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16#include <linux/init.h>
17#include <linux/module.h>
18#include <linux/sched.h>
19#include <linux/interrupt.h>
20#include <linux/ptrace.h>
21#include <linux/timer.h>
22#include <linux/irq.h>
23#include <linux/io.h>
24
25#include <asm/cacheflush.h>
26
27#include <mach/hardware.h>
28
29#include <mach/msm_iomap.h>
30
31#include "smd_private.h"
32
33enum {
34 IRQ_DEBUG_SLEEP_INT_TRIGGER = 1U << 0,
35 IRQ_DEBUG_SLEEP_INT = 1U << 1,
36 IRQ_DEBUG_SLEEP_ABORT = 1U << 2,
37 IRQ_DEBUG_SLEEP = 1U << 3,
38 IRQ_DEBUG_SLEEP_REQUEST = 1U << 4,
39};
40static int msm_irq_debug_mask;
41module_param_named(debug_mask, msm_irq_debug_mask, int,
42 S_IRUGO | S_IWUSR | S_IWGRP);
43
44#define VIC_REG(off) (MSM_VIC_BASE + (off))
45#define VIC_INT_TO_REG_ADDR(base, irq) (base + (irq / 32) * 4)
46#define VIC_INT_TO_REG_INDEX(irq) ((irq >> 5) & 3)
47
48#define VIC_INT_SELECT0 VIC_REG(0x0000)
49#define VIC_INT_SELECT1 VIC_REG(0x0004)
50#define VIC_INT_SELECT2 VIC_REG(0x0008)
51#define VIC_INT_SELECT3 VIC_REG(0x000C)
52#define VIC_INT_EN0 VIC_REG(0x0010)
53#define VIC_INT_EN1 VIC_REG(0x0014)
54#define VIC_INT_EN2 VIC_REG(0x0018)
55#define VIC_INT_EN3 VIC_REG(0x001C)
56#define VIC_INT_ENCLEAR0 VIC_REG(0x0020)
57#define VIC_INT_ENCLEAR1 VIC_REG(0x0024)
58#define VIC_INT_ENCLEAR2 VIC_REG(0x0028)
59#define VIC_INT_ENCLEAR3 VIC_REG(0x002C)
60#define VIC_INT_ENSET0 VIC_REG(0x0030)
61#define VIC_INT_ENSET1 VIC_REG(0x0034)
62#define VIC_INT_ENSET2 VIC_REG(0x0038)
63#define VIC_INT_ENSET3 VIC_REG(0x003C)
64#define VIC_INT_TYPE0 VIC_REG(0x0040)
65#define VIC_INT_TYPE1 VIC_REG(0x0044)
66#define VIC_INT_TYPE2 VIC_REG(0x0048)
67#define VIC_INT_TYPE3 VIC_REG(0x004C)
68#define VIC_INT_POLARITY0 VIC_REG(0x0050)
69#define VIC_INT_POLARITY1 VIC_REG(0x0054)
70#define VIC_INT_POLARITY2 VIC_REG(0x0058)
71#define VIC_INT_POLARITY3 VIC_REG(0x005C)
72#define VIC_NO_PEND_VAL VIC_REG(0x0060)
73
74#if defined(CONFIG_ARCH_MSM_SCORPION)
75#define VIC_NO_PEND_VAL_FIQ VIC_REG(0x0064)
76#define VIC_INT_MASTEREN VIC_REG(0x0068)
77#define VIC_CONFIG VIC_REG(0x006C)
78#else
79#define VIC_INT_MASTEREN VIC_REG(0x0064)
80#define VIC_PROTECTION VIC_REG(0x006C)
81#define VIC_CONFIG VIC_REG(0x0068)
82#endif
83
84#define VIC_IRQ_STATUS0 VIC_REG(0x0080)
85#define VIC_IRQ_STATUS1 VIC_REG(0x0084)
86#define VIC_IRQ_STATUS2 VIC_REG(0x0088)
87#define VIC_IRQ_STATUS3 VIC_REG(0x008C)
88#define VIC_FIQ_STATUS0 VIC_REG(0x0090)
89#define VIC_FIQ_STATUS1 VIC_REG(0x0094)
90#define VIC_FIQ_STATUS2 VIC_REG(0x0098)
91#define VIC_FIQ_STATUS3 VIC_REG(0x009C)
92#define VIC_RAW_STATUS0 VIC_REG(0x00A0)
