PERFORCE change 37416 for review

[Marcel Moolenaar]

http://perforce.freebsd.org/chv.cgi?CH=37416

Change 37416 by marcel at marcel_nfs on 2003/09/02 20:33:09

	o Remove inclusion of <sys/systm.h>. It was needed for uart_debug(),
	  which got axed yesterday.
	o Remove sc_xonxoff, which got added yesterday. We're not going to
	  support XON/XOFF flow control with hardware support. It's way too
	  complicated to do it right and we already have the support in
	  the tty layer.
	o Replace sc_rtscts with sc_hwiflow and sc_hwoflow. We'd like to
	  take advantage of hardware flow control, even if only input or
	  output flow control works for us. If we have a single flag, then
	  it's a both or neither situation. Also, since we seperate flags
	  for input and output flow control in the termios structure, it
	  makes sense to keep them seperated as long as possible.

Affected files ...

.. //depot/projects/uart/dev/uart/uart_bus.h#24 edit

Differences ...

==== //depot/projects/uart/dev/uart/uart_bus.h#24 (text+ko) ====

@@ -29,8 +29,6 @@
 #ifndef _DEV_UART_BUS_H_
 #define _DEV_UART_BUS_H_
 
-#include <sys/systm.h>
-
 /* Drain and flush targets. */
 #define	UART_DRAIN_RECEIVER	0x0001
 #define	UART_DRAIN_TRANSMITTER	0x0002
@@ -111,12 +109,12 @@
 	int		sc_callout:1;	/* This UART is opened for callout. */
 	int		sc_fastintr:1;	/* This UART uses fast interrupts. */
 	int		sc_hasfifo:1;	/* This UART has FIFOs. */
+	int		sc_hwiflow:1;	/* This UART has HW input flow ctl. */
+	int		sc_hwoflow:1;	/* This UART has HW output flow ctl. */
 	int		sc_leaving:1;	/* This UART is going away. */
 	int		sc_opened:1;	/* This UART is open for business. */
 	int		sc_polled:1;	/* This UART has no interrupts. */
-	int		sc_rtscts:1;	/* This UART can do HW flow control. */
 	int		sc_txbusy:1;	/* This UART is transmitting. */
-	int		sc_xonxoff:1;	/* This UART can do SW flow control. */
 
 	struct uart_devinfo *sc_sysdev;	/* System device (or NULL). */