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-rw-r--r--qemu/hw/intc/sh_intc.c515
1 files changed, 0 insertions, 515 deletions
diff --git a/qemu/hw/intc/sh_intc.c b/qemu/hw/intc/sh_intc.c
deleted file mode 100644
index 6ce2a8084..000000000
--- a/qemu/hw/intc/sh_intc.c
+++ /dev/null
@@ -1,515 +0,0 @@
-/*
- * SuperH interrupt controller module
- *
- * Copyright (c) 2007 Magnus Damm
- * Based on sh_timer.c and arm_timer.c by Paul Brook
- * Copyright (c) 2005-2006 CodeSourcery.
- *
- * This code is licensed under the GPL.
- */
-
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "cpu.h"
-#include "hw/sh4/sh_intc.h"
-#include "hw/hw.h"
-#include "hw/sh4/sh.h"
-
-//#define DEBUG_INTC
-//#define DEBUG_INTC_SOURCES
-
-#define INTC_A7(x) ((x) & 0x1fffffff)
-
-void sh_intc_toggle_source(struct intc_source *source,
- int enable_adj, int assert_adj)
-{
- int enable_changed = 0;
- int pending_changed = 0;
- int old_pending;
-
- if ((source->enable_count == source->enable_max) && (enable_adj == -1))
- enable_changed = -1;
-
- source->enable_count += enable_adj;
-
- if (source->enable_count == source->enable_max)
- enable_changed = 1;
-
- source->asserted += assert_adj;
-
- old_pending = source->pending;
- source->pending = source->asserted &&
- (source->enable_count == source->enable_max);
-
- if (old_pending != source->pending)
- pending_changed = 1;
-
- if (pending_changed) {
- if (source->pending) {
- source->parent->pending++;
- if (source->parent->pending == 1) {
- cpu_interrupt(first_cpu, CPU_INTERRUPT_HARD);
- }
- } else {
- source->parent->pending--;
- if (source->parent->pending == 0) {
- cpu_reset_interrupt(first_cpu, CPU_INTERRUPT_HARD);
- }
- }
- }
-
- if (enable_changed || assert_adj || pending_changed) {
-#ifdef DEBUG_INTC_SOURCES
- printf("sh_intc: (%d/%d/%d/%d) interrupt source 0x%x %s%s%s\n",
- source->parent->pending,
- source->asserted,
- source->enable_count,
- source->enable_max,
- source->vect,
- source->asserted ? "asserted " :
- assert_adj ? "deasserted" : "",
- enable_changed == 1 ? "enabled " :
- enable_changed == -1 ? "disabled " : "",
- source->pending ? "pending" : "");
-#endif
- }
-}
-
-static void sh_intc_set_irq (void *opaque, int n, int level)
-{
- struct intc_desc *desc = opaque;
- struct intc_source *source = &(desc->sources[n]);
-
- if (level && !source->asserted)
- sh_intc_toggle_source(source, 0, 1);
- else if (!level && source->asserted)
- sh_intc_toggle_source(source, 0, -1);
-}
-
-int sh_intc_get_pending_vector(struct intc_desc *desc, int imask)
-{
- unsigned int i;
-
- /* slow: use a linked lists of pending sources instead */
- /* wrong: take interrupt priority into account (one list per priority) */
-
- if (imask == 0x0f) {
- return -1; /* FIXME, update code to include priority per source */
- }
-
- for (i = 0; i < desc->nr_sources; i++) {
- struct intc_source *source = desc->sources + i;
-
- if (source->pending) {
-#ifdef DEBUG_INTC_SOURCES
- printf("sh_intc: (%d) returning interrupt source 0x%x\n",
- desc->pending, source->vect);
-#endif
- return source->vect;
- }
- }
-
- abort();
-}
-
-#define INTC_MODE_NONE 0
-#define INTC_MODE_DUAL_SET 1
-#define INTC_MODE_DUAL_CLR 2
