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Commit b8209b36 authored by Ben Collins's avatar Ben Collins Committed by Keith M. Wesolowski
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[VIDEO]: Revert cfbimgblt.c back to a working state on 64-bit.

parent 0b496d9d
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Showing with 54 additions and 75 deletions
drivers/video/cfbimgblt.c
View file @ b8209b36
......@@ -73,8 +73,11 @@ static u32 cfb_tab32[] = {
0x00000000, 0xffffffff
};
#define FB_WRITEL fb_writel
#define FB_READL fb_readl
#if defined (__BIG_ENDIAN)
#define LEFT_POS(bpp) (BITS_PER_LONG - bpp)
#define LEFT_POS(bpp) (32 - bpp)
#define SHIFT_HIGH(val, bits) ((val) >> (bits))
#define SHIFT_LOW(val, bits) ((val) << (bits))
#else
......@@ -83,47 +86,27 @@ static u32 cfb_tab32[] = {
#define SHIFT_LOW(val, bits) ((val) >> (bits))
#endif
#if BITS_PER_LONG == 32
#define FB_WRITEL fb_writel
#define FB_READL fb_readl
#define INIT_FASTPATH {}
#define FASTPATH fb_writel((end_mask & eorx)^bgx, dst++)
#else
#define FB_WRITEL fb_writeq
#define FB_READL fb_readq
#define INIT_FASTPATH unsigned long val = 0, bpl = 0
#define FASTPATH { \
val |= SHIFT_HIGH((end_mask & eorx)^bgx, bpl); \
bpl += 32; \
bpl &= BITS_PER_LONG - 1; \
if (!bpl) { \
FB_WRITEL(val, dst++); \
val = 0; \
} \
}
#endif
static inline void color_imageblit(const struct fb_image *image,
struct fb_info *p, u8 *dst1,
unsigned long start_index,
unsigned long pitch_index)
u32 start_index,
u32 pitch_index)
{
/* Draw the penguin */
unsigned long *dst, *dst2, color = 0, val, shift;
u32 *dst, *dst2, color = 0, val, shift;
int i, n, bpp = p->var.bits_per_pixel;
unsigned long null_bits = BITS_PER_LONG - bpp;
u32 null_bits = 32 - bpp;
u32 *palette = (u32 *) p->pseudo_palette;
u8 *src = (u8 *) image->data;
const u8 *src = image->data;
dst2 = (unsigned long *) dst1;
dst2 = (u32 *) dst1;
for (i = image->height; i--; ) {
dst = (unsigned long *) dst1;
n = image->width;
shift = val = 0;
dst = (u32 *) dst1;
shift = 0;
val = 0;
if (start_index) {
unsigned long start_mask = ~(SHIFT_HIGH(~0UL,
start_index));
u32 start_mask = ~(SHIFT_HIGH(~(u32)0, start_index));
val = FB_READL(dst) & start_mask;
shift = start_index;
}
......@@ -139,14 +122,14 @@ static inline void color_imageblit(const struct fb_image *image,
FB_WRITEL(val, dst++);
val = (shift == null_bits) ? 0 :
SHIFT_LOW(color,BITS_PER_LONG - shift);
SHIFT_LOW(color, 32 - shift);
}
shift += bpp;
shift &= (BITS_PER_LONG - 1);
shift &= (32 - 1);
src++;
}
if (shift) {
unsigned long end_mask = SHIFT_HIGH(~0UL, shift);
u32 end_mask = SHIFT_HIGH(~(u32)0, shift);
FB_WRITEL((FB_READL(dst) & end_mask) | val, dst);
}
......@@ -154,41 +137,39 @@ static inline void color_imageblit(const struct fb_image *image,
if (pitch_index) {
dst2 += p->fix.line_length;
dst1 = (char *) dst2;
(unsigned long) dst1 &= ~(sizeof(unsigned long) - 1);
(unsigned long) dst1 &= ~(sizeof(u32) - 1);
start_index += pitch_index;
start_index &= BITS_PER_LONG - 1;
start_index &= 32 - 1;
}
}
}
static inline void slow_imageblit(const struct fb_image *image,
struct fb_info *p, u8 *dst1,
unsigned long fgcolor,
unsigned long bgcolor,
unsigned long start_index,
unsigned long pitch_index)
static inline void slow_imageblit(const struct fb_image *image, struct fb_info *p,
u8 *dst1, u32 fgcolor,
u32 bgcolor,
u32 start_index,
u32 pitch_index)
{
unsigned long shift, color = 0, bpp = p->var.bits_per_pixel;
unsigned long *dst, *dst2, val, pitch = p->fix.line_length;
unsigned long null_bits = BITS_PER_LONG - bpp;
unsigned long spitch = (image->width+7)/8;
const char *src = image->data, *s;
unsigned long i, j, l;
u32 shift, color = 0, bpp = p->var.bits_per_pixel;
u32 *dst, *dst2, val, pitch = p->fix.line_length;
u32 null_bits = 32 - bpp;
u32 spitch = (image->width+7)/8;
const u8 *src = image->data, *s;
u32 i, j, l;
dst2 = (unsigned long *) dst1;
dst2 = (u32 *) dst1;
