pc300.h

优龙2410linux2.6.8内核源代码

/*
 * pc300.h	Cyclades-PC300(tm) Kernel API Definitions.
 *
 * Author:	Ivan Passos <[e-mail]>
 *
 * Copyright:	(c) 1999-2002 Cyclades Corp.
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	as published by the Free Software Foundation; either version
 *	2 of the License, or (at your option) any later version.
 *
 * $Log: pc300.h,v $
 * Revision 3.12  2002/03/07 14:17:09  henrique
 * License data fixed
 *
 * Revision 3.11  2002/01/28 21:09:39  daniela
 * Included ';' after pc300hw.bus.
 *
 * Revision 3.10  2002/01/17 17:58:52  ivan
 * Support for PC300-TE/M (PMC).
 *
 * Revision 3.9  2001/09/28 13:30:53  daniela
 * Renamed dma_start routine to rx_dma_start.
 *
 * Revision 3.8  2001/09/24 13:03:45  daniela
 * Fixed BOF interrupt treatment. Created dma_start routine.
 *
 * Revision 3.7  2001/08/10 17:19:58  daniela
 * Fixed IOCTLs defines.
 *
 * Revision 3.6  2001/07/18 19:24:42  daniela
 * Included kernel version.
 *
 * Revision 3.5  2001/07/05 18:38:08  daniela
 * DMA transmission bug fix.
 *
 * Revision 3.4  2001/06/26 17:10:40  daniela
 * New configuration parameters (line code, CRC calculation and clock).
 *
 * Revision 3.3  2001/06/22 13:13:02  regina
 * MLPPP implementation
 *
 * Revision 3.2  2001/06/18 17:56:09  daniela
 * Increased DEF_MTU and TX_QUEUE_LEN.
 *
 * Revision 3.1  2001/06/15 12:41:10  regina
 * upping major version number
 *
 * Revision 1.1.1.1  2001/06/13 20:25:06  daniela
 * PC300 initial CVS version (3.4.0-pre1)
 *
 * Revision 2.3 2001/03/05 daniela
 * Created struct pc300conf, to provide the hardware information to pc300util.
 * Inclusion of 'alloc_ramsize' field on structure 'pc300hw'.
 * 
 * Revision 2.2 2000/12/22 daniela
 * Structures and defines to support pc300util: statistics, status, 
 * loopback tests, trace.
 * 
 * Revision 2.1 2000/09/28 ivan
 * Inclusion of 'iophys' and 'iosize' fields on structure 'pc300hw', to 
 * allow release of I/O region at module unload.
 * Changed location of include files.
 *
 * Revision 2.0 2000/03/27 ivan
 * Added support for the PC300/TE cards.
 *
 * Revision 1.1 2000/01/31 ivan
 * Replaced 'pc300[drv|sca].h' former PC300 driver include files.
 *
 * Revision 1.0 1999/12/16 ivan
 * First official release.
 * Inclusion of 'nchan' field on structure 'pc300hw', to allow variable 
 * number of ports per card.
 * Inclusion of 'if_ptr' field on structure 'pc300dev'.
 *
 * Revision 0.6 1999/11/17 ivan
 * Changed X.25-specific function names to comply with adopted convention.
 *
 * Revision 0.5 1999/11/16 Daniela Squassoni
 * X.25 support.
 *
 * Revision 0.4 1999/11/15 ivan
 * Inclusion of 'clock' field on structure 'pc300hw'.
 *
 * Revision 0.3 1999/11/10 ivan
 * IOCTL name changing.
 * Inclusion of driver function prototypes.
 *
 * Revision 0.2 1999/11/03 ivan
 * Inclusion of 'tx_skb' and union 'ifu' on structure 'pc300dev'.
 *
 * Revision 0.1 1999/01/15 ivan
 * Initial version.
 *
 */

#ifndef	_PC300_H
#define	_PC300_H

#include <linux/hdlc.h>
#include "hd64572.h"
#include "pc300-falc-lh.h"

