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Ported functions port_deny_full and port_deny to BSDs. Also converted the C++ comments to C comments.

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This commit is contained in:
gfk
2002-02-27 21:34:46 +00:00
parent 51ac212f97
commit 02464aa80f
1 changed files with 89 additions and 37 deletions
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server/drivers/port.h
+89 -37
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@@ -7,27 +7,35 @@
*
* FreeBSD support by Guillaume Filion and Philip Pokorny, copyright 05/2001
*
* NetBSD port by Guillaume Filion, copyright 12/2001
* NetBSD port by Guillaume Filion, copyright 12/2001 and 02/2002
*/
/*
This file defines 4 static inline functions for port I/O:
This file defines 6 static inline functions for port I/O:
// Read a byte from port
static inline int port_in (unsigned short int port);
// Returns the content of the byte.
Read a byte from port
static inline int port_in (unsigned short int port);
Returns the content of the byte.
// Write a char(byte) 'val' to port.
static inline void port_out (unsigned short int port, unsigned char val);
// Returns nothing.
Write a char(byte) 'val' to port.
static inline void port_out (unsigned short int port, unsigned char val);
Returns nothing.
// Get access to a specific port
static inline int port_access (unsigned short int port);
// Returns 0 if successful, -1 if failed
Get access to a specific port
static inline int port_access (unsigned short int port);
Returns 0 if successful, -1 if failed
// Get access 3 to ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA)
static inline int port_access_full (unsigned short int port);
// Returns 0 if successful, -1 if failed
Close access to a specific port
static inline int port_deny (unsigned short int port);
Returns 0 if successful, -1 if failed
Get access 3 to ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA)
static inline int port_access_full (unsigned short int port);
Returns 0 if successful, -1 if failed
Close access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA)
static inline int port_deny_full (unsigned short int port);
Returns 0 if successful, -1 if failed
*/
#ifndef PORT_H
@@ -39,48 +47,54 @@ static inline int port_access_full (unsigned short int port);
#include <stdio.h>
// -------------------------------------------------------------
// Use ioperm, inb and outb in <sys/io.h> (Linux)
/* ------------------------------------------------------------- */
/* Use ioperm, inb and outb in <sys/io.h> (Linux) */
#if defined HAVE_IOPERM && HAVE_SYS_IO_H
#include <sys/io.h>
// Read a byte from port
/* Read a byte from port */
static inline int port_in (unsigned short int port) {
return inb(port);
}
// Write a byte 'val' to port
/* Write a byte 'val' to port */
static inline void port_out (unsigned short int port, unsigned char val) {
outb(val, port);
}
// Get access to a specific port
/* Get access to a specific port */
static inline int port_access (unsigned short int port) {
return ioperm(port, 1, 255);
}
// Get access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA)
/* Close access to a specific port */
static inline int port_deny (unsigned short int port) {
return ioperm(port, 1, 0);
}
/* Get access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA) */
static inline int port_access_full (unsigned short int port) {
return ioperm(port, 3, 255);
}
/* Close access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA) */
static inline int port_deny_full (unsigned short int port) {
return ioperm(port, 3, 0);
}
// -------------------------------------------------------------
// Use i386_get_ioperm, i386_set_ioperm, inb and outb from <machine/pio.h> (NetBSD)
/* ------------------------------------------------------------- */
/* Use i386_get_ioperm, i386_set_ioperm, inb and outb from <machine/pio.h> (NetBSD) */
#elif defined HAVE_LIBI386 && defined HAVE_MACHINE_PIO_H && defined HAVE_MACHINE_SYSARCH_H
#include <sys/types.h>
#include <machine/pio.h>
#include <machine/sysarch.h>
// Read a byte from port
/* Read a byte from port */
static inline int port_in (unsigned short int port) {
return inb(port);
}
// Write a byte 'val' to port
/* Write a byte 'val' to port */
static inline void port_out (unsigned short int port, unsigned char val) {
outb(port, val);
}
@@ -100,7 +114,7 @@ static inline void setaccess(u_long * map, u_int bit, int allow) {
map[word] |= mask;
}
// Get access to a specific port
/* Get access to a specific port */
static inline int port_access (unsigned short int port) {
u_long iomap[32];
@@ -113,7 +127,20 @@ static inline int port_access (unsigned short int port) {
return 0;
}
// Get access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA)
/* Close access to a specific port */
static inline int port_deny (unsigned short int port) {
u_long iomap[32];
if (i386_get_ioperm(iomap) == -1) return -1;
setaccess(iomap, port, 0);
if (i386_set_ioperm(iomap) == -1) return -1;
return 0;
}
/* Get access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA) */
static inline int port_access_full (unsigned short int port) {
u_long iomap[32];
@@ -128,13 +155,28 @@ static inline int port_access_full (unsigned short int port) {
return 0;
}
//#endif // defined HAVE_LIBI386 && defined HAVE_SYS_TYPES_H && defined HAVE_MACHINE_PIO_H
/* Close access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA) */
static inline int port_deny_full (unsigned short int port) {
u_long iomap[32];
// -------------------------------------------------------------
// Last chance! Use /dev/io and i386 ASM code (BSD4.3 ?)
if (i386_get_ioperm(iomap) == -1) return -1;
setaccess(iomap, port , 0);
setaccess(iomap, port+1, 0);
setaccess(iomap, port+2, 0);
if (i386_set_ioperm(iomap) == -1) return -1;
return 0;
}
/* #endif // defined HAVE_LIBI386 && defined HAVE_SYS_TYPES_H && defined HAVE_MACHINE_PIO_H */
/* ------------------------------------------------------------- */
/* Last chance! Use /dev/io and i386 ASM code (BSD4.3 ?) */
#else
// Read a byte from port
/* Read a byte from port */
static inline int port_in (unsigned short int port) {
unsigned char value;
__asm__ volatile ("inb %1,%0":"=a" (value)
@@ -142,29 +184,39 @@ static inline int port_in (unsigned short int port) {
return value;
}
// Write a byte 'val' to port
/* Write a byte 'val' to port */
static inline void port_out (unsigned short int port, unsigned char val) {
__asm__ volatile ("outb %0,%1\n"::"a" (val), "d" (port)
);
}
// Get access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA)
/* Get access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA) */
static inline int port_access_full (unsigned short int port) {
static FILE * port_access_handle = NULL ;
if( port_access_handle
|| (port_access_handle = fopen("/dev/io", "rw")) != NULL ) {
return( 0 ); // Success
return( 0 ); /* Success */
} else {
return( -1 ); // Failure
return( -1 ); /* Failure */
};
return -1;
}
// Get access to a specific port
/* Get access to a specific port */
static inline int port_access (unsigned short int port) {
return port_access_full(port); // /dev/io gives you access to all ports.
return port_access_full(port); /* /dev/io gives you access to all ports. */
}
/* Close access to 3 ports: port (CONTROL), port+1 (STATUS) and port+2 (DATA) */
static inline int port_deny_full (unsigned short int port) {
/* Can't close /dev/io... */
}
/* Close access to a specific port */
static inline int port_deny (unsigned short int port) {
/* Can't close /dev/io... */
}
#endif
@@ -189,4 +241,4 @@ port_out (unsigned int port, unsigned char val)
#endif
*/
#endif // PORT_H
#endif /* PORT_H */