Colin Percival 39d6144dcd ns8250_drain: Drain without DELAY first ... In virtual machines with virtual UARTs which have fictitious baud rates, it may be possible to drain the receive queue very quickly, without needing to DELAY after each character. Attempt to read (and discard) the receive queue as fast as possible, stopping for a DELAY only when LSR_RXRDY is no longer asserted; assume that we have finished draining the queue when LSR_RXRDY is asserted both before and after a DELAY. This speeds up the boot process in FreeBSD/Firecracker by 27 ms. Reviewed by: imp, jrtc27 Sponsored by: https://www.patreon.com/cperciva Differential Revision: https://reviews.freebsd.org/D36184		2022-10-07 17:51:54 -07:00
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uart.h	uart: Remove sbbc reference	2022-09-30 18:26:45 -06:00
uart_bus.h
uart_bus_acpi.c	uart_bus_acpi: Read clock frequency from bus	2022-09-07 09:44:58 +02:00
uart_bus_fdt.c
uart_bus_isa.c
uart_bus_pci.c
uart_bus_puc.c
uart_bus_scc.c
uart_core.c
uart_cpu.h
uart_cpu_acpi.c
uart_cpu_acpi.h
uart_cpu_arm64.c	uart: uart_cpu_arm64: fix the build without FDT	2022-09-29 14:33:32 -05:00
uart_cpu_fdt.c
uart_cpu_fdt.h
uart_cpu_powerpc.c
uart_cpu_x86.c	uart: Don't check SPCR tables if !late_console	2022-07-13 23:17:44 -07:00
uart_dbg.c
uart_dev_imx.c
uart_dev_imx.h
uart_dev_lowrisc.c
uart_dev_lowrisc.h
uart_dev_msm.c
uart_dev_msm.h
uart_dev_mu.c
uart_dev_mvebu.c
uart_dev_ns8250.c	ns8250_drain: Drain without DELAY first	2022-10-07 17:51:54 -07:00
uart_dev_ns8250.h
uart_dev_pl011.c
uart_dev_quicc.c
uart_dev_snps.c	uart_dev_snps: Fix device probing	2022-10-06 16:42:51 +02:00
uart_dev_ti8250.c
uart_dev_z8530.c
uart_if.m
uart_ppstypes.h
uart_subr.c	arm: Catch up with Samsung S3C2xx0 code removal	2022-09-30 18:12:10 -06:00
uart_tty.c