Merge are.twiddle.net:/home/rth/BK/linus-2.5

into are.twiddle.net:/home/rth/BK/tga-2.5

drivers/video/tgafb.c

@@ -39,6 +39,9 @@ static int tgafb_setcolreg(unsigned, unsigned, unsigned, unsigned,
 			   unsigned, struct fb_info *);
 static int tgafb_blank(int, struct fb_info *);
 static void tgafb_init_fix(struct fb_info *);
+
+static void tgafb_imageblit(struct fb_info *, struct fb_image *);
+
 static int tgafb_pci_register(struct pci_dev *, const struct pci_device_id *);
 #ifdef MODULE
 static void tgafb_pci_unregister(struct pci_dev *);
@@ -59,7 +62,7 @@ static struct fb_ops tgafb_ops = {
 	.fb_blank		= tgafb_blank,
 	.fb_fillrect		= cfb_fillrect,
 	.fb_copyarea		= cfb_copyarea,
-	.fb_imageblit		= cfb_imageblit,
+	.fb_imageblit		= tgafb_imageblit,
 	.fb_cursor		= soft_cursor,
 };
 
@@ -499,6 +502,256 @@ tgafb_blank(int blank, struct fb_info *info)
 }
 
 
+/*
+ *  Acceleration.
+ */
+
+static void
+tgafb_imageblit(struct fb_info *info, struct fb_image *image)
+{
+	static unsigned char const bitrev[256] = {
+		0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
+		0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
+		0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
+		0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
+		0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
+		0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
+		0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
+		0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
+		0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
+		0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
+		0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
+		0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
+		0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
+		0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
+		0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
+		0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
+		0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
+		0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
+		0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
+		0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
+		0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
+		0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
+		0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
+		0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
+		0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
+		0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
+		0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
+		0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
+		0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
+		0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
+		0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
+		0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
+	};
+
+	struct tga_par *par = (struct tga_par *) info->par;
+	u32 fgcolor, bgcolor, dx, dy, width, height, vxres, vyres, pixelmask;
+	unsigned long rincr, line_length, shift, pos, is8bpp;
+	unsigned long i, j, k;
+	const unsigned char *data;
+	void *regs_base, *fb_base;
+
+	dx = image->dx;
+	dy = image->dy;
+	width = image->width;
+	height = image->height;
+	vxres = info->var.xres_virtual;
+	vyres = info->var.yres_virtual;
+	line_length = info->fix.line_length;
+	rincr = (width + 7) / 8;
+
+	/* Crop the image to the screen.  */
+	if (dx > vxres || dy > vyres)
+		return;
+	if (dx + width > vxres)
+		width = vxres - dx;
+	if (dy + height > vyres)
+		height = vyres - dy;
+
+	/* For copies that aren't pixel expansion, there's little we
+	   can do better than the generic code.  */
+	/* ??? There is a DMA write mode; I wonder if that could be
+	   made to pull the data from the image buffer...  */
+	if (image->depth > 1) {
+		cfb_imageblit(info, image);
+		return;
+	}
+
+	regs_base = par->tga_regs_base;
+	fb_base = par->tga_fb_base;
+	is8bpp = par->tga_type == TGA_TYPE_8PLANE;
+
+	/* Expand the color values to fill 32-bits.  */
+	/* ??? Would be nice to notice colour changes elsewhere, so
+	   that we can do this only when necessary.  */
+	fgcolor = image->fg_color;
+	bgcolor = image->bg_color;
+	if (is8bpp) {
+		fgcolor |= fgcolor << 8;
+		fgcolor |= fgcolor << 16;
+		bgcolor |= bgcolor << 8;
+		bgcolor |= bgcolor << 16;
+	} else {
