arch/alpha/kernel/sys_sable.c

   1 /*
   2  *      linux/arch/alpha/kernel/sys_sable.c
   3  *
   4  *      Copyright (C) 1995 David A Rusling
   5  *      Copyright (C) 1996 Jay A Estabrook
   6  *      Copyright (C) 1998, 1999 Richard Henderson
   7  *
   8  * Code supporting the Sable, Sable-Gamma, and Lynx systems.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/types.h>
  13 #include <linux/mm.h>
  14 #include <linux/sched.h>
  15 #include <linux/pci.h>
  16 #include <linux/init.h>
  17
  18 #include <asm/ptrace.h>
  19 #include <asm/system.h>
  20 #include <asm/dma.h>
  21 #include <asm/irq.h>
  22 #include <asm/mmu_context.h>
  23 #include <asm/io.h>
  24 #include <asm/pgtable.h>
  25 #include <asm/core_t2.h>
  26 #include <asm/tlbflush.h>
  27
  28 #include "proto.h"
  29 #include "irq_impl.h"
  30 #include "pci_impl.h"
  31 #include "machvec_impl.h"
  32
  33 DEFINE_SPINLOCK(sable_lynx_irq_lock);
  34
  35 typedef struct irq_swizzle_struct
  36 {
  37         char irq_to_mask[64];
  38         char mask_to_irq[64];
  39
  40         /* Note mask bit is true for DISABLED irqs.  */
  41         unsigned long shadow_mask;
  42
  43         void (*update_irq_hw)(unsigned long bit, unsigned long mask);
  44         void (*ack_irq_hw)(unsigned long bit);
  45
  46 } irq_swizzle_t;
  47
  48 static irq_swizzle_t *sable_lynx_irq_swizzle;
  49
  50 static void sable_lynx_init_irq(int nr_of_irqs);
  51
  52 #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SABLE)
  53
  54 /***********************************************************************/
  55 /*
  56  *   For SABLE, which is really baroque, we manage 40 IRQ's, but the
  57  *   hardware really only supports 24, not via normal ISA PIC,
  58  *   but cascaded custom 8259's, etc.
  59  *       0-7  (char at 536)
  60  *       8-15 (char at 53a)
  61  *      16-23 (char at 53c)
  62  *
  63  * Summary Registers (536/53a/53c):
  64  *
  65  * Bit      Meaning               Kernel IRQ
  66  *------------------------------------------
  67  * 0        PCI slot 0                  34
  68  * 1        NCR810 (builtin)            33
  69  * 2        TULIP (builtin)             32
  70  * 3        mouse                       12
  71  * 4        PCI slot 1                  35
  72  * 5        PCI slot 2                  36
  73  * 6        keyboard                    1
  74  * 7        floppy                      6
  75  * 8        COM2                        3
  76  * 9        parallel port               7
  77  *10        EISA irq 3                  -
  78  *11        EISA irq 4                  -
  79  *12        EISA irq 5                  5
  80  *13        EISA irq 6                  -
  81  *14        EISA irq 7                  -
  82  *15        COM1                        4
  83  *16        EISA irq 9                  9
  84  *17        EISA irq 10                 10
  85  *18        EISA irq 11                 11
  86  *19        EISA irq 12                 -
  87  *20        EISA irq 13                 -
  88  *21        EISA irq 14                 14
  89  *22        NC                          15
  90  *23        IIC                         -
  91  */
  92
  93 static void
  94 sable_update_irq_hw(unsigned long bit, unsigned long mask)
  95 {
  96         int port = 0x537;
  97
  98         if (bit >= 16) {
  99                 port = 0x53d;
