1 #ifndef _ASM_POWERPC_MPIC_H
2 #define _ASM_POWERPC_MPIC_H
12 #define MPIC_GREG_BASE 0x01000
14 #define MPIC_GREG_FEATURE_0 0x00000
15 #define MPIC_GREG_FEATURE_LAST_SRC_MASK 0x07ff0000
16 #define MPIC_GREG_FEATURE_LAST_SRC_SHIFT 16
17 #define MPIC_GREG_FEATURE_LAST_CPU_MASK 0x00001f00
18 #define MPIC_GREG_FEATURE_LAST_CPU_SHIFT 8
19 #define MPIC_GREG_FEATURE_VERSION_MASK 0xff
20 #define MPIC_GREG_FEATURE_1 0x00010
21 #define MPIC_GREG_GLOBAL_CONF_0 0x00020
22 #define MPIC_GREG_GCONF_RESET 0x80000000
23 #define MPIC_GREG_GCONF_8259_PTHROU_DIS 0x20000000
24 #define MPIC_GREG_GCONF_BASE_MASK 0x000fffff
25 #define MPIC_GREG_GLOBAL_CONF_1 0x00030
26 #define MPIC_GREG_GLOBAL_CONF_1_SIE 0x08000000
27 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK 0x70000000
28 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO(r) \
29 (((r) << 28) & MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK)
30 #define MPIC_GREG_VENDOR_0 0x00040
31 #define MPIC_GREG_VENDOR_1 0x00050
32 #define MPIC_GREG_VENDOR_2 0x00060
33 #define MPIC_GREG_VENDOR_3 0x00070
34 #define MPIC_GREG_VENDOR_ID 0x00080
35 #define MPIC_GREG_VENDOR_ID_STEPPING_MASK 0x00ff0000
36 #define MPIC_GREG_VENDOR_ID_STEPPING_SHIFT 16
37 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_MASK 0x0000ff00
38 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_SHIFT 8
39 #define MPIC_GREG_VENDOR_ID_VENDOR_ID_MASK 0x000000ff
40 #define MPIC_GREG_PROCESSOR_INIT 0x00090
41 #define MPIC_GREG_IPI_VECTOR_PRI_0 0x000a0
42 #define MPIC_GREG_IPI_VECTOR_PRI_1 0x000b0
43 #define MPIC_GREG_IPI_VECTOR_PRI_2 0x000c0
44 #define MPIC_GREG_IPI_VECTOR_PRI_3 0x000d0
45 #define MPIC_GREG_IPI_STRIDE 0x10
46 #define MPIC_GREG_SPURIOUS 0x000e0
47 #define MPIC_GREG_TIMER_FREQ 0x000f0
53 #define MPIC_TIMER_BASE 0x01100
54 #define MPIC_TIMER_STRIDE 0x40
56 #define MPIC_TIMER_CURRENT_CNT 0x00000
57 #define MPIC_TIMER_BASE_CNT 0x00010
58 #define MPIC_TIMER_VECTOR_PRI 0x00020
59 #define MPIC_TIMER_DESTINATION 0x00030
62 * Per-Processor registers
65 #define MPIC_CPU_THISBASE 0x00000
66 #define MPIC_CPU_BASE 0x20000
67 #define MPIC_CPU_STRIDE 0x01000
69 #define MPIC_CPU_IPI_DISPATCH_0 0x00040
70 #define MPIC_CPU_IPI_DISPATCH_1 0x00050
71 #define MPIC_CPU_IPI_DISPATCH_2 0x00060
72 #define MPIC_CPU_IPI_DISPATCH_3 0x00070
73 #define MPIC_CPU_IPI_DISPATCH_STRIDE 0x00010
74 #define MPIC_CPU_CURRENT_TASK_PRI 0x00080
75 #define MPIC_CPU_TASKPRI_MASK 0x0000000f
76 #define MPIC_CPU_WHOAMI 0x00090
77 #define MPIC_CPU_WHOAMI_MASK 0x0000001f
78 #define MPIC_CPU_INTACK 0x000a0
79 #define MPIC_CPU_EOI 0x000b0
82 * Per-source registers
85 #define MPIC_IRQ_BASE 0x10000
86 #define MPIC_IRQ_STRIDE 0x00020
87 #define MPIC_IRQ_VECTOR_PRI 0x00000
88 #define MPIC_VECPRI_MASK 0x80000000
89 #define MPIC_VECPRI_ACTIVITY 0x40000000 /* Read Only */
90 #define MPIC_VECPRI_PRIORITY_MASK 0x000f0000
91 #define MPIC_VECPRI_PRIORITY_SHIFT 16
92 #define MPIC_VECPRI_VECTOR_MASK 0x000007ff
93 #define MPIC_VECPRI_POLARITY_POSITIVE 0x00800000
