drivers/video/fbdev/mb862xx/mb862xxfb_accel.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * drivers/mb862xx/mb862xxfb_accel.c
  *
  * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver acceleration support
  *
  * (C) 2007 Alexander Shishkin <virtuoso@slind.org>
  * (C) 2009 Valentin Sitdikov <v.sitdikov@gmail.com>
  * (C) 2009 Siemens AG
  */
 #include <linux/fb.h>
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/slab.h>

 #include "mb862xxfb.h"
 #include "mb862xx_reg.h"
 #include "mb862xxfb_accel.h"

 static void mb862xxfb_write_fifo(u32 count, u32 *data, struct fb_info *info)
 {
 	struct mb862xxfb_par *par = info->par;
 	static u32 free;

 	u32 total = 0;
 	while (total < count) {
 		if (free) {
 			outreg(geo, GDC_GEO_REG_INPUT_FIFO, data[total]);
 			total++;
 			free--;
 		} else {
 			free = (u32) inreg(draw, GDC_REG_FIFO_COUNT);
 		}
 	}
 }

 static void mb86290fb_copyarea(struct fb_info *info,
 			       const struct fb_copyarea *area)
 {
 	__u32 cmd[6];

 	cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP;
 	/* Set raster operation */
 	cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9);
 	cmd[2] = GDC_TYPE_BLTCOPYP << 24;

 	if (area->sx >= area->dx && area->sy >= area->dy)
 		cmd[2] |= GDC_CMD_BLTCOPY_TOP_LEFT << 16;
 	else if (area->sx >= area->dx && area->sy <= area->dy)
 		cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_LEFT << 16;
 	else if (area->sx <= area->dx && area->sy >= area->dy)
 		cmd[2] |= GDC_CMD_BLTCOPY_TOP_RIGHT << 16;
 	else
 		cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_RIGHT << 16;

 	cmd[3] = (area->sy << 16) | area->sx;
 	cmd[4] = (area->dy << 16) | area->dx;
 	cmd[5] = (area->height << 16) | area->width;
 	mb862xxfb_write_fifo(6, cmd, info);
 }

 /*
  * Fill in the cmd array /GDC FIFO commands/ to draw a 1bit image.
  * Make sure cmd has enough room!
  */
 static void mb86290fb_imageblit1(u32 *cmd, u16 step, u16 dx, u16 dy,
 				 u16 width, u16 height, u32 fgcolor,
 				 u32 bgcolor, const struct fb_image *image,
 				 struct fb_info *info)
 {
 	int i;
 	unsigned const char *line;
 	u16 bytes;

 	/* set colors and raster operation regs */
 	cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP;
 	/* Set raster operation */
 	cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9);
 	cmd[2] =
 	    (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16);
 	cmd[3] = fgcolor;
 	cmd[4] =
 	    (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_BACK_COLOR << 16);
 	cmd[5] = bgcolor;

 	i = 0;
 	line = image->data;
 	bytes = (image->width + 7) >> 3;

 	/* and the image */
 	cmd[6] = (GDC_TYPE_DRAWBITMAPP << 24) |
 	    (GDC_CMD_BITMAP << 16) | (2 + (step * height));
 	cmd[7] = (dy << 16) | dx;
 	cmd[8] = (height << 16) | width;

 	while (i < height) {
 		memcpy(&cmd[9 + i * step], line, step << 2);
 #ifdef __LITTLE_ENDIAN
 		{
 			int k = 0;
 			for (k = 0; k < step; k++)
 				cmd[9 + i * step + k] =
 				    cpu_to_be32(cmd[9 + i * step + k]);
 		}
 #endif
 		line += bytes;
 		i++;
 	}
 }

 /*
  * Fill in the cmd array /GDC FIFO commands/ to draw a 8bit image.
  * Make sure cmd has enough room!
  */
 static void mb86290fb_imageblit8(u32 *cmd, u16 step, u16 dx, u16 dy,
 				 u16 width, u16 height, u32 fgcolor,
 				 u32 bgcolor, const struct fb_image *image,
 				 struct fb_info *info)
 {
 	int i, j;
 	unsigned const char *line, *ptr;
 	u16 bytes;

 	cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) |
 	    (GDC_CMD_BLT_DRAW << 16) | (2 + (height * step));
 	cmd[1] = (dy << 16) | dx;
 	cmd[2] = (height << 16) | width;

 	i = 0;
 	line = image->data;
 	bytes = image->width;

