/* $OpenBSD: bt463.c,v 1.12 2008/06/26 05:42:15 ray Exp $ */ /* $NetBSD: bt463.c,v 1.2 2000/06/13 17:21:06 nathanw Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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. * * 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. */ /* * 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_bt463.c,v 1.5 2000/03/04 10:27:59 elric Exp */ #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Functions exported via the RAMDAC configuration table. */ void bt463_init(struct ramdac_cookie *); int bt463_set_cmap(struct ramdac_cookie *, struct wsdisplay_cmap *); int bt463_get_cmap(struct ramdac_cookie *, struct wsdisplay_cmap *); int bt463_set_cursor(struct ramdac_cookie *, struct wsdisplay_cursor *); int bt463_get_cursor(struct ramdac_cookie *, struct wsdisplay_cursor *); int bt463_set_curpos(struct ramdac_cookie *, struct wsdisplay_curpos *); int bt463_get_curpos(struct ramdac_cookie *, struct wsdisplay_curpos *); int bt463_get_curmax(struct ramdac_cookie *, struct wsdisplay_curpos *); int bt463_check_curcmap(struct ramdac_cookie *, struct wsdisplay_cursor *cursorp); void bt463_set_curcmap(struct ramdac_cookie *, struct wsdisplay_cursor *cursorp); int bt463_get_curcmap(struct ramdac_cookie *, struct wsdisplay_cursor *cursorp); #ifdef BT463_DEBUG int bt463_store(void *); int bt463_debug(void *); int bt463_readback(void *); void bt463_copyback(void *); #endif struct ramdac_funcs bt463_funcsstruct = { "Bt463", bt463_register, bt463_init, bt463_set_cmap, bt463_get_cmap, bt463_set_cursor, bt463_get_cursor, bt463_set_curpos, bt463_get_curpos, bt463_get_curmax, bt463_check_curcmap, bt463_set_curcmap, bt463_get_curcmap, NULL, }; /* * Private data. */ struct bt463data { void *cookie; /* This is what is passed * around, and is probably * struct tga_devconfig * */ int (*ramdac_sched_update)(void *, void (*)(void *)); void (*ramdac_wr)(void *, u_int, u_int8_t); u_int8_t (*ramdac_rd)(void *, u_int); int changed; /* what changed; see below */ char curcmap_r[2]; /* cursor colormap */ char curcmap_g[2]; char curcmap_b[2]; char cmap_r[BT463_NCMAP_ENTRIES]; /* colormap */ char cmap_g[BT463_NCMAP_ENTRIES]; char cmap_b[BT463_NCMAP_ENTRIES]; int window_type[16]; /* 16 24-bit window type table entries */ }; /* When we're doing console initialization, there's no * way to get our cookie back to the video card's softc * before we call sched_update. So we stash it here, * and bt463_update will look for it here first. */ static struct bt463data *console_data; #define BTWREG(data, addr, val) do { bt463_wraddr((data), (addr)); \ (data)->ramdac_wr((data)->cookie, BT463_REG_IREG_DATA, (val)); } while (0) #define BTWNREG(data, val) (data)->ramdac_wr((data)->cookie, \ BT463_REG_IREG_DATA, (val)) #define BTRREG(data, addr) (bt463_wraddr((data), (addr)), \ (data)->ramdac_rd((data)->cookie, BT463_REG_IREG_DATA)) #define BTRNREG(data) ((data)->ramdac_rd((data)->cookie, BT463_REG_IREG_DATA)) #define DATA_CURCMAP_CHANGED 0x01 /* cursor colormap changed */ #define DATA_CMAP_CHANGED 0x02 /* colormap changed */ #define DATA_WTYPE_CHANGED 0x04 /* window type table changed */ #define DATA_ALL_CHANGED 0x07 /* * Internal functions. */ inline void bt463_wraddr(struct bt463data *, u_int16_t); void bt463_update(void *); /*****************************************************************************/ /* * Functions exported via the RAMDAC configuration table. */ struct ramdac_funcs * bt463_funcs(void) { return &bt463_funcsstruct; } struct ramdac_cookie * bt463_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 bt463data *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 bt463_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 bt463data tmp, *data = &tmp; data->cookie = v; data->ramdac_sched_update = sched_update; data->ramdac_wr = wr; data->ramdac_rd = rd; /* Set up console_data so that when bt463_update is called back, * it can use the right information. */ console_data = data; bt463_init((struct ramdac_cookie *)data); console_data = NULL; } void bt463_init(rc) struct ramdac_cookie *rc; { struct bt463data *data = (struct bt463data *)rc; int i; /* * Init the BT463 for normal operation. */ /* * Setup: * reg 0: 4:1 multiplexing, 25/75 blink. * reg 1: Overlay mapping: mapped to common palette, * 14 