1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/arch/alpha/kernel/sys_sable.c
4 *
5 * Copyright (C) 1995 David A Rusling
6 * Copyright (C) 1996 Jay A Estabrook
7 * Copyright (C) 1998, 1999 Richard Henderson
8 *
9 * Code supporting the Sable, Sable-Gamma, and Lynx systems.
10 */
11
12#include <linux/kernel.h>
13#include <linux/types.h>
14#include <linux/mm.h>
15#include <linux/sched.h>
16#include <linux/pci.h>
17#include <linux/init.h>
18
19#include <asm/ptrace.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/core_t2.h>
25#include <asm/tlbflush.h>
26
27#include "proto.h"
28#include "irq_impl.h"
29#include "pci_impl.h"
30#include "machvec_impl.h"
31
32DEFINE_SPINLOCK(sable_lynx_irq_lock);
33
34typedef struct irq_swizzle_struct
35{
36 char irq_to_mask[64];
37 char mask_to_irq[64];
38
39 /* Note mask bit is true for DISABLED irqs. */
40 unsigned long shadow_mask;
41
42 void (*update_irq_hw)(unsigned long bit, unsigned long mask);
43 void (*ack_irq_hw)(unsigned long bit);
44
45} irq_swizzle_t;
46
47static irq_swizzle_t *sable_lynx_irq_swizzle;
48
49static void sable_lynx_init_irq(int nr_of_irqs);
50
51#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SABLE)
52
53/***********************************************************************/
54/*
55 * For SABLE, which is really baroque, we manage 40 IRQ's, but the
56 * hardware really only supports 24, not via normal ISA PIC,
57 * but cascaded custom 8259's, etc.
58 * 0-7 (char at 536)
59 * 8-15 (char at 53a)
60 * 16-23 (char at 53c)
61 *
62 * Summary Registers (536/53a/53c):
63 *
64 * Bit Meaning Kernel IRQ
65 *------------------------------------------
66 * 0 PCI slot 0 34
67 * 1 NCR810 (builtin) 33
68 * 2 TULIP (builtin) 32
69 * 3 mouse 12
70 * 4 PCI slot 1 35
71 * 5 PCI slot 2 36
72 * 6 keyboard 1
73 * 7 floppy 6
74 * 8 COM2 3
75 * 9 parallel port 7
76 *10 EISA irq 3 -
77 *11 EISA irq 4 -
78 *12 EISA irq 5 5
79 *13 EISA irq 6 -
80 *14 EISA irq 7 -
81 *15 COM1 4
82 *16 EISA irq 9 9
83 *17 EISA irq 10 10
84 *18 EISA irq 11 11
85 *19 EISA irq 12 -
86 *20 EISA irq 13 -
87 *21 EISA irq 14 14
88 *22 NC 15
89 *23 IIC -
90 */
91
92static void
93sable_update_irq_hw(unsigned long bit, unsigned long mask)
94{
95 int port = 0x537;
96
97 if (bit >= 16) {
98 port = 0x53d;
99 mask >>= 16;
100 } else if (bit >= 8) {
101 port = 0x53b;
102 mask >>= 8;
103 }
104
105 outb(mask, port);
106}
107
108static void
109sable_ack_irq_hw(unsigned long bit)
110{
111 int port, val1, val2;
112
113 if (bit >= 16) {
114 port = 0x53c;
115 val1 = 0xE0 | (bit - 16);
116 val2 = 0xE0 | 4;
117 } else if (bit >= 8) {
118 port = 0x53a;
119 val1 = 0xE0 | (bit - 8);
120 val2 = 0xE0 | 3;
121 } else {
122 port = 0x536;
123 val1 = 0xE0 | (bit - 0);
124 val2 = 0xE0 | 1;
125 }
126
127 outb(val1, port); /* ack the slave */
128 outb(val2, 0x534); /* ack the master */
129}
130
