diff options
Diffstat (limited to 'drivers/sh/intc/internals.h')
| -rw-r--r-- | drivers/sh/intc/internals.h | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/drivers/sh/intc/internals.h b/drivers/sh/intc/internals.h new file mode 100644 index 000000000..fa73c173b --- /dev/null +++ b/drivers/sh/intc/internals.h @@ -0,0 +1,191 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <linux/sh_intc.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> +#include <linux/list.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/radix-tree.h> +#include <linux/device.h> + +#define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \ + ((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \ + ((addr_e) << 16) | ((addr_d << 24))) + +#define _INTC_SHIFT(h) (h & 0x1f) +#define _INTC_WIDTH(h) ((h >> 5) & 0xf) +#define _INTC_FN(h) ((h >> 9) & 0xf) +#define _INTC_MODE(h) ((h >> 13) & 0x7) +#define _INTC_ADDR_E(h) ((h >> 16) & 0xff) +#define _INTC_ADDR_D(h) ((h >> 24) & 0xff) + +#ifdef CONFIG_SMP +#define IS_SMP(x) (x.smp) +#define INTC_REG(d, x, c) (d->reg[(x)] + ((d->smp[(x)] & 0xff) * c)) +#define SMP_NR(d, x) ((d->smp[(x)] >> 8) ? (d->smp[(x)] >> 8) : 1) +#else +#define IS_SMP(x) 0 +#define INTC_REG(d, x, c) (d->reg[(x)]) +#define SMP_NR(d, x) 1 +#endif + +struct intc_handle_int { + unsigned int irq; + unsigned long handle; +}; + +struct intc_window { + phys_addr_t phys; + void __iomem *virt; + unsigned long size; +}; + +struct intc_map_entry { + intc_enum enum_id; + struct intc_desc_int *desc; +}; + +struct intc_subgroup_entry { + unsigned int pirq; + intc_enum enum_id; + unsigned long handle; +}; + +struct intc_desc_int { + struct list_head list; + struct device dev; + struct radix_tree_root tree; + raw_spinlock_t lock; + unsigned int index; + unsigned long *reg; +#ifdef CONFIG_SMP + unsigned long *smp; +#endif + unsigned int nr_reg; + struct intc_handle_int *prio; + unsigned int nr_prio; + struct intc_handle_int *sense; + unsigned int nr_sense; + struct intc_window *window; + unsigned int nr_windows; + struct irq_domain *domain; + struct irq_chip chip; + bool skip_suspend; +}; + + +enum { + REG_FN_ERR = 0, + REG_FN_TEST_BASE = 1, + REG_FN_WRITE_BASE = 5, + REG_FN_MODIFY_BASE = 9 +}; + +enum { MODE_ENABLE_REG = 0, /* Bit(s) set -> interrupt enabled */ + MODE_MASK_REG, /* Bit(s) set -> interrupt disabled */ + MODE_DUAL_REG, /* Two registers, set bit to enable / disable */ + MODE_PRIO_REG, /* Priority value written to enable interrupt */ + MODE_PCLR_REG, /* Above plus all bits set to disable interrupt */ +}; + +static inline struct intc_desc_int *get_intc_desc(unsigned int irq) +{ + struct irq_chip *chip = irq_get_chip(irq); + + return container_of(chip, struct intc_desc_int, chip); +} + +/* + * Grumble. + */ +static inline void activate_irq(int irq) +{ + irq_modify_status(irq, IRQ_NOREQUEST, IRQ_NOPROBE); +} + +static inline int intc_handle_int_cmp(const void *a, const void *b) +{ + const struct intc_handle_int *_a = a; + const struct intc_handle_int *_b = b; + + return _a->irq - _b->irq; +} + +/* access.c */ +extern unsigned long +(*intc_reg_fns[])(unsigned long addr, unsigned long h, unsigned long data); + +extern unsigned long +(*intc_enable_fns[])(unsigned long addr, unsigned long handle, + unsigned long (*fn)(unsigned long, + unsigned long, unsigned long), + unsigned int irq); +extern unsigned long +(*intc_disable_fns[])(unsigned long addr, unsigned long handle, + unsigned long (*fn)(unsigned long, + unsigned long, unsigned long), + unsigned int irq); +extern unsigned long +(*intc_enable_noprio_fns[])(unsigned long addr, unsigned long handle, + unsigned long (*fn)(unsigned long, + unsigned long, unsigned long), + unsigned int irq); + +unsigned long intc_phys_to_virt(struct intc_desc_int *d, unsigned long address); +unsigned int intc_get_reg(struct intc_desc_int *d, unsigned long address); +unsigned int intc_set_field_from_handle(unsigned int value, + unsigned int field_value, + unsigned int handle); +unsigned long intc_get_field_from_handle(unsigned int value, + unsigned int handle); + +/* balancing.c */ +#ifdef CONFIG_INTC_BALANCING +void intc_balancing_enable(unsigned int irq); +void intc_balancing_disable(unsigned int irq); +void intc_set_dist_handle(unsigned int irq, struct intc_desc *desc, + struct intc_desc_int *d, intc_enum id); +#else +static inline void intc_balancing_enable(unsigned int irq) { } +static inline void intc_balancing_disable(unsigned int irq) { } +static inline void +intc_set_dist_handle(unsigned int irq, struct intc_desc *desc, + struct intc_desc_int *d, intc_enum id) { } +#endif + +/* chip.c */ +extern struct irq_chip intc_irq_chip; +void _intc_enable(struct irq_data *data, unsigned long handle); + +/* core.c */ +extern struct list_head intc_list; +extern raw_spinlock_t intc_big_lock; +extern struct bus_type intc_subsys; + +unsigned int intc_get_dfl_prio_level(void); +unsigned int intc_get_prio_level(unsigned int irq); +void intc_set_prio_level(unsigned int irq, unsigned int level); + +/* handle.c */ +unsigned int intc_get_mask_handle(struct intc_desc *desc, + struct intc_desc_int *d, + intc_enum enum_id, int do_grps); +unsigned int intc_get_prio_handle(struct intc_desc *desc, + struct intc_desc_int *d, + intc_enum enum_id, int do_grps); +unsigned int intc_get_sense_handle(struct intc_desc *desc, + struct intc_desc_int *d, + intc_enum enum_id); +void intc_set_ack_handle(unsigned int irq, struct intc_desc *desc, + struct intc_desc_int *d, intc_enum id); +unsigned long intc_get_ack_handle(unsigned int irq); +void intc_enable_disable_enum(struct intc_desc *desc, struct intc_desc_int *d, + intc_enum enum_id, int enable); + +/* irqdomain.c */ +void intc_irq_domain_init(struct intc_desc_int *d, struct intc_hw_desc *hw); + +/* virq.c */ +void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d); +void intc_irq_xlate_set(unsigned int irq, intc_enum id, struct intc_desc_int *d); +struct intc_map_entry *intc_irq_xlate_get(unsigned int irq); |