1 #ifndef _ASM_POWERPC_MPIC_H
2 #define _ASM_POWERPC_MPIC_H
6 #include <linux/sysdev.h>
8 #include <asm/msi_bitmap.h>
14 #define MPIC_GREG_BASE 0x01000
16 #define MPIC_GREG_FEATURE_0 0x00000
17 #define MPIC_GREG_FEATURE_LAST_SRC_MASK 0x07ff0000
18 #define MPIC_GREG_FEATURE_LAST_SRC_SHIFT 16
19 #define MPIC_GREG_FEATURE_LAST_CPU_MASK 0x00001f00
20 #define MPIC_GREG_FEATURE_LAST_CPU_SHIFT 8
21 #define MPIC_GREG_FEATURE_VERSION_MASK 0xff
22 #define MPIC_GREG_FEATURE_1 0x00010
23 #define MPIC_GREG_GLOBAL_CONF_0 0x00020
24 #define MPIC_GREG_GCONF_RESET 0x80000000
25 /* On the FSL mpic implementations the Mode field is expand to be
27 * 0b00 = pass through (interrupts routed to IRQ0)
30 * 0b11 = External proxy / coreint
32 #define MPIC_GREG_GCONF_COREINT 0x60000000
33 #define MPIC_GREG_GCONF_8259_PTHROU_DIS 0x20000000
34 #define MPIC_GREG_GCONF_NO_BIAS 0x10000000
35 #define MPIC_GREG_GCONF_BASE_MASK 0x000fffff
36 #define MPIC_GREG_GCONF_MCK 0x08000000
37 #define MPIC_GREG_GLOBAL_CONF_1 0x00030
38 #define MPIC_GREG_GLOBAL_CONF_1_SIE 0x08000000
39 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK 0x70000000
40 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO(r) \
41 (((r) << 28) & MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK)
42 #define MPIC_GREG_VENDOR_0 0x00040
43 #define MPIC_GREG_VENDOR_1 0x00050
44 #define MPIC_GREG_VENDOR_2 0x00060
45 #define MPIC_GREG_VENDOR_3 0x00070
46 #define MPIC_GREG_VENDOR_ID 0x00080
47 #define MPIC_GREG_VENDOR_ID_STEPPING_MASK 0x00ff0000
48 #define MPIC_GREG_VENDOR_ID_STEPPING_SHIFT 16
49 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_MASK 0x0000ff00
50 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_SHIFT 8
51 #define MPIC_GREG_VENDOR_ID_VENDOR_ID_MASK 0x000000ff
52 #define MPIC_GREG_PROCESSOR_INIT 0x00090
53 #define MPIC_GREG_IPI_VECTOR_PRI_0 0x000a0
54 #define MPIC_GREG_IPI_VECTOR_PRI_1 0x000b0
55 #define MPIC_GREG_IPI_VECTOR_PRI_2 0x000c0
56 #define MPIC_GREG_IPI_VECTOR_PRI_3 0x000d0
57 #define MPIC_GREG_IPI_STRIDE 0x10
58 #define MPIC_GREG_SPURIOUS 0x000e0
59 #define MPIC_GREG_TIMER_FREQ 0x000f0
65 #define MPIC_TIMER_BASE 0x01100
66 #define MPIC_TIMER_STRIDE 0x40
68 #define MPIC_TIMER_CURRENT_CNT 0x00000
69 #define MPIC_TIMER_BASE_CNT 0x00010
70 #define MPIC_TIMER_VECTOR_PRI 0x00020
71 #define MPIC_TIMER_DESTINATION 0x00030
74 * Per-Processor registers
77 #define MPIC_CPU_THISBASE 0x00000
78 #define MPIC_CPU_BASE 0x20000
79 #define MPIC_CPU_STRIDE 0x01000
81 #define MPIC_CPU_IPI_DISPATCH_0 0x00040
82 #define MPIC_CPU_IPI_DISPATCH_1 0x00050
83 #define MPIC_CPU_IPI_DISPATCH_2 0x00060
84 #define MPIC_CPU_IPI_DISPATCH_3 0x00070
85 #define MPIC_CPU_IPI_DISPATCH_STRIDE 0x00010
86 #define MPIC_CPU_CURRENT_TASK_PRI 0x00080