131static irq_swizzle_t sable_irq_swizzle = {
132 {
133 -1, 6, -1, 8, 15, 12, 7, 9, /* pseudo PIC 0-7 */
134 -1, 16, 17, 18, 3, -1, 21, 22, /* pseudo PIC 8-15 */
135 -1, -1, -1, -1, -1, -1, -1, -1, /* pseudo EISA 0-7 */
136 -1, -1, -1, -1, -1, -1, -1, -1, /* pseudo EISA 8-15 */
137 2, 1, 0, 4, 5, -1, -1, -1, /* pseudo PCI */
138 -1, -1, -1, -1, -1, -1, -1, -1, /* */
139 -1, -1, -1, -1, -1, -1, -1, -1, /* */
140 -1, -1, -1, -1, -1, -1, -1, -1 /* */
141 },
142 {
143 34, 33, 32, 12, 35, 36, 1, 6, /* mask 0-7 */
144 3, 7, -1, -1, 5, -1, -1, 4, /* mask 8-15 */
145 9, 10, 11, -1, -1, 14, 15, -1, /* mask 16-23 */
146 -1, -1, -1, -1, -1, -1, -1, -1, /* */
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 },
152 -1,
153 sable_update_irq_hw,
154 sable_ack_irq_hw
155};
156
157static void __init
158sable_init_irq(void)
159{
160 outb(-1, 0x537); /* slave 0 */
161 outb(-1, 0x53b); /* slave 1 */
162 outb(-1, 0x53d); /* slave 2 */
163 outb(0x44, 0x535); /* enable cascades in master */
164
165 sable_lynx_irq_swizzle = &sable_irq_swizzle;
166 sable_lynx_init_irq(40);
167}
168
169/*
170 * PCI Fixup configuration for ALPHA SABLE (2100).
171 *
172 * The device to slot mapping looks like:
173 *
174 * Slot Device
175 * 0 TULIP
176 * 1 SCSI
177 * 2 PCI-EISA bridge
178 * 3 none
179 * 4 none
180 * 5 none
181 * 6 PCI on board slot 0
182 * 7 PCI on board slot 1
183 * 8 PCI on board slot 2
184 *
185 *
186 * This two layered interrupt approach means that we allocate IRQ 16 and
187 * above for PCI interrupts. The IRQ relates to which bit the interrupt
188 * comes in on. This makes interrupt processing much easier.
189 */
190/*
191 * NOTE: the IRQ assignments below are arbitrary, but need to be consistent
192 * with the values in the irq swizzling tables above.
193 */
194
195static int
196sable_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
197{
198 static char irq_tab[9][5] = {
199 /*INT INTA INTB INTC INTD */
200 { 32+0, 32+0, 32+0, 32+0, 32+0}, /* IdSel 0, TULIP */
201 { 32+1, 32+1, 32+1, 32+1, 32+1}, /* IdSel 1, SCSI */
202 { -1, -1, -1, -1, -1}, /* IdSel 2, SIO */
203 { -1, -1, -1, -1, -1}, /* IdSel 3, none */
204 { -1, -1, -1, -1, -1}, /* IdSel 4, none */
205 { -1, -1, -1, -1, -1}, /* IdSel 5, none */
206 { 32+2, 32+2, 32+2, 32+2, 32+2}, /* IdSel 6, slot 0 */
207 { 32+3, 32+3, 32+3, 32+3, 32+3}, /* IdSel 7, slot 1 */
208 { 32+4, 32+4, 32+4, 32+4, 32+4} /* IdSel 8, slot 2 */
209 };
210 long min_idsel = 0, max_idsel = 8, irqs_per_slot = 5;
211 return COMMON_TABLE_LOOKUP;
212}
213#endif /* defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SABLE) */
214
215#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX)
216
217/***********************************************************************/
218/* LYNX hardware specifics
219 */
220/*
221 * For LYNX, which is also baroque, we manage 64 IRQs, via a custom IC.
