git.oblomov.eu Git - linux-2.6/blob - arch/mips/dec/setup.c

   1 /*
   2  * System-specific setup, especially interrupts.
   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) 1998 Harald Koerfgen
   9  * Copyright (C) 2000, 2001, 2002, 2003, 2005  Maciej W. Rozycki
  10  */
  11 #include <linux/console.h>
  12 #include <linux/init.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/ioport.h>
  15 #include <linux/module.h>
  16 #include <linux/param.h>
  17 #include <linux/sched.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/types.h>
  20 #include <linux/pm.h>
  21
  22 #include <asm/bootinfo.h>
  23 #include <asm/cpu.h>
  24 #include <asm/cpu-features.h>
  25 #include <asm/irq.h>
  26 #include <asm/irq_cpu.h>
  27 #include <asm/mipsregs.h>
  28 #include <asm/reboot.h>
  29 #include <asm/time.h>
  30 #include <asm/traps.h>
  31 #include <asm/wbflush.h>
  32
  33 #include <asm/dec/interrupts.h>
  34 #include <asm/dec/ioasic.h>
  35 #include <asm/dec/ioasic_addrs.h>
  36 #include <asm/dec/ioasic_ints.h>
  37 #include <asm/dec/kn01.h>
  38 #include <asm/dec/kn02.h>
  39 #include <asm/dec/kn02ba.h>
  40 #include <asm/dec/kn02ca.h>
  41 #include <asm/dec/kn03.h>
  42 #include <asm/dec/kn230.h>
  43 #include <asm/dec/system.h>
  44
  45
  46 extern void dec_machine_restart(char *command);
  47 extern void dec_machine_halt(void);
  48 extern void dec_machine_power_off(void);
  49 extern irqreturn_t dec_intr_halt(int irq, void *dev_id);
  50
  51 unsigned long dec_kn_slot_base, dec_kn_slot_size;
  52
  53 EXPORT_SYMBOL(dec_kn_slot_base);
  54 EXPORT_SYMBOL(dec_kn_slot_size);
  55
  56 spinlock_t ioasic_ssr_lock;
  57
  58 volatile u32 *ioasic_base;
  59
  60 EXPORT_SYMBOL(ioasic_base);
  61
  62 /*
  63  * IRQ routing and priority tables.  Priorites are set as follows:
  64  *
  65  *              KN01    KN230   KN02    KN02-BA KN02-CA KN03
  66  *
  67  * MEMORY       CPU     CPU     CPU     ASIC    CPU     CPU
  68  * RTC          CPU     CPU     CPU     ASIC    CPU     CPU
  69  * DMA          -       -       -       ASIC    ASIC    ASIC
  70  * SERIAL0      CPU     CPU     CSR     ASIC    ASIC    ASIC
  71  * SERIAL1      -       -       -       ASIC    -       ASIC
  72  * SCSI         CPU     CPU     CSR     ASIC    ASIC    ASIC
  73  * ETHERNET     CPU     *       CSR     ASIC    ASIC    ASIC
  74  * other        -       -       -       ASIC    -       -
  75  * TC2          -       -       CSR     CPU     ASIC    ASIC
  76  * TC1          -       -       CSR     CPU     ASIC    ASIC
  77  * TC0          -       -       CSR     CPU     ASIC    ASIC
  78  * other        -       CPU     -       CPU     ASIC    ASIC
  79  * other        -       -       -       -       CPU     CPU
  80  *
  81  * * -- shared with SCSI
  82  */
  83
  84 int dec_interrupt[DEC_NR_INTS] = {
  85         [0 ... DEC_NR_INTS - 1] = -1
  86 };
  87
  88 EXPORT_SYMBOL(dec_interrupt);
  89
  90 int_ptr cpu_mask_nr_tbl[DEC_MAX_CPU_INTS][2] = {
  91         { { .i = ~0 }, { .p = dec_intr_unimplemented } },
  92 };
  93 int_ptr asic_mask_nr_tbl[DEC_MAX_ASIC_INTS][2] = {
  94         { { .i = ~0 }, { .p = asic_intr_unimplemented } },
  95 };
  96 int cpu_fpu_mask = DEC_CPU_IRQ_MASK(DEC_CPU_INR_FPU);
  97
  98 static struct irqaction ioirq = {
  99         .handler = no_action,
 100         .name = "cascade",
 101 };
 102 static struct irqaction fpuirq = {
 103         .handler = no_action,
 104         .name = "fpu",
 105 };
 106
 107 static struct irqaction busirq = {
 108         .flags = IRQF_DISABLED,
 109         .name = "bus error",
 110 };
 111
 112 static struct irqaction haltirq = {
 113         .handler = dec_intr_halt,
 114         .name = "halt",
 115 };
 116
 117
 118 /*
 119  * Bus error (DBE/IBE exceptions and bus interrupts) handling setup.
