diff options
Diffstat (limited to 'sys/arch/sparc64/dev/z8530kbd.c')
| -rw-r--r-- | sys/arch/sparc64/dev/z8530kbd.c | 1634 |
1 files changed, 1634 insertions, 0 deletions
diff --git a/sys/arch/sparc64/dev/z8530kbd.c b/sys/arch/sparc64/dev/z8530kbd.c new file mode 100644 index 00000000000..8d4f3370088 --- /dev/null +++ b/sys/arch/sparc64/dev/z8530kbd.c @@ -0,0 +1,1634 @@ +/* $OpenBSD: z8530kbd.c,v 1.1 2002/01/15 22:00:12 jason Exp $ */ +/* $NetBSD: z8530tty.c,v 1.77 2001/05/30 15:24:24 lukem Exp $ */ + +/*- + * Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998, 1999 + * Charles M. Hannum. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Charles M. Hannum. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Copyright (c) 1994 Gordon W. Ross + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This software was developed by the Computer Systems Engineering group + * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and + * contributed to Berkeley. + * + * All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Lawrence Berkeley Laboratory. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)zs.c 8.1 (Berkeley) 7/19/93 + */ + +/* + * Zilog Z8530 Dual UART driver (tty interface) + * + * This is the "slave" driver that will be attached to + * the "zsc" driver for plain "tty" async. serial lines. + * + * Credits, history: + * + * The original version of this code was the sparc/dev/zs.c driver + * as distributed with the Berkeley 4.4 Lite release. Since then, + * Gordon Ross reorganized the code into the current parent/child + * driver scheme, separating the Sun keyboard and mouse support + * into independent child drivers. + * + * RTS/CTS flow-control support was a collaboration of: + * Gordon Ross <gwr@netbsd.org>, + * Bill Studenmund <wrstuden@loki.stanford.edu> + * Ian Dall <Ian.Dall@dsto.defence.gov.au> + * + * The driver was massively overhauled in November 1997 by Charles Hannum, + * fixing *many* bugs, and substantially improving performance. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/proc.h> +#include <sys/device.h> +#include <sys/conf.h> +#include <sys/file.h> +#include <sys/ioctl.h> +#include <sys/malloc.h> +#include <sys/tty.h> +#include <sys/time.h> +#include <sys/kernel.h> +#include <sys/syslog.h> + +#include <dev/wscons/wsconsio.h> +#include <dev/wscons/wskbdvar.h> +#include <dev/wscons/wsksymdef.h> +#include <dev/wscons/wsksymvar.h> + +#include <sparc64/dev/z8530reg.h> +#include <machine/z8530var.h> + +#include <dev/cons.h> + +/* + * How many input characters we can buffer. + * The port-specific var.h may override this. + * Note: must be a power of two! + */ +#ifndef ZSKBD_RING_SIZE +#define ZSKBD_RING_SIZE 2048 +#endif + +struct cfdriver zskbd_cd = { + NULL, "zskbd", DV_TTY +}; + +/* + * Make this an option variable one can patch. + * But be warned: this must be a power of 2! + */ +u_int zskbd_rbuf_size = ZSKBD_RING_SIZE; + +/* Stop input when 3/4 of the ring is full; restart when only 1/4 is full. */ +u_int zskbd_rbuf_hiwat = (ZSKBD_RING_SIZE * 1) / 4; +u_int zskbd_rbuf_lowat = (ZSKBD_RING_SIZE * 3) / 4; + +struct zskbd_softc { + struct device zst_dev; /* required first: base device */ + struct tty *zst_tty; + struct zs_chanstate *zst_cs; + + struct timeout zst_diag_ch; + + u_int zst_overflows, + zst_floods, + zst_errors; + + int zst_hwflags, /* see z8530var.h */ + zst_swflags; /* TIOCFLAG_SOFTCAR, ... <ttycom.h> */ + + u_int zst_r_hiwat, + zst_r_lowat; + u_char *volatile zst_rbget, + *volatile zst_rbput; + volatile u_int zst_rbavail; + u_char *zst_rbuf, + *zst_ebuf; + + /* + * The transmit byte count and address are used for pseudo-DMA + * output in the hardware interrupt code. PDMA can be suspended + * to get pending changes done; heldtbc is used for this. It can + * also be stopped for ^S; this sets TS_TTSTOP in tp->t_state. + */ + u_char *zst_tba; /* transmit buffer address */ + u_int zst_tbc, /* transmit byte count */ + zst_heldtbc; /* held tbc while xmission stopped */ + + /* Flags to communicate with zskbd_softint() */ + volatile u_char zst_rx_flags, /* receiver blocked */ +#define RX_TTY_BLOCKED 0x01 +#define RX_TTY_OVERFLOWED 0x02 +#define RX_IBUF_BLOCKED 0x04 +#define RX_IBUF_OVERFLOWED 0x08 +#define RX_ANY_BLOCK 0x0f + zst_tx_busy, /* working on an output chunk */ + zst_tx_done, /* done with one output chunk */ + zst_tx_stopped, /* H/W level stop (lost CTS) */ + zst_st_check, /* got a status interrupt */ + zst_rx_ready; + + /* PPS signal on DCD, with or without inkernel clock disciplining */ + u_char zst_ppsmask; /* pps signal mask */ + u_char zst_ppsassert; /* pps leading edge */ + u_char