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Konrad Eisele5213a782009-08-17 00:13:29 +00001/*
2 * Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
3 * Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
4 */
5
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/errno.h>
9#include <linux/mutex.h>
Konrad Eisele5213a782009-08-17 00:13:29 +000010#include <linux/of.h>
11#include <linux/of_platform.h>
12#include <linux/interrupt.h>
13#include <linux/of_device.h>
Konrad Eisele84017072009-08-31 22:08:13 +000014
Konrad Eisele5213a782009-08-17 00:13:29 +000015#include <asm/oplib.h>
16#include <asm/timer.h>
17#include <asm/prom.h>
18#include <asm/leon.h>
19#include <asm/leon_amba.h>
Konrad Eisele84017072009-08-31 22:08:13 +000020#include <asm/traps.h>
21#include <asm/cacheflush.h>
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000022#include <asm/smp.h>
Daniel Hellstrom01dae0f2011-04-21 04:20:24 +000023#include <asm/setup.h>
Konrad Eisele5213a782009-08-17 00:13:29 +000024
25#include "prom.h"
26#include "irq.h"
27
Daniel Hellstrom53aea7c2011-01-04 01:41:29 +000028struct leon3_irqctrl_regs_map *leon3_irqctrl_regs; /* interrupt controller base address */
29struct leon3_gptimer_regs_map *leon3_gptimer_regs; /* timer controller base address */
Konrad Eisele5213a782009-08-17 00:13:29 +000030
31int leondebug_irq_disable;
32int leon_debug_irqout;
33static int dummy_master_l10_counter;
Daniel Hellstrom7279b822011-01-27 01:26:58 +000034unsigned long amba_system_id;
Daniel Hellstromd61a38b2011-04-19 23:41:21 +000035static DEFINE_SPINLOCK(leon_irq_lock);
Konrad Eisele5213a782009-08-17 00:13:29 +000036
Daniel Hellstrom53aea7c2011-01-04 01:41:29 +000037unsigned long leon3_gptimer_irq; /* interrupt controller irq number */
Daniel Hellstrom2791c1a2011-01-04 01:41:32 +000038unsigned long leon3_gptimer_idx; /* Timer Index (0..6) within Timer Core */
Daniel Hellstrom2cf95302011-04-19 23:41:23 +000039int leon3_ticker_irq; /* Timer ticker IRQ */
Konrad Eisele5213a782009-08-17 00:13:29 +000040unsigned int sparc_leon_eirq;
Daniel Hellstroma481b5d2011-04-19 23:41:25 +000041#define LEON_IMASK(cpu) (&leon3_irqctrl_regs->mask[cpu])
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000042#define LEON_IACK (&leon3_irqctrl_regs->iclear)
43#define LEON_DO_ACK_HW 1
Konrad Eisele5213a782009-08-17 00:13:29 +000044
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000045/* Return the last ACKed IRQ by the Extended IRQ controller. It has already
46 * been (automatically) ACKed when the CPU takes the trap.
47 */
48static inline unsigned int leon_eirq_get(int cpu)
Konrad Eisele5213a782009-08-17 00:13:29 +000049{
50 return LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->intid[cpu]) & 0x1f;
51}
52
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000053/* Handle one or multiple IRQs from the extended interrupt controller */
54static void leon_handle_ext_irq(unsigned int irq, struct irq_desc *desc)
Konrad Eisele5213a782009-08-17 00:13:29 +000055{
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000056 unsigned int eirq;
Daniel Hellstrom01dae0f2011-04-21 04:20:24 +000057 int cpu = sparc_leon3_cpuid();
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000058
59 eirq = leon_eirq_get(cpu);
60 if ((eirq & 0x10) && irq_map[eirq]->irq) /* bit4 tells if IRQ happened */
61 generic_handle_irq(irq_map[eirq]->irq);
Konrad Eisele5213a782009-08-17 00:13:29 +000062}
63
64/* The extended IRQ controller has been found, this function registers it */
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000065void leon_eirq_setup(unsigned int eirq)
Konrad Eisele5213a782009-08-17 00:13:29 +000066{
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000067 unsigned long mask, oldmask;
68 unsigned int veirq;
Konrad Eisele5213a782009-08-17 00:13:29 +000069
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000070 if (eirq < 1 || eirq > 0xf) {
71 printk(KERN_ERR "LEON EXT IRQ NUMBER BAD: %d\n", eirq);
72 return;
Konrad Eisele5213a782009-08-17 00:13:29 +000073 }
74
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000075 veirq = leon_build_device_irq(eirq, leon_handle_ext_irq, "extirq", 0);
76
77 /*
78 * Unmask the Extended IRQ, the IRQs routed through the Ext-IRQ
79 * controller have a mask-bit of their own, so this is safe.
