patch-2.1.115 linux/drivers/sbus/char/sunfb.c

• Lines: 320
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.114/linux/drivers/sbus/char/sunfb.c
• Orig date: Mon Jan 12 15:15:45 1998

diff -u --recursive --new-file v2.1.114/linux/drivers/sbus/char/sunfb.c linux/drivers/sbus/char/sunfb.c
@@ -1,319 +0,0 @@
-/* $Id: sunfb.c,v 1.29 1997/09/20 20:47:26 davem Exp $
- * sunfb.c: Sun generic frame buffer support.
- *
- * Copyright (C) 1995, 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- * 
- * Added getcmap ioctl, may, 96
- * Support for multiple fbs, sep, 96
- */
-
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/kd.h>
-#include <linux/malloc.h>
-#include <linux/major.h>
-#include <linux/mm.h>
-#include <linux/types.h>
-#include <linux/proc_fs.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/bitops.h>
-#include <asm/oplib.h>
-#include <asm/sbus.h>
-#include <asm/fbio.h>
-#include <asm/io.h>
-
-#include <linux/kbd_kern.h>
-#include <linux/vt_kern.h>
-#include <linux/consolemap.h>
-#include <linux/selection.h>
-#include <linux/console_struct.h>
-
-#include "fb.h"
-
-extern void set_other_palette (int);
-extern void set_cursor (int);
-
-#define FB_SETUP(err) \
-	int minor = FB_DEV (file->f_dentry->d_inode->i_rdev); \
-\
-	if (minor >= fbinfos || \
-	    fbinfo [minor].type.fb_type == FBTYPE_NOTYPE) \
-		return -(err);
-
-static int
-fb_open (struct inode * inode, struct file * file)
-{
-	FB_SETUP(EBADF)
-	if (fbinfo [minor].open)
-		return -EBUSY;
-	fbinfo [minor].mmaped = 0;
-	fbinfo [minor].open = 1;
-	return 0;
-}
-
-static int
-fb_ioctl (struct inode *inode, struct file *file, uint cmd, unsigned long arg)
-{
-	fbinfo_t *fb;
-	struct fbcmap *cmap;
-	int i;
-	FB_SETUP(EBADF)
-	
-	fb = &fbinfo [minor];
-	
-	switch (cmd){
-	case FBIOGTYPE:		/* return frame buffer type */
-		copy_to_user_ret((struct fbtype *)arg, &fb->type, sizeof(struct fbtype), -EFAULT);
-		break;
-	case FBIOGATTR:{
-		struct fbgattr *fba = (struct fbgattr *) arg;
-		
-		i = verify_area (VERIFY_WRITE, (void *) arg, sizeof (struct fbgattr));
-		if (i) return i;
-		__put_user_ret(fb->real_type, &fba->real_type, -EFAULT);
-		__put_user_ret(0, &fba->owner, -EFAULT);
-		__copy_to_user_ret(&fba->fbtype, &fb->type,
-				   sizeof(struct fbtype), -EFAULT);
-		__put_user_ret(0, &fba->sattr.flags, -EFAULT);
-		__put_user_ret(fb->type.fb_type, &fba->sattr.emu_type, -EFAULT);
-		__put_user_ret(-1, &fba->sattr.dev_specific[0], -EFAULT);
-		__put_user_ret(fb->type.fb_type, &fba->emu_types[0], -EFAULT);
-		for (i = 1; i < 4; i++)
-			put_user_ret(fb->emulations[i], &fba->emu_types[i], -EFAULT);
-		break;
-	}
-	case FBIOSATTR:
-		i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbsattr));
-		if (i) return i;
-		return -EINVAL;
-	case FBIOSVIDEO:
- 		if (fb == fbinfo && vt_cons[fg_console]->vc_mode == KD_TEXT)
- 			break;
-		get_user_ret(i, (int *)arg, -EFAULT);
-		if (i){