zst_ppsclear; /* pps trailing edge */ + + struct device *zst_wskbddev; + int zst_leds; /* LED status */ + u_int8_t zst_kbdstate; /* keyboard state */ + int zst_layout; /* current layout */ +}; + +/* Macros to clear/set/test flags. */ +#define SET(t, f) (t) |= (f) +#define CLR(t, f) (t) &= ~(f) +#define ISSET(t, f) ((t) & (f)) + +/* Definition of the driver for autoconfig. */ +static int zskbd_match(struct device *, void *, void *); +static void zskbd_attach(struct device *, struct device *, void *); + +struct cfattach zskbd_ca = { + sizeof(struct zskbd_softc), zskbd_match, zskbd_attach +}; + +struct zsops zsops_kbd; + +static void zsstart __P((struct tty *)); +static int zsparam __P((struct tty *, struct termios *)); +static void zs_modem __P((struct zskbd_softc *, int)); +static int zshwiflow __P((struct tty *, int)); +static void zs_hwiflow __P((struct zskbd_softc *)); +static void zs_maskintr __P((struct zskbd_softc *)); + +struct zskbd_softc *zskbd_device_lookup __P((struct cfdriver *, int)); + +/* Low-level routines. */ +static void zskbd_rxint __P((struct zs_chanstate *)); +static void zskbd_stint __P((struct zs_chanstate *, int)); +static void zskbd_txint __P((struct zs_chanstate *)); +static void zskbd_softint __P((struct zs_chanstate *)); +static void zskbd_diag __P((void *)); + +void zskbd_init __P((struct zskbd_softc *)); +void zskbd_putc __P((struct zskbd_softc *, u_int8_t)); +void zskbd_raw __P((struct zskbd_softc *, u_int8_t)); + +/* wskbd glue */ +int zskbd_enable __P((void *, int)); +void zskbd_set_leds __P((void *, int)); +int zskbd_get_leds __P((void *)); +int zskbd_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); +void zskbd_cngetc __P((void *, u_int *, int *)); +void zskbd_cnpollc __P((void *, int)); + +struct wskbd_accessops zskbd_accessops = { + zskbd_enable, + zskbd_set_leds, + zskbd_ioctl +}; + +struct wskbd_consops zskbd_consops = { + zskbd_cngetc, + zskbd_cnpollc +}; + +#define KC(n) KS_KEYCODE(n) +const keysym_t zskbd_keydesc_us[] = { + KC(0x02), KS_Cmd_BrightnessDown, + KC(0x04), KS_Cmd_BrightnessUp, + KC(0x05), KS_f1, + KC(0x06), KS_f2, + KC(0x07), KS_f10, + KC(0x08), KS_f3, + KC(0x09), KS_f11, + KC(0x0a), KS_f4, + KC(0x0b), KS_f12, + KC(0x0c), KS_f5, + KC(0x0d), KS_Alt_R, + KC(0x0e), KS_f6, + KC(0x10), KS_f7, + KC(0x11), KS_f8, + KC(0x12), KS_f9, + KC(0x13), KS_Alt_L, + KC(0x14), KS_Up, + KC(0x15), KS_Pause, + KC(0x16), KS_Print_Screen, + KC(0x18), KS_Left, + KC(0x1b), KS_Down, + KC(0x1c), KS_Right, + KC(0x1d), KS_Cmd_Debugger, KS_Escape, + KC(0x1e), KS_1, KS_exclam, + KC(0x1f), KS_2, KS_at, + KC(0x20), KS_3, KS_numbersign, + KC(0x21), KS_4, KS_dollar, + KC(0x22), KS_5, KS_percent, + KC(0x23), KS_6, KS_asciicircum, + KC(0x24), KS_7, KS_ampersand, + KC(0x25), KS_8, KS_asterisk, + KC(0x26), KS_9, KS_parenleft, + KC(0x27), KS_0, KS_parenright, + KC(0x28), KS_minus, KS_underscore, + KC(0x29), KS_equal, KS_plus, + KC(0x2a), KS_grave, KS_asciitilde, + KC(0x2b), KS_BackSpace, + KC(0x2c), KS_Insert, + KC(0x2d), KS_KP_Equal, + KC(0x2e), KS_KP_Divide, + KC(0x2f), KS_KP_Multiply, + KC(0x32), KS_KP_Delete, + KC(0x34), KS_Home, + KC(0x35), KS_Tab, + KC(0x36), KS_q, + KC(0x37), KS_w, + KC(0x38), KS_e, + KC(0x39), KS_r, + KC(0x3a), KS_t, + KC(0x3b), KS_y, + KC(0x3c), KS_u, + KC(0x3d), KS_i, + KC(0x3e), KS_o, + KC(0x3f), KS_p, + KC(0x40), KS_bracketleft, KS_braceleft, + KC(0x41), KS_bracketright,KS_braceright, + KC(0x42), KS_Delete, + KC(0x43), KS_Multi_key, + KC(0x44), KS_KP_Home, KS_KP_7, + KC(0x45), KS_KP_Up, KS_KP_8, + KC(0x46), KS_KP_Prior, KS_KP_9, + KC(0x47), KS_KP_Subtract, + KC(0x4a), KS_End, + KC(0x4c), KS_Cmd1, KS_Control_L, + KC(0x4d), KS_a, + KC(0x4e), KS_s, + KC(0x4f), KS_d, + KC(0x50), KS_f, + KC(0x51), KS_g, + KC(0x52), KS_h, + KC(0x53), KS_j, + KC(0x54), KS_k, + KC(0x55), KS_l, + KC(0x56), KS_semicolon, KS_colon, + KC(0x57), KS_apostrophe, KS_quotedbl, + KC(0x58), KS_backslash, KS_bar, + KC(0x59), KS_Return, + KC(0x5a), KS_KP_Enter, + KC(0x5b), KS_KP_Left, KS_KP_4, + KC(0x5c), KS_KP_Begin, KS_KP_5, + KC(0x5d), KS_KP_Right, KS_KP_6, + KC(0x5e), KS_KP_Insert, KS_KP_0, + KC(0x5f), KS_Find, + KC(0x60), KS_Prior, + KC(0x62), KS_Num_Lock, + KC(0x63), KS_Shift_L, + KC(0x64), KS_z, + KC(0x65), KS_x, + KC(0x66), KS_c, + KC(0x67), KS_v, + KC(0x68), KS_b, + KC(0x69), KS_n, + KC(0x6a), KS_m, + KC(0x6b), KS_comma, KS_less, + KC(0x6c), KS_period, KS_greater, + KC(0x6d), KS_slash, KS_question, + KC(0x6e), KS_Shift_R, + KC(0x6f), KS_Linefeed, + KC(0x70), KS_KP_End, KS_KP_1, + KC(0x71), KS_KP_Down, KS_KP_2, + KC(0x72), KS_KP_Next, KS_KP_3, + KC(0x76), KS_Help, + KC(0x77), KS_Caps_Lock, + KC(0x78), KS_Meta_L, + KC(0x79), KS_space, + KC(0x7a), KS_Meta_R, + KC(0x7b), KS_Next, + KC(0x7d), KS_KP_Add, +}; + +#define