 120  */
 121 static void __init dec_be_init(void)
 122 {
 123         switch (mips_machtype) {
 124         case MACH_DS23100:      /* DS2100/DS3100 Pmin/Pmax */
 125                 board_be_handler = dec_kn01_be_handler;
 126                 busirq.handler = dec_kn01_be_interrupt;
 127                 busirq.flags |= IRQF_SHARED;
 128                 dec_kn01_be_init();
 129                 break;
 130         case MACH_DS5000_1XX:   /* DS5000/1xx 3min */
 131         case MACH_DS5000_XX:    /* DS5000/xx Maxine */
 132                 board_be_handler = dec_kn02xa_be_handler;
 133                 busirq.handler = dec_kn02xa_be_interrupt;
 134                 dec_kn02xa_be_init();
 135                 break;
 136         case MACH_DS5000_200:   /* DS5000/200 3max */
 137         case MACH_DS5000_2X0:   /* DS5000/240 3max+ */
 138         case MACH_DS5900:       /* DS5900 bigmax */
 139                 board_be_handler = dec_ecc_be_handler;
 140                 busirq.handler = dec_ecc_be_interrupt;
 141                 dec_ecc_be_init();
 142                 break;
 143         }
 144 }
 145
 146
 147 extern void dec_time_init(void);
 148
 149 void __init plat_mem_setup(void)
 150 {
 151         board_be_init = dec_be_init;
 152         board_time_init = dec_time_init;
 153
 154         wbflush_setup();
 155
 156         _machine_restart = dec_machine_restart;
 157         _machine_halt = dec_machine_halt;
 158         pm_power_off = dec_machine_power_off;
 159
 160         ioport_resource.start = ~0UL;
 161         ioport_resource.end = 0UL;
 162 }
 163
 164 /*
 165  * Machine-specific initialisation for KN01, aka DS2100 (aka Pmin)
 166  * or DS3100 (aka Pmax).
 167  */
 168 static int kn01_interrupt[DEC_NR_INTS] __initdata = {
 169         [DEC_IRQ_CASCADE]       = -1,
 170         [DEC_IRQ_AB_RECV]       = -1,
 171         [DEC_IRQ_AB_XMIT]       = -1,
 172         [DEC_IRQ_DZ11]          = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11),
 173         [DEC_IRQ_ASC]           = -1,
 174         [DEC_IRQ_FLOPPY]        = -1,
 175         [DEC_IRQ_FPU]           = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
 176         [DEC_IRQ_HALT]          = -1,
 177         [DEC_IRQ_ISDN]          = -1,
 178         [DEC_IRQ_LANCE]         = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE),
 179         [DEC_IRQ_BUS]           = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS),
 180         [DEC_IRQ_PSU]           = -1,
 181         [DEC_IRQ_RTC]           = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC),
 182         [DEC_IRQ_SCC0]          = -1,
 183         [DEC_IRQ_SCC1]          = -1,
 184         [DEC_IRQ_SII]           = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII),
 185         [DEC_IRQ_TC0]           = -1,
 186         [DEC_IRQ_TC1]           = -1,
 187         [DEC_IRQ_TC2]           = -1,
 188         [DEC_IRQ_TIMER]         = -1,
 189         [DEC_IRQ_VIDEO]         = DEC_CPU_IRQ_NR(KN01_CPU_INR_VIDEO),
 190         [DEC_IRQ_ASC_MERR]      = -1,
 191         [DEC_IRQ_ASC_ERR]       = -1,
 192         [DEC_IRQ_ASC_DMA]       = -1,
 193         [DEC_IRQ_FLOPPY_ERR]    = -1,
 194         [DEC_IRQ_ISDN_ERR]      = -1,
 195         [DEC_IRQ_ISDN_RXDMA]    = -1,
 196         [DEC_IRQ_ISDN_TXDMA]    = -1,
 197         [DEC_IRQ_LANCE_MERR]    = -1,
 198         [DEC_IRQ_SCC0A_RXERR]   = -1,
 199         [DEC_IRQ_SCC0A_RXDMA]   = -1,
 200         [DEC_IRQ_SCC0A_TXERR]   = -1,
 201         [DEC_IRQ_SCC0A_TXDMA]   = -1,
 202         [DEC_IRQ_AB_RXERR]      = -1,
 203         [DEC_IRQ_AB_RXDMA]      = -1,
 204         [DEC_IRQ_AB_TXERR]      = -1,
 205         [DEC_IRQ_AB_TXDMA]      = -1,
 206         [DEC_IRQ_SCC1A_RXERR]   = -1,
 207         [DEC_IRQ_SCC1A_RXDMA]   = -1,
 208         [DEC_IRQ_SCC1A_TXERR]   = -1,
 209         [DEC_IRQ_SCC1A_TXDMA]   = -1,
 210 };
 211
 212 static int_ptr kn01_cpu_mask_nr_tbl[][2] __initdata = {
 213         { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_BUS) },
 214                 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS) } },
 215         { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_RTC) },
 216                 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC) } },
 217         { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_DZ11) },
 218                 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11) } },
 219         { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_SII) },
 220                 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII) } },
 221         { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_LANCE) },
 222                 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE) } },
 223         { { .i = DEC_CPU_IRQ_ALL },
 224                 { .p = cpu_all_int } },
 225 };
 226
 227 static void __init dec_init_kn01(void)
 228 {
 229         /* IRQ routing. */
 230         memcpy(&dec_interrupt, &kn01_interrupt,
 231                 sizeof(kn01_interrupt));
 232
 233         /* CPU IRQ priorities. */
 234         memcpy(&cpu_mask_nr_tbl, &kn01_cpu_mask_nr_tbl,
 235                 sizeof(kn01_cpu_mask_nr_tbl));
 236
 237         mips_cpu_irq_init(DEC_CPU_IRQ_BASE);
 238
 239 }                               /* dec_init_kn01 */
 240
 241
 242 /*
 243  * Machine-specific initialisation for KN230, aka DS5100, aka MIPSmate.