80 */
81 irq_link(veirq);
82 mask = 1 << eirq;
Daniel Hellstrom01dae0f2011-04-21 04:20:24 +000083 oldmask = LEON3_BYPASS_LOAD_PA(LEON_IMASK(boot_cpu_id));
84 LEON3_BYPASS_STORE_PA(LEON_IMASK(boot_cpu_id), (oldmask | mask));
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +000085 sparc_leon_eirq = eirq;
Konrad Eisele5213a782009-08-17 00:13:29 +000086}
87
88static inline unsigned long get_irqmask(unsigned int irq)
89{
90 unsigned long mask;
91
92 if (!irq || ((irq > 0xf) && !sparc_leon_eirq)
93 || ((irq > 0x1f) && sparc_leon_eirq)) {
94 printk(KERN_ERR
95 "leon_get_irqmask: false irq number: %d\n", irq);
96 mask = 0;
97 } else {
98 mask = LEON_HARD_INT(irq);
99 }
100 return mask;
101}
102
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000103#ifdef CONFIG_SMP
104static int irq_choose_cpu(const struct cpumask *affinity)
105{
106 cpumask_t mask;
107
108 cpus_and(mask, cpu_online_map, *affinity);
109 if (cpus_equal(mask, cpu_online_map) || cpus_empty(mask))
Daniel Hellstrom01dae0f2011-04-21 04:20:24 +0000110 return boot_cpu_id;
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000111 else
112 return first_cpu(mask);
113}
114#else
Daniel Hellstrom01dae0f2011-04-21 04:20:24 +0000115#define irq_choose_cpu(affinity) boot_cpu_id
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000116#endif
117
118static int leon_set_affinity(struct irq_data *data, const struct cpumask *dest,
119 bool force)
120{
121 unsigned long mask, oldmask, flags;
122 int oldcpu, newcpu;
123
124 mask = (unsigned long)data->chip_data;
125 oldcpu = irq_choose_cpu(data->affinity);
126 newcpu = irq_choose_cpu(dest);
127
128 if (oldcpu == newcpu)
129 goto out;
130
131 /* unmask on old CPU first before enabling on the selected CPU */
132 spin_lock_irqsave(&leon_irq_lock, flags);
133 oldmask = LEON3_BYPASS_LOAD_PA(LEON_IMASK(oldcpu));
134 LEON3_BYPASS_STORE_PA(LEON_IMASK(oldcpu), (oldmask & ~mask));
135 oldmask = LEON3_BYPASS_LOAD_PA(LEON_IMASK(newcpu));
136 LEON3_BYPASS_STORE_PA(LEON_IMASK(newcpu), (oldmask | mask));
137 spin_unlock_irqrestore(&leon_irq_lock, flags);
138out:
139 return IRQ_SET_MASK_OK;
140}
141
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000142static void leon_unmask_irq(struct irq_data *data)
Konrad Eisele5213a782009-08-17 00:13:29 +0000143{
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000144 unsigned long mask, oldmask, flags;
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000145 int cpu;
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000146
147 mask = (unsigned long)data->chip_data;
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000148 cpu = irq_choose_cpu(data->affinity);
Daniel Hellstromd61a38b2011-04-19 23:41:21 +0000149 spin_lock_irqsave(&leon_irq_lock, flags);
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000150 oldmask = LEON3_BYPASS_LOAD_PA(LEON_IMASK(cpu));
151 LEON3_BYPASS_STORE_PA(LEON_IMASK(cpu), (oldmask | mask));
Daniel Hellstromd61a38b2011-04-19 23:41:21 +0000152 spin_unlock_irqrestore(&leon_irq_lock, flags);
Konrad Eisele5213a782009-08-17 00:13:29 +0000153}
154
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000155static void leon_mask_irq(struct irq_data *data)
Konrad Eisele5213a782009-08-17 00:13:29 +0000156{