KBD_MAP(name, base, map) \ + { name, base, sizeof(map)/sizeof(keysym_t), map } + +const struct wscons_keydesc zskbd_keydesctab[] = { + KBD_MAP(KB_US, 0, zskbd_keydesc_us), + {0, 0, 0, 0}, +}; + +struct wskbd_mapdata zskbd_keymapdata = { + zskbd_keydesctab +}; + +#define ZSKBDUNIT(x) (minor(x) & 0x7ffff) + +struct zskbd_softc * +zskbd_device_lookup(cf, unit) + struct cfdriver *cf; + int unit; +{ + return (struct zskbd_softc *)device_lookup(cf, unit); +} + +/* + * zskbd_match: how is this zs channel configured? + */ +int +zskbd_match(parent, vcf, aux) + struct device *parent; + void *vcf; + void *aux; +{ + struct cfdata *cf = vcf; + struct zsc_attach_args *args = aux; + int ret; + + /* If we're not looking for a keyboard, just exit */ + if (strcmp(args->type, "keyboard") != 0) + return (0); + + ret = 10; + + /* Exact match is better than wildcard. */ + if (cf->cf_loc[ZSCCF_CHANNEL] == args->channel) + ret += 2; + + /* This driver accepts wildcard. */ + if (cf->cf_loc[ZSCCF_CHANNEL] == ZSCCF_CHANNEL_DEFAULT) + ret += 1; + + return (ret); +} + +void +zskbd_attach(parent, self, aux) + struct device *parent, *self; + void *aux; + +{ + struct zsc_softc *zsc = (void *) parent; + struct zskbd_softc *zst = (void *) self; + struct cfdata *cf = self->dv_cfdata; + struct zsc_attach_args *args = aux; + struct wskbddev_attach_args a; + struct zs_chanstate *cs; + struct tty *tp; + int channel, s, tty_unit, console = 0; + dev_t dev; + + timeout_set(&zst->zst_diag_ch, zskbd_diag, zst); + + tty_unit = zst->zst_dev.dv_unit; + channel = args->channel; + cs = zsc->zsc_cs[channel]; + cs->cs_private = zst; + cs->cs_ops = &zsops_kbd; + + zst->zst_cs = cs; + zst->zst_swflags = cf->cf_flags; /* softcar, etc. */ + zst->zst_hwflags = args->hwflags; + dev = makedev(zs_major, tty_unit); + + if (zst->zst_swflags) + printf(" flags 0x%x", zst->zst_swflags); + + /* + * Check whether we serve as a console device. + * XXX - split console input/output channels aren't + * supported yet on /dev/console + */ + if ((zst->zst_hwflags & ZS_HWFLAG_CONSOLE_INPUT) != 0) { + if ((args->hwflags & ZS_HWFLAG_USE_CONSDEV) != 0) { + args->consdev->cn_dev = dev; + cn_tab->cn_pollc = wskbd_cnpollc; + cn_tab->cn_getc = wskbd_cngetc; + } + cn_tab->cn_dev = dev; + console = 1; + } + + printf("\n"); + + tp = ttymalloc(); + tp->t_dev = dev; + tp->t_oproc = zsstart; + tp->t_param = zsparam; + tp->t_hwiflow = zshwiflow; + tty_attach(tp); + + zst->zst_tty = tp; + zst->zst_rbuf = malloc(zskbd_rbuf_size << 1, M_DEVBUF, M_WAITOK); + zst->zst_ebuf = zst->zst_rbuf + (zskbd_rbuf_size << 1); + /* Disable the high water mark. */ + zst->zst_r_hiwat = 0; + zst->zst_r_lowat = 0; + zst->zst_rbget = zst->zst_rbput = zst->zst_rbuf; + zst->zst_rbavail = zskbd_rbuf_size; + + /* if there are no enable/disable functions, assume the device + is always enabled */ + if (!cs->enable) + cs->enabled = 1; + + /* + * Hardware init + */ + if (ISSET(zst->zst_hwflags, ZS_HWFLAG_CONSOLE)) { + /* Call zsparam similar to open. */ + struct termios t; + + /* Wait a while for previous console output to complete */ + DELAY(10000); + + /* Setup the "new" parameters in t. */ + t.c_ispeed = 0; + t.c_ospeed = 1200; + t.c_cflag = CS8 | CLOCAL; + + s = splzs(); + + /* + * Turn on receiver and status interrupts. + * We defer the actual write of the register to zsparam(), + * but we must make sure status interrupts are turned on by + * the time zsparam() reads the initial rr0 state. + */ + SET(cs->cs_preg[1], ZSWR1_RIE | ZSWR1_SIE); + + splx(s); + + /* Make sure zsparam will see changes. */ + tp->t_ospeed = 0; + (void) zsparam(tp, &t); + + s = splzs(); + + /* Make sure DTR is on now. */ + zs_modem(zst, 1); + + splx(s); + } else if (!ISSET(zst->zst_hwflags, ZS_HWFLAG_NORESET)) { + /* Not the console; may need reset. */ + int reset; + + reset = (channel == 0) ? ZSWR9_A_RESET : ZSWR9_B_RESET; + + s = splzs(); + + zs_write_reg(cs, 9, reset); + + /* Will raise DTR in open. */ + zs_modem(zst, 0); + + splx(s); + } + + zskbd_init(zst); + + a.console = console; + a.keymap = &zskbd_keymapdata; + a.accessops = &zskbd_accessops; + a.accesscookie = zst; + + if (console) + wskbd_cnattach(&zskbd_consops, zst, &zskbd_keymapdata); + + zst->zst_wskbddev = config_found(self, &a, wskbddevprint); +} + +/* keyboard commands (host->kbd) */ +#define SKBD_CMD_RESET 0x01 +#define SKBD_CMD_BELLON 0x02 +#define SKBD_CMD_BELLOFF 0x03 +#define SKBD_CMD_CLICKON 0x0a +#define SKBD_CMD_CLICKOFF 0x0b +#define SKBD_CMD_SETLED 0x0e +#define SKBD_CMD_LAYOUT 0x0f + +/* keyboard responses (kbd->host) */ +#define SKBD_RSP_RESET_OK 0x04 /* normal reset status */ +#define SKBD_RSP_IDLE 0x7f /* no keys down */ +#define SKBD_RSP_LAYOUT 0xfe /* layout follows */ +#define SKBD_RSP_RESET 0xff /* reset status follows */ + +#define SKBD_STATE_RESET 0 +#define SKBD_STATE_LAYOUT 1 +#define SKBD_STATE_GETKEY 2 + +void +zskbd_init(zst) + struct zskbd_softc *zst; +{ + struct zs_chanstate *cs = zst->zst_cs; + int s, tries; + u_int8_t v3, v4, v5, rr0; + + /* setup for 1200n81 */ + if (zs_set_speed(cs, 1200)) { /* set 1200bps */ + printf(": failed to set baudrate\n"); + return; + } + if (zs_set_modes(cs, CS8 | CLOCAL)) { + printf(": failed to set modes\n"); + return; + } + + s = splzs(); + + zs_maskintr(zst); + + v3 = cs->cs_preg[3]; /* set 8 bit chars */ + v5 = cs->cs_preg[5]; + CLR(v3, ZSWR3_RXSIZE); + CLR(v5, ZSWR5_TXSIZE); + SET(v3, ZSWR3_RX_8); + SET(v5, ZSWR5_TX_8); + cs->cs_preg[3] = v3; + cs->cs_preg[5] = v5; + + v4 = cs->cs_preg[4]; /* no parity 1 stop */ + CLR(v4, ZSWR4_SBMASK | ZSWR4_PARMASK); + SET(v4, ZSWR4_ONESB | ZSWR4_EVENP); + cs->cs_preg[4] = v4; + + if (!cs->cs_heldchange) { + if (zst->zst_tx_busy) { + zst->zst_heldtbc = zst->zst_tbc; + zst->zst_tbc = 0; + cs->cs_heldchange = 1; + } else + zs_loadchannelregs(cs); + } + + /* + * Hardware flow control is disabled, turn off the buffer water + * marks and unblock any soft flow control state. Otherwise, enable + * the water marks. + */ + zst->zst_r_hiwat = 0; + zst->zst_r_lowat = 0; + if (ISSET(zst->zst_rx_flags, RX_TTY_OVERFLOWED)) { + CLR(zst->zst_rx_flags, RX_TTY_OVERFLOWED); + zst->zst_rx_ready = 1; + cs->cs_softreq = 1; + } + if (ISSET(zst->zst_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED)) { + CLR(zst->zst_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED); + zs_hwiflow(zst); + } + + /* + * Force a recheck of the hardware carrier and flow control status, + * since we may have changed which bits we're looking at. + */ + zskbd_stint(cs, 1); + + splx(s); + + /* + * Hardware flow control is disabled, unblock any hard flow control + * state. + */ + if (zst->zst_tx_stopped) { + zst->zst_tx_stopped = 0; + zsstart(zst->zst_tty); + } + + zskbd_softint(cs); + + /* Ok, start the reset sequence... */ + + s = splhigh(); + zst->zst_leds = 0; + zst->zst_layout = -1; + + for (tries = 5; tries != 0; tries--) { + int ltries; + + zskbd_putc(zst, SKBD_CMD_RESET); + + ltries = 1000; + while (--ltries > 0) { + rr0 = *cs->cs_reg_csr; + if (rr0 & ZSRR0_RX_READY) + break; + DELAY(1000); + } + if (ltries == 0) + continue; + zskbd_raw(zst, *cs->cs_reg_data); + if (zst->zst_kbdstate != SKBD_STATE_RESET) + continue; + + ltries = 1000; + while (--ltries > 0) { + rr0 = *cs->cs_reg_csr; + if (rr0 & ZSRR0_RX_READY) + break; + DELAY(1000); + } + if (ltries == 0) + continue; + zskbd_raw(zst, *cs->cs_reg_data); + if (zst->zst_kbdstate != SKBD_STATE_GETKEY) + continue; + + zskbd_putc(zst, SKBD_CMD_LAYOUT); + + ltries = 1000; + while (--ltries > 0) { + rr0 = *cs->cs_reg_csr; + if (rr0 & ZSRR0_RX_READY) + break; + DELAY(1000); + } + if (ltries == 0) + continue; + zskbd_raw(zst, *cs->cs_reg_data); + if (zst->zst_kbdstate != SKBD_STATE_LAYOUT) + continue; + ltries = 1000; + while (--ltries > 0) { + rr0 = *cs->cs_reg_csr; + if (rr0 & ZSRR0_RX_READY) + break; + DELAY(1000); + } + if (ltries == 0) + continue; + zskbd_raw(zst, *cs->cs_reg_data); + if (zst->zst_kbdstate == SKBD_STATE_GETKEY) + break; + } + if (tries == 0) + printf(":reset timeout\n"); + else + printf("reset ok, layout %d\n", zst->zst_layout); + splx(s); +} + +void +zskbd_raw(zst, c) + struct zskbd_softc *zst; + u_int8_t c; +{ + int claimed = 0; + + printf("raw(state %d, code %x)\n", zst->zst_kbdstate, c); + switch (c) { + case SKBD_RSP_RESET: + zst->zst_kbdstate = SKBD_STATE_RESET; + claimed = 1; + break; + case SKBD_RSP_LAYOUT: + zst->zst_kbdstate = SKBD_STATE_LAYOUT; + claimed = 1; + break; + case SKBD_RSP_IDLE: + zst->zst_kbdstate = SKBD_STATE_GETKEY; + claimed = 1; + } + + if (claimed) { + printf("out state: %d\n", zst->zst_kbdstate); + return; + } + + switch (zst->zst_kbdstate) { + case SKBD_STATE_RESET: + zst->zst_kbdstate = SKBD_STATE_GETKEY; + if (c != SKBD_RSP_RESET_OK) + printf("%s: reset1 invalid code 0x%02x\n", + zst->zst_dev.dv_xname, c); + break; + case SKBD_STATE_LAYOUT: + zst->zst_kbdstate = SKBD_STATE_GETKEY; + printf("layout: %02x\n", c); + zst->zst_layout = c; + break; + case SKBD_STATE_GETKEY: + printf("KEY(%02x)\n", c); + break; + } + printf("out state: %d\n", zst->zst_kbdstate); +} + +void +zskbd_putc(zst, c) + struct zskbd_softc *zst; + u_int8_t c; +{ + u_int8_t rr0; + int s; + + s = splhigh(); + do { + rr0 = *zst->zst_cs->cs_reg_csr; + } while ((rr0 & ZSRR0_TX_READY) == 0); + *zst->zst_cs->cs_reg_data = c; + delay(2); + splx(s); +} + +/* + * Start or restart transmission. + */ +static void +zsstart(tp) + struct tty *tp; +{ + struct zskbd_softc *zst = zskbd_device_lookup(&zskbd_cd, ZSKBDUNIT(tp->t_dev)); + struct zs_chanstate *cs = zst->zst_cs; + int s; + + s = spltty(); + if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) + goto out; + if (zst->zst_tx_stopped) + goto out; + + if (tp->t_outq.c_cc <= tp->t_lowat) { + if (ISSET(tp->t_state, TS_ASLEEP)) { + CLR(tp->t_state, TS_ASLEEP); + wakeup((caddr_t)&tp->t_outq); + } + selwakeup(&tp->t_wsel); + if (tp->t_outq.c_cc == 0) + goto out; + } + + /* Grab the first contiguous region of buffer space. */ + { + u_char *tba; + int tbc; + + tba = tp->t_outq.c_cf; + tbc = ndqb(&tp->t_outq, 0); + + (void) splzs(); + + zst->zst_tba = tba; + zst->zst_tbc = tbc; + } + + SET(tp->t_state, TS_BUSY); + zst->zst_tx_busy = 1; + + /* Enable transmit completion interrupts if necessary. */ + if (!ISSET(cs->cs_preg[1], ZSWR1_TIE)) { + SET(cs->cs_preg[1], ZSWR1_TIE); + cs->cs_creg[1] = cs->cs_preg[1]; + zs_write_reg(cs, 1, cs->cs_creg[1]); + } + + /* Output the first character of the contiguous buffer. */ + { + zs_write_data(cs, *zst->zst_tba); + zst->zst_tbc--; + zst->zst_tba++; + } +out: + splx(s); + return; +} + +/* + * Set ZS tty parameters from termios. + * XXX - Should just copy the whole termios after + * making sure all the changes could be done. + */ +static int +zsparam(tp, t) + struct tty *tp; + struct termios *t; +{ + struct zskbd_softc *zst = zskbd_device_lookup(&zskbd_cd, ZSKBDUNIT(tp->t_dev)); + struct zs_chanstate *cs = zst->zst_cs; + int ospeed, cflag; + u_char tmp3, tmp4, tmp5; + int s, error; + + ospeed = t->c_ospeed; + cflag = t->c_cflag; + + /* Check requested parameters. */ + if (ospeed < 0) + return (EINVAL); + if (t->c_ispeed && t->c_ispeed != ospeed) + return (EINVAL); + + /* + * For the console, always force CLOCAL and !HUPCL, so that the port + * is always active. + */ + if (ISSET(zst->zst_swflags, TIOCFLAG_SOFTCAR) || + ISSET(zst->zst_hwflags, ZS_HWFLAG_CONSOLE)) { + SET(cflag, CLOCAL); + CLR(cflag, HUPCL); + } + + /* + * Only whack the UART when params change. + * Some callers need to clear tp->t_ospeed + * to make sure initialization gets done. + */ + if (tp->t_ospeed == ospeed && + tp->t_cflag == cflag) + return (0); + + /* + * Call MD functions to deal with changed + * clock modes or H/W flow control modes. + * The BRG divisor is set now. (reg 12,13) + */ + error = zs_set_speed(cs, ospeed); + if (error) + return (error); + error = zs_set_modes(cs, cflag); + if (error) + return (error); + + /* + * Block interrupts so that state will not + * be altered until we are done setting it up. + * + * Initial values in cs_preg are set before + * our attach routine is called. The master + * interrupt enable is handled by zsc.c + * + */ + s = splzs(); + + /* + * Recalculate which status ints to enable. + */ + zs_maskintr(zst); + + /* Recompute character size bits. */ + tmp3 = cs->cs_preg[3]; + tmp5 = cs->cs_preg[5]; + CLR(tmp3, ZSWR3_RXSIZE); + CLR(tmp5, ZSWR5_TXSIZE); + switch (ISSET(cflag, CSIZE)) { + case CS5: + SET(tmp3, ZSWR3_RX_5); + SET(tmp5, ZSWR5_TX_5); + break; + case CS6: + SET(tmp3, ZSWR3_RX_6); + SET(tmp5, ZSWR5_TX_6); + break; + case CS7: + SET(tmp3, ZSWR3_RX_7); + SET(tmp5, ZSWR5_TX_7); + break; + case CS8: + SET(tmp3, ZSWR3_RX_8); + SET(tmp5, ZSWR5_TX_8); + break; + } + cs->cs_preg[3] = tmp3; + cs->cs_preg[5] = tmp5; + + /* + * Recompute the stop bits and parity bits. Note that + * zs_set_speed() may have set clock selection bits etc. + * in wr4, so those must preserved. + */ + tmp4 = cs->cs_preg[4]; + CLR(tmp4, ZSWR4_SBMASK | ZSWR4_PARMASK); + if (ISSET(cflag, CSTOPB)) + SET(tmp4, ZSWR4_TWOSB); + else + SET(tmp4, ZSWR4_ONESB); + if (!ISSET(cflag, PARODD)) + SET(tmp4, ZSWR4_EVENP); + if (ISSET(cflag, PARENB)) + SET(tmp4, ZSWR4_PARENB); + cs->cs_preg[4] = tmp4; + + /* And copy to tty. */ + tp->t_ispeed = 0; + tp->t_ospeed = ospeed; + tp->t_cflag = cflag; + + /* + * If nothing is being transmitted, set up new current values, + * else mark them as pending. + */ + if (!cs->cs_heldchange) { + if (zst->zst_tx_busy) { + zst->zst_heldtbc = zst->zst_tbc; + zst->zst_tbc = 0; + cs->cs_heldchange = 1; + } else + zs_loadchannelregs(cs); + } + + /* + * If hardware flow control is disabled, turn off the buffer water + * marks and unblock any soft flow control state. Otherwise, enable + * the water marks. + */ + if (!ISSET(cflag, CHWFLOW)) { + zst->zst_r_hiwat = 0; + zst->zst_r_lowat = 0; + if (ISSET(zst->zst_rx_flags, RX_TTY_OVERFLOWED)) { + CLR(zst->zst_rx_flags, RX_TTY_OVERFLOWED); + zst->zst_rx_ready = 1; + cs->cs_softreq = 1; + } + if (ISSET(zst->zst_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED)) { + CLR(zst->zst_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED); + zs_hwiflow(zst); + } + } else { + zst->zst_r_hiwat = zskbd_rbuf_hiwat; + zst->zst_r_lowat = zskbd_rbuf_lowat; + } + + /* + * Force a recheck of the hardware carrier and flow control status, + * since we may have changed which bits we're looking at. + */ + zskbd_stint(cs, 1); + + splx(s); + + /* + * If hardware flow control is disabled, unblock any hard flow control + * state. + */ + if (!ISSET(cflag, CHWFLOW)) { + if (zst->zst_tx_stopped) { + zst->zst_tx_stopped = 0; + zsstart(tp); + } + } + + zskbd_softint(cs); + + return (0); +} + +/* + * Compute interupt enable bits and set in the pending bits. Called both + * in zsparam() and when PPS (pulse per second timing) state changes. + * Must be called at splzs(). + */ +static void +zs_maskintr(zst) + struct zskbd_softc *zst; +{ + struct zs_chanstate *cs = zst->zst_cs; + int tmp15; + + cs->cs_rr0_mask = cs->cs_rr0_cts | cs->cs_rr0_dcd; + if (zst->zst_ppsmask != 0) + cs->cs_rr0_mask |= cs->cs_rr0_pps; + tmp15 = cs->cs_preg[15]; + if (ISSET(cs->cs_rr0_mask, ZSRR0_DCD)) + SET(tmp15, ZSWR15_DCD_IE); + else + CLR(tmp15, ZSWR15_DCD_IE); + if (ISSET(cs->cs_rr0_mask, ZSRR0_CTS)) + SET(tmp15, ZSWR15_CTS_IE); + else + CLR(tmp15, ZSWR15_CTS_IE); + cs->cs_preg[15] = tmp15; +} + + +/* + * Raise or lower modem control (DTR/RTS) signals. If a character is + * in transmission, the change is deferred. + */ +static void +zs_modem(zst, onoff) + struct zskbd_softc *zst; + int onoff; +{ + struct zs_chanstate *cs = zst->zst_cs; + + if (cs->cs_wr5_dtr == 0) + return; + + if (onoff) + SET(cs->cs_preg[5], cs->cs_wr5_dtr); + else + CLR(cs->cs_preg[5], cs->cs_wr5_dtr); + + if (!cs->cs_heldchange) { + if (zst->zst_tx_busy) { + zst->zst_heldtbc = zst->zst_tbc; + zst->zst_tbc = 0; + cs->cs_heldchange = 1; + } else + zs_loadchannelregs(cs); + } +} + +/* + * Try to block or unblock input using hardware flow-control. + * This is called by kern/tty.c if MDMBUF|CRTSCTS is set, and + * if this function returns non-zero, the TS_TBLOCK flag will + * be set or cleared according to the "block" arg passed. + */ +int +zshwiflow(tp, block) + struct tty *tp; + int block; +{ + struct zskbd_softc *zst = zskbd_device_lookup(&zskbd_cd, ZSKBDUNIT(tp->t_dev)); + struct zs_chanstate *cs = zst->zst_cs; + int s; + + if (cs->cs_wr5_rts == 0) + return (0); + + s = splzs(); + if (block) { + if (!ISSET(zst->zst_rx_flags, RX_TTY_BLOCKED)) { + SET(zst->zst_rx_flags, RX_TTY_BLOCKED); + zs_hwiflow(zst); + } + } else { + if (ISSET(zst->zst_rx_flags, RX_TTY_OVERFLOWED)) { + CLR(zst->zst_rx_flags, RX_TTY_OVERFLOWED); + zst->zst_rx_ready = 1; + cs->cs_softreq = 1; + } + if (ISSET(zst->zst_rx_flags, RX_TTY_BLOCKED)) { + CLR(zst->zst_rx_flags, RX_TTY_BLOCKED); + zs_hwiflow(zst); + } + } + splx(s); + return (1); +} + +/* + * Internal version of zshwiflow + * called at splzs + */ +static void +zs_hwiflow(zst) + struct zskbd_softc *zst; +{ + struct zs_chanstate *cs = zst->zst_cs; + + if (cs->cs_wr5_rts == 0) + return; + + if (ISSET(zst->zst_rx_flags, RX_ANY_BLOCK)) { + CLR(cs->cs_preg[5], cs->cs_wr5_rts); + CLR(cs->cs_creg[5], cs->cs_wr5_rts); + } else { + SET(cs->cs_preg[5], cs->cs_wr5_rts); + SET(cs->cs_creg[5], cs->cs_wr5_rts); + } + zs_write_reg(cs, 5, cs->cs_creg[5]); +} + + +/**************************************************************** + * Interface to the lower layer (zscc) + ****************************************************************/ + +#define integrate +integrate void zskbd_rxsoft __P((struct zskbd_softc *, struct tty *)); +integrate void zskbd_txsoft __P((struct zskbd_softc *, struct tty *)); +integrate void zskbd_stsoft __P((struct zskbd_softc *, struct tty *)); +/* + * receiver ready interrupt. + * called at splzs + */ +static void +zskbd_rxint(cs) + struct zs_chanstate *cs; +{ + struct zskbd_softc *zst = cs->cs_private; + u_char *put, *end; + u_int cc; + u_char rr0, rr1, c; + + end = zst->zst_ebuf; + put = zst->zst_rbput; + cc = zst->zst_rbavail; + + while (cc > 0) { + /* + * First read the status, because reading the received char + * destroys the status of this char. + */ + rr1 = zs_read_reg(cs, 1); + c = zs_read_data(cs); + + if (ISSET(rr1, ZSRR1_FE | ZSRR1_DO | ZSRR1_PE)) { + /* Clear the receive error. */ + zs_write_csr(cs, ZSWR0_RESET_ERRORS); + } + + put[0] = c; + put[1] = rr1; + put += 2; + if (put >= end) + put = zst->zst_rbuf; + cc--; + + rr0 = zs_read_csr(cs); + if (!ISSET(rr0, ZSRR0_RX_READY)) + break; + } + + /* + * Current string of incoming characters ended because + * no more data was available or we ran out of space. + * Schedule a receive event if any data was received. + * If we're out of space, turn off receive interrupts. + */ + zst->zst_rbput = put; + zst->zst_rbavail = cc; + if (!ISSET(zst->zst_rx_flags, RX_TTY_OVERFLOWED)) { + zst->zst_rx_ready = 1; + cs->cs_softreq = 1; + } + + /* + * See if we are in danger of overflowing a buffer. If + * so, use hardware flow control to ease the pressure. + */ + if (!ISSET(zst->zst_rx_flags, RX_IBUF_BLOCKED) && + cc < zst->zst_r_hiwat) { + SET(zst->zst_rx_flags, RX_IBUF_BLOCKED); + zs_hwiflow(zst); + } + + /* + * If we're out of space, disable receive interrupts + * until the queue has drained a bit. + */ + if (!cc) { + SET(zst->zst_rx_flags, RX_IBUF_OVERFLOWED); + CLR(cs->cs_preg[1], ZSWR1_RIE); + cs->cs_creg[1] = cs->cs_preg[1]; + zs_write_reg(cs, 1, cs->cs_creg[1]); + } +} + +/* + * transmitter ready interrupt. (splzs) + */ +static void +zskbd_txint(cs) + struct zs_chanstate *cs; +{ + struct zskbd_softc *zst = cs->cs_private; + + /* + * If we've delayed a parameter change, do it now, and restart + * output. + */ + if (cs->cs_heldchange) { + zs_loadchannelregs(cs); + cs->cs_heldchange = 0; + zst->zst_tbc = zst->zst_heldtbc; + zst->zst_heldtbc = 0; + } + + /* Output the next character in the buffer, if any. */ + if (zst->zst_tbc > 0) { + zs_write_data(cs, *zst->zst_tba); + zst->zst_tbc--; + zst->zst_tba++; + } else { + /* Disable transmit completion interrupts if necessary. */ + if (ISSET(cs->cs_preg[1], ZSWR1_TIE)) { + CLR(cs->cs_preg[1], ZSWR1_TIE); + cs->cs_creg[1] = cs->cs_preg[1]; + zs_write_reg(cs, 1, cs->cs_creg[1]); + } + if (zst->zst_tx_busy) { + zst->zst_tx_busy = 0; + zst->zst_tx_done = 1; + cs->cs_softreq = 1; + } + } +} + +/* + * status change interrupt. (splzs) + */ +static void +zskbd_stint(cs, force) + struct zs_chanstate *cs; + int force; +{ + struct zskbd_softc *zst = cs->cs_private; + u_char rr0, delta; + + rr0 = zs_read_csr(cs); + zs_write_csr(cs, ZSWR0_RESET_STATUS); + + /* + * Check here for console break, so that we can abort + * even when interrupts are locking up the machine. + */ + if (!force) + delta = rr0 ^ cs->cs_rr0; + else + delta = cs->cs_rr0_mask; + cs->cs_rr0 = rr0; + + if (ISSET(delta, cs->cs_rr0_mask)) { + SET(cs->cs_rr0_delta, delta); + + /* + * Stop output immediately if we lose the output + * flow control signal or carrier detect. + */ + if (ISSET(~rr0, cs->cs_rr0_mask)) { + zst->zst_tbc = 0; + zst->zst_heldtbc = 0; + } + + zst->zst_st_check = 1; + cs->cs_softreq = 1; + } +} + +void +zskbd_diag(arg) + void *arg; +{ + struct zskbd_softc *zst = arg; + int overflows, floods; + int s; + + s = splzs(); + overflows = zst->zst_overflows; + zst->zst_overflows = 0; + floods = zst->zst_floods; + zst->zst_floods = 0; + zst->zst_errors = 0; + splx(s); + + log(LOG_WARNING, "%s: %d silo overflow%s, %d ibuf flood%s\n", + zst->zst_dev.dv_xname, + overflows, overflows == 1 ? "" : "s", + floods, floods == 1 ? "" : "s"); +} + +integrate void +zskbd_rxsoft(zst, tp) + struct zskbd_softc *zst; + struct tty *tp; +{ + struct zs_chanstate *cs = zst->zst_cs; + int (*rint) __P((int c, struct tty *tp)) = linesw[tp->t_line].l_rint; + u_char *get, *end; + u_int cc, scc; + u_char rr1; + int code; + int s; + + end = zst->zst_ebuf; + get = zst->zst_rbget; + scc = cc = zskbd_rbuf_size - zst->zst_rbavail; + + if (cc == zskbd_rbuf_size) { + zst->zst_floods++; + if (zst->zst_errors++ == 0) + timeout_add(&zst->zst_diag_ch, 60 * hz); + } + + /* If not yet open, drop the entire buffer content here */ + if (!ISSET(tp->t_state, TS_ISOPEN)) { + get += cc << 1; + if (get >= end) + get -= zskbd_rbuf_size << 1; + cc = 0; + } + while (cc) { + code = get[0]; + rr1 = get[1]; + if (ISSET(rr1, ZSRR1_DO | ZSRR1_FE | ZSRR1_PE)) { + if (ISSET(rr1, ZSRR1_DO)) { + zst->zst_overflows++; + if (zst->zst_errors++ == 0) + timeout_add(&zst->zst_diag_ch, 60 * hz); + } + if (ISSET(rr1, ZSRR1_FE)) + SET(code, TTY_FE); + if (ISSET(rr1, ZSRR1_PE)) + SET(code, TTY_PE); + } + if ((*rint)(code, tp) == -1) { + /* + * The line discipline's buffer is out of space. + */ + if (!ISSET(zst->zst_rx_flags, RX_TTY_BLOCKED)) { + /* + * We're either not using flow control, or the + * line discipline didn't tell us to block for + * some reason. Either way, we have no way to + * know when there's more space available, so + * just drop the rest of the data. + */ + get += cc << 1; + if (get >= end) + get -= zskbd_rbuf_size << 1; + cc = 0; + } else { + /* + * Don't schedule any