diff options
Diffstat (limited to 'sys/arch/armv7/exynos/exuart.c')
| -rw-r--r-- | sys/arch/armv7/exynos/exuart.c | 939 |
1 files changed, 0 insertions, 939 deletions
diff --git a/sys/arch/armv7/exynos/exuart.c b/sys/arch/armv7/exynos/exuart.c deleted file mode 100644 index ee5490ec239..00000000000 --- a/sys/arch/armv7/exynos/exuart.c +++ /dev/null @@ -1,939 +0,0 @@ -/* $OpenBSD: exuart.c,v 1.19 2021/02/04 23:36:31 patrick Exp $ */ -/* - * Copyright (c) 2005 Dale Rahn <drahn@motorola.com> - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <sys/param.h> -#include <sys/ioctl.h> -#include <sys/proc.h> -#include <sys/tty.h> -#include <sys/uio.h> -#include <sys/systm.h> -#include <sys/time.h> -#include <sys/device.h> -#include <sys/syslog.h> -#include <sys/conf.h> -#include <sys/fcntl.h> -#include <sys/select.h> -#include <sys/kernel.h> - -#include <dev/cons.h> - -#ifdef DDB -#include <ddb/db_var.h> -#endif - -#include <machine/bus.h> -#include <machine/fdt.h> -#include <arm/armv7/armv7var.h> -#include <armv7/exynos/exuartreg.h> - -#include <dev/ofw/fdt.h> -#include <dev/ofw/openfirm.h> - -#define DEVUNIT(x) (minor(x) & 0x7f) -#define DEVCUA(x) (minor(x) & 0x80) - -struct exuart_softc { - struct device sc_dev; - bus_space_tag_t sc_iot; - bus_space_handle_t sc_ioh; - struct soft_intrhand *sc_si; - void *sc_irq; - struct tty *sc_tty; - struct timeout sc_diag_tmo; - struct timeout sc_dtr_tmo; - int sc_fifo; - int sc_overflows; - int sc_floods; - int sc_errors; - int sc_halt; - u_int32_t sc_ulcon; - u_int32_t sc_ucon; - u_int32_t sc_ufcon; - u_int32_t sc_umcon; - u_int32_t sc_uintm; - u_int8_t sc_hwflags; -#define COM_HW_NOIEN 0x01 -#define COM_HW_FIFO 0x02 -#define COM_HW_SIR 0x20 -#define COM_HW_CONSOLE 0x40 - u_int8_t sc_swflags; -#define COM_SW_SOFTCAR 0x01 -#define COM_SW_CLOCAL 0x02 -#define COM_SW_CRTSCTS 0x04 -#define COM_SW_MDMBUF 0x08 -#define COM_SW_PPS 0x10 - - u_int8_t sc_initialize; - u_int8_t sc_cua; - u_int16_t *sc_ibuf, *sc_ibufp, *sc_ibufhigh, *sc_ibufend; -#define EXUART_IBUFSIZE 128 -#define EXUART_IHIGHWATER 100 - u_int16_t sc_ibufs[2][EXUART_IBUFSIZE]; -}; - - -int exuartprobe(struct device *parent, void *self, void *aux); -void exuartattach(struct device *parent, struct device *self, void *aux); - -void exuartcnprobe(struct consdev *cp); -void exuartcninit(struct consdev *cp); -int exuartcnattach(bus_space_tag_t iot, bus_addr_t iobase, int rate, - tcflag_t cflag); -int exuartcngetc(dev_t dev); -void exuartcnputc(dev_t dev, int c); -void exuartcnpollc(dev_t dev, int on); -int exuart_param(struct tty *tp, struct termios *t); -void exuart_start(struct tty *); -void exuart_pwroff(struct exuart_softc *sc); -void exuart_diag(void *arg); -void exuart_raisedtr(void *arg); -void exuart_softint(void *arg); -struct exuart_softc *exuart_sc(dev_t dev); - -int exuart_intr(void *); - -/* XXX - we imitate 'com' serial ports and take over their entry points */ -/* XXX: These belong elsewhere */ -cdev_decl(exuart); - -struct cfdriver exuart_cd = { - NULL, "exuart", DV_TTY -}; - -struct cfattach exuart_ca = { - sizeof(struct exuart_softc), exuartprobe, exuartattach -}; - -bus_space_tag_t exuartconsiot; -bus_space_handle_t exuartconsioh; -bus_addr_t exuartconsaddr; -tcflag_t exuartconscflag = TTYDEF_CFLAG; -int exuartdefaultrate = B115200; - -void -exuart_init_cons(void) -{ - struct fdt_reg reg; - void *node, *root; - - if ((node = fdt_find_cons("samsung,exynos4210-uart")) == NULL) - return; - - /* dtb uses serial2, qemu uses serial0 */ - root = fdt_find_node("/"); - if (root == NULL) - panic("%s: could not get fdt root node", __func__); - if (fdt_is_compatible(root, "samsung,universal_c210")) { - if ((node = fdt_find_node("/serial@13800000")) == NULL) { - return; - } - stdout_node = OF_finddevice("/serial@13800000"); - } - - if (fdt_get_reg(node, 0, ®)) - return; - - exuartcnattach(&armv7_bs_tag, reg.addr, B115200, TTYDEF_CFLAG); -} - -int -exuartprobe(struct device *parent, void *self, void *aux) -{ - struct fdt_attach_args *faa = aux; - - return OF_is_compatible(faa->fa_node, "samsung,exynos4210-uart"); -} - -struct cdevsw exuartdev = - cdev_tty_init(3/*XXX NEXUART */ ,exuart); /* 12: serial port */ - -void -exuartattach(struct device *parent, struct device *self, void *aux) -{ - struct fdt_attach_args *faa = aux; - struct exuart_softc *sc = (struct exuart_softc *) self; - int maj; - - if (faa->fa_nreg < 1) - return; - - sc->sc_iot = faa->fa_iot; - - sc->sc_irq = arm_intr_establish_fdt(faa->fa_node, IPL_TTY, - exuart_intr, sc, sc->sc_dev.dv_xname); - if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, faa->fa_reg[0].size, - 0, &sc->sc_ioh)) - panic("%s: bus_space_map failed!", __func__); - - if (stdout_node == faa->fa_node) { - /* Locate the major number. */ - for (maj = 0; maj < nchrdev; maj++) - if (cdevsw[maj].d_open == exuartopen) - break; - cn_tab->cn_dev = makedev(maj, sc->sc_dev.dv_unit); - - printf(": console"); - } - - /* Mask and clear interrupts. */ - bus_space_write_4(sc->sc_iot, sc->sc_ioh, EXUART_UINTM, - EXUART_UINTM_RXD | EXUART_UINTM_ERROR | - EXUART_UINTM_TXD | EXUART_UINTM_MODEM); - bus_space_write_4(sc->sc_iot, sc->sc_ioh, EXUART_UINTP, - EXUART_UINTP_RXD | EXUART_UINTP_ERROR | - EXUART_UINTP_TXD | EXUART_UINTP_MODEM); - - sc->sc_ucon = bus_space_read_4(sc->sc_iot, sc->sc_ioh, EXUART_UCON); - CLR(sc->sc_ucon, EXUART_UCON_RX_TIMEOUT_EMPTY_FIFO); - SET(sc->sc_ucon, EXUART_UCON_RX_INT_TYPE_LEVEL); - SET(sc->sc_ucon, EXUART_UCON_RX_TIMEOUT); - bus_space_write_4(sc->sc_iot, sc->sc_ioh, EXUART_UCON, sc->sc_ucon); - - timeout_set(&sc->sc_diag_tmo, exuart_diag, sc); - timeout_set(&sc->sc_dtr_tmo, exuart_raisedtr, sc); - sc->sc_si = softintr_establish(IPL_TTY, exuart_softint, sc); - - if(sc->sc_si == NULL) - panic("%s: can't establish soft interrupt.", - sc->sc_dev.dv_xname); - - printf("\n"); -} - -int -exuart_intr(void *arg) -{ - struct exuart_softc *sc = arg; - bus_space_tag_t iot = sc->sc_iot; - bus_space_handle_t ioh = sc->sc_ioh; - struct tty *tp; - u_int32_t uintp; - u_int16_t *p; - u_int16_t c; - - uintp = bus_space_read_4(iot, ioh, EXUART_UINTP); - if (uintp == 0) - return (0); - - if (sc->sc_tty == NULL) - return (0); - - tp = sc->sc_tty; - - if (ISSET(uintp, EXUART_UINTP_RXD)) { - p = sc->sc_ibufp; - - while (bus_space_read_4(iot, ioh, EXUART_UFSTAT) & - (EXUART_UFSTAT_RX_FIFO_CNT_MASK|EXUART_UFSTAT_RX_FIFO_FULL)) { - c = bus_space_read_1(iot, ioh, EXUART_URXH); - if (p >= sc->sc_ibufend) { - sc->sc_floods++; - if (sc->sc_errors++ == 0) - timeout_add_sec(&sc->sc_diag_tmo, 60); - } else { - *p++ = c; -#if 0 - if (p == sc->sc_ibufhigh && - ISSET(tp->t_cflag, CRTSCTS)) { - /* XXX */ - } -#endif - } - } - - sc->sc_ibufp = p; - - softintr_schedule(sc->sc_si); - - bus_space_write_4(iot, ioh, EXUART_UINTP, EXUART_UINTP_RXD); - } - - if (ISSET(uintp, EXUART_UINTP_TXD) && ISSET(tp->t_state, TS_BUSY)) { - CLR(tp->t_state, TS_BUSY | TS_FLUSH); - if (sc->sc_halt > 0) - wakeup(&tp->t_outq); - (*linesw[tp->t_line].l_start)(tp); - bus_space_write_4(iot, ioh, EXUART_UINTP, EXUART_UINTP_TXD); - } - -#if 0 - if(!ISSET(bus_space_read_2(iot, ioh, EXUART_USR2), EXUART_SR2_RDR)) - return 0; - - p = sc->sc_ibufp; - - while(ISSET(bus_space_read_2(iot, ioh, EXUART_USR2), EXUART_SR2_RDR)) { - c = bus_space_read_1(iot, ioh, EXUART_URXH); - if (p >= sc->sc_ibufend) { - sc->sc_floods++; - if (sc->sc_errors++ == 0) - timeout_add_sec(&sc->sc_diag_tmo, 60); - } else { - *p++ = c; - if (p == sc->sc_ibufhigh && ISSET(tp->t_cflag, CRTSCTS)) - /* XXX */ - //CLR(sc->sc_ucr3, EXUART_CR3_DSR); - //bus_space_write_2(iot, ioh, EXUART_UCR3, - // sc->sc_ucr3); - - } - /* XXX - msr stuff ? */ - } - sc->sc_ibufp = p; - - softintr_schedule(sc->sc_si); -#endif - - return 1; -} - -int -exuart_param(struct tty *tp, struct termios *t) -{ - struct exuart_softc *sc = exuart_cd.cd_devs[DEVUNIT(tp->t_dev)]; - bus_space_tag_t iot = sc->sc_iot; - bus_space_handle_t ioh = sc->sc_ioh; - int ospeed = t->c_ospeed; - int error; - tcflag_t oldcflag; - - - if (t->c_ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) - return EINVAL; - - switch (ISSET(t->c_cflag, CSIZE)) { - case CS5: - CLR(sc->sc_ulcon, EXUART_ULCON_WORD_MASK); - SET(sc->sc_ulcon, EXUART_ULCON_WORD_FIVE); - break; - case CS6: - CLR(sc->sc_ulcon, EXUART_ULCON_WORD_MASK); - SET(sc->sc_ulcon, EXUART_ULCON_WORD_SIX); - break; - case CS7: - CLR(sc->sc_ulcon, EXUART_ULCON_WORD_MASK); - SET(sc->sc_ulcon, EXUART_ULCON_WORD_SEVEN); - break; - case CS8: - CLR(sc->sc_ulcon, EXUART_ULCON_WORD_MASK); - SET(sc->sc_ulcon, EXUART_ULCON_WORD_EIGHT); - break; - } - - CLR(sc->sc_ulcon, EXUART_ULCON_PARITY_MASK); - if (ISSET(t->c_cflag, PARENB)) { - if (ISSET(t->c_cflag, PARODD)) - SET(sc->sc_ulcon, EXUART_ULCON_PARITY_ODD); - else - SET(sc->sc_ulcon, EXUART_ULCON_PARITY_EVEN); - } - - if (ISSET(t->c_cflag, CSTOPB)) - SET(sc->sc_ulcon, EXUART_ULCON_STOP_TWO); - else - CLR(sc->sc_ulcon, EXUART_ULCON_STOP_ONE); - - bus_space_write_4(iot, ioh, EXUART_ULCON, sc->sc_ulcon); - - if (ospeed == 0) { - /* lower dtr */ - } - - if (ospeed != 0) { - while (ISSET(tp->t_state, TS_BUSY)) { - ++sc->sc_halt; - error = ttysleep(tp, &tp->t_outq, - TTOPRI | PCATCH, "exuartprm"); - --sc->sc_halt; - if (error) { - exuart_start(tp); - return (error); - } - } - /* set speed */ - } - - /* setup fifo */ - - /* When not using CRTSCTS, RTS follows DTR. */ - /* sc->sc_dtr = MCR_DTR; */ - - - /* and copy to tty */ - tp->t_ispeed = t->c_ispeed; - tp->t_ospeed = t->c_ospeed; - oldcflag = tp->t_cflag; - tp->t_cflag = t->c_cflag; - - /* - * If DCD is off and MDMBUF is changed, ask the tty layer if we should - * stop the device. - */ - /* XXX */ - - exuart_start(tp); - - return 0; -} - -void -exuart_start(struct tty *tp) -{ - struct exuart_softc *sc = exuart_cd.cd_devs[DEVUNIT(tp->t_dev)]; - bus_space_tag_t iot = sc->sc_iot; - bus_space_handle_t ioh = sc->sc_ioh; - int s; - - s = spltty(); - if (ISSET(tp->t_state, TS_BUSY)) - goto out; - if (ISSET(tp->t_state, TS_TIMEOUT | TS_TTSTOP) || sc->sc_halt > 0) - goto stopped; -#ifdef DAMNFUCKSHIT - /* clear to send (IE the RTS pin on this shit) is not directly \ - * readable - skip check for now - */ - if (ISSET(tp->t_cflag, CRTSCTS) && !ISSET(sc->sc_msr, EXUART_CTS)) - goto stopped; -#endif - ttwakeupwr(tp); - if (tp->t_outq.c_cc == 0) - goto stopped; - SET(tp->t_state, TS_BUSY); - - { - u_char buffer[16]; - int i, n; - - n = q_to_b(&tp->t_outq, buffer, sizeof buffer); - for (i = 0; i < n; i++) - bus_space_write_1(iot, ioh, EXUART_UTXH, buffer[i]); - bzero(buffer, n); - } - - if (ISSET(sc->sc_uintm, EXUART_UINTM_TXD)) { - CLR(sc->sc_uintm, EXUART_UINTM_TXD); - bus_space_write_4(iot, ioh, EXUART_UINTM, sc->sc_uintm); - } - -out: - splx(s); - return; -stopped: - if (!ISSET(sc->sc_uintm, EXUART_UINTM_TXD)) { - SET(sc->sc_uintm, EXUART_UINTM_TXD); - bus_space_write_4(iot, ioh, EXUART_UINTM, sc->sc_uintm); - } - splx(s); -} - -void -exuart_pwroff(struct exuart_softc *sc) -{ -} - -void -exuart_diag(void *arg) -{ - struct exuart_softc *sc = arg; - int overflows, floods; - int s; - - s = spltty(); - sc->sc_errors = 0; - overflows = sc->sc_overflows; - sc->sc_overflows = 0; - floods = sc->sc_floods; - sc->sc_floods = 0; - splx(s); - log(LOG_WARNING, "%s: %d silo overflow%s, %d ibuf overflow%s\n", - sc->sc_dev.dv_xname, - overflows, overflows == 1 ? "" : "s", - floods, floods == 1 ? "" : "s"); -} - -void -exuart_raisedtr(void *arg) -{ - //struct exuart_softc *sc = arg; - - //SET(sc->sc_ucr3, EXUART_CR3_DSR); /* XXX */ - //bus_space_write_2(sc->sc_iot, sc->sc_ioh, EXUART_UCR3, sc->sc_ucr3); -} - -void -exuart_softint(void *arg) -{ - struct exuart_softc *sc = arg; - struct tty *tp; - u_int16_t *ibufp; - u_int16_t *ibufend; - int c; - int err; - int s; - - if (sc == NULL || sc->sc_ibufp == sc->sc_ibuf) - return; - - tp = sc->sc_tty; - - s = spltty(); - - ibufp = sc->sc_ibuf; - ibufend = sc->sc_ibufp; - - if (ibufp == ibufend) { - splx(s); - return; - } - - sc->sc_ibufp = sc->sc_ibuf = (ibufp == sc->sc_ibufs[0]) ? - sc->sc_ibufs[1] : sc->sc_ibufs[0]; - sc->sc_ibufhigh = sc->sc_ibuf + EXUART_IHIGHWATER; - sc->sc_ibufend = sc->sc_ibuf + EXUART_IBUFSIZE; - - if (tp == NULL || !ISSET(tp->t_state, TS_ISOPEN)) { - splx(s); - return; - } - -#if 0 - if (ISSET(tp->t_cflag, CRTSCTS) && - !ISSET(sc->sc_ucr3, EXUART_CR3_DSR)) { - /* XXX */ - SET(sc->sc_ucr3, EXUART_CR3_DSR); - bus_space_write_2(sc->sc_iot, sc->sc_ioh, EXUART_UCR3, - sc->sc_ucr3); - } -#endif - - splx(s); - - while (ibufp < ibufend) { - c = *ibufp++; -#if 0 - if (ISSET(c, EXUART_UERSTAT_OVERRUN)) { - sc->sc_overflows++; - if (sc->sc_errors++ == 0) - timeout_add_sec(&sc->sc_diag_tmo, 60); - } -#endif - err = 0; -#if 0 - if (ISSET(c, EXUART_UERSTAT_PARITY)) - err |= TTY_PE; - if (ISSET(c, EXUART_UERSTAT_FRAME)) - err |= TTY_FE; -#endif - c = (c & 0xff) | err; - (*linesw[tp->t_line].l_rint)(c, tp); - } -} - -int -exuartopen(dev_t dev, int flag, int mode, struct proc *p) -{ - int unit = DEVUNIT(dev); - struct exuart_softc *sc; - bus_space_tag_t iot; - bus_space_handle_t ioh; - struct tty *tp; - int s; - int error = 0; - - if (unit >= exuart_cd.cd_ndevs) - return ENXIO; - sc = exuart_cd.cd_devs[unit]; - if (sc == NULL) - return ENXIO; - - s = spltty(); - if (sc->sc_tty == NULL) - tp = sc->sc_tty = ttymalloc(0); - else - tp = sc->sc_tty; - splx(s); - - tp->t_oproc = exuart_start; - tp->t_param = exuart_param; - tp->t_dev = dev; - if (!ISSET(tp->t_state, TS_ISOPEN)) { - SET(tp->t_state, TS_WOPEN); - ttychars(tp); - tp->t_iflag = TTYDEF_IFLAG; - tp->t_oflag = TTYDEF_OFLAG; - - if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE)) - tp->t_cflag = exuartconscflag; - else - tp->t_cflag = TTYDEF_CFLAG; - if (ISSET(sc->sc_swflags, COM_SW_CLOCAL)) - SET(tp->t_cflag, CLOCAL); - if (ISSET(sc->sc_swflags, COM_SW_CRTSCTS)) - SET(tp->t_cflag, CRTSCTS); - if (ISSET(sc->sc_swflags, COM_SW_MDMBUF)) - SET(tp->t_cflag, MDMBUF); - tp->t_lflag = TTYDEF_LFLAG; - tp->t_ispeed = tp->t_ospeed = exuartdefaultrate; - - s = spltty(); - - sc->sc_initialize = 1; - exuart_param(tp, &tp->t_termios); - ttsetwater(tp); - - sc->sc_ibufp = sc->sc_ibuf = sc->sc_ibufs[0]; - sc->sc_ibufhigh = sc->sc_ibuf + EXUART_IHIGHWATER; - sc->sc_ibufend = sc->sc_ibuf + EXUART_IBUFSIZE; - - iot = sc->sc_iot; - ioh = sc->sc_ioh; - - sc->sc_ulcon = bus_space_read_4(iot, ioh, EXUART_ULCON); - sc->sc_ucon = bus_space_read_4(iot, ioh, EXUART_UCON); - sc->sc_ufcon = bus_space_read_4(iot, ioh, EXUART_UFCON); - sc->sc_umcon = bus_space_read_4(iot, ioh, EXUART_UMCON); - - sc->sc_uintm = bus_space_read_4(iot, ioh, EXUART_UINTM); - CLR(sc->sc_uintm, EXUART_UINTM_RXD); - bus_space_write_4(iot, ioh, EXUART_UINTM, sc->sc_uintm); - -#if 0 - /* interrupt after one char on tx/rx */ - /* reference frequency divider: 1 */ - bus_space_write_2(iot, ioh, EXUART_UFCR, - 1 << EXUART_FCR_TXTL_SH | - 5 << EXUART_FCR_RFDIV_SH | - 1 << EXUART_FCR_RXTL_SH); - - bus_space_write_2(iot, ioh, EXUART_UBIR, - (exuartdefaultrate / 100) - 1); - - /* formula: clk / (rfdiv * 1600) */ - bus_space_write_2(iot, ioh, EXUART_UBMR, - (exccm_get_uartclk() * 1000) / 