sys/arch/shark/ofw/igsfb_ofbus.c

   1 /*      $NetBSD: igsfb_ofbus.c,v 1.9 2009/11/10 22:24:57 macallan Exp $ */
   2
   3 /*
   4  * Copyright (c) 2006 Michael Lorenz
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * Integraphics Systems IGA 168x and CyberPro series.
  30  * ofbus attachment for Valeriy E. Ushakov's igsfb driver
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: igsfb_ofbus.c,v 1.9 2009/11/10 22:24:57 macallan Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/kernel.h>
  39 #include <sys/device.h>
  40 #include <sys/malloc.h>
  41 #include <sys/buf.h>
  42
  43 #include <machine/bus.h>
  44 #include <machine/intr.h>
  45 #include <machine/ofw.h>
  46
  47 #include <dev/isa/isavar.h>
  48
  49 #include <dev/wscons/wsdisplayvar.h>
  50 #include <dev/wscons/wsconsio.h>
  51 #include <dev/rasops/rasops.h>
  52 #include <dev/wscons/wsdisplay_vconsvar.h>
  53 #include <dev/ofw/openfirm.h>
  54
  55 #include <dev/ic/igsfbreg.h>
  56 #include <dev/ic/igsfbvar.h>
  57 #include <shark/ofw/igsfb_ofbusvar.h>
  58
  59 static int      igsfb_ofbus_is_console(int);
  60
  61 static int igsfb_ofbus_console = 0;
  62 static int igsfb_ofbus_phandle = 0;
  63
  64
  65
  66 static int      igsfb_ofbus_match(struct device *, struct cfdata *, void *);
  67 static void     igsfb_ofbus_attach(struct device *, struct device *, void *);
  68 static int      igsfb_setup_dc(struct igsfb_devconfig *);
  69 static paddr_t  igsfb_ofbus_mmap(void *, void *, off_t, int);
  70
  71 CFATTACH_DECL(igsfb_ofbus, sizeof(struct igsfb_softc),
  72     igsfb_ofbus_match, igsfb_ofbus_attach, NULL, NULL);
  73
  74 static const char const *compat_strings[] = { "igs,cyperpro2010", NULL };
  75
  76 vaddr_t igsfb_mem_vaddr = 0, igsfb_mmio_vaddr = 0;
  77 paddr_t igsfb_mem_paddr;
  78 extern paddr_t isa_io_physaddr;
  79 struct bus_space igsfb_memt, igsfb_iot;
  80
  81 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0)
  82 extern int console_ihandle;
  83 #endif
  84
  85 int
  86 igsfb_ofbus_cnattach(bus_space_tag_t iot, bus_space_tag_t memt)
  87 {
  88         struct igsfb_devconfig *dc;
  89         int ret;
  90         int chosen_phandle, igs_node;
  91         int stdout_ihandle, stdout_phandle;
  92         uint32_t regs[16];
  93         char mode_buffer[64];
  94
  95         stdout_phandle = 0;
  96
  97         /* first find out if there's a CyberPro at all in this machine */
  98         igs_node = OF_finddevice("/vlbus/display");
  99         if (igs_node == -1)
 100                 return ENXIO;
 101         if (of_compatible(igs_node, compat_strings) < 0)
 102                 return ENXIO;
 103
 104         /*
 105          * now we know there's a CyberPro in this machine so map it into
 106          * kernel space, even if it's not the console
 107          */
 108         if (OF_getprop(igs_node, "reg", regs, sizeof(regs)) <= 0)
 109                 return ENXIO;
 110
 111         igsfb_mem_paddr = be32toh(regs[13]);
 112         /* 4MB VRAM aperture, bufferable and cacheable */
 113         igsfb_mem_vaddr = ofw_map(igsfb_mem_paddr, 0x00400000, L2_B | L2_C);
 114         /* MMIO registers */
 115         igsfb_mmio_vaddr = ofw_map(igsfb_mem_paddr + IGS_MEM_MMIO_SELECT,
 116             0x00100000, 0);
 117
 118         memcpy(&igsfb_memt, memt, sizeof(struct bus_space));
 119         igsfb_memt.bs_cookie = (void *)igsfb_mem_vaddr;
 120         memcpy(&igsfb_iot, memt, sizeof(struct bus_space));
 121         igsfb_iot.bs_cookie = (void *)igsfb_mmio_vaddr;
 122
 123         /*
 124          * check if the firmware output device is indeed the CyberPro
 125          */
 126         if ((chosen_phandle = OF_finddevice("/chosen")) == -1 ||
 127             OF_getprop(chosen_phandle, "stdout", &stdout_ihandle,
 128             sizeof(stdout_ihandle)) != sizeof(stdout_ihandle)) {
 129                 return ENXIO;
 130         }
 131         stdout_ihandle = of_decode_int((void *)&stdout_ihandle);
 132         stdout_phandle = OF_instance_to_package(stdout_ihandle);
 133
 134         if (stdout_phandle != igs_node)
 135                 return ENXIO;
 136
 137         /* ok, now setup and attach the console */
