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_BASE_MASK 0x000fffff
26 #define MPIC_GREG_GLOBAL_CONF_1 0x00030
27 #define MPIC_GREG_GLOBAL_CONF_1_SIE 0x08000000
28 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK 0x70000000
29 #define MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO(r) \
30 (((r) << 28) & MPIC_GREG_GLOBAL_CONF_1_CLK_RATIO_MASK)
31 #define MPIC_GREG_VENDOR_0 0x00040
32 #define MPIC_GREG_VENDOR_1 0x00050
33 #define MPIC_GREG_VENDOR_2 0x00060
34 #define MPIC_GREG_VENDOR_3 0x00070
35 #define MPIC_GREG_VENDOR_ID 0x00080
36 #define MPIC_GREG_VENDOR_ID_STEPPING_MASK 0x00ff0000
37 #define MPIC_GREG_VENDOR_ID_STEPPING_SHIFT 16
38 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_MASK 0x0000ff00
39 #define MPIC_GREG_VENDOR_ID_DEVICE_ID_SHIFT 8
40 #define MPIC_GREG_VENDOR_ID_VENDOR_ID_MASK 0x000000ff
41 #define MPIC_GREG_PROCESSOR_INIT 0x00090
42 #define MPIC_GREG_IPI_VECTOR_PRI_0 0x000a0
43 #define MPIC_GREG_IPI_VECTOR_PRI_1 0x000b0
44 #define MPIC_GREG_IPI_VECTOR_PRI_2 0x000c0
45 #define MPIC_GREG_IPI_VECTOR_PRI_3 0x000d0
46 #define MPIC_GREG_IPI_STRIDE 0x10
47 #define MPIC_GREG_SPURIOUS 0x000e0
48 #define MPIC_GREG_TIMER_FREQ 0x000f0
54 #define MPIC_TIMER_BASE 0x01100
55 #define MPIC_TIMER_STRIDE 0x40
57 #define MPIC_TIMER_CURRENT_CNT 0x00000
58 #define MPIC_TIMER_BASE_CNT 0x00010
59 #define MPIC_TIMER_VECTOR_PRI 0x00020
60 #define MPIC_TIMER_DESTINATION 0x00030
63 * Per-Processor registers
66 #define MPIC_CPU_THISBASE 0x00000
67 #define MPIC_CPU_BASE 0x20000
68 #define MPIC_CPU_STRIDE 0x01000
70 #define MPIC_CPU_IPI_DISPATCH_0 0x00040
71 #define MPIC_CPU_IPI_DISPATCH_1 0x00050
72 #define MPIC_CPU_IPI_DISPATCH_2 0x00060
73 #define MPIC_CPU_IPI_DISPATCH_3 0x00070
74 #define MPIC_CPU_IPI_DISPATCH_STRIDE 0x00010
75 #define MPIC_CPU_CURRENT_TASK_PRI 0x00080
76 #define MPIC_CPU_TASKPRI_MASK 0x0000000f
77 #define MPIC_CPU_WHOAMI 0x00090
78 #define MPIC_CPU_WHOAMI_MASK 0x0000001f
79 #define MPIC_CPU_INTACK 0x000a0
80 #define MPIC_CPU_EOI 0x000b0
83 * Per-source registers
86 #define MPIC_IRQ_BASE 0x10000
87 #define MPIC_IRQ_STRIDE 0x00020
88 #define MPIC_IRQ_VECTOR_PRI 0x00000
89 #define MPIC_VECPRI_MASK 0x80000000
90 #define MPIC_VECPRI_ACTIVITY 0x40000000 /* Read Only */
91 #define MPIC_VECPRI_PRIORITY_MASK 0x000f0000
92 #define MPIC_VECPRI_PRIORITY_SHIFT 16
93 #define MPIC_VECPRI_VECTOR_MASK 0x000007ff
94 #define MPIC_VECPRI_POLARITY_POSITIVE 0x00800000
95 #define MPIC_VECPRI_POLARITY_NEGATIVE 0x00000000
96 #define MPIC_VECPRI_POLARITY_MASK 0x00800000
97 #define MPIC_VECPRI_SENSE_LEVEL 0x00400000
98 #define MPIC_VECPRI_SENSE_EDGE 0x00000000
99 #define MPIC_VECPRI_SENSE_MASK 0x00400000
100 #define MPIC_IRQ_DESTINATION 0x00010
102 #define MPIC_MAX_IRQ_SOURCES 2048
103 #define MPIC_MAX_CPUS 32
104 #define MPIC_MAX_ISU 32
107 * Tsi108 implementation of MPIC has many differences from the original one
