1/*	$NetBSD: gten.c,v 1.24 2021/08/07 16:19:03 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas <matt@3am-software.com>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: gten.c,v 1.24 2021/08/07 16:19:03 thorpej Exp $");
34
35#include <sys/param.h>
36#include <sys/buf.h>
37#include <sys/conf.h>
38#include <sys/device.h>
39#include <sys/ioctl.h>
40#include <sys/kernel.h>
41#include <sys/kmem.h>
42#include <sys/systm.h>
43
44#include <uvm/uvm_extern.h>
45
46#include <dev/pci/pcidevs.h>
47#include <dev/pci/pcireg.h>
48#include <dev/pci/pcivar.h>
49
50#include <dev/wscons/wsconsio.h>
51#include <dev/wscons/wsdisplayvar.h>
52#include <dev/rasops/rasops.h>
53
54#include <sys/bus.h>
55#include <machine/gtenvar.h>
56
57static	int	gten_match(device_t, cfdata_t, void *);
58static	void	gten_attach(device_t, device_t, void *);
59static	int	gten_print(void *, const char *);
60
61CFATTACH_DECL_NEW(gten, sizeof(struct gten_softc),
62    gten_match, gten_attach, NULL, NULL);
63
64static struct rasops_info gten_console_ri;
65static pcitag_t gten_console_pcitag;
66
67static struct wsscreen_descr gten_stdscreen = {
68	"std",
69	0, 0,
70	0,
71	0, 0,
72	WSSCREEN_REVERSE
73};
74
75static const struct wsscreen_descr *_gten_scrlist[] = {
76	&gten_stdscreen,
77	/* XXX other formats, graphics screen? */
78};
79
80static struct wsscreen_list gten_screenlist = {
81	sizeof(_gten_scrlist) / sizeof(struct wsscreen_descr *), _gten_scrlist
82};
83
84static int gten_ioctl(void *, void *, u_long, void *, int, struct proc *);
85static paddr_t gten_mmap(void *, void *, off_t, int);
86static int gten_alloc_screen(void *, const struct wsscreen_descr *,
87			     void **, int *, int *, long *);
88static void gten_free_screen(void *, void *);
89static int gten_show_screen(void *, void *, int,
90			    void (*) (void *, int, int), void *);
91
92static struct wsdisplay_accessops gten_accessops = {
93	gten_ioctl,
94	gten_mmap,
95	gten_alloc_screen,
96	gten_free_screen,
97	gten_show_screen,
98	0 /* load_font */
99};
100
101static void gten_common_init(struct rasops_info *);
102static int gten_getcmap(struct gten_softc *, struct wsdisplay_cmap *);
103static int gten_putcmap(struct gten_softc *, struct wsdisplay_cmap *);
104
105#define	GTEN_VRAM_OFFSET	0xf00000
106
107static int
108gten_match(device_t parent, cfdata_t match, void *aux)
109{
110	struct pci_attach_args *pa = aux;
111
112	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_WD &&
113	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_WD_90C)
114		return 2;
115
116	return 0;
117}
118
119static void
120gten_attach(device_t parent, device_t self, void *aux)
121{
122	struct gten_softc *gt = device_private(self);
123	struct pci_attach_args *pa = aux;
124	struct wsemuldisplaydev_attach_args a;
125	int console = (pa->pa_tag == gten_console_pcitag);
126	int error;
127	char devinfo[256], pbuf[10];
128
129	error = pci_mapreg_info(pa->pa_pc, pa->pa_tag, 0x14,
130		PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT,
131		&gt->gt_memaddr, &gt->gt_memsize, NULL);
132	if (error) {
133		aprint_error(": can't determine memory size: error=%d\n",
134			error);
135		return;
136	}
137	gt->gt_dev = self;
138	if (console) {
139		gt->gt_ri = &gten_console_ri;
140		gt->gt_nscreens = 1;
141	} else {
142		gt->gt_ri = kmem_zalloc(sizeof(*gt->gt_ri),
143			KM_SLEEP);
144#if 0
145		error = pci_mapreg_map(pa, 0x14,
146			PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT,
147			BUS_SPACE_MAP_LINEAR, NULL,
148			(bus_space_handle_t *) &gt->gt_ri->ri_bits,
149			NULL, NULL);
150#else
151		error = bus_space_map(pa->pa_memt, gt->gt_memaddr + GTEN_VRAM_OFFSET,
152			960*1024, BUS_SPACE_MAP_LINEAR,