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000157 unsigned long mask, oldmask, flags;
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000158 int cpu;
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000159
160 mask = (unsigned long)data->chip_data;
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000161 cpu = irq_choose_cpu(data->affinity);
Daniel Hellstromd61a38b2011-04-19 23:41:21 +0000162 spin_lock_irqsave(&leon_irq_lock, flags);
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000163 oldmask = LEON3_BYPASS_LOAD_PA(LEON_IMASK(cpu));
164 LEON3_BYPASS_STORE_PA(LEON_IMASK(cpu), (oldmask & ~mask));
Daniel Hellstromd61a38b2011-04-19 23:41:21 +0000165 spin_unlock_irqrestore(&leon_irq_lock, flags);
Konrad Eisele5213a782009-08-17 00:13:29 +0000166}
167
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000168static unsigned int leon_startup_irq(struct irq_data *data)
169{
170 irq_link(data->irq);
171 leon_unmask_irq(data);
172 return 0;
173}
174
175static void leon_shutdown_irq(struct irq_data *data)
176{
177 leon_mask_irq(data);
178 irq_unlink(data->irq);
179}
180
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +0000181/* Used by external level sensitive IRQ handlers on the LEON: ACK IRQ ctrl */
182static void leon_eoi_irq(struct irq_data *data)
183{
184 unsigned long mask = (unsigned long)data->chip_data;
185
186 if (mask & LEON_DO_ACK_HW)
187 LEON3_BYPASS_STORE_PA(LEON_IACK, mask & ~LEON_DO_ACK_HW);
188}
189
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000190static struct irq_chip leon_irq = {
Daniel Hellstrom5eb1f4fc2011-04-19 23:41:26 +0000191 .name = "leon",
192 .irq_startup = leon_startup_irq,
193 .irq_shutdown = leon_shutdown_irq,
194 .irq_mask = leon_mask_irq,
195 .irq_unmask = leon_unmask_irq,
196 .irq_eoi = leon_eoi_irq,
197 .irq_set_affinity = leon_set_affinity,
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000198};
199
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +0000200/*
201 * Build a LEON IRQ for the edge triggered LEON IRQ controller:
202 * Edge (normal) IRQ - handle_simple_irq, ack=DONT-CARE, never ack
203 * Level IRQ (PCI|Level-GPIO) - handle_fasteoi_irq, ack=1, ack after ISR
204 * Per-CPU Edge - handle_percpu_irq, ack=0
205 */
206unsigned int leon_build_device_irq(unsigned int real_irq,
207 irq_flow_handler_t flow_handler,
208 const char *name, int do_ack)
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000209{
210 unsigned int irq;
211 unsigned long mask;
212
213 irq = 0;
214 mask = get_irqmask(real_irq);
215 if (mask == 0)
216 goto out;
217
218 irq = irq_alloc(real_irq, real_irq);
219 if (irq == 0)
220 goto out;
221
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +0000222 if (do_ack)
223 mask |= LEON_DO_ACK_HW;
224
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000225 irq_set_chip_and_handler_name(irq, &leon_irq,
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +0000226 flow_handler, name);
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000227 irq_set_chip_data(irq, (void *)mask);
228
229out:
230 return irq;
231}
232
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +0000233static unsigned int _leon_build_device_irq(struct platform_device *op,
