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 #define MPIC_GREG_GCONF_8259_PTHROU_DIS 0x20000000
26 #define MPIC_GREG_GCONF_NO_BIAS 0x10000000
27 #define MPIC_GREG_GCONF_BASE_MASK 0x000fffff
28 #define MPIC_GREG_GCONF_MCK 0x08000000
29 #define MPIC_GREG_GLOBAL_CONF_1 0x00030
30 #define MPIC_GREG_GLOBAL_CONF_1_SIE 0x08000000
31 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK 0x70000000
32 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO(r) \
33 (((r) << 28) & MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK)
34 #define MPIC_GREG_VENDOR_0 0x00040
35 #define MPIC_GREG_VENDOR_1 0x00050
36 #define MPIC_GREG_VENDOR_2 0x00060
37 #define MPIC_GREG_VENDOR_3 0x00070
38 #define MPIC_GREG_VENDOR_ID 0x00080
39 #define MPIC_GREG_VENDOR_ID_STEPPING_MASK 0x00ff0000
40 #define MPIC_GREG_VENDOR_ID_STEPPING_SHIFT 16
41 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_MASK 0x0000ff00
42 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_SHIFT 8
43 #define MPIC_GREG_VENDOR_ID_VENDOR_ID_MASK 0x000000ff
44 #define MPIC_GREG_PROCESSOR_INIT 0x00090
45 #define MPIC_GREG_IPI_VECTOR_PRI_0 0x000a0
46 #define MPIC_GREG_IPI_VECTOR_PRI_1 0x000b0
47 #define MPIC_GREG_IPI_VECTOR_PRI_2 0x000c0
48 #define MPIC_GREG_IPI_VECTOR_PRI_3 0x000d0
49 #define MPIC_GREG_IPI_STRIDE 0x10
50 #define MPIC_GREG_SPURIOUS 0x000e0
51 #define MPIC_GREG_TIMER_FREQ 0x000f0
57 #define MPIC_TIMER_BASE 0x01100
58 #define MPIC_TIMER_STRIDE 0x40
60 #define MPIC_TIMER_CURRENT_CNT 0x00000
61 #define MPIC_TIMER_BASE_CNT 0x00010
62 #define MPIC_TIMER_VECTOR_PRI 0x00020
63 #define MPIC_TIMER_DESTINATION 0x00030
66 * Per-Processor registers
69 #define MPIC_CPU_THISBASE 0x00000
70 #define MPIC_CPU_BASE 0x20000
71 #define MPIC_CPU_STRIDE 0x01000
73 #define MPIC_CPU_IPI_DISPATCH_0 0x00040
74 #define MPIC_CPU_IPI_DISPATCH_1 0x00050
75 #define MPIC_CPU_IPI_DISPATCH_2 0x00060
76 #define MPIC_CPU_IPI_DISPATCH_3 0x00070
77 #define MPIC_CPU_IPI_DISPATCH_STRIDE 0x00010
78 #define MPIC_CPU_CURRENT_TASK_PRI 0x00080
79 #define MPIC_CPU_TASKPRI_MASK 0x0000000f
80 #define MPIC_CPU_WHOAMI 0x00090
81 #define MPIC_CPU_WHOAMI_MASK 0x0000001f
82 #define MPIC_CPU_INTACK 0x000a0
83 #define MPIC_CPU_EOI 0x000b0
84 #define MPIC_CPU_MCACK 0x000c0
87 * Per-source registers
90 #define MPIC_IRQ_BASE 0x10000
91 #define MPIC_IRQ_STRIDE 0x00020
92 #define MPIC_IRQ_VECTOR_PRI 0x00000
93 #define MPIC_VECPRI_MASK 0x80000000
94 #define MPIC_VECPRI_ACTIVITY 0x40000000 /* Read Only */
95 #define MPIC_VECPRI_PRIORITY_MASK 0x000f0000
96 #define MPIC_VECPRI_PRIORITY_SHIFT 16
97 #define MPIC_VECPRI_VECTOR_MASK 0x000007ff
98 #define MPIC_VECPRI_POLARITY_POSITIVE 0x00800000
