498 lines
15 KiB
C
498 lines
15 KiB
C
/* $NetBSD: ibm561.c,v 1.11 2012/02/12 16:34:11 matt Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Roland C. Dowdeswell of Ponte, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ibm561.c,v 1.11 2012/02/12 16:34:11 matt Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <dev/pci/pcivar.h>
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#include <dev/ic/ibm561reg.h>
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#include <dev/ic/ibm561var.h>
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#include <dev/ic/ramdac.h>
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#include <dev/wscons/wsconsio.h>
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/*
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* Functions exported via the RAMDAC configuration table.
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*/
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void ibm561_init(struct ramdac_cookie *);
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int ibm561_set_cmap(struct ramdac_cookie *, struct wsdisplay_cmap *);
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int ibm561_get_cmap(struct ramdac_cookie *, struct wsdisplay_cmap *);
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int ibm561_set_cursor(struct ramdac_cookie *, struct wsdisplay_cursor *);
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int ibm561_get_cursor(struct ramdac_cookie *, struct wsdisplay_cursor *);
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int ibm561_set_curpos(struct ramdac_cookie *, struct wsdisplay_curpos *);
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int ibm561_get_curpos(struct ramdac_cookie *, struct wsdisplay_curpos *);
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int ibm561_get_curmax(struct ramdac_cookie *, struct wsdisplay_curpos *);
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int ibm561_set_dotclock(struct ramdac_cookie *, unsigned);
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/* XXX const */
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struct ramdac_funcs ibm561_funcsstruct = {
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"IBM561",
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ibm561_register,
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ibm561_init,
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ibm561_set_cmap,
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ibm561_get_cmap,
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ibm561_set_cursor,
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ibm561_get_cursor,
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ibm561_set_curpos,
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ibm561_get_curpos,
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ibm561_get_curmax,
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NULL, /* check_curcmap; not needed */
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NULL, /* set_curcmap; not needed */
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NULL, /* get_curcmap; not needed */
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ibm561_set_dotclock,
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};
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/*
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* Private data.
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*/
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struct ibm561data {
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void *cookie;
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int (*ramdac_sched_update)(void *, void (*)(void *));
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void (*ramdac_wr)(void *, u_int, u_int8_t);
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u_int8_t (*ramdac_rd)(void *, u_int);
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#define CHANGED_CURCMAP 0x0001 /* cursor cmap */
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#define CHANGED_CMAP 0x0002 /* color map */
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#define CHANGED_WTYPE 0x0004 /* window types */
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#define CHANGED_DOTCLOCK 0x0008 /* dot clock */
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#define CHANGED_ALL 0x000f /* or of all above */
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u_int8_t changed;
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/* dotclock parameters */
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u_int8_t vco_div;
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u_int8_t pll_ref;
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u_int8_t div_dotclock;
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/* colormaps et al. */
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u_int8_t curcmap_r[2];
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u_int8_t curcmap_g[2];
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u_int8_t curcmap_b[2];
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u_int8_t cmap_r[IBM561_NCMAP_ENTRIES];
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u_int8_t cmap_g[IBM561_NCMAP_ENTRIES];
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u_int8_t cmap_b[IBM561_NCMAP_ENTRIES];
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u_int16_t gamma_r[IBM561_NGAMMA_ENTRIES];
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u_int16_t gamma_g[IBM561_NGAMMA_ENTRIES];
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u_int16_t gamma_b[IBM561_NGAMMA_ENTRIES];
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u_int16_t wtype[IBM561_NWTYPES];
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};
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/*
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* private functions
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*/
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void ibm561_update(void *);
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static void ibm561_load_cmap(struct ibm561data *);
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static void ibm561_load_dotclock(struct ibm561data *);
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static void ibm561_regbegin(struct ibm561data *, u_int16_t);
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static void ibm561_regcont(struct ibm561data *, u_int16_t, u_int8_t);
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static void ibm561_regcont10bit(struct ibm561data *, u_int16_t, u_int16_t);
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static void ibm561_regwr(struct ibm561data *, u_int16_t, u_int8_t);
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struct ramdac_funcs *
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ibm561_funcs(void)
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{
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return &ibm561_funcsstruct;
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}
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struct ramdac_cookie *
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ibm561_register(
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void *v,
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int (*sched_update)(void *, void (*)(void *)),
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void (*wr)(void *, u_int, u_int8_t),
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u_int8_t (*rd)(void *, u_int))
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{
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struct ibm561data *data;
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data = malloc(sizeof *data, M_DEVBUF, M_WAITOK|M_ZERO);
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data->cookie = v;
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data->ramdac_sched_update = sched_update;
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data->ramdac_wr = wr;
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data->ramdac_rd = rd;
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return (struct ramdac_cookie *)data;
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}
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/*
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* This function exists solely to provide a means to init
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* the RAMDAC without first registering. It is useful for
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* initializing the console early on.