more receive processing + * until the line discipline tells us there's + * space available (through comhwiflow()). + * Leave the rest of the data in the input + * buffer. + */ + SET(zst->zst_rx_flags, RX_TTY_OVERFLOWED); + } + break; + } + get += 2; + if (get >= end) + get = zst->zst_rbuf; + cc--; + } + + if (cc != scc) { + zst->zst_rbget = get; + s = splzs(); + cc = zst->zst_rbavail += scc - cc; + /* Buffers should be ok again, release possible block. */ + if (cc >= zst->zst_r_lowat) { + if (ISSET(zst->zst_rx_flags, RX_IBUF_OVERFLOWED)) { + CLR(zst->zst_rx_flags, RX_IBUF_OVERFLOWED); + SET(cs->cs_preg[1], ZSWR1_RIE); + cs->cs_creg[1] = cs->cs_preg[1]; + zs_write_reg(cs, 1, cs->cs_creg[1]); + } + if (ISSET(zst->zst_rx_flags, RX_IBUF_BLOCKED)) { + CLR(zst->zst_rx_flags, RX_IBUF_BLOCKED); + zs_hwiflow(zst); + } + } + splx(s); + } +} + +integrate void +zskbd_txsoft(zst, tp) + struct zskbd_softc *zst; + struct tty *tp; +{ + + CLR(tp->t_state, TS_BUSY); + if (ISSET(tp->t_state, TS_FLUSH)) + CLR(tp->t_state, TS_FLUSH); + else + ndflush(&tp->t_outq, (int)(zst->zst_tba - tp->t_outq.c_cf)); + (*linesw[tp->t_line].l_start)(tp); +} + +integrate void +zskbd_stsoft(zst, tp) + struct zskbd_softc *zst; + struct tty *tp; +{ + struct zs_chanstate *cs = zst->zst_cs; + u_char rr0, delta; + int s; + + s = splzs(); + rr0 = cs->cs_rr0; + delta = cs->cs_rr0_delta; + cs->cs_rr0_delta = 0; + splx(s); + + if (ISSET(delta, cs->cs_rr0_dcd)) { + /* + * Inform the tty layer that carrier detect changed. + */ + (void) (*linesw[tp->t_line].l_modem)(tp, ISSET(rr0, ZSRR0_DCD)); + } + + if (ISSET(delta, cs->cs_rr0_cts)) { + /* Block or unblock output according to flow control. */ + if (ISSET(rr0, cs->cs_rr0_cts)) { + zst->zst_tx_stopped = 0; + (*linesw[tp->t_line].l_start)(tp); + } else { + zst->zst_tx_stopped = 1; + } + } +} + +/* + * Software interrupt. Called at zssoft + * + * The main job to be done here is to empty the input ring + * by passing its contents up to the tty layer. The ring is + * always emptied during this operation, therefore the ring + * must not be larger than the space after "high water" in + * the tty layer, or the tty layer might drop our input. + * + * Note: an "input blockage" condition is assumed to exist if + * EITHER the TS_TBLOCK flag or zst_rx_blocked flag is set. + */ +static void +zskbd_softint(cs) + struct zs_chanstate *cs; +{ + struct zskbd_softc *zst = cs->cs_private; + struct tty *tp = zst->zst_tty; + int s; + + s = spltty(); + + if (zst->zst_rx_ready) { + zst->zst_rx_ready = 0; + zskbd_rxsoft(zst, tp); + } + + if (zst->zst_st_check) { + zst->zst_st_check = 0; + zskbd_stsoft(zst, tp); + } + + if (zst->zst_tx_done) { + zst->zst_tx_done = 0; + zskbd_txsoft(zst, tp); + } + + splx(s); +} + +struct zsops zsops_kbd = { + zskbd_rxint, /* receive char available */ + zskbd_stint, /* external/status */ + zskbd_txint, /* xmit buffer empty */ + zskbd_softint, /* process software interrupt */ +}; + +int +zskbd_enable(v, on) + void *v; + int on; +{ + struct zskbd_softc *zst = v; + + printf("zskbd_enable: %s\n", zst->zst_dev.dv_xname); + return (0); +} + +void +zskbd_set_leds(v, on) + void *v; + int on; +{ + struct zskbd_softc *zst = v; + + printf("zskbd_set_leds: %s\n", zst->zst_dev.dv_xname); + zst->zst_leds = on; +} + +int +zskbd_get_leds(v) + void *v; +{ + struct zskbd_softc *zst = v; + + printf("zskbd_get_leds: %s\n", zst->zst_dev.dv_xname); + return (zst->zst_leds); +} + +int +zskbd_ioctl(v, cmd, data, flag, p) + void *v; + u_long cmd; + caddr_t data; + int flag; + struct proc *p; +{ + struct zskbd_softc *zst = v; + + printf("zskbd_ioctl: %s\n", zst->zst_dev.dv_xname); + + switch (cmd) { + case WSKBDIO_GTYPE: +#if 0 /* XXX need to allocate a type... */ + *(int *)data = WSKBD_TYPE_XXX; +#endif + return (0); + case WSKBDIO_SETLEDS: + zskbd_set_leds(v, *(int *)data); + return (0); + case WSKBDIO_GETLEDS: + *(int *)data = zskbd_get_leds(v); + return (0); + } + return (-1); +} + +void +zskbd_cnpollc(v, on) + void *v; + int on; +{ + struct zskbd_softc *zst = v; + extern int swallow_zsintrs; + + printf("%s: cnpollc...", zst->zst_dev.dv_xname); + + if (on) + swallow_zsintrs++; + else + swallow_zsintrs--; +} + +void +zskbd_cngetc(v, type, data) + void *v; + u_int *type; + int *data; +{ + struct zskbd_softc *zst = v; + int s; + u_int8_t c, rr0; + + printf("%s: cngetc...", zst->zst_dev.dv_xname); + + s = splhigh(); + do { + rr0 = *zst->zst_cs->cs_reg_csr; + } while ((rr0 & ZSRR0_RX_READY) == 0); + + c = *zst->zst_cs->cs_reg_data; + splx(s); + + printf("%02x\n", c); + + *type = (c & 0x80) ? WSCONS_EVENT_KEY_UP : WSCONS_EVENT_KEY_DOWN; + *data = c & 0x7f; +} |