234 unsigned int real_irq)
235{
236 return leon_build_device_irq(real_irq, handle_simple_irq, "edge", 0);
237}
238
Konrad Eisele5213a782009-08-17 00:13:29 +0000239void __init leon_init_timers(irq_handler_t counter_fn)
240{
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +0000241 int irq, eirq;
Daniel Hellstrom2791c1a2011-01-04 01:41:32 +0000242 struct device_node *rootnp, *np, *nnp;
Daniel Hellstrom53aea7c2011-01-04 01:41:29 +0000243 struct property *pp;
244 int len;
Daniel Hellstrom01dae0f2011-04-21 04:20:24 +0000245 int icsel;
Daniel Hellstrom2791c1a2011-01-04 01:41:32 +0000246 int ampopts;
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000247 int err;
Konrad Eisele5213a782009-08-17 00:13:29 +0000248
249 leondebug_irq_disable = 0;
250 leon_debug_irqout = 0;
251 master_l10_counter = (unsigned int *)&dummy_master_l10_counter;
252 dummy_master_l10_counter = 0;
253
Daniel Hellstrom53aea7c2011-01-04 01:41:29 +0000254 rootnp = of_find_node_by_path("/ambapp0");
255 if (!rootnp)
256 goto bad;
Daniel Hellstrom7279b822011-01-27 01:26:58 +0000257
258 /* Find System ID: GRLIB build ID and optional CHIP ID */
259 pp = of_find_property(rootnp, "systemid", &len);
260 if (pp)
261 amba_system_id = *(unsigned long *)pp->value;
262
263 /* Find IRQMP IRQ Controller Registers base adr otherwise bail out */
Daniel Hellstrom53aea7c2011-01-04 01:41:29 +0000264 np = of_find_node_by_name(rootnp, "GAISLER_IRQMP");
Daniel Hellstrom9742e722011-01-04 01:41:31 +0000265 if (!np) {
266 np = of_find_node_by_name(rootnp, "01_00d");
267 if (!np)
268 goto bad;
269 }
Daniel Hellstrom53aea7c2011-01-04 01:41:29 +0000270 pp = of_find_property(np, "reg", &len);
271 if (!pp)
272 goto bad;
273 leon3_irqctrl_regs = *(struct leon3_irqctrl_regs_map **)pp->value;
274
275 /* Find GPTIMER Timer Registers base address otherwise bail out. */
Daniel Hellstrom2791c1a2011-01-04 01:41:32 +0000276 nnp = rootnp;
277 do {
278 np = of_find_node_by_name(nnp, "GAISLER_GPTIMER");
279 if (!np) {
280 np = of_find_node_by_name(nnp, "01_011");
281 if (!np)
282 goto bad;
283 }
284
285 ampopts = 0;
286 pp = of_find_property(np, "ampopts", &len);
287 if (pp) {
288 ampopts = *(int *)pp->value;
289 if (ampopts == 0) {
290 /* Skip this instance, resource already
291 * allocated by other OS */
292 nnp = np;
293 continue;
294 }
295 }
296
297 /* Select Timer-Instance on Timer Core. Default is zero */
298 leon3_gptimer_idx = ampopts & 0x7;
299
300 pp = of_find_property(np, "reg", &len);
301 if (pp)
302 leon3_gptimer_regs = *(struct leon3_gptimer_regs_map **)
303 pp->value;
304 pp = of_find_property(np, "interrupts", &len);
305 if (pp)
306 leon3_gptimer_irq = *(unsigned int *)pp->value;
307 } while (0);
Daniel Hellstrom53aea7c2011-01-04 01:41:29 +0000308
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000309 if (!(leon3_gptimer_regs && leon3_irqctrl_regs && leon3_gptimer_irq))
310 goto bad;
311
312 LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].val, 0);
313 LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].rld,
314 (((1000000 / HZ) - 1)));
315 LEON3_BYPASS_STORE_PA(
Daniel Hellstrom2791c1a2011-01-04 01:41:32 +0000316 &leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, 0);
