mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-29 20:30:35 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
355 lines
11 KiB
C
355 lines
11 KiB
C
#ifndef _3c523_INCLUDE_
|
|
#define _3c523_INCLUDE_
|
|
/*
|
|
This is basically a hacked version of ni52.h, for the 3c523
|
|
Etherlink/MC.
|
|
*/
|
|
|
|
/*
|
|
* Intel i82586 Ethernet definitions
|
|
*
|
|
* This is an extension to the Linux operating system, and is covered by the
|
|
* same GNU General Public License that covers that work.
|
|
*
|
|
* Copyright 1995 by Chris Beauregard (cpbeaure@undergrad.math.uwaterloo.ca)
|
|
*
|
|
* See 3c523.c for details.
|
|
*
|
|
* $Header: /home/chrisb/linux-1.2.13-3c523/drivers/net/RCS/3c523.h,v 1.6 1996/01/20 05:09:00 chrisb Exp chrisb $
|
|
*/
|
|
|
|
/*
|
|
* where to find the System Configuration Pointer (SCP)
|
|
*/
|
|
#define SCP_DEFAULT_ADDRESS 0xfffff4
|
|
|
|
|
|
/*
|
|
* System Configuration Pointer Struct
|
|
*/
|
|
|
|
struct scp_struct
|
|
{
|
|
unsigned short zero_dum0; /* has to be zero */
|
|
unsigned char sysbus; /* 0=16Bit,1=8Bit */
|
|
unsigned char zero_dum1; /* has to be zero for 586 */
|
|
unsigned short zero_dum2;
|
|
unsigned short zero_dum3;
|
|
char *iscp; /* pointer to the iscp-block */
|
|
};
|
|
|
|
|
|
/*
|
|
* Intermediate System Configuration Pointer (ISCP)
|
|
*/
|
|
struct iscp_struct
|
|
{
|
|
unsigned char busy; /* 586 clears after successful init */
|
|
unsigned char zero_dummy; /* hast to be zero */
|
|
unsigned short scb_offset; /* pointeroffset to the scb_base */
|
|
char *scb_base; /* base-address of all 16-bit offsets */
|
|
};
|
|
|
|
/*
|
|
* System Control Block (SCB)
|
|
*/
|
|
struct scb_struct
|
|
{
|
|
unsigned short status; /* status word */
|
|
unsigned short cmd; /* command word */
|
|
unsigned short cbl_offset; /* pointeroffset, command block list */
|
|
unsigned short rfa_offset; /* pointeroffset, receive frame area */
|
|
unsigned short crc_errs; /* CRC-Error counter */
|
|
unsigned short aln_errs; /* alignmenterror counter */
|
|
unsigned short rsc_errs; /* Resourceerror counter */
|
|
unsigned short ovrn_errs; /* OVerrunerror counter */
|
|
};
|
|
|
|
/*
|
|
* possible command values for the command word
|
|
*/
|
|
#define RUC_MASK 0x0070 /* mask for RU commands */
|
|
#define RUC_NOP 0x0000 /* NOP-command */
|
|
#define RUC_START 0x0010 /* start RU */
|
|
#define RUC_RESUME 0x0020 /* resume RU after suspend */
|
|
#define RUC_SUSPEND 0x0030 /* suspend RU */
|
|
#define RUC_ABORT 0x0040 /* abort receiver operation immediately */
|
|
|
|
#define CUC_MASK 0x0700 /* mask for CU command */
|
|
#define CUC_NOP 0x0000 /* NOP-command */
|
|
#define CUC_START 0x0100 /* start execution of 1. cmd on the CBL */
|
|
#define CUC_RESUME 0x0200 /* resume after suspend */
|
|
#define CUC_SUSPEND 0x0300 /* Suspend CU */
|
|
#define CUC_ABORT 0x0400 /* abort command operation immediately */
|
|
|
|
#define ACK_MASK 0xf000 /* mask for ACK command */
|
|
#define ACK_CX 0x8000 /* acknowledges STAT_CX */
|
|
#define ACK_FR 0x4000 /* ack. STAT_FR */
