Commit | Line | Data |
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1394f032 | 1 | /* |
cfefe3c6 | 2 | * File: arch/blackfin/mach-common/ints-priority.c |
1394f032 BW |
3 | * Based on: |
4 | * Author: | |
5 | * | |
6 | * Created: ? | |
d2d50aa9 | 7 | * Description: Set up the interrupt priorities |
1394f032 BW |
8 | * |
9 | * Modified: | |
10 | * 1996 Roman Zippel | |
11 | * 1999 D. Jeff Dionne <jeff@uclinux.org> | |
12 | * 2000-2001 Lineo, Inc. D. Jefff Dionne <jeff@lineo.ca> | |
13 | * 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca> | |
14 | * 2003 Metrowerks/Motorola | |
15 | * 2003 Bas Vermeulen <bas@buyways.nl> | |
cfefe3c6 | 16 | * Copyright 2004-2008 Analog Devices Inc. |
1394f032 BW |
17 | * |
18 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ | |
19 | * | |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, see the file COPYING, or write | |
32 | * to the Free Software Foundation, Inc., | |
33 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
34 | */ | |
35 | ||
36 | #include <linux/module.h> | |
37 | #include <linux/kernel_stat.h> | |
38 | #include <linux/seq_file.h> | |
39 | #include <linux/irq.h> | |
40 | #ifdef CONFIG_KGDB | |
41 | #include <linux/kgdb.h> | |
42 | #endif | |
43 | #include <asm/traps.h> | |
44 | #include <asm/blackfin.h> | |
45 | #include <asm/gpio.h> | |
46 | #include <asm/irq_handler.h> | |
47 | ||
48 | #ifdef BF537_FAMILY | |
49 | # define BF537_GENERIC_ERROR_INT_DEMUX | |
50 | #else | |
51 | # undef BF537_GENERIC_ERROR_INT_DEMUX | |
52 | #endif | |
53 | ||
54 | /* | |
55 | * NOTES: | |
56 | * - we have separated the physical Hardware interrupt from the | |
57 | * levels that the LINUX kernel sees (see the description in irq.h) | |
58 | * - | |
59 | */ | |
60 | ||
a99bbccd MF |
61 | /* Initialize this to an actual value to force it into the .data |
62 | * section so that we know it is properly initialized at entry into | |
63 | * the kernel but before bss is initialized to zero (which is where | |
64 | * it would live otherwise). The 0x1f magic represents the IRQs we | |
65 | * cannot actually mask out in hardware. | |
66 | */ | |
67 | unsigned long irq_flags = 0x1f; | |
fe8015ce | 68 | EXPORT_SYMBOL(irq_flags); |
1394f032 BW |
69 | |
70 | /* The number of spurious interrupts */ | |
71 | atomic_t num_spurious; | |
72 | ||
cfefe3c6 MH |
73 | #ifdef CONFIG_PM |
74 | unsigned long bfin_sic_iwr[3]; /* Up to 3 SIC_IWRx registers */ | |
4a88d0ce | 75 | unsigned vr_wakeup; |
cfefe3c6 MH |
76 | #endif |
77 | ||
1394f032 | 78 | struct ivgx { |
464abc5d | 79 | /* irq number for request_irq, available in mach-bf5xx/irq.h */ |
24a07a12 | 80 | unsigned int irqno; |
1394f032 | 81 | /* corresponding bit in the SIC_ISR register */ |
24a07a12 | 82 | unsigned int isrflag; |
1394f032 BW |
83 | } ivg_table[NR_PERI_INTS]; |
84 | ||
85 | struct ivg_slice { | |
86 | /* position of first irq in ivg_table for given ivg */ | |
87 | struct ivgx *ifirst; | |
88 | struct ivgx *istop; | |
89 | } ivg7_13[IVG13 - IVG7 + 1]; | |
90 | ||
1394f032 BW |
91 | |
92 | /* | |
93 | * Search SIC_IAR and fill tables with the irqvalues | |
94 | * and their positions in the SIC_ISR register. | |
95 | */ | |
96 | static void __init search_IAR(void) | |
97 | { | |
98 | unsigned ivg, irq_pos = 0; | |
99 | for (ivg = 0; ivg <= IVG13 - IVG7; ivg++) { | |
100 | int irqn; | |
101 | ||
34e0fc89 | 102 | ivg7_13[ivg].istop = ivg7_13[ivg].ifirst = &ivg_table[irq_pos]; |
1394f032 BW |
103 | |
104 | for (irqn = 0; irqn < NR_PERI_INTS; irqn++) { | |
105 | int iar_shift = (irqn & 7) * 4; | |
2c4f829b | 106 | if (ivg == (0xf & |
2f6f4bcd BW |
107 | #if defined(CONFIG_BF52x) || defined(CONFIG_BF538) \ |
108 | || defined(CONFIG_BF539) || defined(CONFIG_BF51x) | |
34e0fc89 | 109 | bfin_read32((unsigned long *)SIC_IAR0 + |
dc26aec2 MH |
110 | ((irqn % 32) >> 3) + ((irqn / 32) * |
111 | ((SIC_IAR4 - SIC_IAR0) / 4))) >> iar_shift)) { | |
59003145 MH |
112 | #else |
113 | bfin_read32((unsigned long *)SIC_IAR0 + | |
dc26aec2 | 114 | (irqn >> 3)) >> iar_shift)) { |
59003145 | 115 | #endif |
1394f032 | 116 | ivg_table[irq_pos].irqno = IVG7 + irqn; |
24a07a12 | 117 | ivg_table[irq_pos].isrflag = 1 << (irqn % 32); |
1394f032 BW |
118 | ivg7_13[ivg].istop++; |
119 | irq_pos++; | |
120 | } | |
121 | } | |
122 | } | |
123 | } | |
124 | ||
125 | /* | |
464abc5d | 126 | * This is for core internal IRQs |
1394f032 BW |
127 | */ |
128 | ||
464abc5d | 129 | static void bfin_ack_noop(unsigned int irq) |
1394f032 BW |
130 | { |
131 | /* Dummy function. */ | |
132 | } | |
133 | ||
134 | static void bfin_core_mask_irq(unsigned int irq) | |
135 | { | |
136 | irq_flags &= ~(1 << irq); | |
137 | if (!irqs_disabled()) | |
138 | local_irq_enable(); | |
139 | } | |
140 | ||
141 | static void bfin_core_unmask_irq(unsigned int irq) | |
142 | { | |
143 | irq_flags |= 1 << irq; | |
144 | /* | |
145 | * If interrupts are enabled, IMASK must contain the same value | |
146 | * as irq_flags. Make sure that invariant holds. If interrupts | |
