Commit 90b0f085 authored by Krzysztof Helt's avatar Krzysztof Helt Committed by Linus Torvalds

tdfxfb: hardware cursor

This patch adds hardware cursor support to the tdfxfb driver.
Signed-off-by: default avatarKrzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: default avatarAntonino Daplas <adaplas@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 4f05b53b
......@@ -67,7 +67,6 @@
#include <linux/init.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <linux/timer.h>
#include <linux/spinlock.h>
#include <video/tdfx.h>
......@@ -148,8 +147,9 @@ MODULE_DEVICE_TABLE(pci, tdfxfb_id_table);
/*
* Driver data
*/
static int nopan = 0;
static int nowrap = 1; // not implemented (yet)
static int nopan;
static int nowrap = 1; /* not implemented (yet) */
static int hwcursor = 1;
static char *mode_option __devinitdata = NULL;
/* -------------------------------------------------------------------------
......@@ -378,7 +378,7 @@ static void do_write_regs(struct fb_info *info, struct banshee_reg *reg)
tdfx_outl(par, VGAINIT0, reg->vgainit0);
tdfx_outl(par, DACMODE, reg->dacmode);
tdfx_outl(par, VIDDESKSTRIDE, reg->stride);
tdfx_outl(par, HWCURPATADDR, 0);
tdfx_outl(par, HWCURPATADDR, reg->curspataddr);
tdfx_outl(par, VIDSCREENSIZE, reg->screensize);
tdfx_outl(par, VIDDESKSTART, reg->startaddr);
......@@ -453,6 +453,7 @@ static int tdfxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
DPRINTK("xoffset not supported\n");
return -EINVAL;
}
var->yoffset = 0;
/* Banshee doesn't support interlace, but Voodoo4/5 and probably Voodoo3 do. */
/* no direct information about device id now? use max_pixclock for this... */
......@@ -663,6 +664,9 @@ static int tdfxfb_set_par(struct fb_info *info)
VGAINIT0_EXTSHIFTOUT;
reg.vgainit1 = tdfx_inl(par, VGAINIT1) & 0x1fffff;
if (hwcursor)
reg.curspataddr = info->fix.smem_len;
reg.cursloc = 0;
reg.cursc0 = 0;
......@@ -1012,11 +1016,25 @@ static void tdfxfb_imageblit(struct fb_info *info, const struct fb_image *image)
}
#endif /* CONFIG_FB_3DFX_ACCEL */
#ifdef TDFX_HARDWARE_CURSOR
static int tdfxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct tdfx_par *par = info->par;
unsigned long flags;
u32 vidcfg;
if (!hwcursor)
return -EINVAL; /* just to force soft_cursor() call */
/* Too large of a cursor or wrong bpp :-( */
if (cursor->image.width > 64 ||
cursor->image.height > 64 ||
cursor->image.depth > 1)
return -EINVAL;
vidcfg = tdfx_inl(par, VIDPROCCFG);
if (cursor->enable)
tdfx_outl(par, VIDPROCCFG, vidcfg | VIDCFG_HWCURSOR_ENABLE);
else
tdfx_outl(par, VIDPROCCFG, vidcfg & ~VIDCFG_HWCURSOR_ENABLE);
/*
* If the cursor is not be changed this means either we want the
......@@ -1026,69 +1044,34 @@ static int tdfxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
if (!cursor->set)
return 0;
/* Too large of a cursor :-( */
if (cursor->image.width > 64 || cursor->image.height > 64)
return -ENXIO;
/*
* If we are going to be changing things we should disable
* the cursor first
*/