|
|
#define ACK_CNA 0x2000 /* ack. STAT_CNA */
|
|
#define ACK_RNR 0x1000 /* ack. STAT_RNR */
|
|
|
|
/*
|
|
* possible status values for the status word
|
|
*/
|
|
#define STAT_MASK 0xf000 /* mask for cause of interrupt */
|
|
#define STAT_CX 0x8000 /* CU finished cmd with its I bit set */
|
|
#define STAT_FR 0x4000 /* RU finished receiving a frame */
|
|
#define STAT_CNA 0x2000 /* CU left active state */
|
|
#define STAT_RNR 0x1000 /* RU left ready state */
|
|
|
|
#define CU_STATUS 0x700 /* CU status, 0=idle */
|
|
#define CU_SUSPEND 0x100 /* CU is suspended */
|
|
#define CU_ACTIVE 0x200 /* CU is active */
|
|
|
|
#define RU_STATUS 0x70 /* RU status, 0=idle */
|
|
#define RU_SUSPEND 0x10 /* RU suspended */
|
|
#define RU_NOSPACE 0x20 /* RU no resources */
|
|
#define RU_READY 0x40 /* RU is ready */
|
|
|
|
/*
|
|
* Receive Frame Descriptor (RFD)
|
|
*/
|
|
struct rfd_struct
|
|
{
|
|
unsigned short status; /* status word */
|
|
unsigned short last; /* Bit15,Last Frame on List / Bit14,suspend */
|
|
unsigned short next; /* linkoffset to next RFD */
|
|
unsigned short rbd_offset; /* pointeroffset to RBD-buffer */
|
|
unsigned char dest[6]; /* ethernet-address, destination */
|
|
unsigned char source[6]; /* ethernet-address, source */
|
|
unsigned short length; /* 802.3 frame-length */
|
|
unsigned short zero_dummy; /* dummy */
|
|
};
|
|
|
|
#define RFD_LAST 0x8000 /* last: last rfd in the list */
|
|
#define RFD_SUSP 0x4000 /* last: suspend RU after */
|
|
#define RFD_ERRMASK 0x0fe1 /* status: errormask */
|
|
#define RFD_MATCHADD 0x0002 /* status: Destinationaddress !matches IA */
|
|
#define RFD_RNR 0x0200 /* status: receiver out of resources */
|
|
|
|
/*
|
|
* Receive Buffer Descriptor (RBD)
|
|
*/
|
|
struct rbd_struct
|
|
{
|
|
unsigned short status; /* status word,number of used bytes in buff */
|
|
unsigned short next; /* pointeroffset to next RBD */
|
|
char *buffer; /* receive buffer address pointer */
|
|
unsigned short size; /* size of this buffer */
|
|
unsigned short zero_dummy; /* dummy */
|
|
};
|
|
|
|
#define RBD_LAST 0x8000 /* last buffer */
|
|
#define RBD_USED 0x4000 /* this buffer has data */
|
|
#define RBD_MASK 0x3fff /* size-mask for length */
|
|
|
|
/*
|
|
* Statusvalues for Commands/RFD
|
|
*/
|
|
#define STAT_COMPL 0x8000 /* status: frame/command is complete */
|
|
#define STAT_BUSY 0x4000 /* status: frame/command is busy */
|
|
#define STAT_OK 0x2000 /* status: frame/command is ok */
|
|
|
|
/*
|
|
* Action-Commands
|
|
*/
|
|
#define CMD_NOP 0x0000 /* NOP */
|
|
#define CMD_IASETUP 0x0001 /* initial address setup command */
|
|
#define CMD_CONFIGURE 0x0002 /* configure command */
|
|
#define CMD_MCSETUP 0x0003 /* MC setup command */
|
|
#define CMD_XMIT 0x0004 /* transmit command */
|
|
#define CMD_TDR 0x0005 /* time domain reflectometer (TDR) command */
|
|
#define CMD_DUMP 0x0006 /* dump command */
|
|
#define CMD_DIAGNOSE 0x0007 /* diagnose command */
|
|
|
|
/*
|
|
* Action command bits
|
|
*/
|
|
#define CMD_LAST 0x8000 /* indicates last command in the CBL */
