1 files changed, 194 insertions, 72 deletions

diff --git a/drivers/sh/intc.c b/drivers/sh/intc.c
index d5d7f23c19a5..3a5a17db9474 100644
--- a/drivers/sh/intc.c
+++ b/drivers/sh/intc.c
@@ -259,6 +259,43 @@ static void intc_disable(unsigned int irq)
         }
 }
 
+static void (*intc_enable_noprio_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_field,
+        [MODE_PCLR_REG] = intc_mode_field,
+};
+
+static void intc_enable_disable(struct intc_desc_int *d,
+                                unsigned long handle, int do_enable)
+{
+        unsigned long addr;
+        unsigned int cpu;
+        void (*fn)(unsigned long, unsigned long,
+                   void (*)(unsigned long, unsigned long, unsigned long),
+                   unsigned int);
+
+        if (do_enable) {
+                for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_E(handle)); cpu++) {
+                        addr = INTC_REG(d, _INTC_ADDR_E(handle), cpu);
+                        fn = intc_enable_noprio_fns[_INTC_MODE(handle)];
+                        fn(addr, handle, intc_reg_fns[_INTC_FN(handle)], 0);
+                }
+        } else {
+                for (cpu = 0; cpu < SMP_NR(d, _INTC_ADDR_D(handle)); cpu++) {
+                        addr = INTC_REG(d, _INTC_ADDR_D(handle), cpu);
+                        fn = intc_disable_fns[_INTC_MODE(handle)];
+                        fn(addr, handle, intc_reg_fns[_INTC_FN(handle)], 0);
+                }
+        }
+}
+
 static int intc_set_wake(unsigned int irq, unsigned int on)
 {
         return 0; /* allow wakeup, but setup hardware in intc_suspend() */
@@ -400,11 +437,11 @@ static unsigned int __init intc_get_reg(struct intc_desc_int *d,
 static intc_enum __init intc_grp_id(struct intc_desc *desc,
                                     intc_enum enum_id)
 {
-        struct intc_group *g = desc->groups;
+        struct intc_group *g = desc->hw.groups;
         unsigned int i, j;
 
-        for (i = 0; g && enum_id && i < desc->nr_groups; i++) {
-                g = desc->groups + i;
+        for (i = 0; g && enum_id && i < desc->hw.nr_groups; i++) {
+                g = desc->hw.groups + i;
 
                 for (j = 0; g->enum_ids[j]; j++) {
                         if (g->enum_ids[j] != enum_id)
@@ -417,19 +454,21 @@ static intc_enum __init intc_grp_id(struct intc_desc *desc,
         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)
+static unsigned int __init _intc_mask_data(struct intc_desc *desc,
+                                           struct intc_desc_int *d,
+                                           intc_enum enum_id,
+                                           unsigned int *reg_idx,
+                                           unsigned int *fld_idx)
 {
-        struct intc_mask_reg *mr = desc->mask_regs;
-        unsigned int i, j, fn, mode;
+        struct intc_mask_reg *mr = desc->hw.mask_regs;
+        unsigned int 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;
+        while (mr && enum_id && *reg_idx < desc->hw.nr_mask_regs) {
+                mr = desc->hw.mask_regs + *reg_idx;
 
-                for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
-                        if (mr->enum_ids[j] != enum_id)
+                for (; *fld_idx < ARRAY_SIZE(mr->enum_ids); (*fld_idx)++) {
+                        if (mr->enum_ids[*fld_idx] != enum_id)
                                 continue;
 
                         if (mr->set_reg && mr->clr_reg) {
@@ -455,29 +494,49 @@ static unsigned int __init intc_mask_data(struct intc_desc *desc,
                                         intc_get_reg(d, reg_e),
                                         intc_get_reg(d, reg_d),
                                         1,
-                                        (mr->reg_width - 1) - j);
+                                        (mr->reg_width - 1) - *fld_idx);
                 }
+
+                *fld_idx = 0;
+                (*reg_idx)++;
         }
 
