1 #ifndef _ASM_POWERPC_MPIC_H
2 #define _ASM_POWERPC_MPIC_H
6 #include <linux/sysdev.h>
13 #define MPIC_GREG_BASE 0x01000
15 #define MPIC_GREG_FEATURE_0 0x00000
16 #define MPIC_GREG_FEATURE_LAST_SRC_MASK 0x07ff0000
17 #define MPIC_GREG_FEATURE_LAST_SRC_SHIFT 16
18 #define MPIC_GREG_FEATURE_LAST_CPU_MASK 0x00001f00
19 #define MPIC_GREG_FEATURE_LAST_CPU_SHIFT 8
20 #define MPIC_GREG_FEATURE_VERSION_MASK 0xff
21 #define MPIC_GREG_FEATURE_1 0x00010
22 #define MPIC_GREG_GLOBAL_CONF_0 0x00020
23 #define MPIC_GREG_GCONF_RESET 0x80000000
24 #define MPIC_GREG_GCONF_8259_PTHROU_DIS 0x20000000
25 #define MPIC_GREG_GCONF_NO_BIAS 0x10000000
26 #define MPIC_GREG_GCONF_BASE_MASK 0x000fffff
27 #define MPIC_GREG_GCONF_MCK 0x08000000
28 #define MPIC_GREG_GLOBAL_CONF_1 0x00030
29 #define MPIC_GREG_GLOBAL_CONF_1_SIE 0x08000000
30 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK 0x70000000
31 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO(r) \
32 (((r) << 28) & MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK)
33 #define MPIC_GREG_VENDOR_0 0x00040
34 #define MPIC_GREG_VENDOR_1 0x00050
35 #define MPIC_GREG_VENDOR_2 0x00060
36 #define MPIC_GREG_VENDOR_3 0x00070
37 #define MPIC_GREG_VENDOR_ID 0x00080
38 #define MPIC_GREG_VENDOR_ID_STEPPING_MASK 0x00ff0000
39 #define MPIC_GREG_VENDOR_ID_STEPPING_SHIFT 16
40 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_MASK 0x0000ff00
41 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_SHIFT 8
42 #define MPIC_GREG_VENDOR_ID_VENDOR_ID_MASK 0x000000ff
43 #define MPIC_GREG_PROCESSOR_INIT 0x00090
44 #define MPIC_GREG_IPI_VECTOR_PRI_0 0x000a0
45 #define MPIC_GREG_IPI_VECTOR_PRI_1 0x000b0
46 #define MPIC_GREG_IPI_VECTOR_PRI_2 0x000c0
47 #define MPIC_GREG_IPI_VECTOR_PRI_3 0x000d0
48 #define MPIC_GREG_IPI_STRIDE 0x10
49 #define MPIC_GREG_SPURIOUS 0x000e0
50 #define MPIC_GREG_TIMER_FREQ 0x000f0
56 #define MPIC_TIMER_BASE 0x01100
57 #define MPIC_TIMER_STRIDE 0x40
59 #define MPIC_TIMER_CURRENT_CNT 0x00000
60 #define MPIC_TIMER_BASE_CNT 0x00010
61 #define MPIC_TIMER_VECTOR_PRI 0x00020
62 #define MPIC_TIMER_DESTINATION 0x00030
65 * Per-Processor registers
68 #define MPIC_CPU_THISBASE 0x00000
69 #define MPIC_CPU_BASE 0x20000
70 #define MPIC_CPU_STRIDE 0x01000
72 #define MPIC_CPU_IPI_DISPATCH_0 0x00040
73 #define MPIC_CPU_IPI_DISPATCH_1 0x00050
74 #define MPIC_CPU_IPI_DISPATCH_2 0x00060
75 #define MPIC_CPU_IPI_DISPATCH_3 0x00070
76 #define MPIC_CPU_IPI_DISPATCH_STRIDE 0x00010
77 #define MPIC_CPU_CURRENT_TASK_PRI 0x00080
78 #define MPIC_CPU_TASKPRI_MASK 0x0000000f
79 #define MPIC_CPU_WHOAMI 0x00090
80 #define MPIC_CPU_WHOAMI_MASK 0x0000001f
81 #define MPIC_CPU_INTACK 0x000a0
82 #define MPIC_CPU_EOI 0x000b0
83 #define MPIC_CPU_MCACK 0x000c0
86 * Per-source registers
89 #define MPIC_IRQ_BASE 0x10000
90 #define MPIC_IRQ_STRIDE 0x00020
91 #define MPIC_IRQ_VECTOR_PRI 0x00000
92 #define MPIC_VECPRI_MASK 0x80000000
93 #define MPIC_VECPRI_ACTIVITY 0x40000000 /* Read Only */
94 #define MPIC_VECPRI_PRIORITY_MASK 0x000f0000
95 #define MPIC_VECPRI_PRIORITY_SHIFT 16
96 #define MPIC_VECPRI_VECTOR_MASK 0x000007ff
97 #define MPIC_VECPRI_POLARITY_POSITIVE 0x00800000
98 #define MPIC_VECPRI_POLARITY_NEGATIVE 0x00000000