 	while (i < height) {
 		ptr = line;
 		for (j = 0; j < step; j++) {
 			cmd[3 + i * step + j] =
 			    (((u32 *) (info->pseudo_palette))[*ptr]) & 0xffff;
 			ptr++;
 			cmd[3 + i * step + j] |=
 			    ((((u32 *) (info->
 					pseudo_palette))[*ptr]) & 0xffff) << 16;
 			ptr++;
 		}

 		line += bytes;
 		i++;
 	}
 }

 /*
  * Fill in the cmd array /GDC FIFO commands/ to draw a 16bit image.
  * Make sure cmd has enough room!
  */
 static void mb86290fb_imageblit16(u32 *cmd, u16 step, u16 dx, u16 dy,
 				  u16 width, u16 height, u32 fgcolor,
 				  u32 bgcolor, const struct fb_image *image,
 				  struct fb_info *info)
 {
 	int i;
 	unsigned const char *line;
 	u16 bytes;

 	i = 0;
 	line = image->data;
 	bytes = image->width << 1;

 	cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) |
 	    (GDC_CMD_BLT_DRAW << 16) | (2 + step * height);
 	cmd[1] = (dy << 16) | dx;
 	cmd[2] = (height << 16) | width;

 	while (i < height) {
 		memcpy(&cmd[3 + i * step], line, step);
 		line += bytes;
 		i++;
 	}
 }

 static void mb86290fb_imageblit(struct fb_info *info,
 				const struct fb_image *image)
 {
 	u32 *cmd = NULL;
 	void (*cmdfn) (u32 *, u16, u16, u16, u16, u16, u32, u32,
 		       const struct fb_image *, struct fb_info *) = NULL;
 	u32 cmdlen;
 	u32 fgcolor = 0, bgcolor = 0;
 	u16 step;

 	u16 width = image->width, height = image->height;
 	u16 dx = image->dx, dy = image->dy;
 	int x2, y2, vxres, vyres;

 	x2 = image->dx + image->width;
 	y2 = image->dy + image->height;
 	vxres = info->var.xres_virtual;
 	vyres = info->var.yres_virtual;
 	x2 = min(x2, vxres);
 	y2 = min(y2, vyres);
 	width = x2 - dx;
 	height = y2 - dy;

 	switch (image->depth) {
 	case 1:
 		step = (width + 31) >> 5;
 		cmdlen = 9 + height * step;
 		cmdfn = mb86290fb_imageblit1;
 		if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
 		    info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
 			fgcolor =
 			    ((u32 *) (info->pseudo_palette))[image->fg_color];
 			bgcolor =
 			    ((u32 *) (info->pseudo_palette))[image->bg_color];
 		} else {
 			fgcolor = image->fg_color;
 			bgcolor = image->bg_color;
 		}

 		break;

 	case 8:
 		step = (width + 1) >> 1;
 		cmdlen = 3 + height * step;
 		cmdfn = mb86290fb_imageblit8;
 		break;

 	case 16:
 		step = (width + 1) >> 1;
 		cmdlen = 3 + height * step;
 		cmdfn = mb86290fb_imageblit16;
 		break;

 	default:
 		cfb_imageblit(info, image);
 		return;
 	}

 	cmd = kmalloc_array(cmdlen, 4, GFP_DMA);
 	if (!cmd)
 		return cfb_imageblit(info, image);
 	cmdfn(cmd, step, dx, dy, width, height, fgcolor, bgcolor, image, info);
 	mb862xxfb_write_fifo(cmdlen, cmd, info);
 	kfree(cmd);
 }

 static void mb86290fb_fillrect(struct fb_info *info,
 			       const struct fb_fillrect *rect)
 {

 	u32 x2, y2, vxres, vyres, height, width, fg;
 	u32 cmd[7];

 	vxres = info->var.xres_virtual;
 	vyres = info->var.yres_virtual;

 	if (!rect->width || !rect->height || rect->dx > vxres
 	    || rect->dy > vyres)
 		return;

 	/* We could use hardware clipping but on many cards you get around
 	 * hardware clipping by writing to framebuffer directly. */
 	x2 = rect->dx + rect->width;
 	y2 = rect->dy + rect->height;
 	x2 = min(x2, vxres);
 	y2 = min(y2, vyres);
 	width = x2 - rect->dx;
 	height = y2 - rect->dy;
 	if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
 	    info->fix.visual == FB_VISUAL_DIRECTCOLOR)
 		fg = ((u32 *) (info->pseudo_palette))[rect->color];
 	else
 		fg = rect->color;

 	switch (rect->rop) {

 	case ROP_XOR:
 		/* Set raster operation */
 		cmd[1] = (2 << 7) | (GDC_ROP_XOR << 9);
 		break;

 	case ROP_COPY:
 		/* Set raster operation */
 		cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9);
 		break;

