Date: Wed, 14 Mar 2018 02:56:43 +0000 (UTC) From: Eitan Adler <eadler@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r330893 - stable/11/sys/dev/syscons Message-ID: <201803140256.w2E2uhgs024419@repo.freebsd.org>
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Author: eadler Date: Wed Mar 14 02:56:43 2018 New Revision: 330893 URL: https://svnweb.freebsd.org/changeset/base/330893 Log: MFC r304758: Reorganise a little to prepare for locking fixes: - in sccnopen(), open the keyboard before the screen. The keyboard currently requires Giant (although it must be spinlocked to work correctly as a console), so the previous order would be a LOR if it has any semblance of locking. - add a (currently dummy) state arg to scgetc(). Modified: stable/11/sys/dev/syscons/syscons.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/dev/syscons/syscons.c ============================================================================== --- stable/11/sys/dev/syscons/syscons.c Wed Mar 14 02:45:42 2018 (r330892) +++ stable/11/sys/dev/syscons/syscons.c Wed Mar 14 02:56:43 2018 (r330893) @@ -79,6 +79,8 @@ __FBSDID("$FreeBSD$"); #include <dev/fb/splashreg.h> #include <dev/syscons/syscons.h> +struct sc_cnstate; /* not used yet */ + #define COLD 0 #define WARM 1 @@ -185,7 +187,7 @@ static void scterm(int unit, int flags); static void scshutdown(void *, int); static void scsuspend(void *); static void scresume(void *); -static u_int scgetc(sc_softc_t *sc, u_int flags); +static u_int scgetc(sc_softc_t *sc, u_int flags, struct sc_cnstate *sp); static void sc_puts(scr_stat *scp, u_char *buf, int len, int kernel); #define SCGETC_CN 1 #define SCGETC_NONBLOCK 2 @@ -750,7 +752,7 @@ sckbdevent(keyboard_t *thiskbd, int event, void *arg) * I don't think this is nessesary, and it doesn't fix * the Xaccel-2.1 keyboard hang, but it can't hurt. XXX */ - while ((c = scgetc(sc, SCGETC_NONBLOCK)) != NOKEY) { + while ((c = scgetc(sc, SCGETC_NONBLOCK, NULL)) != NOKEY) { cur_tty = SC_DEV(sc, sc->cur_scp->index); if (!tty_opened_ns(cur_tty)) @@ -1645,7 +1647,6 @@ sc_cnterm(struct consdev *cp) sc_console = NULL; } -struct sc_cnstate; /* not used yet */ static void sccnclose(sc_softc_t *sc, struct sc_cnstate *sp); static void sccnopen(sc_softc_t *sc, struct sc_cnstate *sp, int flags); @@ -1654,14 +1655,8 @@ sccnopen(sc_softc_t *sc, struct sc_cnstate *sp, int fl { int kbd_mode; - if (!cold && - sc->cur_scp->index != sc_console->index && - sc->cur_scp->smode.mode == VT_AUTO && - sc_console->smode.mode == VT_AUTO) - sc_switch_scr(sc, sc_console->index); - if (sc->kbd == NULL) - return; + goto over_keyboard; /* * Make sure the keyboard is accessible even when the kbd device @@ -1673,6 +1668,14 @@ sccnopen(sc_softc_t *sc, struct sc_cnstate *sp, int fl kbd_mode = K_XLATE; (void)kbdd_ioctl(sc->kbd, KDSKBMODE, (caddr_t)&kbd_mode); kbdd_poll(sc->kbd, TRUE); +over_keyboard: ; + + if (!cold && + sc->cur_scp->index != sc_console->index && + sc->cur_scp->smode.mode == VT_AUTO && + sc_console->smode.mode == VT_AUTO) + sc_switch_scr(sc, sc_console->index); + } static void @@ -1787,7 +1790,7 @@ sc_cngetc(struct consdev *cd) return -1; } - c = scgetc(scp->sc, SCGETC_CN | SCGETC_NONBLOCK); + c = scgetc(scp->sc, SCGETC_CN | SCGETC_NONBLOCK, NULL); switch (KEYFLAGS(c)) { case 0: /* normal char */ @@ -3383,7 +3386,7 @@ sc_init_emulator(scr_stat *scp, char *name) * return NOKEY if there is nothing there. */ static u_int -scgetc(sc_softc_t *sc, u_int flags) +scgetc(sc_softc_t *sc, u_int flags, struct sc_cnstate *sp) { scr_stat *scp; #ifndef SC_NO_HISTORY
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