+		fgcolor = ((u32 *)info->pseudo_palette)[fgcolor];
+		bgcolor = ((u32 *)info->pseudo_palette)[bgcolor];
+	}
+	__raw_writel(fgcolor, regs_base + TGA_FOREGROUND_REG);
+	__raw_writel(bgcolor, regs_base + TGA_BACKGROUND_REG);
+
+	/* Acquire proper alignment; set up the PIXELMASK register
+	   so that we only write the proper character cell.  */
+	pos = dy * line_length + dx;
+	if (is8bpp) {
+		shift = pos & 3;
+		pos &= -4;
+	} else {
+		shift = (pos & 7) >> 2;
+		pos &= -8;
+	}
+
+	data = (const unsigned char *) image->data;
+
+	/* Enable opaque stipple mode.  */
+	__raw_writel((is8bpp
+		      ? TGA_MODE_SBM_8BPP | TGA_MODE_OPAQUE_STIPPLE
+		      : TGA_MODE_SBM_24BPP | TGA_MODE_OPAQUE_STIPPLE),
+		     regs_base + TGA_MODE_REG);
+
+	if (width + shift <= 32) {
+		unsigned long bwidth;
+
+		/* Handle common case of imaging a single character, in
+		   a font less than 32 pixels wide.  */
+
+		pixelmask = (1 << width) - 1;
+		pixelmask <<= shift;
+		__raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
+		wmb();
+
+		bwidth = (width + 7) / 8;
+
+		for (i = 0; i < height; ++i) {
+			u32 mask = 0;
+
+			/* The image data is bit big endian; we need
+			   little endian.  */
+			for (j = 0; j < bwidth; ++j)
+				mask |= bitrev[data[j]] << (j * 8);
+
+			__raw_writel(mask << shift, fb_base + pos);
+
+			pos += line_length;
+			data += rincr;
+		}
+		wmb();
+		__raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG);
+	} else if (shift == 0) {
+		unsigned long pos0 = pos;
+		const unsigned char *data0 = data;
+		unsigned long bincr = (is8bpp ? 8 : 8*4);
+		unsigned long bwidth;
+
+		/* Handle another common case in which accel_putcs
+		   generates a large bitmap, which happens to be aligned.
+		   Allow the tail to be misaligned.  This case is 
+		   interesting because we've not got to hold partial
+		   bytes across the words being written.  */
+
+		wmb();
+
+		bwidth = (width / 8) & -4;
+		for (i = 0; i < height; ++i) {
+			for (j = 0; j < bwidth; j += 4) {
+				u32 mask = 0;
+				for (k = 0; k < 4; ++k)
+					mask |= bitrev[data[j+k]] << (k * 8);
+				__raw_writel(mask, fb_base + pos + j*bincr);
+			}
+			pos += line_length;
+			data += rincr;
+		}
+		wmb();
+
+		pixelmask = (1ul << (width & 31)) - 1;
+		if (pixelmask) {
+			__raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
+			wmb();
+
+			pos = pos0 + bwidth*bincr;
+			data = data0 + bwidth;
+			bwidth = ((width & 31) + 7) / 8;
+
+			for (i = 0; i < height; ++i) {
+				u32 mask = 0;
+				for (k = 0; k < bwidth; ++k)
+					mask |= bitrev[data[k]] << (k * 8);
+				__raw_writel(mask, fb_base + pos);
+				pos += line_length;
+				data += rincr;
+			}
+			wmb();
+			__raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG);
+		}
+	} else {
+		unsigned long pos0 = pos;
+		const unsigned char *data0 = data;
+		unsigned long bincr = (is8bpp ? 8 : 8*4);
+		unsigned long bwidth;
+
+		/* Finally, handle the generic case of misaligned start.
+		   Here we split the write into 16-bit spans.  This allows
+		   us to use only one pixel mask, instead of four as would
+		   be required by writing 24-bit spans.  */
+
+		pixelmask = 0xffff << shift;
+		__raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
+		wmb();
+
+		bwidth = (width / 8) & -2;
+		for (i = 0; i < height; ++i) {
+			for (j = 0; j < bwidth; j += 2) {
+				u32 mask;
+				mask = bitrev[data[j]];
+				mask |= bitrev[data[j+1]] << 8;
+				mask <<= shift;
+				__raw_writel(mask, fb_base + pos + j*bincr);
+			}
+			pos += line_length;
+			data += rincr;
+		}
+		wmb();
+
+		pixelmask = ((1ul << (width & 15)) - 1) << shift;
+		if (pixelmask) {
+			__raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG);
+			wmb();
+
+			pos = pos0 + bwidth*bincr;
+			data = data0 + bwidth;
+			bwidth = (width & 15) > 8;
+
+			for (i = 0; i < height; ++i) {
+				u32 mask = bitrev[data[0]];
+				if (bwidth)
+					mask |= bitrev[data[1]] << 8;
+				mask <<= shift;
+				__raw_writel(mask, fb_base + pos);
+				pos += line_length;
+				data += rincr;
+			}
+			wmb();
+		}
+		__raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG);
+	}
+
+	/* Disable opaque stipple mode.  */
+	__raw_writel((is8bpp
+		      ? TGA_MODE_SBM_8BPP | TGA_MODE_SIMPLE
+		      : TGA_MODE_SBM_24BPP | TGA_MODE_SIMPLE),
+		     regs_base + TGA_MODE_REG);
+}
+
+
 /*
  *  Initialisation
  */