147 | * are currently disabled we need not do anything; one of the | |
148 | * callers will take care of setting IMASK to the proper value | |
149 | * when reenabling interrupts. | |
150 | * local_irq_enable just does "STI irq_flags", so it's exactly | |
151 | * what we need. | |
152 | */ | |
153 | if (!irqs_disabled()) | |
154 | local_irq_enable(); | |
155 | return; | |
156 | } | |
157 | ||
158 | static void bfin_internal_mask_irq(unsigned int irq) | |
159 | { | |
59003145 | 160 | #ifdef CONFIG_BF53x |
1394f032 | 161 | bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() & |
464abc5d | 162 | ~(1 << SIC_SYSIRQ(irq))); |
24a07a12 RH |
163 | #else |
164 | unsigned mask_bank, mask_bit; | |
464abc5d MH |
165 | mask_bank = SIC_SYSIRQ(irq) / 32; |
166 | mask_bit = SIC_SYSIRQ(irq) % 32; | |
c04d66bb BW |
167 | bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) & |
168 | ~(1 << mask_bit)); | |
24a07a12 | 169 | #endif |
1394f032 BW |
170 | SSYNC(); |
171 | } | |
172 | ||
173 | static void bfin_internal_unmask_irq(unsigned int irq) | |
174 | { | |
59003145 | 175 | #ifdef CONFIG_BF53x |
1394f032 | 176 | bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() | |
464abc5d | 177 | (1 << SIC_SYSIRQ(irq))); |
24a07a12 RH |
178 | #else |
179 | unsigned mask_bank, mask_bit; | |
464abc5d MH |
180 | mask_bank = SIC_SYSIRQ(irq) / 32; |
181 | mask_bit = SIC_SYSIRQ(irq) % 32; | |
c04d66bb BW |
182 | bfin_write_SIC_IMASK(mask_bank, bfin_read_SIC_IMASK(mask_bank) | |
183 | (1 << mask_bit)); | |
24a07a12 | 184 | #endif |
1394f032 BW |
185 | SSYNC(); |
186 | } | |
187 | ||
cfefe3c6 MH |
188 | #ifdef CONFIG_PM |
189 | int bfin_internal_set_wake(unsigned int irq, unsigned int state) | |
190 | { | |
4a88d0ce | 191 | unsigned bank, bit, wakeup = 0; |
cfefe3c6 | 192 | unsigned long flags; |
464abc5d MH |
193 | bank = SIC_SYSIRQ(irq) / 32; |
194 | bit = SIC_SYSIRQ(irq) % 32; | |
cfefe3c6 | 195 | |
4a88d0ce MH |
196 | switch (irq) { |
197 | #ifdef IRQ_RTC | |
198 | case IRQ_RTC: | |
199 | wakeup |= WAKE; | |
200 | break; | |
201 | #endif | |
202 | #ifdef IRQ_CAN0_RX | |
203 | case IRQ_CAN0_RX: | |
204 | wakeup |= CANWE; | |
205 | break; | |
206 | #endif | |
207 | #ifdef IRQ_CAN1_RX | |
208 | case IRQ_CAN1_RX: | |
209 | wakeup |= CANWE; | |
210 | break; | |
211 | #endif | |
212 | #ifdef IRQ_USB_INT0 | |
213 | case IRQ_USB_INT0: | |
214 | wakeup |= USBWE; | |
215 | break; | |
216 | #endif | |
217 | #ifdef IRQ_KEY | |
218 | case IRQ_KEY: | |
219 | wakeup |= KPADWE; | |
220 | break; | |
221 | #endif | |
d310fb4b | 222 | #ifdef CONFIG_BF54x |
4a88d0ce MH |
223 | case IRQ_CNT: |
224 | wakeup |= ROTWE; | |
225 | break; | |
226 | #endif | |
227 | default: | |
228 | break; | |
229 | } | |
230 | ||
cfefe3c6 MH |
231 | local_irq_save(flags); |
232 | ||
4a88d0ce | 233 | if (state) { |
cfefe3c6 | 234 | bfin_sic_iwr[bank] |= (1 << bit); |
4a88d0ce MH |
235 | vr_wakeup |= wakeup; |
236 | ||
237 | } else { | |
cfefe3c6 | 238 | bfin_sic_iwr[bank] &= ~(1 << bit); |
4a88d0ce MH |
239 | vr_wakeup &= ~wakeup; |
240 | } | |
cfefe3c6 MH |
241 | |
242 | local_irq_restore(flags); | |
243 | ||
244 | return 0; | |
245 | } | |
246 | #endif | |
247 | ||
1394f032 | 248 | static struct irq_chip bfin_core_irqchip = { |
763e63c6 | 249 | .name = "CORE", |
464abc5d | 250 | .ack = bfin_ack_noop, |
1394f032 BW |
251 | .mask = bfin_core_mask_irq, |
252 | .unmask = bfin_core_unmask_irq, | |
253 | }; | |
254 | ||
255 | static struct irq_chip bfin_internal_irqchip = { | |
763e63c6 | 256 | .name = "INTN", |
464abc5d | 257 | .ack = bfin_ack_noop, |
1394f032 BW |
258 | .mask = bfin_internal_mask_irq, |
259 | .unmask = bfin_internal_unmask_irq, | |
ce3b7bb6 MH |
260 | .mask_ack = bfin_internal_mask_irq, |
261 | .disable = bfin_internal_mask_irq, | |
262 | .enable = bfin_internal_unmask_irq, | |
cfefe3c6 MH |
263 | #ifdef CONFIG_PM |
264 | .set_wake = bfin_internal_set_wake, | |
265 | #endif | |
1394f032 BW |
266 | }; |
267 | ||
268 | #ifdef BF537_GENERIC_ERROR_INT_DEMUX | |
269 | static int error_int_mask; | |
270 | ||
1394f032 BW |
271 | static void bfin_generic_error_mask_irq(unsigned int irq) |
272 | { | |
273 | error_int_mask &= ~(1L << (irq - IRQ_PPI_ERROR)); | |
274 | ||
464abc5d MH |
275 | if (!error_int_mask) |
276 | bfin_internal_mask_irq(IRQ_GENERIC_ERROR); | |
1394f032 BW |
277 | } |
278 | ||
279 | static void bfin_generic_error_unmask_irq(unsigned int irq) | |
280 | { | |
464abc5d | 281 | bfin_internal_unmask_irq(IRQ_GENERIC_ERROR); |
1394f032 BW |
282 | error_int_mask |= 1L << (irq - IRQ_PPI_ERROR); |
283 | } | |
284 | ||
285 | static struct irq_chip bfin_generic_error_irqchip = { | |
763e63c6 | 286 | .name = "ERROR", |
464abc5d MH |
287 | .ack = bfin_ack_noop, |
288 | .mask_ack = bfin_generic_error_mask_irq, | |
1394f032 BW |
289 | .mask = bfin_generic_error_mask_irq, |
290 | .unmask = bfin_generic_error_unmask_irq, | |
291 | }; | |
292 | ||
293 | static void bfin_demux_error_irq(unsigned int int_err_irq, | |
2c4f829b | 294 | struct irq_desc *inta_desc) |
