-
/*
* ATI Mach64 CT/VT/GT/LT Cursor Support
*/
#include <linux/slab.h>
-#include <linux/console.h>
#include <linux/fb.h>
#include <linux/init.h>
+#include <linux/string.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <video/mach64.h>
#include "atyfb.h"
+/*
+ * The hardware cursor definition requires 2 bits per pixel. The
+ * Cursor size reguardless of the visible cursor size is 64 pixels
+ * by 64 lines. The total memory required to define the cursor is
+ * 16 bytes / line for 64 lines or 1024 bytes of data. The data
+ * must be in a contigiuos format. The 2 bit cursor code values are
+ * as follows:
+ *
+ * 00 - pixel colour = CURSOR_CLR_0
+ * 01 - pixel colour = CURSOR_CLR_1
+ * 10 - pixel colour = transparent (current display pixel)
+ * 11 - pixel colour = 1's complement of current display pixel
+ *
+ * Cursor Offset 64 pixels Actual Displayed Area
+ * \_________________________/
+ * | | | |
+ * |<--------------->| | |
+ * | CURS_HORZ_OFFSET| | |
+ * | |_______| | 64 Lines
+ * | ^ | |
+ * | | | |
+ * | CURS_VERT_OFFSET| |
+ * | | | |
+ * |____________________|____| |
+ *
+ *
+ * The Screen position of the top left corner of the displayed
+ * cursor is specificed by CURS_HORZ_VERT_POSN. Care must be taken
+ * when the cursor hot spot is not the top left corner and the
+ * physical cursor position becomes negative. It will be be displayed
+ * if either the horizontal or vertical cursor position is negative
+ *
+ * If x becomes negative the cursor manager must adjust the CURS_HORZ_OFFSET
+ * to a larger number and saturate CUR_HORZ_POSN to zero.
+ *
+ * if Y becomes negative, CUR_VERT_OFFSET must be adjusted to a larger number,
+ * CUR_OFFSET must be adjusted to a point to the appropraite line in the cursor
+ * definitation and CUR_VERT_POSN must be saturated to zero.
+ */
+
/*
* Hardware Cursor support.
*/
-
-static const u8 cursor_pixel_map[2] = { 0, 15 };
-static const u8 cursor_color_map[2] = { 0, 0xff };
-
static const u8 cursor_bits_lookup[16] = {
0x00, 0x40, 0x10, 0x50, 0x04, 0x44, 0x14, 0x54,
0x01, 0x41, 0x11, 0x51, 0x05, 0x45, 0x15, 0x55
0xa8, 0x28, 0x88, 0x08, 0xa0, 0x20, 0x80, 0x00
};
-void aty_set_cursor_color(struct fb_info *info)
-{
- struct atyfb_par *par = (struct atyfb_par *) info->par;
- struct aty_cursor *c = par->cursor;
- const u8 *pixel = cursor_pixel_map; /* ++Geert: Why?? */
- const u8 *red = cursor_color_map;
- const u8 *green = cursor_color_map;
- const u8 *blue = cursor_color_map;
- u32 fg_color, bg_color;
-
- if (!c)
- return;
-
-#ifdef __sparc__
- if (par->mmaped)
- return;
-#endif
- fg_color = (u32) red[0] << 24;
- fg_color |= (u32) green[0] << 16;
- fg_color |= (u32) blue[0] << 8;
- fg_color |= (u32) pixel[0];
-
- bg_color = (u32) red[1] << 24;
- bg_color |= (u32) green[1] << 16;
- bg_color |= (u32) blue[1] << 8;
- bg_color |= (u32) pixel[1];
-
- wait_for_fifo(2, par);
- aty_st_le32(CUR_CLR0, fg_color, par);
- aty_st_le32(CUR_CLR1, bg_color, par);
-}
-
-void aty_set_cursor_shape(struct fb_info *info)
-{
- struct atyfb_par *par = (struct atyfb_par *) info->par;
- struct fb_cursor *cursor = &info->cursor;
- struct aty_cursor *c = par->cursor;
- u8 *ram, m, b;
- int x, y;
-
- if (!c)
- return;
-#ifdef __sparc__
- if (par->mmaped)
- return;
-#endif
-
- ram = c->ram;