222 *
223 * Bit Meaning Kernel IRQ
224 *------------------------------------------
225 * 0
226 * 1
227 * 2
228 * 3 mouse 12
229 * 4
230 * 5
231 * 6 keyboard 1
232 * 7 floppy 6
233 * 8 COM2 3
234 * 9 parallel port 7
235 *10 EISA irq 3 -
236 *11 EISA irq 4 -
237 *12 EISA irq 5 5
238 *13 EISA irq 6 -
239 *14 EISA irq 7 -
240 *15 COM1 4
241 *16 EISA irq 9 9
242 *17 EISA irq 10 10
243 *18 EISA irq 11 11
244 *19 EISA irq 12 -
245 *20
246 *21 EISA irq 14 14
247 *22 EISA irq 15 15
248 *23 IIC -
249 *24 VGA (builtin) -
250 *25
251 *26
252 *27
253 *28 NCR810 (builtin) 28
254 *29
255 *30
256 *31
257 *32 PCI 0 slot 4 A primary bus 32
258 *33 PCI 0 slot 4 B primary bus 33
259 *34 PCI 0 slot 4 C primary bus 34
260 *35 PCI 0 slot 4 D primary bus
261 *36 PCI 0 slot 5 A primary bus
262 *37 PCI 0 slot 5 B primary bus
263 *38 PCI 0 slot 5 C primary bus
264 *39 PCI 0 slot 5 D primary bus
265 *40 PCI 0 slot 6 A primary bus
266 *41 PCI 0 slot 6 B primary bus
267 *42 PCI 0 slot 6 C primary bus
268 *43 PCI 0 slot 6 D primary bus
269 *44 PCI 0 slot 7 A primary bus
270 *45 PCI 0 slot 7 B primary bus
271 *46 PCI 0 slot 7 C primary bus
272 *47 PCI 0 slot 7 D primary bus
273 *48 PCI 0 slot 0 A secondary bus
274 *49 PCI 0 slot 0 B secondary bus
275 *50 PCI 0 slot 0 C secondary bus
276 *51 PCI 0 slot 0 D secondary bus
277 *52 PCI 0 slot 1 A secondary bus
278 *53 PCI 0 slot 1 B secondary bus
279 *54 PCI 0 slot 1 C secondary bus
280 *55 PCI 0 slot 1 D secondary bus
281 *56 PCI 0 slot 2 A secondary bus
282 *57 PCI 0 slot 2 B secondary bus
283 *58 PCI 0 slot 2 C secondary bus
284 *59 PCI 0 slot 2 D secondary bus
285 *60 PCI 0 slot 3 A secondary bus
286 *61 PCI 0 slot 3 B secondary bus
287 *62 PCI 0 slot 3 C secondary bus
288 *63 PCI 0 slot 3 D secondary bus
289 */
290
291static void
292lynx_update_irq_hw(unsigned long bit, unsigned long mask)
293{
294 /*
295 * Write the AIR register on the T3/T4 with the
296 * address of the IC mask register (offset 0x40)
297 */
298 *(vulp)T2_AIR = 0x40;
299 mb();
300 *(vulp)T2_AIR; /* re-read to force write */
301 mb();
302 *(vulp)T2_DIR = mask;
303 mb();
304 mb();
305}
306
307static void
308lynx_ack_irq_hw(unsigned long bit)
309{
310 *(vulp)T2_VAR = (u_long) bit;
311 mb();
312 mb();
313}
314
315static irq_swizzle_t lynx_irq_swizzle = {
316 { /* irq_to_mask */
317 -1, 6, -1, 8, 15, 12, 7, 9, /* pseudo PIC 0-7 */
318 -1, 16, 17, 18, 3, -1, 21, 22, /* pseudo PIC 8-15 */
319 -1, -1, -1, -1, -1, -1, -1, -1, /* pseudo */
320 -1, -1, -1, -1, 28, -1, -1, -1, /* pseudo */
321 32, 33, 34, 35, 36, 37, 38, 39, /* mask 32-39 */
322 40, 41, 42, 43, 44, 45, 46, 47, /* mask 40-47 */
323 48, 49, 50, 51, 52, 53, 54, 55, /* mask 48-55 */
324 56, 57, 58, 59, 60, 61, 62, 63 /* mask 56-63 */
325 },
326 { /* mask_to_irq */
327 -1, -1, -1, 12, -1, -1, 1, 6, /* mask 0-7 */
328 3, 7, -1, -1, 5, -1, -1, 4, /* mask 8-15 */
329 9, 10, 11, -1, -1, 14, 15, -1, /* mask 16-23 */
330 -1, -1, -1, -1, 28, -1, -1, -1, /* mask 24-31 */
