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authorPaolo Bonzini <pbonzini@redhat.com>2013-02-05 12:03:15 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2013-03-01 15:01:19 +0100
commit530182169e897c0e401b245552a4c58dc6846912 (patch)
tree8c39251d7e89855a89d925359f71639400782cd6 /hw/mips_timer.c
parente4c8b28cde12d01ada8fe869567dc5717a2dfcb7 (diff)
hw: move boards and other isolated files to hw/ARCH
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/mips_timer.c')
-rw-r--r--hw/mips_timer.c147
1 files changed, 0 insertions, 147 deletions
diff --git a/hw/mips_timer.c b/hw/mips_timer.c
deleted file mode 100644
index 9ad13f3924..0000000000
--- a/hw/mips_timer.c
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- * QEMU MIPS timer support
- *
- * 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/hw.h"
-#include "hw/mips_cpudevs.h"
-#include "qemu/timer.h"
-
-#define TIMER_FREQ 100 * 1000 * 1000
-
-/* XXX: do not use a global */
-uint32_t cpu_mips_get_random (CPUMIPSState *env)
-{
- static uint32_t lfsr = 1;
- static uint32_t prev_idx = 0;
- uint32_t idx;
- /* Don't return same value twice, so get another value */
- do {
- lfsr = (lfsr >> 1) ^ (-(lfsr & 1u) & 0xd0000001u);
- idx = lfsr % (env->tlb->nb_tlb - env->CP0_Wired) + env->CP0_Wired;
- } while (idx == prev_idx);
- prev_idx = idx;
- return idx;
-}
-
-/* MIPS R4K timer */
-static void cpu_mips_timer_update(CPUMIPSState *env)
-{
- uint64_t now, next;
- uint32_t wait;
-
- now = qemu_get_clock_ns(vm_clock);
- wait = env->CP0_Compare - env->CP0_Count -
- (uint32_t)muldiv64(now, TIMER_FREQ, get_ticks_per_sec());
- next = now + muldiv64(wait, get_ticks_per_sec(), TIMER_FREQ);
- qemu_mod_timer(env->timer, next);
-}
-
-/* Expire the timer. */
-static void cpu_mips_timer_expire(CPUMIPSState *env)
-{
- cpu_mips_timer_update(env);
- if (env->insn_flags & ISA_MIPS32R2) {
- env->CP0_Cause |= 1 << CP0Ca_TI;
- }
- qemu_irq_raise(env->irq[(env->CP0_IntCtl >> CP0IntCtl_IPTI) & 0x7]);
-}
-
-uint32_t cpu_mips_get_count (CPUMIPSState *env)
-{
- if (env->CP0_Cause & (1 << CP0Ca_DC)) {
- return env->CP0_Count;
- } else {
- uint64_t now;
-
- now = qemu_get_clock_ns(vm_clock);
- if (qemu_timer_pending(env->timer)
- && qemu_timer_expired(env->timer, now)) {
- /* The timer has already expired. */
- cpu_mips_timer_expire(env);
- }
-
- return env->CP0_Count +
- (uint32_t)muldiv64(now, TIMER_FREQ, get_ticks_per_sec());
- }
-}
-
-void cpu_mips_store_count (CPUMIPSState *env, uint32_t count)
-{
- if (env->CP0_Cause & (1 << CP0Ca_DC))
- env->CP0_Count = count;
- else {
- /* Store new count register */
- env->CP0_Count =
- count - (uint32_t)muldiv64(qemu_get_clock_ns(vm_clock),
- TIMER_FREQ, get_ticks_per_sec());
- /* Update timer timer */
- cpu_mips_timer_update(env);
- }
-}
-
-void cpu_mips_store_compare (CPUMIPSState *env, uint32_t value)
-{
- env->CP0_Compare = value;
- if (!(env->CP0_Cause & (1 << CP0Ca_DC)))
- cpu_mips_timer_update(env);
- if (env->insn_flags & ISA_MIPS32R2)
- env->CP0_Cause &= ~(1 << CP0Ca_TI);
- qemu_irq_lower(env->irq[(env->CP0_IntCtl >> CP0IntCtl_IPTI) & 0x7]);
-}
-
-void cpu_mips_start_count(CPUMIPSState *env)
-{
- cpu_mips_store_count(env, env->CP0_Count);
-}
-
-void cpu_mips_stop_count(CPUMIPSState *env)
-{
- /* Store the current value */
- env->CP0_Count += (uint32_t)muldiv64(qemu_get_clock_ns(vm_clock),
- TIMER_FREQ, get_ticks_per_sec());
-}
-
-static void mips_timer_cb (void *opaque)
-{
- CPUMIPSState *env;
-
- env = opaque;
-#if 0
- qemu_log("%s\n", __func__);
-#endif
-
- if (env->CP0_Cause & (1 << CP0Ca_DC))
- return;
-
- /* ??? This callback should occur when the counter is exactly equal to
- the comparator value. Offset the count by one to avoid immediately
- retriggering the callback before any virtual time has passed. */
- env->CP0_Count++;
- cpu_mips_timer_expire(env);
- env->CP0_Count--;
-}
-
-void cpu_mips_clock_init (CPUMIPSState *env)
-{
- env->timer = qemu_new_timer_ns(vm_clock, &mips_timer_cb, env);
- env->CP0_Compare = 0;
- cpu_mips_store_count(env, 1);
-}