freebsd-dev/sys/dev/uart
Benno Rice 58957d8717 Allow uart(4)'s ns8250 driver to work with devices whose regshift is > 0.
- Rename REG_DL to REG_DLL and REG_DLH.
- Always treat DLL and DLH as two separate 8-bit registers instead of one
  16-bit register.

Additionally, remove the probe for the high 4 bits of IER being 0 and don't
assume we can always read/write 0 to/from those bits.

These changes allow uart(4) to drive the UARTs on the Intel XScale PXA255.

Reviewed by:	marcel
2006-05-23 00:41:12 +00:00
..
uart_bus_acpi.c
uart_bus_ebus.c Remove unused variable 'error'. Forgotten in previous commit. 2006-04-02 21:58:09 +00:00
uart_bus_isa.c
uart_bus_pccard.c o Style(9) nits 2005-10-28 06:27:53 +00:00
uart_bus_pci.c o Add 5 Timedia single port serial cards. 2006-04-27 17:08:30 +00:00
uart_bus_puc.c Rewrite of puc(4). Significant changes are: 2006-04-28 21:21:53 +00:00
uart_bus_scc.c Add scc(4), a driver for serial communications controllers. These 2006-03-30 18:33:22 +00:00
uart_bus.h Implement the ipend() method of the serdev I/F. 2006-04-28 18:29:23 +00:00
uart_core.c Implement the ipend() method of the serdev I/F. 2006-04-28 18:29:23 +00:00
uart_cpu_amd64.c Make uart_getenv() not be ns8250 dependent. This will allow, in the future, 2005-12-12 21:00:58 +00:00
uart_cpu_i386.c Make uart_getenv() not be ns8250 dependent. This will allow, in the future, 2005-12-12 21:00:58 +00:00
uart_cpu_ia64.c Make uart_getenv() not be ns8250 dependent. This will allow, in the future, 2005-12-12 21:00:58 +00:00
uart_cpu_pc98.c Make uart_getenv() not be ns8250 dependent. This will allow, in the future, 2005-12-12 21:00:58 +00:00
uart_cpu_powerpc.c Allow uart(4) to be built on PowerPC. 2006-03-31 01:42:55 +00:00
uart_cpu_sparc64.c - Add support for using LOM (Lights Out Management) and RSC (Remote System 2006-02-04 23:27:16 +00:00
uart_cpu.h Don't hold the hardware mutex across getc(). It can wait indefinitely 2006-04-01 19:04:54 +00:00
uart_dbg.c
uart_dev_ns8250.c Allow uart(4)'s ns8250 driver to work with devices whose regshift is > 0. 2006-05-23 00:41:12 +00:00
uart_dev_sab82532.c Don't hold the hardware mutex across getc(). It can wait indefinitely 2006-04-01 19:04:54 +00:00
uart_dev_z8530.c o A divisor of 0 is perfectly valid. Reserve -1 for an invalid 2006-05-12 23:24:45 +00:00
uart_if.m
uart_kbd_sun_tables.h
uart_kbd_sun.c MFp4: 2006-02-24 02:42:26 +00:00
uart_kbd_sun.h
uart_subr.c Make uart_getenv() not be ns8250 dependent. This will allow, in the future, 2005-12-12 21:00:58 +00:00
uart_tty.c Don't open if we're going away. 2006-03-30 03:26:52 +00:00
uart.h