#ifndef CY_TYPES
#define CY_TYPES
#if defined(__alpha__)
typedef	unsigned long	ucdouble;	/* 64 bits, unsigned */
typedef	unsigned int	uclong;		/* 32 bits, unsigned */
#else
typedef	unsigned long	uclong;		/* 32 bits, unsigned */
#endif
typedef	unsigned short	ucshort;	/* 16 bits, unsigned */
typedef	unsigned char	ucchar;		/* 8 bits, unsigned */
#endif /* CY_TYPES */

#define PC300_PROTO_MLPPP 1		

#define PC300_KERNEL	"2.4.x"	/* Kernel supported by this driver */

#define	PC300_DEVNAME	"hdlc"	/* Dev. name base (for hdlc0, hdlc1, etc.) */
#define PC300_MAXINDEX	100	/* Max dev. name index (the '0' in hdlc0) */

#define	PC300_MAXCARDS	4	/* Max number of cards per system */
#define	PC300_MAXCHAN	2	/* Number of channels per card */

#define	PC300_PLX_WIN	0x80    /* PLX control window size (128b) */
#define	PC300_RAMSIZE	0x40000 /* RAM window size (256Kb) */
#define	PC300_SCASIZE	0x400   /* SCA window size (1Kb) */
#define	PC300_FALCSIZE	0x400	/* FALC window size (1Kb) */

#define PC300_OSC_CLOCK	24576000
#define PC300_PCI_CLOCK	33000000

#define BD_DEF_LEN	0x0800	/* DMA buffer length (2KB) */
#define DMA_TX_MEMSZ	0x8000	/* Total DMA Tx memory size (32KB/ch) */
#define DMA_RX_MEMSZ	0x10000	/* Total DMA Rx memory size (64KB/ch) */

#define N_DMA_TX_BUF	(DMA_TX_MEMSZ / BD_DEF_LEN)	/* DMA Tx buffers */
#define N_DMA_RX_BUF	(DMA_RX_MEMSZ / BD_DEF_LEN)	/* DMA Rx buffers */

/* DMA Buffer Offsets */
#define DMA_TX_BASE	((N_DMA_TX_BUF + N_DMA_RX_BUF) *	\
			 PC300_MAXCHAN * sizeof(pcsca_bd_t))
#define DMA_RX_BASE	(DMA_TX_BASE + PC300_MAXCHAN*DMA_TX_MEMSZ)

/* DMA Descriptor Offsets */
#define DMA_TX_BD_BASE	0x0000
#define DMA_RX_BD_BASE	(DMA_TX_BD_BASE + ((PC300_MAXCHAN*DMA_TX_MEMSZ / \
				BD_DEF_LEN) * sizeof(pcsca_bd_t)))

/* DMA Descriptor Macros */
#define TX_BD_ADDR(chan, n)	(DMA_TX_BD_BASE + \
				 ((N_DMA_TX_BUF*chan) + n) * sizeof(pcsca_bd_t))
#define RX_BD_ADDR(chan, n)	(DMA_RX_BD_BASE + \
				 ((N_DMA_RX_BUF*chan) + n) * sizeof(pcsca_bd_t))

/* Macro to access the FALC registers (TE only) */
#define F_REG(reg, chan)	(0x200*(chan) + ((reg)<<2))

/***************************************
 * Memory access functions/macros      *
 * (required to support Alpha systems) *
 ***************************************/
#ifdef __KERNEL__
#define cpc_writeb(port,val)	{writeb((ucchar)(val),(ulong)(port)); mb();}
#define cpc_writew(port,val)	{writew((ushort)(val),(ulong)(port)); mb();}
#define cpc_writel(port,val)	{writel((uclong)(val),(ulong)(port)); mb();}

#define cpc_readb(port)		readb(port)
#define cpc_readw(port)		readw(port)
#define cpc_readl(port)		readl(port)