1394f032 BW |
295 | { |
296 | int irq = 0; | |
297 | ||
298 | SSYNC(); | |
299 | ||
300 | #if (defined(CONFIG_BF537) || defined(CONFIG_BF536)) | |
301 | if (bfin_read_EMAC_SYSTAT() & EMAC_ERR_MASK) | |
302 | irq = IRQ_MAC_ERROR; | |
303 | else | |
304 | #endif | |
305 | if (bfin_read_SPORT0_STAT() & SPORT_ERR_MASK) | |
306 | irq = IRQ_SPORT0_ERROR; | |
307 | else if (bfin_read_SPORT1_STAT() & SPORT_ERR_MASK) | |
308 | irq = IRQ_SPORT1_ERROR; | |
309 | else if (bfin_read_PPI_STATUS() & PPI_ERR_MASK) | |
310 | irq = IRQ_PPI_ERROR; | |
311 | else if (bfin_read_CAN_GIF() & CAN_ERR_MASK) | |
312 | irq = IRQ_CAN_ERROR; | |
313 | else if (bfin_read_SPI_STAT() & SPI_ERR_MASK) | |
314 | irq = IRQ_SPI_ERROR; | |
315 | else if ((bfin_read_UART0_IIR() & UART_ERR_MASK_STAT1) && | |
316 | (bfin_read_UART0_IIR() & UART_ERR_MASK_STAT0)) | |
317 | irq = IRQ_UART0_ERROR; | |
318 | else if ((bfin_read_UART1_IIR() & UART_ERR_MASK_STAT1) && | |
319 | (bfin_read_UART1_IIR() & UART_ERR_MASK_STAT0)) | |
320 | irq = IRQ_UART1_ERROR; | |
321 | ||
322 | if (irq) { | |
323 | if (error_int_mask & (1L << (irq - IRQ_PPI_ERROR))) { | |
324 | struct irq_desc *desc = irq_desc + irq; | |
325 | desc->handle_irq(irq, desc); | |
326 | } else { | |
327 | ||
328 | switch (irq) { | |
329 | case IRQ_PPI_ERROR: | |
330 | bfin_write_PPI_STATUS(PPI_ERR_MASK); | |
331 | break; | |
332 | #if (defined(CONFIG_BF537) || defined(CONFIG_BF536)) | |
333 | case IRQ_MAC_ERROR: | |
334 | bfin_write_EMAC_SYSTAT(EMAC_ERR_MASK); | |
335 | break; | |
336 | #endif | |
337 | case IRQ_SPORT0_ERROR: | |
338 | bfin_write_SPORT0_STAT(SPORT_ERR_MASK); | |
339 | break; | |
340 | ||
341 | case IRQ_SPORT1_ERROR: | |
342 | bfin_write_SPORT1_STAT(SPORT_ERR_MASK); | |
343 | break; | |
344 | ||
345 | case IRQ_CAN_ERROR: | |
346 | bfin_write_CAN_GIS(CAN_ERR_MASK); | |
347 | break; | |
348 | ||
349 | case IRQ_SPI_ERROR: | |
350 | bfin_write_SPI_STAT(SPI_ERR_MASK); | |
351 | break; | |
352 | ||
353 | default: | |
354 | break; | |
355 | } | |
356 | ||
357 | pr_debug("IRQ %d:" | |
34e0fc89 MH |
358 | " MASKED PERIPHERAL ERROR INTERRUPT ASSERTED\n", |
359 | irq); | |
1394f032 BW |
360 | } |
361 | } else | |
362 | printk(KERN_ERR | |
363 | "%s : %s : LINE %d :\nIRQ ?: PERIPHERAL ERROR" | |
364 | " INTERRUPT ASSERTED BUT NO SOURCE FOUND\n", | |
b85d858b | 365 | __func__, __FILE__, __LINE__); |
1394f032 | 366 | |
1394f032 BW |
367 | } |
368 | #endif /* BF537_GENERIC_ERROR_INT_DEMUX */ | |
369 | ||
bfd15117 GY |
370 | static inline void bfin_set_irq_handler(unsigned irq, irq_flow_handler_t handle) |
371 | { | |
372 | struct irq_desc *desc = irq_desc + irq; | |
373 | /* May not call generic set_irq_handler() due to spinlock | |
374 | recursion. */ | |
375 | desc->handle_irq = handle; | |
376 | } | |
377 | ||
a055b2b4 | 378 | #if !defined(CONFIG_BF54x) |
1394f032 | 379 | |
397861cd BW |
380 | static unsigned short gpio_enabled[GPIO_BANK_NUM]; |
381 | static unsigned short gpio_edge_triggered[GPIO_BANK_NUM]; | |
1394f032 | 382 | |
affee2b2 | 383 | extern void bfin_gpio_irq_prepare(unsigned gpio); |
6fce6a8d | 384 | |
1394f032 BW |
385 | static void bfin_gpio_ack_irq(unsigned int irq) |
386 | { | |
387 | u16 gpionr = irq - IRQ_PF0; | |
388 | ||
389 | if (gpio_edge_triggered[gpio_bank(gpionr)] & gpio_bit(gpionr)) { | |
390 | set_gpio_data(gpionr, 0); | |
391 | SSYNC(); | |
392 | } | |
393 | } | |
394 | ||
395 | static void bfin_gpio_mask_ack_irq(unsigned int irq) | |
396 | { | |
397 | u16 gpionr = irq - IRQ_PF0; | |
398 | ||
399 | if (gpio_edge_triggered[gpio_bank(gpionr)] & gpio_bit(gpionr)) { | |
400 | set_gpio_data(gpionr, 0); | |
401 | SSYNC(); | |
402 | } | |
403 | ||
404 | set_gpio_maska(gpionr, 0); | |
405 | SSYNC(); | |
406 | } | |
407 | ||
408 | static void bfin_gpio_mask_irq(unsigned int irq) | |
409 | { | |
410 | set_gpio_maska(irq - IRQ_PF0, 0); | |
411 | SSYNC(); | |
412 | } | |
413 | ||
414 | static void bfin_gpio_unmask_irq(unsigned int irq) | |
415 | { | |
416 | set_gpio_maska(irq - IRQ_PF0, 1); | |
417 | SSYNC(); | |
418 | } | |
419 | ||
420 | static unsigned int bfin_gpio_irq_startup(unsigned int irq) | |
421 | { | |
1394f032 BW |
422 | u16 gpionr = irq - IRQ_PF0; |
423 | ||
affee2b2 MH |
424 | if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) |
425 | bfin_gpio_irq_prepare(gpionr); | |
1394f032 BW |
426 | |
427 | gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr); | |
428 | bfin_gpio_unmask_irq(irq); | |
429 | ||
affee2b2 | 430 | return 0; |
1394f032 BW |
431 | } |
432 | ||
433 | static void bfin_gpio_irq_shutdown(unsigned int irq) | |
434 | { | |
435 | bfin_gpio_mask_irq(irq); | |
1394f032 BW |
436 | gpio_enabled[gpio_bank(irq - IRQ_PF0)] &= ~gpio_bit(irq - IRQ_PF0); |
437 | } | |
438 | ||
439 | static int bfin_gpio_irq_type(unsigned int irq, unsigned int type) | |
440 | { | |
1394f032 BW |
441 | u16 gpionr = irq - IRQ_PF0; |
442 | ||
443 | if (type == IRQ_TYPE_PROBE) { | |
444 | /* only probe unenabled GPIO interrupt lines */ | |
445 | if (gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr)) | |
