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5
6#include <linux/module.h>
7#include <linux/kernel.h>
8#include <linux/fb.h>
9#include <linux/pci.h>
10#include <linux/init.h>
11#include <linux/of_device.h>
12
13#include <asm/io.h>
14
15struct s3d_info {
16 struct fb_info *info;
17 struct pci_dev *pdev;
18
19 char __iomem *fb_base;
20 unsigned long fb_base_phys;
21
22 struct device_node *of_node;
23
24 unsigned int width;
25 unsigned int height;
26 unsigned int depth;
27 unsigned int fb_size;
28
29 u32 pseudo_palette[16];
30};
31
32static int s3d_get_props(struct s3d_info *sp)
33{
34 sp->width = of_getintprop_default(sp->of_node, "width", 0);
35 sp->height = of_getintprop_default(sp->of_node, "height", 0);
36 sp->depth = of_getintprop_default(sp->of_node, "depth", 8);
37
38 if (!sp->width || !sp->height) {
39 printk(KERN_ERR "s3d: Critical properties missing for %s\n",
40 pci_name(sp->pdev));
41 return -EINVAL;
42 }
43
44 return 0;
45}
46
47static int s3d_setcolreg(unsigned regno,
48 unsigned red, unsigned green, unsigned blue,
49 unsigned transp, struct fb_info *info)
50{
51 u32 value;
52
53 if (regno < 16) {
54 red >>= 8;
55 green >>= 8;
56 blue >>= 8;
57
58 value = (blue << 24) | (green << 16) | (red << 8);
59 ((u32 *)info->pseudo_palette)[regno] = value;
60 }
61
62 return 0;
63}
64
65static struct fb_ops s3d_ops = {
66 .owner = THIS_MODULE,
67 .fb_setcolreg = s3d_setcolreg,
68 .fb_fillrect = cfb_fillrect,
69 .fb_copyarea = cfb_copyarea,
70 .fb_imageblit = cfb_imageblit,
71};
72
73static int s3d_set_fbinfo(struct s3d_info *sp)
74{
75 struct fb_info *info = sp->info;
76 struct fb_var_screeninfo *var = &info->var;
77
78 info->flags = FBINFO_DEFAULT;
79 info->fbops = &s3d_ops;
80 info->screen_base = sp->fb_base;
81 info->screen_size = sp->fb_size;
82
83 info->pseudo_palette = sp->pseudo_palette;
84
85
86 strlcpy(info->fix.id, "s3d", sizeof(info->fix.id));
87 info->fix.smem_start = sp->fb_base_phys;
88 info->fix.smem_len = sp->fb_size;
89 info->fix.type = FB_TYPE_PACKED_PIXELS;
90 if (sp->depth == 32 || sp->depth == 24)
91 info->fix.visual = FB_VISUAL_TRUECOLOR;
92 else
93 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
94
95 var->xres = sp->width;
96 var->yres = sp->height;
97 var->xres_virtual = var->xres;
98 var->yres_virtual = var->yres;
99 var->bits_per_pixel = sp->depth;
100
101 var->red.offset = 8;
102 var->red.length = 8;
103 var->green.offset = 16;
104 var->green.length = 8;
105 var->blue.offset = 24;
106 var->blue.length = 8;
107 var->transp.offset = 0;
108 var->transp.length = 0;
109
110 if (fb_alloc_cmap(&info->cmap, 256, 0)) {
111 printk(KERN_ERR "s3d: Cannot allocate color map.\n");
112 return -ENOMEM;
113 }
114
115 return 0;
116}
117
118static int s3d_pci_register(struct pci_dev *pdev,
119 const struct pci_device_id *ent)
120{
121 struct fb_info *info;
122 struct s3d_info *sp;
123 int err;
124
125 err = pci_enable_device(pdev);
126 if (err < 0) {
127 printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
128 pci_name(pdev));
129 goto err_out;
130 }
131
132 info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
133 if (!info) {
134 printk(KERN_ERR "s3d: Cannot allocate fb_info\n");
135 err = -ENOMEM;
136 goto err_disable;
137 }
138
139 sp = info->par;
140 sp->info = info;
141 sp->pdev = pdev;
142 sp->of_node = pci_device_to_OF_node(pdev);
143 if (!sp->of_node) {
144 printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
145 pci_name(pdev));
146 err = -ENODEV;
147 goto err_release_fb;
148 }
149
150 sp->fb_base_phys = pci_resource_start (pdev, 1);
151
152 err = pci_request_region(pdev, 1, "s3d framebuffer");
153 if (err < 0) {
154 printk("s3d: Cannot request region 1 for %s\n",
155 pci_name(pdev));
156 goto err_release_fb;
157 }
158
159 err = s3d_get_props(sp);
160 if (err)
161 goto err_release_pci;
162
163
164
165
166
167 switch (sp->depth) {
168 case 8:
169 info->fix.line_length = sp->width;
170 break;
171 case 16:
172 info->fix.line_length = sp->width * 2;
173 break;
174 case 24:
175 info->fix.line_length = sp->width * 3;
176 break;
177 case 32:
178 info->fix.line_length = sp->width * 4;
179 break;
180 }
181 sp->fb_size = info->fix.line_length * sp->height;
182
183 sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
184 if (!sp->fb_base) {
185 err = -ENOMEM;
186 goto err_release_pci;
187 }
188
189 err = s3d_set_fbinfo(sp);
190 if (err)
191 goto err_unmap_fb;
192
193 pci_set_drvdata(pdev, info);
194
195 printk("s3d: Found device at %s\n", pci_name(pdev));
196
197 err = register_framebuffer(info);
198 if (err < 0) {
199 printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
200 pci_name(pdev));
201 goto err_unmap_fb;
202 }
203
204 return 0;
205
206err_unmap_fb:
207 iounmap(sp->fb_base);
208
209err_release_pci:
210 pci_release_region(pdev, 1);
211
212err_release_fb:
213 framebuffer_release(info);
214
215err_disable:
216 pci_disable_device(pdev);
217
218err_out:
219 return err;
220}
221
222static void s3d_pci_unregister(struct pci_dev *pdev)
223{
224 struct fb_info *info = pci_get_drvdata(pdev);
225 struct s3d_info *sp = info->par;
226
227 unregister_framebuffer(info);
228
229 iounmap(sp->fb_base);
230
231 pci_release_region(pdev, 1);
232
233 framebuffer_release(info);
234
235 pci_disable_device(pdev);
236}
237
238static struct pci_device_id s3d_pci_table[] = {
239 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c), },
240 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d), },
241 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e), },
242 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f), },
243 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030), },
244 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031), },
245 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032), },
246 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033), },
247 { 0, }
248};
249
250static struct pci_driver s3d_driver = {
251 .name = "s3d",
252 .id_table = s3d_pci_table,
253 .probe = s3d_pci_register,
254 .remove = s3d_pci_unregister,
255};
256
257static int __init s3d_init(void)
258{
259 if (fb_get_options("s3d", NULL))
260 return -ENODEV;
261
262 return pci_register_driver(&s3d_driver);
263}
264
265static void __exit s3d_exit(void)
266{
267 pci_unregister_driver(&s3d_driver);
268}
269
270module_init(s3d_init);
271module_exit(s3d_exit);
272
273MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics");
274MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
275MODULE_VERSION("1.0");
276MODULE_LICENSE("GPL");
277
