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/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 15 struct 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 32 static 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 47 static 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 65 static 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 73 static 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 /* Fill fix common fields */ 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 } 117 118 static 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 /* XXX 'linebytes' is often wrong, it is equal to the width 164 * XXX with depth of 32 on my XVR-2500 which is clearly not 165 * XXX right. So we don't try to use it. 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; 205 206 err_unmap_fb: 207 iounmap(sp->fb_base); 208 209 err_release_pci: 210 pci_release_region(pdev, 1); 211 212 err_release_fb: 213 framebuffer_release(info); 214 215 err_disable: 216 pci_disable_device(pdev); 217 218 err_out: 219 return err; 220 } 221 222 static 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 } 237 238 static 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 }; 249 250 static 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 }; 256 257 static 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 } 264 265 static void __exit s3d_exit(void) 266 { 267 pci_unregister_driver(&s3d_driver); 268 } 269 270 module_init(s3d_init); 271 module_exit(s3d_exit); 272 273 MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics"); 274 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>"); 275 MODULE_VERSION("1.0"); 276 MODULE_LICENSE("GPL"); 277