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[src/trunk]: src/sys/dev/sbus - use hardware to draw bitmap fonts
details: https://anonhg.NetBSD.org/src/rev/6c165b3fe8a9
branches: trunk
changeset: 825740:6c165b3fe8a9
user: macallan <macallan%NetBSD.org@localhost>
date: Sat Jul 29 03:29:49 2017 +0000
description:
- use hardware to draw bitmap fonts
- while there enable font loading etc.
diffstat:
sys/dev/sbus/mgx.c | 106 +++++++++++++++++++++++++++++++++++++++++++++----
sys/dev/sbus/mgxreg.h | 4 +-
2 files changed, 99 insertions(+), 11 deletions(-)
diffs (247 lines):
diff -r bf75da319eba -r 6c165b3fe8a9 sys/dev/sbus/mgx.c
--- a/sys/dev/sbus/mgx.c Sat Jul 29 03:05:51 2017 +0000
+++ b/sys/dev/sbus/mgx.c Sat Jul 29 03:29:49 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: mgx.c,v 1.9 2016/05/07 15:32:08 macallan Exp $ */
+/* $NetBSD: mgx.c,v 1.10 2017/07/29 03:29:49 macallan Exp $ */
/*-
* Copyright (c) 2014 Michael Lorenz
@@ -29,7 +29,7 @@
/* a console driver for the SSB 4096V-MGX graphics card */
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: mgx.c,v 1.9 2016/05/07 15:32:08 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: mgx.c,v 1.10 2017/07/29 03:29:49 macallan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -39,6 +39,7 @@
#include <sys/conf.h>
#include <sys/kmem.h>
#include <sys/kauth.h>
+#include <sys/atomic.h>
#include <sys/bus.h>
#include <machine/autoconf.h>
@@ -85,7 +86,7 @@
u_char sc_cmap_blue[256];
int sc_cursor_x, sc_cursor_y;
int sc_hotspot_x, sc_hotspot_y;
- int sc_video;
+ int sc_video, sc_buf;
void (*sc_putchar)(void *, int, int, u_int, long);
struct vcons_screen sc_console_screen;
struct wsscreen_descr sc_defaultscreen_descr;
@@ -114,7 +115,8 @@
static void mgx_bitblt(void *, int, int, int, int, int, int, int);
static void mgx_rectfill(void *, int, int, int, int, long);
-static void mgx_putchar(void *, int, int, u_int, long);
+static void mgx_putchar_aa(void *, int, int, u_int, long);
+static void mgx_putchar_mono(void *, int, int, u_int, long);
static void mgx_cursor(void *, int, int, int);
static void mgx_copycols(void *, int, int, int, int);
static void mgx_erasecols(void *, int, int, int, long);
@@ -295,7 +297,8 @@
0, 0,
NULL,
8, 16,
- WSSCREEN_WSCOLORS | WSSCREEN_HILIT,
+ WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE |
+ WSSCREEN_RESIZE,
NULL
};
@@ -315,6 +318,8 @@
vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, &mgx_accessops);
sc->vd.init_screen = mgx_init_screen;
+ sc->vd.show_screen_cookie = &sc->sc_gc;
+ sc->vd.show_screen_cb = glyphcache_adapt;
vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, &defattr);
sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
@@ -331,6 +336,10 @@
sc->sc_gc.gc_blitcookie = sc;
sc->sc_gc.gc_rop = ROP_SRC;
+ /*
