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