1 /* sunxvr2500.c: Sun 3DLABS XVR-2500 et al. fb driver for sparc64 systems 2 * 3 * License: GPL 4 * 5 * Copyright (C) 2007 David S. Miller (davem@davemloft.net) 6 */ 7 8 #include <linux/aperture.h> 9 #include <linux/kernel.h> 10 #include <linux/fb.h> 11 #include <linux/pci.h> 12 #include <linux/init.h> 13 #include <linux/of.h> 14 15 #include <asm/io.h> 16 17 struct 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 34 static int 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 49 static 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 67 static const 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 75 static int 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 strscpy(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 } 119 120 static int 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 = aperture_remove_conflicting_pci_devices(pdev, "s3dfb"); 128 if (err) 129 return err; 130 131 err = pci_enable_device(pdev); 132 if (err < 0) { 133 printk(KERN_ERR "s3d: Cannot enable PCI device %s\n", 134 pci_name(pdev)); 135 goto err_out; 136 } 137 138 info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev); 139 if (!info) { 140 err = -ENOMEM; 141 goto err_disable; 142 } 143 144 sp = info->par; 145 sp->info = info; 146 sp->pdev = pdev; 147 sp->of_node = pci_device_to_OF_node(pdev); 148 if (!sp->of_node) { 149 printk(KERN_ERR "s3d: Cannot find OF node of %s\n", 150 pci_name(pdev)); 151 err = -ENODEV; 152 goto err_release_fb; 153 } 154 155 sp->fb_base_phys = pci_resource_start (pdev, 1); 156 157 err = pci_request_region(pdev, 1, "s3d framebuffer"); 158 if (err < 0) { 159 printk("s3d: Cannot request region 1 for %s\n", 160 pci_name(pdev)); 161 goto err_release_fb; 162 } 163 164 err = s3d_get_props(sp); 165 if (err) 166 goto err_release_pci; 167 168 /* XXX 'linebytes' is often wrong, it is equal to the width 169 * XXX with depth of 32 on my XVR-2500 which is clearly not 170 * XXX right. So we don't try to use it. 171 */ 172 switch (sp->depth) { 173 case 8: 174 info->fix.line_length = sp->width; 175 break; 176 case 16: 177 info->fix.line_length = sp->width * 2; 178 break; 179 case 24: 180 info->fix.line_length = sp->width * 3; 181 break; 182 case 32: 183 info->fix.line_length = sp->width * 4; 184 break; 185 } 186 sp->fb_size = info->fix.line_length * sp->height; 187 188 sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size); 189 if (!sp->fb_base) { 190 err = -ENOMEM; 191 goto err_release_pci; 192 } 193 194 err = s3d_set_fbinfo(sp); 195 if (err) 196 goto err_unmap_fb; 197 198 pci_set_drvdata(pdev, info); 199 200 printk("s3d: Found device at %s\n", pci_name(pdev)); 201 202 err = register_framebuffer(info); 203 if (err < 0) { 204 printk(KERN_ERR "s3d: Could not register framebuffer %s\n", 205 pci_name(pdev)); 206 goto err_unmap_fb; 207 } 208 209 return 0; 210 211 err_unmap_fb: 212 iounmap(sp->fb_base); 213 214 err_release_pci: 215 pci_release_region(pdev, 1); 216 217 err_release_fb: 218 framebuffer_release(info); 219 220 err_disable: 221 pci_disable_device(pdev); 222 223 err_out: 224 return err; 225 } 226 227 static const struct pci_device_id s3d_pci_table[] = { 228 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c), }, 229 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d), }, 230 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e), }, 231 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f), }, 232 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030), }, 233 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031), }, 234 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032), }, 235 { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033), }, 236 { 0, } 237 }; 238 239 static struct pci_driver s3d_driver = { 240 .driver = { 241 .suppress_bind_attrs = true, 242 }, 243 .name = "s3d", 244 .id_table = s3d_pci_table, 245 .probe = s3d_pci_register, 246 }; 247 248 static int __init s3d_init(void) 249 { 250 if (fb_modesetting_disabled("s3d")) 251 return -ENODEV; 252 253 if (fb_get_options("s3d", NULL)) 254 return -ENODEV; 255 256 return pci_register_driver(&s3d_driver); 257 } 258 device_initcall(s3d_init); 259