if (info->cursor.enable) {
spin_lock_irqsave(&par->DAClock, flags);
info->cursor.enable = 0;
del_timer(&(par->hwcursor.timer));
tdfx_outl(par, VIDPROCCFG, par->hwcursor.disable);
spin_unlock_irqrestore(&par->DAClock, flags);
}
/* Disable the Cursor */
if ((cursor->set && FB_CUR_SETCUR) && !cursor->enable)
return 0;
/* fix cursor color - XFree86 forgets to restore it properly */
if (cursor->set && FB_CUR_SETCMAP) {
struct fb_cmap cmap = cursor->image.cmap;
if (cursor->set & FB_CUR_SETCMAP) {
struct fb_cmap cmap = info->cmap;
u32 bg_idx = cursor->image.bg_color;
u32 fg_idx = cursor->image.fg_color;
unsigned long bg_color, fg_color;
cmap.len = 2; /* Voodoo 3+ only support 2 color cursors */
fg_color = ((cmap.red[cmap.start] << 16) |
(cmap.green[cmap.start] << 8) |
(cmap.blue[cmap.start]));
bg_color = ((cmap.red[cmap.start + 1] << 16) |
(cmap.green[cmap.start + 1] << 8) |
(cmap.blue[cmap.start + 1]));
fb_copy_cmap(&cmap, &info->cursor.image.cmap);
spin_lock_irqsave(&par->DAClock, flags);
fg_color = (((u32)cmap.red[fg_idx] & 0xff00) << 8) |
(((u32)cmap.green[fg_idx] & 0xff00) << 0) |
(((u32)cmap.blue[fg_idx] & 0xff00) >> 8);
bg_color = (((u32)cmap.red[bg_idx] & 0xff00) << 8) |
(((u32)cmap.green[bg_idx] & 0xff00) << 0) |
(((u32)cmap.blue[bg_idx] & 0xff00) >> 8);
banshee_make_room(par, 2);
tdfx_outl(par, HWCURC0, bg_color);
tdfx_outl(par, HWCURC1, fg_color);
spin_unlock_irqrestore(&par->DAClock, flags);
}
if (cursor->set && FB_CUR_SETPOS) {
int x, y;
if (cursor->set & FB_CUR_SETPOS) {
int x = cursor->image.dx;
int y = cursor->image.dy - info->var.yoffset;
x = cursor->image.dx;
y = cursor->image.dy;
y -= info->var.yoffset;
info->cursor.image.dx = x;
info->cursor.image.dy = y;
x += 63;
y += 63;
spin_lock_irqsave(&par->DAClock, flags);
banshee_make_room(par, 1);
tdfx_outl(par, HWCURLOC, (y << 16) + x);
spin_unlock_irqrestore(&par->DAClock, flags);
}
/* Not supported so we fake it */
if (cursor->set && FB_CUR_SETHOT) {
info->cursor.hot.x = cursor->hot.x;
info->cursor.hot.y = cursor->hot.y;
}
if (cursor->set && FB_CUR_SETSHAPE) {
if (cursor->set & (FB_CUR_SETIMAGE | FB_CUR_SETSHAPE)) {
/*
* Voodoo 3 and above cards use 2 monochrome cursor patterns.
* The reason is so the card can fetch 8 words at a time
......@@ -1096,7 +1079,7 @@ static int tdfxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
* This reduces the number of times for access to draw the
* cursor for each screen refresh.
* Each pattern is a bitmap of 64 bit wide and 64 bit high
* (total of 8192 bits or 1024 Kbytes). The two patterns are
* (total of 8192 bits or 1024 bytes). The two patterns are
* stored in such a way that pattern 0 always resides in the
* lower half (least significant 64 bits) of a 128 bit word
* and pattern 1 the upper half. If you examine the data of
......@@ -1107,50 +1090,34 @@ static int tdfxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
* (128 bits) which is the maximum cursor width times two for
* the two monochrome patterns.