331 32, 33, 34, 35, 36, 37, 38, 39, /* mask 32-39 */
332 40, 41, 42, 43, 44, 45, 46, 47, /* mask 40-47 */
333 48, 49, 50, 51, 52, 53, 54, 55, /* mask 48-55 */
334 56, 57, 58, 59, 60, 61, 62, 63 /* mask 56-63 */
335 },
336 -1,
337 lynx_update_irq_hw,
338 lynx_ack_irq_hw
339};
340
341static void __init
342lynx_init_irq(void)
343{
344 sable_lynx_irq_swizzle = &lynx_irq_swizzle;
345 sable_lynx_init_irq(64);
346}
347
348/*
349 * PCI Fixup configuration for ALPHA LYNX (2100A)
350 *
351 * The device to slot mapping looks like:
352 *
353 * Slot Device
354 * 0 none
355 * 1 none
356 * 2 PCI-EISA bridge
357 * 3 PCI-PCI bridge
358 * 4 NCR 810 (Demi-Lynx only)
359 * 5 none
360 * 6 PCI on board slot 4
361 * 7 PCI on board slot 5
362 * 8 PCI on board slot 6
363 * 9 PCI on board slot 7
364 *
365 * And behind the PPB we have:
366 *
367 * 11 PCI on board slot 0
368 * 12 PCI on board slot 1
369 * 13 PCI on board slot 2
370 * 14 PCI on board slot 3
371 */
372/*
373 * NOTE: the IRQ assignments below are arbitrary, but need to be consistent
374 * with the values in the irq swizzling tables above.
375 */
376
377static int
378lynx_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
379{
380 static char irq_tab[19][5] = {
381 /*INT INTA INTB INTC INTD */
382 { -1, -1, -1, -1, -1}, /* IdSel 13, PCEB */
383 { -1, -1, -1, -1, -1}, /* IdSel 14, PPB */
384 { 28, 28, 28, 28, 28}, /* IdSel 15, NCR demi */
385 { -1, -1, -1, -1, -1}, /* IdSel 16, none */
386 { 32, 32, 33, 34, 35}, /* IdSel 17, slot 4 */
387 { 36, 36, 37, 38, 39}, /* IdSel 18, slot 5 */
388 { 40, 40, 41, 42, 43}, /* IdSel 19, slot 6 */
389 { 44, 44, 45, 46, 47}, /* IdSel 20, slot 7 */
390 { -1, -1, -1, -1, -1}, /* IdSel 22, none */
391 /* The following are actually behind the PPB. */
392 { -1, -1, -1, -1, -1}, /* IdSel 16 none */
393 { 28, 28, 28, 28, 28}, /* IdSel 17 NCR lynx */
394 { -1, -1, -1, -1, -1}, /* IdSel 18 none */
395 { -1, -1, -1, -1, -1}, /* IdSel 19 none */
396 { -1, -1, -1, -1, -1}, /* IdSel 20 none */
397 { -1, -1, -1, -1, -1}, /* IdSel 21 none */
398 { 48, 48, 49, 50, 51}, /* IdSel 22 slot 0 */
399 { 52, 52, 53, 54, 55}, /* IdSel 23 slot 1 */
400 { 56, 56, 57, 58, 59}, /* IdSel 24 slot 2 */
401 { 60, 60, 61, 62, 63} /* IdSel 25 slot 3 */
402 };
403 const long min_idsel = 2, max_idsel = 20, irqs_per_slot = 5;
404 return COMMON_TABLE_LOOKUP;
405}
406
407static u8
408lynx_swizzle(struct pci_dev *dev, u8 *pinp)
409{
410 int slot, pin = *pinp;
411
412 if (dev->bus->number == 0) {
413 slot = PCI_SLOT(dev->devfn);
414 }
415 /* Check for the built-in bridge */
416 else if (PCI_SLOT(dev->bus->self->devfn) == 3) {
417 slot = PCI_SLOT(dev->devfn) + 11;
418 }
419 else
420 {
421 /* Must be a card-based bridge. */
422 do {
423 if (PCI_SLOT(dev->bus->self->devfn) == 3) {
424 slot = PCI_SLOT(dev->devfn) + 11;
425 break;
426 }
427 pin = pci_swizzle_interrupt_pin(dev, pin);
428
429 /* Move up the chain of bridges. */
430 dev = dev->bus->self;
431 /* Slot of the next bridge. */
432 slot = PCI_SLOT(dev->devfn);
