hw: move interrupt controllers to hw/intc/, configure with default-configs/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 385 insertions, 0 deletions

diff --git a/hw/intc/grlib_irqmp.c b/hw/intc/grlib_irqmp.c
new file mode 100644
index 0000000000..68dfe6a4bb
--- /dev/null
+++ b/hw/intc/grlib_irqmp.c
@@ -0,0 +1,385 @@
+/*
+ * QEMU GRLIB IRQMP Emulator
+ *
+ * (Multiprocessor and extended interrupt not supported)
+ *
+ * Copyright (c) 2010-2011 AdaCore
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw/sysbus.h"
+#include "cpu.h"
+
+#include "hw/sparc/grlib.h"
+
+#include "trace.h"
+
+#define IRQMP_MAX_CPU 16
+#define IRQMP_REG_SIZE 256      /* Size of memory mapped registers */
+
+/* Memory mapped register offsets */
+#define LEVEL_OFFSET     0x00
+#define PENDING_OFFSET   0x04
+#define FORCE0_OFFSET    0x08
+#define CLEAR_OFFSET     0x0C
+#define MP_STATUS_OFFSET 0x10
+#define BROADCAST_OFFSET 0x14
+#define MASK_OFFSET      0x40
+#define FORCE_OFFSET     0x80
+#define EXTENDED_OFFSET  0xC0
+
+typedef struct IRQMPState IRQMPState;
+
+typedef struct IRQMP {
+    SysBusDevice busdev;
+    MemoryRegion iomem;
+
+    void *set_pil_in;
+    void *set_pil_in_opaque;
+
+    IRQMPState *state;
+} IRQMP;
+
+struct IRQMPState {
+    uint32_t level;
+    uint32_t pending;
+    uint32_t clear;
+    uint32_t broadcast;
+
+    uint32_t mask[IRQMP_MAX_CPU];
+    uint32_t force[IRQMP_MAX_CPU];
+    uint32_t extended[IRQMP_MAX_CPU];
+
+    IRQMP    *parent;
+};
+
+static void grlib_irqmp_check_irqs(IRQMPState *state)
+{
+    uint32_t      pend   = 0;
+    uint32_t      level0 = 0;
+    uint32_t      level1 = 0;
+    set_pil_in_fn set_pil_in;
+
+    assert(state != NULL);
+    assert(state->parent != NULL);
+
+    /* IRQ for CPU 0 (no SMP support) */
+    pend = (state->pending | state->force[0])
+        & state->mask[0];
+
+    level0 = pend & ~state->level;
+    level1 = pend &  state->level;
+
+    trace_grlib_irqmp_check_irqs(state->pending, state->force[0],
+                                 state->mask[0], level1, level0);
+
+    set_pil_in = (set_pil_in_fn)state->parent->set_pil_in;
+
+    /* Trigger level1 interrupt first and level0 if there is no level1 */
+    if (level1 != 0) {
+        set_pil_in(state->parent->set_pil_in_opaque, level1);
+    } else {
+        set_pil_in(state->parent->set_pil_in_opaque, level0);
+    }
+}
+
+void grlib_irqmp_ack(DeviceState *dev, int intno)
+{
+    SysBusDevice *sdev;
+    IRQMP        *irqmp;
+    IRQMPState   *state;
+    uint32_t      mask;
+
+    assert(dev != NULL);
+
+    sdev = SYS_BUS_DEVICE(dev);
+    assert(sdev != NULL);
+
+    irqmp = FROM_SYSBUS(typeof(*irqmp), sdev);
+    assert(irqmp != NULL);
+
+    state = irqmp->state;
+    assert(state != NULL);
+
+    intno &= 15;
+    mask = 1 << intno;
+
+    trace_grlib_irqmp_ack(intno);
+
+    /* Clear registers */
+    state->pending  &= ~mask;
+    state->force[0] &= ~mask; /* Only CPU 0 (No SMP support) */
+
+    grlib_irqmp_check_irqs(state);
+}
+
+void grlib_irqmp_set_irq(void *opaque, int irq, int level)
+{
+    IRQMP      *irqmp;
