5 #include <linux/config.h>
6 #include <asm/machdep.h> /* ppc_md */
7 #include <asm/atomic.h>
10 * These constants are used for passing information about interrupt
11 * signal polarity and level/edge sensing to the low-level PIC chip
14 #define IRQ_SENSE_MASK 0x1
15 #define IRQ_SENSE_LEVEL 0x1 /* interrupt on active level */
16 #define IRQ_SENSE_EDGE 0x0 /* interrupt triggered by edge */
18 #define IRQ_POLARITY_MASK 0x2
19 #define IRQ_POLARITY_POSITIVE 0x2 /* high level or low->high edge */
20 #define IRQ_POLARITY_NEGATIVE 0x0 /* low level or high->low edge */
22 #if defined(CONFIG_40x)
23 #include <asm/ibm4xx.h>
26 #define NR_BOARD_IRQS 0
29 #ifndef UIC_WIDTH /* Number of interrupts per device */
33 #ifndef NR_UICS /* number of UIC devices */
37 #if defined (CONFIG_403)
39 * The PowerPC 403 cores' Asynchronous Interrupt Controller (AIC) has
40 * 32 possible interrupts, a majority of which are not implemented on
41 * all cores. There are six configurable, external interrupt pins and
42 * there are eight internal interrupts for the on-chip serial port
43 * (SPU), DMA controller, and JTAG controller.
47 #define NR_AIC_IRQS 32
48 #define NR_IRQS (NR_AIC_IRQS + NR_BOARD_IRQS)
50 #elif !defined (CONFIG_403)
53 * The PowerPC 405 cores' Universal Interrupt Controller (UIC) has 32
54 * possible interrupts as well. There are seven, configurable external
55 * interrupt pins and there are 17 internal interrupts for the on-chip
56 * serial port, DMA controller, on-chip Ethernet controller, PCI, etc.
61 #define NR_UIC_IRQS UIC_WIDTH
62 #define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)
65 irq_canonicalize(int irq)
70 #elif defined(CONFIG_44x)
71 #include <asm/ibm44x.h>
73 #define NR_UIC_IRQS 32
74 #define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)
77 irq_canonicalize(int irq)
82 #elif defined(CONFIG_8xx)
84 /* Now include the board configuration specific associations.
86 #include <asm/mpc8xx.h>
88 /* The MPC8xx cores have 16 possible interrupts. There are eight
89 * possible level sensitive interrupts assigned and generated internally
90 * from such devices as CPM, PCMCIA, RTC, PIT, TimeBase and Decrementer.
91 * There are eight external interrupts (IRQs) that can be configured
92 * as either level or edge sensitive.
94 * On some implementations, there is also the possibility of an 8259
95 * through the PCI and PCI-ISA bridges.
97 * We are "flattening" the interrupt vectors of the cascaded CPM
98 * and 8259 interrupt controllers so that we can uniquely identify
99 * any interrupt source with a single integer.
101 #define NR_SIU_INTS 16
102 #define NR_CPM_INTS 32
104 #define NR_8259_INTS 0
107 #define SIU_IRQ_OFFSET 0
108 #define CPM_IRQ_OFFSET (SIU_IRQ_OFFSET + NR_SIU_INTS)
109 #define I8259_IRQ_OFFSET (CPM_IRQ_OFFSET + NR_CPM_INTS)
111 #define NR_IRQS (NR_SIU_INTS + NR_CPM_INTS + NR_8259_INTS)
113 /* These values must be zero-based and map 1:1 with the SIU configuration.
114 * They are used throughout the 8xx I/O subsystem to generate
115 * interrupt masks, flags, and other control patterns. This is why the
116 * current kernel assumption of the 8259 as the base controller is such
117 * a pain in the butt.
119 #define SIU_IRQ0 (0) /* Highest priority */
120 #define SIU_LEVEL0 (1)
122 #define SIU_LEVEL1 (3)
124 #define SIU_LEVEL2 (5)
126 #define SIU_LEVEL3 (7)
128 #define SIU_LEVEL4 (9)
129 #define SIU_IRQ5 (10)
130 #define SIU_LEVEL5 (11)
131 #define SIU_IRQ6 (12)
132 #define SIU_LEVEL6 (13)
133 #define SIU_IRQ7 (14)
134 #define SIU_LEVEL7 (15)
136 /* The internal interrupts we can configure as we see fit.
137 * My personal preference is CPM at level 2, which puts it above the
138 * MBX PCI/ISA/IDE interrupts.