87 #define MPIC_CPU_TASKPRI_MASK 0x0000000f
88 #define MPIC_CPU_WHOAMI 0x00090
89 #define MPIC_CPU_WHOAMI_MASK 0x0000001f
90 #define MPIC_CPU_INTACK 0x000a0
91 #define MPIC_CPU_EOI 0x000b0
92 #define MPIC_CPU_MCACK 0x000c0
95 * Per-source registers
98 #define MPIC_IRQ_BASE 0x10000
99 #define MPIC_IRQ_STRIDE 0x00020
100 #define MPIC_IRQ_VECTOR_PRI 0x00000
101 #define MPIC_VECPRI_MASK 0x80000000
102 #define MPIC_VECPRI_ACTIVITY 0x40000000 /* Read Only */
103 #define MPIC_VECPRI_PRIORITY_MASK 0x000f0000
104 #define MPIC_VECPRI_PRIORITY_SHIFT 16
105 #define MPIC_VECPRI_VECTOR_MASK 0x000007ff
106 #define MPIC_VECPRI_POLARITY_POSITIVE 0x00800000
107 #define MPIC_VECPRI_POLARITY_NEGATIVE 0x00000000
108 #define MPIC_VECPRI_POLARITY_MASK 0x00800000
109 #define MPIC_VECPRI_SENSE_LEVEL 0x00400000
110 #define MPIC_VECPRI_SENSE_EDGE 0x00000000
111 #define MPIC_VECPRI_SENSE_MASK 0x00400000
112 #define MPIC_IRQ_DESTINATION 0x00010
114 #define MPIC_MAX_IRQ_SOURCES 2048
115 #define MPIC_MAX_CPUS 32
116 #define MPIC_MAX_ISU 32
119 * Tsi108 implementation of MPIC has many differences from the original one
126 #define TSI108_GREG_BASE 0x00000
127 #define TSI108_GREG_FEATURE_0 0x00000
128 #define TSI108_GREG_GLOBAL_CONF_0 0x00004
129 #define TSI108_GREG_VENDOR_ID 0x0000c
130 #define TSI108_GREG_IPI_VECTOR_PRI_0 0x00204 /* Doorbell 0 */
131 #define TSI108_GREG_IPI_STRIDE 0x0c
132 #define TSI108_GREG_SPURIOUS 0x00010
133 #define TSI108_GREG_TIMER_FREQ 0x00014
138 #define TSI108_TIMER_BASE 0x0030
139 #define TSI108_TIMER_STRIDE 0x10
140 #define TSI108_TIMER_CURRENT_CNT 0x00000
141 #define TSI108_TIMER_BASE_CNT 0x00004
142 #define TSI108_TIMER_VECTOR_PRI 0x00008
143 #define TSI108_TIMER_DESTINATION 0x0000c
146 * Per-Processor registers
148 #define TSI108_CPU_BASE 0x00300
149 #define TSI108_CPU_STRIDE 0x00040
150 #define TSI108_CPU_IPI_DISPATCH_0 0x00200
151 #define TSI108_CPU_IPI_DISPATCH_STRIDE 0x00000
152 #define TSI108_CPU_CURRENT_TASK_PRI 0x00000
153 #define TSI108_CPU_WHOAMI 0xffffffff
154 #define TSI108_CPU_INTACK 0x00004
155 #define TSI108_CPU_EOI 0x00008
156 #define TSI108_CPU_MCACK 0x00004 /* Doesn't really exist here */
159 * Per-source registers
161 #define TSI108_IRQ_BASE 0x00100
162 #define TSI108_IRQ_STRIDE 0x00008
163 #define TSI108_IRQ_VECTOR_PRI 0x00000
164 #define TSI108_VECPRI_VECTOR_MASK 0x000000ff
165 #define TSI108_VECPRI_POLARITY_POSITIVE 0x01000000
166 #define TSI108_VECPRI_POLARITY_NEGATIVE 0x00000000
167 #define TSI108_VECPRI_SENSE_LEVEL 0x02000000
168 #define TSI108_VECPRI_SENSE_EDGE 0x00000000
169 #define TSI108_VECPRI_POLARITY_MASK 0x01000000
170 #define TSI108_VECPRI_SENSE_MASK 0x02000000
171 #define TSI108_IRQ_DESTINATION 0x00004
