Annotation of sys/arch/mac68k/dev/grf_iv.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: grf_iv.c,v 1.41 2006/03/13 22:35:17 miod Exp $ */
2: /* $NetBSD: grf_iv.c,v 1.17 1997/02/20 00:23:27 scottr Exp $ */
3:
4: /*
5: * Copyright (C) 1998 Scott Reynolds
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. The name of the author may not be used to endorse or promote products
17: * derived from this software without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29: */
30: /*
31: * Copyright (c) 1995 Allen Briggs. All rights reserved.
32: *
33: * Redistribution and use in source and binary forms, with or without
34: * modification, are permitted provided that the following conditions
35: * are met:
36: * 1. Redistributions of source code must retain the above copyright
37: * notice, this list of conditions and the following disclaimer.
38: * 2. Redistributions in binary form must reproduce the above copyright
39: * notice, this list of conditions and the following disclaimer in the
40: * documentation and/or other materials provided with the distribution.
41: * 3. All advertising materials mentioning features or use of this software
42: * must display the following acknowledgement:
43: * This product includes software developed by Allen Briggs.
44: * 4. The name of the author may not be used to endorse or promote products
45: * derived from this software without specific prior written permission.
46: *
47: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
48: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
50: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
51: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
52: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
53: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
54: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
55: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
56: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
57: */
58:
59: /*
60: * Graphics display driver for the Macintosh internal video for machines
61: * that don't map it into a fake nubus card.
62: */
63:
64: #include <sys/param.h>
65: #include <sys/device.h>
66: #include <sys/systm.h>
67: #include <sys/malloc.h>
68:
69: #include <machine/autoconf.h>
70: #include <machine/bus.h>
71: #include <machine/cpu.h>
72: #include <machine/viareg.h>
73:
74: #include <uvm/uvm_extern.h>
75:
76: #include <mac68k/dev/nubus.h>
77: #include <mac68k/dev/obiovar.h>
78:
79: #include <dev/wscons/wsdisplayvar.h>
80: #include <dev/rasops/rasops.h>
81: #include <mac68k/dev/macfbvar.h>
82:
83: extern u_int32_t mac68k_vidphys;
84: extern u_int32_t mac68k_vidlen;
85: extern long videoaddr;
86: extern long videorowbytes;
87: extern long videobitdepth;
88: extern u_long videosize;
89:
90: int macfb_obio_match(struct device *, void *, void *);
91: void macfb_obio_attach(struct device *, struct device *, void *);
92:
93: struct cfattach macfb_obio_ca = {
94: sizeof(struct macfb_softc), macfb_obio_match, macfb_obio_attach
95: };
96:
97: #define DAFB_BASE 0xf9000000
98: #define DAFB_CONTROL_BASE 0xf9800000
99: #define DAFB_CMAP_BASE 0xf9800200
100: #define CIVIC_BASE 0x50100000
101: #define CIVIC_CONTROL_BASE 0x50036000
102: #define VALKYRIE_BASE 0xf9000000
103: #define VALKYRIE_CONTROL_BASE 0x50f2a000
104:
105: void dafb_setcolor(void *, u_int, u_int);
106:
107: int
108: macfb_obio_match(struct device *parent, void *vcf, void *aux)
109: {
110: struct obio_attach_args *oa = (struct obio_attach_args *)aux;
111: bus_space_handle_t bsh;
112: static int found;
113:
114: if (found != 0)
115: return (0);
116:
117: found = 1;
118:
119: switch (current_mac_model->class) {
120: case MACH_CLASSQ2:
121: if (current_mac_model->machineid != MACH_MACLC575)
122: break;
123:
124: /*
125: * Note: the only system in this class that does not have
126: * the Valkyrie chip -- at least, that we know of -- is
127: * the Performa/LC 57x series. This system has a version
128: * of the DAFB controller, instead.
129: *
130: * If this assumption proves false, we'll have to be more
131: * intelligent here.
132: */
133: /*FALLTHROUGH*/
134: case MACH_CLASSQ:
135: /*
136: * Assume DAFB for all of these, unless we can't
137: * access the memory.