 100                 mask >>= 16;
 101         } else if (bit >= 8) {
 102                 port = 0x53b;
 103                 mask >>= 8;
 104         }
 105
 106         outb(mask, port);
 107 }
 108
 109 static void
 110 sable_ack_irq_hw(unsigned long bit)
 111 {
 112         int port, val1, val2;
 113
 114         if (bit >= 16) {
 115                 port = 0x53c;
 116                 val1 = 0xE0 | (bit - 16);
 117                 val2 = 0xE0 | 4;
 118         } else if (bit >= 8) {
 119                 port = 0x53a;
 120                 val1 = 0xE0 | (bit - 8);
 121                 val2 = 0xE0 | 3;
 122         } else {
 123                 port = 0x536;
 124                 val1 = 0xE0 | (bit - 0);
 125                 val2 = 0xE0 | 1;
 126         }
 127
 128         outb(val1, port);       /* ack the slave */
 129         outb(val2, 0x534);      /* ack the master */
 130 }
 131
 132 static irq_swizzle_t sable_irq_swizzle = {
 133         {
 134                 -1,  6, -1,  8, 15, 12,  7,  9, /* pseudo PIC  0-7  */
 135                 -1, 16, 17, 18,  3, -1, 21, 22, /* pseudo PIC  8-15 */
 136                 -1, -1, -1, -1, -1, -1, -1, -1, /* pseudo EISA 0-7  */
 137                 -1, -1, -1, -1, -1, -1, -1, -1, /* pseudo EISA 8-15  */
 138                  2,  1,  0,  4,  5, -1, -1, -1, /* pseudo PCI */
 139                 -1, -1, -1, -1, -1, -1, -1, -1, /*  */
 140                 -1, -1, -1, -1, -1, -1, -1, -1, /*  */
 141                 -1, -1, -1, -1, -1, -1, -1, -1  /*  */
 142         },
 143         {
 144                 34, 33, 32, 12, 35, 36,  1,  6, /* mask 0-7  */
 145                  3,  7, -1, -1,  5, -1, -1,  4, /* mask 8-15  */
 146                  9, 10, 11, -1, -1, 14, 15, -1, /* mask 16-23  */
 147                 -1, -1, -1, -1, -1, -1, -1, -1, /*  */
 148                 -1, -1, -1, -1, -1, -1, -1, -1, /*  */
 149                 -1, -1, -1, -1, -1, -1, -1, -1, /*  */
 150                 -1, -1, -1, -1, -1, -1, -1, -1, /*  */
 151                 -1, -1, -1, -1, -1, -1, -1, -1  /*  */
 152         },
 153         -1,
 154         sable_update_irq_hw,
 155         sable_ack_irq_hw
 156 };
 157
 158 static void __init
 159 sable_init_irq(void)
 160 {
 161         outb(-1, 0x537);        /* slave 0 */
 162         outb(-1, 0x53b);        /* slave 1 */
 163         outb(-1, 0x53d);        /* slave 2 */
 164         outb(0x44, 0x535);      /* enable cascades in master */
 165
 166         sable_lynx_irq_swizzle = &sable_irq_swizzle;
 167         sable_lynx_init_irq(40);
 168 }
 169
 170 /*
 171  * PCI Fixup configuration for ALPHA SABLE (2100).
 172  *
 173  * The device to slot mapping looks like:
 174  *
 175  * Slot     Device
 176  *  0       TULIP
 177  *  1       SCSI
 178  *  2       PCI-EISA bridge
 179  *  3       none
 180  *  4       none
 181  *  5       none
 182  *  6       PCI on board slot 0
 183  *  7       PCI on board slot 1
 184  *  8       PCI on board slot 2
 185  *
 186  *
 187  * This two layered interrupt approach means that we allocate IRQ 16 and
 188  * above for PCI interrupts.  The IRQ relates to which bit the interrupt
 189  * comes in on.  This makes interrupt processing much easier.
 190  */
 191 /*
 192  * NOTE: the IRQ assignments below are arbitrary, but need to be consistent
 193  * with the values in the irq swizzling tables above.