-			if (!fb->blanked || !fb->unblank)
-				break;
-			if (!minor || (fb->open && fb->mmaped))
-				(*fb->unblank)(fb);
-			fb->blanked = 0;
-		} else {
-			if (fb->blanked || !fb->blank)
-				break;
-			(*fb->blank)(fb);
-			fb->blanked = 1;
-		}
-		break;
-	case FBIOGVIDEO:
-		put_user_ret(fb->blanked, (int *) arg, -EFAULT);
-		break;
-	case FBIOGETCMAP: {
-		char *rp, *gp, *bp;
-		int end, count, index;
-
-		if (!fb->loadcmap)
-			return -EINVAL;
-		i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbcmap));
-		if (i) return i;
-		cmap = (struct fbcmap *) arg;
-		__get_user_ret(count, &cmap->count, -EFAULT);
-		__get_user_ret(index, &cmap->index, -EFAULT);
-		if ((index < 0) || (index > 255))
-			return -EINVAL;
-		if (index + count > 256)
-			count = 256 - index;
-		__get_user_ret(rp, &cmap->red, -EFAULT);
-		__get_user_ret(gp, &cmap->green, -EFAULT);
-		__get_user_ret(bp, &cmap->blue, -EFAULT);
-		if(verify_area (VERIFY_WRITE, rp, count))  return -EFAULT;
-		if(verify_area (VERIFY_WRITE, gp, count))  return -EFAULT;
-		if(verify_area (VERIFY_WRITE, bp, count))  return -EFAULT;
-		end = index + count;
-		for (i = index; i < end; i++){
-			__put_user_ret(fb->color_map CM(i,0), rp, -EFAULT);
-			__put_user_ret(fb->color_map CM(i,1), gp, -EFAULT);
-			__put_user_ret(fb->color_map CM(i,2), bp, -EFAULT);
-			rp++; gp++; bp++;
-		}
-		(*fb->loadcmap)(fb, index, count);
-                break;			
-
-	}
-	case FBIOPUTCMAP: {	/* load color map entries */
-		char *rp, *gp, *bp;
-		int end, count, index;
-		
-		if (!fb->loadcmap)
-			return -EINVAL;
-		i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbcmap));
-		if (i) return i;
-		cmap = (struct fbcmap *) arg;
-		__get_user_ret(count, &cmap->count, -EFAULT);
-		__get_user_ret(index, &cmap->index, -EFAULT);
-		if ((index < 0) || (index > 255))
-			return -EINVAL;
-		if (index + count > 256)
-			count = 256 - index;
-		__get_user_ret(rp, &cmap->red, -EFAULT);
-		__get_user_ret(gp, &cmap->green, -EFAULT);
-		__get_user_ret(bp, &cmap->blue, -EFAULT);
-		if(verify_area (VERIFY_READ, rp, count)) return -EFAULT;
-		if(verify_area (VERIFY_READ, gp, count)) return -EFAULT;
-		if(verify_area (VERIFY_READ, bp, count)) return -EFAULT;
-
-		end = index + count;
-		for (i = index; i < end; i++){
-			__get_user_ret(fb->color_map CM(i,0), rp, -EFAULT);
-			__get_user_ret(fb->color_map CM(i,1), gp, -EFAULT);
-			__get_user_ret(fb->color_map CM(i,2), bp, -EFAULT);
-			rp++; gp++; bp++;
-		}
-		(*fb->loadcmap)(fb, index, count);
-                break;			
-	}
-
-	case FBIOGCURMAX: {
-		struct fbcurpos *p = (struct fbcurpos *) arg;
-		if (!fb->setcursor) return -EINVAL;
-		if(verify_area (VERIFY_WRITE, p, sizeof (struct fbcurpos)))
-			return -EFAULT;
-		__put_user_ret(fb->cursor.hwsize.fbx, &p->fbx, -EFAULT);
-		__put_user_ret(fb->cursor.hwsize.fby, &p->fby, -EFAULT);
-		break;
-	}
-	case FBIOSCURSOR:
-		if (!fb->setcursor) return -EINVAL;
- 		if (fb == fbinfo) {
- 			if (vt_cons[fg_console]->vc_mode == KD_TEXT)
- 				return -EINVAL; /* Don't let graphics programs hide our nice text cursor */
- 			sbus_hw_cursor_shown = 0; /* Forget state of our text cursor */
-		}
-		return sbus_hw_scursor ((struct fbcursor *) arg, fb);
-
-	case FBIOSCURPOS:
-		if (!fb->setcursor) return -EINVAL;
-                /* Don't let graphics programs move our nice text cursor */
- 		if (fb == fbinfo) {
- 			if (vt_cons[fg_console]->vc_mode == KD_TEXT)
- 				return -EINVAL; /* Don't let graphics programs move our nice text cursor */
- 		}
-		i= verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbcurpos));
-		if (i) return i;
-		fb->cursor.cpos = *(struct fbcurpos *)arg;
-		(*fb->setcursor) (fb);
-		break;
-		
-	default:
-		if (fb->ioctl){
-			i = fb->ioctl (inode, file, cmd, arg, fb);
-			if (i == -ENOSYS) {
-				printk ("[[FBIO: %8.8x]]\n", cmd);
-				return -EINVAL;
-			}
-			return i;
-		}
-		printk ("[[FBIO: %8.8x]]\n", cmd);
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static int
-fb_close (struct inode * inode, struct file *file)
-{
-	fbinfo_t *fb;
-	struct fbcursor cursor;
-	FB_SETUP(EBADF)	
-
-	fb = &fbinfo[minor];
-	
-	if (!minor)
-		vt_cons [fb->vtconsole]->vc_mode = KD_TEXT;
-
-	/* Leaving graphics mode, turn off the cursor */
-	if (fb->mmaped) {
-		fb->clear_fb (minor);
-		if (!minor && suncons_ops.clear_margin)
-			suncons_ops.clear_margin();
-	}
-	cursor.set    = FB_CUR_SETCUR;
-	cursor.enable = 0;
-	
-	/* Reset the driver */
-	if (fb->reset)
-		fb->reset(fb);
-
-	if (fb->open)
-		fb->open = 0;
-	fb_ioctl (inode, file, FBIOSCURPOS, (unsigned long) &cursor);
-	set_other_palette (minor);
-	if (!minor) {
-		render_screen ();
-		set_cursor (fg_console);
-	} else if (fb->blank)
-		(*fb->blank)(fb);
-	return 0;
-}
-
-static int
-fb_mmap (struct file *file, struct vm_area_struct *vma)
-{
-	fbinfo_t *fb;
-	FB_SETUP(ENXIO)
-
-	fb = &fbinfo [minor];
-
-	if (fb->mmap){
-		int v;
-		
-		v = (*fb->mmap)(file->f_dentry->d_inode, file, vma, fb->base, fb);
-		if (v)
-			return v;
-		vma->vm_flags |= VM_IO;
-		if (!fb->mmaped) {
-			fb->mmaped = 1;
-			if (!minor) {
-				fb->vtconsole = fg_console;
-				vt_cons [fg_console]->vc_mode = KD_GRAPHICS;
-			} else {
-				if (fb->unblank && !fb->blanked)
-					(*fb->unblank)(fb);
-			}
-		}
-		return 0;
-	} else
-		return -ENXIO;
-}
-
-static struct file_operations graphdev_fops =
-{
-	NULL,			/* lseek */
-	NULL,			/* read */
-	NULL,			/* write */
-	NULL,			/* readdir */
-	NULL,			/* poll */
-	fb_ioctl,
-	fb_mmap,
-	fb_open,		/* open */
-	fb_close,		/* close */
-};
-
-__initfunc(int fb_init (void))
-{
-	/* Register the frame buffer device */
-	if (register_chrdev (GRAPHDEV_MAJOR, "graphics", &graphdev_fops)){
-		printk ("Could not register graphics device\n");
-		return -EIO;
-	}
-	return 0; /* success */
-}