Commit 0d5e4e13 authored by Russell King's avatar Russell King

[SERIAL] serial bits from -ac

(from Alan Cox)

This adds support for 68328, 68360, MCF and NB85E serial drivers.
parent 872ce90c
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/* 68328serial.h: Definitions for the mc68328 serial driver.
*
* Copyright (C) 1995 David S. Miller <davem@caip.rutgers.edu>
* Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
* Copyright (C) 1998, 1999 D. Jeff Dionne <jeff@uclinux.org>
* Copyright (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>
*
* VZ Support/Fixes Evan Stawnyczy <e@lineo.ca>
*/
#ifndef _MC683XX_SERIAL_H
#define _MC683XX_SERIAL_H
#include <linux/config.h>
struct serial_struct {
int type;
int line;
int port;
int irq;
int flags;
int xmit_fifo_size;
int custom_divisor;
int baud_base;
unsigned short close_delay;
char reserved_char[2];
int hub6; /* FIXME: We don't have AT&T Hub6 boards! */
unsigned short closing_wait; /* time to wait before closing */
unsigned short closing_wait2; /* no longer used... */
int reserved[4];
};
/*
* For the close wait times, 0 means wait forever for serial port to
* flush its output. 65535 means don't wait at all.
*/
#define S_CLOSING_WAIT_INF 0
#define S_CLOSING_WAIT_NONE 65535
/*
* Definitions for S_struct (and serial_struct) flags field
*/
#define S_HUP_NOTIFY 0x0001 /* Notify getty on hangups and closes
on the callout port */
#define S_FOURPORT 0x0002 /* Set OU1, OUT2 per AST Fourport settings */
#define S_SAK 0x0004 /* Secure Attention Key (Orange book) */
#define S_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
#define S_SPD_MASK 0x0030
#define S_SPD_HI 0x0010 /* Use 56000 instead of 38400 bps */
#define S_SPD_VHI 0x0020 /* Use 115200 instead of 38400 bps */
#define S_SPD_CUST 0x0030 /* Use user-specified divisor */
#define S_SKIP_TEST 0x0040 /* Skip UART test during autoconfiguration */
#define S_AUTO_IRQ 0x0080 /* Do automatic IRQ during autoconfiguration */
#define S_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
#define S_PGRP_LOCKOUT 0x0200 /* Lock out cua opens based on pgrp */
#define S_CALLOUT_NOHUP 0x0400 /* Don't do hangups for cua device */
#define S_FLAGS 0x0FFF /* Possible legal S flags */
#define S_USR_MASK 0x0430 /* Legal flags that non-privileged
* users can set or reset */
/* Internal flags used only by kernel/chr_drv/serial.c */
#define S_INITIALIZED 0x80000000 /* Serial port was initialized */
#define S_CALLOUT_ACTIVE 0x40000000 /* Call out device is active */
#define S_NORMAL_ACTIVE 0x20000000 /* Normal device is active */
#define S_BOOT_AUTOCONF 0x10000000 /* Autoconfigure port on bootup */
#define S_CLOSING 0x08000000 /* Serial port is closing */
#define S_CTS_FLOW 0x04000000 /* Do CTS flow control */
#define S_CHECK_CD 0x02000000 /* i.e., CLOCAL */
/* Software state per channel */
#ifdef __KERNEL__
/*
* I believe this is the optimal setting that reduces the number of interrupts.
* At high speeds the output might become a little "bursted" (use USTCNT_TXHE
* if that bothers you), but in most cases it will not, since we try to
* transmit characters every time rs_interrupt is called. Thus, quite often
* you'll see that a receive interrupt occures before the transmit one.
* -- Vladimir Gurevich
*/
#define USTCNT_TX_INTR_MASK (USTCNT_TXEE)
/*
* 68328 and 68EZ328 UARTS are a little bit different. EZ328 has special
* "Old data interrupt" which occures whenever the data stay in the FIFO
* longer than 30 bits time. This allows us to use FIFO without compromising
* latency. '328 does not have this feature and without the real 328-based
* board I would assume that RXRE is the safest setting.
*
* For EZ328 I use RXHE (Half empty) interrupt to reduce the number of
* interrupts. RXFE (receive queue full) causes the system to loose data
* at least at 115200 baud
*
* If your board is busy doing other stuff, you might consider to use
* RXRE (data ready intrrupt) instead.
*
* The other option is to make these INTR masks run-time configurable, so
* that people can dynamically adapt them according to the current usage.
* -- Vladimir Gurevich
*/
/* (es) */
#if defined(CONFIG_M68EZ328) || defined(CONFIG_M68VZ328)
#define USTCNT_RX_INTR_MASK (USTCNT_RXHE | USTCNT_ODEN)
#elif defined(CONFIG_M68328)
#define USTCNT_RX_INTR_MASK (USTCNT_RXRE)
#else
#error Please, define the Rx interrupt events for your CPU
#endif
/* (/es) */
/*
* This is our internal structure for each serial port's state.