99 #define MPIC_VECPRI_POLARITY_MASK 0x00800000
100 #define MPIC_VECPRI_SENSE_LEVEL 0x00400000
101 #define MPIC_VECPRI_SENSE_EDGE 0x00000000
102 #define MPIC_VECPRI_SENSE_MASK 0x00400000
103 #define MPIC_IRQ_DESTINATION 0x00010
105 #define MPIC_MAX_IRQ_SOURCES 2048
106 #define MPIC_MAX_CPUS 32
107 #define MPIC_MAX_ISU 32
110 * Tsi108 implementation of MPIC has many differences from the original one
117 #define TSI108_GREG_BASE 0x00000
118 #define TSI108_GREG_FEATURE_0 0x00000
119 #define TSI108_GREG_GLOBAL_CONF_0 0x00004
120 #define TSI108_GREG_VENDOR_ID 0x0000c
121 #define TSI108_GREG_IPI_VECTOR_PRI_0 0x00204 /* Doorbell 0 */
122 #define TSI108_GREG_IPI_STRIDE 0x0c
123 #define TSI108_GREG_SPURIOUS 0x00010
124 #define TSI108_GREG_TIMER_FREQ 0x00014
129 #define TSI108_TIMER_BASE 0x0030
130 #define TSI108_TIMER_STRIDE 0x10
131 #define TSI108_TIMER_CURRENT_CNT 0x00000
132 #define TSI108_TIMER_BASE_CNT 0x00004
133 #define TSI108_TIMER_VECTOR_PRI 0x00008
134 #define TSI108_TIMER_DESTINATION 0x0000c
137 * Per-Processor registers
139 #define TSI108_CPU_BASE 0x00300
140 #define TSI108_CPU_STRIDE 0x00040
141 #define TSI108_CPU_IPI_DISPATCH_0 0x00200
142 #define TSI108_CPU_IPI_DISPATCH_STRIDE 0x00000
143 #define TSI108_CPU_CURRENT_TASK_PRI 0x00000
144 #define TSI108_CPU_WHOAMI 0xffffffff
145 #define TSI108_CPU_INTACK 0x00004
146 #define TSI108_CPU_EOI 0x00008
147 #define TSI108_CPU_MCACK 0x00004 /* Doesn't really exist here */
150 * Per-source registers
152 #define TSI108_IRQ_BASE 0x00100
153 #define TSI108_IRQ_STRIDE 0x00008
154 #define TSI108_IRQ_VECTOR_PRI 0x00000
155 #define TSI108_VECPRI_VECTOR_MASK 0x000000ff
156 #define TSI108_VECPRI_POLARITY_POSITIVE 0x01000000
157 #define TSI108_VECPRI_POLARITY_NEGATIVE 0x00000000
158 #define TSI108_VECPRI_SENSE_LEVEL 0x02000000
159 #define TSI108_VECPRI_SENSE_EDGE 0x00000000
160 #define TSI108_VECPRI_POLARITY_MASK 0x01000000
161 #define TSI108_VECPRI_SENSE_MASK 0x02000000
162 #define TSI108_IRQ_DESTINATION 0x00004
164 /* weird mpic register indices and mask bits in the HW info array */
166 MPIC_IDX_GREG_BASE = 0,
167 MPIC_IDX_GREG_FEATURE_0,
168 MPIC_IDX_GREG_GLOBAL_CONF_0,
169 MPIC_IDX_GREG_VENDOR_ID,
170 MPIC_IDX_GREG_IPI_VECTOR_PRI_0,
171 MPIC_IDX_GREG_IPI_STRIDE,
172 MPIC_IDX_GREG_SPURIOUS,
173 MPIC_IDX_GREG_TIMER_FREQ,
176 MPIC_IDX_TIMER_STRIDE,
177 MPIC_IDX_TIMER_CURRENT_CNT,
178 MPIC_IDX_TIMER_BASE_CNT,
179 MPIC_IDX_TIMER_VECTOR_PRI,
180 MPIC_IDX_TIMER_DESTINATION,
184 MPIC_IDX_CPU_IPI_DISPATCH_0,
185 MPIC_IDX_CPU_IPI_DISPATCH_STRIDE,
186 MPIC_IDX_CPU_CURRENT_TASK_PRI,
194 MPIC_IDX_IRQ_VECTOR_PRI,
196 MPIC_IDX_VECPRI_VECTOR_MASK,
197 MPIC_IDX_VECPRI_POLARITY_POSITIVE,
198 MPIC_IDX_VECPRI_POLARITY_NEGATIVE,
199 MPIC_IDX_VECPRI_SENSE_LEVEL,
200 MPIC_IDX_VECPRI_SENSE_EDGE,
201 MPIC_IDX_VECPRI_POLARITY_MASK,
202 MPIC_IDX_VECPRI_SENSE_MASK,
203 MPIC_IDX_IRQ_DESTINATION,
208 #ifdef CONFIG_MPIC_U3_HT_IRQS
209 /* Fixup table entry */
210 struct mpic_irq_fixup
213 u8 __iomem *applebase;
217 #endif /* CONFIG_MPIC_U3_HT_IRQS */
223 #ifdef CONFIG_PPC_DCR
228 struct mpic_reg_bank {
230 #ifdef CONFIG_PPC_DCR
232 #endif /* CONFIG_PPC_DCR */
235 struct mpic_irq_save {
238 #ifdef CONFIG_MPIC_U3_HT_IRQS
243 /* The instance data of a given MPIC */