94 #define MPIC_VECPRI_POLARITY_NEGATIVE 0x00000000
95 #define MPIC_VECPRI_POLARITY_MASK 0x00800000
96 #define MPIC_VECPRI_SENSE_LEVEL 0x00400000
97 #define MPIC_VECPRI_SENSE_EDGE 0x00000000
98 #define MPIC_VECPRI_SENSE_MASK 0x00400000
99 #define MPIC_IRQ_DESTINATION 0x00010
101 #define MPIC_MAX_IRQ_SOURCES 2048
102 #define MPIC_MAX_CPUS 32
103 #define MPIC_MAX_ISU 32
106 * Tsi108 implementation of MPIC has many differences from the original one
113 #define TSI108_GREG_BASE 0x00000
114 #define TSI108_GREG_FEATURE_0 0x00000
115 #define TSI108_GREG_GLOBAL_CONF_0 0x00004
116 #define TSI108_GREG_VENDOR_ID 0x0000c
117 #define TSI108_GREG_IPI_VECTOR_PRI_0 0x00204 /* Doorbell 0 */
118 #define TSI108_GREG_IPI_STRIDE 0x0c
119 #define TSI108_GREG_SPURIOUS 0x00010
120 #define TSI108_GREG_TIMER_FREQ 0x00014
125 #define TSI108_TIMER_BASE 0x0030
126 #define TSI108_TIMER_STRIDE 0x10
127 #define TSI108_TIMER_CURRENT_CNT 0x00000
128 #define TSI108_TIMER_BASE_CNT 0x00004
129 #define TSI108_TIMER_VECTOR_PRI 0x00008
130 #define TSI108_TIMER_DESTINATION 0x0000c
133 * Per-Processor registers
135 #define TSI108_CPU_BASE 0x00300
136 #define TSI108_CPU_STRIDE 0x00040
137 #define TSI108_CPU_IPI_DISPATCH_0 0x00200
138 #define TSI108_CPU_IPI_DISPATCH_STRIDE 0x00000
139 #define TSI108_CPU_CURRENT_TASK_PRI 0x00000
140 #define TSI108_CPU_WHOAMI 0xffffffff
141 #define TSI108_CPU_INTACK 0x00004
142 #define TSI108_CPU_EOI 0x00008
145 * Per-source registers
147 #define TSI108_IRQ_BASE 0x00100
148 #define TSI108_IRQ_STRIDE 0x00008
149 #define TSI108_IRQ_VECTOR_PRI 0x00000
150 #define TSI108_VECPRI_VECTOR_MASK 0x000000ff
151 #define TSI108_VECPRI_POLARITY_POSITIVE 0x01000000
152 #define TSI108_VECPRI_POLARITY_NEGATIVE 0x00000000
153 #define TSI108_VECPRI_SENSE_LEVEL 0x02000000
154 #define TSI108_VECPRI_SENSE_EDGE 0x00000000
155 #define TSI108_VECPRI_POLARITY_MASK 0x01000000
156 #define TSI108_VECPRI_SENSE_MASK 0x02000000
157 #define TSI108_IRQ_DESTINATION 0x00004
159 /* weird mpic register indices and mask bits in the HW info array */
161 MPIC_IDX_GREG_BASE = 0,
162 MPIC_IDX_GREG_FEATURE_0,
163 MPIC_IDX_GREG_GLOBAL_CONF_0,
164 MPIC_IDX_GREG_VENDOR_ID,
165 MPIC_IDX_GREG_IPI_VECTOR_PRI_0,
166 MPIC_IDX_GREG_IPI_STRIDE,
167 MPIC_IDX_GREG_SPURIOUS,
168 MPIC_IDX_GREG_TIMER_FREQ,
171 MPIC_IDX_TIMER_STRIDE,
172 MPIC_IDX_TIMER_CURRENT_CNT,
173 MPIC_IDX_TIMER_BASE_CNT,
174 MPIC_IDX_TIMER_VECTOR_PRI,
175 MPIC_IDX_TIMER_DESTINATION,
179 MPIC_IDX_CPU_IPI_DISPATCH_0,
180 MPIC_IDX_CPU_IPI_DISPATCH_STRIDE,
181 MPIC_IDX_CPU_CURRENT_TASK_PRI,
188 MPIC_IDX_IRQ_VECTOR_PRI,
190 MPIC_IDX_VECPRI_VECTOR_MASK,
191 MPIC_IDX_VECPRI_POLARITY_POSITIVE,
192 MPIC_IDX_VECPRI_POLARITY_NEGATIVE,
193 MPIC_IDX_VECPRI_SENSE_LEVEL,
194 MPIC_IDX_VECPRI_SENSE_EDGE,
195 MPIC_IDX_VECPRI_POLARITY_MASK,
196 MPIC_IDX_VECPRI_SENSE_MASK,
197 MPIC_IDX_IRQ_DESTINATION,
202 #ifdef CONFIG_MPIC_BROKEN_U3
203 /* Fixup table entry */
204 struct mpic_irq_fixup
207 u8 __iomem *applebase;
211 #endif /* CONFIG_MPIC_BROKEN_U3 */