114 #define TSI108_GREG_BASE 0x00000
115 #define TSI108_GREG_FEATURE_0 0x00000
116 #define TSI108_GREG_GLOBAL_CONF_0 0x00004
117 #define TSI108_GREG_VENDOR_ID 0x0000c
118 #define TSI108_GREG_IPI_VECTOR_PRI_0 0x00204 /* Doorbell 0 */
119 #define TSI108_GREG_IPI_STRIDE 0x0c
120 #define TSI108_GREG_SPURIOUS 0x00010
121 #define TSI108_GREG_TIMER_FREQ 0x00014
126 #define TSI108_TIMER_BASE 0x0030
127 #define TSI108_TIMER_STRIDE 0x10
128 #define TSI108_TIMER_CURRENT_CNT 0x00000
129 #define TSI108_TIMER_BASE_CNT 0x00004
130 #define TSI108_TIMER_VECTOR_PRI 0x00008
131 #define TSI108_TIMER_DESTINATION 0x0000c
134 * Per-Processor registers
136 #define TSI108_CPU_BASE 0x00300
137 #define TSI108_CPU_STRIDE 0x00040
138 #define TSI108_CPU_IPI_DISPATCH_0 0x00200
139 #define TSI108_CPU_IPI_DISPATCH_STRIDE 0x00000
140 #define TSI108_CPU_CURRENT_TASK_PRI 0x00000
141 #define TSI108_CPU_WHOAMI 0xffffffff
142 #define TSI108_CPU_INTACK 0x00004
143 #define TSI108_CPU_EOI 0x00008
146 * Per-source registers
148 #define TSI108_IRQ_BASE 0x00100
149 #define TSI108_IRQ_STRIDE 0x00008
150 #define TSI108_IRQ_VECTOR_PRI 0x00000
151 #define TSI108_VECPRI_VECTOR_MASK 0x000000ff
152 #define TSI108_VECPRI_POLARITY_POSITIVE 0x01000000
153 #define TSI108_VECPRI_POLARITY_NEGATIVE 0x00000000
154 #define TSI108_VECPRI_SENSE_LEVEL 0x02000000
155 #define TSI108_VECPRI_SENSE_EDGE 0x00000000
156 #define TSI108_VECPRI_POLARITY_MASK 0x01000000
157 #define TSI108_VECPRI_SENSE_MASK 0x02000000
158 #define TSI108_IRQ_DESTINATION 0x00004
160 /* weird mpic register indices and mask bits in the HW info array */
162 MPIC_IDX_GREG_BASE = 0,
163 MPIC_IDX_GREG_FEATURE_0,
164 MPIC_IDX_GREG_GLOBAL_CONF_0,
165 MPIC_IDX_GREG_VENDOR_ID,
166 MPIC_IDX_GREG_IPI_VECTOR_PRI_0,
167 MPIC_IDX_GREG_IPI_STRIDE,
168 MPIC_IDX_GREG_SPURIOUS,
169 MPIC_IDX_GREG_TIMER_FREQ,
172 MPIC_IDX_TIMER_STRIDE,
173 MPIC_IDX_TIMER_CURRENT_CNT,
174 MPIC_IDX_TIMER_BASE_CNT,
175 MPIC_IDX_TIMER_VECTOR_PRI,
176 MPIC_IDX_TIMER_DESTINATION,
180 MPIC_IDX_CPU_IPI_DISPATCH_0,
181 MPIC_IDX_CPU_IPI_DISPATCH_STRIDE,
182 MPIC_IDX_CPU_CURRENT_TASK_PRI,
189 MPIC_IDX_IRQ_VECTOR_PRI,
191 MPIC_IDX_VECPRI_VECTOR_MASK,
192 MPIC_IDX_VECPRI_POLARITY_POSITIVE,
193 MPIC_IDX_VECPRI_POLARITY_NEGATIVE,
194 MPIC_IDX_VECPRI_SENSE_LEVEL,
195 MPIC_IDX_VECPRI_SENSE_EDGE,
196 MPIC_IDX_VECPRI_POLARITY_MASK,
197 MPIC_IDX_VECPRI_SENSE_MASK,
198 MPIC_IDX_IRQ_DESTINATION,
203 #ifdef CONFIG_MPIC_U3_HT_IRQS
204 /* Fixup table entry */
205 struct mpic_irq_fixup
208 u8 __iomem *applebase;
212 #endif /* CONFIG_MPIC_U3_HT_IRQS */
218 #ifdef CONFIG_PPC_DCR
223 struct mpic_reg_bank {
225 #ifdef CONFIG_PPC_DCR
227 #endif /* CONFIG_PPC_DCR */
230 struct mpic_irq_save {
233 #ifdef CONFIG_MPIC_U3_HT_IRQS
238 /* The instance data of a given MPIC */
241 /* The remapper for this MPIC */
242 struct irq_host *irqhost;
244 /* The "linux" controller struct */
