sh: intc - rework core code
This patch reworks the intc core, implementing the following features:
- Support dual priority registers - one set and one clear register
- All 8/16/32 bit register combinations are now supported
- Both single mask and single enable bitmap register are supported
- Add code to set interrupt priority
- Speedup sense and priority configuration code
- Allocate data using bootmem, allows intc data structures to be
__initdata
- Save memory - allocated memory footprint is smaller than intc
structures
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/cpu/irq/intc.c b/arch/sh/kernel/cpu/irq/intc.c
index 24a8d55..d609a8c 100644
--- a/arch/sh/kernel/cpu/irq/intc.c
+++ b/arch/sh/kernel/cpu/irq/intc.c
@@ -20,176 +20,227 @@
#include <linux/module.h>
#include <linux/io.h>
#include <linux/interrupt.h>
+#include <linux/bootmem.h>
-#define _INTC_MK(fn, idx, bit, value) \
- ((fn) << 24 | ((value) << 16) | ((idx) << 8) | (bit))
-#define _INTC_FN(h) (h >> 24)
-#define _INTC_VALUE(h) ((h >> 16) & 0xff)
-#define _INTC_IDX(h) ((h >> 8) & 0xff)
-#define _INTC_BIT(h) (h & 0xff)
+#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_PTR(desc, member, data) \
- (desc->member + _INTC_IDX(data))
+#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)
-static inline struct intc_desc *get_intc_desc(unsigned int irq)
+struct intc_handle_int {
+ unsigned int irq;
+ unsigned long handle;
+};
+
+struct intc_desc_int {
+ unsigned long *reg;
+ 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;
+};
+
+static unsigned int intc_prio_level[NR_IRQS]; /* for now */
+
+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, chip));
+ 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 width,
- unsigned int shift)
+ 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 inline unsigned int set_prio_field(struct intc_desc *desc,
- unsigned int value,
- unsigned int priority,
- unsigned int data)
+static void write_8(unsigned long addr, unsigned long h, unsigned long data)
{
- unsigned int width = _INTC_PTR(desc, prio_regs, data)->field_width;
-
- return set_field(value, priority, width, _INTC_BIT(data));
+ ctrl_outb(set_field(0, data, h), addr);
}
-static void disable_prio_16(struct intc_desc *desc, unsigned int data)
+static void write_16(unsigned long addr, unsigned long h, unsigned long data)
{
- unsigned long addr = _INTC_PTR(desc, prio_regs, data)->set_reg;
-
- ctrl_outw(set_prio_field(desc, ctrl_inw(addr), 0, data), addr);
+ ctrl_outw(set_field(0, data, h), addr);
}
-static void enable_prio_16(struct intc_desc *desc, unsigned int data)
+static void write_32(unsigned long addr, unsigned long h, unsigned long data)
{
- unsigned long addr = _INTC_PTR(desc, prio_regs, data)->set_reg;
- unsigned int prio = _INTC_VALUE(data);
-
- ctrl_outw(set_prio_field(desc, ctrl_inw(addr), prio, data), addr);
+ ctrl_outl(set_field(0, data, h), addr);
}
-static void disable_prio_32(struct intc_desc *desc, unsigned int data)
+static void modify_8(unsigned long addr, unsigned long h, unsigned long data)
{
- unsigned long addr = _INTC_PTR(desc, prio_regs, data)->set_reg;
-
- ctrl_outl(set_prio_field(desc, ctrl_inl(addr), 0, data), addr);
+ ctrl_outb(set_field(ctrl_inb(addr), data, h), addr);
}
-static void enable_prio_32(struct intc_desc *desc, unsigned int data)
+static void modify_16(unsigned long addr, unsigned long h, unsigned long data)
{
- unsigned long addr = _INTC_PTR(desc, prio_regs, data)->set_reg;
- unsigned int prio = _INTC_VALUE(data);
-
- ctrl_outl(set_prio_field(desc, ctrl_inl(addr), prio, data), addr);
+ ctrl_outw(set_field(ctrl_inw(addr), data, h), addr);
}
-static void write_set_reg_8(struct intc_desc *desc, unsigned int data)
