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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 4/8] xen/vesa: use the new fb_* functions
Make use of the framebuffer functions previously introduced.
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
xen/drivers/video/vesa.c | 179 +++++++---------------------------------------
1 files changed, 26 insertions(+), 153 deletions(-)
diff --git a/xen/drivers/video/vesa.c b/xen/drivers/video/vesa.c
index aaf8b23..778cfdf 100644
--- a/xen/drivers/video/vesa.c
+++ b/xen/drivers/video/vesa.c
@@ -13,20 +13,15 @@
#include <asm/io.h>
#include <asm/page.h>
#include "font.h"
+#include "fb.h"
#define vlfb_info vga_console_info.u.vesa_lfb
-#define text_columns (vlfb_info.width / font->width)
-#define text_rows (vlfb_info.height / font->height)
-static void vesa_redraw_puts(const char *s);
-static void vesa_scroll_puts(const char *s);
+static void lfb_flush(void);
-static unsigned char *lfb, *lbuf, *text_buf;
-static unsigned int *__initdata line_len;
+static unsigned char *lfb;
static const struct font_desc *font;
static bool_t vga_compat;
-static unsigned int pixel_on;
-static unsigned int xpos, ypos;
static unsigned int vram_total;
integer_param("vesa-ram", vram_total);
@@ -87,29 +82,26 @@ void __init vesa_early_init(void)
void __init vesa_init(void)
{
- if ( !font )
- goto fail;
-
- lbuf = xmalloc_bytes(vlfb_info.bytes_per_line);
- if ( !lbuf )
- goto fail;
+ struct fb_prop fbp;
- text_buf = xzalloc_bytes(text_columns * text_rows);
- if ( !text_buf )
- goto fail;
+ if ( !font )
+ return;
- line_len = xzalloc_array(unsigned int, text_columns);
- if ( !line_len )
- goto fail;
+ fbp.font = font;
+ fbp.bits_per_pixel = vlfb_info.bits_per_pixel;
+ fbp.bytes_per_line = vlfb_info.bytes_per_line;
+ fbp.width = vlfb_info.width;
+ fbp.height = vlfb_info.height;
+ fbp.flush = lfb_flush;
+ fbp.text_columns = vlfb_info.width / font->width;
+ fbp.text_rows = vlfb_info.height / font->height;
- lfb = ioremap(vlfb_info.lfb_base, vram_remap);
+ fbp.lfb = lfb = ioremap(vlfb_info.lfb_base, vram_remap);
if ( !lfb )
- goto fail;
+ return;
memset(lfb, 0, vram_remap);
- video_puts = vesa_redraw_puts;
-
printk(XENLOG_INFO "vesafb: framebuffer at %#x, mapped to 0x%p, "
"using %uk, total %uk\n",
vlfb_info.lfb_base, lfb,
@@ -131,7 +123,7 @@ void __init vesa_init(void)
{
/* Light grey in truecolor. */
unsigned int grey = 0xaaaaaaaa;
- pixel_on =
+ fbp.pixel_on =
((grey >> (32 - vlfb_info. red_size)) << vlfb_info. red_pos) |
((grey >> (32 - vlfb_info.green_size)) << vlfb_info.green_pos) |
((grey >> (32 - vlfb_info. blue_size)) << vlfb_info. blue_pos);
@@ -139,15 +131,14 @@ void __init vesa_init(void)
else
{
/* White(ish) in default pseudocolor palette. */
- pixel_on = 7;
+ fbp.pixel_on = 7;
}
- return;
-
- fail:
- xfree(lbuf);
- xfree(text_buf);
- xfree(line_len);
+ if ( fb_init(fbp) < 0 )
+ return;
+ if ( fb_alloc() < 0 )
+ return;
+ video_puts = fb_redraw_puts;
}
#include <asm/mtrr.h>
@@ -192,8 +183,8 @@ void __init vesa_endboot(bool_t keep)
{
if ( keep )
{
- xpos = 0;