245 struct irq_chip hc_irq;
246 #ifdef CONFIG_MPIC_U3_HT_IRQS
247 struct irq_chip hc_ht_irq;
250 struct irq_chip hc_ipi;
255 /* How many irq sources in a given ISU */
256 unsigned int isu_size;
257 unsigned int isu_shift;
258 unsigned int isu_mask;
259 unsigned int irq_count;
260 /* Number of sources */
261 unsigned int num_sources;
263 unsigned int num_cpus;
264 /* default senses array */
265 unsigned char *senses;
266 unsigned int senses_count;
268 /* vector numbers used for internal sources (ipi/timers) */
269 unsigned int ipi_vecs[4];
270 unsigned int timer_vecs[4];
272 /* Spurious vector to program into unused sources */
273 unsigned int spurious_vec;
275 #ifdef CONFIG_MPIC_U3_HT_IRQS
276 /* The fixup table */
277 struct mpic_irq_fixup *fixups;
278 spinlock_t fixup_lock;
281 /* Register access method */
282 enum mpic_reg_type reg_type;
284 /* The various ioremap'ed bases */
285 struct mpic_reg_bank gregs;
286 struct mpic_reg_bank tmregs;
287 struct mpic_reg_bank cpuregs[MPIC_MAX_CPUS];
288 struct mpic_reg_bank isus[MPIC_MAX_ISU];
290 /* Protected sources */
291 unsigned long *protected;
293 #ifdef CONFIG_MPIC_WEIRD
294 /* Pointer to HW info array */
298 #ifdef CONFIG_PCI_MSI
299 spinlock_t bitmap_lock;
300 unsigned long *hwirq_bitmap;
303 #ifdef CONFIG_MPIC_BROKEN_REGREAD
304 u32 isu_reg0_shadow[MPIC_MAX_IRQ_SOURCES];
310 struct sys_device sysdev;
313 struct mpic_irq_save *save_data;
318 * MPIC flags (passed to mpic_alloc)
320 * The top 4 bits contain an MPIC bhw id that is used to index the
321 * register offsets and some masks when CONFIG_MPIC_WEIRD is set.
322 * Note setting any ID (leaving those bits to 0) means standard MPIC
325 /* This is the primary controller, only that one has IPIs and
326 * has afinity control. A non-primary MPIC always uses CPU0
329 #define MPIC_PRIMARY 0x00000001
331 /* Set this for a big-endian MPIC */
332 #define MPIC_BIG_ENDIAN 0x00000002
334 #define MPIC_U3_HT_IRQS 0x00000004
335 /* Broken IPI registers (autodetected) */
336 #define MPIC_BROKEN_IPI 0x00000008
337 /* MPIC wants a reset */
338 #define MPIC_WANTS_RESET 0x00000010
339 /* Spurious vector requires EOI */
340 #define MPIC_SPV_EOI 0x00000020
341 /* No passthrough disable */
342 #define MPIC_NO_PTHROU_DIS 0x00000040
344 #define MPIC_USES_DCR 0x00000080
345 /* MPIC has 11-bit vector fields (or larger) */
346 #define MPIC_LARGE_VECTORS 0x00000100
348 /* MPIC HW modification ID */
349 #define MPIC_REGSET_MASK 0xf0000000
350 #define MPIC_REGSET(val) (((val) & 0xf ) << 28)
351 #define MPIC_GET_REGSET(flags) (((flags) >> 28) & 0xf)
353 #define MPIC_REGSET_STANDARD MPIC_REGSET(0) /* Original MPIC */
354 #define MPIC_REGSET_TSI108 MPIC_REGSET(1) /* Tsi108/109 PIC */
356 /* Allocate the controller structure and setup the linux irq descs
357 * for the range if interrupts passed in. No HW initialization is
358 * actually performed.