#else /* __KERNEL__ */
#define cpc_writeb(port,val)	(*(volatile ucchar *)(port) = (ucchar)(val))
#define cpc_writew(port,val)	(*(volatile ucshort *)(port) = (ucshort)(val))
#define cpc_writel(port,val)	(*(volatile uclong *)(port) = (uclong)(val))

#define cpc_readb(port)		(*(volatile ucchar *)(port))
#define cpc_readw(port)		(*(volatile ucshort *)(port))
#define cpc_readl(port)		(*(volatile uclong *)(port))

#endif /* __KERNEL__ */

/****** Data Structures *****************************************************/

/*
 *      RUNTIME_9050 - PLX PCI9050-1 local configuration and shared runtime
 *      registers. This structure can be used to access the 9050 registers
 *      (memory mapped).
 */
struct RUNTIME_9050 {
	uclong	loc_addr_range[4];	/* 00-0Ch : Local Address Ranges */
	uclong	loc_rom_range;		/* 10h : Local ROM Range */
	uclong	loc_addr_base[4];	/* 14-20h : Local Address Base Addrs */
	uclong	loc_rom_base;		/* 24h : Local ROM Base */
	uclong	loc_bus_descr[4];	/* 28-34h : Local Bus Descriptors */
	uclong	rom_bus_descr;		/* 38h : ROM Bus Descriptor */
	uclong	cs_base[4];		/* 3C-48h : Chip Select Base Addrs */
	uclong	intr_ctrl_stat;		/* 4Ch : Interrupt Control/Status */
	uclong	init_ctrl;		/* 50h : EEPROM ctrl, Init Ctrl, etc */
};

#define PLX_9050_LINT1_ENABLE	0x01
#define PLX_9050_LINT1_POL	0x02
#define PLX_9050_LINT1_STATUS	0x04
#define PLX_9050_LINT2_ENABLE	0x08
#define PLX_9050_LINT2_POL	0x10
#define PLX_9050_LINT2_STATUS	0x20
#define PLX_9050_INTR_ENABLE	0x40
#define PLX_9050_SW_INTR	0x80

/* Masks to access the init_ctrl PLX register */
#define	PC300_CLKSEL_MASK		(0x00000004UL)
#define	PC300_CHMEDIA_MASK(chan)	(0x00000020UL<<(chan*3))
#define	PC300_CTYPE_MASK		(0x00000800UL)

/* CPLD Registers (base addr = falcbase, TE only) */
/* CPLD v. 0 */
#define CPLD_REG1	0x140	/* Chip resets, DCD/CTS status */
#define CPLD_REG2	0x144	/* Clock enable , LED control */
/* CPLD v. 2 or higher */
#define CPLD_V2_REG1	0x100	/* Chip resets, DCD/CTS status */
#define CPLD_V2_REG2	0x104	/* Clock enable , LED control */
#define CPLD_ID_REG	0x108	/* CPLD version */

/* CPLD Register bit description: for the FALC bits, they should always be 
   set based on the channel (use (bit<<(2*ch)) to access the correct bit for 
   that channel) */
#define CPLD_REG1_FALC_RESET	0x01
#define CPLD_REG1_SCA_RESET	0x02
#define CPLD_REG1_GLOBAL_CLK	0x08
#define CPLD_REG1_FALC_DCD	0x10
#define CPLD_REG1_FALC_CTS	0x20

#define CPLD_REG2_FALC_TX_CLK	0x01
#define CPLD_REG2_FALC_RX_CLK	0x02
#define CPLD_REG2_FALC_LED1	0x10
#define CPLD_REG2_FALC_LED2	0x20

/* Structure with FALC-related fields (TE only) */
#define PC300_FALC_MAXLOOP	0x0000ffff	/* for falc_issue_cmd() */

typedef struct falc {
	ucchar sync;		/* If true FALC is synchronized */
	ucchar active;		/* if TRUE then already active */
	ucchar loop_active;	/* if TRUE a line loopback UP was received */
	ucchar loop_gen;	/* if TRUE a line loopback UP was issued */

	ucchar num_channels;