mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 14:43:58 +08:00
607ca46e97
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
86 lines
2.8 KiB
C
86 lines
2.8 KiB
C
/* $Id: scc.h,v 1.29 1997/04/02 14:56:45 jreuter Exp jreuter $ */
|
|
#ifndef _SCC_H
|
|
#define _SCC_H
|
|
|
|
#include <uapi/linux/scc.h>
|
|
|
|
|
|
enum {TX_OFF, TX_ON}; /* command for scc_key_trx() */
|
|
|
|
/* Vector masks in RR2B */
|
|
|
|
#define VECTOR_MASK 0x06
|
|
#define TXINT 0x00
|
|
#define EXINT 0x02
|
|
#define RXINT 0x04
|
|
#define SPINT 0x06
|
|
|
|
#ifdef CONFIG_SCC_DELAY
|
|
#define Inb(port) inb_p(port)
|
|
#define Outb(port, val) outb_p(val, port)
|
|
#else
|
|
#define Inb(port) inb(port)
|
|
#define Outb(port, val) outb(val, port)
|
|
#endif
|
|
|
|
/* SCC channel control structure for KISS */
|
|
|
|
struct scc_kiss {
|
|
unsigned char txdelay; /* Transmit Delay 10 ms/cnt */
|
|
unsigned char persist; /* Persistence (0-255) as a % */
|
|
unsigned char slottime; /* Delay to wait on persistence hit */
|
|
unsigned char tailtime; /* Delay after last byte written */
|
|
unsigned char fulldup; /* Full Duplex mode 0=CSMA 1=DUP 2=ALWAYS KEYED */
|
|
unsigned char waittime; /* Waittime before any transmit attempt */
|
|
unsigned int maxkeyup; /* Maximum time to transmit (seconds) */
|
|
unsigned int mintime; /* Minimal offtime after MAXKEYUP timeout (seconds) */
|
|
unsigned int idletime; /* Maximum idle time in ALWAYS KEYED mode (seconds) */
|
|
unsigned int maxdefer; /* Timer for CSMA channel busy limit */
|
|
unsigned char tx_inhibit; /* Transmit is not allowed when set */
|
|
unsigned char group; /* Group ID for AX.25 TX interlocking */
|
|
unsigned char mode; /* 'normal' or 'hwctrl' mode (unused) */
|
|
unsigned char softdcd; /* Use DPLL instead of DCD pin for carrier detect */
|
|
};
|
|
|
|
|
|
/* SCC channel structure */
|
|
|
|
struct scc_channel {
|
|
int init; /* channel exists? */
|
|
|
|
struct net_device *dev; /* link to device control structure */
|
|
struct net_device_stats dev_stat;/* device statistics */
|
|
|
|
char brand; /* manufacturer of the board */
|
|
long clock; /* used clock */
|
|
|
|
io_port ctrl; /* I/O address of CONTROL register */
|
|
io_port data; /* I/O address of DATA register */
|
|
io_port special; /* I/O address of special function port */
|
|
int irq; /* Number of Interrupt */
|
|
|
|
char option;
|
|
char enhanced; /* Enhanced SCC support */
|
|
|
|
unsigned char wreg[16]; /* Copy of last written value in WRx */
|
|
unsigned char status; /* Copy of R0 at last external interrupt */
|
|
unsigned char dcd; /* DCD status */
|
|
|
|
struct scc_kiss kiss; /* control structure for KISS params */
|
|
struct scc_stat stat; /* statistical information */
|
|
struct scc_modem modem; /* modem information */
|
|
|
|
struct sk_buff_head tx_queue; /* next tx buffer */
|
|
struct sk_buff *rx_buff; /* pointer to frame currently received */
|
|
struct sk_buff *tx_buff; /* pointer to frame currently transmitted */
|
|
|
|
/* Timer */
|
|
struct timer_list tx_t; /* tx timer for this channel */
|
|
struct timer_list tx_wdog; /* tx watchdogs */
|
|
|
|
/* Channel lock */
|
|
spinlock_t lock; /* Channel guard lock */
|
|
};
|
|
|
|
#endif /* defined(_SCC_H) */
|