446 | return 0; | |
447 | type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING; | |
448 | } | |
449 | ||
450 | if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING | | |
34e0fc89 | 451 | IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) { |
affee2b2 MH |
452 | if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) |
453 | bfin_gpio_irq_prepare(gpionr); | |
1394f032 BW |
454 | |
455 | gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr); | |
456 | } else { | |
457 | gpio_enabled[gpio_bank(gpionr)] &= ~gpio_bit(gpionr); | |
458 | return 0; | |
459 | } | |
460 | ||
f1bceb47 | 461 | set_gpio_inen(gpionr, 0); |
1394f032 | 462 | set_gpio_dir(gpionr, 0); |
1394f032 BW |
463 | |
464 | if ((type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) | |
465 | == (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) | |
466 | set_gpio_both(gpionr, 1); | |
467 | else | |
468 | set_gpio_both(gpionr, 0); | |
469 | ||
470 | if ((type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW))) | |
471 | set_gpio_polar(gpionr, 1); /* low or falling edge denoted by one */ | |
472 | else | |
473 | set_gpio_polar(gpionr, 0); /* high or rising edge denoted by zero */ | |
474 | ||
f1bceb47 MH |
475 | if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) { |
476 | set_gpio_edge(gpionr, 1); | |
477 | set_gpio_inen(gpionr, 1); | |
478 | gpio_edge_triggered[gpio_bank(gpionr)] |= gpio_bit(gpionr); | |
479 | set_gpio_data(gpionr, 0); | |
480 | ||
481 | } else { | |
482 | set_gpio_edge(gpionr, 0); | |
483 | gpio_edge_triggered[gpio_bank(gpionr)] &= ~gpio_bit(gpionr); | |
484 | set_gpio_inen(gpionr, 1); | |
485 | } | |
486 | ||
1394f032 BW |
487 | SSYNC(); |
488 | ||
489 | if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) | |
bfd15117 | 490 | bfin_set_irq_handler(irq, handle_edge_irq); |
1394f032 | 491 | else |
bfd15117 | 492 | bfin_set_irq_handler(irq, handle_level_irq); |
1394f032 BW |
493 | |
494 | return 0; | |
495 | } | |
496 | ||
cfefe3c6 MH |
497 | #ifdef CONFIG_PM |
498 | int bfin_gpio_set_wake(unsigned int irq, unsigned int state) | |
499 | { | |
500 | unsigned gpio = irq_to_gpio(irq); | |
501 | ||
502 | if (state) | |
503 | gpio_pm_wakeup_request(gpio, PM_WAKE_IGNORE); | |
504 | else | |
505 | gpio_pm_wakeup_free(gpio); | |
506 | ||
507 | return 0; | |
508 | } | |
509 | #endif | |
510 | ||
1394f032 | 511 | static struct irq_chip bfin_gpio_irqchip = { |
763e63c6 | 512 | .name = "GPIO", |
1394f032 BW |
513 | .ack = bfin_gpio_ack_irq, |
514 | .mask = bfin_gpio_mask_irq, | |
515 | .mask_ack = bfin_gpio_mask_ack_irq, | |
516 | .unmask = bfin_gpio_unmask_irq, | |
1f2d1869 MH |
517 | .disable = bfin_gpio_mask_irq, |
518 | .enable = bfin_gpio_unmask_irq, | |
1394f032 BW |
519 | .set_type = bfin_gpio_irq_type, |
520 | .startup = bfin_gpio_irq_startup, | |
cfefe3c6 MH |
521 | .shutdown = bfin_gpio_irq_shutdown, |
522 | #ifdef CONFIG_PM | |
523 | .set_wake = bfin_gpio_set_wake, | |
524 | #endif | |
1394f032 BW |
525 | }; |
526 | ||
2c4f829b MH |
527 | static void bfin_demux_gpio_irq(unsigned int inta_irq, |
528 | struct irq_desc *desc) | |
1394f032 | 529 | { |
2c4f829b MH |
530 | unsigned int i, gpio, mask, irq, search = 0; |
531 | ||
532 | switch (inta_irq) { | |
533 | #if defined(CONFIG_BF53x) | |
534 | case IRQ_PROG_INTA: | |
535 | irq = IRQ_PF0; | |
536 | search = 1; | |
537 | break; | |
538 | # if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)) | |
539 | case IRQ_MAC_RX: | |
540 | irq = IRQ_PH0; | |
541 | break; | |
542 | # endif | |
dc26aec2 MH |
543 | #elif defined(CONFIG_BF538) || defined(CONFIG_BF539) |
544 | case IRQ_PORTF_INTA: | |
545 | irq = IRQ_PF0; | |
546 | break; | |
2f6f4bcd | 547 | #elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x) |
2c4f829b MH |
548 | case IRQ_PORTF_INTA: |
549 | irq = IRQ_PF0; | |
550 | break; | |
551 | case IRQ_PORTG_INTA: | |
552 | irq = IRQ_PG0; | |
553 | break; | |
554 | case IRQ_PORTH_INTA: | |
555 | irq = IRQ_PH0; | |
556 | break; | |
557 | #elif defined(CONFIG_BF561) | |
558 | case IRQ_PROG0_INTA: | |
559 | irq = IRQ_PF0; | |
560 | break; | |
561 | case IRQ_PROG1_INTA: | |
562 | irq = IRQ_PF16; | |
563 | break; | |
564 | case IRQ_PROG2_INTA: | |
565 | irq = IRQ_PF32; | |
566 | break; | |
567 | #endif | |
568 | default: | |
569 | BUG(); | |
570 | return; | |
571 | } | |
572 | ||
573 | if (search) { | |
cfefe3c6 | 574 | for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) { |
2c4f829b MH |
575 | irq += i; |
576 | ||
577 | mask = get_gpiop_data(i) & | |
578 | (gpio_enabled[gpio_bank(i)] & | |
579 | get_gpiop_maska(i)); | |
580 | ||
581 | while (mask) { | |
582 | if (mask & 1) { | |
583 | desc = irq_desc + irq; | |
584 | desc->handle_irq(irq, desc); | |
585 | } | |
586 | irq++; | |
587 | mask >>= 1; | |
1394f032 | 588 | } |
1394f032 | 589 | } |
2c4f829b MH |
590 | } else { |
591 | gpio = irq_to_gpio(irq); | |
592 | mask = get_gpiop_data(gpio) & | |
593 | (gpio_enabled[gpio_bank(gpio)] & | |
594 | get_gpiop_maska(gpio)); | |
