0,0 → 1,122 |
/* |
* Copyright (c) 2001-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup genarch |
* @{ |
*/ |
/** |
* @file |
* @brief Headers for NS 16550 serial port / keyboard driver. |
*/ |
|
#ifndef KERN_NS16550_H_ |
#define KERN_NS16550_H_ |
|
#include <console/chardev.h> |
#include <ipc/irq.h> |
|
extern void ns16550_init(devno_t devno, inr_t inr, uintptr_t vaddr); |
extern void ns16550_poll(void); |
extern void ns16550_grab(void); |
extern void ns16550_release(void); |
extern char ns16550_key_read(chardev_t *d); |
extern irq_ownership_t ns16550_claim(void); |
extern void ns16550_irq_handler(irq_t *irq, void *arg, ...); |
|
#include <arch/types.h> |
#ifndef ia64 |
#include <arch/drivers/kbd.h> |
#endif |
/* NS16550 registers */ |
#define RBR_REG 0 /** Receiver Buffer Register. */ |
#define IER_REG 1 /** Interrupt Enable Register. */ |
#define IIR_REG 2 /** Interrupt Ident Register (read). */ |
#define FCR_REG 2 /** FIFO control register (write). */ |
#define LCR_REG 3 /** Line Control register. */ |
#define LSR_REG 5 /** Line Status Register. */ |
|
#define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
|
#define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
|
/** Structure representing the ns16550 device. */ |
typedef struct { |
devno_t devno; |
volatile ioport_t io_port; /** Memory mapped registers of the ns16550. */ |
} ns16550_t; |
|
static inline uint8_t ns16550_rbr_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+RBR_REG); |
} |
static inline void ns16550_rbr_write(ns16550_t *dev, uint8_t v) |
{ |
outb(dev->io_port+RBR_REG,v); |
} |
|
static inline uint8_t ns16550_ier_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+IER_REG); |
} |
|
static inline void ns16550_ier_write(ns16550_t *dev, uint8_t v) |
{ |
outb(dev->io_port+IER_REG,v); |
} |
|
static inline uint8_t ns16550_iir_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+IIR_REG); |
} |
|
static inline void ns16550_fcr_write(ns16550_t *dev, uint8_t v) |
{ |
outb(dev->io_port+FCR_REG,v); |
} |
|
static inline uint8_t ns16550_lcr_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+LCR_REG); |
} |
|
static inline void ns16550_lcr_write(ns16550_t *dev, uint8_t v) |
{ |
outb(dev->io_port+LCR_REG,v); |
} |
|
static inline uint8_t ns16550_lsr_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+LSR_REG); |
} |
|
|
|
#endif |
|
/** @} |
*/ |