/trunk/kernel/genarch/src/drivers/ns16550/ns16550.c |
---|
0,0 → 1,116 |
/* |
* Copyright (c) 2009 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 NS 16550 serial controller driver. |
*/ |
#include <genarch/drivers/ns16550/ns16550.h> |
#include <ddi/irq.h> |
#include <arch/asm.h> |
#include <console/chardev.h> |
#include <mm/slab.h> |
#define LSR_DATA_READY 0x01 |
/** Initialize ns16550. |
* |
* @param dev Addrress of the beginning of the device in I/O space. |
* @param devno Device number. |
* @param inr Interrupt number. |
* @param cir Clear interrupt function. |
* @param cir_arg First argument to cir. |
* @param devout Output character device. |
* |
* @return True on success, false on failure. |
*/ |
bool |
ns16550_init(ns16550_t *dev, devno_t devno, inr_t inr, cir_t cir, void *cir_arg, |
chardev_t *devout) |
{ |
ns16550_instance_t *instance; |
instance = malloc(sizeof(ns16550_instance_t), FRAME_ATOMIC); |
if (!instance) |
return false; |
instance->devno = devno; |
instance->ns16550 = dev; |
instance->devout = devout; |
irq_initialize(&instance->irq); |
instance->irq.devno = devno; |
instance->irq.inr = inr; |
instance->irq.claim = ns16550_claim; |
instance->irq.handler = ns16550_irq_handler; |
instance->irq.instance = instance; |
instance->irq.cir = cir; |
instance->irq.cir_arg = cir_arg; |
irq_register(&instance->irq); |
while ((pio_read_8(&dev->lsr) & LSR_DATA_READY)) |
(void) pio_read_8(&dev->rbr); |
/* Enable interrupts */ |
pio_write_8(&dev->ier, IER_ERBFI); |
pio_write_8(&dev->mcr, MCR_OUT2); |
return true; |
} |
irq_ownership_t ns16550_claim(irq_t *irq) |
{ |
ns16550_instance_t *instance = irq->instance; |
ns16550_t *dev = instance->ns16550; |
if (pio_read_8(&dev->lsr) & LSR_DATA_READY) |
return IRQ_ACCEPT; |
else |
return IRQ_DECLINE; |
} |
void ns16550_irq_handler(irq_t *irq) |
{ |
ns16550_instance_t *instance = irq->instance; |
ns16550_t *dev = instance->ns16550; |
if (pio_read_8(&dev->lsr) & LSR_DATA_READY) { |
uint8_t x; |
x = pio_read_8(&dev->rbr); |
if (instance->devout) |
chardev_push_character(instance->devout, x); |
} |
} |
/** @} |
*/ |
Property changes: |
Added: svn:mergeinfo |
/trunk/kernel/genarch/src/drivers/i8042/i8042.c |
---|
0,0 → 1,109 |
/* |
* Copyright (c) 2009 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 i8042 processor driver |
* |
* It takes care of the i8042 serial communication. |
*/ |
#include <genarch/drivers/i8042/i8042.h> |
#include <genarch/drivers/legacy/ia32/io.h> |
#include <arch/asm.h> |
#include <console/chardev.h> |
#include <mm/slab.h> |
#define i8042_SET_COMMAND 0x60 |
#define i8042_COMMAND 0x69 |
#define i8042_BUFFER_FULL_MASK 0x01 |
#define i8042_WAIT_MASK 0x02 |
static irq_ownership_t i8042_claim(irq_t *irq) |
{ |
i8042_instance_t *i8042_instance = irq->instance; |
i8042_t *dev = i8042_instance->i8042; |
if (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK) |
return IRQ_ACCEPT; |
else |
return IRQ_DECLINE; |
} |
static void i8042_irq_handler(irq_t *irq) |
{ |
i8042_instance_t *instance = irq->instance; |
i8042_t *dev = instance->i8042; |
uint8_t data; |
uint8_t status; |
if (((status = pio_read_8(&dev->status)) & i8042_BUFFER_FULL_MASK)) { |
data = pio_read_8(&dev->data); |
if (instance->devout) |
chardev_push_character(instance->devout, data); |
} |
} |
/** Initialize i8042. */ |
bool |
