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191 lines
5.5 KiB
191 lines
5.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#include <linux/sh_intc.h> |
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#include <linux/irq.h> |
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#include <linux/irqdomain.h> |
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#include <linux/list.h> |
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#include <linux/kernel.h> |
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#include <linux/types.h> |
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#include <linux/radix-tree.h> |
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#include <linux/device.h> |
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#define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \ |
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((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \ |
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((addr_e) << 16) | ((addr_d << 24))) |
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#define _INTC_SHIFT(h) (h & 0x1f) |
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#define _INTC_WIDTH(h) ((h >> 5) & 0xf) |
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#define _INTC_FN(h) ((h >> 9) & 0xf) |
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#define _INTC_MODE(h) ((h >> 13) & 0x7) |
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#define _INTC_ADDR_E(h) ((h >> 16) & 0xff) |
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#define _INTC_ADDR_D(h) ((h >> 24) & 0xff) |
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#ifdef CONFIG_SMP |
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#define IS_SMP(x) (x.smp) |
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#define INTC_REG(d, x, c) (d->reg[(x)] + ((d->smp[(x)] & 0xff) * c)) |
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#define SMP_NR(d, x) ((d->smp[(x)] >> 8) ? (d->smp[(x)] >> 8) : 1) |
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#else |
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#define IS_SMP(x) 0 |
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#define INTC_REG(d, x, c) (d->reg[(x)]) |
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#define SMP_NR(d, x) 1 |
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#endif |
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struct intc_handle_int { |
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unsigned int irq; |
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unsigned long handle; |
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}; |
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struct intc_window { |
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phys_addr_t phys; |
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void __iomem *virt; |
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unsigned long size; |
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}; |
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struct intc_map_entry { |
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intc_enum enum_id; |
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struct intc_desc_int *desc; |
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}; |
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struct intc_subgroup_entry { |
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unsigned int pirq; |
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intc_enum enum_id; |
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unsigned long handle; |
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}; |
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struct intc_desc_int { |
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struct list_head list; |
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struct device dev; |
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struct radix_tree_root tree; |
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raw_spinlock_t lock; |
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unsigned int index; |
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unsigned long *reg; |
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#ifdef CONFIG_SMP |
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unsigned long *smp; |
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#endif |
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unsigned int nr_reg; |
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struct intc_handle_int *prio; |
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unsigned int nr_prio; |
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struct intc_handle_int *sense; |
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unsigned int nr_sense; |
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struct intc_window *window; |
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unsigned int nr_windows; |
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struct irq_domain *domain; |
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struct irq_chip chip; |
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bool skip_suspend; |
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}; |
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enum { |
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REG_FN_ERR = 0, |
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REG_FN_TEST_BASE = 1, |
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REG_FN_WRITE_BASE = 5, |
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REG_FN_MODIFY_BASE = 9 |
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}; |
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enum { MODE_ENABLE_REG = 0, /* Bit(s) set -> interrupt enabled */ |
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MODE_MASK_REG, /* Bit(s) set -> interrupt disabled */ |
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MODE_DUAL_REG, /* Two registers, set bit to enable / disable */ |
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MODE_PRIO_REG, /* Priority value written to enable interrupt */ |
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MODE_PCLR_REG, /* Above plus all bits set to disable interrupt */ |
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}; |
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static inline struct intc_desc_int *get_intc_desc(unsigned int irq) |
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{ |
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struct irq_chip *chip = irq_get_chip(irq); |
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return container_of(chip, struct intc_desc_int, chip); |
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} |
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/* |
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* Grumble. |
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*/ |
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static inline void activate_irq(int irq) |
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{ |
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irq_modify_status(irq, IRQ_NOREQUEST, IRQ_NOPROBE); |
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} |
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static inline int intc_handle_int_cmp(const void *a, const void *b) |
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{ |
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const struct intc_handle_int *_a = a; |
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const struct intc_handle_int *_b = b; |
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return _a->irq - _b->irq; |
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} |
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/* access.c */ |
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extern unsigned long |
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(*intc_reg_fns[])(unsigned long addr, unsigned long h, unsigned long data); |
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extern unsigned long |
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(*intc_enable_fns[])(unsigned long addr, unsigned long handle, |
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unsigned long (*fn)(unsigned long, |
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unsigned long, unsigned long), |
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unsigned int irq); |
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extern unsigned long |
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(*intc_disable_fns[])(unsigned long addr, unsigned long handle, |
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unsigned long (*fn)(unsigned long, |
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unsigned long, unsigned long), |
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unsigned int irq); |
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extern unsigned long |
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(*intc_enable_noprio_fns[])(unsigned long addr, unsigned long handle, |
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unsigned long (*fn)(unsigned long, |
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unsigned long, unsigned long), |
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unsigned int irq); |
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unsigned long intc_phys_to_virt(struct intc_desc_int *d, unsigned long address); |
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unsigned int intc_get_reg(struct intc_desc_int *d, unsigned long address); |
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unsigned int intc_set_field_from_handle(unsigned int value, |
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unsigned int field_value, |
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unsigned int handle); |
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unsigned long intc_get_field_from_handle(unsigned int value, |
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unsigned int handle); |
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/* balancing.c */ |
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#ifdef CONFIG_INTC_BALANCING |
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void intc_balancing_enable(unsigned int irq); |
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void intc_balancing_disable(unsigned int irq); |
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void intc_set_dist_handle(unsigned int irq, struct intc_desc *desc, |
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struct intc_desc_int *d, intc_enum id); |
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#else |
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static inline void intc_balancing_enable(unsigned int irq) { } |
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static inline void intc_balancing_disable(unsigned int irq) { } |
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static inline void |
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intc_set_dist_handle(unsigned int irq, struct intc_desc *desc, |
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struct intc_desc_int *d, intc_enum id) { } |
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#endif |
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/* chip.c */ |
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extern struct irq_chip intc_irq_chip; |
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void _intc_enable(struct irq_data *data, unsigned long handle); |
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/* core.c */ |
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extern struct list_head intc_list; |
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extern raw_spinlock_t intc_big_lock; |
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extern struct bus_type intc_subsys; |
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unsigned int intc_get_dfl_prio_level(void); |
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unsigned int intc_get_prio_level(unsigned int irq); |
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void intc_set_prio_level(unsigned int irq, unsigned int level); |
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/* handle.c */ |
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unsigned int intc_get_mask_handle(struct intc_desc *desc, |
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struct intc_desc_int *d, |
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intc_enum enum_id, int do_grps); |
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unsigned int intc_get_prio_handle(struct intc_desc *desc, |
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struct intc_desc_int *d, |
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intc_enum enum_id, int do_grps); |
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unsigned int intc_get_sense_handle(struct intc_desc *desc, |
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struct intc_desc_int *d, |
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intc_enum enum_id); |
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void intc_set_ack_handle(unsigned int irq, struct intc_desc *desc, |
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struct intc_desc_int *d, intc_enum id); |
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unsigned long intc_get_ack_handle(unsigned int irq); |
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void intc_enable_disable_enum(struct intc_desc *desc, struct intc_desc_int *d, |
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intc_enum enum_id, int enable); |
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/* irqdomain.c */ |
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void intc_irq_domain_init(struct intc_desc_int *d, struct intc_hw_desc *hw); |
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/* virq.c */ |
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void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d); |
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void intc_irq_xlate_set(unsigned int irq, intc_enum id, struct intc_desc_int *d); |
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struct intc_map_entry *intc_irq_xlate_get(unsigned int irq);
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