openwrt/upstream - upstream openwrt

	Commit message (Expand)	Author	Age	Files	Lines
*	AA: ramips: add profile and build image for the TEW-691GR board	Gabor Juhos	2012-10-19	1	-0/+10
*	AA: ramips: add profile and build image for the TEW-692GR board	Gabor Juhos	2012-10-19	1	-0/+16
*	AA: ramips: add profile and build image for the DIR-645 board	Gabor Juhos	2012-10-19	1	-0/+16
*	ramips/rt3883: fix a typo in the ASUS profile	John Crispin	2012-09-15	1	-1/+1
*	ramips: rt3883: add profile and build sysupgrade image for the RT-N56U	Gabor Juhos	2012-04-21	1	-0/+16
*	ramips: rt3883: update package list in the default profile	Gabor Juhos	2012-02-13	1	-1/+1
*	ramips: add preliminary support for the RT3662/RT3883 SoCs	Gabor Juhos	2012-02-13	1	-0/+16

/****************************************************************************** * serial.h * * Framework for serial device drivers. * * Copyright (c) 2003-2005, K A Fraser */ #ifndef __XEN_SERIAL_H__ #define __XEN_SERIAL_H__ struct cpu_user_regs; /* Register a character-receive hook on the specified COM port. */ typedef void (*serial_rx_fn)(char, struct cpu_user_regs *); void serial_set_rx_handler(int handle, serial_rx_fn fn); /* Number of characters we buffer for a polling receiver. */ #define SERIAL_RXBUFSZ 32 #define MASK_SERIAL_RXBUF_IDX(_i) ((_i)&(SERIAL_RXBUFSZ-1)) /* Number of characters we buffer for an interrupt-driven transmitter. */ #define SERIAL_TXBUFSZ 16384 #define MASK_SERIAL_TXBUF_IDX(_i) ((_i)&(SERIAL_TXBUFSZ-1)) struct uart_driver; struct serial_port { /* Uart-driver parameters. */ struct uart_driver *driver; void *uart; /* Number of characters the port can hold for transmit. */ int tx_fifo_size; /* Transmit data buffer (interrupt-driven uart). */ char *txbuf; unsigned int txbufp, txbufc; /* Force synchronous transmit. */ int sync; /* Receiver callback functions (asynchronous receivers). */ serial_rx_fn rx_lo, rx_hi, rx; /* Receive data buffer (polling receivers). */ char rxbuf[SERIAL_RXBUFSZ]; unsigned int rxbufp, rxbufc; /* Serial I/O is concurrency-safe. */ spinlock_t rx_lock, tx_lock; }; struct uart_driver { /* Driver initialisation (pre- and post-IRQ subsystem setup). */ void (*init_preirq)(struct serial_port *); void (*init_postirq)(struct serial_port *); /* Hook to clean up after Xen bootstrap (before domain 0 runs). */ void (*endboot)(struct serial_port *); /* Transmit FIFO ready to receive up to @tx_fifo_size characters? */ int (*tx_empty)(struct serial_port *); /* Put a character onto the serial line. */ void (*putc)(struct serial_port *, char); /* Get a character from the serial line: returns 0 if none available. */ int (*getc)(struct serial_port *, char *); /* Get IRQ number for this port's serial line: returns -1 if none. */ int (*irq)(struct serial_port *); }; /* 'Serial handles' are composed from the following fields. */ #define SERHND_IDX (1<<0) /* COM1 or COM2? */ #define SERHND_HI (1<<1) /* Mux/demux each transferred char by MSB. */ #define SERHND_LO (1<<2) /* Ditto, except that the MSB is cleared. */ #define SERHND_COOKED (1<<3) /* Newline/carriage-return translation? */ /* Two-stage initialisation (before/after IRQ-subsystem initialisation). */ void serial_init_preirq(void); void serial_init_postirq(void); /* Clean-up hook before domain 0 runs. */ void serial_endboot(void); /* Takes a config string and creates a numeric handle on the COM port. */ int serial_parse_handle(char *conf); /* Transmit a single character via the specified COM port. */ void serial_putc(int handle, char c); /* Transmit a NULL-terminated string via the specified COM port. */ void serial_puts(int handle, const char *s); /* * An alternative to registering a character-receive hook. This function * will not return until a character is available. It can safely be * called with interrupts disabled. */ char serial_getc(int handle); /* Forcibly prevent serial lockup when the system is in a bad way. */ /* (NB. This also forces an implicit serial_start_sync()). */ void serial_force_unlock(int handle); /* Start/end a synchronous region (temporarily disable interrupt-driven tx). */ void serial_start_sync(int handle); void serial_end_sync(int handle); /* Return number of bytes headroom in transmit buffer. */ int serial_tx_space(int handle); /* Return irq number for specified serial port (identified by index). */ int serial_irq(int idx); /* * Initialisation and helper functions for uart drivers. */ /* Register a uart on serial port @idx (e.g., @idx==0 is COM1). */ void serial_register_uart(int idx, struct uart_driver *driver, void *uart); /* Place the serial port into asynchronous transmit mode. */ void serial_async_transmit(struct serial_port *port); /* Process work in interrupt context. */ void serial_rx_interrupt(struct serial_port *port, struct cpu_user_regs *regs); void serial_tx_interrupt(struct serial_port *port, struct cpu_user_regs *regs); /* * Initialisers for individual uart drivers. */ /* NB. Any default value can be 0 if it is unknown and must be specified. */ struct ns16550_defaults { int baud; /* default baud rate; BAUD_AUTO == pre-configured */ int data_bits; /* default data bits (5, 6, 7 or 8) */ int parity; /* default parity (n, o, e, m or s) */ int stop_bits; /* default stop bits (1 or 2) */ int irq; /* default irq */ unsigned long io_base; /* default io_base address */ }; void ns16550_init(int index, struct ns16550_defaults *defaults); /* Baud rate was pre-configured before invoking the UART driver. */ #define BAUD_AUTO (-1) #endif /* __XEN_SERIAL_H__ */ /* * Local variables: * mode: C * c-set-style: "BSD" * c-basic-offset: 4 * tab-width: 4 * indent-tabs-mode: nil * End: */