- video_puts = vesa_scroll_puts;
+ video_puts = fb_scroll_puts;
+ fb_cr();
}
else
{
@@ -202,124 +193,6 @@ void __init vesa_endboot(bool_t keep)
memset(lfb + i * vlfb_info.bytes_per_line, 0,
vlfb_info.width * bpp);
lfb_flush();
+ fb_free();
}
-
- xfree(line_len);
-}
-
-/* Render one line of text to given linear framebuffer line. */
-static void vesa_show_line(
- const unsigned char *text_line,
- unsigned char *video_line,
- unsigned int nr_chars,
- unsigned int nr_cells)
-{
- unsigned int i, j, b, bpp, pixel;
-
- bpp = (vlfb_info.bits_per_pixel + 7) >> 3;
-
- for ( i = 0; i < font->height; i++ )
- {
- unsigned char *ptr = lbuf;
-
- for ( j = 0; j < nr_chars; j++ )
- {
- const unsigned char *bits = font->data;
- bits += ((text_line[j] * font->height + i) *
- ((font->width + 7) >> 3));
- for ( b = font->width; b--; )
- {
- pixel = (*bits & (1u<<b)) ? pixel_on : 0;
- memcpy(ptr, &pixel, bpp);
- ptr += bpp;
- }
- }
-
- memset(ptr, 0, (vlfb_info.width - nr_chars * font->width) * bpp);
- memcpy(video_line, lbuf, nr_cells * font->width * bpp);
- video_line += vlfb_info.bytes_per_line;
- }
-}
-
-/* Fast mode which redraws all modified parts of a 2D text buffer. */
-static void __init vesa_redraw_puts(const char *s)
-{
- unsigned int i, min_redraw_y = ypos;
- char c;
-
- /* Paste characters into text buffer. */
- while ( (c = *s++) != '\0' )
- {
- if ( (c == '\n') || (xpos >= text_columns) )
- {
- if ( ++ypos >= text_rows )
- {
- min_redraw_y = 0;
- ypos = text_rows - 1;
- memmove(text_buf, text_buf + text_columns,
- ypos * text_columns);
- memset(text_buf + ypos * text_columns, 0, xpos);
- }
- xpos = 0;
- }
-
- if ( c != '\n' )
- text_buf[xpos++ + ypos * text_columns] = c;
- }
-
- /* Render modified section of text buffer to VESA linear framebuffer. */
- for ( i = min_redraw_y; i <= ypos; i++ )
- {
- const unsigned char *line = text_buf + i * text_columns;
- unsigned int width;
-
- for ( width = text_columns; width; --width )
- if ( line[width - 1] )
- break;
- vesa_show_line(line,
- lfb + i * font->height * vlfb_info.bytes_per_line,
- width, max(line_len[i], width));
- line_len[i] = width;
- }
-
- lfb_flush();
-}
-
-/* Slower line-based scroll mode which interacts better with dom0. */
-static void vesa_scroll_puts(const char *s)
-{
- unsigned int i;
- char c;
-
- while ( (c = *s++) != '\0' )
- {
- if ( (c == '\n') || (xpos >= text_columns) )
- {
- unsigned int bytes = (vlfb_info.width *
- ((vlfb_info.bits_per_pixel + 7) >> 3));
- unsigned char *src = lfb + font->height * vlfb_info.bytes_per_line;
- unsigned char *dst = lfb;
-
- /* New line: scroll all previous rows up one line. */
- for ( i = font->height; i < vlfb_info.height; i++ )
- {
- memcpy(dst, src, bytes);
- src += vlfb_info.bytes_per_line;
- dst += vlfb_info.bytes_per_line;
- }
-
- /* Render new line. */
- vesa_show_line(
- text_buf,
- lfb + (text_rows-1) * font->height * vlfb_info.bytes_per_line,
- xpos, text_columns);
-
- xpos = 0;
- }
-
- if ( c != '\n' )
- text_buf[xpos++] = c;
- }
-
- lfb_flush();
}
--
1.7.2.5
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