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Diffstat (limited to 'chips/fb_misc.c')
-rw-r--r-- | chips/fb_misc.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/chips/fb_misc.c b/chips/fb_misc.c new file mode 100644 index 0000000..3a99dcd --- /dev/null +++ b/chips/fb_misc.c @@ -0,0 +1,242 @@ +/* + * 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 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 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) |