Konrad Eisele5213a782009-08-17 00:13:29 +0000317
Konrad Eisele84017072009-08-31 22:08:13 +0000318#ifdef CONFIG_SMP
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000319 leon3_ticker_irq = leon3_gptimer_irq + 1 + leon3_gptimer_idx;
Konrad Eisele84017072009-08-31 22:08:13 +0000320
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000321 if (!(LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config) &
322 (1<<LEON3_GPTIMER_SEPIRQ))) {
323 printk(KERN_ERR "timer not configured with separate irqs\n");
324 BUG();
Konrad Eisele5213a782009-08-17 00:13:29 +0000325 }
326
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000327 LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].val,
328 0);
329 LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].rld,
330 (((1000000/HZ) - 1)));
331 LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl,
332 0);
333#endif
334
335 /*
336 * The IRQ controller may (if implemented) consist of multiple
337 * IRQ controllers, each mapped on a 4Kb boundary.
338 * Each CPU may be routed to different IRQCTRLs, however
339 * we assume that all CPUs (in SMP system) is routed to the
340 * same IRQ Controller, and for non-SMP only one IRQCTRL is
341 * accessed anyway.
342 * In AMP systems, Linux must run on CPU0 for the time being.
343 */
Daniel Hellstrom01dae0f2011-04-21 04:20:24 +0000344 icsel = LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->icsel[boot_cpu_id/8]);
345 icsel = (icsel >> ((7 - (boot_cpu_id&0x7)) * 4)) & 0xf;
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000346 leon3_irqctrl_regs += icsel;
347
348 /* Probe extended IRQ controller */
349 eirq = (LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->mpstatus)
350 >> 16) & 0xf;
351 if (eirq != 0)
352 leon_eirq_setup(eirq);
353
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +0000354 irq = _leon_build_device_irq(NULL, leon3_gptimer_irq+leon3_gptimer_idx);
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000355 err = request_irq(irq, counter_fn, IRQF_TIMER, "timer", NULL);
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000356 if (err) {
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000357 printk(KERN_ERR "unable to attach timer IRQ%d\n", irq);
Konrad Eisele5213a782009-08-17 00:13:29 +0000358 prom_halt();
359 }
360
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000361 LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl,
362 LEON3_GPTIMER_EN |
363 LEON3_GPTIMER_RL |
364 LEON3_GPTIMER_LD |
365 LEON3_GPTIMER_IRQEN);
Konrad Eisele84017072009-08-31 22:08:13 +0000366
367#ifdef CONFIG_SMP
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000368 /* Install per-cpu IRQ handler for broadcasted ticker */
369 irq = leon_build_device_irq(leon3_ticker_irq, handle_percpu_irq,
370 "per-cpu", 0);
371 err = request_irq(irq, leon_percpu_timer_interrupt,
372 IRQF_PERCPU | IRQF_TIMER, "ticker",
373 NULL);
374 if (err) {
375 printk(KERN_ERR "unable to attach ticker IRQ%d\n", irq);
376 prom_halt();
Konrad Eisele5213a782009-08-17 00:13:29 +0000377 }
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000378
379 LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl,
380 LEON3_GPTIMER_EN |