595 | ||
596 | do { | |
597 | if (mask & 1) { | |
598 | desc = irq_desc + irq; | |
599 | desc->handle_irq(irq, desc); | |
600 | } | |
601 | irq++; | |
602 | mask >>= 1; | |
603 | } while (mask); | |
1394f032 | 604 | } |
2c4f829b | 605 | |
1394f032 BW |
606 | } |
607 | ||
a055b2b4 | 608 | #else /* CONFIG_BF54x */ |
34e0fc89 MH |
609 | |
610 | #define NR_PINT_SYS_IRQS 4 | |
611 | #define NR_PINT_BITS 32 | |
612 | #define NR_PINTS 160 | |
613 | #define IRQ_NOT_AVAIL 0xFF | |
614 | ||
615 | #define PINT_2_BANK(x) ((x) >> 5) | |
616 | #define PINT_2_BIT(x) ((x) & 0x1F) | |
617 | #define PINT_BIT(x) (1 << (PINT_2_BIT(x))) | |
618 | ||
619 | static unsigned char irq2pint_lut[NR_PINTS]; | |
e3f23000 | 620 | static unsigned char pint2irq_lut[NR_PINT_SYS_IRQS * NR_PINT_BITS]; |
34e0fc89 | 621 | |
8baf560b | 622 | static unsigned int gpio_both_edge_triggered[NR_PINT_SYS_IRQS]; |
397861cd | 623 | static unsigned short gpio_enabled[GPIO_BANK_NUM]; |
8baf560b MH |
624 | |
625 | ||
34e0fc89 MH |
626 | struct pin_int_t { |
627 | unsigned int mask_set; | |
628 | unsigned int mask_clear; | |
629 | unsigned int request; | |
630 | unsigned int assign; | |
631 | unsigned int edge_set; | |
632 | unsigned int edge_clear; | |
633 | unsigned int invert_set; | |
634 | unsigned int invert_clear; | |
635 | unsigned int pinstate; | |
636 | unsigned int latch; | |
637 | }; | |
638 | ||
639 | static struct pin_int_t *pint[NR_PINT_SYS_IRQS] = { | |
640 | (struct pin_int_t *)PINT0_MASK_SET, | |
641 | (struct pin_int_t *)PINT1_MASK_SET, | |
642 | (struct pin_int_t *)PINT2_MASK_SET, | |
643 | (struct pin_int_t *)PINT3_MASK_SET, | |
644 | }; | |
645 | ||
affee2b2 MH |
646 | extern void bfin_gpio_irq_prepare(unsigned gpio); |
647 | ||
464abc5d | 648 | inline unsigned short get_irq_base(u8 bank, u8 bmap) |
34e0fc89 MH |
649 | { |
650 | ||
651 | u16 irq_base; | |
652 | ||
653 | if (bank < 2) { /*PA-PB */ | |
654 | irq_base = IRQ_PA0 + bmap * 16; | |
655 | } else { /*PC-PJ */ | |
656 | irq_base = IRQ_PC0 + bmap * 16; | |
657 | } | |
658 | ||
659 | return irq_base; | |
660 | ||
661 | } | |
662 | ||
663 | /* Whenever PINTx_ASSIGN is altered init_pint_lut() must be executed! */ | |
664 | void init_pint_lut(void) | |
665 | { | |
666 | u16 bank, bit, irq_base, bit_pos; | |
667 | u32 pint_assign; | |
668 | u8 bmap; | |
669 | ||
670 | memset(irq2pint_lut, IRQ_NOT_AVAIL, sizeof(irq2pint_lut)); | |
671 | ||
672 | for (bank = 0; bank < NR_PINT_SYS_IRQS; bank++) { | |
673 | ||
674 | pint_assign = pint[bank]->assign; | |
675 | ||
676 | for (bit = 0; bit < NR_PINT_BITS; bit++) { | |
677 | ||
678 | bmap = (pint_assign >> ((bit / 8) * 8)) & 0xFF; | |
679 | ||
680 | irq_base = get_irq_base(bank, bmap); | |
681 | ||
682 | irq_base += (bit % 8) + ((bit / 8) & 1 ? 8 : 0); | |
683 | bit_pos = bit + bank * NR_PINT_BITS; | |
684 | ||
e3f23000 | 685 | pint2irq_lut[bit_pos] = irq_base - SYS_IRQS; |
34e0fc89 MH |
686 | irq2pint_lut[irq_base - SYS_IRQS] = bit_pos; |
687 | ||
688 | } | |
689 | ||
690 | } | |
691 | ||
692 | } | |
693 | ||
34e0fc89 MH |
694 | static void bfin_gpio_ack_irq(unsigned int irq) |
695 | { | |
696 | u8 pint_val = irq2pint_lut[irq - SYS_IRQS]; | |
8baf560b MH |
697 | u32 pintbit = PINT_BIT(pint_val); |
698 | u8 bank = PINT_2_BANK(pint_val); | |
699 | ||
700 | if (unlikely(gpio_both_edge_triggered[bank] & pintbit)) { | |
701 | if (pint[bank]->invert_set & pintbit) | |
702 | pint[bank]->invert_clear = pintbit; | |
703 | else | |
704 | pint[bank]->invert_set = pintbit; | |
705 | } | |
706 | pint[bank]->request = pintbit; | |
34e0fc89 | 707 | |
34e0fc89 MH |
708 | SSYNC(); |
709 | } | |
710 | ||
711 | static void bfin_gpio_mask_ack_irq(unsigned int irq) | |
712 | { | |
713 | u8 pint_val = irq2pint_lut[irq - SYS_IRQS]; | |
e3f23000 MH |
714 | u32 pintbit = PINT_BIT(pint_val); |
715 | u8 bank = PINT_2_BANK(pint_val); | |
34e0fc89 | 716 | |
8baf560b MH |
717 | if (unlikely(gpio_both_edge_triggered[bank] & pintbit)) { |
718 | if (pint[bank]->invert_set & pintbit) | |
719 | pint[bank]->invert_clear = pintbit; | |
720 | else | |
721 | pint[bank]->invert_set = pintbit; | |
722 | } | |
723 | ||
e3f23000 MH |
724 | pint[bank]->request = pintbit; |
725 | pint[bank]->mask_clear = pintbit; | |
34e0fc89 MH |
726 | SSYNC(); |
727 | } | |
728 | ||
729 | static void bfin_gpio_mask_irq(unsigned int irq) | |
730 | { | |
731 | u8 pint_val = irq2pint_lut[irq - SYS_IRQS]; | |
732 | ||
733 | pint[PINT_2_BANK(pint_val)]->mask_clear = PINT_BIT(pint_val); | |
734 | SSYNC(); | |
735 | } | |
736 | ||
737 | static void bfin_gpio_unmask_irq(unsigned int irq) | |
738 | { | |
739 | u8 pint_val = irq2pint_lut[irq - SYS_IRQS]; | |
e3f23000 MH |
740 | u32 pintbit = PINT_BIT(pint_val); |
741 | u8 bank = PINT_2_BANK(pint_val); | |
34e0fc89 | 742 | |
e3f23000 MH |
743 | pint[bank]->request = pintbit; |
744 | pint[bank]->mask_set = pintbit; | |
34e0fc89 MH |
745 | SSYNC(); |
746 | } | |
747 | ||
748 | static unsigned int bfin_gpio_irq_startup(unsigned int irq) | |
749 | { | |