 244  */
 245 static int kn230_interrupt[DEC_NR_INTS] __initdata = {
 246         [DEC_IRQ_CASCADE]       = -1,
 247         [DEC_IRQ_AB_RECV]       = -1,
 248         [DEC_IRQ_AB_XMIT]       = -1,
 249         [DEC_IRQ_DZ11]          = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11),
 250         [DEC_IRQ_ASC]           = -1,
 251         [DEC_IRQ_FLOPPY]        = -1,
 252         [DEC_IRQ_FPU]           = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
 253         [DEC_IRQ_HALT]          = DEC_CPU_IRQ_NR(KN230_CPU_INR_HALT),
 254         [DEC_IRQ_ISDN]          = -1,
 255         [DEC_IRQ_LANCE]         = DEC_CPU_IRQ_NR(KN230_CPU_INR_LANCE),
 256         [DEC_IRQ_BUS]           = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS),
 257         [DEC_IRQ_PSU]           = -1,
 258         [DEC_IRQ_RTC]           = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC),
 259         [DEC_IRQ_SCC0]          = -1,
 260         [DEC_IRQ_SCC1]          = -1,
 261         [DEC_IRQ_SII]           = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII),
 262         [DEC_IRQ_TC0]           = -1,
 263         [DEC_IRQ_TC1]           = -1,
 264         [DEC_IRQ_TC2]           = -1,
 265         [DEC_IRQ_TIMER]         = -1,
 266         [DEC_IRQ_VIDEO]         = -1,
 267         [DEC_IRQ_ASC_MERR]      = -1,
 268         [DEC_IRQ_ASC_ERR]       = -1,
 269         [DEC_IRQ_ASC_DMA]       = -1,
 270         [DEC_IRQ_FLOPPY_ERR]    = -1,
 271         [DEC_IRQ_ISDN_ERR]      = -1,
 272         [DEC_IRQ_ISDN_RXDMA]    = -1,
 273         [DEC_IRQ_ISDN_TXDMA]    = -1,
 274         [DEC_IRQ_LANCE_MERR]    = -1,
 275         [DEC_IRQ_SCC0A_RXERR]   = -1,
 276         [DEC_IRQ_SCC0A_RXDMA]   = -1,
 277         [DEC_IRQ_SCC0A_TXERR]   = -1,
 278         [DEC_IRQ_SCC0A_TXDMA]   = -1,
 279         [DEC_IRQ_AB_RXERR]      = -1,
 280         [DEC_IRQ_AB_RXDMA]      = -1,
 281         [DEC_IRQ_AB_TXERR]      = -1,
 282         [DEC_IRQ_AB_TXDMA]      = -1,
 283         [DEC_IRQ_SCC1A_RXERR]   = -1,
 284         [DEC_IRQ_SCC1A_RXDMA]   = -1,
 285         [DEC_IRQ_SCC1A_TXERR]   = -1,
 286         [DEC_IRQ_SCC1A_TXDMA]   = -1,
 287 };
 288
 289 static int_ptr kn230_cpu_mask_nr_tbl[][2] __initdata = {
 290         { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_BUS) },
 291                 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS) } },
 292         { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_RTC) },
 293                 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC) } },
 294         { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_DZ11) },
 295                 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11) } },
 296         { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_SII) },
 297                 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII) } },
 298         { { .i = DEC_CPU_IRQ_ALL },
 299                 { .p = cpu_all_int } },
 300 };
 301
 302 static void __init dec_init_kn230(void)
 303 {
 304         /* IRQ routing. */
 305         memcpy(&dec_interrupt, &kn230_interrupt,
 306                 sizeof(kn230_interrupt));
 307
 308         /* CPU IRQ priorities. */
 309         memcpy(&cpu_mask_nr_tbl, &kn230_cpu_mask_nr_tbl,
 310                 sizeof(kn230_cpu_mask_nr_tbl));
 311
 312         mips_cpu_irq_init(DEC_CPU_IRQ_BASE);
 313
 314 }                               /* dec_init_kn230 */
 315
 316
 317 /*
 318  * Machine-specific initialisation for KN02, aka DS5000/200, aka 3max.