+ * leave some room between visible screen and glyph cache for upload
+ * buffers used by putchar_mono()
+ */
glyphcache_init(&sc->sc_gc,
sc->sc_height + 5,
(0x400000 / sc->sc_stride) - sc->sc_height - 5,
@@ -535,6 +544,7 @@
if (mgx_wait_fifo(sc, FIFO_AT24) == 0)
return;
+ sc->sc_buf = 0;
/* read name from sequencer */
for (i = 0; i < 8; i++) {
mgx_write_vga(sc, SEQ_INDEX, i + 0x11);
@@ -597,9 +607,12 @@
default:
return; /* not supported */
}
+ mgx_wait_fifo(sc, 4);
mgx_write_1(sc, ATR_CLIP_CONTROL, 0);
mgx_write_1(sc, ATR_BYTEMASK, 0xff);
mgx_write_1(sc, ATR_PIXEL, reg);
+ mgx_write_4(sc, ATR_OFFSET, 0);
+ mgx_wait_fifo(sc, 4);
mgx_write_vga(sc, CRTC_INDEX, 0x13);
mgx_write_vga(sc, CRTC_DATA, stride & 0xff);
mgx_write_vga(sc, CRTC_INDEX, 0x1c);
@@ -609,6 +622,7 @@
if (depth != MGX_DEPTH)
mgx_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height, 0);
+ mgx_wait_fifo(sc, 4);
/* initialize hardware cursor stuff */
mgx_write_2(sc, ATR_CURSOR_ADDRESS, (sc->sc_fbsize - 1024) >> 10);
mgx_write_1(sc, ATR_CURSOR_ENABLE, 0);
@@ -685,7 +699,7 @@
}
static void
-mgx_putchar(void *cookie, int row, int col, u_int c, long attr)
+mgx_putchar_aa(void *cookie, int row, int col, u_int c, long attr)
{
struct rasops_info *ri = cookie;
struct wsdisplay_font *font = PICK_FONT(ri, c);
@@ -709,6 +723,7 @@
mgx_rectfill(sc, x, y + he - 2, wi, 1, fg);
return;
}
+
rv = glyphcache_try(&sc->sc_gc, c, x, y, attr);
if (rv != GC_OK) {
volatile uint32_t junk;
@@ -730,6 +745,74 @@
}
static void
+mgx_putchar_mono(void *cookie, int row, int col, u_int c, long attr)
+{
+ struct rasops_info *ri = cookie;
+ struct wsdisplay_font *font = PICK_FONT(ri, c);
+ struct vcons_screen *scr = ri->ri_hw;
+ struct mgx_softc *sc = scr->scr_cookie;
+ void *s, *d;
+ uint32_t fg, bg, scratch = (sc->sc_stride * sc->sc_height + 31) & ~31;
+ int x, y, wi, he;
+
+ wi = font->fontwidth;
+ he = font->fontheight;
+
+ bg = (attr >> 16) & 0xf;
+ fg = (attr >> 24) & 0xf;
+
+ x = ri->ri_xorigin + col * wi;
+ y = ri->ri_yorigin + row * he;
+
+ if (c == 0x20) {
+ mgx_rectfill(sc, x, y, wi, he, bg);
+ if (attr & 1)
+ mgx_rectfill(sc, x, y + he - 2, wi, 1, fg);
+ return;
+ }
+
+ /*
+ * do hardware colour expansion
+ * there has to be an upload port somewhere, sinde there are host blit
+ * commands, but it's not used or mentioned in the xf86-video-apm driver
+ * so for now we use the vram-to-vram blits to draw characters.
+ * Use rotating buffers since commands can be queued and just because
+ * the blitter can accept another command that does not mean that the
+ * previous command(s) have finished, so make sure we don't touch the
+ * buffers used for the last few operations
+ * Align everything to 64bit, one for memcpy and also for the chip -
+ * I'm not sure what the exact alignment requirements are but mono
+ * bitmaps need at least 16bit.
