* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#ifndef LINUX_SERIAL_CORE_H
+#define LINUX_SERIAL_CORE_H
/*
* The type definitions. These are from Ted Ts'o's serial.h
/* Parisc type numbers. */
#define PORT_MUX 48
+/* Atmel AT91 / AT32 SoC */
+#define PORT_ATMEL 49
+
/* Macintosh Zilog type numbers */
#define PORT_MAC_ZILOG 50 /* m68k : not yet implemented */
#define PORT_PMAC_ZILOG 51
/* MPC52xx type numbers */
#define PORT_MPC52xx 59
+/* IBM icom */
+#define PORT_ICOM 60
+
+/* Samsung S3C2440 SoC */
+#define PORT_S3C2440 61
+
+/* Motorola i.MX SoC */
+#define PORT_IMX 62
+
+/* Marvell MPSC */
+#define PORT_MPSC 63
+
+/* TXX9 type number */
+#define PORT_TXX9 64
+
+/* NEC VR4100 series SIU/DSIU */
+#define PORT_VR41XX_SIU 65
+#define PORT_VR41XX_DSIU 66
+
+/* Samsung S3C2400 SoC */
+#define PORT_S3C2400 67
+
+/* M32R SIO */
+#define PORT_M32R_SIO 68
+
+/*Digi jsm */
+#define PORT_JSM 69
+
+#define PORT_IP3106 70
+
+/* Hilscher netx */
+#define PORT_NETX 71
+
+/* SUN4V Hypervisor Console */
+#define PORT_SUNHV 72
+
+#define PORT_S3C2412 73
+
+/* Xilinx uartlite */
+#define PORT_UARTLITE 74
+
#ifdef __KERNEL__
-#include <linux/config.h>
+#include <linux/compiler.h>
#include <linux/interrupt.h>
#include <linux/circ_buf.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/mutex.h>
struct uart_port;
struct uart_info;
unsigned int (*tx_empty)(struct uart_port *);
void (*set_mctrl)(struct uart_port *, unsigned int mctrl);
unsigned int (*get_mctrl)(struct uart_port *);
- void (*stop_tx)(struct uart_port *, unsigned int tty_stop);
- void (*start_tx)(struct uart_port *, unsigned int tty_start);
+ void (*stop_tx)(struct uart_port *);
+ void (*start_tx)(struct uart_port *);
void (*send_xchar)(struct uart_port *, char ch);
void (*stop_rx)(struct uart_port *);
void (*enable_ms)(struct uart_port *);
void (*break_ctl)(struct uart_port *, int ctl);
int (*startup)(struct uart_port *);
void (*shutdown)(struct uart_port *);
- void (*set_termios)(struct uart_port *, struct termios *new,
- struct termios *old);
+ void (*set_termios)(struct uart_port *, struct ktermios *new,
+ struct ktermios *old);
void (*pm)(struct uart_port *, unsigned int state,
unsigned int oldstate);
int (*set_wake)(struct uart_port *, unsigned int state);
__u32 buf_overrun;
};
+typedef unsigned int __bitwise__ upf_t;
+
struct uart_port {
spinlock_t lock; /* port lock */
unsigned int iobase; /* in/out[bwl] */
- char *membase; /* read/write[bwl] */
+ unsigned char __iomem *membase; /* read/write[bwl] */
unsigned int irq; /* irq number */
unsigned int uartclk; /* base uart clock */
- unsigned char fifosize; /* tx fifo size */
+ unsigned int fifosize; /* tx fifo size */
unsigned char x_char; /* xon/xoff char */
unsigned char regshift; /* reg offset shift */
unsigned char iotype; /* io access style */
+ unsigned char unused1;
#define UPIO_PORT (0)
#define UPIO_HUB6 (1)
#define UPIO_MEM (2)
#define UPIO_MEM32 (3)
+#define UPIO_AU (4) /* Au1x00 type IO */
+#define UPIO_TSI (5) /* Tsi108/109 type IO */
unsigned int read_status_mask; /* driver specific */
unsigned int ignore_status_mask; /* driver specific */
unsigned long sysrq; /* sysrq timeout */
#endif
- unsigned int flags;
-
-#define UPF_FOURPORT (1 << 1)