246 /* The remapper for this MPIC */
247 struct irq_host *irqhost;
249 /* The "linux" controller struct */
250 struct irq_chip hc_irq;
251 #ifdef CONFIG_MPIC_U3_HT_IRQS
252 struct irq_chip hc_ht_irq;
255 struct irq_chip hc_ipi;
260 /* How many irq sources in a given ISU */
261 unsigned int isu_size;
262 unsigned int isu_shift;
263 unsigned int isu_mask;
264 unsigned int irq_count;
265 /* Number of sources */
266 unsigned int num_sources;
268 unsigned int num_cpus;
269 /* default senses array */
270 unsigned char *senses;
271 unsigned int senses_count;
273 /* vector numbers used for internal sources (ipi/timers) */
274 unsigned int ipi_vecs[4];
275 unsigned int timer_vecs[4];
277 /* Spurious vector to program into unused sources */
278 unsigned int spurious_vec;
280 #ifdef CONFIG_MPIC_U3_HT_IRQS
281 /* The fixup table */
282 struct mpic_irq_fixup *fixups;
283 spinlock_t fixup_lock;
286 /* Register access method */
287 enum mpic_reg_type reg_type;
289 /* The various ioremap'ed bases */
290 struct mpic_reg_bank gregs;
291 struct mpic_reg_bank tmregs;
292 struct mpic_reg_bank cpuregs[MPIC_MAX_CPUS];
293 struct mpic_reg_bank isus[MPIC_MAX_ISU];
295 /* Protected sources */
296 unsigned long *protected;
298 #ifdef CONFIG_MPIC_WEIRD
299 /* Pointer to HW info array */
303 #ifdef CONFIG_PCI_MSI
304 spinlock_t bitmap_lock;
305 unsigned long *hwirq_bitmap;
308 #ifdef CONFIG_MPIC_BROKEN_REGREAD
309 u32 isu_reg0_shadow[MPIC_MAX_IRQ_SOURCES];
315 struct sys_device sysdev;
318 struct mpic_irq_save *save_data;
323 * MPIC flags (passed to mpic_alloc)
325 * The top 4 bits contain an MPIC bhw id that is used to index the
326 * register offsets and some masks when CONFIG_MPIC_WEIRD is set.
327 * Note setting any ID (leaving those bits to 0) means standard MPIC
330 /* This is the primary controller, only that one has IPIs and
331 * has afinity control. A non-primary MPIC always uses CPU0
334 #define MPIC_PRIMARY 0x00000001
336 /* Set this for a big-endian MPIC */
337 #define MPIC_BIG_ENDIAN 0x00000002
339 #define MPIC_U3_HT_IRQS 0x00000004
340 /* Broken IPI registers (autodetected) */
341 #define MPIC_BROKEN_IPI 0x00000008
342 /* MPIC wants a reset */
343 #define MPIC_WANTS_RESET 0x00000010
344 /* Spurious vector requires EOI */
345 #define MPIC_SPV_EOI 0x00000020
346 /* No passthrough disable */
347 #define MPIC_NO_PTHROU_DIS 0x00000040
349 #define MPIC_USES_DCR 0x00000080
350 /* MPIC has 11-bit vector fields (or larger) */
351 #define MPIC_LARGE_VECTORS 0x00000100
352 /* Enable delivery of prio 15 interrupts as MCK instead of EE */
353 #define MPIC_ENABLE_MCK 0x00000200
354 /* Disable bias among target selection, spread interrupts evenly */
355 #define MPIC_NO_BIAS 0x00000400
357 /* MPIC HW modification ID */
358 #define MPIC_REGSET_MASK 0xf0000000
359 #define MPIC_REGSET(val) (((val) & 0xf ) << 28)
360 #define MPIC_GET_REGSET(flags) (((flags) >> 28) & 0xf)
362 #define MPIC_REGSET_STANDARD MPIC_REGSET(0) /* Original MPIC */
363 #define MPIC_REGSET_TSI108 MPIC_REGSET(1) /* Tsi108/109 PIC */
365 /* Allocate the controller structure and setup the linux irq descs
366 * for the range if interrupts passed in. No HW initialization is
367 * actually performed.
