#define __ASM_SH_HW_IRQ_H
#include <linux/init.h>
+#include <linux/sh_intc.h>
#include <asm/atomic.h>
extern atomic_t irq_err_count;
void register_ipr_controller(struct ipr_desc *);
-typedef unsigned char intc_enum;
-
-struct intc_vect {
- intc_enum enum_id;
- unsigned short vect;
-};
-
-#define INTC_VECT(enum_id, vect) { enum_id, vect }
-#define INTC_IRQ(enum_id, irq) INTC_VECT(enum_id, irq2evt(irq))
-
-struct intc_group {
- intc_enum enum_id;
- intc_enum enum_ids[32];
-};
-
-#define INTC_GROUP(enum_id, ids...) { enum_id, { ids } }
-
-struct intc_mask_reg {
- unsigned long set_reg, clr_reg, reg_width;
- intc_enum enum_ids[32];
-#ifdef CONFIG_SMP
- unsigned long smp;
-#endif
-};
-
-struct intc_prio_reg {
- unsigned long set_reg, clr_reg, reg_width, field_width;
- intc_enum enum_ids[16];
-#ifdef CONFIG_SMP
- unsigned long smp;
-#endif
-};
-
-struct intc_sense_reg {
- unsigned long reg, reg_width, field_width;
- intc_enum enum_ids[16];
-};
-
-#ifdef CONFIG_SMP
-#define INTC_SMP(stride, nr) .smp = (stride) | ((nr) << 8)
-#else
-#define INTC_SMP(stride, nr)
-#endif
-
-struct intc_desc {
- struct intc_vect *vectors;
- unsigned int nr_vectors;
- struct intc_group *groups;
- unsigned int nr_groups;
- struct intc_mask_reg *mask_regs;
- unsigned int nr_mask_regs;
- struct intc_prio_reg *prio_regs;
- unsigned int nr_prio_regs;
- struct intc_sense_reg *sense_regs;
- unsigned int nr_sense_regs;
- char *name;
-#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
- struct intc_mask_reg *ack_regs;
- unsigned int nr_ack_regs;
-#endif
-};
-
-#define _INTC_ARRAY(a) a, sizeof(a)/sizeof(*a)
-#define DECLARE_INTC_DESC(symbol, chipname, vectors, groups, \
- mask_regs, prio_regs, sense_regs) \
-struct intc_desc symbol __initdata = { \
- _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \
- _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \
- _INTC_ARRAY(sense_regs), \
- chipname, \
-}
-
-#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
-#define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups, \
- mask_regs, prio_regs, sense_regs, ack_regs) \
-struct intc_desc symbol __initdata = { \
- _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \
- _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \
- _INTC_ARRAY(sense_regs), \
- chipname, \
- _INTC_ARRAY(ack_regs), \
-}
-#endif
-
-void __init register_intc_controller(struct intc_desc *desc);
-int intc_set_priority(unsigned int irq, unsigned int prio);
-
void __init plat_irq_setup(void);
-#ifdef CONFIG_CPU_SH3
void __init plat_irq_setup_sh3(void);
-#endif
+void __init plat_irq_setup_pins(int mode);
enum { IRQ_MODE_IRQ, IRQ_MODE_IRQ7654, IRQ_MODE_IRQ3210,
IRQ_MODE_IRL7654_MASK, IRQ_MODE_IRL3210_MASK,
IRQ_MODE_IRL7654, IRQ_MODE_IRL3210 };
-void __init plat_irq_setup_pins(int mode);
#endif /* __ASM_SH_HW_IRQ_H */
#
# Makefile for the Linux/SuperH CPU-specifc IRQ handlers.
#
-obj-y += intc.o
-
obj-$(CONFIG_SUPERH32) += imask.o
obj-$(CONFIG_CPU_SH5) += intc-sh5.o
obj-$(CONFIG_CPU_HAS_IPR_IRQ) += ipr.o
+++ /dev/null
-/*
- * Shared interrupt handling code for IPR and INTC2 types of IRQs.
- *
- * Copyright (C) 2007, 2008 Magnus Damm
- *
- * Based on intc2.c and ipr.c
- *
- * Copyright (C) 1999 Niibe Yutaka & Takeshi Yaegashi
- * Copyright (C) 2000 Kazumoto Kojima
- * Copyright (C) 2001 David J. Mckay (david.mckay@st.com)
- * Copyright (C) 2003 Takashi Kusuda <kusuda-takashi@hitachi-ul.co.jp>
- * Copyright (C) 2005, 2006 Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/bootmem.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)
-
-struct intc_handle_int {
- unsigned int irq;
- unsigned long handle;
-};
-
-struct intc_desc_int {
- 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 irq_chip chip;
-};
-
-#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
-
-static unsigned int intc_prio_level[NR_IRQS]; /* for now */
-#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
-static unsigned long ack_handle[NR_IRQS];
-#endif
-
-static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
-{
- struct irq_chip *chip = get_irq_chip(irq);
- return (void *)((char *)chip - offsetof(struct intc_desc_int, chip));
-}
-
-static inline unsigned int set_field(unsigned int value,
- unsigned int field_value,
- unsigned int handle)
-{
- unsigned int width = _INTC_WIDTH(handle);
- unsigned int shift = _INTC_SHIFT(handle);
-
- value &= ~(((1 << width) - 1) << shift);
- value |= field_value << shift;
- return value;
-}
-
-static void write_8(unsigned long addr, unsigned long h, unsigned long data)
-{
- __raw_writeb(set_field(0, data, h), addr);
-}
-
-static void write_16(unsigned long addr, unsigned long h, unsigned long data)
-{
- __raw_writew(set_field(0, data, h), addr);
-}
-
-static void write_32(unsigned long addr, unsigned long h, unsigned long data)
-{
- __raw_writel(set_field(0, data, h), addr);
-}
-
