mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
f4330002d1
We're about to change the semantics of pi_register()'s return value, so rename it to something else first, so that any unconverted code reliaby breaks. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
170 lines
4.9 KiB
C
170 lines
4.9 KiB
C
#ifndef __DRIVERS_PARIDE_H__
|
|
#define __DRIVERS_PARIDE_H__
|
|
|
|
/*
|
|
paride.h (c) 1997-8 Grant R. Guenther <grant@torque.net>
|
|
Under the terms of the GPL.
|
|
|
|
This file defines the interface between the high-level parallel
|
|
IDE device drivers (pd, pf, pcd, pt) and the adapter chips.
|
|
|
|
*/
|
|
|
|
/* Changes:
|
|
|
|
1.01 GRG 1998.05.05 init_proto, release_proto
|
|
*/
|
|
|
|
#define PARIDE_H_VERSION "1.01"
|
|
|
|
/* Some adapters need to know what kind of device they are in
|
|
|
|
Values for devtype:
|
|
*/
|
|
|
|
#define PI_PD 0 /* IDE disk */
|
|
#define PI_PCD 1 /* ATAPI CDrom */
|
|
#define PI_PF 2 /* ATAPI disk */
|
|
#define PI_PT 3 /* ATAPI tape */
|
|
#define PI_PG 4 /* ATAPI generic */
|
|
|
|
/* The paride module contains no state, instead the drivers allocate
|
|
a pi_adapter data structure and pass it to paride in every operation.
|
|
|
|
*/
|
|
|
|
struct pi_adapter {
|
|
|
|
struct pi_protocol *proto; /* adapter protocol */
|
|
int port; /* base address of parallel port */
|
|
int mode; /* transfer mode in use */
|
|
int delay; /* adapter delay setting */
|
|
int devtype; /* device type: PI_PD etc. */
|
|
char *device; /* name of driver */
|
|
int unit; /* unit number for chained adapters */
|
|
int saved_r0; /* saved port state */
|
|
int saved_r2; /* saved port state */
|
|
int reserved; /* number of ports reserved */
|
|
unsigned long private; /* for protocol module */
|
|
|
|
wait_queue_head_t parq; /* semaphore for parport sharing */
|
|
void *pardev; /* pointer to pardevice */
|
|
char *parname; /* parport name */
|
|
int claimed; /* parport has already been claimed */
|
|
void (*claim_cont)(void); /* continuation for parport wait */
|
|
};
|
|
|
|
typedef struct pi_adapter PIA;
|
|
|
|
/* functions exported by paride to the high level drivers */
|
|
|
|
extern int pi_init(PIA *pi,
|
|
int autoprobe, /* 1 to autoprobe */
|
|
int port, /* base port address */
|
|
int mode, /* -1 for autoprobe */
|
|
int unit, /* unit number, if supported */
|
|
int protocol, /* protocol to use */
|
|
int delay, /* -1 to use adapter specific default */
|
|
char * scratch, /* address of 512 byte buffer */
|
|
int devtype, /* device type: PI_PD, PI_PCD, etc ... */
|
|
int verbose, /* log verbose data while probing */
|
|
char *device /* name of the driver */
|
|
); /* returns 0 on failure, 1 on success */
|
|
|
|
extern void pi_release(PIA *pi);
|
|
|
|
/* registers are addressed as (cont,regr)
|
|
|
|
cont: 0 for command register file, 1 for control register(s)
|
|
regr: 0-7 for register number.
|
|
|
|
*/
|
|
|
|
extern void pi_write_regr(PIA *pi, int cont, int regr, int val);
|
|
|
|
extern int pi_read_regr(PIA *pi, int cont, int regr);
|
|
|
|
extern void pi_write_block(PIA *pi, char * buf, int count);
|
|
|
|
extern void pi_read_block(PIA *pi, char * buf, int count);
|
|
|
|
extern void pi_connect(PIA *pi);
|
|
|
|
extern void pi_disconnect(PIA *pi);
|
|
|
|
extern void pi_do_claimed(PIA *pi, void (*cont)(void));
|
|
extern int pi_schedule_claimed(PIA *pi, void (*cont)(void));
|
|
|
|
/* macros and functions exported to the protocol modules */
|
|
|
|
#define delay_p (pi->delay?udelay(pi->delay):(void)0)
|
|
#define out_p(offs,byte) outb(byte,pi->port+offs); delay_p;
|
|
#define in_p(offs) (delay_p,inb(pi->port+offs))
|
|
|
|
#define w0(byte) {out_p(0,byte);}
|
|
#define r0() (in_p(0) & 0xff)
|
|
#define w1(byte) {out_p(1,byte);}
|
|
#define r1() (in_p(1) & 0xff)
|
|
#define w2(byte) {out_p(2,byte);}
|
|
#define r2() (in_p(2) & 0xff)
|
|
#define w3(byte) {out_p(3,byte);}
|
|
#define w4(byte) {out_p(4,byte);}
|
|
#define r4() (in_p(4) & 0xff)
|
|
#define w4w(data) {outw(data,pi->port+4); delay_p;}
|
|
#define w4l(data) {outl(data,pi->port+4); delay_p;}
|
|
#define r4w() (delay_p,inw(pi->port+4)&0xffff)
|
|
#define r4l() (delay_p,inl(pi->port+4)&0xffffffff)
|
|
|
|
static inline u16 pi_swab16( char *b, int k)
|
|
|
|
{ union { u16 u; char t[2]; } r;
|
|
|
|
r.t[0]=b[2*k+1]; r.t[1]=b[2*k];
|
|
return r.u;
|
|
}
|
|
|
|
static inline u32 pi_swab32( char *b, int k)
|
|
|
|
{ union { u32 u; char f[4]; } r;
|
|
|
|
r.f[0]=b[4*k+1]; r.f[1]=b[4*k];
|
|
r.f[2]=b[4*k+3]; r.f[3]=b[4*k+2];
|
|
return r.u;
|
|
}
|
|
|
|
struct pi_protocol {
|
|
|
|
char name[8]; /* name for this protocol */
|
|
int index; /* index into protocol table */
|
|
|
|
int max_mode; /* max mode number */
|
|
int epp_first; /* modes >= this use 8 ports */
|
|
|
|
int default_delay; /* delay parameter if not specified */
|
|
int max_units; /* max chained units probed for */
|
|
|
|
void (*write_regr)(PIA *,int,int,int);
|
|
int (*read_regr)(PIA *,int,int);
|
|
void (*write_block)(PIA *,char *,int);
|
|
void (*read_block)(PIA *,char *,int);
|
|
|
|
void (*connect)(PIA *);
|
|
void (*disconnect)(PIA *);
|
|
|
|
int (*test_port)(PIA *);
|
|
int (*probe_unit)(PIA *);
|
|
int (*test_proto)(PIA *,char *,int);
|
|
void (*log_adapter)(PIA *,char *,int);
|
|
|
|
int (*init_proto)(PIA *);
|
|
void (*release_proto)(PIA *);
|
|
struct module *owner;
|
|
};
|
|
|
|
typedef struct pi_protocol PIP;
|
|
|
|
extern int paride_register( PIP * );
|
|
extern void paride_unregister ( PIP * );
|
|
|
|
#endif /* __DRIVERS_PARIDE_H__ */
|
|
/* end of paride.h */
|