173 /* weird mpic register indices and mask bits in the HW info array */
175 MPIC_IDX_GREG_BASE = 0,
176 MPIC_IDX_GREG_FEATURE_0,
177 MPIC_IDX_GREG_GLOBAL_CONF_0,
178 MPIC_IDX_GREG_VENDOR_ID,
179 MPIC_IDX_GREG_IPI_VECTOR_PRI_0,
180 MPIC_IDX_GREG_IPI_STRIDE,
181 MPIC_IDX_GREG_SPURIOUS,
182 MPIC_IDX_GREG_TIMER_FREQ,
185 MPIC_IDX_TIMER_STRIDE,
186 MPIC_IDX_TIMER_CURRENT_CNT,
187 MPIC_IDX_TIMER_BASE_CNT,
188 MPIC_IDX_TIMER_VECTOR_PRI,
189 MPIC_IDX_TIMER_DESTINATION,
193 MPIC_IDX_CPU_IPI_DISPATCH_0,
194 MPIC_IDX_CPU_IPI_DISPATCH_STRIDE,
195 MPIC_IDX_CPU_CURRENT_TASK_PRI,
203 MPIC_IDX_IRQ_VECTOR_PRI,
205 MPIC_IDX_VECPRI_VECTOR_MASK,
206 MPIC_IDX_VECPRI_POLARITY_POSITIVE,
207 MPIC_IDX_VECPRI_POLARITY_NEGATIVE,
208 MPIC_IDX_VECPRI_SENSE_LEVEL,
209 MPIC_IDX_VECPRI_SENSE_EDGE,
210 MPIC_IDX_VECPRI_POLARITY_MASK,
211 MPIC_IDX_VECPRI_SENSE_MASK,
212 MPIC_IDX_IRQ_DESTINATION,
217 #ifdef CONFIG_MPIC_U3_HT_IRQS
218 /* Fixup table entry */
219 struct mpic_irq_fixup
222 u8 __iomem *applebase;
226 #endif /* CONFIG_MPIC_U3_HT_IRQS */
232 #ifdef CONFIG_PPC_DCR
237 struct mpic_reg_bank {
239 #ifdef CONFIG_PPC_DCR
241 #endif /* CONFIG_PPC_DCR */
244 struct mpic_irq_save {
247 #ifdef CONFIG_MPIC_U3_HT_IRQS
252 /* The instance data of a given MPIC */
255 /* The remapper for this MPIC */
256 struct irq_host *irqhost;
258 /* The "linux" controller struct */
259 struct irq_chip hc_irq;
260 #ifdef CONFIG_MPIC_U3_HT_IRQS
261 struct irq_chip hc_ht_irq;
264 struct irq_chip hc_ipi;
269 /* How many irq sources in a given ISU */
270 unsigned int isu_size;
271 unsigned int isu_shift;
272 unsigned int isu_mask;
273 unsigned int irq_count;
274 /* Number of sources */
275 unsigned int num_sources;
277 unsigned int num_cpus;
278 /* default senses array */
279 unsigned char *senses;
280 unsigned int senses_count;
282 /* vector numbers used for internal sources (ipi/timers) */
283 unsigned int ipi_vecs[4];
284 unsigned int timer_vecs[4];
286 /* Spurious vector to program into unused sources */
287 unsigned int spurious_vec;
289 #ifdef CONFIG_MPIC_U3_HT_IRQS
290 /* The fixup table */
291 struct mpic_irq_fixup *fixups;
292 spinlock_t fixup_lock;
295 /* Register access method */
296 enum mpic_reg_type reg_type;
298 /* The various ioremap'ed bases */
299 struct mpic_reg_bank gregs;
300 struct mpic_reg_bank tmregs;
301 struct mpic_reg_bank cpuregs[MPIC_MAX_CPUS];
302 struct mpic_reg_bank isus[MPIC_MAX_ISU];
304 /* Protected sources */
305 unsigned long *protected;
307 #ifdef CONFIG_MPIC_WEIRD
308 /* Pointer to HW info array */
312 #ifdef CONFIG_PCI_MSI
313 struct msi_bitmap msi_bitmap;
316 #ifdef CONFIG_MPIC_BROKEN_REGREAD
317 u32 isu_reg0_shadow[MPIC_MAX_IRQ_SOURCES];
323 struct sys_device sysdev;
326 struct mpic_irq_save *save_data;
