sh_intc.h 3.6 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef __SH_INTC_H
  3. #define __SH_INTC_H
  4. #include <linux/ioport.h>
  5. #ifdef CONFIG_SUPERH
  6. #define INTC_NR_IRQS 512
  7. #else
  8. #define INTC_NR_IRQS 1024
  9. #endif
  10. /*
  11. * Convert back and forth between INTEVT and IRQ values.
  12. */
  13. #ifdef CONFIG_CPU_HAS_INTEVT /* Avoid IRQ0 (invalid for platform devices) */
  14. #define evt2irq(evt) ((evt) >> 5)
  15. #define irq2evt(irq) ((irq) << 5)
  16. #else
  17. #define evt2irq(evt) (evt)
  18. #define irq2evt(irq) (irq)
  19. #endif
  20. typedef unsigned char intc_enum;
  21. struct intc_vect {
  22. intc_enum enum_id;
  23. unsigned short vect;
  24. };
  25. #define INTC_VECT(enum_id, vect) { enum_id, vect }
  26. #define INTC_IRQ(enum_id, irq) INTC_VECT(enum_id, irq2evt(irq))
  27. struct intc_group {
  28. intc_enum enum_id;
  29. intc_enum enum_ids[32];
  30. };
  31. #define INTC_GROUP(enum_id, ids...) { enum_id, { ids } }
  32. struct intc_subgroup {
  33. unsigned long reg, reg_width;
  34. intc_enum parent_id;
  35. intc_enum enum_ids[32];
  36. };
  37. struct intc_mask_reg {
  38. unsigned long set_reg, clr_reg, reg_width;
  39. intc_enum enum_ids[32];
  40. #ifdef CONFIG_INTC_BALANCING
  41. unsigned long dist_reg;
  42. #endif
  43. #ifdef CONFIG_SMP
  44. unsigned long smp;
  45. #endif
  46. };
  47. struct intc_prio_reg {
  48. unsigned long set_reg, clr_reg, reg_width, field_width;
  49. intc_enum enum_ids[16];
  50. #ifdef CONFIG_SMP
  51. unsigned long smp;
  52. #endif
  53. };
  54. struct intc_sense_reg {
  55. unsigned long reg, reg_width, field_width;
  56. intc_enum enum_ids[16];
  57. };
  58. #ifdef CONFIG_INTC_BALANCING
  59. #define INTC_SMP_BALANCING(reg) .dist_reg = (reg)
  60. #else
  61. #define INTC_SMP_BALANCING(reg)
  62. #endif
  63. #ifdef CONFIG_SMP
  64. #define INTC_SMP(stride, nr) .smp = (stride) | ((nr) << 8)
  65. #else
  66. #define INTC_SMP(stride, nr)
  67. #endif
  68. struct intc_hw_desc {
  69. struct intc_vect *vectors;
  70. unsigned int nr_vectors;
  71. struct intc_group *groups;
  72. unsigned int nr_groups;
  73. struct intc_mask_reg *mask_regs;
  74. unsigned int nr_mask_regs;
  75. struct intc_prio_reg *prio_regs;
  76. unsigned int nr_prio_regs;
  77. struct intc_sense_reg *sense_regs;
  78. unsigned int nr_sense_regs;
  79. struct intc_mask_reg *ack_regs;
  80. unsigned int nr_ack_regs;
  81. struct intc_subgroup *subgroups;
  82. unsigned int nr_subgroups;
  83. };
  84. #define _INTC_SIZEOF_OR_ZERO(a) (_Generic(a, \
  85. typeof(NULL): 0, \
  86. default: sizeof(a)))
  87. #define _INTC_ARRAY(a) a, _INTC_SIZEOF_OR_ZERO(a)/sizeof(*a)
  88. #define INTC_HW_DESC(vectors, groups, mask_regs, \
  89. prio_regs, sense_regs, ack_regs) \
  90. { \
  91. _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \
  92. _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \
  93. _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \
  94. }
  95. struct intc_desc {
  96. char *name;
  97. struct resource *resource;
  98. unsigned int num_resources;
  99. intc_enum force_enable;
  100. intc_enum force_disable;
  101. bool skip_syscore_suspend;
  102. struct intc_hw_desc hw;
  103. };
  104. #define DECLARE_INTC_DESC(symbol, chipname, vectors, groups, \
  105. mask_regs, prio_regs, sense_regs) \
  106. struct intc_desc symbol __initdata = { \
  107. .name = chipname, \
  108. .hw = INTC_HW_DESC(vectors, groups, mask_regs, \
  109. prio_regs, sense_regs, NULL), \
  110. }
  111. #define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups, \
  112. mask_regs, prio_regs, sense_regs, ack_regs) \
  113. struct intc_desc symbol __initdata = { \
  114. .name = chipname, \
  115. .hw = INTC_HW_DESC(vectors, groups, mask_regs, \
  116. prio_regs, sense_regs, ack_regs), \
  117. }
  118. int register_intc_controller(struct intc_desc *desc);
  119. int intc_set_priority(unsigned int irq, unsigned int prio);
  120. int intc_irq_lookup(const char *chipname, intc_enum enum_id);
  121. void intc_finalize(void);
  122. #ifdef CONFIG_INTC_USERIMASK
  123. int register_intc_userimask(unsigned long addr);
  124. #else
  125. static inline int register_intc_userimask(unsigned long addr)
  126. {
  127. return 0;
  128. }
  129. #endif
  130. #endif /* __SH_INTC_H */