-#define UPF_SAK (1 << 2)
-#define UPF_SPD_MASK (0x1030)
-#define UPF_SPD_HI (0x0010)
-#define UPF_SPD_VHI (0x0020)
-#define UPF_SPD_CUST (0x0030)
-#define UPF_SPD_SHI (0x1000)
-#define UPF_SPD_WARP (0x1010)
-#define UPF_SKIP_TEST (1 << 6)
-#define UPF_AUTO_IRQ (1 << 7)
-#define UPF_HARDPPS_CD (1 << 11)
-#define UPF_LOW_LATENCY (1 << 13)
-#define UPF_BUGGY_UART (1 << 14)
-#define UPF_AUTOPROBE (1 << 15)
-#define UPF_MAGIC_MULTIPLIER (1 << 16)
-#define UPF_BOOT_ONLYMCA (1 << 22)
-#define UPF_CONS_FLOW (1 << 23)
-#define UPF_SHARE_IRQ (1 << 24)
-#define UPF_BOOT_AUTOCONF (1 << 28)
-#define UPF_IOREMAP (1 << 31)
-
-#define UPF_CHANGE_MASK (0x17fff)
-#define UPF_USR_MASK (UPF_SPD_MASK|UPF_LOW_LATENCY)
+ upf_t flags;
+
+#define UPF_FOURPORT ((__force upf_t) (1 << 1))
+#define UPF_SAK ((__force upf_t) (1 << 2))
+#define UPF_SPD_MASK ((__force upf_t) (0x1030))
+#define UPF_SPD_HI ((__force upf_t) (0x0010))
+#define UPF_SPD_VHI ((__force upf_t) (0x0020))
+#define UPF_SPD_CUST ((__force upf_t) (0x0030))
+#define UPF_SPD_SHI ((__force upf_t) (0x1000))
+#define UPF_SPD_WARP ((__force upf_t) (0x1010))
+#define UPF_SKIP_TEST ((__force upf_t) (1 << 6))
+#define UPF_AUTO_IRQ ((__force upf_t) (1 << 7))
+#define UPF_HARDPPS_CD ((__force upf_t) (1 << 11))
+#define UPF_LOW_LATENCY ((__force upf_t) (1 << 13))
+#define UPF_BUGGY_UART ((__force upf_t) (1 << 14))
+#define UPF_MAGIC_MULTIPLIER ((__force upf_t) (1 << 16))
+#define UPF_CONS_FLOW ((__force upf_t) (1 << 23))
+#define UPF_SHARE_IRQ ((__force upf_t) (1 << 24))
+#define UPF_BOOT_AUTOCONF ((__force upf_t) (1 << 28))
+#define UPF_DEAD ((__force upf_t) (1 << 30))
+#define UPF_IOREMAP ((__force upf_t) (1 << 31))
+
+#define UPF_CHANGE_MASK ((__force upf_t) (0x17fff))
+#define UPF_USR_MASK ((__force upf_t) (UPF_SPD_MASK|UPF_LOW_LATENCY))
unsigned int mctrl; /* current modem ctrl settings */
unsigned int timeout; /* character-based timeout */
unsigned int type; /* port type */
- struct uart_ops *ops;
+ const struct uart_ops *ops;
unsigned int custom_divisor;
unsigned int line; /* port index */
unsigned long mapbase; /* for ioremap */
* within.
*/
struct uart_state {
- unsigned int close_delay;
- unsigned int closing_wait;
+ unsigned int close_delay; /* msec */
+ unsigned int closing_wait; /* msec */
#define USF_CLOSING_WAIT_INF (0)
-#define USF_CLOSING_WAIT_NONE (65535)
+#define USF_CLOSING_WAIT_NONE (~0U)
int count;
int pm_state;
struct uart_info *info;
struct uart_port *port;
- struct semaphore sem;
+ struct mutex mutex;
};
-#define UART_XMIT_SIZE 1024
+#define UART_XMIT_SIZE PAGE_SIZE
+
+typedef unsigned int __bitwise__ uif_t;
+
/*
* This is the state information which is only valid when the port
* is open; it may be freed by the core driver once the device has
struct uart_info {
struct tty_struct *tty;
struct circ_buf xmit;
- unsigned int flags;
+ uif_t flags;
/*
- * These are the flags that specific to info->flags, and reflect our
- * internal state. They can not be accessed via port->flags. Low
- * level drivers must not change these, but may query them instead.
+ * Definitions for info->flags. These are _private_ to serial_core, and
+ * are specific to this structure. They may be queried by low level drivers.
