From b16807c51a9a9ef6476400bc547db058058cdaf9 Mon Sep 17 00:00:00 2001 From: elric Date: Sat, 4 Mar 2000 10:25:57 +0000 Subject: [PATCH] Graphics card independant Bt485 code, derived from dev/pci/tga_bt485.c. --- sys/dev/ic/bt485.c | 599 ++++++++++++++++++++++++++++++++++++++++++ sys/dev/ic/bt485var.h | 48 ++++ 2 files changed, 647 insertions(+) create mode 100644 sys/dev/ic/bt485.c create mode 100644 sys/dev/ic/bt485var.h diff --git a/sys/dev/ic/bt485.c b/sys/dev/ic/bt485.c new file mode 100644 index 000000000000..dbcf3e97b490 --- /dev/null +++ b/sys/dev/ic/bt485.c @@ -0,0 +1,599 @@ +/* $NetBSD: bt485.c,v 1.1 2000/03/04 10:25:57 elric Exp $ */ + +/* + * Copyright (c) 1995, 1996 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Chris G. Demetriou + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + + /* This code was derived from and originally located in sys/dev/pci/ + * NetBSD: tga_bt485.c,v 1.4 1999/03/24 05:51:21 mrg Exp + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include + +/* + * Functions exported via the RAMDAC configuration table. + */ +void bt485_init __P((struct ramdac_cookie *)); +int bt485_set_cmap __P((struct ramdac_cookie *, + struct wsdisplay_cmap *)); +int bt485_get_cmap __P((struct ramdac_cookie *, + struct wsdisplay_cmap *)); +int bt485_set_cursor __P((struct ramdac_cookie *, + struct wsdisplay_cursor *)); +int bt485_get_cursor __P((struct ramdac_cookie *, + struct wsdisplay_cursor *)); +int bt485_set_curpos __P((struct ramdac_cookie *, + struct wsdisplay_curpos *)); +int bt485_get_curpos __P((struct ramdac_cookie *, + struct wsdisplay_curpos *)); +int bt485_get_curmax __P((struct ramdac_cookie *, + struct wsdisplay_curpos *)); + +/* XXX const */ +struct ramdac_funcs bt485_funcsstruct = { + "Bt485", + bt485_init, + bt485_set_cmap, + bt485_get_cmap, + bt485_set_cursor, + bt485_get_cursor, + bt485_set_curpos, + bt485_get_curpos, + bt485_get_curmax, + NULL, /* check_curcmap; not needed */ + NULL, /* set_curcmap; not needed */ + NULL, /* get_curcmap; not needed */ +}; + +/* + * Private data. + */ +struct bt485data { + void *cookie; /* This is what is passed + * around, and is probably + * struct tga_devconfig * + */ + + int (*ramdac_sched_update) __P((void *, void (*)(void *))); + void (*ramdac_wr) __P((void *, u_int, u_int8_t)); + u_int8_t (*ramdac_rd) __P((void *, u_int)); + + int changed; /* what changed; see below */ + int curenb; /* cursor enabled */ + struct wsdisplay_curpos curpos; /* current cursor position */ + struct wsdisplay_curpos curhot; /* cursor hotspot */ + char curcmap_r[2]; /* cursor colormap */ + char curcmap_g[2]; + char curcmap_b[2]; + struct wsdisplay_curpos cursize; /* current cursor size */ + char curimage[512]; /* cursor image data */ + char curmask[512]; /* cursor mask data */ + char cmap_r[256]; /* colormap */ + char cmap_g[256]; + char cmap_b[256]; +}; + +#define DATA_ENB_CHANGED 0x01 /* cursor enable changed */ +#define DATA_CURCMAP_CHANGED 0x02 /* cursor colormap changed */ +#define DATA_CURSHAPE_CHANGED 0x04 /* cursor size, image, mask changed */ +#define DATA_CMAP_CHANGED 0x08 /* colormap changed */ +#define DATA_ALL_CHANGED 0x0f + +#define CURSOR_MAX_SIZE 64 + +/* + * Internal functions. + */ +inline void bt485_wr_i __P((struct bt485data *, u_int8_t, u_int8_t)); +inline u_int8_t bt485_rd_i __P((struct bt485data *, u_int8_t)); +void bt485_update __P((void *)); +void bt485_update_curpos __P((struct bt485data *)); + +/*****************************************************************************/ + +/* + * Functions exported via the RAMDAC configuration table. + */ + +struct ramdac_funcs * +bt485_funcs(void) +{ + return &bt485_funcsstruct; +} + +struct ramdac_cookie * +bt485_register(v, sched_update, wr, rd) + void *v; + int (*sched_update)(void *, void (*)(void *)); + void (*wr)(void *, u_int, u_int8_t); + u_int8_t (*rd)(void *, u_int); +{ + struct bt485data *data; + /* + * XXX -- comment out of date. rcd. + * If we should allocate a new private info struct, do so. + * Otherwise, use the one we have (if it's there), or + * use the temporary one on the stack. + */ + data = malloc(sizeof *data, M_DEVBUF, M_WAITOK); + /* XXX -- if !data */ + data->cookie = v; + data->ramdac_sched_update = sched_update; + data->ramdac_wr = wr; + data->ramdac_rd = rd; + return (struct ramdac_cookie *)data; +} + +/* + * This function exists solely to provide a means to init + * the RAMDAC without first registering. It is useful for + * initializing the console early on. + */ +void +bt485_cninit(v, sched_update, wr, rd) + void *v; + int (*sched_update)(void *, void (*)(void *)); + void (*wr)(void *, u_int, u_int8_t); + u_int8_t (*rd)(void *, u_int); +{ + struct bt485data tmp, *data = &tmp; + data->cookie = v; + data->ramdac_sched_update = sched_update; + data->ramdac_wr = wr; + data->ramdac_rd = rd; + bt485_init((struct ramdac_cookie *)data); +} + +void +bt485_init(rc) + struct ramdac_cookie *rc; +{ + u_int8_t regval; + struct bt485data *data = (struct bt485data *)rc; + int i; + + /* + * Init the BT485 for normal operation. + */ + + /* + * Allow indirect register access. (Actually, this is + * already enabled. In fact, if it is _disabled_, for + * some reason the monitor appears to lose sync!!! (?!?!) + */ + regval = data->ramdac_rd(data->cookie, BT485_REG_COMMAND_0); + regval |= 0x80; + /* + * Set the RAMDAC to 8 bit resolution, rather than 6 bit + * resolution. + */ + regval |= 0x02; + data->ramdac_wr(data->cookie, BT485_REG_COMMAND_0, regval); + + /* Set the RAMDAC to 8BPP (no interestion options). */ + data->ramdac_wr(data->cookie, BT485_REG_COMMAND_1, 0x40); + + /* Disable the cursor (for now) */ + regval = data->ramdac_rd(data->cookie, BT485_REG_COMMAND_2); + regval &= ~0x03; + regval |= 0x24; + data->ramdac_wr(data->cookie, BT485_REG_COMMAND_2, regval); + + /* Use a 64x64x2 cursor */ + regval = bt485_rd_i(data, BT485_IREG_COMMAND_3); + regval |= 0x04; + regval |= 0x08; + bt485_wr_i(data, BT485_IREG_COMMAND_3, regval); + + /* Set the Pixel Mask to something useful */ + data->ramdac_wr(data->cookie, BT485_REG_PIXMASK, 0xff); + + /* + * Initalize the RAMDAC info struct to hold all of our + * data, and fill it in. + */ + data->changed = DATA_ALL_CHANGED; + + data->curenb = 0; /* cursor disabled */ + data->curpos.x = data->curpos.y = 0; /* right now at 0,0 */ + data->curhot.x = data->curhot.y = 0; /* hot spot at 0,0 */ + + /* initial cursor colormap: 0 is black, 1 is white */ + data->curcmap_r[0] = data->curcmap_g[0] = data->curcmap_b[0] = 0; + data->curcmap_r[1] = data->curcmap_g[1] = data->curcmap_b[1] = 0xff; + + /* initial cursor data: 64x64 block of white. */ + data->cursize.x = data->cursize.y = 64; + for (i = 0; i < 512; i++) + data->curimage[i] = data->curmask[i] = 0xff; + + /* Initial colormap: 0 is black, everything else is white */ + data->cmap_r[0] = data->cmap_g[0] = data->cmap_b[0] = 0; + for (i = 1; i < 256; i++) + data->cmap_r[i] = data->cmap_g[i] = data->cmap_b[i] = 255; + + bt485_update((void *)data); +} + +int +bt485_set_cmap(rc, cmapp) + struct ramdac_cookie *rc; + struct wsdisplay_cmap *cmapp; +{ + struct bt485data *data = (struct bt485data *)rc; + int count, index, s; + + if ((u_int)cmapp->index >= 256 || + ((u_int)cmapp->index + (u_int)cmapp->count) > 256) + return (EINVAL); + if (!uvm_useracc(cmapp->red, cmapp->count, B_READ) || + !uvm_useracc(cmapp->green, cmapp->count, B_READ) || + !uvm_useracc(cmapp->blue, cmapp->count, B_READ)) + return (EFAULT); + + s = spltty(); + + index = cmapp->index; + count = cmapp->count; + copyin(cmapp->red, &data->cmap_r[index], count); + copyin(cmapp->green, &data->cmap_g[index], count); + copyin(cmapp->blue, &data->cmap_b[index], count); + + data->changed |= DATA_CMAP_CHANGED; + + data->ramdac_sched_update(data->cookie, bt485_update); + splx(s); + + return (0); +} + +int +bt485_get_cmap(rc, cmapp) + struct ramdac_cookie *rc; + struct wsdisplay_cmap *cmapp; +{ + struct bt485data *data = (struct bt485data *)rc; + int error, count, index; + + if ((u_int)cmapp->index >= 256 || + ((u_int)cmapp->index + (u_int)cmapp->count) > 256) + return (EINVAL); + + count = cmapp->count; + index = cmapp->index; + + error = copyout(&data->cmap_r[index], cmapp->red, count); + if (error) + return (error); + error = copyout(&data->cmap_g[index], cmapp->green, count); + if (error) + return (error); + error = copyout(&data->cmap_b[index], cmapp->blue, count); + return (error); +} + +int +bt485_set_cursor(rc, cursorp) + struct ramdac_cookie *rc; + struct wsdisplay_cursor *cursorp; +{ + struct bt485data *data = (struct bt485data *)rc; + int count, index, v, s; + + v = cursorp->which; + + /* + * For DOCMAP and DOSHAPE, verify that parameters are OK + * before we do anything that we can't recover from. + */ + if (v & WSDISPLAY_CURSOR_DOCMAP) { + if ((u_int)cursorp->cmap.index > 2 || + ((u_int)cursorp->cmap.index + + (u_int)cursorp->cmap.count) > 2) + return (EINVAL); + count = cursorp->cmap.count; + if (!uvm_useracc(cursorp->cmap.red, count, B_READ) || + !uvm_useracc(cursorp->cmap.green, count, B_READ) || + !uvm_useracc(cursorp->cmap.blue, count, B_READ)) + return (EFAULT); + } + if (v & WSDISPLAY_CURSOR_DOSHAPE) { + if ((u_int)cursorp->size.x > CURSOR_MAX_SIZE || + (u_int)cursorp->size.y > CURSOR_MAX_SIZE) + return (EINVAL); + count = (CURSOR_MAX_SIZE / NBBY) * data->cursize.y; + if (!uvm_useracc(cursorp->image, count, B_READ) || + !uvm_useracc(cursorp->mask, count, B_READ)) + return (EFAULT); + } + + if (v & (WSDISPLAY_CURSOR_DOPOS | WSDISPLAY_CURSOR_DOCUR)) { + if (v & WSDISPLAY_CURSOR_DOPOS) + data->curpos = cursorp->pos; + if (v & WSDISPLAY_CURSOR_DOCUR) + data->curhot = cursorp->hot; + bt485_update_curpos(data); + } + + s = spltty(); + + /* Parameters are OK; perform the requested operations. */ + if (v & WSDISPLAY_CURSOR_DOCUR) { + data->curenb = cursorp->enable; + data->changed |= DATA_ENB_CHANGED; + } + if (v & WSDISPLAY_CURSOR_DOCMAP) { + count = cursorp->cmap.count; + index = cursorp->cmap.index; + copyin(cursorp->cmap.red, &data->curcmap_r[index], count); + copyin(cursorp->cmap.green, &data->curcmap_g[index], count); + copyin(cursorp->cmap.blue, &data->curcmap_b[index], count); + data->changed |= DATA_CURCMAP_CHANGED; + } + if (v & WSDISPLAY_CURSOR_DOSHAPE) { + data->cursize = cursorp->size; + count = (CURSOR_MAX_SIZE / NBBY) * data->cursize.y; + bzero(data->curimage, sizeof data->curimage); + bzero(data->curmask, sizeof data->curmask); + copyin(cursorp->image, data->curimage, count); /* can't fail */ + copyin(cursorp->mask, data->curmask, count); /* can't fail */ + data->changed |= DATA_CURSHAPE_CHANGED; + } + + if (data->changed) + data->ramdac_sched_update(data->cookie, bt485_update); + splx(s); + + return (0); +} + +int +bt485_get_cursor(rc, cursorp) + struct ramdac_cookie *rc; + struct wsdisplay_cursor *cursorp; +{ + struct bt485data *data = (struct bt485data *)rc; + int error, count; + + /* we return everything they want */ + cursorp->which = WSDISPLAY_CURSOR_DOALL; + + cursorp->enable = data->curenb; /* DOCUR */ + cursorp->pos = data->curpos; /* DOPOS */ + cursorp->hot = data->curhot; /* DOHOT */ + + cursorp->cmap.index = 0; /* DOCMAP */ + cursorp->cmap.count = 2; + if (cursorp->cmap.red != NULL) { + error = copyout(data->curcmap_r, cursorp->cmap.red, 2); + if (error) + return (error); + } + if (cursorp->cmap.green != NULL) { + error = copyout(data->curcmap_g, cursorp->cmap.green, 2); + if (error) + return (error); + } + if (cursorp->cmap.blue != NULL) { + error = copyout(data->curcmap_b, cursorp->cmap.blue, 2); + if (error) + return (error); + } + + cursorp->size = data->cursize; /* DOSHAPE */ + if (cursorp->image != NULL) { + count = (CURSOR_MAX_SIZE / NBBY) * data->cursize.y; + error = copyout(data->curimage, cursorp->image, count); + if (error) + return (error); + error = copyout(data->curmask, cursorp->mask, count); + if (error) + return (error); + } + + return (0); +} + +int +bt485_set_curpos(rc, curposp) + struct ramdac_cookie *rc; + struct wsdisplay_curpos *curposp; +{ + struct bt485data *data = (struct bt485data *)rc; + + data->curpos = *curposp; + bt485_update_curpos(data); + + return (0); +} + +int +bt485_get_curpos(rc, curposp) + struct ramdac_cookie *rc; + struct wsdisplay_curpos *curposp; +{ + struct bt485data *data = (struct bt485data *)rc; + + *curposp = data->curpos; + return (0); +} + +int +bt485_get_curmax(rc, curposp) + struct ramdac_cookie *rc; + struct wsdisplay_curpos *curposp; +{ + + curposp->x = curposp->y = CURSOR_MAX_SIZE; + return (0); +} + +/*****************************************************************************/ + +/* + * Internal functions. + */ + +inline void +bt485_wr_i(data, ireg, val) + struct bt485data *data; + u_int8_t ireg; + u_int8_t val; +{ + data->ramdac_wr(data->cookie, BT485_REG_PCRAM_WRADDR, ireg); + data->ramdac_wr(data->cookie, BT485_REG_EXTENDED, val); +} + +inline u_int8_t +bt485_rd_i(data, ireg) + struct bt485data *data; + u_int8_t ireg; +{ + data->ramdac_wr(data->cookie, BT485_REG_PCRAM_WRADDR, ireg); + return (data->ramdac_rd(data->cookie, BT485_REG_EXTENDED)); +} + +void +bt485_update(vp) + void *vp; +{ + struct bt485data *data = vp; + u_int8_t regval; + int count, i, v; + + v = data->changed; + data->changed = 0; + + if (v & DATA_ENB_CHANGED) { + regval = data->ramdac_rd(data->cookie, BT485_REG_COMMAND_2); + if (data->curenb) + regval |= 0x01; + else + regval &= ~0x03; + data->ramdac_wr(data->cookie, BT485_REG_COMMAND_2, regval); + } + + if (v & DATA_CURCMAP_CHANGED) { + /* addr[9:0] assumed to be 0 */ + /* set addr[7:0] to 1 */ + data->ramdac_wr(data->cookie, BT485_REG_COC_WRADDR, 0x01); + + /* spit out the cursor data */ + for (i = 0; i < 2; i++) { + data->ramdac_wr(data->cookie, BT485_REG_COCDATA, + data->curcmap_r[i]); + data->ramdac_wr(data->cookie, BT485_REG_COCDATA, + data->curcmap_g[i]); + data->ramdac_wr(data->cookie, BT485_REG_COCDATA, + data->curcmap_b[i]); + } + } + + if (v & DATA_CURSHAPE_CHANGED) { + count = (CURSOR_MAX_SIZE / NBBY) * data->cursize.y; + + /* + * Write the cursor image data: + * set addr[9:8] to 0, + * set addr[7:0] to 0, + * spit it all out. + */ + regval = bt485_rd_i(data, BT485_IREG_COMMAND_3); + regval &= ~0x03; + bt485_wr_i(data, BT485_IREG_COMMAND_3, regval); + data->ramdac_wr(data->cookie, BT485_REG_PCRAM_WRADDR, 0); + for (i = 0; i < count; i++) + data->ramdac_wr(data->cookie, BT485_REG_CURSOR_RAM, + data->curimage[i]); + + /* + * Write the cursor mask data: + * set addr[9:8] to 2, + * set addr[7:0] to 0, + * spit it all out. + */ + regval = bt485_rd_i(data, BT485_IREG_COMMAND_3); + regval &= ~0x03; regval |= 0x02; + bt485_wr_i(data, BT485_IREG_COMMAND_3, regval); + data->ramdac_wr(data->cookie, BT485_REG_PCRAM_WRADDR, 0); + for (i = 0; i < count; i++) + data->ramdac_wr(data->cookie, BT485_REG_CURSOR_RAM, + data->curmask[i]); + + /* set addr[9:0] back to 0 */ + regval = bt485_rd_i(data, BT485_IREG_COMMAND_3); + regval &= ~0x03; + bt485_wr_i(data, BT485_IREG_COMMAND_3, regval); + } + + if (v & DATA_CMAP_CHANGED) { + /* addr[9:0] assumed to be 0 */ + /* set addr[7:0] to 0 */ + data->ramdac_wr(data->cookie, BT485_REG_PCRAM_WRADDR, 0x00); + + /* spit out the cursor data */ + for (i = 0; i < 256; i++) { + data->ramdac_wr(data->cookie, BT485_REG_PALETTE, + data->cmap_r[i]); + data->ramdac_wr(data->cookie, BT485_REG_PALETTE, + data->cmap_g[i]); + data->ramdac_wr(data->cookie, BT485_REG_PALETTE, + data->cmap_b[i]); + } + } +} + +void +bt485_update_curpos(data) + struct bt485data *data; +{ + void *cookie = data->cookie; + int s, x, y; + + s = spltty(); + + x = data->curpos.x + CURSOR_MAX_SIZE - data->curhot.x; + y = data->curpos.y + CURSOR_MAX_SIZE - data->curhot.y; + data->ramdac_wr(cookie, BT485_REG_CURSOR_X_LOW, x & 0xff); + data->ramdac_wr(cookie, BT485_REG_CURSOR_X_HIGH, (x >> 8) & 0x0f); + data->ramdac_wr(cookie, BT485_REG_CURSOR_Y_LOW, y & 0xff); + data->ramdac_wr(cookie, BT485_REG_CURSOR_Y_HIGH, (y >> 8) & 0x0f); + + splx(s); +} diff --git a/sys/dev/ic/bt485var.h b/sys/dev/ic/bt485var.h new file mode 100644 index 000000000000..2f25d03e43be --- /dev/null +++ b/sys/dev/ic/bt485var.h @@ -0,0 +1,48 @@ +/* $NetBSD: bt485var.h,v 1.1 2000/03/04 10:25:57 elric Exp $ */ + +/*- + * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Roland C. Dowdeswell. + * + * 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 NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ + + +struct ramdac_funcs *bt485_funcs(void); +struct ramdac_cookie *bt485_register __P((void *, + int (*)(void *, void (*)(void *)), + void (*)(void *, u_int, u_int8_t), + u_int8_t (*)(void *, u_int))); +void bt485_cninit __P((void *, + int (*)(void *, void (*)(void *)), + void (*)(void *, u_int, u_int8_t), + u_int8_t (*)(void *, u_int)));