 	}

 	cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP;
 	/* cmd[1] set earlier */
 	cmd[2] =
 	    (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16);
 	cmd[3] = fg;
 	cmd[4] = (GDC_TYPE_DRAWRECTP << 24) | (GDC_CMD_BLT_FILL << 16);
 	cmd[5] = (rect->dy << 16) | (rect->dx);
 	cmd[6] = (height << 16) | width;

 	mb862xxfb_write_fifo(7, cmd, info);
 }

 void mb862xxfb_init_accel(struct fb_info *info, struct fb_ops *fbops, int xres)
 {
 	struct mb862xxfb_par *par = info->par;

 	if (info->var.bits_per_pixel == 32) {
 		fbops->fb_fillrect = cfb_fillrect;
 		fbops->fb_copyarea = cfb_copyarea;
 		fbops->fb_imageblit = cfb_imageblit;
 	} else {
 		outreg(disp, GC_L0EM, 3);
 		fbops->fb_fillrect = mb86290fb_fillrect;
 		fbops->fb_copyarea = mb86290fb_copyarea;
 		fbops->fb_imageblit = mb86290fb_imageblit;
 	}
 	outreg(draw, GDC_REG_DRAW_BASE, 0);
 	outreg(draw, GDC_REG_MODE_MISC, 0x8000);
 	outreg(draw, GDC_REG_X_RESOLUTION, xres);

 	info->flags |=
 	    FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
 	    FBINFO_HWACCEL_IMAGEBLIT;
 	info->fix.accel = 0xff;	/*FIXME: add right define */
 }

 MODULE_LICENSE("GPL v2");
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* drivers/mb862xx/mb862xxfb_accel.c
	*
	* Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver acceleration support
	*
	* (C) 2007 Alexander Shishkin <virtuoso@slind.org>
	* (C) 2009 Valentin Sitdikov <v.sitdikov@gmail.com>
	* (C) 2009 Siemens AG
	*/
	#include <linux/fb.h>
	#include <linux/delay.h>
	#include <linux/init.h>
	#include <linux/interrupt.h>
	#include <linux/module.h>
	#include <linux/pci.h>
	#include <linux/slab.h>

	#include "mb862xxfb.h"
	#include "mb862xx_reg.h"
	#include "mb862xxfb_accel.h"

	static void mb862xxfb_write_fifo(u32 count, u32 data, struct fb_info info)
	{
	struct mb862xxfb_par *par = info->par;
	static u32 free;

	u32 total = 0;
	while (total < count) {
	if (free) {
	outreg(geo, GDC_GEO_REG_INPUT_FIFO, data[total]);
	total++;
	free--;
	} else {
	free = (u32) inreg(draw, GDC_REG_FIFO_COUNT);
	}
	}
	}

	static void mb86290fb_copyarea(struct fb_info *info,
	const struct fb_copyarea *area)
	{
	__u32 cmd[6];

	cmd[0] = (GDC_TYPE_SETREGISTER << 24) \| (1 << 16) \| GDC_REG_MODE_BITMAP;
	/* Set raster operation */
	cmd[1] = (2 << 7) \| (GDC_ROP_COPY << 9);
	cmd[2] = GDC_TYPE_BLTCOPYP << 24;

	if (area->sx >= area->dx && area->sy >= area->dy)
	cmd[2] \|= GDC_CMD_BLTCOPY_TOP_LEFT << 16;
	else if (area->sx >= area->dx && area->sy <= area->dy)
	cmd[2] \|= GDC_CMD_BLTCOPY_BOTTOM_LEFT << 16;
	else if (area->sx <= area->dx && area->sy >= area->dy)
	cmd[2] \|= GDC_CMD_BLTCOPY_TOP_RIGHT << 16;
	else
	cmd[2] \|= GDC_CMD_BLTCOPY_BOTTOM_RIGHT << 16;

	cmd[3] = (area->sy << 16) \| area->sx;
	cmd[4] = (area->dy << 16) \| area->dx;
	cmd[5] = (area->height << 16) \| area->width;
	mb862xxfb_write_fifo(6, cmd, info);
	}