window type entries, 24-plane configuration mode, * 4 overlay planes, underlays disabled, no cursor. * reg 2: sync-on-green enabled, pedestal enabled. */ BTWREG(data, BT463_IREG_COMMAND_0, 0x40); BTWREG(data, BT463_IREG_COMMAND_1, 0x48); BTWREG(data, BT463_IREG_COMMAND_2, 0xC0); /* * Initialize the read mask. */ bt463_wraddr(data, BT463_IREG_READ_MASK_P0_P7); for (i = 0; i < 4; i++) BTWNREG(data, 0xff); /* * Initialize the blink mask. */ bt463_wraddr(data, BT463_IREG_BLINK_MASK_P0_P7); for (i = 0; i < 4; i++) BTWNREG(data, 0); /* * Clear test register */ BTWREG(data, BT463_IREG_TEST, 0); /* * Initialize the RAMDAC info struct to hold all of our * data, and fill it in. */ data->changed = DATA_ALL_CHANGED; /* 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 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] = rasops_cmap[3*i + 0]; data->cmap_g[i] = rasops_cmap[3*i + 1]; data->cmap_b[i] = rasops_cmap[3*i + 2]; } /* Initialize the window type table: * * Entry 0: 24-plane truecolor, overlays enabled, bypassed. * * Lookup table bypass: yes ( 1 << 23 & 0x800000) 800000 * Colormap address: 0x000 (0x000 << 17 & 0x7e0000) 0 * Overlay mask: 0xf ( 0xf << 13 & 0x01e000) 1e000 * Overlay location: P<27:24> ( 0 << 12 & 0x001000) 0 * Display mode: Truecolor ( 0 << 9 & 0x000e00) 000 * Number of planes: 8 ( 8 << 5 & 0x0001e0) 100 * Plane shift: 0 ( 0 << 0 & 0x00001f) 0 * -------- * 0x81e100 */ data->window_type[0] = 0x81e100; /* Entry 1: 8-plane pseudocolor in the bottom 8 bits, * overlays enabled, colormap starting at 0. * * Lookup table bypass: no ( 0 << 23 & 0x800000) 0 * Colormap address: 0x000 (0x000 << 17 & 0x7e0000) 0 * Overlay mask: 0xf ( 0xf << 13 & 0x01e000) 0x1e000 * Overlay location: P<27:24> ( 0 << 12 & 0x001000) 0 * Display mode: Pseudocolor ( 1 << 9 & 0x000e00) 0x200 * Number of planes: 8 ( 8 << 5 & 0x0001e0) 0x100 * Plane shift: 16 ( 0x10 << 0 & 0x00001f) 10 * -------- * 0x01e310 */ data->window_type[1] = 0x01e310; /* The colormap interface to the world only supports one colormap, * so having an entry for the 'alternate' colormap in the bt463 * probably isn't useful. */ /* Fill the remaining table entries with clones of entry 0 until we * figure out a better use for them. */ for (i = 2; i < BT463_NWTYPE_ENTRIES; i++) { data->window_type[i] = 0x81e100; } data->ramdac_sched_update(data->cookie, bt463_update); } int bt463_set_cmap(rc, cmapp) struct ramdac_cookie *rc; struct wsdisplay_cmap *cmapp; { struct bt463data *data = (struct bt463data *)rc; u_int count, index; int s, error; index = cmapp->index; count = cmapp->count; if (index >= BT463_NCMAP_ENTRIES || count > BT463_NCMAP_ENTRIES - index) return (EINVAL); s = spltty(); if ((error = copyin(cmapp->red, &data->cmap_r[index], count)) != 0) { splx(s); return (error); } if ((error = copyin(cmapp->green, &data->cmap_g[index], count)) != 0) { splx(s); return (error); } if ((error = copyin(cmapp->blue, &data->cmap_b[index], count)) != 0) { splx(s); return (error); } data->changed |= DATA_CMAP_CHANGED; data->ramdac_sched_update(data->cookie, bt463_update); splx(s); return (0); } int bt463_get_cmap(rc, cmapp) struct ramdac_cookie *rc; struct wsdisplay_cmap *cmapp; { struct bt463data *data = (struct bt463data *)rc; u_int count, index; int error; count = cmapp->count; index = cmapp->index; if (index >= BT463_NCMAP_ENTRIES || count > BT463_NCMAP_ENTRIES - index) return (EINVAL); 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 bt463_check_curcmap(rc, cursorp) struct ramdac_cookie *rc; struct wsdisplay_cursor *cursorp; { u_int index, count; u_int8_t spare[2]; int error; index = cursorp->cmap.index; count = cursorp->cmap.count; if (index >= 2 || count > 2 - index) return (EINVAL); if ((error = copyin(&cursorp->cmap.red, &spare, count)) != 0) return (error); if ((error = copyin(&cursorp->cmap.green, &spare, count)) != 0) return (error); if ((error = copyin(&cursorp->cmap.blue, &spare, count)) != 0) return (error); return (0); } void bt463_set_curcmap(rc, cursorp) struct ramdac_cookie *rc; struct wsdisplay_cursor *cursorp; { struct bt463data *data = (struct bt463data *)rc; int count, index; /* can't fail; parameters have already been checked. */ 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; data->ramdac_sched_update(data->cookie, bt463_update); } int