369 * @phys_addr: physial base address of the MPIC
370 * @flags: flags, see constants above
371 * @isu_size: number of interrupts in an ISU. Use 0 to use a
372 * standard ISU-less setup (aka powermac)
373 * @irq_offset: first irq number to assign to this mpic
374 * @irq_count: number of irqs to use with this mpic IRQ sources. Pass 0
375 * to match the number of sources
376 * @ipi_offset: first irq number to assign to this mpic IPI sources,
377 * used only on primary mpic
378 * @senses: array of sense values
379 * @senses_num: number of entries in the array
381 * Note about the sense array. If none is passed, all interrupts are
382 * setup to be level negative unless MPIC_U3_HT_IRQS is set in which
383 * case they are edge positive (and the array is ignored anyway).
384 * The values in the array start at the first source of the MPIC,
385 * that is senses[0] correspond to linux irq "irq_offset".
387 extern struct mpic *mpic_alloc(struct device_node *node,
388 phys_addr_t phys_addr,
390 unsigned int isu_size,
391 unsigned int irq_count,
394 /* Assign ISUs, to call before mpic_init()
396 * @mpic: controller structure as returned by mpic_alloc()
397 * @isu_num: ISU number
398 * @phys_addr: physical address of the ISU
400 extern void mpic_assign_isu(struct mpic *mpic, unsigned int isu_num,
401 phys_addr_t phys_addr);
403 /* Set default sense codes
406 * @senses: array of sense codes
407 * @count: size of above array
409 * Optionally provide an array (indexed on hardware interrupt numbers
410 * for this MPIC) of default sense codes for the chip. Those are linux
411 * sense codes IRQ_TYPE_*
413 * The driver gets ownership of the pointer, don't dispose of it or
414 * anything like that. __init only.
416 extern void mpic_set_default_senses(struct mpic *mpic, u8 *senses, int count);
419 /* Initialize the controller. After this has been called, none of the above
420 * should be called again for this mpic
422 extern void mpic_init(struct mpic *mpic);
425 * All of the following functions must only be used after the
426 * ISUs have been assigned and the controller fully initialized
431 /* Change/Read the priority of an interrupt. Default is 8 for irqs and
432 * 10 for IPIs. You can call this on both IPIs and IRQ numbers, but the
433 * IPI number is then the offset'ed (linux irq number mapped to the IPI)
435 extern void mpic_irq_set_priority(unsigned int irq, unsigned int pri);
436 extern unsigned int mpic_irq_get_priority(unsigned int irq);
438 /* Setup a non-boot CPU */
439 extern void mpic_setup_this_cpu(void);
441 /* Clean up for kexec (or cpu offline or ...) */
442 extern void mpic_teardown_this_cpu(int secondary);
444 /* Get the current cpu priority for this cpu (0..15) */
445 extern int mpic_cpu_get_priority(void);
447 /* Set the current cpu priority for this cpu */
448 extern void mpic_cpu_set_priority(int prio);
450 /* Request IPIs on primary mpic */
451 extern void mpic_request_ipis(void);
453 /* Send an IPI (non offseted number 0..3) */
454 extern void mpic_send_ipi(unsigned int ipi_no, unsigned int cpu_mask);
456 /* Send a message (IPI) to a given target (cpu number or MSG_*) */
457 void smp_mpic_message_pass(int target, int msg);
459 /* Unmask a specific virq */
460 extern void mpic_unmask_irq(unsigned int irq);
461 /* Mask a specific virq */
462 extern void mpic_mask_irq(unsigned int irq);
463 /* EOI a specific virq */
464 extern void mpic_end_irq(unsigned int irq);
466 /* Fetch interrupt from a given mpic */
467 extern unsigned int mpic_get_one_irq(struct mpic *mpic);
468 /* This one gets from the primary mpic */
469 extern unsigned int mpic_get_irq(void);
470 /* Fetch Machine Check interrupt from primary mpic */
471 extern unsigned int mpic_get_mcirq(void);
473 /* Set the EPIC clock ratio */
474 void mpic_set_clk_ratio(struct mpic *mpic, u32 clock_ratio);
476 /* Enable/Disable EPIC serial interrupt mode */
477 void mpic_set_serial_int(struct mpic *mpic, int enable);
479 #endif /* __KERNEL__ */
480 #endif /* _ASM_POWERPC_MPIC_H */