	/*
	* Fill in the cmd array /GDC FIFO commands/ to draw a 1bit image.
	* Make sure cmd has enough room!
	*/
	static void mb86290fb_imageblit1(u32 *cmd, u16 step, u16 dx, u16 dy,
	u16 width, u16 height, u32 fgcolor,
	u32 bgcolor, const struct fb_image *image,
	struct fb_info *info)
	{
	int i;
	unsigned const char *line;
	u16 bytes;

	/* set colors and raster operation regs */
	cmd[0] = (GDC_TYPE_SETREGISTER << 24) \| (1 << 16) \| GDC_REG_MODE_BITMAP;
	/* Set raster operation */
	cmd[1] = (2 << 7) \| (GDC_ROP_COPY << 9);
	cmd[2] =
	(GDC_TYPE_SETCOLORREGISTER << 24) \| (GDC_CMD_BODY_FORE_COLOR << 16);
	cmd[3] = fgcolor;
	cmd[4] =
	(GDC_TYPE_SETCOLORREGISTER << 24) \| (GDC_CMD_BODY_BACK_COLOR << 16);
	cmd[5] = bgcolor;

	i = 0;
	line = image->data;
	bytes = (image->width + 7) >> 3;

	/* and the image */
	cmd[6] = (GDC_TYPE_DRAWBITMAPP << 24) \|
	(GDC_CMD_BITMAP << 16) \| (2 + (step * height));
	cmd[7] = (dy << 16) \| dx;
	cmd[8] = (height << 16) \| width;

	while (i < height) {
	memcpy(&cmd[9 + i * step], line, step << 2);
	#ifdef __LITTLE_ENDIAN
	{
	int k = 0;
	for (k = 0; k < step; k++)
	cmd[9 + i * step + k] =
	cpu_to_be32(cmd[9 + i * step + k]);
	}
	#endif
	line += bytes;
	i++;
	}
	}

	/*
	* Fill in the cmd array /GDC FIFO commands/ to draw a 8bit image.
	* Make sure cmd has enough room!
	*/
	static void mb86290fb_imageblit8(u32 *cmd, u16 step, u16 dx, u16 dy,
	u16 width, u16 height, u32 fgcolor,
	u32 bgcolor, const struct fb_image *image,
	struct fb_info *info)
	{
	int i, j;
	unsigned const char line, ptr;
	u16 bytes;

	cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) \|
	(GDC_CMD_BLT_DRAW << 16) \| (2 + (height * step));
	cmd[1] = (dy << 16) \| dx;
	cmd[2] = (height << 16) \| width;

	i = 0;
	line = image->data;
	bytes = image->width;

	while (i < height) {
	ptr = line;
	for (j = 0; j < step; j++) {
	cmd[3 + i * step + j] =
	(((u32 ) (info->pseudo_palette))[ptr]) & 0xffff;
	ptr++;
	cmd[3 + i * step + j] \|=
	((((u32 *) (info->
	pseudo_palette))[*ptr]) & 0xffff) << 16;
	ptr++;
	}

	line += bytes;
	i++;
	}
	}

	/*
	* Fill in the cmd array /GDC FIFO commands/ to draw a 16bit image.
	* Make sure cmd has enough room!
	*/
	static void mb86290fb_imageblit16(u32 *cmd, u16 step, u16 dx, u16 dy,
	u16 width, u16 height, u32 fgcolor,
	u32 bgcolor, const struct fb_image *image,
	struct fb_info *info)
	{
	int i;
	unsigned const char *line;
	u16 bytes;

	i = 0;
	line = image->data;
	bytes = image->width << 1;

	cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) \|
	(GDC_CMD_BLT_DRAW << 16) \| (2 + step * height);
	cmd[1] = (dy << 16) \| dx;
	cmd[2] = (height << 16) \| width;

	while (i < height) {
	memcpy(&cmd[3 + i * step], line, step);
	line += bytes;
	i++;
	}
	}

	static void mb86290fb_imageblit(struct fb_info *info,
	const struct fb_image *image)
	{
	u32 *cmd = NULL;
	void (cmdfn) (u32 , u16, u16, u16, u16, u16, u32, u32,
	const struct fb_image , struct fb_info ) = NULL;
	u32 cmdlen;
	u32 fgcolor = 0, bgcolor = 0;
	u16 step;

	u16 width = image->width, height = image->height;
	u16 dx = image->dx, dy = image->dy;
	int x2, y2, vxres, vyres;

	x2 = image->dx + image->width;
	y2 = image->dy + image->height;
	vxres = info->var.xres_virtual;
	vyres = info->var.yres_virtual;
	x2 = min(x2, vxres);
	y2 = min(y2, vyres);
	width = x2 - dx;
	height = y2 - dy;