93#define VIC_RAW_STATUS1 VIC_REG(0x00A4)
94#define VIC_RAW_STATUS2 VIC_REG(0x00A8)
95#define VIC_RAW_STATUS3 VIC_REG(0x00AC)
96#define VIC_INT_CLEAR0 VIC_REG(0x00B0)
97#define VIC_INT_CLEAR1 VIC_REG(0x00B4)
98#define VIC_INT_CLEAR2 VIC_REG(0x00B8)
99#define VIC_INT_CLEAR3 VIC_REG(0x00BC)
100#define VIC_SOFTINT0 VIC_REG(0x00C0)
101#define VIC_SOFTINT1 VIC_REG(0x00C4)
102#define VIC_SOFTINT2 VIC_REG(0x00C8)
103#define VIC_SOFTINT3 VIC_REG(0x00CC)
104#define VIC_IRQ_VEC_RD VIC_REG(0x00D0)
105#define VIC_IRQ_VEC_PEND_RD VIC_REG(0x00D4)
106#define VIC_IRQ_VEC_WR VIC_REG(0x00D8)
107
108#if defined(CONFIG_ARCH_MSM_SCORPION)
109#define VIC_FIQ_VEC_RD VIC_REG(0x00DC)
110#define VIC_FIQ_VEC_PEND_RD VIC_REG(0x00E0)
111#define VIC_FIQ_VEC_WR VIC_REG(0x00E4)
112#define VIC_IRQ_IN_SERVICE VIC_REG(0x00E8)
113#define VIC_IRQ_IN_STACK VIC_REG(0x00EC)
114#define VIC_FIQ_IN_SERVICE VIC_REG(0x00F0)
115#define VIC_FIQ_IN_STACK VIC_REG(0x00F4)
116#define VIC_TEST_BUS_SEL VIC_REG(0x00F8)
117#define VIC_IRQ_CTRL_CONFIG VIC_REG(0x00FC)
118#else
119#define VIC_IRQ_IN_SERVICE VIC_REG(0x00E0)
120#define VIC_IRQ_IN_STACK VIC_REG(0x00E4)
121#define VIC_TEST_BUS_SEL VIC_REG(0x00E8)
122#endif
123
124#define VIC_VECTPRIORITY(n) VIC_REG(0x0200+((n) * 4))
125#define VIC_VECTADDR(n) VIC_REG(0x0400+((n) * 4))
126
127#if defined(CONFIG_ARCH_MSM7X30)
128#define VIC_NUM_REGS 4
129#else
130#define VIC_NUM_REGS 2
131#endif
132
133#if VIC_NUM_REGS == 2
134#define DPRINT_REGS(base_reg, format, ...) \
135 printk(KERN_INFO format " %x %x\n", ##__VA_ARGS__, \
136 readl(base_reg ## 0), readl(base_reg ## 1))
137#define DPRINT_ARRAY(array, format, ...) \
138 printk(KERN_INFO format " %x %x\n", ##__VA_ARGS__, \
139 array[0], array[1])
140#elif VIC_NUM_REGS == 4
141#define DPRINT_REGS(base_reg, format, ...) \
142 printk(KERN_INFO format " %x %x %x %x\n", ##__VA_ARGS__, \
143 readl(base_reg ## 0), readl(base_reg ## 1), \
144 readl(base_reg ## 2), readl(base_reg ## 3))
145#define DPRINT_ARRAY(array, format, ...) \
146 printk(KERN_INFO format " %x %x %x %x\n", ##__VA_ARGS__, \
147 array[0], array[1], \
148 array[2], array[3])
149#else
150#error "VIC_NUM_REGS set to illegal value"
151#endif
152
153static uint32_t msm_irq_smsm_wake_enable[2];
154static struct {
155 uint32_t int_en[2];
156 uint32_t int_type;
157 uint32_t int_polarity;
158 uint32_t int_select;
159} msm_irq_shadow_reg[VIC_NUM_REGS];
160static uint32_t msm_irq_idle_disable[VIC_NUM_REGS];
161
162#define SMSM_FAKE_IRQ (0xff)
163static uint8_t msm_irq_to_smsm[NR_IRQS] = {
164 [INT_MDDI_EXT] = 1,
165 [INT_MDDI_PRI] = 2,