 319  */
 320 static int kn02_interrupt[DEC_NR_INTS] __initdata = {
 321         [DEC_IRQ_CASCADE]       = DEC_CPU_IRQ_NR(KN02_CPU_INR_CASCADE),
 322         [DEC_IRQ_AB_RECV]       = -1,
 323         [DEC_IRQ_AB_XMIT]       = -1,
 324         [DEC_IRQ_DZ11]          = KN02_IRQ_NR(KN02_CSR_INR_DZ11),
 325         [DEC_IRQ_ASC]           = KN02_IRQ_NR(KN02_CSR_INR_ASC),
 326         [DEC_IRQ_FLOPPY]        = -1,
 327         [DEC_IRQ_FPU]           = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
 328         [DEC_IRQ_HALT]          = -1,
 329         [DEC_IRQ_ISDN]          = -1,
 330         [DEC_IRQ_LANCE]         = KN02_IRQ_NR(KN02_CSR_INR_LANCE),
 331         [DEC_IRQ_BUS]           = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS),
 332         [DEC_IRQ_PSU]           = -1,
 333         [DEC_IRQ_RTC]           = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC),
 334         [DEC_IRQ_SCC0]          = -1,
 335         [DEC_IRQ_SCC1]          = -1,
 336         [DEC_IRQ_SII]           = -1,
 337         [DEC_IRQ_TC0]           = KN02_IRQ_NR(KN02_CSR_INR_TC0),
 338         [DEC_IRQ_TC1]           = KN02_IRQ_NR(KN02_CSR_INR_TC1),
 339         [DEC_IRQ_TC2]           = KN02_IRQ_NR(KN02_CSR_INR_TC2),
 340         [DEC_IRQ_TIMER]         = -1,
 341         [DEC_IRQ_VIDEO]         = -1,
 342         [DEC_IRQ_ASC_MERR]      = -1,
 343         [DEC_IRQ_ASC_ERR]       = -1,
 344         [DEC_IRQ_ASC_DMA]       = -1,
 345         [DEC_IRQ_FLOPPY_ERR]    = -1,
 346         [DEC_IRQ_ISDN_ERR]      = -1,
 347         [DEC_IRQ_ISDN_RXDMA]    = -1,
 348         [DEC_IRQ_ISDN_TXDMA]    = -1,
 349         [DEC_IRQ_LANCE_MERR]    = -1,
 350         [DEC_IRQ_SCC0A_RXERR]   = -1,
 351         [DEC_IRQ_SCC0A_RXDMA]   = -1,
 352         [DEC_IRQ_SCC0A_TXERR]   = -1,
 353         [DEC_IRQ_SCC0A_TXDMA]   = -1,
 354         [DEC_IRQ_AB_RXERR]      = -1,
 355         [DEC_IRQ_AB_RXDMA]      = -1,
 356         [DEC_IRQ_AB_TXERR]      = -1,
 357         [DEC_IRQ_AB_TXDMA]      = -1,
 358         [DEC_IRQ_SCC1A_RXERR]   = -1,
 359         [DEC_IRQ_SCC1A_RXDMA]   = -1,
 360         [DEC_IRQ_SCC1A_TXERR]   = -1,
 361         [DEC_IRQ_SCC1A_TXDMA]   = -1,
 362 };
 363
 364 static int_ptr kn02_cpu_mask_nr_tbl[][2] __initdata = {
 365         { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_BUS) },
 366                 { .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS) } },
 367         { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_RTC) },
 368                 { .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC) } },
 369         { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_CASCADE) },
 370                 { .p = kn02_io_int } },
 371         { { .i = DEC_CPU_IRQ_ALL },
 372                 { .p = cpu_all_int } },
 373 };
 374
 375 static int_ptr kn02_asic_mask_nr_tbl[][2] __initdata = {
 376         { { .i = KN02_IRQ_MASK(KN02_CSR_INR_DZ11) },
 377                 { .i = KN02_IRQ_NR(KN02_CSR_INR_DZ11) } },
 378         { { .i = KN02_IRQ_MASK(KN02_CSR_INR_ASC) },
 379                 { .i = KN02_IRQ_NR(KN02_CSR_INR_ASC) } },
 380         { { .i = KN02_IRQ_MASK(KN02_CSR_INR_LANCE) },
 381                 { .i = KN02_IRQ_NR(KN02_CSR_INR_LANCE) } },
 382         { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC2) },
 383                 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC2) } },
 384         { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC1) },
 385                 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC1) } },
 386         { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC0) },
 387                 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC0) } },
 388         { { .i = KN02_IRQ_ALL },
 389                 { .p = kn02_all_int } },
 390 };
 391
 392 static void __init dec_init_kn02(void)
 393 {
 394         /* IRQ routing. */
 395         memcpy(&dec_interrupt, &kn02_interrupt,
 396                 sizeof(kn02_interrupt));
 397
 398         /* CPU IRQ priorities. */
 399         memcpy(&cpu_mask_nr_tbl, &kn02_cpu_mask_nr_tbl,
 400                 sizeof(kn02_cpu_mask_nr_tbl));
 401
 402         /* KN02 CSR IRQ priorities. */
 403         memcpy(&asic_mask_nr_tbl, &kn02_asic_mask_nr_tbl,
 404                 sizeof(kn02_asic_mask_nr_tbl));
 405
 406         mips_cpu_irq_init(DEC_CPU_IRQ_BASE);
 407         init_kn02_irqs(KN02_IRQ_BASE);
 408
 409 }                               /* dec_init_kn02 */
 410
 411
 412 /*
 413  * Machine-specific initialisation for KN02-BA, aka DS5000/1xx
 414  * (xx = 20, 25, 33), aka 3min.  Also applies to KN04(-BA), aka
 415  * DS5000/150, aka 4min.
