summaryrefslogtreecommitdiffstats
path: root/drivers/video/sunxvr2500.c
blob: 4010492c692004a379ab64d754646df567a20131 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
/* s3d.c: Sun 3DLABS XVR-2500 et al. driver for sparc64 systems
 *
 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/fb.h>
#include <linux/pci.h>
#include <linux/init.h>

#include <asm/io.h>
#include <asm/prom.h>
#include <asm/of_device.h>

struct s3d_info {
	struct fb_info		*info;
	struct pci_dev		*pdev;

	char __iomem		*fb_base;
	unsigned long		fb_base_phys;

	struct device_node	*of_node;

	unsigned int		width;
	unsigned int		height;
	unsigned int		depth;
	unsigned int		fb_size;

	u32			pseudo_palette[256];
};

static int __devinit s3d_get_props(struct s3d_info *sp)
{
	sp->width = of_getintprop_default(sp->of_node, "width", 0);
	sp->height = of_getintprop_default(sp->of_node, "height", 0);
	sp->depth = of_getintprop_default(sp->of_node, "depth", 8);

	if (!sp->width || !sp->height) {
		printk(KERN_ERR "s3d: Critical properties missing for %s\n",
		       pci_name(sp->pdev));
		return -EINVAL;
	}

	return 0;
}

static int s3d_setcolreg(unsigned regno,
			 unsigned red, unsigned green, unsigned blue,
			 unsigned transp, struct fb_info *info)
{
	u32 value;

	if (regno >= 256)
		return 1;

	red >>= 8;
	green >>= 8;
	blue >>= 8;

	value = (blue << 24) | (green << 16) | (red << 8);
	((u32 *)info->pseudo_palette)[regno] = value;

	return 0;
}

static struct fb_ops s3d_ops = {
	.owner			= THIS_MODULE,
	.fb_setcolreg		= s3d_setcolreg,
	.fb_fillrect		= cfb_fillrect,
	.fb_copyarea		= cfb_copyarea,
	.fb_imageblit		= cfb_imageblit,
};

static int __devinit s3d_set_fbinfo(struct s3d_info *sp)
{
	struct fb_info *info = sp->info;
	struct fb_var_screeninfo *var = &info->var;

	info->flags = FBINFO_DEFAULT;
	info->fbops = &s3d_ops;
	info->screen_base = sp->fb_base;
	info->screen_size = sp->fb_size;

	info->pseudo_palette = sp->pseudo_palette;

	/* Fill fix common fields */
	strlcpy(info->fix.id, "s3d", sizeof(info->fix.id));
        info->fix.smem_start = sp->fb_base_phys;
        info->fix.smem_len = sp->fb_size;
        info->fix.type = FB_TYPE_PACKED_PIXELS;
	if (sp->depth == 32 || sp->depth == 24)
		info->fix.visual = FB_VISUAL_TRUECOLOR;
	else
		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;

	var->xres = sp->width;
	var->yres = sp->height;
	var->xres_virtual = var->xres;
	var->yres_virtual = var->yres;
	var->bits_per_pixel = sp->depth;

	var->red.offset = 8;
	var->red.length = 8;
	var->green.offset = 16;
	var->green.length = 8;
	var->blue.offset = 24;
	var->blue.length = 8;
	var->transp.offset = 0;
	var->transp.length = 0;

	if (fb_alloc_cmap(&info->cmap, 256, 0)) {
		printk(KERN_ERR "s3d: Cannot allocate color map.\n");
		return -ENOMEM;
	}

        return 0;
}

static int __devinit s3d_pci_register(struct pci_dev *pdev,
				      const struct pci_device_id *ent)
{
	struct fb_info *info;
	struct s3d_info *sp;
	int err;

	err = pci_enable_device(pdev);
	if (err < 0) {
		printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
		       pci_name(pdev));
		goto err_out;
	}

	info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
	if (!info) {
		printk(KERN_ERR "s3d: Cannot allocate fb_info\n");
		err = -ENOMEM;
		goto err_disable;
	}

	sp = info->par;
	sp->info = info;
	sp->pdev = pdev;
	sp->of_node = pci_device_to_OF_node(pdev);
	if (!sp->of_node) {
		printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
		       pci_name(pdev));
		err = -ENODEV;
		goto err_release_fb;
	}

	sp->fb_base_phys = pci_resource_start (pdev, 1);

	err = pci_request_region(pdev, 1, "s3d framebuffer");
	if (err < 0) {
		printk("s3d: Cannot request region 1 for %s\n",
		       pci_name(pdev));
		goto err_release_fb;
	}

	err = s3d_get_props(sp);
	if (err)
		goto err_release_pci;

	/* XXX 'linebytes' is often wrong, it is equal to the width
	 * XXX with depth of 32 on my XVR-2500 which is clearly not
	 * XXX right.  So we don't try to use it.
	 */
	switch (sp->depth) {
	case 8:
		info->fix.line_length = sp->width;
		break;
	case 16:
		info->fix.line_length = sp->width * 2;
		break;
	case 24:
		info->fix.line_length = sp->width * 3;
		break;
	case 32:
		info->fix.line_length = sp->width * 4;
		break;
	}
	sp->fb_size = info->fix.line_length * sp->height;

	sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
	if (!sp->fb_base)
		goto err_release_pci;

	err = s3d_set_fbinfo(sp);
	if (err)
		goto err_unmap_fb;

	pci_set_drvdata(pdev, info);

	printk("s3d: Found device at %s\n", pci_name(pdev));

	err = register_framebuffer(info);
	if (err < 0) {
		printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
		       pci_name(pdev));
		goto err_unmap_fb;
	}

	return 0;

err_unmap_fb:
	iounmap(sp->fb_base);

err_release_pci:
	pci_release_region(pdev, 1);

err_release_fb:
        framebuffer_release(info);

err_disable:
	pci_disable_device(pdev);

err_out:
	return err;
}

static void __devexit s3d_pci_unregister(struct pci_dev *pdev)
{
	struct fb_info *info = pci_get_drvdata(pdev);
	struct s3d_info *sp = info->par;

	unregister_framebuffer(info);

	iounmap(sp->fb_base);

	pci_release_region(pdev, 1);

        framebuffer_release(info);

	pci_disable_device(pdev);
}

static struct pci_device_id s3d_pci_table[] = {
	{	/* XVR-2500 */
		PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032),
		.driver_data = 1,
	},
	{	/* XVR-500 */
		PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x07a2),
		.driver_data = 0,
	},
	{ 0, }
};

static struct pci_driver s3d_driver = {
	.name		= "s3d",
	.id_table	= s3d_pci_table,
	.probe		= s3d_pci_register,
	.remove		= __devexit_p(s3d_pci_unregister),
};

static int __init s3d_init(void)
{
	if (fb_get_options("s3d", NULL))
		return -ENODEV;

	return pci_register_driver(&s3d_driver);
}

static void __exit s3d_exit(void)
{
	pci_unregister_driver(&s3d_driver);
}

module_init(s3d_init);
module_exit(s3d_exit);

MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics");
MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
MODULE_VERSION("1.0");
MODULE_LICENSE("GPL");