arch/mips/sni/setup.c

   1 /*
   2  * Setup pointers to hardware-dependent routines.
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  *
   8  * Copyright (C) 1996, 97, 98, 2000, 03, 04, 06 Ralf Baechle (ralf@linux-mips.org)
   9  */
  10 #include <linux/config.h>
  11 #include <linux/eisa.h>
  12 #include <linux/hdreg.h>
  13 #include <linux/ioport.h>
  14 #include <linux/sched.h>
  15 #include <linux/init.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/mc146818rtc.h>
  18 #include <linux/pm.h>
  19 #include <linux/pci.h>
  20 #include <linux/console.h>
  21 #include <linux/fb.h>
  22 #include <linux/tty.h>
  23
  24 #ifdef CONFIG_ARC
  25 #include <asm/arc/types.h>
  26 #include <asm/sgialib.h>
  27 #endif
  28
  29 #include <asm/bcache.h>
  30 #include <asm/bootinfo.h>
  31 #include <asm/io.h>
  32 #include <asm/irq.h>
  33 #include <asm/mc146818-time.h>
  34 #include <asm/processor.h>
  35 #include <asm/ptrace.h>
  36 #include <asm/reboot.h>
  37 #include <asm/sni.h>
  38 #include <asm/time.h>
  39 #include <asm/traps.h>
  40
  41 extern void sni_machine_restart(char *command);
  42 extern void sni_machine_halt(void);
  43 extern void sni_machine_power_off(void);
  44
  45 static void __init sni_rm200_pci_timer_setup(struct irqaction *irq)
  46 {
  47         /* set the clock to 100 Hz */
  48         outb_p(0x34,0x43);              /* binary, mode 2, LSB/MSB, ch 0 */
  49         outb_p(LATCH & 0xff , 0x40);    /* LSB */
  50         outb(LATCH >> 8 , 0x40);        /* MSB */
  51         setup_irq(0, irq);
  52 }
  53
  54 /*
  55  * A bit more gossip about the iron we're running on ...
  56  */
  57 static inline void sni_pcimt_detect(void)
  58 {
  59         char boardtype[80];
  60         unsigned char csmsr;
  61         char *p = boardtype;
  62         unsigned int asic;
  63
  64         csmsr = *(volatile unsigned char *)PCIMT_CSMSR;
  65
  66         p += sprintf(p, "%s PCI", (csmsr & 0x80) ? "RM200" : "RM300");
  67         if ((csmsr & 0x80) == 0)
  68                 p += sprintf(p, ", board revision %s",
  69                              (csmsr & 0x20) ? "D" : "C");
  70         asic = csmsr & 0x80;
  71         asic = (csmsr & 0x08) ? asic : !asic;
  72         p += sprintf(p, ", ASIC PCI Rev %s", asic ? "1.0" : "1.1");
  73         printk("%s.\n", boardtype);
  74 }
  75
  76 static void __init sni_display_setup(void)
  77 {
  78 #if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_ARC)
  79         struct screen_info *si = &screen_info;
  80         DISPLAY_STATUS *di;
  81
  82         di = ArcGetDisplayStatus(1);
  83
  84         if (di) {
  85                 si->orig_x              = di->CursorXPosition;
  86                 si->orig_y              = di->CursorYPosition;
  87                 si->orig_video_cols     = di->CursorMaxXPosition;
  88                 si->orig_video_lines    = di->CursorMaxYPosition;
  89                 si->orig_video_isVGA    = VIDEO_TYPE_VGAC;
  90                 si->orig_video_points   = 16;
  91         }
  92 #endif
  93 }
  94
  95 static struct resource sni_io_resource = {
  96         .start  = 0x00001000UL,
  97         .end    = 0x03bfffffUL,
  98         .name   = "PCIMT IO MEM",
  99         .flags  = IORESOURCE_IO,
 100 };
 101
 102 static struct resource pcimt_io_resources[] = {
 103         {
 104                 .start  = 0x00,
 105                 .end    = 0x1f,
 106                 .name   = "dma1",
 107                 .flags  = IORESOURCE_BUSY
 108         }, {
 109                 .start  =  0x40,
 110                 .end    = 0x5f,
 111                 .name   = "timer",
 112                 .flags  = IORESOURCE_BUSY
 113         }, {
 114                 .start  =  0x60,
 115                 .end    = 0x6f,
 116                 .name   = "keyboard",
 117                 .flags  = IORESOURCE_BUSY
 118         }, {
 119                 .start  =  0x80,
 120                 .end    = 0x8f,
 121                 .name   = "dma page reg",
 122                 .flags  = IORESOURCE_BUSY
 123         }, {
 124                 .start  =  0xc0,
 125                 .end    = 0xdf,
 126                 .name   = "dma2",
 127                 .flags  = IORESOURCE_BUSY
 128         }, {
 129                 .start  =  0xcfc,
 130                 .end    = 0xcff,
 131                 .name   = "PCI config data",
 132                 .flags  = IORESOURCE_BUSY
 133         }
 134 };
 135
 136 static struct resource sni_mem_resource = {
 137         .start  = 0x10000000UL,
 138         .end    = 0xffffffffUL,
 139         .name   = "PCIMT PCI MEM",
 140         .flags  = IORESOURCE_MEM
 141 };
 142
 143 /*
 144  * The RM200/RM300 has a few holes in it's PCI/EISA memory address space used
 145  * for other purposes.  Be paranoid and allocate all of the before the PCI
 146  * code gets a chance to to map anything else there ...
