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[src/trunk]: src/sys/dev/sbus - store bitmap fonts in vram
details: https://anonhg.NetBSD.org/src/rev/5328ef4ef2d2
branches: trunk
changeset: 825894:5328ef4ef2d2
user: macallan <macallan%NetBSD.org@localhost>
date: Fri Aug 04 23:54:46 2017 +0000
description:
- store bitmap fonts in vram
- don't try to force buffer flushes
- avoid 64bit writes to vram
-> no more corruption of font bitmaps
diffstat:
sys/dev/sbus/mgx.c | 133 +++++++++++++++++++++++++---------------------------
1 files changed, 65 insertions(+), 68 deletions(-)
diffs (264 lines):
diff -r edbf5f23d252 -r 5328ef4ef2d2 sys/dev/sbus/mgx.c
--- a/sys/dev/sbus/mgx.c Fri Aug 04 22:27:37 2017 +0000
+++ b/sys/dev/sbus/mgx.c Fri Aug 04 23:54:46 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: mgx.c,v 1.11 2017/07/29 03:32:00 macallan Exp $ */
+/* $NetBSD: mgx.c,v 1.12 2017/08/04 23:54:46 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 1.11 2017/07/29 03:32:00 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: mgx.c,v 1.12 2017/08/04 23:54:46 macallan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -94,6 +94,7 @@
struct wsscreen_list sc_screenlist;
struct vcons_data vd;
glyphcache sc_gc;
+ uint8_t sc_in[256];
};
static int mgx_match(device_t, cfdata_t, void *);
@@ -110,7 +111,7 @@
static int mgx_getcmap(struct mgx_softc *, struct wsdisplay_cmap *);
static int mgx_wait_engine(struct mgx_softc *);
__unused static int mgx_wait_host(struct mgx_softc *);
-static int mgx_wait_fifo(struct mgx_softc *, unsigned int);
+/*static*/ int mgx_wait_fifo(struct mgx_softc *, unsigned int);
static void mgx_bitblt(void *, int, int, int, int, int, int, int);
static void mgx_rectfill(void *, int, int, int, int, long);
@@ -122,6 +123,7 @@
static void mgx_erasecols(void *, int, int, int, long);
static void mgx_copyrows(void *, int, int, int);
static void mgx_eraserows(void *, int, int, long);
+static void mgx_adapt(struct vcons_screen *, void *);
static int mgx_do_cursor(struct mgx_softc *, struct wsdisplay_cursor *);
static void mgx_set_cursor(struct mgx_softc *);
@@ -237,7 +239,7 @@
struct rasops_info *ri;
unsigned long defattr;
bus_space_handle_t bh;
- int node = sa->sa_node;
+ int node = sa->sa_node, bsize;
int isconsole;
aprint_normal("\n");
@@ -267,7 +269,7 @@
}
sc->sc_fbaddr = bus_space_vaddr(sa->sa_bustag, bh);
}
-
+
if (sbus_bus_map(sa->sa_bustag,
sa->sa_slot,
sa->sa_reg[4].oa_base, 0x1000, 0,
@@ -318,8 +320,8 @@
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;
+ sc->vd.show_screen_cookie = sc;
+ sc->vd.show_screen_cb = mgx_adapt;
vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, &defattr);
sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
@@ -340,9 +342,10 @@
* leave some room between visible screen and glyph cache for upload
* buffers used by putchar_mono()
*/
+ bsize = (32 * 1024 * sc->sc_stride - 1) / sc->sc_stride;
glyphcache_init(&sc->sc_gc,
- sc->sc_height + 5,
- (0x400000 / sc->sc_stride) - sc->sc_height - 5,
+ sc->sc_height + bsize,
+ (0x400000 / sc->sc_stride) - (sc->sc_height + bsize),
sc->sc_width,
ri->ri_font->fontwidth,
ri->ri_font->fontheight,
@@ -378,16 +381,6 @@
fb->fb_type.fb_cmsize = 256;
fb->fb_type.fb_size = sc->sc_fbsize;
fb_attach(&sc->sc_fb, isconsole);
-
-#if 0
- {
- uint32_t ap;
- /* reads 0xfd210000 */