8baf560b | 750 | u16 gpionr = irq_to_gpio(irq); |
34e0fc89 MH |
751 | u8 pint_val = irq2pint_lut[irq - SYS_IRQS]; |
752 | ||
50e163ce MH |
753 | if (pint_val == IRQ_NOT_AVAIL) { |
754 | printk(KERN_ERR | |
755 | "GPIO IRQ %d :Not in PINT Assign table " | |
756 | "Reconfigure Interrupt to Port Assignemt\n", irq); | |
34e0fc89 | 757 | return -ENODEV; |
50e163ce | 758 | } |
34e0fc89 | 759 | |
affee2b2 MH |
760 | if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) |
761 | bfin_gpio_irq_prepare(gpionr); | |
34e0fc89 MH |
762 | |
763 | gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr); | |
764 | bfin_gpio_unmask_irq(irq); | |
765 | ||
affee2b2 | 766 | return 0; |
34e0fc89 MH |
767 | } |
768 | ||
769 | static void bfin_gpio_irq_shutdown(unsigned int irq) | |
770 | { | |
8baf560b MH |
771 | u16 gpionr = irq_to_gpio(irq); |
772 | ||
34e0fc89 | 773 | bfin_gpio_mask_irq(irq); |
8baf560b | 774 | gpio_enabled[gpio_bank(gpionr)] &= ~gpio_bit(gpionr); |
34e0fc89 MH |
775 | } |
776 | ||
777 | static int bfin_gpio_irq_type(unsigned int irq, unsigned int type) | |
778 | { | |
779 | ||
8baf560b | 780 | u16 gpionr = irq_to_gpio(irq); |
34e0fc89 | 781 | u8 pint_val = irq2pint_lut[irq - SYS_IRQS]; |
e3f23000 MH |
782 | u32 pintbit = PINT_BIT(pint_val); |
783 | u8 bank = PINT_2_BANK(pint_val); | |
34e0fc89 MH |
784 | |
785 | if (pint_val == IRQ_NOT_AVAIL) | |
786 | return -ENODEV; | |
787 | ||
788 | if (type == IRQ_TYPE_PROBE) { | |
789 | /* only probe unenabled GPIO interrupt lines */ | |
790 | if (gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr)) | |
791 | return 0; | |
792 | type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING; | |
793 | } | |
794 | ||
795 | if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING | | |
796 | IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) { | |
affee2b2 MH |
797 | if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) |
798 | bfin_gpio_irq_prepare(gpionr); | |
34e0fc89 MH |
799 | |
800 | gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr); | |
801 | } else { | |
802 | gpio_enabled[gpio_bank(gpionr)] &= ~gpio_bit(gpionr); | |
803 | return 0; | |
804 | } | |
805 | ||
34e0fc89 | 806 | if ((type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW))) |
e3f23000 | 807 | pint[bank]->invert_set = pintbit; /* low or falling edge denoted by one */ |
34e0fc89 | 808 | else |
8baf560b | 809 | pint[bank]->invert_clear = pintbit; /* high or rising edge denoted by zero */ |
34e0fc89 | 810 | |
8baf560b MH |
811 | if ((type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) |
812 | == (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) { | |
34e0fc89 | 813 | |
8baf560b | 814 | gpio_both_edge_triggered[bank] |= pintbit; |
34e0fc89 | 815 | |
8baf560b MH |
816 | if (gpio_get_value(gpionr)) |
817 | pint[bank]->invert_set = pintbit; | |
818 | else | |
819 | pint[bank]->invert_clear = pintbit; | |
820 | } else { | |
821 | gpio_both_edge_triggered[bank] &= ~pintbit; | |
822 | } | |
823 | ||
824 | if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) { | |
825 | pint[bank]->edge_set = pintbit; | |
bfd15117 | 826 | bfin_set_irq_handler(irq, handle_edge_irq); |
8baf560b MH |
827 | } else { |
828 | pint[bank]->edge_clear = pintbit; | |
bfd15117 | 829 | bfin_set_irq_handler(irq, handle_level_irq); |
8baf560b MH |
830 | } |
831 | ||
832 | SSYNC(); | |
34e0fc89 MH |
833 | |
834 | return 0; | |
835 | } | |
836 | ||
cfefe3c6 MH |
837 | #ifdef CONFIG_PM |
838 | u32 pint_saved_masks[NR_PINT_SYS_IRQS]; | |
839 | u32 pint_wakeup_masks[NR_PINT_SYS_IRQS]; | |
840 | ||
841 | int bfin_gpio_set_wake(unsigned int irq, unsigned int state) | |
842 | { | |
843 | u32 pint_irq; | |
844 | u8 pint_val = irq2pint_lut[irq - SYS_IRQS]; | |
845 | u32 bank = PINT_2_BANK(pint_val); | |
846 | u32 pintbit = PINT_BIT(pint_val); | |
847 | ||
848 | switch (bank) { | |
849 | case 0: | |
850 | pint_irq = IRQ_PINT0; | |
851 | break; | |
852 | case 2: | |
853 | pint_irq = IRQ_PINT2; | |
854 | break; | |
855 | case 3: | |
856 | pint_irq = IRQ_PINT3; | |
857 | break; | |
858 | case 1: | |
859 | pint_irq = IRQ_PINT1; | |
860 | break; | |
861 | default: | |
862 | return -EINVAL; | |
863 | } | |
864 | ||
865 | bfin_internal_set_wake(pint_irq, state); | |
866 | ||
867 | if (state) | |
868 | pint_wakeup_masks[bank] |= pintbit; | |
869 | else | |
870 | pint_wakeup_masks[bank] &= ~pintbit; | |
871 | ||
872 | return 0; | |
873 | } | |
874 | ||
875 | u32 bfin_pm_setup(void) | |
876 | { | |
877 | u32 val, i; | |
878 | ||
879 | for (i = 0; i < NR_PINT_SYS_IRQS; i++) { | |
880 | val = pint[i]->mask_clear; | |
881 | pint_saved_masks[i] = val; | |
882 | if (val ^ pint_wakeup_masks[i]) { | |
883 | pint[i]->mask_clear = val; | |
884 | pint[i]->mask_set = pint_wakeup_masks[i]; | |
885 | } | |
886 | } | |
887 | ||
888 | return 0; | |
889 | } | |
890 | ||
891 | void bfin_pm_restore(void) | |
892 | { | |
893 | u32 i, val; | |
894 | ||
895 | for (i = 0; i < NR_PINT_SYS_IRQS; i++) { | |
896 | val = pint_saved_masks[i]; | |