217 #ifdef CONFIG_PPC_DCR
222 struct mpic_reg_bank {
224 #ifdef CONFIG_PPC_DCR
228 #endif /* CONFIG_PPC_DCR */
231 /* The instance data of a given MPIC */
234 /* The device node of the interrupt controller */
235 struct device_node *of_node;
237 /* The remapper for this MPIC */
238 struct irq_host *irqhost;
240 /* The "linux" controller struct */
241 struct irq_chip hc_irq;
242 #ifdef CONFIG_MPIC_BROKEN_U3
243 struct irq_chip hc_ht_irq;
246 struct irq_chip hc_ipi;
251 /* How many irq sources in a given ISU */
252 unsigned int isu_size;
253 unsigned int isu_shift;
254 unsigned int isu_mask;
255 unsigned int irq_count;
256 /* Number of sources */
257 unsigned int num_sources;
259 unsigned int num_cpus;
260 /* default senses array */
261 unsigned char *senses;
262 unsigned int senses_count;
264 /* vector numbers used for internal sources (ipi/timers) */
265 unsigned int ipi_vecs[4];
266 unsigned int timer_vecs[4];
268 /* Spurious vector to program into unused sources */
269 unsigned int spurious_vec;
271 #ifdef CONFIG_MPIC_BROKEN_U3
272 /* The fixup table */
273 struct mpic_irq_fixup *fixups;
274 spinlock_t fixup_lock;
277 /* Register access method */
278 enum mpic_reg_type reg_type;
280 /* The various ioremap'ed bases */
281 struct mpic_reg_bank gregs;
282 struct mpic_reg_bank tmregs;
283 struct mpic_reg_bank cpuregs[MPIC_MAX_CPUS];
284 struct mpic_reg_bank isus[MPIC_MAX_ISU];
286 #ifdef CONFIG_PPC_DCR
287 unsigned int dcr_base;
290 #ifdef CONFIG_MPIC_WEIRD
291 /* Pointer to HW info array */
300 * MPIC flags (passed to mpic_alloc)
302 * The top 4 bits contain an MPIC bhw id that is used to index the
303 * register offsets and some masks when CONFIG_MPIC_WEIRD is set.
304 * Note setting any ID (leaving those bits to 0) means standard MPIC
307 /* This is the primary controller, only that one has IPIs and
308 * has afinity control. A non-primary MPIC always uses CPU0
311 #define MPIC_PRIMARY 0x00000001
313 /* Set this for a big-endian MPIC */
314 #define MPIC_BIG_ENDIAN 0x00000002
316 #define MPIC_BROKEN_U3 0x00000004
317 /* Broken IPI registers (autodetected) */
318 #define MPIC_BROKEN_IPI 0x00000008
319 /* MPIC wants a reset */
320 #define MPIC_WANTS_RESET 0x00000010
321 /* Spurious vector requires EOI */
322 #define MPIC_SPV_EOI 0x00000020
323 /* No passthrough disable */
324 #define MPIC_NO_PTHROU_DIS 0x00000040
326 #define MPIC_USES_DCR 0x00000080
327 /* MPIC has 11-bit vector fields (or larger) */
328 #define MPIC_LARGE_VECTORS 0x00000100
330 /* MPIC HW modification ID */
331 #define MPIC_REGSET_MASK 0xf0000000
332 #define MPIC_REGSET(val) (((val) & 0xf ) << 28)
333 #define MPIC_GET_REGSET(flags) (((flags) >> 28) & 0xf)
335 #define MPIC_REGSET_STANDARD MPIC_REGSET(0) /* Original MPIC */
336 #define MPIC_REGSET_TSI108 MPIC_REGSET(1) /* Tsi108/109 PIC */
338 /* Allocate the controller structure and setup the linux irq descs
339 * for the range if interrupts passed in. No HW initialization is
340 * actually performed.
