/* $NetBSD: zskbd.c,v 1.2 1998/10/22 08:37:16 nisimura Exp $ */ /* * 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. * * @(#)kbd.c 8.2 (Berkeley) 10/30/93 */ /* * LK200/LK400 keyboard attached with channel A of the 2nd SCC */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "locators.h" /* * How many input characters we can buffer. * The port-specific var.h may override this. * Note: must be a power of two! */ #define ZSKBD_RX_RING_SIZE 256 #define ZSKBD_RX_RING_MASK (ZSKBD_RX_RING_SIZE-1) /* * Output buffer. Only need a few chars. */ #define ZSKBD_TX_RING_SIZE 16 #define ZSKBD_TX_RING_MASK (ZSKBD_TX_RING_SIZE-1) #define ZSKBD_BPS 4800 struct zskbd_internal { struct zs_chanstate *zsi_cs; struct lk201_state zsi_ks; }; struct zskbd_internal zskbd_console_internal; struct zskbd_softc { struct device zskbd_dev; /* required first: base device */ struct zskbd_internal *sc_itl; /* Flags to communicate with zskbd_softintr() */ volatile int zskbd_intr_flags; #define INTR_RX_OVERRUN 1 #define INTR_TX_EMPTY 2 #define INTR_ST_CHECK 4 /* * The receive ring buffer. */ u_int zskbd_rbget; /* ring buffer `get' index */ volatile u_int zskbd_rbput; /* ring buffer `put' index */ u_short zskbd_rbuf[ZSKBD_RX_RING_SIZE]; /* rr1, data pairs */ int sc_enabled; int kbd_type; int leds_state; struct device *sc_wskbddev; }; struct zsops zsops_zskbd; static void zskbd_input __P((struct zskbd_softc *, int)); static void zskbd_lk201_init __P((struct zs_chanstate *)); static void zskbd_bell __P((void *)); static void zskbd_complexbell __P((void *, struct wskbd_bell_data *)); static int zskbd_match __P((struct device *, struct cfdata *, void *)); static void zskbd_attach __P((struct device *, struct device *, void *)); struct cfattach zskbd_ca = { sizeof(struct zskbd_softc), zskbd_match, zskbd_attach, }; static int zskbd_enable __P((void *, int)); static void zskbd_set_leds __P((void *, int)); static int zskbd_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); const struct wskbd_accessops zskbd_accessops = { zskbd_enable, zskbd_set_leds, zskbd_ioctl, }; static void zskbd_cngetc(void *, u_int *, int *); static void zskbd_cnpollc(void *, int); const struct wskbd_consops zskbd_consops = { zskbd_cngetc, zskbd_cnpollc, }; const struct wskbd_mapdata zskbd_keymapdata = { zskbd_keydesctab, #ifdef ZSKBD_LAYOUT ZSKBD_LAYOUT, #else KB_US | KB_LK401, #endif }; int zskbd_cnattach __P((struct zs_chanstate *)); /* EXPORTED */ /* * kbd_match: how is this zs channel configured? */ static int zskbd_match(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct zsc_attach_args *args = aux; /* Exact match is better than wildcard. */ if (cf->cf_loc[ZSCCF_CHANNEL] == args->channel) return 2; /* This driver accepts wildcard. */ if (cf->cf_loc[ZSCCF_CHANNEL] == ZSCCF_CHANNEL_DEFAULT) return 1; return 0; } static void zskbd_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct zsc_softc *zsc = (void *)parent; struct zskbd_softc *zskbd = (void *)self; struct zsc_attach_args *args = aux; struct zs_chanstate *cs; struct zskbd_internal *zsi; struct wskbddev_attach_args a; int s, isconsole; cs = zsc->zsc_cs[args->channel]; cs->cs_private = zskbd; cs->cs_ops = &zsops_zskbd; isconsole = (args->hwflags & ZS_HWFLAG_CONSOLE); if (isconsole) { zsi = &zskbd_console_internal; } else { zsi = malloc(sizeof(struct zskbd_internal), M_DEVBUF, M_NOWAIT); zsi->zsi_cs = cs; lk201_init_keystate(&zsi->zsi_ks); } zskbd->sc_itl = zsi; printf("\n"); /* Initialize the speed, etc. */ s = splzs(); /* May need reset... */ zs_write_reg(cs, 9, ZSWR9_A_RESET); /* These are OK as set by zscc: WR3, WR4, WR5 */ /* We don't care about status or tx interrupts. */ cs->cs_preg[1] = ZSWR1_RIE; (void) zs_set_speed(cs, ZSKBD_BPS); zs_loadchannelregs(cs); splx(s); zskbd->sc_enabled = 0; zskbd_lk201_init(cs); /* XXX should identify keyboard ID here XXX */ /* XXX layout and the number of LED is varying XXX */ zskbd->kbd_type = WSKBD_TYPE_LK201; zskbd->leds_state = 0; zskbd->sc_enabled = 1; a.console = isconsole; a.keymap = &zskbd_keymapdata; a.accessops = &zskbd_accessops; a.accesscookie = zskbd; zskbd->sc_wskbddev = config_found(self, &a, wskbddevprint); } int zskbd_cnattach(cs) struct zs_chanstate *cs; { (void) zs_set_speed(cs, ZSKBD_BPS); zs_loadchannelregs(cs); zskbd_lk201_init(cs); lk201_init_keystate(&zskbd_console_internal.zsi_ks); zskbd_console_internal.zsi_cs = cs; wskbd_cnattach(&zskbd_consops, &zskbd_console_internal, &zskbd_keymapdata); return 0; } static int zskbd_enable(v, on) void *v; int on; { struct zskbd_softc *sc = v; sc->sc_enabled = on; return 0; } static void zskbd_cngetc(v, type, data) void *v; u_int *type; int *data; { struct zskbd_internal *zsi = v; int c; do { c = zs_getc(zsi->zsi_cs); } while (!lk201_decode(&zsi->zsi_ks, c, type, data)); } static void zskbd_cnpollc(v, on) void *v; int on; { #if 0 struct zskbd_internal *zsi = v; #endif } /* XXX needs adjustment between upper layer and various LK keyboard XXX */ static void zskbd_set_leds(v, leds) void *v; int leds; { struct zskbd_softc *sc = (struct zskbd_softc *)v; struct zs_chanstate *cs; int old_state; int enable_leds; cs = sc->sc_itl->zsi_cs; old_state = sc->leds_state; #if 1 if (((leds & WSKBD_LED_SCROLL) ^ (leds & WSKBD_LED_CAPS)) != 0) leds ^= (WSKBD_LED_SCROLL | WSKBD_LED_CAPS); #endif sc->leds_state = 0; if (leds & 0x01) sc->leds_state |= WSKBD_LED_SCROLL; if (leds & 0x02) sc->leds_state |= WSKBD_LED_NUM; if (leds & 0x04) sc->leds_state |= WSKBD_LED_CAPS; old_state ^= sc->leds_state; enable_leds = (leds | 0x80); zs_write_data(cs, LK_LED_DISABLE); DELAY(4000); zs_write_data(cs, (LK_LED_ALL ^ (0x0f & enable_leds))); DELAY(4000); zs_write_data(cs, LK_LED_ENABLE); DELAY(4000); zs_write_data(cs, enable_leds); } static void zskbd_bell(v) void *v; { struct zskbd_softc *sc = (struct zskbd_softc *)v; struct zs_chanstate *cs; cs = sc->sc_itl->zsi_cs; zs_write_data(cs, LK_RING_BELL); } static void zskbd_complexbell(v, bell) void *v; struct wskbd_bell_data *bell; { struct zskbd_softc *sc = (struct zskbd_softc *)v; struct zs_chanstate *cs; cs = sc->sc_itl->zsi_cs; zs_write_data(cs, LK_RING_BELL); } static int zskbd_ioctl(v, cmd, data, flag, p) void *v; u_long cmd; caddr_t data; int flag; struct proc *p; { struct zskbd_softc *sc = (struct zskbd_softc *)v; switch (cmd) { case WSKBDIO_GTYPE: *(int *)data = sc->kbd_type; return 0; case WSKBDIO_SETLEDS: zskbd_set_leds(sc, *(int *)data); return 0; case WSKBDIO_GETLEDS: *(int *)data = sc->leds_state; return 0; case WSKBDIO_BELL: zskbd_bell(sc); return 0; case WSKBDIO_COMPLEXBELL: zskbd_complexbell(sc, (struct wskbd_bell_data *)data); return 0; } return -1; } static void zskbd_input(sc, data) struct zskbd_softc *sc; int data; { u_int type; int val; if (sc->sc_enabled == 0) return; if (lk201_decode(&sc->sc_itl->zsi_ks, data, &type, &val)) wskbd_input(sc->sc_wskbddev, type, val); } /* XXX Ledendary Mach and derivatives do a bit different here XXX */ static void zskbd_lk201_init(cs) struct zs_chanstate *cs; { int i; zs_write_data(cs, LK_LED_ENABLE); DELAY(4000); zs_write_data(cs, LK_LED_ALL); DELAY(4000); #if 1 zs_write_data(cs, LK_CL_DISABLE); DELAY(4000); #else zs_write_data(cs, LK_CL_ENABLE); DELAY(4000); zs_write_data(cs, 0x87); DELAY(4000); #endif for (i=1 ; i<=14 ; i++) { zs_write_data(cs, LK_CMD_MODE(LK_UPDOWN, i)); DELAY(4000); } zs_write_data(cs, LK_BELL_ENABLE); DELAY(4000); zs_write_data(cs, 