Commit | Line | Data |
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5b3b1688 DD |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
2253e0b9 | 6 | * Copyright (C) 2004-2016 Cavium, Inc. |
5b3b1688 | 7 | */ |
0c326387 | 8 | |
64b139f9 | 9 | #include <linux/of_address.h> |
5b3b1688 | 10 | #include <linux/interrupt.h> |
a0c16582 | 11 | #include <linux/irqdomain.h> |
0c326387 | 12 | #include <linux/bitops.h> |
64b139f9 | 13 | #include <linux/of_irq.h> |
0c326387 | 14 | #include <linux/percpu.h> |
a0c16582 | 15 | #include <linux/slab.h> |
0c326387 | 16 | #include <linux/irq.h> |
631330f5 | 17 | #include <linux/smp.h> |
a0c16582 | 18 | #include <linux/of.h> |
5b3b1688 DD |
19 | |
20 | #include <asm/octeon/octeon.h> | |
88fd8589 | 21 | #include <asm/octeon/cvmx-ciu2-defs.h> |
5b3b1688 | 22 | |
0c326387 DD |
23 | static DEFINE_PER_CPU(unsigned long, octeon_irq_ciu0_en_mirror); |
24 | static DEFINE_PER_CPU(unsigned long, octeon_irq_ciu1_en_mirror); | |
1a7e68f2 | 25 | static DEFINE_PER_CPU(raw_spinlock_t, octeon_irq_ciu_spinlock); |
0c326387 | 26 | |
64b139f9 DD |
27 | struct octeon_irq_ciu_domain_data { |
28 | int num_sum; /* number of sum registers (2 or 3). */ | |
29 | }; | |
30 | ||
2253e0b9 | 31 | static __read_mostly int octeon_irq_ciu_to_irq[8][64]; |
0c326387 | 32 | |
64b139f9 DD |
33 | struct octeon_ciu_chip_data { |
34 | union { | |
35 | struct { /* only used for ciu3 */ | |
36 | u64 ciu3_addr; | |
37 | unsigned int intsn; | |
38 | }; | |
39 | struct { /* only used for ciu/ciu2 */ | |
40 | u8 line; | |
41 | u8 bit; | |
42 | u8 gpio_line; | |
43 | }; | |
44 | }; | |
45 | int current_cpu; /* Next CPU expected to take this irq */ | |
0c326387 DD |
46 | }; |
47 | ||
48 | struct octeon_core_chip_data { | |
49 | struct mutex core_irq_mutex; | |
50 | bool current_en; | |
51 | bool desired_en; | |
52 | u8 bit; | |
53 | }; | |
54 | ||
55 | #define MIPS_CORE_IRQ_LINES 8 | |
56 | ||
57 | static struct octeon_core_chip_data octeon_irq_core_chip_data[MIPS_CORE_IRQ_LINES]; | |
58 | ||
64b139f9 DD |
59 | static int octeon_irq_set_ciu_mapping(int irq, int line, int bit, int gpio_line, |
60 | struct irq_chip *chip, | |
61 | irq_flow_handler_t handler) | |
0c326387 | 62 | { |
64b139f9 DD |
63 | struct octeon_ciu_chip_data *cd; |
64 | ||
65 | cd = kzalloc(sizeof(*cd), GFP_KERNEL); | |
66 | if (!cd) | |
67 | return -ENOMEM; | |
0c326387 DD |
68 | |
69 | irq_set_chip_and_handler(irq, chip, handler); | |
70 | ||
64b139f9 DD |
71 | cd->line = line; |
72 | cd->bit = bit; | |
73 | cd->gpio_line = gpio_line; | |
0c326387 | 74 | |
64b139f9 | 75 | irq_set_chip_data(irq, cd); |
0c326387 | 76 | octeon_irq_ciu_to_irq[line][bit] = irq; |
64b139f9 DD |
77 | return 0; |
78 | } | |
79 | ||
80 | static void octeon_irq_free_cd(struct irq_domain *d, unsigned int irq) | |
81 | { | |
82 | struct irq_data *data = irq_get_irq_data(irq); | |
83 | struct octeon_ciu_chip_data *cd = irq_data_get_irq_chip_data(data); | |
84 | ||
85 | irq_set_chip_data(irq, NULL); | |
86 | kfree(cd); | |
0c326387 DD |
87 | } |
88 | ||
64b139f9 DD |
89 | static int octeon_irq_force_ciu_mapping(struct irq_domain *domain, |
90 | int irq, int line, int bit) | |
87161ccd | 91 | { |
64b139f9 | 92 | return irq_domain_associate(domain, irq, line << 6 | bit); |
87161ccd DD |
93 | } |
94 | ||
cd847b78 DD |
95 | static int octeon_coreid_for_cpu(int cpu) |
96 | { | |
97 | #ifdef CONFIG_SMP | |
98 | return cpu_logical_map(cpu); | |
99 | #else | |
100 | return cvmx_get_core_num(); | |
101 | #endif | |
102 | } | |
103 | ||
0c326387 DD |
104 | static int octeon_cpu_for_coreid(int coreid) |
105 | { | |
106 | #ifdef CONFIG_SMP | |
107 | return cpu_number_map(coreid); | |
108 | #else | |
109 | return smp_processor_id(); | |
110 | #endif | |
111 | } | |
112 | ||
113 | static void octeon_irq_core_ack(struct irq_data *data) | |
5b3b1688 | 114 | { |
0c326387 DD |
115 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
116 | unsigned int bit = cd->bit; | |
117 | ||
5b3b1688 DD |
118 | /* |
119 | * We don't need to disable IRQs to make these atomic since | |
120 | * they are already disabled earlier in the low level | |
121 | * interrupt code. | |
122 | */ | |
123 | clear_c0_status(0x100 << bit); | |
124 | /* The two user interrupts must be cleared manually. */ | |
125 | if (bit < 2) | |
126 | clear_c0_cause(0x100 << bit); | |
127 | } | |
128 | ||
0c326387 | 129 | static void octeon_irq_core_eoi(struct irq_data *data) |
5b3b1688 | 130 | { |
0c326387 DD |
131 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
132 | ||
5b3b1688 DD |
133 | /* |
134 | * We don't need to disable IRQs to make these atomic since | |
135 | * they are already disabled earlier in the low level | |
136 | * interrupt code. | |
137 | */ | |
0c326387 | 138 | set_c0_status(0x100 << cd->bit); |
5b3b1688 DD |
139 | } |
140 | ||
0c326387 | 141 | static void octeon_irq_core_set_enable_local(void *arg) |
5b3b1688 | 142 | { |
0c326387 DD |
143 | struct irq_data *data = arg; |
144 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); | |
145 | unsigned int mask = 0x100 << cd->bit; | |
5b3b1688 DD |
146 | |
147 | /* | |
0c326387 | 148 | * Interrupts are already disabled, so these are atomic. |
5b3b1688 | 149 | */ |
0c326387 DD |
150 | if (cd->desired_en) |
151 | set_c0_status(mask); | |
152 | else | |
153 | clear_c0_status(mask); | |
154 | ||
5b3b1688 DD |
155 | } |
156 | ||
0c326387 | 157 | static void octeon_irq_core_disable(struct irq_data *data) |
5b3b1688 | 158 | { |
0c326387 DD |
159 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
160 | cd->desired_en = false; | |
5b3b1688 DD |
161 | } |
162 | ||
0c326387 | 163 | static void octeon_irq_core_enable(struct irq_data *data) |
5b3b1688 | 164 | { |
0c326387 DD |
165 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
166 | cd->desired_en = true; | |
5b3b1688 DD |
167 | } |
168 | ||
0c326387 DD |
169 | static void octeon_irq_core_bus_lock(struct irq_data *data) |
170 | { | |
171 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); | |
5b3b1688 | 172 | |
0c326387 DD |
173 | mutex_lock(&cd->core_irq_mutex); |
174 | } | |
5b3b1688 | 175 | |
0c326387 | 176 | static void octeon_irq_core_bus_sync_unlock(struct irq_data *data) |
5b3b1688 | 177 | { |
0c326387 DD |
178 | struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data); |
179 | ||
180 | if (cd->desired_en != cd->current_en) { | |
181 | on_each_cpu(octeon_irq_core_set_enable_local, data, 1); | |
182 | ||
183 | cd->current_en = cd->desired_en; | |
5aae1fd4 DD |
184 | } |
185 | ||
0c326387 | 186 | mutex_unlock(&cd->core_irq_mutex); |
5b3b1688 DD |
187 | } |
188 | ||
0c326387 DD |
189 | static struct irq_chip octeon_irq_chip_core = { |
190 | .name = "Core", | |
191 | .irq_enable = octeon_irq_core_enable, | |
192 | .irq_disable = octeon_irq_core_disable, | |
193 | .irq_ack = octeon_irq_core_ack, | |
194 | .irq_eoi = octeon_irq_core_eoi, | |
195 | .irq_bus_lock = octeon_irq_core_bus_lock, | |
196 | .irq_bus_sync_unlock = octeon_irq_core_bus_sync_unlock, | |
197 | ||
5b7cd6fd TG |
198 | .irq_cpu_online = octeon_irq_core_eoi, |
199 | .irq_cpu_offline = octeon_irq_core_ack, | |
200 | .flags = IRQCHIP_ONOFFLINE_ENABLED, | |
0c326387 DD |
201 | }; |
202 | ||
203 | static void __init octeon_irq_init_core(void) | |
204 | { | |
205 | int i; | |
206 | int irq; | |
207 | struct octeon_core_chip_data *cd; | |
208 | ||
209 | for (i = 0; i < MIPS_CORE_IRQ_LINES; i++) { | |
210 | cd = &octeon_irq_core_chip_data[i]; | |
211 | cd->current_en = false; | |
212 | cd->desired_en = false; | |
213 | cd->bit = i; | |
214 | mutex_init(&cd->core_irq_mutex); | |
215 | ||
216 | irq = OCTEON_IRQ_SW0 + i; | |
87161ccd DD |
217 | irq_set_chip_data(irq, cd); |
218 | irq_set_chip_and_handler(irq, &octeon_irq_chip_core, | |
219 | handle_percpu_irq); | |
0c326387 DD |
220 | } |
221 | } | |
222 | ||
223 | static int next_cpu_for_irq(struct irq_data *data) | |
5aae1fd4 DD |
224 | { |
225 | ||
226 | #ifdef CONFIG_SMP | |
0c326387 | 227 | int cpu; |
5c159422 JL |
228 | struct cpumask *mask = irq_data_get_affinity_mask(data); |
229 | int weight = cpumask_weight(mask); | |
64b139f9 | 230 | struct octeon_ciu_chip_data *cd = irq_data_get_irq_chip_data(data); |
5aae1fd4 DD |
231 | |
232 | if (weight > 1) { | |
64b139f9 | 233 | cpu = cd->current_cpu; |
5aae1fd4 | 234 | for (;;) { |
5c159422 | 235 | cpu = cpumask_next(cpu, mask); |
5aae1fd4 DD |
236 | if (cpu >= nr_cpu_ids) { |
237 | cpu = -1; | |
238 | continue; | |
239 | } else if (cpumask_test_cpu(cpu, cpu_online_mask)) { | |
240 | break; | |
241 | } | |
242 | } | |
5aae1fd4 | 243 | } else if (weight == 1) { |
5c159422 | 244 | cpu = cpumask_first(mask); |
5aae1fd4 | 245 | } else { |
0c326387 | 246 | cpu = smp_processor_id(); |
5aae1fd4 | 247 | } |
64b139f9 | 248 | cd->current_cpu = cpu; |
0c326387 | 249 | return cpu; |
5aae1fd4 | 250 | #else |
0c326387 | 251 | return smp_processor_id(); |
5aae1fd4 DD |
252 | #endif |
253 | } | |
254 | ||
0c326387 | 255 | static void octeon_irq_ciu_enable(struct irq_data *data) |
5aae1fd4 | 256 | { |
0c326387 DD |
257 | int cpu = next_cpu_for_irq(data); |
258 | int coreid = octeon_coreid_for_cpu(cpu); | |
259 | unsigned long *pen; | |
5aae1fd4 | 260 | unsigned long flags; |
64b139f9 | 261 | struct octeon_ciu_chip_data *cd; |
1a7e68f2 | 262 | raw_spinlock_t *lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); |
0c326387 | 263 | |
64b139f9 | 264 | cd = irq_data_get_irq_chip_data(data); |
5aae1fd4 | 265 | |
1a7e68f2 | 266 | raw_spin_lock_irqsave(lock, flags); |
64b139f9 | 267 | if (cd->line == 0) { |
0c326387 | 268 | pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); |
64b139f9 | 269 | __set_bit(cd->bit, pen); |
1a7e68f2 DD |
270 | /* |
271 | * Must be visible to octeon_irq_ip{2,3}_ciu() before | |
272 | * enabling the irq. | |
273 | */ | |
274 | wmb(); | |
0c326387 | 275 | cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen); |
0c326387 | 276 | } else { |
0c326387 | 277 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
64b139f9 | 278 | __set_bit(cd->bit, pen); |
1a7e68f2 DD |
279 | /* |
280 | * Must be visible to octeon_irq_ip{2,3}_ciu() before | |
281 | * enabling the irq. | |
282 | */ | |
283 | wmb(); | |
0c326387 | 284 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
0c326387 | 285 | } |
1a7e68f2 | 286 | raw_spin_unlock_irqrestore(lock, flags); |
5aae1fd4 DD |
287 | } |
288 | ||
0c326387 DD |
289 | static void octeon_irq_ciu_enable_local(struct irq_data *data) |
290 | { | |
291 | unsigned long *pen; | |
292 | unsigned long flags; | |
64b139f9 | 293 | struct octeon_ciu_chip_data *cd; |
35898716 | 294 | raw_spinlock_t *lock = this_cpu_ptr(&octeon_irq_ciu_spinlock); |
0c326387 | 295 | |
64b139f9 | 296 | cd = irq_data_get_irq_chip_data(data); |
0c326387 | 297 | |
1a7e68f2 | 298 | raw_spin_lock_irqsave(lock, flags); |