153			(bus_space_handle_t *) &gt->gt_ri->ri_bits);
154#endif
155		if (error) {
156			aprint_error(": can't map frame buffer: error=%d\n",
157			    error);
158			return;
159		}
160
161		gten_common_init(gt->gt_ri);
162	}
163
164	gt->gt_paddr = vtophys((vaddr_t)gt->gt_ri->ri_bits);
165	if (gt->gt_paddr == 0) {
166		aprint_error(": cannot map framebuffer\n");
167		return;
168	}
169	gt->gt_psize = gt->gt_memsize - GTEN_VRAM_OFFSET;
170
171	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
172	aprint_normal(": %s\n", devinfo);
173	format_bytes(pbuf, sizeof(pbuf), gt->gt_psize);
174	aprint_normal_dev(self, "%s: %s, %dx%d, %dbpp\n", pbuf,
175	       gt->gt_ri->ri_width, gt->gt_ri->ri_height,
176	       gt->gt_ri->ri_depth);
177#if defined(DEBUG)
178	aprint_debug_dev(self, "%s: text %dx%d, =+%d+%d\n",
179	       gt->gt_ri->ri_cols, gt->gt_ri->ri_rows,
180	       gt->gt_ri->ri_xorigin, gt->gt_ri->ri_yorigin);
181
182	{ int i;
183	  struct rasops_info *ri = gt->gt_ri;
184	for (i = 0; i < 64; i++) {
185		int j = i * ri->ri_stride;
186		int k = (ri->ri_height - i - 1) * gt->gt_ri->ri_stride;
187		memset(ri->ri_bits + j, 0, 64 - i);
188		memset(ri->ri_bits + j + 64 - i, 255, i);
189
190		memset(ri->ri_bits + j + ri->ri_width - 64 + i, 0, 64 - i);
191		memset(ri->ri_bits + j + ri->ri_width - 64, 255, i);
192
193		memset(ri->ri_bits + k, 0, 64 - i);
194		memset(ri->ri_bits + k + 64 - i, 255, i);
195
196		memset(ri->ri_bits + k + ri->ri_width - 64 + i, 0, 64 - i);
197		memset(ri->ri_bits + k + ri->ri_width - 64, 255, i);
198	}}
199#endif
200
201	gt->gt_cmap_red[0] = gt->gt_cmap_green[0] = gt->gt_cmap_blue[0] = 0;
202	gt->gt_cmap_red[15] = gt->gt_cmap_red[255] = 0xff;
203	gt->gt_cmap_green[15] = gt->gt_cmap_green[255] = 0xff;
204	gt->gt_cmap_blue[15] = gt->gt_cmap_blue[255] = 0xff;
205
206	a.console = console;
207	a.scrdata = &gten_screenlist;
208	a.accessops = &gten_accessops;
209	a.accesscookie = gt;
210
211	config_found(self, &a, wsemuldisplaydevprint, CFARGS_NONE);
212}
213
214static void
215gten_common_init(struct rasops_info *ri)
216{
217	int32_t addr, width, height, linebytes, depth;
218	int i, screenbytes;
219
220	/* initialize rasops */
221	ri->ri_width = 640;
222	ri->ri_height = 480;
223	ri->ri_depth = 8;
224	ri->ri_stride = 640;
225	ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR;
226
227	rasops_init(ri, 30, 80);
228	/* black on white */
229	ri->ri_devcmap[0] = 0xffffffff;			/* bg */
230	ri->ri_devcmap[1] = 0;				/* fg */
231
232	memset(ri->ri_bits, 0xff, ri->ri_stride * ri->ri_height);
233
234	gten_stdscreen.nrows = ri->ri_rows;
235	gten_stdscreen.ncols = ri->ri_cols;
236	gten_stdscreen.textops = &ri->ri_ops;
237	gten_stdscreen.capabilities = ri->ri_caps;
238}
239
240static int
241gten_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
242    struct proc *p)
243{
244	struct gten_softc *gt = v;
245	struct wsdisplay_fbinfo *wdf;
246	struct grfinfo *gm;
247
248	switch (cmd) {
249	case WSDISPLAYIO_GTYPE:
250		*(u_int *)data = WSDISPLAY_TYPE_PCIMISC;	/* XXX ? */
251		return 0;
252
253	case WSDISPLAYIO_GINFO:
254		wdf = (void *)data;
255		wdf->height = gt->gt_ri->ri_height;
256		wdf->width = gt->gt_ri->ri_width;
257		wdf->depth = gt->gt_ri->ri_depth;
258		wdf->cmsize = 256;
259		return 0;
260
261	case WSDISPLAYIO_GETCMAP:
262		return gten_getcmap(gt, (struct wsdisplay_cmap *)data);
263
264	case WSDISPLAYIO_PUTCMAP:
265		return gten_putcmap(gt, (struct wsdisplay_cmap *)data);
266	}
267	return EPASSTHROUGH;
268}
269
270static paddr_t
271gten_mmap(void *v, void *vs, off_t offset, int prot)
272{
273	struct gten_softc *gt = v;
274
275	if (offset >= 0 && offset < gt->gt_psize)