166 [INT_MDDI_CLIENT] = 3,
167 [INT_USB_OTG] = 4,
168
169 [INT_PWB_I2C] = 5,
170 [INT_SDC1_0] = 6,
171 [INT_SDC1_1] = 7,
172 [INT_SDC2_0] = 8,
173
174 [INT_SDC2_1] = 9,
175 [INT_ADSP_A9_A11] = 10,
176 [INT_UART1] = 11,
177 [INT_UART2] = 12,
178
179 [INT_UART3] = 13,
180 [INT_UART1_RX] = 14,
181 [INT_UART2_RX] = 15,
182 [INT_UART3_RX] = 16,
183
184 [INT_UART1DM_IRQ] = 17,
185 [INT_UART1DM_RX] = 18,
186 [INT_KEYSENSE] = 19,
187#if !defined(CONFIG_ARCH_MSM7X30)
188 [INT_AD_HSSD] = 20,
189#endif
190
191 [INT_NAND_WR_ER_DONE] = 21,
192 [INT_NAND_OP_DONE] = 22,
193 [INT_TCHSCRN1] = 23,
194 [INT_TCHSCRN2] = 24,
195
196 [INT_TCHSCRN_SSBI] = 25,
197 [INT_USB_HS] = 26,
198 [INT_UART2DM_RX] = 27,
199 [INT_UART2DM_IRQ] = 28,
200
201 [INT_SDC4_1] = 29,
202 [INT_SDC4_0] = 30,
203 [INT_SDC3_1] = 31,
204 [INT_SDC3_0] = 32,
205
206
207 [INT_GPIO_GROUP1] = SMSM_FAKE_IRQ,
208 [INT_GPIO_GROUP2] = SMSM_FAKE_IRQ,
209 [INT_A9_M2A_0] = SMSM_FAKE_IRQ,
210 [INT_A9_M2A_1] = SMSM_FAKE_IRQ,
211 [INT_A9_M2A_5] = SMSM_FAKE_IRQ,
212 [INT_GP_TIMER_EXP] = SMSM_FAKE_IRQ,
213 [INT_DEBUG_TIMER_EXP] = SMSM_FAKE_IRQ,
214 [INT_ADSP_A11] = SMSM_FAKE_IRQ,
215#ifdef CONFIG_ARCH_QSD8X50
216 [INT_SIRC_0] = SMSM_FAKE_IRQ,
217 [INT_SIRC_1] = SMSM_FAKE_IRQ,
218#endif
219};
220
221static inline void msm_irq_write_all_regs(void __iomem *base, unsigned int val)
222{
223 int i;
224
225 for (i = 0; i < VIC_NUM_REGS; i++)
226 writel(val, base + (i * 4));
227}
228
229static void msm_irq_ack(struct irq_data *d)
230{
231 void __iomem *reg = VIC_INT_TO_REG_ADDR(VIC_INT_CLEAR0, d->irq);
232 writel(1 << (d->irq & 31), reg);
233}
234
235static void msm_irq_mask(struct irq_data *d)
236{
237 void __iomem *reg = VIC_INT_TO_REG_ADDR(VIC_INT_ENCLEAR0, d->irq);
238 unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
239 uint32_t mask = 1UL << (d->irq & 31);
240 int smsm_irq = msm_irq_to_smsm[d->irq];
241
242 msm_irq_shadow_reg[index].int_en[0] &= ~mask;
243 writel(mask, reg);
244 if (smsm_irq == 0)
245 msm_irq_idle_disable[index] &= ~mask;
246 else {
247 mask = 1UL << (smsm_irq - 1);
248 msm_irq_smsm_wake_enable[0] &= ~mask;
249 }
250}
251
252static void msm_irq_unmask(struct irq_data *d)
253{
254 void __iomem *reg = VIC_INT_TO_REG_ADDR(VIC_INT_ENSET0, d->irq);
255 unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
256 uint32_t mask = 1UL << (d->irq & 31);
257 int smsm_irq = msm_irq_to_smsm[d->irq];
258
259 msm_irq_shadow_reg[index].int_en[0] |= mask;
260 writel(mask, reg);
261
262 if (smsm_irq == 0)
263 msm_irq_idle_disable[index] |= mask;
264 else {
265 mask = 1UL << (smsm_irq - 1);
266 msm_irq_smsm_wake_enable[0] |= mask;