433 } while (dev->bus->self);
434 }
435 *pinp = pin;
436 return slot;
437}
438
439#endif /* defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX) */
440
441/***********************************************************************/
442/* GENERIC irq routines */
443
444static inline void
445sable_lynx_enable_irq(struct irq_data *d)
446{
447 unsigned long bit, mask;
448
449 bit = sable_lynx_irq_swizzle->irq_to_mask[d->irq];
450 spin_lock(lock: &sable_lynx_irq_lock);
451 mask = sable_lynx_irq_swizzle->shadow_mask &= ~(1UL << bit);
452 sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
453 spin_unlock(lock: &sable_lynx_irq_lock);
454#if 0
455 printk("%s: mask 0x%lx bit 0x%lx irq 0x%x\n",
456 __func__, mask, bit, irq);
457#endif
458}
459
460static void
461sable_lynx_disable_irq(struct irq_data *d)
462{
463 unsigned long bit, mask;
464
465 bit = sable_lynx_irq_swizzle->irq_to_mask[d->irq];
466 spin_lock(lock: &sable_lynx_irq_lock);
467 mask = sable_lynx_irq_swizzle->shadow_mask |= 1UL << bit;
468 sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
469 spin_unlock(lock: &sable_lynx_irq_lock);
470#if 0
471 printk("%s: mask 0x%lx bit 0x%lx irq 0x%x\n",
472 __func__, mask, bit, irq);
473#endif
474}
475
476static void
477sable_lynx_mask_and_ack_irq(struct irq_data *d)
478{
479 unsigned long bit, mask;
480
481 bit = sable_lynx_irq_swizzle->irq_to_mask[d->irq];
482 spin_lock(lock: &sable_lynx_irq_lock);
483 mask = sable_lynx_irq_swizzle->shadow_mask |= 1UL << bit;
484 sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
485 sable_lynx_irq_swizzle->ack_irq_hw(bit);
486 spin_unlock(lock: &sable_lynx_irq_lock);
487}
488
489static struct irq_chip sable_lynx_irq_type = {
490 .name = "SABLE/LYNX",
491 .irq_unmask = sable_lynx_enable_irq,
492 .irq_mask = sable_lynx_disable_irq,
493 .irq_mask_ack = sable_lynx_mask_and_ack_irq,
494};
495
496static void
497sable_lynx_srm_device_interrupt(unsigned long vector)
498{
499 /* Note that the vector reported by the SRM PALcode corresponds
500 to the interrupt mask bits, but we have to manage via the
501 so-called legacy IRQs for many common devices. */
502
503 int bit, irq;
504
505 bit = (vector - 0x800) >> 4;
506 irq = sable_lynx_irq_swizzle->mask_to_irq[bit];
507#if 0
508 printk("%s: vector 0x%lx bit 0x%x irq 0x%x\n",
509 __func__, vector, bit, irq);
510#endif
511 handle_irq(irq);
512}
513
514static void __init
515sable_lynx_init_irq(int nr_of_irqs)
516{
517 long i;
518
519 for (i = 0; i < nr_of_irqs; ++i) {
520 irq_set_chip_and_handler(irq: i, chip: &sable_lynx_irq_type,
521 handle: handle_level_irq);
522 irq_set_status_flags(irq: i, set: IRQ_LEVEL);
523 }
524
525 common_init_isa_dma();
526}
527
528static void __init
529sable_lynx_init_pci(void)
530{
531 common_init_pci();
532}
533
534/*****************************************************************/
535/*
536 * The System Vectors
537 *
538 * In order that T2_HAE_ADDRESS should be a constant, we play
539 * these games with GAMMA_BIAS.