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*/
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struct ibm561data *saved_console_data;
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void
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ibm561_cninit(
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void *v,
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int (*sched_update)(void *, void (*)(void *)),
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void (*wr)(void *, u_int, u_int8_t),
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u_int8_t (*rd)(void *, u_int),
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u_int dotclock)
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{
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struct ibm561data tmp, *data = &tmp;
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memset(data, 0x0, sizeof *data);
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data->cookie = v;
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data->ramdac_sched_update = sched_update;
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data->ramdac_wr = wr;
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data->ramdac_rd = rd;
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ibm561_set_dotclock((struct ramdac_cookie *)data, dotclock);
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saved_console_data = data;
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ibm561_init((struct ramdac_cookie *)data);
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saved_console_data = NULL;
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}
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void
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ibm561_init(struct ramdac_cookie *rc)
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{
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struct ibm561data *data = (struct ibm561data *)rc;
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int i;
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/* XXX this is _essential_ */
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ibm561_load_dotclock(data);
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/* XXXrcd: bunch of magic of which I have no current clue */
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ibm561_regwr(data, IBM561_CONFIG_REG1, 0x2a);
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ibm561_regwr(data, IBM561_CONFIG_REG3, 0x41);
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ibm561_regwr(data, IBM561_CONFIG_REG4, 0x20);
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/* initialize the card a bit */
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ibm561_regwr(data, IBM561_SYNC_CNTL, 0x1);
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ibm561_regwr(data, IBM561_CONFIG_REG2, 0x19);
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ibm561_regwr(data, IBM561_CONFIG_REG1, 0x2a);
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ibm561_regwr(data, IBM561_CONFIG_REG4, 0x20);
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ibm561_regbegin(data, IBM561_WAT_SEG_REG);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regbegin(data, IBM561_CHROMAKEY0);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regwr(data, IBM561_CURS_CNTL_REG, 0x00); /* XXX off? */
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/* cursor `hot spot' registers */
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ibm561_regbegin(data, IBM561_HOTSPOT_REG);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regcont(data, IBM561_CMD, 0xff);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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ibm561_regcont(data, IBM561_CMD, 0xff);
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ibm561_regcont(data, IBM561_CMD, 0x00);
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/* VRAM Mask Registers (diagnostics) */
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ibm561_regbegin(data, IBM561_VRAM_MASK_REG);
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ibm561_regcont(data, IBM561_CMD, 0xff);
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ibm561_regcont(data, IBM561_CMD, 0xff);
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ibm561_regcont(data, IBM561_CMD, 0xff);
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ibm561_regcont(data, IBM561_CMD, 0xff);
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ibm561_regcont(data, IBM561_CMD, 0xff);
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ibm561_regcont(data, IBM561_CMD, 0xff);
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ibm561_regcont(data, IBM561_CMD, 0xff);
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/* let's set up some decent default colour maps and gammas */
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for (i=0; i < IBM561_NCMAP_ENTRIES; i++)
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data->cmap_r[i] = data->cmap_g[i] = data->cmap_b[i] = 0xff;
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data->cmap_r[0] = data->cmap_g[0] = data->cmap_b[0] = 0x00;
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data->cmap_r[256] = data->cmap_g[256] = data->cmap_b[256] = 0x00;
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data->cmap_r[512] = data->cmap_g[512] = data->cmap_b[512] = 0x00;
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data->cmap_r[768] = data->cmap_g[768] = data->cmap_b[768] = 0x00;
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data->gamma_r[0] = data->gamma_g[0] = data->gamma_b[0] = 0x00;
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for (i=0; i < IBM561_NGAMMA_ENTRIES; i++)
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data->gamma_r[i] = data->gamma_g[i] = data->gamma_b[i] = 0xff;
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for (i=0; i < IBM561_NWTYPES; i++)
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data->wtype[i] = 0x0036;
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data->wtype[1] = 0x0028;
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/* the last step: */
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data->changed = CHANGED_ALL;
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data->ramdac_sched_update(data->cookie, ibm561_update);
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}
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int
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ibm561_set_cmap(struct ramdac_cookie *rc, struct wsdisplay_cmap *cmapp)
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{
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struct ibm561data *data = (struct ibm561data *)rc;
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u_int count, index;
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uint8_t r[IBM561_NCMAP_ENTRIES];
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uint8_t g[IBM561_NCMAP_ENTRIES];
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uint8_t b[IBM561_NCMAP_ENTRIES];
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int s, error;
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if (cmapp->index >= IBM561_NCMAP_ENTRIES ||
