1 #include <linux/sh_intc.h> 2 #include <linux/irq.h> 3 #include <linux/irqdomain.h> 4 #include <linux/list.h> 5 #include <linux/kernel.h> 6 #include <linux/types.h> 7 #include <linux/radix-tree.h> 8 #include <linux/device.h> 9 10 #define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \ 11 ((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \ 12 ((addr_e) << 16) | ((addr_d << 24))) 13 14 #define _INTC_SHIFT(h) (h & 0x1f) 15 #define _INTC_WIDTH(h) ((h >> 5) & 0xf) 16 #define _INTC_FN(h) ((h >> 9) & 0xf) 17 #define _INTC_MODE(h) ((h >> 13) & 0x7) 18 #define _INTC_ADDR_E(h) ((h >> 16) & 0xff) 19 #define _INTC_ADDR_D(h) ((h >> 24) & 0xff) 20 21 #ifdef CONFIG_SMP 22 #define IS_SMP(x) (x.smp) 23 #define INTC_REG(d, x, c) (d->reg[(x)] + ((d->smp[(x)] & 0xff) * c)) 24 #define SMP_NR(d, x) ((d->smp[(x)] >> 8) ? (d->smp[(x)] >> 8) : 1) 25 #else 26 #define IS_SMP(x) 0 27 #define INTC_REG(d, x, c) (d->reg[(x)]) 28 #define SMP_NR(d, x) 1 29 #endif 30 31 struct intc_handle_int { 32 unsigned int irq; 33 unsigned long handle; 34 }; 35 36 struct intc_window { 37 phys_addr_t phys; 38 void __iomem *virt; 39 unsigned long size; 40 }; 41 42 struct intc_map_entry { 43 intc_enum enum_id; 44 struct intc_desc_int *desc; 45 }; 46 47 struct intc_subgroup_entry { 48 unsigned int pirq; 49 intc_enum enum_id; 50 unsigned long handle; 51 }; 52 53 struct intc_desc_int { 54 struct list_head list; 55 struct device dev; 56 struct radix_tree_root tree; 57 raw_spinlock_t lock; 58 unsigned int index; 59 unsigned long *reg; 60 #ifdef CONFIG_SMP 61 unsigned long *smp; 62 #endif 63 unsigned int nr_reg; 64 struct intc_handle_int *prio; 65 unsigned int nr_prio; 66 struct intc_handle_int *sense; 67 unsigned int nr_sense; 68 struct intc_window *window; 69 unsigned int nr_windows; 70 struct irq_domain *domain; 71 struct irq_chip chip; 72 bool skip_suspend; 73 }; 74 75 76 enum { 77 REG_FN_ERR = 0, 78 REG_FN_TEST_BASE = 1, 79 REG_FN_WRITE_BASE = 5, 80 REG_FN_MODIFY_BASE = 9 81 }; 82 83 enum { MODE_ENABLE_REG = 0, /* Bit(s) set -> interrupt enabled */ 84 MODE_MASK_REG, /* Bit(s) set -> interrupt disabled */ 85 MODE_DUAL_REG, /* Two registers, set bit to enable / disable */ 86 MODE_PRIO_REG, /* Priority value written to enable interrupt */ 87 MODE_PCLR_REG, /* Above plus all bits set to disable interrupt */ 88 }; 89 90 static inline struct intc_desc_int *get_intc_desc(unsigned int irq) 91 { 92 struct irq_chip *chip = irq_get_chip(irq); 93 94 return container_of(chip, struct intc_desc_int, chip); 95 } 96 97 /* 98 * Grumble. 99 */ 100 static inline void activate_irq(int irq) 101 { 102 #ifdef CONFIG_ARM 103 /* ARM requires an extra step to clear IRQ_NOREQUEST, which it 104 * sets on behalf of every irq_chip. Also sets IRQ_NOPROBE. 