64b139f9 | 299 | if (cd->line == 0) { |
35898716 | 300 | pen = this_cpu_ptr(&octeon_irq_ciu0_en_mirror); |
64b139f9 | 301 | __set_bit(cd->bit, pen); |
1a7e68f2 DD |
302 | /* |
303 | * Must be visible to octeon_irq_ip{2,3}_ciu() before | |
304 | * enabling the irq. | |
305 | */ | |
306 | wmb(); | |
0c326387 | 307 | cvmx_write_csr(CVMX_CIU_INTX_EN0(cvmx_get_core_num() * 2), *pen); |
0c326387 | 308 | } else { |
35898716 | 309 | pen = this_cpu_ptr(&octeon_irq_ciu1_en_mirror); |
64b139f9 | 310 | __set_bit(cd->bit, pen); |
1a7e68f2 DD |
311 | /* |
312 | * Must be visible to octeon_irq_ip{2,3}_ciu() before | |
313 | * enabling the irq. | |
314 | */ | |
315 | wmb(); | |
0c326387 | 316 | cvmx_write_csr(CVMX_CIU_INTX_EN1(cvmx_get_core_num() * 2 + 1), *pen); |
0c326387 | 317 | } |
1a7e68f2 | 318 | raw_spin_unlock_irqrestore(lock, flags); |
0c326387 DD |
319 | } |
320 | ||
321 | static void octeon_irq_ciu_disable_local(struct irq_data *data) | |
322 | { | |
323 | unsigned long *pen; | |
324 | unsigned long flags; | |
64b139f9 | 325 | struct octeon_ciu_chip_data *cd; |
35898716 | 326 | raw_spinlock_t *lock = this_cpu_ptr(&octeon_irq_ciu_spinlock); |
0c326387 | 327 | |
64b139f9 | 328 | cd = irq_data_get_irq_chip_data(data); |
0c326387 | 329 | |
1a7e68f2 | 330 | raw_spin_lock_irqsave(lock, flags); |
64b139f9 | 331 | if (cd->line == 0) { |
35898716 | 332 | pen = this_cpu_ptr(&octeon_irq_ciu0_en_mirror); |
64b139f9 | 333 | __clear_bit(cd->bit, pen); |
1a7e68f2 DD |
334 | /* |
335 | * Must be visible to octeon_irq_ip{2,3}_ciu() before | |
336 | * enabling the irq. | |
337 | */ | |
338 | wmb(); | |
0c326387 | 339 | cvmx_write_csr(CVMX_CIU_INTX_EN0(cvmx_get_core_num() * 2), *pen); |
0c326387 | 340 | } else { |
35898716 | 341 | pen = this_cpu_ptr(&octeon_irq_ciu1_en_mirror); |
64b139f9 | 342 | __clear_bit(cd->bit, pen); |
1a7e68f2 DD |
343 | /* |
344 | * Must be visible to octeon_irq_ip{2,3}_ciu() before | |
345 | * enabling the irq. | |
346 | */ | |
347 | wmb(); | |
0c326387 | 348 | cvmx_write_csr(CVMX_CIU_INTX_EN1(cvmx_get_core_num() * 2 + 1), *pen); |
0c326387 | 349 | } |
1a7e68f2 | 350 | raw_spin_unlock_irqrestore(lock, flags); |
0c326387 DD |
351 | } |
352 | ||
353 | static void octeon_irq_ciu_disable_all(struct irq_data *data) | |
5b3b1688 | 354 | { |
5b3b1688 | 355 | unsigned long flags; |
0c326387 DD |
356 | unsigned long *pen; |
357 | int cpu; | |
64b139f9 | 358 | struct octeon_ciu_chip_data *cd; |
1a7e68f2 | 359 | raw_spinlock_t *lock; |
5b3b1688 | 360 | |
64b139f9 | 361 | cd = irq_data_get_irq_chip_data(data); |
0c326387 | 362 | |
1a7e68f2 DD |
363 | for_each_online_cpu(cpu) { |
364 | int coreid = octeon_coreid_for_cpu(cpu); | |
365 | lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); | |
64b139f9 | 366 | if (cd->line == 0) |
0c326387 | 367 | pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); |
1a7e68f2 | 368 | else |
0c326387 | 369 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
1a7e68f2 DD |
370 | |
371 | raw_spin_lock_irqsave(lock, flags); | |
64b139f9 | 372 | __clear_bit(cd->bit, pen); |
1a7e68f2 DD |
373 | /* |
374 | * Must be visible to octeon_irq_ip{2,3}_ciu() before | |
375 | * enabling the irq. | |
376 | */ | |
377 | wmb(); | |
64b139f9 | 378 | if (cd->line == 0) |
1a7e68f2 DD |
379 | cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen); |
380 | else | |
0c326387 | 381 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
1a7e68f2 | 382 | raw_spin_unlock_irqrestore(lock, flags); |
0c326387 | 383 | } |
5b3b1688 DD |
384 | } |
385 | ||
0c326387 | 386 | static void octeon_irq_ciu_enable_all(struct irq_data *data) |
5b3b1688 | 387 | { |
5b3b1688 | 388 | unsigned long flags; |
0c326387 | 389 | unsigned long *pen; |
5b3b1688 | 390 | int cpu; |
64b139f9 | 391 | struct octeon_ciu_chip_data *cd; |
1a7e68f2 | 392 | raw_spinlock_t *lock; |
0c326387 | 393 | |
64b139f9 | 394 | cd = irq_data_get_irq_chip_data(data); |
0c326387 | 395 | |
1a7e68f2 DD |
396 | for_each_online_cpu(cpu) { |
397 | int coreid = octeon_coreid_for_cpu(cpu); | |
398 | lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); | |
64b139f9 | 399 | if (cd->line == 0) |
0c326387 | 400 | pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); |
1a7e68f2 | 401 | else |
0c326387 | 402 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
1a7e68f2 DD |
403 | |
404 | raw_spin_lock_irqsave(lock, flags); | |
64b139f9 | 405 | __set_bit(cd->bit, pen); |
1a7e68f2 DD |
406 | /* |
407 | * Must be visible to octeon_irq_ip{2,3}_ciu() before | |
408 | * enabling the irq. | |
409 | */ | |
410 | wmb(); | |
64b139f9 | 411 | if (cd->line == 0) |
1a7e68f2 DD |
412 | cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen); |
413 | else | |
0c326387 | 414 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
1a7e68f2 | 415 | raw_spin_unlock_irqrestore(lock, flags); |
5b3b1688 | 416 | } |
cd847b78 DD |
417 | } |
418 | ||
419 | /* | |
5aae1fd4 DD |
420 | * Enable the irq on the next core in the affinity set for chips that |
421 | * have the EN*_W1{S,C} registers. | |
cd847b78 | 422 | */ |
0c326387 | 423 | static void octeon_irq_ciu_enable_v2(struct irq_data *data) |
cd847b78 | 424 | { |
0c326387 DD |
425 | u64 mask; |
426 | int cpu = next_cpu_for_irq(data); | |
64b139f9 | 427 | struct octeon_ciu_chip_data *cd; |
cd847b78 | 428 | |
64b139f9 DD |
429 | cd = irq_data_get_irq_chip_data(data); |
430 | mask = 1ull << (cd->bit); | |
0c326387 DD |
431 | |
432 | /* | |
433 | * Called under the desc lock, so these should never get out | |
434 | * of sync. | |
435 | */ | |
64b139f9 | 436 | if (cd->line == 0) { |
0c326387 | 437 | int index = octeon_coreid_for_cpu(cpu) * 2; |
64b139f9 | 438 | set_bit(cd->bit, &per_cpu(octeon_irq_ciu0_en_mirror, cpu)); |
5aae1fd4 | 439 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask); |
0c326387 DD |
440 | } else { |
441 | int index = octeon_coreid_for_cpu(cpu) * 2 + 1; | |
64b139f9 | 442 | set_bit(cd->bit, &per_cpu(octeon_irq_ciu1_en_mirror, cpu)); |
0c326387 | 443 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask); |
5aae1fd4 | 444 | } |
cd847b78 DD |
445 | } |
446 | ||
64b139f9 DD |
447 | /* |
448 | * Enable the irq in the sum2 registers. | |
449 | */ | |
450 | static void octeon_irq_ciu_enable_sum2(struct irq_data *data) | |
451 | { | |
452 | u64 mask; | |
453 | int cpu = next_cpu_for_irq(data); | |
454 | int index = octeon_coreid_for_cpu(cpu); | |
455 | struct octeon_ciu_chip_data *cd; | |
456 | ||
457 | cd = irq_data_get_irq_chip_data(data); | |
458 | mask = 1ull << (cd->bit); | |
459 | ||
460 | cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1S(index), mask); | |
461 | } | |
462 | ||
463 | /* | |
464 | * Disable the irq in the sum2 registers. | |
465 | */ | |
466 | static void octeon_irq_ciu_disable_local_sum2(struct irq_data *data) | |
467 | { | |
468 | u64 mask; | |
469 | int cpu = next_cpu_for_irq(data); | |
470 | int index = octeon_coreid_for_cpu(cpu); | |
471 | struct octeon_ciu_chip_data *cd; | |
472 | ||
473 | cd = irq_data_get_irq_chip_data(data); | |
474 | mask = 1ull << (cd->bit); | |
475 | ||
476 | cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1C(index), mask); | |
477 | } | |
478 | ||
479 | static void octeon_irq_ciu_ack_sum2(struct irq_data *data) | |
480 | { | |
481 | u64 mask; | |
482 | int cpu = next_cpu_for_irq(data); | |
483 | int index = octeon_coreid_for_cpu(cpu); | |
484 | struct octeon_ciu_chip_data *cd; | |
485 | ||
486 | cd = irq_data_get_irq_chip_data(data); | |
487 | mask = 1ull << (cd->bit); | |
488 | ||
489 | cvmx_write_csr(CVMX_CIU_SUM2_PPX_IP4(index), mask); | |
490 | } | |
491 | ||
492 | static void octeon_irq_ciu_disable_all_sum2(struct irq_data *data) | |
493 | { | |
494 | int cpu; | |
495 | struct octeon_ciu_chip_data *cd; | |
496 | u64 mask; | |
497 | ||
498 | cd = irq_data_get_irq_chip_data(data); | |
499 | mask = 1ull << (cd->bit); | |
500 | ||
501 | for_each_online_cpu(cpu) { | |
502 | int coreid = octeon_coreid_for_cpu(cpu); | |
503 | ||
504 | cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1C(coreid), mask); | |
505 | } | |
506 | } | |
507 | ||
cd847b78 | 508 | /* |
5aae1fd4 DD |
509 | * Enable the irq on the current CPU for chips that |
510 | * have the EN*_W1{S,C} registers. | |
cd847b78 | 511 | */ |
0c326387 | 512 | static void octeon_irq_ciu_enable_local_v2(struct irq_data *data) |
cd847b78 | 513 | { |
0c326387 | 514 | u64 mask; |
64b139f9 | 515 | struct octeon_ciu_chip_data *cd; |
0c326387 | 516 | |
64b139f9 DD |
517 | cd = irq_data_get_irq_chip_data(data); |
518 | mask = 1ull << (cd->bit); | |
cd847b78 | 519 | |
64b139f9 | 520 | if (cd->line == 0) { |
0c326387 | 521 | int index = cvmx_get_core_num() * 2; |
64b139f9 | 522 | set_bit(cd->bit, this_cpu_ptr(&octeon_irq_ciu0_en_mirror)); |
0c326387 DD |
523 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask); |
524 | } else { | |
525 | int index = cvmx_get_core_num() * 2 + 1; | |
64b139f9 | 526 | set_bit(cd->bit, this_cpu_ptr(&octeon_irq_ciu1_en_mirror)); |
0c326387 DD |
527 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask); |
528 | } | |
529 | } | |
530 | ||
531 | static void octeon_irq_ciu_disable_local_v2(struct irq_data *data) | |
532 | { | |
533 | u64 mask; | |
64b139f9 | 534 | struct octeon_ciu_chip_data *cd; |
0c326387 | 535 | |
64b139f9 DD |
536 | cd = irq_data_get_irq_chip_data(data); |
537 | mask = 1ull << (cd->bit); | |
0c326387 | 538 | |
64b139f9 | 539 | if (cd->line == 0) { |
0c326387 | 540 | int index = cvmx_get_core_num() * 2; |
64b139f9 | 541 | clear_bit(cd->bit, this_cpu_ptr(&octeon_irq_ciu0_en_mirror)); |
0c326387 DD |
542 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1C(index), mask); |
543 | } else { | |
544 | int index = cvmx_get_core_num() * 2 + 1; | |
64b139f9 | 545 | clear_bit(cd->bit, this_cpu_ptr(&octeon_irq_ciu1_en_mirror)); |
0c326387 DD |
546 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1C(index), mask); |
547 | } | |
cd847b78 DD |
548 | } |
549 | ||
86568dc4 | 550 | /* |
0c326387 | 551 | * Write to the W1C bit in CVMX_CIU_INTX_SUM0 to clear the irq. |
86568dc4 | 552 | */ |
0c326387 DD |
553 | static void octeon_irq_ciu_ack(struct irq_data *data) |
554 | { | |
555 | u64 mask; | |
64b139f9 | 556 | struct octeon_ciu_chip_data *cd; |
0c326387 | 557 | |
64b139f9 DD |
558 | cd = irq_data_get_irq_chip_data(data); |
559 | mask = 1ull << (cd->bit); | |
0c326387 | 560 | |
64b139f9 | 561 | if (cd->line == 0) { |
0c326387 | 562 | int index = cvmx_get_core_num() * 2; |
5aae1fd4 | 563 | cvmx_write_csr(CVMX_CIU_INTX_SUM0(index), mask); |
0c326387 DD |
564 | } else { |
565 | cvmx_write_csr(CVMX_CIU_INT_SUM1, mask); | |
5aae1fd4 | 566 | } |
86568dc4 DD |
567 | } |
568 | ||
dbb103b2 | 569 | /* |
0c326387 | 570 | * Disable the irq on the all cores for chips that have the EN*_W1{S,C} |
dbb103b2 DD |
571 | * registers. |
572 | */ | |
0c326387 | 573 | static void octeon_irq_ciu_disable_all_v2(struct irq_data *data) |