*
* Many fields are paralleled by the structure used by the serial_struct
* structure.
*
* For definitions of the flags field, see tty.h
*/
struct m68k_serial {
char soft_carrier; /* Use soft carrier on this channel */
char break_abort; /* Is serial console in, so process brk/abrt */
char is_cons; /* Is this our console. */
/* We need to know the current clock divisor
* to read the bps rate the chip has currently
* loaded.
*/
unsigned char clk_divisor; /* May be 1, 16, 32, or 64 */
int baud;
int magic;
int baud_base;
int port;
int irq;
int flags; /* defined in tty.h */
int type; /* UART type */
struct tty_struct *tty;
int read_status_mask;
int ignore_status_mask;
int timeout;
int xmit_fifo_size;
int custom_divisor;
int x_char; /* xon/xoff character */
int close_delay;
unsigned short closing_wait;
unsigned short closing_wait2;
unsigned long event;
unsigned long last_active;
int line;
int count; /* # of fd on device */
int blocked_open; /* # of blocked opens */
long session; /* Session of opening process */
long pgrp; /* pgrp of opening process */
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
struct workqueue tqueue;
struct workqueue tqueue_hangup;
struct termios normal_termios;
struct termios callout_termios;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
};
#define SERIAL_MAGIC 0x5301
/*
* The size of the serial xmit buffer is 1 page, or 4096 bytes
*/
#define SERIAL_XMIT_SIZE 4096
/*
* Events are used to schedule things to happen at timer-interrupt
* time, instead of at rs interrupt time.
*/
#define RS_EVENT_WRITE_WAKEUP 0
/*
* Define the number of ports supported and their irqs.
*/
#ifndef CONFIG_68328_SERIAL_UART2
#define NR_PORTS 1
#define UART_IRQ_DEFNS {UART_IRQ_NUM}
#else
#define NR_PORTS 2
#define UART_IRQ_DEFNS {UART1_IRQ_NUM, UART2_IRQ_NUM}
#endif
#endif /* __KERNEL__ */
#endif /* !(_MC683XX_SERIAL_H) */
This diff is collapsed.
...@@ -325,15 +325,58 @@ config SERIAL_SUNSAB ...@@ -325,15 +325,58 @@ config SERIAL_SUNSAB
(PCI) UltraSPARC systems. Say Y or M if you want to be able to these (PCI) UltraSPARC systems. Say Y or M if you want to be able to these
serial ports. serial ports.
config V850E_NB85E_UART
bool "NEC V850E on-chip UART support"
depends on V850E_NB85E || V850E2_ANNA
default y
config V850E_NB85E_UART_CONSOLE
bool "Use NEC V850E on-chip UART for console"
depends on V850E_NB85E_UART
config SERIAL_CORE config SERIAL_CORE
tristate tristate
default m if SERIAL_AMBA!=y && SERIAL_CLPS711X!=y && SERIAL_21285!=y && !SERIAL_SA1100 && !SERIAL_ANAKIN && !SERIAL_UART00 && SERIAL_8250!=y && !SERIAL_ROCKETPORT && !SERIAL_SUNCORE && (SERIAL_AMBA=m || SERIAL_CLPS711X=m || SERIAL_21285=m || SERIAL_8250=m) default m if SERIAL_AMBA!=y && SERIAL_CLPS711X!=y && SERIAL_21285!=y && !SERIAL_SA1100 && !SERIAL_ANAKIN && !SERIAL_UART00 && SERIAL_8250!=y && !SERIAL_ROCKETPORT && !SERIAL_SUNCORE && !V850E_NB85E_UART && (SERIAL_AMBA=m || SERIAL_CLPS711X=m || SERIAL_21285=m || SERIAL_8250=m)
default y if SERIAL_AMBA=y || SERIAL_CLPS711X=y || SERIAL_21285=y || SERIAL_SA1100 || SERIAL_ANAKIN || SERIAL_UART00 || SERIAL_8250=y || SERIAL_ROCKETPORT || SERIAL_SUNCORE default y if SERIAL_AMBA=y || SERIAL_CLPS711X=y || SERIAL_21285=y || SERIAL_SA1100 || SERIAL_ANAKIN || SERIAL_UART00 || SERIAL_8250=y || SERIAL_ROCKETPORT || SERIAL_SUNCORE || V850E_NB85E_UART
config SERIAL_CORE_CONSOLE config SERIAL_CORE_CONSOLE
bool bool
depends on SERIAL_AMBA_CONSOLE || SERIAL_CLPS711X_CONSOLE || SERIAL_21285_CONSOLE || SERIAL_SA1100_CONSOLE || SERIAL_ANAKIN_CONSOLE || SERIAL_UART00_CONSOLE || SERIAL_8250_CONSOLE || SERIAL_SUNCORE depends on SERIAL_AMBA_CONSOLE || SERIAL_CLPS711X_CONSOLE || SERIAL_21285_CONSOLE || SERIAL_SA1100_CONSOLE || SERIAL_ANAKIN_CONSOLE || SERIAL_UART00_CONSOLE || SERIAL_8250_CONSOLE || SERIAL_SUNCORE || V850E_NB85E_UART_CONSOLE
default y default y
config SERIAL_68328
bool "68328 serial support"
depends on M68328 || M68EZ328 || M68VZ328
help
This driver supports the built-in serial port of the Motorola 68328
(standard, EZ and VZ varities).