540 */
541
542#if defined(CONFIG_ALPHA_GENERIC) || \
543 (defined(CONFIG_ALPHA_SABLE) && !defined(CONFIG_ALPHA_GAMMA))
544#undef GAMMA_BIAS
545#define GAMMA_BIAS 0
546struct alpha_machine_vector sable_mv __initmv = {
547 .vector_name = "Sable",
548 DO_EV4_MMU,
549 DO_DEFAULT_RTC,
550 DO_T2_IO,
551 .machine_check = t2_machine_check,
552 .max_isa_dma_address = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
553 .min_io_address = EISA_DEFAULT_IO_BASE,
554 .min_mem_address = T2_DEFAULT_MEM_BASE,
555
556 .nr_irqs = 40,
557 .device_interrupt = sable_lynx_srm_device_interrupt,
558
559 .init_arch = t2_init_arch,
560 .init_irq = sable_init_irq,
561 .init_rtc = common_init_rtc,
562 .init_pci = sable_lynx_init_pci,
563 .kill_arch = t2_kill_arch,
564 .pci_map_irq = sable_map_irq,
565 .pci_swizzle = common_swizzle,
566
567 .sys = { .t2 = {
568 .gamma_bias = 0
569 } }
570};
571ALIAS_MV(sable)
572#endif /* GENERIC || (SABLE && !GAMMA) */
573
574#if defined(CONFIG_ALPHA_GENERIC) || \
575 (defined(CONFIG_ALPHA_SABLE) && defined(CONFIG_ALPHA_GAMMA))
576#undef GAMMA_BIAS
577#define GAMMA_BIAS _GAMMA_BIAS
578struct alpha_machine_vector sable_gamma_mv __initmv = {
579 .vector_name = "Sable-Gamma",
580 DO_EV5_MMU,
581 DO_DEFAULT_RTC,
582 DO_T2_IO,
583 .machine_check = t2_machine_check,
584 .max_isa_dma_address = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
585 .min_io_address = EISA_DEFAULT_IO_BASE,
586 .min_mem_address = T2_DEFAULT_MEM_BASE,
587
588 .nr_irqs = 40,
589 .device_interrupt = sable_lynx_srm_device_interrupt,
590
591 .init_arch = t2_init_arch,
592 .init_irq = sable_init_irq,
593 .init_rtc = common_init_rtc,
594 .init_pci = sable_lynx_init_pci,
595 .kill_arch = t2_kill_arch,
596 .pci_map_irq = sable_map_irq,
597 .pci_swizzle = common_swizzle,
598
599 .sys = { .t2 = {
600 .gamma_bias = _GAMMA_BIAS
601 } }
602};
603ALIAS_MV(sable_gamma)
604#endif /* GENERIC || (SABLE && GAMMA) */
605
606#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX)
607#undef GAMMA_BIAS
608#define GAMMA_BIAS _GAMMA_BIAS
609struct alpha_machine_vector lynx_mv __initmv = {
610 .vector_name = "Lynx",
611 DO_EV4_MMU,
612 DO_DEFAULT_RTC,
613 DO_T2_IO,
614 .machine_check = t2_machine_check,
615 .max_isa_dma_address = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
616 .min_io_address = EISA_DEFAULT_IO_BASE,
617 .min_mem_address = T2_DEFAULT_MEM_BASE,
618
619 .nr_irqs = 64,
620 .device_interrupt = sable_lynx_srm_device_interrupt,
621
622 .init_arch = t2_init_arch,
623 .init_irq = lynx_init_irq,
624 .init_rtc = common_init_rtc,
625 .init_pci = sable_lynx_init_pci,
626 .kill_arch = t2_kill_arch,
627 .pci_map_irq = lynx_map_irq,
628 .pci_swizzle = lynx_swizzle,
629
630 .sys = { .t2 = {
631 .gamma_bias = _GAMMA_BIAS
632 } }
633};
634ALIAS_MV(lynx)
635#endif /* GENERIC || LYNX */
636

source code of linux/arch/alpha/kernel/sys_sable.c