+        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)
+{
+        unsigned int i = 0;
+        unsigned int j = 0;
+        unsigned int ret;
+
+        ret = _intc_mask_data(desc, d, enum_id, &i, &j);
+        if (ret)
+                return ret;
+
         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)
+static unsigned int __init _intc_prio_data(struct intc_desc *desc,
+                                           struct intc_desc_int *d,
+                                           intc_enum enum_id,
+                                           unsigned int *reg_idx,
+                                           unsigned int *fld_idx)
 {
-        struct intc_prio_reg *pr = desc->prio_regs;
-        unsigned int i, j, fn, mode, bit;
+        struct intc_prio_reg *pr = desc->hw.prio_regs;
+        unsigned int fn, n, 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;
+        while (pr && enum_id && *reg_idx < desc->hw.nr_prio_regs) {
+                pr = desc->hw.prio_regs + *reg_idx;
 
-                for (j = 0; j < ARRAY_SIZE(pr->enum_ids); j++) {
-                        if (pr->enum_ids[j] != enum_id)
+                for (; *fld_idx < ARRAY_SIZE(pr->enum_ids); (*fld_idx)++) {
+                        if (pr->enum_ids[*fld_idx] != enum_id)
                                 continue;
 
                         if (pr->set_reg && pr->clr_reg) {
@@ -495,34 +554,79 @@ static unsigned int __init intc_prio_data(struct intc_desc *desc,
                         }
 
                         fn += (pr->reg_width >> 3) - 1;
+                        n = *fld_idx + 1;
 
-                        BUG_ON((j + 1) * pr->field_width > pr->reg_width);
+                        BUG_ON(n * pr->field_width > pr->reg_width);
 
-                        bit = pr->reg_width - ((j + 1) * pr->field_width);
+                        bit = pr->reg_width - (n * pr->field_width);
 
                         return _INTC_MK(fn, mode,
                                         intc_get_reg(d, reg_e),
                                         intc_get_reg(d, reg_d),
                                         pr->field_width, bit);
                 }
+
+                *fld_idx = 0;
+                (*reg_idx)++;
         }
 
+        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)
+{
+        unsigned int i = 0;
+        unsigned int j = 0;
+        unsigned int ret;
+
+        ret = _intc_prio_data(desc, d, enum_id, &i, &j);
+        if (ret)
+                return ret;
+
         if (do_grps)
                 return intc_prio_data(desc, d, intc_grp_id(desc, enum_id), 0);
 
         return 0;
 }
 
+static void __init intc_enable_disable_enum(struct intc_desc *desc,
+                                            struct intc_desc_int *d,
+                                            intc_enum enum_id, int enable)
+{
+        unsigned int i, j, data;
+
+        /* go through and enable/disable all mask bits */
+        i = j = 0;
+        do {
+                data = _intc_mask_data(desc, d, enum_id, &i, &j);
+                if (data)
+                        intc_enable_disable(d, data, enable);
+                j++;
+        } while (data);
+
+        /* go through and enable/disable all priority fields */
+        i = j = 0;
+        do {
+                data = _intc_prio_data(desc, d, enum_id, &i, &j);
+                if (data)
+                        intc_enable_disable(d, data, enable);
+
+                j++;
+        } while (data);
+}
+
 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;
+        struct intc_mask_reg *mr = desc->hw.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 (i = 0; mr && enum_id && i < desc->hw.nr_ack_regs; i++) {
+                mr = desc->hw.ack_regs + i;
 
                 for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
                         if (mr->enum_ids[j] != enum_id)
@@ -549,11 +653,11 @@ 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;
+        struct intc_sense_reg *sr = desc->hw.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 (i = 0; sr && enum_id && i < desc->hw.nr_sense_regs; i++) {
+                sr = desc->hw.sense_regs + i;
 
                 for (j = 0; j < ARRAY_SIZE(sr->enum_ids); j++) {
                         if (sr->enum_ids[j] != enum_id)
@@ -656,7 +760,7 @@ static void __init intc_register_irq(struct intc_desc *desc,
         /* irq should be disabled by default */
         d->chip.mask(irq);
 
