[PARISC] Fix stifb with IOREMAP and a 64-bit kernel

Kill various warnings when built using ioremap.
Remove stifb_{read,write} functions, which are now obsolete (and stack abusers!)
Disable stifb mmap() functionality on a 64-bit kernel, it will crash the
machine.

Signed-off-by: Helge Deller <deller@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

1 files changed, 6 insertions, 85 deletions

diff --git a/drivers/video/stifb.c b/drivers/video/stifb.c
index 56d71d6e9a72..8d5f35676f9a 100644
--- a/drivers/video/stifb.c
+++ b/drivers/video/stifb.c
@@ -3,7 +3,7 @@
  * Low level Frame buffer driver for HP workstations with 
  * STI (standard text interface) video firmware.
  *
- * Copyright (C) 2001-2005 Helge Deller <deller@gmx.de>
+ * Copyright (C) 2001-2006 Helge Deller <deller@gmx.de>
  * Portions Copyright (C) 2001 Thomas Bogendoerfer <tsbogend@alpha.franken.de>
  * 
  * Based on:
@@ -514,7 +514,7 @@ rattlerSetupPlanes(struct stifb_info *fb)
         SETUP_HW(fb);
         WRITE_BYTE(1, fb, REG_16b1);
 
-        fb_memset(fb->info.fix.smem_start, 0xff,
+        fb_memset((void*)fb->info.fix.smem_start, 0xff,
                 fb->info.var.yres*fb->info.fix.line_length);
     
         CRX24_SET_OVLY_MASK(fb);
@@ -908,83 +908,6 @@ SETUP_HCRX(struct stifb_info *fb)
 
 /* ------------------- driver specific functions --------------------------- */
 
-#define TMPBUFLEN 2048
-
-static ssize_t
-stifb_read(struct file *file, char *buf, size_t count, loff_t *ppos)
-{
-        unsigned long p = *ppos;
-        struct inode *inode = file->f_dentry->d_inode;
-        int fbidx = iminor(inode);
-        struct fb_info *info = registered_fb[fbidx];
-        char tmpbuf[TMPBUFLEN];
-
-        if (!info || ! info->screen_base)
-                return -ENODEV;
-
-        if (p >= info->fix.smem_len)
-            return 0;
-        if (count >= info->fix.smem_len)
-            count = info->fix.smem_len;
-        if (count + p > info->fix.smem_len)
-                count = info->fix.smem_len - p;
-        if (count > sizeof(tmpbuf))
-                count = sizeof(tmpbuf);
-        if (count) {
-            char *base_addr;
-
-            base_addr = info->screen_base;
-            memcpy_fromio(&tmpbuf, base_addr+p, count);
-            count -= copy_to_user(buf, &tmpbuf, count);
-            if (!count)
-                return -EFAULT;
-            *ppos += count;
-        }
-        return count;
-}
-
-static ssize_t
-stifb_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
-{
-        struct inode *inode = file->f_dentry->d_inode;
-        int fbidx = iminor(inode);
-        struct fb_info *info = registered_fb[fbidx];
-        unsigned long p = *ppos;
-        size_t c;
-        int err;
-        char tmpbuf[TMPBUFLEN];
-
-        if (!info || !info->screen_base)
-                return -ENODEV;
-
-        if (p > info->fix.smem_len)
-            return -ENOSPC;
-        if (count >= info->fix.smem_len)
-            count = info->fix.smem_len;
-        err = 0;
-        if (count + p > info->fix.smem_len) {
-            count = info->fix.smem_len - p;
-            err = -ENOSPC;
-        }
-
-        p += (unsigned long)info->screen_base;
-        c = count;
-        while (c) {
-            int len = c > sizeof(tmpbuf) ? sizeof(tmpbuf) : c;
-            err = -EFAULT;
-            if (copy_from_user(&tmpbuf, buf, len))
-                    break;
-            memcpy_toio(p, &tmpbuf, len);
-            c -= len;
-            p += len;
-            buf += len;
-            *ppos += len;
-        }
-        if (count-c)
-                return (count-c);
-        return err;
-}
-
 static int
 stifb_setcolreg(u_int regno, u_int red, u_int green,
               u_int blue, u_int transp, struct fb_info *info)
@@ -1137,8 +1060,6 @@ stifb_init_display(struct stifb_info *fb)
 
 static struct fb_ops stifb_ops = {
         .owner          = THIS_MODULE,
-        .fb_read        = stifb_read,
-        .fb_write       = stifb_write,
         .fb_setcolreg   = stifb_setcolreg,
         .fb_blank       = stifb_blank,
         .fb_fillrect    = cfb_fillrect,
@@ -1162,7 +1083,7 @@ stifb_init_fb(struct sti_struct *sti, int bpp_pref)
         char *dev_name;
         int bpp, xres, yres;
 
-        fb = kmalloc(sizeof(*fb), GFP_ATOMIC);
+        fb = kzalloc(sizeof(*fb), GFP_ATOMIC);
         if (!fb) {
                 printk(KERN_ERR "stifb: Could not allocate stifb structure\n");
                 return -ENODEV;
@@ -1171,7 +1092,6 @@ stifb_init_fb(struct sti_struct *sti, int bpp_pref)
         info = &fb->info;
 
         /* set struct to a known state */
-        memset(fb, 0, sizeof(*fb));
         fix = &info->fix;
         var = &info->var;
 
@@ -1234,7 +1154,7 @@ stifb_init_fb(struct sti_struct *sti, int bpp_pref)
         case S9000_ID_TOMCAT:   /* Dual CRX, behaves else like a CRX */
                 /* FIXME: TomCat supports two heads:
                  * fb.iobase = REGION_BASE(fb_info,3);
-                 * fb.screen_base = (void*) REGION_BASE(fb_info,2);
+                 * fb.screen_base = ioremap_nocache(REGION_BASE(fb_info,2),xxx);
                  * for now we only support the left one ! */
                 xres = fb->ngle_rom.x_size_visible;
                 yres = fb->ngle_rom.y_size_visible;
@@ -1327,7 +1247,8 @@ stifb_init_fb(struct sti_struct *sti, int bpp_pref)
 
         strcpy(fix->id, "stifb");
         info->fbops = &stifb_ops;
-        info->screen_base = (void*) REGION_BASE(fb,1);
+        info->screen_base = ioremap_nocache(REGION_BASE(fb,1), fix->smem_len);
+        info->screen_size = fix->smem_len;
         info->flags = FBINFO_DEFAULT;
         info->pseudo_palette = &fb->pseudo_palette;