diff options
Diffstat (limited to 'drivers/video/sbuslib.c')
| -rw-r--r-- | drivers/video/sbuslib.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/drivers/video/sbuslib.c b/drivers/video/sbuslib.c deleted file mode 100644 index 34f72edba82..00000000000 --- a/drivers/video/sbuslib.c +++ /dev/null @@ -1,184 +0,0 @@ -/* sbuslib.c: Helper library for SBUS framebuffer drivers. - * - * Copyright (C) 2003 David S. Miller (davem@redhat.com) - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/string.h> -#include <linux/fb.h> -#include <linux/mm.h> - -#include <asm/oplib.h> -#include <asm/fbio.h> - -#include "sbuslib.h" - -void sbusfb_fill_var(struct fb_var_screeninfo *var, int prom_node, int bpp) -{ - memset(var, 0, sizeof(*var)); - - var->xres = prom_getintdefault(prom_node, "width", 1152); - var->yres = prom_getintdefault(prom_node, "height", 900); - var->xres_virtual = var->xres; - var->yres_virtual = var->yres; - var->bits_per_pixel = bpp; -} - -EXPORT_SYMBOL(sbusfb_fill_var); - -static unsigned long sbusfb_mmapsize(long size, unsigned long fbsize) -{ - if (size == SBUS_MMAP_EMPTY) return 0; - if (size >= 0) return size; - return fbsize * (-size); -} - -int sbusfb_mmap_helper(struct sbus_mmap_map *map, - unsigned long physbase, - unsigned long fbsize, - unsigned long iospace, - struct vm_area_struct *vma) -{ - unsigned int size, page, r, map_size; - unsigned long map_offset = 0; - unsigned long off; - int i; - - size = vma->vm_end - vma->vm_start; - if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) - return -EINVAL; - - off = vma->vm_pgoff << PAGE_SHIFT; - - /* To stop the swapper from even considering these pages */ - vma->vm_flags |= (VM_IO | VM_RESERVED); - - /* Each page, see which map applies */ - for (page = 0; page < size; ){ - map_size = 0; - for (i = 0; map[i].size; i++) - if (map[i].voff == off+page) { - map_size = sbusfb_mmapsize(map[i].size, fbsize); -#ifdef __sparc_v9__ -#define POFF_MASK (PAGE_MASK|0x1UL) -#else -#define POFF_MASK (PAGE_MASK) -#endif - map_offset = (physbase + map[i].poff) & POFF_MASK; - break; - } - if (!map_size){ - page += PAGE_SIZE; - continue; - } - if (page + map_size > size) - map_size = size - page; - r = io_remap_pfn_range(vma, - vma->vm_start + page, - MK_IOSPACE_PFN(iospace, - map_offset >> PAGE_SHIFT), - map_size, - vma->vm_page_prot); - if (r) - return -EAGAIN; - page += map_size; - } - - return 0; -} -EXPORT_SYMBOL(sbusfb_mmap_helper); - -int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg, - struct fb_info *info, - int type, int fb_depth, unsigned long fb_size) -{ - switch(cmd) { - case FBIOGTYPE: { - struct fbtype __user *f = (struct fbtype __user *) arg; - - if (put_user(type, &f->fb_type) || - __put_user(info->var.yres, &f->fb_height) || - __put_user(info->var.xres, &f->fb_width) || - __put_user(fb_depth, &f->fb_depth) || - __put_user(0, &f->fb_cmsize) || - __put_user(fb_size, &f->fb_cmsize)) - return -EFAULT; - return 0; - } - case FBIOPUTCMAP_SPARC: { - struct fbcmap __user *c = (struct fbcmap __user *) arg; - struct fb_cmap cmap; - u16 red, green, blue; - u8 red8, green8, blue8; - unsigned char __user *ured; - unsigned char __user *ugreen; - unsigned char __user *ublue; - int index, count, i; - - if (get_user(index, &c->index) || - __get_user(count, &c->count) || - __get_user(ured, &c->red) || - __get_user(ugreen, &c->green) || - __get_user(ublue, &c->blue)) - return -EFAULT; - - cmap.len = 1; - cmap.red = &red; - cmap.green = &green; - cmap.blue = &blue; - cmap.transp = NULL; - for (i = 0; i < count; i++) { - int err; - - if (get_user(red8, &ured[i]) || - get_user(green8, &ugreen[i]) || - get_user(blue8, &ublue[i])) - return -EFAULT; - - red = red8 << 8; - green = green8 << 8; - blue = blue8 << 8; - - cmap.start = index + i; - err = fb_set_cmap(&cmap, info); - if (err) - return err; - } - return 0; - } - case FBIOGETCMAP_SPARC: { - struct fbcmap __user *c = (struct fbcmap __user *) arg; - unsigned char __user *ured; - unsigned char __user *ugreen; - unsigned char __user *ublue; - struct fb_cmap *cmap = &info->cmap; - int index, count, i; - u8 red, green, blue; - - if (get_user(index, &c->index) || - __get_user(count, &c->count) || - __get_user(ured, &c->red) || - __get_user(ugreen, &c->green) || - __get_user(ublue, &c->blue)) - return -EFAULT; - - if (index + count > cmap->len) - return -EINVAL; - - for (i = 0; i < count; i++) { - red = cmap->red[index + i] >> 8; - green = cmap->green[index + i] >> 8; - blue = cmap->blue[index + i] >> 8; - if (put_user(red, &ured[i]) || - put_user(green, &ugreen[i]) || - put_user(blue, &ublue[i])) - return -EFAULT; - } - return 0; - } - default: - return -EINVAL; - }; -} -EXPORT_SYMBOL(sbusfb_ioctl_helper); |