-static void modify_8(unsigned long addr, unsigned long h, unsigned long data)
-{
- unsigned long flags;
- local_irq_save(flags);
- __raw_writeb(set_field(__raw_readb(addr), data, h), addr);
- local_irq_restore(flags);
-}
-
-static void modify_16(unsigned long addr, unsigned long h, unsigned long data)
-{
- unsigned long flags;
- local_irq_save(flags);
- __raw_writew(set_field(__raw_readw(addr), data, h), addr);
- local_irq_restore(flags);
-}
-
-static void modify_32(unsigned long addr, unsigned long h, unsigned long data)
-{
- unsigned long flags;
- local_irq_save(flags);
- __raw_writel(set_field(__raw_readl(addr), data, h), addr);
- local_irq_restore(flags);
-}
-
-enum { REG_FN_ERR = 0, REG_FN_WRITE_BASE = 1, REG_FN_MODIFY_BASE = 5 };
-
-static void (*intc_reg_fns[])(unsigned long addr,
- unsigned long h,
- unsigned long data) = {
- [REG_FN_WRITE_BASE + 0] = write_8,
- [REG_FN_WRITE_BASE + 1] = write_16,
- [REG_FN_WRITE_BASE + 3] = write_32,
- [REG_FN_MODIFY_BASE + 0] = modify_8,
- [REG_FN_MODIFY_BASE + 1] = modify_16,
- [REG_FN_MODIFY_BASE + 3] = modify_32,
-};
-
-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 void intc_mode_field(unsigned long addr,
- unsigned long handle,
- void (*fn)(unsigned long,
- unsigned long,
- unsigned long),
- unsigned int irq)
-{
- fn(addr, handle, ((1 << _INTC_WIDTH(handle)) - 1));
-}
-
-static void intc_mode_zero(unsigned long addr,
- unsigned long handle,
- void (*fn)(unsigned long,
- unsigned long,
- unsigned long),
- unsigned int irq)
-{
- fn(addr, handle, 0);
-}
-
-static void intc_mode_prio(unsigned long addr,
- unsigned long handle,
- void (*fn)(unsigned long,
- unsigned long,
- unsigned long),
- unsigned int irq)
-{
- fn(addr, handle, intc_prio_level[irq]);
-}
-
-static void (*intc_enable_fns[])(unsigned long addr,
- unsigned long handle,
- void (*fn)(unsigned long,
- unsigned long,
- unsigned long),
- unsigned int irq) = {
- [MODE_ENABLE_REG] = intc_mode_field,
- [MODE_MASK_REG] = intc_mode_zero,
- [MODE_DUAL_REG] = intc_mode_field,
- [MODE_PRIO_REG] = intc_mode_prio,
- [MODE_PCLR_REG] = intc_mode_prio,
-};
-
-static void (*intc_disable_fns[])(unsigned long addr,
- unsigned long handle,
- void (*fn)(unsigned long,
- unsigned long,
- unsigned long),
- unsigned int irq) = {
- [MODE_ENABLE_REG] = intc_mode_zero,
- [MODE_MASK_REG] = intc_mode_field,
- [MODE_DUAL_REG] = intc_mode_field,
- [MODE_PRIO_REG] = intc_mode_zero,
- [MODE_PCLR_REG] = intc_mode_field,
-};
-
-static inline void _intc_enable(unsigned int irq, unsigned long handle)
-{
- struct intc_desc_int *d = get_intc_desc(irq);
- unsigned long addr;
- unsigned int cpu;
-
- for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_E(handle)); cpu++) {
- addr = INTC_REG(d, _INTC_ADDR_E(handle), cpu);
- intc_enable_fns[_INTC_MODE(handle)](addr, handle, intc_reg_fns\
- [_INTC_FN(handle)], irq);
- }
-}
-
-static void intc_enable(unsigned int irq)
-{
- _intc_enable(irq, (unsigned long)get_irq_chip_data(irq));
-}
-
-static void intc_disable(unsigned int irq)
-{
- struct intc_desc_int *d = get_intc_desc(irq);
- unsigned long handle = (unsigned long) get_irq_chip_data(irq);
- unsigned long addr;
- unsigned int cpu;
-
- for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_D(handle)); cpu++) {
- addr = INTC_REG(d, _INTC_ADDR_D(handle), cpu);
- intc_disable_fns[_INTC_MODE(handle)](addr, handle,intc_reg_fns\
- [_INTC_FN(handle)], irq);
- }
-}
-
-#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
-static void intc_mask_ack(unsigned int irq)
-{
- struct intc_desc_int *d = get_intc_desc(irq);
- unsigned long handle = ack_handle[irq];
- unsigned long addr;
-
- intc_disable(irq);
-
- /* read register and write zero only to the assocaited bit */
-
- if (handle) {
- addr = INTC_REG(d, _INTC_ADDR_D(handle), 0);
- switch (_INTC_FN(handle)) {
- case REG_FN_MODIFY_BASE + 0: /* 8bit */
- __raw_readb(addr);
- __raw_writeb(0xff ^ set_field(0, 1, handle), addr);
- break;
- case REG_FN_MODIFY_BASE + 1: /* 16bit */
- __raw_readw(addr);
- __raw_writew(0xffff ^ set_field(0, 1, handle), addr);
- break;
- case REG_FN_MODIFY_BASE + 3: /* 32bit */
- __raw_readl(addr);
- __raw_writel(0xffffffff ^ set_field(0, 1, handle), addr);
- break;
- default:
- BUG();
- break;
- }
- }
-}
-#endif
-
-static struct intc_handle_int *intc_find_irq(struct intc_handle_int *hp,
- unsigned int nr_hp,
- unsigned int irq)
-{
- int i;
-
- /* this doesn't scale well, but...
- *
- * this function should only be used for cerain uncommon
- * operations such as intc_set_priority() and intc_set_sense()
- * and in those rare cases performance doesn't matter that much.
- * keeping the memory footprint low is more important.
- *
- * one rather simple way to speed this up and still keep the
- * memory footprint down is to make sure the array is sorted
- * and then perform a bisect to lookup the irq.