dbb103b2 | 574 | { |
0c326387 DD |
575 | int cpu; |
576 | u64 mask; | |
64b139f9 | 577 | struct octeon_ciu_chip_data *cd; |
dbb103b2 | 578 | |
64b139f9 DD |
579 | cd = irq_data_get_irq_chip_data(data); |
580 | mask = 1ull << (cd->bit); | |
0c326387 | 581 | |
64b139f9 | 582 | if (cd->line == 0) { |
0c326387 DD |
583 | for_each_online_cpu(cpu) { |
584 | int index = octeon_coreid_for_cpu(cpu) * 2; | |
64b139f9 DD |
585 | clear_bit(cd->bit, |
586 | &per_cpu(octeon_irq_ciu0_en_mirror, cpu)); | |
0c326387 DD |
587 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1C(index), mask); |
588 | } | |
589 | } else { | |
590 | for_each_online_cpu(cpu) { | |
591 | int index = octeon_coreid_for_cpu(cpu) * 2 + 1; | |
64b139f9 DD |
592 | clear_bit(cd->bit, |
593 | &per_cpu(octeon_irq_ciu1_en_mirror, cpu)); | |
0c326387 DD |
594 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1C(index), mask); |
595 | } | |
596 | } | |
dbb103b2 DD |
597 | } |
598 | ||
cd847b78 | 599 | /* |
0c326387 | 600 | * Enable the irq on the all cores for chips that have the EN*_W1{S,C} |
cd847b78 DD |
601 | * registers. |
602 | */ | |
0c326387 | 603 | static void octeon_irq_ciu_enable_all_v2(struct irq_data *data) |
cd847b78 | 604 | { |
cd847b78 | 605 | int cpu; |
0c326387 | 606 | u64 mask; |
64b139f9 | 607 | struct octeon_ciu_chip_data *cd; |
0c326387 | 608 | |
64b139f9 DD |
609 | cd = irq_data_get_irq_chip_data(data); |
610 | mask = 1ull << (cd->bit); | |
0c326387 | 611 | |
64b139f9 | 612 | if (cd->line == 0) { |
0c326387 DD |
613 | for_each_online_cpu(cpu) { |
614 | int index = octeon_coreid_for_cpu(cpu) * 2; | |
64b139f9 DD |
615 | set_bit(cd->bit, |
616 | &per_cpu(octeon_irq_ciu0_en_mirror, cpu)); | |
0c326387 DD |
617 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask); |
618 | } | |
619 | } else { | |
620 | for_each_online_cpu(cpu) { | |
621 | int index = octeon_coreid_for_cpu(cpu) * 2 + 1; | |
64b139f9 DD |
622 | set_bit(cd->bit, |
623 | &per_cpu(octeon_irq_ciu1_en_mirror, cpu)); | |
0c326387 DD |
624 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask); |
625 | } | |
cd847b78 | 626 | } |
5b3b1688 DD |
627 | } |
628 | ||
6d1ab4c2 DD |
629 | static void octeon_irq_gpio_setup(struct irq_data *data) |
630 | { | |
631 | union cvmx_gpio_bit_cfgx cfg; | |
64b139f9 | 632 | struct octeon_ciu_chip_data *cd; |
6d1ab4c2 DD |
633 | u32 t = irqd_get_trigger_type(data); |
634 | ||
64b139f9 | 635 | cd = irq_data_get_irq_chip_data(data); |
6d1ab4c2 DD |
636 | |
637 | cfg.u64 = 0; | |
638 | cfg.s.int_en = 1; | |
639 | cfg.s.int_type = (t & IRQ_TYPE_EDGE_BOTH) != 0; | |
640 | cfg.s.rx_xor = (t & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_EDGE_FALLING)) != 0; | |
641 | ||
642 | /* 140 nS glitch filter*/ | |
643 | cfg.s.fil_cnt = 7; | |
644 | cfg.s.fil_sel = 3; | |
645 | ||
64b139f9 | 646 | cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd->gpio_line), cfg.u64); |
6d1ab4c2 DD |
647 | } |
648 | ||
649 | static void octeon_irq_ciu_enable_gpio_v2(struct irq_data *data) | |
650 | { | |
651 | octeon_irq_gpio_setup(data); | |
652 | octeon_irq_ciu_enable_v2(data); | |
653 | } | |
654 | ||
655 | static void octeon_irq_ciu_enable_gpio(struct irq_data *data) | |
656 | { | |
657 | octeon_irq_gpio_setup(data); | |
658 | octeon_irq_ciu_enable(data); | |
659 | } | |
660 | ||
661 | static int octeon_irq_ciu_gpio_set_type(struct irq_data *data, unsigned int t) | |
662 | { | |
663 | irqd_set_trigger_type(data, t); | |
664 | octeon_irq_gpio_setup(data); | |
665 | ||
56a86c35 TG |
666 | if (irqd_get_trigger_type(data) & IRQ_TYPE_EDGE_BOTH) |
667 | irq_set_handler_locked(data, handle_edge_irq); | |
668 | else | |
669 | irq_set_handler_locked(data, handle_level_irq); | |
670 | ||
6d1ab4c2 DD |
671 | return IRQ_SET_MASK_OK; |
672 | } | |
673 | ||
674 | static void octeon_irq_ciu_disable_gpio_v2(struct irq_data *data) | |
675 | { | |
64b139f9 | 676 | struct octeon_ciu_chip_data *cd; |
6d1ab4c2 | 677 | |
64b139f9 DD |
678 | cd = irq_data_get_irq_chip_data(data); |
679 | cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd->gpio_line), 0); | |
6d1ab4c2 DD |
680 | |
681 | octeon_irq_ciu_disable_all_v2(data); | |
682 | } | |
683 | ||
684 | static void octeon_irq_ciu_disable_gpio(struct irq_data *data) | |
685 | { | |
64b139f9 | 686 | struct octeon_ciu_chip_data *cd; |
6d1ab4c2 | 687 | |
64b139f9 DD |
688 | cd = irq_data_get_irq_chip_data(data); |
689 | cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd->gpio_line), 0); | |
6d1ab4c2 DD |
690 | |
691 | octeon_irq_ciu_disable_all(data); | |
692 | } | |
693 | ||
694 | static void octeon_irq_ciu_gpio_ack(struct irq_data *data) | |
695 | { | |
64b139f9 | 696 | struct octeon_ciu_chip_data *cd; |
6d1ab4c2 DD |
697 | u64 mask; |
698 | ||
64b139f9 DD |
699 | cd = irq_data_get_irq_chip_data(data); |
700 | mask = 1ull << (cd->gpio_line); | |
6d1ab4c2 DD |
701 | |
702 | cvmx_write_csr(CVMX_GPIO_INT_CLR, mask); | |
703 | } | |
704 | ||
5b3b1688 | 705 | #ifdef CONFIG_SMP |
0c326387 DD |
706 | |
707 | static void octeon_irq_cpu_offline_ciu(struct irq_data *data) | |
708 | { | |
709 | int cpu = smp_processor_id(); | |
710 | cpumask_t new_affinity; | |
5c159422 | 711 | struct cpumask *mask = irq_data_get_affinity_mask(data); |
0c326387 | 712 | |
5c159422 | 713 | if (!cpumask_test_cpu(cpu, mask)) |
0c326387 DD |
714 | return; |
715 | ||
5c159422 | 716 | if (cpumask_weight(mask) > 1) { |
0c326387 DD |
717 | /* |
718 | * It has multi CPU affinity, just remove this CPU | |
719 | * from the affinity set. | |
720 | */ | |
5c159422 | 721 | cpumask_copy(&new_affinity, mask); |
0c326387 DD |
722 | cpumask_clear_cpu(cpu, &new_affinity); |
723 | } else { | |
724 | /* Otherwise, put it on lowest numbered online CPU. */ | |
725 | cpumask_clear(&new_affinity); | |
726 | cpumask_set_cpu(cpumask_first(cpu_online_mask), &new_affinity); | |
727 | } | |
01f8fa4f | 728 | irq_set_affinity_locked(data, &new_affinity, false); |
0c326387 DD |
729 | } |
730 | ||
731 | static int octeon_irq_ciu_set_affinity(struct irq_data *data, | |
732 | const struct cpumask *dest, bool force) | |
5b3b1688 DD |
733 | { |
734 | int cpu; | |
5b7cd6fd | 735 | bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data); |
b6b74d54 | 736 | unsigned long flags; |
64b139f9 | 737 | struct octeon_ciu_chip_data *cd; |
1a7e68f2 DD |
738 | unsigned long *pen; |
739 | raw_spinlock_t *lock; | |
0c326387 | 740 | |
64b139f9 | 741 | cd = irq_data_get_irq_chip_data(data); |
5b3b1688 | 742 | |
5aae1fd4 DD |
743 | /* |
744 | * For non-v2 CIU, we will allow only single CPU affinity. | |
745 | * This removes the need to do locking in the .ack/.eoi | |
746 | * functions. | |
747 | */ | |
748 | if (cpumask_weight(dest) != 1) | |
749 | return -EINVAL; | |
750 | ||
5b7cd6fd | 751 | if (!enable_one) |
0c326387 DD |
752 | return 0; |
753 | ||
0c326387 | 754 | |
1a7e68f2 DD |
755 | for_each_online_cpu(cpu) { |
756 | int coreid = octeon_coreid_for_cpu(cpu); | |
757 | ||
758 | lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); | |
759 | raw_spin_lock_irqsave(lock, flags); | |
760 | ||
64b139f9 | 761 | if (cd->line == 0) |
1a7e68f2 DD |
762 | pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); |
763 | else | |
764 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); | |
765 | ||
766 | if (cpumask_test_cpu(cpu, dest) && enable_one) { | |
767 | enable_one = 0; | |
64b139f9 | 768 | __set_bit(cd->bit, pen); |
1a7e68f2 | 769 | } else { |
64b139f9 | 770 | __clear_bit(cd->bit, pen); |
0c326387 | 771 | } |
1a7e68f2 DD |
772 | /* |
773 | * Must be visible to octeon_irq_ip{2,3}_ciu() before | |
774 | * enabling the irq. | |
775 | */ | |
776 | wmb(); | |
0c326387 | 777 | |
64b139f9 | 778 | if (cd->line == 0) |
1a7e68f2 DD |
779 | cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen); |
780 | else | |
0c326387 | 781 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
1a7e68f2 DD |
782 | |
783 | raw_spin_unlock_irqrestore(lock, flags); | |
5b3b1688 | 784 | } |
d5dedd45 | 785 | return 0; |
5b3b1688 | 786 | } |
cd847b78 DD |
787 | |
788 | /* | |
789 | * Set affinity for the irq for chips that have the EN*_W1{S,C} | |
790 | * registers. | |
791 | */ | |
0c326387 DD |
792 | static int octeon_irq_ciu_set_affinity_v2(struct irq_data *data, |
793 | const struct cpumask *dest, | |
794 | bool force) | |
cd847b78 DD |
795 | { |
796 | int cpu; | |
5b7cd6fd | 797 | bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data); |
0c326387 | 798 | u64 mask; |
64b139f9 | 799 | struct octeon_ciu_chip_data *cd; |
0c326387 | 800 | |
5b7cd6fd | 801 | if (!enable_one) |
0c326387 DD |
802 | return 0; |
803 | ||
64b139f9 DD |
804 | cd = irq_data_get_irq_chip_data(data); |
805 | mask = 1ull << cd->bit; | |
0c326387 | 806 | |
64b139f9 | 807 | if (cd->line == 0) { |
0c326387 DD |
808 | for_each_online_cpu(cpu) { |
809 | unsigned long *pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu); | |
810 | int index = octeon_coreid_for_cpu(cpu) * 2; | |
811 | if (cpumask_test_cpu(cpu, dest) && enable_one) { | |
5b7cd6fd | 812 | enable_one = false; |
64b139f9 | 813 | set_bit(cd->bit, pen); |
0c326387 DD |
814 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask); |
815 | } else { | |
64b139f9 | 816 | clear_bit(cd->bit, pen); |
0c326387 DD |
817 | cvmx_write_csr(CVMX_CIU_INTX_EN0_W1C(index), mask); |
818 | } | |
819 | } | |
820 | } else { | |
821 | for_each_online_cpu(cpu) { | |
822 | unsigned long *pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); | |
823 | int index = octeon_coreid_for_cpu(cpu) * 2 + 1; | |
824 | if (cpumask_test_cpu(cpu, dest) && enable_one) { | |
5b7cd6fd | 825 | enable_one = false; |
64b139f9 | 826 | set_bit(cd->bit, pen); |
0c326387 DD |
827 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask); |
828 | } else { | |
64b139f9 | 829 | clear_bit(cd->bit, pen); |
0c326387 DD |
830 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1C(index), mask); |
831 | } | |
5aae1fd4 | 832 | } |
cd847b78 DD |
833 | } |
834 | return 0; | |
835 | } | |
64b139f9 DD |
836 | |
837 | static int octeon_irq_ciu_set_affinity_sum2(struct irq_data *data, | |
838 | const struct cpumask *dest, | |
839 | bool force) | |
840 | { | |
841 | int cpu; | |
842 | bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data); | |
843 | u64 mask; | |
844 | struct octeon_ciu_chip_data *cd; | |
845 | ||
846 | if (!enable_one) | |
847 | return 0; | |
848 | ||
849 | cd = irq_data_get_irq_chip_data(data); | |
850 | mask = 1ull << cd->bit; | |
851 | ||
852 | for_each_online_cpu(cpu) { | |
853 | int index = octeon_coreid_for_cpu(cpu); | |
854 | ||
855 | if (cpumask_test_cpu(cpu, dest) && enable_one) { | |
856 | enable_one = false; | |
857 | cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1S(index), mask); | |
858 | } else { | |
859 | cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1C(index), mask); | |
