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Diffstat (limited to 'drivers/net/ethernet/smsc/smc9194.h')
| -rw-r--r-- | drivers/net/ethernet/smsc/smc9194.h | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/drivers/net/ethernet/smsc/smc9194.h b/drivers/net/ethernet/smsc/smc9194.h new file mode 100644 index 000000000..cf69d0a5a --- /dev/null +++ b/drivers/net/ethernet/smsc/smc9194.h @@ -0,0 +1,241 @@ +/*------------------------------------------------------------------------ + . smc9194.h + . Copyright (C) 1996 by Erik Stahlman + . + . This software may be used and distributed according to the terms + . of the GNU General Public License, incorporated herein by reference. + . + . This file contains register information and access macros for + . the SMC91xxx chipset. + . + . Information contained in this file was obtained from the SMC91C94 + . manual from SMC. To get a copy, if you really want one, you can find + . information under www.smc.com in the components division. + . ( this thanks to advice from Donald Becker ). + . + . Authors + . Erik Stahlman ( erik@vt.edu ) + . + . History + . 01/06/96 Erik Stahlman moved definitions here from main .c file + . 01/19/96 Erik Stahlman polished this up some, and added better + . error handling + . + ---------------------------------------------------------------------------*/ +#ifndef _SMC9194_H_ +#define _SMC9194_H_ + +/* I want some simple types */ + +typedef unsigned char byte; +typedef unsigned short word; +typedef unsigned long int dword; + + +/* Because of bank switching, the SMC91xxx uses only 16 I/O ports */ + +#define SMC_IO_EXTENT 16 + + +/*--------------------------------------------------------------- + . + . A description of the SMC registers is probably in order here, + . although for details, the SMC datasheet is invaluable. + . + . Basically, the chip has 4 banks of registers ( 0 to 3 ), which + . are accessed by writing a number into the BANK_SELECT register + . ( I also use a SMC_SELECT_BANK macro for this ). + . + . The banks are configured so that for most purposes, bank 2 is all + . that is needed for simple run time tasks. + -----------------------------------------------------------------------*/ + +/* + . Bank Select Register: + . + . yyyy yyyy 0000 00xx + . xx = bank number + . yyyy yyyy = 0x33, for identification purposes. +*/ +#define BANK_SELECT 14 + +/* BANK 0 */ + +#define TCR 0 /* transmit control register */ +#define TCR_ENABLE 0x0001 /* if this is 1, we can transmit */ +#define TCR_FDUPLX 0x0800 /* receive packets sent out */ +#define TCR_STP_SQET 0x1000 /* stop transmitting if Signal quality error */ +#define TCR_MON_CNS 0x0400 /* monitors the carrier status */ +#define TCR_PAD_ENABLE 0x0080 /* pads short packets to 64 bytes */ + +#define TCR_CLEAR 0 /* do NOTHING */ +/* the normal settings for the TCR register : */ +/* QUESTION: do I want to enable padding of short packets ? */ +#define TCR_NORMAL TCR_ENABLE + + +#define EPH_STATUS 2 +#define ES_LINK_OK 0x4000 /* is the link integrity ok ? */ + +#define RCR 4 +#define RCR_SOFTRESET 0x8000 /* resets the chip */ +#define RCR_STRIP_CRC 0x200 /* strips CRC */ +#define RCR_ENABLE 0x100 /* IFF this is set, we can receive packets */ +#define RCR_ALMUL 0x4 /* receive all multicast packets */ +#define RCR_PROMISC 0x2 /* enable promiscuous mode */ + +/* the normal settings for the RCR register : */ +#define RCR_NORMAL (RCR_STRIP_CRC | RCR_ENABLE) +#define RCR_CLEAR 0x0 /* set it to a base state */ + +#define COUNTER 6 +#define MIR 8 +#define MCR 10 +/* 12 is reserved */ + +/* BANK 1 */ +#define CONFIG 0 +#define CFG_AUI_SELECT 0x100 +#define BASE 2 +#define ADDR0 4 +#define ADDR1 6 +#define ADDR2 