99 #define MPIC_VECPRI_POLARITY_NEGATIVE 0x00000000
100 #define MPIC_VECPRI_POLARITY_MASK 0x00800000
101 #define MPIC_VECPRI_SENSE_LEVEL 0x00400000
102 #define MPIC_VECPRI_SENSE_EDGE 0x00000000
103 #define MPIC_VECPRI_SENSE_MASK 0x00400000
104 #define MPIC_IRQ_DESTINATION 0x00010
106 #define MPIC_MAX_IRQ_SOURCES 2048
107 #define MPIC_MAX_CPUS 32
108 #define MPIC_MAX_ISU 32
111 * Tsi108 implementation of MPIC has many differences from the original one
118 #define TSI108_GREG_BASE 0x00000
119 #define TSI108_GREG_FEATURE_0 0x00000
120 #define TSI108_GREG_GLOBAL_CONF_0 0x00004
121 #define TSI108_GREG_VENDOR_ID 0x0000c
122 #define TSI108_GREG_IPI_VECTOR_PRI_0 0x00204 /* Doorbell 0 */
123 #define TSI108_GREG_IPI_STRIDE 0x0c
124 #define TSI108_GREG_SPURIOUS 0x00010
125 #define TSI108_GREG_TIMER_FREQ 0x00014
130 #define TSI108_TIMER_BASE 0x0030
131 #define TSI108_TIMER_STRIDE 0x10
132 #define TSI108_TIMER_CURRENT_CNT 0x00000
133 #define TSI108_TIMER_BASE_CNT 0x00004
134 #define TSI108_TIMER_VECTOR_PRI 0x00008
135 #define TSI108_TIMER_DESTINATION 0x0000c
138 * Per-Processor registers
140 #define TSI108_CPU_BASE 0x00300
141 #define TSI108_CPU_STRIDE 0x00040
142 #define TSI108_CPU_IPI_DISPATCH_0 0x00200
143 #define TSI108_CPU_IPI_DISPATCH_STRIDE 0x00000
144 #define TSI108_CPU_CURRENT_TASK_PRI 0x00000
145 #define TSI108_CPU_WHOAMI 0xffffffff
146 #define TSI108_CPU_INTACK 0x00004
147 #define TSI108_CPU_EOI 0x00008
148 #define TSI108_CPU_MCACK 0x00004 /* Doesn't really exist here */
151 * Per-source registers
153 #define TSI108_IRQ_BASE 0x00100
154 #define TSI108_IRQ_STRIDE 0x00008
155 #define TSI108_IRQ_VECTOR_PRI 0x00000
156 #define TSI108_VECPRI_VECTOR_MASK 0x000000ff
157 #define TSI108_VECPRI_POLARITY_POSITIVE 0x01000000
158 #define TSI108_VECPRI_POLARITY_NEGATIVE 0x00000000
159 #define TSI108_VECPRI_SENSE_LEVEL 0x02000000
160 #define TSI108_VECPRI_SENSE_EDGE 0x00000000
161 #define TSI108_VECPRI_POLARITY_MASK 0x01000000
162 #define TSI108_VECPRI_SENSE_MASK 0x02000000
163 #define TSI108_IRQ_DESTINATION 0x00004
165 /* weird mpic register indices and mask bits in the HW info array */
167 MPIC_IDX_GREG_BASE = 0,
168 MPIC_IDX_GREG_FEATURE_0,
169 MPIC_IDX_GREG_GLOBAL_CONF_0,
170 MPIC_IDX_GREG_VENDOR_ID,
171 MPIC_IDX_GREG_IPI_VECTOR_PRI_0,
172 MPIC_IDX_GREG_IPI_STRIDE,
173 MPIC_IDX_GREG_SPURIOUS,
174 MPIC_IDX_GREG_TIMER_FREQ,
177 MPIC_IDX_TIMER_STRIDE,
178 MPIC_IDX_TIMER_CURRENT_CNT,
179 MPIC_IDX_TIMER_BASE_CNT,
180 MPIC_IDX_TIMER_VECTOR_PRI,
181 MPIC_IDX_TIMER_DESTINATION,
185 MPIC_IDX_CPU_IPI_DISPATCH_0,
186 MPIC_IDX_CPU_IPI_DISPATCH_STRIDE,
187 MPIC_IDX_CPU_CURRENT_TASK_PRI,
195 MPIC_IDX_IRQ_VECTOR_PRI,
197 MPIC_IDX_VECPRI_VECTOR_MASK,