138: */
139: if (bus_space_map(oa->oa_tag, DAFB_CONTROL_BASE, 0x120, 0,
140: &bsh) != 0)
141: return (0);
142:
143: if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0x1c, 4) == 0 ||
144: mac68k_bus_space_probe(oa->oa_tag, bsh, 0x104, 4) == 0)
145: found = 0;
146:
147: bus_space_unmap(oa->oa_tag, bsh, 0x120);
148: break;
149: case MACH_CLASSAV:
150: break;
151: case MACH_CLASSIIci:
152: case MACH_CLASSIIsi:
153: if (mac68k_vidlen == 0 ||
154: (via2_reg(rMonitor) & RBVMonitorMask) == RBVMonIDNone)
155: found = 0;
156: break;
157: default:
158: if (mac68k_vidlen == 0)
159: found = 0;
160: break;
161: }
162:
163: return (found);
164: }
165:
166: void
167: macfb_obio_attach(struct device *parent, struct device *self, void *aux)
168: {
169: struct obio_attach_args *oa = (struct obio_attach_args *) aux;
170: struct macfb_softc *sc = (struct macfb_softc *)self;
171: u_long length;
172: u_int32_t vbase1, vbase2;
173: struct macfb_devconfig *dc;
174:
175: sc->card_id = 0;
176: sc->sc_tag = oa->oa_tag;
177:
178: dc = malloc(sizeof(*dc), M_DEVBUF, M_WAITOK);
179: bzero(dc, sizeof(*dc));
180:
181: switch (current_mac_model->class) {
182: case MACH_CLASSQ2:
183: if (current_mac_model->machineid != MACH_MACLC575) {
184: sc->sc_basepa = VALKYRIE_BASE;
185: length = 0x00100000; /* 1MB */
186:
187: if (sc->sc_basepa <= mac68k_vidphys &&
188: mac68k_vidphys < (sc->sc_basepa + length))
189: sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa;
190: else
191: sc->sc_fbofs = 0;
192:
193: #ifdef DEBUG
194: printf(" @ %lx", sc->sc_basepa + sc->sc_fbofs);
195: #endif
196:
197: if (bus_space_map(sc->sc_tag, VALKYRIE_CONTROL_BASE,
198: 0x40, 0, &sc->sc_regh) != 0) {
199: printf(": can't map Valkyrie registers\n");
200: free(dc, M_DEVBUF);
201: return;
202: }
203: /* Disable interrupts */
204: bus_space_write_1(sc->sc_tag, sc->sc_regh, 0x18, 0x1);
205: bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x40);
206:
207: printf(": Valkyrie\n");
208: break;
209: }
210: /*
211: * Note: the only system in this class that does not have
212: * the Valkyrie chip -- at least, that we know of -- is
213: * the Performa/LC 57x series. This system has a version
214: * of the DAFB controller, instead.
215: *
216: * If this assumption proves false, we'll have to be more
217: * intelligent here.
218: */
219: /*FALLTHROUGH*/
220: case MACH_CLASSQ:
221: if (bus_space_map(sc->sc_tag, DAFB_CONTROL_BASE, 0x120, 0,
222: &sc->sc_regh)) {
223: printf(": can't map DAFB registers\n");
224: free(dc, M_DEVBUF);
225: return;
226: }
227:
228: sc->sc_basepa = DAFB_BASE;
229: length = 0x00100000; /* 1MB */
230:
231: /* Compute the current frame buffer offset */
232: vbase1 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x0) & 0xfff;
233:
234: /*
235: * XXX The following exists because the DAFB v7 in these
236: * systems doesn't return reasonable values to use for fbofs.
237: * Ken'ichi Ishizaka gets credit for this hack. (sar 19990426)
238: * (Does this get us the correct result for _all_ DAFB-
239: * equipped systems and monitor combinations? It seems
240: * possible, if not likely...)
241: */
242: switch (current_mac_model->machineid) {
243: case MACH_MACLC475:
244: case MACH_MACLC475_33:
245: case MACH_MACLC575:
246: case MACH_MACQ605:
247: case MACH_MACQ605_33:
248: vbase1 &= 0x3f;
249: break;
250: }
251: vbase2 = bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x4) & 0xf;
252: sc->sc_fbofs = (vbase1 << 9) | (vbase2 << 5);
253:
254: #ifdef DEBUG
255: printf(" @ %lx", sc->sc_basepa + sc->sc_fbofs);
256: #endif
257:
258: /* Disable interrupts */
259: bus_space_write_4(sc->sc_tag, sc->sc_regh, 0x104, 0);
260:
261: /* Clear any pending interrupts */
262: bus_space_write_4(sc->sc_tag, sc->sc_regh, 0x10C, 0);
263: bus_space_write_4(sc->sc_tag, sc->sc_regh, 0x110, 0);
264: bus_space_write_4(sc->sc_tag, sc->sc_regh, 0x114, 0);