331 * MPIC flags (passed to mpic_alloc)
333 * The top 4 bits contain an MPIC bhw id that is used to index the
334 * register offsets and some masks when CONFIG_MPIC_WEIRD is set.
335 * Note setting any ID (leaving those bits to 0) means standard MPIC
338 /* This is the primary controller, only that one has IPIs and
339 * has afinity control. A non-primary MPIC always uses CPU0
342 #define MPIC_PRIMARY 0x00000001
344 /* Set this for a big-endian MPIC */
345 #define MPIC_BIG_ENDIAN 0x00000002
347 #define MPIC_U3_HT_IRQS 0x00000004
348 /* Broken IPI registers (autodetected) */
349 #define MPIC_BROKEN_IPI 0x00000008
350 /* MPIC wants a reset */
351 #define MPIC_WANTS_RESET 0x00000010
352 /* Spurious vector requires EOI */
353 #define MPIC_SPV_EOI 0x00000020
354 /* No passthrough disable */
355 #define MPIC_NO_PTHROU_DIS 0x00000040
357 #define MPIC_USES_DCR 0x00000080
358 /* MPIC has 11-bit vector fields (or larger) */
359 #define MPIC_LARGE_VECTORS 0x00000100
360 /* Enable delivery of prio 15 interrupts as MCK instead of EE */
361 #define MPIC_ENABLE_MCK 0x00000200
362 /* Disable bias among target selection, spread interrupts evenly */
363 #define MPIC_NO_BIAS 0x00000400
364 /* Ignore NIRQS as reported by FRR */
365 #define MPIC_BROKEN_FRR_NIRQS 0x00000800
366 /* Destination only supports a single CPU at a time */
367 #define MPIC_SINGLE_DEST_CPU 0x00001000
368 /* Enable CoreInt delivery of interrupts */
369 #define MPIC_ENABLE_COREINT 0x00002000
371 /* MPIC HW modification ID */
372 #define MPIC_REGSET_MASK 0xf0000000
373 #define MPIC_REGSET(val) (((val) & 0xf ) << 28)
374 #define MPIC_GET_REGSET(flags) (((flags) >> 28) & 0xf)
376 #define MPIC_REGSET_STANDARD MPIC_REGSET(0) /* Original MPIC */
377 #define MPIC_REGSET_TSI108 MPIC_REGSET(1) /* Tsi108/109 PIC */
379 /* Allocate the controller structure and setup the linux irq descs
380 * for the range if interrupts passed in. No HW initialization is
381 * actually performed.
383 * @phys_addr: physial base address of the MPIC
384 * @flags: flags, see constants above
385 * @isu_size: number of interrupts in an ISU. Use 0 to use a
386 * standard ISU-less setup (aka powermac)
387 * @irq_offset: first irq number to assign to this mpic
388 * @irq_count: number of irqs to use with this mpic IRQ sources. Pass 0
389 * to match the number of sources
390 * @ipi_offset: first irq number to assign to this mpic IPI sources,
391 * used only on primary mpic
392 * @senses: array of sense values
393 * @senses_num: number of entries in the array
395 * Note about the sense array. If none is passed, all interrupts are
396 * setup to be level negative unless MPIC_U3_HT_IRQS is set in which
397 * case they are edge positive (and the array is ignored anyway).