0x87); DELAY(4000); zs_write_data(cs, LK_LED_DISABLE); DELAY(4000); zs_write_data(cs, LK_LED_ALL); DELAY(4000); zs_write_data(cs, LK_KBD_ENABLE); } /**************************************************************** * Interface to the lower layer (zscc) ****************************************************************/ static void zskbd_rxint __P((struct zs_chanstate *)); static void zskbd_txint __P((struct zs_chanstate *)); static void zskbd_stint __P((struct zs_chanstate *)); static void zskbd_softint __P((struct zs_chanstate *)); static void zskbd_rxint(cs) struct zs_chanstate *cs; { struct zskbd_softc *zskbd; int put, put_next; u_char c, rr1; zskbd = cs->cs_private; put = zskbd->zskbd_rbput; /* * 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 (rr1 & (ZSRR1_FE | ZSRR1_DO | ZSRR1_PE)) { /* Clear the receive error. */ zs_write_csr(cs, ZSWR0_RESET_ERRORS); } zskbd->zskbd_rbuf[put] = (c << 8) | rr1; put_next = (put + 1) & ZSKBD_RX_RING_MASK; /* Would overrun if increment makes (put==get). */ if (put_next == zskbd->zskbd_rbget) { zskbd->zskbd_intr_flags |= INTR_RX_OVERRUN; } else { /* OK, really increment. */ put = put_next; } /* Done reading. */ zskbd->zskbd_rbput = put; /* Ask for softint() call. */ cs->cs_softreq = 1; } static void zskbd_txint(cs) struct zs_chanstate *cs; { struct zskbd_softc *zskbd; zskbd = cs->cs_private; zs_write_csr(cs, ZSWR0_RESET_TXINT); zskbd->zskbd_intr_flags |= INTR_TX_EMPTY; /* Ask for softint() call. */ cs->cs_softreq = 1; } static void zskbd_stint(cs) struct zs_chanstate *cs; { struct zskbd_softc *zskbd; int rr0; zskbd = cs->cs_private; rr0 = zs_read_csr(cs); zs_write_csr(cs, ZSWR0_RESET_STATUS); /* * We have to accumulate status line changes here. * Otherwise, if we get multiple status interrupts * before the softint runs, we could fail to notice * some status line changes in the softint routine. * Fix from Bill Studenmund, October 1996. */ cs->cs_rr0_delta |= (cs->cs_rr0 ^ rr0); cs->cs_rr0 = rr0; zskbd->zskbd_intr_flags |= INTR_ST_CHECK; /* Ask for softint() call. */ cs->cs_softreq = 1; } static void zskbd_softint(cs) struct zs_chanstate *cs; { struct zskbd_softc *zskbd; int get, c, s; int intr_flags; u_short ring_data; zskbd = cs->cs_private; /* Atomically get and clear flags. */ s = splzs(); intr_flags = zskbd->zskbd_intr_flags; zskbd->zskbd_intr_flags = 0; /* Now lower to spltty for the rest. */ (void) spltty(); /* * Copy data from the receive ring to the event layer. */ get = zskbd->zskbd_rbget; while (get != zskbd->zskbd_rbput) { ring_data = zskbd->zskbd_rbuf[get]; get = (get + 1) & ZSKBD_RX_RING_MASK; /* low byte of ring_data is rr1 */ c = (ring_data >> 8) & 0xff; if (ring_data & ZSRR1_DO) intr_flags |= INTR_RX_OVERRUN; if (ring_data & (ZSRR1_FE | ZSRR1_PE)) { #if 0 /* XXX */ log(LOG_ERR, "%s: input error (0x%x)\n", zskbd->zskbd_dev.dv_xname, ring_data); c = -1; /* signal input error */ #endif } /* Pass this up to the "middle" layer. */ zskbd_input(zskbd, c); } if (intr_flags & INTR_RX_OVERRUN) { #if 0 /* XXX */ log(LOG_ERR, "%s: input overrun\n", zskbd->zskbd_dev.dv_xname); #endif } zskbd->zskbd_rbget = get; if (intr_flags & INTR_TX_EMPTY) { /* * Transmit done. (Not expected.) */ #if 0 log(LOG_ERR, "%s: transmit interrupt?\n", zskbd->zskbd_dev.dv_xname); #endif } if (intr_flags & INTR_ST_CHECK) { /* * Status line change. (Not expected.) */ log(LOG_ERR, "%s: status interrupt?\n", zskbd->zskbd_dev.dv_xname); cs->cs_rr0_delta = 0; } splx(s); } struct zsops zsops_zskbd = { zskbd_rxint, /* receive char available */ zskbd_stint, /* external/status */ zskbd_txint, /* xmit buffer empty */ zskbd_softint, /* process software interrupt */ };