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cmapp->count > IBM561_NCMAP_ENTRIES - cmapp->index)
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return (EINVAL);
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index = cmapp->index;
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count = cmapp->count;
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error = copyin(cmapp->red, &r[index], count);
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if (error)
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return error;
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error = copyin(cmapp->green, &g[index], count);
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if (error)
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return error;
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error = copyin(cmapp->blue, &b[index], count);
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if (error)
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return error;
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s = spltty();
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memcpy(&data->cmap_r[index], &r[index], count);
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memcpy(&data->cmap_g[index], &g[index], count);
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memcpy(&data->cmap_b[index], &b[index], count);
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data->changed |= CHANGED_CMAP;
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data->ramdac_sched_update(data->cookie, ibm561_update);
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splx(s);
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return (0);
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}
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int
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ibm561_get_cmap(struct ramdac_cookie *rc, struct wsdisplay_cmap *cmapp)
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{
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struct ibm561data *data = (struct ibm561data *)rc;
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u_int count, index;
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int error;
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if (cmapp->index >= IBM561_NCMAP_ENTRIES ||
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cmapp->count > IBM561_NCMAP_ENTRIES - cmapp->index)
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return (EINVAL);
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count = cmapp->count;
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index = cmapp->index;
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error = copyout(&data->cmap_r[index], cmapp->red, count);
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if (error)
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return (error);
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error = copyout(&data->cmap_g[index], cmapp->green, count);
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if (error)
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return (error);
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error = copyout(&data->cmap_b[index], cmapp->blue, count);
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return (error);
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}
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/*
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* XXX:
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* I am leaving these functions returning EINVAL, as they are
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* not strictly necessary for the correct functioning of the
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* card and in fact are not used on the other TGA variants, except
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* they are exported via ioctl(2) to userland, which does not in
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* fact use them.
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*/
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int
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ibm561_set_cursor(struct ramdac_cookie *rc, struct wsdisplay_cursor *cursorp)
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{
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return EINVAL;
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}
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int
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ibm561_get_cursor(struct ramdac_cookie *rc, struct wsdisplay_cursor *cursorp)
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{
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return EINVAL;
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}
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int
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ibm561_set_curpos(struct ramdac_cookie *rc, struct wsdisplay_curpos *curposp)
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{
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return EINVAL;
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}
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int
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ibm561_get_curpos(struct ramdac_cookie *rc, struct wsdisplay_curpos *curposp)
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{
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return EINVAL;
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}
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int
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ibm561_get_curmax(struct ramdac_cookie *rc, struct wsdisplay_curpos *curposp)
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{
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return EINVAL;
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}
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int
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ibm561_set_dotclock(struct ramdac_cookie *rc, unsigned dotclock)
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{
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struct ibm561data *data = (struct ibm561data *)rc;
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/* XXXrcd: a couple of these are a little hazy, vis a vis
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* check 175MHz and 202MHz, which are wrong...
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*/
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switch (dotclock) {
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case 25175000: data->vco_div = 0x3e; data->pll_ref = 0x09; break;
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case 31500000: data->vco_div = 0x17; data->pll_ref = 0x05; break;
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case 40000000: data->vco_div = 0x42; data->pll_ref = 0x06; break;
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case 50000000: data->vco_div = 0x45; data->pll_ref = 0x05; break;
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case 65000000: data->vco_div = 0xac; data->pll_ref = 0x0c; break;
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case 69000000: data->vco_div = 0xa9; data->pll_ref = 0x0b; break;