897 | if (val ^ pint_wakeup_masks[i]) { | |
898 | pint[i]->mask_clear = pint[i]->mask_clear; | |
899 | pint[i]->mask_set = val; | |
900 | } | |
901 | } | |
902 | } | |
903 | #endif | |
904 | ||
34e0fc89 | 905 | static struct irq_chip bfin_gpio_irqchip = { |
763e63c6 | 906 | .name = "GPIO", |
34e0fc89 MH |
907 | .ack = bfin_gpio_ack_irq, |
908 | .mask = bfin_gpio_mask_irq, | |
909 | .mask_ack = bfin_gpio_mask_ack_irq, | |
910 | .unmask = bfin_gpio_unmask_irq, | |
1f2d1869 MH |
911 | .disable = bfin_gpio_mask_irq, |
912 | .enable = bfin_gpio_unmask_irq, | |
34e0fc89 MH |
913 | .set_type = bfin_gpio_irq_type, |
914 | .startup = bfin_gpio_irq_startup, | |
cfefe3c6 MH |
915 | .shutdown = bfin_gpio_irq_shutdown, |
916 | #ifdef CONFIG_PM | |
917 | .set_wake = bfin_gpio_set_wake, | |
918 | #endif | |
34e0fc89 MH |
919 | }; |
920 | ||
2c4f829b MH |
921 | static void bfin_demux_gpio_irq(unsigned int inta_irq, |
922 | struct irq_desc *desc) | |
34e0fc89 MH |
923 | { |
924 | u8 bank, pint_val; | |
925 | u32 request, irq; | |
926 | ||
2c4f829b | 927 | switch (inta_irq) { |
34e0fc89 MH |
928 | case IRQ_PINT0: |
929 | bank = 0; | |
930 | break; | |
931 | case IRQ_PINT2: | |
932 | bank = 2; | |
933 | break; | |
934 | case IRQ_PINT3: | |
935 | bank = 3; | |
936 | break; | |
937 | case IRQ_PINT1: | |
938 | bank = 1; | |
939 | break; | |
e3f23000 MH |
940 | default: |
941 | return; | |
34e0fc89 MH |
942 | } |
943 | ||
944 | pint_val = bank * NR_PINT_BITS; | |
945 | ||
946 | request = pint[bank]->request; | |
947 | ||
948 | while (request) { | |
949 | if (request & 1) { | |
e3f23000 MH |
950 | irq = pint2irq_lut[pint_val] + SYS_IRQS; |
951 | desc = irq_desc + irq; | |
34e0fc89 MH |
952 | desc->handle_irq(irq, desc); |
953 | } | |
954 | pint_val++; | |
955 | request >>= 1; | |
956 | } | |
957 | ||
958 | } | |
a055b2b4 | 959 | #endif |
1394f032 | 960 | |
8be80ed3 BS |
961 | void __init init_exception_vectors(void) |
962 | { | |
963 | SSYNC(); | |
964 | ||
f0b5d12f MF |
965 | /* cannot program in software: |
966 | * evt0 - emulation (jtag) | |
967 | * evt1 - reset | |
968 | */ | |
969 | bfin_write_EVT2(evt_nmi); | |
8be80ed3 BS |
970 | bfin_write_EVT3(trap); |
971 | bfin_write_EVT5(evt_ivhw); | |
972 | bfin_write_EVT6(evt_timer); | |
973 | bfin_write_EVT7(evt_evt7); | |
974 | bfin_write_EVT8(evt_evt8); | |
975 | bfin_write_EVT9(evt_evt9); | |
976 | bfin_write_EVT10(evt_evt10); | |
977 | bfin_write_EVT11(evt_evt11); | |
978 | bfin_write_EVT12(evt_evt12); | |
979 | bfin_write_EVT13(evt_evt13); | |
980 | bfin_write_EVT14(evt14_softirq); | |
981 | bfin_write_EVT15(evt_system_call); | |
982 | CSYNC(); | |
983 | } | |
984 | ||
1394f032 BW |
985 | /* |
986 | * This function should be called during kernel startup to initialize | |
987 | * the BFin IRQ handling routines. | |
988 | */ | |
989 | int __init init_arch_irq(void) | |
990 | { | |
991 | int irq; | |
992 | unsigned long ilat = 0; | |
993 | /* Disable all the peripheral intrs - page 4-29 HW Ref manual */ | |
2f6f4bcd BW |
994 | #if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561) \ |
995 | || defined(BF538_FAMILY) || defined(CONFIG_BF51x) | |
24a07a12 RH |
996 | bfin_write_SIC_IMASK0(SIC_UNMASK_ALL); |
997 | bfin_write_SIC_IMASK1(SIC_UNMASK_ALL); | |
a055b2b4 | 998 | # ifdef CONFIG_BF54x |
59003145 | 999 | bfin_write_SIC_IMASK2(SIC_UNMASK_ALL); |
a055b2b4 | 1000 | # endif |
24a07a12 | 1001 | #else |
1394f032 | 1002 | bfin_write_SIC_IMASK(SIC_UNMASK_ALL); |
24a07a12 | 1003 | #endif |
1394f032 BW |
1004 | |
1005 | local_irq_disable(); | |
1006 | ||
d70536ec | 1007 | #if (defined(CONFIG_BF537) || defined(CONFIG_BF536)) |
95a86b5e MF |
1008 | /* Clear EMAC Interrupt Status bits so we can demux it later */ |
1009 | bfin_write_EMAC_SYSTAT(-1); | |
1010 | #endif | |
1011 | ||
a055b2b4 MF |
1012 | #ifdef CONFIG_BF54x |
1013 | # ifdef CONFIG_PINTx_REASSIGN | |
34e0fc89 MH |
1014 | pint[0]->assign = CONFIG_PINT0_ASSIGN; |
1015 | pint[1]->assign = CONFIG_PINT1_ASSIGN; | |
1016 | pint[2]->assign = CONFIG_PINT2_ASSIGN; | |
1017 | pint[3]->assign = CONFIG_PINT3_ASSIGN; | |
a055b2b4 | 1018 | # endif |
34e0fc89 MH |
1019 | /* Whenever PINTx_ASSIGN is altered init_pint_lut() must be executed! */ |
1020 | init_pint_lut(); | |
1021 | #endif | |
1022 | ||
1023 | for (irq = 0; irq <= SYS_IRQS; irq++) { | |
1394f032 BW |
1024 | if (irq <= IRQ_CORETMR) |
1025 | set_irq_chip(irq, &bfin_core_irqchip); | |
1026 | else | |
1027 | set_irq_chip(irq, &bfin_internal_irqchip); | |
1394f032 | 1028 | |
464abc5d | 1029 | switch (irq) { |
59003145 | 1030 | #if defined(CONFIG_BF53x) |
464abc5d | 1031 | case IRQ_PROG_INTA: |
a055b2b4 | 1032 | # if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)) |
464abc5d | 1033 | case IRQ_MAC_RX: |
a055b2b4 | 1034 | # endif |
59003145 | 1035 | #elif defined(CONFIG_BF54x) |
464abc5d MH |
1036 | case IRQ_PINT0: |
1037 | case IRQ_PINT1: | |
1038 | case IRQ_PINT2: | |
1039 | case IRQ_PINT3: | |
2f6f4bcd | 1040 | #elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x) |