1600); - - SET(sc->sc_ucr1, EXUART_CR1_EN|EXUART_CR1_RRDYEN); - SET(sc->sc_ucr2, EXUART_CR2_TXEN|EXUART_CR2_RXEN); - bus_space_write_2(iot, ioh, EXUART_UCR1, sc->sc_ucr1); - bus_space_write_2(iot, ioh, EXUART_UCR2, sc->sc_ucr2); - - /* sc->sc_mcr = MCR_DTR | MCR_RTS; XXX */ - SET(sc->sc_ucr3, EXUART_CR3_DSR); /* XXX */ - bus_space_write_2(iot, ioh, EXUART_UCR3, sc->sc_ucr3); -#endif - - SET(tp->t_state, TS_CARR_ON); /* XXX */ - - - } else if (ISSET(tp->t_state, TS_XCLUDE) && suser(p) != 0) - return EBUSY; - else - s = spltty(); - - if (DEVCUA(dev)) { - if (ISSET(tp->t_state, TS_ISOPEN)) { - splx(s); - return EBUSY; - } - sc->sc_cua = 1; - } else { - /* tty (not cua) device; wait for carrier if necessary */ - if (ISSET(flag, O_NONBLOCK)) { - if (sc->sc_cua) { - /* Opening TTY non-blocking... but the CUA is busy */ - splx(s); - return EBUSY; - } - } else { - while (sc->sc_cua || - (!ISSET(tp->t_cflag, CLOCAL) && - !ISSET(tp->t_state, TS_CARR_ON))) { - SET(tp->t_state, TS_WOPEN); - error = ttysleep(tp, &tp->t_rawq, - TTIPRI | PCATCH, ttopen); - /* - * If TS_WOPEN has been reset, that means the - * cua device has been closed. We don't want - * to fail in that case, - * so just go around again. - */ - if (error && ISSET(tp->t_state, TS_WOPEN)) { - CLR(tp->t_state, TS_WOPEN); - if (!sc->sc_cua && !ISSET(tp->t_state, - TS_ISOPEN)) - exuart_pwroff(sc); - splx(s); - return error; - } - } - } - } - splx(s); - - return (*linesw[tp->t_line].l_open)(dev,tp,p); -} - -int -exuartclose(dev_t dev, int flag, int mode, struct proc *p) -{ - int unit = DEVUNIT(dev); - struct exuart_softc *sc = exuart_cd.cd_devs[unit]; - //bus_space_tag_t iot = sc->sc_iot; - //bus_space_handle_t ioh = sc->sc_ioh; - struct tty *tp = sc->sc_tty; - int s; - - /* XXX This is for cons.c. */ - if (!ISSET(tp->t_state, TS_ISOPEN)) - return 0; - - (*linesw[tp->t_line].l_close)(tp, flag, p); - s = spltty(); - if (ISSET(tp->t_state, TS_WOPEN)) { - /* tty device is waiting for carrier; drop dtr then re-raise */ - //CLR(sc->sc_ucr3, EXUART_CR3_DSR); - //bus_space_write_2(iot, ioh, EXUART_UCR3, sc->sc_ucr3); - timeout_add_sec(&sc->sc_dtr_tmo, 2); - } else { - /* no one else waiting; turn off the uart */ - exuart_pwroff(sc); - } - CLR(tp->t_state, TS_BUSY | TS_FLUSH); - sc->sc_cua = 0; - splx(s); - ttyclose(tp); - - return 0; -} - -int -exuartread(dev_t dev, struct uio *uio, int flag) -{ - struct tty *tty; - - tty = exuarttty(dev); - if (tty == NULL) - return ENODEV; - - return((*linesw[tty->t_line].l_read)(tty, uio, flag)); -} - -int -exuartwrite(dev_t dev, struct uio *uio, int flag) -{ - struct tty *tty; - - tty = exuarttty(dev); - if (tty == NULL) - return ENODEV; - - return((*linesw[tty->t_line].l_write)(tty, uio, flag)); -} - -int -exuartioctl( dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) -{ - struct exuart_softc *sc; - struct tty *tp; - int error; - - sc = exuart_sc(dev); - if (sc == NULL) - return (ENODEV); - - tp = sc->sc_tty; - if (tp == NULL) - return (ENXIO); - - error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); - if (error >= 0) - return (error); - - error = ttioctl(tp, cmd, data, flag, p); - if (error >= 0) - return (error); - - switch(cmd) { - case TIOCSBRK: - /* */ - break; - - case TIOCCBRK: - /* */ - break; - - case TIOCSDTR: -#if 0 - (void) clmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); -#endif - break; - - case TIOCCDTR: -#if 0 - (void) clmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); -#endif - break; - - case TIOCMSET: -#if 0 - (void) clmctl(dev, *(int *) data, DMSET); -#endif - break; - - case TIOCMBIS: -#if 0 - (void) clmctl(dev, *(int *) data, DMBIS); -#endif - break; - - case TIOCMBIC: -#if 0 - (void) clmctl(dev, *(int *) data, DMBIC); -#endif - break; - - case TIOCMGET: -#if 0 - *(int *)data = clmctl(dev, 0, DMGET); -#endif - break; - - case TIOCGFLAGS: -#if 0 - *(int *)data = cl->cl_swflags; -#endif - break; - - case TIOCSFLAGS: - error = suser(p); - if (error != 0) - return(EPERM); - -#if 0 - cl->cl_swflags = *(int *)data; - cl->cl_swflags &= /* only allow valid flags */ - (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); -#endif - break; - default: - return (ENOTTY); - } - - return 0; -} - -int -exuartstop(struct tty *tp, int flag) -{ - return 0; -} - -struct tty * -exuarttty(dev_t dev) -{ - int unit; - struct exuart_softc *sc; - unit = DEVUNIT(dev); - if (unit >= exuart_cd.cd_ndevs) - return NULL; - sc = (struct exuart_softc *)exuart_cd.cd_devs[unit]; - if (sc == NULL) - return NULL; - return sc->sc_tty; -} - -struct exuart_softc * -exuart_sc(dev_t dev) -{ - int unit; - struct exuart_softc *sc; - unit = DEVUNIT(dev); - if (unit >= exuart_cd.cd_ndevs) - return NULL; - sc = (struct exuart_softc *)exuart_cd.cd_devs[unit]; - return sc; -} - - -/* serial console */ -void -exuartcnprobe(struct consdev *cp) -{ - cp->cn_dev = makedev(12 /* XXX */, 0); - cp->cn_pri = CN_MIDPRI; -} - -void -exuartcninit(struct consdev *cp) -{ -} - -int -exuartcnattach(bus_space_tag_t iot, bus_addr_t iobase, int rate, tcflag_t cflag) -{ - static struct consdev exuartcons = { - NULL, NULL, exuartcngetc, exuartcnputc, exuartcnpollc, NULL, - NODEV, CN_MIDPRI - }; - - if (bus_space_map(iot, iobase, 0x100, 0, &exuartconsioh)) - return ENOMEM; - - cn_tab = &exuartcons; - cn_tab->cn_dev = makedev(12 /* XXX */, 0); - cdevsw[12] = exuartdev; /* KLUDGE */ - - exuartconsiot = iot; - exuartconsaddr = iobase; - exuartconscflag = cflag; - - return 0; -} - -int -exuartcngetc(dev_t dev) -{ - int c; - int s; - s = splhigh(); - while((bus_space_read_4(exuartconsiot, exuartconsioh, EXUART_UTRSTAT) & - EXUART_UTRSTAT_RXBREADY) == 0 && - (bus_space_read_4(exuartconsiot, exuartconsioh, EXUART_UFSTAT) & - (EXUART_UFSTAT_RX_FIFO_CNT_MASK|EXUART_UFSTAT_RX_FIFO_FULL)) == 0) - ; - c = bus_space_read_1(exuartconsiot, exuartconsioh, EXUART_URXH); - splx(s); - return c; -} - -void -exuartcnputc(dev_t dev, int c) -{ - int s; - s = splhigh(); - while (bus_space_read_4(exuartconsiot, exuartconsioh, EXUART_UFSTAT) & - EXUART_UFSTAT_TX_FIFO_FULL) - ; - bus_space_write_1(exuartconsiot, exuartconsioh, EXUART_UTXH, c); - splx(s); -} - -void -exuartcnpollc(dev_t dev, int on) -{ -} |