serial.c File Reference

#include "serial.h"
#include <spinlock.h>
#include <type.h>
#include <init/init.h>
#include <libk/io.h>
#include <str.h>
#include <hal/cpu/irq_lock.h>

Go to the source code of this file.

Data Structures
struct	serial_entry_t
struct	serial_ring_buffer_t

Macros
#define	INT_ENABLE_OFFSET   1
#define	SERIAL_BUFFER2_SIZE   (4096 * 3)
#define	SERIAL_BUFFER2_MASK   (SERIAL_BUFFER2_SIZE - 1)
#define	SLOT_WRITING   0xFE
#define	SLOT_DROPPED   0xFF
#define	SLOT_EMPTY   0x00
#define	SPIN_LIMIT   10000u

Functions
void	serial_setup (void)
int	serial_is_transmit_empty (void)
void	serial_putc (char c)
void	serial_send_string (char *str)
void	serial_send_number (int64_t num, int base)
void	serial_clear (void)
static bool	reserve_slot (uint32_t *out_idx)
static void	put_into_buffer (const char *str, uint8_t len)
static void	serial2_send_number (int64_t num, int base)
static void	serial2_send_unsigned_number (uint64_t num, int base, int limit)
void	parse_multicore (__builtin_va_list args, const char *fmt)
void	serial2_flush (void)
static void	serial_send_padded (uint64_t val, int base, int width, char pad)
static void	parse_before_multicore (__builtin_va_list args, const char *fmt)
	__attribute__ ((used, visibility("default"), section(".export")))
	This function handles memory allocation for a new dentry using the slab allocator.

Variables
static serial_ring_buffer_t	__buffer = {0}
static volatile unsigned char	__flush_lock = 0
static spinlock_t	__serial2_producer_lock = {0}
boolean_t	multicore_start

Macro Definition Documentation

INT_ENABLE_OFFSET

#define INT_ENABLE_OFFSET   1

Definition at line 8 of file serial.c.

Referenced by serial_setup().

SERIAL_BUFFER2_MASK

#define SERIAL_BUFFER2_MASK   (SERIAL_BUFFER2_SIZE - 1)

Definition at line 10 of file serial.c.

Referenced by reserve_slot(), and serial2_flush().

SERIAL_BUFFER2_SIZE

#define SERIAL_BUFFER2_SIZE   (4096 * 3)

Definition at line 9 of file serial.c.

Referenced by reserve_slot().

SLOT_DROPPED

#define SLOT_DROPPED   0xFF

Definition at line 15 of file serial.c.

SLOT_EMPTY

#define SLOT_EMPTY   0x00

Definition at line 17 of file serial.c.

SLOT_WRITING

#define SLOT_WRITING   0xFE

Definition at line 13 of file serial.c.

SPIN_LIMIT

#define SPIN_LIMIT   10000u

Definition at line 20 of file serial.c.

Function Documentation

__attribute__()

__attribute__

(

(used, visibility("default"), section(".export"))

)

This function handles memory allocation for a new dentry using the slab allocator.

It also links the dentry to its corresponding VNode (if provided).

Note

This function performs lazy initialization of the dentry slab cache if it does not exist yet.

Parameters

name	The name of the file or directory.
vnode	Pointer to the associated VNode (inode data). Pass NULL if the VNode is not yet available.

Returns

dentry_ptr A pointer to the newly allocated and initialized dentry.

Definition at line 542 of file serial.c.

References __serial2_producer_lock, flags, irq_restore(), irq_save(), KERNEL_API, multicore_start, parse_before_multicore(), parse_multicore(), spin_acquire(), and spin_release().

parse_before_multicore()

static void parse_before_multicore ( __builtin_va_list args, const char * fmt )

static

Definition at line 433 of file serial.c.

References serial_putc(), serial_send_padded(), serial_send_string(), and width.

Referenced by __attribute__().

parse_multicore()

void parse_multicore	(	__builtin_va_list	args,
		const char *	fmt )

Definition at line 271 of file serial.c.

References ptr, put_into_buffer(), serial2_send_number(), serial2_send_unsigned_number(), and strlen().

Referenced by __attribute__().

put_into_buffer()

static void put_into_buffer ( const char * str, uint8_t len )

static

Definition at line 156 of file serial.c.

References __buffer, serial_entry_t::data, idx, len, serial_entry_t::len, reserve_slot(), SLOT_DROPPED, SLOT_EMPTY, SLOT_WRITING, SPIN_LIMIT, and str().

Referenced by parse_multicore(), serial2_send_number(), and serial2_send_unsigned_number().

reserve_slot()

static bool reserve_slot ( uint32_t * out_idx )

static

Definition at line 122 of file serial.c.

References __buffer, head, SERIAL_BUFFER2_MASK, SERIAL_BUFFER2_SIZE, and tail.

Referenced by put_into_buffer().

serial2_flush()

void serial2_flush

(

void

)

Definition at line 359 of file serial.c.

References __buffer, __flush_lock, serial_entry_t::data, head, len, serial_entry_t::len, SERIAL_BUFFER2_MASK, serial_putc(), SLOT_DROPPED, SLOT_EMPTY, SLOT_WRITING, SPIN_LIMIT, and tail.

Referenced by __attribute__().

serial2_send_number()

static void serial2_send_number ( int64_t num, int base )

static

Definition at line 201 of file serial.c.

References base, and put_into_buffer().

Referenced by parse_multicore().

serial2_send_unsigned_number()

static void serial2_send_unsigned_number ( uint64_t num, int base, int limit )

static

Definition at line 235 of file serial.c.

References base, count, and put_into_buffer().

Referenced by parse_multicore().

serial_clear()

void serial_clear

(

void

)

Definition at line 105 of file serial.c.

References serial_printf().

serial_is_transmit_empty()

int serial_is_transmit_empty

(

void

)

Definition at line 56 of file serial.c.

References inb(), and SERIAL_COM1.

Referenced by serial_putc().

serial_putc()

void serial_putc ( char c )

extern

Definition at line 60 of file serial.c.

References outb(), SERIAL_COM1, and serial_is_transmit_empty().

Referenced by parse_before_multicore(), serial2_flush(), serial_send_number(), serial_send_padded(), and serial_send_string().

serial_send_number()

void serial_send_number	(	int64_t	num,
		int	base )

Definition at line 72 of file serial.c.

References base, and serial_putc().

serial_send_padded()

static void serial_send_padded ( uint64_t val, int base, int width, char pad )

static

Definition at line 411 of file serial.c.

References base, serial_putc(), and width.

Referenced by parse_before_multicore().

serial_send_string()

void serial_send_string

(

char *

str

)

Definition at line 67 of file serial.c.

References serial_putc(), and str().

Referenced by parse_before_multicore().

serial_setup()

void serial_setup

(

void

)

Definition at line 46 of file serial.c.

References INT_ENABLE_OFFSET, outb(), and SERIAL_COM1.

Referenced by __attribute__(), and __attribute__().

Variable Documentation

__buffer

serial_ring_buffer_t __buffer = {0}

static

Definition at line 33 of file serial.c.

Referenced by put_into_buffer(), reserve_slot(), and serial2_flush().

__flush_lock

volatile unsigned char __flush_lock = 0

static

Definition at line 39 of file serial.c.

Referenced by serial2_flush().

__serial2_producer_lock

spinlock_t __serial2_producer_lock = {0}

static

Definition at line 40 of file serial.c.

Referenced by __attribute__().

multicore_start

boolean_t multicore_start

extern

Definition at line 105 of file core.c.

Referenced by __attribute__(), and INIT().