i8042_init(i8042_t *dev, devno_t devno, inr_t inr, chardev_t *devout) |
{ |
i8042_instance_t *instance; |
instance = malloc(sizeof(i8042_instance_t), FRAME_ATOMIC); |
if (!instance) |
return false; |
instance->devno = devno; |
instance->i8042 = dev; |
instance->devout = devout; |
irq_initialize(&instance->irq); |
instance->irq.devno = devno; |
instance->irq.inr = inr; |
instance->irq.claim = i8042_claim; |
instance->irq.handler = i8042_irq_handler; |
instance->irq.instance = instance; |
irq_register(&instance->irq); |
/* |
* Clear input buffer. |
*/ |
while (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK) |
(void) pio_read_8(&dev->data); |
return true; |
} |
/** @} |
*/ |
Property changes: |
Added: svn:mergeinfo |
/trunk/kernel/genarch/src/drivers/z8530/z8530.c |
---|
0,0 → 1,133 |
/* |
* Copyright (c) 2009 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 Zilog 8530 serial controller driver. |
*/ |
#include <genarch/drivers/z8530/z8530.h> |
#include <console/chardev.h> |
#include <ddi/irq.h> |
#include <arch/asm.h> |
#include <mm/slab.h> |
static inline void z8530_write(ioport8_t *ctl, uint8_t reg, uint8_t val) |
{ |
/* |
* Registers 8-15 will automatically issue the Point High |
* command as their bit 3 is 1. |
*/ |
pio_write_8(ctl, reg); /* select register */ |
pio_write_8(ctl, val); /* write value */ |
} |
static inline uint8_t z8530_read(ioport8_t *ctl, uint8_t reg) |
{ |
/* |
* Registers 8-15 will automatically issue the Point High |
* command as their bit 3 is 1. |
*/ |
pio_write_8(ctl, reg); /* select register */ |
return pio_read_8(ctl); |
} |
/** Initialize z8530. */ |
bool |
z8530_init(z8530_t *dev, devno_t devno, inr_t inr, cir_t cir, void *cir_arg, |
chardev_t *devout) |
{ |
z8530_instance_t *instance; |
instance = malloc(sizeof(z8530_instance_t), FRAME_ATOMIC); |
if (!instance) |
return false; |
instance->devno = devno; |
instance->z8530 = dev; |
instance->devout = devout; |
irq_initialize(&instance->irq); |
instance->irq.devno = devno; |
instance->irq.inr = inr; |
instance->irq.claim = z8530_claim; |
instance->irq.handler = z8530_irq_handler; |
instance->irq.instance = instance; |
instance->irq.cir = cir; |
instance->irq.cir_arg = cir_arg; |
irq_register(&instance->irq); |
(void) z8530_read(&dev->ctl_a, RR8); |
/* |
* Clear any pending TX interrupts or we never manage |
* to set FHC UART interrupt state to idle. |
*/ |
z8530_write(&dev->ctl_a, WR0, WR0_TX_IP_RST); |
/* interrupt on all characters */ |
z8530_write(&dev->ctl_a, WR1, WR1_IARCSC); |
/* 8 bits per character and enable receiver */ |
z8530_write(&dev->ctl_a, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
/* Master Interrupt Enable. */ |
z8530_write(&dev->ctl_a, WR9, WR9_MIE); |
return true; |
} |
irq_ownership_t z8530_claim(irq_t *irq) |
{ |
z8530_instance_t *instance = irq->instance; |
z8530_t *dev = instance->z8530; |
if (z8530_read(&dev->ctl_a, RR0) & RR0_RCA) |
return IRQ_ACCEPT; |
else |
return IRQ_DECLINE; |
} |
void z8530_irq_handler(irq_t *irq) |
{ |
z8530_instance_t *instance = irq->instance; |
z8530_t *dev = instance->z8530; |
uint8_t x; |
if (z8530_read(&dev->ctl_a, RR0) & RR0_RCA) { |
x = z8530_read(&dev->ctl_a, RR8); |
if (instance->devout) |
chardev_push_character(instance->devout, x); |
} |
} |
/** @} |
*/ |
Property changes: |
Added: svn:mergeinfo |