+static void modify_32(unsigned long addr, unsigned long h, unsigned long data)
{
- ctrl_outb(1 << _INTC_BIT(data),
- _INTC_PTR(desc, mask_regs, data)->set_reg);
+ ctrl_outl(set_field(ctrl_inl(addr), data, h), addr);
}
-static void write_clr_reg_8(struct intc_desc *desc, unsigned int data)
-{
- ctrl_outb(1 << _INTC_BIT(data),
- _INTC_PTR(desc, mask_regs, data)->clr_reg);
-}
+enum { REG_FN_ERR = 0, REG_FN_WRITE_BASE = 1, REG_FN_MODIFY_BASE = 5 };
-static void write_set_reg_32(struct intc_desc *desc, unsigned int data)
-{
- ctrl_outl(1 << _INTC_BIT(data),
- _INTC_PTR(desc, mask_regs, data)->set_reg);
-}
-
-static void write_clr_reg_32(struct intc_desc *desc, unsigned int data)
-{
- ctrl_outl(1 << _INTC_BIT(data),
- _INTC_PTR(desc, mask_regs, data)->clr_reg);
-}
-
-static void or_set_reg_16(struct intc_desc *desc, unsigned int data)
-{
- unsigned long addr = _INTC_PTR(desc, mask_regs, data)->set_reg;
-
- ctrl_outw(ctrl_inw(addr) | 1 << _INTC_BIT(data), addr);
-}
-
-static void and_set_reg_16(struct intc_desc *desc, unsigned int data)
-{
- unsigned long addr = _INTC_PTR(desc, mask_regs, data)->set_reg;
-
- ctrl_outw(ctrl_inw(addr) & ~(1 << _INTC_BIT(data)), addr);
-}
-
-static void or_set_reg_32(struct intc_desc *desc, unsigned int data)
-{
- unsigned long addr = _INTC_PTR(desc, mask_regs, data)->set_reg;
-
- ctrl_outl(ctrl_inl(addr) | 1 << _INTC_BIT(data), addr);
-}
-
-static void and_set_reg_32(struct intc_desc *desc, unsigned int data)
-{
- unsigned long addr = _INTC_PTR(desc, mask_regs, data)->set_reg;
-
- ctrl_outl(ctrl_inl(addr) & ~(1 << _INTC_BIT(data)), addr);
-}
-
-enum { REG_FN_ERROR=0,
- REG_FN_DUAL_8, REG_FN_DUAL_32,
- REG_FN_ENA_16, REG_FN_ENA_32,
- REG_FN_PRIO_16, REG_FN_PRIO_32 };
-
-static struct {
- void (*enable)(struct intc_desc *, unsigned int);
- void (*disable)(struct intc_desc *, unsigned int);
-} intc_reg_fns[] = {
- [REG_FN_DUAL_8] = { write_clr_reg_8, write_set_reg_8 },
- [REG_FN_DUAL_32] = { write_clr_reg_32, write_set_reg_32 },
- [REG_FN_ENA_16] = { or_set_reg_16, and_set_reg_16 },
- [REG_FN_ENA_32] = { or_set_reg_32, and_set_reg_32 },
- [REG_FN_PRIO_16] = { enable_prio_16, disable_prio_16 },
- [REG_FN_PRIO_32] = { enable_prio_32, disable_prio_32 },
+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 = d->reg[_INTC_ADDR_E(handle)];
+
+ intc_enable_fns[_INTC_MODE(handle)](addr, handle,
+ intc_reg_fns[_INTC_FN(handle)],
+ irq);
+}
+
static void intc_enable(unsigned int irq)
{
- struct intc_desc *desc = get_intc_desc(irq);
- unsigned int data = (unsigned int) get_irq_chip_data(irq);
-
- intc_reg_fns[_INTC_FN(data)].enable(desc, data);
+ _intc_enable(irq, (unsigned long)get_irq_chip_data(irq));
}
static void intc_disable(unsigned int irq)
{
- struct intc_desc *desc = get_intc_desc(irq);
- unsigned int data = (unsigned int) get_irq_chip_data(irq);
+ struct intc_desc_int *desc = get_intc_desc(irq);
+ unsigned long handle = (unsigned long) get_irq_chip_data(irq);
+ unsigned long addr = desc->reg[_INTC_ADDR_D(handle)];
- intc_reg_fns[_INTC_FN(data)].disable(desc, data);
+ intc_disable_fns[_INTC_MODE(handle)](addr, handle,
+ intc_reg_fns[_INTC_FN(handle)],
+ irq);
}
-static void set_sense_16(struct intc_desc *desc, unsigned int data)
+static struct intc_handle_int *intc_find_irq(struct intc_handle_int *hp,
+ unsigned int nr_hp,
+ unsigned int irq)
{
- unsigned long addr = _INTC_PTR(desc, sense_regs, data)->reg;
- unsigned int width = _INTC_PTR(desc, sense_regs, data)->field_width;
- unsigned int bit = _INTC_BIT(data);
- unsigned int value = _INTC_VALUE(data);
+ int i;
- ctrl_outw(set_field(ctrl_inw(addr), value, width, bit), addr);
+ for (i = 0; i < nr_hp; i++) {
+ if ((hp + i)->irq != irq)