+ */
+ sc->sc_buf = (sc->sc_buf + 1) & 3; /* rotate through 4 buffers */
+ scratch += sc->sc_buf * ((ri->ri_fontscale + 31) & ~31);
+ s = WSFONT_GLYPH(c, font);
+ d = (uint8_t *)sc->sc_fbaddr + scratch;
+ memcpy(d, s, ri->ri_fontscale);
+ /*
+ * try to make sure the glyph made it into vram before kicking the
+ * blitter
+ */
+ membar_sync();
+ volatile uint32_t junk = *(volatile uint32_t *)sc->sc_fbaddr;
+ __USE(junk);
+ mgx_wait_fifo(sc, 3);
+ mgx_write_4(sc, ATR_FG, ri->ri_devcmap[fg]);
+ mgx_write_4(sc, ATR_BG, ri->ri_devcmap[bg]);
+ mgx_write_1(sc, ATR_ROP, ROP_SRC);
+ mgx_wait_fifo(sc, 5);
+ mgx_write_4(sc, ATR_DEC, sc->sc_dec | (DEC_COMMAND_BLT << DEC_COMMAND_SHIFT) |
+ (DEC_START_DIMX << DEC_START_SHIFT) |
+ DEC_SRC_LINEAR | DEC_SRC_CONTIGUOUS | DEC_MONOCHROME);
+ mgx_write_4(sc, ATR_SRC_XY, ((scratch & 0xfff000) << 4) | (scratch & 0xfff));
+ mgx_write_4(sc, ATR_DST_XY, (y << 16) | x);
+ mgx_write_4(sc, ATR_WH, (he << 16) | wi);
+
+ if (attr & 1)
+ mgx_rectfill(sc, x, y + he - 2, wi, 1, fg);
+}
+
+static void
mgx_cursor(void *cookie, int on, int row, int col)
{
struct rasops_info *ri = cookie;
@@ -848,6 +931,7 @@
#ifdef MGX_NOACCEL
scr->scr_flags |= VCONS_DONT_READ;
#endif
+ scr->scr_flags |= VCONS_LOADFONT;
ri->ri_rnum = 8;
ri->ri_rpos = 0;
@@ -859,9 +943,8 @@
ri->ri_bits = sc->sc_fbaddr;
rasops_init(ri, 0, 0);
- sc->sc_putchar = ri->ri_ops.putchar;
- ri->ri_caps = WSSCREEN_REVERSE | WSSCREEN_WSCOLORS;
+ ri->ri_caps = WSSCREEN_REVERSE | WSSCREEN_WSCOLORS | WSSCREEN_UNDERLINE;
rasops_reconfig(ri, ri->ri_height / ri->ri_font->fontheight,
ri->ri_width / ri->ri_font->fontwidth);
@@ -872,7 +955,12 @@
if (0)
#endif
{
- ri->ri_ops.putchar = mgx_putchar;
+ if (FONT_IS_ALPHA(ri->ri_font)) {
+ sc->sc_putchar = ri->ri_ops.putchar;
+ ri->ri_ops.putchar = mgx_putchar_aa;
+ } else {
+ ri->ri_ops.putchar = mgx_putchar_mono;
+ }
ri->ri_ops.cursor = mgx_cursor;
ri->ri_ops.copyrows = mgx_copyrows;
ri->ri_ops.eraserows = mgx_eraserows;
diff -r bf75da319eba -r 6c165b3fe8a9 sys/dev/sbus/mgxreg.h
--- a/sys/dev/sbus/mgxreg.h Sat Jul 29 03:05:51 2017 +0000
+++ b/sys/dev/sbus/mgxreg.h Sat Jul 29 03:29:49 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: mgxreg.h,v 1.4 2016/02/11 20:53:06 macallan Exp $ */
+/* $NetBSD: mgxreg.h,v 1.5 2017/07/29 03:29:49 macallan Exp $ */
/* register definitions based on OpenBSD's atxxreg.h: */
@@ -72,7 +72,7 @@
#define ATR_PATTERN2 0x004c
#define ATR_SRC_X 0x0050
#define ATR_SRC_Y 0x0052
-#define ATR_SRC_XY 0x0050
+#define ATR_SRC_XY 0x0050 /* pointer in vram if DEC_SRC_LINEAR */
#define ATR_DST_X 0x0054
#define ATR_DST_Y 0x0056
#define ATR_DST_XY 0x0054
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