-        if (desc->ack_regs)
+        if (desc->hw.ack_regs)
                 ack_handle[irq] = intc_ack_data(desc, d, enum_id);
 }
 
@@ -684,6 +788,7 @@ static void intc_redirect_irq(unsigned int irq, struct irq_desc *desc)
 void __init register_intc_controller(struct intc_desc *desc)
 {
         unsigned int i, k, smp;
+        struct intc_hw_desc *hw = &desc->hw;
         struct intc_desc_int *d;
 
         d = kzalloc(sizeof(*d), GFP_NOWAIT);
@@ -691,10 +796,10 @@ void __init register_intc_controller(struct intc_desc *desc)
         INIT_LIST_HEAD(&d->list);
         list_add(&d->list, &intc_list);
 
-        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->nr_reg += desc->ack_regs ? desc->nr_ack_regs : 0;
+        d->nr_reg = hw->mask_regs ? hw->nr_mask_regs * 2 : 0;
+        d->nr_reg += hw->prio_regs ? hw->nr_prio_regs * 2 : 0;
+        d->nr_reg += hw->sense_regs ? hw->nr_sense_regs : 0;
+        d->nr_reg += hw->ack_regs ? hw->nr_ack_regs : 0;
 
         d->reg = kzalloc(d->nr_reg * sizeof(*d->reg), GFP_NOWAIT);
 #ifdef CONFIG_SMP
@@ -702,30 +807,31 @@ void __init register_intc_controller(struct intc_desc *desc)
 #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 (hw->mask_regs) {
+                for (i = 0; i < hw->nr_mask_regs; i++) {
+                        smp = IS_SMP(hw->mask_regs[i]);
+                        k += save_reg(d, k, hw->mask_regs[i].set_reg, smp);
+                        k += save_reg(d, k, hw->mask_regs[i].clr_reg, smp);
                 }
         }
 
-        if (desc->prio_regs) {
-                d->prio = kzalloc(desc->nr_vectors * sizeof(*d->prio), GFP_NOWAIT);
+        if (hw->prio_regs) {
+                d->prio = kzalloc(hw->nr_vectors * sizeof(*d->prio),
+                                  GFP_NOWAIT);
 
-                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);
+                for (i = 0; i < hw->nr_prio_regs; i++) {
+                        smp = IS_SMP(hw->prio_regs[i]);
+                        k += save_reg(d, k, hw->prio_regs[i].set_reg, smp);
+                        k += save_reg(d, k, hw->prio_regs[i].clr_reg, smp);
                 }
         }
 
-        if (desc->sense_regs) {
-                d->sense = kzalloc(desc->nr_vectors * sizeof(*d->sense), GFP_NOWAIT);
+        if (hw->sense_regs) {
+                d->sense = kzalloc(hw->nr_vectors * sizeof(*d->sense),
+                                   GFP_NOWAIT);
 
-                for (i = 0; i < desc->nr_sense_regs; i++) {
-                        k += save_reg(d, k, desc->sense_regs[i].reg, 0);
-                }
+                for (i = 0; i < hw->nr_sense_regs; i++)
+                        k += save_reg(d, k, hw->sense_regs[i].reg, 0);
         }
 
         d->chip.name = desc->name;
@@ -738,18 +844,26 @@ void __init register_intc_controller(struct intc_desc *desc)
         d->chip.set_type = intc_set_sense;
         d->chip.set_wake = intc_set_wake;
 
-        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);
+        if (hw->ack_regs) {
+                for (i = 0; i < hw->nr_ack_regs; i++)
+                        k += save_reg(d, k, hw->ack_regs[i].set_reg, 0);
 
                 d->chip.mask_ack = intc_mask_ack;
         }
 
+        /* disable bits matching force_disable before registering irqs */
+        if (desc->force_disable)
+                intc_enable_disable_enum(desc, d, desc->force_disable, 0);
+
+        /* disable bits matching force_enable before registering irqs */
+        if (desc->force_enable)
+                intc_enable_disable_enum(desc, d, desc->force_enable, 0);
+
         BUG_ON(k > 256); /* _INTC_ADDR_E() and _INTC_ADDR_D() are 8 bits */
 