- for (y = 0; y < cursor->image.height; y++) {
- for (x = 0; x < cursor->image.width >> 2; x++) {
- m = c->mask[x][y];
- b = c->bits[x][y];
- fb_writeb(cursor_mask_lookup[m >> 4] |
- cursor_bits_lookup[(b & m) >> 4], ram++);
- fb_writeb(cursor_mask_lookup[m & 0x0f] |
- cursor_bits_lookup[(b & m) & 0x0f],
- ram++);
- }
- for (; x < 8; x++) {
- fb_writeb(0xaa, ram++);
- fb_writeb(0xaa, ram++);
- }
- }
- fb_memset(ram, 0xaa, (64 - cursor->image.height) * 16);
-}
-
-static void aty_set_cursor(struct fb_info *info)
+int atyfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct atyfb_par *par = (struct atyfb_par *) info->par;
- struct fb_cursor *cursor = &info->cursor;
- struct aty_cursor *c = par->cursor;
u16 xoff, yoff;
- int x, y;
-
- if (!c)
- return;
+ int x, y, h;
#ifdef __sparc__
if (par->mmaped)
- return;
+ return -EPERM;
#endif
+ if (par->asleep)
+ return -EPERM;
- if (cursor->enable) {
+ /* Hide cursor */
+ wait_for_fifo(1, par);
+ aty_st_le32(GEN_TEST_CNTL, aty_ld_le32(GEN_TEST_CNTL, par) & ~HWCURSOR_ENABLE, par);
+
+ /* set position */
+ if (cursor->set & FB_CUR_SETPOS) {
x = cursor->image.dx - cursor->hot.x - info->var.xoffset;
if (x < 0) {
xoff = -x;
yoff = 0;
}
+ h = cursor->image.height;
+
+ /*
+ * In doublescan mode, the cursor location
+ * and heigh also needs to be doubled.
+ */
+ if (par->crtc.gen_cntl & CRTC_DBL_SCAN_EN) {
+ y<<=1;
+ h<<=1;
+ }
wait_for_fifo(4, par);
- aty_st_le32(CUR_OFFSET, (info->fix.smem_len >> 3) + (yoff << 1),
- par);
+ aty_st_le32(CUR_OFFSET, (info->fix.smem_len >> 3) + (yoff << 1), par);
aty_st_le32(CUR_HORZ_VERT_OFF,
- ((u32) (64 - cursor->image.height + yoff) << 16) | xoff,
- par);
+ ((u32) (64 - h + yoff) << 16) | xoff, par);
aty_st_le32(CUR_HORZ_VERT_POSN, ((u32) y << 16) | x, par);
- aty_st_le32(GEN_TEST_CNTL, aty_ld_le32(GEN_TEST_CNTL, par)
- | HWCURSOR_ENABLE, par);
- } else {
- wait_for_fifo(1, par);
- aty_st_le32(GEN_TEST_CNTL,
- aty_ld_le32(GEN_TEST_CNTL,
- par) & ~HWCURSOR_ENABLE, par);
}
- if (par->blitter_may_be_busy)
- wait_for_idle(par);
-}
-int atyfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
-{
- struct atyfb_par *par = (struct atyfb_par *) info->par;
- struct aty_cursor *c = par->cursor;
+ /* Set color map */
+ if (cursor->set & FB_CUR_SETCMAP) {
+ u32 fg_idx, bg_idx, fg, bg;
- if (!c)
- return -1;
+ fg_idx = cursor->image.fg_color;
+ bg_idx = cursor->image.bg_color;
-#ifdef __sparc__
- if (par->mmaped)
- return 0;
-#endif
+ fg = (info->cmap.red[fg_idx] << 24) |
+ (info->cmap.green[fg_idx] << 16) |
+ (info->cmap.blue[fg_idx] << 8) | 15;
+
+ bg = (info->cmap.red[bg_idx] << 24) |
+ (info->cmap.green[bg_idx] << 16) |
+ (info->cmap.blue[bg_idx] << 8);
+
+ wait_for_fifo(2, par);
+ aty_st_le32(CUR_CLR0, bg, par);
+ aty_st_le32(CUR_CLR1, fg, par);
+ }
- aty_set_cursor(info);
- cursor->image.dx = info->cursor.image.dx;
- cursor->image.dy = info->cursor.image.dy;
+ if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
+ u8 *src = (u8 *)cursor->image.data;
+ u8 *msk = (u8 *)cursor->mask;
+ u8 __iomem *dst = (u8 __iomem *)info->sprite.addr;
+ unsigned int width = (cursor->image.width + 7) >> 3;
+ unsigned int height = cursor->image.height;
+ unsigned int align = info->sprite.scan_align;
+
+ unsigned int i, j, offset;
+ u8 m, b;
+
+ // Clear cursor image with 1010101010...