140 #ifndef PIT_INTERRUPT
141 #define PIT_INTERRUPT SIU_LEVEL0
143 #ifndef CPM_INTERRUPT
144 #define CPM_INTERRUPT SIU_LEVEL2
146 #ifndef PCMCIA_INTERRUPT
147 #define PCMCIA_INTERRUPT SIU_LEVEL6
149 #ifndef DEC_INTERRUPT
150 #define DEC_INTERRUPT SIU_LEVEL7
153 /* Some internal interrupt registers use an 8-bit mask for the interrupt
154 * level instead of a number.
156 #define mk_int_int_mask(IL) (1 << (7 - (IL/2)))
158 /* always the same on 8xx -- Cort */
159 static __inline__ int irq_canonicalize(int irq)
164 #elif defined(CONFIG_83xx)
165 #include <asm/mpc83xx.h>
167 static __inline__ int irq_canonicalize(int irq)
172 #define NR_IRQS (NR_IPIC_INTS)
174 #elif defined(CONFIG_85xx)
175 /* Now include the board configuration specific associations.
177 #include <asm/mpc85xx.h>
179 /* The MPC8548 openpic has 48 internal interrupts and 12 external
182 * We are "flattening" the interrupt vectors of the cascaded CPM
183 * so that we can uniquely identify any interrupt source with a
186 #define NR_CPM_INTS 64
187 #define NR_EPIC_INTS 60
189 #define NR_8259_INTS 0
191 #define NUM_8259_INTERRUPTS NR_8259_INTS
193 #ifndef CPM_IRQ_OFFSET
194 #define CPM_IRQ_OFFSET 0
197 #define NR_IRQS (NR_EPIC_INTS + NR_CPM_INTS + NR_8259_INTS)
199 /* Internal IRQs on MPC85xx OpenPIC */
201 #ifndef MPC85xx_OPENPIC_IRQ_OFFSET
203 #define MPC85xx_OPENPIC_IRQ_OFFSET (CPM_IRQ_OFFSET + NR_CPM_INTS)
205 #define MPC85xx_OPENPIC_IRQ_OFFSET 0
209 /* Not all of these exist on all MPC85xx implementations */
210 #define MPC85xx_IRQ_L2CACHE ( 0 + MPC85xx_OPENPIC_IRQ_OFFSET)
211 #define MPC85xx_IRQ_ECM ( 1 + MPC85xx_OPENPIC_IRQ_OFFSET)
212 #define MPC85xx_IRQ_DDR ( 2 + MPC85xx_OPENPIC_IRQ_OFFSET)
213 #define MPC85xx_IRQ_LBIU ( 3 + MPC85xx_OPENPIC_IRQ_OFFSET)
214 #define MPC85xx_IRQ_DMA0 ( 4 + MPC85xx_OPENPIC_IRQ_OFFSET)
215 #define MPC85xx_IRQ_DMA1 ( 5 + MPC85xx_OPENPIC_IRQ_OFFSET)
216 #define MPC85xx_IRQ_DMA2 ( 6 + MPC85xx_OPENPIC_IRQ_OFFSET)
217 #define MPC85xx_IRQ_DMA3 ( 7 + MPC85xx_OPENPIC_IRQ_OFFSET)
218 #define MPC85xx_IRQ_PCI1 ( 8 + MPC85xx_OPENPIC_IRQ_OFFSET)
219 #define MPC85xx_IRQ_PCI2 ( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
220 #define MPC85xx_IRQ_RIO_ERROR ( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
221 #define MPC85xx_IRQ_RIO_BELL (10 + MPC85xx_OPENPIC_IRQ_OFFSET)
222 #define MPC85xx_IRQ_RIO_TX (11 + MPC85xx_OPENPIC_IRQ_OFFSET)
223 #define MPC85xx_IRQ_RIO_RX (12 + MPC85xx_OPENPIC_IRQ_OFFSET)
224 #define MPC85xx_IRQ_TSEC1_TX (13 + MPC85xx_OPENPIC_IRQ_OFFSET)
225 #define MPC85xx_IRQ_TSEC1_RX (14 + MPC85xx_OPENPIC_IRQ_OFFSET)
226 #define MPC85xx_IRQ_TSEC3_TX (15 + MPC85xx_OPENPIC_IRQ_OFFSET)