         /* register the vectors one by one */
-        for (i = 0; i < desc->nr_vectors; i++) {
-                struct intc_vect *vect = desc->vectors + i;
+        for (i = 0; i < hw->nr_vectors; i++) {
+                struct intc_vect *vect = hw->vectors + i;
                 unsigned int irq = evt2irq(vect->vect);
                 struct irq_desc *irq_desc;
 
@@ -764,8 +878,8 @@ void __init register_intc_controller(struct intc_desc *desc)
 
                 intc_register_irq(desc, d, vect->enum_id, irq);
 
-                for (k = i + 1; k < desc->nr_vectors; k++) {
-                        struct intc_vect *vect2 = desc->vectors + k;
+                for (k = i + 1; k < hw->nr_vectors; k++) {
+                        struct intc_vect *vect2 = hw->vectors + k;
                         unsigned int irq2 = evt2irq(vect2->vect);
 
                         if (vect->enum_id != vect2->enum_id)
@@ -785,11 +899,15 @@ void __init register_intc_controller(struct intc_desc *desc)
                         vect2->enum_id = 0;
 
                         /* redirect this interrupts to the first one */
-                        set_irq_chip_and_handler_name(irq2, &d->chip,
-                                        intc_redirect_irq, "redirect");
+                        set_irq_chip(irq2, &dummy_irq_chip);
+                        set_irq_chained_handler(irq2, intc_redirect_irq);
                         set_irq_data(irq2, (void *)irq);
                 }
         }
+
+        /* enable bits matching force_enable after registering irqs */
+        if (desc->force_enable)
+                intc_enable_disable_enum(desc, d, desc->force_enable, 1);
 }
 
 static int intc_suspend(struct sys_device *dev, pm_message_t state)
@@ -872,7 +990,7 @@ device_initcall(register_intc_sysdevs);
 /*
  * Dynamic IRQ allocation and deallocation
  */
-static unsigned int create_irq_on_node(unsigned int irq_want, int node)
+unsigned int create_irq_nr(unsigned int irq_want, int node)
 {
         unsigned int irq = 0, new;
         unsigned long flags;
@@ -881,24 +999,28 @@ static unsigned int create_irq_on_node(unsigned int irq_want, int node)
         spin_lock_irqsave(&vector_lock, flags);
 
         /*
-         * First try the wanted IRQ, then scan.
+         * First try the wanted IRQ
          */
-        if (test_and_set_bit(irq_want, intc_irq_map)) {
+        if (test_and_set_bit(irq_want, intc_irq_map) == 0) {
+                new = irq_want;
+        } else {
+                /* .. then fall back to scanning. */
                 new = find_first_zero_bit(intc_irq_map, nr_irqs);
                 if (unlikely(new == nr_irqs))
                         goto out_unlock;
 
-                desc = irq_to_desc_alloc_node(new, node);
-                if (unlikely(!desc)) {
-                        pr_info("can't get irq_desc for %d\n", new);
-                        goto out_unlock;
-                }
-
-                desc = move_irq_desc(desc, node);
                 __set_bit(new, intc_irq_map);
-                irq = new;
         }
 
+        desc = irq_to_desc_alloc_node(new, node);
+        if (unlikely(!desc)) {
+                pr_info("can't get irq_desc for %d\n", new);
+                goto out_unlock;
+        }
+
+        desc = move_irq_desc(desc, node);
+        irq = new;
+
 out_unlock:
         spin_unlock_irqrestore(&vector_lock, flags);
 
@@ -913,7 +1035,7 @@ int create_irq(void)
         int nid = cpu_to_node(smp_processor_id());
         int irq;
 
-        irq = create_irq_on_node(NR_IRQS_LEGACY, nid);
+        irq = create_irq_nr(NR_IRQS_LEGACY, nid);
         if (irq == 0)
                 irq = -1;