hw: move boards and other isolated files to hw/ARCH

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

1 files changed, 164 insertions, 0 deletions

diff --git a/hw/xtensa/pic_cpu.c b/hw/xtensa/pic_cpu.c
new file mode 100644
index 0000000000..f485a1465c
--- /dev/null
+++ b/hw/xtensa/pic_cpu.c
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "hw/hw.h"
+#include "qemu/log.h"
+#include "qemu/timer.h"
+
+void xtensa_advance_ccount(CPUXtensaState *env, uint32_t d)
+{
+    uint32_t old_ccount = env->sregs[CCOUNT];
+
+    env->sregs[CCOUNT] += d;
+
+    if (xtensa_option_enabled(env->config, XTENSA_OPTION_TIMER_INTERRUPT)) {
+        int i;
+        for (i = 0; i < env->config->nccompare; ++i) {
+            if (env->sregs[CCOMPARE + i] - old_ccount <= d) {
+                xtensa_timer_irq(env, i, 1);
+            }
+        }
+    }
+}
+
+void check_interrupts(CPUXtensaState *env)
+{
+    int minlevel = xtensa_get_cintlevel(env);
+    uint32_t int_set_enabled = env->sregs[INTSET] & env->sregs[INTENABLE];
+    int level;
+
+    /* If the CPU is halted advance CCOUNT according to the vm_clock time
+     * elapsed since the moment when it was advanced last time.
+     */
+    if (env->halted) {
+        int64_t now = qemu_get_clock_ns(vm_clock);
+
+        xtensa_advance_ccount(env,
+                muldiv64(now - env->halt_clock,
+                    env->config->clock_freq_khz, 1000000));
+        env->halt_clock = now;
+    }
+    for (level = env->config->nlevel; level > minlevel; --level) {
+        if (env->config->level_mask[level] & int_set_enabled) {
+            env->pending_irq_level = level;
+            cpu_interrupt(env, CPU_INTERRUPT_HARD);
+            qemu_log_mask(CPU_LOG_INT,
+                    "%s level = %d, cintlevel = %d, "
+                    "pc = %08x, a0 = %08x, ps = %08x, "
+                    "intset = %08x, intenable = %08x, "
+                    "ccount = %08x\n",
+                    __func__, level, xtensa_get_cintlevel(env),
+                    env->pc, env->regs[0], env->sregs[PS],
+                    env->sregs[INTSET], env->sregs[INTENABLE],
+                    env->sregs[CCOUNT]);
+            return;
+        }
+    }
+    env->pending_irq_level = 0;
+    cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
+}
+
+static void xtensa_set_irq(void *opaque, int irq, int active)
+{
+    CPUXtensaState *env = opaque;
+
+    if (irq >= env->config->ninterrupt) {
+        qemu_log("%s: bad IRQ %d\n", __func__, irq);
+    } else {
+        uint32_t irq_bit = 1 << irq;
+
+        if (active) {
+            env->sregs[INTSET] |= irq_bit;
+        } else if (env->config->interrupt[irq].inttype == INTTYPE_LEVEL) {
+            env->sregs[INTSET] &= ~irq_bit;
+        }
+
+        check_interrupts(env);
+    }
+}
+
+void xtensa_timer_irq(CPUXtensaState *env, uint32_t id, uint32_t active)
+{
+    qemu_set_irq(env->irq_inputs[env->config->timerint[id]], active);
+}
+
+void xtensa_rearm_ccompare_timer(CPUXtensaState *env)
+{
+    int i;
+    uint32_t wake_ccount = env->sregs[CCOUNT] - 1;
+
+    for (i = 0; i < env->config->nccompare; ++i) {
+        if (env->sregs[CCOMPARE + i] - env->sregs[CCOUNT] <
+                wake_ccount - env->sregs[CCOUNT]) {
+            wake_ccount = env->sregs[CCOMPARE + i];
+        }
+    }
+    env->wake_ccount = wake_ccount;
+    qemu_mod_timer(env->ccompare_timer, env->halt_clock +
+            muldiv64(wake_ccount - env->sregs[CCOUNT],
+                1000000, env->config->clock_freq_khz));
+}
+
+static void xtensa_ccompare_cb(void *opaque)
+{
+    XtensaCPU *cpu = opaque;
+    CPUXtensaState *env = &cpu->env;
+
+    if (env->halted) {
+        env->halt_clock = qemu_get_clock_ns(vm_clock);
+        xtensa_advance_ccount(env, env->wake_ccount - env->sregs[CCOUNT]);
+        if (!cpu_has_work(CPU(cpu))) {
+            env->sregs[CCOUNT] = env->wake_ccount + 1;
+            xtensa_rearm_ccompare_timer(env);
+        }
+    }
+}
+
+void xtensa_irq_init(CPUXtensaState *env)
+{
+    XtensaCPU *cpu = xtensa_env_get_cpu(env);
+
+    env->irq_inputs = (void **)qemu_allocate_irqs(
+            xtensa_set_irq, env, env->config->ninterrupt);
+    if (xtensa_option_enabled(env->config, XTENSA_OPTION_TIMER_INTERRUPT) &&
+            env->config->nccompare > 0) {
+        env->ccompare_timer =
+            qemu_new_timer_ns(vm_clock, &xtensa_ccompare_cb, cpu);
+    }
+}
+
+void *xtensa_get_extint(CPUXtensaState *env, unsigned extint)
+{
+    if (extint < env->config->nextint) {
+        unsigned irq = env->config->extint[extint];
+        return env->irq_inputs[irq];
+    } else {
+        qemu_log("%s: trying to acquire invalid external interrupt %d\n",
+                __func__, extint);
+        return NULL;
+    }
+}