 194  */
 195
 196 static int __init
 197 sable_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 198 {
 199         static char irq_tab[9][5] __initdata = {
 200                 /*INT    INTA   INTB   INTC   INTD */
 201                 { 32+0,  32+0,  32+0,  32+0,  32+0},  /* IdSel 0,  TULIP  */
 202                 { 32+1,  32+1,  32+1,  32+1,  32+1},  /* IdSel 1,  SCSI   */
 203                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 2,  SIO   */
 204                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 3,  none   */
 205                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 4,  none   */
 206                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 5,  none   */
 207                 { 32+2,  32+2,  32+2,  32+2,  32+2},  /* IdSel 6,  slot 0 */
 208                 { 32+3,  32+3,  32+3,  32+3,  32+3},  /* IdSel 7,  slot 1 */
 209                 { 32+4,  32+4,  32+4,  32+4,  32+4}   /* IdSel 8,  slot 2 */
 210         };
 211         long min_idsel = 0, max_idsel = 8, irqs_per_slot = 5;
 212         return COMMON_TABLE_LOOKUP;
 213 }
 214 #endif /* defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SABLE) */
 215
 216 #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX)
 217
 218 /***********************************************************************/
 219 /* LYNX hardware specifics
 220  */
 221 /*
 222  *   For LYNX, which is also baroque, we manage 64 IRQs, via a custom IC.
 223  *
 224  * Bit      Meaning               Kernel IRQ
 225  *------------------------------------------
 226  * 0
 227  * 1
 228  * 2
 229  * 3        mouse                       12
 230  * 4
 231  * 5
 232  * 6        keyboard                    1
 233  * 7        floppy                      6
 234  * 8        COM2                        3
 235  * 9        parallel port               7
 236  *10        EISA irq 3                  -
 237  *11        EISA irq 4                  -
 238  *12        EISA irq 5                  5
 239  *13        EISA irq 6                  -
 240  *14        EISA irq 7                  -
 241  *15        COM1                        4
 242  *16        EISA irq 9                  9
 243  *17        EISA irq 10                 10
 244  *18        EISA irq 11                 11
 245  *19        EISA irq 12                 -
 246  *20
 247  *21        EISA irq 14                 14
 248  *22        EISA irq 15                 15
 249  *23        IIC                         -
 250  *24        VGA (builtin)               -
 251  *25
 252  *26
 253  *27
 254  *28        NCR810 (builtin)            28
 255  *29
 256  *30
 257  *31
 258  *32        PCI 0 slot 4 A primary bus  32
 259  *33        PCI 0 slot 4 B primary bus  33
 260  *34        PCI 0 slot 4 C primary bus  34
 261  *35        PCI 0 slot 4 D primary bus
 262  *36        PCI 0 slot 5 A primary bus
 263  *37        PCI 0 slot 5 B primary bus
 264  *38        PCI 0 slot 5 C primary bus
 265  *39        PCI 0 slot 5 D primary bus
 266  *40        PCI 0 slot 6 A primary bus
 267  *41        PCI 0 slot 6 B primary bus
 268  *42        PCI 0 slot 6 C primary bus
 269  *43        PCI 0 slot 6 D primary bus
 270  *44        PCI 0 slot 7 A primary bus
 271  *45        PCI 0 slot 7 B primary bus
 272  *46        PCI 0 slot 7 C primary bus
 273  *47        PCI 0 slot 7 D primary bus
 274  *48        PCI 0 slot 0 A secondary bus
 275  *49        PCI 0 slot 0 B secondary bus
 276  *50        PCI 0 slot 0 C secondary bus
 277  *51        PCI 0 slot 0 D secondary bus