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case 74000000: data->vco_div = 0x9c; data->pll_ref = 0x09; break;
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case 75000000: data->vco_div = 0x93; data->pll_ref = 0x08; break;
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case 103994000: data->vco_div = 0x96; data->pll_ref = 0x06; break;
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case 108180000: data->vco_div = 0xb8; data->pll_ref = 0x08; break;
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case 110000000: data->vco_div = 0xba; data->pll_ref = 0x08; break;
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case 119840000: data->vco_div = 0x82; data->pll_ref = 0x04; break;
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case 130808000: data->vco_div = 0xc8; data->pll_ref = 0x08; break;
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case 135000000: data->vco_div = 0xc1; data->pll_ref = 0x07; break;
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case 175000000: data->vco_div = 0xe2; data->pll_ref = 0x07; break;
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case 202500000: data->vco_div = 0xe2; data->pll_ref = 0x07; break;
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default:
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return EINVAL;
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}
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data->div_dotclock = 0xb0;
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data->changed |= CHANGED_DOTCLOCK;
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return 0;
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}
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/*
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* Internal Functions
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*/
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void
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ibm561_update(void *vp)
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{
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struct ibm561data *data = (struct ibm561data *)vp;
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int i;
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/* XXX see comment above ibm561_cninit() */
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if (!data)
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data = saved_console_data;
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if (data->changed & CHANGED_WTYPE) {
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ibm561_regbegin(data, IBM561_FB_WINTYPE);
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for (i=0; i < IBM561_NWTYPES; i++)
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ibm561_regcont10bit(data, IBM561_CMD_FB_WAT, data->wtype[i]);
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/* XXXrcd: quick hack here for AUX FB table */
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ibm561_regbegin(data, IBM561_AUXFB_WINTYPE);
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for (i=0; i < IBM561_NWTYPES; i++)
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ibm561_regcont(data, IBM561_CMD, 0x04);
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/* XXXrcd: quick hack here for OL WAT table */
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ibm561_regbegin(data, IBM561_OL_WINTYPE);
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for (i=0; i < IBM561_NWTYPES; i++)
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ibm561_regcont10bit(data, IBM561_CMD_FB_WAT, 0x0231);
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/* XXXrcd: quick hack here for AUX OL WAT table */
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ibm561_regbegin(data, IBM561_AUXOL_WINTYPE);
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for (i=0; i < IBM561_NWTYPES; i++)
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ibm561_regcont(data, IBM561_CMD, 0x0c);
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}
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if (data->changed & CHANGED_CMAP)
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ibm561_load_cmap(data);
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/* XXX: I am not sure in what situations it is safe to
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* change the dotclock---hope this is good.
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*/
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if (data->changed & CHANGED_DOTCLOCK)
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ibm561_load_dotclock(data);
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}
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static void
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ibm561_load_cmap(struct ibm561data *data)
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{
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int i;
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ibm561_regbegin(data, IBM561_CMAP_TABLE);
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for (i=0; i < IBM561_NCMAP_ENTRIES; i++) {
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ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_r[i]);
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ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_g[i]);
|
|
ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_b[i]);
|
|
}
|
|
|
|
ibm561_regbegin(data, IBM561_RED_GAMMA_TABLE);
|
|
for (i=0; i < 256; i++)
|
|
ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_r[i]);
|
|
|
|
ibm561_regbegin(data, IBM561_GREEN_GAMMA_TABLE);
|
|
for (i=1; i < 256; i++)
|
|
ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_g[i]);
|
|
|
|
ibm561_regbegin(data, IBM561_BLUE_GAMMA_TABLE);
|
|
for (i=1; i < 256; i++)
|
|
ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_b[i]);
|
|
|
|
}
|
|
|
|
static void
|
|
ibm561_load_dotclock(struct ibm561data *data)
|
|
{
|
|
/* XXX
|
|
* we should probably be more pro-active here, but it shouldn't
|
|
* actually happen...
|
|
*/
|
|
if (!data->vco_div || !data->pll_ref || ! data->div_dotclock) {
|
|
panic("ibm561_load_dotclock: called uninitialized");
|
|
}
|
|
|
|
ibm561_regwr(data, IBM561_PLL_VCO_DIV, data->vco_div);
|
|
ibm561_regwr(data, IBM561_PLL_REF_REG, data->pll_ref);
|
|
ibm561_regwr(data, IBM561_DIV_DOTCLCK, data->div_dotclock);
|
|
}
|
|
|
|
static void
|
|
ibm561_regcont10bit(struct ibm561data *data, u_int16_t reg, u_int16_t val)
|
|
{
|
|
data->ramdac_wr(data->cookie, IBM561_CMD_GAMMA, (val >> 2) & 0xff);
|
|
data->ramdac_wr(data->cookie, IBM561_CMD_GAMMA, (val & 0x3) << 6);
|
|
}
|
|
|
|
static void
|
|
ibm561_regbegin(struct ibm561data *data, u_int16_t reg)
|
|
{
|
|
data->ramdac_wr(data->cookie, IBM561_ADDR_LOW, reg & 0xff);
|
|
data->ramdac_wr(data->cookie, IBM561_ADDR_HIGH, (reg >> 8) & 0xff);
|
|
}
|
|
|
|
static void
|
|
ibm561_regcont(struct ibm561data *data, u_int16_t reg, u_int8_t val)
|
|
{
|
|
data->ramdac_wr(data->cookie, reg, val);
|
|
}
|
|
|
|
static void
|
|
ibm561_regwr(struct ibm561data *data, u_int16_t reg, u_int8_t val)
|
|
{
|
|
ibm561_regbegin(data, reg);
|
|
ibm561_regcont(data, IBM561_CMD, val);
|
|
}
|