860 | } | |
861 | } | |
862 | return 0; | |
863 | } | |
5b3b1688 DD |
864 | #endif |
865 | ||
cd847b78 DD |
866 | /* |
867 | * Newer octeon chips have support for lockless CIU operation. | |
868 | */ | |
0c326387 | 869 | static struct irq_chip octeon_irq_chip_ciu_v2 = { |
2e3ecab1 DD |
870 | .name = "CIU", |
871 | .irq_enable = octeon_irq_ciu_enable_v2, | |
872 | .irq_disable = octeon_irq_ciu_disable_all_v2, | |
873 | .irq_mask = octeon_irq_ciu_disable_local_v2, | |
874 | .irq_unmask = octeon_irq_ciu_enable_v2, | |
875 | #ifdef CONFIG_SMP | |
876 | .irq_set_affinity = octeon_irq_ciu_set_affinity_v2, | |
877 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, | |
878 | #endif | |
879 | }; | |
880 | ||
881 | static struct irq_chip octeon_irq_chip_ciu_v2_edge = { | |
0c326387 DD |
882 | .name = "CIU", |
883 | .irq_enable = octeon_irq_ciu_enable_v2, | |
884 | .irq_disable = octeon_irq_ciu_disable_all_v2, | |
0c326387 DD |
885 | .irq_ack = octeon_irq_ciu_ack, |
886 | .irq_mask = octeon_irq_ciu_disable_local_v2, | |
887 | .irq_unmask = octeon_irq_ciu_enable_v2, | |
5b3b1688 | 888 | #ifdef CONFIG_SMP |
0c326387 DD |
889 | .irq_set_affinity = octeon_irq_ciu_set_affinity_v2, |
890 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, | |
5b3b1688 DD |
891 | #endif |
892 | }; | |
893 | ||
64b139f9 DD |
894 | /* |
895 | * Newer octeon chips have support for lockless CIU operation. | |
896 | */ | |
897 | static struct irq_chip octeon_irq_chip_ciu_sum2 = { | |
898 | .name = "CIU", | |
899 | .irq_enable = octeon_irq_ciu_enable_sum2, | |
900 | .irq_disable = octeon_irq_ciu_disable_all_sum2, | |
901 | .irq_mask = octeon_irq_ciu_disable_local_sum2, | |
902 | .irq_unmask = octeon_irq_ciu_enable_sum2, | |
903 | #ifdef CONFIG_SMP | |
904 | .irq_set_affinity = octeon_irq_ciu_set_affinity_sum2, | |
905 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, | |
906 | #endif | |
907 | }; | |
908 | ||
909 | static struct irq_chip octeon_irq_chip_ciu_sum2_edge = { | |
910 | .name = "CIU", | |
911 | .irq_enable = octeon_irq_ciu_enable_sum2, | |
912 | .irq_disable = octeon_irq_ciu_disable_all_sum2, | |
913 | .irq_ack = octeon_irq_ciu_ack_sum2, | |
914 | .irq_mask = octeon_irq_ciu_disable_local_sum2, | |
915 | .irq_unmask = octeon_irq_ciu_enable_sum2, | |
916 | #ifdef CONFIG_SMP | |
917 | .irq_set_affinity = octeon_irq_ciu_set_affinity_sum2, | |
918 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, | |
919 | #endif | |
920 | }; | |
921 | ||
0c326387 | 922 | static struct irq_chip octeon_irq_chip_ciu = { |
2e3ecab1 DD |
923 | .name = "CIU", |
924 | .irq_enable = octeon_irq_ciu_enable, | |
925 | .irq_disable = octeon_irq_ciu_disable_all, | |
926 | .irq_mask = octeon_irq_ciu_disable_local, | |
927 | .irq_unmask = octeon_irq_ciu_enable, | |
928 | #ifdef CONFIG_SMP | |
929 | .irq_set_affinity = octeon_irq_ciu_set_affinity, | |
930 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, | |
931 | #endif | |
932 | }; | |
933 | ||
934 | static struct irq_chip octeon_irq_chip_ciu_edge = { | |
0c326387 DD |
935 | .name = "CIU", |
936 | .irq_enable = octeon_irq_ciu_enable, | |
937 | .irq_disable = octeon_irq_ciu_disable_all, | |
0c326387 | 938 | .irq_ack = octeon_irq_ciu_ack, |
1a7e68f2 DD |
939 | .irq_mask = octeon_irq_ciu_disable_local, |
940 | .irq_unmask = octeon_irq_ciu_enable, | |
0c326387 DD |
941 | #ifdef CONFIG_SMP |
942 | .irq_set_affinity = octeon_irq_ciu_set_affinity, | |
943 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, | |
944 | #endif | |
86568dc4 DD |
945 | }; |
946 | ||
0c326387 DD |
947 | /* The mbox versions don't do any affinity or round-robin. */ |
948 | static struct irq_chip octeon_irq_chip_ciu_mbox_v2 = { | |
949 | .name = "CIU-M", | |
950 | .irq_enable = octeon_irq_ciu_enable_all_v2, | |
951 | .irq_disable = octeon_irq_ciu_disable_all_v2, | |
952 | .irq_ack = octeon_irq_ciu_disable_local_v2, | |
953 | .irq_eoi = octeon_irq_ciu_enable_local_v2, | |
954 | ||
5b7cd6fd TG |
955 | .irq_cpu_online = octeon_irq_ciu_enable_local_v2, |
956 | .irq_cpu_offline = octeon_irq_ciu_disable_local_v2, | |
957 | .flags = IRQCHIP_ONOFFLINE_ENABLED, | |
0c326387 | 958 | }; |
5b3b1688 | 959 | |
0c326387 DD |
960 | static struct irq_chip octeon_irq_chip_ciu_mbox = { |
961 | .name = "CIU-M", | |
962 | .irq_enable = octeon_irq_ciu_enable_all, | |
963 | .irq_disable = octeon_irq_ciu_disable_all, | |
1a7e68f2 DD |
964 | .irq_ack = octeon_irq_ciu_disable_local, |
965 | .irq_eoi = octeon_irq_ciu_enable_local, | |
5b3b1688 | 966 | |
5b7cd6fd TG |
967 | .irq_cpu_online = octeon_irq_ciu_enable_local, |
968 | .irq_cpu_offline = octeon_irq_ciu_disable_local, | |
969 | .flags = IRQCHIP_ONOFFLINE_ENABLED, | |
0c326387 DD |
970 | }; |
971 | ||
6d1ab4c2 DD |
972 | static struct irq_chip octeon_irq_chip_ciu_gpio_v2 = { |
973 | .name = "CIU-GPIO", | |
974 | .irq_enable = octeon_irq_ciu_enable_gpio_v2, | |
975 | .irq_disable = octeon_irq_ciu_disable_gpio_v2, | |
976 | .irq_ack = octeon_irq_ciu_gpio_ack, | |
977 | .irq_mask = octeon_irq_ciu_disable_local_v2, | |
978 | .irq_unmask = octeon_irq_ciu_enable_v2, | |
979 | .irq_set_type = octeon_irq_ciu_gpio_set_type, | |
980 | #ifdef CONFIG_SMP | |
981 | .irq_set_affinity = octeon_irq_ciu_set_affinity_v2, | |
cf355704 | 982 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, |
6d1ab4c2 DD |
983 | #endif |
984 | .flags = IRQCHIP_SET_TYPE_MASKED, | |
985 | }; | |
986 | ||
987 | static struct irq_chip octeon_irq_chip_ciu_gpio = { | |
988 | .name = "CIU-GPIO", | |
989 | .irq_enable = octeon_irq_ciu_enable_gpio, | |
990 | .irq_disable = octeon_irq_ciu_disable_gpio, | |
1a7e68f2 DD |
991 | .irq_mask = octeon_irq_ciu_disable_local, |
992 | .irq_unmask = octeon_irq_ciu_enable, | |
6d1ab4c2 DD |
993 | .irq_ack = octeon_irq_ciu_gpio_ack, |
994 | .irq_set_type = octeon_irq_ciu_gpio_set_type, | |
995 | #ifdef CONFIG_SMP | |
996 | .irq_set_affinity = octeon_irq_ciu_set_affinity, | |
cf355704 | 997 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, |
6d1ab4c2 DD |
998 | #endif |
999 | .flags = IRQCHIP_SET_TYPE_MASKED, | |
1000 | }; | |
1001 | ||
0c326387 DD |
1002 | /* |
1003 | * Watchdog interrupts are special. They are associated with a single | |
1004 | * core, so we hardwire the affinity to that core. | |
1005 | */ | |
1006 | static void octeon_irq_ciu_wd_enable(struct irq_data *data) | |
5b3b1688 | 1007 | { |
5b3b1688 | 1008 | unsigned long flags; |
0c326387 DD |
1009 | unsigned long *pen; |
1010 | int coreid = data->irq - OCTEON_IRQ_WDOG0; /* Bit 0-63 of EN1 */ | |
1011 | int cpu = octeon_cpu_for_coreid(coreid); | |
1a7e68f2 | 1012 | raw_spinlock_t *lock = &per_cpu(octeon_irq_ciu_spinlock, cpu); |
5b3b1688 | 1013 | |
1a7e68f2 | 1014 | raw_spin_lock_irqsave(lock, flags); |
0c326387 | 1015 | pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu); |
1a7e68f2 DD |
1016 | __set_bit(coreid, pen); |
1017 | /* | |
1018 | * Must be visible to octeon_irq_ip{2,3}_ciu() before enabling | |
1019 | * the irq. | |
1020 | */ | |
1021 | wmb(); | |
0c326387 | 1022 | cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen); |
1a7e68f2 | 1023 | raw_spin_unlock_irqrestore(lock, flags); |
5b3b1688 DD |
1024 | } |
1025 | ||
5aae1fd4 DD |
1026 | /* |
1027 | * Watchdog interrupts are special. They are associated with a single | |
1028 | * core, so we hardwire the affinity to that core. | |
1029 | */ | |
0c326387 | 1030 | static void octeon_irq_ciu1_wd_enable_v2(struct irq_data *data) |
5aae1fd4 | 1031 | { |
0c326387 DD |
1032 | int coreid = data->irq - OCTEON_IRQ_WDOG0; |
1033 | int cpu = octeon_cpu_for_coreid(coreid); | |
5aae1fd4 | 1034 | |
0c326387 DD |
1035 | set_bit(coreid, &per_cpu(octeon_irq_ciu1_en_mirror, cpu)); |
1036 | cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(coreid * 2 + 1), 1ull << coreid); | |
5aae1fd4 DD |
1037 | } |
1038 | ||
0c326387 DD |
1039 | |
1040 | static struct irq_chip octeon_irq_chip_ciu_wd_v2 = { | |
1041 | .name = "CIU-W", | |
1042 | .irq_enable = octeon_irq_ciu1_wd_enable_v2, | |
1043 | .irq_disable = octeon_irq_ciu_disable_all_v2, | |
1044 | .irq_mask = octeon_irq_ciu_disable_local_v2, | |
1045 | .irq_unmask = octeon_irq_ciu_enable_local_v2, | |
1046 | }; | |
1047 | ||
1048 | static struct irq_chip octeon_irq_chip_ciu_wd = { | |
1049 | .name = "CIU-W", | |
1050 | .irq_enable = octeon_irq_ciu_wd_enable, | |
1051 | .irq_disable = octeon_irq_ciu_disable_all, | |
1a7e68f2 DD |
1052 | .irq_mask = octeon_irq_ciu_disable_local, |
1053 | .irq_unmask = octeon_irq_ciu_enable_local, | |
0c326387 DD |
1054 | }; |
1055 | ||
a0c16582 DD |
1056 | static bool octeon_irq_ciu_is_edge(unsigned int line, unsigned int bit) |
1057 | { | |
1058 | bool edge = false; | |
1059 | ||
1060 | if (line == 0) | |
1061 | switch (bit) { | |
1062 | case 48 ... 49: /* GMX DRP */ | |
1063 | case 50: /* IPD_DRP */ | |
1064 | case 52 ... 55: /* Timers */ | |
1065 | case 58: /* MPI */ | |
1066 | edge = true; | |
1067 | break; | |
1068 | default: | |
1069 | break; | |
1070 | } | |
1071 | else /* line == 1 */ | |
1072 | switch (bit) { | |
1073 | case 47: /* PTP */ | |
1074 | edge = true; | |
1075 | break; | |
1076 | default: | |
1077 | break; | |
1078 | } | |
1079 | return edge; | |
1080 | } | |
1081 | ||
1082 | struct octeon_irq_gpio_domain_data { | |
1083 | unsigned int base_hwirq; | |
1084 | }; | |
1085 | ||
1086 | static int octeon_irq_gpio_xlat(struct irq_domain *d, | |
1087 | struct device_node *node, | |
1088 | const u32 *intspec, | |
1089 | unsigned int intsize, | |
1090 | unsigned long *out_hwirq, | |
1091 | unsigned int *out_type) | |
1092 | { | |
1093 | unsigned int type; | |
1094 | unsigned int pin; | |
1095 | unsigned int trigger; | |
a0c16582 | 1096 | |
5d4c9bc7 | 1097 | if (irq_domain_get_of_node(d) != node) |
a0c16582 DD |
1098 | return -EINVAL; |
1099 | ||
1100 | if (intsize < 2) | |
1101 | return -EINVAL; | |
1102 | ||
1103 | pin = intspec[0]; | |
1104 | if (pin >= 16) | |
1105 | return -EINVAL; | |
1106 | ||
1107 | trigger = intspec[1]; | |
1108 | ||
1109 | switch (trigger) { | |
1110 | case 1: | |
1111 | type = IRQ_TYPE_EDGE_RISING; | |
1112 | break; | |
1113 | case 2: | |
1114 | type = IRQ_TYPE_EDGE_FALLING; | |
1115 | break; | |
1116 | case 4: | |
1117 | type = IRQ_TYPE_LEVEL_HIGH; | |
1118 | break; | |
1119 | case 8: | |
1120 | type = IRQ_TYPE_LEVEL_LOW; | |
1121 | break; | |
1122 | default: | |
1123 | pr_err("Error: (%s) Invalid irq trigger specification: %x\n", | |
1124 | node->name, | |
1125 | trigger); | |
1126 | type = IRQ_TYPE_LEVEL_LOW; | |
1127 | break; | |
1128 | } | |
1129 | *out_type = type; | |
87161ccd | 1130 | *out_hwirq = pin; |
a0c16582 DD |
1131 | |
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | static int octeon_irq_ciu_xlat(struct irq_domain *d, | |
1136 | struct device_node *node, | |
1137 | const u32 *intspec, | |