- */
-
- for (i = 0; i < nr_hp; i++) {
- if ((hp + i)->irq != irq)
- continue;
-
- return hp + i;
- }
-
- return NULL;
-}
-
-int intc_set_priority(unsigned int irq, unsigned int prio)
-{
- struct intc_desc_int *d = get_intc_desc(irq);
- struct intc_handle_int *ihp;
-
- if (!intc_prio_level[irq] || prio <= 1)
- return -EINVAL;
-
- ihp = intc_find_irq(d->prio, d->nr_prio, irq);
- if (ihp) {
- if (prio >= (1 << _INTC_WIDTH(ihp->handle)))
- return -EINVAL;
-
- intc_prio_level[irq] = prio;
-
- /*
- * only set secondary masking method directly
- * primary masking method is using intc_prio_level[irq]
- * priority level will be set during next enable()
- */
-
- if (_INTC_FN(ihp->handle) != REG_FN_ERR)
- _intc_enable(irq, ihp->handle);
- }
- return 0;
-}
-
-#define VALID(x) (x | 0x80)
-
-static unsigned char intc_irq_sense_table[IRQ_TYPE_SENSE_MASK + 1] = {
- [IRQ_TYPE_EDGE_FALLING] = VALID(0),
- [IRQ_TYPE_EDGE_RISING] = VALID(1),
- [IRQ_TYPE_LEVEL_LOW] = VALID(2),
- /* SH7706, SH7707 and SH7709 do not support high level triggered */
-#if !defined(CONFIG_CPU_SUBTYPE_SH7706) && \
- !defined(CONFIG_CPU_SUBTYPE_SH7707) && \
- !defined(CONFIG_CPU_SUBTYPE_SH7709)
- [IRQ_TYPE_LEVEL_HIGH] = VALID(3),
-#endif
-};
-
-static int intc_set_sense(unsigned int irq, unsigned int type)
-{
- struct intc_desc_int *d = get_intc_desc(irq);
- unsigned char value = intc_irq_sense_table[type & IRQ_TYPE_SENSE_MASK];
- struct intc_handle_int *ihp;
- unsigned long addr;
-
- if (!value)
- return -EINVAL;
-
- ihp = intc_find_irq(d->sense, d->nr_sense, irq);
- if (ihp) {
- addr = INTC_REG(d, _INTC_ADDR_E(ihp->handle), 0);
- intc_reg_fns[_INTC_FN(ihp->handle)](addr, ihp->handle, value);
- }
- return 0;
-}
-
-static unsigned int __init intc_get_reg(struct intc_desc_int *d,
- unsigned long address)
-{
- unsigned int k;
-
- for (k = 0; k < d->nr_reg; k++) {
- if (d->reg[k] == address)
- return k;
- }
-
- BUG();
- return 0;
-}
-
-static intc_enum __init intc_grp_id(struct intc_desc *desc,
- intc_enum enum_id)
-{
- struct intc_group *g = desc->groups;
- unsigned int i, j;
-
- for (i = 0; g && enum_id && i < desc->nr_groups; i++) {
- g = desc->groups + i;
-
- for (j = 0; g->enum_ids[j]; j++) {
- if (g->enum_ids[j] != enum_id)
- continue;
-
- return g->enum_id;
- }
- }
-
- return 0;
-}
-
-static unsigned int __init intc_mask_data(struct intc_desc *desc,
- struct intc_desc_int *d,
- intc_enum enum_id, int do_grps)
-{
- struct intc_mask_reg *mr = desc->mask_regs;
- unsigned int i, j, fn, mode;
- unsigned long reg_e, reg_d;
-
- for (i = 0; mr && enum_id && i < desc->nr_mask_regs; i++) {
- mr = desc->mask_regs + i;
-
- for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
- if (mr->enum_ids[j] != enum_id)
- continue;
-
- if (mr->set_reg && mr->clr_reg) {
- fn = REG_FN_WRITE_BASE;
- mode = MODE_DUAL_REG;
- reg_e = mr->clr_reg;
- reg_d = mr->set_reg;
- } else {
- fn = REG_FN_MODIFY_BASE;
- if (mr->set_reg) {
- mode = MODE_ENABLE_REG;
- reg_e = mr->set_reg;
- reg_d = mr->set_reg;
- } else {
- mode = MODE_MASK_REG;
- reg_e = mr->clr_reg;
- reg_d = mr->clr_reg;
- }
- }
-
- fn += (mr->reg_width >> 3) - 1;
- return _INTC_MK(fn, mode,
- intc_get_reg(d, reg_e),
- intc_get_reg(d, reg_d),
- 1,
- (mr->reg_width - 1) - j);
- }
- }
-
- if (do_grps)
- return intc_mask_data(desc, d, intc_grp_id(desc, enum_id), 0);
-
- return 0;
-}
-
-static unsigned int __init intc_prio_data(struct intc_desc *desc,
- struct intc_desc_int *d,
- intc_enum enum_id, int do_grps)
-{
- struct intc_prio_reg *pr = desc->prio_regs;
- unsigned int i, j, fn, mode, bit;
- unsigned long reg_e, reg_d;
-
- for (i = 0; pr && enum_id && i < desc->nr_prio_regs; i++) {
- pr = desc->prio_regs + i;
-
- for (j = 0; j < ARRAY_SIZE(pr->enum_ids); j++) {
- if (pr->enum_ids[j] != enum_id)
- continue;
-
- if (pr->set_reg && pr->clr_reg) {
- fn = REG_FN_WRITE_BASE;
- mode = MODE_PCLR_REG;
- reg_e = pr->set_reg;
- reg_d = pr->clr_reg;
- } else {
- fn = REG_FN_MODIFY_BASE;
- mode = MODE_PRIO_REG;
- if (!pr->set_reg)
- BUG();
- reg_e = pr->set_reg;
- reg_d = pr->set_reg;
- }
-
- fn += (pr->reg_width >> 3) - 1;
-
- BUG_ON((j + 1) * pr->field_width > pr->reg_width);
-
- bit = pr->reg_width - ((j + 1) * pr->field_width);
-
- return _INTC_MK(fn, mode,
- intc_get_reg(d, reg_e),
- intc_get_reg(d, reg_d),
- pr->field_width, bit);
- }
- }
-
- if (do_grps)
- return intc_prio_data(desc, d, intc_grp_id(desc, enum_id), 0);
-
- return 0;
-}
-
-#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
-static unsigned int __init intc_ack_data(struct intc_desc *desc,
- struct intc_desc_int *d,
- intc_enum enum_id)
-{
- struct intc_mask_reg *mr = desc->ack_regs;
- unsigned int i, j, fn, mode;
- unsigned long reg_e, reg_d;
-
- for (i = 0; mr && enum_id && i < desc->nr_ack_regs; i++) {
- mr = desc->ack_regs + i;
-
- for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
- if (mr->enum_ids[j] != enum_id)
- continue;
-
- fn = REG_FN_MODIFY_BASE;
- mode = MODE_ENABLE_REG;
- reg_e = mr->set_reg;
- reg_d = mr->set_reg;
-
- fn += (mr->reg_width >> 3) - 1;
- return _INTC_MK(fn, mode,
- intc_get_reg(d, reg_e),
- intc_get_reg(d, reg_d),
- 1,
- (mr->reg_width - 1) - j);
- }
- }
-
- return 0;
-}
-#endif
-