+ fb_memset(dst, 0xaa, 1024);
+
+ offset = align - width*2;
+
+ for (i = 0; i < height; i++) {
+ for (j = 0; j < width; j++) {
+ b = *src++;
+ m = *msk++;
+ switch (cursor->rop) {
+ case ROP_XOR:
+ // Upper 4 bits of mask data
+ fb_writeb(cursor_mask_lookup[m >> 4 ] |
+ cursor_bits_lookup[(b ^ m) >> 4], dst++);
+ // Lower 4 bits of mask
+ fb_writeb(cursor_mask_lookup[m & 0x0f ] |
+ cursor_bits_lookup[(b ^ m) & 0x0f], dst++);
+ break;
+ case ROP_COPY:
+ // Upper 4 bits of mask data
+ fb_writeb(cursor_mask_lookup[m >> 4 ] |
+ cursor_bits_lookup[(b & m) >> 4], dst++);
+ // Lower 4 bits of mask
+ fb_writeb(cursor_mask_lookup[m & 0x0f ] |
+ cursor_bits_lookup[(b & m) & 0x0f], dst++);
+ break;
+ }
+ }
+ dst += offset;
+ }
+ }
- aty_set_cursor(info);
+ if (cursor->enable) {
+ wait_for_fifo(1, par);
+ aty_st_le32(GEN_TEST_CNTL, aty_ld_le32(GEN_TEST_CNTL, par)
+ | HWCURSOR_ENABLE, par);
+ }
return 0;
}
-struct aty_cursor *__init aty_init_cursor(struct fb_info *info)
+int __init aty_init_cursor(struct fb_info *info)
{
- struct aty_cursor *cursor;
unsigned long addr;
- cursor = kmalloc(sizeof(struct aty_cursor), GFP_ATOMIC);
- if (!cursor)
- return NULL;
- memset(cursor, 0, sizeof(*cursor));
-
info->fix.smem_len -= PAGE_SIZE;
#ifdef __sparc__
addr = (unsigned long) info->screen_base - 0x800000 + info->fix.smem_len;
- cursor->ram = (u8 *) addr;
+ info->sprite.addr = (u8 *) addr;
#else
#ifdef __BIG_ENDIAN
addr = info->fix.smem_start - 0x800000 + info->fix.smem_len;
- cursor->ram = (u8 *) ioremap(addr, 1024);
+ info->sprite.addr = (u8 *) ioremap(addr, 1024);
#else
addr = (unsigned long) info->screen_base + info->fix.smem_len;
- cursor->ram = (u8 *) addr;
+ info->sprite.addr = (u8 *) addr;
#endif
#endif
- if (!cursor->ram) {
- kfree(cursor);
- return NULL;
- }
- return cursor;
-}
-
-int atyfb_set_font(struct fb_info *info, int width, int height)
-{
- struct atyfb_par *par = (struct atyfb_par *) info->par;
- struct fb_cursor *cursor = &info->cursor;
- struct aty_cursor *c = par->cursor;
- int i, j;
-
- if (c) {
- if (!width || !height) {
- width = 8;
- height = 16;
- }
-
- cursor->hot.x = 0;
- cursor->hot.y = 0;
- cursor->image.width = width;
- cursor->image.height = height;
-
- memset(c->bits, 0xff, sizeof(c->bits));
- memset(c->mask, 0, sizeof(c->mask));
+ if (!info->sprite.addr)
+ return -ENXIO;
+ info->sprite.size = PAGE_SIZE;
+ info->sprite.scan_align = 16; /* Scratch pad 64 bytes wide */
+ info->sprite.buf_align = 16; /* and 64 lines tall. */
+ info->sprite.flags = FB_PIXMAP_IO;
- for (i = 0, j = width; j >= 0; j -= 8, i++) {
- c->mask[i][height - 2] =
- (j >= 8) ? 0xff : (0xff << (8 - j));
- c->mask[i][height - 1] =
- (j >= 8) ? 0xff : (0xff << (8 - j));
- }
+ info->fbops->fb_cursor = atyfb_cursor;
- aty_set_cursor_color(info);
- aty_set_cursor_shape(info);
- }
- return 1;
+ return 0;
}
+
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