360 * @phys_addr: physial base address of the MPIC
361 * @flags: flags, see constants above
362 * @isu_size: number of interrupts in an ISU. Use 0 to use a
363 * standard ISU-less setup (aka powermac)
364 * @irq_offset: first irq number to assign to this mpic
365 * @irq_count: number of irqs to use with this mpic IRQ sources. Pass 0
366 * to match the number of sources
367 * @ipi_offset: first irq number to assign to this mpic IPI sources,
368 * used only on primary mpic
369 * @senses: array of sense values
370 * @senses_num: number of entries in the array
372 * Note about the sense array. If none is passed, all interrupts are
373 * setup to be level negative unless MPIC_U3_HT_IRQS is set in which
374 * case they are edge positive (and the array is ignored anyway).
375 * The values in the array start at the first source of the MPIC,
376 * that is senses[0] correspond to linux irq "irq_offset".
378 extern struct mpic *mpic_alloc(struct device_node *node,
379 phys_addr_t phys_addr,
381 unsigned int isu_size,
382 unsigned int irq_count,
385 /* Assign ISUs, to call before mpic_init()
387 * @mpic: controller structure as returned by mpic_alloc()
388 * @isu_num: ISU number
389 * @phys_addr: physical address of the ISU
391 extern void mpic_assign_isu(struct mpic *mpic, unsigned int isu_num,
392 phys_addr_t phys_addr);
394 /* Set default sense codes
397 * @senses: array of sense codes
398 * @count: size of above array
400 * Optionally provide an array (indexed on hardware interrupt numbers
401 * for this MPIC) of default sense codes for the chip. Those are linux
402 * sense codes IRQ_TYPE_*
404 * The driver gets ownership of the pointer, don't dispose of it or
405 * anything like that. __init only.
407 extern void mpic_set_default_senses(struct mpic *mpic, u8 *senses, int count);
410 /* Initialize the controller. After this has been called, none of the above
411 * should be called again for this mpic
413 extern void mpic_init(struct mpic *mpic);
416 * All of the following functions must only be used after the
417 * ISUs have been assigned and the controller fully initialized
422 /* Change/Read the priority of an interrupt. Default is 8 for irqs and
423 * 10 for IPIs. You can call this on both IPIs and IRQ numbers, but the
424 * IPI number is then the offset'ed (linux irq number mapped to the IPI)
426 extern void mpic_irq_set_priority(unsigned int irq, unsigned int pri);
427 extern unsigned int mpic_irq_get_priority(unsigned int irq);
429 /* Setup a non-boot CPU */
430 extern void mpic_setup_this_cpu(void);
432 /* Clean up for kexec (or cpu offline or ...) */
433 extern void mpic_teardown_this_cpu(int secondary);
435 /* Get the current cpu priority for this cpu (0..15) */
436 extern int mpic_cpu_get_priority(void);
438 /* Set the current cpu priority for this cpu */
439 extern void mpic_cpu_set_priority(int prio);
441 /* Request IPIs on primary mpic */
442 extern void mpic_request_ipis(void);
444 /* Send an IPI (non offseted number 0..3) */
445 extern void mpic_send_ipi(unsigned int ipi_no, unsigned int cpu_mask);
447 /* Send a message (IPI) to a given target (cpu number or MSG_*) */
448 void smp_mpic_message_pass(int target, int msg);
450 /* Fetch interrupt from a given mpic */
451 extern unsigned int mpic_get_one_irq(struct mpic *mpic);
452 /* This one gets to the primary mpic */
453 extern unsigned int mpic_get_irq(void);
455 /* Set the EPIC clock ratio */
456 void mpic_set_clk_ratio(struct mpic *mpic, u32 clock_ratio);
458 /* Enable/Disable EPIC serial interrupt mode */
459 void mpic_set_serial_int(struct mpic *mpic, int enable);
461 #endif /* __KERNEL__ */
462 #endif /* _ASM_POWERPC_MPIC_H */