 416  */
 417 static int kn02ba_interrupt[DEC_NR_INTS] __initdata = {
 418         [DEC_IRQ_CASCADE]       = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_CASCADE),
 419         [DEC_IRQ_AB_RECV]       = -1,
 420         [DEC_IRQ_AB_XMIT]       = -1,
 421         [DEC_IRQ_DZ11]          = -1,
 422         [DEC_IRQ_ASC]           = IO_IRQ_NR(KN02BA_IO_INR_ASC),
 423         [DEC_IRQ_FLOPPY]        = -1,
 424         [DEC_IRQ_FPU]           = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
 425         [DEC_IRQ_HALT]          = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_HALT),
 426         [DEC_IRQ_ISDN]          = -1,
 427         [DEC_IRQ_LANCE]         = IO_IRQ_NR(KN02BA_IO_INR_LANCE),
 428         [DEC_IRQ_BUS]           = IO_IRQ_NR(KN02BA_IO_INR_BUS),
 429         [DEC_IRQ_PSU]           = IO_IRQ_NR(KN02BA_IO_INR_PSU),
 430         [DEC_IRQ_RTC]           = IO_IRQ_NR(KN02BA_IO_INR_RTC),
 431         [DEC_IRQ_SCC0]          = IO_IRQ_NR(KN02BA_IO_INR_SCC0),
 432         [DEC_IRQ_SCC1]          = IO_IRQ_NR(KN02BA_IO_INR_SCC1),
 433         [DEC_IRQ_SII]           = -1,
 434         [DEC_IRQ_TC0]           = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0),
 435         [DEC_IRQ_TC1]           = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1),
 436         [DEC_IRQ_TC2]           = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2),
 437         [DEC_IRQ_TIMER]         = -1,
 438         [DEC_IRQ_VIDEO]         = -1,
 439         [DEC_IRQ_ASC_MERR]      = IO_IRQ_NR(IO_INR_ASC_MERR),
 440         [DEC_IRQ_ASC_ERR]       = IO_IRQ_NR(IO_INR_ASC_ERR),
 441         [DEC_IRQ_ASC_DMA]       = IO_IRQ_NR(IO_INR_ASC_DMA),
 442         [DEC_IRQ_FLOPPY_ERR]    = -1,
 443         [DEC_IRQ_ISDN_ERR]      = -1,
 444         [DEC_IRQ_ISDN_RXDMA]    = -1,
 445         [DEC_IRQ_ISDN_TXDMA]    = -1,
 446         [DEC_IRQ_LANCE_MERR]    = IO_IRQ_NR(IO_INR_LANCE_MERR),
 447         [DEC_IRQ_SCC0A_RXERR]   = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
 448         [DEC_IRQ_SCC0A_RXDMA]   = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
 449         [DEC_IRQ_SCC0A_TXERR]   = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
 450         [DEC_IRQ_SCC0A_TXDMA]   = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
 451         [DEC_IRQ_AB_RXERR]      = -1,
 452         [DEC_IRQ_AB_RXDMA]      = -1,
 453         [DEC_IRQ_AB_TXERR]      = -1,
 454         [DEC_IRQ_AB_TXDMA]      = -1,
 455         [DEC_IRQ_SCC1A_RXERR]   = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
 456         [DEC_IRQ_SCC1A_RXDMA]   = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
 457         [DEC_IRQ_SCC1A_TXERR]   = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
 458         [DEC_IRQ_SCC1A_TXDMA]   = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
 459 };
 460
 461 static int_ptr kn02ba_cpu_mask_nr_tbl[][2] __initdata = {
 462         { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_CASCADE) },
 463                 { .p = kn02xa_io_int } },
 464         { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC2) },
 465                 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2) } },
 466         { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC1) },
 467                 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1) } },
 468         { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC0) },
 469                 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0) } },
 470         { { .i = DEC_CPU_IRQ_ALL },
 471                 { .p = cpu_all_int } },
 472 };
 473
 474 static int_ptr kn02ba_asic_mask_nr_tbl[][2] __initdata = {
 475         { { .i = IO_IRQ_MASK(KN02BA_IO_INR_BUS) },
 476                 { .i = IO_IRQ_NR(KN02BA_IO_INR_BUS) } },
 477         { { .i = IO_IRQ_MASK(KN02BA_IO_INR_RTC) },
 478                 { .i = IO_IRQ_NR(KN02BA_IO_INR_RTC) } },
 479         { { .i = IO_IRQ_DMA },
 480                 { .p = asic_dma_int } },
 481         { { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC0) },
 482                 { .i = IO_IRQ_NR(KN02BA_IO_INR_SCC0) } },
 483         { { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC1) },
 484                 { .i = IO_IRQ_NR(KN02BA_IO_INR_SCC1) } },
 485         { { .i = IO_IRQ_MASK(KN02BA_IO_INR_ASC) },
 486                 { .i = IO_IRQ_NR(KN02BA_IO_INR_ASC) } },
 487         { { .i = IO_IRQ_MASK(KN02BA_IO_INR_LANCE) },
 488                 { .i = IO_IRQ_NR(KN02BA_IO_INR_LANCE) } },
 489         { { .i = IO_IRQ_ALL },
 490                 { .p = asic_all_int } },
 491 };
 492
 493 static void __init dec_init_kn02ba(void)
 494 {
 495         /* IRQ routing. */
 496         memcpy(&dec_interrupt, &kn02ba_interrupt,
 497                 sizeof(kn02ba_interrupt));
 498
 499         /* CPU IRQ priorities. */
 500         memcpy(&cpu_mask_nr_tbl, &kn02ba_cpu_mask_nr_tbl,
 501                 sizeof(kn02ba_cpu_mask_nr_tbl));
 502
 503         /* I/O ASIC IRQ priorities. */
 504         memcpy(&asic_mask_nr_tbl, &kn02ba_asic_mask_nr_tbl,
 505                 sizeof(kn02ba_asic_mask_nr_tbl));
 506
 507         mips_cpu_irq_init(DEC_CPU_IRQ_BASE);
 508         init_ioasic_irqs(IO_IRQ_BASE);
 509
 510 }                               /* dec_init_kn02ba */
 511
 512
 513 /*
 514  * Machine-specific initialisation for KN02-CA, aka DS5000/xx,
 515  * (xx = 20, 25, 33), aka MAXine.  Also applies to KN04(-CA), aka
 516  * DS5000/50, aka 4MAXine.