 278  *52        PCI 0 slot 1 A secondary bus
 279  *53        PCI 0 slot 1 B secondary bus
 280  *54        PCI 0 slot 1 C secondary bus
 281  *55        PCI 0 slot 1 D secondary bus
 282  *56        PCI 0 slot 2 A secondary bus
 283  *57        PCI 0 slot 2 B secondary bus
 284  *58        PCI 0 slot 2 C secondary bus
 285  *59        PCI 0 slot 2 D secondary bus
 286  *60        PCI 0 slot 3 A secondary bus
 287  *61        PCI 0 slot 3 B secondary bus
 288  *62        PCI 0 slot 3 C secondary bus
 289  *63        PCI 0 slot 3 D secondary bus
 290  */
 291
 292 static void
 293 lynx_update_irq_hw(unsigned long bit, unsigned long mask)
 294 {
 295         /*
 296          * Write the AIR register on the T3/T4 with the
 297          * address of the IC mask register (offset 0x40)
 298          */
 299         *(vulp)T2_AIR = 0x40;
 300         mb();
 301         *(vulp)T2_AIR; /* re-read to force write */
 302         mb();
 303         *(vulp)T2_DIR = mask;
 304         mb();
 305         mb();
 306 }
 307
 308 static void
 309 lynx_ack_irq_hw(unsigned long bit)
 310 {
 311         *(vulp)T2_VAR = (u_long) bit;
 312         mb();
 313         mb();
 314 }
 315
 316 static irq_swizzle_t lynx_irq_swizzle = {
 317         { /* irq_to_mask */
 318                 -1,  6, -1,  8, 15, 12,  7,  9, /* pseudo PIC  0-7  */
 319                 -1, 16, 17, 18,  3, -1, 21, 22, /* pseudo PIC  8-15 */
 320                 -1, -1, -1, -1, -1, -1, -1, -1, /* pseudo */
 321                 -1, -1, -1, -1, 28, -1, -1, -1, /* pseudo */
 322                 32, 33, 34, 35, 36, 37, 38, 39, /* mask 32-39 */
 323                 40, 41, 42, 43, 44, 45, 46, 47, /* mask 40-47 */
 324                 48, 49, 50, 51, 52, 53, 54, 55, /* mask 48-55 */
 325                 56, 57, 58, 59, 60, 61, 62, 63  /* mask 56-63 */
 326         },
 327         { /* mask_to_irq */
 328                 -1, -1, -1, 12, -1, -1,  1,  6, /* mask 0-7   */
 329                  3,  7, -1, -1,  5, -1, -1,  4, /* mask 8-15  */
 330                  9, 10, 11, -1, -1, 14, 15, -1, /* mask 16-23 */
 331                 -1, -1, -1, -1, 28, -1, -1, -1, /* mask 24-31 */
 332                 32, 33, 34, 35, 36, 37, 38, 39, /* mask 32-39 */
 333                 40, 41, 42, 43, 44, 45, 46, 47, /* mask 40-47 */
 334                 48, 49, 50, 51, 52, 53, 54, 55, /* mask 48-55 */
 335                 56, 57, 58, 59, 60, 61, 62, 63  /* mask 56-63 */
 336         },
 337         -1,
 338         lynx_update_irq_hw,
 339         lynx_ack_irq_hw
 340 };
 341
 342 static void __init
 343 lynx_init_irq(void)
 344 {
 345         sable_lynx_irq_swizzle = &lynx_irq_swizzle;
 346         sable_lynx_init_irq(64);
 347 }
 348
 349 /*
 350  * PCI Fixup configuration for ALPHA LYNX (2100A)
 351  *
 352  * The device to slot mapping looks like:
 353  *
 354  * Slot     Device
 355  *  0       none
 356  *  1       none
 357  *  2       PCI-EISA bridge
 358  *  3       PCI-PCI bridge
 359  *  4       NCR 810 (Demi-Lynx only)
 360  *  5       none
 361  *  6       PCI on board slot 4
 362  *  7       PCI on board slot 5
 363  *  8       PCI on board slot 6
 364  *  9       PCI on board slot 7
 365  *
 366  * And behind the PPB we have:
 367  *
 368  * 11       PCI on board slot 0
 369  * 12       PCI on board slot 1
 370  * 13       PCI on board slot 2
 371  * 14       PCI on board slot 3
 372  */
 373 /*
 374  * NOTE: the IRQ assignments below are arbitrary, but need to be consistent
 375  * with the values in the irq swizzling tables above.