342 * @phys_addr: physial base address of the MPIC
343 * @flags: flags, see constants above
344 * @isu_size: number of interrupts in an ISU. Use 0 to use a
345 * standard ISU-less setup (aka powermac)
346 * @irq_offset: first irq number to assign to this mpic
347 * @irq_count: number of irqs to use with this mpic IRQ sources. Pass 0
348 * to match the number of sources
349 * @ipi_offset: first irq number to assign to this mpic IPI sources,
350 * used only on primary mpic
351 * @senses: array of sense values
352 * @senses_num: number of entries in the array
354 * Note about the sense array. If none is passed, all interrupts are
355 * setup to be level negative unless MPIC_BROKEN_U3 is set in which
356 * case they are edge positive (and the array is ignored anyway).
357 * The values in the array start at the first source of the MPIC,
358 * that is senses[0] correspond to linux irq "irq_offset".
360 extern struct mpic *mpic_alloc(struct device_node *node,
361 phys_addr_t phys_addr,
363 unsigned int isu_size,
364 unsigned int irq_count,
367 /* Assign ISUs, to call before mpic_init()
369 * @mpic: controller structure as returned by mpic_alloc()
370 * @isu_num: ISU number
371 * @phys_addr: physical address of the ISU
373 extern void mpic_assign_isu(struct mpic *mpic, unsigned int isu_num,
374 phys_addr_t phys_addr);
376 /* Set default sense codes
379 * @senses: array of sense codes
380 * @count: size of above array
382 * Optionally provide an array (indexed on hardware interrupt numbers
383 * for this MPIC) of default sense codes for the chip. Those are linux
384 * sense codes IRQ_TYPE_*
386 * The driver gets ownership of the pointer, don't dispose of it or
387 * anything like that. __init only.
389 extern void mpic_set_default_senses(struct mpic *mpic, u8 *senses, int count);
392 /* Initialize the controller. After this has been called, none of the above
393 * should be called again for this mpic
395 extern void mpic_init(struct mpic *mpic);
398 * All of the following functions must only be used after the
399 * ISUs have been assigned and the controller fully initialized
404 /* Change/Read the priority of an interrupt. Default is 8 for irqs and
405 * 10 for IPIs. You can call this on both IPIs and IRQ numbers, but the
406 * IPI number is then the offset'ed (linux irq number mapped to the IPI)
408 extern void mpic_irq_set_priority(unsigned int irq, unsigned int pri);
409 extern unsigned int mpic_irq_get_priority(unsigned int irq);
411 /* Setup a non-boot CPU */
412 extern void mpic_setup_this_cpu(void);
414 /* Clean up for kexec (or cpu offline or ...) */
415 extern void mpic_teardown_this_cpu(int secondary);
417 /* Get the current cpu priority for this cpu (0..15) */
418 extern int mpic_cpu_get_priority(void);
420 /* Set the current cpu priority for this cpu */
421 extern void mpic_cpu_set_priority(int prio);
423 /* Request IPIs on primary mpic */
424 extern void mpic_request_ipis(void);
426 /* Send an IPI (non offseted number 0..3) */
427 extern void mpic_send_ipi(unsigned int ipi_no, unsigned int cpu_mask);
429 /* Send a message (IPI) to a given target (cpu number or MSG_*) */
430 void smp_mpic_message_pass(int target, int msg);
432 /* Fetch interrupt from a given mpic */
433 extern unsigned int mpic_get_one_irq(struct mpic *mpic);
434 /* This one gets to the primary mpic */
435 extern unsigned int mpic_get_irq(void);
437 /* Set the EPIC clock ratio */
438 void mpic_set_clk_ratio(struct mpic *mpic, u32 clock_ratio);
440 /* Enable/Disable EPIC serial interrupt mode */
441 void mpic_set_serial_int(struct mpic *mpic, int enable);
443 #endif /* __KERNEL__ */
444 #endif /* _ASM_POWERPC_MPIC_H */