 517  */
 518 static int kn02ca_interrupt[DEC_NR_INTS] __initdata = {
 519         [DEC_IRQ_CASCADE]       = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_CASCADE),
 520         [DEC_IRQ_AB_RECV]       = IO_IRQ_NR(KN02CA_IO_INR_AB_RECV),
 521         [DEC_IRQ_AB_XMIT]       = IO_IRQ_NR(KN02CA_IO_INR_AB_XMIT),
 522         [DEC_IRQ_DZ11]          = -1,
 523         [DEC_IRQ_ASC]           = IO_IRQ_NR(KN02CA_IO_INR_ASC),
 524         [DEC_IRQ_FLOPPY]        = IO_IRQ_NR(KN02CA_IO_INR_FLOPPY),
 525         [DEC_IRQ_FPU]           = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
 526         [DEC_IRQ_HALT]          = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_HALT),
 527         [DEC_IRQ_ISDN]          = IO_IRQ_NR(KN02CA_IO_INR_ISDN),
 528         [DEC_IRQ_LANCE]         = IO_IRQ_NR(KN02CA_IO_INR_LANCE),
 529         [DEC_IRQ_BUS]           = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS),
 530         [DEC_IRQ_PSU]           = -1,
 531         [DEC_IRQ_RTC]           = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC),
 532         [DEC_IRQ_SCC0]          = IO_IRQ_NR(KN02CA_IO_INR_SCC0),
 533         [DEC_IRQ_SCC1]          = -1,
 534         [DEC_IRQ_SII]           = -1,
 535         [DEC_IRQ_TC0]           = IO_IRQ_NR(KN02CA_IO_INR_TC0),
 536         [DEC_IRQ_TC1]           = IO_IRQ_NR(KN02CA_IO_INR_TC1),
 537         [DEC_IRQ_TC2]           = -1,
 538         [DEC_IRQ_TIMER]         = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_TIMER),
 539         [DEC_IRQ_VIDEO]         = IO_IRQ_NR(KN02CA_IO_INR_VIDEO),
 540         [DEC_IRQ_ASC_MERR]      = IO_IRQ_NR(IO_INR_ASC_MERR),
 541         [DEC_IRQ_ASC_ERR]       = IO_IRQ_NR(IO_INR_ASC_ERR),
 542         [DEC_IRQ_ASC_DMA]       = IO_IRQ_NR(IO_INR_ASC_DMA),
 543         [DEC_IRQ_FLOPPY_ERR]    = IO_IRQ_NR(IO_INR_FLOPPY_ERR),
 544         [DEC_IRQ_ISDN_ERR]      = IO_IRQ_NR(IO_INR_ISDN_ERR),
 545         [DEC_IRQ_ISDN_RXDMA]    = IO_IRQ_NR(IO_INR_ISDN_RXDMA),
 546         [DEC_IRQ_ISDN_TXDMA]    = IO_IRQ_NR(IO_INR_ISDN_TXDMA),
 547         [DEC_IRQ_LANCE_MERR]    = IO_IRQ_NR(IO_INR_LANCE_MERR),
 548         [DEC_IRQ_SCC0A_RXERR]   = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
 549         [DEC_IRQ_SCC0A_RXDMA]   = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
 550         [DEC_IRQ_SCC0A_TXERR]   = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
 551         [DEC_IRQ_SCC0A_TXDMA]   = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
 552         [DEC_IRQ_AB_RXERR]      = IO_IRQ_NR(IO_INR_AB_RXERR),
 553         [DEC_IRQ_AB_RXDMA]      = IO_IRQ_NR(IO_INR_AB_RXDMA),
 554         [DEC_IRQ_AB_TXERR]      = IO_IRQ_NR(IO_INR_AB_TXERR),
 555         [DEC_IRQ_AB_TXDMA]      = IO_IRQ_NR(IO_INR_AB_TXDMA),
 556         [DEC_IRQ_SCC1A_RXERR]   = -1,
 557         [DEC_IRQ_SCC1A_RXDMA]   = -1,
 558         [DEC_IRQ_SCC1A_TXERR]   = -1,
 559         [DEC_IRQ_SCC1A_TXDMA]   = -1,
 560 };
 561
 562 static int_ptr kn02ca_cpu_mask_nr_tbl[][2] __initdata = {
 563         { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_BUS) },
 564                 { .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS) } },
 565         { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_RTC) },
 566                 { .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC) } },
 567         { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_CASCADE) },
 568                 { .p = kn02xa_io_int } },
 569         { { .i = DEC_CPU_IRQ_ALL },
 570                 { .p = cpu_all_int } },
 571 };
 572
 573 static int_ptr kn02ca_asic_mask_nr_tbl[][2] __initdata = {
 574         { { .i = IO_IRQ_DMA },
 575                 { .p = asic_dma_int } },
 576         { { .i = IO_IRQ_MASK(KN02CA_IO_INR_SCC0) },
 577                 { .i = IO_IRQ_NR(KN02CA_IO_INR_SCC0) } },
 578         { { .i = IO_IRQ_MASK(KN02CA_IO_INR_ASC) },
 579                 { .i = IO_IRQ_NR(KN02CA_IO_INR_ASC) } },
 580         { { .i = IO_IRQ_MASK(KN02CA_IO_INR_LANCE) },
 581                 { .i = IO_IRQ_NR(KN02CA_IO_INR_LANCE) } },
 582         { { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC1) },
 583                 { .i = IO_IRQ_NR(KN02CA_IO_INR_TC1) } },
 584         { { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC0) },
 585                 { .i = IO_IRQ_NR(KN02CA_IO_INR_TC0) } },
 586         { { .i = IO_IRQ_ALL },
 587                 { .p = asic_all_int } },
 588 };
 589
 590 static void __init dec_init_kn02ca(void)
 591 {
 592         /* IRQ routing. */
 593         memcpy(&dec_interrupt, &kn02ca_interrupt,
 594                 sizeof(kn02ca_interrupt));
 595
 596         /* CPU IRQ priorities. */
 597         memcpy(&cpu_mask_nr_tbl, &kn02ca_cpu_mask_nr_tbl,
 598                 sizeof(kn02ca_cpu_mask_nr_tbl));
 599
 600         /* I/O ASIC IRQ priorities. */
 601         memcpy(&asic_mask_nr_tbl, &kn02ca_asic_mask_nr_tbl,
 602                 sizeof(kn02ca_asic_mask_nr_tbl));
 603
 604         mips_cpu_irq_init(DEC_CPU_IRQ_BASE);
 605         init_ioasic_irqs(IO_IRQ_BASE);
 606
 607 }                               /* dec_init_kn02ca */
 608
 609
 610 /*
 611  * Machine-specific initialisation for KN03, aka DS5000/240,
 612  * aka 3max+ and DS5900, aka BIGmax.  Also applies to KN05, aka
 613  * DS5000/260, aka 4max+ and DS5900/260.