include/video/tgafb.h

@@ -31,7 +31,10 @@
 #define	TGA_24PLANE_FB_OFFSET		0x0804000
 #define	TGA_24PLUSZ_FB_OFFSET		0x1004000
 
+#define TGA_FOREGROUND_REG		0x0020
+#define TGA_BACKGROUND_REG		0x0024
 #define	TGA_PLANEMASK_REG		0x0028
+#define TGA_PIXELMASK_ONESHOT_REG	0x002c
 #define	TGA_MODE_REG			0x0030
 #define	TGA_RASTEROP_REG		0x0034
 #define	TGA_PIXELSHIFT_REG		0x0038
@@ -47,6 +50,14 @@
 #define	TGA_RAMDAC_SETUP_REG		0x00c0
 #define	TGA_BLOCK_COLOR0_REG		0x0140
 #define	TGA_BLOCK_COLOR1_REG		0x0144
+#define	TGA_BLOCK_COLOR2_REG		0x0148
+#define	TGA_BLOCK_COLOR3_REG		0x014c
+#define	TGA_BLOCK_COLOR4_REG		0x0150
+#define	TGA_BLOCK_COLOR5_REG		0x0154
+#define	TGA_BLOCK_COLOR6_REG		0x0158
+#define	TGA_BLOCK_COLOR7_REG		0x015c
+#define TGA_COPY64_SRC			0x0160
+#define TGA_COPY64_DST			0x0164
 #define	TGA_CLOCK_REG			0x01e8
 #define	TGA_RAMDAC_REG			0x01f0
 #define	TGA_CMD_STAT_REG		0x01f8
@@ -76,6 +87,22 @@
 #define TGA_VALID_BLANK			0x02
 #define TGA_VALID_CURSOR		0x04
 
+#define TGA_MODE_SBM_8BPP		0x000
+#define TGA_MODE_SBM_24BPP		0x300
+
+#define TGA_MODE_SIMPLE			0x00
+#define TGA_MODE_SIMPLEZ		0x10
+#define TGA_MODE_OPAQUE_STIPPLE		0x01
+#define TGA_MODE_OPAQUE_FILL		0x21
+#define TGA_MODE_TRANSPARENT_STIPPLE	0x03
+#define TGA_MODE_TRANSPARENT_FILL	0x23
+#define TGA_MODE_BLOCK_STIPPLE		0x0d
+#define TGA_MODE_BLOCK_FILL		0x2d
+#define TGA_MODE_COPY			0x07
+#define TGA_MODE_DMA_READ_COPY_ND	0x17
+#define TGA_MODE_DMA_READ_COPY_D	0x37
+#define TGA_MODE_DMA_WRITE_COPY		0x1f
+
 
 /*
  * Useful defines for managing the ICS1562 PLL clock