|
|
#define CMD_SUSPEND 0x4000 /* suspend CU after this CB */
|
|
#define CMD_INT 0x2000 /* generate interrupt after execution */
|
|
|
|
/*
|
|
* NOP - command
|
|
*/
|
|
struct nop_cmd_struct
|
|
{
|
|
unsigned short cmd_status; /* status of this command */
|
|
unsigned short cmd_cmd; /* the command itself (+bits) */
|
|
unsigned short cmd_link; /* offsetpointer to next command */
|
|
};
|
|
|
|
/*
|
|
* IA Setup command
|
|
*/
|
|
struct iasetup_cmd_struct
|
|
{
|
|
unsigned short cmd_status;
|
|
unsigned short cmd_cmd;
|
|
unsigned short cmd_link;
|
|
unsigned char iaddr[6];
|
|
};
|
|
|
|
/*
|
|
* Configure command
|
|
*/
|
|
struct configure_cmd_struct
|
|
{
|
|
unsigned short cmd_status;
|
|
unsigned short cmd_cmd;
|
|
unsigned short cmd_link;
|
|
unsigned char byte_cnt; /* size of the config-cmd */
|
|
unsigned char fifo; /* fifo/recv monitor */
|
|
unsigned char sav_bf; /* save bad frames (bit7=1)*/
|
|
unsigned char adr_len; /* adr_len(0-2),al_loc(3),pream(4-5),loopbak(6-7)*/
|
|
unsigned char priority; /* lin_prio(0-2),exp_prio(4-6),bof_metd(7) */
|
|
unsigned char ifs; /* inter frame spacing */
|
|
unsigned char time_low; /* slot time low */
|
|
unsigned char time_high; /* slot time high(0-2) and max. retries(4-7) */
|
|
unsigned char promisc; /* promisc-mode(0) , et al (1-7) */
|
|
unsigned char carr_coll; /* carrier(0-3)/collision(4-7) stuff */
|
|
unsigned char fram_len; /* minimal frame len */
|
|
unsigned char dummy; /* dummy */
|
|
};
|
|
|
|
/*
|
|
* Multicast Setup command
|
|
*/
|
|
struct mcsetup_cmd_struct
|
|
{
|
|
unsigned short cmd_status;
|
|
unsigned short cmd_cmd;
|
|
unsigned short cmd_link;
|
|
unsigned short mc_cnt; /* number of bytes in the MC-List */
|
|
unsigned char mc_list[0][6]; /* pointer to 6 bytes entries */
|
|
};
|
|
|
|
/*
|
|
* transmit command
|
|
*/
|
|
struct transmit_cmd_struct
|
|
{
|
|
unsigned short cmd_status;
|
|
unsigned short cmd_cmd;
|
|
unsigned short cmd_link;
|
|
unsigned short tbd_offset; /* pointeroffset to TBD */
|
|
unsigned char dest[6]; /* destination address of the frame */
|
|
unsigned short length; /* user defined: 802.3 length / Ether type */
|
|
};
|
|
|
|
#define TCMD_ERRMASK 0x0fa0
|
|
#define TCMD_MAXCOLLMASK 0x000f
|
|
#define TCMD_MAXCOLL 0x0020
|
|
#define TCMD_HEARTBEAT 0x0040
|
|
#define TCMD_DEFERRED 0x0080
|
|
#define TCMD_UNDERRUN 0x0100
|
|
#define TCMD_LOSTCTS 0x0200
|
|
#define TCMD_NOCARRIER 0x0400
|
|
#define TCMD_LATECOLL 0x0800
|
|
|
|
struct tdr_cmd_struct
|
|
{
|
|
unsigned short cmd_status;
|
|
unsigned short cmd_cmd;
|
|
unsigned short cmd_link;
|
|
unsigned short status;
|
|
};
|
|
|
|
#define TDR_LNK_OK 0x8000 /* No link problem identified */
|
|
#define TDR_XCVR_PRB 0x4000 /* indicates a transceiver problem */
|
|
#define TDR_ET_OPN 0x2000 /* open, no correct termination */
|
|
#define TDR_ET_SRT 0x1000 /* TDR detected a short circuit */
|
|
#define TDR_TIMEMASK 0x07ff /* mask for the time field */
|
|
|
|
/*
|
|
* Transmit Buffer Descriptor (TBD)
|
|
*/
|
|
struct tbd_struct
