smc9194.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:7k
- /*------------------------------------------------------------------------
- . 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_PAD_ENABLE 0x0080 /* pads short packets to 64 bytes */
- #define TCR_MON_CNS 0x0400 /* monitors the carrier status */
- #define TCR_FDUPLX 0x0800 /* receive packets sent out */
- #define TCR_STP_SQET 0x1000 /* stop transmitting if Signal quality error */
- #define TCR_FDSE 0x8000 /* full duplex, switched ethernet */
- #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_SELECT 0x0004
- #define CTL_EPROM_RELOAD 0x0002
- #define CTL_EPROM_STORE 0x0001
- #define CTL_EPROM_ACCESS (CTL_EPROM_RELOAD | CTL_EPROM_STORE) /* 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 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
- /*
- . 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)
- /*
- * SMC91C96 ethernet config and status registers.
- * These are in the "attribute" space.
- */
- #define ECOR 0x8000
- #define ECOR_RESET 0x80
- #define ECOR_LEVEL_IRQ 0x40
- #define ECOR_WR_ATTRIB 0x04
- #define ECOR_ENABLE 0x01
- #define ECSR 0x8002
- #define ECSR_IOIS8 0x20
- #define ECSR_PWRDWN 0x04
- #define ECSR_INT 0x02
- /*----------------------------------------------------------------------
- . 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)
- /* store this information for the driver.. */
- struct smc_local {
- /*
- these are things that the kernel wants me to keep, so users
- can find out semi-useless statistics of how well the card is
- performing
- */
- struct net_device_stats stats;
- /*
- If I have to wait until memory is available to send
- a packet, I will store the skbuff here, until I get the
- desired memory. Then, I'll send it out and free it.
- */
- struct sk_buff * saved_skb;
- /*
- . This keeps track of how many packets that I have
- . sent out. When an TX_EMPTY interrupt comes, I know
- . that all of these have been sent.
- */
- int packets_waiting;
- /*
- . Interface status. These correspond to the parameters
- . in the ethtool_cmd structure.
- */
- u8 duplex;
- u8 port;
- };
- #endif /* _SMC_9194_H_ */