*/
u8 *cursorbase = (u8 *)info->cursor.image.data;
char *bitmap = (char *)cursor->image.data;
char *mask = (char *)cursor->mask;
int i, j, k, h = 0;
for (i = 0; i < 64; i++) {
if (i < cursor->image.height) {
j = (cursor->image.width + 7) >> 3;
k = 8 - j;
for (; j > 0; j--) {
/* Pattern 0. Copy the cursor bitmap to it */
fb_writeb(*bitmap, cursorbase + h);
bitmap++;
/* Pattern 1. Copy the cursor mask to it */
fb_writeb(*mask, cursorbase + h + 8);
mask++;
h++;
}
for (; k > 0; k--) {
fb_writeb(0, cursorbase + h);
fb_writeb(~0, cursorbase + h + 8);
h++;
}
} else {
fb_writel(0, cursorbase + h);
fb_writel(0, cursorbase + h + 4);
fb_writel(~0, cursorbase + h + 8);
fb_writel(~0, cursorbase + h + 12);
h += 16;
u8 __iomem *cursorbase = info->screen_base + info->fix.smem_len;
u8 *bitmap = (u8 *)cursor->image.data;
u8 *mask = (u8 *)cursor->mask;
int i;
fb_memset(cursorbase, 0, 1024);
for (i = 0; i < cursor->image.height; i++) {
int h = 0;
int j = (cursor->image.width + 7) >> 3;
for (; j > 0; j--) {
u8 data = *mask ^ *bitmap;
if (cursor->rop == ROP_COPY)
data = *mask & *bitmap;
/* Pattern 0. Copy the cursor mask to it */
fb_writeb(*mask, cursorbase + h);
mask++;
/* Pattern 1. Copy the cursor bitmap to it */
fb_writeb(data, cursorbase + h + 8);
bitmap++;
h++;
}
cursorbase += 16;
}
}
/* Turn the cursor on */
cursor->enable = 1;
info->cursor = *cursor;
mod_timer(&par->hwcursor.timer, jiffies + HZ / 2);
spin_lock_irqsave(&par->DAClock, flags);
banshee_make_room(par, 1);
tdfx_outl(par, VIDPROCCFG, par->hwcursor.enable);
spin_unlock_irqrestore(&par->DAClock, flags);
return 0;
}
#endif
static struct fb_ops tdfxfb_ops = {
.owner = THIS_MODULE,
......@@ -1160,6 +1127,7 @@ static struct fb_ops tdfxfb_ops = {
.fb_blank = tdfxfb_blank,
.fb_pan_display = tdfxfb_pan_display,
.fb_sync = banshee_wait_idle,
.fb_cursor = tdfxfb_cursor,
#ifdef CONFIG_FB_3DFX_ACCEL
.fb_fillrect = tdfxfb_fillrect,
.fb_copyarea = tdfxfb_copyarea,
......@@ -1272,6 +1240,11 @@ static int __devinit tdfxfb_probe(struct pci_dev *pdev,
FBINFO_HWACCEL_IMAGEBLIT |
FBINFO_READS_FAST;
#endif
/* reserve 8192 bits for cursor */
/* the 2.4 driver says PAGE_MASK boundary is not enough for Voodoo4 */
if (hwcursor)
info->fix.smem_len = (info->fix.smem_len - 1024) &
(PAGE_MASK << 1);
if (!mode_option)
mode_option = "640x480@60";
......@@ -1336,6 +1309,8 @@ static void tdfxfb_setup(char *options)
nopan = 1;
} else if (!strcmp(this_opt, "nowrap")) {
nowrap = 1;
} else if (!strcmp(this_opt, "hwcursor")) {
hwcursor = simple_strtoul(opt + 9, NULL, 0);
} else {
mode_option = this_opt;
}
......@@ -1394,5 +1369,9 @@ MODULE_AUTHOR("Hannu Mallat <hmallat@cc.hut.fi>");
MODULE_DESCRIPTION("3Dfx framebuffer device driver");
MODULE_LICENSE("GPL");
module_param(hwcursor, int, 0644);
MODULE_PARM_DESC(hwcursor, "Enable hardware cursor "
"(1=enable, 0=disable, default=1)");
module_init(tdfxfb_init);
module_exit(tdfxfb_exit);
......@@ -175,14 +175,6 @@ struct tdfx_par {
u32 palette[16];
void __iomem *regbase_virt;
unsigned long iobase;
struct {
int w, u, d;
unsigned long enable, disable;
struct timer_list timer;
} hwcursor;
spinlock_t DAClock;
};
#endif /* __KERNEL__ */
......
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