 614  */
 615 static int kn03_interrupt[DEC_NR_INTS] __initdata = {
 616         [DEC_IRQ_CASCADE]       = DEC_CPU_IRQ_NR(KN03_CPU_INR_CASCADE),
 617         [DEC_IRQ_AB_RECV]       = -1,
 618         [DEC_IRQ_AB_XMIT]       = -1,
 619         [DEC_IRQ_DZ11]          = -1,
 620         [DEC_IRQ_ASC]           = IO_IRQ_NR(KN03_IO_INR_ASC),
 621         [DEC_IRQ_FLOPPY]        = -1,
 622         [DEC_IRQ_FPU]           = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
 623         [DEC_IRQ_HALT]          = DEC_CPU_IRQ_NR(KN03_CPU_INR_HALT),
 624         [DEC_IRQ_ISDN]          = -1,
 625         [DEC_IRQ_LANCE]         = IO_IRQ_NR(KN03_IO_INR_LANCE),
 626         [DEC_IRQ_BUS]           = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS),
 627         [DEC_IRQ_PSU]           = IO_IRQ_NR(KN03_IO_INR_PSU),
 628         [DEC_IRQ_RTC]           = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC),
 629         [DEC_IRQ_SCC0]          = IO_IRQ_NR(KN03_IO_INR_SCC0),
 630         [DEC_IRQ_SCC1]          = IO_IRQ_NR(KN03_IO_INR_SCC1),
 631         [DEC_IRQ_SII]           = -1,
 632         [DEC_IRQ_TC0]           = IO_IRQ_NR(KN03_IO_INR_TC0),
 633         [DEC_IRQ_TC1]           = IO_IRQ_NR(KN03_IO_INR_TC1),
 634         [DEC_IRQ_TC2]           = IO_IRQ_NR(KN03_IO_INR_TC2),
 635         [DEC_IRQ_TIMER]         = -1,
 636         [DEC_IRQ_VIDEO]         = -1,
 637         [DEC_IRQ_ASC_MERR]      = IO_IRQ_NR(IO_INR_ASC_MERR),
 638         [DEC_IRQ_ASC_ERR]       = IO_IRQ_NR(IO_INR_ASC_ERR),
 639         [DEC_IRQ_ASC_DMA]       = IO_IRQ_NR(IO_INR_ASC_DMA),
 640         [DEC_IRQ_FLOPPY_ERR]    = -1,
 641         [DEC_IRQ_ISDN_ERR]      = -1,
 642         [DEC_IRQ_ISDN_RXDMA]    = -1,
 643         [DEC_IRQ_ISDN_TXDMA]    = -1,
 644         [DEC_IRQ_LANCE_MERR]    = IO_IRQ_NR(IO_INR_LANCE_MERR),
 645         [DEC_IRQ_SCC0A_RXERR]   = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
 646         [DEC_IRQ_SCC0A_RXDMA]   = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
 647         [DEC_IRQ_SCC0A_TXERR]   = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
 648         [DEC_IRQ_SCC0A_TXDMA]   = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
 649         [DEC_IRQ_AB_RXERR]      = -1,
 650         [DEC_IRQ_AB_RXDMA]      = -1,
 651         [DEC_IRQ_AB_TXERR]      = -1,
 652         [DEC_IRQ_AB_TXDMA]      = -1,
 653         [DEC_IRQ_SCC1A_RXERR]   = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
 654         [DEC_IRQ_SCC1A_RXDMA]   = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
 655         [DEC_IRQ_SCC1A_TXERR]   = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
 656         [DEC_IRQ_SCC1A_TXDMA]   = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
 657 };
 658
 659 static int_ptr kn03_cpu_mask_nr_tbl[][2] __initdata = {
 660         { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_BUS) },
 661                 { .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS) } },
 662         { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_RTC) },
 663                 { .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC) } },
 664         { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_CASCADE) },
 665                 { .p = kn03_io_int } },
 666         { { .i = DEC_CPU_IRQ_ALL },
 667                 { .p = cpu_all_int } },
 668 };
 669
 670 static int_ptr kn03_asic_mask_nr_tbl[][2] __initdata = {
 671         { { .i = IO_IRQ_DMA },
 672                 { .p = asic_dma_int } },
 673         { { .i = IO_IRQ_MASK(KN03_IO_INR_SCC0) },
 674                 { .i = IO_IRQ_NR(KN03_IO_INR_SCC0) } },
 675         { { .i = IO_IRQ_MASK(KN03_IO_INR_SCC1) },
 676                 { .i = IO_IRQ_NR(KN03_IO_INR_SCC1) } },