+ continue;
+
+ return hp + i;
+ }
+
+ return NULL;
}
-static void set_sense_32(struct intc_desc *desc, unsigned int data)
+int intc_set_priority(unsigned int irq, unsigned int prio)
{
- unsigned long addr = _INTC_PTR(desc, sense_regs, data)->reg;
- unsigned int width = _INTC_PTR(desc, sense_regs, data)->field_width;
- unsigned int bit = _INTC_BIT(data);
- unsigned int value = _INTC_VALUE(data);
+ struct intc_desc_int *d = get_intc_desc(irq);
+ struct intc_handle_int *ihp;
- ctrl_outl(set_field(ctrl_inl(addr), value, width, bit), addr);
+ 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)) - 1))
+ 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 (ihp->handle)
+ _intc_enable(irq, ihp->handle);
+ }
+ return 0;
}
#define VALID(x) (x | 0x80)
@@ -203,92 +254,38 @@
static int intc_set_sense(unsigned int irq, unsigned int type)
{
- struct intc_desc *desc = get_intc_desc(irq);
+ struct intc_desc_int *d = get_intc_desc(irq);
unsigned char value = intc_irq_sense_table[type & IRQ_TYPE_SENSE_MASK];
- unsigned int i, j, data, bit;
- intc_enum enum_id = 0;
+ struct intc_handle_int *ihp;
+ unsigned long addr;
- for (i = 0; i < desc->nr_vectors; i++) {
- struct intc_vect *vect = desc->vectors + i;
-
- if (evt2irq(vect->vect) != irq)
- continue;
-
- enum_id = vect->enum_id;
- break;
- }
-
- if (!enum_id || !value || !desc->sense_regs)
+ if (!value)
return -EINVAL;
- value ^= VALID(0);
-
- for (i = 0; i < desc->nr_sense_regs; i++) {
- struct intc_sense_reg *sr = desc->sense_regs + i;
-
- for (j = 0; j < ARRAY_SIZE(sr->enum_ids); j++) {
- if (sr->enum_ids[j] != enum_id)
- continue;
-
- bit = sr->reg_width - ((j + 1) * sr->field_width);
- data = _INTC_MK(0, i, bit, value);
-
- switch(sr->reg_width) {
- case 16:
- set_sense_16(desc, data);
- break;
- case 32:
- set_sense_32(desc, data);
- break;
- }
-
- return 0;
- }
+ ihp = intc_find_irq(d->sense, d->nr_sense, irq);
+ if (ihp) {
+ addr = d->reg[_INTC_ADDR_E(ihp->handle)];
+ intc_reg_fns[_INTC_FN(ihp->handle)](addr, ihp->handle, value);
}
-
- return -EINVAL;
+ return 0;
}
-static unsigned int __init intc_find_dual_handler(unsigned int width)
+static unsigned int __init intc_get_reg(struct intc_desc_int *d,
+ unsigned long address)
{
- switch (width) {
- case 8:
- return REG_FN_DUAL_8;
- case 32:
- return REG_FN_DUAL_32;
+ unsigned int k;
+
+ for (k = 0; k < d->nr_reg; k++) {
+ if (d->reg[k] == address)
+ return k;
}
BUG();
- return REG_FN_ERROR;
+ return 0;
}
-static unsigned int __init intc_find_prio_handler(unsigned int width)
-{
- switch (width) {
- case 16:
- return REG_FN_PRIO_16;
- case 32:
- return REG_FN_PRIO_32;
- }
-
- BUG();
- return REG_FN_ERROR;
-}
-
-static unsigned int __init intc_find_ena_handler(unsigned int width)
-{
- switch (width) {
- case 16:
- return REG_FN_ENA_16;
- case 32:
- return REG_FN_ENA_32;
- }
-
- BUG();
- return REG_FN_ERROR;
-}
-
-static intc_enum __init intc_grp_id(struct intc_desc *desc, intc_enum enum_id)
+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;
@@ -333,10 +330,12 @@
}
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;
+ 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;
@@ -345,32 +344,46 @@
if (mr->enum_ids[j] != enum_id)
continue;
- switch (mr->clr_reg) {
- case 1: /* 1 = enabled interrupt - "enable" register */
- fn = intc_find_ena_handler(mr->reg_width);
- break;
- default:
- fn = intc_find_dual_handler(mr->reg_width);
+ 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;
+ }
}
- if (fn == REG_FN_ERROR)
- return 0;
-
- return _INTC_MK(fn, i, (mr->reg_width - 1) - j, 0);
+ 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, intc_grp_id(desc, enum_id), 0);
+ 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, bit, prio;