227 #define MPC85xx_IRQ_TSEC3_RX (16 + MPC85xx_OPENPIC_IRQ_OFFSET)
228 #define MPC85xx_IRQ_TSEC3_ERROR (17 + MPC85xx_OPENPIC_IRQ_OFFSET)
229 #define MPC85xx_IRQ_TSEC1_ERROR (18 + MPC85xx_OPENPIC_IRQ_OFFSET)
230 #define MPC85xx_IRQ_TSEC2_TX (19 + MPC85xx_OPENPIC_IRQ_OFFSET)
231 #define MPC85xx_IRQ_TSEC2_RX (20 + MPC85xx_OPENPIC_IRQ_OFFSET)
232 #define MPC85xx_IRQ_TSEC4_TX (21 + MPC85xx_OPENPIC_IRQ_OFFSET)
233 #define MPC85xx_IRQ_TSEC4_RX (22 + MPC85xx_OPENPIC_IRQ_OFFSET)
234 #define MPC85xx_IRQ_TSEC4_ERROR (23 + MPC85xx_OPENPIC_IRQ_OFFSET)
235 #define MPC85xx_IRQ_TSEC2_ERROR (24 + MPC85xx_OPENPIC_IRQ_OFFSET)
236 #define MPC85xx_IRQ_FEC (25 + MPC85xx_OPENPIC_IRQ_OFFSET)
237 #define MPC85xx_IRQ_DUART (26 + MPC85xx_OPENPIC_IRQ_OFFSET)
238 #define MPC85xx_IRQ_IIC1 (27 + MPC85xx_OPENPIC_IRQ_OFFSET)
239 #define MPC85xx_IRQ_PERFMON (28 + MPC85xx_OPENPIC_IRQ_OFFSET)
240 #define MPC85xx_IRQ_SEC2 (29 + MPC85xx_OPENPIC_IRQ_OFFSET)
241 #define MPC85xx_IRQ_CPM (30 + MPC85xx_OPENPIC_IRQ_OFFSET)
243 /* The 12 external interrupt lines */
244 #define MPC85xx_IRQ_EXT0 (48 + MPC85xx_OPENPIC_IRQ_OFFSET)
245 #define MPC85xx_IRQ_EXT1 (49 + MPC85xx_OPENPIC_IRQ_OFFSET)
246 #define MPC85xx_IRQ_EXT2 (50 + MPC85xx_OPENPIC_IRQ_OFFSET)
247 #define MPC85xx_IRQ_EXT3 (51 + MPC85xx_OPENPIC_IRQ_OFFSET)
248 #define MPC85xx_IRQ_EXT4 (52 + MPC85xx_OPENPIC_IRQ_OFFSET)
249 #define MPC85xx_IRQ_EXT5 (53 + MPC85xx_OPENPIC_IRQ_OFFSET)
250 #define MPC85xx_IRQ_EXT6 (54 + MPC85xx_OPENPIC_IRQ_OFFSET)
251 #define MPC85xx_IRQ_EXT7 (55 + MPC85xx_OPENPIC_IRQ_OFFSET)
252 #define MPC85xx_IRQ_EXT8 (56 + MPC85xx_OPENPIC_IRQ_OFFSET)
253 #define MPC85xx_IRQ_EXT9 (57 + MPC85xx_OPENPIC_IRQ_OFFSET)
254 #define MPC85xx_IRQ_EXT10 (58 + MPC85xx_OPENPIC_IRQ_OFFSET)
255 #define MPC85xx_IRQ_EXT11 (59 + MPC85xx_OPENPIC_IRQ_OFFSET)
257 /* CPM related interrupts */
258 #define SIU_INT_ERROR ((uint)0x00+CPM_IRQ_OFFSET)
259 #define SIU_INT_I2C ((uint)0x01+CPM_IRQ_OFFSET)
260 #define SIU_INT_SPI ((uint)0x02+CPM_IRQ_OFFSET)
261 #define SIU_INT_RISC ((uint)0x03+CPM_IRQ_OFFSET)
262 #define SIU_INT_SMC1 ((uint)0x04+CPM_IRQ_OFFSET)
263 #define SIU_INT_SMC2 ((uint)0x05+CPM_IRQ_OFFSET)
264 #define SIU_INT_USB ((uint)0x0b+CPM_IRQ_OFFSET)
265 #define SIU_INT_TIMER1 ((uint)0x0c+CPM_IRQ_OFFSET)
266 #define SIU_INT_TIMER2 ((uint)0x0d+CPM_IRQ_OFFSET)
267 #define SIU_INT_TIMER3 ((uint)0x0e+CPM_IRQ_OFFSET)
268 #define SIU_INT_TIMER4 ((uint)0x0f+CPM_IRQ_OFFSET)
269 #define SIU_INT_FCC1 ((uint)0x20+CPM_IRQ_OFFSET)
270 #define SIU_INT_FCC2 ((uint)0x21+CPM_IRQ_OFFSET)
271 #define SIU_INT_FCC3 ((uint)0x22+CPM_IRQ_OFFSET)
272 #define SIU_INT_MCC1 ((uint)0x24+CPM_IRQ_OFFSET)
273 #define SIU_INT_MCC2 ((uint)0x25+CPM_IRQ_OFFSET)
