cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

savagefb_accel.c (3244B)

      1/*-*- linux-c -*-
      2 *  linux/drivers/video/savage/savage_accel.c -- Hardware Acceleration
      3 *
      4 *      Copyright (C) 2004 Antonino Daplas<adaplas@pol.net>
      5 *      All Rights Reserved
      6 *
      7 *  This file is subject to the terms and conditions of the GNU General Public
      8 *  License. See the file COPYING in the main directory of this archive for
      9 *  more details.
     10 */
     11#include <linux/kernel.h>
     12#include <linux/string.h>
     13#include <linux/fb.h>
     14#include <linux/module.h>
     15
     16#include "savagefb.h"
     17
     18static u32 savagefb_rop[] = {
     19	0xCC, /* ROP_COPY */
     20	0x5A  /* ROP_XOR  */
     21};
     22
     23int savagefb_sync(struct fb_info *info)
     24{
     25	struct savagefb_par *par = info->par;
     26
     27	par->SavageWaitIdle(par);
     28	return 0;
     29}
     30
     31void savagefb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
     32{
     33	struct savagefb_par *par = info->par;
     34	int sx = region->sx, dx = region->dx;
     35	int sy = region->sy, dy = region->dy;
     36	int cmd;
     37
     38	if (!region->width || !region->height)
     39		return;
     40	par->bci_ptr = 0;
     41	cmd = BCI_CMD_RECT | BCI_CMD_DEST_GBD | BCI_CMD_SRC_GBD;
     42	BCI_CMD_SET_ROP(cmd, savagefb_rop[0]);
     43
     44	if (dx <= sx) {
     45		cmd |= BCI_CMD_RECT_XP;
     46	} else {
     47		sx += region->width - 1;
     48		dx += region->width - 1;
     49	}
     50
     51	if (dy <= sy) {
     52		cmd |= BCI_CMD_RECT_YP;
     53	} else {
     54		sy += region->height - 1;
     55		dy += region->height - 1;
     56	}
     57
     58	par->SavageWaitFifo(par,4);
     59	BCI_SEND(cmd);
     60	BCI_SEND(BCI_X_Y(sx, sy));
     61	BCI_SEND(BCI_X_Y(dx, dy));
     62	BCI_SEND(BCI_W_H(region->width, region->height));
     63}
     64
     65void savagefb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
     66{
     67	struct savagefb_par *par = info->par;
     68	int cmd, color;
     69
     70	if (!rect->width || !rect->height)
     71		return;
     72
     73	if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR)
     74		color = rect->color;
     75	else
     76		color = ((u32 *)info->pseudo_palette)[rect->color];
     77
     78	cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
     79	      BCI_CMD_DEST_GBD | BCI_CMD_SRC_SOLID |
     80	      BCI_CMD_SEND_COLOR;
     81
     82	par->bci_ptr = 0;
     83	BCI_CMD_SET_ROP(cmd, savagefb_rop[rect->rop]);
     84
     85	par->SavageWaitFifo(par,4);
     86	BCI_SEND(cmd);
     87	BCI_SEND(color);
     88	BCI_SEND( BCI_X_Y(rect->dx, rect->dy) );
     89	BCI_SEND( BCI_W_H(rect->width, rect->height) );
     90}
     91
     92void savagefb_imageblit(struct fb_info *info, const struct fb_image *image)
     93{
     94	struct savagefb_par *par = info->par;
     95	int fg, bg, size, i, width;
     96	int cmd;
     97	u32 *src = (u32 *) image->data;
     98
     99	if (!image->width || !image->height)
    100		return;
    101
    102	if (image->depth != 1) {
    103		cfb_imageblit(info, image);
    104		return;
    105	}
    106
    107	if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
    108		fg = image->fg_color;
    109		bg = image->bg_color;
    110	} else {
    111		fg = ((u32 *)info->pseudo_palette)[image->fg_color];
    112		bg = ((u32 *)info->pseudo_palette)[image->bg_color];
    113	}
    114
    115	cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
    116	      BCI_CMD_CLIP_LR | BCI_CMD_DEST_GBD | BCI_CMD_SRC_MONO |
    117	      BCI_CMD_SEND_COLOR;
    118
    119	par->bci_ptr = 0;
    120	BCI_CMD_SET_ROP(cmd, savagefb_rop[0]);
    121
    122	width = (image->width + 31) & ~31;
    123	size = (width * image->height)/8;
    124	size >>= 2;
    125
    126	par->SavageWaitFifo(par, size + 5);
    127	BCI_SEND(cmd);
    128	BCI_SEND(BCI_CLIP_LR(image->dx, image->dx + image->width - 1));
    129	BCI_SEND(fg);
    130	BCI_SEND(bg);
    131	BCI_SEND(BCI_X_Y(image->dx, image->dy));
    132	BCI_SEND(BCI_W_H(width, image->height));
    133	for (i = 0; i < size; i++)
    134		BCI_SEND(src[i]);
    135}
    136
    137MODULE_LICENSE("GPL");