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1.1 root 1: /*
2: * Mach Operating System
3: * Copyright (c) 1991,1990,1989 Carnegie Mellon University
4: * All Rights Reserved.
5: *
6: * Permission to use, copy, modify and distribute this software and its
7: * documentation is hereby granted, provided that both the copyright
8: * notice and this permission notice appear in all copies of the
9: * software, derivative works or modified versions, and any portions
10: * thereof, and that both notices appear in supporting documentation.
11: *
12: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
13: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15: *
16: * Carnegie Mellon requests users of this software to return to
17: *
18: * Software Distribution Coordinator or [email protected]
19: * School of Computer Science
20: * Carnegie Mellon University
21: * Pittsburgh PA 15213-3890
22: *
23: * any improvements or extensions that they make and grant Carnegie Mellon
24: * the rights to redistribute these changes.
25: */
26: /*
27: * File: fb_misc.c
28: * Author: Alessandro Forin, Carnegie Mellon University
29: * Date: 7/91
30: *
31: * Driver for the PMAG-AA simple mono framebuffer
32: *
33: */
34:
35: #include <mfb.h>
36: #if (NMFB > 0)
37:
38: /*
39: * NOTE: This driver relies heavily on the pm one.
40: */
41:
42: #include <device/device_types.h>
43: #include <chips/screen_defs.h>
44: #include <chips/pm_defs.h>
45: typedef pm_softc_t fb_softc_t;
46:
47: #include <chips/bt455.h>
48:
49: /*
50: * Initialize color map, for kernel use
51: */
52: fb_init_colormap(sc)
53: screen_softc_t sc;
54: {
55: fb_softc_t *fb = (fb_softc_t*)sc->hw_state;
56: user_info_t *up = sc->up;
57: color_map_t Bg_Fg[2];
58: register int i;
59:
60: bt455_init_colormap( fb->vdac_registers );
61:
62: /* init bg/fg colors */
63: for (i = 0; i < 3; i++) {
64: up->dev_dep_2.pm.Bg_color[i] = 0x00;
65: up->dev_dep_2.pm.Fg_color[i] = 0xff;
66: }
67:
68: Bg_Fg[0].red = Bg_Fg[0].green = Bg_Fg[0].blue = 0x00;
69: Bg_Fg[1].red = Bg_Fg[1].green = Bg_Fg[1].blue = 0xff;
70: bt455_cursor_color( fb->vdac_registers, Bg_Fg);
71: }
72:
73: /*
74: * Large viz small cursor
75: */
76: fb_small_cursor_to_large(up, cursor)
77: user_info_t *up;
78: cursor_sprite_t cursor;
79: {
80: unsigned char *curbytes, *sprite;
81: int i;
82: /* Our cursor turns out mirrored, donno why */
83: static unsigned char mirror[256] = {
84: 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
85: 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
86: 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
87: 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
88: 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
89: 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
90: 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
91: 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
92: 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
93: 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
94: 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
95: 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
96: 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
97: 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
98: 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
99: 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
100: 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
101: 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
102: 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
103: 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
104: 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
105: 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
106: 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
107: 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
108: 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
