Annotation of src/sys/arch/macppc/dev/valkyriefb.c, Revision 1.3
1.3 ! macallan 1: /* $NetBSD: valkyriefb.c,v 1.2 2012/05/23 21:46:17 macallan Exp $ */
1.1 macallan 2:
3: /*
4: * Copyright (c) 2012 Michael Lorenz
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: *
16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26: */
27:
28: /*
29: * A console driver for Apple's Valkyrie onboard video controller, found in
30: * for example the Performa 6360
31: * This should be easy enough to adapt to mac68k but I don't have the hardware
32: */
33:
34: #include <sys/cdefs.h>
1.3 ! macallan 35: __KERNEL_RCSID(0, "$NetBSD: valkyriefb.c,v 1.2 2012/05/23 21:46:17 macallan Exp $");
1.1 macallan 36:
37: #include <sys/param.h>
38: #include <sys/systm.h>
39: #include <sys/kernel.h>
40: #include <sys/device.h>
41:
42: #include <dev/ofw/openfirm.h>
43:
44: #include <machine/autoconf.h>
45:
46: #include <dev/wscons/wsdisplayvar.h>
47: #include <dev/wscons/wsconsio.h>
48: #include <dev/wsfont/wsfont.h>
49: #include <dev/rasops/rasops.h>
50: #include <dev/wscons/wsdisplay_vconsvar.h>
51:
52: #include <dev/videomode/videomode.h>
53:
54: #include <arch/macppc/dev/valkyriefbreg.h>
55: #include <arch/macppc/dev/videopllvar.h>
56:
57: #include "opt_wsemul.h"
58: #include "opt_valkyriefb.h"
59:
60: #include "videopll.h"
61: #if NVIDEOPLL < 1
62: #error "valkyriefb requires videopll at iic"
63: #endif
64:
65: struct valkyriefb_softc {
66: device_t sc_dev;
67: int sc_node;
68: uint8_t *sc_base;
1.2 macallan 69: uint8_t *sc_fbaddr;
1.1 macallan 70:
71: int sc_depth;
72: int sc_width, sc_height, sc_linebytes;
73: const struct videomode *sc_videomode;
74: uint8_t sc_modereg;
75:
76: int sc_mode;
77: uint32_t sc_bg;
78:
79: u_char sc_cmap_red[256];
80: u_char sc_cmap_green[256];
81: u_char sc_cmap_blue[256];
82:
83: struct vcons_data vd;
84: };
85:
86: struct valkyriefb_mode {
87: int width;
88: int height;
89: uint8_t mode;
90: };
91:
92: /*
93: * Translate screen resolutions to values for Valkyrie's mode register.
94: * These numbers seem to roughly correspond to MacOS video mode numbers
95: * there are many numbers that result in the same resolution which in MacOS
96: * only differ by the display refresh rate, which isn't set by Valkyrie at
97: * all, instead there's a PLL chip hooked to cuda's i2c bus. It doesn't seem
98: * to matter which number we use as long as the resolution is right and we
99: * program the PLL for the right pixel clock
100: */
101: static struct valkyriefb_mode modetab[] = {
102: { 640, 480, 6 },
103: { 800, 600, 12 },
104: { 832, 624, 9 },
105: { 1024, 768, 14},
106: };
107:
108: static struct vcons_screen valkyriefb_console_screen;
109:
110: static int valkyriefb_match(device_t, cfdata_t, void *);
111: static void valkyriefb_attach(device_t, device_t, void *);
112: static int valkyriefb_init(device_t);
113: static int valkyriefb_set_mode(struct valkyriefb_softc *,
114: const struct videomode *, int);
115:
116: CFATTACH_DECL_NEW(valkyriefb, sizeof(struct valkyriefb_softc),
117: valkyriefb_match, valkyriefb_attach, NULL, NULL);
118:
119: struct wsscreen_descr valkyriefb_defaultscreen = {