+    IRQMPState *s;
+    int         i = 0;
+
+    assert(opaque != NULL);
+
+    irqmp = FROM_SYSBUS(typeof(*irqmp), SYS_BUS_DEVICE(opaque));
+    assert(irqmp != NULL);
+
+    s = irqmp->state;
+    assert(s         != NULL);
+    assert(s->parent != NULL);
+
+
+    if (level) {
+        trace_grlib_irqmp_set_irq(irq);
+
+        if (s->broadcast & 1 << irq) {
+            /* Broadcasted IRQ */
+            for (i = 0; i < IRQMP_MAX_CPU; i++) {
+                s->force[i] |= 1 << irq;
+            }
+        } else {
+            s->pending |= 1 << irq;
+        }
+        grlib_irqmp_check_irqs(s);
+
+    }
+}
+
+static uint64_t grlib_irqmp_read(void *opaque, hwaddr addr,
+                                 unsigned size)
+{
+    IRQMP      *irqmp = opaque;
+    IRQMPState *state;
+
+    assert(irqmp != NULL);
+    state = irqmp->state;
+    assert(state != NULL);
+
+    addr &= 0xff;
+
+    /* global registers */
+    switch (addr) {
+    case LEVEL_OFFSET:
+        return state->level;
+
+    case PENDING_OFFSET:
+        return state->pending;
+
+    case FORCE0_OFFSET:
+        /* This register is an "alias" for the force register of CPU 0 */
+        return state->force[0];
+
+    case CLEAR_OFFSET:
+    case MP_STATUS_OFFSET:
+        /* Always read as 0 */
+        return 0;
+
+    case BROADCAST_OFFSET:
+        return state->broadcast;
+
+    default:
+        break;
+    }
+
+    /* mask registers */
+    if (addr >= MASK_OFFSET && addr < FORCE_OFFSET) {
+        int cpu = (addr - MASK_OFFSET) / 4;
+        assert(cpu >= 0 && cpu < IRQMP_MAX_CPU);
+
+        return state->mask[cpu];
+    }
+
+    /* force registers */
+    if (addr >= FORCE_OFFSET && addr < EXTENDED_OFFSET) {
+        int cpu = (addr - FORCE_OFFSET) / 4;
+        assert(cpu >= 0 && cpu < IRQMP_MAX_CPU);
+
+        return state->force[cpu];
+    }
+
+    /* extended (not supported) */
+    if (addr >= EXTENDED_OFFSET && addr < IRQMP_REG_SIZE) {
+        int cpu = (addr - EXTENDED_OFFSET) / 4;
+        assert(cpu >= 0 && cpu < IRQMP_MAX_CPU);
+
+        return state->extended[cpu];
+    }
+
+    trace_grlib_irqmp_readl_unknown(addr);
+    return 0;
+}
+
+static void grlib_irqmp_write(void *opaque, hwaddr addr,
+                              uint64_t value, unsigned size)
+{
+    IRQMP      *irqmp = opaque;
+    IRQMPState *state;
+
+    assert(irqmp != NULL);
+    state = irqmp->state;
+    assert(state != NULL);
+
+    addr &= 0xff;
+
+    /* global registers */
+    switch (addr) {
+    case LEVEL_OFFSET:
+        value &= 0xFFFF << 1; /* clean up the value */
+        state->level = value;
+        return;
+
+    case PENDING_OFFSET:
+        /* Read Only */
+        return;
+
+    case FORCE0_OFFSET:
+        /* This register is an "alias" for the force register of CPU 0 */
+
+        value &= 0xFFFE; /* clean up the value */
+        state->force[0] = value;
+        grlib_irqmp_check_irqs(irqmp->state);
+        return;
+
+    case CLEAR_OFFSET:
+        value &= ~1; /* clean up the value */
+        state->pending &= ~value;