 376  */
 377
 378 static int __init
 379 lynx_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 380 {
 381         static char irq_tab[19][5] __initdata = {
 382                 /*INT    INTA   INTB   INTC   INTD */
 383                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 13,  PCEB   */
 384                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 14,  PPB    */
 385                 {   28,    28,    28,    28,    28},  /* IdSel 15,  NCR demi */
 386                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 16,  none   */
 387                 {   32,    32,    33,    34,    35},  /* IdSel 17,  slot 4 */
 388                 {   36,    36,    37,    38,    39},  /* IdSel 18,  slot 5 */
 389                 {   40,    40,    41,    42,    43},  /* IdSel 19,  slot 6 */
 390                 {   44,    44,    45,    46,    47},  /* IdSel 20,  slot 7 */
 391                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 22,  none   */
 392                 /* The following are actually behind the PPB. */
 393                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 16   none */
 394                 {   28,    28,    28,    28,    28},  /* IdSel 17   NCR lynx */
 395                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 18   none */
 396                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 19   none */
 397                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 20   none */
 398                 {   -1,    -1,    -1,    -1,    -1},  /* IdSel 21   none */
 399                 {   48,    48,    49,    50,    51},  /* IdSel 22   slot 0 */
 400                 {   52,    52,    53,    54,    55},  /* IdSel 23   slot 1 */
 401                 {   56,    56,    57,    58,    59},  /* IdSel 24   slot 2 */
 402                 {   60,    60,    61,    62,    63}   /* IdSel 25   slot 3 */
 403         };
 404         const long min_idsel = 2, max_idsel = 20, irqs_per_slot = 5;
 405         return COMMON_TABLE_LOOKUP;
 406 }
 407
 408 static u8 __init
 409 lynx_swizzle(struct pci_dev *dev, u8 *pinp)
 410 {
 411         int slot, pin = *pinp;
 412
 413         if (dev->bus->number == 0) {
 414                 slot = PCI_SLOT(dev->devfn);
 415         }
 416         /* Check for the built-in bridge */
 417         else if (PCI_SLOT(dev->bus->self->devfn) == 3) {
 418                 slot = PCI_SLOT(dev->devfn) + 11;
 419         }
 420         else
 421         {
 422                 /* Must be a card-based bridge.  */
 423                 do {
 424                         if (PCI_SLOT(dev->bus->self->devfn) == 3) {
 425                                 slot = PCI_SLOT(dev->devfn) + 11;
 426                                 break;
 427                         }
 428                         pin = pci_swizzle_interrupt_pin(dev, pin);
 429
 430                         /* Move up the chain of bridges.  */
 431                         dev = dev->bus->self;
 432                         /* Slot of the next bridge.  */
 433                         slot = PCI_SLOT(dev->devfn);
 434                 } while (dev->bus->self);
 435         }
 436         *pinp = pin;
 437         return slot;
 438 }
 439
 440 #endif /* defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX) */
 441
 442 /***********************************************************************/
 443 /* GENERIC irq routines */
 444
 445 static inline void
 446 sable_lynx_enable_irq(unsigned int irq)
 447 {
 448         unsigned long bit, mask;
 449