120: "default",
121: 0, 0,
122: NULL,
123: 8, 16,
124: WSSCREEN_WSCOLORS | WSSCREEN_HILIT,
125: NULL,
126: };
127:
128: const struct wsscreen_descr *_valkyriefb_scrlist[] = {
129: &valkyriefb_defaultscreen,
130: /* XXX other formats, graphics screen? */
131: };
132:
133: struct wsscreen_list valkyriefb_screenlist = {
1.3 ! macallan 134: sizeof(_valkyriefb_scrlist) / sizeof(struct wsscreen_descr *),
! 135: _valkyriefb_scrlist
1.1 macallan 136: };
137:
138: static int valkyriefb_ioctl(void *, void *, u_long, void *, int,
139: struct lwp *);
140: static paddr_t valkyriefb_mmap(void *, void *, off_t, int);
141:
142: static void valkyriefb_init_screen(void *, struct vcons_screen *, int,
143: long *);
144:
145:
146: struct wsdisplay_accessops valkyriefb_accessops = {
147: valkyriefb_ioctl,
148: valkyriefb_mmap,
149: NULL,
150: NULL,
151: NULL,
152: NULL, /* load_font */
153: NULL, /* polls */
154: NULL, /* scroll */
155: };
156:
157: static inline void
158: valkyriefb_write_reg(struct valkyriefb_softc *sc, int reg, uint8_t val)
159: {
160: *(sc->sc_base + VAL_REGS_OFFSET + reg) = val;
161: __asm("eieio; sync;");
162: }
163:
164: static inline uint8_t
165: valkyriefb_read_reg(struct valkyriefb_softc *sc, int reg)
166: {
167: return *(sc->sc_base + VAL_REGS_OFFSET + reg);
168: }
169:
170: static void
171: valkyriefb_write_cmap(struct valkyriefb_softc *sc,
172: int reg, uint8_t r, uint8_t g, uint8_t b)
173: {
174: *(sc->sc_base + VAL_CMAP_OFFSET + VAL_CMAP_ADDR) = reg;
175: __asm("eieio; sync;");
176: *(sc->sc_base + VAL_CMAP_OFFSET + VAL_CMAP_LUT) = r;
177: __asm("eieio; sync;");
178: *(sc->sc_base + VAL_CMAP_OFFSET + VAL_CMAP_LUT) = g;
179: __asm("eieio; sync;");
180: *(sc->sc_base + VAL_CMAP_OFFSET + VAL_CMAP_LUT) = b;
181: __asm("eieio; sync;");
182: }
183:
184: static int
185: valkyriefb_match(device_t parent, cfdata_t cf, void *aux)
186: {
187: struct confargs *ca = aux;
188:
189: if (strcmp(ca->ca_name, "valkyrie") != 0)
190: return 0;
191: return 1;
192: }
193:
194: static void
195: valkyriefb_attach(device_t parent, device_t self, void *aux)
196: {
197: struct valkyriefb_softc *sc = device_private(self);
198: struct confargs *ca = aux;
199:
200: sc->sc_dev = self;
201: sc->sc_node = ca->ca_node;
202:
203: aprint_normal(" address 0x%08x\n", ca->ca_reg[0]);
204: aprint_verbose_dev(sc->sc_dev, "waiting for videopll...\n");
205: sc->sc_base = (uint8_t *)ca->ca_reg[0];
206: #ifdef VALKYRIEFB_DEBUG
207: for (i = 0; i < 0x40; i += 8) {
1.3 ! macallan 208: aprint_error_dev(sc->sc_dev, "%02x: %02x\n", i,
! 209: valkyriefb_read_reg(sc, i));
1.1 macallan 210: }
211: #endif
212: config_finalize_register(sc->sc_dev, valkyriefb_init);
1.2 macallan 213: sc->sc_fbaddr = (uint8_t *)(sc->sc_base + 0x1000);
1.1 macallan 214: }
215:
216: static int
217: valkyriefb_init(device_t self)
218: {
219: struct valkyriefb_softc *sc = device_private(self);
220: const struct videomode *mode;
221: struct rasops_info *ri;
222: prop_dictionary_t dict;
223: struct wsemuldisplaydev_attach_args aa;
224: bool console = FALSE;
225: long defattr;
226:
227: mode = pick_mode_by_ref(800, 600, 60);
228: if (mode == NULL)
229: return 0;