381 LEON3_GPTIMER_RL |
382 LEON3_GPTIMER_LD |
383 LEON3_GPTIMER_IRQEN);
384#endif
Daniel Hellstrom53aea7c2011-01-04 01:41:29 +0000385 return;
386bad:
387 printk(KERN_ERR "No Timer/irqctrl found\n");
388 BUG();
389 return;
Konrad Eisele5213a782009-08-17 00:13:29 +0000390}
391
392void leon_clear_clock_irq(void)
393{
394}
395
396void leon_load_profile_irq(int cpu, unsigned int limit)
397{
398 BUG();
399}
400
Konrad Eisele5213a782009-08-17 00:13:29 +0000401void __init leon_trans_init(struct device_node *dp)
402{
403 if (strcmp(dp->type, "cpu") == 0 && strcmp(dp->name, "<NULL>") == 0) {
404 struct property *p;
405 p = of_find_property(dp, "mid", (void *)0);
406 if (p) {
407 int mid;
408 dp->name = prom_early_alloc(5 + 1);
409 memcpy(&mid, p->value, p->length);
410 sprintf((char *)dp->name, "cpu%.2d", mid);
411 }
412 }
413}
414
415void __initdata (*prom_amba_init)(struct device_node *dp, struct device_node ***nextp) = 0;
416
417void __init leon_node_init(struct device_node *dp, struct device_node ***nextp)
418{
419 if (prom_amba_init &&
420 strcmp(dp->type, "ambapp") == 0 &&
421 strcmp(dp->name, "ambapp0") == 0) {
422 prom_amba_init(dp, nextp);
423 }
424}
425
Konrad Eisele84017072009-08-31 22:08:13 +0000426#ifdef CONFIG_SMP
427
428void leon_set_cpu_int(int cpu, int level)
429{
430 unsigned long mask;
431 mask = get_irqmask(level);
432 LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask);
433}
434
435static void leon_clear_ipi(int cpu, int level)
436{
437 unsigned long mask;
438 mask = get_irqmask(level);
439 LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask<<16);
440}
441
442static void leon_set_udt(int cpu)
443{
444}
445
446void leon_clear_profile_irq(int cpu)
447{
448}
449
450void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu)
451{
452 unsigned long mask, flags, *addr;
453 mask = get_irqmask(irq_nr);
Daniel Hellstromd61a38b2011-04-19 23:41:21 +0000454 spin_lock_irqsave(&leon_irq_lock, flags);
Daniel Hellstroma481b5d2011-04-19 23:41:25 +0000455 addr = (unsigned long *)LEON_IMASK(cpu);
456 LEON3_BYPASS_STORE_PA(addr, (LEON3_BYPASS_LOAD_PA(addr) | mask));
Daniel Hellstromd61a38b2011-04-19 23:41:21 +0000457 spin_unlock_irqrestore(&leon_irq_lock, flags);
Konrad Eisele84017072009-08-31 22:08:13 +0000458}
459
460#endif
461
Konrad Eisele5213a782009-08-17 00:13:29 +0000462void __init leon_init_IRQ(void)
463{
Sam Ravnborg6baa9b22011-04-18 11:25:44 +0000464 sparc_irq_config.init_timers = leon_init_timers;
Daniel Hellstrom4c6773c2011-04-19 23:41:22 +0000465 sparc_irq_config.build_device_irq = _leon_build_device_irq;
Konrad Eisele5213a782009-08-17 00:13:29 +0000466
467 BTFIXUPSET_CALL(clear_clock_irq, leon_clear_clock_irq,
468 BTFIXUPCALL_NORM);
469 BTFIXUPSET_CALL(load_profile_irq, leon_load_profile_irq,
470 BTFIXUPCALL_NOP);
471
472#ifdef CONFIG_SMP
473 BTFIXUPSET_CALL(set_cpu_int, leon_set_cpu_int, BTFIXUPCALL_NORM);
474 BTFIXUPSET_CALL(clear_cpu_int, leon_clear_ipi, BTFIXUPCALL_NORM);
475 BTFIXUPSET_CALL(set_irq_udt, leon_set_udt, BTFIXUPCALL_NORM);
476#endif
477
478}
479
480void __init leon_init(void)
481{
Andres Salomoned418502010-10-10 21:51:25 -0600482 of_pdt_build_more = &leon_node_init;
Konrad Eisele5213a782009-08-17 00:13:29 +0000483}