-static unsigned int __init intc_sense_data(struct intc_desc *desc,
- struct intc_desc_int *d,
- intc_enum enum_id)
-{
- struct intc_sense_reg *sr = desc->sense_regs;
- unsigned int i, j, fn, bit;
-
- for (i = 0; sr && enum_id && i < desc->nr_sense_regs; i++) {
- sr = desc->sense_regs + i;
-
- for (j = 0; j < ARRAY_SIZE(sr->enum_ids); j++) {
- if (sr->enum_ids[j] != enum_id)
- continue;
-
- fn = REG_FN_MODIFY_BASE;
- fn += (sr->reg_width >> 3) - 1;
-
- BUG_ON((j + 1) * sr->field_width > sr->reg_width);
-
- bit = sr->reg_width - ((j + 1) * sr->field_width);
-
- return _INTC_MK(fn, 0, intc_get_reg(d, sr->reg),
- 0, sr->field_width, bit);
- }
- }
-
- return 0;
-}
-
-static void __init intc_register_irq(struct intc_desc *desc,
- struct intc_desc_int *d,
- intc_enum enum_id,
- unsigned int irq)
-{
- struct intc_handle_int *hp;
- unsigned int data[2], primary;
-
- /* Prefer single interrupt source bitmap over other combinations:
- * 1. bitmap, single interrupt source
- * 2. priority, single interrupt source
- * 3. bitmap, multiple interrupt sources (groups)
- * 4. priority, multiple interrupt sources (groups)
- */
-
- data[0] = intc_mask_data(desc, d, enum_id, 0);
- data[1] = intc_prio_data(desc, d, enum_id, 0);
-
- primary = 0;
- if (!data[0] && data[1])
- primary = 1;
-
- data[0] = data[0] ? data[0] : intc_mask_data(desc, d, enum_id, 1);
- data[1] = data[1] ? data[1] : intc_prio_data(desc, d, enum_id, 1);
-
- if (!data[primary])
- primary ^= 1;
-
- BUG_ON(!data[primary]); /* must have primary masking method */
-
- disable_irq_nosync(irq);
- set_irq_chip_and_handler_name(irq, &d->chip,
- handle_level_irq, "level");
- set_irq_chip_data(irq, (void *)data[primary]);
-
- /* set priority level
- * - this needs to be at least 2 for 5-bit priorities on 7780
- */
- intc_prio_level[irq] = 2;
-
- /* enable secondary masking method if present */
- if (data[!primary])
- _intc_enable(irq, data[!primary]);
-
- /* add irq to d->prio list if priority is available */
- if (data[1]) {
- hp = d->prio + d->nr_prio;
- hp->irq = irq;
- hp->handle = data[1];
-
- if (primary) {
- /*
- * only secondary priority should access registers, so
- * set _INTC_FN(h) = REG_FN_ERR for intc_set_priority()
- */
-
- hp->handle &= ~_INTC_MK(0x0f, 0, 0, 0, 0, 0);
- hp->handle |= _INTC_MK(REG_FN_ERR, 0, 0, 0, 0, 0);
- }
- d->nr_prio++;
- }
-
- /* add irq to d->sense list if sense is available */
- data[0] = intc_sense_data(desc, d, enum_id);
- if (data[0]) {
- (d->sense + d->nr_sense)->irq = irq;
- (d->sense + d->nr_sense)->handle = data[0];
- d->nr_sense++;
- }
-
- /* irq should be disabled by default */
- d->chip.mask(irq);
-
-#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
- if (desc->ack_regs)
- ack_handle[irq] = intc_ack_data(desc, d, enum_id);
-#endif
-}
-
-static unsigned int __init save_reg(struct intc_desc_int *d,
- unsigned int cnt,
- unsigned long value,
- unsigned int smp)
-{
- if (value) {
- d->reg[cnt] = value;
-#ifdef CONFIG_SMP
- d->smp[cnt] = smp;
-#endif
- return 1;
- }
-
- return 0;
-}
-
-
-void __init register_intc_controller(struct intc_desc *desc)
-{
- unsigned int i, k, smp;
- struct intc_desc_int *d;
-
- d = alloc_bootmem(sizeof(*d));
-
- d->nr_reg = desc->mask_regs ? desc->nr_mask_regs * 2 : 0;
- d->nr_reg += desc->prio_regs ? desc->nr_prio_regs * 2 : 0;
- d->nr_reg += desc->sense_regs ? desc->nr_sense_regs : 0;
-
-#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
- d->nr_reg += desc->ack_regs ? desc->nr_ack_regs : 0;
-#endif
- d->reg = alloc_bootmem(d->nr_reg * sizeof(*d->reg));
-#ifdef CONFIG_SMP
- d->smp = alloc_bootmem(d->nr_reg * sizeof(*d->smp));
-#endif
- k = 0;
-
- if (desc->mask_regs) {
- for (i = 0; i < desc->nr_mask_regs; i++) {
- smp = IS_SMP(desc->mask_regs[i]);
- k += save_reg(d, k, desc->mask_regs[i].set_reg, smp);
- k += save_reg(d, k, desc->mask_regs[i].clr_reg, smp);
- }
- }
-
- if (desc->prio_regs) {
- d->prio = alloc_bootmem(desc->nr_vectors * sizeof(*d->prio));
-
- for (i = 0; i < desc->nr_prio_regs; i++) {
- smp = IS_SMP(desc->prio_regs[i]);
- k += save_reg(d, k, desc->prio_regs[i].set_reg, smp);
- k += save_reg(d, k, desc->prio_regs[i].clr_reg, smp);
- }
- }
-
- if (desc->sense_regs) {
- d->sense = alloc_bootmem(desc->nr_vectors * sizeof(*d->sense));
-
- for (i = 0; i < desc->nr_sense_regs; i++) {
- k += save_reg(d, k, desc->sense_regs[i].reg, 0);
- }
- }
-
- d->chip.name = desc->name;
- d->chip.mask = intc_disable;
- d->chip.unmask = intc_enable;
- d->chip.mask_ack = intc_disable;
- d->chip.set_type = intc_set_sense;
-
-#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
- if (desc->ack_regs) {
- for (i = 0; i < desc->nr_ack_regs; i++)
- k += save_reg(d, k, desc->ack_regs[i].set_reg, 0);
-
- d->chip.mask_ack = intc_mask_ack;
- }
-#endif
-
- BUG_ON(k > 256); /* _INTC_ADDR_E() and _INTC_ADDR_D() are 8 bits */
-
- for (i = 0; i < desc->nr_vectors; i++) {
- struct intc_vect *vect = desc->vectors + i;
-
- intc_register_irq(desc, d, vect->enum_id, evt2irq(vect->vect));
- }
-}
#
# Makefile for the SuperH specific drivers.
#
-
obj-$(CONFIG_SUPERHYWAY) += superhyway/
obj-$(CONFIG_MAPLE) += maple/
+obj-y += intc.o
--- /dev/null
+/*
+ * Shared interrupt handling code for IPR and INTC2 types of IRQs.