 147  *
 148  * This leaves the following areas available:
 149  *
 150  * 0x10000000 - 0x1009ffff (640kB) PCI/EISA/ISA Bus Memory
 151  * 0x10100000 - 0x13ffffff ( 15MB) PCI/EISA/ISA Bus Memory
 152  * 0x18000000 - 0x1fbfffff (124MB) PCI/EISA Bus Memory
 153  * 0x1ff08000 - 0x1ffeffff (816kB) PCI/EISA Bus Memory
 154  * 0xa0000000 - 0xffffffff (1.5GB) PCI/EISA Bus Memory
 155  */
 156 static struct resource pcimt_mem_resources[] = {
 157         {
 158                 .start  = 0x100a0000,
 159                 .end    = 0x100bffff,
 160                 .name   = "Video RAM area",
 161                 .flags  = IORESOURCE_BUSY
 162         }, {
 163                 .start  = 0x100c0000,
 164                 .end    = 0x100fffff,
 165                 .name   = "ISA Reserved",
 166                 .flags  = IORESOURCE_BUSY
 167         }, {
 168                 .start  = 0x14000000,
 169                 .end    = 0x17bfffff,
 170                 .name   = "PCI IO",
 171                 .flags  = IORESOURCE_BUSY
 172         }, {
 173                 .start  = 0x17c00000,
 174                 .end    = 0x17ffffff,
 175                 .name   = "Cache Replacement Area",
 176                 .flags  = IORESOURCE_BUSY
 177         }, {
 178                 .start  = 0x1a000000,
 179                 .end    = 0x1a000003,
 180                 .name   = "PCI INT Acknowledge",
 181                 .flags  = IORESOURCE_BUSY
 182         }, {
 183                 .start  = 0x1fc00000,
 184                 .end    = 0x1fc7ffff,
 185                 .name   = "Boot PROM",
 186                 .flags  = IORESOURCE_BUSY
 187         }, {
 188                 .start  = 0x1fc80000,
 189                 .end    = 0x1fcfffff,
 190                 .name   = "Diag PROM",
 191                 .flags  = IORESOURCE_BUSY
 192         }, {
 193                 .start  = 0x1fd00000,
 194                 .end    = 0x1fdfffff,
 195                 .name   = "X-Bus",
 196                 .flags  = IORESOURCE_BUSY
 197         }, {
 198                 .start  = 0x1fe00000,
 199                 .end    = 0x1fefffff,
 200                 .name   = "BIOS map",
 201                 .flags  = IORESOURCE_BUSY
 202         }, {
 203                 .start  = 0x1ff00000,
 204                 .end    = 0x1ff7ffff,
 205                 .name   = "NVRAM / EEPROM",
 206                 .flags  = IORESOURCE_BUSY
 207         }, {
 208                 .start  = 0x1fff0000,
 209                 .end    = 0x1fffefff,
 210                 .name   = "ASIC PCI",
 211                 .flags  = IORESOURCE_BUSY
 212         }, {
 213                 .start  = 0x1ffff000,
 214                 .end    = 0x1fffffff,
 215                 .name   = "MP Agent",
 216                 .flags  = IORESOURCE_BUSY
 217         }, {
 218                 .start  = 0x20000000,
 219                 .end    = 0x9fffffff,
 220                 .name   = "Main Memory",
 221                 .flags  = IORESOURCE_BUSY
 222         }
 223 };
 224
 225 static void __init sni_resource_init(void)
 226 {
 227         int i;
 228
 229         /* request I/O space for devices used on all i[345]86 PCs */
 230         for (i = 0; i < ARRAY_SIZE(pcimt_io_resources); i++)
 231                 request_resource(&ioport_resource, pcimt_io_resources + i);
 232
 233         /* request mem space for pcimt-specific devices */
 234         for (i = 0; i < ARRAY_SIZE(pcimt_mem_resources); i++)
 235                 request_resource(&sni_mem_resource, pcimt_mem_resources + i);
 236
 237         ioport_resource.end = sni_io_resource.end;
 238 }
 239
 240 extern struct pci_ops sni_pci_ops;
 241
 242 static struct pci_controller sni_controller = {
 243         .pci_ops        = &sni_pci_ops,
 244         .mem_resource   = &sni_mem_resource,
 245         .mem_offset     = 0x10000000UL,
 246         .io_resource    = &sni_io_resource,
 247         .io_offset      = 0x00000000UL
 248 };
 249
 250 static inline void sni_pcimt_time_init(void)
 251 {
 252         rtc_mips_get_time = mc146818_get_cmos_time;
 253         rtc_mips_set_time = mc146818_set_rtc_mmss;
 254 }
 255
 256 void __init plat_mem_setup(void)
 257 {
 258         sni_pcimt_detect();
 259         sni_pcimt_sc_init();
 260         sni_pcimt_time_init();
 261
 262         set_io_port_base(SNI_PORT_BASE);
 263         ioport_resource.end = sni_io_resource.end;
 264
 265         /*
 266          * Setup (E)ISA I/O memory access stuff
 267          */
 268         isa_slot_offset = 0xb0000000;
 269 #ifdef CONFIG_EISA
 270         EISA_bus = 1;
 271 #endif
 272
 273         sni_resource_init();
 274         board_timer_setup = sni_rm200_pci_timer_setup;
 275
 276         _machine_restart = sni_machine_restart;
 277         _machine_halt = sni_machine_halt;
 278         pm_power_off = sni_machine_power_off;
 279
 280         sni_display_setup();
 281
 282 #ifdef CONFIG_PCI
 283         register_pci_controller(&sni_controller);
 284 #endif
 285 }