1138 | unsigned int intsize, | |
1139 | unsigned long *out_hwirq, | |
1140 | unsigned int *out_type) | |
1141 | { | |
1142 | unsigned int ciu, bit; | |
64b139f9 | 1143 | struct octeon_irq_ciu_domain_data *dd = d->host_data; |
a0c16582 DD |
1144 | |
1145 | ciu = intspec[0]; | |
1146 | bit = intspec[1]; | |
1147 | ||
64b139f9 | 1148 | if (ciu >= dd->num_sum || bit > 63) |
a0c16582 DD |
1149 | return -EINVAL; |
1150 | ||
a0c16582 DD |
1151 | *out_hwirq = (ciu << 6) | bit; |
1152 | *out_type = 0; | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | static struct irq_chip *octeon_irq_ciu_chip; | |
2e3ecab1 | 1158 | static struct irq_chip *octeon_irq_ciu_chip_edge; |
a0c16582 DD |
1159 | static struct irq_chip *octeon_irq_gpio_chip; |
1160 | ||
a0c16582 DD |
1161 | static int octeon_irq_ciu_map(struct irq_domain *d, |
1162 | unsigned int virq, irq_hw_number_t hw) | |
1163 | { | |
64b139f9 | 1164 | int rv; |
a0c16582 DD |
1165 | unsigned int line = hw >> 6; |
1166 | unsigned int bit = hw & 63; | |
64b139f9 | 1167 | struct octeon_irq_ciu_domain_data *dd = d->host_data; |
a0c16582 | 1168 | |
64b139f9 | 1169 | if (line >= dd->num_sum || octeon_irq_ciu_to_irq[line][bit] != 0) |
a0c16582 DD |
1170 | return -EINVAL; |
1171 | ||
64b139f9 DD |
1172 | if (line == 2) { |
1173 | if (octeon_irq_ciu_is_edge(line, bit)) | |
1174 | rv = octeon_irq_set_ciu_mapping(virq, line, bit, 0, | |
1175 | &octeon_irq_chip_ciu_sum2_edge, | |
1176 | handle_edge_irq); | |
1177 | else | |
1178 | rv = octeon_irq_set_ciu_mapping(virq, line, bit, 0, | |
1179 | &octeon_irq_chip_ciu_sum2, | |
1180 | handle_level_irq); | |
1181 | } else { | |
1182 | if (octeon_irq_ciu_is_edge(line, bit)) | |
1183 | rv = octeon_irq_set_ciu_mapping(virq, line, bit, 0, | |
1184 | octeon_irq_ciu_chip_edge, | |
1185 | handle_edge_irq); | |
1186 | else | |
1187 | rv = octeon_irq_set_ciu_mapping(virq, line, bit, 0, | |
1188 | octeon_irq_ciu_chip, | |
1189 | handle_level_irq); | |
1190 | } | |
1191 | return rv; | |
a0c16582 DD |
1192 | } |
1193 | ||
64b139f9 DD |
1194 | static int octeon_irq_gpio_map(struct irq_domain *d, |
1195 | unsigned int virq, irq_hw_number_t hw) | |
a0c16582 | 1196 | { |
87161ccd DD |
1197 | struct octeon_irq_gpio_domain_data *gpiod = d->host_data; |
1198 | unsigned int line, bit; | |
64b139f9 | 1199 | int r; |
a0c16582 | 1200 | |
d41d547a AS |
1201 | line = (hw + gpiod->base_hwirq) >> 6; |
1202 | bit = (hw + gpiod->base_hwirq) & 63; | |
64b139f9 DD |
1203 | if (line > ARRAY_SIZE(octeon_irq_ciu_to_irq) || |
1204 | octeon_irq_ciu_to_irq[line][bit] != 0) | |
a0c16582 DD |
1205 | return -EINVAL; |
1206 | ||
56a86c35 TG |
1207 | /* |
1208 | * Default to handle_level_irq. If the DT contains a different | |
1209 | * trigger type, it will call the irq_set_type callback and | |
1210 | * the handler gets updated. | |
1211 | */ | |
64b139f9 | 1212 | r = octeon_irq_set_ciu_mapping(virq, line, bit, hw, |
56a86c35 | 1213 | octeon_irq_gpio_chip, handle_level_irq); |
64b139f9 | 1214 | return r; |
88fd8589 DD |
1215 | } |
1216 | ||
a0c16582 DD |
1217 | static struct irq_domain_ops octeon_irq_domain_ciu_ops = { |
1218 | .map = octeon_irq_ciu_map, | |
64b139f9 | 1219 | .unmap = octeon_irq_free_cd, |
a0c16582 DD |
1220 | .xlate = octeon_irq_ciu_xlat, |
1221 | }; | |
1222 | ||
1223 | static struct irq_domain_ops octeon_irq_domain_gpio_ops = { | |
1224 | .map = octeon_irq_gpio_map, | |
64b139f9 | 1225 | .unmap = octeon_irq_free_cd, |
a0c16582 DD |
1226 | .xlate = octeon_irq_gpio_xlat, |
1227 | }; | |
1228 | ||
1a7e68f2 | 1229 | static void octeon_irq_ip2_ciu(void) |
cd847b78 | 1230 | { |
0c326387 DD |
1231 | const unsigned long core_id = cvmx_get_core_num(); |
1232 | u64 ciu_sum = cvmx_read_csr(CVMX_CIU_INTX_SUM0(core_id * 2)); | |
1233 | ||
35898716 | 1234 | ciu_sum &= __this_cpu_read(octeon_irq_ciu0_en_mirror); |
0c326387 DD |
1235 | if (likely(ciu_sum)) { |
1236 | int bit = fls64(ciu_sum) - 1; | |
1237 | int irq = octeon_irq_ciu_to_irq[0][bit]; | |
1238 | if (likely(irq)) | |
1239 | do_IRQ(irq); | |
1240 | else | |
1241 | spurious_interrupt(); | |
1242 | } else { | |
1243 | spurious_interrupt(); | |
5aae1fd4 | 1244 | } |
cd847b78 | 1245 | } |
cd847b78 | 1246 | |
1a7e68f2 | 1247 | static void octeon_irq_ip3_ciu(void) |
dbb103b2 | 1248 | { |
0c326387 DD |
1249 | u64 ciu_sum = cvmx_read_csr(CVMX_CIU_INT_SUM1); |
1250 | ||
35898716 | 1251 | ciu_sum &= __this_cpu_read(octeon_irq_ciu1_en_mirror); |
0c326387 DD |
1252 | if (likely(ciu_sum)) { |
1253 | int bit = fls64(ciu_sum) - 1; | |
1254 | int irq = octeon_irq_ciu_to_irq[1][bit]; | |
1255 | if (likely(irq)) | |
1256 | do_IRQ(irq); | |
1257 | else | |
1258 | spurious_interrupt(); | |
1259 | } else { | |
1260 | spurious_interrupt(); | |
1261 | } | |
dbb103b2 DD |
1262 | } |
1263 | ||
64b139f9 DD |
1264 | static void octeon_irq_ip4_ciu(void) |
1265 | { | |
1266 | int coreid = cvmx_get_core_num(); | |
1267 | u64 ciu_sum = cvmx_read_csr(CVMX_CIU_SUM2_PPX_IP4(coreid)); | |
1268 | u64 ciu_en = cvmx_read_csr(CVMX_CIU_EN2_PPX_IP4(coreid)); | |
1269 | ||
1270 | ciu_sum &= ciu_en; | |
1271 | if (likely(ciu_sum)) { | |
1272 | int bit = fls64(ciu_sum) - 1; | |
1273 | int irq = octeon_irq_ciu_to_irq[2][bit]; | |
1274 | ||
1275 | if (likely(irq)) | |
1276 | do_IRQ(irq); | |
1277 | else | |
1278 | spurious_interrupt(); | |
1279 | } else { | |
1280 | spurious_interrupt(); | |
1281 | } | |
1282 | } | |
1283 | ||
88fd8589 DD |
1284 | static bool octeon_irq_use_ip4; |
1285 | ||
078a55fc | 1286 | static void octeon_irq_local_enable_ip4(void *arg) |
88fd8589 DD |
1287 | { |
1288 | set_c0_status(STATUSF_IP4); | |
1289 | } | |
1290 | ||
0c326387 | 1291 | static void octeon_irq_ip4_mask(void) |
cd847b78 | 1292 | { |
0c326387 DD |
1293 | clear_c0_status(STATUSF_IP4); |
1294 | spurious_interrupt(); | |
5b3b1688 DD |
1295 | } |
1296 | ||
0c326387 DD |
1297 | static void (*octeon_irq_ip2)(void); |
1298 | static void (*octeon_irq_ip3)(void); | |
1299 | static void (*octeon_irq_ip4)(void); | |
5b3b1688 | 1300 | |
078a55fc | 1301 | void (*octeon_irq_setup_secondary)(void); |
5aae1fd4 | 1302 | |
078a55fc | 1303 | void octeon_irq_set_ip4_handler(octeon_irq_ip4_handler_t h) |
88fd8589 DD |
1304 | { |
1305 | octeon_irq_ip4 = h; | |
1306 | octeon_irq_use_ip4 = true; | |
1307 | on_each_cpu(octeon_irq_local_enable_ip4, NULL, 1); | |
1308 | } | |
1309 | ||
078a55fc | 1310 | static void octeon_irq_percpu_enable(void) |
0c326387 DD |
1311 | { |
1312 | irq_cpu_online(); | |
1313 | } | |
1314 | ||
078a55fc | 1315 | static void octeon_irq_init_ciu_percpu(void) |
0c326387 DD |
1316 | { |
1317 | int coreid = cvmx_get_core_num(); | |
1a7e68f2 DD |
1318 | |
1319 | ||
35898716 CL |
1320 | __this_cpu_write(octeon_irq_ciu0_en_mirror, 0); |
1321 | __this_cpu_write(octeon_irq_ciu1_en_mirror, 0); | |
1a7e68f2 | 1322 | wmb(); |
35898716 | 1323 | raw_spin_lock_init(this_cpu_ptr(&octeon_irq_ciu_spinlock)); |
5b3b1688 | 1324 | /* |
0c326387 DD |
1325 | * Disable All CIU Interrupts. The ones we need will be |
1326 | * enabled later. Read the SUM register so we know the write | |
1327 | * completed. | |
5b3b1688 | 1328 | */ |
0c326387 DD |
1329 | cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2)), 0); |
1330 | cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2 + 1)), 0); | |
1331 | cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2)), 0); | |
1332 | cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2 + 1)), 0); | |
1333 | cvmx_read_csr(CVMX_CIU_INTX_SUM0((coreid * 2))); | |
5b3b1688 | 1334 | } |
cd847b78 | 1335 | |
88fd8589 DD |
1336 | static void octeon_irq_init_ciu2_percpu(void) |
1337 | { | |
1338 | u64 regx, ipx; | |
1339 | int coreid = cvmx_get_core_num(); | |
1340 | u64 base = CVMX_CIU2_EN_PPX_IP2_WRKQ(coreid); | |
1341 | ||
1342 | /* | |
1343 | * Disable All CIU2 Interrupts. The ones we need will be | |
1344 | * enabled later. Read the SUM register so we know the write | |
1345 | * completed. | |
1346 | * | |
1347 | * There are 9 registers and 3 IPX levels with strides 0x1000 | |
1348 | * and 0x200 respectivly. Use loops to clear them. | |
1349 | */ | |
1350 | for (regx = 0; regx <= 0x8000; regx += 0x1000) { | |
1351 | for (ipx = 0; ipx <= 0x400; ipx += 0x200) | |
1352 | cvmx_write_csr(base + regx + ipx, 0); | |
1353 | } | |
1354 | ||
1355 | cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP2(coreid)); | |
1356 | } | |
1357 | ||
078a55fc | 1358 | static void octeon_irq_setup_secondary_ciu(void) |
cd847b78 | 1359 | { |
0c326387 DD |
1360 | octeon_irq_init_ciu_percpu(); |
1361 | octeon_irq_percpu_enable(); | |
5b3b1688 | 1362 | |
0c326387 DD |
1363 | /* Enable the CIU lines */ |
1364 | set_c0_status(STATUSF_IP3 | STATUSF_IP2); | |
64b139f9 DD |
1365 | if (octeon_irq_use_ip4) |
1366 | set_c0_status(STATUSF_IP4); | |
1367 | else | |
1368 | clear_c0_status(STATUSF_IP4); | |
0c326387 | 1369 | } |
5aae1fd4 | 1370 | |
88fd8589 DD |
1371 | static void octeon_irq_setup_secondary_ciu2(void) |
1372 | { | |
1373 | octeon_irq_init_ciu2_percpu(); | |
1374 | octeon_irq_percpu_enable(); | |
1375 | ||
1376 | /* Enable the CIU lines */ | |
1377 | set_c0_status(STATUSF_IP3 | STATUSF_IP2); | |
1378 | if (octeon_irq_use_ip4) | |
1379 | set_c0_status(STATUSF_IP4); | |
1380 | else | |
1381 | clear_c0_status(STATUSF_IP4); | |
1382 | } | |
1383 | ||
64b139f9 DD |
1384 | static int __init octeon_irq_init_ciu( |
1385 | struct device_node *ciu_node, struct device_node *parent) | |
0c326387 | 1386 | { |
64b139f9 | 1387 | unsigned int i, r; |
0c326387 | 1388 | struct irq_chip *chip; |
2e3ecab1 | 1389 | struct irq_chip *chip_edge; |
0c326387 DD |
1390 | struct irq_chip *chip_mbox; |
1391 | struct irq_chip *chip_wd; | |
87161ccd | 1392 | struct irq_domain *ciu_domain = NULL; |
64b139f9 DD |
1393 | struct octeon_irq_ciu_domain_data *dd; |
1394 | ||
1395 | dd = kzalloc(sizeof(*dd), GFP_KERNEL); | |
1396 | if (!dd) | |
1397 | return -ENOMEM; | |
0c326387 DD |
1398 | |
1399 | octeon_irq_init_ciu_percpu(); | |
1400 | octeon_irq_setup_secondary = octeon_irq_setup_secondary_ciu; | |
5aae1fd4 | 1401 | |
1a7e68f2 DD |
1402 | octeon_irq_ip2 = octeon_irq_ip2_ciu; |
1403 | octeon_irq_ip3 = octeon_irq_ip3_ciu; | |
64b139f9 DD |
1404 | if ((OCTEON_IS_OCTEON2() || OCTEON_IS_OCTEON3()) |
1405 | && !OCTEON_IS_MODEL(OCTEON_CN63XX)) { | |
1406 | octeon_irq_ip4 = octeon_irq_ip4_ciu; | |
1407 | dd->num_sum = 3; | |
1408 | octeon_irq_use_ip4 = true; | |
1409 | } else { | |
1410 | octeon_irq_ip4 = octeon_irq_ip4_mask; | |
1411 | dd->num_sum = 2; | |
1412 | octeon_irq_use_ip4 = false; | |
1413 | } | |
0c326387 DD |
1414 | if (OCTEON_IS_MODEL(OCTEON_CN58XX_PASS2_X) || |
1415 | OCTEON_IS_MODEL(OCTEON_CN56XX_PASS2_X) || | |
1416 | OCTEON_IS_MODEL(OCTEON_CN52XX_PASS2_X) || | |
debe6a62 | 1417 | OCTEON_IS_OCTEON2() || OCTEON_IS_OCTEON3()) { |
0c326387 | 1418 | chip = &octeon_irq_chip_ciu_v2; |
