1/* s3d.c: Sun 3DLABS XVR-2500 et al. driver for sparc64 systems
2 *
3 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
4 */
5
6#include <linux/module.h>
7#include <linux/kernel.h>
8#include <linux/slab.h>
9#include <linux/fb.h>
10#include <linux/pci.h>
11#include <linux/init.h>
12
13#include <asm/io.h>
14#include <asm/prom.h>
15#include <asm/of_device.h>
16
17struct s3d_info {
18	struct fb_info		*info;
19	struct pci_dev		*pdev;
20
21	char __iomem		*fb_base;
22	unsigned long		fb_base_phys;
23
24	struct device_node	*of_node;
25
26	unsigned int		width;
27	unsigned int		height;
28	unsigned int		depth;
29	unsigned int		fb_size;
30
31	u32			pseudo_palette[16];
32};
33
34static int __devinit s3d_get_props(struct s3d_info *sp)
35{
36	sp->width = of_getintprop_default(sp->of_node, "width", 0);
37	sp->height = of_getintprop_default(sp->of_node, "height", 0);
38	sp->depth = of_getintprop_default(sp->of_node, "depth", 8);
39
40	if (!sp->width || !sp->height) {
41		printk(KERN_ERR "s3d: Critical properties missing for %s\n",
42		       pci_name(sp->pdev));
43		return -EINVAL;
44	}
45
46	return 0;
47}
48
49static int s3d_setcolreg(unsigned regno,
50			 unsigned red, unsigned green, unsigned blue,
51			 unsigned transp, struct fb_info *info)
52{
53	u32 value;
54
55	if (regno < 16) {
56		red >>= 8;
57		green >>= 8;
58		blue >>= 8;
59
60		value = (blue << 24) | (green << 16) | (red << 8);
61		((u32 *)info->pseudo_palette)[regno] = value;
62	}
63
64	return 0;
65}
66
67static struct fb_ops s3d_ops = {
68	.owner			= THIS_MODULE,
69	.fb_setcolreg		= s3d_setcolreg,
70	.fb_fillrect		= cfb_fillrect,
71	.fb_copyarea		= cfb_copyarea,
72	.fb_imageblit		= cfb_imageblit,
73};
74
75static int __devinit s3d_set_fbinfo(struct s3d_info *sp)
76{
77	struct fb_info *info = sp->info;
78	struct fb_var_screeninfo *var = &info->var;
79
80	info->flags = FBINFO_DEFAULT;
81	info->fbops = &s3d_ops;
82	info->screen_base = sp->fb_base;
83	info->screen_size = sp->fb_size;
84
85	info->pseudo_palette = sp->pseudo_palette;
86
87	/* Fill fix common fields */
88	strlcpy(info->fix.id, "s3d", sizeof(info->fix.id));
89        info->fix.smem_start = sp->fb_base_phys;
90        info->fix.smem_len = sp->fb_size;
91        info->fix.type = FB_TYPE_PACKED_PIXELS;
92	if (sp->depth == 32 || sp->depth == 24)
93		info->fix.visual = FB_VISUAL_TRUECOLOR;
94	else
95		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
96
97	var->xres = sp->width;
98	var->yres = sp->height;
99	var->xres_virtual = var->xres;
100	var->yres_virtual = var->yres;
101	var->bits_per_pixel = sp->depth;
102
103	var->red.offset = 8;
104	var->red.length = 8;
105	var->green.offset = 16;
106	var->green.length = 8;
107	var->blue.offset = 24;
108	var->blue.length = 8;
109	var->transp.offset = 0;
110	var->transp.length = 0;
111
112	if (fb_alloc_cmap(&info->cmap, 256, 0)) {
113		printk(KERN_ERR "s3d: Cannot allocate color map.\n");
114		return -ENOMEM;
115	}
116
117        return 0;
118}
119
120static int __devinit s3d_pci_register(struct pci_dev *pdev,
121				      const struct pci_device_id *ent)
122{
123	struct fb_info *info;
124	struct s3d_info *sp;
125	int err;
126
127	err = pci_enable_device(pdev);
128	if (err < 0) {
129		printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
130		       pci_name(pdev));
131		goto err_out;
132	}
133
134	info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
135	if (!info) {
136		printk(KERN_ERR "s3d: Cannot allocate fb_info\n");
137		err = -ENOMEM;
138		goto err_disable;
139	}
140
141	sp = info->par;
142	sp->info = info;
143	sp->pdev = pdev;
144	sp->of_node = pci_device_to_OF_node(pdev);
145	if (!sp->of_node) {
146		printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
147		       pci_name(pdev));
148		err = -ENODEV;
149		goto err_release_fb;
150	}
151
152	sp->fb_base_phys = pci_resource_start (pdev, 1);
153
154	err = pci_request_region(pdev, 1, "s3d framebuffer");
155	if (err < 0) {
156		printk("s3d: Cannot request region 1 for %s\n",
157		       pci_name(pdev));
158		goto err_release_fb;
159	}
160
161	err = s3d_get_props(sp);
162	if (err)
163		goto err_release_pci;
164
165	switch (sp->depth) {
166	case 8:
167		info->fix.line_length = sp->width;
168		break;
169	case 16:
170		info->fix.line_length = sp->width * 2;
171		break;
172	case 24:
173		info->fix.line_length = sp->width * 3;
174		break;
175	case 32:
176		info->fix.line_length = sp->width * 4;
177		break;
178	}
179	sp->fb_size = info->fix.line_length * sp->height;
180
181	sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
182	if (!sp->fb_base)
183		goto err_release_pci;
184
185	err = s3d_set_fbinfo(sp);
186	if (err)
187		goto err_unmap_fb;
188
189	pci_set_drvdata(pdev, info);
190
191	printk("s3d: Found device at %s\n", pci_name(pdev));
192
193	err = register_framebuffer(info);
194	if (err < 0) {
195		printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
196		       pci_name(pdev));
197		goto err_unmap_fb;
198	}
199
200	return 0;
201
202err_unmap_fb:
203	iounmap(sp->fb_base);
204
205err_release_pci:
206	pci_release_region(pdev, 1);
207
208err_release_fb:
209        framebuffer_release(info);
210
211err_disable:
212	pci_disable_device(pdev);
213
214err_out:
215	return err;
216}
217
218static void __devexit s3d_pci_unregister(struct pci_dev *pdev)
219{
220	struct fb_info *info = pci_get_drvdata(pdev);
221	struct s3d_info *sp = info->par;
222
223	unregister_framebuffer(info);
224
225	iounmap(sp->fb_base);
226
227	pci_release_region(pdev, 1);
228
229        framebuffer_release(info);
230
231	pci_disable_device(pdev);
232}
233
234static struct pci_device_id s3d_pci_table[] = {
235	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c),	},
236	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d),	},
237	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e),	},
238	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f),	},
239	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030),	},
240	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031),	},
241	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032),	},
242	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033),	},
243	{ 0, }
244};
245
246static struct pci_driver s3d_driver = {
247	.name		= "s3d",
248	.id_table	= s3d_pci_table,
249	.probe		= s3d_pci_register,
250	.remove		= __devexit_p(s3d_pci_unregister),
251};
252
253static int __init s3d_init(void)
254{
255	if (fb_get_options("s3d", NULL))
256		return -ENODEV;
257
258	return pci_register_driver(&s3d_driver);
259}
260
261static void __exit s3d_exit(void)
262{
263	pci_unregister_driver(&s3d_driver);
264}
265
266module_init(s3d_init);
267module_exit(s3d_exit);
268
269MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics");
270MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
271MODULE_VERSION("1.0");
272MODULE_LICENSE("GPL");
273