Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 184 insertions, 0 deletions

diff --git a/drivers/video/sbuslib.c b/drivers/video/sbuslib.c
new file mode 100644
index 00000000000..34f72edba82
--- /dev/null
+++ b/drivers/video/sbuslib.c
@@ -0,0 +1,184 @@
+/* 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);