109: 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
110: 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
111: 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
112: 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
113: 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
114: 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
115: 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
116: };
117:
118: /* Clear out old cursor */
119: bzero( up->dev_dep_2.pm.cursor_sprite,
120: sizeof(up->dev_dep_2.pm.cursor_sprite));
121:
122: /* small cursor is 32x2 bytes, image(fg) first then mask(bg) */
123: curbytes = (unsigned char *) cursor;
124:
125: /* we have even byte --> image, odd byte --> mask;
126: line size is 8 bytes instead of 2 */
127: sprite = (unsigned char *) up->dev_dep_2.pm.cursor_sprite;
128:
129: for (i = 0; i < 32; i += 2) {
130: *sprite++ = mirror[curbytes[i]]; /* fg */
131: *sprite++ = mirror[curbytes[i + 32]]; /* bg */
132: *sprite++ = mirror[curbytes[i + 1]]; /* fg */
133: *sprite++ = mirror[curbytes[i + 33]]; /* bg */
134: sprite += 12; /* skip rest of the line */
135: }
136: }
137:
138: /*
139: * Device-specific set status
140: */
141: fb_set_status(sc, flavor, status, status_count)
142: screen_softc_t sc;
143: int flavor;
144: dev_status_t status;
145: unsigned int status_count;
146: {
147: fb_softc_t *fb = (fb_softc_t*) sc->hw_state;
148:
149: switch (flavor) {
150:
151: case SCREEN_ADJ_MAPPED_INFO:
152: return pm_set_status(sc, flavor, status, status_count);
153:
154: case SCREEN_LOAD_CURSOR:
155:
156: if (status_count < sizeof(cursor_sprite_t)/sizeof(int))
157: return D_INVALID_SIZE;
158: fb_small_cursor_to_large(sc->up, (cursor_sprite_t*) status);
159:
160: /* Fall through */
161:
162: case SCREEN_LOAD_CURSOR_LONG: { /* 3max/3min only */
163:
164: sc->flags |= SCREEN_BEING_UPDATED;
165: bt431_cursor_sprite(fb->cursor_registers, sc->up->dev_dep_2.pm.cursor_sprite);
166: sc->flags &= ~SCREEN_BEING_UPDATED;
167:
168: break;
169: }
170:
171: case SCREEN_SET_CURSOR_COLOR: {
172: color_map_t c[2];
173: register cursor_color_t *cc = (cursor_color_t*) status;
174:
175: c[0].red = cc->Bg_rgb[0];
176: c[0].green = cc->Bg_rgb[1];
177: c[0].blue = cc->Bg_rgb[2];
178: c[1].red = cc->Fg_rgb[0];
179: c[1].green = cc->Fg_rgb[1];
180: c[1].blue = cc->Fg_rgb[2];
181:
182: sc->flags |= SCREEN_BEING_UPDATED;
183: bt455_cursor_color (fb->vdac_registers, c );
184: sc->flags &= ~SCREEN_BEING_UPDATED;
185:
186: break;
187: }
188:
189: case SCREEN_SET_CMAP_ENTRY: {
190: color_map_entry_t *e = (color_map_entry_t*) status;
191:
192: if (e->index < 8) { /* 8&9 are fg&bg, do not touch */
193: sc->flags |= SCREEN_BEING_UPDATED;
194: bt455_load_colormap_entry( fb->vdac_registers, e->index, &e->value);
195: sc->flags &= ~SCREEN_BEING_UPDATED;
196: }
197: break;
198: }
199:
200: default:
201: return D_INVALID_OPERATION;
202: }
203: return D_SUCCESS;
204: }
205:
206: /*
207: * Do what's needed when X exits
208: */
209: fb_soft_reset(sc)
210: screen_softc_t sc;
211: {
212: fb_softc_t *fb = (fb_softc_t*) sc->hw_state;
213: user_info_t *up = sc->up;
214: extern cursor_sprite_t bt431_default_cursor;
215:
216: /*
217: * Restore params in mapped structure
218: */
219: pm_init_screen_params(sc,up);
220: up->row = up->max_row - 1;
221:
222: up->dev_dep_2.pm.x26 = 2; /* you do not want to know */
223: up->dev_dep_1.pm.x18 = (short*)2;
224:
225: /*
226: * Restore RAMDAC chip to default state, and init cursor
227: */
228: bt455_init(fb->vdac_registers);
229: bt431_init(fb->cursor_registers);
230:
231: /*
232: * Load kernel's cursor sprite
233: */
234: bt431_cursor_sprite(fb->cursor_registers, bt431_default_cursor);
235:
236: /*
237: * Color map and cursor color
238: */
239: fb_init_colormap(sc);
240: }
241:
242: #endif (NMFB > 0)
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