398 * The values in the array start at the first source of the MPIC,
399 * that is senses[0] correspond to linux irq "irq_offset".
401 extern struct mpic *mpic_alloc(struct device_node *node,
402 phys_addr_t phys_addr,
404 unsigned int isu_size,
405 unsigned int irq_count,
408 /* Assign ISUs, to call before mpic_init()
410 * @mpic: controller structure as returned by mpic_alloc()
411 * @isu_num: ISU number
412 * @phys_addr: physical address of the ISU
414 extern void mpic_assign_isu(struct mpic *mpic, unsigned int isu_num,
415 phys_addr_t phys_addr);
417 /* Set default sense codes
420 * @senses: array of sense codes
421 * @count: size of above array
423 * Optionally provide an array (indexed on hardware interrupt numbers
424 * for this MPIC) of default sense codes for the chip. Those are linux
425 * sense codes IRQ_TYPE_*
427 * The driver gets ownership of the pointer, don't dispose of it or
428 * anything like that. __init only.
430 extern void mpic_set_default_senses(struct mpic *mpic, u8 *senses, int count);
433 /* Initialize the controller. After this has been called, none of the above
434 * should be called again for this mpic
436 extern void mpic_init(struct mpic *mpic);
439 * All of the following functions must only be used after the
440 * ISUs have been assigned and the controller fully initialized
445 /* Change the priority of an interrupt. Default is 8 for irqs and
446 * 10 for IPIs. You can call this on both IPIs and IRQ numbers, but the
447 * IPI number is then the offset'ed (linux irq number mapped to the IPI)
449 extern void mpic_irq_set_priority(unsigned int irq, unsigned int pri);
451 /* Setup a non-boot CPU */
452 extern void mpic_setup_this_cpu(void);
454 /* Clean up for kexec (or cpu offline or ...) */
455 extern void mpic_teardown_this_cpu(int secondary);
457 /* Get the current cpu priority for this cpu (0..15) */
458 extern int mpic_cpu_get_priority(void);
460 /* Set the current cpu priority for this cpu */
461 extern void mpic_cpu_set_priority(int prio);
463 /* Request IPIs on primary mpic */
464 extern void mpic_request_ipis(void);
466 /* Send an IPI (non offseted number 0..3) */
467 extern void mpic_send_ipi(unsigned int ipi_no, unsigned int cpu_mask);
469 /* Send a message (IPI) to a given target (cpu number or MSG_*) */
470 void smp_mpic_message_pass(int target, int msg);
472 /* Unmask a specific virq */
473 extern void mpic_unmask_irq(unsigned int irq);
474 /* Mask a specific virq */
475 extern void mpic_mask_irq(unsigned int irq);
476 /* EOI a specific virq */
477 extern void mpic_end_irq(unsigned int irq);
479 /* Fetch interrupt from a given mpic */
480 extern unsigned int mpic_get_one_irq(struct mpic *mpic);
481 /* This one gets from the primary mpic */
482 extern unsigned int mpic_get_irq(void);
483 /* This one gets from the primary mpic via CoreInt*/
484 extern unsigned int mpic_get_coreint_irq(void);
485 /* Fetch Machine Check interrupt from primary mpic */
486 extern unsigned int mpic_get_mcirq(void);
488 /* Set the EPIC clock ratio */
489 void mpic_set_clk_ratio(struct mpic *mpic, u32 clock_ratio);
491 /* Enable/Disable EPIC serial interrupt mode */
492 void mpic_set_serial_int(struct mpic *mpic, int enable);
494 #endif /* __KERNEL__ */
495 #endif /* _ASM_POWERPC_MPIC_H */