2e3ecab1 | 1419 | chip_edge = &octeon_irq_chip_ciu_v2_edge; |
0c326387 DD |
1420 | chip_mbox = &octeon_irq_chip_ciu_mbox_v2; |
1421 | chip_wd = &octeon_irq_chip_ciu_wd_v2; | |
a0c16582 | 1422 | octeon_irq_gpio_chip = &octeon_irq_chip_ciu_gpio_v2; |
0c326387 | 1423 | } else { |
0c326387 | 1424 | chip = &octeon_irq_chip_ciu; |
2e3ecab1 | 1425 | chip_edge = &octeon_irq_chip_ciu_edge; |
0c326387 DD |
1426 | chip_mbox = &octeon_irq_chip_ciu_mbox; |
1427 | chip_wd = &octeon_irq_chip_ciu_wd; | |
a0c16582 | 1428 | octeon_irq_gpio_chip = &octeon_irq_chip_ciu_gpio; |
0c326387 | 1429 | } |
a0c16582 | 1430 | octeon_irq_ciu_chip = chip; |
2e3ecab1 | 1431 | octeon_irq_ciu_chip_edge = chip_edge; |
0c326387 DD |
1432 | |
1433 | /* Mips internal */ | |
1434 | octeon_irq_init_core(); | |
1435 | ||
64b139f9 DD |
1436 | ciu_domain = irq_domain_add_tree( |
1437 | ciu_node, &octeon_irq_domain_ciu_ops, dd); | |
1438 | irq_set_default_host(ciu_domain); | |
87161ccd DD |
1439 | |
1440 | /* CIU_0 */ | |
64b139f9 DD |
1441 | for (i = 0; i < 16; i++) { |
1442 | r = octeon_irq_force_ciu_mapping( | |
1443 | ciu_domain, i + OCTEON_IRQ_WORKQ0, 0, i + 0); | |
1444 | if (r) | |
1445 | goto err; | |
1446 | } | |
1447 | ||
1448 | r = octeon_irq_set_ciu_mapping( | |
1449 | OCTEON_IRQ_MBOX0, 0, 32, 0, chip_mbox, handle_percpu_irq); | |
1450 | if (r) | |
1451 | goto err; | |
1452 | r = octeon_irq_set_ciu_mapping( | |
1453 | OCTEON_IRQ_MBOX1, 0, 33, 0, chip_mbox, handle_percpu_irq); | |
1454 | if (r) | |
1455 | goto err; | |
1456 | ||
1457 | for (i = 0; i < 4; i++) { | |
1458 | r = octeon_irq_force_ciu_mapping( | |
1459 | ciu_domain, i + OCTEON_IRQ_PCI_INT0, 0, i + 36); | |
1460 | if (r) | |
1461 | goto err; | |
1462 | } | |
1463 | for (i = 0; i < 4; i++) { | |
1464 | r = octeon_irq_force_ciu_mapping( | |
1465 | ciu_domain, i + OCTEON_IRQ_PCI_MSI0, 0, i + 40); | |
1466 | if (r) | |
1467 | goto err; | |
1468 | } | |
87161ccd | 1469 | |
64b139f9 DD |
1470 | r = octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_TWSI, 0, 45); |
1471 | if (r) | |
1472 | goto err; | |
87161ccd | 1473 | |
64b139f9 DD |
1474 | r = octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_RML, 0, 46); |
1475 | if (r) | |
1476 | goto err; | |
87161ccd | 1477 | |
64b139f9 DD |
1478 | for (i = 0; i < 4; i++) { |
1479 | r = octeon_irq_force_ciu_mapping( | |
1480 | ciu_domain, i + OCTEON_IRQ_TIMER0, 0, i + 52); | |
1481 | if (r) | |
1482 | goto err; | |
1483 | } | |
1484 | ||
1485 | r = octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_USB0, 0, 56); | |
1486 | if (r) | |
1487 | goto err; | |
87161ccd | 1488 | |
64b139f9 DD |
1489 | r = octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_TWSI2, 0, 59); |
1490 | if (r) | |
1491 | goto err; | |
87161ccd DD |
1492 | |
1493 | /* CIU_1 */ | |
64b139f9 DD |
1494 | for (i = 0; i < 16; i++) { |
1495 | r = octeon_irq_set_ciu_mapping( | |
1496 | i + OCTEON_IRQ_WDOG0, 1, i + 0, 0, chip_wd, | |
1497 | handle_level_irq); | |
1498 | if (r) | |
1499 | goto err; | |
1500 | } | |
87161ccd | 1501 | |
64b139f9 DD |
1502 | r = octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_USB1, 1, 17); |
1503 | if (r) | |
1504 | goto err; | |
a0c16582 | 1505 | |
0c326387 DD |
1506 | /* Enable the CIU lines */ |
1507 | set_c0_status(STATUSF_IP3 | STATUSF_IP2); | |
64b139f9 DD |
1508 | if (octeon_irq_use_ip4) |
1509 | set_c0_status(STATUSF_IP4); | |
1510 | else | |
1511 | clear_c0_status(STATUSF_IP4); | |
1512 | ||
1513 | return 0; | |
1514 | err: | |
1515 | return r; | |
0c326387 | 1516 | } |
5aae1fd4 | 1517 | |
64b139f9 DD |
1518 | static int __init octeon_irq_init_gpio( |
1519 | struct device_node *gpio_node, struct device_node *parent) | |
1520 | { | |
1521 | struct octeon_irq_gpio_domain_data *gpiod; | |
1522 | u32 interrupt_cells; | |
1523 | unsigned int base_hwirq; | |
1524 | int r; | |
1525 | ||
1526 | r = of_property_read_u32(parent, "#interrupt-cells", &interrupt_cells); | |
1527 | if (r) | |
1528 | return r; | |
1529 | ||
1530 | if (interrupt_cells == 1) { | |
1531 | u32 v; | |
1532 | ||
1533 | r = of_property_read_u32_index(gpio_node, "interrupts", 0, &v); | |
1534 | if (r) { | |
1535 | pr_warn("No \"interrupts\" property.\n"); | |
1536 | return r; | |
1537 | } | |
1538 | base_hwirq = v; | |
1539 | } else if (interrupt_cells == 2) { | |
1540 | u32 v0, v1; | |
1541 | ||
1542 | r = of_property_read_u32_index(gpio_node, "interrupts", 0, &v0); | |
1543 | if (r) { | |
1544 | pr_warn("No \"interrupts\" property.\n"); | |
1545 | return r; | |
1546 | } | |
1547 | r = of_property_read_u32_index(gpio_node, "interrupts", 1, &v1); | |
1548 | if (r) { | |
1549 | pr_warn("No \"interrupts\" property.\n"); | |
1550 | return r; | |
1551 | } | |
1552 | base_hwirq = (v0 << 6) | v1; | |
1553 | } else { | |
1554 | pr_warn("Bad \"#interrupt-cells\" property: %u\n", | |
1555 | interrupt_cells); | |
1556 | return -EINVAL; | |
1557 | } | |
1558 | ||
1559 | gpiod = kzalloc(sizeof(*gpiod), GFP_KERNEL); | |
1560 | if (gpiod) { | |
1561 | /* gpio domain host_data is the base hwirq number. */ | |
1562 | gpiod->base_hwirq = base_hwirq; | |
1563 | irq_domain_add_linear( | |
1564 | gpio_node, 16, &octeon_irq_domain_gpio_ops, gpiod); | |
1565 | } else { | |
1566 | pr_warn("Cannot allocate memory for GPIO irq_domain.\n"); | |
1567 | return -ENOMEM; | |
1568 | } | |
1569 | ||
1570 | return 0; | |
1571 | } | |
88fd8589 DD |
1572 | /* |
1573 | * Watchdog interrupts are special. They are associated with a single | |
1574 | * core, so we hardwire the affinity to that core. | |
1575 | */ | |
1576 | static void octeon_irq_ciu2_wd_enable(struct irq_data *data) | |
1577 | { | |
1578 | u64 mask; | |
1579 | u64 en_addr; | |
1580 | int coreid = data->irq - OCTEON_IRQ_WDOG0; | |
64b139f9 | 1581 | struct octeon_ciu_chip_data *cd; |
88fd8589 | 1582 | |
64b139f9 DD |
1583 | cd = irq_data_get_irq_chip_data(data); |
1584 | mask = 1ull << (cd->bit); | |
88fd8589 | 1585 | |
64b139f9 DD |
1586 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) + |
1587 | (0x1000ull * cd->line); | |
88fd8589 DD |
1588 | cvmx_write_csr(en_addr, mask); |
1589 | ||
1590 | } | |
1591 | ||
1592 | static void octeon_irq_ciu2_enable(struct irq_data *data) | |
1593 | { | |
1594 | u64 mask; | |
1595 | u64 en_addr; | |
1596 | int cpu = next_cpu_for_irq(data); | |
1597 | int coreid = octeon_coreid_for_cpu(cpu); | |
64b139f9 | 1598 | struct octeon_ciu_chip_data *cd; |
88fd8589 | 1599 | |
64b139f9 DD |
1600 | cd = irq_data_get_irq_chip_data(data); |
1601 | mask = 1ull << (cd->bit); | |
88fd8589 | 1602 | |
64b139f9 DD |
1603 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) + |
1604 | (0x1000ull * cd->line); | |
88fd8589 DD |
1605 | cvmx_write_csr(en_addr, mask); |
1606 | } | |
1607 | ||
1608 | static void octeon_irq_ciu2_enable_local(struct irq_data *data) | |
1609 | { | |
1610 | u64 mask; | |
1611 | u64 en_addr; | |
1612 | int coreid = cvmx_get_core_num(); | |
64b139f9 | 1613 | struct octeon_ciu_chip_data *cd; |
88fd8589 | 1614 | |
64b139f9 DD |
1615 | cd = irq_data_get_irq_chip_data(data); |
1616 | mask = 1ull << (cd->bit); | |
88fd8589 | 1617 | |
64b139f9 DD |
1618 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) + |
1619 | (0x1000ull * cd->line); | |
88fd8589 DD |
1620 | cvmx_write_csr(en_addr, mask); |
1621 | ||
1622 | } | |
1623 | ||
1624 | static void octeon_irq_ciu2_disable_local(struct irq_data *data) | |
1625 | { | |
1626 | u64 mask; | |
1627 | u64 en_addr; | |
1628 | int coreid = cvmx_get_core_num(); | |
64b139f9 | 1629 | struct octeon_ciu_chip_data *cd; |
88fd8589 | 1630 | |
64b139f9 DD |
1631 | cd = irq_data_get_irq_chip_data(data); |
1632 | mask = 1ull << (cd->bit); | |
88fd8589 | 1633 | |
64b139f9 DD |
1634 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(coreid) + |
1635 | (0x1000ull * cd->line); | |
88fd8589 DD |
1636 | cvmx_write_csr(en_addr, mask); |
1637 | ||
1638 | } | |
1639 | ||
1640 | static void octeon_irq_ciu2_ack(struct irq_data *data) | |
1641 | { | |
1642 | u64 mask; | |
1643 | u64 en_addr; | |
1644 | int coreid = cvmx_get_core_num(); | |
64b139f9 | 1645 | struct octeon_ciu_chip_data *cd; |
88fd8589 | 1646 | |
64b139f9 DD |
1647 | cd = irq_data_get_irq_chip_data(data); |
1648 | mask = 1ull << (cd->bit); | |
88fd8589 | 1649 | |
64b139f9 | 1650 | en_addr = CVMX_CIU2_RAW_PPX_IP2_WRKQ(coreid) + (0x1000ull * cd->line); |
88fd8589 DD |
1651 | cvmx_write_csr(en_addr, mask); |
1652 | ||
1653 | } | |
1654 | ||
1655 | static void octeon_irq_ciu2_disable_all(struct irq_data *data) | |
1656 | { | |
1657 | int cpu; | |
1658 | u64 mask; | |
64b139f9 | 1659 | struct octeon_ciu_chip_data *cd; |
88fd8589 | 1660 | |
64b139f9 DD |
1661 | cd = irq_data_get_irq_chip_data(data); |
1662 | mask = 1ull << (cd->bit); | |
88fd8589 DD |
1663 | |
1664 | for_each_online_cpu(cpu) { | |
64b139f9 DD |
1665 | u64 en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C( |
1666 | octeon_coreid_for_cpu(cpu)) + (0x1000ull * cd->line); | |
88fd8589 DD |
1667 | cvmx_write_csr(en_addr, mask); |
1668 | } | |
1669 | } | |
1670 | ||
1671 | static void octeon_irq_ciu2_mbox_enable_all(struct irq_data *data) | |
1672 | { | |
1673 | int cpu; | |
1674 | u64 mask; | |
1675 | ||
1676 | mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0); | |
1677 | ||
1678 | for_each_online_cpu(cpu) { | |
64b139f9 DD |
1679 | u64 en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1S( |
1680 | octeon_coreid_for_cpu(cpu)); | |
88fd8589 DD |
1681 | cvmx_write_csr(en_addr, mask); |
1682 | } | |
1683 | } | |
1684 | ||
1685 | static void octeon_irq_ciu2_mbox_disable_all(struct irq_data *data) | |
1686 | { | |
1687 | int cpu; | |
1688 | u64 mask; | |
1689 | ||
1690 | mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0); | |
1691 | ||
1692 | for_each_online_cpu(cpu) { | |
64b139f9 DD |
1693 | u64 en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1C( |
1694 | octeon_coreid_for_cpu(cpu)); | |
88fd8589 DD |
1695 | cvmx_write_csr(en_addr, mask); |
1696 | } | |
1697 | } | |
1698 | ||
1699 | static void octeon_irq_ciu2_mbox_enable_local(struct irq_data *data) | |
1700 | { | |
1701 | u64 mask; | |
1702 | u64 en_addr; | |
1703 | int coreid = cvmx_get_core_num(); | |
1704 | ||
1705 | mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0); | |
1706 | en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1S(coreid); | |
1707 | cvmx_write_csr(en_addr, mask); | |
1708 | } | |
1709 | ||
1710 | static void octeon_irq_ciu2_mbox_disable_local(struct irq_data *data) | |
1711 | { | |
1712 | u64 mask; | |
1713 | u64 en_addr; | |
1714 | int coreid = cvmx_get_core_num(); | |
1715 | ||
1716 | mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0); | |
1717 | en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1C(coreid); | |
1718 | cvmx_write_csr(en_addr, mask); | |
1719 | } | |
1720 | ||
1721 | #ifdef CONFIG_SMP | |