+ 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;
@@ -379,26 +392,69 @@
if (pr->enum_ids[j] != enum_id)
continue;
- fn = intc_find_prio_handler(pr->reg_width);
- if (fn == REG_FN_ERROR)
- return 0;
+ 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;
+ }
- prio = intc_prio_value(desc, enum_id, 1);
+ fn += (pr->reg_width >> 3) - 1;
bit = pr->reg_width - ((j + 1) * pr->field_width);
BUG_ON(bit < 0);
- return _INTC_MK(fn, i, bit, prio);
+ 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, intc_grp_id(desc, enum_id), 0);
+ return intc_prio_data(desc, d, intc_grp_id(desc, enum_id), 0);
return 0;
}
-static void __init intc_register_irq(struct intc_desc *desc, intc_enum enum_id,
+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;
+ bit = sr->reg_width - ((j + 1) * sr->field_width);
+
+ BUG_ON(bit < 0);
+
+ 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)
{
unsigned int data[2], primary;
@@ -410,15 +466,15 @@
* 4. priority, multiple interrupt sources (groups)
*/
- data[0] = intc_mask_data(desc, enum_id, 0);
- data[1] = intc_prio_data(desc, enum_id, 0);
+ 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, enum_id, 1);
- data[1] = data[1] ? data[1] : intc_prio_data(desc, enum_id, 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;
@@ -426,31 +482,91 @@
BUG_ON(!data[primary]); /* must have primary masking method */
disable_irq_nosync(irq);
- set_irq_chip_and_handler_name(irq, &desc->chip,
+ set_irq_chip_and_handler_name(irq, &d->chip,
handle_level_irq, "level");
set_irq_chip_data(irq, (void *)data[primary]);
+ /* record the desired priority level */
+ intc_prio_level[irq] = intc_prio_value(desc, enum_id, 1);
+
/* enable secondary masking method if present */
if (data[!primary])
- intc_reg_fns[_INTC_FN(data[!primary])].enable(desc,
- data[!primary]);
+ _intc_enable(irq, data[!primary]);
+
+ /* add irq to d->prio list if priority is available */
+ if (data[1]) {
+ (d->prio + d->nr_prio)->irq = irq;
+ if (!primary) /* only secondary priority can access regs */
+ (d->prio + d->nr_prio)->handle = data[1];
+ 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 */
- desc->chip.mask(irq);
+ d->chip.mask(irq);
}
void __init register_intc_controller(struct intc_desc *desc)
{
- unsigned int i;
+ unsigned int i, k;
+ struct intc_desc_int *d;
- desc->chip.mask = intc_disable;
- desc->chip.unmask = intc_enable;
- desc->chip.mask_ack = intc_disable;
- desc->chip.set_type = intc_set_sense;
+ 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;
+
+ d->reg = alloc_bootmem(d->nr_reg * sizeof(*d->reg));
+ k = 0;
+
+ if (desc->mask_regs) {
+ for (i = 0; i < desc->nr_mask_regs; i++) {
+ if (desc->mask_regs[i].set_reg)
+ d->reg[k++] = desc->mask_regs[i].set_reg;
+ if (desc->mask_regs[i].clr_reg)
+ d->reg[k++] = desc->mask_regs[i].clr_reg;
+ }
+ }
+
+ if (desc->prio_regs) {
+ d->prio = alloc_bootmem(desc->nr_vectors * sizeof(*d->prio));
+
+ for (i = 0; i < desc->nr_prio_regs; i++) {
+ if (desc->prio_regs[i].set_reg)
+ d->reg[k++] = desc->prio_regs[i].set_reg;
+ if (desc->prio_regs[i].clr_reg)
+ d->reg[k++] = desc->prio_regs[i].clr_reg;
+ }
+ }
+
+ if (desc->sense_regs) {
+ d->sense = alloc_bootmem(desc->nr_vectors * sizeof(*d->sense));
+
+ for (i = 0; i < desc->nr_sense_regs; i++) {
+ if (desc->sense_regs[i].reg)
+ d->reg[k++] = desc->sense_regs[i].reg;
+ }
+ }
+
+ BUG_ON(k > 256); /* _INTC_ADDR_E() and _INTC_ADDR_D() are 8 bits */
+
+ 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;
for (i = 0; i < desc->nr_vectors; i++) {
struct intc_vect *vect = desc->vectors + i;
- intc_register_irq(desc, vect->enum_id, evt2irq(vect->vect));
+ intc_register_irq(desc, d, vect->enum_id, evt2irq(vect->vect));
}
}