198 MPIC_IDX_VECPRI_POLARITY_POSITIVE,
199 MPIC_IDX_VECPRI_POLARITY_NEGATIVE,
200 MPIC_IDX_VECPRI_SENSE_LEVEL,
201 MPIC_IDX_VECPRI_SENSE_EDGE,
202 MPIC_IDX_VECPRI_POLARITY_MASK,
203 MPIC_IDX_VECPRI_SENSE_MASK,
204 MPIC_IDX_IRQ_DESTINATION,
209 #ifdef CONFIG_MPIC_U3_HT_IRQS
210 /* Fixup table entry */
211 struct mpic_irq_fixup
214 u8 __iomem *applebase;
218 #endif /* CONFIG_MPIC_U3_HT_IRQS */
224 #ifdef CONFIG_PPC_DCR
229 struct mpic_reg_bank {
231 #ifdef CONFIG_PPC_DCR
233 #endif /* CONFIG_PPC_DCR */
236 struct mpic_irq_save {
239 #ifdef CONFIG_MPIC_U3_HT_IRQS
244 /* The instance data of a given MPIC */
247 /* The remapper for this MPIC */
248 struct irq_host *irqhost;
250 /* The "linux" controller struct */
251 struct irq_chip hc_irq;
252 #ifdef CONFIG_MPIC_U3_HT_IRQS
253 struct irq_chip hc_ht_irq;
256 struct irq_chip hc_ipi;
261 /* How many irq sources in a given ISU */
262 unsigned int isu_size;
263 unsigned int isu_shift;
264 unsigned int isu_mask;
265 unsigned int irq_count;
266 /* Number of sources */
267 unsigned int num_sources;
269 unsigned int num_cpus;
270 /* default senses array */
271 unsigned char *senses;
272 unsigned int senses_count;
274 /* vector numbers used for internal sources (ipi/timers) */
275 unsigned int ipi_vecs[4];
276 unsigned int timer_vecs[4];
278 /* Spurious vector to program into unused sources */
279 unsigned int spurious_vec;
281 #ifdef CONFIG_MPIC_U3_HT_IRQS
282 /* The fixup table */
283 struct mpic_irq_fixup *fixups;
284 spinlock_t fixup_lock;
287 /* Register access method */
288 enum mpic_reg_type reg_type;
290 /* The various ioremap'ed bases */
291 struct mpic_reg_bank gregs;
292 struct mpic_reg_bank tmregs;
293 struct mpic_reg_bank cpuregs[MPIC_MAX_CPUS];
294 struct mpic_reg_bank isus[MPIC_MAX_ISU];
296 /* Protected sources */
297 unsigned long *protected;
299 #ifdef CONFIG_MPIC_WEIRD
300 /* Pointer to HW info array */
304 #ifdef CONFIG_PCI_MSI
305 struct msi_bitmap msi_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
356 /* Ignore NIRQS as reported by FRR */
357 #define MPIC_BROKEN_FRR_NIRQS 0x00000800
358 /* Destination only supports a single CPU at a time */
359 #define MPIC_SINGLE_DEST_CPU 0x00001000
361 /* MPIC HW modification ID */
362 #define MPIC_REGSET_MASK 0xf0000000
363 #define MPIC_REGSET(val) (((val) & 0xf ) << 28)
364 #define MPIC_GET_REGSET(flags) (((flags) >> 28) & 0xf)
366 #define MPIC_REGSET_STANDARD MPIC_REGSET(0) /* Original MPIC */
367 #define MPIC_REGSET_TSI108 MPIC_REGSET(1) /* Tsi108/109 PIC */
369 /* Allocate the controller structure and setup the linux irq descs
370 * for the range if interrupts passed in. No HW initialization is
371 * actually performed.