 450         bit = sable_lynx_irq_swizzle->irq_to_mask[irq];
 451         spin_lock(&sable_lynx_irq_lock);
 452         mask = sable_lynx_irq_swizzle->shadow_mask &= ~(1UL << bit);
 453         sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
 454         spin_unlock(&sable_lynx_irq_lock);
 455 #if 0
 456         printk("%s: mask 0x%lx bit 0x%lx irq 0x%x\n",
 457                __func__, mask, bit, irq);
 458 #endif
 459 }
 460
 461 static void
 462 sable_lynx_disable_irq(unsigned int irq)
 463 {
 464         unsigned long bit, mask;
 465
 466         bit = sable_lynx_irq_swizzle->irq_to_mask[irq];
 467         spin_lock(&sable_lynx_irq_lock);
 468         mask = sable_lynx_irq_swizzle->shadow_mask |= 1UL << bit;
 469         sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
 470         spin_unlock(&sable_lynx_irq_lock);
 471 #if 0
 472         printk("%s: mask 0x%lx bit 0x%lx irq 0x%x\n",
 473                __func__, mask, bit, irq);
 474 #endif
 475 }
 476
 477 static unsigned int
 478 sable_lynx_startup_irq(unsigned int irq)
 479 {
 480         sable_lynx_enable_irq(irq);
 481         return 0;
 482 }
 483
 484 static void
 485 sable_lynx_end_irq(unsigned int irq)
 486 {
 487         if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
 488                 sable_lynx_enable_irq(irq);
 489 }
 490
 491 static void
 492 sable_lynx_mask_and_ack_irq(unsigned int irq)
 493 {
 494         unsigned long bit, mask;
 495
 496         bit = sable_lynx_irq_swizzle->irq_to_mask[irq];
 497         spin_lock(&sable_lynx_irq_lock);
 498         mask = sable_lynx_irq_swizzle->shadow_mask |= 1UL << bit;
 499         sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
 500         sable_lynx_irq_swizzle->ack_irq_hw(bit);
 501         spin_unlock(&sable_lynx_irq_lock);
 502 }
 503
 504 static struct irq_chip sable_lynx_irq_type = {
 505         .name           = "SABLE/LYNX",
 506         .startup        = sable_lynx_startup_irq,
 507         .shutdown       = sable_lynx_disable_irq,
 508         .enable         = sable_lynx_enable_irq,
 509         .disable        = sable_lynx_disable_irq,
 510         .ack            = sable_lynx_mask_and_ack_irq,
 511         .end            = sable_lynx_end_irq,
 512 };
 513
 514 static void
 515 sable_lynx_srm_device_interrupt(unsigned long vector)
 516 {
 517         /* Note that the vector reported by the SRM PALcode corresponds
 518            to the interrupt mask bits, but we have to manage via the
 519            so-called legacy IRQs for many common devices.  */
 520
 521         int bit, irq;
 522
 523         bit = (vector - 0x800) >> 4;
 524         irq = sable_lynx_irq_swizzle->mask_to_irq[bit];
 525 #if 0
 526         printk("%s: vector 0x%lx bit 0x%x irq 0x%x\n",
 527                __func__, vector, bit, irq);
 528 #endif
 529         handle_irq(irq);
 530 }
 531
 532 static void __init
 533 sable_lynx_init_irq(int nr_of_irqs)
 534 {
 535         long i;
 536
 537         for (i = 0; i < nr_of_irqs; ++i) {
 538                 irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
 539                 irq_desc[i].chip = &sable_lynx_irq_type;
 540         }
 541
 542         common_init_isa_dma();
 543 }
 544
 545 static void __init
 546 sable_lynx_init_pci(void)
 547 {
 548         common_init_pci();
 549 }
 550
 551 /*****************************************************************/
 552 /*
 553  * The System Vectors
 554  *
 555  * In order that T2_HAE_ADDRESS should be a constant, we play
 556  * these games with GAMMA_BIAS.
