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