230:
231: valkyriefb_set_mode(sc, mode, 8);
232:
1.3 ! macallan 233: vcons_init(&sc->vd, sc, &valkyriefb_defaultscreen,
! 234: &valkyriefb_accessops);
1.1 macallan 235: sc->vd.init_screen = valkyriefb_init_screen;
236:
237: dict = device_properties(sc->sc_dev);
238: prop_dictionary_get_bool(dict, "is_console", &console);
239:
240: ri = &valkyriefb_console_screen.scr_ri;
241: vcons_init_screen(&sc->vd, &valkyriefb_console_screen, 1, &defattr);
1.2 macallan 242: memset(sc->sc_base + 0x1000, ri->ri_devcmap[(defattr >> 16) & 0xf],
243: sc->sc_width * sc->sc_linebytes);
1.1 macallan 244: valkyriefb_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
245:
246: valkyriefb_defaultscreen.textops = &ri->ri_ops;
247: valkyriefb_defaultscreen.capabilities = ri->ri_caps;
248: valkyriefb_defaultscreen.nrows = ri->ri_rows;
249: valkyriefb_defaultscreen.ncols = ri->ri_cols;
250: if (console) {
1.3 ! macallan 251: wsdisplay_cnattach(&valkyriefb_defaultscreen, ri, 0, 0,
! 252: defattr);
1.2 macallan 253: vcons_replay_msgbuf(&valkyriefb_console_screen);
1.1 macallan 254: }
255: aa.console = console;
256: aa.scrdata = &valkyriefb_screenlist;
257: aa.accessops = &valkyriefb_accessops;
258: aa.accesscookie = &sc->vd;
259:
260: config_found(self, &aa, wsemuldisplaydevprint);
261:
262: return 0;
263: }
264:
265: static int
266: valkyriefb_set_mode(struct valkyriefb_softc *sc,
267: const struct videomode *mode, int depth)
268: {
269: int i;
270: uint8_t modereg, tmp;
271:
272: /* first find the parameter for the mode register */
273: i = 0;
274: while ((i < __arraycount(modetab)) &&
275: (modetab[i].width != mode->hdisplay) &&
276: (modetab[i].height != mode->vdisplay))
277: i++;
1.3 ! macallan 278: if (i >= __arraycount(modetab)) {
! 279: aprint_error_dev(sc->sc_dev,
! 280: "Can't find a mode register value for %s\n", mode->name);
! 281: return EINVAL;
! 282: } else
1.1 macallan 283: modereg = modetab[i].mode;
284:
285: /* check if we have enough video memory */
286: if ((mode->hdisplay * mode->vdisplay * (depth >> 3)) > 0x100000) {
1.3 ! macallan 287: aprint_error_dev(sc->sc_dev, "Not enough video RAM for %s\n",
! 288: mode->name);
1.1 macallan 289: return EINVAL;
290: }
291:
292: /* reject depths other than 8 or 16 */
293: if ((depth != 8) && (depth != 16)) {
1.3 ! macallan 294: aprint_error_dev(sc->sc_dev,
! 295: "Depth [%d] is unsupported for %s\n", depth, mode->name);
1.1 macallan 296: return EINVAL;
297: }
298:
299: /* now start programming the chip */
300: valkyriefb_write_reg(sc, VAL_STATUS, 0);
301: delay(100);
302: valkyriefb_write_reg(sc, VAL_MODE, modereg | VAL_MODE_STOP);
303:
304: if (depth == 8) {
305: sc->sc_depth = 8;
306: valkyriefb_write_reg(sc, VAL_DEPTH, VAL_DEPTH_8);
307: for (i = 0; i < 256; i++) {
308: tmp = i & 0xe0;
309: /*
310: * replicate bits so 0xe0 maps to a red value of 0xff
311: * in order to make white look actually white
312: */
313: tmp |= (tmp >> 3) | (tmp >> 6);
314: sc->sc_cmap_red[i] = tmp;
315:
316: tmp = (i & 0x1c) << 3;
317: tmp |= (tmp >> 3) | (tmp >> 6);
318: sc->sc_cmap_green[i] = tmp;
319:
320: tmp = (i & 0x03) << 6;
321: tmp |= tmp >> 2;
322: tmp |= tmp >> 4;
