NetBSD

Commit Graph

Author	SHA1	Message	Date
scw	54f42f17fc	Don't bother spinning in the console 'putc' routine for the transmitter to become idle; it actually doesn't matter as the chip takes care of this for us. It would also spin endlessly in certain circumstances during shutdown. While I'm here, (finally) add code to allow sending BREAK characters.	1999-11-28 12:23:18 +00:00
scw	3981e235b7	Zero is a valid value for ch_tcor and ch_rcor, so be a bit more conservative when deciding if the baud-rate should be changed. (Spotted by Bruce Martin) Also fix the mask used when setting the Rx FIFO threshold to zero. I don't yet understand how the Rx side worked with the code as it was. ;-}	1999-11-11 09:38:43 +00:00
scw	d1c5384e9a	Minor optimisation.	1999-09-18 09:45:05 +00:00
scw	ba922d31d8	Re-work the Tx side to avoid calling into the tty layer at interrupt time. This was the cause of the 'mmu fault' panics seen by several people, as the Tx interrupt is at a higher priority that spltty().	1999-08-01 09:35:05 +00:00
scw	9737cf763a	Fix a problem where no Tx Empty interrupt ever happened if CTS was deasserted and we wanted to change parameters to -crtscts This effectively stalled the transmitter since with TS_BUSY set we only change parameters during the Tx interrupt handler.	1999-04-03 13:13:19 +00:00
scw	fc658e2d3e	Don't update the CORx registers unless they really have changed. Also make console Tx handling wait until the Tx FIFO has drained and the shift-register is empty before sending console characters.	1999-02-21 14:01:50 +00:00
scw	3a5b0d88ca	That #define splserial() really didn't want to be there...	1999-02-20 16:23:39 +00:00
scw	0ed9dc11d7	Delay serial port parameter changes until the Tx FIFO has emptied.	1999-02-20 00:27:29 +00:00
scw	94719c7b9a	New MI front-end for the Cirrus Logic CD240[01] Multi-protocol Communications Controller. This is still a work in progress, but it is functional enough to be usable.	1999-02-13 17:05:19 +00:00

9 Commits