1722 | static int octeon_irq_ciu2_set_affinity(struct irq_data *data, | |
1723 | const struct cpumask *dest, bool force) | |
1724 | { | |
1725 | int cpu; | |
1726 | bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data); | |
1727 | u64 mask; | |
64b139f9 | 1728 | struct octeon_ciu_chip_data *cd; |
88fd8589 DD |
1729 | |
1730 | if (!enable_one) | |
1731 | return 0; | |
1732 | ||
64b139f9 DD |
1733 | cd = irq_data_get_irq_chip_data(data); |
1734 | mask = 1ull << cd->bit; | |
88fd8589 DD |
1735 | |
1736 | for_each_online_cpu(cpu) { | |
1737 | u64 en_addr; | |
1738 | if (cpumask_test_cpu(cpu, dest) && enable_one) { | |
1739 | enable_one = false; | |
64b139f9 DD |
1740 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S( |
1741 | octeon_coreid_for_cpu(cpu)) + | |
1742 | (0x1000ull * cd->line); | |
88fd8589 | 1743 | } else { |
64b139f9 DD |
1744 | en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C( |
1745 | octeon_coreid_for_cpu(cpu)) + | |
1746 | (0x1000ull * cd->line); | |
88fd8589 DD |
1747 | } |
1748 | cvmx_write_csr(en_addr, mask); | |
1749 | } | |
1750 | ||
1751 | return 0; | |
1752 | } | |
1753 | #endif | |
1754 | ||
1755 | static void octeon_irq_ciu2_enable_gpio(struct irq_data *data) | |
1756 | { | |
1757 | octeon_irq_gpio_setup(data); | |
1758 | octeon_irq_ciu2_enable(data); | |
1759 | } | |
1760 | ||
1761 | static void octeon_irq_ciu2_disable_gpio(struct irq_data *data) | |
1762 | { | |
64b139f9 | 1763 | struct octeon_ciu_chip_data *cd; |
88fd8589 | 1764 | |
64b139f9 DD |
1765 | cd = irq_data_get_irq_chip_data(data); |
1766 | ||
1767 | cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd->gpio_line), 0); | |
88fd8589 DD |
1768 | |
1769 | octeon_irq_ciu2_disable_all(data); | |
1770 | } | |
1771 | ||
1772 | static struct irq_chip octeon_irq_chip_ciu2 = { | |
2e3ecab1 DD |
1773 | .name = "CIU2-E", |
1774 | .irq_enable = octeon_irq_ciu2_enable, | |
1775 | .irq_disable = octeon_irq_ciu2_disable_all, | |
1776 | .irq_mask = octeon_irq_ciu2_disable_local, | |
1777 | .irq_unmask = octeon_irq_ciu2_enable, | |
1778 | #ifdef CONFIG_SMP | |
1779 | .irq_set_affinity = octeon_irq_ciu2_set_affinity, | |
1780 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, | |
1781 | #endif | |
1782 | }; | |
1783 | ||
1784 | static struct irq_chip octeon_irq_chip_ciu2_edge = { | |
88fd8589 DD |
1785 | .name = "CIU2-E", |
1786 | .irq_enable = octeon_irq_ciu2_enable, | |
1787 | .irq_disable = octeon_irq_ciu2_disable_all, | |
1788 | .irq_ack = octeon_irq_ciu2_ack, | |
1789 | .irq_mask = octeon_irq_ciu2_disable_local, | |
1790 | .irq_unmask = octeon_irq_ciu2_enable, | |
1791 | #ifdef CONFIG_SMP | |
1792 | .irq_set_affinity = octeon_irq_ciu2_set_affinity, | |
1793 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, | |
1794 | #endif | |
1795 | }; | |
1796 | ||
1797 | static struct irq_chip octeon_irq_chip_ciu2_mbox = { | |
1798 | .name = "CIU2-M", | |
1799 | .irq_enable = octeon_irq_ciu2_mbox_enable_all, | |
1800 | .irq_disable = octeon_irq_ciu2_mbox_disable_all, | |
1801 | .irq_ack = octeon_irq_ciu2_mbox_disable_local, | |
1802 | .irq_eoi = octeon_irq_ciu2_mbox_enable_local, | |
1803 | ||
1804 | .irq_cpu_online = octeon_irq_ciu2_mbox_enable_local, | |
1805 | .irq_cpu_offline = octeon_irq_ciu2_mbox_disable_local, | |
1806 | .flags = IRQCHIP_ONOFFLINE_ENABLED, | |
1807 | }; | |
1808 | ||
1809 | static struct irq_chip octeon_irq_chip_ciu2_wd = { | |
1810 | .name = "CIU2-W", | |
1811 | .irq_enable = octeon_irq_ciu2_wd_enable, | |
1812 | .irq_disable = octeon_irq_ciu2_disable_all, | |
1813 | .irq_mask = octeon_irq_ciu2_disable_local, | |
1814 | .irq_unmask = octeon_irq_ciu2_enable_local, | |
1815 | }; | |
1816 | ||
1817 | static struct irq_chip octeon_irq_chip_ciu2_gpio = { | |
1818 | .name = "CIU-GPIO", | |
1819 | .irq_enable = octeon_irq_ciu2_enable_gpio, | |
1820 | .irq_disable = octeon_irq_ciu2_disable_gpio, | |
1821 | .irq_ack = octeon_irq_ciu_gpio_ack, | |
1822 | .irq_mask = octeon_irq_ciu2_disable_local, | |
1823 | .irq_unmask = octeon_irq_ciu2_enable, | |
1824 | .irq_set_type = octeon_irq_ciu_gpio_set_type, | |
1825 | #ifdef CONFIG_SMP | |
1826 | .irq_set_affinity = octeon_irq_ciu2_set_affinity, | |
1827 | .irq_cpu_offline = octeon_irq_cpu_offline_ciu, | |
1828 | #endif | |
1829 | .flags = IRQCHIP_SET_TYPE_MASKED, | |
1830 | }; | |
1831 | ||
1832 | static int octeon_irq_ciu2_xlat(struct irq_domain *d, | |
1833 | struct device_node *node, | |
1834 | const u32 *intspec, | |
1835 | unsigned int intsize, | |
1836 | unsigned long *out_hwirq, | |
1837 | unsigned int *out_type) | |
1838 | { | |
1839 | unsigned int ciu, bit; | |
1840 | ||
1841 | ciu = intspec[0]; | |
1842 | bit = intspec[1]; | |
1843 | ||
88fd8589 DD |
1844 | *out_hwirq = (ciu << 6) | bit; |
1845 | *out_type = 0; | |
1846 | ||
1847 | return 0; | |
1848 | } | |
1849 | ||
1850 | static bool octeon_irq_ciu2_is_edge(unsigned int line, unsigned int bit) | |
1851 | { | |
1852 | bool edge = false; | |
1853 | ||
1854 | if (line == 3) /* MIO */ | |
1855 | switch (bit) { | |
70342287 | 1856 | case 2: /* IPD_DRP */ |
88fd8589 DD |
1857 | case 8 ... 11: /* Timers */ |
1858 | case 48: /* PTP */ | |
1859 | edge = true; | |
1860 | break; | |
1861 | default: | |
1862 | break; | |
1863 | } | |
1864 | else if (line == 6) /* PKT */ | |
1865 | switch (bit) { | |
1866 | case 52 ... 53: /* ILK_DRP */ | |
70342287 | 1867 | case 8 ... 12: /* GMX_DRP */ |
88fd8589 DD |
1868 | edge = true; |
1869 | break; | |
1870 | default: | |
1871 | break; | |
1872 | } | |
1873 | return edge; | |
1874 | } | |
1875 | ||
1876 | static int octeon_irq_ciu2_map(struct irq_domain *d, | |
1877 | unsigned int virq, irq_hw_number_t hw) | |
1878 | { | |
1879 | unsigned int line = hw >> 6; | |
1880 | unsigned int bit = hw & 63; | |
1881 | ||
2eddb708 AH |
1882 | /* |
1883 | * Don't map irq if it is reserved for GPIO. | |
1884 | * (Line 7 are the GPIO lines.) | |
1885 | */ | |
1886 | if (line == 7) | |
1887 | return 0; | |
1888 | ||
1889 | if (line > 7 || octeon_irq_ciu_to_irq[line][bit] != 0) | |
88fd8589 DD |
1890 | return -EINVAL; |
1891 | ||
1892 | if (octeon_irq_ciu2_is_edge(line, bit)) | |
1893 | octeon_irq_set_ciu_mapping(virq, line, bit, 0, | |
2e3ecab1 | 1894 | &octeon_irq_chip_ciu2_edge, |
88fd8589 DD |
1895 | handle_edge_irq); |
1896 | else | |
1897 | octeon_irq_set_ciu_mapping(virq, line, bit, 0, | |
1898 | &octeon_irq_chip_ciu2, | |
1899 | handle_level_irq); | |
1900 | ||
1901 | return 0; | |
1902 | } | |
88fd8589 DD |
1903 | |
1904 | static struct irq_domain_ops octeon_irq_domain_ciu2_ops = { | |
1905 | .map = octeon_irq_ciu2_map, | |
64b139f9 | 1906 | .unmap = octeon_irq_free_cd, |
88fd8589 DD |
1907 | .xlate = octeon_irq_ciu2_xlat, |
1908 | }; | |
1909 | ||
88fd8589 DD |
1910 | static void octeon_irq_ciu2(void) |
1911 | { | |
1912 | int line; | |
1913 | int bit; | |
1914 | int irq; | |
1915 | u64 src_reg, src, sum; | |
1916 | const unsigned long core_id = cvmx_get_core_num(); | |
1917 | ||
1918 | sum = cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP2(core_id)) & 0xfful; | |
1919 | ||
1920 | if (unlikely(!sum)) | |
1921 | goto spurious; | |
1922 | ||
1923 | line = fls64(sum) - 1; | |
1924 | src_reg = CVMX_CIU2_SRC_PPX_IP2_WRKQ(core_id) + (0x1000 * line); | |
1925 | src = cvmx_read_csr(src_reg); | |
1926 | ||
1927 | if (unlikely(!src)) | |
1928 | goto spurious; | |
1929 | ||
1930 | bit = fls64(src) - 1; | |
1931 | irq = octeon_irq_ciu_to_irq[line][bit]; | |
1932 | if (unlikely(!irq)) | |
1933 | goto spurious; | |
1934 | ||
1935 | do_IRQ(irq); | |
1936 | goto out; | |
1937 | ||
1938 | spurious: | |
1939 | spurious_interrupt(); | |
1940 | out: | |
1941 | /* CN68XX pass 1.x has an errata that accessing the ACK registers | |
1942 | can stop interrupts from propagating */ | |
1943 | if (OCTEON_IS_MODEL(OCTEON_CN68XX)) | |
1944 | cvmx_read_csr(CVMX_CIU2_INTR_CIU_READY); | |
1945 | else | |
1946 | cvmx_read_csr(CVMX_CIU2_ACK_PPX_IP2(core_id)); | |
1947 | return; | |
1948 | } | |
1949 | ||
1950 | static void octeon_irq_ciu2_mbox(void) | |
1951 | { | |
1952 | int line; | |
1953 | ||
1954 | const unsigned long core_id = cvmx_get_core_num(); | |
1955 | u64 sum = cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP3(core_id)) >> 60; | |
1956 | ||
1957 | if (unlikely(!sum)) | |
1958 | goto spurious; | |
1959 | ||
1960 | line = fls64(sum) - 1; | |
1961 | ||
1962 | do_IRQ(OCTEON_IRQ_MBOX0 + line); | |
1963 | goto out; | |
1964 | ||
1965 | spurious: | |
1966 | spurious_interrupt(); | |
1967 | out: | |
1968 | /* CN68XX pass 1.x has an errata that accessing the ACK registers | |
1969 | can stop interrupts from propagating */ | |
1970 | if (OCTEON_IS_MODEL(OCTEON_CN68XX)) | |
1971 | cvmx_read_csr(CVMX_CIU2_INTR_CIU_READY); | |
1972 | else | |
1973 | cvmx_read_csr(CVMX_CIU2_ACK_PPX_IP3(core_id)); | |
1974 | return; | |
1975 | } | |
1976 | ||
64b139f9 DD |
1977 | static int __init octeon_irq_init_ciu2( |
1978 | struct device_node *ciu_node, struct device_node *parent) | |
88fd8589 | 1979 | { |
64b139f9 | 1980 | unsigned int i, r; |
88fd8589 DD |
1981 | struct irq_domain *ciu_domain = NULL; |
1982 | ||
1983 | octeon_irq_init_ciu2_percpu(); | |
1984 | octeon_irq_setup_secondary = octeon_irq_setup_secondary_ciu2; | |
1985 | ||
64b139f9 | 1986 | octeon_irq_gpio_chip = &octeon_irq_chip_ciu2_gpio; |
88fd8589 DD |
1987 | octeon_irq_ip2 = octeon_irq_ciu2; |
1988 | octeon_irq_ip3 = octeon_irq_ciu2_mbox; | |
1989 | octeon_irq_ip4 = octeon_irq_ip4_mask; | |
1990 | ||
1991 | /* Mips internal */ | |
1992 | octeon_irq_init_core(); | |
1993 | ||
64b139f9 DD |
1994 | ciu_domain = irq_domain_add_tree( |
1995 | ciu_node, &octeon_irq_domain_ciu2_ops, NULL); | |
1996 | irq_set_default_host(ciu_domain); | |
88fd8589 DD |
1997 | |
1998 | /* CUI2 */ | |
64b139f9 DD |
1999 | for (i = 0; i < 64; i++) { |
2000 | r = octeon_irq_force_ciu_mapping( | |
2001 | ciu_domain, i + OCTEON_IRQ_WORKQ0, 0, i); | |
2002 | if (r) | |
2003 | goto err; | |
2004 | } | |
88fd8589 | 2005 | |
64b139f9 DD |
2006 | for (i = 0; i < 32; i++) { |
2007 | r = octeon_irq_set_ciu_mapping(i + OCTEON_IRQ_WDOG0, 1, i, 0, | |
2008 | &octeon_irq_chip_ciu2_wd, handle_level_irq); | |
2009 | if (r) | |
2010 | goto err; | |
2011 | } | |
88fd8589 | 2012 | |
64b139f9 DD |
2013 | for (i = 0; i < 4; i++) { |
2014 | r = octeon_irq_force_ciu_mapping( | |
2015 | ciu_domain, i + OCTEON_IRQ_TIMER0, 3, i + 8); | |
2016 | if (r) | |
2017 | goto err; | |
2018 | } | |
88fd8589 | 2019 | |
64b139f9 DD |
2020 | r = octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_USB0, 3, 44); |
2021 | if (r) | |
2022 | goto err; | |
88fd8589 | 2023 | |
64b139f9 DD |
2024 | for (i = 0; i < 4; i++) { |
2025 | r = octeon_irq_force_ciu_mapping( | |
2026 | ciu_domain, i + OCTEON_IRQ_PCI_INT0, 4, i); | |
2027 | if (r) | |
2028 | goto err; | |
2029 | } | |
88fd8589 | 2030 | |
64b139f9 DD |
2031 | for (i = 0; i < 4; i++) { |