- mgx_write_4(sc, ATR_APERTURE, 0x00000000);
- ap = mgx_read_4(sc, ATR_APERTURE);
- printf("aperture: %08x\n", ap);
- }
-#endif
}
static void
@@ -514,7 +507,7 @@
return i;
}
-static int
+/*static inline*/ int
mgx_wait_fifo(struct mgx_softc *sc, unsigned int nfifo)
{
unsigned int i;
@@ -580,7 +573,7 @@
sc->sc_stride = sc->sc_width * (depth >> 3);
stride = sc->sc_stride >> 3;
#ifdef MGX_DEBUG
- sc->sc_height = 600;
+ sc->sc_height -= 150;
#endif
sc->sc_depth = depth;
@@ -628,24 +621,7 @@
mgx_write_1(sc, ATR_CURSOR_ENABLE, 0);
sc->sc_cursor = (uint8_t *)sc->sc_fbaddr + sc->sc_fbsize - 1024;
memset(sc->sc_cursor, 0xf0, 1024);
-
-#ifdef MGX_DEBUG
- int j;
- mgx_write_vga(sc, SEQ_INDEX, 0x10);
- mgx_write_vga(sc, SEQ_DATA, 0x12);
- for (i = 0x10; i < 0x30; i += 16) {
- printf("%02x:", i);
- for (j = 0; j < 16; j++) {
- mgx_write_vga(sc, SEQ_INDEX, i + j);
- printf(" %02x", mgx_read_vga(sc, SEQ_DATA));
- }
- printf("\n");
- }
-#if 0
- mgx_write_vga(sc, SEQ_INDEX, 0x1a);
- mgx_write_vga(sc, SEQ_DATA, 0x0f);
-#endif
-#endif
+ memset(sc->sc_in, 0, sizeof(sc->sc_in));
}
static void
@@ -751,9 +727,9 @@
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 + 7) & ~7;
- int x, y, wi, he;
+ uint8_t *s, *d;
+ uint32_t fg, bg, scratch = ((sc->sc_stride * sc->sc_height) + 7) & ~7;
+ int x, y, wi, he, len, i;
wi = font->fontwidth;
he = font->fontheight;
@@ -764,6 +740,12 @@
x = ri->ri_xorigin + col * wi;
y = ri->ri_yorigin + row * he;
+ if (!CHAR_IN_FONT(c, font)) {
+ c = 0x20;
+#ifdef MGX_DEBUG
+ bg = WSCOL_LIGHT_BLUE;
+#endif
+ }
if (c == 0x20) {
mgx_rectfill(sc, x, y, wi, he, bg);
if (attr & 1)
@@ -771,35 +753,42 @@
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 + 7) & ~7);
- 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);
+
+ /*
+ * do hardware colour expansion
+ * there has to be an upload port somewhere, since 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.
+ * stash most of the font in vram for speed, also:
+ * - the sbus-pci bridge doesn't seem to support 64bit accesses,
+ * they will cause occasional data corruption and all sorts of weird
+ * side effects, so copy font bitmaps byte-wise
+ * - at least it doesn't seem to need any kind of buffer flushing
+ * - still use rotation buffers for characters that don't fall into the
+ * 8 bit range
+ */
+
+ len = (ri->ri_fontscale + 7) & ~7;
+ s = WSFONT_GLYPH(c, font);
+ if ((c > 32) && (c < 256)) {
+ scratch += len * c;
+ if (sc->sc_in[c] == 0) {
+ d = (uint8_t *)sc->sc_fbaddr + scratch;
+ for (i = 0; i < ri->ri_fontscale; i++)
+ d[i] = s[i];
+ sc->sc_in[c] = 1;
+ }
+ } else {
+ sc->sc_buf = (sc->sc_buf + 1) & 7; /* rotate through 8 buffers */
+ scratch += sc->sc_buf * len;
+ d = (uint8_t *)sc->sc_fbaddr + scratch;
+ for (i = 0; i < ri->ri_fontscale; i++)
+ d[i] = s[i];
+ }
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) |
@@ -913,6 +902,14 @@
}
static void
+mgx_adapt(struct vcons_screen *scr, void *cookie)
+{
+ struct mgx_softc *sc = cookie;
+ memset(sc->sc_in, 0, sizeof(sc->sc_in));
+ glyphcache_adapt(scr, &sc->sc_gc);
+}
+
+static void
mgx_init_screen(void *cookie, struct vcons_screen *scr,
int existing, long *defattr)
{
@@ -950,7 +947,7 @@
ri->ri_width / ri->ri_font->fontwidth);
ri->ri_hw = scr;
-
+
#ifdef MGX_NOACCEL
if (0)
#endif
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