1 /* $NetBSD: gendiofb.c,v 1.1 2011/02/12 05:08:40 tsutsui Exp $ */
2 /* $OpenBSD: tvrx.c,v 1.1 2006/04/14 21:05:43 miod Exp $ */
3
4 /*
5 * Copyright (c) 2006, Miodrag Vallat.
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 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 *
29 */
30
31 /*
32 * dumb graphics routines for frame buffer on HP362 and HP382 based on tvrx.c
33 */
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/conf.h>
38 #include <sys/device.h>
39 #include <sys/proc.h>
40 #include <sys/ioctl.h>
41 #include <sys/bus.h>
42 #include <sys/cpu.h>
43
44 #include <machine/autoconf.h>
45
46 #include <hp300/dev/dioreg.h>
47 #include <hp300/dev/diovar.h>
48 #include <hp300/dev/diodevs.h>
49
50 #include <dev/cons.h>
51
52 #include <dev/wscons/wsconsio.h>
53 #include <dev/wscons/wsdisplayvar.h>
54 #include <dev/rasops/rasops.h>
55
56 #include <hp300/dev/diofbreg.h>
57 #include <hp300/dev/diofbvar.h>
58
59 struct gendiofb_softc {
60 device_t sc_dev;
61 struct diofb *sc_fb;
62 struct diofb sc_fb_store;
63 int sc_scode;
64 };
65
66 static int gendiofb_match(device_t, cfdata_t, void *);
67 static void gendiofb_attach(device_t, device_t, void *);
68
69 CFATTACH_DECL_NEW(gendiofb, sizeof(struct gendiofb_softc),
70 gendiofb_match, gendiofb_attach, NULL, NULL);
71
72 static int gendiofb_reset(struct diofb *, int, struct diofbreg *);
73
74 static int gendiofb_ioctl(void *, void *, u_long, void *, int, struct lwp *);
75
76 static struct wsdisplay_accessops gendiofb_accessops = {
77 gendiofb_ioctl,
78 diofb_mmap,
79 diofb_alloc_screen,
80 diofb_free_screen,
81 diofb_show_screen,
82 NULL, /* load_font */
83 };
84
85 /*
86 * Attachment glue
87 */
88
89 static int
gendiofb_match(device_t parent,cfdata_t cf,void * aux)90 gendiofb_match(device_t parent, cfdata_t cf, void *aux)
91 {
92 struct dio_attach_args *da = aux;
93
94 if (da->da_id == DIO_DEVICE_ID_FRAMEBUFFER) {
95 switch (da->da_secid) {
96 case DIO_DEVICE_SECID_A147xVGA:
97 case DIO_DEVICE_SECID_A1474MID:
98 return 1;
99 }
100 }
101
102 return 0;
103 }
104
105 static void
gendiofb_attach(device_t parent,device_t self,void * aux)106 gendiofb_attach(device_t parent, device_t self, void *aux)
107 {
108 struct gendiofb_softc *sc = device_private(self);
109 struct dio_attach_args *da = aux;
110 bus_space_handle_t bsh;
111 struct diofbreg *fbr;
112 bus_size_t size;
113
114 sc->sc_dev = self;
115 sc->sc_scode = da->da_scode;
116 if (sc->sc_scode == conscode) {
117 fbr = (struct diofbreg *)conaddr; /* already mapped */
118 sc->sc_fb = &diofb_cn;
119 } else {
120 sc->sc_fb = &sc->sc_fb_store;
121 size = da->da_size;
122 if (size > DIOII_DEVSIZE) /* XXX */
123 size = DIOII_DEVSIZE;
124 if (bus_space_map(da->da_bst, da->da_addr, size, 0,
125 &bsh)) {
126 aprint_error(": can't map framebuffer\n");
127 return;
128 }
129 fbr = bus_space_vaddr(da->da_bst, bsh);
130 if (gendiofb_reset(sc->sc_fb, sc->sc_scode, fbr) != 0) {
131 aprint_error(": failed to reset\n");
132 return;
133 }
134 }
135
136 diofb_end_attach(self, &gendiofb_accessops, sc->sc_fb,
137 sc->sc_scode == conscode, NULL);
138 }
139
140 /*
141 * Initialize hardware and display routines.
142 */
143 static int
gendiofb_reset(struct diofb * fb,int scode,struct diofbreg * fbr)144 gendiofb_reset(struct diofb *fb, int scode, struct diofbreg *fbr)
145 {
146 int rc;
147 struct rasops_info *ri = &fb->ri;
148
149 if ((rc = diofb_fbinquire(fb, scode, fbr)) != 0)
150 return (rc);
151
152 /*
153 * We rely on the PROM to initialize the frame buffer in the mode
154 * we expect it: cleared, overlay plane enabled and accessible
155 * at the beginning of the video memory.