 138         dc = &igsfb_console_dc;
 139         ret = igsfb_setup_dc(dc);
 140         if (ret)
 141                 return ret;
 142
 143         if (of_get_mode_string(mode_buffer, sizeof(mode_buffer))) {
 144                 strcpy(dc->dc_modestring, mode_buffer);
 145         }
 146
 147         ret = igsfb_cnattach_subr(dc);
 148         if (ret)
 149                 return ret;
 150
 151         igsfb_ofbus_console = 1;
 152         igsfb_ofbus_phandle = stdout_phandle;
 153 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0)
 154         console_ihandle = stdout_ihandle;
 155 #endif
 156         return 0;
 157 }
 158
 159 static int
 160 igsfb_setup_dc(struct igsfb_devconfig *dc)
 161 {
 162         int ret;
 163
 164         dc->dc_id = 0x2010;
 165         dc->dc_memt = &igsfb_memt;
 166         dc->dc_memaddr = 0;
 167         dc->dc_memsz= 0x00400000;
 168         dc->dc_memflags = 0;
 169
 170         dc->dc_iot = &igsfb_iot;
 171         dc->dc_iobase = 0;
 172         dc->dc_ioflags = 0;
 173         dc->dc_mmap = igsfb_ofbus_mmap;
 174         if (bus_space_map(dc->dc_iot,
 175                           dc->dc_iobase + IGS_REG_BASE, IGS_REG_SIZE,
 176                           dc->dc_ioflags,
 177                           &dc->dc_ioh) != 0)
 178         {
 179                 printf("unable to map I/O registers\n");
 180                 return 1;
 181         }
 182         ret = igsfb_enable(dc->dc_iot, dc->dc_iobase, dc->dc_ioflags);
 183         if (ret)
 184                 return ret;
 185         return 0;
 186 }
 187
 188 static int
 189 igsfb_ofbus_is_console(int phandle)
 190 {
 191
 192         return igsfb_ofbus_console && (phandle == igsfb_ofbus_phandle);
 193 }
 194
 195
 196 static int
 197 igsfb_ofbus_match(struct device *parent, struct cfdata *match, void *aux)
 198 {
 199         struct ofbus_attach_args *oba = aux;
 200
 201         if (of_compatible(oba->oba_phandle, compat_strings) < 0)
 202                 return 0;
 203
 204         return 10;      /* beat vga etc. */
 205 }
 206
 207 static void
 208 igsfb_ofbus_attach(struct device *parent, struct device *self, void *aux)
 209 {
 210         struct igsfb_softc *sc = (struct igsfb_softc *)self;
 211         struct ofbus_attach_args *oba = aux;
 212         uint32_t regs[16];
 213         int isconsole, ret;
 214
 215         if (igsfb_ofbus_is_console(oba->oba_phandle)) {
 216                 isconsole = 1;
 217                 sc->sc_dc = &igsfb_console_dc;
 218         } else {
 219                 isconsole = 0;
 220                 sc->sc_dc = malloc(sizeof(struct igsfb_devconfig),
 221                                    M_DEVBUF, M_NOWAIT | M_ZERO);
 222                 if (sc->sc_dc == NULL)
 223                         panic("unable to allocate igsfb_devconfig");
 224                 if (OF_getprop(oba->oba_phandle, "reg",
 225                                regs, sizeof(regs)) <= 0)
 226                 {
 227                         printf(": unable to read 'reg' property\n");
 228                         return;
 229                 }
 230                 ret = igsfb_setup_dc(sc->sc_dc);
 231                 if (ret)
 232                         return;
 233         }
 234         printf(": IGS CyberPro 2010 at 0x%08x\n", (uint32_t)igsfb_mem_paddr);
 235
 236         igsfb_attach_subr(sc, isconsole);
 237 }
 238
 239 static paddr_t
 240 igsfb_ofbus_mmap(void *v, void *vs, off_t offset, int prot)
 241 {
 242
 243 #ifdef PCI_MAGIC_IO_RANGE
 244         /* access to IO ports */
 245         if ((offset >= PCI_MAGIC_IO_RANGE) &&
 246             (offset < (PCI_MAGIC_IO_RANGE + 0x10000))) {
 247                 paddr_t pa;
 248
 249                 pa = isa_io_physaddr + offset - PCI_MAGIC_IO_RANGE;
 250                 return arm_btop(pa);
 251         }
 252 #endif
 253         /*
 254          * we also need to allow mapping of the whole aperture, including MMIO
 255          * registers on CyberPro at its physical address
 256          */
 257         if ((offset >= igsfb_mem_paddr) &&
 258             (offset < (igsfb_mem_paddr + 0x01000000)))
 259                 return arm_btop(offset);
 260
 261         return -1;
 262 }