+ *
+ * Copyright (C) 2007, 2008 Magnus Damm
+ *
+ * Based on intc2.c and ipr.c
+ *
+ * Copyright (C) 1999 Niibe Yutaka & Takeshi Yaegashi
+ * Copyright (C) 2000 Kazumoto Kojima
+ * Copyright (C) 2001 David J. Mckay (david.mckay@st.com)
+ * Copyright (C) 2003 Takashi Kusuda <kusuda-takashi@hitachi-ul.co.jp>
+ * Copyright (C) 2005, 2006 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/bootmem.h>
+#include <linux/sh_intc.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)
+
+struct intc_handle_int {
+ unsigned int irq;
+ unsigned long handle;
+};
+
+struct intc_desc_int {
+ 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 irq_chip chip;
+};
+
+#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
+
+static unsigned int intc_prio_level[NR_IRQS]; /* for now */
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+static unsigned long ack_handle[NR_IRQS];
+#endif
+
+static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
+{
+ struct irq_chip *chip = get_irq_chip(irq);
+ return (void *)((char *)chip - offsetof(struct intc_desc_int, chip));
+}
+
+static inline unsigned int set_field(unsigned int value,
+ unsigned int field_value,
+ unsigned int handle)
+{
+ unsigned int width = _INTC_WIDTH(handle);
+ unsigned int shift = _INTC_SHIFT(handle);
+
+ value &= ~(((1 << width) - 1) << shift);
+ value |= field_value << shift;
+ return value;
+}
+
+static void write_8(unsigned long addr, unsigned long h, unsigned long data)
+{
+ __raw_writeb(set_field(0, data, h), addr);
+}
+
+static void write_16(unsigned long addr, unsigned long h, unsigned long data)
+{
+ __raw_writew(set_field(0, data, h), addr);
+}
+
+static void write_32(unsigned long addr, unsigned long h, unsigned long data)
+{
+ __raw_writel(set_field(0, data, h), addr);
+}
+
+static void modify_8(unsigned long addr, unsigned long h, unsigned long data)
+{
+ unsigned long flags;
+ local_irq_save(flags);
+ __raw_writeb(set_field(__raw_readb(addr), data, h), addr);
+ local_irq_restore(flags);
+}
+
+static void modify_16(unsigned long addr, unsigned long h, unsigned long data)
+{
+ unsigned long flags;
+ local_irq_save(flags);
+ __raw_writew(set_field(__raw_readw(addr), data, h), addr);
+ local_irq_restore(flags);
+}
+
+static void modify_32(unsigned long addr, unsigned long h, unsigned long data)
+{
+ unsigned long flags;
+ local_irq_save(flags);
+ __raw_writel(set_field(__raw_readl(addr), data, h), addr);
+ local_irq_restore(flags);
+}
+
+enum { REG_FN_ERR = 0, REG_FN_WRITE_BASE = 1, REG_FN_MODIFY_BASE = 5 };
+
+static void (*intc_reg_fns[])(unsigned long addr,
+ unsigned long h,
+ unsigned long data) = {
+ [REG_FN_WRITE_BASE + 0] = write_8,
+ [REG_FN_WRITE_BASE + 1] = write_16,
+ [REG_FN_WRITE_BASE + 3] = write_32,
+ [REG_FN_MODIFY_BASE + 0] = modify_8,
+ [REG_FN_MODIFY_BASE + 1] = modify_16,
+ [REG_FN_MODIFY_BASE + 3] = modify_32,
+};
+
+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 void intc_mode_field(unsigned long addr,
+ unsigned long handle,
+ void (*fn)(unsigned long,
+ unsigned long,
+ unsigned long),
+ unsigned int irq)
+{
+ fn(addr, handle, ((1 << _INTC_WIDTH(handle)) - 1));
+}
+
+static void intc_mode_zero(unsigned long addr,
+ unsigned long handle,
+ void (*fn)(unsigned long,
+ unsigned long,
+ unsigned long),
+ unsigned int irq)
+{
+ fn(addr, handle, 0);
+}
+
+static void intc_mode_prio(unsigned long addr,
+ unsigned long handle,
+ void (*fn)(unsigned long,
+ unsigned long,
+ unsigned long),
+ unsigned int irq)
+{
+ fn(addr, handle, intc_prio_level[irq]);
+}
+
+static void (*intc_enable_fns[])(unsigned long addr,
+ unsigned long handle,
+ void (*fn)(unsigned long,
+ unsigned long,
+ unsigned long),
+ unsigned int irq) = {
+ [MODE_ENABLE_REG] = intc_mode_field,
+ [MODE_MASK_REG] = intc_mode_zero,
+ [MODE_DUAL_REG] = intc_mode_field,
+ [MODE_PRIO_REG] = intc_mode_prio,
+ [MODE_PCLR_REG] = intc_mode_prio,
+};
+
+static void (*intc_disable_fns[])(unsigned long addr,
+ unsigned long handle,
+ void (*fn)(unsigned long,
+ unsigned long,
+ unsigned long),
+ unsigned int irq) = {
+ [MODE_ENABLE_REG] = intc_mode_zero,
+ [MODE_MASK_REG] = intc_mode_field,
+ [MODE_DUAL_REG] = intc_mode_field,
+ [MODE_PRIO_REG] = intc_mode_zero,
+ [MODE_PCLR_REG] = intc_mode_field,
+};
+
+static inline void _intc_enable(unsigned int irq, unsigned long handle)
+{
+ struct intc_desc_int *d = get_intc_desc(irq);
+ unsigned long addr;
+ unsigned int cpu;
+
+ for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_E(handle)); cpu++) {
+ addr = INTC_REG(d, _INTC_ADDR_E(handle), cpu);
+ intc_enable_fns[_INTC_MODE(handle)](addr, handle, intc_reg_fns\
+ [_INTC_FN(handle)], irq);
+ }
+}
+
+static void intc_enable(unsigned int irq)
+{
+ _intc_enable(irq, (unsigned long)get_irq_chip_data(irq));
+}
+
+static void intc_disable(unsigned int irq)
+{
+ struct intc_desc_int *d = get_intc_desc(irq);
+ unsigned long handle = (unsigned long) get_irq_chip_data(irq);
+ unsigned long addr;
+ unsigned int cpu;
+
+ for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_D(handle)); cpu++) {
+ addr = INTC_REG(d, _INTC_ADDR_D(handle), cpu);
+ intc_disable_fns[_INTC_MODE(handle)](addr, handle,intc_reg_fns\
+ [_INTC_FN(handle)], irq);
+ }
+}
+
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+static void intc_mask_ack(unsigned int irq)
+{
+ struct intc_desc_int *d = get_intc_desc(irq);
+ unsigned long handle = ack_handle[irq];
+ unsigned long addr;
+
+ intc_disable(irq);
+
+ /* read register and write zero only to the assocaited bit */
+
+ if (handle) {
+ addr = INTC_REG(d, _INTC_ADDR_D(handle), 0);
+ switch (_INTC_FN(handle)) {
+ case REG_FN_MODIFY_BASE + 0: /* 8bit */
+ __raw_readb(addr);
+ __raw_writeb(0xff ^ set_field(0, 1, handle), addr);
+ break;
+ case REG_FN_MODIFY_BASE + 1: /* 16bit */
+ __raw_readw(addr);
+ __raw_writew(0xffff ^ set_field(0, 1, handle), addr);
+ break;
+ case REG_FN_MODIFY_BASE + 3: /* 32bit */
+ __raw_readl(addr);
+ __raw_writel(0xffffffff ^ set_field(0, 1, handle), addr);
+ break;
+ default:
+ BUG();
+ break;
+ }
+ }
+}
+#endif
+
+static struct intc_handle_int *intc_find_irq(struct intc_handle_int *hp,
+ unsigned int nr_hp,
+ unsigned int irq)
+{
+ int i;
+
+ /* this doesn't scale well, but...
