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0fec65130b
Simplify and make consistent the current uses of inb/outb
by using the newly introduced arcnet_<I/O> equivalents.
o Add new #defines for register offsets
There is an register offset, 8, that is unnamed and used as-is.
o Remove old #defines that included the ioaddr
o Remove obfuscating macros by expanding them in-place where appropriate
o Create static inline com20020_set_subaddress for the SET_SUBADR macro
There is an unused arcnet config entry CONFIGSA100_CT6001 which added a
special #define BUS_ALIGN which was introduced but never used in fullhist git
tree commit 22cfce4b82b0 ("[ARCNET]: Fixes.") in Nov 2004 for Linux v2.6.10.
This BUS_ALIGN #define tries to allow 8 bit devices to work on a 16 bit
bus by aligning addresses to 16 bit boundaries.
Move this currently unused CONFIG_SA1100_CT6001 BUS_ALIGN macro from
com20020.h to arcdevice.h.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*
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* Linux ARCnet driver - COM20020 chipset support - function declarations
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*
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* Written 1997 by David Woodhouse.
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* Written 1994-1999 by Avery Pennarun.
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* Derived from skeleton.c by Donald Becker.
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*
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* Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
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* for sponsoring the further development of this driver.
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*
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* **********************
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*
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* The original copyright of skeleton.c was as follows:
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*
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* skeleton.c Written 1993 by Donald Becker.
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* Copyright 1993 United States Government as represented by the
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* Director, National Security Agency. This software may only be used
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* and distributed according to the terms of the GNU General Public License as
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* modified by SRC, incorporated herein by reference.
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*
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* **********************
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*
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* For more details, see drivers/net/arcnet.c
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*
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* **********************
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*/
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#ifndef __COM20020_H
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#define __COM20020_H
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int com20020_check(struct net_device *dev);
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int com20020_found(struct net_device *dev, int shared);
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extern const struct net_device_ops com20020_netdev_ops;
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/* The number of low I/O ports used by the card. */
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#define ARCNET_TOTAL_SIZE 8
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#define PLX_PCI_MAX_CARDS 2
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struct com20020_pci_channel_map {
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u32 bar;
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u32 offset;
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u32 size; /* 0x00 - auto, e.g. length of entire bar */
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};
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struct com20020_pci_card_info {
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const char *name;
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int devcount;
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struct com20020_pci_channel_map chan_map_tbl[PLX_PCI_MAX_CARDS];
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unsigned int flags;
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};
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struct com20020_priv {
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struct com20020_pci_card_info *ci;
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struct list_head list_dev;
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};
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struct com20020_dev {
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struct list_head list;
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struct net_device *dev;
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struct com20020_priv *pci_priv;
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int index;
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};
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#define COM20020_REG_W_INTMASK 0 /* writable */
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#define COM20020_REG_R_STATUS 0 /* readable */
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#define COM20020_REG_W_COMMAND 1 /* standard arcnet commands */
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#define COM20020_REG_R_DIAGSTAT 1 /* diagnostic status */
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#define COM20020_REG_W_ADDR_HI 2 /* control for IO-mapped memory */
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#define COM20020_REG_W_ADDR_LO 3
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#define COM20020_REG_RW_MEMDATA 4 /* data port for IO-mapped memory */
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#define COM20020_REG_W_SUBADR 5 /* the extended port _XREG refers to */
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#define COM20020_REG_W_CONFIG 6 /* configuration */
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#define COM20020_REG_W_XREG 7 /* extra
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* (indexed by _CONFIG or _SUBADDR)
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*/
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/* in the ADDR_HI register */
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#define RDDATAflag 0x80 /* next access is a read (not a write) */
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/* in the DIAGSTAT register */
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#define NEWNXTIDflag 0x02 /* ID to which token is passed has changed */
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/* in the CONFIG register */
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#define RESETcfg 0x80 /* put card in reset state */
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#define TXENcfg 0x20 /* enable TX */
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/* in SETUP register */
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#define PROMISCset 0x10 /* enable RCV_ALL */
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#define P1MODE 0x80 /* enable P1-MODE for Backplane */
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#define SLOWARB 0x01 /* enable Slow Arbitration for >=5Mbps */
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/* COM2002x */
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#define SUB_TENTATIVE 0 /* tentative node ID */
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#define SUB_NODE 1 /* node ID */
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#define SUB_SETUP1 2 /* various options */
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#define SUB_TEST 3 /* test/diag register */
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/* COM20022 only */
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#define SUB_SETUP2 4 /* sundry options */
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#define SUB_BUSCTL 5 /* bus control options */
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#define SUB_DMACOUNT 6 /* DMA count options */
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static inline void com20020_set_subaddress(struct arcnet_local *lp,
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int ioaddr, int val)
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{
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if (val < 4) {
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lp->config = (lp->config & ~0x03) | val;
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arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG);
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} else {
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arcnet_outb(val, ioaddr, COM20020_REG_W_SUBADR);
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}
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}
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#endif /* __COM20020_H */
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