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alpha: Fixup last users of irq_chip->typename
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1da177e4
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1/*
2 * linux/arch/alpha/kernel/sys_noritake.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 NORITAKE (AlphaServer 1000A),
9 * CORELLE (AlphaServer 800), and ALCOR Primo (AlphaStation 600A).
10 */
11
1da177e4
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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#include <linux/bitops.h>
19
20#include <asm/ptrace.h>
21#include <asm/system.h>
22#include <asm/dma.h>
23#include <asm/irq.h>
24#include <asm/mmu_context.h>
25#include <asm/io.h>
26#include <asm/pgtable.h>
27#include <asm/core_apecs.h>
28#include <asm/core_cia.h>
29#include <asm/tlbflush.h>
30
31#include "proto.h"
32#include "irq_impl.h"
33#include "pci_impl.h"
34#include "machvec_impl.h"
35
36/* Note mask bit is true for ENABLED irqs. */
37static int cached_irq_mask;
38
39static inline void
40noritake_update_irq_hw(int irq, int mask)
41{
42 int port = 0x54a;
43 if (irq >= 32) {
44 mask >>= 16;
45 port = 0x54c;
46 }
47 outw(mask, port);
48}
49
50static void
51noritake_enable_irq(unsigned int irq)
52{
53 noritake_update_irq_hw(irq, cached_irq_mask |= 1 << (irq - 16));
54}
55
56static void
57noritake_disable_irq(unsigned int irq)
58{
59 noritake_update_irq_hw(irq, cached_irq_mask &= ~(1 << (irq - 16)));
60}
61
62static unsigned int
63noritake_startup_irq(unsigned int irq)
64{
65 noritake_enable_irq(irq);
66 return 0;
67}
68
1b75b05b
IK
69static void
70noritake_end_irq(unsigned int irq)
71{
72 if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
73 noritake_enable_irq(irq);
74}
75
44377f62 76static struct irq_chip noritake_irq_type = {
8ab1221c 77 .name = "NORITAKE",
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78 .startup = noritake_startup_irq,
79 .shutdown = noritake_disable_irq,
80 .enable = noritake_enable_irq,
81 .disable = noritake_disable_irq,
82 .ack = noritake_disable_irq,
1b75b05b 83 .end = noritake_end_irq,
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84};
85
86static void
7ca56053 87noritake_device_interrupt(unsigned long vector)
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88{
89 unsigned long pld;
90 unsigned int i;
91
92 /* Read the interrupt summary registers of NORITAKE */
93 pld = (((unsigned long) inw(0x54c) << 32)
94 | ((unsigned long) inw(0x54a) << 16)
95 | ((unsigned long) inb(0xa0) << 8)
96 | inb(0x20));
97
98 /*
99 * Now for every possible bit set, work through them and call
100 * the appropriate interrupt handler.
101 */
102 while (pld) {
103 i = ffz(~pld);
104 pld &= pld - 1; /* clear least bit set */
105 if (i < 16) {
7ca56053 106 isa_device_interrupt(vector);
1da177e4 107 } else {
3dbb8c62 108 handle_irq(i);
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109 }
110 }
111}
112
113static void
7ca56053 114noritake_srm_device_interrupt(unsigned long vector)
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115{
116 int irq;
117
118 irq = (vector - 0x800) >> 4;
119
120 /*
121 * I really hate to do this, too, but the NORITAKE SRM console also
122 * reports PCI vectors *lower* than I expected from the bit numbers
123 * in the documentation.
124 * But I really don't want to change the fixup code for allocation
125 * of IRQs, nor the alpha_irq_mask maintenance stuff, both of which
126 * look nice and clean now.
127 * So, here's this additional grotty hack... :-(
128 */
129 if (irq >= 16)
130 irq = irq + 1;
131
3dbb8c62 132 handle_irq(irq);
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133}
134
135static void __init
136noritake_init_irq(void)
137{
138 long i;
139
140 if (alpha_using_srm)
141 alpha_mv.device_interrupt = noritake_srm_device_interrupt;
142
143 outw(0, 0x54a);
144 outw(0, 0x54c);
145
146 for (i = 16; i < 48; ++i) {
147 irq_desc[i].status = IRQ_DISABLED | IRQ_LEVEL;
d1bef4ed 148 irq_desc[i].chip = &noritake_irq_type;
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149 }
150
151 init_i8259a_irqs();
152 common_init_isa_dma();
153}
154
155
156/*
157 * PCI Fixup configuration.