105 */ 106 set_irq_flags(irq, IRQF_VALID); 107 #else 108 /* same effect on other architectures */ 109 irq_set_noprobe(irq); 110 #endif 111 } 112 113 static inline int intc_handle_int_cmp(const void *a, const void *b) 114 { 115 const struct intc_handle_int *_a = a; 116 const struct intc_handle_int *_b = b; 117 118 return _a->irq - _b->irq; 119 } 120 121 /* access.c */ 122 extern unsigned long 123 (*intc_reg_fns[])(unsigned long addr, unsigned long h, unsigned long data); 124 125 extern unsigned long 126 (*intc_enable_fns[])(unsigned long addr, unsigned long handle, 127 unsigned long (*fn)(unsigned long, 128 unsigned long, unsigned long), 129 unsigned int irq); 130 extern unsigned long 131 (*intc_disable_fns[])(unsigned long addr, unsigned long handle, 132 unsigned long (*fn)(unsigned long, 133 unsigned long, unsigned long), 134 unsigned int irq); 135 extern unsigned long 136 (*intc_enable_noprio_fns[])(unsigned long addr, unsigned long handle, 137 unsigned long (*fn)(unsigned long, 138 unsigned long, unsigned long), 139 unsigned int irq); 140 141 unsigned long intc_phys_to_virt(struct intc_desc_int *d, unsigned long address); 142 unsigned int intc_get_reg(struct intc_desc_int *d, unsigned long address); 143 unsigned int intc_set_field_from_handle(unsigned int value, 144 unsigned int field_value, 145 unsigned int handle); 146 unsigned long intc_get_field_from_handle(unsigned int value, 147 unsigned int handle); 148 149 /* balancing.c */ 150 #ifdef CONFIG_INTC_BALANCING 151 void intc_balancing_enable(unsigned int irq); 152 void intc_balancing_disable(unsigned int irq); 153 void intc_set_dist_handle(unsigned int irq, struct intc_desc *desc, 154 struct intc_desc_int *d, intc_enum id); 155 #else 156 static inline void intc_balancing_enable(unsigned int irq) { } 157 static inline void intc_balancing_disable(unsigned int irq) { } 158 static inline void 159 intc_set_dist_handle(unsigned int irq, struct intc_desc *desc, 160 struct intc_desc_int *d, intc_enum id) { } 161 #endif 162 163 /* chip.c */ 164 extern struct irq_chip intc_irq_chip; 165 void _intc_enable(struct irq_data *data, unsigned long handle); 166 167 /* core.c */ 168 extern struct list_head intc_list; 169 extern raw_spinlock_t intc_big_lock; 170 extern struct bus_type intc_subsys; 171 172 unsigned int intc_get_dfl_prio_level(void); 173 unsigned int intc_get_prio_level(unsigned int irq); 174 void intc_set_prio_level(unsigned int irq, unsigned int level); 175 176 /* handle.c */ 177 unsigned int intc_get_mask_handle(struct intc_desc *desc, 178 struct intc_desc_int *d, 179 intc_enum enum_id, int do_grps); 180 unsigned int intc_get_prio_handle(struct intc_desc *desc, 181 struct intc_desc_int *d, 182 intc_enum enum_id, int do_grps); 183 unsigned int intc_get_sense_handle(struct intc_desc *desc, 184 struct intc_desc_int *d, 185 intc_enum enum_id); 186 void intc_set_ack_handle(unsigned int irq, struct intc_desc *desc, 187 struct intc_desc_int *d, intc_enum id); 188 unsigned long intc_get_ack_handle(unsigned int irq); 189 void intc_enable_disable_enum(struct intc_desc *desc, struct intc_desc_int *d, 190 intc_enum enum_id, int enable); 191 192 /* irqdomain.c */ 193 void intc_irq_domain_init(struct intc_desc_int *d, struct intc_hw_desc *hw); 194 195 /* virq.c */ 196 void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d); 197 void intc_irq_xlate_set(unsigned int irq, intc_enum id, struct intc_desc_int *d); 198 struct intc_map_entry *intc_irq_xlate_get(unsigned int irq); 199