*/
-#define UIF_CHECK_CD (1 << 25)
-#define UIF_CTS_FLOW (1 << 26)
-#define UIF_NORMAL_ACTIVE (1 << 29)
-#define UIF_INITIALIZED (1 << 31)
-
- unsigned char *tmpbuf;
- struct semaphore tmpbuf_sem;
+#define UIF_CHECK_CD ((__force uif_t) (1 << 25))
+#define UIF_CTS_FLOW ((__force uif_t) (1 << 26))
+#define UIF_NORMAL_ACTIVE ((__force uif_t) (1 << 29))
+#define UIF_INITIALIZED ((__force uif_t) (1 << 31))
+#define UIF_SUSPENDED ((__force uif_t) (1 << 30))
int blocked_open;
struct module *owner;
const char *driver_name;
const char *dev_name;
- const char *devfs_name;
int major;
int minor;
int nr;
*/
void uart_update_timeout(struct uart_port *port, unsigned int cflag,
unsigned int baud);
-unsigned int uart_get_baud_rate(struct uart_port *port, struct termios *termios,
- struct termios *old, unsigned int min,
+unsigned int uart_get_baud_rate(struct uart_port *port, struct ktermios *termios,
+ struct ktermios *old, unsigned int min,
unsigned int max);
unsigned int uart_get_divisor(struct uart_port *port, unsigned int baud);
int uart_set_options(struct uart_port *port, struct console *co, int baud,
int parity, int bits, int flow);
struct tty_driver *uart_console_device(struct console *co, int *index);
+void uart_console_write(struct uart_port *port, const char *s,
+ unsigned int count,
+ void (*putchar)(struct uart_port *, int));
/*
* Port/driver registration/removal
*/
int uart_register_driver(struct uart_driver *uart);
void uart_unregister_driver(struct uart_driver *uart);
-void uart_unregister_port(struct uart_driver *reg, int line);
-int uart_register_port(struct uart_driver *reg, struct uart_port *port);
int uart_add_one_port(struct uart_driver *reg, struct uart_port *port);
int uart_remove_one_port(struct uart_driver *reg, struct uart_port *port);
+int uart_match_port(struct uart_port *port1, struct uart_port *port2);
/*
* Power Management
/*
* The following are helper functions for the low level drivers.
*/
-#ifdef SUPPORT_SYSRQ
static inline int
-uart_handle_sysrq_char(struct uart_port *port, unsigned int ch,
- struct pt_regs *regs)
+uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
{
+#ifdef SUPPORT_SYSRQ
if (port->sysrq) {
if (ch && time_before(jiffies, port->sysrq)) {
- handle_sysrq(ch, regs, NULL);
+ handle_sysrq(ch, port->info->tty);
port->sysrq = 0;
return 1;
}
port->sysrq = 0;
}
+#endif
return 0;
}
-#else
-#define uart_handle_sysrq_char(port,ch,regs) (0)
+#ifndef SUPPORT_SYSRQ
+#define uart_handle_sysrq_char(port,ch) uart_handle_sysrq_char(port, 0)
#endif
/*
port->sysrq = 0;
}
#endif
- if (info->flags & UPF_SAK)
+ if (port->flags & UPF_SAK)
do_SAK(info->tty);
return 0;
}
if (tty->hw_stopped) {
if (status) {
tty->hw_stopped = 0;
- port->ops->start_tx(port, 0);
+ port->ops->start_tx(port);
uart_write_wakeup(port);
}
} else {
if (!status) {
tty->hw_stopped = 1;
- port->ops->stop_tx(port, 0);
+ port->ops->stop_tx(port);
}
}
}
}
+#include <linux/tty_flip.h>
+
+static inline void
+uart_insert_char(struct uart_port *port, unsigned int status,
+ unsigned int overrun, unsigned int ch, unsigned int flag)
+{
+ struct tty_struct *tty = port->info->tty;
+
+ if ((status & port->ignore_status_mask & ~overrun) == 0)
+ tty_insert_flip_char(tty, ch, flag);
+
+ /*
+ * Overrun is special. Since it's reported immediately,
+ * it doesn't affect the current character.
+ */
+ if (status & ~port->ignore_status_mask & overrun)
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+}
+
/*
* UART_ENABLE_MS - determine if port should enable modem status irqs
*/
!((cflag) & CLOCAL))
#endif
+
+#endif /* LINUX_SERIAL_CORE_H */