158 *
159 * Summary @ 0x542, summary register #1:
160 * Bit Meaning
161 * 0 All valid ints from summary regs 2 & 3
162 * 1 QLOGIC ISP1020A SCSI
163 * 2 Interrupt Line A from slot 0
164 * 3 Interrupt Line B from slot 0
165 * 4 Interrupt Line A from slot 1
166 * 5 Interrupt line B from slot 1
167 * 6 Interrupt Line A from slot 2
168 * 7 Interrupt Line B from slot 2
169 * 8 Interrupt Line A from slot 3
170 * 9 Interrupt Line B from slot 3
171 *10 Interrupt Line A from slot 4
172 *11 Interrupt Line B from slot 4
173 *12 Interrupt Line A from slot 5
174 *13 Interrupt Line B from slot 5
175 *14 Interrupt Line A from slot 6
176 *15 Interrupt Line B from slot 6
177 *
178 * Summary @ 0x544, summary register #2:
179 * Bit Meaning
180 * 0 OR of all unmasked ints in SR #2
181 * 1 OR of secondary bus ints
182 * 2 Interrupt Line C from slot 0
183 * 3 Interrupt Line D from slot 0
184 * 4 Interrupt Line C from slot 1
185 * 5 Interrupt line D from slot 1
186 * 6 Interrupt Line C from slot 2
187 * 7 Interrupt Line D from slot 2
188 * 8 Interrupt Line C from slot 3
189 * 9 Interrupt Line D from slot 3
190 *10 Interrupt Line C from slot 4
191 *11 Interrupt Line D from slot 4
192 *12 Interrupt Line C from slot 5
193 *13 Interrupt Line D from slot 5
194 *14 Interrupt Line C from slot 6
195 *15 Interrupt Line D from slot 6
196 *
197 * The device to slot mapping looks like:
198 *
199 * Slot Device
200 * 7 Intel PCI-EISA bridge chip
201 * 8 DEC PCI-PCI bridge chip
202 * 11 PCI on board slot 0
203 * 12 PCI on board slot 1
204 * 13 PCI on board slot 2
205 *
206 *
207 * This two layered interrupt approach means that we allocate IRQ 16 and
208 * above for PCI interrupts. The IRQ relates to which bit the interrupt
209 * comes in on. This makes interrupt processing much easier.
210 */
211
212static int __init
213noritake_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
214{
215 static char irq_tab[15][5] __initdata = {
216 /*INT INTA INTB INTC INTD */
217 /* note: IDSELs 16, 17, and 25 are CORELLE only */
218 { 16+1, 16+1, 16+1, 16+1, 16+1}, /* IdSel 16, QLOGIC */
219 { -1, -1, -1, -1, -1}, /* IdSel 17, S3 Trio64 */
220 { -1, -1, -1, -1, -1}, /* IdSel 18, PCEB */
221 { -1, -1, -1, -1, -1}, /* IdSel 19, PPB */
222 { -1, -1, -1, -1, -1}, /* IdSel 20, ???? */
223 { -1, -1, -1, -1, -1}, /* IdSel 21, ???? */
224 { 16+2, 16+2, 16+3, 32+2, 32+3}, /* IdSel 22, slot 0 */
225 { 16+4, 16+4, 16+5, 32+4, 32+5}, /* IdSel 23, slot 1 */
226 { 16+6, 16+6, 16+7, 32+6, 32+7}, /* IdSel 24, slot 2 */
227 { 16+8, 16+8, 16+9, 32+8, 32+9}, /* IdSel 25, slot 3 */
228 /* The following 5 are actually on PCI bus 1, which is
229 across the built-in bridge of the NORITAKE only. */
230 { 16+1, 16+1, 16+1, 16+1, 16+1}, /* IdSel 16, QLOGIC */
231 { 16+8, 16+8, 16+9, 32+8, 32+9}, /* IdSel 17, slot 3 */
232 {16+10, 16+10, 16+11, 32+10, 32+11}, /* IdSel 18, slot 4 */
233 {16+12, 16+12, 16+13, 32+12, 32+13}, /* IdSel 19, slot 5 */
234 {16+14, 16+14, 16+15, 32+14, 32+15}, /* IdSel 20, slot 6 */
235 };
236 const long min_idsel = 5, max_idsel = 19, irqs_per_slot = 5;
237 return COMMON_TABLE_LOOKUP;
238}
239
240static u8 __init
241noritake_swizzle(struct pci_dev *dev, u8 *pinp)
