W_SUBADR); 115 } 116 } 117 118 #endif /* __COM20020_H */ 119