267 }
268}
269
270static int msm_irq_set_wake(struct irq_data *d, unsigned int on)
271{
272 unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
273 uint32_t mask = 1UL << (d->irq & 31);
274 int smsm_irq = msm_irq_to_smsm[d->irq];
275
276 if (smsm_irq == 0) {
277 printk(KERN_ERR "msm_irq_set_wake: bad wakeup irq %d\n", d->irq);
278 return -EINVAL;
279 }
280 if (on)
281 msm_irq_shadow_reg[index].int_en[1] |= mask;
282 else
283 msm_irq_shadow_reg[index].int_en[1] &= ~mask;
284
285 if (smsm_irq == SMSM_FAKE_IRQ)
286 return 0;
287
288 mask = 1UL << (smsm_irq - 1);
289 if (on)
290 msm_irq_smsm_wake_enable[1] |= mask;
291 else
292 msm_irq_smsm_wake_enable[1] &= ~mask;
293 return 0;
294}
295
296static int msm_irq_set_type(struct irq_data *d, unsigned int flow_type)
297{
298 void __iomem *treg = VIC_INT_TO_REG_ADDR(VIC_INT_TYPE0, d->irq);
299 void __iomem *preg = VIC_INT_TO_REG_ADDR(VIC_INT_POLARITY0, d->irq);
300 unsigned index = VIC_INT_TO_REG_INDEX(d->irq);
301 int b = 1 << (d->irq & 31);
302 uint32_t polarity;
303 uint32_t type;
304
305 polarity = msm_irq_shadow_reg[index].int_polarity;
306 if (flow_type & (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_LOW))
307 polarity |= b;
308 if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_HIGH))
309 polarity &= ~b;
310 writel(polarity, preg);
311 msm_irq_shadow_reg[index].int_polarity = polarity;
312
313 type = msm_irq_shadow_reg[index].int_type;
314 if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
315 type |= b;
316 __irq_set_handler_locked(d->irq, handle_edge_irq);
317 }
318 if (flow_type & (IRQF_TRIGGER_HIGH | IRQF_TRIGGER_LOW)) {
319 type &= ~b;
320 __irq_set_handler_locked(d->irq, handle_level_irq);
321 }
322 writel(type, treg);
323 msm_irq_shadow_reg[index].int_type = type;
324 return 0;
325}
326
327static struct irq_chip msm_irq_chip = {
328 .name = "msm",
329 .irq_disable = msm_irq_mask,
330 .irq_ack = msm_irq_ack,
331 .irq_mask = msm_irq_mask,
332 .irq_unmask = msm_irq_unmask,
333 .irq_set_wake = msm_irq_set_wake,
334 .irq_set_type = msm_irq_set_type,
335};
336
337void __init msm_init_irq(void)
338{
339 unsigned n;
340
341
342 msm_irq_write_all_regs(VIC_INT_TYPE0, 0);
343
344
345 msm_irq_write_all_regs(VIC_INT_POLARITY0, 0);
346
347
348 msm_irq_write_all_regs(VIC_INT_SELECT0, 0);
349
350
351 msm_irq_write_all_regs(VIC_INT_EN0, 0);
352
353
354 writel(0, VIC_CONFIG);
355
356
357 writel(3, VIC_INT_MASTEREN);
358
359 for (n = 0; n < NR_MSM_IRQS; n++) {
360 irq_set_chip_and_handler(n, &msm_irq_chip, handle_level_irq);
361 set_irq_flags(n, IRQF_VALID);
362 }
363}
364
