sys/dev/sbus/cgthree_sbus.c

   1 /*      $NetBSD: cgthree_sbus.c,v 1.28 2009/09/18 12:23:16 tsutsui Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Paul Kranenburg.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Copyright (c) 1992, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * This software was developed by the Computer Systems Engineering group
  37  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
  38  * contributed to Berkeley.
  39  *
  40  * All advertising materials mentioning features or use of this software
  41  * must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Lawrence Berkeley Laboratory.
  44  *
  45  * Redistribution and use in source and binary forms, with or without
  46  * modification, are permitted provided that the following conditions
  47  * are met:
  48  * 1. Redistributions of source code must retain the above copyright
  49  *    notice, this list of conditions and the following disclaimer.
  50  * 2. Redistributions in binary form must reproduce the above copyright
  51  *    notice, this list of conditions and the following disclaimer in the
  52  *    documentation and/or other materials provided with the distribution.
  53  * 3. Neither the name of the University nor the names of its contributors
  54  *    may be used to endorse or promote products derived from this software
  55  *    without specific prior written permission.
  56  *
  57  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  58  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  59  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  60  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  61  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  62  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  63  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  64  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  65  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  66  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  67  * SUCH DAMAGE.
  68  *
  69  *      @(#)cgthree.c   8.2 (Berkeley) 10/30/93
  70  */
  71
  72 /*
  73  * color display (cgthree) driver.
  74  *
  75  * Does not handle interrupts, even though they can occur.
  76  *
  77  * XXX should defer colormap updates to vertical retrace interrupts
  78  */
  79
  80 #include <sys/cdefs.h>
  81 __KERNEL_RCSID(0, "$NetBSD: cgthree_sbus.c,v 1.28 2009/09/18 12:23:16 tsutsui Exp $");
  82
  83 #include <sys/param.h>
  84 #include <sys/systm.h>
  85 #include <sys/buf.h>
  86 #include <sys/device.h>
  87 #include <sys/ioctl.h>
  88 #include <sys/malloc.h>
  89 #include <sys/mman.h>
  90 #include <sys/tty.h>
  91 #include <sys/conf.h>
  92
  93 #include <sys/bus.h>
  94 #include <machine/autoconf.h>
  95
  96 #include <dev/sun/fbio.h>
  97 #include <dev/sun/fbvar.h>
  98
  99 #include <dev/sun/btreg.h>
 100 #include <dev/sun/btvar.h>
 101 #include <dev/sun/cgthreereg.h>
 102 #include <dev/sun/cgthreevar.h>
 103
 104 #include <dev/sbus/sbusvar.h>
 105
 106
 107 /* autoconfiguration driver */
 108 static int      cgthreematch_sbus(device_t, cfdata_t, void *);
 109 static void     cgthreeattach_sbus(device_t, device_t, void *);
 110
 111 CFATTACH_DECL_NEW(cgthree_sbus, sizeof(struct cgthree_softc),
 112     cgthreematch_sbus, cgthreeattach_sbus, NULL, NULL);
 113
 114 /*
 115  * Match a cgthree.
 116  */
 117 int
 118 cgthreematch_sbus(device_t parent, cfdata_t cf, void *aux)
 119 {
 120         struct sbus_attach_args *sa = aux;
 121
 122         if (strcmp(cf->cf_name, sa->sa_name) == 0)
 123                 return 100;     /* beat genfb(4) */
 124
 125         return 0;
 126 }
 127
 128 /*
 129  * Attach a display.  We need to notice if it is the console, too.
 130  */
 131 void
 132 cgthreeattach_sbus(device_t parent, device_t self, void *args)
 133 {
 134         struct cgthree_softc *sc = device_private(self);
 135         struct sbus_attach_args *sa = args;
 136         struct fbdevice *fb = &sc->sc_fb;
 137         int node = sa->sa_node;
 138         int isconsole;
 139         const char *name;
 140         bus_space_handle_t bh;
 141
 142         sc->sc_dev = self;
 143
 144         /* Remember cookies for cgthree_mmap() */
 145         sc->sc_bustag = sa->sa_bustag;
 146         sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset);
 147
 148         fb->fb_device = self;
 149         fb->fb_flags = device_cfdata(self)->cf_flags & FB_USERMASK;
 150         fb->fb_type.fb_type = FBTYPE_SUN3COLOR;
 151
 152         fb->fb_type.fb_depth = 8;
 153         fb_setsize_obp(fb, fb->fb_type.fb_depth, 1152, 900, node);
 154
 155         /*
 156          * When the ROM has mapped in a cgthree display, the address
 157          * maps only the video RAM, so in any case we have to map the
 158          * registers ourselves.  We only need the video RAM if we are
 159          * going to print characters via rconsole.
 160          */
 161         if (sbus_bus_map(sa->sa_bustag,
 162                          sa->sa_slot,
 163                          sa->sa_offset + CG3REG_REG,
 164                          sizeof(struct fbcontrol),
 165                          BUS_SPACE_MAP_LINEAR, &bh) != 0) {
 166                 aprint_error_dev(self, "cannot map control registers\n");
 167                 return;
 168         }
 169         sc->sc_fbc = (struct fbcontrol *)bus_space_vaddr(sa->sa_bustag, bh);
 170
 171         isconsole = fb_is_console(node);
 172         name = prom_getpropstring(node, "model");
 173         if (name == NULL)
 174                 name = "cgthree";
 175
 176         if (sa->sa_npromvaddrs != 0)
 177                 fb->fb_pixels = (void *)(u_long)sa->sa_promvaddrs[0];
 178         if (isconsole && fb->fb_pixels == NULL) {
 179                 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
 180                 if (sbus_bus_map(sa->sa_bustag,
 181                                  sa->sa_slot,
 182                                  sa->sa_offset + CG3REG_MEM,
 183                                  ramsize,
 184                                  BUS_SPACE_MAP_LINEAR, &bh) != 0) {
 185                         aprint_error_dev(self, "cannot map pixels\n");
 186                         return;
 187                 }
 188                 fb->fb_pixels = (char *)bus_space_vaddr(sa->sa_bustag, bh);
 189         }
 190
 191         cgthreeattach(sc, name, isconsole);
 192 }