 557  */
 558
 559 #if defined(CONFIG_ALPHA_GENERIC) || \
 560     (defined(CONFIG_ALPHA_SABLE) && !defined(CONFIG_ALPHA_GAMMA))
 561 #undef GAMMA_BIAS
 562 #define GAMMA_BIAS 0
 563 struct alpha_machine_vector sable_mv __initmv = {
 564         .vector_name            = "Sable",
 565         DO_EV4_MMU,
 566         DO_DEFAULT_RTC,
 567         DO_T2_IO,
 568         .machine_check          = t2_machine_check,
 569         .max_isa_dma_address    = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
 570         .min_io_address         = EISA_DEFAULT_IO_BASE,
 571         .min_mem_address        = T2_DEFAULT_MEM_BASE,
 572
 573         .nr_irqs                = 40,
 574         .device_interrupt       = sable_lynx_srm_device_interrupt,
 575
 576         .init_arch              = t2_init_arch,
 577         .init_irq               = sable_init_irq,
 578         .init_rtc               = common_init_rtc,
 579         .init_pci               = sable_lynx_init_pci,
 580         .kill_arch              = t2_kill_arch,
 581         .pci_map_irq            = sable_map_irq,
 582         .pci_swizzle            = common_swizzle,
 583
 584         .sys = { .t2 = {
 585             .gamma_bias         = 0
 586         } }
 587 };
 588 ALIAS_MV(sable)
 589 #endif /* GENERIC || (SABLE && !GAMMA) */
 590
 591 #if defined(CONFIG_ALPHA_GENERIC) || \
 592     (defined(CONFIG_ALPHA_SABLE) && defined(CONFIG_ALPHA_GAMMA))
 593 #undef GAMMA_BIAS
 594 #define GAMMA_BIAS _GAMMA_BIAS
 595 struct alpha_machine_vector sable_gamma_mv __initmv = {
 596         .vector_name            = "Sable-Gamma",
 597         DO_EV5_MMU,
 598         DO_DEFAULT_RTC,
 599         DO_T2_IO,
 600         .machine_check          = t2_machine_check,
 601         .max_isa_dma_address    = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
 602         .min_io_address         = EISA_DEFAULT_IO_BASE,
 603         .min_mem_address        = T2_DEFAULT_MEM_BASE,
 604
 605         .nr_irqs                = 40,
 606         .device_interrupt       = sable_lynx_srm_device_interrupt,
 607
 608         .init_arch              = t2_init_arch,
 609         .init_irq               = sable_init_irq,
 610         .init_rtc               = common_init_rtc,
 611         .init_pci               = sable_lynx_init_pci,
 612         .kill_arch              = t2_kill_arch,
 613         .pci_map_irq            = sable_map_irq,
 614         .pci_swizzle            = common_swizzle,
 615
 616         .sys = { .t2 = {
 617             .gamma_bias         = _GAMMA_BIAS
 618         } }
 619 };
 620 ALIAS_MV(sable_gamma)
 621 #endif /* GENERIC || (SABLE && GAMMA) */
 622
 623 #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX)
 624 #undef GAMMA_BIAS
 625 #define GAMMA_BIAS _GAMMA_BIAS
 626 struct alpha_machine_vector lynx_mv __initmv = {
 627         .vector_name            = "Lynx",
 628         DO_EV4_MMU,
 629         DO_DEFAULT_RTC,
 630         DO_T2_IO,
 631         .machine_check          = t2_machine_check,
 632         .max_isa_dma_address    = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
 633         .min_io_address         = EISA_DEFAULT_IO_BASE,
 634         .min_mem_address        = T2_DEFAULT_MEM_BASE,
 635
 636         .nr_irqs                = 64,
 637         .device_interrupt       = sable_lynx_srm_device_interrupt,
 638
 639         .init_arch              = t2_init_arch,
 640         .init_irq               = lynx_init_irq,
 641         .init_rtc               = common_init_rtc,
 642         .init_pci               = sable_lynx_init_pci,
 643         .kill_arch              = t2_kill_arch,
 644         .pci_map_irq            = lynx_map_irq,
 645         .pci_swizzle            = lynx_swizzle,
 646
 647         .sys = { .t2 = {
 648             .gamma_bias         = _GAMMA_BIAS
 649         } }
 650 };
 651 ALIAS_MV(lynx)
 652 #endif /* GENERIC || LYNX */