[src/trunk]: src/sys/dev/sbus use a shadow framebuffer

[macallan <macallan%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f4f0bcac977a
branches:  trunk
changeset: 753739:f4f0bcac977a
user:      macallan <macallan%NetBSD.org@localhost>
date:      Thu Apr 08 16:49:34 2010 +0000

description:
use a shadow framebuffer

diffstat:

 sys/dev/sbus/cgtwelve.c |  81 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 78 insertions(+), 3 deletions(-)

diffs (131 lines):

diff -r e36193190095 -r f4f0bcac977a sys/dev/sbus/cgtwelve.c
--- a/sys/dev/sbus/cgtwelve.c   Thu Apr 08 16:45:53 2010 +0000
+++ b/sys/dev/sbus/cgtwelve.c   Thu Apr 08 16:49:34 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cgtwelve.c,v 1.1 2010/03/24 00:33:06 macallan Exp $ */
+/*     $NetBSD: cgtwelve.c,v 1.2 2010/04/08 16:49:34 macallan Exp $ */
 
 /*-
  * Copyright (c) 2010 Michael Lorenz
@@ -29,7 +29,7 @@
 /* a console driver for the Sun CG12 / Matrox SG3 graphics board */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cgtwelve.c,v 1.1 2010/03/24 00:33:06 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cgtwelve.c,v 1.2 2010/04/08 16:49:34 macallan Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -37,6 +37,7 @@
 #include <sys/device.h>
 #include <sys/ioctl.h>
 #include <sys/conf.h>
+#include <sys/kmem.h>
 
 #include <sys/bus.h>
 #include <machine/autoconf.h>
@@ -62,6 +63,7 @@
        device_t        sc_dev;
        bus_space_tag_t sc_tag;
        void            *sc_fbaddr;
+       void            *sc_shadow;
        int             sc_width;
        int             sc_height;
        int             sc_stride;
@@ -162,6 +164,7 @@
                
        aprint_normal_dev(self, "%d x %d\n", sc->sc_width, sc->sc_height);
 
+       sc->sc_shadow = kmem_alloc(sc->sc_fbsize, KM_SLEEP);
        isconsole = fb_is_console(node);
 
        sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
@@ -193,7 +196,74 @@
        aa.accesscookie = &sc->vd;
 
        config_found(self, &aa, wsemuldisplaydevprint);
+#if 0
+       if (sbus_bus_map(sa->sa_bustag,
+                        sa->sa_slot,
+                        sa->sa_offset + CG12_OFF_REGISTERS,
+                        0xc0000, 0, &bh) == 0) {
+               int i, j;
 
+               bus_space_write_4(sa->sa_bustag, bh, CG12_EIC_RESET, 0);
+
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_PLN_RDMSK_HOST, CG12_PLN_RD_ENABLE);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_PLN_WRMSK_HOST, CG12_PLN_WR_ENABLE);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_PLN_SL_HOST, CG12_PLN_SL_ENABLE);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_HPAGE, CG12_HPAGE_ENABLE);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_HACCESS, CG12_HACCESS_ENABLE);
+               memset(sc->sc_fbaddr, 0, 0x10000);
+
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_PLN_RDMSK_LOC, 0xffffffff);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_PLN_WRMSK_LOC, 0xffffffff);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_LACCESS, CG12_HACCESS_24BIT);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_LPAGE, CG12_HPAGE_24BIT);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_PLN_SL_LOCAL0, CG12_PLN_SL_24BIT);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_DWG_CTL, DWGCTL_BITBLT | 0x00f30000);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_F_XLEFT, 10);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_F_XRIGHT, 1010);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_Y_DST, 10);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_COLOUR0, 0xffffffff);
+#if 1
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_LENGTH | 0x1000, 800);
+#endif
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_PLN_RDMSK_HOST, CG12_PLN_RD_OVERLAY);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_PLN_WRMSK_HOST, CG12_PLN_WR_OVERLAY);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12DPU_PLN_SL_HOST, CG12_PLN_SL_OVERLAY);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_HPAGE, CG12_HPAGE_OVERLAY);
+               bus_space_write_4(sa->sa_bustag, bh,
+                   CG12APU_HACCESS, CG12_HACCESS_OVERLAY);
+
+               for (i = 0x100; i < 0x300; i += 32) {
+                       printf("%04x:", i);
+                       for (j = 0; j < 32; j += 4) {
+                               printf(" %08x", bus_space_read_4(sa->sa_bustag,
+                                   bh, i + j));
+                       }
+                       printf("\n");
+               }
+               bus_space_unmap(sa->sa_bustag, bh, 0xc0000);
+       }
+       panic("poof");
+#endif
 }
 
 
@@ -210,7 +280,12 @@
        ri->ri_stride = sc->sc_stride;
        ri->ri_flg = RI_CENTER;
 
-       ri->ri_bits = sc->sc_fbaddr;
+       if (sc->sc_shadow == NULL) {
+               ri->ri_bits = sc->sc_fbaddr;
+       } else {
+               ri->ri_hwbits = sc->sc_fbaddr;
+               ri->ri_bits = sc->sc_shadow;
+       }
 
        rasops_init(ri, ri->ri_height/8, ri->ri_width/8);
        ri->ri_caps = WSSCREEN_REVERSE;