+ *
+ * this function should only be used for cerain uncommon
+ * operations such as intc_set_priority() and intc_set_sense()
+ * and in those rare cases performance doesn't matter that much.
+ * keeping the memory footprint low is more important.
+ *
+ * one rather simple way to speed this up and still keep the
+ * memory footprint down is to make sure the array is sorted
+ * and then perform a bisect to lookup the irq.
+ */
+
+ for (i = 0; i < nr_hp; i++) {
+ if ((hp + i)->irq != irq)
+ continue;
+
+ return hp + i;
+ }
+
+ return NULL;
+}
+
+int intc_set_priority(unsigned int irq, unsigned int prio)
+{
+ struct intc_desc_int *d = get_intc_desc(irq);
+ struct intc_handle_int *ihp;
+
+ if (!intc_prio_level[irq] || prio <= 1)
+ return -EINVAL;
+
+ ihp = intc_find_irq(d->prio, d->nr_prio, irq);
+ if (ihp) {
+ if (prio >= (1 << _INTC_WIDTH(ihp->handle)))
+ return -EINVAL;
+
+ intc_prio_level[irq] = prio;
+
+ /*
+ * only set secondary masking method directly
+ * primary masking method is using intc_prio_level[irq]
+ * priority level will be set during next enable()
+ */
+
+ if (_INTC_FN(ihp->handle) != REG_FN_ERR)
+ _intc_enable(irq, ihp->handle);
+ }
+ return 0;
+}
+
+#define VALID(x) (x | 0x80)
+
+static unsigned char intc_irq_sense_table[IRQ_TYPE_SENSE_MASK + 1] = {
+ [IRQ_TYPE_EDGE_FALLING] = VALID(0),
+ [IRQ_TYPE_EDGE_RISING] = VALID(1),
+ [IRQ_TYPE_LEVEL_LOW] = VALID(2),
+ /* SH7706, SH7707 and SH7709 do not support high level triggered */
+#if !defined(CONFIG_CPU_SUBTYPE_SH7706) && \
+ !defined(CONFIG_CPU_SUBTYPE_SH7707) && \
+ !defined(CONFIG_CPU_SUBTYPE_SH7709)
+ [IRQ_TYPE_LEVEL_HIGH] = VALID(3),
+#endif
+};
+
+static int intc_set_sense(unsigned int irq, unsigned int type)
+{
+ struct intc_desc_int *d = get_intc_desc(irq);
+ unsigned char value = intc_irq_sense_table[type & IRQ_TYPE_SENSE_MASK];
+ struct intc_handle_int *ihp;
+ unsigned long addr;
+
+ if (!value)
+ return -EINVAL;
+
+ ihp = intc_find_irq(d->sense, d->nr_sense, irq);
+ if (ihp) {
+ addr = INTC_REG(d, _INTC_ADDR_E(ihp->handle), 0);
+ intc_reg_fns[_INTC_FN(ihp->handle)](addr, ihp->handle, value);
+ }
+ return 0;
+}
+
+static unsigned int __init intc_get_reg(struct intc_desc_int *d,
+ unsigned long address)
+{
+ unsigned int k;
+
+ for (k = 0; k < d->nr_reg; k++) {
+ if (d->reg[k] == address)
+ return k;
+ }
+
+ BUG();
+ return 0;
+}
+
+static intc_enum __init intc_grp_id(struct intc_desc *desc,
+ intc_enum enum_id)
+{
+ struct intc_group *g = desc->groups;
+ unsigned int i, j;
+
+ for (i = 0; g && enum_id && i < desc->nr_groups; i++) {
+ g = desc->groups + i;
+
+ for (j = 0; g->enum_ids[j]; j++) {
+ if (g->enum_ids[j] != enum_id)
+ continue;
+
+ return g->enum_id;
+ }
+ }
+
+ return 0;
+}
+
+static unsigned int __init intc_mask_data(struct intc_desc *desc,
+ struct intc_desc_int *d,
+ intc_enum enum_id, int do_grps)
+{
+ struct intc_mask_reg *mr = desc->mask_regs;
+ unsigned int i, j, fn, mode;
+ unsigned long reg_e, reg_d;
+
+ for (i = 0; mr && enum_id && i < desc->nr_mask_regs; i++) {
+ mr = desc->mask_regs + i;
+
+ for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
+ if (mr->enum_ids[j] != enum_id)
+ continue;
+
+ if (mr->set_reg && mr->clr_reg) {
+ fn = REG_FN_WRITE_BASE;
+ mode = MODE_DUAL_REG;
+ reg_e = mr->clr_reg;
+ reg_d = mr->set_reg;
+ } else {
+ fn = REG_FN_MODIFY_BASE;
+ if (mr->set_reg) {
+ mode = MODE_ENABLE_REG;
+ reg_e = mr->set_reg;
+ reg_d = mr->set_reg;
+ } else {
+ mode = MODE_MASK_REG;
+ reg_e = mr->clr_reg;
+ reg_d = mr->clr_reg;
+ }
+ }
+
+ fn += (mr->reg_width >> 3) - 1;
+ return _INTC_MK(fn, mode,
+ intc_get_reg(d, reg_e),
+ intc_get_reg(d, reg_d),
+ 1,
+ (mr->reg_width - 1) - j);
+ }
+ }
+
+ if (do_grps)
+ return intc_mask_data(desc, d, intc_grp_id(desc, enum_id), 0);
+
+ return 0;
+}
+
+static unsigned int __init intc_prio_data(struct intc_desc *desc,
+ struct intc_desc_int *d,
+ intc_enum enum_id, int do_grps)
+{
+ struct intc_prio_reg *pr = desc->prio_regs;
+ unsigned int i, j, fn, mode, bit;
+ unsigned long reg_e, reg_d;
+
+ for (i = 0; pr && enum_id && i < desc->nr_prio_regs; i++) {
+ pr = desc->prio_regs + i;
+
+ for (j = 0; j < ARRAY_SIZE(pr->enum_ids); j++) {
+ if (pr->enum_ids[j] != enum_id)
+ continue;
+
+ if (pr->set_reg && pr->clr_reg) {
+ fn = REG_FN_WRITE_BASE;
+ mode = MODE_PCLR_REG;
+ reg_e = pr->set_reg;
+ reg_d = pr->clr_reg;