bt463_get_curcmap(rc, cursorp) struct ramdac_cookie *rc; struct wsdisplay_cursor *cursorp; { struct bt463data *data = (struct bt463data *)rc; int error; 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); } return (0); } /*****************************************************************************/ /* * Internal functions. */ #ifdef BT463_DEBUG int bt463_store(void *v) { struct bt463data *data = (struct bt463data *)v; data->changed = DATA_ALL_CHANGED; data->ramdac_sched_update(data->cookie, bt463_update); printf("Scheduled bt463 store\n"); return 0; } int bt463_readback(void *v) { struct bt463data *data = (struct bt463data *)v; data->ramdac_sched_update(data->cookie, bt463_copyback); printf("Scheduled bt463 copyback\n"); return 0; } int bt463_debug(v) void *v; { struct bt463data *data = (struct bt463data *)v; int i; u_int8_t val; printf("BT463 main regs:\n"); for (i = 0x200; i < 0x20F; i ++) { val = BTRREG(data, i); printf(" $%04x %02x\n", i, val); } printf("BT463 revision register:\n"); val = BTRREG(data, 0x220); printf(" $%04x %02x\n", 0x220, val); printf("BT463 window type table (from softc):\n"); for (i = 0; i < BT463_NWTYPE_ENTRIES; i++) { printf("%02x %06x\n", i, data->window_type[i]); } return 0; } void bt463_copyback(p) void *p; { struct bt463data *data = (struct bt463data *)p; int i; for (i = 0; i < BT463_NWTYPE_ENTRIES; i++) { bt463_wraddr(data, BT463_IREG_WINDOW_TYPE_TABLE + i); data->window_type[i] = (BTRNREG(data) & 0xff); /* B0-7 */ data->window_type[i] |= (BTRNREG(data) & 0xff) << 8; /* B8-15 */ data->window_type[i] |= (BTRNREG(data) & 0xff) << 16; /* B16-23 */ } } #endif inline void bt463_wraddr(data, ireg) struct bt463data *data; u_int16_t ireg; { data->ramdac_wr(data->cookie, BT463_REG_ADDR_LOW, ireg & 0xff); data->ramdac_wr(data->cookie, BT463_REG_ADDR_HIGH, (ireg >> 8) & 0xff); } void bt463_update(p) void *p; { struct bt463data *data = (struct bt463data *)p; int i, v; if (console_data != NULL) { /* The cookie passed in from sched_update is incorrect. Use the * right one. */ data = console_data; } v = data->changed; /* The Bt463 won't accept window type data except during a blanking * interval, so we do this early in the interrupt. * Blanking the screen might also be a good idea, but it can cause * unpleasant flashing and is hard to do from this side of the * ramdac interface. */ if (v & DATA_WTYPE_CHANGED) { /* spit out the window type data */ for (i = 0; i < BT463_NWTYPE_ENTRIES; i++) { bt463_wraddr(data, BT463_IREG_WINDOW_TYPE_TABLE + i); BTWNREG(data, (data->window_type[i]) & 0xff); /* B0-7 */ BTWNREG(data, (data->window_type[i] >> 8) & 0xff); /* B8-15 */ BTWNREG(data, (data->window_type[i] >> 16) & 0xff); /* B16-23 */ } } if (v & DATA_CURCMAP_CHANGED) { bt463_wraddr(data, BT463_IREG_CURSOR_COLOR_0); /* spit out the cursor data */ for (i = 0; i < 2; i++) { BTWNREG(data, data->curcmap_r[i]); BTWNREG(data, data->curcmap_g[i]); BTWNREG(data, data->curcmap_b[i]); } } if (v & DATA_CMAP_CHANGED) { bt463_wraddr(data, BT463_IREG_CPALETTE_RAM); /* spit out the colormap data */ for (i = 0; i < BT463_NCMAP_ENTRIES; i++) { data->ramdac_wr(data->cookie, BT463_REG_CMAP_DATA, data->cmap_r[i]); data->ramdac_wr(data->cookie, BT463_REG_CMAP_DATA, data->cmap_g[i]); data->ramdac_wr(data->cookie, BT463_REG_CMAP_DATA, data->cmap_b[i]); } } data->changed = 0; } int bt463_set_cursor (rc, cur) struct ramdac_cookie *rc; struct wsdisplay_cursor *cur; { struct bt463data *data = (struct bt463data *)rc; return tga_builtin_set_cursor(data->cookie, cur); } int bt463_get_cursor (rc, cur) struct ramdac_cookie *rc; struct wsdisplay_cursor *cur; { struct bt463data *data = (struct bt463data *)rc; return tga_builtin_get_cursor(data->cookie, cur); } int bt463_set_curpos (rc, cur) struct ramdac_cookie *rc; struct wsdisplay_curpos *cur; { struct bt463data *data = (struct bt463data *)rc; return tga_builtin_set_curpos(data->cookie, cur); } int bt463_get_curpos (rc, cur) struct ramdac_cookie *rc; struct wsdisplay_curpos *cur; { struct bt463data *data = (struct bt463data *)rc; return tga_builtin_get_curpos(data->cookie, cur); } int bt463_get_curmax (rc, cur) struct ramdac_cookie *rc; struct wsdisplay_curpos *cur; { struct bt463data *data = (struct bt463data *)rc; return tga_builtin_get_curmax(data->cookie, cur); }