-#define INTC_MODE_ENABLE_REG 3
-#define INTC_MODE_MASK_REG 4
-#define INTC_MODE_IS_PRIO 8
-
-static unsigned int sh_intc_mode(unsigned long address,
- unsigned long set_reg, unsigned long clr_reg)
-{
- if ((address != INTC_A7(set_reg)) &&
- (address != INTC_A7(clr_reg)))
- return INTC_MODE_NONE;
-
- if (set_reg && clr_reg) {
- if (address == INTC_A7(set_reg))
- return INTC_MODE_DUAL_SET;
- else
- return INTC_MODE_DUAL_CLR;
- }
-
- if (set_reg)
- return INTC_MODE_ENABLE_REG;
- else
- return INTC_MODE_MASK_REG;
-}
-
-static void sh_intc_locate(struct intc_desc *desc,
- unsigned long address,
- unsigned long **datap,
- intc_enum **enums,
- unsigned int *first,
- unsigned int *width,
- unsigned int *modep)
-{
- unsigned int i, mode;
-
- /* this is slow but works for now */
-
- if (desc->mask_regs) {
- for (i = 0; i < desc->nr_mask_regs; i++) {
- struct intc_mask_reg *mr = desc->mask_regs + i;
-
- mode = sh_intc_mode(address, mr->set_reg, mr->clr_reg);
- if (mode == INTC_MODE_NONE)
- continue;
-
- *modep = mode;
- *datap = &mr->value;
- *enums = mr->enum_ids;
- *first = mr->reg_width - 1;
- *width = 1;
- return;
- }
- }
-
- if (desc->prio_regs) {
- for (i = 0; i < desc->nr_prio_regs; i++) {
- struct intc_prio_reg *pr = desc->prio_regs + i;
-
- mode = sh_intc_mode(address, pr->set_reg, pr->clr_reg);
- if (mode == INTC_MODE_NONE)
- continue;
-
- *modep = mode | INTC_MODE_IS_PRIO;
- *datap = &pr->value;
- *enums = pr->enum_ids;
- *first = (pr->reg_width / pr->field_width) - 1;
- *width = pr->field_width;
- return;
- }
- }
-
- abort();
-}
-
-static void sh_intc_toggle_mask(struct intc_desc *desc, intc_enum id,
- int enable, int is_group)
-{
- struct intc_source *source = desc->sources + id;
-
- if (!id)
- return;
-
- if (!source->next_enum_id && (!source->enable_max || !source->vect)) {
-#ifdef DEBUG_INTC_SOURCES
- printf("sh_intc: reserved interrupt source %d modified\n", id);
-#endif
- return;
- }
-
- if (source->vect)
- sh_intc_toggle_source(source, enable ? 1 : -1, 0);
-
-#ifdef DEBUG_INTC
- else {
- printf("setting interrupt group %d to %d\n", id, !!enable);
- }
-#endif
-
- if ((is_group || !source->vect) && source->next_enum_id) {
- sh_intc_toggle_mask(desc, source->next_enum_id, enable, 1);
- }
-
-#ifdef DEBUG_INTC
- if (!source->vect) {
- printf("setting interrupt group %d to %d - done\n", id, !!enable);
- }
-#endif
-}
-
-static uint64_t sh_intc_read(void *opaque, hwaddr offset,
- unsigned size)
-{
- struct intc_desc *desc = opaque;
- intc_enum *enum_ids = NULL;
- unsigned int first = 0;
- unsigned int width = 0;
- unsigned int mode = 0;
- unsigned long *valuep;
-
-#ifdef DEBUG_INTC
- printf("sh_intc_read 0x%lx\n", (unsigned long) offset);
-#endif
-
- sh_intc_locate(desc, (unsigned long)offset, &valuep,
- &enum_ids, &first, &width, &mode);
- return *valuep;
-}
-
-static void sh_intc_write(void *opaque, hwaddr offset,
- uint64_t value, unsigned size)
-{
- struct intc_desc *desc = opaque;
- intc_enum *enum_ids = NULL;
- unsigned int first = 0;
- unsigned int width = 0;
- unsigned int mode = 0;
- unsigned int k;
- unsigned long *valuep;
- unsigned long mask;
-
-#ifdef DEBUG_INTC