 677         { { .i = IO_IRQ_MASK(KN03_IO_INR_ASC) },
 678                 { .i = IO_IRQ_NR(KN03_IO_INR_ASC) } },
 679         { { .i = IO_IRQ_MASK(KN03_IO_INR_LANCE) },
 680                 { .i = IO_IRQ_NR(KN03_IO_INR_LANCE) } },
 681         { { .i = IO_IRQ_MASK(KN03_IO_INR_TC2) },
 682                 { .i = IO_IRQ_NR(KN03_IO_INR_TC2) } },
 683         { { .i = IO_IRQ_MASK(KN03_IO_INR_TC1) },
 684                 { .i = IO_IRQ_NR(KN03_IO_INR_TC1) } },
 685         { { .i = IO_IRQ_MASK(KN03_IO_INR_TC0) },
 686                 { .i = IO_IRQ_NR(KN03_IO_INR_TC0) } },
 687         { { .i = IO_IRQ_ALL },
 688                 { .p = asic_all_int } },
 689 };
 690
 691 static void __init dec_init_kn03(void)
 692 {
 693         /* IRQ routing. */
 694         memcpy(&dec_interrupt, &kn03_interrupt,
 695                 sizeof(kn03_interrupt));
 696
 697         /* CPU IRQ priorities. */
 698         memcpy(&cpu_mask_nr_tbl, &kn03_cpu_mask_nr_tbl,
 699                 sizeof(kn03_cpu_mask_nr_tbl));
 700
 701         /* I/O ASIC IRQ priorities. */
 702         memcpy(&asic_mask_nr_tbl, &kn03_asic_mask_nr_tbl,
 703                 sizeof(kn03_asic_mask_nr_tbl));
 704
 705         mips_cpu_irq_init(DEC_CPU_IRQ_BASE);
 706         init_ioasic_irqs(IO_IRQ_BASE);
 707
 708 }                               /* dec_init_kn03 */
 709
 710
 711 void __init arch_init_irq(void)
 712 {
 713         switch (mips_machtype) {
 714         case MACH_DS23100:      /* DS2100/DS3100 Pmin/Pmax */
 715                 dec_init_kn01();
 716                 break;
 717         case MACH_DS5100:       /* DS5100 MIPSmate */
 718                 dec_init_kn230();
 719                 break;
 720         case MACH_DS5000_200:   /* DS5000/200 3max */
 721                 dec_init_kn02();
 722                 break;
 723         case MACH_DS5000_1XX:   /* DS5000/1xx 3min */
 724                 dec_init_kn02ba();
 725                 break;
 726         case MACH_DS5000_2X0:   /* DS5000/240 3max+ */
 727         case MACH_DS5900:       /* DS5900 bigmax */
 728                 dec_init_kn03();
 729                 break;
 730         case MACH_DS5000_XX:    /* Personal DS5000/xx */
 731                 dec_init_kn02ca();
 732                 break;
 733         case MACH_DS5800:       /* DS5800 Isis */
 734                 panic("Don't know how to set this up!");
 735                 break;
 736         case MACH_DS5400:       /* DS5400 MIPSfair */
 737                 panic("Don't know how to set this up!");
 738                 break;
 739         case MACH_DS5500:       /* DS5500 MIPSfair-2 */
 740                 panic("Don't know how to set this up!");
 741                 break;
 742         }
 743
 744         /* Free the FPU interrupt if the exception is present. */
 745         if (!cpu_has_nofpuex) {
 746                 cpu_fpu_mask = 0;
 747                 dec_interrupt[DEC_IRQ_FPU] = -1;
 748         }
 749
 750         /* Register board interrupts: FPU and cascade. */
 751         if (dec_interrupt[DEC_IRQ_FPU] >= 0)
 752                 setup_irq(dec_interrupt[DEC_IRQ_FPU], &fpuirq);
 753         if (dec_interrupt[DEC_IRQ_CASCADE] >= 0)
 754                 setup_irq(dec_interrupt[DEC_IRQ_CASCADE], &ioirq);
 755
 756         /* Register the bus error interrupt. */
 757         if (dec_interrupt[DEC_IRQ_BUS] >= 0 && busirq.handler)
 758                 setup_irq(dec_interrupt[DEC_IRQ_BUS], &busirq);
 759
 760         /* Register the HALT interrupt. */
 761         if (dec_interrupt[DEC_IRQ_HALT] >= 0)
 762                 setup_irq(dec_interrupt[DEC_IRQ_HALT], &haltirq);
 763 }
 764
 765 asmlinkage unsigned int dec_irq_dispatch(unsigned int irq)
 766 {
 767         do_IRQ(irq);
 768         return 0;
 769 }