config SERIAL_68328_RTS_CTS
bool "Support RTS/CTS on 68328 serial port"
depends on SERIAL_68328
config SERIAL_COLDFIRE
bool "ColdFire serial support"
depends on COLDFIRE
help
This driver supports the built-in serial ports of the Motorola ColdFire
family of CPUs.
config SERIAL_68360_SMC
bool "68360 SMC uart support"
depends on M68360
help
This driver supports the SMC serial ports of the Motorola 68360 CPU.
config SERIAL_68360_SCC
bool "68360 SCC uart support"
depends on M68360
help
This driver supports the SCC serial ports of the Motorola 68360 CPU.
config 68360_SERIAL
bool
depends on SERIAL_68360_SMC || SERIAL_68630_SCC
endmenu endmenu
...@@ -24,5 +24,9 @@ obj-$(CONFIG_SERIAL_SUNCORE) += suncore.o ...@@ -24,5 +24,9 @@ obj-$(CONFIG_SERIAL_SUNCORE) += suncore.o
obj-$(CONFIG_SERIAL_SUNZILOG) += sunzilog.o obj-$(CONFIG_SERIAL_SUNZILOG) += sunzilog.o
obj-$(CONFIG_SERIAL_SUNSU) += sunsu.o obj-$(CONFIG_SERIAL_SUNSU) += sunsu.o
obj-$(CONFIG_SERIAL_SUNSAB) += sunsab.o obj-$(CONFIG_SERIAL_SUNSAB) += sunsab.o
obj-$(CONFIG_SERIAL_68328) += 68328serial.o
obj-$(CONFIG_SERIAL_68360) += 68360serial.o
obj-$(CONFIG_SERIAL_COLDFIRE) += mcfserial.o
obj-$(CONFIG_V850E_NB85E_UART) += nb85e_uart.o
include $(TOPDIR)/Rules.make include $(TOPDIR)/Rules.make
This diff is collapsed.
/*
* mcfserial.c -- serial driver for ColdFire internal UARTS.
*
* Copyright (c) 1999 Greg Ungerer <gerg@snapgear.com>
* Copyright (c) 2000-2001 Lineo, Inc. <www.lineo.com>
* Copyright (c) 2002 SnapGear Inc., <www.snapgear.com>
*
* Based on code from 68332serial.c which was:
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1998 TSHG
* Copyright (c) 1999 Rt-Control Inc. <jeff@uclinux.org>
*/
#ifndef _MCF_SERIAL_H
#define _MCF_SERIAL_H
#include <linux/config.h>
#include <linux/serial.h>
#ifdef __KERNEL__
/*
* Define a local serial stats structure.
*/
struct mcf_stats {
unsigned int rx;
unsigned int tx;
unsigned int rxbreak;
unsigned int rxframing;
unsigned int rxparity;
unsigned int rxoverrun;
};
/*
* This is our internal structure for each serial port's state.
* Each serial port has one of these structures associated with it.
*/
struct mcf_serial {
int magic;
unsigned int addr; /* UART memory address */
int irq;
int flags; /* defined in tty.h */
int type; /* UART type */
struct tty_struct *tty;
unsigned char imr; /* Software imr register */
unsigned int baud;
int sigs;
int custom_divisor;
int x_char; /* xon/xoff character */
int baud_base;
int close_delay;
unsigned short closing_wait;
unsigned short closing_wait2;
unsigned long event;
int line;
int count; /* # of fd on device */
int blocked_open; /* # of blocked opens */
long session; /* Session of opening process */
long pgrp; /* pgrp of opening process */
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
struct mcf_stats stats;
struct work_struct tqueue;
struct work_struct tqueue_hangup;
struct termios normal_termios;
struct termios callout_termios;
#if LINUX_VERSION_CODE <= 0x020100
struct wait_queue *open_wait;
struct wait_queue *close_wait;
#else
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
#endif
};
#endif /* __KERNEL__ */
#endif /* _MCF_SERIAL_H */
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