Gnu-Mach/chips/fb_misc.c - view

File: [GnuMach] / Gnu-Mach / chips / fb_misc.c
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs
Wed Sep 2 04:36:57 2020 UTC (5 years, 10 months ago) by root
Branches: MAIN, GNU
CVS tags: HEAD, GNUMach130, GNUMach120, GNUMach113, GNUMach112, GNUMach100

GNU Mach 1.0

/* * Mach Operating System * Copyright (c) 1991,1990,1989 Carnegie Mellon University * All Rights Reserved. * * 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 [email protected] * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* * File: fb_misc.c * Author: Alessandro Forin, Carnegie Mellon University * Date: 7/91 * * Driver for the PMAG-AA simple mono framebuffer * */ #include <mfb.h> #if (NMFB > 0) /* * NOTE: This driver relies heavily on the pm one. */ #include <device/device_types.h> #include <chips/screen_defs.h> #include <chips/pm_defs.h> typedef pm_softc_t fb_softc_t; #include <chips/bt455.h> /* * Initialize color map, for kernel use */ fb_init_colormap(sc) screen_softc_t sc; { fb_softc_t *fb = (fb_softc_t*)sc->hw_state; user_info_t *up = sc->up; color_map_t Bg_Fg[2]; register int i; bt455_init_colormap( fb->vdac_registers ); /* init bg/fg colors */ for (i = 0; i < 3; i++) { up->dev_dep_2.pm.Bg_color[i] = 0x00; up->dev_dep_2.pm.Fg_color[i] = 0xff; } Bg_Fg[0].red = Bg_Fg[0].green = Bg_Fg[0].blue = 0x00; Bg_Fg[1].red = Bg_Fg[1].green = Bg_Fg[1].blue = 0xff; bt455_cursor_color( fb->vdac_registers, Bg_Fg); } /* * Large viz small cursor */ fb_small_cursor_to_large(up, cursor) user_info_t *up; cursor_sprite_t cursor; { unsigned char *curbytes, *sprite; int i; /* Our cursor turns out mirrored, donno why */ static unsigned char mirror[256] = { 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff }; /* Clear out old cursor */ bzero( up->dev_dep_2.pm.cursor_sprite, sizeof(up->dev_dep_2.pm.cursor_sprite)); /* small cursor is 32x2 bytes, image(fg) first then mask(bg) */ curbytes = (unsigned char *) cursor; /* we have even byte --> image, odd byte --> mask; line size is 8 bytes instead of 2 */ sprite = (unsigned char *) up->dev_dep_2.pm.cursor_sprite; for (i = 0; i < 32; i += 2) { *sprite++ = mirror[curbytes[i]]; /* fg */ *sprite++ = mirror[curbytes[i + 32]]; /* bg */ *sprite++ = mirror[curbytes[i + 1]]; /* fg */ *sprite++ = mirror[curbytes[i + 33]]; /* bg */ sprite += 12; /* skip rest of the line */ } } /* * Device-specific set status */ fb_set_status(sc, flavor, status, status_count) screen_softc_t sc; int flavor; dev_status_t status; unsigned int status_count; { fb_softc_t *fb = (fb_softc_t*) sc->hw_state; switch (flavor) { case SCREEN_ADJ_MAPPED_INFO: return pm_set_status(sc, flavor, status, status_count); case SCREEN_LOAD_CURSOR: if (status_count < sizeof(cursor_sprite_t)/sizeof(int)) return D_INVALID_SIZE; fb_small_cursor_to_large(sc->up, (cursor_sprite_t*) status); /* Fall through */ case SCREEN_LOAD_CURSOR_LONG: { /* 3max/3min only */ sc->flags |= SCREEN_BEING_UPDATED; bt431_cursor_sprite(fb->cursor_registers, sc->up->dev_dep_2.pm.cursor_sprite); sc->flags &= ~SCREEN_BEING_UPDATED; break; } case SCREEN_SET_CURSOR_COLOR: { color_map_t c[2]; register cursor_color_t *cc = (cursor_color_t*) status; c[0].red = cc->Bg_rgb[0]; c[0].green = cc->Bg_rgb[1]; c[0].blue = cc->Bg_rgb[2]; c[1].red = cc->Fg_rgb[0]; c[1].green = cc->Fg_rgb[1]; c[1].blue = cc->Fg_rgb[2]; sc->flags |= SCREEN_BEING_UPDATED; bt455_cursor_color (fb->vdac_registers, c ); sc->flags &= ~SCREEN_BEING_UPDATED; break; } case SCREEN_SET_CMAP_ENTRY: { color_map_entry_t *e = (color_map_entry_t*) status; if (e->index < 8) { /* 8&9 are fg&bg, do not touch */ sc->flags |= SCREEN_BEING_UPDATED; bt455_load_colormap_entry( fb->vdac_registers, e->index, &e->value); sc->flags &= ~SCREEN_BEING_UPDATED; } break; } default: return D_INVALID_OPERATION; } return D_SUCCESS; } /* * Do what's needed when X exits */ fb_soft_reset(sc) screen_softc_t sc; { fb_softc_t *fb = (fb_softc_t*) sc->hw_state; user_info_t *up = sc->up; extern cursor_sprite_t bt431_default_cursor; /* * Restore params in mapped structure */ pm_init_screen_params(sc,up); up->row = up->max_row - 1; up->dev_dep_2.pm.x26 = 2; /* you do not want to know */ up->dev_dep_1.pm.x18 = (short*)2; /* * Restore RAMDAC chip to default state, and init cursor */ bt455_init(fb->vdac_registers); bt431_init(fb->cursor_registers); /* * Load kernel's cursor sprite */ bt431_cursor_sprite(fb->cursor_registers, bt431_default_cursor); /* * Color map and cursor color */ fb_init_colormap(sc); } #endif (NMFB > 0)

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