/* s3d.c: Sun 3DLABS XVR-2500 et al. driver for sparc64 systems * * Copyright (C) 2007 David S. Miller (davem@davemloft.net) */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/fb.h> #include <linux/pci.h> #include <linux/init.h> #include <asm/io.h> #include <asm/prom.h> #include <asm/of_device.h> struct s3d_info { struct fb_info *info; struct pci_dev *pdev; char __iomem *fb_base; unsigned long fb_base_phys; struct device_node *of_node; unsigned int width; unsigned int height; unsigned int depth; unsigned int fb_size; u32 pseudo_palette[256]; }; static int __devinit s3d_get_props(struct s3d_info *sp) { sp->width = of_getintprop_default(sp->of_node, "width", 0); sp->height = of_getintprop_default(sp->of_node, "height", 0); sp->depth = of_getintprop_default(sp->of_node, "depth", 8); if (!sp->width || !sp->height) { printk(KERN_ERR "s3d: Critical properties missing for %s\n", pci_name(sp->pdev)); return -EINVAL; } return 0; } static int s3d_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { u32 value; if (regno >= 256) return 1; red >>= 8; green >>= 8; blue >>= 8; value = (blue << 24) | (green << 16) | (red << 8); ((u32 *)info->pseudo_palette)[regno] = value; return 0; } static struct fb_ops s3d_ops = { .owner = THIS_MODULE, .fb_setcolreg = s3d_setcolreg, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, }; static int __devinit s3d_set_fbinfo(struct s3d_info *sp) { struct fb_info *info = sp->info; struct fb_var_screeninfo *var = &info->var; info->flags = FBINFO_DEFAULT; info->fbops = &s3d_ops; info->screen_base = sp->fb_base; info->screen_size = sp->fb_size; info->pseudo_palette = sp->pseudo_palette; /* Fill fix common fields */ strlcpy(info->fix.id, "s3d", sizeof(info->fix.id)); info->fix.smem_start = sp->fb_base_phys; info->fix.smem_len = sp->fb_size; info->fix.type = FB_TYPE_PACKED_PIXELS; if (sp->depth == 32 || sp->depth == 24) info->fix.visual = FB_VISUAL_TRUECOLOR; else info->fix.visual = FB_VISUAL_PSEUDOCOLOR; var->xres = sp->width; var->yres = sp->height; var->xres_virtual = var->xres; var->yres_virtual = var->yres; var->bits_per_pixel = sp->depth; var->red.offset = 8; var->red.length = 8; var->green.offset = 16; var->green.length = 8; var->blue.offset = 24; var->blue.length = 8; var->transp.offset = 0; var->transp.length = 0; if (fb_alloc_cmap(&info->cmap, 256, 0)) { printk(KERN_ERR "s3d: Cannot allocate color map.\n"); return -ENOMEM; } return 0; } static int __devinit s3d_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent) { struct fb_info *info; struct s3d_info *sp; int err; err = pci_enable_device(pdev); if (err < 0) { printk(KERN_ERR "s3d: Cannot enable PCI device %s\n", pci_name(pdev)); goto err_out; } info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev); if (!info) { printk(KERN_ERR "s3d: Cannot allocate fb_info\n"); err = -ENOMEM; goto err_disable; } sp = info->par; sp->info = info; sp->pdev = pdev; sp->of_node = pci_device_to_OF_node(pdev); if (!sp->of_node) { printk(KERN_ERR "s3d: Cannot find OF node of %s\n", pci_name(pdev)); err = -ENODEV; goto err_release_fb; } sp->fb_base_phys = pci_resource_start (pdev, 1); err = pci_request_region(pdev, 1, "s3d framebuffer"); if (err < 0) { printk("s3d: Cannot request region 1 for %s\n", pci_name(pdev)); goto err_release_fb; } err = s3d_get_props(sp); if (err) goto err_release_pci; /* XXX 'linebytes' is often wrong, it is equal to the width * XXX with depth of 32 on my XVR-2500 which is clearly not * XXX right. So we don't try to use it. */ switch (sp->depth) { case 8: info->fix.line_length = sp->width; break; case 16: info->fix.line_length = sp->width * 2; break; case 24: info->fix.line_length = sp->width * 3; break; case 32: info->fix.line_length = sp->width * 4; break; } sp->fb_size = info->fix.line_length * sp->height; sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size); if (!sp->fb_base) goto err_release_pci; err = s3d_set_fbinfo(sp); if (err) goto err_unmap_fb; pci_set_drvdata(pdev, info); printk("s3d: Found device at %s\n", pci_name(pdev)); err = register_framebuffer(info); if (err < 0) { printk(KERN_ERR "s3d: Could not register framebuffer %s\n", pci_name(pdev)); goto err_unmap_fb; } return 0; err_unmap_fb: iounmap(sp->fb_base); err_release_pci: pci_release_region(pdev, 1); err_release_fb: framebuffer_release(info); err_disable: pci_disable_device(pdev); err_out: return err; } static void __devexit s3d_pci_unregister(struct pci_dev *pdev) { struct fb_info *info = pci_get_drvdata(pdev); struct s3d_info *sp = info->par; unregister_framebuffer(info); iounmap(sp->fb_base); pci_release_region(pdev, 1); framebuffer_release(info); pci_disable_device(pdev); } static struct pci_device_id s3d_pci_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c), }, { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d), }, { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e), }, { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f), }, { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030), }, { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031), }, { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032), }, { PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033), }, { 0, } }; static struct pci_driver s3d_driver = { .name = "s3d", .id_table = s3d_pci_table, .probe = s3d_pci_register, .remove = __devexit_p(s3d_pci_unregister), }; static int __init s3d_init(void) { if (fb_get_options("s3d", NULL)) return -ENODEV; return pci_register_driver(&s3d_driver); } static void __exit s3d_exit(void) { pci_unregister_driver(&s3d_driver); } module_init(s3d_init); module_exit(s3d_exit); MODULE_DESCRIPTION("framebuffer driver for Sun XVR-2500 graphics"); MODULE_AUTHOR("David S. Miller <davem@davemloft.net>"); MODULE_VERSION("1.0"); MODULE_LICENSE("GPL");