323: sc->sc_cmap_blue[i] = tmp;
324:
325: valkyriefb_write_cmap(sc, i, sc->sc_cmap_red[i],
326: sc->sc_cmap_green[i], sc->sc_cmap_blue[i]);
327: }
328: } else if (depth == 16) {
329: sc->sc_depth = 16;
330: valkyriefb_write_reg(sc, VAL_DEPTH, VAL_DEPTH_16);
331: /* does the palette have any effect in 16bit? */
332: }
333:
334: videopll_set_freq(mode->dot_clock);
335: delay(100);
336: valkyriefb_write_reg(sc, VAL_MODE, modereg);
337:
338: sc->sc_modereg = modereg;
339: sc->sc_videomode = mode;
340: sc->sc_width = mode->hdisplay;
341: sc->sc_height = mode->vdisplay;
342: sc->sc_linebytes = mode->hdisplay * (sc->sc_depth >> 3);
343: aprint_normal_dev(sc->sc_dev, "switched to %d x %d in %d bit colour\n",
344: sc->sc_width, sc->sc_height, sc->sc_depth);
345: return 0;
346: }
347:
348: static int
349: valkyriefb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
350: struct lwp *l)
351: {
352: struct vcons_data *vd = v;
353: struct valkyriefb_softc *sc = vd->cookie;
354: struct wsdisplay_fbinfo *wdf;
355: struct vcons_screen *ms = vd->active;
356:
357: switch (cmd) {
358: case WSDISPLAYIO_GTYPE:
359: *(u_int *)data = WSDISPLAY_TYPE_VALKYRIE;
360: return 0;
361:
362: case WSDISPLAYIO_GINFO:
363: wdf = (void *)data;
364: wdf->height = ms->scr_ri.ri_height;
365: wdf->width = ms->scr_ri.ri_width;
366: wdf->depth = ms->scr_ri.ri_depth;
367: wdf->cmsize = 256;
368: return 0;
369: #if 0
370: case WSDISPLAYIO_GETCMAP:
371: return valkyriefb_getcmap(sc,
372: (struct wsdisplay_cmap *)data);
373:
374: case WSDISPLAYIO_PUTCMAP:
375: return valkyriefb_putcmap(sc,
376: (struct wsdisplay_cmap *)data);
377: #endif
378:
379: case WSDISPLAYIO_SMODE: {
380: int new_mode = *(int*)data;
381: if (new_mode != sc->sc_mode) {
382: sc->sc_mode = new_mode;
383: if (new_mode == WSDISPLAYIO_MODE_EMUL) {
384: vcons_redraw_screen(ms);
385: }
386: }
387: }
388: return 0;
389: }
390: return EPASSTHROUGH;
391: }
392:
393: static paddr_t
394: valkyriefb_mmap(void *v, void *vs, off_t offset, int prot)
395: {
396: struct vcons_data *vd = v;
397: struct valkyriefb_softc *sc = vd->cookie;
398: paddr_t pa;
399:
400: /* 'regular' framebuffer mmap()ing */
401: if (offset < 0x100000) {
402: pa = (paddr_t)(sc->sc_base + 0x1000 + offset);
403: return pa;
404: }
405: return -1;
406: }
407:
408: static void
409: valkyriefb_init_screen(void *cookie, struct vcons_screen *scr,
410: int existing, long *defattr)
411: {
412: struct valkyriefb_softc *sc = cookie;
413: struct rasops_info *ri = &scr->scr_ri;
414:
1.2 macallan 415: memset(ri, 0, sizeof(struct rasops_info));
1.1 macallan 416: ri->ri_depth = sc->sc_depth;
417: ri->ri_width = sc->sc_width;
418: ri->ri_height = sc->sc_height;
419: ri->ri_stride = sc->sc_linebytes;
420: ri->ri_flg = RI_CENTER | RI_8BIT_IS_RGB | RI_ENABLE_ALPHA;
1.2 macallan 421: ri->ri_bits = sc->sc_fbaddr;
422:
1.1 macallan 423: scr->scr_flags |= VCONS_DONT_READ;
424:
425: rasops_init(ri, 0, 0);
426: ri->ri_caps = WSSCREEN_WSCOLORS;
427:
428: rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
429: sc->sc_width / ri->ri_font->fontwidth);
430:
431: ri->ri_hw = scr;
432: }
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