- printf("sh_intc_write 0x%lx 0x%08x\n", (unsigned long) offset, value);
-#endif
-
- sh_intc_locate(desc, (unsigned long)offset, &valuep,
- &enum_ids, &first, &width, &mode);
-
- switch (mode) {
- case INTC_MODE_ENABLE_REG | INTC_MODE_IS_PRIO: break;
- case INTC_MODE_DUAL_SET: value |= *valuep; break;
- case INTC_MODE_DUAL_CLR: value = *valuep & ~value; break;
- default: abort();
- }
-
- for (k = 0; k <= first; k++) {
- mask = ((1 << width) - 1) << ((first - k) * width);
-
- if ((*valuep & mask) == (value & mask))
- continue;
-#if 0
- printf("k = %d, first = %d, enum = %d, mask = 0x%08x\n",
- k, first, enum_ids[k], (unsigned int)mask);
-#endif
- sh_intc_toggle_mask(desc, enum_ids[k], value & mask, 0);
- }
-
- *valuep = value;
-
-#ifdef DEBUG_INTC
- printf("sh_intc_write 0x%lx -> 0x%08x\n", (unsigned long) offset, value);
-#endif
-}
-
-static const MemoryRegionOps sh_intc_ops = {
- .read = sh_intc_read,
- .write = sh_intc_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-struct intc_source *sh_intc_source(struct intc_desc *desc, intc_enum id)
-{
- if (id)
- return desc->sources + id;
-
- return NULL;
-}
-
-static unsigned int sh_intc_register(MemoryRegion *sysmem,
- struct intc_desc *desc,
- const unsigned long address,
- const char *type,
- const char *action,
- const unsigned int index)
-{
- char name[60];
- MemoryRegion *iomem, *iomem_p4, *iomem_a7;
-
- if (!address) {
- return 0;
- }
-
- iomem = &desc->iomem;
- iomem_p4 = desc->iomem_aliases + index;
- iomem_a7 = iomem_p4 + 1;
-
-#define SH_INTC_IOMEM_FORMAT "interrupt-controller-%s-%s-%s"
- snprintf(name, sizeof(name), SH_INTC_IOMEM_FORMAT, type, action, "p4");
- memory_region_init_alias(iomem_p4, NULL, name, iomem, INTC_A7(address), 4);
- memory_region_add_subregion(sysmem, P4ADDR(address), iomem_p4);
-
- snprintf(name, sizeof(name), SH_INTC_IOMEM_FORMAT, type, action, "a7");
- memory_region_init_alias(iomem_a7, NULL, name, iomem, INTC_A7(address), 4);
- memory_region_add_subregion(sysmem, A7ADDR(address), iomem_a7);
-#undef SH_INTC_IOMEM_FORMAT
-
- /* used to increment aliases index */
- return 2;
-}
-
-static void sh_intc_register_source(struct intc_desc *desc,
- intc_enum source,
- struct intc_group *groups,
- int nr_groups)
-{
- unsigned int i, k;
- struct intc_source *s;
-
- if (desc->mask_regs) {
- for (i = 0; i < desc->nr_mask_regs; i++) {
- struct intc_mask_reg *mr = desc->mask_regs + i;
-
- for (k = 0; k < ARRAY_SIZE(mr->enum_ids); k++) {
- if (mr->enum_ids[k] != source)
- continue;
-
- s = sh_intc_source(desc, mr->enum_ids[k]);
- if (s)
- s->enable_max++;
- }
- }
- }
-
- if (desc->prio_regs) {
- for (i = 0; i < desc->nr_prio_regs; i++) {
- struct intc_prio_reg *pr = desc->prio_regs + i;
-
- for (k = 0; k < ARRAY_SIZE(pr->enum_ids); k++) {
- if (pr->enum_ids[k] != source)
- continue;
-
- s = sh_intc_source(desc, pr->enum_ids[k]);
- if (s)
- s->enable_max++;
- }
- }
- }
-
- if (groups) {
- for (i = 0; i < nr_groups; i++) {
- struct intc_group *gr = groups + i;
-
- for (k = 0; k < ARRAY_SIZE(gr->enum_ids); k++) {
- if (gr->enum_ids[k] != source)
- continue;
-
- s = sh_intc_source(desc, gr->enum_ids[k]);
- if (s)
- s->enable_max++;
- }
- }
- }
-
-}
-
-void sh_intc_register_sources(struct intc_desc *desc,