+        return;
+
+    case MP_STATUS_OFFSET:
+        /* Read Only (no SMP support) */
+        return;
+
+    case BROADCAST_OFFSET:
+        value &= 0xFFFE; /* clean up the value */
+        state->broadcast = value;
+        return;
+
+    default:
+        break;
+    }
+
+    /* mask registers */
+    if (addr >= MASK_OFFSET && addr < FORCE_OFFSET) {
+        int cpu = (addr - MASK_OFFSET) / 4;
+        assert(cpu >= 0 && cpu < IRQMP_MAX_CPU);
+
+        value &= ~1; /* clean up the value */
+        state->mask[cpu] = value;
+        grlib_irqmp_check_irqs(irqmp->state);
+        return;
+    }
+
+    /* force registers */
+    if (addr >= FORCE_OFFSET && addr < EXTENDED_OFFSET) {
+        int cpu = (addr - FORCE_OFFSET) / 4;
+        assert(cpu >= 0 && cpu < IRQMP_MAX_CPU);
+
+        uint32_t force = value & 0xFFFE;
+        uint32_t clear = (value >> 16) & 0xFFFE;
+        uint32_t old   = state->force[cpu];
+
+        state->force[cpu] = (old | force) & ~clear;
+        grlib_irqmp_check_irqs(irqmp->state);
+        return;
+    }
+
+    /* extended (not supported) */
+    if (addr >= EXTENDED_OFFSET && addr < IRQMP_REG_SIZE) {
+        int cpu = (addr - EXTENDED_OFFSET) / 4;
+        assert(cpu >= 0 && cpu < IRQMP_MAX_CPU);
+
+        value &= 0xF; /* clean up the value */
+        state->extended[cpu] = value;
+        return;
+    }
+
+    trace_grlib_irqmp_writel_unknown(addr, value);
+}
+
+static const MemoryRegionOps grlib_irqmp_ops = {
+    .read = grlib_irqmp_read,
+    .write = grlib_irqmp_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
+};
+
+static void grlib_irqmp_reset(DeviceState *d)
+{
+    IRQMP *irqmp = container_of(d, IRQMP, busdev.qdev);
+    assert(irqmp        != NULL);
+    assert(irqmp->state != NULL);
+
+    memset(irqmp->state, 0, sizeof *irqmp->state);
+    irqmp->state->parent = irqmp;
+}
+
+static int grlib_irqmp_init(SysBusDevice *dev)
+{
+    IRQMP *irqmp = FROM_SYSBUS(typeof(*irqmp), dev);
+
+    assert(irqmp != NULL);
+
+    /* Check parameters */
+    if (irqmp->set_pil_in == NULL) {
+        return -1;
+    }
+
+    memory_region_init_io(&irqmp->iomem, &grlib_irqmp_ops, irqmp,
+                          "irqmp", IRQMP_REG_SIZE);
+
+    irqmp->state = g_malloc0(sizeof *irqmp->state);
+
+    sysbus_init_mmio(dev, &irqmp->iomem);
+
+    return 0;
+}
+
+static Property grlib_irqmp_properties[] = {
+    DEFINE_PROP_PTR("set_pil_in", IRQMP, set_pil_in),
+    DEFINE_PROP_PTR("set_pil_in_opaque", IRQMP, set_pil_in_opaque),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void grlib_irqmp_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+    k->init = grlib_irqmp_init;
+    dc->reset = grlib_irqmp_reset;
+    dc->props = grlib_irqmp_properties;
+}
+
+static const TypeInfo grlib_irqmp_info = {
+    .name          = "grlib,irqmp",
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(IRQMP),
+    .class_init    = grlib_irqmp_class_init,
+};
+
+static void grlib_irqmp_register_types(void)
+{
+    type_register_static(&grlib_irqmp_info);
+}
+
+type_init(grlib_irqmp_register_types)