for (i = image->height; i--; ) {
dst = (unsigned long *) dst1;
j = image->width;
shift = val = 0;
s = src;
l = 8;
j = image->width;
dst = (u32 *) dst1;
s = src;
/* write leading bits */
if (start_index) {
unsigned long start_mask = ~(SHIFT_HIGH(~0UL,
start_index));
u32 start_mask = ~(SHIFT_HIGH(~(u32)0, start_index));
val = FB_READL(dst) & start_mask;
shift = start_index;
}
......@@ -203,16 +184,16 @@ static inline void slow_imageblit(const struct fb_image *image,
if (shift >= null_bits) {
FB_WRITEL(val, dst++);
val = (shift == null_bits) ? 0 :
SHIFT_LOW(color,BITS_PER_LONG - shift);
SHIFT_LOW(color,32 - shift);
}
shift += bpp;
shift &= (BITS_PER_LONG - 1);
shift &= (32 - 1);
if (!l) { l = 8; s++; };
}
/* write trailing bits */
if (shift) {
unsigned long end_mask = SHIFT_HIGH(~0UL, shift);
u32 end_mask = SHIFT_HIGH(~(u32)0, shift);
FB_WRITEL((FB_READL(dst) & end_mask) | val, dst);
}
......@@ -222,10 +203,10 @@ static inline void slow_imageblit(const struct fb_image *image,
if (pitch_index) {
dst2 += pitch;
dst1 = (char *) dst2;
(unsigned long) dst1 &= ~(sizeof(unsigned long) - 1);
(unsigned long) dst1 &= ~(sizeof(u32) - 1);
start_index += pitch_index;
start_index &= BITS_PER_LONG - 1;
start_index &= 32 - 1;
}
}
......@@ -239,15 +220,15 @@ static inline void slow_imageblit(const struct fb_image *image,
* fix->line_legth is divisible by 4;
* beginning and end of a scanline is dword aligned
*/
static inline void fast_imageblit(const struct fb_image *image,
struct fb_info *p, u8 *dst1,
u32 fgcolor, u32 bgcolor)
static inline void fast_imageblit(const struct fb_image *image, struct fb_info *p,
u8 *dst1, u32 fgcolor,
u32 bgcolor)
{
u32 fgx = fgcolor, bgx = bgcolor, bpp = p->var.bits_per_pixel;
u32 ppw = BITS_PER_LONG/bpp, spitch = (image->width + 7)/8;
u32 ppw = 32/bpp, spitch = (image->width + 7)/8;
u32 bit_mask, end_mask, eorx, shift;
const char *s = image->data, *src;
unsigned long *dst;
u32 *dst;
u32 *tab = NULL;
int i, j, k;
......@@ -275,14 +256,12 @@ static inline void fast_imageblit(const struct fb_image *image,
k = image->width/ppw;
for (i = image->height; i--; ) {
INIT_FASTPATH;
dst = (unsigned long *) dst1, shift = 8; src = s;
dst = (u32 *) dst1, shift = 8; src = s;
for (j = k; j--; ) {
shift -= ppw;
end_mask = tab[(*src >> shift) & bit_mask];
FASTPATH;
FB_WRITEL((end_mask & eorx)^bgx, dst++);
if (!shift) { shift = 8; src++; }
}
dst1 += p->fix.line_length;
......@@ -292,8 +271,8 @@ static inline void fast_imageblit(const struct fb_image *image,
void cfb_imageblit(struct fb_info *p, const struct fb_image *image)
{
unsigned long fgcolor, bgcolor, start_index, bitstart, pitch_index = 0;
unsigned long bpl = sizeof(unsigned long), bpp = p->var.bits_per_pixel;
u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0;
u32 bpl = sizeof(u32), bpp = p->var.bits_per_pixel;
u32 width = image->width, height = image->height;
u32 dx = image->dx, dy = image->dy;
int x2, y2, vxres, vyres;
......@@ -319,7 +298,7 @@ void cfb_imageblit(struct fb_info *p, const struct fb_image *image)
height = y2 - dy;
bitstart = (dy * p->fix.line_length * 8) + (dx * bpp);
start_index = bitstart & (BITS_PER_LONG - 1);
start_index = bitstart & (32 - 1);
pitch_index = (p->fix.line_length & (bpl - 1)) * 8;
bitstart /= 8;
......@@ -339,14 +318,14 @@ void cfb_imageblit(struct fb_info *p, const struct fb_image *image)
bgcolor = image->bg_color;
}
if (BITS_PER_LONG % bpp == 0 && !start_index && !pitch_index &&
((width & (BITS_PER_LONG/bpp-1)) == 0) &&
if (32 % bpp == 0 && !start_index && !pitch_index &&
((width & (32/bpp-1)) == 0) &&
bpp >= 8 && bpp <= 32)
fast_imageblit(image, p, dst1, fgcolor, bgcolor);
else
slow_imageblit(image, p, dst1, fgcolor, bgcolor,
start_index, pitch_index);
} else if (image->depth <= bpp)
} else if (image->depth == bpp)
color_imageblit(image, p, dst1, start_index, pitch_index);
}
......
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