+ } else {
+ fn = REG_FN_MODIFY_BASE;
+ mode = MODE_PRIO_REG;
+ if (!pr->set_reg)
+ BUG();
+ reg_e = pr->set_reg;
+ reg_d = pr->set_reg;
+ }
+
+ fn += (pr->reg_width >> 3) - 1;
+
+ BUG_ON((j + 1) * pr->field_width > pr->reg_width);
+
+ bit = pr->reg_width - ((j + 1) * pr->field_width);
+
+ return _INTC_MK(fn, mode,
+ intc_get_reg(d, reg_e),
+ intc_get_reg(d, reg_d),
+ pr->field_width, bit);
+ }
+ }
+
+ if (do_grps)
+ return intc_prio_data(desc, d, intc_grp_id(desc, enum_id), 0);
+
+ return 0;
+}
+
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+static unsigned int __init intc_ack_data(struct intc_desc *desc,
+ struct intc_desc_int *d,
+ intc_enum enum_id)
+{
+ struct intc_mask_reg *mr = desc->ack_regs;
+ unsigned int i, j, fn, mode;
+ unsigned long reg_e, reg_d;
+
+ for (i = 0; mr && enum_id && i < desc->nr_ack_regs; i++) {
+ mr = desc->ack_regs + i;
+
+ for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
+ if (mr->enum_ids[j] != enum_id)
+ continue;
+
+ fn = REG_FN_MODIFY_BASE;
+ mode = MODE_ENABLE_REG;
+ reg_e = mr->set_reg;
+ reg_d = mr->set_reg;
+
+ fn += (mr->reg_width >> 3) - 1;
+ return _INTC_MK(fn, mode,
+ intc_get_reg(d, reg_e),
+ intc_get_reg(d, reg_d),
+ 1,
+ (mr->reg_width - 1) - j);
+ }
+ }
+
+ return 0;
+}
+#endif
+
+static unsigned int __init intc_sense_data(struct intc_desc *desc,
+ struct intc_desc_int *d,
+ intc_enum enum_id)
+{
+ struct intc_sense_reg *sr = desc->sense_regs;
+ unsigned int i, j, fn, bit;
+
+ for (i = 0; sr && enum_id && i < desc->nr_sense_regs; i++) {
+ sr = desc->sense_regs + i;
+
+ for (j = 0; j < ARRAY_SIZE(sr->enum_ids); j++) {
+ if (sr->enum_ids[j] != enum_id)
+ continue;
+
+ fn = REG_FN_MODIFY_BASE;
+ fn += (sr->reg_width >> 3) - 1;
+
+ BUG_ON((j + 1) * sr->field_width > sr->reg_width);
+
+ bit = sr->reg_width - ((j + 1) * sr->field_width);
+
+ return _INTC_MK(fn, 0, intc_get_reg(d, sr->reg),
+ 0, sr->field_width, bit);
+ }
+ }
+
+ return 0;
+}
+
+static void __init intc_register_irq(struct intc_desc *desc,
+ struct intc_desc_int *d,
+ intc_enum enum_id,
+ unsigned int irq)
+{
+ struct intc_handle_int *hp;
+ unsigned int data[2], primary;
+
+ /* Prefer single interrupt source bitmap over other combinations:
+ * 1. bitmap, single interrupt source
+ * 2. priority, single interrupt source
+ * 3. bitmap, multiple interrupt sources (groups)
+ * 4. priority, multiple interrupt sources (groups)
+ */
+
+ data[0] = intc_mask_data(desc, d, enum_id, 0);
+ data[1] = intc_prio_data(desc, d, enum_id, 0);
+
+ primary = 0;
+ if (!data[0] && data[1])
+ primary = 1;
+
+ data[0] = data[0] ? data[0] : intc_mask_data(desc, d, enum_id, 1);
+ data[1] = data[1] ? data[1] : intc_prio_data(desc, d, enum_id, 1);
+
+ if (!data[primary])
+ primary ^= 1;
+
+ BUG_ON(!data[primary]); /* must have primary masking method */
+
+ disable_irq_nosync(irq);
+ set_irq_chip_and_handler_name(irq, &d->chip,
+ handle_level_irq, "level");
+ set_irq_chip_data(irq, (void *)data[primary]);
+
+ /* set priority level
+ * - this needs to be at least 2 for 5-bit priorities on 7780
+ */
+ intc_prio_level[irq] = 2;
+
+ /* enable secondary masking method if present */
+ if (data[!primary])
+ _intc_enable(irq, data[!primary]);
+
+ /* add irq to d->prio list if priority is available */
+ if (data[1]) {
+ hp = d->prio + d->nr_prio;
+ hp->irq = irq;
+ hp->handle = data[1];
+
+ if (primary) {
+ /*
+ * only secondary priority should access registers, so
+ * set _INTC_FN(h) = REG_FN_ERR for intc_set_priority()
+ */
+
+ hp->handle &= ~_INTC_MK(0x0f, 0, 0, 0, 0, 0);
+ hp->handle |= _INTC_MK(REG_FN_ERR, 0, 0, 0, 0, 0);
+ }
+ d->nr_prio++;
+ }
+
+ /* add irq to d->sense list if sense is available */
+ data[0] = intc_sense_data(desc, d, enum_id);
+ if (data[0]) {
+ (d->sense + d->nr_sense)->irq = irq;
+ (d->sense + d->nr_sense)->handle = data[0];
+ d->nr_sense++;
+ }
+
+ /* irq should be disabled by default */
+ d->chip.mask(irq);
+
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+ if (desc->ack_regs)
+ ack_handle[irq] = intc_ack_data(desc, d, enum_id);
+#endif
+}
+
+static unsigned int __init save_reg(struct intc_desc_int *d,
+ unsigned int cnt,
+ unsigned long value,
+ unsigned int smp)
+{
+ if (value) {
+ d->reg[cnt] = value;
+#ifdef CONFIG_SMP
+ d->smp[cnt] = smp;
+#endif
+ return 1;
+ }
+
+ return 0;
+}
+
+