464abc5d MH |
1041 | case IRQ_PORTF_INTA: |
1042 | case IRQ_PORTG_INTA: | |
1043 | case IRQ_PORTH_INTA: | |
2c4f829b | 1044 | #elif defined(CONFIG_BF561) |
464abc5d MH |
1045 | case IRQ_PROG0_INTA: |
1046 | case IRQ_PROG1_INTA: | |
1047 | case IRQ_PROG2_INTA: | |
dc26aec2 MH |
1048 | #elif defined(CONFIG_BF538) || defined(CONFIG_BF539) |
1049 | case IRQ_PORTF_INTA: | |
1394f032 | 1050 | #endif |
dc26aec2 | 1051 | |
464abc5d MH |
1052 | set_irq_chained_handler(irq, |
1053 | bfin_demux_gpio_irq); | |
1054 | break; | |
1394f032 | 1055 | #ifdef BF537_GENERIC_ERROR_INT_DEMUX |
464abc5d | 1056 | case IRQ_GENERIC_ERROR: |
1394f032 | 1057 | set_irq_handler(irq, bfin_demux_error_irq); |
464abc5d MH |
1058 | |
1059 | break; | |
1394f032 | 1060 | #endif |
464abc5d MH |
1061 | default: |
1062 | set_irq_handler(irq, handle_simple_irq); | |
1063 | break; | |
1064 | } | |
1394f032 | 1065 | } |
464abc5d | 1066 | |
1394f032 | 1067 | #ifdef BF537_GENERIC_ERROR_INT_DEMUX |
464abc5d MH |
1068 | for (irq = IRQ_PPI_ERROR; irq <= IRQ_UART1_ERROR; irq++) |
1069 | set_irq_chip_and_handler(irq, &bfin_generic_error_irqchip, | |
1070 | handle_level_irq); | |
1394f032 BW |
1071 | #endif |
1072 | ||
464abc5d MH |
1073 | /* if configured as edge, then will be changed to do_edge_IRQ */ |
1074 | for (irq = GPIO_IRQ_BASE; irq < NR_IRQS; irq++) | |
1075 | set_irq_chip_and_handler(irq, &bfin_gpio_irqchip, | |
1076 | handle_level_irq); | |
2c4f829b | 1077 | |
a055b2b4 | 1078 | |
1394f032 BW |
1079 | bfin_write_IMASK(0); |
1080 | CSYNC(); | |
1081 | ilat = bfin_read_ILAT(); | |
1082 | CSYNC(); | |
1083 | bfin_write_ILAT(ilat); | |
1084 | CSYNC(); | |
1085 | ||
34e0fc89 | 1086 | printk(KERN_INFO "Configuring Blackfin Priority Driven Interrupts\n"); |
1394f032 BW |
1087 | /* IMASK=xxx is equivalent to STI xx or irq_flags=xx, |
1088 | * local_irq_enable() | |
1089 | */ | |
1090 | program_IAR(); | |
1091 | /* Therefore it's better to setup IARs before interrupts enabled */ | |
1092 | search_IAR(); | |
1093 | ||
1094 | /* Enable interrupts IVG7-15 */ | |
1095 | irq_flags = irq_flags | IMASK_IVG15 | | |
1096 | IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 | | |
34e0fc89 | 1097 | IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW; |
1394f032 | 1098 | |
2f6f4bcd BW |
1099 | #if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561) \ |
1100 | || defined(BF538_FAMILY) || defined(CONFIG_BF51x) | |
56f5f590 | 1101 | bfin_write_SIC_IWR0(IWR_DISABLE_ALL); |
2f6f4bcd BW |
1102 | #if defined(CONFIG_BF52x) || defined(CONFIG_BF51x) |
1103 | /* BF52x/BF51x system reset does not properly reset SIC_IWR1 which | |
55546ac4 MH |
1104 | * will screw up the bootrom as it relies on MDMA0/1 waking it |
1105 | * up from IDLE instructions. See this report for more info: | |
1106 | * http://blackfin.uclinux.org/gf/tracker/4323 | |
1107 | */ | |
1108 | bfin_write_SIC_IWR1(IWR_ENABLE(10) | IWR_ENABLE(11)); | |
1109 | #else | |
56f5f590 | 1110 | bfin_write_SIC_IWR1(IWR_DISABLE_ALL); |
55546ac4 | 1111 | #endif |
fe9ec9b9 | 1112 | # ifdef CONFIG_BF54x |
56f5f590 | 1113 | bfin_write_SIC_IWR2(IWR_DISABLE_ALL); |
fe9ec9b9 MH |
1114 | # endif |
1115 | #else | |
56f5f590 | 1116 | bfin_write_SIC_IWR(IWR_DISABLE_ALL); |
fe9ec9b9 MH |
1117 | #endif |
1118 | ||
1394f032 BW |
1119 | return 0; |
1120 | } | |
1121 | ||
1122 | #ifdef CONFIG_DO_IRQ_L1 | |
a055b2b4 | 1123 | __attribute__((l1_text)) |
1394f032 | 1124 | #endif |
1394f032 BW |
1125 | void do_irq(int vec, struct pt_regs *fp) |
1126 | { | |
1127 | if (vec == EVT_IVTMR_P) { | |
1128 | vec = IRQ_CORETMR; | |
1129 | } else { | |
1130 | struct ivgx *ivg = ivg7_13[vec - IVG7].ifirst; | |
1131 | struct ivgx *ivg_stop = ivg7_13[vec - IVG7].istop; | |
2f6f4bcd BW |
1132 | #if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561) \ |
1133 | || defined(BF538_FAMILY) || defined(CONFIG_BF51x) | |
24a07a12 | 1134 | unsigned long sic_status[3]; |
1394f032 | 1135 | |
4fb45241 MH |
1136 | sic_status[0] = bfin_read_SIC_ISR0() & bfin_read_SIC_IMASK0(); |
1137 | sic_status[1] = bfin_read_SIC_ISR1() & bfin_read_SIC_IMASK1(); | |
59003145 | 1138 | #ifdef CONFIG_BF54x |
4fb45241 | 1139 | sic_status[2] = bfin_read_SIC_ISR2() & bfin_read_SIC_IMASK2(); |
59003145 | 1140 | #endif |
1f83b8f1 | 1141 | for (;; ivg++) { |
24a07a12 RH |
1142 | if (ivg >= ivg_stop) { |
1143 | atomic_inc(&num_spurious); | |
1144 | return; | |
1145 | } | |
34e0fc89 | 1146 | if (sic_status[(ivg->irqno - IVG7) / 32] & ivg->isrflag) |
24a07a12 RH |
1147 | break; |
1148 | } | |
1149 | #else | |
1150 | unsigned long sic_status; | |
464abc5d | 1151 | |
1394f032 BW |
1152 | sic_status = bfin_read_SIC_IMASK() & bfin_read_SIC_ISR(); |
1153 | ||
1154 | for (;; ivg++) { | |
1155 | if (ivg >= ivg_stop) { | |
1156 | atomic_inc(&num_spurious); | |
1157 | return; | |
1158 | } else if (sic_status & ivg->isrflag) | |
1159 | break; | |
1160 | } | |
24a07a12 | 1161 | #endif |
1394f032 BW |
1162 | vec = ivg->irqno; |
1163 | } | |
1164 | asm_do_IRQ(vec, fp); | |
1394f032 | 1165 | } |