Date: Tue, 10 Oct 2017 20:08:30 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r324503 - head/sys/dev/uart Message-ID: <201710102008.v9AK8U6V061415@repo.freebsd.org>
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Author: emaste Date: Tue Oct 10 20:08:30 2017 New Revision: 324503 URL: https://svnweb.freebsd.org/changeset/base/324503 Log: uart: detect 256-byte FIFOs Submitted by: Zakary Nafziger <worldofzak@gmail.com> Sponsored by: The FreeBSD Foundation Modified: head/sys/dev/uart/uart_dev_ns8250.c Modified: head/sys/dev/uart/uart_dev_ns8250.c ============================================================================== --- head/sys/dev/uart/uart_dev_ns8250.c Tue Oct 10 19:33:24 2017 (r324502) +++ head/sys/dev/uart/uart_dev_ns8250.c Tue Oct 10 20:08:30 2017 (r324503) @@ -873,7 +873,7 @@ ns8250_bus_probe(struct uart_softc *sc) count = 0; goto describe; } - } while ((lsr & LSR_OE) == 0 && count < 130); + } while ((lsr & LSR_OE) == 0 && count < 260); count--; uart_setreg(bas, REG_MCR, mcr); @@ -894,6 +894,9 @@ ns8250_bus_probe(struct uart_softc *sc) } else if (count >= 112 && count <= 128) { sc->sc_rxfifosz = 128; device_set_desc(sc->sc_dev, "16950 or compatible"); + } else if (count >= 224 && count <= 256) { + sc->sc_rxfifosz = 256; + device_set_desc(sc->sc_dev, "16x50 with 256 byte FIFO"); } else { sc->sc_rxfifosz = 16; device_set_desc(sc->sc_dev,
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