/trunk/kernel/kernel.config |
---|
141,6 → 141,8 |
# Support for NS16550 serial port |
! [ARCH=sparc64|ARCH=ia64] CONFIG_NS16550 (y/n) |
# Interrupt-driven driver for NS16550? |
! [CONFIG_NS16550=y] CONFIG_NS16550_INTERRUPT_DRIVEN (n/y) |
# Virtually indexed D-cache support |
! [ARCH=sparc64] CONFIG_VIRT_IDX_DCACHE (y/n) |
/trunk/kernel/genarch/include/kbd/ns16550.h |
---|
58,6 → 58,7 |
#define IIR_REG 2 /** Interrupt Ident Register (read). */ |
#define FCR_REG 2 /** FIFO control register (write). */ |
#define LCR_REG 3 /** Line Control register. */ |
#define MCR_REG 4 /** Modem Control Register. */ |
#define LSR_REG 5 /** Line Status Register. */ |
#define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
64,57 → 65,68 |
#define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
#define MCR_OUT2 0x08 /** OUT2. */ |
/** Structure representing the ns16550 device. */ |
typedef struct { |
devno_t devno; |
volatile ioport_t io_port; /** Memory mapped registers of the ns16550. */ |
/** Memory mapped registers of the ns16550. */ |
volatile ioport_t io_port; |
} ns16550_t; |
static inline uint8_t ns16550_rbr_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+RBR_REG); |
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); |
outb(dev->io_port + RBR_REG, v); |
} |
static inline uint8_t ns16550_ier_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+IER_REG); |
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); |
outb(dev->io_port + IER_REG, v); |
} |
static inline uint8_t ns16550_iir_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+IIR_REG); |
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); |
outb(dev->io_port + FCR_REG, v); |
} |
static inline uint8_t ns16550_lcr_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+LCR_REG); |
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); |
outb(dev->io_port + LCR_REG, v); |
} |
static inline uint8_t ns16550_lsr_read(ns16550_t *dev) |
{ |
return inb(dev->io_port+LSR_REG); |
return inb(dev->io_port + LSR_REG); |
} |
static inline uint8_t ns16550_mcr_read(ns16550_t *dev) |
{ |
return inb(dev->io_port + MCR_REG); |
} |
static inline void ns16550_mcr_write(ns16550_t *dev, uint8_t v) |
{ |
outb(dev->io_port + MCR_REG, v); |
} |
#endif |
/trunk/kernel/genarch/src/kbd/ns16550.c |
---|
134,6 → 134,12 |
sysinfo_set_item_val("kbd.inr", NULL, inr); |
sysinfo_set_item_val("kbd.address.virtual", NULL, port); |
#ifdef CONFIG_NS16550_INTERRUPT_DRIVEN |
/* Enable interrupts */ |
ns16550_ier_write(&ns16550, IER_ERBFI); |
ns16550_mcr_write(&ns16550, MCR_OUT2); |
#endif |
#ifdef ia64 |
uint8_t c; |
c = ns16550_lcr_read(&ns16550); |
149,10 → 155,7 |
/** Process ns16550 interrupt. */ |
void ns16550_interrupt(void) |
{ |
/* TODO |
* |
* ns16550 works in the polled mode so far. |
*/ |
ns16550_poll(); |
} |
/* Called from getc(). */ |
201,6 → 204,7 |
*/ |
void ns16550_poll(void) |
{ |
#ifndef CONFIG_NS16550_INTERRUPT_DRIVEN |
ipl_t ipl; |
ipl = interrupts_disable(); |
220,6 → 224,7 |
spinlock_unlock(&ns16550_irq.lock); |
interrupts_restore(ipl); |
#endif |
while (ns16550_lsr_read(&ns16550) & LSR_DATA_READY) { |
uint8_t x; |
251,7 → 256,10 |
void ns16550_irq_handler(irq_t *irq, void *arg, ...) |
{ |
panic("Not yet implemented, ns16550 works in polled mode.\n"); |
if (irq->notif_cfg.notify && irq->notif_cfg.answerbox) |
ipc_irq_send_notif(irq); |
else |
ns16550_interrupt(); |
} |
/** @} |
/trunk/kernel/Makefile |
---|
126,6 → 126,10 |
DEFS += -DCONFIG_NS16550 |
endif |
ifeq ($(CONFIG_NS16550_INTERRUPT_DRIVEN),y) |
DEFS += -DCONFIG_NS16550_INTERRUPT_DRIVEN |
endif |
ifeq ($(CONFIG_VIRT_IDX_DCACHE),y) |
DEFS += -DCONFIG_VIRT_IDX_DCACHE |
endif |
/trunk/kernel/arch/sparc64/src/console.c |
---|
112,11 → 112,23 |
} |
#endif |
#ifdef CONFIG_NS16550 |
#ifdef CONFIG_NS16550_INTERRUPT_DRIVEN |
if (kbd_type == KBD_NS16550) { |
/* |
* The ns16550 driver is interrupt-driven. |
*/ |
return; |
} |
#endif |
#endif |
while (1) { |
#ifdef CONFIG_NS16550 |
#ifndef CONFIG_NS16550_INTERRUPT_DRIVEN |
if (kbd_type == KBD_NS16550) |
ns16550_poll(); |
#endif |
#endif |
thread_usleep(KEYBOARD_POLL_PAUSE); |
} |
} |
/trunk/kernel/arch/sparc64/src/drivers/kbd.c |
---|
103,11 → 103,13 |
switch (kbd_type) { |
case KBD_Z8530: |
size = ((ofw_fhc_reg_t *) prop->value)->size; |
if (!ofw_fhc_apply_ranges(node->parent, ((ofw_fhc_reg_t *) prop->value) , &pa)) { |
if (!ofw_fhc_apply_ranges(node->parent, |
((ofw_fhc_reg_t *) prop->value), &pa)) { |
printf("Failed to determine keyboard address.\n"); |
return; |
} |
if (!ofw_fhc_map_interrupt(node->parent, ((ofw_fhc_reg_t *) prop->value), interrupts, &inr)) { |
if (!ofw_fhc_map_interrupt(node->parent, |
((ofw_fhc_reg_t *) prop->value), interrupts, &inr)) { |
printf("Failed to determine keyboard interrupt.\n"); |
return; |
} |
115,11 → 117,13 |
case KBD_NS16550: |
size = ((ofw_ebus_reg_t *) prop->value)->size; |
if (!ofw_ebus_apply_ranges(node->parent, ((ofw_ebus_reg_t *) prop->value) , &pa)) { |
if (!ofw_ebus_apply_ranges(node->parent, |
((ofw_ebus_reg_t *) prop->value), &pa)) { |
printf("Failed to determine keyboard address.\n"); |
return; |
} |
if (!ofw_ebus_map_interrupt(node->parent, ((ofw_ebus_reg_t *) prop->value), interrupts, &inr)) { |
if (!ofw_ebus_map_interrupt(node->parent, |
((ofw_ebus_reg_t *) prop->value), interrupts, &inr)) { |
printf("Failed to determine keyboard interrupt.\n"); |
return; |
}; |
151,7 → 155,8 |
break; |
#endif |
default: |
printf("Kernel is not compiled with the necessary keyboard driver this machine requires.\n"); |
printf("Kernel is not compiled with the necessary keyboard " |
"driver this machine requires.\n"); |
} |
} |