274 #define SIU_INT_SCC1 ((uint)0x28+CPM_IRQ_OFFSET)
275 #define SIU_INT_SCC2 ((uint)0x29+CPM_IRQ_OFFSET)
276 #define SIU_INT_SCC3 ((uint)0x2a+CPM_IRQ_OFFSET)
277 #define SIU_INT_SCC4 ((uint)0x2b+CPM_IRQ_OFFSET)
278 #define SIU_INT_PC15 ((uint)0x30+CPM_IRQ_OFFSET)
279 #define SIU_INT_PC14 ((uint)0x31+CPM_IRQ_OFFSET)
280 #define SIU_INT_PC13 ((uint)0x32+CPM_IRQ_OFFSET)
281 #define SIU_INT_PC12 ((uint)0x33+CPM_IRQ_OFFSET)
282 #define SIU_INT_PC11 ((uint)0x34+CPM_IRQ_OFFSET)
283 #define SIU_INT_PC10 ((uint)0x35+CPM_IRQ_OFFSET)
284 #define SIU_INT_PC9 ((uint)0x36+CPM_IRQ_OFFSET)
285 #define SIU_INT_PC8 ((uint)0x37+CPM_IRQ_OFFSET)
286 #define SIU_INT_PC7 ((uint)0x38+CPM_IRQ_OFFSET)
287 #define SIU_INT_PC6 ((uint)0x39+CPM_IRQ_OFFSET)
288 #define SIU_INT_PC5 ((uint)0x3a+CPM_IRQ_OFFSET)
289 #define SIU_INT_PC4 ((uint)0x3b+CPM_IRQ_OFFSET)
290 #define SIU_INT_PC3 ((uint)0x3c+CPM_IRQ_OFFSET)
291 #define SIU_INT_PC2 ((uint)0x3d+CPM_IRQ_OFFSET)
292 #define SIU_INT_PC1 ((uint)0x3e+CPM_IRQ_OFFSET)
293 #define SIU_INT_PC0 ((uint)0x3f+CPM_IRQ_OFFSET)
295 static __inline__ int irq_canonicalize(int irq)
300 #else /* CONFIG_40x + CONFIG_8xx */
302 * this is the # irq's for all ppc arch's (pmac/chrp/prep)
303 * so it is the max of them all
309 #define NUM_8259_INTERRUPTS 16
311 #else /* CONFIG_8260 */
313 /* The 8260 has an internal interrupt controller with a maximum of
314 * 64 IRQs. We will use NR_IRQs from above since it is large enough.
315 * Don't be confused by the 8260 documentation where they list an
316 * "interrupt number" and "interrupt vector". We are only interested
317 * in the interrupt vector. There are "reserved" holes where the
318 * vector number increases, but the interrupt number in the table does not.
319 * (Document errata updates have fixed this...make sure you have up to
320 * date processor documentation -- Dan).
323 #ifndef CPM_IRQ_OFFSET
324 #define CPM_IRQ_OFFSET 0
327 #define NR_CPM_INTS 64
329 #define SIU_INT_ERROR ((uint)0x00 + CPM_IRQ_OFFSET)
330 #define SIU_INT_I2C ((uint)0x01 + CPM_IRQ_OFFSET)
331 #define SIU_INT_SPI ((uint)0x02 + CPM_IRQ_OFFSET)
332 #define SIU_INT_RISC ((uint)0x03 + CPM_IRQ_OFFSET)
333 #define SIU_INT_SMC1 ((uint)0x04 + CPM_IRQ_OFFSET)
334 #define SIU_INT_SMC2 ((uint)0x05 + CPM_IRQ_OFFSET)
335 #define SIU_INT_IDMA1 ((uint)0x06 + CPM_IRQ_OFFSET)
336 #define SIU_INT_IDMA2 ((uint)0x07 + CPM_IRQ_OFFSET)
337 #define SIU_INT_IDMA3 ((uint)0x08 + CPM_IRQ_OFFSET)
338 #define SIU_INT_IDMA4 ((uint)0x09 + CPM_IRQ_OFFSET)
339 #define SIU_INT_SDMA ((uint)0x0a + CPM_IRQ_OFFSET)
340 #define SIU_INT_TIMER1 ((uint)0x0c + CPM_IRQ_OFFSET)
341 #define SIU_INT_TIMER2 ((uint)0x0d + CPM_IRQ_OFFSET)