265:
266: printf(": DAFB, monitor sense %x\n",
267: (bus_space_read_4(sc->sc_tag, sc->sc_regh, 0x1c) & 0x7));
268:
269: bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x120);
270:
271: if (bus_space_map(sc->sc_tag, DAFB_CMAP_BASE, 0x20, 0,
272: &sc->sc_regh) == 0) {
273: dc->dc_cmapregs = (vaddr_t)bus_space_vaddr(sc->sc_tag,
274: sc->sc_regh);
275: dc->dc_setcolor = dafb_setcolor;
276: }
277:
278: break;
279: case MACH_CLASSAV:
280: sc->sc_basepa = CIVIC_BASE;
281: length = 0x00200000; /* 2MB */
282:
283: if (sc->sc_basepa <= mac68k_vidphys &&
284: mac68k_vidphys < (sc->sc_basepa + length))
285: sc->sc_fbofs = mac68k_vidphys - sc->sc_basepa;
286: else
287: sc->sc_fbofs = 0;
288:
289: #ifdef DEBUG
290: printf(" @ %lx", sc->sc_basepa + sc->sc_fbofs);
291: #endif
292:
293: if (bus_space_map(sc->sc_tag, CIVIC_CONTROL_BASE, PAGE_SIZE,
294: 0, &sc->sc_regh) != 0) {
295: printf(": can't map Civic registers\n");
296: free(dc, M_DEVBUF);
297: return;
298: }
299:
300: /* Disable interrupts */
301: bus_space_write_1(sc->sc_tag, sc->sc_regh, 0x120, 0);
302: bus_space_unmap(sc->sc_tag, sc->sc_regh, PAGE_SIZE);
303:
304: printf(": Civic\n");
305: break;
306: case MACH_CLASSIIci:
307: case MACH_CLASSIIsi:
308: sc->sc_basepa = trunc_page(mac68k_vidphys);
309: sc->sc_fbofs = m68k_page_offset(mac68k_vidphys);
310: length = mac68k_vidlen + sc->sc_fbofs;
311:
312: #ifdef DEBUG
313: printf(" @ %lx: RBV", sc->sc_basepa + sc->sc_fbofs);
314: switch (via2_reg(rMonitor) & RBVMonitorMask) {
315: case RBVMonIDBWP:
316: printf(", 15\" monochrome portrait");
317: break;
318: case RBVMonIDRGB12:
319: printf(", 12\" color");
320: break;
321: case RBVMonIDRGB15:
322: printf(", 15\" color");
323: break;
324: case RBVMonIDStd:
325: printf(", Macintosh II");
326: break;
327: default:
328: printf(", unrecognized");
329: break;
330: }
331: printf(" display\n");
332: #else
333: printf(": RBV\n");
334: #endif
335:
336: break;
337: default:
338: sc->sc_basepa = trunc_page(mac68k_vidphys);
339: sc->sc_fbofs = m68k_page_offset(mac68k_vidphys);
340: length = mac68k_vidlen + sc->sc_fbofs;
341:
342: #ifdef DEBUG
343: printf(" @ %lx:", sc->sc_basepa + sc->sc_fbofs);
344: #endif
345: printf(": On-board video\n");
346: break;
347: }
348:
349: if (bus_space_map(sc->sc_tag, sc->sc_basepa, length, 0,
350: &sc->sc_handle)) {
351: printf("%s: failed to map video RAM\n", sc->sc_dev.dv_xname);
352: free(dc, M_DEVBUF);
353: return;
354: }
355:
356: if (sc->sc_basepa <= mac68k_vidphys &&
357: mac68k_vidphys < (sc->sc_basepa + length))
358: videoaddr =
359: (vaddr_t)bus_space_vaddr(sc->sc_tag, sc->sc_handle) +
360: sc->sc_fbofs;
361:
362: dc->dc_vaddr = (vaddr_t)bus_space_vaddr(sc->sc_tag, sc->sc_handle);
363: dc->dc_paddr = sc->sc_basepa;
364: dc->dc_offset = sc->sc_fbofs;
365: dc->dc_wid = videosize & 0xffff;
366: dc->dc_ht = (videosize >> 16) & 0xffff;
367: dc->dc_depth = videobitdepth;
368: dc->dc_rowbytes = videorowbytes;
369: dc->dc_size = dc->dc_ht * dc->dc_rowbytes;
370:
371: /* Perform common video attachment. */
372: macfb_attach_common(sc, dc);
373: }
374:
375: /*
376: * Basic indexed modes palette handling.
377: */
378:
379: void
380: dafb_setcolor(void *v, u_int start, u_int end)
381: {
382: struct macfb_devconfig *dc = v;
383: u_int i;
384: u_int8_t *c;
385:
386: c = dc->dc_cmap;
387:
388: /*
389: * DAFB can not start a colormap update at a color index different
390: * than zero, so we need to reprogram all slots below the requested
391: * range.
392: */
393: *(volatile u_int32_t *)(dc->dc_cmapregs) = 0;
394: for (i = 0; i < end; i++) {
395: *(volatile u_int8_t *)(dc->dc_cmapregs + 0x13) = *c++;
396: *(volatile u_int8_t *)(dc->dc_cmapregs + 0x13) = *c++;
397: *(volatile u_int8_t *)(dc->dc_cmapregs + 0x13) = *c++;
398: }
399: }
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