+void __init register_intc_controller(struct intc_desc *desc)
+{
+ unsigned int i, k, smp;
+ struct intc_desc_int *d;
+
+ d = alloc_bootmem(sizeof(*d));
+
+ d->nr_reg = desc->mask_regs ? desc->nr_mask_regs * 2 : 0;
+ d->nr_reg += desc->prio_regs ? desc->nr_prio_regs * 2 : 0;
+ d->nr_reg += desc->sense_regs ? desc->nr_sense_regs : 0;
+
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+ d->nr_reg += desc->ack_regs ? desc->nr_ack_regs : 0;
+#endif
+ d->reg = alloc_bootmem(d->nr_reg * sizeof(*d->reg));
+#ifdef CONFIG_SMP
+ d->smp = alloc_bootmem(d->nr_reg * sizeof(*d->smp));
+#endif
+ k = 0;
+
+ if (desc->mask_regs) {
+ for (i = 0; i < desc->nr_mask_regs; i++) {
+ smp = IS_SMP(desc->mask_regs[i]);
+ k += save_reg(d, k, desc->mask_regs[i].set_reg, smp);
+ k += save_reg(d, k, desc->mask_regs[i].clr_reg, smp);
+ }
+ }
+
+ if (desc->prio_regs) {
+ d->prio = alloc_bootmem(desc->nr_vectors * sizeof(*d->prio));
+
+ for (i = 0; i < desc->nr_prio_regs; i++) {
+ smp = IS_SMP(desc->prio_regs[i]);
+ k += save_reg(d, k, desc->prio_regs[i].set_reg, smp);
+ k += save_reg(d, k, desc->prio_regs[i].clr_reg, smp);
+ }
+ }
+
+ if (desc->sense_regs) {
+ d->sense = alloc_bootmem(desc->nr_vectors * sizeof(*d->sense));
+
+ for (i = 0; i < desc->nr_sense_regs; i++) {
+ k += save_reg(d, k, desc->sense_regs[i].reg, 0);
+ }
+ }
+
+ d->chip.name = desc->name;
+ d->chip.mask = intc_disable;
+ d->chip.unmask = intc_enable;
+ d->chip.mask_ack = intc_disable;
+ d->chip.set_type = intc_set_sense;
+
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+ if (desc->ack_regs) {
+ for (i = 0; i < desc->nr_ack_regs; i++)
+ k += save_reg(d, k, desc->ack_regs[i].set_reg, 0);
+
+ d->chip.mask_ack = intc_mask_ack;
+ }
+#endif
+
+ BUG_ON(k > 256); /* _INTC_ADDR_E() and _INTC_ADDR_D() are 8 bits */
+
+ for (i = 0; i < desc->nr_vectors; i++) {
+ struct intc_vect *vect = desc->vectors + i;
+
+ intc_register_irq(desc, d, vect->enum_id, evt2irq(vect->vect));
+ }
+}
--- /dev/null
+#ifndef __SH_INTC_H
+#define __SH_INTC_H
+
+typedef unsigned char intc_enum;
+
+struct intc_vect {
+ intc_enum enum_id;
+ unsigned short vect;
+};
+
+#define INTC_VECT(enum_id, vect) { enum_id, vect }
+#define INTC_IRQ(enum_id, irq) INTC_VECT(enum_id, irq2evt(irq))
+
+struct intc_group {
+ intc_enum enum_id;
+ intc_enum enum_ids[32];
+};
+
+#define INTC_GROUP(enum_id, ids...) { enum_id, { ids } }
+
+struct intc_mask_reg {
+ unsigned long set_reg, clr_reg, reg_width;
+ intc_enum enum_ids[32];
+#ifdef CONFIG_SMP
+ unsigned long smp;
+#endif
+};
+
+struct intc_prio_reg {
+ unsigned long set_reg, clr_reg, reg_width, field_width;
+ intc_enum enum_ids[16];
+#ifdef CONFIG_SMP
+ unsigned long smp;
+#endif
+};
+
+struct intc_sense_reg {
+ unsigned long reg, reg_width, field_width;
+ intc_enum enum_ids[16];
+};
+
+#ifdef CONFIG_SMP
+#define INTC_SMP(stride, nr) .smp = (stride) | ((nr) << 8)
+#else
+#define INTC_SMP(stride, nr)
+#endif
+
+struct intc_desc {
+ struct intc_vect *vectors;
+ unsigned int nr_vectors;
+ struct intc_group *groups;
+ unsigned int nr_groups;
+ struct intc_mask_reg *mask_regs;
+ unsigned int nr_mask_regs;
+ struct intc_prio_reg *prio_regs;
+ unsigned int nr_prio_regs;
+ struct intc_sense_reg *sense_regs;
+ unsigned int nr_sense_regs;
+ char *name;
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+ struct intc_mask_reg *ack_regs;
+ unsigned int nr_ack_regs;
+#endif
+};
+
+#define _INTC_ARRAY(a) a, sizeof(a)/sizeof(*a)
+#define DECLARE_INTC_DESC(symbol, chipname, vectors, groups, \
+ mask_regs, prio_regs, sense_regs) \
+struct intc_desc symbol __initdata = { \
+ _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \
+ _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \
+ _INTC_ARRAY(sense_regs), \
+ chipname, \
+}
+
+#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
+#define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups, \
+ mask_regs, prio_regs, sense_regs, ack_regs) \
+struct intc_desc symbol __initdata = { \
+ _INTC_ARRAY(vectors), _INTC_ARRAY(groups), \
+ _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \
+ _INTC_ARRAY(sense_regs), \
+ chipname, \
+ _INTC_ARRAY(ack_regs), \
+}
+#endif
+
+void __init register_intc_controller(struct intc_desc *desc);
+int intc_set_priority(unsigned int irq, unsigned int prio);
+
+#endif /* __SH_INTC_H */
projects / firefly-linux-kernel-4.4.55.git / commitdiff