2032 | r = octeon_irq_force_ciu_mapping( | |
2033 | ciu_domain, i + OCTEON_IRQ_PCI_MSI0, 4, i + 8); | |
2034 | if (r) | |
2035 | goto err; | |
2036 | } | |
88fd8589 DD |
2037 | |
2038 | irq_set_chip_and_handler(OCTEON_IRQ_MBOX0, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq); | |
2039 | irq_set_chip_and_handler(OCTEON_IRQ_MBOX1, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq); | |
2040 | irq_set_chip_and_handler(OCTEON_IRQ_MBOX2, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq); | |
2041 | irq_set_chip_and_handler(OCTEON_IRQ_MBOX3, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq); | |
2042 | ||
2043 | /* Enable the CIU lines */ | |
2044 | set_c0_status(STATUSF_IP3 | STATUSF_IP2); | |
2045 | clear_c0_status(STATUSF_IP4); | |
64b139f9 DD |
2046 | return 0; |
2047 | err: | |
2048 | return r; | |
2049 | } | |
2050 | ||
2051 | struct octeon_irq_cib_host_data { | |
2052 | raw_spinlock_t lock; | |
2053 | u64 raw_reg; | |
2054 | u64 en_reg; | |
2055 | int max_bits; | |
2056 | }; | |
2057 | ||
2058 | struct octeon_irq_cib_chip_data { | |
2059 | struct octeon_irq_cib_host_data *host_data; | |
2060 | int bit; | |
2061 | }; | |
2062 | ||
2063 | static void octeon_irq_cib_enable(struct irq_data *data) | |
2064 | { | |
2065 | unsigned long flags; | |
2066 | u64 en; | |
2067 | struct octeon_irq_cib_chip_data *cd = irq_data_get_irq_chip_data(data); | |
2068 | struct octeon_irq_cib_host_data *host_data = cd->host_data; | |
2069 | ||
2070 | raw_spin_lock_irqsave(&host_data->lock, flags); | |
2071 | en = cvmx_read_csr(host_data->en_reg); | |
2072 | en |= 1ull << cd->bit; | |
2073 | cvmx_write_csr(host_data->en_reg, en); | |
2074 | raw_spin_unlock_irqrestore(&host_data->lock, flags); | |
88fd8589 DD |
2075 | } |
2076 | ||
64b139f9 DD |
2077 | static void octeon_irq_cib_disable(struct irq_data *data) |
2078 | { | |
2079 | unsigned long flags; | |
2080 | u64 en; | |
2081 | struct octeon_irq_cib_chip_data *cd = irq_data_get_irq_chip_data(data); | |
2082 | struct octeon_irq_cib_host_data *host_data = cd->host_data; | |
2083 | ||
2084 | raw_spin_lock_irqsave(&host_data->lock, flags); | |
2085 | en = cvmx_read_csr(host_data->en_reg); | |
2086 | en &= ~(1ull << cd->bit); | |
2087 | cvmx_write_csr(host_data->en_reg, en); | |
2088 | raw_spin_unlock_irqrestore(&host_data->lock, flags); | |
2089 | } | |
2090 | ||
2091 | static int octeon_irq_cib_set_type(struct irq_data *data, unsigned int t) | |
2092 | { | |
2093 | irqd_set_trigger_type(data, t); | |
2094 | return IRQ_SET_MASK_OK; | |
2095 | } | |
2096 | ||
2097 | static struct irq_chip octeon_irq_chip_cib = { | |
2098 | .name = "CIB", | |
2099 | .irq_enable = octeon_irq_cib_enable, | |
2100 | .irq_disable = octeon_irq_cib_disable, | |
2101 | .irq_mask = octeon_irq_cib_disable, | |
2102 | .irq_unmask = octeon_irq_cib_enable, | |
2103 | .irq_set_type = octeon_irq_cib_set_type, | |
2104 | }; | |
2105 | ||
2106 | static int octeon_irq_cib_xlat(struct irq_domain *d, | |
2107 | struct device_node *node, | |
2108 | const u32 *intspec, | |
2109 | unsigned int intsize, | |
2110 | unsigned long *out_hwirq, | |
2111 | unsigned int *out_type) | |
2112 | { | |
2113 | unsigned int type = 0; | |
2114 | ||
2115 | if (intsize == 2) | |
2116 | type = intspec[1]; | |
2117 | ||
2118 | switch (type) { | |
2119 | case 0: /* unofficial value, but we might as well let it work. */ | |
2120 | case 4: /* official value for level triggering. */ | |
2121 | *out_type = IRQ_TYPE_LEVEL_HIGH; | |
2122 | break; | |
2123 | case 1: /* official value for edge triggering. */ | |
2124 | *out_type = IRQ_TYPE_EDGE_RISING; | |
2125 | break; | |
2126 | default: /* Nothing else is acceptable. */ | |
2127 | return -EINVAL; | |
2128 | } | |
2129 | ||
2130 | *out_hwirq = intspec[0]; | |
2131 | ||
2132 | return 0; | |
2133 | } | |
2134 | ||
2135 | static int octeon_irq_cib_map(struct irq_domain *d, | |
2136 | unsigned int virq, irq_hw_number_t hw) | |
2137 | { | |
2138 | struct octeon_irq_cib_host_data *host_data = d->host_data; | |
2139 | struct octeon_irq_cib_chip_data *cd; | |
2140 | ||
2141 | if (hw >= host_data->max_bits) { | |
2142 | pr_err("ERROR: %s mapping %u is to big!\n", | |
5d4c9bc7 | 2143 | irq_domain_get_of_node(d)->name, (unsigned)hw); |
64b139f9 DD |
2144 | return -EINVAL; |
2145 | } | |
2146 | ||
2147 | cd = kzalloc(sizeof(*cd), GFP_KERNEL); | |
2148 | cd->host_data = host_data; | |
2149 | cd->bit = hw; | |
2150 | ||
2151 | irq_set_chip_and_handler(virq, &octeon_irq_chip_cib, | |
2152 | handle_simple_irq); | |
2153 | irq_set_chip_data(virq, cd); | |
2154 | return 0; | |
2155 | } | |
2156 | ||
2157 | static struct irq_domain_ops octeon_irq_domain_cib_ops = { | |
2158 | .map = octeon_irq_cib_map, | |
2159 | .unmap = octeon_irq_free_cd, | |
2160 | .xlate = octeon_irq_cib_xlat, | |
2161 | }; | |
2162 | ||
2163 | /* Chain to real handler. */ | |
2164 | static irqreturn_t octeon_irq_cib_handler(int my_irq, void *data) | |
2165 | { | |
2166 | u64 en; | |
2167 | u64 raw; | |
2168 | u64 bits; | |
2169 | int i; | |
2170 | int irq; | |
2171 | struct irq_domain *cib_domain = data; | |
2172 | struct octeon_irq_cib_host_data *host_data = cib_domain->host_data; | |
2173 | ||
2174 | en = cvmx_read_csr(host_data->en_reg); | |
2175 | raw = cvmx_read_csr(host_data->raw_reg); | |
2176 | ||
2177 | bits = en & raw; | |
2178 | ||
2179 | for (i = 0; i < host_data->max_bits; i++) { | |
2180 | if ((bits & 1ull << i) == 0) | |
2181 | continue; | |
2182 | irq = irq_find_mapping(cib_domain, i); | |
2183 | if (!irq) { | |
2184 | unsigned long flags; | |
2185 | ||
2186 | pr_err("ERROR: CIB bit %d@%llx IRQ unhandled, disabling\n", | |
2187 | i, host_data->raw_reg); | |
2188 | raw_spin_lock_irqsave(&host_data->lock, flags); | |
2189 | en = cvmx_read_csr(host_data->en_reg); | |
2190 | en &= ~(1ull << i); | |
2191 | cvmx_write_csr(host_data->en_reg, en); | |
2192 | cvmx_write_csr(host_data->raw_reg, 1ull << i); | |
2193 | raw_spin_unlock_irqrestore(&host_data->lock, flags); | |
2194 | } else { | |
2195 | struct irq_desc *desc = irq_to_desc(irq); | |
2196 | struct irq_data *irq_data = irq_desc_get_irq_data(desc); | |
2197 | /* If edge, acknowledge the bit we will be sending. */ | |
2198 | if (irqd_get_trigger_type(irq_data) & | |
2199 | IRQ_TYPE_EDGE_BOTH) | |
2200 | cvmx_write_csr(host_data->raw_reg, 1ull << i); | |
bd0b9ac4 | 2201 | generic_handle_irq_desc(desc); |
64b139f9 DD |
2202 | } |
2203 | } | |
2204 | ||
2205 | return IRQ_HANDLED; | |
2206 | } | |
2207 | ||
2208 | static int __init octeon_irq_init_cib(struct device_node *ciu_node, | |
2209 | struct device_node *parent) | |
2210 | { | |
2211 | const __be32 *addr; | |
2212 | u32 val; | |
2213 | struct octeon_irq_cib_host_data *host_data; | |
2214 | int parent_irq; | |
2215 | int r; | |
2216 | struct irq_domain *cib_domain; | |
2217 | ||
2218 | parent_irq = irq_of_parse_and_map(ciu_node, 0); | |
2219 | if (!parent_irq) { | |
2220 | pr_err("ERROR: Couldn't acquire parent_irq for %s\n.", | |
2221 | ciu_node->name); | |
2222 | return -EINVAL; | |
2223 | } | |
2224 | ||
2225 | host_data = kzalloc(sizeof(*host_data), GFP_KERNEL); | |
2226 | raw_spin_lock_init(&host_data->lock); | |
2227 | ||
2228 | addr = of_get_address(ciu_node, 0, NULL, NULL); | |
2229 | if (!addr) { | |
2230 | pr_err("ERROR: Couldn't acquire reg(0) %s\n.", ciu_node->name); | |
2231 | return -EINVAL; | |
2232 | } | |
2233 | host_data->raw_reg = (u64)phys_to_virt( | |
2234 | of_translate_address(ciu_node, addr)); | |
2235 | ||
2236 | addr = of_get_address(ciu_node, 1, NULL, NULL); | |
2237 | if (!addr) { | |
2238 | pr_err("ERROR: Couldn't acquire reg(1) %s\n.", ciu_node->name); | |
2239 | return -EINVAL; | |
2240 | } | |
2241 | host_data->en_reg = (u64)phys_to_virt( | |
2242 | of_translate_address(ciu_node, addr)); | |
2243 | ||
2244 | r = of_property_read_u32(ciu_node, "cavium,max-bits", &val); | |
2245 | if (r) { | |
2246 | pr_err("ERROR: Couldn't read cavium,max-bits from %s\n.", | |
2247 | ciu_node->name); | |
2248 | return r; | |
2249 | } | |
2250 | host_data->max_bits = val; | |
2251 | ||
2252 | cib_domain = irq_domain_add_linear(ciu_node, host_data->max_bits, | |
2253 | &octeon_irq_domain_cib_ops, | |
2254 | host_data); | |
2255 | if (!cib_domain) { | |
2256 | pr_err("ERROR: Couldn't irq_domain_add_linear()\n."); | |
2257 | return -ENOMEM; | |
2258 | } | |
2259 | ||
2260 | cvmx_write_csr(host_data->en_reg, 0); /* disable all IRQs */ | |
2261 | cvmx_write_csr(host_data->raw_reg, ~0); /* ack any outstanding */ | |
2262 | ||
2263 | r = request_irq(parent_irq, octeon_irq_cib_handler, | |
2264 | IRQF_NO_THREAD, "cib", cib_domain); | |
2265 | if (r) { | |
2266 | pr_err("request_irq cib failed %d\n", r); | |
2267 | return r; | |
2268 | } | |
2269 | pr_info("CIB interrupt controller probed: %llx %d\n", | |
2270 | host_data->raw_reg, host_data->max_bits); | |
2271 | return 0; | |
2272 | } | |
2273 | ||
2274 | static struct of_device_id ciu_types[] __initdata = { | |
2275 | {.compatible = "cavium,octeon-3860-ciu", .data = octeon_irq_init_ciu}, | |
2276 | {.compatible = "cavium,octeon-3860-gpio", .data = octeon_irq_init_gpio}, | |
2277 | {.compatible = "cavium,octeon-6880-ciu2", .data = octeon_irq_init_ciu2}, | |
2278 | {.compatible = "cavium,octeon-7130-cib", .data = octeon_irq_init_cib}, | |
2279 | {} | |
2280 | }; | |
2281 | ||
5b3b1688 DD |
2282 | void __init arch_init_irq(void) |
2283 | { | |
5b3b1688 DD |
2284 | #ifdef CONFIG_SMP |
2285 | /* Set the default affinity to the boot cpu. */ | |
2286 | cpumask_clear(irq_default_affinity); | |
2287 | cpumask_set_cpu(smp_processor_id(), irq_default_affinity); | |
2288 | #endif | |
64b139f9 | 2289 | of_irq_init(ciu_types); |
5b3b1688 DD |
2290 | } |
2291 | ||
2292 | asmlinkage void plat_irq_dispatch(void) | |
2293 | { | |
5b3b1688 DD |
2294 | unsigned long cop0_cause; |
2295 | unsigned long cop0_status; | |
5b3b1688 DD |
2296 | |
2297 | while (1) { | |
2298 | cop0_cause = read_c0_cause(); | |
2299 | cop0_status = read_c0_status(); | |
2300 | cop0_cause &= cop0_status; | |
2301 | cop0_cause &= ST0_IM; | |
2302 | ||
64b139f9 | 2303 | if (cop0_cause & STATUSF_IP2) |
0c326387 | 2304 | octeon_irq_ip2(); |
64b139f9 | 2305 | else if (cop0_cause & STATUSF_IP3) |
0c326387 | 2306 | octeon_irq_ip3(); |
64b139f9 | 2307 | else if (cop0_cause & STATUSF_IP4) |
0c326387 | 2308 | octeon_irq_ip4(); |
64b139f9 | 2309 | else if (cop0_cause) |
5b3b1688 | 2310 | do_IRQ(fls(cop0_cause) - 9 + MIPS_CPU_IRQ_BASE); |
0c326387 | 2311 | else |
5b3b1688 | 2312 | break; |
5b3b1688 DD |
2313 | } |
2314 | } | |
773cb77d RB |
2315 | |
2316 | #ifdef CONFIG_HOTPLUG_CPU | |
773cb77d | 2317 | |
17efb59a | 2318 | void octeon_fixup_irqs(void) |
773cb77d | 2319 | { |
0c326387 | 2320 | irq_cpu_offline(); |
773cb77d RB |
2321 | } |
2322 | ||
2323 | #endif /* CONFIG_HOTPLUG_CPU */ |