276		return gt->gt_paddr + offset;
277	if (offset >= 0x1000000 && offset < gt->gt_memsize)
278		return gt->gt_memaddr + offset - 0x1000000;
279
280	return -1;
281}
282
283static int
284gten_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep,
285    int *curxp, int *curyp, long *attrp)
286{
287	struct gten_softc *gt = v;
288	struct rasops_info *ri = gt->gt_ri;
289	long defattr;
290
291	if (gt->gt_nscreens > 0)
292		return (ENOMEM);
293
294	*cookiep = ri;			/* one and only for now */
295	*curxp = 0;
296	*curyp = 0;
297	(*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
298	*attrp = defattr;
299	gt->gt_nscreens++;
300	return 0;
301}
302
303static void
304gten_free_screen(void *v, void *cookie)
305{
306	struct gten_softc *gt = v;
307
308	if (gt->gt_ri == &gten_console_ri)
309		panic("gten_free_screen: console");
310
311	gt->gt_nscreens--;
312}
313
314static int
315gten_show_screen(void *v, void *cookie, int waitok,
316    void (*cb)(void *, int, int), void *cbarg)
317{
318	return (0);
319}
320
321int
322gten_cnattach(pci_chipset_tag_t pc, bus_space_tag_t memt)
323{
324	struct rasops_info *ri = &gten_console_ri;
325	u_int32_t mapreg, id, mask, mapsize;
326	long defattr;
327	pcitag_t tag;
328	int s, error;
329	bus_size_t bussize;
330	bus_addr_t busaddr;
331
332	tag = pci_make_tag(pc, 0, 14, 0);
333
334	id = pci_conf_read(pc, tag, PCI_ID_REG);
335	if (PCI_VENDOR(id) != PCI_VENDOR_WD ||
336	    PCI_PRODUCT(id) != PCI_PRODUCT_WD_90C)
337		return ENXIO;
338
339	mapreg = pci_conf_read(pc, tag, 0x14);
340	if (PCI_MAPREG_TYPE(mapreg) != PCI_MAPREG_TYPE_MEM ||
341	    PCI_MAPREG_MEM_TYPE(mapreg) != PCI_MAPREG_MEM_TYPE_32BIT)
342		return ENXIO;
343
344        s = splhigh();
345        pci_conf_write(pc, tag, 0x14, 0xffffffff);
346        mask = pci_conf_read(pc, tag, 0x14);
347        pci_conf_write(pc, tag, 0x14, mapreg);
348	splx(s);
349	bussize = PCI_MAPREG_MEM_SIZE(mask);
350	busaddr = PCI_MAPREG_MEM_ADDR(mapreg);
351
352	error = bus_space_map(memt, busaddr + GTEN_VRAM_OFFSET, 960*1024,
353		BUS_SPACE_MAP_LINEAR, (bus_space_handle_t *) &ri->ri_bits);
354	if (error)
355		return error;
356
357	gten_common_init(ri);
358
359	(*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
360	wsdisplay_cnattach(&gten_stdscreen, ri, 0, 0, defattr);
361
362	gten_console_pcitag = tag;
363
364	return 0;
365}
366
367static int
368gten_getcmap(struct gten_softc *gt, struct wsdisplay_cmap *cm)
369{
370	u_int index = cm->index;
371	u_int count = cm->count;
372	int error;
373
374	if (index >= 256 || count > 256 || index + count > 256)
375		return EINVAL;
376
377	error = copyout(&gt->gt_cmap_red[index],   cm->red,   count);
378	if (error)
379		return error;
380	error = copyout(&gt->gt_cmap_green[index], cm->green, count);
381	if (error)
382		return error;
383	error = copyout(&gt->gt_cmap_blue[index],  cm->blue,  count);
384	if (error)
385		return error;
386
387	return 0;
388}
389
390static int
391gten_putcmap(struct gten_softc *gt, struct wsdisplay_cmap *cm)
392{
393	int index = cm->index;
394	int count = cm->count;
395	int i, error;
396	u_char rbuf[256], gbuf[256], bbuf[256];
397
398	if (cm->index >= 256 || cm->count > 256 ||
399	    (cm->index + cm->count) > 256)
400		return EINVAL;
401	error = copyin(cm->red, &rbuf[index], count);
402	if (error)
403		return error;
404	error = copyin(cm->green, &gbuf[index], count);
405	if (error)
406		return error;
407	error = copyin(cm->blue, &bbuf[index], count);
408	if (error)
409		return error;
410
411	memcpy(&gt->gt_cmap_red[index], &rbuf[index], count);
412	memcpy(&gt->gt_cmap_green[index], &gbuf[index], count);
413	memcpy(&gt->gt_cmap_blue[index], &bbuf[index], count);
414	return 0;
415}
416