Support for clearing interrupts on a Rasterops Colorboard 364.

Thanks go to Michel Chalufour <michelc@tiac.net> for grovelling around for
me.

diff --git a/sys/arch/mac68k/dev/grf_mv.c b/sys/arch/mac68k/dev/grf_mv.c
index df032d7..6a01bf0 100644 (file)
--- a/sys/arch/mac68k/dev/grf_mv.c
+++ b/sys/arch/mac68k/dev/grf_mv.c
@@ -1,5 +1,5 @@
-/*     $OpenBSD: grf_mv.c,v 1.15 1997/05/02 00:59:52 briggs Exp $      */
-/*     $NetBSD: grf_mv.c,v 1.23 1997/05/02 00:54:29 briggs Exp $       */
+/*     $OpenBSD: grf_mv.c,v 1.16 1997/05/03 02:30:29 briggs Exp $      */
+/*     $NetBSD: grf_mv.c,v 1.24 1997/05/03 02:29:54 briggs Exp $       */
 
 /*
  * Copyright (c) 1995 Allen Briggs.  All rights reserved.
@@ -57,6 +57,7 @@ static void   grfmv_intr_generic __P((void *vsc, int slot));
 static void    grfmv_intr_radius __P((void *vsc, int slot));
 static void    grfmv_intr_cti __P((void *vsc, int slot));
 static void    grfmv_intr_cb264 __P((void *vsc, int slot));
+static void    grfmv_intr_cb364 __P((void *vsc, int slot));
 
 static int     grfmv_mode __P((struct grf_softc *gp, int cmd, void *arg));
 static caddr_t grfmv_phys __P((struct grf_softc *gp, vm_offset_t addr));
@@ -238,9 +239,11 @@ grfmv_attach(parent, self, aux)
                add_nubus_intr(sc->sc_slot.slot, grfmv_intr_cti, sc);
                break;
        case NUBUS_DRHW_CB264:
-       case NUBUS_DRHW_CB364:
                add_nubus_intr(sc->sc_slot.slot, grfmv_intr_cb264, sc);
                break;
+       case NUBUS_DRHW_CB364:
+               add_nubus_intr(sc->sc_slot.slot, grfmv_intr_cb364, sc);
+               break;
        case NUBUS_DRHW_SE30:
                /* Do nothing--SE/30 interrupts are disabled */
                break;
@@ -410,3 +413,94 @@ grfmv_intr_cb264(vsc, slot)
                        movl    #0x1,a0@(0xff6014)"
                : : "g" (slotbase) : "a0","d0","d1");
 }
+
+/*
+ * Support for the Colorboard 364 might be more complex than it needs to
+ * be.  If we can find more information about this card, this might be
+ * significantly simplified.  Contributions welcome...  :-)
+ */
+/*ARGSUSED*/
+static void
+grfmv_intr_cb364(vsc, slot)
+       void    *vsc;
+       int     slot;
+{
+       struct grfbus_softc *sc;
+       volatile char *slotbase;
+
+       sc = (struct grfbus_softc *)vsc;
+       slotbase = (volatile char *)sc->sc_slot.virtual_base;
+       asm volatile("  movl    %0,a0
+                       movl    a0@(0xfe6028),d0
+                       andl    #0x2,d0
+                       beq     _cb364_intr4
+                       movql   #0x3,d0
+                       movl    a0@(0xfe6018),d1
+                       movl    #0x3,a0@(0xfe6018)
+                       movw    a0@(0xfe7010),d2
+                       movl    d1,a0@(0xfe6018)
+                       movl    a0@(0xfe6020),d1
+                       btst    #0x06,d2
+                       beq     _cb364_intr0
+                       btst    #0x00,d1
+                       beq     _cb364_intr5
+                       bsr     _cb364_intr1
+                       bra     _cb364_intr_out
+               _cb364_intr0:
+                       btst    #0x00,d1
+                       bne     _cb364_intr5
+                       bsr     _cb364_intr1
+                       bra     _cb364_intr_out
+               _cb364_intr1:
+                       movl    d0,a0@(0xfe600c)
+                       nop
+                       tstb    d0
+                       beq     _cb364_intr3
+                       movl    #0x0002,a0@(0xfe6040)
+                       movl    #0x0105,a0@(0xfe6048)
+                       movl    #0x000e,a0@(0xfe604c)
+                       movl    #0x00c3,a0@(0xfe6058)
+                       movl    #0x0061,a0@(0xfe605c)
+                       btst    #0x06,d2
+                       beq     _cb364_intr2
+                       movl    #0x001c,a0@(0xfe6050)
+                       movl    #0x00bc,a0@(0xfe6054)
+                       movl    #0x0012,a0@(0xfe6060)
+                       movl    #0x000e,a0@(0xfe6044)
+                       movl    #0x00c3,a0@(0xfe6064)
+                       movl    #0x0061,a0@(0xfe6020)
+                       rts
+               _cb364_intr2:
+                       movl    #0x0016,a0@(0xfe6050)
+                       movl    #0x00b6,a0@(0xfe6054)
+                       movl    #0x0011,a0@(0xfe6060)
+                       movl    #0x0101,a0@(0xfe6044)
+                       movl    #0x00bf,a0@(0xfe6064)
+                       movl    #0x0001,a0@(0xfe6020)
+                       rts
+               _cb364_intr3:
+                       movl    #0x0002,a0@(0xfe6040)
+                       movl    #0x0209,a0@(0xfe6044)
+                       movl    #0x020c,a0@(0xfe6048)
+                       movl    #0x000f,a0@(0xfe604c)
+                       movl    #0x0027,a0@(0xfe6050)
+                       movl    #0x00c7,a0@(0xfe6054)
+                       movl    #0x00d7,a0@(0xfe6058)
+                       movl    #0x006b,a0@(0xfe605c)
+                       movl    #0x0029,a0@(0xfe6060)
+                       oril    #0x0040,a0@(0xfe6064)
+                       movl    #0x0000,a0@(0xfe6020)
+                       rts
+               _cb364_intr4:
+                       movq    #0x00,d0
+               _cb364_intr5:
+                       movl    a0@(0xfe600c),d1
+                       andl    #0x3,d1
+                       cmpl    d1,d0
+                       beq     _cb364_intr_out
+                       bsr     _cb364_intr1
+               _cb364_intr_out:
+                       movl    #0x1,a0@(0xfe6014)
+               _cb364_intr_quit:
+               " : : "g" (slotbase) : "a0","d0","d1","d2");
+}