|
|
{
|
|
unsigned short size; /* size + EOF-Flag(15) */
|
|
unsigned short next; /* pointeroffset to next TBD */
|
|
char *buffer; /* pointer to buffer */
|
|
};
|
|
|
|
#define TBD_LAST 0x8000 /* EOF-Flag, indicates last buffer in list */
|
|
|
|
/*************************************************************************/
|
|
/*
|
|
Verbatim from the Crynwyr stuff:
|
|
|
|
The 3c523 responds with adapter code 0x6042 at slot
|
|
registers xxx0 and xxx1. The setup register is at xxx2 and
|
|
contains the following bits:
|
|
|
|
0: card enable
|
|
2,1: csr address select
|
|
00 = 0300
|
|
01 = 1300
|
|
10 = 2300
|
|
11 = 3300
|
|
4,3: shared memory address select
|
|
00 = 0c0000
|
|
01 = 0c8000
|
|
10 = 0d0000
|
|
11 = 0d8000
|
|
5: set to disable on-board thinnet
|
|
7,6: (read-only) shows selected irq
|
|
00 = 12
|
|
01 = 7
|
|
10 = 3
|
|
11 = 9
|
|
|
|
The interrupt-select register is at xxx3 and uses one bit per irq.
|
|
|
|
0: int 12
|
|
1: int 7
|
|
2: int 3
|
|
3: int 9
|
|
|
|
Again, the documentation stresses that the setup register
|
|
should never be written. The interrupt-select register may be
|
|
written with the value corresponding to bits 7.6 in
|
|
the setup register to insure corret setup.
|
|
*/
|
|
|
|
/* Offsets from the base I/O address. */
|
|
#define ELMC_SA 0 /* first 6 bytes are IEEE network address */
|
|
#define ELMC_CTRL 6 /* control & status register */
|
|
#define ELMC_REVISION 7 /* revision register, first 4 bits only */
|
|
#define ELMC_IO_EXTENT 8
|
|
|
|
/* these are the bit selects for the port register 2 */
|
|
#define ELMC_STATUS_ENABLED 0x01
|
|
#define ELMC_STATUS_CSR_SELECT 0x06
|
|
#define ELMC_STATUS_MEMORY_SELECT 0x18
|
|
#define ELMC_STATUS_DISABLE_THIN 0x20
|
|
#define ELMC_STATUS_IRQ_SELECT 0xc0
|
|
|
|
/* this is the card id used in the detection code. You might recognize
|
|
it from @6042.adf */
|
|
#define ELMC_MCA_ID 0x6042
|
|
|
|
/*
|
|
The following define the bits for the control & status register
|
|
|
|
The bank select registers can be used if more than 16K of memory is
|
|
on the card. For some stupid reason, bank 3 is the one for the
|
|
bottom 16K, and the card defaults to bank 0. So we have to set the
|
|
bank to 3 before the card will even think of operating. To get bank
|
|
3, set BS0 and BS1 to high (of course...)
|
|
*/
|
|
#define ELMC_CTRL_BS0 0x01 /* RW bank select */
|
|
#define ELMC_CTRL_BS1 0x02 /* RW bank select */
|
|
#define ELMC_CTRL_INTE 0x04 /* RW interrupt enable, assert high */
|
|
#define ELMC_CTRL_INT 0x08 /* R interrupt active, assert high */
|
|
/*#define ELMC_CTRL_* 0x10*/ /* reserved */
|
|
#define ELMC_CTRL_LBK 0x20 /* RW loopback enable, assert high */
|
|
#define ELMC_CTRL_CA 0x40 /* RW channel attention, assert high */
|
|
#define ELMC_CTRL_RST 0x80 /* RW 82586 reset, assert low */
|
|
|
|
/* some handy compound bits */
|
|
|
|
/* normal operation should have bank 3 and RST high, ints enabled */
|
|
#define ELMC_NORMAL (ELMC_CTRL_INTE|ELMC_CTRL_RST|0x3)
|
|
|
|
#endif /* _3c523_INCLUDE_ */
|