John Baldwin 64c4dfcd26 Export a sysctl count of RX FIFO overrun events. ... uart(4) backends currently detect RX FIFO overrun errors and report them to the uart(4) core layer. They are then reported to the generic TTY layer which promptly ignores them. As a result, there is currently no good way to determine if a uart is experiencing RX FIFO overruns. One could add a generic per-tty counter, but there did not appear to be a good way to export those. Instead, add a sysctl under the uart(4) sysctl tree to export the count of overruns. Reviewed by: brooks MFC after: 2 weeks Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D24368		2020-04-13 20:59:09 +00:00
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uart_bus_acpi.c
uart_bus_fdt.c
uart_bus_isa.c
uart_bus_pccard.c
uart_bus_pci.c	Add Denverton UART PCI ID	2020-02-28 15:59:35 +00:00
uart_bus_puc.c
uart_bus_scc.c
uart_bus.h	Export a sysctl count of RX FIFO overrun events.	2020-04-13 20:59:09 +00:00
uart_core.c	Export a sysctl count of RX FIFO overrun events.	2020-04-13 20:59:09 +00:00
uart_cpu_acpi.c
uart_cpu_acpi.h
uart_cpu_arm64.c
uart_cpu_fdt.c
uart_cpu_fdt.h
uart_cpu_powerpc.c
uart_cpu_x86.c
uart_cpu.h
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	Correct baud rate error calculation.	2020-04-13 20:43:57 +00:00
uart_dev_ns8250.h
uart_dev_pl011.c
uart_dev_quicc.c
uart_dev_sab82532.c
uart_dev_snps.c
uart_dev_ti8250.c
uart_dev_z8530.c
uart_if.m
uart_ppstypes.h
uart_subr.c
uart_tty.c
uart.h