242{
243 int slot, pin = *pinp;
244
245 if (dev->bus->number == 0) {
246 slot = PCI_SLOT(dev->devfn);
247 }
248 /* Check for the built-in bridge */
249 else if (PCI_SLOT(dev->bus->self->devfn) == 8) {
250 slot = PCI_SLOT(dev->devfn) + 15; /* WAG! */
251 }
252 else
253 {
254 /* Must be a card-based bridge. */
255 do {
256 if (PCI_SLOT(dev->bus->self->devfn) == 8) {
257 slot = PCI_SLOT(dev->devfn) + 15;
258 break;
259 }
1be9baa0 260 pin = pci_swizzle_interrupt_pin(dev, pin);
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261
262 /* Move up the chain of bridges. */
263 dev = dev->bus->self;
264 /* Slot of the next bridge. */
265 slot = PCI_SLOT(dev->devfn);
266 } while (dev->bus->self);
267 }
268 *pinp = pin;
269 return slot;
270}
271
272#if defined(CONFIG_ALPHA_GENERIC) || !defined(CONFIG_ALPHA_PRIMO)
273static void
4fa1970a 274noritake_apecs_machine_check(unsigned long vector, unsigned long la_ptr)
1da177e4
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275{
276#define MCHK_NO_DEVSEL 0x205U
277#define MCHK_NO_TABT 0x204U
278
279 struct el_common *mchk_header;
280 unsigned int code;
281
282 mchk_header = (struct el_common *)la_ptr;
283
284 /* Clear the error before any reporting. */
285 mb();
286 mb(); /* magic */
287 draina();
288 apecs_pci_clr_err();
289 wrmces(0x7);
290 mb();
291
292 code = mchk_header->code;
4fa1970a 293 process_mcheck_info(vector, la_ptr, "NORITAKE APECS",
1da177e4
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294 (mcheck_expected(0)
295 && (code == MCHK_NO_DEVSEL
296 || code == MCHK_NO_TABT)));
297}
298#endif
299
300
301/*
302 * The System Vectors
303 */
304
305#if defined(CONFIG_ALPHA_GENERIC) || !defined(CONFIG_ALPHA_PRIMO)
306struct alpha_machine_vector noritake_mv __initmv = {
307 .vector_name = "Noritake",
308 DO_EV4_MMU,
309 DO_DEFAULT_RTC,
310 DO_APECS_IO,
311 .machine_check = noritake_apecs_machine_check,
312 .max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
313 .min_io_address = EISA_DEFAULT_IO_BASE,
314 .min_mem_address = APECS_AND_LCA_DEFAULT_MEM_BASE,
315
316 .nr_irqs = 48,
317 .device_interrupt = noritake_device_interrupt,
318
319 .init_arch = apecs_init_arch,
320 .init_irq = noritake_init_irq,
321 .init_rtc = common_init_rtc,
322 .init_pci = common_init_pci,
323 .pci_map_irq = noritake_map_irq,
324 .pci_swizzle = noritake_swizzle,
325};
326ALIAS_MV(noritake)
327#endif
328
329#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_PRIMO)
330struct alpha_machine_vector noritake_primo_mv __initmv = {
331 .vector_name = "Noritake-Primo",
332 DO_EV5_MMU,
333 DO_DEFAULT_RTC,
334 DO_CIA_IO,
335 .machine_check = cia_machine_check,
336 .max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS,
337 .min_io_address = EISA_DEFAULT_IO_BASE,
338 .min_mem_address = CIA_DEFAULT_MEM_BASE,
339
340 .nr_irqs = 48,
341 .device_interrupt = noritake_device_interrupt,
342
343 .init_arch = cia_init_arch,
344 .init_irq = noritake_init_irq,
345 .init_rtc = common_init_rtc,
346 .init_pci = cia_init_pci,
347 .kill_arch = cia_kill_arch,
348 .pci_map_irq = noritake_map_irq,
349 .pci_swizzle = noritake_swizzle,
350};
351ALIAS_MV(noritake_primo)
352#endif