	switch (image->depth) {
	case 1:
	step = (width + 31) >> 5;
	cmdlen = 9 + height * step;
	cmdfn = mb86290fb_imageblit1;
	if (info->fix.visual == FB_VISUAL_TRUECOLOR \|\|
	info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
	fgcolor =
	((u32 *) (info->pseudo_palette))[image->fg_color];
	bgcolor =
	((u32 *) (info->pseudo_palette))[image->bg_color];
	} else {
	fgcolor = image->fg_color;
	bgcolor = image->bg_color;
	}

	break;

	case 8:
	step = (width + 1) >> 1;
	cmdlen = 3 + height * step;
	cmdfn = mb86290fb_imageblit8;
	break;

	case 16:
	step = (width + 1) >> 1;
	cmdlen = 3 + height * step;
	cmdfn = mb86290fb_imageblit16;
	break;

	default:
	cfb_imageblit(info, image);
	return;
	}

	cmd = kmalloc_array(cmdlen, 4, GFP_DMA);
	if (!cmd)
	return cfb_imageblit(info, image);
	cmdfn(cmd, step, dx, dy, width, height, fgcolor, bgcolor, image, info);
	mb862xxfb_write_fifo(cmdlen, cmd, info);
	kfree(cmd);
	}

	static void mb86290fb_fillrect(struct fb_info *info,
	const struct fb_fillrect *rect)
	{

	u32 x2, y2, vxres, vyres, height, width, fg;
	u32 cmd[7];

	vxres = info->var.xres_virtual;
	vyres = info->var.yres_virtual;

	if (!rect->width \|\| !rect->height \|\| rect->dx > vxres
	\|\| rect->dy > vyres)
	return;

	/* We could use hardware clipping but on many cards you get around
	* hardware clipping by writing to framebuffer directly. */
	x2 = rect->dx + rect->width;
	y2 = rect->dy + rect->height;
	x2 = min(x2, vxres);
	y2 = min(y2, vyres);
	width = x2 - rect->dx;
	height = y2 - rect->dy;
	if (info->fix.visual == FB_VISUAL_TRUECOLOR \|\|
	info->fix.visual == FB_VISUAL_DIRECTCOLOR)
	fg = ((u32 *) (info->pseudo_palette))[rect->color];
	else
	fg = rect->color;

	switch (rect->rop) {

	case ROP_XOR:
	/* Set raster operation */
	cmd[1] = (2 << 7) \| (GDC_ROP_XOR << 9);
	break;

	case ROP_COPY:
	/* Set raster operation */
	cmd[1] = (2 << 7) \| (GDC_ROP_COPY << 9);
	break;

	}

	cmd[0] = (GDC_TYPE_SETREGISTER << 24) \| (1 << 16) \| GDC_REG_MODE_BITMAP;
	/* cmd[1] set earlier */
	cmd[2] =
	(GDC_TYPE_SETCOLORREGISTER << 24) \| (GDC_CMD_BODY_FORE_COLOR << 16);
	cmd[3] = fg;
	cmd[4] = (GDC_TYPE_DRAWRECTP << 24) \| (GDC_CMD_BLT_FILL << 16);
	cmd[5] = (rect->dy << 16) \| (rect->dx);
	cmd[6] = (height << 16) \| width;

	mb862xxfb_write_fifo(7, cmd, info);
	}

	void mb862xxfb_init_accel(struct fb_info info, struct fb_ops fbops, int xres)
	{
	struct mb862xxfb_par *par = info->par;

	if (info->var.bits_per_pixel == 32) {
	fbops->fb_fillrect = cfb_fillrect;
	fbops->fb_copyarea = cfb_copyarea;
	fbops->fb_imageblit = cfb_imageblit;
	} else {
	outreg(disp, GC_L0EM, 3);
	fbops->fb_fillrect = mb86290fb_fillrect;
	fbops->fb_copyarea = mb86290fb_copyarea;
	fbops->fb_imageblit = mb86290fb_imageblit;
	}
	outreg(draw, GDC_REG_DRAW_BASE, 0);
	outreg(draw, GDC_REG_MODE_MISC, 0x8000);
	outreg(draw, GDC_REG_X_RESOLUTION, xres);

	info->flags \|=
	FBINFO_HWACCEL_COPYAREA \| FBINFO_HWACCEL_FILLRECT \|
	FBINFO_HWACCEL_IMAGEBLIT;
	info->fix.accel = 0xff; /FIXME: add right define /
	}

	MODULE_LICENSE("GPL v2");