342 #define SIU_INT_TIMER3 ((uint)0x0e + CPM_IRQ_OFFSET)
343 #define SIU_INT_TIMER4 ((uint)0x0f + CPM_IRQ_OFFSET)
344 #define SIU_INT_TMCNT ((uint)0x10 + CPM_IRQ_OFFSET)
345 #define SIU_INT_PIT ((uint)0x11 + CPM_IRQ_OFFSET)
346 #define SIU_INT_IRQ1 ((uint)0x13 + CPM_IRQ_OFFSET)
347 #define SIU_INT_IRQ2 ((uint)0x14 + CPM_IRQ_OFFSET)
348 #define SIU_INT_IRQ3 ((uint)0x15 + CPM_IRQ_OFFSET)
349 #define SIU_INT_IRQ4 ((uint)0x16 + CPM_IRQ_OFFSET)
350 #define SIU_INT_IRQ5 ((uint)0x17 + CPM_IRQ_OFFSET)
351 #define SIU_INT_IRQ6 ((uint)0x18 + CPM_IRQ_OFFSET)
352 #define SIU_INT_IRQ7 ((uint)0x19 + CPM_IRQ_OFFSET)
353 #define SIU_INT_FCC1 ((uint)0x20 + CPM_IRQ_OFFSET)
354 #define SIU_INT_FCC2 ((uint)0x21 + CPM_IRQ_OFFSET)
355 #define SIU_INT_FCC3 ((uint)0x22 + CPM_IRQ_OFFSET)
356 #define SIU_INT_MCC1 ((uint)0x24 + CPM_IRQ_OFFSET)
357 #define SIU_INT_MCC2 ((uint)0x25 + CPM_IRQ_OFFSET)
358 #define SIU_INT_SCC1 ((uint)0x28 + CPM_IRQ_OFFSET)
359 #define SIU_INT_SCC2 ((uint)0x29 + CPM_IRQ_OFFSET)
360 #define SIU_INT_SCC3 ((uint)0x2a + CPM_IRQ_OFFSET)
361 #define SIU_INT_SCC4 ((uint)0x2b + CPM_IRQ_OFFSET)
362 #define SIU_INT_PC15 ((uint)0x30 + CPM_IRQ_OFFSET)
363 #define SIU_INT_PC14 ((uint)0x31 + CPM_IRQ_OFFSET)
364 #define SIU_INT_PC13 ((uint)0x32 + CPM_IRQ_OFFSET)
365 #define SIU_INT_PC12 ((uint)0x33 + CPM_IRQ_OFFSET)
366 #define SIU_INT_PC11 ((uint)0x34 + CPM_IRQ_OFFSET)
367 #define SIU_INT_PC10 ((uint)0x35 + CPM_IRQ_OFFSET)
368 #define SIU_INT_PC9 ((uint)0x36 + CPM_IRQ_OFFSET)
369 #define SIU_INT_PC8 ((uint)0x37 + CPM_IRQ_OFFSET)
370 #define SIU_INT_PC7 ((uint)0x38 + CPM_IRQ_OFFSET)
371 #define SIU_INT_PC6 ((uint)0x39 + CPM_IRQ_OFFSET)
372 #define SIU_INT_PC5 ((uint)0x3a + CPM_IRQ_OFFSET)
373 #define SIU_INT_PC4 ((uint)0x3b + CPM_IRQ_OFFSET)
374 #define SIU_INT_PC3 ((uint)0x3c + CPM_IRQ_OFFSET)
375 #define SIU_INT_PC2 ((uint)0x3d + CPM_IRQ_OFFSET)
376 #define SIU_INT_PC1 ((uint)0x3e + CPM_IRQ_OFFSET)
377 #define SIU_INT_PC0 ((uint)0x3f + CPM_IRQ_OFFSET)
379 #endif /* CONFIG_8260 */
382 * This gets called from serial.c, which is now used on
383 * powermacs as well as prep/chrp boxes.
384 * Prep and chrp both have cascaded 8259 PICs.
386 static __inline__ int irq_canonicalize(int irq)
388 if (ppc_md.irq_canonicalize)
389 return ppc_md.irq_canonicalize(irq);
395 #define NR_MASK_WORDS ((NR_IRQS + 31) / 32)
396 /* pedantic: these are long because they are used with set_bit --RR */
397 extern unsigned long ppc_cached_irq_mask[NR_MASK_WORDS];
398 extern unsigned long ppc_lost_interrupts[NR_MASK_WORDS];
399 extern atomic_t ppc_n_lost_interrupts;
403 int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
405 #endif /* _ASM_IRQ_H */
406 #endif /* __KERNEL__ */