373 * @phys_addr: physial base address of the MPIC
374 * @flags: flags, see constants above
375 * @isu_size: number of interrupts in an ISU. Use 0 to use a
376 * standard ISU-less setup (aka powermac)
377 * @irq_offset: first irq number to assign to this mpic
378 * @irq_count: number of irqs to use with this mpic IRQ sources. Pass 0
379 * to match the number of sources
380 * @ipi_offset: first irq number to assign to this mpic IPI sources,
381 * used only on primary mpic
382 * @senses: array of sense values
383 * @senses_num: number of entries in the array
385 * Note about the sense array. If none is passed, all interrupts are
386 * setup to be level negative unless MPIC_U3_HT_IRQS is set in which
387 * case they are edge positive (and the array is ignored anyway).
388 * The values in the array start at the first source of the MPIC,
389 * that is senses[0] correspond to linux irq "irq_offset".
391 extern struct mpic *mpic_alloc(struct device_node *node,
392 phys_addr_t phys_addr,
394 unsigned int isu_size,
395 unsigned int irq_count,
398 /* Assign ISUs, to call before mpic_init()
400 * @mpic: controller structure as returned by mpic_alloc()
401 * @isu_num: ISU number
402 * @phys_addr: physical address of the ISU
404 extern void mpic_assign_isu(struct mpic *mpic, unsigned int isu_num,
405 phys_addr_t phys_addr);
407 /* Set default sense codes
410 * @senses: array of sense codes
411 * @count: size of above array
413 * Optionally provide an array (indexed on hardware interrupt numbers
414 * for this MPIC) of default sense codes for the chip. Those are linux
415 * sense codes IRQ_TYPE_*
417 * The driver gets ownership of the pointer, don't dispose of it or
418 * anything like that. __init only.
420 extern void mpic_set_default_senses(struct mpic *mpic, u8 *senses, int count);
423 /* Initialize the controller. After this has been called, none of the above
424 * should be called again for this mpic
426 extern void mpic_init(struct mpic *mpic);
429 * All of the following functions must only be used after the
430 * ISUs have been assigned and the controller fully initialized
435 /* Change the priority of an interrupt. Default is 8 for irqs and
436 * 10 for IPIs. You can call this on both IPIs and IRQ numbers, but the
437 * IPI number is then the offset'ed (linux irq number mapped to the IPI)
439 extern void mpic_irq_set_priority(unsigned int irq, unsigned int pri);
441 /* Setup a non-boot CPU */
442 extern void mpic_setup_this_cpu(void);
444 /* Clean up for kexec (or cpu offline or ...) */
445 extern void mpic_teardown_this_cpu(int secondary);
447 /* Get the current cpu priority for this cpu (0..15) */
448 extern int mpic_cpu_get_priority(void);
450 /* Set the current cpu priority for this cpu */
451 extern void mpic_cpu_set_priority(int prio);
453 /* Request IPIs on primary mpic */
454 extern void mpic_request_ipis(void);
456 /* Send an IPI (non offseted number 0..3) */
457 extern void mpic_send_ipi(unsigned int ipi_no, unsigned int cpu_mask);
459 /* Send a message (IPI) to a given target (cpu number or MSG_*) */
460 void smp_mpic_message_pass(int target, int msg);
462 /* Unmask a specific virq */
463 extern void mpic_unmask_irq(unsigned int irq);
464 /* Mask a specific virq */
465 extern void mpic_mask_irq(unsigned int irq);
466 /* EOI a specific virq */
467 extern void mpic_end_irq(unsigned int irq);
469 /* Fetch interrupt from a given mpic */
470 extern unsigned int mpic_get_one_irq(struct mpic *mpic);
471 /* This one gets from the primary mpic */
472 extern unsigned int mpic_get_irq(void);
473 /* Fetch Machine Check interrupt from primary mpic */
474 extern unsigned int mpic_get_mcirq(void);
476 /* Set the EPIC clock ratio */
477 void mpic_set_clk_ratio(struct mpic *mpic, u32 clock_ratio);
479 /* Enable/Disable EPIC serial interrupt mode */
480 void mpic_set_serial_int(struct mpic *mpic, int enable);
482 #endif /* __KERNEL__ */
483 #endif /* _ASM_POWERPC_MPIC_H */