8 +#define GENERAL 10 +#define CONTROL 12 +#define CTL_POWERDOWN 0x2000 +#define CTL_LE_ENABLE 0x80 +#define CTL_CR_ENABLE 0x40 +#define CTL_TE_ENABLE 0x0020 +#define CTL_AUTO_RELEASE 0x0800 +#define CTL_EPROM_ACCESS 0x0003 /* high if Eprom is being read */ + +/* BANK 2 */ +#define MMU_CMD 0 +#define MC_BUSY 1 /* only readable bit in the register */ +#define MC_NOP 0 +#define MC_ALLOC 0x20 /* or with number of 256 byte packets */ +#define MC_RESET 0x40 +#define MC_REMOVE 0x60 /* remove the current rx packet */ +#define MC_RELEASE 0x80 /* remove and release the current rx packet */ +#define MC_FREEPKT 0xA0 /* Release packet in PNR register */ +#define MC_ENQUEUE 0xC0 /* Enqueue the packet for transmit */ + +#define PNR_ARR 2 +#define FIFO_PORTS 4 + +#define FP_RXEMPTY 0x8000 +#define FP_TXEMPTY 0x80 + +#define POINTER 6 +#define PTR_READ 0x2000 +#define PTR_RCV 0x8000 +#define PTR_AUTOINC 0x4000 +#define PTR_AUTO_INC 0x0040 + +#define DATA_1 8 +#define DATA_2 10 +#define INTERRUPT 12 + +#define INT_MASK 13 +#define IM_RCV_INT 0x1 +#define IM_TX_INT 0x2 +#define IM_TX_EMPTY_INT 0x4 +#define IM_ALLOC_INT 0x8 +#define IM_RX_OVRN_INT 0x10 +#define IM_EPH_INT 0x20 +#define IM_ERCV_INT 0x40 /* not on SMC9192 */ + +/* BANK 3 */ +#define MULTICAST1 0 +#define MULTICAST2 2 +#define MULTICAST3 4 +#define MULTICAST4 6 +#define MGMT 8 +#define REVISION 10 /* ( hi: chip id low: rev # ) */ + + +/* this is NOT on SMC9192 */ +#define ERCV 12 + +#define CHIP_9190 3 +#define CHIP_9194 4 +#define CHIP_9195 5 +#define CHIP_91100 7 + +static const char * chip_ids[ 15 ] = { + NULL, NULL, NULL, + /* 3 */ "SMC91C90/91C92", + /* 4 */ "SMC91C94", + /* 5 */ "SMC91C95", + NULL, + /* 7 */ "SMC91C100", + /* 8 */ "SMC91C100FD", + NULL, NULL, NULL, + NULL, NULL, NULL}; + +/* + . Transmit status bits +*/ +#define TS_SUCCESS 0x0001 +#define TS_LOSTCAR 0x0400 +#define TS_LATCOL 0x0200 +#define TS_16COL 0x0010 + +/* + . Receive status bits +*/ +#define RS_ALGNERR 0x8000 +#define RS_BADCRC 0x2000 +#define RS_ODDFRAME 0x1000 +#define RS_TOOLONG 0x0800 +#define RS_TOOSHORT 0x0400 +#define RS_MULTICAST 0x0001 +#define RS_ERRORS (RS_ALGNERR | RS_BADCRC | RS_TOOLONG | RS_TOOSHORT) + +static const char * interfaces[ 2 ] = { "TP", "AUI" }; + +/*------------------------------------------------------------------------- + . I define some macros to make it easier to do somewhat common + . or slightly complicated, repeated tasks. + --------------------------------------------------------------------------*/ + +/* select a register bank, 0 to 3 */ + +#define SMC_SELECT_BANK(x) { outw( x, ioaddr + BANK_SELECT ); } + +/* define a small delay for the reset */ +#define SMC_DELAY() { inw( ioaddr + RCR );\ + inw( ioaddr + RCR );\ + inw( ioaddr + RCR ); } + +/* this enables an interrupt in the interrupt mask register */ +#define SMC_ENABLE_INT(x) {\ + unsigned char mask;\ + SMC_SELECT_BANK(2);\ + mask = inb( ioaddr + INT_MASK );\ + mask |= (x);\ + outb( mask, ioaddr + INT_MASK ); \ +} + +/* this disables an interrupt from the interrupt mask register */ + +#define SMC_DISABLE_INT(x) {\ + unsigned char mask;\ + SMC_SELECT_BANK(2);\ + mask = inb( ioaddr + INT_MASK );\ + mask &= ~(x);\ + outb( mask, ioaddr + INT_MASK ); \ +} + +/*---------------------------------------------------------------------- + . Define the interrupts that I want to receive from the card + . + . I want: + . IM_EPH_INT, for nasty errors + . IM_RCV_INT, for happy received packets + . IM_RX_OVRN_INT, because I have to kick the receiver + --------------------------------------------------------------------------*/ +#define SMC_INTERRUPT_MASK (IM_EPH_INT | IM_RX_OVRN_INT | IM_RCV_INT) + +#endif /* _SMC_9194_H_ */ + |