- struct intc_vect *vectors,
- int nr_vectors,
- struct intc_group *groups,
- int nr_groups)
-{
- unsigned int i, k;
- struct intc_source *s;
-
- for (i = 0; i < nr_vectors; i++) {
- struct intc_vect *vect = vectors + i;
-
- sh_intc_register_source(desc, vect->enum_id, groups, nr_groups);
- s = sh_intc_source(desc, vect->enum_id);
- if (s) {
- s->vect = vect->vect;
-
-#ifdef DEBUG_INTC_SOURCES
- printf("sh_intc: registered source %d -> 0x%04x (%d/%d)\n",
- vect->enum_id, s->vect, s->enable_count, s->enable_max);
-#endif
- }
- }
-
- if (groups) {
- for (i = 0; i < nr_groups; i++) {
- struct intc_group *gr = groups + i;
-
- s = sh_intc_source(desc, gr->enum_id);
- s->next_enum_id = gr->enum_ids[0];
-
- for (k = 1; k < ARRAY_SIZE(gr->enum_ids); k++) {
- if (!gr->enum_ids[k])
- continue;
-
- s = sh_intc_source(desc, gr->enum_ids[k - 1]);
- s->next_enum_id = gr->enum_ids[k];
- }
-
-#ifdef DEBUG_INTC_SOURCES
- printf("sh_intc: registered group %d (%d/%d)\n",
- gr->enum_id, s->enable_count, s->enable_max);
-#endif
- }
- }
-}
-
-int sh_intc_init(MemoryRegion *sysmem,
- struct intc_desc *desc,
- int nr_sources,
- struct intc_mask_reg *mask_regs,
- int nr_mask_regs,
- struct intc_prio_reg *prio_regs,
- int nr_prio_regs)
-{
- unsigned int i, j;
-
- desc->pending = 0;
- desc->nr_sources = nr_sources;
- desc->mask_regs = mask_regs;
- desc->nr_mask_regs = nr_mask_regs;
- desc->prio_regs = prio_regs;
- desc->nr_prio_regs = nr_prio_regs;
- /* Allocate 4 MemoryRegions per register (2 actions * 2 aliases).
- **/
- desc->iomem_aliases = g_new0(MemoryRegion,
- (nr_mask_regs + nr_prio_regs) * 4);
-
- j = 0;
- i = sizeof(struct intc_source) * nr_sources;
- desc->sources = g_malloc0(i);
-
- for (i = 0; i < desc->nr_sources; i++) {
- struct intc_source *source = desc->sources + i;
-
- source->parent = desc;
- }
-
- desc->irqs = qemu_allocate_irqs(sh_intc_set_irq, desc, nr_sources);
-
- memory_region_init_io(&desc->iomem, NULL, &sh_intc_ops, desc,
- "interrupt-controller", 0x100000000ULL);
-
-#define INT_REG_PARAMS(reg_struct, type, action, j) \
- reg_struct->action##_reg, #type, #action, j
- if (desc->mask_regs) {
- for (i = 0; i < desc->nr_mask_regs; i++) {
- struct intc_mask_reg *mr = desc->mask_regs + i;
-
- j += sh_intc_register(sysmem, desc,
- INT_REG_PARAMS(mr, mask, set, j));
- j += sh_intc_register(sysmem, desc,
- INT_REG_PARAMS(mr, mask, clr, j));
- }
- }
-
- if (desc->prio_regs) {
- for (i = 0; i < desc->nr_prio_regs; i++) {
- struct intc_prio_reg *pr = desc->prio_regs + i;
-
- j += sh_intc_register(sysmem, desc,
- INT_REG_PARAMS(pr, prio, set, j));
- j += sh_intc_register(sysmem, desc,
- INT_REG_PARAMS(pr, prio, clr, j));
- }
- }
-#undef INT_REG_PARAMS
-
- return 0;
-}
-
-/* Assert level <n> IRL interrupt.
- 0:deassert. 1:lowest priority,... 15:highest priority. */
-void sh_intc_set_irl(void *opaque, int n, int level)
-{
- struct intc_source *s = opaque;
- int i, irl = level ^ 15;
- for (i = 0; (s = sh_intc_source(s->parent, s->next_enum_id)); i++) {
- if (i == irl)
- sh_intc_toggle_source(s, s->enable_count?0:1, s->asserted?0:1);
- else
- if (s->asserted)
- sh_intc_toggle_source(s, 0, -1);
- }
-}