156 *
157 * This is NOT the mode we would end up by simply resetting the
158 * board.
159 */
160
161 ri->ri_depth = 8;
162 ri->ri_stride = (fb->fbwidth * ri->ri_depth) / 8;
163
164 ri->ri_flg = RI_CENTER | RI_FULLCLEAR;
165 if (fb == &diofb_cn)
166 ri->ri_flg |= RI_NO_AUTO; /* XXX */
167 ri->ri_bits = fb->fbkva;
168 ri->ri_width = fb->dwidth;
169 ri->ri_height = fb->dheight;
170 ri->ri_hw = fb;
171
172 /*
173 * Ask for an unholy big display, rasops will trim this to more
174 * reasonable values.
175 */
176 rasops_init(ri, 160, 160);
177 ri->ri_flg |= RI_FORCEMONO; /* no colormap */
178
179 diofb_resetcmap(fb);
180
181 fb->wsd.name = fb->wsdname;
182 fb->wsd.ncols = ri->ri_cols;
183 fb->wsd.nrows = ri->ri_rows;
184 fb->wsd.textops = &ri->ri_ops;
185 fb->wsd.fontwidth = ri->ri_font->fontwidth;
186 fb->wsd.fontheight = ri->ri_font->fontheight;
187 fb->wsd.capabilities = ri->ri_caps;
188 strlcpy(fb->wsdname, "std", sizeof(fb->wsdname));
189
190 return 0;
191 }
192
193 static int
gendiofb_ioctl(void * v,void * vs,u_long cmd,void * data,int flags,struct lwp * l)194 gendiofb_ioctl(void *v, void *vs, u_long cmd, void *data, int flags,
195 struct lwp *l)
196 {
197 struct diofb *fb = v;
198 struct wsdisplay_fbinfo *wdf;
199
200 switch (cmd) {
201 case WSDISPLAYIO_GTYPE:
202 *(u_int *)data = WSDISPLAY_TYPE_UNKNOWN;
203 return 0;
204 case WSDISPLAYIO_SMODE:
205 fb->mapmode = *(u_int *)data;
206 return 0;
207 case WSDISPLAYIO_GINFO:
208 wdf = (void *)data;
209 wdf->width = fb->ri.ri_width;
210 wdf->height = fb->ri.ri_height;
211 wdf->depth = fb->ri.ri_depth;
212 wdf->cmsize = 0;
213 return 0;
214 case WSDISPLAYIO_LINEBYTES:
215 *(u_int *)data = fb->ri.ri_stride;
216 return 0;
217 case WSDISPLAYIO_GETCMAP:
218 case WSDISPLAYIO_PUTCMAP:
219 /* until color support is implemented */
220 return EPASSTHROUGH;
221 case WSDISPLAYIO_GVIDEO:
222 case WSDISPLAYIO_SVIDEO:
223 /* unsupported */
224 return EPASSTHROUGH;
225 }
226
227 return EPASSTHROUGH;
228 }
229
230
231 /*
232 * Console attachment
233 */
234
235 int
gendiofbcnattach(bus_space_tag_t bst,bus_addr_t addr,int scode)236 gendiofbcnattach(bus_space_tag_t bst, bus_addr_t addr, int scode)
237 {
238 bus_space_handle_t bsh;
239 void *va;
240 struct diofbreg *fbr;
241 struct diofb *fb = &diofb_cn;
242 bus_size_t size;
243
244 if (bus_space_map(bst, addr, PAGE_SIZE, 0, &bsh))
245 return 1;
246 va = bus_space_vaddr(bst, bsh);
247 fbr = va;
248 if (badaddr(va) ||
249 fbr->id != GRFHWID ||
250 (fbr->fbid != DIO_DEVICE_SECID_A1474MID &&
251 fbr->fbid != DIO_DEVICE_SECID_A147xVGA)) {
252 bus_space_unmap(bst, bsh, PAGE_SIZE);
253 return 1;
254 }
255
256 size = DIO_SIZE(scode, va);
257 if (size > DIOII_DEVSIZE) /* XXX */
258 size = DIOII_DEVSIZE;
259
260 bus_space_unmap(bst, bsh, PAGE_SIZE);
261 if (bus_space_map(bst, addr, size, 0, &bsh))
262 return 1;
263 va = bus_space_vaddr(bst, bsh);
264
265 /*
266 * Initialize the framebuffer hardware.
267 */
268 conscode = scode;
269 conaddr = va;
270 gendiofb_reset(fb, conscode, (struct diofbreg *)conaddr);
271
272 /*
273 * Initialize the terminal emulator.
274 */
275 diofb_cnattach(fb);
276 return 0;
277 }
278